CN104153829B - Realize steam turbine set power system starting method and the device of oil circuit automatic switchover - Google Patents
Realize steam turbine set power system starting method and the device of oil circuit automatic switchover Download PDFInfo
- Publication number
- CN104153829B CN104153829B CN201410341667.8A CN201410341667A CN104153829B CN 104153829 B CN104153829 B CN 104153829B CN 201410341667 A CN201410341667 A CN 201410341667A CN 104153829 B CN104153829 B CN 104153829B
- Authority
- CN
- China
- Prior art keywords
- high voltage
- voltage startup
- steam turbine
- power system
- turbine set
- 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
Landscapes
- Control Of Turbines (AREA)
Abstract
The invention belongs to motivational drive technical field, particularly a kind of steam turbine set power system starting method realizing oil circuit and automatically switch, when starting steam turbine set power system, detects the rotor speed of steam turbine set power system; The steam turbine set power system rotor speed value detected and predefined value are contrasted, judges whether rotor speed value is more than or equal to predefined value; If so, then control high voltage startup fuel pump outlet door to close gradually, until after the closedown of high voltage startup fuel pump outlet non-return flap, stop controlling high voltage startup fuel pump outlet door.The present invention also provides a kind of steam turbine set power system starting drive realizing oil circuit and automatically switch.By when the rotor speed of steam turbine set power system is more than or equal to predefined value, control high voltage startup fuel pump outlet door to close gradually, and then high voltage startup fuel pump outlet non-return flap is closed, reach and automatically complete the process that high voltage startup oil pump feed taken over by main oil pump, improve the life-span of the speed control system of steam-turbine unit.
Description
Technical field
The invention belongs to motivational drive technical field, particularly a kind of steam turbine set power system starting method and device realizing oil circuit automatic switchover.
Background technique
Steam turbine is the rotary power machinery transformation of energy of steam being become mechanical work, and main prime mover being used as generating, also can the various pump of Direct driver, blower fan, compressor and propeller for vessels.The steam discharge of steam turbine or intermediate extraction can also be utilized to meet and to produce and heat supply needs in life.
But start to normal operation at steam turbine and need the regular hour, namely steam turbine is by Steam Actuation rotor turns, and passing in time makes the rotor speed of steam turbine increasing.Main oil pump is directly connected with the rotor of steam turbine, and regulate oil and lubricant oil normally to run to provide for steam turbine set, along with the rotor speed of steam turbine is increasing, the main oil pump outlet pressure of steam turbine can and then increase.And before the rotating speed of rotor reaches normal operation rotating speed, by high voltage startup oil pump for steam turbine set normally run provide regulate oil and lubricant oil.When the rotating speed of rotor reaches the rotating speed of normal operation, high voltage startup oil pump feed need be stopped, and turn to be taken over by main oil pump and carry out fuel feeding.Current steam-turbine unit often not easily completes above-mentioned transfer process automatically, may cause the injector moment oil-break in steam-turbine unit, and then making injector moment oil-break, causing the phenomenon of chaser to occur when directly stopping high voltage startup oil pump.So, the normal work of steam turbine can be affected, and greatly can reduce the life-span of the speed control system of steam-turbine unit.
Therefore, a kind of the steam turbine set power system starting method and the device that realize oil circuit automatic switchover is needed badly.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of steam turbine set power system starting method realizing oil circuit and automatically switch, to realize being automatically switched by the process of high voltage startup oil pump feed to main oil pump fuel feeding, avoid the phenomenon of chaser to occur, improve the life-span of the speed control system of steam-turbine unit.
For solving the problems of the technologies described above, the invention provides a kind of steam turbine set power system starting method realizing oil circuit and automatically switch, comprising the steps:
Step a: when starting described steam turbine set power system, detects the rotor speed of described steam turbine set power system;
Step b: the rotor speed value of the described steam turbine set power system detected and predefined value are contrasted, judges whether the rotor speed value of the described steam turbine set power system detected is more than or equal to described predefined value, if so, then goes to step c;
Step c: control described high voltage startup fuel pump outlet door and close gradually, for reducing the oil pressure of described high voltage startup oil pump, until after the closedown of described high voltage startup fuel pump outlet non-return flap, stops controlling described high voltage startup fuel pump outlet door.
Further, also comprising after described step c when stopping described steam turbine set power system, controlling described high voltage startup fuel pump outlet door and returning to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
Further, also comprise after described step c and stop described high voltage startup oil pump, then control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
Further, described predefined value is between 2700 to 2950r/min.
A kind of steam turbine set power system starting method realizing oil circuit and automatically switch provided by the invention, by when the rotor speed of steam turbine set power system is more than or equal to predefined value, control high voltage startup fuel pump outlet door to close gradually, and then high voltage startup fuel pump outlet non-return flap is closed, reach and automatically complete the process that high voltage startup oil pump feed taken over by main oil pump, improve the life-span of the speed control system of steam-turbine unit.
The present invention also provides a kind of device realizing the steam turbine set power system startup that oil circuit automatically switches, comprise: high voltage startup fuel pump outlet door: be arranged in described steam turbine set power system, for controlling the rise and fall of the high voltage startup fuel pump outlet place oil pressure of described steam turbine set power system; Detection unit: be connected with the rotor of described steam turbine set power system, during for starting described steam turbine set power system, detects the rotor speed of described steam turbine set power system; Judging unit: described judging unit is connected with described detection unit, the rotor speed value of the described steam turbine set power system detected and predefined value are contrasted, judges whether the rotor speed value of the described steam turbine set power system detected is more than or equal to described predefined value; Control unit: described control unit is connected with described judging unit, for when the rotor speed value of described steam turbine set power system is more than or equal to described predefined value, control described high voltage startup fuel pump outlet door to close gradually, for reducing the oil pressure of described high voltage startup oil pump, until after the high voltage startup fuel pump outlet non-return flap closedown of described steam turbine set power system, stop controlling described high voltage startup fuel pump outlet door.
Further, described control system comprises recovery unit, described recovery unit is connected with described detection unit, when described detection unit detects that described steam turbine set power system transfers halted state to by operating condition, control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
Further, judging unit: described judging unit is connected with described high voltage startup fuel pump outlet non-return flap, judges whether described high voltage startup fuel pump outlet non-return flap closes; Control unit: described control unit is connected with described judging unit, during for judging that described high voltage startup fuel pump outlet non-return flap is closed, stop high voltage startup oil pump, then control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
Further, described steam turbine set power system comprises main oil pump, main oil pump outlet non-return door, oil passage change-over valve, high voltage startup oil pump, high voltage startup fuel pump outlet door, high voltage startup fuel pump outlet non-return flap, injector and Steam Turhine Adjustment security system, described main oil pump is connected with the first main oil pump pipe and the second main oil pump pipe respectively, described first main oil pump pipe is provided with main oil pump outlet non-return door, described second main oil pump pipe is provided with oil passage change-over valve, described high voltage startup oil pump is connected with the first high voltage startup oil pump pipe and the second high voltage startup oil pump pipe respectively, described first high voltage startup oil pump pipe is provided with described high voltage startup fuel pump outlet non-return flap successively and described high voltage startup oil pump goes out doorway, described first main oil pump pipe and described first high voltage startup oil pump pipe are connected to form the first tie point, described first tie point is connected with described Steam Turhine Adjustment security system respectively and described injector connects, described second main oil pump pipe is connected with described second high voltage startup oil pump pipe and forms the second tie point, described second tie point goes out doorway with described high voltage startup fuel pump outlet non-return flap or described high voltage startup oil pump and is connected, described control unit is connected with described high voltage startup fuel pump outlet door.
Further, described judging unit is connected with delayer, and described delayer is connected with the start button of described steam turbine set power system.
Further, described oil passage change-over valve is two-position three-way valve, the side of described oil passage change-over valve is connected with the outlet of described main oil pump, the opposite side of described oil passage change-over valve is connected with the second tie point, the spool side of described oil passage change-over valve has leakage hole, make when the rotor speed value of described steam turbine set power system is less than described predefined value, described spool is in enable possition, the drain tap of described oil passage change-over valve is connected with the outlet of described main oil pump, when the rotor speed value of described steam turbine set power system is more than or equal to described predefined value, described spool is in closed position, described second main oil pump pipe and described second high voltage startup oil pump pipe disconnect.Relative to prior art, a kind of device realizing the steam turbine set power system startup that oil circuit automatically switches provided by the invention, by detection unit detection rotor rotating speed, then judge whether rotor speed is more than or equal to predefined value through judging unit, if then control high voltage startup fuel pump outlet door by control unit to close gradually, and then reduce the oil pump capacity of high voltage startup oil pump, under the oil pressure effect of main oil pump, high voltage startup fuel pump outlet non-return flap is closed, and spool can be pushed into closed position by the oil pressure of main oil pump at this moment, high voltage startup oil pump cannot pass through oil circuit switch fuel feeding, the complete fuel cut-off of high voltage startup oil pump, main oil pump substitutes it and carries out fuel feeding, reach and automatically complete the process that high voltage startup oil pump feed taken over by main oil pump, improve the life-span of the speed control system of steam-turbine unit.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in mode of execution below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of schematic flow sheet realizing the steam turbine set power system starting method that oil circuit automatically switches that Fig. 1 provides for embodiment of the present invention one;
A kind of another schematic flow sheet realizing the steam turbine set power system starting method that oil circuit automatically switches that Fig. 2 provides for embodiment of the present invention two;
A kind of structural representation realizing the steam turbine set power system that oil circuit automatically switches that Fig. 3 provides for embodiment of the present invention three;
A kind of structural representation realizing the device of the steam turbine set power system startup that oil circuit automatically switches that Fig. 4 provides for embodiment of the present invention three.
Wherein, 1, main oil pump; 2, main oil pump outlet non-return door; 3, oil passage change-over valve; 4, high voltage startup oil pump; 5, high voltage startup fuel pump outlet door; 6, high voltage startup fuel pump outlet non-return flap; 7, injector; 8, Steam Turhine Adjustment security system; 10, the rotor of steam turbine set power system; 20, detection unit; 30, judging unit; 40, control unit.
Embodiment
Below in conjunction with the accompanying drawing in embodiment of the present invention, be clearly and completely described the technological scheme in embodiment of the present invention, obviously, described mode of execution is only the present invention's part mode of execution, instead of whole mode of executions.Based on the mode of execution in the present invention, the every other mode of execution that those of ordinary skill in the art obtain, all belongs to the scope of protection of the invention.
Mode of execution one
As shown in Figure 1, a kind of schematic flow sheet of steam turbine set power system starting method realizing oil circuit and automatically switch of providing for embodiment of the present invention one of Fig. 1.
A kind of steam turbine set power system starting method realizing oil circuit and automatically switch provided by the invention.Wherein,
Step S10: when starting described steam turbine set power system, detects the rotor speed of described steam turbine set power system.In the present embodiment, after starting steam turbine set power system, the rotor speed of steam turbine set power system constantly promotes.Because the oil pressure of main oil pump increases along with the continuous lifting of rotor speed, when when the outlet oil pressure of main oil pump reaches startup being the outlet oil pressure of the high voltage startup oil pump of steam turbine set power system fuel feeding, need high voltage startup oil pump feed be transferred to main oil pump fuel feeding.Therefore, need to detect the rotating speed of rotor.In the present embodiment, the rotating speed of detection unit detection rotor by being connected with rotor.Such as, detection unit can be speed probe, by the rotating speed of speed probe detection rotor.
Step S20: the rotor speed value of the described steam turbine set power system detected and predefined value are contrasted.In the present embodiment, steam turbine set power system has judging unit, judging unit is connected with detection unit, to receive the rotor speed value of the steam turbine set power system that detection unit detects, then the rotor speed value of reception and preset predefined value are compared, judge the magnitude relationship between predefined value and the rotor speed value detecting steam turbine set power system.
Be understandable that, when the rotor speed value of steam turbine set power system reaches the size of predefined value, the oil pressure size of main oil pump equals the oil pressure size of high voltage startup oil pump.
Step S30: the rotor speed value of steam turbine set power system is more than or equal to predefined value? in the present embodiment, the rotor speed of the steam turbine set power system of detection and predefined value compare by judging unit.If the rotor speed of the steam turbine set power system detected is more than or equal to predefined value, then go to step S40; If not, then go to step S20, again the rotor speed of steam turbine set power system detected and predefined value are compared.
Be understandable that, judging unit can receive the rotor speed value of the steam turbine set power system of one-time detection unit inspection and judges by time per unit.In some embodiments, judging unit is also connected with delayer, and delayer is connected with the start button of steam turbine set power system.Delayer arranges a delay time t, and when after the start button pressing steam turbine set power system, steam turbine set power system starts.Now delayer carries out time delay, and after time delay delay time t, triggers judging unit and receive the rotor speed value of the steam turbine set power system that detection unit detects and judge.So, greatly can reduce the detection time of detection unit and detect number of times, reducing and occur wrongheaded probability due to fault, improving the stability of detection unit.
Step S40: control described high voltage startup fuel pump outlet door and close gradually, for reducing the oil pressure of described high voltage startup oil pump, until after the closedown of described high voltage startup fuel pump outlet non-return flap, stops controlling described high voltage startup fuel pump outlet door.In the present embodiment, steam turbine set power system also comprises control unit, and control unit is connected with judging unit.When judging unit judges that the rotor speed of the steam turbine set power system detected is more than or equal to predefined value, this information is sent to control unit, and control unit need control high voltage startup oil pump fuel cut-off.In the present embodiment, steam turbine set power system comprises high voltage startup oil pump and goes out doorway and high voltage startup fuel pump outlet non-return flap, high voltage startup oil pump goes out doorway and is connected with high voltage startup fuel pump outlet non-return flap, and high voltage startup fuel pump outlet non-return flap is connected with high voltage startup oil pump.Namely high voltage startup oil pump can cut out and fuel cut-off by high voltage startup fuel pump outlet non-return flap.Control unit controls the closedown gradually of high voltage startup fuel pump outlet door, in the process, the outlet oil pressure of high voltage startup oil pump is declined, until when the outlet oil pressure of high voltage startup oil pump is less than the oil pressure of high voltage startup fuel pump outlet non-return flap opposite side, high voltage startup fuel pump outlet non-return flap is closed, high voltage startup oil pump fuel cut-off.In the present embodiment, high voltage startup fuel pump outlet non-return flap opposite side is connected with main oil pump.When high voltage startup fuel pump outlet non-return flap is closed, control unit stops controlling high voltage startup fuel pump outlet door.
Being understandable that, when judging that the rotor speed value of the steam turbine set power system detected is more than or equal to predefined value, staff can being indicated manually to carry out closing the operation of high voltage startup fuel pump outlet door by tutorial light.And when sensing that high voltage startup fuel pump outlet non-return flap is closed by pressure transducer, again control high voltage startup fuel pump outlet door by the manual stop control unit of tutorial light instruction staff and close gradually.The instruction of twice tutorial light can be distinguished by the tutorial light of different colours.
Be understandable that, in the present embodiment, can, according to the size of the factor determination predefined values such as the working environment of concrete steam turbine set power system and reality, be between 2700 to 2950r/min better.
A kind of steam turbine set power system starting method realizing oil circuit and automatically switch provided by the invention, the steam turbine set power system rotor speed after starting is detected by detection unit, judging unit constantly judges steam turbine set power system rotor speed, until after steam turbine set power system rotor speed is more than or equal to predefined value, control unit controls high voltage startup fuel pump outlet door and closes gradually, and then in the specific moment, the oil pressure at high voltage startup fuel pump outlet place is reduced automatically, utilize the closedown of high voltage startup fuel pump outlet non-return flap, achieve high voltage startup oil pump and automatically transfer high voltage startup oil pump feed to main oil pump fuel feeding when the oil pressure of main oil pump reaches required oil pressure, improve the life-span of the speed control system of steam-turbine unit, by arranging high voltage startup fuel pump outlet door, further improve the probability that high voltage startup fuel pump outlet non-return flap is closed, predefined value, between 2700 to 2950r/min, can adjust the size of predefined value flexibly, predefined value is tallied with the actual situation, and improves the stability of steam turbine set power system.
Mode of execution two
As shown in Figure 2, a kind of another schematic flow sheet of steam turbine set power system starting method realizing oil circuit and automatically switch of providing for embodiment of the present invention two of Fig. 2.
Wherein,
Steps A 10: is in the present embodiment consistent with the step S10 in mode of execution one.
Steps A 20: is in the present embodiment consistent with the step S20 in mode of execution one.
Steps A 30: is in the present embodiment consistent with the step S30 in mode of execution one.
Steps A 40: is in the present embodiment consistent with the step S40 in mode of execution one.
Steps A 50: steam turbine set power system stops? in the present embodiment, according to the rotating speed of Speed sensing device inductiopn rotor.If the rotating speed of rotor becomes stopping from rotation, then the judging unit be connected with Speed sensing device judges that steam turbine set power system stops, and goes to step A60.If judging unit time per unit judges the rotating speed of a Speed sensing device inductiopn rotor, if the rotating speed of rotor does not become stopping from rotation, then return steps A 40.
Be understandable that, pressure inductor can also be set in the outlet of main oil pump.When pressure inductor sense the exit pressure levels of main oil pump equal zero or be zero substantially time, the judging unit be connected with pressure inductor judges that steam turbine set power system stops, and goes to step A60.
Steps A 60: control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.In the present embodiment, the control unit be connected with high voltage startup fuel pump outlet door controls high voltage startup fuel pump outlet door and opens gradually, until high voltage startup fuel pump outlet door is opened completely.
Be understandable that, staff can be indicated to control high voltage startup fuel pump outlet door by tutorial light, the control switch of the openings of sizes for controlling high voltage startup fuel pump outlet door is pulled, further to ensure the stability of steam turbine set power system by staff.
A kind of steam turbine set power system starting method realizing oil circuit and automatically switch provided by the invention, compared with mode of execution one, by increase judgement that whether steam turbine set power system is stopped and after judging the stopping of steam turbine set power system by high voltage startup fuel pump outlet door open size be changed to startup before complete open configuration, so that next time is when starting steam turbine set power system, high voltage startup fuel pump outlet pressure can not form pressure drop behind the door through high voltage startup fuel pump outlet, ensure that high voltage startup oil pump normal fuel injection when again starting, improve the stability of steam turbine set power system further.
Mode of execution three
As a kind of structural representation realizing the steam turbine set power system that oil circuit automatically switches that Fig. 3 and Fig. 4, Fig. 3 provide for embodiment of the present invention three; A kind of structural representation realizing the device of the steam turbine set power system startup that oil circuit automatically switches that Fig. 4 provides for embodiment of the present invention three.
A kind of steam turbine set power system realizing oil circuit and automatically switch provided by the invention, steam turbine set power system comprises main oil pump 1, main oil pump outlet non-return door 2, oil passage change-over valve 3, high voltage startup oil pump 4, high voltage startup fuel pump outlet door 5, high voltage startup fuel pump outlet non-return flap 6, injector 7 and Steam Turhine Adjustment security system 8, main oil pump 1 is connected with the first main oil pump pipe and the second main oil pump pipe respectively, first main oil pump pipe is provided with main oil pump outlet non-return door 2, second main oil pump pipe is provided with oil passage change-over valve 3, high voltage startup oil pump 4 is connected with the first high voltage startup oil pump pipe and the second high voltage startup oil pump pipe respectively, first high voltage startup oil pump pipe is provided with high voltage startup fuel pump outlet non-return flap 6 successively and high voltage startup oil pump goes out doorway 5, first main oil pump pipe and the first high voltage startup oil pump pipe are connected to form the first tie point, first tie point is connected with Steam Turhine Adjustment security system 8 respectively and injector 7 connects, second main oil pump pipe is connected with the second high voltage startup oil pump pipe and forms the second tie point, second tie point is connected with high voltage startup fuel pump outlet non-return flap 6 or high voltage startup fuel pump outlet door 5, control unit is connected with high voltage startup fuel pump outlet door 5.
Concrete, the end that the first main oil pump pipe and the second main oil pump pipe are positioned at same one end is connected to a node and is connected with main oil pump 1 by this node, and the oil that main oil pump 1 is pumped flows into the first main oil pump pipe and the second main oil pump pipe respectively by node.First main oil pump pipe is provided with main oil pump outlet non-return door 2, and is provided with oil passage change-over valve 3 on the second main oil pump pipe.In the present embodiment, the first main oil pump pipe has the first tie point away from the end of main oil pump 1, and this first tie point is divided into two pipelines, and one of them pipeline is connected to Steam Turhine Adjustment security system 8, and another is connected to injector 7.Second main oil pump pipe has the second tie point away from the end of main oil pump 1, and this second tie point is divided into two pipelines, and one of them pipeline is connected on the pipeline that is connected with injector 7 in the first tie point, and another pipeline is connected with high voltage startup oil pump 4.Wherein, the second tie point is connected to pipeline corresponding with on the pipeline that injector 7 connects in the first tie point and there is the high voltage startup fuel pump outlet door 5 and high voltage startup fuel pump outlet non-return flap 6 that set gradually.High voltage startup fuel pump outlet non-return flap 6 is connected with high voltage startup oil pump 4, and high voltage startup fuel pump outlet door 5 is connected with high voltage startup fuel pump outlet non-return flap 6.
See Fig. 4 again, as seen from Figure 4, the rotor 10 of steam turbine set power system is connected with detection unit 20; Detection unit 20 is connected with the rotor 10 of steam turbine set power system and judging unit 30 respectively; Judging unit 30 is connected with detection unit 20 and control unit 40 respectively; Control unit 40 is connected with judging unit 30.
In order to further explain the working principle of steam turbine set power system starting method of the present invention, as described below:
When starting steam turbine set power system, the rotor 10 of steam turbine set power system rotates, and the oil pressure of the main oil pump 1 be connected with rotor increases with the increase of rotor speed.And then the pressure oil that main oil pump 1 produces is divided into two-way through node, first main oil pump pipe of leading up to also extruding is positioned at the main oil pump outlet non-return door 2 of the first main oil pump pipe, but when the turn up of rotor is less than predefined value, the force value that main oil pump 1 produces pressure oil is not enough to main oil pump outlet non-return door 2 to push open, and then causes the oil in the first main oil pump pipe cannot flow to injector 7 and Steam Turhine Adjustment security system 8 by main oil pump outlet non-return door 2.Same, in the second main oil pipe, the oil pressure of oil is not enough to promote the spool in oil passage change-over valve 3, make the interior oil of the second main oil pipe by being positioned at the leakage hole draining of spool side, and then oil also cannot pass through oil circuit switch 3.
In above process, detection unit 20 detects rotor 10 rotating speed of steam turbine set power system, and judge whether rotor 10 rotating speed of steam turbine set power system is more than or equal to predefined value by the judging unit 30 be connected with detection unit 20, if, the oil pressure that then main oil pump 1 produces backs down the spool in main oil pump outlet non-return door 2 and oil passage change-over valve 3, make the oil exported by main oil pump 1 by main oil pump outlet non-return door 2 to the first tie point, the spool of oil passage change-over valve 3 is pushed into the state of closedown by the oil exported by main oil pump 1.Reduced gradually by the opening controlling high voltage startup fuel pump outlet door 5, to make high voltage startup oil pump 4 by declining to the oil pressure of high voltage startup fuel pump outlet door 5 direction flowing after high voltage startup fuel pump outlet non-return flap 6, and then make the oil pressure at high voltage startup fuel pump outlet non-return flap 6 two ends occur reversing, namely there is the first tie point oil pressure be connected on the pipeline of injector 7 to be greater than the oil pressure of high voltage startup oil pump 4, and then high voltage startup fuel pump outlet non-return flap 6 is closed.So, high voltage startup oil pump 4 stops outside fuel feeding.High voltage startup oil pump 4 pairs of injectors 7 taken over by main oil pump 1 and Steam Turhine Adjustment security system 8 provides the oil with certain oil pressure.
Be understandable that, staff can be indicated to control high voltage startup fuel pump outlet door 5 by tutorial light, the control switch of the openings of sizes for controlling high voltage startup fuel pump outlet door 5 is pulled, further to ensure the stability of steam turbine set power system by staff.
Be understandable that, control unit 40 also comprises recovery unit, and recovery unit starts after steam turbine set power system shuts down, and control high voltage startup fuel pump outlet door 5 returns to the open mode controlled before high voltage startup fuel pump outlet door 5 is closed gradually.
A kind of device realizing the steam turbine set power system startup that oil circuit automatically switches provided by the invention, by detection unit 20 detection rotor rotating speed, then judge whether rotor speed is more than or equal to predefined value through judging unit 30, if then control high voltage startup fuel pump outlet door 5 by control unit 40 to close gradually, and then reduce the oil pump capacity of high voltage startup oil pump 4, under the oil pressure effect of main oil pump 1, high voltage startup fuel pump outlet non-return flap 6 is closed, and spool can be pushed into closed position by the oil pressure of main oil pump 1 at this moment, high voltage startup oil pump 4 cannot pass through oil circuit switch 3 fuel feeding, high voltage startup oil pump 4 is fuel cut-off completely, main oil pump 1 substitutes it and carries out fuel feeding, reach and automatically complete the process that high voltage startup oil pump 4 fuel feeding taken over by main oil pump 1, improve the life-span of the speed control system of steam-turbine unit, by arranging recovery unit, high voltage startup fuel pump outlet door 5 is returned to control the open mode before high voltage startup fuel pump outlet door 5 is closed gradually, the back pressure of high voltage startup oil pump 4 can not be declined because of the high voltage startup fuel pump outlet door 5 arranged, when again starting steam turbine set power system, the fuel feeding effect of high voltage startup oil pump 4 can be ensured, further improve the stability of steam turbine set power system, by the circuit design of such as Fig. 3, realize the fuel feeding carried out voluntarily between high voltage startup oil pump 4 and main oil pump 1 and switch stability, by arranging oil passage change-over valve 3, the spool of oil passage change-over valve 3 is closed by the oil pressure that the oil that before making it have release switching fuel feeding, main oil pump 1 produces also can overcome high voltage startup oil pump 4 generation after switching fuel feeding, stop draining, further achieve the automation of fuel feeding handoff procedure, predefined value is arranged between 2700 to 2950r/min, improves accommodation and the operation stability of steam turbine set power system.
Mode of execution four
The difference of present embodiment and mode of execution three is that controlling high voltage startup fuel pump outlet door closes gradually, for reducing the oil pressure of high voltage startup oil pump, until after the closedown of high voltage startup fuel pump outlet non-return flap, after stopping controlling high voltage startup fuel pump outlet door, also comprise and stop described high voltage startup oil pump, then control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
Concrete, judging unit is also connected with high voltage startup fuel pump outlet non-return flap, judges whether high voltage startup fuel pump outlet non-return flap closes; Control unit is connected with judging unit, during for judging that high voltage startup fuel pump outlet non-return flap is closed, stops high voltage startup oil pump, then controls high voltage startup fuel pump outlet door and returns to the open mode controlled before described high voltage startup fuel pump outlet door is closed gradually.
In the present embodiment, at high voltage startup fuel pump outlet non-return flap, pressure inductor can be set away from the side of high voltage startup oil pump, oil pressure according to pressure inductor induction judges whether high voltage startup fuel pump outlet door state closes, if judge, high voltage startup fuel pump outlet door is closed condition, stops high voltage startup oil pump.Then control high voltage startup fuel pump outlet door and return to the open mode controlled before high voltage startup fuel pump outlet door is closed gradually.
A kind of device realizing the steam turbine set power system startup that oil circuit automatically switches provided by the invention, in time high voltage startup oil pump is stopped by judging high voltage startup fuel pump outlet door state whether to close, avoid the idle running of high voltage startup oil pump or avoid the idle running time of high voltage startup oil pump, improve the stability of system; And for mode of execution three, control high voltage startup fuel pump outlet door more fast return to the open mode controlled before high voltage startup fuel pump outlet door is closed gradually, improve the speed of response of system.
It should be noted last that, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (10)
1. the steam turbine set power system starting method realizing oil circuit and automatically switch, described steam turbine set power system comprises high voltage startup fuel pump outlet door and high voltage startup fuel pump outlet non-return flap, described high voltage startup fuel pump outlet door is connected with described high voltage startup fuel pump outlet non-return flap, described high voltage startup fuel pump outlet door or described high voltage startup fuel pump outlet non-return flap are connected with described high voltage startup oil pump, it is characterized in that, comprise the steps:
Step a: when starting described steam turbine set power system, detects the rotor speed of described steam turbine set power system;
Step b: the rotor speed value of the described steam turbine set power system detected and predefined value are contrasted, judges whether the rotor speed value of the described steam turbine set power system detected is more than or equal to described predefined value, if so, then goes to step c;
Step c: control described high voltage startup fuel pump outlet door and close gradually, for reducing the oil pressure of described high voltage startup oil pump, until after the closedown of described high voltage startup fuel pump outlet non-return flap, stops controlling described high voltage startup fuel pump outlet door.
2. realize the steam turbine set power system starting method that oil circuit automatically switches as claimed in claim 1, it is characterized in that: also comprise after described step c when stopping described steam turbine set power system, controlling described high voltage startup fuel pump outlet door and returning to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
3. realize the steam turbine set power system starting method that oil circuit automatically switches as claimed in claim 1, it is characterized in that: also comprise after described step c and stop described high voltage startup oil pump, then control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
4. the steam turbine set power system starting method realizing oil circuit automatic switchover as described in any one of Claims 2 or 3, it is characterized in that, described predefined value is between 2700 to 2950r/min.
5. realize a device for the steam turbine set power system startup that oil circuit automatically switches, it is characterized in that: comprising:
High voltage startup fuel pump outlet door: be arranged in described steam turbine set power system, for controlling the rise and fall of the high voltage startup fuel pump outlet place oil pressure of described steam turbine set power system;
Detection unit: be connected with the rotor of described steam turbine set power system, during for starting described steam turbine set power system, detects the rotor speed of described steam turbine set power system;
Judging unit: described judging unit is connected with described detection unit, the rotor speed value of the described steam turbine set power system detected and predefined value are contrasted, judges whether the rotor speed value of the described steam turbine set power system detected is more than or equal to described predefined value;
Control unit: described control unit is connected with described judging unit, for when the rotor speed value of described steam turbine set power system is more than or equal to described predefined value, control described high voltage startup fuel pump outlet door to close gradually, for reducing the oil pressure of described high voltage startup oil pump, until after the high voltage startup fuel pump outlet non-return flap closedown of described steam turbine set power system, stop controlling described high voltage startup fuel pump outlet door.
6. realize the device of the steam turbine set power system startup that oil circuit automatically switches as claimed in claim 5, it is characterized in that, described control unit comprises recovery unit, described recovery unit is connected with described detection unit, when described detection unit detects that described steam turbine set power system transfers halted state to by operating condition, control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
7. realize the device of the steam turbine set power system startup that oil circuit automatically switches as claimed in claim 5, it is characterized in that,
Judging unit: described judging unit is connected with described high voltage startup fuel pump outlet non-return flap, judges whether described high voltage startup fuel pump outlet non-return flap closes;
Control unit: described control unit is connected with described judging unit, during for judging that described high voltage startup fuel pump outlet non-return flap is closed, stop high voltage startup oil pump, then control described high voltage startup fuel pump outlet door and return to open mode before described control described high voltage startup fuel pump outlet door is closed gradually.
8. the device realizing the steam turbine set power system startup that oil circuit automatically switches as described in any one of claim 6 to 7, it is characterized in that, described steam turbine set power system comprises main oil pump, main oil pump outlet non-return door, oil passage change-over valve, high voltage startup oil pump, high voltage startup fuel pump outlet door, high voltage startup fuel pump outlet non-return flap, injector and Steam Turhine Adjustment security system, described main oil pump is connected with the first main oil pump pipe and the second main oil pump pipe respectively, described first main oil pump pipe is provided with main oil pump outlet non-return door, described second main oil pump pipe is provided with oil passage change-over valve, described high voltage startup oil pump is connected with the first high voltage startup oil pump pipe and the second high voltage startup oil pump pipe respectively, described first high voltage startup oil pump pipe is provided with described high voltage startup fuel pump outlet non-return flap and described high voltage startup fuel pump outlet door successively, described first main oil pump pipe and described first high voltage startup oil pump pipe are connected to form the first tie point, described first tie point is connected with described Steam Turhine Adjustment security system respectively and described injector connects, described second main oil pump pipe is connected with described second high voltage startup oil pump pipe and forms the second tie point, described second tie point is connected with described high voltage startup fuel pump outlet non-return flap or described high voltage startup fuel pump outlet door, described control unit is connected with described high voltage startup fuel pump outlet door.
9. realize the device of the steam turbine set power system startup that oil circuit automatically switches as claimed in claim 6, it is characterized in that, described judging unit is connected with delayer, and described delayer is connected with the start button of described steam turbine set power system.
10. realize the device of the steam turbine set power system startup that oil circuit automatically switches as claimed in claim 8, it is characterized in that, described oil passage change-over valve is two-position three-way valve, the side of described oil passage change-over valve is connected with the outlet of described main oil pump, the opposite side of described oil passage change-over valve is connected with the second tie point, the spool side of described oil passage change-over valve has leakage hole, make when the rotor speed value of described steam turbine set power system is less than described predefined value, described spool is in enable possition, the drain tap of described oil passage change-over valve is connected with the outlet of described main oil pump, when the rotor speed value of described steam turbine set power system is more than or equal to described predefined value, described spool is in closed position, described second main oil pump pipe and described second high voltage startup oil pump pipe disconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341667.8A CN104153829B (en) | 2014-07-17 | 2014-07-17 | Realize steam turbine set power system starting method and the device of oil circuit automatic switchover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341667.8A CN104153829B (en) | 2014-07-17 | 2014-07-17 | Realize steam turbine set power system starting method and the device of oil circuit automatic switchover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104153829A CN104153829A (en) | 2014-11-19 |
| CN104153829B true CN104153829B (en) | 2015-11-18 |
Family
ID=51879438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341667.8A Active CN104153829B (en) | 2014-07-17 | 2014-07-17 | Realize steam turbine set power system starting method and the device of oil circuit automatic switchover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104153829B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483201A (en) * | 2020-11-11 | 2021-03-12 | 杭州国能汽轮工程有限公司 | Oil supply system using oil injector as power source |
| CN117239676B (en) * | 2023-11-15 | 2024-03-15 | 清华大学 | Control circuit and method for high-purity germanium detector and high-purity germanium detector |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585411A (en) * | 1981-06-30 | 1983-01-12 | Toshiba Corp | Starter for steam turbine |
| JPS58152107A (en) * | 1982-03-08 | 1983-09-09 | Hitachi Ltd | Method and device for synchronizing two shafts of steam turbine |
| CN86202649U (en) * | 1986-04-28 | 1987-04-08 | 东北电力学院 | Microcomputer and stepping motor controller for small steam turbines |
| CN2703873Y (en) * | 2003-11-07 | 2005-06-08 | 东方汽轮机厂 | Oil-way main-break protective velve assembly for steam turbine safety system |
| CN201363168Y (en) * | 2009-03-19 | 2009-12-16 | 昆明钢铁集团有限责任公司 | Steam turbine oil line controlling device |
| CN201763400U (en) * | 2010-09-25 | 2011-03-16 | 武汉钢铁(集团)公司 | Steam turbine oil supplying device |
| CN102080579A (en) * | 2010-12-10 | 2011-06-01 | 中国广东核电集团有限公司 | Method and device for controlling starting and stopping of turbo generator set of nuclear power plant, and digital control system (DCS) |
| CN102102692A (en) * | 2010-11-22 | 2011-06-22 | 长沙瑞巢机械有限公司 | Hydraulic oil circuit automatic switching device |
| CN202483642U (en) * | 2012-03-06 | 2012-10-10 | 山西省电力公司电力科学研究院 | Master control system of steam turbine of large-scale thermal power generating unit |
-
2014
- 2014-07-17 CN CN201410341667.8A patent/CN104153829B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS585411A (en) * | 1981-06-30 | 1983-01-12 | Toshiba Corp | Starter for steam turbine |
| JPS58152107A (en) * | 1982-03-08 | 1983-09-09 | Hitachi Ltd | Method and device for synchronizing two shafts of steam turbine |
| CN86202649U (en) * | 1986-04-28 | 1987-04-08 | 东北电力学院 | Microcomputer and stepping motor controller for small steam turbines |
| CN2703873Y (en) * | 2003-11-07 | 2005-06-08 | 东方汽轮机厂 | Oil-way main-break protective velve assembly for steam turbine safety system |
| CN201363168Y (en) * | 2009-03-19 | 2009-12-16 | 昆明钢铁集团有限责任公司 | Steam turbine oil line controlling device |
| CN201763400U (en) * | 2010-09-25 | 2011-03-16 | 武汉钢铁(集团)公司 | Steam turbine oil supplying device |
| CN102102692A (en) * | 2010-11-22 | 2011-06-22 | 长沙瑞巢机械有限公司 | Hydraulic oil circuit automatic switching device |
| CN102080579A (en) * | 2010-12-10 | 2011-06-01 | 中国广东核电集团有限公司 | Method and device for controlling starting and stopping of turbo generator set of nuclear power plant, and digital control system (DCS) |
| CN202483642U (en) * | 2012-03-06 | 2012-10-10 | 山西省电力公司电力科学研究院 | Master control system of steam turbine of large-scale thermal power generating unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104153829A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105298735B (en) | A kind of safe and reliable scaled bulb tubular hydraulic generator is opened, halt control method | |
| CN104533767B (en) | Compressor start control method | |
| WO2010115338A1 (en) | Zero-disturbance switching method for pipeline transportation standby pump | |
| KR102046516B1 (en) | Intelligent sea water cooling system | |
| CN205369369U (en) | Water supply system | |
| CN104153829B (en) | Realize steam turbine set power system starting method and the device of oil circuit automatic switchover | |
| CN104696286A (en) | Device for emergency operation of actuators | |
| CN104153830A (en) | Control method and control system for water feed pump turbine | |
| CN106685271A (en) | Running state control method of brushless double-fed motor | |
| CN104832977B (en) | System and method for adjusting pressure of heat supply pipe | |
| CN104500378A (en) | Compressor starting control device | |
| JP5163830B1 (en) | Pump operation control method and operation control apparatus | |
| EP3123003A1 (en) | Combined cycle gas turbine plant | |
| JP5499742B2 (en) | Water control valve control device | |
| CN104267677A (en) | Real-time display method for gas turbine sequential control step sequence and information | |
| CN206769966U (en) | Small turbine low pressure steam-supplying system | |
| JP2016008522A (en) | Lubricant supply device, pump test starter, and pump test starting method | |
| CN105977918A (en) | Motor protection relay and method for starting motor of motor protection relay | |
| US10547254B2 (en) | Apparatus for controlling multiple inverters and inverter system including the same | |
| CN104917347B (en) | A kind of ECM motors and its HVAC system of application | |
| CN208121871U (en) | Large and medium-sized hydroelectric power plant's technical water supply dual redundant construction of switch | |
| KR20150134804A (en) | Cooling System For Marine Engine Having Protect Erosion in the Low Temperature to Low-Load Operation of Main Engine | |
| CN202347302U (en) | Door opening protection circuit for washing machine | |
| CN106968728A (en) | A kind of control method of unattended steam turbine | |
| CN208046491U (en) | Control system for controlling the startup of more pump motors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |