Some standard content:
J72 | | tt | | JB | ||Ministry of Machinery Industry of the People's Republic of China
Released
Implemented on 1994-07-01
Machinery Industry Standard of the People's Republic of China
Diaphragm Pressure
1 Topic Content and scope of application
Machine
Contraction
JB/T 6905-93
This standard specifies hydraulically driven metal diaphragm diaphragm compressors (hereinafter referred to as diaphragm compressors) (machine) basic parameters, technical requirements, test methods, inspection rules and marking, packaging and storage requirements. This standard applies to membrane presses with rated exhaust pressure not higher than 25MPa. Pressurized membrane presses with rated exhaust pressure below 100MPa can also be used as a reference.
2 Reference standards
GB3853
GB4980
GB7022
GB7777
GB7786
GB/T 13306||tt ||GB/T13384
JB2589
JB/T6431
JB/T6908
Performance test method for general positive displacement air compressor Noise and sound power level of positive displacement compressor Determination of noise and sound power level of positive displacement compressor - Engineering method Determination of noise and sound power level of positive displacement compressor - Simple method Measurement and evaluation of core vibration of reciprocating piston compressor Noise and sound power level limit label of power air compressor and diaphragm compressor
Electromechanical General technical requirements for product packaging
Positive compressor model compilation method
Technical conditions for gray iron transfer parts of positive displacement compressors Technical conditions for forgings of positive displacement compressors
ZB/TJ01035.5 .Integrity of product drawings and design documents 3
Type and basic parameters
3.1
3. 2
The model of the film press should comply with the regulations of JB2589, and the film pressure The specified working conditions of the machine are;
Air:
a.
b.
c.
d.
e.| |tt||f.
g.
h.
Compression medium
Heating pressure
Suction temperature
0.1MPa( absolute);
20℃;
Suction relative humidity 0:
Cooling water inlet temperature
15℃:
The speed is the rated speed| |tt||x/min;
The exhaust pressure is the rated exhaust pressure
TMPa:
The cooling water flow rate is specified in Table 1.
Approved by the Ministry of Machinery Industry on 1993-07-13
Implemented on 1994-07-01
1
MPa
Rated exhaust pressure||tt| |1.6
2.5
4.0
(20)
25
Note, non-preferred values ??are in brackets,
3.3|| tt||JB/T 6905-93
Table 1
The type and basic parameters of the membrane press are as specified in Table 2. Table 2
Drive motor
Compression stages
level
two
level
rated power
kw|| tt||D.55
1.5
4
7.5
15
22
0.75
2. 2
3
4
5.5
7.5
11
15
30
45|| tt||Note: Non-optimal values ??are in parentheses.
Technical requirements
4. 1
4. 2
4.3
4.4
4.5
4.6||tt ||4.7
1. 6
0.8
4
8
16
30
45||tt ||2.5
10
20
Cooling water flow L/m
40
≤42
≤45||tt| |70
≤80
rated exhaust pressure
MPa
4.0
16
m'/h
Nominal volume flow
5
10
40
60
The membrane press should comply with the provisions of this standard and follow the drawings approved by the prescribed procedures. and technical documentation, the actual volumetric flow rate of the membrane press should not be lower than the nominal volumetric flow rate. The specific power of the film press under specified working conditions should not be greater than the requirements in Table 3. The noise power level of the membrane press should comply with the regulations of GB7786. The cleanliness of the film press should not be greater than the requirements in Table 4. The vibration intensity of the film press should comply with the regulations of GB7777. (20)
20
25
0.8
8
16
30
45
When compressing air, under the conditions that the primary suction temperature is 40°C, the cooling water inlet temperature is 30°C, and the exhaust pressure is equal to the nominal exhaust pressure, the exhaust temperature of each stage of the film press should not exceed 160°C. , the lubricating oil temperature in the crankcase should not exceed 70°C. 2
4.8
4.9
6959
When pressing flammable, toxic and corrosive gases, the membrane press and its supporting equipment should be The corresponding safety protection measures for membrane presses and pressure vessels should comply with the "Pressure Sleeve Safety Technical Supervision Regulations." Table 3
level
single
two
number
Note, non-preferred values ??are in brackets,
nominal volumetric flow rate|| tt||m\/h
Cleanliness m
nominal exhaust pressure
MPs
1.6
2.5
4.0|| tt||16
(20)
25
<10
700
Table 4
Nominal volumetric flow rate||tt| |/h
0.8
8
16
30
45
10
20
5
1
1e
40
60
5
20
o.8
4
8
16
30
45
10~20
