Three-phase five-column transformer

Abstract

The utility model relates to the technical field of transformers, in particular to a three-phase five-column transformer which comprises a sound insulation mounting seat, a limiting mechanism and an iron core body, the sound insulation mounting seat is U-shaped, and a plurality of evenly-distributed groove holes are formed in the side walls of the sides, close to each other, of the sound insulation mounting seat. A first cavity and a second cavity are sequentially formed in the two sides of the interior of the sound insulation mounting base, a plurality of evenly-distributed sound absorption balls are arranged in the first cavity, and a plurality of evenly-distributed noise reduction grooves are formed in each sound absorption ball. The noise reduction device has the beneficial effects that noise can enter the groove holes through the groove holes, due to the fact that the sound absorption balls and the glass wool are arranged in the first cavity and the second cavity correspondingly, the noise reduction grooves are formed in the sound absorption balls and are irregularly arranged, when noise sound waves enter the noise reduction grooves, the sound waves are reflected for multiple times in the noise reduction grooves, and finally sound energy is converted into heat energy; therefore, noise is effectively absorbed, and noise propagation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a three-phase five-column transformer. Background Art

[0002] The three-phase five-column transformer is a transformer with a special structure. Its core is composed of five columns. Coils are installed on the three middle columns, and the two side columns serve as part of the magnetic circuit. The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the core. The main functions include: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. The transformer is the basic equipment for power transmission and distribution, and is widely used in industry, agriculture, transportation, urban communities and other fields.

[0003] In the prior art, the noise generated by the transformer is caused by the magnetoelastic deformation of the iron core and the winding. The factor that causes the iron core to generate noise is that the silicon steel sheets that constitute the iron core will undergo subtle changes under the action of the alternating magnetic field, namely magnetoelasticity. Magnetoelasticity causes the iron core to oscillate periodically with the change of the excitation frequency. Therefore, the transformer will generate certain noise during operation, which will seriously affect the daily life of residents around the transformer. Utility Model Content

[0004] The purpose of the utility model is to provide a three-phase five-column transformer to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-phase five-column transformer, comprising a sound insulation mounting seat, a limiting mechanism and an iron core body, the limiting mechanism being arranged in the sound insulation mounting seat, the iron core body being arranged in the sound insulation mounting seat through the limiting mechanism, the sound insulation mounting seat being U-shaped and the side walls of the sound insulation mounting seat close to each other are provided with a plurality of evenly distributed slots, the sound insulation mounting seat is provided with a cavity one and a cavity two on both sides thereof in sequence, a plurality of evenly distributed sound absorbing balls are arranged in the cavity one and a plurality of evenly distributed sound absorbing grooves are arranged in each sound absorbing ball.

[0006] Preferably, the limiting mechanism comprises a mounting plate, and the mounting plates are symmetrically distributed and fixedly mounted on the inner side walls on both sides of the sound insulation mounting seat, and ears are symmetrically fixedly mounted in the middle of the mounting plates.

[0007] Preferably, a pin is rotatably mounted in the middle of the inner part of the support ear, a connecting rod is fixedly mounted in the middle of the outer periphery of the pin, and a torsion spring is sleeved on the outer periphery of the pin.

[0008] Preferably, a limiting angle plate is fixedly installed on the upper part of the connecting rod on the same side, and an abutment block is fixedly installed on the lower part of the connecting rod on the same side, and the surface of the abutment block is in an arc shape.

[0009] Preferably, the cavity one and the cavity two are alternately distributed, and the cavity two is filled with glass wool.

[0010] Preferably, the core body comprises sheets of five specifications and the sheets are distributed in staggered stacks.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The three-phase five-column transformer proposed in the utility model is provided with an iron core body and a sound insulation mounting seat, and noise will enter the slot hole through the slot hole. Since sound-absorbing balls and glass wool are respectively provided in the cavity one and the cavity two, and silencer grooves are provided in the sound-absorbing balls and the silencer grooves are irregularly arranged, when the noise sound waves enter the silencer grooves, the sound waves are reflected multiple times inside the silencer grooves, and finally the sound energy is converted into heat energy, thereby effectively absorbing the noise and reducing the propagation of the noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the local structure of the sound insulation mounting base of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the sound insulation mounting base of the utility model;

[0016] Figure 4 It is a partial structural diagram of the limiting mechanism of the utility model.

[0017] In the figure: 1. Limiting mechanism; 11. Mounting plate; 12. Limiting angle plate; 13. Pin shaft; 14. Abutment block; 15. Connecting rod; 16. Torsion spring; 17. Support ear; 2. Sound insulation mounting seat; 21. Slot hole; 22. Sound-absorbing ball; 23. Cavity 1; 24. Cavity 2; 25. Silencing groove; 3. Core body. DETAILED DESCRIPTION

