CN109915728A - A kind of SF6Full-automatic vacuum-pumping inflates cart - Google Patents
A kind of SF6Full-automatic vacuum-pumping inflates cart Download PDFInfo
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Abstract
The present invention relates to full-automatic vacuum-pumping inflation field more particularly to a kind of SF6Full-automatic vacuum-pumping inflates cart, including cart ontology, pumped vacuum systems and level pressure inflation system, cart ontology include controller and bearing platform, and level pressure inflation system includes SF6Gas cylinder, shut-off valve, filter, pressure sensor, pressure reducing valve, solenoid valve and gas storage surge tank are connected using filling each other, and pumped vacuum systems includes absorber, vacuum pump, vacuum meter and shut-off valve, and the present invention is by SF6Gas cylinder pumped vacuum systems and level pressure inflation system are integrated on cart, easy to operate, and facilitate carrying；Real-time monitoring can be carried out to the pressure of gas equipment when inflation, manipulate the switch of solenoid valve to realize the accurate control to the blowing pressure；It is equipped with the absorber for being loaded with silver-colored appendix graphene/silicon dioxide aerogel particle at the gas outlet of vacuum pump, the toxic gas molecule of SF6 gas decomposition can be absorbed, protect environment and the health of operator.
Description
Technical field
The present invention relates to full-automatic vacuum-pumping inflation field more particularly to a kind of SF6Full-automatic vacuum-pumping inflates cart.
Background technique
SF6It is exactly sulfur hexafluoride, is a kind of dielectric, dielectric strength is 2.33 times of air, and arc extinguishing ability is empty
100 times of gas, so being typically used as the arc-extinguishing medium of the electrical equipments such as breaker, being repaired in electrical equipment and inflating it
Before, it is mixed into air in electrical equipment in order to prevent, requires to vacuumize electrical equipment to guarantee SF6The purity of gas,
However traditional some air charging systems that vacuumize mostly are hand, manually control and take out only by the experience of operator
Vacuum and inflation, this undoubtedly has biggish security risk, wastes a lot of manpower and material resources, and reduces efficiency, also be easy by
In manually control cause to vacuumize and inflate it is unstable, to equipment generate loss；Also, it realizes simultaneously and vacuumizes, inflates function
The equipment collaboration effect that gas cylinder, vacuum pump, controller, pipeline, valve etc. are more can be needed, design is a set of to integrate above equipment
In one, and device easy to remove can effectively improve working efficiency, reduce manpower and material resources cost.
Pure SF6Gas is colourless, tasteless, odorless, non-ignitable, and chemical property is stablized at normal temperature, belongs to inert gas.In length
Under the discharge scenario of phase, under the influence of the factors such as electric arc, corona, spark discharge and shelf depreciation, high temperature, SF6Gas can be into
Row decomposes, and generates some harmful subfluoride, especially some high toxicity decomposition products, such as SOF2、SO2F2And SO2Deng them
Skin, eyes, mucous membrane can be stimulated, if soakage is big, can also cause dizzy and pulmonary edema or even causing death, however it is existing
The tail gas of extraction is not filtered absorption when vacuumizing by the air charging system that vacuumizes in technology, when so that equipment using
The toxic gas that SF6 is decomposed flows into atmosphere, both polluted environment, is also easy to damage the health of staff.
For example, a kind of, disclosed in Chinese patent literature " a kind of manual inflate of sulfur hexafluoride electrical equipment is vacuumized
Device ", notification number CN203488991U, the invention include connector, pipeline and pumping equipment, and the connector is three-way connection,
One end of the three-way connection is connect with pumping equipment, and the another both ends of three-way connection are separately connected SF by pipeline6Electrical equipment
And gas source, however the suction unit of the invention is hand suction unit, and carries inconvenience, wastes manpower and material resources, and hold
Easily lead to work efficiency drop.
Summary of the invention
The present invention is that vacuumize air charging system in the prior art be mostly hand in order to overcome, and carries inconvenience etc. and ask
Topic, propose it is a kind of can full-automatic vacuum-pumping, level pressure inflation and all devices be integrated in one facilitate the SF of carrying6Entirely certainly
It is dynamic to vacuumize inflation cart.
This invention also solves SF when vacuumizing6The toxic gas of decomposition flows into atmosphere, is easy to cause personnel and environment
The problems such as injury, SF can effectively be adsorbed by proposing one kind6Decompose the silver-colored appendix graphene/silicon dioxide aeroge of gas
Grain.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of SF6Full-automatic vacuum-pumping inflates cart, including cart ontology, pumped vacuum systems and level pressure inflation system, described to push away
Vehicle ontology includes controller and bearing platform, and the level pressure inflation system includes SF6Gas cylinder, shut-off valve, filter, pressure sensing
Device, pressure reducing valve, solenoid valve and gas storage surge tank, each other using fill connect, the SF6Gas cylinder and conduit air inlet connect
It connects, the conduit air inlet end setting filter, pressure sensor and pressure reducing valve, the pipeline outlet port setting pressure pass
Sensor, gas storage surge tank and solenoid valve, the shut-off valve arrangement are in the duct, described to vacuumize to control the connection of pipeline
System includes vacuum pump, vacuum meter and shut-off valve, and the pipeline of described shut-off valve one end and inflation system connects, one end and vacuum meter
Connection, the other end of vacuum meter are controlled to a vacuum pump, and the outlet port of the vacuum pump is equipped with absorber, the vacuum pump and storage
Gas surge tank is set on bearing platform, and the controller and shut-off valve, solenoid valve, pressure sensor and vacuum pump circuit connection are used
It is vacuumized or the opening and closing of inflated condition with control.
Cart ontology of the present invention is equipped with pumped vacuum systems and level pressure inflation system, in level pressure inflation system, SF6Gas cylinder
It is connect with air inlet, to provide gas source, inlet port is disposed with filter, pressure sensor and pressure reducing valve, wherein mistake
Filter is for filtering SF6SF in gas cylinder6The impurity such as the moisture in gas, pressure sensor are used to monitor the pressure of inlet port, subtract
Pressure valve is used to reduce the pressure of inlet port, and keeps the stabilization of pressure, and pressure sensor, gas storage surge tank is arranged in outlet port
And solenoid valve, wherein since gas outlet is connect with electrical equipment, gas storage surge tank can be used for buffer gas, prevent from being filled with electrical
Gas flow rate is excessive and generate damage to electrical equipment in equipment, and upon inflation, pressure sensor is to monitor outlet port, i.e.
The pressure of electrical equipment, to judge whether the pressure of electrical equipment reaches setting value, when the pressure of electrical equipment is not up to set
When definite value, solenoid valve is automatically opened, and the pressure of electrical equipment is charged to setting pressure.
Before inflation, it needs to remaining SF in electrical equipment and in cart pipeline6Gas using pumped vacuum systems into
Row abstraction, and in electrical equipment use process, since the factors such as electric arc, corona, spark discharge and shelf depreciation, high temperature influence
Under, SF6Gas will do it decomposition, generate some harmful subfluoride, especially some high toxicity decomposition products, such as SOF2、
SO2F2And SO2Deng they can stimulate skin, eyes, mucous membrane, if soakage is big, can also cause dizzy and pulmonary edema, or even cause
People is dead, therefore, when vacuumizing, absorber is equipped in the outlet port of vacuum pump, to absorb SF6The high toxicity of gas decomposes
Object.
Vacuum pump and gas storage surge tank are set on bearing platform, this is because vacuum pump and gas storage surge tank are pumped vacuum systems
With heavier two equipment of level pressure inflation system, it is set on bearing platform and is conducive to the stabilization of cart, cutting in cart of the present invention
Only valve, solenoid valve, pressure sensor and vacuum pump are connect with controller circuitry, are controlled by controller and are vacuumized or fill
The opening and closing of gaseity, wherein controller is programmable logic controller (PLC) in the prior art, model Siemens S7-
200SMART。
Preferably, the pressure reducing valve is set on controller.
Preferably, the top of the cart ontology is equipped with SF6Gas cylinder limited block, the limited block is equipped with and SF6Gas cylinder
The half round cut of shape cooperation.
Preferably, the bottom of the cart ontology is equipped with SF6Gas cylinder bearing block.
Preferably, bearing block is equipped with and SF6The circular recess of gas cylinder shape cooperation.
SF6Gas cylinder can be placed on the SF set on cart body bottom portion6On gas cylinder bearing block, and it is embedded on bearing block
In circular recess, also, SF6Gas cylinder can be embedded in the half round cut of limited block, further to SF6Gas cylinder is limited.
Preferably, the cart ontology is equipped with handrail.
Preferably, two side bottom of cart ontology is equipped with idler wheel.
Preferably, the absorber is provided with silver-colored appendix graphene/silicon dioxide aerogel particle.
Preferably, the preparation of the silver appendix graphene/silicon dioxide aerogel particle the following steps are included:
(1) it disperses graphene oxide in n,N-Dimethylformamide, ultrasonic disperse 0.5-1h, obtains graphene oxide dispersion
Liquid；
(2) ethyl orthosilicate is dissolved in deionized water, the hydrochloric acid solution and ethyl alcohol of 0.1mol/L is then added, at 50-80 DEG C
Lower stirring 1-2h, obtains silicon dioxide gel；
(3) silicon dioxide gel that step (2) is prepared is added into n,N-Dimethylformamide, ethylene glycol is then added
Aliphatic ester, anhydrous sorbitol laurate and propylene glycol stir 0.5-1h after mixing at 40-70 DEG C, and step is added
(1) graphene oxide dispersion being prepared, ultrasonic disperse 0.5-1h, add the ammonium hydroxide of 10wt-20wt% to pH be 7-
8, after stirring 10-30min, obtain graphene oxide/silica dioxide gel particle；
(4) graphene oxide/silica dioxide gel particle is placed in aged solution, the aging 20-30h at 50-90 DEG C, then
It is dipped in acetone, carries out solvent displacement；
(5) graphene oxide/silica dioxide gel particle after aging and solvent displacement is placed in reaction kettle, is continually fed into two
Carbonoxide to pressure reaches 8-14Mpa, after extracting 10-15h at 40-60 DEG C, is down to room temperature, obtains graphene oxide/dioxy
SiClx aerogel particle；
(6) ammonium hydroxide of 5wt-10wt% is slowly dropped into silver nitrate solution, until the black precipitate generated completely disappears, is prepared
Obtain silver ammino solution；
(7) graphene oxide/silica aerogel particles are immersed in silver ammino solution, after mixing evenly at 150-180 DEG C
Oil bath under react 15-20h, then cool down, be washed with deionized and the dry 12-24h at 60-80 DEG C at room temperature, obtain
To silver-colored appendix graphene/silicon dioxide aerogel particle.
Aerosil is a kind of light porous material with 3D network structure, and surface area is high, Kong Rong great, and
Pore-size distribution is relatively narrow, and the present invention uses silica aerogel particles as carrier, while aerosil preparation
It is compound with graphene oxide, material is assigned to SF finally by appendix silver6The powerful adsorption capacity of gas decomposition product.It was preparing
Cheng Zhong, firstly, it is necessary to ethyl orthosilicate is soluble in water, and silicon dioxide gel, silica are obtained with ethyl alcohol, mixed in hydrochloric acid
Colloidal sol, which is nanosized silica particles, is present in the colloidal solution formed in water by single spherical or multiple aggregations, this
It is linked together by way of silicon oxygen bond between a little silica dioxide granules, also, dioxy is worked as there is also a large amount of hydroxyl in surface
SiClx colloidal sol is placed in n,N-Dimethylformamide, and when mixing with graphene oxide dispersion, the hydroxyl of surface of graphene oxide
The hydroxyl of base, carboxyl isoreactivity group and silica surface forms hydrogen bond, so that graphene oxide is adsorbed in silica
Surface, and stirred in the presence of glycol fatty acid ester, anhydrous sorbitol laurate and propylene glycol, so that titanium dioxide
Silica solution forms drop in organic solvent, and ammonium hydroxide is then added, and ammonium hydroxide is enclosed in silicon dioxide gel droplet surface and spreads
To inside, makes silicon dioxide gel that polymerization reaction occur and form gel, obtain graphene oxide/silica dioxide gel particle, this
When graphene oxide can be preferable be scattered in inside silica dioxide gel, be subsequently placed in aged solution and carry out aging, and soak
It steeps in acetone soln, displaces the raw material not reacted completely, then place it in the environment of carbon dioxide, under given conditions
Graphene oxide/silica aerogel particles are obtained after drying.
It is prepared after graphene oxide/silica aerogel particles, in order to enable graphene oxide/silica
Graphene oxide success appendix silver in aerogel particle, has used ammonium hydroxide reduction silver nitrate and graphene oxide, however has used
Ammonium hydroxide restores silver nitrate respectively and graphene oxide needs two steps, and the process is more complicated, and when this kind of method of use, silver nitrate
In silver ion reduction be elemental silver after, appendix amount of the elemental silver on graphene is smaller, and appendix is uneven, therefore, first
First ammonium hydroxide is slowly dropped into silver nitrate solution, silver ammino solution is prepared, it is then anti-using silver ammino solution and graphene oxide
It answers, while restoring silver nitrate and graphene oxide, by silver-colored appendix in silver-colored appendix stone on the graphene oxide of reduction, has been prepared
Black alkene/silica aerogel particles.
Silver-colored appendix graphene/silicon dioxide aerogel particle is to SF6The decomposition product of gas has powerful suction-operated, this
It is due to silver-colored appendix graphene surface and SOF2、SO2F2And SO2Equal SF6It is intermolecular there are strong interaction to decompose gas,
Middle SO2F2Gas molecule itself cracks when interacting with silver-colored appendix graphene surface, meanwhile, the atom combination after cracking
At SO2Gas molecule, and SO2Gas molecule itself sulphur-oxygen key tension failure in this interaction, with graphene surface
Silver forms silver-sulfide linkage and silver-oxygen key；SOF2Gas molecule can also break when interacting with silver-colored appendix graphene surface
It splits, fluorine atom and silver atoms form new silver-fluorine bond, and sulphur atom and silver also form new silver-sulfide linkage, to realize absorption.
Preferably, graphene oxide concentration is 10-20mg/ in graphene oxide dispersion described in step (1)
100ml。
Preferably, the mass ratio of ethyl orthosilicate described in step (2) and ethyl alcohol is 4-5:1.
Preferably, glycol fatty acid ester described in step (3) and anhydrous sorbitol laurate mass ratio are 1-3:
1。
When inventor tests, discovery selects mixed surfactant more beneficial to emulsion intercalation method, uses
When mixed surfactant, when forming new interface in lotion, used for the speed ratio that interface provides emulsifier molecules single
One emulsifier is fast, and the mass ratio of glycol fatty acid ester and anhydrous sorbitol laurate is in aforementioned proportion, after mixing
Emulsifier there is more appropriate hydrophilic lipophilic balance, hydrophilic lipophilic balance is excessive or too small is unfavorable for the steady of lotion
It is fixed.
Preferably, aged solution described in step (4) is the mixed solution of ethyl orthosilicate and ethyl alcohol, the positive silicic acid
The mass ratio of ethyl ester and ethyl alcohol is 1-9:3.
Therefore, the invention has the following beneficial effects: (1) by SF6Gas cylinder pumped vacuum systems and level pressure inflation system are integrated
It is easy to operate on cart, and facilitate carrying；(2) real-time monitoring, manipulation electricity can be carried out when inflating to the pressure of electrical equipment
The switch of magnet valve is to realize the accurate control to the blowing pressure；(3) buffering air accumulator can be used for buffer gas, prevent from filling
Enter gas flow rate in electrical equipment it is excessive and to electrical equipment generate damage (4) at the gas outlet of vacuum pump be equipped be loaded with silver
The absorber of appendix graphene/silicon dioxide aerogel particle, can absorb SF6The SOF that gas decomposes2、SO2F2And SO2Etc. having
Poisonous gas molecule protects environment and the health of operator.
Detailed description of the invention
Fig. 1 is structure of the invention front view.
Fig. 2 is structure of the invention schematic illustration.
Fig. 3 is structure of the invention side view.
Fig. 4 is standoff features schematic diagram of the present invention.
Fig. 5 is bearing block structural schematic diagram of the present invention.
In figure: cart ontology 1, controller 2, bearing platform 3, limited block 4, half round cut 5, bearing block 9, circular recess 10,
Handrail 11, idler wheel 12, air inlet 13, gas outlet 14, SF6Gas cylinder 21, gas storage surge tank 22, vacuum pump 23, vacuum meter 24 absorb
Device 25, the first shut-off valve V1, the second shut-off valve V2, third shut-off valve V3, pressure reducing valve PV1, solenoid valve SV1, first pressure sensing
Device G1, second pressure sensor G2, filter F 1.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
Embodiment 1: as shown in Figs. 1-5, a kind of SF6Full-automatic vacuum-pumping inflates cart, including cart ontology 1, vacuumizes
System and level pressure inflation system, the cart ontology include controller 2 and bearing platform 3, and the top of cart ontology 1 is equipped with SF6Gas
Bottle limited block 4, bottom are equipped with SF6Gas cylinder bearing block 9, the bearing block 9 is equipped with and SF6The circle of gas cylinder shape cooperation is recessed
Mouthfuls 10, handrail 11 is additionally provided on cart ontology, and two side bottom of cart ontology is equipped with idler wheel 12, the level pressure inflation system includes
SF621, three shut-off valves of gas cylinder, 1, two pressure sensor of filter F, pressure reducing valve PV1, solenoid valve SV1 and gas storage surge tank
22, it is connected each other using pipeline, wherein three shut-off valves are respectively that the first shut-off valve V1, the second shut-off valve V2 and third are cut
Only valve V3, two pressure sensors are respectively first pressure sensor G1 and second pressure sensor G2, SF6Gas cylinder and pipeline into
Port 13 connects, and 13 end of air inlet is equipped with the first shut-off valve V1, the one end the first pressure sensor G1 and the first cut-off
Valve V1 connection, the other end are connect with filter F 1, and the pipeline of 1 other end of filter F passes through controller 2, and with controller 2
On pressure reducing valve PV1 connection, pipeline pass through controller 2 after be divided into two, wherein a pipeline is connected with solenoid valve in turn
SV1, gas storage surge tank 22, second pressure sensor G2 and the second shut-off valve V2, the second shut-off valve V2 the other end connect outlet
Mouth 14, another pipeline is connect with pumped vacuum systems, successively includes third shut-off valve V3, vacuum meter 24, vacuum pump 23 and absorption
Device 25, absorber 25 are mounted with silver-colored appendix graphene/silicon dioxide aerogel particle, the gas outlet of vacuum pump 23 and absorber 25
Connection, and lead to atmosphere, the vacuum pump 23 and gas storage surge tank 22 are set on bearing platform 3, controller 2 and the first shut-off valve
V1, the second shut-off valve V2, third shut-off valve V3, solenoid valve SV1, first pressure sensor G1, second pressure sensor G2 and true
Sky 23 circuit connections of pump, vacuumize or the opening and closing of inflated condition to control.
When electrical equipment is repaired or inflated, it is divided into vacuumizing and inflates two steps with level pressure, vacuumizing it
Before, first by SF6Gas cylinder 21 is embedded in the circular recess 10 of bearing block 9, is placed in the half round cut 5 of limited block 4, screws out the
One rotating semicircular 6 and the second rotating semicircular 7 are by SF6Gas cylinder 21 is limited, then by SF6Gas cylinder 21 is connected with air inlet 13, this
When by SF6Gas cylinder 21 is still in closed state, and electrical equipment is connect with gas outlet 14, then passes through controller for first
Shut-off valve V1, the second shut-off valve V2, third shut-off valve V3 and solenoid valve SV1 are opened, while vacuum pump 23 brings into operation and vacuumizes,
At this point, vacuum pump 23 takes out the gas in the residual gas and electrical equipment in vacuum system and inflation system pipeline completely
It removes, so that it is led to atmosphere after the silver-colored appendix graphene/silicon dioxide aerogel particle absorption that absorber 25 is reprinted, work as vacuum
After vacuum meter 24 on pump 23 reaches the vacuum degree of setting, vacuum pump 23 is automatically stopped operation, while third shut-off valve V3 is closed,
SF is opened at this time6After gas cylinder 21, SF6Gas is punched into electrical equipment by the pipeline of level pressure inflation system, adjustable at this time
Pressure reducing valve PV1 is to adjust admission pressure, while being inflated, first pressure sensor G1 and second pressure sensor G2
Air inlet 13 and the pressure of the pipeline of gas outlet 14 are monitored respectively, when the pressure of first pressure sensor G1 reaches setting
After value, solenoid valve SV1 is automatically closed, and stops inflation, after manifold pressure is stablized, since in inflation, first pressure is passed
Sensor G1 is than the pipeline where second pressure sensor G2 closer to SF6Gas cylinder 21, therefore first pressure sensor upon inflation
After G1 reaches setting pressure closing solenoid valve SV1, until the pressure of electrical equipment is stablized, i.e., after 14 pressure of gas outlet is stablized,
Centainly slightly below the pressure of setting, the switch of the solenoid valve of controller automatic control at this time delay the pressure of second pressure sensor G2
It is slow the pressure that electrical equipment pressure is charged in setting pressure, that is, second pressure sensor G2 is reached into setting value after,
All valves are closed, entire gas replenishment process is completed.
The preparation of silver-colored appendix graphene/silicon dioxide aerogel particle the following steps are included:
(1) it disperses graphene oxide in n,N-Dimethylformamide, ultrasonic disperse 0.5h, obtaining graphene oxide concentration is
The graphene oxide dispersion of 10mg/100ml；
(2) 40g ethyl orthosilicate is dissolved in 100g deionized water, then be added 3.8g 0.1mol/L hydrochloric acid solution and
10g ethyl alcohol stirs 2h at 50 DEG C, obtains silicon dioxide gel；
(3) silicon dioxide gel that 50g step (2) is prepared is added to 150gN, in dinethylformamide, then plus
Enter 0.45g glycol fatty acid ester, 0.45g anhydrous sorbitol laurate and 0.3g propylene glycol, 1h mixing is stirred at 40 DEG C
After uniformly, the 25ml graphene oxide dispersion that step (1) is prepared is added, ultrasonic disperse 0.5h adds 10wt%'s
Ammonium hydroxide is 7 to pH, after stirring 10min, obtains graphene oxide/silica dioxide gel particle；
(4) graphene oxide/silica dioxide gel particle is placed in the mixed solution of 50g ethyl orthosilicate and 10g ethyl alcohol,
Aging 20h, is then dipped in acetone at 90 DEG C, carries out solvent displacement；
(5) graphene oxide/silica dioxide gel particle after aging and solvent displacement is placed in reaction kettle, is continually fed into two
Carbonoxide to pressure reaches 8Mpa, after extracting 10h at 60 DEG C, is down to room temperature, obtains graphene oxide/aerosil
Particle；
(6) ammonium hydroxide of 5wt% is slowly dropped into 2wt% silver nitrate solution, until the black precipitate generated completely disappears, is prepared
Obtain silver ammino solution；
(7) graphene oxide/silica aerogel particles are immersed in silver ammino solution, after mixing evenly in 180 DEG C of oil
15h is reacted down in bath, then cools down at room temperature, is washed with deionized and dries 18h at 70 DEG C, obtains silver-colored appendix graphite
Alkene/silica aerogel particles.
Embodiment 2: difference from Example 1 is, the preparation packet of silver-colored appendix graphene/silicon dioxide aerogel particle
Include following steps:
(1) it disperses graphene oxide in n,N-Dimethylformamide, ultrasonic disperse 0.7h, obtaining graphene oxide concentration is
The graphene oxide dispersion of 15mg/100ml；
(2) 45g ethyl orthosilicate is dissolved in 100g deionized water, the hydrochloric acid solution and 10g of 4.3g 0.1mol/L is then added
Ethyl alcohol stirs 1.5h at 70 DEG C, obtains silicon dioxide gel；
(3) silicon dioxide gel that 70g step (2) is prepared is added to 190gN, in dinethylformamide, then plus
Enter 0.9g glycol fatty acid ester, 0.3g anhydrous sorbitol laurate and 0.4g propylene glycol, 0.8h mixing is stirred at 50 DEG C
After uniformly, the graphene oxide dispersion that 30ml step (1) is prepared is added, ultrasonic disperse 1h adds the ammonia of 20wt%
Water is 8 to pH, after stirring 30min, obtains graphene oxide/silica dioxide gel particle；
(4) graphene oxide/silica dioxide gel particle is placed in the mixed solution of 40g ethyl orthosilicate and 10g ethyl alcohol,
Aging 20-30h, is then dipped in acetone at 50 DEG C, carries out solvent displacement；
(5) graphene oxide/silica dioxide gel particle after aging and solvent displacement is placed in reaction kettle, is continually fed into two
Carbonoxide to pressure reaches 14Mpa, after extracting 13h at 40 DEG C, is down to room temperature, obtains graphene oxide/silica airsetting
Glue particle；
(6) ammonium hydroxide of 7wt% is slowly dropped into 2wt% silver nitrate solution, until the black precipitate generated completely disappears, is prepared
Obtain silver ammino solution；
(7) graphene oxide/silica aerogel particles are immersed in silver ammino solution, after mixing evenly in 150 DEG C of oil
20h is reacted down in bath, then cools down at room temperature, is washed with deionized and dries 12h at 80 DEG C, obtains silver-colored appendix graphite
Alkene/silica aerogel particles.
Embodiment 3: difference from Example 1 is, the preparation packet of silver-colored appendix graphene/silicon dioxide aerogel particle
Include following steps:
(1) it disperses graphene oxide in n,N-Dimethylformamide, ultrasonic disperse 1h, obtaining graphene oxide concentration is
The graphene oxide dispersion of 20mg/100ml；
(2) 50g ethyl orthosilicate is dissolved in 100g deionized water, the hydrochloric acid solution and 10g of 4.8g0.1mol/L is then added
Ethyl alcohol stirs 1h at 80 DEG C, obtains silicon dioxide gel；
(3) silicon dioxide gel that 60g step (2) is prepared is added to 170gN, in dinethylformamide, then plus
Enter 0.9g glycol fatty acid ester, 0.5g anhydrous sorbitol laurate and 0.36g propylene glycol, 0.5h mixing is stirred at 70 DEG C
After uniformly, the graphene oxide dispersion that 28ml step (1) is prepared is added, ultrasonic disperse 0.7h adds 15wt%'s
Ammonium hydroxide is 7.5 to pH, after stirring 20min, obtains graphene oxide/silica dioxide gel particle；
(4) graphene oxide/silica dioxide gel particle is placed in the mixed solution of 45g ethyl orthosilicate and 10g ethyl alcohol,
Aging 25h, is then dipped in acetone at 70 DEG C, carries out solvent displacement；
(5) graphene oxide/silica dioxide gel particle after aging and solvent displacement is placed in reaction kettle, is continually fed into two
Carbonoxide to pressure reaches 12Mpa, after extracting 15h at 50 DEG C, is down to room temperature, obtains graphene oxide/silica airsetting
Glue particle；
(6) ammonium hydroxide of 10wt% is slowly dropped into 2wt% silver nitrate solution, until the black precipitate generated completely disappears, is made
It is standby to obtain silver ammino solution；
(7) graphene oxide/silica aerogel particles are immersed in silver ammino solution, after mixing evenly in 170 DEG C of oil
Bath is lower to react 18h, then cools down at room temperature, is washed with deionized and drying for 24 hours, obtains silver-colored appendix graphite at 60 DEG C
Alkene/silica aerogel particles.
Comparative example 1: the difference from embodiment 1 is that, the glycol fatty acid ester and anhydrous sorbitol laurate
Additive amount is respectively that the additive amount mass ratio of 0.3g and 0.6g, i.e. glycol fatty acid ester and anhydrous sorbitol laurate are
0.5:1。
Comparative example 2: the difference from embodiment 1 is that, the glycol fatty acid ester and anhydrous sorbitol laurate
Additive amount is respectively that the additive amount mass ratio of 0.7g and 0.2g, i.e. glycol fatty acid ester and anhydrous sorbitol laurate are
3.5:1。
Comparative example 3: the difference from embodiment 1 is that, the graphene oxide/silica aerogel particles are without silver
The load of particle.
Embodiment 1 is respectively placed in SOF from the adsorbent material that different comparative examples are prepared at normal temperature2、SO2F2、SO2
In the mixed gas of nitrogen, wherein SOF2、SO2F2And SO2The volume of three kinds of gas molecules accounts for the 10% of mixed gas volume,
After adsorbing 1h, the data obtained is as shown in the table.
By upper table data it is found that comparative example 1 and comparative example 1 and 2, when glycol fatty acid ester and the anhydrous sorbitol moon
When the mass ratio of cinnamic acid ester is excessive or too small, it is easy to cause the unstable of lotion, influences graphene oxide/silica dioxide gel
The regulation of grain granular size and porosity leads to the decline of last adsorbance to affect the appendix of subsequent silver.
Comparative example 1 and comparative example 3 can greatly increase SF it is found that after appendix silver6The absorption of gas decomposition product.
Claims (10)
1. a kind of SF6Full-automatic vacuum-pumping inflates cart, which is characterized in that inflates including cart ontology, pumped vacuum systems and level pressure
System, the cart ontology include controller and bearing platform, and the level pressure inflation system includes SF6Gas cylinder, shut-off valve, filtering
Device, pressure sensor, pressure reducing valve, solenoid valve and gas storage surge tank, are connected using pipeline each other, the SF6Gas cylinder and pipe
The connection of road air inlet, the conduit air inlet end setting filter, pressure sensor and pressure reducing valve, the pipeline outlet port are set
Pressure sensor, gas storage surge tank and solenoid valve are set, the shut-off valve is arranged in the duct, to control the connection of pipeline, institute
Stating pumped vacuum systems includes vacuum pump, vacuum meter and shut-off valve, the pipeline connection of described shut-off valve one end and inflation system, one end
It is connect with vacuum meter, the other end of vacuum meter is controlled to a vacuum pump, and the outlet port of the vacuum pump is equipped with absorber, described true
Sky pump and gas storage surge tank are set on bearing platform, the controller and shut-off valve, solenoid valve, pressure sensor and vacuum pump circuit
Connection vacuumizes or the opening and closing of inflated condition to control.
2. a kind of SF according to claim 16Full-automatic vacuum-pumping inflates cart, which is characterized in that the pressure reducing valve is set to
On controller.
3. a kind of SF according to claim 1 or 26Full-automatic vacuum-pumping inflates cart, which is characterized in that the cart sheet
The top of body is equipped with SF6Gas cylinder limited block, the limited block is equipped with and SF6The half round cut of gas cylinder shape cooperation.
4. a kind of SF according to claim 36Full-automatic vacuum-pumping inflates cart, which is characterized in that the cart ontology
Bottom is equipped with SF6Gas cylinder bearing block.
5. a kind of SF according to claim 46Full-automatic vacuum-pumping inflates cart, which is characterized in that sets on the bearing block
Have and SF6The circular recess of gas cylinder shape cooperation.
6. a kind of SF according to claim 1 or 26Full-automatic vacuum-pumping inflates cart, which is characterized in that the cart sheet
Body is equipped with handrail.
7. a kind of SF according to claim 1 or 26Full-automatic vacuum-pumping inflates cart, which is characterized in that the cart sheet
Two side bottom of body is equipped with idler wheel.
8. a kind of SF according to claim 1 or 26Full-automatic vacuum-pumping inflates cart, which is characterized in that the absorber
It is provided with silver-colored appendix graphene/silicon dioxide aerogel particle.
9. the preparation method of silver-colored appendix graphene/silicon dioxide aerogel particle according to claim 8, which is characterized in that
Including following preparation step:
(1) it disperses graphene oxide in n,N-Dimethylformamide, ultrasonic disperse 0.5-1h, obtains graphene oxide dispersion
Liquid；
(2) ethyl orthosilicate is dissolved in deionized water, the hydrochloric acid solution and ethyl alcohol of 0.1mol/L is then added, at 50-80 DEG C
Lower stirring 1-2h, obtains silicon dioxide gel；
(3) silicon dioxide gel that step (2) is prepared is added into n,N-Dimethylformamide, ethylene glycol is then added
Aliphatic ester, anhydrous sorbitol laurate and propylene glycol stir 0.5-1h after mixing at 40-70 DEG C, and step is added
(1) graphene oxide dispersion being prepared, ultrasonic disperse 0.5-1h, add the ammonium hydroxide of 10wt-20wt% to pH be 7-8,
After stirring 10-30min, graphene oxide/silica dioxide gel particle is obtained；
(4) graphene oxide/silica dioxide gel particle is placed in aged solution, the aging 20-30h at 50-90 DEG C, then
It is dipped in acetone, carries out solvent displacement；
(5) graphene oxide/silica dioxide gel particle after aging and solvent displacement is placed in reaction kettle, is continually fed into two
Carbonoxide to pressure reaches 8-14Mpa, after extracting 10-15h at 40-60 DEG C, is down to room temperature, obtains graphene oxide/dioxy
SiClx aerogel particle；
(6) ammonium hydroxide of 5wt-10wt% is slowly dropped into silver nitrate solution, until the black precipitate generated completely disappears, is prepared
Obtain silver ammino solution；
(7) graphene oxide/silica aerogel particles are immersed in silver ammino solution, after mixing evenly at 150-180 DEG C
Oil bath under react 15-20h, then cool down, be washed with deionized and the dry 12-24h at 60-80 DEG C at room temperature, obtain
To silver-colored appendix graphene/silicon dioxide aerogel particle.
10. the preparation method of silver-colored appendix graphene/silicon dioxide aerogel particle according to claim 9, which is characterized in that
Glycol fatty acid ester described in step (3) and anhydrous sorbitol laurate mass ratio are 1-3:1.
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| CN113122190A (en) * | 2021-03-24 | 2021-07-16 | 武汉工程大学 | Aerogel composite material and preparation method thereof |
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