CN204988643U - Sealing washer gas tightness detection device - Google Patents

Sealing washer gas tightness detection device Download PDF

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Publication number
CN204988643U
CN204988643U CN201520692245.5U CN201520692245U CN204988643U CN 204988643 U CN204988643 U CN 204988643U CN 201520692245 U CN201520692245 U CN 201520692245U CN 204988643 U CN204988643 U CN 204988643U
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China
Prior art keywords
ring seal
cavity
detection device
tightness detection
vacuum plant
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CN201520692245.5U
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Chinese (zh)
Inventor
赵宇明
刘宇
成勇
张欣
骆虎
黄荣辉
姚森敬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Power Supply Bureau Co Ltd
Original Assignee
Shenzhen Power Supply Bureau Co Ltd
Xian High Voltage Apparatus Research Institute Co Ltd
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Priority to CN201520692245.5U priority Critical patent/CN204988643U/en
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Abstract

The utility model discloses a sealing washer gas tightness detection device, include: the leak hunting device, it includes first cavity, top fastening flange and end fastening flange, the sealing washer simulation installation device of setting in first cavity, it is including a jar body, the mounting flange that is linked together with the jar body, first inflation inlet that is linked together with the jar body and the barometer that is linked together with the jar body, vacuum apparatus, it includes the second cavity, second inflation inlet that is linked together with the second cavity and the density sensor who is linked together with the second cavity, and set up the gaseous connecting pipe between leak hunting device and vacuum apparatus, solenoid valve in succession on the gaseous connecting pipe. The utility model also discloses a sealing washer gas tightness detection method. Implement the utility model discloses a sealing washer gas tightness detection device can carry out quantitative determination to the gas tightness of sealing washer, realizes the self test and the warning of testing process, has improved the detection rate of accuracy, the structure is retrencied, simple operation, easily monitoring cost.

