RU2495401C2 - Apparatus for determining active volumes of evacuated part of article - Google Patents

Abstract

FIELD: physics.

SUBSTANCE: apparatus for determining working volumes of an evacuated part of an article, having a rectangular frame 1, faced by vertical and horizontal walls 2, inside of which there is: a tank 3 with a filling indicator 4, a vacuum metre 5, pointed needle valves 6, 7, 8, 9. The filling indicator 4 of the tank 3, the indicator of the vacuum metre 5 and handles for controlling the pointed needle valves 6, 7, 8, 9 come out on a front vertical control panel, which is the vertical wall 2. The left-side vertical wall 2 is fitted with a nozzle 10 for connecting pipes from a vacuum pump and a nozzle 11 for the connected measured (evacuated) article. The right-side lateral vertical wall 2 is fitted with a nozzle 12 for feeding measurement liquid and a nozzle 13 for feeding air from the atmosphere. The measurement liquid is fed to the apparatus from a standard measurement cylinder (flask) 14, placed on the right side of the apparatus by a pipe 15. There is a handle 16 for moving the apparatus in the top horizontal wall 2. Component parts of the apparatus are connected by detachable pipes made from stainless steel 17.

EFFECT: providing quality and accurate determination of active volumes of the evacuated part of any article, including an article having irregularly shaped pipes for connecting component parts.

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Description

The invention relates to the field of metrology, and in particular to the exact determination of the working volumes of the evacuated part of a product, for example, for laboratory complexes of air sampling and analysis systems from a compressor of a gas turbine aircraft engine during its bench tests.

The technical result of the proposed invention is the provision of high-quality and accurate determination of the working volumes of the evacuated part of any product, including complex-shaped pipelines for connecting the components.

The specified technical result of the present invention is achieved by the fact that in the installation for determining the working volumes of the evacuated part, containing a rectangular frame, lined with vertical and horizontal walls, in the inner cavity of which are located: a tank with a filling indicator, a vacuum gauge, precise needle valves. The tank fill indicator, the vacuum gauge and the control handles for precise needle valves are displayed on the front control panel, which is a vertical wall. On the left side vertical wall there are mounted pipe connection fittings from the vacuum pump and the measured (evacuated) product. On the right side vertical wall there is a fitting for supplying a measured liquid and a fitting for supplying air from the atmosphere. Measured fluid is supplied to the installation from a standard graduated cylinder (flask) located to the right of the installation through a pipeline. On the upper horizontal wall there is a handle for moving the unit. The connection of the components of the installation is made by detachable pipelines made of stainless steel.

The essence of the invention is illustrated in the drawing, where:

figure 1 shows a General view of the installation.

The apparatus for determining the working volumes of the evacuated part contains a rectangular frame 1, lined with vertical and horizontal walls 2, in the inner cavity of which are located: tank 3 with a fill indicator 4, a vacuum gauge 5, precise needle valves 6, 7, 8, 9. The fill indicator 4 tanks 3, the vacuum gauge 5 and the control knobs for precise needle valves 6, 7, 8, 9 are displayed on a vertical front panel representing a vertical wall 2. A fitting 10 is installed on the left side vertical wall 2 for connecting the piping rows from the vacuum pump and the connection 11 for connection of pipelines from the measured (a suction) articles. A fitting 12 for supplying a measured liquid and a fitting 13 for supplying air from the atmosphere are mounted on the right side vertical wall 2. Measured fluid is supplied to the installation from a standard graduated cylinder (flask) 14, located to the right of the installation, through pipeline 15. On the upper horizontal wall there is a handle 16 for moving the installation. The connection of the components of the installation is made by detachable pipelines made of stainless steel 17.

Installation for determining the working volume of the evacuated part works as follows:

connect to the installation through the nozzle 10 the vacuum pump and the nozzle 11 measured (evacuated) product. Close the valve 6. Pour the measuring fluid in the required quantity into the graduated cylinder 14 and the pipe 15 connected to the unit through the nozzle 12, lower the pipeline 15 into the graduated cylinder, and if necessary add liquid to the graduated cylinder to the required level. Close valve 7, and open valves 8 and 9, create a vacuum in the system, controlling the specified vacuum gauge 5 located on the front control panel mounted on the frame 1. Having received the necessary vacuum in the system, close valve 9 and turn off the vacuum pump, maintain a certain time and fix the vacuum gauge 5. Open the valve 6 and after a certain time fix the vacuum gauge 5 and the liquid level in the measuring cylinder 14, while monitoring the filling of the tank 3 according to the indicator is full I 4. The liquid level in the graduated cylinder 14 will fall below the initial one, and in the tank 3 will rise due to the discharge, until the atmospheric pressure acting on the fluid in the graduated cylinder 14 is in equilibrium with the pressure above the fluid in the tank 3. Further open valve 7 to restore atmospheric pressure in the system through the nozzle 13. Close valve 7 and after a certain time fix the level of the measured liquid (source) in the measuring cylinder. Close valve 6. Next, process the measurement results.

The use of this invention will allow to provide high-quality and accurate determination of the active volumes of the evacuated part in the system of sampling and analysis of air samples from the compressor of a gas turbine aircraft engine during its bench tests.

Sources of information taken into account when compiling the application: when compiling the application, the applicant did not identify the closest analogues and prototype of the claimed device described in public sources.

Claims (1)

Installation for determining the working volumes of the evacuated part of the product, containing a rectangular frame, lined with vertical and horizontal panels, in the internal cavity of which there is a tank with a filling indicator, pipelines with connection fittings, characterized in that it is equipped with precise needle valves, a vacuum gauge and a standard graduated cylinder, and on the front surface of the vertical control panel there is a tank fill indicator, valve handles and a gauge indicator, and a measured qi the cylinder is connected by means of a flexible pipe to the fitting for supplying liquid, while the fitting for connecting the vacuum pump, the measured product and the supply of atmospheric air are placed on the side vertical panels.