800
Specific power||tt| |kw/(m*.h-1)
0. 41
0.28
0. 25
0.23
0.21
0.28
0.32
0.58
0. 44
0. 39
0. 44
0.43
0.72| |tt||0. 51
0.46
0.44
0.41
>20
900
4.10 Pressure parts of membrane press And pipes and pipeline accessories should be hydrostatically tested. The test pressure is equal to 1.5 times the maximum working pressure of each component. There should be no leakage after maintaining the pressure for 30 minutes under the test pressure. The cooling water circuit should be hydrostatically tested at a pressure of 0.6MPa, and the pressure should be maintained for 30 minutes without leakage. 4.11
4. 12
4.13
4. 14
4. 15
The air, water and oil paths of the membrane press should be sealed , should not clean each other and avoid each other. The crankcase oil filter should be tested and maintained to hold kerosene, and there should be no leakage. After the suction and exhaust components are assembled, a tooth sealing test should be performed. After injecting coal into the kerosene, There should be no full leakage within 1 minute. The gray iron transfer parts of the film press comply with the regulations of JB/T6431: the forgings should comply with the current regulations of JB/T6908, and the crankshaft, connecting rod pin, crosshead pin, piston pin, piston and plunger should not have cracks, burrs and inclusions.The surface of the reservoir should not have concave 3
decay and bruises.
JB/T6905—93
4.16 The membrane cavity curved surface and its sealing surface should not have sand holes, looseness, air holes, burrs, sharp edges, scratches, scuffs, pressure pits, protrusions and defects that affect air tightness.
4.17 The surface roughness of the rolled surface of the diaphragm is R0.4, and there should be no scratches, abrasions, folds, rust, spots and burrs. 4.18 The sealing surface, piston ring groove end face, piston and crosshead outer cylindrical surface, cylinder sleeve mirror of the cylinder body should not have defects such as sand, sparseness, sealing, scratches and burrs.
4.19 The replacement period of the membrane press diaphragm and valve assembly is not less than 2000bh. 4.20 The manufacturer should be able to provide the automatic control and protection devices required for the membrane press. 4.21 The outer surface of the membrane press should be painted and smooth, the fasteners should be treated with rust prevention, the operating parts should be treated with decorative treatment, and the spokes of the rotating parts (such as flywheels, etc.) exposed to the outside without protection should be painted with red rust prevention paint. 4.22 The unprocessed inner surface of the membrane press should be painted with rust prevention. 4.23
4. 24
a.
b.
c.
d.
e.
f.
g.
h.
The rotation direction of the membrane press should be clearly marked. The complete set supply scope of membrane press includes:
membrane press,
motor:
transmission device:
control instrument and its accessories;
special tools:
spare parts:
anchor bolts:
random factory documents and drawings (product certificate, product instruction manual, installation drawing, assembly instruction drawing, packing list). 4.25 Random factory documents shall comply with the provisions of ZB/TJ01035.5. 4.26
Under the condition that the user complies with the provisions of the product instruction manual, the manufacturer shall guarantee the membrane press for one year within one and a half years from the date of shipment. During the warranty period, if the product is indeed damaged or cannot work normally due to poor design or manufacturing, the manufacturer shall repair or replace parts and components free of charge.
5 Test method
5.1 The performance test of membrane press shall be in accordance with the provisions of GB3853. 5.2 The sound power level of the membrane press shall be measured in accordance with the provisions of GB4980. When the site cannot meet the conditions specified in GB4980, the simplified method specified in GB7022 is allowed.
5.3 The cleanliness measurement method of the membrane press is as follows: disassemble the membrane press after assembly, and use a detergent to clean the body, the inside of the cylinder, the curved surface of the cylinder membrane cavity, the oil distribution plate, the crankshaft, the connecting rod, the air valve, the crosshead and other parts and components in contact with the oil. After the dirt is filtered through a sieve with a basic mesh size of 0.08mm, it is heated to 80℃ and dried for 1h. The residue is weighed with an ordinary balance of not less than grade 7, and the weight is the cleanliness value.
