Leak-proof high-pressure gas pipeline flange

Abstract

The invention relates to an anti-leakage high-pressure gas pipeline flange which comprises a first pipeline and a second pipeline, the opposite ends of the first pipeline and the second pipeline are fixedly connected with flanges, and the flanges are fixedly connected through a plurality of bolts; the left end of an inner cavity of the first pipeline is fixedly connected with an inserting convex ring, the right side of an inner cavity of the second pipeline is fixedly connected with an inserting shell, the inserting convex ring is movably inserted into an inserting sealing cavity in the inserting shell in a sealed mode, and stabilizing rods are fixedly connected to the inner side wall of the inserting shell in an annular array mode. The opposite ends of the stabilizing rods are fixedly connected with elastic pieces. According to the overall structure provided by the embodiment of the invention, the insertion circular truncated cone is reinforced to move leftwards to extrude the elastic sheets, and the extrusion force is transmitted to the insertion shell through the stabilizing rod, so that the inner side of the insertion shell and the insertion convex ring for insertion are stably inserted, the insertion sealing degree of the insertion shell is increased again, and the sealing requirement of a pipeline can be met.

Description

Technical Field

[0001] The present application relates to the field of flange technology, and in particular to a leakage-proof high-pressure gas pipeline flange. Background Art

[0002] Flange is also called flange flange or flange. Flange is a part that connects shafts to each other and is used to connect pipe ends. There are also flanges used on the inlet and outlet of equipment, which are used to connect two equipments, such as reducer flange. Flange connection or flange joint refers to a detachable connection that is connected by flange, gasket and bolts as a combined sealing structure. Pipe flange refers to the flange used for piping in pipeline devices, and it refers to the inlet and outlet flanges of equipment used on equipment. There are holes on the flange, and bolts make the two flanges tightly connected. Gaskets are used to seal between flanges. Flanges are divided into threaded flanges, welding flanges and clamping flanges. Flanges are used in pairs. Threaded flanges can be used for low-pressure pipelines, and welding flanges can be used for pressures above four kilograms. Gaskets are added between the two flanges and then tightened with bolts. Flanges of different pressures have different thicknesses, and they use different bolts. When water pumps and valves are connected to pipelines, parts of these equipment are also made into corresponding flange shapes, also known as flange connections. All connecting parts that are bolted and closed around two planes are generally called "flanges".

[0003] However, when ordinary pipe flanges are used, the sealing performance does not meet the requirements for the use environment of high-pressure gas, and the strength does not meet the use environment of high-pressure gas. Therefore, we propose a leak-proof high-pressure gas pipeline flange. Summary of the invention

[0004] The present application provides a leakage-proof high-pressure gas pipeline flange to solve the above-mentioned problems.

[0005] The present application provides a leakage-proof high-pressure gas pipeline flange, comprising: A first pipeline and a second pipeline, wherein flanges are fixedly connected to opposite ends of the first pipeline and the second pipeline, and the flanges are fixedly connected by a plurality of bolts; The left end of the inner cavity of the first pipe is fixedly connected with a plug-in convex ring, the right side of the inner cavity of the second pipe is fixedly connected with a plug-in shell, and the plug-in convex ring is sealably plugged into the plug-in sealing cavity inside the plug-in shell, the inner side wall of the plug-in shell is fixedly connected with a stabilizing rod in an annular array, the opposite ends of the stabilizing rod are fixedly connected with elastic sheets, and the left end of the elastic sheet is fixedly connected with a connecting circular plate, and the elastic sheet is arranged in an annular shape to form a plug-in reinforcement cavity; The reinforced cavity is internally movably plugged with a reinforced plugging truncated cone, a first transmission rod is fixedly plugged in the middle of the right end of the reinforced plugging truncated cone, a plugging ring cavity is opened on the right end of the reinforced plugging truncated cone on the outside of the first transmission rod, the first transmission rod is movably plugged in the inside of the limiting tube, the right end of the limiting tube is fixedly connected with a plugging tube, and the upper part of the plugging tube is fixedly plugged in the left side of the upper end of the first pipe, and the inside of the plugging tube is movably plugged with the second transmission rod through a thread; The lower end of the second transmission rod is rotatably connected to the extrusion block through a bearing, a first inclined surface is provided at the lower left side of the extrusion block, and a second inclined surface is provided at the right end of the first transmission rod, and the first inclined surface and the second inclined surface are pressed and fitted against each other.

[0006] Preferably, the left end of the limiting tube is fixedly connected with an insert ring, the left side of the outer side of the insert ring is fixedly inlaid with a first sealing ring, and the insert ring is movably inserted in the insert ring cavity.

[0007] Preferably, the inner side walls of the limiting tube and the plug-in tube are inlaid with a plurality of second sealing rings at equal intervals.

[0008] Preferably, a third sealing ring is fixedly embedded in the inner side wall of the plug-in convex ring, a fourth sealing ring is fixedly connected to the end of the plug-in convex ring, and the surfaces where the inner side wall of the third sealing ring contacts the sealing cavity are both inclined surfaces.

[0009] Preferably, a fifth sealing ring is provided between the flanges.

[0010] Preferably, the first pipeline and the second pipeline are provided with a buffer section near the flange.

[0011] Preferably, the limiting tube and the plug-in tube are vertically arranged.

[0012] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: The overall structure provided by the embodiment of the present application is such that if the plug-in convex ring is not stably plugged in and the sealing degree does not meet the requirements, the second transmission rod can be screwed by an external wrench to rotate the second transmission rod downward to squeeze the extrusion block downward. Since the first inclined surface is in contact with the second inclined surface, when the extrusion block moves downward, the first transmission rod is forced to move to the left, thereby driving the reinforced plug-in table to move to the left and squeezing each elastic sheet, and the squeezing force is transmitted to the plug-in shell through the stabilizing rod, so that the inner side of the plug-in shell and the plug-in convex ring can be stably plugged in and the sealing degree of the plug-in can be increased again, which can meet the sealing requirements of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 This is a diagram showing the internal structure of the plug-in housing of the present invention; Figure 6 It is a structural diagram of the reinforced plug-in truncated cone of the present invention.

[0016] In the figure: 1. first pipeline; 2. second pipeline; 3. buffer section; 4. flange; 5. bolt; 6. plug-in tube; 7. second transmission rod; 8. fifth sealing ring; 9. plug-in shell; 10. reinforced plug-in cone; 11. stabilizing rod; 12. reinforcing cavity; 13. elastic sheet; 14. round plate; 15. plug-in ring cavity; 16. plug-in ring; 17. first transmission rod; 18. limiting tube; 19. extrusion block; 20. first inclined surface; 21. second sealing ring; 22. sealing cavity; 23. plug-in convex ring; 24. fourth sealing ring; 25. third sealing ring; 26. second inclined surface; 27. first sealing ring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0018] Various embodiments of the present application may exist in the form of a range. It should be understood that the description in the form of a range is only for convenience and simplicity and should not be understood as a hard limit to the scope of the present application; therefore, it should be considered that the range description has specifically disclosed all possible sub-ranges and single values ​​within the range. For example, it should be considered that the range description from 1 to 6 has specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which are applicable regardless of the range. In addition, whenever a numerical range is indicated in the present application, it is meant to include any quoted numbers (fractions or integers) within the indicated range. Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present application, etc., can be purchased from the market or can be prepared by existing equipment.

[0019] In the present application, in the absence of any contrary description, the directional words used, such as "upper" and "lower", are specifically the directions of the drawings in the accompanying drawings. In addition, in the present application, the terms "include", "comprise", etc. refer to "including but not limited to". In the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the present application, "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone. Wherein A, B can be singular or plural. In the present application, "at least one" refers to one or more, and "plural" refers to two or more. "At least one", "at least one of the following" or similar expressions refer to any combination of these items, including any combination of singular items or plural items. For example, "at least one of a, b, or c" or "at least one of a, b and c" can both mean: a, b, c, ab, i.e. a and b, ac, bc, or abc, where a, b, c can be single or plural, respectively.

[0020] like Figure 1-Figure 6 As shown: This embodiment of the application provides a leakage-proof high-pressure gas pipeline flange, including: A first pipeline 1 and a second pipeline 2, wherein the opposite ends of the first pipeline 1 and the second pipeline 2 are fixedly connected with a flange 4, and the flange 4 is fixedly connected by a plurality of bolts 5; The left end of the inner cavity of the first pipe 1 is fixedly connected with a plug-in convex ring 23, the right side of the inner cavity of the second pipe 2 is fixedly connected with a plug-in housing 9, and the plug-in convex ring 23 is sealed and movably plugged into the plug-in sealing cavity 22 inside the plug-in housing 9, and the inner side wall of the plug-in housing 9 is fixedly connected with a stabilizing rod 11 in an annular array, and the opposite ends of the stabilizing rod 11 are fixedly connected with elastic sheets 13, and the left end of the elastic sheet 13 is fixedly connected with a connecting circular plate 14, and the elastic sheet 13 is arranged in an annular shape to form a plug-in reinforcement cavity 12; The reinforced cavity 12 is internally movably plugged with a reinforced plugging truncated table 10, a first transmission rod 17 is fixedly plugged in the middle of the right end of the reinforced plugging truncated table 10, a plugging ring cavity 15 is opened on the right end of the reinforced plugging truncated table 10 on the outside of the first transmission rod 17, the first transmission rod 17 is movably plugged in the inside of a limiting tube 18, the right end of the limiting tube 18 is fixedly connected with a plugging tube 6, and the upper part of the plugging tube 6 is fixedly plugged in the left side of the upper end of the first pipe 1, and the inside of the plugging tube 6 is movably plugged with a second transmission rod 7 through a thread; The lower end of the second transmission rod 7 is rotatably connected to the extrusion block 19 through a bearing. A first inclined surface 20 is provided at the lower left portion of the extrusion block 19. A second inclined surface 26 is provided at the right end of the first transmission rod 17. The first inclined surface 20 and the second inclined surface 26 are pressed and fitted against each other.

[0021] Specifically: if the plug-in convex ring 23 is not stable enough and the sealing degree does not meet the requirements, the second transmission rod 7 can be screwed with an external wrench to rotate the second transmission rod 7 downward to squeeze the extrusion block 19 downward. Since the first inclined surface 20 and the second inclined surface 26 are in contact, when the extrusion block 19 moves downward, it will force the first transmission rod 17 to move to the left, thereby driving the reinforced plug-in table 10 to move to the left and squeeze each elastic sheet 13, and the squeezing force is transmitted to the plug-in shell 9 through the stabilizing rod 11, so that the inner side of the plug-in shell 9 can be stably plugged with the plug-in convex ring 23 and the sealing degree of the plug-in can be increased again.

[0022] like Figure 3 As shown, the left end of the limiting tube 18 is fixedly connected with an insert ring 16 , the left side of the outer side of the insert ring 16 is fixedly inlaid with a first sealing ring 27 , and the insert ring 16 is movably inserted in the insert ring cavity 15 .

[0023] Specifically, the insertion ring 16 in the insertion ring cavity 15 can increase the pressure resistance performance of the insertion point between the limiting tube 18 and the first transmission rod 17 .

[0024] like Figure 3 As shown, the inner side walls of the limiting tube 18 and the plug-in tube 6 are inlaid with a plurality of second sealing rings 21 at equal intervals.

[0025] Specifically, the provision of the second sealing ring 21 can increase the plug-in sealing degree between the second transmission rod 7 and the first transmission rod 17 and the limiting tube 18 and the plug-in tube 6 .

[0026] like Figure 4 As shown: the inner side wall of the plug-in convex ring 23 is fixedly inlaid with a third sealing ring 25, the end of the plug-in convex ring 23 is fixedly connected with a fourth sealing ring 24, and the inner side wall of the third sealing ring 25 and the contact surface of the sealing cavity 22 are both inclined surfaces.

[0027] Specifically, the provision of the fourth sealing ring 24 and the third sealing ring 25 can increase the sealing degree of the plug-in convex ring 23 inserted in the sealing cavity 22 .

[0028] like Figure 2 As shown: a fifth sealing ring 8 is provided between the flanges 4 .

[0029] Specifically, the fifth sealing ring 8 can increase the sealing degree between the two flanges 4 .

[0030] like Figure 1 As shown: the first pipeline 1 and the second pipeline 2 are provided with a buffer section 3 near the flange 4.

[0031] Specifically, the buffer section 3 can reduce the pressure of the incoming gas.

[0032] like Figure 3 As shown: the limiting tube 18 and the plug-in tube 6 are arranged vertically.

[0033] Specifically, the downward displacement of the second transmission rod 7 can press the first transmission rod 17 to move leftward.

[0034] Principle of use: When the pipeline is connected, the flanges 4 are fixedly connected to each other by bolts 5, so that when the connection is made, the plug-in convex ring 23 will be plugged into the inside of the sealing cavity 22, and the reinforcing plug-in truncated cone 10 will be plugged into the inside of the reinforcing cavity 12, so that each elastic sheet 13 will be squeezed, and the squeezing force will be transmitted to the plug-in housing 9 through the stabilizing rod 11, so that the inner side of the plug-in housing 9 and the plug-in convex ring 23 can be plugged stably, and the sealing degree of the plug-in can be increased; After using for a period of time, if the plug-in convex ring 23 is not stable enough and the sealing degree does not meet the requirements, the second transmission rod 7 can be screwed with an external wrench to rotate the second transmission rod 7 downward to squeeze the extrusion block 19 downward. Since the first inclined surface 20 and the second inclined surface 26 are in contact, when the extrusion block 19 moves downward, the first transmission rod 17 is forced to move to the left, thereby driving the reinforced plug-in table 10 to move to the left and squeeze each elastic sheet 13, and the squeezing force is transmitted to the plug-in shell 9 through the stabilizing rod 11, so that the inner side of the plug-in shell 9 can be stably plugged with the plug-in convex ring 23, and the sealing degree of the plug-in is increased again, which can meet the sealing requirements of the pipeline and increase the strength of the plug-in shell 9.

[0035] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. It will be apparent to those skilled in the art that various modifications to these embodiments are possible, and the general principles defined in the present application can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown in the present application, but will conform to the widest scope consistent with the principles and novel features applied for by the present application.

Claims

1. A leak-proof high-pressure gas pipeline flange, characterized in that: include: A first pipeline (1) and a second pipeline (2), wherein flanges (4) are fixedly connected at opposite ends of the first pipeline (1) and the second pipeline (2), and the flanges (4) are fixedly connected by a plurality of bolts (5); The left end of the inner cavity of the first pipe (1) is fixedly connected to a plug-in convex ring (23), the right end of the inner cavity of the second pipe (2) is fixedly connected to a plug-in housing (9), and the plug-in convex ring (23) is sealingly and movably plugged into the plug-in sealing cavity (22) inside the plug-in housing (9), the inner side wall of the plug-in housing (9) is fixedly connected to a stabilizing rod (11) in an annular array, the opposite ends of the stabilizing rod (11) are fixedly connected to elastic sheets (13), and the left end of the elastic sheet (13) is fixedly connected to a connecting circular plate (14), and the elastic sheet (13) is arranged in an annular shape to form a plug-in reinforcement cavity (12); The reinforced cavity (12) is internally movably plugged into a reinforced plugging table (10); a first transmission rod (17) is fixedly plugged into the middle of the right end of the reinforced plugging table (10); a plugging ring cavity (15) is formed on the right end of the reinforced plugging table (10) on the outside of the first transmission rod (17); the first transmission rod (17) is movably plugged into the inside of a limiting tube (18); a plugging tube (6) is fixedly connected to the right end of the limiting tube (18); the upper part of the plugging tube (6) is fixedly plugged into the left side of the upper end of the first pipe (1); and the inside of the plugging tube (6) is movably plugged into the second transmission rod (7) via a thread; The lower end of the second transmission rod (7) is rotatably connected to the extrusion block (19) via a bearing, a first inclined surface (20) is provided at the lower left side of the extrusion block (19), and a second inclined surface (26) is provided at the right end of the first transmission rod (17), the first inclined surface (20) and the second inclined surface (26) being pressed and fitted against each other.

2. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: The left end of the limiting tube (18) is fixedly connected to an insert ring (16), a first sealing ring (27) is fixedly inlaid on the left side of the outer side of the insert ring (16), and the insert ring (16) is movably inserted into the inside of the insert ring cavity (15).

3. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: The inner side walls of the limiting tube (18) and the plug-in tube (6) are both inlaid with a plurality of second sealing rings (21) at equal intervals.

4. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: A third sealing ring (25) is fixedly embedded on the inner side wall of the plug-in convex ring (23), a fourth sealing ring (24) is fixedly connected to the end of the plug-in convex ring (23), and the surfaces where the inner side wall of the third sealing ring (25) contacts the sealing cavity (22) are both inclined surfaces.

5. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: A fifth sealing ring (8) is provided between the flanges (4).

6. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: The first pipeline (1) and the second pipeline (2) are provided with a buffer section (3) near the flange (4).

7. The anti-leakage high-pressure gas pipeline flange according to claim 1, characterized in that: The limiting tube (18) and the plug-in tube (6) are arranged vertically.

Images