142results about How to "Extended replacement time" patented technology

The invention discloses an organic waste gas adsorption and desorption concentration catalytic combustion equipment system which comprises a dry-type filtering device. The organic waste gas adsorption and desorption concentration catalytic combustion equipment system is characterized in that a catalytic combustion bed is connected to the lower end of the dry-type filtering device, a flame arrester a is connected to the right end of the catalytic combustion bed, a cold air supplement valve is connected to the lower right end of the flame arrester a, and a temperature adjusting valve is further connected to the lower end of the catalytic combustion bed. According to the organic waste gas adsorption and desorption concentration catalytic combustion equipment system, the replacement interval of activated carbon is greatly prolonged, the replacement time of the activated carbon is shortened, the activated carbon can be effectively used for desorption, regeneration and recycling, organic waste gas after desorption is thoroughly decomposed into CO2 and H2O after catalytic combustion is carried out, no secondary pollution exists, a PLC and a human-computer interface are adopted in the system to control an operation system, the operation is easy to achieve, and the possibility of misoperation is reduced.

The invention discloses an insulation monitoring and life prediction method of a cross linked polyethylene cable. One of the leakage current, insulation resistance and dielectric loss angle of the cross linked polyethylene cable serves as detected amount alpha, and the detected amount alpha and the mutation rate beta of the detected amount alpha are computed in real time, so monitoring of a cable insulation degradation process is realized. The daily average, month average and year average of the detected amount alpha and the mutation rate beta of the detected amount alpha are obtained by computation, and the insulation life of the cable is computed according to a formula. The insulation monitoring and life prediction method of the cross linked polyethylene cable has the advantages that monitoring of the cable insulation degradation process can be realized, the service life of cable insulation can be quantitatively predicted, and the utilization rate of the cable is improved.

The invention provides a remote monitoring system and method for fatigue cracks of an orthotropic steel bridge deck slab. The remote monitoring system for the fatigue cracks of the orthotropic steel bridge deck slab comprises an in-situ detection device, a wireless gateway and a remote control device, wherein the in-situ detection device is composed of a fracture line assembly, a path detector and a wireless terminal, the wireless gateway is composed of a Zigbee gateway module and a GPRS gateway module, the remote control device is composed of a remote server and a remote computer, the fracture line assembly is composed of optical fibers or resistance fracture lines which are arranged in a bidirectional and orthorhombic mode, the path detector is connected with the facture line assembly and used for detecting the connection and disconnection of each fracture line in the fracture line assembly according to a command of the wireless terminal, a Zigbee short-distance wireless transmission network is formed between the Zigbee gateway module and the wireless terminal, and the GPRS gateway module is in remote communication with the remote server through an GPRS. By the adoption of the remote monitoring system and method for the fatigue cracks of the orthotropic steel bridge deck slab, long-term remote monitoring of the fatigue cracks of the orthotropic steel bridge deck slab is achieved, and the system and method can be applied to practical engineering.

The invention discloses an air filter, which consists of an air inlet pipe, an air inlet pipe of an engine, a filter element, an upper shell and a lower shell of the air filter. The upper shell and the lower shell of the air filter are abutted to form a shell of the air filter, and the filter element is fixed at the abutted part of the upper shell and the lower shell of the air filter, wherein an open pore of the upper shell of the air filter is communicated with the air inlet pipe of the engine, and an open pore of the lower shell of the air filter is communicated with the air inlet pipe. The air filter is characterized in that the abutted surface of the upper shell and the lower shell of the air filter is an inclined plane, the included angle of the abutted surface and the horizontal plane is alpha, and the side wall of the upper shell of the air filter is vertical to the abutted surface. The air filter has the advantages that the air filter can avoid blockage of a bent upper part on the side wall of a vehicle body, is favorable for assembly and disassembly of the upper shell of the air filter, so as to replace the filter element conveniently; at the same time, the air filter improves filter area of the filter element, reduces air resistance in the air filter, improves air inlet efficiency, prolongs the service life of the filter element, and prolongs the replacement time of the filter element.

The invention relates to an oil filling vehicle, specifically relates to a mobile lubricating oil filling automobile, and aims at solving the problems of potential risk of firing of the currently provided diesel compressor type mobile oil filling automobile, as well as solving the problem that a conveying device is large in size and can convey little oil and the heat preserving performance is poor for the oil products under conveying. The mobile lubricating oil filling device comprises the following seven major parts: an automobile body, a hydraulic oil supply power system, a heating and heat preserving system, an oil supplementing system, an electrical control system, an oil product output device and a grease conveying device. The mobile oil filling automobile is high in automation degree, convenient to operate, safe and reliable.

The invention relates to a gas-solid separation ceramic film and a preparation method thereof, belonging to the technical field of high temperature dedusting. Under extremely severe working conditions like high temperature and high pressure, a ceramic film supporting body and a film suffer from brittle rupture due to poor toughness of materials. According to gas-solid separation ceramic film modification methods in the invention, a small amount of micrometer toughening aids like zirconia powder, alumina silicate fiber and mullite are added into raw materials used for preparation of a ceramic film supporting body and a small amount of nanometer toughening aids like zirconia are added into raw materials used for preparation of a gas-solid separation film, so the toughness of the gas-solid separation silicon carbide ceramic film can be effectively improved; and with the two modification methods, on the premise that each excellent performance of the gas-solid separation ceramic film is not reduced, the toughness of the gas-solid separation ceramic film is improved and does not suffer brittle rupture and the like under severe working conditions.

The invention relates to a medical collagen gel and a preparation method thereof. The gel contains 1-3% by weight of collagen, 2.5-5% by weight of polyvinyl pyrrolidone, 0.5-3% by weight of a water-soluble polymer and 89-96% by weight of sterile water for injection. The medical collagen gel prepared by the method provided by the invention has good curative effects in treatment of female lower genital tract inflammation, cervicitis, cervical erosion, burns, scalds, bedsore infections, other wound infections and the like. In the aspect of treatment of gynecological inflammation, the gel has a good anti-inflammatory effect and moisturizing property and can regulate the pH value in a human body and maintain balance of an internal environment; and in the treatment aspect of repairing wounds, the gel can effectively reduce inflammation, reduce wound secretions, can be closely combined with newborn wounds to naturally form films to temporarily replace skin epidermis, prolongs the replacement time, reduces the suffering of the wounds, promotes the healing of the wounds and reduces scarring.

The invention discloses a new energy powered all-weather air purifying device. The new energy powered all-weather air purifying device comprises a mounting plate, a connecting plate, a shell, an air purification filter screen, a hole hood, an activated carbon filter screen, an HEPA filter screen, screw rods, nuts, round holes, straight slots, first springs, pressing plates, round bars, leaf springs, clamping blocks, a sucking pump, a suction pipe, an exhaust pipe, a cavity, short pipes, a round tube, a second spring, a piston, a piston rod, a protective cover, fixed rods, a solar cell panel, arubber gasket, a wind power generation device, a cylindrical shell, a power generator, a rotary shaft, fan blades, a first connecting pipe, a second connecting pipe, a solenoid valve, an air outlet hose, a spray head, mounting holes, a wind-solar complementary controller, a storage battery and a guide sleeve. The new energy powered all-weather air purifying device drives the piston and the pistonrod through air flow formed by purified air to move the protective cover, so that the solar cell panel can be covered by the protective cover in rainy and strongly windy weather and be exposed in theair in clear weather.

The invention discloses a fresh air machine with a filter screen being convenient to renew. The fresh air machine comprises a shell body, a fan, an unwinding device, a winding device and the filter screen. An air inlet communicating with the outside world and an air outlet communicating with indoor space are formed in the shell body; the fan is arranged in the shell body and used for blowing the air in the outside world into the indoor space; the unwinding device and the winding device both are movably arranged on the shell body; the filter screen is arranged in a tensioning mode, one end of the filter screen is wound on the unwinding device, and the other end, between the unwinding device and the winding device, of the filter screen is connected with the winding device; and a filter part which can shield the air inlet or the air outlet is formed in the position, between the unwinding device and the winding device, of the filter screen. By matched using of the unwinding device and the winding device, the filtering part, used for shielding the air inlet or the air outlet, of the filter screen of the fresh air machine of the structure can be renewed without the need of replacing the whole filter screen, so that the efficiency of renewing the filter part is improved, and the replacing time of the whole filter screen is prolonged.

The invention belongs to the technical field of cable materials, and provides a radiation-proof cable. The radiation-proof cable includes a cable external structure, a cable internal structure, and a filling layer. The arrangement sequence is the inner structure of the cable, the filling layer and the outer structure of the cable. The object of the present invention is to provide a radiation-proof cable, which has the functions of high temperature resistance and radiation protection.

A chopper mechanism for chopping stalk-like plant wherein the chopper mechanism includes a plurality of chopping elements that are removably mounted on the pair of chopper drums via associated holders. The chopping elements are mounted on the chopper drums circumferentially spaced apart and define a predetermined radial angle (α) therebetween. Each of the chopping elements having a pair of substantially parallel cutting edges spaced apart by substantially parallel mounting surfaces. One of the cutting edges is selectively engaged in the chopping while the other cutting edge is enclosed within the holder. The parallel cutting edge of the chopping elements facilitates in reversing each chopping element depending on the degree of abrasion of the cutting edge.

The invention discloses a Teflon coating material and an application thereof. The Teflon coating material comprises a top coat and a primer, wherein the top coat comprises the following components inparts by weigh: 100 parts of polytetrafluoroethylene dispersion solutions, 1-5 parts of mica powder, 15-25 parts of mixed solutions, 0.1-1 part of metal oxide, 5-15 parts of binary thermoplastic copolymer dispersion solutions and 0.5-1 part of a nonionic surfactant; the primer comprises the following components in parts by weigh: 100 parts of polytetrafluoroethylene dispersion solutions, 5-10 parts of mica powder, 1-5 parts of graphite powder, 1-5 parts of metal oxide, 5-10 parts of polyphenylene sulfide, 20-40 parts of polyamic acid salt solutions, 20-40 parts of silica sol and 80-120 parts of deionized water. According to the Teflon coating material prepared by a composition, smooth, corrugated and burr-free extruded pipe products can be ensured, and the time for the coating material tocompletely adhere to the metal surface of an extrusion die is prolonged, and thus the replacement time of the extrusion die is prolonged, and the production efficiency is improved.

The invention discloses a rapier loom edge fabric yarn guide device which comprises a creel platform and a threading plate. The creel platform is horizontally arranged, multiple yarn bars used for inserting cheeses are arranged on the upper end face of the creel platform, the bottom ends of the yarn bars penetrate through the creel platform, hollow yarn guiding channels are formed in the yarn bars, a yarn inlet is formed by each yarn guiding channel at the vertex of the corresponding yarn bar, and a yarn outlet is formed in the portion, on the lower portion of the creel platform, of the bottom end of each yarn bar; tension-regulating devices are arranged on the edges of the lower end face of the creel platform, one side, provided with the tension-regulating devices, of the creel platform extends to form elastic flakes, the number of the tension-regulating devices and the number of the elastic flakes are the same as the number of the yarn bars, and yard guides are arranged at the ends of the elastic flakes; waste selvage yarns penetrate through the hollow yarn guiding channels and then sequentially pass through the tension-regulating devices, the yarn guides and the threading plate, the problems that before the device is used, the waste selvage yarns need to be wound on a waste selvage cylinder in advance, and tension of waste selvage warp becomes small with usage of the waste selvage yarns are solved, and the advantages that the tension of the waste selvage warp is balanced, and the waste selvage warp is not prone to breaking are achieved.

The invention discloses a non-oil-return type fuel oil supply system for an automobile. The system comprises a fuel tank, an oil pipeline, an engine oil rail and fuel spray nozzles. The non-oil-returntype fuel oil supply system also comprises an oil storage barrel, a fuel pump, a fuel strainer connected with the oil pipeline in series, a pressure sensor for detecting fuel pressure in the oil pipeline, and a controller, which is used for receiving fuel pressure information from the pressure sensor and sending a control signal to the fuel pump according to the received pressure information to control power of the fuel pump and to maintain constant fuel pressure in the oil pipeline. According to the non-oil-return type fuel oil supply system for the automobile, the power of the fuel pump canbe effectively reduced, the service life of the fuel pump can be prolonged, the replacement time of a gasoline filter can be extended, the fuel temperature in the fuel tank can be reduced, fuel consumption can be reduced and vehicle dynamic performance can be improved.

The invention discloses an air filtering device capable of facilitating updating of a filtering net. The air filtering device comprises a shell, an unreeling device, a reeling device and the filtering net, wherein a gas inlet and a gas outlet are formed in the shell; the unreeling device and the reeling device are both movably arranged on the shell, are positioned between the gas inlet and the gas outlet, and are positioned on the outer parts of the two opposite side edges of the gas outlet; the filtering net is tensioned and arranged between the unreeling device and the reeling device; one end of the filtering net is reeled on the unreeling device, and the other end of the filtering net is connected with the reeling device; the filtering net between the unreeling device and the reeling device forms a filtering part capable of shielding the gas inlet or the gas outlet. The air filter with the above structure has the advantages that the filtering part, for shielding the gas inlet or the gas outlet, on the filtering net can be updated through cooperative use of the unreeling device and the reeling device, and the filtering part can be updated without changing the whole filtering net, so the filtering part updating efficiency is improved, and the change time of the filtering net is prolonged.

The invention discloses a composite low-aluminum lattice brick. The composite low-aluminum lattice brick comprises a clay brick base body with multiple airflow passages, and inner walls of the airflowpassages are provided with highly-siliceous coating layers by compounding. The brick base body is made by adding a small quantity of plastic clay and a binding agent into main materials including flint clay, siliceous chamotte, pyrophyllite raw materials, molten quartz and siliceous clay raw materials. The highly-siliceous coating layers on the inner walls of the airflow passages are made by adding a small quantity of plastic clay fine powder, a dispersing agent, a binding agent and an anti-settling agent into main materials including siliceous pyrophyllite, silica, molten quartz and silica powder, and raw materials of the highly-siliceous coating layers are prepared into slurry which is then sprayed or injected to surfaces of the airflow passages to form a whole with the base body by firing. By the process, on the one hand, the lattice brick is great in thermal shock resistance, and on the other hand, the lattice brick is excellent in alkali erosion and permeation resistance, and accordingly the service life can be effectively prolonged.

The invention relates to a low-power-consumption intelligent door lock. The low-power-consumption intelligent door lock comprises a door lock control MCU, a capacitance touch keyboard, a fingerprint sensor, a non-contact IC card antenna, a BLE module, a voice playing module, an OLED display screen, a door lock motor driving module, a battery capacity monitoring module and a door handle switch sensor, and further comprises a loudspeaker, a door lock motor and a battery. A low-power-consumption standby method comprises the steps that (1) the door lock is closed; (2) after 5 seconds, the BLE module, the voice playing module, the OLED display screen, the door lock motor driving module and the battery capacity monitoring module are turned off, and the capacitance touch keyboard, the fingerprintsensor and the non-contact IC card antenna are reserved to be turned on; (3) when the door lock control MCU monitors the situation that the door handle switch sensor does not transmit a signal for continuous 48 hours, the capacitance touch keyboard, the fingerprint sensor and the non-contact IC card antenna are turned off; (4) during door opening, the handle switch sensor transmits the signal tothe door lock control MCU, and the capacitance touch keyboard, the fingerprint sensor and the non-contact IC card antenna are turned on; and (5) the door lock is opened.

The invention discloses a rear clean-up scraper for a land leveler. The rear clean-up scraper for the land leveler comprises a mounting seat plate (1) and a four-bar linkage connected with the mounting seat plate (1); the four-bar linkage is driven by an oil cylinder (4) and connected with a gear rack (5); the gear rack (5) is fixed on a gear seat (6), and a clean-up scraper (12) is fixed to the gear seat (6) through a mounting plate; and the four-bar linkage drives the entire clean-up scraper (12) to move up and down under the telescopic action of the oil cylinder (4). According to the rear clean-up scraper for the land leveler, the two-times leveling of the land leveler can be realized through a single trip, the working efficiency is improved, the replacement time of a shovel blade is prolonged and at the same time, larger stones with irregular particle sizes on the surface are cleaned up, the leveling quality is improved, and the scratches on tires of road driving equipment are reduced.

The invention discloses a film for fixing retention needles and retention tubes, which comprises a supporting layer and a fixing film, wherein the supporting layer can be conveniently peeled off; a buffer water-absorption pad is arranged between the supporting layer and the fixing film; and the buffer water-absorption pad is provided with an anti-adhesion film (or special materials are not provided with an anti-adhesion film) and a sight hole are arranged on the buffer water-absorption pad. The buffer water-absorption pad is arranged between the supporting layer and the fixing film to form a sandwich structure, thereby preventing the fixing film with adhesive face from directly contacting the eyelet of the retention needle, and the film has the functions of buffering, water absorption and perspiration absorption, thereby greatly avoiding infections and phlebitis. In addition, after the film is fixed on the skin, since the buffer pad or functional pad is made of soft material, the comfort of the patient can be enhanced, and the film can not easily fall off.

The invention discloses a mobile anti-rust clogging cooling water tank which comprises a tank body; the tank body is provided with a filter tank; the inlet of the filter tank is connected with a cooling water returning port of the tank body; the outlet of the filter tank is connected to a water storage cavity of the tank body; and a vibrator is arranged on the tank wall of the filter tank. A permanent magnet body is arranged in the filter tank. In sum, the mobile anti-rust clogging cooling water tank has the advantages that (1) due to a filter mesh and the permanent magnet body, the filter effect on chips is improved, the burden of the filter mesh is reduced, and the filter mesh cleaning or changing time is prolonged; (2) the vibrator vibrates the metal chips on the filter mesh away from the filter mesh, so that on one hand, the metal chips are not clamped on the filter mesh, accumulated on the filter mesh and do not block the filter mesh, and on the other hand, the permanent magnet body conveniently absorbs the metal chips which are vibrated away from the filter mesh and the filter effect is further improved; and (3) after a universal wheel is arranged on the bottom surface of the tank body, the tank body can move randomly, so that an original water distribution tank of a small processing center is temporarily changed, and the continuous working time of the small processing center is prolonged.

The invention discloses a preparation method of coal-based agglomerated activated carbon having high adsorbability and high bulk specific weight. The preparation method comprises the following steps that non-caking coal and strong caking coal are used as raw materials to perform coal blending, the coal is mixed with asphalt and a strong alkaline compound, and smashing is performed to obtain raw material coal, wherein the raw material coal contains, by total weight, the non-caking coal 80-90%, the strong caking coal 5-15%, the asphalt 3-7% and a strong alkaline compound 0.2-1%; the raw material coal is briquetted, formed and granulated to obtain coal granules; the coal granules are subjected to oxidation treatment, carbonization treatment and activation treatment so as to produce the activated carbon. The preparation method utilizes a certain amount of non-caking coal and strong caking coal for coal blending to prepare the activated carbon, so that the activated carbon products also keep higher adsorbability while having high bulk specific weight, and the problem that the adsorbability and the bulk specific weight of the activated carbon are difficult to consider when the coal-based agglomerated activated carbon is prepared by adopting a traditional method is solved.

The invention relates to an air filtrating device of a plant wall. The air filtrating device is connected with an air distributing hole in the plant wall. The air filtrating device comprises a housing, a filtering layer arranged in the housing, a diversion sleeve connected with the filtering layer, a wind inducing pipe connected with the diversion sleeve and a fan at the tail end of the wind inducing pipe, wherein the filtering layer comprises an activated carbon filter screen plate, an electrostatic adsorption grating plate and a plurality of layers of filtrating cotton plates; a plurality of clamping grooves are formed in the top end of the housing; a clamping plate is arranged in each clamping groove; each clamping plate comprises a baseplate and a square mounting hole formed in the baseplate; a groove is formed in the inner side wall of each hole; the activated carbon filter screen plate, the electrostatic adsorption grating plate and the layers of filtrating cotton plates are respectively embedded in the grooves; sealing cushions adapting to the corresponding clamping grooves are arranged on the inner surface and the outer surface of each baseplate; and the diversion sleeve is a hood body of which the cross-sectional area is gradually reduced, and the length of the hood body is 2-3 times of that of the filtrating layer.

The invention relates to a novel tool of a tire crusher, which is mainly used for cutting waste tires into blocks. The tool comprises two shaft levers (1) which are arranged in parallel; a plurality of blades (2) are tightly sleeved on each shaft lever (1); each blade (2) comprises a blade body (2.1) and blade teeth (2.2) arranged on the outer edge of the blade body (2.1). The tool is characterized in that the blade teeth (2.2) of the plurality of blades (2) are in helical arrangement on the shaft levers (1), and the blades (2) on the two shaft levers (2) are in bilateral symmetry arrangement. The tool has the advantages of small contact area of blade edge when the tire is cut, high cutting efficiency, replaceable blade teeth of the blades, and long service life of the blades.

The invention discloses a novel sawing machine blade connection structure and a manufacturing method thereof and aims at solving the problems that the blade is not firmly fixed, and spare parts, such as a saw plate are short in service life and poor in production continuity. The novel sawing machine blade connection structure comprises a saw plate arranged on a main shaft of a sawing machine; the novel sawing machine blade connection structure is characterized in that the saw plate comprises a man saw plate and an auxiliary saw plate; the main saw plate is arranged on the main shaft of the sawing machine through a main shaft connection through hole; a shaft neck shaft sleeve is arranged on a saw plate shaft neck of the main saw plate; the auxiliary saw plate is connected with the shaft neck shaft sleeve arranged on the saw plate shaft neck of the main saw plate through a shaft sleeve sink hole; a sawing machine blade is arranged between the main saw plate and the auxiliary saw plate; and is arranged on a saw plate installation flange of the shaft neck shaft sleeve through as blade installation hole; and the manufacturing method of the connection structure comprises manufacturing of the main saw plate, the auxiliary saw plate and the shaft neck shaft sleeve, machining of the sawing machine blade and combined installation of various parts. The novel sawing machine blade connection structure is reasonable in design, connection of the blade and the saw plate can be tighter, whole set replacement is not needed when abrasion is generated, and the novel sawing machine blade connection structure is simple and convenient to maintain, high in production efficiency and low in consumption of the spare parts.

The invention discloses an automatic water reservoir which comprises a multistage filter water box and a water storage tank, wherein an automatic water inlet control valve is arranged on a water inlet pipe of the multistage filter water box, a water outlet pipe is communicated with the water storage tank, a water stop sheet is arranged in the water storage tank, a cold water tank is arranged at one side of the water stop sheet, a hot water tank is arranged at the other side of the water stop sheet, the lower parts of the cold water tank and the hot water tank are respectively provided with a water drain valve, the water stop sheet is provided with a control valve for controlling water conveyed from the cold water tank to the hot water tank, the upper end surface of the water stop sheet is hermetically connected with the bottom surface of the multistage filter water box, a controller is arranged at the position outside and above the hot water tank, a heater is arranged below the hot water tank, a heat-insulation layer is arranged on the surface of the hot water tank, an exhaust pipe is arranged on the body of the hot water tank, a temperature sensor, an upper water level sensor and a lower water level sensor are arranged in the hot water tank, and the heater, the temperature sensor, the water delivery control valve and the upper and the lower water level sensors are respectively connected with the controller electrically. The automatic water reservoir can be used for storing purified tap water and boiled drinking water, thus reducing equipment, saving space and creating more convenience for people on the basis of purification and water storage.

The invention discloses a method for preparing a cable insulating layer and an extruder. According to the method for preparing the cable insulating layer provided by the invention, an uncolored cableinsulation material and color master batches are separately added to an extruder for extrusion to prepare the cable insulating layer, so that a series of problems encountered in the prior art in whichcolorized cable insulation materials are directly prepared are avoided, for example, a weighing step of colorized raw materials and a pollution problem of the raw materials to a workshop are avoided;when raw materials of the cable insulation material with different colors are replaced during the process of preparing the colorized cable insulation materials, the problems that mixed-color materials are produced when a double-screw extrusion granulator is switched on and switched off and a very long time is needed for cleaning the double-screw extrusion granulator are avoided, and the problem of storage of the prepared colorized cable insulating material is avoided. The production and application cost of the uncolored cable insulation material is low, the product quality is high, the production energy consumption and the storage management cost are reduced, waste and environmental pollution are reduced, the production efficiency is improved, and the cost of preparing the cable insulating layer is reduced.

The invention provides a switch cabinet operating environment improving system and method. The system comprises a switch cabinet, an axial flow fan, an industrial constant temperature dehumidifier, and temperature and humidity sensors, wherein the switch cabinet is arranged in a closed switch room; the axial flow fan is mounted on a pressure relief plate on the top of the switch cabinet; the axialflow fan is in signal connection with a controller in the switch room; the switch room is also internally provided with the industrial constant temperature dehumidifier and the temperature and humidity sensor for detecting the switch cabinet; the temperature and humidity sensor that detects air temperature and humidity is arranged outside the switch room; and the industrial dehumidifier and the temperature and humidity sensors inside and outside the switch room are in signal connection with the control system. The air in the switch cabinet is ensured to be dry, and insulation flashover and insulation damage of the equipment in the switch cabinet are reduced.