A device and method for removing water from a two-phase flow medium in a large-size high-precision complex flow channel

Abstract

A kind of two-phase flow medium large size high-precision complex flow channel water removal device and method thereof, with connecting pipeline in turn connect air compressor, air tank, stop valve, filter, water trap, oil remover, air heater, check valve, air compressor generates compressed air, is sent into air tank storage, opens stop valve and is sent into filter to obtain clean compressed air, is sent into water trap and oil remover to obtain dry and pure compressed air, is sent into air heater and is heated, opens check valve and enters workpiece flow channel through flow channel joint, dries residual water.

Description

Technical Field

[0001] This invention belongs to the field of workpiece internal cavity dewatering technology, specifically relating to a dewatering technology for complex internal flow channels in electronic equipment. Background Technology

[0002] Cooling channels in electronic equipment connect heat-generating and heat-dissipating units, facilitating the flow of cooling medium and transferring heat; they are an indispensable and crucial component. As electronic equipment evolves towards higher performance, the demands on the heat dissipation efficiency of cooling systems are increasing, leading to the replacement of liquid coolants with two-phase flow media such as Freon. Electronic equipment is becoming increasingly integrated and large-scale, resulting in more complex cooling channels with larger dimensions. The high precision requirements of electronic equipment necessitate ever-increasing precision in machining and assembly. The manufacturing process of liquid-cooled channel substrates in electronic equipment, especially the internal liquid-cooled channels of large-panel arrays, involves welding, surface treatment, and machining. Residual moisture after cleaning reduces the cooling efficiency of the two-phase flow media.

[0003] For dehydration of flow channels in electronic equipment, methods include oven heating and drying, and vacuum dehydration. Large-size arrays and panels exceeding 5m in length / width cannot be placed in ovens due to size limitations, and custom-made ovens are too expensive. Vacuum dehydration requires large-scale industrial vacuum equipment, is time-consuming and subject to high ambient temperature requirements, and may cause collapse of internal flow channels in high-precision thin-walled components. It also has poor dehydration effects on large, complex internal flow channels and is unsuitable for environments below 0℃, where residual water in the internal flow channels will have frozen.

[0004] For large-size, high-precision, and complex internal flow channels of two-phase flow media, there is an urgent need for a reliable water removal device and method that is not limited by ambient temperature. Summary of the Invention

[0005] To address the water removal problem in large-size, high-precision, and complex internal flow channels of electronic equipment cooling systems, a water removal device and method for large-size, high-precision, and complex flow channels using two-phase flow media were adopted. This solved the problem that existing technologies could not achieve high-quality and high-efficiency water removal, significantly reducing manufacturing costs and shortening the production cycle.

[0006] The dehydration device is connected in sequence to an air compressor, an air tank, a shut-off valve, a filter, a dehydrator, an oil separator, an air heater, and a check valve via connecting pipes. The air compressor generates compressed air, which is stored in the air tank. The shut-off valve is opened to send clean compressed air into the filter, which then sends it into the dehydrator and oil separator to obtain dry and pure compressed air. This air is then sent into the air heater to be heated, and the check valve is opened to allow it to enter the workpiece flow channel through the flow channel connector to dry residual water.

[0007] A temperature monitor collects the airflow temperature at the outlet of the one-way valve, a flow monitor collects the airflow velocity at the outlet of the one-way valve, and a micro-moisture tester collects the air moisture content at other outlets of the workpiece flow channel. The airflow temperature, airflow velocity, and air moisture content are sent to the central controller via a signal transmission line. The operating parameters are updated based on the temperature, flow rate, and moisture content, and control signals are generated. These signals are then sent to the air compressor, air heater, and one-way valve via a command transmission line to adjust the air pressure, temperature, and flow rate in real time, thereby achieving water removal feedback regulation.

[0008] The filter uses solid particles with a diameter of no more than 20 micrometers, the water content of the compressed air output by the dewatering device is less than 7000 ppmv, the flow rate of the output compressed air under standard atmospheric pressure is 0~50 m3 / min, the air heater heats the compressed air to a maximum of 80℃, and the flow channel connector is replaced with different models according to different workpiece flow channel interfaces.

[0009] Let M0 represent the air moisture content at other outlets of the workpiece flow channel at time t0, M1 represent the air moisture content at other outlets of the workpiece flow channel at time t1, and P represent the dehumidification efficiency of the workpiece flow channel. .

[0010] Measure and calculate the workpiece flow channel diameter D and flow channel volume V, monitor the ambient temperature T and air moisture value Ms, connect the flow channel connector to the workpiece flow channel air inlet, and input the workpiece and environmental conditions into the process parameter expert database to determine the initial temperature and airflow velocity of the compressed air generated by the dehydration device, or manually set the initial air temperature and airflow velocity. Run the dehydration test for a period of time. Before the end of the test run, collect M0. If M0 ≤ Ms, the workpiece is considered dry and dehydration is not required. Otherwise, calculate the dehydration efficiency P. Calculate the dehydration efficiency Pt based on D, V, T, and Ms in the process parameter expert database. If 0 < P < Pt, it means M1 is greater than M0 and P < Pt, so the dehydration efficiency and effect are not good, and the airflow temperature and velocity should be increased. Otherwise, the dehydration efficiency and effect are considered optimal, and the operation should be maintained while monitoring M. If M > Ms, the workpiece flow channel is considered damp, and the operation should be maintained. Otherwise, the workpiece flow channel is considered dry, and the operation should be terminated.

[0011] The dewatering process parameters of this invention are easy to control. The high-efficiency dewatering device used in conjunction with it has a reasonable structure and function, high working efficiency, and low cost. It improves the dewatering efficiency of the internal flow channel and the cleanliness and quality of the product. It is not limited by the ambient temperature and can adapt to dewatering operations in ambient temperatures below 0°C. The process parameters have excellent inheritance and iteration properties, high dewatering efficiency, good cleaning effect, and low device cost. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device's principle structure.

[0013] Figure 2 It is a control logic flowchart. Detailed Implementation

[0014] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0015] The structural principle of the device is as follows Figure 1 As shown, the air compressor 1, air tank 2, shut-off valve 3, filter 4, water separator 5, oil separator 7, air heater 8, and one-way valve 9 are connected in sequence by the connecting pipe 6. The air compressor 1 generates compressed air, which is sent to the air tank 2 for storage. The shut-off valve 3 is opened to send the compressed air to the filter 4 to obtain clean compressed air. The compressed air is then sent to the water separator 5 and the oil separator 7 to obtain dry and pure compressed air. The compressed air is then sent to the air heater 8 to heat up. The one-way valve 9 is opened to send the compressed air into the workpiece flow channel through the flow channel connector 10 to dry the residual water.

[0016] Temperature monitor 11 collects the airflow temperature at the outlet of check valve 9, flow monitor 12 collects the airflow velocity at the outlet of check valve 9, and micro-moisture tester 13 collects the air moisture content at other outlets of the workpiece flow channel. The airflow temperature, airflow velocity, and air moisture content are sent to the central controller 16 via signal transmission line 14. The working parameters are updated according to the temperature, flow rate, and moisture content, and control signals are generated. The signals are sent to air compressor 1, air heater 8, and check valve 9 via command transmission line 15 to adjust the air pressure, temperature, and flow rate in real time, thereby achieving water removal feedback regulation.

[0017] The filter 4 uses solid particles with a diameter of no more than 20 micrometers. The water remover 5 outputs compressed air with a micro-water value of less than 7000 ppmv. The output compressed air flow rate range is 0~50 m3 / min under standard atmospheric pressure. The air heater 8 heats the compressed air to a maximum of 80℃. The flow channel connector 10 is replaced with different models according to different workpiece flow channel interfaces.

[0018] Let M0 represent the air moisture content at other outlets of the workpiece flow channel at time t0, M1 represent the air moisture content at other outlets of the workpiece flow channel at time t1, and P represent the dehumidification efficiency of the workpiece flow channel. The water removal control logic flow is as follows: Figure 2 As shown.

[0019] The workpiece is raised to a height of about 1.5m. The diameter D and volume V of the workpiece flow channel are measured and calculated. The ambient temperature T and the air moisture value Ms are monitored. The flow channel connector 10 is connected to the air inlet of the workpiece flow channel. As the factors of workpiece and environmental conditions, the process parameter expert database is input to determine the initial temperature and airflow velocity of the compressed air generated by the dehydration device, or the initial temperature and airflow velocity of the air are manually set.

[0020] If the initial temperature and airflow velocity are too low, the dewatering efficiency and effect will be affected; conversely, they will waste energy and may even cause damage to the workpiece or injury to personnel.

[0021] After a period of trial operation, before the end of the trial operation, collect M0. If M0 ≤ Ms, the workpiece is determined to be dry and no dehydration is required. Otherwise, calculate the dehydration efficiency P. Calculate the dehydration efficiency Pt based on D, V, T, and Ms from the process parameter expert database. If 0 < P < Pt, it means M1 is greater than M0 and P < Pt. In this case, the dehydration efficiency and effect are deemed poor, and the airflow temperature and velocity should be increased. Otherwise, the dehydration efficiency and effect are deemed optimal, and operation should be maintained while monitoring M. If M > Ms, the workpiece flow channel is deemed damp, and operation should be maintained. Otherwise, the workpiece flow channel is deemed dry, and operation should be terminated.

[0022] Based on actual workpiece dehydration efficiency monitoring, it has a negative feedback adjustment function. By searching its own process parameter expert database, it dynamically optimizes and adjusts the compressed air temperature and flow rate during the operation of the device in real time, so as to achieve efficient and high-quality dehydration operation.

[0023] The process parameter expert database provides historical temperature and flow rate process parameters for highly reliable dewatering devices that ensure dewatering effect and efficiency for workpieces under different internal flow channel diameters, internal flow channel volumes, and ambient temperature conditions. These parameters can be iteratively updated, greatly improving the efficiency and effect of workpiece dewatering on-site and enabling the inheritance of excellent process parameters.

[0024] The above are embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A water removal device for a two-phase flow medium with a large-size, high-precision, complex flow channel, characterized in that, include: An air compressor, air tank, shut-off valve, filter, dehydrator, oil separator, air heater, and check valve are connected in sequence by connecting pipes. The air compressor generates compressed air, which is stored in the air tank. The shut-off valve is opened to send clean compressed air into the filter. The compressed air is then sent into the dehydrator and oil separator to obtain dry and pure compressed air. The compressed air is then sent into the air heater to heat up. The check valve is opened to send the compressed air into the workpiece flow channel through the flow channel connector to dry residual water.

2. The water removal device for a large-size, high-precision, complex flow channel in a two-phase flow medium according to claim 1, characterized in that, Also includes: The system includes a temperature monitor, a flow monitor, a moisture meter, and a signal transmission line. The temperature monitor collects the airflow temperature at the outlet of the one-way valve, the flow monitor collects the airflow velocity at the outlet of the one-way valve, and the moisture meter collects the air moisture content at other outlets of the workpiece flow channel. The signal transmission line sends the airflow temperature, airflow velocity, and air moisture content to the central controller. Based on the temperature, flow rate, and moisture content, the controller updates the operating parameters and generates control signals. These signals are then sent to the air compressor, air heater, and one-way valve via the command transmission line to adjust the air pressure, temperature, and flow rate in real time, achieving moisture removal feedback regulation.

3. The water removal device for large-size, high-precision, complex flow channels of two-phase flow media according to claim 2, characterized in that, Also includes: Let M0 represent the air moisture content at other outlets of the workpiece flow channel at time t0, M1 represent the air moisture content at other outlets of the workpiece flow channel at time t1, and P represent the dehumidification efficiency of the workpiece flow channel. .

4. The water removal device for a large-size, high-precision, complex flow channel in a two-phase flow medium according to claim 2, characterized in that, Also includes: The filter uses solid particles with a diameter of no more than 20 micrometers, the water content of the compressed air output by the dewatering device is less than 7000 ppmv, the flow rate of the output compressed air under standard atmospheric pressure is 0~50 m3 / min, the air heater heats the compressed air to a maximum of 80℃, and the flow channel connector is replaced with different models according to different workpiece flow channel interfaces.

5. A method for removing water from a large-size, high-precision, complex flow channel in a two-phase flow medium, characterized in that, The dewatering device for a large-size, high-precision, complex flow channel of a two-phase flow medium according to claim 3 includes: measuring and calculating the workpiece flow channel diameter D and flow channel volume V; monitoring the ambient temperature T and air moisture value Ms; connecting the flow channel connector to the air inlet of the workpiece flow channel; inputting the workpiece and environmental conditions into the process parameter expert database; determining the initial temperature and airflow velocity of the compressed air generated by the dewatering device, or manually setting the initial temperature and airflow velocity of the air; conducting a dewatering trial run for a period of time; before the end of the trial run, collecting M0; if M0 ≤ Ms, the workpiece is determined to be dry and dewatering is not required; otherwise, calculating the dewatering efficiency P; calculating the dewatering efficiency Pt based on D, V, T, and Ms in the process parameter expert database; if 0 < P < Pt, it indicates that M1 is greater than M0 and P < Pt, and the dewatering efficiency and effect are not good, so the airflow temperature and velocity should be increased; otherwise, the dewatering efficiency and effect are determined to be optimal, and the operation should be maintained; monitoring M; if M > Ms, the workpiece flow channel is determined to be damp, and the operation should be maintained; otherwise, the workpiece flow channel is determined to be dry, and the operation should be terminated.

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