Rotary anti-offset wireless electric energy and signal simultaneous transmission coupling mechanism and system

Abstract

The invention provides a rotary anti-offset wireless electric energy and signal simultaneous transmission coupling mechanism and system, and is used for solving the problems of low efficiency and poor safety of a touch slip ring of an existing rotary controllable system during long-time operation. Comprising an inner cylinder, an outer cylinder, a signal coupling assembly and an energy coupling assembly, the inner cylinder and the outer cylinder are coaxially sleeved, and the signal coupling assembly comprises a 1 / 2 cylindrical signal receiving coil and two 1 / 4 cylindrical signal transmitting coils which are connected in series; the energy coupling assembly comprises a 1 / 2 cylindrical energy transmitting coil and two 1 / 4 cylindrical energy receiving coils which are connected in series, the 1 / 2 cylindrical signal receiving coil and the 1 / 2 cylindrical energy transmitting coil are attached to the inner wall of the outer barrel, and the two 1 / 4 cylindrical signal transmitting coils and the two 1 / 4 cylindrical energy receiving coils are attached to the outer wall of the inner barrel. Direct physical contact between slip rings of an existing rotary controllable system is eliminated, so that the power problem caused by abrasion is solved, the service life of the system is prolonged, and reliability and safety are improved.

Description

Technical Field

[0001] The invention relates to the field of wireless power transmission, in particular to a rotational anti-deviating wireless power and signal simultaneous transmission coupling mechanism and system. Background Art

[0002] Rotary controllable systems are used as basic tools in the drilling industry for horizontal wells and extended reach wells. Such systems can continuously adjust the drilling direction without stopping the rig, which significantly improves drilling efficiency and the ability to adapt to complex geological structures. Unlike traditional directional drilling technology, the rotary controllable system allows the drill bit to penetrate high-quality reservoir sections along a predetermined trajectory, which greatly reduces non-productive time and greatly speeds up drilling, thereby increasing oil and gas recovery and oil well production. The realization of a rotary controllable system requires improving the stability of power transmission and real-time data transmission. Therefore, it is particularly important to maintain a reliable and stable power supply and real-time data communication under the harsh conditions of deep-sea drilling. At present, there are two ways to power the electrical equipment of the rotary controllable system. One method is to use batteries to power it. However, battery drive has many limitations, including limited life and complex replacement. Another method is through a contact slip ring, which transmits power through rolling contact between the stator side and the rotor side. However, the wear of the contact slip ring after long-term work often leads to inefficiency and safety issues. Summary of the invention

[0003] The purpose of the present invention is to provide a rotation-resistant deviation wireless power and signal simultaneous transmission coupling mechanism and system, which is used to solve the problem of low efficiency and poor safety of the contact slip ring of the existing rotation controllable system when it runs for a long time.

[0004] A rotational anti-deviated wireless energy and signal simultaneous transmission coupling mechanism, comprising a coaxially sleeved inner cylinder and outer cylinder, and a signal coupling component and an energy coupling component, wherein the signal coupling component comprises a 1 / 2 cylindrical signal receiving coil and two 1 / 4 cylindrical signal transmitting coils;

[0005] The energy coupling component includes a 1 / 2 cylindrical energy transmitting coil and two 1 / 4 cylindrical energy receiving coils. The 1 / 2 cylindrical signal receiving coil and the 1 / 2 cylindrical energy transmitting coil are both attached to the inner wall of the outer cylinder, and the two 1 / 4 cylindrical signal transmitting coils and the two 1 / 4 cylindrical energy receiving coils are both attached to the outer wall of the inner cylinder.

[0006] Optionally, the 1 / 2 cylindrical signal receiving coil and the 1 / 2 cylindrical energy transmitting coil are arranged to be rotated 180° along the axis of the outer cylinder;

[0007] The two 1 / 4 cylindrical signal transmitting coils and the two 1 / 4 cylindrical energy receiving coils are alternately arranged along the axis of the inner cylinder and rotated 90 degrees in sequence.

[0008] Optionally, the 1 / 2 cylindrical signal receiving coil and the two 1 / 4 cylindrical signal transmitting coils are all DD type coils.

[0009] Optionally, the 1 / 2 cylindrical energy transmitting coil and the two 1 / 4 cylindrical energy receiving coils are all Q-type coils.

[0010] Optionally, the outer cylinder is a fixed sleeve, the inner cylinder is a rotating sleeve, and the inner cylinder rotates around its axis.

[0011] Optionally, the 1 / 2 cylindrical signal receiving coil and the two 1 / 4 cylindrical signal transmitting coils are both single-layer N-turn coils;

[0012] The 1 / 2 cylindrical energy transmitting coil and the two 1 / 4 cylindrical energy receiving coils are both M-layer N-turn coils, where M and N are both positive integers greater than or equal to 2.

[0013] A rotation-resistant deviation-free wireless energy and signal simultaneous transmission system comprises the above-mentioned rotation-resistant deviation-free wireless energy and signal simultaneous transmission coupling mechanism.

[0014] Optionally, it further includes a primary signal transmission circuit arranged on the inner tube, and a secondary signal transmission circuit arranged on the outer tube;

[0015] The input end of the primary signal transmission circuit is connected to a signal collector, the output end of the primary signal transmission circuit is connected to two 1 / 4 cylindrical signal transmitting coils connected in series, the input end of the secondary signal transmission circuit is connected to a 1 / 2 cylindrical signal receiving coil, and the output end of the secondary signal transmission circuit is connected to a signal receiver.

[0016] Optionally, it further includes a primary energy transmission circuit arranged on the outer cylinder, and a secondary energy transmission circuit arranged on the inner cylinder;

[0017] The input end of the primary energy transmission circuit is connected to a DC power supply, the output end of the primary energy transmission circuit is connected to a 1 / 2 cylindrical energy transmitting coil, the input end of the secondary energy transmission circuit is connected to two 1 / 4 cylindrical energy receiving coils connected in series, and the output end of the secondary energy transmission circuit is connected to a load.

[0018] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0019] 1. The present application realizes contactless signal transmission through a signal coupling component and contactless power transmission through an energy coupling component, thereby eliminating direct physical contact between slip rings, thereby solving power problems caused by wear and tear and improving system life, reliability and safety.

[0020] 2. The present application can solve the 360° rotational offset problem existing in the rotationally controllable system by rotating a 1 / 2 cylindrical signal receiving coil 1 and a 1 / 2 cylindrical energy transmitting coil 3 by 180° rotation and two 1 / 4 cylindrical signal transmitting coils 2 and two 1 / 4 cylindrical energy receiving coils 4 by 90° rotation, thereby achieving stable mutual inductance of energy and signal under rotational offset, and no mutual influence between energy and signal.

[0021] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings of the present invention are as follows.

[0023] Figure 1 It is a structural schematic diagram of the coupling mechanism of the present invention.

[0024] Figure 2 It is a front view of the coupling mechanism of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the stator side of the coupling mechanism of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the rotor side of the coupling mechanism of the present invention.

[0027] Figure 5 This is a curve diagram of the mutual inductance of the signal coil according to the present invention versus the rotation angle offset.

[0028] Figure 6 This is a curve diagram of the mutual inductance of the energy coil of the present invention versus the rotation angle offset.

[0029] Figure 7 This is a curve diagram of the cross-coupling mutual inductance between the energy coil and the signal coil versus the rotation angle offset of the present invention.

[0030] In the figure: 1-1 / 2 cylindrical signal receiving coil; 2-1 / 4 cylindrical signal transmitting coil; 3-1 / 2 cylindrical energy transmitting coil; 4-1 / 4 cylindrical energy receiving coil. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1:

[0033] like Figure 1 , Figure 2 and Figure 3 A rotational anti-deviated wireless energy and signal simultaneous transmission coupling mechanism shown includes a coaxially sleeved inner cylinder and outer cylinder, a signal coupling component and an energy coupling component, wherein the signal coupling component includes a 1 / 2 cylindrical signal receiving coil 1 and two 1 / 4 cylindrical signal transmitting coils 2;

[0034] The energy coupling component includes a 1 / 2 cylindrical energy transmitting coil 3 and two 1 / 4 cylindrical energy receiving coils 4. The 1 / 2 cylindrical signal receiving coil 1 and the 1 / 2 cylindrical energy transmitting coil 3 are both attached to the inner wall of the outer cylinder, and the two 1 / 4 cylindrical signal transmitting coils 2 and the two 1 / 4 cylindrical energy receiving coils 4 are both attached to the outer wall of the inner cylinder.

[0035] In this embodiment, in order to solve the problems of low efficiency and poor safety of traditional contact slip rings when running for a long time, the present application sets a coupling mechanism for simultaneous transmission of energy and signal, realizes contactless signal transmission through a signal coupling component, realizes contactless power transmission through an energy coupling component, eliminates direct physical contact between slip rings, thereby solving the power problem caused by wear and tear, and improving the system life, reliability and safety.

[0036] In this embodiment, the outer cylinder is the outer sleeve of the rotationally controllable system, which is a fixed sleeve; the inner cylinder is the drill bit of the rotationally controllable system, which is a rotating sleeve, and the drill bit rotates around the axis of the outer sleeve.

[0037] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the 1 / 2 cylindrical signal receiving coil 1 and the 1 / 2 cylindrical energy transmitting coil 3 are arranged to rotate 180° along the axis of the outer cylinder;

[0038] The two 1 / 4 cylindrical signal transmitting coils 2 and the two 1 / 4 cylindrical energy receiving coils 4 are alternately arranged along the axis of the inner cylinder and rotated 90 degrees in sequence.

[0039] In this embodiment, the anti-deviation performance of the coupling mechanism of the rotation controllable system during the rotation process is improved by rotating the 1 / 2 cylindrical signal receiving coil 1 and the 1 / 2 cylindrical energy transmitting coil 3 by 180° and rotating the two 1 / 4 cylindrical signal transmitting coils 2 and the two 1 / 4 cylindrical energy receiving coils 4 by 90°.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the 1 / 2 cylindrical signal receiving coil 1 and the two 1 / 4 cylindrical signal transmitting coils 2 are all DD type coils; Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the 1 / 2 cylindrical energy transmitting coil 3 and the two 1 / 4 cylindrical energy receiving coils 4 are all Q-type coils.

[0041] As an embodiment of the present application, the 1 / 2 cylindrical signal receiving coil 1 and the two 1 / 4 cylindrical signal transmitting coils 2 are both single-layer N-turn coils;

[0042] The 1 / 2 cylindrical energy transmitting coil 3 and the two 1 / 4 cylindrical energy receiving coils 4 are both M-layer N-turn coils, where M and N are both positive integers greater than or equal to 2.

[0043] In this embodiment, the Q-type coils are all 3-layer 3-turn coils wound with 2 mm wire, and the DD-type coils are all single-layer 3-turn coils wound with 1 mm wire. The Q coils and DD coils can generate orthogonal magnetic fields, so the coupling coefficient between the two is very low.

[0044] In this embodiment, the coupling mechanism minimizes the interference between energy transmission and data transmission, and can provide a constant voltage and stable data transmission to the load end when dealing with rotational offset or load changes. In addition, due to the high degree of decoupling between energy and signal, the energy coil and the signal coil can be placed relatively closely, thereby better realizing the compactness and efficiency of the rotation controllable system.

[0045] The in and out simulation verification of the above coupling mechanism:

[0046] Its parameters are as follows Figure 1 and Figure 2 Wherein d1 is the diameter of the inner cylinder, d2 is the diameter of the outer cylinder, d3 is the sum of the thickness of the inner cylinder and the 1 / 4 cylindrical energy receiving coil 4, d4 is the thickness of the 1 / 2 cylindrical signal receiving coil 1 and the 1 / 4 cylindrical signal transmitting coil 2, d5 is the thickness of the 1 / 2 cylindrical energy transmitting coil 3 and the 1 / 4 cylindrical energy receiving coil 4, and l1 is the width of the coil. In this embodiment, the 1 / 2 cylindrical signal receiving coil 1 and the 1 / 2 cylindrical energy transmitting coil 3 and the outer cylinder constitute the stator side, which remains stationary, and the 1 / 2 cylindrical signal receiving coil 1 is defined as coil L DS , 1 / 2 cylindrical energy transmitting coil 3 is coil L PTwo 1 / 4 cylindrical signal transmitting coils 2 connected in series and two 1 / 4 cylindrical energy receiving coils 4 connected in series together with the inner cylinder constitute the rotor side, which rotates together with the rotating controllable part within 360°. The two 1 / 4 cylindrical signal transmitting coils 2 are defined as coils L DP1 and coil L DP2 , the two 1 / 4 cylindrical energy receiving coils 4 are coils L S1 and coil L S2 .

[0047] The simulation results are as follows Figure 5 , Figure 6 and Figure 7 As shown, Figure 5 As shown, M DD1 Indicates coil L DP1 and coil L DS The mutual inductance between DD2 Indicates coil L DP2 and coil L DS From the figure, we can see that within the rotation range of 0 to 90° (180° to 270°), M DD1 It shows an upward (downward) trend, while M DD2 The series coil L DP1 and coil L DP2 The signal transmitting coil L DP (i.e. L DP =L DP1 +L DP2 ), their total mutual inductance M DD (i.e. M DD =M DD1 +M DD2 ) should remain relatively stable. Figure 5 Zhongzhi, M DD The simulation results are 5.86 to 6.05 μH. Compared with the average value of 5.94 μH, its fluctuation is within ±1.85%, which means that the structure can stably transmit data.

[0048] like Figure 6 As shown, in terms of energy transmission, M PP1 Indicates coil L S1 and coil L P The mutual inductance between PP2 Indicates coil L S2 and coil L P The mutual inductance. Figure 6 In the rotation range from 90° to 180° (270° to 360°) shown, M PP1 shows an upward (downward) trend, while M PP2 Similarly, the series coil LS1 and coil L S2 The energy receiving coil L S (i.e. L S =L S1 +L S2 ). Coil L S and coil L P The total mutual inductance between PP (i.e. M PP =M PP1 +M PP2 ). From the simulation results, we can see that M PP Can remain relatively stable. PP It ranges from 18.55 to 19.48 μH, and its fluctuation range is within about ±2.42% compared to the average value of 19.02 μH.

[0049] like Figure 7 As shown, M LDP-LP 、M LDP-LS 、M LDS-LP and M LDS-LP Coil L DP 、Coil L DS 、Coil L P and coil L S Unwanted cross-coupling mutual inductance between the coils. Due to the decoupling characteristics between the DD coil and the Q coil, all these measurements always remain below 0.2μH. It can therefore be shown that the interference between energy transfer and data transfer is small enough to be ignored.

[0050] In summary, the coupling mechanism proposed in this paper can solve the 360° rotation offset problem existing in the rotation controllable system, achieve stable mutual inductance of energy and signal under rotation offset, and the energy and signal do not affect each other.

[0051] Embodiment 2:

[0052] A rotation-resistant wireless energy and signal simultaneous transmission system includes the rotation-resistant energy and signal simultaneous transmission coupling mechanism according to embodiment 1. It also includes a primary signal transmission circuit arranged on the inner cylinder, and a secondary signal transmission circuit arranged on the outer cylinder;

[0053] The input end of the primary signal transmission circuit is connected to the signal collector, the output end of the primary signal transmission circuit is connected to two 1 / 4 cylindrical signal transmitting coils 2 connected in series, the input end of the secondary signal transmission circuit is connected to the 1 / 2 cylindrical signal receiving coil 1, and the output end of the secondary signal transmission circuit is connected to the signal receiver.

[0054] It also includes a primary energy transmission circuit arranged on the outer cylinder, and a secondary energy transmission circuit arranged on the inner cylinder;

[0055] The input end of the primary energy transmission circuit is connected to a DC power supply, the output end of the primary energy transmission circuit is connected to a 1 / 2 cylindrical energy transmitting coil 3, the input end of the secondary energy transmission circuit is connected to two 1 / 4 cylindrical energy receiving coils 4 connected in series, and the output end of the secondary energy transmission circuit is connected to a load.

[0056] In this embodiment, the primary signal transmission circuit is a signal modulation circuit, and the secondary signal transmission circuit is a signal demodulation circuit. During signal transmission, the signal collector collects real-time data (including temperature, pressure and other data) on the rotor side of the rotating controllable system. The real-time data is modulated by the modulation circuit and transmitted to two 1 / 4 cylindrical signal transmitting coils 2 connected in series. The 1 / 4 cylindrical signal transmitting coil 2 is coupled with the 1 / 2 cylindrical signal receiving coil 1 to transmit the signal to the stator side, and then demodulated by the signal demodulation circuit and transmitted to the signal receiver. The transmission of the rotating controllable system signal is realized.

