CN211200308U - Energy storage power station is with regulation and control flashboard controlling means - Google Patents
Energy storage power station is with regulation and control flashboard controlling means Download PDFInfo
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- CN211200308U CN211200308U CN201922125371.3U CN201922125371U CN211200308U CN 211200308 U CN211200308 U CN 211200308U CN 201922125371 U CN201922125371 U CN 201922125371U CN 211200308 U CN211200308 U CN 211200308U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000001914 filtration Methods 0.000 claims description 25
- 230000001105 regulatory effect Effects 0.000 claims 6
- 230000001276 controlling effect Effects 0.000 claims 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000003860 storage Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides an energy storage power plant is with regulation and control flashboard controlling means, including the flashboard frame, sliding connection has the flashboard on the flashboard frame, and flashboard frame top is provided with hoist mechanism, and the flashboard frame still sliding connection has the filter, and the filter face is provided with the mesh, and the filter is located the direction of intaking than the flashboard, and the filter is a plurality of screw rods with the equal fixedly connected with in top of flashboard, and the screw rod all goes up and down through hoist mechanism, and flashboard frame top still is provided with controls the mechanism. The utility model has the advantages that: reasonable in design, simple structure, safe and reliable has the function of intercepting debris.
Description
Technical Field
The utility model relates to a pumped storage power station equipment technical field especially relates to an energy storage power station is with regulation and control flashboard controlling means.
Background
With the rapid development of national economy, the scale of a power grid is larger and larger, the role and the position of a pumped storage power station in the power grid become more and more obvious day by day, the gradual transition from the early peak load regulation and valley filling to the improvement of the power quality to an indispensable management tool of a power system is realized, and the high attention of a hydropower construction department and an operation management organization is obtained. The pumped storage power station is a special power station with quick starting, quick load tracking and quick response.
The pumped storage power station is generated for solving the contradiction between supply and demand between the peak and the valley of the power grid, and is a way for indirectly storing electric energy. The water pump is driven by the surplus electric power in the next night, water is pumped from the lower reservoir to the upper reservoir to be stored, and then the water is discharged to generate power in the day and the first night of the next day and flows into the lower reservoir. In the whole operation process, although partial energy can be lost in the conversion process, the pumped storage power station is cheaper and more beneficial than the situation that the coal-electricity power generation equipment is additionally built to meet the requirement of high-peak power utilization, and the load is pressed and the machine is stopped in the low-valley time. Besides, the pumped storage power station can also take on dynamic functions of frequency modulation, phase modulation, emergency standby and the like. Therefore, the pumped storage power station is not only a power supply point, but also a power consumer; the method becomes an important tool for power grid operation management, and is a pillar for ensuring safe, economic and stable production of the power grid. The pumped storage power station has two main operation modes of power generation and pumping, and multiple operations of switching from one working condition to another working condition exist between the two operation modes.
The pumped storage power station mainly comprises the following components: the system comprises an upper reservoir, a water delivery system, a plant, a switch station, an outgoing line field and a lower reservoir. And in the hydraulic system of energy storage power station, be provided with a plurality of water sluicegates on the water route usually for the water level in each water route of control, this kind of water sluicegate utilizes manpower to come direct pulling usually, and workman's intensity of labour is great, and current water sluicegate's height can't be adjusted, can only open totally or the full cut-off, and the control range is very limited. In addition, the existing gate plate does not have the function of garbage interception, because the reservoir is in a natural environment, sundries such as branches, leaves, garbage and the like can often float in the reservoir, and if a filter device is not arranged at the gate, the sundries can block a water pump or a pipeline, and unnecessary loss is caused to a water supply power station.
How to solve the above technical problems is the subject faced by the present invention.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a reasonable in design, simple structure, safe and reliable's energy storage power station with interception debris function is with regulation and control flashboard controlling means.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a regulation and control flashboard control device for energy storage power station, including the flashboard frame, the flashboard is connected with in the flashboard frame in a sliding manner, the flashboard frame top is provided with hoist mechanism, the flashboard frame still is connected with the filter in a sliding manner, the filter face is provided with the mesh, the filter is located the water inlet direction than the flashboard, the filter with the top of flashboard all fixedly connected with a plurality of screw rods, the screw rod all passes through hoist mechanism lift;
and the top of the flashboard frame is also provided with an operating mechanism.
Two rows of grooves are arranged in parallel on the inner side of the flashboard frame, and the grooves are respectively connected with the flashboards and the filter plates in a sliding manner;
the top of the gate plate frame is provided with a plurality of through holes, and each screw rod penetrates through the through holes.
The lifting mechanism comprises worm gears, the worm gears are arranged on the top of each through hole, namely the top surface of the flashboard frame, the worm gears are rotatably connected to the top surface of the flashboard frame, a central rotating shaft of each worm gear is coaxial with the through hole, a threaded hole coaxial with the through hole is formed in each worm gear, and each screw rod is in threaded connection with the corresponding threaded hole of the worm gear;
every the equal vertical setting of screw rod and top all are provided with the stopper.
The top end of the flashboard frame is provided with two worms, the two worms are respectively meshed with the flashboards and the worm wheels corresponding to the filter plate screw rods, the worms meshed with the worm wheels corresponding to the flashboard screw rods are flashboard worms, and the worms meshed with the worm wheels corresponding to the filter plate screw rods are filter plate worms;
the same ends of the two worms are both connected with gears, and the gears are driven by the control mechanism.
The control mechanism comprises a fixed frame arranged at the top of the flashboard frame, the fixed frame is positioned at a gear at the end part of the worm, a horizontal gear shaft is rotatably connected onto the fixed frame, a main gear is coaxially and slidably connected onto the gear shaft, the end part of the gear shaft penetrates through the fixed frame body and is connected with a driving motor, and the driving motor controls the rotation direction through a switch;
the gear connected with the end part of the flashboard worm is a flashboard gear, the gear connected with the end part of the filtering board worm is a filtering board gear, the level height of the flashboard gear is the same as that of the filtering board gear, and the flashboard gear is closer to the driving motor than the filtering board gear;
the top of the fixing frame is provided with a sliding chute, a control piece is connected onto the sliding chute in a sliding mode, the bottom of the control piece is provided with a clamp, the inner side of the clamp is attached to the two sides of the main gear, the top end of the control piece is provided with a handle, the handle is located at the top of the fixing frame, and the clamp is located at the bottom of the fixing frame;
the chute is provided with three slots, when the control piece is positioned at the slot close to the driving motor, the main gear is meshed with the flashboard gear, when the control piece is positioned at the slot far away from the driving motor, the main gear is meshed with the filtering gear, and when the control piece is positioned at the middle slot, the main gear is simultaneously meshed with the flashboard gear and the filtering plate gear.
The filter plate comprises a filter main plate, the filter main plate and the flashboard are the same in size and are arranged in parallel, and two sides of the filter main plate are connected to the grooves in a sliding mode;
the filtering main board is fixedly provided with a bottom board close to the water inlet direction, the bottom board is positioned on the bottom surface of the filtering main board in the water inlet direction, and the bottom board is perpendicular to the filtering main board;
the filtering main plate is fixedly provided with two side plates close to the water inlet direction, the side plates are arranged on two sides of the filtering main plate and are vertically connected with one end of the bottom plate, and the outer sides of the two side plates are attached to the inner side of the flashboard frame;
a plurality of meshes are uniformly distributed on the filtering main plate, the bottom plate and the side plates.
The utility model discloses during the in-service use: when the flashboard needs to be closed, the flashboard and the filter plate can be put down together, the control piece is moved to a middle groove position through the handle, then the driving motor is opened, the motor drives the main gear to rotate and drives the flashboard gear and the filter plate gear to rotate simultaneously, the two gears rotate in the same direction, in the rotating process, the flashboard worm and the filter plate worm rotate and drive the worm gear to rotate simultaneously in the same direction, so that the screw rod moves downwards, the filter plate and the flashboard are driven to descend simultaneously, when the flashboard descends to the bottom, the motor can be closed, when the flashboard needs to be opened, the flashboard can be lifted independently, the control piece is moved to the groove position close to the driving motor, then the driving motor drives the gear shaft to rotate reversely through the switch, at the moment, the main gear is only meshed with the flashboard gear, the flashboard can be driven, meanwhile, the garbage can be intercepted, and when the water flow is overlarge or water needs to be quickly supplied, the control piece can be moved to the middle groove position to enable the flashboard and the filter plate to rise simultaneously; when the valve is closed but impurities need to be cleaned, the control piece can be moved to a slot position far away from the driving motor, the driving motor is opened, and at the moment, the main gear is meshed, so that the filter plate can be driven to ascend independently for cleaning.
The utility model has the advantages that: the device is provided with the lifting mechanism and the control mechanism, and an operator only needs to control the filter plate and the gate plate to simultaneously lift or independently lift through the control piece and the switch, so that the device is simple, convenient and effective to operate, can realize multiple functions, such as closing the gate and collecting garbage in water, opening the valve and intercepting and filtering the garbage, and realizing large water flow or needing to quickly pass water, and simultaneously opening the valve and the filter plate and closing the valve to clean the garbage in the filter plate; one side of the water inlet direction of the filter plate is provided with a bottom plate and a side plate, so that the intercepted garbage can be lifted together after the filter plate rises, and the garbage can be cleaned conveniently by operators.
Drawings
Fig. 1 is a front view of the shutter and the filter plate of the present invention fully closed.
Fig. 2 is a partially enlarged view of the area a of fig. 1.
Fig. 3 is a schematic view of the closed three-dimensional structure of the shutter and the filter plate of the present invention.
Fig. 4 is a schematic view of the three-dimensional structure of the filter plate lifting and shutter closing according to the present invention.
Fig. 5 is a schematic view of the shutter lifting and closing structure of the filter plate according to the present invention.
Fig. 6 is a partially enlarged view of the area B of fig. 5.
Fig. 7 is a schematic view of the structure of the present invention with the shutter and the filter plate fully opened.
Wherein the reference numerals are: 1. a gate plate frame; 101. a groove; 102. a worm gear; 2. A shutter plate; 3. a lifting mechanism; 301. a ram worm; 302. a filter plate worm; 4. a filter plate; 401. mesh openings; 402. filtering the main board; 403. a base plate; 404. a side plate; 5. a screw; 6. an operating mechanism; 601. a fixed mount; 6011. a chute; 602. a gear shaft; 603. a main gear; 604. a drive motor; 605. a shutter gear; 606. a filter plate gear; 607. a control member; 6071. a clamp; 6072. a handle.
Detailed Description
Technical characteristics of the scheme can be clearly explained, and the scheme is explained through a specific implementation mode.
Referring to fig. 1 to 7, this embodiment is a regulation and control flashboard controlling means for energy storage power station, including flashboard frame 1, sliding connection has flashboard 2 on flashboard frame 1, and flashboard frame 1 still sliding connection has filter 4, and 4 faces of filter are provided with mesh 401, and filter 4 is located the direction of intaking than flashboard 2, and flashboard frame 1 inboard platoon is provided with two rows of recesses 101, sets up sliding connection flashboard 2 and filter 4 in the recess 101 respectively.
The filter 4 is including filtering mainboard 402, filter mainboard 402 and the same and parallel arrangement of 2 size of flashboard, the both sides sliding connection of filtering mainboard 402 in recess 101, it is close to the fixed bottom plate 403 that is provided with of direction of intaking to filter mainboard 402, bottom plate 403 is located the bottom surface of filtering mainboard 402 direction of intaking, and bottom plate 403 and the perpendicular setting of filtering mainboard 402, it is close to the fixed two curb plates 404 that are provided with of direction of intaking to filter mainboard 402, curb plate 404 sets up in the both sides of filtering mainboard 402 and all is connected perpendicularly with the one end of bottom plate 403, the outside of two curb plates 404 all pastes with flashboard frame 1 inboard mutually, filter mainboard 402, all evenly laid a plurality of meshs 401 on bottom plate 403 and the curb plate 404.
The top ends of the filter plate 4 and the flashboard 2 are fixedly connected with a plurality of screw rods 5, the screw rods 5 are lifted through a lifting mechanism 3, a plurality of through holes are arranged at the top of the flashboard frame 1, each screw rod 5 penetrates through the through hole, the lifting mechanism 3 is arranged at the top end of the flashboard frame 1, the lifting mechanism 3 comprises a worm wheel 102, the top part of each through hole, namely the top surface of the flashboard frame 1 is provided with the worm wheel 102, the worm wheel 102 is rotatably connected to the top surface of the flashboard frame 1, the central rotating shaft of each worm wheel 102 is coaxial with the through hole, a threaded hole which is coaxial with the through hole is arranged in each worm wheel 102, each screw rod 5 is in threaded connection with the corresponding threaded hole of the worm wheel 102, each screw rod 5 is vertically arranged, the top end of each screw rod 5 is provided with a limiting block, the top end of the flashboard frame 1 is, the worm meshed with the worm wheel 102 corresponding to the screw 5 of the filter plate 4 is a filter plate worm 302, the same ends of the two worms are both connected with gears, and the gears are driven by the control mechanism 6.
The control mechanism 6 comprises a fixed frame 601 arranged at the top of the flashboard frame 1, the fixed frame 601 is arranged at a gear at the end part of a worm, a horizontal gear shaft 602 is rotatably connected to the fixed frame 601, a main gear 603 is coaxially and slidably connected to the gear shaft 602, the end part of the gear shaft 602 penetrates through the frame body of the fixed frame 601 and is connected with a driving motor 604, the rotating direction of the driving motor 604 is controlled by a switch, the gear connected to the end part of the flashboard worm 301 is a flashboard gear 605, the gear connected to the end part of the filter board worm 302 is a filter board gear 606, the level height of the flashboard gear 605 is the same as that of the filter board gear 606, the flashboard gear 605 is closer to the driving motor 604 than that of the filter board gear 606, a sliding chute 6011 is arranged at the top of the fixed frame 601, a control member 607 is, the handle 6072 is positioned at the top of the fixed frame 601, the clamp 6071 is positioned at the bottom of the fixed frame 601, the sliding chute 6011 is provided with three slots, when the control member 607 is positioned at a slot close to the driving motor 604, the main gear 603 is meshed with the shutter gear 605, when the control member 607 is positioned at a slot far from the driving motor 604, the main gear 603 is meshed with the filter gear 606, and when the control member 607 is positioned at a middle slot, the main gear 603 is meshed with the shutter gear 605 and the filter plate gear 606 simultaneously.
The utility model discloses during the in-service use: when the gate 2 needs to be closed, the gate 2 and the filter plate 4 can be put down together, as shown in fig. 1 to 3, firstly the control piece 607 is moved to the middle slot position by the handle 6072, then the driving motor 604 is turned on, the motor drives the main gear 603 to rotate and drives the gate gear 605 and the filter plate gear 606 to rotate simultaneously, the two gears rotate simultaneously in the same direction, during the rotation, the gate worm 301 and the filter plate worm 302 rotate and drive the worm wheel 102 to rotate simultaneously in the same direction, so that the screw 5 moves downwards and drives the filter plate 4 and the gate 2 to descend simultaneously, when the gate descends to the bottom, the motor can be turned off, when the gate needs to be opened, the gate 2 can be lifted up separately, as shown in fig. 5 to 6, firstly the control piece 607 is moved to the slot position close to the driving motor 604, then the driving gear shaft 602 of the driving motor is turned reversely by the switch, at this, since the main gear 603 is only engaged with the shutter gear 605, the shutter 2 can be driven to ascend, the filter plate 4 can pass through the mesh 401, and can intercept garbage, when the water flow is too large or needs to be rapidly communicated, the control member 607 can be moved to the middle slot position to ascend the shutter 2 and the filter plate 4 at the same time, as shown in fig. 7; when the valve is closed but cleaning is required, as shown in fig. 4, the control member 607 is moved to a position away from the driving motor 604 and the driving motor 604 is turned on, and the main gear 6030 is engaged with the filter plate gear 606 only, so that the filter plates 4 can be lifted up individually for cleaning.
The technical features that the utility model has not been described can be realized through or adopt prior art, and no longer give unnecessary details here, and of course, the above-mentioned explanation is not right the utility model discloses a restriction, the utility model discloses also not only be limited to the above-mentioned example, ordinary skilled person in this technical field is in the utility model discloses a change, modification, interpolation or replacement made in the essential scope also should belong to the utility model discloses a protection scope.
Claims (6)
1. A control device of a regulating flashboard for an energy storage power station comprises a flashboard frame (1), wherein a flashboard (2) is connected on the flashboard frame (1) in a sliding way, a lifting mechanism (3) is arranged at the top end of the flashboard frame (1), and the control device is characterized in that,
the gate plate frame (1) is further connected with a filter plate (4) in a sliding mode, meshes (401) are arranged on the surface of the filter plate (4), the filter plate (4) is located in the water inlet direction compared with the gate plate (2), a plurality of screw rods (5) are fixedly connected to the top ends of the filter plate (4) and the gate plate (2), and the screw rods (5) are lifted through the lifting mechanism (3);
the top of the flashboard frame (1) is also provided with an operation mechanism (6).
2. The regulating and controlling gate plate control device for the energy storage power station according to claim 1, characterized in that two rows of grooves (101) are arranged in parallel on the inner side of the gate plate frame (1), and the grooves (101) are respectively connected with the gate plate (2) and the filter plate (4) in a sliding manner;
the top of the flashboard frame (1) is provided with a plurality of through holes, and each screw rod (5) penetrates through the through holes.
3. The regulating gate plate control device for the energy storage power station as claimed in claim 2, characterized in that the lifting mechanism (3) comprises worm gears (102), the top of each through hole, namely the top surface of the gate plate frame (1), is provided with the worm gear (102), the worm gears (102) are rotatably connected to the top surface of the gate plate frame (1), the central rotating shaft of each worm gear (102) is coaxial with the through hole, a threaded hole coaxial with the through hole is arranged in each worm gear (102), and each screw rod (5) is in threaded connection with the corresponding threaded hole of the worm gear (102);
every screw rod (5) all vertical setting and top all are provided with the stopper.
4. The regulating gate plate control device for the energy storage power station according to claim 3, characterized in that two worms are arranged at the top end of the gate plate frame (1), the two worms are respectively meshed with the worm gears (102) corresponding to the gate plates (2) and the screw rods (5) of the filter plates (4), the worm meshed with the worm gears (102) corresponding to the screw rods (5) of the gate plates (2) is a gate plate worm (301), and the worm meshed with the worm gears (102) corresponding to the screw rods (5) of the filter plates (4) is a filter plate worm (302);
the same ends of the two worms are connected with gears, and the gears are driven by the control mechanism (6).
5. The regulating and controlling gate plate control device for the energy storage power station according to claim 4, characterized in that the control mechanism (6) comprises a fixed frame (601) arranged at the top of the gate plate frame (1), the fixed frame (601) is located at the gear at the end of the worm, a horizontal gear shaft (602) is rotatably connected to the fixed frame (601), a main gear (603) is coaxially and slidably connected to the gear shaft (602), the end of the gear shaft (602) penetrates through the fixed frame (601) frame body and is connected to a driving motor (604), and the driving motor (604) controls the rotation direction through a switch;
the gear connected with the end of the shutter worm (301) is a shutter gear (605), the gear connected with the end of the filter plate worm (302) is a filter plate gear (606), the level height of the shutter gear (605) is the same as that of the filter plate gear (606), and the shutter gear (605) is closer to the driving motor (604) than the filter plate gear (606);
a sliding groove (6011) is arranged at the top of the fixing frame (601), a control piece (607) is connected to the sliding groove (6011) in a sliding mode, a clamp (6071) is arranged at the bottom of the control piece (607), the inner side of the clamp (6071) is attached to two sides of the main gear (603), a handle (6072) is arranged at the top end of the control piece (607), the handle (6072) is located at the top of the fixing frame (601), and the clamp (6071) is located at the bottom of the fixing frame (601);
the sliding chute (6011) is provided with three slots, when the control piece (607) is located at a slot close to the driving motor (604), the main gear (603) is meshed with the shutter gear (605), when the control piece (607) is located at a slot far away from the driving motor (604), the main gear (603) is meshed with the filter plate gear (606), and when the control piece (607) is located at an intermediate slot, the main gear (603) is simultaneously meshed with the shutter gear (605) and the filter plate gear (606).
6. The regulating gate plate control device for energy storage power stations according to claim 2, characterized in that the filter plate (4) comprises a filter main plate (402), the filter main plate (402) and the gate plate (2) are the same in size and are arranged in parallel, and two sides of the filter main plate (402) are connected with the groove (101) in a sliding manner;
a bottom plate (403) is fixedly arranged on the filtering main plate (402) close to the water inlet direction, the bottom plate (403) is positioned on the bottom surface of the filtering main plate (402) in the water inlet direction, and the bottom plate (403) is perpendicular to the filtering main plate (402);
two side plates (404) are fixedly arranged on the filtering main plate (402) close to the water inlet direction, the side plates (404) are arranged on two sides of the filtering main plate (402) and are vertically connected with one end of the bottom plate (403), and the outer sides of the two side plates (404) are attached to the inner side of the gate plate frame (1);
a plurality of meshes (401) are uniformly distributed on the filtering main plate (402), the bottom plate (403) and the side plate (404).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922125371.3U CN211200308U (en) | 2019-12-02 | 2019-12-02 | Energy storage power station is with regulation and control flashboard controlling means |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922125371.3U CN211200308U (en) | 2019-12-02 | 2019-12-02 | Energy storage power station is with regulation and control flashboard controlling means |
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| CN211200308U true CN211200308U (en) | 2020-08-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012173A (en) * | 2020-08-18 | 2020-12-01 | 新昌县七星街道博创机械厂 | Sluice rubbish interception is from cleaning device for hydraulic engineering |
| CN112813997A (en) * | 2021-01-05 | 2021-05-18 | 北京萨尔科技有限公司 | Waterproof drainage device of hydraulic engineering construction |
| CN113697977A (en) * | 2021-08-14 | 2021-11-26 | 南京南化建设有限公司 | Effluent monitoring pool for comprehensive treatment of chlorobenzene wastewater |
| CN114875860A (en) * | 2022-04-02 | 2022-08-09 | 开封黄河工程开发有限公司 | Dam dirt cleaning system for water conservancy field |
| CN115262493A (en) * | 2022-07-03 | 2022-11-01 | 河南黄河河务局新乡黄河河务局 | Prevention of seepage stagnant water structure among hydraulic and hydroelectric engineering |
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2019
- 2019-12-02 CN CN201922125371.3U patent/CN211200308U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012173A (en) * | 2020-08-18 | 2020-12-01 | 新昌县七星街道博创机械厂 | Sluice rubbish interception is from cleaning device for hydraulic engineering |
| CN112012173B (en) * | 2020-08-18 | 2021-05-28 | 广西同扬建设工程有限公司 | Sluice rubbish interception is from cleaning device for hydraulic engineering |
| CN112813997A (en) * | 2021-01-05 | 2021-05-18 | 北京萨尔科技有限公司 | Waterproof drainage device of hydraulic engineering construction |
| CN113697977A (en) * | 2021-08-14 | 2021-11-26 | 南京南化建设有限公司 | Effluent monitoring pool for comprehensive treatment of chlorobenzene wastewater |
| CN114875860A (en) * | 2022-04-02 | 2022-08-09 | 开封黄河工程开发有限公司 | Dam dirt cleaning system for water conservancy field |
| CN115262493A (en) * | 2022-07-03 | 2022-11-01 | 河南黄河河务局新乡黄河河务局 | Prevention of seepage stagnant water structure among hydraulic and hydroelectric engineering |
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