A primary and secondary fusion complete ring network box with emergency isolation structure

Abstract

The application relates to the technical field of ring network boxes, in particular to a primary and secondary fusion complete ring network box with an emergency isolation structure, which comprises an isolation mechanism and a protection mechanism, the protection mechanism is arranged at the right side of the isolation mechanism, the isolation mechanism comprises a limiting assembly, a closing assembly, an exhaust assembly and a supply assembly, the closing assembly is arranged at the right side of the limiting assembly, the exhaust assembly is arranged at the front side of the limiting assembly, and the supply assembly is arranged at the top of the limiting assembly; the protection mechanism comprises a limiting component, a locking component, a discharge component, a drainage component and a blocking component, the limiting component is arranged at the right side of the closing assembly, and the locking component is arranged on the two sides of the inner side of the limiting component. The primary and secondary fusion complete ring network box with the emergency isolation structure has the structure of emergency isolation of a fault position, so that the region can be emergently isolated when local faults occur in the ring network cabinet, and the flexibility of fault treatment of the ring network box is improved.

Description

Technical Field

[0001] This invention relates to the field of ring network box technology, specifically to a primary and secondary integrated ring network box with an emergency isolation structure. Background Technology

[0002] As is well known, with the rapid development of smart distribution networks, integrated ring network boxes that combine primary and secondary power distribution have become key equipment in distribution networks. They deeply integrate primary high-voltage power distribution with secondary control and protection units and are suitable for urban power grids, industrial and large building power distribution scenarios. To meet the requirements of rapid fault handling, convenient operation and maintenance and high power supply reliability, emergency isolation structures have gradually become standard equipment, supporting the automation and safe and stable operation of distribution networks.

[0003] A search revealed a Chinese patent for a primary and secondary fusion ring main unit, application publication number CN120674942B. This patent includes a housing and a door, the door being rotatably connected to the housing. The housing has multiple support bars, each with a support rod rotatably connected to it. A rotating wheel is fixedly connected to each support rod. The housing has a fixing structure for securing the housing. This application utilizes the rotating wheel fixedly connected to the support rod, allowing the wheel to rotate the housing, enabling workers to disassemble the housing from the cabinet for maintenance. Simultaneously, the fixing structure secures the housing, preventing slippage within the cabinet and reducing shaking caused by ground vibrations.

[0004] When dealing with ring main units (RMUs) malfunctions, it is necessary to troubleshoot the fault location. The problem with existing technologies is that, due to the lack of an emergency isolation structure for the fault location, it is impossible to isolate the area when a partial fault occurs in the RMU, which reduces the flexibility of handling RMU malfunctions. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a primary and secondary integrated ring main unit with an emergency isolation structure. This structure provides emergency isolation for fault locations, thus enabling emergency isolation of the affected area when a local fault occurs in the ring main unit, thereby improving the flexibility of handling ring main unit faults.

[0007] (II) Technical Solution

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a primary and secondary integrated ring mesh cage with an emergency isolation structure, comprising an isolation mechanism and a protective mechanism, wherein the protective mechanism is located on the right side of the isolation mechanism, the isolation mechanism comprising a limiting component, a closing component, an exhaust component, and a supply component, wherein the closing component is located on the right side of the limiting component, the exhaust component is located in front of the limiting component, and the supply component is located on top of the limiting component, the protective mechanism comprising a limiting component, a locking component, a discharge component, a diversion component, and a blocking component, wherein the limiting component is located on the right side of the closing component, the locking component is located on both sides inside the limiting component, the discharge component is located in front of the limiting component, the diversion component is located inside the locking component, and the blocking component is located inside the diversion component.

[0009] By adopting the above technical solution, an isolation mechanism and a protection mechanism are set up. The isolation mechanism is a structure that provides an independent isolation environment for the secondary intelligent equipment, and can be used to isolate the secondary intelligent equipment in case of emergency isolation when it fails. The protection mechanism is a structure that provides an independent isolation environment for the primary switching equipment, and can be used to isolate the primary switching equipment in case of emergency isolation when it fails.

[0010] The present invention is further configured such that: the limiting component includes a sandwich shell, a limiting liner and a one-way valve, the limiting liner is bolted to the inner side of the sandwich shell, the one-way valve is connected to the top of the limiting liner, and the input end of the one-way valve penetrates through the top of the sandwich shell.

[0011] By adopting the above technical solution, the limiting structure composed of the sandwich shell, the limiting liner, and the one-way valve can limit the secondary intelligent device through its own support structure and provide an inert gas protection space. In the event of a malfunction, inert gas can be sent to the secondary intelligent device to isolate it from the air and prevent accidents such as combustion. The support structure formed by the sandwich shell can limit the limiting liner, allowing it to be removed from the sandwich shell. The limiting liner can limit the secondary intelligent device inside, keeping it within the sandwich shell. The one-way valve can then deliver the inert gas temporarily stored in the sandwich shell to the secondary intelligent device, thereby isolating it from the outside air.

[0012] The present invention is further configured such that: the sealing component includes a sealing airbag, a wire hole and a filling valve, the sealing airbag is bolted to the right side of the sandwich shell, the wire hole is opened on both sides of the sealing airbag, the filling valve is connected to the top of the sealing airbag, and the filling valve is located on the inner side of the sandwich shell.

[0013] By adopting the above technical solution, and by setting up a sealing component, the sealing structure consisting of the sealing airbag, the wire hole, and the filling valve can seal the wire to prevent inert gas from leaking from the gaps when the secondary intelligent device and the primary switchgear need to be isolated in an emergency due to a fault. When the filling valve receives the signal transmitted by the secondary intelligent device and the primary switchgear due to a fault, it can send gas from the interlayer shell into the sealing airbag, causing the sealing airbag to expand due to the gas filling, thereby reducing the inner diameter of the wire hole and sealing the wire by wrapping it with the sealing airbag.

[0014] The present invention is further configured such that: the exhaust assembly includes an air intake square tube, an exhaust fan, an exhaust pipe and an exhaust valve, the air intake square tube is bolted to the front side of the sandwich shell, the exhaust fan is connected to the top of the front side of the air intake square tube, the exhaust pipe is connected to the output end of the exhaust fan, and the exhaust valve is connected to the output end of the exhaust pipe.

[0015] By adopting the above technical solution, and by setting up an exhaust assembly, the inert gas emission structure composed of the air intake square tube, the exhaust fan, the exhaust pipe, and the exhaust valve can discharge excess and seeping inert gas from the sandwich shell when connected to an outdoor delivery pipeline, thus preventing inert gas from polluting the indoor environment. The exhaust fan draws the gas from the air intake square tube to the exhaust pipe, which can create a negative pressure at the input end of the air intake square tube, thereby drawing in the gas overflowing from the sandwich shell. Then, when the exhaust valve is connected to an outdoor delivery pipeline, the gas is discharged to the outside, thus preventing inert gas from polluting the indoor environment.

[0016] The present invention is further configured such that: the supply assembly includes a mounting base, a supply tank, and a supply valve; the mounting base is bolted to the top of the sandwich shell; the supply tank is threaded to the top of the mounting base; the supply valve is connected to the bottom of the supply tank; and the output end of the supply valve is connected to the top of the sandwich shell.

[0017] By adopting the above technical solution, an inert gas delivery structure consisting of a supply component, a mounting base, a supply tank, and a supply valve can be set up to provide inert gas to the sandwich shell for emergency isolation of secondary intelligent equipment. The inert gas is stored in the supply tank, and when the supply tank is installed on the sandwich shell through the mounting base, the inert gas is sent into the sandwich shell by the supply valve to achieve the effect of providing inert gas to the sandwich shell.

[0018] The present invention is further configured such that: the limiting component includes a sandwich box, a limiting seat, a storage tank, and a delivery valve; the sandwich box is bolted to the right side of the sandwich shell; the left side of the sandwich box is bolted to the right side of the sealed airbag; the limiting seat is bolted to the top of the sandwich box; the storage tank is threaded to the inside of the limiting seat; the delivery valve is connected to the bottom of the storage tank; and the output end of the delivery valve is connected to the top of the sandwich box.

[0019] By adopting the above technical solution, the limiting structure consisting of a mezzanine box, a limiting seat, a storage tank, and a delivery valve, through the setting of limiting components, can provide limiting for the primary switchgear and provide an emergency isolation environment for it. The mezzanine box provides limiting for the locking component, which in turn provides limiting for the diversion component, thereby allowing the diversion component to limit the primary switchgear within the mezzanine box. The storage tank can store inert gas and is installed on the top of the mezzanine box through the limiting seat. The delivery valve sends inert gas into the mezzanine box to provide inert gas for emergency isolation of the primary switchgear.

[0020] The invention is further configured such that: the locking assembly includes a locking frame, a guide slider, and a locking rotating plate; the three locking frames are respectively bolted to the inner side, the top of the inner side, and the bottom of the inner side of the mezzanine box; the guide slider is slidably connected to the opposite side of the locking frame; the locking rotating plate is rotatably connected to the front side of the locking frame; and the rear side of the locking rotating plate contacts the front side of the guide slider.

[0021] By adopting the above technical solution, the locking frame, guide slider, and locking rotating plate, which form a fixed structure, can provide a limit for the flow diversion component and facilitate its removal and insertion. The locking frame guides the forward and backward movement of the guide slider. When the guide slider is fully inserted into the locking frame, rotating the locking plate can block the front of the guide slider, achieving a temporary locking effect. When the locking rotating plate rotates and moves the guide slider away, the guide slider can pull the flow diversion component out of the locking frame, facilitating the subsequent replacement and maintenance of the primary switchgear inside the flow diversion component.

[0022] The present invention is further configured such that: the discharge assembly includes a diversion square tube, a supply fan, a discharge pipe and a discharge valve, the diversion square tube is bolted to the front side of the mezzanine box, the supply fan is connected to the top of the front side of the diversion square tube, the discharge pipe is connected to the output end of the supply fan, and the discharge valve is connected to the output end of the discharge pipe.

[0023] By adopting the above technical solution, and by setting up an exhaust assembly, the exhaust structure consisting of a diversion square tube, a supply fan, an exhaust pipe, and an exhaust valve can collect the inert gas overflowing from the emergency isolation primary switchgear in the mezzanine box. When connected to an outdoor delivery pipeline, the overflowing inert gas is discharged to the outside, preventing inert gas from polluting the indoor environment. The supply fan sends air from the diversion square tube to the exhaust pipe, which creates a negative pressure in the diversion square tube, thereby drawing in the overflowing inert gas. When the exhaust valve is connected to an outdoor delivery pipeline, the inert gas can be discharged to the outside.

[0024] The present invention is further configured such that: the drainage assembly includes a drainage inner diaphragm, a limiting airbag and a pressurizing valve, the drainage inner diaphragm is bolted to the top and bottom of the guide slider, the limiting airbag is bolted to the surface of the drainage inner diaphragm, and the pressurizing valve is connected to the inner side of the drainage inner diaphragm.

[0025] By adopting the above technical solution, and by setting up a drainage component, the drainage structure consisting of the drainage inner partition, the limiting airbag, and the pressurizing valve can be used to perform targeted limiting and isolation according to the primary switchgear. The drainage inner partition can independently limit the various structures within the primary switchgear. When the primary switchgear needs to be isolated, the pressurizing valve can be used to send gas from the interlayer box into the corresponding drainage inner partition, which can provide emergency isolation for the primary switchgear within that drainage inner partition. Furthermore, the limiting airbag can always apply centripetal force to the drainage inner partition through its own elasticity, preventing the filling of inert gas from causing the gap to widen and increasing the airtightness during isolation.

[0026] The present invention is further configured such that: the barrier component includes a delivery hole, a one-way diaphragm and a vented bellows, the delivery hole is opened on the inner side of the drainage inner diaphragm, the one-way diaphragm is snapped into the inner side of the delivery hole, and the vented bellows is connected to the output end of the one-way diaphragm.

[0027] By adopting the above technical solution, and by setting up a barrier component, the automatic closed gas supply structure composed of the delivery hole, the one-way diaphragm, and the vented bellows can deliver inert gas into the primary switchgear as the pressure increases, and can also automatically close when the pressure decreases, thus preventing excessive inert gas from flowing into the primary switchgear and causing waste. The inert gas in the inner partition is delivered through the delivery hole to the one-way diaphragm, which can deliver the gas unidirectionally into the vented bellows. Then, through the expansion of the vented bellows, the holes on its surface can be opened, allowing the inert gas to flow into the primary switchgear. When the one-way diaphragm stops delivering inert gas, the vented bellows loses the support of the gas and resets itself with its own elasticity, thereby folding and closing the holes on its surface, achieving the effect of automatically opening and closing with pressure changes.

[0028] (III) Beneficial Effects

[0029] Compared with the prior art, the present invention provides a primary and secondary integrated ring network box with an emergency isolation structure, which has the following beneficial effects:

[0030] This integrated primary and secondary ring mesh enclosure with an emergency isolation structure, through the setting of an isolation mechanism, allows the limiting component, along with the sealing component, exhaust component, and supply component, to form a structure that provides an independent isolation environment for the secondary intelligent equipment. This allows for emergency isolation of the secondary intelligent equipment when it malfunctions and requires emergency isolation. The limiting structure, composed of a sandwich shell, a limiting liner, and a one-way valve, provides a self-supporting structure that limits the movement of the secondary intelligent equipment and provides an inert gas protection space. In the event of a malfunction, inert gas can be introduced into the secondary intelligent equipment to isolate it from the air and prevent... In the event of an accident such as a fire, the sealed structure consisting of the airbag, wire hole, and filling valve can seal the wires to prevent inert gas from leaking out of the gaps when the secondary intelligent equipment and primary switchgear need to be isolated in an emergency due to a fault. The inert gas discharge structure consisting of the air intake square tube, exhaust fan, exhaust pipe, and exhaust valve can discharge excess and seeping inert gas from the sandwich shell when connected to an outdoor delivery pipeline, preventing inert gas from polluting the indoor environment. The inert gas delivery structure consisting of the mounting base, supply tank, and supply valve can provide inert gas to the sandwich shell for emergency isolation of secondary intelligent equipment.

[0031] This integrated primary and secondary ring main unit with an emergency isolation structure, through the installation of protective mechanisms, allows the limiting components, locking components, discharge components, diversion components, and barrier components to form a structure that provides an independent isolation environment for the primary switchgear. This allows for emergency isolation of the primary switchgear when a fault occurs. The limiting structure, composed of a mezzanine box, limiting seat, storage tank, and delivery valve, provides limits on the primary switchgear and provides an emergency isolation environment. The fixing structure, composed of a locking frame, guide slider, and locking turn plate, provides limits on the diversion components and facilitates their removal and insertion. The diversion square tube connects to the delivery... The discharge structure, consisting of a fan, discharge pipe, and discharge valve, can collect the inert gas overflowing from the primary switchgear in the mezzanine box due to emergency isolation. When connected to an outdoor delivery pipeline, the overflowing inert gas is discharged outdoors to prevent inert gas from contaminating the indoor environment. The drainage structure, consisting of an inner partition, a limiting airbag, and a pressurizing valve, can perform targeted limiting and isolation based on the primary switchgear. The automatic closed gas supply structure, consisting of a delivery hole, a one-way diaphragm, and a bellows, can deliver inert gas into the primary switchgear as the pressure increases, and can also automatically close when the pressure decreases, preventing excessive inert gas from flowing into the primary switchgear and causing waste. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2This is a schematic diagram of the isolation mechanism in this invention;

[0034] Figure 3 This is a schematic diagram of the structure of the limiting component and the closing component in this invention;

[0035] Figure 4 This is a schematic diagram of the structure of the exhaust assembly and the supply assembly in this invention;

[0036] Figure 5 This is a schematic diagram of the protective mechanism in this invention;

[0037] Figure 6 This is a schematic diagram of the structure of the components defined in this invention;

[0038] Figure 7 This is a schematic diagram of the structure of the locking component and the discharge component in this invention;

[0039] Figure 8 This is a schematic diagram of the structure of the drainage component and the blocking component in this invention.

[0040] In the diagram: 1. Isolation mechanism; 11. Limiting component; 111. Sandwich shell; 112. Limiting liner; 113. One-way valve; 12. Sealing component; 121. Sealing airbag; 122. Wire hole; 123. Filling valve; 13. Exhaust component; 131. Air duct; 132. Exhaust fan; 133. Exhaust pipe; 134. Exhaust valve; 14. Supply component; 141. Mounting base; 142. Supply tank; 143. Supply valve; 2. Protective mechanism; 21. Limiting component; 211. Sandwich box ; 212, Limiting seat; 213, Storage tank; 214, Delivery valve; 22, Locking assembly; 221, Locking frame; 222, Guide slider; 223, Locking turntable; 23, Discharge assembly; 231, Drainage square tube; 232, Supply fan; 233, Discharge pipe; 234, Discharge valve; 24, Drainage assembly; 241, Drainage inner partition; 242, Limiting airbag; 243, Pressurizing air valve; 25, Barrier assembly; 251, Delivery hole; 252, One-way diaphragm; 253, Pore bellows. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] Please see Figure 1-4A primary and secondary integrated ring mesh cage with an emergency isolation structure includes an isolation mechanism 1. The isolation mechanism 1 includes a limiting component 11, a sealing component 12, an exhaust component 13, and a supply component 14. The sealing component 12 is located on the right side of the limiting component 11, the exhaust component 13 is located on the front side of the limiting component 11, and the supply component 14 is located on top of the limiting component 11. By setting the isolation mechanism 1, the limiting component 11, together with the sealing component 12, the exhaust component 13, and the supply component 14, can form a structure that provides an independent isolation environment for the secondary intelligent device. This allows for emergency isolation of the secondary intelligent device when it malfunctions and requires emergency isolation. The limiting structure, composed of the sandwich shell 111, the limiting liner 112, and the one-way valve 113, can limit the secondary intelligent device through its self-formed support structure and provide an inert gas protective space. In the event of a malfunction, inert gas can be introduced into the secondary intelligent equipment to isolate it from the air and prevent accidents such as combustion. The sealed structure consisting of the airbag 121, wire hole 122, and filling valve 123 can seal the wires to prevent inert gas from leaking out of gaps when emergency isolation is required due to a malfunction of the secondary intelligent equipment and the primary switchgear. The inert gas discharge structure consisting of the air intake square pipe 131, exhaust fan 132, exhaust pipe 133, and exhaust valve 134 can discharge excess and seeping inert gas from the interlayer shell 111 when connected to an outdoor delivery pipeline, preventing inert gas from polluting the indoor environment. The inert gas delivery structure consisting of the mounting base 141, supply tank 142, and supply valve 143 can provide inert gas to the interlayer shell 111 for emergency isolation of the secondary intelligent equipment.

[0044] The limiting component 11 includes a sandwich shell 111, a limiting liner 112, and a one-way valve 113. The limiting liner 112 is bolted to the inside of the sandwich shell 111, and the one-way valve 113 is connected to the top of the limiting liner 112. The input end of the one-way valve 113 penetrates through the top of the sandwich shell 111. By setting the limiting component 11, the limiting structure formed by the sandwich shell 111, the limiting liner 112, and the one-way valve 113 can limit the secondary intelligent device through its own supporting structure and provide an inert gas protection space. In the event of a malfunction, it can... Inert gas is introduced into the secondary intelligent device to isolate it from the air and prevent accidents such as combustion. The support structure formed by the sandwich shell 111 can provide a limit for the limiting liner 112, allowing the limiting liner 112 to be removed from the sandwich shell 111. The limiting liner 112 can limit the internal secondary intelligent device, keeping it inside the sandwich shell 111. The one-way valve 113 can deliver the inert gas temporarily stored in the sandwich shell 111 to the secondary intelligent device, thereby using the inert gas to isolate it from the outside air.

[0045] The sealing component 12 includes a sealing airbag 121, a wire hole 122, and a filling valve 123. The sealing airbag 121 is bolted to the right side of the sandwich shell 111. The wire hole 122 is located on both sides of the sealing airbag 121. The filling valve 123 is connected to the top of the sealing airbag 121 and is located inside the sandwich shell 111. By setting the sealing component 12, the sealing airbag 121, the wire hole 122, and the filling valve 123 form a sealed structure. When the secondary intelligent device and the primary switchgear need to be isolated in an emergency due to a fault, the wire can be sealed to prevent inert gas from leaking from the gap. When the filling valve 123 receives the signal transmitted when the secondary intelligent device and the primary switchgear fail, the gas at the sandwich shell 111 can be sent into the sealing airbag 121, causing the sealing airbag 121 to expand due to the gas filling, thereby reducing the inner diameter of the wire hole 122, so that the sealing airbag 121 wraps the wire to achieve a seal.

[0046] The exhaust assembly 13 includes an air intake square tube 131, an exhaust fan 132, an exhaust pipe 133, and an exhaust valve 134. The air intake square tube 131 is bolted to the front side of the sandwich shell 111. The exhaust fan 132 is connected to the top of the front side of the air intake square tube 131. The exhaust pipe 133 is connected to the output end of the exhaust fan 132. The exhaust valve 134 is connected to the output end of the exhaust pipe 133. By setting the exhaust assembly 13, the air intake square tube 131, the exhaust fan 132, the exhaust pipe 133, and the exhaust valve 134 form a complete system. The inert gas emission structure can discharge excess and seeping inert gas from the sandwich shell 111 when connected to an outdoor delivery pipe, thus preventing inert gas from polluting the indoor environment. The exhaust fan 132 draws the gas from the intake square pipe 131 to the exhaust pipe 133, which can create a negative pressure at the input end of the intake square pipe 131, thereby drawing in the gas overflowing from the sandwich shell 111. Then, when the exhaust valve 134 is connected to an outdoor delivery pipe, the gas is discharged to the outside, thus preventing inert gas from polluting the indoor environment.

[0047] The supply component 14 includes a mounting base 141, a supply tank 142, and a supply valve 143. The mounting base 141 is bolted to the top of the interlayer shell 111, the supply tank 142 is threaded to the top of the mounting base 141, and the supply valve 143 is connected to the bottom of the supply tank 142. The output end of the supply valve 143 is connected to the top of the interlayer shell 111. By setting the supply component 14, the inert gas delivery structure composed of the mounting base 141, the supply tank 142, and the supply valve 143 can provide inert gas to the interlayer shell 111 for emergency isolation of secondary intelligent devices. The inert gas is stored in the supply tank 142. When the supply tank 142 is installed on the interlayer shell 111 through the mounting base 141, the inert gas can be sent into the interlayer shell 111 by the supply valve 143 to achieve the effect of providing inert gas to the interlayer shell 111.

[0048] The working principle of this embodiment is as follows: First, connect the one-way valve 113, filling gas valve 123, exhaust valve 134, and supply valve 143 to an external power supply and PLC controller. Then, connect the exhaust valve 134 to an outdoor delivery pipeline. When emergency isolation of the secondary intelligent equipment is required, the user controls the PLC controller to start the supply valve 143, allowing the supply valve 143 to send the inert gas in the supply tank 142 into the jacket shell 111. Then, start the filling gas valve 123, allowing the filling gas valve 123 to send the gas into the sealed... The airbag 121 is inflated to seal the wire hole 122. Then, the one-way valve 113 is activated to send the gas inside the interlayer shell 111 into the secondary intelligent device, allowing the inert gas to fill the secondary intelligent device for isolation. Finally, the exhaust fan 132 is activated to draw the inert gas overflowing from the interlayer shell 111 into the air intake square pipe 131, and then through the exhaust pipe 133 and exhaust valve 134 to the external outdoor delivery pipeline, and finally discharged outdoors.

[0049] Example 2

[0050] refer to Figure 5-8A primary and secondary integrated ring network box with an emergency isolation structure also includes a protective mechanism 2. The protective mechanism 2 includes a limiting component 21, a locking component 22, a discharge component 23, a diversion component 24, and a blocking component 25. The limiting component 21 is located on the right side of the sealing component 12, the locking component 22 is located on both sides inside the limiting component 21, the discharge component 23 is located in front of the limiting component 21, the diversion component 24 is located inside the locking component 22, and the blocking component 25 is located inside the diversion component 24. By setting the protective mechanism 2, the limiting component 21, together with the locking component 22, the discharge component 23, the diversion component 24, and the blocking component 25, can form a structure that provides an independent isolation environment for the primary switchgear. This allows for emergency isolation of the primary switchgear when a fault occurs. The limiting structure formed by the mezzanine box 211, the limiting seat 212, the storage tank 213, and the delivery valve 214 can provide limits for the primary switchgear and provide an emergency isolation environment. The fixing structure consisting of locking frame 221, guide slider 222, and locking turn plate 223 can provide a limit for the diversion component 24, and facilitate the removal and insertion of the diversion component 24. The discharge structure consisting of diversion square tube 231, supply fan 232, discharge pipe 233, and discharge valve 234 can collect the inert gas overflowing from the primary switchgear in the mezzanine box 211 due to emergency isolation, and discharge the overflowing inert gas to the outside when connected to an outdoor delivery pipeline to avoid inert gas contamination of the indoor environment. The diversion structure consisting of diversion inner partition 241, limiting airbag 242, and pressurizing valve 243 can perform targeted limiting and isolation according to the primary switchgear. The automatic sealing gas supply structure consisting of delivery hole 251, one-way diaphragm 252, and vented bellows 253 can deliver inert gas into the primary switchgear as the pressure increases, and can also automatically close when the pressure decreases to avoid excessive inert gas flowing into the primary switchgear and causing waste.

[0051] The limiting component 21 includes a mezzanine box 211, a limiting seat 212, a storage tank 213, and a delivery valve 214. The mezzanine box 211 is bolted to the right side of the mezzanine outer shell 111, and the left side of the mezzanine box 211 is bolted to the right side of the sealed airbag 121. The limiting seat 212 is bolted to the top of the mezzanine box 211, and the storage tank 213 is threaded to the inside of the limiting seat 212. The delivery valve 214 is connected to the bottom of the storage tank 213, and the output end of the delivery valve 214 is connected to the top of the mezzanine box 211. By setting the limiting component 21, the mezzanine box 211, the limiting seat 212, and the storage tank are connected. The limiting structure composed of 213 and delivery valve 214 can provide a limit for the primary switchgear and provide an emergency isolation environment for it. The locking component 22 is limited by the mezzanine box 211, which in turn limits the flow-guiding component 24, thereby allowing the flow-guiding component 24 to limit the primary switchgear within the mezzanine box 211. The storage tank 213 can store inert gas and is installed on the top of the mezzanine box 211 through the limiting seat 212. The delivery valve 214 delivers inert gas into the mezzanine box 211 to provide inert gas for emergency isolation of the primary switchgear.

[0052] The locking assembly 22 includes a locking frame 221, a guide slider 222, and a locking rotating plate 223. The three locking frames 221 are bolted to the inner side, top, and bottom of the mezzanine box 211, respectively. The guide slider 222 is slidably connected to the opposite side of the locking frames 221. The locking rotating plate 223 is rotatably connected to the front side of the locking frames 221, with its rear side contacting the front side of the guide slider 222. By providing the locking assembly 22, the fixed structure formed by the locking frame 221, guide slider 222, and locking rotating plate 223 can provide a limit for the drainage assembly 24. Simultaneously, it facilitates the removal and insertion of the diversion component 24. The locking frame 221 provides guidance for the forward and backward movement of the guide slider 222. When the guide slider 222 is completely placed inside the locking frame 221, the locking plate 223 can be rotated to block the front of the guide slider 222, achieving the effect of temporarily locking the guide slider 222. When the locking plate 223 is rotated to move the guide slider 222 away, the guide slider 222 can drive the diversion component 24 to be removed from the locking frame 221, which facilitates the subsequent replacement and maintenance of the primary switchgear inside the diversion component 24.

[0053] The discharge assembly 23 includes a diversion square tube 231, a blower fan 232, a discharge pipe 233, and a discharge valve 234. The diversion square tube 231 is bolted to the front side of the mezzanine box 211. The blower fan 232 is connected to the top of the front side of the diversion square tube 231. The discharge pipe 233 is connected to the output end of the blower fan 232. The discharge valve 234 is connected to the output end of the discharge pipe 233. By setting the discharge assembly 23, the diversion square tube 231 is connected to the blower fan 232, the discharge pipe 233, and the discharge valve 234. The exhaust structure can collect the inert gas overflowing from the emergency isolation primary switchgear in the mezzanine box 211, and discharge the overflowing inert gas to the outside when connected to an outdoor delivery pipeline, thus preventing inert gas from polluting the indoor environment. The air at the diversion square tube 231 is sent to the exhaust pipe 233 by the supply fan 232, which can generate negative pressure in the diversion square tube 231, thereby drawing in the overflowing inert gas. When the exhaust valve 234 is connected to an outdoor delivery pipeline, the inert gas can be discharged to the outside environment.

[0054] The drainage assembly 24 includes a drainage inner partition 241, a limiting airbag 242, and a pressurizing valve 243. The drainage inner partition 241 is bolted to the top and bottom of the guide slider 222, the limiting airbag 242 is bolted to the surface of the drainage inner partition 241, and the pressurizing valve 243 is connected to the inside of the drainage inner partition 241. By setting the drainage assembly 24, the drainage structure composed of the drainage inner partition 241, the limiting airbag 242, and the pressurizing valve 243 can perform targeted limiting and isolation according to the primary switching equipment. The isolation system allows for independent limiting of each structure within the primary switchgear via the inner partition 241. When isolation of the primary switchgear is required, gas from the interlayer box 211 can be introduced into the corresponding inner partition 241 via the pressurizing valve 243. This enables emergency isolation of the primary switchgear within the inner partition 241. Furthermore, the limiting airbag 242 can continuously apply centripetal force to the inner partition 241 through its own elasticity, preventing the filling of inert gas from causing gap expansion and increasing the airtightness during isolation.

[0055] The barrier component 25 includes a delivery hole 251, a one-way diaphragm 252, and a bellows vent 253. The delivery hole 251 is located inside the inner diaphragm 241, the one-way diaphragm 252 is snapped into the inner side of the delivery hole 251, and the bellows vent 253 is connected to the output end of the one-way diaphragm 252. By setting the barrier component 25, the automatic closed gas supply structure formed by the delivery hole 251, the one-way diaphragm 252, and the bellows vent 253 can deliver inert gas into the primary switching equipment as the pressure increases, and can also automatically close when the pressure decreases, preventing excessive inert gas from entering. Inert gas flowing into the primary switchgear would be wasted. Instead, inert gas is introduced into the one-way diaphragm 252 through the delivery hole 251. The one-way diaphragm 252 can deliver gas unidirectionally into the vent bellows 253. Then, through the expansion of the vent bellows 253, the holes on its surface can be opened, allowing the inert gas to flow into the primary switchgear. When the one-way diaphragm 252 stops delivering inert gas, the vent bellows 253 loses the support of the gas and resets itself with its own elasticity, thereby folding and closing the holes on its surface, achieving the effect of automatically opening and closing with pressure changes.

[0056] The working principle of this embodiment is as follows: First, connect the external power supply and PLC controller to the delivery valve 214, discharge valve 234, blower fan 232, and pressurizing valve 243. Then, connect the discharge valve 234 to an outdoor delivery pipeline. When emergency isolation of the primary switchgear is required, the user operates the PLC controller to start the delivery valve 214, allowing it to send the inert gas from the storage tank 213 into the jacketed box 211. Then, start the pressurizing valve 243, which will send the inert gas from the jacketed box 211 into the inner guide partition 241. The inner guide partition 241 then guides the inert gas to the delivery port 251, which in turn sends the inert gas through the one-way diaphragm 252 to the bellows vent 25. Inside the 3rd compartment, the vent bellows 253 will deliver inert gas to the primary switchgear until it is filled with inert gas. Then, the fan 232 will be started, and the diversion square pipe 231 will draw in the inert gas and send it to the discharge pipe 233. Then, it will be sent to the external outdoor delivery pipeline through the discharge valve 234 and finally discharged outdoors. When maintenance is required after emergency isolation, the delivery valve 214 will be closed. After all the inert gas in the primary switchgear has been discharged, the interlayer box 211 will be opened, and the locking plate 223 will be rotated until the locking plate 223 no longer contacts the guide slider 222. Then, the guide slider 222 will be removed forward from the locking frame 221, and the primary switchgear in the inner diversion compartment 241 can be repaired and replaced.

[0057] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. Those skilled in the art can make modifications to this embodiment without contributing any inventive step after reading this specification. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A primary and secondary integrated ring network cage with an emergency isolation structure, comprising an isolation mechanism (1) and a protective mechanism (2), characterized in that: The protective mechanism (2) is located on the right side of the isolation mechanism (1). The isolation mechanism (1) includes a limiting component (11), a closing component (12), an exhaust component (13), and a supply component (14). The closing component (12) is located on the right side of the limiting component (11). The exhaust component (13) is located in front of the limiting component (11). The supply component (14) is located on top of the limiting component (11). The protective mechanism (2) includes a limiting component (21), a locking component (22), a discharge component (23), a drainage component (24), and a barrier component (25). The limiting component (21) is located on the right side of the closing component (12). The locking component (22) is located on both sides inside the limiting component (21). The discharge component (23) is located in front of the limiting component (21). The drainage component (24) is located inside the locking component (22). The barrier component (25) is located inside the drainage component (24). The limiting assembly (11) includes a sandwich shell (111), a limiting liner (112), and a one-way valve (113). The limiting liner (112) is bolted to the inside of the sandwich shell (111), and the one-way valve (113) is connected to the top of the limiting liner (112). The input end of the one-way valve (113) passes through the top of the sandwich shell (111). The sealing assembly (12) includes a sealing airbag (121), a wire hole (122), and a filling valve (123). The sealing airbag (121) is bolted to the right side of the sandwich shell (111). The wire hole (122) is opened on both sides of the sealing airbag (121). The filling valve (123) is connected to the top of the sealing airbag (121) and is located inside the sandwich shell (111). The exhaust assembly (13) includes an air intake square tube (131), an exhaust fan (132), an exhaust pipe (133), and an exhaust valve (134). The air intake square tube (131) is bolted to the front side of the sandwich shell (111). The exhaust fan (132) is connected to the top of the front side of the air intake square tube (131). The exhaust pipe (133) is connected to the output end of the exhaust fan (132). The exhaust valve (134) is connected to the output end of the exhaust pipe (133). The supply assembly (14) includes a mounting base (141), a supply tank (142), and a supply valve (143). The mounting base (141) is bolted to the top of the sandwich shell (111), the supply tank (142) is threaded to the top of the mounting base (141), and the supply valve (143) is connected to the bottom of the supply tank (142). The output end of the supply valve (143) is connected to the top of the sandwich shell (111). The limiting component (21) includes a mezzanine box (211), a limiting seat (212), a storage tank (213), and a delivery valve (214). The mezzanine box (211) is bolted to the right side of the mezzanine shell (111), and the left side of the mezzanine box (211) is bolted to the right side of the sealed airbag (121). The limiting seat (212) is bolted to the top of the mezzanine box (211), and the storage tank (213) is threaded to the inside of the limiting seat (212). The delivery valve (214) is connected to the bottom of the storage tank (213), and the output end of the delivery valve (214) is connected to the top of the mezzanine box (211). The locking assembly (22) includes a locking frame (221), a guide slider (222), and a locking rotating plate (223). The three locking frames (221) are respectively bolted to the inner side, the top of the inner side, and the bottom of the inner side of the mezzanine box (211). The guide slider (222) is slidably connected to the opposite side of the locking frame (221). The locking rotating plate (223) is rotatably connected to the front side of the locking frame (221). The rear side of the locking rotating plate (223) contacts the front side of the guide slider (222). The discharge assembly (23) includes a drainage square tube (231), a blower fan (232), a discharge pipe (233), and a discharge valve (234). The drainage square tube (231) is bolted to the front side of the mezzanine box (211). The blower fan (232) is connected to the top of the front side of the drainage square tube (231). The discharge pipe (233) is connected to the output end of the blower fan (232). The discharge valve (234) is connected to the output end of the discharge pipe (233). The drainage assembly (24) includes a drainage inner diaphragm (241), a limiting airbag (242), and a pressurizing valve (243). The drainage inner diaphragm (241) is bolted to the top and bottom of the guide slider (222). The limiting airbag (242) is bolted to the surface of the drainage inner diaphragm (241). The pressurizing valve (243) is connected to the inside of the drainage inner diaphragm (241). The barrier component (25) includes a delivery hole (251), a one-way diaphragm (252), and a vented bellows (253). The delivery hole (251) is located inside the inner diaphragm (241), the one-way diaphragm (252) is snapped into the inner side of the delivery hole (251), and the vented bellows (253) is connected to the output end of the one-way diaphragm (252).

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