Distributed photovoltaic power grid cluster power distribution cabinet
By designing a temperature and smoke detection system in the distribution cabinet, the fireproof cloth is automatically ejected for isolation, and a flexible buffer mechanism is used to prevent damage caused by strong winds, the damage problem of the distribution cabinet in short-circuit fire and strong wind environments is solved, and efficient protection and stable operation are achieved.
Patent Information
- Application Number
- CN202411490243.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-03-11
AI Technical Summary
Existing distribution cabinets are difficult to effectively prevent fire from causing damage to other devices when they are short-circuited and fired, and are easily damaged by rigid collisions in strong winds.
A distributed photovoltaic grid beam distribution cabinet was designed, equipped with a temperature detector and a smoke detector. When a short circuit was found to be fired, the electric push rod drove the vertical push rod to advance, and the expansion strip ejected the fireproof cloth from the cloth through the cloth trough in the middle of the clamping frame, forming two layers of fireproof isolation to prevent the fire from spreading. At the same time, the buffer mechanism prevents the distribution cabinet from shaking and cable breaking caused by strong winds through flexible collision between the rubber block and mounting frame.
It effectively prevents short-circuit fire from causing damage to other devices, realizes efficient protection function, and prevents damage to the distribution cabinet and cables through a flexible buffer mechanism in a strong wind environment.
Smart Images
Figure CN119602107A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of power distribution cabinets, in particular to a distributed photovoltaic power grid cluster power distribution cabinet. Background Art
[0002] With the development of industrial technology, modern power distribution cabinets are becoming more and more perfect. For distributed photovoltaic power stations, solar panels are widely distributed, which requires the solar panels to be bundled with cables and connected to the power distribution cabinet. When the circuit inside the power distribution cabinet fails, there will be many sparks inside the power distribution cabinet, and these sparks will also burn electronic devices in other locations.
[0003] Secondly, the distribution cabinet equipment will be installed in the outdoor area, and there will be strong winds in the outdoor area. The previous distribution cabinet will swing violently in the windy environment, and the expansion screws between the distribution cabinet and the concrete piles will have a rigid collision, which will damage the sheet metal appearance of the distribution cabinet. Summary of the invention
[0004] The present invention provides a distributed photovoltaic power grid cluster distribution cabinet. When a short circuit and fire occur in the distribution box, the temperature detector and the smoke detector will find an emergency fault. At this time, the electric push rod drives the vertical push rod to advance toward the front of the distribution box, and the expansion bar will push the fireproof cloth out from the cloth threading groove in the middle of the clamping frame, so that all the installation horizontal frames will be separated by two layers of fireproof cloth, thereby preventing short circuit and fire from causing damage to other devices, realizing the function of efficient protection, and solving the problems raised in the above-mentioned background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A distributed photovoltaic power grid cluster distribution cabinet comprises a ground pile and a distribution box, wherein a buffer mechanism is arranged between the ground pile and the distribution box; a door panel is arranged in front of the distribution box, a threading mechanism is arranged on the back of the distribution box, and a fireproof component is arranged inside the distribution box; the fireproof component comprises a mounting cross frame and a clamping frame inside the ground pile, the mounting cross frame and the clamping frame are intermittently arranged in a straight line, the mounting cross frame is used to mount a distribution device, and the two ends of the clamping frame are fixedly connected by an overhead block and an inner side wall of the ground pile, a cloth threading groove is arranged in the middle of the overhead block, an overhead block is slidably installed inside the cloth threading groove, a fireproof cloth is arranged on the inner side wall of the ground pile, the fireproof cloth is inserted in the gap between the inner folding groove of the expansion strip and the back of the clamping frame, the fireproof cloth is connected to the winding component, the overhead block is connected to the isolation propulsion component, and a temperature detector and a smoke detector are also arranged inside the distribution box.
[0007] Furthermore, the buffer mechanism includes four mounting frames in a rectangular array at the bottom of the ground pile, an assembly box corresponding to the mounting frame is fixedly provided at the top of the ground pile, the mounting frame is inserted into the interior of the assembly box, and a rubber block is also provided in the inner folding groove of the mounting frame, and two pin rod holes are provided on the assembly box and the rubber block, and the two groups of pin rod holes are connected by pin rods.
[0008] Furthermore, the fireproof cloth is divided into three layers, the inner and outer layers of the fireproof cloth are wire mesh, and the middle layer of the fireproof cloth is fireproof fiber.
[0009] Furthermore, the isolation propulsion assembly includes two vertical push rods, and the left and right ends of the expansion strip are fixed in series through the vertical push rods. The vertical push rods are connected to the telescopic rods of the electric push rods, and the electric push rods are arranged on the left and right outer walls of the distribution box.
[0010] Furthermore, the inner folding groove of the expansion strip and the outer side wall of the clamping frame are ground and polished, and lubricating oil is applied between the inner folding groove of the expansion strip and the outer side wall of the clamping frame.
[0011] Furthermore, the winding assembly includes a locking strip at the top of the ground pile, and a winding rod is rotatably provided at the bottom end of the ground pile. The outer side of the winding rod pulls out the fireproof cloth and connects it to the locking strip. The winding rod is rotatably connected to the axis of the spring box, and the spring box is fixed on the inner wall of the ground pile.
[0012] Furthermore, the threading mechanism includes a vertical I-shaped array of threading openings on the rear side wall of the distribution box, a cable is inserted into each of the threading openings, and threading platforms are provided on the outer ends of the cables. The lowest threading platform is fixedly connected to the bottom surface, a sliding bar is provided on the top of the threading platform, and a sliding groove is provided at the bottom of the threading platform. The upper and lower sliding bars and sliding grooves are assembled in coordination, and a soft limit assembly is provided between the two threading platforms.
[0013] Furthermore, the soft limit assembly includes a rubber strip, which connects the side walls of two threading platforms at upper and lower positions. A rubber plug is also provided in the threading port, and a wire hole matching the cable is provided in the rubber plug.
[0014] As an optimal technical solution for a distributed photovoltaic power grid cluster distribution cabinet of the present invention,
[0015] The present invention has the following benefits:
[0016] First, if a short circuit and fire occur in the distribution box, the temperature detector and smoke detector will find an emergency fault. At this time, the electric push rod will drive the vertical push rod to advance toward the front of the distribution box. The expansion strip will push the fireproof cloth out from the cloth threading slot in the middle of the clamping frame, and then all the installation horizontal frames will be separated by two layers of fireproof cloth, which can prevent short circuit and fire from causing damage to other devices, thus realizing the function of efficient protection.
[0017] Secondly, when the distribution box shakes in a windy environment, the collision between the mounting frame and the rubber block on its top is relatively flexible. After the rubber block oxidizes and hardens for a period of time, the pin on the rubber block can be pulled out to separate the ground pile and the distribution box. When the distribution box shakes, the cables behind the distribution box can be buffered by the rubber strips on the side walls of the threading platform to prevent the cables from being broken by the strong wind. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a front view structural schematic diagram of a distributed photovoltaic power grid cluster distribution cabinet.
[0019] Figure 2 The figure is a side structural diagram of a distributed photovoltaic power grid cluster distribution cabinet.
[0020] Figure 3 The figure is a structural schematic diagram of a threading platform in a distributed photovoltaic power grid cluster distribution cabinet.
[0021] Figure 4 The figure is a schematic diagram of the structure of a distribution box in a distributed photovoltaic power grid cluster distribution cabinet.
[0022] Figure 5 The figure is a schematic diagram of the structure of a cross-section view of a distributed photovoltaic power grid cluster distribution cabinet.
[0023] Figure 6 The figure is a schematic diagram of the structure of a winding roller in a distributed photovoltaic power grid cluster distribution cabinet.
[0024] Figure 7 The figure is a structural schematic diagram of a clamping frame in a distributed photovoltaic power grid cluster distribution cabinet.
