51results about How to "Avoid fire hazards" patented technology

The invention discloses a digital printing braided fabric making method and braided fabrics made from the method, which comprises the working procedures of the preparation of a medicament, coating and drying and is characterized in that an adhesive used in the preparation of the medicament is any one of acryl, polyurethane and ethylene-vinyl acetate and a solvent is water. The solvent, which is water, with a weight percentage of 20 percent to 40 percent is added into the adhesive with a weight percentage of 60 percent to 70 percent and silicon dioxide or titanium dioxide with a weight percentage of 3 percent to 7 percent and mixed to form an intermediate medicament. And then the intermediate medicament with a weight percentage of 40 percent to 70 percent and polyvinyl alcohol with a weight percentage of 30 percent to 60 percent are mixed and evenly stirred to form a final medicament. A functional medicament which does not influence the printing function is coated on the rear view of the braided fabric so that a sewing splitting phenomena of the braided fabric does not appears even the braided fabric is cut by a common blade. Furthermore, the hardness and the durability of the braided fabrics are obviously improved.

The invention discloses a novel fiber reinforced composite heat insulation plate and a preparing method of the novel fiber reinforced composite heat insulation plate, wherein the novel fiber reinforced composite heat insulation plate comprises a decoration surface layer, a bottom layer and a heat insulation core layer; the heat insulation core layer is clamped between the decoration surface layer and the bottom layer; the decoration surface layer and the bottom layer are made of polymer modified mortar; the heat insulation core layer is manufactured by injecting inorganic foaming materials into three-dimensional fiber fabrics; the decoration surface layer is connected with the upper part of the heat insulation core layer; and the bottom layer is connected with the lower part of the heat insulation core layer. The composite heat insulation plate has the advantages that the heat isolation and heat preservation effects are good; the weight is light; the intensity is high; and the durability is high. The composite heat insulation plate can be used as a heat insulation roof plate or a heat insulation external wall plate and the like for a mainstream building.

The invention relates to a preparation method of a high-quality prebaked anode for a 500KA electrolytic cell. The method comprises the following steps of: (1) storing petroleum coke at different storage locations according to different producing areas; (2) crushing the petroleum coke blocks having the granularity greater than 200mm with a sledge hammer, sieving the petroleum coke blocks with the granularity less than 200mm, delivering the petroleum coke with the granularity less than 70mm into a petroleum coke conveyer belt, recrushing the petroleum coke with the granularity greater than 70mm so as to deliver the petroleum coke with the granularity less than 70mm into the petroleum coke conveyer belt; (3) feeding different petroleum cokes into a specified blending cabin, wherein the petroleum coke of one producing area is placed in each of the four blending cabins, and a belt weigher is arranged at the bottom of each blending cabin; (4) preparing calcined coke; (5) preparing rough coke, middle coke, fine coke and powdery coke; (6) preparing boiler-out thickeners; (7) preparing cooled thickeners; (8) preparing green bodies; (9) feeding the green bodies into a stacking storeroom for stacking; and (10) roasting the green bodies to obtain a prebaked anode. By using the preparation method, the electrolysis preparation requirement can be met, and safe and sable operation of the electrolytic cell is ensured.

The invention relates to a liquefied petroleum gas or gasoline desulphurization microwave reaction kettle, and belongs to the technical field of application of microwave in desulphurization. The reaction kettle structurally comprises a microwave source (1), a microwave coupler (2), a tuner (4), a transition waveguide (6), a ventilated security isolator (7), an isolation window (8) and a reaction cavity (9) according to a microwave conduction order; the reaction cavity (9) is provided with a cylindrical container with a feeding opening and a discharge hole on the lateral surfaces close to two ends respectively, the cylindrical end close to the feeding opening is closed, and the cylindrical end close to the discharge hole is hermetically connected with the ventilated security isolator (7) through the isolation window (8) and a sealing ring (3); and the ventilated security isolator (7) is a section of circular waveguide, and the lateral surface of the ventilated security isolator (7) is provided with a ventilation hole. The reaction kettle has good desulphurization effect on combustible liquid, and can avoid fire accidents caused by micro-leakage of combustible gas.

