CN107724342B - A kind of bifurcation pivot - Google Patents
A kind of bifurcation pivot Download PDFInfo
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- CN107724342B CN107724342B CN201711042934.1A CN201711042934A CN107724342B CN 107724342 B CN107724342 B CN 107724342B CN 201711042934 A CN201711042934 A CN 201711042934A CN 107724342 B CN107724342 B CN 107724342B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/16—Fixed weirs; Superstructures or flash-boards therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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- Mechanical Engineering (AREA)
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Abstract
The invention discloses a kind of bifurcation pivots, including non-pressure tunnel, diffuser and the forebay Fen Shui section, in which: one end of the non-pressure tunnel is delivered to diffuser after reservoir water intaking, and diffuser one end connects the tunnel outlet of non-pressure tunnel, and one end connects the forebay Fen Shui section；The forebay the Fen Shui section includes diversion dam, for dividing water；The forebay Fen Shui section further includes side weir, bleeder, forebay and the forebay Fen Shui；Diversion dam is U-shaped diversion dam, and including left side straight flange and right side straight flange that circular arc bottom edge is connected respectively with both side ends therewith, the outer convex direction on the circular arc bottom edge is towards diffuser；The downstream of forebay is arranged in parallel that first row disappears whirlpool pier and second row disappears whirlpool pier, and three and four are respectively set.Automatic balance type bifurcation pivot of the invention, water needed for different target unit capable of being distributed automatically, and ensure that water flow stationary enters pipeline, while vortex and filter water source can be eliminated.
Description
It is on April 18th, 2016 that the application, which is application No. is " 201610240239.5 ", the applying date, entitled " oneself
The divisional application of the application for a patent for invention of dynamic balance type bifurcation pivot ".
Technical field
The present invention relates to a kind of automatic balance type bifurcation pivots, belong to water conservancy projects.
Background technique
At present the country divide water building broad form be in river using check gate gates of segmental shape carry out flow control with
It carrying out controlling water flow using equipment such as flowmeter and flow regulating valves in water distribution plant, operating process is complicated, time and effort consuming, if
Standby investment is big, and maintenance and replacement cycle are short, influences water supply fraction.Pressure conduit is connected for non-pressure tunnel, main use is repaired
Forebay is built, when supplying water to multiple target units, often due to a target unit flow changes, while also being influenced in addition
The water supply of several targets, influencing each other between each water-diversion structure run complexity, and the adjustment time of systems stabilisation normal water supply is long.
The case where water diversion project supplies water to 3 or 3 or more targets at present is more and more, therefore using simple, reliable and economical
Divide water type formula, become the Main way of research.The water level balance Control Scheme being related to, water quality are supplied water certainly to multiple targets
The researchs such as whirlpool that disappear of dynamic filtering and forebay also more attract attention.
Summary of the invention
The object of the present invention is to provide a kind of automatic balance type bifurcation pivot, the mesh to supply water to three targets can be realized
's.
Purpose to realize the present invention, is achieved using following technical scheme:
A kind of bifurcation pivot, including non-pressure tunnel, diffuser and the forebay Fen Shui section, in which:
One end of the non-pressure tunnel is delivered to diffuser after reservoir water intaking, and diffuser one end connects non-pressure tunnel
Tunnel outlet, one end connect the forebay Fen Shui section；The forebay the Fen Shui section includes diversion dam, for dividing water；The forebay Fen Shui section is also wrapped
Include side weir, bleeder, forebay and the forebay Fen Shui；Diversion dam is U-shaped diversion dam, including circular arc bottom edge and both side ends therewith
The left side straight flange and right side straight flange being respectively connected with, the outer convex direction on the circular arc bottom edge is towards diffuser；
The downstream of forebay is arranged in parallel that first row disappears whirlpool pier and second row disappears whirlpool pier, and three and four are respectively set；
The first row whirlpool pier that disappears is located at second row and disappears the upstream of whirlpool pier；
Three first rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and this disappear whirlpool pier in face of the face of water flow be cylinder
Face is plane back to the face of water flow, first row disappear two whirlpool weirs Dun YuUXing that disappear at left and right sides of the pier of whirlpool left and right straight flange respectively between
It is arranged every preset distance；
Four second rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and intermediate two second rows disappear whirlpool pier in face of water
The face of stream is plane, and back to the face cylindrical surface of water flow, two second rows of left and right sides whirlpool pier that disappears is close to the left and right on U-shaped weir respectively
The setting of side straight flange.
The bifurcation pivot, preferred:
The disappear setting position of whirlpool pier of three first rows is respectively toward to three water outlets that four second rows disappear between the pier of whirlpool.
The bifurcation pivot, preferred:
The disappear second row of whirlpool pier and its two sides of each first row disappears and is connected with strainer between the pier of whirlpool.
The bifurcation pivot, preferred: the strainer is rotary sieve.
The bifurcation pivot, preferred: the bifurcation pivot further includes water level self-balancing device, which is included in point
The water level sensor that is arranged in the section of water forebay, in the energy dissipating power station of the forebay Fen Shui section downstream setting, be provided in the energy dissipating power station
The hydraulic turbine, controller；Wherein
Water level sensor is used to detect the water level of the forebay Fen Shui section, and the water level signal is reached to the control in energy dissipating power station in real time
Device processed, controller are used for the aperture of the water level signal control guide vanes of water turbine according to the forebay the Fen Shui section received.
The bifurcation pivot, preferred:
Controller judges that the water level of the forebay Fen Shui section is higher than the first predetermined threshold, then controls the hydraulic turbine according to the height of water level
Guide vane increases aperture；When controller judges that the water level of the forebay Fen Shui section is lower than the second predetermined threshold, then according to the height of water level, control
Guide vanes of water turbine processed reduces aperture；When controller judge the forebay Fen Shui section water level the first predetermined threshold and the second predetermined threshold it
Between, then controller maintains guide vanes of water turbine aperture constant.
A kind of automatic balance type bifurcation pivot, including non-pressure tunnel, diffuser and the forebay Fen Shui section, in which:
One end of the non-pressure tunnel is delivered to diffuser after reservoir water intaking, and diffuser one end connects non-pressure tunnel
Tunnel outlet, one end connect the forebay Fen Shui section；
The forebay the Fen Shui section includes diversion dam, for dividing water.
The automatic balance type bifurcation pivot, preferred:
The forebay Fen Shui section further includes side weir, bleeder, forebay and the forebay Fen Shui；
Diversion dam is U-shaped diversion dam, the left side straight flange being connected respectively including circular arc bottom edge and both side ends therewith and right side
Straight flange, the outer convex direction on the circular arc bottom edge is towards diffuser.
The automatic balance type bifurcation pivot, preferred:
Region on the left of U-shaped weir between straight flange and left bank constitutes bleeder；
Region between U-shaped weir circular arc bottom edge and left side straight flange and right side straight flange constitutes forebay；
Region on the right side of U-shaped weir between straight flange and side weir parallel-segment constitutes the forebay Fen Shui.
The automatic balance type bifurcation pivot, preferred:
Side weir includes two parts, and a part is tilting section, and one end is connect with tunnel outlet right side, and along the water (flow) direction right side
Side is obliquely installed, and constitutes the right side bevel edge of diffuser, and another part is parallel-segment, is arranged with straight flange parallel interval on the right side of U-shaped weir,
And connect with side weir tilting section, the other end is connect with side weir parallel-segment；
Region on the right side of side weir parallel-segment and U-shaped weir between straight flange forms the forebay Fen Shui, the region between side weir and right bank
Form the drain tank of automatic balance type bifurcation pivot.
The automatic balance type bifurcation pivot, preferred: the automatic balance type bifurcation pivot further includes the dark culvert that sluices, institute
Drain tank is stated to be connected with the dark culvert that sluices.
The automatic balance type bifurcation pivot, preferred:
Left bank includes two parts, and a part is tilting section, exports from tunnel to water (flow) direction left side and is arranged, and constitutes and expands
The left side bevel edge of section is dissipated, another part of left bank is horizontal segment, it is connected with tilting section, straight flange on the left of left bank horizontal segment and U-shaped weir
Parallel interval setting, the region between left bank horizontal segment and U-shaped weir left side straight flange form bleeder, the tilting section and side weir of left bank
Tilting section between region constitute diffuser；
Right bank includes two parts, and a part is tilting section, is spaced a predetermined distance since tunnel outlet with side weir tilting section
It is obliquely installed on the right side of water (flow) direction afterwards, right bank another part is horizontal segment, is connect with tilting section, and the horizontal segment and U-shaped weir are right
Side straight flange is arranged in parallel, and region between the two forms the forebay Fen Shui.
The automatic balance type bifurcation pivot, preferred:
The downstream of forebay is arranged in parallel that first row disappears whirlpool pier and second row disappears whirlpool pier, and three and four are respectively set；
The first row whirlpool pier that disappears is located at second row and disappears the upstream of whirlpool pier；
Three first rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and this disappear whirlpool pier in face of the face of water flow be cylinder
Face is plane back to the face of water flow, first row disappear two whirlpool weirs Dun YuUXing that disappear at left and right sides of the pier of whirlpool left and right straight flange respectively between
It is arranged every preset distance；
Four second rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and intermediate two second rows disappear whirlpool pier in face of water
The face of stream is plane, and back to the face cylindrical surface of water flow, two second rows of left and right sides whirlpool pier that disappears is close to the left and right on U-shaped weir respectively
The setting of side straight flange.
The automatic balance type bifurcation pivot, preferred:
The disappear setting position of whirlpool pier of three first rows is respectively toward to three water outlets that four second rows disappear between the pier of whirlpool.
The automatic balance type bifurcation pivot, preferred:
The disappear second row of whirlpool pier and its two sides of each first row disappears and is connected with strainer between the pier of whirlpool.
The automatic balance type bifurcation pivot, preferred:
The strainer is rotary sieve.
The automatic balance type bifurcation pivot, preferred:
The bifurcation pivot further includes water level self-balancing device, which includes that the water level being arranged in the section of the forebay Fen Shui passes
Sensor is provided with the hydraulic turbine, controller in the energy dissipating power station of the forebay Fen Shui section downstream setting, the energy dissipating power station；Wherein
Water level sensor is used to detect the water level of the forebay Fen Shui section, and the water level signal is reached to the control in energy dissipating power station in real time
Device processed, controller are used for the aperture of the water level signal control guide vanes of water turbine according to the forebay the Fen Shui section received.
The automatic balance type bifurcation pivot, preferred:
Controller judges that the water level of the forebay Fen Shui section is higher than the first predetermined threshold, then controls the hydraulic turbine according to the height of water level
Guide vane increases aperture；When controller judges that the water level of the forebay Fen Shui section is lower than the second predetermined threshold, then according to the height of water level, control
Guide vanes of water turbine processed reduces aperture；When controller judge the forebay Fen Shui section water level the first predetermined threshold and the second predetermined threshold it
Between, then controller maintains guide vanes of water turbine aperture constant.
Compared with prior art, automatic balance type bifurcation pivot of the invention, can autobalance water level, optimize a point water
The form of diversion dam in forebay, water needed for different target unit capable of being distributed automatically, and ensure to enable water flow steadily into
Enter pipeline, plus the whirlpool pier that disappears in forebay, solves forebay eddy current problem；By adding strainer, filtering is realized
Impurity, purpose of purifying the water quality；Under the conditions of different operating conditions, water surface curve is steady in automatic balance type bifurcation pivot, wave
High level mean square deviation is small, and whole flow velocity is smaller, and flow-shape is good；Diffuser is generated without apparent disorder fluidised form；U-shaped diversion dam makes
It obtains water flow and almost symmetrically flows into the forebay Fen Shui, improve into pond flow-shape.
Detailed description of the invention
Fig. 1 is the overall structure diagram of automatic balance type bifurcation pivot of the present invention；
Fig. 2 is water level self-balancing device schematic diagram of the present invention.
Specific embodiment
Automatic balance type bifurcation pivot as shown in Figure 1, including non-pressure tunnel 1, diffuser 2, the forebay Fen Shui section 3, described point
Water forebay section includes U-shaped diversion dam 31.Arrow in attached drawing schematically shows the direction of water flow.
After reservoir water intaking, 1 tunnel body delivery of non-pressure tunnel to the automatic balance type of process divides for one end of non-pressure tunnel 1
Water hinge diffuser 2, wherein diffuser 2 one terminates the tunnel outlet of non-pressure tunnel, the termination forebay a Fen Shui section 3.Diffuser 2 by
Tunnel outlet fades to the forebay Fen Shui section 3 gradually broadeningly.
