CN2608992Y - Magnetic ring component part of ferrite electric meter magnetic push bearing having compensating ring - Google Patents

Abstract

The utility model relates to a magnetic ring component of ferrite electricity meter magnetic thrust bearing with a compensation ring. The pole face double-pole ferrite magnetic ring (2) is arranged inThe utility model relates to a magnetic ring component of ferrite magnetic bearing with a compensation ring, the double polar ferrite magnetic ring on the polar surface(2) is positioned in the magneti a magnetic ring lining (3). The pole face of the magnetic ring is provided with a compensation ring (1). The compensation ring (1) is arranged in a magnetic thrust meter; thus, the height of the magnc ring sleeve(3). The compensation ring(1) is positioned on the polar surface of the magnetic ring. The component is positioned in the magnetic meter, which can make the height of the meter in the ranetic thrust meter does not change with the change of temperature in the range of temperature of-40 to + 50 DEG C. Thus, the ferrite magnetic thrust meter can replace the aluminum nickel cobalt magnetige of minus 40 to plus 50 DEG C, and can not change with the changing of the temperature, thereby, the ferrite magnetic meter can be used for displacing the aluminum, nickel and cobalt magnetic meter,c thrust meter in the range of the temperature with good quality and low cost. which has the advantages of high quality and low price.

Description

The magnetic ring component of the ferrite electricity meter magnetic bearing of band compensated loop

Technical field

The utility model relates to the watt-hour meter magnetic bearing, specifically is the magnetic ring component of the ferrite magnetic thrust bearing of band compensated loop.

Background technology

China is in one and pushes away table by ferrite magnetic and replace the initial stage that aluminium-nickel-cobalt magnetic pushes away table, because the requirement for height of dial plate that magnetic pushes away table is the not change of Yin Wendu and changing in-40～+ 50 degrees centigrade temperature range, because ferritic temperature coefficient is too big, height to dial plate is too big with Temperature Influence, thereby need temperature compensation, though patent ZL02228579.2 makes over-compensation to the ferrite magnetic push shaft, there is Lieque limit down in it:

1, can only compensating action be arranged to axial single-stage magnet ring, and be the compensating action that do not have of the bipolar magnet ring of pole-face to magnet ring, be the bipolar magnet ring of pole-face and China adopts.

2, be mounted on the external diameter owing to it, too big to the waste of compensative material, only following magnet ring is compensated usually, thereby the installation of magnet ring is asymmetric about having occurred, and causes the difficulty in the sale.

3, can only be used in anisotropic ferrite magnet ring compensation, and compensate, then surpass the area of permission owing to area is excessive for the isotropic ferrite magnet ring.

Fail to replace the aluminium-nickel-cobalt magnetic thrust bearing based on top reason patent ZL02228579.2, it is the requirement in incompatibility market.

Summary of the invention

The purpose of this utility model is the magnetic ring component that a kind of ferrite magnetic that can replace aluminium nickel cobalt bearing table in-40～+ 50 degree celsius temperature scopes of design pushes away the bearing of table.

The magnetic ring component of the ferrite magnetic thrust bearing of the utility model band compensated loop comprises the bipolar ferrite bead of magnet ring lining, pole surface, is connected in parallel on compensated loop on the magnet ring pole-face.

The material of compensated loop can be the magnetic temperature compensating alloy soft magnetic material, and it is circular that compensated loop should be.

Make product through test, it is in-40～+ 50 degrees centigrade temperature range, and the height of dial plate all not have to change, so dresses up ferrite magnetic and push away table and can replace aluminium-nickel-cobalt magnetic fully and push away table, thereby just has following superiority:

1, ferritic price is low more than aluminium nickel cobalt, can reduce cost;

2, ferritic coercivity is several times of aluminium nickel cobalt, can prolong the life-span of ammeter;

3, the ferrite bearing is highly sensitive, can improve the qualification rate that ammeter is produced, and enhances productivity;

4, the ferrite bearing table of band compensated loop is better than aluminium nickel antiwhip;

5, the recovery of ferrite bearing is good, promptly will return the such temperature cycles of normal temperature through the normal temperature of associating to high temperature to low temperature every year, and the error of ammeter will change in each circulation, but ferritic variation is littler.

Description of drawings

Accompanying drawing is the structural drawing of the magnetic ring component of the ferrite electricity meter magnetic bearing of band compensation.

Embodiment

According to shown in Figure 1, ferrite bead 2 is contained in the magnet ring lining 3, and compensated loop 1 is contained on the pole surface of magnet ring cover 2, and links to each other with magnet ring cover 3.

Claims (2)

1, a kind of magnetic ring component of the ferrite magnetic thrust bearing with compensated loop, comprise the bipolar ferrite bead of pole surface (2), it is characterized in that the bipolar magnet ring of pole surface (2) is contained in the magnet ring cover (3) in addition, compensated loop (1) is connected in parallel on the bipolar ferrite bead of pole-face (2), and links to each other with magnet ring lining (3).

2, according to the magnetic ring component of the ferrite magnetic thrust bearing of the described band compensated loop of claim (1), the material that it is characterized in that compensated loop (1) is the annulus of magnetic temp compensating magnetically soft alloy material.