CN202483780U - Waterpower single-cavity self-control type nozzle component of impact type water turbine - Google Patents
Waterpower single-cavity self-control type nozzle component of impact type water turbine Download PDFInfo
- Publication number
- CN202483780U CN202483780U CN2011205487222U CN201120548722U CN202483780U CN 202483780 U CN202483780 U CN 202483780U CN 2011205487222 U CN2011205487222 U CN 2011205487222U CN 201120548722 U CN201120548722 U CN 201120548722U CN 202483780 U CN202483780 U CN 202483780U
- Authority
- CN
- China
- Prior art keywords
- nozzle needle
- oil
- needle
- nozzle
- piston
- 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.)
- Withdrawn - After Issue
Links
Images
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
-
- 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
Abstract
The utility model discloses a waterpower single-cavity self-control type nozzle component of an impact type water turbine. The waterpower single-cavity self-control type nozzle component comprises a spray pipe body, a nozzle, a spray needle, a spray needle rod, a servomotor piston and a disk spring, wherein the servomotor piston is arranged in a servomotor cylinder; the spray needle is fixedly connected with the spray needle rod through the piston; the disk spring is sleeved on the spray needle rod; the spray needle is fixedly connected with the piston through a spray needle shaft; an annular radial flange is formed on the inner surface of the spray pipe body around the spray needle shaft; a pressure oil cavity is formed between the adjacent end faces of the flange and the piston; and a hydraulic pressure balance cavity is formed between the adjacent end faces of the flange and the tail of the spray needle. Compared with the prior art, the waterpower single-cavity self-control type nozzle component has the advantages that the spray needle is controlled to move through a single oil pressure cavity; under the condition that a control mechanism is out of oil pressure, the spray needle is also slowly closed until the spray needle is totally closed; and the waterpower single-cavity self-control type nozzle component has a simple structure and is used safely and reliably.
Description
Technical field
The utility model relates to impulse turbine, particularly a kind of single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower.
Background technique
In the more rich mountain area of high head resource, adopt impulse turbine to have bigger advantage with respect to Francis turbine, the impulse water wheel engine efficiency of function admirable can reach about 91%.The core component of impulse turbine control unit is exactly nozzle assembly (can be referred to as the direct current jet pipe again).The Safety performance of nozzle assembly is directly connected to the safe and stable operation of impulse water wheel unit.
For traditional oil pressure internal control formula nozzle assembly, its nozzle needle piston all adopts the control of two-chamber oil pressure, not only pipeline and system complex; And oil pressure control is all adopted in the opening and closing of nozzle needle; Under speed regulator mistake oil pressure situation, nozzle needle is stressed possibly can't to close nozzle needle towards closing or opening fully.
The model utility content
The utility model purpose is to overcome said defective, and a kind of single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower is provided, and adopts single chamber control nozzle needle; Control system is simplified; And lose at control mechanism under the situation of oil pressure, nozzle needle also can slowly be closed to the complete shut-down position, and is safe and reliable.
The described single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower of the utility model; Comprise spout body, nozzle, nozzle needle, needle stem and nozzle needle feedback mechanism; Be provided with servomotor cylinder and water flow passage in the spout body, the nozzle needle feedback mechanism comprises servomotor piston and Returnning spring, and the servomotor piston is arranged in the servomotor cylinder; Nozzle needle is fixedly connected with needle stem through the servomotor piston; Returnning spring is placed on the needle stem, and nozzle needle is fixedly connected through the nozzle needle axle with the servomotor piston, and the diameter of nozzle needle axle is less than the diameter and the piston diameter of nozzle needle tail end face; The internal surface near the nozzle needle axle of spout body forms a ring radial flange, the outer surface Spielpassung of the internal surface of flange and nozzle needle axle around the nozzle needle axle;
Form the pressure oil oil pocket between the adjacent face of flange and said piston; The pressure oil runner that is communicated with said oil pocket is set in the tube wall of spout body; In the said pressure oil runner oil resistance device is set; Form water pressure balance cavity between the adjacent face of flange and nozzle needle afterbody, water pressure balance cavity is communicated with water flow passage.
During use; The pressure oil runner is connected with the impulse turbine special governor; After the pressure oil oil pocket imposed oil pressure, because the existence of water pressure balance cavity, the nozzle needle afterbody received forward the hydraulic pressure thrust of (promptly towards the nozzle direction); The nozzle needle head receives backward the thrust of (promptly towards nozzle tail end direction), and piston receives backward oil pressure thrust, receives the thrust of Returnning spring forward away from a side of nozzle needle near a side of nozzle needle.At this moment, oil pressure is greater than described hydraulic pressure thrust and spring thrust, and nozzle needle moves backward, and nozzle is opened, and need not oil pressure when closing.When needing shut-off nozzle, remove oil pressure, nozzle needle resets under spring thrust and hydraulic pressure thrust, and nozzle is closed, and has realized the effect of single oil pressure chamber control nozzle needle and reciprocating motion of the pistons, has simplified the structure of nozzle needle assembly, and stable and reliable operation.
Preferably, said oil resistance device comprises telescopic pipe, and the telescopic pipe outer wall is connected with pressure oil oil duct inner thread; The interior tube chamber of telescopic pipe is along self vertically comprising the first chamber section and the second chamber section; The internal diameter of the first chamber section is less than the internal diameter of the second chamber section; Be with orifice plug in the end away from the first chamber section of the second chamber section, orifice plug is provided with the central hole I, and the central hole I is the reducing hole; Also comprise the throttling sheet; The throttling sheet is arranged in the second chamber section and between the first chamber section and orifice plug; Corresponding one by one end surface and the orifice plug end surface that withstands the first chamber section that is adjacent in surface, throttling sheet two end part, the throttling sheet vertically is provided with the central hole II along interior tube chamber, and the central hole II is made up of the hole section of odd number; Hole hop count by central hole II end rises, and the hole section diameter of odd bits is greater than the diameter of even bit.
During use; Through telescopic pipe outer wall and pressure oil oil duct inner thread ways of connecting the oil resistance device is installed in the pressure oil runner; The first chamber section is towards the spout body outer wall, and the second chamber section is towards the spout body inwall, and pressure oil can only flow through in the through hole of oil resistance device in the pressure oil runner; Because the through hole of oil resistance device is the big little multistage throttle structure of part hole section internal diameter of part hole section internal diameter; After removing oil pressure, the pressure oil in the oil pocket can only slowly be discharged, and has realized that nozzle needle slowly closes.
Preferably, said Returnning spring is the dish spring, and than existing technology circle formula helical spring commonly used, it is less to produce the identical required dish spring of power size, and can overcome the defective that helical spring is prone to cause rotating force.
Preferably, said dish spring is two groups, and is divided into the two ends of needle stem, and is more stable to the driving of needle stem.
Preferably, the needle stem tail end is provided with displacement transducer, is convenient to the position (stroke) of nozzle needle is passed to speed regulator with electric form, realizes the accurate control of nozzle needle stroke.
Preferably, the leakage of oil discharge orifice is set in the tube wall of nozzle body, an opening end of discharge orifice is formed on the spout body outer surface, and another opening end is formed on the internal surface of flange.
Preferably, said pressure oil runner radially is provided with along spout body, and pressure oil flows more unobstructed.General pressure oil oil duct and discharge orifice are oppositely arranged, and when nozzle assembly is installed, make discharge orifice vertically down.
The beneficial effect of the utility model: the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower of the utility model structure; Nozzle needle is fixedly connected through the nozzle needle axle with piston; The nozzle needle shaft diameter is less than nozzle needle tail end face diameter and piston diameter; The spout body internal surface forms a ring radial flange around the nozzle needle axle, forms the pressure oil oil pocket between the adjacent face of flange and piston, forms water pressure balance cavity between the adjacent face of flange and nozzle needle afterbody; Compared with prior art, the utility model only adopts single oil pressure chamber control nozzle needle to move, and structure is more simple, and loses under the situation of oil pressure at control mechanism, and nozzle needle also can slowly be closed to the complete shut-down position, and is safe and reliable.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of the utility model oil resistance device.
Below in conjunction with accompanying drawing the utility model is described further.
Embodiment
The single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower of present embodiment; Comprise spout body 1, nozzle 2, nozzle needle 3, needle stem 4 and nozzle needle feedback mechanism, be provided with servomotor cylinder 5 and water flow passage 6 in the spout body, the nozzle needle feedback mechanism comprises servomotor piston 7 and Returnning spring 8; Servomotor piston 7 is arranged in the servomotor cylinder 5; Nozzle needle 3 is fixedly connected with needle stem 4 through piston 7, and Returnning spring 8 is placed on the needle stem 4, in the present embodiment; Returnning spring is the dish spring; The dish spring is two groups and is divided into the two ends (as shown in the figure) of needle stem, and nozzle needle 3 is fixedly connected through nozzle needle axle 9 again with piston 7, and the diameter of nozzle needle axle 9 is less than the diameter of nozzle needle tail end face and the diameter of piston; The internal surface near the nozzle needle axle of spout body forms a ring radial flange 10, the outer surface Spielpassung of the internal surface of flange 10 and nozzle needle axle 9 around the nozzle needle axle; Form pressure oil oil pocket 11 between the adjacent face of flange 10 and piston, the pressure oil runner 13 that is communicated with oil pocket is set in the tube wall of spout body, oil resistance device 19 is set in the pressure oil runner 13; Form water pressure balance cavity 12 between the adjacent face of flange 10 and nozzle needle afterbody, water pressure balance cavity 12 is communicated with water flow passage 6.
During use, pressure oil runner 13 is connected with the impulse turbine special governor, after pressure oil oil pocket 11 imposed oil pressure, because the existence of water pressure balance cavity 12, the nozzle needle afterbody received forward the hydraulic pressure thrust P of (promptly towards the nozzle direction)
2, the nozzle needle head receives backward the thrust P of (promptly towards nozzle tail end direction)
3, piston receives oil pressure thrust P backward near a side of nozzle needle
4, receive dish spring thrust P forward away from a side of nozzle needle
1At this moment, oil pressure thrust P
4Greater than described hydraulic pressure thrust P
2With dish spring thrust P
1, nozzle needle moves backward, and nozzle is opened, and need not oil pressure when closing.When needing shut-off nozzle, remove oil pressure, nozzle needle is at dish spring thrust P
1With hydraulic pressure thrust P
2Reset under the effect, nozzle is closed.
In the present embodiment, said oil resistance device comprises telescopic pipe 16, and telescopic pipe 16 outer walls are connected with pressure oil oil duct 13 inner threads; The interior tube chamber of telescopic pipe is along self vertically comprising the first chamber section 161 and the second chamber section 162; The internal diameter of the first chamber section 161 is less than the internal diameter of the second chamber section 162; Be with orifice plug 17 in the end away from the first chamber section of the second chamber section 162; Orifice plug forms with the second chamber section internal thread through self outside thread and is threaded, and orifice plug is provided with central hole I 171, and central hole I 171 is the reducing hole; The described oil resistance device of present embodiment also comprises throttling sheet 18; Throttling sheet 18 is arranged in the second chamber section 162 and between the first chamber section 161 and orifice plug 17; Corresponding one by one end surface and orifice plug 17 end surfaces that withstand the first chamber section 161 that is adjacent in surface, throttling sheet 18 two end part; Throttling sheet 18 vertically is provided with central hole II 181 along interior tube chamber; The central hole II is made up of the hole section of odd number, is risen by the hole hop count of central hole II end, and the hole section diameter of odd bits is greater than the diameter of even bit.After removing oil pressure, because the oil resistance device is the multistage throttle structure, the pressure oil in the oil pocket can only slowly be discharged, and has realized that nozzle needle slowly resets, and nozzle is slowly closed.In the present embodiment, the throttling sheet is cascaded by two identical sub-sheet a symmetries of structure.
In the present embodiment, the needle stem tail end is provided with displacement transducer 14, and the testing signal of displacement transducer is imported outside speed regulator; Leakage of oil discharge orifice 15 is set in the tube wall of nozzle body, and an opening end of discharge orifice 15 is formed on the spout body outer surface, and another opening end is formed on the internal surface of flange; When pressure oil when the hydraulic balance cavity direction leaks, pressure oil flow to the leakage of oil discharge orifice will be stopped to flow, and is discharged by the leakage of oil discharge orifice; Avoid leakage of oil to flow into water pressure balance cavity and cause water pollution; Discharge orifice 15 is a straight hole, and pressure oil runner 13 all radially is provided with along spout body with discharge orifice 15, and it is more unobstructed that pressure oil and leakage of oil are flowed.
Need explanation at last; Above embodiment only is used to explain the technological scheme of the utility model and is unrestricted; Although specify, it will be appreciated by those skilled in the art that and to make amendment or be equal to replacement the technological scheme of the utility model with reference to the technological scheme of preferred embodiment to the utility model; And not breaking away from the aim and the scope of the utility model, it all should be encompassed in the middle of the protection domain of the utility model.
Claims (7)
1. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower; Comprise spout body (1), nozzle (2), nozzle needle (3), needle stem (4) and nozzle needle feedback mechanism; Be provided with servomotor cylinder (5) and water flow passage (6) in the spout body; The nozzle needle feedback mechanism comprises servomotor piston (7) and Returnning spring (8); Servomotor piston (7) is arranged in the servomotor cylinder (5), and nozzle needle (3) is fixedly connected with needle stem (4) through servomotor piston (7), and Returnning spring (8) is placed on the needle stem; It is characterized in that: nozzle needle (3) is fixedly connected through nozzle needle axle (9) with servomotor piston (7); The diameter of nozzle needle axle (9) is less than the diameter and the piston diameter of nozzle needle tail end face, and the internal surface near the nozzle needle axle of spout body forms a ring radial flange (10), the outer surface Spielpassung of the internal surface of flange (10) and nozzle needle axle (9) around nozzle needle axle (9);
Form pressure oil oil pocket (11) between the adjacent face of flange (10) and said piston (7); The pressure oil runner (13) that is communicated with said oil pocket is set in the tube wall of spout body; Oil resistance device (19) is set in the said pressure oil runner (13); Form water pressure balance cavity (12) between the adjacent face of flange (10) and nozzle needle afterbody, water pressure balance cavity (12) is communicated with water flow passage (6).
2. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower according to claim 1, it is characterized in that: said oil resistance device comprises telescopic pipe (16), telescopic pipe (16) outer wall is connected with pressure oil oil duct (13) inner thread;
The interior tube chamber of telescopic pipe is along self vertically comprising the first chamber section (161) and the second chamber section (162); The internal diameter of the first chamber section (161) is less than the internal diameter of the second chamber section (162); Be with orifice plug (17) in the end away from the first chamber section of the second chamber section (162); Orifice plug is provided with central hole I (171), and central hole I (171) is the reducing hole;
Also comprise throttling sheet (18); Throttling sheet (18) is arranged in the second chamber section (162) and is positioned between the first chamber section (161) and the orifice plug (17); Corresponding one by one end surface and orifice plug (17) end surface that withstands the first chamber section (161) that is adjacent in throttling sheet (18) surface, two end part; Throttling sheet (18) vertically is provided with central hole II (181) along interior tube chamber; The central hole II is made up of the hole section of odd number, is risen by the hole hop count of central hole II end, and the hole section diameter of odd bits is greater than the diameter of even bit.
3. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower according to claim 2, it is characterized in that: said Returnning spring (8) is the dish spring.
4. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower according to claim 3, it is characterized in that: said dish spring is two groups, and is divided into the two ends of needle stem.
5. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower according to claim 1, it is characterized in that: the tail end of needle stem (4) is provided with displacement transducer (14).
6. according to the described single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower of the arbitrary claim of claim 1 to 5; It is characterized in that: leakage of oil discharge orifice (15) is set in the tube wall of nozzle body; One opening end of discharge orifice is formed on the spout body outer surface, and another opening end is formed on the internal surface of flange (10).
7. the single chamber self-controlled type nozzle assembly that is used for impulse turbine waterpower according to claim 5, it is characterized in that: said pressure oil runner (13) radially is provided with along spout body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205487222U CN202483780U (en) | 2011-12-23 | 2011-12-23 | Waterpower single-cavity self-control type nozzle component of impact type water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205487222U CN202483780U (en) | 2011-12-23 | 2011-12-23 | Waterpower single-cavity self-control type nozzle component of impact type water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202483780U true CN202483780U (en) | 2012-10-10 |
Family
ID=46958207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205487222U Withdrawn - After Issue CN202483780U (en) | 2011-12-23 | 2011-12-23 | Waterpower single-cavity self-control type nozzle component of impact type water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202483780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2011
- 2011-12-23 CN CN2011205487222U patent/CN202483780U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103410632B (en) | Electric conical valve type gas flow regulator for solid rocket ramjets | |
| CN102418645B (en) | Single-cavity self-control nozzle component for hydraulic power of impulse turbine | |
| CN101737559B (en) | Labyrinth minimum flow control valve | |
| CN105114368B (en) | A kind of have the rotary work(exchanger extending influent stream corner structure | |
| CN106567866B (en) | A kind of fuel oil reinforcing centrifugal pump of anti-cavitation | |
| CN204099025U (en) | A kind of engine piston cooling structure | |
| CN102400879B (en) | Propellant spraying device for liquid pulse plasma thruster | |
| CN202483780U (en) | Waterpower single-cavity self-control type nozzle component of impact type water turbine | |
| CN204459179U (en) | A kind of venturi angle type control valve | |
| CN107401576B (en) | A kind of pantograph damper | |
| CN202360313U (en) | Propellant injection device for liquid pulse plasma thruster | |
| CN203743518U (en) | Inclined plate type slowly-closing stop check valve | |
| CN204284713U (en) | Throttle type crosses oil draining bolt auxiliary connection | |
| CN204573236U (en) | A kind of explosion-proof valve based on guide structure | |
| CN203585352U (en) | Delayed opening type throttling stop valve | |
| CN203757025U (en) | Waterproof hammer gate valve | |
| CN203594798U (en) | Piston-type flow adjusting valve | |
| CN207064746U (en) | A kind of water hammer discharge valve | |
| CN202021329U (en) | Novel fast discharging system of die casting machine | |
| CN202228248U (en) | Water pressure self balance nozzle without springs for impulse turbine | |
| CN204477540U (en) | Cross oil draining bolt auxiliary connection | |
| CN109058219A (en) | A kind of built-in sensors formula hydraulic cylinder device | |
| CN102328049A (en) | Pressurization piston of die casting machine | |
| CN203130592U (en) | Environmental-friendly full-adjusting vane pump | |
| CN107489612A (en) | Motor power device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20130619 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20121010 Effective date of abandoning: 20130619 |
|
| RGAV | Abandon patent right to avoid regrant |