Some standard content:
J71 | | tt | | JB | ||Implemented by the Ministry of Mechanical and Electronic Industry of the People's Republic of China on 1993-01-01
Published
Mechanical Industry Standards of the People's Republic of China
High Temperature Cleaning Machine
Theme content and scope of application
JB/T6442-92
This standard specifies the type, basic parameters, technical requirements, test methods, marking, packaging and storage of electric high-temperature cleaning machines. This standard chamber is suitable for electric high-temperature cleaning machines with a rated discharge pressure not higher than 18MPa, a rated flow rate not higher than 15L/min, and a working temperature not higher than 150°C. The working medium contains a mixture of granular cleaning agent and clean water ( Hereinafter referred to as \cleaning machine\). 2 Reference standards
GB::32
GB:173
GB::76
GB:58
GB439
GB/ 13306
GB/ 13384
ZBJ::013
ZBJ::023
ZBJ::024
3 Terms
3.1 Business Working conditions
Test methods for small and medium-sized three-phase asynchronous motors Cast aluminum alloy
Cast copper alloy
Reciprocating ticket classification and name terminology
Gray iron castings||tt| |Signboard
General technical conditions for mechanical and electrical product packaging
Reciprocating pump parts and components hydraulic and hysteresis test Technical conditions for reciprocating micro-sized cleaning machines
Reciprocating micro-sized cleaning machines||tt ||Cleaning will operate under high pressure, 3.2 Steam process selection
Cleaning will operate at high temperature. 3.3 Its format and technique should comply with the provisions of GB7785. 4 Types and Basic Parameters
Test Methods
4.1 The cleaning machine is a mobile type, and the pump used for the cleaning machine is a horizontal triple reciprocating type. 4.2 Model
The cleaning model consists of uppercase Chinese pinyin letters and Arabic numerals, and is expressed as follows: RQ-
High-pressure working conditions Rated discharge pressure: expressed in numbers MPs Maximum temperature of working medium: expressed in numbers Indicates, unit ℃ cleaning machine code
Model example
RQ-140/13 high temperature cleaning machine
Approved by the Ministry of Mechanical and Electronics Industry on 1992-07-20 and implemented on 1993-01-01| |tt||1
JB/T 644292
The maximum temperature of the working medium of the high-temperature cleaning machine is 140℃, and the rated discharge pressure under high-pressure working conditions is 13MPa.4.3 Basic parameters
According to Table 1.
Table 1
Basic parameters
High pressure working conditions
New discharge pressure
Rated flow Q
Discharge pressure P||tt ||Rated flow Q
Steam conditions
High working medium quality and temperature T
With motor power P
Thermal power A
Maximum fuel consumption Quantity 9
5 Technical requirements
5.1
5.2
MPa
L/min
MPa
L/min
c
kw
kw
kg/h
RQ-130/8
8
RQ-130 /10
10
10
5
130
54
No.
RQ-140/13|| tt||13
2~4
RQ-140/15
15
15
RQ-150/18
18
7
140
7.5
Cleaning machines shall comply with the requirements of this standard and be manufactured in accordance with drawings and technical documents approved by prescribed procedures. The cleaning machine should meet the following requirements when running: a.
b.
c.
d.
e.
f.||tt ||The water circuit, oil circuit, and electric circuit are connected correctly:
There is no leakage on each static sealing surface, and there is no abnormal disturbance or sound from the unit; the safety valve should be sensitive and reliable, and the opening pressure should be 1.10~1.25 times the rated discharge pressure of the pump. : 5.5 | 0.04mg equivalent: 65
150
7.5
8
The working medium is clean water or dilute the concentration to 20% with pH7~10 cleaning agent (liquid), and then according to It is necessary to adjust the clean water mixture with a concentration of no more than 2% from the preparation box;
g.
h.
The temperature of the gun handle is not higher than 45℃;
is rated Within the temperature range, the temperature adjustment controller should freely adjust the heating temperature and control the combustion time to keep the temperature difference of the working medium within ±4°C:
.
i
Motor overload protection device It should be sensitive and reliable: the noise sound pressure level of the cleaning machine under high-pressure working conditions should not be greater than 85dB(A). The pump and injection system of the cleaning machine should comply with ZBJ71023, and can only be assembled after passing the ZBJ71024 test. 5.3 | tt |
The ambient temperature when the cleaning machine works is not lower than 5℃. The control voltage of the cleaning machine operating mechanism shall not be higher than 36V, 5.6
5.7
The pressure-bearing parts and components of the cleaning machine shall be subjected to a hydraulic test, and the test shall comply with the regulations of ZBJ71018. 5.8 The gray iron castings of the cleaning machine should comply with the regulations of GB9439; the aluminum castings should comply with the regulations of GB1173; the copper castings should comply with the regulations of GB1176.
5.9 The forgings of the cleaning machine should comply with the relevant standards. 5.10 The main parts of the cleaning machine, such as the work surface, should not have cracks, pressure decay, and inclusions that affect quality. The friction surface and sealing surface should not have scratches, 2
pores, bumps, and other defects that affect quality. , JB/T6442-92
5.11
The flow-passing parts of the cleaning machine should be made of corrosion-resistant materials or treated with corrosion resistance. After the machine body, pump valve and valve seat, water tank, and fuel tank are cleaned, a kerosene leakage test should be conducted according to ZBJ71018. 5.12
5.13
All military notes should be inspected and passed before assembly. Purchased and outsourced parts should be assembled with certificates of quality. The parts should be cleaned. The exposed non-machined surfaces after assembly should be Anti-rust primer should be applied, and then anti-rust paint should be applied. The processed surface should be treated to prevent 5.14
rust (except ferrous metals and stainless steel). The cleaning machine supplied by 5.15 Chengshan should include: a sliding washing machine (Including high-pressure pump unit, combustion system, water heating system, injection system, electronic control system, water tank, etc.): a.
and other parts shall not be less than 1/2 sets (sets);
b . ||tt | 5.16 Under the condition that the household abides by the provisions of the product manual, the manufacturer shall guarantee the cleaning machine within 18 months from the date of shipment 1a. During warranty period 3 and 6, if the product is damaged or fails to work properly due to poor manufacturing quality, the manufacturer shall be responsible for repairing or replacing parts for the user free of charge (excluding wearing parts).
6 Test Methods
6.1—General Provisions
The test medium is clean water at normal temperature.
6.1.1
The test should be carried out under high-pressure working conditions. In fact, the allowable deviation of the measured value relative to the rated value should comply with the provisions of Table 2. 6.1.2
Table 2
Measurement items
Pump discharge pressure
Pump speed or rotational speed
6.1.3 Actual measurement information is consistent with rated working conditions In case of deviation, conversion should be carried out according to ZBJ71024. 6.1.4. The allowable fluctuation range of the indicated values ??of measuring instruments and meters shall comply with the provisions of Table 3. Table 3
Measurement parameters
Three moving ranges allowed
Pressure
±s
Said volume
%
± 2
Allowable deviation of the actual measured value
not less than the rated value
±5% of the rated value
pump speed or rotational speed
±1|| tt||Temperature
c
±1
6.1.5 After confirming that the cleaning machine is running stably, all instrument readings should be read out at the same time, and the test data and calculation results should be recorded in the test Record tables, organize and draw emergency performance curves.
6.1.6 The accuracy of test instruments and meters should comply with the provisions of Table 4. All measuring instruments and instruments should be within the valid period of use and have verification certificates from the measurement department or relevant departments. Table 4
Measurement items
E force
Shallow scene
Pump construction or transfer
Instrument, instrument error
Type and sampling Inspection
±1. 0
± 1. 5
± 0. 5
%
Out
Inspection||tt| |±1. 5
±2.0
±1. 0
3
6.2 Pump and nozzle test
JB/T6442—92||tt ||The pump and nozzle tests are in accordance with the provisions of ZBJ71024, 6.3 Safety valve and pressure regulation test
6.3.1 The safety valve should be tested with the pump running alone, that is, gradually closing the discharge pipeline valve to increase the discharge pressure When the safety valve opening pressure is reached, the safety valve should act sensitively. When the discharge pressure value is reached, the pressure in the system will no longer rise. The test should be no less than 3 times, and a lead seal should be added after passing the test.