5.4 The vibration measurement method of the membrane press shall be in accordance with the provisions of GB7777. 6 Inspection rules
6.1. Inspection type
Type inspection;
a.
b. Factory inspection;
e. Sampling inspection.
6.2 Type inspection
6.2.1 The trial-produced membrane press (including new products and old products transferred to the factory) shall be subject to type inspection. The recommended continuous operation time for type inspection is not less than 500 hours, of which 48 hours shall be operated at a continuous overpressure of 5%. 4
JB/T6905-93
Note: During the continuous operation, shutdown due to force majeure is allowed. 6.2.2 For the membrane press in normal production, if there are major changes in structure, materials, and processes that may affect product performance, or when the membrane press that has been shut down for a long time resumes production, type inspection shall be carried out. During the inspection, the continuous operation time at full load shall be no less than 200 hours, of which 24 hours shall be operated at a continuous overpressure of 5%.
6.2.3 For membrane presses in normal production, a type inspection shall be carried out periodically or after a certain number of operations have been accumulated. During the inspection, the continuous operation time at full load shall be no less than 24 hours, of which 4 hours shall be operated at a continuous overpressure of 5%. 6.2.4 The items of type inspection shall be in accordance with the following provisions: 6.2.4.1 Check the assembly quality of each component and the correctness of their interaction. 6.2.4.2 At the beginning and end of the operation of the membrane press, a performance test shall be carried out to measure the suction and exhaust temperatures, suction and exhaust pressures, water consumption, volume flow rate and specific power index of each level of the membrane press under the specified working conditions, and measure the noise sound power level and vibration intensity. 6.2.4.3 After the operation is completed, the machine should be disassembled for inspection, and the wear of the wearing parts and friction surfaces should be measured and recorded. The wear should be normal. 6.3 Factory Inspection
Each membrane press should be inspected before delivery. The factory inspection test should be carried out after the membrane press is running stably, and the full load should be continuously operated for more than 2 hours. In the inspection process, in addition to checking the correctness of the interaction between the assembled mass disk and the parts and components, the volume flow, exhaust pressure and temperature at each level, oil pressure, oil temperature, cooling water temperature, etc. should be measured by simplified performance test methods. 6.4 Sampling Inspection
6.4.1 The membrane presses produced in batches should be inspected by sampling. The sampling plan shall be the one-time sampling plan specified in Table 5. Table 5
Batch
N
2~15
Quantity
51~90
91~150
Sample size
2
3
5
6.4.2, the membrane presses to be inspected shall be subject to the following tests: One-time sampling plan
Qualified judgment number
Ac
0
o
1
(unit)
Number of unqualified judgments
Re
1
1
2
Continuous operation for more than 24 hours, in addition to checking the working conditions of all mechanisms during operation, the volume flow, specific power, noise power level, suction and exhaust temperatures at all levels, suction and exhaust pressure, oil temperature, cooling water temperature and water consumption of the membrane press under the specified working conditions should also be measured. In addition, another unit should be disassembled and checked for cleanliness.
6.4.3 When the batch of products inspected is unqualified, the manufacturer should check the batch of products one by one and remove or repair the unqualified products found. 7 Marking, packaging and storage
7.1 Each membrane press should have a product nameplate fixed in a conspicuous and flat position. The nameplate should comply with the provisions of GB/T13306 and should at least indicate the following information:
a
b.
e
d.
e.
T.
g.
h.
1.
J.
Product model:
Product name:
Nominal volume flow, m*/h;
Nominal suction pressure, MPa;
Rated exhaust pressure, MPa;
Shaft power, kw;
Speed.r/min;
Overall dimensions (length × width × height), mm
Net weight, kg:
Factory number:
k, factory date and month:
3B/T690593
1. Manufacturer name (export products shall be marked with "People's Republic of China"). 7.2 The packaging of the membrane press shall comply with the provisions of GB/T13384. 7.3 The membrane press shall be stored in a dry and ventilated warehouse or a covered place that is not exposed to moisture. 7.4 From the time of shipment, the manufacturer shall ensure that the product will not be corroded or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supply and demand parties.
Additional remarks:
This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. The main drafters of this standard are Ye Yongchu and Li Yongjin.22 The unprocessed inner surface of the membrane press should be painted to prevent rust. 4.23
4. 24
a.
b.
c.
d.
e.
f.
g.
h.
