CN103867241A - Power generation device - Google Patents
Power generation device Download PDFInfo
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- CN103867241A CN103867241A CN201310695453.6A CN201310695453A CN103867241A CN 103867241 A CN103867241 A CN 103867241A CN 201310695453 A CN201310695453 A CN 201310695453A CN 103867241 A CN103867241 A CN 103867241A
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Abstract
The invention provides a power generation device. The power generation device comprises an evaporator (11) which evaporates an action medium, an expansion machine (12) which is rotationally driven by the expansion energy of the action medium, a condenser (13) which condenses the action medium, a circulating pump (14) which conveys the action medium to the evaporator (11), a generator (16), suction side detection mechanisms (21 and 22) which can detect used values in the calculation of the state quantity of the action medium flowing into the expansion machine (12), a control part (31) which controls the rotation speed of the expansion machine (12) according to electric power requirements of a device (40) supplied with electric power generated by the generator (16) within the upper limit value, an upper limit value correction part (35), which corrects the upper limit value and keeps the upper limit value to rise within the maximum value along decrease of the values detected by the suction side detection mechanisms (21 and 22). Through the structure, the electric energy production of the generator can be changed to meet the electric power requirements of a device connected with the generator.
Description
Technical field
The present invention relates to utilize blue electricity generating device of agreeing circulation.
Background technique
In the past, known have an electricity generating device that the heat extraction of the various device from factory etc. is reclaimed, utilized the energy of the heat extraction of this recovery to generate electricity.In No. 60-144594, Japanese kokai publication sho, disclose the binary electricity generating device in such electricity generating device, made the blue electricity generating device of agreeing circulation of utilization of lower boiling action medium circulation for the driving of decompressor.This electricity generating device possess make to move medium evaporation vaporizer, comprise be subject to the rotor being rotarilyd actuate by the expansion energy of the action medium of above-mentioned evaporator evaporation decompressor, make the condenser of the action medium condensation of discharging from above-mentioned decompressor, recycle pump that the action medium by above-mentioned condenser condenses is carried to above-mentioned vaporizer and expanding and driven generator in above-mentioned decompressor by above-mentioned action medium.
In the electricity generating device that utilizes orchid to agree circulate, in theory, the energy that can be taken out by decompressor is the poor of the enthalpy of action medium of outlet side of vaporizer and the enthalpy of the action medium of the inlet side of condenser, to this difference be multiplied by action medium flow after value be the generated energy being generated by generator.
; in the generator of the such electricity generating device of above-mentioned look-ahead technique; if the temperature of the thermal source of vaporizer or condenser is (following; be called " peripheral temperature ") change; the enthalpy of the action medium flowing into decompressor diminishes with the difference of the enthalpy of the action medium flowing out from decompressor, and generated energy declines.In addition, if peripheral temperature variation, in the case of being connected to the requiring electric power variation of equipment on generator, can not make the generated energy of above-mentioned generator follow this variation.
Summary of the invention
The object of this invention is to provide a kind of electricity generating device of variation of generated energy of the variation that can suppress to result from peripheral temperature.
In order to solve above-mentioned problem, can consider to make along with the increase that requires electric power of the said equipment the rotating speed of above-mentioned decompressor increase and make the rotating speed of above-mentioned decompressor reduce along with the minimizing that requires electric power of the said equipment.Here, in decompressor, the general maximum value (can avoid the maximum value of the rotating speed of the generation that shortens and resonate in the life-span of bearing) that has the rotating speed of allowing, but for raising stability compared with the situation that makes decompressor drive consistently with this maximum value, preferably setting the rotating speed less than above-mentioned maximum value is CLV ceiling limit value, in the scope below this CLV ceiling limit value, makes rotation speed change.
In addition, in the case of the temperature variation of the periphery of this electricity generating device, the temperature of the heat medium of above-mentioned vaporizer (pressure of the action medium of the suction side of above-mentioned decompressor) reduces or the temperature (pressure of the action medium of the discharge side of above-mentioned decompressor) of the cooling medium of above-mentioned condenser rises, also changed by the generated energy of above-mentioned generator according to the variation in season etc. thereupon.Particularly, if the temperature of the heat medium of above-mentioned vaporizer (pressure of the action medium of the suction side of above-mentioned decompressor) reduces, the enthalpy of the action medium of the outlet side of above-mentioned vaporizer (suction side of above-mentioned decompressor) reduces, so the difference of the enthalpy of the enthalpy of action medium of the outlet side of above-mentioned vaporizer and the action medium of the inlet side of above-mentioned condenser diminishes, the generated energy being generated by above-mentioned generator reduces, equally, if the temperature of the cooling medium of above-mentioned condenser (pressure of the action medium of the discharge side of above-mentioned decompressor) rises, the enthalpy of the action medium of the inlet side of above-mentioned condenser (the discharge side of above-mentioned decompressor) increases, so the difference of the enthalpy of the enthalpy of action medium of the outlet side of above-mentioned vaporizer and the action medium of the inlet side of above-mentioned condenser diminishes, the generated energy being generated by above-mentioned generator reduces.
Thereby, wish the electricity generating device that can except the variation of above-mentioned requirements electric power, also make neatly generated energy change according to the variation of the peripheral temperature of electricity generating device.
So, the invention provides a kind of electricity generating device, possess: vaporizer, the medium that makes to move evaporation; Decompressor, comprises the rotor rotariling actuate by the expansion energy of the action medium by above-mentioned evaporator evaporation; Condenser, makes the action medium condensation of discharging from above-mentioned decompressor; Recycle pump, carries the action medium by after above-mentioned condenser condenses to above-mentioned vaporizer; Generator, expands in above-mentioned decompressor by above-mentioned action medium and is driven; Suction side feeler mechanism, can detect the value using in the calculating of the quantity of state of the action medium flowing into above-mentioned decompressor; Control device, in scope below CLV ceiling limit value and according to the rotating speed that requires the above-mentioned decompressor of electric power control of the equipment requirement from being supplied to the electric power being generated by above-mentioned generator, described CLV ceiling limit value is the rotating speed lower than the maximum value of the rotating speed of above-mentioned rotor, is predefined rotating speed; CLV ceiling limit value correction portion, along with the value being detected by above-mentioned suction side feeler mechanism reduces, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value rises in less than above-mentioned peaked scope.
According to the present invention, if bring the peripheral temperature of impact to decline on the enthalpy of action medium, the enthalpy of the action medium thereupon flowing into above-mentioned decompressor declines, generated energy also declines, but because above-mentioned CLV ceiling limit value correction portion is along with the value being detected by above-mentioned suction side feeler mechanism reduces to make above-mentioned CLV ceiling limit value to rise in less than above-mentioned peaked scope, so above-mentioned control device can increase the expanded range of the rotating speed of above-mentioned decompressor, thus can be by the compensation in shortage of the generated energy causing because of the decline of peripheral temperature, can suppress to result from the variation of the generated energy of the variation of peripheral temperature.Therefore, can stably supply with electric power to the said equipment.Here, because above-mentioned CLV ceiling limit value is less than above-mentioned peaked rotating speed, so can guarantee the stable drive condition of above-mentioned decompressor.Because above-mentioned control device makes the rotation speed change of above-mentioned decompressor according to the electric power that requires of the said equipment, so can generate the electric power of the variation that follows above-mentioned requirements electric power in above-mentioned generator.As a result, can realize generation and the inhibition of variation of generated energy of variation of peripheral temperature of resulting from of the electric power of the variation that requires electric power that follows the said equipment simultaneously.
In addition, in the present invention, can be also to possess the discharge side feeler mechanism that can detect the value using the calculating of the quantity of state of the action medium of discharging from above-mentioned decompressor; Above-mentioned CLV ceiling limit value correction portion is along with the value being detected by this discharge side feeler mechanism rises, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value rises in less than above-mentioned peaked scope.In the case, also play the effect same with above-mentioned effect.
Or, in the present invention, can be also, possess above-mentioned suction side feeler mechanism and above-mentioned discharge side feeler mechanism the two; The value of CLV ceiling limit value correction portion based on being detected by above-mentioned suction side feeler mechanism and the poor of the value being detected by above-mentioned discharge side feeler mechanism or the value that detected by above-mentioned suction side feeler mechanism are with respect to the variation of the ratio of the value being detected by above-mentioned discharge side feeler mechanism, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value changes in less than above-mentioned peaked scope.In the case, also play the effect same with above-mentioned effect.
Above-mentioned suction side feeler mechanism can be by being located between above-mentioned vaporizer and above-mentioned decompressor and detecting the suction side pressure sensor of pressure of the action medium flowing into above-mentioned decompressor and the heat medium that is located at above-mentioned vaporizer is supplied with in stream and at least one party that detects the vaporizer side temperature transducer of the temperature of the heat medium of supplying with to above-mentioned vaporizer forms.
Above-mentioned discharge side feeler mechanism can be by being located between above-mentioned decompressor and above-mentioned condenser and detecting the discharge side pressure sensor of pressure of the action medium of discharging from above-mentioned decompressor and the cooling medium that is located at above-mentioned condenser is supplied with stream and at least one party that detects the condenser side temperature transducer of the temperature of the cooling medium of supplying with to above-mentioned condenser forms.
In addition, in the present invention, preferably, also possesses the coil temperature feeler mechanism of the coil temperature that detects above-mentioned generator; Above-mentioned control device when the value being detected by above-mentioned coil temperature feeler mechanism be that the CLV ceiling limit value of predefined coil temperature reduces the rotating speed of above-mentioned decompressor when above.If like this, in the damage of coil of avoiding above-mentioned generator, can realize generation and the inhibition of variation of generated energy of variation of peripheral temperature of resulting from of the electric power of the variation that requires electric power that follows the said equipment simultaneously.
In addition, in the present invention, preferably, also possesses the current value feeler mechanism of the value that detects the electric current being generated by above-mentioned generator; Above-mentioned control device when the value being detected by above-mentioned current value feeler mechanism be that the CLV ceiling limit value of predefined current value reduces the rotating speed of above-mentioned decompressor when above.If like this, in the damage of avoiding above-mentioned generator, can realize generation and the inhibition of variation of generated energy of variation of peripheral temperature of resulting from of the electric power of the variation that requires electric power that follows the said equipment simultaneously.
In addition, in the present invention, preferably, also possesses the oil outlet temperature feeler mechanism of detecting the oil outlet temperature of discharging from the bearing of above-mentioned decompressor; Above-mentioned control device when the value being detected by above-mentioned oil outlet temperature feeler mechanism be that the CLV ceiling limit value of predefined oil outlet temperature reduces the rotating speed of above-mentioned decompressor when above.If like this, in the damage of avoiding above-mentioned decompressor, can realize generation and the inhibition of variation of generated energy of variation of peripheral temperature of resulting from of the electric power of the variation that requires electric power that follows the said equipment simultaneously.
In addition, in the present invention, preferably, above-mentioned control device makes the rotating speed increase and decrease of above-mentioned recycle pump according to the increase and decrease of the rotating speed of above-mentioned decompressor.If like this, be matched with the increase and decrease of the rotating speed of above-mentioned decompressor, the action medium circulation of the amount matching with this rotating speed, so the rotary actuation of the rotor of above-mentioned decompressor becomes smooth-going.
As above, according to the present invention, can suppress to result from the variation of the generated energy of the variation of peripheral temperature.
Brief description of the drawings
Fig. 1 is the figure that represents the summary of the structure of the electricity generating device of the first mode of execution of the present invention.
Fig. 2 is the Mollier line chart of the change of state of the action medium of the electricity generating device of presentation graphs 1.
Fig. 3 is the flow chart for the Control the content of the electricity generating device shown in explanatory drawing 1.
Fig. 4 is the flow chart of the Control the content of explanation CLV ceiling limit value correction portion.
Fig. 5 (a) represents to move the figure of the suction pressure of medium and the relation of CLV ceiling limit value.Fig. 5 (b) is presentation graphs 5(a) the figure of variation.Fig. 5 (c) is presentation graphs 5(a) the figure of variation.
Fig. 6 is the figure that represents the summary of the structure of the electricity generating device of the second mode of execution of the present invention.
Fig. 7 is the Mollier line chart of the change of state of the action medium of the electricity generating device of presentation graphs 6.The figure that represents the summary of the structure of the electricity generating device of the 3rd mode of execution of the present invention.
Fig. 8 (a) represents to move the figure of the head pressure of medium and the relation of CLV ceiling limit value.Fig. 8 (b) is presentation graphs 8(a) the figure of variation.Fig. 8 (c) is presentation graphs 8(a) the figure of variation.
Fig. 9 is the figure that represents the summary of the structure of the electricity generating device of the 3rd mode of execution of the present invention.
Figure 10 (a) represents to move the figure of relation of the suction pressure of medium and the difference of head pressure and CLV ceiling limit value.Figure 10 (b) is presentation graphs 10(a) the figure of variation.Figure 10 (c) is presentation graphs 10(a) the figure of variation.
Embodiment
(the first mode of execution)
On one side the electricity generating device of the first mode of execution of the present invention is described with reference to Fig. 1～Fig. 5 on one side.
As shown in Figure 1, this electricity generating device possesses the vaporizer 11 that action dielectric heating is made to its evaporation, be subject to the decompressor 12 of the action media drive of discharging from vaporizer 11, by cooling the action medium of discharging from decompressor 12 and make the condenser 13 of its condensation, the recycle pump 14 that the action medium of discharging from condenser 13 is sent to vaporizer 11, by these each equipment 11～14 being interconnected to the circulation stream 15 of the loop circuit that forms action medium circulation, obtain power and the generator 16 that generates electricity from decompressor 12, can detect the suction side feeler mechanism 21 of the value using in the calculating of the quantity of state (enthalpy) of the action medium flowing into decompressor 12, 22, with the control mechanism 30 of rotating speed etc. of controlling decompressor 12.In addition, in this electricity generating device, use the boiling point action media lower than water such as HFC245fa.
Vaporizer 11 makes liquid action medium evaporation and becomes saturated vapour or superheated vapor.The mobile heat medium stream 11b of heat medium that vaporizer 11 has the action medium stream 11a of liquid action media flow and supplies with from outside thermal source.Action medium mobile in action medium stream 11a is by evaporating with heat medium heat exchange mobile in heat medium stream 11b.As the heat medium of supplying with to heat medium stream 11b, can enumerate for example steam or warm water.This heat medium stream 11b is connected with the supply stream 17 that is used for supplying with from outside thermal source to vaporizer 11 heat medium.
Suction side feeler mechanism is the sensor that can detect the value using in the calculating of the quantity of state (enthalpy) of the action medium flowing into decompressor 12.The electricity generating device of present embodiment possess between the vaporizer 11 that is located in circulation stream 15 and decompressor 12 and detect the action medium flowing into decompressor 12 pressure suction side pressure sensor 21 and be located at the vaporizer side temperature transducer 22 of supplying with in stream 17 and detecting the temperature of the heat medium of supplying with to vaporizer 11, at least one party of these two sensors forms suction side feeler mechanism.; the temperature of the suction pressure (pressure of the suction side of decompressor 12) based on being detected by suction side pressure sensor 21 or the heat medium being detected by vaporizer side temperature transducer 22; calculate the enthalpy (following, to be called " suction side enthalpy ") of the action medium of the suction side of decompressor 12.As described later, along with this suction side enthalpy reduces, declined by the generated energy of generator 16.In addition, also can replace above-mentioned suction side pressure sensor 21 and use the suction side temperature transducer of the temperature that detects the action medium that flows into decompressor 12.
Electricity generating device also possesses the coil temperature feeler mechanism 36 of the coil temperature that detects generator 16, the current value feeler mechanism 37 of value of detecting the electric current being generated by generator 16 and the oil outlet temperature feeler mechanism 38 of the oil outlet temperature that detection is discharged from the bearing of decompressor 12.In addition, coil temperature feeler mechanism 36 and current value feeler mechanism 37 are located at respectively in generator 16, and oil outlet temperature feeler mechanism 38 is located on decompressor 12, but in Fig. 1, for convenient, they are illustrated in near of control device 30.
Here, the rotating speed of the decompressor 12 corresponding with requiring electric power is calculated by control device 31 as follows.; difference and the above-mentioned requirements electric power of the enthalpy (discharging side enthalpy) of the action medium of the suction side enthalpy that the value that control device 31 is detected by suction side feeler mechanism 21,22 based on basis calculates and the discharge side of decompressor 12, the rotating speed of target (rotating speed from generator 16 generations with the electric power of the amount that requires electric power to match) of calculating decompressor 12.
If the value being detected by suction side feeler mechanism 21,22 reduces, above-mentioned suction side enthalpy reduces, generated energy by generator 16 reduces, thus CLV ceiling limit value correction portion 35 revise so that CLV ceiling limit value is along with the value being detected by suction side feeler mechanism 21,22 reduces and rises.Thus, the expanded range that control device 31 can make the rotating speed of decompressor 12 increase, so the rotating speed of decompressor 12 is increased by this control device 31, can suppress to result from the decline of the generated energy reducing of above-mentioned suction side enthalpy.
Here with reference to Fig. 2 (representing the Mollier line chart of the change of state of action medium), the reason that results from reducing of suction side enthalpy and reduced by the generated energy of generator 16 is described.
Action medium that point A in Fig. 2 represents to flow into decompressor 12, the i.e. state of the action medium before being expanded by decompressor 12, action medium after some B represents to be expanded by decompressor 12, the i.e. state of the action medium of discharging from decompressor 12.And some C represents the state of the action medium of discharging from condenser 13, some D represents the state of the action medium flowing into vaporizer 11.Now, the energy that can be taken out by decompressor 12 is in theory the poor Δ h of specific enthalpy with the specific enthalpy of some B of an A, and the value obtaining according to the flow that this difference Δ h is multiplied by action medium decides the generated energy being generated by generator 16.Control device 31 is controlled the rotating speed of decompressor 12, so that the flow of the action medium in decompressor 12 becomes the flow of the action medium by requiring electric power and poor Δ h calculating.
In addition,, in Fig. 2, represent when the evaporating temperature in vaporizer 11 drops to 70 DEG C from 80 DEG C, the change of state of the action medium in above-mentioned suction side enthalpy when decline.In addition, the evaporating temperature in vaporizer 11 is 70 DEG C, and the point corresponding with an A, some B and some D is expressed as to an A', some B' and some D'.The energy that can be taken out by decompressor 12 under this state is the poor Δ h' of specific enthalpy with the specific enthalpy of some B' of an A', and this poor Δ h' is less than above-mentioned poor Δ h.Therefore the generated energy, being generated by generator 16 in the time that the evaporating temperature in vaporizer 11 is 70 DEG C is compared when evaporating temperature in vaporizer 11 is 80 DEG C and is reduced.
Then, on one side the Control the content of control device 31 is described with reference to Fig. 3 on one side.
As a result, in the situation that generated energy is excessive, at generated energy than require electric power large in the situation that, control device 31 calculates the rotating speed of target (step ST12) of decompressor 12, this rotating speed is reduced until the rotating speed of decompressor 12 becomes this rotating speed of target (step ST13).Thus, be reduced to and require electric power by the generated energy of generator 16.In addition, now, control device 31 also reduces the rotating speed of recycle pump 14, so that the amount of the action medium flowing into decompressor 12 reduces.On the other hand, the result of the comparison in step ST11 be generated energy suitable, that is, at generated energy, with require electric power consistent in the situation that, control device 31 does not change the rotating speed of current decompressor 12.Then, the result of the comparison in step ST11 be generated energy very few, at generated energy than require electric power little in the situation that, control device 31 judges whether the value that detected by the above-mentioned coil temperature feeler mechanism CLV ceiling limit value (step ST14) less than predefined coil temperature.
Then, if the value being detected by above-mentioned coil temperature feeler mechanism is more than the CLV ceiling limit value of coil temperature, the rotating speed of decompressor 12 is reduced, coil temperature is reduced to (step ST15).On the other hand, if the value being detected by above-mentioned coil temperature feeler mechanism less than the CLV ceiling limit value of coil temperature, control device 31 judges that the value that detected by above-mentioned current value feeler mechanism is whether less than the CLV ceiling limit value (step ST16) of predefined current value.
If the value being detected by above-mentioned current value feeler mechanism is more than the CLV ceiling limit value of current value, reduce by the rotating speed that makes as required decompressor 12, current value is reduced to (step ST17).If the value being detected by above-mentioned current value feeler mechanism is less than the CLV ceiling limit value of current value, control device 31 judges that the value that detected by above-mentioned oil outlet temperature value feeler mechanism is whether less than the CLV ceiling limit value (step ST18) of predefined oil outlet temperature.
If the value being detected by above-mentioned oil outlet temperature feeler mechanism is more than the CLV ceiling limit value of oil outlet temperature, reduce by the rotating speed that makes as required decompressor 12, the oil outlet temperature of bearing is reduced to (step ST19).If the value being detected by above-mentioned oil outlet temperature feeler mechanism is less than the CLV ceiling limit value of oil outlet temperature, control device 31 calculates the rotating speed of target (step ST20) of decompressor 12.
In addition, step ST14, step ST16 and step ST18 can with which kind of order execution.In addition, also can be by wantonly 1 or two or all omissions of these steps ST14, step ST16 and step ST18.In the case, step ST15, step ST17 and step ST19 are also correspondingly omitted.
Then, control device 31, by rotating speed and rotating speed of target comparison (step ST21), judges that whether this rotating speed of target is less than CLV ceiling limit value (step ST22).
If rotating speed of target less than CLV ceiling limit value, is this rotating speed of target (step ST23) by speed setting.On the other hand, if this rotating speed of target is more than CLV ceiling limit value, be CLV ceiling limit value (step ST24) by speed setting.Thus, increased by the generated energy of generator 16 until become requirement electric power or close to requiring electric power.In addition, now, control device 31 also increases the rotating speed of recycle pump 14, so that the amount of the action medium flowing into decompressor 12 increases.
The Control the content of CLV ceiling limit value correction portion 35 then, is described with reference to Fig. 4 on one side on one side.
The testing result (step ST31) of the suction pressure of CLV ceiling limit value correction portion 35 based on by suction side pressure sensor 21, judges whether to change CLV ceiling limit value (step ST32).Then,, if be judged as change CLV ceiling limit value, judge that whether CLV ceiling limit value is less than maximum value (step ST33).If CLV ceiling limit value less than maximum value, changes CLV ceiling limit value (step ST34).Certainly,, if CLV ceiling limit value is maximum value, CLV ceiling limit value is maintained to maximum value.In electricity generating device, by changing CLV ceiling limit value, that rotating speed certain, decompressor 12 is the value that detected by suction side pressure sensor 21 under the state of CLV ceiling limit value reduces in the case of requiring electric power, in order to meet above-mentioned requirements electric power, can make the flow (rotating speed of decompressor 12) of the action medium flowing into decompressor 12 increase.In addition, the change operation of the CLV ceiling limit value of being undertaken by CLV ceiling limit value correction portion 35 both can be carried out with certain interval, also can carry out continuously.
The relation of suction pressure and CLV ceiling limit value then, is described based on Fig. 5.As shown in Fig. 5 (a)～Fig. 5 (c), CLV ceiling limit value increases to maximum value gradually along with reducing of suction pressure.
In addition, in Fig. 4 and Fig. 5, represent that CLV ceiling limit value correction portion 35 changes the example of CLV ceiling limit value based on the value being detected by suction side pressure sensor 21, but this CLV ceiling limit value correction portion 35 also can change CLV ceiling limit value based on the value being detected by vaporizer side temperature transducer 22.In the case, same with the relation shown in Fig. 5 (a)～Fig. 5 (c), CLV ceiling limit value increases to maximum value gradually along with the reduction of the temperature of the heat medium of supplying with to vaporizer 11.
As described above, in binary electricity generating device in the past, if the enthalpy of the action medium that the peripheral temperature such as the temperature of the temperature of heat medium or cooling medium decline, flow into decompressor 12 diminishes with the difference of the enthalpy of the action medium flowing out to decompressor 12, generated energy declines.With respect to this, in the electricity generating device of present embodiment, by CLV ceiling limit value correction portion 35 is set, along with the value being detected by suction side feeler mechanism 21,22 reduces and makes CLV ceiling limit value increase in less than peaked scope, so the expanded range that control device 31 can make the rotating speed of decompressor 12 increase, can compensate in shortage, the variation that can suppress to result from the generated energy of the variation of peripheral temperature of the generated energy that brings because of the decline of peripheral temperature thus.Therefore, can stably supply with electric power to equipment 40.Here, because CLV ceiling limit value is less than peaked rotating speed, so can guarantee the stable drive condition of decompressor 12.In addition, in the electricity generating device of present embodiment, owing to making the rotation speed change of decompressor 12 by control device 31 according to the electric power that requires of equipment 40, so can generate the electric power that follows the variation that requires electric power in generator 16, as a result, can realize generation and the inhibition of variation of generated energy of variation of peripheral temperature of resulting from of the electric power of the variation that requires electric power of the equipment of following 40 simultaneously.
In addition, the electricity generating device of present embodiment possesses coil temperature feeler mechanism, even the situation that control device 31 requires electric power to increase, in the time that the value being detected by above-mentioned coil temperature feeler mechanism is not the CLV ceiling limit value less than predefined coil temperature, do not make the rotating speed of decompressor 12 increase yet, so in the damage of coil of avoiding generator 16, can realize the variation that requires electric power of the equipment of following 40 electric power generation and result from peripheral temperature variation generated energy variation inhibition the two.
And then, the electricity generating device of present embodiment also possesses current value feeler mechanism, even the situation that control device 31 requires electric power to increase, in the time that not being the CLV ceiling limit value less than predefined current value, the value being detected by above-mentioned current value feeler mechanism do not make the rotating speed of decompressor 12 increase yet, so in avoiding the damage of generator 16, can realize the variation that requires electric power of the equipment of following 40 electric power generation and result from peripheral temperature variation generated energy variation inhibition the two.
In addition, the electricity generating device of present embodiment possesses oil outlet temperature feeler mechanism, even the situation that control device 31 requires electric power to increase, in the time that not being the CLV ceiling limit value less than predefined oil outlet temperature, the value being detected by above-mentioned oil outlet temperature feeler mechanism do not make the rotating speed of decompressor 12 increase yet, so in avoiding the damage of decompressor 12, can realize the variation that requires electric power of the equipment of following 40 electric power generation and result from peripheral temperature variation generated energy variation inhibition the two.
In addition, the control device 31 of present embodiment is owing to making the rotating speed increase and decrease of recycle pump 14 according to the increase and decrease of the rotating speed of decompressor 12, so be matched with the increase and decrease of the rotating speed of decompressor 12, the action medium of the amount matching with this rotating speed is in the interior circulation of circulation stream 15.Thus, the rotary actuation of the rotor of decompressor 12 becomes smooth-going.
(the second mode of execution)
On one side the second mode of execution of the present invention is described with reference to Fig. 6～Fig. 8 on one side.In addition, in this second mode of execution, only the part different from the first mode of execution described, the explanation of structure, effect and the effect identical with the first mode of execution is omitted.
The electricity generating device of present embodiment replaces the suction side pressure sensor 21 of the first mode of execution and vaporizer side temperature transducer 22 and possesses the side pressure sensor 23 of discharge and condenser side temperature transducer 24.
Discharge side pressure sensor 23 and be located between the decompressor 12 and condenser 13 in circulation stream 15, detect the pressure of the action medium of discharging from decompressor 12.Condenser side temperature transducer 24 is located to be supplied with in stream 18, detects the temperature of the cooling medium of supplying with to condenser 13.The temperature of the head pressure (pressure of the discharge side of decompressor 12) based on being detected by discharge side pressure sensor 23 or the cooling medium being detected by condenser side temperature transducer 24, the discharge side enthalpy of the action medium of the discharge side of calculating decompressor 12., these at least one party that discharge side pressure sensor 23 and condenser side temperature transducer 24 form discharge side feeler mechanism.In addition, also can replace above-mentioned discharge side pressure sensor 23 and use the discharge side temperature transducer of the temperature that detects the action medium of discharging from decompressor 12.
In the present embodiment, the value that CLV ceiling limit value correction portion 35 bases are detected by discharge side feeler mechanism 23,24 is by CLV ceiling limit value correction.For example, this CLV ceiling limit value correction portion 35 is along with by discharging that the value that detects of side feeler mechanism 23,24 rises and by CLV ceiling limit value correction, so that it rises in less than above-mentioned peaked scope.
Here, result from above-mentioned discharge side enthalpy increase and reduced by the generated energy of generator 16, on one side with reference to Fig. 7 (representing the Mollier line chart of the change of state of action medium), its reason is described on one side.
Action medium that point A in Fig. 7 represents to flow into decompressor 12, i.e. action medium before being expanded by decompressor 12, action medium after some B represents to be expanded by decompressor 12, i.e. the action medium of discharging from decompressor 12.And some C represents the action medium of discharging from condenser 13, some D represents the action medium flowing into vaporizer 11.Therefore, in theory, the energy that can be taken out by decompressor 12 is the specific enthalpy of an A and the poor Δ h of specific enthalpy of some B, this difference Δ h is multiplied by to move the value that the flow of medium obtains be the generated energy being generated by generator 16.
In addition,, in Fig. 7, represent when condensing temperature in condenser 13 rises to 40 DEG C from 30 DEG C, the change of state of the action medium of above-mentioned discharge side enthalpy while rising.In addition, the condensing temperature in condenser 13 is 40 DEG C, and the point corresponding with a B, some C and some D is expressed as to a B', some C' and some D'.Under this state, the energy that can be taken out by decompressor 12 is the poor Δ h' of specific enthalpy with the specific enthalpy of some B' of an A', and this poor Δ h' is less than above-mentioned poor Δ h.Therefore the generated energy, being generated by generator 16 in the time that the condensing temperature in condenser 13 is 40 DEG C is compared when condensing temperature in condenser 13 is 30 DEG C and is reduced.
In addition, the Control the content of control device 31 is same with the first mode of execution.In addition, the Control the content of CLV ceiling limit value correction portion 35, except the value of this CLV ceiling limit value correction portion 35 based on being detected by discharge side feeler mechanism 23,24 is by CLV ceiling limit value correction this point, is same with the first mode of execution, so the description thereof will be omitted.
The relation of head pressure and CLV ceiling limit value then, is described based on Fig. 8.As shown in Fig. 8 (a)～Fig. 8 (c), CLV ceiling limit value increases to maximum value gradually along with the rising of head pressure.
In addition, in this second mode of execution, represent the example that the value of CLV ceiling limit value correction portion 35 based on being detected by discharge side pressure sensor 23 changes CLV ceiling limit value, but CLV ceiling limit value correction portion 35 also can the value based on being detected by condenser side temperature transducer 24 change CLV ceiling limit value.In the case, same with the relation shown in Fig. 8 (a)～Fig. 8 (c), CLV ceiling limit value increases to maximum value gradually along with the rising of the temperature of the cooling medium of supplying with to condenser 13.
Like this, in the electricity generating device of present embodiment, CLV ceiling limit value correction portion 35 is along with the value being detected by discharge side feeler mechanism 23,24 rises and makes CLV ceiling limit value increase in less than peaked scope, so can obtain the effect same with the first mode of execution.
(the 3rd mode of execution)
On one side the second mode of execution of the present invention is described with reference to Fig. 9 and Figure 10 on one side.In addition, about the 3rd mode of execution, also only the part different from the first mode of execution described, the explanation of the structure, function and effect identical with the first mode of execution is omitted.
The electricity generating device of present embodiment, except the suction side pressure sensor 21 and vaporizer side temperature transducer 22 of the first mode of execution, also possesses the side pressure sensor 23 of discharge and condenser side temperature transducer 24.In addition, these to discharge side pressure sensor 23 and condenser side temperature transducer 24 be same with what illustrate in the second mode of execution.
In the present embodiment, the value of CLV ceiling limit value correction portion 35 based on being detected by suction side feeler mechanism 21,22 and by discharge value that side feeler mechanism 23,24 detects both by CLV ceiling limit value correction.Particularly, this CLV ceiling limit value correction portion 35 is along with deducting from the value being detected by suction side feeler mechanism 21,22 by discharging poor (or poor absolute value) that the value that detects of side feeler mechanism 23,24 obtains or the value being detected by suction side feeler mechanism 21,22 with respect to being reduced by the ratio of discharging the value that side feeler mechanism 23,24 detects, by CLV ceiling limit value correction, to rise in less than above-mentioned peaked scope.
In addition, result from the reducing or the increase of above-mentioned discharge side enthalpy and being reduced by the generated energy of generator 16 of above-mentioned suction side enthalpy, its reason be illustrate in the respective embodiments described above such.
In addition, the Control the content of control device 31 is same with the first mode of execution.And the Control the content of CLV ceiling limit value correction portion 35 is except this CLV ceiling limit value correction portion 35 is based on deduct poor (or the poor absolute value obtaining by discharging the value that detects of side feeler mechanism 23,24 from the value being detected by suction side feeler mechanism 21,22.Same below) or the value that detected by suction side feeler mechanism 21,22 with respect to by discharging the ratio of the value that side feeler mechanism 23,24 detects, by beyond CLV ceiling limit value correction this point, be same with the first mode of execution, so the description thereof will be omitted.
Here as an example, based on Figure 10, the difference of suction pressure and head pressure and the relation of CLV ceiling limit value are described.As shown in Figure 10 (a)～Figure 10 (c), CLV ceiling limit value increases to maximum value gradually along with the reducing of difference of suction pressure and head pressure.
In addition, in Figure 10, represent the example that the value of CLV ceiling limit value correction portion 35 based on being detected by suction side pressure sensor 21 and the difference of the value being detected by discharge side pressure sensor 23 change CLV ceiling limit value, but this CLV ceiling limit value correction portion 35 also can the value based on being detected by suction side pressure sensor 21 change CLV ceiling limit value with respect to the ratio of the value being detected by discharge side pressure sensor 23, also can the value based on being detected by vaporizer side temperature transducer 22 with the difference of the value being detected by condenser side temperature transducer 24, CLV ceiling limit value be changed, can also the value based on being detected by vaporizer side temperature transducer 22 with respect to the ratio of the value being detected by condenser side temperature transducer 24, CLV ceiling limit value be changed.In these cases, same with the relation shown in Figure 10 (a)～Figure 10 (c), CLV ceiling limit value is along with above-mentioned difference or reducing of aforementioned proportion and increase to gradually maximum value.
Like this, in the electricity generating device of present embodiment, CLV ceiling limit value correction portion 35 is along with the value being detected by suction side feeler mechanism 21,22 and the value poor or that detected by suction side feeler mechanism 21,22 of the value being detected by discharge side feeler mechanism 23,24 reduce with respect to the ratio of the value being detected by discharge side feeler mechanism 23,24, make CLV ceiling limit value increase in less than above-mentioned peaked scope, so can obtain the effect same with the first mode of execution.
In addition, current disclosed mode of execution is all to illustrate aspect whole, and should not be considered to restrictive.Scope of the present invention is not to be represented by claims by the explanation of above-mentioned mode of execution, also comprise with claims meaning of equal value and scope in whole changes.In the 3rd mode of execution, also can obtain by discharging the ratio of the value that detects of side feeler mechanism 23,24 with respect to the value being detected by suction side feeler mechanism 21,22, along with this ratio increases and makes the CLV ceiling limit value of the rotating speed of decompressor 12 increase to gradually maximum value.In addition, also can obtain from deducting by discharging the value that detects of side feeler mechanism 23,24 poor that the value that detected by suction side feeler mechanism 21,22 obtains, along with this difference increase and make CLV ceiling limit value increase to gradually maximum value.
In the above-described embodiment, in the case of arranging, generator is used the cooling cooler such as cooling collar or cooling fan of cooling liquid, also can be by making the cooling capacity of cooler increase to reduce coil temperature in step ST15.Equally, in the case of being provided with cooler cooling oil outlet temperature, also can be by making the cooling capacity of cooler increase to reduce oil outlet temperature in step ST19.Like this, in the operation reducing in the operation that coil temperature is reduced and by oil outlet temperature, also can use the method beyond the method for the rotating speed reduction of decompressor 12.In addition,, in step ST17, also can electrically carry out the operation that current value is reduced.
Claims (9)
1. an electricity generating device, is characterized in that, possesses:
Vaporizer, the medium that makes to move evaporation;
Decompressor, comprises the rotor rotariling actuate by the expansion energy of the action medium by above-mentioned evaporator evaporation;
Condenser, makes the action medium condensation of discharging from above-mentioned decompressor;
Recycle pump, carries the action medium by after above-mentioned condenser condenses to above-mentioned vaporizer;
Generator, expands in above-mentioned decompressor by above-mentioned action medium and is driven;
Suction side feeler mechanism, can detect the value using in the calculating of the quantity of state of the action medium flowing into above-mentioned decompressor;
Control device, in scope below CLV ceiling limit value and according to the rotating speed that requires the above-mentioned decompressor of electric power control of the equipment requirement from being supplied to the electric power being generated by above-mentioned generator, described CLV ceiling limit value is the rotating speed lower than the maximum value of the rotating speed of above-mentioned rotor, is predefined rotating speed;
CLV ceiling limit value correction portion, along with the value being detected by above-mentioned suction side feeler mechanism reduces, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value rises in less than above-mentioned peaked scope.
2. an electricity generating device, is characterized in that, possesses:
Vaporizer, the medium that makes to move evaporation;
Decompressor, comprises the rotor rotariling actuate by the expansion energy of the action medium by above-mentioned evaporator evaporation;
Condenser, makes the action medium condensation of discharging from above-mentioned decompressor;
Recycle pump, carries the action medium by after above-mentioned condenser condenses to above-mentioned vaporizer;
Generator, expands in above-mentioned decompressor by above-mentioned action medium and is driven;
Discharge side feeler mechanism, can detect the value using the calculating of the quantity of state of the action medium of discharging from above-mentioned decompressor;
Control device, in scope below CLV ceiling limit value and according to the rotating speed that requires the above-mentioned decompressor of electric power control of the equipment requirement from being supplied to the electric power being generated by above-mentioned generator, described CLV ceiling limit value is the rotating speed lower than the maximum value of the rotating speed of above-mentioned rotor, is predefined rotating speed;
CLV ceiling limit value correction portion, along with the value being detected by above-mentioned discharge side feeler mechanism rises, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value rises in less than above-mentioned peaked scope.
3. an electricity generating device, is characterized in that, possesses:
Vaporizer, the medium that makes to move evaporation;
Decompressor, comprises the rotor rotariling actuate by the expansion energy of the action medium by above-mentioned evaporator evaporation;
Condenser, makes the action medium condensation of discharging from above-mentioned decompressor;
Recycle pump, carries the action medium by after above-mentioned condenser condenses to above-mentioned vaporizer;
Generator, expands in above-mentioned decompressor by above-mentioned action medium and is driven;
Suction side feeler mechanism, can detect the value using in the calculating of the quantity of state of the action medium flowing into above-mentioned decompressor;
Discharge side feeler mechanism, can detect the value using the calculating of the quantity of state of the action medium of discharging from above-mentioned decompressor;
Control device, in scope below CLV ceiling limit value and according to the rotating speed that requires the above-mentioned decompressor of electric power control of the equipment requirement from being supplied to the electric power being generated by above-mentioned generator, described CLV ceiling limit value is the rotating speed lower than the maximum value of the rotating speed of above-mentioned rotor, is predefined rotating speed;
CLV ceiling limit value correction portion, value based on being detected by above-mentioned suction side feeler mechanism and the poor of the value being detected by above-mentioned discharge side feeler mechanism or the value that detected by above-mentioned suction side feeler mechanism are with respect to the variation of the ratio of the value being detected by above-mentioned discharge side feeler mechanism, by above-mentioned CLV ceiling limit value correction, so that above-mentioned CLV ceiling limit value changes in less than above-mentioned peaked scope.
4. the electricity generating device as described in claim 1 or 3, is characterized in that,
Above-mentioned suction side feeler mechanism is by being located between above-mentioned vaporizer and above-mentioned decompressor and detecting the suction side pressure sensor of pressure of the action medium flowing into above-mentioned decompressor and the heat medium that is located at above-mentioned vaporizer is supplied with in stream and at least one party that detects the vaporizer side temperature transducer of the temperature of the heat medium of supplying with to above-mentioned vaporizer forms.
5. electricity generating device as claimed in claim 2 or claim 3, is characterized in that,
Above-mentioned discharge side feeler mechanism is by being located between above-mentioned decompressor and above-mentioned condenser and detecting the discharge side pressure sensor of pressure of the action medium of discharging from above-mentioned decompressor and the cooling medium that is located at above-mentioned condenser is supplied with stream and at least one party that detects the condenser side temperature transducer of the temperature of the cooling medium of supplying with to above-mentioned condenser forms.
6. the electricity generating device as described in any one in claim 1～3, is characterized in that,
Also possesses the coil temperature feeler mechanism of the coil temperature that detects above-mentioned generator;
Above-mentioned control device when the value being detected by above-mentioned coil temperature feeler mechanism be that the CLV ceiling limit value of predefined coil temperature reduces the rotating speed of above-mentioned decompressor when above.
7. the electricity generating device as described in any one in claim 1～3, is characterized in that,
Also possesses the current value feeler mechanism of the value that detects the electric current being generated by above-mentioned generator;
Above-mentioned control device when the value being detected by above-mentioned current value feeler mechanism be that the CLV ceiling limit value of predefined current value reduces the rotating speed of above-mentioned decompressor when above.
8. the electricity generating device as described in any one in claim 1～3, is characterized in that,
Also possesses the oil outlet temperature feeler mechanism of detecting the oil outlet temperature of discharging from the bearing of above-mentioned decompressor;
Above-mentioned control device when the value being detected by above-mentioned oil outlet temperature feeler mechanism be that the CLV ceiling limit value of predefined oil outlet temperature reduces the rotating speed of above-mentioned decompressor when above.
9. the electricity generating device as described in any one in claim 1～3, is characterized in that,
Above-mentioned control device makes the rotating speed increase and decrease of above-mentioned recycle pump according to the increase and decrease of the rotating speed of above-mentioned decompressor.
Applications Claiming Priority (2)
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| JP2012275673A JP5918117B2 (en) | 2012-12-18 | 2012-12-18 | Power generator |
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| JP6394862B2 (en) * | 2014-07-02 | 2018-09-26 | 株式会社Ｉｈｉ回転機械エンジニアリング | Waste heat power generator |
| CN105971907A (en) * | 2016-06-27 | 2016-09-28 | 中冶华天工程技术有限公司 | Air draft device and driving method |
| JP2019019797A (en) * | 2017-07-20 | 2019-02-07 | パナソニック株式会社 | Cogeneration system and operation method of the same |
| JP7268276B2 (en) * | 2019-02-18 | 2023-05-08 | 株式会社アース・テクノ・サポート | binary power generation system |
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Also Published As
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| JP5918117B2 (en) | 2016-05-18 |
| JP2014118908A (en) | 2014-06-30 |
| CN103867241B (en) | 2016-08-24 |
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