The forebay Fen Shui section 3 includes diversion dam 31, side weir 4, bleeder 8, forebay 32, the forebay Fen Shui 9.Diversion dam 31
Position is located at the outermost water outlet side of diffuser 2, due to needing to divide water respectively to bleeder 8, forebay 32 and the forebay Fen Shui 9,
Therefore diversion dam 31 be designed as U-shaped diversion dam, the U-shaped diversion dam be it is generally u-shaped, be included in diffuser 2 export outermost setting
Circular arc bottom edge and the left side straight flange extended horizontally outward along water (flow) direction being respectively connected with the circular arc bottom edge two sides and right side
Straight flange, the outer convex direction on the circular arc bottom edge is towards diffuser 2.
U-shaped 31 circular arc bottom edge of diversion dam arranges that the interval region between left side straight flange and left bank 6 is constituted towards diffuser 2
Bleeder 8,8 outflow side of bleeder are arranged first pipe 35, flow into the first pipe 35 by the water flow that bleeder 8 is flowed out, to the
One target area (such as the first tributary) water delivery；The part water flow that diffuser 2 flows out straight flange on the right side of U-shaped weir flows to the forebay Fen Shui 9,
The 5th pipeline 39 is arranged in 9 outflow side of the forebay Fen Shui, the 5th pipeline 39 is flowed by the water flow that the forebay Fen Shui 9 is flowed out, to third mesh
Mark region (such as third tributary) water delivery；Region between U-shaped diversion dam circular arc bottom edge and left side straight flange and right side straight flange constitute into
Water forebay 32, the water flow that forebay 32 flows out flows into multiple pipelines, to the second target area (such as the second tributary) water delivery.By
This, the water flow flowed out from diffuser is divided into three parts by U-shaped weir: bleeder 8, forebay 32, the forebay Fen Shui 9.
Side weir 4 is used for overflow, including two parts, and a part is tilting section, constitutes the right side bevel edge of diffuser 2, one end
It is connect with the outlet of tunnel 1 right side, i.e., exports from tunnel and be obliquely installed to the right along water (flow) direction, another part is parallel-segment, with U
Straight flange is parallel on the right side of type weir and setting spaced apart, tilting section one end are connect with the outlet of non-pressure tunnel 1 right side, the other end and
Parallel-segment connection, the region formation forebay Fen Shui 9 between 4 parallel-segment of side weir and U-shaped weir right side straight flange, 4 entirety of side weir (including incline
Oblique section and parallel-segment) with the region between right bank 7 drain tank 5 is set, drain tank 5 is connected with the secretly culvert that sluices.
Left bank 6 includes two parts, and a part is tilting section, and one end is connect with the outlet of tunnel 1 left side, i.e., exports edge from tunnel
Water (flow) direction is obliquely installed to the left, constitutes the left side bevel edge of diffuser 2, and one section is horizontal segment, is connect with the tilting section other end,
And setting parallel and spaced apart with U-shaped 31 left side straight flange of weir, between 31 left side straight flange of 6 horizontal segment of left bank and U-shaped weir
Region forms bleeder 8.Region between the tilting section of left bank 6 and the tilting section of side weir 4 constitutes diffuser 2.
Right bank 7 include two parts, a part be tilting section, since tunnel export start and the 4 pre- spacing in tilting section interval of side weir
It is obliquely installed to the right from rear along water (flow) direction, substantially parallel with 4 tilting section of side weir, 7 another part of right bank is horizontal segment, with
The connection of right bank horizontal segment, and be arranged with 4 parallel-segment parallel interval preset distance of side weir.
