A fireproof electrical ring main unit and its assembly method

Abstract

The present invention discloses a fireproof electrical ring main unit and its assembly method, specifically relating to the technical field of electrical ring main units, including a ring main unit body. In the present invention, a fixed-point spraying mechanism is installed on the back of the cabinet chamber. The fixed-point spraying mechanism is composed of structures such as a transverse movement component and a spray pipe component. Moreover, a channel facing the spray pipe component is provided on the back of the cabinet chamber, and a sealing mechanism is provided at the channel to ensure the closure of the cabinet chamber. When the temperature in a certain cabinet chamber is abnormal, the spray pipe component enters the cabinet chamber and unfolds, which can greatly expand the spraying range of the fire extinguishing agent, ensuring that the high-temperature or burning electrical components in the cabinet chamber can be effectively suppressed. In this working mode of fixed-point operation, it can efficiently and accurately achieve timely fire extinguishing treatment of the high-temperature fire source position, not only greatly improving the fire extinguishing efficiency, but also having strong pertinence, effectively avoiding a large amount of waste of the stored fire extinguishing agent, being able to ensure subsequent continuous fire extinguishing treatment, and thus greatly improving the fire prevention effect.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical ring main units, and particularly relates to a fire-proof electrical ring main unit and an assembly method thereof. Background Art

[0002] An electrical ring main unit is a set of power transmission and distribution electrical equipment (high-voltage switchgear) installed in a metal or non-metal insulated cabinet body or made into a prefabricated sectionalized ring main power supply unit. Its core part adopts a load switch and a fuse, and has the advantages of simple structure, small volume, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution substations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and industrial enterprises.

[0003] Currently, during the use of electrical ring main units, in order to prevent fires caused by excessive temperature or electrical short circuits inside them, fire protection is often required. Existing fire-proof electrical ring main units mostly assemble fire extinguishers on the installation cabinet. When a fire breaks out inside the installation cabinet, the fire extinguishing agent in the fire extinguisher is sprayed into the installation cabinet through a pipeline to achieve fire prevention. For example, in the Chinese patent with the patent number "CN113964667A", "An Electrical Ring Main Unit with a Built-in Fire-Proof and Explosion-Proof Structure and an Assembly Method Thereof" is disclosed. This device installs a fire extinguisher bottle on the top of the ring main unit. When an abnormal temperature inside the ring main unit is detected, the solenoid valve on the fire extinguisher bottle is opened, and the substance in the fire extinguisher bottle is sprayed into the ring main unit, so that the ring main unit is extinguished. However, since multiple compartments are usually arranged in the cabinet body and the switching devices are encapsulated in each compartment, during the working process, it is often the components in a certain compartment that operate overloaded, resulting in high temperature or short circuit to cause a fire source, and then triggering a series of fires. The fire extinguishing agent sprayed into the cabinet is often sprayed over a large area on each compartment, which is not only difficult to accurately handle the position of the high-temperature fire source in a timely manner, has poor pertinence, delays the fire extinguishing efficiency, but also easily wastes a large amount of stored fire extinguishing agent in the early stage. Once the fire spreads, it may affect the subsequent continuous fire extinguishing treatment, resulting in poor fire prevention effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a fire-proof electrical ring main unit to solve the above deficiencies in the technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fire-proof electrical ring main unit and an assembly method thereof, including:

[0006] A ring main unit body, a cabinet door is provided on the side wall of the ring main unit body, and a plurality of compartments are provided inside the ring main unit body;

[0007] Fireproof box, the fireproof box is arranged on one side of the ring main unit body, and a liftable clamping seat is arranged at the inner bottom end of the fireproof box. A fire extinguishing tank is installed on the top of the clamping seat. A connecting pipe is connected to the top end of the fire extinguishing tank, and a solenoid valve is arranged on the connecting pipe;

[0008] Pipeline assembly, the pipeline assembly includes a fixed pipeline installed on one side of the top end of the ring main unit body near the upper part of the fireproof box. One end of the fixed pipeline extending into the fireproof box is connected to the connecting pipe, and one end of the fixed pipeline extending into the ring main unit body is provided with a U-shaped pipeline near the upper part of the cabinet chamber. The U-shaped pipeline is fixedly connected to the ring main unit body through a clamp, and a plurality of nozzles are connected to the bottom side of the U-shaped pipeline. A first control valve is arranged at one end of the fixed pipeline near the U-shaped pipeline;

[0009] Fixed-point spraying mechanism, the fixed-point spraying mechanism includes a conveying pipeline arranged on one side of one end of the fixed pipeline near the U-shaped pipeline. A second control valve is arranged at one end of the conveying pipeline near the fixed pipeline, and a conveying hose is installed at the other end of the conveying pipeline. The bottom end of the conveying hose is connected with an adjustable nozzle assembly. 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 horizontally;

[0010] Channels facing the nozzle assembly are opened on the backs of multiple cabinet chambers, and a blocking mechanism is arranged on the channels.

[0011] 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 clamping seat. A groove is opened at the top end of the clamping seat, and the bottom end of the fire extinguishing tank can be inserted and matched in the groove;

[0012] A fire detector is installed on the inner top side of the ring main unit body. An optical fiber temperature sensor is installed on the side wall of the U-shaped pipeline through a clamp, and an internal temperature sensor is arranged inside the cabinet chamber.

[0013] Preferably, a connecting disc is arranged at the top end of the connecting pipe. A fixed disc facing the connecting disc is fixed at the bottom end of the fixed pipeline. An activity ring and a positioning ring are symmetrically sleeved on the upper and lower sides of the fixed disc at the bottom end of the fixed pipeline. The two ends of the fixed disc are symmetrically penetrated by connecting rods. The two ends of the connecting rods are respectively fixed to the activity ring and the positioning ring. A second spring is arranged on the outer wall of the connecting rod between the activity ring and the fixed disc. The two sides of the fixed disc are symmetrically connected with guide frames. Connecting handles are sleeved on both guide frames. A support rod is rotationally connected between the top end of the connecting handle and the activity ring through a rotating shaft. A clamping ring facing the fixed disc and the positioning ring is fixed inside the connecting handle. A silica gel pad is arranged inside the clamping ring. One end of the fixed pipeline near the fixed disc can be inserted and matched in the connecting pipe.

[0014] Preferably, a first clamping ring is provided on the top side of the connecting disc, a second clamping ring is provided on the bottom side of the fixed disc, annular clamping grooves are formed 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.

[0015] Preferably, the transverse movement assembly includes an opening formed in the back of the ring main cabinet body, a fixed frame is installed at the outer end of the opening, fixing plates are symmetrically connected to both sides of the fixed frame, and the fixing plates are fixedly connected to the ring main cabinet body by bolts. A threaded rod is rotatably connected to the inside of the fixed frame through a bearing, a movable column is screwed onto the outer wall of the threaded rod, a convex strip is provided on the side wall of the movable column, and a sliding groove matching the convex strip is provided inside the fixed frame. A driving motor is fixed at one end of the fixed frame, and the output end of the driving motor is connected to the threaded rod.

[0016] Preferably, the spray pipe assembly includes a cylinder fixedly connected to the side wall of the movable column by bolts, the output end of the cylinder is connected with a transfer cylinder, both ends of the delivery hose are connected to the transfer cylinder and the delivery pipe through threaded joints, a convex platform is provided on one side of the transfer cylinder, a driving motor is installed inside the convex platform, and the output end of the driving motor extends outside the convex platform and is connected with a lead screw. A collision frame facing the channel is fixed outside the lead screw on one side of the transfer cylinder;

[0017] A plurality of spray pipes are annularly arranged on the side wall of the transfer cylinder between the transfer cylinder and the collision frame through a rotating shaft, and a corrugated expansion pipe is connected between the spray pipe and the transfer cylinder. A movable block is screwed onto the outer wall of the lead screw, and connecting arms are rotatably connected between the movable block and the plurality of spray pipes through a rotating shaft.

[0018] Preferably, the blocking mechanism includes a support ring fixedly connected to the inner side of the cabinet chamber facing the channel by bolts, a blocking block is installed inside the support ring, one end of the blocking block is inserted into the channel, and a plurality of L-shaped plates are annularly arranged at the other end of the blocking block. 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.

[0019] Preferably, the pipeline assembly further includes a branch pipe provided above the fireproof box near one end of the fixed pipe, 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. A plurality of heat dissipation grooves are provided on the side wall of the cabinet door.

[0020] Preferably, a plurality of arc-shaped baffles facing the heat dissipation grooves are provided on the outer side of the cabinet door, and protective plates are provided on the tops of the ring main cabinet body and the fireproof box.

[0021] An assembly method of a fireproof electrical ring main cabinet includes the following steps:

[0022] S1. Connect the fixed frame to the opening through the fixed plate and bolts, and then the transverse movement assembly can be installed on the back of the ring main unit body;

[0023] S2. Install the nozzle assembly on the movable column of the transverse movement assembly through bolts, and then install the delivery hose between the transfer cylinder and the delivery pipeline by using a threaded joint, so that the fixed-point spraying mechanism can be assembled in the ring main unit body;

[0024] S3. Fix and connect the support ring to the channel inside the cabinet through bolts, so that the blocking block on the support ring is inserted into the channel, and then the blocking mechanism can be installed at the channel to ensure the sealing of the cabinet;

[0025] S4. Open the fireproof box, embed the fire extinguishing tank on the card seat, drive the card seat to rise through the hydraulic cylinder, so that the card seat drives the fire extinguishing tank to rise, and then the bottom end of the fixed pipeline is inserted and matched in 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 silica gel pad to clamp and wrap around the outside between the connecting plate and the fixed plate, thus ensuring the tightness and sealing of the installation of the fire extinguishing tank and the fixed pipeline for safe use.

[0026] In the above technical solution, the technical effects and advantages provided by the present invention are as follows:

[0027] 1. By installing a fixed-point spraying mechanism on the back of the cabinet, the fixed-point spraying mechanism is composed of structures such as a transverse movement assembly and a nozzle assembly, and by setting a channel facing the nozzle assembly on the back of the cabinet, a blocking mechanism is provided at the channel to ensure the sealing of the cabinet. When the temperature in a certain cabinet is abnormal, close the first control valve and open the second control valve. The transverse movement assembly can drive the nozzle assembly to move towards the channel of the abnormal cabinet. Then, the impact frame on the nozzle assembly pushes open the blocking block and makes each group of nozzles enter the cabinet through the channel. Subsequently, multiple groups of nozzles can be controlled to open outwards in an umbrella shape. Then, open the solenoid valve so that the fire extinguishing agent in the fire extinguishing tank rushes into the transfer cylinder through the fixed pipeline and the delivery hose, and is sprayed out from the nozzle by the corrugated expansion pipe. The opened groups of nozzles can greatly expand the spraying range of the fire extinguishing agent, and then ensure that the high-temperature or burning electrical components in the cabinet can be effectively suppressed;

[0028] In this fixed-point operation mode, timely fire extinguishing treatment of the high-temperature fire source position can be achieved efficiently and accurately, which not only greatly improves the fire extinguishing efficiency, but also has strong pertinence, effectively avoids a large amount of waste of the stored fire extinguishing agent, can ensure subsequent continuous fire extinguishing treatment, and then greatly improves the fire prevention effect.

[0029] 2. When a large - area fire is detected inside the ring - main unit, the first control valve and the second control valve can be simultaneously opened to switch to the full - scale working mode. That is, the fire extinguishing agent in the fire - extinguishing tank is respectively flushed into the U - shaped pipe and the conveying pipe, and both spray the fire - extinguishing agent simultaneously for fire - fighting operations, further enhancing the fire - prevention protection effect of the electrical ring - main unit.

[0030] 3. By setting the branch pipe, the third control valve and the air pump, when the space - environment temperature inside the ring - main unit is detected to be relatively 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 the movement of each group of spray pipes inside the ring - main unit can be controlled to move back and forth and unfold. Through the suction force generated by the operation of the air pump, via the U - shaped pipe and the conveying pipe, under the action of the uniformly distributed nozzles in multiple groups and the moving spray pipes in multiple groups, the high - temperature hot air inside the ring - main unit can be sucked out. While the high - temperature hot air is pumped out, fresh air is introduced from the heat - dissipation slots, thereby accelerating the replacement efficiency of the internal and external air, further improving the heat - dissipation function, avoiding the continuous rise of the internal temperature, and better achieving the fire - prevention effect.

[0031] 4. When the bottom end of the fixed pipe is inserted and installed in the connecting pipe of the fire - extinguishing tank, by setting structures such as a connecting disk, a fixed disk, a positioning ring, a clamping ring and a silica - gel pad between them, as the fixed pipe and the connecting pipe slide and are inserted, the connecting disk can press the positioning ring to slide on the fixed pipe and lean towards the fixed disk. Thus, while the positioning ring is tightened between the fixed disk and the connecting disk, the clamping rings on both sides can drive the silica - gel pad to clamp and wrap around the outer walls of the connecting disk and the fixed disk;

[0032] At the same time, a first snap ring, an annular slot and a second snap ring that can be inserted and matched with each other are arranged between the connecting disk, the positioning ring and the fixed disk, which can further strengthen the tightness between the fixed disk and the connecting disk. With the joint cooperation of this structure, not only can the stability of the installation of the fire - extinguishing tank be greatly enhanced, but also the sealing of the interface can be effectively achieved, and thus the assembly and replacement of the fire - extinguishing tank can be realized safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the internal structure of the fire - prevention box and the ring - main unit body of the present invention;

[0036] Figure 3Schematic diagram of the back of the ring main unit body of the present invention;

[0037] Figure 4 Schematic diagram of the separation of the ring main unit body of the present invention from the fixed frame;

[0038] Figure 5 One of the partial cross-sectional views of the ring main unit body of the present invention;

[0039] Figure 6 Another partial cross-sectional view of the ring main unit body of the present invention;

[0040] Figure 7 Schematic diagram of the three-dimensional structure of the fixed frame of the present invention;

[0041] Figure 8 Schematic diagram of the internal structure of the fixed frame of the present invention;

[0042] Figure 9 Schematic diagram of the connection structure between the cabinet chamber and the plugging mechanism of the present invention;

[0043] Figure 10 Explosion diagram of the cabinet chamber and the plugging mechanism of the present invention;

[0044] Figure 11 One of the schematic diagrams of the connection structure between the transfer cylinder and the nozzle of the present invention;

[0045] Figure 12 Another schematic diagram of the connection structure between the transfer cylinder and the nozzle of the present invention;

[0046] Figure 13 One of the longitudinal cross-sectional views of the transfer cylinder and the boss of the present invention;

[0047] Figure 14 Another longitudinal cross-sectional view of the transfer cylinder and the boss of the present invention;

[0048] Figure 15 Schematic diagram of the connection structure between the transfer cylinder and the impact frame of the present invention;

[0049] Figure 16 Schematic diagram of the installation structure of the fire extinguishing tank in the fire protection box of the present invention;

[0050] Figure 17 Schematic diagram of the structure when the fire extinguishing tank is separated from the fire protection box of the present invention;

[0051] Figure 18 Schematic diagram of the structure when the fixed pipe is separated from the connecting pipe of the present invention;

[0052] Figure 19 Longitudinal cross-sectional view of the fixed pipe and the connecting pipe of the present invention;

[0053] Figure 20 of the present inventionFigure 1 Enlarged view of part A

[0054] Explanation of reference numerals:

[0055] 1. Ring main unit; 2. Cabinet door; 3. Fireproof box; 4. Protection board; 5. Fixed pipe; 6. U-shaped pipe; 7. Nozzle; 8. Fiber optic temperature sensor; 9. Fire detector; 10. First control valve; 11. Fire extinguishing tank; 12. Card seat; 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. Driving motor; 23. Lead screw; 24. Movable block; 25. Connecting arm; 26. Spray pipe; 27. Corrugated expansion pipe; 28. Impact frame; 29. Opening; 30. Fixed frame; 31. Fixed plate; 32. Threaded rod; 33. Driving motor; 34. Movable column; 35. Built-in temperature sensor; 36. Channel; 37. Support ring; 38. First spring; 39. Plugging block; 40. L-shaped plate; 41. Limit rod; 42. Cabinet compartment; 43. Fixed disk; 44. Guide frame; 45. Connecting handle; 46. Support rod; 47. Movable ring; 48. Clamping ring; 49. Silicone pad; 50. Second spring; 51. Connecting rod; 52. Positioning ring; 53. Connecting disk; 54. Annular card slot; 55. First snap ring; 56. Second snap ring; 57. Heat dissipation slot; 58. Arc-shaped baffle; 59. Branch pipe; 60. Third control valve; 61. Air pump. Detailed implementation mode

[0056] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0057] The present invention provides a fireproof electrical ring main unit as shown in Figures 1 - 20 and includes:

[0058] A ring main unit 1, a cabinet door 2 is arranged on the side wall of the ring main unit 1, and a plurality of cabinet compartments 42 are arranged inside the ring main unit 1;

[0059] A fireproof box 3 is arranged on one side of the ring main unit 1, and a liftable card seat 12 is arranged at the bottom end inside 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 end of the fire extinguishing tank 11. A solenoid valve 15 is arranged on the connecting pipe 14;

[0060] A hydraulic cylinder 13 is installed at the bottom end inside the fireproof box 3. The top end of the hydraulic cylinder 13 is connected to the card seat 12. A groove is formed at the top end of the card seat 12, and the bottom end of the fire extinguishing tank 11 can be inserted and matched in the groove;

[0061] In use, the fireproof box 3 can be opened to embed the fire extinguishing tank 11 on the card seat 12. The hydraulic cylinder 13 is used to drive the card seat 12 to rise, so that the card seat 12 drives the fire extinguishing tank 11 to rise. Then, the bottom end of the fixed pipe 5 is inserted and fitted into the connecting pipe 14, so that the fire extinguishing tank 11 can be butt - jointed and installed with the fixed pipe 5. Conversely, the fire extinguishing tank 11 can be removed, and thus the fire extinguishing tank 11 can be replaced regularly to ensure safe use.

[0062] A fire detector 9 is installed on the inner 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. An internal temperature sensor 35 is arranged inside the cabinet chamber 42. Based on this, the optical - fiber temperature sensor 8 can be used to detect the temperature of the overall space environment inside the ring - main unit 1, and the internal temperature sensor 35 can be used to detect the temperature of each cabinet chamber 42 respectively. The fire detector 9 can be further used to detect whether a fire occurs inside the ring - main unit 1.

[0063] The pipe assembly includes a fixed pipe 5 installed on one side of the top end of the ring - main unit 1, above the fireproof box 3. One end of the fixed pipe 5 extending into the fireproof box 3 is connected to the connecting pipe 14. One end of the fixed pipe 5 extending into the ring - main unit 1 is provided with a U - shaped pipe 6 above the cabinet chamber 42. The U - shaped pipe 6 is fixedly connected to the ring - main unit 1 through a clamp. A plurality of nozzles 7 are connected to the bottom side of the U - shaped pipe 6. A first control valve 10 is provided at one end of the fixed pipe 5 close to the U - shaped pipe 6.

[0064] Specifically, as shown in Figure 16 、 Figure 17 、 Figure 18 and Figure 19 , a connecting disc 53 is arranged at the top end of the connecting pipe 14. A fixed disc 43 is fixed at the bottom end of the fixed pipe 5, facing the connecting disc 53. An active ring 47 and a positioning ring 52 are symmetrically sleeved on the upper and lower sides of the bottom end of the fixed pipe 5, on the outer wall of the connecting rod 51 between the active ring 47 and the fixed disc 43. The two ends of the fixed disc 43 are symmetrically penetrated by connecting rods 51. The two ends of the connecting rod 51 are respectively fixedly connected to the active ring 47 and the positioning ring 52. A second spring 50 is arranged on the outer wall of the connecting rod 51 between the active ring 47 and the fixed disc 43. Guide frames 44 are symmetrically connected to both sides of the fixed disc 43. Connecting handles 45 are sleeved on both guide frames 44. A support rod 46 is rotatably connected between the top end of the connecting handle 45 and the active ring 47 through a rotating shaft. A clamping ring 48 facing the fixed disc 43 and the positioning ring 52 is fixed inside the connecting handle 45. A silica gel pad 49 is arranged inside the clamping ring 48. One end of the fixed pipe 5 close to the fixed disc 43 can be inserted and fitted into the connecting pipe 14.

[0065] A first snap ring 55 is provided on the top side of the connection plate 53, a second snap ring 56 is provided on the bottom side of the fixed plate 43, annular card slots 54 are formed 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 card slots 54.

[0066] When installing the fire extinguishing tank 11, as the card seat 12 drives the fire extinguishing tank 11 to rise, the connecting pipe 14 on the fire extinguishing tank 11 can drive the connection plate 53 to press against the fixed plate 43. Then, the bottom end of the fixed pipe 5 is inserted into the connecting pipe 14, and the connection plate 53 squeezes the positioning ring 52 to slide on the fixed pipe 5. 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. After that, 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. Thus, the connecting handle 45 can drive the clamping ring 48 to lean against the fixed plate 43 and the connection plate 53. When the positioning ring 52 is pressed tightly between the fixed plate 43 and the connection plate 53, the two clamping rings 48 drive the silica gel pad 49 to clamp and wrap between the outer walls of the connection plate 53 and the fixed plate 43;

[0067] At the same time, the first snap ring 55 on the top side of the connection plate 53 can be embedded into the annular card slot 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 into the annular card slot 54 on the top side of the fixed plate 43. Thus, the tightness between the fixed plate 43 and the connection plate 53 can be further strengthened. With the joint cooperation of this structure, not only the stability during connection can be greatly enhanced, but also effective sealing can be achieved. Furthermore, the assembly and replacement of the fire extinguishing tank 11 can be realized safely and stably.

[0068] A fixed-point spraying mechanism, the fixed-point spraying mechanism includes a conveying pipe 16 provided on 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 conveying pipe 16 close to the fixed pipe 5, and a conveying hose 18 is installed at the other end of the conveying pipe 16. The bottom end of the conveying hose 18 is connected to an adjustable nozzle assembly. A transverse movement assembly is installed on the back of the ring main unit 1, and the transverse movement assembly is used to drive the nozzle assembly to move horizontally;

[0069] Specifically, it consists of Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 and Figure 8As shown in the figure, the lateral movement component includes an opening 29 formed in the back of the ring main unit 1. A fixed frame 30 is installed at the outer end of the opening 29. Fixed plates 31 are symmetrically connected to both sides of the fixed frame 30, and the fixed plates 31 are fixedly connected to the ring main unit 1 by bolts. A threaded rod 32 is rotatably connected to the inside of the fixed frame 30 through a bearing. A movable column 34 is screwed onto the outer wall of the threaded rod 32. A convex strip is provided on the side wall of the movable column 34, and a chute matching the convex strip is provided inside the fixed frame 30. A driving motor 33 is fixed at one end of the fixed frame 30, and the output end of the driving motor 33 is connected to the threaded rod 32.

[0070] Channels 36 facing the nozzle assembly are formed in the backs of multiple compartments 42, and a blocking mechanism is provided on the channels 36.

[0071] By connecting the fixed frame 30 to the opening 29 with the cooperation of the fixed plate 31 and bolts, the lateral movement component can be installed on the back of the ring main unit 1. During use, the driving motor 33 can be used to drive the threaded rod 32 to rotate, so that the threaded rod 32 drives the movable column 34 to move linearly inside the fixed frame 30. Then, the movable column 34 can drive the nozzle assembly to move, so as to control the nozzle assembly to move to the channels 36 on each compartment 42 respectively.

[0072] Specifically, as shown in Figure 6 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , and Figure 15 , 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 a transfer cylinder 19. Both ends of a delivery hose 18 are connected to the transfer cylinder 19 and a delivery pipe 16 through threaded joints. A boss 21 is provided on one side of the transfer cylinder 19. A driving motor 22 is installed inside the boss 21. The output end of the driving motor 22 extends outside the boss 21 and is connected to a lead screw 23. A collision frame 28 facing the channel 36 is fixed outside the lead screw 23 on one side of the transfer cylinder 19;

[0073] A plurality of nozzles 26 are annularly arranged on the side wall of the transfer cylinder 19 between the transfer cylinder 19 and the collision frame 28 through a rotating shaft. A corrugated expansion pipe 27 is connected between the nozzle 26 and the transfer cylinder 19. A movable block 24 is screwed onto the outer wall of the lead screw 23. Connecting arms 25 are rotatably connected between the movable block 24 and the plurality of nozzles 26 through a rotating shaft.

[0074] Specifically, as shown in Figure 5 , Figure 6 , Figure 9 , and Figure 10As shown in the figure, the plugging mechanism includes a support ring 37 fixedly connected to the inner side of the cabinet chamber 42 facing the channel 36 by bolts. A plugging block 39 is installed inside the support ring 37. One end of the plugging block 39 is inserted and fitted into the channel 36, and a plurality of L-shaped plates 40 are arranged in an annular array at the other end of the plugging block 39. 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. One end of the limiting rod 41 is fixedly connected to the support ring 37. Based on this, the impact frame 28 can push the plugging block 39 embedded in the channel 36 to move, so that the plugging block 39 pulls the first spring 38 to elongate through the L-shaped plate 40, and under the support and limitation of the limiting rod 41, the plugging block 39 can be pushed out of the channel 36 along a straight line. On the contrary, when the impact frame 28 retracts, under the rebound of each group of first springs 38, the plugging block 39 can be reset and re-embedded into the channel 36, thus realizing the safe closure of the cabinet chamber 42.

[0075] By separately arranging built-in temperature sensors 35 in each cabinet chamber 42, the temperature of each cabinet chamber 42 can be detected separately. And when the temperature in a certain cabinet chamber 42 is abnormal, the abnormal temperature data can be transmitted to the control system. The control system can start the horizontal movement component to work, so that the movable column 34 on the horizontal movement component drives the nozzle assembly to move towards the position of the channel 36 on the back of the abnormal cabinet chamber 42. At the same time, the first control valve 10 is closed, and the second control valve 17 is opened. Then the nozzle assembly works, so that the cylinder 20 drives the rotating cylinder 19 to move. The rotating cylinder 19 can drive the impact frame 28 to push the plugging block 39 embedded in the channel 36 to move, so that the plugging block 39 pulls the first spring 38 to elongate through the L-shaped plate 40, and under the support and limitation of the limiting rod 41, the plugging block 39 can be pushed out of the channel 36 along a straight line. At the same time, each group of nozzles 26 between the rotating cylinder 19 and the impact frame 28 pass through the channel 36 and enter the cabinet chamber 42;

[0076] By starting the drive motor 22, the drive motor 22 can drive the lead screw 23 to rotate. Then the lead screw 23 drives the movable block 24 to move, so that the movable block 24 drives each connecting arm 25 on the side wall to rotate simultaneously. Then the connecting arm 25 can drive the nozzle 26 to rotate on the rotating cylinder 19, so as to control a plurality of groups of nozzles 26 to open outwards in an umbrella shape at the same time. Then the solenoid valve 15 is opened so that the fire extinguishing agent in the fire extinguishing tank 11 enters the conveying pipeline 16 through the fixed pipeline 5, then enters the rotating cylinder 19 through the conveying hose 18, and then is sprayed out from the nozzle 26 through the corrugated expansion pipe 27. The opened groups of nozzles 26 can greatly expand the spraying range of the fire extinguishing agent, so as to ensure that the high-temperature or burning electrical components in the cabinet chamber 42 can be effectively suppressed;

[0077] In summary, in the above working mode of fixed-point operation, the timely fire extinguishing treatment of the high-temperature fire source can be efficiently and accurately achieved, which not only greatly improves the fire extinguishing efficiency, but also has strong pertinence, effectively avoids the large waste of stored fire extinguishing agent, and can ensure the subsequent continuous fire extinguishing treatment, thus greatly improving the fire prevention effect.

[0078] Moreover, once the optical fiber temperature sensor 8 and the fire detector 9 detect a large-area fire in the ring main unit 1, the first control valve 10 and the second control valve 17 can be simultaneously opened to switch to the full working mode, so that the fire extinguishing agents in the fire extinguishing tanks 11 are respectively flushed into the U-shaped pipe 6 and the conveying pipe 16, and both spray the fire extinguishing agent for fire extinguishing operations at the same time, further enhancing the fire protection effect of the electrical ring main unit.

[0079] Specifically, as shown in Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 20 , the pipeline assembly further includes a branch pipe 59 provided at one end of the fixed pipe 5 near the upper part 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. Multiple groups of heat dissipation grooves 57 are provided on the side wall of the cabinet door 2.

[0080] A plurality of arc-shaped baffles 58 facing the heat dissipation grooves 57 are provided on the outer side of the cabinet door 2, and protective plates 4 are provided on the tops of the ring main unit 1 and the fireproof box 3. 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.

[0081] By providing the branch pipe 59, when the optical fiber temperature sensor 8 detects that the space environment temperature in the ring main unit 1 is relatively high but does not exceed the red line value of the set fire extinguishing temperature, the third control valve 60 can be activated to open the branch pipe 59, and at the same time, the first control valve 10 and the second control valve 17 are opened, and the movable column 34 can be controlled to drive the nozzle assembly to move back and forth in the ring main unit 1, and the nozzles 26 of each group on the nozzle assembly can be unfolded outward. By the suction generated by the operation of the air pump 61, through the U-shaped pipe 6 and the conveying pipe 16, under the action of the multiple groups of uniformly distributed nozzles 7 and the multiple groups of reciprocating nozzles 26, the high-temperature hot air in the ring main unit 1 can be sucked, and while the high-temperature hot air is pumped out, the fresh air from the outside can enter the inside of the ring main unit 1 through the multiple groups of heat dissipation grooves 57, thereby accelerating the replacement efficiency of the internal and external air, further improving the heat dissipation function, avoiding the continuous rise of the internal temperature, and being able to better play the role of fire prevention.

[0082] Referring to Figures 1 - 20 shown, an assembly method of a fireproof electrical ring main unit is characterized by including the following steps:

[0083] S1. Connect the fixed frame 30 to the opening 29 through the fixing plate 31 and bolts, and then the transverse movement assembly can be installed on the back of the ring main unit 1.

[0084] S2. Install the nozzle assembly on the movable column 34 of the transverse movement assembly through bolts, and then install the delivery hose 18 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 1.

[0085] S3. Fix and connect the support ring 37 to the channel 36 inside the cabinet chamber 42 through bolts, so that the plugging block 39 on the support ring 37 is inserted into the channel 36, and then the plugging mechanism can be installed at the channel 36 to ensure the sealing of the cabinet chamber 42.

[0086] S4. Open the fireproof box 3, embed the fire extinguishing tank 11 on the card seat 12, drive the card seat 12 to rise through the hydraulic cylinder 13, so that the card seat 12 drives the fire extinguishing tank 11 to rise, and then the bottom end of the fixed pipe 5 is inserted and fitted into the connecting pipe 14. At the same time, the connecting disc 53 and the fixed disc 43 are tightly clamped on both sides of the positioning ring 52, and the two clamping rings 48 can drive the silica gel pad 49 to clamp and wrap around the outside between the connecting disc 53 and the fixed disc 43, thus ensuring the tightness and sealing of the installation of the fire extinguishing tank 11 and the fixed pipe 5 for safe use.

[0087] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope 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); The nozzle assembly comprises a cylinder (20) fixedly connected to the transverse movement assembly, the output end of the cylinder (20) is connected to a central rotating cylinder (19), both ends of the delivery hose (18) are connected to the central rotating cylinder (19) and the delivery pipe (16) through 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.

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 interior 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 extinguisher tank (11) is 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). A second spring (50), guide frames (44) are symmetrically connected to both sides of the fixed disk (43), and connecting handles (45) are sleeved on the two guide frames (44). A support rod (46) is rotatably connected between the top of the connecting handle (45) and the movable ring (47) via a rotating shaft, and a clamping ring (48) facing the fixed disk (43) and the positioning ring (52) is fixed on the inner side of the connecting handle (45), and a silicone pad (49) is arranged on the inner side of the clamping ring (48). The end of the fixed pipe (5) close to the fixed disk (43) is 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. 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).

7. 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).

8. A fireproof electrical ring main unit according to claim 7, 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).

9. A method for assembling a fireproof electrical ring main unit according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Connecting the fixing frame (30) to the opening (29) by means of the fixing plate (31) and bolts, that is, installing the transverse movement assembly on the back of the ring main unit body (1); S2, mounting the spray pipe assembly on the movable column (34) on the transverse movement assembly by means of bolts, and then mounting the delivery hose (18) between the central rotating cylinder (19) and the delivery pipe (16) by means of a threaded joint, thereby assembling the fixed-point spraying mechanism in the ring main unit body (1); S3, fixing the support ring (37) 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 installing the blocking mechanism 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) 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.

Images