Some standard content:
JB/T8528-1997
This standard is a revision of ZBJ16002-87 "Technical Conditions for Valve Electric Devices". This standard is for the working environment temperature, noise index, starting torque, maximum torque, control torque and its test force method. This standard will replace ZB3J16002-87 from the date of entry into force. This standard was proposed by the National Valve Standardization Technical Committee and drafted by: Dajin No. 2 General Machinery Factory and Hefei General Machinery Research Institute. The main drafters of this standard are: Kou Guoqing, Zhang Huayou, Liu Qijing, Min Zhongming, Cheng Rujing, Zhao Guangyuan 1 Scope
Machinery Industry Standard of the People's Republic of China
Technical Conditions for Ordinary Valve Electric Devices
JB/T85281997
Original ZBJ1609287
This standard specifies the definition, technical requirements, test methods, inspection rules, marking, packaging and storage of ordinary valve electric devices. This standard is applicable to ordinary valve electric devices (hereinafter referred to as electric devices) for valves such as motor-driven, electric contact-controlled, single-speed gate valves, stop valves, throttle valves, diaphragm valves, ball valves and butterfly valves. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard is published, the versions shown are all valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB3181-82 Standard sample of paint film color
GB379789 Electric control equipment Part 2: Electric control equipment equipped with electric devicesGB1222289 Connection of multi-rotation valve drive deviceG131222389 Connection of partly rotating valve drive deviceJB2195-77YIF series electric valve with 3-phase asynchronous motorJB/Z247-85 Valve electric device life test procedure3 Definitions
This standard adopts the following definitions.
3.1 Nominal torque
Design given value. The maximum torque allowed to be borne by the electric device. 3.2 Nominal thrust
Design given value. The maximum axial force allowed to be borne by the output shaft of the electric device in the axial direction. 3.3 Starting torque
The torque value output by the electric device when the hammer effect and motion clearance are not included and the output shaft is locked. 3.4 Maximum torque
The maximum torque value output by the electric device, excluding hammer effect and motion clearance. 3.5 Control torque
The torque range value that the torque control mechanism can adjust in both the opening and closing directions. The control torque is divided into the maximum control torque and the minimum control torque.
3.6 Nameplate torque
The torque value required by the user.
3.7 Output speed
Design given value. The rotation speed of the output shaft of the electric device. Approved by the Ministry of Machinery Industry of the People's Republic of China on April 15, 1997, 518
1998-0101 implementation
4 Technical requirements
JB/T8528
4.1 The electric device should be able to operate normally under the following conditions: a) The altitude is not higher than 1000 m;
b) Working environment temperature -2040C:-2060 (; c) Working environment humidity is not more than 90% (25 (hours) d) Short-time working system, the time quota is 10.15.30mi4.2 The electric device is composed of the following components:
a) Special motor,
b) Reduction mechanism;
c) Short-turn control mechanism;
d) Stroke control mechanism;
e) Position indication mechanism:
f) Manual and electric switching mechanism;
g) Manual operation mechanism:
h) Controller (provided according to the contract).
4.3 The connection type and size of the electric device and the valve shall comply with the provisions of GB12222 and GB12223. 4.4 The motor used in the electric device shall comply with the provisions of J132195 or relevant special motor standards. Before the electric device is put out, the inside of the box shall be clean and free of debris, and lubricating oil or grease shall be injected according to the requirements. 4.5
The outer surface of the electric device shall be flat and smooth. There shall be no defects such as cracks, burrs and sulfur bumps that affect the appearance quality. The paint layer on the outer surface of the electric device shall be firmly attached, flat, smooth, and uniform in color, without oil stains, indentations and other mechanical damage. The paint color is generally the silver gray code B04 specified in GB3181. 4.8
There should be a grounding bolt and a mark "" on the main box of the electric device. The specifications of the grounding bolt should not be less than the requirements of Table 1. Table 1
Electric power
>0. 25 ~ 5Www.bzxZ.net
4.9The direction of rotation of the handwheel (handle) of the electric device (looking at the handwheel) and the direction of rotation of the output shaft (looking along the axis of the output shaft) are clockwise for closing and counterclockwise for opening. And the handwheel (handle) 1 should have a direction indication. 4.10The electrical wiring of the electric device shall comply with the requirements of the wiring diagram: the wire shall not be cracked and the insulation layer shall not be damaged. 4.11The electrical clearance and creepage distance between the exposed live circuits of the electric device, and between the live parts and the conductive parts or grounded parts shall comply with the requirements of Table 2.
Rated insulation voltage
>60～230
-230380
4.12 The color of the indicator light of the electric device is specified as follows: a) White for power supply;
b) Red for the process of opening or fully opening;
c) Green for the process of closing or fully closing;
d) Yellow for over torque.
JB/T8528--1997
4.13 The materials of the main parts of the electric device should have a factory certificate, chemical composition and mechanical performance inspection report. 4.14 The main purchased parts of the electric device have a certificate of conformity. 4.15 When the electric device is working, the deviation between the indication of the position indicating mechanism, controller or opening gauge in the control room and the actual position of the output shaft of the electric device should be within the range of =5%.
4.16 The noise of the electric device under no-load should be small. The sound pressure level is 75dB(A). 4.17 The insulation resistance between all current-carrying parts and the shell of the electric device should be not less than 1MQ. The electric device should be able to withstand the dielectric test of 50Hz frequency and the test voltage of the string-stopped AC specified in Table 3 for 1min. During the test, there should be no insulation breakdown, surface flashover, obvious increase in leakage current or sudden drop in voltage. Table 3
Rated insulation voltage ((AC effective value or DC) V
>60~250
≥250~300)
20,11000
The manual and electric switching mechanism should be sensitive and reliable: the hand wheel should not rotate when the electric is running (except for friction). 4.19
4.20 The starting torque and maximum torque of the electric device shall comply with the provisions of Table 4. Table 4
Nameplate torque
Multi-turn electric device
Part-turn electric device
5 000)
Starting torque or maximum torque/nameplate torque
1.3~~1. 8
1. 3~-1. 6
4.21 The maximum control torque should be greater than the nameplate torque, and the minimum control torque should comply with the provisions of Table 5. When the electric device leaves the factory, its actual output torque should be set at (1.0~1.3) times the nameplate torque. Table 5
Multi-rotation electric device nameplate
Minimum control torque/nominal torque
0, 5
4.22 The torque control mechanism should be sensitive and reliable, and should have a scale indication for adjusting the output converter size. The repetitive deviation of the controlled output torque should comply with the provisions of Table 6
Electric device type
Multi-rotation
Partial rotation
JB/T8528—1997
Repetitive deviation of controlled torque
4.23 The stroke control mechanism should be sensitive and reliable, and the repetitive deviation of the controlled output shaft position should comply with the provisions of Table 7 and should have adjustment signs of "on" and "off".
Type of electric device
Multi-rotation
Partial rotation
Position repetitive polarization
4.24 When the electric device is subjected to the load specified in Table 8 instantaneously, all load-bearing parts should not be damaged. Table 8
Nominal torque
4.25 The electric device should be able to withstand a life test of 8000 continuous operations. 5 Test method
5.1 Test power supply
All are 50Hz.380V without special requirements:
5.2 Inspection of surface, painting, grounding bolts and electrical wiring. The visual inspection should comply with the provisions of 4.6, 4.7, 4.8, 4.10 and 4.11. 5.3 Inspection of the rotation direction of the handwheel (handle) and the rotation direction of the output shaft Strength requirements
2 times the nominal torque or nominal load
1.8 times the nominal torque or nominal thrust
Switch the manual and electric switching mechanism to the manual operation position, turn the handwheel clockwise and counterclockwise respectively, and check that the rotation direction of the output shaft of the electric device should comply with the provisions of 4.9.
5.4 Check the color of the indicator light
Start the electric device without load to simulate the opening and closing operation and the action of the torque mechanism, and check that the color of the indicator light should comply with the provisions of 4.12.5.5 Check the position indication mechanism
Install the electric device on the test bench. Adjust the pointer of the position indication mechanism to zero (equivalent to the fully closed position of the valve), start the electric device without load, and when the specified number of revolutions (equivalent to the fully open position of the valve) is reached, the difference between the actual indication scale of the measuring pointer and the full scale should comply with the provisions of 4.15, and the number of tests should be no less than three times. 5.6 Noise inspection
Noise inspection shall be carried out according to the test method specified in G133797, and the results shall comply with the provisions of 4.16. 5.7 Insulation resistance and dielectric tests shall be carried out according to the test method specified in GB3797, and the results shall comply with the provisions of 4.17 and 4.18. 5.8 Manual and electric switching inspection
5.8.1 No-load switching inspection. Switch the manual and electric switching mechanism from electric to manual state, turn the hand wheel to make the output shaft rotate in the forward and reverse directions for at least 1 turn, switch from manual state to electric state, start the electric device to make the output shaft rotate in the forward and reverse directions for at least 1 turn. Repeat the cycle once, and it shall comply with the provisions of 4.19.
5.8.2 Load switching inspection Install the electric device on the test bench, adjust the opening and closing direction control torque to (1.0521
3-1997
JB/T 8528
1.1) times of the nameplate torque, start the electric device and gradually load until the torque control mechanism is activated. Do not unload the load after stopping, and repeat 3.8.! Test. Make it meet the requirements of 4.19.
5.9 Starting torque test
Install the electric device on the test bench, eliminate the idle stroke, make the torque control mechanism inoperative, lock the output shaft of the electric device, start the electric device, and the output torque value at this time should meet the requirements of 4.20. 5.10 Maximum torque test
Install the electric device on the test bench, eliminate the idle stroke, make the torque control mechanism inoperative, start the electric device, and gradually load until the motor stops rotating. The maximum torque value output during this process shall comply with the provisions of 4.20. 5.11 Control torque test
Install the electric device on the test bench.
5.11.1 Maximum control torque test. Adjust the control torque in the opening and closing directions to the maximum control torque state, start the electric device and gradually load until the torque control mechanism is activated. Measure three times in each direction of opening and closing to determine its maximum control torque value. 5.11.2 Nameplate torque test. Adjust the control torque in the opening and closing directions to the nameplate torque. Start the electric device and gradually load until the control mechanism is activated. Measure once in each direction of opening and closing to determine its nameplate torque value. 5.11.3 Minimum control torque test. Adjust the control torque in the opening and closing directions to the minimum control torque state, start the electric device and gradually load until the torque control mechanism is activated, measure three times in each direction of opening and closing to determine its minimum control torque value. The above test results shall all comply with the provisions of 4.21. 5.12 Repeated deviation test of control torque
5.12.1 Install the electric device on the test bench, and adjust the torque control mechanism to the control torque value within the range in the opening and closing directions. Start the electric device with no load in the opening and closing directions, and gradually load until the torque control mechanism measures the output torque. 5.12.2 Measure three times in the above state and record according to Table 9. Table 9 Repeated deviation test of control torque Record table Control torque measured value M.
5.12.3 Data processing
Repeat deviation of control output torque:
M·Maximum or minimum measured value N·m;
M..The average value of the absolute value of the measured values, N·m. 5.13 Repeated deviation test of the stroke control mechanism to control the output shaft position. X100%
Average value
5.13.1 Install the electric device on the test bench, adjust the open and close (or contact) of the stroke control mechanism to two action positions (equivalent to the fully open and fully closed positions of the valve).
5.13.2 Start the electric device, add a load of about one-third of the nameplate torque value, and the stroke control mechanism stops the electric device at the fully open and fully closed positions (pre-adjusted action positions). This position is the reference position. 5.13.3 Start the electric device, keep the load unchanged, and run it twice in the open and closed directions respectively. The deviation between the stop position and the reference position each time meets the requirements of 4.23.
