CN217928852U - Boiler flue gas system and boiler thereof - Google Patents
Boiler flue gas system and boiler thereof Download PDFInfo
- Publication number
- CN217928852U CN217928852U CN202222387502.7U CN202222387502U CN217928852U CN 217928852 U CN217928852 U CN 217928852U CN 202222387502 U CN202222387502 U CN 202222387502U CN 217928852 U CN217928852 U CN 217928852U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- boiler
- induced draft
- induced
- pipe
- 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
Links
Images
Landscapes
- Incineration Of Waste (AREA)
Abstract
The utility model relates to a chemical production equipment technical field, concretely relates to boiler flue gas system and boiler thereof, wherein the draught fan pipeline includes the flue gas pipeline, be equipped with at least one induced air mechanism on the flue gas pipeline, induced air mechanism includes entry stator, draught fan body and export stator, follows the flue gas pipeline is established ties in proper order and is set up, induced air mechanism still includes the balance pipe, the balance pipe is used for the intercommunication export stator both sides. Because the outlet guide vane department at reserve induced draft mechanism is provided with the balance pipe for outlet guide vane both sides pressure can keep balance, avoids the draught fan to take place to overturn and causes the influence to the flue gas emission technology, owing to set up the balance pipe, the mode of the entry guide vane and the outlet guide vane of draught fan is opened to operating personnel's accessible, makes the flue gas gush into reserve draught fan in a large number, reduces row and congeals the operation number of times, reduces the consumption of manpower.
Description
Technical Field
The utility model relates to a chemical production equipment technical field, especially a boiler flue gas system and boiler thereof.
Background
The boiler burns and can not leave the flue gas system of boiler, and the draught fan is as boiler flue gas system's key equipment, is the important auxiliary engine that participates in the boiler burning, and the draught fan mainly bears the effect of overcoming flue resistance and discharging furnace flue gas and maintaining the interior negative pressure of stove, is the important guarantee of boiler normal operating. However, with normal operation time, the failure of the induced draft fan frequently occurs, which is mainly characterized in that smoke of the standby induced draft fan can not flow in a large quantity, the inlet and outlet valves are of a guide vane type, part of smoke enters the volute through the guide vane gap, when the temperature of the smoke in the volute is lower than the dew point temperature of the smoke, the smoke can be condensed into acid liquor, and if the smoke is not discharged in time, the acid liquor accumulates to cause corrosion of the volute and the impeller.
In order to prevent the corrosion of the accumulated liquid of the standby draught fan, the draught fan is generally provided with a condensation discharge opening, an operator regularly performs condensation discharge operation on the standby draught fan, however, for a boiler which operates at a low load or has a low exhaust gas temperature, the condensate is generated at a high speed, particularly in winter, condensation discharge operation needs to be performed for more than ten times every day, the burden of the operator is increased, sometimes, the accumulated liquid in the volute cannot be discharged due to the blockage of a condensation discharge pipe caused by the deposition of impurities in the flue gas, the falling of iron rust on an impeller under the action of centrifugal force and other reasons.
For reducing the production of acidizing fluid in the reserve induced draft fan, need open the entry stator and the export stator of reserve induced draft fan, make the flue gas can gush in reserve induced draft fan in a large number, but the flue gas gushes in reserve induced draft fan in export stator department, leads to the induced draft fan to take place to overturn easily, influences the normal emission of flue gas.
Therefore, a technical scheme is needed at present to solve the problem that smoke in a smoke pipeline can not rush into a spare induced draft fan in a large quantity, an inlet guide vane and an outlet guide vane of the spare induced draft fan are opened for reducing the generation of acid liquor, the induced draft fan is inverted easily, and the normal emission of the smoke is influenced.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: aiming at the technical problems that in the prior art, flue gas in a flue gas pipeline can not be greatly gushed into a standby draught fan, an inlet guide vane and an outlet guide vane of the standby draught fan are opened for reducing acid liquor, the draught fan is easily inverted, and the normal emission of the flue gas is influenced, the boiler flue gas system and the boiler thereof are provided.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a boiler flue gas system, includes the flue gas pipeline, be equipped with at least one induced air mechanism on the flue gas pipeline, induced air mechanism includes entry stator, draught fan body and export stator, follows the flue gas pipeline is the series connection setting in proper order, induced air mechanism still includes the balance pipe, the balance pipe is used for the intercommunication export stator both sides.
The utility model relates to a boiler induced draft pipeline, the flue gas can be in a large number gush into reserve induced draft fan behind the entry stator and the export stator of opening reserve draught fan, reduce the production of acidizing fluid in the induced draft fan, because be provided with balanced pipe in export stator department, make export stator both sides pressure can keep balance, avoid the draught fan to take place to overturn and cause the influence to the fume emission technology, owing to set up balanced pipe, the mode of entry stator and export stator of draught fan is opened to the operating personnel accessible, make the flue gas can gush into reserve draught fan in a large number, reduce and arrange the operation number of times of condensing, reduce the consumption of manpower.
As the utility model discloses a preferred scheme, the quantity of induced air mechanism is at least two, all induced air mechanism is in parallelly connected setting on the flue gas pipeline. The operation is switched to a plurality of induced draft mechanisms of being convenient for, is convenient for maintain the operation to reserve induced draft mechanism, when certain induced draft mechanism breaks down, also can ensure flue gas pipeline's normal operating through other induced draft mechanisms simultaneously.
As the utility model discloses a preferred scheme, flue gas pipeline includes that first person in charge and second are responsible for, first person in charge and second are responsible for between be provided with a plurality of branch pipes, every all be equipped with one on the branch pipe induced air mechanism. Each branch pipe is communicated with the first main pipe and the second main pipe respectively, so that the parallel arrangement of the air inducing mechanism on the flue gas pipeline is realized, and the switching operation can be carried out mutually.
As the utility model discloses an optimal scheme, induced air mechanism still includes the induced duct, the induced duct sets up in the export of draught fan body, the induced duct is used for connecting wind regime mechanism. The draught fan is characterized in that factory air can be introduced into an outlet of the draught fan body through the air induction pipe, the gas pressure of one side, close to the draught fan body, of the outlet guide vane is improved, the probability that the draught fan of the standby air induction mechanism is inverted is reduced, and the normal emission of smoke is ensured.
As the preferred scheme of the utility model, be equipped with the relief pressure valve on the induced duct. Because the mill production has generally been equipped with unified air feed mechanism, accessible pipeline intercommunication mill wind pipeline when corresponding equipment needs to use, for satisfying most of equipment demands, mill's wind pressure is higher, and the relief pressure valve can reduce the export pressure of import pressure to a certain needs to rely on the energy that the medium originally saved, make export pressure automatic remain stable valve, thereby be convenient for be applied to fan body exit with mill's wind, avoid the draught fan to take place to invert.
As the utility model discloses an optimized scheme, even there are a plurality of shunt tubess on the induced duct, the shunt tubess with induced air mechanism one-to-one sets up, every all be equipped with first shut-off valve on the shunt tubess. The induced duct of being convenient for is connected with a plurality of induced air mechanisms simultaneously, is convenient for when induced air mechanism switches the operation, and the induced duct is ventilated as reserve induced air mechanism, reduces the quantity that sets up of induced duct, reduces the degree of difficulty of induced air construction.
As the utility model discloses an optimal scheme, the cover is equipped with the heat preservation on the draught fan body shell. The heat loss of the draught fan body is reduced, so that the smoke can circulate in the draught fan body more easily, and the generation of condensate is reduced.
As the preferred scheme of the utility model, the heat preservation is the tinfoil paper layer. Tinfoil paper has good thermal insulation performance, can effectually promote the temperature of this internal flue gas of draught fan, and tinfoil paper heat-proof quality is good moreover, avoids staff direct contact draught fan this body to be scalded.
As the preferred scheme of the utility model, be equipped with the second on the balanced pipe and cut off the valve. When the induced draft mechanism normally operates, the second cut-off valve is cut off, so that the gas pressure difference on two sides of the outlet guide vane is ensured, and the operating efficiency of flue gas is improved.
The boiler comprises a boiler body, wherein the boiler body is connected with the boiler flue gas system.
The utility model relates to a boiler system links to each other the exhaust port of flue gas pipeline and boiler body, and the flue gas is when the export stator through reserve induced air mechanism in the flue gas pipeline, owing to be provided with the balance pipe in export stator department for export stator both sides pressure can keep balance, avoids the draught fan to take place to overturn and causes the influence to the fume emission technology.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. because the balance pipe is arranged at the outlet guide vane of the standby air inducing mechanism, the pressures at two sides of the outlet guide vane can be kept balanced, and the influence of the inversion of a draught fan on the flue gas emission process is avoided;
2. owing to set up the balance pipe, the mode of the entry stator of operating personnel accessible opening the draught fan and export the stator makes the flue gas gush reserve draught fan in a large number, reduces row and congeals the operation number of times, reduces the consumption of manpower.
Drawings
FIG. 1 is a schematic structural diagram of a boiler flue gas system according to the present invention in example 1;
FIG. 2 is a schematic structural diagram of a boiler flue gas system according to the present invention in example 2;
FIG. 3 is a schematic view of a boiler according to the present invention in example 3;
the mark in the figure is: 1-a flue gas pipeline, 11-a first main pipe, 12-a second main pipe, 13-a branch pipe, 2-an induced draft mechanism, 21-an inlet guide vane, 22-an induced draft fan body, 221-a heat insulation layer, 23-an outlet guide vane, 24-a balance pipe, 241-a first cut-off valve, 3-an induced draft pipe, 31-a pressure reducing valve, 32-a branch pipe, 33-a second cut-off valve and 4-a boiler body.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1, this embodiment boiler flue gas system, including flue gas pipeline 1, be equipped with at least one induced air mechanism 2 on the flue gas pipeline 1, induced air mechanism 2 includes entry stator 21, draught fan body 22 and export stator 23, follows flue gas pipeline 1 establishes ties in proper order and sets up, induced air mechanism 2 still includes balance pipe 24, balance pipe 24 is used for the intercommunication export stator 23 both sides.
The flue gas can gush in reserve draught fan body 2 in a large number after opening reserve draught fan body 22's entry stator 21 and export stator 23, reduce the production of acidizing fluid in the draught fan body 2, owing to be provided with balance pipe 24 in export stator 23 department, make export stator 23 both sides pressure can keep balance, avoid export stator 23 to take place to invert and cause the influence to the flue gas emission technology, owing to set up balance pipe 24, the mode of entry stator 21 and export stator 23 of draught fan is opened to the operating personnel accessible, make the flue gas can gush in reserve draught fan body 22 in a large number, reduce the row and congeal operation number, reduce the consumption of manpower.
Further, when the quantity of induced draft mechanism 2 is at least two, all induced draft mechanism 2 is in parallelly connected setting on the flue gas pipeline 1, the operation is switched over to a plurality of induced draft mechanisms 2 of being convenient for, is convenient for maintain the operation to reserve induced draft mechanism 2, when certain induced draft mechanism 2 broke down, also can guarantee the normal operating of flue gas pipeline 1 through other induced draft mechanisms 2 simultaneously.
Further, when the quantity of induced air mechanism 2 is three at least, all induced air mechanism 2 is in parallelly connected setting on the flue gas pipeline 1, not only can realize induced air mechanism 2's switching operation, can let two at least induced air mechanism 2 simultaneous workings moreover, reduce single induced air mechanism 2 load, promote fume emission efficiency.
Specifically, flue gas pipeline 1 includes that the first is responsible for 11 and the second is responsible for 12, the first is responsible for 11 and the second is responsible for and is provided with a plurality of branch pipes 13 between 12, every all be equipped with one on the branch pipe 13 induced air mechanism 2, every branch pipe 13 communicates the first main pipe 11 and the second is responsible for 12 respectively, has realized the parallelly connected setting of induced air mechanism 2 on flue gas pipeline 1, can switch the operation each other.
