CN110173932A - A kind of mine waste heat soil source hybrid current limiter - Google Patents

Abstract

The invention discloses a mine waste heat soil source hybrid heat pump system, which comprises a surface mine waste heat utilization circuit, a buried pipe heat exchanger and a deep well waste heat collection circuit, and the deep well waste heat collection circuit is connected with the buried pipe heat exchanger and the deep well waste heat is collected The loop is used to recover underground waste heat and transfer the underground waste heat to the buried tube heat exchanger, which is connected to the surface mine waste heat utilization circuit and used to transfer the energy absorbed and stored by the buried tube heat exchanger For the surface mine waste heat utilization circuit, the deep mine waste heat collection circuit includes a high and low pressure heat exchanger and a mine ventilation system. The invention utilizes the heat pump technology to store the low-grade thermal energy under the mine on the surface and extract it when needed, which reduces the environmental pollution caused by long-term heating in winter in the traditional mining area in the cold northern region of my country and the consumption of large-scale non-renewable resources. It saves the energy consumption for cooling the working face in the traditional mine, and has good economic benefits.

Description

A soil source hybrid heat pump system for mine waste heat

technical field

The invention belongs to the technical field of mine waste heat utilization, in particular to a mine waste heat soil source hybrid heat pump system.

Background technique

Most of my country's mining areas are located in the northern region, where the climate is cold. Heating is needed in winter and cooling is needed in summer, and the heating period is nearly half a year. The heat load in winter is relatively large, and due to the nature of work in mining areas, the hot water load is relatively larger than that of ordinary buildings. The traditional system uses coal, gas or electricity. Heating and hot water supply consume a lot of energy and are expensive.

In the process of coal mining, a large amount of waste heat will be generated in the mining area. In order to ensure the environment of the mining area, the traditional mining area uses the mine ventilation system to blow the waste heat generated in the mining area out of the mining area, so that this part of the waste heat resource is not used, and it is lost to the external environment. , not only caused a waste of resources, but also caused serious heat pollution, dust pollution and noise pollution. The current mine waste heat utilization directly collects underground waste heat and exchanges heat with the ground heat load. The heat in the mining area is still wasted in summer, and it can only be used for heating in winter, and cannot be adjusted in time as the surface temperature changes.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and to provide a mine waste heat soil source hybrid heat pump system, which uses heat pump technology to ensure that the working environment temperature of the stope working face is suitable, and the low-grade mine underground The thermal energy is stored on the surface and extracted when needed, which reduces the environmental pollution caused by long-term heating in winter in traditional mining areas in the cold northern regions of my country and the large-scale consumption of non-renewable resources.

