CN218823024U - Special frock of atmospheric pressure flow measurement - Google Patents
Special frock of atmospheric pressure flow measurement Download PDFInfo
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- CN218823024U CN218823024U CN202223066055.1U CN202223066055U CN218823024U CN 218823024 U CN218823024 U CN 218823024U CN 202223066055 U CN202223066055 U CN 202223066055U CN 218823024 U CN218823024 U CN 218823024U
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- air pressure
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- pressure flow
- air
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Abstract
The utility model relates to a special tool for detecting air pressure flow, which is used for detecting the air tightness of parts of shaft taper surfaces and comprises a test cavity, an air pressure flow meter on the top surface of the test cavity, and an air supply pipeline and an air pressure regulating valve which are communicated with the test cavity; a hole is formed in the side wall of the testing cavity, and a silver sealing gasket is arranged on the bottom surface of the hole; the central gas through hole of the silver sealing washer is communicated with the hole; the hole is internally embedded with a locking accessory which is communicated with the front and the back, during detection, the part and the locking accessory are fixedly locked, the locking accessory and the test cavity are fixedly locked, and one end of the part opening penetrates through the locking accessory and is tightly pressed and sealed with the conical surface of the tested product and the conical hole of the silver sealing washer. Compared with the prior art, the utility model discloses simple structure, it is simple and convenient swift to operate, and can find out whether the spare part gas tightness is qualified from the atmospheric pressure flow meter directly perceivedly.
Description
Technical Field
The utility model belongs to the technical field of the gas tightness detects technique and specifically relates to a special frock of atmospheric pressure flow measurement is related to.
Background
Common air tightness detection methods include a water soaking method and a pressure drop method, wherein the water soaking method judges whether a part to be detected leaks air or not by observing whether the part generates bubbles in water or not, the method has large error and limited application range; the pressure drop rule is to judge the air tightness of the part to be detected by equivalent air intake, pressure stabilization and pressure change monitoring, and the method is widely applied to various fields due to high universality and high detection accuracy.
The air tightness detection is an important process for product quality and production safety, the effect of the air tightness detection in the production process is widely accepted, the application field of the air tightness detection is wider and wider, and the air tightness detection is expanded from the previous automobile manufacturing industry to the current general military industry, vacuum equipment, medical appliances and the like.
At present, many precision parts can not carry out accurate detection to the gas tightness in the production process, have the unqualified problem of product gas tightness. With the continuous improvement of the precision of products and the consciousness of product safety quality, customers attach more and more importance to the air tightness detection of precise parts. However, the existing equipment for detecting the air tightness of the medical instrument by using a pressure drop method is complex and has a complicated detection flow, so that equipment which is simple and easy to operate is urgently needed for detecting the air tightness.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a special frock of atmospheric pressure flow measurement in order to overcome above-mentioned prior art existence if the defect such as check out test set structure is complicated.
The purpose of the utility model can be realized through the following technical scheme:
the technical scheme of the utility model is to provide a special frock of atmospheric pressure flow detection for detect the gas tightness of the spare part that has inside cavity, one end of spare part is equipped with the trompil that communicates with inside cavity, this frock includes the test cavity, sets up the atmospheric pressure flow meter on the top surface of the test cavity, and with the air supply line that the test cavity communicates;
a hole is formed in the side wall of the gas supply pipeline, and a sealing gasket is further mounted at the hole; a gas through hole communicated with the gas supply pipeline is processed in the central area of the sealing washer;
the hole is embedded with a locking accessory which is communicated with the front and the back, during detection, the part is fixedly locked with the locking accessory, the locking accessory is fixedly locked with the test cavity, and one end of the part with a hole penetrates through the locking accessory and is tightly abutted and sealed with the inner wall of the gas through hole of the sealing washer.
Furthermore, one end of the locking fitting is provided with a threaded interface used for being fastened with the part, the other end of the locking fitting is tightly attached to the sealing washer, and the outer wall of the locking fitting is provided with threads used for fastening the locking fitting and the test cavity.
Further, the side wall of the opening end of the part is in contact seal with the inner wall of the gas through hole of the sealing gasket through a conical surface.
Further, the other end surface of the part is provided with a groove for the action of a torque wrench.
Furthermore, a hole is formed in the gas supply pipeline inside the testing cavity, and the sealing washer is communicated with the hole.
Furthermore, the gas supply pipeline is provided with a gas pressure regulating valve for regulating the gas flow.
Furthermore, the air pressure regulating valve is also connected with a vent pipe used for conveying air.
Further, the air pressure regulating valve is a stainless steel air pressure regulating valve.
Further, the sealing gasket is a sealing silver gasket.
Furthermore, the locking fitting is a stainless steel locking fitting, the testing cavity is a stainless steel cavity, and the air pressure flowmeter is a stainless steel air pressure flowmeter.
The utility model discloses through the conical surface contact of zero part and sealed silver packing ring, connect and fasten spare part and test cavity through locking fittings, thereby realize the sealing of whole frock, after letting in 0.3-0.4 Mpa gas in the cavity, when the gas flows through sealed silver packing ring and gets into the spare part, if the spare part leakproofness is good, the gas pressure in the whole cavity does not change, the pointer on the atmospheric pressure flow meter does not change; if the sealing performance of the parts is poor, gas flows out through gaps on the parts, so that the gas pressure in the whole cavity is changed, and the pointer on the gas pressure flowmeter falls back.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) The utility model discloses an each part all adopts the stainless steel, can increase of service life.
(2) The utility model discloses a sealed silver packing ring, silvery ground is soft, passes through the conical surface with spare part and seals, and is sealed effectual, consequently detects the gas tightness sensitive.
(3) The utility model discloses simple structure, it is easy and simple to handle, can find out whether spare part gas tightness is qualified from the atmospheric pressure flowmeter directly perceivedly.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic sectional view of the present invention.
The labels in the figure are:
1-torque wrench; 2-component parts; 3-locking the fitting; 4-sealing silver gaskets; 5-air pressure regulating valve; 6-a cavity; 7-air pressure flow meter; 8-gas supply line.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
In the following embodiments, unless otherwise specified, all the functional components or structures are conventional components or structures adopted in the art to achieve the corresponding functions.
Example 1
As shown in fig. 1-2, it is a special tool for detecting air pressure flow. This frock is used for detecting the gas tightness that has inside cavity and for spare part 2 of axle type tapering face, and the one end of spare part 2 is equipped with the trompil with inside cavity intercommunication. The tool comprises a testing cavity 6, an air pressure flowmeter 7 arranged on the top surface of the testing cavity 6, and an air supply pipeline 8 communicated with the testing cavity 6; a hole is formed in the side wall of the testing cavity 6, a sealing washer 4 is further installed at the hole, and a gas through hole communicated with the hole is formed in the central area of the sealing washer 4; the hole is embedded with a locking fitting 3 which is through from front to back, during detection, the part 2 is fixedly locked with the locking fitting 3, the locking fitting 3 is fixedly locked with the test cavity 6, one end of the opening of the part 2 penetrates through the locking fitting 3 and is tightly sealed with the inner wall of the gas through hole of the sealing washer 4.
One end of the locking fitting 3 is provided with a threaded interface used for being fastened with the part 2, the other end of the locking fitting 3 is tightly attached to the sealing washer 4, and the outer wall of the locking fitting 3 is also provided with threads used for being fastened with the testing cavity 6. The side wall of the opening end of the part 2 is in contact seal with the inner wall of the gas through hole of the sealing washer 4 through a conical surface, and the surface of the other end of the part 2 is provided with a groove for the torque wrench 1 to act. A hole is arranged on the gas supply pipeline 8 in the testing cavity 6, and the sealing washer 4 is communicated with the hole; the gas supply pipeline 8 is also provided with a gas pressure regulating valve 5 for regulating the gas flow, and the gas pressure regulating valve 5 is also connected with a vent pipe for conveying gas.
The parts selected by the tool are a stainless steel air pressure regulating valve, a stainless steel locking fitting, a stainless steel cavity, a stainless steel air pressure flowmeter and a sealing silver gasket.
When the tool is used, firstly, an air pressure regulating valve 5 is installed on one side wall of a testing cavity 6 through an air supply pipeline 8 and is locked, an air pressure flowmeter 7 is installed on the top surface of the testing cavity 6, a sealing washer 4 is fixed at a hole formed in the air supply pipeline 8 in the testing cavity 6, a locking accessory 3 penetrates through a hole in the side wall of the testing cavity 6 and is tightly attached to the sealing washer 4, a part 2 is simultaneously inserted into the locking accessory 3 and the sealing washer 4 through a torque wrench 1 with the Nm of 15, the part 2 and the sealing washer 4 are contacted through a conical surface to seal, the locking accessory 3 is screwed to fasten the locking accessory 3 and the testing cavity 6, and a threaded connector on the locking accessory 3 is screwed to fasten the locking accessory 3 and the part 2. Opening a valve on the air pressure regulating valve 5, introducing air into the testing cavity 6, observing that the reading on the air pressure flowmeter 7 keeps 30s when the reading is 0.3-0.4 Mpa, and if a gauge needle on the air pressure flowmeter 7 falls back, indicating that the air tightness of the part 2 is unqualified; if the pointer on the air pressure flow meter 7 is not changed, the air tightness of the part 2 is qualified.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A special tool for detecting air pressure flow is used for detecting the air tightness of a part (2) with an internal hollow cavity, and one end of the part (2) is provided with an opening communicated with the internal hollow cavity, and is characterized by comprising a test cavity (6), an air pressure flow meter (7) arranged on the top surface of the test cavity (6), and an air supply pipeline (8) communicated with the test cavity (6);
a hole is formed in the side wall of the testing cavity (6), and a sealing gasket (4) is further mounted at the hole; a gas through hole communicated with the hole is processed in the central area of the sealing washer (4);
the hole is embedded with a locking fitting (3) which is through from front to back, during detection, the part (2) is fixedly locked with the locking fitting (3), the locking fitting (3) is fixedly locked with the test cavity (6), one end of an opening of the part (2) penetrates through the locking fitting (3), and the inner wall of a gas through hole of the sealing washer (4) is abutted to be tightly sealed.
2. The special tool for detecting the air pressure flow according to claim 1, wherein a threaded interface used for being fastened with the part (2) is arranged at one end of the locking fitting (3), the sealing washer (4) is tightly attached to the other end of the locking fitting (3), and threads used for fastening the locking fitting (3) and the test cavity (6) are arranged on the outer wall of the locking fitting (3).
3. The special tooling for air pressure flow detection according to claim 1, wherein the side wall of the opening end of the part (2) is sealed with the inner wall of the air through hole of the sealing washer (4) through conical surface contact.
4. The special tool for detecting air pressure flow according to claim 3, wherein a groove for the action of the torque wrench (1) is formed in the surface of the other end of the component (2).
5. The special tool for detecting air pressure flow according to claim 1, wherein a hole is formed in the air supply pipeline (8) in the testing cavity (6), and the sealing washer (4) is communicated with the hole.
6. The special tool for detecting the air pressure flow according to claim 5, wherein an air pressure regulating valve (5) for regulating the air flow is arranged on the air supply pipeline (8).
7. The special tool for detecting air pressure flow as claimed in claim 6, wherein the air pressure regulating valve (5) is further connected with a vent pipe for conveying air.
8. The special tool for detecting air pressure and flow as claimed in claim 7, wherein the air pressure regulating valve (5) is a stainless steel air pressure regulating valve.
9. The special tooling for air pressure flow detection according to claim 1, wherein the sealing washer (4) is a silver sealing washer.
10. The special tool for detecting air pressure flow as claimed in claim 1, wherein the locking fitting (3) is a stainless steel locking fitting, the test cavity (6) is a stainless steel test cavity, and the air pressure flow meter (7) is a stainless steel air pressure flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223066055.1U CN218823024U (en) | 2022-11-18 | 2022-11-18 | Special frock of atmospheric pressure flow measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223066055.1U CN218823024U (en) | 2022-11-18 | 2022-11-18 | Special frock of atmospheric pressure flow measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218823024U true CN218823024U (en) | 2023-04-07 |
Family
ID=87248479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223066055.1U Active CN218823024U (en) | 2022-11-18 | 2022-11-18 | Special frock of atmospheric pressure flow measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218823024U (en) |
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2022
- 2022-11-18 CN CN202223066055.1U patent/CN218823024U/en active Active
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