Some standard content:
ICS 47.020.20
National Standard of the People's Republic of China
GB/T 8413—1996
CZY Marine Self-priming Centrifugal Oil Pump
Marine self-priming centrifugal oil pump CZY-type1996-04-25 Issued
1997-01-01 Implementation
National Technical Supervision Kitchen
National Standard of the People's Republic of China
CZY Marine Self-priming Centrifugal Oil Pump
Marine self-priming centrifugal oil pump nllpumpCzv-tipe1 Subject and applicable range GB/T8413-1996 #ca6418-8 This standard specifies the product classification, technical requirements, test methods, inspection marking, packaging, transportation and storage of CZY type super-absorbent centrifugal oil pump (hereinafter referred to as the "czv-tipe"). This standard is applicable to self-priming centrifugal oil pumps that can be used to pump gasoline, coal and light diesel, and is also applicable to water pumps and water pumps with a medium temperature not exceeding ten degrees. Reference standards GB57U-65 Marine iron flange GB572-65 Cast copper flange GB/T 68—93
Using the upper return
GB3214—91
Measurement of the washing volume of water system
GBS216-99 Test methods for centrifugal pumps, mixed flow pumps, axial flow pumps and vortex pumps GRE661-85
Axial suction centrifugal pumps Mechanical narrow seal and material flow control dimensions GB10832-89 Centrifugal pumps for use. General technical conditions for floating boiler pumps GB/T133B4—92 General packaging technology for electromechanical products 3 Product classification
Basic numbers of oil system according to the table!
Approved by the State Technical Supervision Commission on April 25, 1996 and implemented on January 1, 1997
40CZY-25
1XZY-32
hzY-25||tt ||CZY-32
SCZY-sc
SUCZY-S
BaCZY-25
F5CZY-35
65C2Y-4
F52Y-5C
SK2Y-tC
HKZY-SC
HIZY-RC||tt| |T00L:.Y-50
notY-Su
F00:2Y-50
LE0C2Y-63
150:2Y-XU
2noy-u
2001:7.Y-65
2nm:7.y-8u
Yuanjingdian
GB/T 8413 --1996
Note:) The required steam margin in the table is the received value measured when the internal check network is not installed. The mutual system in the table usually has no replacement effect. 3.2 Product marking
3.2.1 Oil pump model identification:
Must pay attention to the following
3.2.2 Marking example
GB/T 8413-1996
Yang Wang + m
This is oil, see French standard for special requirements of oil pump self-priming
Discharge system concave diameter m
Imported silk is 1m for high-pressure oil pump: self-priming oil pump record DOCZY-63GB/T8413-1964 Technical requirements
4.1 Environmental conditions
The oil pump should be able to work normally under the following operating conditions: Temperature: 0~50℃
Humidity, not more than 98℃
Risk: ±22.5%
Pitch: 1-15 cycles (510g)
Horizontal vibration, ±15°
Vertical section: ±5*
4.2 Performance
4.2.1 Flow range, efficiency and shaft power
The oil pump manufacturer should provide the performance curves of the range, efficiency, required residual power (NPH) and auxiliary power corresponding to the flow rate under specified conditions, and provide the allowable working temperature of the pump on the performance curve. The manufacturer shall also provide the user with conversion data such as flow rate, stroke, shaft power, etc. according to the viscosity of the medium used. 4.2.2 Gas Candle Margin (CASH)
4.2.2.1 The oil manufacturer shall ensure that the required cavitation table shock absorber (NPSH) value of the oil pump at a wide flow rate is sufficient. The required cavitation shock absorber margin shall be based on the value of warm water.
4.2.2.2 The required cavitation shock absorber margin shall be the critical NPSH). The value shall be determined after a margin of not less than 0.3m. 4.2.3 Self-priming ability. 1
The self-priming ability of the injection pump shall meet the following requirements: a. When the self-priming height of the pump with an inlet diameter less than 150mm is 6, the self-priming time is less than 10s. When the self-priming height of the pump with an inlet diameter greater than 150mm is 5m, the self-priming time shall be less than 120s. 4.2.4 Power
4.2.4.1 The ratio of the rated power of the oil pump to the rated working condition shaft power shall be above the curve shown in Figure 1. The shaft power of the pump shall be calculated according to the formula <13. HQ
1 000 X 3600bZxz.net
In the formula, p
rated shaft power of the oil
first weight, N/m;
head.m;
flow rate, power
CB8413—1996
power rating kw
4.2.4.2 When the maximum shaft power of the oil accumulation does not exceed the rated power of the allocated reactor, it may not be subject to the view of Figure 1. The percentage is limited to a certain value. 4.2.5 Suction pressure and critical speed
4.2.5.1 The maximum suction pressure of the oil pump shall not exceed 0.1MPa 4.2.5.2 The leakage of the piston seal shall not be greater than 10c/h. 4.3 Structure and manufacturing
4.3.1 Shaft and seal
4.3.1.1 The oil pump shaft shall not be designed as a rigid shaft. The maximum speed of the oil pump shall be 20% lower than the normal critical speed. 4.3.1.2 The cavity size during recovery shall comply with the provisions of G1 and G2. 4.3.2 Bearings and pump bearings
4.3.2.1 The ball bearings of the pump shaft shall be selected according to the requirements of CB1562 and GB635. 4.3.2.2 When the product of the inner diameter D of the bearing and the new fixed speed n is D-n216001-+:/min, the bearing shall be lubricated with oil. When the product of the rated shaft power P and the desired fixed speed n is Pn2-2000MCkW·r/min, the bearing shall be dynamic.
4.3.2.3 The surface of the bearing body shall not exceed 7%, and the surface of the bearing shall not exceed 35. 4.3.2.4 When the flow rate is greater than 200/h, the bearing lubrication hole shall be considered. 4.32.5 The bearing body shall be provided with a grease sump or a grease sump. 4.3.2.6 When oil is used to transport flammable and explosive media, explosion or isolation measures should be taken for the prime mover. 4.3.3 The connection flange of the oil pipe should comply with the relevant provisions of U563, CB57 and B57: 4.3.4 Castings 4.3.4.1 The rotating parts are free of holes, sand holes, cracks and other pits. The surface of the parts should be cleaned by beating, repair, sandblasting, shot blasting and other methods. The remaining part of the reverse side of the parting surface should be half of the residual part. 4.3.4.2 The parts should be tested by reverse water. The test bed pressure is 1.5 times the maximum working pressure of the pump. The underwater test time is not less than 10 days. At this time, the castings shall not have leakage and damage. The surface of the castings should be clean and the inner surface of the shaft oil chamber should be clean.
4.3.4.3 It is forbidden to use plugging parts. After welding, the parts should be tested with water pressure. The pressure should be 1.7 of the working force.
4.A Balance, dynamic and maintenance
4.4.1 Static balance
GB/T8413—1996
The impeller of the oil pump must be tested for leveling. The static balance should not exceed G6.3 in Table 2. S
#花童#
60e955:5603no5
rotation ni/mio
static balance allowable unbalanced moment sound meets the formula (2> requirement M,se+G
where: M,\.static unbalanced moment frequency.Nm
allowable eccentricity m allowable eccentricity can be found in 2 medium speed and G6.3 level, G
impeller weight,N.
4.4.2 The allowable dynamic unbalanced moment of dynamic balancing shall meet the requirements of formula (3). ,
武中，M，dynamic unbalanced moment·，
4.4.3 Selection of flat impeller type
4.4.3.1 The type can be selected according to Figure 5. In the figure, the horizontal coordinate 6/D is the ratio of the impeller width to the outer diameter, and the horizontal coordinate is the rated speed.
2 When the ratio 6/D, the coordinate point composed of the impeller is located at the static bag of the impeller 3, the impeller only needs to be checked for static balance. 4. 4. 3. 2
Cross-section
GB/T 8413-1996
Dynamic balance area
Balance area
Figure 3 Balance type selection
4.4.3.3 When the ratio is convex/D, and the coordinate points are located in the dynamic balance area of 3, the rotor must be dynamically balanced. 4.4.3.4 When the ratio is 6/D, and the coordinate points are located in the dynamic balance area of 3, the static balance result should be used to decide whether to perform a dynamic balance test. That is, when the residual unevenness of the impeller is less than the specified value of 4,4.1, no dynamic balance test is required. Otherwise, dynamic balance check shall be carried out. 4.4.4 Dynamic vibration test 4.4.4.1 The self-excited vibration intensity limit value of the pump shall meet the requirements of Table 2. Table 2 Dynamic vibration limit value 4.4.4.2 The system shall be subjected to environmental dynamic test to check whether there is any vibration and to assess the strength of the system. After the test, the system parts shall not be damaged to affect the normal operation of the pump. 4.4.5 Noise The average sound pressure level value of the oil multiplied by the average sound pressure level shall meet the requirements of formula (4): Lp 5 + 9. 7 gtu + n)
In the formula,
Rated rotary speed of the material is.T/mp
-the water power of the pump, kwP, which can be calculated by formula (5): y.Q+H
P=1990.6G2
4.5 Materials
Based on the different types of components used, the materials for the main components of the pump shall be selected as specified in Table 3. Other materials with performance not inferior to those specified in Table 3 may be used as substitutes.
Military name
System position, benefit, limit, secret step
Certification and connection device
Parts
Material brand
2.m2n163i4
CrieNi9Ti
QAI 5-1
QT 4E2-10
ZCaSuoP1
HSn62-;
ZG25U-45G
Or structural steel
GB/T B413—1996
Standard source number
G1175-87
GB1223—84
G 4281
GB1318—89
GB 117—
GB4424—84
GB 11353E9
Sealing grade
97 450-20
ZCuZn1S4
GA1 B-4
Q1450-1n
ZCuSuLUPL
QT450-10
Previous: This test method is for the preparation of high-corrosive materials for seawater systems. The test results are as follows: 5 Test method
5.1 Test equipment
The measurement accuracy of the test case and measuring instruments shall comply with the requirements of GB3216. 5.2 Running test GB SAA-SH G1176—83 GH132—54 GB4429-81 G1348—88 GD1176—E7 GB 4424-84 GE134888 5.2.1 When carrying out the running test within the specified working range, the oil pump shall run smoothly without abnormal vibration and noise. The maximum load of the bearing shall comply with the requirements of 4.3.2.3. 5.2.2 Close the inlet valve and turn to 6 nic. The seals of the system shall not be damaged. 5.2.3 The operation time is based on the temperature stabilization, but it is not powered by the heat setting in Table 4. Table 4
New setting says push rate
Turn-by-turn test can be seen
5.3 Performance test
>1G -50
>50~:00
> 1DG--400
5.3.1 Performance test Determine the relationship between the head, power output, efficiency and flow rate of the oil pump at rated speed, and draw their performance bands,
Performance test method, performance deviation and accuracy shall be in accordance with the provisions of G3214 and GB3215, 5.3.2
5.3.3 The maximum flow rate of the performance test shall be at least 120% of the flow plate. 5.3.4 The fixed-point flow rate and range of the oil pump shall be assessed in accordance with Class B of GB321t. 5.3.5 The test results shall comply with the requirements in Table 1: 5.4 Performance test
5.4.1 The oil system shall be subjected to the factory performance test during the factory inspection. During the inspection, only the oil cumulative rated flow, the minimum allowable working flow and the shaft power at 120% of the rated flow shall be measured.
GR/T8413—1996
5.4.2 The non-performance test shall be conducted at the flow rate, operating speed and shaft power at a fixed time and point in accordance with GB3216. The results shall comply with the requirements in Table 1. 5.4.3 The method of the factory performance test shall comply with the provisions of GB3214 and GB3216. 5.5 Self-priming test
5.5.1 During the white suction test, the speed deviation shall be 10% of the rated speed. 5.5.2 Close the valve and let the oil pump self-prime for 5 minutes. 5.5.3 The self-priming test shall be conducted for no less than 3 times. The time from start to start of drainage shall be measured. 5.5.4 The test results shall be in accordance with 1.2.3. 5.6 Steam test
The cavitation test shall be conducted in accordance with the provisions of G1082. The critical residual volume (NP5H) at 0%, 1% and 12% of rated flow shall be measured respectively. The results shall meet the requirements of zero 1. 5.7 Noise test
5.7.1 The residual noise shall be measured by A weighted sound. 5.7. The maximum noise at rated speed and rated flow shall be 100%. The difference between the speed and the maximum flow shall be 0. 5.7.3 The ambient noise shall be lower than the system noise by more than 1B (A). Otherwise, the correction value, the calculation of the residual volume and the average pressure level shall be in accordance with the provisions of G1082.
5.7.4 The test results shall meet the provisions of 4.4.5. 5.8 Test
5.8.1 When there is no condition to carry out the slow speed test, the test piece shall be replaced by a fixed low incline test piece. 5.8.2 The fixed incline test shall be carried out for a minimum of 29
5.8.3 Carry out the mass balance incline test at the rated capacity, and the test result at 0:1b shall meet the requirements of 5. in GB1032. 5.9 Self-excited vibration test
5.91 Carry out the self-excited vibration test at a speed of 5 and a rated flow of 5 without steam or metal. Measure the self-excited vibration between the two relative squares.
5.9.2 The action intensity limit value Vm measured on the bearing body shall meet the requirements of 4.4.4.1. 5.10.1 The reverse alarm test includes resonance test and pre-alarm test, 5.1C.2 The resonance test and the vibration test method shall be carried out in accordance with GB10832, 5.10.3 The test result shall comply with the provisions of 4.4.4.1. 6. Inspection rules
6.1 Inspection classification
The inspection classification of oil pumps shall be based on factory inspection and type control. 6.2 Factory inspection
6.2.1 All oil products shall be inspected according to the factory inspection.
6.2.2 The factory inspection items and requirements shall be in accordance with Table 3. 6.34 Type inspection
6.3.1 The system shall be subjected to type test when any of the following conditions occur:
The first system produced by the transfer factory
The design, structure, material and process have been greatly modified and may affect the performance; d.
The system resumes production after a long period of suspension;
The factory inspection result is significantly different from the last type inspection; f.
When the national quality supervision agency proposes the requirement for type inspection. H
6.3.2 The type inspection items and requirements shall be in accordance with Table 5. Test items
Special test
Factory performance test
Performance test
Corrosion test
Acid production test
Self-peeling test
Material test
Self-dispersion test
Environmental test
Technical key points
3. 1,4, 2. 2
4.3.2.3.4.3.2.4
4. 4. 4.2
Marking, packaging, storage and warranty period
7.1 Marking
GB/T 8413-1996
or inspection
Factory inspection
Type inspection
Large. Medium. Small and two gears
A steering head and nameplate should be installed in a conspicuous position on the oil pump. The nameplate should comply with the provisions of GB/T13306. The content of the nameplate includes: Manufacturer name:
Pump name. Number
Oil system performance data (flow rate, blood/h, plug-in speed, m/min, motor power, k + required steam reserve, m) system weight, kg!
Factory number: The factory date,
Material: Mark.
7.2 Packaging and transportation
7.2.1 The product is packed in this box, and the packaging should comply with the provisions of GB/T13381. The inlet and outlet flanges and other holes of the pump should be blocked. 7.2.2
The system should be reliably fixed in the box after assembly, and the special tools, spare parts and accessories should also be reliably fixed in the box. The documents supplied with the pump include
Packaging list:
Factory qualification certificate:
Test receipt of the whole equipment
Use the environment certificate;
Parts processing area.
7.2.5 The markings on the outside of the packing box shall comply with the provisions of GB191. 7.3 Recommendations
7.3.1 The packaging box shall be stored in a place that is not exposed to sunlight, rain or water accumulation. The box shall be placed flat and shall not be directly in contact with the ground. 7.3.2 The effective oil seal period is 6 months. It shall be checked regularly and re-sealed when necessary. 7.4 Warranty period
If the product is stored, installed and used in accordance with the provisions of this standard and the instruction manual, the manufacturer shall repair the product free of charge within the warranty period if it is damaged due to manufacturing quality. The warranty period is 15 months from the date of issue. Additional remarks:
This standard was proposed by China Shipbuilding Industry Corporation. This standard was issued by the National Standardization Technical Committee for Machinery and Auxiliary Machinery. This standard was drafted by the Shanghai Ship Equipment Research Institute of China Shipbuilding Industry Corporation. The main drafters of this standard are Zhu Jiaxie and Qian Jingsang.
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