CN103850985B - A kind of blower fan using casing heat tracing and sealing cushion gas heating - Google Patents
A kind of blower fan using casing heat tracing and sealing cushion gas heating Download PDFInfo
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- CN103850985B CN103850985B CN201410106311.6A CN201410106311A CN103850985B CN 103850985 B CN103850985 B CN 103850985B CN 201410106311 A CN201410106311 A CN 201410106311A CN 103850985 B CN103850985 B CN 103850985B
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Abstract
The invention discloses a kind of blower fan using casing heat tracing and sealing cushion gas heating, including casing and penetrate the main shaft in casing, it is characterized in that, described main-axis end is connected by carbon ring seal device with casing, the outer wall of described casing is provided with the heater to casing heating, is filled with the loading line of cushion gas to ring packing cavity and is provided with the gas heater to buffer gas heating in described carbon ring seal device.Casing of the present invention uses the heating of heat tracing resistance, does not produce the temperature difference inside and outside casing, does not has condensation cannot form olefin(e) acid, extends the service life of complete blower, and flow passage components do not have corrosivity risk in guaranteeing fan operation life cycle.
Description
Technical field
The present invention relates to blower fan, specifically a kind of employing casing heat tracing and sealing cushion gas heat to extend it
The SO in life-span3High temperature circulation blower fan.
Background technology
" double sudden strain of a muscle " (flash smelting FSF and flash blowing FCF) Copper making process is to carry out in closed environment,
Thus the SO produced2Concentration is higher, if using traditional SO2Relieving haperacidity transformation technology need to add substantial amounts of dilution wind
SO2Concentration dilution, to 12%, so causes follow-up equipment scale big, and cost of investment rises.High concentration SO2
Relieving haperacidity transformation technology is the most state-of-the-art current flue gas acid preparing technology, and this technology is at extensive copper blast furnace off-gas
Acid making system is also first Application, wherein SO3High temperature circulation blower fan is one of key equipment in this set technique.
Pass through SO3High temperature circulation blower fan extraction technique flue gas recirculation, it is ensured that this technique can directly process SO2Concentration
The flue gas of up to 16%.SO3The working media of high temperature circulation blower fan conveying is SO3+SO2+ air+trace catalyst
Powder, inlet temperature 280 DEG C (380 DEG C in short-term).
Generally SO in flue gas acid preparing system flue gas3+SO2Concentration about 5%, SO3SO in high temperature circulation blower fan flue gas3
+SO2Concentration >=15% (volume ratio) is far above 5%, and temperature about 280～350 DEG C, far above general SO3High temperature follows
150 DEG C of ring blower fan.The corrosivity of high temperature and gas medium is SO3During high temperature circulation fan operation two
Very unfavorable factor.
Existing fan casing part directly contacts with external environment, and fan casing temperature is on the low side, and conveying gas is situated between
The high temperature of matter and the temperature difference of environment, produce condensation at shell body sidewall, condenses water and high concentration SO3And SO2
Gas generates diluted acid, thus corrodes the flow passage components of blower fan.Accordingly, it would be desirable to take corresponding technical measures to guarantee
Manufacturing technique requirent and the safe operation of blower fan, extend the service life of complete blower.
Summary of the invention
The weak point that the present invention exists in order to avoid prior art, it is provided that a kind of employing casing heat tracing and sealing are slow
The blower fan of qi of chong channel ascending adversely heating, to extend the service life of complete blower.
The present invention solves technical problem and adopts the following technical scheme that
A kind of blower fan using casing heat tracing and sealing cushion gas heating, including casing and penetrate the master in casing
Axle, its design feature is, described main-axis end is connected by carbon ring seal device with casing, described casing
Outer wall is provided with the heater to casing heating, is filled with buffering to ring packing cavity in described carbon ring seal device
The loading line of gas is provided with the gas heater to buffer gas heating.
Present configuration feature also resides in:
Described heater is the heat tracing resistance being laid on Fan casing lateral wall.
Described Fan casing outer wall is provided with heat-resistant insulation material layer, and described heat tracing resistance is located at Fan casing outer wall and insulation
Between material layer.
Described Fan casing lateral wall, carbon ring seal device sealing at be laid with temperature sensor.
A kind of blower fan heating means using casing heat tracing and sealing cushion gas heating, its feature is: by companion
Fan casing is heated and is incubated by thermal resistance, by the gas heater annular to entering carbon ring seal device
The buffer gas sealed in cavity heats, and measures casing in real time by temperature sensor and seal cushion gas
Temperature, it is ensured that Blower Housing temperature under fan operation or parking condition between 250-280 DEG C；Enter close
The cushion gas temperature of envelope is between l5O-180 DEG C.
Compared with the prior art, the present invention has the beneficial effect that:
(1) cost-effective
SO3And SO2Gas is met water and is formed sulfuric acid and sulfurous acid respectively, and both acid all has stronger corrosivity,
Under the washing away of High Temperature And Velocity air-flow, the corrosivity to metal material is higher.In alloy only high-alloy stainless steel,
Nickel molybdenum and nickel molybdenum evanohm, gold, platinum, barium etc. are resistant to the corrosion of high-temperature sulfuric acid, and these metal materials are the most high
Expensive.Casing uses the heating of heat tracing resistance, does not produce the temperature difference, do not have condensation cannot form olefin(e) acid, really inside and outside casing
In protecting fan operation life cycle, flow passage components do not have corrosivity risk, and housing can be selected for carbon steel or 304 stainless steels
Material, less expensive.
(2) safe and reliable
Internal side of shell face line with rubber is a kind of more conventional method of blower fan corrosion-resistant.But due to SO3High temperature circulation wind
Machine pumped (conveying) medium temperature is high, and line with rubber has high temperature ageing and the risk come off, and there is potential safety hazard.Heat tracing resistance applies
Being located at the lateral surface of casing, reliability is high；Fan casing can not use line with rubber anticorrosion.
(3) shaft end seal No leakage
SO3High temperature circulation blower fan is high temperature, high concentration SO due to the working media that blower fan carries2+SO3And containing micro-
The catalyst dust of amount, shaft end seal is all required the harshest by these factors.Standard machinery seals, because cooling is asked
Topic (uses water as coolant easily and SO3+SO2Formed acid, make coolant with oil inflammable) and dust existence be difficult to be suitable for,
SO3High temperature circulation blower fan uses carbocyclic ring+cushion gas combination sealing pattern.Sealing cushion gas is heated to temperature and is not less than
150 DEG C, can effectively prevent blower fan working media condensation from forming into acid, catalyst powder is dilute with what working media condensation became
Acid forms acid mud entrance and divides between annulus, holddown spring, makes seal failure.Guarantee shaft end seal No leakage.
Accompanying drawing explanation
Fig. 1 is blower fan overall structure schematic diagram of the present invention.
Fig. 2 is that the present invention is provided with the Fan casing adding thermal resistance.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is the B direction view of Fig. 3.
Label in figure: 1 fan casing, 2 carbon ring seal devices, 3 motors, 4 shaft couplings, 5 bearing housings, 6 protection
Cover, 7 bases, 8 heat tracing resistance, 9 adiabator layers, 10 shell temperature platinum resistance thermometers, 11 sealings are delayed
Qi of chong channel ascending adversely gas heater, 12 sealing cushion gas filters, 13 sealing cushion gas pressure-reducing valves, 14 sealing cushion gases
Flowmeter, 15 seal cushion gas platinum resistance thermometers, 16 restricting orifices, 17 seal front buffer atmospheric pressure tables,
18 seal back buffer atmospheric pressure table.
Detailed description of the invention
By detailed description of the invention, technical solution of the present invention is further explained explanation below in conjunction with accompanying drawing.
As it is shown in figure 1, SO3High temperature circulation blower fan includes Fan casing 1, the main shaft penetrating in Fan casing and driving
Mechanism, main-axis end is connected by carbon ring seal device 2 with casing, and drive mechanism includes that motor 3, diaphragm type join
The structure compositions such as axial organ 4, solid box case 5, diaphragm type draft gage are externally provided with protective cover 6, and whole blower fan fills
Put and be fixed on base 7.In order to realize heating and thermal insulation, it is simultaneously provided with the resistance to of about 200mm thickness at Fan casing outer wall
Hot adiabator layer 9.Wherein carbon ring seal device is filled with on the loading line of cushion gas to ring packing cavity
Being provided with the gas heater 11 to buffer gas heating, cushion gas is compressed air, by filter 12, decompression
Valve 13, flowmeter 14 enter gas heater 11.
As in figure 2 it is shown, be also evenly equipped with the heat tracing resistance 8 for casing heating, heat tracing resistance on the outer wall of casing
It is located between Fan casing outer wall and adiabator layer.Shell temperature is shown in Fig. 1 by platinum resistance thermometer 10() survey
Amount, and the start and stop of heat tracing resistance are determined according to real-time measurement values.
As it is shown on figure 3, the cushion gas temperature after Jia Re is measured by platinum resistance thermometer 15, and according to surveying in real time
Value determines the input of gas heater power.
As shown in Figure 4, seal cushion gas and be divided into preposition and rearmounted two strands of gas to respectively enter sealing device 2 cavity, front
Putting cushion gas to be reduced pressure by restricting orifice 16, pressure is shown by Pressure gauge 17；Back buffer atmospheric pressure is by Pressure gauge
18 displays.
Apparatus of the present invention operation principle is as follows:
By heat tracing resistance fan casing heated and be incubated, by gas heater to entering carbon ring seal
Buffer gas in the ring packing cavity of device heats, and by temperature sensor measure in real time casing and
Seal cushion gas temperature, it is ensured that Blower Housing temperature under fan operation or parking condition 250-280 DEG C it
Between；Enter the cushion gas temperature sealed between l5O-180 DEG C.
Claims (2)
1. one kind uses casing heat tracing and seals the blower fan of cushion gas heating, including casing and penetrate the main shaft in casing, it is characterized in that, described main-axis end is connected by carbon ring seal device with casing, the outer wall of described casing is provided with the heater to casing heating, is filled with the loading line of cushion gas to ring packing cavity and is provided with the gas heater to buffer gas heating in described carbon ring seal device；
Described heater is the heat tracing resistance being laid on Fan casing lateral wall；
Described Fan casing outer wall is provided with heat-resistant insulation material layer, and described heat tracing resistance is located between Fan casing outer wall and adiabator layer；
Described Fan casing lateral wall, carbon ring seal device sealing at be evenly equipped with temperature sensor.
A kind of blower fan heating means using casing heat tracing and sealing cushion gas heating the most according to claim 1, it is characterized in that: by heat tracing resistance fan casing heated and be incubated, by gas heater, the buffer gas in the ring packing cavity entering carbon ring seal device is heated, and by temperature sensor measure in real time casing and seal cushion gas temperature, it is ensured that Blower Housing temperature under fan operation or parking condition between 250-280 DEG C；Enter the cushion gas temperature sealed between l50-180 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410106311.6A CN103850985B (en) | 2014-03-20 | 2014-03-20 | A kind of blower fan using casing heat tracing and sealing cushion gas heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410106311.6A CN103850985B (en) | 2014-03-20 | 2014-03-20 | A kind of blower fan using casing heat tracing and sealing cushion gas heating |
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| CN103850985A CN103850985A (en) | 2014-06-11 |
| CN103850985B true CN103850985B (en) | 2016-08-17 |
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| CN201410106311.6A Active CN103850985B (en) | 2014-03-20 | 2014-03-20 | A kind of blower fan using casing heat tracing and sealing cushion gas heating |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323910A (en) * | 2021-06-17 | 2021-08-31 | 光大环境科技（中国）有限公司 | Shaft seal system of exhaust-heat boiler flue gas circulation fan |
| CN113606159A (en) * | 2021-07-02 | 2021-11-05 | 光大环境科技（中国）有限公司 | Fully-sealed fan for flue gas recirculation and sealing monitoring method |
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|---|---|---|---|---|
| CN1279359A (en) * | 2000-04-13 | 2001-01-10 | 丁震华 | Boosting centrifugal blower for delivering hot gas and its sealing method |
| CN201526497U (en) * | 2009-10-19 | 2010-07-14 | 上虞市金泰风机有限公司 | Gas sealing chamber for a hot gas circulation blower |
| CN103382948A (en) * | 2013-06-17 | 2013-11-06 | 余姚风机总厂 | Air blower facilitating heat dissipation |
| CN203362593U (en) * | 2013-07-03 | 2013-12-25 | 陕西渭河煤化工集团有限责任公司 | Heat-preserving dry-gas sealing device for compressor containing ammonia gas medium |
| CN203822711U (en) * | 2014-03-20 | 2014-09-10 | 合肥通用机械研究院 | Fan adopting heat tracing of casing and heating of sealing cushion gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101044593B1 (en) * | 2010-06-30 | 2011-06-29 | (주)삼원이앤비 | Blower for high temperature clean gas supply |
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2014
- 2014-03-20 CN CN201410106311.6A patent/CN103850985B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1279359A (en) * | 2000-04-13 | 2001-01-10 | 丁震华 | Boosting centrifugal blower for delivering hot gas and its sealing method |
| CN201526497U (en) * | 2009-10-19 | 2010-07-14 | 上虞市金泰风机有限公司 | Gas sealing chamber for a hot gas circulation blower |
| CN103382948A (en) * | 2013-06-17 | 2013-11-06 | 余姚风机总厂 | Air blower facilitating heat dissipation |
| CN203362593U (en) * | 2013-07-03 | 2013-12-25 | 陕西渭河煤化工集团有限责任公司 | Heat-preserving dry-gas sealing device for compressor containing ammonia gas medium |
| CN203822711U (en) * | 2014-03-20 | 2014-09-10 | 合肥通用机械研究院 | Fan adopting heat tracing of casing and heating of sealing cushion gas |
Non-Patent Citations (1)
| Title |
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| 高温高浓度S03风机技术关键及国产化分析;胡松等;《流体机械》;20090731;第37卷(第7期);45-48 * |
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| CN103850985A (en) | 2014-06-11 |
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Inventor after: Xu Jian Inventor after: Huang Wenjun Inventor after: Mou Jieyang Inventor after: Yuan Hao Inventor after: Chen Qiming Inventor after: Qian Yong Inventor after: Dong Fan Inventor after: Chen Sheng Inventor after: Chang Chao Inventor after: Tian Qiyong Inventor after: Hu Sibing Inventor after: Rao Jie Inventor before: Chen Qiming Inventor before: Mou Jieyang Inventor before: Yuan Hao Inventor before: Qian Yong Inventor before: Dong Fan Inventor before: Chen Sheng Inventor before: Chang Chao Inventor before: Tian Qiyong Inventor before: Hu Sibing Inventor before: Rao Jie Inventor before: Huang Wenjun |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee after: HEFEI GENERAL MACHINERY RESEARCH INSTITUTE Co.,Ltd. Patentee after: Hefei General Environmental Control Technology Co., Ltd Address before: 230031 No. 888 Changjiang West Road, Shushan District, Anhui, Hefei Patentee before: HEFEI GENERAL MACHINERY Research Institute Patentee before: Hefei General Environmental Control Technology Co., Ltd |