The invention relates to the technical field of electronic cooling devices, in particular relates to a heat sink for an LED (light-emitting diode) lamp holder. The heat sink for the LED lamp holder is characterized by comprising a metal heat dissipation base plate, the other side of the base plate is a heat dissipation surface, the heat dissipation surface is provided with a graphite heat dissipation fin, when an LED lamp is arranged on the heat sink, heat produced by a chip is conducted onto the metal base plate, the metal base plate rapidly conducts the heat to the graphite heat dissipation fin, the heat conducted to the fin can be lost in a convection current manner and a radiation manner as graphite has good thermal radiation effect, and the heat produced by a chip of an LED circuit board can be effectively conducted away even in poor airflow or airtight environment, and a phenomenon that the LED lamp is invalid owning to overheating can be avoided, thus the service life of the LED lamp is prolonged; and hidden troubles, such as a fire, caused by overheating can be avoided.

The invention discloses a control system capable of preventing dry burning of cookware and an installation method thereof and relates to the field of use safety of gas stoves or other fuel stoves. The control system comprises a cooker, a power wireless transmitting module, a power wireless receiving module located on the cooker, a temperature measuring module, a temperature data encoding wireless transmitting module, a temperature data decoding wireless receiving module and a cooker control module. The power wireless receiving module is electrically connected with the temperature measuring module and the temperature data encoding wireless transmitting module. The temperature measuring module and the temperature data encoding wireless transmitting module are powered through the power wireless transmitting module and the power wireless receiving module. The temperature data decoding wireless receiving module is electrically connected with the cooker control module. According to the technical scheme, the problem that the system fails due to the fact that the cooker is cleaned is solved, the temperature inside the bottom of the cooker can be directly and accurately measured, the accuracy for judging whether the cooker is subjected to dry burning or not is improved, and the phenomenon of outbreak of a fire caused by dry burning of the cooker is avoided, so that the system is safer and more reliable.

The invention discloses a multifunctional mainframe box comprising a mainframe box body. The multifunctional mainframe box is characterized in that a mosquito-repellent component is arranged on the mainframe box body and comprises a mosquito-repellent device and a control panel for controlling the mosquito-repellent device, the control panel is electrically connected with the mosquito-repellent device, and the mosquito-repellent device comprises a holding groove and an isolating device positioned above the holding groove. The multifunctional mainframe box has the advantages that electric heating mosquito-repellent incense plates are heated by heat generated by a mainframe during working, so that mosquito-repellent effect is achieved, and energy is saved while environmental protection is achieved; and when a computer does not work, the mosquito-repellent device stops working, and accordingly hidden dangers such as fire disasters caused by the fact that an electric heating mosquito-repellent incense device is forgotten to be turned off are avoided.

The invention discloses a logistic rest station system based on wireless electric energy transmission and an operation method thereof. The logistic rest station system comprises electric logistic robots for achieving automatic transmission of expresses at a logistic rest station, a wireless charging platform for achieving conversion from alternating current to continuously and wirelessly charged electric energy and transmitting the electric energy to the electric logistic robot, a coordinated guiding system for achieving control to the wireless charging process and management guidance to reststation equipment. The electric logistic robots are managed in a centralized way, the management efficiency of the logistic system is greatly improved, a built logistic rest station is provided with awireless charging platform, the fire-fighting hidden dangers of electric sparks and the like brought by transitional charging modes such as wired charging are avoided, the charging process is visualized, and the inside of the rest station is designed simple and reliable. The logistic rest station system utilizes a guide sign, achieves unmanned navigation and transportation in the station, saves manpower and material resources, achieve high automation of the logistic rest station and provides a new thinking direction for logistic system construction.

The invention provides an electronic firework spraying control device and an electronic firework spraying system. The electronic firework spraying control device comprises a first liquid storage tank,a supercharging mechanism, a first spraying mechanism, a starting mechanism and a first light emitting mechanism, wherein the top of the first liquid storage tank is provided with a first opening; the supercharging mechanism is used for inflating air into the first liquid storage tank; the first spraying mechanism comprises a first spray pipe and a first spray head cover; the first spray pipe andthe first spray head cover form a first spraying path; the starting mechanism comprises a start motor and a first one-way valve arranged on the first spraying path; the start motor is used for turning on the first one-way valve to allow liquid in the first liquid storage tank to be sprayed out through the first spraying path; the first light emitting mechanism comprises an LED lamp. The LED lampis driven to emit light to illuminate the liquid in the first spraying path to guide light. The electronic firework spraying control device and the electronic firework spraying system can achieve thesafe and fireless liquid firework spraying effect by spraying the safe and harmless liquid. Hidden danger such as a fire caused by open fire of existing fireworks can be avoided. Moreover, potential safety hazards such as explosion generated during transport can also be avoided.

The invention discloses a multifunctional desk lamp, comprising a lamp tube, a lamp shield, a base and a bracket, wherein the middle part of the upper side of the lamp shield is provided with a rectangular groove; the bottom part of the groove is close to the lamp tube; four sides of the groove are provided with heat insulation material; the upper side of the groove is also provided with a scald-proof net shield; the groove is made of metal material including good heat conduction performance; the lamp tube is an energy saving lamp or a filament lamp; and the scald-proof net shield is movably fixed on one side of the groove through a hinge. According to the invention, an electric-warming mosquito incense plate is heated by dint of heat quantity generated in the working time of the lamp tube so as to achieve the effect of repelling against mosquito; simultaneously, when the desk lamp is not worked, an electric-warming mosquito incense groove is also stopped; therefore, the multifunctional desk lamp avoids hidden danger such as fire disaster caused by forgetting to close an electric-warning mosquito killer.

The invention discloses a double coil current sensor comprising a casing, a first coil, a second coil and a measuring wire, wherein the first coil and the second coil share the same size and are symmetrically arranged in the casing, the measuring wire is arranged on the horizontal center line of the first coil and the second coil, the positive end of the first coil is connected to the positive endof the output, the positive end of the second coil is connected to the negative end of the output, the negative ends of the first coil and the second coil are connected with each other and further connected to a ground end, the inner wall of the casing is fixedly connected with a cooling mechanism comprising a first rod, and compression springs are sleeved on the surfaces of the first rod near both ends. The double coil current sensor provided by the invention solves the problem of a safety hazard to use due to unexpected situations such as the temperature of the inner wall of the sensor is also disturbed to change due to the change of the ambient temperature during the actual use, especially in the high-temperature use environment, the aging speed of the device is accelerated, and the fire is prone to occur.

The invention relates to the technical field of oil fume treatment, in particular to an automatically controlled intelligent internet-of-things oil fume purification monitoring device comprising a distribution box, an intelligent power source, an oil fume purifier, a fan and a sensor. Three-phase power is connected to the distribution box externally; the distribution box is connected to the inputterminal of the intelligent power source through a wire; the output terminal of the intelligent power source is connected with a power terminal of the oil fume purifier by a wire; the distribution boxis also connected to a power terminal of the fan through a wire; and the sensor is installed at an air outlet of the fan. The sensor is connected with a data collection terminal of the intelligent power source through a data line. The oil fume degree is obtained by sensing the current value in the oil fume purifier; and thus the user and the functional department are informed of warning information of cleaning the oil fume purifier. The false reporting is prevented. Only the power line connected to the power controller originally needs to be connected to the intelligent purified electrostaticpower supply. The automatically controlled intelligent internet-of-things oil fume purification monitoring device is simple and is used conveniently; and the cost is saved.

The invention discloses a decoration plate for interior and exterior walls. The decoration plate comprises a foundation plate layer, wherein the foundation plate layer is a plate made by taking magnesium oxide and magnesium chloride as main raw materials; and at least one surface of the foundation plate layer is compounded with a metal plate layer. In the invention, the metal material layer is utilized to form a high-intensity fire-retardant isolation strip to be served as a barrier of fire retardance and partition, and the combustion performance reaches a level GB8624-2006A1, so the decoration plate is a novel environment-friendly and energy-saving decoration plate for the interior and exterior walls, and can be directly used for fire-retardant thermal insulation decoration for the interior and exterior walls of a building. Moreover, the decoration plate is safe, reliable, simple in bonding structure, high in wall body thermal insulation decoration effect, low in heat conduction coefficient and high in weather resistance, has a high flame retardant function and excellent shock resistance, does not have condensation points, and can be used for comprehensively protecting the structure of a building main body and prolonging the service life of the building.

The invention discloses an over-temperature detection system of a belt conveyor roller and a control method of the over-temperature detection system, relating to the technical field of conveying machine measurement and control. According to the over-temperature detection system of the belt conveyor roller, fire is prevented by detecting the temperature of a roller bearing and executing a protection instruction. The over-temperature detection system comprises a roller group, an over-temperature detection unit and an industrial personal computer; the roller group comprises a plurality of rollers and a bracket; the over-temperature detection unit is in communication with the industrial personal computer through a CAN bus and comprises an over-temperature switch, a single chip microcomputer and a CAN bus transceiver chip; and the over-temperature switch is pasted to the roller bearing. Deformation is generated through a two-way shape memory alloy spring at a specific temperature and on-off of a circuit is achieved; and the single chip microcomputer and the CAN bus transceiver chip are packaged in a ceramic box and are arranged on the bracket of a support roller. According to the over-temperature detection system, the automatic detection of over-temperature of the belt conveyor roller is achieved, the over-temperature detection system is stable to operate, low in cost and suitable for massive application, and a fire hazard is completely eradicated effectively.

The invention discloses an intelligent fire-fighting system and method based on the Internet of Things technology, and the system comprises a sensing layer, an analysis layer, a transmission layer and an application layer, and the sensing layer, the analysis layer and the application layer are connected through the transmission layer, and achieve the information interaction among the sensing layer, the analysis layer and the application layer so as to obtain the fire-fighting condition in time. The sensing layer comprises a fire-fighting automatic alarm system corresponding to fire-fighting equipment matched with social units and public places, and the fire-fighting automatic alarm system comprises an alarm module and a video monitoring module. According to the invention, through the establishment of the sensing layer, the transmission layer and the application layer, the automatic intelligent monitoring of the fire-fighting system is realized, the fire-fighting event processing efficiency is improved, manpower is saved, and through the establishment of an intelligent inspection system, lower-level security and protection personnel can be conveniently supervised to check fire-fighting equipment in time, and the problem of fire-fighting hidden dangers caused by work slackness of the security and protection personnel is avoided.

The invention discloses a safe and reliable power plug device. The safe and reliable power plug device comprises a plug assembly and a power supply assembly, wherein a plug cavity is formed in one side of the power supply assembly, installation plates are symmetrically and fixedly connected with one side of a top end of an inner wall of the plug cavity, a guide post is connected with a middle partof a bottom end of each installation plate, an excitation coil is wound around the guide post, a limitation block is in threaded connection with a bottom end of the guide post, the guide post penetrates into a movable groove in a middle part of a press block, a driving circuit is embedded into a middle part of a top end of an inner wall of the power supply module, an arc extinguishing chamber isembedded into a middle part of the power supply module, a fireproof cavity is formed in the other side of the interior of the power supply module, a ceramic cushion block is clamped with a middle partof the fireproof cavity, and a plug groove is formed in a middle part of the ceramic cushion block. The safe and reliable power plug device is reasonable in design and is convenient to use; and by reasonably arranging the plug assembly and the power supply assembly, the safety during power utilization can be effectively achieved, parts are reliably connected during plug, and loosing can be prevented.

Provided is a container for packing bulk cargoes for transportation, a transportation state monitoring system and a monitoring method. The container for packing the bulk cargoes for transportation includes a container body and an adjustable stowage inner chamber arranged in the container body, and the adjustable stowage inner chamber is adjustable in volume and used for accommodating and fixing the bulk cargoes. The position information and speed information of the container for packing the bulk cargoes for transportation are collected by a speed measurement manager in real time in the transportation process, the temperature information and humidity information of the container for packing the bulk cargoes for transportation are collected by an in-container state monitoring terminal in real time in the transportation process, by comparing the actual transportation speed with the optimal transportation speed of the container for packing the bulk cargoes for transportation, the transportation speed of the container for packing the bulk cargoes for transportation is adjusted in real time, and when the temperature and humidity of the container for packing the bulk cargoes for transportation exceed the set threshold values, an alarm is given out in time. The state parameters of the container for packing the bulk cargoes for transportation in the transportation process can be monitored quickly and precisely and adjusted and controlled in time, the safety, reliability and economy of the transportation of the container for packing the bulk cargoes for transportation are improved, and losses caused by environmental uncertainty and other factors in the transportation process are avoided.

Relating to the field of environmental protection, the invention discloses a purification and deodorizing device, which includes support legs and a left-right cutthrough rectangular middle box body supported by the support legs; a plurality of treatment layers in spaced arrangement along the longitudinal direction in the middle box body, with the treatment layers extending along the cutthrough direction of the middle box body; rare earth molecular sieve particles loaded in the treatment layers to let to-be-treated air pass; and blind plates disposed between the treatment layers and between the treatment layers and the middle box body. The blind plates include left blind plates disposed on the left of the treatment layers and right blind plates disposed on the right of the treatment layers, and the left blind plates and the right blind plates are in staggered arrangement. With a simple and compact structure, the device provided by the invention can complete absorption and catalytic decomposition of a variety of toxic and harmful gases in one time. Air only needs to pass through one treatment layer, the operation energy consumption is low, and at the same time the device is free of potential safety hazard.

The invention discloses a machine tool oil mist purifier which comprises a front air distribution device, an air inlet, a filtering box, a third filter, a silencer, a box and fixed support legs. An impeller is mounted on the left side of the front air distribution device, a second filter is connected with the inside of a first filter, an air outlet is formed in the left side of the filtering box, a collision filter is mounted in the air outlet and connected between the second filter and the first filter, an air outlet is formed in left side of the box, a rear end cover and a buckle are connected between the third filter and the box, the silencer is connected with the third filter, and the box is connected with the fixed support legs. According to the machine tool oil mist purifier, layer-by-layer secondary filter is achieved, production cost is saved, benefits are expanded, the silencer is arranged, working environments of workers are more comfortable, use ratio of a whole machine is high, and the machine tool oil mist purifier is reasonable and humanized in design and has high recycling benefits.

The invention discloses a data model establishing device and method for fire fighting equipment. The data model establishing device for the fire fighting equipment comprises a collecting module, a control module, a network transmission module, a fire fighting module, an alarm module, and a fire fighting monitoring control system. The collecting module is provided with a plurality of sensors monitoring environment information. The sensors are installed in a building and / or a power distribution cabinet and / or a fire fighting junction box; the control module is provided with a collector, a concentrator and a controller; and the controller is in control connection with an aerosol fire extinguisher, a sprayer and a power circuit breaker which are arranged in the fire fighting module, and the fire fighting monitoring control system is provided with a background server, real-time monitoring software and mobile terminal monitoring software. According to the data model establishing device for the fire fighting equipment, all-around intelligent fire fighting joint control, real-time monitoring, intelligent control and timely alarm of a residential area or an office area are realized, comprehensive monitoring of buildings is realized through coverage of the sensors, electric fire is extinguished at the source through installation of the aerosol fire extinguisher, and personal safety and property safety are protected.

The invention discloses a washing and drying integrated multi-solvent dry cleaning machine, which comprises a bottom plate, an air extraction device and a rolling device. The bottom plate is providedwith a groove, a clean solvent tank and a dirt solvent tank are arranged in the groove, supporting rods are fixed to four corners of the upper end of the bottom plate, and a fixing plate is fixed to upper ends of the four supporting rods jointly. Supporting plates are fixed to two sides of the upper end of the fixing plate, the rolling device is arranged on one of the supporting plates, an outer drum is fixed between the two supporting plates, a mounting rod is fixed to one side of the upper end of the outer drum, a mounting box is fixed to the upper end of the mounting rod, and an air inlet pipe is connected to the other end of the mounting box and connected with the outer drum. The washing and drying integrated multi-solvent dry cleaning machine has advantages that drying of clothes washed by a petroleum dry cleaning machine is realized, safety in use is achieved, external connection of other energy sources except for electricity is avoided, and dangerous situations of petroleum burning caused by overhigh gas temperature in use are avoided.

The invention discloses a cement foamed concrete block and a production method thereof. The cement foamed concrete block comprises the following components in parts by weight: 25-30 parts of cement, 12-6 parts of coal ash, 50-55 parts of river sand, 35-45 parts of slag powder, 35-45 parts of rock flour, 8-4 parts of perlite, 2-3 parts of sodium chloride, 0.5-1 part of sodium thiosulfate, 1.5-2 parts of nekal BX, 1-2 parts of sodium methyl naphthalene sulfonate and formaldehyde condensates and 1-2 parts of concrete reinforcing agent. The production method is used for producing the cement foamed concrete block.

The invention discloses a packaging structure of exposed guide rails of a fireproof roller shutter door. The packaging structure comprises angle steel pieces, fireproof rock wool plates, vertical supporting columns, transverse supporting columns and fireproof rock wool layers. A wing panel on one side of each angle steel piece is used for being fixed to the corresponding guide rail of the shutter door. A wing panel on the other side of each angle steel piece is used for being fixed to a fireproof partition wall through an anchor bolt. One ends of the transverse supporting columns are vertically installed on the vertical supporting columns to form whole racks. The left side and the right side of the guide rails are each provided with one whole rack. The other ends of the transverse supporting columns of the whole supports are vertically installed on the fireproof partition wall so that the vertical supporting columns are vertically arranged and are parallel to the fireproof partition wall. The fireproof rock wool plates are fixed to the vertical supporting columns in a covering mode and flush with the exposed edges of the guide rails. The fireproof rock wool layers are arranged in gaps between the fireproof rock wool plates and the fireproof partition wall. The packaging structure can effectively package the exposed guide rails, has good fireproof sealing performance and has good application prospects.

The invention discloses high-temperature-resistant non-expansion type flameproof and anticorrosive paint and a preparation method thereof. Tetraethyl orthosilicate, hollow glass micro beads, glass scales, a silane coupler, butyl alcohol and an auxiliary are directly added into an agitation kettle, mixed and agitated at a speed of 800-1,000 r / min for 30-45 minutes to obtain the high-temperature-resistant non-expansion type flameproof and anticorrosive paint. The paint has the double functions of fire protection and corrosion prevention, so as to solve the problems of difficulty in fire protection and corrosion prevention of chemical industry enterprises, effectively prevent fire disasters caused by the leakage of high-temperature liquid, and better avoid damage to public property.

The invention relates to the technical field of lithium battery recovery, and discloses a lithium battery recycling and crushing protection device generating a protective gas through the reaction. The device comprises a top cover, a hydrochloric acid storage tank is fixedly connected in the top cover, the outlet end of the hydrochloric acid storage tank is fixedly connected with a connecting pipe, and the bottom of the top cover is fixedly connected with a detection box. The interior of the detection box is fixedly connected with a support frame, and one end of the support frame is fixedly connected with a hydrochloric acid inlet pipe. Diluted hydrochloric acid in the hydrochloric acid storage tank is pumped into a reaction chamber by a suction pump through the connecting pipe and the hydrochloric acid inlet pipe, so that calcium carbonate in the reaction chamber reacts with the diluted hydrochloric acid, a large amount of the carbon dioxide gas and liquid water are generated instantly, the generated liquid water absorbs heat in the box and cools the environment in the box, and meanwhile, the generated carbon dioxide gas is an inert gas. Good flame retardance is achieved, so that the environment in the box is protected by the carbon dioxide gas, and the hazard of fire in the box is effectively avoided.

The invention relates to an intelligent fire-fighting remote monitoring system based on the Internet of Things, and the system comprises a detection device, a data collection module, a data transmission module, a data processing platform, and a data supervision platform. The detection device comprises a fire-fighting equipment module, a fire-fighting water module, an independent smoke and gas sensing module, a fire-fighting power supply module, a fireproof door module, a video monitoring module, an electrical fire module and a fire alarm module, and the output end of the detection device is connected with the input end of the data acquisition module; the output end of the data acquisition module is connected with the input end of the data transmission module, the output end of the data transmission module is connected with the input end of the data processing platform, and the output end of the data processing platform is connected with the input end of the data supervision platform. According to the invention, the blank that nine small places and dangerous chemical production enterprises cannot be effectively monitored is filled.

The invention relates to a method for preventing a slender tubular component from burning in oil quenching of heat treatment. A cover-shaped plug matching with a tube orifice diameter of the slender tubular component is provided. An oil-leaking hole is arranged at the bottom of the plug. Before the component is subjected to the heat treatment, the cover-shaped plug is buckled to one end tube orifice of the component, so that the oil-leaking hole is blocked and then quenching treatment is carried out. With the above method, risks of burning can be effectively prevented; and a quenching effect of the tubular component is guaranteed, so that the component can be fully quenched rapidly.

The invention relates to a device for replacing an interface flange sealing ring of a main transformer with oil. The device comprises a main transformer body, an oil conservator, a vacuumizing three-way valve, a dynamic vacuum system, transformer oil arranged in the main transformer body, a main connecting pipe arranged on the lower portion of the main transformer body and an oil drain valve, wherein the oil conservator is connected to the top of the main transformer body through a communication valve and a gas relay; and the vacuumizing three-way valve is arranged at the top of the main transformer body and is connected with the dynamic vacuum system. The device further comprises an oil level sensor, wherein the oil level sensor comprises an extension rod with electric contacts at two ends, and the electric contacts at the two ends of the extension rod are respectively an initial end electric contact and a tail end electric contact. According to the invention, when a main transformerconnecting pipe and a valve are damaged, leak and need to be treated or a sealing element needs to be replaced, oil flow at an opened pipe orifice or a connector can retract and cannot flow out in a short time, thereby ensuring the work of workers to be smoothly completed, and also being capable of avoiding the risk that external air is sucked into the main transformer due to excessive vacuum pumping.

The invention provides equipment with a heating function and a controlling method thereof, as well as a readable storage medium. The equipment with the heating function comprises a motor and a heatingdevice. The controlling method comprises the steps that the motor and the heating device are controlled to work; and operation parameters of the equipment are acquired and the heating device is controlled to stop based on the operation parameters, wherein the operation parameters of the equipment include remaining operation duration of the motor. According to the technical scheme, on the one hand, tripping of a temperature controller caused by high temperature can be greatly reduced or prevented, so the situation that the equipment cannot heat and dry clothes in a normal mode in subsequent use can be prevented; and on the other hand, hidden dangers of igniting the clothing and causing a fire due to high temperature are avoided.

The invention discloses a double coil current sensor comprising a casing, a first coil, a second coil and a measuring wire, wherein the first coil and the second coil share the same size and are symmetrically arranged in the casing, the measuring wire is arranged on the horizontal center line of the first coil and the second coil, the positive end of the first coil is connected to the positive endof the output, the positive end of the second coil is connected to the negative end of the output, the negative ends of the first coil and the second coil are connected with each other and further connected to a ground end, the inner wall of the casing is fixedly connected with a cooling mechanism comprising a first rod, and compression springs are sleeved on the surfaces of the first rod near both ends. The double coil current sensor provided by the invention solves the problem of a safety hazard to use due to unexpected situations such as the temperature of the inner wall of the sensor is also disturbed to change due to the change of the ambient temperature during the actual use, especially in the high-temperature use environment, the aging speed of the device is accelerated, and the fire is prone to occur.