CN109483447B

CN109483447B - Explosion-proof airtight clamp for condenser

Info

Publication number: CN109483447B
Application number: CN201811528084.0A
Authority: CN
Inventors: 石超; 文飞燕; 郭文平
Original assignee: Guizhou Yonghong Aviation Machinery Co Ltd
Current assignee: Guizhou Yonghong Aviation Machinery Co Ltd
Priority date: 2018-12-13
Filing date: 2018-12-13
Publication date: 2020-11-20
Anticipated expiration: 2038-12-13
Also published as: CN109483447A

Abstract

The invention discloses an explosion-proof airtight clamp for a condenser, which comprises an airtight plug (1), a flange plate hexagon nut (2), a first pressing plate (3), a first rubber pad (4), a spring (5), a sleeve (6), a pull rod (7), a bottom plate (8), a second rubber pad (9), a second pressing plate (10) and an airtight joint (11). According to the invention, the pull rod (7) connects the internal expansion type airtight clamps at two sides, so that the serious risk of hurting people due to the ejection of the clamps with overlarge test pressure in the airtight test is avoided.

Description

Explosion-proof airtight clamp for condenser

Technical Field

The invention relates to a combined clamp for explosion-proof airtight assembly positioning of a condenser, in particular to a device for performing an airtight sealing test by matching with a product standard.

Background

The condenser is divided into left and right symmetrical parts and mainly comprises a core subassembly, a hot edge inlet subassembly, a hot edge outlet subassembly, a cold edge inlet subassembly, a cold edge outlet subassembly and the like, wherein the whole core subassembly is formed by vacuum brazing, and the rest subassemblies are formed by argon arc welding.

As shown in figure 1, the product is axially symmetric in whole, and the performance of the product has two important indexes: firstly, the hot edge is at 0.416MPa (gauge pressure) and the cold edge is at 0.098MPa (gauge pressure), the temperature is kept for 5min, and the leakage is not allowed to occur in the two cavities; and secondly, performing a 0.91MPa (gauge pressure) pressure test on the inner cavity of the hot edge of the product, keeping for 5min, and not allowing deformation and leakage.

Disclosure of Invention

The invention aims to provide an explosion-proof airtight clamp for a condenser, which meets the following test requirements that the hot edge is at 0.416MPa (gauge pressure) and the cold edge is at 0.098MPa (gauge pressure), the hot edge and the cold edge are kept for 5min, and leakage is not allowed to occur in two cavities; and (3) carrying out a 0.91MPa (gauge pressure) pressure test on the inner cavity of the hot edge of the product, keeping for 5min, and not allowing deformation and leakage. Meanwhile, in order to prevent the clamp from causing accidents that the airtight plug and the joint catapult and injure people in the pressure maintaining process, the clamp has an explosion-proof function at the same time, the airtight plug and the joint are required to be connected in a closed cavity of a product, the clamp is convenient to assemble and disassemble, and the product is not allowed to be collided and scratched.

The invention is realized by the following technical scheme:

the explosion-proof airtight clamp for the condenser comprises an airtight plug, a flange plate hexagon nut, a first pressing plate, a first rubber pad, a spring, a sleeve, a pull rod, a bottom plate, a second rubber pad, a second pressing plate and an airtight joint;

one end of the pull rod is connected with the airtight plug through a sleeve, a spring is arranged in the sleeve, the pull rod and the airtight plug are respectively arranged at two ends of the spring, and a first rubber pad, a first pressing plate and a flange plate hexagon nut are sequentially connected to the airtight plug and the side close to the sleeve;

the other end of the pull rod is connected with an airtight joint, and the airtight joint is sequentially connected with the bottom plate, the second rubber pad and the second pressing plate on the side close to the pull rod.

Preferably, the pull rod comprises a rod body, one end of the rod body is connected with the T-shaped structure, and the other end of the rod body is connected with the disc structure of which the outer diameter is larger than that of the rod body.

Preferably, one end of the sleeve is provided with a cylindrical hole, the other end of the sleeve is provided with a waist-shaped hole, and the waist-shaped hole is communicated with the cylindrical hole.

Preferably, the airtight plug comprises a first thread section and a second thread section which are arranged on the surface, and a disc section is arranged between the first thread section and the second thread section.

Preferably, a hollow pipeline is arranged in the airtight joint along the axis direction of the airtight joint, an air inlet is arranged in the direction perpendicular to the axis direction, two sections of threads are arranged on the surface of the airtight joint at intervals, and a T-shaped groove is formed in one end of the airtight joint.

The beneficial effects of the invention are embodied in the following aspects:

1. the assembly and the manufacture are relatively simple, and the use process is more convenient;

2. the clamp is rotationally fixed by the T-shaped groove, the stroke is controlled by the spring, and the airtight sealing test is carried out by matching with a product standard, so that the safety of the clamp is high, no leakage exists in the test process, and the product appearance is not scratched, bumped or gouged.

3. The clamp meets the performance requirement and the installation requirement, and has good use effect and stable quality.

4. The smooth delivery of the product is ensured, and meanwhile, good economic benefits are created.

Drawings

FIG. 1 is a schematic diagram of the product structure;

FIG. 2 is a schematic view of a clamp configuration;

FIG. 3 is a simplified product and fixture assembly;

FIG. 4 is a top view of FIG. 3;

FIG. 5 is an airtight plug;

FIG. 5a is a left side view of FIG. 5;

FIG. 6 is a simplified diagram of an assembly structure of the airtight plug;

FIG. 7 is a sleeve;

FIG. 7a is a schematic cross-sectional view taken along line A-A of FIG. 7;

FIG. 8 is a schematic view of the structure of the tie rod and the airtight plug;

FIG. 9 is a hermetic connection;

FIG. 10 is a drawbar;

FIG. 10a is a right side view of FIG. 10;

FIG. 11 is a schematic view of the airtight fitting assembly;

FIG. 12 is a schematic view of a tie rod and gas-tight joint arrangement;

fig. 13 is a three-dimensional view of a product and fixture assembly.

Detailed Description

The invention is further described with reference to the accompanying drawings, but the scope of protection claimed is not limited thereto.

As shown in fig. 2, the explosion-proof airtight jig comprises: the sealing device comprises an airtight plug 1, a flange hexagon nut 2, a first pressing plate 3, a first rubber pad 4, a spring 5, a sleeve 6, a pull rod 7, a bottom plate 8, a second rubber pad 9, a second pressing plate 10 and an airtight joint 11.

As shown in fig. 5 and 5a, the airtight plug 1 is of an integral structure, the first thread section (the long end external thread in fig. 5) M16 × 1.5 is assembled and connected with the first pressing plate 3 and the first rubber gasket 4 through the flange hexagon nut 2, the end face is milled flat to facilitate clamping, and the flange hexagon nut 2 is rotated to compress the first rubber gasket 4 to seal the inner wall of the pipe nozzle. The second thread segments (short end external threads) M22 × 1.5 are connected to the sleeve 6.

As shown in fig. 7, 7a and 8, the sleeve 6 is connected with the airtight plug 1 by a screw M22 × 1.5, and the end face of the sleeve 6 is processed

The waist-shaped hole is matched with the pull rod 7, and the waist-shaped hole controls the rotation angle of the pull rod 7. The pull rod 7 is arranged atA stroke distance of 5-7 mm is reserved in the vertical direction through a spring 5 which compresses phi 20 multiplied by 20 in the sleeve 6, allowance during product assembly is guaranteed, and the pull rod 7 is fixed at one end of the airtight plug 1.

As shown in fig. 9, the airtight joint 11 is of an integral structure, the long-end external thread M16 is assembled and connected with the second pressure plate 10 and the second rubber gasket 10 through the flange hexagon nut 2, so that the bottom plate 12 and the airtight joint 11 are welded, the flange hexagon nut 2 is rotated to compress the second rubber gasket 10 to seal the inner wall of the nozzle, and the phi 4 air inlet is changed from a common straight-through type to two-side air inlet.

As shown in fig. 10, fig. 10a and fig. 13, the pulling rod 7 is assembled in the closed product cavity, one end of the pulling rod is fixed at one side of the airtight plug 1, the other end of the pulling rod is assembled and linked with one side of the airtight joint 11 (as shown in fig. 11), the T-shaped groove at the tail end of the airtight joint 11 is rotated to be matched with the T-shaped tail end of the pulling rod 7, when the T-shaped tail end of the pulling rod 7 enters the T-shaped groove at the tail end of the airtight joint 11, the pulling rod 7 can generate a crisp snap sound through the elasticity of the spring 5, the sound signal shows that the pulling rod 7 is assembled in the T-shaped groove, at this time, the airtight joint 11 side is rotated half a circle, the fixing.

The pull rod 7 connects the internal expansion type airtight clamps at two sides, so that the great risk that people are injured due to ejection of the clamps with overlarge test pressure in the airtight test is avoided. Referring to fig. 13, the structure utilizes the rotation and fixation of the T-shaped groove, controls the stroke through the spring 5, and is matched with the product standard to carry out the airtight sealing test, so that the structure is convenient to disassemble and reliable to use.

The schematic of the jig after assembly with the product is shown in figures 3 and 4. The invention relates to a device for performing an airtight sealing test by utilizing the rotation and fixation of a T-shaped groove, controlling the stroke through a spring 5 and matching with the product standard.

The assembly steps of the explosion-proof airtight clamp are as follows:

1. connecting the airtight plug 1, the first pressing plate 3 and the first rubber pad 4;

2. connecting the airtight plug assembly with the sleeve 6, the spring 5 and the pull rod 7;

3. connecting the airtight plug side assembly along the vertical direction of the product pipe nozzle, rotating the flange plate hexagon nut 2, and compressing the sealing gasket to seal the inner wall of the pipe nozzle;

4. connecting the airtight joint 11, the second pressing plate 10 and the second rubber pad 9;

5. connecting the airtight joint side assembly along the vertical direction of the product pipe nozzle, and matching a T-shaped groove at the tail end of the rotary airtight joint 11 with a T-shaped tail end at one end of the pull rod 7;

6. the airtight joint 11 rotates for half a circle, and the fixing effect is checked by slightly pulling;

7. rotating the flange plate hexagon nut 2, compressing the sealing gasket to seal the inner wall of the pipe nozzle, and locking the airtight plug and the joint assembly;

8. and (4) unloading the qualified product after the performance test is finished from the clamp, and cleaning and inspecting.

Claims

1. Explosion-proof airtight anchor clamps of condenser, its characterized in that: the sealing device comprises an airtight plug (1), a flange hexagonal nut (2), a first pressing plate (3), a first rubber pad (4), a spring (5), a sleeve (6), a pull rod (7), a bottom plate (8), a second rubber pad (9), a second pressing plate (10) and an airtight joint (11);

the pull rod (7) comprises a rod body, one end of the rod body is connected with the T-shaped structure, and the other end of the rod body is connected with a disc structure with the outer diameter larger than that of the rod body;

one end of the sleeve (6) is provided with a cylindrical hole, the other end of the sleeve is provided with a waist-shaped hole, and the waist-shaped hole is communicated with the cylindrical hole;

a hollow pipeline is arranged in the airtight connector (11) along the axis direction, an air inlet is arranged in the direction vertical to the axis direction, two sections of threads are arranged on the surface of the airtight connector (11) at intervals, and a T-shaped groove is formed in one end of the airtight connector (11);

one end of the pull rod (7) is connected with the airtight plug (1) through a disc structure and a sleeve (6), a spring (5) is arranged inside the sleeve (6), the pull rod (7) and the airtight plug (1) are respectively arranged at two ends of the spring (5), and a first rubber pad (4), a first pressing plate (3) and a flange hexagonal nut (2) are sequentially connected to the airtight plug (1) and the side close to the sleeve (6);

the other end of the pull rod (7) is connected with a T-shaped groove of the airtight joint (11) through a T-shaped structure, and the airtight joint (11) is sequentially connected with the bottom plate (8), the second rubber pad (9) and the second pressing plate (10) on the side close to the pull rod (7).

2. A condenser explosion-proof airtight clamp as defined in claim 1 wherein: the airtight plug (1) comprises a first thread section and a second thread section which are positioned on the surface, and a disc section is arranged between the first thread section and the second thread section.