TURBINE GUIDE APPARATUS WITH BLADED GUIDING DEVICE

Abstract

A turbine guide apparatus for a turbine or a compressor with a rotor having a number of guide blades arranged on the rotor in the circumferential direction following one another at a non-equidistant, irregular interval .sub.i,i+1, wherein .sub.i,i+1 each defines the interval of two guide blades directly following one another in the circumferential direction.

Claims

1. A turbine guide apparatus for a turbine or a compressor comprising: a rotor; and a number n of guide blades arranged on the rotor following one another in a circumferential direction at a non-equidistant, irregular interval .sub.i, i+1, wherein .sub.i, i+1 in each case defines the irregular interval of two guide blades directly following one another in the circumferential direction.

2. The turbine guide apparatus according to claim 1, wherein the n guide blades are identically designed in their shape.

3. The turbine guide apparatus according to claim 1, wherein the n guide blades are designed distinct in their shape at least in a part region.

4. The turbine guide apparatus according to claim 1, wherein a plurality of the irregular intervals .sub.i, i+1 of two respective guide blades directly following one another in the circumferential direction is distinct.

5. The turbine guide apparatus according to claim 1, wherein all irregular intervals .sub.i,i+1 of in each case two guide blades directly following one another in the circumferential direction are distinct, as a result of which a division pattern in the circumferential direction with different angular division dimensions is obtained.

6. The turbine guide apparatus according to any claim 1, wherein a change of the irregular interval .sub.i,i+1 of in each case two guide blades to a respective following or preceding interval is unsteady.

7. The turbine guide apparatus according to claim 6, wherein the change of the irregular interval .sub.i,i+1 of in each case two guide blades relative to one another to the irregular interval .sub.i1,i of the respective preceding guide blade or the irregular interval .sub.i+1,i+2 to the respective following guide blade is increasing or decreasing.

8. The turbine guide apparatus according to claim 1, wherein a respective irregular interval .sub.i, i+1 of a respective two guide blades in the circumferential direction is determined according to a predetermined division plan so that upon an oscillation excitation during an operation of the turbine guide apparatus a targeted division of a periodically harmonic oscillation excitation into its subsidiary orders occurs.

9. A turbine comprising: a turbine guide apparatus comprising: a rotor; and a number n of guide blades arranged on the rotor following one another in the circumferential direction at a non-equidistant, irregular interval .sub.i, i+1, wherein .sub.i,i+1 in each case defines the irregular interval of two guide blades directly following one another in the circumferential direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other advantageous further developments of the invention are characterized in the subclaims or are shown in more detail by way of the FIGURES together with the description of the preferred embodiment of the invention. There it shows:

[0015] The FIGURE is an exemplary schematic embodiment of a turbine guide apparatus according to one aspect of the invention.

DETAILED DESCRIPTION OF THE PRESENTLY PREFERRED EMBODIMENTS

[0016] In the following, the invention is explained in more detail making reference to the FIGURE, wherein in the FIGURE a merely exemplary plan view of a turbine guide apparatus 1 with the division positions T1 to T15 is shown, which represent the mounting positions of the guide blades L1, L2, . . . , L15.

[0017] The turbine guide apparatus 1 is designed for a turbine or a compressor and comprises a rotor 2 with a hub that is not shown in more detail in the center Z of the rotor 2. The 15 guide blades L1, L2, . . . , Li, Li+1, . . . L15, are consecutively arranged on the rotor 2 in the circumferential direction at a non-equidistant, irregular interval .sub.i,i+1.

[0018] Here, .sub.i,i+1 each defines the relative interval in the circumferential direction along an arc of a circle line of two guide blades Li, Li+1 directly following one another in the circumferential direction.

[0019] As is further evident in the FIGURE, all intervals .sub.i,i+1 of each two guide blades Li, Li+1 immediately following one another in the circumferential direction are distinct, as a result of which a division pattern in the circumferential direction with different angular division dimensions is obtained. Nevertheless, certain guide blade intervals can also occur multiple times, preferentially however always with at least one different guide blade interval of two guide blades located in between. Accordingly, the interval between the position of the guide blade L3 and the position of the guide blade L4 can be equal to the interval between the position of the guide blade L9 and the position of the guide blade L10.

[0020] In its embodiment, the invention is not limited to the preferred exemplary embodiments stated above. In this regard, the turbine guide apparatus is suitable both for a turbine or, embodied as compressor guide apparatus, for a compressor. On the contrary, a number of versions is conceivable which make use of the shown solution even with embodiments of a fundamentally different type.

[0021] Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.