Multi-unit mine heat pump system

Abstract

The utility model discloses a multi-unit mine heat pump system which comprises a heat pump unit group and a heat pipe heat exchanger. Wherein the heat pump unit group is connected with the heat pipe exchanger through a pipeline; the heat pump unit group comprises a first heat pump unit, a second heat pump unit to an Nth heat pump unit, and N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are connected in parallel or in series; and a first electromagnetic valve and a second electromagnetic valve are arranged on a pipeline between the heat pump unit group and the heat pipe exchanger. All the heat pump units in the system are arranged in series and in parallel, the heat pump units can be matched as required according to the mine air volume requirement, modules are intelligently selected to be started and stopped according to the actual load requirement of an air opening, frequency conversion adjustment and modular integrated assembly are achieved, and the field installation work amount is reduced.

Description

Technical Field

[0001] The utility model relates to the field of new energy, in particular to a multi-unit mine heat pump system. Background Art

[0002] The outdoor temperature in northern my country is relatively low in winter, and in most areas the outdoor temperature is below 0℃ for a long time. Some mine air shafts have anti-freezing requirements, and the temperature at the entrance of the air shaft must be kept above 2℃ to ensure the safety of personnel entering and exiting and underground equipment.

[0003] In the prior art, in order to provide hot air to the mine entrance, the heat source is mostly in the form of coal-fired, gas-fired boilers or electric boilers. The water is heated by the heat source and then passes through the surface cooler. The cold air is heated by the heat dissipation fan and then mixed with fresh air and provided to the mine entrance. However, due to the large differences in loads and working conditions in different application scenarios, no matter which form of heat source is used, it needs to be designed independently for each project, the system installation is difficult and the construction period is long.

[0004] The prior art urgently needs a mine wellhead air conditioning system that is simple, convenient, universal, and easy to install and operate. Utility Model Content

[0005] In order to solve various problems existing in traditional solutions, the utility model provides a multi-unit mine heat pump system, which includes a heat pump unit group and a heat pipe heat exchanger; wherein the heat pump unit group and the heat pipe heat exchanger are connected through a pipeline;

[0006] The heat pump unit group includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged in parallel;

[0007] A first solenoid valve and a second solenoid valve are arranged on the pipeline between the heat pump unit group and the heat pipe heat exchanger.

[0008] Furthermore, an explosion-proof heat dissipation fan is provided in the heat pipe heat exchanger.

[0009] Furthermore, the working fluid in the system is Freon.

[0010] Furthermore, the first heat pump unit, the second heat pump unit to the Nth heat pump unit are standardized module units.

[0011] The utility model also provides a multi-unit mine heat pump system, which includes a heat pump unit group and a heat pipe heat exchanger; wherein the heat pump unit group and the heat pipe heat exchanger are connected through a pipeline;

[0012] The heat pump unit group includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged end to end in series;

[0013] A first solenoid valve and a second solenoid valve are arranged on the pipeline between the heat pump unit group and the heat pipe heat exchanger.

[0014] Furthermore, an explosion-proof heat dissipation fan is provided in the heat pipe heat exchanger.

[0015] Furthermore, the working fluid in the system is Freon.

[0016] Furthermore, the first heat pump unit, the second heat pump unit to the Nth heat pump unit are standardized module units.

[0017] The various heat pump units in the system provided by the utility model are arranged in series and in parallel, and can be proportioned according to the mine air volume demand, and the module start and stop can be intelligently selected according to the actual load demand of the air outlet, thereby realizing variable frequency regulation and modular integrated assembly, reducing the amount of on-site installation engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific implementation of the present invention, the following briefly introduces the drawings required for use in the specific implementation or the description of the prior art.

[0019] Figure 1 This is a schematic diagram of the system structure of Example 1 disclosed in the utility model.

[0020] Figure 2 This is a schematic diagram of the system structure of Example 2 disclosed in the present utility model.

[0021] The meanings of the accompanying drawings are: 1—heat pump unit group; 2—first solenoid valve; 3—second solenoid valve; 4—explosion-proof cooling fan; 5—heat pipe heat exchanger. DETAILED DESCRIPTION

[0022] The structure and operation of the utility model patent will be further described in detail below in conjunction with the accompanying drawings. Obviously, the accompanying drawings are provided only for a better understanding of the utility model patent, and they should not be understood as limitations on the utility model patent. Based on the embodiments of the utility model patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, if the terms "first" and "second" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1

[0026] Combination Figure 1 As shown, this embodiment discloses a multi-unit mine heat pump system, which includes a heat pump unit group 1 and a heat pipe heat exchanger 5; wherein the heat pump unit group 1 and the heat pipe heat exchanger 5 are connected through a pipeline;

[0027] The heat pump unit group 1 includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged in parallel;

[0028] The pipeline between the heat pump unit group 1 and the heat pipe heat exchanger 5 is provided with a first solenoid valve 2 and a second solenoid valve 3 .

[0029] Specifically, an explosion-proof heat dissipation fan 4 is provided in the heat pipe heat exchanger 5 .

[0030] Specifically, the working fluid in the system is Freon.

[0031] Specifically, the first heat pump unit, the second heat pump unit to the Nth heat pump unit are standardized module units.

[0032] The system works as follows:

[0033] The heat pump units are arranged in parallel, and each independent module is set with different start and stop temperatures. During operation, the start and stop of the unit are controlled according to the air supply, return liquid or air supply temperature, which can realize system variable frequency regulation. The unit uses the reverse Carnot cycle principle to absorb heat from the air and exchange heat with the refrigerant Freon in the heat pipe system in the full liquid heat exchanger. The refrigerant in the evaporation section of the heat pipe will boil or evaporate after being heated, generating sensible heat of vaporization, and changing from liquid to gas. The generated high-temperature gas flows into the heat pipe heat exchanger 5 under the action of a certain pressure difference in the pipe. After being cooled by the explosion-proof heat dissipation fan 4, the steam encounters the cold wall and condenses into liquid, while releasing the latent heat of vaporization. The condensate flows back to the evaporation section and evaporates again under the action of gravity (or liquid absorption core) and the fluorine pump circulation. The parallel system operates in the fresh air mode. The unit only needs to heat the fresh air to a lower temperature to meet the wellhead air supply and meet the wellhead antifreeze requirements. The system utilizes the principle of a water collector and distributor to evenly distribute the heated Freon gas and operate stably.

[0034] The beneficial effects that can be achieved by this embodiment are:

[0035] (1) Multiple units are connected in parallel, using a manifold and distributor to adjust the proportions based on the mine air volume.

[0036] (2) Multiple units are controlled by a centralized microcomputer. According to the actual load demand of the air outlet, the modules are intelligently selected to start and stop, achieving variable frequency regulation and optimizing the operation strategy.

[0037] (3) The water distributor, water pump and valves are integrated into one assembly to reduce the amount of on-site installation work.

[0038] (4) The fresh air is directly heated to the supply air temperature.

[0039] Example 2

[0040] Combination Figure 2 As shown, a multi-unit mine heat pump system includes a heat pump unit group 1 and a heat pipe heat exchanger 5; wherein the heat pump unit group 1 and the heat pipe heat exchanger 5 are connected through a pipeline;

[0041] The heat pump unit group includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged end to end in series;

[0042] The pipeline between the heat pump unit group 1 and the heat pipe heat exchanger 5 is provided with a first solenoid valve 2 and a second solenoid valve 3 .

[0043] Specifically, an explosion-proof heat dissipation fan is arranged in the heat pipe heat exchanger.

[0044] Specifically, the working fluid in the system is Freon.

[0045] Specifically, the first heat pump unit, the second heat pump unit to the Nth heat pump unit are standardized module units.

[0046] The system works as follows:

[0047] Each heat pump unit is arranged in series, and each module only needs to complete the temperature rise of a fixed temperature, and finally heat the fresh air to a higher temperature, and mix the low-temperature fresh air to send it to the wellhead. This can achieve the wellhead antifreeze requirements with less equipment cost.

[0048] The beneficial effects that can be achieved by this embodiment are:

[0049] (1) Multiple units are connected in series and the proportion is determined according to the mine air volume.

[0050] (2) Multiple units are controlled by a centralized microcomputer. According to the actual load demand of the air outlet, the modules are intelligently selected to start and stop, achieving variable frequency regulation and optimizing the operation strategy.

[0051] (3) The fresh air is heated to a higher temperature and mixed with a certain amount of cold air to reach the supply air temperature. This can reduce the owner's initial investment and achieve high returns with small investment.

[0052] The above embodiments are only used to illustrate the present utility model patent, wherein the structure, connection method and manufacturing process of each component can be changed. Any equivalent transformations and improvements based on the present technical solution should not be excluded from the protection scope of the present utility model patent.

Claims

1. A multi-unit mine heat pump system, characterized in that: It includes a heat pump unit group and a heat pipe heat exchanger; wherein the heat pump unit group and the heat pipe heat exchanger are connected through a pipeline; The heat pump unit group includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged in parallel; A first solenoid valve and a second solenoid valve are arranged on the pipeline between the heat pump unit group and the heat pipe heat exchanger.

2. The system according to claim 1, characterized in that: An explosion-proof heat dissipation fan is arranged in the heat pipe heat exchanger.

3. The system according to claim 1, characterized in that: The working fluid in the system is Freon.

4. The system according to claim 1, characterized in that: The first heat pump unit, the second heat pump unit to the Nth heat pump unit are standardized module units.

5. The system according to claim 4, characterized in that: An explosion-proof heat dissipation fan is arranged in the heat pipe heat exchanger.

6. The system according to claim 4, characterized in that: The working fluid in the system is Freon.

7. A multi-unit mine heat pump system, characterized in that: It includes a heat pump unit group and a heat pipe heat exchanger; wherein the heat pump unit group and the heat pipe heat exchanger are connected through a pipeline; The heat pump unit group includes a first heat pump unit, a second heat pump unit to an Nth heat pump unit, wherein N is greater than or equal to three; the first heat pump unit, the second heat pump unit to the Nth heat pump unit are arranged end to end in series; A first solenoid valve and a second solenoid valve are arranged on the pipeline between the heat pump unit group and the heat pipe heat exchanger.

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