A device for detecting the airtightness of a box

Abstract

This invention provides a device for detecting the airtightness of a box, relating to the technical field of airtightness testing devices. It includes a first connecting pipe, with a socket-welded joint fixedly connected to its top. A second connecting pipe is fixedly connected to the top of the socket-welded joint. An exhaust pipe is fixedly connected to one side of the second connecting pipe, and an inlet pipe is fixedly connected to the other side. A third connecting pipe is fixedly connected to the top of the second connecting pipe. Pressure gauge connectors are provided at both ends of the top of the third connecting pipe, and pressure gauge bodies are mounted on the tops of both sets of pressure gauge connectors. This invention connects the exhaust pipe and inlet pipe via the second connecting pipe, and the pressure gauge bodies via the third connecting pipe. The entire device is easy to manufacture, low in cost, portable, space-saving, and convenient to operate, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing devices, specifically to a device for testing the airtightness of a box. Background Technology

[0002] With the development of science and technology, my country's steel structure industry has expanded rapidly, especially in sectors like crane manufacturing and port infrastructure construction, leading to a surge in steel structure construction. After manufacturing and processing, steel structure boxes must undergo an airtightness test to assess their sealing performance.

[0003] In the existing technology, a large number of devices for testing air tightness have emerged with varying levels of quality, most of which use a manual water immersion inflation method. That is, the air tube is first inserted into the inner cavity of the chamber through the flange on the chamber, then the whole chamber is immersed in water, and compressed air is then introduced into the air tube. The presence of air bubbles is then manually observed to determine the air tightness of the chamber. This testing method is not only costly but also labor-intensive and inefficient.

[0004] This invention proposes a device for detecting the airtightness of a box to solve the problems of the existing method of manual water immersion inflation detection, which is not only costly but also labor-intensive and inefficient. Summary of the Invention

[0005] To overcome the problems of the aforementioned background technology that uses manual water immersion inflation testing, which is not only costly but also labor-intensive and inefficient.

[0006] Based on the above technical concept, the technical solution adopted by this utility model is as follows:

[0007] A device for detecting the airtightness of a housing includes a first connecting pipe, a socket welded joint fixedly connected to the top of the first connecting pipe, a second connecting pipe fixedly connected to the top of the socket welded joint, an exhaust pipe fixedly connected to one side of the second connecting pipe, an intake pipe fixedly connected to the other side of the second connecting pipe, a third connecting pipe fixedly connected to the top of the second connecting pipe, and pressure gauge connectors provided at both ends of the top of the third connecting pipe, with pressure gauge bodies installed on the top of both sets of pressure gauge connectors.

[0008] Further defining the above technical solution, a flange is fixedly connected to the bottom of the first connecting pipe, and reserved holes are provided at both ends of the flange.

[0009] Further defining the above technical solution, a first high-pressure needle valve is screwed onto the side of the exhaust pipe away from the second connecting pipe via a first threaded joint.

[0010] Further defining the above technical solution, a second high-pressure needle valve is screwed onto the side of the intake pipe away from the second connecting pipe via a second threaded connector.

[0011] As a further limitation of the above technical solution, a quick connector is connected to the side of the second high-pressure needle valve opposite to the second threaded connector.

[0012] Further defining the above technical solution, the third connecting pipe adopts a U-shaped pipe, and the two sets of pressure gauge bodies are symmetrically distributed about the center of the third connecting pipe.

[0013] Further defining the above technical solution, the exhaust pipe and the intake pipe are connected to the second connecting pipe at a 30° angle offset from the plane.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention connects the exhaust pipe and the intake pipe through a second connecting pipe, and connects the pressure gauge body through a third connecting pipe. The entire device is easy to manufacture, has low cost, is easy to carry, does not take up space when stored, and is convenient to operate, saving time and effort.

[0016] This invention uses bolts inserted into pre-drilled holes to fix the flange to the opening on the top of the test chamber, making it easy to fix the entire device and improving its stability during testing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a device for detecting the airtightness of a box according to the present invention;

[0019] Figure 2 This is a top view of the structure of the device for detecting the airtightness of a housing according to the present invention, in which the third connecting pipe is connected to the air inlet pipe and the exhaust pipe respectively.

[0020] The components are as follows: 1. First connecting pipe; 2. Socket welded union; 3. Second connecting pipe; 4. Exhaust pipe; 5. First threaded joint; 6. First high-pressure needle valve; 7. Third connecting pipe; 8. Pressure gauge joint; 9. Second high-pressure needle valve; 10. Second threaded joint; 11. Inlet pipe; 12. Quick connector; 13. Pressure gauge body; 14. Reserved hole; 15. Flange. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-2 The present invention will be described in further detail below.

[0022] Example 1: This example provides a device for detecting the airtightness of a box, such as... Figure 1 As shown, this invention solves the problems of high cost, high labor intensity, and low efficiency associated with the existing manual water immersion inflation testing method. It includes a first connecting pipe 1, with a socket welded union 2 fixedly connected to the top of the first connecting pipe 1. A second connecting pipe 3 is fixedly connected to the top of the socket welded union 2. An exhaust pipe 4 is fixedly connected to one side of the second connecting pipe 3, and an air inlet pipe 11 is fixedly connected to the other side of the second connecting pipe 3. A third connecting pipe 7 is fixedly connected to the top of the second connecting pipe 3. Pressure gauge connectors 8 are provided at both ends of the top of the third connecting pipe 7, and pressure gauge bodies 13 are installed on the top of both sets of pressure gauge connectors 8.

[0023] Combination Figure 1 In this embodiment of the invention, a first high-pressure needle valve 6 is screwed onto the side of the exhaust pipe 4 away from the second connecting pipe 3 via a first threaded connector 5. This ensures stable gas flow and pressure, while effectively preventing gas leakage inside the exhaust pipe 4 and guaranteeing stable operation of the device.

[0024] Combination Figure 1 In this embodiment of the invention, a second high-pressure needle valve 9 is screwed onto the side of the air inlet pipe 11 opposite to the second connecting pipe 3 via a second threaded connector 10. This ensures stable gas flow and pressure, while effectively preventing gas leakage inside the air inlet pipe 11 and guaranteeing stable operation of the device.

[0025] Combination Figure 1 In this embodiment of the invention, a quick connector 12 is connected to the side of the second high-pressure needle valve 9 opposite to the second threaded connector 10. This allows for quick connection to the hose on the air compressor via the quick connector 12.

[0026] Combination Figure 1 and Figure 2 In this embodiment of the invention, the exhaust pipe 4 and the intake pipe 11 are connected to the second connecting pipe 3 at a 30° angle offset from the plane. This effectively avoids direct collision between the exhaust pipe 4 and the intake pipe 11 at the intersection of the second connecting pipe 3, reducing resistance and thus improving the stability of gas flow.

[0027] Connect the air compressor to the quick connector 12 via a hose. Open the second high-pressure needle valve 9 and the air compressor, and close the first high-pressure needle valve 6. Inject a certain pressure and volume of gas into the sealed chamber through the air compressor. Then close the compressor valve and let it stand for a period of time to allow the pressure to stabilize. After a predetermined measurement time, observe whether there is a change in the pressure value on the pressure gauge body 13. If there is air leakage in the chamber, the pressure will drop. After the test is completed, open the first high-pressure needle valve 6 and discharge the gas through the exhaust pipe 4. When the chamber volume is large, in order to save exhaust time, the air inlet pipe 11 can also be used as the exhaust outlet, which greatly saves time. The whole device is easy to manufacture, low in cost, easy to carry, does not take up space when stored, and is convenient to operate, saving time and effort.

[0028] Example 2: Reference Figure 1 To address the problem of inconvenient installation of existing devices, a flange 15 is fixedly connected to the bottom of the first connecting pipe 1, and reserved holes 14 are provided at both ends inside the flange 15.

[0029] Workers insert bolts into the pre-drilled hole 14 to fix the flange 15 to the opening on the top of the test chamber, making it easier to fix the entire device and improve its stability during testing.

[0030] Example 3: Reference Figure 1 To improve the accuracy of the device's detection, the third connecting pipe 7 adopts a U-shaped pipe, and the two sets of pressure gauge bodies 13 are symmetrically distributed about the center of the third connecting pipe 7.

[0031] During the process of testing the airtightness of the enclosure, the airtightness can be determined by comparing the parameter values ​​on the two pressure gauge bodies 13, thus making the device more accurate.

[0032] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments, which is intended to enable those skilled in the art to understand and apply the present invention. However, it should not be assumed that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A device for detecting the airtightness of a box, comprising a first connecting pipe (1), characterized in that, The top of the first connecting pipe (1) is fixedly connected to a socket welded joint (2), the top of the socket welded joint (2) is fixedly connected to a second connecting pipe (3), one side of the second connecting pipe (3) is fixedly connected to an exhaust pipe (4), the other side of the second connecting pipe (3) is fixedly connected to an air inlet pipe (11), the top of the second connecting pipe (3) is fixedly connected to a third connecting pipe (7), both ends of the top of the third connecting pipe (7) are provided with pressure gauge connectors (8), and the top of both sets of pressure gauge connectors (8) are equipped with pressure gauge bodies (13).

2. The device for detecting the air tightness of a box according to claim 1, characterized in that, The bottom of the first connecting pipe (1) is fixedly connected to a flange (15), and both ends of the flange (15) are provided with reserved holes (14).

3. The device for detecting the air tightness of a box according to claim 1, characterized in that, The exhaust pipe (4) is connected to a first high-pressure needle valve (6) via a first threaded joint (5) on the side opposite to the second connecting pipe (3).

4. The device for detecting the air tightness of a box according to claim 1, characterized in that, The second high-pressure needle valve (9) is screwed onto the side of the air intake pipe (11) away from the second connecting pipe (3) via the second threaded joint (10).

5. The device for detecting the air tightness of a box according to claim 4, characterized in that, The second high-pressure needle valve (9) is connected to a quick connector (12) on the side opposite to the second threaded connector (10).

6. The device for detecting the air tightness of a box according to claim 1, characterized in that, The third connecting pipe (7) adopts a U-shaped pipe, and the two pressure gauge bodies (13) are symmetrically distributed about the center of the third connecting pipe (7).

7. The device for detecting the air tightness of a box according to claim 1, characterized in that, The exhaust pipe (4) and the intake pipe (11) are respectively connected to the second connecting pipe (3) at a 30° angle off the plane.

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