Hoop connecting piece and pipeline system

Abstract

The invention relates to a hoop connecting piece and a pipeline system, the hoop connecting piece comprises a semicircular first connecting body and a semicircular second connecting body, the inner ring surface of the first connecting body and the inner ring surface of the second connecting body are provided with sealing ring bins, the two ends of the first connecting body and the two ends of the second connecting body are provided with bolt seats, and the bolt seats are provided with fixing holes. Limiting seats are arranged at the outer ends of the butt joint faces of the bolt seats of the first connecting body and the second connecting body so that the limiting seats of the corresponding bolt seats can make contact with each other after the first connecting body and the second connecting body are matched. By means of the clamp connecting piece, the phenomenon that the bolt seats are broken when nuts are screwed down is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline accessories, and in particular to a clamp connector and a pipeline system. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] At present, the main connection methods of pipeline systems are flange connection, welding, threaded connection, and groove connection, among which groove connection is widely used. The pipe ends of grooved connection are generally grooved by rollers or grooves, and sealing rings are put on the adjacent pipe ends. The clamp connector is wrapped around the outside of the sealing ring, and the bayonet convex circle in the clamp connector is inserted into the groove. The nuts at both ends of the clamp connector are tightened evenly and crosswise to connect the adjacent pipe ends.

[0004] In actual applications, it is found that when tightening the nuts at both ends of the clamp connector with an electric wrench, due to the large torque of the electric wrench, the nut at one end is often fully tightened before tightening the nut at the other end, instead of tightening the nuts at both ends evenly in turn, resulting in the clamp connector breaking at the bolt seat due to excessive or uneven force. Moreover, when installing the pipe clamp connector, it is necessary to remove the bolts and nuts on both sides, then put them on the pipe, and then install the bolts and nuts on both sides, making the installation process complicated. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a clamp connector and a pipeline system, wherein the clamp connector is easy to install and the phenomenon of bolt seat breakage is avoided.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the present invention provides a clamp connector, comprising a semicircular first connector and a second connector, the inner ring surfaces of the first connector and the second connector are provided with a sealing ring chamber, both ends of the first connector and the second connector are provided with a bolt seat, the bolt seat is provided with a fixing hole, and the outer ends of the mating surfaces of the bolt seats of the first connector and the second connector are provided with a limit seat so that the limit seats of the corresponding bolt seats contact each other after the first connector and the second connector are matched.

[0008] Optionally, the fixing holes of the first connector and the second connector are both elliptical conical holes, and the cross-section of the fixing hole perpendicular to the axis thereof is elliptical.

[0009] Optionally, the end area of ​​the fixing hole extending to the docking surface is larger than the end area of ​​the other end, and the angle between the outer part of the fixing hole surface and the axis of the fixing hole is larger than a set value so that when the fixing holes on one side of the first connector and the second connector are bolted, the other ends of the first connector and the second connector can open at a set angle to be sleeved on the outer circumference of the pipe.

[0010] Optionally, the end face of the mating end of the limit seat is a plane, and the plane is perpendicular to the axis of the fixing hole or forms a set acute angle with the axis of the fixing hole;

[0011] Optionally, the end surface of the mating end of the limit seat is a sawtooth structure, having a plurality of saw teeth and tooth grooves arranged alternately, and the top tooth surface of the saw teeth is a butt joint surface;

[0012] Optionally, the mating end surface of the limit seat is a serrated structure having a plurality of saw teeth and tooth grooves arranged alternately, and the saw teeth of one limit seat can be inserted into the tooth groove of the other limit seat in the two mating limit seats.

[0013] Optionally, the top surface of the bolt seat facing the side of the docking surface is provided with an anti-slip structure.

[0014] Optionally, the anti-slip structure adopts a plurality of truncated cone-shaped protrusions disposed on the surface of the bolt seat and arranged in an array;

[0015] or;

[0016] The anti-slip structure is a plurality of strip-shaped protrusions distributed in a mesh shape.

[0017] or;

[0018] The anti-slip structure is a plurality of strip-shaped protrusions arranged in parallel.

[0019] Optionally, two ends of the sealing ring bin have a flared structure.

[0020] In a second aspect, an embodiment of the present invention provides a pipeline system, including a plurality of pipelines, wherein the clamp connectors described in the first aspect are provided between pipe ends of adjacent pipelines.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the clamp connector of the present invention, a limit seat is provided at the outer end of the butt surface of the bolt seat. After the first connector and the second connector are matched, when the nut is tightened to a certain extent, the corresponding limit seats come into contact, which plays a role of limiting support for the bolt seat. The bolt seat is no longer subjected to a large bending moment, which avoids the breakage caused by the sudden increase in force on the bolt seat when the wrench torque is too large or the bolt seat is unevenly stressed, avoids the damage of the clamp connector caused by excessive torque during installation, and ensures the smooth installation of the pipeline and the clamp connector.

[0023] 2. In the clamp connector of the present invention, the end area of ​​the fixing hole extending to the butt surface is larger than the end area of ​​the other end, and the angle between the outer part of the fixing hole surface and the axis of the fixing hole is larger than a set value so that when the fixing holes on one side of the first connector and the second connector are bolted, the other ends of the first connector and the second connector can be opened at a set angle to fit into the outer periphery of the pipe. During installation, it is only necessary to remove the bolts and nuts on one side, loosen the nuts on the other side, and open the first connector and the second connector to achieve installation. The installation process is more convenient and the construction efficiency is improved.

[0024] 3. In the clamp connector of the present invention, a flared structure is provided at the end of the sealing ring compartment to increase the space for accommodating the sealing ring and prevent the sealing ring from being damaged due to squeezing the sealing ring during improper installation.

[0025] 4. In the clamp connector of the present invention, the top surface of the bolt seat on the side of the docking surface is provided with an anti-slip structure, and the head of the bolt and the nut cooperate with the anti-slip structure to increase friction, prevent the nut from loosening, reduce the installation torque, and facilitate installation while avoiding breakage of the bolt seat. The anti-slip structure is also beneficial to the transmission of vibration and reduces vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 2 This is a front view of the overall structure of Example 1 of the present invention;

[0029] Figure 3 The side view of the limit seat of embodiment 1 of the present invention Figure 1 ;

[0030] Figure 4 The side view of the limit seat of embodiment 1 of the present invention Figure 2 ;

[0031] Figure 5 The side view of the limit seat of embodiment 1 of the present invention Figure 3 ;

[0032] Figure 6 The side view of the limit seat of embodiment 1 of the present invention Figure 4 ;

[0033] Figure 7 is a cross-sectional view of a first connecting body of Embodiment 1 of the present invention;

[0034] Figure 8 This is a schematic diagram of the use of embodiment 1 of the present invention;

[0035] Fig. 9 The anti-slip structure of Example 1 of the present invention is viewed from above Figure 1 ;

[0036] Fig.10 The anti-slip structure of Example 1 of the present invention is viewed from above Figure 2 ;

[0037] Fig.11 The anti-slip structure of Example 1 of the present invention is viewed from above Figure 3 ;

[0038] Among them, 1. a first connector, 2. a second connector, 3. a semicircular annular boss, 4. a bolt seat, 5. a docking surface, 6. a sealing ring compartment, 7. a fixing hole, 8. an insert, 9. a limit seat, 10. a nut, 11. a bolt, 12. an anti-slip structure, and 13. a flaring structure. DETAILED DESCRIPTION

[0039] Example 1

[0040] This embodiment provides a clamp connector, such as Figure 1-Figure 2 As shown, it includes a semicircular first connector 1 and a second connector 2. The first connector 1 and the second connector 2 can form a circular ring structure matching the pipeline after being matched. Along the axial direction of the first connector 1 and the second connector 2, both ends of the inner ring surface of the first connector 1 and the second connector 2 are provided with semicircular ring bosses 3 for being inserted into the grooves at the ends of the pipeline. Both ends of the first connector 1 and the second connector 2 along the annular direction are provided with bolt seats 4. One side of the stud seat 4 is a docking surface 5. The docking surface 5 is an inclined surface. After the first connector 1 and the second connector 2 are assembled, along the direction of the first connector 1 and the second connector 2 from the center of the circle outward, the two docking surfaces 5 that are docked with each other are inclined in a direction away from each other. The inner ring surfaces of the first connector 1 and the second connector 2 are both provided with sealing ring chambers 6 for forming a space for accommodating sealing rings. The bolt seat 4 is provided with a fixing hole 7, and the fixing hole 7 is used to pass the bolt 11 to achieve the assembly and fixation of the first connector 1 and the second connector 2. One end of the first connector 1 is provided with an insert block 8 and the other end is provided with a slot. One end of the second connector 2 is provided with an insert block 8 and the other end is provided with a slot. When the first connector 1 and the second connector 2 are assembled, the insert block is inserted into the slot to facilitate positioning and assembly of the first connector 1 and the second connector 2.

[0041] The above-mentioned structural form can adopt the structural form of the current clamp connector. In this embodiment, improvements are made on the basis of the current clamp connector structure.

[0042] The outer ends of the butt joint surfaces of the two bolt seats of the first connector 1 and the second connector 2 are provided with a limit seat 9. After the first connector 1 and the second connector 2 are assembled, the limit seats 9 of the corresponding bolt seats 4 contact each other. The limit seat is made of a rigid material. In this embodiment, the limit seat is made of the same material as the first connector 1 and the second connector 2, and is integrally formed with the first connector 1 and the second connector 2.

[0043] With this arrangement, the limit seat 9 plays a limiting and supporting role on the bolt seat 4 after contact. During the tightening process of the nut 10, the bolt seat 4 is no longer subjected to a large bending moment, thereby avoiding the breakage caused by the sudden increase in force on the bolt seat 4 when the wrench torque is too large, avoiding damage to the clamp connector caused by excessive torque during installation, and ensuring the smooth installation of the pipeline and the clamp connector.

[0044] One end of the limit seat 9 is fixed to the outer end of the bolt seat 4, and the other end surface serves as a docking surface that cooperates with the corresponding limit seat.

[0045] In one embodiment, Figure 3 As shown, the butt joint surface of the limit seat 4 is a plane, preferably a rectangular plane. The plane is perpendicular to the axis of the fixing hole or the plane and the axis of the fixing hole are set at a set acute angle, which can be selected by those skilled in the art according to actual needs.

[0046] In another embodiment, if Figure 4 As shown, the docking surface of the limit seat 4 is provided with a sawtooth structure, including a plurality of saw teeth and tooth grooves arranged alternately, and the top tooth surface of the saw teeth serves as the docking surface.

[0047] In a third embodiment, if Figure 5 As shown, the docking surface of the limit seat 4 is provided with a serrated structure, including a plurality of saw teeth and tooth grooves arranged alternately. When the two limit seats are docked, the saw teeth of one of the limit seats are inserted into the tooth grooves of the other limit seats. In this embodiment, the saw teeth adopt a right-angled trapezoidal structure, and correspondingly, the tooth grooves also adopt a right-angled trapezoidal structure.

[0048] In a fourth embodiment, if Figure 6 As shown, the docking surface of the limit seat 4 is provided with a serrated structure, including a plurality of saw teeth and tooth grooves arranged alternately. When two limit seats are docked, the saw teeth of one limit seat are inserted into the tooth grooves of the other limit seat. In this embodiment, the saw teeth adopt a triangular structure, and correspondingly, the tooth grooves also adopt a triangular structure.

[0049] One end surface of the bolt seat 4 is a butt joint surface, and the other end surface is a top surface for contacting the head of the bolt 11 or the nut 10 .

