Non-metal compensator heat preservation layer resetting device

By setting fixing pins and guide plates in the insulation layer of the non-metallic compensator, and setting guide rods on the guide plates, the problem of heat transfer gaps formed by insulation layer separation is solved, achieving better heat insulation and heat preservation effects, reducing maintenance costs and extending product life.

CN122258262APending Publication Date: 2026-06-23JIANGSU HENGFENG BELLOWS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HENGFENG BELLOWS
Filing Date
2024-12-20
Publication Date
2026-06-23

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Abstract

This invention relates to a non-metallic compensator insulation layer reset device, comprising a non-metallic skin, left and right guide cylinders, and left and right side plates respectively provided on the outer surfaces of the left and right guide cylinders. The left and right side plates are sealed together by the non-metallic skin, and an insulation layer is filled between the left and right side plates. Multiple fixing pins are provided on the outer surfaces of the left and right guide cylinders, which are inserted into the insulation layer and connected to the left and right guide cylinders respectively. A guide plate is provided at the upper end of the fixing pin, and a guide rod is provided on the guide plate. The guide rod is in close contact with the guide plate and is connected and fixed to the left and right side plates. This invention increases the friction and connection strength between the insulation layer and the left and right guide cylinders through the fixing pins, guide plates, and guide rods, enabling the insulation layer to reset in time during reciprocating motion and preventing the insulation layer from separating and forming heat transfer gaps. Even if a small gap appears between the fixing pin and the insulation layer, the guide plate can block the gap, preventing heat transfer, improving the heat insulation effect, and extending the service life of the product.
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Description

Technical Field

[0001] This invention relates to the field of non-metallic compensator technology, specifically a non-metallic compensator insulation layer reset device. Background Technology

[0002] Non-metallic compensators are typically required in high-temperature pipelines in industries such as thermal power, metallurgy, and building materials. A non-metallic compensator generally consists of a non-metallic skin, nested left and right guide tubes, with an insulation layer between the left and right guide tubes and the non-metallic skin. The insulation layer has a left side plate and a right side plate on each side, which are connected and fixed to the left and right guide tubes.

[0003] During use, the repeated thermal expansion and contraction of pipelines can cause the insulation layer of existing non-metallic compensators to separate from the guide tube or side plate, forming heat transfer gaps. This reduces the heat insulation effect of the insulation layer, and the non-metallic skin will age faster due to high temperature and corrosive gases, thus reducing its service life and increasing the maintenance and use costs of the product.

[0004] Several solutions have been proposed to address the aforementioned problem, including installing fixing pins in the insulation layer of the non-metallic compensator and adding fixing wires and mesh sleeves to the surface of the insulation layer. This would fix the position of the insulation layer on the surfaces of the left and right guide cylinders, preventing gaps from appearing in the insulation layer during the use of the non-metallic compensator. However, in actual use, the repeated reciprocating motion of the left and right guide cylinders due to thermal expansion and contraction of the pipeline causes gaps to still appear in the insulation layer around the fixing pins, thus reducing the thermal insulation effect of the insulation layer. Summary of the Invention

[0005] The purpose of this invention is to provide a non-metallic compensator insulation layer reset device. By setting a fixing pin and a guide plate, and setting a guide rod on the guide plate, the insulation layer can be reset in time during the reciprocating motion of the left and right guide cylinders, thereby avoiding the separation of the insulation layer and the formation of heat transfer gaps, and further improving the heat insulation and heat preservation effect of the insulation layer.

[0006] The objective of this invention is achieved by adopting the following technical solution:

[0007] A non-metallic compensator insulation layer reset device includes a non-metallic skin, a left guide tube, and a right guide tube. The right end of the left guide tube is nested into the left end of the right guide tube. The outer surfaces of the left and right guide tubes are respectively provided with annular left side plates and right side plates. The upper ends of the left and right side plates are connected by a non-metallic skin to form a sealed connection. The space between the left and right side plates is filled with an insulation layer made of high-temperature resistant heat insulation material. The insulation layer wraps around the outer surfaces of the left and right guide tubes.

[0008] The outer surfaces of the left and right guide tubes are respectively provided with multiple fixing pins, which are inserted into the insulation layer and connected and fixed to the left and right guide tubes respectively;

[0009] The upper end of the fixing pin is provided with a guide plate, and the upper surface of the guide plate is provided with a guide rod. The guide rod is in close contact with the guide plate and is connected and fixed to the left side plate or the right side plate.

[0010] As a preferred embodiment of the present invention, the guide plate is configured as a rectangular structure, and a pair of through holes are symmetrically provided on both sides of the horizontal axis of the guide plate, with fixing pins provided in the through holes.

[0011] As a preferred embodiment of the present invention, the fixing pin is configured as a T-shaped structure, and the lower end of the fixing pin is welded and fixed to the upper surface of the left or right guide tube.

[0012] As a preferred embodiment of the present invention, a guide rod is provided at the transverse axis position on the upper surface of the guide plate, and the guide rod can slide relative to the surface of the guide plate.

[0013] As a preferred embodiment of the present invention, one end of the guide rod is welded and fixed to the left or right side plate, and the other end of the guide rod is bent in the direction of the guide cylinder, with the bent end embedded in the insulation layer.

[0014] As a preferred embodiment of the present invention, the upper ends of the left side plate and the right side plate are respectively provided with ear plates, and the two ear plates are connected by a tie rod and nut assembly.

[0015] As a preferred embodiment of the present invention, the ear plate is connected and fixed to the non-metallic skin and the left or right side plate by bolts and nuts; an annular cover plate is provided between the ear plate and the non-metallic skin.

[0016] As a preferred embodiment of the present invention, the left end of the left guide tube is welded and fixed to the left connecting pipe, and the right end of the right guide tube is welded and fixed to the right connecting pipe.

[0017] As a preferred embodiment of the present invention, the left connecting pipe is connected to the left side plate and is configured as an integral structure, and the right connecting pipe is connected to the right side plate and is configured as an integral structure.

[0018] As a preferred embodiment of the present invention, the non-metallic skin is an integral structure formed by fluororubber or silicone rubber and glass fiber cloth; the fixing pin, guide plate and guide rod are all made of stainless steel; the insulation layer is made of aluminum silicate ceramic fiber material.

[0019] The beneficial effects of the present invention are as follows: Compared with the prior art, the present invention increases the friction and connection strength between the insulation layer and the left and right guide cylinders by setting a fixing pin and a guide plate on the insulation layer and setting a guide rod on the guide plate, so that the insulation layer can be reset in time during the reciprocating motion of the left and right guide cylinders, and avoids the insulation layer from separating and forming heat transfer gaps.

[0020] Even after long-term use, if a small gap appears between the fixing pin and the insulation layer, the guide plate can block the gap through the non-metallic compensator, thus preventing heat transfer and further improving the heat insulation effect, reducing maintenance costs, and extending the product's service life. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the surface structure of the insulation layer of the present invention.

[0023] In the diagram: 1. Insulation layer, 2. Fixing pin, 3. Guide plate, 4. Guide rod, 5. Left side plate, 6. Left guide tube, 7. Right guide tube, 8. Right side plate, 9. Ear plate, 10. Tie rod and nut assembly, 11. Non-metallic skin, 12. Cover plate, 13. Left connecting pipe, 14. Right connecting pipe. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0025] like Figure 1 and Figure 2 As shown, the non-metallic compensator insulation layer reset device includes a non-metallic skin 11, a left guide tube 6, and a right guide tube 7. The right end of the left guide tube 6 is nested into the left end of the right guide tube 7. The outer surfaces of the left guide tube 6 and the right guide tube 7 are respectively provided with annular left side plate 5 and right side plate 8. The upper ends of the left side plate 5 and the right side plate 8 are connected by a non-metallic skin 11. The space between the left side plate 5 and the right side plate 8 is filled with an insulation layer 1 made of high-temperature resistant heat insulation material. The insulation layer 1 wraps around the outer surfaces of the left guide tube 6 and the right guide tube 7.

[0026] The outer surfaces of the left guide tube 6 and the right guide tube 7 are respectively provided with multiple fixing pins 2. The fixing pins 2 are inserted into the insulation layer 1 and are connected and fixed to the left guide tube 6 and the right guide tube 7 respectively. The upper end of the fixing pin 2 is provided with a guide plate 3. The upper surface of the guide plate 3 is provided with a guide rod 4. The guide rod 4 is in close contact with the guide plate 3. The guide rods 4 on both sides are connected and fixed to the left side plate 5 and the right side plate 8 respectively.

[0027] In this embodiment, the guide plate 3 is a rectangular structure, and a pair of through holes are symmetrically arranged on both sides of the horizontal axis of the guide plate 3. Fixing pins 2 are arranged in the through holes. The fixing pins 2 are T-shaped structures, and the lower ends of the fixing pins 2 on both sides are welded and fixed to the upper surfaces of the left guide cylinder 6 and the right guide cylinder 7. A guide rod 4 is provided at the horizontal axis position on the upper surface of the guide plate 3, and the guide rod 4 can slide relative to each other on the surface of the guide plate 3.

[0028] One end of the guide rods 4 on both sides is welded and fixed to the left side plate 5 and the right side plate 8 respectively. The other end of the guide rods 4 is bent in the direction of the flow tube, and the bent end is embedded in the insulation layer 1. The upper ends of the left side plate 5 and the right side plate 8 are respectively provided with ear plates 9, and the two ear plates 9 are connected by a tie rod and nut assembly 10.

[0029] The ear plate 9 is connected and fixed to the non-metallic skin 11 and the left side plate 5 or the right side plate 8 by bolts and nuts; an annular cover plate 12 is provided between the ear plate 9 and the non-metallic skin 11.

[0030] In this embodiment, the left end of the left guide tube 6 is welded and fixed to the left pipe 13, and the right end of the right guide tube 7 is welded and fixed to the right pipe 14; the left pipe 13 is connected to the left side plate 5 and is set as an integral structure, and the right pipe 14 is connected to the right side plate 8 and is set as an integral structure.

[0031] In this embodiment, the non-metallic skin 11 is an integral structure formed by fluororubber or silicone rubber and glass fiber cloth; the fixing pin 2, guide plate 3 and guide rod 4 are all made of stainless steel; the heat insulation layer 1 is made of aluminum silicate ceramic fiber material.

[0032] The above embodiments are merely illustrative of the concept and technical features of the present invention, and are intended to enable those skilled in the art to understand the technical solutions and implementation methods of the invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent substitutions or changes made according to the technical solutions of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A non-metallic compensator insulation layer resetting device, comprising a non-metallic skin, a left guide tube, and a right guide tube, wherein the right end of the left guide tube is nested into the left end of the right guide tube, and the outer surfaces of the left and right guide tubes are respectively provided with annular left side plates and right side plates, and the upper ends of the left side plates and right side plates are connected in a sealed manner by the non-metallic skin, characterized in that: The space between the left and right side plates is filled with a heat insulation layer made of high-temperature resistant heat insulation material, and the heat insulation layer is wrapped around the outer surface of the left and right guide tubes. The outer surfaces of the left and right guide tubes are respectively provided with multiple fixing pins, which are inserted into the insulation layer and connected and fixed to the left and right guide tubes respectively; The upper end of the fixing pin is provided with a guide plate, and the upper surface of the guide plate is provided with a guide rod. The guide rod is in close contact with the guide plate and is connected and fixed to the left side plate or the right side plate.

2. The non-metallic compensator insulation and reset device according to claim 1, characterized in that: The guide plate is designed as a rectangular structure, with a pair of through holes symmetrically arranged on both sides of the horizontal axis of the guide plate, and fixing pins are installed in the through holes.

3. The non-metallic compensator insulation and reset device according to claim 2, characterized in that: The fixing pin is designed with a T-shaped structure, and the lower end of the fixing pin is welded and fixed to the upper surface of the left or right guide tube.

4. The non-metallic compensator insulation and reset device according to claim 2, characterized in that: A guide rod is provided at the horizontal axis position on the upper surface of the guide plate, and the guide rod can slide relative to the surface of the guide plate.

5. The non-metallic compensator insulation and reset device according to claim 4, characterized in that: One end of the guide rod is welded and fixed to the left or right side plate, and the other end of the guide rod is bent in the direction of the flow tube, with the bent end embedded in the insulation layer.

6. The non-metallic compensator insulation and reset device according to claim 1, characterized in that: The upper ends of the left and right side plates are respectively provided with ear plates, and the two ear plates are connected by a tie rod and nut assembly.

7. The non-metallic compensator insulation and reset device according to claim 6, characterized in that: The ear plate is connected and fixed to the non-metallic skin and the left or right side plate by bolts and nuts; an annular cover plate is provided between the ear plate and the non-metallic skin.

8. The non-metallic compensator insulation and reset device according to claim 1, characterized in that: The left end of the left guide tube is welded and fixed to the left connecting pipe, and the right end of the right guide tube is welded and fixed to the right connecting pipe.

9. The non-metallic compensator insulation and reset device according to claim 8, characterized in that: The left connecting pipe is connected to the left side plate and is an integral structure, and the right connecting pipe is connected to the right side plate and is an integral structure.

10. The non-metallic compensator insulation and reset device according to claim 1, characterized in that: The non-metallic skin is an integral structure formed by fluororubber or silicone rubber and glass fiber cloth; the fixing pin, guide plate and guide rod are all made of stainless steel; the heat insulation layer is aluminum silicate ceramic fiber material.