A prepackaged intelligent box-type substation

Abstract

The application discloses a prepackaged intelligent box-type transformer substation and belongs to the technical field of box-type transformer substations. The device comprises a box body, a high-voltage cabinet, a transformer and a low-voltage cabinet. The box body is divided into a high-voltage chamber, a transformer chamber and a low-voltage chamber by a partition. Auxiliary fire-extinguishing louvers are embedded and installed on the high-voltage chamber, the transformer chamber, the low-voltage chamber and the partition. The auxiliary fire-extinguishing louvers comprise a window frame and rotating blades. The rotating blades are closed by rotation to close the auxiliary fire-extinguishing louvers, so that a closed cavity is formed in the box body. The box body is divided into the high-voltage chamber, the transformer chamber and the low-voltage chamber by the partition. Auxiliary fire-extinguishing louvers composed of a window frame and rotating blades are embedded and installed on the high-voltage chamber, the transformer chamber, the low-voltage chamber and the partition. The rotating blades are closed by rotation to form a relatively sealed space in the box body, so that the inflow of oxygen into the box body is reduced, and automatic fire extinguishing of a fire point in the box body is realized.

Description

Technical Field

[0001] This invention relates to the technical field of prefabricated substations, specifically a prefabricated intelligent prefabricated substation. Background Technology

[0002] A prefabricated substation (abbreviated as box substation, or prefabricated substation in national standard) is, simply put, a complete small substation set assembled in a large metal box in the factory, transported to the site, and after laying a foundation and connecting cables, it can supply power without building a distribution room. It mainly includes a high-voltage room (incoming line), which connects to the 10kV high-voltage cable of the power grid to supply power to the transformer; a transformer room (transformer core), which reduces the 10kV high voltage to 0.4kV low voltage; and a low-voltage room (outgoing line), which is used to distribute 380V power to multiple loads.

[0003] Existing prefabricated substations typically lack automatic fire suppression systems. In high-temperature environments during summer and with aging wiring, prefabricated substations pose a fire hazard, despite existing technologies that include alarm devices.

[0004] However, the aforementioned alarm devices require firefighters to arrive at the scene to extinguish the fire. By the time firefighters arrive, the fire has usually already spread, resulting in the complete destruction of the components inside the prefabricated substation. In severe cases, it can even cause damage to the property and lives of people in the surrounding area. Summary of the Invention

[0005] The purpose of this invention is to provide a prefabricated intelligent box-type substation to solve the problem that existing box-type substations cannot achieve automatic fire extinguishing.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solution: a prefabricated intelligent box-type substation, including a box, a high-voltage cabinet, a transformer, and a low-voltage cabinet. The box is divided into a high-voltage compartment, a transformer compartment, and a low-voltage compartment by a partition. Auxiliary fire-extinguishing louvers are embedded in the high-voltage compartment, the transformer compartment, the low-voltage compartment, and the partition. The auxiliary fire-extinguishing louvers include a window frame and rotating blades. The rotating blades close by rotating to close the auxiliary fire-extinguishing louvers, thereby forming a closed cavity inside the box to prevent oxygen from flowing into the box, thus achieving the purpose of preventing the spread of fire inside the box.

[0007] Preferably, the high-voltage switchgear, transformer, and low-voltage switchgear are respectively installed in the high-voltage room, transformer room, and low-voltage room. A video security system is fixedly installed on the lower side of the enclosure roof. An external environment monitoring system is fixedly installed on the side wall of the enclosure. A transformer three-phase temperature monitor and a transformer oil level monitor are fixedly installed on the transformer. A transformer room temperature and humidity sensor is fixedly installed on the side wall of the transformer room. An exhaust system is fixedly installed on the inner side of the auxiliary fire extinguishing louvers on the side wall of the transformer room. Furthermore, heptafluoropropane fire extinguishing devices are installed inside the high-voltage room, transformer room, and low-voltage room.

[0008] Preferably, the high-voltage cabinet is equipped with an intelligent high-voltage circuit breaker, a high-voltage cabinet intelligent instrument, a high-voltage cabinet touch screen, a partial discharge sensor, and a high-voltage cabinet internal status monitor. A gas monitor and a high-voltage room temperature and humidity sensor are fixedly installed on the side wall of the high-voltage chamber. The low-voltage cabinet is equipped with a low-voltage intelligent circuit breaker, a low-voltage cabinet intelligent instrument, a low-voltage cabinet touch screen, a low-voltage cabinet internal status monitor, and a low-voltage room temperature and humidity sensor.

[0009] Preferably, cabinet doors are installed at the ports of the high-voltage cabinet, high-voltage room, transformer room, and low-voltage room, and sealing strips are fixedly installed on the edges of the cabinet doors. Auxiliary fire extinguishing louvers are embedded in the cabinet doors of the high-voltage cabinet, high-voltage room, transformer room, and low-voltage room.

[0010] Preferably, a primary mounting groove and a secondary mounting groove are respectively provided on both sides of the inner side of the window frame. The edges of the primary mounting groove and the secondary mounting groove are integrally formed with a rotating shaft mounting seat. A rotating shaft limiting seat is fixedly installed on the rotating shaft mounting seat by a positioning component. A rotating hole is provided on both the rotating shaft mounting seat and the rotating shaft limiting seat. The rotating blade includes a rotating shaft, an upper blade, a lower blade, an upper sealing plate, and a lower sealing plate. The rotating shaft, the upper blade, the lower blade, the upper sealing plate, and the lower sealing plate are integrally formed. The rotating shaft is rotatably installed in the rotating hole. The upper blade and the lower blade are respectively located on the upper and lower sides of the rotating shaft. The upper sealing plate is located on the inner end of the upper side of the upper blade, and the lower sealing plate is located on the outer end of the lower side of the lower blade.

[0011] Preferably, a driven gear is fixedly installed at the end of the rotating shaft. The driven gear is located in the primary mounting groove. A sealing plate is fixedly installed at the port of the primary mounting groove. A guide rail is fixedly installed on the inner side wall of the sealing plate. A transmission rack is movably installed on the guide rail. The driven gear meshes with the transmission rack. A force-bearing seat is integrally formed on the side wall of the transmission rack. An electric push rod is fixedly installed on the bottom surface of the primary mounting groove. The telescopic rod of the electric push rod is connected to the force-bearing seat. When the electric push rod is in the return state, the transmission rack is located at the lower end of the guide rail, and at this time, the rotating blade is in an inclined open state. After the electric push rod moves forward, the transmission rack is located at the upper end of the guide rail. When the rotating blade rotates to the vertical state, the upper sealing plate and the lower sealing plate overlap each other.

[0012] Preferably, a primary sealing groove is formed on the side wall of the rotating hole, and a secondary sealing groove is formed at the inner end edge of the rotating shaft mounting seat and the rotating shaft limiting seat. A sealing ring is provided in the primary sealing groove, and a sealing strip is provided in the secondary sealing groove. The sealing ring and the sealing strip are integrally formed. The rotating shaft moves through the sealing ring. A sealing gasket is fitted and connected to the inner side wall of the upper sealing plate and the outer side wall of the lower sealing plate. The sealing ring, sealing strip, sealing gasket, and sealing strip are all made of high-temperature resistant rubber.

[0013] Preferably, a top support mechanism is fixedly installed on the bottom surface of the primary mounting groove. The top support mechanism includes a piston seat, a piston, and a push rod. The piston is movably disposed in the piston chamber on the piston seat. The push rod is fixedly connected to the upper end of the piston. An annular stop is integrally formed on the side wall of the piston chamber. An air inlet is opened on the side wall of the piston chamber. The air inlet is located on the lower side of the annular stop. A gas generator is connected to the air inlet through a primary pipeline. The gas generator is fixed on the inner side wall of the sealing plate. Sodium azide, ignition powder, and oxidant are added to the gas generator. An ignition device is provided inside the gas generator. A magnet is fixedly connected to the end of the electric push rod. The force-bearing seat is cast from ferromagnetic material. The attraction force of the magnet on the force-bearing seat is greater than the total running resistance of the transmission rack.

[0014] Preferably, a primary air passage is provided on the side wall of the piston seat, the upper port of the primary air passage is connected to the piston chamber, and a primary pipe connection port is provided at the lower port of the primary air passage. A clearance groove is provided at the lower ends of the rotating shaft mounting seat and the rotating shaft limiting seat. An annular air groove is provided on the sealing ring, and a straight air groove is provided on the sealing strip. The annular air groove and the straight air groove are connected. A secondary pipe connection port is provided at the lowest position of the straight air groove. The primary pipe connection port and the secondary pipe connection port are connected through a primary connecting pipe. A connecting air passage is provided at the bottom of the window frame, and the pipe connection port on the sealing strip structure on the other side is connected to the primary pipe connection port through the connecting air passage.

[0015] Preferably, a spring groove is provided on the side wall of the piston, and a top support spring and a limiting post are movably arranged in the spring groove. When the piston is lifted, the transmission rack moves to the uppermost end of the guide rail. After the piston is lifted and the top support spring is in the reset state, the limiting post abuts against the upper side of the piston seat.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: 1. This invention establishes a prefabricated intelligent box-type substation consisting of a cabinet, high-voltage switchgear, transformer, and low-voltage switchgear. The cabinet is divided into a high-voltage compartment, a transformer compartment, and a low-voltage compartment by partitions. Auxiliary fire-extinguishing louvers, consisting of window frames and rotating blades, are embedded in the high-voltage compartment, transformer compartment, low-voltage compartment, and partitions. By rotating and closing the blades, the cabinet forms a relatively sealed space, reducing oxygen inflow into the cabinet and thus achieving automatic fire extinguishing at the ignition point inside the cabinet.

[0017] 2. By opening a primary sealing groove on the side wall of the rotating hole, and opening a secondary sealing groove on the inner end edge of the rotating shaft mounting seat and the rotating shaft limiting seat, sealing rings and sealing strips are respectively set in the primary sealing groove and the secondary sealing groove, and sealing gaskets are set on the inner side wall of the upper sealing plate and the outer side wall of the lower sealing plate, the sealing performance after the rotating blade is closed is effectively guaranteed.

[0018] 3. After the top support mechanism is fully lifted, the upper port of the primary air passage is connected to the piston chamber, allowing the gas in the gas generator to flow through the primary air passage into the annular air groove on the sealing ring and the straight air groove on the sealing strip. This causes the sealing ring and sealing strip to expand, thereby further ensuring the sealing effect after the rotating blades are closed. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the auxiliary fire extinguishing louver structure of the present invention; Figure 3 This is a schematic diagram of the window frame structure of the present invention; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a half-sectional view of the auxiliary fire-extinguishing louver of the present invention along the primary mounting groove; Figure 6 for Figure 5 Enlarged schematic diagram of the structure at point B; Figure 7 This is a half-sectional view of the rotating blades of the auxiliary fire-extinguishing louver of the present invention. Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point C; Figure 9 This is a half-sectional view of the top support mechanism of the present invention; Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point D; Figure 11 This is a schematic diagram of the window frame structure of the present invention; Figure 12 for Figure 11 Enlarged schematic diagram of the structure at point E in the middle; Figure 13 This is a schematic diagram of the rotating shaft limiting seat structure of the present invention; Figure 14 for Figure 13 Enlarged schematic diagram of the structure at point F; Figure 15 This is a schematic diagram of the transmission rack structure of the present invention; Figure 16 This is a schematic diagram of the rotating blade structure of the present invention; Figure 17 for Figure 16 Enlarged schematic diagram of the structure at point G in the middle; Figure 18 This is a schematic diagram of the sealing ring and sealing strip structure of the present invention; Figure 19 This is a half-sectional view of the sealing ring and sealing strip of the present invention; Figure 20 for Figure 19 Enlarged schematic diagram of the structure at point H.

[0020] Explanation of reference numerals in the attached figures: Enclosure 1, High-voltage switchgear 2, Transformer 3, Low-voltage switchgear 4, Auxiliary fire extinguishing louvers 5, High-voltage compartment 11, Transformer compartment 12, Low-voltage compartment 13, Partition 14, Video security system 15, External environment monitoring system 16, Intelligent high-voltage circuit breaker 21, Intelligent instrument for high-voltage switchgear 22, High-voltage switchgear touch screen 23, Partial discharge sensor 24, High-voltage switchgear internal status monitor 25, Gas monitor 26, High-voltage room temperature and humidity sensor 27, Transformer oil level monitor 31, Transformer room temperature and humidity sensor 32, Low-voltage intelligent circuit breaker 41, Low-voltage switchgear intelligent instrument 42, Low-voltage switchgear touch screen 43, Low-voltage switchgear internal status monitor 44, Low-voltage room temperature and humidity sensor 45, Window frame 51, Rotating blade 52, Primary mounting slot 53, Secondary mounting slot 54, Rotating blade Shaft mounting seat 55, shaft limiting seat 56, rotating hole 57, rotating shaft 58, upper blade 59, lower blade 60, upper sealing plate 61, lower sealing plate 62, primary sealing groove 63, secondary sealing groove 64, clearance groove 65, sealing ring 66, sealing strip 67, driven gear 68, sealing plate 69, guide rail 70, transmission rack 71, force-bearing seat 72, electric push rod 73, sealing gasket 74, top support mechanism 75, piston seat 76, piston 77, push rod 78, air inlet 79, annular stop seat 80, primary pipeline 81, gas generator 82, primary air passage 83, primary pipeline connection port 84, annular air groove 85, straight air groove 86, secondary pipeline connection port 87, connecting air passage 88, magnet block 89, top support spring 90, limiting post 91. Detailed Implementation

[0021] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0022] Example 1 A prefabricated substation is a complete small substation packaged in a large metal box in the factory, transported to the site, and a foundation is laid. Once the cables are connected, it can be used to supply power. Currently, prefabricated substations typically do not have automatic fire suppression systems. When a fire occurs inside the prefabricated substation, firefighters need to arrive at the scene to extinguish it. By the time firefighters arrive, the fire has usually already spread, causing damage to people and property in the surrounding area.

[0023] It should be emphasized that the core improvement of this embodiment is that by creating a relatively sealed environment inside the box 1 of the box-type substation to isolate external oxygen, the automatic fire extinguishing of the fire point inside the box 1 can be achieved.

[0024] like Figures 1 to 2In this embodiment, the enclosure includes a housing 1, a high-voltage cabinet 2, a transformer 3, and a low-voltage cabinet 4. The housing 1 is divided into a high-voltage chamber 11, a transformer chamber 12, and a low-voltage chamber 13 by a partition 14. Each of the high-voltage chamber 11, the transformer chamber 12, the low-voltage chamber 13, and the partition 14 is equipped with an auxiliary fire-extinguishing louver 5. The auxiliary fire-extinguishing louver 5 includes a window frame 51 and rotating blades 52. Furthermore, each of the high-voltage chamber 11, the transformer chamber 12, and the low-voltage chamber 13 is equipped with a heptafluoropropane fire extinguishing device.

[0025] The working principle of the auxiliary fire extinguishing louver 5: Figures 1-2 This invention establishes a prefabricated intelligent box-type substation consisting of a housing 1, a high-voltage cabinet 2, a transformer 3, and a low-voltage cabinet 4. The housing 1 is divided into a high-voltage chamber 11, a transformer chamber 12, and a low-voltage chamber 13 by a partition 14. An auxiliary fire-extinguishing louver 5, consisting of a window frame 51 and a rotating blade 52, is embedded in the high-voltage chamber 11, the transformer chamber 12, the low-voltage chamber 13, and the partition 14. By rotating and closing the rotating blade 52, the housing 1 forms a relatively sealed space to reduce oxygen inflow into the housing 1. A heptafluoropropane fire extinguishing device is then installed to achieve rapid and automatic fire extinguishing of the ignition point inside the housing 1.

[0026] It should be noted that, such as Figure 1 The high-voltage cabinet 2, transformer 3, and low-voltage cabinet 4 are respectively installed in the high-voltage chamber 11, transformer chamber 12, and low-voltage chamber 13. A video security system 15 is fixedly installed on the lower side of the ceiling of the enclosure 1. An external environment monitoring system 16 is fixedly installed on the side wall of the enclosure 1. A transformer three-phase temperature monitor and a transformer oil level monitor 31 are fixedly installed on the transformer 3. A transformer room temperature and humidity sensor 32 is fixedly installed on the side wall of the transformer chamber 12. An exhaust system is fixedly installed on the inner side of the auxiliary fire extinguishing louver 5 on the side wall of the transformer chamber 12.

[0027] This prefabricated substation also includes a management and control system, which is an integrated intelligent management and control platform for prefabricated substations. It is compatible with all equipment in the high-voltage room, transformer room, and low-voltage room of the prefabricated substation, integrating electrical monitoring, equipment status early warning, remote control of intelligent switches, environmental security monitoring, energy consumption metering, fault alarm handling, and data statistical analysis. This enables unmanned operation, remote visualization, and intelligent operation and maintenance throughout the entire lifecycle of the prefabricated substation. The video security system 15 uses AI intelligent cameras to monitor the exterior of the prefabricated substation in real time. The AI ​​automatically identifies intrusion, equipment fires, and unauthorized opening and damage, and automatically captures images and pushes alarm information to the backend. The external environment monitoring system 16 includes water immersion sensors and access control switch sensors to monitor the external environment of the prefabricated substation. The water immersion sensors can detect water accumulation at the bottom of the enclosure to prevent rainwater from backflowing, soaking equipment, and causing short circuits. The access control switch sensor can detect the opening and closing status of the transformer substation door, and immediately trigger a security alarm if the door is opened illegally. Transformer 3 is used to step down the 10kV high-voltage AC power to 0.4kV civil / industrial low-voltage AC power to achieve voltage level conversion. The transformer three-phase temperature monitor monitors the three-phase temperature of the transformer windings in real time, and provides an over-temperature warning to prevent overheating and burning of the transformer coil insulation. The transformer oil level monitor 31 monitors the transformer oil level and provides timely alarms for oil leakage and oil shortage to avoid insufficient insulating oil leading to heat dissipation failure and insulation damage. The transformer room temperature and humidity sensor 32 is used to monitor the overall temperature and humidity of the transformer room to prevent moisture from corroding the transformer and high temperature from aggravating transformer overload and overheating. The exhaust system is used to exhaust the heat generated by the operation of the transformer and cabinet, and uses forced convection cooling with fans to reduce the indoor temperature and ensure the rated operating temperature of the equipment.

[0028] It should be noted that, such as Figure 1The high-voltage cabinet 2 is equipped with an intelligent high-voltage circuit breaker 21, a high-voltage cabinet intelligent instrument 22, a high-voltage cabinet touch screen 23, a partial discharge sensor 24, and a high-voltage cabinet internal status monitor 25. A gas monitor 26 and a high-voltage room temperature and humidity sensor 27 are fixedly installed on the side wall of the high-voltage chamber 11. The high-voltage cabinet 2 houses 10kV high-voltage primary and secondary components, enabling high-voltage power distribution, switching, and isolation. The intelligent high-voltage circuit breaker 21 features remote opening and closing, and fault instantaneous trip protection; it automatically trips in case of short circuit or overload to isolate faulty high-voltage power sources. The high-voltage cabinet intelligent instrument 22 collects electrical parameters such as voltage, current, power, power factor, and energy on the high-voltage side in real time, and has local display and remote upload functions. The high-voltage cabinet touch screen 23 is a human-machine interface terminal. The system allows for local viewing of all station operation data and equipment status, as well as local operation of circuit breaker opening and closing, setting of equipment parameters, and retrieval of alarm records. Partial discharge sensor 24 monitors for insulation aging and discharge hazards inside the high-voltage cabinet, providing early warnings of insulation breakdown, short circuits, and explosion risks. High-voltage cabinet internal status monitor 25 uses infrared thermography to monitor for overheating hazards in high-voltage contacts and busbars, while a visible light camera monitors the external condition of equipment inside the cabinet in real time and uploads any abnormalities to the backend. Gas monitor 26 detects SF6 gas concentration in real time to prevent leakage and reduced insulation capacity, ensuring both equipment and personnel safety. High-voltage room temperature and humidity sensor 27 monitors the temperature and humidity inside the high-voltage cabinet to prevent condensation-induced short circuits caused by dampness, and also prevents high temperatures from accelerating insulation aging, while simultaneously linking with ventilation and dehumidification equipment.

[0029] The low-voltage cabinet 4 is internally equipped with a low-voltage intelligent circuit breaker 41, a low-voltage cabinet intelligent instrument 42, a low-voltage cabinet touch screen 43, a low-voltage cabinet internal status monitor 44, and a low-voltage room temperature and humidity sensor 45. The low-voltage cabinet 4 is the core cabinet on the low-voltage side, receiving 0.4kV power from the transformer and completing low-voltage power distribution, output, and protection. The low-voltage intelligent circuit breaker 41 is the disconnecting switch for each low-voltage branch, supporting remote opening and closing, electronic tripping, and possessing anti-islanding protection (for photovoltaic grid-connected scenarios), overload / short circuit / leakage protection, and automatic tripping to disconnect the branch power supply in case of fault. The low-voltage cabinet intelligent instrument 42 collects low-voltage data in real time. Electrical parameters such as voltage, current, power, power factor, and energy on the low-voltage side are displayed locally and uploaded remotely. The low-voltage switchgear touch screen 43 has the same functions as the high-voltage switchgear touch screen 23, allowing local viewing of low-voltage side operating parameters and alarms, and local operation of low-voltage switches. The low-voltage switchgear internal status monitor 44 monitors the heating of low-voltage busbars and switch contacts through infrared temperature measurement, and provides remote alarms for heating of equipment, abnormal noise, and foreign object intrusion through visible light monitoring. The low-voltage room temperature and humidity sensor 45 monitors the temperature and humidity inside the low-voltage switchgear to prevent condensation short circuits and corrosion of metal contacts caused by moisture, and also links with ventilation and dehumidification equipment.

[0030] It should be noted that, such as Figure 1The high-voltage cabinet 2, high-voltage chamber 11, transformer chamber 12, and low-voltage chamber 13 are all equipped with cabinet doors at their ports, and sealing strips are fixedly installed on the edges of the cabinet doors. Auxiliary fire extinguishing louvers 5 are embedded in the cabinet doors of the high-voltage cabinet 2, high-voltage chamber 11, transformer chamber 12, and low-voltage chamber 13. By setting sealing strips on the edges of the cabinet doors, the relative airtightness of the interior of the enclosure 1 is further guaranteed.

[0031] Example 2 It is understandable that in Embodiment 1, by creating a relatively sealed environment inside the box 1 of the prefabricated substation to isolate external oxygen, the automatic extinguishing of the fire point inside the box 1 can be achieved. However, when the rotating blade 52 rotates and closes, the sealing at its junction is limited, which means that the fire point inside the box 1 can only be suppressed and may not be completely extinguished.

[0032] It should be emphasized that the core improvement of this embodiment lies in: by setting a sealing structure, the sealing performance after the rotating blade 52 is closed is improved, thereby improving the automatic fire extinguishing effect inside the box 1.

[0033] like Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figures 11-18To solve the above problems, a primary mounting groove 53 and a secondary mounting groove 54 are respectively provided on both sides of the inner side of the window frame 51. A pivot mounting seat 55 is integrally formed on the edge of both the primary mounting groove 53 and the secondary mounting groove 54. A pivot limiting seat 56 is fixedly installed on the pivot mounting seat 55 by a positioning component. Both the pivot mounting seat 55 and the pivot limiting seat 56 have rotating holes 57. The rotating blade 52 includes a pivot 58, an upper blade 59, a lower blade 60, an upper sealing plate 61, and a lower sealing plate 62. The pivot 58, upper blade 59, lower blade 60, upper sealing plate 61, and lower sealing plate 62 are connected... The rotating shaft 58 is integrally formed and rotatably installed in the rotating hole 57. The upper blade 59 and the lower blade 60 are respectively located on the upper and lower sides of the rotating shaft 58. The upper sealing plate 61 is located on the inner end of the upper side of the upper blade 59, and the lower sealing plate 62 is located on the outer end of the lower side of the lower blade 60. A driven gear 68 is fixedly installed at the end of the rotating shaft 58. The driven gear 68 is located in the first-stage mounting groove 53. A sealing plate 69 is fixedly installed at the port of the first-stage mounting groove 53. A guide rail 70 is fixedly installed on the inner wall of the sealing plate 69, and a transmission rack 7 is movably arranged on the guide rail 70. 1. The driven gear 68 meshes with the transmission rack 71. A force-bearing seat 72 is integrally formed on the side wall of the transmission rack 71. An electric push rod 73 is fixedly installed on the bottom surface of the first-stage mounting groove 53. The telescopic rod of the electric push rod 73 is connected to the force-bearing seat 72. When the electric push rod 73 is in the return state, the transmission rack 71 is located at the lower end of the guide rail 70, and at this time, the rotating blade 52 is in an inclined open state. After the electric push rod 73 moves forward, the transmission rack 71 is located at the upper end of the guide rail 70. When the rotating blade 52 rotates to the vertical state, the upper sealing plate 61 and the lower sealing plate 62 are in a vertical position. The plates 62 are stacked together. A primary sealing groove 63 is provided on the side wall of the rotating hole 57. A secondary sealing groove 64 is provided at the inner end edge of the rotating shaft mounting seat 55 and the rotating shaft limiting seat 56. A sealing ring 66 is provided in the primary sealing groove 63, and a sealing strip 67 is provided in the secondary sealing groove 64. The sealing ring 66 and the sealing strip 67 are integrally formed. The rotating shaft 58 moves through the sealing ring 66. The inner side wall of the upper sealing plate 61 and the outer side wall of the lower sealing plate 62 are both fitted with sealing gaskets 74. The sealing ring 66, sealing strip 67, sealing gasket 74, and sealing strip are all made of high-temperature resistant rubber.

[0034] The working principle of the sealing structure: such as Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figures 11-18By opening a primary sealing groove 63 on the side wall of the rotating hole 57, and opening a secondary sealing groove 64 on the inner end edge of the rotating shaft mounting seat 55 and the rotating shaft limiting seat 56, and setting a sealing ring 66 and a sealing strip 67 in the primary sealing groove 63 and the secondary sealing groove 64 respectively, and setting a sealing pad 74 on the inner side wall of the upper sealing plate 61 and the outer side wall of the lower sealing plate 62, the sealing performance of the rotating blade 52 after closing is effectively guaranteed.

[0035] It should be noted that, such as Figure 6 and Figure 9 A top support mechanism 75 is fixedly installed on the bottom surface of the primary mounting groove 53. The top support mechanism 75 includes a piston seat 76, a piston 77, and a push rod 78. The piston 77 is movably disposed in the piston chamber on the piston seat 76. The push rod 78 is fixedly connected to the upper end of the piston 77. An annular stop seat 80 is integrally formed on the side wall of the piston chamber. An air inlet 79 is provided on the side wall of the piston chamber. The air inlet 79 is located on the lower side of the annular stop seat 80. A gas generator 82 is connected to the air inlet 79 through a primary pipe 81. The gas generator 82 is fixed on the inner side wall of the sealing plate 69. Sodium azide, ignition powder, and oxidizer are added to the gas generator 82, and an ignition device is provided inside the gas generator 82. A magnet block 89 is fixedly connected to the end of the electric push rod 73. The force-bearing seat 72 is composed of... Made of ferromagnetic material, the magnetic block 89 has an attraction force on the force-bearing seat 72 that is greater than the total running resistance of the transmission rack 71. By setting up a support mechanism 75 composed of a piston seat 76, a piston 77, and a push rod 78, and by setting up a gas generator 82 to supply gas to the support mechanism 75, the support mechanism 75 can lift the force-bearing seat 72, thereby preventing the electric push rod 73 from failing at high temperatures and causing the rotating blade 52 to fail to close properly. A magnetic block 89 is fixedly connected to the end of the electric push rod 73, and the force-bearing seat 72 is made of ferromagnetic material. Thus, during the rainy season, the electric push rod 73 can push the force-bearing seat 72, thereby driving the transmission rack 71 to move upward and closing the transmission rack 71. This prevents rainwater from entering the box 1 through the auxiliary fire extinguishing louver 5 during windy and rainy weather and damaging the electrical components inside the box 1.

[0036] Example 3 It is understandable that in Embodiment 2, by setting the sealing ring 66, sealing strip 67 and sealing gasket 74, the sealing performance of the rotating blade 52 after closing is effectively guaranteed. However, the elasticity of rubber is limited, and if the rubber is set too tightly, it may cause interference when the rotating blade 52 is closed, thereby affecting the closing effect of the rotating blade 52. If it is set too loosely, it will affect the sealing effect of the rotating blade 52 after closing.

[0037] It should be emphasized that the core improvement of this embodiment is that by closing first and then allowing the sealing ring 66 and sealing strip 67 to expand, the sealing performance at the closing point of the rotating blade 52 can be guaranteed while avoiding interference.

[0038] like Figures 4-6 and Figure 9 and Figures 18-20 To address the aforementioned issues, a primary air passage 83 is provided on the side wall of the piston seat 76. The upper port of the primary air passage 83 is connected to the piston chamber, and a primary pipe connection port 84 is provided at the lower port of the primary air passage 83. A clearance groove 65 is provided at the lower ends of both the rotating shaft mounting seat 55 and the rotating shaft limiting seat 56. An annular air groove 85 is provided on the sealing ring 66, and a straight air groove 86 is provided on the sealing strip 67. The annular air groove 85 and the straight air groove 86 are interconnected. A secondary pipe connection port 87 is provided at the lowest position of the straight air groove 86. The primary pipe connection port 84 and the secondary pipe connection port 87 are connected via a primary connecting pipe. A connecting air passage 88 is provided at the bottom of the window frame 51, and the pipe connection port on the other side of the sealing strip structure is connected to the primary pipe connection port 84 via the connecting air passage 88.

[0039] The working principle of sealing ring 66 and sealing strip 67: as follows Figures 4-6 and Figure 9 and Figures 18-20 After the top support mechanism 75 is fully lifted, the upper port of the first-stage air passage 83 is connected to the piston chamber, so that the gas in the gas generator 82 flows through the first-stage air passage 83 to the annular air groove 85 on the sealing ring 66 and the straight air groove 86 on the sealing strip 67, thereby causing the sealing ring 66 and the sealing strip 67 to expand, thereby further ensuring the sealing effect after the rotating blade 52 is closed.

[0040] It should be noted that, such as Figure 10 The piston 77 has a spring groove on its side wall, in which a top support spring 90 and a limiting post 91 are movably disposed. When the piston 77 is lifted, the transmission rack 71 moves to the uppermost end of the guide rail 70. After the piston 77 is lifted and the top support spring 90 is in the reset state, the limiting post 91 abuts against the upper side of the piston seat 76, forming a locking action through the limiting post 91, thereby ensuring the stability of the rotating blade 52 after it is closed.

[0041] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of this application as claimed.

Claims

1. A prefabricated intelligent box-type substation, comprising a box (1), a high-voltage switchgear (2), a transformer (3), and a low-voltage switchgear (4), wherein the box (1) is divided into a high-voltage compartment (11), a transformer compartment (12), and a low-voltage compartment (13) by a partition (14), characterized in that, Auxiliary fire extinguishing louvers (5) are embedded in the high-voltage chamber (11), transformer chamber (12), low-voltage chamber (13), and partition (14). The auxiliary fire extinguishing louvers (5) include a window frame (51) and rotating blades (52). The rotating blades (52) close by rotating to close the auxiliary fire extinguishing louvers (5), thereby forming a closed cavity inside the box (1).

2. The prefabricated intelligent box-type substation as described in claim 1, characterized in that, The high-voltage cabinet (2), transformer (3), and low-voltage cabinet (4) are respectively installed in the high-voltage room (11), transformer room (12), and low-voltage room (13). A video security system (15) is fixedly installed on the lower side of the ceiling of the enclosure (1). An external environment monitoring system (16) is fixedly installed on the side wall of the enclosure (1). A transformer three-phase temperature monitor and a transformer oil level monitor (31) are fixedly installed on the transformer (3). A transformer room temperature and humidity sensor (32) is fixedly installed on the side wall of the transformer room (12). An exhaust system is fixedly installed on the inner side of the auxiliary fire extinguishing louver (5) on the side wall of the transformer room (12). A heptafluoropropane fire extinguishing device is installed inside the high-voltage room (11), transformer room (12), and low-voltage room (13).

3. A prefabricated intelligent box-type substation as described in claim 2, characterized in that, The high-voltage cabinet (2) is equipped with an intelligent high-voltage circuit breaker (21), a high-voltage cabinet intelligent instrument (22), a high-voltage cabinet touch screen (23), a partial discharge sensor (24), and a high-voltage cabinet internal status monitor (25). The high-voltage chamber (11) is fixedly installed with a gas monitor (26) and a high-voltage room temperature and humidity sensor (27). The low-voltage cabinet (4) is equipped with a low-voltage intelligent circuit breaker (41), a low-voltage cabinet intelligent instrument (42), a low-voltage cabinet touch screen (43), a low-voltage cabinet internal status monitor (44), and a low-voltage room temperature and humidity sensor (45).

4. A prefabricated intelligent box-type substation as described in claim 1, characterized in that, The high-voltage cabinet (2), high-voltage chamber (11), transformer chamber (12), and low-voltage chamber (13) are all equipped with cabinet doors at their ports, and the edges of the cabinet doors are all fixedly equipped with sealing strips. The cabinet doors of the high-voltage cabinet (2), high-voltage chamber (11), transformer chamber (12), and low-voltage chamber (13) are all equipped with auxiliary fire-extinguishing louvers (5).

5. A prefabricated intelligent box-type substation as described in claim 4, characterized in that, The inner sides of the window frame (51) are respectively provided with a primary mounting groove (53) and a secondary mounting groove (54). The edges of the primary mounting groove (53) and the secondary mounting groove (54) are integrally formed with a rotating shaft mounting seat (55). A rotating shaft limiting seat (56) is fixedly installed on the rotating shaft mounting seat (55) by a positioning component. Both the rotating shaft mounting seat (55) and the rotating shaft limiting seat (56) are provided with rotating holes (57). The rotating blade (52) includes a rotating shaft (58), an upper blade (59), a lower blade (60), and an upper sealing plate (59). 61) and lower sealing plate (62), the rotating shaft (58), upper blade (59), lower blade (60), upper sealing plate (61) and lower sealing plate (62) are integrally formed, the rotating shaft (58) is rotatably installed in the rotating hole (57), the upper blade (59) and lower blade (60) are respectively located on the upper and lower sides of the rotating shaft (58), the upper sealing plate (61) is located on the inner side of the upper side of the upper blade (59), and the lower sealing plate (62) is located on the outer side of the lower side of the lower blade (60).

6. A prefabricated intelligent box-type substation as described in claim 5, characterized in that, A driven gear (68) is fixedly installed at the end of the rotating shaft (58). The driven gear (68) is located in the primary mounting groove (53). A sealing plate (69) is fixedly installed at the port of the primary mounting groove (53). A guide rail (70) is fixedly installed on the inner side wall of the sealing plate (69). A transmission rack (71) is movably arranged on the guide rail (70). The driven gear (68) meshes with the transmission rack (71). A force-bearing seat (72) is integrally formed on the side wall of the transmission rack (71). The bottom of the primary mounting groove (53) An electric push rod (73) is fixedly installed on the surface. The telescopic rod of the electric push rod (73) is connected to the force seat (72). When the electric push rod (73) is in the return state, the transmission rack (71) is located at the lower end of the guide rail (70), and at this time, the rotating blade (52) is in the tilted open state. After the electric push rod (73) moves forward, the transmission rack (71) is located at the upper end of the guide rail (70). When the rotating blade (52) rotates to the vertical state, the upper sealing plate (61) and the lower sealing plate (62) overlap each other.

7. A prefabricated intelligent box-type substation as described in claim 6, characterized in that, A primary sealing groove (63) is provided on the side wall of the rotating hole (57). A secondary sealing groove (64) is provided at the inner end edge of the rotating shaft mounting seat (55) and the rotating shaft limiting seat (56). A sealing ring (66) is provided in the primary sealing groove (63), and a sealing strip (67) is provided in the secondary sealing groove (64). The sealing ring (66) and the sealing strip (67) are integrally formed. The rotating shaft (58) moves through the sealing ring (66). The inner side wall of the upper sealing plate (61) and the outer side wall of the lower sealing plate (62) are both fitted with sealing gaskets (74). The sealing ring (66), the sealing strip (67), the sealing gasket (74), and the sealing strip are all made of high-temperature resistant rubber.

8. A prefabricated intelligent box-type substation as described in claim 7, characterized in that, A top support mechanism (75) is fixedly installed on the bottom surface of the primary mounting groove (53). The top support mechanism (75) includes a piston seat (76), a piston (77), and a push rod (78). The piston (77) is movably disposed in the piston chamber on the piston seat (76). The push rod (78) is fixedly connected to the upper end of the piston (77). An annular stop (80) is integrally formed on the side wall of the piston chamber. An air inlet (79) is opened on the side wall of the piston chamber. The air inlet (79) is located on the lower side of the annular stop (80). A gas generator (82) is connected to the opening (79) via a primary pipe (81). The gas generator (82) is fixed on the inner wall of the sealing plate (69). Sodium azide, ignition powder, and oxidant are added to the gas generator (82). An ignition device is installed inside the gas generator (82). A magnet block (89) is fixedly connected to the end of the electric push rod (73). The force seat (72) is made of ferromagnetic material. The attraction force of the magnet block (89) on the force seat (72) is greater than the total running resistance of the transmission rack (71).

9. A prefabricated intelligent box-type substation as described in claim 8, characterized in that, The piston seat (76) has a primary air passage (83) on its side wall. The upper port of the primary air passage (83) is connected to the piston chamber. A primary pipe connection port (84) is provided at the lower port of the primary air passage (83). The lower ends of the rotating shaft mounting seat (55) and the rotating shaft limiting seat (56) are provided with clearance grooves (65). The sealing ring (66) has an annular air groove (85). The sealing strip (67) has a straight air groove (86). The annular air groove (85) and the straight air groove (86) are connected. A secondary pipe connection port (87) is provided at the lowest position of the straight air groove (86). The primary pipe connection port (84) and the secondary pipe connection port (87) are connected through a primary connecting pipe. A connecting air passage (88) is provided at the bottom of the window frame (51). The pipe connection port on the other side of the sealing strip structure is connected to the primary pipe connection port (84) through the connecting air passage (88).

10. A prefabricated intelligent box-type substation as described in claim 9, characterized in that, A spring groove is provided on the side wall of the piston (77), and a top support spring (90) and a limiting post (91) are movably arranged in the spring groove. When the piston (77) is lifted, the transmission rack (71) moves to the uppermost end of the guide rail (70). After the piston (77) is lifted and the top support spring (90) is in the reset state, the limiting post (91) abuts against the upper side of the piston seat (76).

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