Device for installing and removing a component on a gas turbine

Abstract

The invention relates to a device for installing and removing a component on a gas turbine, having a rail system on which in particular a rotor can be displaced along a predetermined displacement axis, and having a terminal positioning part which is fixedly connected to the rail system. The positioning part has at least one guide portion which is designed to co-operate mechanically with a respective counterpart guide portion on the housing of the gas turbine, in order to achieve a suitable orientation of the device with respect to the housing of the gas turbine. The positioning part also has at least one connecting section which is designed in each case to form a fixed but releasable connection to a respective counterpart connecting section on the housing of the gas turbine construct.

Claims

1. A gas turbine comprising: a rail system comprising rails on which a runner is displaceable along a predefined displacement axis, and a terminal positioning part which is securely connected to the rail system, the rail system and the terminal positioning, part are parts of a device, the terminal positioning part comprises at least two guide sections, each of which is designed to mechanically cooperate with a respective mating guide section of at least two mating guide sections on a casing of the gas turbine in order to achieve a suitable orientation of the device on the casing of the gas turbine, and wherein the terminal positioning part further comprises at least one connection section designed to establish a secure vet releasable connection with a respective mating connection section on the casing of the gas turbine, wherein the terminal positioning part is designed as a connection plate comprising two planar sections each in a form of a projection, each projection comprising: a respective guide section of the at least two guide sections, wherein the casing comprises a burner mating flange configured to secure a component to the casing at the burner mating flange, and the casing comprising: the at least two mating guide sections which are disposed radially outside of the burner mating flange, wherein each of the at least two mating guide sections is designed to mechanically interact with a respective guide section of the at least two guide sections to orient the device relative to the casing of the gas turbine; and the respective mating connection section which is disposed radially outside of the burner mating flange and designed to establish the releasable yet secure connection with the at least one connection section, wherein each mating guide section comprises a guide body that is immovably integral to the casing and that protrudes from the casing, and wherein each mating connection section comprises a connection body that is immovably integral to the casing and that protrudes from the casing, and wherein the guide body and the connection body are immovable relative to each other, wherein the connection plate is immovably secured directly to the connection body hut not to the burner mating flange, and the at least two guide sections and the at least one connection section are configured to be positioned radially outside of the burner mating flange when the connection plate is directly secured to the connection body, wherein each guide section of the at least two guide sections mechanically cooperates with a respective mating guide section of the at least two mating guide sections via a respective guide arrangement, wherein each respective guide arrangement comprises a bore and an unthreaded stud that slides into the bore via axial movement alone and in a fit that properly aligns the device on the casing before the connection plate is secured to directly the connection body, and wherein each respective guide section comprises either the stud or the bore, and wherein for each mating guide section: when the respective guide section comprises the bore the mating guide section comprises the stud, and when the respective guide section comprises the stud the mating guide section comprises the bore.

2. The gas turbine as claimed in claim 1, wherein the rail system comprises, on a side opposite of a side that provided for the runner, at least one attachment section configured to attach to a load-supporting element.

3. The gas turbine as claimed in claim 1, wherein the at least two guide sections and the at least one connection section are designed as bores.

4. The gas turbine as claimed in claim 3, wherein the bores are spaced apart from one another such that the bores cannot be oriented for mutual connection using any two threads of the burner mating flange.

5. The gas turbine as claimed in claim 1, wherein the rail system comprises at least two mutually parallel rails.

6. The gas turbine as claimed in claim 1, wherein at least one mating guide section of the at least two mating guide sections comprises the stud and the respective guide section comprises the bore.

7. The gas turbine as claimed in claim 1, wherein at least one mating guide section of the at least two mating guide sections comprises the bore and the respective guide section comprises the stud.

8. The gas turbine as claimed in claim 1, wherein the runner comprises a runner plate comprising a shaped section which can interact with a suitable mating shaped section of the component in a fitting manner to receive and to support.

9. The gas turbine as claimed in claim 1, wherein the stud comprises an unthreaded peg.

10. The gas turbine as claimed in claim 1, wherein each mating guide section of the at least two mating guide sections comprises the stud, and wherein respective guide sections each comprise the bore.

11. The gas turbine as claimed in claim 1, wherein the burner mating flange comprises an array of bolt holes, each comprising a thread configured to receive a screw, wherein the bore does not fit the thread.

12. The gas turbine as claimed in claim 1, wherein the bores are spaced so that the terminal positioning part cannot be connected to the burner mating flange.

13. The gas turbine as claimed in claim 1, wherein the component comprises a burner.

14. The device as claimed in claim 1, wherein the at least two guide sections are spaced so that the at least two guide sections cannot be connected to the burner mating flange.

15. An arrangement, comprising: a casing comprising: a mating flange configured to secure a component; at least two mating guide sections which are disposed radially outside of the mating flange; and a mating connection section disposed radially outside of the mating flange; wherein each mating guide section comprises a guide body that is immovably integral to the casing and that protrudes from the casing, and wherein each mating connection section comprises a connection body that is immovably integral to the casing and that protrudes from the casing, and wherein the guide body and the connection body are immovable relative to each other; a rail system on which a runner s displaceable along a predefined displacement axis; a terminal positioning part which is securely connected to the rail system, the terminal positioning part comprises: at least two guide sections, each of which is designed to mechanically cooperate with a respective mating guide section of the at least two mating guide sections; and at least one connection section designed to establish a secure yet releasable connection with a respective mating connection section; wherein the terminal positioning part is designed as a connection plate comprising two planar sections each in a form of a projection, each projection comprising a respective guide section of the at least two guide sections; wherein the connection plate is immovably secured directly to the connection body but not secured directly to the mating flange, and the at least two guide sections and the at least one connection section are configured to be positioned radially outside of the mating flange; wherein each respective guide section mechanically cooperates with each respective mating guide section via a respective guide arrangement, wherein each respective guide arrangement comprises a bore and a stud that slides into the bore via axial movement alone and in a fit that properly aligns the component on the casing before the connection plate is secured to directly the connection body, and wherein each respective guide section comprises either the stud the bore, and wherein for each mating guide section when the respective guide section comprises the bore the mating guide section comprises the stud, and when the respective guide section comprises the stud the mating guide section comprises the bore.

16. The arrangement of claim 15, wherein the mating flange is a burner mating flange, and wherein the component is a burner.

17. A mounting arrangement, comprising: a gas turbine engine combustion section outer casing comprising a burner mount comprising a burner flange surrounding a burner opening through the combustion section outer casing, the burner flange configured to secure a burner to the burner mount; a connection body protruding from and immovable relative to the combustion section outer casing and disposed adjacent and radially outside the burner flange with respect to the burner opening; a mounting device comprising: a rail system comprising rails on which a runner translates, the runner configured to secure the burner to the rails; and a connection plate connected to the rails; and a pattern of unthreaded alignment pins configured to align with a matching pattern of alignment bores only when the mounting device is positioned in a predetermined orientation relative to the burner mount, wherein once aligned alignment pins of the pattern of unthreaded alignment pins are advanced into alignment bores of the matching pattern of alignment bores via axial movement alone until the connection plate abuts the connection body, thereby enabling the connection plate to be immovably secured directly to the connection body, not secured directly to the burner flange, and positioned radially outside the burner flange when so secured.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the figures:

(2) FIG. 1 is a perspective view of an embodiment of a device, according to the invention, for installing and removing a component, which has already been attached to the casing of a gas turbine.

(3) FIG. 2 is a perspective side view of an embodiment of a burner mating flange which is provided in one piece with two mating guide sections and two mating connection sections, as a component of the casing of a gas turbine.

(4) FIG. 3 is a perspective view of an embodiment of a device, according to the invention, for installing and removing a component, which has already been attached to the casing of a gas turbine, as for example already illustrated in FIG. 1.

(5) FIG. 4 is a perspective view of an embodiment of a device, according to the invention, for installing and removing a component, as already illustrated in FIGS. 1 and 3, with the difference that this device supports a component.

DETAILED DESCRIPTION OF INVENTION

(6) FIG. 1 shows an embodiment of a device 1, according to the invention, for installing and removing a component 11 (not shown here) on a gas turbine 10. The device 1 is releasably attached to the casing 5 of the gas turbine 10.

(7) In order to support the weight of a component 11 (not shown), the device 1 has a rail system 20 which comprises two mutually parallel rails 21. A runner 22 (not shown here) can be displaced on the rails 21 in question, along a displacement axis VA, such that the runner 22 in question can be moved back and forth normal to the plane defined by the burner mating flange. The plane which is defined by the two rails 21 and which contains the displacement axis VA defines a displacement plane VE. Displacement can be brought about in a controlled manner by means of a displacement adjustment unit 60.

(8) The rail system 20 is connected to a positioning part 25, by means of which positioning part 25 it is in turn possible to establish a connection between the rail system 20 and the casing 5 of the gas turbine 10. The secure and releasable connection between the positioning part 25 and the casing 5 of the gas turbine 10 is established by means of two connection sections 31 and 32, wherein the connection sections 31, 32 in question are provided in the form of bores in the positioning part 25, itself in the form of a plate, through which bores two respective screws can be guided and screwed to the casing 5 of the gas turbine 10.

(9) In order to align the rail system 20 on the casing 5 of the gas turbine 10, the positioning part 25 also has in each case one lateral guide section 28 and 29 which, in the present case, are also designed as bores in the positioning part that is in the form of a plate. In this context, the bores are provided in the lateral planar sections 26 and 27, which are designed as projections in the sense of an outward-projecting continuation of the planar positioning part. Suitable guide pegs, which constitute the mating guide sections 38 and 39, extend through the bores of the guide sections 28 and 29. In order to align the device 1 on the casing 5 of the gas turbine 10, these pegs are first inserted into the guide sections 28 and 29 in the form of bores, such that the rail system 20 can already be suitably oriented with respect to the burner opening that is defined by the burner mating flange 55. Once this orienting step is complete, the device 1 is screwed to the casing 5 of the gas turbine 10 with the aid of the screws in the region of the connection sections 31 and 32. In this context, it is to be noted that attachment of the device 1 in the region of the burner mating flange 55 is not effected using the threads 45 of the burner mating flange 55, but rather in the region of other threads that are not provided for attachment of the burner to the burner mating flange 55. These threads are provided in the manner of a mating connection section 41 and 42 in the region of the burner mating flange 55.

(10) FIG. 2 shows the region of the burner mating flange 55 in a perspective side view of an embodiment of the gas turbine 10, as shown by way of example in FIG. 1. The figure shows clearly that the two mating guide sections 38 and 39 are designed as pegs which, for alignment, project through the guide sections 28 and 29, designed as bores, of the device 1. However, in order to establish a strong connection between the device 1 and the casing 5 of the gas turbine 10, the device 1 is screwed, with the aid of the previously mentioned screws, into the two mating connection sections 41 and 42 that are designed as threads. By virtue of this attachment, the device 1 can be attached to the gas turbine sufficiently securely for supporting a component and for precise alignment. It is at the same time possible to avoid the threads 45 of the burner mating flange 55 being damaged, for example by improper use of the device 1.

(11) Both the mating guide sections 38 and 39 and the two mating connection sections 41 and 42 are made in one piece together with the component of the burner mating flange 55. This makes it possible to achieve precise orientation of the mating guide sections 38 and 39 and of the mating connection sections 41 and 42 relative to one another or relative to the threads 45 of the burner mating flange.

(12) In order for the weight of the component 11 that is to be supported (not shown here) to be sufficiently securely supported on the burner mating flange 55, and to transfer the support forces thereto, the two mating guide sections 38 and 39, and respectively the mating connection sections 41 and 42, are provided in mirror image to one another along a respective connecting line VL.

(13) FIG. 3 shows the device 1, already illustrated in FIG. 1, in a perspective side view from below, there being provided a total of 4 attachment sections 35 on the opposite side of the rail system 20 from the runner 22, to which a load-supporting element can be attached. In this context, the attachment sections 35 are in the form of metal eyes through which for example a load-bearing steel cable can run in order to support the device 1 for extra security. The attachment sections 35 are used primarily when, once a component has been installed or removed at one burner mating flange 55, the device 1 has to be moved to another burner mating flange 55 of the gas turbine 10.

(14) FIG. 4 shows a side view of an embodiment of the device 1 according to the invention, or an embodiment of the gas turbine 10 according to the invention, in which however a component 11 in the form of a burner is supported by the rail system 20 and has already been correctly aligned, for installation, with the casing 5 of the gas turbine. For alignment, the burner flange 12 is oriented relative to the matching burner mating flange 55 such that the bores on the burner flange 12 line up with the no longer visible threads 45 of the burner mating flange 55, and can then be screwed using suitable screws.

(15) Further embodiments are to be found in the subclaims.