CN103670523A - Generating device and control method thereof - Google Patents
Generating device and control method thereof Download PDFInfo
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- CN103670523A CN103670523A CN201310383508.XA CN201310383508A CN103670523A CN 103670523 A CN103670523 A CN 103670523A CN 201310383508 A CN201310383508 A CN 201310383508A CN 103670523 A CN103670523 A CN 103670523A
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- rotating speed
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- decompressor
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- 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
- F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
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- 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
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/18—Lubricating arrangements
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention provides a generating device comprising a circulating flow path which connects an evaporator for evaporation of a working medium, an expander expanding the working medium, an oil separator separating lubricating oil discharged from the expander together with the working medium, a condenser condensing the working medium and a working medium pump conveying the working medium condensed by the condenser to the evaporator in series, a generator which is driven by means of expansion of the working medium in the expander, a lubricating oil pump conveying the lubricating oil in the oil separator to the expander, a temperature sensor detecting the temperature of the lubricating oil in the oil separator, and a control mechanism which drives the lubricating oil pump and then drives the working medium pump when the temperature detected by the temperature sensor becomes a default valve.
Description
Technical field
The present invention relates to a kind of electricity generating device and controlling method thereof.
Background technique
In the past, known a kind of retrieving from the heat extraction of the various device of factory etc. the electricity generating device that utilizes the energy of the heat extraction of this recovery to generate electricity.In such electricity generating device, TOHKEMY discloses a kind of binary electricity generating device for No. 2003-161114, has utilized the electricity generating device of the rankine cycle of having used lower boiling working medium in order to drive decompressor.This generator possesses: circulation stream, be connected in series make working medium evaporation vaporizer, make decompressor that above-mentioned working medium expands, by the oil separator of the lubricating oil separation of discharging together with above-mentioned working medium from above-mentioned decompressor, make the coagulator that above-mentioned working medium condenses, the working medium pump that the working medium being condensed by above-mentioned coagulator is carried to above-mentioned vaporizer; Generator, expands in above-mentioned decompressor by above-mentioned working medium and driven; And lubricating pump, the lubricant oil in above-mentioned oil separator is carried to above-mentioned decompressor.
Usually, before the startup of electricity generating device, be stored in the temperature step-down of the lubricant oil in oil separator, so this oil body is high.Therefore, if drive above-mentioned lubricating pump and above-mentioned working medium pump under this state, sometimes can not be successfully to drive the degree of decompressor to supply with the lubricant oil of sufficient quantity to the bearing portion of this decompressor.In this case, likely produce bearing portion sintering bad of decompressor.
The electricity generating device of the invention of recording in above-mentioned patent gazette is not recorded any for this starting method, therefore, if former state ground starts this electricity generating device, as mentioned above, may produce bearing portion sintering bad of decompressor.
Summary of the invention
The sintering of the decompressor while the object of the invention is to prevent electricity generating device startup.
As the means that address the above problem, the invention provides a kind of electricity generating device, possess: circulation stream, be connected in series make working medium evaporation vaporizer, make decompressor that above-mentioned working medium expands, by the oil separator of the lubricating oil separation of discharging together with above-mentioned working medium from above-mentioned decompressor, make the coagulator that above-mentioned working medium condenses and the working medium pump that the working medium being condensed by above-mentioned coagulator is carried to above-mentioned vaporizer; Generator, expands in above-mentioned decompressor by above-mentioned working medium and driven; Lubricating pump, carries the lubricant oil in above-mentioned oil separator to above-mentioned decompressor; Temperature transducer, detects the temperature of the lubricant oil in above-mentioned oil separator; And control mechanism, carry out following startup control: drive above-mentioned lubricating pump, afterwards, when the temperature being detected by said temperature sensor becomes set value, drive above-mentioned working medium pump.
According to electricity generating device of the present invention, can prevent the sintering of decompressor when it starts.Particularly, above-mentioned control mechanism carries out following startup control: drive above-mentioned lubricating pump, afterwards, when the temperature being detected by said temperature sensor becomes set value, while supplying with under the degree of the lubricant oil that successfully drives the required sufficient amount of above-mentioned decompressor to this decompressor that this oil body declines, drive above-mentioned working medium pump.Thus, when the working medium circulating in above-mentioned circulation stream in the driving by by above-mentioned working medium pump drives above-mentioned decompressor, to this decompressor, supply with the lubricant oil that successfully drives the required sufficient amount of this decompressor, therefore, can prevent the sintering of this decompressor.
In addition, the heating of this lubricating pump during due to the driving of above-mentioned lubricating pump, the temperature of the lubricant oil in above-mentioned oil separator rises fully.
In this case, preferably also possess the heating machanism of the lubricant oil in the above-mentioned oil separator of heating, above-mentioned control mechanism is in above-mentioned startup is controlled, in the driving of above-mentioned lubricating pump or drive the control of above-mentioned heating machanism before and after it.
So, can shorten until the temperature of the above-mentioned lubricant oil being detected by said temperature sensor reaches the time of set value.
And, in the present invention, above-mentioned control mechanism also can carry out following control: in above-mentioned startup is controlled, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises and makes the rotating speed of above-mentioned working medium pump increase gradually, in given time, with constant speed rotating speed, drive above-mentioned working medium pump, after above-mentioned given time, again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump.
So, can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.Particularly, above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises, make the rotating speed of above-mentioned working medium pump increase gradually until become constant speed rotating speed, the rotating speed of above-mentioned working medium pump becomes after above-mentioned constant speed rotating speed, in given time, with this constant speed rotating speed, drive above-mentioned working medium pump, therefore, can obtain from above-mentioned generator the generated energy of the amount corresponding with the rotating speed of working medium pump.Now, to above-mentioned decompressor, supply with the lubricant oil of sufficient amount, therefore the sintering of this decompressor does not occur.And the time of rotating with constant speed rotating speed maintains given time, so the system stability of this device.Afterwards, above-mentioned control mechanism carries out following control: again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump, therefore, the second large generated energy of generated energy that can obtain from generator when above-mentioned generator obtains rotating with above-mentioned constant speed rotating speed than working medium pump, this second generated energy is with the driving of working medium pump by under this second rotating speed and the flow of the working medium circulating, this working medium drives the generated energy of the corresponding amount of the driving force of above-mentioned decompressor.Thus, can prevent the sintering of above-mentioned decompressor, can make efficiently generated energy increase simultaneously and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.
Or, above-mentioned control mechanism also can carry out following control: in above-mentioned startup is controlled, until the temperature being detected by said temperature sensor becomes the second high value of the first value that is compared to above-mentioned set value, with the first rotating speed, drive the rotating speed of above-mentioned working medium pump, when the temperature being detected by said temperature sensor becomes above-mentioned the second value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump.
Even like this, also can prevent the sintering of above-mentioned decompressor, make efficiently generated energy increase simultaneously and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.Particularly, above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, while becoming the first value as set value from the temperature being detected by said temperature sensor, with the first rotating speed, drive above-mentioned working medium pump, therefore, can obtain with the driving of working medium pump by this first rotating speed and the flow of the working medium circulating, this working medium drives the first generated energy of the corresponding amount of the driving force of above-mentioned decompressor from above-mentioned generator.Now, to above-mentioned decompressor, supply with the lubricant oil of sufficient amount, therefore the sintering of this decompressor does not occur.And, above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, when the temperature being detected by said temperature sensor becomes than high the second value of above-mentioned the first value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump, therefore, can obtain second generated energy larger than above-mentioned the first generated energy from above-mentioned generator, this second generated energy is with the driving of working medium pump by under this second rotating speed and the flow of the working medium circulating, this working medium drives the generated energy of the corresponding amount of the driving force of above-mentioned decompressor.Thus, can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.
In this case, preferably also possess: bypass flow path, connects stream between above-mentioned decompressor and above-mentioned vaporizer and the stream between above-mentioned decompressor and above-mentioned oil separator; And bypass valve, be arranged in this bypass flow path, above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, during above-mentioned working medium pump drives with above-mentioned the first rotating speed, open above-mentioned bypass valve, during above-mentioned working medium pump drives with above-mentioned the second rotating speed, close above-mentioned bypass valve.
So, can prevent the sintering of above-mentioned decompressor, and can make the temperature of above-mentioned lubricant oil rise to as soon as possible above-mentioned the second value.Particularly, during above-mentioned working medium pump drives with the first rotating speed, until during the temperature of the lubricant oil being detected by said temperature sensor reaches above-mentioned the second value, open above-mentioned bypass valve, therefore, a part for the working medium circulating in above-mentioned circulation stream not via above-mentioned decompressor via above-mentioned bypass flow path, with from above-mentioned decompressor is discharged, the lubricant oil that flows into before above-mentioned oil separator collaborates.At this, the temperature of above-mentioned working medium is owing to declining via above-mentioned decompressor, and the temperature of therefore having passed through the lubricant oil of decompressor together with this working medium also declines, but the temperature of this working medium declines hardly when not via above-mentioned decompressor.Thus, by designing above-mentioned bypass flow path, for from above-mentioned decompressor is discharged, flow into the lubricant oil before above-mentioned oil separator, can make to have with flow into the roughly the same temperature of working medium before above-mentioned decompressor, the working medium of the temperature higher than the working medium via after above-mentioned decompressor collaborates.Thus, the temperature of above-mentioned lubricant oil rises to above-mentioned the second value as soon as possible.
And during above-mentioned bypass valve is opened, a part for working medium is via above-mentioned bypass flow path, therefore, a part for the working medium only circulating in above-mentioned circulation stream is via above-mentioned decompressor.That is, compare with the situation that above-mentioned bypass flow path is not set, drive the driving force of above-mentioned decompressor constant large, be therefore easy to prevent the sintering of this decompressor.
And, the invention provides a kind of controlling method of electricity generating device, above-mentioned electricity generating device possesses: circulation stream, be connected in series make working medium evaporation vaporizer, make decompressor that above-mentioned working medium expands, by the oil separator of the lubricating oil separation of discharging together with above-mentioned working medium from above-mentioned decompressor, make the coagulator that above-mentioned working medium condenses and the working medium pump that the working medium being condensed by above-mentioned coagulator is carried to above-mentioned vaporizer; Generator, expands in above-mentioned decompressor by above-mentioned working medium and driven; Lubricating pump, carries the lubricant oil in above-mentioned oil separator to above-mentioned decompressor; And temperature transducer, detecting the temperature of the lubricant oil in above-mentioned oil separator, the controlling method of this electricity generating device comprises: lubricating pump actuation step, drives above-mentioned lubricating pump; And working medium pump actuation step, when becoming set value, the temperature being detected by said temperature sensor drives above-mentioned working medium pump.
According to controlling method of the present invention, the sintering of the decompressor in the time of can preventing the startup of electricity generating device.Particularly, this controlling method comprises: lubricating pump actuation step, drives above-mentioned lubricating pump; And working medium pump actuation step, when the temperature being detected by said temperature sensor becomes set value, to this decompressor, supply with under the degree of the lubricant oil that successfully drives the required sufficient amount of above-mentioned decompressor when this oil body declines, drive above-mentioned working medium pump.Thus, when the working medium circulating in above-mentioned circulation stream in the driving by by above-mentioned working medium pump drives above-mentioned decompressor, to this decompressor, supply with the lubricant oil that successfully drives the required sufficient amount of this decompressor, therefore, can prevent the sintering of this decompressor.
In this case, also can be in above-mentioned working medium pump actuation step, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises and makes the rotating speed of above-mentioned working medium pump increase gradually, in given time, with constant speed rotating speed, drive above-mentioned working medium pump, after above-mentioned given time, again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump.
So, can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.Particularly, in above-mentioned working medium pump actuation step, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises, make the rotating speed of above-mentioned working medium pump increase gradually until become constant speed rotating speed, the rotating speed of above-mentioned working medium pump becomes after above-mentioned constant speed rotating speed, in given time, with this constant speed rotating speed, drive above-mentioned working medium pump, therefore, can obtain from above-mentioned generator the generated energy of the amount corresponding with the rotating speed of working medium pump.Now, to above-mentioned decompressor, supply with the lubricant oil of sufficient amount, therefore the sintering of this decompressor does not occur.And, because the time with the rotation of constant speed rotating speed maintains given time, so the system stability of this device.Afterwards, again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump, therefore, the second large generated energy of generated energy that can obtain from generator when above-mentioned generator obtains rotating with above-mentioned constant speed rotating speed than working medium pump, this second generated energy is with the driving of working medium pump by under this second rotating speed and the flow of the working medium circulating, this working medium drives the generated energy of the corresponding amount of the driving force of above-mentioned decompressor.Thus, can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.Or, also can be in above-mentioned working medium pump actuation step, until the temperature being detected by said temperature sensor becomes the second high value of the first value that is compared to above-mentioned set value, with the first rotating speed, drive the rotating speed of above-mentioned working medium pump, when the temperature being detected by said temperature sensor becomes above-mentioned the second value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump.
Even like this, also can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.Particularly, in above-mentioned working medium pump actuation step, when the temperature being detected by said temperature sensor becomes the first value as set value, with the first rotating speed, drive above-mentioned working medium pump, therefore, can obtain with the driving of working medium pump by this first rotating speed and the flow of the working medium circulating, this working medium drives the first generated energy of the corresponding amount of the driving force of above-mentioned decompressor from above-mentioned generator.Now, to above-mentioned decompressor, supply with the lubricant oil of sufficient amount, therefore the sintering of this decompressor does not occur.And, in this working medium pump actuation step, when the temperature being detected by said temperature sensor becomes than high the second value of above-mentioned the first value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump, therefore, can obtain second generated energy larger than above-mentioned the first generated energy from above-mentioned generator, this second generated energy is with the driving of working medium pump by under this second rotating speed and the flow of the working medium circulating, this working medium drives the generated energy of the corresponding amount of the driving force of above-mentioned decompressor.Thus, can prevent the sintering of above-mentioned decompressor, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.
And in this case, preferred above-mentioned electricity generating device also possesses: bypass flow path, connects stream between above-mentioned decompressor and above-mentioned vaporizer and the stream between above-mentioned decompressor and above-mentioned oil separator; And bypass valve, be arranged in this bypass flow path, in above-mentioned working medium pump actuation step, during driving with above-mentioned the first rotating speed, above-mentioned working medium pump opens above-mentioned bypass valve, during driving with above-mentioned the second rotating speed, above-mentioned working medium pump closes above-mentioned bypass valve.
So, can prevent the sintering of above-mentioned decompressor, and can make the temperature of above-mentioned lubricant oil rise to as soon as possible above-mentioned the second value.Particularly, during above-mentioned working medium pump drives with above-mentioned the first rotating speed, until during the temperature of the lubricant oil being detected by said temperature sensor reaches above-mentioned the second value, open above-mentioned bypass valve, therefore, a part for the working medium circulating in above-mentioned circulation stream not via above-mentioned decompressor via above-mentioned bypass flow path, with from above-mentioned decompressor is discharged, the lubricant oil that flows into before above-mentioned oil separator collaborates.At this, the temperature of above-mentioned working medium is owing to declining via above-mentioned decompressor, and the temperature of therefore having passed through the lubricant oil of decompressor together with this working medium also declines, but the temperature of this working medium declines hardly when not via above-mentioned decompressor.Thus, by designing above-mentioned bypass flow path, for from above-mentioned decompressor is discharged, flow into the lubricant oil before above-mentioned oil separator, can make to have with flow into the roughly the same temperature of working medium before above-mentioned decompressor, the working medium of the temperature higher than the working medium via after above-mentioned decompressor collaborates.Thus, the temperature of above-mentioned lubricant oil rises to above-mentioned the second value as soon as possible.
And during above-mentioned bypass valve is opened, a part for working medium is via above-mentioned bypass flow path, therefore, a part for the working medium only circulating in above-mentioned circulation stream is via above-mentioned decompressor.That is, compare with the situation that above-mentioned bypass flow path is not set, drive the driving force of above-mentioned decompressor constant large, be therefore easy to prevent the sintering of this decompressor.
As mentioned above, according to the present invention, the sintering of the decompressor in the time of can preventing the startup of electricity generating device.
Accompanying drawing explanation
Fig. 1 is the skeleton diagram of structure that the electricity generating device of the first mode of execution of the present invention is shown.
Fig. 2 is the flow chart of the control action when the startup of above-mentioned electricity generating device is described.
Fig. 3 is the chart of Control the content of rotating speed that the working medium pump of the second mode of execution of the present invention is shown.
Fig. 4 is the chart of variation of Control the content of rotating speed that the working medium pump of the second mode of execution is shown.
Embodiment
(the first mode of execution)
Electricity generating device and the controlling method thereof of the first mode of execution of the present invention are described with reference to Fig. 1 and Fig. 2.
Fig. 1 illustrates the structure of the electricity generating device of present embodiment.Particularly, this electricity generating device possesses circulation stream 10, the generator 20 of working medium circulation, oily stream 30, the lubricating pump 31 of lubrication oil circulation, the temperature transducer 32 of temperature that detects lubricant oil and the control mechanism 50 that carries out various controls.And this electricity generating device preferably possesses heating machanism 33, bypass flow path 40, is arranged on the bypass valve V2 in this bypass flow path.In addition, the interior circulation of circulation stream 10 has the working medium lower than water boiling point (for example HFC245fa).
Vaporizer 11 makes aqueous working medium evaporation, becomes saturated vapour or superheated vapor.Vaporizer 11 has: thus the mobile flow of operating medium 11a of working medium and the mobile stream 16 of thermal medium supplied with the thermal source from outside are connected this thermal medium mobile thermal medium stream 11b therein.Thereby flow in the working medium and the thermal medium heat exchange evaporation that flows in thermal medium stream 11b of flow of operating medium 11a.As the thermal medium that flows in stream 16, except the steam such as generating from drop shaft (steam well), from the steam that factory etc. discharges, can also enumerate by take steam that heat collector that solar energy is thermal source generates or from take the steam that boiler that biomass or fossil fuel be thermal source generates.
Coagulator 14 condenses the working medium of gaseous state becomes liquid working medium.This coagulator 14 is arranged on the downstream side of the oil separator 13 in circulation stream 10, imports the working medium that is expelled to the gaseous state of circulation stream 10 from oil separator 13.Thereby coagulator 14 has the mobile flow of operating medium 14a of the working medium of gaseous state and the stream 17 mobile with the cooling medium of supplying with from outside and is connected this cooling medium and flows in cooling medium stream 14b wherein.Thereby the working medium that flows in flow of operating medium 14a condenses with the cooling medium heat exchange that flows in cooling medium stream 14b.As the cooling medium that flows in stream 17, for example, enumerate the cooling water by cooling tower recirculation.
Working medium pump 15 is arranged on the downstream side (between vaporizer 11 and coagulator 14) of the coagulator 14 in circulation stream 10, for making working medium in the interior circulation of circulation stream 10.This working medium pump 15 is forced into set pressure by the liquid working medium being condensed by coagulator 14, and sends to vaporizer 11.As working medium pump 15, be used as rotor to possess the centrifugal pump of impeller and gear pump that rotor is formed by a pair of gear etc.Can drive this working medium pump 15 with rotating speed arbitrarily.
As shown in Figure 1, oily stream 30 is streams of the lubricant oil being stored in oil separator 13 being supplied with to decompressor 12 for again, is the stream of lubricating oil flow.The lubricant oil that is supplied to decompressor 12 possesses between the above-mentioned screw rotor of sealing and the function of the sealed member between above-mentioned screw rotor and above-mentioned rotor chamber.Thus, suppress the decline of the expansion efficiency of working medium.
Lubricating pump 31 is arranged between the oil separator 13 and decompressor 12 in oily stream 30, for the lubricant oil being stored in oil separator 13 is carried to decompressor 12.
Bypass flow path 40 is to connect decompressor 12 in circulation stream 10 and the stream of the stream between vaporizer 11 and the decompressor 12 in circulation stream 10 and the stream between oil separator 13.That is, one end of bypass flow path 40 is connected with vaporizer 11 in circulation stream 10 and the stream between decompressor 12, between the other end and decompressor 12 in circulation stream 10 and oil separator 13, is connected.In this bypass flow path 40, be provided with bypass valve V2.Only, when this bypass valve V2 opens, working medium can flow in bypass flow path 40.
Cut-off valve control device 55, when the value T being detected by temperature transducer 32 becomes the first value T1, is opened cut-off valve V1.
Working medium pump control device 53 is when the value T being detected by temperature transducer 32 becomes the first value T1, with the first rotating speed Rp1, drive working medium pump 15, at the value T being detected by temperature transducer 32, become the predefined value of the second value T2(that is greater than the first value T1) time, using and drive working medium pump 15 as the second rotating speed Rp2 that is greater than the rotating speed of the first rotating speed Rp1.This first value T1 is predefined value as supply with temperature that under the degree of the lubricant oil that successfully drives the required sufficient amount of decompressor 12, this oil body declines to this decompressor 12.
Bypass valve control device 56, when the value T being detected by temperature transducer 32 becomes the first value T1, opens bypass valve V2, when the value T being detected by temperature transducer 32 becomes the second value T2 that is greater than the first value T1, closes bypass valve V2.
The startup control of control mechanism 50 then, is described with reference to Fig. 2.This startup is controlled and is comprised lubricating pump actuation step and working medium pump actuation step.In addition, lubricating pump actuation step means following step ST2, and working medium pump actuation step means following step ST3 ~ step ST12.
Then, when the detected temperatures T of temperature transducer 32 becomes the first value T1 (step ST3), open bypass valve V2(step ST4), and open cut-off valve V1(step ST5), then, with the first rotating speed Rp1, drive working medium pump 15(step ST6).Thus, working medium flows in circulation stream 10 and bypass flow path 40.Now, by by the adjustment of rotational speed of generator 20 being the first rotating speed Rd1(step ST7), can obtain the first generated energy from generator 20.Particularly, its part of working medium that becomes gaseous state via vaporizer 11 is towards decompressor 12, remaining towards bypass flow path 40.The working medium that flows into decompressor 12 expands and makes above-mentioned screw rotor rotation, thereby after this its temperature and pressure drop, discharge from this decompressor 12.Make accordingly the running shaft of generator rotate with the first rotating speed Rd1 with the rotating speed of screw rotor now, thereby can obtain the first generated energy from generator 20.In other words, can obtain with the driving of working medium pump 15 by the first rotating speed Rd1 to the flow of the working medium of decompressor 12 interior inflows from generator 20, this working medium drives the first generated energy of the corresponding amount of the driving force of decompressor 12.On the other hand, the working medium flowing into bypass flow path 40 with flow into this bypass flow path 40 before the temperature of working medium and the roughly the same state of pressure under, in the downstream side of decompressor 12, with the working medium of discharging from this decompressor 12 and lubricant oil interflow.In addition, can carry out in any order these steps ST4 ~ ST7, or, also can all side by side carry out.And, also can omit bypass flow path 40 and bypass valve V2.
After this, in the temperature T being detected by temperature transducer 32, become the second value T2(step ST8 that is greater than the first value T1) time, disconnect heating machanism 33(step ST9), using and drive working medium pump 15(step ST10 as the second rotating speed Rp2 that is greater than the rotating speed of the first rotating speed Rp1), close bypass valve V2(step ST12).Thus, flow into the amount increase of the working medium of decompressor 12.Now, using the adjustment of rotational speed of generator 20, be as the second rotating speed Rd2(step ST11 that is greater than the rotating speed of the first rotating speed Rd1), therefore can obtain second generated energy larger than the first generated energy from generator 20.Particularly, due to bypass valve, V2 closes, so working medium does not flow in bypass flow path 40, only flow in circulation stream 10, and the rotating speed of working medium pump 15 becomes the second rotating speed Rp2 that is greater than the first rotating speed Rp1, therefore, the amount that flows into the working medium of decompressor 12 increases significantly.Therefore, the rotating speed of the screw rotor of decompressor 12 also becomes large.Rotating speed by the screw rotor with now makes the running shaft of generator 20 rotate with the second rotating speed Rd2 accordingly, can obtain second generated energy larger than the first generated energy from generator 20.In other words, can obtain flowing into the driving of working medium pump 15 by the second rotating speed Rp2 the flow of the working medium in decompressor 12 from generator 20, this working medium drives the second generated energy of the corresponding amount of the driving force of decompressor 12.In addition, can carry out in any order these steps ST9 ~ ST12, or, also can all side by side carry out.
As described above, according to the electricity generating device of present embodiment, can prevent the sintering of the decompressor 12 when it starts.Particularly, control mechanism 50 carries out following startup control: after driving lubricating pump 31, when the temperature T being detected by temperature transducer 32 becomes the first value T1, when this oil body declines under degree from the lubricant oil that successfully drives the required sufficient amount of decompressor 12 to this decompressor 12 that supply with, drive working medium pump 15.Thus, when the working medium of circulation drives decompressor 12 in the driving by due to working medium pump 15 and in circulation stream 10, to this decompressor 12, supply with the lubricant oil that successfully drives the required sufficient amount of this decompressor 12, therefore, can prevent the sintering of this decompressor 12.
And, the electricity generating device of present embodiment possesses heating machanism 33, control mechanism 50 is in starting control, carry out roughly side by side driving the control of heating machanism 33 with the driving of lubricating pump 31, therefore can shorten until the temperature T of the lubricant oil being detected by temperature transducer 32 reaches the time of the first value T1.But the startup of heating machanism 33 does not need strictly identical with the startup of lubricating pump 31, also can be slightly in the front and back of the startup of lubricating pump 31.
And, in the present embodiment, control mechanism 50 carries out following control: in starting control, until the temperature T being detected by temperature transducer 32 reaches the second value T2 higher than the first value T1, with the first rotating speed Rp1, drive the rotating speed of working medium pump 15, when the temperature T being detected from temperature transducer 32 becomes the second value T2, to be greater than the second rotating speed Rp2 of the first rotating speed Rp1, drive the rotating speed of working medium pump 15.; control mechanism 50 is; until the temperature T being detected from temperature transducer 32 becomes than the second value T2; make working medium pump 15 rotate (low speed rotation) with the first rotating speed Rp1 relative to low speed; thereby make the rotating speed (rotating speed of the running shaft of generator 20) of above-mentioned screw rotor excessively not increase; when said temperature T becomes the second value T2 (when oil body declines fully); make working medium pump 15 to be greater than the second rotating speed Rp2 rotation (High Rotation Speed) of the first rotating speed Rp1, make the rotating speed (rotating speed of the running shaft of generator 20) of above-mentioned screw rotor increase.Thus, can prevent the sintering of decompressor 12, and can make efficiently generated energy increase and divide a word with a hyphen at the end of a line to the routine running of this electricity generating device.
And, the electricity generating device of present embodiment possesses bypass flow path 40 and bypass valve V2, control mechanism 50 carries out following control: in starting control, during working medium pump 15 drives with the first rotating speed Rp1, open bypass valve V2, during working medium pump 15 drives with the second rotating speed Rp2, close bypass valve V2, therefore can prevent the sintering of decompressor 12, and make the temperature T of lubricant oil rise to as soon as possible the second value T2.Particularly, during working medium pump 15 drives with the first rotating speed Rp1, until during the temperature T of the lubricant oil being detected by temperature transducer 32 reaches the second value T2, bypass valve V2 opens, therefore in circulation stream 10 part for the working medium of circulation not via decompressor 12 via bypass flow path 40, and with from decompressor 12 is discharged, the lubricant oil that flows into before oil separator 13 collaborates.At this, the temperature of working medium is owing to declining via decompressor 12, and therefore the temperature of the lubricant oil by decompressor 12 also declines together with this working medium, but the temperature of this working medium declines hardly when not via decompressor 12.Thus, by bypass flow path 40 is set, for from decompressor 12 is discharged, flow into the lubricant oil before oil separator 13, can make to have with flow into the roughly the same temperature of working medium before decompressor 12, the working medium of the temperature higher than the working medium via after decompressor 12 collaborates.The temperature of lubricant oil rises to the second value T2 as soon as possible thus.
And, because the part of working medium during opening at bypass valve V2 is via bypass flow path 40, therefore, only in circulation stream 10 part for the working medium of circulation via decompressor 12.That is, compare with the situation that bypass flow path 40 is not set, the rotating speed of the screw rotor of decompressor 12 is constant large, is therefore easy to prevent the sintering of this decompressor 12.
(the second mode of execution)
Fig. 3 is the chart of Control the content of rotating speed that the working medium pump of the second mode of execution of the present invention is shown.In this chart, the intersection point of transverse axis and the longitudinal axis is the value T that detected by temperature transducer 32 time while becoming the first value T1.In addition, in the second mode of execution, only the part different from the first mode of execution described, omitted the explanation of structure, effect and the effect identical with the first mode of execution.And, in the present embodiment, the structure identical with the first mode of execution marked to identical symbol.
As shown in Figure 3, when the working medium pump control device 53 of present embodiment becomes the first value T1 from the value T being detected by temperature transducer 32, along with above-mentioned value T rises, make the rotating speed of working medium pump 15 increase gradually until become constant speed rotating speed Rp3, from the rotating speed of working medium pump 15, become constant speed rotating speed Rp3, in given time (until time of the system stability of this device), with this constant speed rotating speed Rp3, drive working medium pump 15.Then, after above-mentioned given time, again make the rotating speed of above-mentioned working medium pump 15 increase gradually from constant speed rotating speed Rp3 with together with the rising of above-mentioned value T, while becoming than high the second value T2 of the first value T1 from above-mentioned value T, with the second rotating speed Rp2 larger than constant speed rotating speed Rp3, drive working medium pump 15.In addition, generator control portion 54 preferably controls the rotating speed of this motor 20, makes the rotating speed of generator 20 consistent with the rotating speed of working medium pump 15.
As mentioned above, in the present embodiment, control mechanism 50 carries out following control: in starting control, while becoming the first value T1 from the temperature T being detected by temperature transducer 32, along with above-mentioned value T rises, make the rotating speed of working medium pump 15 increase gradually until become constant speed rotating speed Rp3, from the rotating speed of working medium pump 15, become constant speed rotating speed Rp3, in given time, with this constant speed rotating speed Rp3, drive working medium pump 15, therefore, can obtain from generator 20 generated energy of the amount corresponding with the rotating speed of working medium pump 15.And the time of rotating with constant speed rotating speed Rp3 maintains given time, so the system stability of this device.
As shown in Figure 4, in the second mode of execution, working medium pump 53 can be also, from the value T being detected by temperature transducer 32, become the first value T1 up to becoming the second value T2, corresponding to the rising of above-mentioned value T, make continuously the rise of rotational speed of working medium pump 15 until the rotating speed of working medium pump 15 becomes the second rotating speed Rp2.In addition,, in the chart of Fig. 4, the intersection point of transverse axis and the longitudinal axis is also the value T that detected by temperature transducer 32 time while becoming the first value T1.
In addition, current disclosed mode of execution, its whole point is all to illustrate for example, should think not to be restrictive mode.Scope of the present invention is not to illustrate by the explanation of above-mentioned mode of execution but as the scope of claim, and comprises and the content of the scope equalization of claim and the whole changes in scope.
For example, in the above-described embodiment, as heating machanism 33, show for example the heater of the form in floodlubrication oil or surround the heater of the form of oil separator 13, but heating machanism 33 is not defined as these.As this heating machanism 33, also can utilize the mobile stream of above-mentioned thermal medium 16.In this case, this stream 16 is configured in oil separator 13 around, make the interior mobile thermal medium of stream 16 can with oil separator 13 in lubricant oil thermo-contact.
And in the above-described embodiment, the downstream side immediately that shows the vaporizer 11 in circulation stream 10 arranges the example of decompressor 12, but between vaporizer 11 that also can be in circulation stream 10 and decompressor 12, superheater is set.
And, in the above-described embodiment, as generator 20, show the example that uses IPM generator, but generator 20 is not limited thereto.As the generator 20 beyond IPM generator, for example influence generator of giving an example out.
And in the above-described embodiment, working medium pump control device 53 is the rotating speed of the control of the value T based on being detected by temperature transducer 32 working medium pump 15 only, but the controlling method of working medium pump control device 53 is not limited thereto.For example, working medium pump control device 53 also can be controlled as follows: must become after the first value T1 at the value T being detected by temperature transducer 32, after the certain hour by timer measuring, the rotating speed of working medium pump 15 becomes the second rotating speed Rp2.That is, working medium pump control device 53 can become after the first value T1 at above-mentioned value T, not the temperature based on lubricant oil and control the rotating speed of working medium pump 15 based on the time.In this case, preferably set as shown in Figure 3 with constant speed rotating speed Rp3 drive working medium pump 15 during.But, also can not set during this period, and along with the time through gradually make working medium pump 15 rise of rotational speed control.
Claims (9)
1. an electricity generating device, possesses:
Circulation stream, be connected in series make working medium evaporation vaporizer, make decompressor that above-mentioned working medium expands, by the oil separator of the lubricating oil separation of discharging together with above-mentioned working medium from above-mentioned decompressor, make the coagulator that above-mentioned working medium condenses and the working medium pump that the working medium being condensed by above-mentioned coagulator is carried to above-mentioned vaporizer;
Generator, expands in above-mentioned decompressor by above-mentioned working medium and driven;
Lubricating pump, carries the lubricant oil in above-mentioned oil separator to above-mentioned decompressor;
Temperature transducer, detects the temperature of the lubricant oil in above-mentioned oil separator; And
Control mechanism, carries out following startup control: drive above-mentioned lubricating pump, afterwards, when the temperature being detected by said temperature sensor becomes set value, drive above-mentioned working medium pump.
2. electricity generating device as claimed in claim 1, is characterized in that,
The heating machanism that also possesses the lubricant oil in the above-mentioned oil separator of heating,
Above-mentioned control mechanism, in above-mentioned startup is controlled, carries out the control of above-mentioned heating machanism of driving in the driving of above-mentioned lubricating pump or before and after it.
3. electricity generating device as claimed in claim 1 or 2, is characterized in that,
Above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises and makes the rotating speed of above-mentioned working medium pump increase gradually, in given time, with constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump, after above-mentioned given time, again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump.
4. electricity generating device as claimed in claim 1 or 2, is characterized in that,
Above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, until the temperature being detected by said temperature sensor becomes the second high value of the first value that is compared to above-mentioned set value, with the first rotating speed, drive the rotating speed of above-mentioned working medium pump, when the temperature being detected by said temperature sensor becomes above-mentioned the second value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump.
5. electricity generating device as claimed in claim 4, is characterized in that,
Also possess: bypass flow path, connects stream between above-mentioned decompressor and above-mentioned vaporizer and the stream between above-mentioned decompressor and above-mentioned oil separator; And bypass valve, be arranged in this bypass flow path,
Above-mentioned control mechanism carries out following control: in above-mentioned startup is controlled, during above-mentioned working medium pump drives with above-mentioned the first rotating speed, open above-mentioned bypass valve, during above-mentioned working medium pump drives with above-mentioned the second rotating speed, close above-mentioned bypass valve.
6. a controlling method for electricity generating device,
Above-mentioned electricity generating device possesses:
Circulation stream, be connected in series make working medium evaporation vaporizer, make decompressor that above-mentioned working medium expands, by the oil separator of the lubricating oil separation of discharging together with above-mentioned working medium from above-mentioned decompressor, make the coagulator that above-mentioned working medium condenses and the working medium pump that the working medium being condensed by above-mentioned coagulator is carried to above-mentioned vaporizer;
Generator, expands in above-mentioned decompressor by above-mentioned working medium and driven;
Lubricating pump, carries the lubricant oil in above-mentioned oil separator to above-mentioned decompressor; And
Temperature transducer, detects the temperature of the lubricant oil in above-mentioned oil separator,
The controlling method of this electricity generating device comprises:
Lubricating pump actuation step, drives above-mentioned lubricating pump; And
Working medium pump actuation step drives above-mentioned working medium pump when the temperature being detected by said temperature sensor becomes set value.
7. the controlling method of electricity generating device as claimed in claim 6, is characterized in that,
In above-mentioned working medium pump actuation step, while becoming the first value as above-mentioned set value from the temperature being detected by said temperature sensor, along with the temperature being detected by said temperature sensor rises and makes the rotating speed of above-mentioned working medium pump increase gradually until become constant speed rotating speed, in given time, with constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump, after above-mentioned given time, again make the rotating speed of above-mentioned working medium pump increase gradually from above-mentioned constant speed rotating speed with together with the rising of the temperature being detected by said temperature sensor, while becoming than high the second value of above-mentioned the first value from the temperature being detected by said temperature sensor, with second rotating speed larger than above-mentioned constant speed rotating speed, drive the rotating speed of above-mentioned working medium pump.
8. the controlling method of electricity generating device as claimed in claim 6, is characterized in that,
In above-mentioned working medium pump actuation step, until the temperature being detected by said temperature sensor becomes the second high value of the first value that is compared to above-mentioned set value, all with the first rotating speed, drive the rotating speed of above-mentioned working medium pump, when the temperature being detected by said temperature sensor becomes above-mentioned the second value, with second rotating speed larger than above-mentioned the first rotating speed, drive the rotating speed of above-mentioned working medium pump.
9. the controlling method of electricity generating device as claimed in claim 8, is characterized in that,
Above-mentioned electricity generating device also possesses: bypass flow path, connects stream between above-mentioned decompressor and above-mentioned vaporizer and the stream between above-mentioned decompressor and above-mentioned oil separator; And bypass valve, be arranged in this bypass flow path,
In above-mentioned working medium pump actuation step, during driving with above-mentioned the first rotating speed, above-mentioned working medium pump opens above-mentioned bypass valve, during driving with above-mentioned the second rotating speed, above-mentioned working medium pump closes above-mentioned bypass valve.
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| JP2012188287 | 2012-08-29 | ||
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| CN104454055A (en) * | 2014-10-22 | 2015-03-25 | 烟台荏原空调设备有限公司 | Dual-working-medium circulation power generation system with cooling function |
| CN105089728A (en) * | 2014-05-22 | 2015-11-25 | 株式会社神户制钢所 | Heat energy recovery device |
| CN105089716A (en) * | 2014-05-09 | 2015-11-25 | 株式会社神户制钢所 | Thermal energy recovery device and start-up method of thermal energy recovery device |
| CN105673108A (en) * | 2016-04-01 | 2016-06-15 | 上海开山能源装备有限公司 | Oil injection ORC expander system |
| CN107882602A (en) * | 2016-09-30 | 2018-04-06 | 株式会社神户制钢所 | Heat reclaiming system |
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Also Published As
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| CN103670523B (en) | 2016-04-13 |
| JP2014062542A (en) | 2014-04-10 |
| KR101482877B1 (en) | 2015-01-14 |
| KR20140029262A (en) | 2014-03-10 |
| JP6013987B2 (en) | 2016-10-25 |
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