Automatic control device for measuring liquid level of gathering and transportation settling tank

Abstract

The utility model discloses an automatic control device for measuring the liquid level of a gathering and transportation settling tank, which comprises a measuring platform and an oil storage tank, a switching power supply, a motor driver, a measuring device and an executing mechanism are respectively arranged on the measuring platform, and a metal ball floats in the oil storage tank and is connected with one end of a rope. The other end of the rope penetrates through the measuring device and is connected with the executing mechanism; the measuring device is further connected with an MCU control device through a transmitter, the output end of the MCU control device is connected with the executing mechanism, the output end of the MCU control device is further in signal connection with a communication device, and the communication device is connected with a ground control station in a wired and wireless mode. According to the automatic control device for measuring the liquid level of the gathering and transportation settling tank, the problems that manual measurement is needed and measurement is inaccurate in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oilfield measurement, and particularly relates to an automatic control device for measuring the liquid level of a gathering and transportation settling tank. Background Art

[0002] Oil needs to be extracted from the formation through the oil production process, and then through multiple processes such as demulsification, dehydration, degassing, sedimentation, impurity removal, oil-water separation, and oil-gas separation to obtain oil meeting the refining standards. This process is very important in oilfield production.

[0003] During the process of oil extraction, the freshly extracted oil will settle in the crude oil storage tank. The oil tank contains gas, oil, water, and a small amount of impurities such as sediment, which are distributed in different regions according to their densities. In order to obtain heavy oil meeting the refining standards in real time, each oilfield needs to accurately master the oil-water liquid level information in the settling tank, and usually requires operators to climb onto the tank body regularly for liquid level measurement.

[0004] However, for the extreme weather in alpine and high-wind oilfield operation areas and the manual measurement conditions of large gathering / settling tanks with a volume of 15,000 cubic meters, there are many oil-water interface measurement methods with different technologies, inaccurate measurement, and no actual application of relevant oil-water liquid level measurement devices. Many operation areas still use the traditional manual dipstick method for measurement. Therefore, researching an automatic control device for measuring the liquid level of a gathering and transportation settling tank with high cost performance, safety, stability, and ensuring on-site real-time performance is an urgent problem for practitioners in the same industry. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic control device for measuring the liquid level of a gathering and transportation settling tank, which solves the problems of manual measurement and inaccurate measurement in the prior art.

[0006] The technical solution adopted by the utility model is that an automatic control device for measuring the liquid level of a gathering and transportation settling tank includes a measurement platform, on which a switching power supply, a measuring device, and an actuator are respectively arranged. It also includes an oil storage tank, in which a metal ball floats. One end of a rope is connected to the metal ball, and the other end of the rope passes through the measuring device and is connected to the actuator;

[0007] The measuring device is also connected to a transmitter through a signal line, the transmitter is connected to an MCU control device through a signal line, the output end of the MCU control device is signal-connected to the actuator, the output end of the MCU control device is also connected to a communication device in wired and wireless manners, the communication device is connected to a ground control station in wired and wireless manners; the entire device is powered by a switching power supply.

[0008] The characteristics of the utility model also lie in:

[0009] The measuring device includes a tension sensor which is arranged on the measuring platform. A pulley is connected below the tension sensor. It also includes a fixed bracket arranged on the measuring platform. A pulley encoder is connected to the lower end of the fixed bracket. A rope passes through the pulley, the tension sensor, the pulley encoder and is connected to the actuator in sequence. The tension sensor and the pulley encoder are also respectively connected to the MCU control device through signal lines.

[0010] The actuator includes an explosion-proof motor, a motor driver and a winding disc. The explosion-proof motor and the winding disc are both installed on the measuring platform. The explosion-proof motor and the winding disc are coaxially arranged. The rope passes through the pulley encoder and then winds around the winding disc. It also includes a motor driver installed on the measuring platform. The motor driver transmits the control signal of the MCU control device to the explosion-proof motor to control its movement.

[0011] The communication device includes a wired transmission mode RS-485 and a wireless transmission mode LoRaWAN. The wired transmission mode RS-485 and the wireless transmission mode LoRaWAN are bidirectionally redundant.

[0012] The ground control station is an industrial control computer or an industrial display screen.

[0013] The MCU control device is an STM32 main control module.

[0014] The beneficial effects of the present utility model are as follows:

[0015] (1) The automatic control device of the present utility model is directly installed at the mouth of the settling tank, realizing the on-line real-time detection of the crude oil liquid level.

[0016] (2) The automatic control device of the present utility model starts to detect automatically after the device runs. By controlling the rotation speed and time of the explosion-proof motor, accurate collection of the crude oil in the settling tank is realized, and data is transmitted to the data terminal in real time.

[0017] (3) Based on the needs of digital oilfield construction and automated management, the MCU control device of the automatic control device of the present utility model is configured with a wireless transmission module, which can effectively transmit the information collected from numerous wellheads in the oilfield to the oilfield ground control station for storage and analysis at regular intervals, accelerating the collection and analysis process of the oilfield water cut data by the oilfield managers. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the connection structure between multiple modules of the automatic control device of the present utility model;

[0019] Figure 2 It is a schematic diagram of the overall structure of the automatic control device of the present utility model.

[0020] In the figure, 1. metal ball; 2. oil storage tank; 3. rope; 4. pulley; 5. tension sensor; 6. switching power supply; 7. motor driver; 8. fixed bracket; 9. explosion-proof motor; 10. wire winding disc; 11. MCU control device; 12. pulley encoder; 13. communication device; 14. ground control station; 15. measuring device; 16. actuator. Detailed implementation

[0021] The present utility model will be described in detail below in conjunction with the accompanying drawings and the detailed implementation.

[0022] An automatic control device for measuring the liquid level of a gathering and transportation settling tank, as Figure 1 shown, includes a measurement platform, on which a switching power supply 6, a measuring device 15 and an actuator 16 are respectively provided. The switching power supply 6 supplies power to the measuring device 15 and the actuator 16. It also includes an oil storage tank 2, in which a metal ball 1 floats. One end of a rope 3 is connected to the metal ball 1, and the other end of the rope 3 passes through the measuring device 15 and is connected to the actuator 16;

[0023] The measuring device 15 is also connected to a transmitter through a signal line, and the transmitter is connected to an MCU control device 11 through a signal line. The MCU control device 11 is an STM32 main control module. The output end of the MCU control device 11 is signal-connected to the actuator 16 to control the movement of the metal ball 1. The output end of the MCU control device 11 is also connected to a communication device 13 in wired and wireless ways. The communication device 13 is connected to a ground control station 14 in wired and wireless ways. The ground control station 14 is an industrial computer or an industrial display screen. Among them, the communication device 13 includes a wired transmission method RS-485 and a wireless transmission method LoRaWAN. The wired transmission method RS-485 and the wireless transmission method LoRaWAN are bidirectionally redundant and synchronously transmit information between the MCU control device 11 and the ground control station 14;

[0024] During use, the MCU control device 11 processes the data collected by the measuring device 15 and then controls the actuator 16, and transmits information to the ground control station 14 through the communication device 13. The communication device 13 uses wired transmission and wireless transmission methods for two-way communication between the MCU control device 11 and the ground control station 14; the MCU control device 11 drives the explosion-proof motor 9 to move through the motor driver 7; the entire device is powered by the switching power supply switch 6.

[0025] As Figure 2As shown in the figure, the measuring device 15 includes a tension sensor 5, which is arranged on the measuring platform. A pulley 4 is connected below the tension sensor 5. It also includes a fixed bracket 8 arranged on the measuring platform. A pulley encoder 12 is connected to the lower end of the fixed bracket 8. The rope 3 passes through the pulley 4, the tension sensor 5, the pulley encoder 12 in sequence and is connected to the actuator 16. The tension sensor 5 and the pulley encoder 12 are also respectively connected to the MCU control device 11 through signal lines.

[0026] The actuator 16 includes an explosion-proof motor 9 and a winding disc 10. Both the explosion-proof motor 9 and the winding disc 10 are installed on the measuring platform. The explosion-proof motor 9 and the winding disc 10 are coaxially arranged to minimize power loss. The rope 3 is wound around the winding disc 10 after passing through the pulley encoder 12. It also includes a motor driver 7 installed on the measuring platform. The motor driver 7 transmits the control signal of the MCU control device 11 to the explosion-proof motor 9 to control its movement.

[0027] The working process when measuring the liquid level is as follows:

[0028] The measuring device 15 of the liquid level detection automatic control system transmits the data collected by the tension sensor 5 to the MCU control device 11 through a transmitter. At the same time, while the pulley encoder 12 is rotating, it can obtain the length information of the movement of the rope 3, and this length information is the height that the metal ball 1 rises and falls.

[0029] The MCU control device 11 integrates and calculates the sensor data obtained by the measuring device 15 to respectively obtain the liquid level height information.

[0030] The height information is transmitted to the ground control station 14 in a wired / wireless communication manner through the communication device 13 to realize the real-time monitoring of the tank state.

[0031] The communication device 13 is based on a full-duplex working mode to realize the real-time control of the ground control station 14 over the tank measuring device. And the ground control station 14 is equipped with the upper control software designed by us, which can realize functions such as storing data, generating daily reports, warning and alarming.

[0032] An automatic control device for measuring the liquid level of an oil gathering and settling tank provided by an embodiment of the present utility model is based on the physical characteristics that heavy oil and water have different viscosities and buoyancies, uses a high-precision tension sensor to realize a fast liquid level measurement method applicable to various types of tanks, and designs a two-way redundant check system to realize accurate liquid level measurement.

[0033] Embodiment 1

[0034] An automatic control device for measuring the liquid level of an oil gathering and settling tank, as Figure 1As shown in the figure, it includes a measurement platform, on which a switching power supply 6, a measuring device 15 and an actuator 16 are respectively arranged. The switching power supply 6 supplies power to the measuring device 15 and the actuator 16. It also includes an oil storage tank 2, in which a metal ball 1 floats. One end of a rope 3 is connected to the metal ball 1, and the other end of the rope 3 passes through the measuring device 15 and is connected to the actuator 16;

[0035] The measuring device 15 is also connected to a transmitter through a signal line, and the transmitter is connected to an MCU control device 11 through a signal line. The MCU control device 11 is an STM32 main control module. The output end of the MCU control device 11 is connected to the actuator 16 through a signal to control the movement of the metal ball 1. The output end of the MCU control device 11 is also connected to a communication device 13 in wired and wireless ways. The communication device 13 is connected to a ground control station 14 in wired and wireless ways. The ground control station 14 is an industrial computer or an industrial display screen. Among them, the communication device 13 includes a wired transmission method RS-485 and a wireless transmission method LoRaWAN. The wired transmission method RS-485 and the wireless transmission method LoRaWAN are bidirectionally redundant and synchronously transmit the information between the MCU control device 11 and the ground control station 14;

[0036] During use, the MCU control device 11 processes the data collected by the measuring device 15 and then controls the actuator 16, and transmits the information to the ground control station 14 through the communication device 13. The communication device 13 uses wired transmission and wireless transmission methods to conduct two-way communication between the MCU control device 11 and the ground control station 14; the MCU control device 11 drives the explosion-proof motor 9 to move through the motor driver 7; the entire device is powered by the switching power supply switch 6.

[0037] Embodiment 2

[0038] An automatic control device for measuring the liquid level of an oil gathering and settling tank, such as Figure 1 As shown in the figure, it includes a measurement platform, on which a switching power supply 6, a measuring device 15 and an actuator 16 are respectively arranged. The switching power supply 6 supplies power to the measuring device 15 and the actuator 16. It also includes an oil storage tank 2, in which a metal ball 1 floats. One end of a rope 3 is connected to the metal ball 1, and the other end of the rope 3 passes through the measuring device 15 and is connected to the actuator 16;

[0039] The measuring device 15 is also connected with a transmitter through a signal line. The transmitter is connected with an MCU control device 11 through a signal line. The output end of the MCU control device 11 is signal-connected with an actuator 16, thereby controlling the movement of the metal ball 1. The output end of the MCU control device 11 is also connected with a communication device 13 in a wired and wireless manner. The communication device 13 is connected with a ground control station 14 in a wired and wireless manner. The ground control station 14 is an industrial computer or an industrial display screen;

[0040] As Figure 2 shown, the measuring device 15 includes a tension sensor 5. The tension sensor 5 is arranged on the measuring platform. A pulley 4 is connected below the tension sensor 5. The measuring device 15 further includes a fixed bracket 8 arranged on the measuring platform. A pulley encoder 12 is connected to the lower end of the fixed bracket 8. A rope 3 sequentially passes through the pulley 4, the tension sensor 5, the pulley encoder 12 and is connected with the actuator 16. The tension sensor 5 and the pulley encoder 12 are also respectively connected with the MCU control device 11 through signal lines.

[0041] The actuator 16 includes an explosion-proof motor 9 and a winding disc 10. The explosion-proof motor 9 and the winding disc 10 are both installed on the measuring platform. The explosion-proof motor 9 and the winding disc 10 are coaxially arranged to minimize power loss. The rope 3 passes through the pulley encoder 12 and then winds around the winding disc 10. The actuator 16 further includes a motor driver 7 installed on the measuring platform. The motor driver 7 transmits the control signal of the MCU control device 11 to the explosion-proof motor 9 to control its movement.

[0042] Embodiment 3

[0043] When the automatic control device of the present application is used for liquid level measurement, the working process is as follows:

[0044] The measuring device 15 of the liquid level detection automatic control system transmits the data collected by the tension sensor 5 to the MCU control device 11 through the transmitter; at the same time, while the pulley encoder 12 is rotating, it can obtain the length information of the movement of the rope 3, and this length information is the height of the rise and fall of the metal ball 1;

[0045] The MCU control device 11 integrates and calculates the sensor data obtained by the measuring device 15 to respectively obtain the liquid level height information;

[0046] The height information is transmitted to the ground control station 14 in a wired / wireless communication manner through the communication device 13 to realize real-time monitoring of the state in the tank;

[0047] The communication device 13 is based on a full-duplex working mode to realize real-time control of the tank measuring device by the ground control station 14. And the ground control station 14 is equipped with the upper control software designed by us, which can realize functions such as storing data, generating daily reports, early warning and alarm.

Claims

1. An automatic control device for measuring the liquid level of a gathering and settling tank, characterized in that: The invention comprises a measuring platform, on which a switch power supply (6), a measuring device (15) and an actuator (16) are respectively provided, and an oil storage tank (2), in which a metal ball (1) floats, the metal ball (1) is connected to one end of a rope (3), and the other end of the rope (3) passes through the measuring device (15) and is connected to the actuator (16); The measuring device (15) is also connected to a transmitter via a signal line, the transmitter is connected to an MCU control device (11) via a signal line, the output end of the MCU control device (11) is connected to an actuator (16) via a signal line, the output end of the MCU control device (11) is also connected to a communication device (13) via a wired and wireless method, and the communication device (13) is connected to a ground control station (14) via a wired and wireless method; the entire device is powered by a switching power supply (6).

2. The automatic control device for measuring the liquid level of a gathering and transporting settling tank according to claim 1 is characterized in that: The measuring device comprises a tension sensor (5), wherein the tension sensor (5) is arranged on a measuring platform, a pulley (4) is connected below the tension sensor (5), and a fixed bracket (8) is arranged on the measuring platform, a pulley encoder (12) is connected at the lower end of the fixed bracket (8), the rope (3) passes through the pulley (4), the tension sensor (5), the pulley encoder (12) in sequence, and is connected to an actuator (16), and the tension sensor (5) and the pulley encoder (12) are also connected to an MCU control device (11) via signal lines.

3. The automatic control device for measuring the liquid level of a gathering and transporting settling tank according to claim 2 is characterized in that: The actuator (16) comprises an explosion-proof motor (9), a motor driver (7) and a winding drum (10), wherein the explosion-proof motor (9) and the winding drum (10) are both mounted on a measuring platform, the explosion-proof motor (9) and the winding drum (10) are coaxially arranged, the rope (3) passes through a pulley encoder (12) and is then wound around the winding drum (10), and further comprises a motor driver (7) mounted on the measuring platform, wherein the motor driver (7) transmits a control signal of an MCU control device (11) to the explosion-proof motor (9) to control its movement.

4. The automatic control device for measuring the liquid level of a gathering and transporting settling tank according to claim 1 is characterized in that: The communication device (13) includes a wired transmission mode RS-485 and a wireless transmission mode LoRaWAN, and the wired transmission mode RS-485 and the wireless transmission mode LoRaWAN are bidirectionally redundant.

5. The automatic control device for measuring the liquid level of a gathering and transporting settling tank according to claim 1 is characterized in that: The ground control station (14) is an industrial computer or an industrial display screen.

6. The automatic control device for measuring the liquid level of a gathering and transporting settling tank according to claim 1 is characterized in that: The MCU control device (11) is an STM32 main control module.

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