CN209761420U - Open-air coal mining equipment and cooling system thereof - Google Patents
Open-air coal mining equipment and cooling system thereof Download PDFInfo
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- CN209761420U CN209761420U CN201920488105.4U CN201920488105U CN209761420U CN 209761420 U CN209761420 U CN 209761420U CN 201920488105 U CN201920488105 U CN 201920488105U CN 209761420 U CN209761420 U CN 209761420U
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Abstract
The utility model discloses an open-air coal mining equipment and cooling system thereof, cooling system includes: a coolant tank for holding a coolant; a first cooling loop, a second cooling loop, a third cooling loop and a fourth cooling loop, wherein the liquid inlet of a cooling liquid pipeline of the cooling liquid tank is respectively connected with the liquid outlet of a cooling liquid tank; the four cooling loops comprise cooling liquid pipelines, stop valves arranged on the cooling liquid pipelines, water pumps, pressure sensors and motors to be cooled; the first cooling loop further comprises a refrigerant cooler and a frequency converter box which are sequentially arranged on the cooling liquid pipeline and used for cooling the cooling liquid on the cooling liquid pipeline; wherein, set up the air cooler that is used for carrying out the cooling to the coolant liquid of backward flow on the wet return way between four cooling circuit's coolant liquid pipeline liquid outlets and the liquid return mouth of coolant liquid case. The utility model discloses a cooling system has solved the drawback that prior art needs a large amount of water, has guaranteed the cooling effect of each part again simultaneously.
Description
Technical Field
The utility model relates to a cargo airplane technical field especially relates to an open-air coal mining is equipped and cooling system thereof.
Background
Open pit mining is increasingly valued by coal mining enterprises due to its advantages of large production capacity, short construction period, low mining cost, high labor productivity and the like. The operational efficiency and reliability of open-pit coal mining equipment is one of the primary factors determining the efficiency of open-pit mining. A cooling system of the open-air coal mining equipment is responsible for cooling all parts of motors, boxes and the like, so that the temperature rise of all parts is balanced.
A cooling system of conventional coal mining equipment generally adopts a water cooling mode, a mine provides continuous cooling water to cool all relevant parts of a unit, and the cooling water is directly discharged into a channel after passing through a cooling part. The cooling mode has good effect and simple system. However, this cooling method also has the following disadvantages: the required cooling water amount is large, and the water resource waste is serious. For the construction of well mines, the amount of water produced by mining can be used directly, but for surface mining, the source of water and the treatment of the cooled water present great difficulties.
Disclosure of Invention
The utility model aims at providing an open-air coal mining equipment and cooling system thereof.
To achieve the above objects of the present invention, an embodiment of the present invention provides a cooling system, including: a coolant tank for holding a coolant; a first cooling loop, a second cooling loop, a third cooling loop and a fourth cooling loop, wherein the liquid inlet of a cooling liquid pipeline of the cooling liquid tank is respectively connected with the liquid outlet of a cooling liquid tank; the four cooling loops comprise cooling liquid pipelines, stop valves arranged on the cooling liquid pipelines, water pumps, pressure sensors and motors to be cooled; the first cooling loop further comprises a refrigerant cooler and a frequency converter box which are sequentially arranged on the cooling liquid pipeline of the first cooling loop and used for cooling the cooling liquid on the cooling liquid pipeline according to the working temperature requirement of the frequency converter box; wherein, set up on the wet return line between four cooling circuit's coolant pipe way liquid outlets and the liquid return mouth of coolant liquid case and be used for carrying on the air cooler that cools off to the coolant liquid of each parts heat that flows back.
the motor to be cooled on the first cooling loop comprises an oil pump motor, a left walking motor and a right walking motor which are sequentially arranged behind the frequency converter box.
And the motor to be cooled on the second cooling loop comprises a left cutting motor and a left cutting box which are sequentially arranged behind the pressure transmitter.
And the motor to be cooled on the third cooling loop comprises a right cutting motor and a right cutting box which are sequentially arranged behind the pressure transmitter.
and the motor to be cooled on the fourth cooling loop comprises a crushing motor, a left conveying motor, a right conveying motor, a left loading motor and a right loading motor which are sequentially arranged behind the pressure transmitter.
Further, the air cooler also comprises a safety valve connected with the air cooler in parallel.
furthermore, the cooling system also comprises a water temperature sensor, a water level sensor and an air filter which are arranged on the cooling liquid tank.
Further, the cooling system also comprises a filter which is arranged on the water return pipeline and is positioned between the air cooler and the cooling liquid tank.
Furthermore, the device also comprises a unit control system which is connected with the components and used for controlling the actions of the components.
On the other hand, the embodiment of the utility model provides a still provide an open-air coal mining equipment who has above-mentioned cooling system.
Compared with the prior art, the utility model discloses open-air coal mining equipment and cooling system thereof has following advantage:
1. The utility model discloses open-air coal mining equipment's cooling system combines water-cooling method, air-cooled cooling method and refrigerant cooling method, has solved the drawback of a large amount of water, has guaranteed the cooling effect of each part simultaneously again.
2. The utility model discloses cooling system carries each cooling circuit with the coolant liquid through the water pump, and the coolant liquid is taken the heat out after waiting cooling arrangement, makes coolant liquid temperature rise, and the coolant liquid behind each cooling circuit temperature rise converges into all the way, then cools down it through the forced air cooler, looses out its heat of taking out from the equipment.
3. The utility model discloses cooling system to special parts converter case, through the refrigerant cooler with coolant liquid temperature control in certain within range, and then realize that the converter case is working under being close homothermal state, improves the stability of its work.
The present invention will be described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a cooling system of an open-air coal mining apparatus according to an embodiment of the present invention.
Description of reference numerals:
1. A safety valve; 2. a wind cooler; 3. a filter; 4. a water temperature sensor; 5. a coolant tank; 6. an air filter; 7. a water level sensor; 8. a stop valve; 9. a water pump; 10. a pressure sensor; 11. a refrigerant cooler; 12. a frequency converter box; 13. an oil pump motor; 14. a left travel motor; 15. a right travel motor; 16. a left cutting box; 17. a left cutting motor; 18. a right cutting motor; 19. a right cutting box; 20. a crushing motor; 21. a left transport motor; 22. a right transport motor; 23. a left load motor; 24. and a right loading motor.
Detailed Description
An aspect of the embodiment of the utility model provides a cooling system of open-air coal mining equipment, include: a coolant tank for holding a coolant; a first cooling loop, a second cooling loop, a third cooling loop and a fourth cooling loop, wherein the liquid inlet of a cooling liquid pipeline of the cooling liquid tank is respectively connected with the liquid outlet of a cooling liquid tank; the four cooling loops comprise cooling liquid pipelines, stop valves arranged on the cooling liquid pipelines, water pumps, pressure sensors and motors to be cooled; the first cooling loop further comprises a refrigerant cooler and a frequency converter box which are sequentially arranged on the cooling liquid pipeline of the first cooling loop and used for cooling the cooling liquid on the cooling liquid pipeline according to the working temperature requirement of the frequency converter box; wherein, set up on the wet return line between four cooling circuit's coolant pipe way liquid outlets and the liquid return mouth of coolant liquid case and be used for carrying on the air cooler that cools off to the coolant liquid of each parts heat that flows back.
Specifically, as shown in fig. 1, for the schematic diagram of the cooling system of the open-air coal mining equipment according to the embodiment of the present invention, it can be known from the figure that the cooling system of the present embodiment includes the coolant tank 5 for holding the coolant, and the coolant flowing out from the liquid outlet of the coolant tank 5 can be conveyed to four parallel cooling loops, that is, the first cooling loop, the second cooling loop, the third cooling loop, and the fourth cooling loop.
the coolant pipeline of the first cooling circuit passes through the stop valve 8, the water pump 9, the pressure sensor 10, the coolant cooler 11, the frequency converter box 12, the oil pump motor 13, the left traveling motor 14 and the right traveling motor 15 in sequence. And a cooling liquid pipeline of the second cooling loop sequentially passes through a stop valve 8, a water pump 9, a pressure sensor 10, a left cutting motor 17 and a left cutting box 16. And a coolant pipeline of the third cooling loop sequentially passes through a stop valve 8, a water pump 9, a pressure sensor 10, a right cutting motor 18 and a right cutting box 19. And a cooling liquid pipeline of the fourth cooling loop sequentially passes through a stop valve 8, a water pump 9, a pressure sensor 10, a crushing motor 20, a left transportation motor 21, a right transportation motor 22, a left loading motor 23 and a right loading motor 24.
Liquid outlets of cooling liquid pipelines of the four cooling loops converge to a total water return pipeline, an air cooler 2 and a filter 3 which are used for cooling the returned cooling liquid carrying heat of each part are sequentially arranged between the water return pipeline and a liquid return port of the cooling liquid tank, and a safety valve 1 which is connected with the air cooler 2 in parallel is further arranged on the water return pipeline. The coolant cooled by the air cooler 2 is filtered by the filter 3 and then flows back to the coolant tank 5. A water temperature sensor 4 for detecting the temperature of the coolant, a water level sensor 7 for detecting the level of the coolant, and an air filter 6 are provided in the coolant tank 5.
The above components of the present embodiment are electrically connected to the unit control system, respectively, so as to control the actions of the components through the unit control system.
In practice, the components are assembled in the order shown in fig. 1, and the relief pressures of the relief valves 1 in the four cooling circuits are set to 1.5Mpa, respectively.
When the open-air coal mining equipment such as a continuous miner normally works, the four cooling loops can work simultaneously. The stop valve 8 in each cooling circuit is opened, the water pump 9 is started, and the cooling liquid is pumped out of the cooling liquid tank 5 and conveyed to each cooling circuit.
The cooling liquid in the first loop returns to a total water return pipeline converged by the four cooling loops after passing through a stop valve 8, a water pump 9, a pressure sensor 10, a refrigerant cooler 11, a frequency converter box 12, an oil pump motor 13, a left walking motor 14 and a right walking motor 15 in sequence.
Wherein, the stop valve 8 is fixed on the box body of the cooling liquid box 5 through a bolt and then connected with the water pump 9 in series through a hose. The stop valve 8 is used for opening and closing the loop, the water pump 9 is used as a power element of the cooling loop, the pressure sensor 10 is installed in a water outlet hose pipeline of the water pump 9, and cooling liquid flows to the refrigerant cooler 11 (or can be called as a water chilling unit), the frequency converter box 12, the oil pump motor 13, the left walking motor 14 and the right walking motor 15 in sequence through hoses and then is converged with cooling liquid pipelines of other three cooling loops.
The pressure sensor 10 can monitor the pressure of the cooling loop in real time, the refrigerant cooler 11 adopts refrigerants to cool the cooling liquid through form change, and the outlet water temperature of the refrigerant cooler 11 is set to be 20 ℃ during design. The structures of the frequency converter box 12, the oil pump motor 13, the left walking motor 14 and the right walking motor 15 all adopt water cooling structures, namely cooling flow channels are arranged inside each part, and cooling liquid enters the cooling flow channels and takes away heat generated by each element through heat exchange to realize a cooling effect. The water cooling structure can adopt a structure in the prior art.
The working pressure range set by the pressure sensor is 1-1.8Mpa, when the pressure sensor monitors that the pressure of the first cooling circuit is larger than 1.8Mpa, the pressure building condition exists in the first cooling circuit, and at the moment, the unit control system controls the water pump 9 to stop working, so that the water pump 9 is prevented from being damaged due to overload. And when the pressure of the first cooling circuit is lower than 1Mpa, the pressure indicates that the cooling circuit has leakage or the water pump 9 is damaged, at the moment, the unit control system controls the water pump 9 to stop, and after the fault is eliminated, the water pump 9 is restarted.
The refrigerant cooler is an industrial water chilling unit, and a compressor, an evaporator, a condenser and an expansion valve are utilized, so that the refrigerating effect of the unit is achieved. The refrigerant adopted in the embodiment is R22 or R134A. The refrigerant cooler (industrial water chilling unit) is provided with a control system, and after the outlet water temperature is set, the outlet water temperature can be guaranteed to be changed within a certain range, and the deviation is +/-2 ℃. If the water outlet temperature is higher than the set temperature, the water chilling unit is indicated to have a fault, at this time, fault information is transmitted to the unit control system, and the unit control system gives out a fault alarm.
