CN112303489A - Constant-temperature electric heating rapid inflation method and system for novel environment-friendly insulating medium - Google Patents

Constant-temperature electric heating rapid inflation method and system for novel environment-friendly insulating medium Download PDF

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Publication number
CN112303489A
CN112303489A CN202011158059.5A CN202011158059A CN112303489A CN 112303489 A CN112303489 A CN 112303489A CN 202011158059 A CN202011158059 A CN 202011158059A CN 112303489 A CN112303489 A CN 112303489A
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gas
heating
inflation
glass bottle
air
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Chinese (zh)
Inventor
饶夏锦
黎大健
朱立平
夏小飞
苏毅
芦宇峰
崔志美
孙大伟
龚文兰
彭博雅
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Electric Power Research Institute of Guangxi Power Grid Co Ltd
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Electric Power Research Institute of Guangxi Power Grid Co Ltd
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Priority to CN202011158059.5A priority Critical patent/CN112303489A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
    • F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/013—Single phase liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a constant-temperature electric heating rapid inflation method and a system for a novel environment-friendly insulating medium, wherein the method comprises the following steps: carrying out air tightness inspection on the device; washing the device with gas; and (5) inflating. The system comprises the following components: the air tightness module is used for carrying out air tightness inspection on the device; the gas washing module is used for washing gas for the device; the inflation module is used for inflating. The constant-temperature electric heating rapid inflation method and system for the novel environment-friendly insulating medium provided by the embodiment of the invention have the advantages of low working power, electric energy saving and low cost, and solve the problem of conveying C6F12O mixed gas.

Description

Constant-temperature electric heating rapid inflation method and system for novel environment-friendly insulating medium
Technical Field
The invention relates to the research field of novel environment-friendly media, in particular to a constant-temperature electric heating rapid inflation method and system for novel environment-friendly insulating media.
Background
SF6Because of its good insulating and arc-extinguishing properties, it dominates in electrical equipment, and its annual usage amount is up to about 10000 tons, for example, it is used as an insulating medium for Gas Insulated Switchgear (GIS), current transformer and other equipment. However, SF6 is a very greenhouse gas, and has a Global Warming Potential (GWP) of CO223500 times of the total weight of the product, especially the atmospheric service life of the product is up to 3200 years, which can bring great adverse effect to the environment and destroy the environment generated by human beings. Therefore, alternative SF were sought6The novel environment-friendly gas with gas as an insulating medium is widely researched by domestic and foreign scholars.
In recent years, a number of new environmentally friendly gases (e.g., C-C)4F8、CF3I、C4F7N、C5F10O、C6F12O, etc.) becomes the key and difficult point of the research of scholars at home and abroad, and the research result shows that the material has higher insulating property and lower global warming potential and has the potential of being applied to gas insulating equipment. But found C in the study5F10O、C6F12Liquefaction of O or the likeAt a higher temperature, especially C6F12The liquefaction temperature of O is as high as 49 ℃, and the O is liquid at normal temperature, so that the inflation link in the experimental process has some problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a constant-temperature electric heating rapid inflation method and a constant-temperature electric heating rapid inflation system for a novel environment-friendly insulating medium, wherein the constant-temperature electric heating rapid inflation method and the constant-temperature electric heating rapid inflation system are used for carrying out air tightness inspection on a device and removing impurities, and liquid C is heated by a heating sheet to be enabled to be liquid6F12O vaporization, control of C based on mass flow control6F12The mixing ratio of O.
In order to solve the technical problem, an embodiment of the present invention provides a constant temperature electric heating rapid inflation method for a novel environment-friendly insulating medium, including: carrying out air tightness inspection on the device; washing the device with gas; and (5) inflating.
The performing of the airtightness inspection on the apparatus includes: the air charging pipeline penetrates out of the bottle cap to be fixed through the sealing gasket, the rubber ring penetrates through the air charging pipeline to connect the air charging pipeline with the glass bottle, the bottle cap is rotated to seal the glass bottle, the rubber ring is used for sealing from the inside of the bottle mouth, and the sealing gasket is used for sealing at the bottle cap.
The performing of the airtightness inspection on the apparatus includes: the air charging pipeline outside the glass bottle is connected with a switch valve, the outside of the switch valve can be connected with a three-way adapter, the other two interfaces are respectively connected with an air pressure meter and a vacuum pump, the vacuum pump is used for vacuumizing the air chamber, if the air pressure meter is stable after standing for 30 minutes, the vacuum airtightness of the device is good, otherwise, the sealing ports need to be checked one by one, and the air tightness of the air charging device is good.
The scrubbing of the device comprises: filling background gas into the experimental air chamber and pumping out by using a vacuum pump, repeating for 3 times, and filling C required by the experiment into the air chamber after cleaning6F12And O gas, and simultaneously connecting the gas-filled pipeline with the test gas chamber by means of the adapter.
The inflation comprises: filling glass bottle with C6F12O liquid is reserved; the hemispherical shell can be opened towards two sides by pulling the buttonThen will contain C6F12The glass bottle of O is placed on heating device's base, closes the hemisphere shell and buckles the button, and the cylindrical hole groove in the middle of can block the bottle lid of glass bottle, fixes aerating device.
The inflating comprises: heating, rapidly heating PTC aluminum shell heating plate to 70 deg.C, maintaining surface temperature, and heating C in glass bottle6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12The O is vaporized.
The inflating comprises: the inflation process is completed based on a mass flow control method; at C6F12And in the process that the O and the background gas enter the experiment gas chamber, the flow of the two gases is set and monitored in real time by virtue of the mass flow controller.
The mass flow control method includes: mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure BDA0002743385020000021
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements.
A constant-temperature electric heating quick inflation system for novel environment-friendly insulating media comprises: the air tightness module is used for carrying out air tightness inspection on the device; the gas washing module is used for washing gas for the device; the inflation module is used for inflating.
The inflation comprises: heating, rapidly heating PTC aluminum shell heating plate to 70 deg.C, maintaining surface temperature, and heating C in glass bottle6F12O liquidThe temperature is raised to 49 ℃ by heating, thus ensuring C6F12O is vaporized;
the inflation process is completed based on a mass flow control method;
at C6F12In the process that O and background gas enter an experimental gas chamber, the flow of the two gases is set and monitored in real time by means of a mass flow controller;
mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure BDA0002743385020000031
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements.
The embodiment of the invention provides a constant-temperature electric heating rapid inflation method and system for a novel environment-friendly insulating medium, which are used for carrying out air tightness inspection on a device and removing impurities, and heating a heating sheet to enable liquid C6F12O vaporization, control of C based on mass flow control6F12The mixing ratio of O, and conveying to a test device; a constant-temperature electric heating quick inflation method and system for novel environment-friendly insulating media are low in working power, electric energy is saved, cost is low, and C conveying is achieved6F12O mixed gas.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a constant-temperature electric heating rapid inflation method for a novel environment-friendly insulating medium.
Fig. 2 is a schematic diagram of a constant-temperature electric heating quick inflating device for a novel environment-friendly insulating medium.
FIG. 3 is a schematic view of a constant temperature electric heating quick inflator with a novel environment-friendly insulating medium.
Fig. 4 is a schematic structural diagram of a constant-temperature electric heating rapid inflation system of a novel environment-friendly insulating medium.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1, fig. 1 is a schematic flow chart of a constant temperature electric heating rapid inflation method for a novel environment-friendly insulating medium.
As shown in fig. 1, a constant temperature electric heating fast aeration method for a novel environment-friendly insulating medium is completed by a constant temperature electric heating fast aeration device based on a novel environment-friendly insulating medium, and the method comprises the following steps:
s101, carrying out air tightness inspection on the device;
s102, washing the device with gas;
and S103, inflating.
The performing of the airtightness inspection on the apparatus includes: the air charging pipeline penetrates out of the bottle cap to be fixed through the sealing gasket, the rubber ring penetrates through the air charging pipeline to connect the air charging pipeline with the glass bottle, the bottle cap is rotated to seal the glass bottle, the rubber ring is used for sealing from the inside of the bottle mouth, and the sealing gasket is used for sealing at the bottle cap.
The performing of the airtightness inspection on the apparatus includes: the air charging pipeline outside the glass bottle is connected with a switch valve, the outside of the switch valve can be connected with a three-way adapter, the other two interfaces are respectively connected with an air pressure meter and a vacuum pump, the vacuum pump is used for vacuumizing the air chamber, if the air pressure meter is stable after standing for 30 minutes, the vacuum airtightness of the device is good, otherwise, the sealing ports need to be checked one by one, and the air tightness of the air charging device is good.
The scrubbing of the device comprises: filling background gas into the experimental air chamber and pumping out by using a vacuum pump, repeating for 3 times, and filling C required by the experiment into the air chamber after cleaning6F12And O gas, and simultaneously connecting the gas-filled pipeline with the test gas chamber by means of the adapter.
The inflation comprises: filling glass bottle with C6F12O liquid is reserved; the button is pushed to open the hemispherical shell towards two sides, and then the container C is placed6F12The glass bottle of O is placed on heating device's base, closes the hemisphere shell and buckles the button, and the cylindrical hole groove in the middle of can block the bottle lid of glass bottle, fixes aerating device.
The inflation comprises: heating, rapidly heating PTC aluminum shell heating plate to 70 deg.C, maintaining surface temperature, and heating C in glass bottle6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12The O is vaporized.
The inflation comprises: the inflation process is completed based on a mass flow control method; at C6F12And in the process that the O and the background gas enter the experiment gas chamber, the flow of the two gases is set and monitored in real time by virtue of the mass flow controller.
The mass flow control method includes: mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure BDA0002743385020000051
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements. A
Referring to fig. 2 and 3, fig. 2 is a schematic view of a constant temperature electric heating quick inflator with a novel environment-friendly insulating medium, and fig. 3 is a schematic view of an inflator with a constant temperature electric heating quick inflator with a novel environment-friendly insulating medium.
As shown in fig. 2, the electric heating device and the air charging device are included, the electric heating device mainly includes a switch 1, an electric plug 2, a plastic shell 3, a negative temperature coefficient thermistor 4, an indicator lamp 5, a current limiting resistor 6, a PTC aluminum shell heating plate 12 and an automatic power-off control module 13; as shown in fig. 3, the inflation device comprises a glass inflation bottle 11, a bottle cap 10, a sealing gasket 14, a rubber ring 15, an inflation tube 8, a switch valve 7 and an adapter 16.
And (6) checking the air tightness.
As shown in fig. 3, in order to inflate the device, the inflation tube 8 is first fixed by penetrating through the bottle cap through the sealing gasket 14, the rubber ring 15 is connected with the glass bottle after penetrating through the inflation tube 8, and the bottle cap is rotated to seal the glass bottle, the rubber ring 15 is used for sealing from the inside of the bottle mouth, and the sealing gasket is used for sealing at the bottle cap. The air charging pipeline outside the glass bottle is connected with a switch valve 7, the switch valve 7 can be connected with a three-way adapter, the other two sides are respectively connected with an air pressure meter and a vacuum pump, the vacuum pump is used for vacuumizing the air chamber, if the air pressure meter is stable after standing for 30 minutes, the vacuum airtightness of the device is good, otherwise, the sealing ports need to be checked one by one, and the air tightness of the air charging device is good.
And (5) washing the gas.
Filling background gas into the experimental air chamber and pumping out the background gas by using a vacuum pump, repeating the operation for 3 times, and filling novel environment-friendly gas required by the experiment into the air chamber after the cleaning is finished, namely C6F12O gas, and simultaneously inflating the pipeline by means of the adapterIs connected with a test air chamber.
And (6) inflating.
Firstly, filling C into a glass bottle6F12And O liquid is reserved. One side of a button at the hemispherical top of the constant-temperature electric heating device is fixed at one side of the 9, and the other side of the button can be hung and buckled at the other side of the 9. The button is turned to open the hemispherical shell 9 to two sides, and then the container C is placed6F12The glass bottle of O is placed on the base of the heating device, the hemispherical shell 9 is closed and the button is buckled, the cylindrical hole groove in the middle can clamp the bottle cap of the glass bottle, and the inflating device is fixed.
