CN106298201B - A kind of amorphous alloy transformer core coil with soundproof plate - Google Patents
A kind of amorphous alloy transformer core coil with soundproof plate Download PDFInfo
- Publication number
- CN106298201B CN106298201B CN201610981193.2A CN201610981193A CN106298201B CN 106298201 B CN106298201 B CN 106298201B CN 201610981193 A CN201610981193 A CN 201610981193A CN 106298201 B CN106298201 B CN 106298201B
- Authority
- CN
- China
- Prior art keywords
- sound
- glass mat
- parts
- soundproof plate
- bottom plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
-
- 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
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The present invention relates to a kind of amorphous alloy transformer core coil with soundproof plate, including core limb, soundproof plate and low-voltage coil, the quantity of soundproof plate is four pieces, four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, soundproof plate outer wall coats one layer of insulating tape and is fixed, and low-voltage coil is coated on outside soundproof plate;The soundproof plate includes silencing bottom plate and sound-absorbing block, silencing bottom plate is glass mat, several sound-absorbing blocks are uniformly fixed on silencing bottom plate, the sound-absorbing block is regular hexagonal prism structure, sound-absorbing block upper surface is recessed inwardly to form the sound-absorbing slot of positive six terrace with edges structure, and the sound-absorbing block of the soundproof plate is in contact with core limb, and silencing bottom plate is in contact with low-voltage coil, the effect for playing sound insulation and sound-absorbing reaches the noise control purpose in transformer core post part.
Description
Technical field
The present invention relates to a kind of transformers, and in particular to a kind of amorphous alloy transformer core coil with soundproof plate.
Background technique
In dry-type amorphous alloy transformer, due to structure and material of transformer itself itself, process
The reason of and transformer structure design and the reason of electromagnetic design, the noise of transformer comparatively protrudes, and needs tying
Structure carries out that certain measure is taken to be handled, and reduces the diffusion of noise in sound source;In the noise of dry-type amorphous alloy transformer
In control, current processing all concentrates on the noise reduction process of transformer core surrounding and upper yoke and clamp structure, prevents transformation
Propagation of the device noise between air and the solid of contact.At present in transformer industry there is no between coil and core limb
Treatment measures product.
Summary of the invention
The present invention proposes a kind of amorphous alloy transformer core coil with soundproof plate regarding to the issue above, play every
The effect of sound and sound-absorbing reaches the noise control purpose in transformer core post part.
Specific technical solution is as follows:
A kind of amorphous alloy transformer core coil with soundproof plate, including core limb, soundproof plate and low-voltage coil, every
The quantity of soundboard is four pieces, and four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, and soundproof plate outer wall coats one layer absolutely
Edge adhesive tape is fixed, and low-voltage coil is coated on outside soundproof plate;
The soundproof plate includes silencing bottom plate and sound-absorbing block, and several sound-absorbing blocks are uniformly fixed on silencing bottom plate, the suction
Sound block is regular hexagonal prism structure, and sound-absorbing block upper surface is recessed inwardly to form the sound-absorbing slot of positive six terrace with edges structure, the soundproof plate
Sound-absorbing block is in contact with core limb, and silencing bottom plate is in contact with low-voltage coil.
A kind of above-mentioned amorphous alloy transformer core coil with soundproof plate, wherein the thickness h 1 of the silencing bottom plate
For 2mm.
Above-mentioned a kind of amorphous alloy transformer core coil with soundproof plate, wherein the height h2 of the sound-absorbing block is
10mm。
Above-mentioned a kind of amorphous alloy transformer core coil with soundproof plate, wherein the depth h3 of the sound-absorbing slot is
2-3mm。
Above-mentioned a kind of amorphous alloy transformer core coil with soundproof plate, wherein the silencing bottom plate is by several layers
Glass mat superposition composition.
The invention has the benefit that
The present invention has soundproof plate made of flexible glass fibre in the core limb surrounding package of transformer;Soundproof plate is glass
The density board that glass fiber is molded into because having porosity, thus has good sound insulation and sound absorption qualities;Sound-absorbing block structure shape
Such as honeycomb, sound wave is good in its surface reflection attenuating.Using above-mentioned sound-absorbing, sound-insulating structure, sound is effectively blocked
Soundproof plate fitting is fixed on around rectangular iron stem, the temperature classification that there is H class B insulation to have by transmitting with H Insulating Binders of Class band,
Meet requirement of the transformer to insulating part and structure, while soundproof plate is placed between core limb and low-voltage coil, greatly enhances
The resistance to voltage levels of transformer.
The present invention can reduce 4~5dB noise, and economic benefit is obvious, and structure is simple, easy to assembly, sound-absorbing sound insulation and absolutely
Edge ability is strengthened.
Detailed description of the invention
Fig. 1 is cross-sectional view of the present invention.
Fig. 2 is septum arrangements figure of the present invention.
Fig. 3 is soundproof plate side view of the present invention.
Fig. 4 is A-A sectional view of the present invention.
Specific embodiment
Clear to be more clear technical solution of the present invention, the present invention is described further with reference to the accompanying drawing,
The technical characteristic of any pair of technical solution of the present invention carries out the scheme that equivalencing is obtained with conventional reasoning and each falls within guarantor of the present invention
Protect range.
Appended drawing reference
Core limb 1, soundproof plate 2, low-voltage coil 3, insulating tape 4, silencing bottom plate 5, sound-absorbing block 6, sound-absorbing slot 7.
Embodiment one
A kind of amorphous alloy transformer core coil with soundproof plate as shown in the figure, including core limb 1,2 and of soundproof plate
Low-voltage coil 3, the quantity of soundproof plate are four pieces, and four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, outside soundproof plate
Wall coats one layer of insulating tape 4 and is fixed, and low-voltage coil is coated on outside soundproof plate;
The soundproof plate includes silencing bottom plate 5 and sound-absorbing block 6, and the silencing bottom plate is by several layers glass mat superposition group
At several sound-absorbing blocks are uniformly fixed on silencing bottom plate, and the sound-absorbing block is regular hexagonal prism structure, and sound-absorbing block upper surface concaves
The sound-absorbing slot 7 for forming positive six terrace with edges structure is fallen into, the sound-absorbing block of the soundproof plate is in contact with core limb, silencing bottom plate and low-voltage line
Circle is in contact, and the thickness h 1 of the silencing bottom plate is 2mm, and the height h2 of the sound-absorbing block is 10mm, the depth of the sound-absorbing slot
H3 is 2mm.
The silencing bottom plate is arranged alternately by four layer of first glass mat and three layer of second glass mat, is molded into
The composition of type, first glass mat is calculated by weight as:
85 parts of glass fibre, 10 parts of epoxy resin, 1.5 parts of thickener, 1.8 parts of promotor, 1.8 parts of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
140 parts of glass fibre, 15 parts of epoxy resin, 2.2 parts of thickener, 0.8 part of promotor, 2.5 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
The density of first glass mat greatly improves sound insulation and sound-absorbing effect less than the density of the second glass mat
Fruit.
The thickener is pressed the weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Amount portion rate mixes.
The promotor is pressed by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide
5.5:0.8:2:3:1 weight fraction ratio mix.
The toughener presses 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Weight fraction ratio mix.
First glass mat is identical as the thickness of the second glass mat.
Embodiment two
A kind of amorphous alloy transformer core coil with soundproof plate as described in embodiment one, difference
It is that the silencing bottom plate is arranged alternately by three layer of first glass mat and four layer of second glass mat, is pressed and molded, institute
The composition for stating the first glass mat is calculated by weight as:
80 parts of glass fibre, 5 parts of epoxy resin, 0.6 part of thickener, 0.8 part of promotor, 0.5 part of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
120 parts of glass fibre, 7 parts of epoxy resin, 0.5 part of thickener, 0.4 part of promotor, 1.2 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
The density of first glass mat greatly improves sound insulation and sound-absorbing effect less than the density of the second glass mat
Fruit.
The thickener is pressed the weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Amount portion rate mixes.
The promotor is pressed by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide
5.5:0.8:2:3:1 weight fraction ratio mix.
The toughener presses 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Weight fraction ratio mix.
The thickness of first glass mat is 0.7 times of the thickness of the second glass mat.
Embodiment three
A kind of amorphous alloy transformer core coil with soundproof plate as described in embodiment one, difference
It is that the silencing bottom plate is arranged alternately by three layer of first glass mat and three layer of second glass mat, is pressed and molded, institute
The composition for stating the first glass mat is calculated by weight as:
90 parts of glass fibre, 16 parts of epoxy resin, 2.5 parts of thickener, 2.6 parts of promotor, 3.5 parts of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
150 parts of glass fibre, 19 parts of epoxy resin, 3.3 parts of thickener, 2.2 parts of promotor, 3.8 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
The density of first glass mat greatly improves sound insulation and sound-absorbing effect less than the density of the second glass mat
Fruit.
The thickener is pressed the weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Amount portion rate mixes.
The promotor is pressed by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide
5.5:0.8:2:3:1 weight fraction ratio mix.
The toughener presses 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Weight fraction ratio mix.
The thickness of first glass mat is 1.2 times of the thickness of the second glass mat.
The present invention has soundproof plate made of flexible glass fibre in the core limb surrounding package of transformer;Soundproof plate is glass
The density board that glass fiber is molded into because having porosity, thus has good sound insulation and sound absorption qualities;Sound-absorbing block structure shape
Such as honeycomb, sound wave is good in its surface reflection attenuating.Using above-mentioned sound-absorbing, sound-insulating structure, sound is effectively blocked
Soundproof plate fitting is fixed on around rectangular iron stem, the temperature classification that there is H class B insulation to have by transmitting with H Insulating Binders of Class band,
Meet requirement of the transformer to insulating part and structure, while soundproof plate is placed between core limb and low-voltage coil, greatly enhances
The resistance to voltage levels of transformer.The present invention can reduce 4~5dB noise, and economic benefit is obvious, and structure is simple, easy to assembly, inhale
Sound sound insulation and insulating capacity are strengthened.
Claims (3)
1. a kind of amorphous alloy transformer core coil with soundproof plate, it is characterized in that, including core limb, soundproof plate and low pressure
Coil, the quantity of soundproof plate are four pieces, and four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, soundproof plate outer wall cladding
One layer of insulating tape is fixed, and low-voltage coil is coated on outside soundproof plate;
The soundproof plate includes silencing bottom plate and sound-absorbing block, and the silencing bottom plate is made of the superposition of several layers glass mat, if
Dry sound-absorbing block is uniformly fixed on silencing bottom plate, and the sound-absorbing block is regular hexagonal prism structure, and sound-absorbing block upper surface is recessed inwardly shape
The sound-absorbing block of the sound-absorbing slot of Cheng Zhengliu terrace with edge structure, the soundproof plate is in contact with core limb, silencing bottom plate and low-voltage coil phase
Contact, the thickness h 1 of the silencing bottom plate are 2mm, and the height h2 of the sound-absorbing block is 10mm, and the depth h3 of the sound-absorbing slot is
2mm;
The silencing bottom plate is arranged alternately by four layer of first glass mat and three layer of second glass mat, compression molding, institute
The composition for stating the first glass mat is calculated by weight as:
85 parts of glass fibre, 10 parts of epoxy resin, 1.5 parts of thickener, 1.8 parts of promotor, 1.8 parts of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
140 parts of glass fibre, 15 parts of epoxy resin, 2.2 parts of thickener, 0.8 part of promotor, 2.5 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
Density of the density of first glass mat less than the second glass mat;
The thickener is pressed the parts by weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Number ratio mixes;
The promotor presses 5.5 by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide:
The weight fraction ratio of 0.8:2:3:1 mixes;
The toughener is pressed the weight of 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Amount portion rate mixes;
First glass mat is identical as the thickness of the second glass mat.
2. a kind of amorphous alloy transformer core coil with soundproof plate, it is characterized in that, including core limb, soundproof plate and low pressure
Coil, the quantity of soundproof plate are four pieces, and four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, soundproof plate outer wall cladding
One layer of insulating tape is fixed, and low-voltage coil is coated on outside soundproof plate;
The soundproof plate includes silencing bottom plate and sound-absorbing block, and the silencing bottom plate is made of the superposition of several layers glass mat, if
Dry sound-absorbing block is uniformly fixed on silencing bottom plate, and the sound-absorbing block is regular hexagonal prism structure, and sound-absorbing block upper surface is recessed inwardly shape
The sound-absorbing block of the sound-absorbing slot of Cheng Zhengliu terrace with edge structure, the soundproof plate is in contact with core limb, silencing bottom plate and low-voltage coil phase
Contact, the thickness h 1 of the silencing bottom plate are 2mm, and the height h2 of the sound-absorbing block is 10mm, and the depth h3 of the sound-absorbing slot is
2mm;
The silencing bottom plate is arranged alternately by three layer of first glass mat and four layer of second glass mat, compression molding, institute
The composition for stating the first glass mat is calculated by weight as:
80 parts of glass fibre, 5 parts of epoxy resin, 0.6 part of thickener, 0.8 part of promotor, 0.5 part of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
120 parts of glass fibre, 7 parts of epoxy resin, 0.5 part of thickener, 0.4 part of promotor, 1.2 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
Density of the density of first glass mat less than the second glass mat;
The thickener is pressed the parts by weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Number ratio mixes;
The promotor presses 5.5 by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide:
The weight fraction ratio of 0.8:2:3:1 mixes;
The toughener is pressed the weight of 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Amount portion rate mixes;
The thickness of first glass mat is 0.7 times of the thickness of the second glass mat.
3. a kind of amorphous alloy transformer core coil with soundproof plate, it is characterized in that, including core limb, soundproof plate and low pressure
Coil, the quantity of soundproof plate are four pieces, and four pieces of soundproof plates are bonded respectively to be fixed on the outer wall of core limb, soundproof plate outer wall cladding
One layer of insulating tape is fixed, and low-voltage coil is coated on outside soundproof plate;
The soundproof plate includes silencing bottom plate and sound-absorbing block, and the silencing bottom plate is made of the superposition of several layers glass mat, if
Dry sound-absorbing block is uniformly fixed on silencing bottom plate, and the sound-absorbing block is regular hexagonal prism structure, and sound-absorbing block upper surface is recessed inwardly shape
The sound-absorbing block of the sound-absorbing slot of Cheng Zhengliu terrace with edge structure, the soundproof plate is in contact with core limb, silencing bottom plate and low-voltage coil phase
Contact, the thickness h 1 of the silencing bottom plate are 2mm, and the height h2 of the sound-absorbing block is 10mm, and the depth h3 of the sound-absorbing slot is
2mm;
The silencing bottom plate is arranged alternately by three layer of first glass mat and three layer of second glass mat, compression molding, institute
The composition for stating the first glass mat is calculated by weight as:
90 parts of glass fibre, 16 parts of epoxy resin, 2.5 parts of thickener, 2.6 parts of promotor, 3.5 parts of toughener;
The first glass mat is can be obtained into after rolling is compound in above each composition;
The composition of second glass mat is calculated by weight as:
150 parts of glass fibre, 19 parts of epoxy resin, 3.3 parts of thickener, 2.2 parts of promotor, 3.8 parts of toughener;
The second glass mat is can be obtained into after rolling is compound in above each composition;
Density of the density of first glass mat less than the second glass mat;
The thickener is pressed the parts by weight of 8:3:0.5:1.2:4 by hydroxymethyl cellulose, sodium sulphate, kaolin, paraffin, n-hexane
Number ratio mixes;
The promotor presses 5.5 by zinc dibenzyl dithiocarbamate, calcium carbonate, magnesium chloride, glycerine, sodium hydroxide:
The weight fraction ratio of 0.8:2:3:1 mixes;
The toughener is pressed the weight of 2:4:3:3 by polyether ketone ketone, neopelex, dehydrated alcohol, nano-titanium dioxide
Amount portion rate mixes;
The thickness of first glass mat is 1.2 times of the thickness of the second glass mat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610981193.2A CN106298201B (en) | 2016-11-08 | 2016-11-08 | A kind of amorphous alloy transformer core coil with soundproof plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610981193.2A CN106298201B (en) | 2016-11-08 | 2016-11-08 | A kind of amorphous alloy transformer core coil with soundproof plate |
Publications (2)
Publication Number | Publication Date |
---|---|
CN106298201A CN106298201A (en) | 2017-01-04 |
CN106298201B true CN106298201B (en) | 2019-01-08 |
Family
ID=57720943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610981193.2A Active CN106298201B (en) | 2016-11-08 | 2016-11-08 | A kind of amorphous alloy transformer core coil with soundproof plate |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106298201B (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI258776B (en) * | 2004-10-29 | 2006-07-21 | Tatung Co | Adhesive coating and binding method for amorphous transformer iron core |
JP3857173B2 (en) * | 2002-04-11 | 2006-12-13 | 株式会社日立産機システム | Transformer |
CN201438407U (en) * | 2009-08-27 | 2010-04-14 | 保定天威集团有限公司 | AMDT structure for efficiently improving noise |
CN103559986A (en) * | 2013-11-22 | 2014-02-05 | 国家电网公司 | Amorphous alloy iron core with functions of noise reduction and vibration reduction |
CN205122366U (en) * | 2015-10-30 | 2016-03-30 | 重庆科新电气有限公司 | Damping cushion of making an uproar falls in metallic glass transformer |
CN205140697U (en) * | 2015-11-26 | 2016-04-06 | 上海盈先电气有限公司 | Novel three post amorphouss on " 1 " style of calligraphy arm -tie structure are unshakable in one's determination |
CN206210580U (en) * | 2016-11-08 | 2017-05-31 | 江苏宝亨新电气有限公司 | A kind of amorphous alloy transformer core coil with sound panel |
-
2016
- 2016-11-08 CN CN201610981193.2A patent/CN106298201B/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3857173B2 (en) * | 2002-04-11 | 2006-12-13 | 株式会社日立産機システム | Transformer |
TWI258776B (en) * | 2004-10-29 | 2006-07-21 | Tatung Co | Adhesive coating and binding method for amorphous transformer iron core |
CN201438407U (en) * | 2009-08-27 | 2010-04-14 | 保定天威集团有限公司 | AMDT structure for efficiently improving noise |
CN103559986A (en) * | 2013-11-22 | 2014-02-05 | 国家电网公司 | Amorphous alloy iron core with functions of noise reduction and vibration reduction |
CN205122366U (en) * | 2015-10-30 | 2016-03-30 | 重庆科新电气有限公司 | Damping cushion of making an uproar falls in metallic glass transformer |
CN205140697U (en) * | 2015-11-26 | 2016-04-06 | 上海盈先电气有限公司 | Novel three post amorphouss on " 1 " style of calligraphy arm -tie structure are unshakable in one's determination |
CN206210580U (en) * | 2016-11-08 | 2017-05-31 | 江苏宝亨新电气有限公司 | A kind of amorphous alloy transformer core coil with sound panel |
Also Published As
Publication number | Publication date |
---|---|
CN106298201A (en) | 2017-01-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN203311839U (en) | New type labyrinth cavity composite muffler | |
CN108775091A (en) | A kind of compound locally resonant metamaterial sound panel | |
CN204102561U (en) | A kind of compound sound-absorption structural | |
CN106298201B (en) | A kind of amorphous alloy transformer core coil with soundproof plate | |
CN202986208U (en) | Micro perforation plate film bonding layer composition sound absorption board | |
CN208884753U (en) | A kind of compound locally resonant metamaterial soundproof plate | |
CN206210580U (en) | A kind of amorphous alloy transformer core coil with sound panel | |
CN109610690A (en) | The multiple rows of hole concrete panel and its processing method of built-in sound insulating material | |
CN108099285A (en) | A kind of wall board material with decoration mortar layer | |
CN201406807Y (en) | Double-layer sound-absorption composite board | |
CN203592539U (en) | Container and novel container floor board having surface board and bottom board made of bamboo wood | |
CN203440934U (en) | Suspended absorber | |
JP6887661B2 (en) | Sound absorber | |
CN204326283U (en) | Double-deck baffle systems | |
CN211735883U (en) | Building sound insulation wall structure | |
CN209569289U (en) | A kind of control device inhibiting vibration | |
CN209603324U (en) | Multiple rows of hole concrete panel of built-in sound insulating material | |
CN208622423U (en) | A kind of novel substation's sound-absorption composite board | |
CN206928566U (en) | A kind of indoor flexible connects sound panel | |
CN202417878U (en) | Air conditioner and sound insulation cotton of air conditioner compressor | |
CN206385720U (en) | Construction partition board | |
CN103437441B (en) | A kind of suspended absorber | |
CN206267340U (en) | One kind building shockproof plate of sound-insulating | |
CN202252430U (en) | High-airflow sound absorption pipeline | |
CN205224326U (en) | Building sound insulation building panel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |