RU29484U1 - End-face steam and gas turbine unit for oil pipe cleaning - Google Patents

Description

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STEAM AND GAS-TURBINE UNIT WITH SIDE-LOAD FOR CLEANING OIL PIPES

The useful model refers to the oil industry, namely, the cleaning of pipes used in the oil and refining industries from asphalt-resin-paraffin deposits, and can be used for thermal cleaning of pipe surfaces using gas turbine aircraft engines, including those that have worked out their flying life.

Known gas turbine installation for thermal cleaning of tubing from paraffin deposits, containing a gas generator based on an aircraft engine and a cleaning chamber, inside which is placed a packet of pipes to be cleaned (see Russia patent No. 2050054, publ. 10.12.95, B08B 5/00).

A disadvantage of the known installation is the openness of the gas-dynamic path at the inlet and outlet of the cleaning chamber and the leakage of the lid, which is caused by temperature

material deformations. This leads to harmful emissions into the working area of the installation, which violates the ecology of the environment.

The closest in technical essence and the achieved result is the installation that implements the method of cleaning pipes with gas-vapor mixture, containing a gas generator based on an aircraft engine, a cleaning chamber and an output unit (see Russia patent No. 2040982, publ. 31.03.93). The known technical solution provides improved cleaning quality, stability, reduced toxicity of exhaust gases and fuel consumption for generating a gas mixture.

However, the known steam-gas turbine installation has a number of significant disadvantages. It is not possible to ensure the tightness of the cleaning chamber along its entire length due to thermal deformations, which are significant. Long breaks are required in the operation of the installation for cleaning the collection tank from difficult to remove resinous cleaning products.

A common drawback of the known installations is the need for frequent shutdowns of the aircraft engine when the cleaning chamber is restarted, which leads to a decrease in the productivity of the installation and is not recommended when operating the aircraft engine. The time that is required by the regulations for restarting the aircraft engine is much longer than the pipe cleaning time and the cleaning chamber reset time. The disadvantage is the limitation on the thickness of deposits on the inner surface (up to 10-15 mm) to ensure the necessary cleaning

gas-vapor mixture flows. Installations of this type, currently in operation, have significant emissions of cleaning products into the work area, as it is not possible to ensure complete tightness of the periodically restarted cleaning chamber.

The technical task is high-quality and productive cleaning of oil pipes, regardless of the thickness of deposits on the inner surface, while maintaining the operational characteristics of the pipe material and eliminating emissions into the working area of the installation.

The technical result is achieved by the fact that a steam-gas turbine installation for cleaning oil pipes, containing a gas generator based on an aircraft engine, a pipe cleaning chamber and an output unit, is equipped with: .

-transport system and the form of a cart for pipes for reloading the end-face cleaning chamber;

- nozzle nozzle with a collector and jet nozzles for supplying water for vaporization;

- a cart for moving containers with cleaning products,

and the cleaning chamber is made in the form of a sealed insulated pencil case with the ability to load pipes from the end or from the side of the unit to collect cleaning products. Behind the pipe trolley there is a trolley for cleaning products, which is discharged into a stationary tank outside the installation during the reset of the cleaning chamber. The water supply for vaporization in the nozzle nozzles allows you to provide

the most complete combustion of aircraft tonnel and avoid aircraft engine breaks under the influence of temperature stresses.

The proposed gas turbine installation is illustrated by the drawing in figure 1, which shows the General scheme of the installation.

The installation contains a gas generator based on an aircraft engine 1, nozzle nozzles 2 with a collector and nozzles for vaporization 3, a cleaning chamber 4 in the form of a sealed heat-insulated pencil case, an output unit 5, a slipway for loading and unloading pipes 6, a truck for transporting pipes 7 and cleaning products 8, stationary a container for cleaning products 9 and rail tracks of the transport system 10 from a nozzle nozzle 2 to a stationary container for cleaning products 9. When the unit is in use, storage racks for dirty and clean pipes 11 ..,

The installation operates as follows:

Pipes contaminated with asphalt-resin-paraffin deposits from the storage rack 11 for dirty pipes are loaded into the cart for transporting the pipes 7. Using the winch, the cart 7 is moved to the cleaning chamber 4 through the output unit 5. The end doors of the output unit 5 are tightly closed behind the cart 7. In the process of cleaning the door they are protected from cleaning products by screens that lower when the doors are closed. Loading and unloading takes a total of 2-3 minutes. Since restarting the aircraft engine 1 requires significantly longer time (10-15 minutes), the cleaning chamber 4 is rebooted when

a working aircraft engine 1. After loading the cleaning chamber 4, the aircraft engine 1 is put into operation. The water supply for vaporization in the nozzle nozzles 2 through the manifold and nozzles 3 is resumed. The temperature of the exhaust gas stream decreases from 500-550 ° C to 200-250 ° C. Within 3-4 minutes under the influence of the gas-vapor flow, the sediment peels off from the walls of the pipes being cleaned. Under the influence of the aerodynamic pressure, sediments partially melted are taken out to the cleaning products trolley 8, which at that time is located in the output block 5. At the end of the cleaning, the doors of the output block 5 and 7.8 trolleys are opened from the cleaning chamber 4 using the winch. A cart with cleaning products 8 is automatically removed; a stationary container for cleaning products is also removed 9. The cleaned pipes are moved by a crane to the rack of clean pipes 11.

Thus, the proposed technical solution provides high-quality and productive cleaning of oil pipes in compliance with high environmental requirements with minimal emissions of cleaning products into the working area.

Claims (1)

An end-face gas and gas turbine installation for cleaning oil pipes, comprising a gas generator based on an aircraft engine, a cleaning chamber and an output unit, characterized in that it is equipped with a transport system in the form of a pipe carriage, a nozzle nozzle with a collector and jet nozzles, a moving carriage and a tank for collecting cleaning products, while the cleaning chamber is made in the form of a sealed thermally insulated pencil case with the ability to load pipes from the end or from the side of the output unit, moreover, a trolley for The premises of the cleaning products are installed sequentially behind the pipe carriage.