Anti-corrosion low-temperature valve casting

Abstract

The utility model relates to the technical field of low-temperature valve castings, in particular to an anti-corrosion low-temperature valve casting which comprises a valve and first flanges, the front side and the rear side of the outer wall of the valve are fixedly connected with the inner walls of the two first flanges respectively, the outer wall of the valve is connected with a protection structure, and a round opening of the outer wall of the protection structure is connected with a screw rod. And the top of the outer wall of the valve is fixedly connected with a second flange. According to the protection structure, the outer wall of the valve is covered with the shell, at the moment, a protection pad on the inner wall of the shell is attached to the outer wall of the valve, meanwhile, straight plates on the left side and the right side are attached, then a handle is matched to drive a screw to penetrate through the straight plates from right to left in a threaded mode, fixing of the straight plates and a support is completed, and the protection pad is made of polyurethane foam materials and is light and capable of keeping warm; the weight of the valve is prevented from being increased too much, the maintenance cost of the anti-corrosion low-temperature valve casting is reduced, and the service life of the anti-corrosion low-temperature valve casting is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of anti-corrosion cryogenic valve casting technology, specifically an anti-corrosion cryogenic valve casting. Background Technology

[0002] The main functions of cryogenic valve castings include improving the valve's low-temperature resistance, corrosion resistance, and sealing performance.

[0003] For example, a type of corrosion-resistant cryogenic valve casting with announcement number "CN222122357U" achieves the advantage of good corrosion resistance, solving some defects of previous valve castings in use. These defects include the lack of good corrosion resistance, which easily leads to damage during use, and the absence of wear resistance, low-temperature resistance, and waterproofing, reducing the service life of the valve casting and failing to meet current market demands. However, due to the special nature of the materials and processing, special attention needs to be paid to insulation and antifreeze measures during use. The corrosion-resistant cryogenic valve casting itself cannot provide this protection, thus increasing the maintenance cost and shortening its service life. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of increasing the maintenance components of corrosion-resistant cryogenic valve castings and shortening their service life, and to propose a corrosion-resistant cryogenic valve casting.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a corrosion-resistant cryogenic valve casting, including a valve and a first flange. The outer wall of the valve is fixedly connected to the inner walls of two first flanges on its front and rear sides respectively. A protective structure is connected to the outer wall of the valve. A screw is connected to the outer circular opening of the protective structure. A second flange is fixedly connected to the top of the outer wall of the valve.

[0007] Preferably, the protective structure includes an outer shell and a protective pad. The inner wall of the outer shell is fitted to the outer wall of the valve, and the interior of the outer shell is fixedly connected to the outer wall of the protective pad. Supports are fixedly connected to the front and rear sides of the outer wall of the outer shell, and straight plates are fixedly connected to the upper and lower sides of the support.

[0008] Preferably, an arc plate is fixedly connected to the top of the outer shell, and the inner wall of the arc plate is fixedly connected to the upper part of the outer wall of the pad.

[0009] Preferably, the inner sides of the plurality of straight plates are bonded together.

[0010] Preferably, the outer circular opening of the straight plate is threadedly connected to the outer wall of the screw.

[0011] Preferably, a handle is fixed to the right end of the screw.

[0012] The present invention proposes a corrosion-resistant cryogenic valve casting with the following advantages: the protective structure allows the outer shell to cover the outer wall of the valve, at which point the gasket on the inner wall of the outer shell fits snugly against the outer wall of the valve, and the straight plates on the left and right sides fit snugly against each other. Then, with the help of the handle, the screw thread passes through the straight plate from right to left, completing the fixation of the straight plate and the bracket. The gasket, made of polyurethane foam, is both lightweight and warm, preventing excessive increase in valve weight, reducing the maintenance cost of the corrosion-resistant cryogenic valve casting, and ensuring the service life of the corrosion-resistant cryogenic valve casting. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A schematic diagram showing the connection relationship between the valve and the ring.

[0015] Figure 3 for Figure 1 A schematic diagram showing the connection relationship between the outer shell, the gasket, and the arc plate;

[0016] Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the middle bracket, the straight plate, and the screw.

[0017] Figure 5 for Figure 4 A schematic diagram of the structure of A in the middle.

[0018] In the diagram: 1. Valve, 2. Protective structure, 201. Shell, 202. Gasket, 203. Arc plate, 204. Bracket, 205. Straight plate, 3. Ring, 4. First flange, 5. Second flange, 6. Screw, 7. Handle. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] Example 1: Please refer to Figure 1-5 In this embodiment, a corrosion-resistant cryogenic valve casting includes a valve 1 and a first flange 4. The outer walls of the valve 1 are fixedly connected to the inner walls of the two first flanges 4 on the front and rear sides respectively. A protective structure 2 is connected to the outer wall of the valve 1. A screw 6 is connected to the outer round opening of the protective structure 2. A second flange 5 is fixedly connected to the top of the outer wall of the valve 1. The valve 1, the first flange 4 and the second flange 5 are all made of cryogenic carbon steel.

[0021] The protective structure 2 includes an outer shell 201 and a protective pad 202. The inner wall of the outer shell 201 is fitted to the outer wall of the valve 1. The outer shell 1 is made of plastic. The interior of the outer shell 1 is fixed to the outer wall of the protective pad 202. The protective pad 202 is made of polyurethane foam. The front and rear sides of the outer wall of the outer shell 201 are respectively fixed to the brackets 204. The upper and lower sides of the brackets 204 are respectively fixed to the straight plates 205. The top of the outer shell 201 is fixed to the arc plate 203. The arc plate 203 is made of plastic. The inner wall of the arc plate 203 is fixed to the upper part of the outer wall of the protective pad 202.

[0022] The outer shell 201 is placed over the outer wall of the valve 1 through the protective structure 2. At this time, the gasket 202 on the inner wall of the outer shell 201 is in contact with the outer wall of the valve 1, and the straight plates 205 on the left and right sides are in contact. Then, the handle 7 and the screw 6 are threaded through the straight plate 205 from right to left to complete the fixation of the straight plate 205 and the bracket 204. The gasket 202 is made of polyurethane foam, which is both light and warm, avoiding excessive weight increase of the valve 1, reducing the maintenance cost of the corrosion-resistant low temperature valve casting, and ensuring the service life of the corrosion-resistant low temperature valve casting.

[0023] The inner sides of multiple straight plates 205 are attached together, and the outer wall of the straight plate 205 is threadedly connected to the outer wall of the screw 6. The screw 6 is subjected to force and rotates left and right through the outer wall of the straight plate 205. A handle 7 is fixedly connected to the right end of the screw 6, which facilitates the rotation of the screw 6.

[0024] Working principle:

[0025] Corrosion-resistant cryogenic valve casting protective installation:

[0026] The outer casing 201 is placed over the outer wall of the valve 1. At this time, the pad 202 on the inner wall of the outer casing 201 is in contact with the outer wall of the valve 1, and the straight plates 205 on the left and right sides are in contact. Then, the handle 7, along with the screw 6, is threaded through the straight plate 205 from right to left to complete the fixation of the straight plate 205 and the bracket 204. The pad 202, made of its own polyurethane foam material, is both light and warm, preventing the weight of the valve 1 from increasing too much.

[0027] Application of corrosion-resistant cryogenic valve castings:

[0028] The valve plate is inserted through the front of valve 1, and then the valve stem is inserted from top to bottom and connected to the valve plate. Then, the second flange 5 is fixed to the connection port on the valve stem with bolts. Then, a gasket is inserted into the inner wall of the first flange 4, and then the first flange 4 is fixed to the connection port of the pipeline with bolts. Valve 1, first flange 4 and second flange 5 are made of low temperature steel and have excellent corrosion resistance to form a corrosion-resistant low temperature valve casting.

[0029] Example 2: Please refer to Figure 1-5In this embodiment, a corrosion-resistant cryogenic valve casting also includes two rings 3, the inner sides of which are fixedly connected to the front and rear sides of the valve 1, respectively.

[0030] Working principle:

[0031] The outer wall of the ring 3 and the inner wall of the first flange 4 will form a circular interlayer space on one side. This space can be used to place a sealing gasket to ensure the seal after the valve 1 is connected to the pipeline.

[0032] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An anticorrosion cryogenic valve casting, comprising a valve (1) and a first flange (4), the outer wall of the valve (1) is fixed with the inner wall of the two first flanges (4) respectively, characterized in that: The outer wall of the valve (1) is connected with a protection structure (2), the outer wall round port of the protection structure (2) is connected with a screw rod (6), and the outer wall top of the valve (1) is fixedly connected with a second flange (5).

2. The corrosion-resistant cryogenic valve casting of claim 1, wherein: The protection structure (2) comprises an outer shell (201) and a protection pad (202), the inner wall of the outer shell (201) is attached to the outer wall of the valve (1), the inside of the outer shell (201) is fixedly connected with the outer wall of the protection pad (202), the outer wall of the outer shell (201) is fixedly connected with a support (204) on the front and back sides, and the upper and lower sides of the support (204) are fixedly connected with a straight plate (205).

3. The corrosion-resistant cryogenic valve casting of claim 2, wherein: The top of the outer shell (201) is fixedly connected with an arc plate (203), and the inner wall of the arc plate (203) is fixedly connected with the upper outer wall of the protection pad (202).

4. The corrosion resistant cryogenic valve casting of claim 2, wherein: The inner sides of multiple straight plates (205) are attached to each other.

5. The corrosion resistant cryogenic valve casting of claim 2, wherein: The outer wall round port of the straight plate (205) is screw-connected with the outer wall of the screw rod (6).

6. The corrosion-resistant cryogenic valve casting of claim 5, wherein: The right end of the screw rod (6) is fixedly connected with a handle (7).

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