CN218566802U

CN218566802U - Bellows airtightness detection device

Info

Publication number: CN218566802U
Application number: CN202223070962.3U
Authority: CN
Inventors: 戴伟; 张作伟; 张普天; 任福森
Original assignee: Dandong Hesheng Sealing Co ltd
Current assignee: Dandong Hesheng Sealing Co ltd
Priority date: 2022-11-20
Filing date: 2022-11-20
Publication date: 2023-03-03
Anticipated expiration: 2032-11-20

Abstract

The patent application provides a corrugated pipe airtightness detection device, which comprises a clamping module, a compression power module, an air source module and a water seal box; the water seal box is used for packaging the card loading module and the detected metal corrugated pipe seal loaded and clamped on the card loading module, and a water communication interface communicated with a water source is arranged on the water seal box; the compression power module provides compression power, and the air supply module is sealed for examining the metal bellows and provides the source of inflation air. The technical scheme creates conditions for automatic detection operation, and can further improve the detection efficiency.

Description

Bellows airtightness detection device

Technical Field

The application relates to a functional assembly technical performance quality detection device, in particular to a sealing performance quality detection device of a corrugated pipe sealing assembly.

Background

The metal corrugated pipe seal has the technical characteristics of good floatability, high temperature resistance and low temperature resistance, eliminates a secondary sealing structure in installation and use, and is most widely applied in the petroleum and petrochemical industry. The corrugated pipe is manufactured by welding a plurality of stamped stainless steel circular ring pieces, the quality of a welding seam is one of key technical factors for determining the quality of a corrugated pipe sealing product, and whether the metal corrugated pipe has leakage hidden danger needs to be checked by a certain detection means. Figure 1 shows a typical detection arrangement: the two ends of the corrugated pipe are provided with sealing rubber plates and clamped between the pressing plate 43 and the bracket bottom plate 41, and the sealing inner cavity of the corrugated pipe is communicated with the nitrogen gas charging tank through the vent holes of the bottom plate; the screw 40, which is screwed into a nut 44 on the top plate 42 of the bracket, is pressed against the bellows seal assembly 6 by a pressure plate 43 at its bottom end when it is screwed in. Let in nitrogen gas after, again with a whole set of detection device immersion water, whether have the bubble escape to judge product welding quality through detecting sealed, shift out from the water again, the adjustment sticiss the pressure value, go into water once more and detect, the difference sticiss the dynamics need go into water repeatedly, go out the water operation, to detecting the operation personnel, should have constructional device not only hard, waste time, still cause the operating efficiency low, if sealed to the great bellows of specification model, above-mentioned technical problem is just more outstanding.

Disclosure of Invention

The invention aims to improve the detection operation efficiency, and can still finish the welding air tightness detection operation under the condition of saving time-consuming and labor-consuming operations of entering a pool and moving out a water body, so that the corrugated pipe air tightness detection device is provided.

The application provides an airtight detection device technical scheme of bellows, its main technical content is: a kind of airtight checkout gear of corrugated pipe, this apparatus makes up and includes installing the module of the card, compressing the power module, air supply module and water seal tank;

the clamping module is used for clamping the seal of the detected metal corrugated pipe in a sealing manner;

the water seal box is fixed on the working platform and used for packaging the card loading module and the detected metal corrugated pipe seal loaded and clamped on the card loading module, and a water communication interface communicated with a water source is arranged on the water seal box;

the compression power module is used for adjusting the sealed compression state of the metal corrugated pipe to be detected of the clamping module and providing power for compression power;

the gas source module is used for providing gas supply of an inflation gas source for the seal of the metal corrugated pipe to be detected in the clamping module.

In one preferred embodiment of the above overall technical solution, the clamping module includes a chassis and a pressure plate, the chassis is hermetically fixed on the water seal box, the chassis is provided with a ventilation port penetrating through the water seal box and communicating with the air circuit of the air source module, and the pressure rod on the outer side of the pressure plate is in transmission connection with the compression power module.

In a preferred embodiment of the above overall technical solution, the compression power module is a cylinder, and a piston rod of the cylinder is connected to the bolt pressure rod shaft.

In one preferred aspect of the above overall technical solution, the water-sealed box is a water-sealed box body formed by hermetically assembling a transparent box wall and two end covers.

In one preferred embodiment of the above integral technical solution, the water sealed tank is provided with a transparent window thereon.

The technical scheme of the airtight detection device of bellows that this patent application discloses has overcome prior art detection operation and has wasted time, hard, the low technical defect of operating efficiency, once soaks and can realize the adjustment and the detection operation of multistate condition, especially has created the condition for full automatization detection operation, can make detection efficiency further promote.

Drawings

FIG. 1 is a view showing the assembly structure of a conventional detecting device.

Fig. 2 is a general assembly structure diagram of the present patent application.

Fig. 3 is an enlarged view of the water seal tank.

Detailed Description

The device for detecting the airtightness of the corrugated pipe comprises a clamping module, a compression power module 3, an air source module and a water seal box 20;

and the clamping module is used for sealing and clamping the metal corrugated pipe seal 6 to be detected.

The water seal box 20 is fixed on the working platform 1 and used for packaging a clamping module which is clamped with the metal corrugated pipe seal 6 to be detected, and a transparent window is arranged on the water seal box.

In the water-sealed box 20 of the present embodiment, as shown in fig. 3, a transparent box wall 21 and two end covers 22 and 23 are hermetically assembled to form a water-sealed box body, a water connection port 14 communicated with a water source is arranged on the water-sealed box 20, the water source is a water tank 7, and a water pipe of the water tank 7 communicated with the water connection port 14 is provided with a water pump 8 and an electric control valve 9.

The transparent box wall 21 is convenient for observing whether bubbles escape from the internal corrugated pipe in the detection state.

The clamping module is shown in fig. 2 and fig. 3 in an embodiment, and includes a chassis 4 and a pressure plate 5, the to-be-detected metal bellows seal 6 is hermetically clamped between a sealing gasket of the chassis 4 and a sealing gasket on the pressure plate 5, the chassis 4 is hermetically fixed on an outer end cover 22 of a water-sealed tank 20, and a ventilation interface 11 which penetrates through the outer end cover 22 and enables an inner cavity of the bellows to be communicated with an air path of the air source module is arranged on the chassis 4.

The air source module is a nitrogen tank 10 in the embodiment, the nitrogen tank 10 is communicated with the ventilation interface 11 through an air pipe 12, and an air valve is arranged on the air pipe 12.

And the outer side pressure lever of the pressure plate 5 is in transmission connection with the compression power module.

The compression power module 3, preferably an air cylinder, is fixedly assembled on an inner end cover 23 of the water seal box 20, and a piston rod of the compression power module is connected with a coaxial spool of an outer rod of the pressure plate 5, so as to provide compression power in different compression states for the clamped metal corrugated pipe seal 6, and meet corrugated pipe detection under different compression detection conditions.

As described above, the installation of the clamping module in the water seal tank 20, the clamping of the metal bellows seal 6 to be tested, and the connection installation with the compression power module and the air source module are completed, a water filling cavity 13 surrounding the clamping module and the metal bellows seal 6 to be tested clamped thereon is formed in the water seal tank 20, the electric control valve 9 is started, water is filled into the water filling cavity 13, the air valve is opened, nitrogen gas with a certain pressure is filled into the metal bellows seal 6 to be tested, the air cylinder or the hydraulic cylinder is started, the pressure plate 5 is driven to and fro, and whether the bellows has a bubble escape phenomenon or not is observed under different compression conditions.

This scheme constitutes to realize automated inspection and has created the condition, and operating personnel can realize bellows seal's automated inspection through control compression power module, automatically controlled valve 9 and pneumatic valve.

Claims

1. The airtight detection device for the corrugated pipe is characterized by comprising a clamping module, a compression power module (3), an air source module and a water seal box (20);

the clamping module is used for sealing and clamping the seal (6) of the detected metal corrugated pipe;

the water seal box (20) is fixed on the working platform (1) and used for packaging the clamping module and the detected metal corrugated pipe seal (6) clamped on the clamping module, and a water connection port (14) communicated with a water source is arranged on the water seal box;

the compression power module (3) is a power assembly for adjusting the sealing compression state of the metal corrugated pipe to be detected of the clamping module and providing compression power;

the gas source module is used for providing gas supply of an inflation gas source for the detected metal corrugated pipe seal (6) in the clamping module.

2. The air tightness detection device for the corrugated pipe as claimed in claim 1, wherein the clamping module comprises a chassis (4) and a pressure plate (5), the chassis (4) is hermetically fixed on a water seal box (20), the chassis (4) is provided with a ventilation interface (11) which penetrates through the water seal box and is communicated with the air circuit of the air source module, and an outer pressure rod of the pressure plate (5) is in transmission connection with the compression power module (3).

3. The air tightness detecting device for corrugated pipes according to claim 1 or 2, wherein the compression power module is a cylinder, and a piston rod of the cylinder is coupled to a bolt pressure rod shaft.

4. The bellows airtightness detection apparatus according to claim 1 or 2, wherein the water-tight tank (20) is a water-tight tank body formed by hermetically fitting a transparent tank wall (21) and end caps.

5. The bellows gas-tightness detection device according to claim 1 or 2, characterized in that said water-tight box (20) is provided with a transparent window.