Mining detachable wireless signal transmitter

Abstract

The utility model relates to a mining detachable wireless signal transmitter, the component structure comprises an outer tube, a wireless transmitting joint, a protective cover and a transmitting antenna component, the wireless transmitting joint is connected with one end of the outer tube through threads, and a communication hole is arranged in the wireless transmitting joint and is used for connecting a measurement-while-drilling instrument and a transmitting antenna through an aviation plug component. An annular groove in the wireless transmitting connector is used for containing the two half magnetic rings and the transmitting antenna assembly and is matched with the fixing ring through a clamping groove to support the protective cover and limit rotation of the protective cover. According to the utility model, the intrinsically safe circuit is adopted, and the sealing material is filled between the transmitting antenna and the protective cover, so that the waterproof and cinder-proof performance is improved. The structure is compact in design, easy to disassemble and assemble, suitable for complex environment under a coal mine, and capable of ensuring stable signal transmission.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground coal mine drilling measurement instruments and relates to a detachable wireless signal transmitter for mining. Background Art

[0002] Because existing MWD instruments in coal mines are located 5 to 8 meters from the drill bit, resulting in a lag in borehole trajectory measurement and control, near-bit MWD is needed to improve the accuracy of borehole trajectory measurement and control. A wireless transmitter is a core component of near-bit MWD instruments, primarily used to transmit near-bit measurement data across the screw motor to a receiver at the rear. This data is then transmitted to the borehole via the directional drill pipe, guiding the adjustment and control of the directional drilling trajectory. Existing near-bit MWD instruments developed for the surface oil industry are generally large in diameter and excessively long, severely affecting the screw motor's build-up rate and failing to meet the specific explosion-proof requirements of underground coal mines. Utility Model Content

[0003] In view of this, the purpose of the present invention is to solve the problem that the existing measurement while drilling instruments are too large and do not meet the special explosion-proof requirements of underground mines, and to provide a detachable wireless signal transmitter for mining.

[0004] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A detachable wireless signal transmitter for mining, comprising an outer tube, a wireless transmitting connector, a protective cover, and a transmitting antenna assembly; a measuring instrument while drilling is installed in the outer tube, a water hole is provided in the middle of the wireless transmitting connector, and the wireless transmitting connector is connected to one end of the outer tube by a thread; a communication hole is provided in the wireless transmitting connector, and an aerial plug assembly for connecting the measuring instrument while drilling and the transmitting antenna assembly is provided in the communication hole; an annular groove is provided on the wireless transmitting connector, and the transmitting antenna assembly is provided in the annular groove, and the protective cover is sleeved on the wireless transmitting connector to cover the transmitting antenna assembly therein; a plurality of strip holes are evenly distributed on the circumference of the protective cover as a channel for wireless signal transmission; the outer tube, wireless transmitting connector, and protective cover are all made of non-magnetic steel material to reduce magnetic interference and ensure the accuracy of measurement data.

[0006] Furthermore, the transmitting antenna assembly includes two magnetic rings, a transmitting antenna, and a transmitting circuit; the two magnetic rings are semicircular in shape, the inner diameter of the magnetic rings is the same as the bottom diameter of the annular groove, and are arranged in the annular groove; the transmitting circuit is an intrinsically safe circuit.

[0007] Furthermore, the annular groove has a shoulder on one side near the outer tube, with a slot on the shoulder. The protective cover has a protruding flange on one end near the outer tube, which snaps into the slot to limit the circumferential rotation of the protective cover. A fixing ring is provided at the other end of the protective cover. The fixing ring consists of two halves, which snap onto the wireless transmitter connector. The protective cover fits over the fixing ring and is supported by the fixing ring. The end surface of the fixing ring protrudes outward from the protective cover, providing radial positioning and support during connection. The combination of two halves of the magnetic ring and two halves of the fixing ring helps reduce the overall radial and axial dimensions and is removable for easy maintenance.

[0008] Furthermore, the communication hole includes a transverse hole arranged along the axial direction and an inclined hole arranged obliquely, and the aviation plug assembly is arranged in the inclined hole and seals the inclined hole.

[0009] Furthermore, a gap is provided between the transmitting antenna assembly and the protective cover, and the gap is filled with sealing material.

[0010] Furthermore, the wireless transmitting step connector is connected to the outer tube via a straight thread, and the other end is provided with a tapered thread.

[0011] Furthermore, the wireless transmitting connector is provided with a square bayonet for tightening and removing threads of the connector.

[0012] The beneficial effects of the present invention are:

[0013] 1. The structure is compact. It adopts the design of two half magnetic rings and two half fixed rings to reduce the radial and axial dimensions of the components. It has the advantages of small structure size and short length. It is suitable for use in small-diameter drilling measurement instruments in coal mines.

[0014] 2. Explosion-proof design, using intrinsically safe circuits to meet the explosion-proof requirements of underground coal mines.

[0015] 3. Easy maintenance, the components are designed to be detachable, which is easy to install and maintain.

[0016] 4. Stable signal transmission: The strip holes on the protective cover ensure the smooth flow of wireless signals, and the communication holes are sealed to improve anti-interference ability.

[0017] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0019] Figure 1 This is an overall schematic diagram of the detachable wireless signal transmitter for mining in the utility model.

[0020] Figure 2 This is a schematic structural diagram of the wireless transmitting connector in the present utility model.

[0021] Figure 3 This is the amplifying circuit diagram of the wireless transmitting connector of the utility model.

[0022] Figure 4 This is a cross-sectional diagram of a wireless transmitter connector.

[0023] Figure markings: 1-outer tube; 2-wireless transmitting connector; 3-protective cover; 4-transmitting antenna assembly; 5-fixing ring; 6-aviation plug assembly; 201-communication hole; 202-square bayonet; 203-threaded stop end face; 204-water hole; 206-annular space; 205-shoulder; 207-protective cover end face; 301-flange; 302-strip hole; 501-fixing ring end face. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the 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. The details in this specification can also 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 illustrations of the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0025] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] Please refer to Figures 1 to 4 , is a detachable wireless signal transmitter for mining, comprising an outer tube 1, a wireless transmitting connector 2, a protective cover 3, and a transmitting antenna assembly 4; a measuring while drilling instrument is installed in the outer tube 1, a water hole 204 is provided in the middle of the wireless transmitting connector 2, and the wireless transmitting connector 2 is connected to one end of the outer tube 1 by a thread; a communication hole 201 is provided in the wireless transmitting connector 2, and an aerial plug assembly 6 for connecting the measuring while drilling instrument and the transmitting antenna assembly 4 is provided in the communication hole 201; an annular groove is provided on the wireless transmitting connector 2, and the transmitting antenna assembly 4 is provided in the annular groove, and the protective cover 3 is sleeved on the wireless transmitting connector 2 to cover the transmitting antenna assembly 4 therein; a plurality of strip holes 302 are evenly distributed on the circumference of the protective cover 3 as a channel for wireless signal transmission; the outer tube 1, the wireless transmitting connector 2, and the protective cover 3 are all made of non-magnetic steel materials to reduce magnetic interference and ensure the accuracy of the measurement data.

[0028] The transmitting antenna assembly 4 includes two magnetic rings, a transmitting antenna, and a transmitting circuit; the two magnetic rings are semicircular in shape, the inner diameter of the magnetic rings is the same as the bottom diameter of the annular groove, and are arranged in the annular groove; the transmitting circuit adopts methods such as reducing capacitance and inductance and protecting the power supply part to achieve intrinsically safe circuit design to meet the special explosion-proof requirements of coal mines.

[0029] A shoulder 205 is provided on the side of the annular groove near the outer tube 1, with a slot formed on the shoulder 205. A protruding flange 301 is provided on the end of the protective cover 3 near the outer tube 1. The flange 301 is snapped into the slot, limiting the circumferential rotation of the protective cover 3. A fixing ring 5 is provided on the other end of the protective cover 3. The fixing ring 5 consists of two halves and is snapped into the groove of the wireless transmitter connector 2. The outer diameter of the fixing ring 5 matches the shoulder 205 and is used to support the protective cover 3. The protective cover 3 is fitted onto the fixing ring 5 and supported by the fixing ring 5. The fixing ring end face 501 protrudes outward from the protective cover 3, exceeding the protective cover end face 207 and the threaded stop end face 203 of the wireless transmitter connector 2, and is used for radial positioning and support during threaded connection at the right end. The combination of the two halves of the magnetic ring and the two halves of the fixing ring 5 helps reduce the overall radial and axial dimensions and is removable for easy maintenance.

[0030] The communication hole 201 includes a transverse hole arranged along the axial direction and an oblique hole arranged obliquely. The aviation plug assembly 6 is disposed in the oblique hole and seals the oblique hole.

[0031] An annular space 206 is provided between the transmitting antenna assembly 4 and the protective cover 3 , and the annular space 206 is filled with sealing material to prevent mud and water.

[0032] The wireless transmitter connector is connected to the outer tube 1 by a straight thread, and the other end is provided with a tapered thread. The wireless transmitter connector 2 is provided with a square bayonet 202 for tightening and removing the thread of the connector.

[0033] The assembly process of the detachable wireless signal transmitter for mining in this embodiment includes the following steps:

[0034] S1. Install the magnetic ring. First, insert the two semicircular magnetic rings into the annular grooves of the wireless transmitter connector 2 respectively;

[0035] S2. Install the transmitting antenna: Place the transmitting antenna on the magnetic ring and connect the transmitting circuit.

[0036] S3. Install the fixing ring 5: Clamp the two halves of the fixing ring 5 onto the wireless transmitting connector 2 to ensure the axial stability of the transmitting antenna assembly 4;

[0037] S4. Install the protective cover 3: Put the protective cover 3 on the wireless transmitting connector 2 so that the flange 301 of the protective cover 3 is engaged with the slot on the annular groove to prevent circumferential rotation;

[0038] S5. Filling with sealing material: Filling the gap between the transmitting antenna assembly 4 and the protective cover 3 with sealing material to enhance the sealing performance;

[0039] S6. Connect outer tube 1: Use straight threads to connect wireless transmitter connector 2 to outer tube 1. Use tapered threads on the other end to connect to the drill pipe to ensure a secure installation.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A detachable wireless signal transmitter for mining, characterized by: It includes an outer tube, a wireless transmitting connector, a protective cover, and a transmitting antenna assembly; a measurement while drilling instrument is installed in the outer tube, a water hole is provided in the middle of the wireless transmitting connector, and the wireless transmitting connector is connected to one end of the outer tube by a thread; a communication hole is provided in the wireless transmitting connector, and an aerial plug assembly for connecting the measurement while drilling instrument and the transmitting antenna assembly is provided in the communication hole; an annular groove is provided on the wireless transmitting connector, and the transmitting antenna assembly is arranged in the annular groove, and the protective cover is sleeved on the wireless transmitting connector to cover the transmitting antenna assembly therein; a plurality of strip holes are evenly distributed on the circumference of the protective cover as a channel for wireless signal transmission; the outer tube, wireless transmitting connector, and protective cover are all made of non-magnetic steel.

2. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: The transmitting antenna assembly includes two magnetic rings, a transmitting antenna, and a transmitting circuit; the two magnetic rings are semicircular in shape, the inner diameter of the magnetic rings is the same as the bottom diameter of the annular groove, and are arranged in the annular groove; the transmitting circuit is an intrinsically safe circuit.

3. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: A shoulder is provided on one side of the annular groove close to the outer tube, and a slot is provided on the shoulder. A protruding flange is provided on one end of the protective cover close to the outer tube, and the flange is clamped in the slot to limit the circumferential rotation of the protective cover. A fixing ring is provided at the other end of the protective cover, and the fixing ring consists of two halves. The fixing ring is clamped on the wireless transmitting connector, and the protective cover is sleeved on the fixing ring and supported by the fixing ring; the end surface of the fixing ring protrudes outward from the protective cover, and is used for radial positioning and support during connection.

4. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: The communication hole includes a transverse hole arranged along the axial direction and an inclined hole arranged obliquely. The aviation plug assembly is arranged in the inclined hole and seals the inclined hole.

5. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: A gap is provided between the transmitting antenna assembly and the protective cover, and the gap is filled with sealing material.

6. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: The wireless transmitting step connector is connected to the outer tube via a straight thread, and the other end is provided with a tapered thread.

7. The detachable wireless signal transmitter for mining according to claim 1, characterized in that: The wireless transmitting connector is provided with a square bayonet for tightening and removing threads of the connector.

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