[0025] Figure 8 The figure is a structural schematic diagram of an assembly box in a distributed photovoltaic power grid cluster distribution cabinet.
[0026] In the figure: ground pile 1, assembly box 101, mounting frame 102, rubber block 103, pin rod hole 104, distribution box 2, door panel 3, cable 4, threading platform 5, rubber strip 501, electric push rod 6, vertical push rod 601, mounting horizontal frame 7, clockwork box 8, winding rod 801, fireproof cloth 802, clamping frame 9, overhead block 901, expansion strip 902. DETAILED DESCRIPTION
[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.
[0028] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.
[0029] See also Figure 1-8 A distributed photovoltaic power grid cluster distribution cabinet comprises a ground pile 1 and a distribution box 2, wherein a buffer mechanism is arranged between the ground pile 1 and the distribution box 2; a door panel 3 is arranged in front of the distribution box 2, a threading mechanism is arranged on the back of the distribution box 2, and a fireproof component is arranged inside the distribution box 2; the fireproof component comprises a mounting cross frame 7 and a clamping frame 9 inside the ground pile 1, the mounting cross frame 7 and the clamping frame 9 are intermittently arranged in a straight line, the mounting cross frame 7 is used to install the distribution device, and the two ends of the clamping frame 9 are fixedly connected to the inner side wall of the ground pile 1 through an overhead block 901, a cloth threading groove is arranged in the middle of the overhead block 901, and an overhead block 901 is slidably installed inside the cloth threading groove, and a fireproof cloth 802 is arranged on the inner side wall of the ground pile 1, and the fireproof cloth 802 is inserted in the folding groove and In the gap between the back sides of the clamping frame 9, the fireproof cloth 802 is connected to the winding assembly, and the overhead block 901 is connected to the isolation propulsion assembly. The distribution box 2 is also provided with a temperature detector and a smoke detector. In the event of a short circuit and fire in the distribution box 2, the temperature detector and the smoke detector will detect an emergency fault, and the expansion strip 902 will push the fireproof cloth top 802 out from the cloth threading groove in the middle of the clamping frame 9, and then all the mounting cross frames 7 will be separated by two layers of fireproof cloth 802, thereby preventing short circuit and fire from causing damage to other devices. Compared with the distribution cabinets in the prior art, once a short circuit and fire occurs in the previous distribution cabinets, other components will be burned together. The distribution box 2 of the present invention has fireproof cloth 802 for isolation, which can reduce the loss of components and achieve the function of efficient protection.
[0030] The buffer mechanism includes four mounting frames 102 in a rectangular array at the bottom of the ground pile 1. An assembly box 101 corresponding to the mounting frame 102 is fixedly provided at the top of the ground pile 1. The mounting frame 102 is inserted into the interior of the assembly box 101. A rubber block 103 is also provided in the inner folding groove of the mounting frame 102. Two pin rod holes 104 are provided on the assembly box 101 and the rubber block 103. The two groups of pin rod holes 104 are connected by pin rods. When the distribution box 2 shakes in a windy environment, the collision between the mounting frame 7 and the rubber block 103 at its top is relatively flexible. After the rubber block 103 is oxidized and hardened for a period of time, the ground pile 1 and the distribution box 2 can be separated by pulling out the pin rod on the rubber block 103.
[0031] The fireproof cloth 802 is divided into three layers. The inner and outer layers of the fireproof cloth 802 are wire meshes. The middle layer of the fireproof cloth 802 is fireproof fiber. The wire mesh outside the fireproof cloth 802 increases the toughness of pulling.
[0032] The isolation propulsion assembly includes two vertical push rods 601, and the left and right ends of the expansion strip 902 are fixed in series through the vertical push rods 601. The vertical push rods 601 are connected to the telescopic rod of the electric push rod 6. The electric push rod 6 is arranged on the left and right outer walls of the distribution box 2. The electric push rod 6 drives the vertical push rod 601 to advance toward the front direction of the distribution box 2, and the expansion strip 901 will push the fireproof cloth 802 out from the cloth threading groove in the middle of the clamping frame 9.
[0033] The inner folding groove of the expansion strip 902 and the outer wall of the clamping frame 9 are ground and polished, and lubricating oil is applied between the inner folding groove of the expansion strip 902 and the outer wall of the clamping frame 9. The lubricating oil between the inner folding groove of the expansion strip 902 and the outer wall of the clamping frame 9 reduces the friction of the fireproof cloth 802.
[0034] The winding assembly includes a locking strip at the top of the ground pile 1, and a winding rod 801 is rotatably provided at the bottom end of the ground pile 1. The outer side of the winding rod 801 pulls out the fireproof cloth 802 and connects it to the locking strip. The winding rod 801 is rotatably connected to the axis of the clockwork box 8, and the clockwork box 8 is fixed on the inner wall of the ground pile 1. When the fireproof cloth 802 is pulled out, the clockwork box 8 will store elastic potential energy. When the expansion strip 902 returns to its position, the clockwork box 8 will reverse to tighten the fireproof cloth 802.
[0035] The threading mechanism includes a vertical I-shaped array of threading openings on the rear side wall of the distribution box 2, and a cable 4 is inserted in each of the threading openings. A threading platform 5 is provided on the outer end of the cable 4, and the lowest threading platform 5 is fixedly connected to the bottom surface. A slide bar is provided on the top of the threading platform 5, and a slide groove is provided at the bottom of the threading platform 5. The upper and lower slide bars and slide grooves are assembled in coordination, and a soft limit assembly is provided between the two threading platforms 5. When the distribution box 2 shakes, the cables 4 behind the distribution box 2 can be buffered by the movement between the threading platforms 5 to prevent the cables from being rigidly broken by strong winds.
[0036] The soft limit assembly includes a rubber strip 501, which connects the side walls of two threading platforms 5 at the upper and lower positions. A rubber plug is also provided in the threading port, and a wire hole matching the cable 4 is provided in the rubber plug. The rubber strip 501 has a certain damping effect on the movement between the two threading platforms 5. The greater the relative deviation of the two threading platforms 5, the greater the tightening force of the rubber strip 501 will be.
[0037] Working principle: in the event of a short circuit and fire in the distribution box 2, the temperature detector and the smoke detector will find an emergency fault, and the expansion strip 902 will push the fireproof cloth top 802 out from the cloth threading slot in the middle of the clamping frame 9, and then all the mounting cross frames 7 will be separated by two layers of fireproof cloth 802, thereby preventing short circuit and fire from causing damage to other devices. Compared with the distribution cabinets in the prior art, once a short circuit and fire occurred in the previous distribution cabinets, other components would be burned together. The distribution box 2 of the present invention has fireproof cloth 802 inside for isolation, which can reduce the loss of components and achieve the function of efficient protection. When the distribution box 2 shakes in a windy environment, the collision between the mounting frame 7 and the rubber block 103 on its top is relatively flexible. After the rubber block 103 is oxidized and hardened for a period of time, the pin rod on the rubber block 103 can be pulled out to allow the ground pile 1 and the distribution box 2 to be separated. The electrical box 2 is separated, and the wire mesh outside the fireproof cloth 802 increases the toughness of pulling. The electric push rod 6 drives the vertical push rod 601 to advance toward the front of the distribution box 2, and the expansion bar 901 will push the fireproof cloth 802 out from the cloth threading groove in the middle of the clamping frame 9. The lubricating oil between the folding groove inside the expansion bar 902 and the outer wall of the clamping frame 9 reduces the friction of the fireproof cloth 802. When the fireproof cloth 802 is pulled out, the clockwork box 8 will store elastic potential energy. When the expansion bar 902 returns to its position, the clockwork box 8 will reverse and tighten the fireproof cloth 802. When the distribution box 2 shakes, the cables 4 behind the distribution box 2 can be buffered by the activities between the threading platforms 5 to prevent the cables from being rigidly broken by strong winds. The rubber strip 501 has a certain damping effect on the activities between the two threading platforms 5. The greater the relative deviation of the two threading platforms 5, the greater the tightening force of the rubber strip 501 will be.
[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A distributed photovoltaic power grid cluster distribution cabinet, characterized by: It comprises a ground pile (1) and a distribution box (2), wherein a buffer mechanism is arranged between the ground pile (1) and the distribution box (2); The front of the distribution box (2) is provided with a door panel (3), the back of the distribution box (2) is provided with a threading mechanism, and the interior of the distribution box (2) is provided with a fireproof component; The fireproof assembly comprises a mounting cross frame (7) and a clamping frame (9) inside the ground pile (1); the mounting cross frame (7) and the clamping frame (9) are intermittently arranged in a straight line; the mounting cross frame (7) is provided with a power distribution device; the two ends of the clamping frame (9) are fixedly connected via an overhead block (901) and the inner wall of the ground pile (1); a cloth threading groove is provided in the middle of the overhead block (901); the overhead block (901) is slidably installed inside the cloth threading groove; a fireproof cloth (802) is provided on the inner wall of the ground pile (1); the fireproof cloth (802) is inserted into the gap between the inner folding groove of the expansion strip (902) and the back of the clamping frame (9); the fireproof cloth (802) is connected to a winding assembly; the overhead block (901) is connected to an isolation propulsion assembly; and a temperature detector and a smoke detector are also provided inside the distribution box (2).
2. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The buffer mechanism comprises four mounting frames (102) in a rectangular array at the bottom of a ground pile (1); an assembly box (101) corresponding to the mounting frame (102) is fixedly arranged at the top of the ground pile (1); the mounting frame (102) is inserted into the interior of the assembly box (101); a rubber block (103) is also arranged in the inner folding groove of the mounting frame (102); two pin rod holes (104) are arranged on the assembly box (101) and the rubber block (103); and the two groups of pin rod holes (104) are connected by pin rods.
3. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The fireproof cloth (802) is divided into three layers. The inner and outer layers of the fireproof cloth (802) are wire mesh, and the middle layer of the fireproof cloth (802) is fireproof fiber.
4. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The isolation propulsion assembly comprises two vertical push rods (601), the left and right ends of the expansion strip (902) are fixedly connected in series via the vertical push rods (601), the vertical push rods (601) are connected to the telescopic rods of the electric push rods (6), and the electric push rods (6) are arranged on the left and right outer side walls of the distribution box (2).
5. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The inner folding groove of the expansion strip (902) and the outer side wall of the clamping frame (9) are ground and polished, and lubricating oil is applied between the inner folding groove of the expansion strip (902) and the outer side wall of the clamping frame (9).
6. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The winding assembly comprises a locking strip at the top of the ground pile (1); a winding rod (801) is rotatably provided at the bottom of the ground pile (1); a fireproof cloth (802) is pulled out from the outer side of the winding rod (801) and connected to the locking strip; the winding rod (801) is rotatably connected to the axis of a spring box (8); and the spring box (8) is fixed to the inner wall of the ground pile (1).
7. A distributed photovoltaic power grid cluster distribution cabinet according to claim 1, characterized in that: The threading mechanism comprises a vertical straight-line array of threading openings on the rear side wall of the distribution box (2), a cable (4) is inserted into each of the threading openings, a threading platform (5) is provided on the outer end of each of the cables (4), the lowermost threading platform (5) is fixedly connected to the bottom surface, a slide bar is provided at the top of the threading platform (5), a slide groove is provided at the bottom of the threading platform (5), the upper and lower slide bars and the slide groove are assembled in coordination, and a soft limit assembly is provided between the two threading platforms (5).
8. A distributed photovoltaic power grid cluster distribution cabinet according to claim 7, characterized in that: The soft limit assembly comprises a rubber strip (501) which connects the side walls of two threading platforms (5) at upper and lower positions. A rubber plug is also provided in the threading opening, and a threading hole matching the cable (4) is provided in the rubber plug.