JB/T 10386-2002 Electronic expansion valve for household and similar air conditioners
Some standard content:
ICS29.120
Machinery Industry Standard of the People's Republic of China
JB/T 10386—2002
Electronic expansion valve for household and similar air conditioner2002-12-27Promulgated
Implementation on 2003-04-01
Promulgated by the State Economic and Trade Commission of the People's Republic of ChinaForeword
Normative references
Terms and definitions
4 Models,
5 Requirements.
General requirements.
5.2 Performance requirements…
6 Test methods.
6.1 Environment and measuring equipment requirements..
6.2 Test methods
Inspection rules.
Inspection classification
Factory inspection.
Type inspection,
Packaging, transportation, storage,
Packaging mark.
Certification of conformity
Packaging and transportation
Storage.
Table 1 Operating pressure.
Table 2 Test pressure..
Table 3 Test pressure..
Table 4 Test pressure..
Table 5 Test pressure difference
Table 6 Valve port leakage,
Table 7 Factory inspection items and requirements
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Table 8 Type inspection sequence and sample grouping
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Center
JB/T 10386-—2002
JB/T10386—2002
This standard is formulated based on the basic principle of direct-acting electronic expansion valve and with reference to technical data from advanced countries. This standard is proposed by the China Machinery Industry Federation. This standard is under the jurisdiction of the National Technical Committee for Standardization of Household Automatic Controllers. Drafting units of this standard: Zhejiang Sanhua Group Co., Ltd., Jiangsu Changheng Group Co., Ltd., Foshan Hualu Refrigeration Devices Co., Ltd., Zhejiang Chunhui Group, and Guangzhou Electric Science Research Institute. The main drafters of this standard are Chen Yuzhong, Gao Jiguang, Li Shukang, Gu Qigang, Yang Changchun and Huang Kaiyun. II
↑Scope
Electronic expansion valve for household and similar air conditioners JB/T10386--2002
This standard specifies the terms and definitions, models, requirements, test methods, inspection rules and markings, packaging, transportation and storage of electronic expansion valves for household and similar air conditioners.
This standard applies to direct-acting electronic expansion valves (hereinafter referred to as valves) with a rated voltage not exceeding 36V, a valve diameter not exceeding 4mm and R22 as the refrigerant. Electronic expansion valves with R407C, R410A, etc. as refrigerants can refer to this standard for implementation. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version is applicable to this standard. GB/T191 Packaging, storage and transportation pictorial symbols
GB/T2423.1 Environmental testing for electric and electronic products Part 2: Test methods Test A: Low temperature GB/T2423.2 Environmental testing for electric and electronic products Part 2: Test methods Test B: High temperature GB/T2423.3 Basic environmental testing procedures for electric and electronic products Test Ca: Steady state damp heat test method GB/T2423.10 Environmental testing for electric and electronic products Part 2: Test methods Test Fc and guidelines: Vibration (sinusoidal) GB/T2423.22 Environmental testing for electric and electronic products Test N: Temperature change GB/T2828 Batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches) GB/T10125 Artificial atmosphere corrosion test Salt spray test 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
electronicexpansionvalve
Electronic expansion valve,
Uses a microcomputer to control the operation of a stepper motor, thereby changing the flow area of the valve port and realizing the actuator for regulating the refrigerant flow in the refrigeration system.
Maximum operating pressure difference maxoperatingpressuredifference The maximum pressure difference between the inlet and outlet of the valve to make the valve operate reliably. 3.3
Air tightness
The ability of the valve to prevent the refrigerant from leaking out of the refrigeration system when it is working. 3.4
airflowrate
Air flow rate
Under the specified test conditions, the valve is in the open state, and the volume of test air passing through the valve port per unit time. 3.5
valve leakage
Valve port leakage
JB/T10386—2002
Under the specified test conditions, the valve is in the closed state, and the volume of test air passing through the valve port per unit time. 4 Model
The model of the valve is stipulated as follows:
The serial number of the manufacturer's series products, expressed in Arabic numerals and Chinese pinyin letters: R22 is represented by "A", R407C is represented by "B", R410A is represented by "C", and other refrigerants are similarly represented. The nominal diameter of the valve is in mm
Code for electronic expansion valve
Example: Model DPE1.8A-2 means that the nominal diameter of the valve is 1.8mm, the refrigerant used is R22, and it is the second product in the manufacturer's series products. Requirements
General requirements
5.1.1 Applicable ambient temperature: 30℃～～+60℃ (power-on rate below 50%); 5.1.2 Applicable fluid temperature: -30℃～+70℃ (power-on rate below 50%); 5.1.3 Applicable ambient humidity: below 95%RH; 5.1.41
Using pressure: as specified in Table 1
Table 1 Using pressure
Unit: MPa
Refrigerant
Using pressure
5.1.5 Medium flow direction: both positive and negative. R22
5.1.6 Rated voltage: not more than DC 36V, preferably DC 12V, DC 24V, the waveform is rectangular square wave, and the pulse frequency is agreed upon by the supply and demand parties.
5.2 Performance requirements
5.2.1 Shape and size
Consistent with the drawings and technical documents approved in accordance with the prescribed procedures. 5.2.2 Appearance
There are no obvious defects such as scars, deformation, oxidation corrosion, burrs, etc. There are no chips, impurities and free moisture in the valve, the lead wires are intact, and the markings are correct and clear.
5.2.3 Air tightness
There should be no leakage under the test pressure specified in Table 2. Table 2 Test pressure
Unit: MPa
Refrigerant
Test pressure
5.2.4 Hydraulic strength
There should be no leakage and abnormal deformation under the test pressure specified in Table 3. 2
Refrigerant
Test pressure
5.2.5 Destructive strength
Table 3 Test pressure
Under the test pressure specified in Table 4, there should be no cracking or breakage. Table 4 Test pressure
Refrigerant
Test pressure
5.2.6 Air flow characteristics
The shape and value of the air flow characteristic curve shall be in accordance with the supplier's specification or the agreement between the supplier and the buyer. 5.2.7 Maximum operating pressure difference
JB/T 10386—2002
Unit: MPa
Unit: MPa
Under 90% of the rated voltage, the specified excitation mode, excitation speed and other conditions, the maximum operating pressure difference for the valve to operate reliably shall meet the requirements of Table 5.
Table 5 Test pressure difference
Unit: MPa
Refrigerant
Test pressure difference
5.2.8 Reverse valve opening pressure difference
Not less than 1.47MPa (except for products without closing function)5.2.9 Valve port leakage
Valve port leakage shall meet the requirements of Table 6 (except for products without closing function)Table 6 Valve port leakage
Valve port diameter mm
Leakage mL/min
5.2.10 Insulation resistance
The insulation resistance between the valve coil lead and the valve body shall not be less than 100M2.5.2.11 Electrical strength
≤1000
The valve coil lead wire and valve body can withstand the electrical strength test of AC 500V, 1min or AC 600V, 1s, without breakdown or flashover (the set leakage current value is 5mA).
5.2.12 Impulse voltage resistance
The valve can still meet the requirements of 5.2.10 and 5.2.11 after withstanding the impulse voltage test of 1/40us wave, peak voltage 5kV, and 5 consecutive times. 5.2.13 Noise
Noise is not more than 45dB (A).
5.2.14 Coil temperature rise
The coil temperature rise is not more than 60K.
5.2.15 High temperature resistance
After the valve is subjected to a high temperature test of 80℃ for 72h, it can still meet the requirements of 5.2.3, 5.2.6, 5.2.7, 5.2.9 and 5.2.10, 5.2.11. 3
JB/T 10386—2002
5.2.16 Low temperature resistance
After the valve is subjected to a low temperature test of -30℃ for 72h, it can still meet the requirements of 5.2.3, 5.2.6, 5.2.7, 5.2.9 and 5.2.10, 5.2.11. 5.2.17 Temperature change resistance
After the valve is subjected to a temperature change test of 30℃, 1h, 80℃, 1h for a total of five cycles, it can still meet the requirements of 5.2.3, 5.2.6, 5.2.7, 5.2.9, 5.2.10, 5.2.11 and 5.2.13. 5.2.18 Humidity and heat resistance
After the valve is subjected to a 48h humidity and heat test, it can still meet the requirements of 5.2.10 and 5.2.11. 5.2.19 Vibration resistance
After the valve is subjected to a vibration test, it can still meet the requirements of 5.2.3, 5.2.6, 5.2.7 and 5.2.8. 5.2.20 Corrosion resistance
After the valve is subjected to a corrosion test for 72 hours, it can still meet the requirements of 5.2.3, 5.2.10 and 5.2.11. 5.2.21 Lead wire tension
After the lead wire is subjected to a tension test, there should be no falling off phenomenon and it can meet the requirements of 5.2.10 and 5.2.11. 5.2.22 Life
After the valve is subjected to an opening and closing action test for 100,000 times, it can meet the requirements of 5.2.3, 5.2.6, 5.2.7, 5.2.9, 5.2.10, 5.2.11 and 5.2.13. 5.2.23 Closing stop durability
After the valve is subjected to a full closing action test for 30,000 times, it can meet the requirements of 5.2.3, 5.2.6, 5.2.7, 5.2.9 and 5.2.13. 6 Test methods
6.1 Requirements for environment and measuring equipment
6.1.1 Environmental conditions
Temperature: 15℃~～~30℃;
Air pressure: 86kPa～106kPa;
Humidity: not more than 85%RH.
6.1.2 Requirements for measuring equipment
The measuring equipment shall be within the valid period of use and be accompanied by a verification certificate. Its measurement accuracy level shall comply with the following provisions: The accuracy level of the temperature measuring instrument shall not be lower than Class 1.0; the accuracy level of the pressure measuring instrument shall not be lower than Class 1.5; the accuracy level of the flow measuring instrument shall not be lower than Class 4.0; the accuracy level of the voltage measuring instrument shall not be lower than Class 1.5; the accuracy level of the resistance measuring instrument (universal bridge) shall not be lower than Class 0.1; the accuracy level of the tension tester shall not be lower than Class 1.0; the accuracy of the sound level meter shall be ±0.5dB.
6.2 Test method
6.2.1 Shape and size inspection
Use general and special measuring tools to inspect, and it shall meet the requirements of 5.2.1. 6.2.2 Appearance inspection
Use visual inspection to inspect, and it shall meet the requirements of 5.2.2. 6.2.3 Air tightness test
Connect according to Figure 1, remove the valve coil, pressurize the two interface ends with compressed air to the pressure specified in Table 2, immerse in water for 1 minute, and it shall meet the requirements of 5.2.3
Air source: 2-
6.2.4 Hydraulic strength test
-Stop valve; 3-
Pressure reducing valve: 4-Pressure gauge; 5-Solenoid valve: 6-Figure
JB/T 10386-2002
Tested valve; 7-
Solenoid valve.
Connect as shown in Figure 2, remove the valve coil, fill the valve with water at room temperature, completely exhaust the air, pressurize to the pressure specified in Table 3, maintain the pressure for 3 minutes, and it should meet the requirements of 5.2.4.
Hydraulic pump: 2-
Pressure gauge; 3-
6.2.5 Destructive strength test
Tested valve.
Connect as shown in Figure 2, remove the valve coil, fill the valve with water at room temperature, completely exhaust the air, pressurize to the pressure specified in Table 4, maintain the pressure for 1 minute, and it should meet the requirements of 5.2.5.
6.2.6 Air flow characteristic test
Connect as shown in Figure 3, after locating the origin of the valve, apply a gas pressure of 0.1MPa to the valve body according to the inlet specified in the drawing, and then measure the air flow at the specified number of pulses at the outlet, which should meet the requirements of 5.2.6. Gas source: 2—
—stop valve; 3—
6.2.7 Maximum action pressure difference test
pressure reducing valve: 4
—pressure gauge; 5, 6—
—solenoid valve: 7—
tested valve; 8—
—flow meter.
6.2.7.1 Connect as shown in Figure 4, driving conditions: test at 90% of rated voltage, specified excitation mode and excitation speed. 5
JB/T 10386—2002
gas source; 2—
stop valve; 3, 6 pressure reducing valve; 7—
—air storage cylinder: 4, 8—
10——check valve; 11—
tested valve.
-Pressure gauge; 5, 9 solenoid valve;
6.2.7.2Under the non-pressurized state, open the valve for 250 pulses, then add air pressure of 0.1MPa at the inlet end (pressure acts on the valve closing direction), pass atmospheric pressure at the outlet end, and measure the air flow. 6.2.7.3Close the valve completely, add the maximum action pressure difference specified in Table 5, open the valve for 250 pulses (regardless of the change in valve opening, as long as the inlet pressure is maintained constant), and after the pressure is released, add 0.1MPa pressure at the inlet end (pressure acts on the valve closing direction), pass atmospheric pressure at the outlet end, and measure the air flow.
6.2.7.4Compare the air flow measured in 6.2.7.2 and 6.2.7.3, and the change is not greater than 5%. 6.2.8Reverse valve opening pressure difference
Connect according to Figure 5, close the valve completely, and slowly add air pressure at the outlet end; measure the pressure when the valve is opened, which should meet the requirements of 5.2.8. X
Gas source: 2-
Stop valve: 3
6.2.9 Valve port leakage test
Pressure reducing valve; 4
Pressure gauge; 5, 6
Solenoid valve: 7
Valve to be tested; 8-
A flow meter
Connect as shown in Figure 1, fully close the valve, then add air pressure of 1.0MPa at the valve inlet (pressure acts on the valve closing direction), and let the outlet be open to the atmosphere. Measure the air leakage at the outlet, which should meet the requirements of 5.2.9. 6.2.10 Insulation resistance test
Use a DC 500V megohmmeter to measure the insulation resistance between the lead wire and the valve body, which should meet the requirements of 5.2.10. 6.2.11 Electric strength test
Add AC 500V, 1min or AC 600V, 1s between the lead wire and the valve body, which should meet the requirements of 5.2.11. 6.2.12 Impulse voltage resistance test
After applying 1/40us wave and 5kV peak voltage between the lead wire and the valve body for 5 consecutive impacts, it shall meet the requirements of 5.2.12. 6.2.13 Noise test
Hang the valve in the air, perform cyclic opening and closing actions at rated voltage, specified excitation mode, excitation speed and pulse number within the control range, and measure the noise at 6 points above, below, left, right, front and back 300mm away from the motor surface. It shall meet the requirements of 5.2.13. 6.2.14 Coil temperature rise test
Put the valve in a constant temperature box at 40℃±2℃ and connect the measuring and control circuits. After 2h of temperature equilibrium, measure and record the initial resistance value of the coil; then connect the valve to 110% of the rated voltage, and continuously open and close the valve within the valve opening range of the specified excitation mode, excitation speed, and pulse number specified in the diagram for 2h. Then measure the resistance value of the coil and measure the temperature rise of the coil by the resistance method. Calculate it according to the following formula: At=(R2=R)(234.5+t)+ -t2
Wherein:
Coil temperature rise value, unit is K;
-Ambient temperature at the beginning of the test, unit is ℃; t, the ambient temperature at the end of the test, unit is ℃; R, coil resistance value at temperature t, unit is QR, coil resistance value at temperature t, unit is 2. The coil temperature rise shall meet the requirements of 5.2.14. 6.2.15 High temperature resistance test
Under the condition of no power supply, the valve shall be subjected to a high temperature test of 80℃ and 72h in accordance with the provisions of GB/T2423.2. After being taken out and restored to room temperature for 2h, it shall meet the requirements of 5.2.15. 6.2.16 Low temperature resistance test
Under the condition of no power supply, the valve shall be subjected to a low temperature test of -30℃ and 72h in accordance with the provisions of GB/T2423.1. After being taken out and restored to room temperature for 2h, it shall meet the requirements of 5.2.16. 6.2.17 Temperature change resistance test
Under the condition of no electricity, the valve shall be subjected to the temperature change test for 5 cycles according to the provisions of GB/T2423.22, with 30℃, 1h, 80℃, 1h as one cycle. After taking it out and restoring it at room temperature for 2h, it shall meet the requirements of 5.2.17. 6.2.18 Humidity and heat resistance test
Under the condition of no electricity, the valve shall be subjected to the humidity and heat test for 48h according to the provisions of GB/T2423.3. It shall meet the requirements of 5.2.18. 6.2.19 Vibration resistance test
Open the valve to the specified pulse, vibrate the valve in the X, Y and Z directions for 2h with a full amplitude of 2mm at 33Hz according to the provisions of GB/T2423.10, and it shall meet the requirements of 5.2.19. 6.2.20 Corrosion resistance test
After the valve is subjected to a 72h neutral salt spray test according to GB/T10125, it shall meet the requirements of 5.2.20. 6.2.21 Lead wire tensile test
Fix the sample and subject each lead wire to a tensile test of 13.7N and 15s in the X, Y and Z directions. It shall meet the requirements of 5.2.21. 6.2.22 Life test
Connect as shown in Figure 6. Within the valve opening range of the rated voltage and the excitation mode, excitation speed and specified pulse number specified in the drawing, add 1.0MPa air pressure (pressure acts on the valve closing direction) to the inlet end, and atmospheric pressure to the outlet end. At the same time, add refrigeration oil to the inlet end at a frequency of 5mgx6 times/min, and then perform repeated opening and closing actions with the specified pulse number. After 100,000 times, it shall meet the requirements of 5.2.22. —gas source; 2——stop valve; 3——pressure reducing valve; 4——air reservoir; 5——oiler: 6——pressure gauge: 7——solenoid valve: 8——tested valve. Figure 6
JB/T 10386--2002
6.2.23 Closing stop endurance test
Under 110% of the rated voltage, the specified excitation mode and excitation speed, without pressure, open the valve from the closed state with the specified pulse, and then perform the valve closing action with 100 pulses more than the valve opening pulse. After repeating 30,000 times, it should meet the requirements of 5.2.23. Inspection rules
Inspection classification
Inspection is divided into factory inspection and type inspection. 7.2 Factory Inspection
Product factory inspection is to select samples from the same batch of products that have passed the test on the production line according to the normal inspection sampling plan of GB/T2828. Samples can only be shipped after passing the inspection. The inspection items and requirements are as specified in Table 7. Table 7
Factory inspection items and requirements
Air tightness
Air flow
Maximum operating pressure
Valve port leakage
Insulation resistance
Electrical strength
Type inspection
Type inspection is carried out in the following cases:
Test method
Inspection level
Qualified quality level
Importance classification
a) When there are major changes in the design, process, materials, etc. of the product, which may affect the performance; but the test items can sometimes be omitted according to the degree of change;
b) When the product has been in continuous production for one year;
When a new product is put into production;
d) When the production is stopped for more than half a year and then put into production again;
When the user or the superior quality supervision department has requirements. e
The items of type inspection are all the items in 6.2. The type inspection sequence and sample grouping shall be in accordance with Table 8. Table 8 Type inspection sequence and sample grouping
Inspection items
Shape and size
Air tightness
Hydraulic strength
Destructive strength
Air flow
01～02
3，12
4，13
03～04
1，10
2，11
Sample grouping and test sequence
1，9，16
2，10，17
09～10
11 ～12
13～14
Inspection items
Maximum action pressure difference
Reverse valve opening pressure difference
Valve port leakage
Insulation resistance
Electrical strength
Withstand impulse voltage
Coil temperature rise
High temperature resistance
Low temperature resistance
Temperature change resistance
Vibration resistance
Corrosion resistance
Lead wire tension
22Life
23Close brake durability
01～0 2
5, 14
7, 15
10, 16
03～04
3, 12
4, 13
5, 14
6, 15
Table 8 (continued)
Sample grouping and test sequence
05～06||tt ||3, 11, 18
4, 12, 19
5, 13, 20
6, 14, 21
7, 22
07～08| |tt||2，5,9
3，6，10
4，11
5，13
6，14
JB/T103862002
11~～12
13～14
4，10
5，11
7.3.4 Judgment standard: When there are unqualified items in the type inspection, the unqualified items shall be double sampled for re-inspection. If they are still unqualified, the type inspection shall be considered unqualified. The reasons shall be found out and measures shall be taken before re-conducting the type test. 8 Marking
8.1 The product marking shall be clearly visible and durable. 8.2 The marking content shall include the product model, the name or trademark of the manufacturer, the year and month of production or its code, and the type of refrigerant. 9 Packaging, transportation, compensation and storage
9.1 Packaging mark
The product packaging box should have the product name, model, manufacturer name and address, product batch number or production date or its code, weight (gross weight), quantity and "fragile items", "upward", "rainproof" and other marks. The marks should comply with the relevant provisions of GB/T191. 9.2 Certificate of conformity
The product should have a certificate of conformity.
Packaging and transportation
The packaging and transportation of the product should have reliable dust-proof, moisture-proof and vibration-proof measures to ensure that it will not loosen or be damaged during normal transportation. 9.4 Storage
The product should be stored in a well-ventilated environment without corrosive gases. 919 Vibration resistance test
Open the valve to the specified pulse, vibrate the valve in the X, Y, and Z directions for 2 hours at 33Hz and full amplitude of 2mm according to GB/T2423.10 using a vibration tester, and it should meet the requirements of 5.2.19. 6.2.20 Corrosion resistance test
After the valve is subjected to a 72h neutral salt spray test according to GB/T10125, it should meet the requirements of 5.2.20. 6.2.21 Lead wire tension test
Fix the sample, and after each lead wire is subjected to a tension test of 13.7N and 15s in the X, Y, and Z directions, it should meet the requirements of 5.2.21. 6.2.22 Life test
Connect as shown in Figure 6, within the range of rated voltage and excitation mode, excitation speed and valve opening of specified pulse number, add 1.0MPa air pressure at the inlet (pressure acts on the valve closing direction), let atmospheric pressure pass through the outlet, and add refrigeration oil at the inlet at a frequency of 5mgx6 times/min, and then repeat the opening and closing action with specified pulse number, after 100,000 times, it should meet the requirements of 5.2.22. —Air source; 2—Stop valve; 3—Pressure reducing valve; 4—Air reservoir; 5—Oiler: 6—Pressure gauge: 7—Solenoid valve: 8—Valve under test. Figure 6
JB/T 10386--2002
6.2.23 Closing stop endurance test
Under 110% of the rated voltage, the specified excitation mode and excitation speed, without pressure, the sample is opened from the closed state with the specified pulse, and then the valve closing action is performed with 100 pulses more than the valve opening pulse. After repeating for 30,000 times, it should meet the requirements of 5.2.23. Inspection rules
Inspection classification
Inspection is divided into factory inspection and type inspection. 7.2 Factory inspection
Product factory inspection is to take samples from the same batch of products that have passed the test on the production line according to the normal inspection sampling plan of GB/T2828. They can only be shipped after passing the inspection. The inspection items and requirements are specified in Table 7. Table 7
Factory inspection items and requirements
Air tightness
Air flow
Maximum operating pressure
Valve port leakage
Insulation resistance
Electrical strength
Type inspection
