CN209054543U - A kind of more return structures gas-steam boilers - Google Patents
A kind of more return structures gas-steam boilers Download PDFInfo
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- CN209054543U CN209054543U CN201821232854.2U CN201821232854U CN209054543U CN 209054543 U CN209054543 U CN 209054543U CN 201821232854 U CN201821232854 U CN 201821232854U CN 209054543 U CN209054543 U CN 209054543U
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Abstract
The utility model relates to boiler plant technical fields, and in particular to a kind of more return structures gas-steam boilers comprising boiler body and air preheat cylinder are disposed with air inlet, burner, burner hearth and return combustion chamber on the boiler body；It further include two return smoke pipe, three backhaul smoke pipes, four backhaul smoke pipes, upper front smoke box, lower front smoke box and rear smoke box in the boiler body；The flue gas of the upper front smoke box is discharged into atmosphere after air preheat cylinder, and the air inlet of burner hearth is entered after the air preheat of the air preheat cylinder.The utility model has the beneficial effects that: exhaust gases passes lengthen using more return flues, reduce the discharge of pernicious gas.The utility model also makes it cool down by air preheat cylinder before flue gas discharge, inputs hot-air to the air inlet of burner hearth after air preheat cylinder preheated air, to further increase boiler thermal efficiency, on the other hand reduces exhaust gas temperature, makes boiler environmental protection and energy saving.
Description
Technical field
The utility model relates to boiler plant technical fields, and in particular to a kind of more return structures gas-steam boilers.
Background technique
Boiler is a kind of heating equipment, and urban heat supplying boiler consumes a large amount of non-renewable energy, side by side the pollutant of amplification quantity.With
Natural gas is the boiler of fuel, and it is the major vectors of flue gas heat that the flue gas of discharge, which has quite high temperature,.In burner hearth
Flue-gas temperature it is excessively high, the concentration of oxynitrides is larger, and fuel gas buring efficiency is lower.The flame that burner generates passes through furnace
Thorax after being transferred to combustion chamber, through the first backhaul, after the second backhaul smoke pipe, is then discharged into atmosphere through chimney by rear smoke chamber, due to flue gas
Process is shorter, and exhaust temperature is higher, causes the waste of the energy.
Existing boiler air preheating is to flow flue gas in heat exchanger tube by air to flow progress heat outside heat exchanger tube
Exchange, heat exchanger tube are smooth straight tube, and flowing of the air in heat exchanger tube is laminar flow, and intraductal heat exchange coefficient is lower, heat exchanger
Heat transfer effect is bad, causes the overall heat transfer effect of boiler air preheating cylinder bad.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of high more return structures combustion and steams of heat exchange efficiency
Boiler.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model are as follows: improve a kind of more return structures combustions
Gas steam boiler, including boiler body and air preheat cylinder are disposed with air inlet, burner, furnace on the boiler body
Thorax and return combustion chamber；Further include two return smoke pipe in the boiler body, three backhaul smoke pipes, four backhaul smoke pipes, upper front smoke box, it is lower before
Smoke box and rear smoke box；
It is equipped with two return smoke pipe above the burner hearth, is equipped with three backhaul smoke pipes, the four backhauls smoke pipe below the burner hearth
It is arranged above two return smoke pipe；The burner hearth front end is equipped with mutually isolated upper front smoke box and lower front smoke box, after the burner hearth
End is equipped with rear smoke box, and the top of the return combustion chamber is connected with two return smoke pipe, the other end of the two return smoke pipe with it is lower before
Smoke box is connected, and the lower front smoke box is connected by three backhaul smoke pipes with rear smoke box, and the rear smoke box passes through four backhaul smoke pipes
It is connected with upper front smoke box, the flue gas of the upper front smoke box is discharged into atmosphere after air preheat cylinder, the air preheat cylinder
Enter the air inlet of burner hearth after air preheat.
The utility model has the beneficial effects that: more return structures gas-steam boilers of the utility model, using more times
Journey flue greatly improves the efficiency of boiler, while exhaust gases passes lengthen, and decrease the discharge of pernicious gas.This is practical new
Type also makes it cool down by air preheat cylinder before flue gas discharge, reduces exhaust gas temperature, and air preheat cylinder may further be used to
Hot-air is inputted to the air inlet of burner hearth after preheated air, fire box temperature can be improved, improves burning condition, makes the incomplete of fuel
Combustible loss decline, to further increase boiler thermal efficiency, makes boiler environmental protection and energy saving.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of more return structures gas-steam boilers of specific embodiment of the present invention；
Label declaration:
1, air inlet, 2, burner；3, burner hearth, 4, return combustion chamber；5, two return smoke pipe；6, three backhaul smoke pipe；7, four backhaul
Smoke pipe；8, air preheat cylinder；81, gas inlet；82, exhanst gas outlet；
83, stainless steel plate pipe；9, upper front smoke box；10, lower front smoke box；11, rear smoke box.
Specific embodiment
For technology contents, the objects and the effects that the utility model is described in detail, below in conjunction with embodiment and match
Attached drawing is closed to be explained.
The design of the utility model most critical is: more return structures gas-steam boilers of the utility model, using more
Return flue greatly improves the thermal efficiency of boiler, while exhaust gases passes lengthen, and decrease the discharge of pernicious gas.
Please refer to Fig. 1, a kind of more return structures gas-steam boilers, including boiler body and air preheat cylinder 8, the pot
Air inlet 1, burner 2, burner hearth 3 and return combustion chamber 4 are disposed on furnace body；It further include two return cigarette in the boiler body
Pipe 5, three backhaul smoke pipes 6, four backhaul smoke pipes 7, upper front smoke box 9, lower front smoke box 10 and rear smoke box 11；
It is equipped with two return smoke pipe 5 above the burner hearth 3, is equipped with three backhaul smoke pipes 6, four backhaul below the burner hearth 3
Smoke pipe 7 is arranged above two return smoke pipe 5；3 front end of burner hearth is equipped with mutually isolated upper front smoke box 9 and lower front smoke box 10,
3 rear end of burner hearth is equipped with rear smoke box 11, and the top of the return combustion chamber 4 is connected with two return smoke pipe 5, the two return smoke pipe
5 other end is connected with lower front smoke box 10, and the lower front smoke box 10 is connected by three backhaul smoke pipes 6 with rear smoke box 11, institute
It states rear smoke box 11 to be connected by four backhaul smoke pipes 7 with upper front smoke box 9, the flue gas of the upper front smoke box 9 passes through air preheat cylinder 8
After be discharged into atmosphere, after the air preheat of the air preheat cylinder 8 enter burner hearth 3 air inlet 1.
Above-mentioned more return structures gas-steam boiler flue gas trends: 4-two return of return combustion chamber smoke pipe 5-lower front smoke box 10-
Three backhaul smoke pipes 6-rear 11-four backhaul smoke pipe 7 of smoke box-upper 9-air preheat of front smoke box cylinder 8-are discharged into atmosphere.
Above-mentioned more return structures gas-steam boilers greatly improve the efficiency of boiler, simultaneously using more return flues
Exhaust gases passes lengthen, and decrease the discharge of pernicious gas.The utility model also makes it by air preheat before flue gas discharge
Cylinder 8 cools down, and further increases boiler thermal efficiency, on the other hand reduces exhaust gas temperature, make boiler environmental protection and energy saving.
Further, in above-mentioned more return structures gas-steam boilers, the both ends of the air preheat cylinder 8 are respectively equipped with
Gas inlet 81 and exhanst gas outlet 82, the gas inlet 81 are connected to upper front smoke box 9, and the lower end of the air preheat cylinder 8 is set
There is air intlet, 8 upper end of air preheat cylinder is equipped with air outlet slit；Multiple axial directions are uniformly distributed in the air preheat cylinder 8
Stainless steel plate pipe 83,83 head and the tail of stainless steel plate pipe are in turn connected to form 83 groups of stainless steel plate pipe, the stainless steel plate pipe
83 be hollow plate-shaped tubes, and the stainless steel plate pipe 83 is arranged around its central axes spiral, the both ends of 83 groups of the stainless steel plate pipe
It is connected to respectively with air intlet and air outlet slit, the air outlet slit is connected to the air inlet 1 of burner hearth 3.
The above-mentioned air preheat cylinder course of work: air is entered in stainless steel plate pipe 83 by the air intlet of air preheater
Portion enters the air inlet 1 of burner hearth 3 through air outlet slit after being heated in stainless steel plate pipe 83, improve 3 temperature of burner hearth, improves combustion
Burning condition.
Further, in above-mentioned more return structures gas-steam boilers, the two return smoke pipe 5, three backhaul smoke pipes, 6 He
Four backhaul smoke pipes 7 are threaded flue.
Further, in above-mentioned more return structures gas-steam boilers, stainless steel plate pipe 83 in the air preheat cylinder 8
Outer cavity is divided into several end to end cavitys by partition.By upper description it is found that setting partition can extend flue gas in air
The heat exchange length in cylinder 8 is preheated, improves heat exchange efficiency, and further decrease flue-gas temperature.
Further, in above-mentioned more return structures gas-steam boilers, sound wave ashing is equipped in the air preheat cylinder 8
Device.By upper description it is found that acoustic wave soot blower can dust in periodic cleaning air preheat cylinder 8, avoid dust from influencing heat exchange, guarantee to change
The stability of the thermal efficiency.
Embodiment one
A kind of more return structures gas-steam boilers, including boiler body and air preheat cylinder 8, on the boiler body according to
It is secondary to be provided with air inlet 1, burner 2, burner hearth 3 and return combustion chamber 4；It further include two return smoke pipe 5, three backhauls in the boiler body
Smoke pipe 6, four backhaul smoke pipes 7, upper front smoke box 9, lower front smoke box 10 and rear smoke box 11；
It is equipped with two return smoke pipe 5 above the burner hearth 3, is equipped with three backhaul smoke pipes 6, four backhaul below the burner hearth 3
Smoke pipe 7 is arranged above two return smoke pipe 5；3 front end of burner hearth is equipped with mutually isolated upper front smoke box 9 and lower front smoke box 10,
3 rear end of burner hearth is equipped with rear smoke box 11, and the top of the return combustion chamber 4 is connected with two return smoke pipe 5, the two return smoke pipe
5 other end is connected with lower front smoke box 10, and the lower front smoke box 10 is connected by three backhaul smoke pipes 6 with rear smoke box 11, institute
It states rear smoke box 11 to be connected by four backhaul smoke pipes 7 with upper front smoke box 9, the flue gas of the upper front smoke box 9 passes through air preheat cylinder 8
After be discharged into atmosphere, after the air preheat of the air preheat cylinder 8 enter burner hearth 3 air inlet 1.
The both ends of the air preheat cylinder 8 are respectively equipped with gas inlet 81 and exhanst gas outlet 82, the gas inlet 81 with
Upper front smoke box 9 is connected to, and the lower end of the air preheat cylinder 8 is equipped with air intlet, and 8 upper end of air preheat cylinder goes out equipped with air
Mouthful；Multiple axial stainless steel plate pipes 83 are uniformly distributed in the air preheat cylinder 8,83 head and the tail of stainless steel plate pipe successively connect
It connects to form 83 groups of stainless steel plate pipe, the stainless steel plate pipe 83 is hollow plate-shaped tubes, and the stainless steel plate pipe 83 is around its axis
The setting of line spiral, the both ends of 83 groups of the stainless steel plate pipe are connected to air intlet and air outlet slit respectively, the air outlet slit
It is connected to the air inlet 1 of burner hearth 3.
The two return smoke pipe 5, three backhaul smoke pipes 6 and four backhaul smoke pipes 7 are threaded flue.In the air preheat cylinder 8
Cavity several end to end cavitys are divided by partition.Acoustic wave soot blower is equipped in the air preheat cylinder 8.
In conclusion more return structures gas-steam boilers provided by the utility model, using more return flues, greatly
The efficiency of boiler is improved, while exhaust gases passes lengthen, and decrease the discharge of pernicious gas.The utility model is also discharged in flue gas
Before so that it is cooled down by air preheat cylinder, input hot-air to the air inlet of burner hearth after air preheat cylinder preheated air, can be improved
Fire box temperature improves burning condition, declines the incomplete combustion loss of fuel, to further increase boiler thermal efficiency, separately
On the one hand exhaust gas temperature is reduced, boiler environmental protection and energy saving are made.
Partition, which is arranged, can extend heat exchange length of the flue gas in air preheat cylinder, improve heat exchange efficiency, and further decrease
Flue-gas temperature.Be arranged acoustic wave soot blower can dust in periodic cleaning air preheat cylinder, avoid dust from influencing heat exchange, guarantee heat exchange effect
The stability of rate.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalents made based on the specification and figures of the utility model are applied directly or indirectly in relevant technology neck
Domain is also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of more return structures gas-steam boilers, which is characterized in that including boiler body and air preheat cylinder, the boiler
Air inlet, burner, burner hearth and return combustion chamber are disposed on ontology；It further include two return smoke pipe in the boiler body, three
Backhaul smoke pipe, four backhaul smoke pipes, upper front smoke box, lower front smoke box and rear smoke box；
It is equipped with two return smoke pipe above the burner hearth, three backhaul smoke pipes, the four backhauls smoke pipe setting are equipped with below the burner hearth
Above two return smoke pipe；The burner hearth front end is equipped with mutually isolated upper front smoke box and lower front smoke box, and the burner hearth rear end is set
There is rear smoke box, the top of the return combustion chamber is connected with two return smoke pipe, the other end of the two return smoke pipe and lower front smoke box
Be connected, the lower front smoke box is connected by three backhaul smoke pipes with rear smoke box, it is described after smoke box by four backhaul smoke pipes with it is upper
Front smoke box is connected, and the flue gas of the upper front smoke box is discharged into atmosphere, the air of the air preheat cylinder after air preheat cylinder
Enter the air inlet of burner hearth after preheating；
The both ends of the air preheat cylinder are respectively equipped with gas inlet and exhanst gas outlet, and the gas inlet and upper front smoke box connect
Logical, the lower end of the air preheat cylinder is equipped with air intlet, and air preheat cylinder upper end is equipped with air outlet slit；The air is pre-
Multiple axial stainless steel plate pipes are uniformly distributed in hot cylinder, the stainless steel plate pipe head and the tail are in turn connected to form stainless steel plate pipe
Group, the stainless steel plate pipe are hollow plate-shaped tubes, and the stainless steel plate pipe is arranged around its central axes spiral, the stainless steel plate
The both ends of pipe group are connected to air intlet and air outlet slit respectively, and the air outlet slit is connected to the air inlet of burner hearth.
2. more return structures gas-steam boilers according to claim 1, which is characterized in that the two return smoke pipe, three
Backhaul smoke pipe and four backhaul smoke pipes are threaded flue.
3. more return structures gas-steam boilers according to claim 1, which is characterized in that the air preheat tube inner chamber
Body is divided into several end to end cavitys by partition.
4. more return structures gas-steam boilers according to claim 1, which is characterized in that set in the air preheat cylinder
There is acoustic wave soot blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232854.2U CN209054543U (en) | 2018-08-01 | 2018-08-01 | A kind of more return structures gas-steam boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232854.2U CN209054543U (en) | 2018-08-01 | 2018-08-01 | A kind of more return structures gas-steam boilers |
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| Publication Number | Publication Date |
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| CN209054543U true CN209054543U (en) | 2019-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821232854.2U Active CN209054543U (en) | 2018-08-01 | 2018-08-01 | A kind of more return structures gas-steam boilers |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606785A (en) * | 2021-08-11 | 2021-11-05 | 郭奇 | Forced circulation ultra-low nitrogen vacuum phase-change hot water condensation boiler |
-
2018
- 2018-08-01 CN CN201821232854.2U patent/CN209054543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113606785A (en) * | 2021-08-11 | 2021-11-05 | 郭奇 | Forced circulation ultra-low nitrogen vacuum phase-change hot water condensation boiler |
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