RU2246017C2 - Ventilation device of compartment of drive gas-turbine engine of gas main line gas-transfer set - Google Patents

Abstract

FIELD: gas transfer equipment.

SUBSTANCE: proposed ventilation device contains compartment with centrifugal air exhaust fan, drive gas-turbine engine with internal and external envelopes forming channel for hot air, process hatches on diameter of external envelope, and high-pressure compressor. Drive gas-turbine engine is furnished additionally with air conduit to discharge hot air into atmosphere through one of its open process hatches, using as ejector active air delivered into air conduit along separate pipe from high-pressure compressor.

EFFECT: reduced temperature in compartment of drive gas-turbine engine.

1 dwg

Description

The invention relates to gas pumping units of the main gas pipeline and can be used to reduce the temperature in the compartment of the driving gas turbine engine.

The ventilation unit of the drive gas-turbine engine of the gas pumping gas pipeline containing the compartment with the centrifugal exhaust fan of air, the drive gas-turbine engine (PGTD) with the inner and outer shells forming the channel with hot air, technological hatches by the diameter of the outer shell and the high pressure compressor ( 1. Gas pumping unit GPA-Ts-16. Technical description 1.4300. 4.0000.000. TO, Sumy branch of a special design bureau for the creation of air and gas turbo-refrigerating machines. 1982 2. NK-16 ST gas turbine engine. Technical operation manual. Books 1-5. Kazan Publishing House 2000. Kazan Motor-Building Production Association).

However, during operation of the ПГТД, especially in the summer period, with the centrifugal exhaust fan turned on, the temperature inside the compartment reaches more than 100 degrees Celsius, which leads to a deterioration in the operating conditions of the engine and, in particular, to the melting of the engine cable harness, the failure of the lighting and control elements in the compartment, failure and false alarms of the fire alarm sensors. The high temperature is caused by the blowing of hot air into the compartment from the channel between the inner and outer shells through the connection elements in the PGTD and the high heat transfer of its outer shell.

An increase in the number of ventilation units leads to an increase in energy consumption, metal consumption and a decrease in usable volume in the compartment.

The disadvantage of the prototype is the high temperature in the compartment PGTD.

The purpose of the invention is to reduce the temperature in the compartment PGTD.

This goal is achieved by the fact that the ventilation device of the PGTD compartment of the gas pumping unit of the main gas pipeline, containing the compartment with a centrifugal exhaust fan, PGTD with the inner and outer shells that form the channel with hot air, technological hatches by the diameter of the outer shell and the high-pressure compressor are additionally equipped with an air duct for the removal of hot air directly into the atmosphere through one of its open technological hatches, using the act as an ejector The normal air is forced into the duct through a separate pipe from a high-pressure compressor.

The drawing schematically shows a compartment of a driving gas turbine engine of a gas pumping unit of a main gas pipeline with a ventilation device.

The drawing shows compartment-1 with a centrifugal exhaust fan of air-2, ПГТД-3, air duct-4 for venting hot air, outer-5 and inner-6 shells forming a channel of hot air-7 in ПГТД-3, one of the open technological hatches-8 in diameter of the outer shell-5, high-pressure compressor-9, a separate pipe-10 for supplying compressed air from the high-pressure compressor-9 to the duct-4.

During operation of the ПГТД-3 together with the centrifugal exhaust fan of air-2 in compartment-1, hot air from channel-7 of ПГТД-3 enters air duct-4 through one of its open technological hatches-8, and compressed air from the high-pressure compressor 9, used as an ejector, is pumped into a duct-4 through a separate pipe-10. Due to injection, the suction of hot air from channel-7 increases sharply, which leads to a decrease in air temperature between the inner-6 and outer-5 shells and a decrease in heat transfer to compartment-1 of the outer shell-5. Under these conditions, the blowing into the compartment-1 of hot air from PGTD-3 through the elements of its connection also decreases.

Tests of the proposed device in a closed compartment-1 with operating PGTD-3 and a centrifugal exhaust fan of air-2 at an outdoor temperature of +20 degrees Celsius showed that the temperature inside the PGTD compartment does not exceed + 50 ° C. The proposed device does not require significant material costs and does not reduce the useful volume of the compartment.

Claims (1)

A ventilation device for a compartment of a driving gas turbine engine of a gas pumping unit of a main gas pipeline, comprising a compartment with a centrifugal exhaust fan of air, a driving gas turbine engine with inner and outer shells forming a channel with hot air, technological hatches by the diameter of the outer shell and a high pressure compressor, characterized in that, in order to reduce the temperature in the compartment of the driving gas turbine engine, the driving gas turbine engine is additionally provided with air channeling systems for discharging hot air directly into the atmosphere via one of its access doors open, using as an active ejector air injected into a duct through a separate pipe from the high pressure compressor.