82 results about "Air insulation" patented technology

The invention relates to the technical field of transformer manufacturing, in particular to an insulation heat dissipation structure of a high-voltage coil and a low-voltage coil and a coil of a dry-type transformer, the insulation heat dissipation structure comprises an insulation main body part, the insulation main body part is provided with a plurality of air channel insulation layers arranged in the radial direction, and each air channel insulation layer comprises an arc-shaped air channel distributed in the circumferential direction; an interval support is arranged between every two adjacent arc-shaped air channels, each interval support is of a thin-wall structure located in the axial plane, and the interval supports of the insulating layers of every two adjacent air channels are arranged in a staggered mode in the circumferential direction; a solid and air insulation fused composite insulation layer is formed between the high-voltage coil and the low-voltage coil, so that the insulation performance is better; and a creepage path is bent for multiple times between the high-voltage coil and the low-voltage coil, so that the creepage distance between the high-voltage coil and the low-voltage coil along the insulating surface is prolonged, the enough creepage distance determines the electrical safety of the transformer under normal work and abnormal voltage, and the operation stability of the transformer is improved.

The invention belongs to the technical field of ring main units, and discloses a ring main unit based on dry air insulation and intelligent monitoring. The ring main unit is provided with a cable chamber working bin, a numerical control monitoring mechanism and a protection mechanism, the numerical control monitoring mechanism is provided with a control chamber and a real-time monitoring assembly, the real-time monitoring assembly comprises a monitoring host and a conduction wire, and the monitoring host is used for monitoring working state parameters of a switch chamber in real time through the conduction wire; the protection mechanism is provided with a mechanism chamber and the switch chamber, and the switch chamber is filled with positive-pressure dry air and is provided with an epoxy resin composite insulator. Based on the above structure, a dual insulation system of dry air insulation and epoxy resin composite insulators is adopted, a basic monitoring architecture capable of sensing the state of a switch room in real time is constructed while environmental protection is realized to replace SF6, and the problems of environmental protection defects and state monitoring deficiency of a traditional gas insulation ring main unit are solved.

The utility model relates to the field of chemical oxygen generation and heat insulation, in particular to an onboard chemical oxygen generator with a heat insulation structure, which comprises a starting mechanism, a starting base detachably connected with the lower end of the starting mechanism, an upper connecting piece, a lower connecting piece and a heat insulation structure, the inner circumferential surface of the top end of the inner tank body is fixed with the outer circumferential surface of the lower end of the upper connecting piece; the upper end of the outer circumferential surface of the lower connecting piece is fixed with the inner circumferential surface of the bottom end of the inner tank body; due to the fact that the outer tank body is adopted and the annular space is formed between the outer tank body and the inner tank body, the problem that the temperature of the outer surface of the inner tank body is too high due to the fact that heat is generated in the inner tank body is effectively solved, and the temperature of the outer tank body meets the standard due to the fact that the static air layer in the annular space between the inner tank body and the outer tank body is low in heat conductivity. Meanwhile, air heat insulation is adopted in the annulus, so that the overall weight is reduced, and the requirement of light-weight products is met.

The utility model belongs to the technical field of blood detection sampling devices, and particularly relates to a blood detection sampling collector which comprises a main body and two first clamping grooves, a first connecting sleeve and a second connecting sleeve are inserted into the two first clamping grooves respectively, first clamping blocks are clamped with the interiors of the first clamping grooves, and second clamping blocks are clamped with the interiors of the second clamping grooves respectively. Limiting sleeves are clamped in the two limiting frames, rectangular grooves are formed in the bottoms of the two limiting frames, compression springs are fixedly connected to the inner tops of the limiting grooves, movable semi-rings are fixedly connected to the bottoms of the compression springs, fixing rings are fixedly connected to the inner side walls of the limiting sleeves, and diaphragms are fixedly connected to the interiors of the fixing rings. By arranging the limiting frame, the compression spring, the movable semi-ring, the limiting sleeve and the diaphragm, air isolation of a needle output hole is achieved, and pollution to blood in the main body caused by long-term exposure of the needle is avoided; and by arranging a first stop block and a second stop block, the two limiting frames can be conveniently limited by the limiting block.

