CN105927453A - Adjusting device of mixed flow water turbine - Google Patents
Adjusting device of mixed flow water turbine Download PDFInfo
- Publication number
- CN105927453A CN105927453A CN201610420226.6A CN201610420226A CN105927453A CN 105927453 A CN105927453 A CN 105927453A CN 201610420226 A CN201610420226 A CN 201610420226A CN 105927453 A CN105927453 A CN 105927453A
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- Prior art keywords
- oil cylinder
- cylinder head
- ring
- servomotor
- piston rod
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Classifications
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- 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
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- 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
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1471—Guiding means other than in the end cap
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/602—Control system actuates through electrical actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/60—Control system actuates through
- F05B2270/604—Control system actuates through hydraulic actuators
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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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Actuator (AREA)
Abstract
The invention discloses an adjusting device of a mixed flow water turbine. The adjusting device comprises a control ring, supporting bases and servomotors. The three supporting bases are installed on the outer side wall of a top cover at equal interval. Each supporting base is symmetrically provided with two vertical supporting rods. Six evenly-distributed fixing rods are arranged on the top face of the control ring. The two ends of each servomotor are rotationally connected to the fixing rods and the supporting rods. Straight teeth are evenly arranged on the upper edge of the control ring. The three supporting bases are each provided with a limiting rod. One end of each limiting rod is provided with straight teeth matched with the straight teeth on the upper edge of the control ring. The straight tooth ends of the limiting rods are installed towards the center of the control ring. The limiting rods are provided with straight teeth installed in cooperation with gears which are installed in cooperation with servo motors. The limiting rods are provided with limiting sleeves which are fixedly installed on the supporting bases. According to the technical purpose of the adjusting device of the mixed flow water turbine, the limiting rods are arranged to lock the control ring, and the six servomotors are arranged and distributed on the top of the control ring.
Description
Technical field
The present invention relates to hydraulic turbine field, the adjusting apparatus of a kind of Francis turbine.
Background technology
The movable guide vane controlling water distributor of existing Francis turbine, mostly by realizing the control controlling ring, also has and directly directly acts on movable guide vane by servomotor and control.
But the existing hydraulic turbine controls being substantially of movable guide vane realizes by installing two servomotors by controlling ring, so impaired when servomotor or need repairing, allow for the control to movable guide vane extremely difficult, reliability is the highest.Existing Francis turbine is when being adjusted to correct position by movable guide vane, it is all to keep leading leaf divergence by the locking device being arranged on servomotor, generally locking device is merely able to lock at fully closed or maximum opening, so that the based model for load duration of servomotor, shorten the repair time of servomotor, and the probability of servomotor leakage of oil is increased.
Summary of the invention
Deficiency for above-mentioned existence, the technical purpose of the present invention be to provide a kind of be provided with gag lever post to control ring locking, there are 6 servomotors, servomotor is arranged in the adjusting apparatus of the Francis turbine controlling ring top, this adjusting apparatus locking is controlled ring by special gag lever post, make to control ring relatively reliable, can lock in many apertures, servomotor is arranged on the support seat being located at top cover, servomotor is taken up space little, 6 servomotors being provided with can facilitate servomotor overhaul, also makes adjusting apparatus relatively reliable.
The present invention is achieved through the following technical solutions:
The adjusting apparatus of the Francis turbine of the present invention, including: control ring, support seat and servomotor, it is arranged on water-turbine top cover for controlling the control ring of movable guide vane aperture, the lateral wall of top cover has been mounted equidistant 3 and has supported seat, two vertical support bars it are arranged with on each support seat, controlling top surface of ring and be provided with 6 uniform fixing bars, the two ends of servomotor are rotatably connected on fixing bar and support bar respectively；The upper edge controlling ring is uniformly provided with straight-tooth, it is equipped with gag lever post on three support seats, one end of gag lever post is provided with and controls the straight-tooth that coordinates along straight-tooth on ring, the straight-tooth end of gag lever post is installed towards the center controlling ring, gag lever post is provided with and coordinates the straight-tooth installed with gear, described gear coordinates installation with servomotor, and gag lever post is provided with stop collar, and stop collar is fixedly mounted on support seat.
In technique scheme, seat is supported by being mounted equidistant 3 in the lateral wall of top cover, and it is provided with support bar supporting on seat, between support bar and the fixing bar being arranged on control top surface of ring, servomotor is installed, controlled the rotation of ring by servomotor, thus control to lead leaf divergence, support seat is located on top cover, fixing bar is located at control top surface of ring, it is possible to reduce equipment occupation space；Controlling on ring along being provided with straight-tooth, coordinated with the straight-tooth controlled on ring by the straight-tooth on gag lever post, make to control ring to be locked, so that aperture when controlling the locking of ring is many, the movement of gag lever post is controlled by servomotor, compared to hydraulic control, Serve Motor Control is more precisely, maintenance cost is few, it is little to take up room, reaction is quicker；6 servomotors being provided with so that the regulation controlling ring is relatively reliable.
Further, described servomotor includes: A oil cylinder head, B oil cylinder head, cylinder barrel and piston rod, A oil cylinder head, the end face of B oil cylinder head are equipped with circular groove, a diameter of A oil cylinder head of circular groove with 0.8 times of B oil cylinder head external diameter, generally A oil cylinder head is equal with the external diameter of B oil cylinder head, coordinating between two circular grooves and be provided with cylinder barrel, A oil cylinder head, B oil cylinder head and cylinder barrel form plunger shaft；Being provided with dashpot bottom the circular groove of A oil cylinder head, the degree of depth of described dashpot is 0.8～1 times of the circular groove degree of depth, 0.2 times of a diameter of A oil cylinder head external diameter of dashpot；The bottom of piston rod is provided with piston through the centre bore of B oil cylinder head, and the bottom of piston is provided with a buffer head, and buffer head is cylindrical, and the external diameter of buffer head and dashpot difference in internal diameters are 1～8mm.
In technique scheme, by the diameter of circular groove being set to 0.8 times of A oil cylinder head and B oil cylinder head external diameter, make groove walls have enough intensity to fixedly mount with cylinder barrel, it is provided with dashpot bottom the circular groove of A oil cylinder head, it is provided with a buffer head in the bottom of piston, at piston quickly in A oil cylinder head moving process, it is to avoid piston and A oil cylinder head produce strong shock, the external diameter of buffer head and dashpot difference in internal diameters are 1～8mm can to determine according to the size that servomotor is actual；The degree of depth of dashpot is 0.8～1 times of depth of groove, 0.2 times of a diameter of A oil cylinder head external diameter of dashpot so that dashpot has certain volume storing hydraulic oil, and dashpot is too big, will affect the intensity of A oil cylinder head.
Further, the material that described cylinder barrel is is titanium alloy；The cylindrical wall two ends of piston are provided with the guide ring of titanium alloy material, are provided with trapezoidal seal groove in the middle part of the cylindrical wall of piston, and in trapezoidal seal groove, peace coordinates equipped with ladder-shaped sealing ring.
Further, outside described piston rod, it is arranged with the sleeve of titanium alloy material matter, between piston rod and sleeve, is provided with sealing ring.
In technique scheme, by the material of cylinder barrel is set to titanium alloy, titanium alloy have corrosion-resistant, intensity is high, heat-resisting with low temperature properties is good, temperature influence is little, toughness is high, the cylinder barrel intensity that titanium alloy is made is higher, more durable, better reliability, and abrasion that the titanium alloy with very high rigidity enables to cylinder barrel is the least, outside piston rod, it is arranged with the sleeve of titanium alloy so that the better tightness of cylinder barrel and piston, sleeve is less with the abrasion of piston, and frictional force is lower；Piston rod is sealed by the sealing ring being provided with between piston rod and sleeve with sleeve.
Further, described support seat is " L " type, supports seat and includes vertical arm and horizontal arm, and vertical arm is arranged on the side of top cover, and horizontal arm is arranged on the top of vertical arm, and the both sides of vertical arm are provided with bracing piece, is provided with bracing piece between vertical arm and horizontal arm.
In technique scheme, by supporting " L " type that seat is set to include vertical arm with horizontal arm, vertical arm is arranged on the side of top cover, so that it is less to support volume shared by seat, space availability ratio is bigger.The bracing piece being provided with ensure that support seat has enough intensity.
Further, the inwall of described B oil cylinder head centre bore is provided with two gathering sills and seal groove, two gathering sills are respectively arranged on the both sides of B oil cylinder head centre bore, seal groove it is provided with between gathering sill, being provided with the support ring of titanium alloy material in gathering sill, the end face of B oil cylinder head is provided with and coordinates the dust cap installed with piston rod.
In technique scheme, by being provided with two gathering sills in B oil cylinder head centre bore, by two gathering sills being located at the both sides of B oil cylinder centre bore, the support ring of titanium alloy material it is provided with so that servomotor can bear bigger radial force, and can solve the problem that in the problem that piston rod is often pulled in gathering sill, improve the reliability of servomotor, the radial displacement of piston rod is less, also improves the sealing of servomotor simultaneously so that servomotor leakage of oil is less；Dust cap can carry out effective dust-separation to servomotor.
Further, A oil cylinder head, B oil cylinder head circular groove bottom be provided with the through hole connected respectively with A oil cylinder head, B oil cylinder rostral wall, through hole be shaped as " L " type, a sedimentation tank it is provided with bottom the longitudinal hole of through hole, the bottom of described sedimentation tank or the inwall of dashpot are provided with the shortest setting of distance of powerful permanent Magnet, the permanent magnetic iron that dashpot inwall is provided with and sedimentation tank.
In technique scheme, by A oil cylinder head, B oil cylinder head circular groove bottom be provided with " L " the type through hole connected respectively with A oil cylinder head, B oil cylinder rostral wall, through hole can install oil pipe, control the turnover of hydraulic oil, thus control the position of piston rod to regulate and to control the movable guide vane that ring is connected；By being provided with a sedimentation tank at through hole, and cooperation is provided with powerful permanent Magnet, the metal flowed into from hydraulic oil is inhaled in sedimentation tank, thus avoid welding slag or other iron filings to enter in cylinder body, thus cylinder body is caused damage, improve the reliability of servomotor, and it is provided with the servomotor of titanium alloy, even if there being iron filings to enter in cylinder body, the high rigidity of titanium alloy, do not result in the biggest damage of cylinder body yet.
Further, the outer end of piston rod coordinates with the sidewall of B oil cylinder head and is provided with two set infrared range-measurement systems, A oil cylinder head, the through hole of B oil cylinder head are provided with A branched hole and B branched hole, A branched hole and B branched hole are provided with A pressure transducer and B pressure transducer, infrared range-measurement system, A pressure transducer, B pressure transducer and servomotor are connected with master controller respectively, and master controller is also connected with light-emitting diode display and alarm.
In technique scheme, the infrared range-measurement system being provided with can measure the distance that piston rod is flexible, by the distance that piston rod is flexible, be can be calculated by master controller and lead leaf divergence, compared to prior art, can more precisely control and lead leaf divergence, master controller sends aperture numerical value to light-emitting diode display and shows in light-emitting diode display；Master controller is passed to the pressure signal that sensor is recorded by B pressure transducer by the A pressure transducer being provided with, after master controller receives the pressure signal of A pressure transducer/B pressure transducer, master controller judges that pressure is the most normal, if P is ＞ 0.9P, P is the pressure value recorded, and P is servomotor rated pressure, and master controller judges that hydraulic system pressure is abnormal, master controller sends pressure value to light-emitting diode display and shows in the display, sends warning yellow to alarm；If P is ＞ P, master controller judges that hydraulic system pressure is abnormal, and master controller sends pressure value to light-emitting diode display and shows in the display, sends warning red to alarm；P≤0.9P, master controller judges that hydraulic system pressure is normal, and master controller sends pressure value to light-emitting diode display and shows in the display such that it is able to the pressure value in real-time display system, and can intelligent monitoring；After guide vane opening is adjusted, master controller sends locking signal to servomotor, servomotor rotates, so that gag lever post is shifted to control ring, control ring is blocked by gag lever post, thus ring locking will be controlled, so that stator keeps required aperture, when needs change guide vane opening, master controller thinks that servomotor sends the order that unlocks, and servomotor rotates, gag lever post is made to leave control ring, control aperture needed for ring rotates thus adjusts, lock control ring by gag lever post so that it is relatively reliable that locking controls ring.
The invention has the beneficial effects as follows:
1, by 3 support seats have been mounted equidistant in the lateral wall of top cover, and it is provided with support bar supporting on seat, between support bar and the fixing bar being arranged on control top surface of ring, servomotor is installed, the rotation of ring is controlled by servomotor, thus control to lead leaf divergence, support seat is located on top cover, fixing bar is located at control top surface of ring, it is possible to reduce equipment occupation space；Controlling on ring along being provided with straight-tooth, coordinated with the straight-tooth controlled on ring by the straight-tooth on gag lever post, make to control ring to be locked, so that aperture when controlling the locking of ring is many, the movement of gag lever post is controlled by servomotor, compared to hydraulic control, Serve Motor Control is more precisely, maintenance cost is few, it is little to take up room, reaction is quicker；6 servomotors being provided with so that the regulation controlling ring is relatively reliable.
2, by the diameter of circular groove being set to 0.8 times of A oil cylinder head and B oil cylinder head external diameter, make groove walls have enough intensity to fixedly mount with cylinder barrel, it is provided with dashpot bottom the circular groove of A oil cylinder head, it is provided with a buffer head in the bottom of piston, at piston quickly in A oil cylinder head moving process, avoiding piston and A oil cylinder head to produce strong shock, the external diameter of buffer head and dashpot difference in internal diameters are 1～8mm can to determine according to the size that servomotor is actual；The degree of depth of dashpot is 0.8～1 times of depth of groove, 0.2 times of a diameter of A oil cylinder head external diameter of dashpot so that dashpot has certain volume storing hydraulic oil, and dashpot is too big, will affect the intensity of A oil cylinder head.
3, by the material of cylinder barrel is set to titanium alloy, titanium alloy have corrosion-resistant, intensity is high, heat-resisting with low temperature properties is good, temperature influence is little, toughness is high, the cylinder barrel intensity that titanium alloy is made is higher, more durable, better reliability, and abrasion that the titanium alloy with very high rigidity enables to cylinder barrel is the least, the sleeve of titanium alloy it is arranged with outside piston rod, making the better tightness of cylinder barrel and piston, sleeve is less with the abrasion of piston, and frictional force is lower；The support ring of titanium alloy material it is provided with in gathering sill, the sleeve of titanium alloy material matter it is arranged with so that support ring and the sleeve effect of piston rod so that the overcoat of piston rod is the firmest wear-resisting outside piston rod, compared to prior art, the physical life of the servomotor of this structure at least improves 50%.
4, by A oil cylinder head, B oil cylinder head circular groove bottom be provided with " L " the type through hole connected respectively with A oil cylinder head, B oil cylinder rostral wall, through hole can install oil pipe, control the turnover of hydraulic oil, thus control the position of piston rod to regulate and to control the movable guide vane that ring is connected；By being provided with a sedimentation tank at through hole, and cooperation is provided with powerful permanent Magnet, the metal flowed into from hydraulic oil is inhaled in sedimentation tank, thus avoid welding slag or other iron filings to enter in cylinder body, thus cylinder body is caused damage, improve the reliability of servomotor, and it is provided with the servomotor of titanium alloy, even if there being iron filings to enter in cylinder body, the high rigidity of titanium alloy, do not result in the biggest damage of cylinder body yet.
Accompanying drawing explanation
Fig. 1 is the top view of the present invention；
Fig. 2 is the partial schematic diagram of the present invention；
Fig. 3 is the servomotor structural representation of the present invention；
Fig. 4 is the servomotor structural representation of the present invention.
Labelling in figure: 1 for control ring, 2 for support seat, 3 be servomotor, 3.1 be A oil cylinder head, 3.2 be B oil cylinder head, 3.3 be cylinder barrel, 3.4 be piston, 3.5 be guide ring, 3.6 be trapezoidal seal groove, 3.7 be gathering sill, 3.8 be seal groove, 3.9 be dashpot, 3.10 be piston rod, 3.11 be buffer head, 3.12 be sleeve, 3.13 be through hole, 3.14 be sedimentation tank, 4 be fixing bar, 5 be top cover, 6 be support bar, 7 be gag lever post.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one:
nullSuch as Fig. 1、The adjusting apparatus of the Francis turbine shown in Fig. 2 and Fig. 3，Including controlling ring 1、Support seat 2、Servomotor 3、A oil cylinder head 3.1、B oil cylinder head 3.2、Cylinder barrel 3.3、Piston 3.4、Guide ring 3.5、Trapezoidal seal groove 3.6、Gathering sill 3.7、Seal groove 3.8、Dashpot 3.9、Piston rod 3.10、Buffer head 3.11、Sleeve 3.12、Through hole 3.13、Sedimentation tank 3.14、Fixing bar 4、Top cover 5、Support bar 6 and gag lever post 7，It is arranged on water-turbine top cover 5 for controlling the control ring 1 of movable guide vane aperture，The lateral wall of top cover 5 has been mounted equidistant 3 and has supported seat 2，Two vertical support bars 6 it are arranged with on each support seat 2，Control ring 1 end face and be provided with 6 uniform fixing bars 4，The two ends of servomotor 3 are rotatably connected on fixing bar 4 and support bar 6 respectively；The upper edge controlling ring 1 is uniformly provided with straight-tooth, it is equipped with gag lever post 7 on three support seats 2, one end of gag lever post 7 is provided with and controls the straight-tooth that coordinates along straight-tooth on ring 1, the straight-tooth end of gag lever post 7 is installed towards the center controlling ring 1, gag lever post 7 is provided with and coordinates the straight-tooth installed with gear, described gear coordinates installation with servomotor, gag lever post 7 is provided with stop collar 8, stop collar 8 is fixedly mounted on support seat 2, micromatic setting is further respectively had on gag lever post 7 and stop collar 8, this micromatic setting can adjust gag lever post 7 and the level angle of stop collar 8, so that gag lever post 7 can be spacing to controlling ring 1 smoothly.
Servomotor 3 includes: A oil cylinder head 3.1, B oil cylinder head 3.2, cylinder barrel 3.3 and piston rod 3.10, A oil cylinder head 3.1, the end face of B oil cylinder head 3.2 are equipped with circular groove, a diameter of A oil cylinder head 3.1 of circular groove with 0.8 times of B oil cylinder head 3.2 external diameter, being provided with cylinder barrel 3.3 between two circular grooves, A oil cylinder head 3.1, B oil cylinder head 3.2 and cylinder barrel 3.3 form plunger shaft；Dashpot 3.9 it is provided with bottom the circular groove of A oil cylinder head 3.1, the degree of depth is the circular groove degree of depth 0.8 times of described dashpot 3.9,0.2 times of a diameter of A oil cylinder head 3.1 external diameter of dashpot 3.9；The bottom of piston rod 3.10 is provided with piston 3.4 through the centre bore of B oil cylinder head 3.2, and the bottom of piston 3.4 is provided with a buffer head 3.11, and buffer head 3.11 is cylindrical；The material that described cylinder barrel 3.3 is is titanium alloy；The cylindrical wall two ends of piston 3.4 are provided with the guide ring 3.5 of titanium alloy material, are provided with trapezoidal seal groove 3.6 in the middle part of the cylindrical wall of piston 3.4, and in trapezoidal seal groove 3.6, peace coordinates equipped with ladder-shaped sealing ring；It is arranged with the sleeve 3.12 of titanium alloy material matter outside described piston rod 3.10, between piston rod 3.10 and sleeve 3.12, is provided with sealing ring；Described support seat 2 is " L " type, supports seat 2 and includes vertical arm and horizontal arm, and vertical arm is arranged on the side of top cover 5, and horizontal arm is arranged on the top of vertical arm, and the both sides of vertical arm are provided with bracing piece, is provided with bracing piece between vertical arm and horizontal arm；The inwall of described B oil cylinder head 3.2 centre bore is provided with two gathering sills 3.7 and seal groove 3.8, two gathering sills 3.7 are respectively arranged on the both sides of B oil cylinder head 3.2 centre bore, seal groove 3.8 it is provided with between gathering sill 3.7, being provided with the support ring of titanium alloy material in gathering sill 3.7, the end face of B oil cylinder head 3.2 is provided with and coordinates the dust cap installed with piston rod 3.10；A oil cylinder head 3.1, B oil cylinder head 3.2 circular groove bottom be provided with the through hole connected respectively with A oil cylinder head 3.1, B oil cylinder head 3.2 sidewall, through hole be shaped as " L " type, being provided with a sedimentation tank bottom the longitudinal hole of through hole, the bottom of described sedimentation tank is provided with powerful permanent Magnet；The outer end of piston rod 3.10 coordinates with the sidewall of B oil cylinder head 3.2 and is provided with two set infrared range-measurement systems, A oil cylinder head 3.1, the through hole of B oil cylinder head 3.2 are provided with A branched hole and B branched hole, A branched hole and B branched hole are provided with A pressure transducer and B pressure transducer, infrared range-measurement system, A pressure transducer, B pressure transducer and servomotor are connected with master controller respectively, and master controller is also connected with light-emitting diode display and alarm.
The infrared range-measurement system being provided with can measure the flexible distance of piston rod 3.10, by the flexible distance of piston rod 3.10, be can be calculated by master controller and lead leaf divergence, compared to prior art, can more precisely control and lead leaf divergence, master controller sends aperture numerical value to light-emitting diode display and shows in light-emitting diode display；Master controller is passed to the pressure signal that sensor is recorded by B pressure transducer by the A pressure transducer being provided with, after master controller receives the pressure signal of A pressure transducer/B pressure transducer, master controller judges that pressure is the most normal, if P is ＞ 0.9P, P is the pressure value recorded, and P is servomotor rated pressure, and master controller judges that hydraulic system pressure is abnormal, master controller sends pressure value to light-emitting diode display and shows in the display, sends warning yellow to alarm；If P is ＞ P, master controller judges that hydraulic system pressure is abnormal, and master controller sends pressure value to light-emitting diode display and shows in the display, sends warning red to alarm；P≤0.9P, master controller judges that hydraulic system pressure is normal, and master controller sends pressure value to light-emitting diode display and shows in the display such that it is able to the pressure value in real-time display system, and can intelligent monitoring；After guide vane opening is adjusted, master controller sends locking signal to servomotor, servomotor rotates, so that gag lever post is shifted to control ring, control ring is blocked by gag lever post, thus ring locking will be controlled, so that stator keeps required aperture, when needs change guide vane opening, master controller thinks that servomotor sends the order that unlocks, and servomotor rotates, gag lever post is made to leave control ring, control aperture needed for ring rotates thus adjusts, lock control ring by gag lever post so that it is relatively reliable that locking controls ring.
Embodiment two:
nullSuch as Fig. 1、The adjusting apparatus of the Francis turbine shown in Fig. 2 and Fig. 4，Including controlling ring 1、Support seat 2、Servomotor 3、A oil cylinder head 3.1、B oil cylinder head 3.2、Cylinder barrel 3.3、Piston 3.4、Guide ring 3.5、Trapezoidal seal groove 3.6、Gathering sill 3.7、Seal groove 3.8、Dashpot 3.9、Piston rod 3.10、Buffer head 3.11、Sleeve 3.12、Through hole 3.13、Sedimentation tank 3.14、Fixing bar 4、Top cover 5、Support bar 6 and gag lever post 7，It is arranged on water-turbine top cover 5 for controlling the control ring 1 of movable guide vane aperture，The lateral wall of top cover 5 has been mounted equidistant 3 and has supported seat 2，Two vertical support bars 6 it are arranged with on each support seat 2，Control ring 1 end face and be provided with 6 uniform fixing bars 4，The two ends of servomotor 3 are rotatably connected on fixing bar 4 and support bar 6 respectively；The upper edge controlling ring 1 is uniformly provided with straight-tooth, it is equipped with gag lever post 7 on three support seats 2, one end of gag lever post 7 is provided with and controls the straight-tooth that coordinates along straight-tooth on ring 1, the straight-tooth end of gag lever post 7 is installed towards the center controlling ring 1, gag lever post 7 is provided with and coordinates the straight-tooth installed with gear, described gear coordinates installation with servomotor, gag lever post 7 is provided with stop collar 8, stop collar 8 is fixedly mounted on support seat 2, micromatic setting is further respectively had on upper limit bar 7 and stop collar 8, this micromatic setting can adjust gag lever post 7 and the level angle of stop collar 8, so that gag lever post 7 can be spacing to controlling ring 1 smoothly.
Servomotor 3 includes: A oil cylinder head 3.1, B oil cylinder head 3.2, cylinder barrel 3.3 and piston rod 3.10, A oil cylinder head 3.1, the end face of B oil cylinder head 3.2 are equipped with circular groove, a diameter of A oil cylinder head 3.1 of circular groove with 0.8 times of B oil cylinder head 3.2 external diameter, being provided with cylinder barrel 3.3 between two circular grooves, A oil cylinder head 3.1, B oil cylinder head 3.2 and cylinder barrel 3.3 form plunger shaft；Dashpot 3.9 it is provided with bottom the circular groove of A oil cylinder head 3.1, the degree of depth is the circular groove degree of depth 0.8 times of described dashpot 3.9,0.2 times of a diameter of A oil cylinder head 3.1 external diameter of dashpot 3.9；The bottom of piston rod 3.10 is provided with piston 3.4 through the centre bore of B oil cylinder head 3.2, and the bottom of piston 3.4 is provided with a buffer head 3.11, and buffer head 3.11 is cylindrical；The material that described cylinder barrel 3.3 is is titanium alloy；The cylindrical wall two ends of piston 3.4 are provided with the guide ring 3.5 of titanium alloy material, are provided with trapezoidal seal groove 3.6 in the middle part of the cylindrical wall of piston 3.4, and in trapezoidal seal groove 3.6, peace coordinates equipped with ladder-shaped sealing ring；It is arranged with the sleeve 3.12 of titanium alloy material matter outside described piston rod 3.10, between piston rod 3.10 and sleeve 3.12, is provided with sealing ring；Described support seat 2 is " L " type, supports seat 2 and includes vertical arm and horizontal arm, and vertical arm is arranged on the side of top cover 5, and horizontal arm is arranged on the top of vertical arm, and the both sides of vertical arm are provided with bracing piece, is provided with bracing piece between vertical arm and horizontal arm；The inwall of described B oil cylinder head 3.2 centre bore is provided with two gathering sills 3.7 and seal groove 3.8, two gathering sills 3.7 are respectively arranged on the both sides of B oil cylinder head 3.2 centre bore, seal groove 3.8 it is provided with between gathering sill 3.7, being provided with the support ring of titanium alloy material in gathering sill 3.7, the end face of B oil cylinder head 3.2 is provided with and coordinates the dust cap installed with piston rod 3.10；A oil cylinder head 3.1, B oil cylinder head 3.2 circular groove bottom be provided with the through hole connected respectively with A oil cylinder head 3.1, B oil cylinder head 3.2 sidewall, through hole be shaped as " L " type, a sedimentation tank it is provided with bottom the longitudinal hole of through hole, the inwall of dashpot 3.9 offers a rectangular channel, the shortest setting of distance of powerful permanent Magnet, the permanent magnetic iron that dashpot (3.9) inwall is provided with and sedimentation tank it is provided with in rectangular channel.
The outer end of piston rod 3.10 coordinates with the sidewall of B oil cylinder head 3.2 and is provided with two set infrared range-measurement systems, A oil cylinder head 3.1, the through hole of B oil cylinder head 3.2 are provided with A branched hole and B branched hole, A branched hole and B branched hole are provided with A pressure transducer and B pressure transducer, infrared range-measurement system, A pressure transducer, B pressure transducer and servomotor are connected with master controller respectively, and master controller is also connected with light-emitting diode display and alarm.
The infrared range-measurement system being provided with can measure the flexible distance of piston rod 3.10, by the flexible distance of piston rod 3.10, be can be calculated by master controller and lead leaf divergence, compared to prior art, can more precisely control and lead leaf divergence, master controller sends aperture numerical value to light-emitting diode display and shows in light-emitting diode display；Master controller is passed to the pressure signal that sensor is recorded by B pressure transducer by the A pressure transducer being provided with, after master controller receives the pressure signal of A pressure transducer/B pressure transducer, master controller judges that pressure is the most normal, if P is ＞ 0.9P, P is the pressure value recorded, and P is servomotor rated pressure, and master controller judges that hydraulic system pressure is abnormal, master controller sends pressure value to light-emitting diode display and shows in the display, sends warning yellow to alarm；If P is ＞ P, master controller judges that hydraulic system pressure is abnormal, and master controller sends pressure value to light-emitting diode display and shows in the display, sends warning red to alarm；P≤0.9P, master controller judges that hydraulic system pressure is normal, and master controller sends pressure value to light-emitting diode display and shows in the display such that it is able to the pressure value in real-time display system, and can intelligent monitoring；After guide vane opening is adjusted, master controller sends locking signal to servomotor, servomotor rotates, so that gag lever post is shifted to control ring, control ring is blocked by gag lever post, thus ring locking will be controlled, so that stator keeps required aperture, when needs change guide vane opening, master controller thinks that servomotor sends the order that unlocks, and servomotor rotates, gag lever post is made to leave control ring, control aperture needed for ring rotates thus adjusts, lock control ring by gag lever post so that it is relatively reliable that locking controls ring.
Wei the Ti-6Al-4V or Ti-5Al-2.5Sn of the titanium alloy in embodiment one and embodiment two.
It is mounted equidistant 3 in the lateral wall of top cover 5 and supports seat 2, and it is provided with support bar 6 supporting on seat 2, between support bar 6 and the fixing bar 4 being arranged on control ring 1 end face, servomotor 3 is installed, the rotation of ring 1 is controlled by servomotor 3, thus control to lead leaf divergence, support seat 2 is located on top cover 5, fixing bar 4 is located at control ring 1 end face, it is possible to reduce equipment occupation space；Controlling on ring 1 along being provided with straight-tooth, coordinated with the straight-tooth controlled on ring 1 by the straight-tooth on gag lever post 7, make to control ring 1 to be locked, so that aperture when controlling the locking of ring 1 is many, the movement of gag lever post 7 is controlled by servomotor, compared to hydraulic control, Serve Motor Control is more precisely, maintenance cost is few, it is little to take up room, reaction is quicker；6 servomotors 3 being provided with so that the regulation controlling ring 2 is relatively reliable.
Claims (8)
1. the adjusting apparatus of a Francis turbine, it is characterized in that, including: control ring (1), support seat (2) and servomotor (3), it is arranged on water-turbine top cover (5) for controlling the control ring (1) of movable guide vane aperture, the lateral wall of top cover (5) has been mounted equidistant 3 and has supported seat (2), two vertical support bars (6) it are arranged with on each support seat (2), controlling ring (1) end face and be provided with 6 uniform fixing bars (4), the two ends of servomotor (3) are rotatably connected on fixing bar (4) and support bar (6) respectively；The upper edge controlling ring (1) is uniformly provided with straight-tooth, it is equipped with gag lever post (7) on three supports seat (2), one end of gag lever post (7) is provided with and controls the straight-tooth that coordinates along straight-tooth on ring (1), the straight-tooth end of gag lever post (7) is installed towards the center controlling ring (1), gag lever post (7) is provided with and coordinates the straight-tooth installed with gear, described gear coordinates installation, gag lever post (7) to be provided with stop collar (8) with servomotor, and stop collar (8) is fixedly mounted in support seat (2).
2. the adjusting apparatus of Francis turbine as claimed in claim 1, it is characterized in that, described servomotor (3) including: A oil cylinder head (3.1), B oil cylinder head (3.2), cylinder barrel (3.3) and piston rod (3.10), A oil cylinder head (3.1), the end face of B oil cylinder head (3.2) are equipped with circular groove, a diameter of A oil cylinder head (3.1) of circular groove with 0.8 times of B oil cylinder head (3.2) external diameter, cylinder barrel (3.3), A oil cylinder head (3.1), B oil cylinder head (3.2) and cylinder barrel (3.3) are installed between two circular grooves and form plunger shaft；Dashpot (3.9) it is provided with bottom the circular groove of A oil cylinder head (3.1), the degree of depth is the circular groove degree of depth 0.8～1 times of described dashpot (3.9), 0.2 times of a diameter of A oil cylinder head (3.1) external diameter of dashpot (3.9)；The bottom of piston rod (3.10) is provided with piston (3.4) through the centre bore of B oil cylinder head (3.2), and the bottom of piston (3.4) is provided with a buffer head (3.11), and buffer head (3.11) is cylindrical.
3. the adjusting apparatus of Francis turbine as claimed in claim 1, it is characterised in that the material that described cylinder barrel (3.3) is is titanium alloy；The cylindrical wall two ends of piston (3.4) are provided with the guide ring (3.5) of titanium alloy material, are provided with trapezoidal seal groove (3.6) in the middle part of the cylindrical wall of piston (3.4), and in trapezoidal seal groove (3.6), peace coordinates equipped with ladder-shaped sealing ring.
4. the adjusting apparatus of Francis turbine as claimed in claim 1, it is characterised in that be arranged with the sleeve (3.12) of titanium alloy material matter outside described piston rod (3.10), be provided with sealing ring between piston rod (3.10) and sleeve (3.12).
5. the adjusting apparatus of Francis turbine as claimed in claim 1, it is characterized in that, described support seat (2) is " L " type, support seat (2) and include vertical arm and horizontal arm, vertical arm is arranged on the side of top cover (5), horizontal arm is arranged on the top of vertical arm, and the both sides of vertical arm are provided with bracing piece, is provided with bracing piece between vertical arm and horizontal arm.
6. the adjusting apparatus of Francis turbine as claimed in claim 2, it is characterized in that, the inwall of described B oil cylinder head (3.2) centre bore is provided with two gathering sills (3.7) and seal groove (3.8), two gathering sills (3.7) are respectively arranged on the both sides of B oil cylinder head (3.2) centre bore, seal groove (3.8) it is provided with between gathering sill (3.7), being provided with the support ring of titanium alloy material in gathering sill (3.7), the end face of B oil cylinder head (3.2) is provided with and coordinates the dust cap installed with piston rod (3.10).
7. the adjusting apparatus of Francis turbine as claimed in claim 2, it is characterized in that, A oil cylinder head (3.1), B oil cylinder head (3.2) circular groove bottom be provided with the through hole connected respectively with A oil cylinder head (3.1), B oil cylinder head (3.2) sidewall, through hole be shaped as " L " type, a sedimentation tank it is provided with bottom the longitudinal hole of through hole, the inwall of the bottom of described sedimentation tank or dashpot (3.9) is provided with the shortest setting of distance of powerful permanent Magnet, the permanent magnetic iron that dashpot (3.9) inwall is provided with and sedimentation tank.
8. such as the control system of adjusting apparatus of Francis turbine of claim 1-6 any one, it is characterized in that, the outer end of piston rod (3.10) coordinates with the sidewall of B oil cylinder head (3.2) and is provided with two set infrared range-measurement systems, A oil cylinder head (3.1), the through hole of B oil cylinder head (3.2) are provided with A branched hole and B branched hole, A branched hole and B branched hole are provided with A pressure transducer and B pressure transducer, infrared range-measurement system, A pressure transducer, B pressure transducer and servomotor are connected with master controller respectively, and master controller is also connected with light-emitting diode display and alarm.
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| CN201610420226.6A CN105927453B (en) | 2016-06-16 | 2016-06-16 | A kind of adjustment device of Francis turbine |
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| CN201610420226.6A CN105927453B (en) | 2016-06-16 | 2016-06-16 | A kind of adjustment device of Francis turbine |
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| JPH08270538A (en) * | 1995-03-31 | 1996-10-15 | Hitachi Ltd | Water flow control device for water turbine |
| US7071578B1 (en) * | 2002-01-10 | 2006-07-04 | Mitsubishi Heavy Industries, Ltd. | Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof |
| CN103511173A (en) * | 2013-09-24 | 2014-01-15 | 东方电气集团东方电机有限公司 | Water turbine provided with four servomotors on top cover |
| CN204003235U (en) * | 2014-07-03 | 2014-12-10 | 杭州三汇水电设备有限公司 | New type hydraulic turbine stator shutoff device |
| CN206054161U (en) * | 2016-06-16 | 2017-03-29 | 成都德善能科技有限公司 | A kind of adjusting apparatus and its control system of Francis turbine |
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2016
- 2016-06-16 CN CN201610420226.6A patent/CN105927453B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08270538A (en) * | 1995-03-31 | 1996-10-15 | Hitachi Ltd | Water flow control device for water turbine |
| US7071578B1 (en) * | 2002-01-10 | 2006-07-04 | Mitsubishi Heavy Industries, Ltd. | Wind turbine provided with a controller for adjusting active annular plane area and the operating method thereof |
| CN103511173A (en) * | 2013-09-24 | 2014-01-15 | 东方电气集团东方电机有限公司 | Water turbine provided with four servomotors on top cover |
| CN204003235U (en) * | 2014-07-03 | 2014-12-10 | 杭州三汇水电设备有限公司 | New type hydraulic turbine stator shutoff device |
| CN206054161U (en) * | 2016-06-16 | 2017-03-29 | 成都德善能科技有限公司 | A kind of adjusting apparatus and its control system of Francis turbine |
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