CDU system

Abstract

The invention discloses a CDU system, and relates to the technical field of temperature control equipment. The CDU system comprises a CDU main body and a control device, wherein the CDU main body comprises a main channel and an ion filtering branch which is connected to at least part of a pipeline of the main channel in parallel; a conductivity detector is arranged on the main channel, and an ion exchanger and a first flow regulating valve are arranged on the ion filtering branch; the conductivity detector and the first flow regulating valve are both in communication connection with the control device; the control device is used for receiving detection data of the conductivity detector and controlling the opening degree of the first flow adjusting valve. Based on the cooperation of the conductivity detector, the first flow regulating valve and the control device, the control device can adaptively regulate the opening degree of the first flow regulating valve according to the conductivity detected by the conductivity detector, and correspondingly regulate the flow of liquid passing through the ion exchanger so as to regulate the regulation efficiency of the conductivity; and the conductivity of the working medium solution in the system is reduced more efficiently.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature control equipment, and in particular to a CDU system. Background Art

[0002] In conventional liquid-cooled CDU (Coolant Distribution Unit) systems, only a conductivity meter is set up to detect the conductivity of the working fluid solution in the system. However, for the CDU system, when the staff finds that the test data does not meet the requirements, they will manually adjust the solution properties, which affects the efficiency of adjusting the solution properties.

[0003] Therefore, how to improve the regulation efficiency of conductivity is a technical problem that those skilled in the art currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a CDU system which can improve the efficiency of regulating conductivity.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A CDU system comprises a CDU body and a control device, wherein the CDU body comprises a main channel and an ion filtering branch connected in parallel to at least part of the pipeline of the main channel; a conductivity detector is arranged on the main channel, and an ion exchanger and a first flow regulating valve are arranged on the ion filtering branch;

[0007] The conductivity detector and the first flow regulating valve are both communicatively connected to the control device; the control device is used to receive detection data from the conductivity detector and to control the opening of the first flow regulating valve.

[0008] Preferably, a first control valve is further provided on the ion filtering branch to control the on-off of the ion filtering branch.

[0009] Preferably, a heat exchange device is also included, and the main channel includes a return liquid channel connected to the inlet of the heat exchange device and a supply liquid channel connected to the outlet of the heat exchange device; the inlet of the ion filtration branch is connected to the supply liquid channel, and the outlet is connected to the return liquid channel.

[0010] Preferably, the conductivity detector is arranged on the liquid return channel and is located between the inlet of the liquid return channel and the outlet of the ion filtration branch.

[0011] Preferably, a heat exchange device is further included, wherein the main channel includes a liquid return channel connected to the inlet of the heat exchange device and a liquid supply channel connected to the outlet of the heat exchange device;

[0012] The CDU body further comprises a temperature regulating branch, the inlet of the temperature regulating branch is connected to the liquid supply channel, and the outlet is connected to the liquid return channel; a second flow regulating valve is arranged on the temperature regulating branch to regulate the flow of the temperature regulating branch.

[0013] Preferably, a liquid return temperature sensor is provided on the liquid return channel, and the liquid return temperature sensor and the second flow regulating valve are communicatively connected to the control device; the control device is used to receive detection data of the liquid return temperature sensor and to control the opening of the second flow regulating valve.

[0014] Preferably, a circulating water pump is provided on the liquid return channel, and the circulating water pump is communicatively connected to the control device, and the control device is used to control the frequency of the circulating water pump.

[0015] Preferably, a heat exchange device is further included, the heat exchange device includes a dry cooler and a cooling fan arranged on the heat dissipation side of the dry cooler, and the main channel includes a liquid return channel connected to the inlet of the dry cooler and a liquid supply channel connected to the outlet of the dry cooler;

[0016] A liquid supply temperature sensor is arranged on the liquid supply channel, and the air cooler and the liquid supply temperature sensor are communicatively connected to the control device, and the control device is used to receive detection data of the liquid supply temperature sensor and to adjust the frequency of the air cooler.

[0017] Preferably, the heat exchange device is integrally fixed to the CDU body.

[0018] Preferably, casters are arranged below the integrated structure formed by the heat exchange device and the CDU body.