Furthermore, the casing of the induced draft fan body 22 is sleeved with the heat insulation layer 221, so that heat loss of the induced draft fan body 22 is reduced, smoke can circulate in the induced draft fan body 22 more easily, and condensate is reduced.
Specifically, heat preservation 221 is the tin foil ply, and the tin foil has good thermal insulation performance, can the effectual temperature that promotes the interior flue gas of draught fan body 22, and the tin foil heat-proof quality is good moreover, avoids staff direct contact draught fan body 22 to be scalded.
Further, the balance pipe 24 is provided with a second cut-off valve 241, so that when the induced draft mechanism 2 operates normally, the gas pressure difference between two sides of the outlet guide vane 23 is ensured by cutting off the second cut-off valve 241, and the operating efficiency of the flue gas is improved.
Example 2
As shown in fig. 2, in this embodiment, the difference from embodiment 1 is that the induced draft mechanism 2 further includes an induced draft pipe 3, the induced draft pipe 3 is connected to an outlet of the induced draft fan body 22, the induced draft pipe 3 is used for connecting an air source mechanism, and the air source mechanism is an air supply mechanism uniformly equipped for factory production.
In this embodiment, the induced draft tube 3 is arranged to introduce factory air to the outlet of the induced draft fan body 22, so that the gas pressure of the outlet guide vane 23 close to one side of the induced draft fan body 22 is increased, the probability of inversion of the outlet guide vane 23 of the standby induced draft mechanism 2 is reduced, and the normal emission of flue gas is ensured.
Further, be equipped with relief pressure valve 31 on induced duct 3, because factory's production has generally been equipped with unified air feed mechanism, accessible pipeline intercommunication factory's wind pipeline when corresponding equipment needs to use, for satisfying most of equipment demands, factory's wind pressure is higher, and relief pressure valve 31 can reduce the outlet pressure of import pressure to certain needs, and rely on the energy that the medium originally saved, make outlet pressure automatic remain stable valve, thereby be convenient for be applied to fan body exit with factory's wind, avoid export stator 23 to take place to invert.
Furthermore, there are a plurality of shunt tubes 32 connected to the induced duct 3, the shunt tubes 32 are in one-to-one correspondence with the induced draft mechanisms 2, and each shunt tube 32 is provided with a first cut-off valve 33, so that the induced duct 3 is connected to the plurality of induced draft mechanisms 2 at the same time, and when the induced draft mechanisms 2 perform switching operation, the induced duct 3 ventilates to the induced draft mechanisms 2 serving as a backup, thereby reducing the number of the induced ducts 3 and reducing the difficulty of induced draft construction.
Example 3
As shown in fig. 3, the present embodiment provides a boiler, which includes a boiler body 4, and a boiler flue gas system as described in embodiment 1 or embodiment 2 is connected to the boiler body 4.
During the use, flue gas pipeline 1 links to each other with the exhaust port of boiler body 4, and flue gas is in flue gas pipeline 1 when the export stator 23 of reserve induced air mechanism 2, owing to be provided with balance tube 24 in export stator 23 department for export stator 23 both sides pressure can keep balance, avoids export stator 23 to take place to overturn and causes the influence to the flue gas emission technology.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a boiler flue gas system, its characterized in that, includes flue gas pipeline (1), be equipped with at least one induced air mechanism (2) on flue gas pipeline (1), induced air mechanism (2) are followed flue gas pipeline (1) is established ties in proper order and is set up including entry stator (21), draught fan body (22) and export stator (23), induced air mechanism (2) still include balance pipe (24), balance pipe (24) are used for the intercommunication export stator (23) both sides.
2. The boiler flue gas system according to claim 1, wherein the number of the air inducing mechanisms (2) is at least two, and all the air inducing mechanisms (2) are arranged in parallel on the flue gas duct (1).
3. The boiler flue gas system according to claim 2, wherein the flue gas duct (1) comprises a first main pipe (11) and a second main pipe (12), a plurality of branch pipes (13) are arranged between the first main pipe (11) and the second main pipe (12), and each branch pipe (13) is provided with one air inducing mechanism (2).
4. The boiler flue gas system according to claim 1, wherein the induced draft mechanism (2) further comprises an induced draft pipe (3), the induced draft pipe (3) is arranged on an outlet of the induced draft fan body (22), and the induced draft pipe (3) is used for connecting an air source mechanism.
5. The boiler flue gas system according to claim 4, wherein the induced draft tube (3) is provided with a pressure reducing valve (31).
6. The boiler flue gas system according to claim 5, wherein a plurality of shunt tubes (32) are connected to the induced draft tube (3), the shunt tubes (32) are arranged in one-to-one correspondence with the induced draft mechanism (2), and each shunt tube (32) is provided with a first cut-off valve (33).
7. The boiler flue gas system according to claim 1, wherein an insulating layer (221) is sleeved on the outer shell of the induced draft fan body (22).
8. Boiler flue gas system according to claim 7, wherein the insulation layer (221) is a tin foil paper layer.
9. Boiler flue gas system according to any of claims 1 to 8, wherein the equalization pipe (24) is provided with a second shut-off valve (241).
10. A boiler, characterized in that it comprises a boiler body (4), said boiler body (4) being associated with a boiler flue gas system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387502.7U CN217928852U (en) | 2022-09-08 | 2022-09-08 | Boiler flue gas system and boiler thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222387502.7U CN217928852U (en) | 2022-09-08 | 2022-09-08 | Boiler flue gas system and boiler thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217928852U true CN217928852U (en) | 2022-11-29 |
Family
ID=84174452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222387502.7U Active CN217928852U (en) | 2022-09-08 | 2022-09-08 | Boiler flue gas system and boiler thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217928852U (en) |
-
2022
- 2022-09-08 CN CN202222387502.7U patent/CN217928852U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217928852U (en) | Boiler flue gas system and boiler thereof | |
| CN205245116U (en) | Compressor station residual heat from flue gas system | |
| CN106594766A (en) | 2.5 room RTO heat-accumulating type oxidizing system for Vocs treatment | |
| CN213840940U (en) | Energy-saving induced-draft cooling system for furnace wall of garbage incinerator | |
| CN217082613U (en) | System for treating blockage of air preheater and reducing flue pressure | |
| CN109813130A (en) | A kind of heat recovery coke oven high-temperature flue gas system | |
| CN204901735U (en) | Heat exchanger boiler waste heat utilization economizer | |
| CN210934342U (en) | Tail flue gas treatment device of natural gas industrial boiler | |
| CN210688197U (en) | Symmetrical full-heat-storage combustion system | |
| CN209763048U (en) | Graded heat accumulating type heating furnace | |
| CN209909952U (en) | Full operating mode flue gas denitration and air preheater prevent stifled system | |
| CN208171046U (en) | A kind of blowback system based on heat storage type combustion | |
| CN111992026A (en) | Denitration double-reactor arrangement method and system for realizing online switching | |
| CN215864638U (en) | Sintering system | |
| CN219264334U (en) | Device for preventing low-temperature condensation of boiler tail equipment flue | |
| CN217737244U (en) | Smoke and steam white-removing auxiliary steam recycling system | |
| CN212644668U (en) | Energy-saving boiler shutdown system | |
| CN221217826U (en) | Blast furnace heating system | |
| CN220083710U (en) | Heat recovery system for oven | |
| CN214332771U (en) | Multi-stage waste heat utilization system for industrial boiler | |
| CN220038449U (en) | Heating furnace capable of independently controlling burner and reducing CO emission | |
| CN217635583U (en) | System for realizing waste heat recovery by adopting combined air heater | |
| CN216844640U (en) | System for reducing exhaust gas temperature of blast furnace gas boiler | |
| CN210772276U (en) | Zero leakage system of flue butterfly valve | |
| CN114777334B (en) | Combined gas heating system and heating method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |