Heat pipe heat pump snow melting assembly utilizing ground source

Abstract

The utility model discloses a heat pipe and heat pump snow melting assembly utilizing a ground source, and belongs to the technical field of geothermal utilization. The underground buried pipe heat removal unit comprises a solution circulating pump, a circulating pipeline I, a U-shaped buried pipe type heat exchanger and measuring equipment I; an outlet end of the solution circulating pump is communicated with an inlet of the U-shaped buried tubular heat exchanger, the U-shaped buried tubular heat exchanger is pre-buried underground, and an outlet of the U-shaped buried tubular heat exchanger is communicated with an inlet of an evaporator heating chamber of the heat pump unit through the first measuring device. An outlet of an evaporator heating chamber of the heat pump unit is communicated with an inlet of the solution circulating pump through a first circulating pipeline. The composite pavement unit is heated by utilizing heat of a ground source, so that the temperature of the composite pavement unit is increased to the snow melting temperature, the composite pavement unit has better environmental compatibility and friendliness, resources can be reasonably utilized, and the snow melting process is free of pollution and corrosion phenomena.

Description

Technical Field

[0001] The utility model belongs to the technical field of geothermal utilization, and in particular relates to a heat pipe heat pump snow melting component utilizing ground sources. Background Art

[0002] In order to solve the problem of roads being covered with ice and snow, which aggravates the problem of road traffic safety, snow melting and de-icing technology is necessary. Many domestic researchers have proposed and optimized various snow melting and de-icing technologies. The most common snow melting and de-icing technology currently used is spreading snow melting agents, but this method has certain environmental pollution and corrosiveness, and is very expensive, so it is very critical and important to conceive a snow melting and de-icing technology that is more compatible with the environment. Utility Model Content

[0003] In order to solve the problem of environmental pollution and corrosion caused by snow melting on the road surface, the utility model provides a heat pipe heat pump snow melting component utilizing ground source.

[0004] The technical solution adopted by the utility model is:

[0005] A heat pipe heat pump snow melting component utilizing ground sources, comprising an underground pipe heat extraction unit, a heat pump unit and a composite pavement unit connected in sequence; the underground pipe heat extraction unit comprises a solution circulation pump, a circulation pipeline, a U-shaped buried tube heat exchanger and a measuring device; the outlet end of the solution circulation pump is connected to the inlet of the U-shaped buried tube heat exchanger, the U-shaped buried tube heat exchanger is pre-buried underground, the outlet of the U-shaped buried tube heat exchanger is connected to the inlet of the evaporator heating chamber of the heat pump unit through a measuring device, and the outlet of the evaporator heating chamber of the heat pump unit is connected to the inlet of the solution circulation pump through a circulation pipeline.

[0006] Compared with the prior art, the utility model has the following beneficial effects:

[0007] The utility model utilizes the heat from the ground source to heat the composite pavement unit, so that the composite pavement unit is heated to the snow melting temperature, has relatively good environmental compatibility and friendliness, can reasonably utilize resources, and the snow melting process is pollution-free and non-corrosive. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 This is a schematic diagram of the underground buried pipe heat extraction unit of the utility model;

[0010] Figure 3 It is a schematic diagram of the heat pump unit of the utility model;

[0011] Figure 4 It is a schematic diagram of the composite pavement unit of the utility model;

[0012] Among them: 11. Solution circulation pump 1; 12. Circulation pipeline 1; 13. U-shaped buried tube heat exchanger; 131. Water outlet main pipe; 132. Water inlet main pipe; 133. U-shaped tube; 14. Measuring equipment 1; 21. Working fluid circulation pump; 22. Liquid storage tank; 23. Oil separator; 24. Compressor; 25. Throttle valve; 26. Condenser; 27. Evaporator; 31. Solution circulation pump 2; 32. Circulation pipeline 3; 33. Pipe buried under the road surface; 34. Measuring equipment 3. DETAILED DESCRIPTION

[0013] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0014] like Figure 1 As shown, the present invention provides a heat pipe heat pump snow melting assembly using ground sources, including an underground buried pipe heat extraction unit, a heat pump unit unit and a composite pavement unit which are sequentially connected;

[0015] like Figure 2 As shown, the circulating working fluid of the underground buried pipe heat extraction unit adopts ethylene glycol solution with a volume fraction of 47.3%; the underground buried pipe heat extraction unit includes a solution circulation pump 11, a circulation pipeline 12, a U-shaped buried tube heat exchanger 13 and a measuring device 14; the outlet end of the solution circulation pump 11 is connected to the inlet of the U-shaped buried tube heat exchanger 13, the U-shaped buried tube heat exchanger 13 is pre-buried underground, and the outlet of the U-shaped buried tube heat exchanger 13 is connected to the inlet of the evaporator 27 heating chamber of the heat pump unit through the measuring device 14, and the outlet of the evaporator 27 heating chamber of the heat pump unit is connected to the inlet of the solution circulation pump 11 through the circulation pipeline 12.

[0016] like Figure 2 As shown, the U-shaped buried tube heat exchanger 13 includes a water inlet main pipe 132, a water outlet main pipe 131 and a plurality of U-shaped tubes 133; one end of the water inlet main pipe 132 is connected to the outlet end of the solution circulation pump 11, and the other end is closed; one end of the water outlet main pipe 131 is connected to the measuring device 14, and the other end is closed; one end of the plurality of U-shaped tubes 133 is connected to the pipe body of the water inlet main pipe 132 in sequence, and the other end of the plurality of U-shaped tubes 133 is connected to the pipe body of the water outlet main pipe 131 in sequence.

[0017] The ethylene glycol solution circulates in the underground heat extraction unit under the action of the solution circulation pump 11. First, the ethylene glycol solution flows through the U-shaped buried tube heat exchanger 13 to absorb the heat of the soil, and then enters the evaporator 27, where the heat is transferred to the heat pump unit. The cooled ethylene glycol solution enters the solution circulation pump 11 through the circulation pipeline 12, and returns to the U-shaped buried tube heat exchanger 13 to absorb heat again. The number of parallel connections of the U-shaped buried tube heat exchanger 13 is 10, the depth is 86m, the total length of the U-shaped tube 13 is 1720m, the inner diameter of the pipeline is 28mm, and the outer diameter is 32mm.

[0018] like Figure 3 As shown, the heat pump unit includes a working fluid circulation pump 21, a liquid storage tank 22, an oil separator 23, a compressor 24, a throttle valve 25, a condenser 26, an evaporator 27, a control system and a second measuring device; the evaporation chamber outlet of the evaporator 27 is connected in series with the compressor 24, the oil separator 23, the working fluid circulation pump 21, the liquid storage tank 22, the condenser 26, and the evaporation chamber inlet of the compressor 24 through a pipeline to form a second circulation pipeline, a throttle valve 25 is arranged on the pipeline between the condenser 26 and the evaporation chamber inlet of the compressor 24, the second measuring device is installed on the circulation pipeline, the control system is connected to the second measuring device, and is used to control the compressor 24, the oil separator 23, the working fluid circulation pump 21 and the condenser 26.

[0019] The circulating working fluid of the heat pump unit adopts R22. The working fluid R22 first evaporates in the evaporator 27 to absorb the heat from the underground heat extraction unit, then enters the compressor 24 to increase the temperature and pressure, further absorbs heat, then enters the condenser 26 to condense and release heat, transfers the heat to the composite pavement unit, and finally cools down and reduces the pressure through the throttle valve 25, returns to the evaporator 27 to absorb the heat of the underground heat extraction unit, and completes a cycle. A working fluid circulation pump 21 is provided to provide circulation power; a liquid storage tank 22 is used to store the working fluid and improve the system stability; an oil separator 23 is used to separate the lubricating oil in the high-pressure steam discharged from the refrigeration compressor 24 to improve the operating efficiency; the control system and the measuring device 2 record data once a minute, which contains data such as evaporator flow, condenser flow, condenser inlet temperature, condenser outlet temperature, evaporator inlet temperature, evaporator outlet temperature, high pressure, low pressure, operating frequency, superheat, return air temperature, etc.

