CN205349861U - Novel flue gas turbine expander - Google Patents
Novel flue gas turbine expander Download PDFInfo
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- CN205349861U CN205349861U CN201620070197.0U CN201620070197U CN205349861U CN 205349861 U CN205349861 U CN 205349861U CN 201620070197 U CN201620070197 U CN 201620070197U CN 205349861 U CN205349861 U CN 205349861U
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- flue gas
- gas turbine
- stator blade
- blade
- turbine expander
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Abstract
The utility model discloses a novel flue gas turbine expander belongs to the flue gas turbine expander field, aims at providing one kind and effectively slows down blade especially the air current erosion that produces of root of blade and fouling of catalyst's novel flue gas turbine expander, and its technical scheme main points are: a novel flue gas turbine expander, includes main shaft, moving vane, the casing that admits air, air inlet, stator blade, exhaust casing, gas vent, base and broach sealing member, stator blade and moving vane are the compound blade profile that crumples, be provided with a plurality of equidistance beads on the stator blade, the bead direction with the crooked direction of stator blade is consistent, the stator blade root is provided with the strengthening rib, the utility model is suitable for a flue gas turbine expander.
Description
Technical field
This utility model relates to a kind of Novel flue gas turbine.
Background technology
Flue gas turbine expander is to utilize catalytic regenerator to burn the heat energy of produced high-temperature low-pressure flue gas and the rotating machinery of pressure energy work done.For the energy-recuperation system of catalytic cracking unit, utilize the mechanical energy that cigarette machine produces to drive the work of the equipment such as main air blower or electromotor or generating, reach the purpose recovered energy.
Application number is the flue gas turbine expander that the Chinese patent of CN201320260102.8 discloses a kind of improvement, installs a cooling water tank in flue gas turbine expander bearing housing front end, is provided with deflection plate in cooling water tank, and casing is provided with cooling water inlet, outlet；It is filled with insulation material between cooling water tank and flue gas turbine expander volute.Although the flue gas turbine expander of this improvement solves owing to bearing housing front and back end temperature is inconsistent, cause the problem that flue gas turbine rotor, packing sound are ground mutually, but still have the disadvantage that the blade profile of blade and root of blade design are unreasonable, make air turbulence, producing erosion, root of blade is easily broken off.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is in that to provide the Novel flue gas turbine of a kind of air-flow erosion effectively slowing down the generation of blade especially root of blade and fouling of catalyst.
For achieving the above object, this utility model provides following technical scheme: a kind of Novel flue gas turbine, including main shaft, moving vane, inlet casing, air inlet, stator blade, exit casing, air vent, base and labyrinth seal part, described stator blade and moving vane are bending compound blade profile, described stator blade is provided with some equidistant fins, the bending direction of described fin direction and described stator blade is consistent, and described stator blade root is provided with reinforcement.
By adopting technique scheme, described Novel flue gas turbine adopts bending compound blade profile to substitute the simple variable cross-section blade profile of moving vane described in prior art and the uiform section blade profile of stator blade, the efflux angles of described stator blade and the flow inlet angle of moving vane on different radii is made to match, the reasonable pneumatic angle of attack is radially formed whole, alleviate the friction between air-flow and blade, whole runner air-flow is unobstructed, and flow velocity is uniform, makes gas energy be able to abundant recovery；And on described stator blade, it is provided with the some fins along stator blade bending direction, plays rectified action, it is to avoid air turbulence, alleviate the destruction brought of air-flow erosion simultaneously；Described stator blade root is had reinforcement effect by described reinforcement.
This utility model is further arranged to: the runner of described exit casing and described labyrinth seal part junction rounding off, the comb periphery of described labyrinth seal part is provided with boss.
By adopting technique scheme, the described exit casing runner air-flow after rounding off processes is more smooth and easy when passing through, and reduces airflow obstruction；Boss is set in the comb periphery of described labyrinth seal part, it is possible to surrounded by described comb so that the gap between described comb and described wheel disc is only small, decreases air-flow dispersion and loss, also solve wheel disc rear end face and wash away problem.
This utility model is further arranged to: described inlet casing inwall adopts lemniscate type, and the radius of curvature that described lemniscate type is from described inlet casing top to middle part changes unanimously from big to small.
By adopting technique scheme, the described inlet casing radius of curvature of lemniscate type gradually changes from small to large, and Curvature varying trend is consistent, is conducive to the convergence of runner, reduces inlet loss, alleviates the air-flow impact to described inlet casing.
Compared with prior art, this utility model has the advantages that described bending compound blade profile can make air-flow unobstructed so that the proud abundant recovery of gas energy, some its rectified actions of described fin, it is to avoid turbulent flow, and fundamentally solves erosion problem；Described stator blade root is reinforced by described reinforcement, it is prevented that erosion is damaged.Streamlined exit casing runner reduces airflow obstruction；The described labyrinth seal part of enclosed construction makes airflow smooth；Lemniscate type inlet casing inwall can alleviate airflow scouring.
Accompanying drawing explanation
Fig. 1 is the structure chart of the present embodiment flue gas turbine expander；
Fig. 2 is the enlarged drawing of A and labyrinth seal part in Fig. 1；
Fig. 3 is the structure chart of former flue gas turbine expander labyrinth seal part；
Fig. 4 is the structure chart of the present embodiment stator blade；
Fig. 5 is the present embodiment inlet casing profile.
In figure, 1, inlet casing；2, main shaft；3, moving vane；31, wheel disc；4, stator blade；5, base；6, air inlet；7, air vent；8, exit casing；9, labyrinth seal part；91, comb；92, boss；10, fin；11, reinforcement；12, lemniscate molded line.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
A kind of Novel flue gas turbine, including main shaft 2, moving vane 3, inlet casing 1, air inlet 6, stator blade 4, exit casing 8, air vent 7, base 5 and labyrinth seal part 9, described stator blade 4 and moving vane 3 are bending compound blade profile (as shown in Figure of description 4), described stator blade 4 is provided with some equidistant fins 10, the bending direction of described fin 10 direction and described stator blade 4 is consistent, described stator blade 4 root is provided with reinforcement 11, the shape of stator blade 4, the line style torsional direction of described bending compound blade profile meets gas flow tendency, some described fins 10 are arranged along the torsional direction of described bending compound blade profile.
Described exit casing 8 runner and described labyrinth seal part 9 junction rounding off (as shown in Figure of description 4), comb 91 periphery of described labyrinth seal part 9 is provided with boss 92.
Described inlet casing 1 inwall adopts lemniscate type (as shown in Figure of description 5), and the radius of curvature variation tendency from big to small that described lemniscate type is from described inlet casing 1 top to middle part is consistent.
It is described as follows:
In prior art; the stator blade 4 of flue gas turbine expander and the pneumatic design of moving vane 3 are unreasonable, and inside is smooth but local flow is smooth, and blade design is unreasonable; blade root position blade is intensive; air velocity is fast, often causes Airflow obstruction and turbulent flow, causes serious erosion; and change in flow is uneven; turbine interior flow separation, causes local air flow disorderly, causes that fouling of catalyst aggravates.
Novel flue gas turbine adopts bending compound blade profile to replace the variable cross-section of moving vane 3 in prior art and reverses the uiform section blade profile of blade profile and stator blade 4, the rational pneumatic angle of attack can be formed radially whole, alleviate the friction between air-flow and blade, whole runner air-flow is unobstructed, flow velocity is uniform, makes gas energy be able to abundant recovery；Meanwhile, improve thing turbulent flow, adjust local air flow speed, solve erosion and fouling of catalyst problem；The shape of stator blade 4 as shown in Figure of description 4, the line style torsional direction of described bending compound blade profile meets gas flow tendency, and some described fins 10 are arranged along the torsional direction of described bending compound blade profile.Described stator blade 4 is provided with the some fins 10 along stator blade 4 bending direction, plays rectified action, it is to avoid air turbulence, alleviate the destruction brought of air-flow erosion simultaneously；Described stator blade 4 root is had reinforcement effect by described reinforcement 11.
Change exit casing 8 runner-type line, make its runner inner wall rounder and more smooth, alleviate the impact to flow path wall, reduce airflow obstruction, adjust labyrinth seal part 9 version, comb 91 periphery is provided with described boss 92, gap between comb 91 and wheel disc 31 is diminished, decrease windage loss, make grate flow channel link up, solve wheel disc 31 rear end face and wash away problem；Inlet casing 1 inwall adopts lemniscate type, and in prior art, the radius of curvature of inlet casing 1 inwall is descending, ascending change again, and the radius of curvature of inlet casing 1 inwall of Novel flue gas turbine is consistent change from small to large, be conducive to the convergence of runner, reduce inlet loss and erosion.
This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made the amendment not having creative contribution as required by those skilled in the art after reading this specification, but as long as being affected by the protection of Patent Law in right of the present utility model.
Claims (3)
1. a Novel flue gas turbine, including main shaft (2), moving vane (3), inlet casing (1), air inlet (6), stator blade (4), exit casing (8), air vent (7), base (5) and labyrinth seal part (9), it is characterized in that: described stator blade (4) and moving vane (3) are bending compound blade profile, described stator blade (4) is provided with some equidistant fins (10), the torsional direction of described fin (10) bearing of trend and described stator blade (4) is consistent, and described stator blade (4) root is provided with reinforcement (11).
2. a kind of Novel flue gas turbine according to claim 1, is characterized in that: the runner of described exit casing (8) and described labyrinth seal part (9) junction rounding off, comb (91) periphery of described labyrinth seal part (9) is provided with boss (92).
3. a kind of Novel flue gas turbine according to claim 1, is characterized in that: described inlet casing (1) inwall adopts lemniscate type, and the radius of curvature variation tendency from big to small that described lemniscate type is from described inlet casing (1) top to middle part is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070197.0U CN205349861U (en) | 2016-01-23 | 2016-01-23 | Novel flue gas turbine expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620070197.0U CN205349861U (en) | 2016-01-23 | 2016-01-23 | Novel flue gas turbine expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205349861U true CN205349861U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620070197.0U Active CN205349861U (en) | 2016-01-23 | 2016-01-23 | Novel flue gas turbine expander |
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| CN (1) | CN205349861U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295958A (en) * | 2018-03-21 | 2019-10-01 | 中国石化工程建设有限公司 | A kind of leaf blower device for flue gas turbine expander |
-
2016
- 2016-01-23 CN CN201620070197.0U patent/CN205349861U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295958A (en) * | 2018-03-21 | 2019-10-01 | 中国石化工程建设有限公司 | A kind of leaf blower device for flue gas turbine expander |
| CN110295958B (en) * | 2018-03-21 | 2022-06-17 | 中国石化工程建设有限公司 | Blade purging device for flue gas turbine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |