CN210464840U - Air tightness detection device of air valve - Google Patents

Air tightness detection device of air valve Download PDF

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Publication number
CN210464840U
CN210464840U CN201921830344.XU CN201921830344U CN210464840U CN 210464840 U CN210464840 U CN 210464840U CN 201921830344 U CN201921830344 U CN 201921830344U CN 210464840 U CN210464840 U CN 210464840U
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China
Prior art keywords
air
air valve
hole
detection device
valve
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CN201921830344.XU
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Chinese (zh)
Inventor
马晶秋
张海鑫
李登科
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China Shipbuilding Power Engineering Institute Co Ltd
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China Shipbuilding Power Engineering Institute Co Ltd
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Abstract

The utility model relates to an air valve detection area discloses an air tightness detection device of air valve. A device for detecting the air tightness of an air valve comprises a shell, wherein a placing table for placing and positioning the air valve is arranged in the shell along the circumferential direction, the placing table divides the shell into an air inlet cavity and a detection cavity, an air inlet is formed in the shell, and the air inlet is communicated with the air inlet cavity; the top cover is detachably connected to the shell and used for fixing and pressing the valve seat of the air valve; and the pressure gauge is used for detecting the pressure value of the detection cavity. The utility model provides an air tightness detection device of an air valve, wherein a placing platform is arranged in a shell to separate an air inlet cavity and a detection cavity, so that the structure of the device is simplified, the air valve is more accurately positioned, and the influence on the air tightness of the detection device caused by mutual interference among structures of each part of the detection device is reduced; the top cover is detachably connected with the shell, so that the air valve can be installed and replaced conveniently, the structure of the air tightness detection equipment is simplified, and the accuracy of an air tightness detection result is improved.

Description

Air tightness detection device of air valve
Technical Field
The utility model relates to an air valve detection area especially relates to an air tightness detection device of air valve.
Background
Normally closed valves are widely used in mechanical equipment in various fields, and the working efficiency and safety of the mechanical equipment are affected by the quality of air tightness of the normally closed valves. The air valve air tightness detection equipment in the prior art is complicated in structure and inconvenient to use, and influences the accuracy of an air tightness detection result.
Based on this, it is desired to invent a device for detecting air tightness of a gas valve to solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas tightness detection device of pneumatic valve has simplified the structure of the gas tightness check out test set of pneumatic valve, has improved the accuracy of the gas tightness testing result of pneumatic valve again.
To achieve the purpose, the utility model adopts the following technical proposal:
an air tightness detection device of an air valve comprises:
the gas valve detection device comprises a shell, wherein a placing table is arranged in the shell along the circumferential direction and used for placing and positioning a gas valve, the placing table divides the shell into a gas inlet cavity and a detection cavity, and a gas inlet hole is formed in the shell and communicated with the gas inlet cavity;
the top cover is detachably connected to the shell and used for fixing and pressing the valve seat of the air valve;
and the pressure gauge is used for detecting the pressure value of the detection cavity.
Preferably, the top cover is provided with a step hole, and the step hole is used for positioning the air valve.
Preferably, the stepped hole comprises a first hole and a second hole which are communicated in sequence, and the second hole and a stepped surface between the first hole and the second hole are used for positioning a valve seat of the air valve.
Preferably, the shell is provided with an exhaust hole, and the exhaust hole is communicated with the detection cavity.
Preferably, the pressure gauge is mounted on the exhaust hole.
Preferably, the pressure gauge is connected with the exhaust hole in a sealing manner.
Preferably, the pressure gauge is in threaded connection with the vent hole.
Preferably, the pressure gauge is clamped with the exhaust hole.
Preferably, the top cover is provided with a plurality of first connecting holes along the circumferential direction, a second connecting hole corresponding to the first connecting hole is formed in the end face of the shell connected with the top cover, and the shell and the top cover are connected with the first connecting hole and the second connecting hole in a penetrating mode through screws.
The utility model has the advantages that: the shell is of an integrated structure, and the placing table is arranged in the shell to separate the air inlet cavity from the detection cavity, so that the structure of the device is simplified, the air valve is positioned more accurately, and the influence of mutual interference among structures of the detection device on the air tightness of the detection device is reduced; the top cover is detachably connected with the shell, so that the air valve can be installed and replaced conveniently, the structure of the air tightness detection equipment is simplified, and the accuracy of an air tightness detection result is improved.
Drawings
Fig. 1 is a schematic structural diagram of an air tightness detection device for an air valve according to an embodiment of the present invention.
In the figure:
1. a housing; 11. a placing table; 12. an air inlet cavity; 13. a detection chamber; 14. an air inlet; 15. an exhaust hole;
2. a top cover; 21. a first hole; 22. a second hole;
3. a pressure gauge;
100. an air valve; 101. a valve seat; 102. and (4) a sealing ring.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solutions adopted by the present invention and the technical effects achieved by the present invention clearer, the following will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The embodiment provides an air tightness detection device of an air valve, which is used for detecting the air tightness of the air valve, in particular the air tightness of a normally closed valve. At present, the air valve air tightness detection equipment is complex in structure, inconvenient to use and low in accuracy of an air tightness detection result.
In order to solve the above problem, the air tightness detection device of the air valve provided in this embodiment is used to simplify the structure of the air tightness detection device and improve the accuracy of the air tightness detection result. The air valve air tightness detection device comprises a shell 1, a top cover 2 and a pressure gauge 3.
Specifically, as shown in fig. 1, a placing table 11 is provided in the housing 1 along the circumferential direction, and the placing table 11 is used for placing and positioning the gas valve 100. The placing table 11 divides the interior of the shell 1 into an air inlet cavity 12 and a detection cavity 13, and the shell 1 is integrally designed, so that the structure of the device is simplified, the air valve 100 is more accurately positioned, and the detection device has the function of detecting repeatability. The top cover 2 is detachably attached to the housing 1, and the top cover 2 is used to fix and press the valve seat 101 of the gas valve 100. The pressure gauge 3 is arranged in the detection cavity 13 and used for detecting the pressure value of the detection cavity 13.
Further, an air inlet 14 is formed in the housing 1, and the air inlet 14 is communicated with the air inlet cavity 12 and used for ventilating the air inlet cavity 12 in the detection process. When the detection device provided by the embodiment is used for detecting the air tightness of the air valve 100, the detection air inlet 14 is opened on the side wall of the shell 1 near the air inlet end of the air valve 100, so that the ventilation is ensured to be smooth.
Preferably, a plurality of first connecting holes have been seted up along circumference to top cap 2, offer the second connecting hole corresponding with first connecting hole on the terminal surface that casing 1 is connected with top cap 2, casing 1 wears to locate first connecting hole and second connecting hole with top cap 2 through the screw and is connected, uses the screw connection to make things convenient for the device dismouting, has improved the practicality of device to be favorable to controlling the pressure that top cap 2 applyed to disk seat 101 according to the actual detection demand, improved the accuracy of testing result.
Further, the top cover 2 is provided with a step hole for positioning the air valve 100. The stepped hole includes a first hole 21 and a second hole 22 which are communicated in sequence. The second bore 22 and the step surface between the first bore 21 and the second bore 22 are used to position the valve seat 101 of the gas valve 100. The stepped hole is beneficial to accurately positioning the air valve 100 and extending a part of the air valve 100 out of the detection device from the first hole 21, so that the compactness of the whole structure of the device is improved.
During actual use of the gas valve 100, the gas valve 100 is typically used simultaneously with the sealing ring 102, the sealing ring 102 being engaged with the valve seat 101. When the detection device provided by the embodiment is used for detecting the air tightness of the air valve 100, the sealing ring 102 can be placed between the air valve 100 and the placing table 11, and the air outlet end of the air valve 100 is placed in the detection cavity 13, so that the air tightness between the valve seat 101 and the valve core of the air valve 100 can be detected, and the air tightness between the air valve 100 and the sealing ring 102 can also be detected. And the detection cavity 13 can be tightly pressed by the valve seat 101 to be sealed and isolated with the air inlet cavity 12, so that no sealing element or sealing structure is required to be added to the air tightness device, the structure of the detection device is simplified, the influence on the air tightness of the detection device caused by mutual interference among structures of all parts of the detection device is reduced, and the accuracy of the detection result is improved.
The air inlet cavity 12 of the shell 1 is matched with the valve seat 101 of the detected air valve 100 in shape, the air inlet cavity 12 forms a sealing and isolating effect with the outside through a sealing ring on the periphery of the valve seat 101, a sealing element or a sealing structure does not need to be added to the air tightness device, the structure of the device is simplified, the influence of mutual interference between structures of all parts of the detection device on the air tightness of the detection device is reduced, and the accuracy of a detection result is improved.
Preferably, the casing 1 is provided with an exhaust hole 15, the exhaust hole 15 is communicated with the detection cavity 13, pressure value change caused by air leakage of the air outlet end of the air valve 100 in the detection cavity 13 is directly detected, the detection process is simplified, and the accuracy of the detection result is improved.
Further, manometer 3 is installed on exhaust hole 15, and manometer 3 detects the pressure value in detecting chamber 13. And the pressure gauge 3 is connected with the exhaust hole 15 in a sealing way, so that the detection cavity 13 cannot leak gas in the gas tightness detection process, and the accuracy of the detection result is improved.
Specifically, adopt the connected mode of threaded connection or joint between manometer 3 and the exhaust hole 15, conveniently change different manometer 3 according to the actual measuring process, improved the practicality of device.
For convenience of understanding, the air tightness detection device provided by the present embodiment is used as follows:
first, the seal ring 102 is fitted to the valve seat 101 of the air valve 100, placed in the housing 1 and clamped on the placement table 11, and the air inlet end of the air valve 100 is adjusted to be aligned with the air inlet hole 14. The positioning hole 21 of the top cover 2 is aligned with the air valve 100 to be placed, the top cover 2 is pressed tightly, the top cover 2 and the shell 1 are locked by using a screw, and the pretightening force of the screw is adjusted to the size required by detection.
Next, the pressure gauge 3 is installed in the air outlet 15 and sealed. An initial indication of the pressure gauge 3 is recorded.
Again, air is introduced at a pressure of 15bar through the inlet 14, while observing the time t taken for the reading of the pressure gauge 3 to vary from 0bar to 1 bar.
And finally, if t is more than or equal to 180s, judging that the air tightness of the air valve 100 and the air tightness detection results of the air valve 100 and the sealing ring 102 are both qualified, and ensuring better air tightness. If t is less than 180s and less than 20s, the air tightness of the air valve 100 and the air tightness detection results of the air valve 100 and the sealing ring 102 are both qualified, but the air tightness needs to be improved or unchanged according to the actual application condition. If t is less than or equal to 20s, the air tightness of the air valve 100 and the air tightness detection results of the air valve 100 and the sealing ring 102 are judged to be unqualified, and the air tightness is poor.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (9)

1. The utility model provides an air tightness detection device of pneumatic valve which characterized in that includes:
the air valve detection device comprises a shell (1), wherein a placing table (11) is arranged in the shell (1) along the circumferential direction, the placing table (11) is used for placing and positioning an air valve (100), the placing table (11) divides the shell (1) into an air inlet cavity (12) and a detection cavity (13), an air inlet hole (14) is formed in the shell (1), and the air inlet hole (14) is communicated with the air inlet cavity (12);
the top cover (2), the top cover (2) is detachably connected to the shell (1), and the top cover (2) is used for fixing and pressing a valve seat (101) of the air valve (100);
the pressure gauge (3), the pressure gauge (3) is used for detecting the pressure value of the detection cavity (13).
2. The air valve airtightness detection device according to claim 1, wherein the top cover (2) is provided with a stepped hole for positioning the air valve (100).
3. The air valve airtightness detection apparatus according to claim 2, wherein the stepped hole includes a first hole (21) and a second hole (22) which are communicated in sequence, and the second hole (22) and a stepped surface between the first hole (21) and the second hole (22) are used for positioning a valve seat (101) of the air valve (100).
4. The air valve airtightness detection device according to claim 1, wherein the housing (1) is provided with an exhaust hole (15), and the exhaust hole (15) is communicated with the detection chamber (13).
5. The air valve tightness detection device according to claim 4, characterized in that said pressure gauge (3) is mounted on said vent hole (15).
6. The air valve tightness detection device according to claim 5, characterized in that said pressure gauge (3) is hermetically connected to said vent hole (15).
7. The air valve tightness detection device according to claim 6, characterized in that said pressure gauge (3) is screwed to said vent hole (15).
8. The air valve tightness detection device according to claim 6, characterized in that the pressure gauge (3) is clamped with the vent hole (15).
9. The air valve airtightness detection device according to claim 1, wherein the top cover (2) is provided with a plurality of first connection holes along a circumferential direction, a second connection hole corresponding to the first connection hole is provided on an end surface of the housing (1) connected to the top cover (2), and the housing (1) and the top cover (2) are inserted into the first connection hole and connected to the second connection hole through screws.
CN201921830344.XU 2019-10-28 2019-10-28 Air tightness detection device of air valve Active CN210464840U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921830344.XU CN210464840U (en) 2019-10-28 2019-10-28 Air tightness detection device of air valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921830344.XU CN210464840U (en) 2019-10-28 2019-10-28 Air tightness detection device of air valve

Publications (1)

Publication Number Publication Date
CN210464840U true CN210464840U (en) 2020-05-05

Family

ID=70434977

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921830344.XU Active CN210464840U (en) 2019-10-28 2019-10-28 Air tightness detection device of air valve

Country Status (1)

Country Link
CN (1) CN210464840U (en)

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