CN206861104U - Gas pipeline gasket - Google Patents

Abstract

The utility model relates to a natural gas pipeline sealing gasket, which comprises a pipeline, a flange plate is arranged between the pipelines, a first through hole is symmetrically arranged on the flange plate, a fixing screw is arranged in the first through hole, a nut is arranged at one end of the fixing screw in a matching way, a gasket body is arranged between the flange plates, a limiting ring is arranged at the inner side of the gasket body, bosses are symmetrically arranged at two sides of the gasket body, the bosses are fixedly connected with the limiting ring and the gasket body, a safety ring is arranged at the outer side of the bosses, a second through hole is arranged at the outer side of the safety ring, the second through hole corresponds to the first through hole and is sleeved on the fixing screw, an extending part is arranged at the outer side of the through hole, a scale mark is arranged at one side of the extending part, the limiting ring can be directly placed at the pipeline connecting port when being installed, the gasket body, the gasket can be fixed so as not to be displaced.

Description

Gas pipeline gasket

technical field

The utility model relates to a natural gas pipeline sealing gasket, which belongs to the technical field of pipeline sealing parts.

Background technique

Sealing gasket is a kind of sealing spare parts used in machinery, equipment and pipelines as long as there is fluid. It uses internal and external materials to play a sealing role. Sealing gaskets are made of metal or non-metallic plate materials through cutting, stamping or cutting processes, and are used for the sealing connection between pipes, the sealing connection between parts of machinery and equipment, and can be made according to the material Divided into metal gaskets and non-metal gaskets, metal gaskets include copper gaskets, stainless steel gaskets, iron gaskets, aluminum gaskets, etc. Non-metal gaskets are used in the butt joints of gas pipelines, but the general sealing The gasket forms a closed space when the pipe is squeezed, but during installation or maintenance, personnel are often required to fit and calibrate the gasket, and the general gasket is mostly a flat gasket. The sealing effect is average. During normal maintenance, because the gasket is completely between the flanges, the state of the gasket cannot be seen, which greatly increases the work difficulty of the maintenance personnel and also leaves hidden dangers.

Utility model content

The technical problem to be solved by the utility model overcomes the existing defects, and provides a natural gas pipeline sealing gasket. Since the fixing screws and nuts are provided, the flange plate can exert pressure on the gasket body to increase the sealing performance of the gasket body. The limit ring can be placed directly at the pipe connection port during installation, without aligning the gasket with the pipe port again, which is convenient for aligning the two pipe ports during installation, and can also fix the gasket. To prevent displacement, due to the boss, it can be in contact with the flange to increase the pressure between the pad and the flange, thereby increasing the sealing between the flange and the pad. Due to the safety ring , when the boss is displaced or damaged, the safety ring can prevent the gas from leaking out, and it can also increase the pressure between the pad body and the flange to prevent the pad body from being displaced or deformed. Since there are extensions and scale lines, it can be It is convenient for maintenance personnel to observe whether the pad body is displaced, and can effectively solve the problems in the background technology.

In order to solve the above technical problems, the utility model provides the following technical solutions:

A gasket for a natural gas pipeline, comprising pipelines, flanges are arranged between the pipelines, through holes 1 are symmetrically arranged on the flanges, fixing screws are arranged in the through holes 1, and the fixing screws One end is equipped with a nut, a pad is provided between the flanges, a limit ring is provided inside the pad, bosses are symmetrically provided on both sides of the pad, and the boss and the stop ring, The pads are all fixedly connected, a safety ring is provided on the outside of the boss, and a second through hole is arranged on the outside of the safety ring, the second through hole corresponds to the first through hole, and they are all set on the fixing screws. An extension part is provided on the outer side of the second hole, and a scale line is provided on one side of the extension part.

Further, the pad body, the limiting ring, the boss, and the safety ring are all in the shape of a ring, and the pad body is made of rubber.

Further, the cross-section of the safety ring is semicircular, and the radius is smaller than the height of the boss.

Further, the outer diameter of the limiting ring is equal to the inner diameter of the pipe.

Further, the diameter of the flange is equal to the inner diameter of the extension part, and the edge of the flange is located on the zero scale of the scale line.

Beneficial effects of the utility model: due to the fixed screws and nuts, the flange plate can exert pressure on the pad body to increase the sealing performance of the pad body, and because the limit ring is provided, the limit ring can be directly placed on the pad during installation. At the pipe connection port, there is no need to align the gasket body with the pipe port again. It is convenient to align the two pipe ports during the installation process, and it can also fix the gasket so that it does not shift. The contact of the flange plate increases the pressure between the pad and the flange, thereby increasing the sealing between the flange and the pad. Due to the safety ring, the safety ring can stop the gas when the boss is displaced or damaged. Leakage can also increase the pressure between the pad body and the flange to prevent the pad body from being displaced or deformed. Since there are extensions and scale lines, it is convenient for maintenance personnel to observe whether the pad body is displaced.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute a limitation to the utility model.

Fig. 1 is a sectional view of a natural gas pipeline gasket of the present invention.

Fig. 2 is a structure diagram of a natural gas pipeline sealing gasket according to the utility model.

Labels in the figure: 1. Pipe; 2. Flange; 3. Through hole 1; 4. Fixing screw; 5. Nut; 6. Pad; 7. Limiting ring; 8. Boss; 9. Security ring; 10. Second through hole; 11. Extension; 12. Scale line.

detailed description

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

As shown in Figure 1-2, a natural gas pipeline gasket includes pipelines 1, flanges 2 are arranged between the pipelines 1, and through holes 3 are symmetrically arranged on the flanges 2. A fixing screw 4 is provided in the hole one 3, and a nut 5 is provided at one end of the fixing screw 4, so that the flange 2 can exert pressure on the pad body 6 and increase the tightness of the pad body 6. The flange 2 A cushion body 6 is arranged between them, and a limit ring 7 is provided on the inner side of the cushion body 6. During installation, the limit ring 7 can be directly placed at the connection port of the pipeline 1, and there is no need to connect the cushion body 6 to the pipeline 1 port again. Alignment, it is convenient to align the two pipe ports during the installation process, and it can also fix the gasket so that it will not be displaced. The two sides of the gasket body 6 are symmetrically provided with bosses 8, which can be contacted with the flange plate 2 to increase the gasket The pressure between the body 6 and the flange 2, thereby increasing the sealing between the flange 2 and the pad body 6, and the boss 8 is fixedly connected with the stop ring 7 and the pad body 6, and the The outside of the boss 8 is provided with a safety ring 9, which can prevent the leakage of gas when the boss 8 is displaced or damaged, and can also increase the pressure between the pad body 6 and the flange 2 to prevent the pad body 6 from leaking. Displacement or deformation, the outer side of the safety ring 9 is provided with a second through hole 10, the second through hole 10 corresponds to the first through hole 3, and both are sleeved on the fixing screw 4, and an extension part is provided on the outer side of the second through hole 10 11. A scale line 12 is provided on one side of the extension part 11, which is convenient for maintenance personnel to observe whether the pad body is displaced.

More specifically, the pad body 6, the limit ring 7, the boss 8, and the safety ring 9 are all in the shape of a ring, the pad body 6 is made of rubber, and the section of the safety ring 9 is semicircular, and The radius is smaller than the height of the boss 8, the outer diameter of the limiting ring 7 is equal to the inner diameter of the pipe 1, the diameter of the flange 2 is equal to the inner diameter of the extension part 11, and the edge of the flange 2 is located at zero of the scale line 12 On the scale, it is convenient for maintenance personnel to observe the state of the gasket.

The working principle of the utility model: when the pipeline is docked, the cushion body is installed on a pipeline port, the limit ring is aligned with the pipeline port, and then the other pipeline port is aligned with the limit ring on the other side of the cushion body. Align through hole 1 with through hole 2, align the outer edge of the flange with the zero scale of the scale line on the extension, and then fix and tighten the flange with fixing screws and nuts.

The above is a preferred embodiment of the utility model, and those skilled in the art of the utility model can also change and modify the above-mentioned embodiment. Therefore, the utility model is not limited to the above-mentioned specific embodiment. Anyone skilled in the art Any obvious improvement, replacement or modification made on the basis of the present utility model belongs to the protection scope of the present utility model.

Claims (5)

1. a kind of natural gas line sealing gasket, including pipeline (1), it is characterised in that be provided with ring flange between the pipeline (1) (2) through hole one (3), is arranged with the ring flange (2), fixed screw (4) is provided with the through hole one (3), and it is described solid Screw (4) one end is determined with nut (5) is arranged with, and pad (6) is provided between the ring flange (2), is provided with the inside of the pad (6) Spacing ring (7), pad (6) both sides are arranged with boss (8), and the boss (8) is with spacing ring (7), pad (6) It is fixedly connected, relieving ring (9) is provided with the outside of the boss (8), through hole two (10) is provided with the outside of the relieving ring (9), it is described logical Hole two (10) is corresponding with through hole one (3), and is sleeved on fixed screw (4), and extension is provided with the outside of the through hole two (10) (11), extension (11) side is provided with graduation mark (12).

A kind of 2. natural gas line sealing gasket according to claim 1, it is characterised in that：The pad (6), spacing ring (7), Boss (8), relieving ring (9) are toroidal, and the pad (6) is quality of rubber materials.

A kind of 3. natural gas line sealing gasket according to claim 1, it is characterised in that：Relieving ring (9) section is half Circle, and radius is less than boss (8) height.

A kind of 4. natural gas line sealing gasket according to claim 1, it is characterised in that：The external diameter of the spacing ring (7) with Pipeline (1) internal diameter is equal.

A kind of 5. natural gas line sealing gasket according to claim 1, it is characterised in that：Diameter of the ring flange (2) etc. Internal diameter in extension (11), and the edge of ring flange (2) is located on the zero graduation of graduation mark (12).