Temperature measuring device and temperature measuring method for transformer

Abstract

The application discloses a temperature measuring device and method for a transformer, a transformer body, a transformer winding arranged in the inner cavity of the transformer body, a lifting assembly arranged on the transformer body and used for adjusting the height and realizing temperature measurement at different heights, and an adjusting assembly arranged on the lifting assembly and used for adjusting the temperature measurement direction during temperature measurement, wherein the adjusting assembly comprises a connecting frame and an electric push rod. In the application, the electric push rod is only needed to work during use, and the temperature measuring probe can be driven to move in an arc shape on a horizontal plane under the cooperation of the limiting frame, the connecting plate and the connecting block, and the temperature measuring probe always faces the transformer winding during the arc movement, so that temperature measurement at different positions is realized. Under the action of the lifting assembly, the temperature measuring probe can be driven to move up and down, and temperature measurement at different height positions is realized.

Description

Technical Field

[0001] This invention relates to the field of transformer temperature measurement technology, and in particular to a transformer temperature measurement device and method. Background Technology

[0002] Transformers are the core equipment in power systems that realize the conversion and transmission of electrical energy. Their core function is to change the voltage level of alternating current while maintaining a constant frequency, thereby solving key problems such as long-distance low-loss transmission of electrical energy and power distribution adaptability to different electrical equipment.

[0003] Transformer temperature measurement is a key means to ensure the safe operation of equipment and prevent insulation aging and faults. One common method is to measure the temperature of the windings using a temperature probe. However, in the current technology, the temperature probe is often fixed in a specific position, making it difficult to measure different positions, which may lead to some errors in the measured data. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned above by providing a temperature measuring device and method for a transformer, thereby achieving the advantage of measuring the temperature at different locations.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a temperature measuring device for a transformer, comprising: The transformer body has a transformer winding installed inside its cavity; A lifting assembly is mounted on the transformer body to adjust its height and enable temperature measurement at different heights. An adjustment component, which is disposed on the lifting component, is used to adjust the temperature measurement orientation during temperature measurement; The adjustment assembly includes a connecting frame and an electric push rod. The connecting frame is mounted on the lifting assembly, and there are two electric push rods, both of which are mounted on the lifting assembly. A limit frame is provided at one end of the connecting frame; The output ends of both electric push rods are connected to movable seats, and a horizontal plate is slidably arranged on the movable seats. A connecting block that penetrates the limiting frame is rotatably arranged on the surface of the horizontal plate. The mounting assembly is located on top of the connecting block. A mounting plate is mounted on the mounting assembly, and a temperature probe is provided on the surface of the mounting plate for temperature measurement. The mounting assembly is used to enable quick assembly and disassembly of the mounting plate.

[0006] Furthermore, the lifting assembly includes columns and a drive motor. The number of columns is four and they are respectively arranged at the four corners of the inner cavity of the transformer body. The drive motor is arranged on the bottom surface of the transformer body. The output shaft of the drive motor is connected to a lead screw that penetrates and extends into the inner cavity of the transformer body. The surface of the lead screw is screwed with a fixed frame that slides on the surface of four columns. The connecting frame and the electric push rod are both mounted on the fixed frame.

[0007] Furthermore, the top view of the limiting frame is an arc-shaped frame with arc-shaped holes on its surface.

[0008] Furthermore, both ends of the electric push rod are provided with connecting plates, and the two connecting plates are respectively connected to the fixed frame and the movable seat.

[0009] Furthermore, the front view of the movable seat is an inverted U-shape, and a rectangular hole is provided on the surface of the movable seat. One end of the horizontal plate is slidably disposed in the rectangular hole on the surface of the movable seat.

[0010] Furthermore, the connecting block has an arc-shaped cross-section when viewed from above, and the surface of the connecting block slides and fits against the surface of the limiting frame.

[0011] Furthermore, the mounting assembly includes a mounting base disposed on the top of the connecting block, a pressure plate slidably disposed in the inner cavity of the mounting base, a spring disposed between the surface of the pressure plate and the surface of the mounting base, a limit post disposed on the inner surface of the mounting base, and the mounting plate being inserted into the mounting base.

[0012] Furthermore, the surface of the mounting base is provided with a groove, and the side surface of the mounting base is provided with a U-shaped groove communicating with the groove. The surface of the mounting base is provided with a protrusion located in the groove, and the surface of the pressure plate is provided with a recess corresponding to the protrusion on the surface of the mounting base.

[0013] Furthermore, the surface of the mounting plate is provided with a limiting groove that corresponds to and is the same size as the limiting post.

[0014] A method for measuring the temperature of a transformer, the method is as follows: S1. The temperature of the transformer winding is measured by pointing the temperature probe toward the transformer winding. S2. The electric push rods on both sides work together. One electric push rod retracts and the other electric push rod extends, thereby driving the movable seat to move left and right. S3. When the movable seat moves left and right, under the action of the horizontal plate and the limiting frame, the connecting block slides in the arc-shaped hole on the surface of the limiting frame, thereby driving the installation component connected to it and the temperature probe on the installation component to also make arc-shaped movements, thereby realizing temperature measurement at different positions on the surface of the transformer winding. S4. The drive motor rotates the lead screw, which, under the limiting action of the column, moves the connecting frame up and down, thereby moving the adjustment component and the temperature probe up and down, thus achieving height adjustment. S5. After adjusting the height, repeat the operation of S2 to achieve surface temperature measurement of transformer windings at different heights.

[0015] The beneficial effects of this invention are reflected in: 1. In this invention, by adjusting the settings of the components, during use, only the electric push rod needs to work, and with the cooperation of the limit frame, connecting plate and connecting block, the temperature probe can be driven to make arc-shaped movements on the horizontal plane. The temperature probe always faces the transformer winding, thereby realizing temperature measurement at different positions. Under the action of the lifting component, the temperature probe can be driven to move up and down, thereby realizing temperature measurement at different height positions.

[0016] 2. This invention, through the configuration of the mounting components, simplifies installation of the mounting plate by moving the pressure plate and inserting it into the groove on the surface of the mounting base. Then, the pressure plate is released, allowing the spring to press against the mounting plate. Simultaneously, the limiting post is inserted into the limiting groove on the surface of the mounting plate, thus limiting its position. Conversely, disassembly is also performed by moving the pressure plate and then the mounting plate, allowing the limiting post to be pulled out of the limiting groove, enabling the removal of the mounting plate. This simple operation facilitates the disassembly and installation of the mounting plate, making subsequent replacement and maintenance of the temperature probe easier. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the transformer body of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing frame, adjusting component, and mounting component of the present invention; Figure 3 This is a partial structural schematic diagram of the adjustment component of the present invention; Figure 4 This is a partial cross-sectional view of the adjusting component of the present invention; Figure 5 This is a schematic diagram of the structure of the mounting component of the present invention; Figure 6 This is a cross-sectional view of the mounting components of the present invention.

[0018] In the picture: 1. Transformer body; 2. Transformer winding; 3. Column; 4. Drive motor; 5. Lead screw; 6. Fixing frame; 7. Connecting frame; 8. Limiting frame; 9. Electric push rod; 10. Movable seat; 11. Horizontal plate; 12. Connecting block; 13. Mounting seat; 14. Pressure plate; 15. Spring; 16. Limiting post; 17. Mounting plate; 18. Temperature probe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-6 This invention discloses a temperature measuring device for a transformer, comprising: The transformer body 1 has a transformer winding 2 installed inside its cavity.

[0021] The lifting assembly is installed on the transformer body 1 to adjust the height and achieve temperature measurement at different heights. The lifting assembly includes four columns 3, which are respectively located at the four corners of the inner cavity of the transformer body 1; The lifting assembly also includes a drive motor 4 disposed on the bottom surface of the transformer body 1. The output shaft of the drive motor 4 is connected to a lead screw 5 that penetrates and extends into the inner cavity of the transformer body 1. The drive motor 4 drives the lead screw 5 to rotate. The lead screw 5 is screwed to a fixed frame 6 that slides on the surface of four columns 3. Due to the limitation of the columns 3, the fixed frame 6 can only slide up and down on the surface of the columns 3. Therefore, when the drive motor 4 drives the lead screw 5 to rotate, it will drive the fixed frame 6 to move up and down.

[0022] An adjustment component, which is mounted on the lifting component, is used to adjust the direction of temperature measurement during temperature measurement. The adjustment assembly includes a connecting frame 7 disposed on the bottom surface of the fixed frame 6, and a limiting frame 8 disposed at one end of the connecting frame 7. The top view of the limiting frame 8 is an arc-shaped frame with an arc-shaped hole on its surface. The adjustment assembly also includes two electric push rods 9, each located at the bottom of the fixed frame 6. Each electric push rod 9 has a connecting plate at both ends, with one connecting plate being used to connect to the fixed frame 6. The output ends of the two electric push rods 9 are connected to movable seats 10 through connecting plates, which move horizontally under the action of the electric push rods 9. The front view of the movable seat 10 is an inverted U-shape, and the surface of the movable seat 10 is provided with rectangular holes. The number of movable seats 10 corresponds one-to-one with the number of transformer windings 2, and adjacent movable seats 10 are connected by connecting plates, thereby ensuring that when the electric push rods 9 on both sides are working, they can drive all movable seats 10 to move horizontally. A horizontal plate 11 is slidably disposed in a rectangular hole on the surface of the movable seat 10, with one end penetrating and extending to the outside of the movable seat 10. The rectangular hole allows the horizontal plate 11 to move only horizontally back and forth. A connecting block 12 that penetrates the limiting frame 8 is rotatably disposed on the surface of the horizontal plate 11. The connecting block 12 has an arc-shaped cross-section when viewed from above, and its surface slides and fits against the surface of the limiting frame 8. The curvature of the connecting block 12 matches the curvature of the arc-shaped hole on the surface of the limiting frame 8. Through sliding fit, it is ensured that when the connecting block 12 cannot move up and down, it can only move along the arc-shaped hole on the surface of the limiting frame 8. At the same time, the horizontal plate 11 can move back and forth, and the horizontal plate 11 is rotatably connected to the connecting block 12. This ensures that when the movable seat 10 moves horizontally left and right, it will drive the connecting block 12 to move along the arc-shaped hole on the surface of the limiting frame 8.

[0023] The mounting component is located on the top of the connecting block 12. The mounting component has a mounting plate 17 mounted on it. The surface of the mounting plate 17 is provided with a temperature probe 18 for temperature measurement. The mounting component is used to enable quick assembly and disassembly of the mounting plate 17. The mounting assembly includes a mounting base 13 disposed on the top of the connecting block 12. The surface of the mounting base 13 is provided with a groove, and the side surface of the mounting base 13 is provided with a U-shaped groove communicating with the groove. The U-shaped groove corresponds to the temperature probe 18. A pressure plate 14 is slidably disposed in the inner cavity of the mounting base 13. The surface of the mounting base 13 is provided with a protrusion located in the groove, and the surface of the pressure plate 14 is provided with a recess corresponding to the protrusion on the surface of the mounting base 13. Through the correspondence between the protrusion and the recess, the pressure plate 14 can only move horizontally along the setting direction of the protrusion. A spring 15 is provided between the surface of the pressure plate 14 and the surface of the mounting base 13. The mounting plate 17 is inserted into the groove on the surface of the mounting base 13. Under the action of the spring 15, the mounting plate 17 can be pressed against the side wall between the pressure plate 14 and the mounting base 13. The inner surface of the mounting base 13 is provided with a limiting post 16, and the surface of the mounting plate 17 is provided with a limiting groove that corresponds to the limiting post 16 and is adapted in size. The mounting plate 17 is limited by inserting the limiting post 16 into the limiting groove.

[0024] Through the above structural settings: 1. During use, the electric push rods 9 on both sides operate, with one side extending and the other side retracting, thereby driving the movable seat 10 to move horizontally. With the cooperation of the limit frame 8, the horizontal plate 11, and the connecting block 12, when the movable seat 10 moves left and right, it can drive the mounting base 13 to make an arc-shaped movement. Since the temperature probe 18 is mounted on the mounting base 13 through the mounting plate 17, it will also make an arc-shaped movement. While making an arc-shaped movement, the temperature probe 18 always faces the transformer winding 2, thereby realizing temperature measurement at different positions. Under the action of the drive motor 4 driving the lead screw 5 to rotate, the fixed frame 6 can be driven to move up and down, thereby also driving the temperature probe 18 to move up and down, thus realizing temperature measurement at different height positions.

[0025] 2. During use, when installing the mounting plate 17, simply move the pressure plate 14 and insert the mounting plate 17 into the groove on the surface of the mounting base 13. Then, release the pressure plate 14, allowing it to be pressed against the mounting plate 17 by the spring 15. At the same time, the limiting post 16 is inserted into the limiting groove on the surface of the mounting plate 17, thus limiting the mounting plate 17 and completing the installation. Conversely, when disassembling, move the pressure plate 14 and then move the mounting plate 17 to pull the limiting post 16 out of the limiting groove, allowing the mounting plate 17 to be removed. With simple operation, the mounting plate 17 can be disassembled and installed, facilitating the subsequent replacement and maintenance of the temperature probe 18. A method for measuring the temperature of a transformer, the method is as follows: S1. The temperature of the transformer winding 2 is measured by pointing the temperature probe 18 toward the transformer winding 2. S2. The electric push rods 9 on both sides work, one electric push rod 9 retracts and the other electric push rod 9 extends, thereby driving the movable seat 10 to move left and right. S3. When the movable seat 10 moves left and right, under the action of the horizontal plate 11 and the limiting frame 8, the connecting block 12 slides in the arc-shaped hole on the surface of the limiting frame 8, thereby driving the installation component connected to it and the temperature probe 18 on the installation component to also make arc-shaped movements, thereby realizing temperature measurement at different positions on the surface of the transformer winding 2. S4. The drive motor 4 operates, causing the lead screw 5 to rotate. Under the limiting action of the column 3, the connecting frame 7 moves up and down, which in turn causes the adjusting component and the temperature probe 18 to move up and down, thereby achieving height adjustment. S5. After adjusting the height, repeat the operation of S2 to achieve surface temperature measurement of transformer winding 2 at different heights.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0028] Additionally, "multiple" refers to two or more.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A temperature measuring device for a transformer, characterized in that, include: The transformer body (1) has a transformer winding (2) installed in its inner cavity. A lifting assembly is installed on the transformer body (1) to adjust the height and measure the temperature at different heights. An adjustment component, which is disposed on the lifting component, is used to adjust the temperature measurement orientation during temperature measurement; The adjustment assembly includes a connecting frame (7) and an electric push rod (9). The connecting frame (7) is mounted on the lifting assembly, and there are two electric push rods (9), both of which are mounted on the lifting assembly. A limit frame (8) is provided at one end of the connecting frame (7); The output ends of the two electric push rods (9) are connected to movable seats (10), and a horizontal plate (11) is slidably arranged on the movable seat (10). A connecting block (12) that penetrates the limiting frame (8) is rotatably arranged on the surface of the horizontal plate (11). The mounting component is located on the top of the connecting block (12). The mounting component has a mounting plate (17) mounted on it. The surface of the mounting plate (17) is provided with a temperature probe (18) for measuring temperature. The mounting component is used to enable quick assembly and disassembly of the mounting plate (17).

2. The temperature measuring device for a transformer according to claim 1, characterized in that: The lifting assembly includes a column (3) and a drive motor (4). There are four columns (3) and they are respectively located at the four corners of the inner cavity of the transformer body (1). The drive motor (4) is located on the bottom surface of the transformer body (1). The output shaft of the drive motor (4) is connected to a lead screw (5) that penetrates and extends into the inner cavity of the transformer body (1). The surface of the lead screw (5) is screwed with a fixed frame (6) that slides on the surface of the four columns (3). The connecting frame (7) and the electric push rod (9) are both mounted on the fixed frame (6).

3. The temperature measuring device for a transformer according to claim 1, characterized in that: The top view of the limiting frame (8) is an arc frame with an arc-shaped hole on the surface.

4. The temperature measuring device for a transformer according to claim 2, characterized in that: Both ends of the electric push rod (9) are provided with connecting plates, and the two connecting plates are respectively connected to the fixed frame (6) and the movable seat (10).

5. The temperature measuring device for a transformer according to claim 1, characterized in that: The front view of the movable seat (10) is an inverted U-shape, and a rectangular hole is provided on the surface of the movable seat (10). One end of the horizontal plate (11) is slidably disposed in the rectangular hole on the surface of the movable seat (10).

6. The temperature measuring device for a transformer according to claim 1, characterized in that: The connecting block (12) is an arc-shaped block in top view, and the surface of the connecting block (12) slides and fits against the surface of the limiting frame (8).

7. The temperature measuring device for a transformer according to claim 1, characterized in that: The mounting assembly includes a mounting base (13) disposed on the top of the connecting block (12), a pressure plate (14) is slidably disposed in the inner cavity of the mounting base (13), a spring (15) is disposed between the surface of the pressure plate (14) and the surface of the mounting base (13), a limit post (16) is disposed on the inner surface of the mounting base (13), and the mounting plate (17) is inserted into the mounting base (13).

8. The temperature measuring device for a transformer according to claim 7, characterized in that: The surface of the mounting base (13) is provided with a groove, and the side surface of the mounting base (13) is provided with a U-shaped groove communicating with the groove. The surface of the mounting base (13) is provided with a protrusion located in the groove, and the surface of the pressure plate (14) is provided with a recess corresponding to the protrusion on the surface of the mounting base (13).

9. The temperature measuring device for a transformer according to claim 7, characterized in that: The surface of the mounting plate (17) is provided with a limiting groove that corresponds to and is the same size as the limiting post (16).

10. A method for measuring the temperature of a transformer, characterized in that, Including the temperature measuring device for a transformer as described in any one of claims 1-9, the method is as follows: S1. The temperature of the transformer winding (2) is measured by pointing the temperature probe (18) toward the transformer winding (2); S2. The electric push rods (9) on both sides work together. One electric push rod (9) retracts and the other electric push rod (9) extends, thereby driving the movable seat (10) to move left and right. S3. When the movable seat (10) moves left and right, under the action of the horizontal plate (11) and the limiting frame (8), the connecting block (12) slides in the arc hole on the surface of the limiting frame (8), thereby driving the installation component connected to it and the temperature probe (18) on the installation component to also make arc movements, thereby realizing temperature measurement at different positions on the surface of the transformer winding (2). S4. By driving the motor (4) to work, the lead screw (5) is rotated, and under the limiting action of the column (3), the connecting frame (7) is moved up and down, which in turn drives the adjustment component and the temperature probe (18) to move up and down, thereby realizing the height adjustment: S5. After adjusting the height, repeat the operation of S2 to realize the surface temperature measurement of the transformer winding (2) at different heights.

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