The rotation direction of the membrane press should be clearly marked. The complete set supply scope of the membrane press includes:
membrane press,
motor:
transmission device:
control instrument and its accessories;
special tools:
spare parts:
anchor bolts:
random factory documents and drawings (product certificate, product instruction manual, installation drawing, assembly instruction drawing, packing list). 4.25 Random factory documents should comply with the provisions of ZB/TJ01035.5. 4.26
Under the conditions that the user complies with the product manual, the manufacturer shall guarantee the membrane press for one year within one and a half years from the date of delivery. During the warranty period, if the product is indeed broken or cannot work normally due to poor design or manufacturing, the manufacturer shall repair or replace the parts and components free of charge.
5 Test method
5.1 The performance test of the membrane press shall be in accordance with the provisions of GB3853. 5.2 The sound power level measurement of the membrane press shall be in accordance with the provisions of GB4980. When the site cannot meet the conditions specified in GB4980, the simplified method specified in GB7022 is allowed.
5.3 The cleanliness measurement method of the membrane press is as follows: disassemble the membrane press after assembly, and use a detergent to clean the body, the inside of the cylinder, the cylinder membrane cavity surface, the oil distribution plate, the crankshaft, the connecting rod, the air valve, the crosshead and other parts and components that come into contact with the oil. After the dirt is filtered through a sieve with a basic mesh size of 0.08mm, it is heated to 80℃ and dried for 1 hour. The residue is weighed with an ordinary balance of not less than grade 7. The weight is the cleanliness value.
5.4 The vibration measurement method of the membrane press is in accordance with the provisions of GB7777. 6 Inspection rules
6.1. Inspection type
Type inspection;
a.
b. Factory inspection;
e. Sampling inspection.
6.2 Type inspection
6.2.1 Trial-produced membrane presses (including new products and old products produced in the transferred factory) shall be subject to type inspection. The recommended continuous operation time at full load for type inspection shall not be less than 500 hours, of which 48 hours shall be operated at a continuous overpressure of 5%. 4
JB/T6905-93
Note: During the continuous operation, shutdown due to force majeure is allowed. 6.2.2 Normally produced membrane presses shall be subject to type inspection when there are major changes in structure, materials, and processes that may affect product performance or when a membrane press that has been shut down for a long time resumes production. During the inspection, the continuous operation time at full load shall not be less than 200 hours, of which 24 hours shall be operated at a continuous overpressure of 5%.
6.2.3 Normally produced membrane presses shall be subject to type inspection periodically or after a certain number of them have been accumulated. During the inspection, the continuous operation time at full load shall not be less than 24 hours, of which 4 hours shall be operated at a continuous overpressure of 5%. 6.2.4 The items of type inspection shall be in accordance with the following provisions: 6.2.4.1 Check the assembly quality and correctness of interaction of each component. 6.2.4.2 At the beginning and end of the operation of the membrane press, a performance test shall be carried out to measure the suction and exhaust temperatures, suction and exhaust pressures, water consumption, volume flow rate, specific power index of each level of the membrane press under the specified working conditions, and measure the noise power level and vibration intensity. 6.2.4.3 After the operation is completed, it shall be disassembled for inspection, and the wear of wearing parts and friction surfaces shall be measured and recorded. The wear should be normal. 6.3 Factory inspection
Each membrane press shall be inspected before delivery. The factory inspection test shall be carried out after the membrane press runs stably and runs continuously at full load for more than 2 hours. In the inspection process, in addition to checking the correctness of the assembly of the mass disk and the interaction of the parts and components, the simplified performance test method shall be used to measure the volume flow rate, exhaust pressure and temperature at each level, oil pressure, oil temperature, cooling water temperature, etc. 6.4 Sampling inspection
6.4.1 The membrane presses produced in batches shall be sampled and inspected. The sampling plan shall be the primary sampling plan specified in Table 5. Table 5
Batch
N
2~15
Quantity
51~90
91~150
Sample size
2
3
5
6.4.2 The membrane presses sampled shall be subjected to the following tests: Primary sampling plan
Qualified judgment number
Ac
0
o
1
(unit)
Number of unqualified judgments
Re
1
1
2
Continuous operation for more than 24 hours, in addition to checking the working conditions of all mechanisms during operation, the volume flow, specific power, noise power level, suction and exhaust temperatures at all levels, suction and exhaust pressure, oil temperature, cooling water temperature and water consumption of the membrane press under the specified working conditions should also be measured. In addition, another unit should be disassembled and checked for cleanliness.
6.4.3 When the batch of products inspected is unqualified, the manufacturer should check the batch of products one by one and remove or repair the unqualified products found. 7 Marking, packaging and storage
7.1 Each membrane press should have a product nameplate fixed in a conspicuous and flat position. The nameplate should comply with the provisions of GB/T13306 and should at least indicate the following information:
a
b.
e
d.
e.
T.
g.
h.
1.
J.
Product model:
Product name:
Nominal volume flow, m*/h;
Nominal suction pressure, MPa;
Rated exhaust pressure, MPa;
Shaft power, kw;
Speed.r/min;
Overall dimensions (length × width × height), mm
Net weight, kg:
Factory number:
k, factory year and month:
3B/T690593
1. Manufacturer name (export products shall be marked with "People's Republic of China"). 7.2 The packaging of the membrane press shall comply with the provisions of GB/T13384. 7.3 The membrane press shall be stored in a dry and ventilated warehouse or a covered place that is not exposed to moisture. 7.4 From the time of shipment, the manufacturer shall ensure that the product will not be corroded or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supply and demand parties.
Additional remarks:
This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. The main drafters of this standard are Ye Yongchu and Li Yongjin.22 The unprocessed inner surface of the film press should be painted to prevent rust, 4.23
4. 24
a.
b.
c.
d.
e.
f.
g.
h.
The rotation direction of the membrane press should be clearly marked. The complete supply range of film presses includes:
film press,
motor:
transmission device:
control instrument and its ancillary devices;
special Tools:
Spare parts:
Anchor bolts:
Random factory documents and drawings (product certificate, product instruction manual, installation drawing, assembly seal drawing, packing list). 4.25 The random factory documents should comply with the regulations of ZB/TJ01035.5. 4.26
Under the condition that the user abides by the product instruction manual, the manufacturer shall guarantee the film press for one year from the date of shipment. During the warranty period, the product is indeed defective due to design or When the machine is damaged due to poor manufacturing or cannot work normally, the manufacturer shall repair or replace parts and components free of charge.
5 Test Methods
5.1 Film press performance test shall be in accordance with the provisions of GB3853. 5.2 The sound power level of the membrane press is measured according to the regulations of GB4980. When the site cannot meet the conditions specified in GB4980, the simple method specified in GB7022 is allowed to be used.
5.3 The cleanliness measurement method of the membrane press is: disassemble the membrane press after assembly, and use detergent to clean the fuselage, inside the cylinder, cylinder membrane chamber surface, oil distribution plate, crankshaft, The surfaces of connecting rods, air valves, crossheads and other parts and components in contact with the oil. After the dirt is filtered through a screen with a basic mesh size of 0.08mm, it is heated to 80°C and dried for 1 hour to remove the residue. For ordinary scales with properties lower than level 7, the weight obtained is the cleanliness value.
5.4 The membrane press vibration measurement method is in accordance with the provisions of GB7777, 6 Inspection Rules
6.1, Inspection Type
Type Inspection;
a.
b .Factory inspection;
e. Sampling inspection.
6.2 Type inspection
6.2.1 Trial-produced film presses (including new products and old products produced by factory transfer) should undergo type inspection. The recommended continuous operation time after the type inspection is not less than 500h , including 48 hours of continuous overpressure operation of 5%, 4
JB/T6905-93
Note: During the continuous operation, shutdowns caused by irresistible cases are allowed, 6.2.2 Normal production Film presses should undergo type inspection if there are major changes in structure, materials, and processes that may affect product performance, or when a film press that has been out of production for a long time resumes production. During the inspection, the continuous operation time at full load should be no less than 200 hours, of which 24 hours should be continuous operation at 5% overpressure.
6.2.3. Normally produced film presses should undergo a type inspection periodically or after accumulating a certain quantity. During the inspection, the continuous operation time at full load shall be no less than 24 hours, of which 4 hours shall be continuous operation at 5% overpressure. 6.2.4 Type inspection items are as follows: 6.2.4.1 Check the assembly quality and correctness of interaction of each component. 6.2.4.2 At the beginning and end of the operation of the membrane press, conduct a performance test to measure the membrane pressure. The suction and exhaust temperatures, suction and exhaust pressures, water consumption, volume flow and specific power indicators of the machine at all levels under specified working conditions are measured, and the noise power level and vibration intensity are measured. 6.2.4.3 After operation, it should be disassembled and inspected, and the wear amount of wearing parts and each friction surface should be measured and recorded. The wear should be normal. 6.3 Factory inspection
Each membrane press should undergo factory inspection. The test should be carried out after the membrane press has stabilized and operated continuously at full load for more than 2 hours. During the inspection process, in addition to checking the correctness of the interaction between the assembly plate and parts and components, the simplified performance test method should be used to measure the volumetric flow rate and discharge at all levels. Air pressure and temperature, oil pressure, oil temperature, cooling water temperature, etc. 6.4 Sampling inspection
6.4.1 The film presses produced in batches shall be subject to sampling inspection, and the sampling plan shall be based on the one-time sampling plan specified in Table 5. Table 5
Batch
N
2~15
Quantity
51~90
91~150
Sample Size
2
3
5
6.4.2. The film press for random inspection should undergo the following tests: one-time sampling plan
Qualification determination number| |tt||Ac
0
o
1www.bzxz.net
（台）
Number of unqualified judgments
Re||tt| |1
1
2
In continuous operation for more than 24 hours, in addition to checking the working conditions of all mechanisms during operation, the volumetric flow rate of the membrane press under specified working conditions should also be measured , specific power, noise sound power level, suction and exhaust temperatures at all levels, suction and exhaust pressure, oil temperature, cooling water temperature and water consumption. In addition, another unit should be disassembled and checked for cleanliness.
6.4.3 When the batch inspected is unqualified, the manufacturer shall inspect the batch of products one by one and remove or repair the found substandard products. 7 Marking, packaging and storage
7.1 Each film press should have a product nameplate fixed on an obvious and flat part. The nameplate should comply with the regulations of GB/T13306. At least the following content should be marked on the nameplate: ||tt| |a
b.
e
d.
e.
T.
g.
h.
1.
J.
Product model:
Product name:
Nominal volume flow, m*/h;
Nominal Suction pressure, MPa;
Rated exhaust pressure, MPa;
Shaft power, kw;
Speed.r/min;
Overall dimensions (length × width × height)), mm
Net weight, kg:
Factory number:
k, Factory year and month:
3B/T690593
1. Name of the manufacturer (export products are marked with the words "People's Republic of China\"). 7.2 The packaging of the film press should comply with the regulations of GB/T13384. 7.3 The film press should be stored in a dry and ventilated warehouse or a covered place that is not affected by moisture. 7.4 From the time of shipment, the heritage factory shall ensure that the products will not be rusted or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supplier and the buyer
Additional instructions: || tt||This standard is proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery and Industry. The main drafter of this standard is Ye Yongchu. Li Yongjin.4. The vibration measurement method of the film press is in accordance with the provisions of GB7777. 6. Inspection rules
6.1, inspection type
Type inspection;
a.
b. Factory inspection;| |tt||e. Sampling inspection.
6.2 Type inspection
6.2.1 Trial-produced film presses (including new products and old products produced by factory transfer) should undergo type inspection. The recommended continuous operation time after the type inspection is not less than 500h , including 48 hours of continuous overpressure operation of 5%, 4
JB/T6905-93
Note: During continuous operation, shutdowns caused by irresistible cases are allowed, 6.2.2 Normal production Film presses should undergo type inspection if there are major changes in structure, materials, and processes that may affect product performance, or when a film press that has been out of production for a long time resumes production. During the inspection, the continuous operation time at full load should be no less than 200 hours, of which 24 hours should be continuous operation at 5% overpressure.
6.2.3. Normally produced film presses should undergo a type inspection periodically or after accumulating a certain quantity. During the inspection, the continuous operation time at full load shall be no less than 24 hours, of which 4 hours shall be continuous operation at 5% overpressure. 6.2.4 Type inspection items are as follows: 6.2.4.1 Check the assembly quality and correctness of interaction of each component. 6.2.4.2 At the beginning and end of the operation of the membrane press, conduct a performance test to measure the membrane pressure. The suction and exhaust temperatures, suction and exhaust pressures, water consumption, volume flow and specific power indicators of the machine at all levels under specified working conditions are measured, and the noise power level and vibration intensity are measured. 6.2.4.3 After operation, it should be disassembled and inspected, and the wear amount of wearing parts and each friction surface should be measured and recorded. The wear should be normal. 6.3 Factory inspection
Each membrane press should undergo factory inspection. The test should be carried out after the membrane press has stabilized and operated continuously at full load for more than 2 hours. During the inspection process, in addition to checking the correctness of the interaction between the assembly plate and parts and components, the simplified performance test method should be used to measure the volumetric flow rate and discharge at all levels. Air pressure and temperature, oil pressure, oil temperature, cooling water temperature, etc. 6.4 Sampling inspection
6.4.1 The film presses produced in batches shall be subject to sampling inspection, and the sampling plan shall be based on the one-time sampling plan specified in Table 5. Table 5
Batch
N
2~15
Quantity
51~90
91~150
Sample Size
2
3
5
6.4.2. The film press for random inspection should undergo the following tests: one-time sampling plan
Qualification determination number| |tt||Ac
0
o
1
（台）
Number of unqualified judgments
Re||tt| |1
1
2
When operating continuously for more than 24 hours, in addition to checking the working conditions of all mechanisms during operation, the volumetric flow rate of the membrane press under specified working conditions should also be measured , specific power, noise sound power level, suction and exhaust temperatures at all levels, suction and exhaust pressure, oil temperature, cooling water temperature and water consumption. In addition, another unit should be disassembled and checked for cleanliness.
6.4.3 When the batch inspected is unqualified, the manufacturer shall inspect the batch of products one by one and remove or repair the found substandard products. 7 Marking, packaging and storage
7.1 Each film press should have a product nameplate fixed on an obvious and flat part. The nameplate should comply with the regulations of GB/T13306. At least the following content should be marked on the nameplate: ||tt| |a
b.
e
d.
e.
T.
g.
h.
1.
J.
Product model:
Product name:
Nominal volume flow, m*/h;
Nominal Suction pressure, MPa;
Rated exhaust pressure, MPa;
Shaft power, kw;
Speed.r/min;
Overall dimensions (length × width × height)), mm
Net weight, kg:
Factory number:
k, Factory year and month:
3B/T690593
1. Name of the manufacturer (export products are marked with the words "People's Republic of China\"). 7.2 The packaging of the film press should comply with the regulations of GB/T13384. 7.3 The film press should be stored in a dry and ventilated warehouse or a covered place that is not affected by moisture. 7.4 From the time of shipment, the heritage factory shall ensure that the products will not be rusted or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supplier and the buyer
Additional instructions: || tt||This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. Li Yongjin.4. The vibration measurement method of the film press is in accordance with the provisions of GB7777. 6. Inspection rules
6.1, inspection type
Type inspection;
a.
b. Factory inspection;| |tt||e. Sampling inspection.
6.2 Type inspection
6.2.1 Trial-produced film presses (including new products and old products produced by factory transfer) should undergo type inspection. The recommended continuous operation time after the type inspection is not less than 500h , including 48 hours of continuous overpressure operation of 5%, 4
JB/T6905-93
Note: During continuous operation, shutdowns caused by irresistible cases are allowed, 6.2.2 Normal production Film presses should undergo type inspection if there are major changes in structure, materials, and processes that may affect product performance, or when a film press that has been out of production for a long time resumes production. During the inspection, the continuous operation time at full load should be no less than 200 hours, of which 24 hours should be continuous operation at 5% overpressure.
6.2.3. Normally produced film presses should undergo a type inspection periodically or after accumulating a certain quantity. During the inspection, the continuous operation time at full load shall be no less than 24 hours, of which 4 hours shall be continuous operation at 5% overpressure. 6.2.4 Type inspection items are as follows: 6.2.4.1 Check the assembly quality and correctness of interaction of each component. 6.2.4.2 At the beginning and end of the operation of the membrane press, conduct a performance test to measure the membrane pressure. The suction and exhaust temperatures, suction and exhaust pressures, water consumption, volume flow and specific power indicators of the machine at all levels under specified working conditions are measured, and the noise power level and vibration intensity are measured. 6.2.4.3 After operation, it should be disassembled and inspected, and the wear amount of wearing parts and each friction surface should be measured and recorded. The wear should be normal. 6.3 Factory inspection
Each membrane press should undergo factory inspection. The test should be carried out after the membrane press has stabilized and operated continuously at full load for more than 2 hours. During the inspection process, in addition to checking the correctness of the interaction between the assembly plate and parts and components, the simplified performance test method should be used to measure the volumetric flow rate and discharge at all levels. Air pressure and temperature, oil pressure, oil temperature, cooling water temperature, etc. 6.4 Sampling inspection
6.4.1 The film presses produced in batches shall be subject to sampling inspection, and the sampling plan shall be based on the one-time sampling plan specified in Table 5. Table 5
Batch
N
2~15
Quantity
51~90
91~150
Sample Size
2
3
5
6.4.2. The film press for random inspection should undergo the following tests: one-time sampling plan
Qualification determination number| |tt||Ac
0
o
1
（台）
Number of unqualified judgments
Re||tt| |1
1
2
When operating continuously for more than 24 hours, in addition to checking the working conditions of all mechanisms during operation, the volumetric flow rate of the membrane press under specified working conditions should also be measured , specific power, noise sound power level, suction and exhaust temperatures at all levels, suction and exhaust pressure, oil temperature, cooling water temperature and water consumption. In addition, another unit should be disassembled and checked for cleanliness.
6.4.3 When the batch inspected is unqualified, the manufacturer shall inspect the batch of products one by one and remove or repair the found substandard products. 7 Marking, packaging and storage
7.1 Each film press should have a product nameplate fixed on an obvious and flat part. The nameplate should comply with the regulations of GB/T13306. At least the following content should be marked on the nameplate: ||tt| |a
b.
e
d.
e.
T.
g.
h.
1.
J.
Product model:
Product name:
Nominal volume flow, m*/h;
Nominal Suction pressure, MPa;
Rated exhaust pressure, MPa;
Shaft power, kw;
Speed.r/min;
Overall dimensions (length × width × height)), mm
Net weight, kg:
Factory number:
k, Factory year and month:
3B/T690593
1. Name of the manufacturer (export products are marked with the words "People's Republic of China\"). 7.2 The packaging of the film press should comply with the regulations of GB/T13384. 7.3 The film press should be stored in a dry and ventilated warehouse or a covered place that is not affected by moisture. 7.4 From the time of shipment, the heritage factory shall ensure that the products will not be rusted or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supplier and the buyer
Additional instructions: || tt||This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. Li Yongjin.
Product model:
Product name:
Nominal volumetric flow rate, m*/h;
Nominal suction pressure, MPa;
Rated exhaust Pressure, MPa;
Shaft power, kw;
Speed.r/min;
Dimensions (length × width × height)), mm
Net weight, kg :
Factory number:
k, Factory year:
3B/T690593
1. Name of the manufacturer (export products are marked with the words "People's Republic of China\"). 7.2 The packaging of the film press should comply with the regulations of GB/T13384. 7.3 The film press should be stored in a dry and ventilated warehouse or a covered place that is not affected by moisture. 7.4 From the time of shipment, the heritage factory shall ensure that the products will not be rusted or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supplier and the buyer
Additional instructions: || tt||This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. Li Yongjin.
Product model:
Product name:
Nominal volumetric flow rate, m*/h;
Nominal suction pressure, MPa;
Rated exhaust Pressure, MPa;
Shaft power, kw;
Speed.r/min;
Dimensions (length × width × height)), mm
Net weight, kg :
Factory number:
k, Factory year:
3B/T690593
1. Name of the manufacturer (export products are marked with the words "People's Republic of China\"). 7.2 The packaging of the film press should comply with the regulations of GB/T13384. 7.3 The film press should be stored in a dry and ventilated warehouse or a covered place that is not affected by moisture. 7.4 From the time of shipment, the heritage factory shall ensure that the products will not be rusted or damaged due to poor packaging within one year under normal storage and transportation conditions. Special requirements shall be implemented according to the agreement between the supplier and the buyer
Additional instructions: || tt||This standard was proposed by the National Compressor Standardization Technical Committee. This standard is under the jurisdiction of the Hefei General Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Beijing No. 1 General Machinery Factory. Li Yongjin.
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