Isolating switch with fully-sealed structure

Abstract

The utility model provides an isolating switch with a fully-sealed structure, which relates to the technical field of isolating switches and comprises a sealing shell, a sealing cover is arranged between the tops of the sealing shell, an oil filling pipe penetrating to the bottom is fixed at the top of the sealing cover, a floating block is arranged below the sealing shell, a marker post is fixed at the top of the floating block, and a sealing cover is arranged on the sealing shell. The top of the marker post penetrates to the position above the sealing cover in a sliding mode, a sealing ring is fixed between the inner walls of the oil injection pipe, and a sealing block is arranged in the oil injection pipe. In the injection process, along with rising of the liquid level of the insulating oil in the sealing shell, the floating block is driven to rise, then the marker post is driven to slide upwards, people can obtain the liquid level position of the injected insulating oil in the sealing shell by observing the positions of the marker post and the top of the sealing cover, and then the oil inlet speed of the oil injection pipe is controlled.

Description

Technical Field

[0001] This utility model relates to the field of disconnecting switch technology, and in particular to a fully sealed disconnecting switch. Background Technology

[0002] A disconnector switch is a switching device primarily used for isolating power supplies, switching operations, and connecting and disconnecting low-current circuits; it does not have arc-extinguishing capabilities. When using a disconnector switch to transmit higher voltages, it needs to be sealed and then filled with insulating oil to ensure stable current transmission at the connection points and prevent arcing.

[0003] Currently, when sealing disconnect switches, a monolithic sealing method is usually used, and then insulating oil is injected into the sealing shell. However, during injection, it is impossible to know the liquid level of the insulating oil inside the sealing shell. Therefore, when it is almost full, people cannot reduce the flow rate of the injected oil in time, which makes the oil easily overflow. Utility Model Content

[0004] To address the problems of existing technologies, this utility model provides a fully sealed disconnecting switch. The basic concept of the technical solution adopted by this utility model to solve the aforementioned technical problems is as follows:

[0005] A fully sealed disconnect switch includes a sealing shell, a sealing cover disposed between the top of the sealing shell, an oil injection pipe extending to the bottom fixed to the top of the sealing cover, a float disposed below the sealing shell, a marker fixed to the top of the float, the top of the marker sliding through to the top of the sealing cover, a sealing ring fixed between the inner walls of the oil injection pipe, and a sealing block disposed inside the oil injection pipe, the top of the sealing block and the bottom of the sealing ring fitting together.

[0006] Optionally, a support ring is fixed between the inner walls of the oil injection pipe, and a spring is fixed to the top of the support ring.

[0007] Optionally, the top of the spring is fixed to the bottom of the sealing block, and a gap is left between the outer surface of the sealing block and the inner wall of the oil injection pipe.

[0008] Optionally, a sealing frame is fixed to the outer surface of the sealing shell near the top edge and the outer surface of the sealing cover near the bottom edge.

[0009] Optionally, each of the two sealing frames has an injection groove on one side, and the top of the sealing cover is fixed with a lifting ring at each of the four corners.

[0010] Optionally, the inner bottom surface of the sealing shell is provided with a bending plate, and ceramic resistors are fixed to the top of the bending plate near the two side edges.

[0011] Optionally, a gate is provided between the tops of the two ceramic resistors, and copper pillars are fixed on both sides of the sealing shell, with one end of each copper pillar connected to the two ends of the gate.

[0012] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0013] 1. In this utility model, the sealing shell and the sealing cover are first sealed together, and then the insulating oil is injected into the interior of the sealing shell through the oil injection pipe. During the injection process, as the liquid level of the insulating oil inside the sealing shell rises, it will drive the float to rise, which in turn will drive the marker to slide upward. By observing the position of the marker and the top of the sealing cover, people can obtain the liquid level position of the insulating oil injected inside the sealing shell, and thus control the oil injection rate of the oil injection pipe.

[0014] 2. In this utility model, when the insulating oil enters the sealing shell through the oil injection pipe, the insulating oil will first press the sealing block downward, thereby opening the sealing part between the sealing block and the sealing ring. At this time, the insulating oil flows into the support ring through the gap between the sealing block and the oil injection pipe, and then enters the interior of the sealing shell. At this time, the spring is in a compressed state. When the oil inside the sealing shell is full and overflows into the oil injection pipe to the bottom of the sealing block, it can no longer exert downward pressure on the sealing block. At this time, under the action of the elastic force of the spring, the sealing block is reset, thereby cutting off the oil injection pipe. Attached Figure Description

[0015] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0016] Figure 1 This utility model provides a front-view three-dimensional structural diagram of a fully sealed disconnect switch;

[0017] Figure 2 This utility model provides a cross-sectional three-dimensional structural diagram of the sealing shell in a fully sealed disconnect switch;

[0018] Figure 3 This utility model provides a cross-sectional three-dimensional structural diagram of the sealing cover in a fully sealed disconnect switch;

[0019] Figure 4 This utility model Figure 3 A magnified view of point A in the middle.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Sealing shell; 2. Sealing cover; 3. Lifting ring; 4. Copper column; 5. Sealing frame; 6. Glue injection groove; 7. Bending plate; 8. Ceramic resistor; 9. Gate plate; 10. Marker; 11. Float; 12. Oil injection pipe; 13. Sealing ring; 14. Sealing block; 15. Support ring; 16. Spring.

[0022] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Example 1, such as Figure 1-4 As shown, this utility model provides a fully sealed disconnect switch technical solution: including a sealing shell 1, a sealing cover 2 is provided between the top of the sealing shell 1, an oil injection pipe 12 extending to the bottom is fixed on the top of the sealing cover 2, a float 11 is provided below the sealing shell 1, a marker 10 is fixed on the top of the float 11, the top of the marker 10 slides through to the top of the sealing cover 2, a sealing ring 13 is fixed between the inner walls of the oil injection pipe 12, a sealing block 14 is provided inside the oil injection pipe 12, and the top of the sealing block 14 and the bottom of the sealing ring 13 are in contact with each other.

[0025] The effect achieved by the entire embodiment 1 is as follows: First, the sealing shell 1 and the sealing cover 2 are sealed and connected. Then, the insulating oil is injected into the interior of the sealing shell 1 through the oil injection pipe 12. During the injection process, as the liquid level of the insulating oil inside the sealing shell 1 rises, it will drive the float 11 to rise, which in turn will drive the marker 10 to slide upward. By observing the position of the marker 10 and the top of the sealing cover 2, people can obtain the liquid level position of the insulating oil injected into the sealing shell 1, and thus control the oil injection rate of the oil injection pipe 12.

[0026] Example 2, as Figure 1-4 As shown, a support ring 15 is fixed between the inner walls of the oil injection pipe 12, and a spring 16 is fixed to the top of the support ring 15. The top of the spring 16 is fixed to the bottom of the sealing block 14. A gap is left between the outer surface of the sealing block 14 and the inner wall of the oil injection pipe 12. Sealing frames 5 are fixed near the top edge of the outer surface of the sealing shell 1 and near the bottom edge of the outer surface of the sealing cover 2. An injection groove 6 is opened on the opposite side of the two sealing frames 5. A lifting ring 3 is fixed at the four corners of the top of the sealing cover 2. A bending plate 7 is provided on the inner bottom surface of the sealing shell 1. Ceramic resistors 8 are fixed near the two side edges of the top of the bending plate 7. A gate plate 9 is provided between the tops of the two ceramic resistors 8. Copper pillars 4 are fixed on both sides of the sealing shell 1. One end of each copper pillar 4 is connected to the two ends of the gate plate 9.

[0027] The effect achieved by the entire embodiment 2 is that when the insulating oil enters the interior of the sealing shell 1 through the oil injection pipe 12, the insulating oil will first press the sealing block 14 downward, thereby opening the sealing part between the sealing block 14 and the sealing ring 13. At this time, the insulating oil flows into the support ring 15 through the gap between the sealing block 14 and the oil injection pipe 12, and then enters the interior of the sealing shell 1. At this time, the spring 16 is in a compressed state. When the oil inside the sealing shell 1 is full and overflows into the oil injection pipe 12 to reach the bottom of the sealing block 14, it can no longer exert downward pressure on the sealing block 14. At this time, under the action of the elastic force of the spring 16, the sealing block 14 is reset, thereby cutting off the oil injection pipe 12.

[0028] Working principle: First, the sealing shell 1 and the sealing cover 2 are sealed together. Then, insulating oil is injected into the interior of the sealing shell 1 through the oil injection pipe 12. During the injection process, as the level of the insulating oil inside the sealing shell 1 rises, it will cause the float 11 to rise, which in turn will cause the indicator 10 to slide upward. By observing the position of the indicator 10 and the top of the sealing cover 2, the level of the insulating oil injected into the sealing shell 1 can be obtained, thereby controlling the oil injection rate of the oil injection pipe 12. When the insulating oil enters the interior of the sealing shell 1 through the oil injection pipe 12, the insulating oil will first... Pressing the sealing block 14 downwards opens the sealing area between the sealing block 14 and the sealing ring 13. At this time, the insulating oil flows into the support ring 15 through the gap between the sealing block 14 and the oil injection pipe 12, and then enters the interior of the sealing shell 1. At this time, the spring 16 is in a compressed state. When the oil inside the sealing shell 1 is full and overflows into the oil injection pipe 12 to the bottom of the sealing block 14, it can no longer exert downward pressure on the sealing block 14. At this time, under the action of the elastic force of the spring 16, the sealing block 14 is reset, thereby cutting off the oil injection pipe 12.

[0029] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A fully sealed structure disconnector comprising a sealed enclosure (1), characterized in that: A sealing cover (2) is provided between the top of the sealing shell (1). An oil injection pipe (12) extending to the bottom is fixed to the top of the sealing cover (2). A float (11) is provided below the sealing shell (1). A marker (10) is fixed to the top of the float (11). The top of the marker (10) slides through to the top of the sealing cover (2). A sealing ring (13) is fixed between the inner walls of the oil injection pipe (12). A sealing block (14) is provided inside the oil injection pipe (12). The top of the sealing block (14) and the bottom of the sealing ring (13) fit together.

2. A totally enclosed structural disconnector according to claim 1, characterized in that: A support ring (15) is fixed between the inner walls of the oil injection pipe (12), and a spring (16) is fixed to the top of the support ring (15).

3. A fully sealed structural disconnector according to claim 2, characterized in that: The top of the spring (16) is fixed to the bottom of the sealing block (14), and there is a gap between the outer surface of the sealing block (14) and the inner wall of the oil injection pipe (12).

4. A fully sealed structural disconnector according to claim 3, characterized in that: A sealing frame (5) is fixed to the outer surface of the sealing shell (1) near the top edge and the outer surface of the sealing cover (2) near the bottom edge.

5. A totally enclosed structural disconnector according to claim 4, characterized in that: Each of the two sealing frames (5) has an injection groove (6) on one side of its opposite side, and the top of the sealing cover (2) is fixed with a lifting ring (3) at each of the four corners.

6. A fully sealed disconnect switch according to claim 5, characterized in that: The inner bottom surface of the sealing shell (1) is provided with a bending plate (7), and ceramic resistors (8) are fixed at the top of the bending plate (7) near the two side edges.

7. A fully sealed structural disconnector according to claim 6, characterized in that: A gate (9) is provided between the tops of the two ceramic resistors (8), and copper pillars (4) are fixed on both sides of the sealing shell (1). One end of each of the two copper pillars (4) is connected to both ends of the gate (9).

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