CN2265437Y - Step screw servo type electricity-liquid converter - Google Patents
Step screw servo type electricity-liquid converter Download PDFInfo
- Publication number
- CN2265437Y CN2265437Y CN96235152U CN96235152U CN2265437Y CN 2265437 Y CN2265437 Y CN 2265437Y CN 96235152 U CN96235152 U CN 96235152U CN 96235152 U CN96235152 U CN 96235152U CN 2265437 Y CN2265437 Y CN 2265437Y
- Authority
- CN
- China
- Prior art keywords
- screw thread
- lining
- piston
- utility
- model
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
Landscapes
- Servomotors (AREA)
Abstract
The utility model relates to a stepping screw thread servo type electro-hydraulic converter which comprises a driver, a stepping motor, a screw thread valve core, and a differential piston. The utility model is characterized in that a lining (5) arranged in a differential piston cylinder block (6) is connected with the piston into integration, and the screw thread valve core (7) controlled by the stepping motor is installed in a column-shaped cavity (8) arranged in the center of the lining (5) and can move from top to bottom. On the structure design, the utility model thoroughly solves the defects of high failure rate and poor reliability of traditional electro-hydraulic converters, and has the advantages of favorable oil stain resistant ability, no clamp and seizure, oil consumption saving, etc. Besides, displacement of which the operating force can reach 150 kg can be provided, and manual operation can be kept and carried out after the power is cut off.
Description
The utility model relates to a kind of electro-control converter, particularly a kind of step-by-step movement screw thread servo type electro-control converter that is used for the flow output that electric weight is converted to mechanical displacement or liquid on the hydraulic generator unit speed regulator.
Electro-control converter is the core component of hydraulic turbine generator electrohydraulic governor.The operation of electrohydraulic governor shows, the electro-control converter of traditional electrohydraulic control type, the fault 40%～50% of its machinery hydraulic system is because electrohydraulic control causes that wherein the minimum flow area of electrohydraulic control and electromagnetic force have determined its oil rub resistance ability.A kind of nozzle-flapper type servo valve is arranged, its nozzle and the zero-bit gap X between the baffle plate
oWith nozzle bore diameter D
oRatio X
o/ D
oBe generally 1/8～1/16, and D
oGenerally has only a few tenths of a mm, X
oJust littler, be about 0.025 to 0.04mm.So very sensitive to greasy dirt, stop up easily.Another kind of moving coil electrohydraulic control, it is compared with nozzle-flapper type servo valve, and its oil rub resistance ability improves greatly.But owing to still be confined to traditional throttle orifice and sliding sleeve mode, the radial clearance of throttle diameter about 1mm control cover and one-level core plug still happens occasionally stuck or the throttle orifice phenomenon of blocking between 0.025～0.04.In addition, the moving-coil part is owing to structural limitations, and technological level is low, the ouput force of coil little (about 1Kg), stroke limiting system; Moving-coil partly goes between and disconnects or ground connection, also is this electro-control converter common faults phenomenon.
The utility model provides that a kind of screw thread is servo, valve body feedback type electric liquid converter, purpose is: improve electro-control converter reliability of operation on the hydrogovernor, reduce rate of fault, strengthen the ability of its oil rub resistance, and the output of the displacement with certain steering force is provided.
Described step-by-step movement screw thread servo type electro-control converter, comprise driver, stepper motor, screw thread spool, stepped piston each several part, it is characterized in that: place the lining (5) in the stepped piston cylinder body (6) to be connected as a single entity with piston, have two through hole on the jacket wall, be respectively variable orifice (2) and following variable orifice (1); Be contained in interior can the moving up and down in column type chamber (8) of lining (5) central authorities by the screw thread spool (7) of step motor control; Have two through hole on the wall of piston/cylinder (6), be respectively the oil-feed mouth of pipe (3) and the fuel-displaced mouth of pipe (4).
After the voltage signal of reaction water turbine generator rotating speed was added on the stepper motor, stepper motor rotated.Suppose that stepper motor is for being rotated counterclockwise this moment, then the screw thread spool moves down, last variable orifice (2) turns down, following variable orifice (1) is opened greatly, piston cavity (9) inner control oil pressure raises, promote lining (5) and move downward, variable orifice also moves down simultaneously up and down, and the oil pressure that raises in the piston cavity (9) continues to promote lining (5) and moves downward.Piston rod drives the next stage amplifying device, and after final controlling element is regulated the aperture of hydroturbine water intake valve (lock), water turbine quickens or slows down.Vice versa.So just form the system that rotational speed of water turbine is regulated in a closed loop control.
Described transducer has thoroughly solved the defective of traditional electrical liquid converter rate of fault height, poor reliability on the structural design, has stronger oil rub resistance ability, the displacement output that can provide steering force to reach 150Kg, not hair fastener, oil consumption is economized, can self-sustaining after the outage and carry out advantage such as manually-operable.
Fig. 1 is the utility model system principle diagram.(7) screw thread spool among the figure, (10) driver, (11) stepper motor, (12) stepped piston.
Fig. 2 is the utility model structural principle schematic representation.Variable orifice under (1) among the figure, (2) go up variable orifice, (3) oil-feed mouth of pipe, (4) fuel-displaced mouth of pipe, (5) lining, (6) piston/cylinder, (7) screw thread spool, the column type chamber of (8) lining (5) central authorities, (9) piston cavity.
Fig. 3 is the utility model structural representation.Number in the figure implication and Fig. 2 are in full accord, state slightly herein.
In the implementation process, stepper motor, screw thread spool, stepped piston should be made in a profile usually is in the columned cylindrical shell.But the moving operating panel of tennis partner on the stepper motor.Stepper motor adopts the big moment of Japan, segmentation to advance motor step by step.Because of stepper motor itself is exactly the position servo element, so need not join the recovery spring.Driver is adapted Japan the said firm also, and coupling is rationally.Precision 2000 step/circles ± 1 step error.Because output torque is big, the reliability height can guarantee not hair fastener.In addition, stepper motor line footpath is also thicker, and inner broken string is very rare.
The key technical indexes can be accomplished:
1. static oil consumption: 0.51/min
2. stroke: 20mm
3. ouput force: 150Kg 240Kg (during 4.0MPa)
4. the minimum total travel time: 0.5 (s)
Claims (1)
- A kind of step-by-step movement screw thread servo type electro-control converter, comprise driver, stepper motor, screw thread spool, stepped piston each several part, it is characterized in that: place the lining (5) in the stepped piston cylinder body (6) to be connected as a single entity with piston, have two through hole on it, be respectively variable orifice (2) and following variable orifice (1); Be contained in interior can the moving up and down in column type chamber (8) of lining (5) central authorities by the screw thread spool (7) of step motor control; Have two through hole on the wall of piston/cylinder (6), be respectively the oil-feed mouth of pipe (3) and the fuel-displaced mouth of pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96235152U CN2265437Y (en) | 1996-06-24 | 1996-06-24 | Step screw servo type electricity-liquid converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96235152U CN2265437Y (en) | 1996-06-24 | 1996-06-24 | Step screw servo type electricity-liquid converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265437Y true CN2265437Y (en) | 1997-10-22 |
Family
ID=33911298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96235152U Expired - Lifetime CN2265437Y (en) | 1996-06-24 | 1996-06-24 | Step screw servo type electricity-liquid converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265437Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458142C (en) * | 2004-08-13 | 2009-02-04 | 武汉事达电气股份有限公司 | Double-channel cross redundancy system for digital microcomputer governor of large-scale hydroturbine |
-
1996
- 1996-06-24 CN CN96235152U patent/CN2265437Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458142C (en) * | 2004-08-13 | 2009-02-04 | 武汉事达电气股份有限公司 | Double-channel cross redundancy system for digital microcomputer governor of large-scale hydroturbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204436910U (en) | A kind of asymmetric hydraulic efficiency servo-valve | |
| CN103062462B (en) | Incremental digital plug-in mounting overflow valve | |
| CN2265437Y (en) | Step screw servo type electricity-liquid converter | |
| CN2858028Y (en) | Continuous mono-filter-tubular hydraulic pressure filter for pipe line | |
| CN1033310A (en) | Linear actuator with hydaulic amplification | |
| CN1153871A (en) | Hydraulic system for large erecting equipment | |
| CN218542227U (en) | One-level double-control wave code communication intelligent production allocator for oil well separate-layer mining | |
| CN113565466B (en) | Electric control liquid drive type underground flow control valve | |
| CN201909078U (en) | Multifunctional dynamic flow rate balance valve | |
| CN1111259C (en) | Pilot-type overflow valve | |
| CN101153670B (en) | Automatic time-delaying water-saving tap | |
| CN110761964B (en) | Digital control proportional plunger variable pump and pump control system | |
| CN2864067Y (en) | Electrically controlled diameter changeable type stabilizer | |
| CN207246450U (en) | A kind of current-limiting apparatus of plumbing for building equipment robot control system(RCS) | |
| CN203113290U (en) | Novel flap valve control system | |
| CN2436705Y (en) | Hydraulic two-way plug-in installed valve | |
| CN208587356U (en) | A kind of pump control type electrohydraulic actuator system | |
| CN201857824U (en) | Hydraulic energy cipher bolt mechanism | |
| CN202165636U (en) | Full-balance rotary adjusting valve | |
| CN219492743U (en) | Throttle valve for hydraulic support liquid supply system of fully-mechanized mining face | |
| CN212775856U (en) | Small-sized integrated speed-changing main valve actuator | |
| CN2450424Y (en) | Leading overflow valve | |
| CN87212352U (en) | Electric-control one-way valve | |
| CN85108777A (en) | Self-starting throttle valve | |
| CN115929719A (en) | Digital large-flow direct mechanical feedback type two-stage electro-hydraulic directional valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |