Sample spinning cell for nmr of flowing systems

Claim 2

A sample spinning cell for nuclear magnetic resonance of flowing systems wherein suitable rotation of the flowing liquid sample and of the reference solution produce equivalent signal to noise ratio enhancement for both without the employment of external motive force to cause said rotation comprising in combination: a hollow cylindrical glass housing adapted to be connected to a chemical system whereby a flowing liquid sample stream containing hydrogen nuclei of unknown density is admitted thereto; means rotatably fixed in said cylindrical housing supporting means containing a reference solution of known hydrogen nuclei density therein and responsive to said flowing liquid sample to direct said flowing liquid sample through said housing and simultaneously cause rotation of said flowing liquid sample and said reference solution in spaced relationship to each other in said housing; radio-frequency transmit coils with radio-frequency oscillator means coupled thereto for producing a signal which interacts with the simultaneously rotating liquid sample and reference solution whereby frequency displaced signals are generated having a frequency displacement there-between characteristic of the nuclei density of the flowing liquid sample; and radiofrequency receiving means on said cylindrical housing for detecting the displaced signals.

Claim 3

The invention in accordance with claim 1 wherein said cylindrical glass housing is formed with a closed end and oppositely disposed offset ports in the cylindrical wall thereof adjacent said closed end whereby said flowing liquid is coupled and admitted to said housing and wherein said means rotatably fixed in said housing comprises turbine means substantially extending throughout the length of said housing and pivotally supported therein along the longitudinal axis thereof with its blades in cooperative relationship with said ports and thereby adapted to cause rotation of said turbine in response to said flowing liquid and to direct said flowing liquid through said housing wherein in the passage therethrough it is formed into a spinning column of said liquid.

Claim 4

The invention in accordance with claim 2 wherein said turbine means comprises in combination a second cylindrical glass housing adapted to fit within said cylindrical glass housing; a disk affixed in said second housing adjacent a first end thereof supporting spaced turbine blades curved towards said ports and formed with apertures between said blades through which said blades direct said flowing liquid into said housing while causing rotation of said turbine in reaction to said flowing stream; first pivot means affixed to the top of said blades at their point of intersection along the longitudinal axis of said second housing adapted to engage a pivot bearing means formed in the said closed end of said housing; detachable spacer-sealing means affixed in a second end of said housing having a reduced section directed inwardly thereof and provided with passages therethrough whereby said flowing liquid is drained from said housing.

Claim 5

The invention in accordance with claim 3 wherein said means containing a reference solution of known hydrogen nuclei density comprises in combination: a double wall hollow cylindrical container consisting of a first hollow glass cylinder and a second hollow glass cylinder coaxial with said first cylinder and forming therebetween an annulus in which said reference solution is contained, and means sealing the ends of said coaxial cylinders together whereby said reference solution is retained in said annulus, said double wall hollow cylindrical container supported in said second cylindrical glass housing and rotatably therewith at one end by means of said disk and at the opposite end by means of said detachable spacer-sealing means whereby said reference solution is positioned intermediate said spinning column of said liquid and said receiving coil.

Claim 6

A sample spinning cell for nuclear magnetic resonance of flowing systems wherein suitable rotation of the flowing liquid sample and of the reference solution produce equivalent signal to noise ratio enhancement for both without the employment of external motive force to cause said rotation comprising in combination: a hollow cylindrical glass housing provided with a closed end and oppositely disposed offset ports in the cylindrical wall thereof adjacent said closed end whereby said flowing liquid is coupled and admitted to said housing; turbine means for simultaneously rotating said reference solution on the longitudinal axis of said housing and spiralling said flowing liquid around said reference solution consisting of a hollow sealed glass shaft containing said reference solution and having turbine blades affixed to one end thereof and pivotally supported in said housing along the longitudinal axis thereof with said blades opeRatively positioned in regard to said ports and adapted in response to said flowing liquid to cause rotation of said reference solution and spiralling of the flowing liquid around said reference solution in the annulus formed by the shaft and the interior surface of said housing; a receiving coil wound on the exterior surface of said housing intermediate its ends, and means for drawing the flowing liquid from said housing.

Claim 7

A sample spinning cell for nuclear magnetic resonance of flowing systems wherein suitable rotation of the flowing liquid sample and of the reference solution produce equivalent signal to noise ratio enhancement for both without the employment of external motive force to cause said rotation comprising in combination: a hollow cylindrical glass housing provided with a closed end and oppositely disposed offset ports in the cylindrical wall thereof adjacent said closed end whereby said flowing liquid is coupled and admitted to said housing; turbine means for simultaneously rotating said reference solution on the longitudinal axis of said housing and spiralling said flowing liquid around said reference solution consisting of a hollow sealed glass shaft containing said reference solution and having turbine blades affixed to one end thereof and pivotally supported in said housing along the longitudinal axis thereof with said blades opeRatively positioned in regard to said ports and adapted in response to said flowing liquid to cause rotation of said reference solution and spiralling of the flowing liquid around said reference solution in the annulus formed by the shaft and the interior surface of said housing; a receiving coil wound on the exterior surface of said housing intermediate its ends, and means for drawing the flowing liquid from said housing.