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High-temperature heat pipe with inner insertion spring and spiral fin

A high-temperature heat pipe and helical fin technology is applied in the engineering application field of heat transfer, which can solve the problems of poor limit condensation effect and low heat transfer coefficient at cold start, improve economy and operation reliability, and increase heat transfer. Area, good condensation effect

Inactive Publication Date: 2020-11-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low heat transfer coefficient of existing high-temperature heat pipes, prone to cold start limit and poor condensation effect, and proposes a high-temperature heat pipe with internal springs and spiral fins

Method used

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  • High-temperature heat pipe with inner insertion spring and spiral fin
  • High-temperature heat pipe with inner insertion spring and spiral fin
  • High-temperature heat pipe with inner insertion spring and spiral fin

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, a high-temperature heat pipe with an internal spring and external spiral fins described in this embodiment, the high-temperature heat pipe includes a tube shell 1;

[0022] The shell 1 is a cylindrical structure with both ends closed;

[0023] The high-temperature heat pipe also includes a capillary core 2, an insert spring 3 and fins 4;

[0024] One end of the tube shell 1 is an evaporation section, the other end of the tube shell 1 is a condensation section, and an adiabatic section is between the evaporation section and the condensation section of the tube shell 1; wherein, the heat source acts on the evaporation section of the tube shell 1, and the tube The condensation section of shell 1 dissipates heat from the cold source;

[0025] The capillary core 2 is arranged on the inner side wall of the tube shell 1;

[0026] The insert spring 3 is a helical structure, and is arran...

specific Embodiment approach 2

[0029] Embodiment 2: This embodiment further limits the high-temperature heat pipe with an internal spring and spiral fins described in Embodiment 1. In this embodiment, the internal spring 3 is made of high-temperature ceramics.

[0030] In this embodiment, the insert spring 3 is made of high-temperature ceramics. The high-temperature ceramic material has a high melting point and has the characteristics of high-temperature resistance, which can adapt to the high temperature of the evaporation section of the shell 1. Moreover, the high-temperature ceramic material has good stability and is not easy to mix with the working fluid. The occurrence of chemical reactions or physical changes ensures that the high-temperature heat pipe has a stable heat transfer performance, so that the high-temperature heat pipe described in this embodiment has a long working life and the possibility of industrial application.

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment is to further limit the high-temperature heat pipe described in Embodiment 1, which is a high-temperature heat pipe with internal springs and spiral fins. In this embodiment, the fins 4 are in a spiral structure.

[0032] In this embodiment, the spiral structure of the fins 4 can enhance the convective heat dissipation process of the condensation section of the shell 1 and reduce the flow resistance of the fluid during the heat dissipation process.

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Abstract

The invention belongs to the technical field of heat transfer engineering application, and aims to solve the problems that an existing high-temperature heat pipe is low heat transfer coefficient, liable to generating the cold-state starting limit and poor in condensation effect. A pipe shell of the high-temperature heat pipe is a cylindrical structure with two ends closed; one end of the pipe shell is provided with an evaporation section, the other end of the pipe shell is provided with a condensation section, and a heat insulation section is arranged between the evaporation section and the condensation section of the pipe shell; a heat source acts on the evaporation section of the pipe shell, and the heat of the condensation section of the pipe shell is dissipated on a cold source; a capillary core is arranged on the inner side wall of the pipe shell; an inner insertion spring is of a spiral structure and is arranged on the inner wall of the capillary core of the evaporation section of the piper shell; and the fin is arranged on the outer wall of the condensation section of the pipe shell. The high-temperature heat pipe has the beneficial effects are that the heat transfer coefficient is good, the cold-state starting limit is not prone to occurring, and the condensation effect is good.

Description

technical field [0001] The invention belongs to the technical field of engineering application of heat transfer. Background technique [0002] As heat exchange equipment, heat exchange elements are widely used in the fields of energy, power and chemical industry; nowadays, due to the serious energy shortage, the development of efficient and compact heat exchange elements is of great significance for energy saving and cost reduction. [0003] High-temperature heat pipe is a high-efficiency heat exchange element. It transfers heat through the gas-liquid phase transition of metal working fluid, and has extremely high heat exchange capacity. It is currently one of the hot research directions in the field of heat pipes; It has broad application prospects in protection, space nuclear reactor cooling, and solar energy utilization. [0004] The existing cylindrical high-temperature heat pipe has the following disadvantages: [0005] 1. The metal working fluid is easy to form a bou...

Claims

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Application Information

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IPC IPC(8): F28D15/02F28F1/42F28F9/24F28F13/02
CPCF28D15/046F28F1/422F28F9/24F28F13/02
Inventor 王维丁亮帅永李炳熙张亚宁
Owner HARBIN INST OF TECH
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