CN108506140A - A kind of water distributor that movable guide vane can be sealed reliably - Google Patents
A kind of water distributor that movable guide vane can be sealed reliably Download PDFInfo
- Publication number
- CN108506140A CN108506140A CN201810267186.5A CN201810267186A CN108506140A CN 108506140 A CN108506140 A CN 108506140A CN 201810267186 A CN201810267186 A CN 201810267186A CN 108506140 A CN108506140 A CN 108506140A
- Authority
- CN
- China
- Prior art keywords
- guide vane
- movable guide
- sealing plate
- water distributor
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
- F03B3/183—Adjustable vanes, e.g. wicket gates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/006—Sealing arrangements
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The present invention relates to the water distributors that hydraulic turbine field more particularly to a kind of movable guide vane can reliably seal.The present invention includes head cover and base ring, is connected with pivot by bearing between head cover and base ring, movable guide vane is equipped on pivot；The upper end of the movable guide vane and the lower end of movable guide vane are both provided with sliding slot, and sealing plate is arranged in sliding slot, and the driving mechanism for pushing sealing plate to be moved in sliding slot is connected on sealing plate；The upper end of movable guide vane and the lower end of movable guide vane are mounted on squeezing rod, and pressure sensor is mounted on head cover and base ring, and pressure sensor is located at the end position of squeezing rod when movable guide vane is closed, and pressure sensor is electrically connected with driving mechanism.The water distributor that the present invention provides a kind of by sealing plate blocks gap to seal, solves the problems, such as that the sealing element of existing water distributor is easy to be extruded or be crushed to lead to seal failure.
Description
Technical field
The present invention relates to the water distributors that hydraulic turbine field more particularly to a kind of movable guide vane can reliably seal.
Background technology
Water distributor is a kind of facility for water guide.Turbine gate mechanism be turbine-generator units core component it
One, it is the device of control enters unit in operation water (flow) direction and size, the stability to entire unit operation and safety
It is most important.The effect of turbine gate mechanism mainly forms and changes the circular rector into runner flow, using rotary type
More wicket gate controls of good performance ensure flow with the energy loss of very little, enter along even circumferential under different flows and turn
Wheel.Ensure the hydraulic turbine have good hydraulic characteristic(s), adjust flow, to change unit output, normally with accidental shutdown when, seal
Flow stops unit rotation.
Movable guide vane is the important component of water distributor, is played to operation and the start and stop of entire unit most important
Effect.Currently, with the raising of power station head, the water pressure that movable guide vane is subject to is caused to increase, therefore activity is caused to be led
Leaf is vertically connected with the connection excessively high problem of local stress between disk and valve body, disk diameter is vertically connected with by increasing, to increase circle
Disk and valve body connection area and the moment of inertia can solve stress problem, but directly result in unit off-mode after disk diameter increase
When water leakage increase.
The orderly closedown of the conventional hydraulic turbine blocks water flow effects by closing movable guide vane completion, is finally reached shutdown and makees
With.In, low water turbine movable guide vane end face seal generally use elastic compensating non-metal type end face seal structure.Non-metal type
End face is arranged the larger nonmetallic sealing of decrement by movable guide vane endface and realizes sealing effect, although this sealing can
It leans on, but is fed back in recent years according to power station, since the crush of nonmetallic sealing is larger, while without effectively being controlled, being caused
In movable guide vane rotary course repeatedly and excessive compression, often there is the phenomenon that squeezing out, conquassation, serious shadow to sealing element in sealing element
The service life and effect for ringing sealing element are directly resulted in and are closed even if movable guide vane, but no completely cut off flow, and this leak
Belong to high-speed jet, the cavitation erosion of flow passage components can be accelerated, increases maintenance cost；Meanwhile water leakage it is larger when can lead to machine
Group can not shut down and stopping process in the serious problems such as wriggling, water resource waste, cause power station quality accident, influence power station
Safety, economical operation.
Invention content
The present invention overcomes the deficiencies in the prior art, a kind of water guide machine for by sealing plate blocking gap to seal is provided
Structure solves the problems, such as that the sealing element of existing water distributor is easy to be extruded or be crushed to lead to seal failure.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of water distributor that movable guide vane can be sealed reliably, including head cover and base ring, pass through axis between head cover and base ring
It holds and is connected with pivot, movable guide vane is installed on pivot；The upper end of the movable guide vane and the lower end of movable guide vane are both provided with
Sliding slot is arranged with sealing plate in sliding slot, and the driving mechanism for pushing sealing plate to be moved in sliding slot is connected on sealing plate；Activity is led
The upper end of leaf and the lower end of movable guide vane are mounted on squeezing rod, and pressure sensor is mounted on head cover and base ring, and pressure passes
Sensor is located at the end position of squeezing rod when movable guide vane is closed, and pressure sensor is electrically connected with driving mechanism.
As the preferred embodiment of the present invention, the driving mechanism includes hydraulic cylinder, and solenoid valve, electromagnetism are connected on hydraulic cylinder
Valve is electrically connected with pressure sensor, and the cylinder sleeve of hydraulic cylinder is installed on movable guide vane, and piston rod and the sealing plate of hydraulic cylinder are fixed
Connection.
As the preferred embodiment of the present invention, the position that sealing plate is corresponded on the position and base ring of sealing plate is corresponded on the head cover
It sets and is both provided with seal groove, sealed bolster is provided in seal groove.
As the preferred embodiment of the present invention, it is connected on the sealing plate for sealing gap between pivot and sealing plate
Hold-down mechanism.
As the preferred embodiment of the present invention, the sealing plate is provided with pressing groove, hold-down mechanism packet close to the side of pivot
Spring is included, one end of spring is connected in pressing groove, and the other end of spring is connected with pressure plate.
As the preferred embodiment of the present invention, the squeezing rod is connected on movable guide vane end face close to movable guide vane side
Position.
Compared with prior art, the beneficial effects of the invention are as follows：
1, when movable guide vane is closed, squeezing rod presses pressure sensor, and pressure sensor triggers driving mechanism action, drives
Motivation structure drives sealing plate to rise, to which sealing plate can block the gap of movable guide vane upper and lower ends, avoid water leakage situation.It is living
After dynamic guide vane is closed, sealing plate just rises, and avoids the case where being extruded or be crushed using sealing element when sealing element.Pass through driving
Mechanism drives sealing plate lifting the case where sealing, improve the reliability of sealing, reduce seal fails, to ensure sealing dress
Setting can be used for a long time.
2, when squeezing rod presses pressure sensor, pressure sensor triggers solenoid valve, and solenoid valve makes hydraulic cylinder act, then
Sealing plate can rise in sliding slot and be closed to gap, ensure sealing effect.
3, when sealing plate rises, the one end of sealing plate far from movable guide vane is put in seal groove, and sealing plate will seal soft
Pad compresses, the case where further improving sealing effect, avoid the gap leak of movable guide vane upper and lower ends.
4, the gap between pivot and sealing plate can be sealed by hold-down mechanism, to further improve sealing effect
Fruit avoids leak dead angle, ensures that water leakage situation does not occur for the upper and lower ends of movable guide vane.
5, after stretching out of sliding slot when sealing plate, spring can push pressure plate to stretch out pressing groove, so that pressure plate is another
End can be pressed on pivot, ensured that the region between pivot and sealing plate is water-tight, further increased sealing effect.
6, squeezing rod be connected on movable guide vane end face close to movable guide vane side position, to squeezing rod will not with it is close
Sealing plate interferes, and ensures that sealing plate can be lifted normally.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the partial enlarged view at A in Fig. 1.
In figure, 1- head covers, 2- base rings, 3- pivots, 4- movable guide vanes, 5- sealing plates, 6- driving mechanisms, 7- pressure sensings
Device, 8- seal grooves, 9- hold-down mechanisms, 41- sliding slots, 42- squeezing rods, 61- hydraulic cylinders, 81- sealed bolsters, 91- springs, 92- pressures
Tight plate.
Specific implementation mode
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment one
A kind of water distributor that movable guide vane can be sealed reliably, including head cover 1 and base ring 2 lead between head cover 1 and base ring 2
It crosses bearing and is connected with pivot 3, movable guide vane 4 is installed on pivot 3；The lower end of the upper end and movable guide vane 4 of the movable guide vane 4
It is both provided with sliding slot 41, sealing plate 5 is arranged in sliding slot 41, is connected on sealing plate 5 and sealing plate 5 is pushed to be moved in sliding slot 41
Driving mechanism 6；The upper end of movable guide vane 4 and the lower end of movable guide vane 4 are mounted on squeezing rod 42, on head cover 1 and base ring 2
Pressure sensor 7 is installed, pressure sensor 7 is located at the end position of squeezing rod 42 when movable guide vane 4 is closed, pressure sensor
7 are electrically connected with driving mechanism 6.
When movable guide vane 4 is closed, squeezing rod 42 presses pressure sensor 7, and it is dynamic that pressure sensor 7 triggers driving mechanism 6
Make, driving mechanism 6 drives sealing plate 5 to rise, to which sealing plate 5 can block the gap of 4 upper and lower ends of movable guide vane, avoid leaking
Regimen condition.After movable guide vane 4 is closed, sealing plate 5 just rises, and avoids the feelings for being extruded or being crushed using sealing element when sealing element
Condition.It drives the lifting of sealing plate 5 to seal by driving mechanism 6, improves the reliability of sealing, reduce the feelings of seal fails
Condition ensures that sealing device can be used for a long time.
Embodiment two
On the basis of embodiment one, the driving mechanism 6 includes hydraulic cylinder 61, and solenoid valve is connected on hydraulic cylinder 61,
Solenoid valve is electrically connected with pressure sensor 7, and the cylinder sleeve of hydraulic cylinder 61 is installed on movable guide vane 4, the piston rod of hydraulic cylinder 61 with
Sealing plate 5 is fixedly connected.
When squeezing rod 42 presses pressure sensor 7, pressure sensor 7 triggers solenoid valve, and solenoid valve keeps hydraulic cylinder 61 dynamic
Make, then sealing plate 5 can rise in sliding slot 41 and be closed to gap, ensure sealing effect.
Embodiment three
On the basis of embodiment one or embodiment two, it is right on the position and base ring 2 of sealing plate 5 to be corresponded on the head cover 1
It answers the position of sealing plate 5 to be both provided with seal groove 8, sealed bolster 81 is provided in seal groove 8.
When sealing plate 5 rises, the one end of sealing plate 5 far from movable guide vane 4 is put in seal groove 8, and sealing plate 5 will seal
Cushion 81 compresses, the case where further improving sealing effect, avoid the gap leak of 4 upper and lower ends of movable guide vane.
Example IV
On the basis of above-mentioned any one embodiment, it is connected on the sealing plate 5 for sealing pivot 3 and sealing plate
The hold-down mechanism 9 in gap between 5.
Gap between pivot 3 and sealing plate 5 can be sealed by hold-down mechanism 9, to further improve sealing effect
Fruit avoids leak dead angle, ensures that water leakage situation does not occur for the upper and lower ends of movable guide vane 4.
Embodiment five
On the basis of above-mentioned any one embodiment, the sealing plate 5 is provided with pressing groove close to the side of pivot 3,
Hold-down mechanism 9 includes spring 91, and one end of spring 91 is connected in pressing groove, and the other end of spring 91 is connected with pressure plate 92.
After sealing plate 5 is stretched out out of sliding slot 41, spring 91 can push pressure plate 92 to stretch out pressing groove, to pressure plate 92
The other end can be pressed on pivot 3, ensure that the region between pivot 3 and sealing plate 5 is water-tight, further increase sealing effect
Fruit.
Embodiment six
On the basis of above-mentioned any one embodiment, the squeezing rod 42 is connected on 4 end face of movable guide vane close to living
The position of dynamic 4 side of guide vane.
Squeezing rod 42 is connected to the position close to 4 side of movable guide vane on 4 end face of movable guide vane, to which squeezing rod 42 will not
It is interfered with sealing plate 5, ensures that sealing plate 5 can be lifted normally.
Claims (6)
1. the water distributor that a kind of movable guide vane can be sealed reliably, including head cover (1) and base ring (2), head cover (1) and base ring (2)
Between pivot (3) is connected with by bearing, movable guide vane (4) is installed on pivot (3)；It is characterized in that, the movable guide vane
(4) lower end of upper end and movable guide vane (4) is both provided with sliding slot (41), and sealing plate (5), sealing plate are arranged in sliding slot (41)
(5) driving mechanism (6) for pushing sealing plate (5) to be moved in sliding slot (41) is connected on；The upper end of movable guide vane (4) and activity
The lower end of guide vane (4) is mounted on squeezing rod (42), and pressure sensor (7), pressure are mounted on head cover (1) and base ring (2)
Sensor (7) is located at the end position of squeezing rod (42) when movable guide vane (4) is closed, pressure sensor (7) and driving mechanism (6)
Electrical connection.
2. the water distributor that a kind of movable guide vane according to claim 1 can be sealed reliably, which is characterized in that the driving
Mechanism (6) includes hydraulic cylinder (61), and solenoid valve is connected on hydraulic cylinder (61), and solenoid valve is electrically connected with pressure sensor (7), liquid
The cylinder sleeve of cylinder pressure (61) is installed on movable guide vane (4), and the piston rod of hydraulic cylinder (61) is fixedly connected with sealing plate (5).
3. the water distributor that a kind of movable guide vane according to claim 1 can be sealed reliably, which is characterized in that the head cover
(1) it is corresponded on and corresponds to the position of sealing plate (5) on the position and base ring (2) of sealing plate (5) and be both provided with seal groove (8), sealed
It is provided with sealed bolster (81) in slot (8).
4. the water distributor that a kind of movable guide vane according to claim 1 can be sealed reliably, which is characterized in that the sealing
The hold-down mechanism (9) for sealing gap between pivot (3) and sealing plate (5) is connected on plate (5).
5. the water distributor that a kind of movable guide vane according to claim 4 can be sealed reliably, which is characterized in that the sealing
Plate (5) is provided with pressing groove close to the side of pivot (3), and hold-down mechanism (9) includes spring (91), one end connection of spring (91)
In in pressing groove, the other end of spring (91) is connected with pressure plate (92).
6. the water distributor that a kind of movable guide vane according to Claims 1 to 5 any one can be sealed reliably, feature exist
In the squeezing rod (42) is connected to the position close to movable guide vane (4) side on movable guide vane (4) end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267186.5A CN108506140A (en) | 2018-03-28 | 2018-03-28 | A kind of water distributor that movable guide vane can be sealed reliably |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810267186.5A CN108506140A (en) | 2018-03-28 | 2018-03-28 | A kind of water distributor that movable guide vane can be sealed reliably |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108506140A true CN108506140A (en) | 2018-09-07 |
Family
ID=63378958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810267186.5A Pending CN108506140A (en) | 2018-03-28 | 2018-03-28 | A kind of water distributor that movable guide vane can be sealed reliably |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108506140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372679A (en) * | 2018-12-04 | 2019-02-22 | 天津电气科学研究院有限公司 | A kind of hydraulic turbine Wriggle detecting device and its working method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203703A (en) * | 1976-11-04 | 1980-05-20 | Dominion Engineering Works Limited | Hydraulic turbo machine wicket gate seals |
| CN203809195U (en) * | 2014-05-06 | 2014-09-03 | 国家电网公司 | Compensation type guide vane end face sealing device |
| CN205297816U (en) * | 2015-12-31 | 2016-06-08 | 江苏航天水力设备有限公司 | Terminal surface leak -stopping device of hydraulic turbine movable guide vane |
| CN106702974A (en) * | 2015-07-17 | 2017-05-24 | 宜都市三友生产力促进中心 | Pressurized gate sealing device |
-
2018
- 2018-03-28 CN CN201810267186.5A patent/CN108506140A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4203703A (en) * | 1976-11-04 | 1980-05-20 | Dominion Engineering Works Limited | Hydraulic turbo machine wicket gate seals |
| CN203809195U (en) * | 2014-05-06 | 2014-09-03 | 国家电网公司 | Compensation type guide vane end face sealing device |
| CN106702974A (en) * | 2015-07-17 | 2017-05-24 | 宜都市三友生产力促进中心 | Pressurized gate sealing device |
| CN205297816U (en) * | 2015-12-31 | 2016-06-08 | 江苏航天水力设备有限公司 | Terminal surface leak -stopping device of hydraulic turbine movable guide vane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372679A (en) * | 2018-12-04 | 2019-02-22 | 天津电气科学研究院有限公司 | A kind of hydraulic turbine Wriggle detecting device and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180907 |