An isolation insulating insert for a power disconnect terminal

Abstract

The utility model relates to an isolation insulation plug-in, disclose a kind of isolation insulation plug-in suitable for electric power disconnecting terminal, it includes the insulation plug-in body (2) of plug-in in disconnecting terminal row (1), insulation plug-in body (2) includes the plug-in post (201) that can be inserted from top to bottom in terminal assembly (101) side and the disconnecting slider (102) in terminal assembly (101) is positioned, plug-in post (201) is inserted between two metal connecting pieces (106) at terminal assembly (101) side place.The utility model provides a kind of insulation plug-in, it can be positioned in disconnecting slider (102) in terminal assembly (101) so that two connecting pieces in terminal assembly (101) are kept in disconnected state, effectively avoid the power grid safety accident caused by accidental touch, miswiring etc.

Description

Technical Field

[0001] This utility model relates to an isolation and insulation plug, and more particularly to an isolation and insulation plug suitable for power disconnection terminals. Background Technology

[0002] In substation renovation and expansion projects, workers need to work at secondary cabinets or terminal boxes. Generally, the terminal blocks inside are in normal operating condition. Due to the small working space of the secondary cabinets or terminal boxes, the two connecting pieces on the side of the same terminal assembly are in a live operating state. Therefore, there is a risk of power grid safety accidents caused by accidental contact or incorrect wiring. In particular, disconnecting terminals involving current circuits can also lead to power grid tripping and load shedding. Therefore, it is necessary to develop a device that can prevent accidental contact and incorrect wiring of disconnecting terminal blocks. Utility Model Content

[0003] This invention addresses the problems of accidental contact and incorrect wiring in existing disconnection terminals by providing an isolation and insulation plug suitable for power disconnection terminals.

[0004] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method: An insulating plug for power disconnection terminals includes an insulating plug body that is inserted into a disconnection terminal block. The insulating plug body includes a plug post that can be inserted from top to bottom into the side of the terminal assembly and limits the disconnection slider in the terminal assembly. The plug post is inserted between two metal connecting pieces on the side of the terminal assembly.

[0005] Preferably, the insulating plug body includes an upper cover plate, and the upper end of the plug post is connected to the lower surface of the upper cover plate. When the plug post is in the plug-in state, the upper cover plate covers the mounting groove of the connecting piece between adjacent terminal assemblies.

[0006] Preferably, there is one plug-in post, and when the plug-in post is in the plugged-in state, the upper cover plate closes onto the single connecting piece mounting slot. The cooperation between the upper cover plate and the plug-in post allows for the disconnection of two connecting pieces on the same terminal assembly, and also shields the connecting piece mounting slots between adjacent terminal assemblies, effectively preventing accidental contact or incorrect wiring.

[0007] Preferably, there are multiple plug-in posts arranged side-by-side on the upper cover plate, each corresponding to a terminal assembly. These multiple plug-in posts can be inserted into the sides of adjacent terminal assemblies. When the multiple plug-in posts are in the inserted state, the upper cover plate can close over the terminal assemblies corresponding to the plug-in posts. The arrangement of multiple plug-in posts improves both the isolation and protection efficiency of the terminal block and the installation stability of the insulating plugs on the terminal block.

[0008] Preferably, the plug-in post includes a first post, a second post, and a third post from top to bottom. The transverse cross-sections of the first post, the second post, and the third post are all rectangular. The left and right sides of the first post and the second post are on the same plane. The front and rear end faces of the first post and the second post are connected by a circular arc surface. The front and rear ends of the second and third columns are on the same horizontal plane. The third column is located in the middle of the second column, and its side surface forms an L-shaped groove with the lower surface of the second column. The lower end surface of the third column is an arc surface. The structural design of the plug-in column allows it to be better inserted into the groove of the disconnecting slider and is well-suited for different types of disconnecting terminals.

[0009] Preferably, a handle is provided on the upper surface of the top cover. The handle facilitates the installation and removal of the top cover from the terminals.

[0010] This utility model, by adopting the above technical solution, has significant technical effects: This utility model provides an insulating plug that can limit the disconnecting slider in the terminal assembly to keep the two connecting pieces in the terminal assembly in a disconnected state, effectively avoiding power grid safety accidents caused by accidental contact or incorrect wiring. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0012] Figure 2 yes Figure 1 A diagram illustrating the usage status.

[0013] Figure 3 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0014] Figure 4 yes Figure 2 Side view.

[0015] Figure 5 yes Figure 2 A diagram illustrating the usage status.

[0016] Figure 6 yes Figure 5 A schematic diagram of the internal structure. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Example 1 This embodiment provides an isolation and insulation plug suitable for power disconnection terminals, such as... Figure 1 , Figure 2As shown, the insulating plug-in body 2 is inserted into the disconnect terminal block 1. In this embodiment, the insulating plug-in body 2 is an integrally molded insulating component, made of materials such as plastic or nylon. The integral molding method makes its structure simple, does not require assembly, and does not have any unnecessary non-insulating parts, which can fully ensure the overall structural stability and insulation stability of the insulating plug-in.

[0019] The insulating plug body 2 includes a plug post 201 that can be inserted from top to bottom into the side of the terminal assembly 101 and limit the disconnecting slider 102 in the terminal assembly 101. The plug post 201 is inserted between two metal connecting pieces 106 on the side of the terminal assembly 101. The plug post 201 can limit the disconnecting slider 102 to a non-conductive position and prevent it from moving between the two metal connecting pieces 106, thereby preventing the two metal connecting pieces 106 from conducting and thus disconnecting the two connecting pieces in the same terminal assembly 101, avoiding safety accidents caused by accidental contact or miswiring.

[0020] The disconnecting terminal block 11 in this embodiment includes a test terminal block, a voltage terminal block, and a current terminal block, which is composed of multiple terminal assemblies 101. Each terminal assembly 101 includes an insulating sheet and a conductive metal connecting piece 106. The insulating sheets of adjacent terminal assemblies 101 form a connecting piece mounting groove 107 for mounting the metal connecting piece 106. The conductive metal connecting piece 106 includes two metal connecting pieces 106 and a disconnecting slider 102 for making the two metal connecting pieces 106 conductive. The disconnecting slider 102 can slide on one of the metal connecting pieces 106. When the disconnecting slider 102 is on one of the metal connecting pieces 106, it is in a non-conductive position, and the two connecting pieces are not connected. When the disconnecting slider 102 slides between the two metal connecting pieces 106, it is in a conductive position, and the two connecting pieces are connected under the action of the disconnecting slider 102.

[0021] The metal connecting piece 106 is also provided with a screw 108 for fastening the wire. The metal connecting piece 106 is provided with a post 109 for connecting to a test instrument or a test current. The post 109 is provided with a test socket 103 for connecting the wire. In addition, the height of the insulating sheet is higher than the upper end face of the screw 108. The part of the connecting piece mounting groove 107 for mounting the screw 108 constitutes a screw bridging mounting groove 104. The screw 108 is located on the bottom surface of the screw bridging mounting groove 104. The part of the screw bridging mounting groove 104 at the upper end of the screw 108 constitutes a plug groove located between adjacent insulating sheets for fixing the insulating plug body.

[0022] The insulating plug in this embodiment is compatible with commonly used international standard breaking test terminals in the industry, with two test pins 109 for 4 mm test plugs, or for bridging rods or screws 108. Wiring method: screw 108 connection; models such as URTK / S, TB 6-RTK, UT 6-T-HV P / P, URTK / SRD and URTK / S GN manufactured by Phoenix Contact are all compatible.

[0023] In this embodiment, the insulating plug body 2 includes an upper cover plate 202, on which a plug post 201 is connected. The upper end of the plug post 201 is connected to the lower surface of the upper cover plate 202. When the plug post 201 is in the plugged-in state, the upper cover plate 202 covers the connecting piece mounting groove 107 between adjacent terminal assemblies 101. When the plug post 201 is in the plugged-in state, the upper cover plate 202 covers a single connecting piece mounting groove 107. In addition, a handle 206 is provided on the upper surface of the upper cover plate 202, which facilitates the installation and removal of the upper cover plate 202 on the terminals.

[0024] In addition to the plug-in post 201 breaking the connection between two conductive connecting pieces in the same terminal assembly 101, the upper cover plate 202 can also cover the connecting piece mounting groove 107 to shield the conductive metal connecting piece 106 in the connecting piece mounting groove 107, thereby achieving insulation shielding of the upper end face of the disconnected terminal block 11, further avoiding power grid safety accidents caused by accidental contact or miswiring.

[0025] In this embodiment, the plug-in post 201 includes a first post 203, a second post 204, and a third post 205 from top to bottom. The transverse cross-sections of the first post 203, the second post 204, and the third post 205 are all rectangular. The left and right sides of the first post 203 and the second post 204 are on the same plane. The front and rear end faces of the first post 203 and the second post 204 are connected by a circular arc surface. The front and rear ends of the second column 204 and the third column 205 are on the same horizontal plane. The third column 205 is located at the middle position of the second column 204, and the side of the third column 205 and the lower surface of the second column 204 form an L-shaped groove. The lower end surface of the third column 205 is an arc surface.

[0026] The plug post 201 has a rectangular cross-section, and its front and rear sides are complete planes, which allows it to better connect the connecting piece and the insulating piece. Its left and right sides are complete planes, which allows it to better act on the end face of the breaking slider 102, ensuring that it can better limit the breaking slider 102.

[0027] The width of the second column 204 is smaller than the width of the first column 203, and the second column 204 can cooperate with the slide groove 110 on the connecting piece for the sliding of the breaking slider 102, that is, the second column 204 can be inserted into the slide groove 110 on the connecting piece for the sliding of the breaking slider 102.

[0028] In addition, its bottom is designed with a smaller third column 205, which allows it to be better inserted into the groove 110 where different types of disconnecting sliders 102 are located, and thus it is suitable for different types of disconnecting terminals.

[0029] Example 2 Same as in Example 1, such as Figures 3-6 As shown, the difference is that in this embodiment there are multiple plug-in pins 201. The multiple plug-in pins 201 are arranged side by side on the upper cover plate 202 and correspond one-to-one with the terminal assembly 101. The multiple plug-in pins 201 can be plugged into the side of the adjacent terminal assembly 101 respectively. When the multiple plug-in pins 201 are plugged in, the upper cover plate 202 can cover the multiple terminal assemblies 101 corresponding to the plug-in pins 201.

[0030] The widened design of the top cover plate 202 allows it to cover the mounting slots 107 of the connecting pieces on multiple terminal assemblies 101. The design of multiple plug posts 201 enables the insulating plug to disconnect the metal connecting pieces 106 in multiple terminal assemblies 101 at the same time, effectively improving the isolation efficiency of the insulating plug to the terminal block. At the same time, the design of multiple plug posts 201 also makes the insulating plug more stable to be installed on the terminal block.

[0031] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0032] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. An insulating plug-in suitable for power disconnection terminals, comprising an insulating plug-in body (2) inserted into a disconnection terminal block (1), characterized in that: The insulating plug body (2) includes a plug post (201) that can be inserted from top to bottom into the side of the terminal assembly (101) and limits the disconnect slider (102) in the terminal assembly (101). The plug post (201) is inserted between two metal connecting pieces (106) on the side of the terminal assembly (101).

2. The isolation and insulation plug-in for power disconnect terminals according to claim 1, characterized in that: The insulating plug body (2) includes an upper cover plate (202), the upper end of the plug post (201) is connected to the lower surface of the upper cover plate (202), and when the plug post (201) is plugged in, the upper cover plate (202) covers the connecting piece mounting groove (107) between adjacent terminal assemblies (101).

3. The isolation and insulation plug-in for power disconnect terminals according to claim 2, characterized in that: There is one plug-in post (201). When the plug-in post (201) is plugged in, the upper cover plate (202) covers the single connecting piece mounting slot (107).

4. The isolation and insulation plug-in for power disconnect terminals according to claim 2, characterized in that: There are multiple plug-in pins (201), which are arranged side by side on the upper cover plate (202) and correspond one-to-one with the terminal assembly (101). The multiple plug-in pins (201) can be plugged into the side of the adjacent terminal assembly (101). When the multiple plug-in pins (201) are plugged in, the upper cover plate (202) can cover the multiple terminal assemblies (101) corresponding to the plug-in pins (201).

5. An isolation and insulation plug-in for power disconnect terminals according to claim 1, characterized in that: The plug-in post (201) includes a first post (203), a second post (204), and a third post (205) from top to bottom. The transverse cross-sections of the first post (203), the second post (204), and the third post (205) are all rectangular. The left and right sides of the first post (203) and the second post (204) are on the same plane. The front and rear end faces of the first post (203) and the second post (204) are connected by a circular arc surface. The front and rear ends of the second column (204) and the third column (205) are on the same horizontal plane. The third column (205) is located in the middle of the second column (204), and the side of the third column (205) and the lower surface of the second column (204) form an L-shaped groove. The lower end surface of the third column (205) is an arc surface.

6. An isolation and insulation plug-in for power disconnect terminals according to claim 2, characterized in that: A handle (206) is provided on the upper surface of the cover plate (202).

Images