CN112013568A - Mine water source refrigeration equipment - Google Patents
Mine water source refrigeration equipment Download PDFInfo
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- CN112013568A CN112013568A CN202010966020.XA CN202010966020A CN112013568A CN 112013568 A CN112013568 A CN 112013568A CN 202010966020 A CN202010966020 A CN 202010966020A CN 112013568 A CN112013568 A CN 112013568A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 97
- 238000005057 refrigeration Methods 0.000 title claims abstract description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 10
- 239000010935 stainless steel Substances 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 37
- 230000004224 protection Effects 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 8
- 238000007791 dehumidification Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 26
- 239000007789 gas Substances 0.000 description 17
- 239000011521 glass Substances 0.000 description 6
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
- E21F1/085—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators using compressed gas injectors
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F3/00—Cooling or drying of air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Hydrology & Water Resources (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a mine water source refrigeration device which comprises a vehicle-mounted movable water source screw unit, a buffer filtering water tank, a distribution box, a movable air pipe, a water pump and a stainless steel hose, wherein the distribution box can be remotely displayed and controlled through a Siemens PLC-200SMART and a touch screen distribution box. The invention provides the device for cooling (below 28 ℃) and dehumidifying the working surface of the mine tunnel, and provides fresh air, thereby meeting the environmental requirements of the tunnel excavation working surface on temperature, dehumidification and fresh air, improving the working environment of miners, and improving the production efficiency and safety.
Description
Technical Field
The invention relates to the technical field of mine refrigeration, in particular to mine water source refrigeration equipment.
Background
At present, in the operation of a plurality of mine tunnels, because the underground environment temperature is high (35 ℃), the humidity is 100%, the tunnels are not ventilated, the excavation working face needs to be continuously moved, workers are difficult to work for a long time, the production efficiency is low, and the safety and the health of the workers are difficult to ensure, a refrigeration device is needed to cool (below 28 ℃) and dehumidify the working face and provide fresh air, and the general air-conditioning refrigeration device is difficult to meet the environmental requirements of the excavation working face of the tunnels on the temperature and the fresh air.
Disclosure of Invention
The invention aims to make up the defects of the prior art and provides a mine water source refrigeration device, which takes away the heat of a mine tunnel by using abundant underground water of a mine as a cooling water source, provides low-temperature fresh air and dehumidification for the excavation working face of the mine tunnel, improves the environment of high temperature, high humidity and oxygen deficiency of the excavation working face and solves the problem that the common air-conditioning refrigeration device in the prior art is difficult to realize.
The invention is realized by the following technical scheme:
a mine water source refrigeration plant which is characterized in that: the system comprises a vehicle-mounted movable water source screw unit, wherein the vehicle-mounted movable water source screw unit comprises a screw compressor, an oil separator, a water-cooled condenser, a drying filter, a first sight glass, a second electromagnetic valve, an electronic expansion valve and an evaporator, R134a high-pressure gas is discharged from the output end of the screw compressor and is connected with the input end of the oil separator through a pipeline, the output end of the oil separator is connected with the input end of a first stop valve, the output end of the first stop valve is connected with the input end of a refrigerant of the water-cooled condenser through a pipeline, the R134a high-pressure gas is changed into liquid from gas in the water-cooled condenser through heat exchange with underground water (21 ℃), the output end of the refrigerant of the water-cooled condenser is connected with the input end of a second stop valve through a pipeline, the output end of the second stop valve is, look liquid mirror an output and be connected with stop valve three input, stop valve three output be connected with two inputs of solenoid valve, two outputs of solenoid valve pass through the pipeline and be connected with the electronic expansion valve input, the electronic expansion valve output pass through the pipeline and be connected with stop valve four inputs, liquid R134a becomes low temperature low pressure liquid through the electronic expansion valve throttle, four outputs of stop valve pass through the pipeline and be connected with the evaporimeter input, the low temperature low pressure liquid of R134a evaporates the heat absorption and becomes gaseous in the evaporimeter, the evaporimeter pass through the pipeline and be connected with five inputs of stop valve, five outputs of stop valve pass through the pipeline and be connected with screw compressor's input, low temperature low pressure R134a is gaseous to get back to screw compressor compression circulation. The safety valve is connected with the water-cooled condenser, and when the pressure safety value exceeds a set value, the safety valve is opened to reduce the pressure.
In the vehicle-mounted mobile water source screw unit, high-pressure R134a gas is subjected to oil-gas separation in an oil separator, separated oil passes through the oil return output end of the oil separator and is in input connection with a first electromagnetic valve through a pipeline, the output end of the first electromagnetic valve is connected with the input end of a second liquid viewing mirror, the output end of the liquid viewing mirror is connected with the oil return opening of the screw compressor through a pipeline, and when the first electromagnetic valve is powered on and opened, the oil of the oil separator returns to the screw compressor to lubricate the screw compressor.
The liquid state of R134a divides one way through the three output end pipelines of stop valve and connects six input ends of stop valve, six output ends of stop valve are connected through pipeline and three input ends of solenoid valve, three output ends of solenoid valve are connected with screw compressor hydrojet cooling hole through the pipeline, and when the three circular telegrams of solenoid valve were opened, six keep certain aperture of stop valve, liquid R134a gets back to screw compressor through six throttles of stop valve and cools off.
The underground water pipe output end of the mine tunnel is connected with the input end of a liquid storage filter, the underground water containing silt is precipitated and filtered by the liquid storage filter, the output end of the liquid storage filter is connected with the input end of a water pump, the output end of the water pump is connected with the input end of a quick coupling through a stainless steel hose I, the output end of the quick coupling is connected with the input end of a water path stop valve through a water pipe, the output end of the water path stop valve is connected with the input end of a Y-shaped filter through a water pipe, the underground water is further filtered by the Y-shaped filter, the output end of the Y-shaped filter is connected with the water path input end of a water-cooled condenser through a water pipe, the underground water is subjected to gas heat exchange with high-pressure R134a in the water-, the output end of the second quick connector is connected with the output end of the underground water pipe of the mine tunnel through a second stainless steel hose, and high-temperature water flows into the underground water pipe of the mine tunnel.
In the vehicle-mounted movable water source screw unit, a cold air supply system supplies air by adopting a double-air-channel high-excess-pressure fan, one path of the cold air supply system is connected with an input end of a quick air port through a pipeline by an output end of a centrifugal fan, and an output end of the quick air port is connected with an input end of an air outlet through a first air pipe; the other route is connected with the output end of the centrifugal fan II through a pipeline and a quick air port II, and the output end of the quick air port II is connected with the input end of the air outlet II through an air pipe II.
The quick air port is a joint with a pipe clamp lock catch; the pipeline is a rubber plastic hose, the diameter of the hose is phi 100mm, the length of the hose is 100m, pipe clamps are arranged on the pipeline every 1m, and the pipeline is provided with slip rings and can move on steel wires; the air outlet is provided with a shutter and can adjust the air outlet direction.
The vehicle-mounted movable water source screw unit is arranged on a bottom plate of the rail-mounted mine car, and the refrigerating system, the power supply wire and the stainless steel hose can move along with the mine car.
Dampproofing, dust cover have been equipped with to on-vehicle portable water source screw rod unit outside, and five panels are connected by the buckle, and the instrument of exempting from is dismantled, the maintenance installation of being convenient for, and the transparent organic glass of operation part dustcoat is dampproofing.
Among the on-vehicle portable water source screw rod unit, the block terminal adopts three-way three-phase system power, guarantees mine power consumption safety, installs the automatic heating formula fan in the block terminal to guarantee electrical components dehumidification, the operation adopts touch-sensitive screen and emergency switch, and has 485 data interface, can remote display and operation.
The screw compressor is a water source screw compressor, and the refrigerant of the screw compressor is R134 a. The invention adopts Siemens PLC-200SMART and touch screen man-machine operation, and monitors parameters such as temperature, pressure and the like of the unit and starts and stops the unit through 485 interface remote communication, and when the unit works, the water pump is started first, and then the screw compressor and the centrifugal fan are started.
The PLC-200SMART control is adopted in the control, and an ALCO expansion valve driver is used for controlling the electronic expansion valve 17 (EX 8), detecting the return air pressure and temperature of the system, and adjusting the refrigerating capacity and the air supply temperature.
The invention exchanges heat with underground water (21 ℃) through a water-cooling condenser by a special refrigerant R134a, low-temperature fresh air is sent and dehumidified by a high-pressure centrifugal fan I and a high-pressure centrifugal fan II through a rubber and plastic air duct I and a rubber and plastic air duct II, the high-pressure centrifugal fan I and the rubber and plastic air duct II move along with an excavation working face, and mine water source refrigeration equipment moves along with a mine car.
The unit control adopts a Siemens PLC-200SMART controller and a touch screen, a Schneider air switch and an alternating current contactor are adopted, a high-speed high-pressure fan is adopted as an air supply centrifugal fan, the air supply range is 100m at most, a 4-stage adjustable load is adopted as a compressor, a water-cooled condenser exchanges heat with underground water (21 ℃), a refrigeration system adopts high-pressure protection, low-pressure protection, differential pressure protection, overload protection, power protection and various protections of the system, and the refrigerating system is provided with a 485 interface and can be controlled in a modularized mode and monitored remotely.
The invention has the advantages that:
the invention provides low-temperature fresh air and dehumidification, can control the working condition environment to be below 28 ℃, is used for producing the excavation face of the mine tunnel, improves the high-temperature, high-humidity and anoxic environment of the excavation working face, and improves the production efficiency and the personnel safety.
Drawings
Fig. 1 is a schematic diagram and an overall structural diagram of the present invention.
Detailed Description
As shown in fig. 1, a mine water source refrigeration equipment is characterized in that: including on-vehicle portable water source screw rod unit, buffering filtration water tank, the block terminal, portable tuber pipe, the water pump, stainless steel hose wherein: the vehicle-mounted movable water source screw machine set comprises a screw compressor 1 (CSH 8583-125Y), wherein the output end of the screw compressor 1 (CSH 8583-125Y) is connected with the first 7 input ends of a stop valve through a compressor exhaust DN76 copper pipe, high-temperature and high-pressure R134a gas is connected with the input end of a water-cooled condenser 8 through the first 7 output end of the stop valve, high-temperature and high-pressure R134a gas is cooled and released heat at the water-cooled condenser 8 to become liquid, the output end of the water-cooled condenser 8 is connected with the second 10 input end of the stop valve through a pipeline, the output end of the second 10 output end of the stop valve is connected with the 11 input end of a drying filter through a first 12 input end of a sight glass, the first 12 output end of the sight glass is connected with a third 13 input end of the stop valve, the third 13 output end of the stop valve, the liquid state of R134a becomes low pressure liquid through electronic expansion valve 17 throttle, electronic expansion valve 17 output pass through the pipeline and be connected with the fourth 18 input of stop valve, the fourth 18 output of stop valve pass through the pipeline and be connected with evaporimeter 19 input, low pressure R134a liquid absorbs heat at evaporimeter 19 and becomes low temperature gas, evaporimeter 19 pass through the pipeline and be connected with five 22 inputs of stop valve, five 22 outputs of stop valve pass through the pipeline and be connected with screw compressor 1's input, low temperature gas gets back to screw compressor 1 and compresses circularly. The safety valve 9 is connected with the water-cooled condenser 8, and when the pressure safety value exceeds a set value, the safety valve 9 is opened to reduce the pressure. A five stop valve 22 and a low-pressure protection switch 23 are sequentially arranged between the evaporator 19 and the screw compressor 1; an oil pressure difference switch 2 is arranged between the input end and the output end of the screw compressor 1. A high-pressure protection switch 3 is arranged on a pipeline between the output end of the screw compressor 1 and the input end of the oil separator 4.
In the vehicle-mounted movable water source screw unit, high-pressure R134a gas is separated from oil in an oil separator 4, the oil return output end of the oil separator 4 is in input connection with a first electromagnetic valve 5 through a pipeline, the output end of the first electromagnetic valve 5 is connected with the input end of a second liquid viewing mirror 6, the output end of the second liquid viewing mirror 6 is connected with the oil return opening of the screw compressor 1 through a pipeline, and when the first electromagnetic valve 5 is powered on and opened, lubricating oil returns to the screw compressor.
The liquid of R134a divides one way through the three 13 output end pipelines of stop valve and connects the six 14 input ends of stop valve, the six 14 output ends of stop valve are connected with three 15 input ends of solenoid valve through the pipeline, three 15 output ends of solenoid valve are connected with the hydrojet cooling port of screw compressor through the pipeline, opens when three 15 circular telegrams of solenoid valve, and certain aperture is set for to six 14 stop valves, and refrigerant R134a liquid cools off screw compressor 1 through six 14 throttle decompression of stop valve.
The underground water pipe output end of the mine tunnel is connected with the input end of a liquid storage filter 32, the underground water containing silt is filtered and reserved for a certain amount of underground water through the liquid storage filter 32, the output end of the liquid storage filter 32 is connected with the input end of a water pump 33 through a water pipe, the output end of the water pump 33 is connected with the input end of a quick connector 28 through a stainless steel hose 30, the output end of the quick connector 28 is connected with the input end of a waterway stop valve 27 through a water pipe, the output end of the waterway stop valve 27 is connected with the input end of a Y-shaped filter 26 through a water pipe, the underground water is further filtered through the Y-shaped filter 26, the output end of the Y-shaped filter 26 is connected with the waterway input end of a water-cooled condenser 8 through a water pipe, the underground water (21 ℃) is in the water-cooled, the output end of the second waterway stop valve 25 is connected with the input end of the second quick connector 29 through a pipeline, and the output end of the second quick connector 29 is connected with the output end of the underground water pipe of the mine tunnel through a second stainless steel hose 31 to discharge hot water (26 ℃).
In the vehicle-mounted movable water source screw unit, a cold air supply system adopts a double-air-channel and high-excess-pressure fan for supplying air, one path of cold air is connected with the input end of a first quick air port 34 through a pipeline by the output end of a first centrifugal fan 20 of an evaporator 19, and the output end of the first quick air port 34 is connected with the input end of a first air outlet 38 through a first air pipe 36; the output end of the second centrifugal fan 21 of the other route evaporator 19 is connected with the second quick air port 35 through a pipeline, and the output end of the second quick air port 35 is connected with the input end of the second air outlet 39 through a second air pipe 37.
The first quick air port, the second quick air port 34 and the third quick air port 35 are connectors with pipe clamp lock catches; the first pipeline, the second pipeline and the third pipeline 36 and 37 are rubber and plastic hoses, the diameter of each hose is phi 100mm, the length of each hose is 100m, pipe clamps are arranged on the pipelines every 1m, sliding rings are arranged on the pipelines, and the pipelines can move on steel wires; the first air outlet, the second air outlet 38 and the air outlet 39 are provided with louvers, and the air outlet direction can be adjusted.
In the vehicle-mounted movable water source screw unit, a refrigeration system is arranged on the bottom plate of a rail-mounted mine car 40, and the refrigeration system, a power cable and a stainless steel hose can move along with the mine car 40.
In the on-vehicle portable water source screw rod unit, refrigerating system outside is equipped with dampproofing, dust cover 41, and five panels are connected by the buckle, exempt from the instrument and dismantle, and the maintenance installation of being convenient for, the transparent organic glass of operation part dustcoat is dampproofing.
Among the on-vehicle portable water source screw rod unit, block terminal 24 adopts three-way three-phase system power, guarantees mine power consumption safety, installs the automatic heating formula fan in the block terminal 24 to guarantee electrical components dehumidification, the operation adopts touch-sensitive screen and emergency switch, and has 485 data interface, can remote display and operation.
The screw compressor 1 is a water source screw compressor, and the refrigerant of the screw compressor 1 is R134 a.
The invention adopts Siemens PLC-200SMART and a touch screen to form a distribution box which is used for receiving signals of temperature and pressure measured in a system and realizing the control of the system.
The specific working process of the invention is as follows:
when the equipment works, firstly, the air outlet temperature T1(8 ℃) of the evaporation fans 20 and 21 is set according to the requirements of users, various protection parameters such as pressure, current, exhaust temperature and the like and working parameters of an electronic expansion valve are set, a water pump 33 is started after the equipment is electrified, 2-3 minutes are delayed in sequence, the evaporation centrifugal fans 20 and 21 and a system main circuit electromagnetic valve II 16 are started, when the air outlet temperature T is more than T1(8 ℃), a screw compressor 1 is started in a star-triangle mode, the screw compressor 1 starts to refrigerate, after 3 minutes, the working load is gradually increased from 25% -50% -75% -100%, when the air outlet temperature T2 of the evaporation fans is less than the set temperature T1-3 ℃ (5 ℃), the screw compressor 1 is gradually reduced from load and stopped from 100% -75% -50%, and the temperature and the humidity of a refrigeration tunnel are usually higher, the loss of cold energy is large, and the host machine only can load or unload and cannot stop. When the system is protected, the system gives an alarm and stops the screw compressor 1 and the centrifugal fan fans I, II, 20 and 21 to continuously operate and supply air, when the exhaust temperature of the system is too high and is larger than or equal to 105 ℃, the third liquid spraying electromagnetic valve 15 is opened, the cooling liquid returns to the liquid spraying opening of the high-temperature screw compressor 1 through the liquid spraying stop valve six 14, and the exhaust temperature of the screw compressor 1 is reduced. When the screw compressor 1 works, the first electromagnetic valve 5 is electrified for 10 seconds and is powered off for 10 seconds, and oil is supplied to the screw compressor 1 discontinuously.
The operation of the unit is controlled by a Siemens PLC-200SMART, a touch screen, an alternating current contactor and a temperature and pressure sensor through the distribution box, and a user can use a 485 communication line to connect a unit controller if the user needs remote control, control and modify the operation parameters of the unit and manage energy.
In a normal state, after the unit is powered on, a starting instruction is given through a touch screen on a distribution box, a circulating water pump 33 is started, a first centrifugal fan motor, a second centrifugal fan motor, a centrifugal fan motor and a circulating water pump 21 are started, the screw compressor 1 is started after 2-3 minutes, R134a refrigerant enters an oil separator 4 through an exhaust port of the screw compressor 1 to be subjected to oil-gas separation and returns to a low-pressure oil return port of the high-temperature screw compressor 1, gas enters a first 7 input port of a stop valve through an exhaust port of the oil separator 4 and is connected with a water-cooled condenser 8 refrigerant through an input port of the first stop valve 7, an output port of the water-cooled condenser 8 is connected, the first branch is connected with the second main-circuit electromagnetic valve 16 and the electronic expansion valve 17, the output end of the first branch is connected with the input end of the evaporator 19, the second branch is connected with the input end of the sixth stop valve 14, the output end of the second branch is connected with the input end of the third liquid-spraying electromagnetic valve 15, and the output end of the third liquid-spraying electromagnetic valve 15 is connected with a low-pressure liquid-spraying port of the screw compressor 1. Refrigerant R134a evaporates in evaporator 19, and its gas is connected with five stop valves 22 input through the pipeline from the evaporator 19 output, and five stop valves 22 output is connected with screw compressor 1 return air end through the pipeline, and the system has oil pressure difference switch 2 that prevents oil filter jam, prevents compressor high pressure too high pressure protection switch 3, low pressure too low pressure protection switch 23. When an outlet air temperature sensor (PT-1000) of the evaporator 19 detects that the outlet air temperature rises to Te (8 ℃), the screw compressor 1 is started to compress a refrigerant R134a and discharge high-temperature and high-pressure gas, the gas reaches the input end of the oil separator 4 through the output end of the screw compressor, the output end of the oil separator 4 is connected with the input end of a first stop valve 7 through a pipeline, the output end of the first stop valve 7 is connected with the refrigerant input end of the water-cooled condenser 8 through a copper pipe, a refrigerant R134a is in the water-cooled condenser 8, the refrigerant is condensed from gas state into liquid state and then output, the output end of the water-cooled condenser 8 is connected with the input end of the second stop valve 10, the liquid refrigerant R134 is connected with the input end of the electronic expansion valve 17 through the dry filter 11, the first sight glass 12, the third stop valve 13 and the second electromagnetic valve 16, the output end of the electronic expansion valve 17 is connected with the input end of the evaporator 19 through the fourth stop valve 18, and the output end of the evaporator 19 is connected with the air return end of the screw compressor 1 through the fifth stop valve 22. When the compressor 1 operates, the switch of the second main-path electromagnetic valve 16 is opened, when the screw compressor 1 stops operating, the electromagnetic valve is disconnected, and the refrigerating system is provided with the oil pressure difference switch 2, the system high-voltage protection switch 3 and the low-voltage protection switch 23.
Generally speaking, the air outlet temperature T is fed back to the controller in real time through the temperature sensor for air outlet of the equipment, the air outlet temperature T is compared with a set value Te, and when the temperature sensed by the temperature sensor is higher than the set value, the controller gives a signal to start the screw compressor to perform refrigeration; when the outlet air temperature is lower than a set value Te-temperature difference delta T, the controller gives a signal, the screw compressor 1 is unloaded to stop working, and the screw compressor 1 is stopped when the system is protected.
The above examples are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention are intended to fall within the scope of the present invention defined by the claims.
Claims (10)
1. A mine water source refrigeration plant which is characterized in that: including on-vehicle portable water source screw unit, on-vehicle portable water source screw unit including screw compressor, oil separator, water cooled condenser, drier-filter, look liquid mirror one and evaporimeter, screw compressor's output pass through the pipeline and be connected with the oil separator input, the oil separator output be connected with water cooled condenser's input, water cooled condenser output pass through the pipeline and be connected with the drier-filter input, the drier-filter output pass through the pipeline and look liquid mirror one input and be connected, look liquid mirror one output and be connected with the evaporimeter input, the evaporimeter pass through the pipeline and be connected with screw compressor's input.
2. The mine water source refrigeration unit as claimed in claim 1, wherein: a high-pressure protection switch is arranged on a pipeline between the output end of the screw compressor and the input end of the oil separator; a first stop valve is arranged between the output end of the oil separator and the input end of the water-cooled condenser; a second stop valve is arranged between the output end of the water-cooled condenser and the input end of the drying filter; a third stop valve, a second electromagnetic valve, an electronic expansion valve and a fourth stop valve are sequentially arranged between the output end of the first liquid viewing mirror and the evaporator; a stop valve V and a low-pressure protection switch are sequentially arranged between the evaporator and the screw compressor; and an oil pressure difference switch is arranged between the input end and the output end of the screw compressor.
3. The mine water source refrigeration unit as claimed in claim 2, wherein: and the pipeline of the output end of the third stop valve is divided into one path which is connected with the six input ends of the stop valve, the six output ends of the stop valve are connected with the three input ends of the electromagnetic valve through pipelines, and the three output ends of the electromagnetic valve are connected with a liquid spraying cooling port of the screw compressor through pipelines.
4. The mine water source refrigeration unit as claimed in claim 1, wherein: the oil return output end of the oil separator 4 is connected with the first input end of the electromagnetic valve through a pipeline, the first output end of the electromagnetic valve is connected with the second input end of the liquid viewing mirror, and the second output end of the liquid viewing mirror is connected with an oil return port of the screw compressor through a pipeline.
5. The mine water source refrigeration unit as claimed in claim 1, wherein: the output end of the underground water pipe of the mine tunnel is connected with the input end of the liquid storage filter, the output end of the liquid storage filter is connected with the input end of the water pump, the output end of the water pump is connected with the input end of the quick joint through a first stainless steel hose, the output end of the quick joint is connected with the input end of the water path stop valve through a water pipe, the output end of the water path stop valve is connected with the input end of the Y-shaped filter through a water pipe, the output end of the water path stop valve is connected with the input end of the water path stop valve through a water pipe, the output end of the water path stop valve is connected with the input end of the quick joint through a second stainless steel hose, and the output end of the underground water pipe.
6. The mine water source refrigeration unit as claimed in claim 1, wherein: in the vehicle-mounted movable water source screw unit, a double-air-channel high-excess-pressure fan is adopted for air supply, two centrifugal fan fans of the evaporator are respectively connected with two quick air inlet input ends through two pipelines, and two quick air inlet output ends are respectively connected with two air outlet input ends through two air pipes.
7. The mine water source refrigeration unit as claimed in claim 6, wherein: the quick air port is a joint with a pipe clamp lock catch; the air pipe is a rubber plastic hose, the diameter of the hose is phi 100mm, the length of the hose is 100m, pipe clamps are arranged on the pipeline every 1m, the pipe clamps are provided with slip rings, and the pipe clamps move on steel wires; the air outlet is an air outlet with shutters and capable of adjusting the air outlet direction.
8. The mine water source refrigeration unit as claimed in claim 1, wherein: the vehicle-mounted movable water source screw unit is arranged on a bottom plate of the rail-mounted mine car, a moisture-proof and dust-proof shell is arranged outside the vehicle-mounted movable water source screw unit, and the five panels are connected through buckles.
9. The mine water source refrigeration unit as claimed in claim 1, wherein: the distribution box of the vehicle-mounted movable water source screw unit adopts a three-wire three-phase power supply, an automatic heating type fan is installed in the distribution box, a touch screen and an emergency switch are adopted for operation, and a 485 data interface is arranged.
10. The mine water source refrigeration unit as claimed in claim 1, wherein: the screw compressor is a water source screw compressor, and the refrigerant of the screw compressor is R134 a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966020.XA CN112013568A (en) | 2020-09-15 | 2020-09-15 | Mine water source refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010966020.XA CN112013568A (en) | 2020-09-15 | 2020-09-15 | Mine water source refrigeration equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112013568A true CN112013568A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010966020.XA Pending CN112013568A (en) | 2020-09-15 | 2020-09-15 | Mine water source refrigeration equipment |
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| CN (1) | CN112013568A (en) |
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| CN101949298A (en) * | 2010-09-29 | 2011-01-19 | 煤炭科学研究总院重庆研究院 | Underground refrigerating and cooling device for coal mine |
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