Type inspection is carried out in the following cases:
Test method
Inspection level
Qualified quality level
Importance classification
a) When there are major changes in the design, process, materials, etc. of the product, which may affect the performance; but the test items can sometimes be omitted according to the degree of change;
b) When the product has been in continuous production for one year;
When a new product is put into production;
d) When the production is stopped for more than half a year and then put into production again;
When the user or the superior quality supervision department has requirements. e
The items of type inspection are all the items in 6.2. The type inspection sequence and sample grouping shall be in accordance with Table 8. Table 8 Type inspection sequence and sample grouping
Inspection items
Shape and size
Air tightness
Hydraulic strength
Destructive strength
Air flow
01～02
3，12
4，13
03～04
1，10
2，11
Sample grouping and test sequence
1，9，16
2，10，17
09～10
11 ～12
13～14
Inspection items
Maximum action pressure difference
Reverse valve opening pressure difference
Valve port leakage
Insulation resistance
Electrical strength
Withstand impulse voltage
Coil temperature rise
High temperature resistance
Low temperature resistance
Temperature change resistance
Vibration resistance
Corrosion resistance
Lead wire tension
22Life
23Close brake durability
01～0 2
5, 14
7, 15
10, 16
03～04
3, 12
4, 13
5, 14
6, 15
Table 8 (continued)||t t||Sample grouping and test sequence
05～06
3, 11, 18
4, 12, 19
5, 13, 20
6, 14, 21
7, 22
07～08| |tt||2，5,9
3，6，10
4，11
5，13
6，14
JB/T103862002
11~～12
13～14
4，10
5，11
7.3.4 Judgment standard: When there are unqualified items in the type inspection, the unqualified items shall be double sampled for re-inspection. If they are still unqualified, the type inspection shall be considered unqualified. The reasons shall be found out and measures shall be taken before re-conducting the type test. 8 Marking
8.1 The product marking shall be clearly visible and durable. 8.2 The marking content shall include the product model, the name or trademark of the manufacturer, the year and month of production or its code, and the type of refrigerant. 9 Packaging, transportation, compensation and storage
9.1 Packaging mark
The product packaging box should have the product name, model, manufacturer name and address, product batch number or production date or its code, weight (gross weight), quantity and "fragile items", "upward", "rainproof" and other marks. The marks should comply with the relevant provisions of GB/T191. 9.2 Certificate of conformity
The product should have a certificate of conformity.
Packaging and transportation
The packaging and transportation of the product should have reliable dust-proof, moisture-proof and vibration-proof measures to ensure that it will not loosen or be damaged during normal transportation. 9.4 Storage
The product should be stored in a well-ventilated environment without corrosive gases. 919 Vibration resistance test
Open the valve to the specified pulse, vibrate the valve in the X, Y, and Z directions for 2 hours at 33Hz and full amplitude of 2mm according to GB/T2423.10 using a vibration tester, and it should meet the requirements of 5.2.19. 6.2.20 Corrosion resistance test
After the valve is subjected to a 72h neutral salt spray test according to GB/T10125, it should meet the requirements of 5.2.20. 6.2.21 Lead wire tension test
Fix the sample, and after each lead wire is subjected to a tension test of 13.7N and 15s in the X, Y, and Z directions, it should meet the requirements of 5.2.21. 6.2.22 Life test
Connect as shown in Figure 6, within the range of rated voltage and excitation mode, excitation speed and valve opening of specified pulse number, add 1.0MPa air pressure at the inlet (pressure acts on the valve closing direction), let atmospheric pressure pass through the outlet, and add refrigeration oil at the inlet at a frequency of 5mgx6 times/min, and then repeat the opening and closing action with specified pulse number, after 100,000 times, it should meet the requirements of 5.2.22. —Air source; 2—Stop valve; 3—Pressure reducing valve; 4—Air reservoir; 5—Oiler: 6—Pressure gauge: 7—Solenoid valve: 8—Valve under test. Figure 6
JB/T 10386--2002
6.2.23 Closing stop endurance test
Under 110% of the rated voltage, the specified excitation mode and excitation speed, without pressure, the sample is opened from the closed state with the specified pulse, and then the valve closing action is performed with 100 pulses more than the valve opening pulse. After repeating for 30,000 times, it should meet the requirements of 5.2.23. Inspection rules
Inspection classification
Inspection is divided into factory inspection and type inspection. 7.2 Factory inspection
Product factory inspection is to take samples from the same batch of products that have passed the test on the production line according to the normal inspection sampling plan of GB/T2828. They can only be shipped after passing the inspection. The inspection items and requirements are specified in Table 7. Table 7
Factory inspection items and requirements
Air tightness
Air flow
Maximum operating pressure
Valve port leakage
Insulation resistance
Electrical strength
Type inspection
Type inspection is carried out in the following cases:
Test method
Inspection level
Qualified quality level
Importance classification
a) When there are major changes in the design, process, materials, etc. of the product, which may affect the performance; but the test items can sometimes be omitted according to the degree of change;
b) When the product has been in continuous production for one year;
When a new product is put into production;
d) When the production is stopped for more than half a year and then put into production again;
When the user or the superior quality supervision department has requirements. e
The items of type inspection are all the items in 6.2. The type inspection sequence and sample grouping shall be in accordance with Table 8. Table 8 Type inspection sequence and sample grouping
Inspection items
Shape and size
Air tightness
Hydraulic strength
Destructive strength
Air flow
01～02
3，12
4，13
03～04
1，10
2，11
Sample grouping and test sequence
1，9，16
2，10，17
09～10
11 ～12
13～14
Inspection items
Maximum action pressure difference
Reverse valve opening pressure difference
Valve port leakage
Insulation resistance
Electrical strength
Withstand impulse voltage
Coil temperature rise
High temperature resistance
Low temperature resistance
Temperature change resistance
Vibration resistance
Corrosion resistance
Lead wire tension
22Life
23Close brake durability
01～0 2
5, 14
7, 15
10, 16
03～04
3, 12
4, 13bZxz.net
5, 14
6, 15
Table 8 (continued)
Sample grouping and test sequence
05～06||tt ||3, 11, 18
4, 12, 19
5, 13, 20
6, 14, 21
7, 22
07～08| |tt||2，5,9
3，6，10
4，11
5，13
6，14
JB/T103862002
11~～12
13～14
4，10
5，11
7.3.4 Judgment standard: When there are unqualified items in the type inspection, the unqualified items shall be double sampled for re-inspection. If they are still unqualified, the type inspection shall be considered unqualified. The reasons shall be found out and measures shall be taken before re-conducting the type test. 8 Marking
8.1 The product marking shall be clearly visible and durable. 8.2 The marking content shall include the product model, the name or trademark of the manufacturer, the year and month of production or its code, and the type of refrigerant. 9 Packaging, transportation, compensation and storage
9.1 Packaging mark
The product packaging box should have the product name, model, manufacturer name and address, product batch number or production date or its code, weight (gross weight), quantity and "fragile items", "upward", "rainproof" and other marks. The marks should comply with the relevant provisions of GB/T191. 9.2 Certificate of conformity
The product should have a certificate of conformity.
Packaging and transportation
The packaging and transportation of the product should have reliable dust-proof, moisture-proof and vibration-proof measures to ensure that it will not loosen or be damaged during normal transportation. 9.4 Storage
The product should be stored in a well-ventilated environment without corrosive gases. 92 Factory Inspection
Product factory inspection is to take samples from the same batch of products that have passed the test on the production line according to the normal inspection sampling plan of GB/T2828. Samples can only be shipped after passing the inspection. The inspection items and requirements are as specified in Table 7. Table 7
Factory inspection items and requirements
Air tightness
Air flow
Maximum operating pressure
Valve port leakage
Insulation resistance
Electrical strength
Type inspection
Type inspection is carried out in the following cases:
Test method
Inspection level
Qualified quality level
Importance classification
a) When there are major changes in the design, process, materials, etc. of the product, which may affect the performance; but the test items can sometimes be omitted according to the degree of change;
b) When the product has been in continuous production for one year;
When a new product is put into production;
d) When the production is stopped for more than half a year and then put into production again;
When the user or the superior quality supervision department has requirements. e
The items of type inspection are all the items in 6.2. The type inspection sequence and sample grouping shall be in accordance with Table 8. Table 8 Type inspection sequence and sample grouping
Inspection items
Shape and size
Air tightness
Hydraulic strength
Destructive strength
Air flow
01～02
3，12
4，13
03～04
1，10
2，11
Sample grouping and test sequence
1，9，16
2，10，17
09～10
11 ～12
13～14
Inspection items
Maximum action pressure difference
Reverse valve opening pressure difference
Valve port leakage
Insulation resistance
Electrical strength
Withstand impulse voltage
Coil temperature rise
High temperature resistance
Low temperature resistance
Temperature change resistance
Vibration resistance
Corrosion resistance
Lead wire tension
22Life
23Close brake durability
01～0 2
5, 14
7, 15
10, 16
03～04
3, 12
4, 13
5, 14
6, 15
Table 8 (continued)
Sample grouping and test sequence
05～06||tt ||3, 11, 18
4, 12, 19
5, 13, 20
6, 14, 21
7, 22
07～08| |tt||2，5,9
3，6，10
4，11
5，13
6，14
JB/T103862002
11~～12
13～14
4，10
5，11
7.3.4 Judgment standard: When there are unqualified items in the type inspection, the unqualified items shall be double sampled for re-inspection. If they are still unqualified, the type inspection shall be considered unqualified. The reasons shall be found out and measures shall be taken before re-conducting the type test. 8 Marking
8.1 The product marking shall be clearly visible and durable. 8.2 The marking content shall include the product model, the name or trademark of the manufacturer, the year and month of production or its code, and the type of refrigerant. 9 Packaging, transportation, compensation and storage
9.1 Packaging mark
The product packaging box should have the product name, model, manufacturer name and address, product batch number or production date or its code, weight (gross weight), quantity and "fragile items", "upward", "rainproof" and other marks. The marks should comply with the relevant provisions of GB/T191. 9.2 Certificate of conformity
The product should have a certificate of conformity.
Packaging and transportation
The packaging and transportation of the product should have reliable dust-proof, moisture-proof and vibration-proof measures to ensure that it will not loosen or be damaged during normal transportation. 9.4 Storage
The product should be stored in a well-ventilated environment without corrosive gases. 92 Factory Inspection
Product factory inspection is to take samples from the same batch of products that have passed the test on the production line according to the normal inspection sampling plan of GB/T2828. Samples can only be shipped after passing the inspection. The inspection items and requirements are as specified in Table 7. Table 7
Factory inspection items and requirements
Air tightness
Air flow
Maximum operating pressure
Valve port leakage
Insulation resistance
Electrical strength
Type inspection
Type inspection is carried out in the following cases:
Test method
Inspection level
Qualified quality level
Importance classification
a) When there are major changes in the design, process, materials, etc. of the product, which may affect the performance; but the test items can sometimes be omitted according to the degree of change;
b) When the product has been in continuous production for one year;
When a new product is put into production;
d) When the production is stopped for more than half a year and then put into production again;
When the user or the superior quality supervision department has requirements. e
The items of type inspection are all the items in 6.2. The type inspection sequence and sample grouping shall be in accordance with Table 8. Table 8 Type inspection sequence and sample grouping
Inspection items
Shape and size
Air tightness
Hydraulic strength
Destructive strength
Air flow
01～02
3，12
4，13
03～04
1，10
2，11
Sample grouping and test sequence
1，9，16
2，10，17
09～10
11 ～12
13～14
Inspection items
Maximum action pressure difference
Reverse valve opening pressure difference
Valve port leakage
Insulation resistance
Electrical strength
Withstand impulse voltage
Coil temperature rise
High temperature resistance
Low temperature resistance
Temperature change resistance
Vibration resistance
Corrosion resistance
Lead wire tension
22Life
23Close brake durability
01～0 2
5, 14
7, 15
10, 16
03～04
3, 12
4, 13
5, 14
6, 15
Table 8 (continued)||t t||Sample grouping and test sequence
05～06
3, 11, 18
4, 12, 19
5, 13, 20
6, 14, 21
7, 22
07～08| |tt||2，5,9
3，6，10
4，11
5，13
6，14
JB/T103862002
11~～12
13～14
4，10
5，11
7.3.4 Judgment standard: When there are unqualified items in the type inspection, the unqualified items shall be double sampled for re-inspection. If they are still unqualified, the type inspection shall be considered unqualified. The reasons shall be found out and measures shall be taken before re-conducting the type test. 8 Marking
8.1 The product marking shall be clearly visible and durable. 8.2 The marking content shall include the product model, the name or trademark of the manufacturer, the year and month of production or its code, and the type of refrigerant. 9 Packaging, transportation, compensation and storage
9.1 Packaging mark
The product packaging box should have the product name, model, manufacturer name and address, product batch number or production date or its code, weight (gross weight), quantity and "fragile items", "upward", "rainproof" and other marks. The marks should comply with the relevant provisions of GB/T191. 9.2 Certificate of conformity
The product should have a certificate of conformity.
Packaging and transportation
The packaging and transportation of the product should have reliable dust-proof, moisture-proof and vibration-proof measures to ensure that it will not loosen or be damaged during normal transportation. 9.4 Storage
The product should be stored in a well-ventilated environment without corrosive gases. 9
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