CN202391484U - Adjustable steam-supplementing mechanism for steam turbine - Google Patents
Adjustable steam-supplementing mechanism for steam turbine Download PDFInfo
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- CN202391484U CN202391484U CN2011205327308U CN201120532730U CN202391484U CN 202391484 U CN202391484 U CN 202391484U CN 2011205327308 U CN2011205327308 U CN 2011205327308U CN 201120532730 U CN201120532730 U CN 201120532730U CN 202391484 U CN202391484 U CN 202391484U
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- supplementing
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Abstract
The utility model discloses an adjustable steam-supplementing mechanism for a steam turbine, which comprises an air cylinder body. An inner air cylinder chamber is arranged in the air cylinder body, a rotary partition is arranged in the inner air cylinder chamber and divides the inner air cylinder chamber into a steam chamber and a mixing chamber, a flow-dividing partition is arranged in the steam chamber and divides the steam chamber into a main-steam steam chamber and a steam-supplementing steam chamber, and a steam-supplementing port communicated with the steam-supplementing chamber is arranged on the air cylinder body. The adjustable steam-supplementing mechanism for the steam turbine is compact in structure, small in damage to an original structure, small in amount of transforming work, small in steam-supplementing throttling loss, wide in application range of steam-supplementing pressure and small in pneumatic loss, and inner efficiency and running stability of a steam-supplementing-type steam turbine are improved effectively.
Description
Technical field
The utility model relates to a kind of filling mechanism of filling formula vapor wheel, relates to the adjustable filling of a kind of steam turbine mechanism specifically, belongs to the power generating equipment technical field.
Background technique
Steam turbine is the rotary power machinery that the transformation of energy of steam is become mechanical work.Claim steam turbine again.Main prime mover as generating usefulness also can directly drive various pumps, blower fan, compressor and propeller for vessels etc.Can also utilize the steam discharge or the intermediate extraction of steam turbine to satisfy production and heat supply needs in life.
Steam compensating turbine is a kind of of steam turbine, Duos a filling than common steam turbine.Steam compensating turbine is except main steam gets into the generating of steam turbine impulsion turbine blade from main inlet throttle-stop valve and adjustment doors, and what gets into the generating of steam turbine impulsion turbine blade behind steam turbine to also have one road low pressure steam, thereby has increased generated energy, raises the efficiency.Steam compensating turbine is applicable to the private station or the middle-size and small-size power station industry of industries such as cement, chemical industry, oil, metallurgy, coking and biomass energy, waste incineration more, can effectively utilize the low parameter energy such as waste steam in the production procedure.
Existing filling steam turbine is when operation, and high pressure steam gets into the steam turbine acting through main inlet throttle-stop valve, modulating valve, and low pressure steam gets into cylinder through filling valve, single valve modulating valve and mixes the back acting with main steam.The single valve modulating valve is under part filling load, and restriction loss is bigger, and deficiency in economic performance can't reach the purpose that makes full use of filling, and the direct side knock master of filling steam flow steam flow, and aerodynamic loss is bigger, thereby has influenced steam turbine internal efficiency and operation stability.In addition, the filling unit reduces restriction loss in order to improve the utilization ratio of filling; Can only be designed to filling pressure a little more than inner cylinder pressure, and filling generally is unsettled, pressure has fluctuation; When filling pressure descends, can cause inner cylinder pressure to be higher than filling pressure, also just can't filling.If strengthen the Applicable scope of filling, it is more to make filling pressure be higher than inner cylinder pressure, can cause the increasing of restriction loss again.
So the inventor finds: it is little how to design a kind of filling restriction loss, and filling accommodation is big, can improve the steam turbine filling mechanism of filling steam turbine internal efficiency and operation stability, becomes the problem that needs most solution at present.
The model utility content
The problem that the utility model will solve is low in order to overcome existing steam compensating turbine filling efficient, and shortcomings such as filling poor stability provide a kind of filling restriction loss to reduce, and during the filling pressure surge, improve the adjustable filling of the steam turbine mechanism of operation stability.
In order to address the above problem, the utility model adopts following technological scheme:
A kind of steam turbine is adjustable filling mechanism; Comprise cylinder block, have cylinder chamber in the cylinder block, in cylinder chamber, be provided with rotating barrier; Rotating barrier is partitioned into vaporium and mixing chamber with cylinder chamber; Be provided with split-flow baffles in the vaporium, split-flow baffles is partitioned into main decatize steam chest and filling vaporium with vaporium, and said cylinder block is provided with the filling mouth that is communicated with the filling vaporium.
Said rotating barrier is provided with several following half window that are communicated with main decatize steam chest and mixing chamber, is communicated with the last half window of filling vaporium and mixing chamber.
Be provided with movable vane in the mixing chamber, said half window down and last half window and the corresponding position of movable vane are respectively equipped with nozzle.
The principle of this structure is that filling steam flow and main vapour steam flow are separated, and lets it respectively through being arranged on the nozzle above the rotating barrier, is mixing countercylinder low pressure stage acting then again through behind the movable vane.
Below be the further improvement of the utility model to such scheme:
Rotating barrier comprises first swivel becket and second swivel becket, and the cross section of last half window is a rectangle; Half window is curved on several is evenly arranged on first swivel becket.
Further improve: the cross section of following half window is a sector structure, is arranged on second swivel becket.
Because filling need realize control through control opening and closing window, promptly nozzle is joined vapour control, and main steam flow does not need control; So when the filling load variations; Swivel becket rotates according to predefined degrees of rotation, and the last half window of superior hemiseptum body is opened or closed to order, plays the effect of control admission area; The admission area that the following half window of sector structure is controlled does not change, and can not produce the wrong purpose of disturbing to main vapour again thereby reach when controlling filling.
Because adopt this kind structure, when having only window when one group of rotating barrier near complete opening, next group window just begins to open; So under part filling load; Have only through that part of steam of standard-sized sheet window not just to receive throttling, and the single valve modulating valve is when the part filling is loaded, can be with whole filling throttlings; So when the part filling was loaded, the efficient of unit was higher than the existing filling unit that adopts single valve filling modulating valve.
The left side of rotating barrier is the cylinder high pressure section, and the right side is the cylinder low pressure stage.Filling gets into the filling vaporium in the cylinder from filling mouth, through the last half window of rotating barrier, gets into window institute to deserved nozzle, after the step-down speedup movable vane is done work.
Main steam flow is through main inlet throttle-stop valve, after modulating valve gets into cylinder, and first countercylinder high pressure section acting, from the high pressure section laggard decatize steam chest of becoming owner of that comes out, the following half window through rotating barrier gets into window institute to deserved nozzle again, after the step-down speedup movable vane is done work.Main steam flow and filling stream mix in mixing chamber through behind the movable vane, continue the cylinder low pressure stage acting to the back again.
The beneficial effect of the utility model is, compact structure, and little to the destruction of original structure, the retrofit work amount is little, and the filling restriction loss is little, and filling pressure adaptation scope is wide, and aerodynamic loss is little, has effectively improved the internal efficiency and the operation stability of steam compensating turbine.
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Description of drawings
Accompanying drawing 1 is the utility model embodiment's a structural representation;
Accompanying drawing 2 is that A-A in the accompanying drawing 1 is to sectional view;
Accompanying drawing 3 is the structural representation of split-flow baffles among the utility model embodiment;
Accompanying drawing 4 is the structural representation of rotating barrier swivel becket among the utility model embodiment.
Among the figure: the 1-split-flow baffles; The 2-filling mouth; 3-filling vaporium; The last half window of 4-; The 5-rotating barrier; The 6-nozzle sets; The 7-movable vane; 8-mixing chamber; 9-master's decatize steam chest; Half window under the 10-; The 11-briquetting; The 12-diaphragm gland; The axial packing of 13-; First swivel becket of 14-; The 15-cylinder block; Second swivel becket of 16-.
Embodiment
Embodiment, like Fig. 1, shown in Figure 2, a kind of steam turbine is adjustable filling mechanism; Comprise cylinder block 15, have cylinder chamber in the cylinder block 15, in cylinder chamber, be provided with rotating barrier 5; Rotating barrier 5 is partitioned into vaporium and mixing chamber 8 with cylinder chamber; Be provided with split-flow baffles 1 in the vaporium, split-flow baffles 1 is partitioned into main decatize steam chest 9 and filling vaporium 3 with vaporium, and said cylinder block 15 is provided with the filling mouth 2 that is communicated with filling vaporium 3.
Said rotating barrier 5 is provided with several following half window 10 that are communicated with main decatize steam chest 9 and mixing chamber 8, is communicated with the last half window 4 of filling vaporium 3 and mixing chamber 8.
Be provided with movable vane 7 in the mixing chamber 8, said half window 10 down is respectively equipped with nozzle 6 with last half window 4 with movable vane 7 corresponding positions.
As shown in Figure 3; Split-flow baffles 1 is installed in the upper cylinder half through briquetting 11; Diaphragm gland 12 is housed and is processed with axial packing 13, split-flow baffles 1 plays the effect of separating main vapour steam flow and filling steam flow, make filling entering cylinder after; Can not directly mix, and mix with main vapour steam flow again after will getting into mixing chamber 8 through filling vaporium 3 with main vapour steam flow.
The principle of this structure is that filling steam flow and main vapour steam flow are separated, and lets it respectively through being arranged on the nozzle 6 above the rotating barrier 5, is mixing countercylinder low pressure stage acting then again through movable vane 7 backs.
As shown in Figure 4; Rotating barrier 5 comprises first swivel becket 14 and second swivel becket 16; First swivel becket 14 is consistent with the swivel becket of traditional rotating barrier structure, half window 4 curved being evenly arranged on first swivel becket 14 on several, and the cross section of last half window 4 is a rectangle;
Following half window 10 is a sector structure, is arranged on second swivel becket 16.
Because filling need realize control through control opening and closing window, promptly nozzle is joined vapour control, and main steam flow does not need control; So when the filling load variations; Swivel becket rotates according to predefined degrees of rotation, and the last half window 4 of superior hemiseptum body is opened or closed to order, plays the effect of control admission area; The admission area that the following half window 10 of sector structure is controlled does not change, and can not produce the wrong purpose of disturbing to main vapour again thereby reach when controlling filling.
The left side of rotating barrier 5 is the cylinder high pressure section, and the right side is the cylinder low pressure stage.The filling vaporium 3 that filling gets in the cylinder from filling mouth 2 through the last half window 4 of rotating barrier 5, gets into window institute to deserved nozzle 6, after the step-down speedup movable vane 7 is done work.
Main steam flow is through main inlet throttle-stop valve, after modulating valve gets into cylinder, first countercylinder high pressure section acting, from the high pressure section laggard decatize steam chest 9 of becoming owner of that comes out, the following half window 10 through rotating barrier 5 gets into windows institute to deserved nozzle 6 again, after the step-down speedup to movable vane 7 actings.Main steam flow and filling stream mix in mixing chamber 8 through behind the movable vane 7, continue the cylinder low pressure stage acting to the back again.
Claims (3)
1. the adjustable filling of a steam turbine mechanism comprises cylinder block (15), and cylinder block has cylinder chamber in (15), it is characterized in that:
In cylinder chamber, be provided with rotating barrier (5), rotating barrier (5) is partitioned into vaporium and mixing chamber (8) with cylinder chamber;
Be provided with split-flow baffles (1) in the vaporium, split-flow baffles (1) is partitioned into main decatize steam chest (9) and filling vaporium (3) with vaporium, and said cylinder block (15) is provided with the filling mouth (2) that is communicated with filling vaporium (3);
Said rotating barrier (5) is provided with several following half window (10) that are communicated with main decatize steam chest (9) and mixing chamber (8), is communicated with the last half window (4) of filling vaporium (3) and mixing chamber (8);
Be provided with movable vane (7) in the mixing chamber (8), said half window (10) down and last half window (4) are respectively equipped with nozzle (6) with the corresponding position of movable vane (7).
2. the adjustable filling of a kind of steam turbine according to claim 1 mechanism is characterized in that: rotating barrier (5) comprises first swivel becket (14) and second swivel becket (16);
The cross section of last half window (4) is a rectangle, and half window on several (4) is curved to be evenly arranged on first swivel becket (14).
3. the adjustable filling of a kind of steam turbine according to claim 2 mechanism, it is characterized in that: the cross section of following half window (10) is a sector structure, is arranged on second swivel becket (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205327308U CN202391484U (en) | 2011-12-19 | 2011-12-19 | Adjustable steam-supplementing mechanism for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205327308U CN202391484U (en) | 2011-12-19 | 2011-12-19 | Adjustable steam-supplementing mechanism for steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391484U true CN202391484U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205327308U Expired - Fee Related CN202391484U (en) | 2011-12-19 | 2011-12-19 | Adjustable steam-supplementing mechanism for steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391484U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047642A (en) * | 2014-04-24 | 2014-09-17 | 山东青能动力股份有限公司 | Turbine rotary partition board extracting steam at middle part and inletting steam at periphery |
| CN109653807A (en) * | 2018-11-30 | 2019-04-19 | 东方电气集团东方汽轮机有限公司 | A kind of filling device |
| CN112832875A (en) * | 2021-02-03 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
-
2011
- 2011-12-19 CN CN2011205327308U patent/CN202391484U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047642A (en) * | 2014-04-24 | 2014-09-17 | 山东青能动力股份有限公司 | Turbine rotary partition board extracting steam at middle part and inletting steam at periphery |
| CN104047642B (en) * | 2014-04-24 | 2017-01-25 | 山东青能动力股份有限公司 | Turbine rotary partition board extracting steam at middle part and inletting steam at periphery |
| CN109653807A (en) * | 2018-11-30 | 2019-04-19 | 东方电气集团东方汽轮机有限公司 | A kind of filling device |
| CN109653807B (en) * | 2018-11-30 | 2021-12-21 | 东方电气集团东方汽轮机有限公司 | Steam compensating device |
| CN112832875A (en) * | 2021-02-03 | 2021-05-25 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
| CN112832875B (en) * | 2021-02-03 | 2022-08-30 | 东方电气集团东方汽轮机有限公司 | Steam supplementing cavity structure of steam turbine cylinder |
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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 |
Granted publication date: 20120822 Termination date: 20151219 |
|
| EXPY | Termination of patent right or utility model |