Electromagnetic voltage transformer for GIS

Abstract

The utility model discloses an electromagnetic voltage transformer for a GIS (gas insulated switchgear), which relates to the technical field of transformers and comprises an electromagnetic voltage transformer body, four suspension clasps are fixedly mounted on four sides above the bottom of the electromagnetic voltage transformer body, and a locking mechanism is fixedly mounted on the ground of the electromagnetic voltage transformer body. A mounting mechanism is arranged at the bottom of the locking mechanism, and four mounting buckles are fixedly mounted at the left and right positions of the front and back surfaces of the mounting mechanism. According to the electromagnetic voltage transformer for the GIS, the trapezoidal block is supported by the high-elasticity supporting spring, the bottom of the inclined beveled edge mounting plate is supported by the top of the outer wall of the wear-resisting ball, so that the inclined beveled edge mounting plate can better move in the inner cavity of the mounting seat, and when the pressure of the inclined pressing block on the inclined beveled edge mounting plate is too large, the inclined beveled edge mounting plate can be prevented from moving in the inner cavity of the mounting seat. And the inclined beveled edge mounting plate can press the wear-resisting ball into the inner cavity of the placing groove, so that the inclined beveled edge mounting plate is prevented from shaking in the inner cavity of the mounting seat.

Description

Technical Field

[0001] The utility model relates to the technical field of mutual inductors, in particular to an electromagnetic voltage mutual inductor for GIS. Background Art

[0002] Gas-insulated metal-enclosed switchgear (GIS) is gaining increasing popularity in the global power industry due to its small footprint, complete enclosure of all components within a metal casing, minimal environmental interference, high reliability, easy installation and maintenance, and low operating costs. Currently, GIS equipment requires power frequency withstand voltage testing both during factory testing and after on-site installation. To prevent damage to the primary and secondary windings of the voltage transformer due to power frequency voltage, the voltage transformer must be disconnected from the GIS during the test and then reconnected after the test is complete.

[0003] An electromagnetic voltage transformer (EVT) is a high-voltage device that converts high voltage in the power grid into low voltage for easy monitoring and measurement. Structurally, a EVT is a small-capacity, compact, and high-voltage-ratio step-down transformer. Its basic principles are similar to those of a transformer, consisting of primary and secondary windings, an iron core, lead wires, and insulation. The operating principle, construction, and connection methods of an EVT are identical to those of a transformer. The main difference is that the EVT's capacity is very small, typically only tens to hundreds of volt-amperes. To this end, we propose an EVT for GIS.

[0004] The existing technology has the following problems:

[0005] The existing electromagnetic voltage transformer for GIS is inconvenient to install during use due to its large size, which affects the installation effect of the electromagnetic voltage transformer. Utility Model Content

[0006] The utility model provides an electromagnetic voltage transformer for GIS to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] An electromagnetic voltage transformer for GIS includes an electromagnetic voltage transformer body, four hanging buckles fixedly installed on four sides above the bottom of the electromagnetic voltage transformer body, a locking mechanism fixedly installed on the ground of the electromagnetic voltage transformer body, a mounting mechanism provided at the bottom of the locking mechanism, and four mounting buckles fixedly installed on the left and right positions of the front and rear surfaces of the mounting mechanism.

[0009] Preferably, the locking mechanism includes a dustproof plate and three adjusting screw sleeves, the middle part of the upper surface of the dustproof plate is fixedly installed with the bottom of the electromagnetic voltage transformer body, the middle part of the lower surface of the dustproof plate is fixedly installed with a beveled mounting plate, the outer walls of the three adjusting screw sleeves are rotatably connected to the right part of the mounting mechanism, the inner wall of the adjusting screw sleeve is threadedly connected with a screw, and the left end of the screw is fixedly installed with an inclined pressure block, and the beveled edge of the left bottom of the inclined pressure block overlaps with the beveled edge of the right side of the beveled mounting plate.

[0010] Preferably, the upper and lower parts of the inclined pressure block are slidably connected with guide bars, and the guide bar is fixedly installed on a side away from the inclined pressure block and the right part of the inner wall of the installation mechanism.

[0011] Preferably, a sealing strip is fixedly installed at the edge of the lower surface of the dustproof plate, and the bottom of the sealing strip overlaps with the edge of the upper surface of the mounting mechanism.

[0012] Preferably, the inclined surfaces of the front and rear portions of the beveled edge mounting plate are overlapped with beveled guide bars, and the side of the beveled guide bar away from the beveled edge mounting plate is fixedly mounted to the inner wall of the mounting mechanism.

[0013] Preferably, the mounting mechanism includes a mounting seat, the inclined surface on the left side of the inner wall of the mounting seat overlaps with the inclined surface on the left side of the beveled mounting plate, five mounting grooves parallel to the beveled guide bar are provided at the bottom of the inner cavity of the mounting seat, the inner wall of the mounting groove is plugged with a groove bar, and the groove bar is provided with a number of placement grooves, the top of the inner wall of the placement groove is overlapped with a trapezoidal block, the top of the trapezoidal block is movably connected with a wear-resistant ball, and the top of the outer wall of the wear-resistant ball overlaps with the bottom of the beveled mounting plate.

[0014] Preferably, high-elasticity support springs are fixedly mounted on the four corners of the bottom of the trapezoidal block, and the bottom of the high-elasticity support spring is fixedly mounted to the bottom of the inner cavity of the placement slot.

[0015] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0016] The utility model provides an electromagnetic voltage transformer for GIS, which utilizes the function of a guide bar to guide the inclined pressure block during movement so that the inclined pressure block can stably move left and right. The overlapping function between the inclined surface of the inclined guide bar and the inclined surface of the inclined chamfered edge mounting plate is utilized to limit the height of the inclined chamfered edge mounting plate, and at the same time facilitates the left and right movement of the inclined chamfered edge mounting plate, so as to better fix the inclined chamfered edge mounting plate in the inner cavity of the mounting seat.

[0017] The utility model provides an electromagnetic voltage transformer for GIS, which utilizes the overlapping effect of a sealing strip and the edge of the upper surface of a mounting base to isolate the gap between the inner cavity of the mounting base and the outside world, and can effectively prevent dust from entering the inner cavity of the mounting base from the outside world and affecting some structures in the inner cavity of the mounting base.

[0018] The utility model provides an electromagnetic voltage transformer for GIS, which uses a high-elasticity support spring to support a trapezoidal block, so that the top of the outer wall of the wear-resistant ball supports the bottom of the beveled edge mounting plate, so that the beveled edge mounting plate can better move in the inner cavity of the mounting seat. When the pressure of the oblique pressure block on the beveled edge mounting plate is too large, the beveled edge mounting plate can press the wear-resistant ball into the inner cavity of the placement groove, thereby preventing the beveled edge mounting plate from shaking in the inner cavity of the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional top view of the structure of the utility model;

[0020] Figure 2 This is a three-dimensional bottom-up structural diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the position structure of the beveled edge mounting plate of the utility model in the mounting seat;

[0022] Figure 4 For this utility model Figure 3 A schematic diagram of the structure enlarged in the middle;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the beveled edge mounting plate of the utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the mounting base of the utility model;

[0025] Figure 7 For this utility model Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 This is a schematic diagram of the internal structure of the mounting base of the utility model.

[0027] In the figure: 1. Electromagnetic voltage transformer body;

[0028] 2. Locking mechanism; 21. Dustproof plate; 22. Sealing strip; 23. Beveled mounting plate; 24. Oblique pressure block; 25. Oblique guide strip; 26. Adjusting screw sleeve; 27. Screw; 28. Guide strip;

[0029] 3. Mounting mechanism; 31. Mounting seat; 32. Slot; 33. Placement slot; 34. Trapezoidal block; 35. Mounting slot; 36. Wear-resistant ball; 37. High-elasticity support spring;

[0030] 4. Installation buckle; 5. Hanging buckle. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figure 1 and Figure 2 As shown, an electromagnetic voltage transformer for GIS includes an electromagnetic voltage transformer body 1, four hanging buckles 5 are fixedly installed on the four sides above the bottom of the electromagnetic voltage transformer body 1, a locking mechanism 2 is fixedly installed on the ground of the electromagnetic voltage transformer body 1, a mounting mechanism 3 is provided at the bottom of the locking mechanism 2, and four mounting buckles 4 are fixedly installed on the left and right positions of the front and rear of the mounting mechanism 3.

[0033] First, use bolts to fix the mounting buckle 4 with the mounting mechanism 3 in the appropriate position, and then use a sling to fix the hook on the hook 5 at the bottom of the electromagnetic voltage transformer body 1, and move the position of the locking mechanism 2 at the bottom of the electromagnetic voltage transformer body 1 to the position of the top of the inner cavity of the mounting mechanism 3. Then, the electromagnetic voltage transformer body 1 can be installed at the position of the fixed mounting mechanism 3 by using the cooperation between the locking mechanism 2 and the mounting mechanism 3.

[0034] like Figure 1 and Figure 3 As shown, the locking mechanism 2 includes a dustproof plate 21 and three adjusting screw sleeves 26. The middle part of the upper surface of the dustproof plate 21 is fixedly installed with the bottom of the electromagnetic voltage transformer body 1, and the middle part of the lower surface of the dustproof plate 21 is fixedly installed with a beveled mounting plate 23. The outer walls of the three adjusting screw sleeves 26 are rotatably connected to the right part of the mounting mechanism 3. The inner wall of the adjusting screw sleeve 26 is threadedly connected with a screw 27. The left end of the screw 27 is fixedly installed with an oblique pressure block 24. The oblique side of the left bottom of the oblique pressure block 24 overlaps with the oblique side of the right side of the oblique mounting plate 23.

[0035] Place the electromagnetic voltage transformer body 1 with the beveled mounting plate 23 into the inner cavity of the mounting seat 31, and then use the hexagonal wrench to rotate the adjusting screw sleeve 26. Under the action of the threaded connection, the screw 27 can be driven to push the bevel pressure block 24, so that the beveled mounting plate 23 moves to the left in the inner cavity of the mounting seat 31. The inner wall on the left side of the mounting seat 31 and the left side of the bevel pressure block 24 can be pressed against the left and right sides of the beveled mounting plate 23 to fix the beveled mounting plate 23, and the bottom of the electromagnetic voltage transformer body 1 can be fixed in the inner cavity of the mounting seat 31.

[0036] like Figure 3 and Figure 6 As shown, the upper and lower parts of the inclined pressure block 24 are slidably connected with guide bars 28 , and the guide bar 28 is fixedly installed on the right part of the inner wall of the installation mechanism 3 away from a side surface of the inclined pressure block 24 .

[0037] The guide bars 28 are used to guide the inclined pressure block 24 during movement so that the inclined pressure block 24 can move left and right stably.

[0038] like Figure 3 and Figure 4 As shown, a sealing strip 22 is fixedly installed on the edge of the lower surface of the dustproof plate 21, and the bottom of the sealing strip 22 overlaps the edge of the upper surface of the mounting mechanism 3.

[0039] By utilizing the overlapping effect of the sealing strip 22 and the edge of the upper surface of the mounting seat 31, the gap between the inner cavity of the mounting seat 31 and the outside world is isolated, which can effectively prevent dust from entering the inner cavity of the mounting seat 31 from the outside world and affecting some structures in the inner cavity of the mounting seat 31.

[0040] like Figure 3 As shown, the inclined surfaces of the front and rear portions of the beveled edge mounting plate 23 are overlapped with beveled guide bars 25 , and the side of the beveled guide bar 25 away from the beveled edge mounting plate 23 is fixedly mounted to the inner wall of the mounting mechanism 3 .

[0041] The overlapping effect between the inclined surface of the inclined guide bar 25 and the inclined surface on the inclined chamfered mounting plate 23 is utilized to limit the height of the inclined chamfered mounting plate 23, and at the same time facilitate the left and right movement of the inclined chamfered mounting plate 23 to better fix the inclined chamfered mounting plate 23 in the inner cavity of the mounting seat 31.

[0042] like Figure 6-Figure 8As shown, the mounting mechanism 3 includes a mounting seat 31, the inclined surface on the left side of the inner wall of the mounting seat 31 overlaps the inclined surface on the left side of the beveled mounting plate 23, and five mounting grooves 35 parallel to the beveled guide bar 25 are provided at the bottom of the inner cavity of the mounting seat 31. The inner wall of the mounting groove 35 is plugged with a groove bar 32, and the groove bar 32 is provided with a plurality of placement grooves 33. The top of the inner wall of the placement groove 33 is overlapped with a trapezoidal block 34, and the top of the trapezoidal block 34 is movably connected to the wear-resistant ball 36. The top of the outer wall of the wear-resistant ball 36 overlaps the bottom of the beveled mounting plate 23.

[0043] Insert the groove bar 32 into the inner cavity of the mounting groove 35 so that the wear-resistant ball 36 is located directly below the beveled mounting plate 23, reducing the wear caused by the beveled mounting plate 23 when moving in the inner cavity of the mounting seat 31, better controlling the position of the beveled mounting plate 23 in the inner cavity of the mounting seat 31, and improving the service life of the component.

[0044] like Figure 7 As shown, high-elasticity support springs 37 are fixedly installed at the four corners of the bottom of the trapezoidal block 34 , and the bottom of the high-elasticity support spring 37 is fixedly installed with the bottom of the inner cavity of the placement groove 33 .

[0045] The trapezoidal block 34 is supported by a high-elasticity support spring 37, so that the top of the outer wall of the wear-resistant ball 36 supports the bottom of the beveled edge mounting plate 23, so that the beveled edge mounting plate 23 can move better in the inner cavity of the mounting seat 31. When the pressure of the oblique pressure block 24 on the beveled edge mounting plate 23 is too great, the beveled edge mounting plate 23 can press the wear-resistant ball 36 into the inner cavity of the placement groove 33 to prevent the beveled edge mounting plate 23 from shaking in the inner cavity of the mounting seat 31.

[0046] The working principle of the present invention is as follows: first, the mounting buckle 4 with the mounting mechanism 3 is fixed in an appropriate position by a bolt, and the hook can be fixed to the hanging buckle 5 at the bottom of the electromagnetic voltage transformer body 1 by a sling, and the beveled mounting plate 23 at the bottom of the electromagnetic voltage transformer body 1 is moved to the position at the top of the inner cavity of the mounting seat 31, and the adjusting screw sleeve 26 can be rotated by a hexagonal wrench, which can drive the screw 27 to push the oblique pressure block 24 under the action of the threaded connection, so that the oblique mounting plate 23 moves to the left in the inner cavity of the mounting seat 31, and the inner wall on the left side of the mounting seat 31 and the left side of the oblique pressure block 24 can be adjusted to the left and right sides of the oblique mounting plate 23. By pressing tightly to fix the beveled mounting plate 23, the bottom of the electromagnetic voltage transformer body 1 can be fixed in the inner cavity of the mounting seat 31. At the same time, the trapezoidal block 34 is supported by the high-elasticity support spring 37, so that the top of the outer wall of the wear-resistant ball 36 supports the bottom of the beveled mounting plate 23, so that the beveled mounting plate 23 can better move in the inner cavity of the mounting seat 31. When the pressure of the oblique pressure block 24 on the beveled mounting plate 23 is too large, the beveled mounting plate 23 can press the wear-resistant ball 36 into the inner cavity of the placement groove 33 to prevent the beveled mounting plate 23 from shaking in the inner cavity of the mounting seat 31, so as to install the electromagnetic voltage transformer body 1.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic voltage transformer for GIS, comprising an electromagnetic voltage transformer body (1), characterized in that: Four hanging buckles (5) are fixedly installed on four sides above the bottom of the electromagnetic voltage transformer body (1); a locking mechanism (2) is fixedly installed on the ground of the electromagnetic voltage transformer body (1); a mounting mechanism (3) is arranged at the bottom of the locking mechanism (2); and four mounting buckles (4) are fixedly installed at left and right positions of the front and rear of the mounting mechanism (3).

2. The electromagnetic voltage transformer for GIS according to claim 1, characterized in that: The locking mechanism (2) comprises a dustproof plate (21) and three adjusting screw sleeves (26); the middle portion of the upper surface of the dustproof plate (21) is fixedly mounted to the bottom of the electromagnetic voltage transformer body (1); the middle portion of the lower surface of the dustproof plate (21) is fixedly mounted with a chamfered mounting plate (23); the outer walls of the three adjusting screw sleeves (26) are rotatably connected to the right portion of the mounting mechanism (3); the inner wall of the adjusting screw sleeve (26) is threadedly connected with a screw rod (27); the left end of the screw rod (27) is fixedly mounted with an oblique pressure block (24); the oblique edge of the left bottom of the oblique pressure block (24) overlaps the oblique edge of the right side of the oblique chamfered mounting plate (23).

3. The electromagnetic voltage transformer for GIS according to claim 2, characterized in that: The upper and lower parts of the inclined pressure block (24) are both slidably connected to a guide bar (28), and a side surface of the guide bar (28) away from the inclined pressure block (24) is fixedly mounted to the right part of the inner wall of the mounting mechanism (3).

4. The electromagnetic voltage transformer for GIS according to claim 2, characterized in that: A sealing strip (22) is fixedly mounted on the edge of the lower surface of the dustproof plate (21), and the bottom of the sealing strip (22) overlaps the edge of the upper surface of the mounting mechanism (3).

5. The electromagnetic voltage transformer for GIS according to claim 2, characterized in that: The inclined surfaces of the front and rear portions of the beveled edge mounting plate (23) are overlapped with beveled guide bars (25), and the side of the beveled guide bar (25) away from the beveled edge mounting plate (23) is fixedly mounted to the inner wall of the mounting mechanism (3).

6. The electromagnetic voltage transformer for GIS according to claim 1, characterized in that: The mounting mechanism (3) comprises a mounting seat (31), the inclined surface on the left side of the inner wall of the mounting seat (31) overlaps the inclined surface on the left side of the beveled edge mounting plate (23), the bottom of the inner cavity of the mounting seat (31) is provided with five mounting grooves (35) parallel to the beveled guide bar (25), the inner wall of the mounting groove (35) is plugged with a groove bar (32), the groove bar (32) is provided with a plurality of placement grooves (33), the top of the inner wall of the placement groove (33) overlaps with a trapezoidal block (34), the top of the trapezoidal block (34) is movably connected with a wear-resistant ball (36), and the top of the outer wall of the wear-resistant ball (36) overlaps with the bottom of the beveled edge mounting plate (23).

7. The electromagnetic voltage transformer for GIS according to claim 6, characterized in that: High-elasticity support springs (37) are fixedly mounted at the four corners of the bottom of the trapezoidal block (34), and the bottom of the high-elasticity support spring (37) is fixedly mounted to the bottom of the inner cavity of the placement groove (33).

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