CN212991755U - Low-voltage switchgear of type of making an uproar falls - Google Patents

Abstract

The utility model provides a low-voltage switchgear of type of making an uproar falls belongs to distribution equipment technical field. The problem that noise emitted by a fan cannot be well eliminated in the design of the prior art is solved. This low-voltage switchgear of type of making an uproar falls includes the cabinet body, this internal hot-blast conveyer pipe that hangs of cabinet is used for inhaling this internal hot-air admission of cabinet that is equipped with of at least one, be equipped with a plurality of hot-blast inlet holes along its axial direction interval on the hot-blast conveyer pipe, and at least one through being used for with this internal cold wind conveyer pipe of outside air input cabinet of cabinet body bottom and external intercommunication, be equipped with a plurality of cold wind along its axial direction interval on the cold wind conveyer pipe and egress, the one end that hot-blast conveyer pipe and cold wind conveyer pipe are adjacent stretches into respectively and hangs in the amortization box of locating the internal central part of cabinet and. This low-voltage switchgear of type of making an uproar falls's advantage lies in: the suction fan is independently arranged in the silencing box positioned in the central part of the cabinet body, so that the intensity of noise emitted by the switch cabinet is effectively reduced.

Description

Low-voltage switchgear of type of making an uproar falls

Technical Field

The utility model belongs to the technical field of distribution equipment, especially a low-voltage switchgear for assembling low-voltage distribution device.

Background

The low-voltage switch cabinet is one of the most common devices in the electrical industry, is suitable for power distribution systems of power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and other industries, and is used for power transmission, power distribution and electric energy conversion.

For the convenience of operation, low-voltage switchgear cabinets are usually installed indoors, for which reason a fan is usually installed in the switchgear cabinet to remove heat, since the electrical components in the switchgear cabinet emit a large amount of heat during operation, and for the purpose of increasing the heat removal speed, the fan must be replaced by a fan with a higher power.

And a large part of noise generated on the switch cabinet comes from the fan.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solve at least partly low-voltage switchgear in above-mentioned problem.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model discloses a low-voltage switchgear of type of making an uproar falls, including the cabinet body, a serial communication port, this internal at least hot-blast conveyer pipe that is used for inhaling this internal hot-air admission of cabinet that hangs of cabinet, the last axial direction interval that follows of hot-blast conveyer pipe is equipped with a plurality of hot-blast inlet holes, and at least one through being used for of cabinet body bottom and external intercommunication with this internal cold wind conveyer pipe of external air input cabinet, be equipped with a plurality of cold wind along its axial direction interval on the cold wind conveyer pipe and portal, the one end that hot-blast conveyer pipe and cold wind conveyer pipe are adjacent stretches into respectively and hangs in the amortization box of making by sound absorbing material of locating the internal central part of cabinet, all be located and all be equipped with the induced-draught fan on the port of hot-blast conveyer pipe and cold wind.

In the noise-reduction low-voltage switch cabinet, the exhaust pipe is coated with a sound absorption layer made of a sound absorption material.

In the noise reduction type low-voltage switch cabinet, the exhaust pipe is in a conical structure, the area of the port adjacent to the silencing box is small, and the area of the corresponding other port is large.

In the noise-reduction low-voltage switch cabinet, a flow baffle plate for slowing down the wind speed is arranged in the exhaust pipe.

In the noise reduction type low-voltage switch cabinet, the distance between the hot air inlet holes is gradually increased downwards along the longitudinal direction of the hot air conveying pipe.

In the noise reduction type low-voltage switch cabinet, the distance between the cold air outlets is gradually increased upwards along the longitudinal direction of the hot air delivery pipe.

In the noise reduction type low-voltage switch cabinet, one end of the hot air delivery pipe, which is far away from the silencing box, is communicated with the inside of the cabinet body.

In the noise reduction type low-voltage switch cabinet, the silencing box is of a hollow spherical structure.

Compared with the prior art, this low-voltage switchgear of type of making an uproar falls's advantage lies in: the suction fan is independently arranged in the silencing box positioned in the central part of the cabinet body, so that the intensity of noise emitted by the switch cabinet is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 provides a schematic structural diagram of the inside of the cabinet body according to an embodiment of the present invention.

Fig. 2 provides a side view schematic of fig. 1.

Fig. 3 provides a schematic structural view of the inside of the cabinet body according to another embodiment of the present invention.

Fig. 4 provides a schematic cross-sectional view of the exhaust pipe, the flow baffle, and the sound absorbing layer in an embodiment of the present invention.

In the figure, a cabinet body 1, a hot air delivery pipe 2, a hot air inlet 21, a cold air delivery pipe 3, a cold air outlet 31, a silencing box 4, an air suction fan 5, an exhaust pipe 6, a flow baffle 7, a sound absorption layer 8, a support rod 9, a waterproof cover 10 and an exhaust fan 11.

Detailed Description

The present invention will be described in further detail below with reference to the accompanying drawings and by way of examples, wherein the following examples are for explaining the present invention and the present invention is not limited to the following examples.

As shown in fig. 1 to 2, in one or some embodiments, the noise reduction type low-voltage switch cabinet comprises a cabinet body 1, at least one hot air delivery pipe 2 for sucking hot air in the cabinet body 1 is suspended in the cabinet body 1, a plurality of hot air inlet holes 21 are arranged on the hot air delivery pipe 2 at intervals along the axial direction thereof, and at least one through cabinet body 1 bottom with external intercommunication be used for with the cold wind conveyer pipe 3 in the external air input cabinet body 1, be equipped with a plurality of cold wind porours 31 along its axial direction interval on the cold wind conveyer pipe 3, hot-blast conveyer pipe 2 and the adjacent one end of cold wind conveyer pipe 3 stretch into respectively and hang the amortization box 4 of making by sound absorbing material of locating the cabinet body 1 internal central part, all be located and all be equipped with the induced-draft fan 5 on the port of hot-blast conveyer pipe 2 and the cold wind conveyer pipe 3 in the amortization box 4, the intercommunication has the blast pipe 6 that is used for carrying its interior air to external world on the amortization box 4.

It should be noted that the sound-absorbing material used for manufacturing the sound-deadening box 4 is mostly a porous material, and can be divided into a porous sound-deadening material, an inorganic fiber material, an inorganic foam sound-deadening material, a foam plastic material, a polystyrene material, and an organic fiber sound-deadening material, specifically, mineral wool, a blanket, a wave-peak sponge, and foam rubber, and the sound-absorbing mechanism is that sound waves go deep into pores of the material, and the pores are mostly open pores with mutually communicated interiors, and are subjected to air molecular friction and viscous resistance, and fine fibers are mechanically vibrated, so that sound energy is converted into heat energy. The silencing coefficient of the porous silencing material generally increases gradually from low frequency to high frequency, so the porous silencing material has better silencing effect on high and medium frequency sound.

In addition, as shown in fig. 1 to 3, since the sound-absorbing box 4 is disposed at the inner center of the cabinet body 1, it is not directly contacted with the cabinet body 1, and the inner and outer two-layer structure composed of the sound-absorbing box 4 and the cabinet body 1 is advantageous to enhance the sound-absorbing effect of the noise generated by the operation of the suction fan 5.

In one or some embodiments shown in fig. 1 to 3, an exhaust fan 11 is provided at the port of the exhaust duct 6 in the sound-deadening box 4 to accelerate the exhaust of the air in the sound-deadening box 4 to the outside.

In one or some embodiments as shown in fig. 3, the number of the exhaust pipes 6 is set to two, so that the hot air in the cabinet body 1 is exhausted at high speed.

In one or some embodiments, the silencing box 4 is formed in a spherical structure so that the silencing box 4 made of a sound-absorbing material can absorb noise emitted from the suction fan 5 in 360 degrees without dead space.

In order to reduce the noise emitted by the exhaust pipe 6 during the exhaust process, in one or more embodiments, a sound absorbing layer 8 made of one or more of the sound absorbing materials described above is applied to the exhaust pipe 6.

In order to reduce the wind speed and to reduce the noise generated by the friction between the flowing gas and the exhaust pipe, in one or some embodiments, the exhaust pipe 6 is provided with a conical structure, the area of the port adjacent to the silencing box 4 is small, the area of the corresponding other port is large, and in another or some embodiments, as shown in fig. 4, a baffle plate 7 for reducing the wind speed is further arranged in the exhaust pipe 6.

In order to enhance the hot air suction effect and finally gather at the top of the cabinet body 1 due to the upward movement of the hot air, as shown in fig. 1 to 3, in one or some embodiments, the distance between the hot air inlet holes 21 is gradually increased along the longitudinal direction of the hot air delivery pipe 2, and in another or some embodiments, the opposite upper end of the hot air delivery pipe 2 is communicated with the inside of the cabinet body 1.

In order to enhance the cold air discharge effect and increase the heat exchange time with the cabinet body 1 as the cold air is discharged earlier, as shown in fig. 1 to 3, in one or some embodiments, the distance between the cold air outlets 31 is gradually increased upward along the longitudinal direction of the hot air delivery pipe 2.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the cabinet body 1, the hot air delivery pipe 2, the hot air inlet hole 21, the cold air delivery pipe 3, the cold air outlet hole 31, the sound-deadening box 4, the suction fan 5, the exhaust pipe 6, the flow baffle 7, the sound-absorbing layer 8, the support bar 9, the waterproof cover 10, the exhaust fan 11, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (8)

1. A noise reduction type low-voltage switch cabinet comprises a cabinet body (1) and is characterized in that at least one hot air conveying pipe (2) used for sucking hot air in the cabinet body (1) is arranged in the cabinet body (1) in a hanging mode, a plurality of hot air inlet holes (21) are formed in the hot air conveying pipe (2) at intervals along the axial direction of the hot air conveying pipe, at least one cold air conveying pipe (3) communicated with the outside through the bottom of the cabinet body (1) and used for inputting outside air into the cabinet body (1), a plurality of cold air outlet holes (31) are formed in the cold air conveying pipe (3) at intervals along the axial direction of the cold air conveying pipe, one ends, adjacent to each other, of the hot air conveying pipe (2) and the cold air conveying pipe (3) respectively extend into a sound attenuation box (4) made of sound absorption materials and arranged in the central portion of the cabinet body (1), air suction fans (5) are arranged at ports of the hot air conveying pipe (2) and the cold air conveying pipe (3, the silencing box (4) is communicated with an exhaust pipe (6) used for conveying air in the silencing box to the outside.

2. A low-voltage switchgear cabinet of noise-reducing type according to claim 1, characterized in that said exhaust duct (6) is coated with a sound-absorbing layer (8) made of sound-absorbing material.

3. A noise-reducing low-voltage switch cabinet according to claim 1, characterized in that the exhaust pipe (6) has a conical structure, and the area of the port adjacent to the silencing box (4) is small, and the area of the corresponding other port is large.

4. A low-voltage switchgear cabinet of noise reduction type according to claim 1, wherein the air exhaust pipe (6) is provided with a baffle plate (7) for reducing the wind speed.

5. The noise reduction type low-voltage switch cabinet according to claim 1, wherein the distance between the hot air inlet holes (21) is gradually increased downwards along the longitudinal direction of the hot air delivery pipe (2).

6. The noise reduction type low voltage switch cabinet according to claim 1, wherein the distance between the cool air outlet holes (31) is gradually increased upward along the longitudinal direction of the hot air delivery pipe (2).

7. The noise-reduction low-voltage switch cabinet according to claim 1, characterized in that one end of the hot air delivery pipe (2) far away from the silencing box (4) is communicated with the interior of the cabinet body (1).

8. A noise-reducing low-voltage switchgear cabinet as claimed in claim 1, characterized in that said silencing box (4) is of hollow spherical structure.

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