Noise reduction device of prefabricated substation

Abstract

The utility model discloses a noise reduction device of a prefabricated substation, which relates to the technical field of noise reduction of substations and comprises a device shell. The front end of the device shell is fixedly connected with a cabinet door, and the bottom of the device shell is fixedly connected with a fixed base. The fixed base is installed at the bottom of the device shell, the honeycomb plate is arranged in the middle of the fixed base, and the hexagonal holes are formed in the honeycomb plate, so that the honeycomb plate and the fixed base are provided with a large number of closed hole cavities, obstruction of sound transmission is formed, and when sound is transmitted to the inner wall of the honeycomb plate through the honeycomb plate, the sound can be transmitted to the inner wall of the honeycomb plate. When the transformer substation vibrates during working, the transformer substation vibrates back and forth in all the small honeycombs, equivalently, multiple layers of sound insulation plates are added, and the I-shaped base located on the periphery of the honeycomb plate is of an I-shaped elastic structure, is as high as the honeycomb plate and is located between the fixed bases, so that when the transformer substation vibrates during working, part of potential energy is absorbed through the I-shaped base; and noise generated by the transformer substation is reduced through cooperation with the cellular board.

Description

TECHNICAL FIELD

[0001] The utility model relates to substation noise reduction technical field, concretely relates to a kind of noise reduction device of prepackaged substation. BACKGROUND

[0002] Outdoor prepackaged substation is a loop network type and terminal type power distribution device, and the prepackaged substation can be used as a loop network type and terminal type power distribution device, and is widely used in outdoor places such as residential areas, industrial and mining enterprises, hotels, hospitals, shopping malls, airports, parks and railways.

[0003] The current prepackaged substation has poor noise reduction effect, and the installation process is very time-consuming. The noise generated during the operation of the prepackaged substation greatly affects the rest of the surrounding people. Therefore, a prepackaged substation noise reduction device that is easy to install and has good noise reduction effect is needed to reduce the noise generated during the operation of the prepackaged substation.

[0004] Chinese patent document discloses a prepackaged substation noise reduction device (publication number CN214044713U), which includes a box, the box is fixedly connected with hinges on both sides of the front face, the hinges are multiple, the box is fixedly connected with a box door through the hinges, a noise reduction plate is fixedly connected between the top inner wall and the bottom inner wall of the box, the inner walls of the box on both sides of the noise reduction plate are respectively provided with a damping sound insulation plate and a sound absorption plate, the damping sound insulation plate and the sound absorption plate are clamped with the inner walls of the box through guide rods, and the guide rods are multiple; But there are still the following defects in the implementation process:

[0005] The device in the above document can eliminate the noise generated during the operation of the prepackaged substation by adding the damping sound insulation plate, the sound absorption plate and the noise reduction plate. The first clamping plate, the second clamping plate and the guide rod are added to realize the quick installation of the damping sound insulation plate and the sound absorption plate, and solve the problems of poor noise reduction effect and slow installation speed of the existing prepackaged substation. However, the device in the above document generates strong magnetic force when the voltage conversion equipment is in use, which causes a certain degree of disturbance to the internal metal structure, making the equipment prone to generate a large amount of noise during use. The noise of the substation will have a negative impact on the daily life of the surrounding users. At present, noise reduction of the substation is mostly achieved by setting a noise reduction box outside the substation or setting a noise reduction baffle outside the residential area. The noise reduction method is relatively single, and the noise reduction effect is not very obvious. UTILITY MODEL CONTENTS

[0006] The utility model aims to provide a noise reduction device for a prepackaged substation to solve the problem of noise generated by the equipment during use as described in the background.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] The utility model provides a noise reduction device of prefilled transformer substation, including device shell, the front end fixed connection of device shell has the cabinet door, the bottom fixed connection of device shell has fixed base, the top fixed connection of fixed base has honeycomb board, a plurality of hexagonal hole are opened in honeycomb board, the top fixed connection of fixed base has a plurality of H -shaped base.

[0009] Adopt above technical scheme, this scheme in fixed base installation in the bottom of device shell, and be provided with honeycomb board at the middle position of fixed base, the inside of honeycomb board is opened a plurality of hexagonal hole, make honeycomb board and fixed base have a large number of closed cavities, form the hindrance of sound propagation.

[0010] The utility model discloses a further improvement lies in that: the inner side wall of device shell is fixedly connected with exhaust ducts symmetrically, the inside of exhaust duct is provided with cooling fan, the side close to cooling fan of exhaust duct is provided with limit sliding slot, the inner side wall of limit sliding slot is fixedly connected with buffer plate symmetrically, a plurality of first notches are formed in the inner side wall of buffer plate, cooling fan is fixedly connected with buffer plate, and the bottom of exhaust duct is fixedly connected with breathable plate.

[0011] Adopt above technical scheme, this scheme when cooling fan produces vibration, buffer plate can also deform under the action of first notch, thereby can absorb the potential energy of vibration, and further reduce the decibel of noise.

[0012] The utility model discloses a further improvement lies in that: the both sides of cooling fan are fixedly connected with support plate, the side close to exhaust duct of support plate is fixedly connected with limit base, and the top of support plate and limit base is provided with weakening groove.

[0013] Adopt above technical scheme, this scheme the surface of support plate and limit base of both sides of cooling fan is provided with weakening groove, therefore when cooling fan works and vibrates, utilize weakening groove to make support plate and limit base deform, and absorb part of the potential energy of vibration.

[0014] The utility model discloses a further improvement lies in that: the both sides of support plate are rotatably connected with limit strip, the both ends of limit strip are fixedly connected with spring, and the bottom of limit strip is slidably connected with the inner side wall of exhaust duct.

[0015] Adopt above technical scheme, this scheme limit strip in support plate can move to both sides, and cooperate spring to further absorb part of the potential energy of vibration when cooling fan works, effectively reduce the noise when cooling fan works.

[0016] The utility model discloses a further improvement lies in that: the both sides close to exhaust duct of device shell are fixedly connected with dust baffle, and the bottom of dust baffle is fixedly connected with drain groove.

[0017] By using the above technical scheme, the drainage groove can drain rainwater in rainy days, thereby protecting the internal components from being damaged.

[0018] Further improvement of the technical scheme of the utility model lies in that the bottom of the dust baffle is provided with sound insulation cotton, and the inside of the dust baffle is arranged in an inclined manner.

[0019] By using the above technical scheme, the inside of the dust baffle is arranged in a downward inclined manner, and the sound insulation cotton at the bottom can further reduce the propagation of noise, and the inclined arrangement can block rainwater from entering in rainy days.

[0020] Further improvement of the technical scheme of the utility model lies in that the I-shaped base is an I-shaped elastic structure.

[0021] By using the above technical scheme, the I-shaped base located around the honeycomb plate is an I-shaped elastic structure, has the same height as the honeycomb plate and is located between the fixed bases, when the substation works generate vibration, part of potential energy is absorbed by the I-shaped base, and then the noise generated by the substation is reduced in cooperation with the honeycomb plate.

[0022] Due to the use of the above technical scheme, the utility model has the following technical progress compared with the prior art:

[0023] 1、The utility model provides a noise reduction device of prefabricated substation, is installed in the bottom of device shell through the fixed base being set up, and is provided with the honeycomb plate at the middle position of the fixed base, a plurality of hexagonal holes are set up in the inside of the honeycomb plate, make the honeycomb plate and fixed base have a large number of closed cavities, form the hindrance of sound propagation, when the sound is transmitted to the inner wall through the honeycomb plate, will vibrate in each small honeycomb, equivalent to increase the multilayer sound insulation board, the consumption of sound energy will be bigger, thereby effectively absorbs and blocks the sound propagation, need to note that the I-shaped base located around the honeycomb plate is an I-shaped elastic structure, has the same height as the honeycomb plate and is located between the fixed bases, when the substation works generate vibration, part of potential energy is absorbed by the I-shaped base, and then the noise generated by the substation is reduced in cooperation with the honeycomb plate.

[0024] 2. The utility model provides a prepackaged substation's noise reduction device, can effectively reduce the temperature inside the device shell through the heat dissipation fan of setting, in the use process, the support plate and the spacing base surface of both sides of heat dissipation fan are all seted with weakening groove, therefore, when heat dissipation fan work vibration, utilize weakening groove and make support plate and spacing base produce deformation, absorb part vibration potential energy, the spacing strip in support plate can move to both sides at this moment, and cooperate spring further absorbs part potential energy produced when heat dissipation fan works, effectively reduce the noise produced when heat dissipation fan works, need to pay attention to, both sides of heat dissipation fan top and bottom are all and the buffer plate is pasted, still be equipped with a notch in the inside of buffer plate, when heat dissipation fan produces vibration, buffer plate can also produce deformation under the action of a notch, thereby can absorb the potential energy produced by vibration, and further reduce the decibel of noise.

[0025] 3. The utility model provides a prepackaged substation's noise reduction device is connected with the exhaust duct to export hot gas by setting dust baffle, and the dust baffle inside baffle is set to downward inclination, and the soundproofing cotton at bottom can further reduce the spread of noise, and the inclined setting can block rainwater from entering under the condition of rainy day, and rainwater is discharged under the action of the drain groove, and the internal element is protected from being damaged. DRAWINGS

[0026] The utility model will be further described below in connection with the drawings.

[0027] Figure 1 It is the whole structure schematic diagram of the utility model;

[0028] Figure 2 It is the bottom structure schematic diagram of the utility model;

[0029] Figure 3 It is the cross section solid structure schematic diagram of device shell in the utility model;

[0030] Figure 4 It is the solid structure schematic diagram of cooperation of honeycomb board and I -beam base in the utility model;

[0031] Figure 5 It is the cross section solid structure schematic diagram of exhaust duct in the utility model;

[0032] Figure 6 It is the solid structure schematic diagram of cooperation of heat dissipation fan and support plate in the utility model;

[0033] Figure 7 It is the whole structure schematic diagram of dust baffle in the utility model.

[0034] In the figure: 1, device shell; 2, cabinet door; 3, dust shield; 4, fixed base; 5, honeycomb plate; 6, exhaust duct; 7, cooling fan; 8, No. 1 notch; 9, air-permeable plate; 10, I-shaped base; 11, limiting sliding groove; 12, buffer plate; 13, support plate; 14, limiting base; 15, limiting strip; 16, spring; 17, drain groove. DETAILED DESCRIPTION

[0035] The utility model will be further described in detail in connection with the embodiments below:

[0036] Embodiment 1

[0037] As shown in Figure 2 , Figure 3 and Figure 4 , the utility model provides a noise reduction device of prefabricated substation, including device shell 1, the front end fixed connection of device shell 1 has cabinet door 2, the bottom fixed connection of device shell 1 has fixed base 4, the top fixed connection of fixed base 4 has honeycomb plate 5, and a plurality of hexagonal holes are seted up in honeycomb plate 5, and the top fixed connection of fixed base 4 has a plurality of I-shaped bases 10, and I-shaped base 10 is in the shape of I elastic structure.

[0038] In this embodiment, in the process of using prefabricated substation, because the internal structure produces vibration in the working process, it leads to large noise, therefore, the fixed base 4 installed at the bottom of device shell 1 is set, and the honeycomb plate 5 is set at the middle position of fixed base 4, a plurality of hexagonal holes are seted up in the inside of honeycomb plate 5, so that honeycomb plate 5 and fixed base 4 have a large number of closed cavities, which form an obstacle to sound propagation, when sound is transmitted to the inner wall of honeycomb plate 5, it will vibrate back and forth in each small honeycomb, which is equivalent to increasing the number of sound insulation boards, and the consumption of sound energy will be larger, thereby effectively absorbing and blocking sound propagation, it should be noted that the I-shaped base 10 around the honeycomb plate 5 is in the shape of I elastic structure, which is the same height as the honeycomb plate 5 and is located between the fixed base 4, when the substation works and produces vibration, part of the potential energy is absorbed by the I-shaped base 10, and then cooperates with the honeycomb plate 5 to reduce the noise generated by the substation.

[0039] Embodiment 2

[0040] As shown in Figure 3 , Figure 5 and Figure 6As shown, on the basis of embodiment 1, the utility model provides a technical scheme: preferably, the inside wall of device shell 1 is fixedly connected with exhaust duct 6 symmetrically, the inside of exhaust duct 6 is provided with heat dissipation fan 7, the side of exhaust duct 6 close to heat dissipation fan 7 is provided with limit sliding slot 11, the inside wall of limit sliding slot 11 is fixedly connected with buffer plate 12 symmetrically, the inside wall of buffer plate 12 is provided with a plurality of first notches 8, heat dissipation fan 7 is fixedly connected with buffer plate 12, the bottom of exhaust duct 6 is fixedly connected with air-permeable plate 9, the both sides of heat dissipation fan 7 are fixedly connected with support plate 13, the side of support plate 13 close to exhaust duct 6 is fixedly connected with limit base 14, the top of support plate 13 and limit base 14 is provided with weakening groove, the both sides of support plate 13 are rotatably connected with limit strip 15, the both ends of limit strip 15 are fixedly connected with spring 16, the bottom of limit strip 15 and the inside wall of exhaust duct 6 are slidably connected.

[0041] Because the substation will cause its internal temperature to be higher after long time work, will install fan to reduce its internal temperature, to protect internal element not to be damaged, however fan will produce larger noise when working, further cause substation noise to be larger.

[0042] In the embodiment, the temperature inside the device shell 1 can be effectively reduced by the heat dissipation fan 7, and the weakening grooves are provided on the surfaces of the support plates 13 and the limit base 14 on both sides of the heat dissipation fan 7 during use. Therefore, when the heat dissipation fan 7 vibrates during work, the support plates 13 and the limit base 14 are deformed by the weakening grooves to absorb part of the potential energy of the vibration. At this time, the limit strips 15 inside the support plates 13 can move to both sides, and cooperate with the springs 16 to further absorb part of the potential energy generated during the work of the heat dissipation fan 7, effectively reducing the noise generated during the work of the heat dissipation fan 7. It should be noted that the top and bottom of the heat dissipation fan 7 are attached to the buffer plate 12, and the first notches 8 are also provided in the buffer plate 12. When the heat dissipation fan 7 vibrates, the buffer plate 12 can also be deformed under the action of the first notches 8, so as to absorb the potential energy generated by the vibration, thereby reducing the decibels of the noise.

[0043] As shown in Figure 1 , Figure 2 and Figure 7 , the both sides of the device shell 1 close to the exhaust duct 6 are fixedly connected with the dustproof plate 3, the bottom of the dustproof plate 3 is fixedly connected with the drain groove 17, the bottom of the dustproof plate 3 is provided with soundproof cotton, and the inside of the dustproof plate 3 is provided in an inclined manner.

[0044] Since the substation can be under the action of cooling fan 7 to reduce the internal temperature, the dust screen 3 is connected with the exhaust duct 6 to discharge hot air, the internal baffle of the dust screen 3 is inclined downward, and the sound insulation cotton at the bottom can further reduce the spread of noise. At the same time, the inclined setting can block rainwater from entering in rainy weather and discharge rainwater under the action of the drainage groove 17, protecting the internal elements from damage.

[0045] The working principle of the noise reduction device of the prefabricated substation is specifically described below.

[0046] As shown in Figures 1-7 , in use, first use the honeycomb plate 5 in the middle position of the fixed base 4. The honeycomb plate 5 is internally provided with a plurality of hexagonal holes, so that the honeycomb plate 5 and the fixed base 4 have a large number of closed cavities, forming an obstacle to sound propagation. When sound is transmitted to the inner wall of the honeycomb plate 5, it will vibrate back and forth in each small honeycomb, which is equivalent to increasing the number of sound insulation boards. The consumption of sound energy will be larger, thereby effectively absorbing and blocking sound propagation. It should be noted that the I-shaped base 10 around the honeycomb plate 5 is an I-shaped elastic structure with the same height as the honeycomb plate 5 and is located between the fixed base 4. When the substation works and generates vibration, part of the potential energy is absorbed by the I-shaped base 10, and then the honeycomb plate 5 reduces the noise generated by the substation. The use of the cooling fan 7 can effectively reduce the temperature inside the device housing 1. During use, the surfaces of the support plates 13 and the limiting bases 14 on both sides of the cooling fan 7 are provided with weakening grooves. Therefore, when the cooling fan 7 works and vibrates, the weakening grooves make the support plates 13 and the limiting bases 14 deform, absorbing part of the potential energy of the vibration. At this time, the limiting strips 15 inside the support plates 13 can move to both sides and cooperate with the springs 16 to further absorb part of the potential energy generated when the cooling fan 7 works, effectively reducing the noise generated when the cooling fan 7 works. It should be noted that the two sides of the cooling fan 7 at the top and the bottom are attached to the buffer plate 12. A No. 8 slot is also provided in the inside of the buffer plate 12. When the cooling fan 7 vibrates, the buffer plate 12 can also deform under the action of the No. 8 slot, thereby absorbing the potential energy generated by the vibration and reducing the decibels of the noise. It should be noted that the dust screen 3 is connected with the exhaust duct 6 to discharge hot air. The internal baffle of the dust screen 3 is inclined downward, and the sound insulation cotton at the bottom can further reduce the spread of noise. At the same time, the inclined setting can block rainwater from entering in rainy weather and discharge rainwater under the action of the drainage groove 17, protecting the internal elements from damage.

[0047] The utility model has made the detailed description to the utility model generally above, but can make some modification or improvement to it on the basis of the utility model, this is obvious to the general skilled person in the technical field. Therefore, the modification or improvement without departing from the utility model thought spirit, all are within the protection scope of the utility model.

Claims

1. A noise reduction device for a prepackaged electrical substation, comprising a device housing (1); characterized in that: The front end of the device shell (1) is fixedly connected with the cabinet door (2), the bottom of the device shell (1) is fixedly connected with the fixed base (4), the top of the fixed base (4) is fixedly connected with the honeycomb plate (5), a plurality of hexagonal holes are formed in the honeycomb plate (5), and a plurality of I-shaped bases (10) are fixedly connected to the top of the fixed base (4).

2. The noise reduction device of a prepackaged electrical substation according to claim 1, characterized in that: The inner side wall of the device shell (1) is fixedly connected with the exhaust duct (6) symmetrically, the inside of the exhaust duct (6) is provided with the heat dissipation fan (7), the side of the exhaust duct (6) close to the heat dissipation fan (7) is provided with the limiting sliding groove (11), the inner side wall of the limiting sliding groove (11) is fixedly connected with the buffer plate (12) symmetrically, a plurality of first notches (8) are formed in the inner side wall of the buffer plate (12), the heat dissipation fan (7) and the buffer plate (12) are fixedly connected, and the bottom of the exhaust duct (6) is fixedly connected with the breathable plate (9).

3. The noise reduction device of a prepackaged electrical substation of claim 2, wherein: The both sides of the heat dissipation fan (7) are fixedly connected with the supporting plate (13), the side of the supporting plate (13) close to the exhaust duct (6) is fixedly connected with the limiting base (14), and the top of the supporting plate (13) and the limiting base (14) is provided with the weakening groove.

4. The noise reduction device of a prepackaged electrical substation of claim 3, wherein: The both sides of the supporting plate (13) are rotatably connected with the limiting strip (15), the both ends of the limiting strip (15) are fixedly connected with the spring (16), and the bottom of the limiting strip (15) and the inner side wall of the exhaust duct (6) are slidably connected.

5. A noise reduction device for a prepackaged electrical substation according to claim 4, characterized in that: The both sides of the device shell (1) close to the exhaust duct (6) are fixedly connected with the dust screen (3), and the bottom of the dust screen (3) is fixedly connected with the drainage groove (17).

6. A noise reduction device for a prepackaged electrical substation according to claim 5, characterized in that: The bottom of the dust screen (3) is provided with soundproof cotton, and the inside of the dust screen (3) is inclined.

7. The noise reduction device of a prepackaged electrical substation of claim 1, wherein: The I-shaped base (10) is in the shape of I-shaped elastic structure.

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