CN221322488U - Adjustable through-flow cross section device of steam turbine - Google Patents
Adjustable through-flow cross section device of steam turbine Download PDFInfo
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- CN221322488U CN221322488U CN202420090650.9U CN202420090650U CN221322488U CN 221322488 U CN221322488 U CN 221322488U CN 202420090650 U CN202420090650 U CN 202420090650U CN 221322488 U CN221322488 U CN 221322488U
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- impeller
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- baffle
- shell
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- 238000005192 partition Methods 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 210000004907 gland Anatomy 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 2
- 125000003003 spiro group Chemical group 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses a turbine adjustable through-flow section device, which comprises a cylinder body, wherein a rotating shaft is arranged in the cylinder body in a rotating way, a front gland seal and a rear gland seal are respectively arranged at two ends of the cylinder body corresponding to the rotating shaft in the cylinder body, an impeller is arranged in the rotating way corresponding to the rotating shaft in the cylinder body, the impeller comprises a first impeller, a second impeller and a third impeller, a partition plate is arranged between the impellers, a plurality of flow passages are arranged at the outer edge of the end face of the partition plate in a penetrating way, turning plates are respectively arranged in the flow passages in a rotating way, and an adjusting mechanism for driving the turning plates to rotate is arranged in the partition plate. Set up the baffle between the impeller, set up logical groove between the baffle, the normal inside rotates and sets up turns over the board, through adjusting the board angle of turning over, adjusts the convection area to can rationally adjust the convection area according to steam turbine operating mode.
Description
Technical Field
The utility model relates to the technical field of steam turbines, in particular to a device with an adjustable through flow section for a steam turbine.
Background
The steam turbine is an external combustion rotary machine that converts thermal energy of steam into mechanical work. After entering the steam turbine, the steam from the boiler sequentially passes through a series of annularly arranged nozzles and blades, and the heat energy of the steam is converted into mechanical energy for rotating the rotor of the steam turbine.
The existing turbine is designed according to national standard parameters or according to owner steam parameters and use requirements, and the main turbine design is mainly to determine through flow parameters and the like. In the present case, after the turbine is designed and manufactured, the flow area is determined and cannot be adjusted during operation or maintenance. In the case of a steam turbine, particularly in the case of large periodic power variation, for example, in winter heating full-load operation, in summer only for a half-load or less than half-load operation of a plant, or in periodic full-load half-load operation, the steam turbine is low in efficiency compared with the full-load steam turbine due to the fact that the flow area is designed according to economic working conditions or rated working conditions and the whole service cycle of the steam turbine such as the operation process or the shutdown process until the scrapping period is not adjustable, so that the steam turbine still operates according to the full-load flow area under the condition of half-load or low-load operation, the efficiency of the steam turbine is low by about 10 percentage points compared with the efficiency of the steam turbine under the condition of full load, the economy of the steam turbine is affected, and the current energy conservation, emission reduction and high efficiency are contrary.
Therefore, there is an urgent need to devise a turbine that can adjust the flow area to improve efficiency when operating at half load or other conditions below rated load.
Disclosure of utility model
The utility model aims to provide a turbine through-flow section adjustable device for solving the problems in the background technology.
In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a turbine adjustable through-flow cross-section device, includes the cylinder body, the inside rotation of cylinder body is equipped with the pivot, the inside of cylinder body corresponds the pivot both ends and is provided with preceding gland seal and back gland seal respectively, the inside rotation that the pivot corresponds the cylinder body is equipped with the impeller, the impeller includes first impeller, second impeller and third impeller, wherein, fixedly connected with baffle respectively between first impeller and the second impeller and between second impeller and the third impeller, the baffle is circular plate, just the terminal surface outer edge department of baffle runs through and is equipped with a plurality of runners, the inside of runner is rotated respectively and is provided with turns over the board, the inside of baffle is equipped with drive and turns over board pivoted adjustment mechanism.
According to the technical scheme, adjustment mechanism including set up in the inside annular cavity of baffle, annular cavity with the coaxial setting of baffle, just the annular cavity is located the outside of runner, turn over the board including rotate set up in the inside dwang of runner and fixed connection in the plate of dwang outer peripheral face department, the dwang extends along the radial direction of baffle and sets up, the one end fixedly connected with gear of baffle is kept away from to the dwang, just the gear is located the inside of annular cavity, the inside rotation of annular cavity is equipped with the swivel becket, a side surface of swivel becket be equipped with gear engaged with crown tooth.
According to the technical scheme, the outer peripheral surface of the partition plate is fixedly connected with the shell, the arc-shaped groove penetrates through the outer wall of the partition plate corresponding to the shell, and the transmission rod is fixedly connected to the outer peripheral surface of the rotating ring corresponding to the arc-shaped groove.
According to the technical scheme, the transmission rod is kept away from the one end fixed surface who rotates the ring and is connected with the lug, the inside activity of shell is equipped with the fly leaf, the terminal surface of fly leaf runs through and is equipped with the bar groove, the lug slide set up in the inside in bar groove, the inside rotation of shell is equipped with drive screw, the spiro union has movable sleeve on the drive screw, the fly leaf fixed connection in on the outer peripheral face of movable sleeve.
According to the technical scheme, the outer peripheral surface of the movable sleeve is fixedly connected with the sliding block, and the inner surface of the shell is provided with the sliding groove which is in sliding connection with the sliding block.
Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the cylinder body is provided, the rotatable rotating shaft is arranged in the cylinder body, and the rotating shaft is provided with the first impeller, the second impeller and the third impeller. Set up the baffle between the impeller, set up logical groove between the baffle, the normal inside rotates and sets up turns over the board, through adjusting the board angle of turning over, adjusts the convection area to can rationally adjust the convection area according to steam turbine operating mode.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a schematic view of a front cross-sectional structure of the present utility model;
FIG. 2 is a schematic view of the left-hand construction of the separator of the present utility model;
FIG. 3 is a schematic view of a left-hand cross-sectional structure of a separator of the present utility model;
FIG. 4 is a schematic diagram of the driving mechanism of the present utility model;
FIG. 5 is an enlarged schematic view of the structure of FIG. 1 at A;
in the figure: the device comprises a 1-cylinder body, a 2-rotating shaft, a 3-front steam seal, a 4-rear steam seal, a 5-impeller, a 6-partition plate, a 7-runner, an 8-turning plate, a 9-annular cavity, a 10-gear, an 11-rotating ring, a 12-shell, a 13-arc-shaped groove, a 14-transmission rod, a 15-lug, a 16-movable plate, a 17-strip-shaped groove, a 18-transmission screw, a 19-movable sleeve and a 20-slide block.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides the following technical solutions: the utility model provides a turbine adjustable through-flow cross-section device, includes cylinder body 1, the inside rotation of cylinder body 1 is equipped with pivot 2, the inside of cylinder body 1 corresponds pivot 2 both ends and is provided with preceding gland seal 3 and back gland seal 4 respectively, the inside rotation of pivot 2 corresponds cylinder body 1 is equipped with impeller 5, impeller 5 includes first impeller, second impeller and third impeller, wherein, fixedly connected with baffle 6 respectively between first impeller and the second impeller and between second impeller and the third impeller, baffle 6 is circular plate, as shown in fig. 2, the terminal surface outer edge department of baffle 6 runs through and is equipped with a plurality of runners 7, the inside of runner 7 rotates respectively and is provided with turns over board 8, the inside of baffle 6 is equipped with the adjustment mechanism that drives turns over board 8 rotation, adjustment mechanism steerable turns over board 8 rotation, the open area of runner 7 adjusts to can be according to the deflection angle of adjusting turns over board 8, the runner flow area adjusts, thereby can carry out the adaptability according to the turbine operating mode;
Specifically, as shown in fig. 3, the adjusting mechanism includes an annular cavity 9 disposed inside the partition 6, the annular cavity 9 is disposed coaxially with the partition 6, and the annular cavity 9 is located at the outer side of the flow channel 7, the turning plate 8 includes a turning rod rotatably disposed inside the flow channel 7, and a plate fixedly connected to the outer peripheral surface of the turning rod, the turning rod is disposed extending along the radial direction of the partition 6, one end of the turning rod, far away from the partition 6, is fixedly connected with a gear 10, a gear 10 is coaxially connected with the turning rod, and the gear 10 is located inside the annular cavity 9, a rotating ring 11 is rotatably disposed inside the annular cavity 9, and a crown tooth meshed with the gear 10 is disposed on one side surface of the rotating ring 11, so that when one turning plate 8 rotates, the turning plate 8 is driven to rotate in the corresponding gear 10 under the action of the crown tooth, and the turning plate 8 is driven to rotate synchronously inside the corresponding flow channel 7, and the area of the flow channel is adjusted synchronously;
Specifically, the outer peripheral surface of the partition plate 6 is fixedly connected with a housing 12, an arc groove 13 is penetrated and arranged at the position, corresponding to the housing 12, of the outer wall of the partition plate 6, and a transmission rod 14 is fixedly connected at the position, corresponding to the arc groove 13, of the outer peripheral surface of the rotating ring 11, so that a driving mechanism is arranged in the housing 12 and used for driving the transmission rod 14 to move along the arc groove 13 to drive the rotating ring 11 to rotate, and the deflection angle of the turning plate 8 can be adjusted;
Specifically, a bump 15 is fixedly connected to one end surface of the transmission rod 14 far away from the rotating ring 11, a movable plate 16 is movably arranged in the shell 12, a strip-shaped groove 17 is arranged on the end surface of the movable plate 16 in a penetrating manner, the bump 15 is slidably arranged in the strip-shaped groove 17, a transmission screw 18 is rotatably arranged in the shell 12, a movable sleeve 19 is screwed on the transmission screw 18, the movable plate 16 is fixedly connected to the outer circumferential surface of the movable sleeve 19, a knob coaxially connected with the transmission screw 18 is arranged outside the shell 12, the shell 12 penetrates through the side wall of the cylinder body 1, the transmission screw 18 is driven to rotate by rotating the knob, the movable sleeve 19 can be driven to slide along the transmission screw 18 under the action of screw thread fit, and accordingly the transmission rod 14 is driven to move by the movable plate 16;
Specifically, the outer peripheral surface of the movable sleeve 19 is fixedly connected with a sliding block 20, and the inner surface of the housing 12 is provided with a sliding groove slidingly connected with the sliding block 20, and the sliding groove extends in the same direction along the extending direction of the driving screw 18, so that when the driving screw 18 is rotated, the movable sleeve 19 does not synchronously rotate along with the driving screw 18;
When the turbine runner 7 is used, the knob is rotated to drive the driving screw 18 to rotate, the movable sleeve 19 can be driven to slide along the driving screw 18 under the action of screw thread fit, so that the movable plate 16 drives the driving rod 14 to move, the driving rod 14 drives the rotating ring 11 to rotate in the annular cavity 9 to drive the gear 10 to rotate, the gear 10 drives the corresponding turning plate 8 to synchronously rotate, the area of the runner 7 is regulated, and the flow area can be flexibly regulated according to the working condition of the turbine.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The utility model provides a turbine adjustable through-flow cross-section device, includes cylinder body (1), its characterized in that: the inside rotation of cylinder body (1) is equipped with pivot (2), the inside of cylinder body (1) corresponds pivot (2) both ends and is provided with preceding gland seal (3) and back gland seal (4) respectively, the inside rotation of cylinder body (1) is corresponding to pivot (2) is equipped with impeller (5), impeller (5) are including first impeller, second impeller and third impeller, wherein, fixedly connected with baffle (6) respectively between first impeller and the second impeller and between second impeller and the third impeller, baffle (6) are circular plate, just the terminal surface outer edge department of baffle (6) runs through and is equipped with a plurality of runner (7), the inside of runner (7) is rotated respectively and is provided with turns over board (8), the inside of baffle (6) is equipped with the rotatory adjustment mechanism of drive turning board (8).
2. The turbine variable flow cross-section apparatus of claim 1, wherein: the adjusting mechanism comprises an annular cavity (9) arranged inside the partition board (6), the annular cavity (9) is coaxially arranged with the partition board (6), the annular cavity (9) is located outside the flow channel (7), the turning plate (8) comprises a rotating rod arranged inside the flow channel (7) and a plate fixedly connected to the outer peripheral surface of the rotating rod, the rotating rod extends along the radial direction of the partition board (6), one end of the rotating rod away from the partition board (6) is fixedly connected with a gear (10), the gear (10) is located inside the annular cavity (9), a rotating ring (11) is arranged in the annular cavity (9), and a crown tooth meshed with the gear (10) is arranged on one side surface of the rotating ring (11).
3. The turbine variable flow cross-section apparatus of claim 2, wherein: the outer peripheral surface of the partition plate (6) is fixedly connected with a shell (12), an arc-shaped groove (13) is penetrated and arranged at the position, corresponding to the shell (12), of the outer wall of the partition plate (6), and a transmission rod (14) is fixedly connected at the position, corresponding to the arc-shaped groove (13), of the outer peripheral surface of the rotating ring (11).
4. A turbine variable flow cross-section apparatus according to claim 3, wherein: one end fixed surface that rotation ring (11) was kept away from to transfer line (14) is connected with lug (15), the inside activity of shell (12) is equipped with fly leaf (16), the terminal surface of fly leaf (16) runs through and is equipped with bar groove (17), lug (15) slide set up in the inside of bar groove (17), the inside rotation of shell (12) is equipped with drive screw (18), the spiro union has movable sleeve (19) on drive screw (18), fly leaf (16) fixed connection in on the outer peripheral face of movable sleeve (19).
5. The turbine variable flow cross-section apparatus of claim 4, wherein: the outer peripheral surface of the movable sleeve (19) is fixedly connected with a sliding block (20), and the inner surface of the shell (12) is provided with a sliding groove which is in sliding connection with the sliding block (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420090650.9U CN221322488U (en) | 2024-01-15 | 2024-01-15 | Adjustable through-flow cross section device of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420090650.9U CN221322488U (en) | 2024-01-15 | 2024-01-15 | Adjustable through-flow cross section device of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221322488U true CN221322488U (en) | 2024-07-12 |
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ID=91801155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420090650.9U Active CN221322488U (en) | 2024-01-15 | 2024-01-15 | Adjustable through-flow cross section device of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221322488U (en) |
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2024
- 2024-01-15 CN CN202420090650.9U patent/CN221322488U/en active Active
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