CN113028425B - Full-premixing natural gas combustion device - Google Patents

Full-premixing natural gas combustion device Download PDF

Info

Publication number
CN113028425B
CN113028425B CN202110332325.XA CN202110332325A CN113028425B CN 113028425 B CN113028425 B CN 113028425B CN 202110332325 A CN202110332325 A CN 202110332325A CN 113028425 B CN113028425 B CN 113028425B
Authority
CN
China
Prior art keywords
natural gas
valve
valve core
premixing
combustion device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110332325.XA
Other languages
Chinese (zh)
Other versions
CN113028425A (en
Inventor
陈伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Xianchuang Energy Technology Co ltd
Original Assignee
Zhejiang Xianchuang Energy Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Xianchuang Energy Technology Co ltd filed Critical Zhejiang Xianchuang Energy Technology Co ltd
Priority to CN202110332325.XA priority Critical patent/CN113028425B/en
Publication of CN113028425A publication Critical patent/CN113028425A/en
Application granted granted Critical
Publication of CN113028425B publication Critical patent/CN113028425B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/82—Preventing flashback or blowback
    • F23D14/825—Preventing flashback or blowback using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2204/00—Supplementary heating arrangements
    • F23G2204/10—Supplementary heating arrangements using auxiliary fuel
    • F23G2204/103—Supplementary heating arrangements using auxiliary fuel gaseous or liquid fuel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The invention discloses a full-premixing natural gas combustion device which comprises an incinerator body, wherein a sludge feeding port, a smoke exhaust channel and a premixing natural gas pipeline are arranged on the incinerator body, a premixing valve body is arranged on the premixing natural gas pipeline, the premixing valve body comprises a valve shell with two communicated ends, one end of the valve shell is connected with a fan through a pipeline, the other end of the valve shell is connected with the incinerator body through a pipeline, a slide way is arranged in the valve shell and provided with a natural gas pipeline communication port, a valve core is arranged in the slide way in a sliding mode, a conical flow guide channel is arranged on the air inlet side of the valve core, a retaining ring is arranged on the air outlet side of the valve core, a natural gas inlet gap is formed between the retaining ring and the valve core, and a spring is arranged between the retaining ring and the end face of the slide way. The full-premixing natural gas combustion device can prevent tempering under the condition that the flow rate of premixed gas is low, and can effectively prevent danger caused by forgetting to close a natural gas pipeline.

