Mechanical high-pressure sealing flange structure for petrochemical pipeline

Abstract

The invention discloses a mechanical high-pressure sealing flange structure for a petrochemical pipeline, and belongs to the field of flanges. Comprising two connecting pipelines; the connecting flanges are movably arranged on the connecting pipe, and the two connecting flanges are in contact with each other; the plurality of connecting bolts are uniformly connected between the two connecting flanges in a threaded manner in the circumferential direction; the mounting ring is movably arranged on the connecting pipeline; the connecting rod is fixedly connected between the mounting ring and the connecting flange; the fixing bolt is in threaded connection with the mounting ring, and the fixing bolt is in threaded connection with the connecting pipeline; the reinforcing groove is formed in the connecting flange; and the reinforcing assembly is arranged on the connecting pipeline and corresponds to the reinforcing groove. The mechanical high-pressure sealing flange structure for the petrochemical engineering pipeline has the beneficial effect that the mechanical high-pressure sealing flange structure for the petrochemical engineering pipeline is provided.

Description

Technical Field

[0001] The present application relates to the field of flanges, and in particular to a mechanical high-pressure sealing flange structure for petrochemical pipelines. Background Art

[0002] The sealing principle of the sealing flange is extremely simple: the two sealing surfaces of the bolt squeeze the flange gasket against each other and form a seal, but this also causes the seal to be destroyed. In order to maintain the seal, a huge bolt force must be maintained; for this reason, the bolt must be made larger, and larger bolts must be matched with larger nuts, which means that bolts with larger diameters are needed to create conditions for tightening the nuts.

[0003] The structure of the product can refer to the structure of a sealing flange disclosed in Chinese Patent Document No. 2020222308, including a connecting plate, an annular plate, a connecting head, an adjusting bolt, a fixing bolt, a flange body, a fixing nut and a bearing, wherein a connecting hole is provided on the outer side of the connecting plate, and the annular plate and one end of the connecting head are both fixedly connected to the outer side of the connecting plate; a sealing groove is provided on the inner side of the connecting plate, and sealing plates are fixedly connected to both sides of the sealing gasket, and the outer end of the sealing plate is engaged with the sealing groove; a sealing ring is provided on the outer side of the sealing plate, and one end of the sealing ring is fixedly connected to the side of the sealing gasket, and the sealing ring is engaged with the inside of the connecting hole. An annular plate is provided on the outer side of the connecting pipe, and the adjusting bolt can be screwed into the threaded hole by twisting it, thereby driving the pressure plate to move to the outer side of the connecting pipe until the bottom end of the pressure plate is connected to the surface of the connecting pipe and the external connecting part, so that the connecting pipe and the external connecting part can be auxiliary fixed.

[0004] However, in this patent, the two connecting pipes and the connecting flange are connected only by fixing bolts, so that the connection stability cannot be optimized.

[0005] A mechanical high-pressure sealing flange structure for a petrochemical pipeline is now provided. Summary of the invention

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a mechanical high-pressure sealing flange structure for a petrochemical pipeline, including: a connecting pipe, which is set to two; a connecting flange, which is movably set on the connecting pipe, and the two connecting flanges are in contact with each other; a connecting bolt, which is set to multiple, and is circumferentially evenly threaded between the two connecting flanges; a mounting ring, which is movably set on the connecting pipe; a connecting rod, which is fixed between the mounting ring and the connecting flange; a fixing bolt, which is threadedly connected to the mounting ring, and the fixing bolt is threadedly connected to the connecting pipe; a reinforcement groove, which is opened on the connecting flange; a reinforcement assembly, which is arranged on the connecting pipe and corresponds to the reinforcement groove, and is used to reinforce the connecting flange; a sealing plate, which is set to two, and a mounting groove is opened on the sealing plate, and the sealing plate is semicircular, and the periphery of the connecting flange is arranged on the mounting groove; a connecting assembly, which is arranged between the two sealing plates, and is used to connect the two sealing plates; a stabilizing assembly, which is arranged between the mounting ring and the sealing plate.

[0008] When two connecting pipes need to be connected, the two connecting pipes can be contacted and aligned, and the two connecting flanges can be contacted, and then the two connecting flanges can be connected by rotating the connecting bolts, so that the two connecting flanges are connected and the two connecting pipes are connected. Under the action of the mounting ring, the stability of the connecting flange is improved, and at the same time, the fixing bolt can be rotated so that the fixing bolt is threadedly connected to the connecting pipe, and then the fixing bolt is lowered, and then the fixing bolt is contacted with the push rod, and then under the action of the first inclined surface on the push rod, the push rod is moved, so that the push rod moves toward the connecting flange, and under the action of the second inclined surface, the push rod pushes the fixing rod, so that the fixing rod is clamped on the reinforcement groove, and on the fixing rod By snapping onto the reinforcement groove, the installation stability of the connecting flange is improved, and the stability of the mounting ring is also improved. Under the action of the first reset bolt and the second reset bolt, disassembly is also convenient. After installation, the two sealing plates can be installed so that the connecting flange is located on the mounting groove and the two mounting plates are in contact to improve the sealing effect. Then, under the action of the fixing spring, the connecting strip is stably snapped onto the connecting groove, thereby improving the stability of the connection of the connecting mounting plates and facilitating the disassembly of the two sealing plates. Under the action of the stabilizing rod, stabilizing bolt and stabilizing plate, the stability of the connection between the two sealing plates is further improved. Under the action of the sealing ring and the sealing groove, the sealing effect is improved.

[0009] Furthermore, the reinforcement component includes a push rod, which is arranged in the connecting pipe, and a first connecting piece is fixedly connected to the push rod, a second connecting piece is fixedly connected to the connecting pipe, a sliding rod is fixed to the first connecting piece, the sliding rod passes through the second connecting piece, and the sliding rod and the second connecting piece are slidably installed, a first return spring is sleeved on the sliding rod, and the first return spring is fixed between the first connecting piece and the second connecting piece, a first inclined surface is opened on one end of the push rod, and the fixing bolt corresponds to the first inclined surface, a fixing component corresponding to the push rod is arranged on the connecting pipe, and the fixing component corresponds to the reinforcement groove.

[0010] Further, the fixing assembly includes a fixing rod, a through groove is provided on the connecting pipe, and the fixing rod is sealingly and slidably installed on the through groove, and the fixing rod corresponds to the reinforcement groove, and a third connecting plate is fixedly connected to the fixing rod, a connecting rod is fixedly connected to the connecting pipe, the connecting rod passes through the third connecting plate, and the connecting rod and the third connecting plate are slidably installed, a second return spring is sleeved on the connecting rod, and the second return spring is fixed to the connecting pipe and the third connecting plate, a second inclined surface is provided on the top rod, and the second inclined surface corresponds to the fixing rod, and a third inclined surface corresponding to the second inclined surface is provided on the fixing rod.

[0011] Further, the connecting assembly includes mounting plates, which are respectively fixed on both ends of the sealing plate, and the two mounting plates are in contact with each other, and a connecting strip is slidably installed on one of the mounting plates, and a connecting groove corresponding to the connecting strip is opened on the other mounting plate, a fixing frame is fixed on the mounting plate, and the connecting strip passes through the fixing frame, and the connecting strip and the fixing frame are slidably installed, a fixing spring is sleeved on the connecting strip, and the fixing spring is fixed between the mounting plate and the fixing frame.

[0012] Furthermore, the stabilizing assembly includes a stabilizing rod, one end of which is fixedly connected to the mounting ring, and the other end of which is fixedly connected to a stabilizing plate, two stabilizing bolts are threadedly connected to the stabilizing plate, and the two stabilizing bolts are threadedly connected to two sealing plates in turn.

[0013] Furthermore, a sealing ring is fixedly connected to one of the sealing flanges, and a sealing groove corresponding to the sealing ring is formed on the other sealing flange.

[0014] Furthermore, the fixing bolts, reinforcement grooves and reinforcement components are each provided in two groups.

[0015] Furthermore, the connecting rod is cylindrical.

[0016] Furthermore, the stabilizing components are provided in two groups and are symmetrically arranged on the mounting ring.

[0017] Furthermore, the connecting bolts are arranged between the sealing plate and the connecting pipe.

[0018] The beneficial effect of the present application is that it provides a mechanical high-pressure sealing flange structure for petrochemical pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0020] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0021] In the attached picture:

[0022] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure;

[0024] Figure 3 It is a cross-sectional view;

[0025] Figure 4 It is a cross-sectional view of the connecting pipe;

[0026] Figure 5 yes Figure 1 A magnified view of part A;

[0027] Figure 6 yes Figure 3 A magnified view of part B;

[0028] Figure 7 yes Figure 3 Enlarged view of part C;

[0029] Figure 8 yes Figure 3 Enlarged view of part D.

[0030] Reference numerals:

[0031] 1. Connecting pipe; 2. Mounting ring; 3. Fixing bolt; 4. Connecting flange; 5. Connecting bolt; 6. Sealing plate; 7. Stabilizing rod; 8. Connecting rod; 9. Fixing frame; 10. Mounting plate; 11. Connecting strip; 12. Connecting groove; 13. Fixing spring; 14. Through groove; 15. Stabilizing plate; 16. Stabilizing bolt; 17. Push rod; 18. First inclined plane; 19. Second connecting plate; 20. Sliding rod; 21. First connecting plate; 22. First return spring; 23. Second return spring; 24. Fixing rod; 25. Third connecting plate; 26. Connecting rod; 27. Third inclined plane; 28. Sealing groove; 29. ​​Sealing ring; 30. Mounting groove; 31. Reinforcement groove; 32. Second inclined plane. DETAILED DESCRIPTION

[0032] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0033] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0034] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0035] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0036] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0037] Reference Figure 1-8A mechanical high-pressure sealing flange structure for a petrochemical pipeline includes: a connecting pipe 1, a connecting flange 4, a connecting bolt 5, a mounting ring 2, a connecting rod 8, a fixing bolt 3, a reinforcement groove 31, a reinforcement component, a sealing plate 6, a connecting component, and a stabilizing component. The connecting pipe 1 is provided with two. The connecting flange 4 is movably provided on the connecting pipe, and the two connecting flanges 4 are in contact with each other. The connecting bolt 5 is provided with a plurality of connecting bolts, and is circumferentially and uniformly threadedly connected between the two connecting flanges 4. The mounting ring 2 is movably provided on the connecting pipe 1. The connecting rod 8 is fixedly connected between the mounting ring 2 and the connecting flange 4. The fixing bolt 3 is threadedly connected to the mounting ring 2, and the fixing bolt 3 is threadedly connected to the connecting pipe 1. The reinforcement groove 31 is provided on the connecting flange 4. The reinforcement component is provided on the connecting pipe 1, and corresponds to the reinforcement groove 31, and is used to reinforce the connecting flange 4. The sealing plate 6 is provided with two sealing plates, and a mounting groove 30 is provided on the sealing plate 6, and the sealing plate 6 is semicircular, and the periphery of the connecting flange 4 is provided on the mounting groove 30. The connecting assembly is arranged between the two sealing plates 6 for connecting the two sealing plates 6. The stabilizing assembly is arranged between the mounting ring 2 and the sealing plates 6.

[0038] The reinforcement component includes a push rod 17, which is arranged in the connecting pipe 1, and a first connecting piece 21 is fixedly connected to the push rod 17, a second connecting piece 19 is fixedly connected to the connecting pipe 1, a sliding rod 20 is fixedly connected to the first connecting piece 21, the sliding rod 20 passes through the second connecting piece 19, and the sliding rod 20 and the second connecting piece 19 are slidably installed, a first return spring 22 is sleeved on the sliding rod 20, and the first return spring 22 is fixed between the first connecting piece 21 and the second connecting piece 19, and a first inclined surface 18 is opened on one end of the push rod 17, and the fixing bolt 3 corresponds to the first inclined surface 18, a fixing component corresponding to the push rod 17 is provided on the connecting pipe 1, and the fixing component corresponds to the reinforcement groove 31.

[0039] The fixing assembly includes a fixing rod 24, a through groove 14 is provided on the connecting pipe 1, and the fixing rod 24 is sealingly and slidably installed on the through groove 14, and the fixing rod 24 corresponds to the reinforcement groove 31, and a third connecting piece 25 is fixedly connected to the fixing rod 24, a connecting rod 26 is fixedly connected to the connecting pipe 1, the connecting rod 26 passes through the third connecting piece 25, and the connecting rod 26 and the third connecting piece 25 are slidably installed, a second return spring 23 is sleeved on the connecting rod 26, and the second return spring 23 is fixed to the connecting pipe 1 and the third connecting piece 25, a second inclined surface 32 is provided on the top rod 17, and the second inclined surface 32 corresponds to the fixing rod 24, and a third inclined surface 27 corresponding to the second inclined surface 32 is provided on the fixing rod 24.

[0040] The connecting assembly includes a mounting plate 10, which is fixedly connected to both ends of the sealing plate 6 respectively, and the two mounting plates 10 are in contact with each other, and a connecting strip 11 is slidably installed on one of the mounting plates 10, and a connecting groove 12 corresponding to the connecting strip 11 is opened on the other mounting plate 10, a fixing frame 9 is fixedly connected to the mounting plate 10, and the connecting strip 11 passes through the fixing frame 9, and the connecting strip 11 and the fixing frame 9 are slidably installed, a fixing spring 13 is sleeved on the connecting strip 11, and the fixing spring 13 is fixedly connected between the mounting plate 10 and the fixing frame 9.

[0041] The stabilizing assembly includes a stabilizing rod 7, one end of which is fixedly connected to the mounting ring 2, and a stabilizing plate 15 is fixedly connected to the other end of the stabilizing rod 7, two stabilizing bolts 16 are threadedly connected to the stabilizing plate 15, and the two stabilizing bolts 16 are threadedly connected to the two sealing plates 6 in sequence. A sealing ring 29 is fixedly connected to one of the sealing flanges, and a sealing groove 28 corresponding to the sealing ring 29 is provided on the other sealing flange. Two sets of fixing bolts 3, reinforcement grooves 31, and reinforcement assemblies are provided. The connecting rod 8 is cylindrical. Two sets of stabilizing assemblies are provided, and are symmetrically arranged on the mounting ring 2. The connecting bolts 5 are arranged between the sealing plate 6 and the connecting pipe 1.

[0042] Working process: when it is necessary to connect two connecting pipes 1, the two connecting pipes 1 can be contacted and aligned, and the two connecting flanges 4 can be contacted, and then the two connecting flanges 4 can be connected by rotating the connecting bolts 5, so that the two connecting flanges 4 are connected, and the two connecting pipes 1 are also connected, and under the action of the mounting ring 2, the stability of the connecting flange 4 is improved, and at the same time, the fixing bolt 3 can be rotated, so that the fixing bolt 3 is threadedly connected to the connecting pipe 1, and then the fixing bolt 3 is lowered, and then the fixing bolt 3 is in contact with the push rod 17, and then under the action of the first inclined surface 18 on the push rod 17, the push rod 17 is moved, so that the push rod 17 moves toward the connecting flange 4, and under the action of the second inclined surface 32, the push rod 17 pushes the fixing rod 24, so that the fixing rod 24 is clamped to the reinforcement groove 31 , under the action of the fixing rod 24 being clamped on the reinforcement groove 31, the installation stability of the connecting flange 4 is improved, and the stability of the mounting ring 2 is also improved. Under the action of the first reset bolt and the second reset bolt, it is also convenient to disassemble. After installation, the two sealing plates 6 can be installed so that the connecting flange 4 is located on the mounting groove 30, and the two mounting pieces 10 are in contact, thereby improving the sealing effect. Then, under the action of the fixing spring 13, the connecting strip 11 is stably clamped on the connecting groove 12, thereby improving the stability of the connection of the connecting mounting piece 10, and also facilitating the disassembly of the two sealing plates 6. Under the action of the stabilizing rod 7, the stabilizing bolt 16, and the stabilizing piece 15, the stability of the connection of the two sealing plates 6 is further improved. Under the action of the sealing ring 29 and the sealing groove 28, the sealing effect is improved.

[0043] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A mechanical high-pressure sealing flange structure for a petrochemical pipeline, comprising: Connect the pipes, set to two; A connecting flange is movably arranged on the connecting pipe, and the two connecting flanges are in contact with each other; The connecting bolts are arranged in a plurality and are threadedly connected between the two connecting flanges in a uniform circumferential direction; Features: The mechanical high-pressure sealing flange structure for petrochemical pipelines also includes: A mounting ring, movably arranged on the connecting pipe; A connecting rod, fixed between the mounting ring and the connecting flange; The fixing bolt is threadedly connected to the mounting ring, and the fixing bolt is threadedly connected to the connecting pipe; A reinforcement groove is provided on the connecting flange; A reinforcement component, which is arranged on the connecting pipe and corresponds to the reinforcement groove, and is used to reinforce the connecting flange; Two sealing plates are provided, and mounting grooves are provided on the sealing plates. The sealing plates are semicircular, and the periphery of the connecting flange is provided on the mounting grooves; A connecting assembly, disposed between the two sealing plates, and used to connect the two sealing plates; A stabilizing assembly is disposed between the mounting ring and the sealing plate.

2. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The reinforcement assembly includes a push rod, which is arranged in the connecting pipe and has a first connecting piece fixedly connected to the push rod, a second connecting piece fixedly connected to the connecting pipe, a sliding rod fixedly connected to the first connecting piece, the sliding rod passes through the second connecting piece, and the sliding rod and the second connecting piece are slidably installed, a first return spring is sleeved on the sliding rod, and the first return spring is fixedly connected between the first connecting piece and the second connecting piece, a first inclined surface is provided on one end of the push rod, and a fixing bolt corresponds to the first inclined surface, a fixing assembly corresponding to the push rod is provided on the connecting pipe, and the fixing assembly corresponds to the reinforcement groove.

3. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 2 is characterized in that: The fixing assembly includes a fixing rod, a through groove is provided on the connecting pipe, and the fixing rod is sealingly and slidably installed on the through groove, and the fixing rod corresponds to the reinforcement groove, and a third connecting piece is fixedly connected to the fixing rod, a connecting rod is fixedly connected to the connecting pipe, the connecting rod passes through the third connecting piece, and the connecting rod and the third connecting piece are slidably installed, a second return spring is sleeved on the connecting rod, and the second return spring is fixed to the connecting pipe and the third connecting piece, a second inclined surface is provided on the top rod, and the second inclined surface corresponds to the fixing rod, and a third inclined surface corresponding to the second inclined surface is provided on the fixing rod.

4. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The connecting assembly includes mounting plates, which are respectively fixed on both ends of the sealing plate, and the two mounting plates are in contact with each other, and a connecting strip is slidably mounted on one of the mounting plates, and a connecting groove corresponding to the connecting strip is provided on the other mounting plate, a fixing frame is fixed on the mounting plate, and the connecting strip passes through the fixing frame, and the connecting strip and the fixing frame are slidably mounted, a fixing spring is sleeved on the connecting strip, and the fixing spring is fixed between the mounting plate and the fixing frame.

5. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The stabilizing assembly comprises a stabilizing rod, one end of which is fixedly connected to the mounting ring, and the other end of which is fixedly connected to a stabilizing plate, two stabilizing bolts are threadedly connected to the stabilizing plate, and the two stabilizing bolts are threadedly connected to two sealing plates in turn.

6. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: A sealing ring is fixedly connected to one of the sealing flanges, and a sealing groove corresponding to the sealing ring is formed on the other sealing flange.

7. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The fixing bolts, reinforcement grooves and reinforcement components are each provided in two groups.

8. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The connecting rod is cylindrical.

9. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1 is characterized in that: The stabilizing components are provided in two groups and are symmetrically arranged on the mounting ring.

10. The mechanical high-pressure sealing flange structure for petrochemical pipelines according to claim 1, characterized in that: The connecting bolts are arranged between the sealing plate and the connecting pipe.

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