Casing anti-seismic test tool frame

Abstract

The utility model discloses a sleeve anti -seismic test frock frame, including base, sleeve mounting panel, anti -seismic test frame, the base is fixed on the preset base surface through expansion screw, the anti -seismic test frame includes bottom plate, reinforcing rib, support frame, reinforcing rib and top plate, and the first bottom plate is installed on the base along the axial direction vertical penetration through the first connecting bolt, and the second bottom plate is installed on the first top plate along the axial direction vertical penetration through the second connecting bolt, and the sleeve mounting panel is installed on the second bottom plate along the axial direction vertical penetration through the third connecting bolt. The bottom of support frame is welded with bottom plate, and the top is welded with top plate. The utility model improves the versatility and interchangeability of test frock frame, reduces its welding cost and production time, enhances the stability and practicality of anti -seismic test frock frame, and is convenient for handling hoisting.

Description

Technical Field

[0001] This utility model relates to the field of test fixture technology, specifically to a sleeve seismic test fixture frame. Background Technology

[0002] High-voltage bushings are used to allow high-voltage conductors to pass through barriers with different electrical potentials, serving both insulation and support functions. High-voltage bushings play a crucial role in current power systems. Their design, manufacturing, and testing directly affect the safe and reliable operation of power system equipment. With the development of the power industry and the increasing frequency of earthquakes, ensuring the safe and stable operation of power equipment in vibration environments has become increasingly important. As a key component of the power system, the seismic performance of high-voltage bushings directly impacts the reliability and safety of the entire power system.

[0003] The seismic test for high-voltage bushings is a test apparatus designed to test and evaluate the performance of high-voltage bushings under seismic loading. Seismic simulation shaking table dynamic testing of electrical equipment is currently the most accurate and advanced method for studying the seismic performance of electrical equipment. Through shaking table testing, seismic loading can be realistically simulated to test the seismic performance of high-voltage bushings.

[0004] The seismic testing fixture for high-voltage bushings is one of the important pieces of equipment on the seismic simulation test bench used for testing high-voltage bushings. Developing seismic testing fixtures suitable for high-voltage bushings not only improves the stability and reliability of the testing equipment but also provides crucial data support for related tests. The design and application of this testing fixture, combined with advanced shaking table testing technology, can effectively enhance the equipment's adaptability to vibration environments and ensure the reliability of testing.

[0005] Traditional high-voltage bushing seismic testing fixtures are primarily constructed as a single welded steel structure. Due to significant differences in the core dimensions of various high-voltage bushings, existing fixtures must be custom-made and welded individually for each bushing specification, resulting in a single fixture being unsuitable for different bushing sizes. The welding process requires multiple layers of continuous, irreversible welding, with each fixture taking weeks to produce, severely limiting testing efficiency and failing to meet the demands of sudden earthquake testing. The single-piece welded structure leads to bulky and excessively heavy fixtures: transportation requires specialized logistics equipment, on-site installation relies on heavy lifting machinery, and disassembly and storage are impossible after testing, resulting in high indirect testing costs. When new bushings or testing standards are introduced, existing fixtures cannot be partially adjusted or have components reused, necessitating complete scrapping and replacement, causing continuous resource waste. Utility Model Content

[0006] The purpose of this invention is to overcome the problems of traditional high-pressure bushing seismic testing fixtures, such as complex welding structures, long welding times, low versatility, high costs, and inconvenient transportation and hoisting. This invention provides a bushing seismic testing fixture that can be disassembled for independent use or assembled and stacked, thereby improving its versatility and interchangeability, reducing welding costs and production time, enhancing the stability and practicality of the seismic testing fixture, and facilitating handling and hoisting.

[0007] The technical solution of this utility model is a casing seismic test fixture, including a base, a casing mounting plate, a first seismic test fixture and a second seismic test fixture; The base is fixed to the surface of the preset substrate by expansion screws; The first seismic test frame includes a first base plate, a first reinforcing rib, a first support frame, a second reinforcing rib, and a first top plate; The second seismic test frame includes a second base plate, a third reinforcing rib, a second support frame, a fourth reinforcing rib, and a second top plate.

[0008] Furthermore, the first base plate is vertically mounted on the base along the axial direction by the first connecting bolt; The second base plate is installed vertically through the first top plate along the axial direction by the second connecting bolt. The sleeve mounting plate is installed vertically through the second base plate along the axial direction by the third connecting bolt.

[0009] Furthermore, the bottom of the first support frame is welded perpendicularly to the first base plate and the top is welded perpendicularly to the first top plate; The bottom of the second support frame is welded perpendicularly to the second base plate and the top is welded perpendicularly to the second top plate.

[0010] Furthermore, the first reinforcing rib is welded laterally between the first base plate and the side wall of the first support frame; The second reinforcing rib is welded laterally between the first top plate and the side wall of the first support frame; The third reinforcing rib is welded between the second base plate and the side wall of the second support frame; The fourth reinforcing rib is welded between the second top plate and the side wall of the second support frame.

[0011] Furthermore, the support frame has a cylindrical structure or a non-cylindrical polyhedral structure.

[0012] Furthermore, both the top plate and the bottom plate have through holes at their centers for axially penetrating the outer sleeve core.

[0013] Furthermore, the base, top plate, and bottom plate are evenly distributed with multiple bolt connection hole groups along their circumferential edges, and the center distance of each group of bolt connection holes is different. Furthermore, both the bottom plate and the top plate have through holes at their centers, and the through holes between the bottom plates and top plates of adjacent layers are coaxially arranged to allow the core of the sleeve to be tested to be installed axially. The beneficial effects of this utility model are: (1) This utility model provides multiple threaded mounting holes with different hole spacings on the bottom and top plates of the test fixture, allowing for disassembly and use of sleeves with different diameters and lengths, or stacking and assembling them. Each test fixture can be used as an independent unit or stacked together, improving the interchangeability and versatility of the test fixture and solving the problem that traditional welding fixtures with fixed dimensions cannot adapt to sleeves of different specifications. (2) The present invention welds reinforcing ribs horizontally between the support frame and the top and bottom plates of each layer, which solves the problem of instability of traditional frame structures in vibration transmission, and helps to enhance the torsional stiffness of the tooling frame in earthquake simulation and ensure the stability of the testing process. (3) This utility model of test fixtures can be disassembled and used independently, or assembled and stacked, which improves versatility. The frame replaces the original one-piece molded fixture frame that needs to be welded according to various types and sizes of sleeves. It can be disassembled from a whole into individual parts, and each part can be transported independently. Compared with the welded one-piece molded fixture frame, it is more convenient to handle, hoist and transport. It saves the welding production time and money cost of the fixture frame. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the single-layer working mode structure of the device of this utility model.

[0017] Figure 3 This is a structural diagram of the double-layer superimposed working mode of the device of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Base; 2. First connecting bolt; 3. First base plate; 4. First reinforcing rib; 5. First support frame; 6. Second reinforcing rib; 7. First top plate; 8. Second base plate; 9. Second connecting bolt; 10. Third reinforcing rib; 11. Second support frame; 12. Fourth reinforcing rib; 13. Second top plate; 14. Sleeve mounting plate; 15. Third connecting bolt; 16. First seismic test frame; 17. Second seismic test frame. Detailed Implementation

[0019] like Figure 1 As shown, a casing seismic test fixture includes a base 1, a casing mounting plate 14, a first seismic test frame 16, and a second seismic test frame 17. Base 1 is fixed to the surface of the preset base by expansion screws; The first seismic test frame 16 includes a first base plate 3, a first reinforcing rib 4, a first support frame 5, a second reinforcing rib 6, and a first top plate 7; The second seismic test frame 17 includes a second base plate 8, a third reinforcing rib 10, a second support frame 11, a fourth reinforcing rib 12, and a second top plate 13.

[0020] The first base plate 3 is vertically installed on the base along the axial direction by the first connecting bolt 2; The second base plate 8 is vertically installed on the first top plate 7 through the second connecting bolt 9 along the axial direction; The sleeve mounting plate 14 is installed vertically through the third connecting bolt 15 along the axial direction onto the second base plate 8.

[0021] The bottom of the first support frame 5 is welded perpendicularly to the first base plate 3 and the top is welded perpendicularly to the first top plate 7; The bottom of the second support frame 11 is welded perpendicularly to the second base plate 8 and the top is welded perpendicularly to the second top plate 13.

[0022] The first reinforcing rib 4 is welded laterally between the side wall of the first base plate 3 and the first support frame 5; The second reinforcing rib 6 is welded laterally between the first top plate 7 and the side wall of the first support frame 5; The third reinforcing rib 10 is welded between the side wall of the second base plate 8 and the second support frame 11; The fourth reinforcing rib 12 is welded between the side wall of the second top plate 13 and the second support frame 11.

[0023] The support frame has a cylindrical structure or a non-cylindrical polyhedral structure.

[0024] Both the top plate and the bottom plate have through holes at their centers for axial installation of the external sleeve core.

[0025] The base, top plate, and bottom plate have multiple bolt connection hole groups evenly distributed along their circumferential edges, and the center distance of each group of bolt connection holes is different. Both the bottom plate and the top plate have through holes at their centers, and the through holes between the bottom plate and the top plate of adjacent layers are coaxially arranged to allow the core of the sleeve to be tested to be installed axially. The first seismic test frame 16 and the second seismic test frame 17 of this utility model constitute independent functions that can be freely disassembled and assembled. Their typical application scenarios are as follows: like Figure 2As shown, when testing a short and thick high-voltage bushing, such as a high-current bushing, the first base plate 3 of the first seismic test frame 16 is fixed to the upper surface of the base 1 by the first connecting bolt 2; the bushing core to be tested passes through the central through hole 20 of the first base plate 3 and the central through hole of the first top plate 7 from bottom to top; the bushing flange is fixed to the preset interface position on the upper surface of the first top plate 7 by bolts. At this time, the first support frame 5, the first reinforcing rib 4, and the second reinforcing rib 6 together form a lateral force resisting box structure, which meets the radial stiffness requirements of the short and thick bushing.

[0026] like Figure 3 As shown, when testing slender high-voltage bushings, such as transformer bushings and oil and gas bushings, the first seismic test frame 16 is installed on the base 1 according to the above steps; the second base plate 8 of the second seismic test frame 17 is fixed to the upper surface of the first top plate 7 through the second connecting bolts 9; the bushing core passes through the through hole of the first seismic test 16, the through hole of the second seismic test 17, and the central through hole of the bushing mounting plate 14 in sequence; the bushing flange is fixed through the third bolt hole group on the edge of the second top plate 13.

[0027] In this mode, the cylindrical structure of the second support frame 11 provides axial constraint for the slender sleeve, and combined with the oblique support of the third reinforcing rib 10 and the fourth reinforcing rib 12, effectively suppresses the buckling deformation of the sleeve during vibration. When the length of the sleeve core exceeds the total height of the double-layer fixture: select an extension module with the same structure as the second seismic test frame 17; fix the base plate of the extension module to the upper surface of the second top plate 13 with bolts of the same specification as the second connecting bolt 9; ensure that the central through holes of each layer are precisely aligned through the coaxial positioning boss and groove; according to the actual length requirements of the core, N levels (N≥1) of extension modules can be continuously stacked. The multi-level stacked structure maintains the interface compatibility of the entire system by reusing the specification of the second connecting bolt 9, while the reinforcing ribs of each layer independently maintain local stiffness.

[0028] Compared to traditional high-pressure bushing seismic testing fixtures, this series of fixtures can be disassembled or stacked for use with bushings of different diameters and lengths, improving the interchangeability and versatility of the testing fixtures. Each fixture's top and bottom plates are reinforced with ribs welded around their perimeter, enhancing stability and saving welding production time and costs. This fixture can be disassembled into individual parts, each of which can be transported independently, making it easier to handle, lift, and transport compared to welded, one-piece fixtures.

Claims

1. A casing shock test tooling rack characterized by, Includes a base (1), a sleeve mounting plate (14), a first seismic test frame (16), and a second seismic test frame (17); The base (1) is fixed to the surface of the preset base by expansion screws; The first seismic test frame (16) includes a first base plate (3), a first reinforcing rib (4), a first support frame (5), a second reinforcing rib (6), and a first top plate (7); The second seismic test frame (17) includes a second base plate (8), a third reinforcing rib (10), a second support frame (11), a fourth reinforcing rib (12), and a second top plate (13).

2. The anti-vibration test tooling frame of claim 1, wherein, The first base plate (3) is installed vertically on the base along the axial direction by the first connecting bolt (2); The second base plate (8) is vertically installed on the first top plate (7) along the axial direction by the second connecting bolt (9); The sleeve mounting plate (14) is vertically installed on the second base plate (8) along the axial direction by the third connecting bolt (15).

3. The anti-shock test tooling fixture of claim 2, wherein, The bottom of the first support frame (5) is welded to the first base plate (3) and the top is welded to the first top plate (7); The bottom of the second support frame (11) is welded to the second base plate (8) and the top is welded to the second top plate (13).

4. The test fixture of claim 3, wherein: The first reinforcing rib (4) is welded laterally between the side wall of the first base plate (3) and the first support frame (5); The second reinforcing rib (6) is welded laterally between the side wall of the first top plate (7) and the first support frame (5); The third reinforcing rib (10) is welded between the second base plate (8) and the side wall of the second support frame (11); The fourth reinforcing rib (12) is welded between the second top plate (13) and the side wall of the second support frame (11).

5. The test fixture of claim 4, wherein: The support frame has a cylindrical structure or a non-cylindrical polyhedral structure.

6. The test fixture of claim 5, wherein: Both the top plate and the bottom plate have through holes at their centers for axial installation of the external sleeve core.

7. The sleeve shock resistance test tooling rack of claim 6, wherein, The base, top plate, and bottom plate have multiple bolt connection hole groups evenly distributed along their circumferential edges, and the center distance of each group of bolt connection holes is different.

8. The test fixture of claim 7, wherein: Both the bottom plate and the top plate have through holes at their centers for axially penetrating the core of the sleeve to be tested.

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