CN104496518A - Sandstone acoustic board for firewall of ultra-high-voltage substation and manufacturing method thereof - Google Patents
Sandstone acoustic board for firewall of ultra-high-voltage substation and manufacturing method thereof Download PDFInfo
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- CN104496518A CN104496518A CN201410676598.6A CN201410676598A CN104496518A CN 104496518 A CN104496518 A CN 104496518A CN 201410676598 A CN201410676598 A CN 201410676598A CN 104496518 A CN104496518 A CN 104496518A
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Abstract
The invention discloses a sandstone acoustic board for firewalls of an ultra-high-voltage substation and a manufacturing method thereof. The sandstone acoustic board is composed of natural sand. Natural sand is combined through a binder to form a whole body, and there are irregular mutually-connected pores among the natural sand. The manufacturing method of the sandstone acoustic board comprises the following steps: 1) the natural sand, the binder and a foaming agent are stirred and mixed uniformly; 2) the stirred mixture is poured into a mould, and the mixture tiled in the mould by vibration to form a board; 3) the board in the mould is maintained and the board is dried and hardened, and the foaming agent foams fully among natural sand to generate pores; and 4) mould stripping is carried out after the maintenance so as to obtain a finished product the sandstone acoustic board. The sandstone acoustic board has high low-frequency acoustical absorption coefficient, has no fibrous dust pollution problem and is applicable to a substation.
Description
Technical field
The present invention relates to for noise control acoustic board technical field, be specifically related to a kind of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board and preparation method thereof.
Background technology
Along with the raising of people's living standard, people get more and more to the demand of electric power, and extra-high voltage power transformation technology is fast-developing, and substation's noise inevitably affects the live and work of people.In order to reduce the pollution of Noise upon Environment, on fireproof brickwork, general installation acoustic board reduces the reverberant sound of transformer, to reduce the impact of noise on factory circle.But traditional acoustic board is the inorganic fibre class materials such as glass wool, and sound-absorbing material easily overflows, likely point discharge produces " corona " phenomenon.Tradition sound-absorbing material can not meet the noise reduction requirement in ultra-high voltage transformer station place.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board and preparation method thereof, this sandstone acoustic board low frequency absorption coefficient is higher, and does not have fibrous dust pollution question, is adapted at substation place and uses.
For achieving the above object, the invention provides following technical scheme:
The invention discloses a kind of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board, described sandstone acoustic board main body is made up of natural sand, is bonded to an entirety and makes hole that is irregular, that be interconnected by whipping agent between natural sand between natural sand by binding agent.
Further, described binding agent is inorganic silicon-based solvent.
Further, furane resin are added with in described inorganic silicon-based solvent.
Further, the fineness modulus of described natural sand is 1.5 ~ 2.
The invention also discloses the making method of described ultra-high voltage transformer station fireproof brickwork sandstone acoustic board, comprise the following steps:
1) natural sand and binding agent and whipping agent are uniformly mixed;
2) by step 1) mixture that mixes is poured in mould, and vibration makes mixture be laid in mould and forms sheet material;
3) curing step 2) sheet material in the mould that obtains, make sheet material drying sclerosis and whipping agent fully foams produce hole between natural sand;
4) maintenance complete after depanning, obtain sandstone acoustic board finished product.
Further, described whipping agent is azoformamide whipping agent.
Further, described step 1) in, the consumption of binding agent is 10% ~ 15% of natural sand quality, and the consumption of whipping agent is 5% ~ 10% of natural sand quality.
Further, described step 1) in, natural sand first sieves the impurity in natural sand before using.
Further, described step 3) in, the method for maintenance is that at 15 ~ 35 DEG C, spray form water curing is no less than 7 days.
Owing to have employed technique scheme, beneficial effect of the present invention is:
Natural sand is bonded to sheet material by binding agent by the present invention, and irregular, the hole that is interconnected that are produced by foaming agent foam between natural sand, because the existence of these holes, when noise by time noise enerty be converted into heat energy, thus to the noise of low frequency (substation's noise is based on below 500Hz noise), there is good noise reduction, the environmental protection more of sandstone acoustic board, does not have fibrous dust pollution question simultaneously.Therefore, compared with extruding with traditional fibre the acoustic board that solidify to form, sandstone acoustic board of the present invention is more adapted at substation place and uses.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearly, the invention provides following accompanying drawing and being described:
Fig. 1 is the cross-sectional view of sandstone acoustic board of the present invention.
In figure, 1, natural sand, 2, binding agent, 3, space.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is the cross-sectional view of sandstone acoustic board of the present invention, as shown in the figure, sandstone acoustic board main raw of the present invention is made up of natural sand 1, be bonded to an entirety by binding agent 2 between natural sand 1, and become between natural sand 1 to have hole 3 that is irregular, that be interconnected by foaming agent foam.By an embodiment, acoustic board of the present invention and preparation method thereof is further described below, on the basis of the present embodiment, those of ordinary skill in the art can by expanding design parameter in the present embodiment, and the claims in the present invention obtained beyond this embodiment limit other parameter, effect of the present invention can be reached equally.
Embodiment
The concrete making method of one of sandstone acoustic board of the present invention comprises the following steps:
1) choose the natural sand that fineness modulus is 1.5 ~ 2, the impurity (earth, waste residue etc.) in screening natural sand, then natural sand and binding agent and whipping agent are uniformly mixed in compulsory mixer; The binding agent that the present embodiment adopts is inorganic silicon-based solvent, and in inorganic silicon-based solvent, add furane resin (mixture is hardened at normal temperatures gradually voluntarily), and the consumption of binding agent is 12% of natural sand quality; The whipping agent that the present embodiment adopts is azoformamide whipping agent, and the consumption of whipping agent is 8% of natural sand quality.Here binding agent and the consumption of whipping agent are best enforcement consumptions, the consumption of binding agent can also be natural sand quality 10% ~ 15% any consumption, the consumption of whipping agent also can be natural sand quality 5% ~ 10% any consumption, these can realize object of the present invention.
2) by step 1) mixture that mixes is poured in the mould of 1000mm × 1000mm × 10mm, and vibration makes mixture be laid in mould and forms sheet material;
3) step 2) the spray form water curing 10 days at 30 DEG C of sheet material in the mould that obtains, make sheet material drying sclerosis and whipping agent fully foams produce hole between natural sand;
4) maintenance complete after depanning, obtain sandstone acoustic board finished product.
Room is detected by experiment, and the sound absorption coefficient of sandstone acoustic board embodiment 1 made and traditional centrifugally glass-wool acoustic board is compared as follows:
Sound absorption coefficient contrast table
As seen from the table, the sandstone acoustic board that embodiment 1 makes is at the frequency band of below 500Hz, better than the acoustically effective of conventional centrifugal glass wool acoustic board.
Sandstone acoustic board of the present invention, can according to the test result in actual apertures lyriform pore footpath after extemporaneous preparation when making, and the consumption of adjustment whipping agent, to ensure that pore size and hole are interconnected; And not losing fangle when should ensure that depanning is moved after the maintenance of sandstone acoustic board.
What finally illustrate is, above preferred embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (9)
1. a ultra-high voltage transformer station fireproof brickwork sandstone acoustic board, it is characterized in that: described sandstone acoustic board main body is made up of natural sand, be bonded to an entirety by binding agent between natural sand and make hole that is irregular, that be interconnected by whipping agent between natural sand.
2. ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 1, is characterized in that: described binding agent is inorganic silicon-based solvent.
3. ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 2, is characterized in that: be added with furane resin in described inorganic silicon-based solvent.
4. ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 1, is characterized in that: described whipping agent is azoformamide whipping agent.
5. ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 1, is characterized in that: the fineness modulus of described natural sand is 1.5 ~ 2.
6. the ultra-high voltage transformer station fireproof brickwork making method of sandstone acoustic board described in claim 1 to 5 any one, is characterized in that: comprise the following steps:
1) natural sand and binding agent and whipping agent are uniformly mixed;
2) by step 1) mixture that mixes is poured in mould, and vibration makes mixture be laid in mould and forms sheet material;
3) curing step 2) sheet material in the mould that obtains, make sheet material drying sclerosis and whipping agent fully foams produce hole between natural sand;
4) maintenance complete after depanning, obtain sandstone acoustic board finished product.
7. the making method of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 6, it is characterized in that: described step 1) in, the consumption of binding agent is 10% ~ 15% of natural sand quality, and the consumption of whipping agent is 5% ~ 10% of natural sand quality.
8. the making method of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 6, is characterized in that: described step 1) in, natural sand first sieves the impurity in natural sand before using.
9. the making method of ultra-high voltage transformer station fireproof brickwork sandstone acoustic board according to claim 5, is characterized in that: step 3) in, the method for maintenance is that at 15 ~ 35 DEG C, spray form water curing is no less than 7 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410676598.6A CN104496518B (en) | 2014-11-21 | 2014-11-21 | Ultra-high voltage transformer station fire wall sandstone acoustic board and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410676598.6A CN104496518B (en) | 2014-11-21 | 2014-11-21 | Ultra-high voltage transformer station fire wall sandstone acoustic board and preparation method thereof |
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| CN104496518A true CN104496518A (en) | 2015-04-08 |
| CN104496518B CN104496518B (en) | 2017-09-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692824A (en) * | 2014-12-17 | 2015-06-10 | 国家电网公司 | Sandstone acoustic board used in transformer substation |
| CN105272124A (en) * | 2015-09-18 | 2016-01-27 | 湖北省磊源石业有限公司 | Sandstone wall decorative material and production method thereof |
| CN106517910A (en) * | 2016-11-10 | 2017-03-22 | 广东电网有限责任公司电力科学研究院 | Sound absorbing material and preparation method thereof |
| CN109208840A (en) * | 2017-06-30 | 2019-01-15 | 正升环境科技股份有限公司 | With decorative polymer particle sound-absorbing material and preparation method thereof |
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| CN102603247A (en) * | 2012-03-18 | 2012-07-25 | 柳州汉西鸣建材发展有限公司 | Concrete acoustic material and manufacturing method thereof |
| CN202509419U (en) * | 2011-12-21 | 2012-10-31 | 中铁第四勘察设计院集团有限公司 | High-strength pearl stone sharp-split acoustical tile |
| CN103903608A (en) * | 2012-12-27 | 2014-07-02 | 浙江艾迪雅科技股份有限公司 | Efficient sound insulation material and manufacturing method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202509419U (en) * | 2011-12-21 | 2012-10-31 | 中铁第四勘察设计院集团有限公司 | High-strength pearl stone sharp-split acoustical tile |
| CN102603247A (en) * | 2012-03-18 | 2012-07-25 | 柳州汉西鸣建材发展有限公司 | Concrete acoustic material and manufacturing method thereof |
| CN103903608A (en) * | 2012-12-27 | 2014-07-02 | 浙江艾迪雅科技股份有限公司 | Efficient sound insulation material and manufacturing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104692824A (en) * | 2014-12-17 | 2015-06-10 | 国家电网公司 | Sandstone acoustic board used in transformer substation |
| CN105272124A (en) * | 2015-09-18 | 2016-01-27 | 湖北省磊源石业有限公司 | Sandstone wall decorative material and production method thereof |
| CN106517910A (en) * | 2016-11-10 | 2017-03-22 | 广东电网有限责任公司电力科学研究院 | Sound absorbing material and preparation method thereof |
| CN109208840A (en) * | 2017-06-30 | 2019-01-15 | 正升环境科技股份有限公司 | With decorative polymer particle sound-absorbing material and preparation method thereof |
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| CN104496518B (en) | 2017-09-12 |
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Inventor after: Sun Dieliang Inventor after: Zhang Shanghua Inventor after: Wang Tao Inventor after: Shao Hua Inventor after: Shen Yongpeng Inventor after: Kang Wei Inventor after: Zhao Bingjun Inventor after: Li Yonggui Inventor after: Qi Jianzhao Inventor after: Zhang Guohua Inventor before: Li Yonggui Inventor before: Qi Jianzhao Inventor before: Zhang Guohua |
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Effective date of registration: 20171114 Address after: 050030 No. 107 Tower North Road, Yuhua District, Hebei, Shijiazhuang Co-patentee after: State Grid Corporation of China Patentee after: ECONOMIC AND TECHNOLOGY RESEARCH INSTITUTE OF STATE GRID HEBEI ELECTRIC POWER COMPANY Co-patentee after: Hebei Province Power Surveying Design & Research Institute Address before: 050031 Changan District, Hebei, China, North Street, building No. 6, No. Patentee before: Hebei Province Power Surveying Design & Research Institute |