[0019] The CDU system provided by the present invention comprises a CDU body and a control device, wherein the CDU body comprises a main channel and an ion filtering branch of at least part of the pipeline connected in parallel to the main channel; a conductivity detector is arranged on the main channel, and an ion exchanger and a first flow regulating valve are arranged on the ion filtering branch; the conductivity detector and the first flow regulating valve are both communicatively connected to the control device; the control device is used to receive detection data of the conductivity detector, and is used to control the opening of the first flow regulating valve.

[0020] Based on the cooperation of the conductivity detector, the first flow regulating valve and the control device, the control device can receive the detection data of the conductivity detector and control the opening degree of the first flow regulating valve. After the ion filtration branch is connected to the main channel, the ion exchanger adjusts the anions and cations of the liquid flowing from the main channel into the ion filtration branch. The control device can adaptively adjust the opening degree of the first flow regulating valve according to the conductivity detected by the conductivity detector, thereby correspondingly adjusting the liquid flow rate passing through the ion exchanger to adjust the regulation efficiency of the conductivity, so as to more efficiently reduce the conductivity of the working medium solution in the system, improve the degree of automation of the regulation, and solve the problem that the breakdown of electrical components may be caused by the increase in the conductivity of the working medium solution during operation. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0022] Figure 1 It is the pipeline connection diagram of the first specific embodiment of the CDU system provided by the present invention;

[0023] Figure 2 It is the external view of the first specific embodiment of the CDU system provided by the present invention.

[0024] Reference Signs:

[0025] Liquid return pressure sensor 1, liquid return temperature sensor 2, conductivity detector 3, PH detector 4, first drain valve 5, liquid replenishment tank 6, liquid replenishment pump 7, first check valve 8, first filter 9, first butterfly valve 10, expansion tank 11, water pump inlet pressure sensor 12, second butterfly valve 13, third butterfly valve 14, first circulating water pump 15, second circulating water pump 16, second check valve 17, third check valve 18, fourth butterfly valve 19, fifth butterfly valve 20, water pump outlet pressure sensor 21, safety valve 22, first automatic exhaust valve 23, dry cooler 24, air cooler 25, second automatic exhaust valve 26, second drain valve 27, first flow regulating valve 28, ion exchanger 29, sixth butterfly valve 30, second flow regulating valve 31, seventh butterfly valve 32, filter inlet pressure sensor 33, second filter 34, eighth butterfly valve 35, ninth butterfly valve 36, flow meter 37, liquid supply pressure sensor 38, liquid supply temperature sensor 39, system liquid supply chuck interface 40, system return liquid chuck interface 41, temperature and humidity sensor 42, heat exchanger automatic exhaust valve protective cover 43, PH value display 44, conductivity value display 45, casters 46, return liquid channel 47, liquid supply channel 48, ion filtration branch 49, temperature adjustment branch 50. DETAILED DESCRIPTION

[0026] 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.

[0027] The core of the present invention is to provide a CDU system which can improve the efficiency of regulating conductivity.

[0028] For a specific example of the CDU system provided by the present invention, please refer to Figure 1 and Figure 2 , including CDU main body and control device.

[0029] The CDU body includes a main channel and a heat exchange device. The main channel includes a return channel 47 connected to the inlet of the heat exchange device and a supply channel 48 connected to the outlet of the heat exchange device. The main channel is used for the flow of working fluid and heat exchange at the heat exchange device. The control device is specifically a host computer, which can be directly set on the CDU system or remotely controlled.

[0030] The heat exchange device includes an air cooler 25 and a dry cooler 24 , and the air cooler 25 is disposed on the heat dissipation side of the dry cooler 24 .

[0031] The air cooler 25 can increase the speed and flow of air in the environment flowing through the dry cooler 24, promote the heat exchange intensity between the ambient temperature and the dry cooler 24, and play an enhanced heat exchange effect. The air cooler 25 adopts a variable frequency adjustable speed fan, so that the speed of the air cooler 25 can be adjusted according to the system liquid supply temperature, making full use of the natural cold source and achieving energy saving effect.

[0032] The outlet of the return liquid channel 47 is connected to the dry cooler 24, and the inlet of the supply liquid channel 48 is connected to the dry cooler 24. The dry cooler 24 can cool the high-temperature fluid working medium (coolant) return water entering the return liquid channel 47 through the liquid-cooled cold plate, and then provide low-temperature fluid working medium (coolant) water supply to the liquid-cooled cold plate through the supply liquid channel 48. In addition, a temperature and humidity sensor 42 is provided on the dry cooler 24. The temperature and humidity sensor 42 is specifically placed inside the CDU system by magnetic attraction, and outputs the temperature and humidity information of the environment in which the CDU system is located. The temperature and humidity sensor 42 is connected to the control device through a communication line.

[0033] like Figure 1 As shown, the CDU body also includes an ion filter branch 49 connected in parallel to at least part of the pipeline of the main channel. The conductivity detector 3 is arranged on the main channel, and the ion exchanger 29 and the first flow regulating valve 28 are arranged on the ion filter branch 49.

[0034] Among them, deionized water (pure water) - ethylene glycol / propylene glycol solution and other alcohol fluid solutions can be used as coolants in the CDU body to replace oil cooling media, which can be applied to high-voltage substation equipment heat dissipation scenarios.

[0035] The ion exchanger 29 includes an ion exchange resin system, which can replace various anions and cations in water through anion and cation exchange resins, so as to remove various anions and cations in water and reduce the conductivity of the working fluid solution in the system.

[0036] Among them, the conductivity detector 3 and the first flow regulating valve 28 are both communicatively connected to the control device; the control device is used to receive the detection data of the conductivity detector 3, and to control the opening of the first flow regulating valve 28. When in use, when the conductivity detector 3 detects that the conductivity of the working fluid in the coolant channel is too high, the detected data is uploaded to the control device, and the control device sends a command to the first flow regulating valve 28, and the first flow regulating valve 28 is opened and the flow is adjusted. At this time, the working fluid in the main channel flows into the ion exchanger 29, and the ion exchanger 29 adsorbs ions in the working fluid to make the conductivity in the main channel reach a normal value.

[0037] Based on the cooperation between the conductivity detector 3, the first flow regulating valve 28 and the control device, the control device can receive the detection data of the conductivity detector 3 and control the opening of the first flow regulating valve 28. After the ion filtration branch 49 is connected to the main channel, the ion exchanger 29 adjusts the anions and cations of the liquid entering the ion filtration branch 49 from the main channel. The control device can adaptively adjust the opening of the first flow regulating valve 28 according to the conductivity detected by the conductivity detector 3, and correspondingly adjust the liquid flow passing through the ion exchanger 29 to adjust the regulation efficiency of the conductivity, thereby more efficiently reducing the conductivity of the working fluid solution in the system, improving the degree of automation of the regulation, and solving the problem that the increase in the conductivity of the working fluid solution during operation may cause the electrical components to be broken down and damaged.

[0038] When performing conductivity control, the control device is used to adjust the first flow control valve 28 to a corresponding opening according to the preset conductivity range of the conductivity detected by the conductivity detector 3; wherein the preset conductivity range includes at least two continuous, non-overlapping value ranges, and each preset conductivity range corresponds to an opening of the first flow control valve 28.

[0039] Please refer to the following table, the control device can control the first flow regulating valve 28 according to the following table:

[0040]

[0041] Based on the above limitations, when the conductivity detector 3 detects that the conductivity of the working fluid solution is higher or lower than the corresponding limit value, the control device can automatically adjust the opening of the first flow control valve 28 and automatically adjust the conductivity of the working fluid solution accordingly to ensure safe and reliable operation of the system.

[0042] Among them, a first control valve is also provided on the ion filtering branch 49 to control the on-off of the ion filtering branch 49, which can be specifically the sixth butterfly valve 30. By adding the first control valve, it is possible to control whether the ion filtering branch 49 and the ion exchanger 29 are connected to the main channel, which is convenient for the maintenance and replacement of the ion exchanger 29. Of course, in other embodiments, the on-off of the ion filtering branch 49 can also be directly controlled by the first flow regulating valve 28. In addition, the first control valve can also be a manual valve or an electric valve connected to the control device by communication.

[0043] Among them, the inlet of the ion filtration branch 49 is connected to the liquid supply channel 48, and the outlet is connected to the liquid return channel 47. That is to say, the liquid entering the ion filtration branch 49 is the liquid cooled by the heat exchange device, and the cooled liquid flows back to the liquid return channel 47 through the ion filtration branch 49, and the temperature can be adjusted while adjusting the conductivity. Of course, in other embodiments, the ion filtration branch 49 can also be connected in parallel to part of the pipeline of the liquid return channel 47 or part of the pipeline of the liquid supply channel 48.

[0044] The conductivity detector 3 is arranged on the liquid return channel 47 and is located between the inlet of the liquid return channel 47 and the outlet of the ion filtering branch 49, so as to judge the conductivity of the liquid entering the main channel more timely.

[0045] like Figure 1 As shown, the CDU body further includes a temperature regulating branch 50, the inlet of which is connected to the liquid supply channel 48, and the outlet of which is connected to the liquid return channel 47. A second flow regulating valve 31 is provided on the temperature regulating branch 50 to regulate the flow of the temperature regulating branch 50.

[0046] The return liquid temperature sensor 2 is provided on the return liquid channel 47 , and the return liquid temperature sensor 2 and the second flow regulating valve 31 are communicatively connected to the control device. The control device is used to receive the detection data of the return liquid temperature sensor 2 and to control the opening of the second flow regulating valve 31 .

[0047] The first flow regulating valve 28 and the second flow regulating valve 31 may be electric valves, such as electric two-way valves.

[0048] When the load in the system is reduced to a certain level and the air cooler 25 is already running at the lower speed limit, the control device can automatically adjust the opening of the second flow control valve 31 according to the temperature setting to meet the system liquid supply temperature requirement, thereby not causing a lower liquid supply temperature and causing the system to run in condensation.

[0049] Of course, in other embodiments, the second flow regulating valve 31 may also be a manual valve, and the flow of the temperature regulating branch 50 is manually adjusted as needed.

[0050] like Figure 1 As shown, for the setting of the return liquid channel 47, a return liquid chuck interface is set at its inlet, and the return liquid channel 47 is connected in sequence to the return liquid pressure sensor 1, the return liquid temperature sensor 2, the conductivity detector 3, the PH detector 4, the first drain valve 5, the bypass pipe outlet, the liquid replenishment branch outlet, the expansion tank 11, the water pump inlet pressure sensor 12, the circulation pump branch, the water pump outlet pressure sensor 21, the safety valve 22, and then connected to the inlet of the dry cooler 24.

[0051] The bypass pipe is a channel formed by the temperature regulating branch 50 and the ion filtering branch 49 in parallel, and the bypass pipe outlet is the outlet of the temperature regulating branch 50 and the ion filtering branch 49 .

[0052] Among them, the rehydration branch includes an automatic rehydration system composed of a rehydration tank 6, a rehydration pump 7, a first one-way valve 8, a first filter 9, and a first butterfly valve 10. In addition, the top of the rehydration tank 6 is provided with a liquid filling port, a liquid level display is provided on the side, and a liquid level sensor is provided at the bottom, wherein the water outlet at the bottom of the rehydration tank 6 is connected to the rehydration pump 7. In the control device, the rehydration branch can be automatically rehydrated according to the setting. For example, the logic of automatic rehydration is: when the water pump inlet pressure < the water replenishment pressure setting value, the default value is 0.3 bar (settable), the rehydration pump 7 is turned on; when the water pump inlet pressure ≥ the water replenishment pressure setting value, the default value is 0.3 bar (settable) + the hysteresis default is 0.4 bar (settable), the rehydration pump 7 is turned off.

[0053] Among them, the function of the expansion tank 11 is: as the pressure of the balanced closed system changes continuously, when the pressure of the solution in the system decreases, the gas pressure in the expansion tank 11 is greater than the pressure of the solution. At this time, the gas expands and squeezes the water in the airbag out to replenish the system until the pressure is balanced. When the pressure of the solution in the system increases due to heat expansion and exceeds the gas pressure in the expansion tank 11, the gas is compressed and the solution in the system will flow into the airbag of the expansion tank 11 until the pressure is balanced. Another function is that the expansion tank 11 is generally placed on the inlet side of the circulating water pump to prevent the circulating water pump from cavitation due to low system pressure.

[0054] Among them, the circulating pump branch includes a first pump body channel and a second pump body channel in parallel. On the first pump body channel, the inlet of the first circulating water pump 15 is connected to the second butterfly valve 13, and the outlet of the first circulating water pump 15 is connected to the second one-way valve 17 and the fourth butterfly valve 19 respectively; on the second pump body channel, the inlet of the second circulating water pump 16 is connected to the third butterfly valve 14, and the outlet of the first circulating water pump 15 is connected to the third one-way valve 18 and the fifth butterfly valve 20 respectively.

[0055] Among them, the functions of the first circulating water pump 15 and the second circulating water pump 16 are to provide circulating power for the flow of the system working fluid and overcome the system resistance. The first circulating water pump 15 and the second circulating water pump 16 are both horizontal centrifugal variable frequency water pumps. They have redundant backups and regular alternating operation to extend the service life of the water pumps while supporting online replacement and maintenance. The first circulating water pump 15 and the second circulating water pump 16 support variable frequency regulation, which can meet the requirements of variable load conditions, adjust the operating frequency of the water pump according to system pressure difference, temperature difference, flow rate and other parameters, and meet various control requirements.

[0056] The function of the safety valve 22 is to release the working fluid to the outside of the system to prevent the system pressure from exceeding the safe operating pressure value of the system, thereby protecting the components in the system, when the pressure of the working fluid in the system exceeds the pressure relief value of the safety valve 22 .

[0057] like Figure 1As shown, with respect to the setting of the liquid supply channel 48, its inlet is connected to the outlet of the dry cooler 24, and the liquid supply channel 48 is sequentially connected to the second liquid discharge valve 27, the bypass pipe inlet, the filter branch, the flow meter 37, the liquid supply pressure sensor 38, and the liquid supply temperature sensor 39, and the outlet of the liquid supply channel 48 is connected to the system liquid supply chuck interface 40.

[0058] The first liquid discharge valve 5 and the second liquid discharge valve 27 are arranged at the lowest pipeline inside the system.

[0059] Among them, on the filter branch, the seventh butterfly valve 32 is connected to the filter inlet pressure sensor 33, the second filter 34, and the eighth butterfly valve 35; the ninth butterfly valve 36 is connected to the inlet of the seventh butterfly valve 32 and the outlet of the eighth butterfly valve 35. The second filter 34 can filter out impurities in the system to ensure the cleanliness of the system circulating water.

[0060] Among them, since the second filter 34 is connected with pressure sensors (filter inlet pressure sensor 33, liquid supply pressure sensor 38) before and after, they are used to detect the inlet and outlet pressures of the filter. By calculating the difference and the set value, it is determined whether the filter is dirty and blocked. When the filter is dirty and blocked, the ninth butterfly valve 36 can be manually opened, and the seventh butterfly valve 32 and the eighth butterfly valve 35 can be closed. After the filter is replaced online without stopping the machine, the seventh butterfly valve 32 and the eighth butterfly valve 35 can be manually opened, and the ninth butterfly valve 36 can be closed, thereby realizing online maintenance of the filter.

[0061] Among them, based on the liquid supply temperature sensor 39 set on the liquid supply channel 48, the air cooler 25 and the liquid supply temperature sensor 39 are communicatively connected to the control device, and the control device is used to receive the detection data of the liquid supply temperature sensor 39 and to adjust the frequency of the air cooler 25 to adjust the frequency of the air cooler 25 according to the liquid supply temperature.

[0062] Among them, the flow meter 37 can monitor the system flow, visually detect the stability of the system operation, and provide a flow control method for the system control method.

[0063] It should be noted that, in the present invention, any two interconnected components are connected via a hollow connecting pipe.

[0064] In the CDU system of this embodiment, during normal operation, the first drain valve 5, the second drain valve 27, and the ninth butterfly valve 36 are all in the closed state. The system liquid supply chuck interface 40 and the system liquid return chuck interface 41 are the connection ports of this CDU system to the liquid cooling cold plate pipeline that absorbs the heat of the heating unit, and adopt chuck - clamp quick connection. The heat of the heating unit is conducted to the low - temperature fluid refrigerant (cooling agent) in the pipeline through the liquid cooling cold plate. After the low - temperature fluid refrigerant (cooling agent) flows through the liquid cooling cold plate carrying the heat of the heat dissipation unit, it is heated and becomes a high - temperature fluid refrigerant (cooling agent). The high - temperature fluid refrigerant (cooling agent) enters the CDU system through the system liquid return chuck interface 41. After heat exchange with outdoor air in the dry cooler 24, the high - temperature fluid refrigerant (cooling agent) is cooled to a low - temperature fluid refrigerant (cooling agent). The low - temperature fluid refrigerant (cooling agent) continues to provide low - temperature fluid refrigerant (cooling agent) for the liquid cooling cold plate through the power provided by the first circulation water pump 15 or the second circulation water pump 16. In this way, a closed - loop system is formed by circulation.

[0065] In addition, the control device can be divided into automatic control and manual control. Automatic control: The data detected by all data detection devices such as temperature sensors, pressure sensors, temperature - humidity sensors 42, pH detectors 4, conductivity detectors 3, etc. will be uploaded to the control device. According to the set system software control logic and parameters, functions such as warning and alarm can be realized for data beyond the set range. At the same time, the operating states of variable - frequency water pumps and variable - frequency fans can be automatically controlled; the opening ratio of the electric two - way valve can be automatically regulated to adjust the system flow rate and control the conductivity value in the system. For manual control, instructions can be manually sent to each device through the control device to adjust the operating states of each device.

[0066] Among them, the automatic control logic:

[0067] Cooling fan 25: Its rotation speed is automatically adjusted according to the liquid supply temperature detected by the liquid supply temperature sensor 39;

[0068] Circulation water pump (the first circulation water pump 15, the second circulation water pump 16): The control of the water pump rotation speed is based on the control of the liquid supply - return pressure difference, flow control, and liquid supply - return temperature difference control. These three modes can be selected according to control needs. When the collected values participating in the control fail, the control method automatically switches to the method with normal collected values. At the same time, the running time is set to realize the automatic rotation operation of the water pumps. Specifically, the circulation water pumps are communicatively connected to the control device, and the control device is used to control the frequency of the circulation water pumps.

[0069] The first flow regulating valve 28: Control of the opening degree, which is controlled according to the value detected by the conductivity detector 3;

[0070] The second flow regulating valve 31: The control of the opening degree and the rotation speed of the circulation water pump share the same PID demand control, and are adjusted in segments according to the PID demand;

[0071] Automatic refilling logic: When the water pump inlet pressure is less than the water replenishing pressure setting value, the default value is 0.3 bar (settable), the refilling pump 7 is turned on; when the water pump inlet pressure is greater than or equal to the water replenishing pressure setting value, the default value is 0.3 bar (settable) + the hysteresis is 0.4 bar (settable), the refilling pump 7 is turned off.

[0072] like Figure 2 As shown, the heat exchange device is integrally fixed to the CDU body, and casters 46 are provided below the integral structure formed by the heat exchange device and the CDU body.

[0073] Among them, in the heat exchange device, the dry cooler 24 is composed of two heat exchangers arranged in a "V" shape and connected to each other, and the first automatic exhaust valve 23 and the second automatic exhaust valve 26 in the dry cooler 24 are respectively installed on the top of the two "V"-shaped heat exchangers.

[0074] Based on the assembly method of the heat exchange device and the CDU body, the CDU system in this embodiment can be regarded as an integrated intelligent system that integrates the dry cooler and the air-liquid-liquid cooling cabinet CDU system. All pipelines and equipment devices are integrated inside the CDU system in this embodiment to form a finished device, which can reduce a large number of intermediate connecting pipelines, reduce system costs, reduce the risk of system leakage, and also greatly save the space occupied by the equipment. At the same time, the CDU system in this embodiment adds a caster 46 design on the basis of conventional installation and fixing requirements, which can improve the convenience of the system equipment and can be moved according to the use requirements, solving the problem that once the conventional liquid-cooled cabinet CDU system is installed, it is difficult to move again. It is very friendly to small space usage scenarios such as laboratories, and can meet the new requirements for convenience, reliability, and small space occupation for liquid cooling systems in application scenarios such as laboratories, energy storage, and high-voltage transformers.

[0075] The CDU system in this embodiment has the following advantages: it can automatically adjust the properties of the working fluid solution and other requirements, can be applied to the field of heat dissipation technology of high-voltage transformers (10KV), saves space, is easy to move, and ensures that the CDU system has the advantages of high efficiency, stable performance, safety and reliability, and easy maintenance.

[0076] It should be noted that when an element is referred to as "fixed" to another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element in the middle. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", "multiple groups" mean two or more.

[0077] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0079] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] The CDU system provided by the present invention is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A CDU system, It is characterized in that The invention comprises a CDU body and a control device, wherein the CDU body comprises a main channel and an ion filtering branch (49) connected in parallel to at least part of the pipeline of the main channel; an electrical conductivity detector (3) is arranged on the main channel, and an ion exchanger (29) and a first flow regulating valve (28) are arranged on the ion filtering branch (49); The conductivity detector (3) and the first flow regulating valve (28) are both communicatively connected to the control device; the control device is used to receive detection data from the conductivity detector (3) and to control the opening of the first flow regulating valve (28).

2. The CDU system according to claim 1, It is characterized in that A first control valve is also provided on the ion filtering branch (49) to control the on and off of the ion filtering branch (49).

3. The CDU system according to claim 1, It is characterized in that It also includes a heat exchange device, wherein the main channel includes a liquid return channel (47) connected to the inlet of the heat exchange device and a liquid supply channel (48) connected to the outlet of the heat exchange device; the inlet of the ion filtering branch (49) is connected to the liquid supply channel (48), and the outlet is connected to the liquid return channel (47).

4. The CDU system according to claim 3, It is characterized in that The conductivity detector (3) is arranged on the liquid return channel (47) and is located between the inlet of the liquid return channel (47) and the outlet of the ion filtering branch (49).

5. The CDU system according to claim 1, It is characterized in that It also includes a heat exchange device, wherein the main channel includes a liquid return channel (47) connected to the inlet of the heat exchange device and a liquid supply channel (48) connected to the outlet of the heat exchange device; The CDU body further comprises a temperature regulating branch (50), the inlet of the temperature regulating branch (50) being connected to the liquid supply channel (48), and the outlet of the temperature regulating branch (50) being connected to the liquid return channel (47); a second flow regulating valve (31) is arranged on the temperature regulating branch (50) to regulate the flow of the temperature regulating branch (50).

6. The CDU system according to claim 5, It is characterized in that A liquid return temperature sensor (2) is provided on the liquid return channel (47); the liquid return temperature sensor (2) and the second flow regulating valve (31) are communicatively connected to the control device; the control device is used to receive detection data of the liquid return temperature sensor (2) and to control the opening degree of the second flow regulating valve (31).

7. The CDU system according to claim 5, It is characterized in that A circulating water pump is arranged on the liquid return channel (47), and the circulating water pump is communicatively connected to the control device, and the control device is used to control the frequency of the circulating water pump.

8. The CDU system according to claim 1, It is characterized in that The invention also comprises a heat exchange device, the heat exchange device comprising a dry cooler (24) and a cooling fan (25) arranged on the heat dissipation side of the dry cooler (24), the main channel comprising a liquid return channel (47) connected to the inlet of the dry cooler (24) and a liquid supply channel (48) connected to the outlet of the dry cooler (24); A liquid supply temperature sensor (39) is provided on the liquid supply channel (48); the air cooler (25) and the liquid supply temperature sensor (39) are communicatively connected to the control device; the control device is used to receive detection data of the liquid supply temperature sensor (39) and to adjust the frequency of the air cooler (25).

9. The CDU system according to claim 8, It is characterized in that The heat exchange device is integrally fixed to the CDU body.

10. The CDU system according to claim 9, It is characterized in that Casters (46) are arranged below the integrated structure formed by the heat exchange device and the CDU body.

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