Multi-layer high-temperature wear-resistant composite pipe

Abstract

The invention discloses a multi-layer high-temperature wear-resistant composite pipe, and relates to the technical field of pipe joints, the multi-layer high-temperature wear-resistant composite pipe comprises a pipe main body and a thermal expansion stress dispersion mechanism, the thermal expansion stress dispersion mechanism is located in a joint sleeve, the thermal expansion stress dispersion mechanism comprises a group of first fixing blocks and second fixing blocks, and the pipe main body is sleeved with the joint sleeve; a thermal expansion telescopic compensation mechanism and a thermal expansion telescopic anti-falling mechanism are arranged on the outer side of the connector sleeve, a second fixing block is installed between the inner sides of the first fixing blocks, thermal expansion buffering elastic components are installed on the two sides of the inner surface wall of the second fixing block, and the thermal expansion buffering elastic components are used for buffering the radial thermal expansion pressure of the pipeline body. And through the double effects of attaching clamping and telescopic deformation, the thermal expansion stress of the pipeline is actively dispersed, the displacement amount is absorbed, the limitation of traditional fixed connection is broken through, and stress damage and sealing failure caused by thermal expansion of the connector are effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of pipe fitting technology, specifically to a multi-layer high-temperature wear-resistant composite pipe. Background Technology

[0002] Composite pipe is a tubular structure made by combining two or more different materials through a specific process. Its core feature is that it retains the excellent properties of each individual material (such as strength, corrosion resistance, thermal conductivity, and lightweight) while avoiding the defects of a single material (such as metals being prone to rust and non-metals having low strength), thereby meeting the high requirements for the comprehensive performance of pipelines in different scenarios.

[0003] Because multi-layer high-temperature wear-resistant composite pipes are prone to stress concentration due to thermal expansion in high-temperature environments, leading to damage to joint components, and there are risks such as uncontrolled displacement, detachment, and sealing failure of the pipe inside the joint during thermal expansion, a pipe joint structure that can effectively cope with thermal expansion is needed.

[0004] While existing technologies offer some solutions to the aforementioned problems, most are inadequate. For instance, they typically rely on simple fixing or buffering structures to address thermal expansion, lacking effective stress dispersion and precise control over pipeline displacement. Consequently, they fail to form a comprehensive protection system from multiple dimensions, thus impacting the stability and service life of pipelines in high-temperature environments.

[0005] Therefore, we propose a multi-layer high-temperature wear-resistant composite pipe to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-layer high-temperature wear-resistant composite pipe thermal expansion protection connection device, which addresses the problems of stress concentration, displacement loss and sealing failure caused by thermal expansion of pipelines in high-temperature environments. Traditional pipeline connection methods lack effective stress dispersion, expansion and contraction compensation and anti-detachment limiting mechanisms, which can easily lead to component damage, pipeline detachment and shortened service life.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a multi-layer high-temperature wear-resistant composite pipe, comprising a pipe body, wherein a thermal expansion and contraction compensation mechanism, a thermal expansion and contraction anti-detachment mechanism, a thermal expansion stress dispersion mechanism and a joint sleeve are installed on the outside of the pipe body, and the thermal expansion and contraction anti-detachment mechanism is located inside the thermal expansion and contraction compensation mechanism, and the thermal expansion stress dispersion mechanism is located inside the joint sleeve. The thermal expansion stress dispersion mechanism includes a set of first fixing blocks, which are installed on the inner wall of the connector sleeve. A second fixing block is installed between the first fixing blocks. Thermal expansion buffer elastic components are respectively opened and installed on both sides of the inner wall of the second fixing block. The thermal expansion buffer elastic components are elastically connected to the second fixing block. The thermal expansion buffer elastic components are used to buffer the radial pressure generated by the thermal expansion of the pipe body, so as to avoid stress concentration that could cause deformation or damage to the components. Wedge-shaped openings are opened on both sides of the outer wall of the second fixing block, and wedge-shaped positioning guide blocks are provided on the inner wall of the wedge-shaped openings. A set of arc-shaped clamping components is installed on one side of the outer wall of the wedge-shaped positioning guide blocks. The set of arc-shaped clamping components is used to fit against the outer wall of the pipe body to achieve stable clamping of the pipe.

[0008] Preferably, a support and positioning guide arm is connected to one side of the outer wall of one set of the arc-shaped clamping members, and one end of the support and positioning guide arm is connected to the first fixing block. The support and positioning guide arm is used to support the arc-shaped clamping members and provide guidance for their displacement during the thermal expansion of the pipeline. A connecting seat is sleeved on the outer wall of the support and positioning guide arm.

[0009] Preferably, a stress-dispersing sleeve is installed at one end of a set of the connecting seats, and the stress-dispersing sleeve is slidably connected to the arc-shaped clamp and the support positioning guide arm. The stress-dispersing sleeve is used to evenly distribute the stress borne by the arc-shaped clamp and the support positioning guide arm to the joint sleeve, thereby reducing the load on local components. A pipe body is installed on one side of the outer wall of the arc-shaped clamp, and a set of thermal expansion and contraction compensation mechanisms are installed on both sides of the outer wall of the joint sleeve. The thermal expansion and contraction compensation mechanism includes a set of joint connecting frames.

[0010] Preferably, a set of support rods are rotatably connected to both ends of the inner surface wall of a set of joint connecting frames. The support rods are used to support and link the internal components of the thermal expansion and contraction compensation mechanism. A set of thermal compensation expansion members are connected between a set of joint connecting frames. The thermal compensation expansion members are used to absorb the axial thermal expansion of the pipeline through their own expansion and contraction deformation, so as to avoid the joint from failing due to axial tension or compression.

[0011] Preferably, a ring-shaped thermal expansion compensation is connected between a group of the joint connecting brackets. The ring-shaped thermal expansion compensation is used to compensate for the circumferential stress caused by the radial thermal expansion of the pipeline and maintain the sealing fit between the joint and the pipeline. A gear is rotatably installed in the middle of the outer wall of a group of the support rods, and a group of ring-shaped mounting rings is rotatably installed in the outer wall of the pipeline body.

[0012] Preferably, the outer wall of the annular mounting ring is provided with fixing rods at both ends. The fixing rods are installed on both sides of the inner wall of the connector frame. The fixing rods are used to fix the annular mounting ring on the connector frame to ensure its stable position. The outer wall of the annular mounting ring is provided with a meshing groove.

[0013] Preferably, the meshing groove is used to mesh with the gear, converting the rotation of the annular mounting ring caused by the thermal expansion of the pipeline into the rotational power of the gear. The gear rotates synchronously with the support rod, and a set of base plates is installed on the outer wall of the support rod, with the base plates located on both sides of the outer wall of the gear.

[0014] Preferably, the base plate is used for bearing, and transmission sleeves are rotatably installed on both sides of the outer wall of the base plate. A support rod is fixedly sleeved on the inner wall of the transmission sleeve. The transmission sleeve is used to transmit the rotation of the support rod to achieve stable power transmission.

[0015] Preferably, a trajectory running plate is installed on one side of the outer wall of the transmission sleeve. The trajectory running plate is used to limit the movement trajectory, ensure that the thermal expansion compensation action is carried out according to the preset path, and prevent the pipeline from falling off in reverse. A set of hinged connecting rod structures is installed on one side of the outer wall of the base plate.

[0016] Preferably, one set of the articulated link structure is used to convert the power transmitted by the gear into linear displacement through the articulated rotation of the link, preventing the gear from rotating in the opposite direction. One side of the outer wall of the set of articulated link structure is connected to a mounting plate, which is used for installation assistance and protection, and operates or limits itself based on its positional relationship with the track running plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention optimizes the traditional single resistance mode of pipelines to high-temperature thermal expansion by setting up a thermal expansion stress dispersion mechanism and a thermal expansion expansion compensation mechanism. It transforms passive stress bearing into active stress mitigation and compensation, effectively solving the problems of component damage and joint failure caused by radial and axial deformation of pipelines at high temperatures. The pipeline body is used as the core load-bearing component, with a joint sleeve fitted externally. A thermal expansion stress dispersion mechanism is installed inside the joint sleeve, and thermal expansion expansion compensation mechanisms are installed on both sides. When the pipeline body experiences radial thermal expansion due to high temperatures, its outer wall presses against the fitted arc-shaped clamping component. The arc-shaped clamping component drives the wedge-shaped positioning guide block to move outwards, supporting... Under the trajectory limitation of the positioning guide arm, the wedge-shaped positioning guide block slides along the wedge-shaped groove of the second fixed block, transmitting pressure to the thermal expansion buffer elastic component. The elastic component absorbs radial pressure through compression deformation. At the same time, the arc-shaped clamping component drives the stress dispersion sleeve to move closer to the joint sleeve, adapting to the radial deformation of the pipeline. When the temperature continues to rise, causing the main body of the pipeline to expand axially, it drives the joint connecting frame to move. The thermal expansion expansion component of the thermal expansion expansion compensation mechanism absorbs the axial expansion through stretching or compression. At the same time, the annular thermal expansion compensation between the joint connecting frames adapts to the radial dimension change through circumferential deformation, avoiding joint loosening and breakage and medium leakage.

[0018] 2. This invention optimizes the shortcomings of traditional pipelines that rely solely on compensation mechanisms to cope with thermal expansion by setting up an anti-detachment linkage system composed of annular mounting rings, gears, and hinged connecting rods. It improves simple deformation compensation into dual protection of power transmission and reverse limiting, effectively solving the problem of easy detachment when the main body of the pipeline expands axially. During the installation phase, the outer wall groove of the annular mounting ring, which is tightly attached to the outer wall of the pipe body, precisely meshes with the gear on the support rod. When the pipe body expands axially, it drives the annular mounting ring to roll on its outer wall. The meshing groove converts the displacement into the rotational power of the gear. The gear and the support rod rotate synchronously and transmit the power to the transmission sleeves on both sides. Subsequently, when the transmission sleeve rotates, the trajectory running plate on one side moves along the preset trajectory. The sliding and pressing cooperation with the mounting plate ensures structural stability. When the pipe body generates an outward force that causes the gear to rotate in the opposite direction, the hinged connecting rod structure at both ends of the base plate, which connects the mounting plate and the base plate respectively, acts in the opposite direction to the transmission system. With the help of the fit and engagement between the mounting plate and the trajectory running plate and its own support characteristics, the gear is prevented from rotating in the opposite direction. In turn, by limiting the rolling of the annular mounting ring, the pipe is prevented from falling off, thus realizing the operation guidance and limit control of the overall linkage structure. Attached Figure Description

[0019] Figure 1 This is a perspective view of the main structure of a multilayer high-temperature wear-resistant composite pipe according to the present invention. Figure 2 This is a perspective view of the thermal expansion and contraction anti-detachment mechanism and the thermal expansion stress dispersion mechanism in a multilayer high-temperature wear-resistant composite pipe according to the present invention. Figure 3 This is a plan view of the connection position in a multilayer high-temperature wear-resistant composite pipe according to the present invention; Figure 4 This is a plan view of the thermal expansion stress dispersion mechanism in a multilayer high-temperature wear-resistant composite pipe according to the present invention. Figure 5 This is a split perspective view of the thermal expansion stress dispersion mechanism in a multilayer high-temperature wear-resistant composite pipe according to the present invention. Figure 6 This is a split perspective view of the thermal expansion and contraction compensation mechanism in a multilayer high-temperature wear-resistant composite pipe according to the present invention. Figure 7 This is a three-dimensional view of a thermal expansion and contraction anti-detachment mechanism in a multi-layer high-temperature wear-resistant composite pipe according to the present invention. Figure 8 This is a schematic diagram of the installation position structure of the trajectory running plate and transmission sleeve in a multi-layer high-temperature wear-resistant composite pipe according to the present invention.

[0020] In the diagram: 1. Pipeline body; 200. Thermal expansion and contraction compensation mechanism; 201. Joint connecting frame; 202. Support rod; 203. Thermal compensation expansion component; 300. Thermal expansion and contraction anti-detachment mechanism; 301. Fixed rod; 302. Annular mounting ring; 303. Meshing groove; 304. Gear; 305. Base plate; 306. Hinge connecting rod structure; 307. Mounting plate; 308. Track running plate; 309. Transmission sleeve; 310. Annular thermal expansion compensation; 400. Thermal expansion stress dispersion mechanism; 401. Arc-shaped clamping component; 402. Support positioning guide arm; 403. Stress dispersion sleeve; 404. Connecting seat; 405. First fixing block; 406. Second fixing block; 407. Thermal expansion buffer elastic component; 408. Wedge-shaped positioning guide block; 5. Joint sleeve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention addresses the problem that multilayer high-temperature wear-resistant composite pipes are prone to joint stress concentration and sealing failure due to thermal expansion of the pipe body under high-temperature conditions, and the pipes are also prone to falling off due to uncontrolled displacement. Traditional composite pipe joints often lack targeted thermal expansion adaptation design and rely solely on fixed connection structure. They cannot effectively absorb axial and radial thermal expansion and are also difficult to disperse local stress. This process can easily cause deformation and damage to the joint components, and the pipe is prone to detach from the connection position during thermal expansion displacement, resulting in a shortened overall service life and reduced operational reliability of the composite pipe joint. This invention was developed to address the problems of the prior art by setting up a thermal expansion stress dispersion mechanism 400 and a thermal expansion and contraction compensation mechanism 200. Through the dual action of fitting and clamping and expansion and contraction deformation, the thermal expansion stress of the pipeline is actively dispersed and the displacement is absorbed, breaking the limitations of traditional fixed connections and effectively avoiding stress damage and sealing failure of the joint due to thermal expansion.

[0023] This invention provides a technical solution: a multi-layer high-temperature wear-resistant composite pipe, comprising a pipe body 1 and a thermal expansion stress dispersion mechanism 400. The thermal expansion stress dispersion mechanism 400 is located inside the joint sleeve 5. The thermal expansion stress dispersion mechanism 400 includes a set of first fixing blocks 405 and second fixing blocks 406. The joint sleeve 5 is sleeved on the outside of the pipe body 1. A thermal expansion expansion compensation mechanism 200 and a thermal expansion expansion anti-detachment mechanism 300 are provided on the outside of the joint sleeve 5. A second fixing block 406 is installed between the inner sides of the set of first fixing blocks 405. Thermal expansion buffer elastic components 407 are installed on both sides of the inner surface wall of the second fixing block 406. The thermal expansion buffer elastic components 407 are used to buffer the radial thermal expansion pressure of the pipe body 1 and avoid stress concentration that could cause deformation of the components.

[0024] In some embodiments, such as Figures 1-5 As shown, the second fixing block 406 has wedge-shaped openings on both sides of its outer wall, and the inner wall of the wedge-shaped opening is provided with a wedge-shaped positioning guide block 408. A set of arc-shaped clamping members 401 are installed on one side of the outer wall of the wedge-shaped positioning guide block 408. The set of arc-shaped clamping members 401 is used to fit against the outer wall of the pipe body 1 to achieve stable clamping of the pipe. A support positioning guide arm 402 is connected to one side of the outer wall of the set of arc-shaped clamping members 401, and one end of the set of support positioning guide arms 402 is connected to the first fixing block 405. The support positioning guide arm 402 is used to support the arc-shaped clamping members 401 and provide guidance for their displacement during the thermal expansion of the pipe. A connecting seat 404 is sleeved on the outer wall of the set of support positioning guide arms 402. A stress-dispersing sleeve 403 is installed on one end of the set of connecting seats 404, and the stress-dispersing sleeve 403 is slidably connected to the arc-shaped clamping members 401 and the support positioning guide arm 402. The stress-dispersing sleeve 403 is used to hold the arc-shaped clamping members 401 and the support positioning guide arm 402 together. The stress borne by the support positioning guide arm 402 is evenly distributed to the joint sleeve 5, reducing the load on local components. The pipe body 1 is installed on one side of the outer wall of the arc-shaped clamp 401. A set of thermal expansion and contraction compensation mechanisms 200 are installed on both sides of the outer wall of the joint sleeve 5. The thermal expansion and contraction compensation mechanism 200 includes a set of joint connecting frames 201. A set of support rods 202 are rotatably connected to both ends of the inner surface wall of the set of joint connecting frames 201. The support rods 202 are used to support and link the internal components of the thermal expansion and contraction compensation mechanism 200. A set of thermal compensation expansion members 203 are connected between the set of joint connecting frames 201. The thermal compensation expansion members 203 are used to absorb the axial thermal expansion of the pipe through their own expansion and contraction deformation, avoiding the failure of the joint due to axial tension or compression. A ring thermal expansion compensation 310 is connected between the set of joint connecting frames 201. The ring thermal expansion compensation 310 is used to compensate for the circumferential stress caused by the radial thermal expansion of the pipe and maintain the sealing fit between the joint and the pipe.

[0025] When using, such as Figure 1As shown, the main pipe body 1 is the core load-bearing component, and a joint sleeve 5 is fitted around its exterior. A thermal expansion stress dispersion mechanism 400 is installed inside the joint sleeve 5, and thermal expansion and contraction compensation mechanisms 200 are assembled on both sides of the joint sleeve 5. When the main pipe body 1 is in a high-temperature environment, radial thermal expansion occurs first. The outer wall of the main pipe body 1 exerts outward pressure on the fitted arc-shaped clamping member 401, such as... Figure 5 As shown, under pressure, the arc-shaped clamping member 401 drives the wedge-shaped positioning guide block 408 outward together. During this process, the two ends of the supporting positioning guide arm 402 are connected to the first fixed block 405 and the arc-shaped clamping member 401 respectively. The running trajectory of the arc-shaped clamping member 401 is determined by the supporting positioning guide arm 402 to ensure that there is no deviation during the outward process (that is, to ensure that the wedge-shaped positioning guide block 408 moves inside the wedge groove opened in the second fixed block 406). The pressure is transmitted to the thermal expansion buffer elastic members 407 (which can be high-temperature resistant chromium vanadium steel helical springs) on both sides inside the second fixed block 406 through compression (the contact surface between the wedge-shaped positioning guide block 408 and the thermal expansion buffer elastic member 407). The thermal expansion buffer elastic member 407 absorbs part of the radial pressure through compression deformation, achieving initial buffering. The arc-shaped clamping member 401 drives the stress dispersion sleeve 403 to move outward together (that is, from the inside to the outside, moving closer to the joint sleeve 5). Figure 5 As shown), this allows the pipe fitting to adapt to the deformation of the pipe body 1 during expansion. As the temperature continues to rise, the pipe body 1 further expands axially, as shown... Figure 6 As shown, the associated joint connecting frame 201 is driven to generate axial displacement (the joint sleeve 5 does not have axial expansion and contraction capability, so the axial force is solved by the thermal expansion and contraction compensation mechanism 200 on both sides of the joint sleeve 5). The thermal compensation expansion member 203 between the joint connecting frames 201 is stretched or compressed accordingly, directly absorbing the axial thermal expansion, avoiding loosening and breakage of the joint. At the same time, the annular thermal expansion compensation 310 between the joint connecting frames 201 adapts to the size change of the radial expansion of the pipeline through circumferential elastic deformation.

[0026] In some embodiments, such as Figure 3 and Figure 6-8As shown, a gear 304 is rotatably mounted on the middle of the outer wall of a set of support rods 202. A set of annular mounting rings 302 is rotatably mounted on the outer wall of the pipe body 1. Fixing rods 301 are installed at both ends of the outer wall of the annular mounting rings 302. The fixing rods 301 are installed on both sides of the inner wall of the connector frame 201. The fixing rods 301 are used to fix the annular mounting rings 302 on the connector frame 201 to ensure their stable position. The outer wall of the annular mounting rings 302 is provided with a meshing groove 303, which is used to mesh with the gear 304. The rotation of the annular mounting rings 302 driven by the thermal expansion of the pipe is converted into the rotational power of the gear 304. The gear 304 rotates synchronously with the support rods 202. A set of base plates 305 are installed on the outer wall of the support rods 202, and the base plates 305 are located on both sides of the outer wall of the gear 304. The base plates 305 are used for bearing, and the outer walls of the base plates 305 are provided with meshing grooves 303. A transmission sleeve 309 is rotatably mounted, and a support rod 202 is fixedly sleeved on the inner wall of the transmission sleeve 309. The transmission sleeve 309 is used to transmit the rotation of the support rod 202 to achieve stable power transmission. A trajectory running plate 308 is installed on one side of the outer wall of the transmission sleeve 309. The trajectory running plate 308 is used to limit the motion trajectory to ensure that the thermal expansion compensation action is carried out according to the preset path and to prevent the pipeline from falling off in reverse. A set of hinged connecting rod structures 306 is installed on one side of the outer wall of the base plate 305. The set of hinged connecting rod structures 306 is used to convert the power transmitted by the gear 304 into linear displacement through the hinged rotation of the connecting rod to prevent the gear 304 from rotating in reverse. A mounting plate 307 is connected to one side of the outer wall of the set of hinged connecting rod structures 306. The mounting plate 307 is used for installation assistance and protection, and operates or limits itself based on its positional relationship with the trajectory running plate 308.

[0027] When using, such as Figure 3 As shown, when the main body of the pipe 1 expands axially as the temperature continues to rise, due to the aforementioned thermal compensation expansion joint 203 (such as...), Figure 6The structure can be made of multiple connecting joints to form a movable expansion and contraction deformation adjustment) and an annular thermal expansion compensation 310 (a rubber compensator can be used) to adapt to the dimensional changes of radial expansion of the pipeline through deformation. However, it cannot be guaranteed that the pipeline body 1 will not fall off during axial expansion. Therefore, as shown in the following process, during the installation process, the meshing groove 303 on the outer wall of the annular mounting ring 302 (this component is closely attached to the outer wall of the pipeline body 1) meshes with the gear 304 on the support rod 202, converting the displacement (the annular mounting ring 302 rolls on the pipeline body 1) into the rotational power of the gear 304. The gear 304 rotates synchronously with the support rod 202, transmitting the power to the transmission sleeves 309 on both sides of the gear 304. As the transmission sleeve 309 rotates with the gear 304, the track running plate 308 installed on one side of the transmission sleeve 309 moves along a preset track (i.e., moves in the direction of the gear 304's rotation (the annular mounting ring 302 rotates in the pipe body 1)). Through its positional cooperation with the mounting plate 307 (the track running plate 308 can slide and press against the mounting plate 307), stable installation is ensured. When the pipe body 1 expands axially due to a continuous increase in temperature, the pipe body 1 generates an outward force to detach, such as... Figure 7 As shown, gear 304 has a tendency to rotate in the opposite direction (opposite to the installation direction). At this time, the hinged linkage structure 306 on the base plate 305 acts in the opposite direction to the transmission system (gear 304, support rod 202, transmission sleeve 309 and track running plate 308). This causes gear 304 to be prevented from rotating in the opposite direction by the contact (the plates are in contact with each other) and support characteristics (the two ends of the hinged linkage structure 306 are connected to the mounting plate 307 and the base plate 305 respectively). This prevents the pipe from falling off in the opposite direction (gear 304 determines the rotation of the annular mounting ring 302 (the annular mounting ring 302 rolls on the pipe body 1)). This achieves the operation guidance or limit control of the overall linkage structure.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer high-temperature wear-resistant composite pipe, characterized in that: The system includes a pipe body (1), and the pipe body (1) is equipped with a thermal expansion and contraction compensation mechanism (200), a thermal expansion and contraction anti-detachment mechanism (300), a thermal expansion stress dispersion mechanism (400), and a joint sleeve (5). The thermal expansion and contraction anti-detachment mechanism (300) is located inside the thermal expansion and contraction compensation mechanism (200), and the thermal expansion stress dispersion mechanism (400) is located inside the joint sleeve (5). The thermal expansion stress dispersion mechanism (400) includes a set of first fixing blocks (405), which are installed on the inner wall of the connector sleeve (5). A second fixing block (406) is installed between the first fixing blocks (405). Thermal expansion buffer elastic components (407) are respectively opened and installed on both sides of the inner wall of the second fixing block (406). The thermal expansion buffer elastic components (407) are elastically connected to the second fixing block (406). The thermal expansion buffer elastic components (407) are used to buffer the radial pressure generated by the thermal expansion of the pipe body, so as to avoid stress concentration and deformation or damage of the components. Wedge-shaped openings are opened on both sides of the outer wall of the second fixing block (406), and wedge-shaped positioning guide blocks (408) are provided on the inner wall of the wedge-shaped openings. A set of arc-shaped clamping components (401) is installed on one side of the outer wall of the wedge-shaped positioning guide block (408). The set of arc-shaped clamping components (401) is used to fit the outer wall of the pipe body (1) to achieve stable clamping of the pipe.

2. The multilayer high-temperature wear-resistant composite pipe according to claim 1, characterized in that: A set of arc-shaped clamping members (401) has a supporting positioning guide arm (402) connected to one side of its outer wall, and one end of the set of supporting positioning guide arms (402) is connected to the first fixing block (405). The supporting positioning guide arm (402) is used to support the arc-shaped clamping member (401) and provide guidance for its displacement during the thermal expansion of the pipeline. A connecting seat (404) is sleeved on the outer wall of the set of supporting positioning guide arms (402).

3. The multilayer high-temperature wear-resistant composite pipe according to claim 2, characterized in that: A stress-dispersing sleeve (403) is installed at one end of a set of connecting seats (404), and the stress-dispersing sleeve (403) is slidably connected to the arc-shaped clamp (401) and the support positioning guide arm (402). The stress-dispersing sleeve (403) is used to evenly disperse the stress borne by the arc-shaped clamp (401) and the support positioning guide arm (402) to the joint sleeve (5) to reduce the load on local components. A pipe body (1) is installed on one side of the outer wall of the arc-shaped clamp (401), and a set of thermal expansion and contraction compensation mechanisms (200) are installed on both sides of the outer wall of the joint sleeve (5). The thermal expansion and contraction compensation mechanism (200) includes a set of joint connecting frames (201).

4. The multilayer high-temperature wear-resistant composite pipe according to claim 3, characterized in that: A set of support rods (202) are rotatably connected to both ends of the inner surface of a set of joint connecting frames (201). The support rods (202) are used to support and link the internal components of the thermal expansion and contraction compensation mechanism (200). A set of thermal compensation expansion members (203) are connected between a set of joint connecting frames (201). The thermal compensation expansion members (203) are used to absorb the axial thermal expansion of the pipeline through their own expansion and contraction deformation, so as to avoid the joint from failing due to axial tension or compression.

5. The multilayer high-temperature wear-resistant composite pipe according to claim 4, characterized in that: A ring-shaped thermal expansion compensation (310) is connected between a set of the joint connecting brackets (201). The ring-shaped thermal expansion compensation (310) is used to compensate for the circumferential stress caused by the radial thermal expansion of the pipeline and maintain the sealing fit between the joint and the pipeline. A gear (304) is rotatably installed in the middle of the outer wall of a set of the support rods (202). A set of ring-shaped mounting rings (302) is rotatably installed in the outer wall of the pipeline body (1).

6. The multilayer high-temperature wear-resistant composite pipe according to claim 5, characterized in that: The annular mounting ring (302) has fixing rods (301) installed at both ends of its outer wall. The fixing rods (301) are installed on both sides of the inner wall of the connector frame (201). The fixing rods (301) are used to fix the annular mounting ring (302) on the connector frame (201) to ensure its stable position. The outer wall of the annular mounting ring (302) is provided with a meshing groove (303).

7. The multilayer high-temperature wear-resistant composite pipe according to claim 6, characterized in that: The meshing groove (303) is used to mesh with the gear (304) to convert the rotation of the annular mounting ring (302) driven by the thermal expansion of the pipeline into the rotational power of the gear (304). The gear (304) rotates synchronously with the support rod (202). A set of base plates (305) are installed on the outer wall of the support rod (202), and the base plates (305) are located on both sides of the outer wall of the gear (304).

8. The multilayer high-temperature wear-resistant composite pipe according to claim 7, characterized in that: The base plate (305) is used for bearing, and transmission sleeves (309) are opened and rotatably installed on both sides of the outer wall of the base plate (305). A support rod (202) is fixedly sleeved on the inner wall of the transmission sleeve (309). The transmission sleeve (309) is used to transmit the rotation of the support rod (202) to achieve stable power transmission.

9. A multilayer high-temperature wear-resistant composite pipe according to claim 8, characterized in that: A trajectory running plate (308) is installed on one side of the outer wall of the transmission sleeve (309). The trajectory running plate (308) is used to limit the movement trajectory, ensure that the thermal expansion compensation action is carried out according to the preset path, and prevent the pipeline from falling off in reverse. A set of hinged connecting rod structures (306) is installed on one side of the outer wall of the base plate (305).

10. A multilayer high-temperature wear-resistant composite pipe according to claim 9, characterized in that: A set of the articulated linkage structure (306) is used to convert the power transmitted by the gear (304) into linear displacement through the articulated rotation of the linkage, and to prevent the gear (304) from rotating in the opposite direction. A mounting plate (307) is connected to one side of the outer wall of the set of the articulated linkage structure (306). The mounting plate (307) is used for installation assistance and protection, and operates or limits itself based on its positional relationship with the trajectory running plate (308).

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