A pressure vessel flange sealing surface protection device

Abstract

This utility model discloses a pressure vessel flange sealing surface protection device, including a protective ring adapted to the pressure vessel flange sealing surface and an installation assembly for fixing the protective ring to the pressure vessel flange sealing surface. The installation assembly includes at least two clamping blocks that clamp the protective ring onto the flange from the central hole of the protective ring. An expansion member is provided within the central hole of the protective ring to ensure the clamping blocks are tightly pressed against the inner wall of the flange hole. The mating surface between the clamping blocks and the expansion member is set as an inclined surface along the centerline of the protective ring. This utility model protects the sealing surface by providing a protective ring adapted to the pressure vessel flange sealing surface; it compresses and fixes the protective ring by providing clamping blocks; it expands the clamping blocks by providing an expansion member composed of expansion pins and guide plates; and it guides and limits the clamping blocks under the action of the guide plates, ensuring installation stability.

Description

Technical Field

[0001] This utility model belongs to the field of pressure vessel manufacturing technology, and specifically relates to a pressure vessel flange sealing surface protection device. Background Technology

[0002] Flanges for pressure vessels operating in marine climates require corrosion resistance. Conventional flange surfaces are not conducive to the adhesion of anti-corrosion paint, often resulting in paint peeling. To improve paint adhesion, surface roughening treatment is required for areas of the flange other than the sealing surface. However, during conventional sandblasting roughening, traditional adhesive rubber protection is prone to detachment, causing damage to the sealing surface. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a pressure vessel flange sealing surface protection device that is reasonably designed, easy to install and remove, and has a good protective effect, in order to overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A pressure vessel flange sealing surface protection device is characterized in that the device includes a protective ring adapted to the pressure vessel flange sealing surface and an installation assembly for fixing the protective ring to the pressure vessel flange sealing surface. The installation assembly includes at least two clamping blocks that clamp the protective ring onto the flange from the central hole of the protective ring. An expansion member is provided in the central hole of the protective ring to make the clamping blocks fit tightly against the inner wall of the flange hole. The mating surface between the clamping blocks and the expansion member is set as an inclined surface arranged along the center line of the protective ring.

[0005] The technical problem to be solved by this utility model can also be achieved by the following technical solution: the expansion member includes an expansion pin that cooperates with the inclined surface of the clamping block and guide plates provided on both sides of the expansion pin. The guide plates are fixedly connected to the expansion pin, and a guide groove cavity is provided between the two guide plates for guiding the clamping block to clamp the protective ring radially.

[0006] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the expansion nail is provided with a plate nail, the plate nail is provided with a nail head and a conical nail body, and the guide clamp is clamped on both sides of the conical nail body and fixedly connected to the nail head.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the clamping block is provided with a plate, one side of the plate is provided with a slot for clamping on the protective ring and the pressure vessel flange, and the inclined surface is provided on the other side of the plate opposite to the slot.

[0008] Compared with the prior art, this utility model protects the sealing surface by providing a protective ring that is compatible with the sealing surface of the pressure vessel flange; it also protects the sealing surface by providing a clamping block to press and fix the protective ring, and it uses an expansion member composed of expansion pins and guide plates to expand the clamping block. Under the action of the guide plates, the clamping block is guided and limited to ensure installation stability. Attached Figure Description

[0009] Figure 1 This is a structural diagram of the pressure vessel flange sealing surface protection device described in this utility model; Figure 2 This is a diagram showing the fit between the clamping block and the expansion element; Figure 3 for Figure 1 Top view; Figure 4 for Figure 3 A sectional view along line AA.

[0010] In the diagram: 1-protective ring, 2-guide clamp, 3-expansion pin, 4-clamping block, 5-bayonet, 6-inclined surface, 7-pressure vessel flange. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0012] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0013] Reference Figure 1-4 A pressure vessel flange sealing surface protection device includes a protective ring 1 adapted to the sealing surface of a pressure vessel flange 7 and an installation assembly for fixing the protective ring 1 to the sealing surface of the pressure vessel flange 7. The installation assembly includes at least two clamping blocks 4 that clamp the protective ring 1 onto the flange from the central hole of the protective ring 1. An expansion member is provided in the central hole of the protective ring 1 to make the clamping blocks 4 fit tightly against the inner wall of the flange hole. The mating surface between the clamping blocks 4 and the expansion member is set as an inclined surface 6 arranged along the center line of the protective ring.

[0014] The expansion member includes an expansion pin 3 that cooperates with the inclined surface of the clamping block 4 and guide plates 2 provided on both sides of the expansion pin 3. The guide plates 2 are fixedly connected to the expansion pin 3, and a guide groove cavity is provided between the two guide plates 2 for guiding the clamping block 4 to clamp the protective ring 1 radially.

[0015] The expansion bolt 3 is provided with a plate-shaped bolt, which has a bolt head and a conical bolt body. The guide clamp is clamped on both sides of the conical bolt body and is fixedly connected to the bolt head.

[0016] The clamping block 4 has a plate body, one side of which has a slot for locking onto the protective ring 1 and the pressure vessel flange 7, and the inclined surface 6 is located on the other side of the plate body opposite to the slot.

[0017] In use, first attach the protective ring 4 to the sealing surface of the pressure vessel flange 7, then use the latch 5 on the clamping block 4 to clamp it onto the protective ring 4 and the pressure vessel flange 7. Usually, two clamping blocks 4 are sufficient. Then, clamp the integrated expansion member onto the clamping block 4 from the center hole of the protective ring 1. Strike the expansion pin 3. As the expansion pin 3 moves into the pressure vessel flange, the cooperation between the two guide plates 2 and the clamping block 4 prevents the expansion pin 3 from rotating within the center hole of the protective ring 1. Moreover, as the expansion pin 3 moves into the pressure vessel flange 7, the inclined surface 6 applies an expansion force to the clamping block 4, thereby achieving a radial expansion fit between the clamping block 4 and the inner wall of the pressure vessel flange 7 along the center hole of the protective ring 2. This ensures the protective ring 1 fits against the sealing surface of the pressure vessel flange 7, thus protecting the sealing surface of the pressure vessel flange.

[0018] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure vessel flange sealing surface protection device, characterized in that, The device includes a protective ring adapted to the sealing surface of a pressure vessel flange and an installation assembly for fixing the protective ring to the sealing surface of the pressure vessel flange. The installation assembly includes a clamping block that clamps the protective ring onto the flange from the central hole of the protective ring. There are two clamping blocks, which are symmetrically arranged inside the protective ring. An expansion member is provided inside the central hole of the protective ring to make the clamping block fit tightly against the inner wall of the flange hole. The mating surface between the clamping block and the expansion member is set as an inclined surface arranged along the center line of the protective ring.

2. The pressure vessel flange sealing surface protection device according to claim 1, characterized in that, The expansion member includes an expansion pin that mates with the inclined surface of the clamping block and guide plates on both sides of the expansion pin. The guide plates are fixedly connected to the expansion pin, and a guide groove is provided between the two guide plates to guide the clamping block to clamp the protective ring radially.

3. The pressure vessel flange sealing surface protection device according to claim 2, characterized in that, The expansion bolt has a plate-shaped nail, which has a nail head and a conical nail body. The guide clamp is clamped on both sides of the conical nail body and is fixedly connected to the nail head.

4. The pressure vessel flange sealing surface protection device according to claim 1, characterized in that, The clamping block has a plate body, one side of which has a locking slot for locking onto the protective ring and the pressure vessel flange, and the inclined surface is located on the other side of the plate body opposite to the locking slot.

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