SU415620A1 - - Google Patents

Description

one

The invention relates to the field of measurement technology and can be used to simultaneously measure the three orthogonal components of the magnetic induction vector.

Known ternary ferrozone ;;. To simultaneously measure the orthogonal components of the magnetic induction vector, it contains a cylindrical ceramic body, on the forming surface of which elliptical grooves are made to secure the turns of the core of permalloy wire in them. These coils are orthogonal to each other and at an angle of 45 ° to the generator surface of the cylinder. A ceramic case with a core and an excitation winding wound into a toroid is inserted into a separate coil with measuring windings orthogonal to it. At this intersection point, the turns of the core lie in the plane of the third measuring winding.

A disadvantage of the known device is the presence of elliptical holes on the ceramic body for securing the turns of the core in them, which significantly complicates the design of the fluxgate.

To simplify the construction of the fluxgate in it, the ferromagnetic core is made in the form of a pipe segment, the lateral surface of which has the form of a lattice with symmetrical

located rhombic holes, wherein the jumpers between the holes are a continuation of each other and form sections of the magnetic circuit in the form of intersecting / coils of the core.

FIG. 1 shows the proposed ferrosonde; in fig. 2 - projections of the grating of the core on the plane of the turns of the measuring windings and the number of equivalent linear ones

cores along the corresponding axes of the fluxgate.

The ferrosonde consists of a body 1, on the generatrix of which the core 2 is placed in the form of a pipe segment of ferro: an augmental material, the lateral surface of which has the form of a lattice formed by rhombic holes. The bridges between these holes are a continuation of each other and form straight sections of the magnetic conductor in the form of intersecting turns of the core fastened at the points of their intersection. The number of turns of the core and the angle at which they intersect are determined by both the dimensions of the rhombic holes and the dimensions of the length of pipe made of ferromagnetic material. An excitation winding 3 and orthogonally disconnected measuring windings 4 are wound on the housing 1 with the core 2. The symmetrical arrangement of the rhombic holes in the core grating 2 reduces the interference signal in the measuring windings 4 when balancing the flux probe produced to separate the even harmonics of the core excitation frequency 2.

Shown in FIG. 1, the arrangement of the lattice of the core 2 is projected on the plane of the turns of the measuring obmotok, lying, them in the corresponding; their planes of the coordinate axes, in the form of straight equivalent hearts. Due to the unequal number of equivalent cores in three orthogonal directions, the same sensitivity to each component of the field will be achieved either by reducing the height of the cPPus 1PO compared to its base, or by matching its selection of the number of turns of the measuring winding along the Z axis (see Fig 2) at the height of the hull equal to the side of its base.

The ferrosonde is placed in an external magnetic field and from the generator to the field winding 3 a variable emf is applied. E-vol. - Under the action of the components of the vector of external magnetic induction in the measuring windings 4, an emf is induced. е.х,%, BZ, proportional to the corresponding .components of the vector gender.

These signals are amplified, detected, and measured using three measuring instruments.

The ferromagnetic core 2 can be made from a pipe or from a permallo sheet with shtampa or with a pattern. The blank is placed on the body, and the ends of the lattice bridges are welded at points 5. The core 2 on the body 1 can be fixed by glueing at several points or simply by pressing with turns, the excitation winding 3.

Subject invention

A three component ferrosonde containing a body, a closed ferromagnetic core, excitation and measuring windings, characterized in that, in order to simplify the design, the ferromagnetic core is made in the form of a pipe segment, the lateral surface of which has the form of a grid with symmetrically located rhombic holes, The bridges between the holes are a continuation of each other and form sections of the magnetic circuit in the form of intersecting turns of the core.

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