Cooling control system for coal mine hydraulic system

Abstract

The invention belongs to the technical field of coal mine equipment, particularly relates to a cooling control system for a coal mine hydraulic system, and aims to solve the problems that an existing cooling mode is single, and a cooling strategy cannot be flexibly and accurately adjusted according to the actual working state of the hydraulic system. A hydraulic oil pipe is arranged on one side surface of the hydraulic oil tank; one end of the hydraulic oil pipe is communicated with the hydraulic oil tank; the cooling control system has the beneficial effects that an innovative heat dissipation mode combining air cooling and water cooling is adopted, it is ensured that a hydraulic system stably operates within a proper temperature interval, the problems that the viscosity of hydraulic oil is reduced, the lubricating performance becomes poor, and equipment abrasion is aggravated due to the fact that the oil temperature is too high are effectively solved, and the service life of the hydraulic system is prolonged. The service life of key components of the hydraulic system is remarkably prolonged, temperature-controllable intelligent adjustment adopts air cooling and water cooling to jointly cool or independently adopts water cooling to cool, and the energy-saving effect is remarkable.

Description

Technical Field

[0001] The invention relates to a temperature reduction control system, in particular to a temperature reduction control system for a coal mine hydraulic system, and belongs to the technical field of coal mine equipment. Background Art

[0002] In coal mining operations, the hydraulic system plays a vital role. For example, it is used to drive the operation of coal mining machines, hydraulic supports and other equipment. However, due to the harsh environment underground in coal mines, the hydraulic system will generate a lot of heat during long-term continuous operation due to factors such as the continuous circulation and friction of the hydraulic oil. If the hydraulic system cannot be cooled down in a timely and effective manner, the hydraulic oil temperature will be too high, which will affect the viscosity and lubrication properties of the hydraulic oil, reduce the working efficiency of the hydraulic system, increase equipment wear and failure rate, and may even cause safety accidents.

[0003] In the prior art, there is a pneumatic safety explosion-proof hydraulic oil cooling and cooling device disclosed in announcement number CN204213107U, which only needs to be connected to a compressed air source to work, and only discharges cold air, does not generate any waste, and therefore does not cause pollution to the environment; the above-mentioned prior art solutions have the following shortcomings: when in use, this type of hydraulic oil cooling and cooling device only adopts a single cooling method, and is unable to flexibly and accurately adjust the cooling strategy according to the actual working state of the hydraulic system, resulting in low heat dissipation efficiency, and it is difficult to meet the needs of long-term, efficient and stable operation of the coal mine hydraulic system. Summary of the invention

[0004] The purpose of the present invention is to provide a cooling control system for a coal mine hydraulic system in order to solve the problem that the above-mentioned device has a single cooling method and cannot flexibly and accurately adjust the cooling strategy according to the actual working state of the hydraulic system.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A cooling control system for a coal mine hydraulic system, comprising a hydraulic oil tank, a hydraulic oil pipe is arranged on one side surface of the hydraulic oil tank, one end of the hydraulic oil pipe is connected to the hydraulic oil tank and extends into the hydraulic oil tank, and a display controller is fixedly installed on one side of the hydraulic oil tank; A cooling pipe is provided on the outer surface of the hydraulic oil pipe, one end of the cooling pipe is connected to pipe 2, a coolant tank is installed on the surface of one side of the hydraulic oil tank, a cooling pump is installed on the surface of the coolant tank, the output end of the cooling pump is connected to one end of pipe 2, the input end of the cooling pump is connected to pipe 1, and one end of pipe 1 extends into the coolant tank.

[0006] As a further solution of the present invention: one end of the cooling pipe away from the pipeline 2 is connected to a coolant return pipe, and the other end of the coolant return pipe is connected to the coolant tank.

[0007] As a further solution of the present invention: an electric guide rail is fixedly installed on the surface of the hydraulic oil tank, a guide block is slidably connected to the surface of the electric guide rail, a mounting frame is fixedly installed on one end of the guide block, and a cooling fan is installed in the mounting frame.

[0008] As a further solution of the present invention: heat dissipation fins are installed on the surfaces of the coolant tank and the hydraulic oil tank.

[0009] As a further solution of the present invention: a temperature sensor is installed inside the hydraulic oil tank and near the oil outlet of the hydraulic oil pipe.

[0010] As a further solution of the present invention: the cooling pipe adopts a spiral structure and surrounds the surface of the hydraulic oil pipe.

[0011] As a further solution of the present invention: a liquid level sensor is installed on the surface of the coolant tank, the detection end of the liquid level sensor extends into the inside of the coolant tank, an alarm is fixedly installed on the surface of the coolant tank and on one side of the liquid level sensor, and a liquid level gauge is integrally formed on the outer surface of the coolant tank.

[0012] As a further solution of the present invention: the liquid level sensor, the alarm, the cooling pump, the temperature sensor, the cooling fan and the electric guide rail are all electrically connected to the display controller.

[0013] The beneficial effects of the present invention are: The present invention is provided with a hydraulic oil tank, a hydraulic oil pipe, a coolant tank, a cooling pipe, a coolant return pipe, a temperature sensor, a liquid level meter, a heat sink fin, an electric guide rail, a display controller, a heat sink fan, a cooling pump and a liquid level sensor and other structures. The temperature reduction control system adopts an innovative heat dissipation mode combining air cooling and water cooling. Under high temperature conditions, air cooling and water cooling act at the same time. The high-speed operation of the heat sink fan accelerates the air flow to take away heat, and the coolant circulation in the cooling pipe absorbs heat. The two complement each other, greatly improving the heat dissipation efficiency, and can quickly and effectively reduce the hydraulic oil temperature to ensure that the hydraulic system operates stably within a suitable temperature range, effectively avoiding the problems of decreased viscosity of the hydraulic oil, deterioration of lubrication performance and increased equipment wear caused by excessively high oil temperature, and significantly extending the service life of key components of the hydraulic system. The temperature-controlled intelligent adjustment adopts air and water cooling for cooling together or water cooling alone for cooling, and the energy-saving effect is remarkable. The cooling pipe adopts a spiral structure to surround the hydraulic oil pipe, which greatly increases the contact area and contact time between the coolant and the hydraulic oil pipe, making the heat exchange more sufficient and further improving the water-cooled heat dissipation effect. At the same time, the cooling fins are respectively installed on the surface of the coolant tank and the hydraulic oil tank to assist the heat dissipation process, further enhancing the heat dissipation capacity of the entire device. The hydraulic system can also always maintain a good heat dissipation state and maintain efficient and stable operating performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A side view structural schematic diagram of; Figure 3 It is a schematic diagram of the structure of the guide block, the cooling fan and the electric guide rail in the present invention; Figure 4 It is a schematic diagram of the structure of the cooling pipe and the cooling pump in the present invention; Figure 5 It is a schematic diagram of the internal partial structure of the coolant tank in the present invention; In the figure: 1. Hydraulic oil tank; 2. Hydraulic oil pipe; 3. Coolant tank; 4. Cooling pipe; 5. Coolant return pipe; 6. Temperature sensor; 7. Liquid level gauge; 9. Heat dissipation fins; 10. Electric guide rails; 11. Guide blocks; 12. Display controller; 13. Cooling fan; 14. Cooling pump; 15. Pipeline 1; 16. Pipeline 2; 17. Alarm; 18. Liquid level sensor; 19. Mounting bracket. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] Embodiment 1, as Figures 1 to 5 As shown, a cooling control system for a coal mine hydraulic system includes a hydraulic oil tank 1, a hydraulic oil pipe 2 is arranged on one side surface of the hydraulic oil tank 1, one end of the hydraulic oil pipe 2 is connected to the hydraulic oil tank 1 and extends into the hydraulic oil tank 1, and a display controller 12 is fixedly installed on one side of the hydraulic oil tank 1; A cooling pipe 4 is provided on the outer surface of the hydraulic oil pipe 2, one end of the cooling pipe 4 is connected to the pipe 2 16, a coolant tank 3 is installed on the surface of one side of the hydraulic oil tank 1, a cooling pump 14 is installed on the surface of the coolant tank 3, the output end of the cooling pump 14 is connected to one end of the pipe 2 16, the input end of the cooling pump 14 is connected to the pipe 1 15, one end of the pipe 1 15 extends into the coolant tank 3, the end of the cooling pipe 4 away from the pipe 2 16 is connected to the coolant return pipe 5, and the other end of the coolant return pipe 5 is connected to the coolant tank 3.

[0017] The cooling pipe 4 adopts a spiral structure to surround the surface of the hydraulic oil pipe 2 to increase the contact area between the coolant and the hydraulic oil pipe 2 and improve the heat exchange efficiency. One end of the cooling pipe 4 is connected to the pipe 2 16, and the other end is connected to the coolant return pipe 5. The coolant return pipe 5 is connected to the coolant tank 3. The cooling pump 14 installed on the surface of the coolant tank 3 has its output end connected to the pipe 2 16 and its input end connected to the pipe 1 15, and the pipe 1 15 extends into the coolant tank 3. The cooling pump 14 is responsible for driving the coolant to circulate between the cooling pipe 4 and the coolant tank 3 to achieve water-cooled heat dissipation of the hydraulic oil pipe 2.

[0018] Embodiment 2 is an improvement on embodiment 1: an electric guide rail 10 is fixedly mounted on the surface of the hydraulic oil tank 1, a guide block 11 is slidably connected to the surface of the electric guide rail 10, a mounting frame 19 is fixedly mounted on one end of the guide block 11, and a cooling fan 13 is installed in the mounting frame 19.

[0019] The position of the cooling fan 13 can be adjusted by the electric guide rail 10 so that the cooling fan 13 can be better cooled by air on the hydraulic oil tank 1 or the coolant tank 3 .

[0020] Heat dissipation fins 9 are installed on the surfaces of the coolant tank 3 and the hydraulic oil tank 1 .

[0021] The heat dissipation fins 9 are installed on the surface of the coolant tank 3 and the hydraulic oil tank 1, which can greatly increase the surface area for heat dissipation. The heat dissipation fins 9 can also use natural convection to dissipate heat. Natural convection is the movement of fluid caused by the temperature difference between the surface of an object and the surrounding fluid (such as air), thereby taking away heat.

[0022] A temperature sensor 6 is installed inside the hydraulic oil tank 1 and near the oil outlet of the hydraulic oil pipe 2 .

[0023] A temperature sensor 6 is installed inside the hydraulic oil tank 1 near the oil outlet of the hydraulic oil pipe 2 for real-time monitoring of the temperature of the hydraulic oil.

[0024] The cooling pipe 4 adopts a spiral structure and surrounds the surface of the hydraulic oil pipe 2 .

[0025] The spiral structure of the cooling pipe 4 can maximize the contact area with the hydraulic oil pipe 2. The spiral structure makes the path of the coolant flowing in the cooling pipe 4 longer. Compared with a simple straight path, the coolant stays in the spiral cooling pipe for a longer time. This provides more time for heat to be transferred from the hydraulic oil pipe 2 to the coolant, and the spiral structure allows the coolant to evenly surround the hydraulic oil pipe 2, so that the heat of each part of the hydraulic oil pipe 2 can be effectively absorbed.

[0026] A liquid level sensor 18 is installed on the surface of the coolant tank 3, and the detection end of the liquid level sensor 18 extends to the inside of the coolant tank 3. An alarm 17 is fixedly installed on the surface of the coolant tank 3 and on one side of the liquid level sensor 18. A liquid level gauge 7 is integrally formed on the outer surface of the coolant tank 3.

[0027] A liquid level sensor 18 is installed on the surface of the coolant tank 3 , and a detection end of the liquid level sensor 18 extends into the interior of the coolant tank 3 , so as to monitor the liquid level of the coolant in the coolant tank 3 .

[0028] The liquid level sensor 18 , the alarm 17 , the cooling pump 14 , the temperature sensor 6 , the cooling fan 13 and the electric guide rail 10 are all electrically connected to the display controller 12 .

[0029] The display controller 12 receives signals from the temperature sensor 6 and the liquid level sensor 18, and controls the cooling pump 14, the cooling fan 13 and the electric guide rail 10 according to a preset control strategy, and displays relevant information such as the hydraulic oil temperature, the coolant level, etc. through the display panel. When the liquid level sensor 18 detects an abnormal coolant level, the display controller 12 will control the alarm 17 to send an alarm signal. In addition, the surfaces of the coolant tank 3 and the hydraulic oil tank 1 are both equipped with cooling fins 9 to further assist in heat dissipation.

[0030] When in use, after the coal mine hydraulic system is started, the temperature sensor 6 starts to monitor the temperature of the hydraulic oil in real time, and the display controller 12 continuously receives the temperature signal from the temperature sensor 6 and compares it with the preset temperature threshold; Low temperature state The hydraulic oil temperature is lower than the first threshold: If the hydraulic oil temperature is lower than the preset first threshold, the display controller 12 determines that the hydraulic oil temperature is low at this time and no strong heat dissipation is required. At this time, the cooling pump 14 and the cooling fan 13 are both in a low-speed operation or stopped state, and only rely on the heat dissipation fins 9 on the surface of the hydraulic oil tank 1 and the coolant tank 3 to dissipate heat naturally, so as to reduce energy consumption and avoid the hydraulic oil temperature being too low to affect the normal operation of the system; The hydraulic oil temperature in the medium temperature state is between the first threshold and the second threshold: When the hydraulic oil temperature rises to between the first threshold and the second threshold, for example, the display controller 12 starts the water cooling mode, and the specific operation is as follows: The cooling pump 14 is controlled to start at an appropriate speed, so that the coolant circulates between the coolant tank 3 and the cooling pipe 4. When the coolant flows in the cooling pipe 4, it absorbs the heat of the hydraulic oil pipe 2, thereby reducing the temperature of the hydraulic oil. At this time, the cooling fan 13 still maintains a low speed operation or a stopped state, and the rise of the hydraulic oil temperature is mainly controlled by water cooling; High temperature state The hydraulic oil temperature is higher than the second threshold: Once the hydraulic oil temperature exceeds the second threshold, the display controller 12 determines that it is necessary to strengthen the heat dissipation to quickly reduce the hydraulic oil temperature, and immediately starts the heat dissipation mode combining air cooling and water cooling, further increases the speed of the cooling pump 14, increases the circulation flow of the coolant, and enhances the water cooling heat dissipation effect; At the same time, the cooling fan 13 is controlled to run at a high speed, and the position of the cooling fan 13 is adjusted by the electric guide rail 10 to align it with the hydraulic oil pipe 2 and the coolant tank 3, thereby accelerating the air flow and taking away more heat. The wind blown by the cooling fan 13 can not only directly cool the hydraulic oil pipe 2, but also cool the coolant in the coolant tank 3, thereby improving the efficiency of the entire cooling system.

[0031] Temperature drop control: Under the combined effect of air cooling and water cooling, when the hydraulic oil temperature gradually drops below the second threshold but is still higher than the first threshold, the display controller 12 will gradually reduce the speed of the cooling fan 13 until the cooling fan 13 is stopped, and only the water cooling mode is retained to continue running, so as to maintain the hydraulic oil temperature within a suitable range and achieve energy saving. When the hydraulic oil temperature drops below the first threshold, the heat dissipation control strategy of the low temperature state is entered again; Coolant level monitoring and alarm: During the entire heat dissipation process, the liquid level sensor 18 monitors the liquid level of the coolant in the coolant tank 3 in real time. When the liquid level is lower than the preset minimum liquid level, the display controller 12 immediately controls the alarm 17 to send an alarm signal to remind the staff to add coolant in time to ensure the normal operation of the cooling system.

[0032] Through the above intelligently controlled combined heat dissipation method of air cooling and water cooling, the temperature reduction control system in this embodiment can flexibly adjust the heat dissipation strategy according to the actual temperature of the hydraulic oil, effectively control the temperature of the hydraulic oil, improve the operating stability and reliability of the coal mine hydraulic system, and take into account energy saving and safety needs.

[0033] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cooling control system for a coal mine hydraulic system, comprising a hydraulic oil tank (1), characterized in that: A hydraulic oil pipe (2) is provided on one side surface of the hydraulic oil tank (1), one end of the hydraulic oil pipe (2) is connected to the hydraulic oil tank (1) and extends into the hydraulic oil tank (1), and a display controller (12) is fixedly mounted on one side of the hydraulic oil tank (1); A cooling pipe (4) is provided on the outer surface of the hydraulic oil pipe (2), one end of the cooling pipe (4) is connected to a second pipe (16), a coolant tank (3) is mounted on one side surface of the hydraulic oil tank (1), a cooling pump (14) is mounted on the surface of the coolant tank (3), an output end of the cooling pump (14) is connected to one end of the second pipe (16), an input end of the cooling pump (14) is connected to a first pipe (15), one end of the first pipe (15) extends into the coolant tank (3).

2. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: One end of the cooling pipe (4) away from the second pipe (16) is connected to a coolant return pipe (5), and the other end of the coolant return pipe (5) is connected to the coolant tank (3).

3. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: An electric guide rail (10) is fixedly mounted on the surface of the hydraulic oil tank (1), a guide block (11) is slidably connected to the surface of the electric guide rail (10), a mounting frame (19) is fixedly mounted on one end of the guide block (11), and a cooling fan (13) is mounted in the mounting frame (19).

4. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: Heat dissipation fins (9) are installed on the surfaces of the coolant tank (3) and the hydraulic oil tank (1).

5. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: A temperature sensor (6) is installed inside the hydraulic oil tank (1) and at a position close to the oil outlet of the hydraulic oil pipe (2).

6. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: The cooling pipe (4) adopts a spiral structure and surrounds the surface of the hydraulic oil pipe (2).

7. The temperature reduction control system for a coal mine hydraulic system according to claim 1, characterized in that: A liquid level sensor (18) is installed on the surface of the coolant tank (3), a detection end of the liquid level sensor (18) extends into the interior of the coolant tank (3), an alarm (17) is fixedly installed on the surface of the coolant tank (3) and located on one side of the liquid level sensor (18), and a liquid level meter (7) is integrally formed on the outer surface of the coolant tank (3).

8. The temperature reduction control system for a coal mine hydraulic system according to claim 7, characterized in that: The liquid level sensor (18), the alarm (17), the cooling pump (14), the temperature sensor (6), the cooling fan (13) and the electric guide rail (10) are all electrically connected to the display controller (12).

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