CN204716613U - Turriform gas turbine blower wheeling disk structure - Google Patents
Turriform gas turbine blower wheeling disk structure Download PDFInfo
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- CN204716613U CN204716613U CN201520277308.0U CN201520277308U CN204716613U CN 204716613 U CN204716613 U CN 204716613U CN 201520277308 U CN201520277308 U CN 201520277308U CN 204716613 U CN204716613 U CN 204716613U
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- epiplastron
- gas turbine
- bottom web
- wheel disc
- axial
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Abstract
The utility model relates to gas turbine blower wheeling disk structure design field, provides a kind of turriform gas turbine blower wheeling disk structure.This wheeling disk structure comprises wheel disc body, and wheel disc body is overall in disk-like structure, comprises center hole, core, bottom web, changeover portion, intermediate portion, epiplastron and exterior section successively from the inside to the outside; Bottom web and epiplastron are from the inside to the outside in gradually closing formula structure, and the axial both sides of bottom web corresponding be in the same conical surface respectively with the axial both sides of epiplastron.Centrifugal force is increased to core gradually by exterior section, and the epiplastron of wheel disc body and the thickness of bottom web increase thereupon gradually, and the material property of wheel disc body is fully used; The core of wheel disc body, intermediate portion and the centrifugal force bang path of exterior section overlap with the centrifugal force bang path of moving vane, and wheel disc body, under High Rotation Speed state, evenly outwards expands, and axial bending distortion obtains effective suppression.
Description
Technical field
The utility model relates to gas turbine blower wheeling disk structure design field, provides a kind of turriform gas turbine blower wheeling disk structure especially.
Background technique
In the heavy duty gas turbine of ground, adopt the equally distributed axial pull bar of peripheral hoop independently will be connected into entirety by wheel disc, form compressor rotor.Compressor rotor High Rotation Speed pressurized air, becomes gas internal energy by changes mechanical energy, promotes air pressure, speed and temperature.The air of the high pressure obtained thus, high speed is transported to firing chamber, burns with fuel mix.
On the one hand, the air in gas compressor is by import to outlet, and temperature constantly promotes, and the material property of wheel disc is declined thereupon gradually.Under the acting in conjunction of wheel disc self centrifugal force and moving vane centrifugal force, ensureing that wheel disc has enough Strength Safety nargin, do not break or fatigue ruption, is a difficulty of gas turbine blower wheel disc design.
On the other hand, in order to promote gas compressor performance, avoid touching mill, careful design is carried out to the seal clearance between compressor rotor and stator, be gas turbine blower wheel disc design another difficulty.One of its reason is: wheel disc is High Rotation Speed in high temperature environments, while expanding, also can because of the effect of centrifugal moment of flexure, there is axial bending distortion, make wheel disc sealing flange deflection, ledge surface after inclination and the gap between the stator surface do not tilted uneven, be unfavorable for gas seal.
Traditional ground heavy duty gas turbine compressor disk, is furnished with: grooving, flange, through hole, with satisfied accommodation moving vane, transmitting torque, Functional Requirement through pull bar.Be subject to the restriction of these structure characteristics, compressor disk directly can not apply complete equal thickness structure or desirable cone structure.
Current ground heavy duty gas turbine compressor disk structure is: between grooving, flange, through hole, arrange that independently disc connects, and disc can be equal thickness disc or taper disc.The restriction relation of two sections of physical dimensions independently between disc and position can not make centrifugal load bang path unified, produce centrifugal moment of flexure, the flexural stress of wheel disc extra reception reduces Strength Safety nargin, and the bending deflection that centrifugal moment of flexure causes weakens sealing effect.In addition, adopt the wheel disc of equal thickness web pattern, structure bulky, can not give full play to material property, there is the problem of waste material.
Model utility content
(1) technical problem that will solve
To be solved in the utility model be the compressor disk of existing gas turbine under centrifugal Moment, problem, the equal thickness web structure of the sealing effect difference that the problem that the Strength Safety nargin that flexural stress causes is little, bending deflection cause are heavy, the problem of waste material.
(2) technological scheme
For solving the problems of the technologies described above, the utility model provides a kind of turriform gas turbine blower wheeling disk structure, comprise wheel disc body, described wheel disc body is overall in disk-like structure, comprises center hole, core, bottom web, changeover portion, intermediate portion, epiplastron and exterior section successively from the inside to the outside;
The Inner edge of the more described bottom web of described core is thick, for splicing axially;
The outer rim of the more described bottom web of described changeover portion is thick, and described changeover portion axial running through offers multiple penetration hole for wearing peripheral pull bar;
The Inner edge of the more described changeover portion of described intermediate portion and epiplastron is thick, for the transmitting torque by axial contact friction;
The outer rim of the more described epiplastron of described exterior section is thick, and the outer wall circumference of described exterior section is laid with multiple grooving for connecting moving vane, and axial both sides are respectively equipped with the air inlet side sealing flange for contacting with seal ring seal and side sealing flange of giving vent to anger;
Described bottom web and epiplastron are from the inside to the outside in gradually closing formula structure, and the axial both sides of described bottom web corresponding be in the same conical surface respectively with the axial both sides of described epiplastron.
Preferably, the angle between the axial both sides conical surface of described bottom web is 1-10 °.
Preferably, the angle between the axial both sides conical surface of described bottom web is 1-6 °.
Preferably, between described core and described bottom web be round-corner transition.
Preferably, between described bottom web and described changeover portion be round-corner transition.
Preferably, between described changeover portion and described intermediate portion be round-corner transition.
Preferably, between described intermediate portion and described epiplastron be arc transition.
Preferably, between described epiplastron and described exterior section be round-corner transition.
Preferably, the side of described core is provided with air inlet side locating flange, and opposite side is provided with side sealing flange of giving vent to anger, and the diameter of the diameter of the outer rim of described air inlet side locating flange and the Inner edge of described side locating flange of giving vent to anger adapts.
(3) beneficial effect
A kind of turriform gas turbine blower wheeling disk structure that the utility model provides, comprise wheel disc body, wheel disc body is overall in disk-like structure, comprises center hole, core, bottom web, changeover portion, intermediate portion, epiplastron and exterior section successively from the inside to the outside; Bottom web and epiplastron are from the inside to the outside in gradually closing formula structure, and the axial both sides of bottom web corresponding be in the same conical surface respectively with the axial both sides of epiplastron.Centrifugal force is increased to core gradually by exterior section, and the epiplastron of wheel disc body and the thickness of bottom web increase thereupon gradually, and the material property of wheel disc body is fully used; The core of wheel disc body, intermediate portion and the centrifugal force bang path of exterior section overlap with the centrifugal force bang path of moving vane, and wheel disc body, under High Rotation Speed state, evenly outwards expands, and axial bending distortion obtains effective suppression.
Accompanying drawing explanation
Fig. 1 is that the axle of a kind of turriform gas turbine blower wheeling disk structure of the utility model embodiment surveys view;
Fig. 2 be a kind of turriform gas turbine blower wheeling disk structure of the utility model embodiment meridian plane schematic diagram;
Fig. 3 is the seal clearance view after obvious bending deflection occurs wheel disc body of the prior art;
Fig. 4 is the wheel disc body of the present embodiment seal clearance view when there is not obvious bending deflection.
Reference character:
10, bottom web; 20, epiplastron; 42, core; 44, intermediate portion; 46, exterior section; 52, air inlet side locating flange; 53, to give vent to anger side locating flange; 56, air inlet side sealing flange; 57, to give vent to anger side sealing flange; 61, grooving; 62, penetration hole; 63, center hole; 76, air inlet side seal clearance; 77, to give vent to anger side sealing gap; 86, air inlet side sealing stator part; 87, to give vent to anger side sealing stator part.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
In description of the present utility model, except as otherwise noted, term " on ", D score, " top ", " bottom ", the orientation of the instruction such as " longitudinal direction " or state relation be based on orientation shown in the drawings or state relation, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
A kind of turriform gas turbine blower wheeling disk structure that the utility model embodiment provides, comprise wheel disc body, wheel disc body is overall in disk-like structure, comprises center hole 63, core 42, bottom web 10, changeover portion, intermediate portion 44, epiplastron 20 and exterior section 46 from the inside to the outside successively; Core 42 is thick compared with the Inner edge of bottom web 10, for splicing axially; Changeover portion is thick compared with the outer rim of bottom web 10, and changeover portion axial running through offers multiple penetration hole 62 for wearing peripheral pull bar; Intermediate portion 44 is thick compared with the Inner edge of changeover portion and epiplastron 20, for the transmitting torque by axial contact friction; Exterior section 46 is thick compared with the outer rim of epiplastron 20, and the outer wall of exterior section 46 circumference is laid with multiple grooving 61 for connecting moving vane, and axial both sides are respectively equipped with air inlet side sealing flange 56 for contact with seal ring seal and give vent to anger side sealing flange 57; Bottom web 10 and epiplastron 20 are from the inside to the outside in gradually closing formula structure, and the axial both sides of bottom web 10 corresponding be in the same conical surface respectively with the axial both sides of epiplastron 20, namely the longitudinal cross-section of bottom web 10 and epiplastron 20 is all in isosceles trapezoidal structure, and the both sides of the edge in the cross section of the longitudinal direction of bottom web 10 corresponding with the both sides of the edge conllinear in the cross section of epiplastron 20.
Centrifugal force is increased gradually by exterior section 46 to core 42, and the epiplastron 20 of wheel disc body and the thickness of bottom web 10 increase thereupon gradually, and the material property of wheel disc body is fully used; The core 42 of wheel disc body, intermediate portion 44 and the centrifugal force bang path of exterior section 46 overlap with the centrifugal force bang path of moving vane, and wheel disc body, under High Rotation Speed state, evenly outwards expands, and axial bending distortion obtains effective suppression.
In addition, as shown in Figure 3, after there is obvious bending deflection in the wheel disc of prior art, there is deflection in air inlet side sealing flange 56 and side sealing flange 57 of giving vent to anger, the air inlet side seal clearance 76 sealing stator part 86 with air inlet side presents " dehiscing " phenomenon, and the side sealing gap 77 of giving vent to anger of giving vent to anger between side sealing stator part 87 presents " closing " phenomenon, be unfavorable for gas seal; And in the present embodiment, as shown in Figure 4, when obvious bending deflection does not appear in wheel disc body, deflection does not occur for air inlet side sealing flange 56 and side sealing flange 57 of giving vent to anger, be therefore conducive to gas seal.
Wherein, under the conventional operating state of gas turbine, the factors such as comprehensive centrifugal force and material stiffness, through a large amount of structural finite element analysis and stress test, angle between the axial both sides conical surface of bottom web 10 is defined as 1-10 ° by the present embodiment, is preferably 1-6 °.
Wherein, round-corner transition is between core 42 and bottom web 10, between bottom web 10 and changeover portion, between changeover portion and intermediate portion 44, between intermediate portion 44 and epiplastron 20 and between epiplastron 20 and exterior section 46, round-corner transition can bear the distribution of stress between different-thickness section uniformly, can avoid the phenomenon occurring that stress is concentrated.
Wherein, the side of core 42 is provided with air inlet side locating flange 52, opposite side is provided with side locating flange 53 of giving vent to anger, the diameter of the outer rim of air inlet side locating flange 52 adapts with the diameter of the Inner edge of side locating flange 53 of giving vent to anger, when two wheel disc body shaft are to docking, realize concentric by air inlet side locating flange 52 and the grafting of side locating flange 53 of giving vent to anger to locate, after two wheel disc bodies are docked by air inlet side locating flange 52 and side locating flange 53 of giving vent to anger, the intermediate portion 44 of two wheel disc bodies should contact with each other, and there is certain relative pressure, by frictional force transmitting torque.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and replacement, these improve and replace and also should be considered as protection domain of the present utility model.
Claims (9)
1. a turriform gas turbine blower wheeling disk structure, it is characterized in that, comprise wheel disc body, described wheel disc body is overall in disk-like structure, comprises center hole (63), core (42), bottom web (10), changeover portion, intermediate portion (44), epiplastron (20) and exterior section (46) from the inside to the outside successively;
The Inner edge of described core (42) more described bottom web (10) is thick, for splicing axially;
The outer rim of the more described bottom web of described changeover portion (10) is thick, and described changeover portion axial running through offers multiple penetration hole (62) for wearing peripheral pull bar;
The Inner edge of described intermediate portion (44) more described changeover portion and epiplastron (20) is thick, for the transmitting torque by axial contact friction;
The outer rim of described exterior section (46) more described epiplastron (20) is thick, the outer wall circumference of described exterior section (46) is laid with multiple grooving (61) for connecting moving vane, and axial both sides are respectively equipped with the air inlet side sealing flange (56) for contacting with seal ring seal and side sealing flange (57) of giving vent to anger;
Described bottom web (10) and epiplastron (20) are from the inside to the outside in gradually closing formula structure, and the axial both sides of described bottom web (10) corresponding be in the same conical surface respectively with the axial both sides of described epiplastron (20).
2. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, the angle between the axial both sides conical surface of described bottom web (10) is 1-10 °.
3. turriform gas turbine blower wheeling disk structure according to claim 2, is characterized in that, the angle between the axial both sides conical surface of described bottom web (10) is 1-6 °.
4. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, is round-corner transition between described core (42) and described bottom web (10).
5. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, is round-corner transition between described bottom web (10) and described changeover portion.
6. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, is round-corner transition between described changeover portion and described intermediate portion (44).
7. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, is arc transition between described intermediate portion (44) and described epiplastron (20).
8. turriform gas turbine blower wheeling disk structure according to claim 1, is characterized in that, is round-corner transition between described epiplastron (20) and described exterior section (46).
9. turriform gas turbine blower wheeling disk structure according to claim 1, it is characterized in that, the side of described core (42) is provided with air inlet side locating flange (52), opposite side is provided with side sealing flange (53) of giving vent to anger, and the diameter of the diameter of the outer rim of described air inlet side locating flange (52) and the Inner edge of described side locating flange (53) of giving vent to anger adapts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277308.0U CN204716613U (en) | 2015-04-30 | 2015-04-30 | Turriform gas turbine blower wheeling disk structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520277308.0U CN204716613U (en) | 2015-04-30 | 2015-04-30 | Turriform gas turbine blower wheeling disk structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716613U true CN204716613U (en) | 2015-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520277308.0U Active CN204716613U (en) | 2015-04-30 | 2015-04-30 | Turriform gas turbine blower wheeling disk structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716613U (en) |
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2015
- 2015-04-30 CN CN201520277308.0U patent/CN204716613U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Turriform gas turbine compressor rim plate structure Effective date of registration: 20161104 Granted publication date: 20151021 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191211 Granted publication date: 20151021 Pledgee: Tsinghua Holdings Co., Ltd. Pledgor: Beijing Huatsing Gas Turbine & IGCC Technology Co., Ltd. Registration number: 2016990000853 |