[특허]Hydraulic-based rotational system for solar concentrators that resists high wind loads without a mechanical lock

Skyfuel, Inc.

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Hydraulic-based rotational system for solar concentrators that resists high wind loads without a mechanical lock

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F24J-002/54 F24J-002/38 F24J-002/40 F24J-002/46
미국특허분류(USC)	060/329; 060/468
출원번호	US-0544910 (2009-08-20)
등록번호	US-8904774 (2014-12-09)
발명자 / 주소	Gee, Randall C.
출원인 / 주소	Skyfuel, Inc.
대리인 / 주소	Lathrop & Gage LLP
인용정보	피인용 횟수 : 0 인용 특허 : 174

초록
▼

A rotational system is provided for controlling rotation of one or more solar collectors to track the movement of the sun, to automatically keep the collectors locked in stow position during high wind conditions, and advantageously also to prevent damage to the rotational system due to high pressures caused by high temperature conditions. The system utilizes a bi-directional hydraulic rotational actuator hydraulically connected to a control system. The actuator advantageously includes a system of helical gears and a piston, and the control system includes hydraulic lines equipped with check valves that prevent circulation of hydraulic fluid through the hydraulic lines and the actuator when backpressure is exerted in one of the hydraulic lines as a result of high wind force on the collectors. In addition, the control system advantageously comprises a pressure-relief system to prevent damage to the actuator during high temperature conditions. A single actuator can be used to operate up to sixteen or more large solar collectors.

대표
청구항
▼

1. A rotational actuator system for controlling rotation of a solar collector, said system comprising: a bi-directional motor that establishes a flow direction of hydraulic fluid to cause rotation of a bi-directional rotational actuator through an arc substantially perpendicular to a plane of the ground, wherein the arc has a selected upper limit of about 180 degrees to about 240 degrees;a control system hydraulically connected to said actuator for controlling rotation of the solar collector along the arc in either a clockwise or counter-clockwise direction depending on the flow direction of the hydraulic fluid from the bi-directional motor; wherein the control system and the actuator are connected by a closed-loop hydraulic circuit comprising first and second hydraulic lines;first and second pressure sensors for individually monitoring said first and second hydraulic lines; anda solenoid valve that is opened in response to dual pressure signals from both said first and second pressure sensors. 2. The actuator system of claim 1 also comprising at least one additional solar collector operationally connected to said actuator. 3. The actuator system of claim 1 also comprising: means for causing said actuator to rotate the attached solar collector into stow position under high wind conditions. 4. The system of claim 1 wherein said actuator is capable of exerting between about 250,000 in-lb of torque and about 750,000 in-lb of torque. 5. The system of claim 1 wherein said rotational actuator comprises: a through-shaft having first and second ends and comprising first helical gear teeth;a piston having an inner circumference comprising second helical gear teeth configured to mesh with said first helical gear teeth; and an outer circumference comprising third helical gear teeth;a housing at least partially surrounding said through-shaft and said piston, said housing having an inner surface comprising fourth helical gear teeth configured to mesh with said third helical gear teeth;a first port through said housing for receiving hydraulic fluid, said first port being positioned such that pressure from hydraulic fluid introduced into said housing through said first port causes said piston to move in a first direction away from said first port; anda second port for receiving hydraulic fluid; said second port being positioned such that pressure from hydraulic fluid introduced into said housing through said second port causes said piston to move in a second direction away from said second port;whereby when hydraulic fluid is entering said actuator through said first port, said through-shaft rotates in a first direction and when hydraulic fluid is entering said actuator though said second port, said through-shaft rotates in a second direction; and when no hydraulic fluid is entering said actuator, said actuator is locked such that said through-shaft does not rotate. 6. The system of claim 5 also comprising: said first and second hydraulic pressure lines operationally connected to said actuator through first and second ports; anda bi-directional motor and pump connected to said first and second hydraulic pressure lines. 7. The system of claim 1 also comprising means for relieving pressure in said system under high temperature conditions, such that said actuator is not damaged by high pressure. 8. The system of claim 7 wherein said means for relieving pressure in said system and allowing it to function during high temperature conditions comprise: a pressure relief line operationally connected to said actuator;first and second pressure sensors respectively operationally connected to a computer processor capable of receiving said dual pressure signals from said first and second pressure sensors, and capable of sending a solenoid valve control signal in response to said pressure signals; andsaid solenoid valve in operational connection to said pressure relief line capable of receiving said solenoid valve control signal from said processor;whereby said control signal from said processor opens or closes said solenoid valve. 9. The system of claim 8 wherein said processor is programmed to send said solenoid valve control signal causing said solenoid valve to open when it receives a pressure signal indicating pressures at or above a first selected value from both of said pressure sensors. 10. The system of claim 9 wherein said first selected value is about 6000 psi. 11. The system of claim 8 wherein said processor is programmed to send a signal to said solenoid valve causing it to close when it receives pressure signals from said pressure sensors indicating pressures at or below a second selected value. 12. The system of claim 11 wherein said second selected value is about 4500 psi. 13. The system of claim 8 also comprising a pressure relief valve operationally connected to said pressure relief line. 14. A method of making a rotational actuator system for controlling rotation of a solar collector, said method comprising: providing a bi-directional motor that establishes a flow direction of hydraulic fluid to cause rotation of a bi-directional hydraulic rotational actuator along an arc substantially perpendicular to a plane of the ground, wherein the bi-directional motor and actuator are capable of exerting enough torque to rotate at least one solar collector through the arc having a selected upper limit of about 180 degrees to about 240 degrees;providing a control system for controlling operation of said actuator; andhydraulically connecting said control system to said actuator in a closed-loop hydraulic circuit comprising first and second hydraulic lines;providing first and second pressure sensors for individually monitoring said first and second hydraulic lines; andproviding a solenoid valve that is opened in response to dual pressure signals from both said first and second pressure sensors. 15. The method of claim 14 also comprising connecting to the actuator automatic means for preventing said actuator from being damaged by high pressures caused by high temperature conditions. 16. The method of claim 14 wherein said actuator comprises: a through-shaft having first and second ends and comprising first helical gear teeth;a piston having an inner circumference comprising second helical gear teeth configured to mesh with said first helical gear teeth; and an outer circumference comprising third helical gear teeth;a housing at least partially surrounding said through-shaft and said piston, said housing having an inner surface comprising fourth helical gear teeth configured to mesh with said third helical gear teeth;a first port through said housing for receiving hydraulic fluid, said first port being positioned such that pressure from hydraulic fluid introduced into said housing through said first port causes said piston to move in a first direction away from said first port; anda second port for receiving hydraulic fluid; said second port being positioned such that pressure from hydraulic fluid introduced into said housing through said second port causes said piston to move in a second direction away from said second port;whereby when hydraulic fluid is entering said actuator through said first port, said through-shaft rotates in a first direction and when hydraulic fluid is entering said actuator though said second port, said through-shaft rotates in a second direction; and when no hydraulic fluid is entering said actuator, said actuator is locked such that said through-shaft does not rotate. 17. The system of claim 1, wherein said actuator comprises helical gearing.

이 특허에 인용된 특허 (174)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	> 총 건의 자료가 검색되었습니다. > 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) > 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. > 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) > 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오 > ~ > Text(ASCII format) Excel format

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Hydraulic-based rotational system for solar concentrators that resists high wind loads without a mechanical lock

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (174)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Hydraulic-based rotational system for solar concentrators that resists high wind loads without a mechanical lock

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (174)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