SU1052694A1 - Gas turbine power plant - Google Patents

Abstract

GAS TURBINE POWER INSTALLATION, containing sequentially installed on the common frame gas generator, power turbine and exhaust device, housed in separate housings interconnected, characterized in that, in order to increase reliability, simplify installation and dismantling works and improve operating conditions, all the interconnected by means of telescopic connections with T-shaped sealing rings, and the housing of the gas generator and power turbine mounted on the frame with the possibility of movement. (L 01 tsD about:; about 4

Description

This invention relates to a gas turbine construction, in particular to gas turbine power plants.

A gas turbine power plant is known, comprising a gas generator, a power turbine and a natural gas compressor located in a common container 1.

However, this installation is characterized by insufficient reliability due to the hard coupling of the gas generator to the power turbine.

Also known is a gas turbine power plant, containing in series a gas generator installed on a common frame a power turbine and an exhaust device housed in separate housings interconnected 2.

However, the known installation is also characterized by insufficient reliability, complexity of installation and dismantling works and operating conditions.

The purpose of the invention is to increase reliability, simplify installation and dismantling, and improve the operating conditions of a gas turbine power plant.

This goal is achieved by the fact that in a gas turbine power plant containing a gas generator sequentially installed on a common frame, a power turbine and an exhaust device placed in separate housings interconnected all the bodies are interconnected by means of telescopic connections with T-shaped sealing rings, and the housing of the gas generator and the power turbine mounted on the frame with the possibility of movement.

FIG. 1 shows a gas turbine power plant, a longitudinal section; in fig. 2 — node I in FIG. 1 on a larger scale; in fig. 3 - node II in FIG. 1 on an enlarged scale.

The gas turbine power plant contains successively installed on the common frame 1 a gas generator, a power turbine and an exhaust device placed in separate housings 2, 3, 4, respectively, and interconnected by means of telescopic connections with T-shaped sealing rings 5 (Fig. 2), which are installed at the junction of the housings 2 and 3 and the housings 3 and 4 on their tail parts 6. The ridge 7 of the sealing rings 5 enters the grooves 8 formed by the flange parts 9 of the housing 3 of the power turbine or the housing 4 of the exhaust device tapas and ring covers 10.

Buildings 2 and 3 of the gas generator and the power turbine are fixed on their separate frames 11 and 12, respectively. The supporting parts of the frames 11 and 12 are movable in the form of rollers 13 (Fig. 3), which are mounted on a movable bracket 14 located inside the casing 15. On the casing 15 there is a forcing bolt 16 and locking screws 17.

During operation of the gas turbine unit, especially during the cold start-up period, the gas generator case 2 and the power turbine case 3 have different temperature expansions both in the axial and radial directions due to uneven heating. Mounted on the tail parts of 6 bodies 2 and 3 T-rings 5 provide sealing of interbody joints, which are made telescopic.

In the radial direction, the seal 7 is provided with the ridge 7 of the ring 5. The ridge 7 enters the groove 8, closing the gap formed in the joints during radial movements of the gas generator body 2 or the power turbine body 3. In this case, the side surface of the ridge 7 of the ring 5 is pressed against the inner surface of the ring cover 10 by the working pressure formed in the flow part of the power drive. In the axial direction, the seal of the body joints is provided with the same rings 5, the landing of which movement on the tail part 6 of the body 2 and 3 is chosen with a minimum clearance. Such a fit does not prevent the linear displacement of the tail parts 6 of the gas generator 2 and the power turbine body 3 relative to the flange parts 9 of the power turbine body 3

and housing 4 exhaust device.

If necessary, repair or replacement of the housing 2 of the gas generator and the housing 3 of the power turbine, placed on the supports frames 11 and 12, the movable rollers 13 push

using squeezing bolts 16 from covers 15 up to the stop into the surface of the common frame 1. After that, squeezing bolts 16 by acting on the movable brackets 14 to the frame 11 of the gas generator 2 or the frame 12 of the power turbine 3 3 from the frame 1, the rollers 13 are fixed the screws 17 and the bodies 2 or 3 are easily moved along the frame 1 on the rollers 13 without dismantling the connecting connections of the bodies.

Thus, the proposed gas turbine power plant allows to increase reliability, simplify installation and dismantling works and improve operating conditions.

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Claims (1)

GAS-TURBINE POWER PLANT, containing a gas generator, a power turbine and an exhaust device sequentially installed on a common frame, located in separate buildings interconnected, characterized in that, in order to increase reliability, simplify installation and dismantling works and improve operating conditions, all cases are connected with each other using telescopic joints with T-shaped sealing rings, and the gas generator and power turbine housing are mounted on the frame with the possibility of movement.