CN106438464A - Urea pyrolysis ultrahigh fan - Google Patents
Urea pyrolysis ultrahigh fan Download PDFInfo
- Publication number
- CN106438464A CN106438464A CN201610770420.7A CN201610770420A CN106438464A CN 106438464 A CN106438464 A CN 106438464A CN 201610770420 A CN201610770420 A CN 201610770420A CN 106438464 A CN106438464 A CN 106438464A
- Authority
- CN
- China
- Prior art keywords
- casing
- sealing
- urea pyrolysis
- fan
- blower fan
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/041—Axial thrust balancing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5846—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling by injection
Abstract
The invention relates to the technical field of fans, in particular to a urea pyrolysis ultrahigh fan with working temperature being 650 DEG C and highest temperature resistance to 800 DEG C. The urea pyrolysis ultrahigh fan comprises a spindle, two bearing boxes arranged at the two ends of the spindle, an impeller group and a casing; the impeller group and the casing are arranged on the spindle; the bearing boxes are arranged on a base; the impeller group is arranged in the casing and is composed of two impellers which are installed back to back; the casing is provided with an air inlet channel and an air outlet channel; and two sealing cooling components are arranged on the two sides of the casing respectively and sleeve the spindle. According to the urea pyrolysis ultrahigh fan, the impellers of the fan adopts a back-to-back mounting mode, thus the axial acting force applied to a bearing by the spindle can be eliminated, and the service life of the bearing is prolonged; and the sealing cooling components arranged on the two sides of the fan casing respectively seal and cool the casing and the spindle, thus the sealing and cooling effects of the fan are good, the problems that high-temperature flue gas leaks and the high-temperature spindle is cooled can be effectively solved, and normal running of the fan at high temperature is guaranteed.
Description
Technical field
The present invention relates to blower fan technical field, particularly to a kind of operating temperature 650 DEG C, highest can 800 DEG C of heatproof
Urea pyrolysis superhigh temperature blower fan.
Background technology
At present, in high-temperature centrifugal fan technical field, the operating temperature of blower fan generally at 300 DEG C about, such as coal fired power generation
The operating temperature of denitration system of power plant high temperature blower fan at 300 DEG C～350 DEG C, but this high-temperature blower be difficult to be applied to higher
Operating temperature.Fan industry at home, operating temperature at 650 DEG C, pressure reach 10kPa and more than, air quantity is in 1500Nm3/ h and
The application demand of following small flow high pressure power superhigh-temperature and-pressure blower fan is increasing；But at present, domestic this superhigh temperature blower fan
The urea pyrolysis system of gas engine thermoelectricity F level unit equipment for denitrifying flue gas is applied also beyond example, and domestic current application
Gas engine thermoelectricity F level unit all use external introduce technology and equipment, and the blower fan supporting with it also only has state's outgoing
Reach country can produce, lead to production, maintenance cost cycle to remain high, and often maintenance cycle cannot be guaranteed.
Content of the invention
The purpose of the present invention can be used for urea pyrolysis system in gas engine thermoelectricity F level unit equipment for denitrifying flue gas in offer one kind
The urea pyrolysis superhigh temperature blower fan of system, its operating temperature is 650 DEG C, and highest is resistant to 800 DEG C of high temperature, realizes adding of high-temperature flue gas
Pressure conveying, and ensure that high-temperature flue gas are not revealed, main shaft upper bearing (metal) position good cooling results.
For solving above-mentioned technical problem, present invention employs technical scheme below：
Urea pyrolysis superhigh temperature blower fan, the bearing housing including main shaft, being arranged on main shaft two ends, the impeller being arranged on main shaft
Group and casing, described bearing housing is arranged on base, and described impeller sets are arranged in casing, and impeller sets include two and pacify back-to-back
The impeller of dress, casing is provided with air intake passage and air-out passage, and described casing both sides are provided with sealing cooling assembly, sealing
Cooling assembly is set on main shaft.
In technique scheme, further, described sealing cooling assembly includes the sealing coolant jacket being arranged on main shaft,
It is provided with sealing axle sleeve on described main shaft, cooperation composition labyrinth seal between described sealing coolant jacket and sealing axle sleeve, sealing is cold
But it is provided with compressed air channel, cooling water inlet, coolant outlet and cooling water circulation chamber, sealing coolant jacket and casing in set
It is provided with multiple seal grooves for installing sealing ring on one end end face of cooperation.
In technique scheme, further, between one end end face of described sealing coolant jacket and casing cooperation and casing
It is provided with certain gap, the seal face of sealing coolant jacket is provided with for this gap sealed sealing ring.
In technique scheme, further, described sealing coolant jacket inwall arranges multiple cannelures, described cannelure
Cooperatively form labyrinth seal with sealing axle sleeve outer wall.
In technique scheme, further, described sealing cooling assembly also includes being arranged on outside sealing coolant jacket
Heat dissipation plate, described heat dissipation plate is set on main shaft, and heat dissipation plate is provided with radiating fin.
In technique scheme, further, it is provided with left chamber and right chamber room, two impeller positions respectively in described casing
Indoor in left chamber and right chamber, it is provided with interface channel between described left chamber and right chamber room, described left chamber connects air intake and leads to
Road, right chamber room connects air-out passage.
In technique scheme, further, described casing includes upper casing and lower casing, the knot of upper casing and lower casing
Close and be provided with ring flange on end face, connected by ring flange between upper casing and lower casing, base is provided with support base, institute
State casing to be fixedly mounted on support base by ring flange.
The present invention is had the advantage that：
1) impeller of blower fan adopts back-to-back mounting means, and two impellers are when rotated to axial force produced by main shaft
Size is identical, in opposite direction, and both cancel out each other, thus eliminating the axial force that main shaft acts on bearing, extends axle
The service life held；The left and right chamber of connection is set in casing simultaneously, it is ensured that pressure while realizing the pressurization of impeller two-stage
Stability in transmitting procedure, reduces pressure damage.In addition, the impeller in this blower fan is arranged back-to-back, the air inlet of impeller
Respectively towards the sealed end setting of casing, it is the inlet end of impeller now close to casing sealing end, compared to the conventional fan middle period
Take turns the structure being arranged side by side, the pressure of high-temperature flue gas at casing both sides sealing assembly can be reduced, so that black box can be more preferably
Ground seals to main shaft and casing, it is to avoid the leakage of high-temperature flue gas.
2) in fan casing both sides setting sealing cooling assembly, casing and main shaft are sealed and cooled down, close using labyrinth
Seal the combination sealing mode combining with compressed air sealing, efficiently solve the problems, such as that high-temperature flue gas are revealed.Blower fan sealing, cold
But effect is good, can reveal the problem cooling down with high temperature main shaft by effectively solving high-temperature flue gas, can be by the temperature at main shaft upper bearing (metal) position
Degree is down to less than 60 DEG C it is ensured that blower fan normal operation at high temperature.
3) in the fixation of fan casing by the way of its center is supported, solve traditional bottom supporting way and deposit
High temperature casing expand impact to sealing performance, during using being supported to casing center, the upper casing of casing and under
Casing respectively to casing center the direction of both sides up and down expand, thus not sealing is impacted it is ensured that blower fan close
Sealing property.
Brief description
Fig. 1 is present configuration schematic diagram.
Fig. 2 is to seal cooling element structure schematic diagram in the present invention.
Fig. 3 flows to schematic diagram for high temperature flue gas of the present invention in casing.
Fig. 4 is present configuration left view.
In figure：1st, main shaft, 2, bearing housing, 3, casing, 31, upper casing, 32, lower casing, 33, ring flange, 34, left chamber,
35th, right chamber room, 36, interface channel, 4, impeller, 5, air intake passage, 6, air-out passage, 7, sealing coolant jacket, 8, sealing axle sleeve, 9,
Compressed air channel, 10, cooling water inlet, 11, coolant outlet, 12, cooling water circulation chamber, 13, seal groove, 14, sealing ring,
15th, cannelure, 16, heat dissipation plate, 17, radiating fin, 18, base, 19, support base.
Specific embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings.
Urea pyrolysis superhigh temperature blower fan in the present invention, such as Fig. 1, including main shaft 1, the bearing housing that is arranged on main shaft 1 two ends
2nd, it is arranged on the impeller sets on main shaft 1 and casing 3, bearing housing 2 is arranged on base 18, impeller sets are arranged in casing 3, impeller
Group includes two impellers 4 installed back-to-back, casing 3 is provided with air intake passage 5 and air-out passage 6, casing 3 both sides are respectively provided with
There is sealing cooling assembly, sealing cooling assembly is set on main shaft 1 and main shaft is sealed and cools down.
The impeller 4 of blower fan adopts back-to-back mounting means, and two impellers 4 are when rotated to axial direction produced by main shaft 1
Power size is identical, in opposite direction, and both cancel out each other, thus eliminating the axial force that main shaft acts on bearing, extends
The service life of bearing.
The operating temperature of urea pyrolysis superhigh temperature blower fan of the present invention is 650 DEG C, and highest can 800 DEG C of heatproof.Through heat-insulated, fall
After temperature, cooling measure, blower housing temperature is less than 70 DEG C, and main shaft exposed parts temperature is less than 60 DEG C, can guarantee that the safety of blower fan
Run and patrol and examine, high-temperature flue gas take urea pyrolysis ammonification to gas fired-boiler after blower fan is pressed and delivered to urea pyrolysis stove
So that boiler smoke reaches atmosphere pollutants emission standardses in total flue gas.Atmosphere pollution in GB13271-2014 is especially arranged
Putting limit value requirement is：Nitrogen oxides≤200mg/Nm3, and actual nitrogen oxides in effluent is 25～30mg/Nm3 after treatment.
Recirculated cooling water and compressed air, recirculated cooling water and compressed air is only needed to share with power plant's other equipment during fan operation,
Need not be equipped with exclusively for blower fan, reduce coordinative composition of equipments cost.
Low using urea pyrolysis superhigh temperature blower fan cost of investment and operating cost, directly high-temperature flue gas are processed, such as
The conventional blower fan of fruit passes through the flue gas of pressurized delivered normal temperature, then the temperature reaching 650 DEG C through electric heater heating is accomplished by
1000KW about electric heater heating, then daily 2.4 ten thousand degree of power consumption, and use urea pyrolysis superhigh temperature blower fan of the present invention every
It then only need to greatly save fume treatment cost less than 800 degree of electricity.
As Fig. 2, in the present embodiment, sealing cooling assembly includes the sealing coolant jacket 7 being arranged on main shaft 1, and this sealing is cold
But set 7 can simultaneously work as the function of sealing and cool down, and main shaft 1 is provided with sealing axle sleeve 8, sealing coolant jacket 7 and sealing axle sleeve 8
Between cooperation composition labyrinth seal, this labyrinth seal be sealing coolant jacket 7 inwall on arrange multiple width be 10～15mm ring
Shape groove 15, is cooperatively formed with sealing axle sleeve 8 outer wall by cannelure 15.It is provided with compressed air channel 9 in sealing coolant jacket 7,
Compressed air channel 9 porch arranges compressed air interface, and the compressed air interface of compressed air enters compressed air channel 9,
Compressed air channel 9 connects labyrinth seal, and the outlet of compressed air channel 9 is located at the centre position of labyrinth seal, by compression
The sealing to main shaft is realized in air and labyrinth seal simultaneously, prevents the leakage of high-temperature flue gas.
In the present embodiment, sealing coolant jacket 7 and casing 3 cooperation one end end face and casing 3 between be provided with certain between
Gap, for absorbing fan casing 3 thermal expansion at high temperature.Sealing coolant jacket 7 one end end face sets gradually from outside to inside
There are three seal grooves 13 for installing sealing ring 14, sealing ring 14 is installed in seal groove 13, this sealing ring 14 adopts resistance to height
The asbestos packing of temperature, it is ensured that the end face seal performance of sealing coolant jacket, can achieve to gap between sealing coolant jacket and casing
Sealing.
Sealing coolant jacket 7 is additionally provided with cooling water inlet 10, coolant outlet 11 and cooling water circulation chamber 12, cold
But lead to recirculated cooling water in water circulation chamber 12, coolant outlet 11 and cooling water inlet 10 connect cooling water tank respectively, thus real
Now the cooling to main shaft 1, also a saving water resource simultaneously, and cooling water will not leak.
It is respectively provided with heat dissipation plate 16 outside sealing cooling assembly, heat dissipation plate 16 is provided with radiating fin 17；This radiating
Disk 16 further can be cooled down to main shaft 1, and after dual-cooled is processed, the temperature of main shaft upper bearing (metal) installed position can
It is down to less than 60 DEG C, thus ensureing the normal operation of fan bearing.
As Fig. 1, in the present embodiment, in described casing 3, it is provided with left chamber 34 and right chamber room 35, two impeller 4 positions respectively
In left chamber 34 and right chamber room 35, between left chamber 34 and right chamber room 35, be provided with interface channel 36, left chamber 34 connect into
Wind passage 5, right chamber room 35 connects air-out passage 6.As Fig. 3, left chamber 34 air inlet is equipped with the air inlet of left side impeller,
Left chamber 34 gas outlet connection interface channel 36, interface channel 36 connection right chamber room 35 air inlet, right chamber room 35 air inlet and the right side
The air inlet of lateral lobe wheel is equipped with, and right chamber room 35 gas outlet connects air-out passage 6.
In the present embodiment, such as Fig. 4, casing 3 includes upper casing 31 and lower casing 32, the combination of upper casing 31 and lower casing 32
Ring flange 33 is provided with end face, is connected by ring flange 33 between upper casing 31 and lower casing 32, between two ring flanges 33
It is bolted to connection, support base 19 is provided with the base 18 of blower fan, casing 3 is fixedly mounted on by ring flange 33 and props up
On support seat 19, realize the support to casing center.By the way of casing center is supported, solves traditional bottom and support
High temperature casing that mode exists expands the impact to sealing performance, when casing center is supported, the upper casing of casing and
Lower casing expands to the direction of both sides up and down at casing center respectively, thus not impact it is ensured that wind to shaft seal clearance
The sealing property of machine.
The specification and drawings of the present invention are considered as illustrative and not restrictive, in technical side disclosed by the invention
On the basis of case, those skilled in the art is according to disclosed technology contents it is not necessary to performing creative labour just can be to it
In some technical characteristics make some replace and deform, these replace and deformation all within the scope of the present invention.
Claims (7)
1. urea pyrolysis superhigh temperature blower fan it is characterised in that：The bearing housing that including main shaft, is arranged on main shaft two ends, it is arranged on master
Impeller sets on axle and casing, described bearing housing is arranged on base, and described impeller sets are arranged in casing, and impeller sets include two
The impeller of individual back-to-back installation, casing is provided with air intake passage and air-out passage, and it is cold that described casing both sides are provided with sealing
But assembly, sealing cooling assembly is set on main shaft.
2. urea pyrolysis superhigh temperature blower fan according to claim 1 it is characterised in that：Described sealing cooling assembly includes setting
Put the sealing coolant jacket on main shaft, described main shaft is provided with sealing axle sleeve, between described sealing coolant jacket and sealing axle sleeve
Cooperation composition labyrinth seal, is provided with compressed air channel, cooling water inlet, coolant outlet and cooling water in sealing coolant jacket
Torus, sealing coolant jacket and one end end face of casing cooperation are provided with multiple seal grooves for installing sealing ring.
3. urea pyrolysis superhigh temperature blower fan according to claim 2 it is characterised in that：Described sealing coolant jacket is joined with casing
It is provided with certain gap between one end end face closing and casing, the seal face of sealing coolant jacket is provided with for this
The sealing ring of gap sealing.
4. urea pyrolysis superhigh temperature blower fan according to claim 2 it is characterised in that：Set on described sealing coolant jacket inwall
Put multiple cannelures, described cannelure and sealing axle sleeve outer wall cooperatively form labyrinth seal.
5. urea pyrolysis superhigh temperature blower fan according to claim 2 it is characterised in that：Described sealing cooling assembly also includes
It is arranged on the heat dissipation plate outside sealing coolant jacket, described heat dissipation plate is set on main shaft, and heat dissipation plate is provided with radiating fin.
6. urea pyrolysis superhigh temperature blower fan according to claim 1 it is characterised in that：It is provided with left chamber in described casing
With right chamber room, two impellers are located at left chamber respectively and right chamber is indoor, are provided with connection logical between described left chamber and right chamber room
Road, described left chamber connects air intake passage, and right chamber room connects air-out passage.
7. urea pyrolysis superhigh temperature blower fan according to claim 1 it is characterised in that：Described casing include upper casing and under
The combination end face of casing, upper casing and lower casing is located at the horizontal plane of main-shaft axis, on the combination end face of upper casing and lower casing
It is provided with ring flange, is connected by ring flange between upper casing and lower casing, base is provided with support base, described casing leads to
Cross ring flange to be fixedly mounted on support base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770420.7A CN106438464A (en) | 2016-08-30 | 2016-08-30 | Urea pyrolysis ultrahigh fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770420.7A CN106438464A (en) | 2016-08-30 | 2016-08-30 | Urea pyrolysis ultrahigh fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438464A true CN106438464A (en) | 2017-02-22 |
Family
ID=58091172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610770420.7A Pending CN106438464A (en) | 2016-08-30 | 2016-08-30 | Urea pyrolysis ultrahigh fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438464A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198340A (en) * | 2021-11-24 | 2022-03-18 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
| CN114576208A (en) * | 2022-03-16 | 2022-06-03 | 重庆水泵厂有限责任公司 | High-temperature pump cooling structure |
-
2016
- 2016-08-30 CN CN201610770420.7A patent/CN106438464A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198340A (en) * | 2021-11-24 | 2022-03-18 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
| CN114198340B (en) * | 2021-11-24 | 2023-01-20 | 华能重庆两江燃机发电有限责任公司 | SCR dilution fan that can start fast |
| CN114576208A (en) * | 2022-03-16 | 2022-06-03 | 重庆水泵厂有限责任公司 | High-temperature pump cooling structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170222 |