5.14 Strength test
5.14.1 When the electric device is only subjected to torque, install the electric device on the test bench so that the short-circuit control mechanism does not work. Use a high-power electric 522
JB/T 8528-1997
The motor or the wheel (handle) makes the electric device output the value specified in Table 6 for a duration of not less than 0.5$, then immediately unload and disassemble for inspection. The load-bearing parts of the electric device shall comply with the provisions of 4.24. 5.14.2 When the electric device is subjected to torque and thrust at the same time, install the electric device on the test bench so that the output shaft axis is subjected to the value specified in Table 6 for a duration of not less than 0.5$, then immediately unload and disassemble for inspection. All load-bearing parts of the electric device shall comply with the provisions of 4.24. 5.15 Life test|| tt||The life test of the electric device shall be carried out in accordance with the provisions of JB/7.247, and the results shall comply with the provisions of 4.25. 6 Inspection rules
6.1 Factory inspection
6.1.1 Each electric device shall be subject to factory inspection. 6.1.2 The items and technical requirements of factory inspection shall be in accordance with the provisions of Table 10. 6.2 Random inspection
6.2.1 Random inspection shall be carried out by randomly selecting from the electric devices in stock that have passed the inspection of the production and quality inspection departments. The sampling rate for each specification is 3 (not less than two units).
6.2.2 The items and technical requirements of random inspection shall be in accordance with the provisions of Table 10. If one unit fails to meet the requirements, double sampling shall be carried out. After the re-inspection, if there are still non-conformities, each unit shall be inspected.
6.3 Type inspection
6.3.1 Type tests shall be conducted in the following cases: a) Trial design and identification of new products; b) After formal production, if there are major changes in structure, materials, and processes, which may affect product performance; c) Electric devices produced in batches for more than 5 years; d) Electric devices that have been discontinued for more than 5 years are produced again; e) When the national quality supervision agency proposes type test requirements. 6.3.2 The items and technical requirements of type inspection shall be in accordance with the provisions of Table 10. 6.3.3 For products with the same structure, commercial materials, and processes, it is allowed to conduct type tests on typical specifications only. Table 10
Appearance inspection
Inspection items
Orientation of handwheel (handle)
Electrical wiring, wire
Electrical clearance and creepage distance
Indicator light color
Position indicating mechanism
Insulation resistance
Dielectric test
Manual and electric switching
Starting torque test
Maximum torque test
Maximum control torque test
Nameplate transfer test
Outgoing inspection
Spot inspection Type inspection
Technical requirements
Should meet 4 .5~4.8 provisions
should comply with the provisions of 1.9
should comply with the provisions of 4.10
should comply with the provisions of 4.11
should comply with the provisions of 1.12
should comply with the provisions of 4.15
should comply with the provisions of 1.16
should comply with the provisions of 4.17
should comply with the provisions of 4.18
should comply with the provisions of 4.19
should comply with the provisions of 4.20
should comply with the provisions of 1.20
should comply with the provisions of 4.21
should be derived from 1.2! Provisions
Inspection items
Minimum control torque test
Torque repetition deviation
Stroke repetition deviation
Strength test
Life test
Marking, packaging and storage
7.1 Marking
JB/T8528
—1997
Table 10 (end)
Inspection rules
Output inspection Random inspection
Type inspection
Technical requirements
Should comply with the provisions of 1.21
Should comply with the provisions of 1.22
Should comply with the provisions of 4.23
Should comply with the provisions of 21
Should comply with the provisions of 4.25
7.1.1 The nameplate material and the engraving method of the data on the nameplate should ensure that the handwriting is not easily erased during the entire use period of the electric device. 7.1.2 The nameplate should be fixed in a conspicuous place on the main box of the electric device, and the following contents should be indicated: a) Manufacturer name; b) Product name and model; c) Output torque; d) Output speed; c) Product number; d) Factory expiration date. 7.2 Packaging 7.2.1 The electric device should be packed and shipped and should be fixed in the box. 7.2.2 The packaging box should be rainproof and firm.
7.2.3 The words and signs on the outer wall of the packaging box should be clear and neat, and the contents are as follows:) Manufacturer name;
b) Name of the receiving station and receiving unit:
c) Product name and model:
d) "Do not invert" words and symbols;e) Gross weight and volume (length × width × height). 7.2.4 When the electric device leaves the factory, it should be accompanied by documents such as product certificate, product instruction manual and packing list. 7.2.5 The product packing list should indicate the following contents and should be stamped by the inspector: a) Manufacturer name and address;
b) Product name and model;
c) Product number;
d) Name and quantity of attached documents;
c) Quantity of packed products;
f) Packing date.
7.3 Storage
7.3.1 Before the product leaves the factory, the exposed processed surface should be coated with anti-rust oil. 7.3.2 The product should be stored in a ventilated and dry place. 52.1
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