CN208703917U - A kind of ultralow nitrogen boiler of the premix entirely of more return structures - Google Patents
A kind of ultralow nitrogen boiler of the premix entirely of more return structures Download PDFInfo
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- CN208703917U CN208703917U CN201821273634.4U CN201821273634U CN208703917U CN 208703917 U CN208703917 U CN 208703917U CN 201821273634 U CN201821273634 U CN 201821273634U CN 208703917 U CN208703917 U CN 208703917U
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- furnace body
- heat exchanger
- mixed flow
- flow chamber
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Abstract
The utility model provides a kind of ultralow nitrogen boiler of premix entirely of more return structures, belong to boiler technology field, including furnace body, heat exchanger tube and combustion apparatus, the top of heat exchanger tube is connected to the first mixed flow chamber, the through-hole that the middle part of first mixed flow chamber is equipped with, combustion apparatus is threaded through in through-hole, the bottom of heat exchanger tube is connected to the second mixed flow chamber, it further include water inlet pipe and outlet pipe, combustion apparatus is connected to fuel gas conduit and blower, smoke exhaust pipe is additionally provided on furnace body, the part helix that the outside of furnace body is arranged in water inlet pipe is wound in the outside of smoke exhaust pipe.A kind of ultralow nitrogen boiler of premix entirely of more return structures provided by the utility model, absorb combustion apparatus thermal energy, more return cycle mixing reflux, heat transfer effect is higher, and water absorbs heat faster, heat is absorbed repeatedly, keep the temperature rise effect of water more preferable, while the water in various heat exchange pipe uniformly mixes, the water temperature in outlet pipe is more stable, it can satisfy resident's heating requirement, it is practical.
Description
Technical field
The utility model belongs to boiler technology field, more specifically, be related to a kind of more return structures full premix it is super
Low nitrogen boiler.
Background technique
Currently, the town building heating field in China uses more and more gas fired-boilers, domestic gas fired-boiler mainly has
Steam boiler, normal-pressure hot-water boiler all have power burners and high speed winds wherein mostly using diffusion type combustion technology greatly
Machine issues interference noise in operation and reaches 75 decibels or more, and boiler volume is big, weight weight.Therefore, people research and develop
Full premix combustion technology direct-combustion boiler, full premix combustion are sufficiently mixed by a certain percentage with air in advance i.e. before combustible gas burning
It closes, still, this boiler still remains that fuel gas buring is not complete enough, and flame diffusional area is smaller after burning, and flame is unable to get
The defects of making full use of, the defect cause the water in boiler to cannot be fully absorbed heat, water underheat, heat exchanger effectiveness in turn
The problems such as lower, uses carbon steel or cast iron as heat exchanger materials, not only high production cost in addition, in existing boiler mostly,
And thermal conductivity is not high, meanwhile, in existing boiler, boiler heat exchange pipe is mostly that a root canal or more root canals circulate, heat exchange
Water between pipe is unable to regeneration, and causing the water in various heat exchange pipe to absorb in this way, heat is different, and water temperature is uneven, in addition,
Water circulation area is smaller, and water flow heating surface area is also smaller, and heat transfer effect is poor, can not sufficiently be heated to the water in boiler,
For resident's heating, it is not able to satisfy demand of the resident to room temperature, therefore the practicability is poor for this boiler.
Utility model content
The purpose of this utility model is to provide a kind of ultralow nitrogen boilers of the premix entirely of more return structures, it is intended to solve heat exchange
Effect is poor, and water cannot fully absorb the thermal energy of heat exchanger, and the problem of water temperature stability difference.
To achieve the above objectives, the present invention adopts the following technical solutions:
A kind of ultralow nitrogen boiler of the premix entirely of more return structures, it is characterised in that: including furnace body (1), along the furnace body (1)
The inner cavity multiple vertical heat exchanger tubes (2) being circumferentially arranged and the burning being vertically arranged between multiple heat exchanger tubes (2)
The top of equipment (3), the heat exchanger tube (2) is connected to the first mixed flow chamber (4), and the middle part of first mixed flow chamber (4) is equipped with logical
Hole, the combustion apparatus (3) are threaded through in the through-hole, and the bottom of the first heat exchanger tube (2) is connected to the second mixed flow chamber (5),
In first mixed flow chamber (4) setting there are three the first flow-stopping plate (6) by first mixed flow chamber (4) be separated into three first time
It flows area (7), one of them described first recirculating zone (7) is provided with water inlet pipe (10), and the water inlet pipe (10) runs through the furnace body
(1) and outward extend, another described first recirculating zone (7) is provided with outlet pipe (11), and the outlet pipe (11) runs through institute
It states furnace body (1) and extends outward, setting is mixed there are two the second flow-stopping plate (8) by described second in second mixed flow chamber (5)
Stream chamber (5) be separated into two the second recirculating zones (9), one of them described second flow-stopping plate (8) be located at the water inlet pipe (10) and
The vertical lower of first flow-stopping plate (6) between the outlet pipe (11), another described second flow-stopping plate (8) be positioned at
The vertical lower of the first recirculating zone (7) regional scope that the first flow-stopping plate (6) described in other two is formed, the combustion apparatus
(3) it is connected to fuel gas conduit (12) and blower (13), is additionally provided with smoke exhaust pipe (14) on the furnace body (1), the water inlet pipe (10) sets
Set the outside that the part helix in the outside of the furnace body (1) is wound in smoke exhaust pipe (14)
Further, the combustion apparatus is connected to blower by bellows, and the combustion apparatus connects the bellows
One end be provided with flange, the upper surface of flange is connected and fixed the inner cavity that the furnace body is arranged in for driving the combustion apparatus
The cylinder back and forth gone up and down.
Further, the combustion apparatus includes the mixed air cavity being connected to the bellows and is connected to the mixed air cavity
Combustion head.
Further, the combustion head is wire mesh combustion head, and the wire mesh combustion head is in vertical cylindrical shape,
Flame dispersion hole is also evenly arranged on the wire mesh combustion head.
Further, the inner wall along the furnace body is covered with heat-insulation chamber, the top of the heat-insulation chamber offer heat-insulation chamber into
The mouth of a river, the lower part of the heat-insulation chamber offer heat-insulation chamber discharge outlet.
Further, puigging and insulating layer are provided between the furnace body and the heat-insulation chamber.
Further, multiple fins are provided on the outer surface of the heat exchanger tube.
Further, two second recirculating zones are provided with sewage draining exit.
The beneficial effect for premixing ultralow nitrogen boiler entirely that the utility model provides a kind of more return structures is: with it is existing
Technology is compared, a kind of ultralow nitrogen boiler of the premix entirely of more return structures of the utility model, can be before natural gas and air burning
It is uniformly mixed, and rapid completely burned, burning velocity is not only restricted to gas diffusion velocity, and safety coefficient is high, fuel gas buring reaction
Sufficiently, calorific intensity is high, and ignition temperature is high, and the thermal efficiency is high, in addition, when water is entered in furnace body by water inlet pipe first, the row of first passing through
Smoke pipe absorbs the heat of flue gas, promotes the temperature of water in water inlet pipe, and the water entered in heat exchanger tube later fully absorbs combustion apparatus
The thermal energy of offer, while the water in heat exchanger tube carries out more return cycle mixing reflux, heat transfer effect is higher, and water absorbs heat more
Fastly, heat is absorbed repeatedly, keeps the temperature rise effect of water more preferable, while the water in various heat exchange pipe uniformly mixes, the water in outlet pipe
Temperature is more stable, can satisfy resident's heating requirement, practical.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of structural representation for premixing ultralow nitrogen boiler entirely of more return structures provided by the embodiment of the utility model
Figure；
Fig. 2 is enlarged drawing at the A of Fig. 1；
Fig. 3 is enlarged drawing at the B of Fig. 1；
Fig. 4 is the C direction view of Fig. 1；
Fig. 5 is the D direction view of Fig. 1；
Fig. 6 is the first mixed flow chamber, the attachment structure schematic diagram of the second mixed flow chamber and heat exchanger tube.
In figure: 1, furnace body；2, heat exchanger tube；3, combustion apparatus；4, the first mixed flow chamber；5, the second mixed flow chamber；6, the first baffle
Plate；7, the first recirculating zone；8, the second flow-stopping plate；9, the second recirculating zone；10, water inlet pipe；11, outlet pipe；12, fuel gas conduit；13, wind
Machine；14, smoke exhaust pipe；15, bellows；16, flange；17, cylinder；18, air cavity is mixed；19, combustion head；20, heat-insulation chamber；21, heat-insulated
Chamber water inlet；22, heat-insulation chamber discharge outlet；23, puigging；24, insulating layer；25, fin；26, sewage draining exit.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, with
Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or indirectly on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
Referring to Fig. 1, existing say a kind of ultralow nitrogen boiler of the premix entirely of more return structures provided by the utility model
It is bright.A kind of ultralow nitrogen boiler of premix entirely of more return structures, including furnace body 1, heat exchanger tube 2 and combustion apparatus 3, heat exchanger tube 2
Top be connected to the first mixed flow chamber 4, the lower part of heat exchanger tube 2 is connected to the second mixed flow chamber 5, through-hole, combustion is equipped in the middle part of the first mixed flow chamber 4
Burning equipment 3 can be heated along through-hole lifting exchange heat pipe 2, the outlet air end of the top connection blower 13 of combustion apparatus 3, fuel gas conduit
Air communication combustion gas is blown into combustion apparatus 3 by the outlet air end of 12 connection blowers 13, blower 13 together, is the combustion of combustion apparatus 3
It burns and fuel is provided, air can be uniformly mixed in advance before being burnt with right gas or other imflammable gas, be greatly improved
Efficiency of combustion reduces the discharge amount of nitrogen oxides, the first mixed flow chamber 4 and second mixed flow chamber 5 in mixed heat transfer pipe 2
Water makes the temperature of water keep in balance, and water inlet pipe 10 and outlet pipe 11 are additionally provided in the first mixed flow chamber 4, and the side of furnace body 1 opens up
There is smoke exhaust pipe 14, the flue gas generated for combustion apparatus burning to be discharged, water inlet pipe 10 is helically wound around the outside of smoke exhaust pipe 14, leads to
Water inlet pipe 10 is crossed into boiler plus when water, the heat of smoke exhaust pipe 14 is enough absorbed into the water energy of water inlet pipe 10, absorbs smoke exhaust pipe 14
Flue gas heat, improve the utilization rate of the energy.
In order to realize that the water in heat exchanger tube 2 is able to carry out more backhauls flowing, further defined in the utility model with
Flowering structure:
As shown in Figures 4 to 6, the top of the heat exchanger tube 2 stretches in first mixed flow chamber 4, and described first is mixed
Three the first recirculating zones 7 are divided by three the first flow-stopping plates 6 in stream chamber 4, the first recirculating zone 7 described in two of them is set respectively
There are water inlet pipe 10 and outlet pipe 11, the bottom end of the heat exchanger tube 2 stretches in second mixed flow chamber 5, second mixed flow
Two the second recirculating zones 9 are divided by two the second flow-stopping plates 8 in chamber 5, one of them described second flow-stopping plate 8 is located at described
The vertical lower of first flow-stopping plate 6 between water inlet pipe 10 and the outlet pipe 11, another described second flow-stopping plate 8
Vertical lower in 7 regional scope of the first recirculating zone that the first flow-stopping plate 6 described in other two is formed.
After water inlet pipe 10 is intake, water flows into the first recirculating zone 7 equipped with water inlet pipe 10 by the first mixed flow chamber 4 first
In heat exchanger tube 2 in, the water in heat exchanger tube 2 flows into one of them second recirculating zone 9 in the second mixed flow chamber 5, this is
One backhaul；After water is a certain amount of, water is again flowed by other heat exchanger tubes 2 in the second recirculating zone 9 to the first mixed flow chamber 4
In the first recirculating zone 7 other than water inlet pipe 10 and outlet pipe 11, this is the second backhaul；After water is a certain amount of, water is by being somebody's turn to do
Heat exchanger tube 2 in first recirculating zone 7 is again flowed into another second recirculating zone 9 in the second mixed flow chamber 5, this is third
Backhaul；After water is a certain amount of, water again flows into setting to the first mixed flow chamber 4 by other heat exchanger tubes 2 in the second recirculating zone 9
Have in the first recirculating zone 7 of outlet pipe 11, this is the 4th backhaul；Finally, being flowed out by outlet pipe 11, supply resident's heating.
This programme is not limited only to four backhauls, when 7 quantity of the first recirculating zone in the first mixed flow chamber 4 is N, the second mixed flow chamber
9 quantity of the second mixed flow region in 5 is N-1, is opened up by the above structure, and backhaul number at this time is N+1 times, to the boiler of different model
Backhaul number can be realized by changing the quantity of the second mixed flow region 9 of the first recirculating zone 7.
Further, as shown in Figure 1, combustion apparatus 3 includes the mixed air cavity 18 on top and the combustion head 19 of lower part；
The upper end of mixed air cavity 18 is connect with the outlet air end of blower 13 by bellows 15, and bellows 15 can in certain distance
It realizes elongation and shortens, the upper end of mixed air cavity 18 is additionally provided with a flange 16, and there are multiple gas being uniformly arranged in the upper end of flange 16
Cylinder 17, the lower part of cylinder 17 are mandril, and top is cylinder body, and the lower end of mandril is weldingly fixed on the upper surface of flange 16, and cylinder body is logical
The inner wall that connecting plate is bolted to furnace body 1 is crossed, cylinder 17 connects the controller being arranged on the outer wall of furnace body 1, controller control
Cylinder 17 processed is run, to realize the lifting of combustion apparatus 3, fixed combustion apparatus 3 is avoided to toast heat exchanger tube 2 always
Easily there is aging in part, the heat exchanger tube 2 for being chronically at baking, influence the whole service life of heat exchanger tube 2.
The lower end of mixed air cavity 18 is fixedly connected with combustion head 19, and the combustion head 19 is wire mesh combustion head, the metal
Silk combustion head is in vertical cylindrical shape, is uniformly provided with flame dispersion hole on the wire mesh combustion head.
Wire mesh combustion head is used in the utility model, and flame is mainly split into the countless flammule of large area,
The material of wire mesh combustion head mainly is iron-chromium-aluminum, and further, the diameter of flame dispersion hole is about 30-50 micro-
Rice, combustion intensity is up to 2500kw/m3, and 1300 degree of high temperature resistant, since premixed flame is compact-sized, flame closely attaches fine copper
Finned tube heating, heating efficiency is high, makes full use of flame, in addition, wire mesh combustion head uses radiant heat transfer mode, Ke Yi great
The big efficiency for increasing heat exchange, the fiery face that flame is made of on the surface of combustion head 19 countless blue flare when burning are such
Combustion state is referred to as the burning of face formula, this is also the optimal combustion state of natural gas, saves gas quantity, improves efficiency of combustion
And heat exchange efficiency.
Further, as shown in Fig. 2, being successively arranged insulating layer 24, puigging 23 in the side wall of the furnace body 1 from outside to inside
With heat-insulation chamber 20；
The top of heat-insulation chamber 20 offers heat-insulation chamber water inlet 21, and the lower part of heat-insulation chamber 20 offers heat-insulation chamber discharge outlet
22, the water in heat-insulation chamber 20 can absorb the high-temperature flue gas in the furnace body 1, and the further utilization rate for improving the energy rises simultaneously
To heat-insulated effect；
The design of insulating layer 24 is mainly used for preventing the temperature in furnace body 1 from outwardly spreading, and further reduces furnace body 1
The temperature of lateral wall, avoids operator from being burned；The design of puigging 23 is mainly used for reducing blower 13 and combustion apparatus 3
Noise.
Further, as shown in figure 3, being uniformly provided with multiple fins 19 on the outer surface of the heat exchanger tube 2, the fin 19
For copper fin, for heat exchanger tube 2 using the fine copper of TR2 grade 99.9% as heat exchange material, 19 technology of fin is in the outer of straight copper tube
Surface is in per inch 20mm length six fins of uniform tapping, thus increase heating surface area, the very big portion of the height of boiler thermal efficiency
Divide and depend on heat transfer effect, the heat transfer effect of copper canalis pterygoideus is 9 times of common copper pipe, is nearly 90 times of cast iron steel.
Further, as shown in fig. 6, two second recirculating zones 9 are provided with sewage draining exit 26, pass through 26 energy of sewage draining exit
The impurity in heat exchanger tube 2 is enough cleared up, prevents heat exchanger tube 2 from blocking, influences water circulation.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (8)
1. a kind of ultralow nitrogen boiler of the premix entirely of more return structures, it is characterised in that: including furnace body (1), along the furnace body (1)
Multiple vertical heat exchanger tubes (2) that inner cavity is circumferentially arranged and the burning being vertically arranged between multiple heat exchanger tubes (2) are set
The top of standby (3), the heat exchanger tube (2) is connected to the first mixed flow chamber (4), the through-hole that the middle part of first mixed flow chamber (4) is equipped with,
The combustion apparatus (3) is threaded through in the through-hole, and the bottom of the first heat exchanger tube (2) is connected to the second mixed flow chamber (5), described
First mixed flow chamber (4) is separated into three the first recirculating zones by the first flow-stopping plate (6) there are three being arranged in first mixed flow chamber (4)
(7), one of them described first recirculating zone (7) is provided with water inlet pipe (10), the water inlet pipe (10) through the furnace body (1) and
Extend outward, another described first recirculating zone (7) is provided with outlet pipe (11), and the outlet pipe (11) runs through the furnace body
(1) and outward extend, there are two the interior settings of second mixed flow chamber (5) the second flow-stopping plate (8) by second mixed flow chamber (5)
Two the second recirculating zones (9) are separated into, one of them described second flow-stopping plate (8) is located at the water inlet pipe (10) and the water outlet
The vertical lower of first flow-stopping plate (6) between (11) is managed, another described second flow-stopping plate (8) is positioned at other two
The vertical lower of the first recirculating zone (7) regional scope that first flow-stopping plate (6) is formed, combustion apparatus (3) the connection combustion
Tracheae (12) and blower (13) are additionally provided with smoke exhaust pipe (14) on the furnace body (1), and the water inlet pipe (10) is arranged in the furnace
The part helix of the outside of body (1) is wound in the outside of smoke exhaust pipe (14).
2. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as described in claim 1, it is characterised in that: the burning is set
Standby (3) are connected to blower (13) by bellows (15), and the combustion apparatus (3) connects one end setting of the bellows (15)
Have flange (16), the upper surface of flange (16) is connected and fixed setting in the inner cavity of the furnace body (1) for driving the burning to set
The cylinder (17) that standby (3) are back and forth gone up and down.
3. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as claimed in claim 2, it is characterised in that: the burning is set
For the combustion head (19) that (3) include the mixed air cavity (18) being connected to the bellows (15) and are connected to the mixed air cavity (18).
4. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as claimed in claim 3, it is characterised in that: the combustion head
It (19) is wire mesh combustion head, the wire mesh combustion head is in vertical cylindrical shape, is gone back on the wire mesh combustion head
It is evenly arranged with flame dispersion hole.
5. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as described in claim 1, it is characterised in that: along the furnace body
(1) inner wall is covered with heat-insulation chamber (20), and the top of the heat-insulation chamber (20) offers heat-insulation chamber water inlet (21), described heat-insulated
The lower part of chamber (20) offers heat-insulation chamber discharge outlet (22).
6. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as claimed in claim 5, it is characterised in that: the furnace body
(1) puigging (23) and insulating layer (24) are provided between the heat-insulation chamber (20).
7. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as described in claim 1, it is characterised in that: the heat exchanger tube
(2) multiple fins (25) are provided on outer surface.
8. a kind of ultralow nitrogen boiler of the premix entirely of more return structures as described in claim 1, it is characterised in that: two described the
Two recirculating zones (9) are provided with sewage draining exit (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821273634.4U CN208703917U (en) | 2018-08-08 | 2018-08-08 | A kind of ultralow nitrogen boiler of the premix entirely of more return structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821273634.4U CN208703917U (en) | 2018-08-08 | 2018-08-08 | A kind of ultralow nitrogen boiler of the premix entirely of more return structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208703917U true CN208703917U (en) | 2019-04-05 |
Family
ID=65941039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821273634.4U Expired - Fee Related CN208703917U (en) | 2018-08-08 | 2018-08-08 | A kind of ultralow nitrogen boiler of the premix entirely of more return structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208703917U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197269A (en) * | 2020-08-12 | 2021-01-08 | 山东信科环境科学研究院有限公司 | Differential rotating bed biomass pyrolysis gasification incinerator |
| CN114877519A (en) * | 2022-06-07 | 2022-08-09 | 武汉见金节能技术研发有限公司 | Two-stage heat exchange intelligent multi-section combustion direct-supply water heater |
-
2018
- 2018-08-08 CN CN201821273634.4U patent/CN208703917U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197269A (en) * | 2020-08-12 | 2021-01-08 | 山东信科环境科学研究院有限公司 | Differential rotating bed biomass pyrolysis gasification incinerator |
| CN114877519A (en) * | 2022-06-07 | 2022-08-09 | 武汉见金节能技术研发有限公司 | Two-stage heat exchange intelligent multi-section combustion direct-supply water heater |
| CN114877519B (en) * | 2022-06-07 | 2024-05-14 | 武汉见金节能技术研发有限公司 | Two-stage heat exchange intelligent multi-section combustion direct-supply type water heater |
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Granted publication date: 20190405 Termination date: 20200808 |