CN204754352U - 550 noise reduction silence system of kilovolt transformer substation - Google Patents

Abstract

The utility model relates to a noise reduction and mute system for a 550 kV substation. An underground air inlet channel communicating with the outside is dug under the wall of the transformer room. The air channel forms a ventilation shaft on the protruding part of the ground. The door body adopts a detachable ventilation and sound insulation door. Aluminum alloy ventilation and noise-absorbing louvers; the detachable ventilation and noise-absorbing door is composed of multiple panels embedded in the detachable frame. The aluminum alloy plate is used, and the aluminum mesh is arranged on the indoor side of the aluminum alloy ventilation and noise reduction louvers. The utility model adopts multiple sound insulation and noise reduction measures, the noise reduction effect is obvious, and the optimized control of the main equipment of the large noise source such as the substation is realized.

Description

550 kV Substation Noise Reduction and Mute System

technical field

The utility model relates to the technical field of environmental engineering, in particular to a noise reduction and mute system for a 550 kV substation.

Background technique

The reform and opening up and the introduction of foreign capital have contributed to the rapid development of urban construction. With the continuous increase of power load, the original power grid can no longer meet the requirements. 35KV, 66KV, 110KV, 220KV, 550KV indoor (outdoor) substations are being built in major and medium cities, and high-voltage converter stations are also Constantly increasing. It can be understood that the transformers of indoor and outdoor (mainly indoor) high-voltage substations will generate a lot of heat when they are working. The safe operation of transformers and various instruments often requires various natural ventilation or mechanical ventilation measures. In previous projects of this type, the control of noise pollution was often ignored. With the gradual improvement of the national environmental protection legal system, in order to protect the city Residents living environment, to solve the problem of noise pollution control has reached the point of no delay.

Utility model content

In view of this, the purpose of this utility model is to provide a 550 kV substation noise reduction and mute system to solve the deficiencies in the prior art.

In order to achieve the above object, the purpose of this utility model is achieved through the following technical solutions:

A noise reduction and muting system for a 550 kV substation, which is mainly used in the transformer room of the 550 kV substation, wherein the transformer room has a door body, a wall body, an air inlet window and an air exhaust window, and the wall body of the transformer room There is an underground air intake channel communicated with the outside dug below, and the air intake window is set at the place where the underground air intake channel communicates with the outside, and the underground air intake channel forms a ventilation shaft on the protruding part of the ground, and the door The body adopts a detachable ventilation and sound insulation door, the wall is a sound-absorbing wall, and both the air inlet window and the exhaust window are aluminum alloy ventilation and noise louvers with aluminum mesh; wherein, the disassembly The ventilation and sound insulation door is composed of multiple panels embedded in the detachable frame. The interior of the panels is filled with sound-absorbing materials, and the gaps in the door frame are filled with sealing strips. The sound-absorbing wall is a resonant sound-absorbing wall perforated structure, the aluminum alloy ventilation and noise reduction louvers include aluminum alloy plates laminated with each other and filled with glass fiber noise reduction cotton in the middle, and the aluminum mesh is arranged on the side of the aluminum alloy ventilation and noise reduction shutters facing the room.

In the aforementioned 550 kV substation noise reduction and muting system, the sound-absorbing material is made of intermediate glass wool fibers wrapped in glass cloth.

In the aforementioned 550 kV substation noise reduction and muting system, the upper surface of the aluminum alloy plate is further coated with a sound-absorbing sheet.

In the aforementioned 550 kV substation noise reduction and muting system, the middle part of the aluminum alloy plate is galvanized aluminum alloy plate.

The above-mentioned 550 kV substation noise reduction and mute system, wherein, the indoor floor of the transformer room is laid with a single-sided concave foam rubber vibration-damping and sound-insulating backing plate.

In the above-mentioned 550 kV substation noise reduction and mute system, the thickness of the single-sided concave foam rubber vibration-reduction and sound-insulation backing plate is 3 mm to 5 mm.

The above-mentioned 550 kV substation noise reduction and mute system, wherein, the detachable ventilation and noise reduction and sound insulation door is provided with a small inspection door.

The above-mentioned 550 kV substation noise reduction and mute system, wherein, the outside of the detachable ventilation and noise reduction and sound insulation door is provided with a steel plate for ships.

In the aforementioned 550 kV substation noise reduction and muting system, the perforated wall resonant sound-absorbing structure is composed of perforated gypsum board and acrylic cotton.

Compared with the prior art, the utility model has the beneficial effects of:

Multiple sound insulation and noise reduction measures are adopted, and the effective monitoring by the environmental monitoring department shows that the noise reduction effect is obvious, and the optimal control of the main equipment of large noise sources such as substations is realized.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 has shown the structural schematic diagram of the detachable ventilated sound-absorbing noise-absorbing door of 550 kilovolt substation noise-reducing mute system of the present utility model;

Fig. 2 shows the structural representation of the underground air inlet ditch of the 550 kV substation noise reduction and mute system of the utility model;

Fig. 3 shows the structure diagram of the aluminum alloy ventilation and noise elimination louvers of the 550 kV substation noise reduction and mute system of the present invention;

Fig. 4 is a side sectional view of Fig. 3;

Fig. 5 shows the structural schematic diagram of the wall perforated plate resonant sound-absorbing structure of the 550 kV substation noise reduction and mute system of the present invention;

FIG. 6 is a right side view of FIG. 5 .

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

The utility model 550 kV substation noise reduction and mute system is mainly used in the transformer room of the 550 kV substation, wherein the transformer room has a door body, a wall body, an air inlet window and an air exhaust window, and the door body adopts detachable ventilation and noise reduction Soundproof door, the wall is a sound-absorbing wall, as shown in Figure 1, an underground air inlet channel 1 connected to the outside is dug under the wall of the transformer room, and waterproof treatment is carried out, and protective iron fences are installed, and the air inlet window 2 It is installed at the connection between the underground air inlet channel 1 and the outside. Both the air inlet window 2 and the exhaust window are made of aluminum alloy ventilation and noise-absorbing louvers with aluminum mesh. The underground air inlet channel 1 forms a ventilation shaft 3 on the protruding part of the ground.

Referring to Fig. 2, the detachable ventilation and sound insulation door is composed of multiple panels 5 embedded in the detachable frame 4, the panels 5 are filled with sound-absorbing materials, and the door frame gaps are filled with sealing strips. The sound-absorbing material is made of medium-grade glass wool fiber wrapped in glass cloth, with a volume density of 90kg/m ³ to weaken the standing wave resonance inside the door and suppress the vibration of the door panel. The sealing strip of the door gap is made of EPDM rubber products. The sound insulation of installed ventilation and noise reduction doors is about 30dB. There is a small inspection door 6 on the ventilation and sound insulation door to facilitate daily inspection and maintenance. The outside of the ventilation and noise insulation door is equipped with a steel plate for ships, which has a beautiful appearance. When the user has special requirements, other surface materials can be replaced.

Referring to Figure 3 and Figure 4, the aluminum alloy ventilation and noise reduction shutters include aluminum alloy plates 8 that are stacked with each other and filled with glass fiber noise reduction cotton 7 in the middle, and the aluminum mesh 9 is arranged on the indoor side of the aluminum alloy ventilation and noise reduction shutters. . In addition, the upper surface of the aluminum alloy plate 8 is also coated with a sound-absorbing sheet 10. The sound-absorbing sheet 10 can be a microporous plastic-coated glass fiber sound-absorbing sheet or a resistive sound-absorbing sheet. For a resistive sound-absorbing sheet , when the sound wave passes through the pipe lined with sound-absorbing material, the sound-absorbing material consumes the energy of the sound wave, thereby achieving the effect of noise reduction. The middle part of the aluminum alloy plate 8 is a galvanized aluminum alloy plate, which can prevent acid and corrosion. The aluminum alloy ventilating and silencing louver has a rainproof function and good silencing performance under the condition of ensuring an effective ventilation area of 50% to 60%.

Referring to Fig. 5 and Fig. 6, the sound-absorbing wall is a resonant sound-absorbing structure of a perforated wall. The inner surface is perforated gypsum board 11, which constitutes many parallel Helmholtz resonators, which improves the sound absorption performance of the wall to low-frequency sound and widens the sound absorption frequency band of the structure. The perforated gypsum board 11 is placed about 100mm behind Acrylic cotton 12 has a volume density of 20kg/m ³ to further increase the sound resistance and improve the sound absorption effect. The resonant sound-absorbing structure of the wall perforated plate can increase the noise reduction of the substation by about 24dB.

In addition, the indoor floor of the transformer room is laid with a single-sided concave foam rubber vibration-damping and sound-insulating backing plate. The thickness of the single-sided concave foaming rubber vibration-damping and sound-insulating backing plate is 3mm to 5mm. The vibration-absorbing and sound-insulating pad separates the upper concrete cushion and surface from the wall, which can effectively reduce the impact of equipment on the ground and reduce noise by about 3dB.

As can be seen from the foregoing embodiments, the utility model has the advantages of:

Multiple sound insulation and noise reduction measures are adopted, and the effective monitoring by the environmental monitoring department shows that the noise reduction effect is obvious, and the optimal control of the main equipment of large noise sources such as substations is realized.

The specific embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific embodiments described above, which are only examples. For those skilled in the art, any equivalent modifications and substitutions are also within the scope of the present utility model. Therefore, all equivalent transformations and modifications made without departing from the spirit and scope of the present invention shall fall within the scope of the present invention.

Claims (9)

1. A 550 kV substation noise reduction and quieting system mainly acts on the transformer room of a 550 kV substation, characterized in that the transformer room has a door body, a body of wall, an air intake window and an exhaust window, and the transformer room An underground air inlet channel (1) communicating with the outside is dug under the wall of the chamber, and the air inlet window (2) is arranged at the place where the underground air inlet channel (1) communicates with the outside. The channel (1) forms a ventilation shaft (3) on the protruding part of the ground, the door body adopts a detachable ventilation and sound insulation door, the wall body is a sound-absorbing wall, the air inlet window (2) and the The air exhaust windows are all made of aluminum alloy ventilation and noise-absorbing louvers with aluminum mesh; wherein, the detachable ventilation and noise-absorption sound-insulation door is composed of multiple panels (5) embedded in the detachable frame (4). The interior of the panel (5) is filled with sound-absorbing materials, and the gaps in the door frame are filled with sealing strips. The sound-absorbing wall is a resonant sound-absorbing structure of perforated walls. The aluminum alloy plate (8) of the sound-absorbing cotton (7), the aluminum mesh (9) is arranged on the indoor side of the aluminum-alloy ventilation and sound-absorbing louvers. 2. The 550 kV substation noise reduction and mute system according to claim 1, wherein the sound-absorbing material is made of glass cloth wrapped with intermediate glass wool fibers. 3. The 550 kV substation noise reduction and mute system according to claim 2, characterized in that, the upper surface of the aluminum alloy plate (8) is also coated with a sound-absorbing sheet (10). 4. The 550 kV substation noise reduction and mute system according to claim 2, wherein the middle part of the aluminum alloy plate (8) is a galvanized aluminum alloy plate. 5. The 550 kV substation noise reduction and mute system according to claim 1, wherein the indoor floor of the transformer room is laid with a single-sided concave foam rubber vibration-damping and sound-insulating backing plate. 6. The 550 kV substation noise reduction and mute system according to claim 5, wherein the thickness of the single-sided concave foam rubber vibration-reduction and sound-insulation backing plate is 3 mm to 5 mm. 7. The 550-kilovolt substation noise reduction and mute system according to claim 1, characterized in that a small inspection door (6) is provided on the detachable ventilation and noise reduction and sound insulation door. 8. The 550 kV substation noise reduction and silence system according to claim 7, wherein said detachable ventilation and noise reduction sound insulation door is provided with steel plates for ships. 9. The 550 kV substation noise reduction and mute system according to claim 1, characterized in that, the perforated wall resonant sound absorption structure is composed of perforated gypsum board (11) and acrylic cotton (12).