Flange connecting pipe leakage testing device

Abstract

The utility model relates to the technical field of automobile parts, and particularly discloses a flange connecting pipe leakage testing device, which comprises a flange connecting pipe body, a leakage testing device base body and a water tank, the leakage testing device base body is C-shaped, an extrusion mechanism is arranged at the upper end part of the leakage testing device base body, and an O-shaped sealing gasket is arranged at the bottom of the flange connecting pipe. The flange connecting pipe body is tightly pressed through the pressing block to enable the O-shaped sealing gasket to generate plastic deformation, so that the combination face of the flange connecting pipe body and the O-shaped sealing gasket achieves the sealing effect, compressed air is introduced into the other end through the compressed air pipe and placed into a water tank, and whether the flange connecting pipe body is qualified or not is judged by observing the bubble condition in the water tank. According to the utility model, the leakage test is carried out on the flange connecting pipe body, through the leakage test on the flange connecting pipe body, the unnecessary rework cost is saved, the labor intensity is reduced, the production efficiency and the product yield are improved, and the quality risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a flange pipe leakage testing device. Background Art

[0002] The flange pipe is generally installed on the body of an air-cooled diesel engine. It is a device that connects a duplex hydraulic pump to a lifting device. It mainly plays a connecting role. Under the action of the bolt preload, the flange pipe presses the sealing gasket between the sealing surfaces. The pressure applied to the unit area must reach a certain value to deform the gasket and compact it. The groove formed by machining on the sealing surface is filled with the sealing gasket, forming the initial sealing condition and playing the role of sealing connection.

[0003] During the installation of an air-cooled diesel engine, the oil pipe and the engine body usually need to be connected through a flange connection. Bolts are generally used to connect the parts through the flange connection. When the duplex hydraulic pump is working, a large oil pressure will be generated. If there is a defect in the flange connection, leakage will occur, which will affect the normal operation of the engine and must be replaced, resulting in high quality costs.

[0004] At present, there is a lack of a dedicated leak test system for flange pipes on the market. During each inspection, the staff can only observe the defects on the surface of the flange pipe with the naked eye. There is no inspection method to detect the internal leakage defects of the flange pipe, resulting in a low yield rate. The defects of the flange pipe can only be discovered during the whole machine test, which requires the engine to be reworked and reassembled, and there are certain quality risks. Therefore, the existing flange pipe inspection method is more troublesome, inefficient and difficult to detect, which is not convenient for daily flange pipe inspection and testing. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a flange pipe leak testing device to solve the technical problem that the existing flange pipe detection method has low detection efficiency and is relatively troublesome, resulting in difficult detection.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A flange pipe leak test device comprises a flange pipe body, a leak test device base and a water tank, the leak test device base is C-shaped, an extrusion mechanism is arranged at the upper end of the leak test device base, a fixing mechanism is arranged at the lower end of the leak test device base, the flange pipe body is connected with the fixing mechanism, the top of the flange pipe body is matched with the extrusion mechanism, a conduit joint is arranged at one end of the flange pipe body away from the fixing mechanism, the conduit joint is fixedly connected with an air guide mechanism, the extrusion mechanism comprises a bolt rod with a hammer, a wrench rod and a pressure block, the fixing mechanism comprises a fixed base, an O-type sealing gasket and a positioning pin, the air guide mechanism comprises an air conduit, a compressed air air pipe and an air pipe valve, and an air pump is connected at one end of the compressed air air pipe away from the air conduit.

[0010] Preferably: the hammer bolt rod is threadedly connected to the upper end of the leak test device base, the wrench rod is fixedly connected to a section of the hammer bolt rod located above the leak test device base, and one end of the hammer bolt rod located inside the leak test device base is fixedly connected to the pressure block.

[0011] Preferably: the inner side of the lower half of the base of the leak test device is fixedly connected to the fixed base, and the top surface of the fixed base is provided with an O-type sealing gasket and a plurality of positioning pins.

[0012] Preferably, the pipe opening at one end of the flange pipe body close to the fixed base is matched with the O-type sealing gasket, and the mounting hole at one end of the flange pipe body close to the fixed base is matched with the positioning pin.

[0013] Preferably, the top of the flange pipe body is matched with the pressing block.

[0014] Preferably, a side of the conduit connector away from the flange connecting pipe body is fixedly connected to the air conduit.

[0015] Preferably, the air conduit is fixedly connected to the compressed air trachea, and a trachea valve is arranged in the middle section of the compressed air trachea.

[0016] Preferably, the water tank is filled with water, the flange connecting body is entirely located inside the water tank, and the flange connecting body is entirely covered by water.

[0017] (III) Beneficial effects

[0018] 1. Place an O-ring sealing gasket at the bottom of the flange pipe, and use a pressure block to press the flange pipe body to cause plastic deformation of the O-ring sealing gasket, so that the joint surface of the flange pipe body and the O-ring sealing gasket achieves a sealing effect. At the other end, compressed air is connected through a compressed air pipe and placed in a water tank. By observing the bubbles in the water tank, it is judged whether the flange pipe body is qualified to achieve the purpose of leak testing, so that the application has the effect of leak testing the flange pipe body. Through the leak testing of the flange pipe body, unnecessary rework costs are saved, labor intensity is reduced, production efficiency and product yield are improved, and quality risks are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0020] Figure 1 This is an overall structural diagram of the device of the utility model.

[0021] Legend: 1. Leak test device base; 2. Bolt rod with hammer; 3. Wrench rod; 4. Pressure block; 5. Flange pipe; 6. Conduit joint; 7. Fixed base; 8. O-ring gasket; 9. Locating pin; 10. Air duct; 11. Compressed air pipe; 12. Water tank; 13. Air pipe valve. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a flange pipe leak test device, which effectively solves the problem that the existing flange pipe detection method has low detection efficiency and is relatively troublesome, resulting in difficult detection.

[0023] like Figure 1 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the existing flange pipe detection method has low detection efficiency and is relatively troublesome, resulting in difficult detection. The overall idea is as follows:

[0024] In view of the problems existing in the prior art, the utility model provides a flange pipe leak testing device, including a flange pipe body 5, a leak testing device base 1 and a water tank 12, the leak testing device base 1 is C-shaped, the upper end of the leak testing device base 1 is provided with an extrusion mechanism, the lower end of the leak testing device base 1 is provided with a fixing mechanism, the flange pipe body 5 is connected to the fixing mechanism, the top of the flange pipe body 5 is adapted to the extrusion mechanism, the end of the flange pipe body 5 away from the fixing mechanism is provided with a duct joint 6, the duct joint 6 is fixedly connected with an air guide mechanism, the extrusion mechanism includes a hammer bolt rod 2, a wrench rod 3 and a pressure block 4, the fixing mechanism includes a fixed base 7, an O-type sealing gasket 8 and a positioning pin 9, the air guide mechanism includes an air duct 10, a compressed air pipe 11 and an air pipe valve 13, and the end of the compressed air pipe 11 away from the air duct 10 is connected to an air pump.

[0025] The hammer bolt rod 2 is threadedly connected to the upper end of the leakage test device base 1, the wrench rod 3 is fixedly connected to a section of the hammer bolt rod 2 located above the leakage test device base 1, and the end of the hammer bolt rod 2 located on the inner side of the leakage test device base 1 is fixedly connected to the pressure block 4.

[0026] The inner side of the lower half of the base 1 of the leak test device is fixedly connected to a fixed base 7 , and an O-type sealing gasket 8 and a plurality of positioning pins 9 are arranged on the top surface of the fixed base 7 .

[0027] The pipe opening of the flange pipe body 5 close to the fixed base 7 is matched with the O-type sealing gasket 8, and the mounting hole of the flange pipe body 5 close to the fixed base 7 is matched with the positioning pin 9.

[0028] The top of the flange pipe body 5 is matched with the pressing block 4 .

[0029] The side of the conduit connector 6 away from the flange connecting body 5 is fixedly connected to the air conduit 10 .

[0030] The air conduit 10 is fixedly connected to a compressed air pipe 11 , and a pipe valve 13 is arranged in the middle section of the compressed air pipe 11 .

[0031] The water tank 12 is filled with water, the flange pipe body 5 is entirely located inside the water tank 12 , and the flange pipe body 5 is entirely covered by water.

[0032] Working principle:

[0033] By welding a fixed base 7 with a positioning pin 9 on the leak test device base 1, the flange pipe body 5 equipped with an O-ring sealing gasket 8 is fixed in position by the positioning pin 9, the hammer bolt rod 2 set on the leak test device base 1 is screwed downward to press the flange pipe body 5, tighten the conduit joint 6, connect the air conduit 10 and the compressed air air pipe 11, immerse the leak test device equipped with the flange pipe body 5 in the water tank 12, open the air pipe valve 13, inflate and let it stand for three minutes, and observe whether there are bubbles in the water tank 12 to detect whether the flange pipe body 5 has defects, determine the qualified status of the product, and achieve the purpose of testing the flange pipe body 5. After the detection is completed, close the air pipe valve 13, screw the hammer bolt rod 2 upward, loosen the conduit joint 6, remove the flange pipe body 5, and use the same method to detect the next flange pipe body 5.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A flange pipe leak testing device, comprising a flange pipe body (5), characterized in that: The invention comprises a leak test device base (1) and a water tank (12), wherein the upper end of the leak test device base (1) is provided with a squeezing mechanism, the lower end of the leak test device base (1) is provided with a fixing mechanism, the flange pipe body (5) is connected to the fixing mechanism, the top of the flange pipe body (5) is adapted to the squeezing mechanism, the end of the flange pipe body (5) away from the fixing mechanism is provided with a conduit joint (6), and the conduit joint (6) is fixedly connected to a gas guide mechanism; The extrusion mechanism comprises a bolt rod with a hammer (2), a wrench rod (3) and a pressing block (4); The fixing mechanism comprises a fixing base (7), an O-type sealing gasket (8) and a positioning pin (9); The air guide mechanism comprises an air duct (10), a compressed air trachea (11) and a trachea valve (13).

2. A flange pipe leak testing device as claimed in claim 1, characterized in that: The hammer bolt rod (2) is threadedly connected to the upper end of the leakage test device base (1), the wrench rod (3) is fixedly connected to the hammer bolt rod (2), and one end of the hammer bolt rod (2) located inside the leakage test device base (1) is fixedly connected to a pressure block (4).

3. A flange pipe leak testing device as claimed in claim 2, characterized in that: The inner side of the lower half of the leak test device base (1) is fixedly connected to a fixed base (7), and the top surface of the fixed base (7) is provided with an O-type sealing gasket (8) and a positioning pin (9).

4. A flange pipe leak testing device as claimed in claim 3, characterized in that: The pipe opening of the flange pipe body (5) close to one end of the fixed base (7) is matched with the O-type sealing gasket (8), and the mounting hole of the flange pipe body (5) close to one end of the fixed base (7) is matched with the positioning pin (9).

5. A flange pipe leak testing device as claimed in claim 4, characterized in that: The top of the flange pipe body (5) is matched with the pressing block (4).

6. A flange pipe leak testing device as claimed in claim 5, characterized in that: The side of the conduit joint (6) away from the flange connecting pipe body (5) is fixedly connected to the air conduit (10).

7. A flange pipe leak testing device as claimed in claim 6, characterized in that: The air conduit (10) is fixedly connected to a compressed air air pipe (11), and an air pipe valve (13) is arranged in the middle section of the compressed air air pipe (11).

8. A flange pipe leak testing device as claimed in claim 1, characterized in that: The water tank (12) is filled with water, the flange connecting pipe body (5) is entirely located inside the water tank (12), and the flange connecting pipe body (5) is entirely covered by water.

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