A large-diameter heat preservation pipe end head clamping system

Abstract

This invention belongs to the field of insulation pipe clamping equipment, specifically relating to a large-diameter insulation pipe end clamping system, including a first clamp, a second clamp, and a set of centering components. The first clamp is sleeved on the insulation pipe on the fixed side, and the second clamp is sleeved on the insulation pipe on the side to be welded. The centering components include a traction rope, a first guide member, and a second guide member. The first guide member and the second guide member are respectively disposed on the first clamp and the second clamp to form a guiding fit. The traction rope includes a connecting end and a pulling end. The connecting end is connected to the second guide member, and the pulling end passes through the axial hole of the first guide member and is connected to a pulling unit. The second clamp has the freedom to move toward the first clamp by means of the pulling of the pulling end. This clamping system eliminates the centering method that relies entirely on manual fine-tuning of the radial position between the two insulation pipes, improves the centering efficiency, and achieves rapid and accurate centering of the ends of the two insulation pipes.

Description

Technical Field

[0001] This invention belongs to the field of insulation pipe clamping equipment, specifically relating to a large-diameter insulation pipe end clamping system. Background Technology

[0002] During the installation of insulated pipes, the alignment and positioning of the pipes largely relies on manual labor in conjunction with hoisting equipment. However, large-diameter insulated pipes are bulky and heavy, making them prone to swaying and misalignment during alignment. This necessitates repeated manual fine-tuning of the relative positions of the pipes and visual calibration of the alignment accuracy before finally fixing and welding them. This alignment method is not only time-consuming and labor-intensive, but also highly dependent on the operator's experience, making it difficult to control calibration accuracy and easily leading to excessive coaxiality deviations, thus reducing the welding quality between the insulated pipes. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a large-diameter insulation pipe end clamping system, which eliminates the centering method that relies entirely on manual fine-tuning of the radial position between the two insulation pipes, improves centering efficiency, and achieves rapid and accurate centering of the ends of the two insulation pipes.

[0004] The specific technical solution adopted in this invention is as follows:

[0005] A large-diameter insulated pipe end clamping system includes a first clamp and a second clamp. The first clamp is fitted onto the insulated pipe end on the fixed side, and the second clamp is fitted onto the insulated pipe end on the side to be welded. The clamping system also includes a centering assembly, which includes a traction rope, a first guide member, and a second guide member. The first guide member and the second guide member are respectively disposed on the first clamp and the second clamp and form a guiding fit. The traction rope includes a connecting end and a pulling end. The connecting end is connected to the second guide member, and the pulling end passes through the axial hole of the first guide member and is connected to a pulling unit. The second clamp has the freedom to move toward the first clamp by means of the pulling of the pulling end.

[0006] The ends of the first guide member and the second guide member are inserted into each other, the axial hole is coaxially arranged with the first guide member, and the connecting end is coaxially arranged with the second guide member.

[0007] The first guide component is a guide hole, and the second guide component is a guide rod with a cone head.

[0008] The second clamp is provided with a mounting bracket, which is provided with a stepped hole. The second guide is a T-shaped structure. The second guide and the stepped hole form an axial hook engagement. The stepped hole is provided with a notch along its radial direction and forms a U-shaped structure with the help of the notch. The notch forms a quick-installation channel for the second guide to enter and exit the stepped hole.

[0009] The mounting bracket is also provided with an anti-detachment groove, which includes a radial section and an axial section. The anti-detachment groove forms an L-shaped structure with the radial section and the axial section. The overhanging end of the radial section is open. The second guide is provided with an anti-detachment rod located at the end of the axial section. The side wall of the axial section is guided by the anti-detachment rod, and the end of the axial section faces the first guide.

[0010] The second clamp includes a main arc-shaped clamp and auxiliary arc-shaped clamps disposed on the left and right sides of the main arc-shaped clamp. The main arc-shaped clamp and the auxiliary arc-shaped clamps abut each other to form a ring. The second clamp has the same structure as the first clamp. Both the first clamp and the second clamp are provided with a locking mechanism.

[0011] The locking mechanism includes an electric push rod, a first cantilever, and a second cantilever. The first cantilever is fixed to the left and right ends of the main arc-shaped hoop, and the second cantilever is fixed to the auxiliary arc-shaped hoop. The mounting part of the electric push rod is hinged to the first cantilever via a first hinge shaft, and the telescopic end of the electric push rod is hinged to the second cantilever via a second hinge shaft. The first cantilever is hinged to the second cantilever via a third hinge shaft, which is located between the first and second hinge shafts.

[0012] The clamping system includes a pair of centering components, which are located on both sides of the insulation tube and on the same radial line of the insulation tube.

[0013] The beneficial effects of this invention are:

[0014] This invention employs a first clamp and a second clamp fixed to the ends of the insulation pipes, respectively. The first clamp and the second clamp are respectively equipped with a first guide member and a second guide member forming a guiding fit. The connecting end of the traction rope is connected to the second guide member, and the pulling end of the traction rope passes through the axial hole of the first guide member and connects to a pulling unit. The pulling unit pulls the traction rope, and the second clamp clamps the insulation pipe on the side to be welded, moving it together towards the insulation pipe on the fixed side. The first guide member and the second guide member form a guiding fit, achieving rapid and accurate alignment of the ends of the two insulation pipes, reducing radial deviation between the two insulation pipes, and helping to improve the welding quality between the insulation pipes.

[0015] This clamping system eliminates the need for manual fine-tuning of the radial position between two insulation pipes, improving the efficiency of assembling insulation pipes. It offers precise positioning and a simple structure, making it particularly suitable for misalignment of large-diameter insulation pipes during hoisting and placement operations.

[0016] The cooperation of the anti-detachment groove and the anti-detachment rod restricts the radial movement of the second guide component and the mounting bracket, compensating for the radial limiting gap caused by the notch. While retaining the function of quick assembly and disassembly, it greatly reduces the risk of the second guide component falling off the mounting bracket. On the other hand, the contact between the anti-detachment groove and the anti-detachment rod also increases the contact area between the second guide component and the mounting bracket, further improving the stability of the traction operation. The setting of the anti-detachment groove and the anti-detachment rod reduces the restriction on the opening direction of the notch and improves the layout flexibility of the stepped hole on the second clamp. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram illustrating the application state of the present invention;

[0019] Figure 3 This is a schematic diagram showing the second clamp in its closed state;

[0020] Figure 4 This is a schematic diagram showing the second clamp in the open position.

[0021] Figure 5 for Figure 1 A magnified view of part A;

[0022] In the attached diagram, 1 is the first clamp, 2 is the second clamp, 3 is the insulation pipe, 4 is the traction rope, 401 is the connecting end, 402 is the pulling end, 5 is the first guide, 6 is the second guide, 7 is the mounting bracket, 701 is the stepped hole, 702 is the notch, 8 is the anti-detachment groove, 801 is the radial section, 802 is the axial section, 9 is the anti-detachment rod, 10 is the main arc-shaped clamp, 11 is the secondary arc-shaped clamp, 12 is the locking mechanism, 1201 is the electric push rod, 1202 is the first cantilever, 1203 is the second cantilever, 1204 is the first hinge shaft, 1205 is the second hinge shaft, and 1206 is the third hinge shaft. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0024] Specific implementation examples Figure 1 , Figure 2As shown, this invention relates to a large-diameter insulation pipe end clamping system, including a first clamp 1 and a second clamp 2. The first clamp 1 is fitted onto the end of the insulation pipe 3 on the fixed side, and the second clamp 2 is fitted onto the end of the insulation pipe 3 on the side to be welded. The insulation pipe 3 on the fixed side is the already installed and fixed insulation pipe, while the insulation pipe 3 on the side to be welded is the insulation pipe that will be aligned and welded with the insulation pipe 3 on the fixed side. The clamping system also includes a centering assembly, which includes a traction rope 4, a first guide 5, and a second guide 6. The first guide 5 and the second guide 6 are respectively disposed on the first clamp 1 and the second clamp 2 to form a guiding fit. The traction rope 4 includes a connecting end 401 and a pulling end 402. The connecting end 401 is connected to the second guide 6, and the pulling end 402 passes through the axial hole of the first guide 5 and is connected to a pulling unit. The second clamp 2 has the freedom to move toward the first clamp 1 by means of the pulling of the pulling end 402.

[0025] During operation, the first clamp 1 and the second clamp 2 are respectively installed on the ends of the two insulation pipes 3. The pulling unit pulls the traction rope 4, and the second clamp 2 clamps the insulation pipe 3 on the side to be welded and moves it together towards the insulation pipe 3 on the fixed side. The first guide 5 and the second guide 6 form a guiding fit. The first clamp 1 and the second clamp 2 are respectively coaxially set with the insulation pipe 3 on which they are located. Therefore, the ends of the two insulation pipes 3 can be quickly and accurately aligned by pulling the traction rope 4 and guiding the first guide 5 and the second guide 6, reducing the radial deviation between the two insulation pipes 3 and helping to improve the welding quality between the insulation pipes 3. The preferred pulling unit is an anchor cable tensioning device or a telescopic cylinder. A guide limiting tube located behind the first guide member 5 is fixed on the first clamp 1. The guide limiting tube guides the pulling direction of the traction rope 4. The pulling unit generates an axial tension on the traction rope 4, making the traction rope 4 taut. During the tautness of the traction rope 4, it generates a tension on the second clamp 2, helping the second clamp 2 and the insulation pipe 3 clamped by the second clamp 2 to move in the direction of the first clamp 1.

[0026] This clamping system eliminates the need for manual fine-tuning of the radial position between the two insulation pipes 3, improving the efficiency of assembling the insulation pipes 3. It is precise in positioning and simple in structure, and is especially suitable for misalignment of large-diameter insulation pipes 3 during hoisting and placement operations.

[0027] The ends of the first guide member 5 and the second guide member 6 are interlocked, the axial hole is coaxial with the first guide member 5, and the connecting end 401 is coaxial with the second guide member 6, which helps to reduce the wear of the traction rope 4 during the traction process.

[0028] The first guide member 5 is a guide hole, and the second guide member 6 is a guide rod with a cone head. Before forming the guide fit, the cone head of the guide rod is inserted into the guide hole first. The coaxiality between the two insulation tubes 3 is gradually corrected with the help of the cone head, and finally the centering is achieved.

[0029] Furthermore, the second clamp 2 is equipped with a mounting bracket 7, such as... Figure 5 As shown, the mounting bracket 7 is provided with a stepped hole 701. The cross-section of the second guide member 6 is a T-shaped structure, that is, the end of the guide rod is provided with a protruding edge. The guide rod is fitted with the small diameter hole of the stepped hole 701, and the protruding edge on the guide rod is fitted with the large diameter hole of the stepped hole 701. The protruding edge abuts against the bottom of the large diameter hole of the stepped hole 701, so that the second guide member 6 and the stepped hole 701 form an axial hook engagement. When the traction rope 4 is pulled, the protruding edge transmits the traction force of the traction rope 4 to the bottom of the large diameter hole of the stepped hole 701, thereby pulling the insulation pipe 3 on the side to be welded to move towards the insulation pipe 3 on the fixed side. Moreover, the protruding edge and the stepped hole 701 are in surface contact, the force on the second clamp 2 is more stable, and the second clamp 2 and the second guide member 6 can withstand a large interaction force.

[0030] A notch 702 is provided radially on the stepped hole 701, and a U-shaped structure is formed by the notch 702. The notch 702 forms a quick-installation channel for the second guide 6 to enter and exit the stepped hole 701. The second guide 6 can enter and exit the stepped hole 701 along the notch 702, which facilitates the quick assembly and disassembly of the second guide 6 and the mounting bracket 7.

[0031] To improve the connection stability between the second guide member 6 and the mounting bracket 7 during operation, the mounting bracket 7 is also provided with an anti-detachment groove 8, such as... Figure 5 As shown, the anti-detachment groove 8 includes a radial section 801 and an axial section 802. The anti-detachment groove 8 forms an L-shaped structure with the radial section 801 and the axial section 802. The overhanging end of the radial section 801 is open. The second guide member 6 is provided with an anti-detachment rod 9 located at the end of the axial section 802. The side wall of the axial section 802 is guided by the anti-detachment rod 9. The end of the axial section 802 faces the first guide member 5. During installation, the second guide member 6 is positioned at the opening of the notch 702, and the anti-detachment rod 9 is positioned... Aligning with the radial section 801, the second guide 6 is moved along the notch 702 to enter the stepped hole 701, and the anti-detachment rod 9 is moved to the bottom of the radial section 801. At this time, the protruding edge of the second guide 6 extends out of the stepped hole 701. The second guide 6 is moved forward along the axial direction of the stepped hole 701, and the anti-detachment rod 9 enters the axial section 802. When the anti-detachment rod 9 abuts against the end of the axial section 802, the protruding edge on the second guide 6 abuts against the bottom of the large diameter hole of the stepped hole 701.

