CN201331419Y - Leakage detector for rubber-based membrane used for pressure regulator - Google Patents
Leakage detector for rubber-based membrane used for pressure regulator Download PDFInfo
- Publication number
- CN201331419Y CN201331419Y CNU2008202251080U CN200820225108U CN201331419Y CN 201331419 Y CN201331419 Y CN 201331419Y CN U2008202251080 U CNU2008202251080 U CN U2008202251080U CN 200820225108 U CN200820225108 U CN 200820225108U CN 201331419 Y CN201331419 Y CN 201331419Y
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- supporting plate
- diaphragm
- pressure regulator
- pincers
- rubber
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Abstract
The utility model relates to a leakage detector for the rubber-based membrane used for a gas pressure regulator, in particular to a leakage detector for the rubber-based membrane using textile as a reinforced material for a gas pressure regulator. A pressing tongs is respectively arranged on two side ends of a rigid supporting plate made from a metallic material; the clamping end of the pressing tongs is jammed on a rigid ring-shaped pressure washer; the diameter of the inside circumference of the pressure washer is less than the diameter of the outside circumference of the detected membrane; an intake pipe is arranged on the circumference of the supporting plate in the form of uniculus, and a pressure gauge is arranged at the air inlet position of the intake pipe; the intake pipe is in inclined connection with the air inlet arranged on the covering position of the detected membrane positioned on the upper side of the supporting plate after passing through the middle layer of the supporting plate, so as to inject high pressure gas or fluid to the space between the detected membrane and the supporting plate; a pressing tongs fixing screw hole is respectively arranged on the upper side of the supporting plate according to the different sizes of the detected membrane, so as to flexibly adjust the fixed position of the pressing tongs. The leakage detector has the advantages of wide application scope, low cost, convenient use and operation, labor and time saving, high detection efficiency, and strong reliability.
Description
Technical field:
The utility model relates to the rubber matrix diaphragm leakage detection apparatus that a kind of gas pressure regulator, governor uses, and particularly a kind of is the rubber matrix pressure regulator diaphragm leakage detection apparatus of reinforcing material with the textile.
Background technology:
Rubber diaphragm is widely used in the gas pressure regulator, governor, and in gas pressure regulator, governor, rubber diaphragm mainly contains two kinds: homophony diaphragm and balance diaphragm.The effect of homophony diaphragm is the variation of perception top hole pressure, by driving the unlatching and closure that the valve port bar moves up and down and controls valve port, thereby adjust air inflow top hole pressure is maintained in the scope of design, to guarantee the safety of house lead in combustion gas.The effect of balance diaphragm is to offset the out-of-balance force that flap is subjected to.Whether the present invention mainly leaks gas in order to detect the homophony diaphragm.Usually, the pressure regulator rubber diaphragm adopts compound substance to make, various pressure regulator rubber diaphragms commonly used at present utilize textile to combine with rubber matrix as reinforcing material (being commonly called as base cloth) and are prepared from, the main effect of base cloth is to make diaphragm have certain mechanical strength and limiting diaphragm distortion, and the effect of rubber matrix is to make diaphragm to have good sealing property.No matter be that yarn breakage or rubber layer in the base cloth destroys, the diaphragm destroyed just might bring security incident as long as gas leakage is just thought.The pressure regulator rubber diaphragm is the security component of the key in the gas pressure regulator, governor, and whether it leaks gas is directly connected to the safety of people's life and property.
At present, to the investigative technique comparative maturity of pressure regulator rubber diaphragm, but each research and manufacturer are all strictly secret to diaphragm production and detection method, generally externally do not disclose any correlation technique data.At present, the standard of relevant pressure regulator has the EN334 of the European Community, EN278 and DIN DIN standard etc., but does not have the special standard of diaphragm, let alone the method for diaphragm leak detection.China has formulated " city gas pressure regulator rubber diaphragm " (HG 2807-1996) industry standard in 1996, to the pulling strengrth of diaphragm, pull apart elongation, compression set, Shao Er hardness, rebound resilience, flex crack, hot air aging etc. and proposed to explicitly call for.After this, the standard GB 16802-1997 of China has also made relevant regulations in appendix C, D.In order to improve the level of China's pressure regulator, draw close to international advanced standard, come into effect city gas pressure regulator new standard CJ 274-2008 from August 1st, 2008, this standard is except the sizing material hardness to rubber diaphragm claims, and other and GB 16802-1997 are in full accord.Up to the present, no matter be international advanced standard, or the national standard of China and industry standard all do not propose the clear and definite method of inspection to the leak detection of rubber diaphragm.In recent years, ground a lot of rubber institutes such as China Shanghai, Xi'an, Tieling and enterprise drop into a large amount of man power and materials and develop high-performance canvas filler rubber diaphragm, but do not see that so far high-performance pressure regulator diaphragm emerges, and the diaphragm leak hunting method of practical, science and equipment are not seen especially and are used and report.
Summary of the invention:
Goal of the invention of the present utility model is to overcome the shortcoming of prior art and equipment existence, seek to design and provide a kind of pressure regulator simple in structure, easy to use with rubber combined diaphragm leakage detection apparatus, this device mainly by supporting plate, trim ring, rubber gasket, press pincers, tensimeter is formed.
To achieve these goals, agent structure of the present utility model comprises supporting plate, trim ring, diaphragm, draft tube, tensimeter and presses pincers; Be shaped on respectively above the rigidity supporting plate two side ends that metal material is made and press pincers, the pinching end that presses pincers is stuck on the rigidity ring type trim ring, and the inside circumference diameter of trim ring is less than the neighboring diameter of tested diaphragm; The string cellular type is shaped on draft tube on all sides of supporting plate, the air intake opening place of draft tube is shaped on tensimeter, the draft tube string is crossed the air admission hole that supporting plate middle layer inclined feeds the tested membrane covered place of supporting plate upper side, to realize to charging into gases at high pressure or fluid in the space between tested diaphragm and the supporting plate, bore respectively according to the size difference of tested diaphragm on the supporting plate upper side and be shaped on stationary pinch pincers screw, so that flexible is pressed the fixed position of pincers.
Structural principle of the present utility model is: trim ring with press pincers and match diaphragm is fixed on the supporting plate, make diaphragm between supporting plate, form an airtight cavity, pressurized air is sent into this closed cavity by air inlet, diaphragm is heaved, on diaphragm, brush leak detection liquid then, if the porose gas leakage of diaphragm promptly blows afloat bubble at air-leak section, usually such diaphragm is promptly as waste product, thereby can ensure the quality of the finished product that dispatches from the factory; Supporting plate plays holding diaphragm, stationary pinch pincers, for fixing diaphragm, should on supporting plate, bore and be shaped in order to fix 6～12 stationary pinch pincers screws, in order on a supporting plate, to check the diaphragm of more specifications as much as possible, and use same air admission hole, and preventing that pincers fixing threaded hole layout is improper to cause gas leakage because of pressing, the position of screw should be designed; Press pincers and be used for to trim ring pressurization, and by trim ring with diaphragm being fixed on the supporting plate tightly, it can be lever-type pressing pincers, also can be four link type, or the screw spiral formula, realizes the effect of stepping up to diaphragm; Leak detection liquid adopts water or suds or special-purpose leak detection liquid, pressurized air can be used air compressor machine, or provide with inflator, the tensimeter detected air pressure, can be pointer, also can be digital, the pressure control of general terminal pressure regulator be at 0.02～0.4Mpa, and the pressure control of middle-end pressure regulator is at 0.4～1.2Mpa.
Detection step of the present utility model is: the selected earlier diaphragm that detects, according to the selected trim ring model of diaphragm specification; Install again and press pincers; Check impermeability then, step up diaphragm by pressing pincers, trim ring, rubber gasket, and diaphragm inflated, valve-off when pressure reaches the diaphragm working pressure, the observed pressure table, internal pressure did not have significant change that the device good airproof performance then is described in 5 minutes, thereby detected test, the force value then reply that obviously descends is pressed device such as pincers grade and is debugged, and does air-tight test again and finally reach testing requirements; Carry out official test at last, diaphragm is inflated, when reaching working pressure diaphragm is smeared leak detection liquid, membrane surface produces as no bubble that then this diaphragm air tight test is qualified, as membrane surface occur bubble then this diaphragm be defective goods, diaphragm is defective.
The utility model compared with prior art has the following advantages: the one, be widely used, and can realize check to the plurality of specifications diaphragm, simple in equipment has been saved inspection cost greatly when saving the space; The 2nd, practicality is good, has simplified experimental procedure, has saved man-hour again, and the loading and unloading diaphragm is fast and simple, has improved work efficiency greatly; The 3rd, intuitive is strong, reliability is high, has remedied because of the staff works to neglect the omission that causes.
Description of drawings:
Fig. 1 is the utility model structural principle constructed profile.
Fig. 2 is the utility model leak detection example schematic.
Embodiment:
Also be described further in conjunction with the accompanying drawings below by embodiment.
Agent structure of the present utility model comprises supporting plate 1, trim ring 2, diaphragm 3, draft tube 4, tensimeter 5 and presses pincers 6; Be shaped on respectively above rigidity supporting plate 1 two side ends that metal material is made and press pincers 6, the pinching end that presses pincers 6 is stuck on the rigidity ring type trim ring 2, and the inside circumference diameter of trim ring 2 is less than the neighboring diameter of tested diaphragm 3; The string cellular type is shaped on draft tube 4 on supporting plate 1 all sides, the air intake opening place of draft tube 4 is shaped on tensimeter 5, draft tube 4 was gone here and there the middle layer inclined of supporting plate 1 and was fed the air admission hole of tested diaphragm 3 coverings place of supporting plate 1 upper side, to realize to charging into gases at high pressure or fluid in the space between tested diaphragm 3 and the supporting plate 1, bore respectively according to the size difference of tested diaphragm 3 on supporting plate 1 upper side and be shaped on stationary pinch pincers screw, so that flexible is pressed the fixed position of pincers 6.
Embodiment 1: be applicable to the test of DN25 balance diaphragm.
Selecting commercially available balance diaphragm diameter is 50mm, and measuring air pressure is 1.2Mpa.
During test, the verifying attachment impermeability, detect qualified after, diaphragm is tested.Inflation, smear leak detection liquid, observation, qualified when defective (be considered as useless part), clean, dry, deposit.
Embodiment 2: be applicable to the test of NORVAL/G DVGW pressure regulator homophony diaphragm.
Selecting commercially available balance diaphragm diameter is 630mm, and measuring air pressure is 0.12Mpa.
During measurement, the verifying attachment impermeability, detect qualified after, diaphragm is tested.Inflation, smear leak detection liquid, observation, qualified when defective (be considered as useless part), clean, dry, deposit.
Claims (1)
1, a kind of rubber matrix pressure regulator diaphragm leakage detection apparatus, agent structure comprises supporting plate, trim ring, diaphragm, draft tube, tensimeter and presses pincers; It is characterized in that being shaped on respectively above the rigidity supporting plate two side ends that metal material makes and press pincers, the pinching end that presses pincers is stuck on the rigidity ring type trim ring, and the inside circumference diameter of trim ring is less than the neighboring diameter of tested diaphragm; The string cellular type is shaped on draft tube on all sides of supporting plate, and the air intake opening place of draft tube is shaped on tensimeter, and the draft tube string is crossed the air admission hole that supporting plate middle layer inclined feeds the tested membrane covered place of supporting plate upper side, bores on the supporting plate upper side to be shaped on stationary pinch pincers screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202251080U CN201331419Y (en) | 2008-11-30 | 2008-11-30 | Leakage detector for rubber-based membrane used for pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202251080U CN201331419Y (en) | 2008-11-30 | 2008-11-30 | Leakage detector for rubber-based membrane used for pressure regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331419Y true CN201331419Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202251080U Expired - Fee Related CN201331419Y (en) | 2008-11-30 | 2008-11-30 | Leakage detector for rubber-based membrane used for pressure regulator |
Country Status (1)
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| CN (1) | CN201331419Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297748A (en) * | 2010-06-25 | 2011-12-28 | 中国科学院大连化学物理研究所 | Leakage testing device for film and testing method |
| CN108051160A (en) * | 2018-01-02 | 2018-05-18 | 吉林大学 | A kind of vacuum cup sealing propertytest testing stand |
| CN108058004A (en) * | 2017-12-01 | 2018-05-22 | 中船重工鹏力（南京）智能装备系统有限公司 | A kind of automatic assembling apparatus of gauge table diaphragm unit |
| CN108644795A (en) * | 2018-05-31 | 2018-10-12 | 安徽中疆环境科技有限公司 | A kind of environmental project waste gas treatment equipment |
| CN109781354A (en) * | 2018-04-04 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of embankment seepage undersea detection system based on flow velocity induction |
-
2008
- 2008-11-30 CN CNU2008202251080U patent/CN201331419Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297748A (en) * | 2010-06-25 | 2011-12-28 | 中国科学院大连化学物理研究所 | Leakage testing device for film and testing method |
| CN108058004A (en) * | 2017-12-01 | 2018-05-22 | 中船重工鹏力（南京）智能装备系统有限公司 | A kind of automatic assembling apparatus of gauge table diaphragm unit |
| CN108058004B (en) * | 2017-12-01 | 2023-08-01 | 中船重工鹏力（南京）智能装备系统有限公司 | Automatic assembly device of gauge diaphragm assembly |
| CN108051160A (en) * | 2018-01-02 | 2018-05-18 | 吉林大学 | A kind of vacuum cup sealing propertytest testing stand |
| CN108051160B (en) * | 2018-01-02 | 2019-12-20 | 吉林大学 | Vacuum chuck leakproofness testing platform |
| CN109781354A (en) * | 2018-04-04 | 2019-05-21 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of embankment seepage undersea detection system based on flow velocity induction |
| CN108644795A (en) * | 2018-05-31 | 2018-10-12 | 安徽中疆环境科技有限公司 | A kind of environmental project waste gas treatment equipment |
| CN108644795B (en) * | 2018-05-31 | 2020-11-24 | 安徽中疆环境科技有限公司 | Exhaust-gas treatment equipment for environmental engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20101130 |