95 results about "Sulphur Hexafluoride" patented technology

The invention relates to a method and a device utilizing sulphur hexafluoride pressure oscillation to judge the failure of high-voltage sulphur hexafluoride electric installation. The method comprises the following steps: a sensor which is installed in an SF6 chamber of the equipment in advance and a digital signal processing device consisting of a later-period circuit detect the gas change condition in the chamber so as to obtain information of inside pressure, temperature raising, humidity, and the like; once gas failure occurs inside the equipment to cause certain item or a plurality of items of parameters to raise to a certain limit, the digital signal processing device can send out an alarm signal to prompt the possible occurrence of equipment failure, therefore, failure can be discovered in the earlier period. The digital signal processing device used for realizing the method comprises a signal conditioning module, a main control module and an output display module, can monitor the valuable state parameters of the SF6 gas, has the advantages of simple and reliable structure, little interference, good economical efficiency, high application value, and the like, and meets the actual need of the electric power system and the requirements of the development of modern industry.

An electric device, in particular for medium or high voltage electric substations, able to perform the functions of circuit-breaking, isolating and earthing is described. The device comprises: a casing; at least one circuit-breaker; at least one line isolator having a fixed isolator contact; a line isolator actuating shaft for actuating the at least one line isolator; at least one earthing isolator; a circuit-breaker actuating shaft for actuating at least one circuit-breaker; and a lever connected to a conductor rod co-operating with movable circuit-breaker contacts, said conductor rod further engaging with said fixed isolator contact in a closing position, wherein: the device further comprises a resilient member co-operating with said conductor rod in order to transfer correct pressing loads to said movable contacts. According to the invention, said circuit-breaker actuating shaft and said line isolator actuating shaft are coaxial. Profitably, the casing is filled with nitrogen or sulphur hexafluoride.

The invention relates to a high-temperature single-phase solid-solution magnesium rare earth base alloy of which the chemical composition is Mg-xRE-y(Zn+Sc)-z(Ag+Zr), wherein x is more than or equal to 0.5 and less than or equal to 3.0, y is more than or equal to 0.1 and less than or equal to 1.5, z is more than or equal to 0.01 and less than or equal to 1.0 (wt%), and rare earth elements comprise Gd, Y, Dy, Er, Tm and Lu. A preparation method mainly comprises the following steps of: adding the raw materials into an automatic temperature-controlled resistance furnace, protecting the raw materials by using a mixed gas of sulfur hexafluoride and argon, smelting the raw materials at the temperature of 680-800 DEG C, pouring the melt in a steel mold at the temperature of 650-770 DEG C, fully preheating the steel mold at the temperature of 500-600 DEG C, insulating the steel mold in a 650-750 DEG C furnace for 30-120 min after pouring, and cooling the steel mold by using water to room temperature. The single-phase solid-solution magnesium rare earth base alloy provided by the invention has small grain size, good ductility, room temperature elongation coefficient exceeding 20%, excellent mechanical properties and processing properties and excellent corrosion resistance.

The invention relates to non-destructive test and overhaul equipment for power equipment, in particular to an endoscope and a manipulator device for the power equipment. The device comprises an endoscope probe, wherein the endoscope probe is connected with a display by a snake bone. The manipulator device is characterized by comprising a mechanical handle which is grab-shaped substantially, wherein a plurality of handle sections which form the mechanical handle are fixed on a top end symmetrically; the top end is shrunk into a sleeve and connected with a steel wire; the other end of the sleeve is connected with the snake bone; and the steel wire passes through the interior of the snake bone and is connected with a handle closing mechanism. The device has the advantages that: when a foreign matter falls into the equipment in the overhaul process of sulphur hexafluoride gas insulated switch (GIS) equipment, a portable electronic endoscope and a mechanical grabbing device can be used for finishing operation tasks of internal observation of the equipment and grabbing of the foreign matter cooperatively.

The invention discloses a working cylinder integrated with a control valve and a high-power hydraulic spring operating mechanism. The high-power hydraulic spring operating mechanism is used for an extra-high voltage and ultra-high voltage sulphur hexafluoride circuit breaker. According to the high-power hydraulic spring operating mechanism, the working cylinder is used as a matrix. The high-power hydraulic spring operating mechanism comprises an energy storage module, a control valve module and an oil tank module. The energy storage module is concentrically sleeved outside the working cylinder and is fixed; the control valve module is coaxially arranged in series inside the bottom of the working cylinder; the oil tank module is fixed on the upper end face of the working cylinder; an oil tank of the oil tank module is communicated with the working cylinder and the control valve by high and low voltage oil circuits and a signal oil circuit; and oil circuits are communicated and closed by the control valve module. Due to the working cylinder and the high-power hydraulic spring operating mechanism, the technical problem that the mode of arranging the control valve outside a conventional high-power hydraulic spring operating mechanism is changed into a mode of integrating the control valve inside the working cylinder is solved, so that the radial sealing with a better sealing effect is adopted to replace the axial sealing.

The present invention relates to a transformer bushing test equipment and its testing method. Under the condition of ensuring that the transformer component (specially, transformer oil-sulphur hexafluoride bushing) is normally mounted said invention makes said test. Said invention provides the concrete steps of said testing method by utilizing oil-air bushing and shielding case, etc. It can simultaneously test oil-SF6 bushing and transformer so as to ensure product quality and safety for use.

The invention provides a SF6 (sulphur hexafluoride) leakage plugging method of a GIS (Gas lnsulated Switchgear). When the leakage plugging method is used to plug leakage at a weld joint of a pipe, the method includes the steps that a joint punch is used to hammer, rivet and punch the leakage site, and the joint punch, selected according to the shape of the leakage site, is a blunt-tip joint punch, a flat-tip joint punch or a concave-tip joint punch. When the leakage plugging method is used to plug leakage at the wall of a cylindrical pipe, the method includes the steps that a can-shaped container which can be attached on the outer side of the pipe is made; the container is connected with the wall of the pipe through an annular hoop; the container and the wall of the pipe are cushioned and sealed by a rubber mat; pores are punched on the wall of the container; and the pores are plugged by fixing the container on the wall of the pipe through the loop. The method disclosed by the invention is simple and the devices are convenient to make. With the method, the SF6 leakage sites can be quickly plugged within a limited time without affecting the operation of equipment, so operation risk is reduced. The method is suitable for use in emergency maintenance and air leakage maintenance of the GIS.

The invention discloses a sulphur hexafluoride breaker having a heating protection device and capable of normally working in the outdoor circumstance having low temperature (below minus 30 DEG C). The breaker is provided with an insulating sealing shell (1) in which an upper insulating pull rod (2), a lower insulating pull rod (3) and an upper contact (4), a lower contact (5) respectively fixed at front ends of the insulating pull rod (2) and the lower insulating pull rod (3) are provided; a temperature sensing element (7) and an electrothermal element (8) are provided below a lateral insulating board (6) which is provided below the lower contact (5); bottom panel of the insulating sealing shell (1) is provided with a temperature sensing element binding post (9) connected with the temperature sensing element (7) and an electrothermal element binding post (10) connected with the electrothermal element (8); the temperature sensing element binding post (9) and the electrothermal element binding post (10) are connected with a temperature control circuit provided outside the insulating sealing shell (1).

The invention discloses an on-line monitoring device of the sulphur hexafluoride circuit breaker for knowing the operating state of the breaker and the rejected region in time, reducing the fault incidence rate, increasing the work efficiency of the breaker and safety, increasing the repair pertinence and reducing the maintenance cost. The monitoring device is provided with a vibration frequency sensor and the vibration frequency sensor is connected with a singlechip microcomputer IC by a signal processing circuit A and a display circuit and an alarm circuit are connected with the singlechip microcomputer IC.

The invention relates to the technical field of substation equipment, in particular to a mounting method a 750 KV tank type breaker, comprising following steps: step 101, hoisting a breaker tank body; step 102, hosting a breaker current transformer; step 103, hoisting a breaker bushing and mounting a wiring board; step 104, changing an adsorbent; step 105, inspecting leakage; step 106, evacuating; step 107, injecting sulfur hexafluoride gas. Through standard construction and full-course quality control, the hoisting problem of the 750 KV tank type breaker and the gas leakage problem are solved, and hosting is more stable and safer and accidents are avoided; through leakage inspection, gas leakage may be reduced, environmental pollution may be avoided, the damage of gas leakage to physical health of workers may be avoided, a work environment is safer and more humanized, mounting quality of the breaker is improved, the service life of the breaker is prolonged, and quality benefit is improved.

A bus connection device for switch device comprises a connection module with a first conductor, a second conductor connected with the first conductor and a solid coating part for covering the outer surfaces of the first conductor and the second conductor; a bus with a conductor and a solid coating part for covering the outer surface of the conductor and conductively inserted between the two opposite connection modules; and an insulation tube for covering the connection module and the connection part of the bus. Thus the installation and maintenance of the board can be quickened and facilitated and the insulation material (such as oil or sulphur hexafluoride) can be prevented from being used.

The invention provides a SF6 (sulphur hexafluoride) leakage plugging method of a GIS (Gas lnsulated Switchgear). When the leakage plugging method is used to plug leakage at a weld joint of a pipe, the method includes the steps that a joint punch is used to hammer, rivet and punch the leakage site, and the joint punch, selected according to the shape of the leakage site, is a blunt-tip joint punch, a flat-tip joint punch or a concave-tip joint punch. When the leakage plugging method is used to plug leakage at the wall of a cylindrical pipe, the method includes the steps that a can-shaped container which can be attached on the outer side of the pipe is made; the container is connected with the wall of the pipe through an annular hoop; the container and the wall of the pipe are cushioned and sealed by a rubber mat; pores are punched on the wall of the container; and the pores are plugged by fixing the container on the wall of the pipe through the loop. The method disclosed by the invention is simple and the devices are convenient to make. With the method, the SF6 leakage sites can be quickly plugged within a limited time without affecting the operation of equipment, so operation risk is reduced. The method is suitable for use in emergency maintenance and air leakage maintenance of the GIS.

The invention relates to a device used for controlling high electric field in synthetic insulating material and providing high-degree dielectric reliability and leak tightness. The invention provides an annular space (14) between the inner surface of a gate apparatus (12) and the central part (31) of large amount of dielectric medium insulating materials (13); wherein, the gate apparatus (12) inarches ground and surrounds a center conductor in a great measure (11); the great measure (11) and the gate apparatus (12) inlays in the large amount of dielectric medium insulating materials (13). The sulphur hexafluoride (SF6) which is a dielectric medium fluid or oil are filled in the annular space (14). The device used for controlling high electric field is applied in sealed and high-pressure electric bushing.

The invention discloses a preparation method of a metal titanium particle reinforced magnesium-based composite material. The preparation method mainly solves the problems that metal titanium particles are difficult to add and uneven in dispersion, and the comprehensive mechanical property of the magnesium-based composite material is poor. The magnesium alloy is melted in stirring equipment filled with carbon dioxide and sulfur hexafluoride protective gas, and then the titanium particle preforms or the aluminum foil coated titanium particle laminates are added, so that the burning loss of the titanium particles can be avoided. And then mechanical stirring, ultrasonic treatment and rapid cooling are applied, so that the titanium particles can be uniformly dispersed, and sedimentation of the titanium particles is avoided. And finally, the titanium particle reinforced magnesium-based composite material is subjected to hot extrusion deformation, and the titanium particles are further dispersed. The titanium particles can hinder grain size growth in the hot extrusion deformation process, and meanwhile the strength and plasticity of the composite material are improved. The titanium particles can also weaken the basal texture of the composite material, and the plasticity of the composite material is effectively improved. Compared with a matrix alloy, the magnesium-based composite material prepared by the method has higher strength and plasticity.

The invention discloses a three-dimensional model system of a 220 KVGL314 sulphur hexafluoride circuit breaker, and relates to the technical field of three-dimensional simulation of the sulphur hexafluoride circuit breaker. The three-dimensional model system is assembled by utilizing modeling software, taking a part grade as a unit and adding geometric constraint according to the assembly relation of equipment to finally generate a three-dimensional virtual model of the 220 KVGL314 sulphur hexafluoride circuit breaker; after the three-dimensional virtual model is built, the three-dimensional virtual model is guided into a simulation platform; the simulation platform comprises a model engine, a data engine, a sound engine, a script engine and a logic engine; the model engine guides a model built in the modeling software; then mathematical logic relation and a geometric constraint condition are added to the model by using the logic engine; interactive animation production is carried on a transformer model according to standard transformer disassembly and assembly steps and overhaul process; and a programmer can add sounds and demonstration animations to a simulation system by using the sound engine and the script engine. The three-dimensional model system disclosed by the invention greatly enhances the teaching quality and reduces the loss of practical equipment.

The embodiment of the invention discloses a method for manufacturing black silicon materials. The method comprises the following steps that silicon substrate materials are prepared; the silicon substrate materials are illuminated by laser pulses in mixed atmosphere of nitrogen and sulfur hexafluoride; a passivation layer is deposited on the surface of the silicon substrate materials subjected to the laser pulse illumination; the silicon substrate materials subjected to the passivation layer deposition is subjected to high-temperature annealing treatment. According to the method provided by the embodiment of the invention, during the black silicon material manufacturing, the laser pulse is used for illumination in the mixed atmosphere of the nitrogen and the sulfur hexafluoride, then, the black silicon materials are formed through processes such as surface passivation layer deposition, the formed black silicon materials realize the absorption higher than 93 percent in the whole wave band being 350nm to 2500nm, in addition, the absorption rate after the high-temperature annealing treatment only generates a little vertical deflection, and the high absorption rate in the whole wave band is still maintained.

The invention relates to equipment for recycling and purifying sulfur hexafluoride gas by virtue of a liftable rectifying tower. The equipment comprises a raw material gas inlet joint, a filtering-absorbing device, a compressor, a refrigerating unit, a first rectifying tower, a second rectifying tower, a hydraulic jacking device, a first tail gas processor, a second tail gas processor and a supercharger. The invention further discloses a method for recycling and purifying sulfur hexafluoride gas by virtue of the liftable rectifying tower. According to the equipment and the method, an SF6 wastegas purification and regeneration technique meet the fresh gas standard GB / T12022-2014 Sulphur Hexafluoride for Industrial Use, the development of SF6 waste gas regeneration technique equipment is promoted, the problems in the regeneration and repeated use of SF6 waste gas are solved, the utilization rate of SF6 gas is increased, the emission of SF6 gas is reduced, the development of green poweris promoted, and the equipment and the method have great economic and social benefits.

The invention belongs to the technical field of sulfur hexafluoride production, and particularly relates to a rectification device for electronic-grade sulfur hexafluoride and a control method thereof. The rectification device comprises a rectification mechanism and a separation mechanism, wherein the rectification mechanism comprises a first-stage rectification tower, a second-stage rectification tower and a third-stage rectification tower; the first-stage rectification tower, the second-stage rectification tower and the third-stage rectification tower are cylindrical cavity type rectification towers; the middle part of the first-stage rectification tower is fixedly connected with a feeding pipe; and the feeding pipe is externally connected with a molding press and a precooler. According to the device, a separation wheel and an evaporation cavity are arranged, the separation wheel is driven to rotate through impact of fed materials, then a fluid is divided by an evaporation cavity, a small part of liquid integrally separated from sulfur hexafluoride liquid is rapidly evaporated under continuous heat conduction effect, and due to the fact that the content of the liquid in the evaporation cavity is small, temperature change is obvious, and pure sulfur hexafluoride liquid is effectively separated by utilizing different boiling points of the liquid.

