Conductive and data two-way transmission device and system

Abstract

A conductive and data two-way transmission device comprises a shell, a first cavity and a second cavity which are in threaded connection are formed in the shell, a first conductive part, a first circuit bin and a magnetic coupling mandrel are sequentially arranged in the first cavity in the transverse direction, and a first coil is wound around the portion, located in the first cavity, of the magnetic coupling mandrel; a first circuit module is arranged in the first circuit bin, the first conductive part and the first coil are electrically connected with the first circuit module, a magnetic coupling cavity, a second circuit bin and a second conductive part are sequentially arranged in the second cavity in the transverse direction, and a second coil is wound on the magnetic coupling cavity. The electromagnetic induction generated after the first coil is electrified is transmitted to the magnetic coupling cavity through the magnetic coupling mandrel and is coupled with the electromagnetic induction generated by the second coil, so that reliable transmission of electric energy and data under the conditions of strong vibration and large camber of a drilling well is realized; the problems that an existing while-drilling instrument and an instrument short section are connected in a contact mode through a conductive slip ring or a contact pin and are not reliable and prone to damage are solved.

Description

Technical Field

[0001] The invention belongs to the field of drilling, and in particular relates to a conductive and data bidirectional transmission device and system. Background Art

[0002] With the rapid development of the economy, domestic oil and gas demand continues to grow. In the face of the severe oil and gas demand situation in the market, it is necessary to increase the pace of oil and gas resource exploration and development. The wide application of drilling instruments in the drilling field has promoted the development and application of new drilling technologies and processes to more complex areas and deeper layers, greatly improving drilling efficiency and oil and gas well production effects. The functions of drilling instruments are gradually enhanced, and the number of drilling instrument function short sections is also gradually increasing. At present, the connection between different instruments and short sections is mostly through conductive slip rings and pin contact connection methods, but in the case of strong vibration and large curvature of drilling, the conductive slip rings and pin contacts are easily deformed and broken, resulting in the signal not being able to communicate normally. Summary of the invention

[0003] In view of the above problems, the present invention provides a conductive and data bidirectional transmission device to achieve bidirectional data communication and conductivity between downhole drilling instruments and instrument short sections, thereby solving the problems of unreliable and easily damaged connection between existing drilling instruments and instrument short sections through conductive slip rings or pin contact connections.

[0004] A conductive and data bidirectional transmission device comprises a shell, wherein a first cavity and a second cavity connected by threads are provided in the shell, a first conductive member, a first circuit compartment and a magnetic coupling core shaft are provided in the first cavity in sequence along the horizontal direction, a first coil is wound around a portion of the magnetic coupling core shaft located in the first cavity, a first circuit module is provided in the first circuit compartment, the first conductive member and the first coil are both electrically connected to the first circuit module, a magnetic coupling cavity, a second circuit compartment and a second conductive member are provided in sequence along the horizontal direction in the second cavity, a second coil is wound around the magnetic coupling cavity, a part of the magnetic coupling core shaft is inserted in the magnetic coupling cavity and forms a closed magnetic conductive loop, the first coil is coupled to the second coil, a second circuit module is provided in the second circuit compartment, the second conductive member and the second coil are both electrically connected to the second circuit module, and the first circuit module is connected to the second circuit module by electrical signals.

[0005] The first conductive member includes a first male socket, a first female socket and a first lead, the first lead is connected to a lead terminal of the first male socket, the male connector of the first male socket is inserted into the female connector of the first female socket, and the lead terminal of the first female socket is electrically connected to the first circuit module.

[0006] A first via hole is disposed in the first cavity, and a first coil is disposed in the first via hole.

[0007] The second conductive member includes a second female socket, a second male socket and a second lead, the second lead is connected to the lead terminal of the second male socket, the male connector of the second male socket is inserted into the female connector of the second female socket, and the lead terminal of the second female socket is electrically connected to the second circuit module.

[0008] A second via hole is disposed in the second cavity, and a second coil is disposed in the second via hole.

[0009] The housing comprises a first protective shell and a second protective shell which are detachably connected. A first cavity is provided in the first protective shell, and a second cavity is provided in the second protective shell.

[0010] One end of the first cavity located at the magnetic coupling core shaft is a connector, and one end of the second cavity located at the magnetic coupling cavity is provided with a connecting groove, and the connector is detachably connected to the connecting groove.

[0011] A conductive and bidirectional data transmission system, wherein the first conductive member is used to conduct electricity to a first circuit module and to transmit data between the first circuit module and the first circuit module, the first circuit module is used to transmit data between the first conductive member and a first coil, the first coil is used to couple with a second coil to transmit electric energy and to transmit analog signals between the first circuit module and the second circuit module, the second coil is used to transmit analog signals between the first coil and the second circuit module, the second circuit module is used to conduct electricity to a second conductive member and to transmit data between the second coil and the second conductive member, and the second conductive member is used to transmit data with the second circuit module.

[0012] The first circuit module includes a first power management circuit, and the power management circuit is electrically connected to an inverter circuit, a first load, a first isolation transformer, a first limiting filter demodulation module, a first modulation and amplification module, a first CPU and its peripheral circuits and a first serial interface circuit in sequence. The power input end of the first power management circuit is connected to the drilling instrument through a first lead of a first conductive member, wherein the first limiting filter demodulation module and the first modulation and amplification module are coupled and connected to the inverter circuit through a first isolation transformer respectively, a first load and a first coil are connected in series between the inverter circuit and the first isolation transformer, a transmitting end and a receiving end of the first serial interface circuit are both connected to the drilling instrument through a first lead of the first conductive member, the first serial interface circuit is electrically connected to the first CPU and its peripheral circuits, an output end of the first CPU and its peripheral circuits is connected to an input end of the first modulation and amplification module, and an input end of the first CPU and its peripheral circuits is connected to the first limiting filter demodulation module.

[0013] The second circuit module includes a second power management circuit, and the second power management circuit is electrically connected to a rectifier circuit, a second load, a second limiting filter demodulation module, a second modulation and amplification module, a second CPU and its peripheral circuits, and a second serial interface circuit in sequence. The output end of the second power management circuit is electrically connected to an instrument short section through a second lead of a second conductive member, wherein the second limiting filter demodulation module and the second modulation and amplification module are respectively coupled to the rectifier circuit through a second isolation transformer, a second load and a second coil are connected in series between the rectifier circuit and the second isolation transformer, a transmitting end and a receiving end of the second serial interface circuit are both connected to the instrument short section through the second lead of the second conductive member, the second serial interface circuit is electrically connected to the second CPU and its peripheral circuits, the output end of the second CPU and its peripheral circuits is connected to the input end of the second modulation and amplification module, and the input end of the second CPU and its peripheral circuits is connected to the second limiting filter demodulation module.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1) The electromagnetic induction generated by the first coil after being energized in the present invention is transmitted to the magnetic coupling cavity through the magnetic coupling core shaft and coupled with the electromagnetic induction generated by the second coil, thereby realizing the reliable transmission of electric energy and data under the conditions of strong vibration and large curvature of drilling, and solving the problem of unreliable and easy damage of the existing connection method between the drilling instrument and the instrument short section through the conductive slip ring or pin contact.

[0016] 2) The present invention realizes the direct connection between the measurement while drilling instrument and the short section without wires through coupling, and has strong adaptability and long service life.

[0017] 3) The magnetic coupling core shaft in the present invention is inserted into the magnetic coupling cavity to form a closed magnetic conductive loop, thereby ensuring the reliable transmission of electric energy and data.

[0018] 4) The present invention realizes the transmission of power and data between the measurement while drilling instrument and the short section through coupling, and can also be used alone for the transmission of power or signals, thus increasing the selectivity.

[0019] 5) The present invention realizes the connection between different downhole instruments or between downhole instruments and instrument short sections through the input end of the first power management circuit, the transmitting end and the receiving end of the first serial interface circuit, the output end of the inverter circuit, the input end of the rectifier, the output end of the second power management circuit, the transmitting end and the output end of the second serial interface circuit, the first lead and the second lead.

[0020] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic structural diagram of a device for bidirectional transmission of electrical conduction and data is shown;

[0023] Figure 2 shows a schematic structural diagram of the first cavity;

[0024] Figure 3 shows a schematic structural diagram of the second cavity;

[0025] Figure 4 A schematic diagram of a bidirectional transmission system for electrical conduction and data is shown;

[0026] Figure 5 shows a schematic diagram of a first circuit module;

[0027] Figure 6 shows a schematic diagram of a second circuit module;

[0028] Figure 7 A schematic structural diagram of a first isolation transformer is shown.

[0029] Figure numerals: 1, shell; 11, first protective shell; 12, second protective shell; 2, first cavity; 21, first lead; 22, first male socket; 23, first female socket; 24, first circuit compartment; 25, first through hole; 26, magnetic coupling mandrel; 261, connector; 2611, first connecting section; 2612, second connecting section; 2613, sealing ring; 27, first coil; 3, second cavity; 31, connecting groove; 311, first thread groove; 312, second thread groove; 32, magnetic coupling cavity; 33, second coil; 34, second through hole; 35, second circuit compartment; 36, second female socket; 37, second male socket; 38, second lead; 4, drilling instrument ;5. First circuit module;51. First power management circuit;52. Inverter circuit;53. First load;54. First isolation transformer;541. Primary coil;542. Transmitting coil;543. Receiving coil;55. First limiting filter demodulation module;56. First modulation amplification module;57. First CPU and its peripheral circuits;58. First serial interface circuit;6. Second circuit module;61. Rectification circuit;62. Second power management circuit;63. Second load;64. Second isolation transformer;65. Second limiting filter demodulation module;66. Second modulation amplification module;67. Second CPU and its peripheral circuits;68. Second serial interface circuit;7. Instrument short section. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Figure 1 The schematic diagram of the structure of the conductive and data bidirectional transmission device is shown; Figure 1 As shown, a conductive and bidirectional data transmission device comprises a housing 1, wherein a first cavity 2 and a second cavity 3 connected by threads are provided in the housing 1. Figure 2 Schematic diagram of the structure of the first cavity 2 is shown; Figure 2 As shown, the first cavity 2 is provided with a first conductive member, a first circuit compartment 24, and a magnetic coupling mandrel 26 in sequence along the lateral direction, the magnetic coupling mandrel 26 is wound with a first coil 27 at a position located in the first cavity 2, the first circuit compartment 24 is provided with a first circuit module 5, and the first conductive member and the first coil 27 are both electrically connected to the first circuit module 5. Figure 3 Schematic diagram of the structure of the second cavity 3 is shown; Figure 3As shown, a magnetic coupling cavity 32, a second circuit compartment 35, and a second conductive member are sequentially arranged in the second cavity 3 along the lateral direction, a second coil 33 is wound around the magnetic coupling cavity 32, a part of the magnetic coupling core shaft 26 is inserted in the magnetic coupling cavity 32 to form a closed magnetic conductive circuit, the first coil 27 is coupled with the second coil 33, a second circuit module 6 is arranged in the second circuit compartment 35, the second conductive member and the second coil 33 are both electrically connected to the second circuit module 6, and the first circuit module 5 is electrically connected to the second circuit module 6.

[0032] The conductive and data bidirectional transmission device, the electromagnetic induction generated by the first coil 27 after being energized is transmitted to the magnetic coupling cavity 32 through the magnetic coupling core shaft 26 and coupled with the electromagnetic induction generated by the second coil 33, realizes the reliable transmission of electric energy and data under the conditions of strong vibration and large curvature of drilling.

[0033] Specifically, a portion of the magnetic coupling core shaft 26 is inserted into the magnetic coupling cavity 32 to ensure connectivity and also ensure smooth coupling of electrical energy and data.

[0034] Specifically, the first cavity 2 and the second cavity 3 are detachably connected, which ensures connectivity and provides a closed space for the magnetic coupling core shaft 26 and the coupling cavity, thus providing conditions for coupling.

[0035] In some embodiments, the first conductive member includes a first male socket 22, a first female socket 23 and a first lead 21, the first lead 21 is connected to the lead terminal of the first male socket 22, the male connector of the first male socket 22 is inserted into the female connector of the first female socket 23, and the lead terminal of the first female socket 23 is electrically connected to the first circuit module 5; the first lead 21 is used to access an external power supply and transmit the power to the first male socket 22, the first female socket 23 and the first circuit module 5 in sequence, the lead terminal of the first male socket 22 is used to connect to the first lead 21 to facilitate the transmission of electrical energy; the male connector of the first male socket 22 is connected to the female connector of the first female socket 23 for transmitting electrical energy; the lead terminal of the first female socket 23 is connected to the first circuit module 5, and can conduct electricity for the first circuit module 5.

[0036] In some embodiments, a first via hole 25 is provided in the first cavity 2 , and a first coil 27 is placed in the first via hole 25 ; the first coil 27 passes through the first via hole 25 and is connected to the first circuit module 5 , and the first via hole 25 provides connection conditions.

[0037] In some embodiments, the second conductive member includes a second female socket 36, a second male socket 37 and a second lead 38, the second lead 38 is connected to the lead terminal of the second male socket 37, the male connector of the second male socket 37 is inserted into the female connector of the second female socket 36, and the lead terminal of the second female socket 36 is electrically connected to the second circuit module 6; the lead terminal of the second female socket 36 transmits the electricity of the second circuit module 6 to the second male socket 37 and the second lead 38 in sequence; the male connector of the second male socket 37 is connected to the female connector of the second female socket 36 for transmitting electrical energy; the lead terminal of the second male socket 37 is connected to the second lead 38 for transmitting electrical energy, and the second lead 38 terminal is used to connect to external equipment and transmit power.

[0038] In some embodiments, a second via hole 34 is disposed in the second cavity 3 , and a second coil 33 is disposed in the second via hole 34 ; the second coil 33 passes through the second via hole 34 and is connected to the second circuit module 6 , and the second via hole 34 provides connection conditions.

[0039] In some embodiments, the shell 1 includes a first protective shell 11 and a second protective shell 12 that are detachably connected. A first cavity 2 is provided in the first protective shell 11, and a second cavity 3 is provided in the second protective shell 12. The first protective shell 11 protects the first cavity 2; the second protective shell 12 protects the second cavity 3.

[0040] Specifically, the first protective shell 11 and the second protective shell 12 may be connected by threads but are not limited thereto.

[0041] In some embodiments, the first cavity 2 is located at one end of the magnetic coupling core shaft 26 and is provided with a connecting head 261, and the second cavity 3 is located at one end of the magnetic coupling cavity 32 and is provided with a connecting groove 31, and the connecting head 261 and the connecting groove 31 are detachably connected; the connecting head 261 and the connecting groove 31 are detachably connected, which is convenient for manual disassembly and installation, thereby improving convenience and installation efficiency.

[0042] In some embodiments, the connector 261 includes a first connecting segment 2611 and a second connecting segment 2612 which are sequentially arranged in the transverse direction, and the diameter of the first connecting segment 2611 is larger than the diameter of the second connecting segment 2612; the staged connection can make the connector 261 and the connecting groove 31 more connectable.

[0043] Specifically, both the first connecting section 2611 and the second connecting section 2612 are provided with threads.

[0044] In some embodiments, a sealing ring 2613 is embedded in both the first connecting section 2611 and the second connecting section 2612; the sealing ring 2613 can ensure the sealing of the connecting head 261 and the connecting groove 31 after being connected, thereby providing sealing conditions.

[0045] In some embodiments, the connecting groove 31 includes a first thread groove 311 and a second thread groove 312 which are connected in sequence along the horizontal direction, the diameter of the first thread groove 311 is larger than the diameter of the second thread groove 312, the second connecting section 2612 is threadedly connected to the second thread groove 312, and the first connecting section 2611 is connected to the first thread groove 311; the staged connection can make the connectivity between the connecting head 261 and the connecting groove 31 better.

[0046] Figure 4 Figure 1 shows a schematic diagram of a bidirectional transmission system for electrical conduction and data. Figure 4 As shown, a bidirectional conduction and data transmission system, the first conductive member is used to conduct electricity to the first circuit module 5 and transmit data to the first circuit module 5, the first circuit module 5 is used to transmit data between the first conductive member and the first coil 27, the first coil 27 is used to couple with the second coil 33 to transmit electric energy and transmit analog signals between the first circuit module 5 and the second circuit module 6, the second coil 33 is used to transmit analog signals between the first coil 27 and the second circuit module 6, the second circuit module 6 is used to conduct electricity to the second conductive member and transmit data between the second coil 33 and the second conductive member, and the second conductive member is used to transmit data to the second circuit module 6; while drilling instrument 4 The power supply and communication signal lines are connected to the first circuit module 5 through the first conductive member. The first circuit module 5 couples the power supply and signal to the second coil 33 through the first coil 27, and then transmits them to the second circuit module 6 and the instrument short section 7 in sequence through the second coil 33. The instrument short section 7 then transmits the signal to the drilling instrument 4 in reverse through the second circuit module 6, the second coil 33, the first coil 27 and the first circuit module 5. The data and power are transmitted by coupling the first coil 27 and the second coil 33, which can avoid the problem that the existing drilling instrument 4 and the instrument short section 7 are unreliable and easy to damage through the conductive slip ring or pin contact connection method; the drilling instrument 4 can supply power to the first circuit module 5 and the second circuit 6 module.