Description

A kind of O-ring seal air-tightness detection device
Technical field
The utility model relates to air-leakage test field, particularly relates to a kind of O-ring seal air-tightness detection device.
Background technology
In prior art, O-ring seal is normally based on extrusion pressing type sealing principle.Particularly, such as: after crush seal circle generation elastic deformation, sealing contact surface causes contact, contact is greater than the interior pressure of sealed medium, then do not leak, otherwise then leak.
Carrying out air-leakage test to O-ring seal, is a kind of effective means of O-ring seal key property research.By to the bubble-tight inspection of O-ring seal after aging test, coordinate with the research of O-ring seal aging test, the direct rule of O-ring seal serviceable life and gas leakage can be obtained; Before use air-leakage test is carried out to the O-ring seal after long-term leaving standstill, can its performance after storage of Timeliness coverage good and bad, to judge whether its operating mode is suitable for.
Present stage, for the air tightness test of O-ring seal, leak locator is utilized to test often, result only can qualitative embodiment its whether leak gas, can not to its leak rate quantitatively characterizing, cannot obtain the critical index such as year leak rate, and quantitatively to detect be the very important link of O-ring seal performance test; Meanwhile, existing method of testing, all cannot realize, from judging and warning function, cannot realizing the transmission of data and host computer.Need a kind of proving installation, meet above-mentioned requirements.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of O-ring seal air-tightness detection device, quantitatively can detect the air-tightness of O-ring seal, realizes Autonomous test and the warning of testing process, improves Detection accuracy; Structure is simplified, simple operation, is easy to control cost.
In order to solve the problems of the technologies described above, embodiment of the present utility model provides a kind of O-ring seal air-tightness detection device, in order to quantitatively to detect the air-tightness of O-ring seal, comprise: leakage detection apparatus, leakage detection apparatus comprises the first cavity and enclosing and is sealed in top clamp flange and the end clamp flange of the ends of the first cavity; Be arranged on the O-ring seal simulation erecting device in the first cavity, O-ring seal simulation erecting device comprises: the tank body that can hold a certain amount of search gas, be connected with tank body in order to the mounting flange of fastening O-ring seal to be detected, be connected with tank body fill the first inflation inlet of search gas and be connected to characterize the rain glass of charge pressure with tank body; Vacuum plant, vacuum plant comprises the second cavity, is connected in order to the second inflation inlet of vacuumizing the second cavity and the density sensor being connected to record gas concentration in the second cavity with the second cavity with the second cavity; And the gas connection pipe be arranged between leakage detection apparatus and vacuum plant, in succession in order to control between leakage detection apparatus and vacuum plant the solenoid valve of whether conducting on gas connection pipe, wherein: according to the ON operation time of solenoid valve, the concentration of search gas in the vacuum plant of density sensor record, obtain O-ring seal to be detected year leak rate data message.
Wherein, also comprise: in order to the host computer of search gas concentration data in the vacuum plant of collection density sensor record, density sensor is connected with host computer.
Wherein, the opposite end of gas connection pipe is connected to leakage detection apparatus and vacuum plant respectively by a Self-sealing valve.
Wherein, also comprise: in order to the time relay of Controlling solenoid valve opening/closing time, the time relay is connected with solenoid valve.
Wherein, the first inflation inlet and the second inflation inlet screw respectively be provided with dust cap.
Wherein, the first cavity is the hollow cylindrical structure that two ends are provided with opening, its openend is offered multiple pilot hole in order to connect top clamp flange and end clamp flange.
Wherein, rain glass and density sensor can be changed according to the type of search gas.
Implement O-ring seal air-tightness detection device provided by the utility model, there is following beneficial effect:
The first, gas leakage can be carried out for O-ring seal and detect, accurately judge its working condition, realize Autonomous test and the warning of testing process, improve Detection accuracy.
Second, can according to the ON operation time of solenoid valve, the concentration of search gas in the vacuum plant of density sensor record, obtain O-ring seal to be detected year leak rate data message, simultaneously, can carry out going deep into computing for value, obtain more evaluation index, for the performance study of O-ring seal, reliability consideration provide effective scheme.
3rd, structure is simplified, simple operation, is easy to control cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the external structure schematic diagram of the utility model embodiment O-ring seal air-tightness detection device.
Fig. 2 is the perspective view of the utility model embodiment O-ring seal air-tightness detection device.
Fig. 3 is the sectional structure schematic diagram of the leakage detection apparatus of the utility model embodiment O-ring seal air-tightness detection device.
Fig. 4 is the structural representation of the O-ring seal simulation erecting device of the utility model embodiment O-ring seal air-tightness detection device.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Shown in Fig. 1-Fig. 4, it is the embodiment one of the utility model O-ring seal air-tightness detection device.
O-ring seal air-tightness detection device in the present embodiment, in order to quantitatively to detect the air-tightness of O-ring seal, specifically comprises: the simulation of leakage detection apparatus 1, O-ring seal erecting device 2, vacuum plant 3 and gas connection pipe 4.Introduce the structure of every part, composition and principle of work thereof below in detail.
Leakage detection apparatus 1 comprises the first cavity 11 and enclosing and is sealed in top clamp flange 12 and the end clamp flange 13 of the ends of the first cavity 11.First cavity 11 is hollow columnar structures that two ends are provided with opening, its upper and lower opening end extends the annular connected unit (not shown) in order to assembly connection respectively, connected unit is offered multiple pilot hole in order to connect top clamp flange 12 and end clamp flange 13.Structure, the shape of top clamp flange 12 and end clamp flange 13 are roughly the same, in tabular.Two clamp flanges are offered respectively the screw with above-mentioned connected unit with the corresponding coupling in pilot hole position.During enforcement, top clamp flange 12 and end clamp flange 13 enclosing be sealed in the ends of the first cavity 11 respectively, makes the first cavity 11 become confined space.By arranging the hermetically-sealed construction of top clamp flange 12 and end clamp flange 13, itself and the sealing of the first cavity 11 in junction can be ensured.
Preferably, push up clamp flange 12 and be provided with the interface be connected with the first cavity 11, in order to connect gas connection pipe 4.
O-ring seal simulation erecting device 2 is placed in the first cavity 11 when testing, it comprises the tank body 21 that can hold a certain amount of search gas, be connected with tank body 21 in order to the mounting flange 22 of fastening O-ring seal to be detected, be connected with tank body 21 fill the first inflation inlet 23 of search gas and be connected to characterize the rain glass 24 of charge pressure with tank body 21.
Preferably, the first inflation inlet 23 is protected to screw dust cap (not shown), with the serviceable life of extension device in a non-operative state.
Vacuum plant 3 comprises the second cavity 31, is connected in order to the second inflation inlet 32 of vacuumizing the second cavity 31 and the density sensor 33 being connected to record gas concentration in the second cavity 31 with the second cavity 31 with the second cavity 31.
Preferably, the second inflation inlet 32 is protected to screw dust cap (not shown), with the serviceable life of extension device in a non-operative state.
Gas connection pipe 4 is arranged between leakage detection apparatus 1 and vacuum plant 3.During concrete enforcement, in succession in order to control between leakage detection apparatus 1 and vacuum plant 3 solenoid valve 5 of whether conducting on gas connection pipe 4, wherein: the concentration of search gas in the vacuum plant 3 that can record according to the ON operation time of solenoid valve 5 and density sensor 33, obtain O-ring seal to be detected year leak rate data message.
Preferably, the opposite end of gas connection pipe 4 is connected to leakage detection apparatus 1 and vacuum plant 3 respectively by a Self-sealing valve 6, wherein: Self-sealing valve 6 mainly plays the function strengthening sealing.
Preferably, also comprise: the host computer (not shown) of search gas concentration data in the vacuum plant 3 recorded in order to collection density sensor 33, density sensor 33 is connected with host computer, and its effect is: record the data message that also analytic density sensor 33 is uploaded.
Preferably, also comprise: in order to the time relay (not shown) of Controlling solenoid valve 5 opening/closing time, the time relay is connected with solenoid valve 5, its effect is the opening/closing time of Controlling solenoid valve 5, to carry out deep reckoning for value.
In the specific implementation, with SF6 gas for search gas object, O-ring seal to be detected is O type circle is example to O-ring seal air-tightness detection device in the present embodiment, and its Cleaning Principle is described.
First, mounting O-shaped rings is on the mounting flange 22 on O-ring seal simulation erecting bed 2, and the tank body 21 of then O-ring seal being simulated erecting bed 2 vacuumizes, and is filled with the SF6 gas of certain pressure.To install and completely charged O-ring seal simulation erecting bed 2 entirety puts into the first cavity 11 of leakage detection apparatus 1, respectively at upper and lower opening end fastening top clamp flange 12 and the end clamp flange 13 respectively of leakage detection apparatus 1 first cavity 11, ensure two clamp flanges and the sealing of the first cavity 11 in junction.And then, the opposite end of gas connection pipe 4 is connected to leakage detection apparatus 1 and vacuum plant 3 respectively by a Self-sealing valve 6, is evacuated to the front setting of examination to vacuum plant 3 simultaneously.Subsequently, packing density sensor 33 is connected to vacuum plant 3, simultaneously Connection Density sensor 33 and to host computer, solenoid valve 5 is connected with the time relay, the working time of solenoid valve 5 is set, opens solenoid valve, start to test.Owing to forming strong pressure differential between leakage detection apparatus 1 and vacuum plant 3, the gas that mounting flange 22 place that O-ring seal can be impelled to simulate erecting device 2 leaks all flows to vacuum plant 3 due to the existence of pressure gradient.
Finally, when solenoid valve 5 arrives the assigned work time, solenoid valve 5 cuts out automatically, and density sensor 33 records the concentration of SF6 gas in vacuum plant 3.After off-test, the gas leakage concentration of SF6 gas can be monitored according to the concentration of the SF6 gas of density sensor 33 record, judge whether mounting flange 22 place leaks gas.In addition, utilize the concentration value that this density sensor 33 records, in conjunction with the working time of solenoid valve 5, the year leak rate of tested O-ring seal can be extrapolated, and then its serviceable life is assessed.
In other embodiment of the utility model O-ring seal air-tightness detection device, O-ring seal to be detected can be the O-ring seal of other shape except above-mentioned O RunddichtringO or structure, such as special-shaped seal ring, only needs the hermetically-sealed construction of the mounting flange 22 redesigning O-ring seal simulation erecting bed 2 during enforcement.Search gas also can be other gas except above-mentioned SF6 gas, if need hunt leak to other types gas during enforcement, then only need change the rain glass 24 suitable with designated gas type and density sensor 33.
Implement the O-ring seal air-tightness detection device of the utility model embodiment, there is following beneficial effect:
The first, gas leakage can be carried out for O-ring seal and detect, accurately judge its working condition, realize Autonomous test and the warning of testing process, improve Detection accuracy.
Second, can according to the ON operation time of solenoid valve, the concentration of search gas in the vacuum plant of density sensor record, obtain O-ring seal to be detected year leak rate data message, simultaneously, can carry out going deep into computing for value, obtain more evaluation index, for the performance study of O-ring seal, reliability consideration provide effective scheme.
3rd, structure is simplified, simple operation, is easy to control cost.

Claims (7)

1. an O-ring seal air-tightness detection device, in order to quantitatively to detect the air-tightness of O-ring seal, is characterized in that, comprising:
Leakage detection apparatus, described leakage detection apparatus comprises the first cavity and enclosing and is sealed in top clamp flange and the end clamp flange of the ends of described first cavity;
Be arranged on the O-ring seal simulation erecting device in described first cavity, described O-ring seal simulation erecting device comprises: the tank body that can hold a certain amount of search gas, be connected with described tank body in order to the mounting flange of fastening O-ring seal to be detected, be connected to fill the first inflation inlet of search gas with described tank body and be connected to characterize the rain glass of charge pressure with described tank body;
Vacuum plant, described vacuum plant comprises the second cavity, is connected in order to the second inflation inlet of vacuumizing described second cavity and the density sensor being connected to record gas concentration in described second cavity with described second cavity with described second cavity; And
Be arranged on the gas connection pipe between described leakage detection apparatus and described vacuum plant, in succession in order to control between described leakage detection apparatus and described vacuum plant the solenoid valve of whether conducting on described gas connection pipe, wherein:
According to the ON operation time of described solenoid valve, the concentration of search gas in the described vacuum plant of described density sensor record, obtain O-ring seal to be detected year leak rate data message.
2. O-ring seal air-tightness detection device as claimed in claim 1, is characterized in that, also comprise: in order to collect described density sensor record described vacuum plant in the host computer of search gas concentration data, described density sensor is connected with described host computer.
3. O-ring seal air-tightness detection device as claimed in claim 1, it is characterized in that, the opposite end of described gas connection pipe is connected to described leakage detection apparatus and described vacuum plant respectively by a Self-sealing valve.
4. O-ring seal air-tightness detection device as claimed in claim 1, is characterized in that, also comprise: in order to control the time relay of described solenoid valve opening/closing time, the described time relay is connected with described solenoid valve.
5. O-ring seal air-tightness detection device as claimed in claim 1, is characterized in that, described first inflation inlet and described second inflation inlet screws respectively and is provided with dust cap.
6. O-ring seal air-tightness detection device as claimed in claim 1, it is characterized in that, described first cavity is the hollow cylindrical structure that two ends are provided with opening, its openend is offered multiple pilot hole in order to connect described top clamp flange and clamp flange of the described end.
7. O-ring seal air-tightness detection device as claimed in claim 1, it is characterized in that, described rain glass and described density sensor can be changed according to the type of search gas.
CN201520692245.5U 2015-09-08 2015-09-08 Sealing washer gas tightness detection device Active CN204988643U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520692245.5U CN204988643U (en) 2015-09-08 2015-09-08 Sealing washer gas tightness detection device

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Application Number Priority Date Filing Date Title
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Publications (1)

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CN204988643U true CN204988643U (en) 2016-01-20

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092164A (en) * 2015-09-08 2015-11-25 深圳供电局有限公司 Air tightness detection method of seal ring and detection device thereof
CN105890847A (en) * 2016-06-16 2016-08-24 江苏永尚能源科技有限公司 Sealing piece leak detecting device
WO2020151367A1 (en) * 2019-01-21 2020-07-30 山东科技大学 Simulated comprehensive test system for gas sealing performance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105092164A (en) * 2015-09-08 2015-11-25 深圳供电局有限公司 Air tightness detection method of seal ring and detection device thereof
CN105890847A (en) * 2016-06-16 2016-08-24 江苏永尚能源科技有限公司 Sealing piece leak detecting device
WO2020151367A1 (en) * 2019-01-21 2020-07-30 山东科技大学 Simulated comprehensive test system for gas sealing performance

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20210918

Address after: 518000 electric power dispatching and communication building, 4020 Shennan East Road, Luohu District, Shenzhen, Guangdong

Patentee after: SHENZHEN POWER SUPPLY BUREAU Co.,Ltd.

Address before: 518000 electric power dispatching and communication building, 4020 Shennan East Road, Luohu District, Shenzhen, Guangdong

Patentee before: SHENZHEN POWER SUPPLY BUREAU Co.,Ltd.

Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd.

TR01 Transfer of patent right