CS240228B1 - Nuclear magnetic resonance spectrometer probe's arm and head coupling - Google Patents

Abstract

The solution relates to the binding of the head and the shoulder nuclear magnetic resonance spectrometer probes. The design is a turbine part of the probe arm and is completely separated from the probe head. Probe head is provided with a longitudinal groove into which it is inserted cuvette and heat insulating part terminated with a spherical ground-glass joint heat transfer medium stored suspended in the probe arm. The longitudinal groove is in upper corner bridged by locking pin on which the locking screw that fixes abuts working position of probe head. Construction the probe and head arm connections are determined especially for nuclear magnetic spectrometers resonance.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to the construction of a nuclear-magnetic resonance spectrometer probe head and arm probe.

A frequency-activated sample of the test substance stored in the cuvette rotates in the magnet gap along a vertical axis. In practice, the activation, response and rotation of the sample are carried out by means of a probe head mounted on the probe arm through which the probe head is introduced into the magnet gap. The probe head carries a turbine to spin the sample in the cuvette using compressed air. The requirement for high resolution and sensitivity requires precise tuning and mechanical alignment of the probe head for different atomic nuclei and different swinging diameters. In practice, there is a requirement for rapid measurement of the examined samples. Thus, greater emphasis is placed on the possibility of confusion investigated nuclei possibly diameters cuvettes rapid and ¹ \ simple manner.

The known construction arrangements are? designed so that the turbine is either part of the head or fixed to the head. The disadvantage of the design is the disconnection of the pneumatic inlets during replacement. In a more preferred embodiment, the pneumatic inlets of the turbine are connected automatically after the probe head has come to rest on the base of the probe arm. A disadvantage of this embodiment is the complexity of the probe head through the passageways for supplying compressed air to the turbine and the difficulties encountered in the temperature mode,

The above-mentioned disadvantages are eliminated by the construction of the coupling head and probe arm of the nuclear magnetic resonance spectrometer according to the invention, characterized in that the probe arm is elongated at the upper edge of the side wall by a tapered prism forming the turbine stator. by air supply to the turbine and with a speed sensor, which are housed in a tapered prism with a detent screw.

On the side wall of the probe arm there is a recess for hanging the hiranol-like probe head, which is provided on its narrower side with a longitudinal groove, into which a thermal insulating part terminated by a ball grip parallel to the longitudinal axis of the probe head.

Claims (1)

Binding of a nuclear magnetic resonance spectrometer probe head and arm, characterized in that the probe arm (2) is elongated at the upper edge of the side wall by a tapered prism forming a turbine stator (4) in which the rotor (3) of the turbine with cuvette (5) connected to the turbine air inlet (8) and to the speed sensor (6), which are housed in a tapered prism together with a detent screw (7), and abutting on the side wall of the arm (2) there in the probe arm, the longitudinal groove being bridged in the upper corner by a locking pin adjoining the locking screw. The main advantage of the invention is that the turbine is part of the probe arm and is completely separated from the probe head, thereby achieving a considerable simplification of the probe head and allowing wide variation of the probe head in three directions in size. An exemplary embodiment of the present invention is shown in the drawing where the axial section of the head and arm of the nuclear magnetic resonance spectrometer probe is shown. The probe arm 2 is extended at the upper edge of the side wall by a tapered prism forming the turbine stator 4 into which the turbine rotor 3 with the cuvette 5 is inserted. The turbine stator 4 is connected to the turbine air inlet 8 and to the speed sensor 6. in a tapered prismatic projection of the probe arm 2; On the side wall of the probe arm 2, a recess 11 is fixed, in which the probe head 1 is hinged according to the dashed contour and swiveled to the working position in which it is fixed by a locking screw 7. The prismatic probe head 1 has a longitudinal groove 71 on the upper narrower side. The longitudinal groove 71 is inserted parallel to the longitudinal axis of the probe head 1 by means of a ball joint 10, which, after the probe head 1 has been swiveled into the working position, rests on the inlet 9 The heat transfer medium is suspended in the arm 2 of the probe. The cuvette 5 inserted into the stator 4 of the turbine extends up to the thermal insulation part 51 inserted in the longitudinal groove 71 of the probe head 1. After removing the turbine rotor 3 and the cuvette 5 from the turbine stator 4, loosening the locking screw 7 and tilting it out of the working position, the probe head 1 can easily be replaced by another one after it has been disengaged from the recess 11. The probe-arm bonding construction of the invention is suitable for nuclear magnetic resonance spectrometers. OF THE INVENTION is fixed a recess (11) for suspending a prismatic probe head (1), which is provided on its upper narrow side with a longitudinal groove (71) into which a thermal insulating part (51) is inserted parallel to the longitudinal axis of the probe head (1). terminated by a ball-bearing (10) abutting the inlet (9) of the heat transfer medium, supported resiliently in the probe arm (2) and the longitudinal groove (71) being bridged in the upper corner by a locking pin (72) adjoining the locking screw (7).