CN105442510A - Trash blocking method capable of automatically adjusting height according to water level and floating type hydropower station trash blocking device - Google Patents
Trash blocking method capable of automatically adjusting height according to water level and floating type hydropower station trash blocking device Download PDFInfo
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- CN105442510A CN105442510A CN201510949502.3A CN201510949502A CN105442510A CN 105442510 A CN105442510 A CN 105442510A CN 201510949502 A CN201510949502 A CN 201510949502A CN 105442510 A CN105442510 A CN 105442510A
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- Prior art keywords
- assembly
- dirty
- buoyancy tank
- framework
- reservoir area
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- 238000007667 floating Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 230000000903 blocking effect Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010813 municipal solid waste Substances 0.000 title abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 230000010455 autoregulation Effects 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000009432 framing Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 abstract 3
- 238000000429 assembly Methods 0.000 abstract 3
- 208000027744 congestion Diseases 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 238000011109 contamination Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/06—Barriers therefor construed for applying processing agents or for collecting pollutants, e.g. absorbent
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a trash blocking method capable of automatically adjusting height according to water level and a floating type hydropower station trash blocking device, wherein a group of trash blocking assemblies are connected in series into a string and then connected to a buoyancy tank assembly, and the buoyancy tank assembly is in rolling connection with tracks arranged on concrete piers on two sides of a reservoir area; when the water level of the reservoir area changes, the buoyancy tank assemblies on the concrete pillars on the two sides of the reservoir area move up and down along the rails and always float on the water surface, so that the purpose of automatically adjusting the height of the sewage blocking assembly is achieved. According to the invention, through the floating box assemblies arranged on concrete pier columns on two sides of the reservoir area and the floating cylinders arranged on the trash rack assembly, the height of the trash rack on the trash rack assembly can be automatically adjusted along with the change of the water level, so that the trash rack is always at the height with the highest trash rack efficiency, the trash rack effect is greatly improved, the risk of congestion of the trash rack at the water inlet and the difficulty of trash cleaning are effectively reduced, and the safe operation of the generator set is ensured. The operation cost of the power station can be reduced, and the method has good economic benefit and popularization significance. [ b ]
Description
Technical field
the present invention relates to a kind of according to water auto-regulation height block dirty method and dirty device is blocked in floating type power station, belong to Hydraulic and Hydro-Power Engineering and block dirty technical field.
Background technology
in order to the foreign material in anti-sealing enter the generating set in power station, usually need in the water inlet forward position in power station to arrange and together fixedly block dirty device, be used for tackling the dirt swum in water, thus protection water turbine set.When run into flood or upstream dirt come amount larger time, block up at water inlet position with regard to having a large amount of dirts, artificial salvaging or plant equipment is no matter adopted to remove contamination, difficulty of removing contamination is deposited in capital, the problem that efficiency is not high, also can damage the structure of trashrack time serious, affect the normal operation of unit.
Summary of the invention
the object of the invention is to; there is provided a kind of according to water auto-regulation height block dirty method and dirty device is blocked in floating type power station; automatically the height blocking dirty device is regulated by buoyancy; for the reservoir area interception dirt before intake of hydropower station; the operation easier of a large amount of dirt cleaning before reducing trash rack for water inlet; protection trash rack for water inlet and unit equipment, improve efficiency of removing contamination.
technical scheme of the present invention is achieved in that
a kind of dirty method of blocking according to water auto-regulation height of the present invention is, the method sets up in existing fixed trashrack upstream together floating typely to block dirty device, protects fixed trashrack and unit for tackling large-scale dirt; Floating type block dirty device be one group is blocked dirty component string be unified into a string after be connected on buoyancy tank assembly, buoyancy tank assembly is connected with the non-orbiting scroll on two sides, the reservoir area performance of concrete column confined be located at; When the water level of reservoir area changes, the buoyancy tank assembly be positioned on the performance of concrete column confined of two sides, reservoir area moves up and down along track keeps afloat all the time, thus achieves the object of blocking dirty assembly automatic controlled height.
in preceding method, described in block dirty assembly and comprise framework, the upstream face of framework is provided with trashrack, by the foreign material in trashrack interception water, to guarantee the safety of generating set.
in preceding method, described in block dirty assembly framework in be provided with one group of floating drum, make to block dirty assembly self and also can bubble through the water column, alleviate the bearing capacity of buoyancy tank assembly.
in preceding method, described track adopts U-shaped structure, and U-shaped structure is provided with symmetrical boss, by coordinating of the groove in boss and buoyancy tank assembly two side wheel and rail contact face, prevent ripples spring up bottom roller and track departs from.
the floating type power station of one of the present invention constructed according to said method is blocked dirty device and is, this device comprise one group be connected in series block dirty assembly, one group of dirty assembly two ends of blocking be connected in series is connected with buoyancy tank assembly respectively, and buoyancy tank assembly is connected with the non-orbiting scroll be located on the performance of concrete column confined of two sides, reservoir area.
aforementionedly block in dirty device, described in block dirty assembly and comprise framework, framework is cuboid steel structure frame, and framework two ends are provided with attachment lug, and be provided with one group of floating drum in framework, the upstream face of framework is provided with trashrack.
aforementionedly block in dirty device, described one group be connected in series block dirty assembly through bearing pin by hinged for the attachment lug at framing two ends formation cascaded structure.
aforementionedly block in dirty device, described buoyancy tank assembly comprises buoyancy tank, and buoyancy tank both sides are respectively equipped with one group of roller, and roller is connected with the non-orbiting scroll be located on the performance of concrete column confined of two sides, reservoir area; Buoyancy tank is provided with attachment lug near side, reservoir area, and the attachment lug of the attachment lug on buoyancy tank on bearing pin and framework is hinged.
aforementionedly block in dirty device, described track is U-shaped structure, and boss symmetrical in U-shaped structure rolls with the groove fit of roller tread and is connected.
owing to have employed technique scheme, the present invention compared with prior art, the present invention is by being located at buoyancy tank assembly on the performance of concrete column confined of two sides, reservoir area and being located at the floating drum blocked on dirty assembly, can make to block drain grating on dirty assembly along with the change of water level automatic controlled height, drain grating is in all the time and blocks dirty most effective height, substantially increase and block dirty effect, reduce the risk that blocking up appears in trash rack for water inlet, ensure that the safe operation of generating set.The running cost in power station can be reduced, there is good economic benefit and dissemination.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention;
fig. 2 is the structural representation blocking dirty assembly;
fig. 3 is the structural representation of framework;
fig. 4 is the structural representation of trashrack;
fig. 5 is the connection diagram of buoyancy tank assembly and performance of concrete column confined.
being labeled as in figure: 1-blocks dirty assembly, 2-buoyancy tank assembly, 3-performance of concrete column confined, 4-track, 5-framework, 6-attachment lug, 7-floating drum, 8-trashrack, 9-bearing pin, 10-buoyancy tank, 11-roller, 12-boss, 13-groove.
Detailed description of the invention
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
of the present inventionly a kind ofly block dirty method according to water auto-regulation height, as shown in Figure 1: the method sets up in existing fixed trashrack upstream floating typely together to block dirty device, protects fixed trashrack and unit for tackling large-scale dirt; Floating type block dirty device be one group is blocked dirty assembly 1 be connected into a string after be connected on buoyancy tank assembly 2, buoyancy tank assembly 2 rolls with the track 4 on two sides, the reservoir area performance of concrete column confined 3 be located at and is connected; When the water level of reservoir area changes, the buoyancy tank assembly 2 be positioned on two sides, reservoir area performance of concrete column confined 3 moves up and down along track keeps afloat all the time, thus achieves the object of blocking dirty assembly 1 automatic controlled height.Block dirty assembly 1 and comprise framework 5, the upstream face of framework 5 is provided with trashrack 8, tackles foreign material larger in water by trashrack 8, reduces the risk that blocking up appears in trash rack for water inlet, to guarantee the safety of generating set.Be provided with one group of floating drum 7 in the framework blocking dirty assembly 1, make to block dirty assembly 1 and self also can bubble through the water column, alleviate the bearing capacity of buoyancy tank assembly 2.Track 4 adopts U-shaped structure, and U-shaped structure is provided with symmetrical boss 12, by coordinating of the groove 13 of boss 12 and buoyancy tank assembly 2 liang of side wheels 11 and track 4 contact surface, prevent ripples spring up bottom roller 11 and track 4 departs from.
dirty device is blocked according to the floating type power station of one of the present invention that said method is constructed, as shown in Figure 1, comprise one group be connected in series block dirty assembly 1, one group of dirty assembly 1 two ends of blocking be connected in series is connected with buoyancy tank assembly 2 respectively, and buoyancy tank assembly 2 rolls with the track 4 be located on two sides, reservoir area performance of concrete column confined 3 and is connected.Block dirty assembly 1 as shown in Figure 2, comprise framework 5, framework 5 is cuboid steel structure frame (see figure 3), and framework 5 two ends are provided with attachment lug 6, is provided with one group of floating drum 7 in framework 5, and the upstream face of framework 5 is provided with trashrack 8(and sees Fig. 4).One group be connected in series block dirty assembly 1 through the attachment lug 6 hinged formation cascaded structure of bearing pin 9 by framing 5 two ends.Buoyancy tank assembly 2 as shown in Figure 5, comprises buoyancy tank 10, and buoyancy tank 10 both sides are respectively equipped with one group of roller 11, and roller 11 rolls with the track 4 be located on two sides, reservoir area performance of concrete column confined 3 and is connected; Buoyancy tank 10 is provided with attachment lug 6 near side, reservoir area, and the attachment lug of the attachment lug on buoyancy tank 10 on bearing pin 9 with framework 5 is hinged.Track 4 is U-shaped structure, and boss 12 symmetrical in U-shaped structure coordinates to roll with the groove 13 of roller 11 tread and is connected.
Embodiment
this example is in existing fixed trashrack forward position, and increase setting is floating type together blocks dirty device, for tackling large-scale dirt etc., protects fixed trashrack and unit.Conventional fixed trashrack, although can not move up and down with water level, its layouts is supreme the end of from, and blocking dirty scope is also from the bottom to the water surface, has its advantage, shortcoming be exactly dirty amount large time, will block up, difficulty of removing contamination, affects unit operation.Usual large-scale dirt, as branch etc., is all surface flotation, therefore adds ahead of the curve and floating typely block dirty device, can play a protective role.
what increased together floating typely blocks dirty device as shown in Figure 1, and in Fig. 1, arrow represents water (flow) direction.This example comprises performance of concrete column confined 3, and floating type blocks dirty assembly 1.Performance of concrete column confined 3 as shown in Figure 4, is made up of the track 4 of concrete foundation and steel work.Block dirty assembly 1 by framework 5, floating drum 7, bearing pin 9, trashrack 8, composition such as buoyancy tank assembly 2 grade.
performance of concrete column confined 3 is arranged in the two sides of reservoir area for blocking dirty assembly 1; Performance of concrete column confined 3 is fixed with track 4, track 4 is for supporting and fixing buoyancy tank assembly 2; Buoyancy tank assembly 2 comprises buoyancy tank 10, and buoyancy tank 10 both sides are provided with roller 11, and the attachment lug on buoyancy tank 10 is connected with the attachment lug blocking dirty assembly 1 end through bearing pin 9.Block dirty assembly 1 to be all interconnected by bearing pin 9 each other, block dirty assembly 1 and comprise framework 5, in framework 5, be provided with floating drum 7, for trashrack 8 provides buoyancy; Trashrack sheet is arranged on the upstream face side of framework 5, for tackling dirt.
fig. 1 is process chart of the present invention: performance of concrete column confined 3 is arranged in the two sides of reservoir area, blocks dirty assembly 1 two ends and is arranged on track 4 respectively by buoyancy tank assembly 2, thus dirty barrier is blocked in formation together, tackles the dirt under with current.
shown in Fig. 2, floating drum 7 symmetry is fixed in framework 5, and its quantity, size, installation site, according to the parameter adjustment such as size, weight of blocking dirty assembly 1, guarantee that trashrack 8 is in the upper and lower reasonable structural arrangement of the water surface.Trashrack 8 is that one group of vertically arranged thin plate is formed, and leaving hole each other, is arranged on the upstream face side of framework 5, for tackling dirt, and allowing current to pass through, reduce current to the pressure blocking dirty assembly 1.Framework 5 is rectangular frame structure, for fixing floating drum 7 and trashrack 8, bears dirt and current load, and load is finally delivered on buoyancy tank assembly 2 and track 4 by bearing pin 9.
shown in Fig. 5, buoyancy tank 10 is enclosed rigid structure, for installing roller 11, and provides buoyancy, guarantees that buoyancy tank assembly 2 can fluctuate with SEA LEVEL VARIATION.The tread of buoyancy tank assembly 2 upper roller 11 is concave structure, and be arranged on rail head that track 4 protrudes, pair roller 11 carries out spacing and guiding, roller devices derailing when preventing water flow fluctuation.
can be removed contamination by the ship of reservoir area owing to adding floating type trashrack, also can tow to bank by hook lock etc. and remove contamination, because floating type trashrack is arranged in reservoir area, operating space is large, and cleaning wants relatively easy.
Claims (9)
1. block a dirty method according to water auto-regulation height, it is characterized in that: the method sets up in existing fixed trashrack upstream floating typely together to block dirty device, protects fixed trashrack and unit for tackling large-scale dirt; Floating type block dirty device be one group is blocked dirty component string be unified into a string after be connected on buoyancy tank assembly, buoyancy tank assembly is connected with the non-orbiting scroll on two sides, the reservoir area performance of concrete column confined be located at; When the water level of reservoir area changes, the buoyancy tank assembly be positioned on the performance of concrete column confined of two sides, reservoir area moves up and down along track keeps afloat all the time, thus achieves the object of blocking dirty assembly automatic controlled height.
2. block dirty method according to claim 1 according to water auto-regulation height, it is characterized in that: described in block dirty assembly and comprise framework, the upstream face of framework is provided with trashrack, by the foreign material in trashrack interception water, to guarantee the safety of generating set.
3. block dirty method according to claim 2 according to water auto-regulation height, it is characterized in that: described in block dirty assembly framework in be provided with one group of floating drum, make to block dirty assembly self and also can bubble through the water column, alleviate the bearing capacity of buoyancy tank assembly.
4. block dirty method according to claim 3 according to water auto-regulation height, it is characterized in that: described track adopts U-shaped structure, U-shaped structure is provided with symmetrical boss, by coordinating of the groove in boss and buoyancy tank assembly two side wheel and rail contact face, prevent ripples spring up bottom roller and track departs from.
5. dirty device is blocked in the floating type power station that method is constructed according to the arbitrary claim of claim 1-4, it is characterized in that: comprise one group be connected in series block dirty assembly (1), one group of dirty assembly (1) two ends of blocking be connected in series is connected with buoyancy tank assembly (2) respectively, and buoyancy tank assembly (2) rolls with the track (4) be located on two sides, reservoir area performance of concrete column confined (3) and is connected.
6. dirty device is blocked in floating type power station according to claim 5, it is characterized in that: described in block dirty assembly (1) and comprise framework (5), framework (5) is cuboid steel structure frame, framework (5) two ends are provided with attachment lug (6), be provided with one group of floating drum (7) in framework (5), the upstream face of framework (5) is provided with trashrack (8).
7. dirty device is blocked in floating type power station according to claim 5, it is characterized in that: described one group be connected in series block dirty assembly (1) through attachment lug (6) the hinged formation cascaded structure of bearing pin (9) by a framing (5) two ends.
8. dirty device is blocked in floating type power station according to claim 5, it is characterized in that: described buoyancy tank assembly (2) comprises buoyancy tank (10), buoyancy tank (10) both sides are respectively equipped with one group of roller (11), and roller (11) rolls with the track (4) be located on two sides, reservoir area performance of concrete column confined (3) and is connected; Buoyancy tank (10) is provided with attachment lug (6) near side, reservoir area, and the attachment lug of the attachment lug on buoyancy tank (10) on bearing pin (9) with framework (5) is hinged.
9. dirty device is blocked in floating type power station according to claim 8, it is characterized in that: described track (4) is U-shaped structure, and boss (12) symmetrical in U-shaped structure coordinates to roll with the groove (13) of roller (11) tread and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949502.3A CN105442510A (en) | 2015-12-18 | 2015-12-18 | Trash blocking method capable of automatically adjusting height according to water level and floating type hydropower station trash blocking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949502.3A CN105442510A (en) | 2015-12-18 | 2015-12-18 | Trash blocking method capable of automatically adjusting height according to water level and floating type hydropower station trash blocking device |
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| Publication Number | Publication Date |
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| CN105442510A true CN105442510A (en) | 2016-03-30 |
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| CN201510949502.3A Pending CN105442510A (en) | 2015-12-18 | 2015-12-18 | Trash blocking method capable of automatically adjusting height according to water level and floating type hydropower station trash blocking device |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351181A (en) * | 2016-10-28 | 2017-01-25 | 合肥工业大学 | Intelligent W-shaped trash rack system |
| CN108265686A (en) * | 2018-03-08 | 2018-07-10 | 乐山市山鹰模具有限责任公司 | A kind of van-type steel blocks dirty drift |
| CN108677900A (en) * | 2018-05-18 | 2018-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Trash blocking and cleaning device capable of automatically lifting along with water level |
| CN108708358A (en) * | 2018-06-04 | 2018-10-26 | 贵阳锐航智能科技有限公司 | A kind of water environment blocks the floating drum of dirt |
| CN109440746A (en) * | 2018-11-19 | 2019-03-08 | 吴迎莉 | A kind of water conservancy Discussion On Measures of Rivers Pollution Treatment rubbish retention dam |
| CN110016902A (en) * | 2019-04-17 | 2019-07-16 | 上海勘测设计研究院有限公司 | Telescopic dirt blocking device on water |
| WO2019227879A1 (en) * | 2018-06-02 | 2019-12-05 | 深圳市深水水务咨询有限公司 | Floating mat cleaning system for rubbish at water intake of large water supply source project and construction method therefor |
| CN111236134A (en) * | 2019-10-18 | 2020-06-05 | 杨志光 | Movable spillway fish blocking gate |
| US10781565B2 (en) | 2018-06-02 | 2020-09-22 | Shenzhen Shenshui Water Resources Consulting Co., Ltd. | Water intake floating row cleaning system and construction method thereof |
| CN111926783A (en) * | 2020-07-07 | 2020-11-13 | 中南林业科技大学 | Floating type sewage blocking and discharging device for hydropower station |
| CN112267441A (en) * | 2020-09-27 | 2021-01-26 | 翁赛华 | Filter wall used in river channel |
| CN112295833A (en) * | 2020-10-30 | 2021-02-02 | 扬州市飞龙气动液压设备有限公司 | Floating type trash landscape fountain |
| CN112359793A (en) * | 2020-10-19 | 2021-02-12 | 杨玉庆 | Trash device for water conservancy and hydropower and using method thereof |
| CN113638381A (en) * | 2021-08-03 | 2021-11-12 | 宁波工程学院 | Hydraulic engineering river channel trash blocking device and installation method thereof |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351181B (en) * | 2016-10-28 | 2018-06-29 | 合肥工业大学 | The W-shaped trash rack system of intelligence |
| CN106351181A (en) * | 2016-10-28 | 2017-01-25 | 合肥工业大学 | Intelligent W-shaped trash rack system |
| CN108265686A (en) * | 2018-03-08 | 2018-07-10 | 乐山市山鹰模具有限责任公司 | A kind of van-type steel blocks dirty drift |
| CN108677900A (en) * | 2018-05-18 | 2018-10-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Trash blocking and cleaning device capable of automatically lifting along with water level |
| CN108677900B (en) * | 2018-05-18 | 2024-02-06 | 中国电建集团贵阳勘测设计研究院有限公司 | Dirt blocking and cleaning device capable of automatically lifting along with water level |
| US10781565B2 (en) | 2018-06-02 | 2020-09-22 | Shenzhen Shenshui Water Resources Consulting Co., Ltd. | Water intake floating row cleaning system and construction method thereof |
| WO2019227879A1 (en) * | 2018-06-02 | 2019-12-05 | 深圳市深水水务咨询有限公司 | Floating mat cleaning system for rubbish at water intake of large water supply source project and construction method therefor |
| CN108708358A (en) * | 2018-06-04 | 2018-10-26 | 贵阳锐航智能科技有限公司 | A kind of water environment blocks the floating drum of dirt |
| CN108708358B (en) * | 2018-06-04 | 2021-08-06 | 深圳市力德环保工程有限公司 | Water environment blocks flotation pontoon of dirty usefulness |
| CN109440746A (en) * | 2018-11-19 | 2019-03-08 | 吴迎莉 | A kind of water conservancy Discussion On Measures of Rivers Pollution Treatment rubbish retention dam |
| CN110016902B (en) * | 2019-04-17 | 2021-04-02 | 上海勘测设计研究院有限公司 | Telescopic dirt blocking device on water |
| CN110016902A (en) * | 2019-04-17 | 2019-07-16 | 上海勘测设计研究院有限公司 | Telescopic dirt blocking device on water |
| CN111236134A (en) * | 2019-10-18 | 2020-06-05 | 杨志光 | Movable spillway fish blocking gate |
| CN111926783A (en) * | 2020-07-07 | 2020-11-13 | 中南林业科技大学 | Floating type sewage blocking and discharging device for hydropower station |
| CN112267441A (en) * | 2020-09-27 | 2021-01-26 | 翁赛华 | Filter wall used in river channel |
| CN112359793A (en) * | 2020-10-19 | 2021-02-12 | 杨玉庆 | Trash device for water conservancy and hydropower and using method thereof |
| CN112359793B (en) * | 2020-10-19 | 2022-02-01 | 杨玉庆 | Trash device for water conservancy and hydropower and using method thereof |
| CN112295833A (en) * | 2020-10-30 | 2021-02-02 | 扬州市飞龙气动液压设备有限公司 | Floating type trash landscape fountain |
| CN113638381A (en) * | 2021-08-03 | 2021-11-12 | 宁波工程学院 | Hydraulic engineering river channel trash blocking device and installation method thereof |
| CN113638381B (en) * | 2021-08-03 | 2023-03-14 | 宁波工程学院 | Hydraulic engineering river channel trash blocking device and installation method thereof |
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Application publication date: 20160330 |
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