RU2266415C1 - Air-intake system of gas-transfer set with gas-turbine engine - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: proposed gas-intake system of gas-turbine engine contains air cleaning device and suction chamber made in form of branch pipe smoothly bent through 90°. Said branch pipe is telescopically coupled by one end with output section of air cleaning device, and by other end, with input section of gas-air duct of gas-turbine engine. Guard in form of gauze with anti-icing coating is installed at output section of air cleaning device or input section of branch pipe.

EFFECT: improved reliability of air-intake system.

1 dwg

Description

The invention relates to mechanical engineering and can be used in gas pumping units (GPU) with a gas turbine engine (GTE) as a drive for a centrifugal supercharger. One of the indicators affecting the efficiency of the gas pumping unit is the hydraulic resistance of its air intake system. Decrease in hydraulic resistance on 10 mm of waters. Art. increases GPA efficiency ~ by 0.1%. Given that the hydraulic resistance at the engine inlet sometimes reaches up to 500 mm of water. Art., the search for ways to reduce hydraulic resistance is relevant.

The GPU air intake system directly includes an air purifying device (HEU), a suction chamber and an intermediate unit.

Well-known GPA development Sumy Engineering Production Association. M.V. Frunze, Sumy, Ukraine (certificates for industrial designs No. 1762 from 02.20.84, MKPO 23-01, No. 18071 from 06.15.84, MPKO 15-02).

The design of the air intake system described in the book by A.I. Apanasenko et al. Installation, testing and operation of gas pumping units in block-container design. L .: "Nedra", 1991, p. 17, 19, 31-34.

The presence of a cube-shaped suction chamber, where air enters with a sudden expansion, leads to turbulence in the flow, which, at the entrance to the gas-turbine engine, has different values of velocity and pressure in cross section. To form a uniform flow, an intermediate unit in the form of a cylindrical pipe is installed before entering the gas turbine compressor. The presence of a turbulized flow in the suction chamber increases the hydraulic resistance of the tract, while reducing the efficiency of the gas turbine engine and gas compressor unit as a whole. The suction chamber for mounting a gas turbine engine has openings in the walls perpendicular to the GPU axis, which, after installation, are closed by doors and shields with joint sealing. The disadvantages of the considered design include:

- increased hydraulic resistance of the air intake system;

- the presence of detachable joints and the need for their sealing;

- increased dimensions and metal consumption due to the presence of an intermediate unit and leminiscates.

An object of the invention is to eliminate the above disadvantages.

The technical result is achieved by the fact that in the GPU air intake system the suction chamber is made in the form of a branch pipe smoothly bent by 90 °, telescopically connected at one end with the HEU outlet section, and the other end with the inlet section of the gas-turbine engine path, and the nozzle is equipped with devices for adjusting its geometric position and rollback from the gas turbine engine, and at the HEU exit section or at the inlet section of the nozzle there is a protective fence, for example, a mesh with anti-icing coating.

The invention is shown in the drawing.

The air intake system of a gas compressor unit with a gas turbine engine includes a HEU 1, a smoothly curved pipe 2, an inlet section of the gas-air duct 3 a gas turbine engine, sealing devices 4, 5, 6, struts 7 for attaching a pipe 2 to a frame 8, control devices 9, a protective net 10 at the input section of the pipe 2 The gas turbine engine is located in the container 11. The HEU outlet section has an adapter 12, which is telescopically connected to the pipe 2.

The air intake system is assembled in the sequence:

- HEU 1 is mounted on the support of the GPU;

- the sealing device 6 is installed on the sealing device 5;

- the sealing device 5 is attached to the engine 3, and the sealing device 6 is urged to the container 11;

- on the horizontal platform of the pipe 2 is installed a sealing device 4 and is drawn to it;

- an adapter 12 is installed in the sealing device 4 with the protective mesh 10 installed on it;

- the pipe 2 with the help of control devices 9 is centered relative to the gas-air path 3 of the engine and is introduced into the sealing device 5;

- the adapter 12 fits into the output end of the HEU 1.

Features of the air intake system.

The cleaned air stream from the HEU passes through the protective mesh and enters the suction chamber, in which it rotates smoothly through 90 ° and enters the engine’s gas-air duct with almost no loss. A protective net eliminates the possibility of foreign objects getting into the engine’s gas-air path, and the anti-icing coating of the net eliminates snow accumulation and ice formation on it.

Using the invention will allow:

- increase the efficiency of the gas compressor unit by reducing the hydraulic resistance of the air intake system;

- reduce the size and metal consumption of the air intake system and the gas compressor unit as a whole;

- improve the reliability of the gas turbine engine.

Claims (1)

An air intake system of a gas turbine engine comprising an air purifying device, an intake chamber made in the form of a branch pipe smoothly bent by 90 °, characterized in that in it a curved pipe is telescopically connected at one end to the output section of the air cleaning device and the other end to the input section of the gas-turbine gas duct engine, while at the outlet of the air cleaning device or at the inlet of the nozzle there is a protective fence, for example, a mesh with anti ledenitelnym coating.