[0050] like Figure 7As shown, a fixing hole 7 is provided on the bolt seat 4 for the bolt to pass through. In this embodiment, the cross-section of the fixing hole 7 perpendicular to its axis is elliptical, and the fixing hole 7 is a tapered hole, and the end area extending to the top surface is smaller than the end area extending to the docking surface, that is, along the direction from the docking surface to the top surface, the cross-sectional area of ​​the fixing hole 7 on the cross-section perpendicular to its axis gradually decreases.

[0051] The cross-sectional dimension of the fixing hole 7 is slightly larger than the dimension of the shank of the bolt. The shank of the bolt includes a head connected to the shank. The shank includes a portion with an elliptical cross-section for passing through the fixing hole. A portion with a circular cross-section is provided at the end of the elliptical portion. The portion is provided with an external thread structure for tightening the nut.

[0052] The angle a between the outer portion of the fixing hole 7 and the axis of the fixing hole is greater than a set value, so that when the fixing holes on one side of the first connector 1 and the second connector 2 are bolted, the other ends of the first connector 1 and the second connector 2 can open at a set angle to fit around the outer circumference of the pipe.

[0053] Correspondingly, the outer side surface of the limit seat 9 is arranged parallel to the axis of the first connector and the second connector, and the thickness of the butt end of the limit seat 9 is less than the thickness of the other end. There is also a set angle b between the inner side surface of the limit seat 9 and the axis of the fixing hole 7. The degree of the angle b is greater than the degree of the angle a.

[0054] In this embodiment, the set value is 5°, and the angle a between the outer portion of the hole surface of the fixing hole 7 and the axis of the fixing hole 7 can be set according to actual needs, which will not be described in detail here.

[0055] With this setting, Figure 8 As shown, when installing the clamp connector, you only need to remove the bolts 11 and nuts 10 on one side, loosen the nut 10 on the other side, open the first connector 1 and the second connector 2, and put them on the outer periphery of the pipe end. After the first connector 1 and the second connector 2 are in place, close the opened ends of the first connector 1 and the second connector 2, and then use a wrench to tighten the nut 10 on one side, and then install the bolts 11 and nuts 10 on the other side, and then tighten the nut 10 with a wrench to achieve the installation of the clamp connector. The installation process is more convenient and the construction efficiency is improved.

[0056] The top surface of the bolt seat is provided with an anti-slip structure 12.

[0057] In one embodiment, Fig. 9 As shown, the anti-slip structure 12 comprises a plurality of truncated cone-shaped protrusions distributed in an array.

[0058] In another embodiment, if Fig.10As shown, the anti-slip structure 12 is composed of a plurality of parallel strip-shaped protrusions.

[0059] In a third embodiment, if Fig.11 As shown, the anti-slip structure 12 is composed of a plurality of strip-shaped protrusions distributed in a mesh shape.

[0060] It is understandable that other structural forms of anti-slip structures may also be used, and those skilled in the art may configure them according to actual needs, which will not be described in detail here.

[0061] By providing the anti-slip structure 12, the friction between the top surface of the bolt seat 4 and the head of the bolt 11 or the nut 10 can be increased, thereby preventing the nut 10 from loosening and reducing the installation torque. While facilitating installation, it also further avoids the phenomenon of the bolt seat breaking due to excessive torque. In addition, by providing the anti-slip structure, it is beneficial to the transmission of vibration and reduces vibration.

[0062] The inner annular surfaces of the first connector 1 and the second connector 2 are both provided with a semicircular sealing ring compartment 6 for accommodating the sealing ring. In the present embodiment, the two ends of the sealing ring compartment 6 are provided with a flaring structure 13 to form a trumpet-shaped structure that opens outwards, thereby increasing the space for accommodating the sealing ring. When the first connector 1 and the second connector 2 are assembled and extruded, the protruding portion of the sealing ring that is deformed due to extrusion at the junction of the first connector 1 and the second connector 2 has an accommodating space, thereby avoiding extrusion damage to the sealing ring due to improper installation.

[0063] When installing the clamp connector of this embodiment, first remove the bolts 11 and nuts 10 on one side, loosen the nuts 10 on the other side, open the first connector 1 and the second connector 2, and then put them on the outer periphery between the two adjacent pipe ends, close the first connector 1 and the second connector 2, and insert the semicircular annular boss 3 into the groove at the end of the pipe. The first connector 1 and the second connector 2 are put on the outer periphery of the sealing ring, and then tighten the nut 10 on one side with a wrench, install the bolts 11 and nuts 10 on the other side, and then tighten the nut 10 on the other side with a wrench. At this time, the installation of the clamp connector is completed.

[0064] Example 2

[0065] The present embodiment provides a pipeline system, comprising a plurality of pipelines arranged in sequence, wherein the pipelines are grooved pipelines, and a sealing ring is provided on the outer periphery between the ends of two adjacent pipelines, and a clamp connector of embodiment 1 is provided on the outer periphery of the sealing ring, and a semicircular annular boss 3 of the clamp connector is inserted into the groove at the end of the pipeline. The remaining structures of the pipeline system may adopt the existing technology and will not be described in detail herein.

[0066] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A clamp connector, comprising a semicircular first connector and a second connector, wherein the inner ring surfaces of the first connector and the second connector are provided with a sealing ring compartment, and both ends of the first connector and the second connector are provided with a bolt seat, and the bolt seat is provided with a fixing hole, wherein: The outer ends of the butt joint surfaces of the bolt seats of the first connecting body and the second connecting body are provided with limiting seats so that the limiting seats of the corresponding bolt seats can contact each other after the first connecting body and the second connecting body are matched.

2. A clamp connector according to claim 1, characterized in that: The fixing holes of the first connector and the second connector are both elliptical conical holes, and the cross-section of the fixing hole perpendicular to the axis thereof is elliptical.

3. A clamp connector according to claim 1, characterized in that: The end area of ​​the fixing hole extending to the docking surface is larger than the end area of ​​the other end, and the angle between the outer part of the fixing hole surface and the axis of the fixing hole is larger than a set value so that when the fixing holes on one side of the first connecting body and the second connecting body are bolted, the other ends of the first connecting body and the second connecting body can open at a set angle to be sleeved on the outer circumference of the pipe.

4. A clamp connector according to claim 1, characterized in that: The end surface of the matching end of the limiting seat is a plane, and the plane is perpendicular to the axis of the fixing hole or forms a set acute angle with the axis of the fixing hole.

5. A clamp connector according to claim 1, characterized in that: The end surface of the matching end of the limiting seat is a sawtooth structure, with a plurality of saw teeth and tooth grooves arranged alternately, and the top tooth surface of the saw teeth is a butt joint surface.

6. A clamp connector according to claim 1, characterized in that: The mating end surface of the limiting seat is a serrated structure with a plurality of saw teeth and tooth grooves arranged alternately, and the saw teeth of one limiting seat can be inserted into the tooth groove of the other limiting seat in the two mating limiting seats.

7. A clamp connector according to claim 1, characterized in that: The top surface of the bolt seat on the side of the butt joint is provided with an anti-slip structure.

8. A clamp connection according to claim 7, characterized in that: The anti-slip structure adopts a plurality of truncated cone-shaped protrusions arranged in an array on the surface of the bolt seat; or; The anti-slip structure is a plurality of strip-shaped protrusions distributed in a mesh shape. or; The anti-slip structure is a plurality of strip-shaped protrusions arranged in parallel.

9. A clamp connector according to claim 1, characterized in that: The two ends of the sealing ring bin have a flared structure.

10. A pipeline system comprising a plurality of pipelines, characterized in that: A clamp connector as claimed in any one of claims 1 to 9 is provided between pipe ends of adjacent pipes.

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