CN201256053Y - High voltage transformer magnetic ring suitable for high intensity discharge lamp trigger - Google Patents

Abstract

The utility model provides a magnetic ring of a high voltage transformer, which is adapted to high-strength discharge lamp triggers. The outline of the magnetic ring is a ring shape with slits, and the shape of the cross section of the magnetic ring is a similar rectangle of which four angles are inverted into arc shapes. As the cross section area of a magnetic conductor is reduced due to nonuniform radial dimension of the ring cross section of the magnetic ring, and then the cross section of the magnetic ring can be kept to be identical by increasing the thickness of the magnetic conductor of the magnetic ring. The utility model has the advantages that on the design of the cross section of the rectangle, the magnetic ring utilizes space to the utmost extent to guarantee a relatively large cross section of the magnetic ring. When being used in a high-strength discharge lamp, the magnetic ring can be mounted by a magnetic ring fixing clamp, which not only meets shape requirements of mounting, but also guarantees the uniformity of the sectional area of the whole magnetic circuit, and resolves the problem of instant magnetic saturation of local neck-shaped detail portions, thereby guaranteeing the shape of the spire of trigger pulse not to be distortional, the width not to be reduced, and the discharge trigger rate to be higher.

Description

A kind of magnet ring that is applicable to the high-tension transformer of high-intensity discharge lamp trigger

Technical field

The utility model relates to a kind of magnet ring that is applicable to the high-tension transformer of high-intensity discharge lamp trigger.

Background technology

The principle that high-intensity discharge lamp adopted is: use light a lamp electrion in the voltage triggered fluorescent tube of the burst pulse of tens thousand of volts, based on the operation principle of high-intensity discharge lamp, need a trigger be set for high-intensity discharge lamp, be used for triggering for generating point modulating voltage.Comprise a transformer in the trigger, magnet ring must be arranged in the transformer to guarantee effective coupling and the electric energy conversion usefulness between primary coil and the secondary coil.Except that the loss of coil and magnet ring self, conversion usefulness also depends on whether occur in the magnet ring or the magnetic saturation phenomenon appears in the part.Under the prerequisite that guarantees enough magnetic flux, the magnet ring cross section is homogeneous everywhere also, could guarantee also can not occur when the electric current peak position local magnetically saturated phenomenon.The product that does not wait in some magnet ring cross sections usually appears in the present magnet ring design, little for the design problem that conventional pulse transformer is such, but to some super-high pressure pulse transformers, during the transient pulse peak position of tens thousand of volts, the pulse current peak position of transformer circle may reach thousands of even tens thousand of volts.If the magnet ring material is improper, the improper or local magnet ring of magnetic gap width cross section is less, all the magnetic saturation phenomenon may occurs and influence the amplitude of output peak position voltage.

Summary of the invention

The purpose of this utility model provides a kind of magnet ring, this magnet ring is in being used in high-intensity discharge lamp the time, both can adapt to the installation site requirement, guaranteed the homogeneous of whole magnetic circuit sectional area again, thereby guaranteed can not reduce because of the magnetic saturation phenomenon make pulse amplitude in peak position pulse voltage moment of its output.

For achieving the above object, the utility model is taked following technical scheme:

The outline of described magnet ring is an annular, as circle; The cross sectional shape of magnet ring is four jiaos and falls the approximate rectangular of camber to guarantee effective spatial dimension maximum magnet ring cross section is arranged; Because the transient pulse electric current is very big, occur for preventing the magnetic saturation phenomenon, so magnet ring is provided with slot.Characteristics of the present utility model are that also its ring section of described magnet ring is owing to the uneven position of causing the magnetic conductor sectional area to reduce of ring radial dimension, and the thickness that increases the magnet ring magnetic conductor is to keep the unanimity in magnet ring cross section.Because the restriction of application space, the local paragraph density of magnet ring is less, so the enlarged in thickness of this paragraph, thereby has guaranteed the homogeneous in magnet ring cross section.

The beneficial effects of the utility model are: in the design of accurate square-section, maximally utilise the space and guarantee bigger magnet ring cross section; Can cooperate the magnet ring fixed card to install, both be fit to the shape need of installing, eliminate simultaneously that magnet ring partial cross section is less may to form magnetically saturated problem of instant, thereby guarantee that trigger impulse pinnacle shape is undistorted, amplitude does not reduce, and the discharge toggle rate is more reliable.

Description of drawings

Fig. 1 is the schematic diagram after the utility model adds coil;

Fig. 2 is a upward view of the present utility model;

Fig. 3 is the sectional view of the A-A of Fig. 2 to narrow limit section;

Fig. 4 is the sectional view of the B-B of Fig. 2 to the broadside section.

Description of reference numerals: 1-magnet ring; 2-broadside section; The narrow limit of 3-section; The 4-cutout.

Embodiment

Below in conjunction with drawings and Examples the utility model content is described further.

As shown in Figures 1 to 4, the cross sectional shape of magnet ring 1 is four jiaos and falls the approximate rectangular of camber.The minor face of the magnet ring 1 upper section position parallel with the magnet ring axis is broadside section 2, and the position parallel with the magnet ring axis, the long limit of magnet ring 1 upper section is narrow limit section 3.Narrow limit section 3 along the length of magnet ring circumferencial direction less than broadside section 2.2 of narrow limit sections over against magnet ring 1 on a cutout 4 is arranged.The outline that therefore magnet ring 1 has is for circular, and interior profile is that convexly curved circle is arranged.

What this specification was enumerated is better embodiment of the present utility model only, and all equivalent technologies conversion of being done under operation principle of the present utility model and thinking all are considered as protection range of the present utility model.

Claims (2)

1, a kind of magnet ring that is applicable to the high-tension transformer of high-intensity discharge lamp trigger, the outline of magnet ring is the annular that has slot, it is characterized in that: the cross sectional shape of magnet ring magnetic conductor is four jiaos and falls the approximate rectangular of camber.

2, the magnet ring that is applicable to the high-tension transformer of high-intensity discharge lamp trigger according to claim 1, it is characterized in that: its ring section of described magnet ring is owing to the uneven position of causing the magnetic conductor sectional area to reduce of ring radial dimension, and the thickness that increases the magnet ring magnetic conductor is to keep the unanimity in magnet ring cross section.

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