CN208502937U - A kind of novel Francis Turbine with High Rated Head surge suppressor - Google Patents
A kind of novel Francis Turbine with High Rated Head surge suppressor Download PDFInfo
- Publication number
- CN208502937U CN208502937U CN201821013870.2U CN201821013870U CN208502937U CN 208502937 U CN208502937 U CN 208502937U CN 201821013870 U CN201821013870 U CN 201821013870U CN 208502937 U CN208502937 U CN 208502937U
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- CN
- China
- Prior art keywords
- top cover
- valve
- water inlet
- penstock
- surge suppressor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Hydraulic Turbines (AREA)
Abstract
The utility model relates to water generating equipment, especially a kind of novel Francis Turbine with High Rated Head surge suppressor.Solve the problems, such as negative sense thrust in the hydraulic turbine.Including valve, adapter tube and top cover water inlet pipe, top cover water inlet pipe level is linked into before hydraulic turbine main valve on penstock, symmetrical two top cover water inlet pipes on penstock, top cover water inlet pipe is located at the concora crush elbow interface on the outside of the hydraulic turbine equipped with 90 °, valve is linked on concora crush elbow interface, and valve other end is equipped with adapter tube.Effective to eliminate negative sense thrust problem in time, whole equipment structure is simple, and transformation is convenient, while in dry season, water quality is preferable, can also take out surplus cooling water of the leak as unit bearing, from water-turbine top cover epicoele so as to save the operating cost in power station.
Description
Technical field
The utility model relates to water generating equipment, especially a kind of novel Francis Turbine with High Rated Head surge suppressor.
Background technique
Francis turbine is compact-sized, and efficiency is higher, adapts to very wide head range, is that current countries in the world are extensive
One of hydraulic turbine pattern of use.When water flow passes through this hydraulic turbine active wheel, it is flowed out with radial entrance, axially, so
Also referred to as Francis turbine.
For mixed-flow high head hydraulic turbine, in traditional structure design, the usually not consideration hydraulic turbine is in practical fortune
During row, when the sealing wear at runner lower ring is more serious, as lower ring water leakage gradually increases, and hydraulic pressure is basic
It is close in spiral case, necessarily lead to one and hydraulic turbine axial hydraulic thrust at runner lower ring and tail water adapter tube at this time
Opposite power, and when this power is greater than hydraulic turbine axial hydraulic thrust, the low thrust disk in unit thrust bearing will be born by force
The temperature of big negative sense thrust, low thrust disk will be increased sharply, can damage the guide shoe alloy contacted with low thrust disk when serious
It is bad, to influence the normal operation of unit.
Leak-stopping mostly uses seal ring at present, and seal ring is arranged between francis turbine runner and top cover and base ring for subtracting
Small leak and replaceable sealing structure, the effect of seal ring are to reduce turbine volumetric loss, and protection runner crown, lower ring are exempted from
It is worn.There are many forms for hydraulic turbine seal ring, there is clearance-type, step, mazy, are located at sound cooperation, than
At runner crown and top cover cooperation, at runner lower ring and base ring cooperation.It can not avoid wearing well now, can only just design
One structure carrys out correct guidance leak, thus the opposite force for avoiding water flow from generating.
Summary of the invention
In order to overcome the disadvantages mentioned above of the prior art, by serious analysis, the utility model provides one kind in high water head machine
Special one special surge suppressor of design in group, to eliminate the negative sense thrust generated in operational process, while that be exactly
In dry season, water quality is preferable, and surplus cooling water of the leak as unit bearing can also be taken out from water-turbine top cover epicoele, so as to
To save the novel Francis Turbine with High Rated Head surge suppressor of the operating cost in power station.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of novel Francis Turbine with High Rated Head
Surge suppressor, including valve, adapter tube and top cover water inlet pipe, top cover water inlet pipe level are linked into penstock before hydraulic turbine main valve
On, symmetrical two top cover water inlet pipes on penstock, top cover water inlet pipe is located at the concora crush elbow on the outside of the hydraulic turbine equipped with 90 °
Interface, valve are linked on concora crush elbow interface, and valve other end is equipped with adapter tube.
The top cover water inlet pipe is extend at top cover.The timely discharge that can be preferably conducive to water flow is protruded into this way, simultaneously
Good effect can be played for removal negative pressures, avoid the problem that only seeping water cause pressure control less than.
The valve uses motor-driven valve, and top cover water inlet pipe is located at one end inside penstock and is equipped with pressure inductor, pressure
Power inductor is linked into motor-driven valve control.Whole equipment can realize automatic operating in this way, when pressure inductor incudes
To negative sense thrust setting value, feedback signal to motor-driven valve, then motor-driven valve controls flow again, to eliminate negative sense pressure well
Power.
Two top cover water inlet pipes be located at penstock positive northeast and positive southwestward, penstock bottom pair
Claim setting two drainage box water inlets, drainage box drainage interface with 15 ° -20 ° of vertical direction angle.Setting symmetrical in this way,
High head hydraulic turbine negative sense thrust, which is laid down, can be good at reaching effect.
The intake of the surge suppressor is designed before hydraulic turbine main valve on penstock.Main valve is every hydrogenerator
Have, is mounted on the junction of penstock and spiral case.Hydraulic turbine main valve is mounted between pressure pipeline and spiral case, and main valve is only
There is standard-sized sheet and closes two kinds of operating positions, the adjusting without hydroturbine water intake flow entirely.When negative sense thrust occurs in unit, open
Valve on surge suppressor, according to the actual conditions of unit, the inflow-rate of water turbine of suitable control surge suppressor, to reach elimination negative sense
Thrust；In addition, the surge suppressor also has other use, that is, in dry season, water quality is preferable, can also be from the hydraulic turbine
Top cover epicoele takes out surplus cooling water of the leak as unit bearing, so as to save the operating cost in power station.
The utility model has the following beneficial effects: optimizing the design of high head hydraulic turbine water distributor, one is increased
A surge suppressor solves the excessive adverse effect of high head hydraulic turbine negative sense thrust, it is ensured that power station can transport steadily in the long term, safely
Row, improves the overall economic efficiency in power station.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model.
Fig. 2 is that the hydraulic turbine of the utility model installs the partial sectional view of top cover water inlet tube portion.
Fig. 3 is the K of the utility model Fig. 2 to side view.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, 2, a kind of novel Francis Turbine with High Rated Head surge suppressor, including valve 1, adapter tube 2 and top cover
Water inlet pipe 3,3 level of top cover water inlet pipe are linked into before 4 main valve of the hydraulic turbine on penstock 5, symmetrical two on penstock 5
Top cover water inlet pipe 3, top cover water inlet pipe 3 are located at the concora crush elbow interface 6 on the outside of the hydraulic turbine 4 equipped with 90 °, and valve 1 is linked into concora crush
On elbow interface 6,1 other end of valve is equipped with adapter tube 2.
The top cover water inlet pipe 3 is extend at top cover 7, is located under the hydraulic turbine at ring 8.Protruding into so to be preferably conducive to
The timely discharge of water flow can play good effect simultaneously for removal negative pressures, and avoiding only seeping water leads to pressure control
System less than the problem of.
The intake of the surge suppressor is designed before 4 main valve of the hydraulic turbine on penstock 5.Main valve is every hydraulic generator
What machine had, it is mounted on the junction of penstock 5 Yu spiral case.4 main valve of the hydraulic turbine is mounted between pressure pipeline 5 and spiral case.
When negative sense thrust occurs in unit, the valve on surge suppressor is opened, according to the actual conditions of unit, suitable control
The inflow-rate of water turbine of surge suppressor eliminates negative sense thrust to reach；In addition, the surge suppressor also has other use, that is just
It is in dry season, water quality is preferable, surplus cooling water of the leak as unit bearing can also be taken out from water-turbine top cover epicoele, from
And the operating cost in power station can be saved.
Embodiment 2
Specific embodiment with embodiment 1, the difference is that: the valve 1 uses motor-driven valve, and top cover water inlet pipe 3
It is equipped with pressure inductor positioned at 4 inside one end of penstock, pressure inductor is linked into motor-driven valve control.Such whole equipment
Automatic operating can be realized, when pressure inductor senses that negative sense thrust setting value, feedback signal to motor-driven valve are then electric
Dynamic valve controls flow again, to timely and effectively eliminate negative pressures, improves the degree of automation of whole equipment.
As shown in figure 3, two top cover water inlet pipes 3 be located at penstock 4 positive northeast and positive southwestward, pressure
4 bottom symmetrical of power steel pipe be arranged two drainage box water inlets 9, drainage box drainage interface 9 with 18 ° of vertical direction angle.It is right in this way
Claim profile set, high head hydraulic turbine negative sense thrust, which is laid down, can be good at reaching effect.It is conducive to the pure of dry season in this way
Water purification cooperates surge suppressor to obtain acquisition cooling water well.
The design for optimizing high head hydraulic turbine water distributor increases a surge suppressor, solves high head hydraulic turbine
The excessive adverse effect of negative sense thrust, it is ensured that power station can steady in a long-term, safe operation, improve the mixed economy effect in power station
Benefit.Although whole equipment structure is simple, the installation position selection for top cover water inlet pipe is emphasis, can be good at eliminating
Negative sense thrust.
Claims (5)
1. a kind of novel Francis Turbine with High Rated Head surge suppressor, it is characterised in that: intake including valve, adapter tube and top cover
Pipe, top cover water inlet pipe level are linked into before hydraulic turbine main valve on penstock, symmetrical two top covers water inlet on penstock
Pipe, top cover water inlet pipe are located at the concora crush elbow interface on the outside of the hydraulic turbine equipped with 90 °, and valve is linked on concora crush elbow interface, valve
Door other end is equipped with adapter tube.
2. a kind of novel Francis Turbine with High Rated Head surge suppressor as described in claim 1, it is characterised in that: the top cover into
Water pipe is extend at top cover.
3. a kind of novel Francis Turbine with High Rated Head surge suppressor as described in claim 1, it is characterised in that: the valve is adopted
With motor-driven valve, and top cover water inlet pipe is located at one end inside penstock and is equipped with pressure inductor, and pressure inductor is linked into electronic
In valve control.
4. a kind of novel Francis Turbine with High Rated Head surge suppressor as claimed in claim 2, it is characterised in that: the valve is adopted
With motor-driven valve, and top cover water inlet pipe is located at one end inside penstock and is equipped with pressure inductor, and pressure inductor is linked into electronic
In valve control.
5. a kind of novel Francis Turbine with High Rated Head surge suppressor as described in claim any one of 1-4, it is characterised in that: institute
State two top cover water inlet pipes be located at penstock positive northeast and positive southwestward, penstock bottom symmetrical be arranged two
Drainage box water inlet, drainage box drainage interface with 15 ° -20 ° of vertical direction angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013870.2U CN208502937U (en) | 2018-06-29 | 2018-06-29 | A kind of novel Francis Turbine with High Rated Head surge suppressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821013870.2U CN208502937U (en) | 2018-06-29 | 2018-06-29 | A kind of novel Francis Turbine with High Rated Head surge suppressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502937U true CN208502937U (en) | 2019-02-15 |
Family
ID=65282732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821013870.2U Active CN208502937U (en) | 2018-06-29 | 2018-06-29 | A kind of novel Francis Turbine with High Rated Head surge suppressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208502937U (en) |
-
2018
- 2018-06-29 CN CN201821013870.2U patent/CN208502937U/en active Active
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