Flange metal sealing gasket mounting tool

Abstract

The utility model relates to the technical field of flange installation auxiliary equipment, in particular to a flange metal sealing gasket installation tool which comprises a base plate, the base plate comprises two symmetrically-distributed semicircular splice plates, the middle of each splice plate is provided with a receding groove, and the two receding holes are spliced to form a positioning hole used for fixing a lens gasket. The inner side wall of the positioning hole is attached to the outer side wall of the lens pad, insertion of the lens is limited, it is guaranteed that the sealing face of the lens can be attached to the conical face of the flange after installation is completed, compared with an existing mode that the lens pad is directly installed, insertion limiting of the lens pad can be enhanced through the positioning hole, and it is guaranteed that the lens pad is installed in the middle; and the sealing performance of flange connection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flange installation auxiliary equipment, in particular to a tool used for installing a flange metal sealing gasket. Background Art

[0002] Metal seals, also known as lens gaskets, are widely used in high-pressure pipeline flange connections. The sealing surface of the lens gasket is a spherical surface, which contacts the conical sealing surface of the flange. The initial state is a ring line. Under the action of the preload, the lens gasket produces plastic deformation at the contact point, and the ring line becomes a ring belt, which has better sealing performance. However, if it cannot be installed in the center, the conical surface of the flange and the spherical surface of the lens gasket will not form a coherent ring line. After sealing, the plastic deformation of the sealing surface is uneven, resulting in air leakage. Therefore, it is necessary to design an auxiliary tooling that is convenient for the installation of the lens gasket to improve the sealing and convenience of the flange connection. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provide a flange metal sealing gasket installation tool which can limit the position of a lens gasket during installation.

[0004] The utility model is realized through the following technical scheme: a flange metal sealing gasket installation tool, comprising a base plate, the base plate comprising two symmetrically distributed splicing plates, the middle of the splicing plates is provided with a avoidance hole, and the two avoidance holes are spliced ​​to form a positioning hole for fixing the lens gasket.

[0005] Furthermore, limit plates are provided on the inner side walls of the upper end and the lower end of the splicing plate, and a clamping boss for clamping on the outer side wall of the flange is formed between the limit plate and the splicing plate.

[0006] Furthermore, the limiting plate is arc-shaped and has a length that is 1 / 3 of the splicing plate.

[0007] Furthermore, a pull-off block is provided on the outer side wall of the splicing plate, and a through hole is provided in the middle of the pull-off block.

[0008] Furthermore, the splicing plate is provided with avoidance grooves corresponding to the positions of the threaded holes of the flange.

[0009] Furthermore, the number of the avoidance grooves is three, and one of the avoidance grooves is arranged on the radius of the splicing plate and is coaxial with the positioning hole.

[0010] The beneficial effects of the utility model are that the flange metal sealing gasket installation tooling includes a base plate, the base plate includes two symmetrically distributed semicircular splicing plates, a avoidance groove is opened in the middle of the splicing plate, and the two avoidance grooves are spliced ​​to form a positioning hole for fixing the lens pad, the inner wall of the positioning hole is fitted with the outer wall of the lens pad, and the insertion of the lens is limited to ensure that the sealing surface of the lens can fit with the conical surface of the flange after the installation is completed. Compared with the existing direct installation of the lens pad, the positioning hole can be used to enhance the insertion limit of the lens pad to ensure its centered installation and improve the sealing of the flange connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the connection structure between the splicing plate and the flange in Example 1;

[0012] Figure 2 is a cross-sectional view of Example 1;

[0013] Figure 3 Schematic diagram of the splicing structure of the splicing plate in Example 1;

[0014] Figure 4 This is a front view of the splicing plate in Example 1;

[0015] Figure 5 Schematic diagram of the splicing structure of the splicing plate in Example 2.

[0016] Among them: 1-splicing plate; 2-avoidance hole; 3-positioning hole; 4-limiting plate; 5-clamping boss; 6-pull-off block; 7-through hole; 8-avoidance groove. DETAILED DESCRIPTION

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example 1

[0020] like Figure 1-4 As shown, a flange metal sealing gasket installation tool includes a base plate, and the base plate includes two symmetrically distributed semicircular splicing plates 1. A avoidance hole 2 is opened in the middle of the splicing plate 1. The two avoidance holes 2 are spliced ​​to form a positioning hole 3 for fixing the lens pad. The inner wall of the positioning hole 3 is in contact with the outer wall of the lens pad to limit the insertion of the lens, ensuring that the sealing surface of the lens can be in contact with the conical surface of the flange after the installation is completed. Compared with the existing direct installation of the lens pad, the positioning hole 3 can be used to enhance the insertion limit of the lens pad to ensure its centered installation and improve the sealing of the flange connection.

[0021] A limit plate 4 is provided on the inner side walls of the upper and lower ends of the splicing plate 1, and a clamping boss 5 for clamping on the outer side wall of the flange is formed between the limit plate 4 and the splicing plate 1. The clamping boss 5 can fix the splicing plate 1 when in use, and the splicing plate 1 is hung on the surface of the flange, so that the two splicing plates 1 do not need to be additionally fixed after covering the surface of the flange, which facilitates the use of the splicing plate 1.

[0022] The limiting plate 4 is arc-shaped and its length is 1 / 3 of the splicing plate 1. The arc-shaped splicing plate 1 can fit with the outer wall of the flange. While hanging the splicing plate 1, it can also guide and limit the insertion of the splicing plate 1, ensuring that the inner walls of the two splicing plates 1 are fit and connected at the center position of the flange.

[0023] A pull-off block 6 is provided on the outer side wall of the splicing plate 1 , and a through hole 7 is provided in the middle of the pull-off block 6 . The through hole 7 can be used to connect an external tension device to separate the two splicing plates 1 .

[0024] The splicing plate 1 is provided with avoidance grooves 8 corresponding to the positions of the threaded holes of the flange. After the two splicing plates 1 are spliced, the two corresponding avoidance grooves 8 are connected to form a through groove. There are three avoidance grooves 8. After the splicing is completed, three through grooves are formed. Each through groove can avoid the two threaded holes. One of the avoidance grooves 8 is located on the radius of the splicing plate 1 and is coaxially arranged with the positioning hole 3. The positioning hole 3 is located in the middle position of the through groove.

[0025] When in use, the two splicing plates 1 are covered on the flange below, and the two splicing plates 1 are spliced ​​after the clamping boss 5 is fitted with the outer wall of the flange. At this time, the entire tooling is coaxially distributed with the flange, and the positioning hole 3 is located on the outside of the conical surface. After the lens pad is inserted into the conical surface of the flange, the outer wall of the lens pad is fitted with the inner wall of the positioning hole 3. At this time, the other flange is buckled on the other side wall of the tooling, and the two flanges are fixed with bolts, which compresses the lens pad to produce plastic deformation at the contact point, thereby improving the sealing of the connection between the two flanges.

[0026] Example 2

[0027] The same as Example 1 is not repeated here, except that Figure 5 As shown: the shape of the splicing plate 1 is rectangular, and a limit plate 4 is provided at the outer edge of the two side walls of the splicing plate 1. After the splicing is completed, the two limit plates 4 are in a circular shape and form a chamber for placing the flange between the side walls of the splicing plate 1. In this way, when installing the second flange, it can also provide guidance for the alignment of the flange, making the installation of the two flanges more accurate and convenient.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flange metal gasket installation tool, characterized in that: The invention comprises a base plate, wherein the base plate comprises two symmetrically distributed splicing plates, a position avoidance hole is arranged in the middle of the splicing plates, and the two position avoidance holes are spliced ​​to form a positioning hole for fixing the lens pad.

2. A flange metal gasket installation tool according to claim 1, characterized in that: Limiting plates are arranged on the inner side walls of the upper end and the lower end of the splicing plate, and a clamping boss for clamping on the outer side wall of the flange is formed between the limiting plate and the splicing plate.

3. A flange metal gasket installation tool according to claim 2, characterized in that: The limiting plate is arc-shaped and has a length of 1 / 3 of the splicing plate.

4. The flange metal gasket installation tool according to claim 1, characterized in that: A pull-off block is arranged on the outer side wall of the splicing plate, and a through hole is arranged in the middle of the pull-off block.

5. The flange metal gasket installation tool according to claim 1 is characterized in that: The splicing plate is provided with avoidance grooves corresponding to the positions of the threaded holes of the flange.

6. A flange metal gasket installation tool according to claim 5, characterized in that: The number of the avoidance grooves is three, and one of the avoidance grooves is arranged on the radius of the splicing plate and is coaxial with the positioning hole.

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