CN106812558B - A kind of revolution speed control device of steam turbines - Google Patents
A kind of revolution speed control device of steam turbines Download PDFInfo
- Publication number
- CN106812558B CN106812558B CN201710007550.XA CN201710007550A CN106812558B CN 106812558 B CN106812558 B CN 106812558B CN 201710007550 A CN201710007550 A CN 201710007550A CN 106812558 B CN106812558 B CN 106812558B
- Authority
- CN
- China
- Prior art keywords
- valve
- connecting rod
- rod
- speed control
- control device
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- 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
-
- 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
Abstract
The invention discloses a kind of revolution speed control devices of steam turbines, belong to turbine field.The revolution speed control device of the steam turbines, described device include：Governor, first connecting rod, regulating valve, reversal valve, two-way cylinder, curved bar, second connecting rod and third connecting rod, the governor and the regulating valve are located at the both sides of the first connecting rod.The power for driving adjusting spool movement that the output shaft of governor is transmitted by first connecting rod is more than adjusting spool and adjusts the frictional force between valve pocket, is driven when to efficiently solve the problems, such as that governor is only driven by first connecting rod hypodynamic.
Description
Technical field
The present invention relates to turbine field, more particularly to a kind of revolution speed control device of steam turbines.
Background technology
Steam turbines refers to a kind of prime mover for the mechanical energy that the thermal energy of steam is directly changed into rotation, is usually configured
There is revolution speed control device to control the rotating speed of steam turbines.
Existing revolution speed control device includes regulating valve, connecting rod and governor, and governor controls to adjust spool by connecting rod
Opening size to realize that adjusting is passed through the steam flow in steam turbines, and then realizes the rotating speed control to steam turbines
System.
In the implementation of the present invention, the inventor finds that the existing technology has at least the following problems：
In use due to regulating valve, spool face is easy to happen oxidation and corrosion, so as to cause spool and tune
Frictional force between section valve deck gradually increases, with the extension for using process, the drive of the governor of existing revolution speed control device
Power can gradually be less than adjusting spool and adjust the frictional force between valve pocket, and regulating valve can not be driven by eventually resulting in governor
Core, and then prevent revolution speed control device from speed governing.
Invention content
Driving force in order to solve governor in the prior art is less than adjusting spool and adjusts the frictional force between valve pocket
Problem, an embodiment of the present invention provides a kind of revolution speed control devices of steam turbines.The technical solution is as follows：
An embodiment of the present invention provides a kind of revolution speed control device of steam turbines, the rotating speed controls of the steam turbines
Device processed includes：Governor, first connecting rod and regulating valve, which is characterized in that the regulating valve includes：Valve body, adjusting spool and
First valve rod, the adjusting spool are located in the valve body, and the first end of first valve rod is mounted in the adjusting spool,
The second end of first valve rod stretches out the valve body.
The revolution speed control device of the steam turbines further includes：Reversal valve, two-way cylinder, curved bar and second connecting rod and
Three-link, the governor and the regulating valve are being located at institute on the direction of the length direction of the first connecting rod
State the both sides of first connecting rod.
The two-way cylinder includes cylinder body, piston, First piston bar and second piston bar, and the piston is arranged in the cylinder
In vivo, and by the cylinder body it is divided into the first rod chamber and the second rod chamber, the First piston bar is located at first rod chamber
It is interior, and the first end of the First piston bar is fixed on the piston, the second end of the First piston bar stretches out the cylinder
Body is simultaneously sequentially connected by the first end of the third connecting rod and the first connecting rod, and the second piston bar is located at described second
In rod chamber, the first end of the second piston bar is fixed on the piston, and the second end of the second piston bar stretches out institute
Oil cylinder cover is stated to be fixedly connected with the second end of first valve rod.
The reversal valve includes spool, P mouthfuls of oil inlet, fuel-displaced A mouthfuls and B mouthfuls fuel-displaced, the spool and the first connecting rod
Middle part is rotatablely connected, and described fuel-displaced A mouthfuls is connected to first rod chamber, and described fuel-displaced B mouthfuls is connected to second rod chamber.
The first end of the curved bar is mounted on the output shaft of the governor, the second end of the curved bar and described second
The first end of connecting rod is rotatablely connected, and the second end of the second connecting rod and the second end of the first connecting rod are rotatablely connected；It is described
The second end of the first end of third connecting rod and the First piston bar is rotatablely connected, the second end of the third connecting rod and described the
The first end of one connecting rod is rotatablely connected, and the rotation axis of the second end of the second connecting rod and the second end of the first connecting rod
The of the first end of line, the pivot center of the spool and the first connecting rod and the third connecting rod and the First piston bar
The pivot center at two ends is arranged in parallel.
Specifically, the revolution speed control device of the steam turbines further includes：First oscillating bearing and second joint bearing,
First oscillating bearing and the second joint bearing are separately mounted to the both ends of the second connecting rod, and first joint
The second end of bearing and the curved bar is rotatablely connected, and the second end of the second joint bearing and the first connecting rod, which is fixed, to be connected
It connects.
Specifically, the revolution speed control device of the steam turbines further includes two-way cylinder holder, the two-way cylinder branch
One end of frame is fixedly mounted on the oil cylinder cover, and the other end of the two-way cylinder holder is fixedly mounted on described first and adjusts
On valve deck, and the second end of the second piston bar and the second end of first valve rod connect in the two-way cylinder holder
It connects.
Specifically, the regulating valve further includes：First locking nut and the first flexible seals correspond to institute on the valve body
The position for stating the first valve rod is provided with the first groove, and first flexible seals are located in first groove and around described
First valve rod arranges that first locking nut is set on first valve rod and is installed in first groove, described
First flexible seals are pressed on first valve rod by the first locking nut.
Specifically, the regulating valve further includes the second valve rod, and the first end of second valve rod is mounted on the regulating valve
On core, the second end of second valve rod stretches out described second and adjusts valve deck.
Further, the regulating valve further includes：Second locking nut and the second flexible seals, second regulating valve
The position for covering corresponding second valve rod is provided with the second groove, and second flexible seals are located in second groove
And arranged around second valve rod, second locking nut is set on second valve rod and to be installed on described second recessed
In slot, second flexible seals are pressed on second valve rod by second locking nut.
Further, the revolution speed control device of the steam turbines further includes third oscillating bearing, the third joint
Bearing is mounted in the second end of the First piston bar, and the first end of the third connecting rod is rotated with the third oscillating bearing
Connection.
Specifically, the revolution speed control device of the steam turbines further includes the 4th oscillating bearing, the 4th joint shaft
The outer ring held is mounted in the second end of first valve rod, inner ring and the second piston bar of the 4th oscillating bearing
Second end is threadedly coupled.
Specifically, the reversal valve is three position four-way directional control valve.
The advantageous effect that technical solution provided in an embodiment of the present invention is brought is：
The revolution speed control device of steam turbines provided by the invention, first connecting rod, curved bar, second connecting rod, third connecting rod
It is controlled for realizing rotating speed with spool composition link mechanism, when governor speed governing, the output shaft of governor passes through curved bar and the
Two connecting rods drive first connecting rod movement, first connecting rod that the spool of reversal valve can be pushed to move back and forth during exercise, to respectively
Two rod chamber oil inlets of two-way cylinder are controlled, are moved back and forth so that the piston of two-way cylinder is realized, in two-way cylinder
When reciprocating motion of the pistons, speed governing spool follows the piston of two-way cylinder and piston rod to move together by third connecting rod, this makes
Drive the power of adjusting spool movement can since two-way cylinder is controlled by hydraulic oil from first connecting rod and two-way cylinder
Larger active force is provided, and the spool of reversal valve only needs the driving force by very little that commutation can be realized, this makes speed governing
The output shaft of device by first connecting rod transmit for drive adjusting spool move power be more than adjusting spool with adjust valve pocket it
Between frictional force, driven when to efficiently solve the problems, such as that governor is only driven by first connecting rod hypodynamic.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the revolution speed control device structural schematic diagram of steam turbines provided in an embodiment of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Embodiment
An embodiment of the present invention provides a kind of revolution speed control devices of steam turbines, as shown in Figure 1, the device includes：
Governor 1, first connecting rod 2 and regulating valve, regulating valve include：Valve body, adjusting spool 7 and the first valve rod 8, the of the first valve rod 8
One end is mounted in adjusting spool 7, and the second end of the first valve rod 8 stretches out valve body.
The device further includes：Reversal valve, two-way cylinder, curved bar 16, second connecting rod 18 and third connecting rod 26,1 He of governor
Regulating valve is in the both sides for being located at first connecting rod 2 on the direction of the length direction of first connecting rod 2, wherein reversal valve
The homonymy of first connecting rod 2 can be arranged in regulating valve.
Two-way cylinder includes cylinder body 10, piston 11, First piston bar 12, second piston bar 13 and is mounted on the first regulating valve
Oil cylinder cover 14 on lid 4, oil cylinder cover 14 are mounted on cylinder body 10, and piston 11 is arranged in the space that oil cylinder cover 14 and cylinder body 10 surround
It is interior, and the space is divided into the first rod chamber 15a and the second rod chamber 15b, First piston bar 12 is located at the first rod chamber 15a
It is interior, and the first end of First piston bar 12 is fixed on piston 11, the second end of First piston bar 12 is stretched out cylinder body 10 and is passed through
Curved bar 16 and second connecting rod 18 and the first end of first connecting rod 2 are sequentially connected, and second piston bar 13 is located at the second rod chamber 15b
Interior, the first end of second piston bar 13 is fixed on piston 11, and the second end of second piston bar 13 stretches out oil cylinder cover 10 and first
The second end of valve rod 8 connects, wherein the center line of second piston bar 13 can be overlapped with the center line of the first valve rod 8.
Reversal valve includes spool 9, P mouthfuls of oil inlet, T mouthfuls of oil return, fuel-displaced A mouthfuls and B mouthfuls fuel-displaced, the spool 9 and first of reversal valve
The middle part of connecting rod 2 is rotatablely connected, and fuel-displaced A mouthfuls is connected to the first rod chamber 15a, and fuel-displaced B mouthfuls is connected to the second rod chamber 15b；Its
In, for being passed through hydraulic oil, T mouthfuls of oil return is connected to fuel tank for P mouthfuls of oil inlet.
The first end of curved bar 16 is mounted on the output shaft 1a of governor 1, second end and the second connecting rod 18 of curved bar 16
First end is rotatablely connected, and the second end of second connecting rod 18 is rotatablely connected with the second end 2a of first connecting rod 2；The of third connecting rod 26
One end and the second end of First piston bar 12 are rotatablely connected, and the second end of third connecting rod 26 is rotated with the first end of first connecting rod 2
Connection, and the rotation of the second end of second connecting rod 18 and the pivot center, spool 9 and first connecting rod 2 of the second end of first connecting rod 2
The first end of axis and third connecting rod 26 and the pivot center of the second end of First piston bar 12 are arranged in parallel.
Governor 1 is used to stablize the rotating speed of steam turbines, and when the rotating speed of steam turbines is relatively low, governor 1 passes through
Rotating output shaft 1a controls to adjust the aperture of spool 7, and then controls the rotating speed of steam turbines, in embodiments of the present invention, adjusts
U.S. WOODWARD series governors, or the governor of domestic Yongchuan machinery plant can be selected in fast device 1.
In the present embodiment, regulating valve can be regulating valve of two-seater.Specifically, regulating valve may include：First regulating valve
Lid 3, second adjusts valve deck 4, regulating valve seat 5, adjusts sleeve 6, adjusting spool 7 and the first valve rod 8, and first adjusts valve deck 3 and the
Two adjusting valve decks 4 are separately fixed at the both ends of regulating valve seat 5, and the middle part of regulating valve seat 5, which offers, adjusts sleeve mounting hole, adjusts
Sleeve 6 is tubular structure and is mounted in regulating valve seat 5 by adjusting sleeve mounting hole that the middle part setting adjusted on sleeve 6 is steamed
Vapour inlet port, the both ends for adjusting sleeve 6 offer adjusting spool installing port, and steam entry port correspondence, which is opened in, adjusts sleeve installation
At hole, there are two protrusions, two protrusion correspondences to be arranged at two adjusting spool installing ports for setting in adjusting spool 7, the first valve
The first end of bar 8 is mounted in adjusting spool 7, and the second end of the first valve rod 8 stretches out first and adjusts valve deck 3.
In the present embodiment, the center line of the first valve rod 8, reversal valve spool 9 center line and First piston bar 12
In center line is generally aligned in the same plane.
In the present embodiment, reversal valve is located at the right side of first connecting rod 2, and in other embodiments, reversal valve can be arranged
In the left side of first connecting rod 2, correspondingly, the logic valve block transposition of 9 left and right sides of spool of reversal valve.
Specifically, which can also include：First oscillating bearing 17 and second joint bearing 19, the first oscillating bearing 17
Outer ring and the outer ring of second joint bearing 19 be separately mounted to the both ends of second connecting rod 18, and the inner ring of the first oscillating bearing 17
It is rotatablely connected by shaft with the second end of curved bar 16, the second end of the inner ring and first connecting rod 18 of second joint bearing 19 passes through
Shaft is rotatablely connected.
Further, the outer ring of the first oscillating bearing 17 and the outer ring of second joint bearing 19 respectively with second connecting rod 18
Both ends are threadedly coupled.The installation and dismounting of second connecting rod 18 can be convenient for by being connected through a screw thread.
Further, when regulating valve is in open state, the centerline parallel of the center line and first connecting rod 2 of curved bar 16
Arrangement, the center line of the spool 9 of reversal valve and the central axis of first connecting rod 2 arrange, the center line of First piston bar 12 with
The central axis of first connecting rod 2 is arranged.It is arranged so the dead angle for the output shaft 1a rotations that can reduce governor 1, fully profit
With the power of the output shaft 1a of governor 1, first connecting rod 2 can be pushed to move larger distance by curved bar 16 and first connecting rod 2,
So that first connecting rod 2 can delicately reflect the output valve of the output shaft 1a of governor 1.
Specifically, which can also include two-way cylinder holder 22, and one end of two-way cylinder holder 22 is fixedly mounted on
On oil cylinder cover 14, the other end of two-way cylinder holder 22 is fixedly mounted on the first adjusting valve deck 3, and the of second piston bar 13
Two ends are connect with the second end of the first valve rod 8 in two-way cylinder holder 22.It can be by oil cylinder cover by two-way cylinder holder 22
14 are fixed on the first adjusting valve deck 3, meanwhile, the second end of the second end of second piston bar 13 and the first valve rod 8 is in two-way oil
Connection in jar support 22, due to the second end and the first valve rod 8 of second piston bar 13 second end connection built on the sand, setting pair
To cylinder bracket 22 can by external disturbance, (such as operating personnel be small to avoid the connection of second piston bar 13 and the first valve rod 8
The heart collides the junction of second piston bar 13 and the first valve rod 8), prevent from influencing because colliding the problems such as second piston bar 13 with
The normal work of first valve rod 8.
Specifically, which can also include：First locking nut 23 and the first flexible seals (not shown), the
The position of corresponding first valve rod 8 is provided with the first groove 3a on one adjusting valve deck 3, and the first flexible seals are located at the first groove 3a
Interior and circular first valve rod 8 arranges that the first locking nut 23 is set on the first valve rod 8 and is installed in the first groove 3a, the
First flexible seals are pressed on the first valve rod 8 by one locking nut 23.First flexible seals can prevent the first valve rod 8
Leak vapour in the gap adjusted with first between valve deck 3.Wherein, the first flexible seals can be O-ring seal, flexible graphite gasket
Or flexible graphite sealing item.
Specifically, which can also include the second valve rod 24, and the first end of the second valve rod 24 is mounted on adjusting spool 7
On, the second end of the second valve rod 24 stretches out second and adjusts valve deck 4.The second valve rod 24, which is arranged, can make adjusting spool 7 by second
Valve rod 24 is supported on the second adjusting valve deck 4, to ensure that the direction that adjusting spool 7 moves reciprocatingly will not deviate.
Further, which can also include：Second locking nut 25 and the second flexible seals (not shown),
The position of corresponding second valve rod 24 is provided with the second groove 4a on second adjusting valve deck 4, and it is recessed that the second flexible seals are located at second
It is arranged in slot 4a and around the second valve rod 24, the second locking nut 25 is set on the second valve rod 24 and is installed on the second groove 4a
Interior, the second flexible seals are pressed on the second valve rod 24 by the second locking nut 25.Second flexible seals can prevent
Two valve rods 24 and second adjust the gap between valve deck 4 and leak vapour.Wherein, the second flexible seals can be O-ring seal, flexibility
Graphite pad or flexible graphite sealing item.
In the present embodiment, reversal valve can be three position four-way directional control valve.
Further, which can also include third oscillating bearing 20, and the outer ring of third oscillating bearing 20 is mounted on the
In the second end of one piston rod 12, the first end of third connecting rod 26, which is rotated with the inner ring of third oscillating bearing 20 by shaft, to be connected
It connects.Wherein, third oscillating bearing 20 is threadedly coupled with the second end of First piston bar 12.Third oscillating bearing 20 is arranged being capable of letter
It singly realizes the rotation connection of First piston bar 12 and third connecting rod 26, and can realize First piston bar 12 and third connecting rod 26
Quickly and easily installation and dismounting.
Specifically, which can also include the 4th oscillating bearing 21, and the outer ring of the 4th oscillating bearing 21 is mounted on first
In the second end of valve rod 8, the inner ring of the 4th oscillating bearing 21 is threadedly coupled with the second end of second piston bar 13.4th joint shaft
Holding 21 can realize that first connecting rod 2 and the first valve rod 8 are quickly and easily installed and dismounting.In addition, can on two-way cylinder holder 22
Opening is arranged, for dismantling and replacing the 4th oscillating bearing 21.
Specifically, if the second end 2a tie points of second connecting rod 18 and first connecting rod 2 are a, the spool 9 and first of reversal valve
The tie point of connecting rod 2 is b, and the tie point of the first end of third connecting rod 26 and first connecting rod 2 is c, then the distance of a to b can wait
In the distance of c to b.
Rotation connection can be hinged in embodiments of the present invention.
It following is a brief introduction of the operation principle of the revolution speed control device of steam turbines provided by the invention：
In the apparatus, governor 1 is used to stablize the rotating speed of steam turbines, is steamed when the centrifugal hammer of steam turbines is shown
The rotating speed of vapour turbine is relatively low when needing speedup, operates the output shaft 1a of governor 1 along the rotation of the direction (clockwise direction) of speedup
Turn (usual rotating range is within 30 °), curved bar 16 can follow the output shaft 1a of governor 1 to rotate together with, and make the second company
Bar 18 moves right, to push the second end 2a of first connecting rod 2, before the second end 2a movements of first connecting rod 2, at reversal valve
There is not hydraulic oil to be passed through in Yu Zhongwei, i.e. the first rod chamber 15a and the second rod chamber 15b, then piston 11 is immovable (at this time
Adjusting spool 7 is in open state), the tie point of First piston bar 12 and third connecting rod 26 is as center of rotation, third connecting rod
26 move up with one end of first connecting rod 2, the length for compensating first connecting rod 2, to ensure that first connecting rod 2 drives reversal valve
Spool 9 can be done using tie point as center of rotation and be turned clockwise along linear motion, first connecting rod 2 and third connecting rod 26 always
It is dynamic, when first connecting rod 2 moves, the spool 9 of reversal valve can be driven to move right together, reversal valve is made to enter location right, this
When, hydraulic oil flows into fuel-displaced B mouthfuls of oil inlet for P mouthfuls by oil inlet, and flows into the second rod chamber 15b, the liquid in the second rod chamber 15b
Pressure oil extrusion piston 11 makes piston 11 be moved to the direction of the first rod chamber 15a, and the hydraulic oil in the first rod chamber 15a is by going out
It is oily A mouthfuls outflow and by oil return T mouthful flow back to fuel tank, while piston 11 move to the direction of the first rod chamber 15a drive adjusting
Spool 7 moves downward together, to increase adjusting spool 7 and adjust the gap between sleeve 6, and then increases steam turbine
The supply of the quantity of steam of machine realizes the function of speedup, and in practical work process, operator may need a small amount of multi-pass operation
The output shaft 1a of governor 1 is rotated along the direction of speedup, and the rotating speed of steam turbines is finally made to reach requirement.
After the rotating speed of steam turbines increases to required value, the spool 9 of reversal valve returns to middle position, specifically, piston 11
It moves downward, drives the first end of first connecting rod 2 to move downward, while the spool 9 of reversal valve being driven to be moved to the left so that commutation
The spool 9 of valve becomes middle position, and P mouthfuls of the oil inlet of reversal valve at this time is disconnected with A mouthfuls fuel-displaced, P mouthfuls of oil inlet with fuel-displaced B mouthfuls, piston
11 movements stop, and complete speedup.
When the output shaft 1a of governor 1 is rotated along the direction (counter clockwise direction) of reduction of speed, action process is with reference to tune
The process that the output shaft 1a of fast device 1 is rotated along the direction of speedup.
The revolution speed control device of steam turbines provided by the invention, first connecting rod, curved bar, second connecting rod, third connecting rod
It is controlled for realizing rotating speed with spool composition link mechanism, when governor speed governing, the output shaft of governor passes through curved bar and the
Two connecting rods drive first connecting rod movement, first connecting rod that the spool of reversal valve can be pushed to move back and forth during exercise, to respectively
Two rod chamber oil inlets of two-way cylinder are controlled, are moved back and forth so that the piston of two-way cylinder is realized, in two-way cylinder
When reciprocating motion of the pistons, speed governing spool follows the piston of two-way cylinder and piston rod to move together by third connecting rod, this makes
Drive the power of adjusting spool movement can since two-way cylinder is controlled by hydraulic oil from first connecting rod and two-way cylinder
Larger active force is provided, and the spool of reversal valve only needs the driving force by very little that commutation can be realized, this makes speed governing
The output shaft of device by first connecting rod transmit for drive adjusting spool move power be more than adjusting spool with adjust valve pocket it
Between frictional force, driven when to efficiently solve the problems, such as that governor is only driven by first connecting rod hypodynamic.In addition, third
Connecting rod can adapt to first connecting rod and the position of First piston bar is adjusted, and the center line of second piston bar and the first valve
The center line of bar is located on the same line, and is along tune always to make the direction of power that first connecting rod passes to adjusting spool
The axis direction of spool is saved, being arranged so can avoid adjusting spool that bite phenomenon occurs during the motion.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of revolution speed control device of steam turbines, the revolution speed control device of the steam turbines include：Governor,
One connecting rod and regulating valve, which is characterized in that the regulating valve includes：Valve body, adjusting spool and the first valve rod, the adjusting spool
In the valve body, the first end of first valve rod is mounted in the adjusting spool, the second end of first valve rod
The valve body is stretched out,
The revolution speed control device of the steam turbines further includes：Reversal valve, two-way cylinder, curved bar and second connecting rod and third connect
Bar, the governor and the regulating valve are being located at described on the direction of the length direction of the first connecting rod
The both sides of one connecting rod；
The two-way cylinder includes cylinder body, piston, First piston bar and second piston bar, and the piston is arranged in the cylinder body
It is interior, and the cylinder body is divided into the first rod chamber and the second rod chamber, the First piston bar is located in first rod chamber,
And the first end of the First piston bar is fixed on the piston, the second end of the First piston bar stretches out the cylinder body simultaneously
It is sequentially connected by the first end of the third connecting rod and the first connecting rod, the second piston bar, which is located at described second, bar
The first end of intracavitary, the second piston bar is fixed on the piston, and the second end of the second piston bar stretches out oil cylinder cover
It is fixedly connected with the second end of first valve rod；
The reversal valve includes spool, P mouthfuls of oil inlet, fuel-displaced A mouthfuls and B mouthfuls fuel-displaced, the middle part of the spool and the first connecting rod
Rotation connection, described fuel-displaced A mouthfuls is connected to first rod chamber, and described fuel-displaced B mouthfuls is connected to second rod chamber；
The first end of the curved bar is mounted on the output shaft of the governor, the second end of the curved bar and the second connecting rod
First end rotation connection, the second end of the second end of the second connecting rod and the first connecting rod is rotatablely connected；The third
The first end of connecting rod and the second end of the First piston bar are rotatablely connected, and the second end of the third connecting rod connects with described first
The first end of bar is rotatablely connected, and the pivot center of the second end of the second connecting rod and the second end of the first connecting rod, institute
State the second end of the pivot center of spool and the first connecting rod and the first end and the First piston bar of the third connecting rod
Pivot center parallel arrangement.
2. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the steam turbines
Revolution speed control device further includes：First oscillating bearing and second joint bearing, the outer ring of first oscillating bearing and described
The outer ring of two oscillating bearings is separately mounted to the both ends of the second connecting rod, and the inner ring of first oscillating bearing and the song
The second end of bar is rotatablely connected by shaft, and the inner ring of the second joint bearing is with the second end of the first connecting rod by turning
Axis is fixedly connected.
3. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the steam turbines
Revolution speed control device further includes two-way cylinder holder, and one end of the two-way cylinder holder is fixedly mounted on the oil cylinder cover,
The other end of the two-way cylinder holder is fixedly mounted on the first regulating valve and covers, and the second end of the second piston bar and institute
The second end for stating the first valve rod connects in the two-way cylinder holder.
4. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the regulating valve is also wrapped
It includes：First locking nut and the first flexible seals, the position of first valve rod is corresponded on the valve body, and to be provided with first recessed
Slot, first flexible seals are located in first groove and are arranged around first valve rod, first locking screw
Mother set is located on first valve rod and is installed in first groove, and first locking nut is flexible close by described first
Sealing is pressed on first valve rod.
5. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the regulating valve further includes
Second valve rod, the first end of second valve rod are mounted in the adjusting spool, and the second end of second valve rod stretches out the
Two adjust valve deck.
6. the revolution speed control device of steam turbines according to claim 5, which is characterized in that the regulating valve is also wrapped
It includes：Second locking nut and the second flexible seals, second regulating valve cover the position setting of corresponding second valve rod
There is the second groove, second flexible seals are located in second groove and are arranged around second valve rod, and described the
Two locking nuts are set on second valve rod and are installed in second groove, and second locking nut is by described
Two flexible seals are pressed on second valve rod.
7. the revolution speed control device of steam turbines according to claim 1, which is characterized in that in first valve rod
In heart line, the center line of spool of the reversal valve and the center line of the First piston bar are generally aligned in the same plane.
8. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the steam turbines
Revolution speed control device further includes third oscillating bearing, and the outer ring of the third oscillating bearing is mounted on the of the First piston bar
On two ends, the first end of the third connecting rod and the inner ring of the third oscillating bearing are rotatablely connected by shaft.
9. the revolution speed control device of steam turbines according to claim 1, which is characterized in that the steam turbines
Revolution speed control device further includes the 4th oscillating bearing, and the outer ring of the 4th oscillating bearing is mounted on the second of first valve rod
On end, the inner ring of the 4th oscillating bearing is threadedly coupled with the second end of the second piston bar.
10. according to the revolution speed control device of claim 1-9 any one of them steam turbines, which is characterized in that described to change
It is three position four-way directional control valve to valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007550.XA CN106812558B (en) | 2017-01-05 | 2017-01-05 | A kind of revolution speed control device of steam turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007550.XA CN106812558B (en) | 2017-01-05 | 2017-01-05 | A kind of revolution speed control device of steam turbines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106812558A CN106812558A (en) | 2017-06-09 |
| CN106812558B true CN106812558B (en) | 2018-10-23 |
Family
ID=59109349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710007550.XA Active CN106812558B (en) | 2017-01-05 | 2017-01-05 | A kind of revolution speed control device of steam turbines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106812558B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2849275Y (en) * | 2005-11-25 | 2006-12-20 | 上海新华电站液压系统有限公司 | Operating mechanism of hydraulic cylinder |
| CN101514641A (en) * | 2003-09-22 | 2009-08-26 | 株式会社东芝 | Protection system for turbo machine and power generating equipment |
| CN104088674A (en) * | 2014-06-12 | 2014-10-08 | 武汉船用机械有限责任公司 | Method and device for controlling rotating speed of steam turbine |
| CN104791026A (en) * | 2015-03-06 | 2015-07-22 | 武汉船用机械有限责任公司 | Speed adjusting controller for industrial steam turbine |
| CN205370659U (en) * | 2016-02-01 | 2016-07-06 | 北京博力威格智能传控设备有限公司 | Hydraulic pressure governing system that steam turbine was used |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5587807A (en) * | 1978-12-27 | 1980-07-03 | Fuji Electric Co Ltd | Rapid change limiter for turbine load |
| JPH0768882B2 (en) * | 1988-01-25 | 1995-07-26 | 株式会社日立製作所 | Speed governor for steam turbine |
| FR2936558B1 (en) * | 2008-09-30 | 2016-11-11 | Snecma | SYSTEM FOR CONTROLLING EQUIPMENT WITH VARIABLE GEOMETRY OF A GAS TURBINE ENGINE INCLUDING, IN PARTICULAR, A BARREL LINK. |
-
2017
- 2017-01-05 CN CN201710007550.XA patent/CN106812558B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514641A (en) * | 2003-09-22 | 2009-08-26 | 株式会社东芝 | Protection system for turbo machine and power generating equipment |
| CN2849275Y (en) * | 2005-11-25 | 2006-12-20 | 上海新华电站液压系统有限公司 | Operating mechanism of hydraulic cylinder |
| CN104088674A (en) * | 2014-06-12 | 2014-10-08 | 武汉船用机械有限责任公司 | Method and device for controlling rotating speed of steam turbine |
| CN104791026A (en) * | 2015-03-06 | 2015-07-22 | 武汉船用机械有限责任公司 | Speed adjusting controller for industrial steam turbine |
| CN205370659U (en) * | 2016-02-01 | 2016-07-06 | 北京博力威格智能传控设备有限公司 | Hydraulic pressure governing system that steam turbine was used |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106812558A (en) | 2017-06-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106286197B (en) | One kind is done more physical exercises unit straight line motor drive type plunger pump | |
| CN103723259A (en) | Blade swing mechanism and marine cycloidal propeller comprising blade swing mechanism | |
| AU2014259522B2 (en) | Adjusting device for turbine rotor blades | |
| CN106091010A (en) | A kind of engine chamber duplex burner valve | |
| CN203604682U (en) | Electro-hydraulic large torque pore plate throttling valve | |
| CN106812558B (en) | A kind of revolution speed control device of steam turbines | |
| US10247166B2 (en) | Device for reversing a blade of a runner unit | |
| CN108612689A (en) | A kind of hydraulic control system and method for large-angle slewing mechanism | |
| CN106958554B (en) | Direct feedback digital wobble hydraulic cylinder is driven in a kind of | |
| CN107762972A (en) | A kind of self-saturation type axle induced-draft fan movable vane piece adjustment mechanism and its method of work | |
| CN202418077U (en) | Motor-driven servo valve | |
| CN109899267A (en) | A kind of EHA driving plunger pump and its control method | |
| JP6577719B2 (en) | Movable blade operation device | |
| CN205841243U (en) | It is applied to variable oar vane pump mechanical type corner and regulates indicating mechanism | |
| CN201856299U (en) | Mixing truck pneumatic operating mechanism and concrete mixing truck with same | |
| CN105257895B (en) | Butterfly valve and the injection apparatus using the butterfly valve | |
| CN104676079A (en) | Compact valve driving mechanism | |
| CN201546612U (en) | Mining linked all-hydraulic drill | |
| JP5081803B2 (en) | Hydropower system | |
| CN205503584U (en) | Hydro -cylinder switching -over and volume speed -modulating hydraulic system | |
| CN101865103B (en) | Hydraulic reciprocating water injection pump and using method | |
| CN209095599U (en) | A kind of hydraulic servo-joint | |
| CN209976685U (en) | Shaft extension through-flow turbine structure | |
| CN205469708U (en) | Stabilizer device of servo motor direct drive | |
| CN107859620A (en) | A kind of high-pressure low-noise servomotor pump based on double shaft servomotors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |