CN221666102U - Dual-output high-energy igniter - Google Patents

Abstract

The utility model discloses a dual-output high-energy igniter, which relates to the technical field of igniters, including: a step-up transformer B1 and a first rectifier circuit and a second rectifier circuit are connected in series respectively; in the first rectifier circuit, a discharge capacitor C1 is connected in series with a secondary coil L2, and the secondary coil L2 is connected in series with an ignition nozzle 2; in the first rectifier circuit, a discharge capacitor C1 is connected in series with a secondary coil L4, and the secondary coil L4 is connected in series with an ignition nozzle 1; a discharge tube K is provided between the circuits connecting the positive and negative electrodes of the secondary coils L2, L4 and the discharge capacitor C1; in the second rectifier circuit, the discharge capacitor C2 is connected in parallel with a pulse circuit, and the pulse circuit is connected with a trigger device; the primary coil L1 is connected with the primary coil L3, and then connected in parallel with the pulse circuit; a trigger device is provided between the circuits connecting the primary coil L1, L3 and both ends of the pulse circuit. The utility model can enable a high-energy igniter to realize dual-output ignition at a low cost and with a low failure rate.

Description

A dual-channel output high-energy igniter

Technical Field

The utility model relates to the technical field of igniters, in particular to a dual-path output high-energy igniter.

Background Art

An igniter refers to a device that provides enough energy to achieve combustion in an instant. As the name suggests, it is an igniter with higher and better performance. It is commonly used in power plants, petrochemical plants, coal chemical plants, and natural gas industries.

In the prior art, dual-output high-energy igniters are generally realized by controlling two high-voltage solid-state relays. The step-up transformer is connected to the two high-voltage solid-state relays through a circuit, one output end of the two high-voltage solid-state relays is connected to the high-voltage end of the discharge capacitor, and the other two output ends of the high-voltage solid-state relays are connected to two ignition nozzles, which share the negative poles. The pulse controller controls the high-voltage solid-state relays to work alternately to realize dual-output ignition.

However, when working, high-voltage solid-state relays are in an environment of high-voltage switching and high-current shock, and are easily broken down and damaged, causing failures, resulting in the igniter not being able to ignite normally, and the cost of high-voltage solid-state relays is relatively high.

Utility Model Content

The embodiment of the utility model provides a dual-output high-energy igniter, which can solve the problem in the prior art that the high-energy igniter cannot realize dual-output ignition at low cost and low failure rate.

The utility model embodiment provides a dual-output high-energy igniter, including: a step-up transformer B1, whose two input ends are connected to an AC voltage; the two output ends of the step-up transformer B1 are connected in series with a first rectifier circuit and a second rectifier circuit, and the first rectifier circuit is connected in parallel with the second rectifier circuit; the discharge capacitor C1 in the first rectifier circuit is connected in series with the secondary coil L2 of the pulse step-up transformer B2, and the secondary coil L2 is connected in series with the ignition nozzle 2; the discharge capacitor C1 in the first rectifier circuit is connected in series with the secondary coil L4 of the pulse step-up transformer B3, and the secondary coil L4 is connected in series with the ignition nozzle 2; The ignition nozzle 1 is connected in series; a discharge tube K is provided between the secondary coil L2, the secondary coil L4 and the circuit connected to the positive and negative poles of the discharge capacitor C1; the discharge capacitor C2 in the second rectifier circuit is connected in parallel with the pulse circuit, and the output end of the pulse circuit is connected to the trigger device for outputting a trigger signal; the primary coil L1 of the pulse boosting transformer B2 is connected to the primary coil L3 of the pulse boosting transformer B3, and then connected in parallel with the pulse circuit; the trigger device is provided between the primary coil L1, the primary coil L3 and the circuit connected to both ends of the pulse circuit.

Furthermore, the discharge tube K includes two connection modes: the first connection mode is that the discharge tube K is connected between the discharge capacitor C1 and the same-name terminal points of the secondary coils of the pulse boosting transformer B2 and the pulse boosting transformer B3; the second connection mode is that the two discharge tubes K are respectively connected in series to one side of the secondary coils of the pulse boosting transformer B2 and the pulse boosting transformer B3, and then respectively connected to the ignition nozzle 1 and the ignition nozzle 2 through the circuit.

Furthermore, the first rectifier circuit also includes: a diode D1, whose positive terminal is connected to the positive output terminal of the boost transformer B1 for rectification; a resistor R1, one end of which is connected to the negative terminal of the diode D1, and the other end of which is connected to the discharge capacitor C1.

Furthermore, the second rectifier circuit also includes: a diode D2, whose positive terminal is connected to the positive output terminal of the boost transformer B1 for rectification; a resistor R2, one end of which is connected to the negative terminal of the diode D2, and the other end of which is connected to the discharge capacitor C2.

Furthermore, the rectification modes of the first rectification circuit and the second rectification circuit include any one of half-wave rectification, full-wave rectification, bridge rectification, and double voltage rectification.

Furthermore, the primary coil L1 and the primary coil L3 are connected in series or in parallel.

Furthermore, the trigger device specifically includes the following situations: when the trigger device is a single thyristor VS, it is connected in series with the circuit after the primary coil L1 and the primary coil L3 are connected; when the trigger device is two thyristors VS1 and VS2, and the primary coil L1 and the primary coil L3 are connected in parallel, the two trigger devices are respectively connected in series with the primary coil L1 and the primary coil L3.

Furthermore, the secondary coil L2 and the ignition nozzle 1, and the secondary coil L4 and the ignition nozzle 2 are connected respectively through high-voltage ignition cables; the ground wire of the high-voltage ignition cable is the negative terminal of the discharge capacitor C1, and is shared by the ignition nozzle 1 and the ignition nozzle 2.

The embodiment of the utility model provides a dual-output high-energy igniter, which has the following beneficial effects compared with the prior art:

The output end of the boost transformer of the dual-output high-energy igniter of the utility model is connected in parallel with the first rectifier circuit and the second rectifier circuit. Among them, the positive electrode of the discharge capacitor in the first rectifier circuit is connected to the discharge tube, and the other end of the discharge tube is connected in parallel to the same-named ends of the secondary coils of two pulse boost transformers, and the other two ends of the secondary coils of the two pulse boost transformers are respectively connected to the two ignition nozzles through high-voltage ignition cables. The negative electrode of the discharge capacitor of the high-energy igniter is shared, so that the problem of dual-output of the high-energy igniter can be solved.

Next, another discharge capacitor in the second rectifier circuit is connected in parallel with the pulse circuit, and the output end of the pulse circuit is connected to the trigger device. The trigger device can send a signal to control the primary coils of the two pulse boost transformers, thereby achieving the effect of controlling the secondary coils.

Compared with high-cost high-voltage solid-state relays, the combination of pulse boost transformer and pulse circuit has the ultimate effect of not only reducing production costs, but also long service life and low failure rate.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a circuit diagram of a dual-output high-energy igniter provided by an embodiment of the utility model;

FIG2 is a primary coil series circuit diagram of a dual-output high-energy igniter provided by an embodiment of the utility model;

FIG3 is a parallel circuit diagram of a primary coil of a dual-output high-energy igniter provided in an embodiment of the utility model.

DETAILED DESCRIPTION

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

1 to 3, the embodiment of the utility model provides a dual-output high-energy igniter, which includes: an AC power source is stepped up by a step-up transformer B1 and then divided into two paths:

As shown in Figure 1, the first path charges the discharge capacitor C1 through the first rectifier circuit containing a diode D1 and a resistor R1. The secondary coil L2 of the pulse boost transformer B2 and the secondary coil L4 of the pulse boost transformer B3 are connected in parallel with the same-name ends, and then connected to the positive end of the discharge capacitor C1 through a discharge tube. The other end of the secondary coil of the pulse boost transformer B2 is connected to the ignition nozzle 2 through a high-voltage cable, and the other end of the secondary coil of the pulse boost transformer B3 is also connected to the ignition nozzle 1 through a high-voltage cable. The ground wire of the ignition cable is the negative electrode of the discharge capacitor, which is shared by the two ignition nozzles.

Next, the second rectifier circuit containing a diode D2 and a resistor R2 charges the pulse circuit discharge capacitor C2 and also provides power for the pulse circuit. The pulse circuit generates two trigger signals that continuously and alternately output high levels (that is, when the trigger signal 1 is high, the trigger signal 2 is low; when the trigger signal 1 is low, the trigger signal 2 is high). When the trigger signal 1 is high, the trigger signal 2 is low. At this time, the thyristor VS1 is triggered and quickly turns on, and the voltage on the capacitor C2 is quickly discharged through the primary coil L1 of the pulse boost transformer B2. A high-voltage pulse is instantly induced in the secondary coil L2 of the pulse boost transformer B2. After this high-voltage pulse breaks through the discharge tube K, it is superimposed on the voltage on the discharge capacitor C1, and is quickly discharged at the ignition nozzle 2 through the high-voltage cable to generate an ignition spark. By the same token, when the thyristor VS2 is triggered, an ignition spark is also generated at the ignition nozzle 1.

Secondly, there is no requirement for the position of the discharge tube connection circuit. The discharge tube can be connected between the high-energy igniter discharge capacitor and the same-name terminal points of the secondary coils of the two pulse boost transformers B2 and B3, or two discharge tubes can be connected in series to both sides of the secondary coils of the pulse boost transformers B2 and B3, and then connected to the ignition nozzle by the ignition cable.

In addition, there is no requirement for the rectification circuit mode after the high-voltage output of the high-energy igniter transformer. Half-wave rectification, full-wave rectification, bridge rectification, and double-voltage rectification can be used.

In addition, there is no requirement for the connection mode of the primary coils L1 and L3 of the pulse boost transformers B2 and B3. They can be used in parallel or in series, as shown in Figures 2 and 3.

Then, the pulse circuit power supply method and the pulse circuit pulse generation method are not required. When the primary coil L1 and the primary coil L3 in the primary module are connected in series, the trigger device at the output end of the pulse circuit can use a single thyristor VS in series with the primary module. When the primary coil L1 and the primary coil L3 in the primary module are connected in parallel, in addition to the connection method of Figure 1, the trigger device at the output end of the pulse circuit can use a single thyristor VS in series with the primary module. As shown in Figures 2 and 3.

A specific embodiment is as follows:

The high-energy igniter increases the voltage through a step-up transformer, and charges the energy storage capacitor after rectification. When the charging voltage exceeds the breakdown voltage of the discharge tube, the voltage on the energy storage device discharges the ignition nozzle, causing the nozzle to produce a strong spark, which serves as the fire source for ignition.

When the dual-channel output high-energy igniter of the device is used, the power supply is firstly turned on, and the pulse circuit outputs a high-level trigger signal, so that the trigger device is triggered and quickly turned on.

Next, the voltage across the discharge capacitor C2 of the pulse circuit is rapidly discharged through the primary coils L1 and L3 of the pulse step-up transformers B2 and B3, and a high-voltage pulse is generated in the secondary coils L2 and L4 of the pulse step-up transformers B2 and B3. After the high-voltage pulse breaks through the discharge tube K, it is superimposed on the voltage on the discharge capacitor C1, and then rapidly discharged at the ignition nozzle 1 and the ignition nozzle 2 through the high-voltage ignition cable, and finally a discharge spark is generated, achieving the effect of dual-channel output.

The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims (8)

1. A dual output high energy igniter, comprising:

the two input ends of the step-up transformer B1 are connected with alternating voltage;

The two output ends of the step-up transformer B1 are connected in series with a first rectifying circuit and a second rectifying circuit, and the first rectifying circuit is connected in parallel with the second rectifying circuit;

The discharging capacitor C1 in the first rectifying circuit is connected with the secondary coil L2 of the pulse boosting transformer B2 in series, and the secondary coil L2 is connected with the ignition electric nozzle 2 in series; the discharging capacitor C1 in the first rectifying circuit is connected with the secondary coil L4 of the pulse boosting transformer B3 in series, and the secondary coil L4 is connected with the ignition electric nozzle 1 in series;

A discharge tube K is arranged between the secondary coil L2 and a circuit of the secondary coil L4 connected with the positive electrode and the negative electrode of the discharge capacitor C1;

The discharging capacitor C2 in the second rectifying circuit is connected with the pulse circuit in parallel, and the output end of the pulse circuit is connected with the trigger device and is used for outputting a trigger signal;

The primary coil L1 of the pulse boosting transformer B2 is connected with the primary coil L3 of the pulse boosting transformer B3 and then connected with the pulse circuit in parallel;

The trigger device is arranged between the primary coil L1 and the circuit connected with the two ends of the pulse circuit and between the primary coil L3 and the circuit connected with the two ends of the pulse circuit.

2. A dual output high energy igniter as defined in claim 1 wherein said discharge tube K comprises two means of connection:

The first connection mode is that the discharge tube K is connected between the discharge capacitor C1 and the secondary coil homonymous terminal points of the pulse step-up transformer B2 and the pulse step-up transformer B3;

The second connection mode is that the two discharge tubes K are respectively connected in series to one side of the secondary coil of the pulse booster transformer B2 and one side of the secondary coil of the pulse booster transformer B3, and are respectively connected to the ignition electrode nozzle 1 and the ignition electrode nozzle 2 through circuits.

3. The dual output high energy igniter of claim 1 wherein said first rectifier circuit further comprises:

The positive end of the diode D1 is connected with the positive output end of the step-up transformer B1 and used for rectifying;

And one end of the resistor R1 is connected with the negative electrode end of the diode D1, and the other end of the resistor R1 is connected with the discharge capacitor C1.

4. The dual output high energy igniter of claim 1 wherein said second rectifier circuit further comprises:

The positive end of the diode D2 is connected with the positive output end of the step-up transformer B1 and used for rectifying;

And one end of the resistor R2 is connected with the negative electrode end of the diode D2, and the other end of the resistor R2 is connected with the discharge capacitor C2.

5. The dual output high energy igniter of claim 1 wherein the rectifying means of the first rectifying circuit and the second rectifying circuit comprises: half-wave rectification, full-wave rectification, bridge rectification, 2-fold voltage rectification.

6. The dual output high energy igniter of claim 1 wherein said primary coil L1 is connected to said primary coil L3 in a manner comprising: either in series or in parallel.

7. A dual output high energy igniter as defined in claim 1 or 4 wherein said trigger means comprises:

When the trigger device is a single thyristor VS, the trigger device is connected in series with a circuit formed by connecting the primary coil L1 and the primary coil L3;

When the triggering devices are two thyristors VS1 and VS2 and the connection mode of the primary coil L1 and the primary coil L3 is parallel, the two triggering devices are respectively connected in series with the primary coil L1 and the primary coil L3.

8. The dual output high energy igniter of claim 1, wherein said secondary coil L2 and said ignition tip 1 are connected by high voltage ignition cables respectively between said secondary coil L4 and said ignition tip 2; the ground wire of the high-voltage ignition cable is the negative electrode end of the discharge capacitor C1, and is shared by the ignition electrode nozzle 1 and the ignition electrode nozzle 2.