Corrugated pipe air tightness detection device

Abstract

The utility model relates to a bellows air tightness detection device, which comprises a support frame and a detection pipe, and is characterized in that the support frame is sequentially provided with a cylinder, a clamping platform and a bottoming platform from top to bottom; a plurality of sliding rails are installed on the supporting frame in parallel in the vertical direction, each sliding rail comprises a rail body, the rail bodies are installed on the two sides of the supporting frame, a plurality of bearings are horizontally installed in the rail bodies, and the bottom supporting platform and the clamping platform are located on the bearings. A containing hole is formed in the detection pipe, a medium inlet hole is formed in the side face of the detection pipe and communicated with the containing hole, and a sealing piece is arranged at the bottom of the detection pipe. According to the utility model, air tightness detection of corrugated pipe assemblies of different specifications can be realized through the arrangement of the chutes of different heights, and sealing of the tool during air tightness detection is realized through the pressure test pipe. The corrugated pipe assembly can be tested in various specifications on one device, the vacancy of corrugated pipe assembly testing is made up, and the testing efficiency of the corrugated pipe assembly and the accuracy and reliability of the testing result are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve testing and relates to a bellows air tightness detection device. Background Art

[0002] With the rapid development of the chemical industry, the number of pipelines with flammable, explosive and highly toxic media is increasing. The valves used in these pipelines have strict requirements for external leakage sealing. Ordinary valves can no longer meet the use requirements. Therefore, it is necessary to use a valve stem sealing structure with a bellows. The bellows are generally connected to the valve stem by welding. The sealing of the weld and the integrity of the bellows are related to the safety of the valve. However, its detection is difficult and the detection efficiency is low. Summary of the invention

[0003] The purpose of the utility model is to provide a bellows air tightness detection device, which can solve the above-mentioned problems and greatly improve the test efficiency of the bellows assembly as well as the accuracy and reliability of the test results.

[0004] According to the technical solution provided by the utility model: a bellows air tightness detection device includes a support frame and a detection tube, on which a cylinder, a clamping platform, and a bottom supporting platform are installed in sequence from top to bottom; the support frame is vertically parallel to a plurality of slide rails, the slide rails include a rail body, the rail body is installed on both sides of the support frame, a plurality of bearings are horizontally installed in the rail body, and the bottom supporting platform and the clamping platform are located on the bearings; a receiving hole is provided in the detection tube, a medium access hole is opened on the side of the detection tube, the medium access hole is connected to the receiving hole, and a sealing member is provided at the bottom of the detection tube.

[0005] As a further improvement of the utility model, the cylinder body is vertically installed on the top plate of the support frame, and the cylinder piston rod is vertically downward and installed with a pressure plate.

[0006] As a further improvement of the utility model, a limit plate is arranged at the front end of the rail body, and a pin shaft hole is opened at the rear end of the rail body.

[0007] As a further improvement of the utility model, the sealing element is an O-type sealing ring.

[0008] As a further improvement of the utility model, the rail body is made of C-shaped steel and is fixed to the left and right sides of the support frame by welding.

[0009] As a further improvement of the utility model, the bearing is mounted to the slide rail via a threaded fastener.

[0010] As a further improvement of the utility model, the bottom supporting platform and the clamping platform are welded by standard plates and profiles.

[0011] As a further improvement of the utility model, a mounting hole is provided in the middle of the clamping platform.

[0012] The positive effects of this application are:

[0013] The utility model can realize the air tightness test of bellows assemblies of different specifications by providing slideways of different heights, and realize the sealing of the tooling during the air tightness test through the pressure test tube. For the bellows assembly, multiple specifications of tests can be carried out on one device, which fills the gap in the bellows assembly test and greatly improves the test efficiency of the bellows assembly and the accuracy and reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the slide rail of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the clamping platform of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the pressure test tube of the utility model.

[0018] Figure 5 It is a structural schematic diagram of the bellows assembly of the utility model.

[0019] Figure 6 It is a schematic diagram of the structure of the utility model when it is working.

[0020] Figure 1-Figure 6 It includes: 1. support frame; 2. slide rail; 21. slide groove; 22. limit plate; 3. fixed platform; 4. clamping platform; 5. pressure test tube; 6. pressure plate; 7. cylinder; 8. bearing; 9. bellows assembly, etc. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the utility model, 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 of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the utility model described herein. In addition, similar terms such as "including" and "having" mean that in addition to those contents already listed in "including" and "having", other contents that have not been listed can also be "included" and "having"; for example, a process, method, system, product or device that can include a series of steps or units is not necessarily limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Due to the angle of the drawing, some components may not be drawn, but their positions and connection relationships can be partially understood based on the text expression.

[0025] like Figure 1 As shown, the utility model is a bellows air tightness detection device, comprising a support frame 1 and a detection tube 5, on which a cylinder 7, a clamping platform 4, and a bottom supporting platform 3 are sequentially installed from top to bottom.

[0026] The cylinder body of the cylinder 7 is vertically mounted on the top plate of the support frame 1 , and the piston rod of the cylinder 7 is vertically downward and mounted with a pressure plate 6 .

[0027] The support frame 1 is vertically parallelly mounted with several slide rails 2 , the slide rails 2 include rail bodies 21 , the rail bodies 21 are mounted on both sides of the support frame 1 , several bearings 8 are horizontally mounted in the rail bodies 21 , and the bottom support platform 3 and the clamping platform 4 are located on the bearings 8 .

[0028] like Figure 2 As shown, a limiting plate 22 is provided at the front end of the rail body 21 , and a pin hole is opened at the rear end of the rail body 21 for installing the pin. The pin and the limiting plate 22 limit the bottom supporting platform 3 and the clamping platform 4 .

[0029] like Figure 4 As shown, a receiving hole is provided in the detection tube 5 for placing the bellows assembly 9 to be detected; a medium inlet hole 51 is opened on the side of the detection tube 5, and the medium inlet hole 51 is connected to the receiving hole; a sealing member 52 is provided at the bottom of the detection tube 5 for sealing. The sealing member 52 is an O-ring.

[0030] like Figure 5 As shown, the bellows assembly 9 includes a valve stem 91 , a bellows 92 is provided on the periphery of the valve stem 91 , the bottom of the bellows 92 and the valve stem 91 are sealed by welding, and a medium inlet hole 921 is left between the top of the bellows 92 and the valve stem 91 .

[0031] The rail body 21 is made of C-shaped steel and is fixed to the left and right sides of the support frame 1 by welding.

[0032] The bearing 8 is mounted to the slide rail 2 by means of threaded fasteners.

[0033] The bottom supporting platform 3 and the clamping platform 4 are welded by standard plates and profiles, and slide back and forth in the slide rail 2 through the bearing 8.

[0034] like Figure 3 As shown, a mounting hole 4-1 is provided in the middle of the clamping platform 4, and the upper flange of the bellows 92 is clamped in the mounting hole 4-1.

[0035] The function of the bottom supporting platform 3 is to support the bottom of the bellows 92 to prevent it from over-extending.

[0036] The working process of the utility model is as follows:

[0037] like Figure 6 As shown, the bellows 92 in the bellows assembly 9 is installed in the mounting hole 4-1 of the clamping platform 4. The clamping platform 4 can slide forward and backward in the slide rail 2 through the bearing 8, and the bottom platform 3 limits the bellows 92. The detection tube 5 is inserted into the upper plane of the bellows assembly 9, and the detection tube 5 is pressed by the pressing plate 6. The seal 52 is compressed to achieve the sealing of the detection tube 5 and the clamping platform 4. The gas medium enters the bellows 92 through the medium inlet hole 51 and the medium inlet hole 921. Soap water is applied to the outer periphery of the bellows 92. If there is leakage at the weld and the bellows 92, there will be foam.

[0038] The slide rails 2 of different heights can be adapted to detect bellows assemblies 9 of different specifications.

[0039] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A bellows air tightness detection device, comprising a support frame (1) and a detection tube (5), characterized in that: A cylinder (7), a clamping platform (4), and a bottom supporting platform (3) are sequentially installed on the support frame (1) from top to bottom; a plurality of slide rails (2) are installed in parallel in a vertical direction on the support frame (1); the slide rails (2) include a rail body (21); the rail body (21) is installed on both sides of the support frame (1); a plurality of bearings (8) are horizontally installed in the rail body (21); the bottom supporting platform (3) and the clamping platform (4) are located on the bearings (8); a receiving hole is provided in the detection tube (5); a medium inlet hole (51) is opened on the side of the detection tube (5); the medium inlet hole (51) is connected to the receiving hole; and a sealing member (52) is provided at the bottom of the detection tube (5).

2. The bellows air tightness detection device according to claim 1, characterized in that: The cylinder body of the air cylinder (7) is vertically mounted on the top plate of the support frame (1), and the piston rod of the air cylinder (7) is vertically downward and mounted with a pressure plate (6).

3. The bellows air tightness detection device according to claim 1, characterized in that: A limit plate (22) is provided at the front end of the rail body (21), and a pin hole is provided at the rear end of the rail body (21).

4. The bellows air tightness detection device according to claim 1, characterized in that: The sealing member (52) is an O-ring.

5. The bellows air tightness detection device according to claim 1, characterized in that: The rail body (21) is made of C-shaped steel and is fixed to the left and right sides of the support frame (1) by welding.

6. The bellows air tightness detection device according to claim 1, characterized in that: The bearing (8) is mounted to the slide rail (2) by threaded fasteners.

7. The bellows air tightness detection device according to claim 1, characterized in that: The bottom supporting platform (3) and the clamping platform (4) are welded from standard plates and profiles.

8. The bellows air tightness detection device according to claim 1, characterized in that: A mounting hole (4-1) is provided in the middle of the clamping platform (4).

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