Liquid-cooled electronic equipment overpressure automatic alarm pressure relief device and control method thereof

Abstract

The application relates to the technical field of airborne computer system communication, and discloses a liquid-cooled electronic device overpressure automatic alarm pressure relief device and a control method thereof. By changing the actual opening pressure value of the second one-way valve with the change of the working temperature, not only can the risks such as bulging and cracking caused by overpressure of the liquid-cooled electronic device under various abnormal liquid passing states such as storage and transportation be avoided, but also the problem of the too large opening pressure value of the second one-way valve when the working temperature is too low can be avoided, so that the pressure value in the liquid-cooled pipeline can reach the opening pressure value, and the liquid-cooled pipeline can be timely pressure relieved.

Description

Technical Field

[0001] This invention relates to the field of communication technology for airborne computer systems, and discloses an automatic overpressure alarm and pressure relief device and its control method for liquid-cooled electronic equipment. Background Technology

[0002] Compared to traditional air-cooled chassis, liquid-cooled chassis are suitable for high-power electronic devices due to their superior auxiliary cooling and heat dissipation capabilities. The operation process of a liquid-cooled chassis is as follows: the coolant flows rapidly into the chassis through the liquid cooling connector inlet, completes heat exchange within the flow channel, and then flows out through the liquid cooling connector outlet, completing the entire flow cycle.

[0003] In daily use, liquid-cooled chassis are usually connected to liquid cooling equipment that provides coolant. The liquid cooling inlet and outlet of the chassis are kept in contact with the liquid cooling equipment. At this time, the pressure inside the chassis is balanced with the external atmospheric pressure, and the pressure inside the chassis will not increase excessively.

[0004] When a liquid-cooled chassis is not in a normal liquid-flow state, such as during storage, handling, or transportation when it is not connected to the liquid-cooling equipment, its liquid-cooling channels will be in a closed state. Because residual coolant will remain in the channels, it is prone to thermal expansion and contraction. Furthermore, when the ambient temperature rises, the coolant in the channels will expand due to heat. If pressure is not released in time, overpressure can cause the chassis to bulge, and the welds in the channels to crack, posing a risk of coolant seeping into and damaging electronic equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic overpressure alarm and pressure relief device and its control method for liquid-cooled electronic equipment. This device can not only avoid the risks of bulging and cracking caused by overpressure in liquid-cooled electronic equipment under various abnormal liquid flow conditions such as storage and transportation, but also avoid the problem of excessive opening pressure of the second one-way valve when the operating temperature is too low. This ensures that the pressure in the liquid-cooled pipeline can reach the opening pressure value and achieve timely pressure relief of the liquid-cooled pipeline.

[0006] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows:

[0007] An automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment includes:

[0008] A chassis for mounting liquid-cooled electronic equipment;

[0009] The liquid cooling pipe has two ends respectively installed on the chassis for connecting to external coolant conduits; the inlet end of the liquid cooling pipe is provided with a first check valve for coolant to flow in, and the outlet end of the liquid cooling pipe is provided with a second check valve for coolant to flow out, the second check valve being an electrically controlled valve.

[0010] A temperature sensing rod, wherein one end of the temperature sensing rod is a fixed end and the other end is a cantilever end;

[0011] A displacement sensor is installed inside the chassis near the cantilever end of the temperature sensing rod. The displacement sensor is used to collect the axial deformation of the cantilever end of the temperature sensing rod.

[0012] A pressure sensor is installed inside the liquid cooling pipe to collect the first pressure value inside the liquid cooling pipe in real time.

[0013] The controller has its input terminals connected to a displacement sensor and a pressure sensor, and its output terminal connected to the second check valve. The controller is used to receive a first pressure value transmitted by the pressure sensor and the axial deformation of the temperature sensing rod transmitted by the displacement sensor; adjust the actual opening pressure value of the second check valve according to the axial deformation of the temperature sensing rod, the design operating temperature of the second check valve, and the design opening pressure value; and the controller is also used to control the second check valve to open when the first pressure value is greater than or equal to the actual opening pressure value.

[0014] Furthermore, the actual opening pressure value of the second check valve ,in The design opening pressure value for the second check valve. The design operating temperature for the second check valve. This represents the axial deformation of the temperature sensing rod obtained by the displacement sensor. is the coefficient of linear expansion of the temperature sensing rod.

[0015] Furthermore, it also includes an alarm, which is used to receive a first pressure value measured by a pressure sensor. When the first pressure value is greater than or equal to the alarm threshold of the alarm when the liquid cooling pipeline is not working, the alarm will issue an alarm prompt.

[0016] Furthermore, a bracket is provided inside the chassis. One end of the bracket is fixed inside the chassis, and a pulley is installed on the other end of the bracket. The groove of the pulley contacts the outer wall of the temperature sensing rod near the cantilever end, and the pulley is located directly below the temperature sensing rod.

[0017] To achieve the above-mentioned technical effects, the present invention also provides a control method for an automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment. This control method, based on the automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment, includes:

[0018] Obtain the design operating temperature and design opening pressure of the second check valve;

[0019] A displacement sensor is used to collect the axial deformation of the cantilever end of the temperature sensing rod, and the collected axial deformation of the temperature sensing rod is transmitted to the input end of the controller.

[0020] A pressure sensor is used to collect the first pressure value in the liquid cooling pipeline in real time and transmit the first pressure value to the controller input terminal;

[0021] The controller receives the axial deformation amount and the first pressure value transmitted by the displacement sensor, and adjusts the actual opening pressure value of the second check valve according to the axial deformation amount, the design operating temperature of the second check valve, and the design opening pressure value; and controls the second check valve to open when the first pressure value is greater than or equal to the actual opening pressure value.

[0022] Furthermore, the controller is through The actual opening pressure value of the second check valve was obtained through analysis. ,in The design opening pressure value for the second check valve. The design operating temperature for the second check valve. This represents the axial deformation of the temperature sensing rod obtained by the displacement sensor. is the coefficient of linear expansion of the temperature sensing rod.

[0023] Furthermore, it also includes using an alarm to receive the first pressure value measured by a pressure sensor. When the first pressure value of the liquid cooling pipeline is not working is greater than or equal to the alarm threshold of the alarm, the alarm will issue an alarm prompt.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: by making the actual opening pressure value of the second check valve change with the working temperature, the present invention can not only avoid the risks of bulging and cracking caused by overpressure in liquid-cooled electronic equipment under various abnormal liquid flow conditions such as storage and transportation, but also avoid the problem of excessive opening pressure value of the second check valve when the working temperature is too low, thereby ensuring that the pressure value in the liquid-cooled pipeline can reach the opening pressure value and realize timely pressure relief of the liquid-cooled pipeline. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overpressure automatic alarm and pressure relief device for liquid-cooled electronic equipment in the embodiment;

[0026] The components include: 1. Chassis; 2. Liquid cooling pipes; 3. Temperature sensing rod; 4. Displacement sensor; 5. Pressure sensor; 6. Controller; 7. First check valve; 8. Second check valve; 9. Alarm; 10. Bracket. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0028] Example

[0029] See Figure 1 An overpressure automatic alarm and pressure relief device for liquid-cooled electronic equipment includes:

[0030] Chassis 1, which is used to install liquid-cooled electronic equipment;

[0031] The liquid cooling pipe 2 has two ends respectively installed on the chassis 1 for connecting to external coolant conduits; the inlet end of the liquid cooling pipe 2 is provided with a first one-way valve 7 for coolant to flow in, and the outlet end of the liquid cooling pipe 2 is provided with a second one-way valve 8 for coolant to flow out, and the second one-way valve 8 is an electrically controlled valve.

[0032] Temperature sensing rod 3, one end of which is a fixed end and the other end is a cantilever end;

[0033] Displacement sensor 4 is installed inside the chassis 1 near the cantilever end of the temperature sensing rod 3. The displacement sensor 4 is used to collect the axial deformation of the cantilever end of the temperature sensing rod 3.

[0034] Pressure sensor 5, which is installed inside the liquid cooling pipe 2, is used to collect the first pressure value inside the liquid cooling pipe 2 in real time;

[0035] The controller 6 has its input terminal connected to the displacement sensor 4 and the pressure sensor 5, and its output terminal connected to the second check valve 8.

[0036] In this embodiment, the control method for the automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment is as follows: a displacement sensor 4 is used to collect the axial deformation of the cantilever end of the temperature sensing rod 3, and the collected axial deformation of the temperature sensing rod 3 is transmitted to the input end of the controller 6; a pressure sensor 5 is used to collect the first pressure value in the liquid-cooled pipeline 2 in real time, and the first pressure value is transmitted to the input end of the controller 6; the controller 6 obtains the design operating temperature and design opening pressure value of the second one-way valve 8; the controller 6 adjusts the actual opening pressure value of the second one-way valve 8 according to the axial deformation, the design operating temperature of the second one-way valve 8, and the design opening pressure value; and when the first pressure value is greater than or equal to the actual opening pressure value, the second one-way valve 8 is controlled to open. By making the actual opening pressure value of the second one-way valve 8 change with the change of operating temperature, not only can the risks of bulging and cracking caused by overpressure in various abnormal liquid flow states such as storage and transportation of liquid-cooled electronic equipment be avoided; but also the problem of excessive opening pressure value of the second one-way valve 8 when the operating temperature is too low can be avoided, thereby ensuring that the pressure value in the liquid-cooled pipeline 2 can reach the opening pressure value and realize timely pressure relief of the liquid-cooled pipeline 2.

[0037] In this embodiment, the actual opening pressure value of the second check valve 8 ,in The design opening pressure value for the second check valve 8. The design operating temperature for the second check valve 8, The axial deformation of the temperature sensing rod 3 is obtained by the displacement sensor 4. is the coefficient of linear expansion of temperature sensing rod 3.

[0038] The automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment in this embodiment also includes an alarm 9. The alarm 9 is used to receive the first pressure value measured by the pressure sensor 5. When the first pressure value of the liquid-cooled pipeline 2 is greater than or equal to the alarm threshold of the alarm 9, the alarm 9 issues an alarm. By combining the three key processes of pressure monitoring, overpressure alarm, and automatic pressure relief, the shortcomings of existing commonly used pressure relief methods, which can only be used for single scenarios such as monitoring, alarm, or pressure relief, are avoided.

[0039] A bracket 10 is installed inside the housing 1. One end of the bracket 10 is fixed inside the housing 1, and a pulley is installed on the other end of the bracket 10. The groove of the pulley contacts the outer wall of the temperature sensing rod 3 near the cantilever end, and the pulley is located directly below the temperature sensing rod 3. The bracket 10 supports the cantilever end of the temperature sensing rod 3, avoiding the problem of deformation of the cantilever end. Furthermore, the support of the bracket 10 through the groove of the pulley reduces the friction between the bracket 10 and the temperature sensing rod 3, thereby avoiding the problem of large forces between the bracket 10 and the temperature sensing rod 3 affecting the axial elongation of the cantilever end, and ensuring the accuracy of the actual opening pressure value of the second one-way valve 8.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment, characterized in that, include: A chassis (1) is used to mount liquid-cooled electronic equipment; Liquid cooling pipe (2), the two ends of which are respectively set on the chassis (1) for connecting external coolant conduits; the inlet end of the liquid cooling pipe (2) is provided with a first check valve (7) for coolant to flow in, and the outlet end of the liquid cooling pipe (2) is provided with a second check valve (8) for coolant to flow out, the second check valve (8) being an electrically controlled valve; Temperature sensing rod (3), one end of which is a fixed end and the other end is a cantilever end; Displacement sensor (4) is installed inside the chassis (1) near the cantilever end of the temperature sensing rod (3). The displacement sensor (4) is used to collect the axial deformation of the cantilever end of the temperature sensing rod (3). Pressure sensor (5), the pressure sensor (5) is installed in the liquid cooling pipe (2) and is used to collect the first pressure value in the liquid cooling pipe (2) in real time; The controller (6) has its input terminal connected to the displacement sensor (4) and the pressure sensor (5), and its output terminal connected to the second check valve (8). The controller (6) is used to receive the first pressure value transmitted by the pressure sensor (5) and the axial deformation of the temperature sensing rod (3) transmitted by the displacement sensor (4); adjust the actual opening pressure value of the second check valve (8) according to the axial deformation of the temperature sensing rod (3), the design working temperature of the second check valve (8), and the design opening pressure value; and the controller (6) is also used to control the second check valve (8) to open when the first pressure value is greater than or equal to the actual opening pressure value; the actual opening pressure value of the second check valve (8) ,in The design opening pressure value for the second check valve (8) is... The design operating temperature of the second check valve (8) is... The axial deformation of the temperature sensing rod (3) is obtained by the displacement sensor (4). is the coefficient of linear expansion of the temperature sensing rod (3).

2. The automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment according to claim 1, characterized in that, It also includes an alarm (9), which is used to receive the first pressure value measured by the pressure sensor (5). When the first pressure value of the liquid cooling pipe (2) is not working, it is greater than or equal to the alarm threshold of the alarm (9), and the alarm (9) issues an alarm prompt.

3. The automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment according to claim 1, characterized in that, A bracket (10) is provided inside the chassis (1). One end of the bracket (10) is fixed inside the chassis (1), and a pulley is installed on the other end of the bracket (10). The groove of the pulley contacts the outer wall of the temperature sensing rod (3) near the cantilever end, and the pulley is located directly below the temperature sensing rod (3).

4. A control method for an automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment, the control method being based on the automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment as described in any one of claims 1-3, characterized in that, include: Obtain the design operating temperature and design opening pressure of the second check valve (8); The displacement sensor (4) is used to collect the axial deformation of the cantilever end of the temperature sensing rod (3), and the collected axial deformation of the temperature sensing rod (3) is transmitted to the input end of the controller (6). The pressure sensor (5) is used to collect the first pressure value in the liquid cooling pipe (2) in real time and transmit the first pressure value to the input terminal of the controller (6); The controller (6) receives the axial deformation amount and the first pressure value transmitted by the displacement sensor (4), and adjusts the actual opening pressure value of the second check valve (8) according to the axial deformation amount, the design working temperature of the second check valve (8) and the design opening pressure value; and controls the second check valve (8) to open when the first pressure value is greater than or equal to the actual opening pressure value.

5. The control method for an automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment according to claim 4, characterized in that, In the controller (6) via The actual opening pressure value of the second check valve was obtained through analysis. ,in The design opening pressure value for the second check valve (8) is... The design operating temperature of the second check valve (8) is... The axial deformation of the temperature sensing rod (3) is obtained by the displacement sensor (4). is the coefficient of linear expansion of the temperature sensing rod (3).

6. The control method for an automatic overpressure alarm and pressure relief device for liquid-cooled electronic equipment according to claim 4, characterized in that, It also includes receiving the first pressure value measured by the pressure sensor (5) using an alarm (9). When the first pressure value of the liquid cooling pipe (2) is greater than or equal to the alarm threshold of the alarm (9), the alarm (9) issues an alarm prompt.

Images