[0020] like Figure 4 As shown, the composite pavement unit includes a solution circulation pump 2 31, a circulation pipeline 32, a buried pipe 33 under the pavement, and a measuring device 34. The solution circulation pump 2 31, the buried pipe 33 under the pavement, and the condenser 26 form a circulation pipeline 32 through pipelines, and the measuring device 34 is installed on the circulation pipeline 32.

[0021] The circulating working fluid of the composite pavement unit is ethylene glycol solution with a volume fraction of 47.3%. The ethylene glycol solution absorbs the heat of the heat pump unit in the condenser 26, enters the buried pipe 33 under the pavement to transfer the heat to the pavement for melting snow, and returns to the condenser 26 through the circulation pipeline 3 32 to complete a cycle.

[0022] The measuring device 1 14, the measuring device 2 and the measuring device 3 34 are all prior art. According to actual measurement requirements, flow measurement devices, temperature measurement devices, pressure measurement devices, frequency measurement devices, etc. can be selected. The above measurement devices can be used alone or in combination. The utility model does not limit this, and those skilled in the art can select from the prior art as needed.

[0023] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A heat pipe heat pump snow melting assembly utilizing ground source, characterized in that: The invention comprises an underground pipe heat extraction unit, a heat pump unit and a composite pavement unit which are connected in sequence; the underground pipe heat extraction unit comprises a solution circulation pump (11), a circulation pipeline (12), a U-shaped buried tube heat exchanger (13) and a measuring device (14); the outlet end of the solution circulation pump (11) is connected to the inlet end of the U-shaped buried tube heat exchanger (13); the U-shaped buried tube heat exchanger (13) is pre-buried underground; the outlet end of the U-shaped buried tube heat exchanger (13) is connected to the inlet end of the heating chamber of the evaporator (27) of the heat pump unit through the measuring device (14); the outlet end of the heating chamber of the evaporator (27) of the heat pump unit is connected to the inlet end of the solution circulation pump (11) through the circulation pipeline (12).

2. The heat pipe heat pump snow melting assembly using ground source according to claim 1, characterized in that: The U-shaped buried tube heat exchanger (13) comprises a water inlet main pipe (132), a water outlet main pipe (131) and a plurality of U-shaped tubes (133); one end of the water inlet main pipe (132) is connected to the outlet end of a solution circulation pump (11), and the other end is sealed; one end of the water outlet main pipe (131) is connected to a measuring device (14), and the other end is sealed; one end of the plurality of U-shaped tubes (133) is connected in sequence to the pipe body of the water inlet main pipe (132), and the other end of the plurality of U-shaped tubes (133) is connected in sequence to the pipe body of the water outlet main pipe (131).

3. The heat pipe heat pump snow melting assembly using ground source according to claim 2, characterized in that: The heat pump unit comprises a working fluid circulation pump (21), a liquid storage tank (22), an oil separator (23), a compressor (24), a throttle valve (25), a condenser (26), an evaporator (27), a control system and a second measuring device; the evaporation chamber outlet of the evaporator (27) is connected in series with the compressor (24), the oil separator (23), the working fluid circulation pump (21), the liquid storage tank (22), the condenser (26) and the evaporation chamber inlet of the compressor (24) through a pipeline to form a second circulation pipeline; a throttle valve (25) is arranged on the pipeline between the condenser (26) and the evaporation chamber inlet of the compressor (24); the second measuring device is installed on the circulation pipeline; the control system is connected to the second measuring device and is used to control the compressor (24), the oil separator (23), the working fluid circulation pump (21) and the condenser (26).

4. The heat pipe heat pump snow melting assembly using ground source according to claim 3, characterized in that: The composite pavement unit comprises a second solution circulation pump (31), a third circulation pipeline (32), a pipe buried under the pavement (33) and a third measuring device (34). The second solution circulation pump (31), the pipe buried under the pavement (33) and the condenser (26) form a third circulation pipeline (32) through a pipeline, and the third measuring device (34) is installed on the third circulation pipeline (32).

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