Drawer type grounding device

Abstract

The utility model provides a drawer type grounding device, which is applied to a feeder cabinet and comprises a drawer body which is installed in a cabinet body in a drawing and pushing manner; the three-phase copper bar is located on one side, in the length direction, of the drawer body, and the three-phase copper bar has a first state in which the three-phase copper bar is connected with the bus end in an inserted mode and a second state in which the three-phase copper bar is separated from the bus end along with pulling and pushing movement of the drawer body; the grounding terminal is electrically connected in the drawer body and is arranged far away from the three-phase copper bar; the three-phase short circuit type grounding wire is fixed inside the drawer body and comprises a three-phase connecting end and a grounding connecting end, the three-phase connecting end is electrically connected with the three-phase copper bar, and the grounding connecting end is electrically connected with the grounding terminal; the contact pins are connected to the side, close to the three-phase copper bars, of the drawer body, the contact pins in the first state are connected with the socket ends in an inserted mode, and the contact pins in the second state are separated from the socket ends. The drawer type grounding device is simple in structure, convenient to manufacture, high in grounding operation stability and good in safety.

Description

Technical Field

[0001] This application relates to the field of power maintenance technology, and in particular to a drawer-type grounding device. Background Technology

[0002] Pumped storage hydroelectric power utilizes electricity generated during periods of low electricity demand to pump water into an upper reservoir. During periods of high electricity demand, the water stored in the upper reservoir is released into a lower reservoir to generate electricity. It is also known as energy storage power generation. It can convert excess electricity during periods of low grid load into high-value electricity during periods of high grid load. It is suitable for frequency and phase regulation, can be used to stabilize the frequency and voltage of the power system, is suitable for emergency backup, and can also improve the efficiency of thermal power plants and nuclear power plants in the power system.

[0003] Due to the operational needs of pumped storage power station production sites, their feeder cabinets require at least one power outage maintenance per year. Before maintenance, the feeder cabinets need to be switched from operation to maintenance. This typically involves suspending a three-phase short-circuit grounding wire on the feeder side of the cabinet for grounding to ensure on-site safety. However, because feeder cabinet sites are usually narrow and enclosed, suspending the three-phase short-circuit grounding wire is extremely inconvenient, and it is prone to falling off or being incorrectly attached. Furthermore, the grounding end of the three-phase short-circuit grounding wire is usually located on the incoming line side at the bottom of the feeder cabinet, posing a significant risk of accidental contact with live parts during operation. Therefore, a safer and more reliable grounding device for feeder cabinets is urgently needed. Utility Model Content

[0004] In view of this, the purpose of this application is to propose a drawer-type grounding device to solve the related problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides a drawer-type grounding device applied to a feeder cabinet. The feeder cabinet has a cabinet grounding configuration. The cabinet contains a busbar terminal for the feeder and a socket terminal electrically connected to the cabinet. The drawer-type grounding device includes: a drawer body, which can be pulled out and installed inside the cabinet; a three-phase copper busbar located on one side of the drawer body along its length, which, as the drawer body moves, has a first state of being plugged into the busbar terminal and a second state of being disconnected from the busbar terminal; and a grounding terminal electrically connected to the drawer. Inside the body, a three-phase short-circuit grounding wire is disposed away from the three-phase copper busbar; a three-phase short-circuit grounding wire is fixed inside the drawer body, including a three-phase connection terminal and a grounding connection terminal, the three-phase connection terminal being electrically connected to the three-phase copper busbar, and the grounding connection terminal being electrically connected to the grounding terminal; a pin is connected to the side of the drawer body near the three-phase copper busbar, the pin being in the first state being inserted into the socket end, and the pin being in the second state being separated from the socket end; wherein, the drawer body, the cabinet body, the pin, and the socket end are all made of metal.

[0006] Furthermore, there are two pins, spaced apart along the width of the drawer body.

[0007] Furthermore, the bottom of the drawer body is provided with an insert extending along the length direction, and the cabinet body is provided with a slot that mates with the insert.

[0008] Furthermore, the grounding terminal is detachably connected to the drawer body.

[0009] Furthermore, the inner wall of the cabinet is fitted with limit markings.

[0010] Furthermore, the drawer body is provided with an adapter plate on the side away from the three-phase copper busbar, and a push-pull rod is provided on the adapter plate.

[0011] Furthermore, the adapter plate is located on the bottom surface of the drawer body and is rotatably connected to the drawer body; the adapter plate is provided with an arc-shaped groove, and the cabinet body is provided with a limiting post that slides with the arc-shaped groove.

[0012] Furthermore, the drawer body is provided with a spring snap, and the adapter plate is provided with a limiting hole that cooperates with the spring snap.

[0013] Furthermore, the spring clip is located on the top surface of the drawer body, and the drawer body is provided with a through hole corresponding to the spring clip.

[0014] Furthermore, there are multiple limiting holes, distributed around the rotational connection between the adapter plate and the drawer body.

[0015] As can be seen from the above description, the drawer-type grounding device provided in this application is applied to a feeder cabinet. The feeder cabinet has a cabinet grounding setting, and the cabinet is equipped with a busbar end of the feeder and a socket end electrically connected to the cabinet. The drawer-type grounding device includes: a drawer body, which can be pulled out and installed in the cabinet; a three-phase copper busbar, located on one side of the drawer body along its length. As the drawer body is pulled out and moved, the three-phase copper busbar has a first state of being plugged into the busbar end and a second state of being separated from the busbar end; a grounding terminal, electrically connected in the drawer body and located away from the three-phase copper busbar; a three-phase short-circuit grounding wire, fixed inside the drawer body, including a three-phase connection end and a grounding connection end. The three-phase connection end is electrically connected to the three-phase copper busbar, and the grounding connection end is electrically connected to the grounding terminal; and a pin, connected to the side of the drawer body near the three-phase copper busbar. The pin in the first state is plugged into the socket end, and the pin in the second state is separated from the socket end. The drawer body, cabinet body, pin, and socket end are all made of metal. This application incorporates a three-phase short-circuit grounding wire within the drawer body. One end of the three-phase connection connects to a three-phase copper busbar, which is then plugged into the busbar terminal. The other end connects to a grounding terminal, which in turn connects to the drawer body. The drawer body is connected to a pin, which is then plugged into a socket. This allows grounding of the busbar terminal by sliding the drawer body. The operation is simple and convenient, the connection stability is stronger, and safety is improved, avoiding human error or accidental contact with live equipment. This drawer-type grounding device has a simple structure, is easy to manufacture, and offers strong stability and safety during grounding operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a front rear view structural diagram of a drawer-type grounding device according to an embodiment of this application;

[0018] Figure 2 for Figure 1 A frontal view of the middle drawer-type grounding device;

[0019] Figure 3 for Figure 1 Schematic diagram of the rear structure of the middle drawer-type grounding device;

[0020] Figure 4 This is a front view of the rear structure of one of the feeder cabinets.

[0021] Figure 5 for Figure 4Front view structural diagram of the central cabinet;

[0022] Figure 6 This is a cross-sectional schematic diagram showing the cooperation between the cabinet and the drawer-type grounding device.

[0023] Attached reference numerals: 1. Cabinet body; 1-1. Busbar end; 1-2. Socket end; 1-3. Slot; 1-4. Limit mark; 1-5. Limit post; 2. Drawer body; 2-1. Insert plate; 2-2. Through hole; 3. Three-phase copper busbar; 4. Grounding terminal; 5. Three-phase short-circuit grounding wire; 5-1. Three-phase connection end; 5-2. Grounding connection end; 6. Pin; 7. Adapter plate; 7-1. Push-pull rod; 7-2. Arc groove; 7-3. Limit hole; 8. Spring buckle. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that the element or object preceding the term covers the element or object listed following the term and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] The following describes specific embodiments in conjunction with... Figures 1 to 6 The technical solution of this application will be further described in detail.

[0027] Some embodiments of this application provide a drawer-type grounding device applied to a feeder cabinet. The cabinet 1 of the feeder cabinet is grounded. The cabinet 1 contains a busbar terminal 1-1 of the feeder and a socket terminal 1-2 electrically connected to the cabinet 1. The drawer-type grounding device includes: a drawer body 2, which can be pulled out and installed inside the cabinet 1; a three-phase copper busbar 3, located on one side of the drawer body 2 along its length. As the drawer body 2 is pulled out and moved, the three-phase copper busbar 3 has a first state of being plugged into the busbar terminal 1-1 and a second state of being separated from the busbar terminal 1-1; and a grounding terminal 4, electrically connected inside the drawer body 2. A three-phase copper busbar 3 is disposed away from the drawer body 2; a three-phase short-circuit grounding wire 5 is fixed inside the drawer body 2, including a three-phase connection terminal 5-1 and a grounding connection terminal 5-2, wherein the three-phase connection terminal 5-1 is electrically connected to the three-phase copper busbar 3, and the grounding connection terminal 5-2 is electrically connected to the grounding terminal 4; a pin 6 is connected to the side of the drawer body 2 near the three-phase copper busbar 3, wherein the pin 6 in the first state is inserted into the socket end 1-2, and the pin 6 in the second state is separated from the socket end 1-2; wherein the drawer body 2, the cabinet body 1, the pin 6 and the socket end 1-2 are all made of metal.

[0028] A feeder cabinet typically consists of multiple cabinets (1), each a metal enclosure that conducts electricity and is self-grounded. Some cabinets (1) can house 400V feeders. The feeder includes outgoing terminals, incoming switches, and incoming copper busbars, etc. Figure 4 and Figure 5 As shown, the empty cabinet 1 can be used to accommodate the drawer. The cabinet 1 can be equipped with a busbar end 1-1 for connecting the feeder and a socket end 1-2 for connecting the cabinet 1, which facilitates subsequent connection with the three-phase short-circuit grounding wire 5 in the drawer. The busbar end 1-1 is, for example, a three-phase interface, and the socket end 1-2 is, for example, a metal connecting piece with a socket.

[0029] like Figures 1 to 3 As shown, the drawer body 2 has a semi-open structure and fits into the receiving cavity of the cabinet body 1. In the figure, the L direction is the length direction of the drawer body 2, and the W direction is the width direction of the drawer body 2.

[0030] A three-phase copper busbar 3 is provided on the side of the drawer body 2 near the busbar end 1-1. As the drawer body 2 is pushed out and moved, the three-phase copper busbar 3 has a first state of being plugged into the busbar end 1-1 and a second state of being separated from the busbar end 1-1. That is, when the drawer body 2 is pushed to a certain position, the three-phase copper busbar 3 can be plugged into the busbar end 1-1 for electrical connection. When the drawer body 2 is pulled out to a certain position, the three-phase copper busbar 3 is separated from the busbar end 1-1 and the electrical connection is broken.

[0031] The drawer body 2 is connected to a grounding terminal 4, which is, for example, a bolt, and is located away from the bus end 1-1.

[0032] Inside the drawer body 2, a three-phase short-circuit grounding wire 5 is also fixed. It can be secured using adhesive, clips, or other methods. The working principle of the three-phase short-circuit grounding wire 5 is to connect the three phases of the equipment under maintenance to the ground, creating equipotential and preventing the risk of sudden power surges. The three-phase short-circuit grounding wire 5 includes a three-phase connection terminal 5-1 and a grounding connection terminal 5-2, with a conductor (e.g., 25mm²) connected in between. 2 The cable has its three-phase connection terminal 5-1 electrically connected to the three-phase copper busbar 3, and its grounding connection terminal 5-2 electrically connected to the grounding terminal 4.

[0033] A pin 6, for example a metal pin, is electrically connected to the side of the drawer body 2 near the busbar end 1-1. In the first state, the pin 6 is inserted into the socket end 1-2. In the second state, the pin 6 is separated from the socket end 1-2. That is, when the drawer body 2 is pushed to a certain position, the pin 6 can be inserted into the socket end 1-2 for electrical connection. When the drawer body 2 is pulled out to a certain position, the pin 6 is separated from the socket end 1-2, and the electrical connection is broken.

[0034] like Figure 6 As shown, this application sets the three-phase short-circuit grounding wire 5 inside the drawer body 2. One end of the three-phase connection terminal 5-1 is connected to the three-phase copper busbar 3, which is then plugged into the busbar end 1-1. The other end of the grounding connection terminal 5-2 is connected to the grounding terminal 4, which is connected to the drawer body 2. The drawer body 2 is connected to the pin 6, which is then plugged into the socket end 1-2. Thus, the grounding of the busbar end 1-1 is achieved by pulling and pushing the drawer body 2. The operation is simple and convenient, the connection stability of the plug-in cooperation is stronger, the safety is good, and it avoids human error, accidental contact with live equipment, etc.

[0035] This drawer-type grounding device has a simple structure, is easy to manufacture, and offers strong stability and safety during grounding operation. It overcomes the cumbersome and inconvenient operation of traditionally hanging ground wires on feeder cabinets, eliminates the risk of accidental contact with live equipment during operation, and simplifies manufacturing by converting the original feeder cabinet into a drawer-type grounding device, significantly reducing production costs.

[0036] In some embodiments, there are two pins 6, which are spaced apart along the width direction of the drawer body 2.

[0037] like Figure 1 As shown, two pins 6 are spaced apart along the width of the drawer body 2, correspondingly, as... Figure 4 As shown, two sockets 1-2 are spaced apart along the width of the cabinet 1 to ensure that the pin 6 can be stably connected to the sockets 1-2 and to ensure the stability of the grounding effect.

[0038] In some embodiments, the bottom of the drawer body 2 is provided with an insert 2-1 extending along the length direction, and the cabinet body 1 is provided with a slot 1-3 that mates with the insert 2-1.

[0039] like Figure 3 As shown, the bottom of the drawer body 2 is provided with a insert 2-1 extending along the length direction, correspondingly, as... Figure 5 As shown, the cabinet 1 has a slot 1-3 extending along the length direction. The slot 1-3 and the insert 2-1 cooperate to restrict the sliding direction of the drawer body 2 and realize the sliding connection.

[0040] In some embodiments, the grounding terminal 4 is detachably connected to the drawer body 2, for example by a threaded connection, to facilitate tightening of the grounding connection end 5-2 and ensure grounding effect.

[0041] In some embodiments, limit markers 1-4 are affixed to the inner wall of the cabinet 1.

[0042] like Figure 5 As shown, limit markers 1-4 are attached to the inner wall of cabinet 1. Limit markers 1-4 include, for example, marking the position of the first state and the position of the second state, to remind the user whether the grounding operation is in place, etc.

[0043] In some embodiments, the drawer body 2 is provided with a transition plate 7 on the side away from the three-phase copper busbar 3, and a push-pull rod 7-1 is provided on the transition plate.

[0044] like Figure 2 As shown, a transition plate 7 is provided on the side of the drawer body 2 away from the three-phase copper busbar 3. The transition plate 7 can be an insulating plate. A push-pull rod 7-1 is provided on the transition plate 7 to facilitate the person to pull out and push the drawer body 2.

[0045] In some embodiments, the adapter plate 7 is located on the bottom surface of the drawer body 2 and is rotatably connected to the drawer body 2; the adapter plate 7 is provided with an arc-shaped groove 7-2, and the cabinet body 1 is provided with a limiting post 1-5 that slides with the arc-shaped groove 7-2.

[0046] like Figure 3 As shown, the adapter plate 7 is located on the bottom surface of the drawer body 2 and is rotatably connected to the drawer body 2, for example, via a pivot. The adapter plate 7 is provided with an arc-shaped groove 7-2, such as... Figure 5 As shown, the cabinet 1 is equipped with a fixed limiting post 1-5. The limiting post 1-5 can slide in the arc groove 7-2 to change the distance between the limiting post 1-5 and the aforementioned rotating shaft, thereby changing the position of the drawer body 2. By setting the arc groove 7-2, the movement distance of the drawer body 2 can be limited to a certain extent.

[0047] In some embodiments, the drawer body 2 is provided with a spring snap 8, and the adapter plate 7 is provided with a limiting hole 7-3 that cooperates with the spring snap 8.

[0048] like Figure 2 As shown, the drawer body 2 is equipped with a spring latch 8, such as Figure 3 As shown, the adapter plate 7 has a limiting hole 7-3 that mates with the spring snap 8. The elastic part of the spring snap 8 can extend into the limiting hole 7-3, which restricts the rotation of the adapter plate 7, thereby limiting the distance between the limiting post 1-5 and the aforementioned rotating shaft, thus fixing the drawer body 2. When the elastic part of the spring snap 8 retracts from the limiting hole 7-3, the adapter plate 7 can rotate, thus changing the position of the drawer body 2.

[0049] In some embodiments, the spring clip 8 is located on the top surface of the drawer body 2, and the drawer body 2 is provided with a through hole 2-2 corresponding to the spring clip 8.

[0050] like Figure 1 As shown, the spring clip 8 is located on the top surface of the drawer body 2. The drawer body 2 has a through hole 2-2 corresponding to the spring clip 8, so that the spring clip 8 is located inside the drawer body 2, which serves a protective function. The elastic part of the spring clip 8 can pass through the through hole 2-2 and cooperate with the limiting hole 7-3. Under normal conditions, the elastic part of the spring clip 8 can be set to stay out of the through hole 2-2. A handle can be set on the spring clip 8. Lifting the handle can make the elastic part of the spring clip 8 leave the through hole 2-2 and separate from the limiting hole 7-3.

[0051] In some embodiments, there are multiple limiting holes 7-3, distributed around the rotatable connection between the adapter plate 7 and the drawer body 2.

[0052] like Figure 3 As shown, there are three limiting holes 7-3, distributed around the pivot. As the adapter plate 7 rotates, the spring buckle 8 can engage with different limiting holes 7-3 so that the drawer body 2 can be fixed in different positions.

[0053] Specifically, three marks can be set on the limit indicators 1-4, corresponding one-to-one with the three limit holes 7-3. The first mark is the isolation position, in which the first limit hole 7-3 engages with the spring clip 8, the three-phase copper busbar 3 is separated from the busbar end 1-1, and the pin 6 is also separated from the socket end 1-2. The second mark is the test position, in which the second limit hole 7-3 engages with the spring clip 8, the three-phase copper busbar 3 is separated from the busbar end 1-1, but the pin 6 is plugged into the socket end 1-2. The third position is the working position, in which the third limit hole 7-3 engages with the spring clip 8, the three-phase copper busbar 3 is plugged into the busbar end 1-1, and the pin 6 is plugged into the socket end 1-2.

[0054] During maintenance, first lift spring clip 8, then push the push-pull rod 7-1 from the isolation position to the test position and then to the working position to achieve feeder grounding. To restore the equipment, first lift spring clip 8, then pull the push rod from the working position to the test position and then to the isolation position. These three position markings prevent accidental operation during manual installation and removal of the grounding wire, thus improving safety.

[0055] The various embodiments in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0056] The description in this application is given for illustrative purposes and is not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of this application and to enable those skilled in the art to understand this application and design various embodiments with various modifications suitable for a particular purpose.

[0057] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0058] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description.

[0059] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A drawer-type grounding device, characterized in that, Applied to feeder cabinets, the feeder cabinets are grounded, and the cabinets contain a busbar terminal for the feeder and a socket terminal electrically connected to the cabinets. The drawer-type grounding device includes: The drawer body can be pulled out and installed inside the cabinet; The three-phase copper busbar is located on one side of the drawer body along its length. As the drawer body moves in and out, the three-phase copper busbar has a first state of being plugged into the busbar end and a second state of being separated from the busbar end. The grounding terminal is electrically connected inside the drawer body and is located away from the three-phase copper busbar. A three-phase short-circuit grounding wire is fixed inside the drawer body and includes a three-phase connection terminal and a grounding connection terminal. The three-phase connection terminal is electrically connected to the three-phase copper busbar, and the grounding connection terminal is electrically connected to the grounding terminal. A pin is connected to the side of the drawer body near the three-phase copper busbar. When the pin is in the first state, it is inserted into the socket end. When the pin is in the second state, it is separated from the socket end. The drawer body, the cabinet body, the pin, and the socket end are all made of metal.

2. The drawer-type grounding device according to claim 1, characterized in that, There are two pins, which are spaced apart along the width of the drawer body.

3. The drawer-type grounding device according to claim 1, characterized in that, The bottom of the drawer body is provided with a insert extending along the length direction, and the cabinet body is provided with a slot that mates with the insert.

4. The drawer-type grounding device according to claim 1, characterized in that, The grounding terminal is detachably connected to the drawer body.

5. The drawer-type grounding device according to claim 1, characterized in that, Limit markings are affixed to the inner wall of the cabinet.

6. The drawer-type grounding device according to claim 1, characterized in that, The drawer body is provided with an adapter plate on the side away from the three-phase copper busbar, and a push-pull rod is provided on the adapter plate.

7. The drawer-type grounding device according to claim 6, characterized in that, The adapter plate is located on the bottom surface of the drawer body and is rotatably connected to the drawer body; the adapter plate is provided with an arc-shaped groove, and the cabinet body is provided with a limiting post that slides with the arc-shaped groove.

8. The drawer-type grounding device according to claim 7, characterized in that, The drawer body is provided with a spring snap, and the adapter plate is provided with a limiting hole that cooperates with the spring snap.

9. The drawer-type grounding device according to claim 8, characterized in that, The spring clip is located on the top surface of the drawer body, and the drawer body has a through hole corresponding to the spring clip.

10. The drawer-type grounding device according to claim 9, characterized in that, The limiting holes are multiple and are distributed around the rotatable connection between the adapter plate and the drawer body.

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