Hoop half-joint pipe clamp fastener

Abstract

This invention relates to pipe clamp fastening, specifically to a clamp-type half-section pipe clamp fastener, comprising two clamps arranged opposite each other, with adjacent ends of the two clamps connected by pre-tightening bolts. The clamps have through-holes on their surfaces. When the clamps are assembled with the pipe clamp, the pipe clamp connecting lug is located within the through-hole, and the side wall of the through-hole facing the pre-tightening bolt abuts against the end face of the connecting lug. The end of the clamp near the pre-tightening bolt extends along the circumferential direction of the pipe clamp and forms a radial contact fit with the circumferential wall of the pipe clamp, thus creating a limiting fit that restricts the separation of the two half-section halves of the pipe clamp. By clamping the pipe clamp with the clamps, the fastener ensures a tight seal between the pipe clamp and the pipeline under pressurized medium transport conditions, while also allowing for effective replacement of the pipe clamp bolts, achieving rapid reinforcement of the pipe clamp.

Description

Technical Field

[0001] This invention relates to pipe clamp fastening, specifically to a clamp-type pipe clamp fastener. Background Technology

[0002] Half-type pipe clamps, as sealing components, consist of two half-sections. After prolonged use, the pipe clamp bolts passing through the center hole of the clamp's connecting lugs are prone to corrosion and functional failure, posing a risk of clamp loosening. Therefore, replacement is necessary. However, considering that removing the pipe clamp bolts will inevitably cause the clamp to loosen and lead to leakage of the internal medium, the pipeline valves must be closed during operation. This will affect the normal transport of the internal medium. How to replace the pipe clamp bolts under pressure without stopping the medium transport becomes a challenge.

[0003] The technical solution disclosed in the patent document entitled "A Bolt Remover" (publication number CN201244801Y) consists of a remover body and a threaded push rod. The remover body is a U-shaped handle. One end of the remover body is an open wrench, and the other end of the remover body is provided with a threaded hole. The threaded push rod can be assembled in the threaded hole. The remover uses the working principle of a threaded jack. By rotating the threaded push rod, the bolt on the structure can be pushed out.

[0004] In the above technical solution, the only way to work is to push the pipe clamp bolt out of the bolt hole in the structure. For half-type pipe clamps, once the pipe clamp bolt is loosened, it cannot be guaranteed that the half-type pipe clamp can still be firmly maintained on the pipeline under pressure, which will cause the half-type pipe clamp to separate from the pipeline and cause the seal to fail, resulting in a large amount of media leakage. Summary of the Invention

[0005] This invention provides a clamp-type half-joint pipe clamp fastener that, under pressurized operation conditions without stopping media transport, ensures a tight seal between the pipe clamp and the pipeline while allowing for the replacement of the pipe clamp bolts, thereby strengthening the pipe clamp.

[0006] To achieve the above objectives, the technical solution adopted is as follows: a clamp-type pipe clamp fastener, comprising two clamps arranged opposite to each other, with one end of the two clamps connected by a pre-tightening bolt, and clearance holes through the plate surfaces of the two clamps. When the two clamps are assembled with the pipe clamp, the pipe clamp connecting lug is located in the clearance hole, and the side wall of the clearance hole facing the pre-tightening bolt abuts against the end face of the pipe clamp connecting lug. The end of the clamp near the pre-tightening bolt extends along the circumferential direction of the pipe clamp and forms a radial abutment fit with the circumferential wall of the pipe clamp.

[0007] Compared with the prior art, the technical effects of the present invention are as follows: the clamp is placed on the pipe clamp connecting lug, the side wall of the clearance hole on the clamp facing the pre-tightening bolt abuts against the end face of the pipe clamp connecting lug, and at the same time, the end of the clamp near the pre-tightening bolt forms a radial abutment fit with the peripheral wall of the pipe clamp, thereby forming a limiting fit that restricts the separation of the two half-sections of the pipe clamp. By using the clamp to clamp the pipe clamp, the pipe clamp and the pipeline are kept tightly sealed under the condition of pressurized medium transportation, while the pipe clamp bolts can be effectively replaced, realizing the rapid reinforcement of the pipe clamp. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the assembly state of the invention and the pipe clamp;

[0009] Figure 2 This is a schematic diagram showing the mounting position of the suspension end of the straight section;

[0010] Figure 3 This is a three-dimensional schematic diagram of the present invention;

[0011] Figure 4 This is a schematic diagram of the clamping plate structure;

[0012] Figure 5 This is an axial schematic diagram of the present invention and the pipe clamp assembly state. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-5 The present invention will be further described in detail below, including related content:

[0014] A clamp-type pipe clamp fastener includes two clamping plates 10 arranged opposite each other. The adjacent ends of the two clamping plates 10 are connected by a pre-tightening bolt 20. The plates 10 are provided with clearance holes 11 that pass through the plates. When the two clamping plates 10 are assembled with the pipe clamp A, the pipe clamp connecting ear A1 is located in the clearance hole 11, and the side wall of the clearance hole 11 facing the pre-tightening bolt 20 abuts against the end face of the pipe clamp connecting ear A1. The end section of the clamping plate 10 near the pre-tightening bolt 20 extends along the circumferential direction of the pipe clamp A and forms a radial abutment fit with the circumferential wall of the pipe clamp A.

[0015] In the above technical solution, the clearance hole 11 on the clamping plate 10 allows the pipe clamp connecting lug A1 on the pipe clamp A to pass through, thereby fitting the clamping plate 10 onto the pipe clamp connecting lug A1. The side wall of the clearance hole 11 facing the pre-tightening bolt 20 abuts against the adjacent side end face of the pipe clamp connecting lug A1. At the same time, the plate end section of the clamping plate 10 near the pre-tightening bolt 20 extends along the circumferential direction of the pipe clamp A and forms a radial abutment fit with the circumferential wall of the pipe clamp A, thereby forming a limiting fit that restricts the separation of the two half-sections of the pipe clamp A. By using the clamping plate 10 to clamp the pipe clamp A, a rapid reinforcement operation of the pipe clamp is achieved. Under the condition of pressurized medium transportation, the tight seal between the pipe clamp A and the pipeline is ensured, while facilitating the replacement of the pipe clamp bolt B.

[0016] It should be noted that the above technical solution can be used directly as a reinforcement for pipe clamp A without disassembling or when pipe clamp bolt B cannot be disassembled. This reinforcement is equivalent to a newly added pipe clamp bolt B. To prevent loosening between pipe clamp A and the pipe, clamp plate 10 is clamped onto pipe clamp A. Under the pre-tightening action of pre-tightening bolt 20, the separation of the two half-sections in pipe clamp A can be effectively restricted, ensuring the tightness between pipe clamp A and the pipe.

[0017] In addition, this solution considers tube clamp A as a whole. Tube clamp connecting ear A1 refers to the ears on both sides of tube clamp A as a whole, not just the ear of one half of the half-section.

[0018] As a preferred embodiment, the clamp 10 includes a straight section 10a, an avoidance hole 11 located on the straight section 10a, one end of the straight section 10a extending to form a curved section 10b, and the end of the curved section 10b away from the straight section 10a is provided with a connecting section 10c that extends toward the side away from the curvature center of the curved section 10b, and the connecting section 10c is provided with a through hole for the pre-tightening bolt 20 to pass through. When the two clamps 10 are assembled with the pipe clamp A, the curved section 10b is arranged along the circumferential direction of the pipe clamp A and forms a radial abutment fit with the circumferential wall of the pipe clamp A.

[0019] The straight section 10a has a clearance hole 11 for the pipe clamp connecting lug A1 to pass through. The curved section 10b abuts against the outer wall of the pipe clamp A to apply radial restraint force to the pipe clamp A, while the connecting section 10c provides a mounting position for the preload bolt 20. It should be noted that the curved section 10b is preferably a circular arc section. In use, a clamping plate 10 of appropriate size needs to be selected according to the diameter of the pipe clamp A to clamp and restrain the pipe clamp A.

[0020] Furthermore, in order to ensure that the clamp 10 can be properly fitted onto the pipe clamp connecting ear A1 without interfering with the pipe clamp bolt B, the clearance hole 11 extends from the straight section 10a to the curved section 10b. The diameter of the clearance hole 11 in the direction of extension from the straight section 10a to the curved section 10b is larger than the length of the pipe clamp bolt B on the pipe clamp connecting ear A1. Therefore, the clearance hole 11 is provided with a sufficiently large diameter to avoid the pipe clamp bolt B.

[0021] As a preferred embodiment, when the clamp 10 is assembled with the pipe clamp A, the straight section 10a is engaged at the transition connection between the pipe clamp connecting lug A1 and the arc-shaped section of the pipe clamp A. If the clamp 10 is used directly as a reinforcement to replace the pipe clamp bolt B, the bolt head B1 of the pipe clamp bolt B has a blocking and limiting effect on the straight section 10a of the clamp 10, which can prevent the end of the clamp 10 away from the pre-tightening bolt 20 from slipping off the pipe clamp connecting lug A1.

[0022] Furthermore, the distance between the bolt head B1 of pipe clamp bolt B and the adjacent end of the arc-shaped section of pipe clamp A is greater than the plate thickness of straight section 10a. This provides sufficient locking space for straight section 10a at the transition connection without axially pressing against the bolt head B1 of pipe clamp bolt B. Pipe clamp bolt B is located entirely outside the clamping plate 10, and the clamping plate 10 and pipe clamp bolt B are positioned to avoid each other. In this design, pipe clamp bolt B is located entirely outside the clamping plate 10, thus providing effective operating space for disassembling pipe clamp bolt B. The disassembly and assembly of pipe clamp bolt B will not interfere with the clamping plate 10, facilitating the replacement of pipe clamp bolt B.

[0023] It should be noted that the arc-shaped segment of pipe clamp A referred to here refers to the arc-shaped part of pipe clamp A, which is actually formed by the arc-shaped segments of the two half-sections.

[0024] Combination Figures 3-5 As shown, considering that when the pre-tightening bolt 20 applies pre-tightening force, the clamping plate 10 as a whole and the connection between the connecting section 10c and the curved section 10b are at risk of deformation and breakage, the straight section 10a and the curved section 10b are provided with reinforcing ribs 10d protruding outward from the plate surface and the reinforcing ribs 10d are connected to the connecting section 10c.

[0025] Additionally, it should be noted that, to facilitate the pre-tightening or disassembly of the pre-tightening bolt 20, the through hole on the connecting section 10c for the pre-tightening bolt 20 to pass through is a square hole. The pre-tightening bolt 20, near its head, has a square segment whose outer periphery matches the outline of the square hole. By utilizing the interaction between the square segment on the pre-tightening bolt 20 and the square hole on the connecting section 10c, the free rotation of the pre-tightening bolt 20 is restricted. The pre-tightening bolt 20 can be pre-tightened or disassembled by tightening the nut that mates with it.

Claims

1. A clamp-type pipe clamp fastener, characterized in that: The device includes two clamps (10) arranged opposite each other. The two clamps (10) are connected at their adjacent ends by a pre-tightening bolt (20). The clamps (10) have clearance holes (11) that pass through the plate surface. When the clamps (10) are assembled with the pipe clamp (A), the pipe clamp connecting ear (A1) is located in the clearance hole (11) and the side wall of the clearance hole (11) facing the pre-tightening bolt (20) abuts against the end face of the pipe clamp connecting ear (A1). The plate end section of the clamp (10) near the pre-tightening bolt (20) extends along the circumferential direction of the pipe clamp (A) and forms a radial abutment fit with the circumferential wall of the pipe clamp (A).

2. The clamp-on pipe clamp fastener according to claim 1, characterized in that: The clamp (10) includes a straight section (10a), a clearance hole (11) located on the straight section (10a), one end of the straight section (10a) extends to form a curved section (10b), and the end of the curved section (10b) away from the straight section (10a) is provided with a connecting section (10c) that extends toward the side away from the curvature center of the curved section (10b), and the connecting section (10c) is provided with a through hole for the pre-tightening bolt (20) to pass through. When the two clamps (10) are assembled with the pipe clamp (A), the curved section (10b) is arranged along the circumferential direction of the pipe clamp (A) and forms a radial abutment fit with the circumferential wall of the pipe clamp (A).

3. The clamp-on pipe clamp fastener according to claim 2, characterized in that: The clearance hole (11) extends from the straight section (10a) to the curved section (10b). The diameter of the clearance hole (11) in the direction of extension from the straight section (10a) to the curved section (10b) is greater than the length of the pipe clamp bolt (B) on the pipe clamp connecting lug (A1).

4. The clamp-on pipe clamp fastener according to claim 2, characterized in that: When the clamp (10) is assembled with the pipe clamp (A), the straight section (10a) is positioned at the transition connection between the pipe clamp connecting lug (A1) and the arc-shaped section of the pipe clamp (A).

5. The clamp-on pipe clamp fastener according to claim 4, characterized in that: The distance between the bolt head (B1) of the pipe clamp bolt (B) and the adjacent end of the arc segment of the pipe clamp (A) is greater than the plate thickness of the straight segment (10a). The pipe clamp bolt (B) is located on the outside of the clamp plate (10) and the clamp plate (10) and the pipe clamp bolt (B) are in a position of mutual avoidance.

6. The clamp-on pipe clamp fastener according to claim 2, characterized in that: The straight section (10a) and the curved section (10b) are provided with reinforcing ribs (10d) that protrude outward from the plate surface, and the reinforcing ribs (10d) are connected to the connecting section (10c).

7. The clamp-on pipe clamp fastener according to claim 2, characterized in that: The through hole on the connecting section (10c) for the pre-tightening bolt (20) to pass through is a square hole, and a square section with an outer periphery that matches the outline of the square hole is provided on the bolt body near its bolt head of the pre-tightening bolt (20).

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