Transmitting nipple of electromagnetic wave wireless measurement while drilling device for coal mine

Abstract

The transmitting short section of the electromagnetic wave wireless measurement while drilling device for the coal mine comprises a non-magnetic drill collar and a control circuit board, a circuit board protection cylinder is fixedly installed on the outer wall of the control circuit board, a first sealing protection sleeve is fixedly installed at the top end of the circuit board protection cylinder, and a second sealing protection sleeve is fixedly installed at the bottom end of the first sealing protection sleeve. A protective mounting sleeve is fixedly mounted at the top end of the first sealing protective sleeve, a storage battery module is fixedly mounted in the protective mounting sleeve, and the storage battery module supplies power to the whole device. The control circuit board and other structures are comprehensively protected through the non-magnetic drill collar, the influence of the working environment of the whole device on the device is avoided, and it is guaranteed that the electromagnetic wave module can work smoothly; meanwhile, the circuit board protection cylinder is matched with the protection supporting frame, so that the control circuit board is further protected, and the safety of the control circuit board in the working process is improved; and the whole device is convenient to assemble, mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling detection devices, in particular to a transmitting short section of an electromagnetic wave wireless drilling measurement device for coal mines. Background Art

[0002] In the prior art, before coal seam mining, in order to make the coal mine production environment meet safety requirements, a measurement while drilling system must be used to perform near-horizontal directional drilling to improve the extraction efficiency and extraction volume of borehole gas. At present, most of the drilling equipment in coal mines still uses ordinary drill rods and ordinary drilling rigs. If the wired measurement while drilling method is used, these equipment must be replaced or modified, which is very expensive.

[0003] After searching, the Chinese patent application No. 201220089055.0 discloses a transmitting short section of an electromagnetic wave wireless downhole measurement device for coal mines, including a suspension head, a sleeve, and a circuit board frame. The transmitting short section is cylindrical as a whole, and is connected from top to bottom by a suspension head, a sleeve, a circuit board frame and a flange; the suspension head is composed of a joint and a shoulder of an integral structure, and a shoulder clamp is provided on the shoulder; one end of the circuit board frame has a circuit board fixing surface, which is tightly sleeved in the sleeve and connected to the suspension head, and a circuit board is installed on the circuit board fixing surface end, and the circuit board is fixed to the circuit board fixing surface by screws; the inner cavity at the other end of the circuit board frame is a central through hole with a stepped wiring, and the flange is fixed to the end face of the circuit board frame by screws, and a socket is provided in the middle of the flange.

[0004] The above patent has the following shortcomings: the suspension head of the launching short section adopts a fixed design in which the shoulder is clamped into the suspension short section, which can prevent the drilling fluid from impacting it and causing rotation; however, in actual use, the launching short section must be isolated from the influence of the external environment while not affecting its own work. However, the sleeve set on the launching short section has relatively weak protection ability for itself and is not convenient for quick installation. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a transmitting short section of an electromagnetic wave wireless drilling measurement device for coal mines.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A transmitting short section of an electromagnetic wave wireless downhole measurement device for coal mines comprises: a non-magnetic drill collar and a control circuit board, a circuit board protective tube is fixedly mounted on the outer wall of the control circuit board, a sealing protective sleeve 1 is fixedly mounted on the top of the circuit board protective tube, a protective mounting sleeve is fixedly mounted on the top of the sealing protective sleeve 1, a battery module is fixedly mounted inside the protective mounting sleeve, and the battery module supplies power to the entire device; a sealing protective sleeve 2 is fixedly mounted on the bottom end of the circuit board protective tube, an electromagnetic wave module is fixedly mounted inside the sealing protective sleeve 2, and the electromagnetic wave module is used for transmitting and receiving electromagnetic waves.

[0008] As a further solution of the utility model: protective support frames are provided on both sides of the control circuit board, and the protective support frames are fixedly installed inside the circuit board protective tube.

[0009] As a further solution of the utility model: an electrical connection clamp 1 is fixedly connected to the top of the control circuit board, and the electrical connection clamp 1 is connected to the battery module.

[0010] As a further solution of the utility model: a second electrical connection card is fixedly connected to the bottom of the control circuit board, and the second electrical connection card is connected to the electromagnetic wave module.

[0011] As a further solution of the utility model: an internally threaded sleeve 1 is fixedly installed on the top of the outer wall of the circuit board protection tube, and a plurality of fixed connecting pins are fixedly connected to the top of the internally threaded sleeve 1 at equal intervals.

[0012] As a further solution of the utility model: a top fixed pressure cover is fixedly installed on the top end of the plurality of fixed connecting pins, and the top fixed pressure cover is fixedly clamped on the top end of the protective mounting sleeve.

[0013] As a further solution of the utility model: an internally threaded sleeve 2 is fixedly installed on the bottom of the outer wall of the circuit board protection sleeve, and the top end of the sealing protection sleeve 2 is fixedly installed inside the internally threaded sleeve 2.

[0014] As a further solution of the utility model: the top end of the top fixed gland is provided with an externally threaded protective gland, and the externally threaded protective gland is fixedly installed on the top of the inner cavity of the non-magnetic drill collar.

[0015] Compared with the prior art, the utility model provides a transmitting short section of an electromagnetic wave wireless drilling measurement device for coal mines, which has the following beneficial effects:

[0016] The launch short section comprehensively protects the control circuit board and other structures through the non-magnetic drill collar, avoiding the influence of the working environment of the whole device on it, and ensuring that the electromagnetic wave module can work smoothly; at the same time, the circuit board protection tube cooperates with the protection support frame to further protect the control circuit board and improve the safety of the control circuit board during operation; and the whole device is easy to assemble, and it is very convenient to install and disassemble.

[0017] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall assembly of the utility model;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the overall assembly of the utility model;

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0022] In the figure: 1. non-magnetic drill collar; 2. external thread protective pressure cap; 3. installation of hexagonal cartridge; 4. top fixed pressure cap; 5. connection clamp arm 1; 6. protective installation sleeve; 7. battery module; 8. electrical connection clamp head 1; 9. sealing protection sleeve 1; 10. internal thread sleeve 1; 11. connection clamp arm 2; 12. fixed connecting pin; 13. control circuit board; 14. protective support frame; 15. circuit board protective cylinder; 16. electrical connection clamp head 2; 17. electromagnetic wave module; 18. sealing protection sleeve 2; 19. internal thread sleeve 2; 20. connection clamp arm 3. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] A transmitting short section of an electromagnetic wave wireless drilling measurement device for coal mines, such as Figures 1 to 4As shown, it includes: a non-magnetic drill collar 1 and a control circuit board 13, a circuit board protection tube 15 is fixedly installed on the outer wall of the control circuit board 13, and protection support frames 14 are arranged on both sides of the control circuit board 13. The protection support frames 14 are fixedly installed inside the circuit board protection tube 15 to provide more comprehensive protection for the control circuit board 13 and improve the stability of the control circuit board 13 during the drilling movement.

[0025] A sealing protection sleeve 9 is fixedly installed on the top of the circuit board protection tube 15 , and an electrical connection clamp 8 is arranged inside the sealing protection sleeve 9 . The electrical connection clamp 8 is fixedly connected to the top of the control circuit board 13 .

[0026] A protective mounting sleeve 6 is fixedly mounted on the top of the sealing protective sleeve 9, a battery module 7 is fixedly mounted inside the protective mounting sleeve 6, the bottom of the battery module 7 is plugged into the inside of the electrical connection clamp 8, and the battery module 7 supplies power to the entire device.

[0027] An internal threaded sleeve 10 is fixedly installed on the top of the outer wall of the circuit board protection tube 15, and a plurality of connecting clamp arms 11 are equidistantly integrally formed on the outer wall of the internal threaded sleeve 10. The bottom thread of the sealing protection sleeve 9 is installed inside the internal threaded sleeve 10, and a plurality of fixed connecting pins 12 are equidistantly fixedly connected to the top of the internal threaded sleeve 10.

[0028] A top fixed pressure cover 4 is fixedly installed on the top of the protective mounting sleeve 6, and a plurality of connecting clamp arms 5 are equidistantly formed on the outer wall of the top fixed pressure cover 4. The top ends of a plurality of fixed connecting pins 12 all penetrate the top fixed pressure cover 4 and extend upward, and nuts are threadedly installed on the extended ends, so that the protective mounting sleeve 6 and the battery module 7 are stably installed on the top of the control circuit board 13.

[0029] A sealing protection sleeve 18 is fixedly installed at the bottom end of the circuit board protection cylinder 15 , and an electromagnetic wave module 17 is fixedly installed inside the sealing protection sleeve 18 . The electromagnetic wave module 17 is used for transmitting and receiving electromagnetic waves.

[0030] A second electrical connection clamp 16 is fixedly connected to the bottom of the control circuit board 13 . The second electrical connection clamp 16 is disposed inside the second sealing protection sleeve 18 , and the second electrical connection clamp 16 is connected to the electromagnetic wave module 17 .

[0031] An internal threaded sleeve 19 is fixedly installed at the bottom of the outer wall of the circuit board protection tube 15. A plurality of connecting arms 20 are integrally formed at equal intervals on the outer wall of the internal threaded sleeve 19. The top end of the sealing protection sleeve 18 is fixedly installed inside the internal threaded sleeve 19.

[0032] An externally threaded protective gland 2 is provided at the top of the top fixed gland 4, and a hexagonal cartridge 3 is fixedly connected inside the externally threaded protective gland 2 to facilitate loading and unloading of the externally threaded protective gland 2, and the externally threaded protective gland 2 is fixedly installed at the top of the inner cavity of the non-magnetic drill collar 1.

[0033] The connecting arm 1 5 , the connecting arm 2 11 and the connecting arm 3 20 correspond to each other and are slidably connected to the inside of the non-magnetic drill collar 1 , so that the circuit board protection tube 15 and other structures are relatively fixed to the non-magnetic drill collar 1 .

[0034] Working principle:

[0035] Please refer to Figures 1 to 4 , assemble the device as shown in the figure;

[0036] When the device is in use, the coal mine drill bit is first installed at the bottom end of the non-magnetic drill collar 1, and then the drill rod is installed in sequence on the top of the non-magnetic drill collar 1, and then the coal mine drill bit is controlled to work through the drilling machinery; during the operation of the coal mine drill bit, the control circuit board 13 starts the electromagnetic wave module 17, and the electromagnetic wave module 17 emits electromagnetic waves to detect the movement state of the drill bit and the environment around the drill bit, and the detection results are wirelessly transmitted to the ground control end, so that the staff can control the actual situation of the drill bit.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A transmitting short section of an electromagnetic wave wireless drilling measurement device for coal mines, It is characterized in that include: A non-magnetic drill collar (1) and a control circuit board (13); a circuit board protection tube (15) is fixedly mounted on the outer wall of the control circuit board (13); a sealing protection sleeve (9) is fixedly mounted on the top of the circuit board protection tube (15); a protective mounting sleeve (6) is fixedly mounted on the top of the sealing protection sleeve (9); a battery module (7) is fixedly mounted inside the protective mounting sleeve (6); the battery module (7) supplies power to the entire device; a sealing protection sleeve (18) is fixedly mounted on the bottom end of the circuit board protection tube (15); an electromagnetic wave module (17) is fixedly mounted inside the sealing protection sleeve (18); the electromagnetic wave module (17) is used to transmit and receive electromagnetic waves.

2. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 1, Features: Protection support frames (14) are provided on both sides of the control circuit board (13), and the protection support frames (14) are fixedly installed inside the circuit board protection cylinder (15).

3. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 1, Features: An electrical connection clamp head (8) is fixedly connected to the top of the control circuit board (13), and the electrical connection clamp head (8) is connected to the battery module (7).

4. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 1, Features: A second electrical connection clamp (16) is fixedly connected to the bottom of the control circuit board (13), and the second electrical connection clamp (16) is connected to the electromagnetic wave module (17).

5. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 1, Features: An internal threaded sleeve (10) is fixedly mounted on the top of the outer wall of the circuit board protection tube (15), and a plurality of fixed connection pins (12) are fixedly connected to the top of the internal threaded sleeve (10) at equal intervals.

6. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 5, Features: A top fixed pressure cover (4) is fixedly mounted on the top ends of the plurality of fixed connection pins (12), and the top fixed pressure cover (4) is fixedly clamped on the top end of the protective mounting sleeve (6).

7. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 1, Features: The bottom of the outer wall of the circuit board protection tube (15) is fixedly mounted with an internal threaded sleeve (19), and the top of the sealing protection sleeve (18) is fixedly mounted inside the internal threaded sleeve (19).

8. The transmitting short section of the electromagnetic wave wireless drilling measurement device for coal mine according to claim 6, Features: An externally threaded protective gland (2) is provided at the top of the top fixed gland (4), and the externally threaded protective gland (2) is fixedly installed at the top of the inner cavity of the non-magnetic drill collar (1).

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