CN111854514A - Local guiding device of ball collecting net - Google Patents
Local guiding device of ball collecting net Download PDFInfo
- Publication number
- CN111854514A CN111854514A CN202010619267.4A CN202010619267A CN111854514A CN 111854514 A CN111854514 A CN 111854514A CN 202010619267 A CN202010619267 A CN 202010619267A CN 111854514 A CN111854514 A CN 111854514A
- Authority
- CN
- China
- Prior art keywords
- ball collecting
- flow guide
- ball
- collecting net
- guide device
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 230000009471 action Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 9
- 230000003749 cleanliness Effects 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G2015/006—Arrangements for processing a cleaning fluid after use, e.g. filtering and recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a local flow guide device for a ball collecting net, which comprises a circulating water pipeline, a ball collecting net actuating mechanism shaft, a wing-shaped section flow guide device, a ball collecting pipeline and a flow baffle plate, wherein the ball collecting net, the ball collecting net actuating mechanism shaft, the wing-shaped section flow guide device, the ball collecting pipeline and the flow baffle plate are arranged on the circulating water pipeline, rubber balls are carried by circulating water, flow into the circulating water pipeline along an inlet above the circulating water pipeline and sequentially pass through the ball collecting net, the wing-shaped section flow guide device, the flow baffle plate and the ball collecting pipeline to return to a rubber ball circulation loop, the wing-shaped section flow guide device is positioned above the ball collecting pipeline, the wing-shaped section flow guide device and the local arrangement mode are adopted, the flow baffle plate is fixed on the wall surface of the circulating water pipeline and is used for matching the adhesion of the ball collecting net to the wall surface, the flow resistance, the rubber ball cleaning system is optimized, the ball collecting rate of the rubber balls is improved, and the cleanliness of the condenser is improved.
Description
Technical Field
The invention relates to the technical field of data thermal power generation, in particular to a local flow guide device of a ball collecting net.
Background
The social requirement on the thermal power industry is higher and higher, the energy conservation and emission reduction pressure of the thermal power industry is still huge, and the requirement on how to improve the thermal efficiency and economy of the thermal power unit is increasingly urgent. Obviously, energy conservation and consumption reduction are the subjects of future development of the thermal power industry. The cleanliness of the pipe wall of the condenser directly influences the back pressure of the steam turbine and the difference between the upper end and the lower end of the condenser. According to the related thermal test, the vacuum degree of the small condenser is increased by 1kpa, and the steam consumption rate of the unit is reduced by 1.5-2.5%, so that the safe and stable operation of the whole unit is ensured, and the load is smoothly carried. The cleanliness of the condenser tube bundle of the unit is improved, the method is important for energy conservation and emission reduction of a thermal power plant and safe and stable operation of the unit, and the economic benefit brought by the method is also very obvious.
In order to maintain the cleanliness of the condenser tube bundle, each thermal power plant generally uses a rubber ball cleaning system to maintain the cleanliness of the condenser (the domestic design cleaning coefficient is 0.80-0.85). The automatic sponge ball cleaning of the condenser is to extrude sponge balls larger than the inner diameter of a condenser pipe into the condenser pipe of the condenser under the action of water flow, scrub the condenser pipe, maintain the inner wall of the condenser pipe clean, and ensure that the designed heat exchange efficiency of the condenser is not reduced, so that the end difference of the condenser and the back pressure of a steam turbine are maintained; meanwhile, the inner wall of the condensation pipe is prevented from being corroded, the running condition is improved, and the service life of the unit is prolonged. However, for a variety of reasons, the input and ball collection rates of many glue ball cleaning systems are undesirable. Affecting the ball collecting rate of the rubber ball. The output of the rubber ball pump is insufficient or dead areas of the condenser can cause certain influence on the ball collecting rate, and when the pressure difference of the ball collecting net or the flow guide device can not meet the requirements, the problems that the net plate of the ball collecting net is accumulated with balls and even the ball collecting pipeline is blocked can be caused.
Based on the technical scheme, the invention designs the partial flow guide device of the ball collecting net to solve the problems, and the improved rubber ball cleaning system enables the unit to generate more power, has high efficiency and low consumption and brings obvious economic benefits.
Disclosure of Invention
The present invention is directed to a local flow guiding device for a ball collecting net, which solves the above problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a local flow guide device for a ball collecting net comprises a circulating water pipeline, a ball collecting net actuating mechanism shaft, a wing-shaped section flow guide device, a ball collecting pipeline and a flow baffle plate which are arranged on the circulating water pipeline,
the rubber balls are carried by circulating water, flow in along an inlet above the circulating water pipeline, sequentially pass through the ball collecting net, the wing-shaped section flow guide device, the flow baffle plate and the ball collecting pipeline, and return to a rubber ball circulating loop,
the ball collecting net is used for moving the rubber balls downwards along the ball collecting net, and the rubber balls are separated from the cooling water;
the ball collecting net actuating mechanism shaft is fixed with the ball collecting net and used for fixing the ball collecting net;
the airfoil section flow guide device is positioned above the ball collecting pipeline, adopts an airfoil section and local arrangement mode and is used for improving a flow field in front of a ball collecting net;
The ball collecting pipeline is used for recovering the rubber balls;
the flow baffle is fixed on the wall surface of the circulating water pipeline and used for matching with the attachment of the ball collecting net to the wall surface.
Preferably, the ball collecting net is arranged on a water outlet pipe section of circulating water of the condenser, and the mesh is smaller than the diameter of the rubber ball.
Preferably, the ball receiving net actuating mechanism shaft adjusts the angle of the rubber ball receiving net under the coordination action of the actuating mechanism, and switches the ball receiving position, the non-ball receiving position and the backwashing position.
Preferably, the application of the airfoil section flow guide device is not limited to the SD type single-piece ball collecting net, the SF type two ball collecting pipelines and the cone type ball collecting net with one ball collecting pipeline.
Preferably, the flow baffle is fixed on the wall surface of the circulating water pipeline along the vertical direction.
Preferably, the airfoil of the airfoil section flow guide device comprises an upper part chord line structure and a middle part arc structure, the upper part chord line structure and the middle part arc structure are welded with the pipe wall of the circulating water pipe along the horizontal chord line structure, and the middle part arc structure faces the ball collecting net.
Preferably, the airfoil section flow guide device has an upward airfoil leading edge point and a downward airfoil trailing edge point, the airfoil trailing edge angle of the airfoil section flow guide device is close to the angle of the ball collecting net, and the included angle is less than or equal to 20 degrees.
Preferably, a concave hole is arranged at the tail edge of the airfoil section of the flow guide device.
Compared with the prior art, the invention has the beneficial effects that: by adopting the wing-shaped section flow guide device, the flow resistance in a circulating water pipe is reduced, the problem of net plate ball accumulation of non-funnel type ball collecting nets such as a movable grid single plate type and a split flow type is effectively solved, the ball collecting rate of the rubber ball cleaning system reaches more than 95%, the rubber ball cleaning system is optimized, the ball collecting rate of the rubber ball is improved, and the cleanliness of a condenser is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of an airfoil section flow guiding device according to the present invention;
fig. 3 is a right side view of an aerofoil section flow guiding device of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a circulating water pipeline; 2. collecting the ball net; 3. a ball web actuator shaft; 4. an aerofoil section flow guiding device; 401. a string structure; 402. an arc-shaped structure; 403. a leading edge; 404. a trailing edge; 405. concave holes; 5. a ball receiving pipeline; 6. keep off the flow board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-3, the present invention provides a technical solution: a ball collecting net local flow guiding device, which comprises a circulating water pipeline 1, a ball collecting net 2 arranged on the circulating water pipeline 1, a ball collecting net actuating mechanism shaft 3, a wing-shaped section flow guiding device 4, a ball collecting pipeline 5 and a flow baffle 6,
the rubber balls are carried by the circulating water, flow in along the inlet above the circulating water pipeline 1, sequentially pass through the ball collecting net 2, the wing section flow guide device 4, the flow baffle 6 and the ball collecting pipeline 5, return to the rubber ball circulating loop,
the ball collecting net 2 is a key device in the rubber ball cleaning system and is arranged on a water outlet pipe section of circulating water of the condenser, and the mesh is smaller than the diameter of the rubber ball. For moving the rubber balls downwards along the ball collecting net 2, and separating the rubber balls from the cooling water;
The ball collecting net actuating mechanism shaft 3 is fixed with the ball collecting net 2 and used for fixing the ball collecting net, and the ball collecting net actuating mechanism shaft 3 adjusts the angle of the rubber ball collecting net 2 under the coordination effect of the actuating mechanism and switches a ball collecting position, a non-ball collecting position and a back flushing position.
The aerofoil section flow guide device 4 is positioned above the ball collecting pipeline 5 and adopts an aerofoil section and local arrangement mode: compared with the prior art, the ball collecting pipeline adopts a local flow guide mode, is suitable for various ball collecting pipeline arrangement modes, and has strong adaptability. For improving the flow field in front of the ball collecting net 2, wherein the airfoil of the airfoil section flow guiding device 4 comprises an upper part chord line structure 401 and a middle part arc structure 402, the horizontal chord line structure 401 is welded with the pipe wall of the circulating water pipe 1, and the middle part arc structure 402 faces the ball collecting net. The point of the front edge 403 of the airfoil section flow guide device 4 is upward, the point of the rear edge 404 is downward, the point of the front edge 403 of the airfoil is upward to flow, the point of the rear edge 404 is downward to guide flow, and the increased resistance to a circulating water system is smaller while the flow of the fluid in front of the ball collecting net plate is guided. The angle of the airfoil trailing edge 404 of the airfoil section flow guide device 4 is close to that of the ball collecting net 2, the included angle is less than or equal to 20 degrees, vortex can be generated on the airfoil trailing edge 404 under the condition of not causing large system resistance, the flow rate of circulating water in front of the net plate is increased by means of negative pressure generated by the vortex, and the problem of ball accumulation in front of the net plate can be remarkably improved; concave holes 405 are formed in the tail edge of the airfoil section flow guide device 4, and resistance caused by boundary layer separation and vortex formed by the boundary layer separation is reduced based on further flow field velocity distribution of boundary layer flow.
The application of the airfoil section flow guiding device 4 is not limited to SD type single-piece ball collecting net, SF type two ball collecting pipelines and cone type ball collecting net with 4 ball collecting pipelines.
The ball collecting pipeline 5 is used for recovering the rubber balls;
the flow baffle 6 is fixed on the wall surface of the circulating water pipeline 1 along the vertical direction and is used for matching with the attachment of the ball collecting net 2 to the wall surface.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. A partial flow guide device of a ball collecting net is characterized in that: comprises a circulating water pipeline (1), a ball collecting net (2), a ball collecting net actuating mechanism shaft (3), a wing-shaped section flow guide device (4), a ball collecting pipeline (5) and a flow baffle plate (6) which are arranged on the circulating water pipeline (1),
the rubber balls are carried by circulating water, flow in along an inlet above the circulating water pipeline (1), sequentially pass through the ball collecting net (2), the wing-shaped section flow guide device (4), the flow baffle plate (6) and the ball collecting pipeline (5) and return to a rubber ball circulating loop,
the ball collecting net (2) is used for moving the rubber balls downwards along the ball collecting net (2), and the rubber balls are separated from the cooling water;
the ball collecting net actuating mechanism shaft (3) is fixed with the ball collecting net (2) and used for fixing the ball collecting net;
the airfoil section flow guide device (4) is positioned above the ball collecting pipeline (5), adopts an airfoil section and local arrangement mode and is used for improving a flow field in front of the ball collecting net (2);
the ball collecting pipeline (5) is used for recovering the rubber balls;
the flow blocking plate (6) is fixed on the wall surface of the circulating water pipeline (1) and used for matching with the attachment of the ball collecting net (2) to the wall surface.
2. A web partial flow guide as claimed in claim 1, wherein: the ball collecting net (2) is arranged on a water outlet pipe section of circulating water of the condenser, and the diameter of a mesh is smaller than that of a rubber ball.
3. A web partial flow guide as claimed in claim 1, wherein: the ball receiving net actuating mechanism shaft (3) adjusts the angle of the rubber ball receiving net (2) under the coordination action of the actuating mechanism, and switches a ball receiving position, a non-ball receiving position and a back flushing position.
4. A web partial flow guide as claimed in claim 1, wherein: the application of the airfoil section flow guide device (4) is not limited to an SD type single-chip ball collecting net, an SF type ball collecting pipeline with two ball collecting pipelines and a conical ball collecting net with 4 ball collecting pipelines.
5. A web partial flow guide as claimed in claim 1, wherein: the flow baffle (6) is fixed on the wall surface of the circulating water pipeline (1) along the vertical direction.
6. A web partial flow guide as claimed in claim 1, wherein: the airfoil of the airfoil section flow guide device (4) comprises an upper part chord line structure (401) and a middle part arc structure (402), the upper part chord line structure (401) and the middle part arc structure (402) are welded with the pipe wall of the circulating water pipe (1) along the horizontal chord line structure (401), and the middle part arc structure (402) faces towards a ball net.
7. A web partial flow guide as claimed in claim 1, wherein: the point of the airfoil front edge (403) of the airfoil section flow guide device (4) faces upwards, the point of the airfoil rear edge (404) of the airfoil section flow guide device (4) faces downwards, the angle of the airfoil rear edge (404) of the airfoil section flow guide device (4) is close to that of the ball collecting net (2), and the included angle is not more than 20 degrees.
8. A web partial flow guide as claimed in claim 1, wherein: and a concave hole (405) is arranged at the tail edge of the airfoil section flow guide device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619267.4A CN111854514A (en) | 2020-07-01 | 2020-07-01 | Local guiding device of ball collecting net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010619267.4A CN111854514A (en) | 2020-07-01 | 2020-07-01 | Local guiding device of ball collecting net |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111854514A true CN111854514A (en) | 2020-10-30 |
Family
ID=72988304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010619267.4A Pending CN111854514A (en) | 2020-07-01 | 2020-07-01 | Local guiding device of ball collecting net |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111854514A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114091364A (en) * | 2021-10-08 | 2022-02-25 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for optimizing whole rubber ball system and flow field structure of rubber ball collecting net |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539115A (en) * | 1983-01-29 | 1985-09-03 | Taprogge Gesellschaft Gmbh | Device for removing cleaning balls from a cooling water stream |
| JPH0518693A (en) * | 1991-07-10 | 1993-01-26 | Plant Giken Kk | Removing device for cleaning ball |
| JPH0666495A (en) * | 1991-07-22 | 1994-03-08 | Plant Giken Kk | Device for extracting cleaning ball |
| CN2229647Y (en) * | 1995-03-13 | 1996-06-19 | 史政 | Arrow shape collecting ball-net apparatus for cleaning condensing water pipe scaling |
| CN201053846Y (en) * | 2007-05-31 | 2008-04-30 | 唐树功 | Ball recovery net |
| CN202915825U (en) * | 2012-09-19 | 2013-05-01 | 北京中能蓝天节能技术开发有限公司 | Improved structure of ball collecting net in rubber ball washing device of condenser |
| KR101361544B1 (en) * | 2013-06-24 | 2014-02-13 | (주)금우산기 | An apparatus for screening cleaning balls for cleaning cooling water pipes of a condenser in power plant |
| CN206131863U (en) * | 2016-09-27 | 2017-04-26 | 大唐陕西发电有限公司灞桥热电厂 | A ball screen device for among condenser rubber ball cleaning system |
| CN208333241U (en) * | 2018-06-21 | 2019-01-04 | 内蒙古机电职业技术学院 | A kind of device improving plant condenser cleaning glueballs ball collecting rate |
| CN208833079U (en) * | 2018-08-15 | 2019-05-07 | 北方联合电力有限责任公司临河热电厂 | A kind of rubber ball system ball screen |
| CN212658128U (en) * | 2020-07-01 | 2021-03-05 | 内蒙古大唐国际托克托发电有限责任公司 | Local guiding device of ball collecting net |
-
2020
- 2020-07-01 CN CN202010619267.4A patent/CN111854514A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539115A (en) * | 1983-01-29 | 1985-09-03 | Taprogge Gesellschaft Gmbh | Device for removing cleaning balls from a cooling water stream |
| JPH0518693A (en) * | 1991-07-10 | 1993-01-26 | Plant Giken Kk | Removing device for cleaning ball |
| JPH0666495A (en) * | 1991-07-22 | 1994-03-08 | Plant Giken Kk | Device for extracting cleaning ball |
| CN2229647Y (en) * | 1995-03-13 | 1996-06-19 | 史政 | Arrow shape collecting ball-net apparatus for cleaning condensing water pipe scaling |
| CN201053846Y (en) * | 2007-05-31 | 2008-04-30 | 唐树功 | Ball recovery net |
| CN202915825U (en) * | 2012-09-19 | 2013-05-01 | 北京中能蓝天节能技术开发有限公司 | Improved structure of ball collecting net in rubber ball washing device of condenser |
| KR101361544B1 (en) * | 2013-06-24 | 2014-02-13 | (주)금우산기 | An apparatus for screening cleaning balls for cleaning cooling water pipes of a condenser in power plant |
| CN206131863U (en) * | 2016-09-27 | 2017-04-26 | 大唐陕西发电有限公司灞桥热电厂 | A ball screen device for among condenser rubber ball cleaning system |
| CN208333241U (en) * | 2018-06-21 | 2019-01-04 | 内蒙古机电职业技术学院 | A kind of device improving plant condenser cleaning glueballs ball collecting rate |
| CN208833079U (en) * | 2018-08-15 | 2019-05-07 | 北方联合电力有限责任公司临河热电厂 | A kind of rubber ball system ball screen |
| CN212658128U (en) * | 2020-07-01 | 2021-03-05 | 内蒙古大唐国际托克托发电有限责任公司 | Local guiding device of ball collecting net |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114091364A (en) * | 2021-10-08 | 2022-02-25 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for optimizing whole rubber ball system and flow field structure of rubber ball collecting net |
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