Solid insulation structure of ring main unit

Abstract

The utility model relates to the technical field of ring main units, in particular to a ring main unit solid insulation structure which comprises a shell and wire bodies, an insulation layer is arranged on the inner side of the shell, the wire bodies are wrapped in the insulation layer, the connecting positions of the wire bodies are arranged in the insulation layer, and sealing connecting mechanisms are arranged on the two sides of the shell. When the device is used, heat of the wire body is used for heating the storage chamber, when the temperature in the storage chamber exceeds a specified range, the piston disc is pushed to move outwards, and when the temperature exceeds the specified range for a period of time, the piston disc moves to the two ends, so that carbon dioxide gas flows out along the through holes; the fixing caps are pushed to move towards the two sides by using air pressure while combustion of the wire body is avoided by using carbon dioxide, so that the wire body is disconnected.

Description

Technical Field

[0001] The utility model relates to the technical field of ring network cabinets, in particular to a solid insulation structure of a ring network cabinet. Background Art

[0002] Ring network refers to a ring distribution network, that is, the power supply trunk forms a closed ring, and the power supply supplies power to this ring trunk. When the ring network cabinet is used, a solid insulation structure is used to seal and insulate the line body. However, the general solid insulation structure cannot perform cumulative detection when the line body has a high temperature phenomenon. Only when the line body overheats and burns can the power be cut off, which is not conducive to the long-term use of the device. Summary of the invention

[0003] The utility model aims to provide a solid insulation structure of a ring main unit to solve the problems raised in the above-mentioned background technology.

[0004] A solid insulation structure of a ring main unit comprises a shell and a wire body: an insulating layer is arranged on the inner side of the shell, the wire body is wrapped inside the insulating layer, the connection of the wire body is arranged inside the insulating layer, and sealing connection mechanisms are arranged on both sides of the shell.

[0005] Preferably, a storage chamber which is wide in the middle and narrow at both sides is provided inside the shell, and a moving mechanism is provided inside the storage chamber.

[0006] Gas is stored in the storage chamber, and when the temperature in the storage chamber rises, the gas pushes the moving mechanism to move outward.

[0007] Preferably, carbon dioxide gas is stored inside the storage chamber, and the moving mechanism includes a fixed rod, a screw and a piston disc, two piston discs are provided, and the two piston discs are symmetrically slidably arranged inside the storage chamber, and fixed rods are provided on opposite sides of the two piston discs, and a screw is provided inside the fixed rods.

[0008] When the device is in use, when the internal gas temperature of the storage chamber increases, it will continuously push the fixed rod and the piston disc to move outward, and the screw rod can increase the resistance of the piston disc during movement. Since there is not enough external force to restore the piston disc after moving outward, when the device reaches a high temperature for a period of time, the piston disc will also move outward to a fixed position.

[0009] Preferably, a through hole is provided inside the insulating layer, and a fixing path connected to the through hole is provided on the side of the storage chamber.

[0010] When the device is in use, after the piston disc moves to the bottom of the storage chamber, the gas in the storage chamber will flow into the through hole through the fixed channel, thereby wrapping the wire body with carbon dioxide to prevent the wire body from burning.

[0011] Preferably, a heat conducting plate is provided on the side of the center of the storage chamber, and the heat conducting plate is embedded inside the insulating layer.

[0012] When the device is in use, the temperature of the wire body can be transferred to the storage chamber through the heat conduction plate, thereby heating the gas in the storage chamber.

[0013] Preferably, the sealing connection mechanism comprises a fixing cap and a sealing ring, the fixing cap is embedded in the interior of the shell, and a sealing ring is provided on a side of the fixing cap that is in contact with the shell.

[0014] By embedding the fixing cap into the interior of the shell and then increasing the friction force on the wire body through the sealing ring, relative movement between the wire body and the shell is avoided; when the gas in the storage chamber flows out, the air pressure in the shell will increase, thereby pushing the fixing cap and the sealing ring to move outward, and the friction force between the sealing ring and the wire body is large, so it will drive the wire body to move to both sides, thereby disconnecting the connection of the wire body.

[0015] The beneficial effects of the utility model are:

[0016] 1. When the device is in use, the heat of the wire is used to heat the storage chamber. When the temperature in the storage chamber exceeds the specified range, the piston disc will be pushed to move outward. When the temperature exceeds the specified range for a period of time, the piston disc will move to both ends, allowing the carbon dioxide gas to flow out through the through hole. While using carbon dioxide to prevent the wire from burning, the air pressure is used to push the fixing cap to move to both sides, thereby disconnecting the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall front cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the fixed rod and the screw rod of the utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the heat conducting plate and the insulating layer of the utility model.

[0021] In the figure: 1. Shell; 2. Storage chamber; 3. Fixed rod; 4. Screw rod; 5. Piston disc; 6. Heat conducting plate; 7. Insulating layer; 8. Through hole; 9. Fixed cap; 10. Sealing ring; 11. Wire body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] When implementing: Figure 1-3 As shown, a solid insulation structure of a ring main unit includes a shell 1 and a wire body 11: an insulating layer 7 is provided on the inner side of the shell 1, the wire body 11 is wrapped inside the insulating layer 7, the connection of the wire body 11 is provided inside the insulating layer 7, and sealing connection mechanisms are provided on both sides of the shell 1.

[0024] A storage chamber 2 which is wide in the middle and narrow at two sides is provided inside the housing 1 , and a moving mechanism is arranged inside the storage chamber 2 .

[0025] Gas is stored in the storage chamber 2. When the temperature in the storage chamber 2 rises, the gas will push the moving mechanism to move outward.

[0026] Carbon dioxide gas is stored inside the storage chamber 2, and the moving mechanism includes a fixed rod 3, a screw rod 4 and a piston disc 5. Two piston discs 5 are provided, and the two piston discs 5 are symmetrically slidably arranged inside the storage chamber 2. Fixed rods 3 are arranged on opposite sides of the two piston discs 5, and screw rods 4 are arranged inside the fixed rods 3.

[0027] When the device is in use, when the internal gas temperature of the storage chamber 2 increases, it will continuously push the fixing rod 3 and the piston disc 5 to move outward, and the screw rod 4 can increase the resistance of the piston disc 5 during movement. Since there is not enough external force to restore the piston disc 5 after moving outward, when the device reaches a high temperature for a period of time, the piston disc 5 will also move outward to a fixed position.

[0028] A through hole 8 is provided inside the insulating layer 7 , and a fixing path connected to the through hole 8 is provided on the side of the storage chamber 2 .

[0029] When the device is in use, after the piston disc 5 moves to the bottom of the storage chamber 2, the gas in the storage chamber 2 will flow into the through hole 8 through the fixed channel, thereby wrapping the wire body 11 with carbon dioxide to prevent the wire body 11 from burning.

[0030] A heat conducting plate 6 is disposed on the side of the center of the storage chamber 2 , and the heat conducting plate 6 is embedded in the interior of the insulating layer 7 .

[0031] When the device is in use, the temperature of the wire body 11 can be transferred to the storage chamber 2 through the heat conducting plate 6 , thereby heating the gas in the storage chamber 2 .

[0032] The sealing connection mechanism comprises a fixing cap 9 and a sealing ring 10 . The fixing cap 9 is embedded in the housing 1 , and a sealing ring 10 is provided on one side of the fixing cap 9 which is in contact with the housing 1 .

[0033] By embedding the fixing cap 9 into the interior of the shell 1 and then increasing the friction force on the wire body 11 through the sealing ring 10, relative movement between the wire body 11 and the shell 1 is avoided; when the gas in the storage chamber 2 flows out, the air pressure in the shell 1 will increase, thereby pushing the fixing cap 9 and the sealing ring 10 to move outward, and the friction force between the sealing ring 10 and the wire body 11 is relatively large, so it will drive the wire body 11 to move to both sides, thereby disconnecting the connection of the wire body 11.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A solid insulation structure of a ring main unit, comprising a housing (1) and a line body (11), characterized in that: An insulating layer (7) is provided on the inner side of the shell (1), a wire body (11) is wrapped inside the insulating layer (7), a connection point of the wire body (11) is provided inside the insulating layer (7), and sealing connection mechanisms are provided on both sides of the shell (1).

2. A solid insulation structure of a ring main unit according to claim 1, characterized in that: A storage chamber (2) which is wide in the middle and narrow at two sides is provided inside the housing (1), and a moving mechanism is provided inside the storage chamber (2).

3. A solid insulation structure of a ring main unit according to claim 2, characterized in that: Carbon dioxide gas is stored in the storage chamber (2), and the moving mechanism comprises a fixed rod (3), a screw rod (4) and a piston disc (5). Two piston discs (5) are provided, and the two piston discs (5) are symmetrically slidably arranged in the storage chamber (2). The fixed rods (3) are arranged on opposite sides of the two piston discs (5), and the screw rod (4) is arranged inside the fixed rods (3).

4. The solid insulation structure of a ring main unit according to claim 2, characterized in that: A through hole (8) is provided inside the insulating layer (7), and a fixing path connected to the through hole (8) is provided on the side surface of the storage chamber (2).

5. The solid insulation structure of a ring main unit according to claim 2, characterized in that: A heat conducting plate (6) is arranged on the side of the center of the storage chamber (2), and the heat conducting plate (6) is embedded in the interior of the insulating layer (7).

6. The solid insulation structure of a ring main unit according to claim 1, characterized in that: The sealing connection mechanism comprises a fixing cap (9) and a sealing ring (10); the fixing cap (9) is embedded in the interior of the housing (1); and a sealing ring (10) is provided on a side of the fixing cap (9) that is in contact with the housing (1).

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