Rotary valve pulser dual battery power monitoring control device

Abstract

The application discloses a rotating valve pulser double-battery power supply monitoring control device, which comprises a function circuit module, a first battery module, a second battery module and a rotating valve pulser connected with the function circuit module, wherein the first battery module and the second battery module are used for supplying power to the function circuit module; the function circuit module comprises a controller, a system power supply module, a field effect tube, a reference voltage source connected with the controller and a current-voltage monitoring device connected with the controller; the field effect tube is connected with the controller and is used for controlling the power supply switching of the function circuit module; and the system power supply module is connected with the controller and is used for controlling the power-on and power-off of the controller. In the rotating valve pulser double-battery power supply monitoring control device, the first battery module and the second battery module are switched to supply power, and are disconnected in time when the voltage is abnormal, so that the damage of downhole instruments caused by working under abnormal voltage is avoided, and the failure rate of the rotating valve pulser is effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of downhole measurement while drilling systems, and in particular to a dual-battery powered monitoring and control device for a rotary valve pulser. Background Technology

[0002] In downhole measurement while drilling systems, rotary valve pulsers are well adapted to drilling fluid environments and drilling conditions. By adapting rotary valve pulsers to measurement probes, the engineering applicability of the instrument can be improved and the instrument failure rate can be reduced, hence their widespread use.

[0003] However, with the widespread use of rotary valve pulsers, in order to ensure the downhole working time of the instrument, the dual-battery parallel power supply mode is mainly adopted. This mode causes the downhole batteries to consume power at the same time, and it is difficult to predict the remaining power of the dual batteries after use. The voltage is unstable, which makes the rotary valve pulser easy to be damaged.

[0004] Therefore, how to reduce the failure rate of rotary valve pulsers is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-battery powered monitoring and control device for rotary valve pulsers to reduce the failure rate of rotary valve pulsers.

[0006] To achieve the above objectives, the present invention provides a dual-battery-powered monitoring and control device for a rotary valve pulser, comprising a functional circuit module, a first battery module, a second battery module, and a rotary valve pulser connected to the functional circuit module, wherein the first battery module and the second battery module are used to power the functional circuit module;

[0007] The functional circuit module includes a controller, a system power supply module, a field-effect transistor, a reference voltage source connected to the controller, and a current and voltage monitoring device connected to the controller; the field-effect transistor is connected to the controller and is used to control the power supply switching of the functional circuit module; the system power supply module is connected to the controller and is used to control the power supply and disconnection of the controller;

[0008] When the first battery module supplies power to the functional circuit module, if the current and voltage monitoring device detects that the voltage of the first battery module is less than or equal to a first preset voltage value and this continues for a first preset time, the controller controls the field-effect transistor to switch from being powered by the first battery module to being powered by the second battery module. The first preset voltage value is the voltage of the reference voltage source.

[0009] When the second battery module supplies power to the functional circuit module, the current and voltage monitoring device detects that the voltage of the second battery module is less than the second preset voltage value, which is the voltage of the reference voltage source. When this voltage remains below the second preset value for a second preset time, the pulse control signal output by the measuring probe is disconnected. The rotary valve pulser is powered by the second battery module to reset the rotor of the rotary valve pulser to the fully open state. After the rotor is reset, the controller controls the power supply module of the system to stop working, and the second battery module stops supplying power.

[0010] Optionally, in the above-mentioned dual-battery power supply monitoring and control device for rotary valve pulsers, the functional circuit module further includes an accelerometer connected to the controller. When the accelerometer collects a first preset vibration difference value with a frequency in the range of 4Hz-10Hz and continues for more than a third preset time, the controller outputs an open vibration switch, and the system power supply module starts working. When the vibration difference value collected by the accelerometer is less than the first preset vibration difference value and the duration exceeds a fourth preset time, the system power supply module stops working.

[0011] Optionally, in the above-mentioned dual-battery power supply monitoring and control device for rotary valve pulser, when the voltage and current monitoring device detects that the operating current exceeds the first preset current value, the controller controls the system power supply module to stop working. After the system power supply module stops working for a fifth preset time, the controller controls the system power supply module to start supplying power. The first preset current value is the upper limit of the operating current.

[0012] When the voltage and current monitoring device detects that the operating current exceeds the second preset current value and continues for a sixth preset time, the controller controls the system power supply module to stop working. After the system power supply module stops working for a seventh preset time, the controller controls the system power supply module to start supplying power. The second preset current value is the current value when there is resistance.

[0013] Optionally, the above-mentioned dual-battery powered monitoring and control device for the rotary valve pulser further includes:

[0014] The circuit instrument compartment includes an instrument compartment body and a mounting frame that can be slidably disposed within the instrument compartment body, and the functional circuit module is mounted on the mounting frame.

[0015] The instrument includes a connector body and a plug. One end of the connector body is connected to the instrument compartment body, and the other end is connected to the plug. The plug is electrically connected to the functional circuit module through a first wire. The instrument compartment body is provided with a socket, which is connected to the functional circuit module through a second wire. The plug and the socket are connected to the two ends of the circuit module after being connected in parallel with the first battery module and the second battery module, thus achieving communication with the functional circuit module.

[0016] Optionally, in the above-mentioned dual-battery powered monitoring and control device for rotary valve pulsers, the circuit instrument compartment further includes an elastic limiting component and a mounting base fixed to the bottom of the instrument compartment body. The mounting base is provided with a slide rail and an upward-opening mounting keyway. The elastic limiting component is installed in the mounting keyway and is used to engage the mounting base and the mounting frame. The mounting frame is provided with a sliding groove that slides with the slide rail so that the mounting frame can slide along the openings at both ends of the circuit instrument compartment.

[0017] Optionally, in the above-mentioned dual-battery powered monitoring and control device for rotary valve pulsers, the bottom of the mounting bracket is provided with a bottom keyway;

[0018] The elastic limiting component includes a guide rod, a positioning slide key, and an elastic element with one end installed at the bottom of the mounting keyway and the other end connected to the positioning slide key. The bottom end of the guide rod is installed at the bottom end of the mounting keyway, and the positioning slide key is sleeved on the outside of the guide rod and can slide along the guide rod. When the elastic limiting component is in a free state, the end of the positioning slide key away from the elastic element protrudes out of the mounting keyway and extends into the bottom keyway.

[0019] Along the sliding direction of the mounting bracket, one side of the positioning slide key is an inclined guide surface, and the other side is a limiting surface that can engage with the bottom keyway. The inclined guide surface gradually moves towards the limiting surface in a direction away from the elastic element.

[0020] Optionally, the above-mentioned dual-battery powered monitoring and control device for rotary valve pulse generator also includes a pre-tightening positioning component. The pre-tightening positioning component includes a sleeve and a pre-tightening elastic element with one end located inside the sleeve and the other end connected to the connector body. The end of the inner wall of the instrument compartment body is provided with a mounting groove for mounting the sleeve, and the end of the mounting bracket abuts against the sleeve.

[0021] Optionally, in the above-mentioned dual-battery power supply monitoring and control device for rotary valve pulsers, at least two elastic limiting components are provided along the sliding direction of the mounting bracket, and the elastic limiting components correspond one-to-one with the bottom keyway.

[0022] Optionally, in the above-mentioned dual-battery powered monitoring and control device for rotary valve pulsers, the mounting bracket is provided with a mounting slot for mounting the functional circuit module, and the functional circuit module is encapsulated in the mounting slot with epoxy resin.

[0023] Optionally, in the above-mentioned dual-battery powered monitoring and control device for rotary valve pulsers, the connector body is threadedly connected to the instrument compartment body, the outer wall of the connector body is provided with an external thread, and the end of the external thread on the connector body is provided with a limiting platform that abuts against the end of the instrument compartment body.

[0024] In the above technical solution, the rotary valve pulser dual-battery power supply monitoring and control device provided by the present invention includes a functional circuit module, a first battery module, a second battery module, and a rotary valve pulser connected to the functional circuit module. The first battery module and the second battery module are used to power the functional circuit module. The functional circuit module includes a controller, a system power supply module, a field-effect transistor, a reference voltage source connected to the controller, and a current and voltage monitoring device connected to the controller. The field-effect transistor is connected to the controller and is used to control the power supply switching of the functional circuit module. The system power supply module is connected to the controller and is used to control the power supply and disconnection of the controller. When the first battery module supplies power to the functional circuit module, the current and voltage monitoring device detects the first battery module supplying power to the second battery module. When the voltage of a battery module is less than or equal to a first preset voltage value for a first preset time, the controller switches the field-effect transistor from being powered by the first battery module to being powered by the second battery module. The first preset voltage value is the voltage of the reference voltage source. When the second battery module supplies power to the functional circuit module, the current and voltage monitoring device detects that the voltage of the second battery module is less than the second preset voltage value. When the second preset voltage value is the voltage of the reference voltage source for a second preset time, the pulse control signal output by the measuring probe is disconnected. The rotary valve pulser is powered through the second battery module to reset the rotor of the rotary valve pulser to the fully open state. After the rotor is reset, the controller controls the system power supply module to stop working, and the second battery module stops supplying power.

[0025] As described above, in the dual-battery power supply monitoring and control device for the rotary valve pulser provided in this application, the first battery module and the second battery module switch power supply and disconnect in time when the voltage is abnormal, so as to avoid the downhole instrument being damaged when working under abnormal voltage, and effectively reduce the failure rate of the rotary valve pulser. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a partially assembled rotary valve pulser dual-battery powered monitoring and control device provided in an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the mating connector provided in an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of the instrument compartment body in the circuit instrument compartment provided in an embodiment of the present invention;

[0030] Figure 4 A cross-sectional view of the positioning slide key provided in an embodiment of the present invention;

[0031] Figure 5 This is a cross-sectional view of the mounting bracket provided in an embodiment of the present invention;

[0032] Figure 6 This is a bottom view of the mounting bracket provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the pre-tightening positioning assembly provided in an embodiment of the present invention;

[0034] Figure 8 This is a cross-sectional view of the positioning slide key and guide rod assembly provided in an embodiment of the present invention;

[0035] Figure 9 This is a schematic cross-sectional view of the circuit instrument compartment and mounting frame assembly provided in an embodiment of the present invention;

[0036] Figure 10 This is a schematic diagram of the functional architecture of the functional circuit module provided in the embodiment of the present invention;

[0037] Figure 11 This is a schematic diagram of the installation of the dual-battery powered monitoring and control device for the rotary valve pulser provided in an embodiment of the present invention.

[0038] in Figure 1-11In the middle: 1-Mating connector, 2-Circuit instrument compartment, 3-Pre-tightening positioning assembly, 4-Mounting bracket, 5-Functional circuit module, 6-Connector body, 7-First sealing ring, 8-Plug, 9-Instrument compartment body, 10-Mounting base, 11-Mounting keyway, 12-Positioning slide key, 13-Guide rod, 14-Elastic element, 15-Intermediate guide hole, 16-Angled guide surface, 17-Lower end face, 18-Pre-tightening elastic element, 19-Sleeve, 20-Bracket body, 21- - Slide rail, 22- Bottom keyway, 23- Mounting slot, 24- Limiting surface, 25- Controller, 26- Data storage module, 27- Communication conversion module, 28- System power supply module, 29- Temperature sensor, 30- Current and voltage monitoring device, 31- Field effect transistor, 32- Accelerometer, 33- Reference voltage source, 34- First battery module, 35- Second battery module, 36- Rotary valve pulser, 37- Socket, 38- Second sealing ring. Detailed Implementation

[0039] The core of this invention is to provide a dual-battery powered monitoring and control device for rotary valve pulsers to reduce the failure rate of rotary valve pulsers.

[0040] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0041] Please refer to Figures 1 to 11 .

[0042] In one specific embodiment, the rotary valve pulser dual-battery power supply monitoring and control device provided in this invention includes a functional circuit module 5, a first battery module 34, a second battery module 35, and a rotary valve pulser 36 connected to the functional circuit module 5.

[0043] Specifically, such as Figure 10 and Figure 11 As shown, the first battery module 34 and the second battery module 35 supply power to the functional circuit module 5. The functional circuit module 5 includes a controller 25, a reference voltage source 33, a system power supply module 28, a field-effect transistor 31, and a current and voltage monitoring device 30 connected to the controller 25. The field-effect transistor 31 is connected to the controller 25 and is used to control the power supply switching of the functional circuit module 5. Specifically, the controller 25 is the core structure of the functional circuit module 5 and uses an 8-bit low-power microcontroller PIC18F4431. The system power supply module 28 uses an LT3470 voltage regulator chip. The current and voltage monitoring device 30 uses a MAX4080 to monitor current and voltage data. The field-effect transistor 31 uses an NTD20P06LT as an electronic switch to control the switching function between the first battery module 34 and the second battery module 35. The reference voltage source 33 is connected to the controller 25.

[0044] The system power supply module 28 is connected to the controller 25 and is used to control the power supply and disconnection of the controller 25. When the first battery module 34 supplies power to the functional circuit module 5, if the current and voltage monitoring device 30 detects that the voltage of the first battery module 34 is less than the first preset voltage value and this condition persists for a first preset time, the controller 25 controls the field-effect transistor 31 to switch from being powered by the first battery module 34 to being powered by the second battery module 35. When the second battery module 35 supplies power to the functional circuit module 5, if the current and voltage monitoring device 30 detects that the voltage of the second battery module 35 is less than the second preset voltage value and this condition persists for a second preset time, the pulse control signal output by the measuring probe is disconnected, and the rotary valve pulser 36 is powered through the second battery module 35 to reset the rotor of the rotary valve pulser 36 to the fully open state. After the rotor is reset, the controller 25 controls the system power supply module 28 to stop working, and the second battery module 35 stops supplying power. The first preset voltage value and the second preset voltage value are the voltages of the reference voltage source 33.

[0045] The functional circuit module 5 is installed between the rotary valve pulser 36 and the battery module group formed by the first battery module 34 and the second battery module 35. It communicates via a bus connection through a plug 8 and a socket 37, specifically an aviation plug and an aviation socket. The aviation plug is mounted on the end face of the connector body 6 with screws. The aviation plug is connected to the functional circuit module 5 in the circuit instrument compartment 2 via an internal flexible wire. The first sealing ring 7 seals the connection between the connector body 6 and the instrument compartment body 9.

[0046] The conventional downhole lithium battery is a regulated power supply with a normal voltage greater than 28V. Based on the voltage regulation characteristics of lithium batteries, the first preset voltage value can be 22V-24V, specifically 24V. The first preset time is 30 seconds-150 seconds, specifically 120 seconds. Specifically, the field-effect transistor 31 controls the battery switching function to be set to unidirectional switching to prevent repeated switching actions in the well.

[0047] The second preset voltage value can be 22V-24V, specifically 24V, and the second preset time can be 30 seconds-150 seconds, specifically 120 seconds.

[0048] As can be seen from the above description, in the dual-battery power supply monitoring and control device for the rotary valve pulser provided in this application, the first battery module 34 and the second battery module 35 switch power supply and disconnect in time when the voltage is abnormal, so as to avoid the downhole instrument being damaged when working under abnormal voltage, and prevent the rotor of the rotary valve pulser 36 from being blocked due to power disconnection, causing complex situations such as pump blockage, and effectively reducing the failure rate of the rotary valve pulser 36.

[0049] The functional circuit module 5 also includes an accelerometer 32 connected to the controller 25. When the accelerometer 32 collects a first preset vibration difference value, specifically, the first preset vibration difference value can be 100mg-300mg, which can prevent the instrument from malfunctioning due to excessive sensitivity caused by handling operations if the value is too small, and prevent the instrument from not working downhole due to excessive sensitivity if the value is too large, specifically 200mg, with a frequency in the range of 4Hz-10Hz, and lasts for more than a third preset time, specifically, the third preset time can be 5 seconds-15 seconds. Under the premise of ensuring effective identification of downhole vibration, the third preset time should be selected as small as possible, and it is also necessary to prevent abnormal start-up caused by short-term abnormal vibration impact. The controller 25 outputs to turn on the vibration switch, and the system power supply module 28 starts working. When the vibration difference value collected by the accelerometer 32 is less than the first preset difference value, and the duration exceeds the fourth preset time, the system power supply module 28 stops working, effectively improving the reliability of the vibration switch execution. The fourth preset time can be between 10 and 30 seconds. While ensuring the rotary valve pulser functions normally, the fourth preset time should be chosen to be as small as possible. It is also necessary to prevent the rotary valve pulser from abnormally stopping during normal operation due to a short-term decrease in vibration value. Specifically, the fourth preset time is 10 seconds. Specifically, the accelerometer 32 uses an ADXL203 for dual-axis acceleration acquisition to serve as the monitoring value for the vibration switch function.

[0050] Functional circuit module 5 also includes a reference voltage source 33 and a temperature sensor 29, with the temperature sensor 29 being an AD590K. Both the reference voltage source 33 and the temperature sensor 29 are connected to the controller 25. The reference voltage source 33 is an ADR02. The temperature sensor 29 collects operating temperature data, and the data storage 26 stores parameters such as battery voltage, current, temperature, and vibration during downhole operation for use in surface analysis.

[0051] Since vibrations in the 4Hz-10Hz frequency range are relatively sensitive to the circulation frequency of downhole drilling fluid during pump operation, using a vibration difference of 200mg as the judgment value can reduce the problem of frequent activation of the vibration switch during instrument handling and weak vibration signals such as small drills due to an excessively small judgment value. At the same time, it can also reduce the problem of the downhole vibration switch not activating due to an excessively large judgment value.

[0052] When the voltage and current monitoring device detects that the operating current exceeds the first preset current value, the controller 25 controls the system power supply module 28 to stop working. After the system power supply module 28 has stopped working for a fifth preset time, the controller 25 controls the system power supply module 28 to start supplying power. The first preset current value is the upper limit of the operating current, which can be 2.5A-5A, specifically 3.5A. After the voltage and current monitoring device detects that the operating current exceeds the limit, the controller 25 shuts down the system power supply module 28 to prevent the rotary valve pulser 36 from being damaged due to excessive operating current.

[0053] The fifth preset time can be 30 seconds.

[0054] When the voltage and current monitoring device detects that the operating current exceeds the second preset current value and remains so for a sixth preset time, the controller 25 controls the system power supply module 28 to stop working to prevent damage to the instrument caused by the continuous increase in operating current due to the rotary valve pulser 36 being blocked. After the system power supply module 28 has stopped working for a seventh preset time, the controller 25 controls the system power supply module 28 to start supplying power.

[0055] Specifically, the second preset current value is the current value when there is resistance, which can be set to 2.7A. The sixth preset time can be 5-15 seconds, specifically 10 seconds. The seventh preset time can be 30-60 seconds, specifically 30 seconds. The upper limit of the working current (first preset current value) is set to 3.5A and the resistance current (second preset current value) is set to 2.7A. Current detection is used to prevent damage to the downhole instruments caused by abnormal operation.

[0056] The functional circuit module 5 also includes a data storage module 26 connected to the controller 25. The data storage module 26 uses a 25LC1024 to store parameters such as battery voltage, operating current, operating temperature and vibration.

[0057] The functional circuit module 5 also includes a communication conversion module 27 connected to the controller 25. The communication conversion module 27 uses MAX3471 as the RS-485 / RS-422 communication chip.

[0058] This application improves the downhole operating time and reliability of the rotary valve pulser powered by dual batteries by adding vibration switches and abnormal reset functions, and setting up monitoring and storage of downhole voltage and current data. Through downhole operating parameter monitoring and abnormal switch reset functions, this application employs a downhole control method based on downhole vibration, temperature, voltage, and current monitoring. This enables the storage and analysis of downhole monitoring parameters, effectively improving the battery utilization rate of the dual-battery power supply, reducing manufacturing costs, lowering the instrument's failure rate, and ultimately reducing operating costs.

[0059] The dual-battery powered monitoring and control device for the rotary valve pulse generator also includes a circuit instrument compartment 2 and a connector 1. The circuit instrument compartment 2 includes an instrument compartment body 9 and a mounting bracket 4 that can be slidably installed within the instrument compartment body 9. The functional circuit module 5 is installed on the mounting bracket 4, specifically, the functional circuit module 5 is installed on the support plate body 20 of the mounting bracket 4. The mounting bracket 4 is mainly used to install the functional circuit module 5. The connector 1 includes a connector body 6 and a plug 8. One end of the connector body 6 is connected to the instrument compartment body 9, and the other end is connected to the plug 8. The plug 8 is electrically connected to the functional circuit module 5 through a first wire. The instrument compartment body 9 is provided with a socket 37, which is connected to the functional circuit module 5 through a second wire. The plug 8 and socket 37 are connected in parallel with the first battery module 34 and the second battery module 35, and then the two ends of the circuit module are connected to achieve conduction with the functional circuit module 5. Specifically, the first wire and the second wire are preferably both flexible wires.

[0060] The circuit instrument compartment 2 also includes an elastic limiting component and a mounting base 10 fixed inside the bottom of the instrument compartment body 9. The mounting base 10 is provided with a slide rail 21 and an upward-opening mounting keyway 11. The elastic limiting component is installed in the mounting keyway 11 and is used to engage the mounting base 10 and the mounting frame 4. The mounting frame 4 is provided with a sliding groove that slides in conjunction with the slide rail 21, so that the mounting frame 4 can slide along the openings at both ends of the circuit instrument compartment 2. The installation and positioning of the mounting frame 4 are achieved through the elastic limiting component.

[0061] like Figure 5 As shown, the mounting bracket 4 is provided with a mounting slot 23 for mounting the functional circuit module 5, and the functional circuit module 5 is encapsulated in the mounting slot 23 with epoxy resin.

[0062] like Figure 5 and Figure 6 As shown, the mounting bracket 4 has a bottom keyway 22 at the bottom.

[0063] like Figure 8 As shown, the elastic limiting assembly includes a guide rod 13, a positioning slide key 12, and an elastic element 14, one end of which is installed at the bottom of the mounting keyway 11 and the other end of which is connected to the positioning slide key 12. Specifically, the elastic element 14 can be a spring, preferably a helical spring. Figure 9As shown, the bottom end of the guide rod 13 is installed at the bottom end of the mounting keyway 11. The positioning slide key 12 is sleeved on the outside of the guide rod 13 and can slide along the guide rod 13. When the elastic limiting member is in the free state, the end of the positioning slide key 12 away from the elastic member 14 protrudes out of the mounting keyway 11, and the end extends into the bottom keyway 22. Along the sliding direction of the mounting bracket 4, one side of the positioning slide key 12 is a sloping guide surface 16, and the other side is a limiting surface 24 that can engage with the bottom keyway 22. The sloping guide surface 16 gradually moves towards the limiting surface 24 in the direction away from the elastic member 14. Specifically, the bottom end of the guide rod 13 and the bottom end of the bottom spring 14 are fixed in the keyway 11. The positioning slide key 12 cooperates with the guide rod 13 through the middle guide hole 15, so that the positioning slide key 12 can only move up and down along the guide rod 13. Specifically, as shown... Figure 4 As shown, the positioning slide key 12 is entirely planar except for one inclined guide surface 16, and the angle between the inclined guide surface 16 and the lower end surface 17 is less than 45°.

[0064] To improve stability after assembly, preferably, at least two elastic limiting components are provided along the sliding direction of the mounting frame 4, and the elastic limiting components correspond one-to-one with the bottom keyway 22.

[0065] like Figure 7 The rotary valve pulser dual-battery powered monitoring and control device shown also includes a pre-tightening positioning assembly 3. The pre-tightening positioning assembly 3 includes a sleeve 19 and a pre-tightening elastic element 18, one end of which is located inside the sleeve 19 and the other end connected to the connector body 6. Specifically, the pre-tightening elastic element 18 can be a pre-tightening spring, which is compressed during use. The inner wall end of the instrument compartment body 9 is provided with a mounting groove 23 for mounting the sleeve 19, and the end of the mounting bracket 4 abuts against the sleeve 19. The pre-tightening positioning sleeve 3 is installed between the mating connector 1 and the circuit instrument compartment 2. On the side closer to the mating connector 1, a pre-tightening force is applied to the pre-tightening elastic element 18 through the mating connector 1. On the side closer to the circuit instrument compartment 2, the pre-tightening force is applied to the end face of the mounting bracket 4 through the end face of the sleeve 19. The pre-tightening positioning assembly 3 is installed between the mating connector 1 and the circuit instrument compartment 2 to fix the mounting bracket 4. Simultaneously, the pre-tightening elastic element 18 can reduce the impact of downhole vibration and shock.

[0066] like Figure 1 As shown, during specific assembly, the mounting bracket 4 slides against the mounting base 10 via the slide rail 21. The mounting bracket 4 slides towards the mating joint 1. When the end face of the mounting bracket 4 contacts the inclined guide surface 16 of the positioning slide key 12, the inclined guide surface 16 is subjected to a downward component force, causing the positioning slide key 12 to slide down along the guide rod 13, while compressing the bottom elastic element 14. The mounting bracket 4 continues to slide towards the mating joint 1. When the positioning slide key 12 enters the bottom keyway 22 near the plane 24 on the side of the mating joint 1, under the action of the bottom spring 14, the positioning slide key 12 pushes into the bottom keyway 22. The positioning slide key 12 near the limiting surface 24 of the mating joint 1 can restrict the mounting bracket 4 from sliding in the opposite direction of the mating joint 1, thereby playing a limiting role.

[0067] Next, the mounting bracket 4 continues to slide towards the mating connector 1, allowing the positioning slide key 12 to be fully inserted into the bottom keyway 22. Simultaneously, the pre-tightening positioning component 3 secures the mounting bracket 4. When disassembling the mounting bracket 4, because the positioning slide key 12 is near the plane 16 of the mating connector 1, which restricts sliding in the opposite direction, the mating connector 1 and the pre-tightening positioning component 3 must be disassembled first. Then, the mounting bracket 4 continues to slide towards the mating connector 1. Once the positioning slide key 12 is completely disengaged from the bottom keyway 22, the mounting bracket 4 can slide out of the mounting base 10. This application adopts a modular integrated structure, integrating limiting, positioning, and fixing functions through the positioning slide key 12, the pre-tightening positioning component 3, and guide rails, thus improving the convenience and stability of device assembly.

[0068] For ease of assembly and disassembly, preferably, the connector body 6 is threadedly connected to the instrument compartment body 9, the outer wall of the connector body 6 is provided with external threads, and the end of the external thread on the connector body 6 is provided with a limiting platform that abuts against the end of the instrument compartment body 9.

[0069] The plug 8 is mounted on the end face of the connector body 6 by screws, and the plug 8 is connected to the functional circuit module 5 in the circuit instrument compartment 2 by internal flexible wires.

[0070] The terms "first" and "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units may include steps or units not listed, but rather steps or units not listed.

[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-battery powered monitoring and control device for a rotary valve pulser, characterized in that, It includes a functional circuit module (5), a first battery module (34), a second battery module (35), and a rotary valve pulser (36) connected to the functional circuit module (5). The first battery module (34) and the second battery module (35) are used to power the functional circuit module (5). The functional circuit module (5) includes a controller (25), a system power supply module (28), a field-effect transistor (31), a reference voltage source (33) connected to the controller (25), and a current and voltage monitoring device (30) connected to the controller (25); the field-effect transistor (31) is connected to the controller (25) and is used to control the power supply switching of the functional circuit module (5); the system power supply module (28) is connected to the controller (25) and is used to control the power supply and disconnection of the controller (25); When the first battery module (34) supplies power to the functional circuit module (5), when the current and voltage monitoring device (30) detects that the voltage of the first battery module (34) is less than or equal to a first preset voltage value and lasts for a first preset time, the controller (25) controls the field-effect transistor (31) to switch from being powered by the first battery module (34) to being powered by the second battery module (35), and the first preset voltage value is the voltage of the reference voltage source (33); When the second battery module (35) supplies power to the functional circuit module (5), the current and voltage monitoring device (30) detects that the voltage of the second battery module (35) is less than the second preset voltage value. The second preset voltage value is the voltage of the reference voltage source (33). When the voltage remains below the second preset value for a second preset time, the pulse control signal output by the measuring probe is disconnected. The rotary valve pulser (36) is powered on by the second battery module (35) to reset the rotor of the rotary valve pulser (36) to the fully open state. After the rotor is reset, the controller (25) controls the power supply module (28) to stop working, and the second battery module (35) stops supplying power.

2. The rotary valve pulse generator dual-battery powered monitoring and control device according to claim 1, characterized in that, The functional circuit module (5) also includes an accelerometer (32) connected to the controller (25). When the accelerometer (32) collects a first preset vibration difference value with a frequency in the range of 4Hz-10Hz and lasts for more than a third preset time, the controller (25) outputs an open vibration switch and the system power supply module (28) starts working. When the vibration difference value collected by the accelerometer (32) is less than the first preset vibration difference value and lasts for more than a fourth preset time, the system power supply module (28) stops working.

3. The rotary valve pulse generator dual-battery powered monitoring and control device according to claim 1, characterized in that, When the current and voltage monitoring device detects that the working current exceeds the first preset current value, the controller (25) controls the system power supply module (28) to stop working. After the system power supply module (28) stops working for a fifth preset time, the controller (25) controls the system power supply module (28) to start supplying power. The first preset current value is the upper limit of the working current. When the current and voltage monitoring device detects that the working current exceeds the second preset current value and continues for a sixth preset time, the controller (25) controls the system power supply module (28) to stop working. After the system power supply module (28) stops working for a seventh preset time, the controller (25) controls the system power supply module (28) to start supplying power. The second preset current value is the current value when there is resistance.

4. The dual-battery powered monitoring and control device for the rotary valve pulser according to any one of claims 1-3, characterized in that, Also includes: The circuit instrument compartment (2) includes an instrument compartment body (9) and a mounting frame (4) that can be slidably disposed within the instrument compartment body (9). The functional circuit module (5) is mounted on the mounting frame (4). The connector (1) includes a connector body (6) and a plug (8). One end of the connector body (6) is connected to the instrument compartment body (9), and the other end is connected to the plug (8). The plug (8) is electrically connected to the functional circuit module (5) through a first wire. The instrument compartment body (9) is provided with a socket (37). The socket (37) is connected to the functional circuit module (5) through a second wire. The plug (8) and the socket (37) are respectively connected to the two ends of the circuit module after the first battery module (34) and the second battery module (35) are connected in parallel, so as to achieve the connection with the functional circuit module (5).

5. The rotary valve pulse generator dual-battery powered monitoring and control device according to claim 4, characterized in that, The circuit instrument compartment (2) also includes an elastic limiting component and a mounting base (10) fixed inside the bottom of the instrument compartment body (9). The mounting base (10) is provided with a slide rail (21) and an upward-opening mounting keyway (11). The elastic limiting component is installed in the mounting keyway (11). The elastic limiting component is used to engage the mounting base (10) and the mounting frame (4). The mounting frame (4) is provided with a sliding groove that slides with the slide rail (21) so that the mounting frame (4) can slide along the opening direction at both ends of the circuit instrument compartment (2).

6. The dual-battery powered monitoring and control device for the rotary valve pulser according to claim 5, characterized in that, The mounting bracket (4) is provided with a bottom keyway (22); The elastic limiting component includes a guide rod (13), a positioning slide key (12), and an elastic element (14) with one end installed at the bottom of the mounting keyway (11) and the other end connected to the positioning slide key (12). The bottom end of the guide rod (13) is installed at the bottom end of the mounting keyway (11). The positioning slide key (12) is sleeved on the outside of the guide rod (13) and can slide along the guide rod (13). When the elastic limiting component is in a free state, the end of the positioning slide key (12) away from the elastic element (14) protrudes out of the mounting keyway (11) and extends into the bottom keyway (22). Along the sliding direction of the mounting bracket (4), one side of the positioning slide key (12) is an inclined guide surface (16), and the other side is a limiting surface (24) that can engage with the bottom keyway (22). The inclined guide surface (16) gradually moves away from the elastic member (14) and towards the limiting surface (24).

7. The dual-battery powered monitoring and control device for the rotary valve pulser according to claim 6, characterized in that, It also includes a pre-tightening positioning component (3), which includes a sleeve (19) and a pre-tightening elastic element (18) with one end located inside the sleeve (19) and the other end connected to the connector body (6). The inner wall end of the instrument compartment body (9) is provided with a mounting groove (23) for mounting the sleeve (19), and the end of the mounting bracket (4) abuts against the sleeve (19).

8. The dual-battery powered monitoring and control device for the rotary valve pulser according to claim 6, characterized in that, At least two elastic limiting components are provided along the sliding direction of the mounting bracket (4), and the elastic limiting components correspond one-to-one with the bottom keyway (22).

9. The dual-battery powered monitoring and control device for the rotary valve pulser according to claim 4, characterized in that, The mounting bracket (4) is provided with a mounting slot (23) for mounting the functional circuit module (5), and the functional circuit module (5) is encapsulated in the mounting slot (23) by epoxy resin.

10. The dual-battery powered monitoring and control device for the rotary valve pulser according to claim 4, characterized in that, The connector body (6) is threadedly connected to the instrument compartment body (9). The outer wall of the connector body (6) is provided with an external thread, and the end of the external thread on the connector body (6) is provided with a limiting platform that abuts against the end of the instrument compartment body (9).

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