RU2696432C1 - Method for cleaning burners of individual combustion chambers of preliminary fuel mixing and installation for its use - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to devices used in gas industry, in particular, during blowdown and washing out of failed burner devices individual fuel pre-mixing combustion chambers (BD IFPMCC) to restore their operability in conditions of operating production facility. BD with flame tube is installed in blowdown device, cover and housing of which are connected. Into blowdown device containing unions and flanges with ball valves (BV) and union with ball valve (BV) with a manometer, compressed air is supplied. Pouring device is filled through input device BV and purging BD. Wash installation is connected. Detergent solution is fed into the device until it is filled. Input and output are closed BV for soaking solidified combustion products. Input and output BV and washing solution is circulated through PG, wherein detergent solution is cleaned through filter system. Then blowing is performed BD air for displacement of excess moisture.

EFFECT: organization of cleaning technology BD IFPMCC by own forces in conditions of compressor station for recovery of serviceability and their further application.

2 cl, 2 dwg

Description

The invention relates to devices used in the gas industry during maintenance of a gas pumping unit (hereinafter - GPU), in particular, when blowing and washing clogged burner devices (hereinafter - GU) of individual combustion chambers of preliminary fuel mixing (hereinafter - ICS PST) for restore their performance.

A number of devices are known for cleaning clogged PG in order to restore their performance.

A known method for cleaning GU by ultrasonic treatment (RF patent No. 2625465, B08B 3/12, 03/02/2016) selected as a prototype. The method consists in immersing the end surface of the rod concentrator in a liquid and exciting longitudinal vibrations in it. As a rod concentrator, a concentrator with a variable internal profile is used. The cleaned PG is fixed vertically at the end of the rod concentrator. The passive pad, the piezoceramic transducer, the rod concentrator, and the cleaned GPU GPA attached to it form a single oscillatory system, the total length of which is nλ, where λ is the wavelength of ultrasonic vibrations, n = 3, 4, 5. The cleaning fluid is pumped through the channels and openings of the cleaned GU GPA in a closed loop.

A disadvantage of the known device is the structural complexity of manufacturing, the presence of a piezoceramic transducer, a rod concentrator, an electric pump, which in turn complicates its use in an existing production facility.

A known method of cleaning burner parts from RU 2465971 C2. 11/10/2012. The problem is solved by a method of cleaning burner parts, in which the burner is connected from the nozzle side to a mobile cleaning device with a closed pressure tank. The end of the burner on the nozzle side is located inside the pressure tank, and the opposite end on the output side for the fuel supply, the first end of the burner is outside the pressure tank. The part to be cleaned is blown against the direction of flow of the fuel. The pressure tank has a removable lid whereby the various burners can be cleaned with the same mobile cleaning device. The burners of various gas turbines can be serviced, so that only one cleaning main body is required.

The disadvantage of the method described in RU 2465971 C2 is the inability to clean the burner device, consisting of several burners assembled. GU IKS PST consists of seven burners, their dismantling and subsequent installation involves a lot of labor.

The design of the burners GU IKS PST eliminates the possibility of cleaning by the method described in RU 2465971 C2.

The technical result - the organization of the cleaning technology GU IKS PST on its own in a compressor station, to restore efficiency and their subsequent application.

The objective of the invention is to provide the possibility of restoring the health of the GU.

The problem is solved by developing a method for cleaning the PG and creating a special installation that allows you to purge and flush the PG assembly with the reduction of hydraulic resistances to acceptable values.

The claimed installation for cleaning PG is explained using:

FIG. 1 is a general view of a purge device.

FIG. 2 is a diagram of flushing the PG using the installation for cleaning the PG.

The technology for cleaning GU from deposits of combustion products is as follows:

PG (1) is inserted into the flame tube (17) to eliminate uncharacteristic stresses of the structural elements of PG (1) during the purging and washing. Then GU (1) with a flame tube (17) is installed in the housing (3) of the purge device (4). After that, the cover (2) is connected to the body (3) using a flange connection (5), tightened with studs and pull the flange of the PG (16) to the cover (2) with bolts. An inlet ball valve (hereinafter referred to as KSh) (6) is installed on the fitting located at the end of the housing (3). An output switchgear (8) is installed on the GU connector of the starting fuel gas supply circuit, an output switchgear (9) is installed on the GU flange of the main fuel gas supply circuit, then the output switchgear (8) and (9) are closed. On the nozzle located in the upper part of the housing (3), the KSh (10) is installed and the pressure gauge is connected to it, the KSh (10) is open. Compressed air taken from the compressed air system of the compressor shop or other source of compressed air is supplied through a flexible hose (7) connected to the inlet KS (6) to the purge device (4). When the air pressure is equal to the working pressure in the ИКС ПСТ shut off the input КШ (6) and open the output КШ (8). After the pressure in the purge device (4) is reduced to atmospheric, the purge of the start-up circuit of the control unit is considered complete. Similarly, the main circuit of the PG is purged, after filling the purge device (4) with air to an air pressure equal to the working pressure in the ИКС ПТС shut off the input switch (6) and open the output switch (9).

In the presence of hardened soot deposits on the walls of the GU (1), after blowing, the GU is washed with a washing solution (washing solution concentrate for gas turbines) in a blowing device (4). To perform a flushing, a flushing unit (12) is connected through the flexible hose system (11) to the inlet booster cylinder (6), which ensures filling of the purge device (4) with a washing solution and its circulation. The washing process of the PG (1) begins with filling the purge device (4) with a washing solution, then the inlet KSH (6) and the output KSH (8) and (9) are closed to soak hardened deposits of combustion products. Next, the inlet KSH (6) and the output KSH (8) and (9) are opened and the washing solution is circulated through the PG (1). When washing GU (1), the washing solution is circulated through the filter system (13), for its cleaning and further use.

The installation for cleaning GU IKS PST consists of a purge device (4) and a flushing unit (12). The purge device (4) consists of a housing (3) mounted on a support frame (14) and a cover (2). The housing (3) is sealed, made of a pipe section, on one side has a blank wall on which a fitting for installing an input KSh (6) is located, on the other flange (5) for mounting the cover (2), in the upper part of the housing (3) there is a fitting for installing the KSh (10) and connecting a manometer to it. The purge device is hermetic. The housing (3) is fixed on the support frame (14) using fixing clamps (15) made of sheet steel. The supporting frame (14) is made of longitudinal and transverse channels welded together. Cover (2) - standard cover of the combustion chamber IKS PST. PGs (1) have a fitting for the starting fuel gas supply circuit, on which the output KS (8) is installed, a flange of the main fuel gas supply circuit, on which the output KS (9) and the flange (16) are mounted for fixing on the cover (2). For washing the PG (1), a flushing unit (12) is used, to which a purge device (4) is connected using flexible hoses (11). The design of the washing unit (12) allows for the circulation of the washing solution through the filter system (13), for cleaning the washing solution and its further use.

The salient features of the method:

- the ability to adjust the number of cleaning cycles depending on the degree of contamination of the PG;

- the possibility of reuse of the washing solution, thanks to the filter system.

Salient features of the claimed installation for cleaning PG are:

- the ability to restore the rejected (contaminated) PG and restore their hydraulic resistance to the required values;

- the installation allows both purging with compressed air and flushing of the PG with a flushing unit;

The claimed significant distinguishing features are not known to us from the patent and scientific and technical information and are therefore “New”.

A prototype was manufactured, which was successfully tested in the process of restoring the operational capacity of the State Institution in the Privodinsky Medical Center of Gazprom Transgaz Ukhta. With the help of which, a set of GU GPA Art. 36, which is confirmed by the protocols of measurements of hydraulic resistance before and after cleaning. In this regard, the claimed method and installation for its implementation meet the criterion of "Industrial applicability".

The claimed method and installation for its use allow the cleaning of the IKS PST from deposits of combustion products, and are intended to provide the possibility of further operation of the rejected PG.

Claims (2)

1. The method of cleaning the burner devices of individual combustion chambers of preliminary mixing of fuel (GU IKS PST), according to which the GU with a flame tube is installed in the purge device, the cover and body of which are connected, the washing system is connected, the washing solution is supplied to the device until it is filled, then the purge is carried out PG air for displacing excess moisture, characterized in that before connecting the washing unit to a purge device containing fittings and flanges with ball valves (KSh) and a fitting with a ball tap (KS) with a pressure gauge, supply compressed air, fill the purge device through the inlet KS and purge the GU, at the washing stage close the inlet and outlet KS to soak off hardened deposits of combustion products, open the inlet and outlet KS, circulate the washing solution through the GU, while the washing solution is cleaned through a filter system. 2. Installation for cleaning the GU IKS PST, comprising a purge device with a sealed housing and a cover located on the support frame, and a flush installation, characterized in that the purge device includes fittings and flanges for installing a KS and a fitting for installing a KS with a pressure gauge, the purge case is fixed to the support frame by fixing clamps, the flushing unit is connected to the purge device using flexible hoses and contains a filter system, the flushing unit is made with the possibility of circulating ulyatsii detergent solution.

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