Rotating drill rod directional construction trajectory measurement and correction device

Abstract

The present invention provides a device for measuring and correcting the deviation of a rotating drill rod directional construction. The device adopts a set structure of a power input shaft, a power output shaft and a positioning and correcting cylinder. The power input shaft is pushed forward, and the outer gear ring on the power input shaft is meshed with the inner gear ring of the power output shaft. The power output shaft rotates with the power input shaft to drive the universal output shaft assembly and the drill bit to rotate. After the drilling construction is completed, the power input shaft moves backward, and the outer gear ring on the power input shaft is meshed with the inner gear ring flange of the positioning and correcting cylinder to drive the positioning and correcting cylinder to rotate. The power output shaft stops rotating and corrects the deviation. There is no need to install and use a screw pump in the coal mine, and the installation and use are more convenient than the existing equipment. The trajectory measurement and correction can be performed during the rotation of the drill rod. When correcting the deviation, only the power input shaft needs to be moved backward. The correction structure is more reasonable, making the large-diameter directional construction in the coal mine easier to operate, and it also has the advantages of high drilling efficiency and drilling accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling rig drill rods, and in particular relates to a rotating drill rod directional construction trajectory measurement and correction device. Background Art

[0002] like Fig.17 As shown, the traditional directional drilling construction principle, the drill rod connection method is: the drill bit 114 is connected to the hydraulic screw pump rotor connector 113, the hydraulic screw pump rotor 112 and the hydraulic screw pump rotor connector 113 have a 1.5 degree rotation swing, during the drilling process, the outer cover stator 111 of the hydraulic screw pump does not move, the drilling rig cylinder 117 pushes the drilling rig power head 116 to push more drill rods and inclination drill rods 118 and the drill bit 114 into the borehole, at the same time, the liquid medium 110 enters along the center hole of the drill rod to push the hydraulic screw pump rotor 112 to rotate, driving the hydraulic screw pump rotor connector 113 and the drill bit 114 to rotate to achieve drilling. During the entire drilling process, the drill rod does not rotate.

[0003] The inclination measurement and correction system is fixed in the inclination measurement drill rod 118. During the entire drilling construction process, the inclination measurement drill rod 118 does not rotate but moves horizontally. It mainly consists of a battery power supply system 101, a test system 102, a transmitting system 103, a test pulse wave 104, a receiving system 105, a demodulation system 106 and a terminal server 107. The test pulse wave 104 transmits signals using a liquid medium 110 as a carrier. According to the test data, the staff rotates and adjusts the position of the outer cover stator 111 of the hydraulic screw pump through the drilling rig power head 116, thereby adjusting the angle of the drill bit 114 to achieve directional construction.

[0004] Traditional directional drilling construction systems have problems:

[0005] 1. During the large-diameter construction process, if the drilling hole is larger than 180mm, the length of the hydraulic screw pump is about 10-12m and the weight is 1200kg, which is inconvenient to install and use in the coal mine.

[0006] 2. During the large-diameter construction process, the hydraulic screw pump requires a liquid flow rate of approximately 300 to 400 liters per second, and it is difficult to supply liquid from the ground to the well.

[0007] 3. Since the drill rod is rotating, the system cannot test the hole while drilling, and accurate positioning construction is difficult.

[0008] 4. The push-type system cannot meet the construction requirements of soft strata, resulting in serious hole collapse and easy drilling and inability to handle.

[0009] At present, the drilling process method of using an external power source to drive the drill rod to rotate is usually adopted in coal mines. Therefore, it is very necessary to solve the problem of a complete set of large-aperture directional construction technology in coal mines. Summary of the invention

[0010] In order to solve the above technical problems, the present invention provides a rotating drill rod directional construction trajectory measurement and correction device.

[0011] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be a general review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0012] The present invention adopts the following technical solution:

[0013] In some optional embodiments, a rotary drill rod directional construction trajectory measurement and correction device is provided, comprising: a power input shaft, a power output shaft and a positioning and correction cylinder, the power input shaft is arranged inside the power output shaft, and the positioning and correction cylinder is sleeved on the outside of the power input shaft and the power output shaft; when drilling, the power input shaft and the power output shaft are meshed for transmission; when correcting the deviation, the power input shaft and the positioning and correction cylinder are meshed for transmission.

[0014] In some optional embodiments, the positioning and correcting cylinder includes: an inner gear ring flange, a correcting and positioning flange, and a correcting inner cylinder sleeved on the outside of the power input shaft and the power output shaft; one end of the correcting inner cylinder is welded to the inner gear ring flange, and the other end is welded to the correcting and positioning flange.

[0015] In some optional embodiments, the positioning and correcting cylinder also includes: an outer correcting cylinder sleeved on the outside of the correcting inner cylinder; a discharge channel is formed between the outer correcting cylinder and the inner correcting cylinder, and a discharge hole identical to the discharge channel is provided on the inner gear ring flange and the correcting positioning flange.

[0016] In some optional embodiments, the power input shaft is a hollow shaft to form an inner channel of the power input shaft, and an outer gear ring that matches the inner gear ring flange is provided on the outer surface of the power input shaft.

[0017] In some optional embodiments, a front chamber, a middle chamber, and a rear chamber are provided inside the power output shaft, and an inner gear ring matched with the outer gear ring of the power input shaft is arranged between the middle chamber and the rear chamber.

[0018] In some optional embodiments, the rotary drill rod directional construction trajectory measurement and correction device also includes: a universal output shaft assembly installed on the front chamber; the universal output shaft assembly includes: a front fixed pressure block, a rear clamping block and a swing output shaft for connecting to the drill bit.

[0019] In some optional embodiments, the rotary drill rod directional construction trajectory measurement and correction device also includes: a drilling inclinometer system; the drilling inclinometer system includes: a turbine generator, a battery, a measurement system, a transmission system, a receiver, a communication interface and a control terminal for data processing and analysis, the turbine generator provides electrical energy, the measurement system transmits the measurement data to the receiver through the transmission system, and the receiver uploads the measurement data to the control terminal.

[0020] In some optional embodiments, the rotary drill rod directional construction trajectory measurement and correction device further includes: a front fixed flange and a rear fixed flange, the front fixed flange and the rear fixed flange are respectively arranged at both ends of the positioning and correction cylinder, and the positioning and correction cylinder is installed on the outside of the power input shaft and the power output shaft through the front fixed flange and the rear fixed flange.

[0021] In some optional embodiments, a reverse discharge hole is opened on the rear fixed flange, and a reverse discharge guide plate is welded on the rear fixed flange.

[0022] The beneficial effects brought by the present invention are as follows: the power input shaft, power output shaft and positioning deviation correction cylinder set structure are adopted, the power input shaft is pushed forward, the outer gear ring on the power input shaft is meshed with the inner gear ring of the power output shaft, the power output shaft rotates with the power input shaft, thereby driving the universal output shaft assembly and the drill bit to rotate, and the drilling construction is completed, the power input shaft moves backward, the outer gear ring on the power input shaft is meshed with the inner gear ring flange of the positioning deviation correction cylinder to drive the positioning deviation correction cylinder to rotate, the power output shaft stops rotating, and deviation correction is performed. There is no need to install and use a screw pump in the coal mine, and the installation and use are more convenient than the existing equipment; trajectory measurement and deviation correction can be performed during the rotation of the drill rod. When correcting the deviation, only the power input shaft needs to be moved backward, and the deviation correction structure is more reasonable, making the large-diameter directional construction in the coal mine easier to operate, and it also has the advantages of high drilling efficiency and drilling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a rotation drill rod directional construction trajectory measurement and correction device of the present invention;

[0024] Figure 2 It is a schematic structural diagram of the inner gear ring flange of the positioning and deviation correction cylinder of the present invention;

[0025] Figure 3 It is a schematic diagram of the coordination of the positioning and correcting cylinder, the power input shaft and the power output shaft of the present invention;

[0026] Figure 4 It is a schematic diagram of the positions of the positioning and correction cylinder and the inner gear ring of the power output shaft of the present invention;

[0027] Figure 5It is a schematic diagram of the end surface structure of the positioning and deviation correction cylinder of the present invention;

[0028] Figure 6 It is a schematic diagram of the axial cross-sectional structure of the positioning and deviation-correcting cylinder of the present invention;

[0029] Figure 7 It is a schematic structural diagram of the power input shaft of the present invention;

[0030] Figure 8 It is a schematic cross-sectional structure diagram of the outer gear ring of the power input shaft of the present invention;

[0031] Fig. 9 It is a schematic diagram of the axial cross-sectional structure of the power output shaft of the present invention;

[0032] Fig.10 It is a schematic cross-sectional structure diagram of the inner gear ring of the power output shaft of the present invention;

[0033] Fig.11 It is a structural schematic diagram of the universal output shaft assembly of the present invention;

[0034] Fig.12 It is a front structural schematic diagram of the universal output shaft assembly of the present invention;

[0035] Fig.13 It is a schematic diagram of the front structure of the rear fixing flange of the present invention;

[0036] Fig.14 It is a schematic diagram of the axial cross-sectional structure of the rear fixing flange of the present invention;

[0037] Fig.15 It is a schematic diagram of the principle of the inclination measurement while drilling system of the present invention;

[0038] Fig.16 It is a schematic diagram of the working principle of the rotary drill rod directional construction trajectory measurement and correction device of the present invention;

[0039] Fig.17 It is a schematic diagram of the traditional directional drilling construction principle. DETAILED DESCRIPTION

[0040] The following description and accompanying drawings fully demonstrate specific embodiments of the present invention so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent possible variations only. Unless clearly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments.

[0041] like Figures 1 to 16As shown, a rotary drill rod directional construction trajectory measurement and correction device is provided, including: a power input shaft 1, a power output shaft 2, a positioning and correction cylinder 3, a rear fixed flange 4, a front fixed flange 5, a universal output shaft assembly 6, a drilling inclinometer system 7 and a follow-up drill rod 33.

[0042] The power input shaft 1 is arranged inside the power output shaft 2, and its position is limited by the rear fixing flange 4. The positioning and correcting cylinder 3 is sleeved on the outside of the power input shaft 1 and the power output shaft 2, and is positioned and fixed by the rear fixing flange 4 and the front fixing flange 5. The front fixing flange 5 and the rear fixing flange 4 are respectively arranged at both ends of the positioning and correcting cylinder 3. The positioning and correcting cylinder 3 is installed on the outside of the power input shaft 1 and the power output shaft 2 through the front fixing flange 5 and the rear fixing flange 4, that is, the power input shaft 1, the power output shaft 2 and the positioning and correcting cylinder 3 are assembled together.

[0043] The universal output shaft assembly 6 is arranged at the end of the power output shaft 2 and connected to the drill bit 8 to drive the drill bit 8 to rotate together. The drilling inclination measurement system 7 is installed in the power input shaft 1 or in the follow-up drill rod 33 connected to the power input shaft 1.

[0044] like Figure 5 and 6 As shown, the positioning and correcting cylinder 3 includes: an inner gear ring flange 9, a correcting and positioning flange 11, a correcting inner cylinder 12 and a correcting outer cylinder 10. The correcting inner cylinder 12 is sleeved on the outside of the power input shaft 1 and the power output shaft 2, one end of the correcting inner cylinder 12 is welded to the inner gear ring flange 9, and the other end is welded to the correcting and positioning flange 11. The correcting outer cylinder 10 is sleeved on the outside of the correcting inner cylinder 12, and a discharge channel 13 is formed between the correcting outer cylinder 10 and the correcting inner cylinder 12. The inner gear ring flange 9 and the correcting and positioning flange 11 are provided with a discharge hole 35 that is the same as the discharge channel 13, so as to facilitate discharge.

[0045] like Figure 7 and 8 As shown, the power input shaft 1 is a hollow shaft to form an inner channel 15 of the power input shaft, and an outer ring gear 14 adapted to the inner ring gear flange 9 is arranged on the outer surface of the power input shaft. Adaptation means that the outer ring gear 14 of the power input shaft can mesh with the inner ring gear flange 9 of the positioning and correcting cylinder 3, thereby driving the positioning and correcting cylinder 3 to rotate.

[0046] like Fig. 9 and 10 As shown, a front chamber 16, a middle chamber 17 and a rear chamber 19 are provided inside the power output shaft 2, and an inner gear ring 18 matched with the outer gear ring 14 of the power input shaft is arranged between the middle chamber 17 and the rear chamber 19. The matching means that the inner gear ring 18 of the power output shaft 2 can mesh with the outer gear ring 14 of the power input shaft, so that the power input shaft 1 drives the power output shaft 2 to rotate.

[0047] like Fig.11 and12 As shown, the universal output shaft assembly 6 includes: a front fixed pressure block 21, a rear clamping block 22 and a swing output shaft 20 for connecting with the drill bit 8. The universal output shaft assembly 6 is bolted to the power output shaft 2 through the rear clamping block 22, that is, the universal output shaft assembly 6 is installed on the front chamber 16. When the power output shaft 2 rotates, the universal output shaft assembly 6 is driven to rotate, thereby driving the drill bit 8 to rotate. The swing output shaft 20 is spherically matched with the front fixed pressure block 21 and the rear clamping block 22. The swing output shaft 20 is used in conjunction with the front fixed pressure block 21 and the rear clamping block 22 through a universal joint, so that the universal output shaft assembly 6 is used as a universal coupling to connect the power output shaft 2 and the drill bit 8 together. Therefore, the swing output shaft 20 and the front fixed pressure block 21 have a certain angle of rotation angle α.

[0048] like Fig.13 and 14 As shown, a reverse discharge hole 23 is provided on the rear fixed flange 4, and a reverse discharge guide plate 24 is welded on the rear fixed flange 4 to facilitate reverse discharge.

[0049] like Fig.15 As shown, the inclination measurement while drilling system 7 uses the drilling fluid pressure pulse method to transmit the drilling information in the form of pressure pulses through the channel, including: a turbine generator 25, a battery 26, a measuring system 27, a transmitting system 28, a receiver 30, a communication interface 31 and a control terminal 32 for data processing and analysis. The inclination measurement while drilling system 7 is powered by the turbine generator 25 and uses positive pulse grouting waves 29 for wireless communication. The medium 34 flows through the channel 15 in the power input shaft to drive the turbine generator 25 to generate electricity and charge the battery 26. The battery 26 then powers the measuring system 27 and the transmitting system 28, and forms a positive pulse grouting wave 29 for the test drilling of the measuring system 27. The medium 34 is used as a carrier to be transmitted from the advancing drill pipe 33. The receiver 30 receives the positive pulse grouting wave 29 and provides it to the communication interface 31 and finally to the control terminal 32. The control terminal 32 completes the overall calculation of the system and calculates the offset from the initial data. The measuring system 27, transmitting system 28, receiver 30, communication interface 31 and control terminal 32 all use the equipment used in the existing drilling inclination measurement system, so the specific structure is not described in detail in this article. The use of turbine generator 25 avoids the inconvenience of reciprocating disassembly and charging of battery 26, ensuring the construction time; the drilling inclination measurement system 7 uses positive pulse grouting wireless communication to transmit test data, and the system is powered by turbine generator 25 to ensure the power supply of the underground construction system, and the construction is not affected by the battery capacity.

[0050] The working process of the rotary drill rod directional construction trajectory measurement and correction device of the present invention is as follows:

[0051] Medium transmission cooling: The medium 34 enters the channel 15 in the power input shaft from the channel 36 in the follow-up drill pipe, flows through the middle chamber 17 and the front chamber 16 of the power output shaft, and enters the drill bit 8 through the channel 37 in the universal output shaft assembly, thereby cooling the drill bit 8 during the drilling process.

[0052] Drilling process of the drilling rig: As the drill rod 33 advances and rotates, the power input shaft 1 is driven to rotate, and the outer gear ring 14 of the power input shaft is engaged with the inner gear ring 18 of the power output shaft to drive the power output shaft 2 to rotate, and the power output shaft 2 drives the drill bit 8 to rotate through the universal output shaft assembly 6 to realize drilling construction.

[0053] During the measurement while drilling process, the medium 34 flows through the channel 15 in the power input shaft to drive the turbine generator 25 to generate electricity and charge the battery 26. The battery 26 then supplies power to the measurement system 27 and the transmission system 28. The measurement system 27 forms a positive pulse grouting wave 29 for testing the drilling. The wave is transmitted from the drilling rod 33 with the medium 34 as the carrier. The receiver 30 receives the positive pulse grouting wave 29 and provides it to the communication interface 31 to the control terminal 32. The control terminal 32 completes the overall calculation of the system and calculates the offset from the initial data.

[0054] Directional correction: According to the calculation data provided by the drilling inclinometer system 7, if the calculated value deviates from the initial measured value, the drill pipe 33 moves back, driving the power input shaft 1 to move back, and the outer gear ring 14 of the power input shaft engages with the inner gear ring flange 9 of the positioning correction cylinder 3. The rotation of the drill pipe 33 drives the power input shaft 1 to rotate, thereby driving the positioning correction cylinder 3 to rotate, and the power output shaft 2 stops and corrects the deviation. After the correction, the drill pipe 33 moves forward, driving the power input shaft 1 to engage with the inner gear ring 18 of the power output shaft, thereby driving the power output shaft 2 to rotate, and drilling starts again.

[0055] The deviation correction is achieved by rotating the swing output shaft 20 on the universal output shaft assembly 6 and the central axis of the power output shaft 2 at a certain angle.

[0056] Those skilled in the art will also appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in conjunction with the embodiments herein can all be implemented as electronic hardware, computer software, or a combination thereof. In order to clearly illustrate the interchangeability between hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above around their functions. Whether such functions are implemented as hardware or software depends on specific applications and the design constraints imposed on the entire system. A skilled person can implement the described functions in an alternative manner for each specific application, but such implementation decisions should not be interpreted as departing from the scope of protection of the present disclosure.

Claims

1. A device for measuring and correcting the deviation of the rotating drill rod directional construction trajectory, characterized in that: include: Power input shaft, power output shaft and positioning and deviation correction cylinder; The power input shaft is arranged inside the power output shaft, and the positioning and correcting cylinder is sleeved on the outside of the power input shaft and the power output shaft; the power input shaft is a hollow shaft to form an inner channel of the power input shaft, and an outer gear ring matching the inner gear ring flange is arranged on the outer surface of the power input shaft; The power output shaft has a front chamber, a middle chamber and a rear chamber, and an inner gear ring that matches the outer gear ring of the power input shaft is arranged between the middle chamber and the rear chamber; The positioning and correcting cylinder comprises: an inner gear ring flange, a correcting and positioning flange, a correcting inner cylinder sleeved on the outside of the power input shaft and the power output shaft, and a correcting outer cylinder sleeved on the outside of the correcting inner cylinder; one end of the correcting inner cylinder is welded to the inner gear ring flange, and the other end is welded to the correcting and positioning flange; a discharge channel is formed between the correcting outer cylinder and the correcting inner cylinder, and a discharge hole identical to the discharge channel is provided on the inner gear ring flange and the correcting and positioning flange; When drilling, the power input shaft meshes with the power output shaft for transmission; when correcting deviation, the power input shaft meshes with the positioning and correcting cylinder for transmission; Working process of the rotary drill rod directional construction trajectory measurement and correction device: Medium transmission cooling: The medium enters the channel inside the power input shaft from the inner channel of the follow-up drill pipe, flows through the middle chamber and front chamber of the power output shaft, and enters the drill bit through the inner channel of the universal output shaft assembly, thereby cooling the drill bit during the drilling process; Drilling process of the drilling rig: As the drill rod advances and rotates, the power input shaft rotates. The outer gear ring of the power input shaft meshes with the inner gear ring of the power output shaft to drive the power output shaft to rotate. The power output shaft drives the drill bit to rotate through the universal output shaft assembly to realize drilling construction; During the measurement while drilling process: the medium flows through the channel in the power input shaft to drive the turbine generator to generate electricity and charge the battery. The battery then powers the measurement system and the transmission system. The test borehole of the measurement system forms a positive pulse grouting wave, which is transmitted from the drilling rod with the medium as the carrier. The receiver receives the positive pulse grouting wave and provides it to the communication interface to the control terminal. The control terminal completes the overall calculation of the system and calculates the offset from the initial data. Directional correction: According to the calculation data provided by the drilling inclinometer system, if the calculated value deviates from the initial measured value, the drill pipe will move back, driving the power input shaft to move back, and the outer gear ring of the power input shaft will engage with the inner gear ring flange of the positioning correction cylinder. The rotation of the drill pipe will drive the power input shaft to rotate, thereby driving the positioning correction cylinder to rotate, and the power output shaft will stop and correct the deviation. After the correction, the drill pipe will move forward, driving the power input shaft to engage with the inner gear ring of the power output shaft, thereby driving the power output shaft to rotate, and drilling will start again.

2. The rotary drill rod directional construction trajectory measurement and correction device according to claim 1 is characterized in that: Also includes: a universal output shaft assembly mounted on the front chamber; The universal output shaft assembly comprises: a front fixed pressing block, a rear pressing block and a swing output shaft for connecting with a drill bit.

3. The rotary drill rod directional construction trajectory measurement and correction device according to claim 2 is characterized in that: Also includes: Inclinometer while drilling system; The inclination measurement while drilling system includes: a turbine generator, a battery, a measurement system, a transmission system, a receiver, a communication interface and a control terminal for data processing and analysis. The turbine generator provides electrical energy, and the measurement system transmits measurement data to the receiver through the transmission system, and the receiver uploads the measurement data to the control terminal.

4. The rotary drill rod directional construction trajectory measurement and correction device according to claim 3 is characterized in that: Also includes: A front fixing flange and a rear fixing flange, wherein the front fixing flange and the rear fixing flange are respectively arranged at both ends of the positioning and correcting cylinder, and the positioning and correcting cylinder is installed on the outside of the power input shaft and the power output shaft through the front fixing flange and the rear fixing flange.

5. The rotary drill rod directional construction trajectory measurement and correction device according to claim 4 is characterized in that: A reverse discharge hole is provided on the rear fixed flange, and a reverse discharge guide plate is welded on the rear fixed flange.

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