CN201707178U

CN201707178U - Sealing test device for instruments and valves

Info

Publication number: CN201707178U
Application number: CN201020214464XU
Authority: CN
Inventors: 吴杰; 蔡云达; 缪惠流
Original assignee: State Nuclear Power Automation System Engineering Co Ltd
Current assignee: State Nuclear Power Automation System Engineering Co Ltd
Priority date: 2010-06-02
Filing date: 2010-06-02
Publication date: 2011-01-12
Anticipated expiration: 2020-06-02

Abstract

The utility model relates to the field of instrument and valve detection technology, in particular to a sealing test device for instruments and valves. The device is characterized in that a gas source is in pipeline connection with a second pressure regulating valve, a third pressure gauge, a first reversing valve and a clamping cylinder sequentially, so as to form a clamping passage; the gas source is in pipeline connection with a first pressure regulating valve, a first pressure gauge, a first stop valve, a second pressure gauge, a valve to be tested, the first reversing valve, the third pressure gauge and the second pressure regulating valve sequentially, so as to form a detection loop; the gas source is in pipeline connection with a third pressure regulating valve, a fourth pressure gauge, a second stop valve, a fifth pressure gauge, a second reversing valve and a lifting air cylinder sequentially, so as to form a lifting passage; and a water tank is arranged above the lifting air cylinder. In the utility model with simple structure and safe and convenient use, the valve to be tested is arranged in the water basin of the water tank during detection; and by observing the amount of leaked bubbles, qualitative judgment of valve leakage can be realized, so as to avoid high-voltage operation, enhance the safety of the testing device, and reduce the work intensity of the operating staff.

Description

The instrument valve seal test device

Technical field

The utility model belongs to instrument valve detection technique field, relates in particular to a kind of seal test device of instrument valve.

Background technology

The instrument valve seal test device is the specialized equipment that carries out testing valve performance, and test unit can carry out the experiments of sealing performance of valve, and whether check valve exists valve seat, goes up sealing, packing leaking situation.Can satisfy the test unit of valve leak test standard MSS SP-61 (steel valve pressure test) and FCI 70-2 (valve leak standard) at present, the mode of leak check generally adopts the mode of pipeline pressure meter reading, judges leakage situation by checking that the pipeline pressure reading changes; Or adopt liquid as test(ing) medium, judge the valve leak situation by checking leak of liquid.All there is certain defective in these two kinds of leak detection modes: the mode of tensimeter leak detection can't detect leakage very in a small amount; And for the higher instrument valve of design pressure with liquid during as test(ing) medium, there is certain potential safety hazard in exigent test pressure.

The utility model content

The technical problems to be solved in the utility model provides a kind of simple for structure, safe ready does not need condition of high voltage can detect the instrument valve seal test device of revealing in a small amount.

For achieving the above object, the technical solution adopted in the utility model is: a kind of instrument valve seal test device, comprise source of the gas, lift cylinder, clamping cylinder, water tank and detection platform, it is characterized in that: the described source of the gas and second pressure regulator valve. the 3rd tensimeter, first reversal valve, described clamping cylinder pipeline successively are connected, constitute the clamping passage, described clamping cylinder piston motion state is controlled by described first reversal valve; The described source of the gas and first pressure regulator valve. first tensimeter, first stop valve, second tensimeter, place valve to be checked on the described detection platform, first reversal valve, the 3rd tensimeter, second pressure regulator valve successively pipeline be connected, constitute and detect the loop; Described source of the gas and the 3rd pressure regulator valve. the 4th tensimeter, second stop valve, the 5th tensimeter, second reversal valve, described lift cylinder pipeline successively are connected, and constitute hoist trunk; The below of described lift cylinder top, detection platform is equipped with described water tank, and when water tank rose, the valve to be checked on the detection platform placed the pond of described water tank.

Beneficial effect of the present utility model is: simple for structure, safe ready, select the gas of 5.5-6.9bar for use, can be by valve to be checked be dipped in the pond, the mode that record per minute bubble leaks quantity qualitatively judges valve leak, avoid under high pressure carrying out leakage test, increased the security of test unit greatly.Another aspect, the instrument valve sealing property tester can adopt automatic control, just can clamp valve to be measured and the operation of lifting water tank by automatic control test device by the button on the operator's console, greatly reduces operating personnel's working strength.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the structural representation of the utility model instrument valve seal test device.

Among the figure: the 1-source of the gas; 2.1,2.2,2.3-first, second, third pressure regulator valve; 3.1,3.2,3.3,3.4,3.5-first, second, third, fourth, the 5th tensimeter; 4.1,4.2-first stop valve, second stop valve; 5.1,5.2-first reversal valve, second reversal valve; 6-clamps cylinder; 7-valve to be checked; The 8-water tank; The 9-lift cylinder.

Embodiment

Fig. 1 is the structural representation of the utility model instrument valve seal test device, as seen from the figure, a kind of instrument valve seal test device, comprise source of the gas 1, lift cylinder 9, clamp cylinder 6, water tank 8 and detection platform, it is characterized in that: described source of the gas 1 is connected with the second pressure regulator valve 2.2. the 3rd tensimeter 3.3, first reversal valve 5.1, described clamping cylinder 6 pipeline successively, constitute the clamping passage, described clamping cylinder 6 piston motion states are subjected to 5.1 controls of described first reversal valve; Described source of the gas 1 and the first pressure regulator valve 2.1., first tensimeter 3.1, first stop valve, 4.1 second tensimeters 3.2, place valve to be checked 7 on the described platform to be checked, first reversal valve 5.1, the 3rd tensimeter 3.3, second pressure regulator valve 2.2 successively pipeline be connected, constitute and detect the loop; Described source of the gas 1 is connected with the 3rd pressure regulator valve 2.3. the 4th tensimeter 3.4, second stop valve 4.2, the 5th tensimeter 3.5, second reversal valve 5.2, described lift cylinder 9 pipeline successively, constitutes hoist trunk; The below of described lift cylinder 9 tops, platform to be checked is equipped with described water tank 8, and when described water tank 8 rose, the valve to be checked 7 on the platform to be checked placed the pond of described water tank 8.

The instrument valve seal test device adopts hydraulic cylinder to clamp and apparatus for automatically lifting, can adopt auto-control mode, by the shift knob on the operator's console reversal valve and test unit is controlled.The control principle of test unit is, is provided with the flexible of reversal valve control cylinder on gas circuit, and then realizes the function of the lifting of function that instrument valve clamps and water tank.

Instrument valve leakage test operation steps is:

(1) valve 7 to be checked is placed on the test platform, by first reversal valve 5.1 of the clamping button control on the operator's console, makes the gas of source of the gas 1 enter by second pressure regulator valve 2.2 and clamps cylinder 6, makes that valve to be measured 7 is clamped;

(2) then, the control lifting button is controlled second reversal valve 5.2, open second stop valve 4.2, make the source of the gas of source of the gas 1 enter lift cylinder 9, the water tank 8 that places lift cylinder 9 tops is risen, valve 7 to be measured is immersed in the pond of water tank 8 by the 3rd pressure regulator valve 2.3;

(3) last, open first stop valve 4.1, make source of the gas 1 gas introduce by first pressure regulator valve 2.1 and detect the loop, operating personnel are by observing the valve to be measured 7 in the submergence water tank 8, and place, record slit bubble per minute leakage quantity, the valve leak situation is qualitatively judged.

Claims

1. instrument valve seal test device, comprise source of the gas (1), lift cylinder (9), clamp cylinder (6), water tank (8) and detection platform, it is characterized in that: described source of the gas (1) is connected with second pressure regulator valve (2.2), the 3rd tensimeter (3.3), first reversal valve (5.1), described clamping cylinder (6) pipeline successively, constitute the clamping passage, described clamping cylinder (6) piston motion state is subjected to described first reversal valve (5.1) control; Described source of the gas (1) and first pressure regulator valve (2.1), first tensimeter (3.1), first stop valve (4.1), second tensimeter (3.2), place detection valve (7) on the described detection platform, first reversal valve (5.1), the 3rd tensimeter (3.3), second pressure regulator valve (2.2) successively pipeline be connected, constitute and detect the loop; Described source of the gas (1) is connected with the 3rd pressure regulator valve (2.3), the 4th tensimeter (3.4), second stop valve (4.2), the 5th tensimeter (3.5), second reversal valve (5.2), described lift cylinder (9) pipeline successively, constitutes hoist trunk; The below of described lift cylinder (9) top, detection platform is equipped with water tank (8), and when described water tank (8) rose, the detection valve (7) on the detection platform placed the pond of described water tank (8).