CN205561925U - Axial magnetic field's turbine sensor impeller - Google Patents

Abstract

The utility model discloses an axial magnetic field's turbine sensor impeller, including impeller, position sleeve core and axial magnet, the impeller fixed mounting be in the location core is sheathe in, and the location core is sheathe in and is equipped with radial trompil, and the axis of radial trompil is perpendicular and crossing with the axis of impeller, and axial magnet installs in the radial trompil and be fixed with location core cover. Location core cover is cylinder, the axis of location core cover and the dead in line of impeller, blade on the impeller outer wall equallys divide the impeller outer wall for the same fluid passage of size, will the utility model discloses use with the sensor of outside is supporting, it is sensitive to have a reaction, simple structure, interference killing feature advantage such as strong.

Description

A kind of turbine sensor impeller of axial magnetic field

Technical field

This utility model relates to sensor impeller field, is specifically related to the structure of pipe interior sensor impeller.

Background technology

Existing turbine flow transducer is a kind of delicate flow measuring instruments, joins with corresponding flow totalizer meter Set can be used for measuring flow and the total amount of liquid.It is widely used in the meter in the fields such as oil, chemical industry, metallurgy, scientific research Amount, control system.Turbine flow transducer equipped with sanitary fitting can apply to pharmaceutical industry.Fluid stream Through sensor housing, due to impeller blade with flow to have certain angle, the impulse force of fluid makes blade have to turn Kinetic moment, overcomes the rear blade of moment of friction and fluid resistance to rotate, and stabilization of speed after equalising torque, one Under conditions of Ding, rotating speed is directly proportional to flow velocity, and owing to blade has magnetic conductivity, it is in signal detector (by forever For a long time magnet steel and coil composition) magnetic field in, the blade cuts magnetic line of force of rotation, periodically change coil Magnetic flux, so that coil two ends induce electric impulse signal, after amplifier installation amplifies shaping, passes through Display shows.But, the magnetic exposure used due to prior art is outside near pipeline at impeller, thus holds Easily disturbed by outside magnetic bodies, cause measuring the phenomenons such as inaccurate or instrument malfunction.

Utility model content

For solving the problems referred to above, the utility model proposes the turbine sensor impeller of a kind of axial magnetic field, will axially Distribution of magnets is arranged on locating core and puts, thus reduces by external interference.This utility model solves above-mentioned technology The scheme of problem is as follows:

The turbine sensor impeller of a kind of axial magnetic field, including impeller, location core retainer plate and axial magnet, impeller is solid Dingan County is contained in described locating core and puts, and locating core puts and is additionally provided with radial aperture, and the axis of radial aperture is vertical also And with the axes intersect of impeller, axial magnet is installed in radial aperture and fixes with location core retainer plate.

Wherein, location core retainer plate is cylinder, the axis of location core retainer plate and the dead in line of impeller.

Wherein, described impeller outer wall is divided into the fluid passage that size is identical by the blade on impeller.

Wherein, the number of axial magnet is 4.

Of the present utility model being designed with the axial magnet inductor as external sensor, axial magnet is along with leaf The rotation of wheel and rotate, diametrically by the change of magnetic pole and external sensor mutual induction, it is possible to make sensing Device sensing is sensitiveer, is affected relatively reduced by external magnetic field.

Accompanying drawing explanation

Fig. 1 is utility model scheme of installation；

Fig. 2 is utility model front view；

Fig. 3 is utility model top view.

Detailed description of the invention

Elaborating embodiment of the present utility model below, the present embodiment is with technical solutions of the utility model Implement under premised on, give detailed embodiment and concrete operating process, but of the present utility model Protection domain is not limited to following embodiment.

Embodiment

As Figure 1-3, present embodiment discloses the turbine sensor impeller of a kind of axial magnetic field, including impeller 1, location core retainer plate 2 and axial magnet 3, impeller 1 is fixedly mounted on the core retainer plate 2 of location, on the core retainer plate 2 of location Being provided with radial aperture 4, the axis of radial aperture 4 is vertical and axes intersect with impeller 1, and axial magnet is pacified Install to fix in radial aperture and with described location core retainer plate.

Wherein, location core retainer plate 2 is the cylinder of end seal, the axis of location core retainer plate 2 and the axis of impeller 1 Overlap.

Wherein, the outer wall of impeller 1 is divided into the fluid passage that size is identical by the blade on impeller 1.

Wherein, the number of axial magnet 3 is 4.

Axial turbine sensor impeller in embodiment, impeller end can also seal for other form, locating core Set 2 can be other form with the connected mode of impeller 1, and location core retainer plate 2 and impeller axial restraint, in power Together around axial-movement both effect is lower, the locating core in embodiment puts and is provided with 4 cylindrical holes, will be fixed Position core retainer plate 2 is divided into four identical arc lobes of size, and the number of embodiment Leaf is designed as 4, uniformly It is distributed on impeller outer wall, can be identical disclosed in the structure of blade and prior art, it is also possible to slightly at processing Reason, it is possible to impeller rotates under the flowing of fluid, and keeps stable rotating speed after flow speed stability；With Time, in order to enable preferably to be applicable to varying environment, the perforate that blade number in embodiment and locating core put Number is it can also be provided that more can also reduce to 1, and the shape in hole can also be other shape, but Supporting with selected axial magnet shape.

This utility model solve turbine magnetic field sensor in prior art easily by externally-applied magnetic field disturbed Problem, in prior art, the magnetic field of turbine magnetic field sensor is integrally fixed at outside impeller, such exposed magnetic field Easily by outside magnetic bodies, the such as interference such as cell phone, external magnet, thus cause electromagnetic signal not Steady or deviation occurs, destroy the due susceptiveness of sensor and accuracy.The most again by outside pulse letter Number detection device carries out shaping and shows, thus is reflected intuitively by the flow velocity of fluid.

Claims (4)

1. the turbine sensor impeller of an axial magnetic field, including impeller, it is characterized in that, also include positioning core retainer plate and axial magnet, described impeller is fixedly mounted on described locating core and puts, described locating core puts and is provided with radial aperture, and the axis of described radial aperture is vertical and axes intersect with described impeller, and described axial magnet is installed in described radial aperture and fixes with described location core retainer plate.

The turbine sensor impeller of a kind of axial magnetic field the most as claimed in claim 1, it is characterised in that described location core retainer plate is cylinder, the axis of described location core retainer plate and the dead in line of described impeller.

The turbine sensor impeller of a kind of axial magnetic field the most as claimed in claim 1 or 2, it is characterised in that described impeller outer wall is divided into the fluid passage that size is identical by the blade of described impeller.

The turbine sensor impeller of a kind of axial magnetic field the most as claimed in claim 1, it is characterised in that the number of described axial magnet is 4.