Static pressure pipe structure of pipeline air leakage testing machine

Abstract

The utility model discloses a static pressure pipe structure of a pipeline air leakage testing machine, which relates to the field of static pressure pipes and comprises a connecting hose, one end of the connecting hose is connected with a control box of the testing machine, the other end of the connecting hose is provided with a testing pipe, and the testing pipe is made of hard materials. A hard supporting pipe is fixedly installed in the connecting hose, one end of the testing pipe is inserted into the connecting hose in a filling mode, the surface of the testing pipe is connected with an elastic sealing pipe in a sleeved mode, and the sealing pipe is arranged at the connecting position of the connecting hose and the testing pipe. According to the static pressure pipe structure of the pipeline air leakage testing machine, the testing pipe, the connecting hose and the sealing pipe are arranged, when the testing pipe is installed, the testing pipe can be tightly attached to the inner wall of a pressure tapping opening, the sealing function of the testing pipe is guaranteed, the connecting hose and the testing pipe can be stably connected through the elasticity of the sealing pipe, and the sealing performance of the testing pipe is improved. And the whole structure is very simple.

Description

Technical Field

[0001] The utility model relates to the field of static pressure pipes, in particular to a static pressure pipe structure of a pipeline air leakage tester. Background Art

[0002] The duct leakage tester is a special equipment that uses the testing principle of the Venturi tube to test the air leakage in ventilation and air conditioning. It is mainly composed of a high-speed fan, a variable frequency speed regulation system, a flow tube, an inclined micromanometer, a cup-type pressure gauge and other parts. When in use, the test section of the duct to be tested will be closed, the test fan air supply hose and the test section of the duct will be connected, the fan of the tester will be started, and the speed of the fan can be steplessly adjusted from slow to fast, so as to detect the air leakage.

[0003] The static pressure tube is an indispensable part of the air leakage tester. Usually, if there is a static pressure port on the pipeline, then the static pressure tube needs to be connected to the port. Otherwise, a hole with a diameter of 6 mm needs to be drilled on the surface of the pipeline. The static pressure tube is inserted into the inside of the tested pipeline and the surrounding of the static pressure tube needs to be sealed. The other end of the static pressure tube is connected to the control box of the air leakage tester. In actual use, it needs to be used in conjunction with external sealing equipment, which makes the test more cumbersome. Utility Model Content

[0004] The main purpose of the utility model is to provide a static pressure pipe structure of a pipeline air leakage tester, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a static pressure pipe structure of a pipeline air leakage tester, including a connecting hose, one end of the connecting hose is connected to the control box of the tester, and the other end of the connecting hose is installed with a test tube, and the test tube is made of hard material. A hard support tube is fixedly installed inside the connecting hose, and one end of the test tube is fully inserted into the interior of the connecting hose. The surface of the test tube is sleeved with an elastic sealing tube, and the sealing tube is arranged at the connection position of the connecting hose and the test tube.

[0006] The surface diameter of one end of the test tube is the same as the outer diameter of the connecting hose, and the surface diameter of the other end of the test tube can be installed in a full fit with the inner diameter of the connecting hose.

[0007] An L-shaped connecting rod is fixedly installed on the large outer diameter surface of the test tube, and a groove is opened on the inner side of the sealing tube. The shape of the groove is adapted to the shape of the connecting rod, and the connecting rod is located inside the groove.

[0008] Anti-slip rings are fixedly installed on the surfaces of both ends of the sealing tube, the distance between the two anti-slip rings is the wall thickness of the pipeline, and the anti-slip rings are made of elastic material.

[0009] The anti-slip ring and the sealing tube are an integrated structure.

[0010] There are two connecting rods, which are symmetrically located inside the sealing tube. Rings are fixedly installed at the ends of the two connecting rods. The inner diameter of the rings is larger than the outer diameter of the connecting hose. The rings, connecting rods and test tube are an integrated structure.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, by providing a test tube, a connecting hose and a sealing tube, when the test tube is installed, it can be closely fitted on the inner wall of the pressure port to ensure its sealing function, and the elasticity of the sealing tube can also make the connection between the connecting hose and the test tube stable, and the overall structure is very simple.

[0013] 2. In the utility model, a sealing tube and an anti-slip ring are provided, and the anti-slip ring on one side is bent obliquely and inserted into the inside of the pressure taking port, and the two anti-slip rings are clamped on the inner and outer sides of the pipe. At this time, whether positive pressure or negative pressure detection is performed, the sealing tube can be prevented from falling off, thereby ensuring higher stability of installation and use. When the sealing tube needs to be taken out from the pressure taking port, the test tube can be pulled out through the connecting rod first. At this time, there is enough space, which makes it more convenient to take out the sealing tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a static pressure pipe structure of a pipeline air leakage tester of the utility model;

[0015] Figure 2 This is a schematic diagram of the enlarged structure of the static pressure pipe position of a pipeline air leakage tester of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the collar position of the static pressure pipe structure of a pipeline air leakage tester of the utility model;

[0017] Figure 4 It is a schematic diagram of the support pipe position part of the static pressure pipe structure of a pipeline air leakage tester of the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the groove position part of the static pressure pipe structure of a pipeline air leakage tester.

[0019] In the figure: 1. connecting hose; 2. test tube; 3. support tube; 4. sealing tube; 5. connecting rod; 6. groove; 7. anti-slip ring; 8. collar. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-5 As shown, a static pressure pipe structure of a duct air leakage tester includes a connecting hose 1, one end of the connecting hose 1 is connected to the control box of the tester, and the other end of the connecting hose 1 is installed with a test tube 2, and the test tube 2 is made of hard material, which is convenient for insertion into the pressure port, and a hard supporting tube 3 is fixedly installed inside the connecting hose 1 to facilitate the connection between the connecting hose 1 and the test tube 2, one end of the test tube 2 is fully inserted into the connecting hose 1 to prevent the test tube 2 from falling, and the surface of the test tube 2 is sleeved with an elastic sealing tube 4, so that the installation of the sealing tube 4 is more stable, and the outer diameter of the sealing tube 4 is greater than 6 mm, and the sealing tube 4 is arranged at the connecting position of the connecting hose 1 and the test tube 2, which can ensure the sealing between the connecting hose 1 and the test tube 2.

[0022] When in use, directly insert the test tube 2 and the sealing tube 4 into the pressure port. Since the sealing tube 4 has a certain elasticity and its outer diameter is larger than the inner diameter of the pressure port, when the test tube 2 is installed, it can fit tightly on the inner wall of the pressure port to ensure its sealing function. The elasticity of the sealing tube 4 can also make the connection between the connecting hose 1 and the test tube 2 stable, and the overall structure is very simple, which is convenient for direct placement on the air leakage tester.

[0023] The surface diameter of one end of the test tube 2 is the same as the outer diameter of the connecting hose 1, and the surface diameter of the other end of the test tube 2 can be fully matched with the inner diameter of the connecting hose 1 for installation, thereby ensuring that the test tube 2 is installed firmly and at the same time ensuring that the inner wall of the sealing tube 4 is tightly attached to the surface of the test tube 2 and the connecting hose 1 during installation.

[0024] An L-shaped connecting rod 5 is fixedly installed on the large outer diameter surface of the test tube 2, and a groove 6 is opened on the inner side of the sealing tube 4. The shape of the groove 6 is adapted to the shape of the connecting rod 5. The connecting rod 5 is located inside the groove 6, and one end of the connecting rod 5 extends to the outside of the groove 6. Anti-slip rings 7 are fixedly installed on the surfaces of both ends of the sealing tube 4. The distance between the two anti-slip rings 7 is the wall thickness of the pipeline. The anti-slip rings 7 are made of elastic material, which is convenient for placing the anti-slip rings 7 inside the pipeline and can prevent the sealing tube 4 from falling off.

[0025] The user bends the anti-slip ring 7 on one side at an angle and inserts it into the pressure taking port, and clamps the two anti-slip rings 7 on the inner and outer sides of the pipe. At this time, whether positive pressure or negative pressure detection is performed, the sealing tube 4 can be prevented from falling off, ensuring higher stability of installation and use. At the same time, due to the different thicknesses of the inner walls of different pipes, the sealing tube 4 needs to be replaced, and the replacement method is also very simple. When the sealing tube 4 needs to be pulled out from the pressure taking port, the test tube 2 can be pulled out first through the connecting rod 5. At this time, there is enough space, which makes it more convenient to take out the sealing tube 4.

[0026] The anti-slip ring 7 and the sealing tube 4 are an integrated structure, which ensures the tightness of the connection between the anti-slip ring 7 and the sealing tube 4 and avoids the anti-slip ring 7 and the sealing tube 4 from being separated when the sealing tube 4 is taken out.

[0027] There are two connecting rods 5, which are symmetrically located inside the sealing tube 4. Rings 8 are fixedly installed at the ends of the two connecting rods 5. The inner diameter of the ring 8 is larger than the outer diameter of the connecting hose 1. The ring 8, the connecting rod 5 and the test tube 2 are an integrated structure. By moving the ring 8, the connecting rod 5 can be driven to move, so that the test tube 2 falls off the inside of the sealing tube 4, and the operation is more labor-saving and convenient.

[0028] It should be noted that the utility model is a static pressure pipe structure of a duct air leakage tester. When in use, the anti-slip ring 7 on one side is tilted and bent and inserted into the inside of the pressure taking port, and the two anti-slip rings 7 are clamped on the inside and outside of the pipe. When the sealing tube 4 needs to be taken out from the pressure taking port, the moving ring 8 can drive the movement of the connecting rod 5, so that the test tube 2 falls off the inside of the sealing tube 4. When the sealing tube 4 needs to be replaced, the sealing tube 4 can be directly removed and replaced with a new sealing tube 4.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A static pressure pipe structure of a pipeline air leakage tester, comprising a connecting hose (1), one end of the connecting hose (1) is connected to a control box of the tester, and the other end of the connecting hose (1) is installed with a test tube (2), the test tube (2) is made of hard material, and is characterized in that: A hard support tube (3) is fixedly installed inside the connecting hose (1), one end of the test tube (2) is fully inserted into the inside of the connecting hose (1), and a sealing tube (4) with elasticity is sleeved on the surface of the test tube (2), and the sealing tube (4) is arranged at the connection position between the connecting hose (1) and the test tube (2).

2. The static pressure pipe structure of a pipeline air leakage tester according to claim 1, characterized in that: The surface diameter of one end of the test tube (2) is the same as the outer diameter of the connecting hose (1), and the surface diameter of the other end of the test tube (2) can be fitted with the inner diameter of the connecting hose (1).

3. The static pressure pipe structure of a pipeline air leakage tester according to claim 2, characterized in that: An L-shaped connecting rod (5) is fixedly mounted on the large outer diameter surface of the test tube (2), and a groove (6) is provided on the inner side of the sealing tube (4). The shape of the groove (6) matches the shape of the connecting rod (5), and the connecting rod (5) is located inside the groove (6).

4. The static pressure pipe structure of a pipeline air leakage tester according to claim 1, characterized in that: Anti-slip rings (7) are fixedly mounted on the surfaces of both ends of the sealing tube (4); the distance between the two anti-slip rings (7) is the wall thickness of the pipe; and the anti-slip rings (7) are made of elastic material.

5. The static pressure pipe structure of a pipeline air leakage tester according to claim 4, characterized in that: The anti-slip ring (7) and the sealing tube (4) are an integrated structure.

6. The static pressure pipe structure of a pipeline air leakage tester according to claim 3, characterized in that: The number of the connecting rods (5) is two and they are symmetrically located inside the sealing tube (4). The ends of the two connecting rods (5) are fixedly mounted with collars (8), the inner diameter of the collars (8) being larger than the outer diameter of the connecting hose (1). The collars (8), the connecting rods (5) and the test tube (2) are an integrated structure.

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