6.3.2 Within the rated discharge pressure range of the cleaning machine, the pressure regulating valve should be sensitive to 4 to 5 pressure points, and the test should be repeated three times. 6.4 Water softening test
6.4.1 Connect the water source, take 100mL of water sample from the pump inlet pipe, 6.4.2 Use 1mL of 5% sodium sulfide, 3~5mL of buffer, and 3~4 drops of chrome black to test the water sample Conduct water quality testing. 6.5 Inspection of high-pressure working conditions and steam working conditions
The cleaning machine operates under high-pressure working conditions and steam working conditions, and measures the corresponding flow rate and medium temperature respectively. 6.6 Full performance test
6.6.1 Full performance test of cleaning machine refers to the whole process test of transition from high-pressure working condition to steam working condition. 6.6.2 The cleaning machine operates from the high-pressure working condition, measures the flow rate and medium temperature at the same time, and then divides 3 to 4 pressure points equally within the rated discharge pressure range of the high-pressure working condition, and adjusts each pressure point according to the linear change law of flow-pressure. corresponding traffic. 6.6.3 Under the stable operating conditions of each pressure point, heat it to the highest temperature and measure the temperature value of its pressure point. Then cool down and adjust the next pressure point to continue the above measurement.
6.6.4 Measure the fuel consumption in the fuel tank under steam conditions. The measurement time is 5 to 10 minutes. The measured value is the maximum fuel consumption. 6.7 Continuous operation test
6.7.1 Cleaning The continuous operation test of the machine runs for a total of 100 hours, including a total of 50 hours of operation under steam conditions and a total of 100 hours of warm injection from the nozzle (i.e. 50 hours under steam conditions and 50 hours under high pressure conditions), and a nozzle continuous test comparison curve is drawn. 6.7.2 During the test, when the discharge pressure of the dish drops by 15% from its initial discharge pressure, the nozzle is judged to have failed. 6.7.3 During the test, the fuel injector should feed fuel and ignite sensitively. 6.8 Noise measurement
6.8.1 Measure the noise of the cleaning machine under high-pressure working conditions according to the provisions of Appendix C (Supplement) of GB7784. When measuring the noise, the spray gun and the pump unit should be separated from a noise source.
6.8.2 Take the system group and the spray gun as the center respectively, and measure a point on each side of the spray gun. The measuring point is 1m away from the side of the spray gun. 6.8.3 Calculate the logarithmic average sound pressure level of the pump and the spray gun respectively. The high value is used as the measured value, 6.9 Provisions on parameter measurement and measuring instrument accuracy 6.9.1 Flow
6.9.1.1 The volumetric method or gravimetric method is used for flow measurement. 6.9.1.2 When the volumetric method is used to measure the flow rate, the relative limit error of the container calibration shall not be greater than 0.05%, and the liquid level difference for each measurement shall not be less than 200mm.
6.9.1.3 When the gravimetric method is used to measure the flow rate, the sense of the scale shall be The amount should be less than 0.5% of the measured weight. 6.9.1.4 Use a timing meter to measure time, or indirectly measure time by measuring the pump speed. The accuracy of the timing or counting measurement shall not be less than 0.5%.
6.9.1.5 The flow measurement of the cleaning machine is at high pressure Under operating conditions, the jet collected in the liquid collector is measured within a certain time interval. 6.9.2 Pressure
6.9.2.1 The pressure is measured using elastic tube pressure gauges or other pressure measuring instruments. 6.9.2.2 The pressure gauge range should be selected so that the indicated average value is 1/2 to 2/3 of the full scale. 6.9.3 Temperature | Semiconductor thermometer, etc. 6.9.3.2 The medium temperature is measured at the discharge end of the water heater, 4
6.9.4 speed
JB/T6442-92
6.9.4.1 differential application of a tachometer with a stopwatch. , photoelectric tachometer, digital tachometer or other instruments to measure 6.9.4.2 Pump speed can be measured by the following methods: a. Measure the cumulative number of reciprocations within a certain time interval, and then average it: b. Measure the speed of the motor, Then convert to pump speed. 6.9.4.3 When measuring the cumulative number of reciprocations, the measurement time interval should be the same as the flow measurement time interval. 6.10 Digital processing
6.10.1 The calculation of flow, pressure and speed should comply with the provisions of ZBJ71024, 6.10.2 Power
Under steam conditions, the water heater power is calculated according to the following formula ：D(ii) × 10-
A
3.6
Where: A-maximum heater thermal power, kW; D-heater evaporation capacity (heated flow rate) ,kg/h;i:-high temperature water thermal baking, J/kgt
i-water injection hot melting, J/kg.
6.11 Performance Curve Drawing
6.11.1 The performance curve of Feizui is shown in Figure 1. Pressure production.MPa
Figure 1
6.11.2 Comparison curve of the fee mouth violation test is shown in Figure 2, medical force P.MPa
Figure 2
Flow rate QL/min
Flow rate QL/min
The full performance curve of the cleaning machine is shown in Figure 3.
6.11.3
Medical Power.MP.
6.12
Test Report
6.12.1
8.||tt| |b.
c.
d
e
g
6. 12. 2
8
b .
6.12. 3
a.
b.
6. 12. 4
Type test report includes
pump and nozzle Test report;
JB/T6442-92
Figure 3
Flow rate QL/min
Cleaning machine performance test report (content includes 6.3, 6.5, 6.6, 6.8 strips); Continuous operation test report of cleaning machine:
Record table of all test items:
Calibration record data of test instruments and meters: Water softening test report;
Cleaning machine test in conclusion.
The content of the sample inspection report includes:
test report, cleaning machine performance test report (content includes 6.3.6.5, 6.6, and 6.8); conclusion of the cleaning machine test. bzxz.net
The factory inspection report includes:
test report (including 6.3.6.5); conclusion of the cleaning machine test.
The test report should be signed by the person in charge of the test. Inspection rules
7.1
Each cleaning machine must be inspected by the technical inspection department of the manufacturer and must be accompanied by a product certificate. Various inspections of factory cleaning machines are carried out according to the items specified in Table 5. 7.2
Table 5
Test items
Test traces of Heguizui
Safety test, pressure regulation test
Water softening test||tt ||High-pressure working condition gas working condition inspection
Full performance test
Continuous operation test
Noise measurement
Type
Inspection
Note: √ means that the test should be carried out: O means that the test needs to be carried out: X means that the test is not carried out, 7.3
6
type inspection regulations are as follows,
inspection
species
sampling
×
O||tt ||Class
?
V
x
v
Factory
7.3.1 The first prototype of the product should be subject to type inspection. JB/T6442-92
7.3.2 The basic prototype of the series of products should be subject to type inspection (other products are only subject to sampling inspection). The basic prototype should be the product with the largest load in the series, and its inspection results can be used for assessment Full range of products (except performance curves). 7.3.3 Converted products should undergo type inspection. 7.3.4 Yan products should undergo type inspection when there are major changes in design, process and materials. 7.4 The regulations for spot inspection are as follows:
7.4.1 A batch of blue-produced crystals shall be subject to sampling inspection, and the inspection plan shall be based on the one-time sampling plan specified in Table 6. The sampling time should be evenly distributed in 1a=.
Table 6
Batch Fan Country
:~5-
:s:
1:~155
7. 4. 2
sample size n
2
3
5
sub-sampling plan
pass judgment number A
o The basic prototype of the
I
series of products has undergone type inspection, and other products should undergo sampling inspection. 7.5 Each Qingde machine should undergo factory inspection, 8 mark. Packaging, survival
unqualified judgment number R.
2
8.1 The nameplate of the clearance should be fixed in an obvious position , the size and technical requirements of the nameplate should comply with the regulations of GB/T13306. The nameplate should include the following content:
a.
No. 1 factory name:
b.
c
Measurement washing machine model and name:
Technical parameters of measurement washing machine, rated discharge pressure.MPa: Maximum working medium quality Temperature: C: Equipped with motor power.kW: Thermal power, kW : Large amount of magnetic oil. kg/h:
d Factory No. 2:
e.
Factory Phase 3.
8.2 Tsingqi Auto shall indicate its registered trademark.
Qingqiji should be painted and rust-proofed before packaging, and the discharge outlet should be sealed. 8.3
The packaging of Qingqi Luan is in accordance with the regulations of GB/T13384 and adopts closed packaging. 8.4
The following documents should be brought with the Qingfa chaos and sealed in an impermeable bag. 8.5
a.
b.
c.
d.
Product motto:
Urgent order:||tt ||Third grade lumen book:
Designation drawing.
8.6 Qingqi should prevent rust and damage during storage. The oil seal guarantee period is 6 months from the date of shipment. If it expires, it should be inspected and the oil seal re-sealed.
Additional port information:
This standard shall be proposed and managed by the Hefei General Machinery Research Institute of the Ministry of Electronics Industry. This standard is drafted by the Hefei General Machinery and Quilt Research Institute of the Ministry of Machinery and Quilt Electronics Industry. The main drafters of this standard office are Xue Shengtan, Li Qiang, Wang Haichang and Wang Linxing.
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