CN201819614U - Device for stopping floc at inlet of fan drum - Google Patents
Device for stopping floc at inlet of fan drum Download PDFInfo
- Publication number
- CN201819614U CN201819614U CN2010205687351U CN201020568735U CN201819614U CN 201819614 U CN201819614 U CN 201819614U CN 2010205687351 U CN2010205687351 U CN 2010205687351U CN 201020568735 U CN201020568735 U CN 201020568735U CN 201819614 U CN201819614 U CN 201819614U
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- yarn
- floc
- air cooling
- baffling
- retaining
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Abstract
The utility model discloses a device for stopping floc at an inlet of a fan drum, which comprises an air cooling condenser and a floc stopping yarn attached to the surface of the air cooling condenser. The floc baffling yarn completely covers an outlet of the fan drum of the air cooling condenser. The floc baffling yarn is provided with a floc baffling yarn pressing strip, and the floc baffling yarn is fixed at the surface of the air cooling condenser by the floc baffling yarn pressing strip. A protective net is covered at the outer surface of the floc baffling yarn. The floc baffling yarn is a single-layer yarn net or a multi-layer yarn net, and the floc baffling yarn is made from the metal material or the nonmetal material. The pore diameters of the floc baffling yarn are 5-10mm. The device has the advantages that: (1) the running safety of a machine set is improved; (2) the running economical efficiency of the machine set is improved; (3) the raw material is easily obtained, the price of the raw material is low, and the raw material is convenient and flexible to use; and (4) the labor power is saved, and the water consumption for removing saline water is saved.
Description
Technical field:
The blower fan air duct inlet that the utility model device relates to the force ventilation direct air cooled condenser stops the device of floccule.
Background technology:
At present, along with the scarcity of water resource and the strictness day by day of environmental protection, one of the main economic and technical indices that has become the operation of examination power plant with drainage index in thermal power plant.The water yield of the wet type cooling system saving 70～80% of the comparable band cooling tower of direct air cooling system is adopted in the main frame cooling, is the most effective water saving measures.Therefore the northern area of China new power plant construction cooling system has generally adopted air cooling system.The force ventilation direct air cooling system is to be arranged in outer air cooling tubes condenser (the AIR COOLED CONDENSER of main building, abbreviation ACC) replacement is arranged in the conventional water cooling condenser of steam turbine below, adopt outside air that the steam discharge of steam turbine is cooled off and be condensed into condensate water, directly carry out heat exchange by cooler between air and steam, the ACC system of all operations at present supplies with the air that the steam discharge that condenses is used in the force ventilation mode.The technological process of ACC system is that turbine discharge is delivered in the outdoor air cooling tubes condenser by thick blow-off line, and the axial flow cooling blower makes ambient air stream subcooler outer surface, and steam discharge is condensed into water, and condensate water is carried back boiler through condensate pump again.
The air cooling tubes condenser in thermal power plant and blower fan generally are arranged on the exclusive scaoffold of steam turbine building A, and according to generating set capacity, platform is high 20～50 meters, and tens cooling units neatly, in rows and columns arrange regularly.Each unit constitutes the cooling triangle, and the both sides, top are air cooling tubes condenser tube banks, and the base, bottom is an axial flow blower.
The air cooling tubes condenser outer surface keeps clean, and helps keeping the air cooling tubes condenser good performance of heat dissipation.Should wash the air cooling tubes condenser outer surface every year 1～2 time, ash, the dirt that is deposited between the air cooling tubes condenser fin cleaned up.And in the northern area of China, the planting range of willow, willow is very wide, nearly 1 month time is arranged annual spring, aerial all can floating a large amount of poplars wadding, catkin etc., these floccules are easy to be sucked by the axial flow blower of ACC system, attached to the air cooling tubes condenser lower surface, seriously influenced the heat dispersion of air cooling tubes condenser.Especially in summer, environment dry-bulb temperature is higher, and the heat that ACC can take away itself is just very limited, will cause back pressure to raise, and economy, safe operation are impacted.Under the dirty situation of air cooling heat radiator surface attachment, the ruuning situation of unit is just more abominable.Domestic certain 600MW unit is under the situation of air cooling heat radiator surface attachment floccule, its steam turbine is exerted oneself and only can be reached 60%～70% of nominal output, if the influence of superpose unfavorable wind speed or wind direction can cause that then back pressure sharply rises, cause unit to jump machine, influence the safety of electrical network.Though this unit has been taked the remedial measure of flushing air cooling tubes condenser outer surface, is bonded in the air cooling tubes condenser outer surface on the contrary behind the pre-water of floccule, the flushing difficulty is very big, and the cycle is very long, has not only expended a lot of manpowers, and has increased the demineralized water consumption.Operating cost increases greatly.
Therefore, be necessary to study a kind of device that stops floccule attached to the air cooling tubes condenser surface, make air cooling tubes condenser all keep higher radiating efficiency,, improve security to guarantee the steam turbine economical operation in Various Seasonal.
The utility model content:
The purpose of this utility model is to provide a kind of floccule that stops attached to the air cooling tubes condenser surface, improves the device (hereinafter to be referred as retaining wadding yarn) of air cooling tubes condenser heat dispersion.
The purpose of this utility model is to overcome the shortcoming of above-mentioned prior art, and a kind of device that stops blower fan air duct inlet floccule is provided, and comprises air cooling tubes condenser and attached to the retaining wadding yarn on air cooling tubes condenser surface.
Described retaining wadding yarn covers the air duct outlet of air cooling tubes condenser fully.Described retaining wadding yarn is provided with retaining wadding yarn press strip, and retaining wadding yarn is fixed on the air cooling tubes condenser surface by retaining wadding yarn press strip.
Described retaining wadding yarn outer surface is coated with protection network.Described retaining wadding yarn is the single or multiple lift gauze, and its material is metal material or nonmetallic materials.The aperture of described retaining wadding yarn is 5-10mm.
The utility model has the advantages that:
(1) improves the unit operation security.Being provided with of yarn of retaining wadding can stop floccule effectively attached to the air cooling tubes condenser surface, keeps the good performance of heat dissipation of air cooling tubes condenser, makes the unit back pressure maintain reduced levels, reduced the probability of unit jumping machine.
(2) improve the unit operation economy.Being provided with of yarn of retaining wadding can stop floccule effectively attached to the air cooling tubes condenser surface, keeps the good performance of heat dissipation of air cooling tubes condenser, makes the unit back pressure maintain reduced levels, thereby the increase steam turbine is exerted oneself or reduced coal consumption, the economy of raising unit.For example the every reduction of back pressure 1kPa can reduce coal consumption～1g/Kw.h, for a 600MW unit, per hour can save 0.6 ton in coal, and by 1 year operation 5500h, 300 yuan of calculating of coal per ton can be saved 990,000 yuan of operating costs.
(3) raw material are easy to obtain, and low price is easy to use flexible.
(4) save manpower, save the demineralized water water consumption.
Description of drawings:
Fig. 1 is a retaining wadding yarn horizontal layout schematic diagram of the present utility model;
Fig. 2 is that retaining wadding yarn of the present utility model is installed profile;
Wherein: 1 is air duct; 2 is blade; 3 are retaining wadding yarn; 4 is protection network; 5 are retaining wadding yarn press strip.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail:
Referring to Fig. 1-2, a kind of device that stops blower fan air duct inlet floccule comprises air cooling tubes condenser and attached to the retaining wadding yarn on air cooling tubes condenser surface.
Described retaining wadding yarn covers the air duct outlet of air cooling tubes condenser fully.Described retaining wadding yarn is provided with retaining wadding yarn press strip, and retaining wadding yarn is fixed on the air cooling tubes condenser surface by retaining wadding yarn press strip.
Described retaining wadding yarn outer surface is coated with protection network.Described retaining wadding yarn is the single or multiple lift gauze, and its material is metal material or nonmetallic materials.The aperture of described retaining wadding yarn is 5-10mm.
It is annual before spring, floccule arrived, fixedly one deck keeps off the wadding yarn on the protective cover of axial flow blower air duct lower edge, the pore-size of retaining wadding yarn can be tackled aerial floccule, can not produce excessive resistance again, cause that fan delivery reduces, thereby keep the heat-sinking capability of air cooling tubes condenser to be in higher level, improve the economy and the security of unit.Even the floccule on retaining wadding yarn causes that the fans entrance local resistance increases, fan delivery is reduced, the environment dry bulb temperature in spring is lower, and the back pressure of unit can also maintain lower level.After floccule disappears, remove retaining wadding yarn more aloft, make the ACC system when the summer environment condition is worst, keep good air feed ability and heat dispersion.Can use after the cleaning of the retaining pulled down wadding yarn, what be difficult to individually to clear up is replaceable again.
Retaining wadding yarn is an individual layer gauze, and metal material or nonmetallic materials all can.Pore-size is taken all factors into consideration the shape of floccule and the factors such as resistance at fans entrance place determine that the diameter of every windproof net and blower fan air duct diameter are complementary.Retaining wadding yarn is tiled on the protective cover of fans entrance air duct, and for excessive distortion or curling takes place under blast anti-backstop wadding yarn, retaining wadding yarn is fixed on the protective cover equably, also can add edge-pressing strip, keeps its flatness.
Above content is to further describing that the present invention did in conjunction with concrete preferred implementation; can not assert that the specific embodiment of the present invention only limits to this; for the general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; can also make some simple deduction or replace, all should be considered as belonging to the present invention and determine scope of patent protection by claims of being submitted to.
Claims (6)
1. device that stops blower fan air duct inlet floccule is characterized in that: comprise air cooling tubes condenser and attached to the retaining wadding yarn on air cooling tubes condenser surface.
2. a kind of according to claim 1 device that stops blower fan air duct inlet floccule is characterized in that: described retaining wadding yarn covers the air duct outlet of air cooling tubes condenser fully.
3. a kind of according to claim 1 device that stops blower fan air duct inlet floccule is characterized in that: described retaining wadding yarn is provided with retaining wadding yarn press strip, and retaining wadding yarn is fixed on the air cooling tubes condenser surface by retaining wadding yarn press strip.
4. a kind of according to claim 1 device that stops blower fan air duct inlet floccule is characterized in that: described retaining wadding yarn outer surface is coated with protection network.
5. a kind of according to claim 1 device that stops blower fan air duct inlet floccule is characterized in that: described retaining wadding yarn is the single or multiple lift gauze, and its material is metal material or nonmetallic materials.
6. a kind of according to claim 1 device that stops blower fan air duct inlet floccule is characterized in that: the aperture of described retaining wadding yarn is 5-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205687351U CN201819614U (en) | 2010-10-20 | 2010-10-20 | Device for stopping floc at inlet of fan drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205687351U CN201819614U (en) | 2010-10-20 | 2010-10-20 | Device for stopping floc at inlet of fan drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819614U true CN201819614U (en) | 2011-05-04 |
Family
ID=43917564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205687351U Expired - Lifetime CN201819614U (en) | 2010-10-20 | 2010-10-20 | Device for stopping floc at inlet of fan drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201819614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273458A (en) * | 2019-06-26 | 2019-09-24 | 中山市恒辉自动化科技有限公司 | A kind of floating wadding processing unit of textile sewage advection section catching type |
-
2010
- 2010-10-20 CN CN2010205687351U patent/CN201819614U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273458A (en) * | 2019-06-26 | 2019-09-24 | 中山市恒辉自动化科技有限公司 | A kind of floating wadding processing unit of textile sewage advection section catching type |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA Free format text: FORMER NAME: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING GROUP Address before: 710075 Xi'an province high tech Development Zone, unity South Road, No. 22, No. Patentee before: Northwest Electric Power Design Institute, China Power Engineering Consulting Group Corporation |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |