CN113707417B - High-barrier-rate noise reduction device for distribution transformer - Google Patents
High-barrier-rate noise reduction device for distribution transformer Download PDFInfo
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- CN113707417B CN113707417B CN202110997631.5A CN202110997631A CN113707417B CN 113707417 B CN113707417 B CN 113707417B CN 202110997631 A CN202110997631 A CN 202110997631A CN 113707417 B CN113707417 B CN 113707417B
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- shock absorber
- shock
- transformer
- compression spring
- stage
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Classifications
-
- 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
-
- 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
- F16F15/022—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 dampers and springs in combination
-
- 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
- F16F15/046—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 using combinations of springs of different kinds
-
- 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
-
- 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
Abstract
The invention discloses a high-barrier-rate power distribution transformer noise reduction device which comprises two damping cross beams, first-stage dampers, second-stage dampers and fourth-stage dampers, wherein the two damping cross beams are symmetrically arranged left and right, the bottom of each damping cross beam is supported by a plurality of fourth-stage dampers, two second-stage dampers are symmetrically arranged on each damping cross beam front and back, the number of the first-stage dampers is four, the first-stage dampers are respectively arranged in four ends of bottom grooves of two transformer channel steel, and each second-stage damper penetrates through the damping cross beam and the transformer channel steel to be connected to the first-stage dampers through screws and hangs the transformer channel steel. The four-stage shock absorber is connected to the shock absorbing cross beam through screws. The transformer noise reduction device has the advantages that the noise of the transformer can be greatly reduced after multistage shock absorption, the shock absorption and noise reduction effects are better, the noise generated by the vibration of the transformer can be eliminated by more than 98%, the noise pollution is reduced, the normal life state of people is not influenced, the noise reduction device is low in cost, easy to assemble and disassemble, simple to install, in a modularized structure and convenient to carry.
Description
Technical Field
The invention relates to a noise reduction device of a distribution transformer with high blocking rate, and belongs to the technical field of noise reduction equipment of distribution transformers.
Background
With the development of modern construction, noise pollution of a power distribution room has become a common problem affecting the life quality of residents, and low-frequency noise generated by a transformer is a main component of the noise of the power distribution room.
The vibration and noise reduction devices mainly used at present are three types of spring vibration dampers, rubber vibration dampers and gas spring vibration dampers, wherein the spring vibration dampers are very effective products for impact vibration, but have poor effects for vibration with the frequency exceeding 10Hz, are basically ineffective for vibration with medium and high frequencies, and are not only ineffective but also bridges (sound bridges) for conducting sound waves for vibration (noise) in the hearing range of people; the vibration isolation and noise reduction effects of the rubber shock absorber are also not ideal due to different manufacturing processes and different hardness; the gas spring vibration damper has better vibration isolation, noise reduction and sound insulation effects than the former two in theory, but the gas spring has better low-frequency vibration isolation and noise reduction effects below 35Hz due to the fact that the air bag forms a resonant cavity, but the effects are not ideal in transformer noise treatment (the noise frequency of a 10kV transformer is the frequency multiplication of 50Hz, and the frequency spectrum area of 100-500 Hz). And the later-stage inflation maintenance workload is large. This is why all damping products currently do not manage the noise thoroughly through the structure propagation (solid sound transmission). .
Therefore, the noise reduction device for the distribution transformer with high blocking rate can effectively reduce low-frequency noise generated by the transformer, is low in cost, easy to carry, environment-friendly, simple to install and capable of greatly saving installation cost.
Disclosure of Invention
The invention aims to solve the technical problems that: a noise reduction device for a distribution transformer with high blocking rate is provided to solve the problems in the prior art.
The technical scheme adopted by the invention is as follows: the utility model provides a distribution transformer noise reduction device of high separation rate, including shock attenuation crossbeam, one-level bumper shock absorber, second grade bumper shock absorber and fourth grade bumper shock absorber, the shock attenuation crossbeam adopts two, bilateral symmetry arranges, and every shock attenuation crossbeam bottom is supported through a plurality of fourth grade bumper shock absorbers, and two second grade bumper shock absorbers are installed to the symmetry around on every shock attenuation crossbeam, and one-level bumper shock absorber adopts four, installs respectively in the bottom groove four of two transformer channel-section steel, and every second grade bumper shock absorber passes shock attenuation crossbeam and transformer channel-section steel through the screw rod and is connected to one-level bumper shock absorber and unsettled with the transformer channel-section steel. The four-stage shock absorber is connected to the shock absorbing cross beam through screws.
Preferably, the noise reduction device for the distribution transformer with high blocking rate further comprises a third-stage shock absorber, wherein the third-stage shock absorber is arranged between the shock absorption cross beam and the second-stage shock absorber.
Preferably, the bottom of the four-stage shock absorber is placed in a groove of a shock absorber base channel steel, and the shock absorber base channel steel is fixed on the ground.
Preferably, the shock absorption cross beam is a square tube, the tertiary shock absorber is arranged on the upper end face of the inner bottom wall of the shock absorption cross beam tube, a strip-shaped hole is formed in the upper side wall of the shock absorption cross beam tube opposite to the tertiary shock absorber, and the secondary shock absorber passes through the strip-shaped hole and abuts against the upper end face of the tertiary shock absorber.
Preferably, the first-stage damper comprises a first rubber spring and a damping bottom plate, wherein the first rubber spring is of a cylindrical structure, a through hole is formed in the middle of the first rubber spring, a first connecting pipe is arranged in the middle of the upper surface of the damping bottom plate, the first rubber spring is sleeved on the first connecting pipe, and a screw rod is connected to the upper end of the first connecting pipe.
Preferably, the secondary shock absorber comprises a hard compression spring and a flexible compression spring, wherein the hard compression spring is sleeved outside the flexible compression spring and keeps a gap, the upper ends of the hard compression spring and the flexible compression spring are abutted against a baffle plate, and the baffle plate is arranged at the bottom of the strip nut.
Preferably, the baffle lower surface is provided with a limiting ring, and the hard compression spring and the flexible compression spring are respectively arranged outside and inside the limiting ring.
Preferably, the third-stage shock absorber comprises a second rubber spring and a pressing plate, wherein the second rubber spring is of a cylindrical structure, a through hole is formed in the middle of the second rubber spring, a connecting pipe II is arranged in the middle of the lower surface of the pressing plate, the second rubber spring is sleeved on the connecting pipe II, a screw rod penetrates through the connecting pipe II and the pressing plate, and a limiting ring II used for limiting the hard compression spring and the flexible compression spring is arranged on the upper end face of the pressing plate.
Preferably, the fourth-order damper is a damping sound-insulating damper.
Preferably, four ends of the two shock absorbing cross beams are symmetrically connected with four L-shaped supporting frames, and a reinforcing beam is fixedly connected between the left L-shaped supporting frame and the right L-shaped supporting frame which are opposite.
The invention has the beneficial effects that: compared with the prior art, the noise reduction device has the advantages that the noise of the transformer can be greatly reduced after multistage shock absorption, the shock absorption and noise reduction effects are better, the noise generated by the vibration of the transformer can be eliminated by more than 98%, the noise pollution is reduced, the normal life state of people is not affected, the noise reduction device is low in cost, easy to assemble and disassemble, simple in installation, in a modularized structure and convenient to carry, the installation cost is greatly saved, and the noise reduction effect on a frequency spectrum region with the frequency multiplication of 50Hz of the noise frequency of the 10kV transformer is obvious.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a schematic diagram of the front view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure of A-A in FIG. 3;
FIG. 6 is an enlarged cross-sectional schematic view of the junction of the primary, secondary and tertiary shock absorbers.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in fig. 1-6, a high-isolation-rate power distribution transformer noise reduction device comprises a damping beam 1, a primary damper 2, a secondary damper 3, a tertiary damper 4 and a quaternary damper 5, wherein the damping beam 1 is two and symmetrically arranged left and right, the bottom of each damping beam 1 is supported by a plurality of quaternary dampers 5, the bottoms of the quaternary dampers 5 are placed in grooves of a damper base channel 8, the damper base channel 8 is fixed on the ground 9, the damper base channel 8 can play a limiting role, two secondary dampers 3 are symmetrically arranged on each damping beam 1 front and back, the primary damper 2 adopts four primary dampers, and is respectively arranged on two transformer channel 7 (if the existing transformer is modified, the length of the transformer channel 7 is short, the noise reduction device cannot be arranged, and needs to be lengthened, the bottom of each damping beam 1 is fixedly connected with the bottom groove of a longer channel steel, the transformer channel 7 is fixedly connected with the front and back bottoms of the transformer 12, each secondary damper 3 passes through the screw rod 6 and the transformer channel 7 to be connected with the transformer channel 7 through the transformer channel 7 in a suspending mode, and the transformer channel 7 is connected with the transformer channel 5 through the vibration damper 10; the tertiary damper 4 is installed between the damper cross member 1 and the secondary damper 3.
Preferably, the shock attenuation crossbeam 1 is square pipe, and the shock attenuation crossbeam 1 intraductal diapire up end is arranged in to tertiary bumper shock absorber 4, and the shock attenuation crossbeam 1 intraductal lateral wall that tertiary bumper shock absorber 4 just is just right sets up bar hole 11, and the secondary bumper shock absorber 3 passes bar hole 11 and supports and lean on tertiary bumper shock absorber 4 up end, can let the structure compacter, avoids because of the operation such as the too high interference transformer overhauls of secondary bumper shock absorber installation, installs in addition inside, and whole noise reduction device's stability is better.
Preferably, the first-stage damper 2 includes a first rubber spring 201 and a damping bottom plate 202 made of metal, the first rubber spring 201 is in a cylindrical structure, a through hole is formed in the middle of the first rubber spring, a first connecting pipe 203 is arranged in the middle of the upper surface of the damping bottom plate 202, the first rubber spring 201 is sleeved on the first connecting pipe 203, the upper end of the first connecting pipe 203 is in spiral connection or is welded with a screw 6, vibration noise can be stably transmitted through the bottom plate made of metal, and the first connecting pipe is matched with the first connecting pipe to be convenient to connect.
Preferably, the secondary damper 3 includes a rigid compression spring 301 and a flexible compression spring 302, the rigid compression spring 301 is sleeved outside the flexible compression spring 302 and keeps a gap, the upper ends of the rigid compression spring 301 and the flexible compression spring 302 are abutted against a baffle 303, the baffle 303 is arranged at the bottom of the strip nut 304, the two compression springs are telescopically mounted together, and the two compression springs are hard outside and soft inside, so that the damping and noise reduction effects are better.
Preferably, the lower surface of the baffle 303 is provided with a limiting ring 305, the hard compression spring 301 and the flexible compression spring 302 are respectively arranged outside and inside the limiting ring 305, and the two springs can be separated through the limiting ring, so that the noise reduction effect is prevented from being deteriorated after the two springs are contacted with each other.
Preferably, the above-mentioned tertiary bumper shock absorber 4 includes rubber spring two 401 and clamp plate 402, rubber spring two 401 is cylindrical structure, the middle part is provided with the through-hole, clamp plate 402 lower surface middle part is provided with connecting pipe two 403, rubber spring two 401 cup joints on connecting pipe two 403, screw rod 6 passes connecting pipe two 403 and clamp plate 402, the clamp plate through the metal preparation, can be steadily transmitted vibration noise, it is spacing also to be convenient for to cooperate with connecting pipe two, clamp plate 402 up end is provided with spacing ring two 404 that are used for spacing rigid compression spring 301 and flexible compression spring 302, can cooperate spacing ring one, play better spacing rigid compression spring 301 and flexible compression spring 302 of keeping apart.
Preferably, the fourth-level damper 5 is a damping sound-insulating damper, and has good damping sound-insulating effect.
Preferably, four ends of the two shock absorbing cross beams 1 are symmetrically connected with four L-shaped supporting frames 13, and a reinforcing beam 14 is fixedly connected between the two L-shaped supporting frames 13 opposite to each other in the left-right direction, so that the shock absorbing cross beams can be reinforced, and the transformer shock absorbing base is convenient to hoist.
Damping principle: after the transformer operation produces vibration, vibration transmission to transformer channel-section steel, the one-level shock absorber buffering a part of vibration through transformer channel-section steel below, then continue to transmit to tertiary shock absorber after buffering a part of vibration again through the second grade shock absorber of screw rod connection, tertiary shock absorber transmits vibration after buffering for the damping cross arm, the damping cross arm passes the vibration after dispersing in whole cross arm and transmits to the four-level shock absorber of a plurality of supports, the four-level shock absorber transmits vibration after the damping buffering to shock absorber base channel-section steel, finally vibration passes to ground, after multiple damping, can dispel more than 98% with the noise that transformer vibration produced, alleviate noise pollution, reach and do not influence crowd normal life state.
The transformer is internally filled with special vibration damping materials, the outgoing lines of the transformer are hard-row connection modes in the past, and the transformer is another main way of noise transmission, and the soft connection made of the copper braid belts can effectively isolate the noise transmission way.
The foregoing is merely illustrative of the present invention, and the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present invention, and therefore, the scope of the present invention shall be defined by the scope of the appended claims.
Claims (5)
1. A distribution transformer noise reduction device with high blocking rate is characterized in that: the novel shock absorber comprises two shock absorbing beams (1), one-level shock absorbers (2), two-level shock absorbers (3) and four-level shock absorbers (5), wherein the two shock absorbing beams (1) are symmetrically arranged left and right, the bottom of each shock absorbing beam (1) is supported by a plurality of four-level shock absorbers (5), two-level shock absorbers (3) are symmetrically arranged on each shock absorbing beam (1) front and back, four first-level shock absorbers (2) are respectively arranged in four bottom grooves of two transformer channel steels (7), each second-level shock absorber (3) penetrates through the shock absorbing beam (1) and the transformer channel steel (7) to be connected to the first-level shock absorber (2) through a screw rod (6) and hangs the transformer channel steel (7), and the four-level shock absorbers (5) are connected to the shock absorbing beam (1) through screws (10);
the shock absorber further comprises a third-stage shock absorber (4), and the third-stage shock absorber (4) is arranged between the shock absorbing cross beam (1) and the second-stage shock absorber (3); the primary shock absorber (2) comprises a first rubber spring (201) and a shock absorption bottom plate (202), wherein the first rubber spring (201) is of a cylindrical structure, a through hole is formed in the middle of the first rubber spring, a first connecting pipe (203) is arranged in the middle of the upper surface of the shock absorption bottom plate (202), the first rubber spring (201) is sleeved on the first connecting pipe (203), and the upper end of the first connecting pipe (203) is connected with a screw rod (6); the secondary shock absorber (3) comprises a hard compression spring (301) and a flexible compression spring (302), wherein the hard compression spring (301) is sleeved outside the flexible compression spring (302) and keeps a gap, the upper ends of the hard compression spring (301) and the flexible compression spring (302) are abutted against a baffle plate (303), and the baffle plate (303) is arranged at the bottom of the strip nut (304); the three-stage shock absorber (4) comprises a rubber spring II (401) and a pressing plate (402), wherein the rubber spring II (401) is of a cylindrical structure, a through hole is formed in the middle of the rubber spring II, a connecting pipe II (403) is arranged in the middle of the lower surface of the pressing plate (402), the rubber spring II (401) is sleeved on the connecting pipe II (403), a screw rod (6) penetrates through the connecting pipe II (403) and the pressing plate (402), and a limiting ring II (404) for limiting the hard compression spring (301) and the flexible compression spring (302) is arranged on the upper end face of the pressing plate (402); the fourth-level shock absorber (5) adopts a damping and sound-insulating shock absorber.
2. The high barrier ratio distribution transformer noise reducer of claim 1, wherein: the bottom of the four-stage shock absorber (5) is placed in a groove of a shock absorber base channel steel (8), and the shock absorber base channel steel (8) is fixed on the ground (9).
3. The high barrier ratio distribution transformer noise reducer of claim 1, wherein: the shock attenuation crossbeam (1) is square pipe, and shock attenuation crossbeam (1) intraductal diapire up end is arranged in tertiary bumper shock absorber (4), and shock attenuation crossbeam (1) intraductal lateral wall that tertiary bumper shock absorber (4) are just right sets up bar hole (11), and secondary bumper shock absorber (3) pass bar hole (11) and support and lean on tertiary bumper shock absorber (4) up end.
4. The high barrier ratio distribution transformer noise reducer of claim 1, wherein: the lower surface of the baffle plate (303) is provided with a limiting ring (305), and the hard compression spring (301) and the flexible compression spring (302) are respectively arranged outside and inside the limiting ring (305).
5. The high barrier ratio distribution transformer noise reducer of claim 1, wherein: four ends of the two damping cross beams (1) are symmetrically connected with four L-shaped supporting frames (13), and a reinforcing beam (14) is fixedly connected between the two L-shaped supporting frames (13) which are opposite left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997631.5A CN113707417B (en) | 2021-08-27 | 2021-08-27 | High-barrier-rate noise reduction device for distribution transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997631.5A CN113707417B (en) | 2021-08-27 | 2021-08-27 | High-barrier-rate noise reduction device for distribution transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113707417A CN113707417A (en) | 2021-11-26 |
| CN113707417B true CN113707417B (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110997631.5A Active CN113707417B (en) | 2021-08-27 | 2021-08-27 | High-barrier-rate noise reduction device for distribution transformer |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150102A (en) * | 2014-08-15 | 2014-11-19 | 西安聚能超导磁体科技有限公司 | Vibration damper for long-distance transport of superconducting magnets |
| CN105605148A (en) * | 2016-03-25 | 2016-05-25 | 东北大学 | Damping system for vehicle-mounted CT (computerized tomography) equipment |
| KR101659278B1 (en) * | 2016-07-21 | 2016-09-23 | 제룡전기 주식회사 | Aseismatic molded transfomer |
| CN205881626U (en) * | 2016-07-28 | 2017-01-11 | 国网甘肃省电力公司电力科学研究院 | A vibration/noise reduction platform for station service transformer is joined in marriage in urban area |
| CN205959750U (en) * | 2016-05-09 | 2017-02-15 | 浙江恒朗电气有限公司 | Dry type distribution transformer |
| CN206098085U (en) * | 2017-01-03 | 2017-04-12 | 深圳市港特科技有限公司 | Transformer with structure of making an uproar falls in damping |
| JP6613443B1 (en) * | 2019-03-19 | 2019-12-04 | 黒沢建設株式会社 | Spring-type damping damper |
| CN211145221U (en) * | 2019-11-18 | 2020-07-31 | 长城电器集团上海有限公司 | Shock absorber and dry-type transformer provided with same |
| CN111486133A (en) * | 2020-05-13 | 2020-08-04 | 贾猛虎 | Damping device and low-noise fan |
-
2021
- 2021-08-27 CN CN202110997631.5A patent/CN113707417B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150102A (en) * | 2014-08-15 | 2014-11-19 | 西安聚能超导磁体科技有限公司 | Vibration damper for long-distance transport of superconducting magnets |
| CN105605148A (en) * | 2016-03-25 | 2016-05-25 | 东北大学 | Damping system for vehicle-mounted CT (computerized tomography) equipment |
| CN205959750U (en) * | 2016-05-09 | 2017-02-15 | 浙江恒朗电气有限公司 | Dry type distribution transformer |
| KR101659278B1 (en) * | 2016-07-21 | 2016-09-23 | 제룡전기 주식회사 | Aseismatic molded transfomer |
| CN205881626U (en) * | 2016-07-28 | 2017-01-11 | 国网甘肃省电力公司电力科学研究院 | A vibration/noise reduction platform for station service transformer is joined in marriage in urban area |
| CN206098085U (en) * | 2017-01-03 | 2017-04-12 | 深圳市港特科技有限公司 | Transformer with structure of making an uproar falls in damping |
| JP6613443B1 (en) * | 2019-03-19 | 2019-12-04 | 黒沢建設株式会社 | Spring-type damping damper |
| CN211145221U (en) * | 2019-11-18 | 2020-07-31 | 长城电器集团上海有限公司 | Shock absorber and dry-type transformer provided with same |
| CN111486133A (en) * | 2020-05-13 | 2020-08-04 | 贾猛虎 | Damping device and low-noise fan |
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| CN113707417A (en) | 2021-11-26 |
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