Noise-reduction protective apparatus for power distribution transformer

A distribution transformer and protective device technology, applied in the field of transformers, can solve problems such as transformer noise not being effectively resolved, and achieve excellent chemical stability and corrosion resistance, good sound insulation effect, and excellent sound insulation performance

Active Publication Date: 2017-02-01
NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the noise problem generated by the transformer itself has not been effectively solved.

Method used

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  • Noise-reduction protective apparatus for power distribution transformer
  • Noise-reduction protective apparatus for power distribution transformer
  • Noise-reduction protective apparatus for power distribution transformer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: see Figures 1~3 , a noise reduction protection device for a distribution transformer, including a side wall 1, a top plate 2 and a support beam 3, the top plate 2 is covered on the upper part of the side wall 1, and together with the side wall 1 constitutes the transformer 20 of the protective cavity 9, the side wall 1 is provided with a door opening and a door panel matched with the door opening, the side wall 1 includes a foam concrete wall 4 and a PVC board 5 from outside to inside, and the foam concrete wall The outer surface of the body 4 is coated with a transparent waterproof material, the inner surface of the PVC board 5 is coated with a shielding paint 6, there is a gap 7 between the foam concrete wall 4 and the PVC board 5, and an airtight cavity is arranged inside the gap 21. The surrounding side of the airtight cavity is filled with thermal insulation material 22, and the airtight cavity communicates with the protective cavity through several thr...

Embodiment 2

[0035] Example 2: see Figure 4 The noise reduction protection device for distribution transformers described in this embodiment is improved on the basis of Embodiment 1, specifically:

[0036] The inner surface of the PVC board 5 has thorn-like protrusions 10, the height of the thorn-like protrusions 10 is 5-8 mm, and the width of the thorn-like protrusions 10 is 0.5-1.2 cm. Wherein, the height of the thorn-like protrusion 10 refers to the vertical distance between the point where the thorn-like protrusion 10 is away from the PVC board 5 and the reference plane with the PVC board 5 as the reference plane. According to actual needs, any value between 5-8 mm can be selected, for example, 5, 6, 7 or 8 mm; the height of the spinous protrusion 10 can be selected from 0.5-1.2 cm, such as 0.5 cm, 0.8 cm, 1.0 cm. The section plane of spiny protrusion 10 refers to Figure 4 , the base is wide, and the connecting surface with the PVC plate 5 is circular. If the height and width of ...

Embodiment 3

[0037] Example 3: see Figure 5 , the noise reduction protection device for distribution transformers described in this embodiment is improved on the basis of Embodiment 1, and can also be used in combination with Embodiment 2, specifically:

[0038] The top plate 2 is made of a plastic waterproof board, and the inner side of the plastic waterproof board is provided with an aluminum honeycomb porous sound-absorbing board 12. The perforation rate of the aluminum honeycomb porous sound-absorbing board 12 is 12-20%, and the aperture is 2.0-2.5 mm. . The aluminum honeycomb porous sound-absorbing panel 12 is set to enhance the internal sound-absorbing effect, and the perforation rate and the size of the aperture will affect the transformation of the sound wave. According to experiments, when the perforation rate of the aluminum honeycomb porous sound-absorbing panel 12 is 12-20%, The hole diameter is 2.0~2.5mm, the sound absorption effect is better, and within the above range, the...

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Abstract

The invention provides a noise-reduction protective apparatus for a power distribution transformer, and belongs to the technical field of the transformer. The noise-reduction protective apparatus comprises a side wall, a top plate, and a supporting beam, wherein the side wall comprises a foam concrete wall body and a PVC board from outside to inside in sequence; the outer side face of the foam concrete wall body is coated with a transparent waterproof material; the inner side face of the PVC board is coated with shielding coating; a gap is formed between the foam concrete wall body and the PVC board; a sealed hollow cavity is formed in the gap; the circumferential side of the sealed hollow cavity is filled with a thermal insulating material; the sealed hollow cavity is connected with a protective cavity through multiple threaded holes; the threaded holes are formed in a tilted manner; the threaded holes are connected with an air injection mechanism; the air injection mechanism comprises an air injection pipe which is connected with the threaded holes in a matching manner; the sealed hollow cavity is connected with an air supply mechanism; an air exhausting mechanism is arranged on the top plate; and a temperature monitoring module and a smog monitoring module are arranged in the protective cavity. The noise-reduction protection apparatus is good in shielding effect, capable of reducing outward propagation of noise, and capable of realizing effective fireproof and temperature-reducing effects.

Description

technical field [0001] The invention belongs to the technical field of transformers, and in particular relates to a noise reduction protection device for distribution transformers. Background technique [0002] A transformer is a static electrical device that converts an AC voltage (current) of a certain value into another voltage (current) with the same frequency or several different values ​​through electromagnetic coupling. In the long-distance power transmission, the transformer plays an important role. On the one hand, the transformer boosts the voltage to send the power to the power-consuming area, and on the other hand, the transformer reduces the voltage to the voltage used at all levels to meet the needs of users. In recent years, with the improvement of people's living standards, the electricity consumption of residents has increased rapidly, resulting in the increase of transformers in residential areas. At present, the location of transformers is basically locat...

Claims

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Application Information

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IPC IPC(8): H01F27/33C09D4/02C09D4/06C09D7/12C09D5/08C09D7/00
CPCC09D4/06C09D5/08H01F27/33
Inventor 付静石国松
Owner NANYANG POWER SUPPLY COMPANY OF STATE GRID HENAN ELECTRIC POWER
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