CN111707558A - Micro-channel heat dissipation aluminum profile pressure resistance experiment device and experiment method - Google Patents
Micro-channel heat dissipation aluminum profile pressure resistance experiment device and experiment method Download PDFInfo
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- CN111707558A CN111707558A CN202010716569.3A CN202010716569A CN111707558A CN 111707558 A CN111707558 A CN 111707558A CN 202010716569 A CN202010716569 A CN 202010716569A CN 111707558 A CN111707558 A CN 111707558A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
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- G01N2203/0019—Compressive
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- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N2203/0202—Control of the test
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Abstract
The invention discloses a pressure-resistant experimental device and method for a micro-channel heat-dissipation aluminum profile, which comprises a gas-liquid pressurization system, a sealing system and a control system, wherein the gas-liquid pressurization system is connected with the sealing system through a pipeline; the gas-liquid pressurization system is connected with the sealing system and provides pressure required by the test for the micro-channel heat dissipation aluminum profile; the sealing system comprises a sealing ring and two horizontal clamping devices, wherein the two horizontal clamping devices are clamped at two ends of the microchannel heat dissipation aluminum profile and comprise a body, a plurality of sealing cones are arranged on the body, the sealing cones are inserted into the end parts of the microchannels of the corresponding microchannel heat dissipation aluminum profile, and the adjacent sealing cones are sealed through the sealing ring; a liquid channel is arranged in the sealing cone and is communicated with the gas-liquid pressurization system; the control system controls the whole device to realize the experiments of three modes of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion.
Description
Technical Field
The invention relates to a pressure-resistant experimental device, in particular to a micro-channel heat-dissipation aluminum profile pressure-resistant experimental device and an experimental method.
Background
With the development of the fields of air conditioners, signal base stations, metallurgy, chemical engineering, electric power, new energy automobiles and the like, the market of China puts higher requirements on the performance and the service life of high-power electronic components. At present, unstable performance caused by heat generation is the most important problem limiting the development of domestic high-power electronic components.
The heat dissipation modes of the high-power electronic component mainly include heat dissipation fin type natural convection heat dissipation, forced air cooling heat dissipation and refrigerant heat dissipation. The problems of large volume, low heat dissipation efficiency, unstable performance and the like exist in natural convection heat dissipation and forced air cooling heat dissipation, and the heat dissipation requirements of a high-power unit and domestic high-power electronic components with poor stability cannot be completely met. The refrigerant heat dissipation has the advantages of low cost, small volume, high heat dissipation efficiency, environmental protection, energy conservation and the like, and can effectively meet the heat dissipation requirements of high-power electronic components. Research shows that the heat dissipation efficiency of the micro-channel heat dissipation aluminum profile substrate adopting refrigerants such as R410a/R134a is about 10 times that of the traditional blade type heat sink, the volume of the micro-channel heat dissipation aluminum profile substrate is only about 1/5 of the traditional blade type heat sink, and the mounting space is greatly saved while the heat dissipation effect is improved.
The microchannel aluminum profile for cooling medium heat dissipation needs to bear high-pressure fluid impact irregularly in the use process, so that the aluminum profile is required to have higher and longer pressure resistance.
In order to meet the performance requirements, the micro-channel aluminum profile needs to be subjected to a pressure-resistant experimental test. According to actual use requirements in different fields, three modes of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion are required to be carried out on the micro-channel aluminum profile. The microchannel heat dissipation aluminum alloy section has the characteristics of a plurality of parallel channels, which provides higher requirements for a pressure-resistant experiment testing device, particularly the tightness of a clamping tool part of the microchannel heat dissipation aluminum alloy section, and the existing sealing device can not meet the requirements and does not have a special experiment system to carry out related experiments.
Disclosure of Invention
The invention provides a micro-channel heat dissipation aluminum profile pressure resistance experiment device, aiming at the problems in the existing micro-channel heat dissipation aluminum profile pressure resistance experiment. The method is characterized in that compressed air is used as a power source, a gas-liquid booster pump is used as a pressure source, the pressure of a driving air source is automatically controlled through a high-precision electric proportional valve, and the stepless regulation of the output hydraulic pressure is realized; the action frequency of the pump is controlled by controlling the air inflow of the air source, so that the output flow of the system is controlled. According to actual needs, the pressure boosting-blasting experiment, the pressure boosting-pressure maintaining-pressure releasing experiment and the pressure boosting-pressure maintaining-blasting experiment can be completed.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a pressure-resistant experimental device for a micro-channel heat-dissipation aluminum profile, which comprises a gas-liquid pressurization system, a sealing system and a control system; comprises a gas-liquid pressurization system, a sealing system and a control system; the gas-liquid pressurization system is connected with the sealing system and provides pressure required by the test for the micro-channel heat dissipation aluminum profile; the sealing system comprises a sealing ring and two horizontal clamping devices, wherein the two horizontal clamping devices are clamped at two ends of the microchannel heat dissipation aluminum profile and comprise a body, a plurality of sealing cones are arranged on the body, and the sealing cones are inserted into the end parts of the microchannels of the corresponding microchannel heat dissipation aluminum profiles; a liquid channel is arranged in the sealing cone and is connected with a gas-liquid pressurization system; the control system controls the whole device to realize the experiments of three modes of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion.
In a second aspect, the invention also provides a pressure-resistant experimental method for the micro-channel heat-dissipation aluminum profile, which comprises the following steps:
1) before starting, the horizontal clamping device is used for manually clamping the measured micro-channel heat dissipation aluminum profile, and a sealing ring is arranged between the aluminum profile and the horizontal clamping device for sealing.
2) Selecting one experimental mode of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion, setting pressure and time parameters, and starting the device.
3) The control system controls the driving gas to enter the gas-liquid booster pump sequentially through the gas inlet, the air filter, the straight-through electromagnetic valve and the proportional valve, and drives the booster pump to dynamically pressurize the liquid.
4) And the output high-pressure liquid enters a sealing system through a manual needle valve and an air-controlled pressurizing ball valve respectively to pressurize the micro-channel heat dissipation aluminum profile to be tested.
5) If the pressurization-explosion mode is selected, the gas-liquid booster pump continuously pressurizes the liquid until the test object is exploded; if a pressurization-pressure maintaining-pressure relief mode is selected, the gas-liquid booster pump stops pressurizing and starts timing when liquid is pressurized to a set pressure, and when the timing time reaches the set time, pressure relief is carried out on the system; if the pressurization-pressure maintaining-blasting mode is selected, the gas-liquid booster pump stops pressurizing when the liquid is pressurized to the set pressure, and enters a pressure maintaining state until the test object is blasted.
The invention has the beneficial effects that:
1. the pressure resistance experiment testing device provided by the invention adopts double sealing of the sealing ring and the sealing cone, the liquid channel on the horizontal clamping device is designed into a cone structure with a certain angle, the sealing cone is inserted into the micro-channel of the micro-channel heat dissipation aluminum alloy section bar, the clamping force of the horizontal clamping device is utilized to enable the micro-channel to generate certain plastic deformation, the double sealing of the sealing ring and the cone surface is realized, and the sealing performance of the integral structure of the micro-channel heat dissipation aluminum alloy section bar is ensured.
2. The outlet part of the booster pump valve body of the equipment supercharging system adopts a high-pressure non-leakage one-way valve, so that pressure drop can not be generated theoretically, but the pressure relief problem of a quick connector and the like is considered, the equipment is provided with an automatic pressure maintaining and supplementing function, and when pressure drop is generated, the supercharging system can be automatically started to supplement pressure.
3. In order to improve the safety and the service life of equipment, a protection pipeline is connected in parallel to an experimental pipeline of the equipment, and an electromagnetic overflow valve, a pressure gauge and a pressure reducing valve are respectively installed on the protection pipeline. When the pressure of the experimental pipeline is too high, the control system controls the electromagnetic overflow valve to act, and the experimental device is protected from overvoltage.
4. The invention uses compressed air as a power source, uses a gas-liquid booster pump as a pressure source, and automatically controls the pressure of a driving air source through a high-precision electric proportional valve to realize the stepless regulation of the output hydraulic pressure; the action frequency of the pump is controlled by controlling the air inflow of the air source, so that the output flow of the system is controlled.
5. According to actual needs, the pressure boosting-blasting experiment, the pressure boosting-pressure maintaining-pressure releasing experiment and the pressure boosting-pressure maintaining-blasting experiment can be completed. The whole device can effectively meet the pressure resistance test requirement of the microchannel refrigerant heat dissipation product, and the test result has more visual feedback on the performance and the service life of the microchannel heat dissipation product.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a structural diagram of a pressure-resistant experimental device for a micro-channel heat-dissipation aluminum profile of the invention;
FIG. 2 is a sealing structure diagram of a micro-channel heat dissipation aluminum alloy profile pressure resistance experiment testing device of the present invention;
the device comprises an air inlet 1, an air filter 2, a straight-through electromagnetic valve 3, a proportional valve 4, a booster pump 5, a silencer 6, a pressure sensor 7, a pressure gauge 8, a pressure gauge 9, a front manual needle valve 10, a pneumatic control pressurizing ball valve 11, an electromagnetic overflow valve 12, a pressure reducing valve 13, a micro-channel heat dissipation aluminum profile 15, a sealing ring 15, a horizontal clamp 16, a pneumatic control pressure relief ball valve 17, a buffer 18, a test chamber 19, a rear manual needle valve 20, a buffer 21, a liquid filter 22, a liquid filter 23, a liquid filter 24, a liquid supplementing port 25, a floating ball liquid level meter 26, a liquid storage tank 27, a micro-channel 28 and a sealing cone 29.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
as introduced by the background art, the defects in the prior art are that in order to solve the technical problems, the invention provides a pressure-resistant experimental device for a micro-channel heat-dissipation aluminum profile.
In a typical embodiment of the present invention, as shown in fig. 1 and fig. 2, the micro-channel heat dissipation aluminum profile pressure-resistant experimental apparatus disclosed in this embodiment mainly includes a gas-liquid pressurization system, a sealing system and a control system;
the gas-liquid booster system mainly comprises an air inlet, an air filter, a straight-through electromagnetic valve, a proportional valve, a gas-liquid booster pump and a silencer which are sequentially connected, wherein the gas-liquid booster pump is a core component of the booster system, and the driving air pressure of the booster pump is adjusted through a high-precision electric proportional valve so as to control the output pressure of the booster pump;
the sealing system comprises microchannel aluminium alloy, sealing washer and horizontal binding clasp, and manual operation utilizes horizontal binding clasp to press from both sides the aluminium alloy that surveys before the experiment, places the sealing washer between aluminium alloy and the horizontal binding clasp and seals.
The control system is the control core of the device, can control the corresponding valve to act to realize three modes of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion experiments, displays parameters such as pressurization time, current pressure, explosion pressure and the like, and can finish the storage and printing of experimental results.
As shown in fig. 1, the micro-channel heat dissipation aluminum profile pressure resistance experiment device mainly comprises an air inlet 1, an air filter 2, a straight-through electromagnetic valve 3, a proportional valve 4, a booster pump 5, a silencer 6, a pressure sensor 7, a pressure gauge 8, a pressure gauge 9, a front manual needle valve 10, a pneumatic control pressurizing ball valve 11, an electromagnetic overflow valve 12, a pressure reducing valve 13, a micro-channel heat dissipation aluminum profile 14, a sealing ring 15, a horizontal clamping device 16, a pneumatic control pressure relief ball valve 17, a buffer 18, a test cabin 19, a rear manual needle valve 20, a buffer 21, a liquid filter 2, a liquid filter 23, a liquid filter 24, a liquid supplementing port 25, a floating ball liquid level meter 26 and a liquid storage tank 27.
The air inlet 1, the air filter 2, the straight-through electromagnetic valve 3, the proportional valve 4 and the booster pump 5 are connected in sequence through high-pressure seamless steel pipes; the booster pump 5 is provided with a silencer 6;
the inlet of the booster pump 5 is connected with the liquid filter 23 and the liquid storage tank 27 in series; the liquid in the liquid storage tank 27 enters the booster pump 5 after being filtered by the liquid filter 23;
the outlet of the booster pump 5 is a test pipeline and a protection pipeline which are connected in parallel, wherein a pressure sensor 7, a pressure gauge 8, a preposed manual control needle valve 10 and a pneumatic control pressurizing ball valve 11 are sequentially arranged on the test pipeline; in order to improve the safety of the testing device, a front manual needle valve 10 and a rear manual needle valve 20 are arranged on a testing pipeline, and during testing, the front manual needle valve 10 is opened and the rear manual needle valve 20 is closed; when the experimental testing device is too high in pressure or cannot be automatically stopped due to the fact that an over-problem occurs in the testing process, the front manual needle valve 10 is manually closed, and the rear manual needle valve 20 is opened.
Because the test pipeline is in a high-pressure state during the pressure resistance experiment test, in order to reduce the impact of high-pressure liquid in the pipeline on the device when the test device is decompressed, a buffer 18 and a buffer 21 are respectively arranged behind the pneumatic control pressure relief ball valve 17 and the rear manual control needle valve 20.
The microchannel heat dissipation aluminum profile 14 to be tested is internally provided with a plurality of parallel microchannels 28, two ends of the microchannel heat dissipation aluminum profile 14 are respectively provided with a horizontal clamping device 16, the horizontal clamping device 16 is provided with a plurality of sealing cones 29, one sealing cone 29 corresponds to one microchannel 28, a liquid channel is arranged in the sealing cone 29, the outer surface of the sealing cone 29 is inserted into the microchannel 28 for conical surface sealing, the liquid channel is formed inside, the adjacent sealing cones 29 are sealed through a sealing ring 15, the sealing cone 29 at the left end is connected with the left side of a test pipeline, and the sealing cone 29 at the right end is connected with the right side of the test pipeline. The pressure resistance experiment testing device adopts double sealing of the sealing ring 15 and the sealing cone 29, the liquid channel on the horizontal clamping device 16 is designed to be a cone structure with a certain angle, the sealing cone 29 is inserted into the micro-channel 28 of the micro-channel heat dissipation aluminum alloy section bar 14, the micro-channel 28 generates certain plastic deformation by using the clamping force of the horizontal clamping device 16, double sealing of the sealing ring and the cone surface is realized, and the sealing performance of the integral structure of the micro-channel heat dissipation aluminum alloy section bar 14 is ensured.
Furthermore, the tail end of the test pipeline is designed by adopting a parallel pipeline, one pipeline is provided with a pneumatic control pressure relief ball valve 17, and the other pipeline is provided with a rear manual control needle valve 20; because the test pipeline is in a high-pressure state during the pressure resistance experiment test, in order to reduce the impact of high-pressure liquid in the pipeline on the device when the test device is decompressed, a buffer 18 and a buffer 21 are respectively arranged behind the pneumatic control pressure relief ball valve 17 and the rear manual control needle valve 20.
The pressure sensor 7 and the pressure gauge 8 in the test pipeline are used for detecting the pressure on the test pipeline; the front manual control needle valve 10, the rear manual control needle valve 20, the pneumatic control pressurizing ball valve 11 and the pneumatic control pressure relief ball valve 17 are used for controlling the pressure on a test pipeline; the horizontal clamping device 16 mainly functions to clamp and seal the microchannel heat dissipation aluminum profile 14.
An electromagnetic overflow valve 12, a pressure gauge 9, a pressure reducing valve 13 and a liquid filter 24 are arranged on the protection pipeline; the main purpose of the protection circuit is to protect the entire test system.
Further, the invention also seals the horizontal clamping device 16, the sealing ring 15, the micro-channel heat-dissipation aluminum profile 14, the air-controlled pressure-relief ball valve 17, the buffer 18, the rear manual control needle valve 20 and the buffer 21 through a test chamber 19, and the test chamber 19 is connected with a liquid storage tank 27 through a liquid filter 22; the liquid storage tank 27 is designed with a liquid supplementing port 25 and a floating ball liquid level meter 26. The purpose of placing the test chamber closed is also based on safety considerations.
The whole device is arranged on the main body frame, and the main body frame part is formed by welding hollow carbon steel square steel, so that the equipment has enough rigidity and bearing capacity.
Further, the driving pressure range of the air inlet 1 is as follows: 0.5 to 0.8 MPa. The measuring range of the pressure sensor 7 is as follows: 0 to 50 MPa. Control accuracy of the pressure sensor 7: 0.5% FS. The measuring ranges of the pressure gauge 8 and the pressure gauge 9 are as follows: 0 to 50 MPa. The pressure display precision of the pressure gauge 8 and the pressure gauge 9 is as follows: 0.01 MPa. The hydraulic cylinder diameter size of the booster pump 5 is as follows: phi 100 mm. The output pressure range of the booster pump 5 is as follows: 0 to 40 MPa. The pipeline all adopt nonrust steel pipe, pipe diameter size scope: phi 6 mm-8 mm. The liquid can be saponification liquid or water added with an antirust agent.
The pressure-resistant experiment of the common microchannel heat-dissipation aluminum profile can be divided into a boosting-blasting experiment, a boosting-pressure maintaining-pressure releasing experiment and a boosting-pressure maintaining-blasting experiment, and the three experiments are respectively explained as follows:
1. the boosting-blasting experimental process is as follows:
1) before starting, a sealing ring 15 is arranged between the microchannel heat dissipation aluminum profile 14 and a horizontal clamping device 16, the microchannel heat dissipation aluminum profile 14 is clamped and sealed by the horizontal clamping device 16, and the manual needle valve 10 is opened.
2) And selecting a boosting-blasting experiment mode and starting equipment.
3) The control system controls driving gas to enter the gas-liquid booster pump 5 sequentially through the air inlet 1, the air filter 2, the straight-through electromagnetic valve 3 and the proportional valve 4, the booster pump 5 is driven to pressurize liquid, and meanwhile, the pneumatic control pressurizing ball valve 11 is controlled to be opened, and the pneumatic control pressure relief ball valve 17 is controlled to be closed.
4) The control system controls the gas-liquid booster pump 5 to continuously boost until the microchannel heat dissipation aluminum profile 14 explodes, the pressure sensor 7 is used for detecting and displaying the liquid pressure in the test pipeline in real time in the test process, and a tester can also read the pressure of the test pipeline from the pressure gauge 8.
5) And (3) judging by using a pressure drop parameter delta P of the test pipeline as a blasting condition, if the delta P is set to be 2MPa, when the control system detects that the pressure drop of the liquid in the test pipeline is more than or equal to 2MPa, judging that the micro-channel heat-dissipation aluminum profile 14 is blasted by the system, controlling the pneumatic control pressurizing ball valve 11 to be closed by the system, opening the pneumatic control pressure relief ball valve 17, and allowing the liquid in the test pipeline to flow into the test cabin 19 through the buffer 18 and return to the liquid storage tank 27 through the liquid filter 22.
6) And when the test is finished, the control system outputs a corresponding curve of the test pressure and the test time.
7) In the testing process, the upper limit of the pipeline pressure can be set, when the pipeline pressure reaches the set upper limit, the electromagnetic overflow valve 12 on the pipeline is protected to act, and liquid flows into the liquid storage tank 27 through the electromagnetic overflow valve 12, the pressure reducing valve 13 and the liquid filter 24 respectively, so that the overpressure protection of the whole device is realized.
2. The experimental process of pressure increasing, pressure maintaining and pressure releasing is as follows, wherein the experimental process is illustrated by taking pressure of 10MPa and pressure maintaining for 24h as an example:
1) before starting, a sealing ring 15 is arranged between the microchannel heat dissipation aluminum profile 14 and a horizontal clamping device 16, the microchannel heat dissipation aluminum profile 14 is clamped and sealed by the horizontal clamping device 16, and the manual needle valve 10 is opened.
2) And selecting a boosting-pressure maintaining-pressure releasing experimental mode, setting the pressure to be 10MPa and the pressure maintaining time to be 24h, and starting the equipment.
3) The control system controls driving gas to enter the gas-liquid booster pump 5 sequentially through the air inlet 1, the air filter 2, the straight-through electromagnetic valve 3 and the proportional valve 4, the booster pump 5 is driven to pressurize liquid, and meanwhile, the pneumatic control pressurizing ball valve 11 is controlled to be opened, and the pneumatic control pressure relief ball valve 17 is controlled to be closed.
4) When the pressure sensor 7 detects that the liquid pressure in the test pipeline reaches 10MPa, the system controls the booster pump 5 to stop pressurizing and starts timing.
5) When the timing time reaches 24h, the system controls the pneumatic control pressurizing ball valve 11 to be closed, the pneumatic control pressure relief ball valve 17 to be opened, and high-pressure liquid in the test pipeline flows into the test cabin 19 through the buffer 18 and returns to the liquid storage tank 27 through the liquid filter 22.
6) And when the test is finished, the control system outputs a corresponding curve of the test pressure and the test time.
7) Considering the pressure relief problem such as quick-operation joint, equipment is equipped with automatic pressurize pressure supplement function, and when producing the pressure drop in the testing process, the system control booster pump 5 action is carried out the pressure to the test tube way.
8) In the testing process, the upper limit of the pipeline pressure can be set, when the pipeline pressure reaches the set upper limit, the electromagnetic overflow valve 12 on the pipeline is protected to act, and liquid flows into the liquid storage tank 27 through the electromagnetic overflow valve 12, the pressure reducing valve 13 and the liquid filter 24 respectively, so that the overpressure protection of the whole device is realized.
3. The experimental method of pressure rise, pressure maintaining and blasting is as follows, wherein the pressure in the experiment is 10MPa until blasting is taken as an example to explain the experimental method:
1) before starting, a sealing ring 15 is arranged between the microchannel heat dissipation aluminum profile 14 and a horizontal clamping device 16, the microchannel heat dissipation aluminum profile 14 is clamped and sealed by the horizontal clamping device 16, and the manual needle valve 10 is opened.
2) And selecting a boosting-pressure maintaining-blasting experiment mode, setting the pressure to be 10MPa and the pressure maintaining time to be + ∞, and starting the equipment.
3) The control system controls driving gas to enter the gas-liquid booster pump 5 sequentially through the air inlet 1, the air filter 2, the straight-through electromagnetic valve 3 and the proportional valve 4, the booster pump 5 is driven to pressurize liquid, and meanwhile, the pneumatic control pressurizing ball valve 11 is controlled to be opened, and the pneumatic control pressure relief ball valve 17 is controlled to be closed.
4) When the pressure sensor 7 detects that the liquid pressure in the test pipeline reaches 10MPa, the system controls the booster pump 5 to stop pressurizing and starts timing.
5) And (3) judging by using a pressure drop parameter delta P of the test pipeline as a blasting condition, if the delta P is set to be 2MPa, when the control system detects that the pressure drop of the liquid in the test pipeline is more than or equal to 2MPa, judging that the micro-channel heat-dissipation aluminum profile 14 is blasted by the system, controlling the pneumatic control pressurizing ball valve 11 to be closed by the system, opening the pneumatic control pressure relief ball valve 17, and allowing the liquid in the test pipeline to flow into the test cabin 19 through the buffer 18 and return to the liquid storage tank 27 through the liquid filter 22.
6) And when the test is finished, the control system outputs a corresponding curve of the test pressure and the test time.
7) Considering the pressure relief problem such as quick-operation joint, equipment is equipped with automatic pressurize pressure supplement function, and when producing the pressure drop in the testing process, the system control booster pump 5 action is carried out the pressure to the test tube way.
8) In the testing process, the upper limit of the pipeline pressure can be set, when the pipeline pressure reaches the set upper limit, the electromagnetic overflow valve 12 on the pipeline is protected to act, and liquid flows into the liquid storage tank 27 through the electromagnetic overflow valve 12, the pressure reducing valve 13 and the liquid filter 24 respectively, so that the overpressure protection of the whole device is realized.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A pressure-resistant experimental device for a micro-channel heat-dissipation aluminum profile is characterized by comprising a gas-liquid pressurization system, a sealing system and a control system; the gas-liquid pressurization system is connected with the sealing system and provides pressure required by the test for the micro-channel heat dissipation aluminum profile; the sealing system comprises a sealing ring and two horizontal clamping devices, wherein the two horizontal clamping devices are clamped at two ends of the microchannel heat dissipation aluminum profile and comprise a body, a plurality of sealing cones are arranged on the body, the sealing cones are inserted into the end parts of the microchannels of the corresponding microchannel heat dissipation aluminum profile, and the adjacent sealing cones are sealed through the sealing ring; a liquid channel is arranged in the sealing cone and is communicated with the gas-liquid pressurization system; the control system controls the whole device to realize the experiments of three modes of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion.
2. The micro-channel heat dissipation aluminum profile pressure-resistant experimental device as claimed in claim 1, wherein the gas-liquid pressurization system comprises a gas inlet, an air filter, a straight-through electromagnetic valve, a proportional valve and a booster pump which are connected in sequence; the inlet of the booster pump is connected with the liquid filter and the liquid storage tank in series; the outlet of the booster pump is a test pipeline and a protection pipeline which are connected in parallel.
3. The micro-channel heat dissipation aluminum profile pressure-resistant experimental device as claimed in claim 1, wherein the test pipeline comprises a first test pipeline, a second test pipeline and a third test pipeline, and the first test pipeline is connected with an inlet of the booster pump and an inlet end of the sealing system; the second test pipeline and the third test pipeline are installed at the outlet end of the sealing system in parallel.
4. The pressure-resistant experimental device for the micro-channel heat dissipation aluminum profile as claimed in claim 3, wherein the first testing pipeline is provided with a pressure sensor, a pressure gauge, a manual control needle valve and a pneumatic control pressurizing ball valve.
5. The micro-channel heat dissipation aluminum profile pressure-resistant experimental device as claimed in claim 3, wherein the second testing pipeline is provided with a pneumatic control pressurizing ball valve and a buffer.
6. The pressure-resistant experimental device for the micro-channel heat dissipation aluminum profile as claimed in claim 3, wherein the second test pipeline is provided with a manual control needle valve and a buffer.
7. The pressure-resistant experimental device for the micro-channel heat-dissipation aluminum profiles as claimed in claim 3, wherein the sealing system, the second test pipeline and the third test pipeline are installed in a test chamber, and the test chamber is connected with the liquid storage tank through a liquid filter.
8. The pressure-resistant experimental device for the microchannel heat dissipation aluminum profiles as claimed in claim 1, wherein an electromagnetic overflow valve, a pressure gauge, a pressure reducing valve and a liquid filter are installed on the protection pipeline.
9. The pressure-resistant experimental device for the micro-channel heat-dissipation aluminum profiles as claimed in claim 1, wherein the liquid storage tank is designed with a liquid supplementing port and a floating ball liquid level meter.
10. An experimental method of the micro-channel heat dissipation aluminum profile pressure-resistant experimental device based on any one of claims 1-9 is characterized by comprising the following steps:
1) before starting, a horizontal clamping device is used for manually clamping the tested micro-channel heat dissipation aluminum profile, and a sealing ring is arranged between the aluminum profile and the horizontal clamping device for sealing;
2) selecting one experimental mode of pressurization-explosion, pressurization-pressure maintaining-pressure relief and pressurization-pressure maintaining-explosion, setting pressure and time parameters, and starting the device;
3) the control system controls driving gas to enter the gas-liquid booster pump and drives the booster pump to dynamically pressurize liquid;
4) the output high-pressure liquid respectively enters a sealing system to pressurize the micro-channel heat dissipation aluminum profile to be tested;
5) if the pressurization-explosion mode is selected, the gas-liquid booster pump continuously pressurizes the liquid until the test object is exploded; if a pressurization-pressure maintaining-pressure relief mode is selected, the gas-liquid booster pump stops pressurizing and starts timing when liquid is pressurized to a set pressure, and when the timing time reaches the set time, pressure relief is carried out on the system; if the pressurization-pressure maintaining-blasting mode is selected, the gas-liquid booster pump stops pressurizing when the liquid is pressurized to the set pressure, and enters a pressure maintaining state until the test object is blasted.
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