CN206362506U - The anhydrous pressure testing device of ball valve - Google Patents

The anhydrous pressure testing device of ball valve Download PDF

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Publication number
CN206362506U
CN206362506U CN201621466608.4U CN201621466608U CN206362506U CN 206362506 U CN206362506 U CN 206362506U CN 201621466608 U CN201621466608 U CN 201621466608U CN 206362506 U CN206362506 U CN 206362506U
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pressure
ball valve
valve
measured
low
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CN201621466608.4U
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高翔
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Abstract

The utility model discloses a kind of anhydrous pressure testing device of ball valve, it is a kind of anhydrous pressure testing device for testing ball valve air-tightness automatically using gas as medium, its structure is mainly by gas source pipe, high-voltage tube, low-voltage tube, seal pipe reference arm and ball valve pressure measurement branch road etc. are constituted, the seal pipe reference arm has seal pipe, and connection seal pipe air inlet upper high pressure retaining valve with connect the upper low-pressure retaining valve in seal pipe gas outlet, the ball valve pressure measurement branch road has ball valve to be measured, and connection ball valve air inlet to be measured lower high pressure retaining valve with connect the lower low-pressure retaining valve in ball valve gas outlet to be measured;Simultaneously, seal pipe air inlet and seal pipe gas outlet are respectively equipped with differential pressure pick-up, ball valve air inlet to be measured and ball valve gas outlet to be measured are respectively equipped with lower differential pressure pick-up, due to being used as test mode using differential pressure type, therefore measuring accuracy can be improved, also overcome that traditional pressure water testing efficiency is low, measuring accuracy is not enough, also need the drawbacks such as drying and processing after pressure water.

