A low-voltage integrated distribution box for reactive power compensation

Abstract

The present invention discloses a low-voltage comprehensive distribution box for reactive power compensation, which relates to the technical field of distribution boxes and includes a box body. An electrical box is arranged inside the box body. A number of push-pull seats are slidably installed equidistantly and uniformly inside the electrical box. A front traction seat is installed on one side of the side end face of the push-pull seat, and a rear traction seat is installed on the other side of the side end face of the push-pull seat. Elastic boxes are installed in the middle of the side end faces of the front traction seat and the rear traction seat. Reel wheels are rotatably installed in the inner cavities of the front traction seat and the rear traction seat. The present invention can perform double cable bundling, relieve the constraints of cable wiring on maintenance work, improve the convenience and reliability of maintenance work, reduce cable wear, buffer and offset external disturbing forces, improve the stability of the cable, reduce the probability of electric shock accidents, avoid potential safety hazards brought by live operation of maintenance personnel, and automatically cut off the power when the temperature inside the electrical box is abnormal, improving the safety and reliability of the distribution box.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution boxes, and specifically to a low-voltage integrated distribution box for reactive power compensation. Background Technique

[0002] Reactive power compensation, the full name is reactive power compensation, and its function is to improve the power factor of the power supply and utilization system and the load. After installing the reactive power compensation device, the transmitted reactive power is reduced. Under the condition that the transmitted active power remains unchanged, the power factor is improved, the voltage quality is improved, the power loss of the power grid is reduced, the power supply capacity of the equipment is improved. A distribution box is a low-voltage power distribution device formed by assembling switchgear, measuring instruments, protective electrical appliances and auxiliary equipment in a closed or semi-closed metal cabinet according to the electrical wiring requirements. To meet the power distribution requirements, a low-voltage integrated distribution box for reactive power compensation is needed at present;

[0003] However, for the distribution boxes on the current market, during the daily inspection and maintenance of the distribution box, due to the restraint of cable wiring, the reactive power compensation device and components cannot be fully exposed outside the distribution box, resulting in a large number of dead corners in the inspection and maintenance work. The inspection and maintenance work is not convenient and stable enough, not comprehensive and reliable enough. Not only are the cables easily strained, pinched, even pulled or pinched off, but also the maintenance personnel are prone to electric shock due to improper operation and misoperation. The safety of the inspection and maintenance work is poor, and the cables are also easily disturbed by external forces during operation, so that the cable connections are prone to looseness. Summary of the Invention

[0004] The present invention provides a low-voltage integrated distribution box for reactive power compensation, which can effectively solve the problems of the distribution boxes on the current market that during the daily inspection and maintenance of the distribution box, due to the restraint of cable wiring, the reactive power compensation device and components cannot be fully exposed outside the distribution box, resulting in a large number of dead corners in the inspection and maintenance work. The inspection and maintenance work is not convenient and stable enough, not comprehensive and reliable enough. Not only are the cables easily strained, pinched, even pulled or pinched off, but also the maintenance personnel are prone to electric shock due to improper operation and misoperation. The safety of the inspection and maintenance work is poor, and the cables are also easily disturbed by external forces during operation, so that the cable connections are prone to looseness.

[0005] To achieve the above object, the present invention provides the following technical solution: A low-voltage integrated distribution box for reactive power compensation, including a box body, an electrical box is arranged inside the box body, and a security inspection mechanism is arranged inside the electrical box;

[0006] The security inspection mechanism includes a push-pull seat;

[0007] A number of push - pull seats are slidably installed equidistantly and uniformly inside the electrical box. A front traction seat is installed on one side of the side end face of the push - pull seat, and a rear traction seat is installed on the other side of the side end face of the push - pull seat. Elasticity boxes are installed in the middle of the side end faces of the front traction seat and the rear traction seat. A reel is rotatably installed in the inner cavity of the front traction seat and the rear traction seat. A torsion spring is installed inside the elasticity box. A rotating rod is installed in the middle of the side end face of the reel. A traction cable is wound around the outside of the reel. Slide grooves are symmetrically arranged at the bottom edge of the push - pull seat. Slide seats are slidably installed inside the slide grooves. A number of guide rollers are rotatably installed equidistantly and uniformly on the inner side of the slide seats. A bundling groove is arranged in the middle of the side end face of the push - pull seat;

[0008] Guide grooves are symmetrically arranged on one side of the slide groove. A fixed seat is installed on one side of the guide groove. A sliding seat is slidably installed inside the guide groove. Slide rods are symmetrically installed at the bottom of the fixed seat. A tension spring is sleeved on the outside of the slide rod at a position on one side of the sliding seat. A number of main wiring terminals are evenly embedded and installed on the side end face of the sliding seat. A number of sub - wiring terminals are evenly embedded and installed on the side end face of the fixed seat. Push rods are symmetrically installed at the top of the side end face of the sliding seat;

[0009] A limit box is installed at the position above the push - pull seat inside the electrical box. A slide tube is embedded and installed on the side end face of the limit box corresponding to the position of the push rod. A slide plate is slidably installed inside the slide tube. A bladder strip is embedded and installed at the top of the side end face of the limit box.

[0010] Preferably, a meter box is arranged on the top of the electrical box. A cable box is arranged on one side of the electrical box. A number of wire - passing holes are evenly arranged on the side end face of the door of the cable box.

[0011] Preferably, a heat - conducting sheet is embedded and installed on one side of the fixed seat at the bottom of the push - pull seat. A number of installation grooves are evenly opened at the top of the heat - conducting sheet. The heat - conducting sheet is made of insulating material.

[0012] Preferably, the reel is connected to the torsion spring through the rotating rod. The torsion spring is in a vortex shape. The reel is connected to the slide seat through the traction cable.

[0013] Preferably, both the main wiring terminal and the sub - wiring terminal are plug - and - play wiring terminals. The main wiring terminal and the sub - wiring terminal fit together. A number of conductive holes are evenly arranged at the ends of the main wiring terminal and the sub - wiring terminal. Tightening screws are installed through threads at the positions corresponding to the conductive holes on the side end faces of the main wiring terminal and the sub - wiring terminal.

[0014] Preferably, the distance between the slide groove and the end of the push - pull seat is less than the length of the push rod. The difference between the length of the slide groove and the original length of the tension spring is equal to the length of the slide tube. The length of the slide tube is greater than the length of the main wiring terminal. The inside of the limit box is filled with inert gas.

[0015] Preferably, a dynamic power supply mechanism is arranged outside the security maintenance mechanism, and the dynamic power supply mechanism includes a leak plate;

[0016] A leak plate is arranged inside the electrical box at the position of the gap between the push-pull seats. A temperature-sensitive capsule is installed inside the leak plate. Guide pipes are symmetrically installed on both end faces of the temperature-sensitive capsule. An air box is installed on one end face of the box body. A drainage box is installed on the other end face of the box body. A vertical cavity is arranged inside the drainage box. An expansion cavity is arranged at the top of the vertical cavity. A drainage cavity is arranged at the top of the expansion cavity. A gas collection cavity is arranged at the bottom of the drainage cavity outside the expansion cavity. A through hole is opened in the middle of the bottom end of the vertical cavity;

[0017] A gravity block is slidably installed inside the vertical cavity. A push plate is slidably installed inside the expansion cavity. A plug plate is slidably installed inside the drainage cavity. A connecting rod is slidably installed in the middle of the top end of the expansion cavity. An exhaust pipe is installed on one end face of the drainage cavity. An air inlet pipe is installed on the other end face of the drainage cavity. An air guide seat is embedded and installed at the edge of the door of the cable box. An exhaust valve is installed at the corner of the side end face of the air guide seat corresponding to the position of the exhaust pipe. A filter box is embedded and installed at the bottom of the side end face of the drainage box. An air inlet valve is installed at the top of the side end face of the filter box corresponding to the position of the exhaust pipe. An exhaust groove is arranged at the bottom of the side end face of the box body. A sleeve is installed at the end of the wire passing hole. A limiting groove is arranged in the middle of the outer curved surface of the sleeve, and through pipes are symmetrically installed at the top end of the limiting box.

[0018] Preferably, both the air box and the gas collection cavity are connected to the temperature-sensitive capsule through guide pipes. The temperature-sensitive capsule is connected to the limiting box through a through pipe. The gas collection cavity is U-shaped and is connected to the vertical cavity through a through hole. Inert gases are filled inside the air box, the temperature-sensitive capsule, and the gas collection cavity.

[0019] Preferably, the push plate is connected to the plug plate through a connecting rod. The depths of both the expansion cavity and the drainage cavity are equal to the length of the connecting rod. The volumes of the vertical cavity and the expansion cavity are equal. Hydraulic fluid is filled at the position between the gravity block and the push plate inside the vertical cavity and the expansion cavity. The volume of the hydraulic fluid is equal to the volume of the expansion cavity.

[0020] Preferably, a number of filling boxes are evenly and slidably embedded in the side end face of the filter box. Activated carbon, filter sponge, and desiccant are filled in sequence inside the filling boxes. The opening of the filter box is vertically downward, and a filter plate is embedded and installed inside the exhaust groove.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The structure of the present invention is scientific and reasonable, and it is safe and convenient to use;

[0022] 1. It is equipped with a security maintenance mechanism. Through the cooperation of the front traction seat, the rear traction seat, the elastic box, the reel, the rotating rod, the traction rope and the slide, the torsion spring force can be used to double-bundle the cables through the slide, the guide roller and the cluster groove to limit the wiring path. On the one hand, it can effectively remove the restriction of the cable connection on the push-pull seat, solve the constraint of the cable connection on the maintenance work, so that the components can be fully exposed to the outside during the maintenance process, which greatly improves the convenience, stability, efficiency and reliability of the maintenance work. On the other hand, it can effectively prevent the cables from being pulled, broken, pinched or broken due to the disorder and length limitation during the maintenance work, effectively reduce the cable wear and tear, and indirectly increase the service life of the cables. On the other hand, it can provide the cables with sufficient buffer pressure relief space in the normal power supply and distribution work to buffer and offset the external disturbance force, which greatly improves the connection stability of the cables.

[0023] Through the coordination of the guide groove, fixed seat, sliding seat, sliding rod, tension spring and push rod, the main terminal and the auxiliary terminal can be automatically controlled to be on and off. On the one hand, the electrical connection between the reactive compensation device and components can be automatically cut off during daily inspection and maintenance work, effectively reducing the probability of electric shock accidents and effectively avoiding the safety hazards caused by improper operation and misoperation of maintenance personnel and live working. On the other hand, during the power supply and distribution work, it can cooperate with the limit box, sliding pipe, slide plate and bag bar to detect the power supply and distribution status, and can automatically cut off the power when the temperature inside the electrical box is abnormal, greatly improving the safety and reliability of the distribution box. Through the coordination of the heat conducting plate and the limit groove, the installation convenience and stability of the reactive compensation device and components are greatly improved, and the heat exchange efficiency is improved. Through the coordination of the conductive hole and the fastening screw, the wiring stability and convenience are improved.

[0024] 2. A dynamic endurance mechanism is provided. Through the cooperation of the leakage plate and the temperature-sensing capsule, the internal temperature of the distribution box can be detected and monitored in real time, and the heat emitted by the internal components of the distribution box during operation can be converted and utilized. On the one hand, it can cooperate with the drainage box, vertical cavity, gas collecting cavity, through hole and gravity block to convert heat into driving force. Combined with gravity, it uses thermal pressure disturbance to drive the plug plate to reciprocate, promote directional flow of airflow, promote heat exchange inside and outside the distribution box, greatly improve the stability and efficiency of heat exchange work, make the heat exchange work timely and effective, and match the heating process of the internal components of the distribution box in real time during operation, greatly improve the heat exchange effect, improve the endurance stability and working reliability of the distribution box, and save a lot of energy in disguise.

[0025] On the other hand, it can cooperate with the conduit, gas box and through pipe, and construct a complete fire extinguishing passage with the limit box. When the temperature of the distribution box is abnormal or an accidental electrical fire occurs, the inert gas can be released to extinguish the fire and flame retardant. This greatly improves the efficiency, accuracy and timeliness of the distribution box in handling accidental fire accidents, greatly reduces the economic losses caused by the spread of fire, and effectively guarantees the safety of electricity use. Through the cooperation of the expansion cavity, gravity block, push plate and connecting rod, the thermal pressure disturbance force can be amplified, which greatly improves the stability and smoothness of the heat exchange work and greatly improves the ventilation and heat exchange efficiency.

[0026] By cooperating with the drainage cavity, exhaust pipe, intake pipe, air guide seat, exhaust valve and intake valve, a complete drainage path can be constructed, making the heat exchange work more continuous and stable. By cooperating with the filter box, exhaust groove, filling box and filter plate, the heat exchange airflow can be filtered and dried, which greatly improves the dryness and cleanliness inside the distribution box and makes the power distribution work more stable. By cooperating with the sleeve and limit groove, the cables can be preliminarily fixed and bundled, and the sealing of the wiring holes can be improved, thereby improving the wiring stability and airflow direction stability, and improving the compatibility and stability of each workspace.

[0027] In summary, the low-voltage integrated distribution box with reactive power compensation can limit and pull the cable routing and double-bundle the cables, which greatly improves the convenience and stability of the inspection and maintenance work, effectively improves the wiring stability of the cables during the power supply and distribution process, greatly reduces the interference of external disturbance forces, and can automatically cut off the power during the inspection and maintenance process and when the temperature of the distribution box is abnormal. In the normal power supply and distribution process, it uses thermal pressure disturbance and gravity for active heat exchange, and performs rapid and accurate fire extinguishing in the event of an electrical fire, greatly improving the safety and reliability of the distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0029] In the attached figure:

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the push-pull seat structure of the present invention;

[0032] Figure 3 It is a structural diagram of the security inspection and repair mechanism of the present invention;

[0033] Figure 4 This is a schematic diagram of the heat conducting sheet installation structure of the present invention;

[0034] Figure 5 It is a schematic diagram of the sliding seat installation structure of the present invention;

[0035] Figure 6 It is a schematic diagram of the reel mounting structure of the present invention;

[0036] Figure 7 It is a schematic diagram of the sliding tube mounting structure of the present invention;

[0037] Figure 8 It is a schematic diagram of the auxiliary terminal block mounting structure of the present invention;

[0038] Figure 9 It is a schematic diagram of the dynamic power supply mechanism structure of the present invention;

[0039] Figure 10 It is a schematic diagram of the conduit mounting structure of the present invention;

[0040] Reference numerals in the figure: 1, box body; 101, electrical box; 102, meter box; 103, cable box; 104, wire routing hole;

[0041] 2, security maintenance mechanism; 201, push-pull seat; 202, front traction seat; 203, rear traction seat; 204, elastic box; 205, reel; 206, torsion spring; 207, rotating rod; 208, traction cable; 209, chute; 210, sliding seat; 211, guide roller; 212, bundling groove; 213, guide groove; 214, fixed seat; 215, sliding seat; 216, sliding rod; 217, tension spring; 218, main terminal block; 219, auxiliary terminal block; 220, push rod; 221, limit box; 222, sliding tube; 223, sliding plate; 224, bladder strip;

[0042] 2011, heat conducting sheet; 2012, limit groove; 2181, conductive hole; 2182, fastening screw;

[0043] 3, dynamic power supply mechanism; 301, leak plate; 302, temperature sensing bladder; 303, conduit; 304, gas box; 305, drainage box; 306, vertical cavity; 307, expansion cavity; 308, drainage cavity; 309, gas collection cavity; 310, through hole; 311, gravity block; 312, push plate; 313, plug plate; 314, connecting rod; 315, exhaust pipe; 316, intake pipe; 317, gas guide seat; 318, exhaust valve; 319, filter box; 320, intake valve; 321, exhaust groove; 322, sleeve; 323, limit groove; 324, through pipe;

[0044] 3191, filling box; 3211, filter plate. Detailed implementation manners

[0045] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0046] Embodiment: As Figures 1-10 shown, the present invention provides a technical solution, a low-voltage integrated distribution box for reactive power compensation, including a box body 1. Inside the box body 1, an electrical box 101 is provided. On the top of the electrical box 101, a meter box 102 is provided. On one side of the electrical box 101, a cable box 103 is provided. A plurality of wire holes 104 are evenly arranged at equal intervals on the side end face of the cable box 103 door, so as to realize the partition utilization of the distribution box and improve the working stability of the distribution box. Inside the electrical box 101, a security maintenance mechanism 2 is provided;

[0047] The security maintenance mechanism 2 includes a push-pull seat 201, a front traction seat 202, a rear traction seat 203, an elastic box 204, a reel 205, a torsion spring 206, a rotating rod 207, a traction cable 208, a chute 209, a sliding seat 210, a guide roller 211, a bundling groove 212, a guide groove 213, a fixed seat 214, a sliding seat 215, a sliding rod 216, a tension spring 217, a main terminal 218, a sub-terminal 219, a push rod 220, a limit box 221, a sliding tube 222, a sliding plate 223, a bladder strip 224, a heat conducting piece 2011, an installation groove 2012, a conductive hole 2181 and a fastening screw 2182;

[0048] A plurality of push-pull seats 201 are slidably installed at equal intervals inside the electrical box 101. On one side of the side end face of the push-pull seat 201, a front traction seat 202 is installed. On the other side of the side end face of the push-pull seat 201, a rear traction seat 203 is installed. Elastic boxes 204 are installed in the middle of the side end faces of the front traction seat 202 and the rear traction seat 203. Reels 205 are rotatably installed inside the front traction seat 202 and the rear traction seat 203. Torsion springs 206 are installed inside the elastic boxes 204. A rotating rod 207 is installed in the middle of the side end face of the reel 205. A traction cable 208 is wound around the outside of the reel 205. Chutes 209 are symmetrically arranged at the bottom edge of the push-pull seat 201. Sliding seats 210 are slidably installed inside the chutes 209. The reel 205 is connected to the torsion spring 206 through the rotating rod 207. The torsion spring 206 is in a spiral shape. The reel 205 is connected to the sliding seat 210 through the traction cable 208. The length of the chute 209 is greater than half of the width of the push-pull seat 201, so as to perform secondary bundling of the cables, improve the anti-disturbance effect of the cables while improving the cable connection stability and enhancing the maintenance convenience of the distribution box. A plurality of guide rollers 211 are rotatably installed at equal intervals inside the sliding seat 210. A bundling groove 212 is arranged in the middle of the side end face of the push-pull seat 201;

[0049] On one side of the sliding groove 209, guide grooves 213 are symmetrically arranged. On one side of the guide grooves 213, a fixed seat 214 is installed. At the bottom end of the push-pull seat 201, a heat-conducting sheet 2011 is embedded and installed on one side of the fixed seat 214. A number of mounting grooves 2012 are evenly arranged at equal intervals at the top end of the heat-conducting sheet 2011. The heat-conducting sheet 2011 is made of insulating material, so as to improve the installation convenience and stability of electrical components while promoting the stable progress of heat exchange inside the distribution box. A sliding seat 215 is slidably installed inside the guide grooves 213. At the bottom end of the fixed seat 214, sliding rods 216 are symmetrically installed. A tension spring 217 is sleeved on the outer side of the sliding rods 216 at a position on one side of the sliding seat 215;

[0050] A number of main wiring terminals 218 are evenly embedded and installed at equal intervals on the side end face of the sliding seat 215. A number of secondary wiring terminals 219 are evenly embedded and installed at equal intervals on the side end face of the fixed seat 214. Both the main wiring terminals 218 and the secondary wiring terminals 219 are pluggable wiring terminals. The main wiring terminals 218 and the secondary wiring terminals 219 fit together. A number of conductive holes 2181 are evenly arranged at equal intervals at the ends of the main wiring terminals 218 and the secondary wiring terminals 219. At positions corresponding to the conductive holes 2181 on the side end faces of the main wiring terminals 218 and the secondary wiring terminals 219, fastening screws 2182 are installed by threads, so as to realize the grafting of cables and improve the wiring convenience and stability of components inside the distribution box. Push rods 220 are symmetrically installed at the top of the side end face of the sliding seat 215;

[0051] Inside the electrical box 101, a limit box 221 is installed at a position above the push-pull seat 201. A sliding tube 222 is embedded and installed at a position on the side end face of the limit box 221 corresponding to the push rods 220. The distance between the sliding groove 209 and the end of the push-pull seat 201 is less than the length of the push rods 220. The difference between the length of the sliding groove 209 and the original length of the tension spring 217 is equal to the length of the sliding tube 222. The length of the sliding tube 222 is greater than the length of the main wiring terminals 218. The inside of the limit box 221 is filled with inert gas, so as to improve the continuous stability of the distribution box during operation, reduce the harm degree of electrical fires, and improve the safety of distribution box maintenance. A sliding plate 223 is slidably installed inside the sliding tube 222. A bladder strip 224 is embedded and installed at the top of the side end face of the limit box 221.

[0052] Outside the security maintenance mechanism 2, a dynamic power supply mechanism 3 is arranged. The dynamic power supply mechanism 3 includes a leak plate 301, a temperature-sensitive bladder 302, a conduit 303, a gas box 304, a drainage box 305, a vertical cavity 306, an expansion cavity 307, a drainage cavity 308, a gas collection cavity 309, a through hole 310, a gravity block 311, a push plate 312, a plug plate 313, a connecting rod 314, an exhaust pipe 315, an intake pipe 316, a gas guide seat 317, an exhaust valve 318, a filter box 319, an intake valve 320, an exhaust groove 321, a sleeve 322, a limit groove 323, a through pipe 324, a filling box 3191 and a filter plate 3211;

[0053] Inside the electrical box 101, a leakage plate 301 is arranged at the position of the gap between the push-pull seats 201. A temperature-sensitive capsule 302 is installed inside the leakage plate 301. Guide pipes 303 are symmetrically installed on both end faces of the temperature-sensitive capsule 302. An air box 304 is installed on one end face of the box body 1, and a drainage box 305 is installed on the other end face of the box body 1. A vertical cavity 306 is arranged inside the drainage box 305. An expansion cavity 307 is arranged at the top of the vertical cavity 306. A drainage cavity 308 is arranged at the top of the expansion cavity 307. A gas collection cavity 309 is arranged at the bottom of the drainage cavity 308 outside the expansion cavity 307. A through hole 310 is opened in the middle of the bottom end of the vertical cavity 306;

[0054] A gravity block 311 is slidably installed inside the vertical cavity 306, a push plate 312 is slidably installed inside the expansion cavity 307, a plug plate 313 is slidably installed inside the drainage cavity 308. A connecting rod 314 is embedded and slidably installed in the middle of the top end of the expansion cavity 307. The push plate 312 is connected to the plug plate 313 through the connecting rod 314. The depths of both the expansion cavity 307 and the drainage cavity 308 are equal to the length of the connecting rod 314. The volumes of the vertical cavity 306 and the expansion cavity 307 are equal. Hydraulic fluid is filled at the position between the gravity block 311 and the push plate 312 inside the vertical cavity 306 and the expansion cavity 307. The volume of the hydraulic fluid is equal to the volume of the expansion cavity 307 for pressure amplification. Using thermal pressure conversion and gravity, ventilation and heat exchange of the distribution box are promoted. An exhaust pipe 315 is installed on one end face of the drainage cavity 308, and an intake pipe 316 is installed on the other end face of the drainage cavity 308. A gas guide seat 317 is embedded and installed at the edge of the door of the cable box 103. An exhaust valve 318 is installed at the corner of the side end face of the gas guide seat 317 corresponding to the position of the exhaust pipe 315. A filter box 319 is embedded and installed at the bottom of the side end face of the drainage box 305. An intake valve 320 is installed at the top of the side end face of the filter box 319 corresponding to the position of the exhaust pipe 315;

[0055] An exhaust groove 321 is arranged at the bottom of the side end face of the box body 1. A number of filling boxes 3191 are embedded and slidably installed at equal intervals and uniformly on the side end face of the filter box 319. Activated carbon, filter sponge and desiccant are filled in sequence inside the filling boxes 3191. The opening of the filter box 319 is vertically downward. A filter plate 3211 is embedded and installed inside the exhaust groove 321 to maintain the dryness and cleanliness inside the distribution box and improve the working stability of the distribution box. A sleeve 322 is installed at the end of the wiring hole 104. A limit groove 323 is arranged in the middle of the outer curved surface of the sleeve 322. Through pipes 324 are symmetrically installed at the top end of the limit box 221. Both the air box 304 and the gas collection cavity 309 are connected to the temperature-sensitive capsule 302 through the guide pipes 303. The temperature-sensitive capsule 302 is connected to the limit box 221 through the through pipes 324. The gas collection cavity 309 is U-shaped. The gas collection cavity 309 is connected to the vertical cavity 306 through the through hole 310. Inert gas is filled inside the air box 304, the temperature-sensitive capsule 302 and the gas collection cavity 309 for current-limiting guidance and utilization of the heat generated inside the distribution box during operation.

[0056] Working principle and usage process of the present invention: When the low-voltage comprehensive power distribution box for reactive power compensation is actually used, first, stably place the box body 1 in the working area to be served. Then, open the box doors of the electrical box 101, the meter box 102, and the cable box 103 respectively. Install the corresponding external meter instruments into the meter box 102. Pull out each push-pull seat 201. According to the actual situation, place the external reactive power compensation device and the corresponding external components into the push-pull seat 201 respectively and place them on the heat-conducting sheet 2011. Subsequently, utilize the installation groove 2012 and fix the external reactive power compensation device and the corresponding external components on the corresponding push-pull seats 201 respectively through external fixing items;

[0057] Then, select the corresponding number of external wires. Insert one end of the wire into the conductive hole 2181 on the secondary wiring terminal 219 and fix it through the corresponding fastening screw 2182. Connect the other end of the wire to the input and output ends of the reactive power compensation device and the corresponding external components respectively, and connect the reactive power compensation device and the corresponding external components to the meter through the corresponding external wires;

[0058] Subsequently, according to the actual situation, pass each corresponding external cable through the limiting groove 323 in sequence and pass through the wire routing hole 104. Then, continue to pull the cable. According to the actual situation, that is, the position of the push-pull seat 201 where the external reactive power compensation device and the corresponding external components are installed, pass the corresponding cable through the bundling groove 212 on the corresponding push-pull seat 201, and pass through the gap between the guide rollers 211 on the two sliding seats 210 in sequence. According to the connection situation of the aforementioned wires, insert the end of the cable into the conductive hole 2181 inside the main wiring terminal 218 corresponding to the secondary wiring terminal 219 and fix it through the fastening screw 2182;

[0059] During the above process, to improve the wiring standardization and the convenience of subsequent maintenance, the supply-end cable can be passed through the limiting groove 323 on the top side, while the load-end cable is passed through the limiting groove 323 on the bottom side. After fixing the end of the cable, close the box door of the meter box 102, close the box door of the cable box 103, reset each push-pull seat 201, close the box door of the electrical box 101. Then, pull the aforementioned cables passing through the limiting groove 323, pull out the redundant parts of each cable remaining inside the cable box 103. After feeling the elastic pulling force, stop pulling. Subsequently, tighten the limiting groove 323 through an external cable tie, so that the sleeve 322 tightly wraps the corresponding cable, while ensuring the tightness of the wire routing hole 104, and fix the cable;

[0060] After completing the above wiring work, the distribution box can be put into normal power distribution work. At this time, inside the electrical box 101, under the limitation of the above-mentioned cable threading path, the guide rollers 211 on the two sliding seats 210 will pull the corresponding cables, making each cable follow a Z-shaped routing. During normal power supply and distribution work, by using the tension conduction of the traction cable 208, under the limiting action of the reel 205 and the rotating rod 207, and using the elastic force of the torsion spring 206, elastic limiting support is given to the cables. While reserving sufficient space for external force disturbance adjustment, the external disturbing force is unloaded;

[0061] In order to ensure the working stability and safety reliability of the distribution box, it is necessary to regularly inspect and maintain the reactive power compensation device and each component inside the distribution box. At this time, open the box door of the electrical box 101 and pull out each push-pull seat 201. As the push-pull seat 201 is pulled out, the cable will press the corresponding guide roller 211, forcing the two sliding seats 210 to drag the corresponding traction cable 208. Eventually, the elastic force exerted by the torsion spring 206 on the reel 205 is overcome, forcing the reel 205 to unwind the traction cable 208. Then, the two sliding seats 210 will move towards each other along the chute 209. As the push-pull seat 201 is gradually pulled out, the cable routing gradually changes from Z-shaped to linear, releasing the restriction of the cable connection on the push-pull seat 201, enabling the push-pull seat 201 to be directly pulled out, and making the reactive power compensation device and the corresponding components fully exposed to the outside, greatly improving the convenience of inspection and maintenance;

[0062] At the same time, as the push-pull seat 201 is gradually pulled out, the push rod 220 and the sliding plate 223 are no longer in contact. After the push rod 220 loses the support of the sliding plate 223, it can no longer provide sufficient support force for the sliding seat 215. Then, under the pulling force of the tension spring 217, the sliding seat 215 slides along the sliding rod 216, away from the fixed seat 214, forcing the main wiring terminal 218 to separate from the secondary wiring terminal 219, putting the reactive power compensation device and the corresponding components in an automatic power-off state, avoiding potential safety hazards caused by improper or incorrect operations of maintenance personnel during live work;

[0063] After completing the maintenance work, reset each push-pull seat 201. At this time, under the elastic force exerted by the torsion spring 206 on the reel 205, the reel 205 is forced to wind up the traction cable 208. Then, the two sliding seats 210 are forced to move away from each other along the chute 209, bundling the cables, effectively preventing the cables from being jammed by the push-pull seat 201 during the reset process of the push-pull seat 201, improving the smoothness of the reset of the push-pull seat 201 while avoiding cable damage. Finally, the sliding plate 223 will contact the push rod 220. Under the air pressure support inside the limit box 221, the push rod 220 will obtain sufficient support force, and it will push the sliding seat 215, overcoming the pulling force of the tension spring 217, forcing the main wiring terminal 218 to be inserted into the secondary wiring terminal 219;

[0064] During the normal operation of the distribution box, with the progress of power supply and distribution work, both the reactive power compensation device and the corresponding components will generate varying degrees of heat due to factors such as continuous operation and load changes. In order to promote the stable progress of heat exchange work, an appropriate amount of helium should be filled into the gas box 304 in advance, forcing the gravity block 311 to just separate from the bottom end of the vertical cavity 306 under the action of air pressure and maintain stability;

[0065] As the power distribution work progresses, when the temperature inside the electrical box 101 rises, the inert gas inside the temperature-sensitive capsule 302 will expand due to heat. Under the limiting action of the leak plate 301, its internal pressure will rise. Then, under the conduction action of the conduit 303, this pressure change will gather and polymerize inside the gas collection cavity 309 and be transmitted into the vertical cavity 306 through the through hole 310, forcing the gravity block 311 to rise;

[0066] Furthermore, under the conduction of the hydraulic fluid, the push plate 312 will amplify the pressure received by the gravity block 311 and push the plug plate 313 to displace through the connecting rod 314, forming a directional air flow inside the drainage cavity 308, forcing the external cold air to flow into the box body 1 for cooling. As the temperature drops, the internal air pressure of the temperature-sensitive capsule 302 will also decrease accordingly. Correspondingly, the pressure received at the bottom of the gravity block 311 decreases, and it will drop due to insufficient support force. Immediately afterwards, the push plate 312 and the plug plate 313 will also drop after losing support;

[0067] Furthermore, as the temperature inside the electrical box 101 fluctuates, the plug plate 313 will perform reciprocating motion correspondingly, forcing the external cold air to enter the drainage cavity 308 through the intake valve 320 via the intake pipe 316 after being filtered and dried by the filler inside the filter box 319. After passing through the drainage cavity 308, through the exhaust pipe 315, passing through the exhaust valve 318, entering the air guide seat 317, and being secondarily split by the air guide seat 317, it will pour into the inside of the box body 1 and finally be discharged through the exhaust groove 321, forming a complete heat exchange cycle;

[0068] When a fault occurs during the operation of the distribution box and the temperature inside the electrical box 101 rises abnormally due to short circuit or other accidental factors, when the temperature exceeds the safety threshold and an electrical fire occurs, the capsule strip 224 will melt under the action of external high temperature, and then an air outlet will be formed on the limit box 221. Under the connection action of the conduit 303, the temperature-sensitive capsule 302, the gas box 304, and the limit box 221 will all be discharged through this air outlet to prevent the spread of fire. And the push rod 220 will also be inserted into the sliding tube 222 under the pulling force of the tension spring 217 after losing the support of the sliding plate 223, forcing the main wiring terminal 218 and the auxiliary wiring terminal 219 to separate, realizing automatic power-off.

[0069] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A low-voltage comprehensive distribution box for reactive power compensation, comprising a box body (1), characterized in that: Inside the box body (1), an electrical box (101) is provided, and inside the electrical box (101), a security maintenance mechanism (2) is provided; The security maintenance mechanism (2) includes a push-pull seat (201); A number of push-pull seats (201) are slidably installed equidistantly and evenly inside the electrical box (101). On one side of the side end face of the push-pull seat (201), a front traction seat (202) is installed. On the other side of the side end face of the push-pull seat (201), a rear traction seat (203) is installed. In the middle of the side end faces of the front traction seat (202) and the rear traction seat (203), elastic boxes (204) are installed. Inside the front traction seat (202) and the rear traction seat (203), winding wheels (205) are rotatably installed. Inside the elastic box (204), a torsion spring (206) is installed. In the middle of the side end face of the winding wheel (205), a rotating rod (207) is installed. A traction cable (208) is wound around the outside of the winding wheel (205). At the bottom edge of the push-pull seat (201), sliding grooves (209) are symmetrically arranged. Inside the sliding grooves (209), sliding seats (210) are slidably installed. Inside the sliding seats (210), a number of guide rollers (211) are rotatably installed equidistantly and evenly. In the middle of the side end face of the push-pull seat (201), a bundling groove (212) is provided; On one side of the sliding groove (209), guide grooves (213) are symmetrically arranged. On one side of the guide grooves (213), a fixed seat (214) is installed. Inside the guide grooves (213), sliding seats (215) are slidably installed. At the bottom of the fixed seat (214), sliding rods (216) are symmetrically installed. On the outside of the sliding rods (216) and on one side of the sliding seat (215), a tension spring (217) is sleeved. On the side end face of the sliding seat (215), a number of main wiring terminals (218) are evenly embedded. On the side end face of the fixed seat (214), a number of secondary wiring terminals (219) are evenly embedded. On the top of the side end face of the sliding seat (215), push rods (220) are symmetrically installed; Inside the electrical box (101) and at the position above the push-pull seat (201), a limit box (221) is installed. Inside the limit box (221) and corresponding to the position of the push rod (220), a sliding tube (222) is embedded. Inside the sliding tube (222), a sliding plate (223) is slidably installed. On the top of the side end face of the limit box (221), a bladder strip (224) is embedded.

2. The low-voltage integrated power distribution box for reactive power compensation according to claim 1, wherein On the top of the electrical box (101), a meter box (102) is provided. On one side of the electrical box (101), a cable box (103) is provided. On the side end face of the door of the cable box (103), a number of wire passing holes (104) are evenly arranged.

3. The low-voltage integrated power distribution box for reactive power compensation according to claim 1, characterized in that, At the bottom of the push-pull seat (201) and on one side of the fixed seat (214), a heat conducting sheet (2011) is embedded. At the top of the heat conducting sheet (2011), a number of installation grooves (2012) are evenly opened. The heat conducting sheet (2011) is made of insulating material.

4. A low-voltage integrated distribution box for reactive power compensation according to claim 1, characterized in that, The reel (205) is connected to the torsion spring (206) via a rotating rod (207), the torsion spring (206) is vortex-shaped, the reel (205) is connected to the slide seat (210) via a traction rope (208), and the length of the slide groove (209) is greater than half the width of the push-pull seat (201).

5. The low-voltage integrated distribution box for reactive power compensation according to claim 2, characterized in that, The main terminal (218) and the auxiliary terminal (219) are both plug-in terminals. The main terminal (218) and the auxiliary terminal (219) are matched with each other. The ends of the main terminal (218) and the auxiliary terminal (219) are evenly and evenly provided with a plurality of conductive holes (2181). The side surfaces of the main terminal (218) and the auxiliary terminal (219) are both threadedly installed with fastening screws (2182) at positions corresponding to the conductive holes (2181).

6. A low-voltage comprehensive distribution box for reactive power compensation according to claim 1, characterized in that, The distance between the slide groove (209) and the end of the push-pull seat (201) is less than the length of the push rod (220), the difference between the length of the slide groove (209) and the original length of the tension spring (217) is equal to the length of the slide tube (222), the length of the slide tube (222) is greater than the length of the main terminal (218), and the interior of the limit box (221) is filled with inert gas.

7. A low-voltage integrated distribution box for reactive power compensation according to claim 5, characterized in that, A dynamic endurance mechanism (3) is provided outside the security inspection and repair mechanism (2), and the dynamic endurance mechanism (3) includes a leak plate (301); A leak plate (301) is provided inside the electrical box (101) at the position of the gap between the push-pull seat (201), a temperature-sensing capsule (302) is installed inside the leak plate (301), and both end faces of the temperature-sensing capsule (302) are symmetrically installed with guide tubes (303), an air box (304) is installed on one end face of the box body (1), and a drainage box (305) is installed on the other end face of the box body (1), a vertical cavity (306) is provided inside the drainage box (305), an expansion cavity (307) is provided at the top of the vertical cavity (306), a drainage cavity (308) is provided at the top of the expansion cavity (307), a gas collecting cavity (309) is provided at the bottom of the drainage cavity (308) outside the expansion cavity (307), and a through hole (310) is provided in the middle of the bottom end of the vertical cavity (306); A gravity block (311) is slidably installed inside the vertical cavity (306), a push plate (312) is slidably installed inside the expansion cavity (307), a plug plate (313) is slidably installed inside the drainage cavity (308), a connecting rod (314) is embedded and slidably installed in the middle of the top end of the expansion cavity (307), an exhaust pipe (315) is installed on one end face of the drainage cavity (308), an intake pipe (316) is installed on the other end face of the drainage cavity (308), a gas guide seat (317) is embedded and installed at the edge of the door of the cable box (103), an exhaust valve (318) is installed at the position corresponding to the exhaust pipe (315) at the corner of the side end face of the gas guide seat (317), a filter box (319) is embedded and installed at the bottom of the side end face of the drainage box (305), an intake valve (320) is installed at the position corresponding to the exhaust pipe (315) at the top of the side end face of the filter box (319), an exhaust groove (321) is arranged at the bottom of the side end face of the box body (1), a sleeve (322) is installed at the end of the wire passing hole (104), a limiting groove (323) is arranged in the middle of the outer curved surface of the sleeve (322), and ventilation pipes (324) are symmetrically installed at the top end of the limiting box (221).

8. A low-voltage comprehensive distribution box for reactive power compensation according to claim 7, characterized in that, The air box (304) and the gas collecting cavity (309) are both connected to the temperature sensing capsule (302) through a conduit (303), the temperature sensing capsule (302) is connected to the limiting box (221) through a ventilation pipe (324), the gas collecting cavity (309) is U-shaped, the gas collecting cavity (309) is connected to the vertical cavity (306) through a through hole (310), and inert gas is filled inside the air box (304), the temperature sensing capsule (302) and the gas collecting cavity (309).

9. A low-voltage integrated power distribution box for reactive power compensation according to claim 7, characterized in that, The push plate (312) is connected to the plug plate (313) through the connecting rod (314), the depths of the expansion cavity (307) and the drainage cavity (308) are both equal to the length of the connecting rod (314), the volumes of the vertical cavity (306) and the expansion cavity (307) are equal, and hydraulic fluid is filled at the position between the gravity block (311) and the push plate (312) inside the vertical cavity (306) and the expansion cavity (307), and the volume of the hydraulic fluid is equal to the volume of the expansion cavity (307).

10. A low-voltage integrated distribution box for reactive power compensation according to claim 7, characterized in that, A number of filling boxes (3191) are evenly embedded and slidably installed at equal intervals on the side end face of the filter box (319), activated carbon, filter sponge and desiccant are filled in sequence inside the filling boxes (3191), the opening of the filter box (319) is vertically downward, and a filter plate (3211) is embedded and installed inside the exhaust groove (321).

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