CN221002864U - Fast-assembling formula centripetal turbine structure - Google Patents
Fast-assembling formula centripetal turbine structure Download PDFInfo
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- CN221002864U CN221002864U CN202322980143.0U CN202322980143U CN221002864U CN 221002864 U CN221002864 U CN 221002864U CN 202322980143 U CN202322980143 U CN 202322980143U CN 221002864 U CN221002864 U CN 221002864U
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- 210000004907 gland Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The utility model relates to a fast-assembled centripetal turbine structure, which comprises: the volute is provided with a volute cavity, a steam inlet is formed in the volute, and the steam inlet is communicated with the volute cavity; the guide cylinder is detachably connected in the volute cavity; the nozzle is detachably connected to the guide cylinder; the outer wall of the nozzle is connected with the inner wall of the volute cavity to divide the volute cavity into a steam inlet cavity and a steam outlet cavity; the air outlet end of the nozzle faces the air outlet cavity; the impeller is arranged in the steam outlet cavity; the impeller can rotate relative to the steam outlet cavity; the blade part of the impeller is matched with the air outlet end of the nozzle. After adopting above-mentioned structure, its beneficial effect is: the requirements of each gap are met by only adjusting the relative positions of the impeller and the volute, the step of repairing and adjusting the gasket is omitted, the assembly workload is greatly reduced, the production efficiency is improved, and the cost is saved.
Description
Technical Field
The utility model belongs to the technical field of turbines, and particularly relates to a fast-assembled centripetal turbine structure.
Background
The waste heat power generation or the cascade utilization of energy is realized by adopting equipment such as a steam turbine, an expander, a screw machine and the like, wherein the steam turbine comprises an axial flow steam turbine and a centripetal turbine; the centripetal turbine has the advantages of compact structure, simple manufacturing process, low manufacturing cost, high efficiency under the design condition of smaller flow, and the like, so that the centripetal turbine can be widely applied to various energy-saving occasions.
However, when the centripetal turbine is installed, the clearance between the impeller and the static part needs to be adjusted so as to meet the design requirement, and the safety and stability of the machine during operation are ensured, and the required efficiency and power are met; these clearances are generally adjusted by fitting the adjusting gaskets of the respective components (such as the nozzle, the guide cylinder, the steam seal, etc.), the assembly work is heavy and cumbersome, and it takes a long time, and therefore, improvement is necessary.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides a quick-assembly type centripetal turbine structure, which meets the requirements of each gap by only adjusting the relative positions of an impeller and a volute, omits the step of repairing and adjusting gaskets, greatly reduces the assembly workload, improves the production efficiency and saves the cost.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
As a first aspect of the present utility model, a fast-assembling centripetal turbine structure is proposed, comprising: the volute is provided with a volute cavity, a steam inlet is formed in the volute, and the steam inlet is communicated with the volute cavity;
The guide cylinder is detachably connected in the volute cavity;
The nozzle is detachably connected to the guide cylinder; the outer wall of the nozzle is connected with the inner wall of the volute cavity to divide the volute cavity into a steam inlet cavity and a steam outlet cavity; the air outlet end of the nozzle faces the air outlet cavity;
The impeller is arranged in the steam outlet cavity; the impeller can rotate relative to the steam outlet cavity; the blade part of the impeller is matched with the air outlet end of the nozzle.
Alternatively, a first clearance channel is formed between the outer wall of the guide cylinder and the surface of the blade part of the impeller.
Alternatively, a first distance is formed between the end surface of the vane portion of the impeller and the reference surface of the volute.
Optionally, a steam seal is arranged on the end face of the volute close to the blade disc body of the impeller.
Alternatively, a second clearance channel is formed between the end face of the blade disc body of the impeller and the surface of the steam seal.
Optionally, a steam exhaust flange is connected between the guide cylinder and the volute, and a mounting hole matched with the guide cylinder is formed in the middle of the steam exhaust flange.
Optionally, a connection portion for connecting the guide cylinder is formed in the volute.
Alternatively, the middle through hole of the guide cylinder is used as a steam outlet.
The quick-assembling centripetal turbine structure has the beneficial effects that: the requirements of each gap are met by only adjusting the relative positions of the impeller and the volute, the step of repairing and adjusting the gasket is omitted, the assembly workload is greatly reduced, the production efficiency is improved, and the cost is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic structural view of a fast-assembling centripetal turbine structure of the present utility model;
Fig. 2 is a partial schematic view of fig. 1 at a.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. 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.
A fast-assembling centripetal turbine structure according to one embodiment of the application, as shown in fig. 1-2, comprises: the spiral case 1, wherein the spiral case 1 is provided with a spiral case cavity 11, a steam inlet is arranged on the spiral case 1, and the steam inlet is communicated with the spiral case cavity 11;
The guide cylinder 2 is detachably connected in the volute cavity 11; a connecting part 113 for connecting the guide cylinder 2 is formed in the volute cavity 11;
A nozzle 3 detachably connected to the guide cylinder 2; the outer wall of the nozzle 3 is connected with the inner wall of the volute 11 to divide the volute 11 into a steam inlet cavity 111 and a steam outlet cavity 112; the air outlet end of the nozzle 3 faces the air outlet cavity 112; the middle through hole of the guide cylinder 2 is used as a steam outlet; it should be noted that, the nozzle 3 is integrally in a ring structure, and a plurality of air outlet ends are arranged on the nozzle 3 at intervals, the air outlet ends of the nozzle 3 face the air outlet cavity 112, and the air outlet ends of the nozzle 3 are designed to form angles with the vane parts of the impeller 4, so that the vane parts of the impeller 4 can be conveniently sprayed with air, and the impeller 4 can rotate relative to the volute 1;
The impeller 4 is arranged in the steam outlet cavity 112; the impeller 4 is rotatable relative to the steam outlet cavity 112; the blade part of the impeller 4 is matched with the air outlet end of the nozzle 3; it should be noted that the impeller 4 is connected with the rotating shaft 5 of the generator, and the impeller 4 rotates relative to the volute 1 under the action of steam, so as to drive the rotating shaft 5 of the generator to rotate, thereby realizing the power generation function of the generator; one end of the rotating shaft 5 passes through the volute 1 and is positioned in the steam outlet cavity 112, the impeller 4 is connected to one end of the rotating shaft 5, and at the moment, the impeller 4 is positioned in the steam outlet cavity 112;
A first clearance channel a is formed between the outer wall of the guide cylinder 2 and the surface of the blade part 41 of the impeller 4, as shown in fig. 2;
A first distance b is formed between the end surface of the vane part 41 of the impeller 4 and the reference surface of the volute 11, as shown in fig. 2;
In order to make the clearance value between the impeller 4 and the worm cavity 11 in a preset range, the end surface of the worm cavity 11, which is close to the impeller 4, of the blade disc body is provided with a steam seal 8, the steam seal 8 is a device which is arranged between a turbine motor and a static part and used for reducing or preventing steam from leaking out and vacuum side air from leaking in, the device is the prior art, and the structure is not repeated; a second clearance channel c is formed between the end surface of the blade disc 42 of the impeller 4 and the surface of the gland seal 8, as shown in fig. 2.
It should be noted that, in this embodiment, the allowable deviation of the gap value of the first gap channel a, the first distance b or the second gap channel c is within ±0.1mm of the preset range value, and since the allowable deviation of each gap value is within ±0.1mm, for example, the machining error of the axial installation dimension of each component is controlled within ±0.02, the required gap value can be adjusted by this scheme without reworking and repair.
In this embodiment, in the rotation process of the impeller 4, the scroll 1 and the guide cylinder 2 are stationary, the gap values of the first gap channel a, the first distance b or the second gap channel c need to be controlled within the deviation range of the preset value respectively, the impeller 4 with too small gap value is collided with the scroll 1 or the guide cylinder 2, and the too large gap value air flow will not pass through the flow passage of the vane portion 41 of the impeller 4 and will leak from the first gap channel a, the first distance b or the second gap channel c to be wasted.
In order to ensure better stability after the guide cylinder 2 and the volute 1 are installed, a steam exhaust flange 9 is connected between the guide cylinder 2 and the volute 1, and an installation hole matched with the guide cylinder 2 is formed in the middle of the steam exhaust flange 9.
When assembled, as shown in fig. 1-2, the specific steps are as follows:
The steam seal 8 is arranged in a volute cavity 11 of the volute 1;
Preassembling the nozzle 3 and the guide cylinder 2 together, and checking the axial dimensions of the nozzle and the guide cylinder;
The impeller 4 is installed in the volute chamber 11 of the volute 1, the second clearance channel c between the end surface of the blade disc 42 of the impeller 4 and the surface of the steam seal 8, and the first distance b between the end surface of the blade portion 41 of the impeller 4 and the reference surface of the volute chamber 11 are adjusted within a preset range,
After the gap value of the second gap channel c and the first distance b is adjusted to be within a preset range; then the pre-assembled nozzle 3 and the guide cylinder 2 are filled, whether a first clearance channel a between the outer wall of the guide cylinder 2 and the surface of the blade part 41 of the impeller 4 is within a preset range is checked, and if not, the axial positions of the pre-assembled nozzle 3 and the guide cylinder 2 are finely adjusted; after the gap values of the first gap channel a, the first distance b and the second gap channel c are all adjusted to be within a preset range, fixing the axial position of the volute 1 on the base by using a pin or a key; since the allowable deviation of the clearance values of the first clearance channel a, the first distance b or the second clearance channel c is within +/-0.1 mm of a preset range, and since the allowable deviation of each clearance value is within +/-0.1 mm, if the machining error of the axial installation dimension of each component is controlled within +/-0.02, the clearance value can be adjusted to the required clearance value by the scheme without reworking and repair.
When the steam turbine works, steam flow firstly enters the worm cavity 11 from the steam inlet, flows towards the shaft center of the impeller 4 through the nozzle 3, drives the impeller 4 to rotate, and then turns 90 degrees to be discharged from the middle through hole of the guide cylinder 2.
In the above, the relative positions of the impeller and the volute are only adjusted to meet the requirements of each gap, so that the step of repairing and adjusting the gasket is omitted, the assembly workload is greatly reduced, the production efficiency is improved, and the cost is saved.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly as such and may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (8)
1. A fast-assembling centripetal turbine structure, comprising: the volute is provided with a volute cavity, a steam inlet is formed in the volute, and the steam inlet is communicated with the volute cavity;
The guide cylinder is detachably connected in the volute cavity;
The nozzle is detachably connected to the guide cylinder; the outer wall of the nozzle is connected with the inner wall of the volute cavity to divide the volute cavity into a steam inlet cavity and a steam outlet cavity; the air outlet end of the nozzle faces the air outlet cavity;
The impeller is arranged in the steam outlet cavity; the impeller can rotate relative to the steam outlet cavity; the blade part of the impeller is matched with the air outlet end of the nozzle.
2. A fast-assembling centripetal turbine structure according to claim 1, wherein a first clearance channel is formed between an outer wall of said guide casing and a surface of a blade portion of said impeller.
3. A fast-assembling centripetal turbine structure according to claim 1 or 2, wherein a first distance is formed between an end surface of a blade portion of said impeller and a reference surface of a volute.
4. A fast-assembling centripetal turbine structure according to claim 1, wherein a steam seal is provided on an end surface of said volute adjacent to a blade disk of said impeller.
5. A fast-assembling centripetal turbine structure according to claim 4, wherein a second clearance channel is formed between an end surface of a blade disc of said impeller and a surface of a gland.
6. A fast-assembling centripetal turbine structure according to claim 1, wherein a steam exhaust flange is connected between the guide cylinder and the volute, and a mounting hole matched with the guide cylinder is formed in the middle of the steam exhaust flange.
7. A fast-assembling centripetal turbine structure according to claim 1 or 6, wherein said volute cavity has a connection formed therein for connection of a guide casing.
8. A fast-assembling centripetal turbine structure according to claim 1, wherein a central through-hole of said guide casing serves as a steam outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322980143.0U CN221002864U (en) | 2023-11-03 | 2023-11-03 | Fast-assembling formula centripetal turbine structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322980143.0U CN221002864U (en) | 2023-11-03 | 2023-11-03 | Fast-assembling formula centripetal turbine structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221002864U true CN221002864U (en) | 2024-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322980143.0U Active CN221002864U (en) | 2023-11-03 | 2023-11-03 | Fast-assembling formula centripetal turbine structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221002864U (en) |
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2023
- 2023-11-03 CN CN202322980143.0U patent/CN221002864U/en active Active
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