CN219224049U

CN219224049U - Short immersion type air tightness detection instrument

Info

Publication number: CN219224049U
Application number: CN202222530258.5U
Authority: CN
Inventors: 成惊雷
Original assignee: Hunan Horizonal Auto Parts Co ltd
Current assignee: Hunan Horizonal Auto Parts Co ltd
Priority date: 2022-09-23
Filing date: 2022-09-23
Publication date: 2023-06-20
Anticipated expiration: 2032-09-23

Abstract

The utility model discloses a short-immersion type air tightness detection instrument which comprises a box body, wherein a sealed air chamber is arranged in the top end of the box body, and two sides of the air chamber are respectively connected with a first air pipe and a second air pipe. The utility model is provided with a box body, the top end of the box body is provided with an air chamber, the two sides of the air chamber are respectively connected with a first air pipe and a second air pipe, the outer side wall of the box body is also fixedly provided with a transparent pipe, the second air pipe is connected with the transparent pipe, water is arranged in the transparent pipe, the top end of the transparent pipe is higher than the water surface, the third air pipe is connected with a tested part through a hose, during detection, the air chamber is inflated firstly, then a second valve on the third air pipe is opened to enable air to enter the tested part, and the tightness of the tested part can be judged by only observing whether the water in the transparent pipe continuously bubbles.

Description

Short immersion type air tightness detection instrument

Technical Field

The utility model relates to the technical field of part air tightness detection, in particular to a short-immersion type air tightness detection instrument.

Background

For parts with the requirement of short-term soaking prevention and air tightness, an air tightness detector is generally adopted for detection. The principle of the air tightness detector is as follows: and (3) inflating the tested cavity of the workpiece under a certain pressure condition (the specific pressure parameter is determined by the detection technical rules of the production line), keeping for a certain time, cutting off the connection between the tested workpiece and the air source, recording the pressure indication value at the moment, and after a certain time (a few seconds or tens of seconds), reading the pressure indication value again and comparing the pressure indication value with the pressure indication value recorded in the previous time. If the measured cavity has leakage, the two pressure indication values have a difference value. The magnitude of the difference reflects the leakage state of the workpiece in the detection time period, and the larger the difference is, the more serious the workpiece leakage is. And if the difference is within the allowable range, the tested workpiece is considered to be qualified, otherwise, the tested workpiece is not qualified. Therefore, the pressure, temperature and whether the connecting air pipe has micro air leakage or not can influence the detection result to cause misjudgment due to a plurality of factors such as the sensitivity of the pressure sensor in the air tightness detector, and the air tightness detector in the market has higher price, so the utility model provides a short-immersion type air tightness detector.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a short-immersion type air tightness detection instrument.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a detection instrument of short immersion type gas tightness, includes the box, the inside sealed air chamber that is equipped with in box top, the air chamber both sides are connected with first trachea and second trachea respectively, the second trachea is located the outdoor one end of air chamber and is connected with first valve, and the first valve other end is connected with the intake pipe, the box lateral wall is close to one side of second tracheal and is fixed with sealed transparent pipe, and the inside clear water that is equipped with of sealed transparent pipe, air chamber one end and sealed transparent pipe bottom intercommunication are kept away from to the second trachea, sealed transparent pipe top lateral wall is connected with the third trachea, the third trachea other end is connected with the second valve, and the second valve other end is connected with the tracheal union coupling, the second valve is connected with the hose through tracheal union coupling, the hose other end and measured part intercommunication.

Further, one end of the air inlet pipe, which is far away from the first valve, is connected with the air pump, so that the air chamber can be inflated by the air pump.

Further, the top end of the air chamber is connected with an air pressure gauge, and the air pressure in the air chamber can be intuitively observed through the air pressure gauge.

Further, the surface of the air pipe joint is provided with external threads, one end of the hose close to the air pipe joint is connected with an internal thread sleeve, and the internal thread sleeve is in threaded rotation connection with the air pipe joint, so that the hose and an air pipe structure are conveniently and quickly connected.

Further, the sealing baffle is fixedly sleeved on the surface of the air pipe joint, the inner thread sleeve is tightly attached to the side wall of the sealing baffle, and the sealing performance of the connection of the hose and the air pipe joint can be improved through the arrangement of the sealing baffle.

Further, the third air pipe is higher than the water surface of the clean water in the sealing transparent pipe, so that the clean water can be prevented from being discharged from the third air pipe.

Further, the storage groove is formed in the bottom end of the box body, the storage box is connected with the storage groove in a sliding mode, and when the instrument is not used, the storage box can store the hose.

The utility model has the beneficial effects that:

when the air tightness detecting instrument is used, the air chamber is arranged at the top end of the box body, the first air pipe and the second air pipe are respectively connected to the two sides of the air chamber, the transparent pipe is also fixed to the outer side wall of the box body, the second air pipe is connected with the transparent pipe, water is arranged in the transparent pipe, the top end of the transparent pipe is higher than the water surface, the third air pipe is connected with a detected part through a hose, during detection, the air chamber is inflated firstly, then the second valve on the third air pipe is opened, so that air enters the detected part, and at the moment, the tightness of the detected part can be judged by only observing whether the water in the transparent pipe continuously bubbles or not.

Drawings

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a front cross-sectional view of the present utility model;

fig. 3 is an enlarged view of the utility model at a.

Legend description:

1. a case; 2. a gas chamber; 3. a first air tube; 4. a first valve; 5. an air inlet pipe; 6. sealing the transparent tube; 7. a second air pipe; 8. a third air pipe; 9. a second valve; 10. an air pipe joint; 11. a hose; 12. an internal thread sleeve; 13. a sealing baffle; 14. a part to be measured; 15. an air pressure gauge; 16. a storage groove; 17. and a storage box.

Detailed Description

As shown in fig. 1-3, a detection instrument for short immersion type air tightness is related, which comprises a box body 1, a sealed air chamber 2 is arranged inside the top end of the box body 1, a first air pipe 3 and a second air pipe 7 are respectively connected to two sides of the air chamber 2, one end of the second air pipe 7, which is positioned outside the air chamber 2, is connected with a first valve 4, the other end of the first valve 4 is connected with an air inlet pipe 5, one side, close to the second air pipe 7, of the outer side wall of the box body 1 is fixedly provided with a sealed transparent pipe 6, clear water is arranged inside the sealed transparent pipe 6, one end, far away from the air chamber 2, of the second air pipe 7 is communicated with the bottom of the sealed transparent pipe 6, the side wall at the top end of the sealed transparent pipe 6 is connected with a third air pipe 8, the other end of the third air pipe 8 is connected with a second valve 9, the other end of the second valve 9 is connected with an air pipe joint 10, the second valve 9 is connected with a hose 11 through the air pipe joint 10, and the other end of the hose 11 is communicated with a part 14 to be detected.

As shown in fig. 1, one end of the air inlet pipe 5, which is far away from the first valve 4, is connected with an air pump, and the air chamber 2 can be inflated by the air pump. The top end of the air chamber 2 is connected with an air pressure meter 15, and the pressure in the air chamber 2 can be intuitively observed through the air pressure meter 15.

As shown in fig. 2 and 3, the surface of the air pipe joint 10 is provided with external threads, one end of the hose 11, which is close to the air pipe joint 10, is connected with an internal thread sleeve 12, and the internal thread sleeve 12 is in threaded rotation connection with the air pipe joint 10, so that the hose 11 can be connected with the air pipe joint 10 through the internal thread sleeve 12. The surface of the air pipe joint 10 is fixedly sleeved with a sealing baffle 13, the inner thread sleeve 12 is tightly attached to the side wall of the sealing baffle 13, and the sealing baffle 13 can increase the tightness of the connection between the inner thread sleeve 12 and the air pipe joint 10.

As shown in fig. 2, the third air pipe 8 is positioned higher than the water surface of the clear water inside the sealed transparent pipe 6, so that the clear water can be prevented from being discharged from the third air pipe 8.

As shown in fig. 1 and 2, the bottom end of the case 1 is provided with a storage groove 16, and the storage groove 16 is internally and slidably connected with a storage box 17, so that when the apparatus is not in use, the detached hose 11 can be stored in the storage box 17.

When in use, the utility model is characterized in that: the hose 11 is taken out from the storage box 17, then the internal thread sleeve 12 at one end of the hose 11 is screwed onto the air pipe joint 10, then the other end of the hose 11 is connected with the tested part 14, after preparation work is finished, the first valve 4 is opened, the air chamber 2 is inflated through the air pump, the air pressure meter 15 is observed at the moment, after the air pressure reaches a specified value, the first valve 4 is closed, the second valve 9 is opened at the moment, the air in the air chamber 2 enters the tested part 14 through the second air pipe 7, the third air pipe 8 and the hose 11 due to the air pressure difference between the air chamber 2 and the tested part 14, in the process, the clear water in the sealed transparent pipe 6 is inflated, when the air pressure among the air chamber 2, the sealed transparent pipe 6 and the tested part 14 is balanced, the clear water in the sealed transparent pipe 6 is stopped from being inflated, and no bubbles are continued in a specified time, the side indicates that the tightness of the tested part 14 is qualified, and if the inside of the sealed transparent pipe 6 is continuously inflated in a specified time, the side indicates that the tightness of the tested part 14 is unqualified.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A short immersion type air tightness detecting instrument is characterized in that: including box (1), box (1) top inside is equipped with sealed air chamber (2), air chamber (2) both sides are connected with first trachea (3) and second trachea (7) respectively, second trachea (7) are located the one end outside air chamber (2) and are connected with first valve (4), and first valve (4) other end is connected with intake pipe (5), one side that box (1) lateral wall is close to second trachea (7) is fixed with sealed transparent pipe (6), and the inside clear water that is equipped with of sealed transparent pipe (6), air chamber (2) one end and sealed transparent pipe (6) bottom intercommunication are kept away from to second trachea (7), sealed transparent pipe (6) top lateral wall is connected with third trachea (8), the third trachea (8) other end is connected with second valve (9), and the second valve (9) other end is connected with air pipe connection (10), second valve (9) are connected with hose (11) through air pipe connection (10), hose (11) other end and measured part (14) intercommunication.

2. The short immersion type airtightness detection apparatus according to claim 1, wherein: one end of the air inlet pipe (5) far away from the first valve (4) is connected with the air pump.

3. The short immersion type airtightness detection apparatus according to claim 1, wherein: the top end of the air chamber (2) is connected with an air pressure meter (15).

4. The short immersion type airtightness detection apparatus according to claim 1, wherein: the surface of the air pipe joint (10) is provided with external threads, one end of the hose (11) close to the air pipe joint (10) is connected with an internal thread sleeve (12), and the internal thread sleeve (12) is in threaded rotation connection with the air pipe joint (10).

5. The short immersion type airtightness detection apparatus according to claim 4, wherein: the surface of the air pipe joint (10) is fixedly sleeved with a sealing baffle (13), and the inner thread sleeve (12) is tightly attached to the side wall of the sealing baffle (13).

6. The short immersion type airtightness detection apparatus according to claim 1, wherein: the position of the third air pipe (8) is higher than the water surface of clean water in the sealing transparent pipe (6).

7. The short immersion type airtightness detection apparatus according to claim 1, wherein: the storage groove (16) is formed in the bottom end of the box body (1), and the storage box (17) is connected inside the storage groove (16) in a sliding mode.