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Vapor expander driven air compressor

A technology for driving air and compressing devices, used in machines/engines, mechanical equipment, pump combinations for elastic fluid rotary piston type/oscillating piston type, etc., can solve the problems of compressed air pressure fluctuation, excessive compressed air, etc.

Active Publication Date: 2009-10-21
코벨코컴프레서가부시키가이샤
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, in the case where there is no proportional relationship between the amount of steam used and the amount of compressed air consumed, if the pressure on the discharge side of the screw steam expander is kept constant, the amount of compressed air generated cannot be controlled and will cause damage to the compressed air. Too much or not enough, pressure fluctuation of compressed air

Method used

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  • Vapor expander driven air compressor

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Embodiment Construction

[0020] Thus, embodiments of the present invention will be described with reference to the drawings.

[0021] figure 1 An outline of a steam expander-driven air compression device 1 according to one embodiment of the present invention is shown. The steam expander-driven air compression device 1 has a screw expander (expander) 2 as a volumetric steam expander, a screw compressor 3 as a volumetric air compressor, an output shaft of the screw expander 2 and an input of the screw compressor 3. The shafts are connected via a reducer 4 .

[0022] In the screw expander 2 , high-pressure steam is supplied from a boiler (not shown) via a steam trap 5 and a capacity regulating valve 6 . The screw expander 2 converts the expansion force of the sucked steam into a rotational force, and supplies the low-pressure steam decompressed by the expansion to necessary equipment not shown. In addition, the steam expander-driven air compression device 1 can supply high-pressure steam to the low-pr...

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PUM

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Abstract

A vapor expander driven air compressor, comprises: a bulk type vapor expander, a bulk type air compressing engine driven by the bulk type vapor expander, a capacity regulation valve capable of adjusting the inspiratory capacity of the bulk type vapor expander, a pressure detector for detecting the pressure of the discharged side of the bulk type air compressing engine, and a control device for controlling the opening of the capacity regulation valve based on the detection signal of the pressure detector so that the pressure of the discharged side of the bulk type air compressing engine is finite. In this way, the vapor expander driven air compressor can stably recovery the pressure difference energy no matter how much the amount of the vapor is.

Description

technical field [0001] The invention relates to an air compression device driven by a steam expander. Background technique [0002] In equipment that uses steam generated by a boiler, it is generally the case that a pressure reducing valve is used to depressurize the steam of high pressure (such as 1.2 to 1.6MPa) generated by the boiler, and to transfer the steam of low pressure (such as 0.8 to 0.9MPa) to the required equipment supply. Since the pressure difference energy of the steam is discarded when the steam is depressurized by the pressure reducing valve, it is desirable to recover this energy. [0003] As in Japanese Unexamined Patent Application Publication No. 2007-16614, a screw steam expander is proposed to drive a generator to recover the pressure difference energy of steam as electrical energy. Generally, a generator needs to be operated at a constant speed, but if the speed of the screw steam expander is kept constant, the steam pressure on the low-pressure si...

Claims

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Application Information

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IPC IPC(8): F04C23/00
Inventor 松隈正树
Owner 코벨코컴프레서가부시키가이샤
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