CN221036236U

CN221036236U - Geothermal well heat exchange device

Info

Publication number: CN221036236U
Application number: CN202322696562.1U
Authority: CN
Inventors: 王勤; 刘豹; 马飞龙
Original assignee: Shandong Hengyou New Energy Technology Development Co ltd
Current assignee: Shandong Hengyou New Energy Technology Development Co ltd
Priority date: 2023-10-09
Filing date: 2023-10-09
Publication date: 2024-05-28
Anticipated expiration: 2033-10-09

Abstract

The utility model relates to a geothermal heat pump system, in particular to a geothermal well heat exchange device, which comprises an inner pipe of a buried pipe, an outer pipe of the buried pipe, a concrete layer and a water layer, wherein the inner pipe of the buried pipe is communicated with a heat exchange circulating water pump in the heat pump system, the outer pipe of the buried pipe is sleeved outside the inner pipe of the buried pipe, the outer pipe of the buried pipe and the inner pipe of the buried pipe extend into the ground, and the concrete layer is filled between the outer pipe of the buried pipe and an external soil layer and a rock layer. The utility model conveys the geothermal water through the buried pipe inner pipe, after the geothermal water completes heat exchange, the geothermal water flows into the buried pipe outer pipe, and water flows to the bottom of the buried pipe outer pipe under the influence of gravity. The whole process is simple and convenient, saves energy, is convenient for taking clean energy such as geothermal energy, and is suitable for popularization and use.

Description

Geothermal well heat exchange device

Technical Field

The utility model relates to a geothermal heat pump system, in particular to a geothermal well heat exchange device.

Background

The geothermal heat pump system is also called a ground source heat pump (Ground Source heatpump), and is a system which takes ground source energy (soil, ground water, surface water, low-temperature geothermal water and tail water) as a cooling source for refrigerating in summer and a low-temperature heat source for heating in winter of the heat pump and simultaneously realizes heating, refrigerating and domestic hot water.

The air conditioner is used for replacing the traditional modes of air conditioning, heating and heat supply by using a refrigerator and a boiler, is an effective way for improving the urban atmosphere environment and saving energy, and is a new development direction of domestic land source energy utilization.

After the geothermal water is pumped up by the water pump, the geothermal water is subjected to heat exchange and pumped into the ground by the water pump, so that the step of pumping and then pressing in is wasteful of electric energy, and the problem needs to be solved.

Disclosure of utility model

The present utility model addresses the above-described problems by providing a geothermal well heat exchange device that does not require a water pump to force water into the ground.

In order to achieve the purpose, the geothermal well heat exchange device comprises an inner pipe of a buried pipe, an outer pipe of the buried pipe, and an outer pipe of the buried pipe, wherein the inner pipe of the buried pipe is communicated with a heat exchange circulating water pump in a heat pump system, the outer pipe of the buried pipe is used for conveying water discharged by a high-temperature heat pump unit, the outer pipe of the buried pipe is sleeved outside the inner pipe of the buried pipe, the outer pipe of the buried pipe and the inner pipe of the buried pipe extend into the ground, and concrete layers are filled between the outer pipe of the buried pipe and an external soil layer and a rock stratum.

Preferably, the length of the buried pipe inner pipe is shorter than that of the buried pipe outer pipe, and the upper ends of the buried pipe inner pipe and the buried pipe outer pipe are flush.

Preferably, the length of the outer pipe of the buried pipe is between 2000m and 3000 m.

Preferably, the buried pipe inner pipe and the buried pipe outer pipe are made of stainless steel.

Preferably, the buried pipe inner pipe and the buried pipe outer pipe are respectively composed of a plurality of water conveying pipes, and the adjacent water conveying pipes are connected end to end in a sleeving manner.

Compared with the prior art, the utility model has the advantages and positive effects that,

The utility model conveys the geothermal water through the buried pipe inner pipe, after the geothermal water completes heat exchange, the geothermal water flows into the buried pipe outer pipe, and water flows to the bottom of the buried pipe outer pipe under the influence of gravity. The whole process is simple and convenient, saves energy, is convenient for taking clean energy such as geothermal energy, and is suitable for popularization and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a geothermal well heat exchange device and geothermal heat pump system;

FIG. 2 is a schematic diagram of a geothermal well heat exchange device;

FIG. 3 is a schematic diagram of a geothermal well heat exchange device from another perspective.

In the above figures, 1, a user side circulating water pump; 2. a high temperature heat pump unit; 3. a heat exchange circulating water pump; 4. a geothermal well heat exchange device; 41. a concrete layer; 42. an outer pipe of the buried pipe; 43. an inner pipe of the buried pipe; 5. rock formation.

Detailed Description

In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.

As shown in fig. 1, 2 and 3, a geothermal well heat exchange device 4 is mainly used in a geothermal heat pump system, and the geothermal heat pump system generally comprises a heat exchange circulating water pump 3 for pumping geothermal water, a high-temperature heat pump unit 2 serving as a heat exchanger, and a user side circulating water pump 1 for circulating user side water. In order to omit the step of pressing water into the ground, the utility model comprises an inner buried pipe 43 communicated with a heat exchange circulating water pump 3 in a heat pump system, and an outer buried pipe 42 for conveying water discharged by a high-temperature heat pump unit 2, wherein the outer buried pipe 42 is sleeved outside the inner buried pipe 43, the outer buried pipe 42 and the inner buried pipe 43 extend into the ground, and a concrete layer 41 is filled between the outer buried pipe 42 and an external soil layer or rock stratum 5.

From outside to inside, the concrete layer 41 serves as a fixed buried pipe outer pipe 42, the buried pipe outer pipe 42 serves to transport heat-dissipating water having completed heat exchange in the high-temperature heat pump unit 2 back to the ground so as to absorb heat again for temperature rise, and the buried pipe inner pipe 43 serves to transport high-temperature geothermal water to the ground. Alternatively, in order to guide the heat radiation water into the buried pipe outer pipe 42, a water well may be provided on the ground, and the upper end of the buried pipe outer pipe 42 may be provided at the bottom of the water well, so that the heat radiation water discharged from the high-temperature heat pump unit 2 may flow into the water well.

Further, the length of the buried pipe inner pipe 43 is shorter than that of the buried pipe outer pipe 42, and the upper ends of both are flush.

Further, the length of the buried pipe outer pipe 42 is between 2000m and 3000 m.

Further, the buried pipe inner pipe and the buried pipe outer pipe 42 are made of stainless steel.

Further, the buried pipe inner pipe and the buried pipe outer pipe 42 are respectively composed of a plurality of water pipes, and the adjacent water pipes are connected end to end in a sleeving manner.

The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.

Claims

1. The geothermal well heat exchange device is characterized by comprising an inner pipe of a buried pipe communicated with a heat exchange circulating water pump in a heat pump system and an outer pipe of the buried pipe for conveying water discharged by a high-temperature heat pump unit, wherein the outer pipe of the buried pipe is sleeved outside the inner pipe of the buried pipe, the outer pipe of the buried pipe and the inner pipe of the buried pipe extend into the ground, and concrete layers are filled between the outer pipe of the buried pipe and an external soil layer and between the outer pipe of the buried pipe and a rock stratum.

2. A geothermal well heat exchange device according to claim 1 wherein the length of the inner pipe is shorter than the length of the outer pipe and the upper ends of the two are flush.

3. A geothermal well heat exchange device according to claim 1 wherein the length of the outer pipe of the buried pipe is between 2000m and 3000 m.

4. The geothermal well heat exchange device according to claim 1, wherein the buried pipe inner pipe and the buried pipe outer pipe are made of stainless steel.

5. The geothermal well heat exchange device according to claim 1, wherein the buried pipe inner pipe and the buried pipe outer pipe are respectively composed of a plurality of water pipes, and adjacent water pipes are connected end to end in a sleeving manner.