CN207675031U - A kind of liquid cooling Distributed Control System - Google Patents

Abstract

The utility model relates to a liquid-cooled collection and distribution control system. The system includes a cold source, a liquid-liquid heat exchanger, and one or more server cabinets. The cold source and the liquid-liquid heat exchanger pass through a primary water supply pipe and a primary return The liquid-liquid heat exchanger is connected to the server cabinet through the secondary water supply pipe and the secondary water return pipe. The liquid-cooled distributed control system also includes a cold source control system for regulating the cooling efficiency of the cold source, and a cold source control system for regulating the liquid cooling efficiency. ‑Heat exchange control system for heat exchange efficiency of liquid heat exchanger, centralized monitoring system for centralized control of cold source control system and heat exchange control system. The utility model can not only realize point-to-point control in the liquid cooling system, but also realize multi-point centralized control, reduce on-site wiring, and improve the monitoring quality of the liquid cooling system.

Description

A liquid-cooled distributed control system

technical field

The utility model relates to the technical field of heat exchange unit control, in particular to a liquid-cooled distributed control system.

Background technique

According to statistics, my country's data center energy consumption accounted for about 1.8% of the country's total energy consumption in 2015, which is equivalent to the annual power generation of the Three Gorges Hydropower Station of about 100 billion kWh. In the data center, a large amount of energy is wasted by the cooling system, accounting for as much as 40% to 50%, and the PUE value is generally higher than 2.2, which seriously restricts the green and sustainable development of IDC. urgent needs of the platoon. The electrical control system is one of the important key points.

Liquid cooling technology, which belongs to natural cooling technology, is one of the effective ways to reduce the energy consumption of data center computer room. The liquid cooling technology refrigeration system is mainly composed of a cold source module unit, a heat exchange module unit, and a two-stage water circulation pipeline. Cooling water-cooled energy-saving heat dissipation system. The use of electrical control systems in existing liquid-cooled refrigeration systems can effectively ensure the stability, high efficiency, and energy-saving performance of liquid-cooled refrigeration systems. Can realize point-to-point control and other shortcomings.

Utility model content

In order to overcome at least one defect (deficiency) of the above-mentioned prior art, the utility model provides a liquid-cooled distributed control system, which can not only realize point-to-point control in the liquid cooling system, but also realize multi-point centralized control.

In order to realize the purpose of this utility model, adopt following technical scheme to realize:

A liquid-cooled distributed control system, including a cold source, a liquid-liquid heat exchanger, and one or more server cabinets, the cold source and the liquid-liquid heat exchanger are connected through a primary water supply pipe and a primary return water pipe, and the liquid-liquid The heat exchanger is connected to the server cabinet through a secondary water supply pipe and a secondary water return pipe, and the liquid-cooled distributed control system also includes a centralized monitoring system, a cold source control system, and a heat exchange control system;

The centralized monitoring system is electrically connected to the cold source control system and the heat exchange control system respectively, and is used for centralized control of the cold source control system and the heat exchange control system;

Cold source control system, used to control the cooling efficiency of the cold source;

The heat exchange regulating system is used for regulating the heat exchange efficiency of the liquid-liquid heat exchanger.

Since the refrigeration efficiency of the cold source and the heat exchange efficiency of the liquid-liquid heat exchanger are independently controlled by different control systems, point-to-point control can be realized. And because the centralized monitoring system can centrally control the cold source control system and the heat exchange control system, it can realize multi-point centralized control.

In the whole liquid cooling system, the cooling efficiency of the cold source can be controlled alone, or the heat exchange efficiency of the liquid-liquid heat exchanger can be controlled alone, or combined with the cooling efficiency of the cold source and the heat exchange efficiency of the liquid-liquid heat exchanger. Cooperate with control to meet the heat dissipation requirements of server cabinets at different times and locations, so as to achieve energy-saving, high-efficiency, and stable effects.

Preferably, the primary water supply pipe, the primary water return pipe, the secondary water supply pipe, and the secondary water return pipe can be provided with valves to facilitate on-off control of the pipelines.

Further, the centralized monitoring system includes a communication device, a human-machine interface, and a dynamic-environment monitoring device. The cold source control system and the heat exchange control system are connected to the communication device, the communication device is connected to the dynamic-environment monitoring device, and the human-machine interface is connected to the dynamic environment monitoring device. Communication device and/or dynamic environment monitoring device connection.

The real-time parameters of the cold source control system, the heat exchange control system and the control parameters of the dynamic environment monitoring device can be transmitted to the man-machine interface through the communication device, and the dynamic environment monitoring device can also transmit control commands to the cold source control system, Heat exchange control system. Monitoring personnel can see the real-time working status of the cold source and liquid-liquid heat exchanger and the control parameters of the dynamic ring monitoring device through the man-machine interface, and can also send control commands to the cold source control system and heat exchange control through the dynamic ring monitoring device system, the cold source control system and the heat exchange control system then regulate the cooling efficiency of the cold source and the heat exchange efficiency of the liquid-liquid heat exchanger according to the received control commands, the control parameters and the updated real-time parameters after control can be fed back Go to the man-machine interface, so that the monitoring personnel can see the updated working status of the cold source and liquid-liquid heat exchanger through the man-machine interface.

Further, the liquid-cooled distributed control system also includes one or more terminal detection systems, the server cabinet is provided with a water inlet and a water outlet, and the terminal detection system is connected to a communication device for detecting the water inlet or water outlet One or more of temperature, flow, and pressure.

