CN2644911Y

CN2644911Y - Coal gas remote ignition device for heat accumulation radiant tube combustion machine

Info

Publication number: CN2644911Y
Application number: CN 03255106
Authority: CN
Inventors: 赵升智; 张继领
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-13
Filing date: 2003-08-13
Publication date: 2004-09-29
Anticipated expiration: 2013-08-13

Abstract

The utility model discloses a thermal storage type radiant tube burning machine using remote ignition device, which belongs to the technology field of gas combustion. A remote ignition device is arranged on a place 0.5 meter away from an outlet of a burner, the ignition device is a sealed long tube shaped cavity body with an igniting channel pipe used for sending the kindling spark to the remote outlet of the burner arranged on the front end; a plurality of observation holes are arranged on the back end of the ignition device; a gas inlet and outlet, an igniting air pipe and a high pressure igniting head are arranged on the cavity body of the ignition device in turn along the advancing direction of the kindling spark. The igniting channel pipe has two setting modes: the gas pipe is used also as the igniting channel pipe, or, another channel pipe is arranged in the gas pipe as the igniting channel pipe. The utility model has the advantages of simple structure and design, longer service life, convenient replacement, no effect on the whole work when replaced, and also solves the reliability and security of ignition of internal burning in narrow and enclosed space.

Description

Heat accumulation type radiant tube combustor coal gas remote igniter

Technical field

The invention belongs to the gas-fired technical field, the heat accumulation type radiant tube combustor long distance ignition device in especially a kind of gas-fired technology.

Background technology

Traditional coal gas ignition method, igniter all are arranged near the burner outlet, by high-voltage spark or kindling material kept burning day and night igniting.Temperature is very high in this zone, and usually with the igniter scaling loss, the scaling loss of igniter is brought hidden danger to the safety of gas burner.Particularly for gas-radiant tubing combustor, because the particularity of its heating environment can not have naked light to occur, otherwise will cause heavy losses.Traditional radiant tube igniter also is arranged on the mixed export place apart from the coal gas and the combustion air of burner, by high-voltage spark or ever-burning flame igniting.Its defective is: one, because the interior temperature height of radiant tube, its igniter is usually by the thermal-flame scaling loss, two, because radiant tube is automatically regular alternative expression heat-accumulation combustion, when the failure of end points fire, the coal gas of the other end is in time exported according to program, cause the interior coal gas amount of radiant tube to increase, be easy to generate blast after the igniting, cause security incident; Three, in this type of combustor,, keep in repair very difficult in case igniter is damaged.

Summary of the invention

At the above-mentioned deficiency of prior art, the purpose of this utility model provides a kind of heat accumulation type radiant tube combustor coal gas remote igniter.It is arranged on the place away from burner outlet, can Yin Gaowen and scaling loss, and the fault of igniter does not have influence on the safety of combustor complete machine, and, easy to maintenance.The operation sequence of this igniter is controlled by microcomputer controller, and action accurately, and is reasonable in design, is a kind of safest igniter.

The purpose of this utility model is achieved in that described heat accumulation type radiant tube combustor coal gas remote igniter, be arranged on 0.5 meter place in addition away from the burner outlet place, igniter is the long cylindrical cavity body of a sealing, and its front end has the ignition channel pipe that kindling material is sent to the far-end burner outlet; The igniter rear end is provided with peep hole; Be disposed with gas inlet, igniting air hose, high pressure spot duration and degree of heating along the kindling material direction of advance on the igniter cavity.

Described ignition channel pipe has two kinds of set-up modes: the gas pipe that inner chamber is not provided with fin and heat storage is promptly held concurrently and is the ignition channel pipe; Inner chamber is provided with fin or/and a tube channel then is set in addition as the ignition channel pipe in the gas pipe of heat storage, after this pipe passes gas pipe interior fin or heat storage, the through burner of front end also is longer than the ejiction opening of burner slightly, its rear end is stretched in the igniter, and igniting air hose and high pressure spot duration and degree of heating are successively set in this ignition channel pipe.

The microcomputer controller (18) of the ignition operation of control igniter is arranged in the switch board.

The coal gas remote igniter that the utility model provides has been cancelled conventional igniter, can light mixed gas away from the burner high temperature place, has avoided the high temperature scaling loss of igniter and the hidden danger of bringing thus.This is a kind of brand-new trial, and the success of the method has brought the brand-new exploration world of a slice for the gas-fired technology, will bring power for the technological progress of this area.The project organization of coal gas remote igniter is simple, and ignition process safety is easy to operate, long service life; Because away from burner, it is convenient to change, and does not influence the overall work of combustor during replacing.The reliability and the security of when narrow and small enclosure space internal combustion, lighting a fire have also been solved simultaneously.

Description of drawings

Accompanying drawing 1 is a kind of example structure schematic diagram of this igniter;

Accompanying drawing 2 is the another kind of example structure schematic diagram of this igniter.

Structural representation when accompanying drawing 3 is this igniter and a kind of heat storage coal gas pipe radiator combustion engine coupling.

Accompanying drawing acceptance of the bid keep the score state as follows: 1---peep hole; 2---gas inlet; 3---igniter; 4---the igniting air hose; 5---the high-voltage spark head; 6---flange; 7---combustion-aid air pipe; 8---gas pipe; 9---the heat storage in air/exhaust gases passes; 10---the radiant tube straight-tube portion; 11---burner; 12---the ignition channel pipe; 13---the fin in the gas pipe is or/and heat storage; 14---burner outlet; 15---coal gas or coal gas/flue gas reversal valve; 16---air/flue gas reversal valve; 17---rotary cylinder; 18---microcomputer controller.

The specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.Accompanying

drawing

1,2 is the structural representation of two embodiment of this igniter.As shown in the figure, igniter 3 is arranged on the termination of two straight tubes 10 of radiant tube combustor, is in the place away from burner 11.Igniter 3 is a columnar cavity body, and its front end has the igniting tube channel, and this pipe can be held a concurrent post (shown in the accompanying drawing 1) by gas pipe 8, also can establish an ignition channel pipe 12 (shown in the accompanying drawing 2) in addition in gas pipe.Coal gas in the igniter, air, high pressure spot duration and degree of heating that order is set is consistent with the kindling material direct of travel.

Structural representation when accompanying drawing 3 is this igniter and a kind of heat storage coal gas pipe radiator combustion engine coupling.The lighting up procedure of 3 pairs of this coal gas remote igniters is summarized as follows in conjunction with the accompanying drawings:

A, at firing tip, open combustion-aid air pipe 7 and igniting 4 pairs of coal gas of air hose and air duct and purge, continue 10-30 second;

B, start high pressure spot duration and degree of heating 5 and make the generation electric spark, start gas inlet 2 immediately, coal gas start-up time, electric spark continued 6-8 second than the slow 1-2 of electric spark second, and the time that coal gas is supplied with burning is 30-60 second;

C, air/flue gas reversal valve 16 and coal gas reversal valve 15 are commutated, begin to prepare igniting at the other end of radiant tube;

D, when another firing tip, open combustion-aid air pipe 7 equally and igniting 4 pairs of coal gas of air hose and air duct purge, continue 10-30 second;

E, start high pressure spot duration and degree of heating 5 and make the generation electric spark, start gas inlet 2 immediately, coal gas start-up time, electric spark continued 6-8 second than the slow 1-2 of electric spark second, and the time that coal gas is supplied with burning is 30-60 second;

F, a work period finish, and next work period begins; Go round and begin again, carry out above operation, when showing that to testing result the discharge flue-gas temperature reaches design temperature (150-180 ℃), stop ignition operation.

Claims

1, a kind of heat accumulation type radiant tube combustor coal gas remote igniter, it is characterized in that: being arranged on away from the 0.5 meter igniter in addition in burner outlet place is the long cylindrical cavity body (3) of a sealing, and its front end has the ignition channel pipe that kindling material is sent to the far-end burner outlet; The igniter rear end is provided with peep hole (1); Be disposed with gas inlet (2), igniting air hose (4), high pressure spot duration and degree of heating (5) along the kindling material direction of advance on the igniter cavity.

2, igniter according to claim 1 is characterized in that: described ignition channel pipe has two kinds form is set: the gas pipe (8) that inner chamber is not provided with fin and heat storage is promptly held concurrently and is the ignition channel pipe; Inner chamber is provided with fin or/and be provided with a tube channel (12) in addition as the ignition channel pipe in the gas pipe (8) of heat storage (13), it passes the interior fin of gas pipe (8) or/and behind the heat storage (13), go directly burner (11) and be longer than the ejiction opening (14) of burner slightly of front end, its rear end is stretched in the igniter, and igniting air hose (4) and high pressure spot duration and degree of heating (5) are successively set in this ignition channel pipe (12).

3, igniter according to claim 1 and 2 is characterized in that: the microcomputer controller (18) of the ignition operation of control igniter is arranged in the switch board.