A transformer neutral point grounding protection device

Abstract

This utility model relates to the field of transformer grounding protection technology, and solves the problem that during the installation of protection devices, bolts are often used for positioning and installation. However, after long-term use, bolts are prone to rust or reduced hardness, causing inconvenience during disassembly. Specifically, it is a transformer neutral point grounding protection device, including a mounting base. Several positioning blocks are fixedly installed inside the mounting base. Isolation rods are fixedly installed on the surface of the positioning blocks. A surge arrester is installed on the side adjacent to the isolation rod, and a disconnecting switch is installed on the side adjacent to the surge arrester. A current transformer is fixedly installed on one side of the mounting base surface. A grounding plate is installed on one side of the isolation rod surface. Positioning components are provided on both sides of the bottom of the mounting base. The positioning components include positioning grooves opened on both sides of the mounting base surface. A limiting plate is fixedly connected inside the positioning groove by a positioning bolt. A threaded groove is opened in the middle of the surface of the limiting plate.

Description

Technical Field

[0001] This utility model relates to the field of transformer grounding protection technology, specifically a transformer neutral point grounding protection device. Background Technology

[0002] A transformer neutral point grounding protection device disclosed in authorization announcement number CN218071002U includes a mounting base, a disconnecting switch, a surge arrester, a supporting insulator, a current transformer, and a protective box. The protective box has a magnetic connection mechanism on its side. One end of the magnetic connection mechanism is fixedly connected to one end of a first connecting plate via a screw sleeve. The other end of the first connecting plate is fixedly connected to the surge arrester, which is connected to the disconnecting switch. The other end of the magnetic connection mechanism is fixedly connected to one end of a second connecting plate via a screw sleeve. The other end of the second connecting plate is fixedly connected to the top of the supporting insulator. A tightening mechanism is fixed to the top of the supporting insulator, and the tightening mechanism engages with a conductive rod. The conductive rod is positioned opposite to the lead rod of the current transformer.

[0003] The transformer neutral point grounding protection device adopting the above structure is easy to install and maintain, and the gap adjustment is convenient and quick.

[0004] However, during the use of protective devices, bolts are often used for positioning and installation. But after a long period of use, bolts are prone to rust or loss of hardness during disassembly, making this method inconvenient for the installation and disassembly of protective devices. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a transformer neutral point grounding protection device, which solves the problem of high-temperature furnace tubes cracking after sudden cooling due to excessively rapid local temperature drop caused by cold water directly contacting the furnace sidewall.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a transformer neutral point grounding protection device, including a mounting base, a plurality of positioning blocks are fixedly installed inside the mounting base, an isolation rod is fixedly installed on the surface of the positioning blocks, a surge arrester is provided on the side adjacent to the isolation rod, a disconnecting switch is provided on the side adjacent to the surge arrester, a current transformer is fixedly installed on one side of the surface of the mounting base, a grounding plate is provided on one side of the surface of the isolation rod, and positioning components are provided on both sides of the bottom of the mounting base;

[0007] The positioning component includes positioning grooves on both sides of the mounting base surface. A limiting plate is fixedly connected inside the positioning groove by a positioning bolt. A threaded groove is provided in the middle of the surface of the limiting plate. A threaded rod is threadedly connected inside the threaded groove. One end of the threaded rod is rotatably connected to a clamping plate.

[0008] In one specific embodiment, the surface of the clamping plate is provided with an embedding groove, and the interior of the embedding groove is provided with an anti-slip rubber pad to improve stability.

[0009] In one specific embodiment, mounting grooves are provided on both sides of the surface of the limiting plate, and the size of the mounting grooves is adapted to the size of the positioning bolts.

[0010] In one specific embodiment, a support base is fixedly installed at the bottom of the current transformer, and one side of the surface of the support base is fixedly installed at one end of the mounting base.

[0011] In one specific embodiment, one end of the grounding plate is inserted into the ground, and the surface of the grounding plate is coated with an anti-corrosion agent to improve its service life.

[0012] In one specific embodiment, both the isolation rod and the surge arrester have limit grooves on their tops, and the surface of the limit grooves is provided with guide plates.

[0013] Compared with the prior art, this utility model provides a transformer neutral point grounding protection device, which has the following beneficial effects:

[0014] In the technical solution disclosed in this utility model, by using the mounting base, positioning block and positioning component, during use, the personnel will install the positioning block through the mounting base, and then the personnel will place the mounting base on the surface of the placement base and install the mounting base through the positioning component, which improves the stability of the mounting base during use.

[0015] With the positioning component set by this utility model, during use, the operator places the mounting base on the ground, and then installs the limiting plate through the positioning bolt. After the limiting plate is installed, the operator rotates the threaded rod through the limiting plate. When the threaded rod rotates, it will drive the clamping plate to move towards the center. The clamping plate will then install the mounting base through the ground, which improves the efficiency of installing the mounting base and the stability of the mounting base. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the grounding plate structure of this utility model;

[0019] Figure 3 This utility model Figure 1Enlarged view of the structure at point A in the middle.

[0020] In the diagram: 1. Mounting base; 2. Positioning block; 3. Isolation rod; 4. Surge arrester; 5. Disconnecting switch; 6. Current transformer; 7. Grounding plate; 8. Positioning assembly; 81. Positioning bolt; 82. Limiting plate; 83. Threaded rod; 84. Clamping plate. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-3 In one embodiment of this utility model, a transformer neutral point grounding protection device includes a mounting base 1. Several positioning blocks 2 are fixedly installed inside the mounting base 1. Isolation rods 3 are fixedly installed on the surface of the positioning blocks 2. A surge arrester 4 is provided on the side adjacent to the isolation rod 3. A disconnecting switch 5 is provided on the side adjacent to the surge arrester 4. A current transformer 6 is fixedly installed on one side of the surface of the mounting base 1. A grounding plate 7 is provided on one side of the surface of the isolation rod 3. Positioning components 8 are provided on both sides of the bottom of the mounting base 1.

[0023] The specific problem addressed in this embodiment is that, during the installation of protective devices, bolts are often used for positioning and installation. However, after prolonged use, bolts are prone to rusting or loss of hardness, causing inconvenience during disassembly. This invention utilizes a mounting base 1, a positioning block 2, and a positioning component 8. During use, personnel install the positioning block 2 using the mounting base 1, and then place the mounting base 1 on the surface of the base and install it using the positioning component 8, thus improving the stability of the mounting base 1 during use.

[0024] The positioning component 8 includes positioning grooves on both sides of the surface of the mounting base 1. A limiting plate 82 is fixedly connected to the inside of the positioning grooves by a positioning bolt 81. A threaded groove is formed in the middle of the surface of the limiting plate 82. A threaded rod 83 is threadedly connected inside the threaded groove. A clamping plate 84 is rotatably connected to one end of the threaded rod 83. An embedding groove is formed on the surface of the clamping plate 84. An anti-slip rubber pad to improve stability is set inside the embedding groove. Mounting grooves are formed on both sides of the surface of the limiting plate 82. The size of the mounting grooves is adapted to the size of the positioning bolt 81. In this specific embodiment, during use, the operator places the mounting base 1 on the ground. Then, the operator installs the limiting plate 82 through the positioning bolt 81. After the limiting plate 82 is installed, the operator rotates the threaded rod 83 through the limiting plate 82. When the threaded rod 83 rotates, it will drive the clamping plate 84 to move towards the center. The clamping plate 84 will be installed on the mounting base 1 through the ground, which improves the efficiency of installing the mounting base 1 and the stability of the mounting base 1.

[0025] In this specific embodiment, a support base is fixedly installed at the bottom of the current transformer 6, and one side of the surface of the support base is fixedly installed at one end of the mounting base 1. One end of the grounding plate 7 is inserted into the ground. The surface of the grounding plate 7 is coated with an anti-corrosion agent to improve service life. Limiting grooves are opened at the top of the isolation rod 3 and the surge arrester 4. A guide plate is provided on the surface of the limiting groove.

[0026] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0027] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A transformer neutral grounding protection device comprising a mounting base (1), characterized in that: The mounting base (1) has several positioning blocks (2) fixedly installed inside. An isolation rod (3) is fixedly installed on the surface of the positioning block (2). A surge arrester (4) is provided on the side adjacent to the isolation rod (3). A disconnecting switch (5) is provided on the side adjacent to the surge arrester (4). A current transformer (6) is fixedly installed on one side of the surface of the mounting base (1). A grounding plate (7) is provided on one side of the surface of the isolation rod (3). Positioning components (8) are provided on both sides of the bottom of the mounting base (1). The positioning component (8) includes positioning grooves on both sides of the surface of the mounting base (1). A limiting plate (82) is fixedly connected inside the positioning groove by a positioning bolt (81). A threaded groove is provided in the middle of the surface of the limiting plate (82). A threaded rod (83) is threadedly connected inside the threaded groove. A clamping plate (84) is rotatably connected to one end of the threaded rod (83).

2. The transformer neutral grounding protection device according to claim 1, characterized in that: The surface of the clamping plate (84) is provided with an embedding groove, and the inside of the embedding groove is provided with an anti-slip rubber pad to improve stability.

3. A transformer neutral grounding protection device according to claim 2, characterized in that: The limiting plate (82) has mounting grooves on both sides of its surface, and the size of the mounting grooves is adapted to the size of the positioning bolt (81).

4. The transformer neutral grounding protection device of claim 1, wherein: The bottom of the current transformer (6) is fixedly mounted with a support base, and one side of the surface of the support base is fixedly mounted on one end of the mounting base (1).

5. The transformer neutral grounding protection device of claim 1, wherein: One end of the grounding plate (7) is inserted into the ground, and the surface of the grounding plate (7) is coated with an anti-corrosion agent to improve its service life.

6. A transformer neutral point grounding protection device according to claim 1, characterized in that: The top of both the isolation rod (3) and the lightning arrester (4) is provided with a limiting groove, and the surface of the limiting groove is provided with a guide plate.

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