RU135547U1 - DEVICE FOR RINSING AND HYDROTESTING OF AIR RESERVOIRS - Google Patents

Abstract

A device for washing and hydrotesting of air tanks, containing a flow tank for washing water, a steam generator, a pump with an electric motor, pipes for transporting a steam-water jet and washing water, characterized in that a nozzle is installed on the pipe coming from the steam generator and a pipe connected to it with a rinse water tank, a rinse water tank is connected by a pipeline to the pump and a nozzle located on the pipeline coming from the steam generator, a water pipe is laid in the air from the pump an ear reservoir, each piping is equipped with an electromagnetic valve to provide a separate supply of a steam-water jet and flushing water into the air reservoir.

Description

The device is intended for flushing from contaminants and for hydraulic testing of air tanks of rolling stock.

A known installation for the removal of oil residues and sludge from the bottom of the tank (patent RU No. 2238155, IPC VVB 9/08, filed March 6, 2003)

SUBSTANCE: installation for draining and cleaning reservoirs from oil product residues, containing a vacuum pump, a pressure pipe, which is connected through a shut-off valve to one of the nozzles in the neck of the collection tank, and a suction pipe of a vacuum pump through another shut-off valve, is connected to a shutoff valve, which is installed on another nozzle in the neck of the collection tank, and the intake device moved along the bottom of the cleaned tank with shut-off and control means, connected by conduit through the check valve with a nozzle at the bottom of the collecting tank. According to the invention, the intake device is made in the form of a removable nozzle with a hollow holder and is a cylindrical cup, on the outside of which with the possibility of vertical movement, an annular float is placed, on the upper surface of which an elastic collar is fixed, covering the cylindrical cup with the possibility of sliding over it. The first annular sealing element is fixed on the bottom surface of the float, while on the side generatrix of the glass in its lower part there are made suction windows, the total area of which is not less than the internal cross-sectional area of the cylindrical glass, to the bottom of which a disk is attached, in which it is aligned an annular groove for installing the second sealing element, and the hollow holder is connected to the pipeline connected through a shut-off valve in the lower part of the tank ra-collector, and is additionally equipped with a nozzle with a shut-off valve for communicating the internal cavity of the intake device with the atmosphere.

Disadvantages: the installation must be placed in a tank; this installation cannot enter the opening of the air tank. In addition, the device does not provide steaming and does not provide for hydrotesting of the tank.

Also known installation for cleaning tanks from residues of petroleum products (patent RU No. 2226129, IPC VV 5/00, claimed 05/30/2002).

The essence is 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 additionally equipped with a gas outlet channel from the aircraft engine to an output unit into which the flow is directed when the cleaning chamber is reloaded; nozzle nozzles with a collector and jet nozzles for supplying water for vaporization; a collector for supplying water for sprinkling of exhaust gases, and the cleaning chamber is made in the form of a flat heat-insulated channel with the possibility of laying pipes in a row with their free flow around the gas-vapor stream from above and below. In this case, a large part of the gas-vapor flow passes between the walls of the cleaning chamber and the pipes (the height of the cleaning chamber is 1.5-2 times larger than the diameter of the pipes), due to which a quick and uniform heating of the pipes is achieved, and deposits are exfoliated from the inner surface of the pipes by external heating and carried aerodynamic pressure to the output unit. The water supply for vaporization in the nozzle nozzles allows for the most complete combustion of aviation fuel and to avoid damage to the aircraft engine under the influence of temperature stresses. When water is supplied for sprinkling, an additional purification of exhaust gases occurs by absorption of harmful emissions from the purification chamber on water jets.

Disadvantages: this device cannot be used when flushing air tanks, since the intake device does not pass through its size through the inlet of the tank. The device is intended only for cleaning the surface of the tank from contamination and does not provide for hydrotesting.

The closest analogue is “A device for washing air tanks” (utility model patent No. 70170, IPC B08B 9/93, filed July 11, 2007)

The essence of this installation is that the device for washing air tanks contains pumps, a washing water tank, fittings with pipelines and is characterized in that the installation is equipped with a unit for preparing steam, transporting washing solution and washing water, a reverse water supply system and a tank turning mechanism.

The steam preparation and transportation unit for washing solution and washing water includes an autonomous steam generator, pumps, a container for washing solution, a tank for washing water, ball valves and low and high pressure pipelines.

The water recycling system consists of an apparatus for cleaning the working solution from contaminants, ball valves and pipelines for supplying water and waste, as well as purified detergents, pipelines for draining the oil-containing solution, sludge and water.

The reservoir rotation mechanism includes a rotary frame connected to the support of the installation bench by means of an axis and a pneumatic drive of rotation of the mechanism.

