86 results about "Sulphur Hexafluoride" patented technology

The invention discloses an enamine pentafluorosulfhydrylation method using sulfur hexafluoride as a pentafluorosulfenyl source, which comprises the following steps: placing a photocatalyst and an alkaline additive in a reaction device, replacing air in the reaction device by using sulfur hexafluoride gas, adding enamine substances and a solvent in the atmosphere of the sulfur hexafluoride gas, and reacting at the temperature of 60-80 DEG C for 1-2 hours to obtain the enamine pentafluorosulfhydrylation product. Sealing the reaction device, carrying out photocatalytic reaction under a light source with the wavelength of 380-400nm, and then adding hydrochloric acid to obtain the pentafluorosulfenyl product. According to the method, the sulfur hexafluoride is used as a safe and cheap pentafluorosulfenyl reagent and acts with specific enamine substances to prepare the high-added-value organic pentafluorosulfenyl group-containing small molecules, the sulfur hexafluoride is ingeniously used as a fluorination reagent in the method, so that the pentafluorosulfenyl reaction is safely, economically and mildly carried out, and the yield of the pentafluorosulfenyl group-containing small molecules is improved. Meanwhile, wide substrate compatibility is shown, so that a green and efficient new way is provided for chemical synthesis in the field.

The invention discloses a 10KV sulfur hexafluoride switch cabinet which comprises a cabinet body, a gas box is arranged in the cabinet body, a mechanism chamber is arranged on the gas box, an electric control chamber is arranged on the mechanism chamber, an operating mechanism is arranged in the mechanism chamber, a three-phase high-voltage switch assembly is arranged in the gas box, and the three-phase high-voltage switch assembly is connected with the operating mechanism. A wire inlet sleeve and a wire outlet sleeve which are matched with each phase of high-voltage switch assembly are arranged on the gas box, the wire inlet sleeve is arranged on the gas box in an inverted mode, a first cylindrical contact is fixedly arranged in the wire inlet sleeve in a sleeved mode, copper-tungsten alloy of a spiral structure is embedded in the inner circumferential wall of the first cylindrical contact, a copper wire inlet rod is vertically inserted in the first cylindrical contact, and a wire outlet rod is arranged on the wire inlet sleeve. A heat dissipation box is arranged at the upper end of the gas box, a pressure relief device is arranged at the upper end of the heat dissipation box, the heat dissipation box and the gas box are internally communicated to form a closed cavity, the closed cavity is filled with sulfur hexafluoride gas, an inflation and measurement integrated pressure gauge is mounted on the gas box, and heat dissipation fins are paved on the outer surfaces of the gas box and the heat dissipation box. The heating value can be reduced, efficient heat dissipation is achieved, and the reliability of the switch cabinet is improved.

The invention discloses an environment-friendly gas ring main unit with a gas leakage alarm function, and belongs to the technical field of gas ring main units, the environment-friendly gas ring main unit with the gas leakage alarm function comprises a ring main unit body, the ring main unit body comprises a normal pressure cavity and a sealing cavity, the sealing cavity is filled with environment-friendly gas sulfur hexafluoride, and the normal pressure cavity is communicated with the normal pressure cavity. An emergency box is arranged on the side wall of the ring main unit body, a placement groove is formed in the side wall of the side, away from the ring main unit body, of the emergency box, the side wall of the air storage tank communicates with an air outlet pipe, and an emergency structure is arranged in the sealing box. The emergency box is arranged on the side wall of the ring main unit body, so that after the ring main unit body accidentally leaks gas, an emergency structure in the emergency box can be triggered to warn workers, environment-friendly gas is supplemented into the sealing cavity of the ring main unit body, and if external oxygen enters the sealing cavity, the sealing cavity is sealed by the sealing cavity. And oxygen can be consumed through chemical reaction, so that the safety of workers during maintenance of the ring main unit body is ensured.

The invention discloses a sulfur hexafluoride degradation catalyst as well as a preparation method and application thereof in catalytic degradation of SF6 (sulfur hexafluoride). The preparation method comprises the following steps: (1) adding pseudo-boehmite and / or cerous nitrate into deionized water to be fully dissolved, and stirring to be in an emulsion or solution state; sequentially adding phosphoric acid, a silicon source and a template agent while stirring, and adjusting the pH value of the mixed solution to 5.0-6.5; (2) stirring and evaporating moisture in the mixed solution obtained in the step (1), and further drying to obtain dry glue; grinding the dry glue, putting the ground dry glue into a crystallization kettle, crystallizing at 200-210 DEG C, washing a crystallized product to be neutral, drying, and calcining to remove the template agent, so as to obtain the Al and / or Ce doped SF6 degradation catalyst. The catalyst is used for catalytic degradation of sulfur hexafluoride and is low in catalytic temperature, excellent in degradation effect, excellent in SO2 selectivity, small in product harm, easy to treat, simple in catalyst preparation process and low in use cost.

A high-voltage sulfur hexafluoride circuit breaker driving structure disclosed by the present invention comprises a machine body, the upper end of the machine body is fixedly connected with three ceramic arc extinguish chambers, the middle position of the bottom end of the machine body is fixedly connected with a distribution box, and the bottom ends in the ceramic arc extinguish chambers are in bolted connection with mounting seats. And separation guide rods are connected into the mounting seats in an up-down sliding manner. According to the invention, intelligent separation and reunion of energy storage motor drive and the transmission shaft are realized through the separator structure, connection with the energy storage motor is automatically disconnected during opening, and the problem of resistance caused by reverse rotation of a motor rotor in a traditional structure is thoroughly avoided, so that the opening speed and the action reliability are remarkably improved, and current can be rapidly cut off when a power grid has a fault; the system has double modes of automatic energy storage and manual operation of the energy storage motor, can be remotely controlled and can be manually and emergently operated on site, so that the applicability and the emergency processing capability of the equipment under different working conditions are greatly enhanced, and the system is particularly suitable for guaranteeing the stability of the system in a power-off or fault state.

The utility model discloses a foldable sulfur hexafluoride inflating and vacuumizing device which comprises a foldable frame and a sulfur hexafluoride inflating and vacuumizing system arranged on the frame, the frame comprises a fixed frame at the lower part and a rotary folding frame at the upper part, and the fixed frame and the rotary folding frame are rotationally connected through a rotary assembly to realize the folding of the rotary folding frame; the fixing clamp assembly is used for fixing the rotary folding frame on the fixing frame; the sulfur hexafluoride inflating and vacuumizing system comprises a sulfur hexafluoride inflating module and a vacuumizing module which are used for inflating the air chamber of the high-voltage switch equipment, and the sulfur hexafluoride inflating and vacuumizing operation is realized. According to the foldable sulfur hexafluoride inflating and vacuumizing device, the vertical height of equipment is reduced, and the phenomenon that parts are damaged due to oil leakage of an important part vacuum pump when the equipment is horizontally placed in a carriage for transportation is avoided.

The invention relates to the technical field of sulfur hexafluoride (SF6) gas thermocatalytic degradation, and discloses an SF6 dynamic degradation device which comprises a gas feeding unit, a reaction unit and a product post-treatment unit, and the reaction unit is a vertical reaction tube arranged vertically. A catalyst supporting component is arranged in the reactor, the catalyst supporting component is annular, and holes for gas to penetrate through are formed in the catalyst supporting component. According to the invention, the gas feeding unit, the reaction unit and the product post-treatment unit are integrated, and the reaction tube is arranged to be vertical, so that gas can uniformly move downwards under the assistance of gravity, the catalytic efficiency is further improved, the integrality of the device is improved due to high integration, and the overall movement and convenient use of the device are facilitated.

The application discloses an environment-friendly gas ring main unit with a gas leakage alarm function and belongs to the technical field of gas ring main units. The environment-friendly gas ring main unit with the gas leakage alarm function comprises a ring main unit body, wherein the ring main unit body comprises a normal-pressure cavity and a sealed cavity, the sealed cavity is filled with environment-friendly gas hexafluoride sulfur, an emergency box is arranged on the side wall of the ring main unit body, a placing groove is formed in the side wall of the emergency box away from the ring main unit body, a gas outlet pipe is in communication with the side wall of a gas storage tank, and an emergency structure is arranged in the sealed box. The emergency box arranged on the side wall of the ring main unit body can trigger the emergency structure in the emergency box after accidental gas leakage of the ring main unit body, thereby warning the staff and supplementing the environment-friendly gas in the sealed cavity of the ring main unit body. If the oxygen in the outside world enters the sealed cavity, the oxygen can be consumed through a chemical reaction, thereby ensuring the safety of the staff when repairing the ring main unit body.

The invention discloses a preparation method and application of a vanadium-doped titanium dioxide composite material, and relates to the technical field of titanium dioxide composites.The preparation method comprises the following steps that 1, ammonium vanadate and titanium dioxide are mixed in proportion, the doping amount of the vanadium element is controlled to range from 0.1 wt% to 12.5 wt% according to the total mass of the mixture, then high-temperature heating is conducted, and a mixture is obtained; vanadium-doped titanium dioxide powder is obtained; and (2) mixing the vanadium-doped titanium dioxide powder with a carrier in proportion, controlling the content of the vanadium-doped titanium dioxide powder to be 10-30 wt% based on the total mass of the composite material, and carrying out physical grinding to obtain the powdery vanadium-doped titanium dioxide composite material. The catalytic material disclosed by the invention is applied to degradation of sulfur hexafluoride and has excellent degradation capability.

The utility model belongs to the technical field of power equipment, and discloses an outdoor three-phase sulfur hexafluoride load switch, which comprises a switch piece, an arc extinguishing medium piece is arranged at the top of the switch piece, a support piece is arranged at the bottom of the switch piece, the support piece comprises a base tube, the top of the base tube is fixedly connected to the bottom of the switch piece, and the arc extinguishing medium piece is arranged on the base tube. The base pipe is fixedly connected with the base pipe, the bottom of the base pipe sinks inwards to form a second screw hole, a screw rod is connected to the interior of the second screw hole in a screwed mode, the bottom of the screw rod is fixedly connected with an extension rod, the bottom of the extension rod sinks inwards to form a first screw hole, and the first screw hole is matched with the screw rod. The extension rods with the number required by personnel are connected end to end, and then the extension rods with the length adjusted are connected with the second screw holes in a screwed mode through the screws, so that the extension rods with the length adjusted are connected with the base pipe, the fixing height of the device can be adjusted, and the use range of the device is widened.

1. The name of the design product: portable gas collection device (full automatic). 2. The use of the design product: for sampling of sulfur hexafluoride gas of electrical equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to a circuit-breaker (1), comprising a gas compression arrangement (4) configured for compressing a quenching gas to be contained therein and which quenching gas is free of sulphur hexafluoride; a first contact (20) and a second contact (30) movable relative to one another along a switching axis (2); a nozzle (40) providing an inflow channel (IN) connecting the gas compression arrangement (4) to an arc zone (3), the inflow channel (IN) constituting a minimal inflow area to be passed by the quenching gas, the nozzle (40) radially restricting the arc zone (3) between the first contact (20) and the second contact (30); wherein, for the quenching gas to exit the arc zone (3), the circuit-breaker (1) provides at least one outlet (OUT1, OUT2) constituting a minimal outflow area, and the minimal inflow area divided by the minimal outflow area defines an inflow- outflow-ratio being at least 0.5.

The invention discloses a bismuth oxide-bismuth sulfide heterojunction capable of photocatalytic conversion of sulfur hexafluoride and a preparation method and application thereof, and the preparation method comprises the following steps: taking bismuth nitrate as a raw material, taking a mixed solution of ethanol and ethylene glycol as a solvent, and carrying out solvothermal reaction to obtain Bi2O3 nanosheets; the preparation method comprises the following steps: by taking bismuth nitrate and sodium sulfide as raw materials and a mixed solution of ethylene glycol and water as a solvent, reacting in a hydrothermal reaction device to obtain a Bi2S3 nanorod; the preparation method comprises the following steps: mixing a Bi2O3 nanosheet, a Bi2S3 nanorod and ethanol, and reacting in the presence of illumination to obtain the heterojunction. According to the invention, the Bi2O3-Bi2S3 heterojunction is prepared by a simple photodeposition method, the operation is simple, and the prepared heterojunction can be used for photocatalytic conversion of SF6 into 1-fluoropropylene and nitrile fluoride under normal pressure and light radiation; the established using method for photocatalytic conversion of SF6 is simple in condition, good in stability, environment-friendly and sustainable.

The invention discloses an adjustable sulfur hexafluoride density meter which comprises a body, two reinforcing plates are fixedly connected to the outer surface of the body, connecting plates are fixedly connected to the side faces, away from each other, of the two reinforcing plates, and a shell is fixedly connected to the upper surface of each connecting plate. The upper surface of each shell is fixedly connected with a first clamping plate, and the inner wall of each shell is slidably connected with a sliding plate. Through the design of a rolling bearing, a threaded cylinder can rotate in the rolling bearing conveniently during use, then a sliding plate can be driven to move in the shell conveniently through cooperation of the threaded cylinder and a threaded rod, and at the moment, according to the connection relation between a second clamping plate and the sliding plate, the second clamping plate can get close to a first clamping plate conveniently; and through the design of a second clamping plate and a first clamping plate, the body can be conveniently supported, meanwhile, the stability of the body can be improved, the problem of leakage at the joint of the body is avoided, and current use is facilitated.

The utility model relates to the technical field of ring main units, and discloses a ring main unit capable of preventing gas leakage, which comprises a cabinet body, a cabinet door and a handle, the two sides of the lower part of the cabinet body are connected with the cabinet door through a first rotating shaft, the outer wall of the cabinet door is provided with the handle, the two sides of the interior of the cabinet body are provided with inflation bins, and the inflation bins are connected with the cabinet door through a second rotating shaft. A sulfur hexafluoride sensor is installed on one side of the inner wall of the inflation bin, a second sealing strip is arranged on the inner side of the cabinet door, a first sealing strip is arranged on the outer side of the second sealing strip and installed on the inner side of the cabinet body, an air inlet structure is installed above the inflation bin, a plate body is installed above the air inlet structure, and a gas outlet structure is installed above the plate body. An exhaust structure is mounted above the plate body; according to the device, sulfur hexafluoride gas is quickly discharged into the gas charging bin, so that the working efficiency of the device is improved, the condition that the sulfur hexafluoride gas is remained in the gas inlet structure is reduced, and the safety of the device is improved.

The invention discloses a gas tank device of an environment-friendly gas-filled switch cabinet, and relates to the technical field of intelligent power grid power transformation and high-voltage power transmission and distribution, the gas tank device comprises a top expansion bus gas chamber (23) formed by welding stainless steel plates, the top expansion bus gas chamber (23) is of a full-sealed structure, and environment-friendly gas with the pressure not exceeding 0.05 MPa is filled into a full-sealed gas filling device (25); a high-voltage live part is packaged in the full-sealed inflation device (25) and comprises a three-station isolating / grounding switch (13), a vacuum circuit breaker (15), a bus of a copper bar structure and a high-voltage live conductor insulating sleeve. The conductors in the air chamber equipment are subjected to electric field optimization design, silver plating and polishing, the insulation performance of a primary part can be ensured, and the reliability and the stability of the air chamber equipment are equivalent to those of sulfur hexafluoride inflation equipment.

The invention relates to a gas insulation technology of an electric power system, in particular to a mixed insulating gas containing perfluorodimethyl sulfide and application of the mixed insulating gas. The insulating mixed gas is composed of a component 1 and a component 2, and the component 1 is perfluoromethyl sulfide; and the component 1 is 1, 1, 2, 2-tetrafluoroethane, 2, 3, 3, 3-tetrafluoropropene and 1, 1-difluoroethane, and the component 2 is 1, 1, 2, 2-tetrafluoroethane, 2, 3, 3, 3-tetrafluoropropene and 1, 1-difluoroethane. The insulating mixed gas provided by the invention has the insulating property equivalent to or even more excellent than that of sulfur hexafluoride, has a lower GWP value, and is particularly suitable for gas-insulated electrical transformers, gas-insulated wires for transmitting or distributing electric power, or connectors / disconnectors in the middle-high voltage field. The mixed gas disclosed by the invention has the characteristics similar to that of single gas, and the liquefaction temperature of the insulating mixed gas is lower than that of each component; and the mixed gas also has an insulating synergistic effect, and has the advantages of low GWP, low toxicity, low boiling point and high insulating strength.

This invention relates to the field of gas monitoring technology for combined electrical appliances, and particularly to an installation device for gas monitoring of a sulfur hexafluoride (SF6) sealed combined electrical appliance. The device includes a structural assembly comprising a structural member and a monitoring member disposed on one side of the structural member. A clamping assembly includes an insert disposed on one side of the monitoring member, a rotating member disposed inside the structural member, and a clamping member disposed inside the structural member. The rotating member includes a rotating ring rotatably disposed within a mounting block and an arc-shaped protrusion disposed on the outer surface of the rotating ring. The clamping member includes a fixing ring disposed inside the mounting block, and further includes a sliding frame slidably disposed outside the fixing ring and an arc-shaped clamping plate disposed on one side of the sliding frame. This invention, through the coordinated use of the clamping assembly, including the insert disposed on one side of the monitoring member, the rotating member disposed inside the structural member, and the clamping and clamping members disposed on one side of the structural member, facilitates the quick and easy fixing of a pressure sensor to one side of the mounting plate, enabling rapid installation and disassembly.

The present invention discloses a method for preparing a C-C bond coupling product from an enol silyl ether compound and the application of SF6, belonging to the technical field of organic photochemistry. In this method, an enol silyl ether compound and sulfur hexafluoride undergo a photochemical reaction at room temperature under the action of a light source and a photocatalyst to form a C-C bond coupling product; wherein the photocatalyst is N-phenylphenothiazine (PTH); and the light source is ultraviolet light with a wavelength of 365nm. Beneficial effects: This method utilizes sulfur hexafluoride to promote C-C bond coupling, and the reaction product is a 1,4-dicarbonyl compound that can be used in the synthesis and production of hybrid compounds such as pyrrole and furan; the reaction conditions are mild, and the raw materials are simple and readily available, thus having potential application value.

The utility model discloses an SF6 and O2 two-in-one infrared detection device, and relates to the SF6 detection device technology field, the SF6 and O2 two-in-one infrared detection device comprises a pedestal, a sulfur hexafluoride sensor and an oxygen sensor, a telescopic rod is installed in front of the pedestal, a first joint is installed between the pedestal and the telescopic rod, a mounting plate is installed in front of the telescopic rod, and a second joint is installed in front of the mounting plate. A second joint is mounted between the telescopic rod and the mounting plate, a groove is formed in the edge of the rear side of the base, the four corners of the bottom of the base are each movably connected with an extending supporting foot through a damping rotating shaft, and the extending supporting feet are located in the groove; by forming bolt holes in the base, the device can be installed and used in a wall-hung mode, by additionally arranging four extension supporting legs capable of being folded and stored, the device can be placed and used in a floor mode, during the period, the angles and the positions of the installation plate, the sulfur hexafluoride sensor and the oxygen sensor can be adjusted through a first joint, a telescopic rod and a second joint, and the device is wide in applicability and convenient to use. The system can be applied to different scene requirements and is very convenient to use.

The present invention provides an electric power basic resource management and control system, which belongs to the technical field of electric power basic resource management and control; in order to solve the technical problem that the speed of sulfur hexafluoride filling the cavity of the existing high-voltage circuit breaker during arc extinguishing control is slow, resulting in a long arc extinguishing time, the technical solution adopted is: a lower contact copper sleeve is installed inside the inner main sleeve, and an upper contact sleeve is connected to the inner side of the lower contact copper sleeve, and an insulating connection part is fixedly provided at the bottom of the upper contact sleeve; a connection part side hole is opened on the surface of the insulating connection part, and an insulating connecting rod is extended from the bottom into the connection part side hole and slidably connected to the insulating connection part; a lifting pressure plate is also fitted on the bottom of the cavity of the inner main sleeve, and a pressure plate top groove is opened on the top of the lifting pressure plate, and a top groove slider is slidably connected in the groove of the pressure plate top groove, and the bottom of the insulating connection part and the top groove slider are connected by a linkage structure; the present invention is applied to arc extinguishing control of the distribution network.

This invention relates to a sulfur hexafluoride (SF6) insulated ring main unit and its power distribution system, comprising a ring main unit power distribution platform, a ring main unit information database, a ring main unit operating condition unit, a power distribution interference unit, a ring network allocation unit, a power control unit, and a power distribution management unit. This invention analyzes the power distribution stability performance of the target ring main unit from two aspects: its operating characteristics and operating parameters. It also analyzes the degree of SF6 gas interference in the target ring main unit to improve its operational stability and continuity. Furthermore, it conducts a risk analysis of the ring network allocation performance based on the operating condition information of the target ring main unit through information feedback, thereby improving the safety and reliability of its power distribution performance. Finally, it performs a power adjustment demand assessment analysis on the power management data to adjust the load allocation scheme of the target ring main unit based on the information feedback, improving the rational allocation of power resources and the operating efficiency of the power grid.

The present invention relates to a dry etching method for manufacturing a groove structure of a semiconductor device. The dry etching method comprises the following steps: Step 1: providing a semiconductor substrate. A patterned photoresist layer is arranged on the semiconductor substrate and placed in a reaction chamber. Step 2: introducing a first etching gas into the reaction chamber to perform a first etching method to form a groove. The first etching gas comprises sulfur hexafluoride, oxygen, helium, nitrogen trifluoride and a first organic silicon compound. Step 3: introducing a second etching gas into the reaction chamber to perform a second etching method to etch the groove downward. The second etching gas comprises sulfur hexafluoride, oxygen, helium and a second organic silicon compound. Step 4: introducing a third etching gas into the reaction chamber to perform a third etching method. The third etching gas comprises hydrobromic acid, oxygen and helium.

The utility model relates to the field of electrical equipment, and particularly discloses a sulfur hexafluoride load switch mounting structure. The load switch mounting structure comprises a cabinet body, a mounting plate fixedly mounted in the cabinet body and a switch shell mounted on the inner side of the mounting plate, the switch shell comprises an upper shell and a lower shell, the mounting plate is provided with a mounting groove for mounting the lower shell, and the upper shell is fixedly mounted on the upper side of the lower shell. Limiting pieces used for limiting the lower shell are installed at the two ends of the installation plate, a positioning piece used for fixing the lower shell is installed at the other end of the installation plate, and a driving piece used for driving a main shaft on the inner side of the lower shell is fixedly installed on one side of the cabinet body. According to the invention, through the limiting member and the positioning member, rapid limiting and limiting releasing operation of the lower housing can be realized, so that an operator can mount and dismount the load switch more conveniently, and tedious operation of tightening or loosening bolts one by one can be avoided, thereby improving the mounting and dismounting efficiency of the load switch.

1. The name of this design product: Density micro-water transmitter. 2. Purpose of the product with this design: This product is used as a density and micro-water transmitter on sulfur hexafluoride high-voltage electrical equipment. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention provides a power basic resource management and control system, and belongs to the technical field of power basic resource management and control. In order to solve the technical problem of long arc extinguishing time caused by low speed of filling sulfur hexafluoride in a cavity during arc extinguishing control of an existing high-voltage circuit breaker, the adopted technical scheme is as follows: a lower contact copper sleeve is mounted in an inner main sleeve, an upper contact sleeve is connected to the inner side of the lower contact copper sleeve, and a lower contact copper sleeve is connected to the inner side of the upper contact sleeve; an insulating connecting part is fixedly arranged at the bottom of the upper contact sleeve; a connecting part side hole is formed in the surface of the insulating connecting part, and the insulating connecting rod extends into the connecting part side hole from the bottom to be in sliding connection with the insulating connecting part; a lifting pressing disc is further attached to the bottom in the cavity of the inner main sleeve, a pressing disc top groove is formed in the top of the lifting pressing disc, a top groove sliding block is slidably connected into the pressing disc top groove, and the bottom of the insulation connecting part is connected with the top groove sliding block through a linkage structure. The method is applied to arc extinguishing control of the power distribution network.

The utility model relates to a gas separation device, and relates to the field of gas recovery technology, the gas separation device comprises a waste gas storage bin, the waste gas storage bin is communicated with a waste gas recovery pipeline, the gas inlet end of the waste gas recovery pipeline is communicated with the gas outlet end of a container filled with waste gas, and the waste gas recovery pipeline is provided with a first gas pump; the waste gas storage bin is communicated with a waste gas treatment pipeline, the gas outlet end of the waste gas treatment pipeline is communicated with a membrane separator, the membrane separator is communicated with a first gas outlet pipeline and a second gas outlet pipeline, the second gas outlet pipeline is communicated with a sulfur hexafluoride storage tank, and the first gas outlet pipeline is provided with a first valve; a second valve is mounted on the second gas outlet pipeline; a third valve is mounted on the waste gas treatment pipeline; a temperature compensation module and an air pressure compensation module are mounted on the waste gas treatment pipeline. According to the invention, the separation effect of nitrogen and sulfur hexafluoride can be guaranteed.

The application discloses a method for preparing fluorine-containing diphenylmethane compounds by using sulfur hexafluoride as a fluorination reagent, and belongs to the technical field of organic chemical synthesis. The preparation method comprises the following steps: (1) mixing a photocatalyst, a solvent and a reducing agent, and performing ultrasonic treatment to obtain solution A; mixing a reaction substrate and the solvent to obtain solution B; the photocatalyst is one or more of 4CzIPN, Ir[dF(CF3)ppy]2(dtbpy))PF6, 9-thioxanthone and 10-phenylphenothiazine; the reaction substrate is a compound with a structural formula of R1 and R2 are both H, alkoxy or halogen; (2) mixing the obtained solution A and solution B in a sulfur hexafluoride gas atmosphere, and performing reaction under blue light illumination, and the fluorine-containing diphenylmethane compounds are obtained. The method has the beneficial effects that the fluorine-containing diphenylmethane compounds are efficiently prepared by using sulfur hexafluoride as the fluorination reagent, and by selecting raw materials and catalysts with certain proportions; the reaction raw materials are cheap; the preparation process is safe, mild, has good substrate compatibility and high preparation efficiency.

The present invention provides a sulfur hexafluoride nitrogen fusion medium isolation device and electrical equipment. The sulfur hexafluoride nitrogen fusion medium isolation device includes a moving contact assembly and a static contact assembly. The static contact assembly includes a static contact seat and a static contact. A connecting cavity facing the moving contact assembly is formed in the static contact seat. The static contact is connected to the bottom of the connecting cavity and extends toward the moving contact assembly. One end of the static contact close to the moving contact assembly protrudes from the static contact seat. The moving contact assembly has a disconnection position and a connection position relative to the static contact assembly. When the moving contact assembly is in the disconnection position, the moving contact assembly and the static contact are separated from each other. When the moving contact assembly is in the connection position, at least part of the structure of the moving contact assembly extends into the connection cavity and contacts and conducts with the static contact. In this way, it can be applied to electrical equipment using a fusion medium of sulfur hexafluoride and nitrogen. The proportion of sulfur hexafluoride is smaller, and it is more low-carbon and environmentally friendly while ensuring the electrical life.

The application relates to a preparation method of a novel microporous copper-based metal organic framework material (Cu-MOF) and gas separation application thereof. Cu metal centers are all in a four-coordination mode, each independent Cu atom is coordinated with one oxygen atom on a BODC ligand, carboxyl O atoms on the BODC ligand all participate in coordination, and a propeller binuclear coordination geometry of the Cu-MOF is formed; wherein each BODC ligand acts as a four-connected node and is connected with four crystallographically independent Cu centers, and the carboxyl on the BODC ligand is connected and supported, and the bridge ring in the middle section contains rich methylene groups, and the rich H atoms can all act as potential action sites. The regularly arranged BODC ligands in the Cu-MOF channel provide hydrogen bond acceptors, which are favorable for strengthening the action force between low-carbon hydrocarbon gas molecules and the framework, so that the effects of preferentially adsorbing acetylene, ethane, propylene, propyne and sulfur hexafluoride gas in acetylene / carbon dioxide, ethane / ethylene, propylene / ethylene, propyne / propylene, sulfur hexafluoride / nitrogen and other mixed gases are realized.