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A pressure monitoring system and method for a pulsating heat pipe

A pulsating heat pipe and pressure monitoring technology, which is applied in the direction of pressure difference measurement between multiple valves, measurement of fluid pressure, measurement devices, etc., can solve the problem of low pressure measurement accuracy

Active Publication Date: 2020-07-21
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a pressure monitoring system and method of a pulsating heat pipe to overcome the problem of low pressure measurement accuracy of the pulsating heat pipe in the prior art

Method used

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  • A pressure monitoring system and method for a pulsating heat pipe
  • A pressure monitoring system and method for a pulsating heat pipe
  • A pressure monitoring system and method for a pulsating heat pipe

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Experimental program
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Embodiment 1

[0039] figure 1 The flow chart of the pressure monitoring system of the pulsating heat pipe provided in Embodiment 1 of the present invention, figure 2 For the schematic diagram of the pressure monitoring system of the pulsating heat pipe provided in Embodiment 1 of the present invention, refer to figure 1 and figure 2 , the system includes a pulsating heat pipe subsystem, a heating and cooling subsystem and a dynamic data acquisition subsystem.

[0040] The dynamic data acquisition subsystem includes a temperature monitoring device 9, a pressure monitoring device 10 and an acquisition computer 7; the temperature monitoring device is used to monitor the temperature of the working medium at the measuring point. The acquisition computer is used to display and save the collected instantaneous temperature and pressure values ​​of the pulsating heat pipe in real time, and generate temperature and pressure pulsation curves. The pressure monitoring device 10 includes a pressure ...

Embodiment 2

[0053] Figure 5 It is the flow chart of the pressure monitoring method in Embodiment 2 of the present invention, referring to Figure 5 , the method includes:

[0054] S1 air tightness inspection: vacuumize the pulsating heat pipe subsystem to check the air tightness of the system;

[0055] S2 Condition preparation: Use a syringe to fill the valve of the liquid-filled tee with working fluid, and heat and cool the pulsating heat pipe through the cold source and heat source according to the test conditions;

[0056] S3 temperature and pressure monitoring: read the measuring point temperature of the pulsating heat pipe, the pressure difference value of the pressure difference sensor at the measuring point and the pressure value of the tee part of the pressure sensor through the acquisition computer;

[0057] S4 Calculation of measuring point pressure: Obtain the pressure value of each measuring point on the pulsating heat pipe through the pressure value and the pressure differ...

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Abstract

The invention provides a pressure monitoring system for a pulsating heat pipe. The pressure monitoring system comprises a pulsating heat pipe subsystem, a heating and cooling subsystem and a dynamic data acquisition subsystem, wherein the dynamic data acquisition subsystem comprises a temperature monitoring device, a pressure monitoring device and an acquisition computer; the temperature monitoring device is used for monitoring working medium temperature of a monitoring point; the acquisition computer is used for displaying and storing acquired instantaneous temperature value and pressure value of the pulsating heat pipe in real time; the pressure monitoring device comprises a pressure sensor and a differential pressure sensor; the pressure sensor is used for monitoring a pressure value ofa liquid-filled three-way portion, serving as a reference point, of the pulsating heat pipe; and the differential pressure sensor is used for monitoring a pressure difference value between the monitoring point and the reference point on the pulsating heat pipe. The pressure monitoring system and the pressure monitoring method solve the problem of imprecise measurement since the pressure of the pulsating heat pipe operating under different working conditions is high and the pressure difference variation at points in the pipe is small.

Description

technical field [0001] The invention relates to the fields of electronic device cooling and high-efficiency heat transfer, in particular to a pressure monitoring system and method of a pulsating heat pipe. Background technique [0002] The pulsating heat pipe is a new and unique heat transfer element based on ordinary heat pipes and is superior to ordinary heat pipes. The principle of pulsating heat pipes is to vacuumize the serpentine capillary and then fill part of the working fluid. Since the diameter of the tube is small enough, the working fluid Due to the effect of surface tension, the distribution of gas and liquid plugs will be formed randomly in the tube. When working in the evaporating section, the working fluid evaporates to form bubbles, and the volume and pressure increase; when in the condensing section, the bubbles cool and shrink and burst, and the pressure drops. Due to the pressure difference between the two ends and the pressure imbalance between adjacent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L11/00G01L13/00
CPCG01L11/00G01L13/00
Inventor 史维秀陈红迪潘利生张元张翔宇
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE