A modular split-type dynamometer

Abstract

This utility model belongs to the technical field of oil well monitoring equipment, and specifically provides a modular split-type dynamometer, comprising a load sensing base and an electrical control function cover, wherein the load sensing base and the electrical control function cover are detachably and sealedly assembled; the load sensing base has a hollow box structure, which houses the load sensing component, and is also provided with a data transmission connector electrically connected to the load sensing component; the electrical control function cover includes a cover and an electrical control integration terminal located inside the cover, the electrical control integration terminal including at least a main control unit, a wireless communication unit and an energy storage unit, and is provided with a data transmission interface, which is electrically connected to the main control unit; this solution divides the dynamometer into a load sensing base that is less prone to failure and an electrical control function cover that is prone to failure, both of which are detachably and mechanically sealed assembled and electrically connected; when needed, only the electrical control function cover needs to be removed without disassembling the entire machine, solving the shortcomings of existing whole-machine disassembly and assembly.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil well monitoring equipment, and in particular relates to a modular split-type dynamometer. Background Technology

[0002] Dynamometer testing is a core technical means to judge the production status of oil wells in the oilfield production management process. By simultaneously collecting data on the suspension point load and polished rod displacement of the pumping unit and drawing dynamometer diagrams, it can intuitively reflect the formation fluid supply capacity and the operating status of the pumping unit. At the same time, it can accurately identify abnormal downhole conditions such as tubing waxing, pump leakage, and rod and tubing wear. It has now become the basis for routine dynamic monitoring and fault diagnosis of oil wells in various oilfields, providing key data support for optimizing oil production systems and arranging downhole operations.

[0003] Currently, integrated dynamometers are commonly used on-site to complete dynamometer chart acquisition. These devices are installed on the polished rod above the suspension rope of the pumping unit. They rely on built-in load sensors to collect suspension point load signals in real time, and a matching acceleration sensor to simultaneously acquire polished rod displacement information. Both types of sensor signals are uniformly transmitted to the integrated data processing module inside the device to complete calculation, storage, and dynamometer chart generation. Some models are equipped with wireless communication units that can remotely upload test data to the oilfield management platform. The overall structure has a high degree of integration and is widely used in short-term single-well inspections and routine operating condition monitoring scenarios.

[0004] However, during long-term use in oilfields, integrated dynamometers have gradually revealed several unavoidable practical defects: when the dynamometer malfunctions, the entire unit needs to be disassembled for maintenance or replacement. Since the dynamometer is installed on the polished rod of the pumping unit using specific clamps, if the clamps slip or the pumping unit brakes are not secure when unloading the load, the operator's hand holding the polished rod may be crushed, resulting in finger breakage or fracture, thus increasing the safety hazards of the operation. In addition, frequent disassembly and assembly of the dynamometer can cause certain damage to the polished rod, affecting its service life and sealing effect.

[0005] Based on the above analysis, this solution designs a modular split-type dynamometer. Utility Model Content

[0006] The purpose of this utility model is to provide a modular split-type dynamometer. This solution divides the dynamometer into a load sensing base that is not prone to failure and an electronic control function cover that is prone to failure. The two are assembled with a detachable mechanical seal and have a pluggable electrical connection. When maintenance or testing is required, only the electronic control function cover needs to be separated from the load sensing base, without disassembling the entire machine. This avoids the shortcomings of traditional whole-machine disassembly, such as low disassembly and assembly efficiency, high safety risks, and easy damage to the optical rod.

[0007] This solution provides a modular, split-type dynamometer, comprising: The instrument comprises a load sensing substrate and an electronic control function cover, which are detachably and sealed together to form the main body of the dynamometer. The load sensing substrate is a hollow box structure with an opening at one end and a U-shaped groove at the other end, housing a load sensing component and a data transmission connector electrically connected to the load sensing component. The electronic control function cover includes a cover and an electronic control integration terminal located inside the cover. The electronic control integration terminal includes at least a main control unit, a wireless communication unit, and an energy storage unit, and has a data transmission interface adapted to the data transmission connector, which is electrically connected to the main control unit.

[0008] As the preferred embodiment of this application: The electronic control integrated terminal includes an integrated cavity, in which the main control unit, wireless communication unit and energy storage module are placed. The data transmission interface is a socket interface led out from the bottom of the integrated cavity. The integrated cavity can be inserted into the hollow cavity of the load sensing substrate, thereby connecting the data transmission interface with the data transmission connector.

[0009] As the preferred embodiment of this application: The hollow cavity inner wall of the load sensing substrate is provided with a first limiting member extending from the bottom to the opening end. At the same time, a second limiting member adapted to the first limiting member is provided on both sides of the electronic control integrated terminal. The movement trajectory of the electronic control integrated terminal can be limited by the cooperation of the second limiting member and the first limiting member, so as to align and plug the data transmission interface with the data transmission connector.

[0010] As the preferred embodiment of this application: The load sensing substrate is also equipped with a parameter storage unit, which contains pre-set oil well monitoring configuration parameters. The data transmission connector is electrically connected to the parameter storage unit.

[0011] As the preferred embodiment of this application: The well monitoring configuration parameters include at least the well number, wireless configuration parameters, and load sensor calibration parameters.

[0012] As the preferred embodiment of this application: The data transmission connector is a coaxial transmission connector, and the data transmission interface is a coaxial docking port that matches the coaxial transmission connector. The two adopt a coaxial mating structure of the center conductor and the outer shielding layer to transmit digital signals.

[0013] As the preferred embodiment of this application: The coaxial transmission connector is a 3.5mm four-level TRRS coaxial audio plug, which includes a tip power section, a first annular conductive section, a second annular conductive section, and an outer sleeve conductive section.

[0014] As the preferred embodiment of this application: The specific structure of the four conductive segments of the coaxial transmission connector electrically connected to the load sensing component and the parameter storage unit is as follows: The power supply section at the tip leads out a power line to simultaneously power the load sensing component and the parameter storage unit. The first annular conductive section leads out a load signal line, which is electrically connected to the analog signal output terminal of the load sensing component. The second annular conductive section leads out a storage data line, which is connected to the data communication pin of the parameter storage unit. The outer sleeve conductive section leads out a common ground line. The analog signal ground line of the load sensing component and the communication ground line of the parameter storage unit are shorted together and then connected to this common ground line.

[0015] As the preferred embodiment of this application: The parameter storage unit uses the 1-Wire serial communication protocol to output parameters.

[0016] As the preferred embodiment of this application: The load sensing substrate and the electronically controlled functional cover are detachably connected by a connector.

[0017] Compared with existing technologies, the advantages of this application are: (1) The dynamometer body is designed as two separate parts: a load sensing substrate that is not prone to failure and an electronic control function cover that is prone to failure. The two parts are detachably sealed and connected. In maintenance operations such as repair or charging, or experimental testing operations, it is not necessary to disassemble the entire dynamometer. Only the electronic control function cover and the load sensing substrate need to be separated. This solves the shortcomings of traditional whole-machine disassembly, such as low disassembly and assembly efficiency, high safety risk and easy damage to the optical rod. In addition, this design can ensure that the load sensing substrate is always reliably connected to the optical rod, avoiding the poor contact and pressure deviation caused by repeated disassembly and assembly in the traditional method, and ensuring the continuity and accuracy of dynamometer data acquisition.

[0018] (2) This solution connects the load sensing substrate and the electrical control function cover through a data transmission connector and data transmission interface in a quick plug-in electrical connection. No additional cables need to be laid. On the one hand, it simplifies the wiring structure, and on the other hand, it facilitates electrical disassembly and assembly. It completely avoids problems such as pin bending and cable breakage caused by improper plugging and unplugging angles or excessive force when using traditional cable connections. It is particularly suitable for the operation scenario of frequent disassembly and assembly in oilfields, and improves the reliability and stability of the dynamometer body.

[0019] (3) This solution presets the oil well monitoring configuration parameters in the parameter storage unit of the load sensing substrate, rather than in the traditional electronic control integrated structure. The advantages of this design include: First, the electronic control function cover can be adapted to any load sensing substrate, rather than the traditional binding relationship, which provides convenience for the subsequent maintenance and testing of the electronic control function cover, improves the flexibility of the dynamometer body, and ensures the continuity of data transmission; Second, after any electronic control function cover is powered on in combination with the load sensing substrate, it can automatically obtain the oil well monitoring configuration parameters from the parameter storage unit of the load sensing substrate for automatic configuration, without the need for on-site personnel to re-enter them using mobile phones or computers. This not only greatly shortens the replacement time, but also fundamentally eliminates the problem of data "freezing" or inability to upload due to parameter input errors (such as entering the wrong server IP or password), which greatly improves the operation and maintenance efficiency of the oilfield Internet of Things. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the modular split-type dynamometer provided by this utility model.

[0021] Figure 2 This is a cross-sectional exploded view of the structure provided by this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the load sensing substrate and the electronic control function cover provided by this utility model.

[0023] Figure 4 This is a schematic diagram of the main structure of the load sensing substrate provided by this utility model.

[0024] Figure 5 This is a schematic diagram of the main structure of the electrically controlled cover provided by this utility model.

[0025] Figure 6 This is a structural schematic diagram of the 3.5mm coaxial audio plug provided by this utility model.

[0026] Figure Labels Load sensing substrate; 11-U-shaped slot; 121-Elastic strain gauge; 122-Circuit board; 123-Conversion circuit; 12-Data transmission connector; 13-First limiting element; 20-Electrically controlled functional cover; 210-Integrated cavity; 211-Main control unit; 212-Wireless communication unit; 213-Energy storage module; 22-Solar integrated component; 23-Data transmission interface; 24-Second limiter. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope and application of the present invention.

[0028] Example 1:

[0029] This embodiment provides a modular, split-type dynamometer, including a load sensing base 10 and an electronic control function cover 20. The load sensing base 10 and the electronic control function cover 20 are detachably and sealedly assembled to form the dynamometer body via bolts, clamps, or other connecting components. Bolt connection is preferred. Figure 1-3 As shown.

[0030] The load sensing base 10 is a hollow box structure integrally forged from high-strength alloy steel (such as 40CrNiMoA). One end of this hollow box structure is open, and the other end has a U-shaped slot 11. The opening communicates with the hollow cavity for docking with the electronic control cover 20. The U-shaped slot 11 is compatible with the optical rod, allowing it to be inserted and fixed to the optical rod via a corresponding locking mechanism. It is understood that the U-shaped slot 11 can be customized according to the diameter of the optical rod. A load sensing component is installed inside the load sensing base 10 for sensing light. The load sensing component, which is a mature existing structure, is used to detect the minute deformation caused by the rod load in this embodiment. Specifically, it includes an elastic strain gauge 121, a circuit board 122, and a conversion circuit 123. The elastic strain gauge 121 is located at one end of the load sensing substrate 10 near the U-shaped slot 11. The circuit board 122 and the conversion circuit 123 are located at the bottom of the hollow cavity and electrically connected to the elastic strain gauge 121. Simultaneously, a data transmission connector 12, electrically connected to the circuit board 122 of the load sensing component, is provided at the bottom of the hollow cavity. Figure 2 As shown, the collected load data can be output through the data transmission connector 12. In this embodiment, the elastic strain gauge 121, circuit board 122 and conversion circuit 123 are designed to be fully sealed and waterproof and are located inside the load sensing substrate 10. The overall performance is stable and not prone to abnormalities. After the data transmission connector 12 is connected to the circuit board 122, it extends into the hollow cavity of the load sensing substrate 10. It can be seen that this embodiment sets a load sensing component that is not prone to abnormalities inside the load sensing substrate 10, laying the foundation for the infrequent disassembly and assembly of the load sensing substrate 10 in the future.

[0031] The electrically controlled cover 20 includes a cover body and an electronically controlled integrated terminal located inside the cover body. Preferably, a solar integrated module 22 is also provided on the outside of the cover body. The outer shell of the electrically controlled cover 20 can be made of materials such as engineering plastics or nylon. Figure 2As shown; the size of the cover is adapted to the opening size of the load sensing base 10, and threaded holes are provided at corresponding positions of the two for subsequent detachable fixing by bolts; the electronic control integration terminal includes at least a main control unit 211, a wireless communication unit 212, and an energy storage unit. Of course, if necessary, it may also include a displacement sensor, and the electronic control integration terminal is provided with a data transmission interface 23 adapted to the data transmission connector 12. The data transmission interface 23 is electrically connected to the main control unit 211; in this embodiment, the electronic control integration terminal is an existing structure of the existing dynamometer, which integrates the main control unit 211, the acceleration sensor chip, and the signal... The system includes an amplifier circuit, an A / D conversion circuit, a battery voltage regulator module, and a wireless transmission module; the wireless communication unit 212 includes at least one of an NB-IoT module, a 4GCat.1 module, a LoRa radio frequency module, and a Beidou satellite communication module, used to transmit oil well power indicator data to a remote monitoring platform; the energy storage unit is a power module, preferably with an energy storage compartment at the electronic control integration terminal, and the energy storage power supply is installed in the energy storage compartment. The solar integrated component 22 converts solar energy into electrical energy and stores it in the power module. The structure, principle, and layout of the solar integrated component 22 are all existing structures, and will not be described in detail in this embodiment.

[0032] In use, after the electronic control function cover 20 is sealed and closed with the load sensing base 10, the data transmission interface 23 can communicate with the data transmission connector 12 inside the load sensing base 10 to obtain load data to the main control unit 211. That is, in this embodiment, the load sensing base 10 and the electronic control function cover 20 are quickly plugged and plugged into an electrical connection through the data transmission connector 12 and the data transmission interface 23, without the need to lay additional cables. On the one hand, this simplifies the wiring structure, and on the other hand, it facilitates electrical disassembly and assembly. It completely avoids the problems of pin bending and cable breakage caused by improper insertion and removal angles or excessive force when using traditional cable connections, thus improving the reliability and stability of the dynamometer body.

[0033] In summary, this embodiment designs the dynamometer body as two separate parts: a load sensing base 10, which is less prone to failure, and an electronic control function cover 20, which is more prone to failure. Both are detachably assembled with a mechanical seal. At the same time, they are quickly plugged in and electrically connected via a data transmission connector 12 and a data transmission interface 23. This design eliminates the need to disassemble the entire dynamometer during maintenance operations such as repair or charging, or during experimental testing. Only the electronic control function cover needs to be mechanically and electrically separated from the load sensing base 10. This solves the shortcomings of traditional whole-machine disassembly, such as low disassembly and assembly efficiency, high safety risks, and easy damage to the optical rod. It also ensures that the load sensing base 10 is always reliably connected to the optical rod, guaranteeing the continuity and accuracy of dynamometer data acquisition. In addition, the plugged-in electrical connection facilitates disassembly and assembly.

[0034] As a preferred embodiment, the integrated electrical control unit includes an integrated cavity 210, in which the main control unit 211, the wireless communication unit 212, and the energy storage module 213 are placed. The data transmission interface 23 is a socket interface led out from the bottom of the integrated cavity 210. The integrated cavity 210 can be plugged into the hollow cavity of the load sensing substrate 10, thereby connecting the data transmission interface 23 to the data transmission connector 12. Specifically, the main control unit 211, the wireless communication unit 212, and the energy storage module 213 are enclosed inside the integrated cavity 210, and the data transmission interface 23 is set at the bottom of the integrated cavity 210 as a socket interface. After the load sensing substrate 10 and the electrical control functional cover 20 are sealed and connected, the socket interface can accurately connect to the data transmission connector 12.

[0035] As a preferred embodiment, the hollow cavity inner wall of the load sensing substrate 10 is provided with a first limiting member 13 extending from the bottom to the opening end. At the same time, a second limiting member 24 adapted to the first limiting member 13 is provided on both sides of the electronic control integrated terminal. The movement trajectory of the electronic control integrated terminal can be limited by the cooperation of the second limiting member 24 and the first limiting member 13, so as to align and plug the data transmission interface 23 with the data transmission connector 12.

[0036] A first limiting member 13 is provided on the inner wall of the hollow cavity of the load sensing substrate 10. This first limiting member 13 is preferably a limiting groove, a limiting guide rail, or a combination of both. When it is a combination of both, the limiting groove and the limiting guide rail are respectively located at different positions inside the hollow cavity. Figure 4 As shown, to ensure the uniqueness of the insertion of the electronic control integrated terminal 20, the limiting groove or limiting guide rail is integrally forged with the load sensing base 10; second limiting members 24 are provided on both sides of the electronic control integrated terminal, the structure of which is adapted to the first limiting member 13, preferably a slide rail adapted to the limiting groove, and / or a slide groove adapted to the limiting guide rail, such as... Figure 5 As shown, the slide rail or slide groove is integrally formed with the integrated cavity 210; the slide rail and the limiting groove slide together, or the slide groove and the limiting guide rail slide together, both of which play the same role as the drawer track in limiting the trajectory, ensuring that the data transmission interface 23 and the data transmission connector 12 are accurately aligned and plugged in, avoiding misalignment and damage to the data transmission interface 23 and the data transmission connector 12; the above is a preferred specific implementation structure of this embodiment. It can be understood that, if necessary, the setting body of the limiting groove and the track can also be interchanged.

[0037] As a preferred embodiment, the load sensing substrate 10 is further provided with a parameter storage unit, which is pre-loaded with oil well monitoring configuration parameters. In this embodiment, the oil well monitoring configuration parameters preferably include at least the well number, wireless configuration parameters, and load sensor calibration parameters. Of course, if necessary, it may also include parameters required for conventional dynamometer configuration such as stroke and stroke rate. The data transmission connector 12 is electrically connected to the parameter storage unit. When the data transmission interface 23 is connected to the data transmission connector 12, the main control unit 211 in the electronic control function cover 20 first reads all the oil well monitoring configuration parameters in the parameter storage unit through the standardized electrical interface (storage data line) in the data transmission interface 23. The main control unit 211 automatically completes the initial registration of the wireless communication unit 212, the setting of sampling parameters and time synchronization, and the calibration of the load sensing components according to the read configuration parameters, thereby realizing the automatic configuration of the dynamometer. The whole process does not require manual connection to a handheld terminal to input parameters, realizing "blind plug and play".

[0038] In this embodiment, the parameter storage component is a non-volatile storage device, which does not lose data after power failure, thus meeting the usage requirements of field oil well equipment to ensure that parameters are not lost during power failure; specifically, it can be either EEPROM or Flash memory chip.

[0039] Specifically, in this embodiment, the oil well monitoring configuration parameters are preset in the parameter storage unit of the load sensing base 10, rather than in the traditional electronic control integrated structure. The advantages of this design include: First, the electronic control functional cover 20 can be adapted to any load sensing base 10, rather than in the traditional binding relationship. The current electronic control functional cover 20 can be replaced and taken back to the laboratory for firmware upgrades, fault reproduction, or comparative experiments, which provides convenience for the maintenance, testing, research and development, and field operation and maintenance of the electronic control functional cover 20, improves the flexibility of the dynamometer body, and ensures the continuity of data transmission. Second, after any electronic control functional cover 20 is powered on in combination with the load sensing base 10, it can automatically obtain the oil well monitoring configuration parameters from the parameter storage unit of the load sensing base 10 and perform automatic configuration. It can continue to work without any field calibration, which greatly shortens the replacement time and fundamentally eliminates the problem of data "freezing" or inability to upload caused by human parameter input errors (such as entering the wrong server IP or password), which greatly improves the operation and maintenance efficiency of the oilfield Internet of Things.

[0040] It should be noted that the oil well monitoring configuration parameters in this embodiment include load sensor calibration parameters. These parameters are used to calibrate the performance of the load sensing part. Traditionally, they are set at the electronic control end. If the electronic control function cover 20 is replaced, the load sensor calibration parameters corresponding to the load sensing part will be lost. Therefore, in this embodiment, they are written into the parameter storage unit as oil well monitoring configuration parameters. When any electronic control function cover 20 is replaced, the load sensor calibration parameters can be read from the parameter storage unit to ensure effective calibration of the current load sensing part.

[0041] As a preferred embodiment, the data transmission connector 12 is a coaxial transmission connector, and the data transmission interface 23 is a coaxial docking port that matches the coaxial transmission connector. The two adopt a coaxial mating structure of the center conductor and the outer shielding layer to transmit digital signals.

[0042] In this embodiment, the preferred coaxial transmission connector is a 3.5mm quad-pole TRRS coaxial audio plug (also known as a 3.5mm audio connector / audio plug), which includes a pointed power section, a first annular conductive section, a second annular conductive section, and an outer sleeve conductive section, such as... Figure 6 As shown; the 3.5mm audio plug has a coaxial cylindrical structure, consisting of metal contacts and an insulating spacer ring. Signal transmission is achieved through physical contact. Its mechanical structure is simple, and its insertion / removal life can reach 5000 to 10000 times or more, far exceeding the insertion / removal life of conventional multi-core rectangular connectors. This fully meets the operational needs of frequent replacement of the electrical control function cover 20 in oilfields. It can be understood that the data transmission interface 23 is a 3.5mm audio socket corresponding to the 3.5mm audio plug. This structure is an existing structure with IP67 or IPX7 protection rating. Furthermore, the socket's spring contacts are gold-plated, resulting in low contact resistance (≤30mΩ) and a withstand voltage of up to 500V. With AC insulation resistance ≥100MΩ, it can work reliably for a long time in the humid and dusty environment of the oil field. In addition, the 3.5mm audio plug and corresponding socket occupy a small panel area, which makes it easy to integrate into the corresponding positions of the load sensing base 10 and the electrical control function cover 20 without expanding the dynamometer body structure, which is beneficial to the installation and deployment of the dynamometer in the narrow space of the suspension device.

[0043] In this embodiment, the specific structure for the four conductive segments of the coaxial transmission connector electrically connecting to the load sensing component and the parameter storage unit is as follows: the tip power supply segment leads out a power line, which simultaneously supplies power to the load sensing component and the parameter storage unit. The power supply voltage comes from the energy storage unit of the electronic control function cover 20; the first annular conductive segment leads out a load signal line, which is electrically connected to the analog signal output terminal of the load sensing component to output the load sensing analog signal; the second annular conductive segment leads out a storage data line, which is connected to the data communication pin of the parameter storage unit to read and write the oil well configuration parameter data; the outer sleeve conductive segment leads out a common ground wire. The analog signal ground wire of the load sensing component and the communication ground wire of the parameter storage unit are shorted to each other and then connected to the common ground wire to realize the common ground transmission of the sensing analog signal and the storage serial communication signal; this structure can realize the output of the load sensing analog signal and the oil well configuration parameter data through a single 3.5mm audio plug, without the need for additional wiring, thus simplifying the circuit structure.

[0044] Preferably, in this embodiment, the connection points between each segment of the plug and the corresponding cable adopt a molded mesh tail (strain release structure) design, which can effectively buffer the stress during insertion, removal and pulling, and further improve the stability and reliability of the plug-in electrical connection.

[0045] In this embodiment, the parameter storage unit preferably adopts the 1-Wire serial communication protocol, and the parameter output is completed through two paths: the storage data line and the common ground line.

[0046] The specific operating principle of this embodiment includes: The limit groove and the track are used to guide the electronic control function cover 20 into the hollow cavity of the load sensing base 10, and ensure that the data transmission connector 12 and the data transmission interface 23 are precisely connected to realize the power supply of the dynamometer body; and ensure that the dynamometer is effectively and stably installed on the light rod through the U-shaped slot 11 and the corresponding locking structure.

[0047] During initial configuration, the operator configures the well monitoring configuration parameters into the main control unit 211 of the electronic control function cover 20. Simultaneously, the well monitoring configuration parameters are written into the parameter storage unit of the load sensing base 10 through the electrical connection of the data transmission connector 12 and the data transmission interface 23. Normally, the well monitoring configuration parameters are fixed parameters unless the RTU changes the parameters. When the parameters are changed, the adjusted well monitoring configuration parameters can be written. At this time, the load sensing base 10 carries the well monitoring configuration parameters and the load sensing part.

[0048] During normal operation, the main control unit 211 acquires load data through the data transmission connector 12 and the data transmission interface 23, and transmits it remotely through the wireless communication unit 212.

[0049] When the electronic control function cover 20 needs maintenance, repair, or testing, after shutdown, the current electronic control function cover 20 is removed from the load sensing base 10, and then replaced with another electronic control function cover 20. Of course, if the maintenance is completed on-site, the current electronic control function cover 20 can be continued to be installed on the load sensing base 10. In this embodiment, the main control module is preferably an STM32L4 series low-power chip. After the electronic control function cover 20 is installed and the data transmission connector 12 and data transmission interface 23 are connected, the dynamometer is powered on. After power-on, the current electronic control function cover 20 needs to acquire the oil well monitoring configuration parameters for automatic configuration. Specifically: S1. The main control unit 211 initializes the IO port, pulls the DATA line high, and sends a single-bus reset pulse; S2. After detecting a pulse in the parameter storage unit, a read command (0xAA) is sent. S3. Read in sequence the pre-written oil well monitoring configuration parameters such as: well number (ASCII code), stroke (floating point), number of strokes (floating point), wireless network card SSID, password and load sensor calibration parameters; S4. The main control unit 211 initializes the 4G / Wi-Fi module by calling AT commands based on the read SSID and password, and connects to the designated server; S5. Set the range and sampling trigger threshold of the accelerometer based on the number of strokes read; S6. Perform parameter calibration on the load sensing unit based on the read load sensor calibration parameters; S7. After configuration, turn on the green indicator light on the dynamometer housing to enter the normal working cycle.

[0050] As can be seen, in this embodiment, when the electronic control cover 20 is replaced or reinstalled, no handheld terminal intervention is required. After tightening the screws and plugging in the 3.5mm audio plug and socket, the main control unit 211 will automatically execute the above configuration steps S1-S7. Even if the server IP of the well changes, it is only necessary to write the configuration parameters to the parameter storage unit separately through the configuration tool. All subsequent replacement electronic control covers 20 inherit the configuration parameters, ensuring parameter consistency throughout the entire life cycle.

[0051] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various improvements without departing from this utility model, and these improvements should also be considered within the scope of protection of this utility model. These improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of the claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A modular, split-type dynamometer, characterized in that, Include: The instrument comprises a load sensing substrate and an electronically controlled cover, which are detachably and sealed together to form the main body of the dynamometer. The load sensing substrate is a hollow box structure containing a load sensing component and a data transmission connector electrically connected to the load sensing component. The electronically controlled cover includes a cover and an electronically controlled integrated terminal located inside the cover. The electronically controlled integrated terminal includes at least a main control unit, a wireless communication unit, and an energy storage unit, and has a data transmission interface adapted to the data transmission connector, which is electrically connected to the main control unit.

2. The modular split-type dynamometer according to claim 1, characterized in that: The electronic control integrated terminal includes an integrated cavity, in which the main control unit, wireless communication unit and energy storage module are placed. The data transmission interface is a socket interface led out from the bottom of the integrated cavity. The integrated cavity can be inserted into the hollow cavity of the load sensing substrate, thereby connecting the data transmission interface with the data transmission connector.

3. The modular split-type dynamometer according to claim 2, characterized in that: The hollow cavity inner wall of the load sensing substrate is provided with a first limiting member extending from the bottom to the opening end. At the same time, a second limiting member adapted to the first limiting member is provided on both sides of the electronic control integrated terminal. The movement trajectory of the electronic control integrated terminal can be limited by the cooperation of the second limiting member and the first limiting member, so as to align and plug the data transmission interface with the data transmission connector.

4. The modular split-type dynamometer according to claim 1, characterized in that: The load sensing substrate is also equipped with a parameter storage unit, which contains pre-set oil well monitoring configuration parameters. The data transmission connector is electrically connected to the parameter storage unit.

5. The modular split-type dynamometer according to claim 4, characterized in that: The well monitoring configuration parameters include at least the well number, wireless configuration parameters, and load sensor calibration parameters.

6. The modular split-type dynamometer according to claim 4, characterized in that: The data transmission connector is a coaxial transmission connector, and the data transmission interface is a coaxial docking port that matches the coaxial transmission connector. The two adopt a coaxial mating structure of the center conductor and the outer shielding layer to transmit digital signals.

7. The modular split-type dynamometer according to claim 6, characterized in that: The coaxial transmission connector is a 3.5mm four-level TRRS coaxial audio plug, which includes a tip power section, a first annular conductive section, a second annular conductive section, and an outer sleeve conductive section.

8. The modular split-type dynamometer according to claim 7, characterized in that: The specific structure of the four conductive segments of the coaxial transmission connector electrically connected to the load sensing component and the parameter storage unit is as follows: The power supply section at the tip leads out a power line to simultaneously power the load sensing component and the parameter storage unit. The first annular conductive section leads out a load signal line, which is electrically connected to the analog signal output terminal of the load sensing component. The second annular conductive section leads out a storage data line, which is connected to the data communication pin of the parameter storage unit. The outer sleeve conductive section leads out a common ground line. The analog signal ground line of the load sensing component and the communication ground line of the parameter storage unit are shorted together and then connected to this common ground line.

9. The modular split-type dynamometer according to claim 8, characterized in that: The parameter storage unit uses the 1-Wire serial communication protocol to output parameters.

10. The modular split-type dynamometer according to claim 1, characterized in that: The load sensing substrate and the electronically controlled functional cover are detachably connected by a connector.

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