Electric control system of circulating intermittent pumping type hydraulic pumping unit

Abstract

An electric control system of a circulating intermittent pumping type hydraulic pumping unit relates to the field of automatic control of hydraulic pumping units and comprises a hydraulic pumping unit and a control system, the control system is connected with a sensor, a valve and a motor in the hydraulic pumping unit through lines, the hydraulic pumping unit is provided with a valve block, and an electric ball valve is arranged in the valve block and connected with oil cylinders respectively. The oil pumping unit can be connected with multiple wells through the valve block, the operation time of each well can be controlled through the control system, the original mode of controlling two wells to work is changed into the mode of controlling multiple wells to work and controlling the oil pumping unit to work through the control system, safe and stable operation under the working condition of an intermittent oil pumping well is achieved, the input cost is low, and the utilization rate of the oil pumping unit is increased. And personnel operation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic oil pumping unit automation control, especially a kind of cyclic interval pumping type hydraulic oil pumping unit electric control system. BACKGROUND

[0002] At present, automatic oil-supplying hydraulic oil pumping unit equipment is widely applied due to its simple structure, convenient installation and low cost, but it also has the problems that personnel operation is needed to start and stop control in the oil well needing interval pumping condition, the hydraulic oil pumping unit needs to stop working during intermittent oil well, the utilization rate is low, the hydraulic oil pumping unit can only control two oil wells or one oil well to work, and the input cost is large. SUMMARY

[0003] The utility model aims at providing a kind of cyclic interval pumping type hydraulic oil pumping unit electric control system to solve the problem that the utilization rate of hydraulic oil pumping unit is low and the oil well needing interval pumping condition cannot be automatically switched.

[0004] The technical scheme of the utility model:

[0005] A kind of cyclic interval pumping type hydraulic oil pumping unit electric control system includes hydraulic oil pumping unit and control system, control system is connected through line sensor in hydraulic oil pumping unit, valve and motor, wherein hydraulic oil pumping unit is equipped with valve block, electric ball valve is in valve block, is connected with cylinder respectively, can be connected with multiple wells by valve block, and by control system, the running time of each well can be controlled;

[0006] The hydraulic oil pumping unit comprises a main pump (1), a main pump coupling (2), an oil supplement pump (3), an oil supplement pump coupling (4), an electromagnetic ball valve (5), a low-pressure ball valve (6), an air filter (7), an oil tank (8), a one-way valve (9), a pressure sensor (10), a mechanical overflow valve (11), a high-pressure ball valve (12), an electric ball valve (13), a valve block (14), an oil cylinder, a main motor (16), and an oil supplement motor (17), wherein the oil supplement motor (17) is connected to the oil supplement pump (3) through the oil supplement pump coupling (4), the inlet of the oil supplement pump (3) is connected to the oil tank (8) through a pipeline, the outlet of the oil supplement pump (3) is connected to a first one-way valve (9.1) and a second one-way valve (9.2) through pipelines, the first one-way valve (9.1) is connected to a first high-pressure ball valve (12.1), a first mechanical overflow valve (11.1), a first pressure sensor (10.1), a first electromagnetic ball valve (5.1), and the A port of the main pump (1) through pipelines, the second one-way valve (9.2) is connected to a second high-pressure ball valve (12.2), a second mechanical overflow valve (11.2), a second pressure sensor (10.2), a second electromagnetic ball valve (5.2), and the B port of the main pump (1) through pipelines, the first electromagnetic ball valve (5.1) and the second electromagnetic ball valve (5.2) are connected to the oil tank (8) through pipelines, the first mechanical overflow valve (11.1) and the second mechanical overflow valve (11.2) are connected to the oil tank (8) through pipelines, the high-pressure ball valve (12) is connected to the common inlet of the valve block (14) through a hydraulic rubber tube, two electric ball valves (13) are arranged in the valve block (14), the oil cylinder (15) is connected to the outlet of the valve block (14) through a pipeline, a displacement sensor is arranged in the oil cylinder (15), the main motor (16) is connected to the main pump (1) through the main pump coupling (2), the low-pressure ball valve (6) is installed at the bottom of the oil tank and is opened when oil is discharged, and the air filter (7) is installed at the upper part of the oil tank and is opened when oil is added.

[0007] The valve block (14) is provided with two valve blocks, each of which is provided with two electric ball valves and is connected to two oil cylinders, the two outlets of a first valve block (14.1) are connected to an oil cylinder A (15.1) and an oil cylinder B (15.2), an electric ball valve I (13.1) and an electric ball valve II (13.2) are installed on the first valve block (14.1), the two outlets of a second valve block (14.2) are connected to an oil cylinder C (15.3) and an oil cylinder D (15.4), an electric ball valve III (13.3) and an electric ball valve IV (13.4) are installed on the second valve block (14.2), a first high-pressure ball valve (12.1) is connected to the common inlet of the first valve block (14.1) through a hydraulic rubber tube, and a second high-pressure ball valve (12.2) is connected to the common inlet of the second valve block (14.2) through a hydraulic rubber tube.

[0008] The control system comprises a controller PLC 19, a frequency converter No.1 25, a frequency converter No.2 24, a switch 21, a touch screen 20, a communication module 22, a remote monitoring center 23, wherein the controller PLC 19 is connected with the switch 21 through a network cable, the switch 21 is connected with the touch screen 20 through a network cable, the switch 21 is connected with the communication module 22 through a network cable, the communication module 22 is connected with the remote monitoring center 23 through wireless remote communication, the switch 21 is connected with the frequency converter No.1 25 through a network cable, the frequency converter No.1 25 is connected with the main motor 16 through a power cable, the switch 21 is connected with the frequency converter No.2 24 through a network cable, the frequency converter No.2 24 is connected with the oil supplement motor 17 through a power cable, the controller PLC 19 is connected with the pumping unit sensor 26 through a signal line, the pumping unit sensor 26 comprises a first pressure sensor 10.1, a second pressure sensor 10.2 and built-in displacement sensors of an oil cylinder A 15.1, an oil cylinder B 15.2, an oil cylinder C 15.3 and an oil cylinder D 15.4, the controller PLC 19 is connected with the pumping unit electric valve 27 through a signal line, and the pumping unit electric valve 27 comprises a first electromagnetic ball valve 5.1, a second electromagnetic ball valve 5.2 and electric ball valves I, II, III and IV 13.1, 13.2, 13.3 and 13.4.

[0009] An electric control system application of a cyclic intermittent hydraulic pumping unit

[0010] The controller PLC 19 collects signals of the first pressure sensor 10.1, the second pressure sensor 10.2 and the built-in displacement sensors of the four oil cylinders, and the sensor converts the detection value into a 4-20mA electric signal and transmits the electric signal to the controller PLC 19.

[0011] The controller PLC 19 sends instructions to control the first electromagnetic ball valve 5.1, the second electromagnetic ball valve 5.2, the electric ball valves I, II, III and IV 13.1, 13.2, 13.3 and 13.4, the frequency converter No.1 25 and the frequency converter No.2 24, the electromagnetic ball valve and the electric ball valve control the on-off of each oil circuit of the hydraulic pumping unit, the oil supplement motor 17 provides a power source for the oil supplement pump of the hydraulic pumping unit, the main motor 16 provides a power source for the main pump of the hydraulic pumping unit, the frequency converter No.1 25 provides a power source for the main motor, realizes different rotating speeds and different rotating directions of the main motor 16, the frequency converter No.2 24 provides a power source for the oil supplement motor 17, realizes different rotating speeds of the oil supplement motor 17, the switch 21 is a bridge for information interaction of each unit of the control system, the communication module 22 and the touch screen 20 realize information interaction with the controller PLC 19 through the switch 21, the communication module 22 is a bridge for communication between the remote monitoring center 23 and the controller PLC 19, and realizes remote information interaction of the remote monitoring center 23 on the hydraulic pumping unit.

[0012] The utility model discloses the beneficial technical effects:

[0013] The utility model discloses on the original hydraulic oil pumping unit replaces electric control system, installs the valve block with electric ball valve, changes the original control two well work, changes to can control multiwell work, controls the oil pumping unit work through control system, realizes safe, stable operation under the condition of interval pumping well, and the input cost is low, and the utilization rate is high, and the personnel operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structural schematic diagram of the invention.

[0015] Figure 2 It is control system connection diagram of the invention.

[0016] Figure 3 It is flow chart of the invention. DETAILED DESCRIPTION

[0017] The invention will be further described in detail below in combination with the drawings and specific embodiments. EMBODIMENT

[0018] A kind of cyclic interval pumping hydraulic oil pumping unit electric control system application

[0019] Before starting, first open the first high-pressure ball valve 12.1, the first high-pressure ball valve 12.2 of hydraulic oil pumping unit;

[0020] Select the left and right two oil cylinders of work group one and work group two;Set parameters;

[0021] Set parameters in touch screen 80, set a group of operating parameters and two group operating parameters in parameter setting page as follows:

[0022] A group of operating parameters: left oil cylinder selection: A, right oil cylinder selection: C, operating frequency (Hz): 30.0, stroke (m): 2.50, starting point (mm): 300, operating time (min): 2880, stop time (min): 0.

[0023] Two group operating parameters: left oil cylinder selection: B, right oil cylinder selection: D, operating frequency (Hz): 25.0, stroke (m): 2.80, starting point (mm): 200, operating time (min): 2880, stop time (min): 0.

[0024] 2. A start button is provided in the home page picture of touch screen 20, if necessary, click the start button.

[0025] 3. Work group one runs, set operating time, and the specific operating steps are as follows

[0026] 3.1 The first electromagnetic ball valve 5.1 and the second electromagnetic ball valve 5.2 are controlled by the controller PLC 19 to automatically close, the electric ball valve I 13.1 on the first valve block 14.1 is opened, and the electric ball valve II 13.2 is closed; the electric ball valve III 13.3 on the second valve block 14.2 is opened, and the electric ball valve IV 13.4 is closed.

[0027] 3.2 The oil supplement motor 17 is operated, and the oil supplement motor 17 drives the oil supplement pump 3 through the oil supplement pump coupling 4 to operate, and oil is injected into the oil cylinder A 15.1 and the oil cylinder C 15.3. When the oil injection amount meets the requirement, the oil supplement motor 17 stops, and the oil supplement pump 3 stops.

[0028] 3.3 The main motor 16 is rotated in the positive direction, and the main motor 16 drives the main pump 1 through the main pump coupling 2 to rotate in the positive direction. At this time, the piston of the oil cylinder A 15.1 rises, and the piston of the oil cylinder C 15.3 descends.

[0029] 3.4 When the oil cylinder A 15.1 reaches the upper reversing point or the oil cylinder C 15.3 reaches the lower reversing point, the main motor 16 is reversed, and the main motor 16 drives the main pump 1 through the main pump coupling 2 to reverse. At this time, the piston of the oil cylinder A 15.1 descends, and the piston of the oil cylinder C 15.3 rises.

[0030] 3.5 When the oil cylinder A 15.1 reaches the lower reversing point or the oil cylinder C 15.3 reaches the upper reversing point, the main motor 16 is rotated in the positive direction, and the main motor 16 drives the main pump 1 through the main pump coupling 2 to rotate in the positive direction. At this time, the piston of the oil cylinder A 15.1 rises, and the piston of the oil cylinder C 15.3 descends.

[0031] 3.6 When the oil cylinder is out of oil, the oil supplement motor 17 is operated, and the oil supplement motor 17 drives the oil supplement pump 3 through the oil supplement pump coupling 4 to operate, and oil is injected into the oil cylinder A 15.1 and the oil cylinder C 15.3. When the oil injection amount meets the requirement, the oil supplement motor 17 stops, and the oil supplement pump 3 stops.

[0032] 4. When the working time of a group reaches the set value, the group stops working, the first electromagnetic ball valve 5.1 and the second electromagnetic ball valve 5.2 are automatically opened, the electric ball valve I 13.1 on the first valve block 14.1 is opened, and the electric ball valve II 13.2 is closed. The electric ball valve III 13.3 on the second valve block 14.2 is opened, and the electric ball valve IV 13.4 is closed. The oil supplement motor 17 stops operating, and the oil supplement pump 3 stops operating. The main motor 16 stops operating, and the main pump 1 stops operating.

[0033] 5. When the set stop time of a group of work reaches, the first electromagnetic ball valve 5.1 and the second electromagnetic ball valve 5.2 are automatically closed, the electric ball valve I 13.1 on the first valve block 14.1 is closed, and the electric ball valve II 13.2 is opened. The electric ball valve III 13.3 on the second valve block 14.2 is closed, and the electric ball valve IV 13.4 is opened.

[0034] 6, Workgroup 2 runs, set running time, the specific steps as follows

[0035] 6.1 oil motor 17 runs, oil motor 17 through the oil pump coupling 4 driven oil pump 3 run, to the cylinder B 15.2, cylinder D 15.4 injection. When the injection amount is satisfied, when the oil motor 17 stop, that is, the oil pump 3 stop.

[0036] 6.2 main motor 16 forward, main motor 16 through the main pump coupling 2 driven main pump 1 positive rotation, at this time the cylinder B 15.2 piston rises, cylinder D 15.4 piston down.

[0037] 6.3 when the cylinder B 15.2 to reach the upper reversal point or cylinder D 15.4 to reach the lower reversal point, main motor 16 reverse, main motor 16 through the main pump coupling 2 driven main pump 1 reverse, at this time the cylinder B 15.2 piston down, cylinder D 15.4 piston up

[0038] 6.4 when the cylinder B 15.2 to reach the lower point or cylinder D 15.4 to reach the upper reversal point, main motor 16 forward, main motor 16 through the main pump coupling 2 driven main pump 1 positive rotation, at this time the cylinder B 15.2 piston rises, cylinder D 15.4 piston down.

[0039] 6.5 when the oil cylinder is short of oil, oil motor 17 runs, oil motor 17 through the oil pump coupling 4 driven oil pump 3 run, to the cylinder B 15.2, cylinder D 15.4 injection. When the injection amount is satisfied, when the oil motor 17 stop, that is, the oil pump 3 stop.

[0040] 7. When the two running time reaches the set value, the two groups of work stop, the first electromagnetic ball valve 5.1, the second electromagnetic ball valve 5.2 automatically open, the first valve block 14.1 on the electric ball valve I 13.1 close, electric ball valve II 13.2 open. The second valve block 14.2 on the electric ball valve III 13.3 close, electric ball valve IV 13.4 open. Oil motor 17 stop running, that is, the oil pump 3 stop running, main motor 16 stop running, that is, the main pump 1 stop running.

[0041] 8. When the two groups stop setting time, jump to process 3. After a group and two groups according to the set parameters cycle execution.

[0042] 9. If the cylinder A 15.1 does not need to work, you can set the parameters in the touch screen page one group running parameters and two group running parameters set left side of the oil cylinder selection: B.

[0043] 10. When the machine needs to stop, press the stop button on the home page of the touch screen. If in the first group of working processes, the first electromagnetic ball valve 5.1 and the second electromagnetic ball valve 5.2 are automatically opened, the electric ball valve I 13.1 on the first valve block 14.1 is opened, and the electric ball valve II 13.2 is closed. The electric ball valve III 13.3 on the second valve block 14.2 is opened, and the electric ball valve IV 13.4 is closed. The oil supplement motor 17 stops running, i.e. the oil supplement pump 3 stops running, and the main motor 16 stops running, i.e. the main pump 1 stops running. If in the second group of working processes, the first electromagnetic ball valve 5.1 and the second electromagnetic ball valve 5.2 are automatically opened, the electric ball valve I 13.1 on the first valve block 14.1 is closed, and the electric ball valve II 13.2 is opened. The electric ball valve III 13.3 on the second valve block 14.2 is closed, and the electric ball valve IV 13.4 is opened. The oil supplement motor 17 stops running, i.e. the oil supplement pump 3 stops running, and the main motor 16 stops running, i.e. the main pump 1 stops running.

[0044] Note: The stop time of the first group and the stop time of the second group are set according to the actual working conditions. When set to 0, there is no time interval, and the subsequent action is executed immediately. When set to non-0, the subsequent action is executed when the stop time is up.

[0045] 1) In terms of power saving, the inter-cycle hydraulic pumping unit can select the left and right cylinders according to the size of the oil well load, which can save 5% of power compared with the original hydraulic pumping unit.

[0046] 2) In terms of usage rate, the use of the inter-cycle hydraulic pumping unit can improve the original hydraulic pumping unit by 100%.

[0047] 3) In terms of cost, the use of the inter-cycle hydraulic pumping unit can reduce the cost by 40% compared with the original hydraulic pumping unit.

[0048] 4) In terms of operation, the use of the inter-cycle hydraulic pumping unit can automatically cycle and stop without the need for personnel to participate.

[0049] 5) In terms of oil production, the use of the inter-cycle hydraulic pumping unit is the same as the original hydraulic pumping unit.

Claims

1. An electrical control system for a circulating hydraulic pumping unit, comprising a hydraulic pumping unit and a control system, characterized in that: The control system is connected to sensors, valves, and motors within the hydraulic pumping unit via wiring; The hydraulic pumping unit includes a main pump (1), a main pump coupling (2), a replenishing pump (3), a replenishing pump coupling (4), a solenoid ball valve (5), a low-pressure ball valve (6), an air filter (7), an oil tank (8), a check valve (9), a pressure sensor (10), a mechanical relief valve (11), a high-pressure ball valve (12), an electric ball valve (13), a valve block (14), a cylinder, a main motor (16), and a replenishing motor (17), wherein the replenishing motor (17) is connected to the main pumping unit via a hydraulic pump (1). The oil replenishing pump coupling (4) is connected to the oil replenishing pump (3). The inlet of the oil replenishing pump (3) is connected to the oil tank (8) via a pipeline. The outlet of the oil replenishing pump (3) is connected to the first check valve (9.1) and the second check valve (9.2) via pipelines. The first check valve (9.1) is connected to the first high-pressure ball valve (12.1), the first mechanical relief valve (11.1), the first pressure sensor (10.1), the first solenoid ball valve (5.1), and the A port of the main pump (1) via pipelines. The second check valve (9.2) is connected to the second high-pressure ball valve (12.2), the second mechanical relief valve (11.2), the second pressure sensor (10.2), the second solenoid ball valve (5.2), and the B port of the main pump (1) via pipelines. The first solenoid ball valve (5.1) and the second solenoid ball valve (5.2) are connected to the oil tank (8) via pipelines. The first mechanical relief valve (11.1) and the second mechanical relief valve (11.2) are connected to the oil tank (8) via pipelines. Oil tank (8); High pressure ball valve (12) is connected to the common inlet of valve block (14) through hydraulic hose. There are two electric ball valves (13) in valve block (14). Oil cylinder (15) is connected to the outlet of valve block (14) through pipeline. Displacement sensor is installed in oil cylinder (15). Main motor (16) is connected to main pump (1) through main pump coupling (2). Low pressure ball valve (6) is installed at the bottom of oil tank and is opened when draining oil. Air filter (7) is installed at the top of oil tank and is opened when refueling. The valve block (14) is provided in two parts, and each valve block is provided with two electric ball valves, which are connected to two oil cylinders respectively. The two outlets of the first valve block (14.1) are connected to oil cylinder A (15.1) and oil cylinder B (15.2) respectively. Electric ball valve I (13.1) and electric ball valve II (13.2) are installed on the first valve block (14.1). The two outlets of the second valve block (14.2) are connected to oil cylinder C (15.3) and oil cylinder D (15.4) respectively. Electric ball valve III (13.3) and electric ball valve IV (13.4) are installed on the second valve block (14.2). The first high-pressure ball valve (12.1) is connected to the common inlet of the first valve block (14.1) through a hydraulic hose. The second high-pressure ball valve (12.2) is connected to the common inlet of the second valve block (14.2) through a hydraulic hose. The control system includes a PLC controller (19), a No. 1 frequency converter (25), a No. 2 frequency converter (24), a switch (21), a touch screen (20), a communication module (22), and a remote monitoring center (23). The PLC controller (19) is connected to the switch (21) via a network cable. The switch (21) is connected to the touch screen (20) via a network cable. The switch (21) is connected to the communication module (22) via a network cable. The communication module (22) is connected to the remote monitoring center (23) via wireless remote communication. The switch (21) is connected to the No. 1 frequency converter (25) via a network cable. The No. 1 frequency converter (25) is connected to the main motor (16) via a power cable. The switch (21) is connected to the No. 2 frequency converter (24) via a network cable. The No. 2 frequency converter (24) is connected to the oil replenishment motor (17) via a power cable. The PLC controller (19) is connected to the pumping unit sensor (26) via a signal line. The pumping unit sensor (26) includes a first pressure sensor (10.1), a second pressure sensor (10.2), and a cylinder A. (15.1), Cylinder B (15.2), Cylinder C (15.3), and Cylinder D (15.4) have built-in displacement sensors. The controller PLC (19) is connected to the pumping unit electric valve (27) via a signal line. The pumping unit electric valve (27) includes a first solenoid ball valve (5.1), a second solenoid ball valve (5.2), and electric ball valves I (13.1), II (13.2), III (13.3), and IV (13.4).

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