The terminal detection system can detect various parameters of the refrigerant water flowing through the water inlet and outlet of the server cabinet, such as temperature, flow, pressure, etc., and transmit these parameters to the man-machine interface through the communication device, allowing the monitoring personnel to monitor in real time Heat dissipation of the server cabinet.

A data center computer room often houses multiple server cabinets. One end detection system can correspond to the water inlet and outlet of one or more server cabinets. The parameter transmission of multiple end detection systems requires a large number of on-site wiring. The parameters of each terminal detection system are uniformly transmitted to the man-machine interface through the communication device, which can not only ensure the reliability of all parameters and the timeliness of transmission, but also reduce the difficulty of field wiring in the computer room, greatly improving Supervisors monitor the quality of the entire liquid cooling system.

Further, the cooling source regulating system includes a cooling fan connected in sequence, a first frequency converter, and a cooling source controller, the cooling fan is used to assist cooling of the cooling source, and the cooling source controller is connected to the communication device.

Monitoring personnel can send control commands to the cold source controller through the dynamic ring monitoring device, and the cold source controller changes the output frequency of the first inverter according to the received control commands, and the speed of the cooling fan will also change accordingly , thereby changing the cooling efficiency of the cold source. When the speed of the cooling fan decreases, the auxiliary cooling efficiency for the cold source decreases; when the cooling fan speed increases, the auxiliary cooling efficiency for the cold source increases.

The output frequency of the first frequency converter is sent to the cold source controller, and the cold source controller sends the output frequency of the first frequency converter to the man-machine interface through the communication device. The monitoring personnel can see the current output frequency of the first frequency converter through the man-machine interface, that is, they can know the current rotating speed of the cooling fan. When the cooling efficiency of the cold source does not meet the requirements, the monitoring personnel can send control commands to control the speed of the cooling fan through the dynamic ring monitoring device, and feed back the control parameters of the cooling fan to the man-machine interface.

Further, the heat exchange control system includes a heat exchange controller, a second frequency converter, and a primary water pump that are electrically connected in sequence, and the primary water pump is arranged on the primary water supply pipe or the primary return water pipe, and the heat exchange controller is connected to the communication device .

The monitoring personnel can send the control command of the liquid-liquid heat exchanger to the heat exchange controller through the dynamic ring monitoring device, and the heat exchange controller changes the output frequency of the second frequency converter and the speed of the primary water pump according to the received control command. It will also change accordingly, thereby changing the flow rate of the cooling water produced by the cold source through the liquid-liquid heat exchanger, that is, changing the heat exchange efficiency of the liquid-liquid heat exchanger. When the speed of the primary water pump decreases, the cooling water flow on the primary water supply pipe and the primary return pipe will decrease, resulting in a decrease in the heat exchange efficiency of the liquid-liquid heat exchanger; when the speed of the primary water pump increases, the primary water supply pipe and the The flow of cooling water in the primary return pipe will increase, leading to an increase in the heat transfer efficiency of the liquid-liquid heat exchanger.

The output frequency of the second frequency converter will be transmitted to the heat exchange controller, and the heat exchange controller will send the output frequency of the second frequency converter to the man-machine interface through the communication device. The monitoring personnel can see the current output frequency of the second frequency converter through the man-machine interface, that is, they can know the current rotational speed of the primary water pump. When the heat exchange efficiency does not meet the requirements, the monitoring personnel can send control commands to control the speed of the primary water pump through the dynamic ring monitoring device, and feed back the control parameters of the primary water pump to the man-machine interface.

Further, the heat exchange control system also includes a third frequency converter, a secondary water pump, the heat exchange controller, the third frequency converter, and the secondary water pump are electrically connected in sequence, and the secondary water pump is arranged on the secondary water supply pipe or the secondary water return pipe. superior.

The monitoring personnel can also send the control command to the liquid-liquid heat exchanger to the heat exchange controller through the dynamic ring monitoring device, and the heat exchange controller changes the output frequency of the third frequency converter according to the received control command, and the secondary water pump The rotation speed of the cooling system will also change accordingly, thereby changing the flow of refrigerant water flowing to and from the server cabinet, that is, changing the heat exchange efficiency of the liquid-liquid heat exchanger. When the speed of the secondary water pump decreases, the flow of refrigerant water on the secondary water supply pipe and the secondary return pipe will decrease, resulting in a decrease in the heat exchange efficiency of the liquid-liquid heat exchanger; when the speed of the secondary water pump increases, the The cold coal water flow of the secondary water supply pipe and the secondary return water pipe will increase, resulting in an increase in the heat transfer efficiency of the liquid-liquid heat exchanger.

The output frequency of the third frequency converter is also transmitted to the heat exchange controller, and the heat exchange controller sends the output frequency of the third frequency converter to the man-machine interface through the communication device. The monitoring personnel can see the current output frequency of the third frequency converter through the man-machine interface, that is, they can know the current speed of the secondary water pump. When the heat exchange efficiency does not meet the requirements, the monitoring personnel can send control commands to control the speed of the secondary water pump through the dynamic ring monitoring device, and feed back the control parameters of the secondary water pump to the man-machine interface.

When the heat exchange efficiency does not meet the requirements, the monitoring personnel can also send control commands through the dynamic ring monitoring device, and at the same time adjust the speed of the primary water pump and the secondary water pump, so that the primary water pump and the secondary water pump can cooperate with each other to control the liquid-liquid heat exchanger. The heat exchange efficiency, and the control parameters of the primary water pump and the secondary water pump are fed back to the man-machine interface.