Wherein, the cooling liquid in the second cooling loop returns to the total water return pipeline after passing through the stop valve 8, the water pump 9, the pressure sensor 10, the left cutting motor 17 and the left cutting box 16 in sequence. Similarly, the stop valve 8 is used for opening and closing the loop, the water pump 9 is used as a power element of the cooling loop, the pressure sensor 10 monitors the loop pressure in real time, the left cutting motor 17 and the left cutting box 16 are of water cooling structures, cooling channels are arranged inside the left cutting motor and the left cutting box, and cooling liquid enters the channels and takes away heat generated by components through heat exchange to achieve the cooling effect.
And the cooling liquid in the third cooling loop returns to the total water return pipeline after passing through the stop valve 8, the water pump 9, the pressure sensor 10, the right cutting motor 18 and the right cutting box 19 in sequence. Similarly, the stop valve 8 is used for opening and closing the loop, the water pump 9 is used as a power element of the cooling loop, the pressure sensor 10 monitors the pressure of the loop in real time, the right cutting motor 18 and the right cutting box 19 are both of a water cooling structure, cooling flow channels are arranged in the water cooling structure, and cooling liquid enters the flow channels and takes away heat generated by components through heat exchange to realize the cooling effect.
The cooling liquid in the fourth cooling loop also passes through a stop valve 8, a water pump 9, a pressure sensor 10, a crushing motor 20, a left transportation motor 21, a right transportation motor 22, a left loading motor 23 and a right loading motor 24 in sequence and then returns to the total water return pipeline. Similarly, the stop valve 8 is used for opening and closing the loop, the water pump 9 is used as a power element of the cooling loop, the pressure sensor 10 monitors the loop pressure in real time, the crushing motor 20, the left transporting motor 21, the right transporting motor 22, the left loading motor 23 and the right loading motor 24 are all of water cooling structures, cooling flow channels are arranged inside the motors, and cooling liquid enters the flow channels and takes away heat generated by components through heat exchange to achieve the cooling effect.
The cooling liquid converged to the total return line passes through the air cooler 2, and the air cooler 2 is connected with the total return line through a hose. The cooling liquid in the water return pipeline is cooled through the air cooler 2, and heat brought out from each device or component by the cooling liquid is dissipated. The air cooler 2 may be a plate-fin air cooler and may be provided with a fan to increase the flow rate of cooling air. The safety valve 1 is connected in parallel in a loop of the air cooler 2, during design, the set pressure of the safety valve 1 is 1.5Mpa, the situation that the total return water pressure is too high and damages a radiating fin of the air cooler 2 is avoided, and once the pressure of the safety valve 1 exceeds the set value, the safety valve 1 sends a fault signal to a unit control system.
the cooling liquid flows through the air cooler 2 and then is filtered by the filter 3 to flow back to the cooling liquid tank 5. The present application arranges the filter 3 at the rear end of the air cooler 2 for filtering impurities in the return line. The filtering precision of the filter 3 is 20 microns, and a signaling device is arranged, so that a fault signal is sent to a unit control system after the filter 3 is blocked.
The cooling liquid tank 5 is provided with a water level sensor 7, a water temperature sensor 4 and an air filter 6. The water level sensor 7 monitors the water level of cooling liquid in the cooling liquid tank in real time, if the water level is too low, a signal is transmitted to the unit control system, the unit control system prompts a water level alarm, and at the moment, the unit control system can be started when the cooling liquid needs to be added to reach the minimum water level. And the condition that the water level is too high basically does not exist, because the real-time water level can be observed when the unit cooling liquid is filled, the water level is ensured to be normal. In the working process, the cooling liquid is only reduced, the increase condition cannot occur, but an overhigh water level alarm program can also be added in the unit control system.
The water temperature sensor 4 monitors the temperature of the cooling liquid in real time, if the temperature of the cooling liquid is too high, the cooling system is indicated to be in fault, and the unit control system sends a fault signal to perform shutdown inspection. If the temperature of the cooling liquid is lower than 0 ℃, the unit control system controls the air cooler 2 to stop working, and the air cooler 2 is equivalent to a circulating pipeline at the moment. The air filter 6 ensures the balance of the internal and external pressure of the cooling liquid tank 5 and prevents other pollutants such as dust from entering the cooling liquid tank 5.
The utility model discloses cooling system combines water-cooling method, air-cooled cooling method and refrigerant cooling method, has solved the drawback of a large amount of water, has guaranteed the cooling effect of each part again simultaneously. The cooling liquid is conveyed to each cooling loop through the water pump, the cooling liquid carries heat out after passing through each piece of equipment to be cooled, the temperature of the cooling liquid is raised, the cooling liquid after the temperature rise of each cooling loop is converged into one path, then the cooling liquid is cooled through the air cooler, and the heat carried out from the equipment is dissipated. In addition, this embodiment is directed at special parts like the converter case, and through refrigerant cooler with coolant temperature control in certain scope, and then realize that the converter case works under the state that is close to the constant temperature, improves the stability of its work.
The utility model discloses in addition to providing foretell cooling system, still provide an open-air coal mining equipment, this open-air coal mining equipment has oil pump motor 13, left walking motor 14, right walking motor 15, left cutting motor 17, left cutting box 16, right cutting motor 18, right cutting box 19, broken motor 20, left transportation motor 21, right transportation motor 22, left loading motor 23, right loading motor 24. In addition, the open-pit coal mining equipment further comprises a cooling system for performing cooling treatment on each equipment, and the cooling system can adopt the structure and is not repeated.
Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and therefore, various modifications performed according to the principle of the present invention should be understood as falling into the protection scope of the present invention.
Claims (9)
1. A cooling system, comprising:
A coolant tank for holding a coolant;
A first cooling loop, a second cooling loop, a third cooling loop and a fourth cooling loop, wherein the liquid inlet of a cooling liquid pipeline of the cooling liquid tank is respectively connected with the liquid outlet of a cooling liquid tank;
The four cooling loops comprise cooling liquid pipelines, stop valves arranged on the cooling liquid pipelines, water pumps, pressure sensors and motors to be cooled;
The first cooling loop further comprises a refrigerant cooler and a frequency converter box which are sequentially arranged on the cooling liquid pipeline of the first cooling loop and used for cooling the cooling liquid on the cooling liquid pipeline according to the working temperature requirement of the frequency converter box;
Wherein, set up on the wet return line between four cooling circuit's coolant pipe way liquid outlets and the liquid return mouth of coolant liquid case and be used for carrying on the air cooler that cools off to the coolant liquid of each parts heat that flows back.
2. The cooling system according to claim 1, wherein the motor to be cooled on the first cooling circuit includes an oil pump motor, a left travel motor and a right travel motor which are sequentially arranged behind the inverter box.
3. the cooling system according to claim 2, wherein the motors to be cooled on the second cooling circuit comprise a left cutting motor and a left cutting box which are arranged in sequence behind the pressure transmitter.
4. The cooling system according to claim 3, wherein the motors to be cooled on the third cooling circuit comprise a right cutting motor and a right cutting box which are arranged in sequence behind the pressure transmitter.
5. The cooling system of claim 4, wherein the motors to be cooled on the fourth cooling loop comprise a crushing motor, a left transport motor, a right transport motor, a left loading motor and a right loading motor which are arranged behind the pressure transmitter in sequence.
6. The cooling system according to any one of claims 1 to 5, further comprising a relief valve connected in parallel with the air cooler.
7. The cooling system of claim 6, further comprising a water temperature sensor, a water level sensor, and an air filter disposed on the coolant tank.
8. The cooling system according to claim 7, further comprising a filter provided on the water return line between the wind cooler and the coolant tank.
9. An open-pit coal mining apparatus, characterized by comprising a cooling system according to any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920488105.4U CN209761420U (en) | 2019-04-11 | 2019-04-11 | Open-air coal mining equipment and cooling system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920488105.4U CN209761420U (en) | 2019-04-11 | 2019-04-11 | Open-air coal mining equipment and cooling system thereof |
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| Publication Number | Publication Date |
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| CN209761420U true CN209761420U (en) | 2019-12-10 |
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| CN201920488105.4U Active CN209761420U (en) | 2019-04-11 | 2019-04-11 | Open-air coal mining equipment and cooling system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007952A (en) * | 2021-03-12 | 2021-06-22 | 神华神东煤炭集团有限责任公司 | Mine cooling system |
-
2019
- 2019-04-11 CN CN201920488105.4U patent/CN209761420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007952A (en) * | 2021-03-12 | 2021-06-22 | 神华神东煤炭集团有限责任公司 | Mine cooling system |
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