CN105649396A - Load-shedding windproof chimney protective cover - Google Patents
Load-shedding windproof chimney protective cover Download PDFInfo
- Publication number
- CN105649396A CN105649396A CN201610040105.9A CN201610040105A CN105649396A CN 105649396 A CN105649396 A CN 105649396A CN 201610040105 A CN201610040105 A CN 201610040105A CN 105649396 A CN105649396 A CN 105649396A
- Authority
- CN
- China
- Prior art keywords
- chimney
- protective cover
- load
- cover body
- karman vortex
- 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.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention relates to a load-shedding windproof chimney protective cover. The chimney protective cover is provided with a protective cover body installed on a chimney, a multi-hole shape is distributed on the protective cover body to form a fractal grid structure penetrating through an outer cover face and an inner cover face, and the fractal grid structure is used for restraining Karman Vortex Street on the surface of the chimney and preventing chimney resonance. The protective cover body is designed into the fractal grid frame structure, according to the principle that a fractal grid generates microturbulence easily, when incoming flow bypasses the chimney, microturbulence is generated on the surface of the chimney to disturb generation of the Karman Vortex Street, generation of the Karman Vortex Street is restrained, and resonance is avoided. The load-shedding windproof chimney protective cover is simple in structure, convenient to obtain and capable of effectively protecting the chimney and saves cost.
Description
Technical field
The present invention relates to and install protective cover additional outside a kind of chimney, especially one can suppress Karman vortex street to be formed, and reaches the purpose off-load wind-proof chimney protective cover avoiding producing resonance.
Background technology
As it is shown in figure 1, when permanent incoming flow 4 under certain condition walks around chimney 3, the chimney 3 object both sides direction of rotation that can periodically come off is contrary and be arranged in well-regulated biserial line vortex. During beginning, this two alignments whirlpool keeps the motion of self to advance respectively, and then they interfere with each other, and attract each other, and disturb increasing, forms nonlinear so-called Karman vortex street phenomenon. When eddy current 5 shedding frequence is close to the natural frequency of vibration, periodic vibration can cause resonance thus producing large-amplitude vibration. This all there is the example being damaged due to resonance both at home and abroad, so must be paid attention to.
Traditional structures under wind countermeasure is to resist the effect of wind load by strengthening structure stiffness by itself, such as patent " a kind of reinforced concrete single-tube chimney inner tube wall prestressing force composite reinforcing structure " (patent No.: 201220321309.7); " ruggedized construction of concrete chimney " (patent No.: 200920318952.2), this is a kind of passiveness, uneconomic method.
Summary of the invention
The present invention is to provide for a kind of off-load wind-proof chimney protective cover, is used for suppressing Karman vortex street to be formed, thus reaching the purpose avoiding producing resonance.
For achieving the above object, the technical scheme is that a kind of off-load wind-proof chimney protective cover, there is a protective cover cover body being arranged on chimney, described protective cover cover body is distributed porous shape and forms the fractal network running through outer cover and interior mask surface, for suppressing chimney surface Karman vortex street to generate, it is to avoid chimney resonates.
The shape being shaped as protective cover facade projection shape geometric similarity in the plurality of hole. Protective cover cover body is connected by Fixed latches with chimney. Protective cover cover body is made up of glass steel material. Described Fixed latches is made up of quality of rubber materials.
The invention has the beneficial effects as follows:
1. protective cover cover body is designed as fractal grid frame structure, is destroyed the formation of Karman vortex street by the microturbulence disturbance of its generation, can actively resist wind load, be prevented effectively from chimney and produce resonance.
2. cover body adopts Fixed latches to be connected with chimney, can be directly mounted on existing chimney, and transformation is convenient, and economy is high.
3. protective cover is made up of glass steel material, and the intensity of glass-reinforced plastic material is high, lightweight and ageing-resistant.
4. Fixed latches selects quality of rubber materials, high resilience, reduces the friction of cover body and chimney wall, protects chimney.
Accompanying drawing explanation
Fig. 1 is Karman vortex street phenomenon schematic diagram;
Fig. 2 is the off-load wind-proof chimney protective roof structure schematic diagram of the present invention;
Fig. 3 is the fractal grid direction view of protective cover;
Fig. 4 is the sectional view of Fixed latches;
Fig. 5 is the off-load wind-proof chimney protective cover fundamental diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described with embodiment.
As shown in Figures 2 to 5, a kind of off-load wind-proof chimney protective cover, including protective cover cover body 1, Fixed latches 2.
Protective cover cover body 1 is distributed porous shape and forms the fractal network running through outer cover and interior mask surface, be used for suppressing chimney surface Karman vortex street to generate, it is to avoid chimney resonates. The shape being shaped as protective cover facade projection shape geometric similarity in multiple holes on protective cover cover body 1, meets the fractal shape of grid mesopore simultaneously and has self-similarity with the distribution shape in hole and wind can be made to pass through. Fixed latches 2 is used for connecting chimney 3 and protective cover cover body 1. Protective cover cover body 1 is made up of glass steel material, and the intensity of glass-reinforced plastic material is high, lightweight and ageing-resistant. Fixed latches 2 is made up of quality of rubber materials, excellent spring, and wearability is strong and ageing-resistant. The scope that protective cover cover body 1 is installed is being born in the middle part of the chimney 3 of bigger wind speed to top.
The present invention is by being designed as fractal grid frame structure by protective cover cover body 1; as shown in Figure 5; the principle of microturbulence it is easily generated, when incoming flow 4 walks around chimney 3 so that it is produce microturbulence 6 on chimney 3 surface and suppress Karman vortex street to generate according to fractal grid; interference produces Karman vortex street phenomenon; thus reach to avoid the purpose of resonance, and its simple in construction, it is simple to realize; save cost, can effectively chimney be protected.
Claims (5)
1. an off-load wind-proof chimney protective cover, there is a protective cover cover body (1) being arranged on chimney (3), it is characterized in that: described protective cover cover body (1) upper distribution porous shape forms the fractal network running through outer cover and interior mask surface, for suppressing chimney (3) surface Karman vortex street to generate, it is to avoid chimney resonates.
2. off-load wind-proof chimney protective cover according to claim 1, it is characterised in that: the shape being shaped as protective cover facade projection shape geometric similarity in the plurality of hole.
3. off-load wind-proof chimney protective cover according to claim 1, it is characterised in that: described protective cover cover body (1) is connected by Fixed latches (2) with chimney (3).
4. off-load wind-proof chimney protective cover according to claim 1, it is characterised in that: described protective cover cover body (1) is made up of glass steel material.
5. off-load wind-proof chimney protective cover according to claim 3, it is characterised in that: described Fixed latches (2) is made up of quality of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040105.9A CN105649396A (en) | 2016-01-21 | 2016-01-21 | Load-shedding windproof chimney protective cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610040105.9A CN105649396A (en) | 2016-01-21 | 2016-01-21 | Load-shedding windproof chimney protective cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105649396A true CN105649396A (en) | 2016-06-08 |
Family
ID=56486952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610040105.9A Pending CN105649396A (en) | 2016-01-21 | 2016-01-21 | Load-shedding windproof chimney protective cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105649396A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923106A (en) * | 2016-06-12 | 2016-09-07 | 上海理工大学 | Segmental floating type wind machine mooring of fractal structure |
| CN111696315A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Wind vibration safety early warning method for towering tower equipment |
| CN112554631A (en) * | 2020-11-09 | 2021-03-26 | 赵涛 | Intelligent tower vibration suppression equipment for wind generating set |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581449A (en) * | 1967-08-23 | 1971-06-01 | Rohde & Schwarz | Apparatus for reducing karman vortex street effects on a structure |
| JPH1136665A (en) * | 1997-07-23 | 1999-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration proof device of straight cylinder type chimney |
| CN201318738Y (en) * | 2008-10-07 | 2009-09-30 | 高洪亮 | Protecting cover of chimney |
| CN202416621U (en) * | 2012-01-09 | 2012-09-05 | 苏州云白环境设备制造有限公司 | Chimney damper |
| CN104264585A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Stay cable with porous hollow housing for cable stayed bridge |
-
2016
- 2016-01-21 CN CN201610040105.9A patent/CN105649396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581449A (en) * | 1967-08-23 | 1971-06-01 | Rohde & Schwarz | Apparatus for reducing karman vortex street effects on a structure |
| JPH1136665A (en) * | 1997-07-23 | 1999-02-09 | Ishikawajima Harima Heavy Ind Co Ltd | Vibration proof device of straight cylinder type chimney |
| CN201318738Y (en) * | 2008-10-07 | 2009-09-30 | 高洪亮 | Protecting cover of chimney |
| CN202416621U (en) * | 2012-01-09 | 2012-09-05 | 苏州云白环境设备制造有限公司 | Chimney damper |
| CN104264585A (en) * | 2014-09-17 | 2015-01-07 | 上海大学 | Stay cable with porous hollow housing for cable stayed bridge |
Non-Patent Citations (1)
| Title |
|---|
| ANTON A.VERBEEK ETC: "Fractal turbulence enhancing low-swirl combustion", 《COMBUSTION AND FLAME》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105923106A (en) * | 2016-06-12 | 2016-09-07 | 上海理工大学 | Segmental floating type wind machine mooring of fractal structure |
| CN111696315A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Wind vibration safety early warning method for towering tower equipment |
| CN111696315B (en) * | 2019-03-15 | 2022-01-04 | 中国石油化工股份有限公司 | Wind vibration safety early warning method for towering tower equipment |
| CN112554631A (en) * | 2020-11-09 | 2021-03-26 | 赵涛 | Intelligent tower vibration suppression equipment for wind generating set |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |
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| RJ01 | Rejection of invention patent application after publication |