Petroleum pipeline flange connecting structure

Abstract

The utility model relates to the technical field of petroleum pipelines, in particular to a petroleum pipeline flange connecting structure which comprises a first pipeline and a second pipeline. The first flange plate and the second flange plate are connected through the connecting bolt, flange connection of the first pipeline and the second pipeline is achieved, the gap between the first flange plate and the second flange plate can be reduced by installing the first sealing gasket in the two embedding grooves, and the second sealing gasket in the installing groove can be used for sealing the first pipeline and the second pipeline. The first flange plate and the second flange plate are sleeved with the first sealing gasket and the third sealing gasket in the sleeving groove, the connecting tightness of the first flange plate and the second flange plate can be improved, the sealing effect of the connecting position is improved, one end of an anti-disengaging plug can penetrate through an inserting hole and be inserted into the anti-disengaging groove through the anti-disengaging groove formed in one end of the first sealing gasket, and the limiting effect on the first sealing gasket is achieved; therefore, the first sealing gasket is not prone to sliding in the connecting process, and the sealing effect of the connecting position is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to petroleum pipeline technical field, concretely is a petroleum pipeline flange connecting structure. BACKGROUND

[0002] Petroleum refers to the liquid and solid hydrocarbon mixture, has natural occurrence. Petroleum is divided into crude oil, natural gas, natural gas liquid and natural tar etc. form, but still "petroleum" as "crude oil" definition is used habitually. In the petroleum industry, need to use special petroleum pipeline to carry out the transportation of petroleum, and petroleum pipeline often needs to lay very long distance, so need to connect petroleum pipeline head to tail to form a complete petroleum transportation line, at this moment, the connection between adjacent pipelines usually needs to use sealing flange plate to connect installation.

[0003] In the prior art, the flange is a pair of disc-shaped parts, which is usually composed of a flange plate, connecting bolts and sealing gaskets, and is widely used in pipeline connection engineering. However, when the petroleum pipeline is connected by the flange, the sealing gasket is prone to sliding during the connection process, which affects the sealing effect of the connection. Therefore, we propose a petroleum pipeline flange connecting structure. UTILITY MODEL CONTENT

[0004] The utility model discloses a petroleum pipeline flange connecting structure, to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a petroleum pipeline flange connecting structure, comprising: a first pipeline and a second pipeline, the first pipeline and the second pipeline are respectively installed with first flange plate and second flange plate at the end close to each other, and the first flange plate and the second flange plate are connected with connecting bolts between the edge close to the outer wall;

[0006] The inner wall of the first flange plate and the second flange plate is provided with an embedding groove, and the first sealing gasket is connected between the two embedding grooves, the end of the first sealing gasket close to the second flange plate is provided with an anti-dropping groove, the inner wall of the anti-dropping groove is connected with an anti-dropping plug, and the anti-dropping plug is installed with a connecting column at one end.

[0007] The surface of the first flange plate close to the connecting bolt is provided with a mounting groove, the inner wall of the mounting groove is connected with a second sealing gasket, and the outer wall of the second flange plate is provided with a sleeve groove, and the inner wall of the sleeve groove is sleeved with a third sealing gasket.

[0008] Preferably, one end of the first flange plate and the second flange plate is fixedly installed on the first pipeline and the second pipeline respectively, the connecting bolts are evenly provided with six, the surface of the first flange plate and the second flange plate close to each connecting bolt is provided with a connecting hole, and one end of the six connecting bolts passes through adjacent two connecting holes in turn.

[0009] Preferably, the first sealing gasket is in the shape of a cross section, and the two ends of the two embedding grooves are communicated with the limiting grooves, and the two ends of the first sealing gasket are inserted into the adjacent limiting grooves.

[0010] Preferably, the anti-disengagement groove and the anti-disengagement plug are in the shape of a cone, one end of the anti-disengagement plug is inserted into the anti-disengagement groove, and the other end of the anti-disengagement plug is fixedly connected with the connecting column.

[0011] Preferably, the anti-disengagement groove is communicated with the insertion hole at one end close to the connecting column, the inner wall of the insertion hole is tightly fitted with the outer wall of the connecting column, and the other end of the connecting column is fixedly installed on the inner wall of the adjacent limiting groove.

[0012] Preferably, one end of the second sealing gasket is installed in the installation groove, the other end of the second sealing gasket is tightly fitted with the surface of the second flange plate, and the surface of the second sealing gasket close to each connecting hole is provided with a through hole.

[0013] Preferably, the third sealing gasket is installed in the sleeve groove, and one end of the third sealing gasket is tightly fitted with the surface of the first flange plate.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The first flange plate and the second flange plate are connected through the connecting bolt, the flange connection of the first pipeline and the second pipeline is realized, the first sealing gasket is installed in the two embedding grooves, the gap between the first flange plate and the second flange plate is reduced, the second sealing gasket in the installation groove and the third sealing gasket in the sleeve groove can improve the connection tightness of the first flange plate and the second flange plate, and the sealing effect of the connection is improved, the anti-disengagement plug is inserted into the anti-disengagement groove through the insertion hole, the limiting effect of the first sealing gasket is realized, the first sealing gasket is not easy to slide in the connection process, and the sealing effect of the connection is not affected. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure perspective view of the utility model;

[0017] Figure 2 It is a whole structure perspective view of the utility model;

[0018] Figure 3 It is a whole structure perspective view of the utility model; Figure 2 It is an enlarged view of the structure at A in the utility model;

[0019] Figure 4 It is a whole structure perspective view of the utility model;Figure 3 Structure enlarged schematic view at B in the middle;

[0020] Figure 5 The utility model is partial structure explosion schematic view.

[0021] In the figure: 1, first pipeline;2, first flange plate;3, second flange plate;4, connecting hole;5, connecting bolt;6, first sealing washer;7, embedded groove;8, limiting groove;9, anti -drop plug;10, anti -drop groove;11, plug -in hole;12, connecting column;13, second sealing washer;14, installation groove;15, through -hole;16, third sealing washer;17, sleeve groove;18, second pipeline. DETAILED DESCRIPTION

[0022] In order to make the utility model purposes, technical scheme carry out clearly, completely describe, and the advantage is more clear and apparent, following combining the drawing to the utility model embodiment further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, instead of all the embodiment, just to explain the embodiment of the utility model, and not for the limitation of the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without doing the premise of creative labor, belong to the scope of the protection of the utility model.

[0023] Please refer to Figures 1 to 5 The utility model provides a kind of technical scheme: a petroleum pipeline flange connecting structure, comprising: first pipeline 1 and second pipeline 18, first pipeline 1 and second pipeline 18 are mutually close one end and is respectively installed with first flange plate 2 and second flange plate 3, first flange plate 2 and second flange plate 3 are connected with connecting bolt 5 between the edge of the edge of outer wall;First flange plate 2 and second flange plate 3 one end is respectively fixedly installed on first pipeline 1 and second pipeline 18, connecting bolt 5 is evenly provided with six, first flange plate 2 and second flange plate 3 are close to the surface of each connecting bolt 5 and are all set with connecting hole 4, six connecting bolts 5 one end sequentially passes through adjacent two connecting holes 4, so that first flange plate 2 and second flange plate 3 are fixedly connected by connecting bolt 5.

[0024] The inner wall of the first flange plate 2 and the second flange plate 3 is provided with an embedded groove 7, and the first sealing gasket 6 is connected between the two embedded grooves 7. An anti-dropping groove 10 is formed at one end of the first sealing gasket 6 close to the second flange plate 3, and an anti-dropping plug 9 is connected to the inner wall of the anti-dropping groove 10. One end of the anti-dropping plug 9 is provided with a connecting column 12. The cross section of the first sealing gasket 6 is in the shape of a cross. The two ends of the first sealing gasket 6 far away from each other are connected to the limiting grooves 8. The two ends of the first sealing gasket 6 far away from each other are inserted into the adjacent limiting grooves 8, so as to install the first sealing gasket 6 in the two embedded grooves 7 and the two limiting grooves 8, and then the first sealing gasket 6 is limited. The anti-dropping groove 10 and the anti-dropping plug 9 are both in the shape of a cone. One end of the anti-dropping plug 9 is inserted into the anti-dropping groove 10, and the other end of the anti-dropping plug 9 is fixedly connected with the connecting column 12. The end of the anti-dropping plug 9 with a larger diameter is connected with the connecting column 12, and the other end of the anti-dropping plug 9 is in the shape of a curved surface, so as to facilitate the insertion of the anti-dropping plug 9 into the anti-dropping groove 10. One end of the anti-dropping groove 10 close to the connecting column 12 is connected with a plug hole 11, and the inner wall of the plug hole 11 is tightly attached to the outer wall of the connecting column 12. The other end of the connecting column 12 far away from the anti-dropping plug 9 is fixedly installed on the inner wall of the adjacent limiting groove 8, so as to press the anti-dropping plug 9 through the plug hole 11 by the elasticity of the first sealing gasket 6.

