Pipe joint and pipeline connecting structure

Abstract

The utility model discloses a pipe joint and a pipeline connecting structure, and the pipe joint comprises a first tile-shaped body (1), a second tile-shaped body (2) and a sealing ring (3), a supporting sleeve (4) is arranged between the sealing ring (3) and the groove wall of the annular groove (10), the sealing ring (3) is sleeved with the supporting sleeve (4), the supporting sleeve (4) is attached to the outer wall of the sealing ring (3), the supporting sleeve (4) is in an open ring shape extending in the circumferential direction of the sealing ring (3), and an opening (4e) of the supporting sleeve (4) is staggered from the butt joint position of the first protruding lug (12) and the second protruding lug (22). At the butt joint of the first convex lug and the second convex lug, the supporting sleeve supports the sealing ring and prevents the sealing ring from expanding towards a gap at the butt joint of the first convex lug and the second convex lug, so that the service life of the sealing ring is prolonged, and the sealing effect is ensured; meanwhile, the supporting sleeve is in the shape of an open ring, and a deformation space is reserved for the supporting sleeve through the opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline connection technical field, concretely relates to a pipe joint and pipeline connection structure. BACKGROUND

[0002] In the pipeline connection structure, the pipe joint is the connecting tool between the pipe fittings. The pipe fittings are used for conveying gas, liquid and other fluids.

[0003] The pipe joint generally includes the first tile body, the second tile body and the sealing ring, the inner wall of the first tile body has the first arc groove, and the first tile body further has the first lug; the second tile body is connected in butt joint with the first tile body, the inner wall of the second tile body has the second arc groove spliced into the annular groove with the first arc groove, and the second tile body has the second lug connected with the first lug; the sealing ring is arranged in the annular groove. The first pipe fitting and the second pipe fitting are inserted into the sealing ring. For example, the Chinese utility model patent with the authorization number CN 208295349 U discloses a pipeline joint.

[0004] Because of the limitation of manufacturing precision, production process and the like, there can be a gap at the butt joint of the first lug and the second lug, and after the butt joint of the first arc groove and the second arc groove, a continuous whole circle cannot be formed, that is, the annular groove is disconnected at the butt joint of the first lug and the second lug in the circumferential direction, for example, the first tile body and the second tile body are formed by stamping, and an arc surface is formed at the bending part to form the lug, the gap at the butt joint of the first lug and the second lug is inevitable, so that the sealing ring lacks support at the position of the gap. Under the action of the fluid in the pipe fitting, the sealing ring expands or shrinks to the gap, and when the fluid pressure is unstable, the expansion and shrinkage of the sealing ring at the position are relatively frequent, and the local part is prone to aging, thereby affecting the service life of the sealing ring and causing sealing failure.

[0005] Therefore, further improvement is needed. UTILITY MODEL CONTENTS

[0006] The first technical problem to be solved by the utility model is to provide a pipe joint capable of preventing the sealing ring from expanding to the gap at the butt joint of the first lug and the second lug in view of the status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a pipeline connection structure.

[0008] The utility model adopts the technical scheme that a pipe joint is provided to solve the first technical problem, and the pipe joint is characterized by comprising

[0009] The first tile body has the first lug, and the second tile body has the second lug connected with the first lug.

[0010] A second tile body is connected to the first tile body in abutment, and the inner wall of the second tile body has a second arc-shaped slot that is spliced with the first arc-shaped slot to form an annular recess; the second tile body has a second lug connected to the first lug;

[0011] A sealing ring is annular and is arranged in the annular recess;

[0012] It is characterized in that:

[0013] The sealing ring and the annular recess have a support sleeve arranged between them, the support sleeve is sleeved on the outer wall of the sealing ring and is attached to the outer wall of the sealing ring, the support sleeve is an open annular extending along the circumference of the sealing ring, and the opening of the support sleeve is offset from the abutment position of the first lug and the second lug. In order to facilitate the manufacture and assembly of the support sleeve, the support sleeve comprises a first support sleeve that is an open annular, and a second support sleeve that is an open annular and is axially spaced from the first support sleeve;

[0014] The opening of the first support sleeve is referred to as a first opening, and the opening of the second support sleeve is referred to as a second opening, and the first opening and the second opening are both offset from the abutment position of the first lug and the second lug.

[0015] In order to make the sealing ring more evenly affected by the support sleeve, the first opening and the second opening are aligned in the axial direction.

[0016] In order to improve the support effect on the sealing ring, the first support sleeve and the second support sleeve abut in the axial direction. In this way, the first support sleeve and the second support sleeve do not leave gaps in the axial direction, and the support effect on the sealing ring is better.

[0017] In order to make the first support sleeve and the second support sleeve universal, the support sleeve is evenly split in the axial direction to form the first support sleeve and the second support sleeve.

[0018] In order to improve the support effect on the sealing ring, the strength of the support sleeve is greater than the strength of the sealing ring.

[0019] The shape of the sealing ring and the support sleeve can be various, preferably, the sealing ring comprises

[0020] a ring body;

[0021] two lips, each connected to a corresponding edge of the ring body in the axial direction;

[0022] The support sleeve comprises

[0023] a first section attached to the outer wall of the ring body;

[0024] two second sections, each connected to a corresponding edge of the first section in the axial direction, and each second section is attached to the outer wall of a corresponding lip.

[0025] In order to prevent the supporting sleeve from interfering with the sealing of the sealing ring, one end of the lip connected with the ring body is a fixed end, and the other end is a free end, which extends out of the supporting sleeve. In this way, the free end can play a sealing effect without being affected by the supporting sleeve.

[0026] The utility model discloses a pipe connecting structure, which comprises a pipe joint.

[0027] Preferably, the first pipe and the second pipe are axially inserted into the sealing ring, and the sealing ring seals and connects the first pipe and the second pipe in the locked state of the first lug and the second lug.

[0028] Compared with the prior art, the utility model has the advantages that the supporting sleeve is provided, the opening of the supporting sleeve is staggered with the joint of the first lug and the second lug, the supporting sleeve supports the sealing ring at the joint of the first lug and the second lug, and the expansion of the sealing ring into the gap at the joint of the first lug and the second lug is prevented, thereby prolonging the service life of the sealing ring and ensuring the sealing effect.

[0029] Meanwhile, the supporting sleeve is in the form of an open ring, and the opening of the open ring provides a deformation space for the supporting sleeve when the first tile body and the second tile body are connected and locked. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 FIG. 1 is a schematic view of a pipe joint according to the utility model;

[0031] Figure 2 FIG. 2 is a cross-sectional view of the pipe joint; Figure 1

[0032] FIG. 3 is a schematic view of the supporting sleeve and the sealing ring from another angle; Figure 3 Figure 2 FIG. 4 is an exploded view of the pipe joint;

[0033] Figure 4 Figure 3 FIG. 5 is a schematic view of the pipe joint from another angle;

[0034] Figure 5 FIG. 6 is a schematic view of the pipe joint from another angle; Figure 2

[0035] FIG. 7 is a schematic view of the pipe joint from another angle; Figure 6

[0036] FIG. 8 is a schematic view of the pipe joint from another angle; Figure 7

[0037] FIG. 9 is a schematic view of the pipe joint from another angle; Figure 8 Figure 1 ​​​​

[0038] Figure 9 for Figure 8 schematic view after removing the support sleeve;

[0039] Figure 10 for the cross-sectional view of the first tile body and the second tile body in the locked state;

[0040] Figure 11 for Figure 10 schematic view after installing the support sleeve;

[0041] Figure 12 for Figure 11 schematic view after installing the sealing ring;

[0042] Figure 13 for Figure 12 exploded view of the pipe joint;

[0043] Figure 14 for Figure 12 another exploded view of the pipe joint;

[0044] Figure 15 for the schematic view of the pipeline connection structure of the embodiment of the utility model;

[0045] Figure 16 for Figure 15 exploded view of the pipeline connection structure;

[0046] Figure 17 for Figure 15 cross-sectional view of the pipeline connection structure. DETAILED DESCRIPTION

[0047] The utility model will be described in further detail below in combination with the embodiment of the drawings.

[0048] Referring to Figures 1 to 14 , it is the preferred embodiment of the pipe joint of the utility model. The pipe joint comprises a first tile body 1, a second tile body 2, a sealing ring 3, a support sleeve 4 and the like main components.

[0049] Among them, the first tile body 1 inner wall has the first arc slot 11, and the first tile body 1 has the first lug 12.

[0050] The second tile body 2 is connected in butt joint with the first tile body 1, and the second tile body 2 inner wall has the second arc slot 21 spliced into the annular groove 10 with the first arc slot 11, and the second tile body 2 has the second lug 22 connected with the first lug 12.

[0051] The sealing ring 3 is annular and is arranged in the annular groove 10.

[0052] Referring to Figures 3 to 14The support sleeve 4 is arranged between the sealing ring 3 and the groove wall of the annular groove 10, and is sleeved on the outer wall of the sealing ring 3 and attached to the outer wall of the sealing ring 3. The support sleeve 4 is an open annular structure extending along the circumference of the sealing ring 3. The opening 4e of the support sleeve 4 is offset from the joint of the first lug 12 and the second lug 22 (see Figure 11 、 Figure 13 ). The gap X of the first lug 12 and the second lug 22 at the joint is shown in Figure 8 、 Figure 9 , Figure 9 . The sealing ring 3 lacks support at the gap X, Figure 8 . The support sleeve 4 supports the sealing ring 3 and prevents the sealing ring 3 from expanding to the gap X. Preferably, the gap of the opening 4e ( Figure 7 ) is small (the smaller the better) when the first lug 12 and the second lug 22 are locked. The strength of the support sleeve 4 is greater than that of the sealing ring 3. For example, the support sleeve 4 is made of zinc steel sheet with a wall thickness of 0.2-0.3 mm, and the sealing ring 3 is made of rubber material. The material of the support sleeve 4 is adjusted as needed to meet the strength requirements of supporting the sealing ring 3 and the fluid acting on the sealing ring 3.

[0053] The support sleeve 4 can have two different structures: first, the support sleeve 4 is an integral part and has an open annular structure that matches the shape of the outer wall of the sealing ring 3, which is beneficial to reduce the installation process; second, the support sleeve 4 is cut into two parts along the radial direction, preferably cut in half, which is convenient for manufacturing and installation. When installed, the two parts are connected to form a whole.

[0054] The second embodiment of the support sleeve 4 will be described in detail below. Referring to Figure 6 、 Figure 7 , the support sleeve 4 includes a first support sleeve 41 and a second support sleeve 42. The first support sleeve 41 is an open annular structure, and the second support sleeve 42 is also an open annular structure and is axially spaced from the first support sleeve 41 (axially connected, and the smaller the gap at the joint, the better, and preferably the first support sleeve 41 and the second support sleeve 42 abut in the axial direction). The opening of the first support sleeve 41 is denoted as a first opening 411, and the opening of the second support sleeve 42 is denoted as a second opening 421. The first opening 411 and the second opening 421 are offset from the joint of the first lug 12 and the second lug 22. The support sleeve 4 is preferably axially evenly split into the first support sleeve 41 and the second support sleeve 42. Here, evenly split means substantially evenly split, allowing for some error. At this time, the positions of the first opening 411 and the second opening 421 can be axially aligned or offset. In other embodiments, the proportion of the support sleeve 4 split axially can be adjusted as needed. For example, the support sleeve 4 can be split axially into four-six parts or three-seven parts, so that the sizes of the first support sleeve 41 and the second support sleeve 42 are different.

[0055] The shapes of the sealing ring 3 and the support sleeve 4 are specifically that the sealing ring 3 comprises a ring body 31 and a lip 32, the lip 32 has two and is connected with the corresponding edges of the ring body 31 in the axial direction, the end of the lip 32 connected with the ring body 31 is recorded as a fixed end, and the other end is a free end 321 Figure 3 , Figure 4 ,the free end 321 extends out of the support sleeve 4. Referring to Figure 3 , Figure 4 , the support sleeve 4 comprises a first section 4a and a second section 4b, the first section 4a is attached to the outer wall of the ring body 31, the second section 4b has two and is connected with the corresponding edges of the first section 4a in the axial direction, and each second section 4b is attached to the outer wall of the corresponding lip 32. In the embodiment, the first section 4a is a split part and is divided into a left half section 4c and a right half section 4d, the left half section 4c is connected with the left second section 4b to form a first support sleeve 41, and the right half section 4d is connected with the right second section 4b to form a second support sleeve 41. Figure 3

[0056] Referring to Figures 15 to 17 , the preferred embodiment of the pipeline connecting structure of the utility model comprises the above-mentioned pipe joint, the first pipe 100 and the second pipe 200 which are axially inserted into the sealing ring 3, the outer wall of the first pipe 100 and the second pipe 200 has a ring-shaped limiting rib 100a, and the inner wall of the first tile body 1 and the second tile body 2 has a limiting groove 1a for embedding the limiting rib 100a, so that after the pipe joint is locked, the pipe joint, the first pipe 100 and the second pipe 200 cannot be separated in the axial direction. The gasket 20 is arranged outside the first lug 12 and the second lug 22, and after the first lug 12 and the second lug 22 are locked by the bolt 30, the sealing ring 3 seals and butt joints the first pipe 100 and the second pipe 200.

[0057] The working principle and the use method are as follows:

[0058] Referring to Figure 17 , the sealing ring 3 is sleeved on the end of the first pipe 100 and the end of the second pipe 200, the first support sleeve 41 and the second support sleeve 42 are sleeved on the sealing ring 3, the ring-shaped groove 10 of the first tile body 1 and the second tile body 2 is aligned with the first support sleeve 41 and the second support sleeve 42, the first opening 411 of the first support sleeve 41 and the second opening 421 of the second support sleeve 42 are all staggered with the butt joint positions of the first lug 12 and the second lug 22, the first lug 12 and the second lug 22 are connected and locked by the bolt 30, so that the sealing ring 3 seals and butt joints the first pipe 100 and the second pipe 200, the support sleeve 4 supports the sealing ring 3 at the butt joint positions of the first lug 12 and the second lug 22, the sealing ring 3 cannot expand to the gap X at the butt joint positions of the first lug 12 and the second lug 22, which is beneficial to improve the service life of the sealing ring 3 and ensure the sealing effect.

Claims

1. A pipe joint, characterized by: The utility model relates to a sealing structure of pipe joint The first tile type body (1) has a first lug (12); The second tile type body (2) is connected with the first tile type body (1) in butt joint, and the inner wall of the second tile type body (2) has a second arc-shaped groove (21) that is spliced into an annular groove (10) with the first arc-shaped groove (11); the second tile type body (2) has a second lug (22) connected with the first lug (12); The sealing ring (3) is annular and arranged in the annular groove (10); The utility model is characterized in that: The support sleeve (4) is arranged between the sealing ring (3) and the groove wall of the annular groove (10), the support sleeve (4) is sleeved outside the sealing ring (3) and is attached to the outer wall of the sealing ring (3), the support sleeve (4) is an open annular extending along the circumference of the sealing ring (3), and the opening (4e) of the support sleeve (4) is staggered with the butt joint of the first lug (12) and the second lug (22).

2. The pipe joint of claim 1, wherein: The support sleeve (4) comprises a first support sleeve (41) in an open annular shape and a second support sleeve (42) in an open annular shape and axially spaced apart from the first support sleeve (41); The opening of the first support sleeve (41) is a first opening (411), the opening of the second support sleeve (42) is a second opening (421), and the first opening (411) and the second opening (421) are staggered with the butt joint of the first lug (12) and the second lug (22).

3. The pipe joint of claim 2, wherein: The first opening (411) and the second opening (421) are axially aligned.

4. The pipe joint of claim 2, wherein: The first support sleeve (41) and the second support sleeve (42) abut in the axial direction.

5. The pipe joint of claim 2, wherein: The support sleeve (4) is axially equally split to form the first support sleeve (41) and the second support sleeve (42).

6. The pipe joint of claim 1, wherein: The strength of the support sleeve (4) is greater than that of the sealing ring (3).

7. The pipe joint of claim 1, wherein: The sealing ring (3) comprises A ring body (31); Two lips (32) are connected to the corresponding edges of the ring body (31) in the axial direction; The support sleeve (4) comprises A first section (4a) attached to the outer wall of the ring body (31); Two second sections (4b) are connected to the corresponding edges of the first section (4a) in the axial direction, and each second section (4b) is attached to the outer wall of the corresponding lip (32).

8. The pipe joint of claim 7, wherein: One end of the lip (32) connected to the ring body (31) is a fixed end, and the other end is a free end (321), and the free end (321) extends out of the support sleeve (4).

9. A pipe connection structure characterized by comprising: The utility model relates to a sealing structure of pipe joint 10. The pipe connection structure according to claim 9, characterized by: The utility model further comprises a first pipe (100) and a second pipe (200) axially inserted into the sealing ring (3), and the sealing ring (3) seals and butt joints the first pipe (100) and the second pipe (200) in the locking state of the first lug (12) and the second lug (22).

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