CN103217260A - Plastic valve pressure testing device - Google Patents
Plastic valve pressure testing device Download PDFInfo
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- CN103217260A CN103217260A CN2013100569709A CN201310056970A CN103217260A CN 103217260 A CN103217260 A CN 103217260A CN 2013100569709 A CN2013100569709 A CN 2013100569709A CN 201310056970 A CN201310056970 A CN 201310056970A CN 103217260 A CN103217260 A CN 103217260A
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- tracheae
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- air bag
- pressure testing
- testing device
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Abstract
The invention discloses a plastic valve pressure testing device. The plastic valve pressure testing device does not damage an original structure of a valve and is needless of other media to test the valve. The plastic valve pressure testing device comprises an air pipe and an air bag. The air pipe comprises an inner air pipe and an outer air pipe, the length of the inner air pipe is larger than the length of the outer air pipe, the inner air pipe is arranged in the outer air pipe, two ends of the outer air pipe are sealed, one end of the inner air pipe is provided with an inner air inlet, and the other end of the inner air pipe is provided with an inner air outlet. The inner air inlet is provided with an inner control valve, an outer air inlet is arranged at one end, close to the inner air inlet, of the outer air pipe, and an outer control valve is arranged on the outer air inlet. The air bag is arranged on the side face of the outer air pipe, a plurality of through holes are arranged in the contacting face of the outer air pipe and the air bag, and the outer air pipe is communicated with the air bag through the through holes. The plastic valve pressure testing device has the advantages that the original structure of the valve can not be damaged, working efficiency is high, operating is convenient, mounting and dismounting are convenient and quick, and the sealing property is good.
Description
Technical field
The present invention relates to a kind of pressure testing device, refer in particular to a kind of Plastic valve pressure testing device.
Background technology
Valve is in fluid system, is used for controlling direction, the pressure of fluid, the device of flow.Valve is the device that pipe arrangement and the interior medium (liquid, gas, powder) of equipment is flowed or stop and controlling its flow.Valve is a control assembly in the pipeline fluid delivery system, and it is to be used for changing path section and media flow direction, has water conservancy diversion, by functions such as, throttling, non-return, shunting or overflow releases.Valve can be used for controlling all kinds fluid ground such as water, steam, oil product, gas, mud, various Korrosionsmedium, liquid metal and radioactive fluid and flows, the working pressure of valve can be from 0.0013MPa to 1000MPa UHV (ultra-high voltage), working temperature is from the high temperature of-269 ℃ ultralow temperature to 1430 ℃.The control of valve can be adopted the multiple kind of drive, can be under the effect of pressure, temperature or other form transducing signal, by predetermined requirement action, perhaps do not rely on transducing signal and simply open or close, valve rely on to drive or automechanism makes opening and closing element do lifting, slippage, swing or gyration, thereby the size that changes its flow area is to realize its control function.
The sealing of valve is to weigh the important indicator of valve function and quality, refers to the internal and outernal leakage situation of valve under specified test condition.The normal operation of device in the serious threat of valves leakage problem, and operating valve is difficult to discovery again whether interior leakage is arranged, and investigation result shows leakage problem in various valves that each petroleum chemical enterprise uses the existing in various degree.Its reason has the sealing surface material of valve plate, valve seat not meet request for utilization, and machining precision is not enough, and the valve plate of gate valve, the angle of wedge of valve seat do not match, sealing surface width differs, and the goodness of fit is poor, and flashboard is not in place, closes the factor of not waiting indefinitely.Job specifications requires Plastic valve should carry out just can using after pressure testing and the experiments of sealing performance, because the anti-extrusion ability of the relative steel valve of Plastic valve, characteristics such as changeableness, so when Plastic valve is carried out the pressure testing test, generally all adopt closing valve one end, carry out the pressure testing test by the valve other end, operation often needs to destroy to a certain extent the valve connectivity port like this, and the sealing that need test valve by other media, to finish valve pressure testing test.
Chinese patent Granted publication number: CN 201121706Y, September 24 2008 Granted publication day, a kind of gasbag-type mechanically-sealing apparatus is disclosed, its technical scheme is at the main shaft peripheral hardware mechanically-sealing apparatus to be arranged, described mechanically-sealing apparatus is mainly by can, pneumatophore and pad are formed, be provided with the air sac sealing cavity at described can along the axial direction of main shaft, one side of can is provided with the duct that communicates with the air sac sealing cavity, install the pneumatophore that matches with cavity in the air sac sealing cavity, the outer end of can is by pad and gland nut fixed air utricule, and pneumatophore closely contacts under air pressure with main shaft.The weak point of this utility model is that this mechanically-sealing apparatus need be installed on the machine case by screw and pad, and such packoff will destroy original machine construction, and dismounting is inconvenient.
Summary of the invention
The present invention destroys the structure of original valve and the deficiency that need test valve by other media in order to overcome the prior art packoff, provides a kind of and has not destroyed the valve original structure and need not the Plastic valve pressure testing device that other media are tested valve.
To achieve these goals, the present invention is by the following technical solutions:
A kind of Plastic valve pressure testing device, comprise tracheae and air bag, tracheae and outer tracheae in described tracheae comprises, length of trachea is greater than outer length of trachea in described, tracheae places outer tracheae in described, described outer tracheae closed at both ends, tracheae one end is interior air intake opening in described, the other end is interior gas outlet, and described interior air intake opening is provided with the inner control valve, and described outer tracheae is provided with the external admission mouth near an end of interior air intake opening, described external admission mouth is provided with outer operation valve, described air bag is installed on the side of outer tracheae, and the face that described outer tracheae contacts with air bag is provided with some through holes, and described outer tracheae is communicated with air bag by through hole.
At first, this device is placed respectively in two ports of Plastic valve, insert source of the gas on the external admission mouth of tracheae outside, open outer operation valve, gas enters among the air bag through the through hole on the outer tracheae, and air bag begins inflation, reaches tightly the fit inwall of valve port of air bag after the certain pressure, form a sealing surface, close outer operation valve; Afterwards, source of the gas is received on the interior air intake opening of interior tracheae, open the inner control valve, gas directly enters into valve body inside through interior tracheae, because the valve two ends seal, so valve body inside is a sealed cavity, close the inner control valve when charging into gas after reaching certain pressure, detect valve and have or not problems such as distortion and leakage; At last after work pressure test is finished, only need open the inner control valve earlier emits the valve body gas inside, after open outer operation valve the gas among the air bag emitted, promptly this device can be gone out take out from the valve two-port, the design air bag can not destroy the original structure of valve as the device of valve port temporary sealing like this, directly the valve body inner inflatable is tested by interior tracheae in addition, high efficiency and easy to operate has reached and has not destroyed the valve original structure and need not the purpose that other media are tested valve.
As preferably, described outer tracheae side is provided with two deflector aprons, described air bag places between two deflector aprons, when air bag begins to inflate, air bag is under the effect of both sides deflector apron, and air bag can only circumferential expansion, forms and circumferentially presses close to power, the high some beginning of air bag circumferential expansion is convenient to can tightly the fit inwall of valve port of air bag.
As preferably, angle between described two deflector aprons be 5 spend to 10 the degree, the effect of deflector apron inclination can be played the contact area of augmented airbag and valve port inner wall, augmented airbag is in the packing surface of valve port, thereby the friction force between effective augmented airbag and the valve port inner wall, prevent when the valve body inner inflatable, air bag is extrapolated because the valve body air pressure inside increases.
As preferably, the surface of described air bag is provided with ripple glaze, friction force between effective augmented airbag and the valve port inner wall, if valve two-port inboard is provided with the internal thread valve two-port inwall of can better tightly fitting, prevent when the valve body inner inflatable, air bag is extrapolated because the valve body air pressure inside increases.
As preferably, also comprise spacing base, described spacing base comprises two base baffles and length-adjustable base plate, described two base baffles vertically place the two ends of base plate respectively, when to the valve body inner inflatable, the valve body air pressure inside increases might be with air bag toward extrapolation, can be effectively that the air bag that is installed in the valve two-port is spacing in the valve two-port by base baffle.
As preferably, described base baffle be shaped as spill, design is by the installation and removal fast of the groove on the base baffle like this.
As preferably, described base plate comprises first base plate and second base plate, described first base plate is provided with chute, described second base plate is provided with the slide rail corresponding with chute, described chute is provided with lock screw, can carry out suitable adjustment according to the size of Plastic valve, simple in structure, easy to operate.
As preferably, described air bag and outer tracheae are one, the sealing between raising air bag and the outer tracheae, thus improve this device to test result's accuracy.
The invention has the beneficial effects as follows: air bag can not destroy the original structure of valve as the device of valve port temporary sealing; Directly the valve body inner inflatable is tested high efficiency and easy to operate by interior tracheae; Simple in structure, installation and removal are convenient and swift, good seal performance.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of spacing base;
Fig. 3 is a fundamental diagram of the present invention.
Among the figure: 1. air bag, 2. in tracheae, 3. outer tracheae, 4. interior air intake opening, 5. interior gas outlet, 6. inner control valve, 7. external admission mouth, 8. outer operation valve, 9. through hole, 10. deflector apron, 11. base plate, 12. base baffles, 13. first base plates, 14. second base plate, 15. chutes, 16. slide rails, 17. lock screw, 18. spacing bases, 19. valves.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Among the embodiment as described in Figure 1, a kind of Plastic valve pressure testing device, comprise tracheae, air bag 1 and spacing base 18, tracheae 2 and outer tracheae 3 in wherein tracheae comprises, the length of interior tracheae 2 is greater than the length of outer tracheae 3, interior tracheae 2 places outer tracheae 3, outer tracheae 3 closed at both ends, interior tracheae 2 one ends are interior air intake opening 4, the other end is interior gas outlet 5, interior air intake opening 4 is provided with inner control valve 6, outer tracheae 3 is provided with external admission mouth 7 near an end of interior air intake opening 4, external admission mouth 7 is provided with outer operation valve 8, air bag 1 is installed on the side of outer tracheae 3, air bag 1 and outer tracheae 3 are one, the face that outer tracheae 3 contacts with air bag 1 is provided with some through holes 9, outer tracheae 3 is communicated with air bag 1 by through hole 9, outer tracheae 3 sides are provided with two deflector aprons 10, air bag 1 places between two deflector aprons 10, angle between two deflector aprons 10 is 5 to spend to 10 degree, spacing base 18 comprises that two base baffles 12 and 11, two base baffles 12 of length-adjustable base plate vertically place the two ends of base plate 11 respectively, and wherein base baffle 12 is one with base plate 11.Base baffle 12 be shaped as spill, base plate 11 comprises that first base plate 13 and second base plate, 14, the first base plates 13 are provided with chute 15, the second base plates 14 and are provided with the slide rail 16 corresponding with chute 15, chute 15 is provided with lock screw 17.Wherein: the radius of deflector apron 10 is less than the internal diameter of valve 19 ports, design is when air bag 1 is tightly fitted valve 19 port inner walls like this, air bag 1 has part to be expressed into the outside of deflector apron 10, form similarly " flange ", when gas when valve 19 body interior are injected, can make the air bag 1 and the inwall of valve 19 ports better fit by this similar " flange ", also make air bag 1 be difficult for by the gas pressure of valve 19 body interior and toward extrapolation.
Its principle of work is as follows: the inside of this device being filled in valve 19 two-port, then whole valve 19 is put on the spacing base 18, wherein spacing base 18 can make it just can snap fit onto the two ends of valve 19 according to the set nut 17 on the length adjustment base plate 11 of valve 19, tracheae just snaps fit onto in the groove of base baffle 12, external admission mouth 7 inserts and adds source of the gas, open outer operation valve 8, gas enters into air bag 1 through outer tracheae 3 and by the through hole 9 on the outer tracheae 3, air bag 1 begins inflation, air bag 1 is under the effect of two ends deflector apron 10, air bag 1 can only circumferential expansion, form and circumferentially press close to power, air bag 1 high some beginning circumferential expansion, press close to the inwall of valve 19 ports, because the angle between two deflector aprons 10 is 5 to spend to 10 degree, deflector apron 10 effects of inclination can be played the contact area of augmented airbag 1 and valve 19 port inner walls, augmented airbag 1 is in the packing surface of valve 19 port inside, the friction force between augmented airbag 1 and valve 19 port inner walls.After the air bag 1 that is leading to gas reaches certain pressure, close outer operation valve 8, the air bag 1 valve port inner wall of tightly fitting, form a sealing surface, this moment, air bag 1 high some place swell increment was very big, the radial friction resistance is also big herein, simultaneously since the radius of deflector apron 10 less than the internal diameter of valve 19 ports, air bag 1 has part to be expressed into the outside of deflector apron 10, form similarly " flange ", when gas when valve 19 body interior are injected, by this similarly " flange " can make the air bag 1 and the inwall of valve 19 ports better fit, can better help stoping air bag 1 outer moving.Afterwards, interior air intake opening 4 inserts and adds source of the gas, opens inner control valve 6, and valve 19 body interior are inflated, reach the pressure of regulation after, close inner control valve 6.Owing to finished the sealing at valve 19 two ends before, this moment, valve 19 bodies bore the test pressure of regulation, and in the pressurize certain hour, detection valve 19 has or not distortion and leaks.After work pressure test is finished, open inner control valve 6, valve 19 body interior gases are flowed out, open outer operation valve 8 again, the gas in the air bag 1 to be emitted, this device can be taken out in valve 19 ports, and next valve is carried out work pressure test.
Claims (8)
1. Plastic valve pressure testing device, it is characterized in that, comprise tracheae and air bag (1), described tracheae comprises interior tracheae (2) and outer tracheae (3), the length of tracheae (2) is greater than the length of outer tracheae (3) in described, tracheae (2) places outer tracheae (3) in described, described outer tracheae (3) closed at both ends, tracheae (2) one ends are interior air intake opening (4) in described, the other end is interior gas outlet (5), air intake opening (4) is provided with inner control valve (6) in described, described outer tracheae (3) is provided with external admission mouth (7) near an end of interior air intake opening (4), described external admission mouth (7) is provided with outer operation valve (8), described air bag (1) is installed on the side of outer tracheae (3), the face that described outer tracheae (3) contacts with air bag (1) is provided with some through holes (9), and described outer tracheae (3) is communicated with air bag (1) by through hole (9).
2. a kind of Plastic valve pressure testing device according to claim 1 is characterized in that, described outer tracheae (3) side is provided with two deflector aprons (10), and described air bag (1) places between two deflector aprons (10).
3. a kind of Plastic valve pressure testing device according to claim 2 is characterized in that, the angle between described two deflector aprons (10) be 5 spend to 10 the degree.
4. a kind of Plastic valve pressure testing device according to claim 1 and 2 is characterized in that the surface of described air bag (1) is provided with ripple glaze.
5. a kind of Plastic valve pressure testing device according to claim 1, it is characterized in that, also comprise spacing base (18), described spacing base (18) comprises two base baffles (12) and length-adjustable base plate (11), and described two base baffles (12) vertically place the two ends of base plate (11) respectively.
6. a kind of Plastic valve pressure testing device according to claim 5 is characterized in that, described base baffle (12) be shaped as spill.
7. a kind of Plastic valve pressure testing device according to claim 5, it is characterized in that, described base plate (11) comprises first base plate (13) and second base plate (14), described first base plate (13) is provided with chute (15), described second base plate (14) is provided with the slide rail (16) corresponding with chute (15), and described chute (15) is provided with lock screw (17).
8. a kind of Plastic valve pressure testing device according to claim 1 and 2 is characterized in that, described air bag (1) and outer tracheae (3) are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310056970.9A CN103217260B (en) | 2013-02-22 | 2013-02-22 | A kind of Plastic valve pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310056970.9A CN103217260B (en) | 2013-02-22 | 2013-02-22 | A kind of Plastic valve pressure testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103217260A true CN103217260A (en) | 2013-07-24 |
| CN103217260B CN103217260B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310056970.9A Expired - Fee Related CN103217260B (en) | 2013-02-22 | 2013-02-22 | A kind of Plastic valve pressure testing device |
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| Country | Link |
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| CN (1) | CN103217260B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880380A (en) * | 2015-06-11 | 2015-09-02 | 贵州润晋碳元素材料有限公司 | Handheld borehole defect pressurized detection device for thermal-expansion rock splitting agent |
| CN106595980A (en) * | 2016-12-25 | 2017-04-26 | 重庆市永川区益锐机械有限责任公司 | Cylinder block leak point locating and detecting device |
| CN108562401A (en) * | 2018-02-28 | 2018-09-21 | 重庆广福科技有限公司 | Detect the ventable self-seal device of automobile pipeline air-tightness |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1199919A (en) * | 1966-09-23 | 1970-07-22 | Carver & Co Eng | Improvements in and relating to Means for Testing Pipes for Leakage |
| DE2330834A1 (en) * | 1972-06-23 | 1974-03-21 | Steinhauf Herbert | DEVICE FOR TESTING THE LEAK TIGHTNESS OF VALVES ON ALL TIRES |
| US3919880A (en) * | 1971-06-09 | 1975-11-18 | Siemens Ag | Method and apparatus for testing closed-end tubes in heat exchangers of nuclear reactors and the like |
| GB2258735A (en) * | 1991-08-14 | 1993-02-17 | Furmanite Int Ltd | Leak testing device for a valve in a pipeline |
| CN201121706Y (en) * | 2007-10-31 | 2008-09-24 | 郝华民 | Gas bag type mechanical sealing device |
| CN203101001U (en) * | 2013-02-22 | 2013-07-31 | 杭州市特种设备检测院 | Plastic valve pressure testing device |
-
2013
- 2013-02-22 CN CN201310056970.9A patent/CN103217260B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1199919A (en) * | 1966-09-23 | 1970-07-22 | Carver & Co Eng | Improvements in and relating to Means for Testing Pipes for Leakage |
| US3919880A (en) * | 1971-06-09 | 1975-11-18 | Siemens Ag | Method and apparatus for testing closed-end tubes in heat exchangers of nuclear reactors and the like |
| DE2330834A1 (en) * | 1972-06-23 | 1974-03-21 | Steinhauf Herbert | DEVICE FOR TESTING THE LEAK TIGHTNESS OF VALVES ON ALL TIRES |
| GB2258735A (en) * | 1991-08-14 | 1993-02-17 | Furmanite Int Ltd | Leak testing device for a valve in a pipeline |
| CN201121706Y (en) * | 2007-10-31 | 2008-09-24 | 郝华民 | Gas bag type mechanical sealing device |
| CN203101001U (en) * | 2013-02-22 | 2013-07-31 | 杭州市特种设备检测院 | Plastic valve pressure testing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880380A (en) * | 2015-06-11 | 2015-09-02 | 贵州润晋碳元素材料有限公司 | Handheld borehole defect pressurized detection device for thermal-expansion rock splitting agent |
| CN104880380B (en) * | 2015-06-11 | 2017-07-07 | 贵州润晋碳元素材料有限公司 | A kind of hand-held thermal expansion stone cracking agent drilling defects pressure testing device |
| CN106595980A (en) * | 2016-12-25 | 2017-04-26 | 重庆市永川区益锐机械有限责任公司 | Cylinder block leak point locating and detecting device |
| CN106595980B (en) * | 2016-12-25 | 2018-08-17 | 重庆市永川区益锐机械有限责任公司 | Cylinder body leak point positioning detection device |
| CN108562401A (en) * | 2018-02-28 | 2018-09-21 | 重庆广福科技有限公司 | Detect the ventable self-seal device of automobile pipeline air-tightness |
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| Publication number | Publication date |
|---|---|
| CN103217260B (en) | 2015-10-21 |
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Granted publication date: 20151021 Termination date: 20170222 |