CN2222858Y

CN2222858Y - High-energy two-stage ignition device for boiler

Info

Publication number: CN2222858Y
Application number: CN 95239370
Authority: CN
Inventors: 戴启震; 严月芬
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-03-14
Filing date: 1995-03-14
Publication date: 1996-03-20
Anticipated expiration: 2005-03-14

Abstract

The utility model discloses a high-energy two-stage ignition device for boilers, which is suitable for the ignition of the large and the medium-sized power plant boilers. The high-energy two-stage ignition device for boilers is mainly composed of an ignition device, a connecting cable, a conductive rod and a semiconductor igniter. The utility model is characterized in that the secondary current limiting resistor of the transformer of a traditional ignition device circuit is omitted; a magnetic diverter is additionally arranged between the primary coil and the secondary coil of the transformer; the number of the ignition loop of the semiconductor igniter is increased to three or more than three. The high-energy two-stage ignition device for boilers can work continuously, and fireballs generated by the ignition loop are big and uniform.

Description

Boiler high energy two-stage ignition device

The utility model relates to a kind of boiler high energy two-stage ignition device, is particularly useful for the high energy two-stage ignition of big-and-middle-sized station boiler.

At present, the igniter of use on boiler mainly is made of igniter, stube cable, conducting rod and semiconductor discharge plug etc., igniter wherein is again to be made of elements such as transformer, rectifier, capacitor, resistance, though this igniter also can be used for ignition of the boiler, every work half a minute just must just can enter following one-period by one minute break.Its reason is the moment of the voltage discharge on capacitor C, makes transformer be in short-circuit condition.Though the level loop is connected to current-limiting resistance secondarily, plays some metering functions.But for the high voltage about 2000V, its charging current still considerably beyond the maximum output current of transformer, causes the transformer secondary output coil heating serious.The resistance power consumption is very big.In addition, it is a circle only that semiconductor discharge plug is got angry circle, is difficult to accomplish that mechanical clearance and coating internal resistance are even fully on every side, causes that to get angry the fireball that circle sends both little inhomogeneous again.

The purpose of this utility model is to provide that a kind of volume is little, cost is low, efficient is high and continuous type boiler high energy two-stage ignition device.

Boiler high energy two-stage ignition device of the present utility model comprises igniter, stube cable, conducting rod and semiconductor discharge plug.Igniter wherein is made of shell and the circuit that is arranged within this shell.When the elementary access power frequency supply of the transformer B in the circuit, by boosting of this transformer, pass through high-voltage diode D rectification again, to storage capacitor C charging, at last through gas-discharge tube F discharge.Export semiconductor discharge plug to by conducting rod.Its design feature is the secondary current-limiting resistance that saved at transformer, and has installed magnetic diverter between its primary and secondary coil additional; The ignition circle of semiconductor discharge plug is equal to or greater than three circles.

Because the secondary current-limiting resistance that saved of the transformer of boiler high energy two-stage ignition device of the present utility model, and between the primary and secondary coil of transformer, adorned magnetic diverter, when short circuit appears in transformer secondary output, magnetic flux forms the loop through magnetic diverter, voltage on the secondary coil is reduced rapidly, reduced power consumption, used the transformer of 200W the same with the effect of the transformer that uses 400W, but also continuous operation.In addition, because the ignition circle of semiconductor discharge plug increases to three circles or more than three circles, make the ignition fireball bigger more even.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a boiler high energy two-stage ignition device schematic diagram;

Fig. 2 is a boiler high energy two-stage ignition device circuit schematic diagram;

Fig. 3 is the E shape appendiron core transformer schematic diagram that has magnetic diverter;

Fig. 4 is the C shape appendiron core transformer schematic diagram that has magnetic diverter;

Fig. 5 is the ignition circle schematic diagram of semiconductor discharge plug.

With reference to Fig. 1, Fig. 2, boiler high energy two-stage ignition device of the present utility model comprises igniter 1, stube cable 2, conducting rod 3 and semiconductor discharge plug 4, and igniter 1 mainly comprises shell and circuit two parts.Wherein the primary of circuit connects power frequency supply.Power-frequency voltage boosts through transformer B's, again through being connected on its secondary kenetron D rectification, to storage capacitor C charging, through gas-discharge tube F discharge, exports semiconductor discharge plug 4 to by conducting rod 3 at last.Transformer input at circuit is serially connected with fuse S.Output also is connected to inductance L, so that the burr on the filtering pulse current prolongs the discharge tube spark life-span.R1 can be capacitor C when igniter was shut down provides a discharge path.And with sparking plug parallel resistor R2 be the bleeder resistance of discharge tube, be beneficial to discharge tube and stably discharge.With reference to Fig. 3, Fig. 4, between the primary and secondary coil of transformer, add magnetic diverter, this magnetic diverter can be a silicon sheet core, also soft magnetic materials.Feasible seal makes the transformer secondary output short circuit, and magnetic flux forms the loop through magnetic diverter, and the voltage on the secondary coil is reduced rapidly, reduces power consumption, thereby makes the igniter can continuous operation.With reference to Fig. 5, the ignition circle (4-1) of semiconductor discharge plug 4 increased to three circles or more than three circles, can make fireball that sparking plug sends not only greatly but also even.

Claims

1. boiler high energy two-stage ignition device, comprise igniter (1), stube cable (2), conducting rod (3) and semiconductor discharge plug (4), igniter wherein (1) is made up of shell and circuit again, when the elementary access power frequency supply of transformer B in the circuit, by boosting of this transformer B, pass through high-voltage diode D rectification again, charge to storage capacitor C, at last through gas-discharge tube F discharge, export on the semiconductor discharge plug (4) by conducting rod (3), it is characterized in that described transformer B at the beginning of, add magnetic diverter (5) between the secondary coil, the ignition circle (4-1) of semiconductor discharge plug (4) is three circles.

2. boiler high energy two-stage ignition device according to claim 1, the ignition circle that it is characterized in that described semiconductor discharge plug (4) are more than three circles.