Temperature control system of large mine car

Abstract

The utility model discloses a temperature control system of a large mine car. The temperature control system comprises an electric appliance cabinet, a motor, a water pump and a heat exchanger, the electric appliance cabinet is connected to the motor through the heat conduction pipe, the motor is connected to a water inlet of the water pump through the heat conduction pipe, a water outlet of the water pump is connected to the heat exchanger through the heat conduction pipe, and the heat exchanger is connected to the electric appliance cabinet through the heat conduction pipe. Cooling liquid circularly flows in the whole system through the water pump, flows into the electric appliance cabinet after being cooled by the heat exchanger to cool the heating module, and then flows into the motor to cool the motor. According to the utility model, through tracking and analyzing the real-time operation state of the equipment, the temperature is controlled purposefully, so that the energy waste is avoided, the efficiency is improved, and the safe and stable operation of the equipment is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature control of large mining cars, in particular to a temperature control system of a large mining car. Background Art

[0002] For the transportation of earth and stone in mining areas of several major industries such as metallurgy, nonferrous metals, chemicals, coal, building materials and hydropower, in order to improve transportation efficiency, reduce transportation costs, and reduce traffic density within the mining area, we strive to use large-tonnage mining cars (over 100T) as much as possible. With the deepening of the national industrial structure adjustment and the need for energy conservation and emission reduction, the electrification of large mining cars is also constantly advancing. The temperature control of high-power motors and electrical equipment in their drive systems is an important guarantee for the safe and efficient operation of vehicles. At present, this part of large mining cars mostly uses a separate air cooling system or water cooling system for temperature control. In actual applications, the air cooling system is large in size; the multi-air duct design is very complex; the mine environment pollution level is high, which is easy to affect the ventilation effect; and air cooling heat dissipation cannot meet the long-term full-load operation in a high temperature environment. Independent water cooling of each device will also cause waste of energy and space, and is not conducive to vehicle management. Utility Model Content

[0003] The purpose of the utility model is to solve the problems raised in the background technology, and to propose a temperature control system for a large mining car by analyzing the thermal performance of motors and electrical equipment.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temperature control system for a large mining car, comprising an electrical cabinet, a motor, a water pump and a heat exchanger; the electrical cabinet is connected to the motor through a heat pipe, the motor is connected to the water inlet of the water pump through the heat pipe, the water outlet of the water pump is connected to the heat exchanger through the heat pipe, the heat exchanger is connected to the electrical cabinet through the heat pipe, and coolant is arranged in the heat pipe.

[0005] Furthermore, a plurality of heating modules and a water-cooling plate are arranged in the electrical cabinet; the heating end of the heating module is closely attached to the water-cooling plate, and the water inlet and outlet of the water-cooling plate are connected to the heat conducting pipe.

[0006] Furthermore, the motor is a water-cooled motor with a heat conduction channel embedded inside; the water inlet of the heat conduction channel inside the motor is connected to the water outlet of the electrical cabinet, and the water outlet of the heat conduction channel inside the motor is connected to the water inlet of the water pump.

[0007] Furthermore, a cold plate and a fan are arranged inside the heat exchanger; both ends of the cold plate are connected to the heat pipe, a coolant flow channel is arranged inside the cold plate, a plurality of cooling fins are arranged outside the coolant flow channel, and the fan is closely attached to the cooling fins.

[0008] Furthermore, the coolant flow channel of the cold plate is connected to the kettle through a heat pipe.

[0009] Furthermore, the heat conducting pipe is a hose.

[0010] Furthermore, the water cooling plate inside the electrical cabinet is made of aluminum or copper, and the cold plate inside the heat exchanger is made of aluminum or copper.

[0011] Furthermore, the kettle is located at a higher level than the heat exchanger.

[0012] Furthermore, the coolant is prepared by mixing 30%-60% of ethylene glycol and pure water.

[0013] Furthermore, the electrical cabinet is made of sheet metal.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the water circuit is designed comprehensively considering the equipment with high heat generation, the water cooling equipment is selected, and the heat dissipation effect of the cooling system is coordinated through the controller, so as to achieve the purpose of meeting the heat dissipation demand without wasting energy, while also saving space on the vehicle, and providing a reliable solution for temperature control and energy saving and emission reduction of large mining car drive systems.

[0015] In order to more clearly illustrate the functional characteristics and structural parameters of the utility model, further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the connection relationship between the various parts of a temperature control system for a large mining car;

[0018] Figure 2 It is a schematic diagram of the connection between the heating module and the water cooling plate;

[0019] The reference numerals in the figure are: 1-electrical cabinet, 2-heating module, 3-motor, 4-water pump, 5-heat exchanger, 6-cold plate, 7-fan, 8-kettle, 9-water inlet and outlet, 10-water cooling plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] like Figure 1As shown, a temperature control system of a large mining car includes an electrical cabinet 1, a motor 3, a water pump 4 and a heat exchanger 5; the electrical cabinet 1 is connected to the motor 3 through a heat pipe, the motor 3 is connected to the water inlet of the water pump 4 through a heat pipe, the water outlet of the water pump 4 is connected to the heat exchanger 5 through a heat pipe, the heat exchanger 5 is connected to the electrical cabinet 1 through a heat pipe, and a coolant is arranged in the heat pipe. A cold plate 6 and a fan 7 are arranged inside the heat exchanger 5; both ends of the cold plate 6 are connected to the heat pipe, a coolant flow channel is arranged inside the cold plate 6, a plurality of heat dissipation fins are arranged outside the coolant flow channel, and the fan 7 is closely attached to the heat dissipation fins; the coolant flow channel of the cold plate 6 is connected to a kettle 8 through a heat pipe, and the kettle 8 is used to initially fill the system with coolant and replenish the coolant. The coolant circulates in the entire system through the water pump 4. After being cooled by the heat exchanger 5, the coolant flows into the electrical cabinet 1 to cool the heating module 2 (the cooling priority of the heating module 2 is higher than that of the motor 2), and then flows into the motor 3 to cool the motor 3.

[0022] like Figure 2 As shown, a plurality of heating modules 2 and a water cooling plate 10 are arranged in the electrical cabinet 1; the heating end of the heating module 2 is closely attached to the water cooling plate 10, and the water inlet and outlet 9 of the water cooling plate 10 are connected to the heat conducting pipe.

[0023] Specifically, in one embodiment, the motor 3 is a water-cooled motor with a heat conduction channel pre-buried inside; the water inlet of the heat conduction channel inside the motor 3 is connected to the water outlet of the electrical cabinet 1, and the water outlet of the heat conduction channel inside the motor 3 is connected to the water inlet of the water pump 4.

[0024] Specifically, in one embodiment, the heat pipe is a hose for easy movement; a three-way joint is used at the connection between the heat pipe and each component; the water cooling plate 10 inside the electrical cabinet 1 is made of aluminum or copper, and the cold plate 6 inside the heat exchanger 5 is made of aluminum or copper.

[0025] Specifically, in one embodiment, the kettle 8 is located at a higher level than the heat exchanger 5, and the height difference between the kettle 8 and the heat exchanger 5 is used to inject coolant into the system; the size of the kettle 8 is adjusted and replaced according to the heat dissipation required by the system.

[0026] Specifically, in one embodiment, the coolant is prepared by mixing 30%-60% ethylene glycol with pure water.

[0027] Specifically, in one embodiment, the electrical cabinet 1 is made of sheet metal.

[0028] Specifically, in one embodiment, the controller is connected to the temperature sensors inside the water pump 4 and the heat exchanger 5, monitors the system temperature in real time, and adjusts the flow rate of the water pump 4 and the speed of the fan 7 according to the temperature sensor value. The specific process is as follows:

[0029] (1) Calculation of system heat generation

[0030] Calculate the heat generated by each heating module 2 in the electrical cabinet 1, the formula is P = I2r; determine the maximum allowable temperature T of each heating module 2 max ;

[0031] (2) Water cooling system design

[0032] Set the ambient temperature T, select the coolant (50% ethylene glycol aqueous solution in this example), and calculate the flow of the main waterway and each branch according to the required flow of the heating module 2 and the waterway diagram;

[0033] According to the number and relative positions of the cooled equipment (heating modules 2), the pipe length and the number of joints are designed according to the water circuit schematic diagram; the standard heat exchanger 5 and water pump 4 are selected based on experience according to the system heat generation.

[0034] (3) Heat dissipation capacity verification

[0035] According to the designed water circuit diagram, calculate the temperature rise of the coolant when it circulates in the system, the formula is: △t = Q / (V×γ×Cp); estimate the required air volume of the cooling system, the formula is: Va = Qw / (△ta×γa×Cpa); check the air volume curve of fan 7, compare the existing fan parameters of heat exchanger 5 with the estimated air volume, if the fan air volume is greater than the calculated air volume, substitute the fan air volume V into the formula to calculate △t.

[0036] The original data parameters for the calculation of the heat exchanger 5 are: the amount of heat that the heat exchanger 5 needs to dissipate and the dimensions of the heat exchanger 5. Given the amount of heat that the heat exchanger 5 needs to dissipate, the required heat dissipation area can be calculated by the following formula: Fs = Qw / (k×Kr×△tm). Compare the existing heat dissipation area of ​​the heat exchanger. If it is larger than the calculated heat dissipation area, the requirement is met.

[0037] The performance verification of water pump 4 is based on the relative position of the cooled equipment on the vehicle and the number of joints in the water circuit to estimate the required water pump head, and the corresponding output flow rate at the head is found by comparing the water pump performance curve.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control system for a large mining car, characterized in that: The invention comprises an electrical cabinet (1), a motor (3), a water pump (4) and a heat exchanger (5); the electrical cabinet (1) is connected to the motor (3) via a heat conducting pipe, the motor (3) is connected to the water inlet of the water pump (4) via a heat conducting pipe, the water outlet of the water pump (4) is connected to the heat exchanger (5) via a heat conducting pipe, the heat exchanger (5) is connected to the electrical cabinet (1) via a heat conducting pipe, and a coolant is arranged in the heat conducting pipe.

2. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The electrical cabinet (1) is provided with a plurality of heating modules (2) and a water cooling plate (10); the heating end of the heating module (2) is in close contact with the water cooling plate (10), and the water inlet and outlet (9) of the water cooling plate (10) are connected to a heat conducting pipe.

3. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The motor (3) is a water-cooled motor with a heat conduction channel pre-buried inside; the water inlet of the heat conduction channel inside the motor (3) is connected to the water outlet of the electrical cabinet (1), and the water outlet of the heat conduction channel inside the motor (3) is connected to the water inlet of the water pump (4).

4. A temperature control system for a large mining vehicle according to claim 1, characterized in that: A cold plate (6) and a fan (7) are arranged inside the heat exchanger (5); both ends of the cold plate (6) are connected to the heat pipe, a coolant flow channel is arranged inside the cold plate (6), a plurality of heat dissipation fins are arranged outside the coolant flow channel, and the fan (7) is closely attached to the heat dissipation fins.

5. A temperature control system for a large mining vehicle according to claim 4, characterized in that: The coolant flow channel of the cold plate (6) is connected to the kettle (8) via a heat conducting pipe.

6. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The heat conducting pipe is a hose.

7. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The water cooling plate (10) inside the electrical cabinet (1) is made of aluminum or copper, and the cold plate (6) inside the heat exchanger (5) is made of aluminum or copper.

8. A temperature control system for a large mining vehicle according to claim 5, characterized in that: The kettle (8) is located at a higher level than the heat exchanger (5).

9. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The cooling liquid is prepared by mixing 30%-60% of ethylene glycol and pure water.

10. A temperature control system for a large mining vehicle according to claim 1, characterized in that: The electrical cabinet (1) is made of metal sheet.

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