32 downstream of forebay is arranged in parallel that first row disappears whirlpool pier 33 and second row disappears whirlpool pier 34, and three and four are respectively set
It is a.First row, which disappears, to be spaced a predetermined distance between whirlpool pier 33, and is located at second row and is disappeared the upstream of whirlpool pier 34, and second row disappears whirlpool pier 34
Between be spaced a predetermined distance.Three first rows whirlpool pier 33 that disappears is vertical cylinder, and spacing is equal, and the whirlpool pier 33 that disappears is in face of water
The face of stream is cylindrical surface, back to the face of water flow be plane namely cross sectional shape be semicircle, and two at left and right sides of water flow
The left and right straight flange on a disappear whirlpool pier 33 and U-shaped weir 31 is respectively separated preset distance setting.Four second rows whirlpool pier 34 that disappears also is upright
Shape cylinder, spacing is equal, and two intermediate second rows whirlpool pier 34 that disappears in face of the face of water flow is plane, is circle back to the face of water flow
Cylinder namely cross sectional shape are semicircle, and are located at the whirlpool pier 34 that disappears of two second rows at left and right sides of water flow and are close to U-shaped weir respectively
31 left and right sides straight flange setting, namely is separately fixed on U-shaped weir left and right sides straight flange and is arranged, therefore flows through first row and disappear whirlpool pier
33 and second row disappear whirlpool pier 34 water flow formed four into three go out form namely first row disappear between whirlpool pier 33, two straight flange of U-shaped weir
Constitute four water inlets, and second row disappears and constitutes three water outlets between whirlpool pier 34, three water outlet water outlet sides are respectively set the
Two pipelines 36, third pipeline 37, the 4th pipeline 38, for supplying water to the second target area (such as the second tributary).Three first rows
The disappear setting position of whirlpool pier 33 is respectively toward to three water outlets that four second rows disappear between whirlpool pier 34, and each first row disappears
Whirlpool pier 33 and the second row of its two sides, which disappear, is all connected with strainer 10, preferably rotary sieve between whirlpool pier 34, is used for
Impurity in drainage stream, such as branch, dead fish, to purify water.Disappeared the setting of whirlpool pier by two rows as above, a point water can be eliminated
The water vortex of the especially forebay 32 of forebay section 3.
Five pipeline of first pipe-the (35-39) is respectively provided with gate 40 in flow inlet side, and for all closing, part is sealed
It closes, fully open each pipeline, to control the water for entering each pipeline.
31 weir body of diversion dam, 4 weir body of side weir, the whirlpool pier 33 that disappears, 34 pier bodies are concrete casting molding；Left bank 6, right bank 7
Concrete revetment is set.
As shown in Fig. 2, automatic balance type automatic balance type bifurcation pivot of the present invention further includes water level self-balancing device, it should
Device includes the energy dissipating power station (not shown in figure 1) in the setting of third tributary downstream, and the hydraulic turbine, control are provided in the energy dissipating power station
Device processed；It is provided with water level sensor, the water level of the detection forebay Fen Shui section 3 in the forebay Fen Shui section 3, and water level signal is reached in real time
The controller in energy dissipating power station, controller control guide vanes of water turbine aperture, with balance automatic balance type bifurcation pivot divide water before
The water level in pond.For example, after second pipe 36, third pipeline 37, the 4th pipeline 38 are closed by gate 40, the forebay Fen Shui section 3
Water level rises, and extra water flows to downstream by drain tank by side weir 4, and the setting of the side weir 4 also plays autobalance
The effect of the forebay Fen Shui 3 water levels of section.Water level sensor sends the water level signal of the forebay Fen Shui section 3 to controller, and controller is sentenced
The disconnected forebay Fen Shui section 3 water levels height controls water wheels according to height of water level if being higher than the first predetermined threshold (water level high threshold)
Machine guide vane increases aperture, to increase the water flow for flowing through third tributary, the water level of the forebay Fen Shui is reduced, when point that controller receives
The water level of water forebay section 3 is lower than the second predetermined threshold (water level Low threshold), then according to height of water level, controls guide vanes of water turbine and reduce
Aperture, to increase the water level of the forebay Fen Shui, until the water level of the forebay water level Fen Shui section 3 is in the first predetermined threshold and the second predetermined threshold
Between value, then controller maintains guide vanes of water turbine aperture constant, to keep the water level in the forebay Fen Shui section 3.
Automatic balance type bifurcation pivot of the invention, water flow can steadily enter pipeline, and forebay can eliminate vortex,
And good purification；It is under the conditions of different operating conditions, automatic balance type bifurcation pivot of the invention, and interior water surface curve is flat
Surely, wave height value mean square deviation is small, and whole flow velocity is smaller, and flow-shape is good；Diffuser is generated without apparent disorder fluidised form；U-shaped point
Mill weir makes water flow almost symmetrically flow into the forebay Fen Shui, improves into pond flow-shape；It is capable of the water of real-time detection forebay
Position, and the water level of the forebay Fen Shui section is adjusted in real time, realize the autobalance of water level.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention
Think and range is defined.Without departing from the design concept of the invention, ordinary people in the field is to technology of the invention
The all variations and modifications that scheme is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
It is all described in the claims.
Claims (6)
1. a kind of automatic balance type bifurcation pivot, including non-pressure tunnel, diffuser and the forebay Fen Shui section, it is characterised in that:
One end of the non-pressure tunnel is delivered to diffuser after reservoir water intaking, and diffuser one end connects the tunnel of non-pressure tunnel
Outlet, one end connect the forebay Fen Shui section；The forebay the Fen Shui section includes diversion dam, for dividing water；The forebay Fen Shui section further includes side
Weir, bleeder, forebay and the forebay Fen Shui；Diversion dam be U-shaped diversion dam, including circular arc bottom edge and therewith both side ends difference
Connected left side straight flange and right side straight flange, the outer convex direction on the circular arc bottom edge is towards diffuser；
The downstream of forebay is arranged in parallel that first row disappears whirlpool pier and second row disappears whirlpool pier, and three and four are respectively set；It is described
The first row whirlpool pier that disappears is located at second row and disappears the upstream of whirlpool pier；
Three first rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and this disappear whirlpool pier in face of the face of water flow be cylindrical surface, back
Be plane to the face of water flow, first row disappear two whirlpool weirs Dun YuUXing that disappear at left and right sides of the pier of whirlpool left and right straight flange be respectively separated it is pre-
Set a distance setting；
Four second rows whirlpool pier that disappears is vertical cylinder, and spacing is equal, and intermediate two second rows disappear whirlpool pier in face of water flow
Face is plane, back to the face cylindrical surface of water flow, two second rows of the left and right sides disappear whirlpool pier be close to respectively U-shaped weir left and right sides it is straight
Side setting.
2. bifurcation pivot according to claim 1, it is characterised in that:
The disappear setting position of whirlpool pier of three first rows is respectively toward to three water outlets that four second rows disappear between the pier of whirlpool.
3. bifurcation pivot according to claim 1, it is characterised in that: each first row disappears the second of whirlpool pier and its two sides
It arranges and is all connected with strainer between the whirlpool pier that disappears.
4. bifurcation pivot according to claim 3, it is characterised in that: the strainer is rotary sieve.
5. bifurcation pivot according to claim 1, it is characterised in that: the bifurcation pivot further includes water level autobalance dress
It sets, which includes the water level sensor being arranged in the section of the forebay Fen Shui, in the energy dissipating power station of the forebay Fen Shui section downstream setting, should
The hydraulic turbine, controller are provided in energy dissipating power station；Wherein
Water level sensor is used to detect the water level of the forebay Fen Shui section, and the water level signal is reached to the control in energy dissipating power station in real time
Device, controller are used for the aperture of the water level signal control guide vanes of water turbine according to the forebay the Fen Shui section received.
6. bifurcation pivot according to claim 5, it is characterised in that: controller judges that the water level of the forebay Fen Shui section is higher than the
One predetermined threshold then controls guide vanes of water turbine according to the height of water level and increases aperture；When controller judges the water of the forebay Fen Shui section
Position is lower than the second predetermined threshold, then according to the height of water level, controls guide vanes of water turbine and reduce aperture；Before controller judgement divides water
Pond section water level is between the first predetermined threshold and the second predetermined threshold, then controller maintains guide vanes of water turbine aperture constant.
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| CN201711042934.1A CN107724342B (en) | 2016-04-18 | 2016-04-18 | A kind of bifurcation pivot |
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| CN201610240239.5A CN105735207B (en) | 2016-04-18 | 2016-04-18 | Automatic balance type bifurcation pivot |
| CN201711042934.1A CN107724342B (en) | 2016-04-18 | 2016-04-18 | A kind of bifurcation pivot |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105735207B (en) | 2017-11-28 |
| CN105735207A (en) | 2016-07-06 |
| CN107724342A (en) | 2018-02-23 |
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