[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 4The utility model provides a technical solution: a three-phase five-column transformer, comprising a sound insulation mounting seat 2, a limiting mechanism 1 and an iron core body 3, the limiting mechanism 1 is arranged in the sound insulation mounting seat 2, the iron core body 3 is arranged in the sound insulation mounting seat 2 through the limiting mechanism 1, the sound insulation mounting seat 2 is U-shaped and the side walls of the sound insulation mounting seat 2 close to each other are provided with a plurality of evenly distributed slots 21, the two sides of the interior of the sound insulation mounting seat 2 are sequentially provided with a cavity 1 23 and a cavity 2 24, and a plurality of evenly distributed absorption holes 21 are provided in the cavity 1 23. The sound ball 22 and each sound absorbing ball 22 are provided with a plurality of evenly distributed silencer grooves 25, the cavity 1 23 and the cavity 2 24 are alternately distributed, and the cavity 2 24 is filled with glass wool. The iron core body 3 includes five kinds of sheet materials and the sheets are staggered and stacked. When the iron core generates noise, the noise will enter the slot 21 through the slot 21. Since the sound absorbing ball 22 and the glass wool are respectively provided in the cavity 1 23 and the cavity 2 24, and the silencer groove 25 is provided in the sound absorbing ball 22 and the silencer groove 25 is not The rule is set. When the noise sound wave enters the silencer groove 25, the sound wave is reflected multiple times inside the silencer groove 25, and finally the sound energy is converted into heat energy, thereby effectively absorbing the noise and reducing the propagation of the noise. At the same time, the sheets in the iron core body 3 are staggered, so that the joints do not need to be coated with high-temperature glue, which can save costs and avoid the iron core body 3 from heating up after running for a period of time, causing it to soften at high temperature and increase noise. At the same time, the iron core sheet adopts multi-stage seams. The iron core sheet with multi-stage seams has less no-load noise than the two-stage seams. , which can reduce noise by 4-5 decibels. This is because after using multi-level joints, the magnetic flux distribution at the joints is more uniform, and the magnetic density in the air gap is greatly reduced, resulting in the noise caused by magnetic attraction at the joints. It can prevent the iron core material from being mechanically impacted during processing and production, otherwise the magnetoelasticity of the silicon steel sheet will increase, thereby increasing the noise of the iron core. Applying epoxy glue or polyester glue on the end face of the iron core material can increase the tension binding on the surface of the iron core, and can also reduce the magnetoelasticity and reduce noise.

[0020] The limiting mechanism 1 includes a mounting plate 11, which is symmetrically distributed and fixedly installed on the inner side walls of both sides of the sound insulation mounting seat 2. The middle of the mounting plate 11 is symmetrically fixedly installed with a support ear 17, and the middle of the support ear 17 is rotatably installed with a pin shaft 13, and the middle of the outer periphery of the pin shaft 13 is fixedly installed with a connecting rod 15, and the outer periphery of the pin shaft 13 is sleeved with a torsion spring 16, and the upper part of the same side connecting rod 15 is fixedly installed with a limited position angle plate 12, and the lower part of the same side connecting rod 15 is fixedly installed with an abutment block 14, and the surface of the abutment block 14 is arc-shaped. The core body 3 is placed in the sound insulation mounting seat 2. At this time, the lower part of the core body 3 It will come into contact with the abutment block 14. Since the surface of the abutment block 14 is in an arc shape, it is convenient for the core body 3 to push the abutment plate to move. As the abutment plate moves, the upper part of the connecting rod 15 will tilt up, and then the limiting angle block will be clamped on the upper part of the core body 3, thereby completing the initial limiting of the core body 3. Then the staff can use fixing bolts and other fixing parts to fix and install the core body 3 to avoid displacement of the core body 3 during the installation process. The staff needs to adjust the position of the core body 3, and a torsion spring 16 is provided on the pin shaft 13, which can facilitate the resetting of the connecting rod 15 and facilitate the next installation.

[0021] During actual use, the staff can use the abutment block 14 in conjunction with the connecting rod 15 and the limiting angle plate 12 to limit the core body 3 in the installation position, and then use the fixing screws to install and fix it. When the core body 3 generates noise, the noise will enter cavity one 23 and cavity two 24 through the slot 21. The noise can be absorbed by glass wool and sound-absorbing balls 22, which can effectively prevent the spread of noise and reduce the noise generated during the use of the transformer. The sound-absorbing balls 22 are made of polyester fiber, which can increase the absorption of noise.

[0022] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A three-phase five-column transformer, comprising a sound insulation mounting seat (2), a limiting mechanism (1) and an iron core body (3), wherein the limiting mechanism (1) is arranged in the sound insulation mounting seat (2), and the iron core body (3) is arranged in the sound insulation mounting seat (2) through the limiting mechanism (1), characterized in that: The sound insulation mounting seat (2) is U-shaped and a plurality of evenly distributed slots (21) are provided on the side walls of the sound insulation mounting seat (2) close to each other. A cavity 1 (23) and a cavity 2 (24) are provided on both sides of the interior of the sound insulation mounting seat (2) in sequence. A plurality of evenly distributed sound absorbing balls (22) are provided in the cavity 1 (23) and a plurality of evenly distributed sound absorbing grooves (25) are provided in each sound absorbing ball (22).

2. A three-phase five-column transformer according to claim 1, characterized in that: The limiting mechanism (1) comprises a mounting plate (11), wherein the mounting plates (11) are symmetrically distributed and fixedly mounted on the inner side walls on both sides of the sound insulation mounting seat (2), and support ears (17) are symmetrically fixedly mounted in the middle of the mounting plates (11).

3. A three-phase five-column transformer according to claim 2, characterized in that: A pin shaft (13) is rotatably mounted in the middle of the inner part of the support ear (17), a connecting rod (15) is fixedly mounted in the middle of the outer periphery of the pin shaft (13), and a torsion spring (16) is sleeved on the outer periphery of the pin shaft (13).

4. A three-phase five-column transformer according to claim 3, characterized in that: The upper part of the connecting rod (15) on the same side is fixedly mounted with a limited angle plate (12), and the lower part of the connecting rod (15) on the same side is fixedly mounted with an abutment block (14), and the surface of the abutment block (14) is in an arc shape.

5. A three-phase five-column transformer according to claim 1, characterized in that: The cavity one (23) and the cavity two (24) are alternately distributed, and the cavity two (24) is filled with glass wool.

6. A three-phase five-column transformer according to claim 1, characterized in that: The core body (3) comprises sheets of five specifications, and the sheets are distributed in a staggered stack.

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