CN206319991U - A kind of impulse turbine governing system - Google Patents
A kind of impulse turbine governing system Download PDFInfo
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- CN206319991U CN206319991U CN201621293933.5U CN201621293933U CN206319991U CN 206319991 U CN206319991 U CN 206319991U CN 201621293933 U CN201621293933 U CN 201621293933U CN 206319991 U CN206319991 U CN 206319991U
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- Prior art keywords
- nozzle needle
- valve
- somebody
- jet deflector
- master
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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
Abstract
A kind of impulse turbine governing system of the utility model, belongs to water turbine governing technical field, and the utility model has the advantages that simple in construction, easy to maintenance, reliable.The utility model includes rotary wheel of water turbine and leaf bucket on rotary wheel of water turbine, stepper motor, PLC speed regulators, the nozzle needle relative with leaf bucket, the water outlet end alignment leaf bucket of nozzle needle；Stepper motor connects PLC speed regulators, and speed governing is controlled by PLC speed regulators, and the other end of nozzle needle is connected with nozzle needle servomotor；Jet deflector is installed in the water outlet end of nozzle needle, jet deflector is connected with jet deflector servomotor, and the other end of jet deflector servomotor is connected with jet deflector operation valve, and the other end of nozzle needle servomotor is connected with one-way control valve；The other end of one-way control valve is connected to emergency shutdown valve and matches somebody with somebody valve, side connection stepper motor of the nozzle needle master with valve with nozzle needle master；Jet deflector operation valve, emergency shutdown valve, nozzle needle master are also respectively connected on pressure oil with valve.
Description
Technical field
The utility model belongs to water turbine governing technical field, particularly relates to a kind of impulse turbine speed governing system
System.
Background technology
The course of work of impulse turbine is：By the water from penstock, high-speed jet edge is formed after nozzle and is turned
Take turns the impact runner bucket acting of tangent to periphery direction；The type hydraulic turbine is applied to high water head, the power station of low discharge, with structure
Compact, stable, easy to maintenance the features such as.
Because the head of impulse turbine is higher, penstock is typically long, therefore the shut-in time of nozzle needle can not
It is too fast, typically adjust between 20~60s, otherwise will produce great water hammer, to penstock and the safety of whole power plant
Constitute a threat to, while generating unit speed can not be too high when must being fulfilled for system removal of load again, the normal operation to unit is caused
Injury.
Utility model content
The utility model makes up the deficiencies in the prior art and adjusted there is provided a kind of impulse turbine aiming above mentioned problem
Speed system；The utility model has the advantages that simple in construction, easy to maintenance, reliable.
To achieve the above object, the utility model is adopted the following technical scheme that.
A kind of impulse turbine governing system of the utility model, including the leaf on rotary wheel of water turbine and rotary wheel of water turbine
Bucket, stepper motor, PLC speed regulators, the nozzle needle relative with the leaf bucket, the water outlet end alignment leaf bucket of the nozzle needle；Its feature
It is：The stepper motor connects PLC speed regulators, and speed governing is controlled by PLC speed regulators, and the other end of the nozzle needle is connected with nozzle needle
Servomotor；Jet deflector is installed in the water outlet end of the nozzle needle, the jet deflector is connected with jet deflector servomotor, described to be folded to
The other end of device servomotor is connected with jet deflector operation valve, and the other end of the nozzle needle servomotor is connected with one-way control valve；Institute
The other end for stating one-way control valve is connected to emergency shutdown valve with nozzle needle master with valve, and side of the nozzle needle master with valve is connected
Stepper motor；The jet deflector operation valve, emergency shutdown valve, nozzle needle master are also respectively connected on pressure oil with valve.
As a kind of preferred scheme of the present utility model, the nozzle needle master is made up of with valve piston, housing, bushing, in institute
The nozzle needle master stated to match somebody with somebody and be provided with pressure oil-in, oil extraction outlet, the first control port, the second control port on valve.
As another preferred scheme of the present utility model, the output end of the PLC speed regulators is connected with driver element, institute
Driver element is stated with the input of stepper motor to be connected.
As another preferred scheme of the present utility model, the pressure oil-in is arranged on described nozzle needle master and matches somebody with somebody valve
Bottom right side, the oil extraction outlet is arranged on the center bottom that described nozzle needle master matches somebody with somebody valve, and the piston is arranged on described spray
At the top of center of the pin master with valve, first control port, the second control port are separately positioned on described nozzle needle master and match somebody with somebody valve
Left side.
In addition, the opening value of the nozzle needle servomotor has PID arithmetic module to be calculated.
Compared with prior art, the utility model beneficial effect is.
A kind of impulse turbine governing system disclosed in the utility model, is used to control stepping by PLC speed regulators
The speed of motor, the opening value by PID arithmetic calculating nozzle needle servomotor；In normal operation, jet deflector is not involved in regulation, only
Have when system removal of load, when generating unit speed is uprushed to a certain setting valve, jet deflector is just put into rapidly, cut off jet；When rotating speed is low
When another setting valve, jet deflector is returned to initial position, so can not only ensure minor swing regulation quality but also can meet regulation guarantor
Card is required；The utility model has the advantages that simple in construction, easy to maintenance, reliable.
Brief description of the drawings
In order that technical problem, technical scheme and beneficial effect that the utility model is solved are more clearly understood, below
With reference to the drawings and the specific embodiments, the utility model is further elaborated.It should be appreciated that tool described herein
Body embodiment only to explain the utility model, is not used to limit the utility model.
Fig. 1 is a kind of overall structure diagram of impulse turbine governing system of the utility model.
Fig. 2 is a kind of PID arithmetic module frame chart of impulse turbine governing system of the utility model.
Fig. 3 is the structural representation that a kind of nozzle needle master of impulse turbine governing system of the utility model matches somebody with somebody valve.
Marked in figure：1 it is jet deflector operation valve, 2 be emergency shutdown valve, 3 be nozzle needle master with valve, 4 be pressure oil, 5 is step
Stepper motor, 6 be one-way control valve, 7 be nozzle needle servomotor, 8 be jet deflector servomotor, 9 be nozzle needle, 10 be jet deflector, 11 be water
Turbine Runner, 12 be leaf bucket, 13 be piston, 14 be housing, 15 be bushing, 16 be pressure oil-in, 17 be oil extraction outlet, 18 be
First control port, 19 are the second control port.
Embodiment
With reference to shown in accompanying drawing 1 and 3, a kind of impulse turbine governing system of the utility model, including rotary wheel of water turbine 10,
And leaf bucket 12 on rotary wheel of water turbine 10, stepper motor 5, PLC speed regulators, the nozzle needle 9 relative with the leaf bucket 12, the nozzle needle
9 water outlet end alignment leaf bucket 12；It is characterized in that：The stepper motor 5 connects PLC speed regulators, is controlled to adjust by PLC speed regulators
Speed, the other end of the nozzle needle 9 is connected with nozzle needle servomotor 7；Jet deflector 10, institute are installed in the water outlet end of the nozzle needle 9
State jet deflector 10 and be connected with jet deflector servomotor 8, the other end of the jet deflector servomotor 8 is connected with jet deflector operation valve 1, institute
The other end for stating nozzle needle servomotor 7 is connected with one-way control valve 6；The other end of the one-way control valve 6 is connected to accident
Shutdown valve 2 matches somebody with somebody valve 3, side connection stepper motor 5 of the nozzle needle master with valve 3 with nozzle needle master；The jet deflector operation valve 1, thing
Therefore shutdown valve 2, nozzle needle master are also respectively connected on pressure oil 4 with valve 3.
As a kind of embodiment of the present utility model, the nozzle needle master is made up of with valve 3 piston 13, housing 14, bushing 15,
In described nozzle needle master the 17, first control port 18, second control oil is exported with pressure oil-in 16, oil extraction is provided with valve 3
Mouth 19.
As another embodiment of the present utility model, the output end of the PLC speed regulators is connected with driver element, described
Driver element is connected with the input of stepper motor 5.
As another embodiment of the present utility model, the pressure oil-in 16 is arranged on described nozzle needle master and matches somebody with somebody valve 3
Bottom right side, oil extraction outlet 17 is arranged on the center bottom that described nozzle needle master matches somebody with somebody valve 3, and the piston 13 is arranged on institute
At the top of center of the nozzle needle master stated with valve 3, first control port 18, the second control port 19 are separately positioned on described spray
Pin master matches somebody with somebody the left side of valve 3.
In addition, the opening value of the nozzle needle servomotor 7 is calculated by PID arithmetic module.
Pressure oil-in 16 of the described nozzle needle master with valve 3 is connected on pressure oil 4.
As shown in Fig. 2 being a kind of PID control block diagram of impulse turbine governing system of the utility model；Fg in figure,
fo、yoRespectively machine class frequency, frequency are given, aperture gives, and Δ f values are sent directly into proportional component and differentiation element, and and bp
Integral element is sent into after value of feedback synthesis and carries out PID computings, the calculated value of servomotor aperture is drawn.
The corner of stepper motor 5 is converted into the upper of servomotor guiding needle plug by the screw mandrel being connected with the stepper motor 5
Lower straight-line displacement, so as to control the upper and lower displacement of piston 13 of the nozzle needle master with valve 3, makes servomotor towards the direction motion opened or closed.
Several courses of work of the utility model impulse turbine governing system are as follows：（1）Autostop works as PLC speed governing
Device is connected to after shutdown order：Unit load is first reduced to unloaded, received after jump oil circuit breaker signal, PLC speed regulators pass through driver
Control stepper motor 5 makes nozzle needle 9 close automatically to closed positions, while putting into the corresponding jet deflector 10 of nozzle needle 9.Now, complete
The flow of automatic startup-shutdown, jet deflector 10, all in input position, is that start is ready next time.
（2）Accidental shutdown：After PLC speed regulators, which receive accidental shutdown, to be made, emergency shutdown valve 2 is acted, and nozzle needle 9 is closed to fully closed
Position, while jet deflector 10 is put into.
（3）Automatic running is switched to manual operation：When PLC speed regulators are switched to manual operation by automatic running operating mode：First
Switch automatic/hand button on regulator cubicle, corresponding automatic pilot lamp extinguishes, the driver dead electricity of stepper motor 5, PLC speed regulators
In manual mode；Hereafter, can be by the add drop aperture knob in the ON/OFF or operation regulator cubicle of handwheel on stepper motor 5
Carry out add drop unit output（Rotating speed）.
（4）It is switched to automatic running manually：When PLC speed regulators are switched to automatic running by manual operating condition, stepper motor 5 drives
Dynamic device obtains electric, and PLC speed regulators are in auto state.
The utility model is in normal operation, and jet deflector 10 is moved back according to the opening and closing of corresponding nozzle needle 9
The action for going out and putting into, other when, jet deflector 10 be not involved in regulation, only when system removal of load, generating unit speed is uprushed to certain
When one setting valve or unit receive accidental shutdown order, jet deflector 10 is just rapid to be put into, and cuts off jet；When rotating speed is less than another
During one setting valve, jet deflector 10 is returned to initial position, so can not only ensure minor swing regulation quality but also can meet regulating guarantee
It is required that.
It is understood that specifically described above with respect to of the present utility model, be merely to illustrate the utility model and not
The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with
The utility model is modified or equivalent, to reach identical technique effect；As long as satisfaction uses needs, all in this reality
Within new protection domain.
Claims (4)
1. a kind of impulse turbine governing system, including rotary wheel of water turbine（11）And rotary wheel of water turbine（11）On leaf bucket
（12）, stepper motor（5）, PLC speed regulators, with the leaf bucket（12）Relative nozzle needle（9）, the nozzle needle（9）Water outlet end
It is directed at leaf bucket（12）；It is characterized in that：The stepper motor（5）PLC speed regulators are connected, speed governing is controlled by PLC speed regulators, it is described
Nozzle needle（9）The other end be connected with nozzle needle servomotor（7）；In the nozzle needle（9）Water outlet end jet deflector is installed（10）, institute
State jet deflector（10）It is connected with jet deflector servomotor（8）, the jet deflector servomotor（8）The other end be connected with jet deflector operation
Valve（1）, the nozzle needle servomotor（7）The other end be connected with one-way control valve（6）；The one-way control valve（6）The other end
It is connected to emergency shutdown valve（2）Match somebody with somebody valve with nozzle needle master（3）, the nozzle needle master is with valve（3）Side connection stepper motor
（5）；The jet deflector operation valve（1）, emergency shutdown valve（2）, nozzle needle master match somebody with somebody valve（3）It is also respectively connected to pressure oil（4）On.
2. a kind of impulse turbine governing system according to claim 1, it is characterised in that：The nozzle needle master matches somebody with somebody valve
（3）By piston（13）, housing（14）, bushing（15）Composition, matches somebody with somebody valve in described nozzle needle master（3）On be provided with pressure oil-in
（16）, oil extraction outlet（17）, the first control port（18）, the second control port（19）.
3. a kind of impulse turbine governing system according to claim 1, it is characterised in that：The PLC speed regulators
Output end is connected with driver element, the driver element and stepper motor（5）Input be connected.
4. a kind of impulse turbine governing system according to claim 2, it is characterised in that：The pressure oil-in
（16）It is arranged on described nozzle needle master and matches somebody with somebody valve（3）Bottom right side, oil extraction outlet（17）Described nozzle needle master is arranged on to match somebody with somebody
Valve（3）Center bottom, the piston（13）It is arranged on described nozzle needle master and matches somebody with somebody valve（3）Center at the top of, it is described first control
Hydraulic fluid port（18）, the second control port（19）It is separately positioned on described nozzle needle master and matches somebody with somebody valve（3）Left side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621293933.5U CN206319991U (en) | 2016-11-29 | 2016-11-29 | A kind of impulse turbine governing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621293933.5U CN206319991U (en) | 2016-11-29 | 2016-11-29 | A kind of impulse turbine governing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206319991U true CN206319991U (en) | 2017-07-11 |
Family
ID=59265520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621293933.5U Active CN206319991U (en) | 2016-11-29 | 2016-11-29 | A kind of impulse turbine governing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206319991U (en) |
-
2016
- 2016-11-29 CN CN201621293933.5U patent/CN206319991U/en active Active
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