CN201014146Y - Cover used in gas turbine - Google Patents
Cover used in gas turbine Download PDFInfo
- Publication number
- CN201014146Y CN201014146Y CNU2007200364662U CN200720036466U CN201014146Y CN 201014146 Y CN201014146 Y CN 201014146Y CN U2007200364662 U CNU2007200364662 U CN U2007200364662U CN 200720036466 U CN200720036466 U CN 200720036466U CN 201014146 Y CN201014146 Y CN 201014146Y
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- CN
- China
- Prior art keywords
- gas turbine
- noise
- case
- cover casing
- wall
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- 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.)
- Expired - Lifetime
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model aims to provide a cover casing which is used on the gas turbine and can effectively reduce the noise of the set. The bottom of the cover casing is connected with a foundation which is independent from the chassis of the gas turbine. As the foundation connecting the cover casing is separated from the chassis of the gas turbine set, the vibration transmission from the set to the cover casing can be reduced, thereby avoiding the cover casing from making noise due to vibration. With the technic proposal of the cover casing, the noise does not exceed 65 dB when measured 120m away; the noise of the gas turbine set does not exceed 85dB when measured 1m from the set, therefore, the noise decreases by 13 dB compared with the original cover casing, and thus the noise pollution of the set is considerably reduced.
Description
Technical field
The utility model relates to the case that uses on the gas turbine, the case that uses on the especially middle low-calorific-value gas turbine, and it can effectively reduce the noise of gas turbine.
Background technique
Along with the development at full speed of China's economic, one flourishing scene has appearred in the electric utility of China, and particularly the development of gas turbine power plant is more rapid.Gas turbine is a kind of high-revolving power plant, and its friction and gas hydrodynamic noise are big.Now domestic gas turbine power plant mainly adopts be noise reach be subjected to the sound point before, reduce the noise of gas turbine unit with the case that can insulate against sound, absorb sound, its case comprises the frame structure of being made up of beam in length and breadth and is arranged on body of wall in the framework that its longeron bottom is connected on the chassis of gas turbine.After case that employing is connected with the chassis and intake and exhaust silencing apparatus reduced noise, the noise of the unit that has now moved just can satisfy Industrial-Enterprises in China noise sanitary standard.Figure 1 shows that the 6B series gas turbine that Nanjing Steam Turbine Motor (Group) Co., Ltd. produces, use the case and the intake and exhaust silencing apparatus that are connected with the chassis to carry out the noise size distribution figure that noise pollution is handled the actual measurement of back when unit normally moves, by among the figure as can be known, noise maximum at the exhaust chamber place, being 98dB, is 62dB at 120m place noise.
The fuel of conventional gas turbine is rock gas, and the fuel that middle low-calorific-value gas turbine uses mostly is the mixed gas of blast furnace gas and coke-stove gas.Blast furnace gas is the by-product of blast furnace ironmaking, and main combustible component is CO and H
2, major part is non-combustible gas and dust.The mixed gas calorific value that is formed by blast furnace gas and coke-stove gas proportioning is lower more than 6 times than common heating value of natural gas, so gas turbine mixed gas volume flowrate under equal load increases more than 6 times.Because the fuel gas flow is big, the flow velocity height, so the noise maximum value of middle low-calorific-value gas turbine generally all surpasses 100dB, noise is not less than 65dB at the 120m place.
Because China medium-scale Iron And Steel Plant considerable part blast furnace gas is that emptying slatterns; if can be as gas turbine fuel; have appreciable economic benefit; therefore can effectively protect environment, the middle low-calorific-value gas turbine of total energy approach is progressively promoted; and its noise problem also shows especially; be subjected to the attention of user and environmental administration; country clearly proposes to develop the environment protection type recycling economy in Eleventh Five-Year Plan, and this just has higher requirement on the noise processed of unit to present Gas Turbine Generating Units manufacturer.
Summary of the invention
The purpose of this utility model provides on a kind of use gas turbine, especially uses the case that can effectively reduce equipment acoustic noise on middle low-calorific-value gas turbine, to satisfy the higher noise pollution Processing capacity of environmental requirement.
The case that uses on the described gas turbine, its case bottom is connected on the ground that is independent of the gas turbine chassis.Be separated owing to connect the ground of case and the unit chassis of gas turbine, can reduce the vibration transfer of unit and give case, avoid causing case to produce noise because of vibration.
After adopting this case scheme, noise is no more than 65dB at the 120m place; Gas turbine equipment acoustic noise maximum at the group 1m place of disembarking is no more than 85dB, has reduced 13dB during than the original case of use, and the noise pollution of unit is reduced greatly.
As improvement, above-mentioned case comprises the frame structure of being made up of beam in length and breadth and is arranged on body of wall in the framework.This frame structure, body of wall belong to prior art, are not described in detail.
As further improvement, described body of wall comprises outer wall, have the inwall of through hole and be filled in slag wool between the inside and outside wall.Preferably the density of slag wool is 0.1g/cm
3The noise of unit can be absorbed by slag wool by through hole on the body of wall inwall.
For any case recited above, described ground is a reinforced concrete base.
Description of drawings
Fig. 1 is existing gas turbine equipment acoustic noise size distribution schematic representation
Fig. 2 lands the schematic representation of case in user mode for embodiment of the present utility model
Fig. 3 is work cell frame module and side wall body annexation figure.
Embodiment
Among Fig. 2,3, the case skeleton supporting structure of landing adopts the frame type modular structure, and each work cell of gas turbine unit (as between control room, subsidiary engine, between turbine, between exhaust chamber, gear-box, between generator) independently is divided into module separately.The case 1 that lands comprises the frame structure of being made up of beam in length and breadth 2 and is arranged on body of wall 3 in the framework.Frame structure 2 comprises work cell frame module 7 and top cover frame module; Body of wall 3 comprises side wall body 11 and crown wall body 12.Longeron 4 adopts H shaped steel, and the bottom is fixed on the reinforced concrete foundation 5 by EXPANSION ANCHOR BOLTS.Be connected to form each work cell frame module 7 of unit with longitude and latitude alternating expression I-steel (crossbeam 6) by bolt between each column, have angle steel to strengthen connecting between each column and between each I-steel.On the frame module of each work cell, form the top cover frame module of work cell separately by I-steel.Adopt bolt to be connected between top cover frame module and the work cell frame module 7, if with after connecting bolt all unclamps between top cover frame module and the work cell frame module, the top cover frame module can and lift by crane and remove with the disengaging of work cell frame module.
Unit 9 is landing in the case 1.Separate with reinforced concrete foundation 5 on the chassis 10 of unit 9, and reinforced concrete foundation is independently poured into a mould, and gives with the vibration transfer that reduces unit and land case 1, and the case of avoiding causing landing produces noise because of vibration.
It is neat and artistic that this lands the case outward appearance, and it is convenient that transportation is installed, and noise reduction effect has reached China's " industrial enterprise's noise sanitary standard ".
Claims (5)
1. the case that uses on the gas turbine is characterized in that: be connected on the ground that is independent of the gas turbine chassis bottom the case.
2. case according to claim 1 is characterized in that: described case comprises the frame structure of being made up of beam in length and breadth and is arranged on body of wall in the framework.
3. case according to claim 2 is characterized in that: described body of wall comprises outer wall, have the inwall of through hole and be filled in slag wool between the inside and outside wall.
4. case according to claim 3 is characterized in that: the density of described slag wool is 0.1g/cm
3
5. according to the described arbitrary case of claim 1-4, it is characterized in that: described ground is a reinforced concrete base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200364662U CN201014146Y (en) | 2007-03-27 | 2007-03-27 | Cover used in gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200364662U CN201014146Y (en) | 2007-03-27 | 2007-03-27 | Cover used in gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201014146Y true CN201014146Y (en) | 2008-01-30 |
Family
ID=39025942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200364662U Expired - Lifetime CN201014146Y (en) | 2007-03-27 | 2007-03-27 | Cover used in gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201014146Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806449A (en) * | 2017-10-23 | 2018-03-16 | 胡永江 | A kind of noise reduction slag acoustic wave filter structure |
| CN110005526A (en) * | 2019-04-23 | 2019-07-12 | 江苏海事职业技术学院 | A kind of gas turbine housing being easily installed |
-
2007
- 2007-03-27 CN CNU2007200364662U patent/CN201014146Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806449A (en) * | 2017-10-23 | 2018-03-16 | 胡永江 | A kind of noise reduction slag acoustic wave filter structure |
| CN110005526A (en) * | 2019-04-23 | 2019-07-12 | 江苏海事职业技术学院 | A kind of gas turbine housing being easily installed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080130 |