The invention discloses a combined sulfur hexafluoride inflatablering net cabinet. The combined sulfur hexafluoride inflatablering net cabinet comprises a bottom plate and an inflatable ring net cabinet body, wherein the inflatable ring net cabinet body is located at the top of the bottom plate; moving assemblies are fixedly connected to the periphery of the bottom of the bottom plate; each moving assembly comprises supporting blocks located on the periphery of the bottom of the bottom plate; threaded holes are formed in the periphery of the top of the bottom plate; and rotating bolts are in threaded connection with the inner surfaces of the threaded holes. According to the invention, rotating grooves are formed in the supporting blocks to be matched with rolling wheels and sliding plates on connecting rods, and through holes in mounting blocks and the rotating bolts are utilized, so the mounting blocks can drive the connecting rods in the sliding plates to move upwards or downwards, and whether the rolling wheels make contact with the ground or not can be determined; and through the above structure, movement is convenient, the structure is simple, and a fault rate is effectively reduced.

The invention provides an interrupter assembly and a porcelain knob-type sulphur hexafluoride circuit breaker. The interrupter assembly comprises more than two interrupter monomers; each interrupter monomer comprises a moving support arranged at the head end and a static support arranged at the tail end; a moving contact is assembled in a guiding and sliding mode on the moving support; the static support is fixedly provided with a static contact coaxially opposite to the moving contact; the interrupter monomers are in end-to-end serial connection on the same axis; the moving contact of one interrupter monomer of each adjacent two interrupter monomers is in transmission connection with an insulated connection piece in transmission connection with the moving contact of the other interrupter monomer; and the static support at the tail end of the former interrupter monomer of each adjacent two interrupter monomers is in conductive connection with the moving support of the other interrupter monomer connected onto the tail end of the interrupter monomer. Synchronous opening and closing can be carried out when the interrupter assembly is used, and the voltage grade borne by the interrupter of the circuit breaker can be greatly improved.

The invention discloses a high-pressure type accelerator which comprises an accelerator body. An air inlet and an air outlet are formed in the two sides of the lower end of the accelerator body. Insulating gas which is sulfur hexafluoride is filled in the interior of the accelerator body. The high-pressure type accelerator solves the problem that in the prior art, the accelerator fails to obtain higher energy due to the fact that the insulating gas in the accelerator is not good in the insulating property. Due to the fact that the sulfur hexafluoride is filled in the accelerator, the good electronegativity of the sulfur hexafluoride is utilized to have the functions of absorbing electron energy and causing electron attachment to extinguish electrons, the accelerator is enabled to have higher insulating capability and excellent arc extinguishing performance, the whole performance of the accelerator is improved, the accelerator is enabled to be capable of obtaining the higher energy, and therefore a design objective is achieved, the cost is low, and the sulfur hexafluoride can be reused.

The invention relates to a 10kV sulfur hexafluoride gas pressure relief ring main unit, and belongs to the technical field of power distribution equipment. Comprising a cabinet body and a U-shaped cover, a cabinet door is arranged on the cabinet body, pressure relief openings are formed in the two sides of the cabinet body respectively, pressure relief windows are fixedly installed outside the pressure relief openings, the U-shaped cover is arranged outside the cabinet body and fixedly connected with the cabinet body, a through hole is formed in the top of the U-shaped cover, a second pressure relief assembly is arranged above the through hole, and the second pressure relief assembly is fixedly connected with the cabinet body. The second pressure relief assembly comprises a mounting frame and a top cover, square air outlets are formed in the periphery of the mounting frame, the bottom end of the mounting frame is fixedly connected with the U-shaped cover, side cover plates are arranged on the outer sides of the square air outlets, the top ends of the side cover plates are rotationally connected with the mounting frame, and the top cover is connected to the top ends of the mounting frame and the side cover plates in a sleeving mode. A reset assembly used for resetting the top cover is further arranged in the mounting frame. The ring main unit solves the problems of poor safety during pressure relief and the like of the ring main unit in the prior art.

A mass spectrometer is disclosed comprising a sampling cone and a cone-gas cone wherein, in use, sulphur hexa fluoride (‘SF6’) is supplied as a cone gas to the annulus between the cone-gas cone and the sampling cone in order to improve the transmission of high molecular mass ions passing through the sampling cone into and through subsequent stages of the mass spectrometer.

A method for manufacturing a mold according to the first aspect of the present invention includes the steps of: placing a base material of semiconductor or metal that reacts with sulfur hexafluoride in a reactive ion etching apparatus; supplying a mixed gas of sulfur hexafluoride and oxygen thereto; making the base material undergo a plasma dry-etching process such that oxides are scattered on a surface of the base material, etching advances on the surface of the base material while the oxides function as etching masks, and thereby a fine surface roughness is formed on the surface of the base material; and irradiating the fine surface roughness with an ion beam such that shapes of protrusions of the fine surface roughness can be adjusted.

The invention discloses a field overhaul method for an SF6 switch used for electric power, and solves field overhaul problems for sulphur hexafluoride switch equipment. The field overhaul method finishes the field overhaul through the steps of testing and inspecting; recovering and treating an SF6 gas; dismounting a connecting pipe line for a body and a mechanism; dismounting the switch body, elements and devices in the mechanism; performing an arc extinguishing chamber disintegrating overhaul on the body phase by phase in a dustless purified field overhaul workshop and an equipment field overhaul workshop; overhauling an operational mechanism; testing mechanical characteristic, insulation and pressure resistance; recovering the field, installing and testing after the overhaul; protecting a connecting wire; and performing a transmission experiment, thereby finishing the field overhaul. The field overhaul method solves the problems such as long outage time, high transport risk and high cost which are caused by overhauling the sulphur hexafluoride switch in a manufacture factory.

The invention provides a sulfur hexafluoride adsorbent recovery treatment system based on ultrasonic cavitation effect, and the sulfur hexafluoride adsorbent recovery treatment system comprises a reaction box and a feeding unit. The reaction box comprises a reaction chamber I and a reaction chamber II positioned directly below the reaction chamber I. A partition plate I for isolating the reactionchamber I and the reaction chamber II is arranged between the reaction chamber I and the reaction chamber II. The feeding unit is communicated with the reaction chamber I and is used for feeding a sulfur hexafluoride adsorbent to be cleaned into the reaction chamber I. A liquid inlet is arranged at the upper part of the side wall of the reaction chamber I. The reaction chamber I is also provided with a closable opening for taking out the cleaned sulfur hexafluoride adsorbent. According to the invention, the sulfur hexafluoride adsorbent is efficiently cleaned by utilizing the ultrasonic cavitation effect, and a cleaned waste liquid is subjected to harmless treatment by utilizing the ultrasonic cavitation effect, so that a discharged waste liquid completely meets the discharge standard, andthe sulfur hexafluoride adsorbent is automatically cleaned. The cleaning efficiency is high, the energy consumption is low, the cost is low, and the environment is protected.

A silicon workpiece 5 is machined by a laser 2 with a laser beam 4 with a wavelength of less than 0.55 microns by providing a halogen environment for the silicon workpiece to form an active assist gas for laser machining. The laser beam is focussed onto the silicon workpiece at a power density above an ablation threshold of silicon so that the assist gas reacts with the silicon workpiece at or near a focus of the laser beam such that laser machining speed is increased and strength of the machined workpiece is increased due to an improvement in machining quality. The invention has particular application in the dicing of a silicon wafer in the presence of sulphur hexafluoride (SF6), resulting in increased strength of resultant dies.

The invention relates to the technical field of steel cylinder storage, and discloses a sulfur hexafluoride storage steel cylinder storage system. The system comprises a carrying device used for transporting steel cylinders to a weighing platform, and the carrying device comprises a box body for inserting the steel cylinders, a trolley which is supported below the box body and is used for bearing the box body, and a clamping mechanism which is arranged at a box opening of the box body and is used for fixing the steel cylinders. The clamping mechanism comprises two top covers and an overturning assembly, and the two top covers are oppositely arranged on the two sides of the box body in parallel. The overturning assembly is used for overturning the two top covers, so that the two top covers can be perpendicular to the side walls of the box body. Semicircular clamping grooves are formed in cover bodies of the two top covers. Before warehousing, the trolleyis inserted into the box body at the top of the trolley of the carrying device and is matched with the clamping mechanism at the box opening to further fix the steel cylinders, so that the steel cylinders are prevented from rolling or toppling over in the transportation process, the steel cylinders are prevented from being damaged, the warehousing safety is guaranteed, and the subsequent steel cylinder warehousing process is prevented from being influenced.