CN203377081U - Novel transformer room noise-proof ventilation system - Google Patents

Abstract

The utility model relates to a novel anti-noise ventilation system for a transformer room, which is mainly composed of a fan, a fan room, natural ventilation shutters, an air inlet and an air outlet. There is a fan room on the roof of the transformer; fans are installed in the fan room, natural ventilation louvers are installed next to the fans, motors are installed on the natural ventilation louvers, and the opening and closing of the natural ventilation louvers are controlled by the operation of the motors; the walls on both sides of the fan room Each is provided with an air outlet. The lower part of the main transformer room and both sides of the door of the main transformer room are equipped with air inlets, and noise-absorbing louvers are installed at the air inlets and outlets to eliminate the noise of the main transformer room. The utility model has reasonable design, good ventilation effect and low noise.

Description

New type transformer room anti-noise ventilation system

technical field

The invention relates to a noise reduction device for a transformer room of a power supply system substation, in particular to a novel anti-noise ventilation system for a transformer room. the

Background technique

In recent years, with the development of urban construction, the power load has increased rapidly, and the noise of substations is very loud. Especially, substations near densely populated areas are likely to cause complaints from residents. Therefore, it is imperative to solve the noise pollution of substations. The impact and harm of substation noise on personnel are various, the main manifestations are the impact on hearing; interference with personnel's effective acquisition of useful sound signals and information; interference with rest and sleep, leading to fatigue; physiological and psychological impact on the human body , leading to agitation, irritability, etc. According to relevant experiments, when people work in a noise environment of about 100 decibels, they will feel harsh, uncomfortable, and even cause temporary deafness. According to the survey of the International Organization for Standardization (ISO), working in environments with noise levels of 85dB and 90dB for 30 years, the possibility of deafness is 8% and 18% respectively. In the 70dB environment, the conversation will feel difficult. Therefore, many countries in the world have proposed corresponding tolerance ranges for environmental noise, and our country is no exception. Take the second-class daytime standard proposed in the national standard "Urban Environmental Noise Standard" (GB3096-93) as an example, that is: 6:00~22:00 must not exceed 60dB(a). The power engineering design also proposes that the following levels should not be greater than 2m away from electrical appliances: continuous noise level: 85dB; discontinuous noise level: indoor 90dB, outdoor 110dB. In view of the existence of the above-mentioned noise hazards, in the substation, it is necessary to consider the impact of noise on the staff in the substation and nearby residents, and take comprehensive control measures. the

For the noise reduction outside the transformer, an elastic anti-vibration bracket or rigid spring or rubber pad can be installed at the bottom of the transformer for vibration reduction. Build a sound insulation wall next to the outdoor transformer to play the role of sound insulation and sound absorption. For indoor substations, in addition to coating the interior wall of the main transformer room or installing sound-absorbing bricks and panels to increase the sound absorption coefficient of the wall . The doors, windows and vents of the main transformer room are the main sources of noise. The use of sound-proof doors and noise-absorbing louver ventilation windows can effectively reduce transformer noise. the

Contents of the invention

The purpose of the utility model is to provide a novel transformer room anti-noise ventilation system. The main transformer room adopts an anti-noise ventilation system, and the main transformer room reduces noise in sequence from the fan itself, air ducts, exhaust outlets, shutters and other links. the

The technical solution of the utility model: the novel transformer room anti-noise ventilation system is mainly composed of a fan, a fan room, natural ventilation shutters, an air inlet and an air outlet. There is a fan room on the roof of the transformer; fans are installed in the fan room, natural ventilation louvers are installed next to the fans, motors are installed on the natural ventilation louvers, and the opening and closing of the natural ventilation louvers are controlled by the operation of the motors; the walls on both sides of the fan room Each is provided with an air outlet. The lower part of the main transformer room and both sides of the door of the main transformer room are equipped with air inlets, and noise-absorbing louvers are installed at the air inlets and outlets to eliminate the noise of the main transformer room. the

When the main transformer room is in the state of natural ventilation (schematic diagram 1), the fan is in the stop state at this time, and the fan temperature control box controls the opening of the natural ventilation louvers. Therefore, negative pressure is formed in the main transformer room through the noise-eliminating louvers at the bottom of the main transformer room and the air inlets on both sides of the gate and the natural ventilation louvers on the roof. , the cold air exchanges heat with the transformer body and cooling fins, reaches the upper part of the transformer room, reaches the fan room through the natural ventilation louvers, and discharges the hot air through the air outlet louvers on the wall of the fan room, forming an effective circulation of air. the

When the natural ventilation cannot meet the cooling requirements of the transformer and the temperature of the main transformer room exceeds the set value, the fan temperature control box will control the closing of the natural ventilation shutters, and at the same time start the fan for strong exhaust (as shown in schematic diagram 2). At this time, the natural ventilation louvers on the upper part of the main transformer room are closed, and the fan starts to forcibly inhale the cold air through the air inlets on both sides of the main transformer room underground and the door, and passes through the outside of the transformer. The cold air exchanges heat with the transformer body and cooling fins, and reaches the transformer. In the upper part of the room, the hot air is quickly discharged through the fan and the louvers on the wall of the fan room, forming a forced circulation of air to reduce the temperature of the transformer room. the

The utility model has reasonable design, good ventilation effect and low noise. the

Description of drawings

Fig. 1 is the working schematic diagram of the utility model natural ventilation state;

Fig. 2 is a working schematic diagram of the blower fan of the utility model in a strong exhaust state. the

Among them: 1. Fan 2. Fan room 3. Natural ventilation shutters 4. Air inlet 5. Air outlet

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described. the

The new transformer room anti-noise ventilation system, as shown in Figures 1 and 2, is mainly composed of fan 1, fan room 2, natural ventilation shutters 3, air inlet 4, and air outlet 5. A fan room 2 is provided on the roof of the transformer; a fan 1 is installed in the fan room 2, a natural ventilation shutter 3 is installed next to the fan 1, a motor is installed on the natural ventilation shutter 3, and the opening and closing of the natural ventilation shutter 3 is controlled by the operation of the motor; The walls on both sides of the fan room 2 are respectively provided with an air outlet 5 . The lower part of the main transformer room and both sides of the door of the main transformer room are provided with air inlet 4, and the air inlet 4 and the air outlet 5 are equipped with noise-absorbing louvers to eliminate the noise of the main transformer room.

Claims (1)

1. novel transformer chamber noise-proofing ventilating system, by blower fan (1), Ventilator Room (2), natural ventilation shutter (3), air inlet (4), air outlet (5), formed, it is characterized in that, transformer roof section is provided with Ventilator Room (2); Blower fan (1) is installed, at the other natural ventilation shutter (3) of installing of blower fan (1), at the upper motor of installing of natural ventilation shutter (3) in Ventilator Room (2); Respectively be provided with an air outlet (5) on the wall of Ventilator Room (2) both sides; Air inlet (4) is established in the bottom of transformer chamber and both sides, transformer chamber gate, and air inlet (4) and air outlet (5) have all been installed noise reduction shutter.

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