Underground electromagnetic wave signal receiving nipple

Abstract

The invention discloses an underground electromagnetic wave signal receiving nipple, and relates to the technical field of electromagnetic wave signal receiving nipples. Comprising a pup joint mounting cylinder, fixing holes are formed in the inner side of the pup joint mounting cylinder in an array mode, a moving mechanism is arranged in the pup joint mounting cylinder and comprises a moving seat, and limiting mechanisms are arranged at the upper end and the lower end of the moving seat respectively; a matching mechanism is arranged on the moving seat, a receiving mechanism is arranged on the short section mounting cylinder, the receiving mechanism comprises a receiving mounting seat, a fixing shaft is arranged on the receiving mounting seat in a radial telescopic mode, and the fixing shaft is fixed by being matched with the fixing hole; the matching mechanism comprises a matching shaft which is radially and movably arranged on the moving seat, and the matching shaft is matched with the receiving mounting seat to drive the receiving mechanism to move; an inspection mechanism is arranged at the bottom end of the moving seat and is used for inspecting the short section mounting cylinder; the distance between the transmitting source and the receiving source can be adjusted in real time, and deformation inspection can be independently carried out on the interior of the short section.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic wave signal receiving subs, and in particular to an underground electromagnetic wave signal receiving sub. Background Art

[0002] The receiving subsection of underground electromagnetic wave signals is widely used in mine safety communication, automatic control, positioning system and other aspects. The wireless communication system in the mine often relies on electromagnetic wave signal transmission to realize personnel positioning, environmental monitoring, equipment control and so on. The subsection can be used to describe the short transmission paragraph of the signal receiving module in these systems. The current receiving subsection of underground electromagnetic wave signals is used to receive the electromagnetic wave signal emitted by the transmitting antenna of the rotary steering tool. Rotary steering drilling is one of the most popular drilling technologies at present. Contemporary information technology provides technical support for the development of this technology, and the exploitation of more complex oil and gas reservoirs provides an application and practice environment for this technology; the transmission efficiency of electromagnetic waves is related to the medium, distance, metal shielding, etc. In theory, the closer the distance, the more conducive to the transmission of electromagnetic waves, but too close a distance will cause interference. Therefore, in a complex underground environment, by adjusting the distance between the receiver and the transmitter in real time, the undesirable multipath effect can be avoided, thereby improving the reception quality. Based on this, the present invention proposes an electromagnetic wave signal receiving subsection, which can adjust the distance between the transmitting source and the receiving source in real time, and can perform deformation inspection on the inside of the subsection separately. Summary of the invention

[0003] In view of the above technical problems, the present invention can adjust the distance between the transmitting source and the receiving source in real time, and can perform deformation inspection on the inside of the short section separately.

[0004] The scheme used in the present invention is: a downhole electromagnetic wave signal receiving short section, including a short section mounting tube, an array of fixing holes is arranged on the inner side of the short section mounting tube, a moving mechanism is arranged inside the short section mounting tube, the moving mechanism includes a screw rod 1 rotatably mounted inside the short section mounting tube, and a moving seat that forms a spiral pair with the screw rod 1, and a limiting mechanism is respectively arranged at the upper and lower ends of the moving seat; a matching mechanism is arranged on the moving seat, and a receiving mechanism is arranged inside the short section mounting tube, the receiving mechanism includes a receiving mounting seat, a fixed shaft is radially telescopically arranged on the receiving mounting seat, and the fixed shaft is fixed by matching with the fixing hole; the matching mechanism includes a matching shaft radially movable on the moving seat, and the matching shaft matches with the receiving mounting seat to drive the receiving mechanism to move; an inspection mechanism is arranged at the bottom end of the moving seat for inspecting and processing the inner wall of the short section mounting tube.

[0005] Furthermore, mounting disk 1 and mounting disk 2 are respectively provided at both ends inside the short section mounting tube, a motor 1 is provided on the mounting disk 1, a screw rod 1 is rotatably provided between the mounting disk 1 and the mounting disk 2, the motor 1 is used to drive the screw rod 1, a limit frame is provided on the inner side of the short section mounting tube, the limit mechanism is slidably matched with the limit frame, and the receiving mechanism is slidably matched with the limit frame.

[0006] Furthermore, the limiting mechanism includes an electric cylinder arranged on a movable seat, a slip ring is arranged on the telescopic rod of the electric cylinder, a connecting rod is rotatably mounted on the slip ring, a movable limiting frame is arranged on the outer side of the movable seat, a rocker rod is rotatably mounted on the movable limiting frame, one end of the connecting rod is rotatably connected to the rocker rod, a limiting seat is arranged on the end of the rocker rod facing the inner side of the short section mounting tube, the limiting seat is slidably matched with the limiting frame, and the movable limiting frame is slidably matched with the inner side of the receiving mechanism.

[0007] Furthermore, the receiving mechanism includes a limit groove 1 opened on the outside of the receiving mounting seat, and a limit groove 2 opened on the inside of the receiving mounting seat, the movable limit frame is slidably matched with the limit groove 2, and the limit groove 1 is slidably matched with the limit frame; an electromagnetic wave receiver is arranged at the bottom end of the receiving mounting seat; a buffer member is arranged in an array on the outside of the receiving mounting seat, and the buffer member includes a buffer rod telescopically arranged on the receiving mounting seat, a buffer spring is connected between the buffer rod and the receiving mounting seat, and a buffer pad is attached between the end of the buffer spring and the receiving mounting seat.

[0008] Furthermore, a mating opening is provided on the inner side of the receiving mounting seat, and a mating mechanism cooperates with the mating opening for fixation; a pushing rack is telescopically arranged on the receiving mounting seat, a reset spring is connected between one end of the pushing rack and the receiving mounting seat, a fixing groove is provided on the other end of the pushing rack, a tooth groove is provided on the fixed shaft, and an intermediate gear is rotatably arranged between the fixed shaft and the pushing rack, and the two sides of the intermediate gear are respectively meshed with the pushing rack and the fixed shaft.

[0009] Furthermore, a card seat is telescopically arranged on the receiving mounting seat, a spring is connected between the card seat and the receiving mounting seat, and lifting wheels are arranged on both sides of the card seat. The card seat cooperates with the fixed groove on the pushing rack to fix the pushing rack, and the pushing rack is pushed and controlled by the cooperating mechanism.

[0010] Furthermore, the mating mechanism includes a mating mounting seat arranged on the moving seat, a gear ring is rotatably mounted on the mating mounting seat, and a second motor is arranged on the mating mounting seat, a second gear is arranged on the output shaft of the second motor, the second gear is meshed with the gear ring, a second screw rod is rotatably mounted on the mating mounting seat, a connecting gear is arranged at one end of the second screw rod, the connecting gear is meshed with the gear ring, one end of the mating shaft and the second screw rod form a spiral pair, a push plate is arranged on the other end of the mating shaft, the push plate is used to push the rack, a lifting rod is arranged on the push plate, the lifting rod is used to push the lifting wheel so that the card seat is separated from the fixing groove, and the mating shaft cooperates with the mating mouth for fixing.

[0011] Furthermore, the inspection mechanism includes a motor three arranged on a movable seat, a gear three is arranged on the output shaft of the motor three, an azimuth gear plate is rotatably installed on the movable seat, the azimuth gear plate is meshed with the gear three, and an ultrasonic detector is arranged on the azimuth gear plate for inspecting the inner wall of the short section installation cylinder.

[0012] Compared with the prior art, the present invention has the following advantages: (1) at the target position, the fixed shaft cooperates with the fixed hole to fix the receiving mounting seat, and the buffer rod contacts the inner wall of the short section mounting tube to reduce vibration; (2) the present invention can adjust the position of the receiving mounting seat, that is, adjust the distance of electromagnetic wave signal reception; (3) after the receiving mounting seat is fixed, the movable seat can be moved independently to inspect the inside of the short section mounting tube at different positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the short section installation tube of the present invention.

[0015] Figure 3 It is a schematic diagram of the internal structure of the short section installation tube of the present invention.

[0016] Figure 4 This is a schematic diagram of the structure of the receiving mounting seat of the present invention.

[0017] Figure 5 It is a schematic diagram of the structure of the movable seat of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the limiting mechanism of the present invention.

[0019] Figure 7 It is a schematic diagram of the matching mechanism structure of the present invention.

[0020] Figure 8 It is a schematic diagram of the local structure of the matching mechanism of the present invention.

[0021] Fig. 9 It is a schematic diagram of the cross-sectional structure of the receiving mounting seat of the present invention.

[0022] Fig.10 It is a schematic diagram of the local structure of the receiving mechanism of the present invention.

[0023] Fig.11 For the present invention Fig.10 Schematic diagram of the structure at the A mark in the middle.

[0024] Fig.12 It is a schematic diagram of the structure of the inspection mechanism of the present invention.

[0025] Reference numerals: 1-mdw pup joint; 2-pup joint mounting tube; 201-fixing hole; 202-limiting frame; 3-power drilling tool; 4-rotary guide tool; 5-drill bit; 6-motor 1; 7-screw rod 1; 8-mounting plate 1; 9-mounting plate 2; 10-receiving mounting seat; 1001-limiting groove 1; 1002-limiting groove 2; 1003-matching opening; 11-moving seat; 12-electromagnetic wave receiver; 13-matching mounting seat; 14-moving limiting frame; 15-electric cylinder 1; 16-slip ring; 17-connecting rod; 18-rocker; 19-limiting seat; 20-gear ring; 21-motor two; 22-gear two; 23-matching shaft; 24-screw two; 25-connecting gear; 26-push plate; 27-lifting rod; 28-fixed shaft; 29-intermediate gear; 30-pushing rack; 31-buffer rod; 32-buffer spring; 33-reset spring; 34-cage; 35-lifting wheel; 36-spring one; 37-azimuth gear disc; 38-ultrasonic detector; 39-motor three; 40-gear three. DETAILED DESCRIPTION

[0026] Example: Figures 1 to 12 As shown, a downhole electromagnetic wave signal receiving short section is connected with a measurement while drilling short section 1, a short section mounting tube 2, a power drilling tool 3, a rotary guide tool 4, and a drill bit 5 in sequence from left to right. The inner side of the short section mounting tube 2 is arrayed with fixing holes 201, and a moving mechanism is arranged inside the short section mounting tube 2. The moving mechanism includes a screw rod 7 rotatably mounted inside the short section mounting tube 2, and a moving seat 11 that forms a spiral pair with the screw rod 7. The upper and lower ends of the moving seat 11 are respectively provided with limited position mechanisms; a matching mechanism is arranged on the moving seat 11, and a receiving mechanism is arranged inside the short section mounting tube 2, and the receiving mechanism includes a receiving mounting seat 10, and a fixed shaft 28 is radially telescopically arranged on the receiving mounting seat 10, and the fixed shaft 28 is fixed by matching with the fixing hole 201; the matching mechanism includes a matching shaft 23 radially movable on the moving seat 11, and the matching shaft 23 matches with the receiving mounting seat 10 to drive the receiving mechanism to move; an inspection mechanism is arranged at the bottom end of the moving seat 11 for inspecting and processing the inner wall of the short section mounting tube 2.

[0027] A mounting plate 18 and a mounting plate 29 are respectively arranged at two ends inside the short section mounting tube 2, a motor 6 is arranged on the mounting plate 8, a screw rod 7 is rotatably arranged between the mounting plate 18 and the mounting plate 29, the motor 6 is used to drive the screw rod 7, a limit frame 202 is arranged on the inner side of the short section mounting tube 2, the limit mechanism is slidably matched with the limit frame 202, and the receiving mechanism is slidably matched with the limit frame 202; the limit mechanism includes an electric cylinder 15 arranged on the movable seat 11, a slip ring 16 is arranged on the telescopic rod of the electric cylinder 15, a connecting rod 17 is rotatably mounted on the slip ring 16, a mobile limit frame 14 is arranged on the outer side of the movable seat 11, a swing rod 18 is rotatably mounted on the mobile limit frame 14, one end of the connecting rod 17 is rotatably connected with the swing rod 18, a limit seat 19 is arranged on one end of the swing rod 18 facing the inner side of the short section mounting tube 2, the limit seat 19 is slidably matched with the limit frame 202, and the mobile limit frame 14 is slidably matched with the inner side of the receiving mechanism.

[0028] The receiving mechanism includes a limiting groove 1001 opened on the outside of the receiving mounting seat 10, and a limiting groove 1002 opened on the inside of the receiving mounting seat 10, the movable limiting frame 14 is slidably matched with the limiting groove 1002, and the limiting groove 1001 is slidably matched with the limiting frame 202; an electromagnetic wave receiver 12 is arranged at the bottom end of the receiving mounting seat 10; an array of buffers is arranged on the outside of the receiving mounting seat 10, and the buffers include a buffer rod 31 telescopically arranged on the receiving mounting seat 10, a buffer spring 32 is connected between the buffer rod 31 and the receiving mounting seat 10, and a buffer pad is attached between the end of the buffer spring 32 and the receiving mounting seat 10; a matching opening 1003 is opened on the inside of the receiving mounting seat 10, and the matching mechanism and the matching opening 1003 Cooperate to fix; a pushing rack 30 is telescopically arranged on the receiving mounting seat 10, a reset spring 33 is connected between one end of the pushing rack 30 and the receiving mounting seat 10, a fixing groove is arranged at the other end of the pushing rack 30, a tooth groove is opened on the fixed shaft 28, and an intermediate gear 29 is rotatably arranged between the fixed shaft 28 and the pushing rack 30, and the two sides of the intermediate gear 29 are respectively engaged with the pushing rack 30 and the fixed shaft 28; a clamping seat 34 is telescopically arranged on the receiving mounting seat 10, a spring 36 is connected between the clamping seat 34 and the receiving mounting seat 10, and lifting wheels 35 are arranged on both sides of the clamping seat 34, the clamping seat 34 cooperates with the fixed groove on the pushing rack 30 to fix the pushing rack 30, and the pushing rack 30 is pushed and controlled by the cooperating mechanism.

[0029] The matching mechanism includes a matching mounting seat 13 arranged on the moving seat 11, a gear ring 20 is rotatably mounted on the matching mounting seat 13, and a motor 21 is arranged on the matching mounting seat 13, a gear 22 is arranged on the output shaft of the motor 21, and the gear 22 meshes with the gear ring 20, a screw rod 24 is rotatably mounted on the matching mounting seat 13, a connecting gear 25 is arranged at one end of the screw rod 24, and the connecting gear 25 meshes with the gear ring 20, one end of the matching shaft 23 and the screw rod 24 form a spiral pair, and a push plate 26 is arranged on the other end of the matching shaft 23, and the push plate 26 Used to push the pushing rack 30, a lifting rod 27 is arranged on the pushing plate 26, and the lifting rod 27 is used to push the lifting wheel 35 to make the base 34 disengage from the fixing groove, and the matching shaft 23 cooperates with the matching port 1003 for fixation; the inspection mechanism includes a motor 39 arranged on the moving base 11, and a gear 3 40 is arranged on the output shaft of the motor 39, and an azimuth toothed disk 37 is rotatably installed on the moving base 11, and the azimuth toothed disk 37 is meshed with the gear 3 40, and an ultrasonic detector 38 is arranged on the azimuth toothed disk 37, which is used to inspect the inner wall of the short section mounting tube 2.

[0030] Working principle: In the short section installation tube 2, the position of the receiving installation seat 10 can be adjusted, that is, the distance of receiving the electromagnetic wave signal can be adjusted. In different position areas, the receiving position of the electromagnetic wave signal will affect the receiving quality. Generally, the closer the distance, the better the receiving quality will be. However, too close a distance will also cause interference in signal reception. Therefore, this embodiment can adjust the receiving position of the electromagnetic wave signal in real time according to actual conditions; specifically, through the operation of the motor 16, the screw rod 17 rotates to move the movable seat 11. When the movable seat 11 moves, the limit seat 19 is slidably matched with the limit frame 202, that is, the movable limit is realized, and the motor 21 works to make the gear ring 20 rotates, and then the screw rod 24 rotates to drive the matching shaft 23 to move. When the matching shaft 23 moves, the push plate 26 pushes the pushing rack 30, and the lifting rod 27 first pushes the lifting wheel 35, so that the clamping seat 34 releases the fixation of the pushing rack 30. Under the transmission action of the intermediate gear 29, the fixed shaft 28 moves. The fixed shaft 28 is matched with the fixing hole 201 to fix the receiving mounting seat 10. The fixed shaft 28 is telescoped inward to release the match with the fixing hole 201, and then the matching shaft 23 is matched with the matching port 1003 at the same time to fix the receiving mounting seat 10; when the moving seat 11 moves, it can drive the receiving mounting seat 10 to move, that is, adjust the position.

[0031] At the target position, the fixed shaft 28 cooperates with the fixed hole 201 to fix the receiving mounting seat 10, and the buffer rod 31 contacts the inner wall of the short section mounting tube 2 to reduce vibration; after the receiving mounting seat 10 is fixed, the movable seat 11 can be moved separately to check the inside of the short section mounting tube 2 at different positions. The movable seat 11 moves separately, and when passing through the receiving mounting seat 10, the extension and retraction of the two limit mechanisms can be controlled separately, that is, the movement of the slip ring 16 is controlled by the electric cylinder 15, and under the connection of the connecting rod 17, the rocker arm 18 is deflected, for example, passing through the receiving mounting seat from top to bottom. When installing the seat 10, the movable limit frame 14 slides with the limit groove 2 1002 to play a limiting role, and the upper limit seat 19 disengages from the limit frame 202. When the lower limit seat 19 passes through the receiving mounting seat 10, it slides with the limit frame 202 to ensure that the movable seat 11 can be limited during the entire moving process to achieve stable movement; further, through the operation of the motor 39, the azimuth gear disc 37 rotates, and the inner wall of the short section mounting tube 2 can be inspected by the ultrasonic detector 38, that is, to check whether it has deformation, etc., so as to provide timely feedback and maintenance.

Claims

1. A downhole electromagnetic wave signal receiving short section, comprising a short section mounting tube (2), characterized in that: The short section mounting tube (2) is provided with fixing holes (201) arranged in an array on the inner side thereof. A moving mechanism is provided inside the short section mounting tube (2). The moving mechanism comprises a screw rod (7) rotatably mounted inside the short section mounting tube (2), and a moving seat (11) which forms a spiral pair with the screw rod (7). Limiting mechanisms are provided at the upper and lower ends of the moving seat (11). A matching mechanism is provided on the moving seat (11), and a receiving mechanism is provided inside the short section mounting tube (2). The receiving mechanism comprises a receiving mounting seat (10). A fixing shaft (28) is radially telescopically provided on the receiving mounting seat (10). The matching mechanism comprises a matching shaft (23) radially movable and provided on the moving seat (11). An inspection mechanism is provided at the bottom end of the moving seat (11). A limit frame (202) is arranged on the inner side of the short section mounting tube (2); the limit mechanism comprises a movable limit frame (14) and a limit seat (19), and the limit seat (19) and the limit frame (202) are slidably matched; the receiving mechanism also comprises a limit groove 1 (1001) and a limit groove 2 (1002) provided on the receiving mounting seat (10), the movable limit frame (14) and the limit groove 2 (1002) are slidably matched, and the limit groove 1 (1001) and the limit frame (202) are slidably matched; a matching opening (1003) is provided on the inner side of the receiving mounting seat (10), and the matching shaft (23) matches with the matching opening (1003) for fixing.

2. The downhole electromagnetic wave signal receiving subsection according to claim 1, characterized in that: The two ends of the short section mounting tube (2) are respectively provided with a mounting plate 1 (8) and a mounting plate 2 (9), a motor 1 (6) is provided on the mounting plate 1 (8), a screw rod 1 (7) is rotatably provided between the mounting plate 1 (8) and the mounting plate 2 (9), and the motor 1 (6) is used to drive the screw rod 1 (7).

3. The downhole electromagnetic wave signal receiving subsection according to claim 1, characterized in that: The limiting mechanism comprises an electric cylinder (15) arranged on a movable seat (11), a slip ring (16) being arranged on a telescopic rod of the electric cylinder (15), a connecting rod (17) being rotatably mounted on the slip ring (16), a movable limiting frame (14) being arranged outside the movable seat (11), and a swing rod (18) being rotatably mounted on the movable seat (11), one end of the connecting rod (17) being rotatably connected to the swing rod (18), and a limiting seat (19) being arranged at one end of the swing rod (18) facing the inner side of the short section mounting tube (2).

4. The downhole electromagnetic wave signal receiving subsection according to claim 1, characterized in that: An electromagnetic wave receiver (12) is provided at the bottom end of the receiving mounting seat (10); buffer members are arranged in an array outside the receiving mounting seat (10), the buffer members comprising a buffer rod (31) telescopically arranged on the receiving mounting seat (10), a buffer spring (32) is connected between the buffer rod (31) and the receiving mounting seat (10), and a buffer pad is attached between the end of the buffer spring (32) and the receiving mounting seat (10).

5. The downhole electromagnetic wave signal receiving subsection according to claim 4 is characterized in that: A push rack (30) is telescopically arranged on the receiving mounting seat (10), a return spring (33) is connected between one end of the push rack (30) and the receiving mounting seat (10), a fixing groove is arranged at the other end of the push rack (30), a tooth groove is opened on the fixed shaft (28), an intermediate gear (29) is rotatably arranged between the fixed shaft (28) and the push rack (30), and two sides of the intermediate gear (29) are respectively meshed with the push rack (30) and the fixed shaft (28).

6. The downhole electromagnetic wave signal receiving subsection according to claim 5, characterized in that: A clamping seat (34) is telescopically arranged on the receiving mounting seat (10), a spring (36) is connected between the clamping seat (34) and the receiving mounting seat (10), and lifting wheels (35) are arranged on both sides of the clamping seat (34), the clamping seat (34) cooperates with a fixing groove on the pushing rack (30) to fix the pushing rack (30), and the pushing rack (30) is pushed and controlled by a matching mechanism.

7. The downhole electromagnetic wave signal receiving subsection according to claim 6, characterized in that: The matching mechanism comprises a matching mounting seat (13) arranged on the moving seat (11), a gear ring (20) being rotatably mounted on the matching mounting seat (13), and a second motor (21) being arranged on the matching mounting seat (13), a second gear (22) being arranged on the output shaft of the second motor (21), the second gear (22) being meshed with the gear ring (20), a second screw rod (24) being rotatably mounted on the matching mounting seat (13), a connecting gear (25) being arranged at one end of the second screw rod (24), the connecting gear (25) being meshed with the gear ring (20), one end of the matching shaft (23) and the second screw rod (24) forming a spiral pair, a push plate (26) being arranged at the other end of the matching shaft (23), the push plate (26) being used to push the push rack (30), a lifting rod (27) being arranged on the push plate (26), the lifting rod (27) being used to push the lifting wheel (35) so that the holder (34) is separated from the fixing groove.

8. The downhole electromagnetic wave signal receiving subsection according to claim 1, characterized in that: The inspection mechanism comprises a motor three (39) arranged on a movable seat (11), a gear three (40) being arranged on an output shaft of the motor three (39), an azimuth toothed disc (37) being rotatably mounted on the movable seat (11), the azimuth toothed disc (37) being meshed with the gear three (40), and an ultrasonic detector (38) being arranged on the azimuth toothed disc (37) for inspecting the inner wall of the short section mounting cylinder (2).

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