CN201144714Y - Disc draft type capacity-adjustable TRT - Google Patents
Disc draft type capacity-adjustable TRT Download PDFInfo
- Publication number
- CN201144714Y CN201144714Y CNU2008200616776U CN200820061677U CN201144714Y CN 201144714 Y CN201144714 Y CN 201144714Y CN U2008200616776 U CNU2008200616776 U CN U2008200616776U CN 200820061677 U CN200820061677 U CN 200820061677U CN 201144714 Y CN201144714 Y CN 201144714Y
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- main shaft
- casing
- exhaust
- exhaust casing
- bearing
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Abstract
The utility model relates to a disc-shaft typed volume adjustable TRT, the rotator of which comprises a main shaft and an impeller disc arranged on the main shaft, and the stator of which comprises an air inlet casing, an adjustable stator vane mechanism, an exhaust casing, a main shaft support bearing, a bearing box and a base; wherein, the bearing box is fixed on the base; the main shaft support is arranged inside the bearing box; the air inlet casing, the adjustable static impeller mechanism and the exhaust casing are assembled into a whole to be connected with the base; the air inlet of the air inlet casing is positioned in the axial direction of the main shaft; the exhaust port of the exhaust casing is positioned in the radial direction of the main shaft; one end of the main shaft is a cantilever end, the cantilever end extends out the bearing box and enters the exhaust casing, and the intersection part of the cantilever end of the main shaft and the exhaust casing is provided with a seal; the impeller disc is fixed on the cantilever end of the main shaft and positioned inside the exhaust casing. The TRT has the advantages of axial air inlet, radial exhaust, small volume, simple and compact structure, good rigidity of the main shaft and small sealing part between the rotator and the stator.
Description
Technical field
The utility model relates to a kind of blast-furnace top gas recovery turbine generator (english abbreviation TRT is called for short TRT in below describing).
Background technique
TRT is the blast-furnace top gas recovery recovery plant of iron and steel enterprise, all is equipped with the TRT generator set after the large, medium and small type blast furnace coal gas purification system of metallurgy industry both at home and abroad at present.
It is reported, existing small-sized TRT generator set, what adopt is radial air inlet, radially exhaust, existing large-scale TRT generator set, what adopt is radial air inlet, axial exhaust, therefore have following problem: 1, owing to inlet casing, exit casing are arranged between the main shaft support bearing, thereby the span between the main shaft support bearing is big, is difficult to guarantee the rigidity of main shaft; 2, scroll casing type inlet casing and exit casing, make that air inlet, exhaust all need airflow direction is changed 90 degree, thereby the volume of unit is difficult to dwindle: 3, the intersection of main shaft and inlet casing and exit casing all need seal, and causes the amount of expending of sealing medium nitrogen to increase; 4, be not easy to maintain, safeguard the main shaft support bearing.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of axial admission, the dish shaft type variable capacity TRT of exhaust radially are provided, this kind TRT not only volume is little, simple and compact for structure, and the good rigidly of main shaft, and the sealing position between main shaft and the stator is few.
Dish shaft type variable capacity TRT described in the utility model is made up of rotor and stator, and rotor comprises the main shaft and the impeller plate that is installed on the main shaft, and stator comprises air intake casing, variable stator vane angle mechanism, exhaust casing, main shaft support bearing, bearing housing and base; The assembling mode of each member and parts: bearing housing is fixed on the base, and the main shaft support bearing is installed in the bearing housing; Air intake casing, variable stator vane angle mechanism, exhaust casing are assembled into one, and this assemblying body is connected with base; Main shaft and the stack mounting of main shaft support bearing, its main body is positioned at bearing housing, the one end is a cantilever end, described cantilever end stretches out bearing housing and enters exhaust casing, the cantilever end of main shaft and the intersection of exhaust casing are provided with sealing (because coal gas belongs to toxic gas, preferred nitrogen is made the shutoff medium and fed in the sealing); The suction port of air intake casing is positioned at the axial of main shaft, and the relief opening of exhaust casing is positioned at main shaft radially; The impeller plate is fixed on the cantilever end of main shaft, is positioned at exhaust casing, and is gapped between the movable vane outer rim of installing on the impeller plate and the vias inner walls of exhaust casing.Described gap is very little, is 1.5mm～2.2mm.
During work, blast furnace gas is through the stator blade of air intake casing rectification, the variable stator vane angle mechanism backlash movable vane wheel disc spins of prewhirling, and the impeller plate drives main axis rotation, and the gas acting is passed to the synchronous generator generating.Can change the capacity of TRT by the angle of regulating stator blade.
The utlity model has following beneficial effect:
1, owing to air intake casing, variable stator vane angle mechanism, exhaust casing are assembled into one, axial admission, radially exhaust are compared with existing TRT, and structure is simple more compact, and volume reduces, weight saving, and cost reduces.
2, because the intersection area of main shaft and stator has only a place, compare with existing TRT, reduce at the sealing position, the amount of expending of shutoff medium reduces.
3, adopt the cantilever end of the main shaft of dual-gripper that the impeller plate is installed, thereby can reduce the span between the main shaft support bearing, improve the rigidity of main shaft, first critical speed can be higher than 1.25 times of working speeds.
4,, and help temperature controlling in the bearing housing because bearing housing establishes one's own system, and bearing concentrates in the bearing housing, effectively isolates with coal gas of high temperature, not only helps maintenance, the maintenance of bearing.
5, the relief opening of exhaust casing can make things convenient for the unit layout according to the different direction setting of factory condition and pipeline trend along its diameter, saves factory floor space.
6, the shape of air intake casing and structure can make coal gas constantly quicken by this housing the time.
Description of drawings
Fig. 1 is a kind of structural representation of dish shaft type variable capacity TRT described in the utility model;
Fig. 2 is the partial enlarged drawing of Fig. 1, and this figure has clearly illustrated that the structure of variable stator vane angle mechanism;
Fig. 3 is a kind of shape and the structural representation of exhaust casing;
Fig. 4 is a kind of structural representation of interlock ring.
Among the figure, 1-air intake casing, 2-variable stator vane angle mechanism, the 3-impeller plate, 4-exhaust casing, 5-block bearing, 6-main shaft, 7-supported Thrust Bearing, 8-bearing housing, 9-base, 10-interlock ring, 11-slide block, 12-bearing pin, 13-rocking arm, 14-stator blade, 15-stator blade inner housing, 16, outlet pipe, 17-flange.
Embodiment
In the present embodiment, the structure of dish shaft type variable capacity TRT as shown in Figure 1.Rotor comprises main shaft 6 and is installed in the impeller plate 3 of main shaft cantilever end; Stator comprises air intake casing 1, variable stator vane angle mechanism 2, exhaust casing 4, main shaft support bearing, bearing housing 8 and base 9.
Air intake casing 1 is a conic tube, and air guide is installed in the cylindrical shell, and the big end of conic tube is a suction port.The structure of variable stator vane angle mechanism 2 comprises interlock ring 10, slide block 11, bearing pin 12, rocking arm 13, stator blade 14, stator blade inner housing 15 as shown in Figure 2, and the shape of interlock ring 10, structure are as shown in Figure 4; The control mode of variable stator vane angle mechanism has two kinds: rotating speed control mode and voltage stabilizing control mode; The rotating speed control mode is a kind of control mode that adopts in starting boosting velocity procedure, in the start-up course of unit, regulate speed and the direction that coal gas rushes at movable vane by the aperture of regulating stator blade, thereby the rotating speed of control unit, the pressure of blast furnace gas is by the reduction valve group pilot pressure in parallel with the TRT system during this period, this mode can substitute the function of the startup series flow control valve before the unit inlet, and this kind control mode is feedback signal with the generating unit speed; The voltage stabilizing control mode is starting a kind of control mode that boosting velocity procedure finishes, synchronous generator adopts when entering the electricity generation grid-connecting state, regulating coal gas by the aperture of regulating stator blade rushes at the speed and the direction of movable vane and regulates the preceding suction pressure of stator blade, thereby reach the purpose of steady pressure, this kind control mode is a feedback signal with unit suction pressure or blast furnace roof pressure.The profile of exhaust casing 4 and structure such as Fig. 3, shown in Figure 1, its relief opening is provided with along its diametric(al).Spindle support shaft is contracted and is drawn together block bearing 5 and supported Thrust Bearing 7.
Assembling mode: air intake casing 1, variable stator vane angle mechanism 2, the assembling of exhaust casing 4 usefulness bolts, this assemblying body is connected with base 9 by sliding pin, bolt etc.; Bearing housing 8 is fixed by bolts on the base 9, and block bearing 5, supported Thrust Bearing 7 are positioned at bearing housing 8, and (spacing requires to determine with the rigidity that satisfies main shaft) is installed mutually across a certain distance; Main shaft 6 is installed in the bearing housing 8 by block bearing 5, supported Thrust Bearing 7, and its cantilever end stretches out bearing housing 8 and enters exhaust casing 4, and the intersection of the cantilever end of main shaft 6 and exhaust casing 4 is provided with motive sealing, and nitrogen is made the shutoff medium and fed in the sealing; The suction port of air intake casing 1 is positioned at the axial of main shaft 6, and the relief opening of exhaust casing 4 is positioned at main shaft 6 radially; The impeller plate 3 is fixed on the cantilever end of main shaft 6, and is positioned at exhaust casing 4, and the gap of 1.5mm is arranged between movable vane outer rim of installing on the impeller plate 3 and the air flue inwall in the exhaust casing.
Claims (5)
1, a kind of dish shaft type variable capacity TRT, form by rotor and stator, rotor comprises main shaft (6) and is installed in the impeller plate (3) on the main shaft, stator comprises air intake casing (1), variable stator vane angle mechanism (2), exhaust casing (4), main shaft support bearing, bearing housing (8) and base (9), it is characterized in that:
Air intake casing (1), variable stator vane angle mechanism (2), exhaust casing (4) are assembled into one, and this assemblying body is connected with base (9),
Bearing housing (8) is fixed on the base (9), and the main shaft support bearing is installed in the bearing housing (8),
Main shaft (6) and the stack mounting of main shaft support bearing, its main body is positioned at bearing housing (8), and the one end is a cantilever end, and described cantilever end stretches out bearing housing (8) and enters exhaust casing (4), the intersection of the cantilever end of main shaft (6) and exhaust casing (4) is provided with sealing
The suction port of air intake casing (1) is positioned at the axial of main shaft (6), and the relief opening of exhaust casing (4) is positioned at main shaft (6) radially,
The impeller plate (3) is fixed on the cantilever end of main shaft (6), is positioned at exhaust casing (4), between the movable vane outer rim that the impeller plate (3) is upward installed and the exhaust passage inwall of exhaust casing airspace is arranged.
2, dish shaft type variable capacity TRT according to claim 1 is characterized in that the airspace between the exhaust passage inwall of movable vane outer rim that the impeller plate (3) go up to be installed and exhaust casing is 1.5mm～2.2mm.
3, dish shaft type variable capacity TRT according to claim 1 and 2 is characterized in that spindle support shaft is contracted to draw together block bearing (5) and supported Thrust Bearing (7).
4, dish shaft type variable capacity TRT according to claim 1 and 2 is characterized in that air intake casing 1 is conic tube, and air guide is installed in the cylindrical shell, and the big end of conic tube is a suction port.
5, dish shaft type variable capacity TRT according to claim 3 is characterized in that air intake casing 1 is conic tube, and air guide is installed in the cylindrical shell, and the big end of conic tube is a suction port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200616776U CN201144714Y (en) | 2008-01-09 | 2008-01-09 | Disc draft type capacity-adjustable TRT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200616776U CN201144714Y (en) | 2008-01-09 | 2008-01-09 | Disc draft type capacity-adjustable TRT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201144714Y true CN201144714Y (en) | 2008-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200616776U Expired - Lifetime CN201144714Y (en) | 2008-01-09 | 2008-01-09 | Disc draft type capacity-adjustable TRT |
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| Country | Link |
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| CN (1) | CN201144714Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942533A (en) * | 2010-08-25 | 2011-01-12 | 西安胜唐鼓风机有限公司 | Dried radial flow recovery unit of excessive pressure and residual heat in blast-furnace gas |
| CN102363821A (en) * | 2011-11-02 | 2012-02-29 | 思安新能源股份有限公司 | High speed blast furnace gas pressure turbine |
| CN102383867A (en) * | 2011-11-02 | 2012-03-21 | 思安新能源股份有限公司 | Coaxial constant-speed turbine set for blast furnace |
| CN105240288A (en) * | 2015-10-20 | 2016-01-13 | 西安西航集团航空航天地面设备有限公司 | Device for improving efficiency of single-stage high-power range hood |
| CN106321152A (en) * | 2016-08-29 | 2017-01-11 | 中航动力股份有限公司 | Blast furnace gas excess pressure recovery turbine motor of cantilever single-rotor structure |
| CN109404056A (en) * | 2018-12-04 | 2019-03-01 | 中材节能股份有限公司 | A kind of axial exhaust steam turbine machine of unilateral support |
-
2008
- 2008-01-09 CN CNU2008200616776U patent/CN201144714Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942533A (en) * | 2010-08-25 | 2011-01-12 | 西安胜唐鼓风机有限公司 | Dried radial flow recovery unit of excessive pressure and residual heat in blast-furnace gas |
| CN102363821A (en) * | 2011-11-02 | 2012-02-29 | 思安新能源股份有限公司 | High speed blast furnace gas pressure turbine |
| CN102383867A (en) * | 2011-11-02 | 2012-03-21 | 思安新能源股份有限公司 | Coaxial constant-speed turbine set for blast furnace |
| CN102363821B (en) * | 2011-11-02 | 2014-01-29 | 思安新能源股份有限公司 | High speed blast furnace gas pressure turbine |
| CN105240288A (en) * | 2015-10-20 | 2016-01-13 | 西安西航集团航空航天地面设备有限公司 | Device for improving efficiency of single-stage high-power range hood |
| CN105240288B (en) * | 2015-10-20 | 2018-01-05 | 西安西航集团航空航天地面设备有限公司 | A kind of device for improving the high-power cigarette engine efficiency of single-stage |
| CN106321152A (en) * | 2016-08-29 | 2017-01-11 | 中航动力股份有限公司 | Blast furnace gas excess pressure recovery turbine motor of cantilever single-rotor structure |
| CN106321152B (en) * | 2016-08-29 | 2018-01-09 | 中航动力股份有限公司 | A kind of blast furnace coal gas residual pressure recovery turbine machine of cantilever single-turn minor structure |
| CN109404056A (en) * | 2018-12-04 | 2019-03-01 | 中材节能股份有限公司 | A kind of axial exhaust steam turbine machine of unilateral support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHENGDU CHENGFA ENERGY POWER ENGINEERING CO., LTD. Free format text: FORMER OWNER: CHENGDU ENGINE (GROUP) CO., LTD. Effective date: 20120331 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120331 Address after: Xindu town Shulong Avenue South of Xindu District of Chengdu city in Sichuan province 610503 No. 521 building 166 layer 1-2 Patentee after: CHENGDU CHENGFA SCIENCE & TECHNOLOGY POWER ENGINEERING CO., LTD. Address before: Xindu District of Chengdu city in Sichuan province 610503 Shulong avenue into the industrial park into the Group Technology Center Patentee before: Chengdu Engine (Group) Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20081105 |
|
| CX01 | Expiry of patent term |