SU564532A1 - Device for measuring liquid consumption - Google Patents

Description

one

The invention relates to a device for measuring the flow rate of a liquid and can be used for measuring flow in prismatic or cylindrical channels and pipes, as well as for checking and (calibration of flow meters installed on them).

Devices are known for measuring the flow rate of a fluid by the flow label method consisting of a tag dispenser, detectors, and measuring and recording equipment fl 17.

It is also known a device for measuring the flow rate of a fluid, consisting of a flow tag metering device, placing outside the measuring channel, a separate tank for the liquid label and compressed air, a solenoid valve on the flow tube / connection to the control unit, connects the emu with the measuring unit, , regiot | at ers m and power source8 | 2X,

From here, yy .TycTpOf t "4i cannot be used either by layers of tools, for example, in the bottom channels and collectors, it does not allow to control the duration of the insertion of the mark into the stream and does not provide a quick distribution of the thread along the cross section

channel, which reduces accuracy and flow measurement.

The purpose of the invention is to improve the accuracy of flow measurement and simplify the design of the device.

This is achieved by the fact that the tag dispenser is combined with a reservoir for the liquid tag and compressed air and is made in the form of a thin-walled rod, the lower part of which is located inside the measuring channel, and terminates in a two-winding solenoid valve. Moreover, the main winding is connected to the control unit module controlled by the drive, and the additional winding is connected to the worm of the matching measuring unit to the recorder.

FIG. 1 in the case of a Geden system, a description of the device for the purpose of fluid flow in FIG. 2 is a flow meter dispenser diagram; in fig. 3 is a schematic diagram of the timing of the control module module.

The device consists of a measuring section of the pipeline 1 and a metering dispenser installed in it, made in the form of a rod 2 with a clap 3 on the lower free end. The valve is clamped to the saddle by an 4 gauge, and is opened by means of an electromagnet 5 with the main (power) winding b and the additional (signal) winding 7, the nipple 8 and the pressure gauge 9 are located at the top of the bar. nickname of power supply 11. Detectors of mark 12 and level gauge 13 (for non-pressure flows only) are installed in the pipeline. In the device circuit there are also measuring unit 14, recorder 15 and time sensor 16, In the control unit there is a time master module (Fig. 3) consisting of a power transistor 17, a double button 18, a capacitor 19 and an adjustable resistance 20. The device works in the following way . The dispenser is filled with liquid through a removable kraak, the air is not pumped into it or the compressor through the nipple 8, and the air pressure is monitored by a pressure gauge 9. After the air reaches the specified pressure, the pump or the compressor is turned off and the dispenser is set at the center of the flow cross-section using moving stop. A tag is impulsively introduced into the fluid flow by the dispenser moving along channel 1. To do this, on the control unit 10, the twin button 18 is pressed. When this electromagnet 5 is activated by the action of current, the valve 3 opens at a time, and the dose of the liquid mark is partially filled with the internal volume of tank 2, under the action of compressed air, which occupies the rest of the tank volume, is introduced into the stream. At the same time, the pressure in the tank decreases and the valve 4 closes with spring 4. Since the valve plate is in the form of a flat disk, and the gap between the valve seat and the plate is relatively small, the mark is flat and quickly fills the entire cross section; flow section. The dose of the label can be adjusted by varying the length of time the valve remains open. This is achieved by changing the resistance of the resistor 20 connected in series with the capacitor to the base of transistor 17, the time of the control unit module. The beginning and end of the label entry is recorded on the tape of the recorder 15, to the output of which the additional (signal) winding 7 of the electromagnet 5 is connected. , giving the exact time stamp, and the measuring unit 14, When the entered label, the center of which is rigidly moving at an average speed, reaches the label detector, it changes the parameters of the circle zhayuschey its environment (electrical conductivity or optical density), the bridge balance is disturbed cxeNM, which includes detectors and measuring) unit outputs a signal to the recorder, the tape on which are two of the burst. From the distance between them, it is possible to judge the time of passage of a label of a fixed distance between the detectors, and, consequently, to determine the average velocity and flow rate of the fluid flowing through the pipeline and the Formula of the Backtrack Device; Pss of a flow tag meter, tank for tag and compressed air, electromagnetic valve, hooked up to a control unit, connected by a Q measuring unit, a recorder and a power source, which are different because, in order to improve measurement accuracy and simplify the design, the tag dispenser is combined with a reservoir for a liquid tag and compressed air and is made in the form of a thin-walled rod, the lower part of which is inside the measuring channel and ends with a two-winding solenoid valve, the main volume tky connected to a regulated B: {1vm dadayu1 it module assembly A pravloni, .a-: prisgoedinena additional winding through a matching unit of the measuring unit to the recorder, information sources, the received note in the examination 1, Il'inskii B, M. Contactless cost measurement. Energie, M, 1970, 2, U.S. Patent 3,028,744, Cl, 73-3, 1962,

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