Description

The anhydrous pressure testing device of ball valve
Technical field
The utility model is related to the anhydrous pressure testing dress of a kind of pressure testing device of use gas test ball valve air-tightness, i.e. ball valve Put.
Background technology
With automated production equipment becoming increasingly popular in manufacturing enterprise, automation pressure testing equipment is used as automated production The important component of equipment is also increasingly subject to pay attention to, and such as liquid pressure testing machine is a kind of for testing setting for ball valve air-tightness Standby, it largely is applied to test in ball valve air-tightness automatically, and its principle is by pouring highly pressurised liquid into ball valve, by pressure Gap sensor detection ball valve internal pressure change, so that it is determined that whether ball valve air-tightness is good.But, existing pressure testing machine is being used During or there are problems that:1st, the water all used at present is used as the liquid medium of test air-tightness, test step Gas process is protected in only one ball, technics comparing is simple;2nd, with after water pressure testing, for ensure ball valve surface will not because remain it is water stain and Get rusty, therefore also need to carry out drying and processing to ball valve.
The content of the invention
Technical problem to be solved in the utility model is that providing one kind replaces liquid with gas as medium to test Ball valve air-tightness, test mode is tested using differential pressure type, and measuring accuracy is higher, thus overcome traditional pressure water testing efficiency it is low, The drawbacks such as drying and processing are also needed after measuring accuracy deficiency, pressure water.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of anhydrous pressure testing device of ball valve, is the anhydrous pressure testing device using gas as medium, described anhydrous pressure testing dress Put including gas source pipe, shunted and the high-voltage tube and low-voltage tube that go out and the sealing being installed in parallel between high and low pressure pipe from gas source pipe Pipe reference arm and ball valve pressure measurement branch road;Described seal pipe reference arm includes seal pipe, connected in seal pipe air inlet Upper high pressure retaining valve with connect the upper low-pressure retaining valve in seal pipe gas outlet;Described ball valve pressure measurement branch road includes ball valve to be measured, company Lead to lower high pressure retaining valve in ball valve air inlet to be measured and connect the lower low-pressure retaining valve in ball valve gas outlet to be measured;Described seal pipe Air inlet and seal pipe gas outlet are respectively equipped with differential pressure pick-up;Described ball valve air inlet to be measured and ball valve gas outlet to be measured It is respectively equipped with lower differential pressure pick-up;The high relief valve that described upper high pressure retaining valve is communicated with, what upper low-pressure retaining valve was communicated with Low relief valve.
Described high-voltage tube is provided with pressure regulator valve, high pressure tank and the high pressure fill valve being sequentially connected in series.
Described low-voltage tube is provided with pressure regulator valve, low pressure gasholder and the low inflation valve being sequentially connected in series.
Described ball valve to be measured is provided with the servomotor for controlling ball valve to be measured to open and close angle.
Compared with prior art, the utility model mainly provides a kind of anhydrous pressure testing device using gas as medium, Its structure includes gas source pipe, the high-voltage tube and low-voltage tube that shunt and go out from gas source pipe and is installed in parallel between high and low pressure pipe Seal pipe reference arm and ball valve pressure measurement branch road, the seal pipe reference arm have seal pipe and connected in seal pipe air inlet Upper high pressure retaining valve with connect the upper low-pressure retaining valve in seal pipe gas outlet, the ball valve pressure measurement branch road have ball valve to be measured and even Lead to lower high pressure retaining valve in ball valve air inlet to be measured and connect the lower low-pressure retaining valve in ball valve gas outlet to be measured;Meanwhile, seal pipe Air inlet and seal pipe gas outlet are respectively equipped with differential pressure pick-up, and ball valve air inlet to be measured and ball valve gas outlet to be measured are set respectively There is lower differential pressure pick-up, due to using differential pressure type as test mode, therefore measuring accuracy can be improved, also overcome traditional pressure water Testing efficiency is low, measuring accuracy is not enough, pressure water after also need the drawbacks such as drying and processing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model embodiment will again be elaborated by above-mentioned accompanying drawing below.
As shown in figure 1,1. gas source pipes, 2. high-voltage tubes, 21. high pressure tanks, 22. high pressure fill valves, 3. low-voltage tubes, 31. Low pressure gasholder, 32. low inflation valves, 4. pressure regulator valves, 5. seal pipe reference arms, 51. seal pipes, high pressure retaining valve on 52., 53. on high pressure retaining valve, 63. times low-pressure retaining valves, 7. high pressure releases under low-pressure retaining valve, 6. ball valve pressure measurement branch roads, 61. ball valves to be measured, 62. Valve, 8. low relief valves, differential pressure pick-up, 10. times differential pressure pick-ups, 11. servomotors on 9..
The anhydrous pressure testing device of ball valve, as shown in figure 1, it is one kind tests ball valve air-tightness automatically using gas as medium Anhydrous pressure testing device, its structure mainly by gas source pipe 1, high-voltage tube 2, low-voltage tube 3, seal pipe reference arm 5 and ball valve survey The grade of branch road 6 is pressed to constitute.
Described gas source pipe 1 is used for the gas of input test, then distributes the He of high-voltage tube 2 with point left and right shown in Fig. 1 Low-voltage tube 3;Wherein, high-voltage tube 2 is provided with pressure regulator valve 4, the and of high pressure tank 21 being sequentially connected in series according to gas flow direction High pressure fill valve 22, and the output high-pressure gas after high pressure fill valve;Low-voltage tube 3 is provided with and gone here and there successively according to gas flow direction Pressure regulator valve 4, low pressure gasholder 31 and the low inflation valve 32 of connection, and export low-pressure gas after low inflation valve.
Described seal pipe reference arm 5 and ball valve pressure measurement branch road 6 is arranged in parallel between high-voltage tube 2 and low-voltage tube 3, tool Body is connected in parallel between high pressure fill valve 22 and low inflation valve 32.
Described seal pipe reference arm 5 include seal pipe 51, connection seal pipe air inlet the upper high and of pressure retaining valve 52 The upper low-pressure retaining valve 53 in seal pipe gas outlet is connected, it functions as reference during 61 air tightness test of ball valve to be measured, and Kept all the time with ball valve 61 to be measured while entering outlet, to ensure the authenticity of test data in test;Described seal pipe is entered Gas port and seal pipe gas outlet are respectively equipped with differential pressure pick-up 9, available for the air tightness test for measuring seal pipe inlet, outlet Numerical value;Meanwhile, the high relief valve 7 that upper high pressure retaining valve 52 is communicated with, the low relief valve 8 that upper low-pressure retaining valve 53 is communicated with can For releasing the gas in pipeline, prevent that air pressure is impacted to differential pressure pick-up in pipeline.
Described ball valve pressure measurement branch road 6 include ball valve 61 to be measured, connection ball valve air inlet to be measured lower high pressure retaining valve 62 With connect the lower low-pressure retaining valve 63 in ball valve gas outlet to be measured, and ball valve air inlet to be measured and ball valve gas outlet to be measured are respectively equipped with Lower differential pressure pick-up 10, available for the air tightness test numerical value for measuring ball valve inlet, outlet to be measured;In addition, on ball valve 61 to be measured Servomotor 11 is additionally provided with, available for the rotation for driving the rotation of ball valve 61 pin to be measured, so as to automatically control the keying of ball valve 61 to be measured Angle, is opened or closed.
Process of the present utility model and used time are as shown in the table:
With reference to above table content, concrete technology flow process of the present utility model is as follows:
1st, after three axle robert captures ball valve 61 to be measured to frock, closure cylinder blocks the upper and lower side of ball valve 61 to be measured The rotation pin of ball valve to be measured is rotated 180 degree by face, servomotor 11 by both direction, to detect whether ball valve 61 to be measured has assembled Good, whether valve element spheroid can rotate, used time 4s;
2nd, ball valve 61 to be measured is remained off, and high pressure fill valve 22 is filled with gases at high pressure 7kg/cm2, low inflation valve is same When 32 be filled with low-pressure gas 6.5kg/cm2.After the blowing pressure reaches predetermined value(High pressure 7kg/cm2;Low pressure 6.5kg/cm2), on High pressure retaining valve 52, lower high pressure retaining valve 62, upper low-pressure retaining valve 53 and lower low-pressure retaining valve 63 are simultaneously closed off, then high relief valve 7 and low Relief valve 8 releases the gas in pipeline simultaneously, and this step is to prevent that air pressure is impacted to differential pressure pick-up in pipeline.Finally open Beginning pressurize is tested, due to seal pipe 51 for pipeline is fully sealed, therefore steady positioned at the upper differential pressure pick-up 9 of seal pipe inlet, outlet Numerical value after pressure keeps constant, and the numerical value of the lower differential pressure pick-up 10 positioned at the inlet, outlet of ball valve 61 to be measured starts gradually to subtract It is small.If the numerical value of two lower differential pressure pick-ups 10 slowly reduces and meets national standard leakage rate, illustrate ball valve 61 to be measured Upper and lower side sealing ring air-tightness is qualified;, whereas if wherein one or two differential pressure pick-up numerical value reduces rapidly and more than state Family's standard leak amount, then the rapid one end sealing ring air-tightness of numerical value reduction is unqualified.This processing step inflationtime 8s, voltage stabilizing 4s is tested, 12s. when sharing
3rd, servomotor 11 drives the rotation pin of ball valve 61 to be measured to rotate 45 degree, and ball valve to be measured keeps half-open half closed state, on Low-pressure retaining valve 53 and lower low-pressure retaining valve 63 are closed, and the gas outlet of seal pipe 51 and the gas outlet of ball valve to be measured 61 are blocked as plug.So High pressure fill valve 22 is filled with gases at high pressure afterwards, reaches after preset air pressure value, and upper high pressure retaining valve 52 and lower high pressure retaining valve 62 are closed, high Relief valve 7 opens the gas released in pipeline.Finally start pressurize test, the upper differential pressure pick-up 9 of same seal pipe air inlet Numerical value keep constant, and the numerical value of the lower differential pressure pick-up 10 of the air inlet of ball valve to be measured 61 starts to be gradually reduced.If lower difference The numerical value of pressure sensor 10 slowly reduces and meets national standard leakage rate, then illustrates that the valve body bonnet screw thread of ball valve 61 to be measured connects Connect hermetic seal at place and ball valve rotation pin sealing ring qualified;, whereas if the numerical value of lower differential pressure pick-up 10 reduces and exceeded rapidly National standard leakage rate, then illustrate ball valve 61 to be measured valve body bonnet threaded connection place and ball valve rotation pin sealing ring at hermetic seal not It is qualified.This processing step inflationtime 8s, voltage stabilizing test 4s, 12s when sharing.
4th, servomotor 11 drives the rotation pin of ball valve 61 to be measured to be rotated by 90 °, and high pressure fill valve 22 and low inflation valve 32 are same When insufflation gas, reach after preset air pressure value, servomotor 11 drives the rotation pin of ball valve 61 to be measured to be rotated by 90 °, ball valve to be measured is protected Closed mode is held, then high relief valve 7 and low relief valve 8 start to release the gas in pipeline, start pressurize test in ball.Pressurize After 4s, servomotor 11 drives the rotation pin of ball valve 61 to be measured to be rotated by 90 °, and whether upper and lower differential pressure pick-up is checked in ball has guarantor Gas, then illustrates that guarantor's gas is qualified in the ball of ball valve 61 to be measured if protecting gas, otherwise it is unqualified that gas is protected in ball.This processing step inflation 4 Second, voltage stabilizing test 4s, 8s when sharing.
5th, preceding four procedures inspection is got off if certified products, then servomotor 11 drives the rotation pin of ball valve 61 to be measured to revolve Turn, keep it turned on ball valve 61 to be measured, used time 2s.
6th, manipulator point certified products are grabbed on corresponding discharging streamline with defective work, used time 2s, altogether the used time 40s。

Claims (4)

1. a kind of anhydrous pressure testing device of ball valve, is the anhydrous pressure testing device using gas as medium, it is characterised in that described nothing Water pressure testing device includes gas source pipe(1), shunt and the high-voltage tube that goes out from gas source pipe(2)And low-voltage tube(3)And be installed in parallel Seal pipe reference arm between high and low pressure pipe(5)With ball valve pressure measurement branch road(6);Described seal pipe reference arm(5)Including Seal pipe(51), connection seal pipe air inlet upper high pressure retaining valve(52)With connect the upper low-pressure retaining valve in seal pipe gas outlet (53);Described ball valve pressure measurement branch road(6)Including ball valve to be measured(61), connection ball valve air inlet to be measured lower high pressure retaining valve (62)With connect the lower low-pressure retaining valve in ball valve gas outlet to be measured(63);Described seal pipe(51)Air inlet and seal pipe(51) Gas outlet is respectively equipped with differential pressure pick-up(9);Described ball valve to be measured(61)Air inlet and ball valve to be measured(61)Gas outlet point Differential pressure pick-up She You not descended(10);Described upper high pressure retaining valve(52)The high relief valve being communicated with(7), upper low-pressure retaining valve (53)The low relief valve being communicated with(8).
2. the anhydrous pressure testing device of ball valve according to claim 1, it is characterised in that described high-voltage tube(2)Be provided with according to The pressure regulator valve of secondary series connection(4), high pressure tank(21)And high pressure fill valve(22).
3. the anhydrous pressure testing device of ball valve according to claim 1, it is characterised in that described low-voltage tube(3)Be provided with according to The pressure regulator valve of secondary series connection(4), low pressure gasholder(31)With low inflation valve(32).
4. the anhydrous pressure testing device of ball valve according to any one of claim 1 ~ 3, it is characterised in that described ball valve to be measured (61)Provided with the servomotor for controlling ball valve to be measured to open and close angle(11).
CN201621466608.4U 2016-12-29 2016-12-29 The anhydrous pressure testing device of ball valve Active CN206362506U (en)

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CN201621466608.4U CN206362506U (en) 2016-12-29 2016-12-29 The anhydrous pressure testing device of ball valve

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Application Number Priority Date Filing Date Title
CN201621466608.4U CN206362506U (en) 2016-12-29 2016-12-29 The anhydrous pressure testing device of ball valve

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109506855A (en) * 2018-12-28 2019-03-22 中国计量大学 A kind of PE ball valve Micro blazed-grating rapid detection system and method
CN109540421A (en) * 2017-09-21 2019-03-29 青海时代新能源科技有限公司 Air tightness detection device and method
CN112710441A (en) * 2020-12-16 2021-04-27 河北光德流体控制有限公司 Ball valve air tightness water-free detection system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109540421A (en) * 2017-09-21 2019-03-29 青海时代新能源科技有限公司 Air tightness detection device and method
CN109506855A (en) * 2018-12-28 2019-03-22 中国计量大学 A kind of PE ball valve Micro blazed-grating rapid detection system and method
CN112710441A (en) * 2020-12-16 2021-04-27 河北光德流体控制有限公司 Ball valve air tightness water-free detection system and method
CN112710441B (en) * 2020-12-16 2023-10-17 河北光德流体控制有限公司 Ball valve air tightness anhydrous detection system and method

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