Protective isolation device for high-low voltage electrical equipment

Abstract

The utility model provides a high and low voltage electrical equipment protection isolation device comprising a mounting rack, a mounting position is formed in the middle of the top of the mounting rack, a back plate is arranged behind the upper surface of the mounting rack, and half frame bodies are rotatably arranged on the left and right sides of the back plate. And when the two half frame bodies rotate inwards to be closed, the two half frame bodies and the back plate form a complete box body. According to the high-low voltage electrical equipment protection isolation device, an electrical fire sensor sends out a signal, an electric telescopic rod drives a closing plate to move upwards and a connecting rod on the closing plate moves upwards while a fire extinguishing box valve is opened, so that a baffle blocks an air outlet, and the closing plate is attached to an annular baffle to form a closed space; dry powder in the fire extinguishing box extinguishes fire for the electrical equipment through the spray head, all-directional fire extinguishing can be conducted on the electrical equipment in the first time, the fire is prevented from spreading outwards and causing larger loss, meanwhile, air circulation is reduced through the closed space, and therefore the flame retardant effect can be achieved, and fire spreading is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a protective isolation device for high and low voltage electrical equipment. Background Art

[0002] Electrical equipment is a general term for transformers, power lines, circuit breakers and other equipment in the power system. Accidents are inevitable during the use of electrical equipment, which will affect the normal operation of the electrical equipment. In order to reduce accidents and losses, protective isolation devices are usually installed on electrical equipment.

[0003] For example, Chinese patent CN110957118B discloses a transformer fire protection device with a heat dissipation function. The connecting block drives the telescopic plate to allow the sand above to leak out from the bottom of the compartment. If a fire starts inside the electrical equipment, it is difficult for the sand to quickly and effectively retard the electrical equipment during the falling process. The sand needs to completely submerge the electrical equipment to reduce air circulation and achieve a flame retardant effect. The fire extinguishing efficiency is slow and there are many restrictions. Summary of the invention

[0004] The utility model provides a high- and low-voltage electrical equipment protection isolation device, which solves the problem of being able to efficiently and quickly extinguish the fire of the electrical equipment when a fire occurs in the electrical equipment.

[0005] In order to solve the above technical problems, the utility model provides a high- and low-voltage electrical equipment protection isolation device, comprising a mounting frame, a mounting position is formed in the middle of the top of the mounting frame, a back plate is arranged behind the upper surface of the mounting frame, and half frames are rotatably arranged on both sides of the back plate, and when the two half frames are rotated inwardly and closed, they form a complete box with the back plate;

[0006] A mounting frame is provided at the bottom of the mounting frame, an annular baffle is provided on the inner wall of the mounting frame, a plurality of air inlets are provided on the surface of the mounting frame and below the annular baffle, an air outlet is provided on the top of the half frame, a closing plate is provided in the mounting frame and below the annular baffle so as to be liftable, a fire extinguishing box is provided on the lower surface of the closing plate, a plurality of supporting columns are provided on the upper surface of the closing plate and located at the inner edge of the annular baffle, a nozzle facing the middle of the box is provided on the supporting columns, and when the closing plate moves upward, the annular baffle, the closing plate and the box form a closed space.

[0007] Preferably, a rotating shaft is provided on both the left and right sides of the back plate, and the two rotating shafts are fixedly connected to the two half frames respectively.

[0008] Preferably, a dehumidifier is provided in the air inlet, and an exhaust fan is provided in the air outlet.

[0009] Preferably, an electrical fire sensor is provided on the front side of the back plate, and supporting legs are provided at the bottom of the mounting frame and on the periphery of the mounting frame.

[0010] Preferably, an electric telescopic rod is arranged at the bottom of the middle of the inner cavity of the installation frame and below the closing plate, and limiting columns penetrating the closing plate are arranged at the bottom of the inner cavity of the installation frame and on both sides of the electric telescopic rod.

[0011] Preferably, connecting rods are provided on the upper surface of the closing plate and below the plurality of air outlets, and a baffle is provided on the upper surface of each connecting rod.

[0012] Compared with the related art, the high and low voltage electrical equipment protection isolation device provided by the utility model has the following beneficial effects:

[0013] The utility model provides a protective isolation device for high and low voltage electrical equipment. When the temperature is too high and a fire occurs, the electrical fire sensor sends a signal, the valve of the fire extinguishing box is opened and the electric telescopic rod drives the closing plate to move upward, the connecting rod on the closing plate moves upward, so that the baffle blocks the air outlet, the closing plate fits with the annular baffle to form a closed space, and the dry powder in the fire extinguishing box extinguishes the fire of the electrical equipment through the nozzle, so the electrical equipment can be extinguished in all directions at the first time, and the fire can be prevented from spreading to the outside and causing greater losses. The air circulation is reduced in the closed space, so that a flame retardant effect can be achieved to prevent the fire from expanding. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of a preferred embodiment of the high and low voltage electrical equipment protection isolation device provided by the utility model;

[0015] Figure 2 for Figure 1 The schematic cross-sectional view of the structure from above is shown;

[0016] Numbers in the figure: 1, mounting frame, 2, back plate, 3, half frame, 4, mounting frame, 5, annular baffle, 6, closing plate, 7, fire extinguisher box, 8, supporting column, 9, sprinkler, 10, air inlet, 11, air outlet, 12, rotating shaft, 15, electrical fire sensor, 16, supporting leg, 17, electric telescopic rod, 18, limiting column, 19, connecting rod, 20, baffle. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0018] Please refer to Figure 1 and Figure 2 ,in, Figure 1A structural schematic diagram of a preferred embodiment of the high and low voltage electrical equipment protection isolation device provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the cross-sectional structure from above is shown. The high- and low-voltage electrical equipment protection isolation device comprises a mounting frame 1, the middle of the top of the mounting frame 1 forms a mounting position, a back plate 2 is arranged behind the upper surface of the mounting frame 1, and half frames 3 are rotatably arranged on both sides of the back plate 2, and when the two half frames 3 are rotated inwards and closed, they form a complete box with the back plate 2;

[0019] The mounting frame 1 is a frame structure made of high temperature resistant material, so that the electrical equipment mounted on the mounting frame 1 can dissipate heat better.

[0020] The back plate 2 and the two half frames 3 are provided with wire inlets and sealing rings, so that the wires pass through the sealing rings to seal the box.

[0021] The back panel 2 and the two half frames 3 are both made of high temperature resistant materials. When the two half frames 3 are rotated outward, the box opens to facilitate the installation of electrical equipment. When the half frames 3 are closed, in order to achieve a better sealing effect, the top of the half frame adopts an inlaid structure, the front side is sealed by a bevel, and the bottom is sealed by a concave sealing strip provided on the mounting frame 1 and a convex sealing strip matched with the concave sealing strip provided on the bottom of the half frame 3.

[0022] A mounting frame 4 is provided at the bottom of the mounting frame 1, an annular baffle 5 is provided on the inner wall of the mounting frame 4, a plurality of air inlets 10 are provided on the surface of the mounting frame 4 and below the annular baffle 5, an air outlet 11 is provided on the top of the half frame 3, a closing plate 6 is provided in the mounting frame 4 and below the annular baffle 5 so as to be liftable, a fire extinguishing box 7 is provided on the lower surface of the closing plate 6, a plurality of supporting columns 8 are provided on the upper surface of the closing plate 6 and at the inner edge of the annular baffle 5, a nozzle 9 facing the middle of the box is provided on the supporting column 8, and when the closing plate 6 moves upward, the annular baffle 5, the closing plate 6 and the box form a closed space.

[0023] The mounting frame 4, the annular baffle plate 5, the closing plate 6 and the supporting column 8 are all made of high temperature resistant materials.

[0024] The lower surface of the annular baffle 5 is provided with a sealing strip. When the closing plate 6 moves upward, the upper surface of the closing plate 6 contacts the sealing strip to seal the annular baffle 5, the closing plate 6 and the box body to form a closed space.

[0025] Air inlets are provided at the side and the bottom, and rain shields are provided at the side air inlets 10 and air outlets 11 to prevent wind from blowing rainwater into the protective isolation device for high and low voltage electrical equipment when it rains.

[0026] The support column 8 can be raised to the top of the mounting frame 1 through the gap between the frames of the mounting frame 1. The plurality of nozzles 9 are provided with tilt angles. Through different tilt angles and the plurality of nozzles 9, fire can be extinguished on the electrical equipment from a given direction.

[0027] A rotating shaft 12 is disposed on both the left and right sides of the back plate 2 , and the two rotating shafts 12 are fixedly connected to the two half frames 3 respectively.

[0028] A sealing strip is provided on the edge of the rotating shaft, and a sealed space is formed when the two half-frames 3 are closed. The two half-frames 3 can be locked by buckles when closed.

[0029] A dehumidifier is disposed in the air inlet 10 , and an exhaust fan is disposed in the air outlet 11 .

[0030] The dehumidifier can effectively prevent humid air from entering the device, slowing down the aging of electrical equipment and providing better protection for the electrical equipment. The exhaust fan can speed up the air circulation in the device and provide better heat dissipation for the electrical equipment.

[0031] An electrical fire sensor 15 is provided on the front side of the back panel 2, a supporting leg 16 is provided at the bottom of the mounting frame 1 and at the periphery of the mounting frame 4, an electric telescopic rod 17 is provided at the bottom of the middle of the inner cavity of the mounting frame 4 and below the closing plate 6, and limiting columns 18 that penetrate the closing plate 6 are provided at the bottom of the inner cavity of the mounting frame 4 and on both sides of the electric telescopic rod 17, a connecting rod 19 is provided on the upper surface of the closing plate 6 and below the plurality of air outlets 11, and a baffle 20 is provided on the upper surface of each connecting rod 19.

[0032] The limiting column 18, connecting rod 19 and baffle 20 are made of high temperature resistant materials. The support plate 16 is used to keep the equipment at a certain distance from the ground to facilitate air intake and heat dissipation. When a fire occurs, the electrical fire sensor 15 transmits a signal to the control module, and the control module transmits a signal to the electronic valve in the fire extinguishing box 7. The electronic valve opens, and the dry powder in the fire extinguishing box 7 enters the nozzle 9 through the pipeline to extinguish the burning electronic equipment. At the same time, a signal is sent to the electric telescopic rod 17, and the electric telescopic rod 17 drives the closing plate 6 to move straight upward through the limiting column 18 and contact the annular baffle 5 for sealing. When the closing plate 6 moves upward, it drives the connecting rod 19 to move upward, so that the baffle 20 blocks the air inlet 10, and a completely enclosed space is formed inside, which restricts air circulation, reduces the oxygen content and prevents the spread of fire.

[0033] The working principle of the high and low voltage electrical equipment protection isolation device provided by the utility model is as follows: when the temperature is too high and a fire occurs, the electrical fire sensor 15 sends a signal, the valve of the fire extinguishing box 7 is opened and the electric telescopic rod 17 drives the closing plate 6 to move upward, and the connecting rod 19 on the closing plate 6 moves upward, so that the baffle 20 blocks the air outlet 11, and the closing plate 6 fits with the annular baffle 5 to form a closed space. The dry powder in the fire extinguishing box 7 extinguishes the fire of the electrical equipment through the nozzle 9, and reduces the circulation of air in the closed space, thereby also having a flame retardant effect.

[0034] Compared with the related art, the high and low voltage electrical equipment protection isolation device provided by the utility model has the following beneficial effects:

[0035] The utility model provides a protective isolation device for high and low voltage electrical equipment. When the temperature is too high and a fire occurs, the electrical fire sensor sends a signal, the valve of the fire extinguishing box is opened and the electric telescopic rod drives the closing plate to move upward, the connecting rod on the closing plate moves upward, so that the baffle blocks the air outlet, the closing plate fits with the annular baffle to form a closed space, and the dry powder in the fire extinguishing box extinguishes the fire of the electrical equipment through the nozzle, so the electrical equipment can be extinguished in all directions at the first time, and the fire can be prevented from spreading to the outside and causing greater losses. The air circulation is reduced in the closed space, so that a flame retardant effect can be achieved to prevent the fire from expanding.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high and low voltage electrical equipment protection isolation device, characterized in that: It comprises a mounting frame (1), wherein the middle part of the top of the mounting frame (1) forms a mounting position, a back panel (2) is arranged behind the upper surface of the mounting frame (1), and half frames (3) are rotatably arranged on both the left and right sides of the back panel (2), and when the two half frames (3) are rotated inwards and closed, they form a complete box with the back panel (2); A mounting frame (4) is provided at the bottom of the mounting frame (1), an annular baffle (5) is provided on the inner wall of the mounting frame (4), a plurality of air inlets (10) are provided on the surface of the mounting frame (4) and below the annular baffle (5), an air outlet (11) is provided on the top of the half frame (3), a closing plate (6) is provided in the mounting frame (4) and below the annular baffle (5) in a manner that can be lifted and lowered, a fire extinguishing box (7) is provided on the lower surface of the closing plate (6), a plurality of supporting columns (8) are provided on the upper surface of the closing plate (6) and at the inner edge of the annular baffle (5), a nozzle (9) is provided on the supporting column (8) toward the middle of the box, and when the closing plate (6) moves upward, the annular baffle (5), the closing plate (6) and the box form a closed space.

2. The high and low voltage electrical equipment protection isolation device according to claim 1 is characterized in that: Rotating shafts (12) are provided on both the left and right sides of the back plate (2), and the two rotating shafts (12) are respectively fixedly connected to the two half-frames (3).

3. The high and low voltage electrical equipment protection isolation device according to claim 1 is characterized in that: A dehumidifier is arranged in the air inlet (10), and an exhaust fan is arranged in the air outlet (11).

4. The high and low voltage electrical equipment protection isolation device according to claim 1 is characterized in that: An electrical fire sensor (15) is arranged on the front side of the back plate (2), and a supporting leg (16) is arranged at the bottom of the mounting frame (1) and on the periphery of the mounting frame (4).

5. The high and low voltage electrical equipment protection isolation device according to claim 1 is characterized in that: An electric telescopic rod (17) is arranged at the bottom of the middle of the inner cavity of the installation frame (4) and below the closing plate (6), and limiting columns (18) penetrating the closing plate (6) are arranged at the bottom of the inner cavity of the installation frame (4) and on both sides of the electric telescopic rod (17).

6. The high and low voltage electrical equipment protection isolation device according to claim 1 is characterized in that: A connecting rod (19) is provided on the upper surface of the closing plate (6) and below the plurality of air outlets (11), and a baffle (20) is provided on the upper surface of each connecting rod (19).

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