CN217897944U - Ground cooling system with closed cooling tower - Google Patents
Ground cooling system with closed cooling tower Download PDFInfo
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- CN217897944U CN217897944U CN202222327170.3U CN202222327170U CN217897944U CN 217897944 U CN217897944 U CN 217897944U CN 202222327170 U CN202222327170 U CN 202222327170U CN 217897944 U CN217897944 U CN 217897944U
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Abstract
The utility model discloses a take ground cooling system of closed cooling tower, take ground cooling system of closed cooling tower to include once cold water closed circulation system, secondary cold water closed circulation system and refrigerated water closed circulation system, utilize ground closed cooling tower and refrigeration technology organic combination, guarantee that the underground production has suitable operational environment, ensure safety in production, the maintenance operation personnel is healthy. Adopt this system, the circulation medium of once cold water closed circulation system, secondary cold water closed circulation system and refrigerated water closed circulation system all adopts demineralized water, has effectively avoided the corrosion problem in pipeline inner wall and the equipment casing, passes through the atmosphere emission to heat transfer ground in the pit, and the system is energy-concerving and environment-protective, can solve the cooling problem in the pit completely.
Description
Technical Field
The utility model relates to an industrial and mining waste heat resource recovery technical field especially relates to a take ground cooling system of closed cooling tower.
Background
In recent years, along with the annual increase of the mining depth of a mine, in deep mining engineering, the high-temperature thermal damage of the mine and the treatment of the high-temperature thermal damage are urgent, the working environment of improving the working face of a high-temperature thermal damage mine and a tunneling head is extremely improved, an underground cooling engineering is additionally arranged, the working comfort of workers can be improved, and the attendance rate of the workers is increased.
The air temperature of the underground coal mine working environment exceeds the national specified sanitary and safety standards, thereby causing harm to human health, production and safety. The air temperature of the excavation working face of the production mine is not more than 28 ℃, and the air temperature of the electromechanical equipment chamber is not more than 30 ℃.
When the air temperature of the mining working face is equal to or more than 32 ℃ and the air temperature of the idle chamber of the electromechanical equipment is equal to or more than 34 ℃, the operation is stopped. When the temperature of the air flow of the working face is between 28 and 30 ℃, the air flow speed of the working place is between 2.5 and 3.0m/s, and when the temperature of the air flow of the working face is between 30 and 32 ℃, the air flow speed of the working place is between 3.0 and 4.0m/s.
The underground cooling modes of the coal mine are diversified, and the underground local moving type, the underground concentrated cold water type, the ground ice making and underground water melting type and the like are common.
1. Local portable in pit: the installation position of the refrigerating unit mainly considers two aspects of cooling effect and mining face propulsion speed. Because the specific heat of the air is small, the temperature rise is fast, so the closer the evaporator of the refrigerating machine is to the air inlet of the mining face, the better the cooling effect of the mining face is. The disadvantages are that: 1) The refrigerating capacity is small; 2) The refrigerator is too close to the working surface, so that the refrigerator moves frequently and production is influenced; 3) If the tunneling distance of the tunnel is long, the cold loss of the middle part of the tunnel is large, and the head-on cold supply of the tunneling working face is insufficient; 4) The condensation heat is difficult to discharge.
2. Underground centralized cold water type: refrigeration plant all installs in the pit, utilizes the heat pump to arrange heat in the pit to the return air inlet, discharges into atmosphere together, and the shortcoming is: 1) The refrigeration equipment is in a wet underground environment for a long time, and the requirement on the corrosion resistance of the unit is high; 2, the requirement on refrigerating unit equipment is high, and domestic mature manufacturers are few. The manufacturing period of the foreign machine set is long, and meanwhile, domestic assembly and detection are needed, so that the construction period cannot be guaranteed; 3) The construction in the early stage of the underground is difficult, and the maintenance of equipment in the later stage is difficult.
