CN101929923A

CN101929923A - Life testing device for check valve

Info

Publication number: CN101929923A
Application number: CN2009100316200A
Authority: CN
Inventors: 张逸芳; 陆平
Original assignee: Jiangsu Shentong Valve Co Ltd
Current assignee: Jiangsu Shentong Valve Co Ltd
Priority date: 2009-06-19
Filing date: 2009-06-19
Publication date: 2010-12-29

Abstract

The invention provides a life testing device for a check valve. The device comprises a water tank, wherein the water tank is connected with an electric pump; the electric pump is connected in parallel with an overflow valve and connected in series with a cut-off valve I and then enters the lower part of a high-pressure tank; the middle part of the high-pressure tank is connected with a water pipe; the water pipe is sequentially connected with a cut-off valve II, the check valve, a cut-off valve III and the upper part of the water tank; the upper part of the high-pressure tank is also provided with an exhaust valve and a safety valve; the cut-off valve II is an electric cut-off valve; and a peeker is arranged between the check valve and the cut-off valve III. The device has the advantages of automatic mode, convenient and fast testing, time saving, labor saving and high testing efficiency.

Description

The life test apparatus of non-return valve

Technical field

The present invention relates to a kind of test unit, especially a kind of life test apparatus of non-return valve.

Background technology

Non-return valve claims check (non-return) valve or retaining valve again, is to rely on medium itself to flow and automatic open and close flap, is used for preventing the valve that medium flows backwards, and the effect of such valve is only to allow medium to flow to a direction.Under the fluid pressure action that prescribed direction flows, flap is opened, and when fluid flowed in the other direction, under the deadweight effect by hydrodynamic pressure and flap, flap was closed, thereby cuts off media flow.When non-return valve is carried out durability test, generally adopt manual mode, back down flap with instrument, allow flap fall again, circulate with this, the effort of taking a lot of work, work efficiency is low.

Summary of the invention

The effort of taking a lot of work when overcoming existing non-return valve durability test, the deficiency that work efficiency is low the invention provides a kind of non-return valve life test apparatus.

The technical solution adopted for the present invention to solve the technical problems is a kind of non-return valve life test apparatus, one water tank is arranged, be connected to an electrodynamic pump on the water tank, be parallel with surplus valve on the electrodynamic pump, electrodynamic pump is serially connected with the bottom that enters pressure pan behind the stop valve I, pressure pan middle part is connected to water pipe, is connected to the top that connects water tank behind stop valve II, non-return valve, the stop valve III on the water pipe successively, on the top of pressure pan vent valve, safety valve is housed also.

Stop valve II is electronic stop valve, between non-return valve and the stop valve III peeker is housed also.

The invention has the beneficial effects as follows the automatic mode that adopts, test convenient and swift, time saving and energy saving, the test efficiency height.

Description of drawings

The invention will be further described below in conjunction with drawings and Examples.

Fig. 1 is the structural map of present embodiment;

Among the figure: 1. vent valve; 2. safety valve; 3. pressure pan; 4. stop valve I; 5. stop valve II; 6. electrodynamic pump; 7. non-return valve; 8. surplus valve; 9. peeker; 10. water tank; 11. stop valve III.

Embodiment

A kind of non-return valve life test apparatus, one water tank 10 is arranged, be connected to an electrodynamic pump 6 on the water tank 10, be parallel with surplus valve 8 on the electrodynamic pump 6, electrodynamic pump 6 is serially connected with the bottom that enters pressure pan 3 behind the stop valve I 4, pressure pan 3 middle parts are connected to water pipe, are connected to the top of stop valve II 5, non-return valve 7, stop valve III 11 back connection water tanks 10 on the water pipe successively, on the top of pressure pan 3 vent valve 1, safety valve 2 are housed also.Stop valve II 5 is electronic stop valve, between non-return valve 7 and the stop valve III11 peeker 9 is housed also.When test method began, stop valve I 4, stop valve II 5, stop valve III 11 were in opening, and non-return valve 7 is in closed condition.Start electrodynamic pump 6, press water injects pressure pan 3, the stop valve II 5 that flows through after the voltage stabilizing, and the flap of non-return valve 7 is opened under the water under high pressure effect, and High-Pressure Water is through peeker 9, stop valve III11 reflow tank.Close stop valve II 5, the flap of non-return valve 7 is closed under the spring force effect, opens stop valve II 5, and the flap of non-return valve 7 is opened under the water under high pressure effect, and so circulation realizes the durability test of non-return valve 7.

Claims

1. non-return valve life test apparatus, it is characterized in that: a water tank is arranged, be connected to an electrodynamic pump on the water tank, be parallel with surplus valve on the electrodynamic pump, electrodynamic pump is serially connected with the bottom that enters pressure pan behind the stop valve I, pressure pan middle part is connected to water pipe, is connected to the top that connects water tank behind stop valve II, non-return valve, the stop valve III on the water pipe successively, on the top of pressure pan vent valve, safety valve is housed also.

2. according to claims 1 described non-return valve life test apparatus, it is characterized in that: described stop valve II is electronic stop valve.

3. according to claims 1 or 2 described non-return valve life test apparatus, it is characterized in that: between described non-return valve and the stop valve III peeker is housed also.