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Power generating apparatus and operation method thereof

A technology for generating devices and power, which is applied in the field of power generating devices and can solve the problems of large rotational load, slow start, and inability to apply a motor to the expander.

Inactive Publication Date: 2014-03-26
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, since the heat engine is not in a stable operation state, not only cannot the rotational power from the expander be applied to the motor as auxiliary power, but on the contrary, the motor of the gas compressor rotates the expander, and the start-up of the entire system may become very slow.
In addition, in this situation, the operating medium flowing into the expander is a liquid, and the rotational load of the expander becomes too large, which may cause damage to the expander.
[0009] Such a bad situation is a very serious problem, and cannot be solved by the above-mentioned prior art
[0010] This is because the heat engine of the above-mentioned prior art does not generate auxiliary power for assisting the power of the drive source provided separately from the heat engine, and the original system structure is different.

Method used

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  • Power generating apparatus and operation method thereof
  • Power generating apparatus and operation method thereof
  • Power generating apparatus and operation method thereof

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach ］

[0040] Hereinafter, a first embodiment of the power generation device 100 according to the present invention will be described based on the drawings.

[0041] like figure 1 As shown, the power generation device 100 of the first embodiment has two power generation sources of the auxiliary power generation device 1 and the motor 53 that drives the rotary machine 11 . The auxiliary power generator 1 has a heat engine 4 including an expander 3 having a drive unit 2 (screw rotor 2 in this embodiment) driven by expansion and rotation of steam of a working medium T, and a power transmission shaft 6 , The power transmission shaft 6 takes out the rotational driving force generated by the expander 3 to the outside of the casing 5 that accommodates the expander 3 .

[0042] The casing 5 accommodates the driving unit 2 of the expander 3 inside surrounded by the partition wall 7 . The power transmission shaft 6 is divided into a drive shaft 8 inside the housing 5 and a driven shaft 9 out...

no. 2 Embodiment approach ］

[0097] Next, a second embodiment of the power generation device 100 of the present invention will be described based on the drawings.

[0098] like Figure 4 As shown, the configuration of the auxiliary power generator 1 according to the second embodiment differs from the first embodiment in the following points.

[0099] That is, the point that the heat source for vaporizing the working medium T is supplied from the outside is different in the binary cycle machine 4 of the second embodiment. In other words, the heat generated by the rotary machine 11 is not used (recovered) as a heat source for vaporizing the working medium T. FIG. In this way, the auxiliary power generator 1 of the second embodiment includes the binary cycle machine 4 having a simple device structure. In addition, various rotating machines such as motors and compressors may be used as the rotating machine 11 .

[0100] However, the arrangement of the bypass pipe 63 connecting the inlet and outlet of the e...

no. 3 Embodiment approach ］

[0112] Figure 5 The configuration of the power generation device of the third embodiment is shown. Specifically, this power generator includes a circulation circuit 110 as a binary cycle machine in which a working medium circulates, a generator 120 as a rotating machine, a heating medium circuit 130 , and a control unit 150 for performing various controls. In addition, in the circulation circuit 110 , a working medium (for example, HFC245fa) having a lower boiling point than water circulates.

[0113] The circulation circuit 110 is connected in series with an evaporator 111 that vaporizes the working medium, a first expander 113 that expands the working medium in a gaseous state, a condenser 114 that condenses the working medium expanded by the first expander 113, and a closed circuit of a working medium pump 115 that sends the working medium condensed by the condenser 114 to the evaporator 111 .

[0114] The evaporator 111 vaporizes the liquid operating medium. The evapor...

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PUM

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Abstract

Provided is a power generating apparatus capable of using power generated by a heat engine in combination with power of a driving source provided separately from the heat engine. In order to prevent a problem caused when activating and stopping the apparatus, the apparatus of the present invention includes a rotary machine driving source which generates a rotational driving force for a rotary machine and a heat engine which drives the rotary machine in cooperation with the rotary machine driving source, wherein the heat engine includes an expander which expands an evaporated working medium so as to generate a rotational driving force, the expander is provided with a bypass pipe which causes a working medium inlet of the expander to communicate with a working medium outlet thereof, and the bypass pipe is provided with an on-off valve which opens and closes the bypass pipe.

Description

technical field [0001] The present invention relates to a power generation device capable of utilizing power generated by a heat engine in combination with power from a drive source provided separately from the heat engine, and a method for operating the device. Background technique [0002] A heat engine such as a binary cycle machine converts heat into power (converts thermal energy into kinetic energy) by expanding and condensing operating media such as ammonia, pentane, freon, and other low-boiling point media such as freon through a thermodynamic cycle such as the Rankine cycle. structure. [0003] Such a heat engine includes an evaporator that vaporizes the liquid working medium, an expander that expands the vapor of the working medium, a condenser that condenses the gas working medium used by the expander into a liquid, and converts the condensed working medium into liquid. A circulation pump that compresses and circulates it. In addition, the rotational driving for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K25/08F22B1/18
CPCF01K15/00F01K13/02F01K23/16F01K23/04F01K25/00F01K25/10F01K3/242F01K23/08
Inventor 足立成人松村昌义成川裕
Owner KOBE STEEL LTD