Fireproof and explosion-proof fire isolation equipment for power plant high-voltage cable terminal

Abstract

The application discloses a fireproof and explosion-proof fire-fighting isolation equipment for a power plant high-voltage cable terminal and relates to the technical field of fire-fighting isolation equipment. The fire-fighting isolation equipment comprises an isolation seat and a fire column, the fire column is provided in two groups and is installed on the top of the isolation seat, the two groups of fire columns are connected through a support frame, a powder box is arranged at the center of the top of the isolation seat, a sand storage box is arranged in the fire column, and the powder box is connected with the center rotating disc through a transmission assembly. In the application, the fire-fighting powder in the center rotating disc is sprayed out from the fire-fighting nozzle through the rotating centrifugal mode, the spraying range of the fire-fighting powder is enlarged, the fireproof and explosion-proof effect is improved, the sand in the sand storage box is moved out and sent to the fire-fighting sand opening, the two are matched, the fire-fighting isolation of the power plant high-voltage cable terminal is more timely and convenient, and the loss of the power plant is effectively reduced.

Description

Technical Field

[0001] This invention relates to the technical field of fire isolation equipment, specifically fire isolation equipment for fire and explosion protection of high-voltage cable terminals in power plants. Background Technology

[0002] High-voltage cables are a type of power cable, referring to power cables used to transmit power between 1kV and 1000kV. They are mostly used in power plants (including energy storage power plants) for power transmission and management. When power plants control the transmission of high-voltage electricity, they generally complete the unified allocation through power plant cable terminals set up inside the power plant. At the same time, because the energy storage inside the power plant cable terminals is huge, they need to be used in conjunction with special fire isolation equipment for fire prevention and explosion protection operations.

[0003] A Chinese patent application with authorization publication number CN114210008B discloses a fire extinguishing device for fire protection engineering, including a base, a liftable lifting plate mounted on the top of the base, an inner toothed ring fixed to the top of the lifting plate by a fixing rod, and multiple water spray nozzles arranged in a ring on the outer wall of the inner toothed ring. A powder spraying box for holding flame-retardant powder is fixed to the top of the lifting plate by a support rod, and a powder spraying port is opened on the outer wall of the powder spraying box near the inner toothed ring. The device also includes an air-filling component for inflating the powder spraying box. This invention, through the dual combination of water and flame-retardant powder, can further improve the speed and efficiency of fire extinguishing. Furthermore, after mixing with water, the powder forms a paste-like insulating layer on the surface of the burning material, further isolating oxygen and effectively preventing reignition of the burning material, thus avoiding the risk of secondary fires.

[0004] However, this fire-fighting equipment has the following drawbacks in practical use:

[0005] 1. Existing fire-fighting equipment generally uses fire dust and sand to extinguish and prevent explosions when fire isolation is carried out at the mid-section of power plant cables. However, when an emergency (mainly a fire) actually occurs at the mid-section of power plant cables, the spraying of fire dust and the fire extinguishing of sand require a large number of firefighters to operate separately, which takes a long time and makes it difficult to complete the fire-fighting operation at the mid-section of power plant cables within the optimal time for extinguishing the emergency (mainly a fire). At the same time, the spraying range of fire dust and sand is relatively limited, making it difficult to deal with emergencies (mainly fires) at the mid-section of power plant cables in different locations in a timely manner.

[0006] 2. When existing fire-fighting equipment is used to protect the middle section of power plant cables, isolation equipment such as isolation nets is generally used to achieve isolation operations, reducing the probability of outside personnel approaching the middle section of power plant cables. However, in the event of a fire or other situation that requires fire fighting, it is inconvenient for external fire rescue personnel to enter the inside of the isolation net, affecting the timeliness of rescue. Summary of the Invention

[0007] The purpose of this invention is to provide fire-resistant and explosion-proof isolation equipment for high-voltage cable terminals in power plants, so as to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] The fire-fighting isolation equipment for high-voltage cable terminals in power plants provided by this invention includes an isolation base and fire-fighting columns surrounding the high-voltage cable terminal. Two sets of fire-fighting columns are provided, both installed on top of the isolation base. The two sets of fire-fighting columns are connected by a support frame. A powder box is located at the center of the top of the isolation base. A sand storage box is located inside each fire-fighting column. The powder box is connected to a central turntable via a transmission assembly. Several fire nozzles are installed on the side of the central turntable. Feeding fire-fighting mechanisms are installed on both the left and right sides of the central turntable. The feeding fire-fighting mechanisms are driven by a drive motor and further include:

[0010] A toothed rotating assembly is mounted on the top of the support frame. The toothed rotating assembly is driven by a drive motor. Two sets of toothed rotating assemblies are provided and are symmetrically arranged relative to the center of the central turntable.

[0011] A transmission feeding assembly is installed on the side of the toothed rotating assembly and driven by the toothed rotating assembly. The bottom of the transmission feeding assembly is installed inside the fire column and extends into the interior of the sand storage tank.

[0012] The outside of the central turntable is also equipped with stabilizing components. Two sets of stabilizing components are provided, and both are installed on the top of the support frame. The top of the fire column is also provided with a fire sand opening, and a sand-lifting component is provided on the side of the fire sand opening.

[0013] As a preferred embodiment of the present invention, the interior of the central turntable is hollow, the fire nozzles are arranged in a ring at equal intervals, the fire nozzles are obliquely arranged and facing one side of the outer wall of the central turntable, and a connecting rod is also installed on the outside of the fire nozzles, the connecting rod being fixed to the protruding part at the center of the side of the central turntable.

[0014] As a preferred embodiment of the present invention, the transmission assembly includes a pump body, which is installed on the top of the powder box and connected to the powder box. A transmission pipe is provided at the outlet of the pump body, and the transmission pipe passes through a central frame. The central frame is bolted to the side of the support frame and the isolation seat. A central connecting component is installed on the top of the transmission pipe and is rotatably connected to the center of the back of the central turntable.

[0015] As a preferred embodiment of the present invention, the central frame has a "Z" shape and is provided in two sets, the central connecting component and the isolation seat form a "+" shape, and the central connecting component is connected to the central turntable.

[0016] As a preferred embodiment of the present invention, the tooth rotation assembly includes:

[0017] A drive shaft is connected to the output end of the drive motor and rotatably connected to the inner side of the base. The base is fixedly mounted on the top of the support frame, and the drive motor is mounted on the outer side of the base.

[0018] A first belt is mounted on the outside of the drive shaft via a pulley, and a rotating shaft is connected to the inside of the first belt via a pulley. The rotating shaft is movably connected to the inside of the support frame.

[0019] A first gear is mounted and fixed on the side of the rotating shaft, and a second gear is meshed and connected to the side of the first gear. The second gear is mounted and fixed on the outside of the central turntable.

[0020] As a preferred embodiment of the present invention, a transmission feeding assembly is further provided outside the drive shaft, wherein the gear ratio of the first gear and the second gear is 1:12, and the second gear is located between two sets of stabilizing components.

[0021] As a preferred embodiment of the present invention, the transmission feeding assembly includes:

[0022] The third gear is fixedly mounted on the bottom of the drive shaft, and the top of the third gear is meshed with a fourth gear. A connecting shaft is installed at the center of the inside of the fourth gear.

[0023] The coupling is movably connected inside the positioning block, and the positioning block is installed and fixed on the side of the fire column;

[0024] The second belt is connected to the top of the coupling shaft via a pulley. A spiral feeding roller is connected to the inner side of the end of the second belt away from the coupling shaft via a pulley. The spiral feeding roller is installed inside the fire column and extends into the sand storage tank.

[0025] As a preferred embodiment of the present invention, the third gear and the fourth gear are arranged perpendicularly to each other, the spiral feeding roller is movably connected to the central part inside the fire column, and a fire sand inlet is provided on the side of the top of the spiral feeding roller.

[0026] As a preferred embodiment of the present invention, the stabilizing component includes a stabilizing part, which is bolted to the top of the support frame. The central portion of the stabilizing part is annular, and a central turntable is movably connected to the inner side of the annular stabilizing part. A roller seat is mounted and fixed to the outer side of the central turntable, and a plurality of rollers are arranged in annularly at equal intervals. A sliding wheel is movably connected to the inner side of the roller seat, and the sliding wheel is movably connected to an annular groove opened inside the stabilizing part.

[0027] As a preferred embodiment of the present invention, the sand-throwing assembly includes a sand-throwing base, which is installed on the side of the fire sand inlet. A sand-throwing blade is rotatably connected to the top of the sand-throwing base, and the shaft end of the sand-throwing blade is connected to the output end of a servo motor. The interior of the sand-throwing base is configured as a downwardly concave arc shape.

[0028] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0029] 1. The fire isolation equipment for fire prevention and explosion protection of high-voltage cable terminals in this power plant can, in the event of an emergency (mainly a fire) at the high-voltage cable terminal, rotate by a drive motor driving the drive shaft, first belt, rotating shaft, first gear, and second gear connected to its output end. This causes the central turntable installed inside the second gear to rotate, and the fire powder moved into the central turntable is sprayed out from the fire nozzle through centrifugal rotation, expanding the spray range of the fire powder and improving the fire prevention and explosion protection effect. At the same time, when the drive shaft rotates, it can simultaneously drive the third gear, fourth gear, connecting shaft, second belt, and spiral feeding roller to operate, removing the sand located inside the sand storage box and sending it to the fire sand outlet, which is convenient for the subsequent sand lifting operation by the sand lifting blades. The combination of the above two makes the fire isolation of the high-voltage cable terminal of the power plant more timely and convenient, and can effectively reduce the losses of the power plant.

[0030] 2. The fire isolation equipment for fire prevention and explosion protection of the high-voltage cable terminal of the power plant can install several sets of isolation seats and fire columns on the outside of the high-voltage cable terminal when fire isolation is carried out on the high-voltage cable terminal. The isolation of the high-voltage cable terminal is completed by the isolation seats and fire columns. At the same time, the sand storage box inside the fire column and the powder box on the top of the isolation seat can be transferred to the sand-raising seat and the interior of the central turntable through the spiral feeding roller and the transmission pipe, respectively, to realize the sand-raising and fire-fighting powder spraying operation, which plays a role in fire prevention and explosion protection of the high-voltage cable terminal of the power plant. Furthermore, the sand and fire-fighting powder spraying positions are arranged in a ring, which can promptly deal with the danger (mainly fire) that occurs in different locations.

[0031] 3. The fire isolation equipment for fire prevention and explosion protection of high-voltage cable terminals in this power plant rotates on a central turntable to complete the spraying operation of adsorbed powder. The rotation of the central turntable is achieved through the setting of its external roller seats and sliding wheels. The rotation is carried out inside the stable components outside the central turntable. The sliding wheels ensure the stability of the central turntable during rotation, thereby ensuring the relative stability of the spray trajectory when the fire powder is sprayed through the fire nozzles. This enables targeted fire extinguishing operations. Furthermore, the fire nozzles are arranged in a ring at equal intervals, resulting in high spraying efficiency for the fire powder, i.e., high efficiency in fire extinguishing.

[0032] 4. The fire-resistant and explosion-proof isolation equipment for the high-voltage cable terminals of this power plant, when using sand-lifting blades to lift sand that has moved into the sand-lifting base, has a downward-concave arc-shaped bottom that can be used in conjunction with the fire-fighting sand inlet to store a larger amount of sand. At the same time, when the sand is lifted out by rotating the sand-lifting blades, the amount of sand lifted out each time will also be greater, making it more effective and faster in extinguishing emergencies (mainly fires). Attached Figure Description

[0033] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0034] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0035] Figure 1 This is a schematic diagram of the overall structure of a set of devices according to the present invention;

[0036] Figure 2 This is a schematic diagram of the overall side view of the present invention;

[0037] Figure 3 This is a schematic diagram of the overall front view of the present invention;

[0038] Figure 4 This is a top view of the overall structure of the invention;

[0039] Figure 5 This is a schematic diagram of the connection between the transmission component and the feeding fire-fighting mechanism of the present invention;

[0040] Figure 6This is a schematic diagram of the connection between the transmission component and the drive feeding component of the present invention;

[0041] Figure 7 This is a schematic diagram of the connection between the powder box and the central turntable of the present invention;

[0042] Figure 8 This is a schematic diagram of the connection between the central turntable and the feeding and fire-fighting mechanism of the present invention;

[0043] Figure 9 This is a schematic diagram of the connection between the central turntable and the stabilizing component of the present invention;

[0044] Figure 10 This is a structural schematic diagram of the fire-fighting column of the present invention;

[0045] In the picture:

[0046] 10. Isolation seat;

[0047] 20. Fire-fighting column; 20i. Support frame; 20a. Fire-fighting sand inlet;

[0048] 30. Powder box;

[0049] 40. Sand storage box;

[0050] 50. Transmission assembly; 50a. Central turntable; 50b. Fire nozzle; 50c. Connecting rod; 501. Pump body; 502. Transmission pipeline; 502i. Central frame; 503. Central connecting component;

[0051] 60. Feeding and fire-fighting mechanism; 60i. Drive motor;

[0052] 70. Gear rotation assembly; 701. Drive shaft; 702. Base; 703. First belt; 704. Rotating shaft; 705. First gear; 706. Second gear;

[0053] 80. Transmission feeding assembly; 801. Third gear; 802. Fourth gear; 803. Coupling; 803i. Positioning block; 804. Second belt; 805. Spiral feed roller;

[0054] 90. Stabilizing component; 901. Stabilizing part; 902. Roller seat; 903. Pulley;

[0055] 100. Sand-blowing assembly; 1001. Sand-blowing base; 1002. Sand-blowing blades; 1003. Servo motor. Detailed Implementation

[0056] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0057] Please see Figure 1 - Figure 10 Fire isolation equipment for fire and explosion protection of high-voltage cable terminals in power plants includes an isolation seat 10 and fire columns 20 surrounding the high-voltage cable terminals. Two sets of fire columns 20 are installed on top of the isolation seat 10, connected by a support frame 20i. A powder box 30 is located at the center of the top of the isolation seat 10. A sand storage box 40 is located inside the fire columns 20. The powder box 30 is connected to a central turntable 50a via a transmission assembly 50. Several fire nozzles 50b are installed on the side of the central turntable 50a. Feeding fire-fighting mechanisms 60 are installed on both sides of the central turntable 50a, driven by a drive motor 60i. The feeding fire-fighting mechanism 60 also includes a toothed rotating assembly 7. 0. The toothed rotating assembly 70 is installed on the top of the support frame 20i. The toothed rotating assembly 70 is driven by the drive motor 60i. Two sets of toothed rotating assemblies 70 are provided and are symmetrically arranged relative to the central turntable 50a. The transmission feeding assembly 80 is installed on the side of the toothed rotating assembly 70 and is driven by the toothed rotating assembly 70. The bottom of the transmission feeding assembly 80 is installed inside the fire column 20 and extends into the sand storage box 40. A stabilizing assembly 90 is also provided on the outside of the central turntable 50a. Two sets of stabilizing assemblies 90 are provided and are installed on the top of the support frame 20i. A fire sand opening 20a is also opened on the top of the fire column 20. A sand-lifting assembly 100 is provided on the side of the fire sand opening 20a.

[0058] The working principle described above is as follows: When fire protection and isolation are carried out on the high-voltage cable terminals of a power plant, several sets of isolation seats 10 and fire-fighting columns 20 can be set up around the outside of the high-voltage cable terminals. The isolation seats 10 and fire-fighting columns 20 are used to isolate external personnel, improving safety. At the same time, when a dangerous situation (mainly fire) occurs inside the high-voltage cable terminals, the temperature sensors and smoke sensors inside the high-voltage cable terminals can detect the occurrence of the dangerous situation (mainly fire) and transmit the data to the corresponding control terminal. Then, the control terminal will automatically start the transmission component 50 to move the fire-fighting powder stored in the powder box 30 to the inside of the central turntable 50a, and finally spray it out from the fire-fighting nozzle 50b connected to the central turntable 50a. When the fire-fighting powder is sprayed, the control terminal can start the drive motor 60i to drive the toothed rotating assembly 70 to operate. This causes the central turntable 50a installed inside the toothed rotating assembly 70 to rotate, allowing the sprayed fire-fighting powder to expand its spray range under the action of centrifugal force. At the same time, the toothed rotating assembly 70 can be started to operate the transmission feeding assembly 80 to move the sand inside the sand storage box 40 to the side of the sand-lifting assembly 100 and then lift it out through the sand-lifting assembly 100. That is, the spraying of fire-fighting powder and the lifting of sand can be carried out simultaneously, so as to extinguish the danger (mainly fire) that occurs at the high-voltage cable terminal of the power plant in a timely manner and reduce the probability of causing huge damage.

[0059] For details, please refer to the following: Figure 7 and Figure 9 In this embodiment, the interior of the central turntable 50a is hollow, and the fire nozzles 50b are arranged in a ring at equal intervals. The fire nozzles 50b are arranged obliquely and are positioned towards the outer wall of the central turntable 50a, which can increase the range of fire powder spraying.

[0060] Meanwhile, in this embodiment, a connecting rod 50c is also installed on the outside of the fire nozzle 50b. The connecting rod 50c is installed and fixed on the protruding part at the center of the side of the central turntable 50a, which can ensure that the fire nozzle 50b is supported when it is rotating.

[0061] The fire-fighting isolation device for fireproof and explosion-proof power plant high-voltage cable terminals of the present invention allows fire-fighting powder to enter the interior of the central turntable 50a and, through the centrifugal force generated by the rotation, better enter the interior of the fire nozzle 50b, and finally be sprayed out through the fire nozzle 50b to realize the spraying operation of fire-fighting powder.

[0062] For details, please refer to the following: Figure 5 , Figure 6 and Figure 7The transmission assembly 50 includes a pump body 501, which is mounted on the top of the powder box 30 and connected to the powder box 30. A transmission pipe 502 is provided at the outlet of the pump body 501. The transmission pipe 502 passes through the central frame 502i, which is bolted to the side of the support frame 20i and the isolation seat 10. A central connecting component 503 is mounted on the top of the transmission pipe 502 and is rotatably connected to the center of the back of the central turntable 50a.

[0063] In this embodiment, the central frame 502i has a "Z" shape and is provided in two sets. The central connecting component 503 and the isolation seat 10 form a "+" shape, which can increase the contact area and size between the equipment and the ground, thereby ensuring the stability of the equipment during construction.

[0064] Meanwhile, in this embodiment, the central connecting component 503 and the central turntable 50a are connected, which can ensure that the fire-fighting powder can enter the interior of the central turntable 50a through the central connecting component 503.

[0065] The fire-fighting isolation device for fireproof and explosion-proof power plant high-voltage cable terminals of the present invention can use a pump body 501 to transport fire-fighting powder stored inside the powder box 30 through a transmission pipe 502 to the interior of the central connecting component 503, and then move it to the interior of the central turntable 50a through the central connecting component 503, thus completing the fire-fighting powder transfer operation.

[0066] For details, please refer to the following: Figure 5 , Figure 6 and Figure 8 The toothed rotating assembly 70 includes a drive shaft 701, which is connected to the output end of a drive motor 60i and rotatably connected to the inner side of a base 702. The base 702 is fixedly mounted on the top of a support frame 20i, and the drive motor 60i is mounted on the outer side of the base 702. A first belt 703 is mounted on the outer side of the drive shaft 701 via a pulley. A rotating shaft 704 is connected to the inner side of the first belt 703 via a pulley. The rotating shaft 704 is movably connected to the inner side of the support frame 20i. A first gear 705 is fixedly mounted on the side of the rotating shaft 704. A second gear 706 is meshed with the side of the first gear 705 and is fixedly mounted on the outer side of a central turntable 50a.

[0067] In this embodiment, a transmission feeding assembly 80 is also provided outside the drive shaft 701, which can ensure that the transmission feeding assembly 80 can be driven synchronously when the drive shaft 701 rotates.

[0068] Meanwhile, in this embodiment, the gear ratio of the first gear 705 and the second gear 706 is 1:12. The second gear 706 is located between the two sets of stabilizing components 90, which can ensure that the rotation of the second gear 706 will drive the inner central turntable 50a to rotate, thereby realizing the rotation of the fire nozzle 50b at the eccentric side of the central turntable 50a.

[0069] The fire-resistant and explosion-proof fire isolation device for high-voltage cable terminals in power plants of the present invention can start the drive motor 60i through the control terminal during fire rescue, thereby driving the drive shaft 701 connected to the output end of the drive motor 60i to rotate. The rotation of the drive shaft 701 will drive the first belt 703 connected to the outer side of the drive shaft 701 through the pulley to rotate, and then drive the rotating shaft 704 connected to the inner side of the first belt 703 through the pulley to rotate. At this time, the rotation of the rotating shaft 704 will drive the first gear 705 mounted on its side to rotate, thereby causing the second gear 706 meshed with the side of the first gear 705 to rotate.

[0070] For details, please refer to the following: Figure 6 , Figure 8 and Figure 10 The transmission feeding assembly 80 includes a third gear 801, which is fixedly mounted on the bottom of the drive shaft 701. A fourth gear 802 is meshed with the top of the third gear 801. A coupling 803 is installed at the center of the fourth gear 802. A second belt 804 is connected to the top of the coupling 803 via a pulley. A spiral feeding roller 805 is connected to the inner side of the end of the second belt 804 away from the coupling 803 via a pulley. The spiral feeding roller 805 is installed inside the fire column 20 and extends into the sand storage box 40.

[0071] In this embodiment, the coupling 803 is movably connected inside the positioning block 803i. The positioning block 803i is installed and fixed on the side of the fire column 20, which can ensure that when the central turntable 50a rotates to spray fire powder, the spiral feeding roller 805 can drive the sand to move to the inner top of the fire column 20.

[0072] Meanwhile, in this embodiment, the third gear 801 and the fourth gear 802 are arranged perpendicularly to each other, and the spiral feeding roller 805 is movably connected to the central part inside the fire column 20. The side of the top of the spiral feeding roller 805 is provided with a fire sand opening 20a, which can ensure that the moving sand can be moved to the side of the sand-raising component 100 through the fire sand opening 20a.

[0073] The fire-resistant isolation device for fire and explosion protection of high-voltage cable terminals in power plants of the present invention, when the drive shaft 701 rotates, will drive the third gear 801 installed at its bottom to rotate, and then drive the fourth gear 802 meshing with the side of the third gear 801 to rotate. At this time, the rotation of the fourth gear 802 will drive the connecting shaft 803 installed on its inner side to rotate, and then drive the second belt 804 connected to the top of the connecting shaft 803 through the pulley to drive the transmission. The transmission of the second belt 804 will drive the spiral feeding roller 805 connected to its inner side through the pulley to rotate, and move the sand inside the sand storage box 40 to the side of the fire sand outlet 20a through the spiral of the outer wall of the spiral feeding roller 805.

[0074] For details, please refer to the following: Figure 9 The stabilizing component 90 includes a stabilizing part 901, which is bolted to the top of the support frame 20i. The central part of the stabilizing part 901 is annular, and a central turntable 50a is movably connected to the inner side of the annular stabilizing part 901. A roller seat 902 is mounted and fixed on the outer side of the central turntable 50a, and several rollers are arranged in annularly at equal intervals. A sliding wheel 903 is movably connected to the inner side of the roller seat 902, and the sliding wheel 903 is movably connected in an annular groove opened inside the stabilizing part 901.

[0075] The fire-resistant isolation device for fire and explosion protection of high-voltage cable terminals in power plants of the present invention, when the central turntable 50a rotates, will drive the sliding wheel 903 connected to the outer side of it through the roller seat 902 to rotate in the annular groove inside the stabilizing component 901. The stability and smoothness of the rotation are ensured by a number of sliding wheels 903.

[0076] For details, please refer to the following: Figure 10 The sand-raising assembly 100 includes a sand-raising base 1001, which is installed on the side of the fire sand outlet 20a. A sand-raising blade 1002 is rotatably connected to the top of the sand-raising base 1001. The shaft end of the sand-raising blade 1002 is connected to the output end of the servo motor 1003.

[0077] In this embodiment, the interior of the sand-lifting seat 1001 is designed as a downward-concave arc shape, which can ensure that a large amount of sand can fall naturally into the interior of the sand-lifting seat 1001, facilitating the subsequent sand-lifting operation of the sand-lifting blades 1002.

[0078] The fire-fighting isolation device for fireproof and explosion-proof power plant high-voltage cable terminals of the present invention can dig out and throw sand from inside the sand-lifting seat 1001 after sand moves into the interior of the sand-lifting seat 1001 by rotating the sand-lifting blades 1002 connected to its output end through the operation of the servo motor 1003, thereby completing the fire-fighting operation.

[0079] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. Fire-resistant and explosion-proof isolation equipment for high-voltage cable terminals in power plants, characterized in that: The system includes an isolation seat (10) surrounding the high-voltage cable terminal of the power plant and fire-fighting columns (20). Two sets of fire-fighting columns (20) are installed on top of the isolation seat (10), and the two sets are connected by a support frame (20i). A powder box (30) is located at the center of the top of the isolation seat (10). A sand storage box (40) is located inside each fire-fighting column (20). The powder box (30) is connected to a central turntable (50a) via a transmission assembly (50). Several fire nozzles (50b) are installed on the side of the central turntable (50a). Feeding fire-fighting mechanisms (60) are installed on both the left and right sides of the central turntable (50a). The feeding fire-fighting mechanisms (60) are driven by a drive motor (60i). The feeding fire-fighting mechanisms (60) also include: A toothed rotating assembly (70) is mounted on the top of the support frame (20i). The toothed rotating assembly (70) is driven by a drive motor (60i). Two sets of toothed rotating assemblies (70) are provided and are symmetrically arranged relative to the center turntable (50a). A transmission feeding assembly (80) is installed on the side of the toothed rotating assembly (70) and driven by the toothed rotating assembly (70). The bottom of the transmission feeding assembly (80) is installed inside the fire column (20) and extends into the interior of the sand storage tank (40). The center turntable (50a) is also provided with a stabilizing component (90) on its exterior. There are two sets of the stabilizing component (90), and both are installed on the top of the support frame (20i). The top of the fire column (20) is also provided with a fire sand opening (20a), and a sand blowing component (100) is provided on the side of the fire sand opening (20a). Wherein: the interior of the central turntable (50a) is hollow, the fire nozzles (50b) are arranged in a ring at equal intervals, the fire nozzles (50b) are arranged obliquely and are arranged towards the outer wall of the central turntable (50a), and a connecting rod (50c) is also installed on the outside of the fire nozzles (50b), the connecting rod (50c) is installed and fixed on the protruding part at the center of the side of the central turntable (50a); The transmission assembly (50) includes a pump body (501), which is installed on the top of the powder box (30) and connected to the powder box (30). A transmission pipe (502) is provided at the outlet of the pump body (501). The transmission pipe (502) passes through the central frame (502i), which is bolted to the side of the support frame (20i) and the isolation seat (10). A central connecting component (503) is installed on the top of the transmission pipe (502) and rotatably connected to the center of the back of the central turntable (50a). Wherein: the tooth rotation assembly (70) includes: A drive shaft (701) is connected to the output end of the drive motor (60i) and rotatably connected to the inner side of the base (702). The base (702) is mounted and fixed on the top of the support frame (20i), and the drive motor (60i) is mounted on the outer side of the base (702). A first belt (703) is mounted on the outside of the drive shaft (701) via a pulley. A rotating shaft (704) is connected to the inside of the first belt (703) via a pulley. The rotating shaft (704) is movably connected to the inside of the support frame (20i). The first gear (705) is mounted and fixed on the side of the rotating shaft (704), and the side of the first gear (705) is meshed with a second gear (706), which is mounted and fixed on the outside of the central turntable (50a). Wherein: the stabilizing component (90) includes a stabilizing part (901), which is bolted to the top of the support frame (20i). The central part of the stabilizing part (901) is annular, and a central turntable (50a) is movably connected to the inner side of the annular stabilizing part (901); a roller seat (902), which is fixed to the outer side of the central turntable (50a) and has several rollers arranged in annularly equidistantly. A sliding wheel (903) is movably connected to the inner side of the roller seat (902), and the sliding wheel (903) is movably connected to an annular groove opened inside the stabilizing part (901); Wherein: the sand-raising assembly (100) includes a sand-raising seat (1001), the sand-raising seat (1001) is installed on the side of the fire sand outlet (20a), the top of the sand-raising seat (1001) is rotatably connected to a sand-raising blade (1002), the shaft end of the sand-raising blade (1002) is connected to the output end of a servo motor (1003); wherein, the interior of the sand-raising seat (1001) is set to a downwardly concave arc shape; The central turntable (50a) installed inside the toothed rotating assembly (70) rotates, so that the sprayed fire-fighting powder can expand its spraying range under the action of centrifugal force. At the same time as the toothed rotating assembly (70) is running, the transmission feeding assembly (80) is started to operate, moving the sand inside the sand storage box (40) to the side of the sand-lifting assembly (100) and being lifted out by the sand-lifting assembly (100). The fire-fighting powder stored inside the powder box (30) is transported by the pump body (501) through the transmission pipe (502) to the interior of the central connecting component (503), and then moved to the interior of the central turntable (50a) through the central connecting component (503), thus completing the fire-fighting powder transfer operation.

2. The fire-resistant and explosion-proof isolation equipment for power plant high-voltage cable terminals according to claim 1, characterized in that: The central frame (502i) has a "Z" shape and is provided in two sets. The central connecting component (503) and the isolation seat (10) form a "+" shape. The central connecting component (503) and the central turntable (50a) are connected.

3. The fire-resistant and explosion-proof isolation equipment for power plant high-voltage cable terminals according to claim 2, characterized in that: The drive shaft (701) is also provided with a transmission feeding assembly (80), the gear ratio of the first gear (705) and the second gear (706) is 1:12, and the second gear (706) is located between two sets of stabilizing assemblies (90).

4. The fire-resistant and explosion-proof isolation equipment for power plant high-voltage cable terminals according to claim 3, characterized in that: The transmission feeding assembly (80) includes: The third gear (801) is fixedly mounted on the bottom of the drive shaft (701), and the top of the third gear (801) is meshed with the fourth gear (802). A connecting shaft (803) is installed at the center of the inside of the fourth gear (802). The connecting shaft (803) is movably connected inside the positioning block (803i), and the positioning block (803i) is fixedly installed on the side of the fire column (20); The second belt (804) is connected to the top of the connecting shaft (803) via a pulley. The inner side of the second belt (804) away from the connecting shaft (803) is connected to a spiral feed roller (805) via a pulley. The spiral feed roller (805) is installed inside the fire column (20) and extends into the sand storage tank (40).

5. The fire-resistant and explosion-proof isolation equipment for power plant high-voltage cable terminals according to claim 4, characterized in that: The third gear (801) and the fourth gear (802) are arranged perpendicularly to each other. The spiral feed roller (805) is movably connected to the central part inside the fire column (20). A fire sand inlet (20a) is provided on the side of the top of the spiral feed roller (805).

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