CN201387010Y

CN201387010Y - Air-blowing type oxy-hydrogen flame anti-backfire device

Info

Publication number: CN201387010Y
Application number: CN200920054931U
Authority: CN
Inventors: 陈远平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-13
Filing date: 2009-04-13
Publication date: 2010-01-20
Anticipated expiration: 2019-04-13

Abstract

The utility model provides an air-blowing type oxy-hydrogen flame anti-backfire device, aiming at solving the problems that the present oxy-hydrogen flame anti-backfire device cannot well block backfire oxy-hydrogen flame, leads potential safety hazards in using oxygen-hydrogen mixed gas as fuel gas, affects the popularization as well as application of the oxygen-hydrogen mixed gas as the fuel gas, has complicated structure and is troublesome for use. The important points of the technical scheme of the air-blowing type oxy-hydrogen flame anti-backfire device are as follows: the anti-backfire device has the characteristics that the anti-backfire device comprises a non-flammable gas source device, a one-way valve, a normally-open electromagnetic valve and a normally-closed electromagnetic valve, wherein the one-way valve, the normally-open electromagnetic valve and the non-flammable gas source device are connected in series into a non-flammable gas pressure loop, the non-flammable gas pressure loop is switched on a gas supply loop between an oxygen-hydrogen mixed gas generating device and a combustor, and the one-way valve and the normally-closed electromagnetic valve are connected in series on the gas supply loop between the switching-on node and the oxygen-hydrogen mixed gas generating device.

Description

A kind of air blowing type oxyhydrogen flame backfire controller

Technical field

The utility model relates to a kind of accessory or parts that use the burner that hydrogen and oxygen mixture makes fuel, and particularly a kind of oxyhydrogen flame that prevents blows back into the air blowing type backfire controller of gas source

Background technology

The hydrogen and oxygen mixture that water electrolysis is produced is used as fuel gas, the energy of, environmental protection cheap, characteristics such as efficient, energy-conservation as having, can replaced acetylene, traditional fuel gas such as propane, carbon three gas, liquefied gas, be the technological project of rising in recent years, in fields such as glassware production, safety glass production, Ceramic Production, welding industry, energy source of car and domestic gas extensive application arranged at present.The hydrogen and oxygen mixture generating means that produces hydrogen and oxygen mixture with water electrolysis generally also can produce hydrogen with water electrolysis easily, and hydrogen will need by comburant oxygen with for fuel gas the time, also be hydrogen and oxygen mixture before the burning.Because the burning velocity of oxyhydrogen flame is more a lot of soon than traditional fuel gas, that as easy as rolling off a log generation oxyhydrogen flame blows back into gas source and the tempering accident takes place, so use hydrogen and oxygen mixture must properly settle anti-backfire problem as fuel gas.

Present existing oxyhydrogen flame backfire controller has dry type and wet type two classes, the dry type backfire controller is just like the oxyhydrogen flame dry type backfire controller of No. the 93241030.8th, Chinese patent, be characterized in fire-stopping pipe, being provided with piston, piston rod, the place is provided with metal ball body at air inlet, promote piston, piston rod and spheroid in succession at the inner explosive force that produces of fire-stopping pipe when utilizing the oxyhydrogen flame tempering, allow spheroid with inlet close, flow backwards to prevent flame.The wet type backfire controller is just like the wet type backfire controller with double-deck water seal of No. the 200720049195.4th, Chinese patent, be characterized in being provided with the double-layer cavity of a ventilation at the hydrogen and oxygen mixture delivery outlet of hydrogen and oxygen mixture generating means, pour water in the chamber, hydrogen and oxygen mixture from water by output, when tempering takes place oxyhydrogen flame be water resistance every and do not enter gas source.Existing this two classes backfire controller can't finely stop the express tempering oxyhydrogen flame of burning velocity, makes hydrogen and oxygen mixture be used as fuel gas and has hidden danger, and this has influence on hydrogen and oxygen mixture applying as fuel gas; Also there is complex structure in the wet type backfire controller, uses the problem of trouble.

Summary of the invention

Exist and finely to stop the tempering oxyhydrogen flame, make hydrogen and oxygen mixture be used as fuel gas to have hidden danger, have influence on the defective of hydrogen and oxygen mixture in order to overcome existing oxyhydrogen flame backfire controller as the applying of fuel gas, complex structure, use trouble, the purpose of this utility model provides a kind of improved air blowing type oxyhydrogen flame backfire controller, can overcome the defective of prior art.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of air blowing type oxyhydrogen flame backfire controller, it is characterized in that: comprise non-combustible gas compressed air source unit, check valve, normally open solenoid valve and normally closed solenoid valve, wherein check valve, normally open solenoid valve and non-combustible gas compressed air source unit are concatenated into a non-combustible gas pressure circuit, access to the air feed loop between the burner, is connected in series check valve and normally closed solenoid valve at described access node at the hydrogen and oxygen mixture generating means to the air feed loop between the hydrogen and oxygen mixture generating means.

The non-combustible gas of technique scheme can be air, nitrogen, carbon dioxide etc.

The compressed air source unit of technique scheme can be a pressure cylinder, also can be a cover gas compressor device.

The burner of technique scheme can be stove, kiln, welding torch, cutting torch, engine cylinder etc.

The hydrogen and oxygen mixture generating means of technique scheme can be the device that directly produces hydrogen and oxygen mixture with water electrolysis, also can be directly to produce fuel with water electrolysis to be mixed into the device of comburant oxygen again with hydrogen, can also be directly to use hydrogen as fuel and be mixed into the device of comburant oxygen.

The magnetic valve of technique scheme can have manual operation function, moves interim operation when malfunctioning to deal with when electromagnetism.

Air blowing type oxyhydrogen flame backfire controller of the present utility model can be applied in a hydrogen and oxygen mixture generating means to the air feed loop of burner, also can be applied in hydrogen and oxygen mixture generating means more than two or two to the air feed loop of burner.When being applied to hydrogen and oxygen mixture generating means more than two or two to the air feed loop of burner the time, air blowing type oxyhydrogen flame backfire controller can adopt switch on magnetic or hand-operated valve of multidigit to insert in this air feed loop more than two or two more, reaches the diversity of fit system.

The utility model also can be used for the use occasion of traditional fuel gas such as acetylene, propane, carbon three gas, liquefied gas certainly, and this situation also should belong to equivalent technical solutions of the present utility model.

The beneficial effects of the utility model: owing to the air feed loop between the burner, insert one by check valve at the hydrogen and oxygen mixture generating means, the non-combustible gas pressure circuit that normally open solenoid valve and non-combustible gas compressed air source unit serial connection constitute, to the air feed loop between the hydrogen and oxygen mixture generating means, be connected in series check valve and normally closed solenoid valve at described access node again, when hydrogen and oxygen mixture generating means during to the burner air feed, normally closed solenoid valve is opened, normally open solenoid valve cuts out simultaneously, when the flame-out hydrogen and oxygen mixture generating means of burner stops air feed, normally closed solenoid valve is closed, normally open solenoid valve is opened simultaneously, the non-combustible gas compressed air source unit promptly provides the high speed non-combustible gas to burner, described access node to the remaining hydrogen oxygen gas mixture in the air feed loop between the burner is blown off, make oxyhydrogen flame that tempering phenomenon not take place, the reliability height of its backfire controller, hydrogen and oxygen mixture just obtains more satisfactory solution as the safety problem of fuel gas like this, can impel hydrogen and oxygen mixture to be used as being applicable of fuel gas; The utility model also has advantage simple in structure, easy to use; Another advantage of the present utility model is; when running into unexpected the power failure; normally closed solenoid valve is closed automatically; cut off the air feed loop of hydrogen and oxygen mixture generating means; normally open solenoid valve is opened automatically; allow non-combustible gas that described access node to the remaining hydrogen oxygen gas mixture in the air feed loop between the burner is blown off, play unexpected power failure safeguard protection effect.

The invention will be further described below in conjunction with drawings and Examples.

Description of drawings

Fig. 1 is the loop schematic diagram of an embodiment of the utility model.

Fig. 2 is that the utility model is applied in the loop schematic diagram of two hydrogen and oxygen mixture generating means to the air feed loop of burner.

Among the figure: 1, non-combustible gas compressed air source unit; 2 and 3, check valve; 4, normally open solenoid valve; 5, normally closed solenoid valve; 6, hydrogen and oxygen mixture generating means; 7, burner; 8, access node; 9, air compressor; 10, check valve; 11, gas tank; 12, Pressure gauge; 13, safety valve; 14, pressure switch; 15, hand-operated valve; 16, spark arrester; 17, air blowing type oxyhydrogen flame backfire controller; 18 and 19, the hydrogen and oxygen mixture generating means is to the air feed loop of burner; 20, four position four-way solenoid valves.

The specific embodiment

With reference to Fig. 1, this air blowing type oxyhydrogen flame backfire controller, it is characterized in that: comprise non-combustible gas compressed air source unit 1,

check valve

2 and 3, normally open solenoid valve 4 and normally closed solenoid valve 5, wherein check valve 2, normally open solenoid valve 4 and non-combustible gas compressed air source unit 1 are concatenated into a non-combustible gas pressure circuit, access to the air feed loop between the burner 7, is connected in series check valve 3 and normally closed solenoid valve 5 at described access node 8 at hydrogen and oxygen mixture generating means 6 to the air feed loop between the hydrogen and oxygen mixture generating means 6.In addition, non-combustible gas compressed air source unit 1 is a blowing plant, is is specifically connected and composed by air compressor 9, check valve 10, gas tank 11, Pressure gauge 12, safety valve 13, pressure switch 14 and hand-operated valve 15 correspondences; Burner 7 also is serially connected with a spark arrester 16 to the air feed loop between the access node 8, to strengthen the security of usefulness gas, spark arrester is a kind of general on the market off-the-shelf.

In the use, when hydrogen and oxygen mixture generating means 1 during to burner 7 air feed, normally closed solenoid valve 5 is opened, normally open solenoid valve 4 cuts out simultaneously, hydrogen and oxygen mixture is from 1 output of hydrogen and oxygen mixture generating means, arrive burner 7 through normally closed magnetic valve 5, check valve 3, spark arrester 16, but just ignition of burner 7; When burner need stop working, hydrogen and oxygen mixture generating means 1 stops to export hydrogen and oxygen mixture, normally closed solenoid valve 5 is closed simultaneously, normally open solenoid valve 4 is opened, the non-combustible gas of non-combustible gas compressed air source unit 1 output promptly arrives burner 7 through normally open solenoid valve 4, check valve 2, spark arrester 16, access node 8 to the remaining hydrogen oxygen gas mixture in the air feed loop between the burner 7 is blown off, make oxyhydrogen flame that tempering phenomenon not take place.

With reference to Fig. 2, this air blowing type oxyhydrogen flame backfire controller 17, structure is identical with the air blowing type oxyhydrogen flame backfire controller of Fig. 1, it is applied in two hydrogen and oxygen mixture generating means as shown in Figure 1 to the

air feed loop

18,19 of burner, air blowing type oxyhydrogen flame backfire controller 17 adopts one four position four-way solenoid valve 20 to insert the

air feed loop

18,19 of hydrogen and oxygen mixture generating means to burner respectively, has four kinds of fit systems with hydrogen and oxygen mixture generating means to the

air feed loop

18,19 of burner.

Claims

1, a kind of air blowing type oxyhydrogen flame backfire controller, it is characterized in that: comprise non-combustible gas compressed air source unit, check valve, normally open solenoid valve and normally closed solenoid valve, wherein check valve, normally open solenoid valve and non-combustible gas compressed air source unit are concatenated into a non-combustible gas pressure circuit, access to the air feed loop between the burner, is connected in series check valve and normally closed solenoid valve at described access node at the hydrogen and oxygen mixture generating means to the air feed loop between the hydrogen and oxygen mixture generating means.

2,, it is characterized in that described compressed air source unit is a pressure cylinder or a cover gas compressor device by the described air blowing type oxyhydrogen flame of claim 1 backfire controller.

3, by the described air blowing type oxyhydrogen flame of claim 2 backfire controller, it is characterized in that described blowing plant is connected and composed by air compressor, check valve, gas tank, Pressure gauge, safety valve, pressure switch and hand-operated valve correspondence.

4, by claim 1 or 2 described air blowing type oxyhydrogen flame backfire controllers, it is characterized in that described magnetic valve has manual operation function.

5,, it is characterized in that described air blowing type oxyhydrogen flame backfire controller is applied in one, the hydrogen and oxygen mixture generating means more than two or two to the air feed loop of burner by claim 1 or 2 described air blowing type oxyhydrogen flame backfire controllers.

6, by the described air blowing type oxyhydrogen flame of claim 5 backfire controller, it is characterized in that describedly being applied to hydrogen and oxygen mixture generating means more than two or two to the air feed loop of burner, air blowing type oxyhydrogen flame backfire controller adopts switch on magnetic or hand-operated valve of multidigit to insert in this air feed loop more than two or two more.

7,, it is characterized in that described burner also is serially connected with a spark arrester to the air feed loop between the described access node by claim 1 or 2 described air blowing type oxyhydrogen flame backfire controllers.