[0032] The cooperation between the anti-detachment groove 8 and the anti-detachment rod 9 can limit the radial movement of the second guide 6 and the mounting bracket 7, making up for the radial limiting gap caused by the opening 702. While retaining the function of quick disassembly and assembly, it greatly reduces the risk of the second guide 6 falling off the mounting bracket 7. On the other hand, the contact between the anti-detachment groove 8 and the anti-detachment rod 9 also increases the contact area between the second guide 6 and the mounting bracket 7, further improving the stability of the traction operation.

[0033] The second clamp 2 includes a main arc-shaped clamp 10 and auxiliary arc-shaped clamps 11 disposed on the left and right sides of the main arc-shaped clamp 10. The main arc-shaped clamp 10 and the auxiliary arc-shaped clamps 11 abut each other to form a ring. The second clamp 2 has the same structure as the first clamp 1. Both the first clamp 1 and the second clamp 2 are provided with locking mechanisms 12. The main arc-shaped clamp 10 and the two auxiliary arc-shaped clamps 11 are locked together by the locking mechanisms 12 to form a ring or separate. After the main arc-shaped clamp 10 and the two auxiliary arc-shaped clamps 11 are locked together to form a ring, the insulation pipe 3 is clamped. When the main arc-shaped clamp 10 and the two auxiliary arc-shaped clamps 11 are separated from each other, they can be removed from the insulation pipe 3.

[0034] The locking mechanism 12 can be a hoop with a quick-release handle, wherein the main arc-shaped hoop 10 and two secondary arc-shaped hoops 11 are all set on the inner wall of the hoop, similar to the handle-type quick-release hose clamp in the prior art. The difference is that the hoop has a centering component, which is fixedly connected to the main arc-shaped hoop 10 or the secondary arc-shaped hoop 11 by means of the hoop.

[0035] In this embodiment, the locking mechanism 12 preferably has another structure, such as... Figure 3 As shown, specifically, the locking mechanism 12 includes an electric push rod 1201, a first cantilever 1202, and a second cantilever 1203. The first cantilever 1202 is fixed to the left and right ends of the main arc-shaped hoop 10, and the second cantilever 1203 is fixed to the secondary arc-shaped hoop 11. The mounting part of the electric push rod 1201 is hinged to the first cantilever 1202 via a first hinge shaft 1204, and the telescopic end of the electric push rod 1201 is hinged to the second cantilever 1203 via a second hinge shaft 1205. The first cantilever 1202 is hinged to the second cantilever 1203 via a third hinge shaft 1206. The third hinge shaft 1206 is located between the first hinge shaft 1204 and the second hinge shaft 1205, and the axes of the first hinge shaft 1204, the second hinge shaft 1205, and the third hinge shaft 1206 are parallel. Figure 4As shown, the telescopic end of the electric push rod 1201 retracts, driving the secondary arc-shaped clamps 11 to swing outward around the third hinge axis 1206, forming an opening between the secondary arc-shaped clamps 11. This facilitates the removal of the first clamp 1 and the second clamp 2 from the insulation pipe 3 in place, without requiring long-distance movement along the axial direction of the insulation pipe 3. The central angles of the main arc-shaped clamp 10 and the two secondary arc-shaped clamps 11 are all less than or equal to 180°. In this embodiment, it is preferable that the central angle of the main arc-shaped clamp 10 is equal to 180°, and the central angles of the secondary arc-shaped clamps 11 are all 90°.

[0036] The clamping system includes a pair of centering components, which are located on both sides of the insulation pipe 3 and on the same radial line of the insulation pipe 3. During traction, the insulation pipe 3 is subjected to force on both sides, and the overall force is more balanced during the docking process of the insulation pipe 3. In this embodiment, the two centering components are located on the main arc-shaped hoop 10 and one of the secondary arc-shaped hoops 11, respectively. The anti-detachment groove 8 and the anti-detachment rod 9 reduce the restriction on the opening direction of the notch 702.

Claims

1. A large-diameter insulation pipe end clamping system, comprising a first clamp (1) and a second clamp (2), wherein the first clamp (1) is sleeved on the end of the insulation pipe (3) on the fixed side, and the second clamp (2) is sleeved on the end of the insulation pipe (3) on the side to be welded, characterized in that: The clamping system further includes a centering assembly, which includes a traction rope (4), a first guide (5), and a second guide (6). The first guide (5) and the second guide (6) are respectively disposed on the first clamp (1) and the second clamp (2) and form a guiding fit. The traction rope (4) includes a connecting end (401) and a pulling end (402). The connecting end (401) is connected to the second guide (6). The pulling end (402) passes through the axial hole of the first guide (5) and is connected to the pulling unit. The second clamp (2) has the freedom to move toward the first clamp (1) by means of the pulling of the pulling end (402).

2. The large-diameter insulated pipe end clamping system according to claim 1, characterized in that: The ends of the first guide member (5) and the second guide member (6) are inserted into each other, the axial hole is coaxially arranged with the first guide member (5), and the connecting end (401) is coaxially arranged with the second guide member (6).

3. The large-diameter insulated pipe end clamping system according to claim 2, characterized in that: The first guide member (5) is a guide hole, and the second guide member (6) is a guide rod with a cone head.

4. The large-diameter insulated pipe end clamping system according to claim 1, characterized in that: The second clamp (2) is provided with a mounting bracket (7), and the mounting bracket (7) is provided with a stepped hole (701). The second guide (6) is a T-shaped structure. The second guide (6) and the stepped hole (701) form an axial hook engagement. The stepped hole (701) is provided with a notch (702) along its radial direction and forms a U-shaped structure with the help of the notch (702). The notch (702) forms a quick-installation channel for the second guide (6) to enter and exit the stepped hole (701).

5. The large-diameter insulated pipe end clamping system according to claim 4, characterized in that: The mounting bracket (7) is also provided with an anti-detachment groove (8), which includes a radial section (801) and an axial section (802). The anti-detachment groove (8) forms an L-shaped structure with the help of the radial section (801) and the axial section (802). The overhanging end of the radial section (801) is open. The second guide member (6) is provided with an anti-detachment rod (9) located at the end of the axial section (802). The side wall of the axial section (802) is guided by the anti-detachment rod (9). The end of the axial section (802) faces the first guide member (5).

6. The large-diameter insulated pipe end clamping system according to claim 1, characterized in that: The second clamp (2) includes a main arc-shaped clamp (10) and a secondary arc-shaped clamp (11) disposed on the left and right sides of the main arc-shaped clamp (10). The main arc-shaped clamp (10) and the secondary arc-shaped clamp (11) abut each other to form a ring. The second clamp (2) has the same structure as the first clamp (1). Both the first clamp (1) and the second clamp (2) are provided with locking mechanisms (12).

7. The large-diameter insulation pipe end clamping system according to claim 6, characterized in that: The locking mechanism (12) includes an electric push rod (1201), a first cantilever (1202) and a second cantilever (1203). The first cantilever (1202) is fixed to the left and right ends of the main arc-shaped hoop (10), and the second cantilever (1203) is fixed to the auxiliary arc-shaped hoop (11). The mounting part of the electric push rod (1201) is hinged to the first cantilever (1202) via a first hinge shaft (1204). The telescopic end of the electric push rod (1201) is hinged to the second cantilever (1203) via a second hinge shaft (1205). The first cantilever (1202) is hinged to the second cantilever (1203) via a third hinge shaft (1206). The third hinge shaft (1206) is located between the first hinge shaft (1204) and the second hinge shaft (1205).

8. The large-diameter insulation pipe end clamping system according to claim 1, characterized in that: The clamping system includes a pair of centering components, which are located on both sides of the insulation tube (3) and on the same radial line of the insulation tube (3).

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