RU2494366C2 - Complex for air sampling - Google Patents

Abstract

FIELD: test engineering.

SUBSTANCE: complex comprises a housing representing the interconnected vertical panels on which the samplers with absorption packets with hubs are located. The complex also comprises solenoid valves, filters-dehumidifiers, tanks with sensors measuring temperature and pressure, sampling manifold, the gas turbine aircraft engine (GTAE) located in front of the testee, a diffuser with jet tubes, a vacuum pump, and a control panel. At that the complex is equipped with an additional tank with temperature and pressure sensors and a solenoid valve, and the samplers and solenoid valves are uniformly distributed in equal parts on the manifolds, each of which is connected to the corresponding tank.

EFFECT: enhancing the technological capabilities of the complex, reducing the time of air sampling from the compressor GTAE for its subsequent analysis for the content of harmful impurities and their concentrations, saving expensive jet fuel, increased ease of use of the complex, and reducing wear of GTAE.

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Description

The invention relates to the field of bench testing of gas turbine aircraft engines, namely, for sampling air from a compressor of a gas turbine aircraft engine (GTE).

A known complex for sampling air, containing the frame, lined with vertical and horizontal panels, on which there are samplers with adsorption bags having concentrators, solenoid valves, filter-dehumidifiers, tanks with sensors for measuring temperature and pressure, a sampling collector, a diffuser installed before test engine, vacuum pump and control panel [1]. This complex is the closest to the invention in technical essence and the achieved result and adopted by the applicant as a prototype.

A disadvantage of the known device is: limited functionality and long-term sampling of air from the compressor of a gas turbine aircraft engine for its subsequent analysis for the content of harmful impurities and their concentrations.

The technical result of the proposed invention is the expansion of functionality, reducing the time of sampling air from a gas turbine compressor for its subsequent analysis for the content of harmful impurities and their concentrations, saving expensive aviation fuel, increasing the ease of use of the complex, as well as reducing the wear and tear of gas turbine engines.

The specified technical result is achieved by the fact that the complex for air sampling, comprising a housing consisting of interconnected vertical panels on which there are samplers with adsorption bags having concentrators, electromagnetic valves, filter-moisture separators, tanks with temperature and pressure measuring sensors , a sampling collector (sampling comb) installed in front of the GTE subject, a diffuser with nozzles, a vacuum pump and a control panel, is equipped with an additional tank from temperature and pressure sensors and a solenoid valve, while samplers and solenoid valves are evenly distributed in equal parts on the collectors, each of which is connected to a corresponding tank.

The essence of this invention is illustrated by drawings (figure 1, 2, 3), which depicts General views of the complex, figure 4 shows a sampler and a basic pneumatic circuit (figure 5).

The air sampling complex comprises a housing 1, which is a vertical panel 2 and 3 interconnected, on which samplers 4 are located with adsorption bags 5 having concentrators 6, solenoid valves 7, moisture-separating filters 8, tanks 9, 10, 11 and 12 with sensors for measuring temperature 13 and pressure 14, a comb (collector) of sampling installed in front of the GTE subject 16, a diffuser with nozzles 17, a vacuum pump 18 and a control panel 19, is equipped with an additional tank 20 with temperature sensors 21 and pressure 22 and electric with a solenoid valve 23. Samplers 4 with concentrators 6 and solenoid valves 7 are evenly distributed in equal parts on the collectors, each of which is connected to the corresponding tank 9, 10, 11, 12 and 20. The complex also has a fitting 24 for connecting it to the air intake pipe from the compressor of the engine and connectors 25 for connecting it to the electrical circuit of the test bench.

The air sampling system works as follows:

install the housing 1 directly near the place of sampling air from the compressor GTD 16 on the test bench. Connect to the fitting 24, connected by a pipe 26 with a diffuser 17, the pipe 27 of the air intake from the compressor. Install adsorption bags 5 with concentrators 6 in the samplers 4. Connect the housing through the plug connectors 25 to the electrical circuit of the test bench. Install the control panel 19 at the operator’s workplace and connect it to the electrical circuit of the test bench. All solenoid valves are normally closed. Using the control panel 19, turn on the vacuum pump 18 and create a vacuum in the tanks 9, 10, 11, 12, 20 by opening the electromagnetic valves 7 and 23 between each tank and the vacuum pump, then close them and turn off the pump. After starting the gas turbine engine, take air samples at various gas turbine engine operating modes, using the control panel 19, opening the corresponding electromagnetic valve 7 or at the same time a group of valves between the samplers and the tanks and sucking in air:

- coming from the compressor GTE 16 through the fitting 24 and the pipe 26 into the diffuser 17, in which the flow is divided into ten parts, each of which goes to its sampler;

- entering the comb (collector) of sampling 15, located by the inlet towards the air flow and dividing the flow into five parts, each of which goes to its sampler;

- in tanks according to the technological documentation, recording data from pressure sensors 14, 22 and temperature 13, 21 and controlling the selection process from the control panel 19. After completion of the selection process and stopping the gas turbine engine, remove the adsorption bags from the samplers, place them in a special container and transfer them for analysis in the laboratory.

For sampling air at a known complex, it is necessary to repeatedly evacuate the tank 12, which is due to the large number of air sampling and entails the need for continuous operation of the gas turbine engine in various modes.

Using the present invention will expand the functionality of the complex, namely, to take air with a single evacuation of the tank 12, by introducing an additional tank 20 with pressure sensors 22 and temperature 21 and the electromagnetic valve 23, as well as the uniform distribution of the samplers 4 and electromagnetic valves 7 in equal parts on the manifolds, each of which is connected to the corresponding tank.

These measures will reduce the time required for sampling air, save expensive aviation fuel and improve the usability of the complex, as well as reduce the wear and tear of gas turbine engines.

Information sources

1. Magazine “Engines” No. 3 (27) “New means of monitoring the composition of the atmosphere of aircraft” p.14, 2003 - prototype.

Claims (1)

A complex for sampling air, comprising a housing consisting of interconnected vertical panels on which there are samplers with adsorption bags having concentrators, electromagnetic valves, filter-dehumidifiers, tanks with temperature and pressure measuring sensors, a sampling collector installed in front of gas turbine engine under test, diffuser with nozzles, vacuum pump and control panel, characterized in that it is equipped with an additional tank with temperature and pressure sensors and a solenoid valve, and the solenoid valves and samplers are uniformly distributed in equal parts to the manifolds, each of which is connected to the corresponding tank.

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