In order to achieve the above object, the technical solution adopted by the present invention is: a mine waste heat soil source hybrid heat pump system, which is characterized in that it includes a surface mine waste heat utilization circuit, a buried pipe heat exchanger and a deep well waste heat collection circuit. The waste heat collection circuit is connected to the buried pipe heat exchanger, and the deep well waste heat collection circuit is used to recover underground waste heat and transfer the underground waste heat to the buried pipe heat exchanger. The buried pipe heat exchanger and the surface mine waste heat utilization circuit Connected and used to transfer the energy absorbed and stored by the buried tube heat exchanger to the surface mine waste heat utilization circuit, the deep well waste heat collection circuit includes high and low pressure heat exchangers and mine ventilation systems, the high and low pressure heat exchangers It is installed at the end of the mine ventilation system and is used to absorb the underground waste heat brought by the air in the mine ventilation system from the stope area. The cold fluid inlet of the high and low pressure heat exchanger is connected with the first fluid outlet of the buried pipe heat exchanger The cold fluid outlet of the high and low pressure heat exchanger is connected with the first fluid inlet of the buried tube heat exchanger, and the second fluid inlet and outlet of the buried tube heat exchanger are connected with the surface mine waste heat utilization circuit Pass.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: a fifth circulation pump and a sixth valve are arranged between the second fluid outlet of the buried pipe heat exchanger and the surface mine waste heat utilization circuit and a three-way reversing valve, the outlet of the fifth circulating pump communicates with one end of the sixth valve, one end of the sixth valve communicates with the first port of the three-way reversing valve, and the three-way reversing Both the second port and the third port of the valve are connected with the surface mine waste heat utilization circuit, and the inlet of the fifth circulation pump is connected with the second fluid outlet of the buried pipe heat exchanger.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that a first valve and a second A circulation pump, one end of the first valve communicates with the first fluid outlet of the buried pipe heat exchanger through a pipeline, and the other end of the first valve communicates with the inlet of the first circulation pump, and the first circulation The outlet of the pump communicates with the cold fluid inlet of the high and low pressure heat exchanger.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: the surface mine waste heat utilization circuit includes a heat pump unit and a refrigeration circuit, and the heat pump unit includes a heat pump unit compressor, a heat pump unit evaporator, and a heat pump unit throttle mechanism and the condenser of the heat pump unit, the outlet of the compressor of the heat pump unit is connected with the inlet of the working medium of the evaporator of the heat pump unit, the outlet of the working medium of the evaporator of the heat pump unit is connected with the inlet of the throttling mechanism of the heat pump unit, and the The outlet of the throttling mechanism of the heat pump unit is connected with the inlet of the working medium of the condenser of the heat pump unit, and the outlet of the working medium of the condenser of the heat pump unit is connected with the inlet of the compressor of the heat pump unit; circuit evaporator, refrigeration circuit throttling device, refrigeration circuit condenser and cooling load, the outlet of the refrigeration circuit compressor is connected with the working medium inlet of the refrigeration circuit evaporator, and the working medium outlet of the refrigeration circuit evaporator is connected with the refrigeration circuit evaporator The inlet of the circuit throttling device is connected, the outlet of the refrigeration circuit throttling device is connected with the working medium inlet of the refrigeration circuit condenser, and the working medium outlet of the refrigeration circuit condenser is connected with the inlet of the refrigeration circuit compressor, One end of the cooling load is connected to the load medium inlet of the refrigeration circuit evaporator, and the other end of the cooling load is connected to the load medium outlet of the refrigeration circuit evaporator; the load medium outlet of the heat pump unit evaporator is connected to the refrigeration circuit The load medium inlet of the condenser is connected, the load medium inlet of the evaporator of the heat pump unit is connected with the load medium outlet of the refrigeration circuit condenser, and the load medium outlet of the heat pump unit condenser is connected to the second buried tube heat exchanger. The fluid inlet is connected, and the load medium inlet of the condenser of the heat pump unit is connected with the second fluid outlet of the buried tube heat exchanger.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: the surface mine waste heat utilization circuit also includes a heating circuit, and the heating circuit includes a second circulation pump, a second valve, a heat load and a third valve, The outlet of the second circulation pump communicates with one end of the second valve, the other end of the second valve communicates with one end of the heat load, and the other end of the heat load communicates with one end of the third valve, so The other end of the third valve is connected to the load medium inlet of the condenser of the heat pump unit, the load medium outlet of the condenser of the heat pump unit is connected to the inlet of the second circulation pump, and the load medium outlet of the evaporator of the heat pump unit is connected to The second fluid inlet of the buried tube heat exchanger is connected, and the load medium inlet of the evaporator of the heat pump unit is connected with the second fluid outlet of the buried tube heat exchanger.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: the surface mine waste heat utilization circuit also includes a domestic hot water circuit, and the domestic hot water circuit includes a hot water heating load, a third circulating pump and a fourth valve, the outlet of the third circulation pump is connected with one end of the fourth valve, the other end of the fourth valve is connected with the load medium inlet of the heat pump unit condenser, and the load medium outlet of the heat pump unit condenser is connected with One end of the hot water heating load is connected, the other end of the hot water heating load is connected to the inlet of the third circulation pump, and the load medium outlet of the heat pump unit evaporator is connected to the second fluid inlet of the buried pipe heat exchanger The load medium inlet of the evaporator of the heat pump unit is connected with the second fluid outlet of the buried pipe heat exchanger.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: the heat pump unit also includes a cooling tower, the outlet of the cooling tower is connected to the load medium inlet of the condenser of the heat pump unit, and the condenser of the heat pump unit The outlet of the load medium is connected with the water inlet of the cooling tower.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: a fourth circulating pump and a fifth valve are arranged between the load medium outlet of the condenser of the heat pump unit and the water inlet of the cooling tower, and the fourth circulating pump The outlet of the pump communicates with one end of the fifth valve, the other end of the fifth valve communicates with the water inlet of the cooling tower, and the inlet of the fourth circulating pump communicates with the load medium outlet of the condenser of the heat pump unit.

The above-mentioned mine waste heat soil source hybrid heat pump system is characterized in that: a sixth circulating pump and a seventh valve are arranged between one end of the cold load and the load medium inlet of the refrigeration circuit evaporator, and the sixth The outlet of the circulation pump communicates with one end of the seventh valve, the other end of the seventh valve communicates with the load medium inlet of the refrigeration circuit evaporator, and one end of the cooling load communicates with the inlet of the sixth circulation pump.

Compared with the prior art, the present invention has the following advantages:

1. In the present invention, a buried tube heat exchanger is installed between the surface mine waste heat utilization circuit and the deep well waste heat collection circuit, which can store the low-grade heat energy under the mine on the surface, and then extract it when needed, which reduces the energy consumption in the cold regions of northern my country. Environmental pollution caused by long-term heating in winter in traditional mining areas and large-scale consumption of non-renewable resources.

2. The present invention can effectively reduce the temperature of the deep well working face to the standard working temperature, improve the working environment, add a hot water supply system, improve the quality of life, and reduce the extra cost of improving the miner's living and working environment. Great economic benefits.

3. The system of the present invention improves the utilization rate of heat by utilizing waste heat from deep wells. At the same time, the system can produce hot water in both winter and summer and can be used for the adjustment of building indoor terminals. It can be used for heating in heating seasons and can be used for cooling in non-heating seasons.

4. The system of the present invention solves the problems of heat loss and low utilization rate in traditional mining areas and the shortage of heat in the heating season in severe cold areas, makes full use of waste heat, saves non-renewable resources, and embodies the air-conditioning concept of sustainable development.

The present invention will be described in further detail below with reference to the accompanying drawings and examples.

Description of drawings

Fig. 1 is a schematic diagram of the system connection of the mine waste heat soil source hybrid heat pump system of the present invention.

Fig. 2 is a schematic diagram of the connection between the heat pump unit and the refrigeration circuit of the present invention.

Fig. 3 is a schematic diagram of the connection between the heat pump unit and the heating circuit of the present invention.

Fig. 4 is a schematic diagram of the connection between the heat pump unit and the domestic hot water circuit of the present invention.

Fig. 5 is a schematic diagram of the connection between the heat pump unit and the buried pipe heat exchanger of the present invention.

Explanation of reference signs:

1—buried pipe heat exchanger; 1-1—fifth circulation pump; 1-2—sixth valve;

1-3—three-way reversing valve; 2—high and low pressure heat exchanger; 3—mine ventilation system;

3-1—fan 3-2—stope area 4—first valve;

5—first circulation pump; 6—heat pump unit;

6-1—heat pump unit compressor; 6-2—heat pump unit evaporator;

6-3—throttle mechanism of heat pump unit; 6-4—condenser of heat pump unit;

6-5—cooling tower; 6-6—the fourth circulating pump; 6-7—the fifth valve;

7—refrigeration circuit; 7-1—refrigeration circuit compressor;

7-2—refrigeration circuit evaporator; 7-3—refrigeration circuit throttling device;

7-4—refrigeration circuit condenser; 7-5—cooling load;

7-6—the sixth circulating pump; 7-7—the seventh valve; 8—the heating circuit;

8-1—second circulating pump; 8-2—second valve; 8-3—heat load;

8-4—third valve; 9—domestic hot water circuit; 9-1—hot water heating load;

9-2—the third circulation pump; 9-3—the fourth valve.

Detailed ways

As shown in Figure 1, the present invention includes a surface mine waste heat utilization circuit, a buried pipe heat exchanger 1 and a deep well waste heat collection circuit, the deep well waste heat collection circuit is connected to the buried pipe heat exchanger 1 and the deep well waste heat collection circuit is used for Recover the underground waste heat and transfer the underground waste heat to the buried tube heat exchanger 1, the buried tube heat exchanger 1 is connected with the surface mine waste heat utilization circuit and used to absorb and store the buried tube heat exchanger 1 The energy is transferred to the surface mine waste heat utilization circuit, and the deep mine waste heat collection circuit includes a high and low pressure heat exchanger 2 and a mine ventilation system 3. The high and low pressure heat exchanger 2 is arranged at the end of the mine ventilation system 3 and is used to absorb The underground waste heat brought by the air from the stope area in the mine ventilation system 3, the cold fluid inlet of the high and low pressure heat exchanger 2 is connected with the first fluid outlet of the buried pipe heat exchanger 1, and the high and low pressure heat exchanger The cold fluid outlet of the device 2 is connected with the first fluid inlet of the buried pipe heat exchanger 1, and the second fluid inlet and outlet of the buried pipe heat exchanger 1 are both connected with the surface mine waste heat utilization circuit.