[0025] The surface of the first flange plate 2 close to the connecting bolt 5 is provided with an installation groove 14, and the inner wall of the installation groove 14 is connected with a second sealing gasket 13. The outer wall of the second flange plate 3 is provided with a sleeving groove 17, and the inner wall of the sleeving groove 17 is sleeved with a third sealing gasket 16. One end of the second sealing gasket 13 is installed in the installation groove 14, and the other end of the second sealing gasket 13 is tightly attached to the surface of the second flange plate 3. The surface of the second sealing gasket 13 close to each connecting hole 4 is provided with a through hole 15. The third sealing gasket 16 is installed in the sleeving groove 17, and one end of the third sealing gasket 16 is tightly attached to the surface of the first flange plate 2.

[0026] When the device works, the first flange plate 2 and the second flange plate 3 are connected by the connecting bolt 5, so as to realize the flange connection of the first pipeline 1 and the second pipeline 18. By installing the first sealing gasket 6 in the two embedded grooves 7, the gap between the first flange plate 2 and the second flange plate 3 can be reduced. By installing the second sealing gasket 13 in the installation groove 14 and the third sealing gasket 16 in the sleeving groove 17, the connection tightness of the first flange plate 2 and the second flange plate 3 can be improved, so as to improve the sealing effect of the connection. By forming the anti-dropping groove 10 at one end of the first sealing gasket 6, one end of the anti-dropping plug 9 can be inserted into the anti-dropping groove 10 through the plug hole 11, so as to limit the first sealing gasket 6, and the first sealing gasket 6 is not easy to slide during the connection, so as to avoid affecting the sealing effect of the connection.

[0027] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A petroleum pipeline flange connection structure comprising: The first pipe (1) and the second pipe (18) are characterized in that: a first flange (2) and a second flange (3) are respectively installed at the ends of the first pipe (1) and the second pipe (18) that are close to each other, and a connecting bolt (5) is connected between the edges of the first flange (2) and the second flange (3) near the outer wall; The inner walls of the first flange (2) and the second flange (3) are provided with embedded grooves (7), and a first sealing gasket (6) is connected between the two embedded grooves (7). An anti-detachment groove (10) is provided at one end of the first sealing gasket (6) near the second flange (3). An anti-detachment plug (9) is connected to the inner wall of the anti-detachment groove (10), and a connecting post (12) is installed at one end of the anti-detachment plug (9). The first flange (2) has an installation groove (14) on its surface near the connecting bolt (5). The inner wall of the installation groove (14) is connected to a second sealing gasket (13). The outer wall of the second flange (3) has a sleeve groove (17). The inner wall of the sleeve groove (17) is fitted with a third sealing gasket (16).

2. A petroleum piping flange coupling structure according to claim 1, wherein: One end of the first flange (2) and the second flange (3) are fixedly installed on the first pipe (1) and the second pipe (18) respectively. There are six connecting bolts (5) evenly arranged. The first flange (2) and the second flange (3) have connecting holes (4) on the surface near each connecting bolt (5). One end of the six connecting bolts (5) passes through two adjacent connecting holes (4) in sequence.

3. A petroleum piping flange coupling structure according to claim 1, wherein: The first sealing gasket (6) has a cross-shaped cross section. The two embedded grooves (7) are connected to the limiting groove (8) at their far ends. The two far ends of the first sealing gasket (6) are respectively inserted into the adjacent limiting groove (8).

4. A petroleum piping flange coupling structure according to claim 1, wherein: Both the anti-detachment groove (10) and the anti-detachment plug (9) are conical in shape. One end of the anti-detachment plug (9) is inserted into the anti-detachment groove (10), and the other end of the anti-detachment plug (9) is fixedly connected to the connecting post (12).

5. The petroleum piping flange joint structure according to claim 1, wherein: The anti-detachment groove (10) has a plug hole (11) connected to one end of the connecting post (12). The inner wall of the plug hole (11) and the outer wall of the connecting post (12) are tightly fitted. The end of the connecting post (12) away from the anti-detachment plug (9) is fixedly installed on the inner wall of the adjacent limiting groove (8).

6. A petroleum piping flange joint structure according to claim 1, wherein: One end of the second sealing gasket (13) is installed inside the mounting groove (14), and the other end of the second sealing gasket (13) is in close contact with the surface of the second flange (3). The surface of the second sealing gasket (13) near each connection hole (4) is provided with a through hole (15).

7. A petroleum piping flange coupling structure according to claim 1, wherein: The third sealing gasket (16) is installed inside the sleeve groove (17), and one end of the third sealing gasket (16) is in close contact with the surface of the first flange (2).

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