Safety ring main unit

Abstract

The invention relates to the technical field of high-voltage looped network switch cabinets, in particular to a safety type looped network cabinet which comprises a looped network cabinet body and a junction box fixedly installed on the looped network cabinet body, a plurality of binding posts are fixedly installed on the inner wall of the junction box, and cables are fixedly connected to the inner walls of the binding posts. An electric telescopic rod is fixedly installed on the inner wall of the junction box, the output end of the electric telescopic rod is fixedly connected with a first moving frame, a first guide rod and a second guide rod are slidably installed on the inner wall of the first moving frame, and one end of the first guide rod and one end of the second guide rod are fixedly connected with a second moving frame; the beneficial effects of the invention are that after a plurality of cables are pressed and bent to deform a part, air flow can penetrate through the cables and blow to the inner wall of the junction box behind the cables, and then when the cables are pressed and deformed to face the other direction, the air flow originally blown to the inner wall of the junction box rebounds and blows to the reset innermost cable, so that the inner wall of the junction box is prevented from being damaged. And the heat dissipation effect of the cable is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of high-voltage ring network switch cabinets, in particular to a safe ring network switch cabinet. BACKGROUND

[0002] The ring network switch cabinet is a key equipment for ring network power supply and terminal power supply in a power system, and is particularly suitable for urban power distribution networks, industrial parks, commercial centers, residential areas and the like. Compared with a traditional high-voltage switch cabinet, the ring network switch cabinet realizes the functions of ring network connection, fault isolation and transfer control. In some low-voltage and small-load power consumption environments (such as residential buildings and office buildings), a compact ring network cabinet (such as an SF6 gas-filled cabinet, an environmentally friendly gas cabinet and a solid insulation cabinet) is usually used.

[0003] The compact ring network cabinet is designed to be relatively small and compact. In order to adapt to this structure, special small-sized cables and cable joints are used. Such cables can be directly touched and have a small diameter. The cable insulation layer is prone to deformation. At present, the compact ring network switch cabinet on the market needs to connect multiple small-diameter cables to the terminal through the terminal box at the wiring inlet of the switch cabinet, and then divide multiple control lines and branch cables from the terminal to connect to the switch cabinet. Therefore, multiple main cables are concentrated in the terminal box and connected through the terminal box. During operation, multiple cables are prone to generate a large amount of heat. In order to improve the heat dissipation efficiency of heat conduction, the terminal box is usually provided with a plurality of heat dissipation openings or directly uses an open terminal box. Therefore, a large amount of dust is easily accumulated on the surface of the cable in the terminal box. The dust also affects the heat exchange between the cable itself and the air and the airflow during the operation of the heat dissipation fan. Over a long period of time, insufficient heat dissipation is prone to cause safety hazards. Therefore, a safe ring network switch cabinet is needed to solve the problem. SUMMARY

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme: a safe ring network switch cabinet, comprising a ring network switch cabinet body, a terminal box fixedly installed on the ring network switch cabinet body, a plurality of terminal posts fixedly installed on the inner wall of the terminal box, a cable fixedly connected to the inner wall of the terminal post, an electric telescopic rod fixedly installed on the inner wall of the terminal box, a first moving frame fixedly connected to the output end of the electric telescopic rod, a first guide rod and a second guide rod slidingly installed on the inner wall of the first moving frame, a second moving frame fixedly connected to one end of the first guide rod and the second guide rod, a plurality of through holes formed in the second moving frame, a first cleaning brush fixedly connected to the inner wall of the through hole and used for cleaning the cable, and a third moving frame sleeved on the outer wall of the cable, a plurality of second cleaning brushes fixedly installed on the third moving frame.

[0005] Preferably, two second return springs are sleeved on the cable, one end of the second return spring is fixedly connected to the outer wall of the third movable frame, and the other end of the second return spring is fixedly connected to the inner wall of the junction box.

[0006] Preferably, the outer wall of the third movable frame is provided with a second abutting slope, the outer wall of the first movable frame is provided with a first abutting slope, and both the second abutting slope and the first abutting slope are set as inclined surfaces, and the outer contours of the second abutting slope and the first abutting slope match each other.

[0007] Preferably, a first return spring is sleeved on the first guide rod and the second guide rod, one end of the first return spring is fixedly connected to the inner wall of the first moving frame, and the other end of the first return spring is fixedly connected to the outer wall of the second moving frame.

[0008] Preferably, a transmission ball is rotatably mounted on one end of the first guide rod, a first track groove is provided on the inner wall of the junction box, and a second track groove is also provided on the inner wall of the junction box. The second track groove is configured as a wave track groove, and the first track groove and the second track groove are interconnected.

[0009] Preferably, the inner walls of the first and second track grooves are fixedly connected with a plurality of evenly distributed abutment blocks, and the abutment blocks are configured in a hemispherical shape.

[0010] Preferably, the junction box has two air inlets, a cooling fan is fixedly installed on the inner wall of the air inlet, a dustproof screen is fixedly installed on the air outlet of the cooling fan, and a wiring groove for passing cables through the junction box is provided.

[0011] Preferably, a reinforcing plate is fixedly connected to the outer wall of the main body of the ring main unit, a junction box is fixedly installed on the outer wall of the main body of the ring main unit, and the junction box is fixedly installed on the outer wall of the junction box.

[0012] Preferably, an isolating switch and an energy storage switch are fixedly installed on the outer wall of the main body of the ring main unit.

[0013] Preferably, a control panel is fixedly installed on the outer wall of the junction box, and a grounding switch and an emergency stop button are fixedly installed on the outer wall of the junction box.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, after multiple cables are pressed and bent to a partial deformation, airflow can pass through the cables and blow towards the inner wall of the junction box behind the cables. Subsequently, when the cables are pressed and deformed in another direction, the airflow that was originally blown towards the inner wall of the junction box bounces back and blows towards the innermost cable after it has been reset. In particular, after the cables are pressed and deformed, the obstruction of airflow is reduced, and the airflow can be directly blown towards the inner wall of the junction box, forming a disordered airflow at the bottom of the junction box, which further improves the heat dissipation effect of the cables.

[0015] 2. In this invention, the movement of the first moving frame carries the second moving frame and multiple first cleaning brushes to reciprocate horizontally to the left and right to press the surface of the cable. This action is synchronized with the action of scraping the surface of the cable, so that the first cleaning brushes perform left and right pressing and scraping operations on the basis of lateral scraping of the cable surface, further removing the dust accumulated on the surface of the cable.

[0016] 3. In this invention, the second moving frame moves back and forth with the first cleaning brush in the front and back direction, and this back and forth reciprocating movement is synchronized with the action of scraping the cable. When the first cleaning brush scrapes the surface of the cable, it will intermittently switch to perform front, back, left and right partitioned pressing and scraping operations, which further improves the uniformity of scraping the surface of the cable.

[0017] 4. In this invention, the first cleaning brush can scrape and clean the outer wall of the cable in the vertical direction, remove dust from the outer wall of the cable in the vertical direction, and prevent dust from adhering to the surface of the cable and affecting the heat exchange and heat dissipation effect. The movement of the third moving frame will carry multiple second cleaning brushes to scrape along the outer wall of the cable in the horizontal direction, scrape away the dust on the outer wall of the cable in the horizontal direction, and further cover the scraping and cleaning range of the cable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic cross-sectional view of the junction box structure of the present invention; Figure 4 This is an enlarged schematic diagram of the junction box structure of the present invention; Figure 5 This is a schematic cross-sectional view of the junction box structure of the present invention; Figure 6 This is a cross-sectional view of the junction box of the present invention from another perspective; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 8 This is a side cross-sectional view of the junction box structure of the present invention; Figure 9 The application is Figure 8 Amplification structure schematic diagram in A of the embodiment.

[0019] In the drawings, the components represented by each reference numeral are listed as follows: 1, ring main unit body; 2, control panel; 3, disconnecting switch; 4, grounding switch; 5, wiring cabinet; 6, emergency stop button; 7, junction box; 8, energy storage switch; 9, wiring slot; 10, reinforcing plate; 11, heat dissipation fan; 12, dust screen; 13, cable; 14, air inlet; 15, electric telescopic rod; 16, first moving frame; 17, first abutting slope; 18, first guide rod; 19, transmission ball; 20, second guide rod; 21, first track groove; 22, second track groove; 23, abutting block; 24, first reset spring; 25, second moving frame; 26, through hole; 27, first cleaning brush; 28, third moving frame; 29, second cleaning brush; 30, second reset spring; 31, second abutting slope; 32, wiring post. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work are within the protection scope of the application.

[0021] Embodiment one: This embodiment promotes the solution to the problem that the junction box 7 usually has more heat dissipation openings or directly uses an open junction box 7, so that more dust is easily accumulated in the junction box 7 on the surface of the cable, and the dust also affects the heat exchange between the cable itself and the air flow when the heat dissipation fan operates, and over time, the insufficient heat dissipation easily causes a safety hazard. Please refer to Figure 1 - Figure 9The utility model relates to a safe ring main unit, including ring main unit body 1, fixed mounting on ring main unit body 1's terminal box 7, the inner wall fixed mounting of terminal box 7 has a plurality of terminal post 32, the inner wall fixed connection of terminal post 32 has cable 13, the inner wall fixed mounting of terminal box 7 has electric telescopic handle 15, the output of electric telescopic handle 15 fixed connection has first mobile frame 16, the inner wall sliding installation of first mobile frame 16 has first guide rod 18 and second guide rod 20, one end fixed connection of first guide rod 18 and second guide rod 20 has second mobile frame 25, a plurality of through -holes 26 are set up on second mobile frame 25, the inner wall fixed connection of through -hole 26 has first cleaning brush 27 for cleaning cable 13, when first cleaning brush 27 is scraped and brushes the surface of cable 13, will be intermittent switching and carry out the partition press and brush operation left and right in front and back, further increase the uniformity of the surface of cable 13 scraping, the outer wall of cable 13 is equipped with third mobile frame 28, a plurality of second cleaning brush 29 are fixedly installed on third mobile frame 28.

[0022] The utility model relates to a safe ring main unit, including ring main unit body 1, fixed mounting on ring main unit body 1's terminal box 7, the inner wall fixed mounting of terminal box 7 has a plurality of terminal post 32, the inner wall fixed connection of terminal post 32 has cable 13, the inner wall fixed mounting of terminal box 7 has electric telescopic handle 15, the output of electric telescopic handle 15 fixed connection has first mobile frame 16, the inner wall sliding installation of first mobile frame 16 has first guide rod 18 and second guide rod 20, one end fixed connection of first guide rod 18 and second guide rod 20 has second mobile frame 25, a plurality of through -holes 26 are set up on second mobile frame 25, the inner wall fixed connection of through -hole 26 has first cleaning brush 27 for cleaning cable 13, when first cleaning brush 27 is scraped and brushes the surface of cable 13, will be intermittent switching and carry out the partition press and brush operation left and right in front and back, further increase the uniformity of the surface of cable 13 scraping, the outer wall of cable 13 is equipped with third mobile frame 28, a plurality of second cleaning brush 29 are fixedly installed on third mobile frame 28.

[0023] The utility model relates to a safe ring main unit, including ring main unit body 1, fixed mounting on ring main unit body 1's terminal box 7, the inner wall fixed mounting of terminal box 7 has a plurality of terminal post 32, the inner wall fixed connection of terminal post 32 has cable 13, the inner wall fixed mounting of terminal box 7 has electric telescopic handle 15, the output of electric telescopic handle 15 fixed connection has first mobile frame 16, the inner wall sliding installation of first mobile frame 16 has first guide rod 18 and second guide rod 20, one end fixed connection of first guide rod 18 and second guide rod 20 has second mobile frame 25, a plurality of through -holes 26 are set up on second mobile frame 25, the inner wall fixed connection of through -hole 26 has first cleaning brush 27 for cleaning cable 13, when first cleaning brush 27 is scraped and brushes the surface of cable 13, will be intermittent switching and carry out the partition press and brush operation left and right in front and back, further increase the uniformity of the surface of cable 13 scraping, the outer wall of cable 13 is equipped with third mobile frame 28, a plurality of second cleaning brush 29 are fixedly installed on third mobile frame 28.

[0024] The utility model relates to a safe ring main unit, including ring main unit body 1, fixed mounting on ring main unit body 1's terminal box 7, the inner wall fixed mounting of terminal box 7 has a plurality of terminal post 32, the inner wall fixed connection of terminal post 32 has cable 13, the inner wall fixed mounting of terminal box 7 has electric telescopic handle 15, the output of electric telescopic handle 15 fixed connection has first mobile frame 16, the inner wall sliding installation of first mobile frame 16 has first guide rod 18 and second guide rod 20, one end fixed connection of first guide rod 18 and second guide rod 20 has second mobile frame 25, a plurality of through -holes 26 are set up on second mobile frame 25, the inner wall fixed connection of through -hole 26 has first cleaning brush 27 for cleaning cable 13, when first cleaning brush 27 is scraped and brushes the surface of cable 13, will be intermittent switching and carry out the partition press and brush operation left and right in front and back, further increase the uniformity of the surface of cable 13 scraping, the outer wall of cable 13 is equipped with third mobile frame 28, a plurality of second cleaning brush 29 are fixedly installed on third mobile frame 28.

[0025] The utility model relates to a safe ring main unit, including ring main unit body 1, fixed mounting on ring main unit body 1's terminal box 7, the inner wall fixed mounting of terminal box 7 has a plurality of terminal post 32, the inner wall fixed connection of terminal post 32 has cable 13, the inner wall fixed mounting of terminal box 7 has electric telescopic handle 15, the output of electric telescopic handle 15 fixed connection has first mobile frame 16, the inner wall sliding installation of first mobile frame 16 has first guide rod 18 and second guide rod 20, one end fixed connection of first guide rod 18 and second guide rod 20 has second mobile frame 25, a plurality of through -holes 26 are set up on second mobile frame 25, the inner wall fixed connection of through -hole 26 has first cleaning brush 27 for cleaning cable 13, when first cleaning brush 27 is scraped and brushes the surface of cable 13, will be intermittent switching and carry out the partition press and brush operation left and right in front and back, further increase the uniformity of the surface of cable 13 scraping, the outer wall of cable 13 is equipped with third mobile frame 28, a plurality of second cleaning brush 29 are fixedly installed on third mobile frame 28.

[0026] Two air inlets 14 are formed on the junction box 7, the inner wall of the air inlet 14 is fixedly installed with a heat dissipation fan 11, the air outlet end of the heat dissipation fan 11 is fixedly installed with a dust screen 12, and a junction slot 9 for passing through the cable 13 is formed on the junction box 7.

[0027] The outer wall of the ring main unit body 1 is fixedly connected with a reinforcing plate 10, and the outer wall of the ring main unit body 1 is fixedly installed with a junction cabinet 5, and the junction box 7 is fixedly installed on the outer wall of the junction cabinet 5.

[0028] The outer wall of the ring main unit body 1 is fixedly installed with a disconnecting switch 3 and an energy storage switch 8.

[0029] The outer wall of the junction cabinet 5 is fixedly installed with a control panel 2, and the outer wall of the junction cabinet 5 is fixedly installed with a grounding switch 4 and an emergency stop button 6.

[0030] In this embodiment: when using the safety ring network switch cabinet, first, the cable end to be connected is inserted into the junction box 7 through the junction slot 9, and then the cable is inserted and connected through the plurality of junction columns 32 in the junction box 7, it should be noted that the cable also needs to be inserted through the plurality of through holes 26 in the second moving frame 25 and the plurality of second cleaning brushes 29.

[0031] Then during the operation of the ring network switch cabinet, the electric telescopic rod 15 can be started regularly, and after the electric telescopic rod 15 is started, the first moving frame 16 with the output end is moved upward as a whole, and when the first moving frame 16 moves upward, the second moving frame 25 moves upward synchronously, and when the second moving frame 25 moves upward, the first cleaning brush 27 in the plurality of through holes 26 moves upward synchronously, and the first cleaning brush 27 can scrape and clean the outer wall of the vertical cable 13, remove the dust on the outer wall of the vertical cable 13, and prevent the dust from adhering to the surface of the cable 13 to affect the heat exchange and heat dissipation effect.

[0032] At the same time, the heat dissipation fan 11 can be started, and after the heat dissipation fan 11 is started, the external air is blown towards the plurality of cable lines 13 through the air inlet 14, and the external air is filtered through the dust screen 12 before being blown to the cable line 13, so as to prevent dust from being accelerated into the junction box 7.

[0033] When the electric telescopic rod 15 moves upward with the first moving frame 16, the first abutting inclined surface 17 on the outer wall of the first moving frame 16 abuts against the second abutting inclined surface 31 on the outer wall of the third moving frame 28, and the abutting makes the second abutting inclined surface 31 move the third moving frame 28 towards the junction slot 9, and the movement of the third moving frame 28 drives the plurality of second cleaning brushes 29 to scrape along the outer wall of the horizontal cable 13, thereby scraping off the dust on the outer wall of the horizontal cable 13 and further covering the scraping and cleaning range of the cable 13.

[0034] When the third moving frame 28 slides along the surface of the transverse cable 13, the second reset spring 30 is compressed and taut, and when the output end of the electric telescopic rod 15 moves downward with the first moving frame 16, the first abutting slope 17 gradually releases the abutment with the second abutting slope 31, and at this time the second reset spring 30 gradually returns to its original position with the third moving frame 28, and the position through which the third moving frame 28 has moved is again cleaned by the scraping brush.

[0035] When the first moving frame 16 is moved upward by the output end of the electric telescopic rod 15, the first moving frame 16 moves upward synchronously with the second guide rod 20 and the first guide rod 18, and the upward movement of the first guide rod 18 causes the transmission ball 19 at the end of the first guide rod 18 to move upward synchronously. Since the transmission ball 19 is slidingly installed in the inner wall of the first track groove 21, the transmission ball 19 is guided by the first track groove 21 and the second track groove 22 when it slides upward, and the transmission ball 19 forces the first guide rod 18 and the first moving frame 16 to move. At this time, the first moving frame 16 moves intermittently and reciprocally in the horizontal direction to the left and right under the guidance of the second track groove 22, that is, the movement of the first moving frame 16 causes the second moving frame 25 and the plurality of first cleaning brushes 27 to reciprocally press the surface of the cable 13 in the horizontal direction to the left and right, and this action is synchronized with the action of scraping the surface of the cable 13, so that the first cleaning brushes 27 perform pressing and scraping operations to the left and right on the basis of translating and scraping the surface of the cable 13, further cleaning the dust accumulated on the surface of the cable 13.

[0036] Since the inner walls of the first track groove 21 and the second track groove 22 are provided with a plurality of abutting blocks 23, when the transmission ball 19 slides along the inner walls of the first track groove 21 and the second track groove 22, it will intermittently abut against the surface of the abutting blocks 23, which will cause the transmission ball 19 to move away from the abutting blocks 23. At this time, the transmission ball 19 moves synchronously with the first guide rod 18 and the second moving frame 25 away from the abutting blocks 23, so that the second moving frame 25 moves reciprocally in the forward and backward direction with the first cleaning brushes 27, and this reciprocating movement in the forward and backward direction is synchronized with the action of scraping the cable 13. At this time, when the first cleaning brushes 27 scrape the surface of the cable 13, they will intermittently switch to perform pressing and scraping operations in the forward and backward and left and right directions, further increasing the uniformity of the scraping of the surface of the cable 13.

[0037] Embodiment Two: This embodiment is an improvement based on Embodiment One. For details, please refer to Figure 1 - Figure 9 .

[0038] In this embodiment: when the ring main unit body 1 is in operation, after the heat dissipation fan 11 is started, due to the first cleaning brush 27 in the first moving frame 16 moving process in embodiment one, the cable 13 outer wall is intermittently brushed and pressed in different directions, so that the pressed position of the cable 13 is deformed to a certain extent, the airflow blown by the heat dissipation fan 11 is blocked by the cable 13, resulting in lower heat dissipation effect of the cable 13 at the rear, and when the cable 13 is pressed and deformed in one direction, the airflow can pass through the cable 13 and blow to the inner wall of the junction box 7 behind the cable 13, and then when the cable 13 is pressed and deformed in another direction, the airflow originally blown to the inner wall of the junction box 7 rebounds and blows to the innermost cable 13 after reset, improving the heat dissipation effect of the cable 13.

[0039] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0040] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety ring main unit, characterized in that, The device includes a ring main unit (1) and a junction box (7) fixedly installed on the ring main unit (1). Multiple terminals (32) are fixedly installed on the inner wall of the junction box (7). Cables (13) are fixedly connected to the inner wall of the terminals (32). An electric telescopic rod (15) is fixedly installed on the inner wall of the junction box (7). A first movable frame (16) is fixedly connected to the output end of the electric telescopic rod (15). A first guide rod (18) and a second guide rod (20) are slidably installed on the inner wall of the first movable frame (16). A second movable frame (25) is fixedly connected to one end of the first guide rod (18) and the second guide rod (20). Multiple through holes (26) are opened on the second movable frame (25). A first cleaning brush (27) for cleaning the cable (13) is fixedly connected to the inner wall of the through hole (26). A third movable frame (28) is sleeved on the outer wall of the cable (13). Multiple second cleaning brushes (29) are fixedly installed on the third movable frame (28).

2. A safety ring main unit according to claim 1, characterized in that: Two second reset springs (30) are sleeved on the cable (13). One end of the second reset spring (30) is fixedly connected to the outer wall of the third moving frame (28), and the other end of the second reset spring (30) is fixedly connected to the inner wall of the junction box (7).

3. A safety ring main unit according to claim 1, characterized in that: The outer wall of the third moving frame (28) is provided with a second abutting slope (31), and the outer wall of the first moving frame (16) is provided with a first abutting slope (17). Both the second abutting slope (31) and the first abutting slope (17) are set as inclined surfaces, and the outer contours of the second abutting slope (31) and the first abutting slope (17) match each other.

4. A safety ring main unit according to claim 1, characterized in that: A first reset spring (24) is sleeved on the first guide rod (18) and the second guide rod (20). One end of the first reset spring (24) is fixedly connected to the inner wall of the first moving frame (16), and the other end of the first reset spring (24) is fixedly connected to the outer wall of the second moving frame (25).

5. A safety ring main unit according to claim 1, characterized in that: One end of the first guide rod (18) is rotatably mounted with a transmission ball (19). The inner wall of the junction box (7) is provided with a first track groove (21). The inner wall of the junction box (7) is also provided with a second track groove (22). The second track groove (22) is set as a groove with a wave track. The first track groove (21) and the second track groove (22) are connected to each other.

6. A safety ring main unit according to claim 5, characterized in that: The inner walls of the first track groove (21) and the second track groove (22) are fixedly connected with a plurality of evenly distributed abutment blocks (23), and the abutment blocks (23) are configured as hemispherical shapes.

7. A safety ring main unit according to claim 1, characterized in that: The junction box (7) has two air inlets (14), and a cooling fan (11) is fixedly installed on the inner wall of the air inlet (14). A dustproof net (12) is fixedly installed at the air outlet of the cooling fan (11). The junction box (7) has a wiring groove (9) for passing through the cable (13).

8. A safety ring main unit according to claim 1, characterized in that: A reinforcing plate (10) is fixedly connected to the outer wall of the main body (1) of the ring network cabinet, and a junction box (5) is fixedly installed on the outer wall of the main body (1) of the ring network cabinet. The junction box (7) is fixedly installed on the outer wall of the junction box (5).

9. A safety ring main unit according to claim 1, characterized in that: The outer wall of the main body (1) of the ring main unit is fixedly installed with an isolating switch (3) and an energy storage switch (8).

10. A safety ring main unit according to claim 8, characterized in that: The control panel (2) is fixedly installed on the outer wall of the junction box (5), and the grounding switch (4) and emergency stop button (6) are fixedly installed on the outer wall of the junction box (5).

Images