Oil field internet-of-things oil extraction blending transportation control device

Abstract

The utility model discloses an oil field internet-of-things oil extraction blending transportation control device, and belongs to the technical field of oil fields. The oil field internet-of-things oil extraction blending and transportation control device is characterized by comprising N incoming oil and water blending loops, and each incoming oil and water blending loop comprises an oil incoming pipeline and a water blending pipeline; one end of the oil pipeline is connected with the producing well; hot water is fed into one end of the water mixing pipeline, and the other end of the water mixing pipeline is connected to a mixing and conveying opening of the oil producing well, and the hot water is conveyed back to the oil producing well to be mixed and collected; a block valve, a coming oil pressure change sensor, a temperature change sensor and a check valve are sequentially arranged on the coming oil pipeline in the direction from the oil producing well to the oil-water separation skid; a flow control device and a watering pressure change sensor are sequentially arranged on the watering pipeline in the direction from one end to the producing well; and the watering pressure change sensor, the temperature change sensor and the incoming oil pressure change sensor are connected with a flow control device in the incoming oil watering loop.

Description

Technical Field

[0001] The utility model relates to the technical field of oil fields, in particular to an oil field Internet of Things oil production and blending control device. Background Art

[0002] In order to prevent the freezing of the oil collection pipeline and ensure that the valve group in the oil field water mixing network can safely transport crude oil to the next-level station, the oil field IoT oil production system needs to increase the temperature of the oil-water mixture transported in the pipeline. At present, the widely used method is to use a valve welded on the side wall of the oil pipeline and connected to the high-temperature water pipeline to manually mix water in the valve group room. When mixing water, the opening amount of the valve is manually adjusted as needed. However, due to the change in climate temperature difference, manual adjustment intervention is required frequently, and there is still a large fluctuation in the output of the oil well, resulting in more and less water mixing, which causes energy waste when it is more, and causes pipeline freezing when it is less. In addition, this adjustment method is not only slow to respond, but also imposes a huge burden on the operator. And for the sake of production safety, the operator generally keeps the valve opening at the maximum and does not adjust it easily, so that the amount of water mixing during crude oil transportation is always too large, and the temperature of the crude oil arriving at the joint station is too high. In short, this method of transporting crude oil mixed with water reflects the defects of low work efficiency, high energy consumption, difficult management and difficult maintenance at the crude oil transportation site in the oil field, which has caused inevitable economic losses and safety hazards. Such crude oil mixed with water transportation technology has been difficult to meet the requirements of on-site production. Utility Model Content

[0003] The utility model aims to provide an oilfield Internet of Things oil production and blending control device, which can realize multi-parameter, high-precision and high-efficiency control under the premise of ensuring normal transportation of crude oil.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The oilfield Internet of Things oil production and blending control device has N oil and water blending circuits, each of which includes an oil pipeline and a water blending pipeline; one end of the oil pipeline is connected to the oil production well; the other end of the oil pipeline is connected to the oil-water separation skid, the water outlet of the oil-water separation skid is connected to the water inlet of the heating device through a pipeline, and the water outlet of the heating device is connected to one end of the water blending pipeline; the separated water is respectively sent to one end of the water blending pipeline through the heating device, and the other end of the water blending pipeline is respectively connected to the blending port of the oil production well, and sent back to the oil well for water blending collection;

[0006] On the incoming oil pipeline, from the oil production well to the oil-water separation skid, a shutoff valve, an incoming oil pressure sensor, a temperature sensor, and a check valve are arranged in sequence;

[0007] On the water injection pipeline, flow control devices and water injection pressure sensors are provided in sequence from the heating device to the oil production well;

[0008] The water mixing pressure variable sensor, temperature variable sensor and oil pressure variable sensor in each oil-water mixing circuit are connected to the flow control device in the oil-water mixing circuit. The water mixing pressure variable sensor, temperature variable sensor and oil pressure variable sensor send the collected signals to the flow control device, and the flow control device outputs instructions to perform flow regulation.

[0009] The flow control device in each oil-water mixing circuit is also connected to the central control room to send the working data to the central control room for storage and display.

[0010] The flow control device is an intelligent electric regulating valve, which simultaneously receives data signals from the central control room and data signals from the water-injected pressure sensor, the oil pressure sensor, and the temperature sensor, and performs flow control and adjustment on the intelligent electric regulating valve after comparison.

[0011] As a preferred technical solution, the intelligent electric regulating valve includes a control circuit and an electric valve; the electric valve includes a motor and a valve body, the motor is connected to the valve body, and the opening of the valve body is controlled by controlling the rotation of the motor; the control circuit is connected to the motor and issues instructions to control the operation of the motor;

[0012] The control circuit includes a main control chip, a power management circuit, and a motor drive circuit; the input end of the power management circuit is connected to an external power supply, and the output end of the power management circuit is connected to the main control chip; the motor drive circuit is connected to the motor power line, the external power supply, and the main control chip;

[0013] The main control chip is connected to a temperature variable sensor, an oil pressure variable sensor, and a water mixing pressure variable sensor; the main control chip controls the motor after comparing the data signals collected from the water mixing pressure variable sensor, the oil pressure variable sensor, and the temperature variable sensor.

[0014] As an optimal technical solution, the control circuit also includes a generator power generation circuit and a power-off detection circuit; the power-off detection circuit is connected to an external power supply to detect whether an external power supply exists; the generator power generation circuit is connected to a motor power line; the motor shaft is connected to a handwheel and a valve body, and the handwheel drives the motor shaft to rotate.

[0015] As a preferred technical solution, the generator power generation circuit includes a transformer L4, the U pin, V pin, and W pin of the transformer L4 are respectively connected to the power line of the motor, the U_hign pin of the transformer L4 is connected to the cathode of the diode D10 and the anode of the diode D9; the V_hign pin of the transformer L4 is connected to the cathode of the diode D12 and the anode of the diode D11; the W_hign pin of the transformer L4 is connected to the cathode of the diode D14 and the anode of the diode D13; the The positive electrode, the positive electrode of the diode D12, and the positive electrode of the diode D14 are connected and grounded; the negative electrode of the diode D9, the negative electrode of the diode D11, and the negative electrode of the diode D13 are connected and connected to one end of the resistor R7, one end of the resistor R9, the positive electrode of the polarity capacitor C22, one end of the capacitor C26, the vin pin of the three-terminal regulator U7, one end of the resistor R10, one end of the resistor R12, one end of the resistor R13, the positive electrode of the polarity capacitor C23, one end of the capacitor C27, and the 1st pin of the chip U10;

[0016] The other end of the resistor R7 is connected to the cathode of the voltage regulator diode D18, the anode of the voltage regulator diode D18 is connected to one end of the resistor R8 and the base of the transistor Q2, the other end of the resistor R8 is connected to the emitter of the transistor Q2, the emitter of the transistor Q3 and grounded; the collector of the transistor Q2 is connected to the base of the transistor Q3 and the other end of the resistor R9; the collector of the transistor Q3 is connected to the cathode of the polarity capacitor C22, the other end of the capacitor C26, the GND pin of the three-terminal voltage regulator U7, one end of the capacitor C30 and grounded; the Vout pin of the three-terminal voltage regulator U7 is connected to the other end of the capacitor C30, the anode of the diode D307, and the cathode of the diode D15 to output a 5V voltage to the main control chip;

[0017] The other end of the resistor R10 is connected to the cathode of the voltage zener diode D19, the anode of the voltage zener diode D19 is connected to one end of the resistor R11 and the base of the transistor Q4, the emitter of the transistor Q4 is connected to the emitter of the transistor Q5 and the emitter of the transistor Q6 and is grounded; the collector of the transistor Q4 is connected to the base of the transistor Q5 and the other end of the resistor R12, the collector of the transistor Q5 is connected to the base of the transistor Q6 and the other end of the resistor R13; the collector of the transistor Q6 is connected to the cathode of the polarity capacitor C23 and the other end of the capacitor C27 and is grounded;

[0018] Pin 2 of chip U10 is connected to one end of inductor L3, one end of resistor R24, and one end of capacitor C20; the other end of inductor L3 is connected to the positive electrode of diode D16, one end of resistor R25, the positive electrode of polar capacitor C43, and one end of resistor R26; the negative electrode of diode D16 outputs 5V voltage to power the main control chip;

[0019] Pin 3 of chip U10 is connected to the other end of capacitor C20; pin 4 of chip U10 is connected to the other end of resistor R24 ​​and the other end of resistor R25; pin 5 of chip U10 is connected to the negative electrode of polarity capacitor C42, the negative electrode of polarity battery C43, the other end of resistor R26 and grounded; pin 6 of chip U10 is connected to the positive electrode of polarity capacitor C42 and one end of inductor L2; the other end of inductor L2 is connected to pin 7 of chip U10.

[0020] As a preferred technical solution, the power-off detection circuit includes a resistor R5, one end of the resistor R5 is connected to an external power supply, the other end of the resistor R5 is connected to the cathode of the Zener diode D17, the anode of the Zener diode D17 is connected to one end of the resistor R6 and the base of the transistor Q15, the emitter of the transistor Q15 is connected to the other end of the resistor R6 and grounded; the collector of the transistor Q15 is connected to pin 54 of the main control chip U6, and the power-off signal is sent to the main control chip.

[0021] As a preferred technical solution, the motor driving motor is connected to the main control chip U6 through the MOS tube driving chip U1, and the motor driving circuit includes a resistor R30, one end of the resistor R30 is connected to the cathode of the diode D4 and the 19th pin of the MOS driving chip U1; the other end of the resistor R30 is connected to the anode of the diode D4, one end of the capacitor C4, and the gate of the MOS tube Q9; the drain of the MOS tube Q9 is connected to the drain of the MOS tube Q12 and connected to the 24V external voltage; the source of the MOS tube Q9 is connected to the other end of the capacitor C4, the drain of the MOS tube Q8, and the U pin of the motor power line;

[0022] One end of the resistor R33 is connected to the 11th pin of the MOS tube driving chip U1, the other end of the resistor R33 is connected to one end of the capacitor C5 and the gate of the MOS tube Q8, the source of the MOS tube Q8 is connected to the other end of the capacitor C5, one end of the capacitor C7, the source of the MOS tube Q10, one end of the resistor R36, one end of the resistor R37, one end of the resistor R38, one end of the resistor R39, one end of the capacitor C9, one end of the resistor R17, and the source of the MOS tube Q13;

[0023] The gate of the MOS tube Q11 is connected to one end of the resistor R31, the positive electrode of the diode D5, and one end of the capacitor C6; the other end of the resistor R31 is connected to the negative electrode of the diode D5 and the 16th pin of the MOS tube driver chip U1; the source of the MOS tube Q11 is connected to the other end of the capacitor C6, the drain of the MOS tube Q10, and the V pin of the motor power line;

[0024] The gate of the MOS tube Q12 is connected to one end of the resistor R32, the positive electrode of the diode D6, and one end of the capacitor C8; the other end of the resistor R32 is connected to the negative electrode of the diode D6 and the 13th pin of the MOS tube driver chip U1; the source of the MOS tube Q12 is connected to the other end of the capacitor C8, the drain of the MOS tube Q13, and the W pin of the motor power line;

[0025] The gate of the MOS tube Q10 is connected to the other end of the capacitor C7 and one end of the resistor R34, and the other end of the resistor R34 is connected to the 10th pin of the MOS tube driving chip U1;

[0026] The gate of the MOS tube Q13 is connected to the other end of the capacitor C9 and one end of the resistor R35, and the other end of the resistor R35 is connected to the 9th pin of the MOS tube driving chip U1;

[0027] The other end of resistor R36 is connected to the other end of resistor R37, the other end of resistor R38, the other end of resistor R39, one end of capacitor C40, the emitter of transistor Q14, one end of capacitor C41 and grounded; the other end of capacitor C40 is connected to the other end of resistor R17 and the base of transistor Q14; the collector of transistor Q14 is connected to one end of capacitor C41, one end of resistor R40 and pin 56 of main control chip U6; the other end of resistor R40 is connected to 3.3V voltage.

[0028] As an optimal technical solution, the other end of the oil pipeline is connected to the oil-water separation skid, the water outlet of the oil-water separation skid is connected to the water inlet of the heating device through a pipeline, and the water outlet of the heating device is connected to one end of the water mixing pipeline.

[0029] As a preferred technical solution, its control method includes a coarse adjustment stage control method and a precise compensation adjustment stage control method;

[0030] The control method of the coarse adjustment stage is as follows:

[0031] The central control room outputs control instructions to the intelligent electric regulating valve, and the control instructions include target temperature value and target pressure value;

[0032] The intelligent electric regulating valve collects the signal data collected by the water mixing pressure variable sensor, the oil pressure variable sensor and the temperature variable sensor in real time, and controls the actual medium temperature and pressure in the oil pipeline to be plus or minus 15% of the specified signal in the central control room according to the control instructions in the rough adjustment stage;

[0033] The control method of the precise compensation adjustment stage is as follows:

[0034] The intelligent electric regulating valve calculates the blending flow rate that needs to be compensated relative to the target temperature value and the target pressure value within the minute and performs flow regulation.

[0035] Compared with the prior art, the utility model has the following beneficial effects:

[0036] In the utility model, by providing an intelligent electric regulating valve, the goal is to adjust the valve opening in real time according to the signal given by the central control room and the signal fed back by the oil pressure sensor, the water pressure sensor, and the temperature sensor, so as to achieve constant temperature and pressure of the medium in the oil well. The intelligent electric regulating valve itself realizes control and data comparison, with faster response speed and high-efficiency control.

[0037] When the utility model is in use, the central control room issues the required temperature and pressure instructions of the medium in the oil pipeline of the oil well to the intelligent electric regulating valve, and the intelligent electric regulating valve starts the participating (accompanying) operation after opening according to the instruction requirements, and the pressure variable sensor and the temperature variable sensor in the oil pipeline of the oil well provide corresponding feedback signals and transmit them to the central control room and the intelligent electric regulating valve, and the intelligent electric regulating valve automatically performs the opening and closing adjustment action after comparing the signal with the instruction signal of the central control room until the two signals are consistent, thereby achieving the goal of constant temperature and pressure control. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the utility model;

[0039] Figure 2 Main control chip and its basic circuit;

[0040] Figure 3 It is the MOS tube driver chip and its basic circuit;

[0041] Figure 4 This is the schematic diagram of the motor drive circuit;

[0042] Figure 5 This is the schematic diagram of the power management circuit;

[0043] Figure 6 This is the schematic diagram of the generator power generation circuit;

[0044] Figure 7 This is the circuit schematic diagram of the communication module;

[0045] Figure 8 This is the schematic diagram of the acquisition circuit.

[0046] Among them, the figure numbers are as follows: 1-incoming oil pipeline, 2-water mixing pipeline, 3-shutoff valve, 4-incoming oil pressure sensor, 5-temperature sensor, 6-check valve, 7-intelligent electric regulating valve, 8-water mixing pressure sensor. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0048] On the contrary, the present application covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present application as defined by the claims. Further, in order to make the public have a better understanding of the present application, some specific details are described in detail in the detailed description of the present application below. Those skilled in the art can fully understand the present application without the description of these details.

[0049] Example 1

[0050] The oilfield Internet of Things oil production and blending control device includes N oil pipelines 1 and N water blending pipelines 2; one end of the N oil pipelines 1 is connected to N oil production wells respectively; the other end of the N oil pipelines 1 is connected to the oil-water separation skid, and the oil well production fluid is sent to the oil-water separation skid for oil-water separation, and the oil outlet of the oil-water separation skid is connected to the metering skid through a pipeline, and the separated oil is discharged from the station through the metering skid for subsequent processes; the water outlet of the oil-water separation skid is connected to the water inlet of the heating device through a pipeline, and the water outlet of the heating device is connected to one end of the N water blending pipelines 2. The separated water is sent to one end of the N water blending pipelines 2 through the heating device, and the other end of the N water blending pipelines 2 is connected to the blending port of the N oil production wells respectively, and sent back to the oil wells for water blending collection.

