Coal mine near-bit MWD short sub structure and its assembling method

Abstract

The application provides a near-bit MWD short section structure for coal mines and an assembling method thereof. The structure comprises an outer tube, an electronic bin framework, a wireless transmitting short section, a battery assembly, a gamma measurement module, an inclination measurement module and a measurement circuit board. The electronic bin framework is fixed in the outer tube, the battery assembly, the gamma module and the inclination module are arranged in a ring shape, near-bit trajectory and geological parameter measurement are realized, and space occupation is reduced. One end of the wireless transmitting short section is connected to the outer tube through a straight thread, and the other end is connected to a screw motor through a taper thread. The wireless transmitting short section transmits measurement data through wireless signals, and realizes measurement data transmission across the screw motor. The intrinsically safe circuit design ensures that it meets the coal mine explosion-proof requirements. The assembling method comprises electronic component installation, wireless transmitting short section connection, transmitting antenna assembly and protective cover installation, and the shock resistance and signal stability are improved through shock absorption sealing pads and sealing materials. The application has a compact structure, meets the requirements of small-diameter drilling in coal mines, realizes high-precision, real-time measurement and stable data transmission.

Description

Technical Field

[0001] This invention belongs to the technical field of underground drilling measurement instruments in coal mines, and relates to a short section structure for near-bit drilling measurement in coal mines and its assembly method. Background Technology

[0002] Measurement while drilling (MSWL) technology is a key component of directional drilling equipment in coal mines. It is primarily used for real-time monitoring of borehole trajectory, geological parameters, and drilling engineering parameters. Using this data, operators can adjust the drilling rig's trajectory promptly based on changes during the drilling process, ensuring the borehole accurately reaches the designated location. This is particularly important in coal mining, especially when traversing complex geological strata, as precise control of the borehole path helps improve mining efficiency and safety. However, existing MSWL technologies have some significant limitations.

[0003] Traditional underground measurement-while-drilling (MWD) systems in coal mines mostly employ a non-magnetic drill rod mounted behind the screw motor, typically 5 to 8 meters away from the drill bit. A major problem with this design is measurement lag. As the drilling rig advances, the measurement point is significantly further from the actual position of the drill bit, resulting in the acquired trajectory data failing to reflect the drill bit's actual working status in real time. This lag leads to untimely trajectory adjustments, potentially causing the borehole to deviate from the designed route, increasing operational risks and engineering complexity. This is especially problematic in areas with frequently changing coal and rock strata, where existing systems struggle to provide accurate real-time data.

[0004] Currently, near-bit measurement-while-drilling (MRWW) devices have been developed in the surface oil industry, but they are mostly used in large-diameter boreholes in oil drilling. These devices are characterized by large diameters and long lengths, and cannot be directly applied to small-diameter directional boreholes in coal mines. The main reasons are: first, the near-bit MWD devices developed in the oil industry do not meet the special explosion-proof requirements of coal mines; second, their generally large diameters and excessive lengths do not meet the requirements of small-diameter directional boreholes in coal mines, seriously affecting the build-up rate of the screw motor. Summary of the Invention

[0005] In view of this, the purpose of this invention is to solve the problem that the measurement points of existing underground measurement-while-drilling systems in coal mines are lagging behind and cannot measure borehole trajectories and geological parameters in a timely manner, and to provide a near-bit measurement-while-drilling section structure for coal mines and its assembly method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A near-bit measurement-while-drilling (MRD) sub structure for coal mines includes an outer tube, a wireless transmission sub, a battery assembly, a gamma measurement module, an inclination measurement module, and a measurement circuit board. One end of the wireless transmission sub is connected to one end of the outer tube via a straight thread, and the other end of the wireless transmission sub has a tapered thread for connecting a screw motor. The other end of the outer tube has a connecting thread for connecting the drill bit. An electronic chamber frame is housed inside the outer tube. One end of the electronic chamber frame is connected to the connecting thread end face of the outer tube, and the other end is connected to the wireless transmission sub, thereby fixing it inside the outer tube.

[0008] On the outer circumference of the electronic compartment frame, there is a waist-shaped groove on one side and three evenly distributed arc-shaped grooves on the other side. There is a water passage hole in the middle of the electronic compartment frame that is eccentric to the center of the outer tube. The battery assembly is waist-shaped and fixedly installed in the waist-shaped groove. The gamma measurement module, tilt measurement module, and measurement circuit board are respectively installed in the three arc-shaped grooves, so that the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board are arranged in a ring on the electronic compartment frame.

[0009] The wireless transmitter section has a communication hole for installing connecting wires between the wireless transmitter section and the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board; the connection circuit between the wireless transmitter section, battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board is an intrinsically safe circuit; the measurement data of the gamma measurement module and tilt measurement module are transmitted wirelessly through the wireless transmitter section.

[0010] Furthermore, the wireless transmitting section includes a wireless transmitting connector, a protective cover, and a transmitting antenna assembly; the wireless transmitting connector has a through hole in the middle that communicates with the water passage hole of the electronic compartment frame, and the wireless transmitting connector is threaded to one end of the outer tube; the communication hole is located inside the wireless transmitting connector, the transmitting antenna assembly is located in the annular groove, and the protective cover is fitted onto the wireless transmitting connector, covering the transmitting antenna assembly inside; the protective cover has multiple strip-shaped holes evenly distributed around its circumference as channels for wireless signal transmission.

[0011] Furthermore, the protective cover has a fixing ring at the end away from the outer tube. The fixing ring consists of two halves. The fixing ring is snapped onto the wireless transmitter connector, and the protective cover is fitted onto the fixing ring and supported by the fixing ring.

[0012] Furthermore, the communication hole includes a transverse hole arranged along the axial direction and an oblique hole arranged at an angle. An aviation plug assembly is provided in the oblique hole, and the aviation plug assembly is used for electrical connection and sealing of the oblique hole.

[0013] Furthermore, a gap is provided between the transmitting antenna assembly and the protective cover, and the gap is filled with sealing material.

[0014] Furthermore, the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board are all provided with vibration damping sealing gaskets in the radial direction and at both ends to prevent vibration at the bottom of the hole from damaging the electronic components.

[0015] Preferably, the outer tube, wireless transmission sub-section, battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board are all made of non-magnetic steel to reduce magnetic interference and ensure the accuracy of measurement data.

[0016] An assembly method for a near-bit measurement-while-drilling (MRD) substructure for coal mines, as described above, includes the following steps:

[0017] Step 1, Preparation before assembly: Check the integrity of components: Ensure that all components, including the outer tube, wireless transmission sub, battery assembly, gamma measurement module, tilt measurement module, measurement circuit board, electronic housing frame, transmitting antenna assembly, protective cover, retaining ring and vibration damping gasket, are complete and undamaged; prepare the necessary tools, torque wrench, thread sealant, insulating tape, and sealing material;

[0018] Step 2, Electronic component installation: Insert the electronic housing frame into the outer tube, so that one end of it fits against the threaded end face of the outer tube, and the other end is connected to the wireless transmission sub.

[0019] Battery assembly installation: Embed the waist-shaped battery assembly into the waist-shaped groove on the electronic compartment frame. Install the gamma measurement module, tilt measurement module, and measurement circuit board into the three evenly distributed arc-shaped grooves on the electronic compartment frame, and arrange them in a ring. Use wires to connect the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board in sequence. Install vibration damping sealing gaskets on the radial and end sides of the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board to ensure secure fixing.

[0020] Step 3, Installation of the wireless transmitter sub: Connect the wireless transmitter sub to one end of the outer tube via the straight thread and tighten it to the specified torque with a torque wrench; pass the communication wire through the communication hole inside the wireless transmitter sub and connect it to the aviation plug assembly; insert the aviation plug assembly into the angled hole of the wireless transmitter sub and tighten it to seal the angled hole and ensure protective performance.

[0021] Step 4, Installation of the transmitting antenna assembly and protective cover: Embed the transmitting antenna assembly into the annular groove of the wireless transmitting section; snap the two halves of the retaining ring onto the wireless transmitting connector, and fix the protective cover onto the retaining ring. Slide the protective cover onto the wireless transmitting connector so that the transmitting antenna assembly is completely covered within it.

[0022] Step 5, sealing: Fill the gap between the transmitting antenna assembly and the protective cover with sealing material to ensure the stability of wireless signal transmission and protection performance.

[0023] The beneficial effects of this invention are as follows:

[0024] 1. This invention places the measurement sub less than 0.5 meters from the drill bit tip, significantly reducing the distance between the measurement point and the drill bit. Compared to traditional measurement-while-drilling systems that need to be installed 5 to 8 meters away from the drill bit in a non-magnetic drill rod, this invention can monitor the trajectory and geological parameters in real time during drilling, significantly reducing the problem of measurement data lag. This helps operators adjust the borehole trajectory more accurately, improves the automation and intelligent control precision of directional drilling, and thus enhances the safety and efficiency of underground drilling operations in coal mines.

[0025] 2. This invention significantly reduces the diameter and length of the measurement-while-drilling sub by optimizing the structure of the outer tube and electronic compartment frame, enabling it to adapt to the confined borehole space in coal mines. Simultaneously, the small-diameter design of this invention also reduces the impact on the screw motor's directional drilling capability, ensuring the smooth operation of the directional drilling equipment.

[0026] 3. This invention achieves a compact structure by arranging the gamma measurement module, tilt measurement module, measurement circuit board, and battery assembly in a ring around the outside of the electronic compartment frame, making full use of the internal space. This design not only effectively reduces the overall size of the equipment but also improves system integration. Simultaneously, the ring-arranged battery assembly increases battery capacity, extends the equipment's runtime, and ensures that the measurement-while-drilling system can operate continuously and stably during long-term drilling operations.

[0027] 4. This invention employs an intrinsically safe circuit design to ensure the safety of the measurement-while-drilling device in the complex environment of coal mines. The intrinsically safe circuit effectively prevents sparks or overheating from occurring when electrical equipment malfunctions, thereby avoiding underground explosions in coal mines and improving the safety of the equipment in explosive environments.

[0028] 5. This invention employs a wireless transmitting section structure, solving the problem of transmitting measurement data across the screw motor. It enables the real-time wireless transmission of data collected by the gamma measurement module and tilt measurement module to the receiving section behind the screw motor. The transmitting antenna assembly is embedded in the annular groove of the section and protected by a protective cover and sealing material, ensuring the stability and reliability of the wireless signal transmission. This optimized design not only provides waterproofing but also reduces the risk of damage caused by vibration and friction from coal and rock strata.

[0029] 6. The present invention has vibration damping sealing gaskets at both ends of the battery assembly, gamma measurement module, tilt measurement module and measurement circuit board, which effectively absorbs the vibration and shock during drilling, protects the internal precision electronic components and extends the service life of the equipment.

[0030] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is a schematic diagram of the overall structure of the near-bit measurement while drilling section for coal mines in this invention.

[0033] Figure 2 This is a cross-sectional schematic diagram of the electronic compartment in this invention.

[0034] Reference numerals: 1-Outer tube; 2-Electronics compartment; 201-Electronics compartment frame; 202-Battery assembly; 203-Water passage hole; 204-Battery mounting base; 205-Gamma measurement module; 206-Vibration damping pad; 207-Combined vibration damping pad; 208-Annular vibration damping pad; 209-Tilt measurement module; 210-Vibration damping pad; 211-Measurement circuit board; 212-Measurement circuit board mounting base; 3-Wireless transmission sub; 301-Straight thread; 302-Communication hole; 303-Transmitting antenna assembly; 304-Retaining ring; 305-Tapered thread. Detailed Implementation

[0035] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0037] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0038] Please refer to Figures 1-2 This is a near-bit measurement while drilling (MRD) sub structure for coal mines, comprising an outer tube 1, a wireless transmission sub 3, a battery assembly 202, a gamma measurement module 205, an inclination measurement module 209, and a measurement circuit board 211. One end of the wireless transmission sub 3 is connected to one end of the outer tube 1 via a straight thread 301, and the other end of the wireless transmission sub 3 is provided with a tapered thread 305 for connecting a screw motor. The other end of the outer tube 1 is provided with a connecting thread for connecting a drill bit. An electronic chamber frame 201 is provided inside the outer tube 1, with one end of the electronic chamber frame 201 connected to the connecting thread end face of the outer tube 1 and the other end connected to the wireless transmission sub 3, thereby fixing it inside the outer tube 1. An electronic chamber 2 is formed between the electronic chamber frame 201 and the inner wall of the outer tube 1.

[0039] On the outer circumference of the electronic compartment frame 201, there is a waist-shaped groove on one side and three evenly distributed arc-shaped grooves on the other side. The water passage hole 203 is eccentric to the center of the outer tube 1 in the middle of the electronic compartment frame 201. The battery assembly 202 is waist-shaped and is fixedly installed in the waist-shaped groove by the battery fixing seat 204. The measuring circuit board 211 is installed in one of the arc-shaped grooves by the measuring circuit board mounting seat 212. The gamma measuring module 205 and the tilt measuring module 209 are installed in the other two arc-shaped grooves respectively, so that the battery assembly 202, the gamma measuring module 205, the tilt measuring module 209, and the measuring circuit board 211 are arranged in a ring on the electronic compartment frame 201.

[0040] The wireless transmitter subsection 3 has a communication hole 302 for installing connecting wires between the wireless transmitter subsection 3 and the battery assembly 202, the gamma measurement module 205, the tilt measurement module 209, and the measurement circuit board 211. The connection circuit between the wireless transmitter subsection 3, the battery assembly 202, the gamma measurement module 205, the tilt measurement module 209, and the measurement circuit board 211 is an intrinsically safe circuit. The measurement data of the gamma measurement module 205 and the tilt measurement module 209 are transmitted wirelessly through the wireless transmitter subsection 3.

[0041] Among them, the outer tube, wireless transmission sub-section, battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board are all made of non-magnetic steel.

[0042] The wireless transmitter section 3 includes a wireless transmitter connector, a protective cover, and a transmitting antenna assembly 303. The wireless transmitter connector has a through hole in the middle that communicates with the water passage hole 203 of the electronic compartment frame 201. The wireless transmitter connector is threaded to one end of the outer tube 1. A communication hole 302 is located inside the wireless transmitter connector, and the transmitting antenna assembly 303 is located in an annular groove. The protective cover is fitted onto the wireless transmitter connector, covering the transmitting antenna assembly 303. Multiple strip-shaped holes are evenly distributed around the circumference of the protective cover, serving as channels for wireless signal transmission.

[0043] A retaining ring 304 is provided at the end of the protective cover away from the outer tube 1. The retaining ring 304 is composed of two halves. The retaining ring 304 is snapped onto the wireless transmitter connector. The protective cover is fitted onto the retaining ring 304 and is supported by the retaining ring 304.

[0044] The communication hole 302 includes a transverse hole arranged along the axial direction and an oblique hole arranged at an angle. An aviation plug assembly is disposed in the oblique hole. The aviation plug assembly is used for electrical connection and to seal the oblique hole.

[0045] A gap is provided between the transmitting antenna assembly 303 and the protective cover, and the gap is filled with sealing material.

