High-pressure pipeline flange connecting structure

Abstract

The utility model relates to the technical field of pipeline connection, in particular to a high-pressure pipeline flange connection structure. The high-pressure pipeline flange connecting structure solves the technical problem that in the prior art, a high-pressure pipeline connecting structure is poor in sealing performance. A high-pressure pipeline flange connecting structure comprises pipe bodies, the pipe bodies are spliced end to end, and flanges are arranged at the two ends of each pipe body respectively. The sealing ring is arranged between the pipe bodies; and a connecting assembly; the connecting pipe is arranged, the positioning plate is arranged on the connecting pipe, the screw rod is arranged on the positioning plate, the splicing position of the pipe bodies spliced end to end is located in the connecting pipe, then the screw rod abuts against the flange to enable the pipe bodies spliced end to end to be close to each other, and therefore the pipe bodies spliced end to end are fixed. Therefore, the sealing performance of the high-pressure pipeline joint cannot be affected, the high-pressure pipeline joint has good sealing performance, and the high-pressure pipeline joint is not prone to leakage.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field especially, relate to a high pressure pipeline flange connecting structure. BACKGROUND

[0002] High pressure pipeline usually adopts flange structure to connect, adopts the flange structure to connect, and the pipe body between the head and tail connection has greater contact area, especially, when the sealing ring needs to be set, the cross section area of the pipe body's connecting place is increased due to the setting of the flange, so that the sealing ring is more easily set, or, more sealing rings can be set, the sealing area between the pipe body is increased, effectively avoid the leakage of high pressure pipeline connecting place.

[0003] In prior art, the pipe body connected by flange usually sets through hole directly on the flange, then, two flanges are fixed by bolt again, this connecting mode needs to set through hole on the flange, reduces the sealing area of pipeline connecting place, causes high pressure pipeline to be easy to leak.

[0004] Therefore, the high pressure pipeline connecting structure in prior art has the technical problem of poor sealing performance. UTILITY MODEL CONTENTS

[0005] The utility model provides a high pressure pipeline flange connecting structure, solve the technical problem of poor sealing performance of high pressure pipeline connecting structure in prior art.

[0006] Some implementation solutions that solve the above technical problems include:

[0007] A high pressure pipeline flange connecting structure, including pipe body, the pipe body is spliced at the head and tail, and the pipe body is provided with flange at both ends respectively;

[0008] Sealing ring, the sealing ring is set between the pipe body;

[0009] And connecting assembly, the connecting assembly fixes the pipe body spliced at the head and tail;

[0010] The connecting assembly includes connecting pipe, the connecting pipe is sleeved on the pipe body, and a part of the pipe body spliced at the head and tail is located in the connecting pipe, the connecting assembly further includes positioning plate, the positioning plate is provided with screw rod, the positioning plate is inserted in the connecting pipe along the diameter direction of the connecting pipe, and the screw rod is located between the connecting pipe and the pipe body;

[0011] The positioning plate is provided with the screw hole matched with the screw rod, one end of the screw rod abuts against the flange along the axis direction of the flange, and the screw rod pushes the pipe body spliced at the head and tail to approach each other through the flange;

[0012] The positioning plates are uniformly distributed along the circumferential direction of the pipe body and arranged on the connecting pipe.

[0013] Preferably, the connecting pipe is provided with a socket matched with the positioning plate, the socket penetrates the connecting pipe along the diameter direction of the connecting pipe, the positioning plate comprises a plate body and a limiting plate arranged on the plate body and used for preventing the plate body from tilting, and the screw hole is arranged on the plate body.

[0014] Preferably, the plate body and the limiting plate are in an integral structure, the socket comprises a hole body matched with the plate body and a containing hole containing the limiting plate, the hole body is communicated with the containing hole, and the width of the hole body is smaller than the width of the containing hole.

[0015] Preferably, the connecting pipe is provided with a reinforcing rib improving the strength of the connecting pipe, the reinforcing rib is uniformly distributed along the circumferential direction of the connecting pipe, the reinforcing rib and the connecting pipe are in an integral structure, and the reinforcing rib is arranged along the length direction of the connecting pipe.

[0016] Preferably, the screw rod is provided with an operation part facilitating the rotation of the screw rod at the end far away from the flange, and the operation part and the screw rod are in an integral structure.

[0017] Preferably, the flange and the pipe body are in an integral structure, the flange is provided with a stepped surface arranged along the axial direction of the flange, and one end of the positioning plate is in surface contact with the stepped surface.

[0018] Preferably, the sealing ring comprises a first sealing ring arranged along the axial direction of the pipe body, and the outer wall of the first sealing ring is provided with a second sealing ring, and the second sealing ring is located between the flanges.

[0019] Preferably, the first sealing ring and the second sealing ring are in an integral structure, the pipe body is provided with a groove containing the first sealing ring, the side of the first sealing ring far away from the second sealing ring is flush with the inner wall of the pipe body, and the width of the first sealing ring is greater than the width of the second sealing ring.

[0020] Preferably, the two sides of the second sealing ring are uniformly distributed with sealing ribs, the sealing ribs are in contact with the flanges, and the sealing ribs are at least two circles.

[0021] Preferably, the sealing ribs and the second sealing ring are in an integral structure, and the flange is provided with a ring groove containing the sealing ribs.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] By setting the connecting pipe, and setting the positioning plate on the connecting pipe, the positioning plate is provided with the screw rod, the spliced pipe body is located in the connecting pipe, and the spliced pipe body is close to each other by the screw rod abutting the flange, so that the spliced pipe body is fixed, the connecting mode does not need to open the hole in the flange, so that the sealing performance of the high-pressure pipeline connection is not affected, the high-pressure pipeline connection has good sealing performance, and the high-pressure pipeline connection is not easy to leak.

[0024] The positioning plate is inserted into the connecting pipe, and the spliced pipe body is easy to assemble, only needs to be butted to the spliced pipe body, and the angle of the spliced pipe body does not need to be adjusted during assembly, so that the high-pressure pipeline is easy to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0025] For the purpose of explanation, several embodiments of the present utility model technology are set forth in the following drawings. The following drawings are incorporated into this text and form part of the specific embodiments. In some cases, the well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the present utility model subject technology.

[0026] Figure 1 It is an internal structure diagram of the present utility model.

[0027] Figure 2 It is Figure 1 The enlarged view of A in the figure.

[0028] Figure 3 It is a schematic diagram of the present utility model.

[0029] Figure 4 It is an explosion diagram of the present utility model.

[0030] Figure 5 It is a schematic diagram of the pipe body.

[0031] Figure 6 It is a schematic diagram of the sealing ring.

[0032] Figure 7 It is a schematic diagram of the connecting pipe.

[0033] Figure 8 It is a schematic diagram of the installation position of the screw rod on the positioning plate.

[0034] Shown in the figure:

[0035] 1, pipe body, 11, flange, 111, step surface, 112, ring groove, 12, groove.

[0036] 2, sealing ring, 21, first sealing ring, 22, second sealing ring.

[0037] 3, connecting assembly, 31, connecting pipe, 311, socket, 312, reinforcing rib, 32, positioning plate, 321, plate body, 322, limiting plate, 33, screw rod, 331, operation part. DETAILED DESCRIPTION

[0038] The specific embodiments shown below are intended to serve as a description of the various configurations of the subject technology and are not intended to represent the only configurations in which the subject technology can be practiced. The specific embodiments include specific details for the purposes of providing a thorough understanding of the subject technology. However, it will be apparent to those skilled in the art that the subject technology can be practiced without

[0039] It can be understood that, in this document, the terms such as "first" and "second" are intended to distinguish one entity or operation from another entity or operation, rather than indicate the importance or the order of the same.

[0040] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0041] Referring to Figures 1 to 8 As shown in the figure, a high-pressure pipeline flange connection structure includes pipe bodies 1, the pipe bodies 1 are spliced end to end, and flanges 11 are arranged at both ends of the pipe bodies 1;

[0042] Sealing rings 2 are arranged between the pipe bodies 1;

[0043] and connecting assemblies 3, the connecting assemblies 3 fix the pipe bodies 1 spliced end to end;

[0044] The connecting assemblies 3 include connecting pipes 31, the connecting pipes 31 are sleeved on the pipe bodies 1, and a part of the pipe bodies 1 spliced end to end is located in the connecting pipes 31, the connecting assemblies 3 further include positioning plates 32, the positioning plates 32 are provided with screw rods 33, the positioning plates 32 are inserted into the connecting pipes 31 along the diameter direction of the connecting pipes 31, and the screw rods 33 are located between the connecting pipes 31 and the pipe bodies 1;

[0045] The positioning plate 32 is provided with a screw hole matched with the screw rod 33, one end of the screw rod 33 abuts against the flange 11 along the axial direction of the flange 11, and the screw rod 33 pushes the head-to-tail joint pipe bodies 1 to be close to each other through the flange 11.

[0046] The positioning plate 32 is uniformly distributed along the circumferential direction of the pipe body 1 on the connecting pipe 31, and each positioning plate 32 is provided with the screw rod 33.

[0047] It can be understood that the connection part of the head-to-tail joint pipe body 1 is located in the connecting pipe 31, and since the length of the connecting pipe 31 is determined, the distance between the positioning plates 32 arranged at both ends of the connecting pipe 31 is also determined. When the screw rod 33 is rotated, the screw rod 33 contacts the flange 11 and pushes the flange 11 to be close to each other. Since the distance between the positioning plates 32 is determined, the flanges 11 on the pipe body 1 are close to each other by rotating the screw rod 33, thereby achieving the fixation of the pipe body 1.

[0048] The larger the sealing area between the head-to-tail joint pipe bodies 1 is, the better the sealing performance is. In some embodiments, a sealing ring can be arranged between the connecting pipe 31 and the flange 11. The sealing ring 2 is matched with the sealing ring to seal the connection part of the high-pressure pipeline, so that the connection part of the sealing pipeline has a larger sealing area, thereby further improving the sealing performance of the high-pressure pipeline.

[0049] Referring to Figures 1 to 8 It can be understood that the distance between the two positioning plates 32 can change when the positioning plate 32 is inclined, which is not desired by the user. In some embodiments, the connecting pipe 31 is provided with a insertion hole 311 matched with the positioning plate 32, the insertion hole 311 penetrates the connecting pipe 31 along the diameter direction of the connecting pipe 31, the positioning plate 32 comprises a plate body 321 and a limiting plate 322 arranged on the plate body 321 and used for preventing the plate body 321 from being inclined, and the screw hole is arranged on the plate body 321.

[0050] In some embodiments, the plate body 321 and the limiting plate 322 are in an integrated structure, the insertion hole 311 comprises a hole body matched with the plate body 321 and a containing hole containing the limiting plate 322, the hole body is communicated with the containing hole, and the width of the hole body is smaller than the width of the containing hole.

[0051] The side wall of the containing hole and the side wall of the hole body can position the positioning plate 32 to prevent the positioning plate 32 from being inclined, so that the positioning plate 32 is not easy to be inclined in the long-term use process, and the stability of the high-pressure pipeline flange connection structure is improved, and the high-pressure pipeline is not easy to leak in the long-term use process.

[0052] Generally, the connecting pipe 31 should have high strength to prevent the connecting pipe 31 from being deformed and causing the failure of the connecting assembly 3. In some embodiments, the connecting pipe 31 is provided with reinforcing ribs 312 for improving the strength of the connecting pipe 31. The reinforcing ribs 312 are uniformly distributed along the circumferential direction of the connecting pipe 31. The reinforcing ribs 312 are in an integral structure with the connecting pipe 31, and the reinforcing ribs 312 are arranged along the length direction of the connecting pipe 31.

[0053] In some embodiments, the cross-sectional shape of the reinforcing ribs 312 can be semicircular, or the cross-sectional shape of the reinforcing ribs 312 can also be polygonal.

[0054] Referring to Figures 1 to 8 In some embodiments, the screw rod 33 is provided with an operation part 331 at the end away from the flange 11 for facilitating the rotation of the screw rod 33. The operation part 331 is in an integral structure with the screw rod 33.

[0055] The operation part 331 can be provided with an operation hole. The cross-sectional shape of the operation hole can be polygonal, so that the operation hole can be matched with a tool to facilitate the rotation of the screw rod 33 by using the tool.

[0056] In practice, when the positioning plate 32 and the stepped surface 111 adopt surface contact, the positioning plate 32 and the flange 11 can further prevent the inclination of the positioning plate 32 due to the high strength of the positioning plate 32 and the flange 11. For example, in some embodiments, the flange 11 is in an integral structure with the pipe body 1. The flange 11 is provided with a stepped surface 111 arranged along the axial direction of the flange 11. One end of the positioning plate 32 forms surface contact with the stepped surface 111.

[0057] A larger sealing area will help to improve the sealing performance of the pipeline connection. In some embodiments, the sealing ring 2 includes a first sealing ring 21 arranged along the axial direction of the pipe body 1. The outer wall of the first sealing ring 21 is provided with a second sealing ring 22. The second sealing ring 22 is located between the flanges 11.

[0058] Referring to Figures 1 to 8 In some embodiments, the first sealing ring 21 and the second sealing ring 22 are in an integral structure. The pipe body 1 is provided with a groove 12 for accommodating the first sealing ring 21. The side of the first sealing ring 21 away from the second sealing ring 22 is flush with the inner wall of the pipe body 1. The width of the first sealing ring 21 is greater than the width of the second sealing ring 22.

[0059] In some embodiments, the two sides of the second sealing ring 22 are uniformly distributed with sealing ribs. The sealing ribs are in contact with the flanges 11. The sealing ribs have at least two circles.

[0060] The sealing rib is in an integral structure with the second sealing ring 22, and the flange 11 is provided with a ring groove 112 for accommodating the sealing rib.

[0061] In some embodiments, the sealing ring can be in an integral structure with the sealing ring 2 to further optimize the sealing performance of the pipeline joint.

[0062] The above has introduced the subject technical scheme of the utility model and the corresponding details, and it can be understood that the above introduction is only some implementation of the subject technical scheme of the utility model, and some details can be omitted in the specific implementation.

[0063] In addition, in some implementation of the utility model above, multiple implementation can be combined, and various combination schemes are not listed one by one due to the length. The person skilled in the art can freely combine the above implementation according to the needs in the specific implementation to obtain better application experience.

[0064] The person skilled in the art can obtain other details or drawings according to the subject technical scheme of the utility model and the drawings in the implementation of the subject technical scheme of the utility model, and it is obvious that these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.

Claims

1. A high pressure pipe flange connection structure, characterized by: The utility model provides a kind of pipe connecting assembly, including pipe body (1), the pipe body (1) is spliced head to tail, flange (11) is separately provided at the both ends of the pipe body (1); Sealing ring (2), the sealing ring (2) is arranged between the pipe body (1); And connecting assembly (3), the connecting assembly (3) fixes the pipe body (1) spliced head to tail; The connecting assembly (3) includes connecting pipe (31), the connecting pipe (31) is sleeved in the pipe body (1), a part of the pipe body (1) spliced head to tail is located in the connecting pipe (31), the connecting assembly (3) further includes positioning plate (32), the positioning plate (32) is provided with screw rod (33), the positioning plate (32) is inserted in the connecting pipe (31) along the diameter direction of the connecting pipe (31), and the screw rod (33) is located between the connecting pipe (31) and the pipe body (1); The positioning plate (32) is provided with screw hole matched with the screw rod (33), one end of the screw rod (33) abuts against the flange (11) along the axial direction of the flange (11), and the screw rod (33) pushes the pipe body (1) spliced head to tail to each other by the flange (11); The positioning plate (32) is uniformly distributed in the connecting pipe (31) along the circumferential direction of the pipe body (1), and each positioning plate (32) is provided with the screw rod (33).

2. The high pressure piping flange joint structure according to claim 1, characterized by: The connecting pipe (31) is provided with the insertion hole (311) matched with the positioning plate (32), the insertion hole (311) penetrates the connecting pipe (31) along the diameter direction of the connecting pipe (31), the positioning plate (32) includes plate body (321) and limiting plate (322) arranged on the plate body (321) and used for preventing the plate body (321) from tilting, and the screw hole is arranged on the plate body (321).

3. The high pressure pipe flange joint structure according to claim 2, characterized by: The plate body (321) and the limiting plate (322) are of integral structure, the insertion hole (311) includes hole body matched with the plate body (321) and containing hole containing the limiting plate (322), the hole body is communicated with the containing hole, and the width of the hole body is less than the width of the containing hole.

4. The high pressure pipe flange joint structure according to claim 3, characterized by: The connecting pipe (31) is provided with reinforcing rib (312) for improving the strength of the connecting pipe (31), the reinforcing rib (312) is uniformly distributed along the circumferential direction of the connecting pipe (31), the reinforcing rib (312) and the connecting pipe (31) are of integral structure, and the reinforcing rib (312) is arranged along the length direction of the connecting pipe (31).

5. The high pressure pipe flange joint structure according to claim 4, characterized by: One end of the screw rod (33) away from the flange (11) is provided with operation part (331) for facilitating the rotation of the screw rod (33), and the operation part (331) and the screw rod (33) are of integral structure.

6. The high pressure pipe flange joint structure according to any one of claims 1 to 5, characterized by: The flange (11) and the pipe body (1) are of integral structure, the flange (11) is provided with stepped surface (111), the stepped surface (111) is arranged along the axial direction of the flange (11), and one end of the positioning plate (32) forms surface contact with the stepped surface (111).

7. The high pressure pipe flange joint structure according to claim 6, characterized by: The sealing ring (2) comprises a first sealing ring (21) arranged along the axial direction of the pipe body (1), and an outer wall of the first sealing ring (21) is provided with a second sealing ring (22) located between the flanges (11).

8. The high pressure pipe flange joint structure according to claim 7, characterized by: The first sealing ring (21) and the second sealing ring (22) are in an integrated structure, the pipe body (1) is provided with a groove (12) accommodating the first sealing ring (21), one side of the first sealing ring (21) away from the second sealing ring (22) is flush with the inner wall of the pipe body (1), and the width of the first sealing ring (21) is greater than the width of the second sealing ring (22).

9. The high pressure pipe flange joint structure according to claim 8, characterized by: The second sealing ring (22) is uniformly provided with sealing ribs on both sides, the sealing ribs are in contact with the flanges (11), and the sealing ribs have at least two circles.

10. The high pressure pipe flange joint structure according to claim 9, characterized by: The sealing ribs and the second sealing ring (22) are in an integrated structure, and the flanges (11) are provided with ring grooves (112) accommodating the sealing ribs.

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