CN217507083U - Mute dry-type transformer - Google Patents

Abstract

The utility model relates to a silence dry-type transformer belongs to electric power transformation technical field. The transformer comprises a base and a transformation unit, wherein the base is provided with the three-compartment transformation unit, the bottom of the base is provided with a vibration damping mechanism, the vibration damping mechanism comprises a clamping fixer, a steel wire rope A and a steel wire rope B, and the steel wire rope A and the steel wire rope B are arranged between the clamping fixers which are arranged in parallel up and down. The transformer can reduce vibration of the transformer, so that the vibration of the transformer is effectively reduced, the noise is effectively reduced, and the noise pollution is reduced; the high-voltage coil, the low-voltage coil and the iron core can be integrated respectively, and the vibration of the high-voltage coil, the low-voltage coil and the iron core is reduced, so that the noise is further reduced; the magnetic performance at the joint can be improved, and the magnetic saturation at the staggered position is reduced, so that the no-load loss and the noise of the transformer are reduced; the problem of current dry-type transformer noise big, easily cause noise pollution is solved.

Description

Mute dry-type transformer

Technical Field

The utility model relates to a silence dry-type transformer belongs to electric power transformation technical field.

Background

In recent years, with the improvement of living standard of people, the demand of electricity utilization is continuously increasing, the requirements on fire prevention and environmental pollution are higher and higher, and the transformer is gradually deepened into urban areas. The existing transformer is generally an oil-immersed transformer or a dry-type transformer, and the dry-type transformer has better fireproof advantage compared with the oil-immersed transformer, so that the dry-type transformer is generally adopted in cities. The dry type transformer comprises an iron core and a coil, wherein the iron core and the coil are directly exposed in the air, the transformer is vibrated by factors such as magnetostriction of silicon steel sheets of the iron core, magnetic force between joints of the iron core and laminated sheets, electromagnetic acting force between current-carrying conductors and the like, noise generated by vibration is directly sent to human ears through an air medium, and the noise of the transformer has the characteristics of low frequency, slow attenuation and far propagation, so that the noise of the transformer is difficult to be economically and effectively eliminated or reduced at present. Persistent noise in dry transformers can cause fatigue in the nervous system, causing noise problems to become of increasing general concern. The noise of the transformer pollutes the environment and harms the human health, so the low-noise transformer is more important originally;

the utility model discloses a utility model patent that publication number is CN216054146U discloses a dry-type transformer shock attenuation buffer gear, this dry-type transformer shock attenuation buffer gear, through setting up the connecting rod, so that when the transformer body shakes, make the connecting rod pass through the sliding sleeve and slide on the dead lever, make first spring cushion two sliding sleeves, in order to carry out the shock attenuation to the transformer body, further cushion the transformer body through the second spring simultaneously, in order to reduce the noise that the transformer body produced because of vibrations, improve stability in use and security. Although the dry-type transformer damping and buffering mechanism can reduce the noise of the dry-type transformer in a damping mode, when the sliding sleeve slides on the connecting rod, the sliding sleeve and the connecting rod rub against each other, and the friction vibration still can generate noise between the sliding sleeve and the connecting rod, and especially after the friction force between the sliding sleeve and the connecting rod is increased (for example, after the sliding sleeve and the connecting rod are not lubricated enough or the sliding sleeve and the connecting rod are corroded to cause uneven surfaces), the noise can be increased along with the increase of the friction force. Therefore, it is necessary to redesign a silent dry type transformer to solve the above problems.

Disclosure of Invention

The utility model aims at: aiming at the defects of the prior art, the mute dry-type transformer can effectively reduce noise and reduce noise pollution so as to solve the problems of large noise and easy noise pollution of the existing dry-type transformer.

The technical scheme of the utility model is that:

a silence dry-type transformer, it comprises base and vary voltage unit, is provided with three railway carriage or compartment vary voltage unit on the base, its characterized in that: the vibration reduction mechanism is arranged at the bottom of the base and consists of clamping fixing devices, a steel wire rope A and a steel wire rope B, and the steel wire rope A and the steel wire rope B are arranged between the clamping fixing devices which are arranged in parallel up and down.

The clamping fixer consists of an upper clamping plate, a lower clamping plate and a locking bolt, wherein the lower clamping plate is arranged below the upper clamping plate through the locking bolt, and a steel wire rope A and a steel wire rope B are spirally wound between the upper clamping plate and the lower clamping plate respectively.

The spiral directions of the steel wire rope A and the steel wire rope B are opposite.

The transformation unit is composed of an iron core, a low-voltage coil and a high-voltage coil, the low-voltage coil is sleeved on the iron core, and the high-voltage coil is sleeved outside the low-voltage coil.

The low-voltage coil and the high-voltage coil are cast and integrally formed through epoxy resin layers respectively, and an air channel is arranged between the low-voltage coil and the high-voltage coil.

The iron core is stacked in a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam mode, the iron core is bound through a binding band, and an insulating paint layer is coated on the circumference of the iron core.

The beneficial effects of the utility model reside in that:

the silent dry-type transformer can reduce the vibration of the transformer through the vibration absorber, so that the vibration of the transformer is effectively reduced, the noise is effectively reduced, and the noise pollution is reduced; the high-voltage coil, the low-voltage coil and the iron core are respectively integrated by casting the high-voltage coil and the low-voltage coil and binding the iron core, so that the vibration of the high-voltage coil, the low-voltage coil and the iron core is reduced, the vibration of the transformer is further reduced, and the noise is further reduced; the iron cores are stacked in a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam mode, so that the magnetic performance at the seam is improved, and the magnetic saturation at the staggered position is reduced, so that the no-load loss and the noise of the transformer are reduced; the problem of current dry-type transformer noise big, easily cause noise pollution is solved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic structural view of the shock absorber of the present invention;

figure 4 is a left side schematic view of the shock absorber of the present invention;

fig. 5 is a schematic cross-sectional view of the transformer unit of the present invention;

fig. 6 is a schematic top view of an iron core of the present invention;

fig. 7 is a schematic structural view of an iron core of the present invention;

fig. 8 is an enlarged schematic view at a in fig. 7.

In the figure: 1. the device comprises a base, 2, a transformation unit, 3, a vibration damping mechanism, 201, an iron core, 202, a low-voltage coil, 203, a high-voltage coil, 204, an epoxy resin layer, 205, an air duct, 206, a binding band, 301, steel wire ropes A and 302, steel wire ropes B and 303, an upper clamping plate, 304 and a lower clamping plate.

Detailed Description

The mute dry-type transformer consists of a base 1 and a transformation unit 2, wherein the base 1 is provided with a three-compartment transformation unit 2 so as to transform three-phase electricity through the three-compartment transformation unit 2 and change the voltage of the three-phase electricity from high voltage to low voltage; the bottom of the base 1 is provided with a vibration damping mechanism 3, so that vibration is damped through the vibration damping mechanism, the vibration of the transformer is reduced, the noise is further reduced, and the noise pollution is prevented; the vibration reduction mechanism 3 is composed of clamping fixers, a steel wire rope A301 and a steel wire rope B302, the steel wire rope A301 and the steel wire rope B302 are arranged between the clamping fixers which are arranged in parallel up and down, so that the base 1 is flexibly connected with the assembly foundation through the steel wire rope A301 and the steel wire rope B302, the resonance frequency of the transformer and the assembly foundation is further changed, the assembly foundation and the transformer are not easy to resonate, the noise is further reduced, meanwhile, the transformer is buffered in the vibration process of the transformer through the toughness of the steel wire rope A301 and the steel wire rope B302, the vibration of the transformer is further reduced, the noise is further reduced, and the noise pollution is prevented; the clamping fixer is composed of an upper clamping plate 303, a lower clamping plate 304 and a locking bolt, the lower clamping plate 304 is installed below the upper clamping plate 303 through the locking bolt, a steel wire rope A301 and a steel wire rope B302 are spirally wound between the upper clamping plate 303 and the lower clamping plate 304 respectively, so that the steel wire rope A301 and the steel wire rope B302 are clamped and fixed through the upper clamping plate 304 and the lower clamping plate 305, the length of a section between the steel wire rope A301 and the steel wire rope B302 between the clamping fixer is kept, the steel wire rope A301 and the steel wire rope B302 are prevented from circumferentially contracting under the action of pressure, the clamping fixer is prevented from being collided, the support of the steel wire rope A301 and the steel wire rope B302 on the base 1 is kept, and the support of the transformer is kept; the spiral directions of the steel wire rope A301 and the steel wire rope B302 are opposite, the purpose is that the inclined pressure is offset by the steel wire ropes which are clockwise spiral and anticlockwise spiral, the steel wire ropes cannot incline, so that the dislocation deviation between the clamping fixing devices is avoided, the clamping fixing devices are further guaranteed not to be collided, meanwhile, the steel wire ropes with opposite spiral directions can be pushed while being pulled in the vibration process, the vibration in all directions is responded, the vibration reduction effect is guaranteed, and the noise is reduced.

The transformation unit is composed of an iron core 201, a low-voltage coil 202 and a high-voltage coil 203, the iron core 201 is sleeved with the low-voltage coil 202, the low-voltage coil 202 is sleeved with the high-voltage coil 203, and transformation is carried out by matching the low-voltage coil 202 with the high-voltage coil 203 so as to reduce voltage; the low-voltage coil 202 and the high-voltage coil 203 are cast and integrally formed through the epoxy resin layer 204 respectively, the coils cast and cured in the mold can form a complete rigid body, the coils have strong tolerance capacity to axial electrodynamic force or radial electrodynamic force during sudden short circuit, and because supporting points such as cushion blocks are not arranged, a lead cannot bear bending stress, so that the mechanical strength is high, the whole coil conductor is encapsulated by the solid insulating layer of epoxy resin, so that moisture is difficult to soak, the possibility that the conductor is invaded by various harmful gases and corrosive chemical components is completely blocked, the moisture-proof and antifouling performance is excellent, and the high-voltage coil can work under extremely severe environmental conditions; because the coil is molded by casting, no bubble exists between turns and layers, the partial discharge is low, on the other hand, under the condition of the same insulation level and size, the rated loss and the rated temperature rise of the transformer are low due to the same insulation grade, the transformer has the advantages of energy saving and environmental protection, and meanwhile, the overload capacity is strong due to the low rated temperature rise; an air duct 205 is arranged between the low-voltage coil 202 and the high-voltage coil 203, so that air circulating in the air duct 205 can dissipate heat of the high-voltage coil 203 and the low-voltage coil 202; the iron core 201 is stacked in a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam manner (refer to fig. 7 and 8), that is, the iron core 201 is stacked in a 45-degree silicon steel sheet end, and the silicon steel sheets are connected in a seven-step stepped seam manner; after the iron core 201 adopts a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam mode, the magnetic density of silicon steel sheets adjacent to an air gap can be effectively reduced, and the frequency of crossing the air gap by a magnetic line of force is reduced, compared with a traditional double-sheet five-level iron core, the no-load loss is reduced by about 5-8%, the noise is reduced by 5-10 dB, the magnetic performance of the traditional seam iron core at the seam is improved, the noise environmental pollution is reduced, the material utilization rate is increased, and the magnetic saturation at the staggered position is reduced, so that the no-load loss and the noise of a transformer are reduced, the energy is saved, and the power supply quality is improved; the iron core 201 is bound through the binding bands 206, an insulating paint layer is coated on the circumference of the iron core 201, the insulating paint layer is uniform and complete, and the iron core 201 is integrated through the binding bands 206, so that air gaps and vibration in operation are reduced.

The silent dry-type transformer can reduce the vibration of the transformer through the vibration absorber, so that the vibration of the transformer is effectively reduced, the noise is effectively reduced, and the noise pollution is reduced; the high-voltage coil 203, the low-voltage coil 202 and the iron core 201 can be respectively integrated by casting the high-voltage coil 203 and the low-voltage coil 202 and binding the iron core 201, so that the vibration of the high-voltage coil 203, the low-voltage coil 202 and the iron core 201 is reduced, the vibration of the transformer is further reduced, and the noise is further reduced; the iron cores are stacked in a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam mode, so that the magnetic performance at the seam is improved, and the magnetic saturation at the staggered position is reduced, so that the no-load loss and the noise of the transformer are reduced; the problem of current dry-type transformer noise big, easily cause noise pollution is solved.

Claims (6)

1. The utility model provides a silence dry-type transformer, it comprises base (1) and vary voltage unit (2), is provided with three railway carriage or compartment vary voltage unit (2) on base (1), its characterized in that: the damping mechanism (3) is arranged at the bottom of the base (1), the damping mechanism (3) is composed of clamping fixing devices, a steel wire rope A (301) and a steel wire rope B (302), and the steel wire rope A (301) and the steel wire rope B (302) are arranged between the clamping fixing devices which are arranged in parallel up and down.

2. A silent dry-type transformer as claimed in claim 1, wherein: the clamping fixer is composed of an upper clamping plate (303), a lower clamping plate (304) and a locking bolt, the lower clamping plate (304) is installed below the upper clamping plate (303) through the locking bolt, and a steel wire rope A (301) and a steel wire rope B (302) penetrate between the upper clamping plate (303) and the lower clamping plate (304) in a spiral shape respectively.

3. A silent dry transformer as claimed in claim 2, wherein: the spiral directions of the steel wire rope A (301) and the steel wire rope B (302) are opposite.

4. A silent dry-type transformer as claimed in claim 1, wherein: the transformation unit is composed of an iron core (201), a low-voltage coil (202) and a high-voltage coil (203), wherein the iron core (201) is sleeved with the low-voltage coil (202), and the low-voltage coil (202) is sleeved with the high-voltage coil (203).

5. A silent dry transformer as claimed in claim 4, wherein: the low-voltage coil (202) and the high-voltage coil (203) are cast and integrally formed through epoxy resin layers (204), and an air duct (205) is arranged between the low-voltage coil (202) and the high-voltage coil (203).

6. The silent dry transformer as claimed in claim 4, wherein: the iron cores (201) are stacked in a 45-degree fully-inclined longitudinal and transverse seven-step stepped seam mode, the iron cores (201) are bound through binding bands (206), and an insulating paint layer is coated on the circumference of each iron core (201).

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