Sleeve compensation device for heat tracing pipeline

Abstract

The utility model relates to the field of sleeve compensation devices, and discloses a sleeve compensation device for a heat tracing pipeline, which comprises an inner cylinder, the outer wall of the inner cylinder is slidably connected with an outer cylinder, sealing filler is arranged between the inner cylinder and the outer cylinder, the upper end and the lower end of the outer cylinder are fixedly connected with material boxes, and one side of the outer wall of the inner cylinder is fixedly connected with a sealing sleeve. And an annular groove is formed in the sealing sleeve, a sealing rubber pad is fixedly connected to the bottom in the annular groove, and an annular pressing block is fixedly connected to the interior of the outer cylinder. According to the sealing device, the sealing filler falling from the material box can be extruded through the outer convex ring when the inner cylinder moves, and the sealing rubber pad in the annular groove can be extruded through the annular pressing block, so that double sealing is formed, and the sealing performance of the device is improved; damage to the pipeline and the device caused by impact can be reduced through the damping spring and the damper, and the stability of a pipeline system is improved.

Description

Technical Field

[0001] This utility model relates to the field of sleeve compensation devices, and in particular to a sleeve compensation device for heat tracing pipelines. Background Technology

[0002] Heat tracing pipelines are pipeline systems used to transport high-temperature media. Due to the transport of high-temperature media and temperature changes, heat tracing pipelines will experience thermal expansion and contraction, thermal expansion of the insulation layer, and structural deformation. Therefore, compensation devices are needed to maintain the stability and safety of the pipeline system, prevent pipeline damage and failure, and compensate for the thermal expansion and deformation of the pipeline, reduce stress concentration, and extend the service life of the pipeline.

[0003] The inner and outer cylinders of the sleeve compensation device are filled with packing to ensure the sealing of the compensation device. However, due to long-term use, the sealing packing will be worn out, causing the transport medium to leak from the inside of the compensation device, and allowing external dust or impurities to enter the compensation device.

[0004] Therefore, those skilled in the art have provided a sleeve compensation device for heat tracing pipelines to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a sleeve compensation device for heat tracing pipelines. This device can compress the sealing packing falling from the material box by means of the outer convex ring moving within the inner cylinder, and can also compress the sealing rubber pad inside the annular groove by means of the annular pressure block, thereby forming a double seal and improving the sealing performance of the device. Furthermore, the device can reduce the impact damage to the pipeline and equipment by means of shock-absorbing springs and shock absorbers, thereby improving the stability of the pipeline system.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sleeve compensation device for heat tracing pipeline includes an inner cylinder, an outer cylinder slidably connected to the outer wall of the inner cylinder, a sealing filler provided between the inner cylinder and the outer cylinder, a material box fixedly connected to the upper and lower ends of the outer wall of the outer cylinder, a sealing sleeve fixedly connected to one side of the outer wall of the inner cylinder, an annular groove opened inside the sealing sleeve, a sealing rubber gasket fixedly connected to the bottom of the annular groove, and an annular pressure block fixedly connected inside the outer cylinder.

[0008] The outer wall of the outer cylinder is fixedly connected to a connecting shell, the connecting shell is slidably connected to a movable plate, a shock absorber is fixedly connected to one side of the connecting shell, a shock absorber spring is sleeved on the outer wall of the shock absorber, and both the shock absorber spring and one side of the shock absorber are fixedly connected to the movable plate.

[0009] The above technical solutions facilitate the prevention of external substances from entering the device or leakage of transported materials through the sealing packing. The material box facilitates the replenishment of the sealing packing after it is worn out. The sealing rubber gasket facilitates the compression of the annular pressure block when it is stuck inside the annular groove, thereby forming a double seal and increasing the sealing performance of the device. The shock-absorbing springs and shock absorbers facilitate the improvement of the device's stability when subjected to external impacts, preventing damage to the device and pipelines.

[0010] Furthermore, an outer protruding ring is fixedly connected to one side of the outer wall of the inner cylinder, and an inner protruding ring is fixedly connected to one side of the inner wall of the outer cylinder;

[0011] The above technical solution facilitates the sealing packing between the inner and outer cylinders by setting the outer and inner convex rings, thus preventing packing leakage.

[0012] Furthermore, a limiting block is fixedly connected to each of the four corners of the outer wall of the outer convex ring, and a limiting groove is opened at each of the four corners of the inner wall of the outer cylinder;

[0013] The above technical solution, through the setting of the first limiting block and the first limiting groove, facilitates the limiting function of the movement of the outer convex ring.

[0014] Furthermore, the outer cylinder has flow grooves at both the upper and lower ends, and the flow grooves are connected to the lower end of the material box.

[0015] The above technical solution facilitates the flow channel setting, allowing the powdered sealing filler inside the material box to fall between the inner and outer cylinders.

[0016] Furthermore, both the outer wall of the inner cylinder and the interior of the outer cylinder are provided with a wear-resistant layer, and the material of the wear-resistant layer is a wear-resistant ceramic coating;

[0017] The above technical solution, through the setting of the wear-resistant layer, facilitates the prevention of wear on the inner and outer cylinders by the sealing packing.

[0018] Furthermore, a support plate is fixedly connected to each of the four corners of the outer wall on one side of the inner cylinder, and a movable rod is fixedly connected to the side of the support plate near the center of the inner cylinder, and one side of the movable rod is fixedly connected to the movable plate;

[0019] The above technical solution allows the movable rod to facilitate the movement of the movable plate to compress the shock-absorbing spring and shock absorber when the inner cylinder is impacted.

[0020] Furthermore, a No. 2 limiting block is fixedly connected to each of the four corners of the inner and outer walls of the movable plate, and a No. 2 limiting groove is opened at each of the four corners of both sides inside the connecting shell;

[0021] The above technical solution, through the setting of the second limiting block and the second limiting groove, facilitates the limiting function of the movement of the movable plate.

[0022] Furthermore, a support ring is fixedly connected to one side of the outer wall of the inner cylinder, and mounting holes are provided at all four corners of the outer perimeter of the support ring;

[0023] The above technical solution facilitates the connection of the inner and outer cylinders using fasteners by setting up mounting holes.

[0024] The present invention has the following beneficial effects:

[0025] 1. The present invention discloses a sleeve compensation device for heat tracing pipelines. Compared with existing sleeve compensation devices, it facilitates secondary sealing of the device through the setting of sealing packing and sealing rubber gasket. When the sealing packing is worn due to the relative movement between the inner and outer pipes, the powdered packing inside the material box falls into the space between the inner and outer pipes through the flow groove. The packing is squeezed by the movement of the outer convex ring, which fully fills the gap between the inner and outer pipes. At the same time, the annular pressure block squeezes the sealing rubber gasket inside the annular groove inward, which performs secondary sealing of the compensation device, thereby achieving a higher sealing effect.

[0026] 2. The present invention provides a sleeve compensation device for heat tracing pipelines. Compared with existing sleeve compensation devices, the installation of shock-absorbing springs and shock absorbers facilitates the increase of pipeline system stability. When the inner pipe moves, it will drive the movable rod to squeeze the movable plate, causing the shock-absorbing springs and shock absorbers to be compressed. In this way, the vibration energy generated is reduced by compressing and releasing the elasticity, preventing excessive impact force from damaging the pipeline and equipment.

[0027] 3. The sleeve compensation device for heat tracing pipeline proposed in this utility model, compared with the existing sleeve compensation device, facilitates the compression of the sealing packing falling from the material box when the inner cylinder moves by setting the outer convex ring, and facilitates the compression of the sealing rubber gasket inside the annular groove by setting the annular pressure block, thereby forming a double seal and improving the sealing performance of the device. The setting of shock-absorbing spring and shock absorber helps to reduce the impact damage to the pipeline and device, and improves the stability of the pipeline system. Attached Figure Description

[0028] Figure 1 This is an isometric view of a sleeve compensation device for heat tracing pipelines proposed in this utility model;

[0029] Figure 2 This is a schematic diagram of the inner cylinder of a sleeve compensation device for heat tracing pipelines proposed in this utility model;

[0030] Figure 3 This is a schematic diagram of the outer cylinder of a sleeve compensation device for heat tracing pipelines proposed in this utility model;

[0031] Figure 4This is a side sectional view of a sleeve compensation device for heat tracing pipelines proposed in this utility model;

[0032] Figure 5 for Figure 4 An enlarged view of point A shown in the diagram.

[0033] Legend:

[0034] 1. Inner cylinder; 2. Outer cylinder; 3. Outer convex ring; 4. Sealing packing; 5. Inner convex ring; 6. Material box;

[0035] 7. Flow channel; 8. No. 1 limit block; 9. No. 1 limit groove; 10. Sealing sleeve; 11. Annular groove;

[0036] 12. Sealing rubber gasket; 13. Annular pressure block; 14. Wear-resistant layer; 15. Connecting shell; 16. Support plate; 17. Movable rod; 18. Movable plate; 19. Shock-absorbing spring; 20. Shock absorber; 21. Second limit block; 22. Second limit groove; 23. Support ring; 24. Mounting hole. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Reference Figure 1-5 One specific embodiment provided by this utility model:

[0039] A sleeve compensation device for heat tracing pipelines includes an inner cylinder 1, an outer cylinder 2 slidably connected to the outer wall of the inner cylinder 1, an outer convex ring 3 fixedly connected to one side of the outer wall of the inner cylinder 1, and an inner convex ring 5 fixedly connected to one side of the inner wall of the outer cylinder 2. The outer and inner convex rings 3 and 5 facilitate the placement of a sealing packing 4 between the inner and outer cylinders, preventing packing leakage. A limiting block 8 is fixedly connected to each of the four corners of the outer wall of the outer convex ring 3, and a limiting groove 9 is formed at each of the four corners of the inner wall of the outer cylinder 2. The limiting blocks 8 and the limiting grooves 9 limit the movement of the outer convex ring 3. A sealing packing 4 is placed between the inner cylinder 1 and the outer cylinder 2 to prevent external substances from entering the device or leakage of transported materials. Material boxes 6 are fixedly connected to the upper and lower ends of the outer wall of the outer cylinder 2 to facilitate the placement of the sealing packing. 4. After loss, it is replenished. The upper and lower ends of the inner cylinder 2 are provided with flow grooves 7. The flow grooves 7 are connected to the lower end of the material box 6. The flow grooves 7 facilitate the powdered sealing filler 4 inside the material box 6 to fall between the inner and outer cylinders. The outer wall of the inner cylinder 1 and the inner wall of the outer cylinder 2 are provided with wear-resistant layers 14. The wear-resistant layer 14 is made of wear-resistant ceramic coating. The wear-resistant layer 14 helps to prevent the sealing filler 4 from causing wear to the inner and outer cylinders. A sealing sleeve 10 is fixedly connected to one side of the outer wall of the inner cylinder 1. An annular groove 11 is provided inside the sealing sleeve 10. A sealing rubber pad 12 is fixedly connected to the bottom of the annular groove 11. An annular pressure block 13 is fixedly connected inside the outer cylinder 2. The sealing rubber pad 12 facilitates the annular pressure block 13 to be squeezed when it is stuck inside the annular groove 11, thereby forming a double seal and increasing the sealing performance of the device.

[0040] A connecting shell 15 is fixedly connected to the outer wall of the outer cylinder 2. A movable plate 18 is slidably connected inside the connecting shell 15. Second limit blocks 21 are fixedly connected to the four corners of the inner and outer walls of the movable plate 18. Second limit grooves 22 are provided at the four corners of both sides inside the connecting shell 15. The second limit blocks 21 and second limit grooves 22 facilitate the movement of the movable plate 18. Support plates 16 are fixedly connected to the four corners of one side of the outer wall of the inner cylinder 1. A movable rod 17 is fixedly connected to the side of the support plate 16 closest to the center of the inner cylinder 1. One side of the movable plate 18 is fixedly connected to the movable rod 17. The movable rod 17 facilitates the movement of the movable plate 18 to compress the shock-absorbing spring 19 and the shock absorber 20 when the inner cylinder 1 is impacted. The shock absorber 20 is fixedly connected to one side of the inner shell 15. The shock absorber 20 is sleeved on the outer wall of the shock absorber 20. Both the shock absorber 19 and the shock absorber 20 are fixedly connected to the movable plate 18 on one side. The shock absorber 19 and the shock absorber 20 facilitate the improvement of the stability of the device when it is subjected to external impact, and prevent the device and pipeline from being damaged.

[0041] A support ring 23 is fixedly connected to one side of the outer wall of the inner cylinder 1. Mounting holes 24 are provided at all four corners of the outer side of the support ring 23. The mounting holes 24 facilitate the connection of the inner cylinder 1 and the outer cylinder 2 using fasteners.

[0042] Working principle: During use, the two sides of the compensation device are connected to the heat tracing pipe. When the inner pipe moves, it will drive the movable rod 17 to squeeze the movable plate 18, which will compress the shock-absorbing spring 19 and the shock absorber 20. This will reduce the generated vibration energy by compressing and releasing the elasticity, and prevent excessive impact force from damaging the pipe and device. When the sealing packing 4 is worn down due to the relative movement between the inner and outer pipes, the powdered packing inside the material box 6 falls into the space between the inner and outer pipes through the flow groove 7. The packing is squeezed by the movement of the outer convex ring 3, which fully fills the gap between the inner and outer pipes. At the same time, the annular pressure block 13 squeezes the sealing rubber pad 12 inside the annular groove 11 to perform secondary sealing on the compensation device, thereby achieving a higher sealing effect.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A sleeve compensation device for heat tracing pipelines, comprising an inner cylinder (1), characterized in that: The outer cylinder (2) is slidably connected to the outer wall of the inner cylinder (1). A sealing filler (4) is provided between the inner cylinder (1) and the outer cylinder (2). A material box (6) is fixedly connected to the upper and lower ends of the outer wall of the outer cylinder (2). A sealing sleeve (10) is fixedly connected to one side of the outer wall of the inner cylinder (1). An annular groove (11) is opened inside the sealing sleeve (10). A sealing rubber gasket (12) is fixedly connected to the bottom of the annular groove (11). An annular pressure block (13) is fixedly connected inside the outer cylinder (2). The outer wall of the outer cylinder (2) is fixedly connected to a connecting shell (15), and a movable plate (18) is slidably connected inside the connecting shell (15). A shock absorber (20) is fixedly connected to one side inside the connecting shell (15), and a shock-absorbing spring (19) is sleeved on the outer wall of the shock absorber (20). Both the shock-absorbing spring (19) and one side of the shock absorber (20) are fixedly connected to the movable plate (18).

2. The sleeve compensation device for heat tracing pipeline according to claim 1, characterized in that: An outer protruding ring (3) is fixedly connected to one side of the outer wall of the inner cylinder (1), and an inner protruding ring (5) is fixedly connected to one side of the inner wall of the outer cylinder (2).

3. The sleeve compensation device for heat tracing pipeline according to claim 2, characterized in that: Each of the four corners of the outer wall of the outer convex ring (3) is fixedly connected to a limiting block (8), and each of the four corners of the inner wall of the outer cylinder (2) is provided with a limiting groove (9).

4. The sleeve compensation device for heat tracing pipelines according to claim 1, characterized in that: The outer cylinder (2) has flow grooves (7) at both the upper and lower ends, and the flow grooves (7) are connected to the lower end of the material box (6).

5. A sleeve compensation device for a heat tracing pipeline according to claim 1, characterized in that: The outer wall of the inner cylinder (1) and the interior of the outer cylinder (2) are both provided with a wear-resistant layer (14), and the material of the wear-resistant layer (14) is a wear-resistant ceramic coating.

6. A sleeve compensation device for a heat tracing pipeline according to claim 1, characterized in that: Support plates (16) are fixedly connected to the four corners of the outer wall of one side of the inner cylinder (1). A movable rod (17) is fixedly connected to the side of the support plate (16) near the center of the inner cylinder (1). One side of the movable rod (17) is fixedly connected to the movable plate (18).

7. A sleeve compensation device for a heat tracing pipeline according to claim 1, characterized in that: The movable plate (18) is fixedly connected to the four corners of the inner and outer walls with a No. 2 limiting block (21), and the connecting shell (15) is provided with a No. 2 limiting groove (22) at the four corners of both sides inside.

8. A sleeve compensation device for a heat tracing pipeline according to claim 1, characterized in that: A support ring (23) is fixedly connected to one side of the outer wall of the inner cylinder (1), and mounting holes (24) are provided at all four corners of the outer periphery of the support ring (23).

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