CN204572083U - Two end supports flue gas turbine expander - Google Patents
Two end supports flue gas turbine expander Download PDFInfo
- Publication number
- CN204572083U CN204572083U CN201520253481.7U CN201520253481U CN204572083U CN 204572083 U CN204572083 U CN 204572083U CN 201520253481 U CN201520253481 U CN 201520253481U CN 204572083 U CN204572083 U CN 204572083U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas turbine
- turbine expander
- main shaft
- bearing
- 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.)
- Expired - Fee Related
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 239000003546 flue gas Substances 0.000 title claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a kind of two end supports flue gas turbine expander, wherein, comprise main shaft, wheel disk blade installed by described main shaft, it is characterized in that: one end of described main shaft is inlet end bearing, and the other end is discharge end bearings, and the rotor c.g. of main shaft is between inlet end bearing and discharge end bearings.The two end supports flue gas turbine expander that the utility model provides, improves the stability of rotor, improves the working environment of bearing, decreases the consumption of material, reduces vibration, improves the stress of bearing and bearing housing.
Description
Technical field
The utility model relates to the flue gas turbine expander of oil refining, chemical industry, energy saving, particularly relates to a kind of two end supports flue gas turbine expander.
Background technique
Flue gas turbine expander utilizes catalytic regenerator to burn the heat energy of produced high-temperature low-pressure flue gas and the rotating machinery of pressure energy work done, and the mechanical energy utilizing cigarette machine to produce drives the equipment work such as main air blower or generator or generating, reaches the object of recovered energy.Domestic now operation flue gas turbine expander about 220, wherein about 85% is the YL type series adopting Lan Lian machinery plant to produce, and is axial admission, the radial cantilevered support structure be vented, point single-stage and twin-stage two kinds; Residue is mainly Xi'an aeroengine Group Co., Ltd and German GHH company produces.
China's catalysis Energy Recovery Technology exploitation main process:
Within 1974, Lanzhou machinery plant sets up problem tackling key problem group together with Beijing designing institute, Engineering Thermophysics Suo Deng unit of the Chinese Academy of Sciences, has manufactured experimently China's First flue gas turbine expander in 1976, i.e. First YL series flue gas turbine expander.
Within 1978, China's first set catalysis energy-recuperation system builds up at Fushun second branch factory of oil, and the YL3000 type flue gas turbine expander of this factory trial-production once puts into operation successfully, has filled up domestic blank.So far, China has caught up with the developing steps of International Energy recovery technology.
2003, be put into the high-power flue gas turbine expander of 33000 kilowatt of " 15 " national major technologies and equipment development project, through sincerely uniting and the cooperation of Lanzhou machinery plant and internal class scientific research institutions, last nearly 3 years, finally succeed in developing.This is domestic First superpower flue gas turbine expander, and Ye Shi world Shou Tai is applied to the superpower flue gas turbine expander of high altitude localities.The development success of this flue gas turbine expander, make China after the U.S., become second country that can manufacture 30000 multikilowatt superpower flue gas turbine expanders in the world, this machine is one of only several more than 30,000 kilowatts flue gas turbine expanders in the world, that succeeds in developing is significant, is the important symbol that China's cigarette machine designed capacity and manufacturing capacity reach world-class levels.
Original design technological means falls behind and the later stage does not have technological improvement, fast-growth etc. cause the design of existing operation flue gas turbine expander partial structurtes and falls behind, and there is following problem:
Overall delivery efficiency is low: added up the actual delivery efficiency of domestic about 100 cover flue gas turbine expander, single-stage unit efficiency only about 60% (especially with Shandong to refine flue gas turbine expander efficiency lower, by up-to-date pneumatic design, delivery efficiency should be more than 79%); General about 70% (by up-to-date pneumatic design, delivery efficiency should be more than 87%) of twin-stage unit efficiency;
The component such as blade, wheel disc wash away seriously: because pneumatic design is unreasonable, and internal turbulence is serious, and a large amount of component run less than just scrapping the projected life of part, cause a large amount of economic loss; Fouling of catalyst is serious: because pneumatic design is unreasonable, internal turbulence is serious, and the reasons such as catalyst powder dust concentration contained by flue gas is high, particle is thin cause a large amount of catalyzer to pile up in runner, affect rotor dynamic balancing, cause the equipment operation period not long, nonscheduled down time is long;
The utility model is intended carrying out overall construction design (especially for support system) to flue gas turbine expander, propose a kind of two end supports flue gas turbine expander, now the unstable stator and rotor assembly process process of operation flue gas turbine expander cantilever support is poor, Safety performance is bad, bearing working environment is poor, bearing housing consumptive material is many, vibrate the defects such as large in solution.
Model utility content
Technical problem to be solved in the utility model is to provide a kind of two end supports flue gas turbine expander, solves that existing operation flue gas turbine expander cantilever support unstable stator and rotor assembly process process is poor, Safety performance is bad, bearing working environment is poor, bearing housing consumptive material is many, vibrate the defects such as large.
The utility model is solve the problems of the technologies described above the technological scheme adopted to be to provide a kind of two end supports flue gas turbine expander, wherein, comprise main shaft, wheel disk blade installed by described main shaft, one end of described main shaft is inlet end bearing, the other end is discharge end bearings, and the rotor c.g. of main shaft is between inlet end bearing and discharge end bearings.
Above-mentioned two end supports flue gas turbine expander, wherein, described inlet end bearing adopts carbon ring seal to coordinate honeycomb seal to seal.
Above-mentioned two end supports flue gas turbine expander, wherein, described honeycomb seal adopts multi-stage stairs type.
The utility model has following beneficial effect relative to prior art: the two end supports flue gas turbine expander that the utility model provides, improve the stability of rotor, improve the working environment of bearing, decrease the consumption of material, reduce vibration, improve the stress of bearing and bearing housing.
Accompanying drawing explanation
The structural representation of the two end supports flue gas turbine expander that Fig. 1 provides for the utility model.
Fig. 2 is multi-stage stairs type honeycomb seal.
In figure:
1 inlet end bearing 2 carbon ring seal 3 smoke inlet
4 honeycomb seal 5 smoke outlet 6 discharge end bearings
7 main shaft 8 rotors
Embodiment
Below in conjunction with drawings and Examples, the utility model will be further described.
Current domestic flue gas turbine expander substantially all adopts cantilever structure form, unit has following shortcoming: in order to make the center of gravity of rotor 8 between two spring bearings, there is a major diameter counterweight section in the middle part of main shaft 7, increases rotor 8 weight and high material consumption, main 7 adopt high-temperature alloy material, and unit price is expensive.Although rotor 8 center of gravity especially near inlet end, makes shaft strength undesirable, poor working environment between supporting two, high to bearing requirements.In addition, wheel disk blade and exhaust section bearing distance, and blade, inlet end bearing 1, discharge end bearings 6 form similar triangles relation, the slight imbalance of blade end easily causes the large vibration of bearing.Complex process when cantilever rotor is installed, consuming time many, and dangerous.When cantilever is installed, the stressed relative complex of bearing housing, for meeting usage requirement, bearing housing seems heavy, turns 8 stability bad, particularly multi-stage rotor, multi-stage rotor is replaced by unit rotor by most domestic manufacturers, in order to improve set steady, sacrifices efficiency simultaneously.
As shown in Figure 1, the two end supports flue gas turbine expander that the utility model provides comprises main shaft 7, and described main shaft 7 installs rotor 8 and wheel disk blade, and one end of described main shaft 7 is inlet end bearing 1, and the other end is discharge end bearings 6; Rotor 8 center of gravity of main shaft 7 is between inlet end bearing 1 and discharge end bearings 6.The top of described main shaft 7 is smoke inlet, and the below of described main shaft 7 is smoke outlet 5.
Described inlet end bearing 1 adopts carbon ring seal 2 to coordinate honeycomb seal 4 to seal, and honeycomb seal 4 adopts multi-stage stairs type, and sealability is reliable, long service life, as shown in Figure 2.In addition, the outer installment bearing housing of inlet end bearing 1, discharge end bearings 6.
Adopt the mechanism form of inlet end bearing 1, discharge end bearings 6 two end supports, can above-mentioned several shortcomings be improved, improve stability.Meanwhile, structure adopts the structural type of upper air, lower exhaust, be more suitable for production environment requirement.
Although the utility model discloses as above with preferred embodiment; so itself and be not used to limit the utility model; any those skilled in the art; not departing from spirit and scope of the present utility model; when doing a little amendment and perfect, therefore protection domain of the present utility model is when being as the criterion of defining with claims.
Claims (3)
1. a two end supports flue gas turbine expander, comprises main shaft, wheel disk blade is installed by described main shaft, it is characterized in that: one end of described main shaft is inlet end bearing, and the other end is discharge end bearings, and the rotor c.g. of main shaft is between inlet end bearing and discharge end bearings.
2. two end supports flue gas turbine expander as claimed in claim 1, is characterized in that: described inlet end bearing adopts carbon ring seal to coordinate honeycomb seal to seal.
3. two end supports flue gas turbine expander as claimed in claim 2, is characterized in that: described honeycomb seal adopts multi-stage stairs type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520253481.7U CN204572083U (en) | 2015-04-22 | 2015-04-22 | Two end supports flue gas turbine expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520253481.7U CN204572083U (en) | 2015-04-22 | 2015-04-22 | Two end supports flue gas turbine expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204572083U true CN204572083U (en) | 2015-08-19 |
Family
ID=53864736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520253481.7U Expired - Fee Related CN204572083U (en) | 2015-04-22 | 2015-04-22 | Two end supports flue gas turbine expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204572083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791028A (en) * | 2015-04-22 | 2015-07-22 | 上海成航涡轮技术有限公司 | Flue gas turbine supported through two ends |
-
2015
- 2015-04-22 CN CN201520253481.7U patent/CN204572083U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791028A (en) * | 2015-04-22 | 2015-07-22 | 上海成航涡轮技术有限公司 | Flue gas turbine supported through two ends |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |