SU1218298A1 - Liquid flow meter - Google Patents

Abstract

The invention relates to a technique for measuring the flow rate of liquids and makes it possible to increase the reliability of measuring the oil flow rate by allowing the operative replacement of a set of values of conversion factors in accordance with a change in operating conditions, for example, when the viscosity of the oil changes, and the state of the working surfaces of the primary converter is changed. In memory block 14, the values of the transform coefficients are stored. To account for changes in the memory block 14 using the control and display unit 13 ne% FIG.

Description

Periodically, the corresponding changes in conversion ratios in sets are entered depending on the operating time of the flow meter using communication from the output of the total consumption indicator 18 to the input of block 13. The second input of block 13 is supplied with a correction signal. The technique relates to measuring the flow of liquids, mainly oil and oil products .

The purpose of the invention is to increase the reliability and accuracy of measuring the oil flow rate by allowing the operational Replacement of a set of values of conversion factors in accordance with changes in operating conditions, for example, when the viscosity of the oil changes, when the state of the working surfaces of the primary converter changes.

On. FIG. 1 shows a block diagram of the proposed device; in fig. 2 is a block diagram of a control and display unit.

The device contains a reference frequency generator 1, a pulse counter 2 electronic key 3, a buffer register 4, a multiplication unit 5, an instantaneous flow indication unit 6, an adder 7, an electronic key 8 and an indicator 9, a primary converter 10 and a pulse shaper, a decoder 11, a set of registers 12, a control and display unit 13, a memory unit 14, a total flow calculation and indication unit 15, including an adder 16, an electronic key 17 and an indicator 18, and the device also contains a frequency divider 19 and a primary converter to vkost (Vis kozime7; p) 20.

The control unit 13 contains a block

21 manual data entry, equipped with an alphanumeric keypad, block

22 input and address generation, equipped with keyboards, switch 23, made in the form of a key scheme, indicator 24, recorder 25, timer 26j, memory control unit 27, executed in the form of a threshold 1218298

This is proportional to viscosity, which is generated by the primary viscosity converter 20, and the encoded signal is fed to the memory control unit, which compares the current viscosity value with the threshold values set. 2 Il.

The analyzer, while the viscometer 20 is connected to the switch 23 and the memory control unit 27, the output of the unit 15 for calculating and indicating the total flow rate and the registers 12 and the blocks are connected to the switch 23. 23, 22 and 27 are connected to the memory block 14.0. The device operates as follows.

The pulses of the reference frequency from the generator 1 are fed to the input of the counter 2 pulses. Via electronic key

5 3, which is opened by a pulse received from the primary converter and pulse generator 10, the binary code of counter 2 is fed to the buffer register 4. Simultaneously

0, a pulse from the initial converter 110 sets the counter 2 to the zero state. At the same time, in the buffer register 4, a code equivalent to the instantaneous flow rate is generated, which is transmitted to the input of multiplication unit 5 and, simultaneously, input to the decoder 11. In memory unit 14, the values of the conversion coefficients, determined during calibration of the primary Q converter 10 and entered into the unit, are stored 14 using the control unit 13. To take into account the effect of changing the state of the working surfaces of the primary converter and its supports, the corresponding changes are periodically introduced into the memory unit 14 using the control unit 13 (correction tiruyuschie .popravki) transform coefficients in the sets of values depending on an operating time meter by using a communication from the output of the total flow indicator 18 .No open the input unit 13. The second input of the control unit is supplied Adjustments

five

ABOUT

3

a pilot signal proportional to the viscosity, which is generated by the viscosity converter 20.

At one of the outputs of the decoder

11, corresponding to a given measurement range, a signal appears, which is fed to the control input of the corresponding register 12.

From the latter, the code of the conversion coefficient is entered at the second input of the multiplication unit 5.

At the output of multiplication unit 5, a code is equivalent to the product of the input codes, which is then fed to blocks 6 and 15 of the indication of instantaneous and total consumption, respectively.

In the process of operation of the proposed device, the control unit 13 functions as follows.

The coded signal from the viscometer 20 is fed to the input of the memory management unit 27, which compares the current viscosity value with the threshold values set, and when it passes through one of the threshold values, the memory command 14 selects the memory sample of the corresponding new set of coefficients transform. The selected set of coefficients in the form of a parallel code is read from memory block 14 and written to registers.

12, replacing the old values found there.

The signal of timer 26 at certain times through the switch 23 is used to connect the viscometer 20 or the total flow unit 15 to the indicator 24 and the register 25, as well as to display and record, respectively, the current viscosity of the oil or the amount of oil pumped to a certain point in time (flow meter operating time since the beginning of operation).

The limit state of the flow meter is indicated by the indicator 24. The signal from the indicator

24, using pre-prepared tables, the operator dials a new conversion factor (KP) value on the keyboard of the block 21, corresponding to the changed state of the flow meter. Through the switch 23 after checking the correctness of dialing on the indicator 24, a new KP procollate value of 8298

It is recorded by the recorder 25 with a time stamp by timer 26. Then, using dialing- (dialing the number of the dialing number of the gearbox and the gearbox number of the block 22, the addressing and

5, using block 21, the translation (recording) of the new KP value into the memory block 14. The KP values are corrected sequentially. After adjustment by the signal operator in the registers 12

0, a new set of KP values is recorded.

Similarly, a conversion is made to the memory block 14 for sampling and visual inspection on the indicator 24 of any KP value.

Claims (1)

Invention Formula 0 A device for measuring the flow of liquids containing a series-connected reference frequency generator, a pulse counter, an electronic key, to the input of which is connected 5 tachometer converter, buffer register, multiplication unit, to the output of which the instantaneous flow indication unit and the total flow indication unit are connected, to The output of the conversion factors is connected to the output of the pulse counter through the decoder, the output is connected to the second input of the multiplication unit, the frequency divider whose input is connected to the output of the reference frequency generator, and the outputs to the control inputs of the instantaneous flow display unit and the total flow indication unit, different to that that, in order to increase the reliability and accuracy of the measurement, the input unit for the conversion coefficients contains additionally entered registers, a memory unit, a control and display unit, and also a viscosity converter, where the control inputs of the registers are connected to the output of the decoder, the code inputs of the registers to the code outputs of the memory unit, and the code outputs of the registers to the second input of the multiplication unit and to the first input of the control and display unit, to the second input of which the converter is connected viscosity, and to the third input - output 5 of the total consumption indication unit, the output of the control and indication unit is connected to the control input of the memory unit. five 0 five 0 Editor I. Segl nick Compiled by Yu. Mruchko Tehred M. Nadi Corrector M. Demchik Order 1127/52 Circulation 706Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Branch PPP Patent, Uzhgorod, st. Project, 4