Vibration and noise reduction test device and vibration and noise reduction method for transformer reactor

Abstract

The invention discloses a transformer reactor vibration and noise reduction test device and vibration and noise reduction method, and the device comprises an oil tank housing which comprises a tank cover, a tank wall and a tank bottom which are detachably connected; the transformer body is arranged in the oil tank shell and comprises an iron core and a coil, and an iron core column of the iron core is sleeved with the coil; the transformer body vibration isolation device is connected between the transformer body and the box bottom, and an auxiliary jacking piece is arranged on the transformer body; the tank wall sound absorption and insulation device is arranged on the surface of the oil tank wall. After the box cover and the box wall are opened, the clamping force of the iron core and the pressing force of the coil can be adjusted, the vibration isolation material of the device body can be replaced, and operation is convenient. According to the invention, corresponding control parameters can be conveniently tested and verified, so that a reference and a basis are provided for a vibration and noise reduction scheme of the transformer reactor.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and more specifically to a vibration reduction and noise reduction test device for a transformer reactor and a vibration reduction and noise reduction method. Background Art

[0002] Noise performance is one of the key parameters of power equipment such as transformers and reactors. Due to its structural characteristics, the vibration noise of shunt reactors is more obvious than that of transformers. There are many factors that affect the vibration noise of transformers and reactors, and it is difficult to accurately estimate the noise value of products. In the prior art, the scheme of reducing noise is studied by taking actual products as test objects, but it is difficult to conduct experimental verification for the scheme of reducing noise of actual products.

[0003] Therefore, how to conveniently conduct test verification so as to provide reference and basis for the vibration reduction and noise reduction scheme of transformer reactor has become a technical problem to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a vibration reduction and noise reduction test device for transformer reactors to facilitate test verification, thereby providing a reference and basis for vibration reduction and noise reduction schemes for transformer reactors.

[0005] Another object of the present invention is to provide a vibration reduction and noise reduction method using the above-mentioned transformer reactor vibration reduction and noise reduction test device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A transformer reactor vibration reduction and noise reduction test device, comprising:

[0008] The oil tank shell comprises a detachably connected tank cover, a tank wall and a tank bottom;

[0009] The body is arranged in the oil tank shell, and comprises an iron core and a coil, wherein the coil is sleeved on the iron core column of the iron core;

[0010] The device body vibration isolation device is connected between the device body and the bottom of the box, and the device body is provided with an auxiliary lifting member;

[0011] The box wall sound absorption and insulation device is detachably arranged on the box wall of the oil tank.

[0012] Optionally, in the above-mentioned transformer reactor vibration reduction and noise reduction test device, the auxiliary lifting member is arranged on a clamp at the lower end of the device body;

[0013] The device body vibration isolation device comprises a vibration isolation material piece, and the vibration isolation material piece is arranged between the device body and the box bottom.

[0014] Optionally, in the above-mentioned transformer reactor vibration reduction and noise reduction test device, the box wall sound absorption and insulation device is arranged on the surface of the box wall, and includes a sound absorption and insulation material piece;

[0015] Optionally, in the above-mentioned transformer reactor vibration reduction and noise reduction test device, the box wall sound absorption and insulation body includes a frame device and a sound absorption and insulation material piece, the frame device has a accommodating cavity, and the sound absorption and insulation material piece is arranged in the accommodating cavity;

[0016] The upper side and the lower side of the frame device are both provided with extended edges. The upper extended edge is fastened to the box cover through fasteners, and the lower extended edge is fastened to the box bottom through fasteners.

[0017] The vibration and noise reduction test device for transformer reactors provided by the present invention designs the oil tank shell into three parts: a detachably connected box cover, a box wall and a box bottom, so as to facilitate the adjustment and replacement of internal components, thereby facilitating the testing of control parameters related to vibration and noise, and then obtaining the optimal vibration and noise performance of the corresponding control parameters. The vibration and noise reduction components, such as the vibration isolation device for the body and the sound-absorbing and insulating device for the box wall, can be replaced to facilitate the testing of better sound insulation materials. The present invention can facilitate the test and verification of the corresponding control parameters, thereby providing a reference and basis for the vibration and noise reduction scheme of the transformer reactor.

[0018] A method for reducing vibration and noise of a transformer reactor, using any of the above transformer reactor vibration and noise reduction test devices to conduct tests to obtain target parameters with better vibration and noise performance, comprising the steps of:

[0019] Determine the control parameters, and determine the control parameters related to vibration and noise of the transformer reactor vibration reduction and noise reduction test device;

[0020] Determine the target parameter, and adjust the parameters of each of the control parameters until the target parameter of the control parameter is obtained, and the target parameter of the control parameter has better vibration and noise performance than other parameters.

[0021] Optionally, in the above transformer reactor vibration and noise reduction method, the control parameter includes the core clamping force;

[0022] The iron core includes an iron core group consisting of a plurality of iron cores arranged in a stacked manner, and clamps arranged on both sides of the iron core group, and the clamps located on both sides of the iron core group are tightened by tension screws;

[0023] When the control parameter is the clamping force of the transformer reactor core, the target parameter determination includes multiple tests of the vibration noise value, and the clamping force output by the nut of the pull screw corresponding to each vibration noise value test is different to obtain the clamping force corresponding to the optimal vibration noise value.

[0024] Optionally, in the above transformer reactor vibration reduction and noise reduction method, when the control parameter is the transformer reactor core clamping force, the determining of the target parameter specifically includes:

[0025] Use the torque wrench to adjust the tightening degree of the nut of the pull screw and output the corresponding clamping force. ,in, is the clamping force, The torque displayed by the torque wrench during tightening. is the length of the wrench arm;

[0026] according to , calculate the pressure per unit area, where is the pressure per unit area, is the cross-sectional area, To design the initial pressure value, the vibration noise value is tested every time the pressure is adjusted by 0.01 MPa. The effects of different clamping forces on the vibration noise value are compared to obtain the clamping force corresponding to the optimal vibration noise value.

[0027] Optionally, in the above transformer reactor vibration reduction and noise reduction method, the control parameter includes the coil pressing force, and the upper clamp and the lower clamp of the body are both provided with adjustment bolts, and the adjustment bolts are used to adjust the coil pressing force;

[0028] When the control parameter is the coil clamping force, the target parameter determination includes multiple tests of the vibration noise value, and the clamping force output by the corresponding adjusting bolt during each vibration noise value test is different to obtain the clamping force corresponding to the optimal vibration noise value.

[0029] Optionally, in the above transformer reactor vibration reduction and noise reduction method, when the control parameter is the coil pressing force, the determining of the target parameter specifically includes:

[0030] Use a torque wrench to adjust the tightening degree of the adjusting bolt to output the coil compression force. ,in, is the coil pressing force, The torque displayed by the wrench when the coil is tightened. The coil clamping force is the length of the torque wrench arm. The vibration noise value is tested every time the coil clamping force is adjusted by 1%-3%. The effects of different coil clamping forces on the vibration noise value are compared to obtain the coil clamping force corresponding to the optimal vibration noise value.

[0031] Optionally, in the above transformer reactor vibration reduction and noise reduction method, the control parameter includes a body vibration isolation device, and the body vibration isolation device includes a vibration isolation material piece;

[0032] When the control parameter is a vibration isolation device for a device body, the determination of the target parameter specifically includes: replacing different vibration isolation material pieces, and testing the vibration noise values ​​respectively to obtain the vibration isolation material piece corresponding to the optimal vibration noise value.

[0033] Optionally, in the above-mentioned transformer reactor vibration and noise reduction method, when the control parameter is the device body vibration isolation device, the determination of the target parameter also includes: testing the vibration noise value of each vibration isolation material piece under different pressing forces to obtain the pressing force corresponding to the optimal vibration noise value of the vibration isolation material piece.

[0034] Optionally, in the above transformer reactor vibration reduction and noise reduction method, the control parameter includes a sound absorbing and insulating material. When the control parameter is the sound absorbing and insulating material, the determining of the target parameter specifically includes:

[0035] Replace different box wall sound-absorbing and insulation materials, and test the vibration and noise values ​​respectively to obtain the box wall sound-absorbing and insulation material corresponding to the optimal vibration and noise value;

[0036] The transformer reactor vibration reduction and noise reduction method provided by the present invention uses the above-mentioned transformer reactor vibration reduction and noise reduction test device for testing, and therefore has all the technical effects of the above-mentioned transformer reactor vibration reduction and noise reduction test device, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0038] Figure 1 It is a structural schematic diagram of a transformer vibration reduction and noise reduction test device disclosed in an embodiment of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of a clamp clamping an iron core sheet disclosed in an embodiment of the present invention;

[0040] Figure 3 It is a schematic diagram of the structure of coil compression disclosed in an embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of the installation structure of the body vibration isolation device disclosed in an embodiment of the present invention;

[0042] Figure 5 It is a schematic diagram of the installation of the box wall sound absorption and insulation device disclosed in an embodiment of the present invention;

[0043] Figure 6 It is a side view of the box wall sound absorption and insulation device disclosed in an embodiment of the present invention.

[0044] The meanings of the reference numerals in the figures are as follows:

[0045] 101-transformer oil tank shell; 102-transformer core; 103-transformer coil; 104-transformer body vibration isolation device; 105-transformer box wall sound absorption and insulation device;

[0046] 201-iron core piece; 202-pull screw; 203-clamp;

[0047] 301-coil; 302-end insulator; 303-adjusting bolt;

[0048] 401- auxiliary lifting piece; 402- vibration isolation material piece;

[0049] 501-box wall sound-absorbing and insulating body; 5011-sound-absorbing and insulating material piece; 5012-frame device; 502-fastener. DETAILED DESCRIPTION

[0050] The core of the present invention is to provide a transformer reactor vibration reduction and noise reduction test device to reduce cost, weight and space occupation;

[0051] Another core of the present invention is to provide a vibration reduction and noise reduction method using the above-mentioned transformer reactor vibration reduction and noise reduction test device.

[0052] The following embodiments are described with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention contents described in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary as solutions to the inventions described in the claims. It should be noted that, for ease of description, only the parts related to the inventions are shown in the accompanying drawings. The embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0053] The embodiment of the invention discloses a transformer reactor vibration reduction and noise reduction test device, which comprises an oil tank shell, a device body, a device body vibration isolation device and a box wall sound absorption and insulation device.

[0054] Figure 1 The following is a vibration reduction and noise reduction test device for transformers. For the structure of the vibration reduction and noise reduction test device for reactors, please refer to Figure 1 The vibration and noise reduction test device for transformers is shown in Figure 1 For example, the vibration reduction and noise reduction test device for the transformer includes a transformer body, a transformer oil tank shell 101, a transformer body vibration isolation device 104 and a transformer box wall sound absorption and insulation device 105. The transformer body includes a transformer core 102 and a transformer coil 103.

[0055] The oil tank shell serves as the outer shell of the transformer / reactor and protects the internal structure. The control parameters of the transformer / reactor related to vibration and noise, for example, common control parameters include core clamping force, coil pressing force, vibration isolation device for the body, sound-absorbing and insulating materials for the box wall, etc. Most of these control parameters need to be completed inside the oil tank shell. In order to facilitate the above operations, the oil tank shell is designed as a split structure, that is, the oil tank shell includes a detachable box cover, box wall and box bottom, and the three parts can be fastened and connected with bolts. After opening the box cover and box wall, the core clamping force and coil pressing force can be adjusted, and the vibration isolation material of the body can be replaced, which is convenient for operation.

[0056] The vibration isolation device of the device body is connected between the device body and the bottom of the box, so as to reduce the vibration of the device body. An auxiliary lifting member 401 (such as Figure 4 The auxiliary lifting member 401 can cooperate with a lifting device such as a jack to assist in lifting the device body, thereby replacing the vibration isolation material of the device body vibration isolation device, so as to facilitate the test and select the vibration reduction material with better vibration reduction and noise reduction effect.

[0057] The tank wall sound absorption and insulation device is detachably arranged on the tank wall, and adopts a quick-release structure for easy disassembly and assembly.

[0058] The transformer reactor vibration reduction and noise reduction test device provided by the present invention designs the oil tank shell into three parts: a detachably connected box cover, a box wall and a box bottom, so as to facilitate the adjustment and replacement of internal components, thereby facilitating the testing of control parameters related to vibration and noise, and then obtaining the optimal vibration and noise performance of the corresponding control parameters. The vibration reduction and noise reduction components, such as the vibration isolation device of the body and the sound absorption and insulation device of the box wall, are conveniently replaced to test the better sound insulation material.

[0059] like Figure 4 As shown, the auxiliary lifting member 401 is arranged on the clamp at the lower end of the device body. The auxiliary lifting member 401 can be a support plate welded on the clamp at the lower end of the device body, so that the jack can apply the lifting force to the support plate to lift the device body and increase the distance between the device body and the bottom of the box.

[0060] The vibration isolation device of the device body includes a vibration isolation material piece 402, and the vibration isolation material piece 402 is arranged between the device body and the bottom of the box. The vibration isolation material piece 402 has different noise reduction effects depending on the vibration isolation material. After the device body is lifted up, the vibration isolation material piece 402 can be pulled out to replace the vibration isolation material piece 402 of other materials and sizes. That is, in this embodiment, for the purpose of rapid replacement, the vibration isolation material piece 402 does not need to be fixed, but only needs to be pressed against the bottom of the box through the device body.

[0061] like Figure 5As shown, in a specific embodiment of the present invention, the box wall sound absorption and insulation device includes a box wall sound absorption and insulation body 501 and a fastener 502 for fixing the box wall sound absorption and insulation body 501 to the box cover and the box bottom, and the box wall sound absorption and insulation body 501 is installed close to the box wall of the oil tank. In order to achieve rapid disassembly and assembly, the fastener 502 can be a quick-release bolt. By rotating the fastener 502, the box wall sound absorption and insulation body 501 on the box wall can be disassembled and assembled, and the box wall sound absorption and insulation body 501 of other materials can be quickly replaced to test the noise reduction ability of the box wall sound absorption and insulation body 501 of each material, so that the material with better noise reduction effect can be selected to make the box wall sound absorption and insulation body 501.

[0062] like Figure 6 As shown, further, the box wall sound absorbing and insulating body 501 includes a frame device 5012 and a sound absorbing and insulating material piece 5011, the frame device 5012 has a receiving cavity, and the sound absorbing and insulating material piece 5011 is arranged in the receiving cavity. Since the box wall sound absorbing and insulating body 501 is arranged on the box wall, it is necessary to wrap the frame device 5012 outside the sound absorbing and insulating material piece 5011 for its sound insulation function to protect and fix the sound absorbing and insulating material piece 5011.

[0063] The upper and lower sides of the frame device 5012 both have extended edges, and the extended edges are provided with fastening holes for fasteners 502 to pass through. The upper extended edge is fastened to the box cover by fasteners 502, and the lower extended edge is fastened to the box bottom by fasteners 502.

[0064] The transformer reactor vibration reduction and noise reduction method disclosed in the embodiment of the present invention is tested using the transformer reactor vibration reduction and noise reduction test device disclosed in the above embodiment. The transformer reactor vibration reduction and noise reduction method includes a control parameter determination step and a target parameter determination step.

[0065] Among them, the step of determining the control parameter includes determining the control parameter related to the vibration noise of the transformer reactor vibration reduction and noise reduction test device. That is, it is necessary to first determine the factors related to the vibration noise in the transformer reactor vibration reduction and noise reduction test device, and use the factors as control parameters, that is, use the factors as control parameters that can be changed or adjusted to improve the noise conditions. It should be noted that different transformer reactors may have different control parameters, and the same transformer reactor may also select different control parameters based on different needs.

[0066] The step of determining the target parameter includes adjusting the control parameter, adjusting the parameter of each control parameter until the target parameter of the control parameter is obtained, and the target parameter of the control parameter has better vibration and noise performance than other parameters. The control parameter is adjusted in different ways depending on the control parameter. The adjustment method can be change or replacement, that is, the control parameter can be adjusted by replacing a component, or by changing a parameter.

[0067] The transformer reactor vibration reduction and noise reduction method disclosed in this embodiment can conduct multiple tests on the same control parameter, and the parameters targeted by each test need to be adjusted to measure the vibration and noise data under different parameters of the same control parameter, and select the target parameter with the best vibration and noise performance based on the tested vibration and noise data. When there are multiple control parameters, each control parameter should be tested in turn to obtain the target parameters corresponding to each control parameter in turn.

[0068] like Figure 2 As shown, the core may include a core assembly consisting of a plurality of stacked core pieces 201, and clamps 203 arranged on both sides of the core assembly. The clamps 203 located on both sides of the core assembly are tightened by pull screws 202, and the core clamping force can be adjusted by rotating the nuts at both ends of the pull screws 202.

[0069] When the control parameter is the core clamping force of the transformer / reactor, determining the target parameter includes multiple tests of the vibration noise value, and the clamping force output by the nut of the pull screw 202 corresponding to each vibration noise value test is different to obtain the clamping force corresponding to the optimal vibration noise value.

[0070] According to the preset initial value of the clamping force and the adjustment amplitude each time (for any two adjacent vibration noise value tests, the number of rotations of the nut of the pull screw 202 can be equal, that is, the adjustment amplitude each time is equal), multiple tests are performed to obtain the vibration noise of the transformer inductor at different core clamping forces, and obtain the core clamping force under the optimal vibration noise condition, that is, obtain the clamping force output by the nut under the optimal vibration noise condition.

[0071] Furthermore, when the control parameter is the core clamping force, determining the target parameter specifically includes:

[0072] The tightening degree of the nut of the pull screw 202 is adjusted by a torque wrench to output the corresponding clamping force. The tightening degree of the nut is directly related to the clamping force. By tightening the nut with a torque wrench, the corresponding torque can be measured. The core clamping force can be calculated by the formula: Calculated, among which, is the core clamping force, The torque displayed by the torque wrench during tightening. is the length of the wrench arm.

[0073] according to , calculate the pressure per unit area, where is the pressure per unit area, is the cross-sectional area, To design the initial pressure value, the vibration noise value is tested every time the pressure is adjusted by 0.01 MPa. The effects of different clamping forces on the vibration noise value are compared to obtain the clamping force corresponding to the optimal vibration noise value.

[0074] In a specific embodiment of the present invention, the control parameter may also include the coil pressing force, such as Figure 3 As shown, the upper and lower clamps of the body are provided with adjusting bolts 303, and the adjusting bolts 303 are used to adjust the pressing force of the coil 301. The upper and lower ends of the coil 301 are provided with end insulating pieces 302. By rotating the adjusting bolts 303, the adjusting bolts 303 can press against the end insulating pieces 302, and then the coil pressing force can be changed by rotating the adjusting bolts 303.

[0075] When the control parameter is the coil clamping force, determining the target parameter includes testing the vibration noise value multiple times, and the clamping force output by the corresponding adjustment bolt 303 during each vibration noise value test is different to obtain the clamping force corresponding to the optimal vibration noise value.

[0076] According to the preset initial value of the clamping force and the adjustment amplitude each time (for any two adjacent vibration noise value tests, the number of rotations of the adjusting bolt 303 can be equal, that is, the adjustment amplitude each time is equal), multiple tests are performed to obtain the vibration noise of the transformer inductor at different coil clamping forces, and obtain the coil clamping force under the optimal vibration noise condition.

[0077] Furthermore, when the control parameter is the coil pressing force, determining the target parameter specifically includes:

[0078] The tightening degree of the adjusting bolt 303 is adjusted by a torque wrench to output the coil clamping force. The tightening degree of the adjusting bolt 303 is directly related to the coil clamping force. By tightening the adjusting bolt 303 with a torque wrench, the corresponding torque can be measured. The coil clamping force can be obtained by the formula: Get, where is the coil pressing force, The torque displayed by the torque wrench when the coil is tightened. is the length of the torque wrench arm. The coil clamping force can be set to a certain value first, and then adjusted by 20% up and down based on the set clamping force. It should be noted that the set clamping force should be reasonably set according to the actual situation, and can be designed to other ranges based on the set clamping force by 20% up and down. The vibration noise value is tested every time the coil clamping force is adjusted by 1%-3% (for example, 2%), and the effects of different coil clamping forces on the vibration noise value are compared to obtain the coil clamping force corresponding to the optimal vibration noise value.

[0079] In a specific embodiment of the present invention, the control parameter may also include a body vibration isolation device, that is, the body vibration isolation device may also be used as one of the test indicators. Figure 4 As shown, the vibration isolation device of the device body includes a vibration isolation material piece 402. The vibration isolation material piece 402 can affect the vibration isolation and noise reduction effect. Therefore, when different vibration isolation material pieces 402 are used, the vibration noise output by the transformer reactor is different. Therefore, the vibration isolation material piece 402 with lower vibration noise can be found through experiments.

[0080] When the control parameter is the vibration isolation device of the device body, determining the target parameter specifically includes: replacing different vibration isolation material pieces 402, and testing the vibration noise values ​​respectively to obtain the vibration isolation material piece 402 corresponding to the optimal vibration noise value.

[0081] The vibration isolation device of the device body is placed between the device body and the bottom of the box. The laying method and size are obtained from the design plan. The clamp at the lower end of the device body is set with a jack lifting position. When the vibration isolation material piece 402 is replaced, the device body is lifted by a jack (i.e., the auxiliary lifting piece 401) (i.e., lifted at the position of the auxiliary lifting piece 401), the vibration isolation material piece 402 is taken out and replaced with a new vibration isolation material piece 402, and the influence of different materials on the vibration noise of the transformer reactor is tested to obtain the optimal vibration isolation material.

[0082] Furthermore, when the control parameter is a body vibration isolation device, determining the target parameter also includes: testing the vibration noise value of each vibration isolation material piece 402 under different pressing forces to obtain the pressing force corresponding to the optimal vibration noise value of the vibration isolation material piece 402 .

[0083] Specifically, the area of ​​the vibration isolation material 403 can be adjusted. , control the compressive force on the vibration isolation material 403 .

[0084]

[0085] in, is the weight of the device, is the area of ​​the vibration isolation material piece 403;

[0086]

[0087] in, is the initial pressing force of the vibration isolation material piece 403, n is the number of tests after the first test of the same vibration isolation material piece 403, You can take 0.2Mpa, The pressure range can be 0.2MPa~1MPa, that is, the test starts from 0.2MPa, and each test increases by 0.1MPa until the clamping force is increased to 1MPa, and different vibration isolation materials 403 and the influence of the pressure on the vibration isolation material 403 on the noise of the power equipment are tested to obtain the optimal vibration isolation material 403 and the optimal clamping force of the material.

[0088] In a specific embodiment of the present invention, the control parameters may also include box wall sound-absorbing and insulating materials, that is, the box wall sound-absorbing and insulating device can also affect the level of the vibration noise value. Therefore, when different box wall sound-absorbing and insulating devices are used, the vibration noise output by the transformer reactor is different. Therefore, a box wall sound-absorbing and insulating device with lower vibration noise can be found through experiments.

[0089] When the control parameter is the sound-absorbing and insulating material of the box wall, the target parameters to be determined specifically include:

[0090] Replace different box wall sound-absorbing and insulation materials, and test the vibration and noise values ​​respectively to obtain the box wall sound-absorbing and insulation material corresponding to the optimal vibration and noise value;

[0091] like Figure 5 and Figure 6 As shown, the box wall sound absorbing and insulating device is installed close to the box wall surface, and the box wall sound absorbing and insulating device includes a box wall sound absorbing and insulating body 501 and a fastener 502 for fixing the box wall sound absorbing and insulating body 501 to the box cover and the box bottom. The box wall sound absorbing and insulating body 501 includes a frame device 5012 and a sound absorbing and insulating material piece 5011. When replacing the box wall sound absorbing and insulating device, unscrew the fastener 502, remove the frame device 5012, take out the sound absorbing and insulating material piece 5011 filled inside, and replace it with a new sound absorbing and insulating material piece 5011. Each time the sound absorbing and insulating material piece 5011 is replaced, a noise test is performed to evaluate the noise reduction effect under different box wall sound absorbing and insulating materials, and obtain the sound absorbing and insulating material under the optimal noise condition.

[0092] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0093] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0094] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0095] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A transformer reactor vibration reduction and noise reduction test device, characterized in that: include: A fuel tank housing, the fuel tank housing comprising a detachably connected tank cover, a tank wall and a tank bottom; The body is arranged in the oil tank shell, and comprises an iron core and a coil, wherein the coil is sleeved on the iron core column of the iron core; A device body vibration isolation device is arranged between the device body and the box bottom, and an auxiliary lifting member (401) is arranged on the device body; The box wall sound absorption and insulation device is detachably arranged on the box wall.

2. The transformer reactor vibration reduction and noise reduction test device according to claim 1, characterized in that: The auxiliary lifting member (401) is arranged on a clamp at the lower end of the body.

3. The transformer reactor vibration reduction and noise reduction test device according to claim 2, characterized in that: The box wall sound absorption and insulation device comprises a sound absorption and insulation body (501) and fasteners (502) for fixing the sound absorption and insulation body (501) to the box cover and the box bottom, and the sound absorption and insulation body (501) is attached to the box wall.

4. A method for reducing vibration and noise of a transformer reactor, characterized in that: The test device for vibration and noise reduction of transformer reactor according to any one of claims 1 to 3 is used to conduct the test, and the target parameters with better vibration and noise performance are obtained, which includes the steps of: Determine the control parameters, and determine the control parameters related to vibration and noise of the transformer reactor vibration reduction and noise reduction test device; Determine the target parameter, and adjust the parameters of each of the control parameters until the target parameter of the control parameter is obtained, and the target parameter of the control parameter has better vibration and noise performance than other parameters.

5. The method for reducing vibration and noise of transformer reactor according to claim 4, characterized in that: The iron core comprises an iron core group consisting of a plurality of iron core pieces (201) arranged in a stacked manner, and clamps (203) arranged on both sides of the iron core group, wherein the clamps (203) located on both sides of the iron core group are tightened by tensioning screws (202); When the control parameter is the core clamping force, the determination of the target parameter specifically includes: The tightening degree of the nut of the pull screw (202) is adjusted by a torque wrench to output a corresponding clamping force. ,in, is the clamping force, The torque displayed by the torque wrench during tightening. is the length of the wrench arm; according to , calculate the pressure per unit area, where is the pressure per unit area, is the cross-sectional area, The initial value of the design pressure is set, and the vibration noise value is tested every time the pressure is adjusted up and down by 0.01 MPa. The effects of different clamping forces on the vibration noise value are compared to obtain the clamping force corresponding to the optimal vibration noise value.

6. The method for reducing vibration and noise of transformer reactor according to claim 4, characterized in that: The control parameter includes the coil pressing force, and the upper clamp and the lower clamp of the device body are both provided with an adjusting bolt (303), and the adjusting bolt (303) is used to adjust the coil pressing force; When the control parameter is the coil clamping force, the target parameter determination includes testing the vibration noise value multiple times, and the clamping force output by the adjusting bolt (303) corresponding to each vibration noise value test is different, so as to obtain the clamping force corresponding to the optimal vibration noise value.

7. The method for reducing vibration and noise of a transformer reactor according to claim 6, characterized in that: When the control parameter is the coil pressing force, the determination of the target parameter specifically includes: The tightening degree of the adjusting bolt (303) is adjusted by a torque wrench to output the coil pressing force. ,in, is the coil pressing force, The torque displayed by the wrench when the coil is tightened. The coil clamping force is the length of the torque wrench arm. The vibration noise value is tested every time the coil clamping force is adjusted by 1%-3%. The effects of different coil clamping forces on the vibration noise value are compared to obtain the coil clamping force corresponding to the optimal vibration noise value.

8. The method for reducing vibration and noise of transformer reactor according to claim 4, characterized in that: The control parameter includes a device body vibration isolation device, and the device body vibration isolation device includes a vibration isolation material piece (402); When the control parameter is a body vibration isolation device, determining the target parameter specifically includes: replacing different vibration isolation material pieces (402), and testing the vibration noise values ​​respectively, so as to obtain the vibration isolation material piece (402) corresponding to the optimal vibration noise value.

9. The method for reducing vibration and noise of a transformer reactor according to claim 8, characterized in that: When the control parameter is a body vibration isolation device, determining the target parameter further comprises: testing the vibration noise value of each vibration isolation material piece (402) under different pressing forces, so as to obtain the pressing force corresponding to the optimal vibration noise value of the vibration isolation material piece (402).

10. The method for reducing vibration and noise of transformer reactor according to claim 4, characterized in that: The control parameter includes the box wall sound absorbing and insulating material. When the control parameter is the box wall sound absorbing and insulating material, the determination of the target parameter specifically includes: Different box wall sound absorbing and insulating materials of the box wall sound absorbing and insulating device are replaced, and the vibration noise values ​​are tested respectively to obtain the box wall sound absorbing and insulating material of the box wall sound absorbing and insulating device corresponding to the optimal vibration noise value.

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