CN210037081U - Leak detection device - Google Patents
Leak detection device Download PDFInfo
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- CN210037081U CN210037081U CN201920980701.4U CN201920980701U CN210037081U CN 210037081 U CN210037081 U CN 210037081U CN 201920980701 U CN201920980701 U CN 201920980701U CN 210037081 U CN210037081 U CN 210037081U
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Abstract
The utility model relates to a leak hunting device. The leak detection device is arranged on a leak detector and is used for detecting the air tightness of a part with a first cavity and a plurality of second cavities, and comprises an air tightness instrument, a first air control valve, a first electromagnetic valve, a plurality of second air control valves, a plurality of third air control valves, a plurality of second electromagnetic valves, a plurality of fourth air control valves, a plurality of third electromagnetic valves, an external air source and a central control machine; the first cavity is communicated with the air tightness instrument through a first air control valve; the second cavity is communicated with the air tightness instrument through a second air control valve, is communicated with the outside through a third air control valve, and is communicated with an external air source through a fourth air control valve; the central control machine controls a first pneumatic control valve through a first electromagnetic valve, controls a second pneumatic control valve and a third pneumatic control valve through a second electromagnetic valve, and controls a fourth pneumatic control valve through a third electromagnetic valve. Leak hunting device fill, the gassing time's that has the part cavity of reduction effectively advantage.
Description
Technical Field
The utility model relates to an automobile spare and accessory part detection area especially relates to a leak hunting device.
Background
Referring to fig. 1, fig. 1 is a schematic structural diagram of a leak detection apparatus for detecting a plurality of chambers by using a gas tightness meter. The leakage detecting device comprises an air tightness instrument, a plurality of cavities, a plurality of two-position three-way pneumatic control valves, a plurality of two-position three-way electromagnetic valves and a central control machine. The air tightness instrument is communicated to each cavity through a two-position three-way air control valve, each two-position three-way air control valve is electrically connected with a two-position three-way electromagnetic valve, and the central control machine is electrically connected with all the two-position three-way electromagnetic valves.
The detection process of the leak detection device is as follows: after the machine table is started and the sealing workpiece is pressed, the air tightness instrument inflates one cavity through one two-position three-way air control valve, and the other two-position three-way air control valves disconnect the air tightness instrument from the other cavities, so that the air tightness instrument cannot inflate the other cavities; after the air tightness instrument detects the cavity, stopping inflating the air tightness instrument, and exhausting the cavity after detection through the corresponding two-position three-way air control valve; and finally, the air tightness instrument detects the leakage of the other cavities in sequence.
Although the leak detection device can detect the air tightness of workpieces with a plurality of cavities, the working efficiency of the leak detection device is greatly influenced by the air inflation time and the air exhaust time, and the larger the cavity of the workpiece is, the longer the required pressurization time is and the longer the required air exhaust time is.
SUMMERY OF THE UTILITY MODEL
Based on this, the utility model aims at providing a leak hunting device, it has the advantage that reduces filling, gassing time of part cavity effectively.
A leak detection device is arranged on a leak detection machine and is used for detecting the air tightness of a part with a first cavity and a plurality of second cavities, and comprises an air tightness instrument, a first air control valve, a first electromagnetic valve, a plurality of second air control valves, a plurality of third air control valves, a plurality of second electromagnetic valves, a plurality of fourth air control valves, a plurality of third electromagnetic valves, an external air source and a central control machine;
the first cavity is communicated with the air tightness instrument through a first air control valve;
the second cavity is communicated with the air tightness instrument through a second air control valve, is communicated with the outside through a third air control valve, and is communicated with an external air source through a fourth air control valve;
the central control machine controls a first pneumatic control valve through a first electromagnetic valve, controls a second pneumatic control valve and a third pneumatic control valve through a second electromagnetic valve, and controls a fourth pneumatic control valve through a third electromagnetic valve.
Further, the first pneumatic control valve is a two-position three-way pneumatic control valve, the second pneumatic control valve, the third pneumatic control valve and the fourth pneumatic control valve are two-position two-way pneumatic control valves, and the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are two-position three-way electromagnetic valves.
The central control machine controls the fifth pneumatic control valve through a third electromagnetic valve.
And the pressure regulating valves are arranged between the fifth pneumatic control valve and an external air source.
Further, the fifth pneumatic control valve is a two-position three-way pneumatic control valve.
Further, the pressure regulating valve is a precision air source pressure regulating valve.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the cavity to be detected of the part to be detected is additionally pressurized by one more air source for pre-inflation, so that the inflation time of the cavity of the part can be effectively reduced, and the working efficiency is improved;
2. by connecting the third air control valve for exhausting air to the second cavity, when the air tightness instrument inflates the next second cavity to be detected, the second cavity which is detected can be exhausted through the third air control valve, so that the exhaust time of the part cavity is reduced, and the work efficiency is further improved;
3. a mechanical pressure regulating valve is replaced by a precise air source pressure regulating valve at an external air source, so that the inlet air pressure can be better controlled;
4. a fifth pneumatic control valve is arranged between the fourth pneumatic control valve and an external air source, the fifth pneumatic control valve is used for discharging air in a pipeline between the fourth pneumatic control valve and the fifth pneumatic control valve, and when the fourth pneumatic control valve is damaged, the third pneumatic control valve can prevent the air source from continuously inflating the cavity, so that the air-leaking cavity is prevented from being detected to be qualified, and the detection precision of the detection device is improved;
5. the first air control valve is opened after the air tightness instrument is filled with air in the pipeline between the first air control valve and the air tightness instrument, so that the air pressure of the cavity of the part can be effectively prevented from being reversely jacked back to the air tightness instrument.
For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic structural diagram of a leak detection apparatus for detecting a plurality of chambers by using a gas tightness meter;
fig. 2 is a schematic structural diagram of the leak detection device according to the present invention;
description of reference numerals:
1. an air-tight instrument; 2. a cavity; 3. a two-position three-way pneumatic control valve; 4. a two-position three-way electromagnetic valve; 5. a central control machine; 6. a first cavity; 7. a second cavity; 8. a first pneumatic valve; 9. a first solenoid valve; 10. a second pneumatic control valve; 11. a third pneumatic control valve; 12. a second solenoid valve; 13. a fourth pneumatic control valve; 14. a fifth pneumatic control valve; 15. a third electromagnetic valve; 16. a pressure regulating valve; 17. an external gas source.
Detailed Description
A leakage detection device is installed on a leakage detection machine and used for detecting the air tightness of automobile parts. Referring to fig. 2, the automobile part to be detected is provided with a first cavity 6 and a plurality of second cavities 7, and the leak detection device comprises an air tightness instrument 1, a first air control valve 8, a first electromagnetic valve 9, a plurality of second air control valves 10, a plurality of third air control valves 11, a plurality of second electromagnetic valves 12, a plurality of fourth air control valves 13, a plurality of fifth air control valves 14, a plurality of third electromagnetic valves 15, a plurality of pressure regulating valves 16, an external air source 17 and a central control machine 5.
Referring to fig. 2, in order to inflate and exhaust the first cavity 6, the air tightness instrument 1 is communicated with the first cavity 6 through a first air control valve 8, and the central control machine 5 controls the work of the first air control valve 8 through a first electromagnetic valve 9 to control the connection and disconnection of the air tightness instrument 1 and the first cavity 6.
Referring to fig. 2, in order to inflate the second cavity 7, the air tightness instrument 1 is communicated with the second cavity 7 through a second air control valve 10, and the central control machine 5 controls the operation of the second air control valve 10 through a second electromagnetic valve 12 to control the connection and disconnection of the air tightness instrument 1 and the second cavity 7.
Referring to fig. 2, in order to exhaust the second cavity 7, the second cavity 7 is further connected with a third pneumatic control valve 11, and the central control machine 5 controls the third pneumatic control valve 11 to operate through a second electromagnetic valve 12 to control the second cavity 7 to be connected with the external environment.
Referring to fig. 2, in order to pre-inflate the second cavity 7, an external air source 17 is communicated to the second cavity 7 through a pressure regulating valve 16, a fifth air control valve 14 and a fourth air control valve 13 in sequence, and the central control machine 5 controls the fourth air control valve 13 and the fifth air control valve 14 to operate through a third electromagnetic valve 15 so as to control the connection and disconnection between the external air source 17 and the second cavity 7.
In this embodiment, the first pneumatic control valve 8 and the fifth pneumatic control valve 14 are two-position three-way pneumatic control valves, the first electromagnetic valve 9, the second electromagnetic valve 12 and the third electromagnetic valve 15 are two-position three-way electromagnetic valves, the second pneumatic control valve 10, the third pneumatic control valve 11 and the fourth pneumatic control valve 13 are two-position two-way pneumatic control valves, and the pressure regulating valve 16 is a precision air source pressure regulating valve 16.
Leak hunting device's working process:
when the leak detector detects a product, the air tightness instrument 1 inflates air to the first cavity 6 through the first air control valve 8, the second air control valve 10 disconnects the air tightness instrument 1 from the second cavity 7, and simultaneously, an external air source 17 inflates air to the second cavity 7 sequentially through the pressure regulating valve 16, the fifth air control valve 14 and the fourth air control valve 13;
after the first cavity 6 is detected, the first electromagnetic valve 9 changes the use state of the first air control valve 8, the first cavity 6 exhausts air to the external environment through the first air control valve 8, and the air tightness instrument 1 inflates air to a pipeline between the air tightness instrument 1 and the second air control valve 10;
after the pipeline is inflated for a period of time, the central control machine 5 changes the use state of a certain second pneumatic control valve 10 through the second electromagnetic valve 12, the use states of the other second pneumatic control valves 10 are unchanged, the air tightness instrument 1 inflates the second cavity 7 through the second pneumatic control valve 10, the central control machine 5 changes the use states of a fourth pneumatic control valve 13 and a fifth pneumatic control valve 14 connected with the second cavity 7 through the third electromagnetic valve 15, the fourth pneumatic control valve 13 disconnects the second cavity 7 from an external air source 17, the fifth pneumatic control valve 14 exhausts the air in the pipeline between the fourth pneumatic control valve 13 and the fifth pneumatic control valve 14 to the external environment, and meanwhile, the external air source 17 pre-inflates the next second cavity 7 to be detected;
after the second cavity 7 is detected, the second air control valve 10 connected to the second cavity 7 disconnects the gas tightness instrument 1 from the second cavity 7, the third air control valve 11 connected to the second cavity 7 guides the gas in the second cavity 7 to the external environment, and the gas tightness instrument 1 detects the next second cavity 7 according to the above steps.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. Leak detection apparatus, to be mounted on a leak detector, for detecting the tightness of a part having a first cavity (6) and a plurality of second cavities (7), characterized in that:
the air tightness measuring device comprises an air tightness instrument (1), a first air control valve (8), a first electromagnetic valve (9), a plurality of second air control valves (10), a plurality of third air control valves (11), a plurality of second electromagnetic valves (12), a plurality of fourth air control valves (13), a plurality of third electromagnetic valves (15), an external air source (17) and a central control machine (5);
the first cavity (6) is communicated with the air-tight instrument (1) through a first air control valve (8);
the second cavity (7) is communicated with the air-tight instrument (1) through a second air control valve (10), communicated with the outside through a third air control valve (11) and communicated with an external air source (17) through a fourth air control valve (13);
the central control machine (5) controls the first pneumatic control valve (8) through the first electromagnetic valve (9), controls the second pneumatic control valve (10) and the third pneumatic control valve (11) through the second electromagnetic valve (12), and controls the fourth pneumatic control valve (13) through the third electromagnetic valve (15).
2. Leak detection apparatus according to claim 1, wherein: the first pneumatic control valve (8) is a two-position three-way pneumatic control valve, the second pneumatic control valve (10), the third pneumatic control valve (11) and the fourth pneumatic control valve (13) are two-position two-way pneumatic control valves, and the first electromagnetic valve (9), the second electromagnetic valve (12) and the third electromagnetic valve (15) are two-position three-way electromagnetic valves.
3. Leak detection apparatus according to claim 1, wherein: the air-operated valve is characterized by further comprising a plurality of fifth air-operated valves (14), the fifth air-operated valves (14) are arranged between the fourth air-operated valves (13) and an external air source (17), and the central control machine (5) controls the fifth air-operated valves (14) through third electromagnetic valves (15).
4. Leak detection apparatus according to claim 3, wherein: the air-conditioning system also comprises a plurality of pressure-regulating valves (16), wherein the pressure-regulating valves (16) are arranged between the fifth pneumatic control valve (14) and an external air source (17).
5. Leak detection apparatus according to claim 3, wherein: the fifth pneumatic control valve (14) is a two-position three-way pneumatic control valve.
6. Leak detection apparatus according to claim 4, wherein: the pressure regulating valve (16) is a precision air source pressure regulating valve (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980701.4U CN210037081U (en) | 2019-06-26 | 2019-06-26 | Leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920980701.4U CN210037081U (en) | 2019-06-26 | 2019-06-26 | Leak detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210037081U true CN210037081U (en) | 2020-02-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920980701.4U Active CN210037081U (en) | 2019-06-26 | 2019-06-26 | Leak detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210037081U (en) |
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2019
- 2019-06-26 CN CN201920980701.4U patent/CN210037081U/en active Active
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