CN113019220B - Insulating gas drying and mixing device and method for physical laboratory - Google Patents

Insulating gas drying and mixing device and method for physical laboratory Download PDF

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Publication number
CN113019220B
CN113019220B CN202110217408.4A CN202110217408A CN113019220B CN 113019220 B CN113019220 B CN 113019220B CN 202110217408 A CN202110217408 A CN 202110217408A CN 113019220 B CN113019220 B CN 113019220B
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tank
mixing
air
storing
air inlet
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CN113019220A (en
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董涵
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Xiamen University Tan Kah Kee College
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Xiamen University Tan Kah Kee College
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/82Combinations of dissimilar mixers
    • B01F33/821Combinations of dissimilar mixers with consecutive receptacles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10Mixing gases with gases
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/951Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis with at least one stirrer mounted on the sun axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50Mixing receptacles
    • B01F35/53Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components
    • B01F35/531Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom
    • B01F35/5312Mixing receptacles characterised by the configuration of the interior, e.g. baffles for facilitating the mixing of components with baffles, plates or bars on the wall or the bottom with vertical baffles mounted on the walls

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

The application relates to the technical field of gas mixing devices. The utility model discloses an insulating gas drying and mixing device and method for a physical laboratory, comprising a mixing tank, wherein a first air inlet pipe and a second air inlet pipe are arranged in the mixing tank, the upper ends of the first air inlet pipe and the second air inlet pipe are positioned outside the mixing tank and are communicated with the drying tank through a first air valve, meanwhile, the lower end of the first air inlet pipe is positioned at the bottom end in the mixing tank, and the lower end of the second air inlet pipe is positioned at the upper end in the mixing tank; a stirring mechanism for mixing the gases is arranged in the mixing tank; the middle part of the mixing tank is provided with a first air outlet pipe and a second air outlet pipe, and the second air outlet pipe is communicated with the pre-storing tank through a second air valve; a pressure gauge is arranged at the upper end of the mixing tank. The application has the advantages of high speed, high efficiency and convenient use when gas mixing is carried out.

Description

Insulating gas drying and mixing device and method for physical laboratory
Technical Field
The application relates to the technical field of gas mixing devices, in particular to an insulating gas drying and mixing device and method for a physical laboratory.
Background
Pure SF 6 The (sulfur hexafluoride) gas is colorless, odorless, nontoxic and incombustible at normal temperature and pressure, has excellent insulating property and arc extinguishing capability, is an ideal insulating medium, and therefore SF in the power industry 6 Has wide application. However, SF 6 The greenhouse effect of the gas is gradually valued by environmental protection experts, so N is used at home and abroad 2 To replace or reduce SF 6 The amount of SF is found by research 6 And N 2 Better combination of mixed gas of (2) as insulating gas of high-voltage switch equipment, and various researches show that SF 6 And N 2 The mixed gas does not generate new poison during discharge, and has small sensitivity to electrode surface defects, thus having good application prospect.
At present, SF is measured in physical laboratories 6 And N 2 Before testing the performance of the mixed gas, the two gases are required to be dried and mixed uniformly. When mixing, two gases are sequentially filled into the mixing tank, the mixture is kept stand for about 30min after filling, so that the gas in the cavity is stable, and then at leastThe test can be performed after the mixture is kept stand for 24 hours, and the use in the test can be seriously influenced due to the low mixing speed and low efficiency.
Disclosure of Invention
The application discloses an insulating gas drying and mixing device and method for a physical laboratory, which aim to solve the problems.
In order to achieve the above object, the application provides an insulating gas drying and mixing device for a physical laboratory, comprising a mixing tank, wherein a first gas inlet pipe and a second gas inlet pipe are arranged in the mixing tank, the upper ends of the first gas inlet pipe and the second gas inlet pipe are positioned outside the mixing tank and are communicated with a drying tank through a first gas valve, meanwhile, the lower end of the first gas inlet pipe is positioned at the bottom end of the mixing tank, and the lower end of the second gas inlet pipe is positioned at the upper end of the mixing tank; a stirring mechanism for mixing the gases is arranged in the mixing tank; the middle part of the mixing tank is provided with a first air outlet pipe and a second air outlet pipe, and the second air outlet pipe is communicated with the pre-storing tank through a second air valve; a pressure gauge is arranged at the upper end of the mixing tank.
As a preferable scheme of the application, the drying tank comprises a first tank body and a second tank body, wherein the two tank bodies are vertically arranged in parallel, an air inlet joint is arranged on the side wall of the first tank body, a water outlet is arranged at the lower end of the first tank body, the upper end of the first tank body is communicated with the upper end of the second tank body through a connecting pipe, an air outlet joint is arranged at the lower end of the second tank body, fins are arranged in the first tank body and are in fit contact with a semiconductor refrigerating sheet, and absorbent cotton is filled in the second tank body.
As another preferable mode of the application, the stirring mechanism comprises a driving motor and a stirring frame, wherein the driving motor is positioned outside the mixing tank, the output end of the driving motor is positioned inside the mixing tank, and the stirring frame is fixedly arranged on the output end of the driving motor.
As a further improvement of the preferable scheme, the stirring frame comprises a cross-shaped bracket, the cross-shaped bracket comprises a pair of long brackets and a pair of short brackets, a first stirring fan blade is arranged below the long brackets, a second stirring fan blade is arranged below the short brackets, the first stirring fan blade is spiral, and the second stirring fan blade is straight-plate-shaped.
As another preferable mode of the application, a plurality of ribs arranged in the vertical direction are arranged on the inner wall of the mixing tank.
As another preferable scheme of the application, the pre-storing tank comprises a pre-storing tank air inlet joint and a pre-storing tank air outlet pipe, wherein the pre-storing tank air inlet joint is connected with the second air valve, a valve is arranged at the tail end of the pre-storing tank air outlet pipe, a plurality of layers of partition boards are arranged in the pre-storing tank, and the internal space of the pre-storing tank is divided into a plurality of layers of S-shaped structures through the plurality of layers of partition boards.
As still another preferable mode of the present application, a convex structure is provided on each of the multilayer separators, an air comb is vertically provided on the convex structure, and a baffle for changing the direction of the air flow is provided at the rear of the air comb.
In addition, the application also provides a dry mixing method of insulating gas for physical laboratory using the device, which comprises the following steps:
the drying tank corresponding to the first air inlet pipe is connected with N 2 The storage tank is connected with the drying tank corresponding to the second air inlet pipe and the SF 6 The storage tanks are connected to enable N 2 SF (sulfur hexafluoride) 6 Drying the materials respectively by a drying tank;
SF as required 6 And N 2 Respectively adjusting the air inflow of the two first air valves to enable the SF after drying entering the mixing tank 6 And N 2 And the required SF 6 And N 2 The mixing ratio of the two types of the pressure gauges is equal, and meanwhile, the pressure value in the mixing tank is monitored in real time through the pressure gauges;
starting the stirring mechanism to enable the dried SF entering the mixing tank 6 And N 2 Fully mixing the gases;
adjusting the second air valve to enable SF after being fully mixed 6 And N 2 By passing mixed gas into the pre-mixerThe storage tank is pre-stored and used.
As an improvement of the above mixing method, SF after the sufficient mixing is performed 6 And N 2 When the mixed gas enters the pre-storing tank, the mixed gas needs to be collected through the first air outlet pipe, and SF in the mixed gas is detected 6 And N 2 When the mixing ratio of the two gases in the mixed gas is equal to the required mixing ratio, the second air valve can be adjusted to enable the mixed gas to enter the pre-storing tank for pre-storing and using.
Compared with the prior art, the application has the beneficial effects that:
1. filling SF respectively through a first air inlet pipe and a second air inlet pipe 6 And N 2 Wherein the lower end of the first air inlet pipe is positioned at the bottom end of the mixing tank, thereby being used for filling N 2 The method comprises the steps of carrying out a first treatment on the surface of the The lower end of the second air inlet pipe is positioned at the upper end of the mixing tank, thereby being used for filling SF 6 Due to N 2 Is small in density and SF 6 Is large, thus in the case of N 2 Filling SF from a first air inlet pipe 6 After filling from the second air inlet pipe, N 2 Automatically spread upwards and SF 6 And diffuses downward, so that convection current is generated in the diffusion process of the two gases, thereby being beneficial to mixing the two gases.
2. Through the stirring mechanism arranged in the mixing tank, two gases filled in the mixing tank can be fully stirred and mixed through rotation, so that the mixing speed of the two gases is accelerated, and the mixing efficiency is effectively improved; through the bead that sets up at a plurality of vertical directions that the blending tank inner wall set up, can disturb the flow of air current to the inside turbulent flow that forms of blending tank further accelerates the mixing of two kinds of gases.
3. Through setting up two sets of stirring flabellums on the stirring frame of rabbling mechanism respectively into heliciform, straight platy, can produce the stirring of a plurality of directions to the gas of inside at the stirring of stirring frame in-process to accelerate the mixing of gas.
4. After the inside of the pre-storing tank is partitioned by using the multi-layer partition boards, the inside of the pre-storing tank can be partitioned into a plurality of small spaces with smaller heights, so that the mixed gas can be prevented from being separated greatly in the pre-storing process; simultaneously through protruding structure, gas comb and the guide plate that set up, can be when the mixed gas in will prestoring the jar discharges, can break the gas separation that mixed gas appears because of prestoring when making mixed gas through a plurality of protruding structures, gas comb and guide plate to make it resume the mixed state to use in the time of the experiment.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic view of the internal structure of the mixing tank of the present application;
FIG. 3 is a schematic view of the internal rib structure of the mixing tank of the present application;
FIG. 4 is a schematic view of the internal structure of the pre-stored tank of the present application;
FIG. 5 is a schematic view of the structure of the stirring frame of the present application;
FIG. 6 is a schematic view of the structure of the drying tank of the present application;
FIG. 7 is a schematic cross-sectional view of a drying tank of the present application;
fig. 8 is a flow chart of the method of the present application.
The correspondence between the reference numerals and the component names in fig. 1 to 8 is:
1. a mixing tank; 101. a pressure gauge; 102. a first air outlet pipe; 103. a second air outlet pipe; 104. a first air inlet pipe; 105. a second air inlet pipe; 106. a rib; 2. a drying tank; 201. a first tank; 202. a second tank; 203. a connecting pipe; 204 an air outlet joint; 205. an air inlet joint; 206. a water outlet; 207. a fin; 208. a semiconductor refrigeration sheet; 3. pre-storing a tank; 301. a pre-storing tank air outlet pipe; 302. pre-storing a tank air inlet joint; 303. a valve; 304. a partition plate; 305. a bump structure; 306. air combing; 307. a deflector; 4. a second air valve; 5. a first air valve; 6. a driving motor; 7. a stirring rack; 701. a long support; 702. a short stent; 703. a first stirring blade; 704. and the second stirring fan blade.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.
Embodiments of the present application are described below with reference to fig. 1 to 8.
The insulating gas drying and mixing device for physical laboratory as shown in fig. 1-7 comprises a mixing tank 1, wherein a first gas inlet pipe 104 and a second gas inlet pipe 105 are arranged in the mixing tank 1, the upper ends of the first gas inlet pipe 104 and the second gas inlet pipe 105 are positioned outside the mixing tank 1 and are communicated with a drying tank 2 through a first gas valve 5, and the lower end of the first gas inlet pipe 104 is positioned at the bottom end of the inside of the mixing tank 1 for filling N 2 The lower end of the second air inlet pipe 105 is positioned at the upper end of the interior of the mixing tank 1 for filling SF 6 Due to N 2 Is less than SF 6 Thus in the case of N 2 Is gradually diffused upwards after being filled through the first air inlet pipe 104, and SF 6 The gas filled through the second gas inlet pipe 105 gradually diffuses downward so that the two gases are relatively flowed at the time of the relative diffusion, thereby accelerating the mixing of the two gases. A stirring mechanism for mixing the gases is arranged inside the mixing tank 1; the middle part of the mixing tank 1 is provided with a first air outlet pipe 102 and a second air outlet pipe 103, the second air outlet pipe 103 is communicated with the pre-storing tank 3 through a second air valve 4, mixed gas in the mixing tank 1 can be discharged into the pre-storing tank 3 through the second air valve 4, an exhaust valve can be arranged at the first air outlet pipe 102, in the gas mixing process, mixed gas sampling can be carried out through the exhaust valve, then the mixing ratio of the mixed gas is detected, after the mixing ratio after multiple detection is compounded with the experiment requirement, the mixed gas in the mixing tank 1 is discharged into the pre-storing tank 3 through the second air valve 4 for use or pre-preparation through the first interfaceAnd (5) storing. The upper end of the mixing tank 1 is provided with the pressure gauge 101, and the pressure of the gas in the mixing tank 1 can be monitored in real time through the pressure gauge 101, so that the internal pressure is prevented from being too high.
Specifically, as shown in fig. 6, the drying tank 2 includes a first tank 201 and a second tank 202, the two tanks are vertically arranged in parallel, an air inlet joint 205 is provided on a side wall of the first tank 201, a water outlet 206 is provided at a lower end of the first tank 201, an upper end of the first tank 201 and an upper end of the second tank 202 are communicated through a connecting pipe 203, and an air outlet joint 204 is provided at a lower end of the second tank 202. As shown in fig. 7, a fin 207 is provided in the first tank 201, the fin 207 and the semiconductor refrigeration sheet 208 are in contact with each other, and the second tank 202 is filled with absorbent cotton.
Specifically, as shown in fig. 2, the stirring mechanism comprises a driving motor 6 and a stirring frame 7, the driving motor 6 is located outside the mixing tank 1, the output end of the driving motor 6 is located inside the mixing tank 1, the stirring frame 7 is fixedly installed on the output end of the driving motor 6, and the stirring frame 7 can be driven to rotate through the rotation of the driving motor 6, so that the gas inside the mixing tank 1 is stirred, and the mixing of the two gases is accelerated. As shown in fig. 5, the stirring frame 7 includes a cross-shaped bracket including a pair of long brackets 701 and a pair of short brackets 702, a first stirring blade 703 is provided below the long brackets 701, a second stirring blade 704 is provided below the short brackets 702, the first stirring blade 703 is spiral, and the second stirring blade 704 is straight. Through the stirring fan blades with two different shapes, the gas can be stirred in multiple directions in the process of stirring the gas, so that the two mixed gases form turbulent flow, and the mixing speed of the two gases is increased.
As shown in fig. 3, a plurality of ribs 106 are provided on the inner wall of the mixing tank 1 in the vertical direction, and each rib 106 has a plurality of protruding corners in different directions, so that during the process of stirring the gases, two gases flow inside the mixing tank 1 and the direction of the gas flow inside the mixing tank is more changeable under the blocking of the ribs 106, thereby further accelerating the mixing efficiency of the two gases.
As shown in fig. 4, the pre-tank 3 includes a pre-tank air inlet connector 302 and a pre-tank air outlet pipe 301, the pre-tank air inlet connector 302 is connected with the second air valve 4, a valve 303 is arranged at the tail end of the pre-tank air outlet pipe 301, the air in the pre-tank 3 can be discharged through the valve 303, a multi-layer partition board 304 is arranged in the pre-tank 3, the internal space of the pre-tank 3 is divided into a multi-layer S-shaped structure through the multi-layer partition board 304, the formed multi-layer S-shaped structure not only increases the flowing route length of the internal air flow, but also reduces the height difference of the air, and thus the mixed gas can be prevented from being separated by the air of a larger degree due to standing. The convex structures 305 are arranged on each multi-layer partition 304, the air combs 306 are vertically arranged on the convex structures 305, and the guide plates 307 for changing the air flow direction are arranged at the rear parts of the air combs 306, so that when the air is exhausted outwards through the valves 303, the mixed air in the pre-storage tank 3 can be exhausted outwards along the multi-layer S-shaped structures, and in the air exhausting and flowing process, the mixed air can be remixed under the actions of the convex structures 305, the air combs 306 and the guide plates 307, so that the fully mixed state is recovered from the slightly separated state of the air.
The insulating gas dry mixing method for physical laboratory as shown in fig. 8 comprises the following steps:
801. drying tanks 2 and N corresponding to the first air inlet pipe 104 2 The storage tanks are connected to connect the drying tank 2 corresponding to the second air inlet pipe 105 with SF 6 The storage tanks are connected to enable N 2 SF (sulfur hexafluoride) 6 Drying is performed by the drying tanks 2.
Specifically, after drying in the drying tank, the accumulated water in the first tank 201 needs to be drained through a drain valve at the drain port 206 in the lower part of the drying tank 2.
802. SF as required 6 And N 2 Respectively adjusting the air inflow of the two first air valves 5 to make the dried SF entering the mixing tank 1 6 And N 2 Ratio of intake air amount and required SF 6 And N 2 Is provided, while the pressure value in the mixing tank 1 is monitored in real time by the pressure gauge 101.
803. Starting the stirring mechanism to stir the dried SF entering the mixing tank 1 6 And N 2 Gas inletFully mixing the materials;
specifically, SF after being sufficiently mixed 6 And N 2 When the mixed gas enters the pre-storing tank 3, the mixed gas needs to be collected through the first air outlet pipe 2, and SF in the mixed gas is detected 6 And N 2 When the mixing ratio of the two gases in the mixed gas is equal to the required mixing ratio, the second air valve 4 can be adjusted to enable the mixed gas to enter the pre-storing tank 3 for pre-storing and using. In the detection of SF in the mixed gas 6 And N 2 To perform a plurality of sampling tests, and to make the test result more accurate by referring to the data based on the plurality of test results.
804. Adjusting the second air valve 4 to make SF after fully mixing 6 And N 2 The mixed gas is pre-stored and used by entering a pre-storing tank 3.
The SF after the second air valve 4 was adjusted to sufficiently mix 6 And N 2 After the mixed gas enters the pre-storage tank 3, the valve 303 at the pre-storage tank air outlet pipe 301 of the pre-storage tank 3 can be directly opened to directly discharge the mixed gas for use, and the mixed gas can be temporarily pre-stored in the pre-storage tank 3 for a period of time so as to be convenient for use in experiments.
In the present application, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
The above is only a preferred embodiment of the present application, and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
In the present application, the terms "upper", "lower", "left", "right", "middle", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application.

Claims (1)

1. Insulating gas drying mixing arrangement is used in physical laboratory, its characterized in that: the device comprises a mixing tank, wherein a first air inlet pipe and a second air inlet pipe are arranged in the mixing tank, the upper ends of the first air inlet pipe and the second air inlet pipe are positioned outside the mixing tank and are communicated with a drying tank through a first air valve, meanwhile, the lower end of the first air inlet pipe is positioned at the bottom end of the mixing tank, and the lower end of the second air inlet pipe is positioned at the upper end of the mixing tank; a stirring mechanism for mixing the gases is arranged in the mixing tank; the middle part of the mixing tank is provided with a first air outlet pipe and a second air outlet pipe, and the second air outlet pipe is communicated with the pre-storing tank through a second air valve; a pressure gauge is arranged at the upper end of the mixing tank;
the stirring mechanism comprises a driving motor and a stirring frame, the driving motor is positioned outside the mixing tank, the output end of the driving motor is positioned inside the mixing tank, and the stirring frame is fixedly arranged on the output end of the driving motor;
the stirring frame comprises a cross-shaped bracket, the cross-shaped bracket comprises a pair of long brackets and a pair of short brackets, a first stirring fan blade is arranged below the long brackets, a second stirring fan blade is arranged below the short brackets, the first stirring fan blade is in a spiral shape, and the second stirring fan blade is in a straight plate shape;
the pre-storing tank comprises a pre-storing tank air inlet connector and a pre-storing tank air outlet pipe, the pre-storing tank air inlet connector is connected with the second air valve, a valve is arranged at the tail end of the pre-storing tank air outlet pipe, a plurality of layers of partition boards are arranged in the pre-storing tank, and the internal space of the pre-storing tank is divided into a plurality of layers of S-shaped structures through the plurality of layers of partition boards;
a convex structure is arranged on each multi-layer partition board, an air comb is vertically arranged on each convex structure, and a guide plate for changing the direction of air flow is arranged at the rear part of each air comb;
after the inside of the pre-storing tank is partitioned by using a plurality of layers of partition boards, the inside of the pre-storing tank is partitioned into a plurality of small spaces with smaller heights, so that the mixed gas is prevented from being separated by a large margin in the pre-storing process; through the arranged bulge structures, the air combs and the guide plates, when the mixed gas in the pre-storing tank is discharged, the mixed gas can break the gas separation of the mixed gas caused by pre-storing when passing through the bulge structures, the air combs and the guide plates, so that the mixed gas is recovered to be in a mixed state, and the mixed gas is convenient to use in experiments;
the drying tank comprises a first tank body and a second tank body, wherein the two tank bodies are vertically arranged in parallel, an air inlet joint is arranged on the side wall of the first tank body, a water outlet is arranged at the lower end of the first tank body, the upper end of the first tank body is communicated with the upper end of the second tank body through a connecting pipe, an air outlet joint is arranged at the lower end of the second tank body, fins are arranged in the first tank body and are in fit contact with a semiconductor refrigerating sheet, and absorbent cotton is filled in the second tank body;
a plurality of ribs arranged in the vertical direction are arranged on the inner wall of the mixing tank; the flow of the air flow is disturbed through the convex edges arranged in the vertical directions on the inner wall of the mixing tank, so that turbulent flow is formed in the mixing tank, and the mixing of the two gases is further accelerated;
the convex edges are provided with convex edges and corners in different directions;
the drying tank corresponding to the first air inlet pipe is connected with N 2 The storage tank is connected with the drying tank corresponding to the second air inlet pipe and the SF 6 The storage tanks are connected to enable N 2 SF (sulfur hexafluoride) 6 Drying the materials respectively by a drying tank;
SF as required 6 The mixing ratio with N2,respectively adjusting the air inflow of the two first air valves to enable the SF after drying entering the mixing tank 6 And N 2 And the required SF 6 And N 2 The mixing ratio of the two types of the pressure gauges is equal, and meanwhile, the pressure value in the mixing tank is monitored in real time through the pressure gauges;
starting the stirring mechanism to enable the dried SF entering the mixing tank 6 And N 2 Fully mixing the gases;
adjusting the second air valve to enable SF after being fully mixed 6 And N 2 The mixed gas is pre-stored and used by entering a pre-storing tank;
SF after the thorough mixing 6 And N 2 When the mixed gas enters the pre-storing tank, the mixed gas needs to be collected through the first air outlet pipe, and SF in the mixed gas is detected 6 And N 2 When the mixing ratio of the two gases in the mixed gas is equal to the required mixing ratio, the second air valve can be adjusted to enable the mixed gas to enter the pre-storing tank for pre-storing and using.
CN202110217408.4A 2021-02-26 2021-02-26 Insulating gas drying and mixing device and method for physical laboratory Active CN113019220B (en)

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CN208406810U (en) * 2018-05-23 2019-01-22 浙江天甘科技有限公司 A kind of alcohol allotment automatic control device
CN110302716A (en) * 2019-08-07 2019-10-08 国网安徽省电力有限公司电力科学研究院 Constant volume transformation big flow air distribution system and its air distributing method
CN211025993U (en) * 2019-11-06 2020-07-17 河南路大公路交通科技有限公司 Novel vertical stirring device
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CN211358409U (en) * 2019-10-25 2020-08-28 上海先普气体技术有限公司 Gas mixing device

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Publication number Priority date Publication date Assignee Title
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