IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0226055
(2002-08-22)
|
발명자
/ 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
4 |
초록
▼
A double-ended wrench is described having an elongated handle formed substantially nontwisted extending in a longitudinal direction, a first wrench head positioned at one end of the wrench and a second wrench head positioned at the other end thereof. Each wrench head has an orifice with an imaginary
A double-ended wrench is described having an elongated handle formed substantially nontwisted extending in a longitudinal direction, a first wrench head positioned at one end of the wrench and a second wrench head positioned at the other end thereof. Each wrench head has an orifice with an imaginary axis of wrench rotation. The first wrench head is positioned relative to the second wrench head whereas the axis of wrench rotation of the first wrench head is substantially perpendicular to the axis of wrench rotation of the second wrench head. The elongated handle comprises a first handle portion connecting to the first wrench head, and a second handle portion connecting to the second wrench head. Each handle portion has an elongated cross-sectional shape when viewed in a cross-sectional plane perpendicular to the longitudinal direction. Each cross-sectional shape is elongated in a predetermined direction, and, the first handle portion is positioned relative to the second handle portion whereas the cross-sectional shape of the first handle portion is elongated in a direction substantially perpendicular to the direction in which the cross-sectional shape of the second handle portion is elongated.
대표청구항
▼
A double-ended wrench is described having an elongated handle formed substantially nontwisted extending in a longitudinal direction, a first wrench head positioned at one end of the wrench and a second wrench head positioned at the other end thereof. Each wrench head has an orifice with an imaginary
A double-ended wrench is described having an elongated handle formed substantially nontwisted extending in a longitudinal direction, a first wrench head positioned at one end of the wrench and a second wrench head positioned at the other end thereof. Each wrench head has an orifice with an imaginary axis of wrench rotation. The first wrench head is positioned relative to the second wrench head whereas the axis of wrench rotation of the first wrench head is substantially perpendicular to the axis of wrench rotation of the second wrench head. The elongated handle comprises a first handle portion connecting to the first wrench head, and a second handle portion connecting to the second wrench head. Each handle portion has an elongated cross-sectional shape when viewed in a cross-sectional plane perpendicular to the longitudinal direction. Each cross-sectional shape is elongated in a predetermined direction, and, the first handle portion is positioned relative to the second handle portion whereas the cross-sectional shape of the first handle portion is elongated in a direction substantially perpendicular to the direction in which the cross-sectional shape of the second handle portion is elongated. id specific position, measuring said one parameter by means of electrodes arranged in said narrowed flow passage, and calculating the final cross-section fractions for the phases from the differential pressure, from values known beforehand regarding the mass densities of the phases, from the respective gas and liquid phase velocities, from said one parameter and from said cross-section area. 2. The method of claim 1, wherein the measurements of said one parameter are made using relatively wide electrodes for determining the velocity of one phase by cross-correlation, and simultaneously using relatively narrow electrodes for determining the velocity of the other phase or both phases by cross-correlation. 3. The method of claim 1, wherein differential pressure is measured between said first and second positions by means of lead-throughs/pressure taps, through a pipe wall at, and upstream or downstream of, a sensor body placed substantially on a pipe axis to provide said narrowed flow passage between the pipe wall and the sensor body, said sensor body at the same time comprising pairs of wide and narrow electrodes for measuring said one parameter, counter electrodes being constituted by said pipe wall or a separate tubular counter electrode device arranged close to the inside of said pipe wall, however insulated electrically therefrom. 4. The method of claim 1, wherein the cross-section fractions that have been determined, are combined with the already determined velocities of the phases, as well as the cross-section area of the narrowed passage, in order to determine the volume flow rates of the individual phases at the current conditions at the location. 5. The method of claim 4, wherein the combination process is adjusted using a suitable calculating tool for determining volume flow rates at standard pressure and temperature conditions. 6. The method of claim 4, wherein the volume flow rates that have been determined, are combined with the mass densities known beforehand regarding the individual phases, in order to determine the mass flow rates of the individual phases under the current conditions at the location. 7. The method of claim 6, wherein the combination process is adjusted using a suitable calculation tool for determining mass flow rates at standard pressure and temperature conditions. 8. The method of claim 1, wherein a further differential pressure is measured between a third position at the narrowed flow passage and a fourth position downstream or upstream of said passage, whereby the velocity of one of said phases is determined additionally by cross-correlating the two differential pressure measurements. 9. The method of claim 1, wherein said differential pressure is measured by means of lead-throughs/pressure taps through a pipe wall, upstream or downstream of, and at a sensor insert that consists of a converging passage continuing in said narrowed flow passage and ending in a diverging passage, and that the measurement of said one parameter is made by means of electrodes arranged on the inside of said narrowed flow passage in said sensor insert. 10. A system for determining cross-section fractions, as a basis for flow rate determination, for individual phases in a flow of a multiphase mixture at a location in a pipe, velocities of gas and liquid phases respectively in the flow being determined by cross-correlating measurements of one of parameters permittivity and conductivity of the mixture, carried out at a specific position at said relevant location and upstream or downstream thereof the measurements of said one parameter also providing direct information related to the cross-section phase fractions, said system comprising a narrowed flow passage in the pipe with means for measuring differential pressure between a first position upstream or downstream of said narrowed passage and a second position at said passage, said passage having a known cross-section area, whereby said narrowed passage being
※ AI-Helper는 부적절한 답변을 할 수 있습니다.