132results about How to "Does not affect insulation properties" patented technology

The present invention provides a flexible AMOLED display panel in which a hollow structure extending downwardly through at least the interlayered insulation layer is formed, starting from the interlayered insulation layer in a region other than the TFT structure; the hollow structure is filled with a planarization layer. Through the utilization of the organic materials in the planarization layer to replace the inorganic materials of the interlayered insulation layer, the gate electrode insulation layer and the buffering layer, it is possible to improve the stress performance of the flexible AMOLED display panel and prevent the breakage and come-off of a screen when the screen is bended; in addition, since the hollow structure is arranged in a region other than the TFT structure, the insulation effect among the gate electrode, the source electrode and the drain electrode in the TFT structure is not compromised.

The invention relates to a vacuum tube vacuum-degree on-line monitoring device of a high-voltage power distribution device and a method thereof; in the device, a capacity coupler carries out coupling to an alternating-current field signal, a coupling electric field signal is led out to a signal pick-up circuit by a capacitance potentiometer low-voltage arm, after carrying out rectification filtering processing, the pick-up signal is converted into a frequency signal through a voltage-to-frequency conversion circuit, and the frequency signal is transmitted to a microprocessor unit after being coupled and separated. Software processing and analysis are carried out to the acquired signal of the microprocessor, so as to realize the vacuum-degree on-line monitoring function with 10-2 of resolution ratio, an acousto-optic alarming unit realizes vacuum degree degradation pre-alarming function, and the monitoring system and other monitoring systems are synchronized and integrated by a communication unit, so as to be convenient for centralized processing, analysis and sharing of the data. In the device, by monitoring the change of the vacuum tube shielding case alternating-current potentiometer, the change of the vacuum degree is monitored; the structure is simple, the cost is low, the disadvantage that the temperature of a crystal element of a photoelectric probe such as pockels is overcome, the measurement is reliable, the installation is convenient, therefore, the invention is a real-time monitoring device with complete function.

The invention discloses a process method for prolonging the service life of an upper electrode of an etching machine table. The process method comprises the following steps of 1, shielding a sand blasting space around air holes of the upper electrode; then, performing sand blasting roughening treatment; 2, removing shelters and sand material impurities; 3, performing anodization on the upper electrode surface to form an anodization membrane; 4, shielding a spray coating space around the air holes of the upper electrode; then, spraying and coating a ceramic coating; 5, removing shelter impurities; then, performing drying treatment. The service life of the upper electrode can be effectively prolonged; the corrosion resistant performance is excellent.

Provided is a method for measuring the temperature of a high-voltage / extra-high-voltage cable connector by using a fiber. The method is characterized by comprising an external temperature-measuring fiber 1, an internal temperature-measuring fiber 5, a temperature-measuring probe fixing clamp 9, and a temperature demodulator 13. The external temperature-measuring fiber 1 comprises a ST fiber connector 2, an external fiber 3, and an external fiber connector 4 which are successively connected. The internal temperature-measuring fiber 5 comprises an adapter embedded member 6, an internal fiber 7, and a temperature-measuring probe 8 which are successively connected. The temperature-measuring probe fixing clamp 9 fixes the temperature-measuring probe 8 to an end cap embedded member 11 by means of a screw 10. The internal temperature-measuring fiber 5 is connected with the external fiber connector 4 via the adapter embedded member 6. The external temperature-measuring fiber 1 is connected with the fiber interface 14 of the temperature demodulator 13 through the ST fiber connector 2. The method online monitors the operating temperature of a cable connector in real time.

The invention discloses a method for preparing a high-thermal conductivity polyimide / magnesium oxide composite film. The method comprises following steps of (1) dissolving monomer diamine into an organic solvent, stirring to dissolve so as to form a mixed solution; (2) adding monomer dianhydride of the same molar ratio into the solution of step (1), adding a nanometer heat conduction material, mixing uniformly; (3) synthesizing the mixed system of step (2) into nanometer heat conduction material doped polyamide acid resin under conditions that the temperature is 45-55DEG C and reaction time is 7-12 hours; (4) tape casting the polyamide acid resin of step (3) on a stainless steel band, drying to form a cast film, carrying out imidization on the cast film at 350-460DEG C, so as to prepare the polyimide / magnesium oxide composite film. The magnesium oxide inorganic filler is treated on the surface, so as to form effective bonding at the interface, so that thermal contact resistance is reduced, the heat conducting property of the magnesium oxide inorganic filler is improved, and the heat conducting property of the composite material is improved.

An embodiment of the invention provides a high-temperature superconducting cable with a built-in optical fiber. The high-temperature superconducting cable comprises a cryostat, a shielding layer, an outer insulating layer, at least one conductor layer, an inner insulating layer, and a cable framework from outside to inside, wherein liquid nitrogen fills between the cryostat and the shielding layerand fills in the cable framework; each conductor layer is formed by winding a plurality of high-temperature superconducting tape materials spirally; a carbon paper layer is laid between different conductor layers; and a temperature measuring optical fiber is at least laid in a gap between two adjacent high-temperature superconducting tape materials in one conductor layer. The invention further provides a corresponding manufacturing method. By implementing the novel high-temperature superconducting cable and the manufacturing method thereof, the temperature distribution along the cable conductor layers can be directly detected since the temperature measuring optical fiber is in direct contact with the superconducting cable conductor layers; meanwhile, the temperature measuring optical fiber is small in size and installed between the superconducting tape material gap, does not affect the cable body structure, does not affect the cable insulation performance, and is not subject to electromagnetic interference.

The invention pertains to the field of underwater connectors, and specifically discloses a watertight connector applied in underwater operations. The watertight connector is installed on an underwater device. The socket comprises a naval brass housing and a jack which is located in a first rubber vulcanized seal body. One end of the jack is connected with a wire, and the other end of the jack is provided with an independent inner cavity. An annular raised portion is included in the inner cavity. A second rubber vulcanized seal body of the plug is provided with pins. The bottom portion of each pin is provided with an independent rubber insulating rod. One end of each pin is connected with the wire in a cable, and the other end of each pin is inserted into the jack. The rubber insulating rod is inserted into the inner cavity and pressed against the annular raised portion. According to the invention, the socket and the corresponding plug can be inserted and extracted in the wet environment, can be used in shallow sea and deep sea, has the advantage of reliable sealing performance, is suitable for being used in various underwater operation devices, such as ROV, AUV, underwater self-propelled devices, etc., for transferring electrical signals, and can be used to solve the problem that existing underwater connectors cannot be subjected to wet insertion and extraction.

The invention discloses a self-cleaning composite insulator. The insulator comprises an insulating rod, and a metal cap and an umbrella skirt which are arranged on the insulating rod; and the insulator further comprises: a cleaning device arranged above the umbrella skirt, a first driving device connected with the cleaning device and used for driving the cleaning device to move so as to clean thetop end of the umbrella skirt, and a second driving device installed on the metal cap and used for driving the cleaning device to move up and down so as to make contact with or be separated from the top end of the umbrella skirt. In the present invention, the second driving device is arranged on the metal cap; and, during sweeping, the second driving device drives the sweeping device to move downwards to make contact with the top ends of the umbrella skirts. The first driving device drives the sweeping device to rotate to sweep the top end of the umbrella skirt, when the insulator is not swept, the second driving device drives the sweeping device to move upwards to be separated from the top end of the umbrella skirt, the sweeping device is prevented from making contact with the umbrella skirt all the time to influence the insulativity of the insulator, and the insulator has a self-cleaning function and does not influence the insulativity of the insulator.

The invention discloses an automatic detection device for an insulated gas of single-hole sulfur hexafluoride electrical equipment. The automatic detection device comprises a control system, a gas chromatographic analyzer and a gas path system, wherein the gas path system comprises a gas storage tank, a vacuum pump and a compression pump; the gas storage tank, the vacuum pump and the compression pump are sequentially connected with one another by a pipeline along a gas flow direction; a gas inlet end and a gas outlet end of the gas path system are connected with each other through a three-way valve; the three-way valve forms a sample inlet of the gas path system; gas inlet and outlet of the gas chromatographic analyzer respectively pass through the three-way valve and are connected with the pipeline of the gas path system; the gas chromatographic analyzer and the gas path system are connected through reversing of two three-way valves; a gas enters the gas chromatographic analyzer to finish detection; and the control system controls opening and closing of the three-way valves, the vacuum pump and the compression pump. The detection device can achieve automatic sampling detection of the insulated gas of the single-hole SF6 electrical equipment, and can finish automatic recharging of the sampled gas.

The invention provides a high-voltage cable connector with a temperature measurement function. The high-voltage cable connector with a temperature measurement function is composed of a wiring terminal, a terminal sheath, a stress cone and a temperature measuring device. The wiring terminal is clamped in the terminal sheath. A high-voltage cable penetrates through the stress cone in a cable hole of the terminal sheath to be connected with the wiring terminal in a pressed manner. The temperature measuring device comprises a heat conduction ceramic contact, a temperature measuring optical fiber and a photoelectric converter. The heat conduction ceramic contact is bonded to the wiring terminal. One end of the temperature measuring optical fiber is connected with an input end of the photoelectric converter, and the other end penetrates through the stress cone to be opposite to a photosensitive coating on the heat conduction ceramic contact. A signal output end of the photoelectric converter is connected with a data processor through a shielding wire. According to the invention, the working temperature of the wiring terminal is directly collected by the heat conduction ceramic contact and the temperature measuring optical fiber, and the temperature measuring precision is substantially improved; in addition, the temperature measuring optical fiber is arranged along the cable and the stress cone, the insulation performance of the connector is not influenced, and the safe operation of the high-voltage cable connector is ensured.

The invention relates to a metal ageing resisting type enhanced nylon material. The nylon material is prepared from the following raw materials in percentage by weight: 44 to 63% of nylon, 23 to 32% of continuous long glass fibers, 22 to 26% of a complex halogen-free flame retardant, 0.3 to 0.5% of an antioxidant, 0.3 to 0.5% of an anti-copper agent, 4 to 6% of a compatilizer, and 0.1 to 0.6% of a lubricant. The invention further provides a preparation method of the metal ageing resisting type enhanced nylon material. The metal ageing resisting type enhanced nylon material has an advantage that the proper anti-copper agent is adopted, so that the copper damage resisting effect is obvious; the metal ageing resisting type enhanced nylon material further has the advantages of being high in compatibility for nylon, high in dispersing performance, free of migration, free of pollution, resistant to water, high in oil extraction performance, and free of influence on electric insulation performance and other performances of the nylon; meanwhile, a rolling and infiltration mode is adopted in production, so that the retention length of the continuous long glass fibers is more than that of the common method, and thus, the material is very high in strength.

The invention discloses a cabin static contact-free non-SF6 gas insulated isolating switchgear, and belongs to the field of medium-voltage switchgears. For the problems that in the prior art, the non-SF6 gas insulated switchgear is poor in arc extinguishing effect, poor in insulativity and weak in safety, the cabin static contact-free non-SF6 gas insulated isolating switchgear comprises an air chamber, a mechanism chamber, an instrument chamber, a cable chamber, a pressure release chamber and a busbar connector chamber; the air chamber comprises a busbar connector, a circuit breaker, a three-position switch, a busbar, a lead-out bushing and a gas tank which are connected in sequence, the three-position switch, the circuit breaker and the busbar are installed in the closed gas tank, the busbar connector and the lead-out bushing are installed on a gas tank shell, the gas tank is filled with non-SF6 insulating gas, and the circuit breaker is an enclosed type vacuum arc extinguishing circuit breaker. The switchgear is free of maintenance, damage of a severe environment to the insulativity is effectively prevented, and normal and safe operation of the switchgear is guaranteed.

The invention discloses a heat-conduction insulation adhesive for high voltage electrical appliances. The heat-conduction insulation adhesive comprises, by weight, 40 to 50 parts of phenolic resin, 60 to 70 parts of epoxy resin, 10 to 20 parts of silicon dioxide, 35 to 45 parts of mica powder, 15 to 25 parts of butyronitrile latex, 2 to 4 parts of zinc naphthenate, 2 to 4 parts of polyamide resin, 8 to 16 parts of a curing agent, 3 to 5 parts of an accelerator, 9 to 15 parts of a diluent, 4 to 8 parts of a coupling agent and 10 to 20 parts of an insulating heat transfer agent. The heat-conduction insulation adhesive for high voltage electrical appliances has the advantages of good adhesive properties, high thermal conductivity coefficient, corrosion resistance, high temperature resistance, insulating properties and anti-aging performances, and is particularly suitable for bonding between high-voltage electrical devices. The preparation method realizes a lower cost, utilizes easily available raw materials, has simple processes and has a great practical value and good application prospect.

The invention discloses a method and a mould for producing a first outer-packing vacuum arc extinguishing chamber of a phase post of a circuit breaker element. The method comprises a mould closing step, an injection step, a demoulding step and a second outer-packing step, wherein the mould closing step is used for arranging a vacuum arc extinguishing chamber into a mould and closing the mould, theexposed electric conducting part of a contact of the movable end of the vacuum arc extinguishing chamber of the phase post of a circuit breaker element is covered by a first mould head, and the exposed electric conducting part of the contact of the static end of the vacuum arc extinguishing chamber is covered by a second mould head to prevent the electric conducting part from being wrapped by silicon rubber in the injecting process of the next step, and the conductivity of the electric conducting part is guaranteed; and besides, the mould head enables the vacuum arc extinguishing chamber to be positioned in the mould to guarantee the size after the silicon rubber is wrapped; the injection step is used for injecting liquid silicon rubber into the mould so as to be formed by reaction; the demoulding step is used for taking out the first outer-packing vacuum arc extinguishing chamber by demoulding after the silicon rubber is formed by reaction; and the second outer-packing step is used for secondly packing the resin outside the first outer-packing vacuum arc extinguishing chamber to produce the product of the phase post of the breaker element.

The invention provides a voltage-sharing shielding ring hyper-frequency signal lead-out device in a basin-type insulator, which is used for leading out a hyper-frequency signal of a GIS (Gas Insulated Switchgear). The device comprises a conductive lead-out rod arranged inside a bolt mounting hole of the basin-type insulator to be electrically connected with a voltage-sharing shielding ring, insulated fixed sleeves sleeving on the outer side of the conductive lead-out rod to insulate the conductive lead-out rod from an outer casing and insulate the conductive lead-out rod from an outer conductor of a monitoring device, and metal conductive bands arranged on the outer surface of the insulated fixed sleeves and capable of being electrically connected with the outer casing. The invention is used in the fields of partial discharge monitoring and fault diagnosis, avoids the phenomena that the sensitivity of an external sensor of the GIS is poor and an internal sensor of the GIS affects the insulativity, and provides the signal lead-out device; the structures of all the components of the device are simpler, the assembly of the components and the operation of integrally mounting with the GIS are comparatively convenient and fast, and the purpose that the GIS is monitored more precisely, conveniently and quickly can be achieved.

The present invention discloses a direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method. The method comprises the following steps: (1) employing a vacuum pump to extract internal air of a reactor, closing the vacuum pump after vacuum pumping is completed, opening a nitrogen cylinder reducing valve, injecting nitrogen into the reactor and reaching an environment air pressure, and repeatedly performing the process for at least five times; (2) slowing filling fluorine and nitrogen gas mixture with 20% of volume fraction of fluorine into the reactor to allow the air pressure in the reactor to reach up to 300 mbar; (3) going on filling fluorine into the reactor until the air pressure of the reactor reaches up to 500 mbar to allow the fluorine and nitrogen gas mixture to react with silicone rubber samples, keeping the temperature in the reactor at 25 DEG C, replacing C-H bond in the silicone rubber sample surface layer molecule with C-F bond after a certain reaction time, and obtaining the silicone rubber samples with a surface layer molecular structure forming a space charge shielding layer having electronegativity. The direct current cable accessory silicon rubber insulation surface layer molecular structure regulation and control device and method can enhance the charge screening effect of the direct current cable accessory silicon rubber insulation space.

The invention relates to a special material for copper pollution resistant sockets. The material is prepared from the following raw materials in percentage by weight: 45-57% of polypropylene, 20-30% of glass fiber, 20-25% of a compound halogen-free flame retardant, 0.1-0.5% of an anti-copper agent, 2-5% of a compatibilizer, 0.1-0.3% of an antioxidant and 0.1-0.5% of a lubricant. The invention further provides a preparation method of the special material for copper pollution resistant sockets. The special material for copper pollution resistant sockets provided by the invention has the advantages that the proper anti-copper agent is adopted to improve the copper ageing resistance of the special material for sockets, moreover the material has good compatibility with polypropylene, good dispersion, no migration, no pollution, water resistance and good oil extraction, and the electrical insulation property and other properties of the resin are not influenced, the special material for sockets has excellent copper pollution resistance, mechanical properties, fire resistance and processing properties, and can meet the requirements of the European Union RoHS, IEC non-halogen and Reach laws and regulations, thereby having a good application prospect in the field of sockets.

The invention discloses a compound antioxidant for natural ester insulating oil. The compound antioxidant contains glyceride and at least one of the following components: tert-butylhydroquinone, butylated hydroxytoluene and propylgallate, wherein the mass percentage of each component accounting for total mass meets the following relations: the mass percentage of tert-butylhydroquinone is smaller than 10%; the mass percentage of butylated hydroxytoluene is smaller than 3%; the mass percentage of propylgallate is smaller than 3%; and the mass percentage of glyceride is greater than 80%. According to the compound antioxidant for natural ester insulating oil provided by the invention, various antioxidant and synergistic components are matched with one another, so that the antioxidant ability of natural ester insulating oil is improved; and moreover, the compound antioxidant is good in intermiscibility with natural ester insulating oil, and is uniformly dispersed after merging, and the insulating property of natural ester insulating oil is not influenced.

The invention belongs to the technical field of bird repelling of power transmission equipment, and particularly relates to a bird repelling composition applicable to power transmission equipment. The bird repelling composition is prepared from methyl anthranilate, kushenin, szechuan lovage rhizome, rheum officinale, water and auxiliary agents, wherein the auxiliary agents are lauryl sodium sulfate, glycerol and guar gum. The active ingredients are mixed, stirred, heated and dissolved to prepare an oil phase; the water and the auxiliary agents are uniformly mixed and stirred to prepare a water phase; the oil phase is slowly added into the water phase; the mixture is stirred, sheared and emulsified to obtain bird repelling micro-emulsion. When the kushenin, the szechuan lovage rhizome and the rheum officinale are applied to the bird repelling composition, a better flying bird repelling effect can be achieved. Particularly when the bird repelling composition is applied to the power transmission equipment, the transmission equipment can be prevented from being damaged by the bird repelling composition, and the birds can also be effectively prevented from gathering so as to achieve a bird repelling effect. The bird repelling composition has wide adaptation, can be applied to all kinds of power transmission equipment such as high-voltage transmission lines, power transformers and power transmission towers, and has an extremely obvious bird repelling effect.

The invention discloses a self supporting three dimension device and a preparation method thereof. The preparation method of the self supporting three dimension device includes: S1, providing a self supporting insulation dielectric film with a basically flat upper surface; S2, generating a conducting layer and at least one device unit with a preset pattern on the upper surface of the self supporting insulation dielectric film so as to generate a composite layer structure; S3, cutting the composite layer structure so as to obtain at least one suspension portion locally connected with the composite layer structure, wherein each suspension portion is provided with each corresponding device unit; S4, using an ion beam to irradiate the at least one suspension portion so as to deform the conducting layer, and thereby driving each suspension portion to bend around a portion of each suspension portion, connected with the composite layer structure, towards the direction far away from the self supporting insulation dielectric film; S5, removing at least a portion of the conducting layer so as to obtain the self supporting three dimension device. The preparation method of the self supporting three dimension device can prepare a three dimensional structure and micron and nanometer devices which are insulated from one another on the self supporting insulation dielectric film, and has the advantages of being good in controllability, low in cost, and capable of preparing the self supporting three dimension device large in area.

The invention discloses an SAW (Surface Acoustic Wave)-technology-based online monitoring system and an SAW-technology-based online monitoring method for the running temperature of an isolation switch in a GIS (Gas Insulated Switchgear). The system comprises an acquirer and an SAW temperature sensor, wherein the acquirer is arranged on a shell of the GIS; the isolation switch is arranged in the shell of the GIS; the SAW temperature sensor is a passive and wireless temperature sensor, and is arranged at a switch contact of the isolation switch; the acquirer is used for transmitting a radio frequency signal to the SAW temperature sensor as an excitation signal of the SAW temperature sensor; the running temperature of the isolation switch in the GIS is monitored through the acquirer and the SAW temperature sensor. According to the system, the characteristics of an SAW technology are fully utilized, so that the running temperature of the isolation switch in the GIS is monitored on line on the premise of ensuring the inner insulation performance of the GIS. The invention also discloses the monitoring method.

The invention belongs to the technical field of electrical materials, and particularly relates to a preparation method of a medium-high temperature self-repairing insulating material. At present, mostof extrinsic self-repairing systems are double-component microcapsule systems, the systems are complex in structure, it is difficult to ensure that a repairing agent can make contact with a catalystand complete self-repairing before failure when a micro-discharge defect occurs, and common single-component system repairing liquid contains unsaturated double bonds and is prone to failure in advance at the medium-high temperature. The preparation method comprises the steps: firstly, synthesizing an imidazole-added epoxy resin matrix with anion catalytic capability, and introducing microcapsulescoated with stable repair liquid into the matrix to endow the insulating material with the capability of repairing micro-discharge defects. When electric branches caused by micro-discharge defects are developed into microcapsules, the microcapsules can be broken, electric branch channels are filled with the repairing liquid, and then the repairing liquid is cured under the catalysis of oxygen anion groups in the channel walls under the medium-high temperature condition, so that the defects of the electric branches are repaired, and meanwhile, the electrical performance is completely recovered.

The invention provides a capacitor intelligent device and a monitoring method thereof. The device comprises a voltage sensor, a current sensor, a temperature sensor, a multi-channel analog-to-digital (AD) conversion device, a transmission module and a user background analysis and diagnosis system. The monitoring method comprises the following steps of: sampling a voltage signal, a current signal and a temperature signal of a single capacitor by using the voltage sensor, the current sensor and the temperature sensor respectively; transmitting the signals to a multi-channel AD converter; and transmitting the signals to a host computer by using the wired or wireless transmission module. Thus, on-line monitoring of voltage, current, capacitance and temperature of the single capacitor can be realized, namely when a fault takes place in the single capacitor, the voltage and the current at the two ends of the capacitor vary and can be discovered by working personnel in the host computer for early warning.

The invention discloses a GIS internal bus operating temperature online monitoring system and method based on the acoustic surface wave technology. The system comprises a collector and an SAW temperature sensor. The collector is installed on a shell of a gas insulating switch. A bus is arranged in the shell of the gas insulating switch. The SAW temperature sensor is a passive wireless temperature sensor. The SAW temperature sensor is installed at the position of a contact of the bus. The collector is used for transmitting radio frequency signals to the SAW temperature sensor to serve as drive signals of the SAW temperature sensor. By means of the collector and the SAW temperature sensor, the operating temperature of the bus in the gas insulating switch can be monitored. The system fully utilizes the characteristic of the acoustic surface wave technology, and achieves online monitoring of the operating temperature of the insulating switch in a GIS on the premise of ensuring the insulating performance in the GIS. The invention discloses the monitoring method.

The invention discloses a tripping monitoring method for a 10kV circuit breaker. The method specifically includes the following steps that: step 1, a signal acquisition module acquires signals; step 2, a signal conditioning module filters and amplifies the acquired signals in step 1 and transmits the signals to a processor; step 3, the processor judges whether the acquired signals exceed a set threshold value during an acquisition process; step 4, the processor performs wavelet denoising on the acquired signals; step 5, contact linear displacement L is calculated according a circuit breaker spindle angular displacement which has been subjected to wavelet denoising; step 6, the tripping time of the circuit breaker is calculated; and Step 7, the processor uploads the tripping time of the circuit breaker to a circuit breaker status monitoring IDE, so that the health condition of the circuit breaker can be monitored, and the service life of a contact can be predicted. With the tripping monitoring method for the 10kV circuit breaker of the invention adopted, the tripping time of the circuit breaker can be calculated accurately, and therefore, the health condition and mechanical life of the circuit breaker can be judged.

The invention discloses a pot type high voltage combination electric appliance with vacuum arc extinguishing chambers connected in series. The pot type high voltage combination electric appliance with the vacuum arc extinguishing chambers connected in series overcomes the problems that only one vacuum arc extinguishing chamber is installed on a pot type high voltage vacuum circuit breaker, a requirement for a high voltage grade can not be met, ventilation effects among compartments are not good, and safety is low in the prior art. The pot type high voltage combination electric appliance with the vacuum arc extinguishing chambers connected in series is characterized in that 2-5 vacuum arc extinguishing chambers connected in series are installed in a pot body, each vacuum arc extinguishing chamber is provided with an own vacuum arc extinguishing compartment, the 2-5 vacuum arc extinguishing chambers are connected in series so as to form compartments of the vacuum arc extinguishing chambers connected in series, a linear bearing installation through hole and an air hole are simultaneously formed in a connection shield flange in the middle of the compartments of the vacuum arc extinguishing chambers connected in series, a left rapid switch contactor is installed below the left pot body, a right rapid switch contactor is installed below the right pot body, a left rapid earth switch operation mechanism is installed at the lower end of the left pot body, and a right rapid earth switch operation mechanism is installed at the lower end of the right pot body. The pot type high voltage combination electric appliance with the vacuum arc extinguishing chambers connected in series has the advantages of reducing manufacture difficulty of the vacuum arc extinguishing chambers, and guaranteeing that a circuit interrupter is reliably grounded and ventilation effects among the compartments are good.

The embodiment of the invention discloses a refilling type sulfur hexafluoride decomposition product chromatography online detector. The refilling type chromatography detector is used for single-hole sulfur hexafluoride electrical equipment, achieves automatic online detection and analysis of insulating gas of the sulfur hexafluoride electrical equipment in the modes of vacuumizing, sample collection, sample analysis and sample refilling, has multiple detection components and high detection precision and can achieve automatic sampling, detection and refilling of sampling gas of the sulfur hexafluoride electrical equipment, so that harm caused by gas emission to personnel and environment is avoided, the insulativity of the electrical equipment cannot be affected by gas refilling, and the online detection frequency and timeliness of sulfur hexafluoride are greatly improved.

The invention relates to a micro-water content fiber laser detector based on secondary modulation and data stitching technology. The fiber laser detector comprises a one-chip microcomputer, a laser, a first fiber coupler and a probe. A first laser output end of the firs fiber coupler is connected with the probe. A second laser output end of the first fiber coupler is connected with a second fiber coupler, a first laser output end of which is respectively connected with a first photoelectric detector and the one-chip microcomputer. A second laser output end of the second fiber coupler is respectively connected with a reference air chamber, a third photoelectric detector and the one-chip microcomputer. The probe comprises a fiber collimator assembly which is used to couple laser from the inside of fiber to gas and make laser return into fiber. A loop laser signal output end of the first fiber coupler is respectively connected with a second photoelectric detector and the one-chip microcomputer. The one-chip microcomputer is also connected with a temperature and pressure transmitter. The micro-water content fiber laser detector is not easily influenced by infrared radiation such as temperature and the like, is not subject to electromagnetic interference, has better insulating properties and security, and can be used to detect more accurately.

The invention discloses aramid insulation paper and a preparation method thereof. The preparation method comprises the steps: producing an aramid chopped fiber by adopting a low-molecular-weight aramid polymerization liquid, producing an aramid pulp by adopting a high-molecular-weight aramid polymerization liquid, and carrying out dispersion and defibering treatment on the aramid chopped fiber and the aramid pulp respectively by an ultrasonic disperser; mixing the aramid pulp and the aramid chopped fiber which are treated by the ultrasonic disperser, to form a mixed liquid; carrying out wet papermaking treatment on the mixed liquid by a multi-layer inclined wire forming device, and carrying out one-step forming and papermaking to obtain raw paper with 250-800 g / m<2>; under conditions of the temperature of 100 DEG C-180 DEG C and the linear pressure of 230-280 kg / cm, carrying out multichannel press polishing on the raw paper to form the aramid insulation paper. The produced aramid insulation paper cannot generate layering, bubbles and other defects, does not affect the flame-retarding characteristic and high temperature and insulation properties of original aramid insulation paper, and improves the use effect and the service life of the aramid insulation paper.