1. The name of the design product: infrared temperature measurement window protection cover. 2. The use of the design product: for installation on the metal shell of air-insulated electrical equipment that cannot be directly opened due to safety production operation requirements, to perform infrared scanning temperature measurement on the internal connection parts. 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 application discloses an air insulation structure verification method and device based on surface flashover voltage calculation, a terminal equipment and a storage medium, and belongs to the technical field of voltage testing. The method comprises the following steps: obtaining an original structure parameter set; establishing a three-dimensional model according to the original structure parameter set; performing steady-state simulation on the three-dimensional model to obtain an initial electric field distribution; correcting the initial electric field distribution according to surface roughness to obtain a first corrected electric field distribution; performing transient simulation on the three-dimensional model to obtain a surface charge density distribution; correcting the first corrected electric field distribution according to the surface charge density distribution to obtain a second corrected electric field distribution; accumulating the volume with a second corrected electric field value not less than a preset gas critical ionization field strength to obtain a critical volume; and calculating the surface flashover voltage based on the critical volume, and verifying the original insulation structure according to the surface flashover voltage. Therefore, by implementing the application, the problem of inaccurate surface flashover voltage calculation in the prior art can be solved.

The utility model discloses a novel motor casing relates to motor technical field, including the mounting hole on the base of casing body and its bottom, and the mounting hole wall is circumferentially provided with one or more outward extending heat conduction groove, and this heat conduction groove penetrates casing body outer surface and is communicated with the inside of mounting hole. The structure constructs the heat dissipation channel that reaches the outside of casing through the mounting hole area, and the heat blocking problem that the small bolt head contact area, air insulation of traditional motor casing causes is solved. When the bolt and the inner wall of mounting hole contact, heat can diffuse to the external environment along the heat conduction groove, and the local temperature rise of base mounting hole area is reduced, and then material thermal aging and bolt pre -tightening force attenuation are avoided.

The utility model discloses a high heat-resistant engine suspension structure, which relates to the technical field of automobile parts and comprises a structure main body, a heat insulation gasket and a heat insulation sleeve, a second mounting bracket is mounted at the top end of the structure main body, and a first mounting bracket is mounted on one side of the structure main body. Heat insulation gaskets are arranged above the second mounting bracket and on one side of the first mounting bracket, insertion holes are formed in the front ends and the rear ends of the heat insulation gaskets, fixing springs are mounted at the front ends and the rear ends of the first mounting bracket and the second mounting bracket, and limiting plates are mounted at one ends of the fixing springs. Through the heat insulation sleeve with the air heat insulation cavity inside, external heat is isolated from the structure body by means of low heat conductivity of air, the heat is further blocked through the heat insulation gasket made of asbestos, glass fiber and other materials, and a heat transfer path is effectively blocked.

The 110kV dry-type transformer comprises three connected single-phase dry-type transformers, and each single-phase dry-type transformer comprises a high-voltage coil, a low-voltage coil and an iron core; the high-voltage coil is sleeved outside the low-voltage coil, and the low-voltage coil is sleeved outside an iron core column of the iron core; according to each single-phase dry-type transformer, one or more insulating partition plates used for reducing the spacing distance of single air insulators are arranged on the wire inlet side of the high-voltage coil, the upper ends and the lower ends of the high-voltage coil and the low-voltage coil and in the air insulators between the upper iron yoke and the lower iron yoke of the iron core respectively. According to the 110kV dry-type transformer provided by the invention, the insulating partition plates are arranged in the air among the wire inlet side, the high-voltage coil, the upper iron yoke and the lower iron yoke, on one hand, the lightning impulse insulation level of the high-voltage coil to the ground can be improved, on the other hand, the height size of the high-capacity dry-type transformer can be reduced, and the height limiting requirement of automobile transportation can be met.

The invention discloses an environment-friendly inflatable cabinet and a use method, and belongs to the technical field of switch equipment. The environment-friendly inflatable cabinet comprises an inflatable part and a non-inflatable part; the inflating part comprises an upper inflating compartment and a lower inflating compartment; a three-station isolating switch is mounted in the upper inflation compartment, a vacuum circuit breaker is mounted in the lower inflation compartment, and the upper inflation compartment is communicated with the lower inflation compartment through an insulator; the three-station isolating switch comprises a switching-on contact, a middle static contact, a moving contact and a grounding contact; the moving contact can be controlled to be in contact with or disconnected from the connection contact by adjusting the left movement of the moving contact, and can be controlled to be in contact with or disconnected from the grounding contact by adjusting the right movement of the moving contact. According to the environment-friendly inflatable cabinet, the problems of uneven electric field distribution and insufficient creepage distance under a low-pressure N2 / dry air insulating medium are solved by optimizing the layout of the inflatable compartments and improving the design of the three-station isolating switch structure and the operating mechanism, and the environment-friendly requirement is met at the same time.

The present application relates to the technical field of cable, especially to a low wind resistance special cable for suspended wind power generation, comprising a carbon fiber reinforced core, a TPV sheath located at the periphery of the carbon fiber reinforced core and a copper conductor located at the outside of the TPV sheath; a TPE insulation layer is sleeved on the outside of the copper conductor according to the length, and a low wind resistance surface pit design is adopted on the outside surface of the TPE insulation layer. The low wind resistance special cable for suspended wind power generation of the present application designs the cable into two parts, the low altitude part below 20 meters, in order to ensure the safety, adopts the structure of conductor + insulation + sheath + carbon fiber reinforced core, the high altitude part above 20 meters, adopts the structure of conductor + sheath + carbon fiber reinforced core, air insulation is adopted between the conductors, the weight of the cable is reduced; two carbon fiber reinforced cores are combined into one and arranged in the middle of the wire core, the tensile force is ensured and the stability of the structure is ensured.

The invention discloses an electric arc simulation method of an HSS under clean air insulation and a related device, and the method comprises the steps: taking clean air as an insulating medium and an arc extinguishing medium, and building a two-dimensional axisymmetric geometric model of a DC high-speed parallel switch arc extinguishing chamber; calculating physical property parameters of the electric arc in the clean air based on the geometric model, wherein the physical property parameters comprise thermodynamic properties and transportation parameters; constructing a magnetohydrodynamic model according to a Navier-Stokes equation and the physical property parameters, wherein the magnetohydrodynamic model comprises a fluid equation and an electromagnetic field equation; based on a preset k-epsilon turbulence model, the magnetohydrodynamic model is solved through Fluent, and arc airflow field parameters are obtained; and performing arc simulation operation according to the arc airflow field parameters to obtain a target clean air arc. The technical problem that existing HSS application is not environment-friendly due to the lack of research on plasma characteristics and arc extinguishing capability of clean air HSS arcs in the prior art can be solved.

This invention discloses an air-insulated ring main unit, comprising a ring main unit body, a fixed plate fixedly connected to the bottom of the ring main unit body, a fixed shaft fixedly connected inside the fixed plate, a roller rotatably connected to the outside of the fixed shaft, a rotating shaft rotatably connected inside the fixed plate and above the fixed shaft, and a locking mechanism provided outside the rotating shaft and on one side of the roller. This belongs to the technical field of ring main units. The air-insulated ring main unit features a first and second support plate that can be flipped and folded, achieving dual functions through state switching to adapt to different operating conditions. When the two sets of support plates are folded together, they can be spliced ​​to form a stable support base. When the support plates are fully unfolded, they cover the vulnerable four corners of the bottom of the ring main unit, forming a wrap-around anti-collision protective structure. This structure can resist impacts from hard objects and lateral scratches during cabinet transfer and handling, preventing deformation of cabinet corners, paint peeling, and cracking, effectively protecting the integrity of the cabinet structure.

The low-impurity introduction material guiding equipment comprises a liquid guiding cavity connected with a vacuum system, an intermediate tank and a target cavity, the target cavity is used for containing a target tank, the intermediate tank is connected with the target tank and a gas source capable of supplying inert gas, and the volume of the intermediate tank is not smaller than that of the target tank; a first connecting pipe and a second connecting pipe are arranged on the liquid guide chamber, the first connecting pipe is provided with a first connecting pipe switch valve, the second connecting pipe is provided with a second connecting pipe switch valve, and a liquid guide mechanism capable of communicating the second connecting pipe and a raw material tank connected with the first connecting pipe is arranged in the liquid guide chamber; a linear driving mechanism of the liquid guide mechanism can drive the liquid guide pipe to reciprocate, so that the second connecting pipe and the raw material tank connected with the first connecting pipe can enter a connected state or a disconnected state. The molten metal can be filled under the condition of air isolation, the purity of metal can be guaranteed to the maximum degree, and meanwhile the risk caused by pouring operation is avoided.

The utility model belongs to the technical field of electrical, and particularly relates to a contact box, a switch equipment bus device and air insulation medium voltage switch equipment, the contact box is used for the switch equipment, the contact box comprises a shell body, one end of the shell body is open, the other end is provided with a fixing plate, and the shell body is of a sleeve type structure; the middle part of the fixing plate is provided with a through hole for a branch copper bar to be inserted into the housing body, and the fixing plate is provided with a positioning hole. The fixing blocks are arranged on the outer sides of the branch copper bars in a sleeving mode, fixing columns corresponding to the positioning holes are arranged on the sides, facing the shell body, of the fixing blocks, and the fixing columns can be inserted into the positioning holes; and the fixing piece is inserted into the fixing column and the positioning hole so as to fix the fixing block on the shell body. According to the scheme, the branch copper bars have good centering degree and do not deflect due to external force, the distance between the branch copper bars between phases is guaranteed, and the problem of voltage withstanding breakdown is avoided.

The invention discloses an online detection method for an open-type air-insulated large-current vacuum circuit breaker. The online detection method comprises the following steps: S1, arranging an angular displacement sensor on a main shaft of the circuit breaker; s2, arranging a pressure sensor on the grounding side of the three-phase insulating pull rod of the circuit breaker; s3, converting the angular displacement signal into a contact displacement curve through a preset six-connecting-rod closed vector analysis algorithm; s4, identifying a just closing point and a just separating point according to the pressure signal; and S5, mapping the rigid closing point and the rigid separating point to the displacement curve, and calculating to obtain mechanical characteristic parameters. The beneficial effects of the invention are that: the angular displacement sensor is provided with the pressure sensors at the grounding sides of the three-phase insulation pull rod of the circuit breaker, directly measures the pressure mutation when the contact is contacted or separated, and converts the main shaft angular displacement into the contact side displacement through a geometrical relationship algorithm of a mechanical transmission structure; and the mechanical characteristic parameters of the circuit breaker are calculated more accurately in combination with the just-on / just-off moments measured by the pressure sensor.

The utility model discloses a deodorization device for sewage treatment tail gas in the technical field of sewage treatment, which is characterized in that a plurality of sewage pools are sequentially connected in series, and a gas collecting cover is arranged at the top of each sewage pool, so that the sewage pools can be capped for protection, personnel can be prevented from falling off, odor can be prevented from drifting away along with wind, and the environmental protection performance can be improved. The sewage treatment device has the advantages that personnel health is protected, the water quality is kept stable, the safety of operators can be improved, waste gas generated in the sewage tank is isolated from air through the gas collecting cover, external air is prevented from reacting with florae of sewage, and a specific environment is formed to perform stable treatment on the sewage; a suction fan is connected to a ventilation pipeline at the top of a gas collection cover, a ventilation pipeline is installed, so that unpleasant gas is sucked, sealed and collected odor is pumped out through the fan, a purification tower is additionally arranged, water is sprayed to the purification tower through a spraying pump for deodorization, and the gas is led to be discharged in a high-environment-friendly mode through an exhaust pipe.

This invention discloses a reaction tube and its detection method. The reaction tube has a first reaction chamber and a second reaction chamber, and includes: a tube body, an air insulation structure, a flow guiding structure, and a sample introduction structure. The reaction tube of this invention achieves heat insulation and full sealing, avoiding the steps of frequently opening the cap to add reagents while preventing contamination, thus improving detection accuracy. The reaction tube of this invention has broad application prospects and will have great application potential in academic research and industrial R&D fields. It can be applied to simple biochemical or chemical reactions, and even to IVD products for rapid pathogen diagnosis based on nucleic acid or protein detection, possessing enormous market value.

The application discloses a kind of upper and lower isolation air insulation switch cabinet, including circuit breaker, upper isolating switch located above circuit breaker, lower isolating switch located below circuit breaker, upper isolating switch includes upper control shaft, fixed contact seat, cam and movable contact, cam is fixedly connected with upper control shaft, cam is used to push movable contact to realize the contact or disconnection between movable contact and fixed contact seat, upper control shaft includes outer cylinder, inner cylinder and inner rod arranged from inside to outside and coaxially arranged, the switch cabinet in the application is used to isolate circuit breaker up and down, realize the effective isolation of circuit breaker, improve the safety performance of electric power;At the same time, isolating switch can isolate all circuit breakers through inner cylinder, and can also isolate and control three circuit breakers respectively through inner rod, can isolate and control circuit breakers respectively according to different working conditions, compact structure, practical function.

The invention relates to the technical field of power distribution network switch cabinets, and particularly discloses a detachable circuit breaker moving end connecting device and an air insulation switch cabinet with the detachable circuit breaker moving end connecting device. The detachable circuit breaker moving end connecting device comprises a conductive clamp which is of a cube structure, and a conical groove is formed in the center of the upper side of the cube structure; a through hole penetrating through the bottom surface of the cube structure is formed in the bottom of the conical groove; the flexible connection comprises four flexible connection seats, and each flexible connection seat is of a long circular frame structure with a notch; and the annular contact seat surrounds the outer sides of the flexible connection seats and is tightly attached to the outer planes of the sides, provided with the notches, of the four flexible connection seats, and the annular contact seat is correspondingly connected with the flexible connection seats through bolts. The high-voltage insulation switch cabinet is simple in structure, safe and reliable, and the problem of high-current heat dissipation of the existing high-voltage insulation switch cabinet is effectively solved from the perspective of structural design. The device is reasonable in structure, reliable in product and small in partial discharge; meanwhile, due to the fact that all structures in the connecting device can be detached and replaced, the production cost is reduced.

The invention discloses an internal circulation magnetic field dry adsorption tower, which comprises: a tower body; a shell steel structure; an air insulation layer; the squirrel-cage tower core structure is arranged on the inner side of the air insulation layer, is arranged in the height direction of the tower body, is divided into four equal parts in the circumferential direction, and comprises an alloy spectrum area and a flue gas channel area; the magnetic alloy steel structure is arranged in the alloy spectral region; the alloy spectrum energy net is of a net structure and is arranged on the magnetic alloy steel structure; the spectrum energy molecular sieve is arranged in the alloy spectrum energy net; the central channel is arranged at the central axis of the tower body and penetrates through the tower body up and down; a storage warehouse; and a flue gas inlet and a flue gas outlet. According to the invention, the heat of the flue gas and the auxiliary heat energy provided by the ion furnace are utilized to realize molecular cracking under a high-temperature condition, the combustion heat release of hydrogen and oxygen in the cracking process can supplement part of energy loss, and the energy utilization efficiency is high. And through an efficient dry adsorption process, no chemical reaction by-product is generated, and no extra energy consumption is generated.

Provided is a storage device capable of inhibiting heat transfer from the surroundings of the storage device into an inner case and capable of allowing a user to easily recognize a situation in which an inner door is not closed. The storage device includes an inner case having an inner opening portion; an inner door that closes the inner opening portion; an outer case having an outer opening portion and in which the inner case is disposed inside, the outer case being configured in such a manner that a space functioning as an air insulation layer is formed between the outer opening portion and the inner opening portion; an outer door that closes the outer opening portion; and a blocking prevention portion that prevents the outer door from being closed in a state in which the inner door is not closed.

The application discloses a switch cabinet layout structure and a switch cabinet, and relates to the technical field of electrical equipment. The switch cabinet layout structure comprises a cabinet body, a circuit breaker chamber and a cable chamber are arranged in the cabinet body, a circuit breaker handcart is arranged in the circuit breaker chamber, the circuit breaker handcart comprises an upper branch contact arm group and a lower branch contact arm group, the cable chamber is provided with a plurality of upper branch contact box groups and a plurality of lower branch contact box groups which are matched with the upper branch contact arm group and the lower branch contact arm group, the upper branch contact box groups and the lower branch contact box groups each comprise a plurality of contact boxes, the plurality of contact boxes have a height difference in the Z-axis direction, so that the plurality of contact boxes are arranged in a staggered mode, and the air insulation distance of the plurality of contact boxes is greater than or equal to a preset safety distance. Without increasing the overall size of the switch cabinet, the cost is greatly reduced, the required safety distance is ensured, and the insulation performance is greatly improved.

The application discloses a quick breaking circuit breaker suitable for dry air insulation, and relates to the technical field of electrical equipment. A circuit breaker switch and a disconnecting switch are sequentially arranged on a switch frame from top to bottom, and the circuit breaker switch and the disconnecting switch are electrically connected; the circuit breaker switch comprises a solid-sealed pole, an insulating pull rod and a permanent magnet operating module, the solid-sealed pole adopts a three-phase integrated solid-sealed pouring design, one end of the insulating pull rod is connected with a transmission shaft of the permanent magnet operating module, and the other end of the insulating pull rod is connected with a moving end of the solid-sealed pole; the disconnecting switch comprises an isolation main shaft, and the isolation main shaft and a transmission crank arm are integrally poured and formed. Through multiple composite insulation means such as an umbrella skirt structure of the three-phase integrated solid-sealed pole, an inter-phase fence and a limiting plate double-layer insulation structure, the relatively insufficient defect of the dry air insulation strength is effectively compensated, and the compact design of the overall structure of the circuit breaker is realized under the premise of guaranteeing the insulation margin.

The invention discloses a large-span metal roof composite waterproof structure, and belongs to the field of building waterproofing, the large-span metal roof composite waterproof structure comprises a supporting layer, an inner waterproof layer, a vapor-proof heat preservation layer and an outer waterproof layer which are sequentially arranged from bottom to top, and a closed air layer is arranged between the inner waterproof layer and the outer waterproof layer; the outer waterproof layer is provided with segmented drainage channels, and a plurality of supports are arranged between the inner waterproof layer and the outer waterproof layer. The waterproof structure has the effect of improving the waterproof capacity of the large-span metal roof.

The utility model discloses an insulation reinforced contact box for 17.5 kV removable metal-enclosed switchgear, which comprises a contact box, a metal plate wall and a busbar, the bottom end of the contact box is provided with a mounting seat, the front part of the contact box is provided with an insulation tongue, and one end of the insulation tongue is provided with an extension tongue; the contact box is connected with the metal plate wall through the mounting seat, the metal plate wall is bent towards the X direction, and the side, provided with the mounting boss, of the mounting seat is in contact with the side, in the bending direction, of the metal plate wall, so that the creepage distance is increased, and the electrical performance is improved; the contact box adopts an unusual board-front installation mode, so that the internal insulation creepage distance is increased, and the internal insulation performance is obviously improved; the arrangement of the extension tongue can shield the grounding installation part of the installation boss part, so that the exposed live-line distance of the installation part can meet the 17.5 kV voltage grade requirement, the design can block high voltage, the air insulation of the high-voltage busbar to the ground is changed into composite insulation, and the reliable electrical performance is ensured.

This invention relates to a composite fireproof protection structure for the surface of wood and bamboo components, comprising a lignified stem pad, U-shaped nails, and an inorganic cementitious material layer. The lignified stem pad is formed by multiple parallel and spaced lignified stems bound together with metal binding wires. The U-shaped nails fix the metal binding wire portion of the lignified stem pad to the surface of the wood component. The inorganic cementitious material layer covers the lignified stem pad. The porous structure of the lignified stems forms an air insulation layer, which can significantly delay the transfer of heat to the interior of the wood and bamboo component under fire conditions. The inorganic cementitious material layer releases water of crystallization to absorb heat and lower the temperature when exposed to fire, while the lignified stems act as a skeletal reinforcement, inhibiting the cracking and peeling of the inorganic cementitious material layer. All materials used are natural and environmentally friendly, and the operation is simple and quick, especially suitable for narrow construction spaces and short construction periods in lane houses.

The application discloses a bus chamber structure and a dry air insulation switch cabinet, which comprises a bus chamber, a main bus, a static contact and an insulator arranged in the bus chamber; dry air is filled in the bus chamber; the main bus comprises a bus pipe and a bus plate arranged in the bus pipe, the bus plate extends along the axial direction of the bus pipe and separates the inner cavity of the bus pipe into a first heat dissipation channel and a second heat dissipation channel; the insulator and the static contact are fixedly connected to the two sides of the bus plate in the thickness direction, and the pipe wall of the bus pipe is provided with a first accommodation opening corresponding to the position of the static contact and a second accommodation opening corresponding to the position of the insulator. The application adopts the dry air insulation and the pipe-plate integrated structure, realizes the SF6-free environmental protection insulation, the uniform electric field distribution and the efficient natural heat dissipation, and is suitable for 40.5kV air insulation switch equipment.

This invention discloses a top-mounted liquid-storage gravity-circulating battery thermal management and fire suppression system and method. The system includes a battery pack housing, a controller, and a radiator. A battery module is housed within the battery pack housing. A liquid storage tank is mounted on the battery module, connected to a vertical flow channel. A main control valve and an emergency release valve are connected in parallel between the liquid storage tank and the vertical flow channel. The vertical flow channel is located within the battery module. A collection tank is located at the lower end of the vertical flow channel. A circulation pump is located between the collection tank and the liquid storage tank. A heating device is installed in the pipeline between the liquid storage tank or the circulation pump and the liquid storage tank. The method includes: a cooling mode utilizing gravity-flowing coolant for heat dissipation; a heating mode preheating the coolant before circulating it for heating; a heat preservation mode closing the valve and utilizing air insulation; and a fire suppression tiered release mode first opening the main control valve for a level one warning release, and then opening the emergency release valve to achieve level two full-volume immersion fire suppression if thermal runaway worsens. This invention achieves a high degree of integration of cooling, heating, heat preservation, tiered fire suppression, and self-inspection.

The embodiment of the invention discloses a portal frame fault category identification method and related equipment, the inclination angle, the bus voltage, the discharge ultraviolet spectrum and the air insulation strength in the embodiment can cover the structure, the electricity and the environment factors of the portal frame, and the limitation of a single information source is avoided. The method comprises the steps of quantifying probability values of state information to different states based on a preset probability function, calculating belief function values and likelihood function values of the different states according to the probability values, and judging the fault type of the portal frame according to the belief function values and the likelihood function values, so that the fault type is judged based on multi-information-source data. And the fault type discrimination precision is improved.