CN209820162U - Carbon baking furnace flameout-preventing nozzle - Google Patents
Carbon baking furnace flameout-preventing nozzle Download PDFInfo
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- CN209820162U CN209820162U CN201920386888.5U CN201920386888U CN209820162U CN 209820162 U CN209820162 U CN 209820162U CN 201920386888 U CN201920386888 U CN 201920386888U CN 209820162 U CN209820162 U CN 209820162U
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Abstract
The utility model discloses a carbon baking furnace flameout-proof nozzle, which comprises a nozzle body, wherein one end of the nozzle body is closed, the other end of the nozzle body is provided with a nozzle opening, and a fuel gas inner tube, a gas swirler and an ignition mechanism are sequentially arranged in the nozzle body along the flow direction of air flow; the anti-flameout metal net is arranged at the nozzle opening and consists of metal wires, and the diameter of each metal wire is smaller than 0.2 mm. The utility model discloses can prevent extinguishing of carbon element baker low temperature in-process nozzle, guarantee the stable burning of nozzle, prevent extravagant fuel gas, avoid causing the interior difference in temperature of stove to influence the baker effect to prevent the flame path explosion that arouses because of the fuel gathering.
Description
Technical Field
The utility model relates to a carbon production technical field especially relates to a carbon element baker prevents flame-out nozzle.
Background
In the production of carbon, a carbon kiln is required to be baked. The furnace body is heated, the water in the furnace body is gradually dried, the internal stress is eliminated, the adhesive force of slurry is increased, the strength of the furnace body is improved, and meanwhile, the furnace body is sintered at high temperature to enable the furnace body to reach the thermal state during normal production. The carbon kiln furnace baking is an important factor influencing the performance and the service life of the furnace, is a process which is long in period and difficult to control, and relates to a plurality of operation shifts and a plurality of personnel. When a furnace is dried, a nozzle with a single gas source is generally used for heating operation, fuel gas enters from the gas source of the nozzle, is mixed and combusted with air in the furnace, and heats a furnace body, but the problems of insufficient combustion, unstable combustion and easy flameout of the fuel gas commonly exist in the existing nozzle. Its leading cause lies in that the baker belongs to the moisture process of removing in earlier stage, moisture content is great in the flue gas that the baker produced, in addition the flame path air current is drawn by the draught fan and is moved high-speed flow, the fuel gas source that leads to nozzle department, the flow of air is unstable, thereby it is unstable to lead to its mixture ratio when the air in fuel gas and the stove that gets into from the nozzle gas source mixes the burning in nozzle department, can lead to flame-out for zero because of the instantaneous flow of fuel gas or air even, it is extravagant that the light person causes the gas, produce the difference in temperature in the stove, influence the furnace body and toast the effect, serious can cause the.
SUMMERY OF THE UTILITY MODEL
In order to solve the prior technical problem, the utility model provides a carbon baking oven flameout-proof nozzle.
In order to achieve the above object, the utility model provides a following technical scheme: a carbon baking furnace flameout-preventing nozzle comprises a nozzle body, wherein one end of the nozzle body is closed, the other end of the nozzle body is provided with a nozzle opening, and a fuel gas inner pipe, a gas swirler and an ignition mechanism are sequentially arranged in the nozzle body along the flowing direction of gas flow;
the fuel gas inner pipe is coaxially fixed at one closed end of the nozzle body, one end of the fuel gas inner pipe extends out of the outer side of the closed end of the nozzle body and is provided with a fuel gas inlet, the other end of the fuel gas inner pipe is closed, the outer peripheral surface of the fuel gas inner pipe is fixedly provided with a plurality of fuel gas dispersion pipes, the plurality of fuel gas dispersion pipes are uniformly fixed on the side wall of the fuel gas inner pipe in a radial shape and are communicated with the inside of the fuel gas inner pipe, and the fuel gas; a combustion-supporting gas cavity is formed between the fuel gas inner tube and the nozzle body, the combustion-supporting gas cavity is provided with a combustion-supporting gas inlet and a helical blade, the combustion-supporting gas inlet is arranged on the side wall of the end part of the nozzle body close to the fuel gas inlet, the helical blade is fixed on the outer wall of the fuel gas inner tube, and the helical blade divides the combustion-supporting gas cavity into a helical gas inlet channel;
the gas swirler comprises a central hub and a plurality of swirl blades, the central hub is connected with a connecting rod coaxial with the central hub, the connecting rod is fixed at one closed end of the fuel gas inner tube, the plurality of swirl blades are fixed on the outer peripheral surface of the central hub and are distributed circumferentially around the axis of the central hub, and the swirl blades are arranged in a deflection way relative to the axis of the central hub;
the ignition mechanism comprises a fixed block, a gravity block, a memory spring, an ignition contact and an ignition power supply, wherein the fixed block is fixed on the lower side wall of the nozzle body, the gravity block is arranged above the fixed block and is fixed on the upper side wall of the nozzle body through the memory spring, the fixed block and the gravity block are both made of conductive materials, one end of the ignition contact is fixed on the lower surface of the gravity block and is communicated with the gravity block, the other end of the ignition contact is in a taper shape, and the gravity block and the fixed block are respectively connected with a positive electrode and a negative electrode;
the anti-flameout metal net is arranged at the nozzle opening and consists of metal wires, and the diameter of each metal wire is smaller than 0.2 mm.
Preferably, more than two gas cyclones are axially arranged at intervals outside the connecting rod, and the deflection directions of the swirl blades of the two adjacent gas cyclones relative to the central hub are opposite.
Preferably, the metal wire is a heat-resistant metal material with high heat content.
Preferably, the closed end of the nozzle body has an internal diameter greater than the internal diameter of the nozzle body at the nozzle opening.
The fuel gas enters the fuel gas inner pipe from the fuel gas inlet and is dispersed into the nozzle body in a radial shape through the fuel gas inlet holes on the fuel gas dispersion pipe. And combustion-supporting gas enters the combustion-supporting gas cavity from the combustion-supporting gas inlet, rotates through the spiral gas inlet channel and is mixed with the combustion-supporting gas which is radially dispersed at the fuel gas dispersing pipe. When the mixed gas passes through the cyclone, the gas flow direction deflects and rotates, the flow field changes, the collision among gas molecules is strengthened, and the gas is quickly and uniformly mixed. The deflection directions of the swirl vanes of two adjacent cyclones are opposite, so that the change of a gas flow field is more intensified, the gas mixing time is further shortened, and the gas is mixed more uniformly. After the mist misce bene, through the ignition mechanism, this internal temperature of nozzle is low this moment, and memory spring takes place deformation and tensile under the action of gravity piece, and gravity piece and ignition contact are close to the fixed block gradually, and when ignition contact and fixed block were drawn close to certain distance, produced the electric field between gravity piece and the fixed block, the ignition contact discharges and ignites mist under the effect of electric field. After the mixed gas is ignited, the temperature in the nozzle is gradually raised, the memory spring is gradually restored to be original length, the ignition contact is driven to rise, and the electric field between the gravity block and the fixed block is weakened and is not enough to enable the ignition contact to discharge. When the nozzle is extinguished, the temperature in the nozzle is reduced, and the mixed gas can be re-ignited by the stretching of the memory spring.
When the nozzle normally works, flame at the nozzle opening heats the flameout-proof metal net, the flameout-proof metal net is composed of metal wires with the diameter smaller than 0.2mm and is positioned in an outer flame area, the metal wires are easy to burn, and due to the fact that the heat content of the metal wires is high, the metal wires are not easy to oxidize and cool, and the flameout-proof metal net accumulates a large amount of heat. When the nozzle is blown out by the wet flame duct air flow, the temperature of the flameout-proof metal net is still very high, and the accumulated heat is enough to ignite the mixed gas in the nozzle, so that the normal operation of the nozzle is ensured.
Because the fuel gas and the combustion-supporting gas enter the furnace after being uniformly mixed in the nozzle, the flow fluctuation of the fuel gas and the combustion-supporting gas is small, the mixing proportion is slightly influenced by the airflow in the flame path, the nozzle is stable in combustion and is not easy to extinguish. In addition, even if the nozzle is flamed out, the flameout-preventing metal net and the ignition mechanism can realize double ignition of the mixed gas and ignite the mixed gas in the nozzle in time.
The utility model discloses can prevent extinguishing of carbon element baker low temperature in-process nozzle, guarantee the stable burning of nozzle, prevent extravagant fuel gas, avoid causing the interior difference in temperature of stove to influence the baker effect to prevent the flame path explosion that arouses because of the fuel gathering.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the middle gas dispersion pipe of the present invention.
Fig. 3 is a right side view of a swirler in accordance with the present invention.
Fig. 4 is a right side view of another cyclone in the present invention.
Fig. 5 is an enlarged schematic view at a in fig. 1.
Fig. 6 is a circuit connection diagram of the ignition power source of the present invention.
In the figure: the nozzle comprises a nozzle body 1, a nozzle opening 2, a fuel gas inner pipe 3, a gas swirler 4, a fixed block 5, a fuel gas inlet 6, a fuel gas dispersion pipe 7, a fuel gas inlet 8, a combustion-supporting gas cavity 9, a combustion-supporting gas inlet 10, helical blades 11, a connecting rod 12, a central hub 13, swirl blades 14, a gravity block 15, a memory spring 16 and an ignition contact 17.
Detailed Description
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1-6, the carbon baking furnace flameout preventing nozzle comprises a nozzle body 1, wherein one end of the nozzle body 1 is closed, the other end of the nozzle body is provided with a nozzle opening 2, and a fuel gas inner pipe 3, a gas swirler 4 and an ignition mechanism are sequentially arranged in the nozzle body 1 along the airflow flowing direction.
The coaxial one end of fixing at nozzle body 1 confined of fuel gas inner tube 3, the one end of fuel gas inner tube 3 stretches out the 1 closed one end outside of nozzle body and is equipped with fuel gas import 6, and the other end of fuel gas inner tube 3 seals and fixes on its periphery and be equipped with 8 fuel gas dispersion pipes 7, and 8 fuel gas dispersion pipes 7 are radial evenly fixed on 3 lateral walls of fuel gas inner tube and all communicate with 3 inside of fuel gas inner tube, are equipped with fuel gas inlet 8 on the fuel gas dispersion pipe 7. A combustion-supporting gas cavity 9 is formed between the fuel gas inner pipe 3 and the nozzle body 1, and the combustion-supporting gas cavity 9 is provided with a combustion-supporting gas inlet 10 and a helical blade 11. The combustion-supporting gas inlet 10 is arranged on the side wall of the end part of the nozzle body 1 close to the fuel gas inlet 6, the helical blade 11 is fixed on the outer wall of the fuel gas inner pipe 3, and the combustion-supporting gas cavity 9 is divided into a helical gas inlet channel by the helical blade 11.
The gas swirler 4 comprises a central hub 13 and a plurality of swirl vanes 14, the central hub 13 is rotatably connected with a connecting rod 12 coaxial with the central hub 13, the connecting rod 12 is fixed at one closed end of the fuel gas inner pipe, the plurality of swirl vanes 14 are fixed on the outer circumferential surface of the central hub 13 and are circumferentially distributed around the axis of the central hub 13, and the swirl vanes 14 are arranged in a deflection way relative to the axis of the central hub 13.
The ignition mechanism comprises a fixed block 5, a gravity block 15, a memory spring 16, an ignition contact 17 and an ignition power supply. Fixed block 5 is fixed under the nozzle body 1 on the lateral wall, gravity piece 15 is located fixed block 5 top and is fixed on nozzle body 1 upper side wall through memory spring 16, and fixed block 5 and gravity piece 15 are electrically conductive material, ignition contact 17 one end is fixed at gravity piece 15 lower surface and is switched on with gravity piece 15, and the other end is the taper shape, gravity piece 15, fixed block 5 tie point thermal power source respectively just, the negative pole. The memory spring 16 is made by winding shape memory alloy wire, and can automatically recover the original length along with the temperature rise after being stretched by utilizing the memory effect of the shape memory alloy. In this embodiment, when the mixed gas in the nozzle is not ignited, the temperature in the nozzle is low, the memory spring 16 is stretched under the influence of the gravity block 15, the gravity block 15 and the ignition contact 17 gradually approach the fixed block 5, when the ignition contact 17 is drawn to a certain distance from the fixed block 5, an electric field is generated between the gravity block 15 and the fixed block 5, and the ignition contact 17 discharges under the action of the electric field and ignites the mixed gas. After the mixed gas is ignited, the temperature in the nozzle is gradually raised, the memory spring 16 is gradually restored to the original length to drive the ignition contact 17 to rise, and the electric field between the gravity block 15 and the fixed block 5 is weakened and is not enough to enable the ignition contact 17 to discharge. An ignition switch is arranged between the gravity block 15 and the ignition power supply. When the nozzle is not used, the ignition switch is turned off, so that sparks generated by the ignition contact 17 are avoided, and potential safety hazards are eliminated.
The anti-flameout metal net 16 is arranged at the position of the nozzle opening 2, the anti-flameout metal net 16 is composed of metal wires, and the diameter of each metal wire is smaller than 0.2 mm. The metal wire is made of heat-resistant metal material with high heat content.
Two gas cyclones 4 are axially spaced outside the connecting rod 12, and the deflection directions of the swirl blades 14 of two adjacent gas cyclones 4 relative to the central hub 13 are opposite.
The inner diameter of the closed end of the nozzle body 1 is larger than that of the end of the nozzle opening 2 of the nozzle body 1.
Claims (4)
1. The utility model provides a carbon element baker prevents flame-out nozzle, includes the nozzle body, the one end of nozzle body is sealed, and the other end is equipped with nozzle opening, its characterized in that: a fuel gas inner pipe, a gas swirler and an ignition mechanism are sequentially arranged in the nozzle body along the flowing direction of the gas flow;
the fuel gas inner pipe is coaxially fixed at one closed end of the nozzle body, one end of the fuel gas inner pipe extends out of the outer side of the closed end of the nozzle body and is provided with a fuel gas inlet, the other end of the fuel gas inner pipe is closed, the outer peripheral surface of the fuel gas inner pipe is fixedly provided with a plurality of fuel gas dispersion pipes, the plurality of fuel gas dispersion pipes are uniformly fixed on the side wall of the fuel gas inner pipe in a radial shape and are communicated with the inside of the fuel gas inner pipe, and the fuel gas; a combustion-supporting gas cavity is formed between the fuel gas inner tube and the nozzle body, the combustion-supporting gas cavity is provided with a combustion-supporting gas inlet and a helical blade, the combustion-supporting gas inlet is arranged on the side wall of the end part of the nozzle body close to the fuel gas inlet, the helical blade is fixed on the outer wall of the fuel gas inner tube, and the helical blade divides the combustion-supporting gas cavity into a helical gas inlet channel;
the gas swirler comprises a central hub and a plurality of swirl blades, the central hub is connected with a connecting rod coaxial with the central hub, the connecting rod is fixed at one closed end of the fuel gas inner tube, the plurality of swirl blades are fixed on the outer peripheral surface of the central hub and are distributed circumferentially around the axis of the central hub, and the swirl blades are arranged in a deflection way relative to the axis of the central hub;
the ignition mechanism comprises a fixed block, a gravity block, a memory spring, an ignition contact and an ignition power supply, wherein the fixed block is fixed on the lower side wall of the nozzle body, the gravity block is arranged above the fixed block and is fixed on the upper side wall of the nozzle body through the memory spring, the fixed block and the gravity block are both made of conductive materials, one end of the ignition contact is fixed on the lower surface of the gravity block and is communicated with the gravity block, the other end of the ignition contact is in a taper shape, and the gravity block and the fixed block are respectively connected with a positive electrode and a negative electrode;
the anti-flameout metal net is arranged at the nozzle opening and consists of metal wires, and the diameter of each metal wire is smaller than 0.2 mm.
2. The carbon baking furnace flameout preventing nozzle as claimed in claim 1, wherein: more than two gas cyclones are axially arranged at intervals outside the connecting rod, and the deflection directions of the swirl blades of the two adjacent gas cyclones relative to the central hub are opposite.
3. The carbon baking furnace flameout preventing nozzle as claimed in claim 1, wherein: the metal wire is made of heat-resistant metal material with high heat content.
4. The carbon baking furnace flameout preventing nozzle as claimed in claim 1, wherein: the inner diameter of the closed end of the nozzle body is larger than that of the nozzle opening end of the nozzle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386888.5U CN209820162U (en) | 2019-03-26 | 2019-03-26 | Carbon baking furnace flameout-preventing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920386888.5U CN209820162U (en) | 2019-03-26 | 2019-03-26 | Carbon baking furnace flameout-preventing nozzle |
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| Publication Number | Publication Date |
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| CN209820162U true CN209820162U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920386888.5U Active CN209820162U (en) | 2019-03-26 | 2019-03-26 | Carbon baking furnace flameout-preventing nozzle |
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| CN (1) | CN209820162U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111496249A (en) * | 2020-04-27 | 2020-08-07 | 宁波江丰钨钼材料有限公司 | Flameout preventing device of tempering tank of sintering furnace and application thereof |
-
2019
- 2019-03-26 CN CN201920386888.5U patent/CN209820162U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111496249A (en) * | 2020-04-27 | 2020-08-07 | 宁波江丰钨钼材料有限公司 | Flameout preventing device of tempering tank of sintering furnace and application thereof |
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