Pressure deformation test measuring tool after transformer assembly

Abstract

The utility model relates to the field of transformers, and discloses a pressure deformation test measuring tool after transformer assembly, which comprises an electronic five-line gradienter and a measuring scale, an adjustable support is arranged at the bottom of the electronic five-line gradienter, and the measuring scale is arranged at the bottom of the electronic five-line gradienter. The relative height of the laser output window is adjusted through the adjustable support, and the electronic five-line gradienter is detachably sleeved with the movable support; according to the pressure deformation test measuring tool after the transformer is assembled, the deformation amount of the transformer can be accurately measured only by using the two electronic five-line gradienter and the measuring scale, the rapidness, operability and accuracy of a deformation test are greatly improved, and the pressure deformation test measuring tool is simple to operate and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of transformers, and specifically discloses a tooling for measuring pressure deformation after transformer assembly. Background Technology

[0002] A transformer tank is a thin-plate steel container that houses the transformer body and suspends accessories such as fins and oil conservators. The size of the tank varies with the internal pressure of the transformer. Vacuum and pressure deformation tests are suitable for transformers designed to require on-site vacuum injection of liquid, used to detect the deformation of the transformer tank after it is installed in the transformer body. These tests generally include vacuum (negative pressure) strength and positive pressure strength tests. Under vacuum, the tank contracts inward; under positive pressure, it expands outward. If the permanent deformation exceeds the maximum deviation, the tank is deemed unqualified, and this also verifies the dimensional stability of the transformer tank. The national standard GB 1094.1-2013 clearly stipulates that the permanent deformation of the tank after the test should meet the design expectation.

[0003] Because transformer pressure deformation tests require the establishment of a baseline independent of the transformer oil tank, the current testing fixtures and methods used are relatively cumbersome and complicated, and the accuracy of the tests is also relatively low. Utility Model Content

[0004] The purpose of this invention is to provide a measuring fixture for pressure deformation testing of a transformer after assembly. An electronic level is placed around the oil tank to form a measurement baseline. The measured values ​​of the transformer before and after vacuuming and before and after oil filling and positive pressure are recorded. The permanent deformation of the transformer is calculated. This invention can significantly improve the accuracy, speed, intuitiveness and rigor of the test.

[0005] This utility model provides a measuring fixture for pressure deformation testing of a transformer after assembly, including an electronic five-line level and a measuring ruler. The electronic five-line level has an adjustable bracket at its bottom, through which the relative height of the laser output window can be adjusted. It also includes a movable bracket, which is detachably mounted on the electronic five-line level.

[0006] Furthermore, the movable support includes a frame, the frame includes a housing, the housing is connected to multiple sets of vertical support columns, and the end of each support column away from the housing is provided with a caster wheel.

[0007] Furthermore, the support column is provided with a telescopic structure, which is used to control the length of the support column.

[0008] Furthermore, the support column includes an upper support column and a lower support column, the upper support column is hollow, and the lower support column is slidably disposed within the hollow of the upper support column.

[0009] Furthermore, the telescopic structure is an electric telescopic rod. The fixed end of the electric telescopic rod is connected to the inner top wall of the cavity of the upper support column, and the driving end of the electric telescopic rod is connected to the top of the lower support column.

[0010] Furthermore, a clamping device is provided on the electronic five-wire level. The clamping device is used to clamp the frame body, and the clamping device is in a "C" shape.

[0011] Furthermore, the clamping device includes a rotating rod. The rotating rod is connected to a fixed frame through a rotating shaft. A gear is provided on the rotating shaft. A sliding groove is provided on the clamping device, and a rack meshing with the gear is slidably arranged in the sliding groove.

[0012] Furthermore, the rack is connected to a pressing rod. The pressing rod is connected to the clamping device through a first spring in the moving direction. A locking device is also included, and the locking device is used to limit the rotation of the gear.

[0013] Furthermore, the locking device includes a wedge block. A limiting rod matching the wedge block is provided on the gear. The wedge block is connected to the fixed frame through a second spring in the moving direction. An inclined groove is provided on the wedge block. A pressing component is also included. The pressing component includes a pushing block. The pushing block is connected to a pressing part through a connecting rod. A third spring is sleeved on the connecting rod. The third spring is arranged outside the fixed frame, and the movement of the wedge block is controlled through the pressing component.

[0014] Beneficial effects: For the transformer pressure deformation test, the operator only needs two electronic five-wire levels and a measuring ruler to accurately measure the deformation amount of the transformer, which greatly improves the speed, ease of operation and accuracy of the deformation test. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the structural schematic diagram of the electronic five-wire laser level device of the present utility model;

[0017] Figure 3 is the usage effect diagram of the electronic five-wire laser level of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the support column of the present utility model;

[0019] Figure 5 is the structural schematic diagram of the clamping device of the present utility model.

[0020] In the diagram: 1. Electronic five-line level; 101. Adjustable bracket; 2. Movable bracket; 201. Frame; 202. Body; 203. Support column; 204. Casters; 205. Upper support column; 206. Lower support column; 3. Electric telescopic rod; 4. Snap-fit ​​device; 401. Rotating rod; 402. Rotating shaft; 403. Fixed frame; 404. Gear; 405. Slide groove; 406. Rack; 407. Pressure rod; 408. First spring; 5. Locking device; 501. Wedge; 502. Limiting rod; 503. Second spring; 504. Inclined groove; 6. Pressing assembly; 601. Push block; 602. Connecting rod; 603. Pressing part; 8. Transformer; 9. Measuring point. Detailed Implementation

[0021] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, some features described in the examples may be combined in other examples.

[0022] like Figures 1-5 As shown, a pressure deformation test measuring fixture for transformer assembly includes an electronic five-line level 1 and a measuring ruler. The bottom of the electronic five-line level 1 is provided with an adjustable bracket 101, through which the relative height of the laser output window can be adjusted. It also includes a movable bracket 2, which is detachably mounted on the electronic five-line level 1.

[0023] Furthermore, the movable support 2 includes a frame 201, the frame 201 includes a frame 202, the frame 202 is connected to a plurality of vertical support columns 203, and the end of the support column 203 away from the frame 202 is provided with a caster wheel 204.

[0024] When the electronic five-line level 1 needs to be moved, it can be easily moved by simply placing it on the moving bracket 2.

[0025] Furthermore, the support column 203 is provided with a telescopic structure, which is used to control the length of the support column 203.

[0026] When it is necessary to move the electronic five-line level 1, simply extend the support column 203 through the telescopic structure so that the caster wheel 204 contacts the ground, and then move it easily. After moving to the target position, activate the telescopic structure again to retract the support column 203 so that the adjustable bracket 101 contacts the ground, thus preventing the electronic five-line level 1 from moving.

[0027] Further, the support column 203 includes an upper support column 205 and a lower support column 206. The upper support column 205 has a cavity, and the lower support column 206 is slidably disposed within the cavity of the upper support column 205.

[0028] Further, the telescopic structure is an electric telescopic rod 3. The fixed end of the electric telescopic rod 3 is connected to the inner top wall of the cavity of the upper support column 205, and the driving end of the electric telescopic rod 3 is connected to the top of the lower support column 206.

[0029] Further, a clamping device 4 is provided on the electronic five-wire level 1. The clamping device 4 is used for clamping the frame 202, and the clamping device 4 is in a "C" shape.

[0030] Further, the clamping device 4 includes a rotating rod 401. The rotating rod 401 is connected to a fixed frame 403 through a rotating shaft 402. A gear 404 is provided on the rotating shaft 402. A chute 405 is provided on the clamping device 4, and a rack 406 engaged with the gear 404 is slidably disposed within the chute 405.

[0031] Further, the rack 406 is connected to a pressing rod 407. The pressing rod 407 is connected to the clamping device 4 through a first spring 408 in the moving direction. A locking device 5 is further included, and the locking device 5 is used to restrict the rotation of the gear 404.

[0032] Further, the locking device 5 includes a wedge block 501. A limiting rod 502 matching the wedge block 501 is provided on the gear 404. The wedge block 501 is connected to the fixed frame 403 through a second spring 503 in the moving direction. An inclined slot 504 is provided on the wedge block 5, and a pressing component 6 is further included. The pressing component 6 includes a pushing block 601. The pushing block 601 is connected to a pressing part 603 through a connecting rod 602. A third spring 604 is sleeved on the connecting rod 602. The third spring 604 is disposed outside the fixed frame 403, and the movement of the wedge block 501 is controlled through the pressing component 6.

[0033] In actual use, the movable bracket 2 is placed on the electronic five-line level 1 from top to bottom. During the placement process, the frame 202 contacts the pressure rod 407. Under the action of gravity, the first spring 408 is compressed, which at the same time drives the rack 406 to move down, so that the gear 404 drives the rotating shaft 402 to rotate, thereby rotating the rotating rod 401. This allows the locking device 4 to lock the frame 202. During the rotation, the limiting rod 502 pushes the wedge 501. After the locking device 4 has completely locked the frame 202, the wedge 501 is reset under the elastic force of the third spring 604, thus limiting the limiting rod 502. This allows for subsequent operations, such as adjusting the length of the support column 203 using the electric telescopic rod 3. When it is necessary to remove the movable bracket 2, the pressing part 603 is pressed manually. Under the action of the push block 601, the wedge 501 moves, releasing its restriction on the limiting rod 502. Then, the movable bracket 2 is pulled upwards to easily remove it.

[0034] Another aspect of this utility model provides a measurement method based on the above-mentioned transformer assembly pressure deformation test measuring fixture, including the following steps:

[0035] S1. Two sets of electronic five-line levels are installed diagonally opposite each other in the oil tank.

[0036] S2. Set measurement points 9 on the long axis side and short axis side of the oil tank;

[0037] S3. Measure the length of measuring point 9 and the baseline with a measuring ruler, and record the measured values ​​of transformer 8 before and after vacuuming, and before and after oil injection and positive pressure, and calculate the permanent deformation of the transformer.

[0038] The embodiments of the present utility model have been described above. However, the present embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make more equivalent embodiments under the guidance of the present embodiments, and all of them are within the protection scope of the present embodiments.

Claims

1. A tooling for measuring pressure deformation after transformer assembly, characterized in that, It includes an electronic five-line level (1) and a measuring ruler. An adjustable bracket (101) is provided at the bottom of the electronic five-line level (1) to adjust the relative height of the laser output window. It also includes a moving bracket (2), and the moving bracket (2) is detachably sleeved on the electronic five-line level (1).

2. The fixture for measuring pressure deformation after transformer assembly according to claim 1, characterized in that, The moving bracket (2) includes a frame body (201), the frame body (201) includes a frame (202), and multiple groups of vertical support columns (203) are connected to the frame (202). A universal wheel (204) is provided at one end of the support column (203) away from the frame (202).

3. The tooling for measuring pressure deformation after transformer assembly according to claim 2, characterized in that, The support column (203) is provided with a telescopic structure for controlling the length of the support column (203).

4. The fixture for measuring pressure deformation after transformer assembly according to claim 3, characterized in that, The support column (203) includes an upper support column (205) and a lower support column (206). The upper support column (205) has a cavity, and the lower support column (206) is slidably arranged in the cavity of the upper support column (205).

5. The fixture for measuring pressure deformation after transformer assembly according to claim 4, characterized in that, The telescopic structure is an electric telescopic rod (3). The fixed end of the electric telescopic rod (3) is connected to the top wall of the cavity of the upper support column (205), and the driving end of the electric telescopic rod (3) is connected to the top of the lower support column (206).

6. The fixture for measuring pressure deformation after transformer assembly according to claim 5, characterized in that, A clamping device (4) is provided on the electronic five-line level (1) for clamping the frame (202), and the clamping device (4) is in a "C" shape.

7. The fixture for measuring pressure deformation after transformer assembly according to claim 6, characterized in that, The clamping device (4) includes a rotating rod (401). The rotating rod (401) is connected to a fixed frame (403) through a rotating shaft (402). A gear (404) is provided on the rotating shaft (402). A chute (405) is opened on the clamping device (4), and a rack (406) meshing with the gear (404) is slidably arranged in the chute (405).

8. The fixture for measuring pressure deformation after transformer assembly according to claim 7, characterized in that, The rack (406) is connected to a pressing rod (407). The pressing rod (407) is connected to the clamping device (4) through a first spring (408) in the moving direction. It also includes a locking device (5) for restricting the rotation of the gear (404).

9. The fixture for measuring pressure deformation after transformer assembly according to claim 8, characterized in that, The locking device (5) includes a wedge block (501). A limiting rod (502) matching the wedge block (501) is provided on the gear (404). The wedge block (501) is connected to the fixed frame (403) through a second spring (503) in the moving direction. An inclined slot (504) is opened on the wedge block (501). It also includes a pressing component (6). The pressing component (6) includes a pushing block (601). The pushing block (601) is connected to a pressing part (603) through a connecting rod (602). A third spring (604) is sleeved on the connecting rod (602), and the third spring (604) is arranged outside the fixed frame (403). The movement of the wedge block (501) is controlled through the pressing component (6).

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