CN105697214B - The hydraulic turbine jet pipe that a kind of needle head buffering is closed - Google Patents
The hydraulic turbine jet pipe that a kind of needle head buffering is closed Download PDFInfo
- Publication number
- CN105697214B CN105697214B CN201610054764.8A CN201610054764A CN105697214B CN 105697214 B CN105697214 B CN 105697214B CN 201610054764 A CN201610054764 A CN 201610054764A CN 105697214 B CN105697214 B CN 105697214B
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- China
- Prior art keywords
- needle head
- jet pipe
- flange
- piston
- hydraulic
- Prior art date
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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
- F03B1/00—Engines of impulse type, i.e. turbines with jets of high-velocity liquid impinging on blades or like rotors, e.g. Pelton wheels; Parts or details peculiar thereto
- F03B1/04—Nozzles; Nozzle-carrying members
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
- Nozzles (AREA)
Abstract
The present invention provides the hydraulic turbine jet pipe that a kind of needle head buffering is closed, including the nozzle head with spout, nozzle head is connected by jet pipe with feed pipe, jet pipe is connected by spaced gusset with the chamber seat with hydraulic cavities, the cylinder sleeve and piston being fixed in hydraulic cavities, respectively with before piston, the hydraulic chamber into communication of rear end enters, liquid outlet channel, one end is fixed on piston, the other end passes through the needle stem that cylinder sleeve is connected with needle head, it is characterized in that mutually set groove and flange on piston and the opposite face of cylinder sleeve, flange is provided with throttle orifice, flange after groove mating with forming the main hydraulic cavities of outside and the secondary hydraulic cavities of inside, it is main, secondary hydraulic cavities are connected by the throttle orifice on flange.Needle head is closed and is divided into quick closedown section and slowly closing section, needle head motion impulsive contact force and water hammer power is effectively reduced, ensures unit safety operation, extend the service life of jet pipe.
Description
Technical field
The present invention relates to a kind of hydraulic turbine jet pipe, especially a kind of hydraulic turbine jet pipe of needle head buffering closing, belong to water
Turbine technical field.
Background technology
Jet pipe is one of core component of Pelton wheel, and it promotes the needle head in jet pipe reciprocal by fluid pressure
Move and realize the unlatching, closing or Flow-rate adjustment of water jet, and then adjust the current that rotary wheel of water turbine bucket is injected through jet pipe
Amount, to change the size of hydraulic turbine output.When unit breaks down or other situations need unit to stop operating, it is necessary to quick
Close the current that jet pipe projects.But, can be to needle head due to needle head and the effect of inertia of hydraulic coupling in the moment for closing jet pipe
And spout produces great impulsive contact force, while the unexpected stopping of high-velocity flow can produce one in jet pipe and water inlet pipe in jet pipe
Suddenly the water flow impact pressure increased --- the water hammer being namely commonly called as, both huge impulsive forces are all by the spray to contacting
Mouth parts cause to damage.Therefore, it is necessary to prior art is improved.
The content of the invention
It is an object of the invention to provide the hydraulic turbine jet pipe that a kind of needle head buffering is closed, and makes needle head first when closing
It hurry up, be rear slow, slowly closing is entered especially at terminal stage, beating power so as to reduce the impulsive contact force of needle head and water, improve jet pipe
With the safe and reliable property of water inlet pipe, increase the service life of unit.
The present invention is completed by following technical proposal：The hydraulic turbine jet pipe that a kind of needle head buffering is closed, including band spout
Nozzle head, nozzle head is connected by jet pipe with feed pipe, and jet pipe passes through spaced gusset and the chamber seat phase with hydraulic cavities
Even, the cylinder sleeve and piston being fixed in hydraulic cavities, respectively with the liquid inlet and outlet passage of the hydraulic chamber into communication of piston front and back ends, one end
It is fixed on piston, the other end passes through the needle stem that cylinder sleeve is connected with needle head, it is characterised in that opposite in piston and cylinder sleeve
Groove and flange are mutually set on face, flange is provided with throttle orifice, flange and main hydraulic cavities and the inside that outside is formed after groove mating
Secondary hydraulic cavities, major and minor hydraulic cavities are connected by throttle orifice on flange, so as in shutdown, by the liquid of piston rear end
Chamber injection pressure fluid is pressed, while the pressure fluid in main hydraulic cavities is discharged and promotes piston, needle stem and needle head quick
Moved to spout direction, until after groove and the flange mating that piston is mutually set with cylinder sleeve, needle head is just by the row in secondary hydraulic cavities
Liquid measure and drain age velocity are limited and slowly moved, and so as to the formation that effectively generation of elimination impulsive contact force and water are beaten, protect spout zero
Piece safety.
The groove is set to annular groove.
The flange is set to convex annular pipe, and the length of convex annular pipe specifically determines depending on the later stage translational speed of needle head,
The length length of convex annular pipe, then the later stage translational speed of needle head is slow, conversely, the length of convex annular pipe is short, then after needle head
Phase translational speed is fast.
Throttling hole number and pore size on the flange, are specifically determined, throttle orifice depending on the translational speed of needle head
Quantity is few, aperture is small, then the later stage translational speed of needle head is slow, conversely, throttling hole number is more, aperture is big, then after needle head
Phase translational speed is fast.
The flange outer wall is provided with the second annular groove, and sealing ring is provided with the second annular groove.
The present invention has following advantages and effect：Using such scheme, it is convenient to by needle head total travel quick closedown
It is divided into two sections of closings, i.e., most stroke quick closedown section, to ensure to close efficiency, the stroke of end fraction is slow
Section is closed, on the premise of jet pipe water-carrying capacity regulation main performance is met, to effectively reduce needle head motion impulsive contact force and water
Hammer power into shape, ensure unit safety operation.The present invention is simple and reasonable for structure, is convenient to process and mount, buffering effect is notable, makes jet pipe
Security, reliability are largely increased, and extend the service life of jet pipe and whole unit, are used in reality production and power station
In achieve preferable technology, economic benefit.
Brief description of the drawings
Fig. 1 is Pelton wheel jet pipe closed mode structure chart of the present invention；
Fig. 2 is Pelton wheel jet pipe opening structure chart of the present invention；
Fig. 3 is the A portions enlarged drawing in Fig. 1.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings.
The hydraulic turbine jet pipe that needle head buffering provided by the invention is closed, including the nozzle head 3 with spout 1, nozzle head 3 are logical
Cross jet pipe 5 with feed pipe 11 to be connected, jet pipe 5 is connected by spaced gusset 8 with the chamber seat with hydraulic cavities 6,13, outside chamber seat
Be water stream channel between the gusset 8 in portion, cylinder sleeve 4 and piston 7 be provided with hydraulic cavities 6,13, in addition to respectively with the front and back ends of piston 7
The liquid inlet and outlet passage that connects of hydraulic cavities 6,13, one end is fixed on piston 7, and the other end is connected through cylinder sleeve 4 with needle head 2
Needle stem 17, be respectively equipped with groove 15 and flange 14 on piston 7 and the opposite face of cylinder sleeve 4, flange 14 is provided with throttle orifice
21, preceding hydraulic cavities 6 are divided into the main hydraulic cavities 22 of outside and the secondary hydraulic cavities 18 of inside by flange 14 after being coupled with groove 15,
Major and minor hydraulic cavities 22,18 are connected by the throttle orifice 21 on flange 14；The groove 15 is arranged on cylinder sleeve 4, is specifically set to ring
Connected in star；The flange 14 is arranged on piston 7, is specifically set to convex annular pipe, and the length of convex annular pipe regards the later stage of needle head 2
Translational speed and specifically determine, the length of convex annular pipe length, then the later stage translational speed of needle head 2 is slow, conversely, convex annular pipe
Length is short, then the later stage translational speed of needle head 2 is fast；The quantity of throttle orifice 21 and pore size on the flange 14, depending on nozzle needle
First 2 translational speed and specifically determine, the quantity of throttle orifice 21 is few, aperture is small, then the later stage translational speed of needle head 2 is slow, conversely,
The quantity of throttle orifice 21 is more, aperture is big, then the later stage translational speed of needle head 2 is fast；It is recessed that the outer wall of flange 14 is provided with the second annular
Groove 19, provided with sealing ring 20,16 it is extraction raffinate passing away in the second annular groove 19.
During shutdown, pressure fluid is injected to the hydraulic cavities 13 of the rear end of piston 7 by liquid inlet and outlet passage 10 or 12, passed through simultaneously
Liquid inlet and outlet passage 9 by the pressure fluid in main hydraulic cavities 22 discharge and promote piston 7, needle stem 17 and needle head 2 quickly to
The direction of spout 1 is moved, until after the groove 15 and flange 14 of piston 7 and cylinder sleeve 4 are coupled, needle head 2 is just by secondary hydraulic cavities 18
Lifting rate and drain age velocity limitation and slowly move, so as to effectively reduce impulsive contact force and water beats power, protection spout parts peace
Entirely.
During start, only pressure fluid need to be rapidly injected into main hydraulic cavities 22 by liquid inlet and outlet passage 9, while liquid inlet and outlet lead to
Road 10 or 12 discharges the pressure fluid in the hydraulic cavities 13 of the rear end of piston 7, you can push piston 7, needle stem 17 and needle head 2
Quickly leave spout 1, you can.
Claims (5)
1. the hydraulic turbine jet pipe that a kind of needle head buffering is closed, including the nozzle head with spout, nozzle head is by jet pipe with supplying water
Pipe is connected, and jet pipe is connected by spaced gusset with the chamber seat with hydraulic cavities；The cylinder sleeve and piston being fixed in hydraulic cavities；
With the liquid inlet and outlet passage of the hydraulic chamber into communication of piston nose, and the liquid inlet and outlet passage with the hydraulic chamber into communication of piston rear end；One
End is fixed on piston, and the other end passes through the needle stem that cylinder sleeve is connected with needle head；It is it is characterized in that opposite with cylinder sleeve in piston
Face on mutually set groove and flange, flange is provided with throttle orifice, and flange forms the main hydraulic cavities of outside and interior after being coupled with groove
The secondary hydraulic cavities in portion, major and minor hydraulic cavities are connected by the throttle orifice on flange.
2. the hydraulic turbine jet pipe that needle head buffering according to claim 1 is closed, it is characterised in that the groove is set to ring
Connected in star.
3. the hydraulic turbine jet pipe that needle head buffering according to claim 1 is closed, it is characterised in that the flange is set to ring
The convex pipe of shape, the length of convex annular pipe specifically determine that the length of convex annular pipe is grown, needle head depending on the later stage translational speed of needle head
Later stage translational speed it is slow；The length of convex annular pipe is short, then the later stage translational speed of needle head is fast.
4. the hydraulic turbine jet pipe that needle head buffering according to claim 1 is closed, it is characterised in that the section on the flange
Discharge orifice quantity and pore size, are specifically determined depending on the translational speed of needle head, and throttling hole number is few, aperture is small, needle head
Later stage translational speed is slow；The hole number that throttles is more, aperture is big, then the later stage translational speed of needle head is fast.
5. the hydraulic turbine jet pipe that needle head buffering according to claim 1 is closed, it is characterised in that the flange outer wall is set
There is the second annular groove, sealing ring is provided with the second annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054764.8A CN105697214B (en) | 2016-01-27 | 2016-01-27 | The hydraulic turbine jet pipe that a kind of needle head buffering is closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610054764.8A CN105697214B (en) | 2016-01-27 | 2016-01-27 | The hydraulic turbine jet pipe that a kind of needle head buffering is closed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105697214A CN105697214A (en) | 2016-06-22 |
| CN105697214B true CN105697214B (en) | 2018-02-02 |
Family
ID=56229467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610054764.8A Active CN105697214B (en) | 2016-01-27 | 2016-01-27 | The hydraulic turbine jet pipe that a kind of needle head buffering is closed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105697214B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058021B (en) * | 2018-08-08 | 2020-01-24 | 湖南云箭集团有限公司 | Impulse turbine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH424679A (en) * | 1964-09-11 | 1966-11-15 | Escher Wyss Ag | Needle valve for free jet turbine |
| SU1202847A1 (en) * | 1983-10-17 | 1986-01-07 | Научно-Исследовательский И Конструкторско-Технологический Институт Местной Промышленности Рсфср | Pneumatic percussion mechanism |
| CN2718248Y (en) * | 2003-12-22 | 2005-08-17 | 哈尔滨多能电力高技术有限公司 | Multi-nozzle pelton turbine |
| CN201080890Y (en) * | 2007-07-24 | 2008-07-02 | 昆明电机有限责任公司 | Hydroturbine DC jet tube feedback device |
| CN102418645B (en) * | 2011-12-23 | 2013-06-19 | 重庆水轮机厂有限责任公司 | Single-cavity self-control nozzle component for hydraulic power of impulse turbine |
| CN103851017A (en) * | 2012-11-30 | 2014-06-11 | 无锡市协新气动有限公司 | Hydraulic-cylinder annular-space buffer |
| CN204283709U (en) * | 2014-12-05 | 2015-04-22 | 峨眉山市驰骋机械制造有限公司 | The manipulation of Horizontal displacement two-chamber is without spring formula water turbine nozzle |
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2016
- 2016-01-27 CN CN201610054764.8A patent/CN105697214B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105697214A (en) | 2016-06-22 |
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| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 650100 Kunming, Xishan District, Yunnan Spring Road, No. 349 Applicant after: Kunming Motor Factory Co Ltd Address before: 650100 Kunming, Xishan District, Yunnan Spring Road, No. 349 Applicant before: Harbin electric motor factory (Kunming) Co., Ltd. |
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