Heating structure for pipeline welding heat treatment

Abstract

The utility model discloses a heating structure for pipeline welding heat treatment, and particularly relates to the technical field of pipeline welding, the device is driven by reset springs of a plurality of arc-shaped seats, an assembly ring can automatically contract to adapt to pipelines with different thicknesses, additional adjustment is not needed, the application range of the device is widened, and the flexibility of the device is improved. The nozzle connected with the acetylene heating device can uniformly heat around the pipeline, uniform temperature distribution of the surface of the pipeline is guaranteed, welding quality and efficiency are improved, supporting pieces on the two sides of the device comprise guide wheels, the guide wheels make contact with the pipeline through elastic force of telescopic springs, the assembly ring is stably supported, and excessive shrinkage is prevented from affecting the heating effect. Due to the arrangement of the multiple guide wheels, the heating device can flexibly move in the axis direction of the pipeline, the heating position is changed, the welding requirements of different parts are met, the operation convenience and efficiency are improved, an operator only needs to sleeve the pipeline, complex adjustment and operation steps are not needed, the operation difficulty and time cost are reduced, and the working efficiency is improved. And the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a heating structure for pipeline welding heat treatment. Background Art

[0002] Pipeline transportation has the characteristics of large transportation volume, low investment, no noise along the way, and can better meet the requirements of green logistics. It has now become the main mode of liquid and gas transportation. The welding between pipelines affects the transportation effect and service life. Preheating before welding can reduce the temperature difference between the weld and the surrounding metal and reduce the thermal stress of the weld metal. In addition, preheating can also help to remove gas, especially hydrogen overflowing from the weld.

[0003] In the prior art, there are two methods for heating pipelines: electric heating and flame heating. However, electric heating equipment is large in size, not easy to move, and the operation is cumbersome, which is very inconvenient to use. Therefore, flame heating is mostly used for pipeline welding operations. However, the existing flame heating is usually a ring-shaped pipeline with a relatively fixed size and an integrated type. It is not easy to carry when used, and it cannot be applied to a variety of sizes, and its practicality is not high. Therefore, we propose a heating structure for pipeline welding heat treatment to solve the above problems. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A heating structure for pipeline welding heat treatment comprises an assembly ring, wherein the assembly ring comprises a plurality of arc seats, wherein the plurality of arc seats are surrounded to form an annular structure, wherein one end of the plurality of arc seats close to each other is provided with a connection component for changing the inner diameter of the assembly ring and stabilizing the assembly ring, wherein a connector is mounted on the outer ring end face of the arc seat, wherein a nozzle for heating the pipeline is mounted on the inner ring end face of the arc seat, wherein the connector is connected to the nozzle, and wherein support components for keeping the nozzle at a certain distance from the pipeline are fixedly connected on both sides of the assembly ring.

[0007] Preferably, the plurality of arc-shaped seats are evenly distributed around the axis of the assembly ring, the connection assembly comprises a plurality of installation chambers, the installation chamber is opened at one end of the arc-shaped seat, a sliding seat is provided at the bottom of the inner cavity of the installation chamber, and the sliding seat is slidably connected to the inner wall of the installation chamber.

[0008] Preferably, the sliding seat is fixedly connected to an arc rod on one side away from the bottom of the inner cavity of the installation chamber, and a connecting window is opened at one end of the arc seat close to the installation chamber. The connecting window is connected to the installation chamber, and the cross-sectional area of ​​the connecting window is smaller than the cross-sectional area of ​​the installation chamber.

[0009] Preferably, one end of the arc rod away from the sliding seat extends through the connecting window to another arc seat, the end of the arc rod away from the sliding seat is fixedly connected to the arc seat, the arc rod is slidably connected to the inner wall of the connecting window, and a return spring is sleeved on one end surface of the arc rod in the installation chamber.

[0010] Preferably, the inner wall of the reset spring does not contact the arc rod, and a positioning tube and a connecting tube are sleeved at both ends of the reset spring. The end of the positioning tube away from the telescopic spring is fixedly connected to the sliding seat, and the end of the connecting tube away from the reset spring is fixedly connected to the side of the installation chamber close to the connecting window.

[0011] Preferably, the support assembly includes a plurality of fixing seats, and the plurality of fixing seats are respectively fixedly connected to two sides of a plurality of arc-shaped seats, and the fixing seats on both sides are symmetrically distributed along the axis of the arc-shaped seats.

[0012] Preferably, the end surfaces of the fixing seat that are far away from each other are fixedly connected with a supporting seat, and one end of the supporting seat close to the axis of the assembly ring is fixedly connected with a mounting tube, and a telescopic spring is built into the mounting tube.

[0013] Preferably, one end of the telescopic spring is fixedly connected to the bottom of the inner cavity of the installation tube, and the other end of the telescopic spring is fixedly connected to a moving rod. The moving rod is placed in the installation tube and slidably connected thereto, and one end of the moving rod close to the axis of the assembly ring is rotatably connected to a guide wheel.

[0014] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0015] The utility model is driven by the reset springs of multiple arc seats, and the assembly ring can automatically shrink to adapt to pipes of different thicknesses without additional adjustment, thereby improving the application range and flexibility of the device. The nozzle connected to the acetylene heating device can surround the pipe for uniform heating, ensuring uniform temperature distribution on the pipe surface, improving welding quality and efficiency. The support members on both sides of the device include guide wheels that contact the pipe through the elastic force of the telescopic spring, stably supporting the assembly ring, preventing excessive shrinkage from affecting the heating effect, and ensuring the stability and reliability of the heating operation. The arrangement of multiple guide wheels allows the heating device to be flexibly moved along the axis of the pipe, which is convenient for changing the heating position and adapting to the welding needs of different parts, thereby improving the convenience and efficiency of operation. The operator only needs to sleeve it on the pipe for use, without complicated adjustment and operation steps, reducing the difficulty of operation and time cost, and improving work efficiency. The heating structure for pipe welding heat treatment has a highly adaptable, efficient and practical welding heating device, which can meet the needs of pipe welding heat treatment and improve work efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the assembly structure of the support component and the arc seat of the utility model.

[0018] Figure 3 It is a schematic diagram of the assembly structure of the assembly ring and the connecting component of the utility model.

[0019] Figure 4 For this utility model Figure 3 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. Assembly ring; 101. Arc seat; 102. Connecting head; 103. Nozzle; 2. Connecting assembly; 201. Mounting chamber; 202. Sliding seat; 203. Arc rod; 204. Positioning cylinder; 205. Return spring; 206. Connecting cylinder; 207. Connecting window; 3. Support assembly; 301. Fixed seat; 302. Support seat; 303. Mounting cylinder; 304. Telescopic spring; 305. Moving rod; 306. Guide wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Figure 1-Figure 4 As shown, the utility model provides a heating structure for pipeline welding heat treatment, including an assembly ring 1, wherein the assembly ring 1 includes a plurality of arc seats 101, and the plurality of arc seats 101 are surrounded to form an annular structure, and one end of the plurality of arc seats 101 close to each other is provided with a connecting component 2 for changing the inner diameter size of the assembly ring 1 and stabilizing itself, a connecting head 102 is installed on the outer ring end surface of the arc seat 101, and a nozzle 103 for heating the pipeline is installed on the inner ring end surface of the arc seat 101, the connecting head 102 is connected to the nozzle 103, and support components 3 for keeping the nozzle 103 at a certain distance from the pipeline are fixedly connected on both sides of the assembly ring 1, and the cooperation of the plurality of components can meet the needs of pipeline welding heat treatment and is used to improve work efficiency and quality.

[0023] In order to adapt the device to the heating of pipes of different thicknesses, a plurality of arc seats 101 are evenly distributed around the axis of the assembly ring 1, and a plurality of installation chambers 201 are arranged in the connection assembly 2. The installation chamber 201 is opened at one end of the arc seat 101, and a sliding seat 202 is arranged at the bottom of the inner cavity of the installation chamber 201. The sliding seat 202 is slidably connected to the inner wall of the installation chamber 201, and an arc rod 203 is fixedly connected to the side of the sliding seat 202 away from the bottom of the inner cavity of the installation chamber 201. A connecting window 207 is opened at one end of the arc seat 101 close to the installation chamber 201, and the connecting window 207 is connected to the installation chamber 201. The cross-sectional area of ​​the connecting window 207 is smaller than the cross-sectional area of ​​the installation chamber 201. One end of the arc rod 203 away from the sliding seat 202 extends to another arc seat 101 through the connecting window 207, and one end of the arc rod 203 away from the sliding seat 202 is fixedly connected to the arc seat 101. 03 is slidably connected to the inner wall of the connecting window 207, a return spring 205 is sleeved on the surface of one end of the arc rod 203 in the installation chamber 201, and the inner wall of the return spring 205 does not contact the arc rod 203, and a positioning tube 204 and a connecting tube 206 are sleeved on both ends of the return spring 205. The end of the positioning tube 204 away from the telescopic spring 304 is fixedly connected to the sliding seat 202, and the end of the connecting tube 206 away from the return spring 205 is fixedly connected to the side of the installation chamber 201 close to the connecting window 207. The device is sleeved on the pipeline to be welded, and the assembly ring 1 formed by its multiple arc seats 101 coincides with the axis of the pipeline. Adjacent arc seats 101 will approach each other under the elastic force of the return spring 205 inside themselves, and the return spring 205 drives the sliding seat 202 to move in the installation chamber 201, so that the assembly ring 1 formed by the arc seat 101 will automatically shrink to adapt to pipelines of different thicknesses.

[0024] In order to improve the welding quality and prevent the heating element from contacting the pipeline too much, a plurality of fixed seats 301 are arranged in the support assembly 3, and the plurality of fixed seats 301 are respectively fixedly connected to the two sides of the plurality of arc seats 101, and the fixed seats 301 on both sides are symmetrically distributed along the axis of the arc seat 101, and the end faces of the fixed seats 301 away from each other are fixedly connected with the support seat 302, and one end of the support seat 302 close to the axis of the assembly ring 1 is fixedly connected with the installation cylinder 303, and the installation cylinder 303 has a built-in telescopic spring 304, and one end of the telescopic spring 304 is fixedly connected to the bottom of the inner cavity of the installation cylinder 303, and the other end of the telescopic spring 304 is fixedly connected with the moving rod 305, and the moving rod 305 is placed in the installation cylinder 303 and is slidably connected thereto, one end of the moving rod 305 close to the axis of the assembly ring 1 is rotatably connected to a guide wheel 306, and multiple support members on both sides of the assembly ring 1 including the guide wheel 306 will contact the pipeline first through the elastic force of the telescopic spring 304, support the assembly ring 1, prevent the assembly ring 1 from shrinking too much so that the nozzle 103 contacts the pipeline and cannot spray flames, resulting in failure to heat, stably support the assembly ring 1, prevent excessive shrinkage from affecting the heating effect, and ensure the stability and reliability of the heating operation. The arrangement of multiple guide wheels 306 on both sides also facilitates the heating device to move along the axis of the pipeline, and flexibly change the heating position before welding.

[0025] Working principle: When using this device, by sleeve-mounting the device on the pipe to be welded, the assembly ring 1 formed by the multiple arc seats 101 coincides with the pipe axis, and the adjacent arc seats 101 are driven by the elastic force of the internal reset spring 205 to move closer to each other. The reset spring 205 drives the sliding seat 202 to move in the installation chamber 201, so that the assembly ring 1 formed by the arc seat 101 will automatically shrink to adapt to pipes of different thicknesses. The acetylene heating device can be connected to the outer ring of the multiple arc seats 101 through the connector 102, and the nozzle 103 is used to surround the pipe for uniform heating. During use, multiple support members on both sides of the assembly ring 1 including the guide wheel 306 will contact the pipeline first through the elastic force of the telescopic spring 304 to support the assembly ring 1, prevent the assembly ring 1 from shrinking too much, causing the nozzle 103 to contact the pipeline and fail to spray flames, resulting in failure to heat, stably support the assembly ring 1, prevent excessive shrinkage from affecting the heating effect, and ensure the stability and reliability of the heating operation. The arrangement of multiple guide wheels 306 on both sides also facilitates the movement of the heating device along the axis of the pipeline, flexibly changing the heating position before welding, adapting to the welding requirements of different parts, and improving the convenience and efficiency of operation.

[0026] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A heating structure for pipeline welding heat treatment, characterized in that: The assembly ring (1) comprises a plurality of arc seats (101), wherein the plurality of arc seats (101) are arranged around to form an annular structure, and a connection component (2) for changing the inner diameter of the assembly ring (1) and stabilizing the assembly ring (1) is arranged at one end of the plurality of arc seats (101) close to each other, and a connector (102) is installed on the outer ring end surface of the arc seat (101), and a nozzle (103) for heating a pipeline is installed on the inner ring end surface of the arc seat (101), and the connector (102) is connected to the nozzle (103), and support components (3) for keeping the nozzle (103) at a certain distance from the pipeline are fixedly connected to both sides of the assembly ring (1).

2. A heating structure for pipeline welding heat treatment according to claim 1, characterized in that: The plurality of arc-shaped seats (101) are evenly distributed around the axis of the assembly ring (1); the connection assembly (2) comprises a plurality of installation chambers (201); the installation chamber (201) is opened at one end of the arc-shaped seat (101); a sliding seat (202) is provided at the bottom of the inner cavity of the installation chamber (201); and the sliding seat (202) is slidably connected to the inner wall of the installation chamber (201).

3. A heating structure for pipeline welding heat treatment according to claim 2, characterized in that: The side of the sliding seat (202) away from the bottom of the inner cavity of the installation chamber (201) is fixedly connected with an arc rod (203), and the end of the arc seat (101) close to the installation chamber (201) is provided with a connecting window (207), the connecting window (207) is connected with the installation chamber (201), and the cross-sectional area of ​​the connecting window (207) is smaller than the cross-sectional area of ​​the installation chamber (201).

4. A heating structure for pipeline welding heat treatment according to claim 3, characterized in that: One end of the arc rod (203) away from the sliding seat (202) passes through the connecting window (207) and extends to another arc seat (101); one end of the arc rod (203) away from the sliding seat (202) is fixedly connected to the arc seat (101); the arc rod (203) is slidably connected to the inner wall of the connecting window (207); and a return spring (205) is sleeved on one end surface of the arc rod (203) in the installation chamber (201).

5. A heating structure for pipeline welding heat treatment according to claim 4, characterized in that: The inner wall of the reset spring (205) does not contact the arc rod (203); the two ends of the reset spring (205) are sleeved with a positioning tube (204) and a connecting tube (206); the end of the positioning tube (204) away from the telescopic spring (304) is fixedly connected to the sliding seat (202); the end of the connecting tube (206) away from the reset spring (205) is fixedly connected to a side of the installation chamber (201) close to the connecting window (207).

6. The heating structure for pipeline welding heat treatment according to claim 1, characterized in that: The support assembly (3) comprises a plurality of fixed seats (301), wherein the plurality of fixed seats (301) are respectively fixedly connected to two sides of a plurality of arc-shaped seats (101), and the fixed seats (301) on both sides are symmetrically distributed along the axis of the arc-shaped seat (101).

7. A heating structure for pipeline welding heat treatment according to claim 6, characterized in that: The end faces of the fixed seat (301) that are away from each other are fixedly connected to a support seat (302), and one end of the support seat (302) close to the axis of the assembly ring (1) is fixedly connected to a mounting tube (303), and a telescopic spring (304) is built into the mounting tube (303).

8. A heating structure for pipeline welding heat treatment according to claim 7, characterized in that: One end of the telescopic spring (304) is fixedly connected to the bottom of the inner cavity of the installation tube (303), and the other end of the telescopic spring (304) is fixedly connected to a moving rod (305). The moving rod (305) is placed in the installation tube (303) and is slidably connected thereto. One end of the moving rod (305) close to the axis of the assembly ring (1) is rotatably connected to a guide wheel (306).

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