Description

Full-premixing natural gas combustion device
Technical Field
The invention belongs to the technical field of natural gas combustion devices, and particularly relates to a full-premixing natural gas combustion device, in particular to a natural gas combustion device for a sludge incinerator.
Background
Along with the development of economy, the awareness of people on environmental protection is gradually enhanced, more and more sewage is generated in people's life, and how to scientifically treat the sewage and the sludge becomes a serious challenge of current environmental protection. In the prior art, the sludge filtered out from the sewage is generally treated by adopting a local incineration mode, and the heat energy generated during the incineration can be used for recovering the heat energy. Not only reduces the pollution amount, but also can reasonably recover energy.
According to the requirements of standard specifications such as 'technical specification for sludge incineration treatment in municipal wastewater treatment plants' (JB/T11826-2014) and the like, the temperature of the hearth is controlled within the range of 850-950 ℃ so as to ensure the thorough incineration of sludge organic matters and reduce the generation amount of pollutants such as carbon monoxide, nitrogen oxides and the like. Because the temperature change in the furnace when mud can lead to mud burning can be caused to the difference of the moisture content in mud and the difference of the material that mud itself contains, the mud moisture content is higher, the lower is the temperature in the furnace, the general moisture content of mud that sewage produced after the filter-pressing is about 80%, direct combustion furnace temperature is difficult to reach 850 ~ 950 ℃, consequently need carry out the predrying with mud, reduce its moisture content and just can make the furnace temperature reach 850 ~ 950 ℃, because the combustible substance that contains in the mud is different, consequently some mud need additionally add fuel when burning and support combustion, in order to guarantee that the temperature in the furnace maintains 850 ~ 950 ℃.
In the prior art, the fuel generally adopts coal water slurry and natural gas, spout into coal water slurry or let in the natural gas and carry out combustion-supporting under the prerequisite of letting in the air, in the equipment that adopts the natural gas as the fuel, in order to promote the combustion efficiency of natural gas, generally with natural gas and air premix, adopt full premix natural gas burner promptly, full premix natural gas burner has because in the pipeline natural gas and air mix, consequently the gas in the pipeline has possessed the possibility of direct combustion, must guarantee that the air output is greater than flame propagation speed, just can prevent the tempering, and among the prior art, natural gas pipeline and air pipeline are generally the intercommunication, if forget to close natural gas pipeline's valve probably lead to the natural gas to continuously burn in the pipeline, cause danger.
Disclosure of Invention
The invention provides a full-premix natural gas combustion device aiming at the defects of the prior art, the full-premix natural gas combustion device automatically opens and closes a natural gas pipeline through the air flow rate, the natural gas pipeline is automatically opened when the air flow rate is higher than the flame propagation speed, and the natural gas pipeline is automatically closed when the air flow rate is lower than the flame propagation speed, so that tempering can be prevented under the condition that the premixed gas flow rate is slow, and the danger caused by forgetting to close the natural gas pipeline can be effectively prevented.
In order to solve the technical problem, the invention is solved by the following technical scheme: full premix natural gas burner, including burning the burning furnace body, it adds mouth, smoke exhaust channel and mixes the natural gas line to be provided with mud on the burning furnace body to burn, mix the last premix valve body that is provided with of natural gas line, mix the valve body including the valve casing of both ends intercommunication in advance, valve casing one end has the fan through the pipe connection, the valve casing other end passes through the pipe connection burn the burning furnace body, be provided with the slide in the valve casing, the slide is equipped with natural gas line intercommunication mouth, it is provided with the case to slide in the slide, the case side of admitting air is provided with toper water conservancy diversion passageway, the case side of giving vent to anger is provided with the retaining ring, retaining ring with natural gas admission clearance has between the case, retaining ring with be provided with the spring between the terminal surface of slide, when the air flow rate that the fan provided is greater than flame propagation speed, air promotion the case compresses the spring with natural gas admission clearance with natural gas line intercommunication mouth Aligning; when the air flow rate provided by the fan is smaller than the flame propagation speed, the spring pushes the valve core to enable the baffle ring to plug the natural gas pipeline communication port. When the full-premixing natural gas combustion device is used, air in a premixing natural gas pipeline flows by starting a fan, when the air flow speed in the premixing natural gas pipeline is low or the air does not flow, namely the air flow speed is lower than the flame propagation speed, the pressure of the air on a valve core is low, and the elastic force of a spring blocks a stop ring from a communicating port of the natural gas pipeline, so that no natural gas is discharged; when the air flow rate is higher, namely the air flow rate is higher than the flame propagation speed, the pressure of the air on the valve core is increased, the valve core is pushed to move and the spring is compressed, so that the natural gas inlet gap is aligned with the communication opening of the natural gas pipeline, a Venturi effect is generated under the action of air jet flow, and the natural gas is attracted into the valve shell and is mixed with the air in the premixing natural gas pipeline; adopt this kind of full premix natural gas burner can be by fan automatic control switching natural gas line to automatically opening natural gas line when air velocity is greater than flame propagation speed, self-closing natural gas line when air velocity is less than flame propagation speed, can enough prevent tempering under the slower condition of premix gas velocity of flow, can effectively prevent again because of forgetting to close natural gas line and cause danger.
In the above technical scheme, preferably, the baffle ring is provided with two annular grooves, the two annular grooves are internally provided with sealing rings, and when the air flow rate provided by the fan is smaller than the flame propagation speed, the two sealing rings are positioned at two sides of the natural gas pipeline communication port. Adopt this structure to be used for promoting the leakproofness between fender ring and the slide, prevent that natural gas from leaking.
In the above technical scheme, preferably, the valve core is provided with a plurality of caulking grooves, the stop ring is provided with a plurality of elastic rods, the end of each elastic rod is provided with an insert block, and the insert blocks are clamped into the caulking grooves to fixedly connect the stop ring with the valve core.
In the above technical scheme, preferably, a fire retardant sleeve is sleeved on the outer side of the elastic rod, and a plurality of air holes are formed in the fire retardant sleeve. A fire retardant sleeve is sleeved on the elastic rod for further preventing backfire.
In the above technical scheme, preferably, the natural gas pipeline communication port is connected with a check valve, and the check valve is connected with a natural gas pipeline.
In the above technical scheme, preferably, a normally open temperature control switch is arranged in the smoke evacuation channel, an electromagnet is arranged outside the valve housing, the electromagnet is connected in series with the normally open temperature control switch and the power supply, a ferromagnetic component is arranged on the valve element, when the temperature of the normally open temperature control switch is lower than a set closing temperature, the electromagnet is powered off, the valve element is pushed by air to slide in the slide way, and when the temperature of the normally open temperature control switch is higher than or equal to the set closing temperature, the electromagnet attracts the valve element to enable the blocking ring to block the natural gas pipeline communication port. By adopting the structure, when the temperature in the smoke exhaust channel is overhigh, the valve core is electrified and attracted by the electromagnet, so that the stop ring blocks the communication port of the natural gas pipeline to stop the supply of natural gas, and the temperature in the hearth is reduced; when the temperature in the smoke exhaust channel is too low, the electromagnet is powered off, so that the valve core is pushed by air to slide in the slide way, and then natural gas is introduced, thereby automatically maintaining the temperature stability in the hearth.
In the above technical solution, preferably, the ferromagnetic member is a fire retardant sleeve disposed on the valve core or a part of the fire retardant sleeve.
Among the above-mentioned technical scheme, preferred, the electro-magnet is hung through the screw thread and is established and be fixed in the valve casing outside.
Compared with the prior art, the invention has the following beneficial effects: when the full-premixing natural gas combustion device is used, air in a premixing natural gas pipeline flows by starting a fan, when the air flow speed in the premixing natural gas pipeline is low or the air does not flow, namely the air flow speed is lower than the flame propagation speed, the pressure of the air on a valve core is low, and the elastic force of a spring blocks a stop ring from a communicating port of the natural gas pipeline, so that no natural gas is discharged; when the air flow rate is higher, namely the air flow rate is higher than the flame propagation speed, the pressure of the air on the valve core is increased, the valve core is pushed to move and the spring is compressed, so that the natural gas inlet gap is aligned with the communication opening of the natural gas pipeline, a Venturi effect is generated under the action of air jet flow, and the natural gas is attracted into the valve shell and is mixed with the air in the premixing natural gas pipeline; adopt this kind of full premix natural gas burner can be by fan automatic control switching natural gas line to automatically opening natural gas line when air velocity is greater than flame propagation speed, self-closing natural gas line when air velocity is less than flame propagation speed, can enough prevent tempering under the slower condition of premix gas velocity of flow, can effectively prevent again because of forgetting to close natural gas line and cause danger.
Drawings
Fig. 1 is a schematic view of the connection structure according to the embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of a premix valve body in a natural gas cut-off state according to an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view of the premix valve body in communication with natural gas according to an embodiment of the present invention.
Fig. 4 is a schematic view of a connection structure of the valve core and the check ring in the embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 4, the full premix natural gas combustion device comprises an incinerator body 1, a sludge inlet 2, a smoke exhaust channel 3 and a premix natural gas pipeline 4 are arranged on the incinerator body 1, a premix valve body 5 is arranged on the premix natural gas pipeline 4, the premix valve body 5 comprises a valve casing 51 with two ends communicated, one end of the valve casing 51 is connected with a fan 6 through a pipeline, the other end of the valve casing 51 is connected with the incinerator body 1 through a pipeline, a slide way 52 is arranged in the valve casing 51, the slide way 52 is provided with a natural gas pipeline communication port 53, a valve core 54 is arranged in the slide way 52 in a sliding manner, a conical flow guide channel 541 is arranged on the air inlet side of the valve core 54, a baffle ring 55 is arranged on the air outlet side of the valve core 54, a natural gas inlet gap 56 is arranged between the baffle ring 55 and the valve core 54, a spring 57 is arranged between the baffle ring 55 and the end surface of the slide way 52, when the air flow rate provided by the fan 6 is larger than the flame propagation speed, the air pushes the spool 54 compressing the spring 57 to align the natural gas intake gap 56 with the natural gas conduit communication port 53; when the air flow rate provided by the fan 6 is smaller than the flame propagation speed, the spring 57 pushes the valve core 54 so that the stopper ring 55 blocks the natural gas pipe communication port 53. When the full-premixing natural gas combustion device is used, air in the premixing natural gas pipeline 4 flows by starting the fan 6, when the air flow speed in the premixing natural gas pipeline 4 is low or the air does not flow, namely the air flow speed is lower than the flame propagation speed, the pressure of the air on the valve core 54 is low, the stop ring 55 is blocked by the elastic force of the spring 57, and no natural gas is discharged; when the air flow rate is high, namely the air flow rate is higher than the flame propagation speed, the pressure of the air on the valve core 54 is increased, the valve core is pushed to move and the spring 57 is compressed, so that the natural gas inlet gap 56 is aligned with the natural gas pipeline communication opening 53, and a venturi effect is generated under the action of air jet flow, natural gas is attracted into the valve shell 51 and is mixed with the air in the premixing natural gas pipeline 4; adopt this kind of full premix natural gas burner can be by 6 automatic control switching natural gas line of fan to automatically open natural gas line when air velocity is greater than flame propagation speed, automatically closed natural gas line when air velocity is less than flame propagation speed, can enough prevent tempering under the slower condition of premix gas velocity of flow, can effectively prevent to cause danger because of forgetting to close natural gas line again.
In this embodiment, in order to improve the sealing performance between the baffle ring 55 and the chute 52 and prevent the natural gas from leaking, two annular grooves 551 are provided on the baffle ring 55, and sealing rings 552 are provided in the two annular grooves 551, and when the air flow rate provided by the fan 6 is smaller than the flame propagation speed, the two sealing rings 552 are located at two sides of the natural gas pipeline communicating opening 53.
In this embodiment, the valve core 54 is provided with a plurality of grooves 542, the retainer ring 55 is provided with a plurality of elastic rods 553, the ends of the elastic rods 553 are provided with inserts 554, and the inserts 554 are clamped into the grooves 542 to fixedly connect the retainer ring 55 and the valve core 54.
In this embodiment, in order to further prevent backfire, a fire retardant sleeve 58 is sleeved outside the elastic rod 553, and a plurality of air holes 581 are formed in the fire retardant sleeve 58.
In this embodiment, for preventing air admission natural gas line 8, be connected with check valve 7 on the natural gas line intercommunication mouth 53, be connected with natural gas line 8 on the check valve 7.
When the sludge is burnt, a heat recovery device is generally used for absorbing the generated heat, high-temperature steam and the like are produced by recovering the heat generated by the burning of the sludge, and the waste is changed into valuable. And heat supply is stable in general heat reclamation device needs the furnace, for example, heat reclamation device that heats is carried out water, its water supply is fixed, if the high temperature in the furnace, then can lead to it can't absorb the heat completely, and if the low temperature in the furnace, then can lead to the temperature to hang down excessively, can exert an influence to hydrothermal use end, and current natural gas generally is artifical and controls through the valve, can't come the injection volume of automatically regulated natural gas according to the temperature in the furnace, it is difficult to keep the temperature stability in the furnace, be unfavorable for energy saving and emission reduction.
In this embodiment, be provided with normally open temperature detect switch 9 in the discharge flue 3, the valve casing 51 outside is provided with electro-magnet 10, electro-magnet 10 and normally open temperature detect switch 9 and power 11 and establish ties, are provided with ferromagnetic part on the case 54, and wherein, ferromagnetic part is for setting up the back-fire relief cover 58 on the case 54 also can be the partly on the back-fire relief cover 58, and in this embodiment, back-fire relief cover 58 is whole to be iron. When the temperature of the normally open temperature control switch 9 is lower than the set closing temperature, the electromagnet 10 is powered off, the valve core 54 is pushed by air to slide in the slide rail 52, and when the temperature of the normally open temperature control switch 9 is higher than or equal to the set closing temperature, the electromagnet 10 attracts the valve core 54 to enable the baffle ring 55 to block the natural gas pipeline communication port 53. The normally open temperature control switch 9 adopts a temperature control switch 9 controlled by a thermosensitive bimetallic strip and is arranged in the smoke exhaust channel 3, the temperature of the smoke in the smoke exhaust channel 3 is gradually reduced along with the increase of the flowing distance of the smoke, under the condition that the temperature in the furnace chamber is not changed, the temperature of each position in the smoke exhaust channel 3 is basically kept unchanged, when the temperature in the hearth is reduced or increased, the temperature at each position in the smoke exhaust channel 3 is increased or decreased, each normally-open temperature control switch 9 has the set off temperature, the normally-open temperature control switch 9 is arranged in the smoke exhaust channel 3 at the position corresponding to the set off temperature, for example, the closing temperature of the normally open temperature control switch 9 is 80 ℃, the temperature requirement in the hearth is set to 900 ℃, the normally open temperature control switch 9 is arranged at the position where the temperature in the hearth is 900 ℃, and the discharged flue gas is gradually cooled to 80 ℃ when flowing through the smoke exhaust channel 3; at the moment, if the temperature in the hearth is reduced to be less than 900 ℃, the temperature at the normally open temperature control switch 9 is reduced to be lower than 80 ℃, the normally open temperature control switch 9 is switched off, the electromagnet 10 is powered off, the valve core 54 is pushed by air to slide in the slide way 52, the natural gas inlet gap 56 is aligned with the natural gas pipeline communication port 53, and a venturi effect is generated under the action of air jet flow to attract natural gas to enter the valve shell 51 and introduce the natural gas; if the temperature in the hearth is as high as above 900 ℃, the normally-open temperature control switch 9 is closed, the electromagnet 10 is electrified, and the electromagnet 10 attracts the valve core 54 to enable the baffle ring 55 to block the natural gas pipeline communication opening 53. When the temperature in the smoke exhaust channel 3 is too high, the supply of natural gas is automatically stopped, so that the temperature in the hearth is reduced; when the temperature in the smoke exhaust channel 3 is too low, natural gas is automatically introduced, so that the temperature in the hearth is automatically maintained to be stable. The temperature of the hearth can be automatically and stably controlled, the over-large temperature fluctuation of the hearth caused by the difference of sludge components or water content is avoided, the heat can be stably absorbed by the heat recovery device, and the energy conservation and emission reduction are facilitated.
For easy installation, in this embodiment, the electromagnet 10 is screwed to the outside of the valve housing 51.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (8)

1. Full premix natural gas burner, including burning furnace body (1), burn burning furnace body (1) and be provided with mud inlet (2), smoke exhaust passage (3) and premix natural gas line (4), its characterized in that: the natural gas premixing incinerator is characterized in that a premixing valve body (5) is arranged on the premixing natural gas pipeline (4), the premixing valve body (5) comprises a valve casing (51) with two communicated ends, one end of the valve casing (51) is connected with a fan (6) through a pipeline, the other end of the valve casing (51) is connected with the incinerator body (1) through a pipeline, a slide way (52) is arranged in the valve casing (51), a natural gas pipeline communication port (53) is formed in the slide way (52), a valve core (54) is arranged in the slide way (52) in a sliding mode, a conical flow guide channel (541) is arranged on the air inlet side of the valve core (54), a baffle ring (55) is arranged on the air outlet side of the valve core (54), a natural gas inlet gap (56) is formed between the baffle ring (55) and the valve core (54), a spring (57) is arranged between the baffle ring (55) and the end face of the slide way (52), and when the air flow rate provided by the fan (6) is larger than the flame propagation speed, air pushes the spool (54) to compress the spring (57) to align the natural gas intake gap (56) with the natural gas conduit communication port (53); when the air flow rate provided by the fan (6) is lower than the flame propagation speed, the spring (57) pushes the valve core (54) to enable the baffle ring (55) to block the natural gas pipeline communication opening (53).
2. The fully premixed natural gas combustion device of claim 1, wherein: two annular grooves (551) are formed in the baffle ring (55), sealing rings (552) are arranged in the two annular grooves (551), and when the air flow rate provided by the fan (6) is smaller than the flame propagation speed, the two sealing rings (552) are located on two sides of the natural gas pipeline communication opening (53).
3. The fully premixed natural gas combustion device of claim 1, wherein: the valve core (54) is provided with a plurality of caulking grooves (542), the stop ring (55) is provided with a plurality of elastic rods (553), the end part of each elastic rod (553) is provided with an embedded block (554), and the embedded blocks (554) are clamped into the caulking grooves (542) so as to fixedly connect the stop ring (55) with the valve core (54).
4. A fully premixed natural gas combustion device according to claim 3, wherein: the outside cover of elastic rod (553) is equipped with back-fire relief cover (58), be provided with a plurality of gas pockets (581) on back-fire relief cover (58).
5. The fully premixed natural gas combustion device of claim 1, wherein: the natural gas pipeline communication port (53) is connected with a one-way valve (7), and the one-way valve (7) is connected with a natural gas pipeline (8).
6. The fully premixed natural gas combustion device of claim 4, wherein: be provided with in smoke evacuation passageway (3) and normally open temperature detect switch (9), valve casing (51) outside is provided with electro-magnet (10), electro-magnet (10) with normally open temperature detect switch (9) and power (11) are established ties, be provided with the ferromagnetic part on case (54), work as when normally open temperature detect switch (9) department temperature is less than when the closed temperature of settlement, electro-magnet (10) outage, case (54) are in slide (52) are interior to be promoted by the air and slide, work as when normally open temperature detect switch (9) department temperature more than or equal to when the closed temperature of settlement, electro-magnet (10) attract case (54) make keep off ring (55) shutoff natural gas line intercommunication mouth (53).
7. The fully premixed natural gas combustion device of claim 6, wherein: the ferromagnetic component is a fire retardant sleeve (58) arranged on the valve core (54) or a part of the fire retardant sleeve (58).
8. The fully premixed natural gas combustion device of claim 6, wherein: the electromagnet (10) is screwed and fixed on the outer side of the valve shell (51) through threads.
CN202110332325.XA 2021-03-29 2021-03-29 Full-premixing natural gas combustion device Active CN113028425B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110332325.XA CN113028425B (en) 2021-03-29 2021-03-29 Full-premixing natural gas combustion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110332325.XA CN113028425B (en) 2021-03-29 2021-03-29 Full-premixing natural gas combustion device

Publications (2)

Publication Number Publication Date
CN113028425A CN113028425A (en) 2021-06-25
CN113028425B true CN113028425B (en) 2021-09-14

Family

ID=76452616

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110332325.XA Active CN113028425B (en) 2021-03-29 2021-03-29 Full-premixing natural gas combustion device

Country Status (1)

Country Link
CN (1) CN113028425B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115596549B (en) * 2022-12-08 2023-03-10 常州柯林电子科技技术有限公司 Natural gas combustion hybrid variable frequency motor assembly and working method thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5769119A (en) * 1996-09-27 1998-06-23 The Lincoln Electric Company Combined control and check valve for gas torches
EP1055877B1 (en) * 1999-05-26 2003-09-03 Lianpeng Jing Burner for producing carbon black
WO2009149989A1 (en) * 2008-06-09 2009-12-17 Siemens Aktiengesellschaft Check valve having a moveable valve body
CN101329067B (en) * 2008-06-26 2010-06-09 胜利油田胜利动力机械集团有限公司 Coal mine mash gas incineration torch
CN101644344A (en) * 2009-08-31 2010-02-10 陆守祥 Regulating valve for proportioning air and fuel gas
CN102080825B (en) * 2009-11-26 2012-10-10 宁波隆兴焊割科技股份有限公司 Back-fire arrestor
CN203453547U (en) * 2013-09-17 2014-02-26 南京贝奇尔机械有限公司 Mixing valve
KR101761903B1 (en) * 2015-05-01 2017-07-26 강의창 Back Fire Preventing Device having a Temperature Sensing Part
KR102029573B1 (en) * 2018-01-31 2019-10-07 김상남 Water Energy Mixed Combustion System

Also Published As

Publication number Publication date
CN113028425A (en) 2021-06-25

Similar Documents

Publication Publication Date Title
CN106322368B (en) A kind of super low NO and its combustion method
CN113028425B (en) Full-premixing natural gas combustion device
US4574711A (en) Granulated solid fuel burner
CN208170386U (en) A kind of natural gas and hydrogen mixed combustion apparatus
SE9702515L (en) Top fuel burner for solid fuels
CN107575856B (en) A kind of flue gas recirculation boiler system
CN106931451B (en) Spiral-flow type incinerator
CN204476360U (en) A kind of individual well sledge dress heated by natural gas throttling arrangement
CN103363797B (en) Efficient energy-saving environment-friendly organic waste gas burning treatment device and system
CN205690387U (en) It is applied to entirely premix the smoke reflux device of boiler and entirely premix boiler
CN112226248B (en) Pulverized coal gasification device and process method for co-burning organic wastewater by using same
CN202303445U (en) Intelligent fuel gas equipment control system
CN210219807U (en) High-concentration organic waste gas combustion device
JP3468925B2 (en) Waste incineration equipment
CN108105787B (en) Combustion system of waste gas incinerator
CN205808137U (en) A kind of furnace exhaust delivery pipe explosion-protection equipment
CN111351043A (en) Secondary combustion device
CN108954312B (en) Sludge recycling system and energy-saving environment-friendly porous combustor thereof
RU2104396C1 (en) Device for protection of air-supply hole of mine from freezing-around
CN203501720U (en) Efficient, energy-saving and environment-friendly organic exhaust gas combustion treatment device
CN216481016U (en) RTO flameless combustion control system
CN208743604U (en) A kind of oxygen-enriched combusting forging equipment
CN208528002U (en) A kind of oxygen-enriched combusting forging equipment with exhaust treatment system
CN213687787U (en) Grate rotary kiln pellet oxygen-enriched coal injection system
CN221035765U (en) Waste gas treatment device for liquid sulfur pool

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant