CN203745144U - Sealed type safety valve airtightness test verifying apparatus - Google Patents

Sealed type safety valve airtightness test verifying apparatus Download PDF

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Publication number
CN203745144U
CN203745144U CN201320861230.8U CN201320861230U CN203745144U CN 203745144 U CN203745144 U CN 203745144U CN 201320861230 U CN201320861230 U CN 201320861230U CN 203745144 U CN203745144 U CN 203745144U
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CN
China
Prior art keywords
test gas
test
valve
gas
measured
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201320861230.8U
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Chinese (zh)
Inventor
孙琦
谢常欢
吴继权
谢青延
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SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST
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SHENZHEN INSTITUTE OF SPECIAL EQUIPMENT INSPECTION AND TEST
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Priority to CN201320861230.8U priority Critical patent/CN203745144U/en
Application granted granted Critical
Publication of CN203745144U publication Critical patent/CN203745144U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a sealed type safety valve airtightness test verifying apparatus. The apparatus comprises a test gas pumping device, a test gas collecting device and a test gas detecting device. The test gas pumping device is detachably connected with the outlet side of a safety valve to be tested so as to pump test gas into the safety valve to be tested. The test gas collecting device comprises a collecting chamber which can be detachably sleeved on the body of the safety valve to be tested so as to make the safety valve sealing opening to be tested isolated from the outside. The test gas detecting device is communicated with the collecting chamber to sense test gas leaked into the collecting chamber. The apparatus which is used for collecting and detecting leaked test gas can prevent leaked test gas from being diffused into the air and resulting in unnecessary harm to human bodies. Meanwhile, by means of the apparatus for detection, the detecting accuracy can be improved.

