Mine heat and humidity independent regulation and control system and method

Abstract

The invention discloses a mine heat and humidity independent regulation and control system and method. The system comprises a ventilation system. The ventilation system is used for sequentially introducing mine airflow into the dust removal system, the dehumidification system and the cooling system to obtain clean low-temperature low-humidity air; the heat recovery system collects waste heat in the cooling system, the dehumidification system, the dust removal system and the mine gushing water collection device. The power system provides circulation power for water path circulation of the cooling system, the dehumidification system, the mine gushing water collecting device and the dust removal system, and stable operation of the system is maintained. The intelligent control system monitors operation parameters of the cooling system, the dehumidification system, the dust removal system, the heat recovery system and the ventilation system and mine parameters, air supply parameters, the operation parameters and standby equipment are adjustable, and safety early warning is achieved through the central controller. The system and the method have the capability of independently regulating and controlling temperature and humidity, waste heat can be fully utilized, and the energy consumption of the system is low.

Description

Technical Field

[0001] The present invention relates to the technical field of mine environment control, and in particular to a mine heat and humidity independent control system and method. Background Art

[0002] As the depth of mineral resource mining increases, the temperature and humidity underground continue to rise, resulting in a gradual deterioration of thermal comfort conditions. Heat damage has brought considerable challenges to engineering construction and human functions. Through effective temperature and humidity control, not only can the mining efficiency be improved, but also the health of workers can be protected and potential dangers caused by high temperature and humidity can be prevented.

[0003] Traditional mine environmental control systems usually use ventilation systems to reduce temperature and humidity, but this method often has the following problems: First, the ventilation system is not flexible enough to meet the independent temperature and humidity requirements of different areas within the mine; second, humidity control is usually bundled with temperature control and lacks precise independent adjustment capabilities; third, it has high energy consumption and high maintenance costs.

[0004] Chinese patent 2017106129950 discloses a distributed cooling air source heat pump system that utilizes low-grade thermal energy in mines. The system mainly includes a diffusion tower, a heat pump unit, and an air purifier. It utilizes the principle of gas-liquid phase change heat transfer, directly exchanges heat with the return air from the mine through water mist in the air, and combines with an air compressor to realize the recovery of low-grade heat and other latent heat in the return air from the mine, thereby providing cooling capacity for mine cooling and dehumidification. However, the system has the problem of heat and humidity control coupling, lacks independent control capabilities, and the waste heat utilization form is relatively single, resulting in high system energy consumption. Summary of the invention

[0005] The object of the present invention is to provide a mine heat and humidity independent control system and method, which has the ability to independently control temperature and humidity, and can fully utilize waste heat, with low system energy consumption.

[0006] To achieve the above-mentioned purpose, the present invention provides an independent control system for heat and humidity in a mine, including a cooling system, a dehumidification system, a cooling tower, a mine water collection device, a dust removal system, a heat recovery system, a power system, an intelligent control system, and a ventilation system; the ventilation system sequentially passes the mine airflow into the dust removal system, the dehumidification system, and the cooling system, wherein the dust-containing high-temperature and high-humidity air enters the dust removal system, and after being processed by the dust removal system, the clean medium-temperature and high-humidity air is output and enters the dehumidification system, and after being processed by the dehumidification system, the clean medium-temperature and low-humidity air is output and enters the cooling system, and after being processed by the cooling system, clean low-temperature and dry air is obtained; the cooling tower is a compression refrigeration system for the cooling system Backup equipment for circulating cooling ensures the normal operation of the cooling system; the heat recovery system uses indirect heat exchange to collect waste heat from the cooling system, dehumidification system, dust removal system and mine water collection device, and uses low-grade energy to achieve solution regeneration and refrigerant cooling; the power system provides circulating power for the water circulation of the cooling system, dehumidification system, mine water collection device and dust removal system to maintain stable operation of the system; the intelligent control system monitors the operating parameters of the cooling system, dehumidification system, dust removal system, heat recovery system and ventilation system as well as mine parameters, realizes adjustable air supply parameters, operating parameters and backup equipment, and realizes safety warning through the central controller;

[0007] The cooling system includes a compressor, a condenser, an expansion valve, and an air cooler; the dehumidification system includes a solution dehumidification device, a solution regeneration device, a concentrated solution tank, a dilute solution tank, and a solution heating device; the dust removal system includes a spray dust removal device and a spray water collection device; the heat recovery system includes a dilute solution-refrigerant heat exchanger, a concentrated solution-refrigerant heat exchanger, a mine water waste heat recovery device, a dust removal water waste heat recovery device, and a solution heat exchanger; the power system includes a cooling water pump, a dilute solution pump, a concentrated solution pump, a mine water pump, and a spray water pump; the intelligent control system includes solenoid valves I to solenoid valves XIV, pipeline temperature sensors I to pipeline temperature sensors V, air duct temperature sensors I to air duct temperature sensors IV, and air duct humidity sensors I to air duct humidity sensors IV; the ventilation system includes a mine fresh air fan, a mine return air fan, an electric butterfly valve, a supply air static pressure sensor, a fresh air fan controller, a return air static pressure sensor, a return air fan controller, a supply air duct, and a return air duct.

[0008] As a further solution of the present invention: the medium used in the internal pipes of the cooling system is a refrigerant, which works in the system according to the corresponding refrigeration cycle principle to achieve the refrigeration function; the medium of the internal pipes of the dehumidification system is a dehumidification solution, which relies on the characteristics of the dehumidification solution to dehumidify the air; the medium of the internal pipes of the mine water collection device is mine water, which participates in the corresponding heat transfer process in the device; the internal medium of the dust removal system is a dust removal aqueous solution, which utilizes the interaction between the dust removal aqueous solution and the dust-laden air to achieve the purpose of removing dust from the air; the water circuits of these four devices are independent of each other.

[0009] As a further solution of the present invention: one end of the condenser is connected to a pipeline temperature sensor I, an expansion valve, and an input end of an air cooler in sequence through a pipeline, the output end of the air cooler is connected to a first input end of a concentrated solution-refrigerant heat exchanger, the first output end of the concentrated solution-refrigerant heat exchanger is connected to an input end of a compressor, the output end of the compressor is connected to a first input end of a dilute solution-refrigerant heat exchanger, the first output end of the dilute solution-refrigerant heat exchanger is connected to a condenser, the output end above the condenser is connected to one end of a cooling tower through an electromagnetic valve I, the other end of the cooling tower is connected to an input end of the condenser in sequence through a cooling water pump and an electromagnetic valve III, the input end is connected to the top of the condenser The output end of the concentrated solution-refrigerant heat exchanger is connected to an electromagnetic valve II; the second output end of the concentrated solution-refrigerant heat exchanger is connected to one end of the concentrated solution tank, and the other end of the concentrated solution tank is connected to the input end of the solution dehumidification device through an electromagnetic valve XIII; the output end of the solution dehumidification device is connected to the first input end of the solution heat exchanger through a dilute solution pump, and the first output end of the solution heat exchanger is provided with a pipeline temperature sensor III, and the output end is divided into two paths, one of which is connected to the first input end of the dust removal water waste heat recovery device through an electromagnetic valve X, and the other is connected to the second input end of the dilute solution-refrigerant heat exchanger through an electromagnetic valve XI; the first output end of the dust removal water waste heat recovery device is sequentially provided with an electromagnetic valve XII pipeline temperature sensor The sensor II is divided into two paths, one of which is connected to the first input end of the mine water waste heat recovery device through the solenoid valve VIII, and the other is connected to the solenoid valve XI and the second input end branch of the dilute solution-refrigerant heat exchanger through the solenoid valve VII; the first output end of the mine water waste heat recovery device is connected to the second input end of the dilute solution-refrigerant heat exchanger through the solenoid valve VI; the output end of the spray dust removal device is connected to the pipeline temperature sensor IV and the spray water pump in sequence, and finally connected to the second input end of the dust removal water waste heat recovery device, and the second output end of the dust removal water waste heat recovery device is connected to the spray water collection device; the second output end of the mine water waste heat recovery device is connected to the mine water collection device The other end of the mine water collection device is connected to the second input end of the mine water waste heat recovery device through a mine water pump, a pipeline temperature sensor V and an electromagnetic valve IX in sequence; the second output end of the dilute solution-refrigerant heat exchanger is divided into two paths, one path is connected to the input end of the dilute solution tank through an electromagnetic valve IV, and the other path is connected to the solution heating device and the input end of the dilute solution tank in sequence through an electromagnetic valve V; the output end of the dilute solution tank is connected to the input end of the solution regeneration device through an electromagnetic valve XIV; the output end of the solution regeneration device is connected to the second input end of the solution heat exchanger through a concentrated solution pump, and the second output end of the solution heat exchanger is connected to the second input end of the concentrated solution-refrigerant heat exchanger.

[0010] As a further solution of the present invention: the air supply duct is connected to the fresh air inlet, the spray dust removal device, the solution dehumidification device, the air cooler, the mine fresh air fan and the air supply port in sequence from left to right; the spray dust removal device, the solution dehumidification device and the air cooler are connected in gas path, an electric butterfly valve, an air duct temperature sensor I and an air duct humidity sensor I are arranged at the fresh air inlet; an air duct temperature sensor II and an air duct humidity sensor II are arranged at the air supply port, the mine fresh air fan is connected to the fresh air fan controller, and an air supply static pressure sensor is connected at the air supply port and the rear of the mine fresh air fan;

[0011] The return air duct is connected to the return air port, the solution regeneration device, the mine return air fan, and the exhaust port in sequence from right to left; an air duct humidity sensor III and an air duct temperature sensor III are arranged at the return air port, and an air duct temperature sensor IV and an air duct humidity sensor IV are arranged at the exhaust port; the mine return air fan is connected to the return air fan controller, and a return air static pressure sensor is connected behind the exhaust port and the mine return air fan.

[0012] As a further solution of the present invention: the dehumidification solution used in the dehumidification system is a 1:1 mixed solution of lithium chloride and calcium chloride, and the dehumidification solution device is made of zinc-nickel alloy material.

[0013] A control method for a mine heat and humidity independent control system, after the condenser cools the refrigerant, it enters the expansion valve through a pipeline, then enters the air cooler to cool the mine airflow, then enters the concentrated solution-refrigerant heat exchanger and enters the compressor to complete the compression process to form a high-temperature refrigerant, then enters the dilute solution-refrigerant heat exchanger and enters the condenser to complete the entire compression refrigeration cycle; the cooling tower serves as the cold end input of the condenser to cool the refrigerant in the compression refrigeration cycle; the pipeline temperature sensor I monitors whether the refrigerant temperature meets the operating requirements, if not, by opening the solenoid valve I and the solenoid valve III, the cooling tower is used for cooling, and the cooling water flow is adjusted by adjusting the solenoid valve II, so that the cooling water temperature can be adjusted.

[0014] As a further solution of the present invention: the dehumidification system is combined with the heat recovery system to complete the regeneration of the dehumidification solution. The input end of the solution dehumidification device is a concentrated solution, and the output end is a dilute solution, so as to dehumidify the air; the input end of the solution regeneration device is a concentrated solution, and the output end is a concentrated solution. The dilute solution pump and the concentrated solution pump provide the solution dehumidification regeneration cycle power; the dilute solution at the output end of the solution dehumidification device enters the solution heat exchanger through the dilute solution pump to exchange heat with the concentrated solution at the output end of the solution regeneration device, and the concentrated solution is the heat source to realize primary waste heat recovery; the dilute solution output from the solution heat exchanger enters the dust removal water waste heat recovery device to perform secondary waste heat recovery with the spray solution output from the spray dust removal device, and the spray solution is the heat source; the solution output from the dust removal water waste heat recovery device A part of the liquid enters the mine water gushing waste heat recovery device and performs three waste heat recovery with the mine water gushing device; the treated dilute solution enters the dilute solution-refrigerant heat exchanger to complete four waste heat recovery to obtain a high-temperature dilute solution; the high-temperature dilute solution enters the dilute solution tank through the solenoid valve IV, and then enters the solution regeneration device to complete solution regeneration to obtain a high-temperature concentrated solution; the high-temperature concentrated solution enters the solution heat exchanger and the concentrated solution-refrigerant heat exchanger in turn through the concentrated solution pump to complete heat exchange to obtain a concentrated solution that meets the requirements, the concentrated solution enters the concentrated solution tank for storage, and enters the solution dehumidification device through the control of the solenoid valve XIII to dehumidify the air to become a dilute solution, and the dilute solution finally serves as the output end of the solution dehumidification device and enters the dilute solution pump to complete the closed cycle of solution dehumidification-regeneration;

[0015] The pipeline temperature sensor II is used to monitor the temperature of the dehumidification solution. When the heat recovery system cannot meet the required working conditions, the intelligent control system controls the opening of the solenoid valve V to allow the dilute solution to enter the solution heating device so that the dehumidification solution meets the required regeneration temperature. By controlling the solenoid valve XIII and the solenoid valve XIV, the flow rate of the dehumidification solution is controlled to meet the dehumidification requirements under different wet loads.

[0016] As a further solution of the present invention, the heat recovery system is combined with the intelligent control system to realize flexible conversion of multiple heat recovery devices; the first output end of the solution heat exchanger is provided with a pipeline temperature sensor III to monitor the dilute solution temperature, the pipeline temperature sensor IV to monitor the spray water temperature, and the pipeline temperature sensor V to monitor the mine water gushing temperature; if the dilute solution temperature is lower than the spray water temperature and the mine water gushing temperature, and the spray water temperature is lower than the mine water gushing temperature, then the solenoid valve VI, the solenoid valve VIII, the solenoid valve X, and the solenoid valve XII are opened, and the solenoid valve VII and the solenoid valve XI are closed, so that the dilute solution enters the dust removal water waste heat recovery device and the mine water waste heat recovery device in turn, and the dehumidification solution preheating process is completed; if the dilute solution temperature is lower than the spray water temperature and the mine water gushing temperature, and the spray water temperature is higher than the mine water gushing temperature, then the solenoid valve VII and the solenoid valve X are opened. , solenoid valve XII, close solenoid valve VI, solenoid valve VIII, and solenoid valve XI, so that the dilute solution enters the dust removal water waste heat recovery device in turn to complete the dilute solution preheating, and skips the mine water waste heat recovery device; if the dilute solution temperature is higher than the spray water temperature and lower than the mine water temperature, close solenoid valve X and solenoid valve XII, open solenoid valve VI, solenoid valve VII, solenoid valve VIII, and solenoid valve XI, so that the dilute solution directly enters the mine water waste heat recovery device to complete the dilute solution preheating, and skips the dust removal water waste heat recovery device; if the dilute solution temperature is higher than the spray water temperature and the mine water temperature, open solenoid valve XI, close solenoid valve VI, solenoid valve VII, solenoid valve VIII, solenoid valve IX, solenoid valve X, and solenoid valve XII, so that the dilute solution directly enters the dilute solution-refrigerant heat exchanger, and skips the dehumidification solution preheating process.

[0017] As a further solution of the present invention: the intelligent control system is combined with the ventilation system to realize the control of air supply parameters; the temperature data is collected by the air duct temperature sensor I and the air duct temperature sensor II, uploaded to the central processing unit and judged whether it meets the air supply temperature requirement, and the air supply volume is controlled by controlling the electric butterfly valve and the mine fresh air fan; the humidity data is collected by the air duct humidity sensor I and the air duct humidity sensor II, and the central processing unit judges whether it meets the air supply requirement and controls the solution flow rate through the solenoid valve XIII and the solenoid valve XIV; the air duct humidity sensor III and the air duct humidity sensor IV are used to judge whether a solution heating device is needed, and the solution concentration is controlled by controlling the solenoid valve IV and the solenoid valve V, and the dilute solution is heated to meet the requirement by control so that the air supply humidity meets the standard.

[0018] Compared with the prior art, the present invention realizes the integrated processing of dust removal, dehumidification and cooling, realizes air supply that meets the requirements of clean low-temperature drying, ensures the underground working environment, and uses an intelligent control system to monitor the operating parameters of the cooling system, dehumidification system, dust removal system, heat recovery system and ventilation system as well as the mine parameters, so as to realize the adjustable air supply parameters, operating parameters and spare equipment, so that the system has the ability to independently control temperature and humidity, and realizes safety warning through the central controller. The heat recovery system is used to collect waste heat from the cooling system, dehumidification system, dust removal system and mine water collection device to realize solution regeneration and refrigerant cooling, make full use of waste heat, and use multi-stage heat recovery technology to realize the utilization of low-grade heat sources, effectively reduce the energy consumption of the system, and save costs. Combined with intelligent monitoring, the use order of heat recovery equipment can be flexibly converted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the independent heat and humidity control system for a mine according to the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the water circulation for independently regulating heat and humidity in a mine in the present invention.

[0021] Figure 3 It is a schematic diagram of the air supply principle of the mine heat and humidity independent control system in the present invention.

[0022] Figure 4 It is a schematic diagram of the return air principle of the mine heat and humidity independent control system in the present invention.

[0023] Figure 5 It is a control principle diagram of the intelligent control system in the present invention.

[0024] In the figure: 1-cooling system; 101-compressor; 102-condenser; 103-expansion valve; 104-air cooler; 2-dehumidification system; 201-solution dehumidification device; 202-solution regeneration device; 203-concentrated solution tank; 204-dilute solution tank; 205-solution heating device; 3-cooling tower; 4-mine water collection device; 5-dust removal system; 501-spray dust removal device; 502-spray water collection device; 6-heat recovery system; 601-dilute solution-refrigerant heat exchanger; 602-concentrated solution - Refrigerant heat exchanger; 603- Mine water waste heat recovery device; 604- Dust removal water waste heat recovery device; 605- Solution heat exchanger; 7- Power system; 701- Cooling water pump; 702- Dilute solution pump; 703- Concentrated solution pump; 704- Mine water pump; 705- Spray water pump; 8- Intelligent control system; 801- Solenoid valve I; 802- Solenoid valve II; 803- Solenoid valve III; 804- Solenoid valve IV; 805- Solenoid valve V; 806- Solenoid valve VI; 807- Solenoid valve VII; 8 08-solenoid valve VIII; 809-solenoid valve IX; 810-solenoid valve X; 811-solenoid valve XI; 812-solenoid valve XII; 813-solenoid valve XIII; 814-solenoid valve XIV; 815-pipeline temperature sensor I; 816-pipeline temperature sensor II; 817-pipeline temperature sensor III; 818-pipeline temperature sensor IV; 819-pipeline temperature sensor V; 820-duct temperature sensor I; 821-duct temperature sensor II; 822-duct temperature sensor Sensor III; 823-air duct temperature sensor IV; 824-air duct humidity sensor I; 825-air duct humidity sensor II; 826-air duct humidity sensor III; 827-air duct humidity sensor IV; 9-ventilation system; 901-mine fresh air fan; 902-mine return air fan; 903-electric butterfly valve; 904-supply air static pressure sensor; 905-fresh air fan controller; 906-return air static pressure sensor; 907-return air fan controller; 908-supply air duct; 909-return air duct. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 , Figure 2As shown, a mine heat and humidity independent control system includes a cooling system 1, a dehumidification system 2, a cooling tower 3, a mine water collection device 4, a dust removal system 5, a heat recovery system 6, a power system 7, an intelligent control system 8, and a ventilation system 9; the ventilation system 9 sequentially passes the mine airflow into the dust removal system 5, the dehumidification system 2, and the cooling system 1, and obtains clean, low-temperature, dry air through processing, and the air ducts of each system are connected to ensure a smooth air processing process; wherein, the dust-containing high-temperature and high-humidity air enters the dust removal system 5, and after being processed by the dust removal system 5, clean medium-temperature and high-humidity air is output and enters the dehumidification system 2, and after being processed by the dehumidification system 2, clean medium-temperature and low-humidity air is output and enters the cooling system 1, and clean low-temperature and dry air is obtained after being processed by the cooling system 1. The medium used in the internal pipeline of the cooling system 1 is refrigerant, which works according to the corresponding refrigeration cycle principle in the system to achieve the refrigeration function; the medium of the internal pipeline of the dehumidification system 2 is dehumidification solution, which relies on the characteristics of the dehumidification solution to dehumidify the air; the medium of the internal pipeline of the mine water collection device 4 is mine water, which participates in the corresponding heat transfer process in the device; the internal medium of the dust removal system 5 is dust removal water solution, which utilizes the interaction between the dust removal water solution and the dust-laden air to achieve the purpose of removing dust from the air; the water circuits of these four devices are independent of each other. The cooling tower 3 is a backup device for the compression refrigeration cycle cooling of the cooling system 1 to ensure the normal operation of the cooling system 1; the heat recovery system 6 adopts an indirect heat exchange method to collect waste heat from the cooling system 1, the dehumidification system 2, the dust removal system 5 and the mine water collection device 4, and uses low-grade energy to achieve solution regeneration and refrigerant cooling; the power system 7 provides circulating power for the water circulation of the cooling system 1, the dehumidification system 2, the mine water collection device 4 and the dust removal system 5 to maintain stable operation of the system; the intelligent control system 8 monitors the operating parameters of the cooling system 1, the dehumidification system 2, the dust removal system 5, the heat recovery system 6 and the ventilation system 9 as well as the mine parameters to achieve adjustable air supply parameters, operating parameters and backup equipment, and realize safety warnings through the central controller.

[0027] like Figures 2 to 4As shown, the cooling system 1 includes a compressor 101, a condenser 102, an expansion valve 103, and an air cooler 104; the dehumidification system 2 includes a solution dehumidification device 201, a solution regeneration device 202, a concentrated solution tank 203, a dilute solution tank 204, and a solution heating device 205; the dust removal system 5 includes a spray dust removal device 501 and a spray water collection device 502; the heat recovery system 6 includes a dilute solution-refrigerant heat exchanger 601, a concentrated solution-refrigerant heat exchanger 602, a mine water waste heat recovery device 603, a dust removal water waste heat recovery device 604, and a solution heat exchanger 605; the power system 7 includes a cooling water pump 701, a dilute solution pump 702, a concentrated solution pump 703, and a concentrated solution pump 704. Solution pump 703, mine water pump 704, spray water pump 705; the intelligent control system 8 includes solenoid valve I801~solenoid valve XIV814, pipeline temperature sensor I815~pipeline temperature sensor V819, air duct temperature sensor I820~air duct temperature sensor IV823, air duct humidity sensor I824~air duct humidity sensor IV827; the ventilation system 9 includes a mine fresh air fan 901, a mine return air fan 902, an electric butterfly valve 903, a supply air static pressure sensor 904, a fresh air fan controller 905, a return air static pressure sensor 906, a return air fan controller 907, a supply air duct 908 and a return air duct 909.

[0028] Dehumidification system 2 adopts solution dehumidification. The dehumidification solution is a 1:1 mixed solution of lithium chloride and calcium chloride, which reduces crystallization and improves the dehumidification efficiency of the solution. The dehumidification solution device uses zinc-nickel alloy to reduce solution corrosion.

[0029] like Figure 2As shown, the water circuit includes a condenser 102, one end of the condenser 102 is connected to a pipe temperature sensor 1815, an expansion valve 103, and an input end of an air cooler 104 in sequence through a pipe, the output end of the air cooler 104 is connected to a first input end of a concentrated solution-refrigerant heat exchanger 602, the first output end of the concentrated solution-refrigerant heat exchanger 602 is connected to an input end of a compressor 101, the output end of the compressor 101 is connected to a first input end of a dilute solution-refrigerant heat exchanger 601, the first output end of the dilute solution-refrigerant heat exchanger 601 is connected to the condenser 102, the output end above the condenser 102 is connected to one end of a cooling tower 3 through an electromagnetic valve 1801, and the other end of the cooling tower 3 is connected to a cooling water pump 701, an electromagnetic valve 1801 in sequence. III803 is connected to an input end of the condenser 102, and a solenoid valve II802 is connected between the input end and the output end above the condenser 102; the second output end of the concentrated solution-refrigerant heat exchanger 602 is connected to one end of the concentrated solution tank 203, and the other end of the concentrated solution tank 203 is connected to the input end of the solution dehumidification device 201 through the solenoid valve XIII813; the output end of the solution dehumidification device 201 is connected to the first input end of the solution heat exchanger 605 through the dilute solution pump 702, and the first output end of the solution heat exchanger 605 is provided with a pipeline temperature sensor III817, and the output end is divided into two paths, one of which is connected to the first input end of the dust removal water waste heat recovery device 604 through the solenoid valve X810, and the other is connected to the first input end of the dust removal water waste heat recovery device 604 through the solenoid valve XI8 11 is connected to the second input end of the dilute solution-refrigerant heat exchanger 601; the first output end of the dust removal water waste heat recovery device 604 is sequentially provided with an electromagnetic valve XII812 and a pipeline temperature sensor II816 and then divided into two paths, one of which is connected to the first input end of the mine water waste heat recovery device 603 through an electromagnetic valve VIII808, and the other is connected to the electromagnetic valve XI811 and the second input end branch of the dilute solution-refrigerant heat exchanger 601 through an electromagnetic valve VII807; the first output end of the mine water waste heat recovery device 603 is connected to the second input end of the dilute solution-refrigerant heat exchanger 601 through an electromagnetic valve VI806; the output end of the spray dust removal device 501 is sequentially connected to the pipeline temperature sensor IV818, the spray water pump 70 5, and finally connected to the second input end of the dust removal water waste heat recovery device 604, and the second output end of the dust removal water waste heat recovery device 604 is connected to the spray water collection device 502; the second output end of the mine water gushing waste heat recovery device 603 is connected to one end of the mine water gushing collection device 4, and the other end of the mine water gushing collection device 4 is connected to the second input end of the mine water gushing waste heat recovery device 603 through the mine water pump 704, the pipeline temperature sensor V819, and the solenoid valve IX809 in sequence; the second output end of the dilute solution-refrigerant heat exchanger 601 is divided into two paths, one of which is connected to the input end of the dilute solution tank 204 through the solenoid valve IV804, and the other is connected to the solution heating device 205 and the input end of the dilute solution tank 204 through the solenoid valve V805 in sequence;The output end of the weak solution tank 204 is connected to the input end of the solution regeneration device 202 through the electromagnetic valve XIV814; the output end of the solution regeneration device 202 is connected to the second input end of the solution heat exchanger 605 through the concentrated solution pump 703, and the second output end of the solution heat exchanger 605 is connected to the second input end of the concentrated solution-refrigerant heat exchanger 602.

[0030] After the condenser 102 cools the refrigerant, it enters the expansion valve 103 through the pipeline, then enters the air cooler 104 to cool the mine air flow, then enters the concentrated solution-refrigerant heat exchanger 602 and enters the compressor 101 to complete the compression process to form a high-temperature refrigerant, then enters the dilute solution-refrigerant heat exchanger 601 and enters the condenser 102 to complete the entire compression refrigeration cycle. The cooling tower 3 serves as the cold end input of the condenser 102 to cool the refrigerant in the compression refrigeration cycle. The pipeline temperature sensor I815 monitors whether the refrigerant temperature meets the operating requirements. If it does not meet the requirements, the cooling tower 3 is used to cool down by opening the solenoid valve I801 and the solenoid valve III803, and the cooling water flow is adjusted by adjusting the solenoid valve II802 to achieve adjustable cooling of the cooling water.

[0031] The dehumidification system 2 is combined with the heat recovery system 6 to complete the regeneration of the dehumidification solution. The input end of the solution dehumidification device 201 is a concentrated solution, and the output end is a dilute solution, and the air is dehumidified; the input end of the solution regeneration device 202 is a concentrated solution, and the output end is a concentrated solution. The dilute solution pump 702 and the concentrated solution pump 703 provide solution dehumidification regeneration cycle power. The dilute solution at the output end of the solution dehumidification device 201 enters the solution heat exchanger 605 through the dilute solution pump 702 to exchange heat with the concentrated solution at the output end of the solution regeneration device 202. The concentrated solution is the heat source to achieve primary waste heat recovery; the dilute solution output by the solution heat exchanger 605 enters the dust removal water waste heat recovery device 604 to perform secondary waste heat recovery with the spray solution output by the spray dust removal device 501, and the spray solution is the heat source; a part of the solution output by the dust removal water waste heat recovery device 604 enters the mine water waste heat recovery device 603 to perform tertiary waste heat recovery with the mine water gushing device 4; the treated dilute solution enters the dilute solution-refrigerant heat exchanger 601 to complete four waste heat Heat recovery is performed to obtain a high-temperature dilute solution; the high-temperature dilute solution enters the dilute solution tank 204 through the solenoid valve IV804, and then enters the solution regeneration device 202 to complete solution regeneration and obtain a high-temperature concentrated solution; the high-temperature concentrated solution enters the solution heat exchanger 605 and the concentrated solution-refrigerant heat exchanger 602 in turn through the concentrated solution pump 703 to complete heat exchange to obtain a concentrated solution that meets the requirements, and the concentrated solution enters the concentrated solution tank 203 for storage, and enters the solution dehumidification device 201 through the control of the solenoid valve XIII813 to dehumidify the air to become a dilute solution, and the dilute solution finally serves as the output end of the solution dehumidification device 201 and enters the dilute solution pump 702 to complete the closed cycle of solution dehumidification-regeneration. The concentrated solution is beneficial to improving the dehumidification efficiency by precooling, and the dilute solution is beneficial to improving the regeneration efficiency by preheating.

[0032] The dehumidification system 2 is combined with the intelligent control system 8 to ensure that the operating parameters of the dehumidification system meet the requirements. The pipeline temperature sensor II816 is used to monitor the temperature of the dehumidification solution; when the heat recovery system 6 cannot meet the required working conditions, the intelligent control system 8 controls the opening of the solenoid valve V805 to allow the dilute solution to enter the solution heating device 205 so that the dehumidification solution meets the required regeneration temperature. By controlling the solenoid valve XIII813 and the solenoid valve XIV814, the flow of the dehumidification solution is controlled to meet the dehumidification requirements under different wet loads.

[0033] The mine water collection device 4 is connected to the mine water pump 704, which provides power to the mine water waste heat recovery device 603. The mine water waste heat recovery device 603 heats the dehumidification solution, and the heated mine water flows back to the mine water collection device 4, thereby completing the mine water heat recovery work.

[0034] The dust removal system 5 includes spray water, which processes the dust-laden airflow through the spray dust removal device 501. The spray water is collected and enters the dust removal water waste heat recovery device 604 to complete waste heat recovery and then enters the spray water collection device 502. The dust removal system 5 is an open loop.

[0035] The heat recovery system 6 is combined with the intelligent control system 8 to realize flexible conversion of multiple heat recovery devices. The first output end of the solution heat exchanger 605 is provided with a pipeline temperature sensor III817 to monitor the dilute solution temperature, the pipeline temperature sensor IV818 to monitor the spray water temperature, and the pipeline temperature sensor V819 to monitor the mine water temperature. If the temperature of the dilute solution is lower than the spray water temperature and the mine water gushing temperature, and the spray water temperature is lower than the mine water gushing temperature, then open the solenoid valve VI806, solenoid valve VIII808, solenoid valve X810, and solenoid valve XII812, and close the solenoid valve VII807 and solenoid valve XI811, so that the dilute solution enters the dust removal water waste heat recovery device 604 and the mine water gushing waste heat recovery device 603 in sequence to complete the dehumidification solution preheating process; if the temperature of the dilute solution is lower than the spray water temperature and the mine water gushing temperature, and the spray water temperature is higher than the mine water gushing temperature, then open the solenoid valve VII807, solenoid valve X810, and solenoid valve XII812, and close the solenoid valve VI806, solenoid valve VIII808, and solenoid valve XI811, so that the dilute solution enters the dust removal water waste heat recovery device 604 in sequence to complete the dilute solution preheating, and jump. Through the mine water waste heat recovery device 603; if the dilute solution temperature is higher than the spray water temperature and lower than the mine water temperature, close the solenoid valve X810 and the solenoid valve XII812, open the solenoid valve VI806, the solenoid valve VII807, the solenoid valve VIII808, and the solenoid valve XI811, so that the dilute solution directly enters the mine water waste heat recovery device 603 to complete the dilute solution preheating, and skips the dust removal water waste heat recovery device 604; if the dilute solution temperature is higher than the spray water temperature and the mine water temperature, open the solenoid valve XI811, close the solenoid valve VI806, the solenoid valve VII807, the solenoid valve VIII808, the solenoid valve IX809, the solenoid valve X810, and the solenoid valve XII812, so that the dilute solution directly enters the dilute solution-refrigerant heat exchanger 601, and skips the dehumidification solution preheating process.

[0036] The ventilation system 9 includes a mine air supply mode and a mine return air mode, such as Figure 3As shown, the mine air supply mode includes an air supply duct 908, which is connected to the fresh air inlet, the spray dust removal device 501, the solution dehumidification device 201, the air cooler 104, the mine fresh air fan 901 and the air supply port in sequence from left to right; the spray dust removal device 501, the solution dehumidification device 201, and the air cooler 104 are connected in air path, and the spray dust removal device 501 performs dust removal on the dust removal high-temperature and high-humidity airflow and realizes a primary cooling to form a clean medium-temperature and high-humidity airflow, which then enters the solution dehumidification device 201 for Dehumidification treatment is carried out and secondary cooling is achieved to form a clean medium-temperature dry airflow. At the same time, the medium-temperature airflow with one cooling is beneficial to improving the dehumidification efficiency of the solution. An electric butterfly valve 903, an air duct temperature sensor I820, and an air duct humidity sensor I824 are set at the fresh air inlet; an air duct temperature sensor II821 and an air duct humidity sensor II825 are set at the air supply outlet, and the mine fresh air fan 901 is connected to the fresh air fan controller 905. The air supply static pressure sensor 904 is connected at the air supply outlet and the rear of the mine fresh air fan 901.

[0037] like Figure 4 As shown, the mine return air mode includes a return air duct 909, which is connected to the return air outlet, the solution regeneration device 202, the mine return air fan 902, and the exhaust outlet from right to left in sequence; an air duct humidity sensor III826 and an air duct temperature sensor III822 are provided at the return air outlet, and an air duct temperature sensor IV823 and an air duct humidity sensor IV827 are provided at the exhaust outlet; the mine return air fan 902 is connected to the return air fan controller 907, and a return air static pressure sensor 906 is connected at the exhaust outlet and the rear of the mine return air fan 902.

[0038] like Figures 1 to 4 As shown, the intelligent control system 8 includes a safety warning part, a central controller, multiple sensors, and a controller, wherein the sensors are arranged at key positions of the mine and the heat and humidity treatment equipment (such as the working face, transportation channel, ventilation system inlet and outlet, refrigerant pipeline and solution pipeline, etc.), and the mine environment is controlled by real-time monitoring of the temperature and humidity of different areas in the mine, and the operation of the equipment is controlled by monitoring the pipeline temperature. The data collected by the sensor is transmitted to the central control unit in real time through wireless communication technology, forming an environmental monitoring network covering the entire mine. The central controller analyzes and processes the environmental data in the mine, independently adjusts the temperature and humidity equipment, and performs historical records and trend analysis on the collected temperature and humidity data, providing a scientific basis for the long-term environmental regulation of the mine, and controlling and warning the temperature and humidity of the mine according to the preset standards.

[0039] The intelligent control system 8 is combined with the ventilation system 9 to realize the control of air supply parameters. The temperature data is collected by the air duct temperature sensor I820 and the air duct temperature sensor II821, uploaded to the central processor and judged whether it meets the air supply temperature requirements, and the air supply volume is controlled by controlling the electric butterfly valve 903 and the mine fresh air fan 901. The humidity data is collected by the air duct humidity sensor I824 and the air duct humidity sensor II825. The central processor judges whether it meets the air supply requirements and controls the solution flow through the solenoid valve XIII813 and the solenoid valve XIV814; through the air duct humidity sensor III826 and the air duct humidity sensor IV827, it is judged whether the solution heating device 205 is needed, and the solution concentration is controlled by controlling the solenoid valve IV804 and the solenoid valve V805. The dilute solution is heated to meet the requirements and the air supply humidity meets the standard.

[0040] like Figure 5 As shown, various sensors collect data and upload it to the central processor, which determines whether it meets the safety requirements through the control center. If it does not meet the safety requirements, the power supply of the dust removal system 5, the dehumidification system 2 and the cooling system 1 is cut off, and the exhaust is accelerated by controlling the electric butterfly valve 903, the fresh air fan controller 905 and the return air fan controller 907, and the backup fan is activated, and safety processing is performed at the same time.

Claims

1. A mine heat and humidity independent control system, characterized in that: The invention comprises a cooling system (1), a dehumidification system (2), a cooling tower (3), a mine water collection device (4), a dust removal system (5), a heat recovery system (6), a power system (7), an intelligent control system (8), and a ventilation system (9); the ventilation system (9) sequentially passes the mine airflow into the dust removal system (5), the dehumidification system (2), and the cooling system (1); the dust-containing high-temperature and high-humidity air enters the dust removal system (5), is processed by the dust removal system (5), outputs clean medium-temperature and high-humidity air and enters the dehumidification system (2); after being processed by the dehumidification system (2), outputs clean medium-temperature and low-humidity air and enters the cooling system (1); after being processed by the cooling system (1), clean low-temperature and dry air is obtained; the cooling tower (3) is a backup for the compression refrigeration cycle cooling of the cooling system (1). The equipment is used to ensure the normal operation of the cooling system (1); the heat recovery system (6) uses indirect heat exchange to collect waste heat from the cooling system (1), the dehumidification system (2), the dust removal system (5) and the mine water collection device (4), and uses low-grade energy to achieve solution regeneration and refrigerant cooling; the power system (7) provides circulation power for the water circulation of the cooling system (1), the dehumidification system (2), the mine water collection device (4) and the dust removal system (5) to maintain stable operation of the system; the intelligent control system (8) monitors the operating parameters of the cooling system (1), the dehumidification system (2), the dust removal system (5), the heat recovery system (6) and the ventilation system (9) as well as the mine parameters, so as to achieve adjustable air supply parameters, operating parameters and spare equipment, and realize safety warning through the central controller; The cooling system (1) comprises a compressor (101), a condenser (102), an expansion valve (103), and an air cooler (104); the dehumidification system (2) comprises a solution dehumidification device (201), a solution regeneration device (202), a concentrated solution tank (203), a dilute solution tank (204), and a solution heating device (205); the dust removal system (5) comprises a spray dust removal device (501) and a spray water collection device (502); the heat recovery system (6) comprises a dilute solution-refrigerant heat exchanger (601), a concentrated solution-refrigerant heat exchanger (602), a mine water waste heat recovery device (603), a dust removal water waste heat recovery device (604), and a solution heat exchanger (605); the power system (7) comprises a cooling water pump (701), a dilute solution pump (702), a concentrated solution tank (203), and a solution heating device (205); A solution pump (703), a mine water pump (704), and a spray water pump (705); the intelligent control system (8) includes a solenoid valve I (801) to a solenoid valve XIV (814), a pipeline temperature sensor I (815) to a pipeline temperature sensor V (819), an air duct temperature sensor I (820) to an air duct temperature sensor IV (823), and an air duct humidity sensor I (824) to an air duct humidity sensor IV (827); the ventilation system (9) includes a mine fresh air fan (901), a mine return air fan (902), an electric butterfly valve (903), a supply air static pressure sensor (904), a fresh air fan controller (905), a return air static pressure sensor (906), a return air fan controller (907), a supply air duct (908), and a return air duct (909).

2. A mine heat and humidity independent control system according to claim 1, characterized in that: The medium used in the internal pipeline of the cooling system (1) is a refrigerant, which works in accordance with the corresponding refrigeration cycle principle in the system to achieve the refrigeration function; the medium of the internal pipeline of the dehumidification system (2) is a dehumidification solution, which relies on the characteristics of the dehumidification solution to dehumidify the air; the medium of the internal pipeline of the mine water collection device (4) is mine water, which participates in the corresponding heat transfer process in the device; the internal medium of the dust removal system (5) is a dust removal aqueous solution, which utilizes the interaction between the dust removal aqueous solution and the dust-laden air to achieve the purpose of removing dust from the air; the water circuits of these four devices are independent of each other.

3. The independent heat and humidity control system for a mine according to claim 1, characterized in that: One end of the condenser (102) is connected to a pipeline temperature sensor I (815), an expansion valve (103), and an input end of an air cooler (104) in sequence through a pipeline; an output end of the air cooler (104) is connected to a first input end of a concentrated solution-refrigerant heat exchanger (602); a first output end of the concentrated solution-refrigerant heat exchanger (602) is connected to an input end of a compressor (101); an output end of the compressor (101) is connected to a first input end of a dilute solution-refrigerant heat exchanger (601); a first output end of the dilute solution-refrigerant heat exchanger (601) is connected to the condenser (102); an output end above the condenser (102) is connected to a solenoid valve I (801) is connected to one end of the cooling tower (3), and the other end of the cooling tower (3) is connected to an input end of the condenser (102) through a cooling water pump (701) and an electromagnetic valve III (803) in sequence, and the electromagnetic valve II (802) is connected between the input end and the output end above the condenser (102); the second output end of the concentrated solution-refrigerant heat exchanger (602) is connected to one end of the concentrated solution tank (203), and the other end of the concentrated solution tank (203) is connected to the input end of the solution dehumidification device (201) through an electromagnetic valve XIII (813); the output end of the solution dehumidification device (201) is connected to the solution heat exchanger (605) through a dilute solution pump (702). ), a first output end of the solution heat exchanger (605) is provided with a pipeline temperature sensor III (817), and the output end is divided into two paths, one of which is connected to the first input end of the dust removal water waste heat recovery device (604) through the electromagnetic valve X (810), and the other is connected to the second input end of the dilute solution-refrigerant heat exchanger (601) through the electromagnetic valve XI (811); the first output end of the dust removal water waste heat recovery device (604) is provided with an electromagnetic valve XII (812) and a pipeline temperature sensor II (816) in sequence, and then is divided into two paths, one of which is connected to the first input end of the mine water waste heat recovery device (603) through the electromagnetic valve VIII (808). The first output end of the mine water waste heat recovery device (603) is connected to the second input end of the dilute solution-refrigerant heat exchanger (601) through the solenoid valve VII (807); the output end of the spray dust removal device (501) is connected to the pipeline temperature sensor IV (818) and the spray water pump (705) in sequence, and finally connected to the second input end of the dust removal water waste heat recovery device (604); the second output end of the dust removal water waste heat recovery device (604) is connected to the spray water collection device (502);The second output end of the mine water gushing waste heat recovery device (603) is connected to one end of the mine water gushing collection device (4), and the other end of the mine water gushing collection device (4) is connected to the second input end of the mine water gushing waste heat recovery device (603) through a mine water pump (704), a pipeline temperature sensor V (819), and an electromagnetic valve IX (809) in sequence; the second output end of the dilute solution-refrigerant heat exchanger (601) is divided into two paths, one of which is connected to the input end of the dilute solution tank (204) through an electromagnetic valve IV (804), and the other is connected to the input end of the dilute solution tank (204) through an electromagnetic valve IV (804). The circuit is connected to the solution heating device (205) and the input end of the weak solution tank (204) in sequence through the electromagnetic valve V (805); the output end of the weak solution tank (204) is connected to the input end of the solution regeneration device (202) through the electromagnetic valve XIV (814); the output end of the solution regeneration device (202) is connected to the second input end of the solution heat exchanger (605) through the concentrated solution pump (703), and the second output end of the solution heat exchanger (605) is connected to the second input end of the concentrated solution-refrigerant heat exchanger (602).

4. The mine heat and humidity independent control system according to claim 1, characterized in that: The air supply duct (908) is connected to the fresh air inlet, the spray dust removal device (501), the solution dehumidification device (201), the air cooler (104), the mine fresh air fan (901) and the air supply port in sequence from left to right; the spray dust removal device (501), the solution dehumidification device (201) and the air cooler (104) are connected in air paths; an electric butterfly valve (903), an air duct temperature sensor I (820) and an air duct humidity sensor I (824) are arranged at the fresh air inlet; an air duct temperature sensor II (821) and an air duct humidity sensor II (825) are arranged at the air supply port; the mine fresh air fan (901) is connected to the fresh air fan controller (905); and an air supply static pressure sensor (904) is connected between the air supply port and the rear of the mine fresh air fan (901); The return air duct (909) is connected to the return air port, the solution regeneration device (202), the mine return air fan (902), and the exhaust port in sequence from right to left; an air duct humidity sensor III (826) and an air duct temperature sensor III (822) are provided at the return air port, and an air duct temperature sensor IV (823) and an air duct humidity sensor IV (827) are provided at the exhaust port; the mine return air fan (902) is connected to the return air fan controller (907), and a return air static pressure sensor (906) is connected at the exhaust port and the rear of the mine return air fan (902).

5. The independent heat and humidity control system for a mine according to claim 1, characterized in that: The dehumidification solution used in the dehumidification system (2) is a 1:1 mixed solution of lithium chloride and calcium chloride, and the dehumidification solution device is made of zinc-nickel alloy material.

6. A control method for a mine heat and humidity independent control system according to any one of claims 1 to 5, characterized in that: After the refrigerant is cooled by the condenser (102), it enters the expansion valve (103) through the pipeline, then enters the air cooler (104) to cool the mine air flow, then enters the concentrated solution-refrigerant heat exchanger (602) and enters the compressor (101) to complete the compression process to form a high-temperature refrigerant, then enters the dilute solution-refrigerant heat exchanger (601) and enters the condenser (102) to complete the entire compression refrigeration cycle; the cooling tower (3) serves as the cold end input of the condenser (102) to cool the refrigerant in the compression refrigeration cycle; the pipeline temperature sensor I (815) monitors whether the refrigerant temperature meets the operating requirements. If not, the solenoid valve I (801) and the solenoid valve III (803) are opened to use the cooling tower (3) to cool down, and the cooling water flow is adjusted by adjusting the solenoid valve II (802) to achieve adjustable cooling of the cooling water.

7. The control method according to claim 6, characterized in that: The dehumidification system (2) is combined with the heat recovery system (6) to complete the regeneration of the dehumidification solution. The input end of the solution dehumidification device (201) is a concentrated solution, and the output end is a dilute solution, and the air is dehumidified. The input end of the solution regeneration device (202) is a concentrated solution, and the output end is a concentrated solution. The dilute solution pump (702) and the concentrated solution pump (703) provide the solution dehumidification regeneration cycle power. The dilute solution at the output end of the solution dehumidification device (201) passes through the dilute solution pump (702) and enters the solution heat exchanger (605) to exchange with the concentrated solution at the output end of the solution regeneration device (202). Heat exchange, with the concentrated solution as the heat source, realizes primary waste heat recovery; the dilute solution output from the solution heat exchanger (605) enters the dust removal water waste heat recovery device (604) and performs secondary waste heat recovery with the spray solution output from the spray dust removal device (501), with the spray solution as the heat source; a portion of the solution output from the dust removal water waste heat recovery device (604) enters the mine water gushing waste heat recovery device (603) and performs tertiary waste heat recovery with the mine water gushing device (4); the treated dilute solution enters the dilute solution-refrigerant heat exchanger (601) to complete the fourth waste heat recovery, and obtain a high-temperature dilute solution; After the high-temperature dilute solution enters the dilute solution tank (204) through the solenoid valve IV (804), it enters the solution regeneration device (202) to complete solution regeneration and obtain a high-temperature concentrated solution; the high-temperature concentrated solution passes through the concentrated solution pump (703) and enters the solution heat exchanger (605) and the concentrated solution-refrigerant heat exchanger (602) in sequence to complete heat exchange and obtain a concentrated solution that meets the requirements. The concentrated solution enters the concentrated solution tank (203) for storage, and enters the solution dehumidification device (201) through the control of the solenoid valve XIII (813) to dehumidify the air and become a dilute solution. The dilute solution finally serves as the output end of the solution dehumidification device (201) and enters the dilute solution pump (702) to complete the closed cycle of solution dehumidification-regeneration; The pipeline temperature sensor II (816) is used to monitor the temperature of the dehumidification solution. When the heat recovery system (6) cannot meet the required working conditions, the intelligent control system (8) controls the opening of the solenoid valve V (805) to allow the dilute solution to enter the solution heating device (205) so that the dehumidification solution meets the required regeneration temperature. By controlling the solenoid valve XIII (813) and the solenoid valve XIV (814), the flow rate of the dehumidification solution is controlled to meet the dehumidification requirements under different wet loads.

8. The control method according to claim 6, characterized in that: The heat recovery system (6) is combined with the intelligent control system (8) to realize flexible conversion of multiple heat recovery devices; a pipeline temperature sensor III (817) is set at the first output end of the solution heat exchanger (605) to monitor the temperature of the dilute solution, a pipeline temperature sensor IV (818) monitors the temperature of the spray water, and a pipeline temperature sensor V (819) monitors the temperature of the mine water; if the temperature of the dilute solution is lower than the temperature of the spray water and the temperature of the mine water, and the temperature of the spray water is lower than the temperature of the mine water, the solenoid valve VI (806) and the solenoid valve VIII (80 8) Open the solenoid valve X (810) and the solenoid valve XII (812), close the solenoid valve VII (807) and the solenoid valve XI (811), and allow the dilute solution to enter the dust removal water waste heat recovery device (604) and the mine water waste heat recovery device (603) in sequence to complete the dehumidification solution preheating process; if the temperature of the dilute solution is lower than the spray water temperature and the mine water temperature, and the spray water temperature is higher than the mine water temperature, open the solenoid valve VII (807), the solenoid valve X (810), and the solenoid valve XII (812), and close the solenoid valve VI (80 6), solenoid valve VIII (808), solenoid valve XI (811), so that the dilute solution enters the dust removal water waste heat recovery device (604) in sequence to complete the preheating of the dilute solution, skipping the mine water waste heat recovery device (603); if the temperature of the dilute solution is higher than the spray water temperature and lower than the mine water temperature, the solenoid valve X (810) and solenoid valve XII (812) are closed, and the solenoid valve VI (806), solenoid valve VII (807), solenoid valve VIII (808), and solenoid valve XI (811) are opened to allow the dilute solution to directly enter the mine water. The dilute solution is preheated in the mine water waste heat recovery device (603), and the dust removal water waste heat recovery device (604) is skipped; if the dilute solution temperature is higher than the spray water temperature and the mine water temperature, the solenoid valve XI (811) is opened, and the solenoid valve VI (806), the solenoid valve VII (807), the solenoid valve VIII (808), the solenoid valve IX (809), the solenoid valve X (810), and the solenoid valve XII (812) are closed, so that the dilute solution directly enters the dilute solution-refrigerant heat exchanger (601), and the dehumidification solution preheating process is skipped.

9. The control method according to claim 6, characterized in that: The intelligent control system (8) and the ventilation system (9) are combined to realize air supply parameter control; temperature data is collected through air duct temperature sensor I (820) and air duct temperature sensor II (821), uploaded to the central processor and judged whether it meets the air supply temperature requirement, and the air supply volume is controlled by controlling the electric butterfly valve (903) and the mine fresh air fan (901); humidity data is collected through air duct humidity sensor I (824) and air duct humidity sensor II (825), and the central processor judges whether it meets the air supply requirement and controls the solution flow through electromagnetic valve XIII (813) and electromagnetic valve XIV (814); whether the solution heating device (205) needs to be used is judged through air duct humidity sensor III (826) and air duct humidity sensor IV (827), and the solution concentration is controlled by controlling electromagnetic valve IV (804) and electromagnetic valve V (805), and the dilute solution is heated to meet the requirement, so that the air supply humidity meets the standard.

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