A thermal insulation device between a high-temperature pipe and a low-temperature pipe
By setting up a combination structure of pipe clamps, vacuum cylinders and heat dissipation chambers between high-temperature and low-temperature pipelines, the influence of heat conduction from high-temperature pipelines on low-temperature pipelines is solved, achieving stability of the process performance of the medium inside the low-temperature pipeline and efficient heat insulation. The structure is simple and occupies little space.
Patent Information
- Application Number
- CN202522048412.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-23
AI Technical Summary
The heat from the high-temperature pipeline has a heat conduction effect on the adjacent low-temperature pipeline, resulting in unstable process performance of the medium inside the low-temperature pipeline. Existing insulation measures have failed to effectively solve this problem.
A pipe clamp is installed between the high-temperature pipe and the low-temperature pipe, and a vacuum cylinder is fitted on the outside of the pipe clamp. A heat dissipation cavity is formed between the vacuum cylinder and the pipe clamp. Combined with the insulation layer and the reflective film, the heat transfer is reduced by air flow and the vacuum cavity, and the structure is kept stable by the support.
It effectively reduces the heat transfer from high-temperature pipelines to low-temperature pipelines, ensuring the stability of the process characteristics of the medium inside the low-temperature pipelines. It is easy to install, occupies little space, and has good heat insulation effect.
Smart Images
Figure CN224680400U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal energy technology, and in particular to a heat insulation device between a high-temperature pipeline and a low-temperature pipeline. Background Technology
[0002] In factories, to save space, some high-temperature and low-temperature pipelines are located close to each other. However, the distance between high-temperature and low-temperature pipelines should not be too close (usually more than 500mm), because the heat from the high-temperature pipeline can conduct heat to the low-temperature pipeline, heating the medium inside and adversely affecting its process performance. Although high-temperature pipelines are insulated, these measures are usually taken to prevent excessive heat loss and rarely consider the impact on the low-temperature pipeline. When high-temperature and low-temperature pipelines are close together, the influence of the high-temperature pipeline on the process characteristics of the medium inside the low-temperature pipeline cannot be ignored. Utility Model Content
[0003] This utility model provides a heat insulation device between a high-temperature pipeline and a low-temperature pipeline. This device can effectively prevent the heat from the high-temperature pipeline from being transferred to the low-temperature pipeline, ensuring the stability of the process characteristics of the medium inside the low-temperature pipeline. The heat insulation device is easy to install and lay out, occupies little space, and has a good heat insulation effect.
[0004] The above-mentioned objective of the utility model is achieved through the following technical solution:
[0005] A heat insulation device between a high-temperature pipe and a low-temperature pipe includes a high-temperature pipe and a low-temperature pipe that are adjacent to each other. A pipe clamp is provided on the high-temperature pipe closer to the low-temperature pipe. An insulation layer is filled between the pipe clamp and the high-temperature pipe. A vacuum cylinder is sleeved on the outside of the pipe clamp. A support part is provided between the vacuum cylinder and the pipe clamp. A heat dissipation cavity communicating with the outside is formed between the vacuum cylinder and the pipe clamp.
[0006] The aforementioned heat insulation device between high-temperature and low-temperature pipelines includes a vacuum cylinder comprising an inner cylinder and an outer cylinder, which are coaxially arranged. The two ends of the outer cylinder are respectively sealed to the inner cylinder. The outer cylinder is provided with a vacuum port, and the inner and outer cylinders form a vacuum cavity.
[0007] In the aforementioned heat insulation device between the high-temperature pipeline and the low-temperature pipeline, the inner cylinder surface is evenly distributed with multiple protrusions extending towards the outer cylinder, and the ends of the protrusions are rounded and abut against the inner wall of the outer cylinder.
[0008] In the aforementioned heat insulation device between high-temperature and low-temperature pipelines, the protrusion is integrally formed with the inner cylinder, and the protrusion is a bowl-shaped protrusion.
[0009] In the aforementioned heat insulation device between high-temperature and low-temperature pipes, the inner cylinder is coated with a reflective film on the side near the pipe clamp.
[0010] In the aforementioned heat insulation device between high-temperature and low-temperature pipelines, the reflective film is a high-temperature resistant bright silver coating.
[0011] In the aforementioned heat insulation device between the high-temperature pipeline and the low-temperature pipeline, the support part is disposed on both ends of the vacuum cylinder, the support part is a support rod, one end of the support rod is fixedly connected to the pipe clamp, and the other end of the support rod is fixedly connected to the inner cylinder.
[0012] The aforementioned heat insulation device between high-temperature and low-temperature pipelines includes a pipe clamp comprising two opposing arc-shaped plates. Each arc-shaped plate has a support plate fixedly connected along its length on both sides in the width direction. The arc-shaped plate has a semi-circular cross-section, and the two opposing arc-shaped plates are connected by bolts passing through the corresponding support plates.
[0013] The aforementioned heat insulation device between high-temperature and low-temperature pipelines, wherein the insulation layer is made of composite aluminum silicate wool felt or rock wool.
[0014] The aforementioned heat insulation device between high-temperature and low-temperature pipelines includes multiple pipe clamps.
[0015] In summary, the beneficial technical effects of this utility model are as follows:
[0016] This invention features a pipe clamp installed on a high-temperature pipe near a low-temperature pipe. An insulation layer is filled between the pipe clamp and the high-temperature pipe, and a vacuum cylinder is fitted over the outside of the pipe clamp. A support portion is provided between the vacuum cylinder and the pipe clamp, forming a heat dissipation cavity that communicates with the outside environment. The insulation layer effectively reduces heat exchange between the high-temperature pipe and the low-temperature pipe. The two ends of the heat dissipation cavity are kept at a certain distance from the low-temperature pipe and are open to the outside air. The airflow within the heat dissipation cavity carries away heat from both ends, reducing the impact of heat from the cavity on the low-temperature pipe and ensuring the stability of the process characteristics of the medium within the low-temperature pipe. This insulation device is easy to install and deploy, occupies little space, and provides excellent insulation. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the high-temperature pipeline of this utility model.
[0019] The diagram shows: 1. High-temperature pipe; 2. Low-temperature pipe; 3. Pipe clamp; 31. Arc plate; 32. Support plate; 4. Insulation layer; 5. Vacuum cylinder; 51. Inner cylinder; 511. Protrusion; 52. Outer cylinder; 53. Vacuum chamber; 6. Support rod; 7. Heat dissipation chamber. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.
[0021] like Figure 1-2 As shown, a heat insulation device between a high-temperature pipe and a low-temperature pipe includes a high-temperature pipe 1 and a low-temperature pipe 2 that are adjacent to each other. A pipe clamp 3 is provided on the high-temperature pipe 1 that is close to the low-temperature pipe 2. An insulation layer 4 is filled between the pipe clamp 3 and the high-temperature pipe 1. A vacuum cylinder 5 is sleeved on the outside of the pipe clamp 3. A support part is provided between the vacuum cylinder 5 and the pipe clamp 3. A heat dissipation cavity 7 that communicates with the outside is formed between the vacuum cylinder 5 and the pipe clamp 3.
[0022] The two ends of the heat dissipation cavity 7 are in contact with the outside air, and airflow can be formed inside the heat dissipation cavity 7. The two ends of the heat dissipation cavity 7 extend to a position that is not too close to the low temperature pipe 2. The flowing air can carry away the heat inside the heat dissipation cavity 7, minimize the transfer of heat to the low temperature pipe 2, and ensure the stability of the process characteristics of the medium inside the low temperature pipe 2.
[0023] By setting up the heat dissipation cavity 7, it is also possible to prevent the temperature inside the heat dissipation cavity 7 from being too high and affecting the stress of the high-temperature pipe 1.
[0024] The insulation layer 4 can be made of composite aluminum silicate wool felt or rock wool. By setting the insulation layer 4, the heat loss from the high-temperature pipe 1 to the low-temperature pipe 2 can be effectively reduced.
[0025] The vacuum cylinder 5 in this embodiment includes an inner cylinder 51 and an outer cylinder 52. The inner cylinder 51 and the outer cylinder 52 are coaxially arranged. The two ends of the outer cylinder 52 are respectively sealed and connected to the inner cylinder 51. The outer cylinder 52 is provided with a vacuum port (not shown in the figure). The inner cylinder 51 and the outer cylinder 52 surround a vacuum cavity 53.
[0026] The vacuum chamber 53 inside the vacuum cylinder 5 is in a vacuum state. The vacuum cylinder 5 has a low thermal conductivity, which can further reduce the heat transfer from the high-temperature pipe 1 to the low-temperature pipe 2.
[0027] Both the inner cylinder 51 and the outer cylinder 52 are made of high-temperature resistant stainless steel.
[0028] The inner cylinder 51 has a plurality of protrusions 511 that extend toward the outer cylinder 52 evenly distributed on its surface. The ends of the protrusions 511 are rounded and abut against the inner wall of the outer cylinder 52.
[0029] In one embodiment, the protrusion 511 is integrally formed with the inner cylinder 51, and the protrusion 511 is a bowl-shaped protrusion.
[0030] When a vacuum pump is used to evacuate the inside of the vacuum chamber 53 through the vacuum port, the outer cylinder 52 and the inner cylinder 51 will be under pressure under atmospheric pressure. The vacuum chamber 53 between the inner cylinder 51 and the outer cylinder 52 can be kept stable by the protrusion 511 to prevent the vacuum chamber 53 from being flattened during the vacuuming process.
[0031] The contact between the protrusion 511 and the outer cylinder 52 is a point contact. Even if there is slight deformation, it can be considered as a line contact, and the heat conduction caused by the contact of the protrusion 511 can be ignored.
[0032] The vacuum port is equipped with a one-way valve or a stop valve to prevent external air from seeping into the vacuum chamber 53. Protective covers can be installed on the vacuum port and valve to prevent damage from external impacts.
[0033] In another embodiment, the inner cylinder 51 is coated with a reflective film on the side near the pipe clamp 3.
[0034] Specifically, the reflective film is a high-temperature resistant bright silver coating.
[0035] The reflective film can reflect the heat radiation generated by the high-temperature pipe 1, reducing the impact of heat dissipation from the high-temperature pipe 1 on the low-temperature pipe 2.
[0036] In this embodiment, the support parts are located at both ends of the vacuum cylinder 5. The support parts are support rods 6, one end of which is fixedly connected to the pipe clamp 3, and the other end of which is fixedly connected to the inner cylinder 51. The support rods 6 can be made of stainless steel, and their location at both ends of the vacuum cylinder 5 facilitates welding operations.
[0037] The pipe clamp 3 in this embodiment includes two opposing arc-shaped plates 31. Both sides of the arc-shaped plates 31 in the width direction are provided with support plates 32 fixed along the length direction of the arc-shaped plates 31. The cross-section of the arc-shaped plates 31 is semi-circular. The two opposing arc-shaped plates 31 are connected by bolts passing through the corresponding support plates 32.
[0038] By setting the pipe clamp 3, the insulation layer 4 can be effectively covered, thereby improving the stability of the insulation layer 4.
[0039] Depending on the orientation and angle at which the high-temperature pipe 1 and the low-temperature pipe 2 are close, multiple pipe clamps 3 can be installed. The length of a single arc plate 31 can be 3-3.5 meters.
[0040] When multiple pipe clamps 3 are required, they can be connected end to end along the length of the high-temperature pipe 1 near the low-temperature pipe 2. The length of the corresponding vacuum cylinder 5 is the sum of the lengths of the multiple pipe clamps 3, and a heat dissipation cavity 7 is formed between the multiple pipe clamps 3 and the vacuum cylinder 5.
[0041] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A heat insulation device between a high-temperature pipeline and a low-temperature pipeline, comprising a high-temperature pipeline and a low-temperature pipeline adjacent to each other, characterized in that, A pipe clamp is provided on the high-temperature pipe near the low-temperature pipe. An insulation layer is filled between the pipe clamp and the high-temperature pipe. A vacuum cylinder is sleeved on the outside of the pipe clamp. A support part is provided between the vacuum cylinder and the pipe clamp. A heat dissipation cavity communicating with the outside is formed between the vacuum cylinder and the pipe clamp.
2. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 1, characterized in that, The vacuum cylinder includes an inner cylinder and an outer cylinder, which are coaxially arranged. The two ends of the outer cylinder are respectively sealed to the inner cylinder. The outer cylinder is provided with a vacuum port. The inner cylinder and the outer cylinder form a vacuum cavity.
3. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 2, characterized in that, The inner cylinder surface has a plurality of protrusions that extend toward the outer cylinder evenly distributed, and the ends of the protrusions are rounded and abut against the inner wall of the outer cylinder.
4. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 3, characterized in that, The protrusion is integrally formed with the inner cylinder, and the protrusion is a bowl-shaped protrusion.
5. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 2, characterized in that, The inner cylinder is coated with a reflective film on the side near the pipe clamp.
6. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 5, characterized in that, The reflective film is a high-temperature resistant bright silver coating.
7. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 2, characterized in that, The support is located at both ends of the vacuum cylinder. The support is a support rod, one end of which is fixedly connected to the pipe clamp, and the other end of which is fixedly connected to the inner cylinder.
8. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 1, characterized in that, The pipe clamp includes two opposing arc-shaped plates. Each side of the arc-shaped plate in the width direction is provided with a support plate fixed along the length direction of the arc-shaped plate. The cross-section of the arc-shaped plate is semi-circular. The two opposing arc-shaped plates are connected by bolts passing through the corresponding support plates.
9. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 1, characterized in that, The insulation layer is made of composite aluminum silicate wool felt or rock wool.
10. The heat insulation device between a high-temperature pipeline and a low-temperature pipeline according to claim 1, characterized in that, The pipe clamps include multiple types.