Description

A kind of pessimistic securit valve air-tight test verifying attachment
Technical field
The utility model relates to a kind of pessimistic securit valve air-tight test verifying attachment.
Background technology
Safety valve is the important safety attachment of pressure-bearing class special equipment, can be divided into according to the extent of injury of safety valve working medium: pessimistic securit valve and open type safety valve.The former uses at poisonous, harmful, inflammable and explosive medium, and in the time that safety valve is opened, discharge medium must be led to closed container through discharge tube, and safety valve waste side position has not allowed leakage.According to the relevant regulations of TSG ZF001 " safety valve safety and technical supervision code ", for pessimistic securit valve, after overall package, should carry out air-tight test to the second seal to be measured between the coordinate between valve body and valve gap first seal to be measured and valve gap and bonnet, not allow to leak.
Air-tight test should meet following requirement:
(1) test is only carried out at valve outlet waste side position, suppress to carrying out gas in valve body, and the maximum back pressure that pressure is safety valve, and be not less than 0.2MPa;
(2) duration of test runs 3min, does not allow to leak;
(3) test time will be taken care, and carries out airtight test after reaching test pressure certain hour again.
In standard criterion, the method to airtight test does not specify, existing test method is:
1, at the flange of safety valve outlet side, boost toward valve body air feed from outlet side position.
2, safety valve outlet side boosts to authorised pressure, pressurize.
3, observe gauge hand, if be stabilized in authorised pressure value, illustrate that gas is without leakage, otherwise gas has leakage; Coat soap bubble at the gap place of valve body seal to be measured, the leakage situation at direct vision port place simultaneously.
The influence factor that existing method in correlation technique exists for the inspection of leakage situation is more, such as observing gauge hand, if have leakage by the manometric valve of suppressing on pipeline, also can cause gauge hand drop, and this impermeability that does not represent valve itself is bad.And for example soap bubble observation, it is mainly to go to observe situation of change lathery by reviewer's eyes, and artificial factor impact is larger, and its accuracy class can not meet testing requirement.
In actual production, having the gas medium of many safety valve contacts is the hypertoxic media that human body had to injury, is not allow micro-leakage in air in its production run, also just cannot realize and detecting in order to upper traditional detection method.
Utility model content
The technical problems to be solved in the utility model is, a kind of pessimistic securit valve air-tight test verifying attachment is provided.
The utility model solves the technical scheme that its technical matters adopts: construct a kind of pessimistic securit valve air-tight test verifying attachment, comprise with the outlet side of safety valve to be measured be separablely connected, with the test gas pressure device of bulge test gas in described safety valve to be measured, also comprise test gas gathering-device and test gas pick-up unit;
Described test gas gathering-device comprises the collection chamber on the valve body that is located at separably described safety valve to be measured, so that the seal to be measured of described safety valve to be measured is isolated from the outside;
Described test gas pick-up unit is communicated with described collection chamber, leaks into the test gas in described collection chamber with sensing.
Preferably, described collection chamber is the collection chamber being formed by flexible sealing material.
Preferably, described collection chamber is provided with the collection mouth coordinating with described valve body, the described mouthful opening for flexible material formation of collecting, to fit with the valve body surface of described safety valve to be measured and to ensure that the test gas sealing of leaking from described seal to be measured is collected in described collection chamber.
Preferably, the edge of described collection mouth is provided with elastic component, collects the size of mouth and provides tightening force to make described collection mouth and the laminating of described valve body to adjust.
Preferably, described test gas pick-up unit comprises helium leak check instrument.
Preferably, between described helium leak check instrument and described collection chamber, be provided with conduit, with described helium leak check instrument that the test gas in described collection chamber is led.
Preferably, described test gas pick-up unit also comprises the testing result of described helium leak check instrument is carried out to feedback alarm device.
Preferably, the draft tube that provides source of the gas that test gas suppresses and described source of the gas to be communicated with is provided described test gas pressure device, be located at described draft tube outer end with the sealed interface that is connected with the outlet side of described safety valve to be measured and be located at the tensimeter in described draft tube, the test gas that described source of the gas provides is suppressed described outlet side through described draft tube, and described tensimeter detects the pressure of suppressing of described source of the gas.
Preferably, described source of the gas comprises the feeder that helium can be provided.
Implement pessimistic securit valve air-tight test verifying attachment of the present utility model, there is following beneficial effect: be located at separably by the test gas gathering-device in the utility model the cavity that forms a sealing on seal to be measured, the test gas leaking from seal to be measured is collected in collection chamber, then by test gas pick-up unit, the test gas leaking is responded to detection.This device is collected and is detected the test gas leaking, and the test gas of Leakage prevention is diffused in air, and human body is produced to unnecessary injury; , detect by instrument meanwhile, promoted the accuracy detecting.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the application schematic diagram of the pessimistic securit valve air-tight test verifying attachment in the utility model embodiment.
Embodiment
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
As shown in Figure 1, the pessimistic securit valve air-tight test verifying attachment in preferred embodiment of the utility model comprises test gas pressure device 10, test gas gathering-device 20 and test gas pick-up unit 30.
Further, test gas pressure device 10 draft tube 12 that provides source of the gas 11 that test gas is suppressed to be communicated with source of the gas 11 is provided, is located at draft tube 12 outer ends with the sealed interface 13 that is connected separably with the outlet side 41 of safety valve 40 to be measured and is located at the tensimeter 14 in draft tube 12.
In certain embodiments, the test gas that source of the gas 11 provides can be helium, ammonia etc., and the test gas of selecting in the present embodiment is the helium that detection sensitivity is higher.Sealed interface 13 is communicated with the outlet side 41 of safety valve 40 to be measured, and the mating face seal of sealed interface 13 and outlet side 41, to ensure that source of the gas 11 can not produce leakage between the two in the process of the interior bulge test gas of safety valve 40 to be measured.
Formation first seal 421 to be measured between valve gap 42 and valve body 43, formation second seal 422 to be measured between bonnet 44 and valve gap 42.
Test gas gathering-device 20 comprises the collection chamber 21 that is formed interior sky by sealed material, and collection chamber 21 is provided with collects mouth 22, to be located at separably on the first seal 421 to be measured, the second seal 422 to be measured.
In certain embodiments, collection chamber 21 can form by having flexible material, and understandably, in other embodiments, collection chamber 21 also can be other hard materials and forms.
Further, collect mouth 22 and can be the opening that flexible sealing material forms, to be set to the first seal to be measured 421, second at cover after on seal 422 to be measured and the valve body 43 surface laminatings of safety valve to be measured 40, thereby the test gas sealing of leaking from the first seal 421 to be measured, the second seal 422 to be measured is collected in collection chamber 21.
In certain embodiments, the edge of collecting mouth 22 is provided with the elastic components such as elastic cord 221, collect the size of mouth 22 and in the time coordinating with valve body 43, provide tightening force that collection mouth 22 is fitted tightly with valve body 43 with adjustment, meanwhile, also can adapt to the safety valve to be measured 40 of multiple different specification size.In other embodiments, also can tether be set along the edge of collecting mouth 22, collection mouth 22 is being tightened.
Understandably, collection chamber 21 can be covered the second seal 422 to be measured to carry out impermeability detection separately by this collection mouth 22, or two relative collection mouths 22 are set in collection chamber 21, separately the first seal 421 to be measured are covered it is carried out to impermeability detection.
In certain embodiments, test gas pick-up unit 30 comprises the helium leak check instrument 31 and the warning device 32 that are arranged on collection chamber 21 outsides, between helium leak check instrument 31 and collection chamber 21, be provided with conduit 311, with helium leak check instrument 31 that the test gas in collection chamber 21 is led.In other embodiments, test gas pick-up unit 30 also can be the pick-up units such as the ammonia leak locator corresponding with test gas.
Understandably, in other embodiments, collection chamber 21 also can directly be communicated with helium leak check instrument 31, or helium leak check instrument 31 is arranged in collection chamber 21, directly the test gas leaking is carried out to sensing.
In certain embodiments, warning device 32 is arranged on the outside of collection chamber 21, can comprise display screen, or comprises signal lamp etc., sense after test gas at helium leak check instrument 31, this signal is passed to warning device 32 to send corresponding alerting signal to testing staff.
Below in conjunction with accompanying drawing, application of the present utility model is described further.
Source of the gas 11 use test gases are suppressed outlet side 41, and tensimeter 14 can detect the pressure of suppressing of source of the gas 11, remains under corresponding test pressure and tests.
When the first seal to be measured 421, second is in the time that leaking appears in seal 422 to be measured, test gas can be collected in collection chamber 21.Through in the interior diffusion of collection chamber 21, can be sensed by helium leak check instrument 31, and send alerting signal by warning device 32 to testing staff.
Understandably, above-mentioned each technical characterictic can combination in any uses and unrestricted.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (9)

1. a pessimistic securit valve air-tight test verifying attachment, comprise with the outlet side (41) of safety valve to be measured (40) be separablely connected, with the test gas pressure device (10) to the interior bulge test gas of described safety valve to be measured (40), it is characterized in that, also comprise test gas gathering-device (20) and test gas pick-up unit (30);
Described test gas gathering-device (20) comprises the collection chamber (21) on the valve body (43) that is located at separably described safety valve to be measured (40), so that the seal to be measured of described safety valve to be measured (40) is isolated from the outside;
Described test gas pick-up unit (30) is communicated with described collection chamber (21), leaks into the test gas in described collection chamber (21) with sensing.
2. pessimistic securit valve air-tight test verifying attachment according to claim 1, is characterized in that, the collection chamber of described collection chamber (21) for being formed by flexible sealing material.
3. pessimistic securit valve air-tight test verifying attachment according to claim 2, it is characterized in that, described collection chamber (21) is provided with the collection mouth (22) coordinating with described valve body (43), described mouthful (22) opening for flexible material formation of collecting, to merge and to ensure that the test gas sealing of leaking from described seal to be measured is collected in described collection chamber (21) with valve body (43) surface label of described safety valve to be measured (40).
4. pessimistic securit valve air-tight test verifying attachment according to claim 3, it is characterized in that, the described edge of collecting mouthful (22) is provided with elastic component (221), collects the size of mouthful (22) and provides tightening force to make described collection mouthful (22) and described valve body (43) laminating to adjust.
5. pessimistic securit valve air-tight test verifying attachment according to claim 1, is characterized in that, described test gas pick-up unit (30) comprises helium leak check instrument (31).
6. pessimistic securit valve air-tight test verifying attachment according to claim 5, it is characterized in that, between described helium leak check instrument (31) and described collection chamber (21), be provided with conduit (311), with described helium leak check instrument (31) that the test gas in described collection chamber (21) is led.
7. pessimistic securit valve air-tight test verifying attachment according to claim 6, it is characterized in that, described test gas pick-up unit (30) also comprises the testing result of described helium leak check instrument (31) is carried out to feedback alarm device (32).
8. pessimistic securit valve air-tight test verifying attachment according to claim 7, it is characterized in that, the source of the gas (11) that provides test gas to suppress is provided described test gas pressure device (10), draft tube (12) with described source of the gas (11) connection, be located at the sealed interface (13) of described draft tube (12) outer end to be connected with the outlet side (41) of described safety valve to be measured (40), and be located at the tensimeter (14) in described draft tube (12), the test gas that described source of the gas (11) provides is suppressed described outlet side (41) through described draft tube (12), described tensimeter (14) detects the pressure of suppressing of described source of the gas (11).
9. pessimistic securit valve air-tight test verifying attachment according to claim 8, is characterized in that, described source of the gas (11) comprises the feeder that helium can be provided.
CN201320861230.8U 2013-12-24 2013-12-24 Sealed type safety valve airtightness test verifying apparatus Expired - Fee Related CN203745144U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320861230.8U CN203745144U (en) 2013-12-24 2013-12-24 Sealed type safety valve airtightness test verifying apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320861230.8U CN203745144U (en) 2013-12-24 2013-12-24 Sealed type safety valve airtightness test verifying apparatus

Publications (1)

Publication Number Publication Date
CN203745144U true CN203745144U (en) 2014-07-30

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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113405740A (en) * 2021-06-21 2021-09-17 北京卫星环境工程研究所 Fluoride leakage detection equipment and detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113405740A (en) * 2021-06-21 2021-09-17 北京卫星环境工程研究所 Fluoride leakage detection equipment and detection method

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140730

Termination date: 20161224