CN212253231U

CN212253231U - Multi-evaporation-section heat pipe coupling buried pipe system

Info

Publication number: CN212253231U
Application number: CN202021848228.3U
Authority: CN
Inventors: 袁艳平; 周锦志; 季文慧; 张楠
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-29
Anticipated expiration: 2030-08-27

Abstract

The utility model provides a many evaporation zone heat pipe coupling buried pipe system, including horizontal buried pipe, many evaporation zone gravity type heat pipe, the utility model discloses the structure can provide for ground source heat pump system and last effective heat. The multi-evaporation-section gravity type heat pipe is buried in the lower portion of the horizontal buried pipe, the multiple evaporation sections of the multi-evaporation-section gravity type heat pipe are distributed in soil in all directions in a radiation mode, the heat transfer rate from the soil to the horizontal buried pipe is enhanced by utilizing the efficient heat conduction capacity of the heat pipe, and the heat exchange quantity between the soil and the horizontal buried pipe is effectively improved. The utility model discloses reduce buried pipe and laid the area, had characteristics such as low cost, high efficiency.

Description

Multi-evaporation-section heat pipe coupling buried pipe system

Technical Field

The utility model relates to a high-efficient horizontal ground pipe laying system specifically can be applied to earth source heat pump system.

Background

The soil source is a renewable energy source, and has the advantages of stable heat, large heat capacity and the like. The ground source heat pump system can effectively utilize heat in soil and continuously provide heat for buildings, and is an important development direction of the current building heating.

The current buried pipe system is mainly divided into a vertical buried pipe system and a horizontal buried pipe system. The vertical buried pipe has the defects of difficult construction, high manufacturing cost and the like because the well needs to be drilled in the vertical direction. The horizontal pipe is mainly laid in shallow soil, and although the construction difficulty and cost are reduced, the horizontal pipe has the defects of large floor area, quick heat supply attenuation and the like.

In order to enhance the heat exchange capability and the utilization rate of deep soil of the horizontal buried pipe, a Chinese patent 'a horizontal buried pipe system' (CN 201310018460.2) adopts a heat pipe to enhance the heat exchange capability between the deep soil and the horizontal buried pipe, but the design only considers the heat transfer in the vertical direction and has certain limitation.

SUMMERY OF THE UTILITY MODEL

Problem and not enough to current level buried pipe system existence, the utility model provides a many evaporation zone heat pipe coupling buried pipe system. The utility model discloses combine together many evaporation zone gravity type heat pipes and horizontal ground pipe laying, utilize the heat that a plurality of heat pipe evaporation zones absorbed not equidirectional soil, realized the heat absorption and the transmission of multi-direction, the bulky soil of single heat pipe, solved the slow problem of heat transfer rate between horizontal ground pipe laying system and the remote soil.

In order to realize the purpose of the utility model, the utility model discloses technical scheme as follows:

the utility model provides a many evaporation zone heat pipe coupling buried pipe system, is including locating horizontal buried pipe 5 in soil 6, bury in many evaporation zone gravity type heat pipe 1 of horizontal buried pipe 5 below underground, and many evaporation zone gravity type heat pipe 1 is inside to be filled with the refrigerant, and many evaporation zone gravity type heat pipe 1 includes that the top of a plurality of evaporation zones 3, a plurality of evaporation zones of bottom connects common heat pipe condensation segment 2. The horizontal buried pipe 5 and the multi-evaporation-section gravity type heat pipe 1 jointly operate to transfer the heat of the soil 6 to the heat pump system.

Preferably, the multiple evaporation section gravity type heat pipe 1 is provided with a refrigerant liquid separation head 4, the tops of the multiple heat pipe evaporation sections 3 are welded with the porous joints at the bottom surface of the refrigerant liquid separation head 4 to form refrigerant channels, and the heat pipe condensation section 2 is welded with the header port on the refrigerant liquid separation head 4 to form condensation channels.

Preferably, the plurality of heat pipe evaporation sections 3 are uniformly distributed along the circumferential direction.

Preferably, the top end of the horizontal buried pipe 5 is 1m away from the upper surface of the soil 6.

The utility model discloses a theory of operation does: the evaporation sections of the heat pipes are uniformly distributed in the surrounding soil in a radiation mode, and can absorb heat from the soil in different directions. When the system works, the liquid refrigerant in the evaporation section of the heat pipe absorbs the heat of the surrounding high-temperature soil, then changes into a gaseous state, and enters the condensation section of the heat pipe after passing through the refrigerant liquid separation head along the pipeline. The gaseous refrigerant in the condensing section releases heat into the surrounding low temperature soil. At this time, the heat exchange fluid in the horizontal buried pipe continuously absorbs the heat in the heated soil and transfers the heat to the heat pump system. Therefore, heat is transferred through a plurality of parts such as high-temperature soil, a heat pipe evaporator, a heat pipe condenser, low-temperature soil, a horizontal buried pipe, a heat pump and the like, and the buried pipe absorbs the heat of the surrounding and multidirectional remote soil.

Furthermore, the number, the installation angle and the extension length of the evaporation sections of the multi-evaporation-section gravity type heat pipe can be flexibly adjusted according to actual requirements.

The heat pipe is connected with the evaporation section and the condensation section of the heat pipe respectively by adopting the refrigerant liquid separation head, so that the heat pipe can absorb the heat of the soil in different directions and different depths, and the attenuation of the heat exchange capacity between the horizontal buried pipe and the soil is delayed and weakened by utilizing the coupling of the heat pipe with the multiple evaporation sections and the buried pipe.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a many evaporation zone heat pipe coupling ground pipe laying system compares with current ground pipe laying system, and quick transmission between multi-direction, remote soil heat and the ground pipe laying is realized to usable a plurality of heat pipe evaporation zones.

2. The design of the evaporation section of the heat pipe can be flexibly adjusted according to requirements, and special requirements under different environments are met.

Drawings

Fig. 1 is a schematic structural diagram of a multiple-evaporator-section heat pipe coupling buried pipe system according to an embodiment of the present invention;

in the figure, 1 is a multi-evaporation section gravity type heat pipe, 2 is a heat pipe condensation section, 3 is an evaporation section, 4 is a refrigerant liquid separation head, 5 is a horizontal buried pipe, and 6 is soil.

Detailed Description

In order to make the technical solutions and principles of the present invention more apparent to those skilled in the art, the following detailed description is given with reference to the accompanying drawings and specific embodiments. The present invention is not limited to any particular embodiment, and is not intended to represent the best embodiment, and all such alternatives known to those skilled in the art are intended to be included within the scope of the present invention.

As shown in fig. 1, the present embodiment provides a multiple evaporation section heat pipe coupling buried pipe system, which includes a horizontal buried pipe 5 disposed in soil 6, and a multiple evaporation section gravity type heat pipe 1 buried below the horizontal buried pipe 5, wherein a refrigerant is filled in the multiple evaporation section gravity type heat pipe 1, and the multiple evaporation section gravity type heat pipe 1 includes multiple evaporation sections 3 at the bottom, and a common heat pipe condensation section 2 is connected to the tops of the multiple evaporation sections. The horizontal buried pipe 5 and the multi-evaporation-section gravity type heat pipe 1 jointly operate to transfer the heat of the soil 6 to the heat pump system.

The multi-evaporation-section gravity type heat pipe 1 is provided with a refrigerant liquid separation head 4, the tops of a plurality of heat pipe evaporation sections 3 and a porous joint at the bottom surface of the refrigerant liquid separation head 4 are welded to form a refrigerant channel, and the heat pipe condensation section 2 and a collecting pipe opening on the refrigerant liquid separation head 4 are welded to form a condensation channel.

The plurality of heat pipe evaporation sections 3 are uniformly distributed along the circumferential direction.

The top end of the horizontal buried pipe 5 is 1m away from the upper surface of the soil 6.

The evaporation sections of the heat pipes are uniformly distributed in the surrounding soil in a radiation mode, and can absorb heat from the soil in different directions. When the system works, the liquid refrigerant in the evaporation section of the heat pipe absorbs the heat of the surrounding high-temperature soil, then changes into a gaseous state, and enters the condensation section of the heat pipe along the pipeline after passing through the liquid separation head. The gaseous refrigerant in the condensing section releases heat into the surrounding low temperature soil. At this time, the heat exchange fluid in the horizontal buried pipe continuously absorbs the heat in the heated soil and transfers the heat to the heat pump system. Therefore, heat is transferred through a plurality of parts of high-temperature soil, a heat pipe evaporator, a heat pipe condenser, low-temperature soil, a horizontal buried pipe and a heat pump, and the heat of surrounding and multidirectional remote soil is absorbed by the buried pipe.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many modifications without departing from the spirit and scope of the present invention, and these modifications are all within the protection scope of the present invention.

Claims

1. The utility model provides a many evaporation zone heat pipe coupling ground pipe laying system which characterized in that: the multi-evaporation-section gravity type heat pipe comprises a horizontal buried pipe (5) arranged in soil (6) and a multi-evaporation-section gravity type heat pipe (1) buried below the horizontal buried pipe (5), wherein a refrigerant is filled in the multi-evaporation-section gravity type heat pipe (1), and the multi-evaporation-section gravity type heat pipe (1) comprises a plurality of evaporation sections (3) at the bottom and a plurality of evaporation sections, and the tops of the evaporation sections are connected with a common heat pipe condensation section (2).

2. The multiple evaporator end heat pipe coupled buried pipe system of claim 1, wherein: the multi-evaporation-section gravity type heat pipe (1) is provided with a refrigerant liquid separation head (4), the tops of a plurality of heat pipe evaporation sections (3) are welded with a porous joint on the bottom surface of the refrigerant liquid separation head (4) to form a refrigerant channel, and the heat pipe condensation section (2) is welded with a header port on the refrigerant liquid separation head (4) to form a condensation channel.

3. The multiple evaporator end heat pipe coupled buried pipe system of claim 1, wherein: the plurality of heat pipe evaporation sections (3) are uniformly distributed along the circumferential direction.

4. The multiple evaporator end heat pipe coupled buried pipe system of claim 1, wherein: the top end of the horizontal buried pipe (5) is 1m away from the upper surface of the soil (6).