Automatic monitoring device for pumping unit packing piercing leakage and polish rod dry grinding

Abstract

The utility model relates to the field of pumping unit packing monitoring, in particular to an automatic pumping unit packing piercing leakage and polish rod dry grinding monitoring device which comprises a packing box pressing cap and a pumping unit polish rod arranged at the top of the packing box pressing cap, the bottom end of the pumping unit polish rod penetrates through the packing box pressing cap, and monitoring equipment is arranged at the top of the packing box pressing cap. The monitoring device comprises an anti-explosion control box, a positioning structure is arranged on one side of the anti-explosion control box and used for fixing the anti-explosion control box to the top position of a packing box pressing cap, and a testing structure is arranged on one side of the positioning structure. According to the anti-explosion control box, the two positioning pieces are opened and closed, and the hasps and the hinges are matched, so that the positioning pieces can be quickly and conveniently mounted on the packing box pressing cap, compared with a common monitoring method, the anti-explosion control box is more convenient to disassemble and assemble, water and dust can be prevented from entering the two positioning pieces through nitrile rubber, and the anti-explosion control box is more convenient to disassemble and assemble. And the service life of the polish rod of the oil pumping unit is influenced.

Description

Technical Field

[0001] This utility model relates to the field of oil pumping unit packing monitoring, specifically an automatic monitoring device for oil pumping unit packing puncture and dry friction of polished rod. Background Technology

[0002] Monitoring of packing leakage and polished rod dry wear during oilfield production is typically done through well inspections by pumping workers, which can lead to delays in detection. To address this issue, temperature and oil-water sensors are usually installed at the packing box cap location. The information from these two sensors is then analyzed to determine if packing leakage or polished rod dry wear has occurred.

[0003] The above-mentioned solutions involve disassembly and assembly using bolts and other fixing methods, which is quite troublesome. Furthermore, the temperature sensor, oil and water sensor, and information processing equipment need to be powered on continuously, which requires the installation of a large number of wires or frequent manual power supply replacements, resulting in a waste of manpower and resources. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an automatic monitoring device for packing puncture and dry friction of oil pumping units, which solves the technical problem that existing technologies cannot control the power consumption of temperature sensors, oil-water sensors, and information processing equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic monitoring device for packing leakage and polished rod dry friction in a pumping unit includes a packing box cap and a pumping unit polished rod disposed on top of the packing box cap. The bottom end of the polished rod penetrates the packing box cap. A monitoring device is provided at the top of the packing box cap. The monitoring device includes an explosion-proof control box. A positioning structure is provided on one side of the explosion-proof control box for fixing the explosion-proof control box to the top of the packing box cap. A testing structure is provided on one side of the positioning structure for monitoring working information. The explosion-proof control box is used to issue an early warning based on the working information, which includes ambient temperature, surface temperature of the pumping unit polished rod, and the presence of water or crude oil in the positioning structure.

[0007] Furthermore, the positioning structure includes two positioning elements, which together form a circular positioning ring. The positioning ring is fitted onto the outer wall of the packing box cap. A hinge is provided on one side of the positioning ring to connect the two positioning elements and allow them to rotate relative to each other. A buckle is provided on the other side of the positioning ring to limit the relative rotation of the two positioning elements.

[0008] Furthermore, a device cover is fixedly connected to the top of the positioning component, and a nitrile rubber sheet is fixedly connected to the inner wall of the device cover. The inner side of the nitrile rubber sheet is in contact with the side wall of the oil pump's polished rod.

[0009] Furthermore, the test structure includes a low-power oil-water detection sensor, which includes a stainless steel sensor body. The stainless steel sensor body penetrates the side wall of one of the positioning components and is fixedly connected to the positioning component. One end of the stainless steel sensor body is fixedly connected to a transparent tempered glass, and a monitoring circuit board is provided on the inner side of the transparent tempered glass. The other end of the stainless steel sensor body is fixedly connected to a first waterproof cable protection connector, and a first oil-resistant cable is inserted into the inner wall of the first waterproof cable protection connector.