[0047] Figure 5 FIG. 5 shows a schematic diagram of the first circuit module 5. Figure 5As shown, in some embodiments, the first circuit module 5 includes a first power management circuit 51, and the power management circuit is electrically connected to an inverter circuit 52, a first load 53, a first isolation transformer 54, a first limiting filter demodulation module 55, a first modulation and amplification module 56, a first CPU and its peripheral circuit 57 and a first serial interface circuit 58 in sequence. The power input end of the first power management circuit 51 is connected to the drilling instrument 4 through the first lead 21 of the first conductive member, wherein the first limiting filter demodulation module 55 and the first modulation and amplification module 56 are coupled to the inverter circuit 52 through the first isolation transformer 54, respectively, and the first load 53 and the first coil 27 are connected in series between the inverter circuit 52 and the first isolation transformer 54. The first serial interface circuit The transmitting end and the receiving end of 58 are both connected to the drilling instrument 4 through the first lead 21 of the first conductive member, the first serial interface circuit 58 is electrically connected to the first CPU and its peripheral circuit 57, the output end of the first CPU and its peripheral circuit 57 is connected to the input end of the first modulation and amplification module 56, and the input end of the first CPU and its peripheral circuit 57 is connected to the first limiting filter demodulation module 55; the power input end of the first power management circuit 51 is connected to the power line of the drilling instrument 4 through the first lead 21 of the first conductive member, and can provide power for the inverter circuit 52, the first load 53, the first isolation transformer 54, the first limiting filter demodulation module 55, the first modulation and amplification module 56, the first CPU and its peripheral circuit 57, the first serial interface circuit 58 and the second circuit module 6.

[0048] Specifically, the inverter can invert the DC output of the power management circuit into AC and then output it to the low load, the first isolation transformer 54, the first limiting filter demodulation module 55, the first modulation and amplification module 56, the first CPU and its peripheral circuits 57, the first serial interface circuit 58 and the first coil 27; the first coil 27 couples the electrical and analog signals to the second coil 33; the first serial interface circuit 58 is used to transmit signals between the drilling instrument 4 and the first CPU and its peripheral circuits 57; the first CPU and its peripheral circuits 57 are used to process data and transmit it to the first modulation and amplification module 56; the first modulation and amplification module 56 is used to modulate the data and connect the modulated analog signal to the first isolation transformer 54; the first isolation transformer 54 is used to transmit the signal to the first load 53; the first load 53 processes the signal and transmits it to the first coil 27, and is coupled to the second circuit module 6 through the first coil 27.

[0049] Specifically, the transmitting end of the first modulation and amplification module 56 is connected to the transmitting coil 542 of the first isolation transformer 54, the access end of the first limiting filter demodulation module 55 is connected to the receiving coil 543 of the first isolation transformer 54, and the primary coil 541 of the first isolation transformer 54 is electrically connected to the first load 53.

[0050] Specifically, the input end of the first power management circuit 51 includes a positive input end and a negative output end, and the input end of the first power management circuit 51 includes a positive input end and a negative output end, and both are connected to the power line of the drilling instrument 4 through the first lead 21 of the first conductive member.

[0051] Specifically, the output end of the first power management circuit 51 includes a positive output end and a negative output end.

[0052] Specifically, the second limiting filter adjustment module is used to demodulate data, and the demodulated data is input to the second CPU and its peripheral circuit 67 .

[0053] Figure 6 FIG. 4 shows a schematic diagram of the second circuit module 6. Figure 6 As shown, in some embodiments, the second circuit module 6 includes a second power management circuit 62, and the second power management circuit 62 is electrically connected with a rectifier circuit 61, a second load 63, a second limiting filter demodulation module 65, a second modulation and amplification module 66, a second CPU and its peripheral circuit 67, and a second serial interface circuit 68 in sequence, and the output end of the second power management circuit 62 is electrically connected to the instrument short section 7 through the second lead 38 of the second conductive member, wherein the second limiting filter demodulation module 65 and the second modulation and amplification module 66 are coupled to the rectifier circuit 61 through the second isolation transformer 64, respectively, and the second load 63 is connected in series between the rectifier circuit 61 and the second isolation transformer 64. and the second coil 33, the transmitting end and the receiving end of the second serial interface circuit 68 are connected to the instrument short section 7 through the second lead 38 of the second conductive member, the second serial interface circuit 68 is electrically connected to the second CPU and its peripheral circuit 67, the output end of the second CPU and its peripheral circuit 67 is connected to the input end of the second modulation and amplification module 66, and the input end of the second CPU and its peripheral circuit 67 is connected to the second limiting filter demodulation module 65; the second power management circuit 62 can conduct electricity for the rectifier circuit 61, the second load 63, the second limiting filter demodulation module 65, the second modulation and amplification module 66, the second CPU and its peripheral circuit 67, the second serial interface circuit 68 and the instrument short section 7.

[0054] Specifically, the rectifier circuit 61 can convert AC power into DC power and transmit the DC power to the second power management circuit 62 for processing; the second coil 33 is used to couple electricity and analog signals to the first coil 27; the second serial interface circuit 68 is used to transmit signals between the instrument short section 7 and the second CPU and its peripheral circuit 67; the second CPU and its peripheral circuit 67 are used to process data and transmit it to the second modulation and amplification module 66; the second modulation and amplification module 66 is used to modulate data and connect the modulated analog signal to the second isolation transformer 64; the second isolation transformer 64 is used to transmit the signal to the second load 63; the second load 63 processes the signal and transmits it to the second coil 33, and is coupled to the first coil 27 through the second coil 33.

[0055] Specifically, the second limiting filter adjustment module is used to demodulate data, and the demodulated data is input to the second CPU and its peripheral circuit 67 .

[0056] Specifically, the transmitting end of the second modulation and amplification module 66 is connected to the transmitting coil 542 of the second isolation transformer 64, the access end of the second limiting filter demodulation module 65 is connected to the receiving coil 543 of the second isolation transformer, and the primary coil 541 of the second isolation transformer 64 is electrically connected to the second load 63.

[0057] Specifically, the input end of the second power management circuit 62 includes a positive input end and a negative output end; the input end of the second power management circuit 62 includes a positive input end and a negative output end, both of which are connected to the rectifier circuit 61 .

[0058] Specifically, the output end of the second power management circuit 62 includes a positive output end and a negative output end; the output end of the second power management circuit 62 includes a positive output end and a negative output end, both of which are connected to the power line of the instrument short section 7 through the second lead 38 of the second conductive member.

[0059] Figure 7 FIG. 5 shows a schematic diagram of the structure of the first isolation transformer 54. Figure 7 As shown, specifically, the first isolation transformer 54 has the same structure as the second isolation transformer 64. The first isolation transformer 54 includes a primary coil 541 and a secondary coil, wherein the primary coil 541 is coupled to the secondary coil, and the secondary coil includes a transmitting coil 542 and a receiving coil 543.

[0060] The working principle of the conductive and data bidirectional transmission device and system is as follows:

[0061] The electromagnetic induction generated by the first coil 27 after being energized is transmitted to the magnetic coupling cavity 32 through the magnetic coupling core shaft 26 and coupled with the electromagnetic induction generated by the second coil 33, thereby achieving reliable transmission of electric energy and data under strong vibration and large curvature of drilling.

[0062] The first cavity 2 is installed in the first protective shell 11, the second cavity 3 is installed in the second protective shell 12, and then the magnetic coupling core shaft 26 is inserted into the magnetic coupling cavity 32, the first cavity 2 is rotated, so that the connector 261 of the first cavity 2 and the connecting groove 31 of the second cavity 3 are threadedly connected, and then the first lead 21 is connected to the drilling instrument 4, and the second lead 38 is connected to the instrument short section 7. After the first lead 21 is connected to the drilling instrument 4, the electricity and data of the drilling instrument 4 will be transmitted to the first male socket 22, the first female socket 23, the first circuit module 5 and the first coil 27 in sequence, and the first lead 21 is connected to the drilling instrument 4. The electromagnetic induction generated by the first coil 27 after being energized is transmitted to the magnetic coupling cavity 32 through the coupling core shaft and coupled with the electromagnetic induction generated by the second coil 33. The coupled electricity and data are sequentially transmitted to the second circuit module 6, the second female socket 36, the first male socket 22 and the second lead 38. The second lead 38 then transmits electricity to the instrument short section 7. When the instrument short section 7 needs to transmit data to the drilling instrument 4, the first module transmits the data to the second coil 33, the second coil 33 is coupled to the first coil 27, the first coil 27 transmits the data to the first module, and the first module transmits the data to the drilling instrument 4.

[0063] The process of power transmission among the drilling instrument 4, the first circuit module 5, the second circuit module 6 and the instrument short section 7 is as follows: the power input end of the first power management circuit 51 is connected to the power line of the drilling instrument 4, the first power management circuit 51 inverts direct current into alternating current, and outputs the alternating current to the inverter circuit 52, the first load 53, the first isolation transformer 54, the first limiting filter demodulation module 55, the first modulation and amplification module 56, the first CPU and its peripheral circuit 57, the first serial interface circuit 58, and the first coil 27. After the first coil 27 is coupled with the second coil 33, the alternating current is transmitted to the rectifier circuit 61, and is output to the second power management circuit 62 after rectification. After reasonable distribution by the second power management circuit 62, the alternating current is transmitted to the second load 63, the second limiting filter demodulation module 65, the second modulation and amplification module 66, the second CPU and its peripheral circuit 67, and the second serial interface circuit 68, and the direct current is transmitted to the instrument short section 7 to complete the power supply.

[0064] The process of data transmission among the drilling instrument 4, the first circuit module 5, the second circuit module 6 and the instrument short section 7 is as follows: the first circuit module 5 and the second circuit module 6 work in half-duplex mode, that is, after the first circuit module 5, the second circuit module 6 and the instrument short section 7 are powered on with the drilling instrument 4, the first circuit module 5 works in command sending mode, and the second circuit module 6 works in command receiving mode. When the drilling instrument 4 sends command data, it is sent to the first serial interface circuit 58 via the sending end of the first serial interface circuit 58, the data is input to the first CPU and its peripheral circuit 57, and is output to the first modulation amplification module 56 after being processed by the first CPU and its peripheral circuit 57. The modulated analog signal is connected to the sending coil 54 of the first isolation transformer 54. 42 and coupled to the primary coil 541 of the first isolation transformer 54, and after being processed by the first load 53, it is output to the positive output terminal and the negative output terminal of the inverter circuit 52, and then connected to the first coil 27, electromagnetically coupled to the second coil 33, and connected to the positive input terminal and the positive input terminal of the rectifier circuit 61, and after being processed by the second load 63, it is connected to the primary coil 541 of the second isolation transformer 64, and the signal is electromagnetically coupled to the receiving coil 543 of the second isolation transformer 64, and then input to the second limiting filter demodulation module 65, and the demodulated data is input to the second CPU and its peripheral circuit 67, and the data is output to the instrument short section 7 through the output terminal of the second serial circuit, completing the data command transmission from the drilling instrument 4 to the instrument short section 7.

[0065] When data needs to be read from the instrument short section 7, the first circuit module 5 first sends a query command to the second circuit module 6. After the command is sent, the first circuit module 5 works in the command receiving mode, and the second circuit module 6 changes to work in the data sending mode after receiving the query command.

[0066] When the instrument sub 7 sends data, it is sent to the second serial interface circuit 68 via the sending end of the second circuit module 6, the data is input to the second CPU and its peripheral circuit 67 of the second circuit module 6, and is output to the second modulation and amplification module 66 after being processed by the second CPU. The modulated analog signal is connected to the sending coil 542 of the second isolation transformer 64 and coupled to the primary coil 541 of the second isolation transformer 64, and is output to the positive output end and the negative output end of the rectifier circuit 61 after being processed by the second load 63, and is coupled to the first coil 27 through the second coil 33, and then output to the first load 53 for processing via the positive output end and the negative output end of the inverter circuit 52, and is connected to the primary coil 541 of the first isolation transformer 54 after being processed by the first load 53, and the signal is electromagnetically coupled to the receiving coil 543 of the first isolation transformer 54, and then input to the first limiting filter demodulation module 55, and the demodulated data is input to the first CPU and its peripheral circuit 57, and the data is output to the drilling instrument 4 via the receiving end of the first serial interface circuit 58, thereby completing the data transmission from the instrument sub 7 to the drilling instrument 4. After the instrument short section 7 sends the data, the second circuit module 6 changes to operate in the command receiving mode. Similarly, after the first circuit module 5 receives the data, the operating mode is still changed to the command sending mode. At this point, the two-way data communication transmission is completed.

[0067] Specifically, the positive input terminal and the negative input terminal of the first power management circuit 51 and the transmitting terminal and the receiving terminal of the first serial interface circuit 58 are all first leads 21. The first leads 21 include a plurality of leads.

[0068] Specifically, the positive input terminal and the negative input terminal of the second power management circuit 62 and the transmitting terminal and the receiving terminal of the second serial interface circuit 68 are all second leads 38. The second leads 38 include a plurality of leads.

[0069] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for conducting electricity and bidirectional data transmission, comprising a housing (1), characterized in that: The shell (1) is provided with a first cavity (2) and a second cavity (3) which are threadedly connected. The first cavity (2) is provided with a first conductive member, a first circuit compartment (24), and a magnetic coupling core shaft (26) in sequence along the horizontal direction. The magnetic coupling core shaft (26) is wound with a first coil (27) at a position located in the first cavity (2). The first circuit compartment (24) is provided with a first circuit module (5). The first conductive member and the first coil (27) are both electrically connected to the first circuit module (5). The second cavity (3) is provided with a first conductive member, a first circuit compartment (24), and a magnetic coupling core shaft (26) in sequence along the horizontal direction. A cavity (32), a second circuit compartment (35), and a second conductive member, wherein a second coil (33) is wound around the magnetic coupling cavity (32), a portion of the magnetic coupling core shaft (26) is inserted into the magnetic coupling cavity (32) and forms a closed magnetic conductive loop, the first coil (27) is coupled with the second coil (33), a second circuit module (6) is arranged in the second circuit compartment (35), the second conductive member and the second coil (33) are both electrically connected to the second circuit module (6), and the first circuit module (5) is electrically connected to the second circuit module (6).

2. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: The first conductive member comprises a first male socket (22), a first female socket (23) and a first lead (21); the first lead (21) is connected to a lead terminal of the first male socket (22); the male connector of the first male socket (22) is inserted into the female connector of the first female socket (23); and the lead terminal of the first female socket (23) is electrically connected to the first circuit module (5).

3. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: A first through hole (25) is provided in the first cavity (2), and a first coil (27) is disposed in the first through hole (25).

4. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: The second conductive member comprises a second female socket (36), a second male socket (37) and a second lead (38); the second lead (38) is connected to a lead terminal of the second male socket (37); the male connector of the second male socket (37) is inserted into the female connector of the second female socket (36); and the lead terminal of the second female socket (36) is electrically connected to the second circuit module (6).

5. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: A second through hole (34) is provided in the second cavity (3), and a second coil (33) is placed in the second through hole (34).

6. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: The housing (1) comprises a first protective shell (11) and a second protective shell (12) which are detachably connected; a first cavity (2) is provided in the first protective shell (11) and a second cavity (3) is provided in the second protective shell (12).

7. The device for bidirectional transmission of electrical conduction and data according to claim 1, characterized in that: One end of the first cavity (2) located on the magnetic coupling core shaft (26) is a connector (261), and one end of the second cavity (3) located on the magnetic coupling cavity (32) is provided with a connector groove (31), and the connector (261) and the connector groove (31) are detachably connected.

8. A conductive and data bidirectional transmission system, characterized in that: The device for bidirectional conduction and data transmission as claimed in any one of claims 1 to 7 is characterized in that the first conductive member is used to conduct electricity to the first circuit module (5) and to transmit data between the first circuit module (5), the first circuit module (5) is used to transmit data between the first conductive member and the first coil (27), the first coil (27) is used to couple with the second coil (33) to transmit electric energy and to transmit analog signals between the first circuit module (5) and the second circuit module (6), the second coil (33) is used to transmit analog signals between the first coil (27) and the second circuit module (6), the second circuit module (6) is used to conduct electricity to the second conductive member and to transmit data between the second coil (33) and the second conductive member, and the second conductive member is used to transmit data with the second circuit module (6).

9. The conductive and data bidirectional transmission system according to claim 8, characterized in that: The first circuit module (5) comprises a first power management circuit (51), to which an inverter circuit (52), a first load (53), a first isolation transformer (54), a first limiting filter demodulation module (55), a first modulation and amplification module (56), a first CPU and its peripheral circuit (57) and a first serial interface circuit (58) are electrically connected in sequence, and a power input end of the first power management circuit (51) is connected to a drilling instrument (4) via a first lead (21) of a first conductive member, wherein the first limiting filter demodulation module (55) and the first modulation and amplification module (56) are respectively connected via the first isolation transformer (54). The first serial interface circuit (58) is coupled to an inverter circuit (52); a first load (53) and a first coil (27) are connected in series between the inverter circuit (52) and the first isolation transformer (54); a transmitting end and a receiving end of the first serial interface circuit (58) are connected to a drilling instrument (4) through a first lead (21) of a first conductive member; the first serial interface circuit (58) is electrically connected to a first CPU and its peripheral circuit (57); an output end of the first CPU and its peripheral circuit (57) is connected to an input end of a first modulation and amplification module (56); and an input end of the first CPU and its peripheral circuit (57) is connected to a first limiting filter demodulation module (55).

10. The conductive and data bidirectional transmission system according to claim 8, characterized in that: The second circuit module (6) comprises a second power management circuit (62), the second power management circuit (62) being electrically connected in sequence to a rectifier circuit (61), a second load (63), a second limiting filter demodulation module (65), a second modulation amplification module (66), a second CPU and its peripheral circuit (67), and a second serial interface circuit (68), the output end of the second power management circuit (62) being electrically connected to an instrument short section (7) via a second lead (38) of a second conductive member, wherein the second limiting filter demodulation module (65) and the second modulation amplification module (66) are respectively connected to the rectifier circuit (61) via a second isolation transformer (64). The second serial interface circuit (68) is coupled to the second isolation transformer (64), a second load (63) and a second coil (33) are connected in series between the rectifier circuit (61) and the second isolation transformer (64), a transmitting end and a receiving end of the second serial interface circuit (68) are connected to the instrument short section (7) through a second lead (38) of a second conductive member, the second serial interface circuit (68) is electrically connected to a second CPU and its peripheral circuit (67), an output end of the second CPU and its peripheral circuit (67) is connected to an input end of a second modulation and amplification module (66), and an input end of the second CPU and its peripheral circuit (67) is connected to a second limiting filter demodulation module (65).

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