Cooling system is reclaimed in the mine heat radiation
Technical field
The present invention relates to cooling system, relate in particular to a kind of refrigeration cool-down system that is applied to hot operation places such as coal, mining.
Background technology
The colliery is one of main energy sources of China, and along with the development of society and the reinforcement day by day of coal resources exploitation, the mining depth of mine constantly increases.At present, each country of mainly mining of the world gets into deep mining in succession, the progressively increase of mining depth, and ground temperature also increases.Oneself reaches 1400 ~ 1500m German and more Muscovite mining degree of depth; South Africa Ka Lidunweier exploitation of gold deposit depth 3800m, oneself reaches the following 4146m in the face of land vertical shaft shaft bottom; The mine of the ultra km of Canada has 30, and the U.S. has 11.China's coal-mine 1980 annual mining depths are 288m, have reached 428m to nineteen ninety-five, and present mining depth increases with the speed of 8 ~ 12m every year on average, adopt the dark 1000m of surpassing mine oneself have tens of right.
According to survey data all over the world; Whole world mean ground temperature gradient is about 3 ℃/100m; According to national mine elevated temperature heat evil reconnaissance information statistics, heat evil has in various degree appearred in the existing at present 65 pairs of mines of China, and wherein the getting working face temperature of 38 pairs of mines is above 30 ℃.According to China's coalfield ground temperature measurement statistics; Hundred meter temperature gradients are 2 ~ 4 ℃/100m, and for example table mountain Ba Kuang mean ground temperature gradient is 3.4 ℃/100m, and the primitive rock temperature of-430m level is 33.2 ~ 33.6 ℃; The temperature of getting working face is at 29 ~ 32 ℃, and the highest oneself reaches 34 ℃.Regulation is made to downhole temperature in countries in the world, and on January 1st, 2005 was played new " safety regulations in coal mine " regulation of enforcement in by China, and mine main getting working face air themperature must not surpass 26 ℃, and the air themperature of electromechanical equipment chamber must not be above 30 ℃.Under the deep mining condition, ground temperature constantly raises, and the harm of heat evil and toxic and harmful, dust also increases day by day.These harm have a strong impact on the efficient of operating worker and their physical and mental health, even cause the generation of some mine serious accidents probably, have brought great threat for the safety in production and the daily management thereof of mine.
The measure of administering underground thermal pollution mainly contains two kinds: a kind of is non-mechanical refrigeration cooling measure, and another kind is to adopt the mechanical refrigeration cooling measure.Dual mode all is on the basis of mine ventilation, makes mine underground work place meteorological condition reach required standard and the cooling measure taked.The former claims the production technique measure again, mainly comprises increasing ventilation, the rational developing of selection and ventilating system, reform draft type, coal winning technology, coal-bed flooding etc., but mainly is meant venting practice; The latter can't reach requirement or the uneconomical measure of taking when reasonable at the former.
Theoretical research and production practices fully show: increase the getting working face air quantity and reduce temperature, improving climatic condition in mine is a kind of both economical effective means, should pay the utmost attention to.But the degree that air quantity increases but receives the constraint of many condition of technology and economy, and roadway ventilation section receives the restriction of the highest permission wind speed; If will keep underground airflow velocity certain; Then must enlarge roadway section or roadway quantity, the driving maintenance cost significantly increases thereupon, and the potentiality that continue increase getting working face ventilation are limited; And the heat of down-hole all slatterns, and can not obtain utilizing.
Summary of the invention
In order to solve the problem of mine downhole cooling difficulty and heat waste, the invention provides a kind of mine heat radiation and reclaim cooling system.
The present invention for realizing the technical scheme that above-mentioned purpose adopted is: cooling system is reclaimed in the mine heat radiation; Comprise closed cooling tower, heat-energy recovering apparatus, heat-energy recovering apparatus water circulating pump, pressure exchanger, pressure exchanger water circulating pump, refrigeration cool-down device, blower fan and downhole cooling unit water circulating pump; The supplementing water water inlet end of closed cooling tower is connected with the water source through pipeline; The cooling water inlet end of closed cooling tower is connected with the water return pipeline of heat-energy recovering apparatus water circulating pump with the pressure exchanger water circulating pump with valve through pipeline; The cooling water side of closed cooling tower is connected with the supply channel of heat-energy recovering apparatus water circulating pump with the pressure exchanger water circulating pump with valve through pipeline; The heat-energy recovering apparatus water circulating pump is connected with heat-energy recovering apparatus; Pressure exchanger one end is connected with heat-energy recovering apparatus with valve through pipeline, and the other end is connected with the refrigeration cool-down device with valve through pipeline, and the pressure exchanger water circulating pump is installed between pressure exchanger and the heat-energy recovering apparatus; Downhole cooling unit water circulating pump is installed between refrigeration cool-down device and the pressure exchanger, and refrigeration cool-down device air intake is installed blower fan.
Also comprise hot water, hot water is connected with the heat-energy recovering apparatus water circulating pump.
Also comprise clear water tank, clear water tank is installed between water source and the heat-energy recovering apparatus water circulating pump.
Also comprise water treatment facilities, water treatment facilities is installed between water source and the clear water tank.
Cooling system is reclaimed in mine heat radiation of the present invention, all adopts modular design, has gathered the advantage of centralized refrigeration and distributing refrigeration, can reach good downhole cooling effect.Adopt the energy recovery technology simultaneously; The heat that refrigeration machine produces is all recycled; The heat that reclaims can be had a bath with hot water and Office Area heating in winter for ground provides, and can save boiler fully, and the water treatment system that this system carries can utilize the waste water of sewage treatment plant's discharging to produce pure water or demineralized water; The water of producing can be reached the energy-conserving and environment-protective requirement by the systemic circulation utilization.
Description of drawings
Fig. 1 is that the cooling system schematic diagram is reclaimed in mine heat radiation of the present invention.
The specific embodiment
It is as shown in Figure 1 that the cooling system principle is reclaimed in mine heat radiation of the present invention; System is divided into the two large divisions: aboveground part and down-hole part; Wherein aboveground part comprises closed cooling tower 4, heat-energy recovering apparatus 5, water treatment facilities 1, heat-energy recovering apparatus water circulating pump 8, pressure exchanger water circulating pump 6, clear water tank 2, hot water 3, pipeline and Self controlling valve etc., and the down-hole part is by pressure exchanger 9, refrigeration cool-down device 7, blower fan 11, downhole cooling unit water circulating pump 10, pipeline and Self controlling valve etc.Water source 12 is connected with the water inlet end of water treatment facilities 1 through pipeline, and the water side of water treatment facilities 1 is connected with clear water tank 2 with closed cooling tower 4 with pipeline through valve, and clear water tank 2 water sides are connected with heat-energy recovering apparatus water circulating pump 8 with closed cooling tower 4.Heat-energy recovering apparatus water circulating pump 8 is connected with heat-energy recovering apparatus 5; The supplementing water water inlet end of closed cooling tower 4 is connected with water source 12 through pipeline; The cooling water inlet end of closed cooling tower 4 is connected with the water return pipeline of heat-energy recovering apparatus water circulating pump 8 with pressure exchanger water circulating pump 6 with valve through pipeline; The cooling water side of closed cooling tower 4 is connected with the supply channel of heat-energy recovering apparatus water circulating pump 8 with pressure exchanger water circulating pump 6 with valve through pipeline; Pressure exchanger 9 one ends are connected with heat-energy recovering apparatus 5 with valve through pipeline; The other end is connected with refrigeration cool-down device 7 with valve through pipeline; Pressure exchanger water circulating pump 6 is installed between pressure exchanger 9 and the heat-energy recovering apparatus 5, and downhole cooling unit water circulating pump 10 is installed between refrigeration cool-down device 7 and the pressure exchanger 9, and refrigeration cool-down device 7 air intakes are installed blower fan 11.Hot water 3 is connected with heat-energy recovering apparatus water circulating pump 8.
It is following that the cooling system operation principle is reclaimed in the mine heat radiation: refrigeration cool-down device 7 can move; When 7 work of down-hole refrigeration cool-down device; Transmit signal through the communication function of down-hole electric control system and give aboveground electric control system; Aboveground electric control system control closed cooling tower 4, heat-energy recovering apparatus 5, heat-energy recovering apparatus water circulating pump 8,6 operations of pressure exchanger water circulating pump; Treat that the whole safe operation signal feedback of the said equipment are after the electric control system of down-hole; The down-hole electric control system is issued downhole cooling unit water circulating pump 10 and blower fan 11 with control instruction, treat that downhole cooling unit water circulating pump 10 and blower fan 11 start after, refrigeration cool-down device 7 is formal to start operation.At this moment; Refrigeration cool-down device 7 inner compressors begin refrigeration; The low-pressure liquid refrigerant gets into the evaporimeter vaporization in the refrigeration cool-down device 7, and vaporescence is an endothermic process, can take away local a large amount of heat energy fast; This moment, high temperature was distinguished and admirable through blower fan 11 entering evaporimeters, had finally promptly realized the effect of refrigeration cool-down in the evaporator outlet side.The steam state refrigerant pipeline of vaporization is got back to the main compressor of refrigeration cool-down device 7 fully, is compressed to gases at high pressure once more, and the condenser that gets into refrigeration cool-down device 7 liquefies; The process of liquefaction is an exothermic process, and the heat energy that is discharged is brought to pressure exchanger 9 circulations by the current of downhole cooling unit water circulating pump 10, and the water of downhole cooling unit water circulating pump 10 and the water at low temperature in the pressure exchanger 9 are carried out heat exchange; Its temperature is raise the water at low temperature of heat transferred pressure exchanger 9, the water at low temperature of pressure exchanger 9 is brought to cool cycles in the evaporimeter of heat-energy recovering apparatus 5 by aboveground pressure exchanger water circulating pump 6, and heat is absorbed by heat-energy recovering apparatus 5; Heat after the absorption is delivered in the hot water 3 by heat-energy recovering apparatus water circulating pump 8 and is produced hot water, also can directly be used for heating and domestic water, and 40 ~ 55 ℃ of domestic hot-waters and heating can be provided in the hot water 3; After water in the hot water 3 was produced and satisfied the demand, hot water 3 inlet valves were closed, closed cooling tower 4 Inlet and outlet water valve opens; Closed cooling tower 4 work; Unwanted heat is discharged in the atmosphere, and the supplementing water of domestic water and closed cooling tower 4 is all replenished by the water in the water source 12, if the water in the water source 12 is water purification; Then do not need the purification of water treatment facilities 1; If the water at water source 12 is waste water or sewage, then to handle through water treatment facilities 1, the working centre of whole system is the cooling that realizes underground air through the vaporization of 7 pairs of refrigerants of refrigeration cool-down device and two processes that liquefy; The transmission of heat energy and shift through circulating water flow the heat energy of down-hole is continued to transfer to pressure exchanger 9 sides; Finally heat energy is transformed and promotes, be applied to the domestic hot-water, so just can save boiler and produce hot water via heat-energy recovering apparatus 5; Reduced emission of carbon-dioxide when practicing thrift fire coal, unnecessary heat is through closed cooling tower 4 dischargings.The heat that needs is many more, and the waste heat of closed cooling tower 4 dischargings is just few more, and whole system just embodies energy-saving effect more, and energy utilization rate is just high more.