CN2326743Y - Internal-dismounting type hydraulic self-closing spray nozzle - Google Patents
Internal-dismounting type hydraulic self-closing spray nozzle Download PDFInfo
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- CN2326743Y CN2326743Y CN98202859U CN98202859U CN2326743Y CN 2326743 Y CN2326743 Y CN 2326743Y CN 98202859 U CN98202859 U CN 98202859U CN 98202859 U CN98202859 U CN 98202859U CN 2326743 Y CN2326743 Y CN 2326743Y
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- nozzle
- nozzle needle
- needle
- chamber
- spring
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The utility model relates to an internal-dismounting hydraulic self closing spray nozzle, which is suitable for the flow regulation of the impulse turbine of a hydroelectric generating set. The utility model is characterized in that the utility model adopts a liquid pressure slide valve, an electromagnetic valve, a needle closing chamber, and a needle opening chamber to control the left and right motion of the shaft of the needle and the needle; the length of a spring and the length of a nozzle are reduced by a bidirectional acting spring which is sheathed on the axis of the needle. Hydraulic self close is formed by the gap between the needle and an end sheath and the hollow cavity at the left end of the needle; thus, the accidents of the run away of a machine set due to the disappear of power utilization of electric stations and factories or pressure loss of oil pressure devices can be avoided. The utility model which adopts the structure which a screw fixes an isolating sleeve has the advantages of convenient assembly, disassembly, maintenance, spare parts, and replacement, compact structure, small volume, easy manufacture, and good adjusting performance.
Description
The utility model relates to a kind of Flow-rate adjustment nozzle that is applied to the impulse turbine of hydroelectric power unit, the especially self-closing nozzle of internal-dismounting type waterpower.
The nozzle volume of the impulse turbine of traditional water power generator group is big, makes mounting or dismounting and safeguards extremely inconvenient.Chinese patent 95242026.0 discloses a kind of " nozzle of impulse turbine and control mechanism thereof ", though this patent simplifies the structure, maintenance is also than traditional convenience, but because closing by the oil pressure of oil pressure unit of nozzle needle controlled, thereby under Hydroelectric Plant electricity consumption disappearance or oil gear decompression situation, nozzle needle will be washed open, and the water in the nozzle is ejection constantly, causes the unit runaway accident.In addition, what this patent was sleeved on that spring on the nozzle needle axle adopts is the single effect spring, and its decrement is 100% stroke, so its spring and nozzle are all longer, the overall structure of nozzle is still bigger like this.
The purpose of this utility model provides the self-closing nozzle of a kind of internal-dismounting type waterpower, by changing the action mode of nozzle arrangements and spring, solve the closing problem of nozzle nozzle needle under the situation of disappearance of power station station service or oil gear decompression, thereby avoid the generation of unit runaway accident.
Concrete scheme of the present utility model is: comprise and reply axle, nozzle pipe, protecgulum, screw, nozzle, flow diverter, answer arm, nozzle needle axle, spring, nozzle needle, it is characterized in that: the nozzle carrier in the nozzle pipe is provided with nozzle needle and cuts out chamber and nozzle needle unlatching chamber, the chamber A that nozzle needle is closed chamber and hydraulic efficiency slide valve joins, and the chamber B of hydraulic efficiency slide valve joins through solenoid valve and nozzle needle unlatching chamber; Nozzle needle beam warp separation sleeve is sleeved in the nozzle carrier, at the front end of nozzle carrier the end cover is installed, and is connected with piston, seal ring at the afterbody of nozzle needle axle; Be set with two-way function spring and pad on the nozzle needle axle between piston and the separation sleeve, they are positioned at nozzle needle and open the chamber, and wherein pad is positioned at the both sides of spring, at nozzle needle axle front end nozzle needle is installed.
The utility model closes the chamber by hydraulic efficiency slide valve, solenoid valve and nozzle needle and nozzle needle is opened the move left and right of chamber control nozzle needle axle and nozzle needle, thereby changes the area of passage of nozzle, reaches the purpose of regulating flow, opening or closing the flowing water passage.
Adopt the such scheme compact structure, volume is little, makes simply, and adjusting function is good, install and remove easy to maintenancely, can avoid because of the unit runaway accident under disappearance of power station station service or the oil gear decompression situation.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the utility model is installed on a kind of situation on the impulse turbine, and it is the situation that four nozzles 28 have been installed in impulse turbine.
As can be seen from Figure 1: the utility model is mainly by replying axle 1, nozzle pipe 2, protecgulum 3, screw 4, nozzle 5, flow diverter 6, reply arm 7, seal ring 8, piston 9, pad 10, nozzle needle axle 11, spring 12, pad 13, separation sleeve 14, seal ring 15, screw 16, dust ring 17, screw 18, nozzle needle 19, seal ring 21, lining 22, end cover 24, hydraulic efficiency slide valve 25, solenoid valve 26 is formed, its structure characteristic is: the nozzle carrier in the nozzle pipe 2 is provided with nozzle needle and cuts out chamber 20 and nozzle needle unlatching chamber 23, the chamber A that nozzle needle is closed chamber 20 and hydraulic efficiency slide valve 25 joins, and the chamber B of hydraulic efficiency slide valve 25 opens chamber 23 through solenoid valve 26 and nozzle needle and joins; Nozzle needle axle 11 is sleeved in the nozzle carrier through separation sleeve 14, at the front end of nozzle carrier end cover 24 is installed, and is connected with piston 9, seal ring 8 at the afterbody of nozzle needle axle 11; Be set with two-way function spring 12 and pad 10,13 on the nozzle needle axle 11 between piston 9 and the separation sleeve 14, they are positioned at nozzle needle and open chamber 23, and wherein pad 10 and 13 is positioned at the both sides of spring 12, at nozzle needle axle 11 front ends nozzle needle 19 is installed.
Can further find out from Fig. 1: spring 12 is a kind of beidirectional multi-disc belleville spring or cylindrically coiled spring.Adopt this spring can reduce spring and nozzle length, thereby dwindle volume of the present utility model.When nozzle needle 19 moved to standard-sized sheet or complete shut-down position to the left or to the right from 50% position, nozzle needle 19 all passed through the pad 10 or 13 pressure springs 12 of spring 12 both sides, and decrement is 50% stroke.Separation sleeve 14 is installed in the nozzle carrier front portion of nozzle pipe 2 by screw 16 in Fig. 1, and four road seal rings 15 are housed inside and outside separation sleeve 14, has ring-type separate cavities 27 between the two seals circle of the left and right sides, and this separate cavities 27 is connected atmosphere through row's small opening of nozzle pipe 2; Port at separation sleeve 14 is equipped with dust ring 17.The utility model adopts the fixedly structure of separation sleeve 14 of screw 16, after removing screw 18, screw 16 and nozzle needle 19, can split out whole parts in nozzle carrier, keeps in repair and parts replacement, has shortened the repair time.The piston 9 that is set in nozzle needle axle 11 afterbodys in Fig. 1 contacts through the nozzle carrier of lining 22 with nozzle pipe 2, is provided with seal ring 21 in lining 22 outer rings, can guarantee that like this seal ring 8 of piston 9 can not damage because of the defective of foundry goods.The utility model adopts the structure that leaves the gap between nozzle needle 19 and the end cover 24, help the power station station service disappear or during the oil gear decompression water from the gap, enter nozzle needle 19 rear ends, hydraulic pressure overcomes spring force, pressure spring, nozzle needle 19 is promoted forward, the shut-off nozzle mouth 5 gradually, and the hydraulic generator unit is stopped operating, and runaway accident does not take place.
As shown in Figure 1: hydraulic efficiency slide valve 25 is a kind of three-position four-way hydraulic guiding valves.
Working condition of the present utility model is: hydraulic efficiency slide valve 25 and solenoid valve 26 are handled by the control section of water turbine, when the water turbine control section need be opened nozzle needle, hydraulic efficiency slide valve 25 is sent into nozzle needle with pressure oil P through solenoid valve 26 and is opened in the chamber 23, the pressure oil that nozzle needle is closed in the chamber 20 is discharged from 0 end of hydraulic efficiency slide valve 25, at this moment nozzle needle axle 11 and nozzle needle 19 are moved to the left, so nozzle 5 is opened.When the water turbine control section needs nozzle needle to close, hydraulic efficiency slide valve 25 is directly sent pressure oil P to nozzle needle and is closed chamber 20, the pressure oil that nozzle needle is opened in the chamber 23 is discharged from 0 end of hydraulic efficiency slide valve 25 through solenoid valve 26, and at this moment nozzle needle axle 11 and nozzle needle 19 move right, so nozzle 5 is closed.Nozzle needle axle 11 is by replying arm 7 and replying the control section that axle 1 is given the position feedback of nozzle needle 19 water turbine at any time, so that make new regulating command.When power station station service disappearance or oil gear decompression occurring, the pressure oil that solenoid valve 26 actions, nozzle needle are opened in the chamber 23 is discharged from solenoid valve 26 gradually, so under the hydraulic action of nozzle needle left end, nozzle needle axle 11 and nozzle needle 19 move right, and nozzle 5 can be closed.
Claims (5)
1. self-closing nozzle of internal-dismounting type waterpower, comprise and reply axle (1), nozzle pipe (2), protecgulum (3), screw (4), nozzle (5), flow diverter (6), answer arm (7), nozzle needle axle (11), spring (12), nozzle needle (19), it is characterized in that: the nozzle carrier in the nozzle pipe (2) is provided with nozzle needle and cuts out chamber (20) and nozzle needle unlatching chamber (23), the chamber A that nozzle needle is closed chamber (20) and hydraulic efficiency slide valve (25) joins, and the chamber B of hydraulic efficiency slide valve (25) opens chamber (23) through solenoid valve (26) and nozzle needle and joins; Nozzle needle axle (11) is sleeved in the nozzle carrier through separation sleeve (14), at the front end of nozzle carrier end cover (24) is installed, and is connected with piston (9), seal ring (8) at the afterbody of nozzle needle axle (11); On the nozzle needle axle (11) between piston (9) and the separation sleeve (14), be set with two-way function spring (12) and pad (10,13), they are positioned at nozzle needle and open chamber (23), wherein pad (10,13) is positioned at the both sides of spring (12), at nozzle needle axle (11) front end nozzle needle (19) is installed.
2. the self-closing nozzle of internal-dismounting type waterpower according to claim 1 is characterized in that: spring (12) is a kind of beidirectional multi-disc belleville spring or cylindrically coiled spring.
3. the self-closing nozzle of internal-dismounting type waterpower according to claim 1, it is characterized in that: separation sleeve (14) is installed in the nozzle carrier front portion of nozzle pipe (2) by screw (16), four road seal rings (15) are housed inside and outside separation sleeve (14), have ring-type separate cavities (27) between the two seals circle of the left and right sides, this separate cavities (27) is connected atmosphere through row's small opening of nozzle pipe (2); Port at separation sleeve (14) is equipped with dust ring (17).
4. the self-closing nozzle of internal-dismounting type waterpower according to claim 1 is characterized in that: the piston (9) that is set in nozzle needle axle (11) afterbody contacts through the nozzle carrier of lining (22) with nozzle pipe (2), is provided with seal ring (21) in lining (22) outer ring.
5. the self-closing nozzle of internal-dismounting type waterpower according to claim 1 is characterized in that: leave the gap between nozzle needle (19) and the end cover (24), nozzle needle (19) left end has a cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98202859U CN2326743Y (en) | 1998-04-02 | 1998-04-02 | Internal-dismounting type hydraulic self-closing spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98202859U CN2326743Y (en) | 1998-04-02 | 1998-04-02 | Internal-dismounting type hydraulic self-closing spray nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2326743Y true CN2326743Y (en) | 1999-06-30 |
Family
ID=33959823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98202859U Expired - Fee Related CN2326743Y (en) | 1998-04-02 | 1998-04-02 | Internal-dismounting type hydraulic self-closing spray nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2326743Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422547C (en) * | 2006-09-19 | 2008-10-01 | 四川东风电机厂有限公司 | Multi-jet turbine association and shutoff device |
| CN102418645A (en) * | 2011-12-23 | 2012-04-18 | 重庆水轮机厂有限责任公司 | Single-cavity self-control nozzle component for hydraulic power of impulse turbine |
| CN105829706A (en) * | 2013-09-10 | 2016-08-03 | 阿尔斯通再生能源技术公司 | Hydraulic injector of a pelton turbine and method for the partial disassembly of such an injector |
| CN110296030A (en) * | 2019-07-27 | 2019-10-01 | 四川力源水电设备制造有限公司 | The external servomotor jet pipe assembling structure of the hydraulic turbine |
| CN114458523A (en) * | 2022-03-21 | 2022-05-10 | 东方电气集团东方电机有限公司 | Water-operated impulse turbine double-adjusting mechanism |
-
1998
- 1998-04-02 CN CN98202859U patent/CN2326743Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422547C (en) * | 2006-09-19 | 2008-10-01 | 四川东风电机厂有限公司 | Multi-jet turbine association and shutoff device |
| CN102418645A (en) * | 2011-12-23 | 2012-04-18 | 重庆水轮机厂有限责任公司 | Single-cavity self-control nozzle component for hydraulic power of impulse turbine |
| CN105829706A (en) * | 2013-09-10 | 2016-08-03 | 阿尔斯通再生能源技术公司 | Hydraulic injector of a pelton turbine and method for the partial disassembly of such an injector |
| CN105829706B (en) * | 2013-09-10 | 2019-06-04 | 通用电气再生能源技术公司 | The hydraulic jet device of impulse turbine and the method for the part disassembly for such injector |
| CN110296030A (en) * | 2019-07-27 | 2019-10-01 | 四川力源水电设备制造有限公司 | The external servomotor jet pipe assembling structure of the hydraulic turbine |
| CN114458523A (en) * | 2022-03-21 | 2022-05-10 | 东方电气集团东方电机有限公司 | Water-operated impulse turbine double-adjusting mechanism |
| CN114458523B (en) * | 2022-03-21 | 2023-04-21 | 东方电气集团东方电机有限公司 | Double-adjusting mechanism of water-operated impulse turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |