CN2747478Y

CN2747478Y - laser ignitor

Info

Publication number: CN2747478Y
Application number: CN 200420036681
Authority: CN
Inventors: 王金祥
Original assignee: SHANGHAI TONGJI HIGH-TECH DEVELOPMENT Co Ltd
Current assignee: SHANGHAI TONGJI HIGH-TECH DEVELOPMENT Co Ltd
Priority date: 2004-06-23
Filing date: 2004-06-23
Publication date: 2005-12-21
Anticipated expiration: 2014-06-23

Abstract

The utility model discloses a laser ignitor, comprising a laser power supply and a laser generator, and also comprising a laser ignition mouth. The laser ignition mouth is arranged at a device that needs to be ignited, and extends into the device to contact with the combustible mixed gas. The laser ejection end of the laser generator points to the laser ignition mouth, and the central line of the emissive laser beam and the central line of the laser ignition mouth are on the same straight line. The laser ignitor of the utility model utilizes the laser energy to ignite, and solves the problems that the electric ignition type electrode is corroded, damaged and charred at high temperatures, a high voltage conducting bar and a high voltage cable leak electricity and are easily deformed, broken and corroded at high temperatures, etc. The laser ignition gun improves the reliability of the ignition and the lifespan of the ignition system, has simple ignition process and simple structure, is favorable for mount and maintenance, and is suitable for ignition flame for devices of boilers, burners, industrial boilers, torches, etc.

Description

Laser Igniter

Technical field

The utility model relates to a kind of igniter, particularly a kind of Laser Igniter that utilizes laser as ignition energy.

Background technology

All need igniter to come reliable ignition flame in many occasions such as boiler, burner, industrial furnace, torch, coal gas diffusion systems.Existing igniter mainly is electric ignition, utilizes modes such as high-tension electricity igniting, arc ignition and electricity are red-hot to come pilot flame.The electric ignition part that mainly contains in the igniter constitutes with other slave parts, electric ignition partly includes electric igniting element and electrode, and wherein electric igniting element produces electric spark by electrode, and burning mixture ignites, form stable flame, thereby finish the igniting task.But the electrode of above-mentioned igniter partly is among the high temperature of ignition flame, tie carbon, corrosion and damage easily, high pressure conducting rod and high-tension cable may leak electricity, easy deformation fracture, corrosion under the high temperature, thereby may cause loss of ignition, even causing the ignition system cisco unity malfunction, there is weak point in existing this series products to some extent at aspects such as IGNITION CONTROL, installation, reliability, maintainability and life-spans simultaneously.

Summary of the invention

Technical problem to be solved by this invention is the present situation at prior art, and a kind of laser-ignition unit that utilizes laser as ignition energy is provided, and the reliability height is applied widely.

The technical scheme that its technical problem that solves the utility model adopts is: this Laser Igniter comprises laser power supply, laser generator and laser point nozzles; Described laser power supply is the laser generator power supply; Described laser point nozzles are positioned on the equipment to be lighted a fire, and stretch into contact burning mixture in this equipment; The laser ejecting end of described laser generator is towards described laser point nozzles, and the laser beam center line of generation and the center line of laser point nozzles point-blank ignite by these laser point nozzles and to treat burning mixture in the ignition installation.

Described laser point nozzles comprise beam condensing unit, ignitor electrode and conduit, wherein ignitor electrode is installed in the head end of conduit, the tail end of conduit is towards laser generator, beam condensing unit is installed in the middle part of conduit, and and the axial distance between the ignitor electrode is the focal length of beam condensing unit, and laser generator emitted laser bundle is concentrated on ignitor electrode behind beam condensing unit.

The conduit of described laser point nozzles can be connected to form by last downcomer, and ignitor electrode is installed in the head end of upper conduit, and beam condensing unit is installed between upper conduit and the downcomer, and the tail end of downcomer is towards laser generator.

Comprise a pertusate protection piece of central authorities in the described laser point nozzles; this protection piece is installed in the head end of upper conduit; described ignitor electrode is installed on the central hole of this protection piece, thereby is fixed on the upper conduit, and this protection piece can be high temperature resistance and high strength pottery protection piece.

Described laser point nozzles also comprise, are placed on the cover plate of described downcomer tail end, and this cover plate can pass through for laser beam; Be installed in the high temperature resistant pad between upper conduit and the beam condensing unit; And will go up the connector that downcomer links together.

Described laser generator can be installed with the way of contact or noncontact mode with the laser point nozzles.

The beneficial effects of the utility model are, utilize the laser energy igniting, the high temperature bottom electrode corrosion and damage, the knot carbon that exist under the electric ignition mode have been solved, problems such as easy deformation fracture under high pressure conducting rod and high-tension cable electric leakage, the high temperature, corrosion, improved the reliability of igniting and the life-span of ignition system, its ignition process process is simple, helps using automatic control technology to realize automatic igniting, whole device simple in structure helps installation and maintenance.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a laser ignition mouth structure schematic diagram of the present utility model.

The specific embodiment

Referring to shown in Figure 1, the head end of laser point nozzles 3 is installed on the equipment to be lighted a fire 41, and stretches into contact burning mixture 4 in this equipment, and the tail end of laser point nozzles 3 is towards laser generator 2; The laser ejecting end of laser generator 2 is towards described laser point nozzles, and the laser beam center line of its generation and the center line of laser point nozzles are point-blank; Laser power supply 1 makes its emission high energy laser beam to laser generator 2 power supply, ignites by laser point nozzles 3 and treats burning mixture 4 in the ignition installation 41; Described laser generator 2 can be installed on position away from described laser point nozzles 3 in the noncontact mode, also can install with the way of contact with laser point nozzles 3.

Referring to shown in Figure 2, laser point nozzles 3 are combined by ignitor electrode 5, protection piece 6, upper conduit 7, high temperature resistant pad 8, beam condensing unit 9, downcomer 10 and the coaxial successively installation of cover plate 11.The central part of protection piece 6 has a hole vertically, and ignitor electrode 5 is installed in this hole; And the front end central hole place of this protection piece forms a fritter projection, and described ignitor electrode 5 just is among the hole of this high spot.Protection piece 6 is installed in the head end of upper conduit 7, and bossing toward the outer side.The other end of described upper conduit 7 is connected with downcomer 10 through high temperature resistant pad 8, beam condensing unit 9 successively, and ignitor electrode 5 equates with the focal length of beam condensing unit with the axial distance of beam condensing unit 9.Described cover plate is covered in the tail end of downcomer 10, and there is a hole in its central authorities, also can be the good material of light transmission, passes through for laser beam.Last downcomer connects by connectors such as bolt and nuts.The central axial line of beam condensing unit 9 and ignitor electrode 5 are point-blank guaranteed to converge at ignitor electrode 5 by the laser beam of cover plate 11 behind beam condensing unit 9 optically focused.

Above-mentioned protection piece 6 can also can be other materials for high temperature resistance and high strength pottery protection piece.Above-mentioned upper conduit 7 can be made cylindrical shape, also can make taper shape, or head dwindles the cylindrical shape that attenuates.Above-mentioned ignitor electrode 5 can be high temperature resistant ignitor electrode; Can install through protection piece 5, also can directly be fixed on the upper conduit 7, above-mentioned beam condensing unit 9 can be condenser.

Details are as follows for the course of work of the present utility model.When receiving the request of burning torch, laser power supply 1 work is powered at laser generator 2, laser generator 2 gives off laser beam, behind beam condensing unit 9 optically focused in the laser point nozzles 5, and directive ignitor electrode 5, make on the ignitor electrode 5 in the instantaneous high density energy of gathering, light burning mixture 4.Confirm by checkout gear that then disconnect Laser Power Devices 1, ignition process finishes.

Claims

1. Laser Igniter, comprise laser power supply and laser generator, described laser power supply is the laser generator power supply, it is characterized in that: described Laser Igniter also comprises the laser point nozzles of the burning mixture that is used to ignite, these laser point nozzles are positioned on the equipment to be lighted a fire, and stretch into and contact with burning mixture in this equipment; The laser ejecting end of described laser generator is towards the laser point nozzles, and the center line of the center line of emitted laser bundle and laser point nozzles point-blank.

2. Laser Igniter according to claim 1, it is characterized in that: described laser point nozzles comprise beam condensing unit, ignitor electrode and conduit, described ignitor electrode is installed in the head end of conduit, the tail end of conduit is towards laser generator, described beam condensing unit is installed in the middle part of conduit, and and the axial distance between the described ignitor electrode is the focal length of beam condensing unit, and described laser generator emitted laser bundle is concentrated on ignitor electrode behind beam condensing unit.

3. Laser Igniter according to claim 2, it is characterized in that: the conduit of described laser point nozzles is connected to form by upper conduit and downcomer, described ignitor electrode is installed in the head end of upper conduit, described beam condensing unit is installed between upper conduit and the downcomer, and the tail end of downcomer is towards laser generator.

4. Laser Igniter according to claim 3 is characterized in that: comprise a pertusate protection piece of central authorities in the described laser point nozzles, this protection piece is installed in the head end of upper conduit, and described ignitor electrode is installed on the central hole of this protection piece.

5. Laser Igniter according to claim 4 is characterized in that: described protection piece is a high temperature resistance and high strength pottery protection piece.

6. according to the described Laser Igniter of arbitrary claim in the claim 3 to 5, it is characterized in that: described laser point nozzles comprise the cover plate that Gong the laser beam that is placed on described downcomer tail end passes through.

7. according to the described Laser Igniter of arbitrary claim in the claim 3 to 5, it is characterized in that: described laser point nozzles comprise the high temperature resistant pad that is installed between upper conduit and the beam condensing unit.

8. according to the described Laser Igniter of arbitrary claim in the claim 3 to 5, it is characterized in that: described laser point nozzles comprise the connector that upper conduit and downcomer are linked together.