CN111696769B - Noise suppression device applied to distribution transformer - Google Patents
Noise suppression device applied to distribution transformer Download PDFInfo
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- CN111696769B CN111696769B CN202010579039.9A CN202010579039A CN111696769B CN 111696769 B CN111696769 B CN 111696769B CN 202010579039 A CN202010579039 A CN 202010579039A CN 111696769 B CN111696769 B CN 111696769B
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- 238000013016 damping Methods 0.000 claims abstract description 28
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- 230000035939 shock Effects 0.000 claims description 14
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Regulation Of General Use Transformers (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention relates to the technical field of power equipment monitoring, and discloses a noise suppression device applied to a distribution transformer, which comprises: the noise suppression cover body and the damping base; the damping base is used for bearing the distribution transformer and the noise suppression cover body; the noise suppression cover body is provided with an accommodating space for accommodating the distribution transformer, and an air inlet channel and an air outlet channel which are communicated with the accommodating space and the external space; at least one silencing disc is arranged in the air inlet channel, and an exhaust fan and a silencing disc are arranged in the air outlet channel. According to the invention, the sound absorption disc and the exhaust fan are respectively arranged in the air inlet channel and the air outlet channel, so that heat can be effectively dissipated in time to control the transformer to be in a lower-temperature environment, the vibration frequency of an iron core in the distribution transformer cannot be increased due to overhigh temperature, the noise is reduced, and the gas is discharged in a mute manner after passing through the sound absorption disc in the exhaust process, so that the noise is further reduced. In addition, the invention also utilizes the damping base to perform cushioning and damping, thereby further improving the noise reduction performance.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a noise suppression device applied to a distribution transformer.
Background
In order to effectively guarantee daily electricity utilization in life, a transformer becomes indispensable equipment, and the transformer has the functions of voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) and the like; transformers can be divided into: power transformers and special transformers (furnace transformers, rectification transformers, power frequency test transformers, voltage regulators, mining transformers, audio transformers, intermediate frequency transformers, high frequency transformers, impact transformers, instrument transformers, electronic transformers, reactors, mutual inductors, etc.).
What is important in life and the living environment outside is a distribution transformer, which is a static electrical appliance that transforms alternating current voltage and current according to the law of electromagnetic induction in an electrical distribution system to transmit alternating current energy. Generally, distribution transformer installs on the pole or in the distribution substation, generally can input the user with voltage about 6 ~ 10 kilovolts to 400 volts from the reduction, provides the necessity guarantee to people's daily life power consumption.
Distribution transformer is one of transformer, often because of its action characteristic so the mounted position generally all is the place that is comparatively close to living residential area, but the transformer has great noise when the operation, forms noise pollution, seriously influences living environment, therefore await urgent need provide an effective noise suppression solution.
Disclosure of Invention
The invention aims to provide a noise suppression device applied to a distribution transformer, which aims to solve the problem that the distribution transformer in the prior art seriously influences living and living environments due to the generation of larger noise in the operation process.
In order to achieve the purpose, the invention adopts the following technical scheme:
a noise suppression device for use with a distribution transformer, comprising: the noise suppression cover body and the damping base;
the damping base is used for bearing a distribution transformer and the noise suppression cover body;
the noise suppression cover body is provided with an accommodating space for accommodating the distribution transformer, and an air inlet channel and an air outlet channel which are communicated with the accommodating space and the external space; the air inlet channel is internally provided with at least one silencing disc, and the air outlet channel is internally provided with at least one exhaust fan and at least one silencing disc.
Optionally, the noise suppression cover body comprises a first box body and a second box body;
the second box body is internally provided with the accommodating space; the first box body covers the second box body, and a gap is formed between the first box body and the second box body 3.
Optionally, the gap includes a first spacing space and a second spacing space located on opposite sides of the distribution transformer 1;
the air inlet channel is a cylindrical channel and penetrates through the first spacing space;
the side wall of the second box body is provided with a gas outlet communicated with the accommodating space and the second spacing space, the top wall of the first box body is provided with a gas outlet communicated with the second spacing space and the external space, and the gas outlet, the second spacing space and the gas outlet are sequentially communicated to form the gas outlet channel.
Optionally, the damping base comprises a first damping layer, a second damping layer, a third damping layer and a fourth damping layer which are sequentially stacked from top to bottom.
Optionally, the first shock absorbing layer and the third shock absorbing layer are both filling layers made of elastic particle materials and having a density higher than a specified value; the second shock absorption layer is made of olefin elastomer foaming materials in a filling mode; the fourth damping layer is a spring layer.
Optionally, the spring layer is formed by supporting a plurality of spring rods connected in pairs in a triangular edge-to-ring manner.
Optionally, the silencing plate comprises an outer steel ring made of stainless steel, and a plurality of voice coils are embedded in the outer steel ring.
Optionally, a silencing cover is sleeved on the surface of the exhaust fan.
Optionally, the silencing cover is a polyurethane foam silencing semicircular cover.
Optionally, the first box body and the second box body are both stainless steel box bodies, and glass fiber materials and composite plates cover the inside and the outside of the stainless steel box bodies.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the sound absorption disc and the exhaust fan are respectively arranged in the air inlet channel and the air outlet channel, so that heat can be effectively dissipated in time to control the transformer to be in a lower-temperature environment, the vibration frequency of an iron core in the distribution transformer cannot be increased due to overhigh temperature, the noise is reduced, and the gas is discharged in a mute manner after passing through the sound absorption disc in the exhaust process, so that the noise is further reduced. In addition, the invention also utilizes the damping base to perform cushioning and damping, thereby further improving the noise reduction performance.
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 the drawings without creative efforts.
Fig. 1 is a structural view of a noise suppression device according to an embodiment of the present invention.
Fig. 2 is a schematic view showing the directions of a heat dissipation exhaust path and a damping force buffering path in the noise suppression device according to the embodiment of the present invention.
Fig. 3 is a partially enlarged schematic view of a shock absorbing base according to an embodiment of the present invention.
Description of the figure numbers: a distribution transformer 1; a first case 2; a second case 3; an air inlet channel 4; an air outlet 5; an air outlet channel 6; an exhaust port 7; an exhaust fan 8; a silencing plate 9; an outer steel ring 901; a voice coil 902; a sound-deadening hood 10; a damper base 11; a first shock absorbing layer 1101; a second shock absorbing layer 1102; a third vibration damping layer 1103; a fourth shock-absorbing layer 1104; in the figure, N represents the action direction of force, and S/M represents the wind speed and airflow direction.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to effectively suppress the noise of the distribution transformer, the invention firstly carries out related research on the root of the noise initiation, and experiments show that the 'humming sound' of the distribution transformer is caused by the vibration of various parts in the equipment, and the influencing factors comprise: by the transformer oil in coil winding's metal core, oil tank and the oil tank, the concrete formation process of noise does: the alternating current generates magnetic flux through the coil, so that the magnetic core with the magnetostrictive effect generates mechanical strain; the magnetic core is also rapidly expanded and contracted with the change in the direction of the magnetic flux, and the resulting vibration is transmitted to the attachment point of the oil tank and the magnetic core via the transformer oil, while the alternating current also generates load noise due to the lorentz force in the coil winding.
The noise of a distribution transformer in operation is generally referred to as noise synthesized by the body noise of the transformer and the cooling device noise. Therefore, in order to reduce the noise of the transformer, effective technical measures should be taken from the two aspects:
on one hand, the body noise of the transformer can be controlled by reducing the vibration of the iron core and reducing the noise dispersion capability; the noise can be attenuated in the transmission path by measures such as vibration reduction, sound insulation, sound absorption and the like.
On the other hand, the noise of the cooling system is controlled to be close to or lower than the noise level of the body, and the noise of the transformer can be effectively reduced.
In view of the above, the present invention is to provide a noise suppression device applicable to a distribution transformer 1, and referring to fig. 1 and fig. 2, the noise suppression device includes: a noise-suppressing cover body and a shock-absorbing base 11.
And the damping base 11 is used for bearing the distribution transformer 1 and the noise suppression cover body.
The noise suppression cover body is provided with an accommodating space for accommodating the distribution transformer 1, and an air inlet channel 4 and an air outlet channel 6 which are communicated with the accommodating space and the external space; at least one silencing plate 9 is arranged in the air inlet channel 4, and at least one exhaust fan 8 and at least one silencing plate 9 are arranged in the air outlet channel 6.
The noise suppression device mainly utilizes the air inlet channel 4 and the air outlet channel 6 to realize air flow, and reduces the noise of the transformer caused by the vibration of the iron core due to large load through temperature reduction and heat dissipation; meanwhile, measures such as shock absorption and vibration reduction, sound insulation and sound absorption are carried out by using the shock absorption base 11 to block or reduce noise.
Illustratively, the noise suppression cover body can comprise a first box body 2 and a second box body 3, and a containing space of the distribution transformer 1 is formed in the second box body 3; the first box 2 covers the second box 3, and a gap is formed between the first box 2 and the second box 3, and the gap includes a first spacing space and a second spacing space which are located on two opposite sides of the distribution transformer 1.
The air inlet channel 4 is a cylindrical channel and penetrates through the first spacing space; the lateral wall of the second box body 3 is provided with a gas outlet 5 communicated with the accommodating space and the second spacing space, the top wall of the first box body 2 is provided with a gas outlet 7 communicated with the second spacing space and the external space, and the gas outlet 5, the second spacing space and the gas outlet 7 are sequentially communicated to form a gas outlet channel 6.
A more detailed description is provided below. The damping base 11 surface mounting bears distribution transformer 1, first box 2, second box 3, wholly is the box body form, and distribution transformer 1 covers second box 2, second box 3 outward by inside in proper order, forms one and installs the whole framework of making an uproar that suppresses of distribution transformer 1. Wherein, first box 2 and second box 3 are preferably the stainless steel box, have dustproof syllable-dividing and corrosion-resistant effect, and the stainless steel box is internal and external all to be covered with glass fiber material and high heat resistant composite board. The two boxes are reinforced and thickened by adopting the composite material plate with the glass fiber material and the high heat resistance, the noise reduction effect of the composite material can be effectively absorbed, and the service life of the boxes in the perennial high-temperature environment can be effectively prolonged by fully considering the characteristics of high heat resistance.
Regarding to the implementation mode of using heat dissipation exhaust to realize real-time exhaust cooling of the distribution transformer 1 installed in the noise suppression device, the implementation mode specifically includes:
the same right side of the second box 3 and the first box 2 is provided with an air inlet channel 4 for connecting the two boxes, the air inlet channel 4 is a cylindrical channel with two symmetrical openings at two ends, the air inlet channel 4 enables external air to continuously enter the containing environment of the built-in distribution transformer 1 due to the exhaust operation in the noise suppression device, and the heat dissipation and the temperature reduction are realized by utilizing the air temperature difference and the convection principle.
Meanwhile, a plurality of silencing discs 9 are sequentially arranged in the air inlet channel 4 at equal intervals, so that noise cannot be generated due to air flow friction when external air enters the box body.
The left side face of second box 3 has an air outlet 5, and amortization dish 9 is installed to air outlet 5, and this air outlet 5 is for letting the high temperature air in the accommodating space of distribution transformer 1 discharge in real time in the second box 3, and the installation amortization dish 9 also is for the air current noise reduction of once more.
The air outlet channel 6 is a channel formed by the same left space of the first box 2 and the second box 3, namely a channel formed by the left space of the first box 2 and the second box 3, a first exhaust fan 8, a first silencing cover 10, a plurality of silencing plates 9, a second exhaust fan 8 and a second silencing cover 10 are sequentially installed in the air outlet channel 6 from bottom to top, an air outlet 7 is formed in the top of the first box 2 corresponding to the second silencing cover 10, the silencing cover 10 is sleeved on the surface of the exhaust fan 8, air convection is realized through the operation of the exhaust fan 8, lower temperature continuously and sequentially enters the boxes from the outside of the boxes, passes through the distribution transformer 1, is sequentially and accurately absorbed by the exhaust fan 8 of the air outlet channel 6 and finally is exhausted through the air outlet 7, heat dissipation and cooling are realized, the problem that the distribution transformer 1 can not dissipate heat timely so that the iron core aggravates the running load and the vibration frequency is continuously increased and generates larger noise due to the heat generated by the fact that the high-pressure environmental load running can not be effectively reduced, and through the fixed passageway direction that sets up make the air current pass through amortization dish 9 and amortization cover 10 layer by layer in the convection current discharge process, also through the direction of circulation of air layer by layer scattered ripples including the sound wave that distribution transformer 1 vibrations produced for the noise suppression device in the distribution transformer 1 noise frequency that produces reduces, and the noise greatly reduces.
For the better effect of increaseing the noise reduction, the silence air discharge fan is chooseed for use to air discharge fan 8, and polyurethane foam amortization half circular cover is chooseed for use to amortization cover 10, and amortization dish 9 chooses for use has stainless steel outer steel ring 901, and the sound circle 902 is inhaled to the embedded a plurality of outer steel ring 901, and the material of inhaling sound circle 902 is for inhaling the sound cotton.
Referring to fig. 3, the damper base 11 includes a first damper layer 1101, a second damper layer 1102, a third damper layer 1103, and a fourth damper layer 110 sequentially stacked from top to bottom. Illustratively, the first and third vibration dampers 1101 and 1103 are high-density filling layers formed by elastic particle materials, and can be used as a stable installation base and a vibration damper for cushioning; the second shock absorption layer 1102 is formed by filling a high-elastic shock absorption olefin elastomer foaming material, and has higher shock absorption and shock absorption effects; the fourth buffer layer 1104 is a spring layer, the spring layer is formed by a plurality of spring rods which are connected in pairs and are in triangular edge chain support, a firm and stable base layer can be provided by adopting the spring rods and a three-edge chain support structure, the base layer can also be effectively stressed, when the distribution transformer vibrates due to an iron core, the base is downwards impacted by the force, the base with the four buffer layers can effectively buffer the vibration impact force, the vibration frequency of the distribution transformer is kept to be the lowest, and noise is effectively suppressed.
In summary, the noise suppression device provided by the embodiment of the invention blocks or reduces the noise by measures such as temperature reduction, heat dissipation, noise reduction of the transformer due to large load and vibration increase of the iron core, vibration damping of the damping base, sound insulation, sound absorption and the like, thereby effectively solving the problem of noise pollution of the distribution transformer 1.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A noise suppression device for use with a distribution transformer, comprising: a noise-suppressing cover body and a shock-absorbing base (11);
the damping base (11) is used for bearing a distribution transformer (1) and the noise suppression cover body;
the noise suppression cover body is provided with an accommodating space for accommodating the distribution transformer (1), and an air inlet channel (4) and an air outlet channel (6) which are communicated with the accommodating space and the external space; at least one silencing disc (9) is arranged in the air inlet channel (4), and at least one exhaust fan (8) and at least one silencing disc (9) are arranged in the air outlet channel (6);
the noise suppression cover body comprises a first box body (2) and a second box body (3);
the second box body (3) is internally provided with the accommodating space; the first box body (2) is covered outside the second box body (3), and a gap is formed between the first box body and the second box body (3);
the void comprises a first and a second spaced-apart space on opposite sides of the distribution transformer (1);
the air inlet channel (4) is a cylindrical channel and penetrates through the first spacing space;
the side wall of the second box body (3) is provided with an air outlet (5) communicated with the accommodating space and the second interval space, the top wall of the first box body (2) is provided with an air outlet (7) communicated with the second interval space and the external space, and the air outlet (5), the second interval space and the air outlet (7) are sequentially communicated to form the air outlet channel (6); the utility model discloses a silencer, including exhaust fan (8), air outlet channel (6), air outlet channel (8) is equipped with hush cover (10) on the surface cover of exhaust fan (8), from up installing in proper order down in air outlet channel (6) air outlet fan (8), hush cover (10), a plurality of hush dish (9) exhaust fan (8) hush cover (10), first box (2) are located hush cover (10) correspond the top and open there is gas vent (7).
2. The noise suppression device applied to the distribution transformer according to claim 1, wherein the damping base (11) comprises a first damping layer (1101), a second damping layer (1102), a third damping layer (1103) and a fourth damping layer (1104) which are sequentially stacked from top to bottom.
3. The noise suppressing device applied to a distribution transformer according to claim 2, wherein the first vibration damping layer (1101) and the third vibration damping layer (1103) are each a filling layer made of an elastic particle material and having a density higher than a specified value; the second shock absorption layer (1102) is filled with olefin elastomer foaming materials; the fourth shock absorbing layer (1104) is a spring layer.
4. The noise-suppressing device for distribution transformers as recited in claim 3, wherein said spring layer is formed by a plurality of spring rods connected in pairs and supported in a triangular-side chain.
5. The noise suppressing device applied to the distribution transformer of claim 1, wherein the silencing disc (9) comprises an outer steel ring (901) made of stainless steel, and a plurality of voice absorbing coils (902) are embedded in the outer steel ring (901).
6. Noise-abatement device for distribution transformers according to claim 1, characterized in that the muffling enclosure (10) is a polyurethane foam muffling half-enclosure.
7. Noise suppression device applied to distribution transformers according to claim 1, characterized in that said first tank (2) and said second tank (3) are stainless steel tanks covered both internally and externally with glass fiber material and composite material plates.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579039.9A CN111696769B (en) | 2020-06-23 | 2020-06-23 | Noise suppression device applied to distribution transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010579039.9A CN111696769B (en) | 2020-06-23 | 2020-06-23 | Noise suppression device applied to distribution transformer |
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| CN111696769A CN111696769A (en) | 2020-09-22 |
| CN111696769B true CN111696769B (en) | 2021-07-30 |
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| CN112530686B (en) * | 2020-11-19 | 2022-03-11 | 浙江龙呈电力设备有限公司 | Damping and noise-reducing insulating transformer |
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