[0046] The battery assembly 202, gamma measurement module 205, tilt measurement module 209, and measurement circuit board 211 are respectively provided with vibration damping pads 206, 210, combined vibration damping pads 207, and annular vibration damping pads 208 in the radial direction and at both ends to prevent vibration at the bottom of the hole from damaging the electronic components.

[0047] An assembly method for a near-bit measurement-while-drilling sub-structure for coal mines, as described above, includes the following steps:

[0048] Step 1, Pre-assembly preparation: Check component integrity: Ensure all components, including outer tube 1, wireless transmission sub-section 3, battery assembly 202, gamma measurement module 205, tilt measurement module 209, measurement circuit board 211, electronic compartment frame 201, transmitting antenna assembly 303, protective cover, retaining ring 304, and vibration damping gasket, are complete and undamaged; prepare the necessary tools, torque wrench, thread sealant, insulating tape, and sealing material;

[0049] Step 2, Electronic component installation: Insert the electronic housing frame 201 into the outer tube 1, so that one end of it fits against the connecting thread end face of the outer tube 1, and the other end is connected to the wireless transmission subsection 3.

[0050] Installation of battery assembly 202: Embed the waist-shaped battery assembly 202 into the waist-shaped groove on the electronic compartment frame 201. Install the gamma measurement module 205, tilt measurement module 209, and measurement circuit board 211 into the three evenly distributed arc-shaped grooves on the electronic compartment frame 201, and arrange them in a ring. Use wires to connect the battery assembly 202, gamma measurement module 205, tilt measurement module 209, and measurement circuit board 211 in sequence. Install vibration damping sealing gaskets on the radial side and both ends of the battery assembly 202, gamma measurement module 205, tilt measurement module 209, and measurement circuit board 211 to ensure secure fixing.

[0051] Step 3, Installation of the wireless transmitter sub-section 3: Connect the wireless transmitter sub-section 3 to one end of the outer tube 1 through the straight thread 301, and tighten it to the specified torque with a torque wrench; pass the communication wire through the communication hole 302 inside the wireless transmitter sub-section 3 and connect it to the aviation plug assembly; insert the aviation plug assembly into the angled hole of the wireless transmitter sub-section 3 and tighten it to seal the angled hole and ensure protection performance.

[0052] Step 4, Installation of transmitting antenna assembly 303 and protective cover: Embed transmitting antenna assembly 303 into the annular groove of wireless transmitting section 3; snap the two halves of retaining ring 304 onto wireless transmitting connector, and fix the protective cover onto retaining ring 304. Slide the protective cover onto wireless transmitting connector so that transmitting antenna assembly 303 is completely covered within it.

