Vibration test tool of transformer and use method of vibration test tool

Abstract

The invention provides a transformer vibration test tool and a use method, the transformer vibration test tool comprises a vibration platform, the vibration platform is provided with an installation platform, the installation platform is symmetrically provided with two support frames, the ends of the same sides of the tops of the two support frames are connected with a connecting plate, the connecting plate is connected with a connecting piece, and the connecting piece is connected with the vibration platform. The top of a transformer is connected to the connecting piece, the transformer is located between the two supporting frames, one end of a flexible connecting piece is connected to the bottom of the transformer, and the other end of the flexible connecting piece is connected to the tops of the supporting frames. According to the test tool, accurate test and evaluation of the transformer in a simulated vibration environment are realized, and the accuracy and reliability of the transformer in a vibration test are ensured, so that the operation and maintenance cost and risk of the transformer are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of transformer testing equipment, and in particular to a transformer vibration testing tool and a use method thereof. Background Art

[0002] As one of the important directions for the development and utilization of renewable energy, offshore wind power has become a research hotspot for the development of global wind power. The development prospects of offshore wind power in my country are very broad. It plays a vital role in promoting the transformation of energy structure and undertaking the task of upgrading environmental protection. It is also an important part of the development of my country's strategic emerging industries, science and technology industries and marine economy.

[0003] Transformers used at sea may be subject to long-term vibration due to their special operating environment, causing varying degrees of overall displacement, tipping, or damage to structural parts such as bushings; fires, power outages, and other disasters may also occur. In order to ensure the safe and reliable operation of electrical equipment, higher requirements are placed on the vibration resistance of the transformer body and components, and vibration tests need to be performed on the entire transformer to meet the product's operating conditions.

[0004] At present, the bottom of the transformer is conventionally mounted directly on a vibration platform, and the vibration of the vibration platform provides vibration power for the vibration test of the transformer. Although this fixing method can simulate the vibration test, during the vibration process, the transformer is directly fixed to the vibration platform by bolts, and the vibration platform cannot make the transformer swing with a large amplitude, resulting in a large deviation between the transformer performance obtained in the test and the performance of the transformer after actual installation, which affects the evaluation of the transformer performance. Summary of the invention

[0005] In order to solve the problem that during the vibration test of the existing transformer, the transformer is directly fixed on the vibration platform, so that the swing amplitude of the transformer on the vibration platform is limited, resulting in a large deviation between the transformer performance obtained by the test and the performance in actual use, the present invention provides a transformer vibration test tool and a use method thereof.

[0006] To achieve the above object, the present invention provides the following technical solutions: The present invention proposes a vibration test tool for a transformer, comprising a vibration platform, on which a mounting platform is installed, on which two support frames are symmetrically installed, a connecting plate is connected to the same-side end heads of the tops of the two support frames, a connecting piece is connected to the connecting plate, the connecting piece is connected to the top of the transformer, the transformer is located between the two support frames, and one end of a flexible connector is connected to the bottom of the transformer, and the other end of the flexible connector is connected to the top of the support frame.

[0007] Preferably, the mounting platform is formed by a plurality of mounting plates fixed side by side.

[0008] Preferably, a fixed bottom plate is provided at the bottom of the mounting platform, and the fixed bottom plate is fixed to the vibration platform by bolts.

[0009] Preferably, an amplifier part is connected to the bottom of the fixed base plate, and the amplifier part includes a first mounting platform and a second mounting platform, the first mounting platform is installed on the vibration platform, a connecting platform is provided on the first mounting platform, a plurality of springs are provided on the connecting platform, the fixed base plate is installed on the top of the second mounting platform, a mounting groove is provided on the second mounting platform, the connecting platform is installed in the mounting groove, and one end of the spring is fixed to the inner wall of the mounting groove.

[0010] Preferably, the connecting member comprises a stabilizing frame, a connecting rod is mounted on the stabilizing frame, one end of the connecting rod away from the stabilizing frame is connected to the transformer, and a limiting cap is provided on the connecting rod at a position abutting against an inner wall of the transformer.

[0011] Preferably, the flexible connecting member is a hydraulic telescopic rod, one end of the hydraulic telescopic rod is rotatably connected to the top of the support frame, and the other end of the hydraulic telescopic rod is rotatably connected to the bottom of the transformer.

[0012] Preferably, the flexible connector includes a first threaded rod and a second threaded rod, an adjusting rod is connected between one end of the first threaded rod and one end of the second threaded rod, the other end of the first threaded rod is rotatably connected to the top of the support frame, and one end of the second threaded rod is rotatably connected to the bottom of the transformer.

[0013] Preferably, a second reinforcement plate is provided between the connecting plate and the supporting frame.

[0014] Preferably, a first reinforcement plate is arranged in the support frame.

[0015] The present invention provides a method for using a transformer vibration test tool, which is used to control the above-mentioned vibration test tool, and includes the following steps: Hang the transformer between two support frames, connect the top of the transformer to the connection plate through a connector; connect one end of a flexible connector to the top of the support frame, and connect the other end of the flexible connector to the bottom of the transformer; The vibration platform is started to perform a simulated vibration test on the transformer.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes a vibration test tool for a transformer. The tool uses a vibration platform to provide necessary vibration excitation to simulate the vibration environment that an offshore wind turbine may encounter during operation. The installation platform serves as the basic support of the tool to ensure the smooth progress of the entire test process. Two symmetrically installed support frames not only provide a stable support effect, but are also firmly connected to the top of the transformer through a connecting plate and a connecting piece, which effectively disperses the impact force during the vibration process and protects the structural integrity of the transformer. A flexible connector is used at the bottom of the transformer to connect it to the top of the support frame, which enhances the adaptability of the tool to transformer vibration, can absorb and alleviate vibration energy to a certain extent, and reduces the risk of damage to the transformer itself. The use of flexible connectors also enables the tool to more realistically simulate the actual operating state of the transformer in an offshore wind farm, thereby improving the accuracy and reliability of the test results.

[0017] Furthermore, the mounting platform in the tooling is formed by multiple mounting plates fixed side by side, which ensures the stability of the connection between the vibration platform and the transformer, and also improves the overall load-bearing capacity and anti-deformation ability of the tooling, so that the mounting platform can be flexibly adjusted in size and layout according to actual needs to adapt to the testing requirements of transformers of different models and specifications.

[0018] Furthermore, a fixed base plate is installed at the bottom of the mounting platform in the tooling, which increases the integrity of the mounting platform and effectively prevents the mounting platform from shaking or shifting due to vibration of the vibration platform, thereby ensuring the stability and safety of the transformer during the test.

[0019] Furthermore, the amplifier part in the tooling forms a vibration energy transmission and amplification system through the first mounting platform, the second mounting platform and the spring arranged on the connecting platform. When the vibration platform vibrates, the spring can absorb and store the vibration energy, and then transfer the energy to the second mounting platform and the fixed base plate through its elastic restoring force, and then transfer it to the transformer, thereby improving the efficiency of vibration transmission and enhancing the accuracy and reliability of vibration testing.

[0020] Furthermore, the flexible connector in the tooling is a hydraulic telescopic rod, which can flexibly adjust the length and angle according to the requirements of the vibration test, thereby ensuring the stability and safety of the transformer during the vibration process.

[0021] Furthermore, the flexible connector composed of the threaded rod and the adjusting rod in the tooling can realize the precise adjustment of the connection length, thereby meeting the testing requirements of transformers of different models and specifications. The threaded connection has high strength and reliability, and can withstand various stresses and impacts during the vibration test, thereby protecting the structural integrity of the transformer.

[0022] Furthermore, in the present tooling, the second reinforcement plate is arranged between the connecting plate and the support frame, which effectively enhances the connection strength between the connecting plate and the support frame and improves the overall stability of the tooling; the first reinforcement plate is arranged inside the support frame, which enhances the strength and rigidity of the support frame, so that it can better withstand the weight of the transformer and various forces during the vibration process, and also helps to improve the durability and reliability of the support frame and extend the service life of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a front view structural schematic diagram of a transformer vibration test tooling proposed by the present invention; Figure 2 A schematic side view of the structure of a transformer vibration test fixture proposed by the present invention; Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure at point A in the middle; Figure 4 for Figure 1 Schematic diagram of the cross-sectional structure at B in the middle; Figure 5 This is a schematic diagram of the connection structure between the support frame and the mounting platform in a transformer vibration test tooling proposed by the present invention; In the attached drawings: 1. vibration platform; 2. fixed base plate; 3. support frame; 4. transformer; 5. flexible connector; 6. mounting platform; 7. amplifier; 70. first mounting platform; 71. connecting platform; 72. elastic member; 73. ball; 74. second mounting platform; 75. fixing pin; 76. spring; 8. connecting plate; 9. connector; 90. connecting rod; 91. stabilizing frame; 92. limiting cap; 10. first reinforcement plate; 11. second reinforcement plate. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] See also Figure 1~Figure 5The present invention proposes a vibration test fixture for a transformer, comprising a vibration platform 1, an amplifier part 7 is installed on the top end surface of the vibration platform 1, the amplifier part 7 comprises a first mounting platform 70 and a second mounting platform 74, the first mounting platform 70 is fixedly installed on the top end surface of the vibration platform 1 by bolts, a connecting platform 71 is arranged on the upper end surface of the first mounting platform 70, the connecting platform 71 is annular, and the vertical cross-section of the connecting platform 71 is "T"-shaped, the bottom end head of the "T"-shaped is fixed on the first mounting platform 70, and the center of the first mounting platform 70 coincides with the center of the annular shape, a plurality of springs 76 are arranged at the position of the "T"-shaped head on the connecting platform 71, that is, a spring 76 is arranged on each end surface of the "T"-shaped head on the connecting platform 71, a bottom plate 2 is fixedly installed on the top end surface of the second mounting platform 74 by bolts, a mounting groove is arranged on the bottom end surface of the second mounting platform 74 at a position corresponding to the connecting platform 71, the connecting platform 71 is movably installed in the mounting groove, and one end of the spring 76 is fixed on the inner wall of the mounting groove, and the other end of the spring 76 is fixed to the connecting On the side end surface of the platform 71, a certain distance is formed between the side end surface of the connecting platform 71 and the inner side of the mounting groove by a spring 76. When the vibration platform 1 vibrates, the first mounting platform 70 is driven to vibrate. The first mounting platform 70 transmits the vibration to the second mounting platform 74 through the spring 76, and the vibration amplitude and frequency are amplified by the elastic effect of the spring 76 itself, so as to amplify the amplitude of the fixed base plate 2 installed on the second mounting platform 74. A vibration energy transmission and amplification system is formed by the first mounting platform 70, the second mounting platform 74 and the spring 76 arranged on the connecting platform. When the vibration platform vibrates, the spring 76 can absorb and store the vibration energy, and then transfer the energy to the second mounting platform 74 and the fixed base plate 2 through its elastic restoring force, and then transfer it to the transformer 4. The elastic restoring force of the spring 76 can also make the vibration process more stable and continuous, which is helpful to more accurately measure and record the vibration response data of the transformer, improve the efficiency of vibration transmission, and enhance the accuracy and reliability of vibration testing.

[0031] See also Figure 1~Figure 5The top end of the fixed base plate 2 is fixedly connected with a mounting platform 6 by bolts. The mounting platform 6 is formed by a plurality of mounting plates fixed side by side to form a whole. Two support frames 3 are symmetrically installed on the upper end surface of the mounting platform 6. One side of the support frame 3 is aligned with the edge line of the mounting platform 6. A connecting plate 8 is connected to the end on the same side of the top of the two support frames 3. The ends on the same side of the two support frames 3 are connected and fixed by the connecting plate 8 to increase the stability between the two support frames 3. A connecting piece 9 is installed on the side of the connecting plate 8 at a position corresponding to the opening on the top of the transformer 4. The connecting piece 9 includes a stabilizing frame 91. The stabilizing frame 91 is installed on the inner end surface of the connecting plate. The center of the stabilizing frame 91 A connecting rod 90 is installed horizontally at the position, one end of the connecting rod 90 passes through a stabilizing frame 91 and is fixed on the inner end face of the connecting plate 8, the other end of the connecting rod 90 (the end away from the stabilizing frame 91) is passed through the opening at the top of the transformer 4, and a limiting cap 92 is provided on the connecting rod 90 at a position that fits the inner wall of the transformer 4. The transformer 4 is fixed on the connecting rod 90 by the limiting cap 92 to prevent the transformer 4 from sliding off the connecting rod 90. After the connection, the transformer 4 is located between the two support frames 3, and the length direction of the transformer 4 is parallel to the support frame 3. One end of a flexible connector 5 is rotatably connected to the bottom of the transformer 4, and the other end of the flexible connector 5 is connected to the top of the support frame 3.

[0032] In this embodiment, the flexible connecting member 5 is a hydraulic telescopic rod, one end of which is rotatably connected to the top of the support frame 3, and the other end of the hydraulic telescopic rod is rotatably connected to the bottom of the transformer 4. A hydraulic pump and a hydraulic oil tank are connected to the hydraulic telescopic rod, and the hydraulic pump and the hydraulic oil tank are installed on the side end surface of the mounting platform 6. The hydraulic telescopic rod is operated by the hydraulic pump and the hydraulic oil tank to assist in fixing the bottom of the transformer 4. The length and angle can be flexibly adjusted according to the requirements of the vibration test, thereby ensuring the stability and safety of the transformer 4 during the vibration process.

[0033] Preferably, the flexible connector 5 includes a first threaded rod and a second threaded rod, an adjusting rod is connected between one end of the first threaded rod and the second threaded rod, the other end of the first threaded rod is rotatably connected to the top of the support frame 3, and one end of the second threaded rod is rotatably connected to the bottom of the transformer 4. By rotating the adjusting rod, the distance between the relative ends of the first threaded rod and the second threaded rod is adjusted, so that the transformer 4 can be stably fixed on this test fixture.

[0034] See also Figure 2 A second reinforcement plate 11 is arranged between the connecting plate 8 and the support frame 3. The second reinforcement plate 11 increases the stability of the connection between the connecting plate 8 and the support frame 3, thereby increasing the overall stiffness of the test fixture, dispersing the stress and impact force during the vibration process, and protecting the connecting plate 8 and the support frame 3 from damage.

[0035] See also Figure 1 and Figure 4 , a first reinforcing plate 10 is provided in the support frame 3, two first reinforcing plates 10 are provided, and one end of the two first reinforcing plates 10 is fixed in the support frame 3 at the center position of the bottom end surface thereof, and the other end of the first reinforcing plate 10 is fixed in the support frame 3 at the side position of the top end surface thereof. The support frame 3 is reinforced by the first reinforcing plate 10, and the stability of the support frame 3 is increased, so that it can better bear the weight of the transformer 4 and various forces during the vibration process, which helps to improve the durability and reliability of the support frame 3 and extend the service life of the tooling. .

[0036] The present invention also proposes a method for using a transformer vibration test tool, which is used to control the above-mentioned vibration test tool, comprising the following steps: Hang the transformer between the two support frames 3, align the opening on the transformer 3 with the connecting rod 90 in the connector, extend the connecting rod 90 through the opening to the inside of the transformer 3, and install the limiting cap 92 on the connecting rod 90 at the position where it fits the inner wall of the transformer 3; connect one end of the flexible connector 5 to the top of the support frame, and connect the other end of the flexible connector to the bottom of the transformer; Start the vibration platform and conduct a simulated vibration test on the transformer.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0038] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A transformer vibration test tool, characterized in that: The invention comprises a vibration platform (1), wherein a mounting platform (6) is mounted on the vibration platform (1), and two support frames (3) are symmetrically mounted on the mounting platform (6), a connecting plate (8) is connected to the same-side end of the top of the two support frames (3), a connecting member (9) is connected to the connecting plate (8), and the connecting member (9) is connected to the top of a transformer (4), the transformer (4) is located between the two support frames (3), and one end of a flexible connecting member (5) is connected to the bottom of the transformer (4), and the other end of the flexible connecting member (5) is connected to the top of the support frame (3).

2. A transformer vibration test fixture according to claim 1, characterized in that: The mounting platform (6) is formed by a plurality of mounting plates fixed side by side.

3. A transformer vibration test tool according to claim 2, characterized in that: A fixed base plate (2) is provided at the bottom of the mounting platform (6), and the fixed base plate (2) is fixed to the vibration platform (1) by means of bolts.

4. A transformer vibration test fixture according to claim 3, characterized in that: The bottom of the fixed base plate (2) is connected to an amplifier part (7), the amplifier part (7) comprising a first mounting platform (70) and a second mounting platform (74), the first mounting platform (70) being mounted on the vibration platform (1), a connecting platform (71) being provided on the first mounting platform (70), a plurality of springs (76) being provided on the connecting platform (71), the fixed base plate (2) being mounted on the top of the second mounting platform (74), a mounting groove being provided on the second mounting platform (74), the connecting platform (71) being mounted in the mounting groove, and one end of the spring (76) being fixed to the inner wall of the mounting groove.

5. The transformer vibration test fixture according to claim 1, characterized in that: The connecting member (9) comprises a stabilizing frame (91), a connecting rod (90) being mounted on the stabilizing frame (91), an end of the connecting rod (90) away from the stabilizing frame (91) being connected to the transformer (4), and a limiting cap (92) being provided on the connecting rod (90) at a position abutting against an inner wall of the transformer (4).

6. The transformer vibration test fixture according to claim 1, characterized in that: The flexible connecting member (5) is a hydraulic telescopic rod, one end of which is rotatably connected to the top of the support frame (3), and the other end of which is rotatably connected to the bottom of the transformer (4).

7. The transformer vibration test fixture according to claim 1, characterized in that: The flexible connector (5) comprises a first threaded rod and a second threaded rod, an adjustment rod being connected between one end of the first threaded rod and one end of the second threaded rod, the other end of the first threaded rod being rotatably connected to the top of the support frame (3), and one end of the second threaded rod being rotatably connected to the bottom of the transformer (4).

8. The transformer vibration test fixture according to claim 1, characterized in that: A second reinforcement plate (11) is provided between the connection plate (8) and the support frame (3).

9. The transformer vibration test fixture according to claim 1, characterized in that: A first reinforcement plate (10) is arranged inside the support frame (3).

10. A method for using a transformer vibration test tool, used to control the vibration test tool according to any one of claims 1 to 9, characterized in that: The following steps are involved: Hang the transformer between two support frames, connect the top of the transformer to the connection plate through a connector; connect one end of a flexible connector to the top of the support frame, and connect the other end of the flexible connector to the bottom of the transformer; The vibration platform is started to perform a simulated vibration test on the transformer.

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