Further, the heat exchange control system also includes a bypass connecting the primary water supply pipe and the primary return water pipe, and an electric three-way valve, the electric three-way valve is electrically connected to the heat exchange controller, and the electric three-way valve includes port a, port b , Port c, port a communicates with the bypass, port b communicates with the liquid-liquid heat exchanger, and port c communicates with the primary water supply pipe or the primary return water pipe.

The monitoring personnel can also send the control command of the liquid-liquid heat exchanger to the heat exchange controller through the dynamic ring monitoring device. The heat exchange controller adjusts the opening and closing or opening and closing of each port of the electric three-way valve according to the received control command. To make part of the cooling water in the primary water supply pipe flow to the liquid-liquid heat exchanger, and the other part directly flow to the primary return pipe, so as to adjust the cooling water flow through the liquid-liquid heat exchanger and the cooling water flow through the bypass. When the flow through the liquid-liquid heat exchanger decreases, the heat exchange efficiency of the liquid-liquid heat exchanger will decrease; when the flow through the liquid-liquid heat exchanger increases, the heat exchange efficiency of the liquid-liquid heat exchanger Efficiency will increase.

The current opening and closing state and opening degree of each port of the electric three-way valve will be transmitted to the heat exchange controller, and the heat exchange controller will send the opening and closing state and opening degree to the man-machine interface through the communication device. The monitoring personnel can see the current opening and closing status and opening degree of each port of the electric three-way valve through the man-machine interface, that is, they can know the current flow of cooling water flowing through the liquid-liquid heat exchanger and the bypass. When the heat transfer efficiency of the liquid-liquid heat exchanger does not meet the requirements, the monitoring personnel can send control commands to control the electric three-way valve through the dynamic ring monitoring device, so as to control the flow of the coolant flowing through the liquid-liquid heat exchanger, and The control parameters of the electric three-way valve are fed back to the man-machine interface.

Further, the cold source control system also includes a cold source water supply temperature sensor and/or a cold source return water temperature sensor, and the cold source water supply temperature sensor is arranged on the primary water supply pipe for detecting the cold source water supply temperature T1 and sending T1 to To the cold source controller, the cold source return water temperature sensor is set on the primary return water pipe to detect the cold source return water temperature T2 and send T2 to the cold source controller.

The cold source water supply temperature T1 and the cold source return water temperature T2 detected by the cold source water supply temperature sensor and the cold source return water temperature sensor will be sent to the cold source controller, and the cold source controller will send T1 and T2 to the In the man-machine interface, the monitoring personnel can see the current size of T1 and T2 through the man-machine interface, and according to the size and change of T1 and T2, know whether the cooling efficiency of the current cold source does not meet the requirements. If the requirements are not met, the control command needs to be sent to the cold source controller through the dynamic environment monitoring device, and the control parameters are fed back to the man-machine interface.

Further, the heat exchange control system also includes a secondary water supply temperature sensor, a secondary water supply pressure sensor, and a secondary return water pressure sensor. The secondary water supply temperature sensor and the secondary water supply pressure sensor are arranged on the secondary water supply pipe. The water pressure sensor is set on the secondary return pipe, the secondary water supply temperature sensor is used to detect the secondary water supply temperature T3 and send T3 to the heat exchange controller, the secondary water supply pressure sensor is used to detect the secondary water supply pressure P1 and send P1 To the heat exchange controller, the secondary return water pressure sensor is used to detect the secondary return water pressure P2 and send P2 to the heat exchange controller.

The secondary water supply temperature T3 detected by the secondary water supply temperature sensor will be sent to the heat exchange controller, and the heat exchange controller will send T3 to the man-machine interface through the communication device. The monitoring personnel can see the current T3 through the man-machine interface. According to the size of T3, it is known whether the heat exchange efficiency of the current liquid-liquid heat exchanger meets the heat dissipation requirements of the server cabinet. If the requirements are not met, the control command needs to be sent to the heat exchange controller through the dynamic ring monitoring device, and the control parameters are fed back to the man-machine interface.

The secondary water supply pressure P1 and the secondary return water pressure P2 detected by the secondary water supply pressure sensor and the secondary return water pressure sensor respectively will be sent to the heat exchange controller, and the heat exchange controller will send P1 and P2 to the human through the communication device. In the machine interface, the monitoring personnel can see the current pressure difference △P = P1 - P2 of the secondary supply and return water through the man-machine interface, and according to the size and change of the pressure difference △P, the control command is sent to the changer through the dynamic ring monitoring device. The thermal controller keeps the pressure difference △P constant and feeds back the control parameters to the man-machine interface.

Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

(1) The cold source control system, heat exchange control system, and terminal detection system of the utility model can independently control the heat dissipation of the cold source, liquid-liquid heat exchanger, and server cabinet, and the centralized monitoring system can control the heat dissipation of the cold source The control system, heat exchange control system, and terminal detection system realize centralized control and improve the control quality of the entire liquid cooling system;

(2) The cold source control system and heat exchange control system set in the utility model can collect parameters such as the cold source water supply temperature, the cold source return water temperature, the secondary water supply temperature, the secondary water supply pressure, and the secondary return water pressure, etc. And uniformly transmitted to the centralized monitoring system, it can make the wiring layout simple, make the signal wiring distance shorter, effectively increase the timeliness of equipment control or sensor detection, and avoid the interference and failure of control signals and detection signals due to long-distance transmission. risk;

(3) The terminal detection system provided by the utility model, one terminal detection system corresponds to one or more server cabinets, and uniformly transmits the detected parameters such as temperature, flow rate and pressure to the centralized monitoring system, which can be used in more servers In the case of a cabinet, the on-site wiring is effectively reduced, and the reliability and timeliness of monitoring personnel to obtain various parameters are guaranteed.

Description of drawings

Fig. 1 is the schematic diagram of the utility model embodiment.

Description: 1. Cold source; 2. Liquid-liquid heat exchanger; 3. Server cabinet; 5. Centralized monitoring system; 6. Cold source control system; 7. Heat exchange control system; 8. End detection system; 41. Primary Water supply pipeline; 42. Primary water return pipeline; 43. Secondary water supply pipeline; 44. Secondary water return pipeline; 51. Communication device; 52. Man-machine interface; 53. Dynamic environment monitoring device; 54. Power supply device; Source controller; 62. First inverter; 63. Cooling tower; 64. Cooling fan; 65. Cold source water supply temperature sensor; 66. Cold source return water temperature sensor; 67. Liquid level sensor; 71. Heat exchange controller ;72. Second inverter; 73. Third inverter; 74. Primary water pump; 75. Secondary water pump; 76. Bypass; 77. Electric three-way valve; 78. Secondary water supply temperature sensor; 79. Secondary Water supply pressure sensor; 70. Secondary return water pressure sensor; 81. Terminal controller; 82. Terminal flow sensor; 83. Terminal pressure sensor; 84. Terminal temperature sensor.

Detailed ways

The accompanying drawings are for illustrative purposes only and cannot be construed as limiting the patent;

In order to better illustrate this embodiment, some parts in the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product;

For those skilled in the art, it is understandable that some well-known structures and descriptions thereof may be omitted in the drawings.

In the description of the present utility model, it should be understood that, in addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be interpreted as indicating or implying relative importance or implying the indicated technical features quantity. Thus, the defined "first" and "second" features may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

In the description of the present utility model, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. It can be said that the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

Example

As shown in Figure 1, a liquid-cooled distributed control system includes a cold source 1, a liquid-liquid heat exchanger 2, and one or more server cabinets 3, and the cold source 1 and the liquid-liquid heat exchanger 2 pass through once The water supply pipe 41 and the primary return pipe 42 are connected, and the liquid-liquid heat exchanger 2 is connected with the server cabinet 3 through the secondary water supply pipe 43 and the secondary return pipe 44. The liquid-cooled distributed control system also includes a centralized monitoring system 5, a cooling source Control system 6, heat exchange control system 7;

The centralized monitoring system 5 is electrically connected to the cold source control system 6 and the heat exchange control system 7 respectively, and is used for centralized control of the cold source control system 6 and the heat exchange control system 7;

The cold source control system 6 is used to control the cooling efficiency of the cold source 1;

The heat exchange regulating system 7 is used for regulating the heat exchange efficiency of the liquid-liquid heat exchanger 2 .

Since the refrigeration efficiency of the cold source 1 and the heat exchange efficiency of the liquid-liquid heat exchanger 2 are independently controlled by different control systems, point-to-point control can be realized. Moreover, since the centralized monitoring system 5 can centrally regulate the cold source control system 6 and the heat exchange control system 7, multi-point centralized control can be realized.

In the whole liquid cooling system, the cooling efficiency of the cold source 1 can be controlled alone, or the heat exchange efficiency of the liquid-liquid heat exchanger 2 can be controlled alone, or the cooling efficiency of the cold source 1 and the liquid-liquid heat exchanger 2 can be combined. Coordinated control of heat exchange efficiency to meet the heat dissipation requirements of the server cabinet 3 at different times and locations, thereby achieving energy saving, high efficiency, and stable effects.

Preferably, the primary water supply pipe 41 , the primary water return pipe 42 , the secondary water supply pipe 43 , and the secondary water return pipe 44 can be provided with valves, so as to facilitate the on-off control of the pipelines.

Further, the centralized monitoring system 5 includes a communication device 51, a human-machine interface 52, and a dynamic environment monitoring device 53. The cold source control system 6 and the heat exchange control system 7 are connected to the communication device 51, and the communication device 51 is connected to the dynamic environment. The monitoring device 53 is connected, and the man-machine interface 52 is connected with the communication device 51 and/or the dynamic environment monitoring device 53 .

The real-time parameters of the cold source control system 6, the heat exchange control system 7, and the control parameters of the dynamic environment monitoring device 53 can be transmitted to the man-machine interface 52 through the communication device 51, and the dynamic environment monitoring device 53 can also transmit the control through the communication device 51 Order to cold source control system 6, heat exchange control system 7. Monitoring personnel can see the real-time working status of the cold source 1 and liquid-liquid heat exchanger 2 and the control parameters of the dynamic ring monitoring device 53 through the man-machine interface 52, and can also send control commands to the cold source control through the dynamic ring monitoring device 53 The system 6 and the heat exchange control system 7, the cold source control system 6 and the heat exchange control system 7 regulate the cooling efficiency of the cold source 1 and the heat exchange efficiency of the liquid-liquid heat exchanger 2 according to the received control commands, and control parameters And the updated real-time parameters after regulation can be fed back to the man-machine interface 52, so that the monitoring personnel can see the updated working status of the cold source 1 and the liquid-liquid heat exchanger 2 through the man-machine interface 52.

The centralized monitoring system 5 may also include a power supply device 54 to provide power for various devices in the liquid cooling system to realize power distribution operation.

Further, the liquid-cooled distributed control system also includes one or more terminal detection systems 8, the server cabinet 3 is provided with a water inlet and a water outlet, and the terminal detection system 8 is connected to a communication device 51 for detecting incoming One or more of the temperature, flow and pressure of the water inlet and/or water outlet.

The terminal detection system 8 can detect various parameters of the refrigerant water flowing through the water inlet and outlet of the server cabinet 3, such as temperature, flow rate, pressure, etc., and transmit these parameters to the man-machine interface 52 through the communication device 51, so that The monitoring personnel monitor the heat dissipation of the server cabinet 3 in real time.

A data center computer room often houses multiple server cabinets 3, and one end detection system 8 can correspond to the water inlet and outlet of one or more server cabinets 3, and the parameter transmission of multiple end detection systems 8 requires a large number of on-site wiring. The parameters of each terminal detection system 8 are uniformly transmitted to the man-machine interface 52 through the communication device 51, which can not only ensure the reliability of all parameters and the timeliness of transmission, but also reduce the difficulty of field wiring in the machine room, greatly greatly It greatly improves the monitoring quality of the monitoring personnel on the entire liquid cooling system.

In this embodiment, the terminal detection system 8 may include a terminal controller 81, a terminal flow sensor 82, a terminal pressure sensor 83, and a terminal temperature sensor 84. The terminal flow sensor 82, the terminal pressure sensor 83, and the terminal temperature sensor 84 are all connected with the terminal control The terminal controller 81 is electrically connected to the communication device 51, and the communication device 51 is electrically connected to the man-machine interface 52 and the dynamic environment monitoring device 53. The terminal flow sensor 82 can be arranged at the water inlet of the server cabinet 3 for detecting the flow L1 at the water inlet; the terminal pressure sensor 83 can be arranged at the water outlet of the server cabinet 3 for detecting the pressure P3 at the water outlet; The terminal temperature sensor 84 is arranged at the water outlet of the server cabinet 3 for detecting T4 at the water outlet. The sizes of L1 , P3 , and T4 are transmitted to the terminal controller 81 , and the terminal controller 81 sends the sizes of L1 , P3 , and T4 to the man-machine interface 52 through the communication device 51 . Monitoring personnel can see L1, P3, and T4 of the server cabinet 3 through the man-machine interface 52, that is, they can know the current heat dissipation of the server cabinet. When the heat dissipation of the server cabinet 3 is abnormal or does not meet the requirements, the monitoring personnel can send control commands to the cold source control system 6 and the heat exchange control system 7 through the dynamic ring monitoring device 53 to adjust the cooling efficiency and liquid-liquid control system of the cold source 1 respectively. The heat exchange efficiency of the heat exchanger 2 is fed back to the human-machine interface 51 to control the parameters of the cooling efficiency and heat exchange efficiency.

Further, the cooling source control system 6 includes a cooling fan 64 connected in sequence, a first frequency converter 62, and a cooling source controller 61. The cooling fan 64 is used for auxiliary cooling of the cooling source 1. The cooling source controller 61 and the cooling source controller 61 are connected in sequence. The communication device 51 is connected.

The monitoring personnel can send the control command to the cold source 1 to the cold source controller 61 through the dynamic ring monitoring device 53, and the cold source controller 61 changes the output frequency of the first frequency converter 62 according to the received control command, and the cooling fan 64 The rotational speed of the cooling source 1 will also change accordingly, thereby changing the cooling efficiency of the cold source 1.

In this embodiment, the cooling source 1 includes a cooling tower 63 , and the cooling fan 64 is arranged above or below the cooling tower 63 to accelerate the cooling rate of the cooling water in the cooling tower 63 . When the rotating speed of the cooling fan 64 decreased, the cooling effect on the cooling water in the cooling tower 63 would decrease; when the cooling fan 64 rotating speed increased, the cooling effect on the cooling water in the cooling tower 63 would increase.

The output frequency of the first inverter 62 will be sent to the cooling source controller 61 , and the cooling source controller 61 will send the output frequency of the first inverter 62 to the man-machine interface 52 through the communication device 51 . The monitoring personnel can see the current output frequency of the first frequency converter 62 through the man-machine interface 52 , that is, they can know the current rotational speed of the cooling fan 64 . When the cooling efficiency of the cold source 1 does not meet the requirements, the monitoring personnel can send control commands to adjust the speed of the cooling fan 64 through the dynamic ring monitoring device 63 , and feed back the control parameters of the cooling fan 64 to the man-machine interface 51 .

At the same time, the cooling tower 63 may also be provided with a liquid level sensor 67 connected to the cooling source controller 61 for monitoring the cooling water volume in the cooling tower 63 .

Further, the heat exchange control system 7 includes a heat exchange controller 71, a second frequency converter 72, and a primary water pump 74 that are electrically connected in sequence. The primary water pump 74 is arranged on the primary water supply pipe 41 or the primary return water pipe 42. The thermal controller 71 is connected to the communication device 51 .

The monitoring personnel can send the control command to the liquid-liquid heat exchanger 2 to the heat exchange controller 71 through the dynamic ring monitoring device 53, and the heat exchange controller 71 changes the output frequency of the second frequency converter 72 according to the received control command , the rotational speed of the primary water pump 74 will also change accordingly, thereby changing the flow rate L2 of the cooling water produced by the cold source 1 flowing through the liquid-liquid heat exchanger, that is, changing the heat exchange efficiency of the liquid-liquid heat exchanger 2 . When the rotating speed of the primary water pump 74 decreases, the cooling water flow on the primary water supply pipe 41 and the primary return pipe 42 will decrease, and L2 will also decrease accordingly, resulting in a reduction in the heat exchange efficiency of the liquid-liquid heat exchanger 2; when the primary water pump When the rotation speed of 74 increases, the cooling water flow rate of the primary water supply pipe 41 and the primary return water pipe 42 will increase, and L2 will also increase accordingly, resulting in an increase in the heat exchange efficiency of the liquid-liquid heat exchanger 2 .

The output frequency of the second frequency converter 72 is transmitted to the heat exchange controller 71 , and the heat exchange controller 71 sends the output frequency of the second frequency converter 72 to the man-machine interface 52 through the communication device 51 . The monitoring personnel can see the current output frequency of the second frequency converter 72 through the man-machine interface 52 , that is, they can know the current rotational speed of the primary water pump 74 . When the heat exchange efficiency does not meet the requirements, the monitoring personnel can send control commands to adjust the speed of the primary water pump 74 through the dynamic ring monitoring device 53 , and feed back the control parameters of the primary water pump 74 to the man-machine interface 51 .

Further, the heat exchange control system 7 also includes a third frequency converter 73, a secondary water pump 75, the heat exchange controller 71, the third frequency converter 73, and the secondary water pump 75 are electrically connected in sequence, and the secondary water pump 75 is set on the secondary water pump 75. On the secondary water supply pipe 43 or the secondary water return pipe 44.

The monitoring personnel can also send the control command to the liquid-liquid heat exchanger 2 to the heat exchange controller 71 through the dynamic ring monitoring device 53, and the heat exchange controller 71 changes the output of the third frequency converter 73 according to the received control command. The frequency and the rotational speed of the secondary water pump 75 will also change accordingly, thereby changing the flow rate L3 of the refrigerant water flowing through the server cabinet 3 , that is, changing the heat exchange efficiency of the liquid-liquid heat exchanger 2 . When the rotational speed of the secondary water pump 75 decreases, the refrigerant water flow on the secondary water supply pipe 43 and the secondary return water pipe 44 will decrease, and L3 will also decrease accordingly, resulting in a decrease in the heat exchange efficiency of the liquid-liquid heat exchanger 2; When the speed of the secondary water pump 75 increases, the flow of cold coal water in the secondary water supply pipe 43 and the secondary return water pipe 44 will increase, and L3 will also increase accordingly, resulting in an increase in the heat exchange efficiency of the liquid-liquid heat exchanger 2 .

The output frequency of the third inverter 73 is also transmitted to the heat exchange controller 71 , and the heat exchange controller 71 sends the output frequency of the third inverter 73 to the man-machine interface 52 through the communication device 51 . Monitoring personnel can see the current output frequency of the third frequency converter 73 through the man-machine interface 52 , that is, they can know the current rotational speed of the secondary water pump 75 . When the heat exchange efficiency does not meet the requirements, the monitoring personnel can send control commands to adjust the speed of the secondary water pump 75 through the dynamic ring monitoring device 53 , and feed back the control parameters of the secondary water pump 75 to the man-machine interface 52 .

When the heat exchange efficiency does not meet the requirements, the monitoring personnel can also send control commands through the dynamic ring monitoring device 53, and simultaneously control the speeds of the primary water pump 74 and the secondary water pump 75, so that the primary water pump 74 and the secondary water pump 75 cooperate with each other to regulate the liquid- The heat exchange efficiency of the liquid heat exchanger 2 and the control parameters of the primary water pump 74 and the secondary water pump 75 are fed back to the man-machine interface 52 .

Further, the heat exchange control system 7 also includes a bypass 76 connecting the primary water supply pipe 41 and the primary return water pipe 42, an electric three-way valve 77, the electric three-way valve 77 is electrically connected to the heat exchange controller 71, and the electric three-way The valve 77 includes a port a, a port b, and a port c. The port a communicates with the bypass 76 , the port b communicates with the liquid-liquid heat exchanger 2 , and the port c communicates with the primary water supply pipe 41 or the primary return water pipe 42 .

The monitoring personnel can also send the control command to the liquid-liquid heat exchanger 2 to the heat exchange controller 71 through the dynamic ring monitoring device 53, and the heat exchange controller 71 adjusts each port of the electric three-way valve 77 according to the received control command. The opening and closing or opening of the primary water supply pipe 41 makes part of the cooling water flow to the liquid-liquid heat exchanger 2, and the other part directly flows to the primary return pipe 42, thereby adjusting the cooling water flow L2 flowing through the liquid-liquid heat exchanger 2 And the cooling water flow L4 left to flow through the bypass. When L2 decreases and L4 increases, the heat exchange efficiency of the liquid-liquid heat exchanger 2 will decrease; when L2 increases and L4 decreases, the heat exchange efficiency of the liquid-liquid heat exchanger 2 will increase.

The current opening and closing state and opening degree of each port of the electric three-way valve 77 will be transmitted to the heat exchange controller 71, and the heat exchange controller 71 will send the opening and closing state and opening degree to the man-machine interface through the communication device 51 52 in. The monitoring personnel can see the opening and closing status and the opening degree of each port of the electric three-way valve 77 through the man-machine interface 52, that is, they can know the current sizes of L2 and L4. When the heat transfer efficiency of the liquid-liquid heat exchanger 2 does not meet the requirements, the monitoring personnel can send control commands to control the electric three-way valve 77 through the dynamic ring monitoring device 53, thereby regulating L2 and L4, and turning the electric three-way valve 77 The control parameters are fed back to the man-machine interface 52.

Further, the cold source control system 6 also includes a cold source water supply temperature sensor 65 and/or a cold source return water temperature sensor 66, and the cold source water supply temperature sensor 65 is arranged on the primary water supply pipe 41 for detecting the cold source water supply temperature T1 and send T1 to the cold source controller 61 , the cold source return water temperature sensor 66 is arranged on the primary return water pipe 42 for detecting the cold source return water temperature T2 and sending T2 to the cold source controller 61 .

The cold source water supply temperature T1 and the cold source return water temperature T2 detected by the cold source water supply temperature sensor 65 and the cold source return water temperature sensor 66 will be sent to the cold source controller 61, and the cold source controller 61 will send the T1 and T2 are sent to the man-machine interface 52, and the monitoring personnel can see the current size of T1 and T2 through the man-machine interface 52, and according to the size and change of T1 and T2, know whether the cooling efficiency of the current cold source 1 does not meet the requirements . If the requirements are not met, the control command needs to be sent to the cold source controller 61 through the dynamic environment monitoring device 53 , and the control parameters are fed back to the man-machine interface 52 .

Further, the heat exchange control system 7 also includes a secondary water supply temperature sensor 78, a secondary water supply pressure sensor 79, and a secondary return water pressure sensor 70. The secondary water supply temperature sensor 78 and the secondary water supply pressure sensor 79 are set at the secondary On the water supply pipe 43, the secondary return water pressure sensor 70 is set on the secondary return water pipe 44, the secondary water supply temperature sensor 78 is used to detect the secondary water supply temperature T3 and send T3 to the heat exchange controller 71, the secondary water supply pressure sensor 79 Used to detect the secondary water supply pressure P1 and send P1 to the heat exchange controller 71 , the secondary return water pressure sensor 70 is used to detect the secondary return water pressure P2 and send P2 to the heat exchange controller 71 .

The secondary water supply temperature T3 detected by the secondary water supply temperature sensor 78 will be sent to the heat exchange controller 71, and the heat exchange controller 71 will send T3 to the man-machine interface 52 through the communication device 51, and the monitoring personnel can pass the man-machine The interface 52 sees the current size of T3, and according to the size of T3, learns whether the current heat exchange efficiency of the liquid-liquid heat exchanger 2 meets the heat dissipation requirement of the server cabinet 3. If the requirements are not met, the control command needs to be sent to the heat exchange controller 71 through the dynamic environment monitoring device 53 , and the control parameters are fed back to the man-machine interface 52 .

The secondary water supply pressure P1 and the secondary return water pressure P2 respectively detected by the secondary water supply pressure sensor 79 and the secondary return water pressure sensor 70 will be sent to the heat exchange controller 71, and the heat exchange controller 71 will transmit the P1 pressure through the communication device 51. , P2 to the man-machine interface 52, the monitoring personnel can see the pressure difference △P=P1-P2 of the current secondary supply and return water through the man-machine interface 52, and according to the size and change of the pressure difference △P, through the dynamic ring The monitoring device 53 sends regulation commands to the heat exchange controller 71 to keep the pressure difference ΔP constant, and feeds the regulation parameters back to the man-machine interface 52 .

The above-mentioned cold source controller 61 , cold source controller 71 , and terminal controller 81 may be specifically programmable logic controllers (PLC).

The working principle of the above-mentioned liquid-cooled distributed control system can be as follows:

When T1 and/or T2 do not meet the requirements, the dynamic ring monitoring device 53 sends a cold source control command to the cold source controller 61, and the cold source controller 61 controls the output frequency of the first frequency converter according to the received cold source control command, The first frequency converter controls the rotating speed of the cooling fan 64;

When T3 and/or the pressure difference between the secondary supply and return water △P = P1 - P2 does not meet the requirements, the dynamic ring monitoring device 53 sends a heat exchange control command to the heat exchange controller 71, and the heat exchange controller 71 The thermal control command controls the opening and closing and opening of the electric three-way valve 77, or controls the output power of the second frequency converter and/or the third frequency converter 73, the second frequency converter 72 controls the speed of the primary water pump 74, and the third frequency converter 73 controls the rotational speed of the secondary water pump 75 .

When T1 and/or T2 do not meet the requirements, that is, the refrigeration efficiency of the cold source 1 does not meet the requirements, the monitoring personnel input the control command for the cold source 1 on the dynamic ring monitoring device 53, and control the first frequency conversion through the cold source controller 61 The output power of the cooling device 62 is controlled, and then the rotation speed of the cooling fan 64 is controlled, so that the cooling efficiency of the cooling source 1 meets the cooling requirements of the server cabinet 3 .

When T3 and/or the pressure difference between the secondary supply and return water △P = P1 - P2 does not meet the requirements, that is, the heat exchange efficiency of the liquid-liquid heat exchanger 2 does not meet the requirements, and the monitoring personnel input The heat exchange control command controls the opening and closing or opening of the electric three-way valve 77 through the heat exchange controller 71, and then controls the flow rate L2 of the cooling water produced by the cold source 1 flowing through the liquid-liquid heat exchanger 2 and the flow through the bypass The flow L4 of the road 76; or control the output power of the second frequency converter 72 through the heat exchange controller 71, and then control the speed of the primary water pump 74; or control the output power of the third frequency converter 73 through the heat exchange controller 71, and then control The speed of the secondary water pump 75. Finally, the heat exchange efficiency of the liquid-liquid heat exchanger 2 can meet the heat dissipation requirements of the server cabinet 3 .

The same or similar reference numerals correspond to the same or similar components;

The positional relationship described in the drawings is only for illustrative purposes and cannot be construed as a limitation to this patent;

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (9)

1. A liquid-cooled distributed control system, including a cold source (1), a liquid-liquid heat exchanger (2), one or more server cabinets (3), and the cold source (1) exchanges heat with liquid-liquid The device (2) is connected through the primary water supply pipe (41) and the primary water return pipe (42), and the liquid-liquid heat exchanger (2) and the server cabinet (3) are connected through the secondary water supply pipe (43) and the secondary return water pipe (44). connected, characterized in that the liquid-cooled distributed control system also includes a centralized monitoring system (5), a cold source control system (6), and a heat exchange control system (7); The centralized monitoring system (5) is electrically connected to the cold source control system (6) and the heat exchange control system (7) respectively, and is used for centralized control of the cold source control system (6) and the heat exchange control system (7); The cold source control system (6), used for regulating the cooling efficiency of the cold source (1); The heat exchange regulating system (7) is used for regulating the heat exchange efficiency of the liquid-liquid heat exchanger (2). 2. The liquid-cooled distributed control system according to claim 1, characterized in that the centralized monitoring system (5) includes a communication device (51), a man-machine interface (52), and a dynamic environment monitoring device (53). The cold source control system (6), the heat exchange control system (7) are connected to the communication device (51), the communication device (51) is connected to the dynamic environment monitoring device (53), and the man-machine interface (52) is connected to the communication device (51). ) and/or dynamic environment monitoring device (53) connection. 3. The liquid-cooled distributed control system according to claim 2, characterized in that it further comprises one or more terminal detection systems (8), the server cabinet (3) is provided with a water inlet and a water outlet, and the terminal The detection system (8) is connected with the communication device (51), and is used to detect one or more of the temperature, flow and pressure of the water inlet and/or water outlet. 4. The liquid-cooled distributed control system according to claim 3, characterized in that, the cooling source control system (6) includes sequentially connected cooling fans (64), a first frequency converter (62), a cooling source control system The cooling device (61), the cooling fan (64) is used for auxiliary cooling of the cooling source (1), and the cooling source controller (61) is connected with the communication device (51). 5. The liquid-cooled distributed control system according to claim 4, characterized in that the heat exchange control system (7) includes a heat exchange controller (71), a second frequency converter (72), a primary The water pump (74), the primary water pump (74) is arranged on the primary water supply pipe (41) or the primary water return pipe (42), and the heat exchange controller (71) is connected with the communication device (51). 6. The liquid-cooled distributed control system according to claim 5, characterized in that, the heat exchange control system (7) also includes a third frequency converter (73), a secondary water pump (75), a heat exchange controller ( 71), the third frequency converter (73), and the secondary water pump (75) are electrically connected in sequence, and the secondary water pump (75) is arranged on the secondary water supply pipe (43) or the secondary water return pipe (44). 7. The liquid-cooled distributed control system according to claim 6, characterized in that the heat exchange control system (7) further includes a bypass (76) connecting the primary water supply pipe (41) and the primary return water pipe (42) , the electric three-way valve (77), the electric three-way valve (77) is electrically connected to the heat exchange controller (71), the electric three-way valve (77) includes port a, port b, port c, port a and bypass ( 76) is connected, the port b is connected with the liquid-liquid heat exchanger (2), and the port c is connected with the primary water supply pipe (41) or the primary return water pipe (42). 8. The liquid-cooled distributed control system according to claim 7, characterized in that the cold source control system (6) further includes a cold source water supply temperature sensor (65) and/or a cold source return water temperature sensor (66) , the cold source water supply temperature sensor (65) is set on the primary water supply pipe (41), used to detect the cold source water supply temperature T1 and send T1 to the cold source controller (61), the cold source return water temperature sensor (66) is set On the primary return water pipe (42), it is used to detect the return water temperature T2 of the cold source and send T2 to the cold source controller (61). 9. The liquid-cooled distributed control system according to claim 8, characterized in that, the heat exchange control system (7) further includes a secondary water supply temperature sensor (78), a secondary water supply pressure sensor (79), a secondary return The water pressure sensor (70), the secondary water supply temperature sensor (78), and the secondary water supply pressure sensor (79) are arranged on the secondary water supply pipe (43), and the secondary water return pressure sensor (70) is arranged on the secondary water return pipe (44 ), the secondary water supply temperature sensor (78) is used to detect the secondary water supply temperature T3 and send T3 to the heat exchange controller (71), the secondary water supply pressure sensor (79) is used to detect the secondary water supply pressure P1 and send P1 is sent to the heat exchange controller (71), and the secondary return water pressure sensor (70) is used to detect the secondary return water pressure P2 and send P2 to the heat exchange controller (71).