[0053] Step 5, sealing treatment: Fill the gap between the transmitting antenna assembly 303 and the protective cover with sealing material to ensure the stability of wireless signal transmission and protection performance.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A method for assembling a near-bit measurement-while-drilling (MWD) substructure for coal mines, characterized in that, The near-bit measurement-while-drilling (MRD) sub structure for coal mines includes an outer tube, a wireless transmission sub, a battery assembly, a gamma measurement module, an inclination measurement module, and a measurement circuit board. One end of the wireless transmission sub is connected to one end of the outer tube via a straight thread, and the other end of the wireless transmission sub has a tapered thread for connecting a screw motor. The other end of the outer tube has a connecting thread for connecting the drill bit. An electronic chamber frame is installed inside the outer tube. One end of the electronic chamber frame is connected to the connecting thread end face of the outer tube, and the other end is connected to the wireless transmission sub, thereby fixing it inside the outer tube. On the outer circumference of the electronic compartment frame, there is a waist-shaped groove on one side and three evenly distributed arc-shaped grooves on the other side. There is a water passage hole in the middle of the electronic compartment frame that is eccentric to the center of the outer tube. The battery assembly is waist-shaped and fixedly installed in the waist-shaped groove. The gamma measurement module, tilt measurement module, and measurement circuit board are respectively installed in the three arc-shaped grooves, so that the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board are arranged in a ring on the electronic compartment frame. The wireless transmitter section has a communication hole for installing connecting wires between the wireless transmitter section and the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board; the connection circuit between the wireless transmitter section, battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board is an intrinsically safe circuit; the measurement data of the gamma measurement module and tilt measurement module are transmitted wirelessly through the wireless transmitter section. The wireless transmitting section includes a wireless transmitting connector, a protective cover, and a transmitting antenna assembly. The wireless transmitting connector has a through hole in the middle that communicates with the water passage hole of the electronic compartment frame. The wireless transmitting connector is threaded to one end of the outer tube. The communication hole is located inside the wireless transmitting connector, and the transmitting antenna assembly is located in the annular groove. The protective cover is fitted onto the wireless transmitting connector, covering the transmitting antenna assembly inside. The protective cover has multiple strip-shaped holes evenly distributed around its circumference, serving as channels for wireless signal transmission. The protective cover has a fixing ring at the end away from the outer tube. The fixing ring consists of two halves and is snapped onto the wireless transmitter connector. The protective cover is fitted onto the fixing ring and supported by the fixing ring. The communication port includes a horizontal hole arranged along the axial direction and an oblique hole arranged at an angle. An aviation plug assembly is provided in the oblique hole. The aviation plug assembly is used for electrical connection and sealing of the oblique hole. There is a gap between the transmitting antenna assembly and the protective cover, and the gap is filled with sealing material. The battery assembly, gamma measurement module, tilt measurement module, and measuring circuit board are all equipped with vibration damping sealing gaskets in the radial direction and at both ends to prevent vibration at the bottom of the hole from damaging the electronic components; the structural components of the outer tube, wireless transmission sub, battery assembly, gamma measurement module, tilt measurement module, and measuring circuit board are all made of non-magnetic steel. Assembly includes the following steps: Step 1, Preparation before assembly: Check the integrity of components: Ensure that all components, including the outer tube, wireless transmission sub, battery assembly, gamma measurement module, tilt measurement module, measurement circuit board, electronic housing frame, transmitting antenna assembly, protective cover, retaining ring and vibration damping gasket, are complete and undamaged; prepare the necessary tools, torque wrench, thread sealant, insulating tape, and sealing material; Step 2, Electronic component installation: Insert the electronic housing frame into the outer tube, so that one end of it fits against the threaded end face of the outer tube, and the other end is connected to the wireless transmission sub. Battery assembly installation: Embed the waist-shaped battery assembly into the waist-shaped groove on the electronic compartment frame. Install the gamma measurement module, tilt measurement module, and measurement circuit board into the three evenly distributed arc-shaped grooves on the electronic compartment frame, and arrange them in a ring. Use wires to connect the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board in sequence. Install vibration damping sealing gaskets on the radial and end sides of the battery assembly, gamma measurement module, tilt measurement module, and measurement circuit board to ensure secure fixing. Step 3, Installation of the wireless transmitter sub: Connect the wireless transmitter sub to one end of the outer tube via the straight thread and tighten it to the specified torque with a torque wrench; pass the communication wire through the communication hole inside the wireless transmitter sub and connect it to the aviation plug assembly; insert the aviation plug assembly into the angled hole of the wireless transmitter sub and tighten it to seal the angled hole and ensure protective performance. Step 4, Installation of the transmitting antenna assembly and protective cover: Embed the transmitting antenna assembly into the annular groove of the wireless transmitting section; snap the two halves of the retaining ring onto the wireless transmitting connector, and fix the protective cover onto the retaining ring. Slide the protective cover onto the wireless transmitting connector so that the transmitting antenna assembly is completely covered within it. Step 5, sealing: Fill the gap between the transmitting antenna assembly and the protective cover with sealing material to ensure the stability of wireless signal transmission and protection performance.

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