[0010] Furthermore, the test structure also includes a low-power infrared temperature sensor, which includes a second waterproof cable protection connector. A fixing plate is fixedly connected to the top of one of the positioning components. The second waterproof cable protection connector penetrates the fixing plate and is fixedly connected to it. A sensor body is fixedly connected to one end of the second waterproof cable protection connector. A pressure cap is fixedly connected to the end of the sensor body away from the second waterproof cable protection connector. An infrared temperature probe is provided inside the pressure cap. A circuit board is provided at the end of the infrared temperature probe away from the pressure cap. A second crude oil resistant cable is provided at the end of the circuit board away from the infrared temperature probe. The second crude oil resistant cable and the second waterproof cable protection connector are plugged into each other.

[0011] An automatic monitoring system for packing leakage and polished rod dry wear in oil pumping units includes:

[0012] The information acquisition module is used to obtain work information;

[0013] The information processing module is used to control the power output based on the working information, and to determine the status of the packing and the sucker rod based on the working information;

[0014] The Lora module is used to transmit the status of packing and sucker rods.

[0015] Furthermore, the information collection module includes:

[0016] The temperature monitoring unit is used to monitor the ambient temperature and the surface temperature of the oil pumping unit's polished rod;

[0017] The oil-water monitoring unit is used to monitor the liquid in the packing.

[0018] The battery power acquisition unit is used to obtain the power information of the external battery.

[0019] Furthermore, the information processing module includes:

[0020] The power management unit is used to control the power supply module. The power management unit has two modes: low power and normal power. The low power mode only supplies power to the oil and water monitoring unit and the RTC unit, while the normal power mode supplies power to the low power infrared temperature sensor, the battery power processing unit and the Lora module.

[0021] The RTC unit is used to periodically wake up the power management unit in normal power consumption mode;

[0022] The processing circuit is used to preprocess the information acquired by the low-power oil and water detection sensor to generate a wake-up signal, which is used to wake up the power management unit in normal power consumption mode.

[0023] The battery power processing unit is used to analyze the power information of external batteries.

[0024] Furthermore, the processing circuit includes a microcontroller U1, a voltage switch control chip U2, a capacitor C1, a resistor R1, a resistor R2, and a resistor R3;

[0025] The signal acquired by the low-power oil and water detection sensor is input to the Leakin processing circuit in two ways. One way goes through capacitor C1 to the WakeUp port of microcontroller U1 to wake up the power management unit in normal power consumption mode; the other way goes to the IO port of microcontroller U1 as an oil and water monitoring alarm signal. Resistor R1 is grounded to keep microcontroller U1 enabled.

[0026] The PowerEn port of microcontroller U1 outputs the signal received from the WakeUp port to the EN port of voltage switch control chip U2, which is used to control the IN and OUT ports of voltage switch control chip U2. The IN port of voltage switch control chip U2 is used as an input terminal to connect to the input of external power supply, and the OUT port of voltage switch control chip U2 is used as an output terminal to power the low-power infrared temperature sensor, battery power processing unit and LoRa module. Resistor R2 is used as a pull-down resistor to keep voltage switch control chip U2 enabled. The two ends of resistor R3 are connected to the ILIM port and GND interface of voltage switch control chip U2 respectively, which is used to set the maximum current of the IN and OUT ports of voltage switch control chip U2. Resistors R2 and R3 are grounded.

[0027] Furthermore, the battery power processing unit includes an analog-to-digital converter for converting external battery power information into digital signals; and a DMA bus for directly reading digital signals.

[0028] Compared with the prior art, this utility model provides an automatic monitoring device for packing leakage and polished rod dry friction in oil pumping units, which has the following beneficial effects:

[0029] 1. This utility model enables the entire system to operate in a low-power mode during daily work, only acquiring information from the low-power oil and water detection sensor to ensure that staff are notified immediately when packing leaks occur. It also periodically wakes up the entire system to acquire information from the external battery power and the low-power infrared temperature sensor to ensure that staff are notified as soon as possible to perform maintenance when dry running of the polished rod occurs. Compared with common automatic monitoring systems, the entire system has a longer standby time, does not require a large number of wires or frequent power supply replacements, can effectively save manpower, and ensures the real-time triggering of alarms when packing leaks or dry running of the polished rod occur.

[0030] 2. This utility model first uses the opening and closing of two positioning parts, and through the cooperation of buckles and hinges, the positioning parts can be quickly and conveniently installed on the packing box pressure cap. Compared with common monitoring methods, the operation of disassembling and assembling the explosion-proof control box is more convenient. In addition, the nitrile rubber can prevent water and dust from entering the two positioning parts, which would affect the service life of the oil pumping unit's polished rod. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of an automatic monitoring device for packing puncture and dry grinding of a pumping unit according to the present invention;

[0033] Figure 2 This is a schematic diagram of the monitoring equipment of this utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the low-power oil and water detection sensor of this utility model.

[0035] Figure 4 This is a schematic diagram of the structure of the low-power infrared temperature sensor of this utility model;

[0036] Figure 5 This is a module diagram of an automatic system for packing puncture and dry grinding of a pumping unit according to the present invention;

[0037] Figure 6 This is a circuit diagram of the processing circuit of this utility model;

[0038] Figure 7 This is a flowchart illustrating the monitoring method of an automatic monitoring system for packing puncture and dry friction of a pumping unit according to this utility model.

[0039] 1. Packing box cap; 2. Monitoring equipment; 3. Oil pumping unit polished rod; 4. Small knurled set screw; 5. Drain screw; 6. Positioning component; 7. Hinge; 8. Device box cover; 9. Low-power infrared temperature sensor; 10. Explosion-proof antenna; 11. Explosion-proof control box; 12. Explosion-proof control box cover; 13. Waterproof cable connector; 14. Low-power oil-water detection sensor; 15. Fastener;

[0040] 16. First crude oil resistant cable; 17. First waterproof cable protection connector; 18. Stainless steel sensor body; 19. Monitoring circuit board; 20. Transparent tempered glass;

[0041] 21. Second crude oil resistant cable; 22. Second waterproof cable protection connector; 23. Sensor body; 24. Circuit board; 25. Infrared temperature probe; 26. Pressure cap. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. This will allow for a full understanding and implementation of how this application uses technical means to solve technical problems and achieve technical effects.

[0043] In the field of oil exploration, after drilling is completed, pumping units are used to extract crude oil. The polished rod of the pumping unit drives the sucker rod to move up and down inside the tubing. A pump installed at the end of the tubing draws the crude oil from the bottom of the well to the surface, where it enters the oil pipeline. The extracted crude oil is usually under pressure, and packing is typically used as a sealing material. This packing is added to the packing box to seal the polished rod, allowing the crude oil to enter the subsequent oil pipeline process.

[0044] In practical use, the packing seal will gradually fail due to wear from the reciprocating motion of the polished rod over a long period of time, causing crude oil or oil-water mixture to spray out of the packing box, resulting in packing puncture. After a packing puncture, the leaked crude oil will flow onto the ground and cause environmental pollution, which must be detected and the machine shut down for maintenance in a timely manner.

[0045] Meanwhile, if the packing box is pressed too tightly, resulting in too small a dynamic seal clearance; or if the bottom-hole pump fails; the sucker rod breaks; or the tubing wears unevenly or is corroded, all of these can lead to dry running of the polished rod. Similarly, if dry running of the polished rod occurs, it indicates a problem with the pumping unit's production, requiring immediate shutdown and repair.

[0046] Currently, monitoring of packing leakage and polished rod dry wear during oilfield production relies on manual inspection by pumping workers during well patrols. This method suffers from delays in detection. Therefore, if... Figure 1As shown, this utility model proposes an automatic monitoring device for packing leakage and polished rod dry wear of a pumping unit. It includes a packing box cap 1 and a polished rod 3 of the pumping unit disposed on top of the packing box cap 1. The bottom end of the polished rod 3 penetrates the packing box cap 1, and a monitoring device 2 is provided at the top of the packing box cap 1. Specifically, packing is disposed in the packing box cap 1, and the outer surface of the polished rod 3 contacts the inner surface of the packing. The monitoring device 2 is used to monitor in real time whether packing leakage and polished rod dry wear occur, and can limit the movement trajectory of the polished rod 3 to a certain extent, thereby improving the service life of the polished rod 3.

[0047] Monitoring device 2 includes an explosion-proof control box 11, such as Figure 2 As shown, a positioning structure is provided on one side of the explosion-proof control box 11. The positioning structure is used to fix the explosion-proof control box 11 at the top position of the packing box cap 1. Specifically, in order to monitor in real time whether there is packing leakage and dry friction of the polished rod, a sensor and control device need to be set at the connection position between the polished rod 3 of the pumping unit and the packing box cap 1. Therefore, the positioning structure includes two positioning parts 6, which form a circular positioning ring. The positioning ring is fitted on the outer wall of the packing box cap 1. A hinge 7 is provided on one side of the positioning ring. The hinge 7 is used to connect the two positioning parts 6 and allow the two positioning parts 6 to rotate relative to each other. A buckle 15 is provided on the other side of the positioning ring. The buckle 15 is used to limit the relative rotation of the two positioning parts 6. Specifically, by connecting one end of the two positioning parts 6 through the hinge 7 and fixing the end of the two positioning parts 6 away from the hinge 7 with the buckle 15, the positioning ring can be quickly and conveniently installed at the top position of the packing box cap 1.

[0048] An explosion-proof control box 11 is fixedly connected to one end of an explosion-proof control box cover 12. The explosion-proof control box cover 12 is used to protect the internal components of the explosion-proof control box 11. A waterproof cable connector 13 is provided on one side of the explosion-proof control box 11. The waterproof cable connector 13 is used to prevent dust from entering the explosion-proof control box 11.

[0049] The top of the positioning component 6 is fixedly connected to the device cover 8, and the inner wall of the device cover 8 is fixedly connected to the nitrile rubber sheet. The inner side of the nitrile rubber sheet is in contact with the side wall of the pumping unit polished rod 3. Specifically, the surface of the nitrile rubber sheet is set as a slope, and the closer it is to the pumping unit polished rod 3, the higher the horizontal height is. This can prevent rainwater from entering the positioning ring. In addition, the nitrile rubber sheet is flexible and will not affect the movement of the pumping unit polished rod 3.

[0050] The bottom of the positioning component 6 is threaded with several small knurled set screws 4, which are used to adjust the position of the positioning component 6. Specifically, the small knurled set screws 4 are used to increase the friction between the positioning component 6 and the packing box cap 1, so as to prevent the positioning ring from falling off due to wellhead vibration or strong winds.

[0051] One of the positioning components 6 has an oil drain screw 5 on one side. When a packing leak occurs in the packing box cap 1, the oil drain screw 5 is used to drain the crude oil from the packing box cap 1.

[0052] A test structure is provided on one side of the positioning structure to monitor working information; specifically, since it is necessary to monitor in real time whether packing gland leakage and dry grinding of the polished rod occur, the test structure includes a low-power oil and water detection sensor 14, such as... Figure 3 As shown, the low-power oil and water detection sensor 14 includes a stainless steel sensor body 18, which penetrates the side wall of one of the positioning components 6 and is fixedly connected to the positioning component 6. One end of the stainless steel sensor body 18 is fixedly connected to a transparent tempered glass 20, and a monitoring circuit board 19 is provided on the inner side of the transparent tempered glass 20. The other end of the stainless steel sensor body 18 is fixedly connected to a first waterproof cable protection connector 17, and a first oil-resistant cable 16 is inserted into the inner wall of the first waterproof cable protection connector 17. Specifically, when there is crude oil or water on the surface of the transparent tempered glass 20, the capacitance of the transparent tempered glass 20 will change. The monitoring circuit board 19 will sense this capacitance change and transmit this signal to the explosion-proof control box 11 through the first oil-resistant cable 16 to monitor whether packing leaks have occurred. The first waterproof cable protection connector 17, the stainless steel sensor body 18, and the transparent tempered glass 20 all serve to protect the first oil-resistant cable 16 and the monitoring circuit board 19 to extend their service life.

[0053] The test structure also includes a low-power infrared temperature sensor 9, such as Figure 4As shown, the low-power infrared temperature sensor 9 includes a second waterproof cable protection connector 22. A fixing plate is fixedly connected to the top of one of the positioning components 6. The second waterproof cable protection connector 22 penetrates the fixing plate and is fixedly connected to it. A sensor body 23 is fixedly connected to one end of the second waterproof cable protection connector 22. A pressure cap 26 is fixedly connected to the end of the sensor body 23 away from the second waterproof cable protection connector 22. An infrared temperature probe 25 is provided inside the pressure cap 26. A circuit board 24 is provided at the end of the infrared temperature probe 25 away from the pressure cap 26. A second oil-resistant cable 21 is provided at the end of the circuit board 24 away from the infrared temperature probe 25. The second oil-resistant cable 21 and the second waterproof cable protection connector 22... 2. Plug-in connection; Specifically, since all objects emit infrared rays of different wavelengths according to their temperature, the infrared temperature probe 25 can capture this information. The circuit board 24 converts the energy of the infrared rays into corresponding electrical signals, which are finally transmitted to the explosion-proof control box 11 through the second oil-resistant cable 21 to complete the monitoring of the surface temperature of the oil pumping unit's polished rod 3 and the ambient temperature. When the surface temperature of the oil pumping unit's polished rod 3 exceeds the set threshold, it indicates that the polished rod is dry-grinding. In addition, the second waterproof cable protection connector 22 and the sensor body 23 are used to ensure sealing and prevent water or oil and other liquids from contacting the circuit board 24 and the infrared temperature probe 25. The pressure cap 26 is used to determine the position of the infrared temperature probe 25.

[0054] An explosion-proof antenna 10 is fixedly connected to the top of the explosion-proof control box 11. The explosion-proof antenna 10 is used to receive and transmit signals.

[0055] The explosion-proof control box 11 is used to issue early warnings based on working information, including ambient temperature, surface temperature of the oil pumping unit's polished rod 3, and whether water or crude oil is present in the positioning structure. Specifically, the explosion-proof control box 11 analyzes whether there is packing gland puncture or polished rod dry friction based on information obtained from the low-power infrared temperature sensor 9 and the low-power oil-water detection sensor 14. If so, it will alarm the staff to prevent crude oil leakage from causing environmental pollution and resource waste.

[0056] In this utility model, by opening and closing the two positioning parts 6 and by cooperating with the buckle 15 and the hinge 7, the positioning parts 6 can be quickly and conveniently installed on the packing box cap 1. Compared with common monitoring methods, the operation of disassembling and assembling the explosion-proof control box 11 is more convenient. In addition, the nitrile rubber can prevent water and dust from entering the two positioning parts 6, which would affect the service life of the oil pumping unit's polished rod 3.

[0057] like Figure 5-6 As shown, this utility model also proposes an automatic monitoring system for packing leakage and polished rod dry friction in oil pumping units, including:

[0058] The information acquisition module is used to obtain working information; specifically, in order to monitor in real time whether packing leaks and dry friction of the polished rod occur, it is necessary to detect the ambient temperature, the surface temperature of the polished rod 3 of the pumping unit, and whether there is water or crude oil in the packing. Therefore, the information acquisition module includes:

[0059] The temperature monitoring unit is used to monitor the ambient temperature and the surface temperature of the oil pumping unit's polished rod 3; specifically, the temperature monitoring unit is built based on a low-power infrared temperature sensor 9.

[0060] The oil-water monitoring unit is used to monitor the liquid in the packing; specifically, the oil-water monitoring unit is built based on the low-power oil-water detection sensor 14.

[0061] The battery power acquisition unit is used to obtain the power information of the external battery. Specifically, the power information of the external battery is a continuously changing voltage value, which can directly reflect the state of the external battery, directly correspond to the potential difference across the two ends of the external battery, and can also serve as a basis for power management, making it easier to determine the duration of low-power operation based on the battery voltage.

[0062] The power supply module is used to power the information processing module, information acquisition module, and LoRa module; specifically, the power supply module is built based on an external battery and is used to power the entire system.

[0063] The information processing module controls the power output based on work information and determines the status of the packing and the polished rod 3 of the pumping unit based on the work information. Specifically, since the external power supply in this system has limited capacity, under normal operating conditions, it is necessary to minimize the power consumption of the entire system to improve its service life. However, when packing leaks or polished rod dry friction occurs, it is necessary to report this to the staff as quickly as possible. Therefore, the information processing module includes:

[0064] The power management unit is used to control the power supply module. The power management unit has two modes: low power and normal power. The low power mode only supplies power to the oil and water monitoring unit and the RTC unit, while the normal power mode supplies power to the low power infrared temperature sensor 9, the battery power processing unit and the Lora module.

