CN-116867221-B - Control method of machine room cooling system

Abstract

Compared with the prior art, the control method of the machine room cooling system has the following technical effects that the opening degree of each air supply opening corresponding to the closed cold channel is adjusted according to the comparison result by comparing the first differential pressure value between the closed cold channel and the underfloor air supply channel with the first differential pressure threshold value, and the air supply quantity is adjusted in time so as to realize accurate and rapid adjustment of local air quantity and ensure rapid response of the closed cold channel. The intelligent control of the precise air supply system of the closed cold channels is realized by detecting the pressure difference value between the closed cold channels and the underfloor air supply channels and timely adjusting the air supply quantity change in each closed cold channel according to the comparison result.

Inventors

• AN LIQIANG

Assignees

• 中铁第五勘察设计院集团有限公司

Dates

Publication Date

20260512

Application Date

20230626

Claims (9)

1. 1. A control method of a machine room cooling system is characterized in that the machine room cooling system comprises a machine room and an air conditioner, wherein at least one side of the machine room is provided with the air conditioner, a plurality of rows of machine cabinets are arranged in the machine room, two rows of machine cabinets are in a group, a sealed closed cold channel is enclosed between every two rows of machine cabinets, an open hot channel is arranged between every two adjacent groups of machine cabinets, one side of the machine cabinet is provided with an air inlet communicated with the closed cold channel, the other side of the machine cabinet is provided with an air outlet communicated with the open hot channel, a plurality of air conditioners for supplying cold air are arranged in the air conditioner, a communicating underfloor air supply channel is arranged below the machine room and the air conditioner, a cold air outlet of the air conditioner is communicated with the underfloor air supply channel, and a return air inlet for enabling the open hot channel to be communicated with the air conditioner is arranged between the machine room and the air conditioner; the method further comprises the steps of: Acquiring a first differential pressure value between the closed cold channel and the underfloor air supply channel; Judging whether the first differential pressure value is smaller than a first differential pressure threshold value, if so, increasing the opening of each air supply outlet corresponding to the closed cold channel; the method further comprises the steps of: acquiring a second pressure value of a preset pressure detection point in the row of the extending direction of the cold air outlet of the air conditioner; Judging whether the difference value between the maximum value and the minimum value of the second pressure value in the row is larger than or equal to a second pressure difference threshold value, if so, regulating the air output of the air conditioner corresponding to the row or starting and stopping the air conditioner corresponding to the row, wherein the second pressure difference threshold value is larger than the first pressure difference threshold value.
2. 2. The method for controlling a cooling system of a machine room according to claim 1, wherein after the determining whether the first differential pressure value is smaller than a first differential pressure threshold value, the method further comprises: and when the first differential pressure value is larger than or equal to a second differential pressure threshold value, reducing the opening degree of each air supply outlet corresponding to the closed cold channel.
3. 3. The method of controlling a machine room cooling system according to claim 1, characterized in that the method further comprises: acquiring a first temperature value at each air supply port in each closed cold channel; Judging whether the first temperature value is larger than or equal to a first temperature threshold value, if so, increasing the opening of the air supply outlet corresponding to the first temperature value.
4. 4. The method for controlling a cooling system of a machine room according to claim 3, wherein after increasing the opening of the air supply port corresponding to the first temperature value, the method further comprises: calculating a first temperature average value of all the first temperature values in each closed cold channel; Judging whether the ratio of the first temperature value to the first temperature average value is larger than or equal to a deviation threshold value, if so, reducing the opening of the air supply outlet corresponding to the first temperature value.
5. 5. The method of controlling a machine room cooling system according to claim 1, characterized in that the method further comprises: acquiring first pressure values of a plurality of preset pressure detection points of the underfloor air supply channel; Judging whether the number of the preset pressure detection points corresponding to the first pressure value exceeding the first preset pressure range is larger than or equal to a first number threshold value, and if yes, adjusting the air output of all the air conditioners.
6. 6. The method of controlling a machine room cooling system according to claim 1, characterized in that the method further comprises: judging whether the second temperature value of the underfloor air supply channel is larger than or equal to a third temperature threshold value, and if so, adjusting the air supply temperature of all the air conditioners.
7. 7. The control method of a machine room cooling system according to any one of claims 1 to 6, further comprising a rapid electric air volume adjusting valve located on the air supply port for adjusting an opening degree of the air supply port.
8. 8. The method of controlling a machine room cooling system according to any one of claims 1-6, wherein the machine room cooling system further comprises: the first temperature sensors are positioned at the positions, corresponding to the air supply openings, in the closed cold channel; The pressure sensors and the second temperature sensors are respectively positioned in the underfloor air supply channel and are arranged in an array.
9. 9. The control method of a cooling system of a machine room according to any one of claims 1 to 6, wherein a differential pressure sensor is provided between the closed cooling passages on the upper and lower sides of the air supply opening and the underfloor air supply passage, and the differential pressure sensor is connected to the controller.

Description

Control method of machine room cooling system Technical Field The application relates to the technical field of heating ventilation and air conditioning, in particular to a control method of a machine room cooling system. Background With the development of the information industry, more and more data centers are built around the country. Because various types of equipment can generate a large amount of heat due to power consumption in the operation process of the data center machine room, and the generated heat is not uniform, in order to ensure that the electronic equipment normally operates at a proper temperature, the heat needs to be efficiently and stably conveyed out. Currently, in the operation practice of the data machine room, two heat dissipation schemes are selected, one is an air cooling mode and the other is a liquid cooling mode. The construction and operation costs of the air cooling mode are relatively low, and the air cooling mode is widely applied to a data center machine room. The traditional air supply mode cannot perform targeted temperature control and heat dissipation on local hot spots, so that a precise air conditioner balanced cooling system capable of performing temperature balanced control on large-area and multi-cabinet places is needed to be proposed. Disclosure of Invention The embodiment of the application provides a control method of a machine room cooling system, which aims to solve the problem that precise temperature balance control cannot be performed on a large-area and multi-cabinet place. In order to achieve the above purpose, the present application provides the following technical solutions: A control method of a machine room cooling system comprises a machine room and an air conditioner, wherein at least one side of the machine room is provided with the air conditioner, a plurality of rows of machine cabinets are arranged in the machine room, two rows of machine cabinets are in a group, a sealed closed cold channel is enclosed between every two rows of machine cabinets, an open hot channel is arranged between every two adjacent groups of machine cabinets, one side of each machine cabinet is provided with an air inlet communicated with the closed cold channel, the other side of each machine cabinet is provided with an air outlet communicated with the open hot channel, a plurality of air conditioners for supplying cold air are arranged in the air conditioner, a communicating underfloor air supply channel is arranged below the machine room and the air conditioner, a cold air outlet of the air conditioner is communicated with the underfloor air supply channel, and a return air inlet for enabling the open hot channel to be communicated with the air conditioner is arranged between the machine room and the air conditioner; the method further comprises the steps of: Acquiring a first differential pressure value between the closed cold channel and the underfloor air supply channel; Judging whether the first differential pressure value is smaller than a first differential pressure threshold value, if so, increasing the opening of each air supply outlet corresponding to the closed cold channel. Optionally, after the determining whether the first differential pressure value is less than a first differential pressure threshold, the method further includes: And when the first differential pressure value is larger than or equal to a second differential pressure threshold value, reducing the opening degree of each air supply outlet corresponding to the closed cold channel, wherein the second differential pressure threshold value is larger than the first differential pressure threshold value. Optionally, the method further comprises: Acquiring the first temperature value of each air supply port in each closed cold channel; Judging whether the first temperature value is larger than or equal to a first temperature threshold value, if so, increasing the opening of the air supply outlet corresponding to the first temperature value. Optionally, after the opening degree of the air supply port corresponding to the first temperature value is increased, the method further includes: calculating a first temperature average value of all the first temperature values in each closed cold channel; Judging whether the ratio of the first temperature value to the first temperature average value is larger than or equal to a deviation threshold value, if so, reducing the opening of the air supply outlet corresponding to the first temperature value. Optionally, the method further comprises: acquiring first pressure values of a plurality of preset pressure detection points of the underfloor air supply channel; Judging whether the number of the preset pressure detection points corresponding to the first pressure value exceeding the first preset pressure range is larger than or equal to a first number threshold value, and if yes, adjusting the air output of all the air conditioners. Optionally, the method