[0051] It is worth emphasizing that on the N incoming oil pipelines 1, a shutoff valve 3, an incoming oil pressure sensor 4, a temperature sensor 5, and a check valve 6 are sequentially provided in the direction from the oil production well to the oil-water separation skid.

[0052] On the N water injection pipelines 2, flow control devices and water injection pressure sensors 8 are provided in sequence in the direction from the heating device to the oil production well.

[0053] It is worth mentioning that 1 oil pipeline 1, 1 water mixing pipeline 2 and the equipment on the pipeline constitute an integral 1 oil mixing water circuit; by analogy, N oil pipelines 1, N water mixing pipelines 2 and the equipment on the pipeline constitute an integral N oil mixing water circuit;

[0054] The water mixing pressure variable sensor 8, temperature variable sensor 5, and oil pressure variable sensor 4 in each oil-water mixing circuit are connected to the flow control device in the oil-water mixing circuit. The water mixing pressure variable sensor 8, temperature variable sensor 5, and oil pressure variable sensor 4 send the collected signals to the flow control device, and the flow control device outputs instructions to perform flow regulation.

[0055] The flow control device in each oil-water mixing circuit is also connected to the central control room to send the working data to the central control room for storage and display.

[0056] The flow control device is an intelligent electric regulating valve 7. The electric actuator of the intelligent electric regulating valve 7 has a built-in PCL control circuit chip group, which simultaneously receives data signals from the central control room and data signals from the water-mixed pressure sensor 8, the oil pressure sensor 4, and the temperature sensor 5, and performs flow control and adjustment on the intelligent electric regulating valve 7 after comparison.

[0057] It is worth emphasizing that the temperature sensor 5 is a temperature sensor with a temperature display; the pressure sensor is a pressure sensor with a pressure display.

[0058] It is worth emphasizing that the cut-off valve 3 is an accessible high-performance flat gate valve; the check valve 6 is an axial flow check valve 6 with stable performance. The cut-off valve 3 is used to cut off the medium in the oil pipeline 1 of the oil well to facilitate pipeline maintenance; the check valve 6 is used to prevent the medium in the oil pipeline 1 of the oil well from flowing back and causing system damage.

[0059] In this embodiment, when the oilfield Internet of Things oil production and blending control device is in use, the temperature and pressure instructions issued by the central control room are sent to the built-in PCL control circuit chip group of the intelligent electric control valve 7. After comparing with the collected data signals of the on-site water blending pressure sensor 8, the incoming oil pressure sensor 4, and the temperature sensor 5, the flow control and adjustment of the intelligent electric control valve 7 is performed until the constant and stable medium temperature and pressure requirements in the incoming oil pipeline 1 are achieved.

[0060] At the same time, a shut-off valve 3 is installed at the front end of the oil pipeline 1 connected to the oil production well to facilitate the shutdown, maintenance and other operations of the local pipeline. A check valve 6 is installed at the tail end of the oil pipeline 1 to prevent the medium from flowing back.

[0061] After being controlled by the intelligent blending control device, the temperature and pressure of the medium in the oil pipeline 1 can be controlled to be plus or minus 7%. Every 15 minutes is taken as an adjustment cycle. When the total temperature and pressure change range within 15 minutes is less than the 5% range specified by the central control room, the blending medium flow rate can be adjusted without taking any action. When the total temperature and pressure change range within 15 minutes is greater than or equal to the 5% range specified by the central control room, the intelligent blending control device performs appropriate automatic operation to control the temperature and pressure of the medium in the oil pipeline 1 to be plus or minus 7%.

[0062] This embodiment provides a control method for an oilfield IoT oil production and blending control device, including a rough adjustment stage and a post-precision compensation adjustment stage;

[0063] Among them, the control method of the coarse adjustment stage is as follows:

[0064] The central control room outputs control instructions to the intelligent electric regulating valve 7, and the control instructions include a target temperature value and a target pressure value;

[0065] The intelligent electric regulating valve 7 collects the signal data collected by the water mixing pressure sensor 8, the oil pressure sensor 4 and the temperature sensor 5 in real time, and controls the actual medium temperature and pressure in the oil pipeline 1 to be plus or minus 15% of the specified signal in the central control room according to the control instructions in the rough adjustment stage;

[0066] Among them, the control method of the precise compensation adjustment stage is as follows:

[0067] The intelligent electric regulating valve 7 calculates the blending flow rate that needs to be compensated relative to the target temperature value and the target pressure value within the minute, and performs flow regulation.

[0068] The above method can be used to mix and inject the medium into the wellhead pipeline of the oil production well more evenly, and ensure that the medium temperature and pressure requirements in the oil pipeline 1 are constant and stable.

[0069] Furthermore, the intelligent electric regulating valve 7 can adopt an artificial intelligence algorithm to estimate the next adjustment value by continuously learning historical adjustment data, quickly and accurately determine the valve opening of the intelligent electric regulating valve 7, and optimize the adjustment control.

[0070] It is worth emphasizing that the intelligent control device for blending and transmission needs to be connected to the Internet of Things for two-way data transmission. The central control room can remotely set the target values ​​of medium temperature and pressure in the oil pipeline 1 for each intelligent control device for blending and transmission. At the same time, all intelligent control devices for blending and transmission need to transmit their actual flow data values ​​back to the central control room in real time.

[0071] Example 2

[0072] In this embodiment, a specific circuit structure of the intelligent electric regulating valve 7 is provided.

[0073] The intelligent electric regulating valve 7 comprises a control circuit and an electric valve. The electric valve comprises a motor and a valve body, wherein the motor is connected to the valve body, and the opening of the valve body is controlled by controlling the rotation of the motor.

[0074] It is worth emphasizing that one end of the motor's output shaft is connected to the valve body to control the opening of the valve body, and the other end of the motor's output shaft is connected to the handwheel, so that the motor can supply power to control the rotation of the output shaft, or the handwheel can control the rotation of the output shaft.

[0075] The control circuit includes the main control chip and its basic circuit, the motor drive circuit, the generator power generation circuit, and the power management circuit.

[0076] The power management circuit is connected to the external power supply, the main control chip and its basic circuit, and the motor drive circuit. The external power supply is stepped down and stabilized by the power management circuit to supply power to the entire electric control valve. When there is an external power supply, the motor is powered and acts as a motor to execute the command to control the opening and closing of the valve body.

[0077] The motor is connected to the input end of the generator power generation circuit, and the output end of the generator power generation circuit is connected to the main control chip.

[0078] When the external power supply does not exist (i.e. when the power is off), the handwheel is manually turned. At this time, the motor becomes a generator and outputs voltage to power the main control chip, which can also drive the opening and closing of the valve.

[0079] Through the setting, the motor generates power to the main control chip when the power is off, so that when the power is off, the main control chip can still work and can also display (view flow), record position, etc.;

[0080] In this embodiment, the power failure detection circuit is used to detect whether the external power supply is powered. If the external power supply is not powered, a signal is sent to the main control chip, and the main control chip issues an alarm to notify the staff. The staff turns the crank, the crank is connected to the motor, and the motor is connected to the generator circuit, so that the motor generates electricity and supplies power to the intelligent regulating valve for a short time, thereby recording data.

[0081] like Figure 2 The main control chip U6 and its basic circuit are shown in the figure. The model of the main control chip U6 is STM series, preferably STM 32F103RCT6. The main control chip U6 is connected with a water mixing pressure sensor, a temperature sensor, an oil pressure sensor, and an LCD display screen to display the actual flow detected by the sensor.

[0082] The main control chip U6 is connected to the motor drive circuit through the MOS driver chip U1; the model of the MOS driver chip U1 is EG2113. Figure 3 As shown, the MOS driver chip U1 and its basic circuit.

[0083] Motor drive circuit Figure 4 As shown, one end of the resistor R30 is connected to the cathode of the diode D4 and the 19th pin of the MOS driver chip U1; the other end of the resistor R30 is connected to the anode of the diode D4, one end of the capacitor C4, and the gate of the MOS tube Q9; the drain of the MOS tube Q9 is connected to the drain of the MOS tube Q12 and connected to the 24V external voltage; the source of the MOS tube Q9 is connected to the other end of the capacitor C4, the drain of the MOS tube Q8, and the U pin of the motor power line;

[0084] One end of the resistor R33 is connected to the 11th pin of the MOS tube driving chip U1, the other end of the resistor R33 is connected to one end of the capacitor C5 and the gate of the MOS tube Q8, the source of the MOS tube Q8 is connected to the other end of the capacitor C5, one end of the capacitor C7, the source of the MOS tube Q10, one end of the resistor R36, one end of the resistor R37, one end of the resistor R38, one end of the resistor R39, one end of the capacitor C9, one end of the resistor R17, and the source of the MOS tube Q13;

[0085] The gate of the MOS tube Q11 is connected to one end of the resistor R31, the positive electrode of the diode D5, and one end of the capacitor C6; the other end of the resistor R31 is connected to the negative electrode of the diode D5 and the 16th pin of the MOS tube driver chip U1; the source of the MOS tube Q11 is connected to the other end of the capacitor C6, the drain of the MOS tube Q10, and the V pin of the motor power line;

[0086] The gate of the MOS tube Q12 is connected to one end of the resistor R32, the positive electrode of the diode D6, and one end of the capacitor C8; the other end of the resistor R32 is connected to the negative electrode of the diode D6 and the 13th pin of the MOS tube driver chip U1; the source of the MOS tube Q12 is connected to the other end of the capacitor C8, the drain of the MOS tube Q13, and the W pin of the motor power line;

[0087] The gate of the MOS tube Q10 is connected to the other end of the capacitor C7 and one end of the resistor R34, and the other end of the resistor R34 is connected to the 10th pin of the MOS tube driving chip U1;

[0088] The gate of the MOS tube Q13 is connected to the other end of the capacitor C9 and one end of the resistor R35, and the other end of the resistor R35 is connected to the 9th pin of the MOS tube driving chip U1;

[0089] The other end of resistor R36 is connected to the other end of resistor R37, the other end of resistor R38, the other end of resistor R39, one end of capacitor C40, the emitter of transistor Q14, one end of capacitor C41 and grounded; the other end of capacitor C40 is connected to the other end of resistor R17 and the base of transistor Q14; the collector of transistor Q14 is connected to one end of capacitor C41, one end of resistor R40 and pin 56 of main control chip U6; the other end of resistor R40 is connected to 3.3V voltage.

[0090] Power management circuits such as Figure 5 As shown, the power management circuit includes a three-terminal regulator U3, a DC-DC buck chip U2, a voltage regulator U4, and a reference voltage chip U5;

[0091] The Vin pin of the three-terminal voltage regulator U3 is connected to the external power supply input 24V voltage; the Vout pin of the three-terminal voltage regulator U3 outputs 15V voltage for linear voltage reduction;

[0092] The DC-DC step-down chip U2 is connected to a three-terminal voltage regulator to step down the 15V voltage to 5V output. Its model is MP2451;

[0093] The voltage regulator U4 is connected to the DC-DC step-down chip U2 and the main control chip, and steps down the 5V voltage to 3.3V output voltage to supply power to the main control chip;

[0094] The reference voltage chip U5 is connected to the DC-DC step-down chip U2 and the main control chip to step down the 5V voltage to 3.3V output voltage to supply power to components that require precise voltage;

[0095] In this embodiment, a power-off detection circuit is also included, such as Figure 5 As shown, the power-off detection circuit includes a resistor R5, one end of the resistor R5 is connected to an external power supply, the other end of the resistor R5 is connected to the cathode of the voltage-stabilizing diode D17, the anode of the voltage-stabilizing diode D17 is connected to one end of the resistor R6 and the base of the transistor Q15, the emitter of the transistor Q15 is connected to the other end of the resistor R6 and is grounded; the collector of the transistor Q15 is connected to the 54th pin of the main control chip U6, and the power-off signal is sent to the main control chip.

[0096] The power-off detection circuit is connected to the main control chip. When it is detected that the external power supply stops supplying power, a power-off signal is sent to the main control chip, and the main control chip records the current valve position and stores it in the memory.

[0097] The model of the three-terminal regulator U3 is 78L05; the model of the voltage regulator U4 is MD5333; and the model of the voltage reference chip U5 is REF3033.

[0098] Generator power generation circuit Figure 6 As shown, the generator power generation circuit includes a transformer L4, and the U pin, V pin, and W pin of the transformer L4 are respectively connected to the power line of the motor, and the U_hign pin of the transformer L4 is connected to the cathode of the diode D10 and the anode of the diode D9; the V_hign pin of the transformer L4 is connected to the cathode of the diode D12 and the anode of the diode D11; the W_hign pin of the transformer L4 is connected to the cathode of the diode D14 and the anode of the diode D13; the anode of the diode D10, the anode of the diode D12, and the anode of the diode D14 are connected and grounded; the cathode of the diode D9, the cathode of the diode D11, and the cathode of the diode D13 are connected and connected to one end of the resistor R7, one end of the resistor R9, the anode of the polar capacitor C22, one end of the capacitor C26, the vin pin of the three-terminal regulator U7, one end of the resistor R10, one end of the resistor R12, one end of the resistor R13, the anode of the polar capacitor C23, one end of the capacitor C27, and the 1 pin of the chip U10;

[0099] The other end of the resistor R7 is connected to the cathode of the voltage regulator diode D18, the anode of the voltage regulator diode D18 is connected to one end of the resistor R8 and the base of the transistor Q2, the other end of the resistor R8 is connected to the emitter of the transistor Q2, the emitter of the transistor Q3 and grounded; the collector of the transistor Q2 is connected to the base of the transistor Q3 and the other end of the resistor R9; the collector of the transistor Q3 is connected to the cathode of the polarity capacitor C22, the other end of the capacitor C26, the GND pin of the three-terminal voltage regulator U7, one end of the capacitor C30 and grounded; the Vout pin of the three-terminal voltage regulator U7 is connected to the other end of the capacitor C30, the anode of the diode D307, and the cathode of the diode D15 to output a 5V voltage to the main control chip;

[0100] The other end of the resistor R10 is connected to the cathode of the voltage zener diode D19, the anode of the voltage zener diode D19 is connected to one end of the resistor R11 and the base of the transistor Q4, the emitter of the transistor Q4 is connected to the emitter of the transistor Q5 and the emitter of the transistor Q6 and is grounded; the collector of the transistor Q4 is connected to the base of the transistor Q5 and the other end of the resistor R12, the collector of the transistor Q5 is connected to the base of the transistor Q6 and the other end of the resistor R13; the collector of the transistor Q6 is connected to the cathode of the polarity capacitor C23 and the other end of the capacitor C27 and is grounded;

[0101] Pin 2 of chip U10 is connected to one end of inductor L3, one end of resistor R24, and one end of capacitor C20; the other end of inductor L3 is connected to the positive electrode of diode D16, one end of resistor R25, the positive electrode of polar capacitor C43, and one end of resistor R26; the negative electrode of diode D16 outputs 5V voltage to power the main control chip;

[0102] Pin 3 of chip U10 is connected to the other end of capacitor C20; pin 4 of chip U10 is connected to the other end of resistor R24 ​​and the other end of resistor R25; pin 5 of chip U10 is connected to the negative electrode of polarity capacitor C42, the negative electrode of polarity battery C43, the other end of resistor R26 and grounded; pin 6 of chip U10 is connected to the positive electrode of polarity capacitor C42 and one end of inductor L2; the other end of inductor L2 is connected to pin 7 of chip U10.

[0103] Among them, the model of the three-terminal regulator U7 is 78L05, and the chip U10 is a BUCK step-down power supply chip, whose model is KP3114

[0104] Specifically, the three-phase transformer L4 boosts the motor induction voltage to high voltage and rectifies it into DC voltage through the three-phase rectifier bridge stack composed of D9-D14. The voltage boost process is divided into two stages:

[0105] 1. Rapid voltage establishment stage: mainly composed of components D18, Q2, Q3, and U7. The circuit board quickly obtains a working voltage of 5V-20V.

[0106] 2. Induction voltage storage stage: mainly composed of components D19, Q4, Q5, C23. When the voltage rises above 20V, the induction voltage is stored in the large capacitor C27, and is converted through the BUCK of the chip U10 to provide a sustainable power supply voltage for a certain period of time to the control circuit.

[0107] In this embodiment, the motor drive circuit includes a chip U10. The chip U10 is a MOS drive chip.

[0108] The main control chip is also connected to a communication module. The communication module is as follows Figure 7 As shown, when the power is off, the main control chip sends a signal through the communication module to alarm; the main control chip also sends the collected data to the host computer through the communication module.

[0109] The main control chip is also connected to a pressure sensor through a collection circuit. Figure 8 As shown, it is the acquisition circuit.

[0110] Furthermore, the main control chip is also connected to a temperature sensor, and the main control chip is also connected to a motor encoder to collect the motor shaft position signal to obtain the valve position.

[0111] According to the above embodiments, the present utility model can be well implemented. It is worth noting that, based on the above structural design, in order to solve the same technical problem, even if some insubstantial improvements are made on the present utility model, they also fall within the protection scope of the present utility model.

Claims

1. Oilfield Internet of Things oil production and blending control device, characterized in that: N oil-water mixing circuits, each of which includes an oil pipeline and a water mixing pipeline; one end of the oil pipeline is connected to the oil production well; the other end of the oil pipeline is connected to the oil-water separation skid, the water outlet of the oil-water separation skid is connected to the water inlet of the heating device through a pipeline, the water outlet of the heating device is connected to one end of the water mixing pipeline, the separated water is respectively sent to one end of the water mixing pipeline through the heating device, the other end of the water mixing pipeline is connected to the mixing port of the oil production well, and sent back to the oil well for water mixing collection; On the incoming oil pipeline, from the oil production well to the oil-water separation skid, a shutoff valve, an incoming oil pressure sensor, a temperature sensor, and a check valve are arranged in sequence; On the water injection pipeline, flow control devices and water injection pressure sensors are provided in sequence from one end to the oil production well; The water mixing pressure variable sensor, temperature variable sensor and oil pressure variable sensor in each oil-water mixing circuit are connected to the flow control device in the oil-water mixing circuit. The water mixing pressure variable sensor, temperature variable sensor and oil pressure variable sensor send the collected signals to the flow control device, and the flow control device outputs instructions to perform flow regulation work; The flow control device in each oil-water mixing circuit is also connected to the central control room to send the working data to the central control room for storage and display; The flow control device is an intelligent electric regulating valve, which simultaneously receives data signals from the central control room and data signals from the water-injected pressure sensor, the oil pressure sensor, and the temperature sensor, and performs flow control and adjustment on the intelligent electric regulating valve after comparison.

2. The oilfield Internet of Things oil production and blending control device according to claim 1 is characterized in that: The intelligent electric regulating valve includes a control circuit and an electric valve; the electric valve includes a motor and a valve body, the motor is connected to the valve body, and the opening of the valve body is controlled by controlling the rotation of the motor; the control circuit is connected to the motor and issues instructions to control the operation of the motor; The control circuit includes a main control chip, a power management circuit, and a motor drive circuit; the input end of the power management circuit is connected to an external power supply, and the output end of the power management circuit is connected to the main control chip; the motor drive circuit is connected to the motor power line, the external power supply, and the main control chip; The main control chip is connected to a temperature variable sensor, an oil pressure variable sensor, and a water mixing pressure variable sensor; the main control chip controls the motor after comparing the data signals collected from the water mixing pressure variable sensor, the oil pressure variable sensor, and the temperature variable sensor.

3. The oilfield Internet of Things oil production and blending control device according to claim 2 is characterized in that: The control circuit also includes a generator power generation circuit and a power failure detection circuit; the power failure detection circuit is connected to an external power supply to detect whether an external power supply exists; the generator power generation circuit is connected to a motor power line; the motor shaft is connected to a handwheel and a valve body, and the handwheel drives the motor shaft to rotate.

4. The oilfield Internet of Things oil production and blending control device according to claim 3 is characterized in that: The generator power generation circuit includes a transformer L4, wherein the U pin, V pin, and W pin of the transformer L4 are respectively connected to the power line of the motor, and the U_hign pin of the transformer L4 is connected to the cathode of the diode D10 and the anode of the diode D9; the V_hign pin of the transformer L4 is connected to the cathode of the diode D12 and the anode of the diode D11; the W_hign pin of the transformer L4 is connected to the cathode of the diode D14 and the anode of the diode D13; the anode of the diode D10, the anode of the diode D12, and the anode of the diode D14 are connected and grounded; the cathode of the diode D9, the cathode of the diode D11, and the cathode of the diode D13 are connected and connected to one end of the resistor R7, one end of the resistor R9, the anode of the polar capacitor C22, one end of the capacitor C26, the vin pin of the three-terminal regulator U7, one end of the resistor R10, one end of the resistor R12, one end of the resistor R13, the anode of the polar capacitor C23, one end of the capacitor C27, and the 1 pin of the chip U10; The other end of the resistor R7 is connected to the cathode of the voltage regulator diode D18, the anode of the voltage regulator diode D18 is connected to one end of the resistor R8 and the base of the transistor Q2, the other end of the resistor R8 is connected to the emitter of the transistor Q2, the emitter of the transistor Q3 and grounded; the collector of the transistor Q2 is connected to the base of the transistor Q3 and the other end of the resistor R9; the collector of the transistor Q3 is connected to the cathode of the polarity capacitor C22, the other end of the capacitor C26, the GND pin of the three-terminal voltage regulator U7, one end of the capacitor C30 and grounded; the Vout pin of the three-terminal voltage regulator U7 is connected to the other end of the capacitor C30, the anode of the diode D307, and the cathode of the diode D15 to output a 5V voltage to the main control chip; The other end of the resistor R10 is connected to the cathode of the voltage zener diode D19, the anode of the voltage zener diode D19 is connected to one end of the resistor R11 and the base of the transistor Q4, the emitter of the transistor Q4 is connected to the emitter of the transistor Q5 and the emitter of the transistor Q6 and is grounded; the collector of the transistor Q4 is connected to the base of the transistor Q5 and the other end of the resistor R12, the collector of the transistor Q5 is connected to the base of the transistor Q6 and the other end of the resistor R13; the collector of the transistor Q6 is connected to the cathode of the polarity capacitor C23 and the other end of the capacitor C27 and is grounded; Pin 2 of chip U10 is connected to one end of inductor L3, one end of resistor R24, and one end of capacitor C20; the other end of inductor L3 is connected to the positive electrode of diode D16, one end of resistor R25, the positive electrode of polar capacitor C43, and one end of resistor R26; the negative electrode of diode D16 outputs 5V voltage to power the main control chip; Pin 3 of chip U10 is connected to the other end of capacitor C20; pin 4 of chip U10 is connected to the other end of resistor R24 ​​and the other end of resistor R25; pin 5 of chip U10 is connected to the negative electrode of polarity capacitor C42, the negative electrode of polarity battery C43, the other end of resistor R26 and grounded; pin 6 of chip U10 is connected to the positive electrode of polarity capacitor C42 and one end of inductor L2; the other end of inductor L2 is connected to pin 7 of chip U10.

5. The oilfield Internet of Things oil production and blending control device according to claim 3 is characterized in that: The power-off detection circuit includes a resistor R5, one end of which is connected to an external power supply, the other end of which is connected to the cathode of a Zener diode D17, the anode of which is connected to one end of a resistor R6 and the base of a transistor Q15, the emitter of which is connected to the other end of the resistor R6 and is grounded; the collector of the transistor Q15 is connected to pin 54 of the main control chip U6 to send a power-off signal to the main control chip.

6. The oilfield Internet of Things oil production and blending control device according to claim 1 is characterized in that: The motor driving motor is connected to the main control chip U6 through the MOS tube driving chip U1. The motor driving circuit includes a resistor R30. One end of the resistor R30 is connected to the cathode of the diode D4 and the 19th pin of the MOS driving chip U1; the other end of the resistor R30 is connected to the anode of the diode D4, one end of the capacitor C4, and the gate of the MOS tube Q9; the drain of the MOS tube Q9 is connected to the drain of the MOS tube Q12 and connected to the 24V external voltage; the source of the MOS tube Q9 is connected to the other end of the capacitor C4, the drain of the MOS tube Q8, and the U pin of the motor power line; One end of the resistor R33 is connected to the 11th pin of the MOS tube driving chip U1, the other end of the resistor R33 is connected to one end of the capacitor C5 and the gate of the MOS tube Q8, the source of the MOS tube Q8 is connected to the other end of the capacitor C5, one end of the capacitor C7, the source of the MOS tube Q10, one end of the resistor R36, one end of the resistor R37, one end of the resistor R38, one end of the resistor R39, one end of the capacitor C9, one end of the resistor R17, and the source of the MOS tube Q13; The gate of the MOS tube Q11 is connected to one end of the resistor R31, the positive electrode of the diode D5, and one end of the capacitor C6; the other end of the resistor R31 is connected to the negative electrode of the diode D5 and the 16th pin of the MOS tube driver chip U1; the source of the MOS tube Q11 is connected to the other end of the capacitor C6, the drain of the MOS tube Q10, and the V pin of the motor power line; The gate of the MOS tube Q12 is connected to one end of the resistor R32, the positive electrode of the diode D6, and one end of the capacitor C8; the other end of the resistor R32 is connected to the negative electrode of the diode D6 and the 13th pin of the MOS tube driver chip U1; the source of the MOS tube Q12 is connected to the other end of the capacitor C8, the drain of the MOS tube Q13, and the W pin of the motor power line; The gate of the MOS tube Q10 is connected to the other end of the capacitor C7 and one end of the resistor R34, and the other end of the resistor R34 is connected to the 10th pin of the MOS tube driving chip U1; The gate of the MOS tube Q13 is connected to the other end of the capacitor C9 and one end of the resistor R35, and the other end of the resistor R35 is connected to the 9th pin of the MOS tube driving chip U1; The other end of resistor R36 is connected to the other end of resistor R37, the other end of resistor R38, the other end of resistor R39, one end of capacitor C40, the emitter of transistor Q14, one end of capacitor C41 and grounded; the other end of capacitor C40 is connected to the other end of resistor R17 and the base of transistor Q14; the collector of transistor Q14 is connected to one end of capacitor C41, one end of resistor R40 and pin 56 of main control chip U6; the other end of resistor R40 is connected to 3.3V voltage.

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