Liquid cooling device for frequency converter

Abstract

The utility model provides a kind of liquid cooling equipment for frequency converter, it includes: mounting bracket, mounting bracket includes first support plate and second support plate;Heat exchanger, heat exchanger is set on first support plate, the liquid inlet end of the first passage of heat exchanger is connected the liquid outlet end of frequency converter by first pipeline;Water pump, water pump is set on second support plate, the liquid inlet end of water pump is connected the liquid outlet end of the first passage of heat exchanger by second pipeline, and is connected the liquid inlet end of frequency converter by third pipeline;First temperature sensor, first temperature sensor is set on third pipeline;Electric regulating valve, the liquid inlet end of electric regulating valve is connected the liquid outlet end of the second passage of heat exchanger, and its liquid outlet end is connected the liquid inlet end of cooling tower by fourth pipeline;Fifth pipeline, the liquid inlet end of fifth pipeline is connected the liquid outlet end of cooling tower, and its liquid outlet end is connected the liquid inlet end of the second passage of heat exchanger.The utility model's liquid cooling equipment for frequency converter can carry out high-efficiency heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of radiators, and in particular to a liquid cooling device for frequency converters. Background Technology

[0002] Existing frequency converters for large equipment generate a lot of heat during operation, and the increased temperature of the frequency converter will affect its operation.

[0003] Existing frequency converters generally use air cooling, which involves cooling the frequency converter with a fan, resulting in low cooling efficiency. Utility Model Content

[0004] In view of the above-mentioned problems in the prior art, the purpose of this utility model is to provide a liquid cooling device for frequency converters, which can efficiently and stably dissipate heat from the frequency converter through liquid cooling.

[0005] To address the aforementioned problems, this utility model provides a liquid cooling device for frequency converters, the liquid cooling device for frequency converters comprising:

[0006] The mounting bracket includes a vertically arranged first support plate and a horizontally arranged second support plate connected to the bottom of the first support plate;

[0007] A heat exchanger is mounted on the first support plate. The heat exchanger includes a first channel and a second channel capable of heat exchange. The liquid inlet of the first channel is connected to the liquid outlet of the frequency converter through a first pipe to receive the first coolant from the frequency converter.

[0008] A water pump is mounted on the second support plate. The inlet of the water pump is connected to the outlet of the first channel of the heat exchanger through a second pipe, and is also connected to the inlet of the frequency converter through a third pipe.

[0009] A first temperature sensor is disposed on the third pipe to detect the first temperature of the first coolant in the third pipe;

[0010] An electric regulating valve is provided, the inlet of which is connected to the outlet of the second channel of the heat exchanger, and the outlet is connected to the inlet of the cooling tower via a fourth pipe. The cooling tower is capable of providing a second coolant with a predetermined temperature range and a predetermined pressure range. The flow rate of the second coolant in the second channel can be adjusted by the electric regulating valve.

[0011] The fifth pipe has its inlet end connected to the outlet end of the cooling tower, and its outlet end connected to the inlet end of the second channel of the heat exchanger.

[0012] Furthermore, the liquid cooling device also includes:

[0013] A bladder-type pressure tank is connected to the first pipeline. An air bladder is provided inside the bladder-type pressure tank. When the pressure of the first coolant in the bladder-type pressure tank is greater than the pressure of the first coolant in the first pipeline, the air bladder can inflate, allowing the first coolant in the bladder-type pressure tank to flow into the first pipeline. When the pressure of the first coolant in the bladder-type pressure tank is less than the pressure of the first coolant in the first pipeline, the air bladder can contract, allowing the first coolant in the first pipeline to flow into the bladder-type pressure tank.

[0014] Furthermore, the liquid cooling device also includes:

[0015] A second temperature sensor is disposed on the fifth pipe to detect the second temperature of the second coolant inside the fifth pipe.

[0016] Furthermore, the liquid cooling device also includes:

[0017] A first pressure sensor is disposed on the third pipe to detect a first pressure of the first coolant in the third pipe;

[0018] A second pressure sensor is disposed on the fifth pipe to detect the second pressure of the second coolant within the fifth pipe.

[0019] Furthermore, the water pump comprises two pumps, both of which have their inlet ends connected to the second pipe and both have their outlet ends connected to the third pipe.

[0020] The frequency converter includes multiple frequency converters, each of which has its inlet end connected to the third pipe and its outlet end connected to the first pipe.

[0021] Furthermore, the liquid cooling device also includes:

[0022] A safety valve is provided on the third pipe to discharge the first coolant in the third pipe if the first pressure in the third pipe is greater than a predetermined high pressure.

[0023] Furthermore, the liquid cooling device also includes:

[0024] An exhaust valve is connected to the first pipe, which can discharge gas in the first pipe and prevent the discharge of the first coolant.

[0025] Furthermore, the liquid cooling device also includes:

[0026] A filter, connected to the fifth pipe, is provided to filter the second coolant within the fifth pipe.

[0027] Furthermore, the liquid cooling device also includes:

[0028] A reinforcing rib connects the first support plate and the second support plate, and is located near the connection point between the first support plate and the second support plate.

[0029] Due to the above technical solution, this utility model has the following beneficial effects:

[0030] According to the present invention, a liquid cooling device for a frequency converter uses a first coolant in the cooling channel of the frequency converter to perform liquid cooling heat dissipation on the frequency converter. The first channel of the heat exchanger receives the first coolant from the frequency converter. A water pump draws the first coolant from the first channel of the heat exchanger through a second pipe and returns the first coolant to the frequency converter through a third channel.

[0031] The cooling tower provides a second coolant with a predetermined pressure and temperature range, which is introduced into the first channel of the frequency converter through a fifth pipe. The temperature of the second coolant is lower than that of the first coolant. The second coolant in the second channel can cool the first coolant in the first channel. An electric regulating valve receives the second coolant from the second channel, regulates its flow rate, and then introduces the second coolant into the cooling tower. Thus, efficient and stable heat dissipation of the frequency converter can be achieved through liquid cooling. Attached Figure Description

[0032] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0033] Figure 1 This is a structural diagram of a liquid cooling device for a frequency converter according to an embodiment of the present invention;

[0034] Figure 2 yes Figure 1 Another structural view of the liquid cooling device for the frequency converter in the embodiment;

[0035] Figure 3 This is a schematic diagram of a liquid cooling device, cooling tower, and frequency converter for a frequency converter according to an embodiment of the present invention.

[0036] Figure label:

[0037] 100. Heat exchanger; 210. First pipe; 220. Second pipe; 230. Third pipe; 240. Fourth pipe; 250. Fifth pipe; 310. First temperature sensor; 320. Second temperature sensor; 330. First pressure sensor; 340. Second pressure sensor; 400. Filter; 500. Water pump; 600. Bladder-type pressure tank; 710. Safety valve; 720. Exhaust valve; 730. Electric regulating valve; 810. First support plate; 820. Second support plate; 830. Reinforcing rib; 900. Frequency converter. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0040] The following describes the liquid cooling equipment for frequency converters according to embodiments of this utility model.

[0041] like Figures 1 to 3 As shown, the liquid cooling device for frequency converters in this embodiment of the present invention includes a mounting bracket, a heat exchanger 100, a water pump 500, and a first temperature sensor 310.

[0042] First, the mounting bracket is described. The mounting bracket includes a vertically arranged first support plate 810 and a horizontally arranged second support plate 820 connected to the bottom of the first support plate 810.

[0043] like Figure 1 As shown, other components are mounted on the mounting bracket to provide stable support for other components.

[0044] Next, the heat exchanger 100, water pump 500, and first temperature sensor 310 will be described. The heat exchanger 100 is mounted on the first support plate 810 and includes a first channel and a second channel capable of heat exchange. The inlet end of the first channel is connected to the outlet end of the frequency converter 900 via a first pipe 210 to receive first coolant from the frequency converter 900. The water pump 500 is mounted on the second support plate 820. The inlet end of the water pump 500 is connected to the outlet end of the first channel of the heat exchanger 100 via a second pipe 220 and to the inlet end of the frequency converter 900 via a third pipe 230. The first temperature sensor 310 is mounted on the third pipe 230 to detect the first temperature of the first coolant within the third pipe 230. The first and second channels of the heat exchanger 100 are capable of heat exchange; the heat exchanger 100 is known technology and will not be described in detail here.

[0045] The first coolant from the outlet of the inverter 900 flows into the first pipe 210, and then into the inlet of the first channel of the heat exchanger 100. The inverter 900 has a cooling channel inside for the first coolant to enter and exit, thereby exchanging heat with the inverter 900 through the first coolant.

[0046] The first coolant flows from the outlet of the first channel of the heat exchanger 100 into the second pipe 220, and then from the second pipe 220 into the inlet of the water pump 500. The first coolant is then drawn by the water pump 500 into the third pipe 230, and then from the third pipe 230 into the inlet of the frequency converter 900. This forms the first circulation loop of the first coolant, which provides continuous and stable liquid cooling to the frequency converter 900, resulting in high heat dissipation efficiency.

[0047] The first temperature sensor 310 is installed on the third pipe 230 and can detect the temperature of the first coolant in the third pipe 230, that is, it can obtain the first temperature of the first coolant that will flow into the inverter 900.

[0048] Finally, the electric regulating valve 730 and the fifth pipe 250 are described. The inlet of the electric regulating valve 730 is connected to the outlet of the second channel of the heat exchanger 100, and its outlet is connected to the inlet of the cooling tower via the fourth pipe 240. The cooling tower can provide a second coolant with a predetermined temperature range and a predetermined pressure range, and the flow rate of the second coolant in the second channel can be adjusted by the electric regulating valve 730. The inlet of the fifth pipe 250 is connected to the outlet of the cooling tower, and its outlet is connected to the inlet of the second channel of the heat exchanger 100.

[0049] The second coolant flows from the outlet of the second channel of the heat exchanger 100 to the electric regulating valve 730, then from the electric regulating valve 730 into the fourth pipe 240, and then from the fourth pipe 240 into the cooling tower (the cooling tower cools the second coolant to maintain its temperature within a predetermined temperature range and pressurizes it to maintain its pressure within a predetermined pressure range). The second coolant flows from the cooling tower into the fifth pipe 250, and then from the fifth pipe 250 into the inlet of the second channel of the heat exchanger 100. This forms a second circulation loop for the second coolant, continuously supplying low-temperature second coolant to the second channel of the heat exchanger 100. The second coolant in the second channel continuously cools the first coolant in the first channel, thus enabling the first coolant to continuously and efficiently cool the inverter 900. By regulating the flow rate of the second coolant entering the second channel through the electric regulating valve 730, the heat exchange between the second coolant and the first coolant can be adjusted, thereby stabilizing the first coolant temperature at the required level.

[0050] The above-mentioned liquid cooling equipment for frequency converters uses a first coolant in the cooling channel of frequency converter 900 to perform liquid cooling heat dissipation on frequency converter 900. The first channel of heat exchanger 100 receives the first coolant from frequency converter 900. Water pump 500 draws the first coolant in the first channel of heat exchanger 100 through second pipe 220 and returns the first coolant to frequency converter 900 through third channel.

[0051] The cooling tower provides a second coolant with a predetermined pressure and temperature range, which is input into the first channel of the inverter 900 through a fifth pipe 250. The temperature of the second coolant is lower than that of the first coolant. The second coolant in the second channel can cool the first coolant in the first channel. The electric regulating valve 730 receives the second coolant from the second channel, regulates the flow rate of the second coolant in the second channel, and inputs the second coolant into the cooling tower. Thus, the inverter 900 can be efficiently and stably cooled by liquid cooling.

[0052] In some embodiments of this utility model, the liquid cooling device further includes a bladder-type pressure tank 600. The bladder-type pressure tank 600 is connected to the first pipe 210, and an air bladder is provided inside the bladder-type pressure tank 600. When the pressure of the first coolant in the bladder-type pressure tank 600 is greater than the pressure of the first coolant in the first pipe 210, the air bladder can inflate, thereby allowing the first coolant in the bladder-type pressure tank 600 to flow into the first pipe 210. When the pressure of the first coolant in the bladder-type pressure tank 600 is less than the pressure of the first coolant in the first pipe 210, the air bladder can contract, thereby allowing the first coolant in the first pipe 210 to flow into the bladder-type pressure tank 600.

[0053] like Figure 1As shown, a bladder-type pressure tank 600 is installed on the first pipeline 210.

[0054] When the pressure of the first coolant in the bladder-type pressure tank 600 is greater than the pressure of the first coolant in the first pipe 210, the bladder expands, pushing the first coolant in the bladder-type pressure tank 600 into the first pipe 210, and replenishing the third pipe 230 in time.

[0055] When the pressure of the first coolant in the bladder-type pressure tank 600 is less than the pressure of the first coolant in the first pipe 210, the bladder contracts, and the first coolant in the first pipe 210 flows to the bladder-type pressure tank 600, which can reduce the first pressure of the first coolant in the first pipe 210.

[0056] In some embodiments of this invention, the liquid cooling device further includes a second temperature sensor 320. The second temperature sensor 320 is disposed on the fifth pipe 250 to detect the second temperature of the second coolant within the fifth pipe 250.

[0057] like Figures 2 to 3 As shown, the temperature of the second coolant in the fifth pipe 250 can be detected by the second temperature sensor 320, which is the temperature of the second coolant that will be input into the second channel of the heat exchanger 100.

[0058] In some embodiments of this invention, the liquid cooling device further includes a first pressure sensor 330 and a second pressure sensor 340. The first pressure sensor 330 is disposed on the third pipe 230 to detect the first pressure of the first coolant within the third pipe 230. The second pressure sensor 340 is disposed on the fifth pipe 250 to detect the second pressure of the second coolant within the fifth pipe 250.

[0059] like Figures 1 to 3 As shown, a first pressure sensor 330 is installed on the third pipe 230, and a second pressure sensor 340 is installed on the fifth pipe 250. This allows for accurate determination of the first pressure of the first coolant and the second pressure of the second coolant.

[0060] Furthermore, there are two water pumps 500, with the inlet of each pump 500 connected to the second pipe 220 and the outlet of each pump 500 connected to the third pipe 230. There are multiple frequency converters 900, with the inlet of each frequency converter 900 connected to the third pipe 230 and the outlet of each frequency converter 900 connected to the first pipe 210.

[0061] like Figure 3 As shown, multiple frequency converters 900 are connected in parallel to two water pumps 500. This allows for simultaneous cooling of multiple frequency converters 900, improving the utilization rate of the liquid cooling equipment.

[0062] In some embodiments of this invention, the liquid cooling device further includes a safety valve 720. The safety valve 720 is disposed on the third pipe 230 to discharge the first coolant in the third pipe 230 if the first pressure in the third pipe 230 exceeds a predetermined high pressure.

[0063] like Figure 1 and Figure 3 As shown, a safety valve 720 is installed on the third pipe 230. If the initial pressure of the first coolant in the third pipe 230 exceeds the predetermined high pressure, posing a safety risk, the excess first coolant will be discharged through the safety valve 720 in a timely manner to prevent damage to the pipe or the frequency converter 900 and improve safety.

[0064] Furthermore, the liquid cooling device also includes an exhaust valve 720, which is connected to the first pipe 210 and can discharge the gas in the first pipe 210 and prevent the discharge of the first coolant.

[0065] like Figure 1 and Figure 3 As shown, the first pipe 210 is connected to the exhaust valve 720. When air is mixed into the first circulation loop, the cooling efficiency of the air is low, affecting the overall cooling efficiency. Expelling the air through the exhaust valve 720 allows the first circulation loop to be filled with the first coolant, thereby improving the cooling efficiency.

[0066] In some embodiments of this invention, the liquid cooling device further includes a filter 400. The filter 400 is connected to a fifth pipe 250 to filter the second coolant within the fifth pipe 250.

[0067] like Figure 1 As shown, a filter 400 is installed on the fifth pipe 250. The filter 400 can filter the second coolant in the fifth pipe 250, preventing impurities in the second coolant from entering the second channel of the heat exchanger 100 and causing blockage of the second channel.

[0068] In some embodiments of this utility model, the liquid cooling device further includes a reinforcing rib 830. The reinforcing rib 830 connects the first support plate 810 and the second support plate 820, and is located adjacent to the connection between the first support plate 810 and the second support plate 820.

[0069] like Figure 1 As shown, a reinforcing rib 830 is provided at the connection between the first support plate 810 and the second support plate 820, which can make the connection between the first support plate 810 and the second support plate 820 stable.

[0070] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A liquid cooling device for a frequency converter, characterized in that, The liquid cooling device includes: The mounting bracket includes a vertically arranged first support plate and a horizontally arranged second support plate connected to the bottom of the first support plate; A heat exchanger is mounted on the first support plate. The heat exchanger includes a first channel and a second channel capable of heat exchange. The liquid inlet of the first channel is connected to the liquid outlet of the frequency converter through a first pipe to receive the first coolant from the frequency converter. A water pump is mounted on the second support plate. The inlet of the water pump is connected to the outlet of the first channel of the heat exchanger through a second pipe, and is also connected to the inlet of the frequency converter through a third pipe. A first temperature sensor is disposed on the third pipe to detect the first temperature of the first coolant in the third pipe; An electric regulating valve is provided, the inlet of which is connected to the outlet of the second channel of the heat exchanger, and the outlet is connected to the inlet of the cooling tower via a fourth pipe. The cooling tower is capable of providing a second coolant with a predetermined temperature range and a predetermined pressure range. The flow rate of the second coolant in the second channel can be adjusted by the electric regulating valve. The fifth pipe has its inlet end connected to the outlet end of the cooling tower, and its outlet end connected to the inlet end of the second channel of the heat exchanger.

2. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A bladder-type pressure tank is connected to the first pipeline. An air bladder is provided inside the bladder-type pressure tank. When the pressure of the first coolant in the bladder-type pressure tank is greater than the pressure of the first coolant in the first pipeline, the air bladder can inflate, allowing the first coolant in the bladder-type pressure tank to flow into the first pipeline. When the pressure of the first coolant in the bladder-type pressure tank is less than the pressure of the first coolant in the first pipeline, the air bladder can contract, allowing the first coolant in the first pipeline to flow into the bladder-type pressure tank.

3. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A second temperature sensor is disposed on the fifth pipe to detect the second temperature of the second coolant inside the fifth pipe.

4. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A first pressure sensor is disposed on the third pipe to detect a first pressure of the first coolant in the third pipe; A second pressure sensor is disposed on the fifth pipe to detect the second pressure of the second coolant within the fifth pipe.

5. The liquid cooling equipment for frequency converters according to claim 4, characterized in that, The water pumps include two pumps, both of which have their inlet ends connected to the second pipe and both have their outlet ends connected to the third pipe. The frequency converter includes multiple frequency converters, each of which has its inlet end connected to the third pipe and its outlet end connected to the first pipe.

6. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A safety valve is provided on the third pipe to discharge the first coolant in the third pipe if the first pressure in the third pipe is greater than a predetermined high pressure.

7. The liquid cooling equipment for frequency converters according to claim 6, characterized in that, The liquid cooling device also includes: An exhaust valve is connected to the first pipe, which can discharge gas in the first pipe and prevent the discharge of the first coolant.

8. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A filter, connected to the fifth pipe, is provided to filter the second coolant within the fifth pipe.

9. The liquid cooling equipment for frequency converters according to claim 1, characterized in that, The liquid cooling device also includes: A reinforcing rib connects the first support plate and the second support plate, and is located near the connection point between the first support plate and the second support plate.

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