SU900121A1 - Device for converter checking and graduating consumption transducer - Google Patents

Description

The invention relates to precision instrument making and can be used as an exemplary measuring tool for the calibration and calibration of flow transducers. A device for checking and calibrating flow generators is known, in which the flow generator allows the flow of two media, a liquid and a gas, to be simultaneously generated. This device contains two flow generation circuits and is made on the basis of the SP bell bell. The disadvantage of this device is that only one combination of media, liquid and gas, can be used, and that these media are in contact during operation. It is also known a device for verification and calibration of pipe-piston-type flow transducers containing a test section of a pipeline, a pipe-piston pair, a piston drive, screw-nut transmission with a screw fixed at one end to the pipe-piston tubes X, however, this device does not allow generate costs for several environments, and therefore has limited application in this part. The purpose of the invention is to expand the scope by simultaneously generating the costs of two media. The goal is achieved by the fact that the pipe piston pair is equipped with a second sealed piston installed at a distance from the first one, the cavity enclosed between the pistons is separated by a hermetic partition into two cavities to which an additional pipeline section embedded in the device is connected. The drawing shows the proposed device. The device contains a flow sensor 1, a control unit 2, a piston drive 3 connected via a screw 3900

nut 4 and 5 with piston 6; Piston mounted at distance from piston 6

7 The same as the piston 6, sealed in a pipe and sealed on the rod

8 screw. The cavity between the pistons is divided by a hermetic partition 9

two cavities 10. The test section of the pipeline 11 with a testable device 12 is connected to the pipeline. An additional test section of the pipeline 13 with a testable device 14 is connected to the cavity 10. The outputs of the test instruments are connected to comparing devices 5 and 16, which, in their queue connected to the setpoint 1 flow.

The device works as follows / at a time.

Flow control 1 triggers drive 3 through control unit 2, which, rotating screw 4, moves nut 5, and consequently pistons 6 and 7. The medium flows into the test section 13 from the cavities between the pistons, from the cavities between the pistons and the ends pipes are displaced by the medium in the test area P.

The piston 7 is sealed on the smooth part of the screw stem, which is significantly higher. Shesaetsya the effectiveness of the seal when the screw is low. Working medium compared with the piston seal on the screw part.

The described extrusion circuits form independent hydraulic systems that can operate on different media.

14

The application of the invention preserves the integrity of the power part of the generator design, enables it to work on various compositional normalized flows, for example, water and oil products, liquid and gas.

Claims (2)

1. USSR author's certificate No. 609060, cl. G 0} F 25/00, 1976. 2. USSR author's certificate number 649959, cl. G 01 F 25/00, 1977 (prototype).