Disadvantages: this device provides a separate supply of steam to the air tank, at the beginning of steam, then water, moreover, the pump works for the entire period of heating and rinsing with hot water of the air tank, in our case it works only for washing residual condensate and oil products.

The purpose of the proposed device for flushing and hydrotesting of air tanks is: to reduce the cost of electricity, as well as labor costs for dismantling and installation and installation of air tanks on the stand.

The goal is achieved in that a device for washing and hydrotesting of air tanks, containing a washing water tank, a steam generator, a pump with an electric motor, pipes with valves for transporting a steam-water jet and washing water, characterized in that a nozzle is installed on the pipe coming from the steam generator to a pipe connected to the washing water tank is connected to it.

The rinse water tank is connected by a pipeline, with a pump with an electric motor, a nozzle located on the pipeline coming from the steam generator. A pipeline is laid from the pump to enter the air reservoir.

Each pipeline is equipped with an electromagnetic valve to provide a separate supply of a steam-water jet and flushing water into the air tank.

The entire device is located on a mobile platform.

Figure 1 representing the device for flushing and hydrotesting of air tanks, is indicated:

A steam generator 2 is connected to the air tank 1 by means of a pipe on which a nozzle 4, a valve 9 and an electromagnetic valve 10 are installed.

A water flow tank 3 is connected to the air tank 1 by means of a pipeline on which a pump 5, a valve 9 and solenoid valves 11 and 12 are installed.

Both pipelines are interconnected by a pipeline, which at one end is connected to the nozzle, and the other to the pipeline, which goes from the water supply tank 3 to the air tank 1.

To the air tank 1, a flushing and hydraulic testing device is connected using the docking unit 7. To remove air when filling the tank 1, an air valve 13 is provided. To remove accumulated dirt and drainage, a relief valve 8 is provided.

The entire device is mounted compactly on a mobile platform 6.

A device for flushing and hydrotesting of air tanks works as follows:

- to the test air reservoir 1 is supplied the proposed device on a mobile platform 6;

- carry out the docking of the device with the air reservoir 1 using the docking node 7;

- supply water to the flow tank 3 and to the steam generator 2;

- the steam generated in the steam generator passes through the nozzle 4, forming a rarefaction effect, the water in the pipeline connected to the flow capacity of the water 3 passes into the nozzle, forms a steam-air stream;

- the steam-water jet entering the air tank 1 heats up the sediment of oil products, the washing time of the air tank 1 depends on the amount and type of pollution, as well as the pressure of the steam-water jet;

- after heating the sediment of petroleum products in the air tank 1 block the electromagnetic valve 10.

- using the pump 5, the air tank 1 is flushed with cold water with open solenoid valves 11 and 12 located on the inlet pipe. Contaminated water is discharged through a discharge valve 8.

- after removing the remaining condensate residues and pollution products, the discharge valve 8 is closed and the reservoir 1 is filled with water, while the air leaves through the air valve 13.

- then they carry out the hydrotest provided for by the Rules for the Supervision of Air Tanks of Rolling Stock of Railways of the Russian Federation.

When filling the tank with water, the air is completely removed. For hydraulic testing, water should be used with a temperature not lower than + 5 ° С and not higher than + 40 ° С, unless otherwise specified in the technical documentation for the tank.

The test pressure is controlled by two pressure gauges. Pressure gauges should be of the same type, the same accuracy class, measuring range and graduation price.

The test pressure is taken to be equal to the working plus 0.5 MPa (5 kgf / sq. Cm), and the tank test time is at least 10 minutes.

The results of a hydraulic test are considered satisfactory, if not detected: leaks, cracks in the base metal and welding joints; pressure drops on the manometer for the time required to perform the control operation.

- at the end of the test, the water is discharged through the discharge valve 8.

This design of the device for washing and hydrotesting of air tanks was manufactured, tested and used in a number of repair depots of the East Siberian Railway.

Operation of the installation led to an improvement in flushing and hydrotesting of air tanks, a significant reduction in energy consumption, which positively affected the overall quality of repair of locomotives.

Claims (1)

A device for washing and hydrotesting of air tanks, containing a flow tank for washing water, a steam generator, a pump with an electric motor, pipes for transporting a steam-water jet and washing water, characterized in that a nozzle is installed on the pipe coming from the steam generator and a pipe connected to it with a rinse water tank, a rinse water tank is connected by a pipeline to the pump and a nozzle located on the pipeline coming from the steam generator, a water pipe is laid in the air from the pump an ear reservoir, each pipeline is equipped with an electromagnetic valve to provide a separate supply of steam and flushing water to the air reservoir.

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