Air pipe air tightness detection machine

Abstract

The utility model discloses an air pipe air tightness detection machine, which comprises a testing machine, a water spraying assembly and an air compressor set, the air compressor set is arranged on the right side of the testing machine close to the front side, supporting columns are fixedly installed at the tops of the front end and the rear end of the testing machine, the water spraying assembly is arranged at the tops of the supporting columns, and a nozzle is installed below the water spraying assembly. According to the air pipe air tightness detection machine, air is inflated into the air pipe through the air compressor unit, whether the air pipe leaks air or not is judged according to whether the internal air pressure is stable or not, and when air leakage happens to the air pipe, water in the water storage cavity at the bottom is pumped into the water spraying assembly and sprayed out through the spraying head; water is sprayed on the surface of the air pipe, so that bubbles appear at the air leakage position, and therefore, testers can determine the air leakage position conveniently, and follow-up marking and drying are carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to an air duct air tightness detection machine. Background Art

[0002] In industrial production and civil infrastructure construction, various metal pipes are widely used as gas and liquid transport carriers. During the pipeline laying process, pipe sections are usually connected by welding and other methods. However, the working conditions at the construction site are poor, and the sealing quality between pipe sections is difficult to detect. On-site inspection of the sealing between pipe sections becomes a problem. In addition, after long-term use, cracks may appear in the pipeline, and the sealing is difficult to ensure, which is prone to safety hazards. Such problems are particularly evident in large-diameter industrial pipelines. Designing a test bench that can conveniently detect the air tightness of pipelines meets the needs of actual pipeline installation and maintenance and repair. For example, the prior art: CN220170468U, a pipeline air tightness detector, includes a base, baffles are welded at both ends of the base, a top plate is welded on the top of the baffle, a fixing plate is welded on the base, a hair dryer is welded on one end of the base close to the fixing plate, the output end of the hair dryer is connected to the air inlet pipe through bolts, a limiting hole is provided on the fixing rod, a protrusion is installed in the limiting hole, a groove sealing ring is provided on the outside of the protrusion, a clamping device is installed on the baffle, a telescopic rod is installed on the top plate, a cross plate is welded on the output end of the telescopic rod, and an air pressure detector is welded on the cross plate.

[0003] There are other existing technologies:

[0004] CN203758696U, a pipeline air tightness testing platform;

[0005] CN220206993U, an air tightness detection device.

[0006] The above-mentioned prior art mentions a duct air tightness detection machine, which mostly pressurizes the inside of the pipeline so that the atmospheric pressure inside the pipeline is greater than the external atmospheric pressure, and determines whether there is a leak by the change in the pressure value. When the pressure value is stable, it means that the pipeline is sealed. When the pressure value after pressurization drops rapidly, it means that there is an air leak and the pipeline is sealed. It is unqualified and needs to be reworked. However, most detection machines can only detect whether there is a leak, but cannot detect the location of the leak. Manual search for the leak location is required, which is very troublesome and not conducive to subsequent repairs. Utility Model Content

[0007] The purpose of the utility model is to provide a duct air tightness detection machine to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a duct air tightness detection machine, including a testing machine, characterized in that: an inner cavity is opened inside the testing machine, a front blocking block is installed at the front of the inner cavity, a front cross bar is installed at the front of the front blocking block, one side of the front cross bar is rotatably installed at the front of the testing machine through a rotating shaft, a rear blocking block is arranged near the rear of the inner cavity, a rear cross bar is installed at the back of the rear blocking block, sliding cavities are arranged on the left and right sides of the testing machine, the left and right sides of the rear cross bar are inserted in the sliding cavities, a left sliding rod is inserted at the center of the left sliding cavity, and a right threaded rod is inserted at the center of the right sliding cavity, the left sliding rod and the right threaded rod are both installed on the rear cross bar, an air compressor unit is arranged on the right side of the testing machine near the front, and the air compressor unit and the front blocking block are connected by an air pipe.

[0009] Preferably, there is a water channel at the beginning of the bottom of the inner cavity, a water leakage hole is opened at the bottom of the water channel, a water storage chamber is installed at the bottom of the testing machine, the water storage chamber is connected to the inner cavity through the water leakage hole, support columns are fixedly installed on the top of the front and rear ends of the testing machine, a water spray assembly is arranged on the top of the support column, a nozzle is installed below the water spray assembly, a connecting pipe 1 is arranged on one side of the water spray assembly, a water pump 1 is arranged on one side of the connecting pipe 1, a connecting pipe 2 is arranged at the bottom center of the water pump 1, support frames are arranged around the connecting pipe 2, a water pump 2 is arranged at the bottom of the connecting pipe 2, and one side of the water pump 2 is connected to the outside of the water storage chamber.

[0010] Preferably, a support plate is provided below the front blocking block.

[0011] Preferably, a plug hole is provided on the side of the front cross bar.

[0012] Preferably, the front blocking block and the rear blocking block are mounted on the front cross bar and the rear cross bar by screws.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The duct air tightness tester installs the duct in the test machine, blocks the outlet with front and rear blocks, inflates the duct with air through the air compressor unit, and determines whether the duct is leaking based on whether the internal air pressure is stable. When the duct leaks, open the two water pumps to draw the water in the bottom water storage chamber into the water spray assembly and spray it out through the nozzle. The water is sprayed on the surface of the duct to cause bubbles to appear at the leaking position, which makes it convenient for the tester to determine the leaking position, and then mark and dry it.

[0015] 2. The air duct air tightness tester rotates the right threaded rod to move the rear horizontal bar forward in the sliding cavity, thereby shortening the distance between the front block and the rear block, so that the tester can detect air ducts of different lengths and can be used for air ducts of different diameters by replacing the front and rear block of different sizes.

[0016] 3. The air duct air tightness detection machine distinguishes leaking air ducts from qualified air ducts through two tests, and only performs water spray test on leaking air ducts, thereby reducing the number of subsequent drying air ducts and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a side schematic diagram of the structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the front horizontal bar of the utility model structure being opened;

[0020] Figure 4 This is a top view of the structure of the utility model;

[0021] Figure 5 for Figure 4 A cross-sectional view is shown.

[0022] In the figure: 1. test machine; 2. water spray assembly; 3. air compressor unit; 101. inner cavity; 102. front block; 103. front horizontal bar; 104. rear block; 105. rear horizontal bar; 106. sliding cavity; 107. left sliding rod; 108. right threaded rod; 109. support plate; 110. socket; 201. support column; 202. nozzle; 203. connecting pipe 1; 204. water pump 1; 205. connecting pipe 2; 206. support frame; 207. water pump 2; 208. water storage cavity; 209. waterway; 210. water leakage hole; 301. air pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example: See Figure 1 The utility model provides a technical solution: an air duct air tightness detection machine.

[0025] Among them, an inner cavity 101 is opened inside the testing machine 1, a front blocking block 102 is installed on the front of the inner cavity 101, a front cross bar 103 is installed on the front of the front blocking block 102, one side of the front cross bar 103 is rotatably installed on the front of the testing machine 1 through a rotating shaft, a rear blocking block 104 is arranged near the rear of the inner cavity 101, a rear cross bar 105 is installed on the back of the rear blocking block 104, sliding cavities 106 are arranged on the left and right sides of the testing machine 1, the rear cross bar 105 is inserted into the sliding cavity 106 on the left and right sides, a left sliding rod 107 is inserted in the center of the left sliding cavity 106, and a right threaded rod 108 is inserted in the center of the right sliding cavity 106, the left sliding rod 107 and the right threaded rod 108 are both installed on the rear cross bar 105, and the air compressor unit 3 and the front blocking block 102 are connected by an air pipe 301.

[0026] In this embodiment, the front block 102 and the rear block 104 are provided with grooves at the edge positions, and the air duct wall can be inserted into the grooves to be fixed. At the same time, the cushions of the two blocks 102 fill the two ends of the air duct and seal them. A hole is provided in the center of the front block 102, and the air pipe 301 is inserted into the hole and fixed. The air compressor unit 3 inflates the interior through the air pipe 301, and the gas passes through the front block 102 and fills the interior of the pipe. Continuous inflation increases the internal atmospheric pressure, and the air compressor unit 3 can read the air The air pressure value inside the duct is stable and will not leak when the air duct is well sealed. When the air duct is poorly sealed, the air pressure inside the duct will leak to the outside from the leak, and the air pressure value will drop accordingly. The air tightness of the duct is confirmed by the change in the air pressure value. The entire rear crossbar 105 is erected by the left sliding rod 107 and the right threaded rod 108. The right threaded rod 108 passes through the threaded hole on the right side of the rear crossbar 105. The front and rear ends of the right threaded rod 108 are connected by The bearing is raised so that it can rotate. The operator can hold the handle at the rear to rotate the right threaded rod 108. The thread on the right threaded rod 108 and the threaded hole are engaged, so that the rear crossbar 105 moves in the inner cavity 101. The left slide bar 107 on the other side provides support to ensure that the rear crossbar 103 does not tilt; the front crossbar 103 is rotated outward by the rotating shaft to open the front of the test machine 1, and the air duct is inserted from the opening and continuously pushed forward until one end of the air duct is against the rear block 104 and inserted into the gap to be fixed, and the front crossbar 103 is rotated to close the front end of the test machine 1, and then the right threaded rod 108 is rotated to push the rear crossbar 105, driving the rear block 104 to push the air duct forward until the front end of the air duct is inserted into the front block 102, and finally the air pipe 301 is inserted into the center of the front block 102 and fixed, and the air compressor unit 3 is started to perform an inflation test, and the change in the value of the air pressure inside the air duct measured by the air compressor unit 3 is used to determine whether it is qualified.

[0027] Among them, a water channel 209 begins to form at the bottom of the inner cavity 101, and a leakage hole 210 is opened at the bottom of the water channel 209. A water storage chamber 208 is installed at the bottom of the testing machine 1, and the water storage chamber 208 is connected to the inner cavity 101 through the leakage hole 210. Support columns 201 are fixedly installed on the top of the front and rear ends of the testing machine 1, and a water spray assembly 2 is arranged on the top of the support column 201. A nozzle 202 is installed below the water spray assembly 2, and a connecting pipe 203 is arranged on one side of the water spray assembly 2, and a water pump 204 is arranged on one side of the connecting pipe 203. A connecting pipe 205 is arranged at the bottom center of the water pump 1 204, and supporting frames 206 are arranged around the connecting pipe 205. A water pump 207 is arranged at the bottom of the connecting pipe 205, and one side of the water pump 207 is connected to the outside of the water storage chamber 208.

[0028] In this embodiment, some pure water is stored in the water storage chamber 208. The water in the water storage chamber 208 is pumped out by the water pump 204 and injected into the water pump 204 through the connecting pipe 205. The water pump 204 then injects the water into the water spray assembly 2 through the connecting pipe 203, and the water spray assembly 2 distributes the water to each nozzle 202. The support frame 206 supports and fixes the water pump 2 207. When the air compressor unit 3 determines that the air duct is not airtight, the water is evenly sprayed on the surface of the air duct through the nozzle 202, so that bubbles appear at the leaking position, thereby facilitating the test personnel to determine the leaking position, mark it, and then dry and remove the water. The sprayed water flows into the waterway 209 and returns to the water storage chamber 208 through the leaking hole 210, thereby forming a cycle. When the tested air duct is airtight and qualified, the front horizontal bar 103 is opened, and the right threaded rod 108 is rotated to push out and remove the air duct without the need for water spraying test, thereby reducing the pressure of the subsequent drying process.

[0029] A support plate 109 is disposed below the front blocking block 102 .

[0030] In this embodiment, the air duct can be placed on the support plate 109 before entering the inner cavity 101 and being inserted into the rear blocking block 104, thereby increasing the load-bearing position and providing labor-saving effect for the operator who moves the air duct.

[0031] A plug hole 110 is formed on the side of the front horizontal rail 103 .

[0032] In this embodiment, a fixing plate is installed at the position of the jack 110 and connected to the test machine 1. The fixing plate is also provided with a hole. The front crossbar 103 is rotated to the left and inserted into the fixing plate, so that the front block 102 extends into the inner cavity 101. The jack 110 is aligned and a pin is inserted into the hole to fix the front crossbar 103.

[0033] The front block 102 and the rear block 104 are mounted on the front cross bar 103 and the rear cross bar 105 by screws.

[0034] In this embodiment, the front blocking block 102 and the rear blocking block 104 can be removed, and the front and rear blocking blocks of different sizes can be used for air ducts of different diameters, thereby increasing the application range of the device.

[0035] Working principle: insert the air duct from the front opening of the test machine 1 and continue to push it forward until one end of the air duct rests on the rear block 104 and is inserted into the gap to be fixed, turn the front cross bar 103 to close the front end of the test machine 1, then turn the right threaded rod 108 to push the rear cross bar 105, drive the rear block 104 to push the air duct forward until the front end of the air duct is inserted into the front block 102, and finally the air pipe 301 is inserted into the center of the front block 102 and fixed, start the air compressor unit 3 for inflation test, and determine whether it is qualified by the change in the value of the air pressure inside the air duct measured by the air compressor unit 3. When the air duct is qualified, open the front cross bar 103, turn the right threaded rod 108 to push the air duct out and remove it, and install the next air duct. When the air duct is unqualified, the nozzle 202 evenly sprays the water in the water spray assembly 2 onto the surface of the air duct, so that bubbles appear at the leaking position. The operator marks the leaking position for subsequent repair, and then removes the air duct for drying.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duct air tightness testing machine, comprising a testing machine (1), characterized in that: The testing machine (1) has an inner cavity (101) therein, a front block (102) is mounted on the front of the inner cavity (101), a front crossbar (103) is mounted on the front of the front block (102), one side of the front crossbar (103) is rotatably mounted on the front of the testing machine (1) via a rotating shaft, a rear block (104) is arranged near the rear of the inner cavity (101), a rear crossbar (105) is mounted on the back of the rear block (104), and sliding cavities (106) are arranged on the left and right sides of the testing machine (1). The left and right sides of the rear cross bar (105) are inserted into the sliding cavity (106), the left sliding rod (107) is inserted in the center of the left sliding cavity (106), and the right threaded rod (108) is inserted in the center of the right sliding cavity (106). The left sliding rod (107) and the right threaded rod (108) are both installed on the rear cross bar (105). An air compressor unit (3) is arranged on the right side of the testing machine (1) near the front, and the air compressor unit (3) and the front block (102) are connected through an air pipe (301).

2. The air duct air tightness detection machine according to claim 1, characterized in that: A water channel (209) is formed at the bottom of the inner cavity (101), and a water leakage hole (210) is formed at the bottom of the water channel (209). A water storage chamber (208) is installed at the bottom of the test machine (1), and the water storage chamber (208) is connected to the inner cavity (101) through the water leakage hole (210). Support columns (201) are fixedly installed at the top of the front and rear ends of the test machine (1), and a water spray assembly (2) is arranged at the top of the support column (201). A water spray assembly (2) is installed below the water spray assembly (2). A spray head (202) is provided, a connecting pipe (203) is provided on one side of the water spray assembly (2), a water pump (204) is provided on one side of the connecting pipe (203), a connecting pipe (205) is provided at the center of the bottom of the water pump (204), a supporting frame (206) is provided around the connecting pipe (205), a water pump (207) is provided at the bottom of the connecting pipe (205), and one side of the water pump (207) is connected to the outside of the water storage chamber (208).

3. The air duct air tightness detection machine according to claim 1, characterized in that: A support plate (109) is provided below the front blocking block (102).

4. The air duct air tightness detection machine according to claim 1, characterized in that: The side surface of the front horizontal bar (103) is provided with an insertion hole (110).

5. The air duct air tightness detection machine according to claim 1, characterized in that: The front blocking block (102) and the rear blocking block (104) are mounted on the front crossbar (103) and the rear crossbar (105) by means of screws.

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