Self-adaption indoor transformer noise elimination device and implement method thereof
A transformer and self-adaptive technology, which is applied in the field of transformer noise reduction, can solve the problems such as the absence of noise reduction devices, and achieve the effects of no safety hazards, small space occupation, and low cost
Inactive Publication Date: 2014-06-04
STATE GRID CORP OF CHINA +1
View PDF4 Cites 12 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The principle is to counteract the sound waves of the noise source by artificially manufacturing one or more controlled secondary sounding devices to emit sound based on the characteristics of the coherence of sound waves; however, there is no such noise reduction device in this industry.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] The adaptive noise elimination device for indoor transformer noise provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0051] Such as figure 1As shown, the adaptive denoising device of indoor transformer noise provided by the present invention includes: a plurality of reference microphones 1, a reference preamplifier 2, a reference low-pass filter 3, a plurality of error microphones 4, an error preamplifier 5, an error Low-pass filter 6, filter circuit 7, power amplifier circuit 8, multiple speakers 9, audio chip 10, data processor 11, clock circuit 12, external program memory unit 13 and external data memory unit 14; wherein: reference microphone 1 Connect to the audio chip 10 through the reference preamplifier 2 and the reference low-pass filter 3 in turn;
[0052] The error microphone 4 is connected with the audio chip 10 through the error preamplifier 5 and the error low-pass ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a self-adaption indoor transformer noise elimination device and an implement method thereof. The self-adaption indoor transformer noise elimination device comprises a plurality of reference microphones, a reference pre-amplifier, a reference low-pass filter, a plurality of error microphones, an error pre-amplifier, an error low-pass filter, a filter circuit, a power amplifying circuit, a plurality of loudspeakers, an audio chip, a data processor, a clock circuit, an external program storage unit and an external data storage unit. The self-adaption indoor transformer noise elimination device is economical and practical, low in manufacture cost, safe and reliable, free of limitation of on-site space during installation and usage and potential safety hazard and small in floor space. Furthermore, the multistage subarray loudspeakers can be made into movable cart types and can move and be dismantled conveniently when a transformer shuts down for overhaul, and accordingly, the self-adaption indoor transformer noise elimination device has generalizability. In order to solve the problem of too many numbers of channels caused by large sizes of indoor transformers of transformer substations in urban area, the concept of self-adaption elimination is put forward, and the multistage subarray loudspeakers are adopted to eliminate noise.
Description
technical field [0001] The invention belongs to the technical field of transformer noise reduction, and in particular relates to an adaptive noise reduction device and a realization method for indoor transformer noise. Background technique [0002] With the development of economy and society, the load of electricity consumption is increasing, and more and more substations are located in urban areas. We know that the power transmission and transformation equipment in the substation will generate noise when it is running. The noise mainly comes from the vibration of the cooling fan of the transformer and the body noise. There are two types, among which the body noise is the most likely to cause irritability, and if no measures are taken, it will seriously affect the daily life of the surrounding residents. The research shows that the body noise is mainly caused by the magnetostriction of the silicon steel sheet on the transformer and the electromagnetic force of the winding. T...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H04R3/02
Inventor 李宁李治贺春田冬梅房志廉魏亚军
Owner STATE GRID CORP OF CHINA