Insulation type grounding switch equipment for electric power

Abstract

The utility model discloses an insulation type grounding switch device for electric power, comprising a rack, the rack is connected with a switch assembly used for electric power insulation, the switch assembly comprises a main shaft which is rotatably connected to the front side of the rack, the upper end of the main shaft is fixedly connected with a plurality of groups of moving tool bits at intervals, the upper end of the rack is provided with a plurality of groups of insulators at intervals, and the upper end of the main shaft is fixedly connected with the moving tool bits. The static tool bit is installed on the upper side of the insulator, the insulator is close to the movable tool bit, the shielding cover is installed on the outer side of the static tool bit, and the side end of the movable tool bit is connected with a grounding wire. The utility model relates to the technical field of grounding switches, in particular to an oil applying piece which is installed on a machine frame and used for lubricating a main shaft. According to the insulated grounding switch equipment for electric power, the oiling piece is arranged in the device, the oil storage box, the pressure block, the sliding rod, the check block, the traction wire, the oil injection pipe and the main shaft are matched with one another, and lubricating oil is added into the lubricating cavity of the rotating end of the main shaft in the opening process of the main shaft, so that the rotating end of the main shaft is protected and lubricated.

Description

Technical Field

[0001] The utility model relates to the technical field of grounding switches, in particular to an insulating grounding switch device for electric power. Background Art

[0002] In the existing power system, the grounding switch with a voltage level of 40.5kV is one of the key equipment to ensure the safe operation of the power grid. However, the traditional grounding switch has certain shortcomings in terms of insulation performance, especially under harsh environmental conditions, such as humidity, high temperature, pollution, etc., its insulation performance may be seriously affected, and even cause electrical failures, which bring safety hazards to the stable operation of the power system. Therefore, it is necessary to make technical improvements to the existing grounding switches, improve their insulation performance, and ensure the safe operation of the power grid; However, the traditional grounding switch has certain shortcomings in terms of insulation performance, especially under harsh environmental conditions, such as humidity, high temperature, pollution, etc., its insulation performance may be seriously affected, and even cause electrical failures, which bring safety hazards to the stable operation of the power system. Therefore, it is necessary to make technical improvements to the existing grounding switches, improve their insulation performance, and ensure the safe operation of the power grid;

[0003] An insulating shielded grounding switch with reference to publication number CN218849350U comprises: a frame, on which a plurality of insulators are arranged at intervals, and above each of the insulators a static blade head of a grounding switch and a movable blade head of a grounding switch are arranged, so that the shielding body is not easily deformed, thereby ensuring the reliability of the insulating shielding. In the existing power system, the grounding switch with a voltage level of 40.5kV is one of the key equipment to ensure the safe operation of the power grid. As described in the above patent, when the existing insulating grounding switch equipment for power is used, its main shaft end will reciprocate due to closing and opening, and lubricating oil needs to be added manually regularly, otherwise it is easy to cause greater wear and tear, affecting the life of the device. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an insulating grounding switch device for electric power, which solves the problem that the device fails to effectively handle the problem that the main shaft is continuously closed and opened, resulting in poor lubrication effect on the rotating end, which affects the life of the device.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an insulating grounding switch device for power use, comprising a frame, the frame is connected with a switch assembly for power insulation, the switch assembly comprises:

[0006] The main shaft is rotatably connected to the front side of the frame, and a plurality of movable cutter heads are fixedly connected to the upper end of the main shaft at intervals. A plurality of insulators are installed at intervals on the upper end of the frame, and a stationary cutter head is installed on the upper side of the insulator corresponding to the movable cutter head. A shielding cover is installed on the insulator near the movable cutter head and outside the stationary cutter head, and a grounding wire is connected to the side end of the movable cutter head;

[0007] An oiling part is installed on the frame for lubricating the main shaft, and the oiling part includes an oil storage box fixedly connected to the frame and with built-in lubricating oil, a pressure block is slidably connected to the upper side of the oil storage box, a sliding rod slidably connected to the oil storage box is installed on the top of the pressure block, a stopper is installed on the top of the sliding rod, a traction line fixedly connected to the main shaft is provided on the front side of the stopper, and an oil filling pipe for lubricating the main shaft is installed at the lower end of the front side of the oil storage box.

[0008] Preferably, a lubrication cavity is provided at the rotating end of the main shaft and the frame, and the oil filling pipe is fixedly connected to the frame and communicated with the lubrication cavity.

[0009] Preferably, a feed port is provided on the rear side of the oil storage box, a cover plug is threadedly connected to the end of the oil storage box near the feed port, and the front side of the traction line is wound around the surface of the main shaft.

[0010] Preferably, the movable cutter head is engaged with the stationary cutter head, the stationary cutter head is connected to an external circuit bus, and the grounding wire is connected to an external grounding busbar.

[0011] Preferably, the frame is formed by welding a bent plate and an angle steel, and the shielding cover is fixedly connected to the insulator by screws.

[0012] Preferably, an array of springs for closing the switch is provided on the front side of the frame corresponding to the movable cutter head, and the upper sides of the springs in the array are all connected to the movable cutter head.

[0013] Beneficial Effects

[0014] The utility model provides an insulating grounding switch device for electric power. Compared with the prior art, it has the following beneficial effects:

[0015] (1) The insulating grounding switch device for electric power has an oiling part arranged in the device, so that the oil storage box, pressure block, slide rod, stopper, traction line, oil filling pipe and main shaft cooperate with each other. During the main shaft opening process, lubricating oil is added to the lubrication cavity of the main shaft rotating end, which plays a role in protecting and lubricating the main shaft rotating end, and the user does not need to add lubricating oil back and forth.

[0016] (2) The insulating grounding switch device for electric power has a shielding cover inside the device, which provides insulation protection for the moving blade head and the stationary blade head. There is no need to add additional insulation protection inside the switch cabinet, which reduces material costs and improves production efficiency. At the same time, the insulation performance of the switch cabinet is improved when the cabinet is assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the utility model;

[0018] Figure 2 It is a side view of the utility model;

[0019] Figure 3 It is a partial side view of the utility model;

[0020] Figure 4 It is a top view of the utility model;

[0021] Figure 5 It is an enlarged side cross-sectional view of the oiling part of the utility model.

[0022] In the figure: 1. frame; 2. main shaft; 3. moving cutter head; 4. insulator; 5. stationary cutter head; 6. shielding cover; 7. oiling part; 71. oil storage box; 72. pressure block; 73. slide rod; 74. stopper; 75. traction line; 76. oil filling pipe; 8. grounding wire. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1-5 The first embodiment shown is an insulating grounding switch device for power use, comprising a frame 1, the frame 1 is connected with a switch assembly for power insulation, the switch assembly comprises: a main shaft 2, which is rotatably connected to the front side of the frame 1, an array of movable cutter heads 3 are fixedly connected to the upper end of the main shaft 2 at intervals, an array of insulators 4 are installed at intervals on the upper end of the frame 1, a static cutter head 5 is installed on the upper side of the insulator 4 corresponding to the end of the movable cutter head 3, a shielding cover 6 is installed on the insulator 4 near the movable cutter head 3 and outside the static cutter head 5, and a grounding wire 8 is connected to the side end of the movable cutter head 3;

[0025] An oiling member 7 is installed on the frame 1 for lubricating the spindle 2. The oiling member 7 includes an oil storage box 71 fixedly connected to the frame 1 and having built-in lubricating oil. A pressure block 72 is slidably connected to the upper side of the oil storage box 71. A slide bar 73 slidably connected to the oil storage box 71 is installed on the top of the pressure block 72. A stopper 74 is installed on the top of the slide bar 73. A traction line 75 fixedly connected to the spindle 2 is provided on the front side of the stopper 74. An oil filling pipe 76 for lubricating the spindle 2 is installed on the lower end of the front side of the oil storage box 71;

[0026] The main shaft 2 and the rotating end of the frame 1 are provided with a lubrication cavity, and the oil filling pipe 76 is fixedly connected to the frame 1 and communicated with the lubrication cavity; a feed port is provided at the rear side of the oil storage box 71, and a cover plug is threadedly connected to the end of the oil storage box 71 near the feed port, and the front side of the traction line 75 is wound around the surface of the main shaft 2, so that the oil storage box 71, the pressure block 72, the slide bar 73, the stopper 74, the traction line 75, the oil filling pipe 76, and the main shaft 2 cooperate with each other. In the process of the main shaft 2 opening, lubricating oil is added to the lubrication cavity of the rotating end of the main shaft 2 to play a lubricating role;

[0027] like Figure 1-4 The second embodiment shown is mainly different from the first embodiment in that:

[0028] The moving blade head 3 is engaged with the static blade head 5, the static blade head 5 is connected to the external circuit bus, and the grounding wire 8 is connected to the external grounding busbar. The frame 1 is welded by a bent plate and an angle steel, and the shielding cover 6 is fixedly connected to the insulator 4 by screws; an array of springs for closing the switch is provided on the front side of the frame 1 corresponding to the moving blade head 3, and the upper side of the array springs is connected to the moving blade head 3; the shielding cover 6 plays an insulating and protective role for the moving blade head 3 and the static blade head 5, and there is no need to add additional insulation protection inside the switch cabinet, which reduces material costs and improves production efficiency. At the same time, it improves the insulation performance of the switch cabinet when the cabinet is equipped.

[0029] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used.

[0030] During use, during the maintenance of the switch cabinet, the main shaft 2 rotates to force the three-phase connected moving blade head 3 and the static blade head 5 to engage, and the grounding switch is closed as a whole, so that the busbar is short-circuited. Since the grounding wire 8 is grounded, it protects the maintenance personnel during maintenance. During the clockwise rotation of the main shaft 2, the traction wire 75 on its surface is unwound, and under the action of gravity, the pressure block 72 in the oil storage box 71 drives the slide bar 73 and the stopper 74 to slide down, and the sliding pressure block 72 presses down the lubricating oil stored in the oil storage box 71, and part of the lubricating oil static oil filling pipe 76 is introduced into the lubrication cavity of the frame 1 and the rotating end of the main shaft 2 for lubrication. During the counterclockwise rotation of the main shaft 2, the traction wire 75 is wrapped around the surface of the main shaft 2, and the traction wire 75 pulls the stopper 74, the slide bar 73, and the pressure block 72 to reset, wherein the shielding cover 6 performs protection and insulation shielding operations on the static blade head 5 and the moving blade head 3.

[0031] 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.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulating grounding switch device for electric power, comprising a frame (1), characterized in that: The frame (1) is connected to a switch assembly for power insulation, and the switch assembly comprises: A main shaft (2) is rotatably connected to the front side of the frame (1); a plurality of movable cutter heads (3) are fixedly connected to the upper end of the main shaft (2) at intervals; a plurality of insulators (4) are installed at intervals on the upper end of the frame (1); a stationary cutter head (5) is installed on the upper side of the insulator (4) corresponding to the end of the movable cutter head (3); a shielding cover (6) is installed on the insulator (4) near the movable cutter head (3) and on the outer side of the stationary cutter head (5); and a grounding wire (8) is connected to the side end of the movable cutter head (3); An oiling member (7) is mounted on the frame (1) and is used for lubricating the main shaft (2). The oiling member (7) comprises an oil storage box (71) fixedly connected to the frame (1) and having built-in lubricating oil. A pressure block (72) is slidably connected to the upper side of the oil storage box (71). A sliding rod (73) slidably connected to the oil storage box (71) is mounted on the top of the pressure block (72). A stopper (74) is mounted on the top of the sliding rod (73). A traction line (75) fixedly connected to the main shaft (2) is disposed on the front side of the stopper (74). An oil filling pipe (76) for lubricating the main shaft (2) is mounted on the lower end of the front side of the oil storage box (71).

2. The insulating grounding switch device for electric power according to claim 1, characterized in that: The main shaft (2) and the rotating end of the frame (1) are provided with a lubrication cavity, and the oil injection pipe (76) is fixedly connected to the frame (1) and communicates with the lubrication cavity.

3. The insulating grounding switch device for electric power according to claim 1, characterized in that: The rear side of the oil storage box (71) is provided with a feed port, and the oil storage box (71) is threadedly connected with a cover plug near the feed port end, and the front side of the traction line (75) is wound around the surface of the main shaft (2).

4. The insulating grounding switch device for electric power according to claim 1, characterized in that: The movable blade head (3) is engaged with the stationary blade head (5), the stationary blade head (5) is connected to an external circuit bus bar, and the grounding wire (8) is connected to an external grounding bus bar.

5. The insulating grounding switch device for electric power according to claim 1, characterized in that: The frame (1) is formed by welding a bent plate and an angle steel, and the shielding cover (6) is fixedly connected to the insulator (4) by means of screws.

6. The insulating grounding switch device for electric power according to claim 1, characterized in that: An array of springs for closing the switch is arranged on the front side of the frame (1) corresponding to the movable cutter head (3), and the upper sides of the springs in the array are all connected to the movable cutter head (3).

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