After the inflation device is fixed, the plug 2 of the heating device is connected with a power supply, the electric wire connected with the inside of the plug 2 is long, the power supply can be pulled out of the plug during use, the plug can be retracted to the plastic shell body 3 after use, and the electric wire can be placed in the plastic shell body and can be conveniently collected when not used at ordinary times. The plastic shell body 3 can be used for placing electric wires, packaging heating elements and placing and fixing the inflator. Turning on the control switch 1 of the electric heating device, lighting the indicator lamp 5, starting heating, rapidly heating the PTC aluminum shell heating plate 12, maintaining the surface temperature unchanged when reaching about 70 ℃, and heating the C in the glass bottle6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12The O is vaporized. The vaporized C is in a vacuum state in the test air chamber6F12The O vapor can naturally enter the test chamber through the inflation pipe 8 by utilizing the air pressure difference.
In order to ensure the precision of the configured mixed gas, the whole inflation process is completed based on a mass flow control method. At C6F12And in the process that the O and the background gas enter the experiment gas chamber, the flow of the two gases is set and monitored in real time by virtue of the mass flow controller. Mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure BDA0002743385020000071
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements. And when the total pressure of the experimental air chamber reaches the target pressure P, closing an air inlet valve of the air chamber, and simultaneously closing the valve 7 and a valve of the background gas inflation bottle.
Further illustrated is the PTC aluminum housing heater chip 12 which begins to heat up rapidly after power is applied and begins to heat up and maintain this temperature when it reaches about 70 ℃. The glass bottle above the PTC aluminum housing heating plate 12 is heated and further gives C in the glass gas-filled bottle 116F12Heating the O liquid to make C in the bottle6F12The vaporization starts after the O liquid temperature reaches the boiling point of 49 c. The PTC aluminum shell heating plate has good heat-conducting property, high efficiency, safety and reliability.
Further, the selected PTC aluminum housing heater chip has a size smaller than the size of the bottom of the gas cylinder housing 11. The negative temperature coefficient thermistor 4 is arranged beside the PTC aluminum shell heating sheet 12, and can be contacted with the bottom of the glass gas charging bottle 11 after being placed on the glass gas charging bottle for sensing the temperature change of the bottom of the glass gas charging bottle 11, and the resistance of the thermistor changes along with the temperature. When C in the glass gas-filled bottle 116F12Compared with the temperature of the glass bottle wall at the position of the negative temperature coefficient thermistor 4 after the O liquid is completely gasified, the temperature of the glass bottle wall is increased to be close to the temperature of the PTC aluminum shell heating sheet when the liquid is not completely gasified, the resistance is reduced, the circuit current of the automatic power-off module 13 comprising the negative temperature coefficient thermistor is increased, the relay is controlled to be disconnected, the device stops heating, and the circuit can be effectively protected.
Performing airtightness inspection on the device, removing impurities, heating with heating plate to obtain liquid C6F12O vaporization, control of C based on mass flow control6F12The mixing ratio of O was fed to the test apparatus.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a constant temperature electric heating rapid inflation system for a novel environment-friendly insulating medium.
As shown in fig. 4, a constant temperature electric heating fast inflation system for a novel environment-friendly insulating medium comprises: the air tightness module is used for carrying out air tightness inspection on the device; the gas washing module is used for washing gas for the device; the inflation module is used for inflating.
The inflation comprises: heating, rapidly heating PTC aluminum shell heating plate to 70 deg.C, maintaining surface temperature, and heating C in glass bottle6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12O is vaporized;
the inflation process is completed based on a mass flow control method;
at C6F12In the process that O and background gas enter an experimental gas chamber, the flow of the two gases is set and monitored in real time by means of a mass flow controller;
mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure BDA0002743385020000081
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements.
The embodiment of the invention provides a constant-temperature electric heating rapid inflation method and system for a novel environment-friendly insulating medium, which are used for carrying out air tightness inspection on a device and removing impurities, and heating a heating sheet to enable liquid C6F12O vaporization, control of C based on mass flow control6F12The mixing ratio of O, and conveying to a test device; novel ringThe constant-temperature electric heating quick inflation method and system for the insulation medium have the advantages of low working power, electric energy saving, low cost and capability of solving the problem of conveying C6F12O mixed gas.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic or optical disk, or the like.
In addition, the method and the system for constant-temperature electric heating and rapid inflation of the novel environment-friendly insulating medium provided by the embodiment of the invention are described in detail, a specific example is adopted to explain the principle and the implementation mode of the invention, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (10)

1. A constant-temperature electric heating rapid inflation method for a novel environment-friendly insulating medium is characterized by comprising the following steps:
carrying out air tightness inspection on the device;
washing the device with gas;
and (5) inflating.
2. The method of claim 1, wherein said checking the device for hermeticity comprises:
the air charging pipeline penetrates out of the bottle cap to be fixed through the sealing gasket, the rubber ring penetrates through the air charging pipeline to connect the air charging pipeline with the glass bottle, the bottle cap is rotated to seal the glass bottle, the rubber ring is used for sealing from the inside of the bottle mouth, and the sealing gasket is used for sealing at the bottle cap.
3. The method of claim 3, wherein said checking the device for hermeticity comprises:
the air charging pipeline outside the glass bottle is connected with a switch valve, the outside of the switch valve can be connected with a three-way adapter, the other two interfaces are respectively connected with an air pressure meter and a vacuum pump, the vacuum pump is used for vacuumizing the air chamber, if the air pressure meter is stable after standing for 30 minutes, the vacuum airtightness of the device is good, otherwise, the sealing ports need to be checked one by one, and the air tightness of the air charging device is good.
4. The method of claim 1, wherein the scrubbing the device comprises:
filling background gas into the experimental air chamber and pumping out by using a vacuum pump, repeating for 3 times, and filling C required by the experiment into the air chamber after cleaning6F12And O gas, and simultaneously connecting the gas-filled pipeline with the test gas chamber by means of the adapter.
5. The method of claim 1, wherein said inflating comprises:
filling glass bottle with C6F12O liquid is reserved;
the button is pushed to open the hemispherical shell towards two sides, and then the container C is placed6F12The glass bottle of O is placed on heating device's base, closes the hemisphere shell and buckles the button, and the cylindrical hole groove in the middle of can block the bottle lid of glass bottle, fixes aerating device.
6. The method of claim 1, wherein said inflating comprises:
heating, rapidly heating PTC aluminum shell heating plate to 70 deg.C, maintaining surface temperature, and heating C in glass bottle6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12The O is vaporized.
7. The method of claim 1, wherein said inflating comprises:
the inflation process is completed based on a mass flow control method;
at C6F12And in the process that the O and the background gas enter the experiment gas chamber, the flow of the two gases is set and monitored in real time by virtue of the mass flow controller.
8. The method of claim 7, wherein the mass flow control method comprises:
mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure FDA0002743385010000021
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements.
9. A novel constant-temperature electric heating quick inflation system for environment-friendly insulating media is characterized by comprising:
the air tightness module is used for carrying out air tightness inspection on the device;
the gas washing module is used for washing gas for the device;
the inflation module is used for inflating.
10. The system of claim 9, wherein the inflation module comprises:
heating is started, the PTC aluminum shell heating plate rapidly heats up, the surface temperature is kept unchanged when the temperature reaches 70 ℃, and the glass bottle is heatedC of (A)6F12The temperature of the O liquid is heated to 49 ℃, which can ensure that C is6F12O is vaporized;
the inflation process is completed based on a mass flow control method;
at C6F12In the process that O and background gas enter an experimental gas chamber, the flow of the two gases is set and monitored in real time by means of a mass flow controller;
mixed gas consisting of C6F12O gas diluted with background gas, known as raw material gas C6F12The concentration of O is C0At a flow rate of FC6(ii) a Background gas flow rate of FAThen, the concentration of the mixed gas of the desired configuration can be represented by the following formula:
Figure FDA0002743385010000031
c can be set by the flow controller according to the concentration of the mixed gas with the required configuration6F12Flow rates F of O gas and background gasC6、FAThereby obtaining the mixed gas meeting the requirements.
CN202011158059.5A 2020-10-26 2020-10-26 Constant-temperature electric heating rapid inflation method and system for novel environment-friendly insulating medium Pending CN112303489A (en)

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