CN103850985A - Fan adopting shell heat tracing and sealed buffer gas heating - Google Patents
Fan adopting shell heat tracing and sealed buffer gas heating Download PDFInfo
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- CN103850985A CN103850985A CN201410106311.6A CN201410106311A CN103850985A CN 103850985 A CN103850985 A CN 103850985A CN 201410106311 A CN201410106311 A CN 201410106311A CN 103850985 A CN103850985 A CN 103850985A
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Abstract
The invention discloses a fan adopting a shell for heat tracing and sealed buffer gas heating, which comprises a shell and a main shaft penetrating into the shell, and is characterized in that the shaft end of the main shaft is connected with the shell through a carbon ring sealing device, the outer wall of the shell is provided with a heating device for heating the shell, and an inflation pipeline which fills buffer gas into an annular sealing cavity in the carbon ring sealing device is provided with a gas heater for heating the buffer gas. The casing of the invention is heated by adopting the heat tracing resistor, temperature difference is not generated inside and outside the casing, no condensation can form olefine acid, the service life of the whole fan is prolonged, and the corrosion risk of the overflowing part in the service life cycle of the fan is ensured.
Description
Technical field
The present invention relates to blower fan, specifically a kind of SO that adopts casing companion heat and sealing cushion gas to heat to extend its life-span
3high temperature circulation blower fan.
Background technique
Copper smelting process is to carry out in closed environment to " two sudden strain of a muscle " (flash smelting FSF and flash blowing FCF), thereby the SO producing
2concentration is higher, if adopt traditional SO
2relieving haperacidity transformation technology need add a large amount of dilution wind SO
2concentration dilution to 12%, causes follow-up equipment scale large like this, and cost of investment rises.High concentration SO
2relieving haperacidity transformation technology is state-of-the-art flue gas acid preparing technology in the world at present, and this technology is also first Application, wherein SO in extensive copper metallurgical gas sulphuric acid system
3high temperature circulation blower fan is one of key equipment in this cover technique.Pass through SO
3high temperature circulation blower fan extracts technique flue gas recirculation, has guaranteed directly treatment S O of this technique
2concentration is up to 16% flue gas.SO
3the working medium that high temperature circulation blower fan is carried is SO
3+ SO
2+ air+micro-catalyst powder, 280 ℃ of inlet temperatures (380 ℃ in short-term).
Conventionally SO in flue gas acid preparing system flue gas
3+ SO
2concentration approximately 5%, SO
3sO in high temperature circulation blower fan flue gas
3+ SO
2concentration>=15% (volume ratio) is far above 5%, and approximately 280～350 ℃ of temperature, far above general SO
3150 ℃ of high temperature circulation blower fan.The corrosivity of high temperature and gas medium is SO
3in high temperature circulation fan operation process two unusual unfavorable factors.
Existing fan casing part directly contacts with external environment, and fan casing temperature is on the low side, and the high temperature of conveying gas body medium and the temperature difference of environment produce condensation, water of condensation and high concentration SO in casing housing sidewall
3and SO
2gas generates diluted acid, thus the flow passage components of corrosion blower fan.Therefore, need to take corresponding technical measures to guarantee the safe operation of manufacturing technique requirent and blower fan, extend the working life of complete blower.
Summary of the invention
The deficiency that the present invention exists for fear of prior art, provides a kind of blower fan that adopts casing companion heat and the heating of sealing cushion gas, to extend the working life of complete blower.
Technical solution problem of the present invention adopts following technological scheme:
A kind of blower fan that adopts casing companion heat and the heating of sealing cushion gas, comprise casing and penetrate the main shaft in casing, its structural feature is, described main-axis end is connected by carbon ring seal device with casing, the outer wall of described casing is provided with the heating equipment to casing heating, and the loading line that is filled with cushion gas to ring packing cavity in described carbon ring seal device is provided with to the gas heater of buffer gas heating.
Structural feature of the present invention is also:
Described heating equipment is the companion's thermal resistor being laid on Fan casing outer side wall.
Described Fan casing outer wall is provided with heat-resistant insulation material layer, and described companion's thermal resistor is located between Fan casing outer wall and adiabator layer.
Sealing place of described Fan casing outer side wall, carbon ring seal device is laid with temperature transducer.
A kind of blower fan heating means that adopt casing companion heat and the heating of sealing cushion gas, its feature is: fan casing is heated and be incubated by companion's thermal resistor, by gas heater, the buffer gas entering in the ring packing cavity of carbon ring seal device is heated, and by temperature transducer measure in real time casing and sealing cushion gas temperature, guarantee Blower Housing temperature under fan operation or parking condition between 250-280 ℃; Enter the cushion gas temperature of sealing between l5O-180 ℃.
Compared with the prior art, beneficial effect of the present invention is embodied in:
(1) cost-saving
SO
3and SO
2gas is met water and is formed respectively sulfuric acid and sulphurous acid, and these two kinds of acid all have stronger corrosivity, and the corrosivity to metallic material under the washing away of High Temperature And Velocity air-flow is stronger.In alloy, only have the corrosion of the ability high-temperature sulfuric acids such as high-alloy stainless steel, nickel molybdenum and nickel molybdenum evanohm, gold, platinum, barium, these metallic material are all comparatively expensive.Casing adopts the heating of companion's thermal resistor, does not produce the temperature difference inside and outside casing, does not have condensation cannot form olefin(e) acid, guarantees that in fan operation Life cycle, flow passage components do not have corrosivity risk, and housing can be selected carbon steel or 304 stainless steels, and relative cost is cheap.
(2) safe and reliable
Internal side of shell face line with rubber is a kind of comparatively conventional method of blower fan corrosion-resistant.But due to SO
3high temperature circulation blower fan fed sheet of a media temperature is high, and the risk that line with rubber has high temperature ageing and comes off, exists potential safety hazard.The be laid in outer side surface of casing of companion's thermal resistor, reliability is high; Fan casing can not adopt line with rubber anticorrosion.
(3) shaft end seal is without leakage
SO
3the working medium that high temperature circulation blower fan is carried due to blower fan is high temperature, high concentration SO
2+ SO
3and containing micro-catalyst dust, these factors all require very harsh to shaft end seal.Conventional machinery sealing, because cooling problem (uses water as cooling liquid easily and SO
3+ SO
2form acid, make cooling liquid with oil inflammable) and dust existence be difficult to be suitable for, SO
3high temperature circulation blower fan adopts carbocyclic ring+cushion gas combination seal pattern.Sealing cushion gas is heated to temperature and is not less than 150 ℃, can effectively prevent that blower fan working medium condensation is formed into acid, and the diluted acid that catalyst powder and working medium condensation become forms sour mud and enters between distinguish ring, holddown spring, makes seal failure.Guarantee that shaft end seal is without leakage.
Accompanying drawing explanation
Fig. 1 is blower fan overall structure schematic diagram of the present invention.
Fig. 2 is the Fan casing that the present invention is provided with heating resistor.
Fig. 3 is the A-A sectional view of Fig. 1.
Fig. 4 is that the B of Fig. 3 is to view.
Number in the figure: 1 fan casing, 2 carbon ring seal devices, 3 motors, 4 coupling, 5 bearing housings, 6 protective housings, 7 bases, 8 companion's thermal resistors, 9 adiabator layers, 10 casing temperature platinum resistance thermometers, 11 sealing cushion gas gas heaters, 12 sealing cushion gas filters, 13 sealing cushion gas reduction valve, 14 sealing cushion gas flow meters, 15 sealing cushion gas platinum resistance thermometers, 16 restricting orifices, 17 sealing front buffer atmospheric pressure tables, 18 sealing back buffer atmospheric pressure tables.
Embodiment
By embodiment, technical solution of the present invention is further explained to explanation below in conjunction with accompanying drawing.
As shown in Figure 1, SO
3high temperature circulation blower fan comprises Fan casing 1, penetrates main shaft and driving mechanism in Fan casing, main-axis end is connected by carbon ring seal device 2 with casing, driving mechanism comprises that structure composition, the diaphragm type bearing devices such as motor 3, diaphragm type coupler 4, solid box case 5 are provided with protective housing 6 outward, and whole blower fan apparatus is fixed on base 7.In order to realize heating and thermal insulation, be provided with the thick heat-resistant insulation material layer 9 in 200mm left and right at Fan casing outer wall simultaneously.The loading line that is wherein filled with cushion gas to ring packing cavity in carbon ring seal device is provided with to the gas heater 11 of buffer gas heating, and cushion gas is pressurized air, enters gas heater 11 by filter 12, reduction valve 13, flowmeter 14.
As shown in Figure 2, be also evenly equipped with the companion's thermal resistor 8 for casing heating on the outer wall of casing, companion's thermal resistor is located between Fan casing outer wall and adiabator layer.Casing temperature is shown in Fig. 1 by platinum resistance thermometer 10() measure, and determine the start and stop of companion's thermal resistor according to real-time measurement values.
As shown in Figure 3, the cushion gas temperature after heating is measured by platinum resistance thermometer 15, and determines the input of gas heater power according to real-time measurement values.
As shown in Figure 4, sealing cushion gas is divided into preposition and rearmounted two strands of gas and enters respectively seal arrangement 2 cavitys, and front buffer gas reduces pressure by restricting orifice 16, and pressure is shown by pressure gauge 17; Back buffer atmospheric pressure is shown by pressure gauge 18.
Apparatus of the present invention working principle is as follows:
Fan casing is heated and be incubated by companion's thermal resistor, by gas heater, the buffer gas entering in the ring packing cavity of carbon ring seal device is heated, and by temperature transducer measure in real time casing and sealing cushion gas temperature, guarantee Blower Housing temperature under fan operation or parking condition between 250-280 ℃; Enter the cushion gas temperature of sealing between l5O-180 ℃.
Claims (5)
1. one kind adopts the blower fan of casing companion heat and the heating of sealing cushion gas, comprise 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 heating equipment to casing heating, and the loading line that is filled with cushion gas to ring packing cavity in described carbon ring seal device is provided with to the gas heater of buffer gas heating.
2. a kind of blower fan that adopts casing companion heat and the heating of sealing cushion gas according to claim 1, is characterized in that, described heating equipment is the companion's thermal resistor being laid on Fan casing outer side wall.
3. a kind of blower fan that adopts casing companion heat and the heating of sealing cushion gas according to claim 2, is characterized in that, described Fan casing outer wall is provided with heat-resistant insulation material layer, and described companion's thermal resistor is located between Fan casing outer wall and adiabator layer.
4. a kind of blower fan that adopts casing companion heat and the heating of sealing cushion gas according to claim 2, is characterized in that, sealing place of described Fan casing outer side wall, carbon ring seal device is evenly equipped with temperature transducer.
5. a kind of blower fan heating means that adopt casing companion heat and the heating of sealing cushion gas according to claim 4, it is characterized in that: fan casing is heated and be incubated by companion's thermal resistor, by gas heater, the buffer gas entering in the ring packing cavity of carbon ring seal device is heated, and by temperature transducer measure in real time casing and sealing cushion gas temperature, guarantee Blower Housing temperature under fan operation or parking condition between 250-280 ℃; Enter the cushion gas temperature of sealing between l5O-180 ℃.
Priority Applications (1)
| 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 |
Applications Claiming Priority (1)
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850985A true CN103850985A (en) | 2014-06-11 |
| CN103850985B CN103850985B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| Country | Link |
|---|---|
| CN (1) | CN103850985B (en) |
Cited By (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 |
| KR101044593B1 (en) * | 2010-06-30 | 2011-06-29 | (주)삼원이앤비 | Blower for high temperature clean gas supply |
| 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 |
-
2014
- 2014-03-20 CN CN201410106311.6A patent/CN103850985B/en active Active
Patent Citations (6)
| 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 |
| KR101044593B1 (en) * | 2010-06-30 | 2011-06-29 | (주)삼원이앤비 | Blower for high temperature clean gas supply |
| 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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| 胡松等: "高温高浓度S03风机技术关键及国产化分析", 《流体机械》 * |
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103850985B (en) | 2016-08-17 |
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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 |