A temperature control system for a water conservancy engineering motor

Abstract

The utility model discloses a water conservancy project motor temperature control system is equipped with temperature sensor in the upper guide and lower guide lubricating oil cavity of motor. The temperature control system contains the plate heat exchanger, and its both sides are compressor cooling system and air cooling heat dissipation system respectively, and correspondingly connects the first, second heat exchange pipeline in heat exchanger. Compressor cooling system is sequentially composed of compressor, condenser, expansion valve, and condenser is equipped with condensing fan, and air cooling heat dissipation system sequentially includes water tank, water pump, upper guide and lower guide heat exchanger and reversing valve, and water pump is connected heat exchanger inlet water side through three -way valve, and outlet water side is connected reversing valve through three -way valve, and its first water outlet connects second heat exchange pipeline, and the other road is connected water tank through air cooling radiator. Air cooling radiator is composed of heat dissipation coil pipe, aluminium corrugated tower fin and frequency conversion heat dissipation fan, and flow valve in coil pipe is associated with fan. The invention combines compressor cooling and air cooling heat dissipation double system, can reduce energy consumption and speed down temperature.

Description

Technical Field

[0001] This utility model relates to heat dissipation of hydraulic motors, specifically to a temperature control system for motors used in hydraulic engineering. Background Technology

[0002] The motors in hydraulic engineering projects generate a large amount of heat through friction during power generation (water flowing from high to low) or pumping (water flowing from low to high). Excessive temperatures can damage the motor, sealing devices, and lubricating oil. To extend the service life of these components, it is necessary to maintain each component within a certain temperature range. This invention's temperature control system utilizes cooling water produced by the outdoor unit, which is then piped to the customer's upper and lower motors to cool the lubricating oil. Utility Model Content

[0003] This invention provides a temperature control system for a hydraulic engineering motor. The hydraulic engineering motor includes an upper motor and a lower motor, both of which are equipped with lubricating oil chambers. A temperature sensor is installed within each lubricating oil chamber.

[0004] The temperature control system includes a plate heat exchanger, which contains a first heat exchange pipeline and a second heat exchange pipeline. A compressor cooling system and an air-cooled cooling system are respectively provided on both sides of the plate heat exchanger. The compressor cooling system and the air-cooled cooling system are respectively connected to the first heat exchange pipeline and the second heat exchange pipeline.

[0005] The compressor cooling system includes, in sequence, a compressor, a condenser, and an expansion valve, with the condenser equipped with a condenser fan;

[0006] The air-cooled heat dissipation system includes a water tank, a water pump, a motor heat exchanger, and a reversing valve. The motor heat exchanger includes an upper heat exchanger and a lower heat exchanger. The water pump is connected to the inlet side of both the upper and lower heat exchangers through a first three-way valve. The outlet side of both the upper and lower heat exchangers is connected to the reversing valve through a second three-way valve. The reversing valve has two outlets. The first outlet is connected to the second heat exchange pipeline, and the first outlet is connected to the water tank through the air-cooled radiator. The reversing valve, compressor, and air-cooled radiator are all connected to a temperature sensor.

[0007] Furthermore, the air-cooled radiator includes a heatsink coil, tower fins, and a cooling fan. The heatsink coil is distributed in a meandering manner within the tower fins, and the cooling fan is installed on one side of the fins.

[0008] Furthermore, the tower-shaped fins adopt an aluminum corrugated structure, with the heat dissipation coil wrapped around the outside of the central column of the fins, forming a spiral meandering channel.

[0009] Furthermore, a flow valve is installed inside the heat dissipation coil, and the flow valve is connected to the heat dissipation fan.

[0010] Furthermore, the cooling fan is a variable frequency fan.

[0011] Furthermore, both inlets of the water tank connecting to the second heat exchange pipeline and the radiator coil are equipped with solenoid valves.

[0012] Furthermore, temperature sensors are respectively installed in the lubricating oil chambers of the upper and lower conductive motors and are electrically connected to the PLC controller, which is connected to the compressor and the reversing valve.

[0013] Furthermore, the compressor's cooling system uses copper tubing.

[0014] The advantages of the motor temperature control system in this water conservancy project are as follows:

[0015] 1) High heat dissipation efficiency: The combination of compressor heat dissipation and air cooling system enables rapid cooling.

[0016] 2) Energy saving: The variable frequency fan adjusts the speed as needed, and the flow valve links the fan to reduce energy consumption.

[0017] 3) Intelligent temperature control: The temperature sensor is linked with the PLC to automatically switch the heat dissipation mode and accurately control the temperature.

[0018] 4) Structural optimization: Aluminum corrugated fins are combined with spiral coils to increase the heat dissipation area; copper pipes connect the heat dissipation system, ensuring stability and reliability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a temperature control system for a motor used in water conservancy projects according to this utility model. Detailed Implementation

[0021] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0022] To fully understand this utility model, detailed steps and structures will be presented in the following description to illustrate the technical solution of this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0023] During operation (such as in power generation or pumping), the lubricating oil chambers of the upper and lower motors in hydraulic engineering generate a large amount of heat due to friction. Therefore, temperature sensors are installed in the lubricating oil chambers to monitor the lubricating oil temperature in real time and feed the data back to the temperature control system of this application.

[0024] like Figure 1 As shown, the core component of the temperature control system is a plate heat exchanger 100, which integrates a first heat exchange pipe 101 and a second heat exchange pipe 102, forming an independent heat exchange channel. A compressor cooling system 200 and an air-cooled cooling system 300 are respectively arranged on both sides of the plate heat exchanger 100. The compressor cooling system 200 is connected to the first heat exchange pipe 101, and the air-cooled cooling system 300 is connected to the second heat exchange pipe 102. The dual systems work together to achieve efficient heat exchange while reducing energy consumption.

[0025] Compressor cooling system 200

[0026] The compressor cooling system 200 adopts a circulation principle similar to that of air conditioning refrigeration, and is equipped with a compressor 201, a condenser 202, and an expansion valve 204 in sequence. The components are connected by copper pipes to form a closed loop. A condenser fan 203 is installed outside the condenser 202. After the compressor 201 compresses the high-temperature and high-pressure refrigerant gas, it is condensed into a liquid by the condenser 202. The condenser fan 203 accelerates the heat dissipation process through forced convection. The liquid refrigerant enters the first heat exchange pipe 101 of the plate heat exchanger 100 after being throttled and depressurized by the expansion valve 204. It exchanges heat with the medium on the other side, absorbs heat, vaporizes, and returns to the compressor 201, completing the cycle.

[0027] 300 air-cooled heat dissipation system

[0028] The air-cooled heat dissipation system 300 consists of a water tank 301, a water pump 302, a motor heat exchanger 303, and a reversing valve 304 forming a closed-loop circuit. All components are connected via water pipes (e.g., copper pipes, metal pipes, or PVC pipes) to form a sealed circuit. The motor heat exchanger 303 includes an upper heat exchanger 3031 and a lower heat exchanger 3032, respectively located in the lubrication chambers of the upper and lower motors. The motor heat exchanger 303 is existing technology and will not be described in detail here. All components are connected via metal pipes to form a sealed circuit. The water pump 302 simultaneously provides circulating cooling water to both the upper and lower heat exchangers 3031 and 3032 via a first three-way valve 305. The first three-way valve 305 on the inlet side balances the pressure and flow rate of the two water flows. The outlet water from the upper and lower heat exchangers 3031 and 3032 is collected by a second three-way valve 306 and then fed to the reversing valve 304.

[0029] The first outlet of the reversing valve 304 is connected to the second heat exchange pipe 102 of the plate heat exchanger 100, and the second outlet is connected to the water tank 301 through the air-cooled radiator 307. When the system temperature is high, the reversing valve 304 adjusts the water flow direction so that the high-temperature cooling water preferentially enters the second heat exchange pipe 102 to exchange heat with the compressor cooling system 200; when the temperature is low, the water flows through the air-cooled radiator 307 and is naturally cooled before returning to the water tank 301, realizing the switching of the heat dissipation mode under different operating conditions.

[0030] In an optional embodiment, the air-cooled radiator 307 includes a heat dissipation coil, aluminum corrugated tower fins, and a variable frequency cooling fan. The air-cooled radiator 307 is a common tower radiator, and its heat dissipation coil adopts a spiral and meandering design, wrapped around the outside of the central column of the fins and embedded in the corrugated structure of the tower fins, thereby increasing the contact area and improving heat dissipation efficiency.

[0031] A flow valve is installed inside the cooling coil, which is linked to the cooling fan. When cooling water flows into the cooling coil, the flow valve triggers a signal to start the variable frequency cooling fan. The variable frequency cooling fan automatically adjusts its speed based on the real-time temperature feedback from the temperature sensor; the higher the temperature, the faster the speed, thus achieving dynamic energy-saving control.

[0032] Among them, the two water inlets of the water tank 301, which connects to the second heat exchange pipeline 102 and the air-cooled radiator 307, are equipped with solenoid valves. The two solenoid valves are interlocked (i.e., when one valve is open, the other valve is closed) to prevent water backflow from causing a decrease in heat dissipation efficiency and to ensure the stability of system operation.

[0033] This invention utilizes a PLC for dynamic control. Specifically, a temperature sensor collects real-time temperature data from the lubrication chambers of the upper and lower electric motors and transmits it to the PLC controller. Based on a preset temperature threshold logic, the PLC controller automatically controls the start / stop of the compressor 201 and the opening of the reversing valve 304: when the temperature exceeds the upper limit, the compressor cooling system 200 is activated and the guide plate heat exchanger 100 of the reversing valve 304 is adjusted; when the temperature drops to the set range, the system switches to air-cooled cooling system 300 for natural cooling, achieving fully automated temperature control management. Implementing the corresponding control logic by editing the PLC controller is a common technique used by those skilled in the art and will not be elaborated upon here.

[0034] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A temperature control system for a hydraulic engineering motor, the hydraulic engineering motor comprising an upper motor and a lower motor, the upper motor and the lower motor being provided with lubricating oil chambers, and a temperature sensor being provided within the lubricating oil chambers, characterized in that, The temperature control system includes a plate heat exchanger, which contains a first heat exchange pipeline and a second heat exchange pipeline. A compressor cooling system and an air-cooled cooling system are respectively provided on both sides of the plate heat exchanger. The compressor cooling system and the air-cooled cooling system are respectively connected to the first heat exchange pipeline and the second heat exchange pipeline. The compressor cooling system includes, in sequence, a compressor, a condenser, and an expansion valve, with the condenser equipped with a condenser fan; The air-cooled heat dissipation system includes a water tank, a water pump, a motor heat exchanger, and a reversing valve. The motor heat exchanger includes an upper heat exchanger and a lower heat exchanger. The water pump is connected to the inlet side of both the upper and lower heat exchangers through a first three-way valve. The outlet side of both the upper and lower heat exchangers is connected to the reversing valve through a second three-way valve. The reversing valve has two outlets. The first outlet is connected to the second heat exchange pipeline, and the first outlet is connected to the water tank through the air-cooled radiator. The reversing valve, compressor, and air-cooled radiator are all connected to a temperature sensor.

2. A temperature control system for a hydro-engine according to claim 1, characterized in that, An air-cooled radiator consists of a heatsink coil, tower fins, and a cooling fan. The heatsink coil is distributed in a meandering manner within the tower fins, and the cooling fan is installed on one side of the fins.

3. A temperature control system for a hydro-engine according to claim 2, characterized in that, The tower-style fins adopt an aluminum corrugated structure, with the heat dissipation coil wrapped around the outside of the central column of the fins, forming a spiral meandering channel.

4. A temperature control system for a hydro-engine according to claim 2, characterized in that, The heat dissipation coil is equipped with a flow valve, which is connected to the cooling fan.

5. A temperature control system for a hydro-engine according to claim 3, characterized in that, The cooling fan is a variable frequency fan.

6. A temperature control system for a hydroelectric generator as claimed in claim 2, wherein, Solenoid valves are installed at both inlets of the water tank that connect to the second heat exchange pipeline and the radiator coil.

7. A temperature control system for a hydroelectric generator as claimed in claim 2, wherein, Temperature sensors are installed in the lubricating oil chambers of the upper and lower conductive motors, respectively, and are electrically connected to the PLC controller. The PLC controller is connected to the compressor and the reversing valve.

8. A temperature control system for a hydro-engine according to claim 2, characterized in that, The compressor's cooling system uses copper tubing.

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