119results about "Enclosed substations" patented technology

The utility model discloses an anti-immersion American transformer station comprising a box station, the two ends of the front side of the box station are rotatably connected with station doors, the outer side of the box station is fixedly provided with a waterproof plate, the upper part of one side of the box station is fixedly provided with a motor protection cover, the front side of the box station is fixedly provided with a rubber frame, and the surface of the rubber frame is provided with a clamping groove. Magnet pieces are evenly arranged on the surface of a clamping groove in the surface of the rubber frame in an adhesive mode, a rubber clamping ring is fixed to the surface of the station door, and a metal piece is arranged in the rubber clamping ring. According to the anti-immersion American transformer substation, the anti-seepage effect of the American transformer substation can be improved through clamping and sealing of the L-shaped waterproof plates at the heat dissipation holes in the surface of the box station, the rubber frame in the box station and the rubber clamping ring on the surface of the station door.

The invention belongs to the technical field of buried box-type substations, and particularly relates to an anti-overload new energy buried box-type substation, which comprises a buried shell, an anti-overload new energy distribution box connected to the side wall of the buried shell through a lifting assembly, and a raft plate arranged below the buried shell, and a plurality of polyurethane elastic cushions are fixedly connected between the raft plate and the buried shell. Soil pressure borne by the box body can be dispersed by means of the raft plate, uneven stress generated by soil settlement is buffered and absorbed by means of the buffering deformation characteristic of the polyurethane elastic cushion, the connecting stability of the box body and a foundation is enhanced through the supporting piles, and the problems of box body deformation and cracking and equipment connecting structure damage caused by soil settlement are effectively avoided; and the adjusting cylinder, the adjusting bolt and the supporting seat are additionally arranged between the buried shell and the raft, the height of the buried shell is accurately adjusted through the adjusting bolt, flexible correction of the levelness of the box body is achieved, and long-term stable operation of equipment is guaranteed.

The application provides a mobile relay protection device for substation load transfer, comprising: a mobile relay protection box, the bottom of the box is provided with wheels and a locking mechanism for realizing the movement and fixation of the box; a mobile relay protection device installed in the box, the device comprises a line protection module and a main transformer protection module; a special connecting cable, one end of which is fixedly connected with the mobile relay protection device, and the other end is provided with a marked special connector, the special connector is configured as a quick connection plug for detachable connection with a terminal block of a substation interval terminal box or a terminal block of a control cabinet; wherein the special connecting cable adopts a flexible and pressure-resistant cable, and the current terminal wiring structure of the quick connection plug is designed to prevent open circuit.

The utility model relates to box type substation technical field, concretely is a heat dissipation type box type substation, include: box, exhaust port and air inlet, the outer side wall fixed setting of box has the exhaust port, and the below of exhaust port is provided with air inlet, the outer side wall fixed setting of box has the connecting block, and the connecting block fixed setting has the limit slot, and the connecting assembly and auxiliary assembly are provided on the box, through being provided with connecting assembly and auxiliary assembly on the connecting end box of heat dissipation type box type substation, through the cooperation use among support frame, dust screen, filter screen etc. structure, can install after the dismantling cleaning airing of dust screen and filter screen, and can replace in time after dust screen and filter screen are damaged, and the exhaust port and air inlet air are unobstructed, will not influence the heat dissipation of box type substation box.

This utility model provides a prefabricated box-type substation enclosure structure, including a substation body and multiple support leg mechanisms. Multiple mounting rings are horizontally fixedly connected to the bottom end of the inner surface of the substation body, and the multiple support leg mechanisms are respectively fixedly connected to the bottom ends of the mounting rings. This prefabricated box-type substation enclosure structure, by setting multiple support leg mechanisms, allows for individual adjustment of the multiple support leg structures. During adjustment, the height of each support leg can be adjusted by rotating the threaded sleeve. Furthermore, during actual installation, because the rotating seat at the bottom of the threaded sleeve rotates horizontally while the connecting seat rotates vertically, a structure similar to a caster wheel is formed, adapting to various road surfaces. This makes installation more convenient and ensures the enclosure remains level during later use, thereby improving the practicality of the substation.

This utility model relates to a ventilation structure for a prefabricated substation, including a box and a transformer. The transformer includes a lower base and an upper yoke. A transformer fan is mounted on the base. The transformer is located inside the box on one side. Multiple sets of forward and reverse fans are located at the upper end of the box corresponding to the transformer, and bottom ventilation holes are located at the bottom corresponding to the transformer. Ventilation windows are located on the lower ends of both sides of the box. A first temperature sensor is located on the side of the box without the transformer, a second temperature sensor is located on the transformer base, and a third temperature sensor is located on the upper yoke. Ventilation adjustment components are located on both sides of the box, each including a movable baffle. The ventilation windows are blocked by the corresponding baffle. This utility model is designed to address special conditions such as uneven internal temperature and low external temperature environments in prefabricated substations, enabling flexible adjustment according to ventilation needs under different circumstances.

This utility model discloses a locking device for a substation, including a base, a housing mounted on top of the base, and a door hinged to the front surface of the housing; a locking assembly, including an insert plate mounted on the front surface of the door, a threaded groove on the front surface of the insert plate, a stabilizing seat mounted on the top of the base and located on one side of the housing, a slot on the front surface of the stabilizing seat for the threaded groove to be inserted, a threaded hole on the rear surface of the stabilizing seat and communicating with the slot, and a threaded rod threadedly connected to the threaded hole, one end of which can be threadedly connected to the threaded groove; and a knob mounted on the other end of the threaded rod. The beneficial effects of this utility model are: through the designed locking assembly, the open door can be stabilized. Compared with the existing technology of positioning rod and positioning hole cooperation, it effectively avoids the friction and wear problem caused by frequent insertion and removal, improves the locking stability of the door, and ensures the safety of substation equipment maintenance and other operations.

This utility model discloses a top cover, a box-type power station, and a box-type room. The top cover includes a cover plate, an upper baffle, a lower baffle, and a perforated plate. The cover plate includes a downward-curving eave. The upper baffle abuts against the cover plate. The lower baffle includes a bottom and at least one side. The perforated plate is located inside and below the cover plate, and its edges abut against the lower baffle. The perforated plate and the cover plate are joined together to form a first air duct. The eave, the upper baffle, and the lower baffle are staggered and joined together to form a curved second air duct. This utility model can achieve better ventilation and heat dissipation effects and a higher level of protection.

To provide a power reception facility in which a gas insulation switching device main body and a mobile device connector part can be housed in an indoor space at low cost without providing a dead space in the site of the facility, and connection with a mobile device can be easily established even when the gas insulation switching device main body and the mobile device connector part are housed in an indoor space.SOLUTION: A power reception facility 1 includes a gas insulation switching device main body 2 and a mobile device connector part 3. The gas insulation switching device main body 2 and the mobile device connector part 3 are separate from each other but are normally connected through a cable 20 for movement. The gas insulation switching device main body 2 and the mobile device connector part 3 are housed in a tent-type building 300, and wheels 40 are attached to the mobile device connector part 3. A rail 302 on which the wheels 40 are put is disposed in the tent-type building 300. The mobile device connector part 3 can move along the rail 302 in an area from a prescribed position in the tent-type building 300 to an entrance 301, and can move freely in an area outside the entrance 301.SELECTED DRAWING: Figure 2

The utility model relates to an assembly structure for a preassembled transformer substation in the technical field of transformer substation assembly, which comprises two slide rails which are arranged in parallel at an interval, the top surface of each slide rail is provided with a guide groove with an opening at the upper end, and the bottom of each slide rail is provided with a plurality of height-adjustable block-up blocks at intervals along the axial direction; sliding parts embedded in the guide grooves are arranged at the two ends of the sliding plate respectively; the jacking piece is arranged on the lower plate surface of the sliding plate and used for driving the sliding plate to be separated from the sliding rail to ascend; according to the utility model, through the cooperation of the sliding plate and the sliding rail, the assembly part can enter from the side opening of the transformer substation shell, and the assembly part is moved to a preassembling position by combining the jacking piece; according to the heightening block of the slope-screw linkage mechanism, horizontal movement of the second block is driven by rotating the adjusting screw to be converted into vertical lifting of the first block, height adjustment of the sliding rail is achieved, and the heightening block adapts to complex ground conditions.

The utility model provides an operating tool for replacing a pole-mounted transformer without power cut, which comprises a mobile box transformer vehicle, a first rotating frame is fixed at the top of the mobile box transformer vehicle, a first rotating shaft is rotatably matched in the first rotating frame, two supporting rods are fixed on the first rotating shaft, and hydraulic cylinders are fixed in the supporting rods. A lifting basket is arranged at the output end of the hydraulic cylinder, a sliding plate is arranged in the lifting basket, a crawling ladder is fixed to the movable box transformer substation vehicle, an upward sliding device is arranged on the movable box transformer substation vehicle, and the upward sliding device comprises a placing plate, a sliding structure and a limiting structure. According to the utility model, the first rotating frame is fixed at the top of the mobile box transformer vehicle, the hydraulic cylinder is arranged in the supporting rod, and the lifting basket is arranged at the output end of the hydraulic cylinder, so that a worker can be directly conveyed to a high place through the supporting rod and the lifting basket on the mobile box transformer vehicle; and heavy devices and tools can be conveniently transported.

The utility model relates to the technical field of prefabricated cabins, in particular to a prefabricated cabin with a drainage structure, which comprises a prefabricated cabin main body, a roof is mechanically fixed at the top end of the prefabricated cabin main body, and drainage mechanisms are mechanically fixed on two sides of the outer wall of the prefabricated cabin main body and the top end of the roof. A plurality of heat dissipation mechanisms are arranged on the two sides of the outer wall of the prefabricated cabin body, communicate with the interior of the prefabricated cabin body and are located on one side of the drainage mechanism. Rainwater at the top end of a roof can slide down through the drainage eave and is far away from the outer wall of the prefabricated cabin body through mutual cooperation of internal parts of the drainage mechanism, and rainwater can circulate in the upper air channel and finally drip into the lower air channel when entering the upper air channel through mutual cooperation of internal parts of the heat dissipation mechanism. And the rainwater is discharged from the interior of the prefabricated cabin main body from the lower air passage, so that the rainwater can be prevented from remaining in the prefabricated cabin main body to influence internal equipment of the prefabricated cabin main body.

The application discloses a rat-proof baffle in a transformer substation, which comprises a rat-proof baffle and guide rails installed on both sides of the bottom plate of the rat-proof baffle. The rat-proof baffle comprises a bottom plate and a panel, the material of the panel is polyester fabric, and two fixed buckles are arranged on the side of the panel away from the bottom plate. The guide rails are attached to the door frame, and the top of each guide rail is provided with a fixed buckle connecting piece at the overlapping position of the vertical projection of the door frame. The bottom plate is connected with the guide rails through connecting buckles. The material of the panel is changed from the original aluminum material to polyester fabric, so that the rat-proof baffle is more simple to disassemble and install. Meanwhile, when large instruments are carried into and out of the equipment function room, the possibility of colliding with the equipment is greatly reduced, the safety during operation is improved, and the work efficiency is greatly improved.

The utility model discloses a preassembled outdoor box-type transformer station comprising a box body, the top of the box body is fixedly provided with a mounting rack, the interior of the mounting rack is rotatably provided with a filter cylinder through a bearing, the surface of the filter cylinder is provided with filter holes, the interior of the filter cylinder is fixedly provided with a first rotating shaft, and the first rotating shaft is fixedly provided with a second rotating shaft. A connecting plate is rotatably arranged on the right side of the filter cartridge, an air inlet hole is formed in the surface of the connecting plate, a second rotating shaft is rotatably arranged in the connecting plate, a cleaning brush is fixedly arranged on the surface of the second rotating shaft, a fixing plate is fixedly arranged at the top of the box body, and the fixing plate is rotatably connected with the first rotating shaft. A driving assembly is arranged on the surface of the first rotating shaft, a cold air assembly is arranged on the top of the box body, a filtering device in a heat dissipation system can be cleaned, the situation that the heat dissipation effect on elements in a substation is affected due to the fact that dust blocks filtering holes is avoided, and meanwhile the heat dissipation system does not need to be stopped during cleaning.

The utility model discloses a cable safety supporting platform of a photovoltaic box transformer substation, which comprises a bottom plate used for supporting a photovoltaic box transformer substation main body, the bottom surface of the bottom plate is fixedly connected with four fixing columns, the outer surface of each fixing column is fixedly connected with a fixing plate, the upper surfaces of the four fixing plates are jointly and fixedly connected with a supporting plate, and the supporting plate is fixedly connected with the bottom surface of the bottom plate. A protective shell and a limiting plate are arranged on the upper surface of the supporting plate, the protective shell is used for containing a cable, one end of the cable sequentially and vertically penetrates through the protective shell and the bottom plate upwards to be connected with the photovoltaic box transformer substation body, and the other end of the cable horizontally penetrates through the protective shell to be supported on the limiting plate and clamped in a limiting groove of the limiting plate. According to the invention, the cable of the photovoltaic box transformer substation can be effectively fixed and supported, the cable is prevented from being blown by external strong wind to swing, the service life of the cable is prolonged, and the power supply safety is improved.

A utilities enclosure comprising a grade level vault adapted for installation below ground and having an upper opening facing an interior region for containing at least a below-ground utility service, the grade level vault is formed in two halves comprising a first half and a second half, wherein each of the first half and the second half have an edge wall on opposite spaced apart end walls, each edge wall having a sacrificial pad extending outwardly therefrom which when heated and pressed together under pressure with a sacrificial pad on an opposite edge wall welds the first half and the second half together to form a seam.

The utility model provides an electric power equipment prefabricated cabin structure, and belongs to the technical field of electric power prefabricated cabins. Comprising an electric power prefabricated cabin body and mounting grooves symmetrically formed in the two ends of the electric power prefabricated cabin body, fans are fixedly embedded in the multiple mounting grooves, mounting frames are fixedly embedded in the two sides of the top end face of the electric power prefabricated cabin, and baffles are fixedly mounted on the mounting frames; a plurality of air outlet grooves are formed in the top end of the side wall of the mounting frame in a rectangular array, and an air inlet groove is formed in the bottom end of the side wall of the mounting frame. By forming the Bernoulli principle, negative pressure is generated at the top of the mounting frame in the air flowing process, air in the electric power prefabricated cabin body is sucked out, external air enters the electric power prefabricated cabin body from the mounting groove in the bottom of the electric power prefabricated cabin in the air sucking process, the air circulates in the electric power prefabricated cabin body through natural wind, and therefore the air is sucked out from the mounting groove in the bottom of the electric power prefabricated cabin body. And the heat dissipation effect on the interior of the electric power prefabricated cabin body is improved.

A method and system are disclosed for providing electrical power from a utility electric grid to a fracturing operation, and an electrically powered fracturing system. A mobile substation includes at least two transformer units that are operatively coupled to the utility electric grid in a parallel orientation, wherein the transformer units are capable of accessing power from the utility electric grid and stepping down the power for delivery to a switchgear. An electric motor is operatively coupled to a hydraulic fracturing pump and operatively controlled by a variable frequency drive. At least one open air relay cable is operatively coupled between the switchgear and the electric motor and capable of delivering power to the electric motor.

The utility model belongs to the technical field of photovoltaic power generation box-type transformer substations, and particularly relates to a photovoltaic power generation box-type transformer substation, which comprises a transformer substation, two photovoltaic panels and two cleaning wipers, and is characterized by further comprising a triangular top plate, the triangular top plate is fixedly mounted at the top of the transformer substation, and a concentric-square-shaped rod is fixedly mounted at the top of the triangular top plate; the two photovoltaic panels are both fixedly installed at the top of the triangular top plate, a threaded rod is rotatably installed in the concentric-square-shaped rod, a sliding block is installed in the concentric-square-shaped rod and located on the threaded rod in a sliding mode, and moving plates are both fixedly installed on the two sides of the sliding block. According to the photovoltaic panel cleaning device, it is ensured that only one motor needs to be used when the two photovoltaic panels are cleaned through the whole device, power consumption and manufacturing cost of the whole device are reduced, the motor is placed in the groove, the motor can be prevented from being exposed to the wind, the sun and the rain, external dust can be prevented from making contact with the motor, and therefore the motor is not prone to being damaged.

The utility model discloses a new energy box transformer substation low-voltage cabinet, which is characterized in that a frame circuit breaker is arranged in the upper half part of a cabinet body, the upper opening of the frame circuit breaker is connected with a low-voltage wire inlet copper bar extending from front to back, and the lower opening of the frame circuit breaker is connected with a low-voltage wire outlet copper bar extending from top to bottom; the lower end of the low-voltage outgoing line copper bar is connected with a low-voltage bus copper bar which is transversely fixed between the left side wall and the right side wall of the cabinet body in an insulating mode, a maintenance compartment is arranged outside the right side wall of the cabinet body, and a miniature circuit breaker, a relay and a wiring terminal are installed in the maintenance compartment. According to the utility model, the low-voltage power distribution device is transferred into the maintenance compartment on the right side of the low-voltage cabinet body, so that the risk of electric shock caused by operation personnel entering the cabinet body can be effectively avoided, the problem of inconvenient operation caused by limited space of the cabinet body can be effectively solved, and the low-voltage cabinet has the advantages of modularization, integration and convenience.

The utility model relates to substation technical field discloses a new -type box -type substation, including substation main part, door leaf, heat dissipation plate, substation main part is fixedly arranged with door leaf, is provided with heat dissipation plate on the door leaf, is provided with lifting assembly, cleaning assembly, collection subassembly on the door leaf, lifting assembly sets up on the door leaf, cleaning assembly sets up in lifting assembly, collection subassembly sets up in heat dissipation plate bottom end, the utility model discloses through the hydraulic telescopic link of lifting assembly and drive motor, drives the cleaning brush of cleaning assembly to move up and down along heat dissipation plate, and high -efficiently removes dust, sundries, the baffle of cleaning assembly and sliding groove design, ensure that cleaning path is stable, and the collection board of collection subassembly, collection strip and collection box cooperation, timely accomodate the sundries cleaned down, and automatic completion heat dissipation plate cleaning, significantly improve cleaning efficiency, effectively avoid heat dissipation hole blockage, guarantee substation heat dissipation performance, reduce the risk of failure of equipment due to bad heat dissipation.

The utility model relates to the technical field of transformer substations, in particular to a moisture-proof transformer substation convenient for routing inspection. The moisture-proof transformer substation convenient for routing inspection comprises a box body, a rainproof top cover, a protective door, hinges, a transformer and a ring main unit, the rainproof top cover is fixedly connected to the top of the box body, the hinges are installed on the front side of the box body, the protective door is installed on the two hinges which are vertically aligned, the transformer is installed in the box body, and the ring main unit is installed in the box body. A ring main unit is installed in the box body. The sliding block is pushed backwards, the elastic piece is stretched, the dustproof plate is driven to slide backwards, the water absorption sponge placed in the dustproof plate is exposed, the old water absorption sponge is taken out, the new water absorption sponge is placed in the dustproof plate, the sliding block is loosened, the elastic piece rebounds to drive the sliding block and the dustproof plate to move forwards to be reset, and the water absorption sponge can be replaced conveniently. The water-absorbing sponge is prevented from losing the adsorption function due to saturation, so that the moisture-proof effect is ensured.

The utility model discloses a modularized box-type transformer substation, which comprises two main box bodies, a plurality of main box bodies and a plurality of auxiliary box bodies, the expansion box is arranged between the two main box bodies; and the connecting piece is arranged between the expansion box and the main box body and is used for connecting the expansion box and the main box body together. Compared with the prior art, the box-type substation is divided into the two main box bodies and the expansion box by adopting a modular design, and the main box bodies are positioned on the two sides of the expansion box. When equipment needs to be additionally arranged, the expansion of the whole volume can be realized only by adding the expansion box. According to the design, the flexibility and expansibility of the transformer substation are greatly improved, flexible adjustment can be carried out according to actual requirements, and waste of resources is avoided.

The utility model relates to box transformer bottom structure technical field discloses a kind of box transformer bottom structure with moisture-proof and condensation, including base, the inside fixed connection of base has channel steel, the inside fixed connection of base has sliding slot plate, and sliding slot plate penetrates channel steel, the inside fixed connection of sliding slot plate has toothed plate, the inside sliding connection of sliding slot plate has rotating shaft, the outside fixed connection of rotating shaft has gear, and gear is engaged with rotating shaft, one end of rotating shaft is fixedly connected with motor one, one end of rotating shaft is rotatably connected with counterweight. In the utility model, start motor one, drive rotating shaft to rotate, to drive gear to rotate, by engaging with toothed plate, let motor one and counterweight move along limiting plate, to drive annular tube to move inside base, start air pump, by air intake to absorb the humidity inside base, ensure that the humidity inside base can be all discharged.

The utility model relates to the technical field of electrical equipment, and discloses a container type prefabricated substation, which comprises a container body, a protection box fixedly connected to the outer wall of one end of the container body, a sliding rail fixedly connected to the inner wall of one end of the protection box, a second sliding rail fixedly connected to the inner wall of one end, close to the sliding rail, of the protection box, and the sliding rail is parallel to the second sliding rail. Through mutual cooperation of the above structures, the device can rotate and adjust the inclination angle according to actual requirements, the adaptability of the transformer substation to different environments and requirements is enhanced, the applicability is greatly enhanced, and the transformer substation is more practical.

The utility model relates to the technical field of box-type transformer substation steel platforms, and discloses a photovoltaic box-type transformer substation steel platform, which comprises a steel plate platform, a protection structure, a ventilation structure and a plurality of groups of connecting structures, an independent base is arranged below each group of connecting structures; through cooperation of the steel plate platform, the ventilation structure, the independent base and the connecting structure, the connecting structure is reasonable in design, mounting and dismounting of the steel platform and the independent base are facilitated, positioning bolts penetrate through the through holes of different heights, then the steel platform can be conveniently mounted on different terrains, the application range of the box transformer substation steel platform is widened, and the application range of the box transformer substation steel platform is widened. Meanwhile, connection is stable and reliable, heat dissipation of the box-type transformer substation structure is effectively promoted through a ventilation structure, heat collection at the bottom of the box-type transformer substation structure is avoided, and stable operation of equipment is guaranteed.

The utility model relates to the technical field of temporary box-type transformer substations, in particular to a shock-absorbing protective box-type transformer substation for construction, which comprises a main body and a base, the base is fixed on a foundation supporting surface and provides support for the main body, and a shock-absorbing connecting assembly is arranged between the main body and the base and comprises an upper support, a lower support and a lower support, the upper support is provided with a through hole with a through lower end; the lower support is fixed to the face, facing the body, of the base, and one end of the lower support extends into the through hole. One end of the shock absorber is fixed on the outer surface of the lower support, and the other end of the shock absorber is fixed on the inner wall of the upper support. According to the invention, the damping connection assembly is arranged between the bases, and under the cooperation of the upper support, the damper and the lower support, when the box transformer receives internal or external vibration, the vibration energy is absorbed or dissipated by the damper, the vibration transmitted to the basic supporting surface is reduced, the rigid collision between the main body and the bases is avoided, and the operation in the main body is more stable.

Provided is a relay station system for a long-distance submarine superconducting cable, which relates to the field of relay stations. The relay station system is used for a submarine superconducting cable. The submarine cable housing is partially stripped, creating three transmission segments. The relay station system includes a shaft-type operation and maintenance platform, a refrigeration station, and a coolant circulation device. The coolant circulation device includes an inflow cooling pipe, an outflow cooling pipe, two refrigerant storage tanks, and two intermediate cooling pipes. The refrigeration station is in the second refrigerant storage tank. Refrigerant from the first transmission segment and storage tank enters the second tank, cools, and moves to the third segment and first tank. This application addresses refrigeration and relay issues for long-distance submarine superconducting cables, facilitating operation and maintenance, including for seabed-laid cables and other relay signal devices, while reducing overall maintenance costs.

The utility model provides a compact double-layer prefabricated substation, which comprises a box body, a transformer, a high-voltage cabinet, a low-voltage cabinet, a high-voltage cable and a low-voltage copper bar, the transformer, the high-voltage cabinet and the low-voltage cabinet are mounted on the inner side of the box body, the high-voltage cable and the low-voltage copper bar are electrically connected with the transformer, and a first ceramic seat and a second ceramic seat are sleeved on the inner side of the box body. According to the compact double-layer prefabricated substation, the first copper bar and the second copper bar are matched, so that the high-voltage cable and the low-voltage copper bar can be electrically connected with the first copper bar and the second copper bar through the second copper bolt and the first copper bolt respectively; meanwhile, through the third copper bar, the high-voltage cabinet and the low-voltage cabinet can be electrically connected with the first copper bar and the second copper bar through the first copper bolts respectively, and through the adoption of the structure, circuits between the upper layer and the lower layer can be independently connected through the first copper bar and the second copper bar respectively; and circuit connection among the transformer, the high-voltage cabinet and the low-voltage cabinet does not influence each other, so that the high-voltage cabinet and the low-voltage cabinet can be assembled conveniently.

The utility model discloses a shield tunneling machine box transformer substation with a fire extinguishing system at the top, which comprises a box body, and a low-voltage chamber, a transformer chamber and a high-voltage chamber are arranged in the box body side by side along the horizontal direction; the fixed cross beam is mounted at the top of the box body; the movable cross beam is connected with the fixed cross beam; modulus holes are formed in the fixed cross beam and the movable cross beam; the fire-fighting pipeline is fixed on the fixed cross beam and the movable cross beam, the fire-fighting pipeline comprises a fire detection tube and a release tube, the fire detection tube and the release tube are arranged in the low-voltage chamber, the transformer chamber and the high-voltage chamber, the fire detection tube is used for smoke sensing and heat sensing detection, and the release tube is used for releasing a fire extinguishing agent. According to the utility model, flexible arrangement of the fire-fighting pipeline at the top of the box transformer substation is realized, key protection areas of the low-voltage chamber, the transformer chamber and the high-voltage chamber are covered, the fire detection tube and the release tube are independently arranged, double guarantees of early-stage accurate detection and quick response fire extinguishing of a fire disaster are realized, and 24-hour uninterrupted protection is provided for the box transformer substation.