Protective power distribution cabinet for open circuit isolation

Abstract

The invention relates to the technical field of power distribution cabinets, and discloses a protective power distribution cabinet for open circuit isolation, which comprises an insulation cabinet, the insulation cabinet is of a rectangular cabinet body structure, one side of an opening of the insulation cabinet is rotatably connected with an opening and closing door, and the bottom end of the insulation cabinet is provided with a supporting base. The internal space of the insulation cabinet is separated by the first mounting plate and the second mounting plate, and the whole power distribution cabinet is made of high-strength insulation materials, so that the power distribution cabinet has good fireproof, moisture-proof and dustproof performance, electrical equipment in the power distribution cabinet can be effectively protected, the service life of the equipment is prolonged, and damage to components in the power distribution cabinet is reduced; an installation space is provided for the insulation frame along with an opening formed in the second installation plate, the first insulation butt-joint plate and the second insulation butt-joint plate which are located in the insulation frame provide an open-circuit electronic insulation space for the cable, an insulation sealing environment is provided for connection and connection positions of the cable, and the electron flowing direction of the damaged part of the cable is further limited.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to a circuit-breaking and isolating protective power distribution cabinet. Background Art

[0002] In modern power systems, distribution cabinets play a vital role as key equipment for power distribution and control. Distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets. They are the final equipment of the distribution system. Distribution cabinets are used in places where the load is relatively dispersed and there are fewer circuits; motor control centers are used in places where the load is concentrated and there are more circuits. They are used to distribute the power of a circuit of the upper-level distribution equipment to the nearest load. Distribution cabinets are a general term for motor control centers. However, traditional distribution cabinets often have some shortcomings and defects in circuit breaking and isolation: With the continuous growth of electricity demand and the increasing complexity of power systems, higher requirements are placed on the safety and reliability of distribution cabinets. In actual operation, circuit breaks may occur due to various reasons, such as short circuit failure, overload, equipment aging, etc. When a circuit break occurs, the lack of effective isolation structure and environment causes problems with internal components.

[0003] In view of the above problems, it is urgent to carry out innovative design based on the original distribution cabinet. Summary of the invention

[0004] The purpose of the present invention is to provide a protective distribution cabinet with circuit breaker isolation to solve the problem that the above background technology puts forward higher requirements on the safety and reliability of the distribution cabinet. In actual operation, due to various reasons, such as short circuit failure, overload, equipment aging, etc., the circuit may be broken, and when the circuit breaks, there is a lack of effective isolation structure and environment, which causes problems with internal components.

[0005] To achieve the above object, the present invention provides the following technical solutions: a circuit-breaking and isolating protective power distribution cabinet, comprising an insulating cabinet, which is arranged as a rectangular cabinet structure, one side of the opening of the insulating cabinet is rotatably connected with an opening and closing door, and a supporting base is installed at the bottom of the insulating cabinet, and a ventilation top cover is installed at the top of the insulating cabinet, and a closed power distribution cabinet body structure is formed through the insulating cabinet and the opening and closing door; The opening and closing door is located on the inner wall of the insulating cabinet and is provided with a mounting plate 1, and a strip opening is provided inside the mounting plate 1, a connecting plate is slidably connected in the strip opening of the mounting plate 1, and positioning pins are provided at both ends of the connecting plate, and the positioning pins pass through both sides of a strip opening of the mounting plate, and the connecting plate is installed with the current and voltage sensor through bolts; A second mounting plate is installed inside the insulating cabinet, the bottom end of the second mounting plate is slidably connected to an insulating frame, and a perforated plate is installed at the top of the insulating frame, the bottom end of the perforated plate is snap-connected to a lifting frame, and the lifting frame is composed of a lifting column and a plate body with a cylindrical protrusion structure, and the lifting column of the lifting frame is installed at the bottom end of the insulating frame, and a line isolation protection component is installed inside the second mounting plate, which is used to detect cables connected through the holes of the second mounting plate, and protect instruments installed on the surface of the second mounting plate; A positioning frame passes through the bottom end slide rail inside the second mounting plate, an insulating isolation plate is arranged inside the positioning frame, and the insulating isolation plate is arranged in a vertical direction with the second mounting plate, the top end of the second mounting plate passes through the internal opening of the positioning plate, and the positioning plate and the insulating isolation plate are arranged parallel, a strip opening passed through by a cable is arranged on one side of the positioning plate, and an insulating rod is arranged inside the strip opening of the positioning plate.

[0006] By adopting the above technical solution, the power distribution cabinet can provide protection for cables and current overflow in the circuit during use.

[0007] Preferably, the insulating frame is located at the bottom end of the inner wall of the insulating cabinet, an opening is provided at the upper end of the insulating frame, and a circuit breaker is installed inside the insulating frame.

[0008] By adopting the above technical solution, the circuit breaker installed inside is protected through the insulating frame, which facilitates the cable splitting and installation.

[0009] Preferably, the circuit of the circuit breaker passes through the reserved openings on both sides of the lifting frame and the holes inside the perforated plate, and a gap is left between the perforated plate and the two bottom ends of the mounting plate.

[0010] By adopting the above technical solution, the perforated plate is installed in a limited position through a lifting frame.

[0011] Preferably, the cross section of the positioning frame is set to a T-shaped frame structure, and bolts mounted with the second mounting plate are arranged on both sides of the positioning frame, and one end of the guide ring is symmetrically rotatably connected to one side of the second mounting plate.

[0012] By adopting the above technical solution, the T-shaped frame body passing through the positioning frame provides a corresponding installation space for easy support.

[0013] Preferably, the line isolation protection component comprises: An insulating frame is installed through the inside of the second mounting plate, and a gap is left between the insulating frame and one side of the insulating isolation plate; Insulating docking plate 1, which is installed on one side inside the insulating frame; A docking limit ring, which is evenly installed inside the insulating docking plate 1; A second insulating butt joint plate, which is installed on the other side of the insulating frame; Cable butt joints, which are evenly installed inside the second insulating butt joint plate; A limiting plate 1, which is symmetrically mounted at the upper and lower ends of the inner wall of the insulating frame; An insulating spring, which is symmetrically arranged on one side of the limiting plate; A second limiting plate is equidistantly mounted on the inner wall of the insulating frame, and the second limiting plate is located in the gap between the butt limiting ring and the cable butt joint; A hollow cylinder is symmetrically installed inside the second limiting plate, and the hollow cylinder is symmetrically provided with four arc-shaped openings; An electroshrinkable copper foil is installed inside the hollow tube, and the electroshrinkable copper foil abuts against the inner layer of the arc-shaped opening of the hollow tube; A magnetic plug is installed at one end of the electroconstrictive copper foil, and the magnetic plug is engaged and connected with two surfaces of the insulating docking plate.

[0014] By adopting the above technical solution, the line isolation protection component is installed to limit the line.

[0015] Preferably, the insulating docking plate 1 and the insulating docking plate 2 are both provided with mounting holes in a matrix shape, and the insulating docking plate 1 and the insulating docking plate 2 are plates made of insulating rubber.

[0016] By adopting the above technical solution, the holes inside the insulating docking plate 1 and the insulating docking plate 2 are set to facilitate the installation of the cable docking connector and the docking limit ring.

[0017] Preferably, the mounting holes are arranged in parallel inside the insulating docking plate 1 and the insulating docking plate 2, and the mounting hole of the insulating docking plate 1 is penetrated by the docking limit ring, and the mounting hole of the insulating docking plate 2 is penetrated by the cable docking connector.

[0018] By adopting the above technical solution, corresponding holes are opened inside the insulating docking plate through the installation holes for installation.

[0019] Preferably, the cable butt joint and the butt limiting ring are symmetrically arranged, and a hole through which the cable passes is provided inside the butt limiting ring.

[0020] By adopting the above technical solution, as the cable butt joint cooperates with the butt limit ring, a coordinated process is provided for current diversion and circulation between multiple components.

[0021] Preferably, the four arc-shaped openings of the hollow tube face the cable joints and the docking limit ring positions on both sides, and the hollow tube is penetrated by a magnetic suction pin, and the magnetic suction pin is made of insulating material.

[0022] By adopting the above technical solution, the opening of the hollow tube provides a sensing area for the arc abnormally generated by the cable, which facilitates the contact of the internal copper foil.

[0023] Preferably, an insulating sleeve is installed in the pipe of the guide ring, and sound and light alarms are symmetrically arranged on the outer wall of the guide ring, and the energized metal port of the sound and light alarm is close to one side of the insulating sleeve.

[0024] By adopting the above technical solution, an installation space is provided for the insulating sleeve through the guide ring, and a centralized bundling environment is provided for the cables.

[0025] Compared with the prior art, the invention has the following beneficial effects: the circuit-breaking and isolating protective distribution cabinet: 1. The internal space of the insulation cabinet is separated by the installation plate 1 and the installation plate 2. Since the whole is made of high-strength insulation material, it has good fireproof, moisture-proof and dust-proof performance, can effectively protect the electrical equipment inside the distribution cabinet, extend the service life of the equipment, and reduce damage to the internal components of the distribution cabinet. With the opening set inside the installation plate 2 to provide installation space for the insulation frame, the insulation docking plate 1 and the insulation docking plate 2 located inside the insulation frame provide the cable with an electronic insulation space for disconnection, maintain an insulating and sealed environment for the cable connection and connection, further limit the direction of the electron flow of the damaged part of the cable, avoid current leakage to the outside, and provide an isolation environment for the disconnected line; 2. The second limit plate arranged inside the insulating frame is a hollow tube that provides a protective space for the leakage electrons through the electroshrinkable copper foil sheet arranged inside the hollow tube. The cable electrons affected by the leakage wander through the electroshrinkable copper foil sheet arranged inside the hollow tube, so that the copper foil of the electroshrinkable copper foil sheet is energized. Due to the resistance thermal effect, the copper foil will be heated. Since the copper foil is energized and contracted, the magnetic plug is separated from the magnetic plate at the socket of the second insulating docking plate, so that the internal connection line is directly disconnected, providing protection and isolation for the circuit. As the second insulating docking plate protrudes, it is easy to find and handle faults in time, thereby improving the operating stability of the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the insulation cabinet and the opening and closing door of the present invention; Figure 3 It is a schematic diagram of the overall internal three-dimensional structure of the present invention; Figure 4 It is a schematic diagram of the overall internal side-section stereoscopic structure of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the installation plate 2 and the guide ring of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the installation plate 2 and the positioning plate of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the insulating frame and the perforated plate installed in the present invention; Figure 8 It is a schematic diagram of a three-dimensional structure of the insulating frame of the present invention in side section; Fig. 9 It is a schematic diagram of the disassembled three-dimensional structure of the butt-jointing limit ring and the cable butt joint of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the electroshrinkable copper foil and the magnetic plug being separated according to the present invention.

[0027] In the figure: 1. Insulation cabinet; 2. Support base; 3. Ventilation top cover; 4. Opening and closing door; 5. Mounting plate 1; 6. Connecting plate; 7. Positioning pin; 8. Current and voltage sensor; 9. Mounting plate 2; 10. Insulation frame; 11. Perforated plate; 12. Lifting frame; 13. Circuit breaker; 14. Positioning frame; 15. Insulation isolation plate; 16. Positioning plate; 17. Insulation rod; 18. Insulation frame; 19. Insulation docking plate 1; 20. Docking limit ring; 21. Mounting hole; 22. Insulation docking plate 2; 23. Cable docking joint; 24. Limiting plate 1; 25. Insulation spring; 26. Limiting plate 2; 27. Hollow tube; 28. Electrocontractive copper foil; 29. ​​Magnetic plug; 30. Insulation sleeve; 31. Guide ring; 32. Sound and light alarm. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 10 , the present invention provides a technical solution: a circuit-breaking and isolating protective power distribution cabinet; The insulating cabinet 1 is configured as a rectangular cabinet structure, an opening and closing door 4 is rotatably connected to one side of the opening of the insulating cabinet 1, a supporting base 2 is installed at the bottom of the insulating cabinet 1, and a ventilation top cover 3 is installed at the top of the insulating cabinet 1, and a closed distribution cabinet body structure is formed through the insulating cabinet 1 and the opening and closing door 4; The opening and closing door 4 is located on the inner wall of the insulating cabinet 1 and is provided with a mounting plate 5, and a strip opening is provided inside the mounting plate 5, a connecting plate 6 is slidably connected in the strip opening of the mounting plate 5, and positioning pins 7 are provided at both ends of the connecting plate 6, and the positioning pins 7 pass through both sides of the strip opening of the mounting plate 5, and the connecting plate 6 is installed with the current and voltage sensor 8 through bolts; A mounting plate 29 is installed inside the insulating cabinet 1, an insulating frame 10 is slidably connected to the bottom end of the mounting plate 29, and a perforated plate 11 is installed at the top end of the insulating frame 10, a lifting frame 12 is snap-connected to the bottom end of the perforated plate 11, and the lifting frame 12 is composed of a lifting column and a plate body with a cylindrical protrusion structure, and the lifting column of the lifting frame 12 is installed at the bottom end of the insulating frame 10, a line isolation protection component is installed inside the mounting plate 29, which is used to detect the cables connected through the holes of the mounting plate 29, and to protect the instruments installed on the surface of the mounting plate 29, the insulating frame 10 is located at the bottom end of the inner wall of the insulating cabinet 1, and an opening is provided at the upper end of the insulating frame 10, and a circuit breaker 13 is installed inside the insulating frame 10, and the circuit of the circuit breaker 13 passes through the reserved openings on both sides of the lifting frame 12 and the holes inside the perforated plate 11, and a gap is left between the perforated plate 11 and the bottom end of the mounting plate 29; A positioning frame 14, which passes through the bottom end slide rail inside the mounting plate 29, an insulating isolation plate 15 is arranged inside the positioning frame 14, and the insulating isolation plate 15 is arranged in a vertical direction with the mounting plate 29, the top of the mounting plate 29 passes through the internal opening of the positioning plate 16, and the positioning plate 16 and the insulating isolation plate 15 are arranged in parallel, a strip opening through which a cable passes is arranged on one side of the positioning plate 16, and an insulating rod 17 is arranged inside the strip opening of the positioning plate 16, the cross section of the positioning frame 14 is arranged as a T-shaped frame structure, and bolts installed with the mounting plate 29 are arranged on both sides of the positioning frame 14, and one end of the guide ring 31 is symmetrically connected to one side of the mounting plate 29, an insulating sleeve 30 is installed in the pipe of the guide ring 31, and an audible and visual alarm 32 is symmetrically arranged on the outer wall of the guide ring 31, and the energized metal port of the audible and visual alarm 32 is close to one side of the insulating sleeve 30; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, the main structure of the power distribution cabinet is assembled through the insulation cabinet 1, the support base 2, the ventilation top cover 3 and the opening and closing door 4. Figure 1As shown, the mounting plate 5 located on the surface of the opening and closing door 4 is used to limit the installation of the current and voltage sensor 8. The current and voltage sensor 8 is connected to the power equipment inside the device, which is convenient for detecting the current and voltage status in the cable. The connecting plate 6 installed on the back of the current and voltage sensor 8 is kept stably installed inside the mounting plate 5 under the limit cooperation of the positioning pins 7 at both ends. It is kept installed with the opening and closing door 4 through the positioning pins 7, which is convenient for fixing the current and voltage sensor 8 to be stably installed. The supporting base 2 located at the bottom end of the insulating cabinet 1 supports the whole to remain stable. The ventilation top cover 3 installed on the top of the insulating cabinet 1 is equipped with a fan as needed to circulate and cool the internal gas. The insulating The frame 10 is connected for cable installation through the circuit breaker 13 arranged inside. The perforated plate 11 at the top of the insulating frame 10 is used to sort out the cable installation position entering the inside. The plate body of the lifting frame 12 further limits the cable accumulation condition. The lifting column inside the lifting frame 12 lifts the plate body of the lifting frame 12 to provide an air flow environment for the top of the circuit breaker 13 to avoid high temperature accumulation at the working position of the circuit breaker 13. The mounting plate 29 located at the top of the insulating frame 10 and slidingly connected is used to separate the internal space of the insulating cabinet 1, and limit the placement of cables and the mechanical installation of components. The positioning frame 14 installed in the opening at the lower end of the mounting plate 29 provides support for the installation of the insulating isolation plate 15, such as Figure 2-4 As shown, the bottom support for component installation is located on the positioning plate 16 sliding on the surface of the mounting plate 9, as shown in FIG. Figure 2-Figure 4 As shown, the insulating rod 17 slidably connected in the opening on one side of the positioning plate 16 is used to organize the cables and limit the activity space of the cables to avoid excessive interference between them. When a single cable is damaged and discharged, excessive electron radiation is directly directed to the surrounding cables. The insulating rod 17 is used to separate and isolate the cables entering the positioning plate 16. The main cable entering the insulation cabinet 1 passes through the guide ring 31 rotatably connected to the bottom side of the mounting plate 29. With the limitation of the semi-arc insulation patches on both sides of the main cable and the insulation sleeve 30, the sound and light alarm 32 set on one side of the insulation sleeve 30, as shown in FIG. Figure 5-Figure 7 As shown, the metal at the power connection of the sound and light alarm 32 receives the arc power overflowing from the damaged part of the main cable, thereby emitting a light and sound warning to remind the staff of the damaged location; The line isolation protection components include: The insulating frame 18 is installed through the inside of the mounting plate 2 9, and a gap is left between the insulating frame 18 and one side of the insulating isolation plate 15; The insulating docking plate 19 is installed on one side of the inner part of the insulating frame 18. The insulating docking plate 19 and the insulating docking plate 22 are both provided with mounting holes 21 in a matrix shape. The insulating docking plate 19 and the insulating docking plate 22 are plates made of insulating rubber. The mounting holes 21 are arranged in parallel inside the insulating docking plate 19 and the insulating docking plate 22. The mounting holes 21 of the insulating docking plate 19 are penetrated by the docking limit ring 20, and the mounting holes 21 of the insulating docking plate 22 are penetrated by the cable docking connector 23. A docking limit ring 20, which is evenly mounted inside the insulating docking plate 19; The second insulating docking plate 22 is mounted on the other side of the insulating frame 18; The cable joint 23 is evenly mounted inside the insulating joint plate 22. The cable joint 23 is symmetrically arranged with the joint limit ring 20, and the joint limit ring 20 is provided with a hole through which the cable passes; A limit plate 24, which is symmetrically mounted on the upper and lower ends of the inner wall of the insulating frame 18; Insulating spring 25, which is symmetrically arranged on one side of the limiting plate 24; The second limiting plate 26 is equidistantly mounted on the inner wall of the insulating frame 18, and the second limiting plate 26 is located in the gap between the butt limiting ring 20 and the cable butt joint 23; The hollow cylinder 27 is symmetrically mounted inside the second limiting plate 26, and the hollow cylinder 27 is symmetrically provided with four arc-shaped openings, the four arc-shaped openings of the hollow cylinder 27 are oriented toward the cable docking connector 23 and the docking limiting ring 20 on both sides, and the hollow cylinder 27 is penetrated by a magnetic plug 29, and the magnetic plug 29 is made of insulating material; The electroshrinkable copper foil 28 is installed inside the hollow tube 27, and the electroshrinkable copper foil 28 abuts against the inner layer of the arc-shaped opening of the hollow tube 27; A magnetic plug 29 is installed at one end of the electroconductive copper foil 28, and the magnetic plug 29 is connected to the surface of the insulating docking plate 22 by snapping; In conjunction with the accompanying drawings Figure 1-Figure 10 As shown, as the insulating frame 18 is installed into the hole of the mounting plate 29, as the two ends of the insulating frame 18 are installed by the insulating docking plate 19 and the insulating docking plate 22 respectively, the cable docking connector 23 located inside the insulating docking plate 22 is used to dock one end of the cable connected to the inside, so as to facilitate the flow of electricity between the cable docking connector 23 and the cable connected inside the docking limit ring 20, and the hollow cylinder 27 arranged above and below the connection between the docking limit ring 20 and the cable docking connector 23 is installed inside the insulating frame 18 with the restriction of the limit plate 26, and a magnetic sheet is arranged in the socket at the connection between the insulating docking plate 22 and the magnetic plug 29, so as to facilitate the connection with the magnetic plug 29, and the magnetic plug 29 is connected with the electroconductive copper foil 28 and maintained at one end of the hollow cylinder 27, as shown in FIG. Figure 8-Figure 10As shown, when the cable line installed inside the insulating frame 18 is damaged and an arc or current leakage occurs, electrons wander inside the insulating frame 18 and are received by the electro-contractive copper foil 28, so that the electro-contractive copper foil 28 is energized and heated and contracted by the resistance thermal effect, so that the magnetic suction pin 29 is separated from the insulating docking plate 22. At this time, the limit plates 1 24 arranged at both ends of the insulating frame 18 are pushed by one end of the insulating spring 25 so that the insulating docking plate 22 slides outward and separates from the cable here. At this time, the insulating docking plate 22 of the insulating frame 18 remains connected to avoid current leakage and achieve isolation in the circuit-breaking state. At the same time, the protruding insulating docking plate 22 reminds the maintenance personnel of the damaged position of the cable, thereby protecting the components inside the device, effectively protecting the electrical equipment inside the distribution cabinet, extending the service life of the equipment, and reducing damage to the components inside the distribution cabinet.

[0030] Working principle: When using the protective distribution cabinet with circuit breaker isolation, first, the externally energized cable passes through one side of the insulating cabinet 1, and after the cable is arranged, it passes through the insulating sleeve 30 located inside the guide ring 31. The arc caused by the damaged surface of the cable inside the insulating sleeve 30 is isolated by the insulating sleeve 30. At the same time, the sound and light alarm 32 lights up due to the wandering of electrons, prompting the staff that the internal cable has a circuit breaker condition. As the mounting plate 2 9 is slidably connected and separated from the insulating frame 10, the cable passes through the hole of the perforated plate 11 to connect to the circuit breaker 13. As the cable passes through the internal hole of the insulating isolation plate 15 and is connected to the current control device and voltage components installed at the upper end, the insulating frame 18 located inside the mounting plate 2 9 forms a cable pair under the restriction of the insulating docking plate 1 19 and the insulating docking plate 2 22. At the connection port, the cable passes through the docking limit ring 20, so that the docking limit ring 20 and the cable connected to the inside of the insulating frame 18 are located at an oblique angle around the hollow tube 27. When the cable leaks and arcs, the electro-shrinkable copper foil 28 located inside the hollow tube 27 is connected to the electro-shrinkable copper foil 28 under the conditions of arc and leakage. Due to the resistive thermal effect, the internal copper foil of the electro-shrinkable copper foil 28 is heated and contracted to drive the magnetic plug 29 to enter the hollow tube 27, so that the magnetic plug 29 and the insulating docking plate 22 are quickly separated and contracted, and the insulating spring 25 is no longer restricted from stretching and pushing the insulating docking plate 22 away, so that the docking limit ring 20 and the cable docking connector 23 are quickly separated and disconnected, providing protection for internal components.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit-breaking and isolating protective distribution cabinet, comprising: An insulating cabinet (1) is arranged as a rectangular cabinet structure, wherein an opening side of the insulating cabinet (1) is rotatably connected to an opening and closing door (4), a supporting base (2) is installed at the bottom end of the insulating cabinet (1), and a ventilation top cover (3) is installed at the top end of the insulating cabinet (1), and a closed distribution cabinet body structure is formed through the insulating cabinet (1) and the opening and closing door (4); The invention is characterized in that: the opening and closing door (4) is provided with a mounting plate (5) on the inner wall surface of the insulating cabinet (1), and a strip opening is provided inside the mounting plate (5), a connecting plate (6) is slidably connected in the strip opening of the mounting plate (5), and positioning pins (7) are provided at both ends of the connecting plate (6), and the positioning pins (7) pass through both sides of the strip opening of the mounting plate (5), and the connecting plate (6) is installed with the current and voltage sensor (8) through bolts; A second mounting plate (9) is mounted inside the insulating cabinet (1), the bottom end of the second mounting plate (9) is slidably connected to an insulating frame (10), and a perforated plate (11) is mounted on the top of the insulating frame (10), the bottom end of the perforated plate (11) is snap-connected to a lifting frame (12), and the lifting frame (12) is composed of a lifting column and a plate body with a cylindrical protrusion structure, and the lifting column of the lifting frame (12) is mounted on the bottom end of the insulating frame (10), and a line isolation protection component is installed inside the second mounting plate (9), which is used to detect cables connected through the holes of the second mounting plate (9) to protect instruments installed on the surface of the second mounting plate (9); A positioning frame (14) passes through the bottom end slide rail inside the second mounting plate (9); an insulating isolation plate (15) is arranged inside the positioning frame (14), and the insulating isolation plate (15) is arranged in a vertical direction with the second mounting plate (9); the top end of the second mounting plate (9) passes through the internal opening of the positioning plate (16), and the positioning plate (16) and the insulating isolation plate (15) are arranged in parallel; a strip opening is arranged on one side of the positioning plate (16) through which a cable passes, and an insulating rod (17) is arranged inside the strip opening of the positioning plate (16).

2. A circuit-breaking and isolating protective distribution cabinet according to claim 1, characterized in that: The insulating frame (10) is located at the bottom end of the inner wall surface of the insulating cabinet (1), an opening is provided at the upper end of the insulating frame (10), and a circuit breaker (13) is installed inside the insulating frame (10).

3. A circuit-breaking and isolating protective distribution cabinet according to claim 2, characterized in that: The circuit of the circuit breaker (13) passes through the reserved openings on both sides of the lifting frame (12) and the internal holes of the perforated plate (11), and a gap is left between the perforated plate (11) and the bottom end of the second mounting plate (9).

4. The circuit-breaking and isolating protective distribution cabinet according to claim 1 is characterized in that: The cross section of the positioning frame (14) is configured as a T-shaped frame structure, and bolts for mounting with the second mounting plate (9) are provided on both sides of the positioning frame (14), and one side of the second mounting plate (9) is symmetrically rotatably connected to one end of the guide ring (31).

5. The circuit-breaking and isolating protective power distribution cabinet according to claim 1, characterized in that: The line isolation protection component comprises: An insulating frame (18) is installed through the inside of the second mounting plate (9), and a gap is left between the insulating frame (18) and one side of the insulating isolation plate (15); An insulating docking plate (19) mounted on one side of the interior of the insulating frame (18); A docking limit ring (20) evenly mounted inside the insulating docking plate 1 (19); A second insulating docking plate (22) mounted on the other side of the insulating frame (18); A cable butt joint (23) evenly mounted inside the second insulating butt joint plate (22); A limiting plate (24) is symmetrically mounted on the upper and lower ends of the inner wall of the insulating frame (18); An insulating spring (25) symmetrically arranged on one side of the limiting plate (24); A second limiting plate (26) is equidistantly mounted on the inner wall of the insulating frame (18), and the second limiting plate (26) is located in the gap between the docking limiting ring (20) and the cable docking joint (23); A hollow cylinder (27) is symmetrically mounted inside the second limiting plate (26), and the hollow cylinder (27) is symmetrically provided with four arc-shaped openings; An electroshrinkable copper foil (28) is installed inside the hollow cylinder (27), and the electroshrinkable copper foil (28) abuts against the inner layer of the arc-shaped opening of the hollow cylinder (27); A magnetic attraction plug (29) is mounted on one end of the electroconstrictive copper foil (28), and the magnetic attraction plug (29) is engaged and connected with the surface of the second insulating docking plate (22).

6. A circuit-breaking and isolating protective distribution cabinet according to claim 5, characterized in that: The insulating butt joint plate 1 (19) and the insulating butt joint plate 2 (22) are both provided with mounting holes (21) in a matrix shape, and the insulating butt joint plate 1 (19) and the insulating butt joint plate 2 (22) are plates made of insulating rubber.

7. A circuit-breaking and isolating protective distribution cabinet according to claim 6, characterized in that: The mounting holes (21) are located inside the insulating docking plate 1 (19) and the insulating docking plate 2 (22) and are arranged in parallel, and the mounting hole (21) of the insulating docking plate 1 (19) is penetrated by the docking limit ring (20), and the mounting hole (21) of the insulating docking plate 2 (22) is penetrated by the cable docking connector (23).

8. The circuit-breaking and isolating protective distribution cabinet according to claim 5, characterized in that: The cable butt joint (23) and the butt stop ring (20) are symmetrically arranged, and a hole through which the cable passes is provided inside the butt stop ring (20).

9. The circuit-breaking and isolating protective distribution cabinet according to claim 5, characterized in that: The four arc-shaped openings of the hollow cylinder (27) face the cable joints (23) and the docking limit rings (20) on both sides, and the hollow cylinder (27) is penetrated by a magnetic plug (29), and the magnetic plug (29) is made of insulating material.

10. The circuit-breaking and isolating protective power distribution cabinet according to claim 4, characterized in that: An insulating sleeve (30) is installed in the pipe of the guide ring (31), and an audible and visual alarm (32) is symmetrically arranged on the outer wall of the guide ring (31), and an energized metal port of the audible and visual alarm (32) is close to one side of the insulating sleeve (30).

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