[0065] The RTC unit is used to periodically wake up the power management unit in normal power consumption mode;

[0066] The processing circuit preprocesses the information acquired by the low-power oil-water detection sensor 14 to generate a wake-up signal, which is used to wake up the power management unit in its normal power consumption mode. Specifically, when crude oil or water appears in the packing gland, it indicates a packing gland leak, requiring a direct wake-up of the entire system. Therefore, if... Figure 6As shown, the processing circuit includes a microcontroller U1, a voltage switch control chip U2, a capacitor C1, a resistor R1, a resistor R2, and a resistor R3;

[0067] Among them, the signal obtained by the low-power oil and water detection sensor 14 is input to the processing circuit in two ways. One way goes through capacitor C1 to the WakeUp port of microcontroller U1 to wake up the normal power consumption mode of the power management unit; the other way goes to the IO port of microcontroller U1 as an oil and water monitoring alarm signal. Resistor R1 is grounded to keep microcontroller U1 enabled.

[0068] The PowerEn port of microcontroller U1 outputs the signal received from the WakeUp port to the EN port of voltage switch control chip U2, which is used to control the IN and OUT ports of voltage switch control chip U2. The IN port of voltage switch control chip U2 serves as an input terminal for connecting to the external power supply, while the OUT port serves as an output terminal for powering the low-power infrared temperature sensor 9, the battery power processing unit, and the LoRa module. Resistor R2 acts as a pull-down resistor to keep voltage switch control chip U2 enabled. The two ends of resistor R3 are connected to the ILIM port and GND interface of voltage switch control chip U2, respectively, to set the maximum current of the IN and OUT ports of voltage switch control chip U2. Resistors R2 and R3 are grounded. Specifically, the processing circuit enables the power management unit to operate in low-power mode during normal operation, and to immediately wake up the normal power mode when crude oil or water appears in the packing, so that staff can perform timely maintenance accordingly.

[0069] The battery power processing unit is used to analyze the power information of the external battery. Specifically, since the external battery powers the system, its power level is crucial. If the external battery's power is too low, the entire system will malfunction. Therefore, the battery power processing unit includes an analog-to-digital converter (ADC) to convert the external battery power information into a digital signal and a DMA bus to directly read the digital signal. Specifically, the ADC can directly convert the external battery power information into a digital signal, and the DMA bus is a technology that allows external devices or internal subsystems to directly read and write system memory without CPU intervention. The main purpose of DMA is to improve data transfer efficiency and reduce the CPU load, especially in tasks requiring large amounts of data transfer. It should be noted that both the ADC and the DMA bus are existing technologies and will not be elaborated upon here.

[0070] The Lora module is used to transmit the status of the packing and the sucker rod 3 of the pumping unit. Specifically, when crude oil or water appears in the packing, communication equipment is needed to transmit signals in order to notify the staff as soon as possible. Therefore, the Lora module is connected to the explosion-proof antenna 10, and the Lora module is equipped with a communication address DIP switch and a sampling time DIP switch as the address code when the slave station is working.

[0071] This invention enables the entire system to operate in a low-power mode during daily work, only acquiring information from the low-power oil and water detection sensor 14. This ensures that staff are notified immediately when packing leaks occur. The system is also periodically woken up to acquire information from the external battery level and the low-power infrared temperature sensor 9, ensuring that staff are notified as soon as possible to perform maintenance when dry running of the polished rod occurs. Compared with common automatic monitoring systems, the entire system has a longer standby time, does not require a large number of wires or frequent power supply replacements, effectively saves manpower, and ensures the real-time triggering of alarms when packing leaks or dry running of the polished rod occur.

[0072] like Figure 7 As shown, this utility model also proposes a monitoring method for an automatic monitoring system for packing leakage and polished rod dry friction in oil pumping units, specifically including the following steps:

[0073] S1. Determine whether oil or water is detected in the packing based on the signal obtained by the low-power oil-water detection sensor 14.

[0074] If so, proceed to step S3;

[0075] If not, then the process ends;

[0076] S2. Determine if the timer in the RTC unit has expired;

[0077] If so, proceed to step S3;

[0078] If not, then the process ends;

[0079] S3. Wake up the power management unit to normal power consumption mode and power the low-power infrared temperature sensor 9, battery power processing unit and LoRa module; specifically, when waking up the power management unit to normal power consumption mode, first initialize the DMA bus, analog-to-digital converter and RTC unit to ensure that the above components make fast and accurate responses.

[0080] The S4 and Lora modules transmit information on the rod temperature, ambient temperature, oil and water levels in the packing, and external battery power. Specifically, when testing the rod temperature, 30 points need to be read continuously at 0.5-second intervals.

[0081] S5. Reset the RTC unit timing and enable the low-power mode of the power management unit.

[0082] Those skilled in the art will understand that all or part of the steps in the methods of the following embodiments can be implemented by a program instructing related hardware. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0083] The above embodiments provide a detailed description of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic monitoring device for packing leakage and polished rod dry wear of a pumping unit, comprising a packing box cap (1) and a pumping unit polished rod (3) disposed on the top of the packing box cap (1), wherein the bottom end of the pumping unit polished rod (3) penetrates the packing box cap (1), characterized in that, A monitoring device (2) is provided at the top of the packing box cap (1). The monitoring device (2) includes an explosion-proof control box (11). A positioning structure is provided on one side of the explosion-proof control box (11). The positioning structure is used to fix the explosion-proof control box (11) at the top of the packing box cap (1). A test structure is provided on one side of the positioning structure. The test structure is used to monitor working information. The explosion-proof control box (11) is used to issue an early warning based on the working information. The working information includes the ambient temperature, the surface temperature of the oil pumping unit's polished rod (3), and whether there is water or crude oil in the positioning structure.

2. The automatic monitoring device for packing puncture and polished rod dry friction of the pumping unit according to claim 1, characterized in that, The positioning structure includes two positioning elements (6), which together form a circular positioning ring. The positioning ring is fitted onto the outer wall of the packing box cap (1). A hinge (7) is provided on one side of the positioning ring. The hinge (7) is used to connect the two positioning elements (6) and allow the two positioning elements (6) to rotate relative to each other. A buckle (15) is provided on the other side of the positioning ring. The buckle (15) is used to limit the relative rotation of the two positioning elements (6).

3. The automatic monitoring device for packing puncture and dry friction of the oil pumping unit according to claim 2, characterized in that, The top of the positioning component (6) is fixedly connected to a device cover (8), and the inner wall of the device cover (8) is fixedly connected to a nitrile rubber sheet. The inner side of the nitrile rubber sheet is in contact with the side wall of the oil pumping unit's polished rod (3).

4. The automatic monitoring device for packing leakage and polished rod dry friction of the pumping unit according to claim 1, characterized in that, The test structure includes a low-power oil and water detection sensor (14), which includes a stainless steel sensor body (18). The stainless steel sensor body (18) passes through the side wall of one of the positioning components (6) and is fixedly connected to the positioning component (6). One end of the stainless steel sensor body (18) is fixedly connected to a transparent tempered glass (20). A monitoring circuit board (19) is provided on the inner side of the transparent tempered glass (20). The other end of the stainless steel sensor body (18) is fixedly connected to a first waterproof cable protection connector (17). A first oil-resistant cable (16) is inserted into the inner wall of the first waterproof cable protection connector (17).

5. The automatic monitoring device for packing puncture and polished rod dry friction of the pumping unit according to claim 2, characterized in that, The test structure also includes a low-power infrared temperature sensor (9), which includes a second waterproof cable protection connector (22). A fixing plate is fixedly connected to the top of one of the positioning components (6). The second waterproof cable protection connector (22) penetrates the fixing plate and is fixedly connected to the fixing plate. A sensor body (23) is fixedly connected to one end of the second waterproof cable protection connector (22). A pressure cap (26) is fixedly connected to the end of the sensor body (23) away from the second waterproof cable protection connector (22).

6. The automatic monitoring device for packing puncture and dry friction of the oil pumping unit according to claim 5, characterized in that, An infrared temperature probe (25) is provided on the inner side of the pressure cap (26). A circuit board (24) is provided at the end of the infrared temperature probe (25) away from the pressure cap (26). A second crude oil resistant cable (21) is provided at the end of the circuit board (24) away from the infrared temperature probe (25). The second crude oil resistant cable (21) and the second waterproof cable protection connector (22) are plugged into each other.

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