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2012년도

Korea Invention Patent Exhibition
전시선정기술 게시글의 상세 화면
제목 반작용식 스팀 터빈
분야 기계/금속 년도 2012
업체명 ㈜에이치케이터빈 권리번호 10-0905963 등록일 2012-10-29

  전시품 소개

? 고대 그리스의 위대한 발명가이자 수학자인 heron에 의해 고안된 heron’s aeolipile에서 영감을 얻은 hk turbine은 노즐 분사에 의한 반작용으로 디스크를 회전시키며, 노즐을 통과한 스팀을 다단으로 연결하여 에너지 변환효율을 증가시킨 세계 유일의 획기적인 터빈입니다.

? hk turbine은 노즐에서 뿜어내는 반작용(뉴턴의 운동의 제 3 법칙: 작용-반작용의 법칙)에 의해 작동하는 제품으로 노즐에서 뿜어져 버려지는 스팀을 몇 번이고 재사용 하게 함으로써 에너지 변환효율을 높인 새로운 원리의 스팀 터빈입니다.

? hk turbine에서는 보일러에서 나오는 높은 압력차를 다단으로 나누어 각단의 압력차를 일정하게 함으로써 노즐로부터 분사되는 스팀의 속도를 낮출 수가 있어, 단단으로 고압을 이용하는 헤론터빈보다 훨씬 저속으로 회전하더라도, 그 노즐의 속도가 분사되는 스팀의 속도에 근접할 수 있어 높은 에너지 변환효율을 얻을 수 있다는 장점을 가지고 있습니다.


  특장점


? 포화증기에서 취약한 기존 스팀 터빈과는 다르게 hk turbine은 포화증기 영역에서도 정상운전이 가능하며, 따라서 저온저압의 폐열 발전에 가장 적합한 터빈입니다.

? 터빈의 구성 부품 수가 적으며, 가공이 용이하기 때문에 제작기간 및 유지보수 비용이 저렴하여 타사 제품에 비해 우월한 경제성을 가지고 있습니다.

? 기존 블레이드 타입 터빈은 저압에서 미세물방울 입자에 의한 손상으로 포화증기 범위에서 운전이 불가능하나 hk turbine은 이 범위에서도 운전이 가능 합니다

? hk turbine은 버려지는 스팀의 열에너지를 회수하여 전력을 생산하는 제품으로, 가치 없이 버려지는 것을 가장 가치 있는 것으로 만드는 제품으로 발전시장에 적합한 솔루션입니다.




  invention information


The present invention relates to a reaction type steam turbine.
In general, a steam turbine is one of motorized devices to convert thermal energy from pressurized steam into mechanical motion. Due to low vibration, great efficiency, and high-speed and large-horsepower, the steam turbine has been widely used as a main engine for thermal power plants and ships. The steam turbine injects high-temperature and high-pressurized steam produced by a boiler from nozzles or fixed blades, and expands the steam to generate a steam flow at high velocity. Then, the high-velocity steam flow is directed to strike turbine blades, which results in impact or reaction that drives a shaft to rotate. Thus, the steam turbine may include a plurality of nozzles to convert thermal energy from steam into velocity energy and a plurality of turbine blades arranged in parallel to the nozzles to convert the velocity energy into mechanical motion. In the conventional steam turbine, as pressurized steam flow expands from a boiler to a steam chest, it rotates turbine blade and shaft, and then finally moves to an exhaust chest. The steam in the exhaust chest is then sent to a condenser to be cooled, and then may be returned to the boiler by a feed-water pump or may be exhausted to atmosphere.

However, the conventional steam turbine as described above is characterized in generating rotation torque by a flow of a high velocity steam striking turbine blades that rotate at a high speed, and thus when condensate water is mixed with the steam, the turbine blades may be damaged. Hence, the steam flowing into the turbine blades is required to be managed, avoiding the condensate water being generated. Further, the turbine blades need to be manufactured with expensive materials, and assembling such turbine blades is complicated, thereby increasing the manufacturing cost. A force to rotate the turbine axis is in proportion to momentum of steam entering the turbine blades, and the momentum of the steam is determined by various factors, such as the number and the surface area of the turbine blades and an inlet angle of the steam. However, since the steam striking the turbine blades changes velocity and direction, designing the shapes and angles of the blades in consideration of these changes increases design complexity, and thus there is a limitation in manufacturing a high-efficiency turbine. Moreover, since a plurality of turbine blades rotate, enclosed by a housing, a space should be provided between an end of each turbine blade and an inner circumference of the housing in consideration of a thermal expansion of the turbine blade. However, steam is leaked through the space, and therefore a loss of pressure occurs, thereby deteriorating a thermal efficiency of the turbine.

The present invention provides a reaction type steam turbine including: a housing divided into a plurality of chambers a turbine shaft rotation coupled with the housing and has a plurality of steam passages along the axial direction a plurality of injection units injecting steam supplied from the steam passage into each chamber to generate reaction force for rotating the turbine shaft and a plurality of inlets formed on the turbine shaft to guide injected steam in the chambers to each steam passage.

For low cost manufacturing and high efficiency, it is desirable that the injection units are formed in curved pipes, the inlets are formed in a radial direction, and the turbine shaft is divided into a plurality of short shafts, each having a closed end.

The reaction type steam turbine has no blades. Thus, the operating stability of a steam turbine can be maintained even when condensate water is mixed with the steam, and manufacturing costs can be significantly reduced. Further, in order to reduce a loss of energy, the flow resistance of the steam is remarkably reduced or pressure leakage is prevented, thereby obtaining a low-cost and high-efficiency turbine.



  feature of the product


  hk turbines, unlike all existing conventional turbines, are operable in  saturated, liquefied, and low heat environments.  consequently, hk turbines are the only suitable turbines in the world for waste heat generation with low temperature and pressure environments.
 
  simple structure and design of rotor allow our manufacturing processes to be automated for machining and assembling.  as a result, mass production is feasible and manufacturing, maintenance and repair costs are greatly reduced.  in addition, greatly reduced number of parts, defect factors (since there are not any blades to erode and/or breakdown) and being compatible with a variety of material ions, propel hk turbine's economic advantages.  
 
 besides these important economical advantages, hk turbines provide green energy solutions in various generation markets.  our ability to collect waste heat energy (steam) from condensers and generate electricity otherwise neglected or lost in the generation processes, is one of our accomplishments and strengths.
 
  unlike hk turbines, conventional blade type steam turbines often have problems of breakdowns and erosions from the collisions of micro water vapor lets and they simply do not work in saturated steam conditions.
 
  hk turbines are revolutionary not just because of its obvious economic means but they are compatible with low pressure and low quality steam conditions.  we harvest and re-use waste heat energy in the generation cycle processes:  hk turbines are, in essence, green innovations at work!

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