A full insulation and full sealing type common box type ring network box equipment

Abstract

The application discloses a full-insulation full-sealing type common-box type complete ring net box equipment, and relates to the field of power distribution engineering.The equipment comprises a protection box and a common-box type gas-filled cabinet.A pressure relief pipe is connected to the rear side outer wall of the gas tank of the common-box type gas-filled cabinet, away from the operation and maintenance surface.A mechanical pressure relief valve is installed on the pressure relief pipe.A back-shaped protection cover is installed in the interlayer cavity between the protection box and the common-box type gas-filled cabinet.A plurality of exhaust ports are formed in the rear side wall of the protection box at the back-shaped protection cover.A plurality of baffle plates are arranged at the plurality of exhaust ports.An adjusting assembly is arranged above the valve rod of the mechanical pressure relief valve in the back-shaped protection cover.The adjusting assembly is used for driving the baffle plates to move upward and expose the exhaust ports when the valve rod of the mechanical pressure relief valve is pushed upward.The application realizes the rapid directional discharge of fault gas, solves the core problem that high-pressure gas accumulates in the interlayer and causes the deformation and explosion of the protection box in the existing structure, and guarantees the structural safety of the complete ring net box equipment in case of failure.

Description

Technical Field

[0001] This invention mainly relates to the technical field of power distribution engineering, specifically a fully insulated and fully sealed co-enclosure type complete ring network box equipment. Background Technology

[0002] With the rapid development of power distribution network construction, fully insulated and fully sealed common-enclosure gas-insulated switchgear has become the mainstream equipment choice for outdoor ring network power supply due to its advantages such as small size, excellent insulation performance and long maintenance-free period. This type of equipment is usually composed of an internal fully insulated and fully sealed common-enclosure gas-insulated switchgear and an external protective box to form a complete ring network box equipment.

[0003] This type of complete ring main unit has been widely used in outdoor power distribution networks. The internal common-enclosure gas-insulated switchgear is usually equipped with a mechanical pressure relief valve or explosion-proof membrane as a fault protection device. In case of a fault, it releases high-pressure gas to prevent the cabinet from exploding. The external protective box is mostly made of fiberglass or stainless steel. The two are connected by rigid bolts to form a closed sandwich cavity, which provides protection for the internal equipment and reserves an operation and maintenance interface.

[0004] However, the existing structure still has obvious defects: when the internal gas cabinet has a short circuit fault and the internal pressure increases suddenly, triggering the pressure relief device to release pressure, the discharged high temperature and high pressure gas will directly rush into the closed interlayer between the gas cabinet and the external protective box. The interlayer space is limited and is a relatively closed structure, which cannot quickly discharge the high pressure gas flow, which can easily cause the external protective box to deform and crack due to pressure accumulation. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a fully insulated and fully sealed co-enclosure type complete ring network box equipment to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A fully insulated and fully sealed co-enclosure type ring main unit includes a protective enclosure and an internal co-enclosure type gas cabinet. The rear outer wall of the gas cabinet away from the maintenance surface is connected to a pressure relief pipe. A mechanical pressure relief valve is installed on the pressure relief pipe. A U-shaped protective cover is installed in the interlayer cavity between the protective enclosure and the co-enclosure type gas cabinet. The U-shaped protective cover is located outside the pressure relief pipe. Multiple exhaust ports are opened on the rear wall of the protective enclosure at the U-shaped protective cover. Each of the exhaust ports is equipped with a baffle plate. An adjustment component is installed above the valve stem of the mechanical pressure relief valve in the U-shaped protective cover. The valve stem of the mechanical pressure relief valve is set vertically upward and is driven to cooperate with the adjustment component. The adjustment component is used to drive the baffle plate to move up and expose the exhaust port when the valve stem of the mechanical pressure relief valve is pushed upward. The protective box has two protective doors on the front side, and locking components are symmetrically arranged on the inner top of the protective box. The two locking components are signal connected to the adjustment component and are used to forcibly lock the protective doors after the adjustment component is triggered by the mechanical pressure relief valve.

[0007] Specifically, the adjusting assembly includes a horizontal plate, both ends of which are fixed to the inner wall of the U-shaped protective cover with screws. Support plates are symmetrically fixed to the lower surface of the horizontal plate. A horizontal plate is hinged between the two support plates via a shaft. The lower surface of one end of the horizontal plate abuts against the top of the valve stem of the mechanical pressure relief valve. Pull ropes are symmetrically fixed to the upper surface of the other end of the horizontal plate. Two sets of guide wheels are symmetrically fixed to the inner top of the U-shaped protective cover. The two pull ropes are respectively wound around the outside of the corresponding guide wheels and extend vertically downward to be connected to the shield plate.

[0008] Specifically, the protective box has vertically arranged adjustment holes on both the upper and lower sides of the exhaust port on the rear side wall. An adjustment plate slides through each of the four adjustment holes. The two sides of the multiple shields are fixedly connected by connecting blocks. One end of each of the four adjustment plates is fixedly connected to the corresponding shield. The other end of each of the four adjustment plates is fixed with a fixing block between the upper and lower sides. The outer side walls of the two fixing blocks are fixed with side plates. The ends of the two pull ropes are respectively fixedly connected to the upper surface of the corresponding side plates.

[0009] Specifically, in this technical solution, the outer walls of the multiple baffles away from the exhaust port are all fixed with inclined plates that tilt downwards at 45°. The inclined plates are used to guide the faulty gas discharged through the exhaust port at an angle.

[0010] Specifically, in this technical solution, a parallel abutment plate is provided below the side of the horizontal plate away from the mechanical pressure relief valve. One end of the abutment plate is fixedly connected to the inner wall of the protective box. A pressure sensor that is electrically connected to the control end of the locking assembly is embedded in the abutment plate.

[0011] Specifically, in this technical solution, each locking assembly includes an electric telescopic cylinder. The cylinder body of the electric telescopic cylinder is fixed to the inner top wall of the protective box with screws. A push plate is fixedly connected to the telescopic end of the electric telescopic cylinder. A limiting groove is provided on the inner top wall of the protective box. A slider is fixed on the top of the push plate. The slider is slidably disposed in the limiting groove. A horizontal guide rod is fixed in the limiting groove. The slider is slidably sleeved on the outer wall of the guide rod.

[0012] Specifically, in this technical solution, a locking rod is fixed to the outer wall of the push plate near the protective door, and a locking block is fixed to the top of the protective door at the position corresponding to the locking rod. The locking block has a through hole for the locking rod to pass through.

[0013] Specifically, in this technical solution, the opposite ends of the two locking rods are respectively fixed with insert rods and have insertion holes. After the two locking rods move synchronously towards each other, the insert rods and insertion holes are engaged.

[0014] Specifically, the U-shaped protective cover is a square cover structure that is closed on all four sides and connected to the exhaust port on the rear side. The U-shaped protective cover is used to enclose an independent pressure relief chamber in the interlayer cavity between the protective box and the common-box gas cabinet, so as to restrict the fault gas to be discharged only through the exhaust port.

[0015] Specifically, in this technical solution, the bottom of the common-box gas cabinet is fixedly connected to the inner bottom wall of the protective box through a rubber support, and the rubber support is an elastic shock-absorbing support.

[0016] In summary, the present invention has the following advantages: by setting a U-shaped protective cover on the outside of the pressure relief pipe, an independent pressure relief chamber is formed within the interlayer cavity, which restricts the flow of fault gas only within the independent chamber. At the same time, the mechanical pressure relief valve stem triggers the adjustment component to drive the baffle plate to move up and expose the exhaust port, thereby realizing the rapid and directional discharge of fault gas. This solves the core problem of high-pressure gas accumulation in the interlayer in the existing structure, which leads to deformation and cracking of the protective box, and ensures the structural safety of the complete ring network box equipment in case of failure. Furthermore, the U-shaped protective cover can also isolate moisture, salt spray and dust in the interlayer during normal operation of the equipment, effectively protecting core transmission components such as mechanical pressure relief valves and regulating components, preventing components from rusting and jamming, improving the operational reliability and service life of the transmission mechanism, and reducing the equipment operation and maintenance costs in harsh outdoor environments. The depressurization action will also trigger the protective door to lock in a timely manner, preventing maintenance personnel from accidentally opening the protective door and coming into contact with the common gas cabinet that is in a faulty state (such as the presence of residual high voltage, arc residue, etc.) without their knowledge, thus eliminating safety hazards such as electric shock and burns; at the same time, the inclined plate on the shield can guide the exhaust gas at a 45° angle, preventing the gas from directly hitting pedestrians or splashing debris on the ground. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the ring network box of the present invention; Figure 2 This is a schematic diagram of the rear external structure of the ring network box of the present invention; Figure 3 This is a schematic diagram of the exhaust port and adjustment hole of the present invention; Figure 4 This is a schematic diagram of a partial installation structure of the mechanical pressure relief valve and regulating assembly of the present invention; Figure 5 This is a schematic diagram of the shielding plate structure of the present invention; Figure 6This is a schematic diagram of the assembly structure of the adjustment component and the baffle plate of the present invention; Figure 7 This is a top view of the adjustment component of the present invention; Figure 8 This is a partial schematic diagram of the installation position of the locking component of the present invention; Figure 9 This is a three-dimensional structural diagram of the locking component of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1. Protective box; 101. Protective door; 1011. Locking block; 1012. Perforation; 102. Exhaust port; 103. Adjustment hole; 104. Restriction groove; 105. Abutment plate; 2. Common-box gas holder; 201. Pressure relief pipe; 202. Mechanical pressure relief valve; 3. Rubber support; 4. U-shaped protective cover; 5. Baffle plate; 501. Inclined plate; 502. Connecting block; 50 3. Adjusting plate; 5031. Fixing block; 504. Side plate; 6. Adjusting assembly; 601. Horizontal plate; 602. Support plate; 603. Horizontal plate; 6031. Shaft; 604. Pull rope; 605. Guide wheel; 7. Locking assembly; 701. Electric telescopic cylinder; 702. Push plate; 7021. Slider; 7022. Guide rod; 703. Locking rod; 7031. Insert rod; 7032. Insertion hole. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The embodiments of the present invention will now be described.

[0021] In this embodiment, please refer to Figure 1 - Figure 7 As shown, a fully insulated and fully sealed co-enclosure type ring network equipment includes a protective box 1 and an internal co-enclosure type air-filling cabinet 2. The co-enclosure type air-filling cabinet 2 has a fully insulated and fully sealed structure. The front side of the protective box 1 is provided with two protective doors 101 for daily operation and maintenance of the equipment. The bottom of the co-enclosure type air-filling cabinet 2 is fixedly connected to the inner bottom wall of the protective box 1 through rubber supports 3. The rubber supports 3 are elastic shock-absorbing supports, which can buffer the displacement caused by outdoor vibration, equipment transportation bumps and failure pressure relief impact, avoid rigidly pulling the sealing structure of the co-enclosure type air-filling cabinet 2, and ensure the sealing integrity of the air box. The gas chamber of the common-box gas holder 2 is connected to a pressure relief pipe 201 on the rear outer wall away from the maintenance surface. A mechanical pressure relief valve 202 is installed on the pressure relief pipe 201. The valve stem of the mechanical pressure relief valve 202 is arranged vertically upwards, and the opening pressure is set to 0.3MPa, which matches the rated pressure (0.15-0.25MPa) of the gas chamber of the common-box gas holder 2 to prevent accidental opening. A U-shaped protective cover 4 is installed in the interlayer cavity between the protective box 1 and the common-box gas holder 2. The U-shaped protective cover 4 is located outside the pressure relief pipe 201. Multiple exhaust ports 102 are opened on the rear wall of the protective box 1 at the U-shaped protective cover 4. Each exhaust port 102 is equipped with a shield 5. Under normal conditions, the shield 5 completely seals the exhaust port 102, ensuring the dustproof and rainproof protection level of the protective box 1. Multiple baffles 5 are fixed with inclined plates 501 that tilt downwards at 45° on the outer wall away from the exhaust port 102. The inclined plates 501 are used to guide the fault gas discharged through the exhaust port 102 at an angle. The U-shaped protective cover 4 is a square cover structure that is closed on all sides and connected to the exhaust port 102 on the rear side. The U-shaped protective cover 4 is used to enclose an independent pressure relief chamber in the interlayer cavity of the protective box 1 and the common box type gas filling cabinet 2, and to constrain the fault gas to be discharged only through the exhaust port 102. An adjustment component 6 is set above the valve stem of the mechanical pressure relief valve 202 in the U-shaped protective cover 4. The valve stem of the mechanical pressure relief valve 202 is set vertically upward and is driven to cooperate with the adjustment component 6. The adjustment component 6 is used to drive the baffles 5 to move upward to expose the exhaust port 102 when the valve stem of the mechanical pressure relief valve 202 is pushed upward. The adjusting assembly 6 includes a horizontal plate 601. Both ends of the horizontal plate 601 are fixed to the inner wall of the U-shaped protective cover 4 with screws. Support plates 602 are symmetrically fixed to the lower surface of the horizontal plate 601. A horizontal plate 603 is hinged between the two support plates 602 via a shaft 6031. The horizontal plate 603 can swing up and down at a small angle around the shaft 6031. The lower surface of one end of the horizontal plate 603 abuts against the top of the valve stem of the mechanical pressure relief valve 202, with slight contact under normal conditions. A pull rope 604 is symmetrically fixed to the upper surface of the other end. Two sets of guide wheels 605 are symmetrically fixed to the inner top of the U-shaped protective cover 4. The two pull ropes 604 are respectively wound around the outer side of the corresponding guide wheel 605 and extend vertically downward to be connected to the baffle plate 5. Vertical adjustment holes 103 are opened on the upper and lower sides of the rear side wall of the protective box 1 corresponding to the exhaust port 102. Adjustment plates 503 are slidably inserted into each of the four adjustment holes 103. The two sides of the multiple baffle plates 5 are fixed together by connecting blocks 502. The four adjusting plates 503 are fixedly connected to the corresponding blocking plates 5 at one end. The other ends of the four adjusting plates 503 (on the same side) are fixed with fixing blocks 5031. Side plates 504 are fixed to the outer walls of the two fixing blocks 5031. The ends of the two pull ropes 604 are fixedly connected to the upper surfaces of the corresponding side plates 504. A parallel abutment plate 105 is located below the side of the horizontal plate 603 away from the mechanical pressure relief valve 202. One end of the abutment plate 105 is fixedly connected to the inner wall of the protective box 1. A pressure sensor (not shown in the figure) is embedded in the abutment plate 105 and electrically connected to the control terminal (built-in battery-powered control module) of the locking assembly 7. The pressure sensor is a waterproof and explosion-proof piezoelectric sensor, and its probe is flush with the upper surface of the abutment plate 105. The control module (not shown in the figure) is electrically connected to the electric telescopic cylinder 701 of the locking assembly 7. The control module has a built-in 12V... The lithium battery pack is installed in a waterproof sealed box on the top wall of the protective box 1. The lithium battery is connected to the electric telescopic cylinder 701 and the pressure sensor through an aging-resistant waterproof wiring harness.

[0022] Under normal operating conditions, the internal air pressure of the common-box gas cabinet 2 is stable, the valve stem of the mechanical pressure relief valve 202 remains retracted, the horizontal plate 603 is in a horizontal equilibrium position, the pull rope 604 is slack, and the baffle plate 5 blocks the exhaust port 102 under its own weight, and the protective box 1 remains in a complete and sealed protective state; at this time, the pressure sensor has no trigger signal, the electric telescopic cylinder 701 is in the extended state, the locking rod 703 is away from the protective door 101, and the protective door 101 can be opened and closed normally, meeting the needs of daily operation and maintenance. When a short circuit occurs inside the common-box gas holder 2, the pressure inside the gas box rises sharply. The high-pressure gas triggers the mechanical pressure relief valve 202 to open via the pressure relief pipe 201. The valve stem of the mechanical pressure relief valve 202 pushes vertically upward, pushing one end of the horizontal plate 603 upward. The horizontal plate 603 rotates around the shaft 6031, and the end away from the mechanical pressure relief valve 202 swings downward, pulling down the two pull ropes 604. After being guided by the guide wheel 605, the pull ropes 604 pull vertically upward, causing the side plate 504 to move. The side plate 504 drives the adjusting plate 503 along the adjusting hole via the fixing block 5031. 103 moves upward, and the adjusting plate 503 drives the baffle plate 5 to move upward. Through the connecting block 502, multiple baffle plates 5 move synchronously, and the exhaust port 102, which was originally blocked by the baffle plate 5, is completely exposed. At this time, the high-pressure fault gas sprayed from the pressure relief pipe 201 is constrained in the independent pressure relief chamber formed by the spiral protective cover 4, and is directly discharged through multiple exhaust ports 102 along the pressure relief chamber. At the same time, it is discharged obliquely under the 45° oblique flow guiding action of the inclined plate 501, so that pressure will not accumulate in the interlayer between the protective box 1 and the common box type gas cabinet 2, and the protective box 1 will be prevented from deforming and cracking due to excessive pressure. This restricts the flow of faulty gas to an independent cavity. At the same time, the mechanical pressure relief valve 202 triggers the adjustment component 6, driving the baffle plate 5 to move upward to expose the exhaust port 102, thus enabling the rapid and directional discharge of faulty gas. This solves the core problem of high-pressure gas accumulation in the interlayer in the existing structure, which leads to deformation and cracking of the protective box 1, and ensures the structural safety of the complete ring network box equipment in case of failure.

[0023] Please see Figure 1 , Figure 8 and Figure 9As shown, locking components 7 are symmetrically arranged on the inner side of the top of the protective box 1. Two locking components 7 are signal-connected to the adjusting component 6, used to forcibly lock the protective door 101 after the adjusting component 6 is triggered by the mechanical pressure relief valve 202. Each locking component 7 includes an electric telescopic cylinder 701. The cylinder body of the electric telescopic cylinder 701 is fixed to the inner top wall of the protective box 1 with screws. A push plate 702 is fixedly connected to the telescopic end of the electric telescopic cylinder 701. A limiting groove 104 is provided on the inner top wall of the protective box 1. A slider 7021 is fixed to the top of the push plate 702. The slider 7021 slides within the limiting groove 104. A horizontal guide rod 7022 is fixed within the limiting groove 104. 7021 is slidably sleeved on the outer wall of guide rod 7022 to ensure the smooth horizontal displacement of push plate 702 and improve the overall rigidity of the locking structure. A locking rod 703 is fixed on the outer wall of push plate 702 near the protective door 101. A locking block 1011 is fixed on the top of the protective door 101 at the position corresponding to the locking rod 703. A through hole 1012 is opened on the locking block 1011 for the locking rod 703 to pass through. The opposite ends of the two locking rods 703 are respectively fixed with insert rods 7031 and have insertion holes 7032. After the two locking rods 703 move synchronously towards each other, the insert rods 7031 and insertion holes 7032 are inserted and engaged to realize the bidirectional forced locking of the two protective doors 101.

[0024] After one end of the horizontal plate 603 swings downward (i.e., the push-out stroke of the mechanical pressure relief valve 202 stem and the stroke of the adjusting plate 503 in the adjusting hole 103), it will eventually press against the pressure sensor of the lower abutment plate 105. After the pressure sensor is triggered, it sends a trigger signal to the control module. The control module then drives the two locking components 7 to move synchronously. The telescopic ends of the two electric telescopic cylinders 701 retract synchronously, driving the push plate 702 and the slider 7021 to move towards the two protective doors 101 along the limiting slide groove 104 on the guide rod 7022. The locking rods 703 are inserted into the through holes 1012 of the corresponding locking blocks 1011 at the same time. 3. The insertion rods 7031 at opposite ends are inserted into the corresponding insertion holes 7032 to form an interlocking structure. At this time, the two protective doors 101 are completely locked, thus preventing maintenance personnel from accidentally opening the protective doors 101 and contacting the common-box gas cabinet 2 which is in a faulty state (such as residual high pressure, electric arc residue, etc.). After the fault ends, the internal pressure of the common-box gas cabinet 2 drops, the valve stem of the mechanical pressure relief valve 202 falls back, the horizontal plate 603 resets, the baffle plate 5 moves down under its own weight to re-seal the exhaust port 102, the pressure sensor signal disappears, the electric telescopic cylinder 701 resets, the protective door 101 is unlocked, and the equipment can be used for fault diagnosis and maintenance.

[0025] The working principle of this invention is as follows: When a short circuit occurs inside the common-box gas holder 2, the pressure inside the gas box rises sharply. High-pressure gas triggers the mechanical pressure relief valve 202 to open via the pressure relief pipe 201. The valve stem of the mechanical pressure relief valve 202 extends vertically upwards, pushing one end of the horizontal plate 603 upwards. The horizontal plate 603 rotates around the shaft 6031, and its end away from the mechanical pressure relief valve 202 swings downwards, pulling down the two pull ropes 604. Guided by the guide wheel 605, the pull ropes 604 pull vertically upwards, causing the side plate 504 to... 4. The adjusting plate 503 is driven to move upward along the adjusting hole 103 by the fixing block 5031. The adjusting plate 503 drives the baffle plate 5 to move upward. The connecting block 502 makes multiple baffle plates 5 move synchronously. The exhaust port 102, which was originally blocked by the baffle plate 5, is completely exposed. At this time, the high-pressure fault gas sprayed from the pressure relief pipe 201 is constrained in the independent pressure relief chamber formed by the spiral protective cover 4. It is directly discharged through multiple exhaust ports 102 along the pressure relief chamber. At the same time, it is discharged obliquely under the 45° oblique flow guiding action of the inclined plate 501. After one end of the horizontal plate 603 swings downward, it will eventually press against the pressure sensor of the lower abutment plate 105. After the pressure sensor is triggered, it sends a trigger signal to the control module. The control module then drives the two locking components 7 to move synchronously. The telescopic ends of the two electric telescopic cylinders 701 retract synchronously, driving the push plate 702 and the slider 7021 to move towards the two protective doors 101 along the limiting groove 104 on the guide rod 7022. The locking rod 703 is inserted into the through hole 1012 of the corresponding locking block 1011. At the same time, the insert rods 7031 at the opposite ends of the two locking rods 703 are inserted into the corresponding insert holes 7032 to form an interlocking structure. At this time, the two protective doors 101 are completely locked.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment, comprising a protective enclosure (1) and an internal co-enclosure type gas-filled cabinet (2), characterized in that, The gas tank of the common-box gas cabinet (2) has a pressure relief pipe (201) connected to the rear outer wall of the gas tank away from the operation and maintenance surface. A mechanical pressure relief valve (202) is installed on the pressure relief pipe (201). A U-shaped protective cover (4) is installed in the interlayer cavity between the protective box (1) and the common-box gas cabinet (2). The U-shaped protective cover (4) is located outside the pressure relief pipe (201). Multiple exhaust vents are provided on the rear side wall of the protective box (1) at the location of the U-shaped protective cover (4). Each of the multiple exhaust ports (102) is provided with a baffle plate (5). An adjustment component (6) is provided above the valve stem of the mechanical pressure relief valve (202) in the spiral protective cover (4). The valve stem of the mechanical pressure relief valve (202) is set vertically upward and is driven to cooperate with the adjustment component (6). The adjustment component (6) is used to drive the baffle plate (5) to move upward to expose the exhaust port (102) when the valve stem of the mechanical pressure relief valve (202) is pushed upward. The protective box (1) has two protective doors (101) on the front side. The protective box (1) has symmetrical locking components (7) on the inner top side. The two locking components (7) are connected to the regulating component (6) by signal and are used to forcibly lock the protective doors (101) after the regulating component (6) is triggered by the mechanical pressure relief valve (202).

2. The fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 1, characterized in that, The adjustment assembly (6) includes a horizontal plate (601), the two ends of which are fixed to the inner sidewall of the U-shaped protective cover (4) with screws. Support plates (602) are symmetrically fixed on the lower surface of the horizontal plate (601). A horizontal plate (603) is hinged between the two support plates (602) through a shaft (6031). The lower surface of one end of the horizontal plate (603) abuts against the top of the valve stem of the mechanical pressure relief valve (202). Pull ropes (604) are symmetrically fixed on the upper surface of the other end of the horizontal plate (603). Two sets of guide wheels (605) are symmetrically fixed on the inner top of the U-shaped protective cover (4). The two pull ropes (604) are respectively wound around the outside of the corresponding guide wheels (605) and extend vertically downward to be connected to the shield plate (5) for transmission.

3. The fully insulated and fully sealed co-enclosure type complete ring network box equipment according to claim 2, characterized in that, The protective box (1) has vertically arranged adjustment holes (103) on both the upper and lower sides of the exhaust port (102) on the rear side wall. Adjustment plates (503) are slidably inserted through the four adjustment holes (103). The two sides of the multiple shields (5) are fixedly connected by connecting blocks (502). One end of each of the four adjustment plates (503) is fixedly connected to the corresponding shield (5). The other ends of the four adjustment plates (503) are fixed with fixing blocks (5031) between the upper and lower sides. The outer walls of the two fixing blocks (5031) are fixed with side plates (504). The ends of the two pull ropes (604) are fixedly connected to the upper surface of the corresponding side plates (504).

4. The fully insulated and fully sealed common-enclosure complete ring network box equipment according to claim 3, characterized in that, Each of the multiple baffles (5) has a downwardly inclined plate (501) fixed on its outer wall away from the exhaust port (102). The inclined plate (501) is used to guide the fault gas discharged through the exhaust port (102) at an angle.

5. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 2, characterized in that, A parallel abutment plate (105) is provided below the side of the horizontal plate (603) away from the mechanical pressure relief valve (202). One end of the abutment plate (105) is fixedly connected to the inner wall of the protective box (1). A pressure sensor that is electrically connected to the control end of the locking assembly (7) is embedded in the abutment plate (105).

6. The fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 1, characterized in that, Each locking assembly (7) includes an electric telescopic cylinder (701). The cylinder body of the electric telescopic cylinder (701) is fixed to the inner top wall of the protective box (1) with screws. The telescopic end of the electric telescopic cylinder (701) is fixedly connected to a push plate (702). The inner top wall of the protective box (1) is provided with a limiting groove (104). The top of the push plate (702) is fixed with a slider (7021). The slider (7021) is slidably disposed in the limiting groove (104). A horizontal guide rod (7022) is fixed in the limiting groove (104). The slider (7021) is slidably sleeved on the outer wall of the guide rod (7022).

7. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 6, characterized in that, A locking rod (703) is fixed on the outer wall of the push plate (702) near the protective door (101). A locking block (1011) is fixed on the top of the protective door (101) at the position corresponding to the locking rod (703). A through hole (1012) is provided on the locking block (1011) for the locking rod (703) to pass through.

8. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 7, characterized in that, The two locking rods (703) are respectively fixed with insert rods (7031) and have insertion holes (7032) at their opposite ends. After the two locking rods (703) move synchronously towards each other, the insert rods (7031) and insertion holes (7032) are inserted into each other.

9. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 1, characterized in that, The spiral protective cover (4) is a square cover structure that is closed on all four sides and connected to the exhaust port (102) on the rear side. The spiral protective cover (4) is used to enclose an independent pressure relief chamber in the interlayer cavity between the protective box (1) and the common box type gas cabinet (2), and to restrict the fault gas to be discharged only through the exhaust port (102).

10. A fully insulated and fully sealed co-enclosure type complete ring main unit equipment according to claim 1, characterized in that, The bottom of the common-box gas cabinet (2) is fixedly connected to the inner bottom wall of the protective box (1) through a rubber support (3), and the rubber support (3) is an elastic shock-absorbing support.

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