219 results about "Electrical room" patented technology

Temperature-dependent switch (10) comprising: a switch housing (12) with a lower part (16) and a cover part (18) closing the lower part (16);a temperature-dependent switching mechanism (14) which is arranged in the switch housing (12) and has a movable contact part (30), a bimetallic element (26) and a spring element (24) cooperating with the movable contact part (30), wherein the switching mechanism (14) is configured to switch between a low-temperature position, in which it presses the movable contact part (30) against a contact surface (34) arranged inside the switch housing (12) and thereby establishes an electrical connection between a first electrical external terminal (56) of the switch (10) and a second electrical external terminal (58) of the switch (10), and a high-temperature position, in which it keeps the movable contact part (30) spaced away from the contact surface (34) and thereby interrupts the electrical connection between the first electrical external terminal (56) and the second electrical external terminal (58);and a spacer element (44) which is arranged inside the switch housing (12) between the lower part (16) and the cover part (18); wherein at least one section (42) of the spring element (24) is arranged between the spacer element (44) and the switch housing (12) and is fixed in position by an interaction of the spacer element (44) and the switch housing (12), and wherein at least one section (52) of the bimetallic element (26) is arranged between the spring element (24) and the spacer element (44) and is supported on the spacer element (44) in the high-temperature position of the switching mechanism (14).

The invention discloses an electrical room ventilation opening arrangement optimization method, which comprises the steps of determining the optimal position of a ventilation opening of an existing electrical equipment room through Fluent software simulation, and counting each numerical value of the optimal position, including room volume, total equipment heat dissipation capacity, room air supply capacity, area size of an air supply outlet and the number of the air supply outlets; constructing and training a neural network model, taking each counted numerical value as the input of a neural network, and taking the optimal position of the ventilation opening as the output; calculating the air supply amount and the number of air supply outlets required by the electrical equipment room to be designed, determining the optimal position of the ventilation opening of the electrical equipment room to be designed through the trained neural network model, and finally verifying whether the result meets the requirement or not through Fluent software simulation. According to the method, the number of the ventilation openings required by the electrical equipment room can be reasonably calculated, the neural network is introduced, the positions of the ventilation openings are optimized, and the design efficiency of the electrical equipment room is improved.

The invention discloses a power distribution room comprehensive safety monitoring alarm system and a fault prediction method.The alarm system comprises a data acquisition module, a programmable logic controller and a communication module, and the data acquisition module comprises a temperature and humidity sensor, a smoke sensor, a water sensor and a gas monitoring sensor; the programmable logic controller comprises a power supply module, an analog quantity input module, a calculation and storage module, an analog quantity output module, a contactor, an indicating lamp and a local area network, the communication module comprises a power distribution room monitoring center and a wireless communication device, and the data acquisition module, the programmable logic controller and the communication module are connected in sequence. The fault prediction method comprises the following steps of data acquisition and preprocessing, feature extraction, model training and fault prediction and preventive maintenance decision making. The power distribution room safety monitoring mode is comprehensive, the automation degree of alarm is improved, the inspection pressure of operation and maintenance personnel is shared, and emergency safety events can be prevented or handled.

A biostimulator and a biostimulator system for septal pacing are described. The biostimulator includes a housing having an electronics compartment containing pacing circuitry and an electrical extension having an elongated electrical conductor, wherein the electrical extension extends from a proximal extension end at the housing to a distal extension end. The biostimulator further includes a pacing extension body mounted on the distal extension end of the electrical extension. The pacing extension body includes a pacing electrode electrically coupled to the pacing circuitry through the elongated electrical conductor, a fixation mechanism, and a drive mechanism to transmit torque to the fixation mechanism. Other embodiments are also described and claimed.

The invention relates to an integrated multi-mode cooling unit, an automatic adjusting method and an electrical room, the integrated multi-mode cooling unit comprises a unit body, condenser cooling equipment used for cooling a condenser, hot air cooling equipment used for cooling hot air and a control module, and the unit body is provided with an air temperature adjusting cavity; the condenser cooling device and the hot air cooling device are arranged in the machine body, the hot air cooling device comprises at least two sets of refrigeration modules, an evaporator of each set of refrigeration module is arranged in an air temperature adjusting cavity, a hot air inlet is formed in the top of the air temperature adjusting cavity, and a cold air outlet is formed in the side wall of the air temperature adjusting cavity; the unit is provided with a first cooling module (cold water cooling) and a second cooling module (cold air cooling), so that free switching between an air cooling mode and an air cooling and water cooling combined mode is realized. No matter in a high-temperature and water-deficient environment or in a low-temperature and water-cooling-free condition, the unit can operate stably, and the applicability is remarkably improved.

The invention relates to the field of electrical cabinets, in particular to a high-voltage electrical cabinet with a moisture-proof device, which comprises a cabinet body, the interior of the cabinet body is divided into an upper mounting chamber and a lower electrical chamber, ventilation openings are formed in the two side walls of the electrical chamber in a penetrating manner, dehumidification mechanisms are arranged in the ventilation openings, and ventilation filter screens are arranged on the inner walls of the ventilation openings. A fan is fixedly arranged in the center of the mounting chamber, the upper end of the fan is communicated with an air outlet pipe, a humidity sensor is arranged in the air outlet pipe, cooling mechanisms are arranged at the two ends in the mounting chamber, and the cooling mechanisms are connected with the corresponding dehumidification mechanisms. The air circulation area between the condensation plates can be automatically adjusted according to humidity changes, the heat dissipation and dehumidification efficiency is effectively improved, adaptability is high, meanwhile, condensed water drops and attached dust impurities on the surfaces of the condensation plates can be effectively scraped, and the condensation and dehumidification effect of the surfaces of the condensation plates is guaranteed.

The invention relates to the technical field of electric power, in particular to an insulation arc extinguishing gas leakage monitoring method and device, a storage medium and electronic equipment. The monitoring method comprises the following steps: monitoring the air pressure and temperature in the electrical room, and monitoring the concentrations of insulating arc extinguishing gases at different point positions in the electrical room; when it is monitored that the insulation arc extinguishing gas concentration of one point reaches a threshold value, the time difference between the insulation arc extinguishing gas concentration of the point and the insulation arc extinguishing gas concentration of the adjacent point reaches the threshold value is measured, and the insulation arc extinguishing gas concentration variable quantity of the point when the insulation arc extinguishing gas concentration of the adjacent point reaches the threshold value is monitored; and according to the measured value of the air pressure, the measured value of the temperature, the time difference and the concentration variable quantity of the insulating arc-extinguishing gas, the leakage position of the insulating arc-extinguishing gas in the electrical room is positioned. According to the monitoring method provided by the invention, the leakage position of the insulation arc extinguishing gas can be accurately positioned, the safety of electric equipment is ensured, and the potential risk is reduced.

The utility model discloses an electronic paper waveform temperature point comprehensive test box, which is characterized in that electronic paper is placed on a tray, the test box comprises a box body, an electrical room and a test part are arranged in the box body, the test part comprises a plurality of independent test units, a plurality of window plates are arranged on the front surface of the box body, and the window plates correspond to the independent test units one by one. Each window plate is provided with a plurality of sockets, the trays are inserted into the independent test units from the sockets, a heater and a temperature detector are installed in each independent test unit, and a control circuit used for controlling the heater and the temperature detector is installed in the electrical room. According to the electronic paper waveform temperature point comprehensive test box, electronic paper can be rapidly and accurately processed at a specific temperature, and the optimal waveform temperature point of the electronic paper can be conveniently found out. Different temperature treatments can be carried out on a large amount of electronic paper at the same time, the waveform temperature point testing efficiency of the electronic paper is greatly improved, and the production efficiency of products is improved.

The invention discloses an emergency power supply cabinet with a temperature and humidity adjusting function, and belongs to the technical field of power supply cabinets, the emergency power supply cabinet comprises a cabinet body, the inner side of the cabinet body is divided into a regulation and control chamber and an electrical chamber through a partition plate, and a temperature and humidity adjusting mechanism is installed on the inner side of the regulation and control chamber and comprises a shell fixedly installed in the middle of the regulation and control chamber; a rotating disc is rotatably installed in the middle of the shell, the inner side of the rotating disc is filled with dehumidification filler, the inner walls of the two sides of the shell are each divided into an air inlet cavity and an air return cavity through two baffles, one side of each air inlet cavity is connected with an air cooler, the other side of each air inlet cavity is connected with an air outlet pipe located at the bottom of the electrical room, and one side of each air return cavity is connected with an air heater through an air pipe. Through the arrangement of the air cooler and the hot-air blower, the air cooler introduces cold air into the electrical room, the cold air flows downwards, so that hot air in the electrical room can be pushed to flow upwards, the hot-air blower pumps the hot air out of the electrical room, and the power supply cabinet can be cooled.

In a vehicle drive unit, a drive chamber, a first electrical chamber, and a second electrical chamber are integrally arranged in such a manner that the first electrical chamber and the second electrical chamber are each adjacent to the drive chamber. The vehicle drive unit includes a first opening provided in a first wall surface of the first electrical chamber, and a second opening provided in a second wall surface of the second electrical chamber that is in contact with the first wall surface. The second opening is connected to the first opening. The vehicle drive unit includes an electrical equipment power line that electrically connects first electrical equipment and second electrical equipment. The electrical equipment power line is passed through the first opening and the second opening and disposed in the first electrical chamber and the second electrical chamber.

The application discloses a kind of leakage detection methods of liquid cooling system, it is related to leakage detection technical field, including, in the backwater port of liquid cooling unit, pressure sensor is arranged, the pressure in backwater pipeline is monitored in real time;Water immersion sensor is laid out in the low-lying area of battery chamber and electrical chamber, is connected with DC24V power supply line by water immersion rope, for detecting liquid leakage state;Simultaneously, insulation detection module is configured, for measuring the insulation resistance of high-voltage busbar to ground in system.Through two-way detection mechanism, it is combined to judge that backwater pressure is lower than preset threshold value or water immersion sensor output alarm and insulation resistance anomaly, once judging that leakage fault occurs, system executes protection action including PCS emergency stop, direct current circuit breaker tripping and battery disconnecting;The application overcomes the problem of single monitoring means in the prior art, such as slow reaction, false negative or false positive, etc., realizes fault judgment and protection action at the initial stage of leakage, thereby improving the safety and reliability of liquid cooling system operation.

The invention provides an automatic fire extinguishing system for an electrical room, and relates to the technical field of automatic fire extinguishing. Comprising a first fire detector used for detecting a first fire signal in each electrical cabinet; the first fire extinguishing nozzles are arranged in the electrical cabinets; the second fire detector is used for detecting a second fire signal in the electrical room; the second fire extinguishing nozzle is arranged on the roof of the electrical room; the first fire extinguishing nozzle and the second fire extinguishing nozzle are mounted on the conveying pipeline so as to convey a fire extinguishing agent to the first fire extinguishing nozzle and the second fire extinguishing nozzle; and the controller controls the first fire extinguishing nozzle to spray a fire extinguishing agent to extinguish the electrical cabinet according to the first fire signal, or controls the second fire extinguishing nozzle to spray a fire extinguishing agent to extinguish the electrical room according to the second fire signal. When the first fire signal is detected, the corresponding first fire extinguishing nozzle is controlled to spray the fire extinguishing agent to carry out local fire extinguishing on the electrical cabinet, and the purpose of precise fire extinguishing is achieved.

The invention provides a self-propelled flash welding rail heat treatment vehicle for urban rail transit, and belongs to the technical field of rail engineering machinery. Comprising a frame, a shed, a hook buffer device, hydraulic supporting legs, a bogie, a fuel tank, a wind source device, a tool box, an auxiliary generator set, a cab, an electrical room, a power room, a working room and a welding machine room. And a welding machine device and a movable shed capable of being electrically opened and closed are arranged in the welding machine chamber. The device has the advantages of integration of welding and heat treatment, high automation degree, environmental protection, energy conservation, flexible operation and the like, and is suitable for urban rail transit steel rail welding operation.

The utility model relates to the technical field of pump stations, and discloses a water and electricity separated box type pump station which comprises a supporting plate, a plurality of supporting columns are fixedly connected to the top of the supporting plate, a water tank is fixedly connected to the tops of the supporting columns, and an electrical room is fixedly connected to the position, located on one side of the water tank, of the top of the supporting plate. A ventilation fan is fixedly installed on the outer wall of the electrical room, a water pump room is fixedly connected to the position, below the electrical room, of the bottom of the supporting plate, and a water pump is fixedly installed on the inner bottom wall of the water pump room. According to the water and electricity separation type box-type pump station, through mutual cooperation of the electrical room and the water pump, the water pump and the conveying pipeline can be arranged below the electrical room, so that electrical equipment can be separated from water, even if water leakage occurs, the electrical equipment cannot be affected, and after water leakage occurs, the water and electricity separation can be achieved. Workers do not need to worry about the situation of electric leakage caused by the high water level, electrical equipment is safely controlled and operated, and the overall safety of the device is improved.

The utility model discloses a shock absorption and noise reduction air brake structure for an air compressor unit ventilation system in an electrical room, which comprises a shock absorption support fixed on a top plate of an electrical room module, a ventilation pipeline sequentially penetrates through the shock absorption support, a sound insulation structure and a dehumidification structure from bottom to top, and a servo motor is fixed on the ventilation pipeline through a motor support. A plurality of brake pads are installed in an air inlet of the ventilation pipeline, a motor shaft of the servo motor is connected with the left end of a center shaft of one brake pad through a coupler, a synchronous belt wheel is installed on each brake pad, and the servo motor drives the synchronous belt wheels to control the opening size of the brake pads. The dehumidification structure and the shock absorption and noise reduction structure are adopted to conduct shock absorption, noise reduction and dehumidification on the ventilation system of the air compressor unit module of the electrical room, corrosion to the air compressor unit module of the electrical room when the humidity in the air is too high is avoided, meanwhile, the shock absorption and noise reduction structure is adopted, noise and vibration generated during large-flow air inlet are reduced, and the service life of the air compressor unit module is prolonged. And noise pollution is reduced.

The utility model discloses a folding table convenient to adjust table top size, which belongs to the technical field of table adjustment, and comprises a folding table main body rotatably arranged on the side wall of an electrical room, the folding table main body comprises a first table top, a second table top and a support plate, the support plate is rotatably arranged on the lower side of the first table top, and the second table top is rotatably connected to the first table top. When the second table top is unfolded, the second table top and the first table top are located at the same horizontal height, and the lower side of the second table top makes contact with the supporting plate; when the second table top is folded, the second table top is located above the first table top, the supporting plate is folded to the position below the first table top, and the first table top completely shields the supporting plate. When the size of the table top is adjusted, the size of the table top can be adjusted only by rotating the second table top to unfold or fold the second table top. Meanwhile, when the second table top is unfolded, the supporting plate needs to rotate to the lower side of the second table top; when the second table top is folded, the supporting plate should be retracted to the position below the first table top.

The utility model relates to the technical field of energy storage, and discloses a liquid cooling and energy storage integrated cabinet. Comprising a cabinet body, and the interior of the cabinet body is divided into a battery chamber and an electrical chamber; a battery rack is fixed in the battery chamber, a plurality of liquid cooling battery packs are fixed on the battery rack, and liquid cooling pipelines communicated with liquid cooling plates of the liquid cooling battery packs are fixed on the battery rack; an electrical equipment mounting rack is fixed in the electrical room; a cabinet body distribution box, a bidirectional converter, a liquid cooling unit, a high-voltage box, a fire-fighting controller, a battery management master controller, an energy management unit, a UPS (Uninterrupted Power Supply) and a travel switch are mounted on the electrical equipment mounting rack; the liquid cooling unit is communicated with the liquid cooling pipeline, and the high-voltage box is communicated with the positive electrode and the negative electrode of the battery pack. The liquid cooling and energy storage integrated cabinet is compact in structure; modular design is adopted; the capacity is large; the capacity topology is simple and can be used in a single machine or a combined cabinet; disassembly, assembly and maintenance are convenient, and operation and maintenance cost is low.

A commercial water dispenser convenient to overhaul comprises a machine body, an electrical room is arranged on the machine body, a panel is arranged at an opening in the front side of the electrical room in a rotating opening and closing mode, and a supporting part and a fixing part are arranged between the machine body and the panel; after the panel is opened, the machine body is supported on the panel through the supporting part, and after the panel is closed, the panel is fixed on the machine body through the fixing part. According to the utility model, the panel is rotatably opened and closed at the opening at the front side of the electrical room, the supporting part and the fixing part are arranged between the machine body and the panel, and after the panel is opened, the machine body is supported on the panel through the supporting part, so that the panel cannot be automatically closed, thereby being convenient for workers to overhaul the interior of the electrical room in the later period; the water dispenser does not need to be moved away, the front sides of the electric devices such as the purified water tank and the hot water tank can be conveniently overhauled, and after the panel is closed, the panel is fixed to the dispenser body through the fixing part, so that the panel cannot be automatically opened after being closed.

The utility model relates to the field of unbalance loading of cranes. The utility model discloses a device for preventing unbalance loading of a ladle crane. Comprising a weight sensor which is installed at the joint of a crown block main trolley frame and two arms of a gantry hook cross beam and is used for measuring the weight of a steel ladle, a double-channel data transmission device which is in electric signal connection with the weight sensor and is installed on the crown block main trolley frame, a PLC system installed in a crown block electric room, a double-channel weighing meter installed in a crown block cab and a displayer. The two steel wire ropes on the two sides of the gantry hook cross beam are each connected with a lifting hook used for hanging a steel ladle, and the weight sensors comprise the left weight sensor installed on a left arm of the gantry hook cross beam and the right weight sensor installed on a right arm of the gantry hook cross beam. And the dual-channel data transmission device, the dual-channel weighing meter and the display are all in electric signal connection with the PLC system.

The invention discloses a novel battery pack with an energy storage structure, which comprises a box body assembly, a battery pack and a battery pack, the supporting assembly is arranged near the middle of the box body assembly in the height direction, and the supporting assembly divides the box body into an upper-layer space and a lower-layer space; the upper-layer space is divided into an electrical chamber and a battery chamber; the battery modules are arranged in the lower-layer space and the battery chamber; the electrical assembly is mounted in the battery chamber; and the box cover covers the box body assembly. In a limited space, the energy storage capacity is increased as much as possible, and matching with the whole vehicle is not affected.

The invention discloses a grab ship unloader cabin bottom anti-collision system and method based on an image recognition technology, and the system comprises an image recognition unit which comprises a high-definition camera installed in the middle of a cantilever crane and an image processing server installed in a PLC room, a PLC control unit which comprises a PLC module and a switch which are installed in the PLC room, and an image processing unit which is installed in the PLC room. The PLC module receives the data information of the exposure condition of the bottom plate at the bottom of the cabin transmitted by the image processing server, and outputs a control instruction; and the mechanism driving unit comprises a lifting frequency converter and an opening and closing frequency converter which are arranged in the electrical room, and a lifting opening and closing motor which is arranged in the machine room. According to the system, the risk that the grab bucket hits the bottom of a cabin in the operation process of the grab bucket ship unloader, especially in the cabin cleaning operation stage, is reduced, the cost needed for maintaining a cabin bottom plate is saved, and the overall operation efficiency of a bulk cargo wharf is improved.

The invention belongs to the field of electrical device installation, and mainly relates to a device and method for intelligently installing an electrical panel cabinet, and the device is characterized in that a plurality of steel beams are installed on the roof of an electrical room in a transversely and longitudinally staggered manner; the mounting vehicle is hung below the steel beam and can move in the direction of the steel beam; the hanging scaffold is connected with the mounting vehicle through a telescopic rope, a moving module, a positioning module and an alarm module are arranged on the hanging scaffold, and moving, mounting and alarming of the mounting vehicle are controlled; the automatic induction lock catch is used for being fixed with a fixing ring on the plate cabinet; the electromagnetic chuck is used for being adsorbed on the top of the plate cabinet; and the stabilizing device and the horizontal device are respectively arranged on the left side and the right side of the hanging scaffold and are used for keeping the hanging scaffold stable. The top space of the electrical room is utilized, installation is more convenient and clear, the installation vehicle automatically searches for positioning points on the ground, the levelness and perpendicularity are intelligently adjusted, the construction safety of workers is guaranteed, the installation quality is improved, and the installation speed is increased.

The invention discloses a subway gantry crane control system based on PLC wireless control and monitoring. The subway gantry crane control system comprises a master station PLC control module, a slave station PLC control module, a first wireless communication module, a second wireless communication module, a sensor module, a data acquisition and processing module, a video monitoring module, a human-computer interaction interface and a UPS module. The master station PLC control module, the first wireless communication module and the UPS module are all arranged in an electrical room of the metro gantry crane, the slave station PLC control module, the second wireless communication module and the data acquisition and processing module are all arranged in an electrical cabinet of a hoisting trolley of the metro gantry crane, and the sensor modules are respectively arranged on the hoisting trolley and a mobile cart of the metro gantry crane. The video monitoring modules are respectively arranged on a hoisting trolley of the metro gantry crane and in a cab, the man-machine interaction interface is arranged in the cab, and the electrical room and the cab are both arranged on a main beam platform of the metro gantry crane. The system has the advantages that wiring is simple, installation and transition are convenient, troubleshooting is convenient, and labor is saved.

The utility model relates to a round stacker-reclaimer without a support structure, which comprises a stacking electrical room and a reclaiming electrical room, the stacking electrical room is provided with a stacker PLC (programmable logic controller), the reclaiming electrical room is provided with a reclaimer PLC, a stacking slip ring mechanism is arranged close to the stacking electrical room, and the stacking electrical room is connected with a power supply through the stacking slip ring mechanism. A material taking sliding ring mechanism is arranged close to the material taking electrical room, and the material taking electrical room is connected with a power source through the material taking sliding ring mechanism. The stacker PLC is provided with a wireless module I and an antenna I, the reclaimer PLC is provided with a wireless communication module II and an antenna II, the stacker PLC is in wireless communication connection with the reclaimer PLC, the antenna I is arranged outside the stacking electrical room, and the antenna II is arranged outside the reclaiming electrical room. According to the utility model, the stacking slip ring mechanism and the reclaiming slip ring mechanism are arranged, the stacker and the reclaimer realize independent power supply respectively, and the stacker PLC and the reclaimer PLC are in wireless communication, so that faults such as cable core breakage and strand breakage are avoided.

The utility model discloses a nozzle stress application regulator adjustment test bench, which comprises a control room, an experiment room, a hydraulic room and an electrical room, the experiment room is arranged between the control room and the hydraulic room, the electrical room is connected with one side of the hydraulic room, the control room comprises an industrial personal computer and a control cabinet, and the industrial personal computer is electrically connected with the control cabinet. According to the utility model, the fuel oil temperature is controlled by matching the heat-conducting oil furnace with the heat exchange mechanism, so that low-temperature oil and high-temperature oil are mixed to realize accurate control on the fuel oil temperature. When the temperature of the fuel oil is higher than the set temperature, the heat conduction oil furnace stops heating the fuel oil, and fine adjustment control is conducted on the temperature of the high-temperature fuel oil by injecting a certain amount of cooling oil into the high-temperature fuel oil pipeline; and finally, the set temperature value of the fuel oil is reached. The device is mainly used for the adjustment test, the acceptance test and the long-term test of the nozzle stress application regulator. And multi-type accessory joint long-term test of the stress application system can be carried out. Functional performance and reliability of the test piece are verified or confirmed through experiments.

The utility model discloses a modularized stackable energy storage cabinet which comprises a cabinet body, a water chilling unit, a battery module, a high-low voltage connecting piece, a high-voltage box, an energy storage converter and an electrical box, and a direct current chamber, a water machine chamber and an electrical chamber which are independent from one another are arranged in the cabinet body; the direct current chamber is internally provided with a sealing plate, the sealing plate divides the direct current chamber into an inner side and an outer side which are mutually independent, the inner side of the direct current chamber is provided with a plurality of battery modules, the battery modules are arranged in parallel, and the battery modules are connected through high-low voltage connecting pieces. The technical effects are that the direct current chamber, the water machine chamber and the electrical chamber are mutually independent and do not influence each other during maintenance and disassembly, and the safety is high; a modular design is adopted as a whole, all modules can be deleted and combined according to actual use requirements, and personalized customization can be supported; the overall mechanism is compact, the volume energy density is high, horizontal cabinet combination can be achieved, longitudinal stacking combination can also be achieved, the voltage, electric quantity and power adjusting range is wide, and the application range is wider.

The utility model discloses a synchronous control system of winch type vertical ship lifting equipment suitable for multiple working conditions, and relates to the technical field of ship equipment, in particular to the synchronous control system of the winch type vertical ship lifting equipment suitable for the multiple working conditions, which comprises a ship bearing platform, and an electrical room and a control room which are respectively arranged on two sides of the ship bearing platform, a plurality of first lifting point devices and second lifting point devices are arranged on the two sides of the ship bearing platform correspondingly. The first lifting point device and the second lifting point device respectively comprise corresponding winch motors; the control room comprises a plurality of first control cabinets, a first power supply cabinet, an operation table and a first frequency conversion cabinet; the electrical room comprises a second control cabinet, a second power supply cabinet and a second frequency conversion cabinet; the first frequency conversion cabinet comprises a plurality of first frequency converters; the second frequency conversion cabinet comprises a plurality of second frequency converters; all the hoisting point devices can be controlled in a centralized mode through the operation table in the control room, and all the winch motors can be accurately monitored.

The utility model relates to a positive pressure explosion-proof gas chromatograph, which comprises a gas circuit chamber, an electrical chamber, an EPC chamber and a temperature control chamber, the electrical chamber, the EPC chamber and the temperature control chamber are filled with explosion-proof gas to form a positive pressure explosion-proof cavity, and box bodies of the electrical chamber, the EPC chamber, the temperature control chamber and the gas circuit chamber are mutually welded to form a whole. And sealing strips are arranged on respective box doors of the electrical chamber, the EPC chamber, the temperature control chamber and the gas circuit chamber so as to seal the respective box doors of the electrical chamber, the EPC chamber, the temperature control chamber and the gas circuit chamber. According to the scheme, the box bodies of all the chambers of the gas chromatograph are welded together, so that the connection is more stable and is not easy to loosen, and holes do not need to be punched on the box bodies, so that the positive pressure environment in the chambers can be prevented from being influenced by gas leakage. In addition, the workload of welding connection is small, and the production efficiency is higher. And the sealing strips are arranged, so that the sealing performance of each chamber can be ensured, and the explosion-proof safety of each chamber is improved.

This invention discloses a segmented, splicable submarine cable and a cable-changing robot, relating to the field of submarine cables and submarine cable maintenance devices. Currently, when a submarine cable fails, it can only be pulled to the surface for cutting and replacement, which is complex, inconvenient, time-consuming, and labor-intensive. The submarine cable of this invention includes watertight connectors and cables. Each end of the cable is connected to a watertight connector, forming splicable cable segments. These segments are spliced ​​together using watertight connectors to form the submarine cable. The cable-changing robot includes a cable-changing chamber, an electrical chamber, a drainage chamber, a robotic arm, robotic legs, and a propeller propulsion device. The cable-changing chamber is equipped with a disconnection and drying device. The cable-changing chamber and the drainage chamber are connected by a water supply pipe with a switch. The drainage chamber contains a high-pressure air storage tank. When a submarine cable fails, damaged cable segments or watertight connectors can be replaced directly on the seabed through the sealed space of the cable-changing chamber, improving maintenance speed and convenience, and reducing maintenance time and costs.

The utility model discloses a port crane electrical room with a moisture-proof function, and belongs to the technical field of electrical and electromechanical. Comprising a room body, ventilation openings are symmetrically formed in the two sides of the room body, a dehumidifier is installed in the room body, the ventilation opening in one side is rotationally connected with an exhaust fan, the ventilation opening in the other side is rotationally connected with an air feeder, the exhaust fan and the air feeder are both in transmission connection with a driving mechanism, and self-drooping shutters are installed in the ventilation openings. The technical effects that when the outside humidity is high, the interior of the room body is in a relatively sealed state, the situation that the outside air with the high humidity enters the room body is reduced, the load of the dehumidifier is reduced, and the humidity in the room body is conveniently and rapidly reduced are achieved.