Fireproof electrical ring main unit and assembling method thereof

Abstract

The invention discloses a fireproof electrical ring main unit and an assembly method thereof, and particularly relates to the technical field of electrical ring main units, and the fireproof electrical ring main unit comprises a ring main unit body. The fixed-point spraying mechanism is installed on the back of the cabinet chamber, the fixed-point spraying mechanism is composed of the transverse moving assembly, the spraying pipe assembly and other structures, the channel facing the spraying pipe assembly is formed in the back of the cabinet chamber, and the blocking mechanism is arranged at the position of the channel to guarantee closing of the cabinet chamber; the spraying pipe assembly enters the cabinet chamber and is unfolded, the spraying range of a fire extinguishing agent can be greatly expanded, it is guaranteed that high-temperature or on-fire electrical elements in the cabinet chamber can be effectively restrained, timely fire extinguishing treatment at the high-temperature fire source position can be efficiently and accurately achieved in the working mode of fixed-point operation, the fire extinguishing efficiency is greatly improved, pertinence is high, and the fire extinguishing effect is good. And a large amount of waste of the stored fire extinguishing agent is effectively avoided, follow-up continuous fire extinguishing treatment can be guaranteed, and then the fireproof effect is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electrical ring main unit, and in particular to a fireproof electrical ring main unit and an assembly method thereof. Background Art

[0002] The electrical ring main unit is a group of electrical transmission and distribution equipment (high-voltage switchgear) installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. Its core part uses load switches and fuses, which have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, large public buildings, factories and enterprises and other load centers.

[0003] At present, in order to prevent fires caused by overheating or electrical short circuits inside electrical ring network cabinets during use, fire protection is often required. Existing fireproof electrical ring network cabinets are mostly equipped with fire extinguishers on the installation cabinets. When a fire occurs in the installation cabinet, the fire extinguishing agent in the fire extinguisher is sprayed into the installation cabinet through a pipeline, thereby achieving fire prevention. For example, a Chinese patent with patent number "CN113964667A" discloses "an electrical ring network cabinet with a built-in fireproof and explosion-proof structure and its assembly method". The device installs a fire extinguisher bottle on the top of the ring network cabinet. When the temperature inside the ring network cabinet is detected to be abnormal, the solenoid valve on the fire extinguisher bottle is opened. , so that the material in the fire extinguisher bottle is sprayed into the ring network cabinet, so that the ring network cabinet is extinguished. However, since there are usually multiple cabinet chambers arranged in the cabinet, and the switch devices are packaged in each cabinet chamber, and in the process of operation, it is often the component in a cabinet chamber that is overloaded and causes high temperature or short circuit to cause a fire source, which in turn causes a series of fires. The fire extinguishing agent sprayed into the cabinet is often sprayed on each cabinet chamber on a large scale. It is not only difficult to accurately deal with the high-temperature fire source in a timely manner, but also has poor pertinence and delays the fire extinguishing efficiency. In addition, it is easy to waste a large amount of stored fire extinguishing agent in the early stage. Once the fire expands, it may affect the subsequent continuous fire extinguishing treatment, resulting in poor fire prevention effect. Summary of the invention

[0004] The object of the present invention is to provide a fireproof electrical ring main unit to solve the above-mentioned deficiencies in the technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a fireproof electrical ring main unit and an assembly method thereof, comprising: A ring main unit body, wherein the side wall of the ring main unit body is provided with a cabinet door, and a plurality of cabinet chambers are provided inside the ring main unit body; A fireproof box, which is arranged on one side of the ring main unit body, and a liftable card seat is arranged at the inner bottom of the fireproof box, a fire extinguishing tank is installed on the top of the card seat, and a connecting pipe is connected to the top of the fire extinguishing tank, and a solenoid valve is arranged on the connecting pipe; A pipe assembly, the pipe assembly includes a fixed pipe installed on one side of the top of the ring network cabinet body near the top of the fireproof box, one end of the fixed pipe extending to the inside of the fireproof box is connected to the connecting pipe, and one end of the fixed pipe extending to the inside of the ring network cabinet body is provided with a U-shaped pipe near the top of the cabinet chamber, the U-shaped pipe is fixedly connected to the ring network cabinet body through a clamp, and a plurality of nozzles are connected to the bottom side of the U-shaped pipe, and a first control valve is provided at one end of the fixed pipe near the U-shaped pipe; A fixed-point spraying mechanism, the fixed-point spraying mechanism comprises a delivery pipeline arranged at one end of a fixed pipeline close to one side of a U-shaped pipeline, a second control valve is arranged at one end of the delivery pipeline close to the fixed pipeline, and a delivery hose is installed at the other end of the delivery pipeline, an adjustable nozzle assembly is connected to the bottom end of the delivery hose, and a transverse movement assembly is installed on the back of the ring main unit body, and the transverse movement assembly is used to drive the nozzle assembly to move transversely; The backs of the plurality of cabinets are each provided with a passage toward the nozzle assembly, and a blocking mechanism is provided on the passage.

[0006] Preferably, a hydraulic cylinder is installed at the inner bottom end of the fireproof box, the top end of the hydraulic cylinder is connected to the card seat, the top end of the card seat is provided with a groove, and the bottom end of the fire extinguisher can be plugged into the groove; A fire detector is installed on the top side of the ring network cabinet body, an optical fiber temperature sensor is installed on the side wall of the U-shaped pipe through a clamp, and a built-in temperature sensor is arranged inside the cabinet chamber.

[0007] Preferably, a connecting tube is provided with a connecting disk at the top end, a fixing disk facing the connecting disk is fixed at the bottom end of the fixed pipe, and a movable ring and a positioning ring are symmetrically sleeved on the upper and lower sides of the fixed plate at the bottom end of the fixed pipe, connecting rods are symmetrically passed through the two ends of the fixed plate, the two ends of the connecting rod are respectively fixedly connected to the movable ring and the positioning ring, and a second spring is provided on the outer wall of the connecting rod between the movable ring and the fixed plate, guide frames are symmetrically connected to the two sides of the fixed plate, and connecting handles are sleeved on the two guide frames, a support rod is rotatably connected between the top end of the connecting handle and the movable ring via a rotating shaft, and a clamping ring facing the fixed plate and the positioning ring is fixed on the inner side of the connecting handle, a silicone pad is provided on the inner side of the clamping ring, and the end of the fixed pipe close to the fixed disk can be plugged into the connecting tube.

[0008] Preferably, a first clamping ring is provided on the top side of the connecting disk, a second clamping ring is provided on the bottom side of the fixing disk, annular clamping grooves are provided on both sides of the positioning ring, and the first clamping ring and the second clamping ring are respectively clamped in the two annular clamping grooves.

[0009] Preferably, the transverse movement assembly includes an opening formed on the back of the ring network cabinet body, a fixing frame is installed on the outer end of the opening, fixing plates are symmetrically connected to the two sides of the fixing frame, and the fixing plates are fixedly connected to the ring network cabinet body by bolts, a threaded rod is rotatably connected to the interior of the fixing frame through a bearing, a movable column is connected to the outer wall of the threaded rod by a threaded engagement, a convex strip is provided on the side wall of the movable column, and a sliding groove matching the convex strip is provided on the inner side of the fixing frame, a driving motor is fixed to one end of the fixing frame, and the output end of the driving motor is connected to the threaded rod.

[0010] Preferably, the nozzle assembly includes a cylinder fixedly connected to the side wall of the movable column by bolts, the output end of the cylinder is connected to the central cylinder, both ends of the delivery hose are connected to the central cylinder and the delivery pipeline by threaded joints, a boss is provided on one side of the central cylinder, a driving motor is installed in the boss, the output end of the driving motor extends outside the boss and is connected to a screw rod, and a collision frame facing the channel is fixed on one side of the central cylinder and outside the screw rod; The side wall of the central rotating cylinder is located between the central rotating cylinder and the collision frame, and a plurality of nozzles are provided through a rotating shaft circular array, and a corrugated telescopic tube is connected between the nozzle and the central rotating cylinder, and a movable block is connected to the outer wall of the screw rod through a thread, and a connecting arm is rotatably connected between the movable block and the plurality of nozzles through a rotating shaft.

[0011] Preferably, the blocking mechanism includes a support ring fixedly connected to the inner side of the cabinet toward the channel by bolts, a blocking block is installed inside the support ring, one end of the blocking block is plugged into the channel, and the other end of the blocking block is provided with a plurality of L-shaped plates in a circular array, a first spring is fixed between the end of the L-shaped plate and the support ring, and a limiting rod is connected through the first spring and the L-shaped plate, and one end of the limiting rod is fixedly connected to the support ring.

[0012] Preferably, the pipeline assembly also includes a branch pipe arranged at one end of the fixed pipeline near the top of the fireproof box, an air pump is installed on the top of the fireproof box, a third control valve is installed at one end of the branch pipe, and the other end of the branch pipe is connected to the air pump, and the side wall of the cabinet door is provided with multiple groups of heat dissipation grooves.

[0013] Preferably, a plurality of arc-shaped baffles facing the heat dissipation slots are arranged on the outer side of the cabinet door, and protective plates are arranged on the top of the ring network cabinet body and the fireproof box.

[0014] A method for assembling a fireproof electrical ring main unit comprises the following steps: S1. Connect the fixing frame to the opening through the fixing plate and bolts, and then install the transverse movement assembly on the back of the ring main unit; S2. The nozzle assembly is installed on the movable column on the transverse assembly by bolts, and then the delivery hose is installed between the transfer cylinder and the delivery pipeline by using a threaded joint, so that the fixed-point injection mechanism can be assembled in the ring main unit; S3. The support ring is fixedly connected to the channel inside the cabinet by bolts, so that the blocking block on the support ring is inserted into the channel, so that the blocking mechanism can be installed at the channel to ensure the sealing of the cabinet; S4. Open the fireproof box and embed the fire extinguisher tank on the base. Drive the base up through the hydraulic cylinder, so that the base drives the fire extinguisher tank to rise, and then the bottom end of the fixed pipe is plugged into the connecting pipe. At the same time, the connecting plate and the fixed plate are tightly clamped on both sides of the positioning ring, and the two clamping rings can drive the silicone pad to clamp and wrap between the outside of the connecting plate and the fixed plate, thereby ensuring the tightness and sealing of the fire extinguisher tank and the fixed pipe for safe use.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are: 1. By installing a fixed-point spraying mechanism on the back of the cabinet, the fixed-point spraying mechanism is composed of a transverse movement component and a nozzle component and other structures, and by setting a channel facing the nozzle component on the back of the cabinet, a blocking mechanism is provided at the channel to ensure the closure of the cabinet. When the temperature in a cabinet is abnormal, the first control valve is closed and the second control valve is opened. The transverse movement component can move the nozzle component to the channel of the abnormal cabinet, and then the collision frame on the nozzle component opens the blocking block and allows each group of nozzles to enter the cabinet through the channel. Subsequently, multiple groups of nozzles can be controlled to be umbrella-shaped and open outward at the same time, and then the solenoid valve is opened to allow the fire extinguishing agent in the fire extinguishing tank to be rushed into the transfer cylinder through the fixed pipeline and the delivery hose, and sprayed out from the nozzle by the corrugated telescopic pipe. The opened groups of nozzles can greatly expand the spraying range of the fire extinguishing agent, thereby ensuring that the high temperature or burning electrical components in the cabinet can be effectively suppressed; Under this fixed-point operation working mode, timely fire extinguishing at the location of high-temperature fire sources can be achieved efficiently and accurately, which not only greatly improves the fire extinguishing efficiency, but also has strong pertinence, effectively avoiding a large amount of waste of stored fire extinguishing agents, and can ensure subsequent continuous fire extinguishing treatment, thereby greatly improving the fire prevention effect.

[0016] 2. When a large area of ​​fire is detected inside the ring main unit, the first control valve and the second control valve can be opened at the same time to switch to the full working mode. Even if the fire extinguishing agent in the fire extinguishing tank is respectively rushed into the U-shaped pipe and the delivery pipe, both of them spray the fire extinguishing agent at the same time to extinguish the fire, further enhancing the fire protection effect of the electrical ring main unit.

[0017] 3. By setting up branch pipes, the third control valve and the air pump, when it is detected that the space environment temperature inside the ring network cabinet body is high but does not exceed the red line value of the set fire extinguishing temperature, the third control valve, the first control valve and the second control valve can be opened, and each group of nozzles can be controlled to move back and forth and unfold inside the ring network cabinet body. The air pump generates suction, and through the U-shaped pipe and the conveying pipe, under the action of multiple groups of evenly distributed nozzles and multiple groups of moving nozzles, the high-temperature hot air in the ring network cabinet body can be sucked, and the high-temperature hot air is extracted to the outside while fresh air is introduced from the heat dissipation groove, thereby accelerating the replacement efficiency of the internal and external air, so as to further improve the heat dissipation function, avoid the continuous increase of the internal temperature, and better play a fire prevention effect.

[0018] 4. When the bottom end of the fixed pipe is inserted and installed in the connecting pipe of the fire extinguisher tank, by arranging the connecting plate, the fixing plate, the positioning ring, the clamping ring and the silicone pad therebetween, as the fixed pipe and the connecting pipe are slidably connected, the connecting plate can press the positioning ring to slide on the fixed pipe and lean against the fixing plate, so that the positioning ring can be pressed tightly between the fixing plate and the connecting plate, and the clamping rings on both sides can drive the silicone pad to clamp and wrap between the outer walls of the connecting plate and the fixing plate; At the same time, a first clamping ring, an annular clamping groove and a second clamping ring which can be plugged into and matched with each other are provided between the connecting plate, the positioning ring and the fixed plate, thereby further strengthening the tightness between the fixed plate and the connecting plate. With the joint cooperation of this structure, not only can the stability of the fire extinguisher tank during installation be greatly enhanced, but also the sealing at the interface can be effectively achieved, thereby realizing the safe and stable assembly and replacement of the fire extinguisher tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the fireproof box and the ring main unit body of the present invention; Figure 3 This is a schematic structural diagram of the back of the ring main unit body of the present invention; Figure 4 It is a structural schematic diagram of the ring main unit body and the fixing frame being separated from each other in the present invention; Figure 5 This is one of the partial cross-sectional views of the ring main unit body of the present invention; Figure 6 This is the second partial cross-sectional view of the ring main unit body of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention; Figure 8 It is a schematic diagram of the internal structure of the fixing frame of the present invention; Fig. 9 It is a schematic diagram of the connection structure between the cabinet chamber and the blocking mechanism of the present invention; Fig.10 An exploded view of the cabinet and the blocking mechanism of the present invention; Fig.11 This is one of the structural schematic diagrams of the connection between the rotating drum and the nozzle in the present invention; Fig.12 This is the second structural schematic diagram of the connection between the rotating drum and the nozzle in the present invention; Fig.13 One of the longitudinal cross-sectional views of the rotary drum and the boss in the present invention; Fig.14 The second longitudinal cross-sectional view of the rotary drum and the boss in the present invention; Fig.15 It is a schematic diagram of the connection structure between the rotating drum and the collision frame in the present invention; Fig.16 This is a schematic diagram of the installation structure of the fire extinguisher tank in the fireproof box of the present invention; Fig.17 It is a structural schematic diagram of the fire extinguishing tank and the fireproof box of the present invention when they are separated; Fig.18 It is a schematic diagram of the structure when the fixed pipe and the connecting pipe of the present invention are separated; Fig.19 It is a longitudinal cross-sectional view of the fixed pipe and the connecting pipe of the present invention; Fig. 20 For the present invention Figure 1 Enlarged view of part A in the middle.

[0021] Description of reference numerals: 1. Ring network cabinet body; 2. Cabinet door; 3. Fireproof box; 4. Protection plate; 5. Fixed pipe; 6. U-shaped pipe; 7. Nozzle; 8. Fiber optic temperature sensor; 9. Fire detector; 10. First control valve; 11. Fire extinguisher; 12. Holder; 13. Hydraulic cylinder; 14. Connecting pipe; 15. Solenoid valve; 16. Delivery pipe; 17. Second control valve; 18. Delivery hose; 19. Transfer cylinder; 20. Cylinder; 21. Boss; 22. Drive motor; 23. Screw rod; 24. Movable block; 25. Connecting arm; 26. Nozzle; 27. Corrugated telescopic pipe; 28. Impact frame; 29. ​​Opening; 30. Fixed frame; 31. Fixed plate ; 32. Threaded rod; 33. Drive motor; 34. Movable column; 35. Built-in temperature sensor; 36. Channel; 37. Support ring; 38. First spring; 39. Blocking block; 40. L-shaped plate; 41. Limit rod; 42. Cabinet chamber; 43. Fixed plate; 44. Guide frame; 45. Connecting handle; 46. Support rod; 47. Movable ring; 48. Clamp ring; 49. Silicone pad; 50. Second spring; 51. Connecting rod; 52. Positioning ring; 53. Connecting plate; 54. Annular groove; 55. First clamp ring; 56. Second clamp ring; 57. Heat dissipation groove; 58. Arc baffle; 59. Branch pipe; 60. Third control valve; 61. Air pump. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] The present invention provides Figure 1-Figure 20 A fireproof electrical ring main unit is shown, comprising: A ring main unit body 1, a cabinet door 2 is arranged on the side wall of the ring main unit body 1, and a plurality of cabinet chambers 42 are arranged inside the ring main unit body 1; The fireproof box 3 is arranged on one side of the ring main unit body 1, and a liftable card seat 12 is arranged at the bottom of the fireproof box 3, a fire extinguishing tank 11 is installed on the top of the card seat 12, and a connecting pipe 14 is connected to the top of the fire extinguishing tank 11, and a solenoid valve 15 is arranged on the connecting pipe 14; A hydraulic cylinder 13 is installed at the bottom of the fireproof box 3, and the top of the hydraulic cylinder 13 is connected to the base 12. The top of the base 12 is provided with a groove, and the bottom of the fire extinguishing tank 11 can be plugged into the groove. When in use, the fireproof box 3 can be opened to embed the fire extinguisher tank 11 on the holder 12, and the holder 12 can be driven to rise by the hydraulic cylinder 13, so that the holder 12 drives the fire extinguisher tank 11 to rise, and then the bottom end of the fixed pipe 5 is plugged into the connecting pipe 14, so that the fire extinguisher tank 11 can be docked and installed with the fixed pipe 5, otherwise the fire extinguisher tank 11 can be removed, and then the fire extinguisher tank 11 can be replaced regularly to ensure safe use.

[0024] A fire detector 9 is installed on the top side of the ring main unit 1, an optical fiber temperature sensor 8 is installed on the side wall of the U-shaped pipe 6 through a clamp, and a built-in temperature sensor 35 is provided inside the cabinet chamber 42. Based on this, the optical fiber temperature sensor 8 can detect the temperature of the overall space environment inside the ring main unit 1, and the built-in temperature sensor 35 can detect the temperature in each cabinet chamber 42 respectively, and the fire detector 9 can further detect whether a fire occurs in the ring main unit 1.

[0025] A pipeline assembly, the pipeline assembly includes a fixed pipeline 5 installed on one side of the top of the ring network cabinet body 1 near the top of the fireproof box 3, one end of the fixed pipeline 5 extending to the inside of the fireproof box 3 is connected to the connecting pipe 14, and one end of the fixed pipeline 5 extending to the inside of the ring network cabinet body 1 is provided with a U-shaped pipeline 6 near the top of the cabinet chamber 42, the U-shaped pipeline 6 is fixedly connected to the ring network cabinet body 1 through a clamp, and a plurality of nozzles 7 are connected to the bottom side of the U-shaped pipeline 6, and a first control valve 10 is provided at one end of the fixed pipeline 5 near the U-shaped pipeline 6; Specifically by Fig.16 , Fig.17 , Fig.18 and Fig.19 As shown, a connecting disk 53 is provided at the top of the connecting pipe 14, a fixing disk 43 facing the connecting disk 53 is fixed at the bottom end of the fixed pipe 5, and a movable ring 47 and a positioning ring 52 are symmetrically sleeved on the upper and lower sides of the fixing disk 43 at the bottom end of the fixed pipe 5, and connecting rods 51 are symmetrically penetrated at both ends of the fixing disk 43, and the two ends of the connecting rod 51 are respectively fixedly connected to the movable ring 47 and the positioning ring 52, and a second spring 50 is provided on the outer wall of the connecting rod 51 between the movable ring 47 and the fixing disk 43, and guide frames 44 are symmetrically connected to both sides of the fixing disk 43, and connecting handles 45 are sleeved on the two guide frames 44, and a support rod 46 is rotatably connected between the top of the connecting handle 45 and the movable ring 47 through a rotating shaft, and a clamping ring 48 facing the fixing disk 43 and the positioning ring 52 is fixed on the inner side of the connecting handle 45, and a silicone pad 49 is provided on the inner side of the clamping ring 48, and the end of the fixed pipe 5 close to the fixing disk 43 can be plugged and matched in the connecting pipe 14.

[0026] A first snap ring 55 is provided on the top side of the connecting disk 53 , a second snap ring 56 is provided on the bottom side of the fixing disk 43 , annular snap grooves 54 are provided on both sides of the positioning ring 52 , and the first snap ring 55 and the second snap ring 56 are respectively snapped into the two annular snap grooves 54 .

[0027] When installing the fire extinguisher tank 11, as the holder 12 drives the fire extinguisher tank 11 to rise, the connecting pipe 14 on the fire extinguisher tank 11 can drive the connecting plate 53 to press against the fixed plate 43, and then the bottom end of the fixed pipe 5 is inserted into the connecting pipe 14, and the connecting plate 53 squeezes the positioning ring 52 to slide on the fixed pipe 5, and then the positioning ring 52 can drive the connecting rod 51 to move, so that the connecting rod 51 drives the movable ring 47 to slide on the fixed pipe 5 and stretch the second spring 50, and then the movable ring 47 can drive the support rods 46 on both sides to rotate, so that the support rods 46 can pull the connecting handle 45 to slide on the guide frame 44, so that the connecting handle 45 can drive the clamping ring 48 to lean against the fixed plate 43 and the connecting plate 53, and when the positioning ring 52 is pressed between the fixed plate 43 and the connecting plate 53, the two clamping rings 48 drive the silicone pad 49 to clamp and wrap between the outer wall of the connecting plate 53 and the fixed plate 43; At the same time, the first snap ring 55 on the top side of the connecting plate 53 can be embedded in the annular groove 54 on the bottom side of the fixed plate 43, and the second snap ring 56 on the bottom side of the fixed plate 43 can be embedded in the annular groove 54 on the top side of the fixed plate 43, so as to further strengthen the tightness between the fixed plate 43 and the connecting plate 53. With the joint cooperation of this structure, not only can the stability of the connection be greatly enhanced, but also the sealing can be effectively achieved, so that the assembly and replacement of the fire extinguisher tank 11 can be realized safely and stably.

[0028] The fixed-point injection mechanism includes a delivery pipe 16 provided at one end of the fixed pipe 5 close to the U-shaped pipe 6, a second control valve 17 is provided at one end of the delivery pipe 16 close to the fixed pipe 5, and a delivery hose 18 is installed at the other end of the delivery pipe 16, and an adjustable nozzle assembly is connected to the bottom end of the delivery hose 18, and a transverse movement assembly is installed on the back of the ring main unit body 1, and the transverse movement assembly is used to drive the nozzle assembly to move transversely; Specifically by Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the transverse movement assembly includes an opening 29 opened on the back of the ring network cabinet body 1, and a fixed frame 30 is installed at the outer end of the opening 29. Fixed plates 31 are symmetrically connected to the two sides of the fixed frame 30, and the fixed plates 31 are fixedly connected to the ring network cabinet body 1 through bolts. The interior of the fixed frame 30 is rotatably connected to a threaded rod 32 through a bearing, and the outer wall of the threaded rod 32 is screwed with a movable column 34 through a threaded engagement. The side wall of the movable column 34 is provided with a convex strip, and the inner side of the fixed frame 30 is provided with a sliding groove matching the convex strip. A driving motor 33 is fixed to one end of the fixed frame 30, and the output end of the driving motor 33 is connected to the threaded rod 32.

[0029] The backs of the multiple cabinets 42 are each provided with a channel 36 facing the nozzle assembly, and a blocking mechanism is provided on the channel 36 .

[0030] The lateral movement assembly can be installed on the back of the ring main unit body 1 by connecting the fixed frame 30 to the opening 29 through the fixing plate 31 and the bolts. When in use, the threaded rod 32 can be driven to rotate by the driving motor 33, so that the threaded rod 32 drives the movable column 34 to move in a straight line in the fixed frame 30, and then the movable column 34 can drive the nozzle assembly to move, thereby controlling the nozzle assembly to move to the channels 36 on each cabinet chamber 42 respectively.

[0031] Specifically by Figure 6 , Fig.11 , Fig.12 , Fig.13 , Fig.14 and Fig.15 As shown, the nozzle assembly includes a cylinder 20 fixedly connected to the side wall of the movable column 34 by bolts, the output end of the cylinder 20 is connected to the rotating cylinder 19, both ends of the delivery hose 18 are connected to the rotating cylinder 19 and the delivery pipeline 16 through threaded joints, a boss 21 is provided on one side of the rotating cylinder 19, a driving motor 22 is installed in the boss 21, the output end of the driving motor 22 extends to the outside of the boss 21 and is connected to a screw rod 23, and a collision frame 28 facing the channel 36 is fixed on one side of the rotating cylinder 19 and outside the screw rod 23; The side wall of the central rotating cylinder 19 is located between the central rotating cylinder 19 and the collision frame 28, and a plurality of nozzles 26 are provided through a circular array of rotating shafts, and a corrugated telescopic tube 27 is connected between the nozzle 26 and the central rotating cylinder 19, and the outer wall of the screw rod 23 is connected to a movable block 24 through a thread, and a connecting arm 25 is rotatably connected between the movable block 24 and the plurality of nozzles 26 through a rotating shaft.

[0032] Specifically by Figure 5 , Figure 6 , Fig. 9 and Fig.10 As shown, the blocking mechanism includes a support ring 37 fixedly connected to the inner side of the cabinet chamber 42 toward the channel 36 by bolts, a blocking block 39 is installed inside the support ring 37, one end of the blocking block 39 is plugged into the channel 36, and the other end of the blocking block 39 is provided with a plurality of L-shaped plates 40 in a circular array, a first spring 38 is fixed between the end of the L-shaped plate 40 and the support ring 37, and a limiting rod 41 is connected through the first spring 38 and the L-shaped plate 40, and one end of the limiting rod 41 is fixedly connected to the support ring 37. Based on this, the collision frame 28 can push the blocking block 39 embedded in the channel 36 to move, so that the blocking block 39 pulls the first spring 38 to extend through the L-shaped plate 40, and under the support and limit of the limit rod 41, the blocking block 39 can be pushed out of the channel 36 along a straight line. Conversely, when the collision frame 28 retreats, the blocking block 39 can be reset and re-embedded in the channel 36 under the rebound of each group of first springs 38, thereby achieving safe closure of the cabinet chamber 42.

[0033] By separately arranging a built-in temperature sensor 35 in each cabinet chamber 42, the temperature of each cabinet chamber 42 can be detected separately, and when the temperature in a cabinet chamber 42 is abnormal, the abnormal temperature data can be transmitted to the control system, and the control system can start the transverse movement component to make the movable column 34 on the transverse movement component drive the nozzle assembly to move to the channel 36 position at the back of the abnormal cabinet chamber 42, and at the same time close the first control valve 10 and open the second control valve 17, and then the nozzle assembly works, so that the cylinder 20 drives the transfer cylinder 19 to move, and the transfer cylinder 19 can drive the collision frame 28 to push the blocking block 39 embedded in the channel 36 to move, so that the blocking block 39 pulls the first spring 38 to extend through the L-shaped plate 40, and under the support and limit of the limit rod 41, the blocking block 39 can be pushed out of the channel 36 along a straight line, and at the same time, each group of nozzles 26 between the transfer cylinder 19 and the collision frame 28 passes through the channel 36 and enters the cabinet chamber 42; By starting the driving motor 22, the driving motor 22 can drive the screw rod 23 to rotate, and then the screw rod 23 drives the movable block 24 to move, so that the movable block 24 drives the connecting arms 25 of the side wall to rotate at the same time, and then the connecting arms 25 can drive the nozzles 26 to rotate on the rotating cylinder 19, so that the multiple groups of nozzles 26 can be controlled to be umbrella-shaped and simultaneously open outward, and then the solenoid valve 15 is opened to allow the fire extinguishing agent in the fire extinguishing tank 11 to rush into the delivery pipe 16 through the fixed pipe 5, and then enter the rotating cylinder 19 through the delivery hose 18, and then spray out from the nozzle 26 through the corrugated telescopic pipe 27, and the opened groups of nozzles 26 can greatly expand the spraying range of the fire extinguishing agent, thereby ensuring that the high temperature or burning electrical components in the cabinet room 42 can be effectively suppressed; In summary, under the above-mentioned fixed-point operation working mode, timely fire extinguishing treatment at the location of high-temperature fire source can be achieved efficiently and accurately, which not only greatly improves the fire extinguishing efficiency, but also has strong pertinence, effectively avoids the waste of a large amount of stored fire extinguishing agent, and can ensure subsequent continuous fire extinguishing treatment, thereby greatly improving the fire prevention effect; Once the optical fiber temperature sensor 8 and the fire detector 9 detect a large-scale fire in the ring main unit 1, the first control valve 10 and the second control valve 17 can be opened at the same time to switch to a full working mode. Even if the fire extinguishing agent in the fire extinguishing tank 11 is respectively rushed into the U-shaped pipe 6 and the delivery pipe 16, both of them spray the fire extinguishing agent at the same time to perform the fire extinguishing operation, further enhancing the fire protection effect of the electrical ring main unit.

[0034] Specifically by Figure 1 , Figure 2 , Figure 5 , Figure 6 and Fig. 20As shown, the pipeline assembly also includes a branch pipe 59 arranged at one end of the fixed pipeline 5 near the top of the fireproof box 3, an air pump 61 is installed on the top of the fireproof box 3, a third control valve 60 is installed at one end of the branch pipe 59, and the other end of the branch pipe 59 is connected to the air pump 61, and a plurality of heat dissipation grooves 57 are arranged on the side wall of the cabinet door 2.

[0035] The outer side of the cabinet door 2 is provided with a plurality of arc-shaped baffles 58 facing the heat dissipation grooves 57, and the tops of the ring main unit 1 and the fireproof box 3 are both provided with protective plates 4. Based on this, the arc-shaped baffles 58 can prevent rainwater from directly entering the ring main unit 1 through the heat dissipation grooves 57 when it rains.

[0036] By setting the branch pipe 59, when the optical fiber temperature sensor 8 detects that the spatial ambient temperature in the ring network cabinet body 1 is high but does not exceed the red line value of the set fire extinguishing temperature, the third control valve 60 can be started to open the branch pipe 59, and the first control valve 10 and the second control valve 17 can be opened at the same time, and the movable column 34 can be controlled to drive the nozzle assembly to move back and forth in the ring network cabinet body 1, and each group of nozzles 26 on the nozzle assembly can be expanded outward, and suction is generated by the operation of the air pump 61. Through the U-shaped pipe 6 and the conveying pipe 16, under the action of multiple groups of evenly distributed nozzles 7 and multiple groups of nozzles 26 moving back and forth, the high-temperature hot air in the ring network cabinet body 1 can be sucked. While the high-temperature hot air is extracted to the outside, fresh air from the outside can enter the interior of the ring network cabinet body 1 through multiple groups of heat dissipation grooves 57, thereby accelerating the replacement efficiency of the internal and external air, so as to further improve the heat dissipation function, avoid the continuous increase in internal temperature, and better play a fire prevention effect.

[0037] refer to Figure 1-Figure 20 As shown, a method for assembling a fireproof electrical ring main unit is characterized by comprising the following steps: S1. Connect the fixing frame 30 to the opening 29 by means of the fixing plate 31 and the bolts, and then install the transverse movement assembly on the back of the ring main unit 1; S2. The nozzle assembly is mounted on the movable column 34 on the transverse assembly by bolts, and then the delivery hose 18 is mounted between the transfer cylinder 19 and the delivery pipe 16 by using a threaded joint, so that the fixed-point spraying mechanism can be assembled in the ring main unit body 1; S3. The support ring 37 is fixedly connected to the channel 36 inside the cabinet chamber 42 by bolts, so that the blocking block 39 on the support ring 37 is inserted into the channel 36, so that the blocking mechanism can be installed at the channel 36 to ensure the sealing of the cabinet chamber 42; S4. Open the fireproof box 3 and embed the fire extinguisher tank 11 on the holder 12. Drive the holder 12 to rise through the hydraulic cylinder 13, so that the holder 12 drives the fire extinguisher tank 11 to rise, and then the bottom end of the fixed pipe 5 is plugged into the connecting pipe 14. At the same time, the connecting plate 53 and the fixing plate 43 are tightly clamped on both sides of the positioning ring 52, and the two clamping rings 48 can drive the silicone pad 49 to clamp and wrap between the connecting plate 53 and the outside of the fixing plate 43, thereby ensuring the tightness and sealing of the installation of the fire extinguisher tank 11 and the fixed pipe 5 for safe use.

[0038] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fireproof electrical ring main unit, characterized in that: include: A ring main unit body (1), wherein a cabinet door (2) is provided on a side wall of the ring main unit body (1), and a plurality of cabinet chambers (42) are provided inside the ring main unit body (1); A fireproof box (3), the fireproof box (3) being arranged on one side of the ring main unit body (1), and a liftable holder (12) being arranged at the inner bottom of the fireproof box (3), a fire extinguisher tank (11) being installed at the top of the holder (12), a connecting pipe (14) being connected to the top of the fire extinguisher tank (11), and a solenoid valve (15) being arranged on the connecting pipe (14); A pipeline assembly, the pipeline assembly comprising a fixed pipeline (5) installed on one side of the top of the ring network cabinet body (1) near the top of the fireproof box (3), the fixed pipeline (5) extending to the inside of the fireproof box (3) is connected to the connecting pipe (14), and the fixed pipeline (5) extending to the inside of the ring network cabinet body (1) is provided with a U-shaped pipeline (6) near the top of the cabinet chamber (42), the U-shaped pipeline (6) is fixedly connected to the ring network cabinet body (1) through a clamp, and the bottom side of the U-shaped pipeline (6) is connected to a plurality of nozzles (7), and the fixed pipeline (5) is provided with a first control valve (10) at one end near the U-shaped pipeline (6); A fixed-point spraying mechanism, the fixed-point spraying mechanism comprising a delivery pipe (16) arranged at one end of a fixed pipe (5) close to a side of a U-shaped pipe (6), a second control valve (17) being arranged at one end of the delivery pipe (16) close to the fixed pipe (5), and a delivery hose (18) being installed at the other end of the delivery pipe (16), the bottom end of the delivery hose (18) being connected to an adjustable nozzle assembly, and a transverse movement assembly being installed at the back of the ring main unit body (1), the transverse movement assembly being used to drive the nozzle assembly to move transversely; The backs of the plurality of cabinets (42) are each provided with a channel (36) facing the nozzle assembly, and a blocking mechanism is provided on the channel (36).

2. A fireproof electrical ring main unit according to claim 1, characterized in that: A hydraulic cylinder (13) is installed at the bottom end of the fireproof box (3), the top end of the hydraulic cylinder (13) is connected to the holder (12), the top end of the holder (12) is provided with a groove, and the bottom end of the fire extinguishing tank (11) can be plugged into the groove; A fire detector (9) is installed on the top side of the ring main unit body (1), an optical fiber temperature sensor (8) is installed on the side wall of the U-shaped pipe (6) via a clamp, and a built-in temperature sensor (35) is provided inside the cabinet chamber (42).

3. A fireproof electrical ring main unit according to claim 1, characterized in that: The top of the connecting pipe (14) is provided with a connecting plate (53), the bottom of the fixed pipe (5) is fixed with a fixing plate (43) facing the connecting plate (53), and the bottom of the fixed pipe (5) is located on the upper and lower sides of the fixing plate (43) and is symmetrically sleeved with a movable ring (47) and a positioning ring (52), the two ends of the fixing plate (43) are symmetrically penetrated by connecting rods (51), the two ends of the connecting rod (51) are respectively fixedly connected to the movable ring (47) and the positioning ring (52), and the outer wall of the connecting rod (51) is provided between the movable ring (47) and the fixing plate (43). Two springs (50), the two sides of the fixed disk (43) are symmetrically connected with guide frames (44), and the two guide frames (44) are both sleeved with connecting handles (45), and the top of the connecting handle (45) is rotatably connected to the movable ring (47) through a rotating shaft with a support rod (46), and the inner side of the connecting handle (45) is fixed with a clamping ring (48) facing the fixed disk (43) and the positioning ring (52), and the inner side of the clamping ring (48) is provided with a silicone pad (49), and the end of the fixed pipe (5) close to the fixed disk (43) can be plugged into the connecting pipe (14).

4. A fireproof electrical ring main unit according to claim 3, characterized in that: A first snap ring (55) is provided on the top side of the connecting disk (53), a second snap ring (56) is provided on the bottom side of the fixing disk (43), annular snap grooves (54) are provided on both sides of the positioning ring (52), and the first snap ring (55) and the second snap ring (56) are respectively snapped into the two annular snap grooves (54).

5. The fireproof electrical ring main unit according to claim 1, characterized in that: The transverse movement assembly comprises an opening (29) formed on the back of the ring network cabinet body (1); a fixed frame (30) is installed at the outer end of the opening (29); fixed plates (31) are symmetrically connected to the two sides of the fixed frame (30); and the fixed plates (31) are fixedly connected to the ring network cabinet body (1) by bolts; a threaded rod (32) is rotatably connected to the interior of the fixed frame (30) via a bearing; a movable column (34) is screwed to the outer wall of the threaded rod (32) via a thread; a convex strip is provided on the side wall of the movable column (34); and a sliding groove matching the convex strip is provided on the inner side of the fixed frame (30); a driving motor (33) is fixed to one end of the fixed frame (30); and an output end of the driving motor (33) is connected to the threaded rod (32).

6. A fireproof electrical ring main unit according to claim 5, characterized in that: The nozzle assembly comprises a cylinder (20) fixedly connected to the side wall of the movable column (34) by bolts, the output end of the cylinder (20) is connected to the central rotating cylinder (19), both ends of the delivery hose (18) are connected to the central rotating cylinder (19) and the delivery pipe (16) by threaded joints, a boss (21) is provided on one side of the central rotating cylinder (19), a drive motor (22) is installed in the boss (21), the output end of the drive motor (22) extends outside the boss (21) and is connected to a screw rod (23), and a collision frame (28) facing the channel (36) is fixed on one side of the central rotating cylinder (19) and outside the screw rod (23); The side wall of the central rotating cylinder (19) is located between the central rotating cylinder (19) and the collision frame (28), and is provided with a plurality of nozzles (26) via a rotating shaft annular array, and a corrugated telescopic tube (27) is connected between the nozzles (26) and the central rotating cylinder (19), and the outer wall of the screw rod (23) is connected to a movable block (24) via a thread, and a connecting arm (25) is rotatably connected between the movable block (24) and the plurality of nozzles (26) via a rotating shaft.

7. The fireproof electrical ring main unit according to claim 1, characterized in that: The blocking mechanism comprises a support ring (37) fixedly connected to the inner side of the cabinet (42) toward the channel (36) by bolts, a blocking block (39) is installed inside the support ring (37), one end of the blocking block (39) is plugged into the channel (36), and the other end of the blocking block (39) is provided with a plurality of L-shaped plates (40) in a circular array, a first spring (38) is fixed between the end of the L-shaped plate (40) and the support ring (37), and a limiting rod (41) is connected through the first spring (38) and the L-shaped plate (40), and one end of the limiting rod (41) is fixedly connected to the support ring (37).

8. The fireproof electrical ring main unit according to claim 1, characterized in that: The pipeline assembly also includes a branch pipe (59) arranged at one end of the fixed pipeline (5) near the top of the fireproof box (3), an air pump (61) is installed on the top of the fireproof box (3), a third control valve (60) is installed at one end of the branch pipe (59), and the other end of the branch pipe (59) is connected to the air pump (61), and the side wall of the cabinet door (2) is provided with a plurality of heat dissipation grooves (57).

9. A fireproof electrical ring main unit according to claim 8, characterized in that: A plurality of arc-shaped baffles (58) facing the heat dissipation slots (57) are arranged on the outer side of the cabinet door (2), and protective plates (4) are arranged on the top of the ring network cabinet body (1) and the fireproof box (3).

10. A method for assembling a fireproof electrical ring main unit according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Connect the fixing frame (30) to the opening (29) through the fixing plate (31) and bolts, and then install the transverse movement assembly on the back of the ring main unit (1); S2, the nozzle assembly is mounted on the movable column (34) on the transverse movement assembly by means of bolts, and then the delivery hose (18) is mounted between the intermediate drum (19) and the delivery pipe (16) by means of a threaded joint, so that the fixed-point spraying mechanism can be assembled in the ring main unit body (1); S3. The support ring (37) is fixedly connected to the channel (36) inside the cabinet (42) by means of bolts, so that the blocking block (39) on the support ring (37) is inserted into the channel (36), thereby the blocking mechanism can be installed at the channel (36) to ensure the sealing property of the cabinet (42); S4. Open the fireproof box (3) and embed the fire extinguisher tank (11) on the holder (12). Drive the holder (12) upward through the hydraulic cylinder (13), so that the holder (12) drives the fire extinguisher tank (11) to rise. Then, the bottom end of the fixed pipe (5) is plugged into the connecting pipe (14). At the same time, the connecting plate (53) and the fixing plate (43) are tightly clamped on both sides of the positioning ring (52). The two clamping rings (48) can drive the silicone pad (49) to clamp and wrap between the connecting plate (53) and the outside of the fixing plate (43), thereby ensuring the tightness and sealing of the installation of the fire extinguisher tank (11) and the fixed pipe (5) for safe use.

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