3. Ground ice making and underground water melting type: the refrigeration device is placed on the ground and conveys the flake ice to the underground ice melting pool, and the defects are that: 1) The energy consumption is high; 2) The temperature of the circulating medium is low, the cold loss is increased, and the hydrostatic pressure is high; 3) Long-distance ice transportation and high failure rate; 4) The system is complex, the equipment is multiple, the occupied area is large, and the investment of a machine room is high; 5) The auxiliary equipment is more, and the stability is poor; 6) The technical parameters of ice transportation with large flow and the limit distance of ice transportation need further research.
The above several underground cooling technologies have the problems of high initial investment of equipment, high system operation cost, complex configuration, high management cost and the like, particularly, when the underground local mobile type has various condensation conditions, the selection of a system energy efficiency ratio scheme is required, the condensation heat cannot be directly discharged into the return air shaft air flow, and certain defects and potential safety hazards exist.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is well known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take ground cooling system of closed cooling tower for guarantee the suitable meteorological condition of production in the pit, ensure safety in production, it is healthy to maintain the operation personnel. The defects of the existing underground cooling system are overcome, and an underground cooling scheme which is more energy-saving and more reliable is provided.
In order to achieve the above object, the present invention provides the following technical solutions:
the ground cooling system with the closed cooling tower of the utility model comprises a primary cold water closed circulation system, a secondary cold water closed circulation system and a cooling water closed circulation system, wherein,
the primary cold water closed circulation system comprises a primary cold water closed circulation system,
at least one evaporator is arranged in the evaporator,
at least one primary chilled water pump connected to the evaporator,
at least one high-low pressure heat exchanger connected with the primary chilled water pump,
a primary chilled water replenishing pump connected between the high-low pressure heat exchanger and the primary chilled water pump,
the ethylene glycol water tank is connected with the primary chilled water replenishing pump, the evaporator, the primary chilled water pump, the high-low pressure heat exchanger, the primary chilled water replenishing pump and the ethylene glycol water tank to form primary cold water closed circulation;
the secondary cold water closed circulation system comprises a secondary cold water closed circulation system,
at least one air cooler connected with the high-pressure and low-pressure heat exchangers,
at least one secondary chilled water pump connected to the air cooler,
at least one secondary chilled water replenishing pump connected between the secondary chilled water pump and the high-low pressure heat exchanger,
a water tank connected with the secondary chilled water replenishing pump,
the water softener is connected with the water tank, and the high-low pressure heat exchanger, the air cooler, the secondary chilled water pump, the secondary chilled water replenishing pump, the water tank and the water softener form secondary cold water closed circulation;
the cooling water closed circulation system comprises a cooling water closed circulation system,
at least one closed cooling tower is arranged in the tower,
at least one cooling water circulating pump connected with the closed cooling tower,
at least one condenser connected to the cooling water circulation pump,
a cooling water replenishing pump connected between the cooling tower and the cooling water circulating pump,
a soft water pool connected with the cooling water replenishing pump,
and the softener is connected with the soft water pool, and the closed cooling tower, the cooling water circulating pump, the condenser, the cooling water replenishing pump, the soft water pool and the softener form closed cooling water circulation.
In the ground cooling system with the closed cooling tower, the primary cold water closed circulation system comprises two refrigeration units connected in parallel, and each refrigeration unit consists of an evaporator and a condenser.
In the ground cooling system with the closed cooling tower, two parallel primary refrigeration water pumps are converged and then connected with two parallel evaporators.
In the ground cooling system with the closed cooling tower, 4 parallel high-low pressure heat exchangers are connected with two parallel primary refrigeration water pumps after being gathered.
In the ground cooling system with the closed cooling tower, two air coolers connected in parallel are connected with the high-low pressure heat exchanger.
In the ground cooling system with the closed cooling tower, two parallel secondary chilled water pumps are converged and then connected with two parallel air coolers.
In the ground cooling system with the closed cooling tower, two parallel secondary chilled water make-up pumps are connected between the secondary chilled water pump and the high-low pressure heat exchanger.
In the ground cooling system with the closed cooling tower, the cooling water closed circulation system comprises two closed cooling towers connected in parallel, and the two cooling water circulation pumps connected in parallel are connected with the closed cooling towers.
A take ground cooling system of closed cooling tower in, the entry of one-level refrigerated water moisturizing pump inhales ethylene glycol solution from the ethylene glycol pond, the export of one-level refrigerated water moisturizing pump connects a refrigerated water pump sunction inlet as first moisturizing constant pressure point, the entry of second grade refrigerated water moisturizing pump inhales the demineralized water from the water tank, the export of second grade refrigerated water moisturizing pump connects second grade refrigerated water pump sunction inlet as second moisturizing constant pressure point, the entry of cooling water moisturizing pump inhales the demineralized water from the soft water pond, the export of cooling water moisturizing pump connects the sunction inlet of cooling water circulating pump as third moisturizing constant pressure point.
In the ground cooling system with the closed cooling tower, the ground cooling system with the closed cooling tower is provided with a flowmeter, an electric valve, a temperature sensor and a pressure sensor.
In the technical scheme, the utility model provides a pair of take ground cooling system of closed cooling tower has following beneficial effect: the utility model solves the problems of long-distance transportation, large cold loss and high cost of antiseptic treatment of ground and underground connecting pipelines; drilling problems, complex geology and high drilling uncertainty; a coal yard is arranged in a mining area, so that the lift is large, and the service life of equipment is influenced; require the defect of high low pressure heat exchanger adaptation transportation in the pit and installation, the utility model has the advantages of reasonable design, utilize ground closed cooling tower and refrigeration technology to combine organically, guarantee that production in the pit has suitable operational environment, ensure safe production, maintenance operation personnel is healthy. Adopt this system, the circulation medium of once cold water closed circulation system, secondary cold water closed circulation system and refrigerated water closed circulation system all adopts demineralized water, has effectively avoided the corrosion problem in pipeline inner wall and the equipment casing, passes through the atmospheric emission to heat transfer ground in the pit, and the system is energy-concerving and environment-protective, can solve the cooling problem in the pit completely, accords with environmental protection policy, has fine practicality and economic nature. The equipment is simple, does not need to be restricted by underground conditions, and has large capacity expansion; the cooling tower is used for discharging air, so that the energy is saved, the environment is protected, and the practicability is good.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural diagram of a ground cooling system with a closed cooling tower.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment, the utility model discloses a take ground cooling system of closed cooling tower includes closed cooling tower 1, cooling water circulating pump 2, refrigerating unit 3, high low pressure heat exchanger 4, a frozen water pump 5, one-level frozen water make-up pump 6, cooling water make-up pump 7, ethylene glycol pond 8, soft water pond 9, demineralizer 10, air cooler 11, second grade frozen water pump 12, second grade frozen water make-up pump 13, softened water tank 14, water softener 15 etc.. An evaporator, a primary chilled water pump 5, a high-low pressure heat exchanger 4, a primary chilled water replenishing pump 6 and a glycol water tank 8 of the refrigerating unit 3 form a primary cold water closed circulation system; the high-low pressure heat exchanger 4, the air cooler 11, the second grade chilled water pump 12, the second grade chilled water moisturizing pump 13, the water tank 14, the water softener 15 constitute secondary cold water closed circulation system, guarantee the suitable meteorological condition of production in the pit, ensure safe production, the maintenance operation personnel is healthy. The closed cooling tower 1, the cooling water circulating pump 2, the condenser of the refrigerating unit 3, the cooling water make-up pump 7, the soft water pool 9 and the softener 10 form a cooling water closed circulating system, and the condensation heat is discharged into the atmosphere through the closed cooling tower.
In one embodiment, in a ground cooling system with a closed cooling tower, a ground refrigeration station utilizes a refrigeration unit 3 to generate cold load to prepare low-temperature cold water, a cooling pipeline is conveyed from the ground to an equipment chamber with a high-low pressure heat exchanger 4 placed underground through a primary chilled water pump 5, the cooling pipeline returns to the ground after heat exchange of the high-low pressure heat exchanger 4, the system adopts glycol solution to form closed circulation, an inlet of a primary chilled water replenishing pump 6 sucks the glycol solution from a glycol water pool 8, and an outlet of the primary chilled water replenishing pump 6 is connected with a suction inlet of the primary chilled water pump 5 to serve as a water replenishing constant pressure point, so that a primary cold water closed circulation system is formed. The pipeline is provided with a flowmeter, an electric valve, a temperature sensor and a pressure sensor according to the system requirement, so as to realize automatic control.
In one embodiment, the secondary cold water is directly supplied to an air cooler 11 of a mining working face after coming out of a high-low pressure heat exchanger 4, the air cooler 11 exchanges heat with wind flow and then returns to the high-low pressure heat exchanger 4, the circulating medium of the system adopts softened water to form closed circulation, an inlet of a secondary chilled water replenishing pump 13 sucks the softened water from a softened water tank 14, an outlet of the secondary chilled water replenishing pump 13 is connected with a suction inlet of a secondary chilled water pump 12 to serve as a water replenishing constant pressure point, and thus a closed circulation system of the secondary cold water is formed. The pipeline is provided with a flowmeter, an electric valve, a temperature sensor and a pressure sensor according to the system requirement, so as to realize automatic control.
In one embodiment, the condensation heat generated by the condenser side of the ground refrigerating unit 3 is discharged through the atmosphere by the closed cooling tower 1, the system adopts softened water to form a closed circulation, the inlet of the cooling water replenishing pump 7 sucks the softened water from the soft water pool 9, and the outlet of the cooling water replenishing pump 7 is connected with the suction inlet of the cooling water circulating pump 2 to be used as a water replenishing constant pressure point, so that a cooling water circulation system is formed. The pipeline is provided with a flowmeter, an electric valve, a temperature sensor and a pressure sensor according to the system requirement, so as to realize automatic control.
In one embodiment, the evaporator of the refrigerating unit 3, the primary chilled water pump 5, the high-low pressure heat exchanger 4, the primary chilled water replenishing pump 6 and the glycol water tank 8 form a primary cold water closed circulation system; the high-low pressure heat exchanger 4, the air cooler 11, the second grade chilled water pump 12, the second grade chilled water moisturizing pump 13, the water tank 14, the water softener 15 constitute secondary cold water closed circulation system, guarantee the suitable meteorological condition of production in the pit, ensure safe production, the maintenance operation personnel is healthy. And the closed cooling tower 1, the cooling water circulating pump 2, the condenser of the refrigerating unit 3, the cooling water make-up pump 7, the soft water pool 9 and the softener 10 form a cooling water closed circulating system, and the condensation heat is discharged into the atmosphere through the closed cooling tower. Adopt closed cooling tower, avoided because there is the coal factory in the industrial site, the raise dust is big, influence equipment life.
In one embodiment, the supply and return water temperature of the chilled water of the evaporator of the refrigerating unit 3 is 15/-5 ℃, the circulating medium adopts glycol solution, if the capacity expansion is carried out in the later period, the unit can continue to carry out deep refrigeration, and the capacity expansion requirement of the mine in the later period is met. The refrigerating unit 3 is divided into an evaporation side and a condensation side. The condensation side is connected with the closed cooling tower, and the evaporation side is connected with the high-low pressure heat exchanger 4, so that the underground cooling function is realized.
The underground cooling device consists of an air cooler 11 and an explosion-proof motor. The air cooler generates cold air, the air flow is cooled, and then the cold air flows back to the mining explosion-proof refrigerating unit to complete a cycle, the system is a closed cycle, and the cycle working medium is softened water, so that underground cooling is realized.
Finally, it should be noted that: the embodiments described are only a few embodiments of the present application, not all embodiments, and all other embodiments that can be obtained by one skilled in the art without making any inventive effort based on the embodiments in the present application are intended to be covered by the present application.
Certain exemplary embodiments of the present invention have been described above by way of illustration only, and it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A ground cooling system with a closed cooling tower is characterized by comprising a primary cold water closed circulation system, a secondary cold water closed circulation system and a cooling water closed circulation system, wherein,
the primary cold water closed circulation system comprises a primary cold water closed circulation system,
at least one evaporator is arranged in the evaporator,
at least one primary chilled water pump connected to the evaporator,
at least one high-low pressure heat exchanger connected with the primary chilled water pump,
a primary chilled water replenishing pump connected between the high-low pressure heat exchanger and the primary chilled water pump,
the ethylene glycol water tank is connected with the primary chilled water replenishing pump, the evaporator, the primary chilled water pump, the high-low pressure heat exchanger, the primary chilled water replenishing pump and the ethylene glycol water tank to form primary cold water closed circulation;
the secondary cold water closed circulation system comprises a secondary cold water closed circulation system,
at least one air cooler connected with the high-pressure and low-pressure heat exchangers,
at least one secondary chilled water pump connected to the air cooler,
at least one secondary chilled water replenishing pump connected between the secondary chilled water pump and the high-low pressure heat exchanger,
a water tank connected with the secondary chilled water replenishing pump,
the water softener is connected with the water tank, and the high-low pressure heat exchanger, the air cooler, the secondary chilled water pump, the secondary chilled water replenishing pump, the water tank and the water softener form secondary cold water closed circulation;
the cooling water closed circulation system comprises a cooling water closed circulation system,
at least one closed cooling tower is arranged in the tower,
at least one cooling water circulating pump connected with the closed cooling tower,
at least one condenser connected to the cooling water circulation pump,
a cooling water replenishing pump connected between the cooling tower and the cooling water circulating pump,
a soft water pool connected with the cooling water replenishing pump,
and the softener is connected with the soft water pool, and the closed cooling tower, the cooling water circulating pump, the condenser, the cooling water replenishing pump, the soft water pool and the softener form closed cooling water circulation.
2. The ground cooling system with the closed cooling tower as claimed in claim 1, wherein the primary cold water closed circulation system comprises two refrigeration units connected in parallel, and each refrigeration unit consists of the evaporator and the condenser.
3. The ground cooling system with the closed cooling tower as claimed in claim 2, wherein the two parallel primary chilled water pumps are converged and then connected with the two parallel evaporators.
4. The ground cooling system with the closed cooling tower as claimed in claim 3, wherein 4 parallel high-low pressure heat exchangers are connected with two parallel primary chilled water pumps after being collected.
5. The ground cooling system with the closed cooling tower as claimed in claim 1, wherein two parallel air coolers are connected with the high-low pressure heat exchanger.
6. The ground cooling system with the closed cooling tower as claimed in claim 5, wherein the two parallel secondary chilled water pumps are converged and then connected with the two parallel air coolers.
7. The ground cooling system with the closed cooling tower as claimed in claim 6, wherein two parallel secondary chilled water make-up pumps are connected between the secondary chilled water pump and the high-low pressure heat exchanger.
8. The ground cooling system with the closed cooling tower as claimed in claim 1, wherein the closed cooling water circulation system comprises two closed cooling towers connected in parallel, and two cooling water circulation pumps connected in parallel are connected with the closed cooling towers.
9. The ground cooling system with the closed cooling tower as claimed in claim 1, wherein an inlet of the primary chilled water make-up pump sucks the glycol solution from a glycol water tank, an outlet of the primary chilled water make-up pump is connected with a suction inlet of the primary chilled water pump as a first water make-up constant pressure point, an inlet of the secondary chilled water make-up pump sucks softened water from a water tank, an outlet of the secondary chilled water make-up pump is connected with a suction inlet of the secondary chilled water pump as a second water make-up constant pressure point, an inlet of the cooling water make-up pump sucks softened water from the soft water tank, and an outlet of the cooling water make-up pump is connected with a suction inlet of the cooling water circulating pump as a third water make-up constant pressure point.
10. The ground cooling system with the closed cooling tower as claimed in claim 1, wherein the ground cooling system with the closed cooling tower is provided with a flow meter, an electric valve, a temperature sensor and a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222327170.3U CN217897944U (en) | 2022-09-01 | 2022-09-01 | Ground cooling system with closed cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222327170.3U CN217897944U (en) | 2022-09-01 | 2022-09-01 | Ground cooling system with closed cooling tower |
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| CN217897944U true CN217897944U (en) | 2022-11-25 |
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| CN202222327170.3U Active CN217897944U (en) | 2022-09-01 | 2022-09-01 | Ground cooling system with closed cooling tower |
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