SU1423795A2 - Device for automatic control of deep-well pumping unit of low-output petroleum wells - Google Patents

Abstract

The invention makes it possible to increase the measurement accuracy of the heels of pulses of the force sensor, which limits the use of a rocking chair. The force sensor 1, the latch 2 of the zero level and (| s ()) are fixed between each other in series. The 4th run sensor is connected to the inputs of the block 5 for determining (.) Mept of the maximum and block 6 for determining the moment of the minimum. The outputs of the control unit 7 are connected respectively to the outputs of the comparison circuit 8, blocks 5 and 6, voltage drivers 3 and 9, and coincidence circuit 10. The outputs of block 7 are connected respectively to one of the divider 11 and the block 12 of memory, to one of the inputs of the counter 14, the number of cycles of operation of the pump, and to the input of the counter 15, the number of Nikles of pump non-use. The divider 11, the remaining two inputs of which are connected to the outputs of the counter 13 and block 12, is connected to the output of circuit 8 with its output. Trigger 16, at | 10 match patterns. Two outputs of the counter 13 are connected to the second input (.1 of the block 12 and one of the inputs of the circuit 19.; 1, the output of the counter 14 is connected to the second input of the circuit 19 and the first input of the circuit K). The bottom of the output of the counter 15 is connected with the third N. of the feed of the circuit 19 and the second input of the circuit 10 2 Il. (L

Description

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The invention relates to oil production, it may be used in the field of automatic operation of low-production oil wells and is an extension of the known device according to the basic author. St. No. 603744.

The purpose of the invention is to improve the accuracy in measuring the pulse duration of the force sensor, which determines the useful work of the rocking chair.

FIG. I depicts a block diagram of the

device, in FIG. 2 timing diagrams of the signals of the force and stroke sensors.

The device contains a force sensor 1, a latch 2 pulling the level and a volt (1 |) of the third shaper of 3 rms, connected with each other after the signal, the 4 stroke sensor connected simultaneously to i.im 6, io-ka 5 moment maxmax and b. luke 6 McjMcirra minimum definitions, b. yuc 7

control, to the inputs of which are connected Q If T // o; ; ), () 47 (i, then the second scheme 8 compared, respectively, the outputs of the second scheme 8 compared with the expres | a11. I wrote about the decrease in the occurrence , second formiro

voltage guide 3, first voltage driver 9 and circuit I) match, and outputs of control unit 7 are connected 25 respectively to one of the dividers I1 1 1 n of memory 12, to the input of counter 13 of the pulse width of sensor I of efforts , to one of the inputs of the counter 14 the number of cycles of operation of the pass and to the input of the counter 15 the number of cycles of the pump not filled. Divider II, the two remaining inputs of which are connected to the outputs of the counter 13 and the memory block 12, is connected by its output to the input of the second comparison circuit 8. Trigger 16 Control 30

The operation of the relay 17 in block 18 of the engine rocking motor, receives signals from the outputs of the first circuit 19 and the circuit 10 of coincidence, the other two outputs of the counter 13 are connected to another input of the memory block 12 and one of the inputs of the first comparison circuit 19, two

35

In order to verify the reliability of the signal for a decrease in the level of b.uk 7 11), the trigger starts counters 14 and 15, which count the number of cycles of pump operation and the number of cycles of pump not filling.

The contents of the counter 15 will be one more. After eight cycles of swing, circuit 10 compares the number of pulses of counter 15 and counter 14. If the contents of counter 15 are less than the contents of counter 15, then the appearance of a signal that the level in the annulus has decreased is considered random and the control unit restores the circuit to its original state if conversely, then at the output of the W of the coincidence circuit, a signal is generated that switches the trigger 16, as a result of which the relay 17 contact: 1 motor turns off.

Liquid accumulation time

the output of counter 14 — with a different input — is transmitted by counters 13, 14, and 15. With match 19 and one of the inputs of circuit 10, the matches and two outputs of counter 15 are with the third input of the first comparison circuit 19 and the second input of circuit 10.

The device works as follows.

By the voltage driver 9, pulses with a frequency of 50 Hz are passed through the control unit 7. After counting the combined binary counter of a certain number of pulses at the output of the first circuit 19

The signal from the output of the sensor 1 of the post-comparison output is generated, the signal switches to the input of the clamp 2 of the zero level of the chamomile prigter 16 to the initial state

operation of the relay 17 and the engine starts to compress the pumping unit. Cycle

and is fixed at the zero level from above, which makes it possible to measure the length t. The signal from the zero-level clamp output is fed to the input of the second voltage generator 3 to form pulses with the leading and trailing edges necessary for passing through the digital elements.

The signal from the output of the 4 stroke sensor is received.

Formula and: anniversary

A device for automatic control of a downhole pump installation of low-yield oil wells according to the author. St.

It is located at the inputs of blocks 5 and 6 of the definition of mono 55 - 03744, characterized in that, with the aim of the max and minimum ment. Since the moment of accuracy increase, the second minimum voltage driver has also been added to the minimum signal of sensor 4.

the counter 13 measures the length of the input, which is connected to the latch pin tci until the signal level of the moment detection unit is detected

counter 13.

maximum sensor 4 stroke (signal at the output of block 5). The resulting value / o, equal to half the period of operation of the pump G / 2. written to memory block 12. The counter 13 is zeroed out, the measurement of the duration begins until the signal of the force sensor 1 drops to the latching level, i.e. when the signal from the force sensor 1 is still high.

Measurements of durations / o and t are made by counting pulses with a frequency of 50 Hz

After counting the pulse durations, til and t are fed to divider 11, where /// o division is initiated. The second comparison scheme compares the obtained value of m // n with a constant value (1.0476.

If m // (, 047 ()., Then the pump operates with normal filling. In the next UMK.ie, operation 1: 11) of the pump, the same measurements and comparisons continue.

If T // o; ; ), () 47 (i, then the second scheme 8 is comparable to the expression of a | a11. Sishal about a decrease in ypcjBHH in i dental space,

In order to verify the reliability of the signal for a decrease in the level of b.uk 7 11), the trigger starts counters 14 and 15, which count the number of cycles of pump operation and the number of cycles of pump not filling.

The contents of the counter 15 will be one more. After eight cycles of swing, circuit 10 compares the number of pulses of counter 15 and counter 14. If the contents of counter 15 are less than the contents of counter 15, then the appearance of a signal that the level in the annulus has decreased is considered random and the control unit restores the circuit to its original state if conversely, then at the output of the W of the coincidence circuit, a signal is generated that switches the trigger 16, as a result of which the relay 17 contact: 1 motor turns off.

Liquid accumulation time

counter counters 13, 14 and 15. C

The counters are 13, 14 and 15. From

By the voltage driver 9, pulses with a frequency of 50 Hz are passed through the control unit 7. After counting the combined binary counter of a certain number of pulses at the output of the first circuit 19

comparison, a signal is produced, switching the prigter 16 to its initial state

repeats.

Formula and: anniversary

max. bkk (at the moment there are a lot of, - and Л г чика чика move, the output of which is single time (; connected to the unit for determining the maximum torque and the unit for determining

minimum time, the outputs of the maximum moment and minimum moment determining blocks and the second voltage driver are connected to the control unit.

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Claims (1)

Claim A device for automatic control of a deep-well pumping unit of low oil production wells according to ed. St. No. 603744, characterized in that, in order to improve accuracy, a second voltage driver is additionally introduced into it, the input of which is connected to the zero level lock of the maximum moment detection unit, the minimum moment determination unit and the travel sensor, the output of which is simultaneously connected to the maximum moment determination unit and a unit for determining the minimum moment, and the outputs of the units for determining the maximum moment and the minimum moment and the second voltage driver are connected to the control unit.