JP2786525B2 - Flame control ignition system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flame control type ignition device applied to a boiler and a heating furnace.

[Conventional technology]

The conventional torch type or igniter, which is called an igniter, is different from a normal burner in that a torch air passage 12 and a torch air passage 12 are disposed on the side of the load main burner 15 as shown in FIGS. An ignition torch horn 1 provided in the air passage 12 and located in the vicinity of each load main burner 15, and a burner 2a, a detection electrode 4 and a loading electrode 5 provided inside the ignition torch horn 1, respectively. The burner 2a is connected to a fuel source 10 via a fuel introduction pipe 7 provided with a control valve 9, and the torch air path 12 is connected to a ventilation fan 13 for an ignition torch through an air path provided with a wind pressure control device 14.
Was connected.

In the above, the torch air passage 12 has a wind pressure adjusting device 14
The combustion torch ventilator 13 feeds the combustion air 6 while controlling the flow rate by means of.

The fuel 8 is supplied from the fuel source 10 to the burner 2a while adjusting the flow rate by the control valve 9. The fuel ejected from the burner 2a is ignited by an ignition electrode 5 which is supplied with current by an ignition conductor 5b and generates a spark. The detection flame 3a generated by the ignited burner 2a is detected by the detection electrode 4, and its output signal is transmitted by the detection conductor 4b, and the control valve 9 and the air volume control device 14 control the flow rates of the fuel 8 and the air 6. And the flame holding of the burner 2a is performed.

The adjustment of the flow rates of the fuel and the air for the ignition and the flame holding is performed collectively, and the adjustment is not performed for each individual ignition device.

[Problems to be solved by the invention]

In the conventional apparatus, as described above, there is no apparatus for individually adjusting the ignition device to the best flame, and the fuel and the air are supplied collectively to a large number of torches branched from the same fuel source and the air source. As a result, imbalance occurs between the torches, and some parts may not be able to satisfy ignition flame holding.In extreme cases, ignition and flame holding of the load main burner are not limited. Sometimes, the torch itself could not fire.

Recently, automation of operation has been introduced in boilers, etc., and operation of the main burner has also been variously automated.However, if ignition and flame holding of the ignition torch are uncertain, smooth automatic operation cannot be performed any more. In addition, there is a possibility that a very dangerous condition such as generation of a flame by backfire may occur.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to more reliably perform ignition and flame holding of the torch itself and to reliably ignite a main load burner.

[Means for solving the problem]

The flame control type ignition device according to the present invention is provided with a plurality of main flames each of which is provided in accordance with the number of load main burners, each of which generates ignition energy and a detection flame which indicates that the main flame is ignited reliably. In the main flame torch and the detection flame torch provided in the ignition torch arranged in the torch airway, one control valve and the other are connected to the respective torches and adjust the respective fuel supply amounts. It is characterized by comprising a control valve, and a control umbrella provided in the torch air passage and separated from and connected to an air inlet of the ignition torch horn to control an air supply amount.

[Action]

In the above, the flow rate of the fuel supplied to the main flame torch is adjusted by one of the control valves so that the ignition energy to the load main burner is optimized.

The flow rate of the fuel supplied to the detection flame torch is adjusted by the other control valve so that the torch maintains an optimum detection flame.

Further, the air supplied into the ignition torch horn is moved by the adjusting umbrella to and away from the air inlet of the ignition torch horn, the air supply amount is adjusted, and the main flame and the detection flame are maintained in an appropriate combustion state.

As described above, since each ignition device can independently adjust the supply amounts of the main flame fuel, the detected flame fuel, and the combustion air, it is possible to ensure the best combustion state, and to prevent occurrence of a dangerous state. Prevention becomes possible.

〔Example〕

 One embodiment of the present invention is shown in FIGS.

The present embodiment shown in FIG. 1 to FIG.
The ignition torch horn 1 provided in the horn 1, the main flame torch 2 provided in the horn 1, the detection electrode 4, the ignition electrode 5, and the main flame torch 2 connected to the ignition torch horn 1 of the torch airway 12 A main flame gas introduction pipe 22a penetrating a mounting plate 30 provided on the opposite side, a detection electrode protection pipe 4a wrapping the detection lead wire 4b connected to the detection electrode 4 and penetrating the mounting plate 30, and the ignition In an ignition device provided with an ignition electrode protection tube 5a which wraps an ignition conductor 5b to which the electrode 5 is connected and penetrates the mounting plate 30, the torch 3 for detecting flame and the torch 3 provided in the ignition torch horn 1 are connected. Gas inlet pipe 22b for the detection flame that passes through the mounting plate 30
Gas flow control valves 21a and 21b provided between the detection flame gas introduction pipe 22b and the fuel introduction pipe 7 to which the main flame gas introduction pipe 22a is connected, and are provided in the torch air passage 12 respectively. The combustion air control umbrella 23 slidably penetrates the main flame gas introduction pipe 22a, the detection flame gas introduction pipe 22b, the detection electrode protection pipe 4a, and the ignition electrode protection pipe 5a. Air adjusting handle provided at the other end of the adjusting shaft 26 through which the mounting plate 25 is connected at one end and penetrates the mounting plate 30
It has 24.

In the above, the fuel 20a supplied to the main flame torch 2
By operating the gas flow control valve 21a, the flow rate is adjusted so that the ignition energy to the load main burner is optimized.

The flow rate of the fuel 20b supplied to the detection flame torch 3 is adjusted by operating the gas flow rate control valve 21b so that the detection flame torch 3 holds the optimum detection flame.

The amount of air supplied into the ignition torch horn 1 is adjusted by operating the air adjustment handle 24 so that the combustion air adjustment umbrella 23 is moved closer to or away from the air inlet of the ignition torch horn 1. The main flame and the detection flame are kept in an appropriate combustion state.

The gas flow control valves 21a and 21b and the combustion air control umbrella 23 are
A control device for inputting a flame detection signal from the detection electrode can be provided to perform the operation automatically, or a manual operation may be used.

As described above, since each ignition device can independently adjust the supply amounts of the main flame fuel, the detected flame fuel, and the combustion air, it is possible to ensure the best combustion state, and it is possible to secure a dangerous state. The occurrence can be prevented.

(Effect of the Invention) The flame control type ignition device of the present invention is provided with a gas flow rate control valve in each of the main flame torch and the detection flame torch, and by providing an adjustment umbrella that is separated from and connected to the air inlet of the ignition torch horn. Each igniter can independently adjust the supply of the main flame fuel, the detected flame fuel, and the combustion air, ensuring the best combustion conditions and preventing the occurrence of dangerous conditions. Becomes

[Brief description of the drawings]

1 is a side sectional view of one embodiment of the present invention, FIG. 2 is a view taken along the line II-II of FIG. 1, FIG. 3 is a view taken along the line III-III of FIG. 1, and FIG. FIG. 5 is an explanatory diagram of an example of installation of a plurality of conventional ignition devices. DESCRIPTION OF SYMBOLS 1 ... Ignition torch horn, 2 ... Torch for main flame, 3 ... Torch for detection flame, 4 ... Detection electrode, 4a ... Detection electrode protection tube, 4b ... Detection lead wire, 5 ... Ignition electrode, 5a ... ... Ignition electrode protection tube, 5b ... Ignition lead wire, 6 ... Combustion air, 7 ... Fuel introduction tube, 8 ... Fuel, 12 ... Torch airway, 15 ... Load main burner, 20a ... Main fuel, 21a, 21b ... gas flow control valve, 22a, 22b ... gas introduction pipe, 23 ... combustion air control umbrella, 24 ... air control handle, 25 ... mounting plate, 26 ... control shaft, 30 ...... Mounting plate.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 60-181570 (JP, U) Japanese Utility Model 56-165259 (JP, U) Japanese Utility Model 55-153477 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) F23Q 9/00-9/06 F23Q 13/02

Claims (1)

(57) [Claims] In an ignition system, a plurality of main flames are provided in accordance with the number of load main burners, each of which generates a main flame for generating ignition energy and a detection flame for indicating that the main flame is ignited reliably. A main torch and a detection flame torch provided in an ignition torchphone arranged on the road, one control valve and the other control valve connected to the respective torches and controlling respective fuel supply amounts, and A flame-controllable ignition device comprising an adjusting umbrella provided in an air passage for a torch and connected to an air inlet of an ignition torch horn to adjust an air supply amount.