Mine ventilation system 3 is mainly used in the present embodiment to provide enough fresh air and regulate underground climate for downhole, and it blows fresh air to stope area 3-2 by blower fan 3-1, and air will stope area 3-2 The generated waste heat is carried along the mine ventilation system 3 to the high and low pressure heat exchanger 2 installed at the end of the mine ventilation system 3. Heat exchange, the cold fluid of the high and low pressure heat exchanger 2 transfers the absorbed heat to the buried tube heat exchanger 1, and the buried tube heat exchanger 1 can store the low-grade heat energy in the mine on the surface and extract it when needed It is supplied to the surface mine waste heat utilization circuit. It makes full use of mine waste heat resources, reduces the environmental pollution caused by long-term heating in winter in traditional mining areas located in the cold northern regions of my country, and reduces the consumption of large-scale non-renewable resources.

As shown in Figures 1 and 5, a fifth circulating pump 1-1, a sixth valve 1-2 and Three-way reversing valve 1-3, the outlet of the fifth circulation pump 1-1 is connected to one end of the sixth valve 1-2, and one end of the sixth valve 1-2 is connected to the three-way reversing valve 1- 3 connected to the first port, the second port and the third port of the three-way reversing valve 1-3 are connected to the surface mine waste heat utilization circuit, and the inlet of the fifth circulating pump 1-1 is connected to the buried The second fluid outlets of the tube heat exchanger 1 are connected.

As shown in Figure 1, a first valve 4 and a first circulation pump 5 are also arranged between the cold fluid inlet of the high and low pressure heat exchanger 2 and the first fluid outlet of the buried pipe heat exchanger 1, the first One end of a valve 4 communicates with the first fluid outlet of the buried pipe heat exchanger 1 through a pipeline, and the other end of the first valve 4 communicates with the inlet of the first circulating pump 5, and the first circulating pump 5 The outlet communicates with the cold fluid inlet of the high and low pressure heat exchanger 2 .

As shown in Figures 1 to 5, the surface mine waste heat utilization circuit includes a heat pump unit 6 and a refrigeration circuit 7, and the heat pump unit 6 includes a heat pump unit compressor 6-1, a heat pump unit evaporator 6-2, a heat pump unit section flow mechanism 6-3 and heat pump unit condenser 6-4, the heat pump unit throttling mechanism 6-3 is an expansion valve, the outlet of the heat pump unit compressor 6-1 is connected to the working medium of the heat pump unit evaporator 6-2 The inlet is connected, the working medium outlet of the heat pump unit evaporator 6-2 is connected with the inlet of the heat pump unit throttling mechanism 6-3, and the outlet of the heat pump unit throttling mechanism 6-3 is connected to the heat pump unit condenser 6- 4 is connected to the working medium inlet, and the working medium outlet of the heat pump unit condenser 6-4 is connected to the inlet of the heat pump unit compressor 6-1;

The refrigeration circuit 7 includes a refrigeration circuit compressor 7-1, a refrigeration circuit evaporator 7-2, a refrigeration circuit throttling device 7-3, a refrigeration circuit condenser 7-4, and a cooling load 7-5. The flow device 7-3 is an expansion valve, the outlet of the refrigeration circuit compressor 7-1 is connected with the working medium inlet of the refrigeration circuit evaporator 7-2, and the working medium outlet of the refrigeration circuit evaporator 7-2 is connected with the refrigeration circuit evaporator 7-2. The inlet of the circuit throttling device 7-3 is connected, and the outlet of the refrigeration circuit throttling device 7-3 is connected with the working medium inlet of the refrigeration circuit condenser 7-4, and the working medium of the refrigeration circuit condenser 7-4 The medium outlet is connected to the inlet of the refrigeration circuit compressor 7-1, one end of the cooling load 7-5 is connected to the load medium inlet of the refrigeration circuit evaporator 6-2, and the other end of the cooling load 7-5 is connected to the The load medium outlet of the refrigeration circuit evaporator 6-2 is connected;

The load medium outlet of the heat pump unit evaporator 6-2 is connected to the load medium inlet of the refrigeration circuit condenser 7-4, and the load medium inlet of the heat pump unit evaporator 6-2 is connected to the load medium inlet of the refrigeration circuit condenser 7-4. The load medium outlet is connected, the load medium outlet of the heat pump unit condenser 6-4 is connected to the second fluid inlet of the buried tube heat exchanger 1, and the load medium inlet of the heat pump unit condenser 6-4 is connected to the buried pipe heat exchanger 1. The second fluid outlets of the tube heat exchanger 1 are connected.

As shown in Figures 1 and 3, the surface mine waste heat utilization circuit also includes a heating circuit 8, and the heating circuit 8 includes a second circulation pump 8-1, a second valve 8-2, a heat load 8-3 and a second circulation pump 8-1. Three valves 8-4, the outlet of the second circulating pump 8-1 communicates with one end of the second valve 8-2, and the other end of the second valve 8-2 communicates with one end of the heat load 8-3 , the other end of the heat load 8-3 communicates with one end of the third valve 8-4, and the other end of the third valve 8-4 communicates with the load medium inlet of the heat pump unit condenser 6-4, so The load medium outlet of the heat pump unit condenser 6-4 is connected to the inlet of the second circulating pump 8-1, and the load medium outlet of the heat pump unit evaporator 6-2 is connected to the second fluid inlet of the buried pipe heat exchanger 1 The load medium inlet of the evaporator 6-2 of the heat pump unit is connected with the second fluid outlet of the buried pipe heat exchanger 1 .

As shown in Figures 1 and 4, the surface mine waste heat utilization circuit also includes a domestic hot water circuit 9, and the domestic hot water circuit 9 includes a hot water heating load 9-1, a third circulating pump 9-2 and a fourth Valve 9-3, the outlet of the third circulation pump 9-2 is connected with one end of the fourth valve 9-3, and the other end of the fourth valve 9-3 is connected with the load medium of the condenser 6-4 of the heat pump unit The inlet is connected, the load medium outlet of the condenser 6-4 of the heat pump unit is connected with one end of the hot water heating load 9-1, and the other end of the hot water heating load 9-1 is connected with the third circulating pump 9-2 The inlet of the heat pump unit evaporator 6-2 is connected to the second fluid inlet of the buried pipe heat exchanger 1, and the load medium inlet of the heat pump unit evaporator 6-2 is connected to the buried pipe heat exchanger 1. The second fluid outlets of the heat exchanger 1 are connected.

As shown in Figure 1, the heat pump unit 6 also includes a cooling tower 6-5, the water outlet of the cooling tower 6-5 is connected to the load medium inlet of the heat pump unit condenser 6-4, and the heat pump unit condenser 6 The load medium outlet of -4 communicates with the water inlet of cooling tower 6-5.

As shown in Figure 1, a fourth circulation pump 6-6 and a fifth valve 6-7 are arranged between the load medium outlet of the condenser 6-4 of the heat pump unit and the water inlet of the cooling tower 6-5. The outlet of the circulation pump 6-6 communicates with one end of the fifth valve 6-7, the other end of the fifth valve 6-7 communicates with the water inlet of the cooling tower 6-5, and the fourth circulation pump 6-6 The inlet of is connected with the load medium outlet of the condenser 6-4 of the heat pump unit.

As shown in Figure 1, a sixth circulating pump 7-6 and a seventh valve 7-7 are also arranged between one end of the cooling load 7-5 and the load medium inlet of the refrigeration circuit evaporator 6-2. The outlet of the six-circulation pump 7-6 communicates with one end of the seventh valve 7-7, and the other end of the seventh valve 7-7 communicates with the load medium inlet of the refrigeration circuit evaporator 6-2, and the cooling load One end of 7-5 communicates with the inlet of the sixth circulation pump 7-6.

The working principle of the present invention is: the system provides refrigeration for the surface mine waste heat utilization circuit: open the seventh valve 7-7 and the sixth circulation pump 7-6, the cooling load 7-5 and the refrigeration circuit evaporator 7-2 The load medium end of the refrigeration circuit is connected to form the first closed loop, and the working medium ends of the refrigeration circuit compressor 7-1, the refrigeration circuit evaporator 7-2, the refrigeration circuit throttling device 7-3 and the refrigeration circuit condenser 7-4 are connected in sequence A second closed loop is formed, the load medium end of the refrigeration circuit condenser 7-4 is connected to the load medium end of the heat pump unit evaporator 6-2 to form a third closed loop, and the first closed loop sends the cooling load 7-5 out The heat is transferred to the second closed loop, and the second closed loop transfers the heat to the third closed loop, and the third closed loop transfers this heat to the buried pipe heat exchanger 1 through the heat pump unit 6, The buried tube heat exchanger 1 stores this part of heat in the surface soil.

This system is the working process of heat supply for the surface mine waste heat utilization circuit: open the first valve 4 and the first circulation pump 5, and the high and low pressure heat exchanger 2 transfers the heat absorbed from the mine ventilation system 3 to the buried pipe heat exchanger 1 , the buried pipe heat exchanger 1 transfers this part of heat to the heat pump unit 6, and the heat pump unit 6 converts this part of heat and transfers it to the hot water heating load 9-1 and/or the heat load 8-3.

In the non-heating season, there may be a situation where the cooling load of the mine is large. At this time, the heat dissipation of the cooling system exceeds the heat storage capacity of the surface soil, and the cooling tower 6-5 can be turned on to assist heat dissipation to ensure the safe and efficient operation of the heat pump unit 6. At this time, start the cooling tower 6-5 to assist heat dissipation work process: open the fourth circulation pump 6-6 and the fifth valve 6-7, so that the start cooling tower 6-5 can perform heat exchange with the condensation side of the heat pump unit to achieve the cooling effect, And adjust the opening degrees of the fifth valve 6-7 and the sixth valve 1-2 to adjust the flow of heat storage and cooling tower 6-5 auxiliary heat dissipation.

During the heating season, the working process of the deep underground system is the same as that of the non-heating season. On the ground, the second circulation pump 8-1, the second valve 8-2 and the third valve 8-4 are turned on to form a loop to exchange heat with the condensation side of the heat pump unit 6 to supply heat to the residential area. Turn on the third circulating pump 9-2 and the fourth valve 9-3 to form a loop, exchange heat with the condenser side of the heat pump unit 6, and use it to supply hot water to residential areas. Turn on the fifth circulating pump 1-1, the sixth valve 1-2 and the three-way reversing valve 1-3, so that the evaporation side of the heat pump unit 6 and the buried pipe heat exchanger 1 form a loop to extract non-heating heat stored on the surface of the earth. The remaining valves and pumps are closed. So far, the heat stored on the surface in the non-heating season is transferred to the residential area through the above-mentioned loop.

In the heating season, the cooling load of the deep well decreases. At this time, the heat pump system mainly meets the domestic hot water and domestic heating needs of the residences in the mining area. According to the heating load and hot water load of the residential area in the mining area, all or part of the heat in the deep well ventilation loop is used for the ground heating system through the heat pump unit, and the buried pipe heat exchanger extracts the heat stored on the surface during the non-heating season. The heat implements a heat pump cycle for heating the dwelling in winter.

The refrigerant in the evaporator of the heat pump unit is ethylene glycol aqueous solution, the circulating medium on the side of the condenser is water, and the heat pump unit is installed on the ground. Through the switching of the valve, the system can realize the functions of underground cooling all the year round, surface cooling in summer, heating in winter, and hot water supply all the year round.

Using heat pump technology, the low-grade thermal energy under the mine is stored on the surface and extracted when needed. It reduces the environmental pollution caused by long-term heating in winter and the large-scale consumption of non-renewable resources in traditional mining areas in the cold northern regions of my country. During the use of this system, the operating cost of the system is far lower than the fuel cost of using traditional heating equipment. And equipment maintenance and repair costs, greatly saving the cost of heating, at the same time, this system can effectively reduce the temperature of the deep well working face to the standard working temperature, improve the working environment, join the hot water supply system, improve the quality of life, reduce The additional cost of improving the living and working environment of the miners has great economic benefits. This system improves the problem of high-temperature heat damage and heat recycling in traditional mining areas, makes full use of geothermal energy, and embodies the sustainable development of the air-conditioning concept.

The above are only preferred embodiments of the present invention, and do not limit the present invention in any way. Any simple modifications, changes and equivalent structural transformations made to the above embodiments according to the technical essence of the present invention still belong to the technology of the present invention. within the scope of protection of the scheme.

Claims (9)

1. A mine waste heat soil source hybrid heat pump system, characterized in that it includes a surface mine waste heat utilization circuit, a buried pipe heat exchanger (1) and a deep well waste heat collection circuit, and the deep well waste heat collection circuit is exchanged with the buried pipe The heat exchanger (1) is connected and the deep well waste heat collection circuit is used to recover the underground waste heat and transfer the underground waste heat to the buried pipe heat exchanger (1), and the buried pipe heat exchanger (1) and the surface mine waste heat utilization The circuit is connected and used to transfer the energy absorbed and stored by the buried tube heat exchanger (1) to the surface mine waste heat utilization circuit, and the deep well waste heat collection circuit includes high and low pressure heat exchangers (2) and mine ventilation system ( 3), the high and low pressure heat exchanger (2) is arranged at the end of the mine ventilation system (3) and is used to absorb the underground waste heat brought by the air in the mine ventilation system (3) from the stope area, the high and low pressure heat exchanger The cold fluid inlet of the heat exchanger (2) communicates with the first fluid outlet of the buried pipe heat exchanger (1), and the cold fluid outlet of the high and low pressure heat exchanger (2) communicates with the buried pipe heat exchanger (1) The first fluid inlet of the buried pipe heat exchanger (1) is connected with the first fluid inlet, and the second fluid inlet and outlet of the buried tube heat exchanger (1) are both connected with the surface mine waste heat utilization circuit. 2. A mine waste heat soil source hybrid heat pump system according to claim 1, characterized in that: between the second fluid outlet of the buried tube heat exchanger (1) and the surface mine waste heat utilization circuit A fifth circulation pump (1-1), a sixth valve (1-2) and a three-way reversing valve (1-3) are provided, and the outlet of the fifth circulation pump (1-1) is connected to the sixth valve ( One end of 1-2) is connected, and one end of the sixth valve (1-2) is connected with the first port of the three-way reversing valve (1-3), and the three-way reversing valve (1-3 ) of the second port and the third port are in communication with the surface mine waste heat utilization circuit, and the inlet of the fifth circulating pump (1-1) is in communication with the second fluid outlet of the buried pipe heat exchanger (1). 3. A mine waste heat soil source hybrid heat pump system according to claim 1, characterized in that: the cold fluid inlet of the high and low pressure heat exchanger (2) is connected to the second inlet of the buried pipe heat exchanger (1). A first valve (4) and a first circulation pump (5) are also arranged between a fluid outlet, and one end of the first valve (4) passes through the pipeline and the first fluid of the buried pipe heat exchanger (1). The outlet is connected, the other end of the first valve (4) is connected with the inlet of the first circulating pump (5), and the outlet of the first circulating pump (5) is connected with the cooling port of the high and low pressure heat exchanger (2). The fluid inlets are connected. 4. A mine waste heat soil source hybrid heat pump system according to claim 1, characterized in that: the surface mine waste heat utilization circuit includes a heat pump unit (6) and a refrigeration circuit (7), and the heat pump unit (6 ) includes a heat pump unit compressor (6-1), a heat pump unit evaporator (6-2), a heat pump unit throttling mechanism (6-3) and a heat pump unit condenser (6-4), and the heat pump unit compressor ( The outlet of 6-1) is connected with the working medium inlet of the heat pump unit evaporator (6-2), and the working medium outlet of the heat pump unit evaporator (6-2) is connected with the heat pump unit throttling mechanism (6-3). The inlet is connected, the outlet of the throttling mechanism (6-3) of the heat pump unit is connected with the inlet of the working medium of the condenser (6-4) of the heat pump unit, and the outlet of the working medium of the condenser (6-4) of the heat pump unit is It communicates with the inlet of the heat pump unit compressor (6-1); the refrigeration circuit (7) includes a refrigeration circuit compressor (7-1), a refrigeration circuit evaporator (7-2), a refrigeration circuit throttling device (7 -3), refrigeration circuit condenser (7-4) and cooling load (7-5), the outlet of described refrigeration circuit compressor (7-1) is connected with the working medium inlet of refrigeration circuit evaporator (7-2) The working medium outlet of the refrigerating circuit evaporator (7-2) is connected with the inlet of the refrigerating circuit throttling device (7-3), and the outlet of the refrigerating circuit throttling device (7-3) is connected with the refrigerating circuit The working medium inlet of the condenser (7-4) is connected, the working medium outlet of the refrigeration circuit condenser (7-4) is connected with the inlet of the refrigeration circuit compressor (7-1), and the cooling load (7 One end of -5) communicates with the load medium inlet of the refrigeration circuit evaporator (6-2), and the other end of the cooling load (7-5) communicates with the load medium outlet of the refrigeration circuit evaporator (6-2) The load medium outlet of the heat pump unit evaporator (6-2) is connected with the load medium inlet of the refrigeration circuit condenser (7-4), and the load medium inlet of the heat pump unit evaporator (6-2) is connected with the refrigeration circuit condenser (7-4). The load medium outlet of the loop condenser (7-4) is connected, and the load medium outlet of the heat pump unit condenser (6-4) is connected with the second fluid inlet of the buried tube heat exchanger (1), and the The load medium inlet of the condenser (6-4) of the heat pump unit communicates with the second fluid outlet of the buried tube heat exchanger (1). 5. A mine waste heat soil source hybrid heat pump system according to claim 3, characterized in that: the surface mine waste heat utilization circuit further includes a heating circuit (8), and the heating circuit (8) includes a second cycle pump (8-1), second valve (8-2), heat load (8-3) and third valve (8-4), the outlet of the second circulating pump (8-1) is connected with the second valve One end of (8-2) is connected, and the other end of the second valve (8-2) is connected with one end of the heat load (8-3), and the other end of the heat load (8-3) is connected with the first end of the heat load (8-3). One end of the three valves (8-4) is connected, and the other end of the third valve (8-4) is connected with the load medium inlet of the heat pump condenser (6-4), and the heat pump condenser (6 -4) the outlet of the load medium is connected with the inlet of the second circulation pump (8-1), the outlet of the load medium of the evaporator (6-2) of the heat pump unit is connected with the second The fluid inlets are connected, and the load medium inlet of the evaporator (6-2) of the heat pump unit is connected with the second fluid outlet of the buried pipe heat exchanger (1). 6. A mine waste heat soil source hybrid heat pump system according to claim 3 or 4, characterized in that: the surface mine waste heat utilization circuit also includes a domestic hot water circuit (9), and the domestic hot water circuit ( 9) Including hot water heating load (9-1), third circulation pump (9-2) and fourth valve (9-3), the outlet of the third circulation pump (9-2) is connected with the fourth valve ( 9-3) is connected at one end, and the other end of the fourth valve (9-3) is connected with the load medium inlet of the heat pump unit condenser (6-4), and the heat pump unit condenser (6-4) The outlet of the load medium is connected with one end of the hot water heating load (9-1), and the other end of the hot water heating load (9-1) is connected with the inlet of the third circulation pump (9-2), and the The load medium outlet of the heat pump unit evaporator (6-2) is connected to the second fluid inlet of the buried pipe heat exchanger (1), and the load medium inlet of the heat pump unit evaporator (6-2) is connected to the ground pipe heat exchanger (1). The second fluid outlets of the heat exchanger (1) are connected. 7. A mine waste heat soil source hybrid heat pump system according to claim 3, characterized in that: the heat pump unit (6) also includes a cooling tower (6-5), and the cooling tower (6-5) The water outlet is connected to the load medium inlet of the heat pump condenser (6-4), and the load medium outlet of the heat pump condenser (6-4) is connected to the water inlet of the cooling tower (6-5). 8. A mine waste heat soil source hybrid heat pump system according to claim 6, characterized in that: the load medium outlet of the condenser (6-4) of the heat pump unit and the water inlet of the cooling tower (6-5) A fourth circulation pump (6-6) and a fifth valve (6-7) are arranged between them, and the outlet of the fourth circulation pump (6-6) communicates with one end of the fifth valve (6-7). The other end of the fifth valve (6-7) is connected with the water inlet of the cooling tower (6-5), and the inlet of the fourth circulation pump (6-6) is connected with the load of the heat pump unit condenser (6-4). The media outlets are connected. 9. A mine waste heat soil source hybrid heat pump system according to claim 3, characterized in that: one end of the cooling load (7-5) and the load medium inlet of the refrigeration circuit evaporator (6-2) A sixth circulation pump (7-6) and a seventh valve (7-7) are also arranged between them, the outlet of the sixth circulation pump (7-6) communicates with one end of the seventh valve (7-7), The other end of the seventh valve (7-7) communicates with the load medium inlet of the refrigeration circuit evaporator (6-2), and one end of the cooling load (7-5) communicates with the sixth circulation pump (7-6 ) entrances are connected.