[0057] In this embodiment, the primary energy transmission circuit includes an inverter and a primary compensation circuit connected in sequence, and the secondary energy transmission circuit includes a secondary compensation circuit and a rectifier filter connected in sequence. The primary compensation circuit and the secondary compensation circuit can be symmetrically arranged LC or LCC topology structures. During power transmission, the DC power supply is inverted by the inverter and then transmitted to the primary compensation circuit. The power is transmitted to the 1 / 2 cylindrical energy transmitting coil 3 through the primary compensation circuit. The 1 / 2 cylindrical energy transmitting coil 3 is coupled with two 1 / 4 cylindrical energy receiving coils 4 connected in series. The power coupled by the 1 / 4 cylindrical energy receiving coil 4 is then transmitted to the secondary compensation circuit and the rectifier filter in sequence and transmitted to the load of the rotating controllable system. The transmission of power of the rotating controllable system is realized.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A rotational anti-deviated wireless power and signal transmission coupling mechanism, comprising a coaxially sleeved inner cylinder and outer cylinder, a signal coupling component and an energy coupling component, characterized in that: The signal coupling component comprises a 1 / 2 cylindrical signal receiving coil (1) and two 1 / 4 cylindrical signal transmitting coils (2) connected in series; The energy coupling component comprises a 1 / 2 cylindrical energy transmitting coil (3) and two 1 / 4 cylindrical energy receiving coils (4) connected in series, the 1 / 2 cylindrical signal receiving coil (1) and the 1 / 2 cylindrical energy transmitting coil (3) are both attached to the inner wall of the outer cylinder, and the two 1 / 4 cylindrical signal transmitting coils (2) and the two 1 / 4 cylindrical energy receiving coils (4) are both attached to the outer wall of the inner cylinder.

2. A rotationally anti-deviated wireless power and signal simultaneous transmission coupling mechanism according to claim 1, characterized in that: The 1 / 2 cylindrical signal receiving coil (1) and the 1 / 2 cylindrical energy transmitting coil (3) are arranged to be rotated 180° along the axis of the outer cylinder; The two 1 / 4 cylindrical signal transmitting coils (2) and the two 1 / 4 cylindrical energy receiving coils (4) are alternately arranged and rotated 90 degrees in sequence along the axis of the inner cylinder.

3. The rotation-resistant wireless power and signal simultaneous transmission coupling mechanism according to claim 1, characterized in that: The 1 / 2 cylindrical signal receiving coil (1) and the two 1 / 4 cylindrical signal transmitting coils (2) are all DD type coils.

4. The rotation-resistant wireless power and signal simultaneous transmission coupling mechanism according to claim 3 is characterized in that: The 1 / 2 cylindrical energy transmitting coil (3) and the two 1 / 4 cylindrical energy receiving coils (4) are all Q-type coils.

5. The rotation-resistant wireless power and signal simultaneous transmission coupling mechanism according to claim 1, characterized in that: The outer cylinder is a fixed sleeve, the inner cylinder is a rotating sleeve, and the inner cylinder rotates around its axis.

6. The rotation-resistant wireless power and signal simultaneous transmission coupling mechanism according to claim 4, characterized in that: The 1 / 2 cylindrical signal receiving coil (1) and the two 1 / 4 cylindrical signal transmitting coils (2) are both single-layer N-turn coils; The 1 / 2 cylindrical energy transmitting coil (3) and the two 1 / 4 cylindrical energy receiving coils (4) are both M-layer N-turn coils, wherein M and N are both positive integers greater than or equal to 2.

7. A rotation-resistant wireless energy and signal simultaneous transmission system, characterized in that: The invention comprises the rotational anti-deviation energy and signal simultaneous transmission coupling mechanism as described in any one of claims 1 to 6.

8. The rotation-resistant wireless energy and signal simultaneous transmission system according to claim 7, characterized in that: It also includes a primary signal transmission circuit arranged on the inner cylinder, and a secondary signal transmission circuit arranged on the outer cylinder; The input end of the primary signal transmission circuit is connected to a signal collector, the output end of the primary signal transmission circuit is connected to two 1 / 4 cylindrical signal transmitting coils (2) connected in series, the input end of the secondary signal transmission circuit is connected to a 1 / 2 cylindrical signal receiving coil (1), and the output end of the secondary signal transmission circuit is connected to a signal receiver.

9. The rotation-resistant wireless energy and signal simultaneous transmission system according to claim 7, characterized in that: It also includes a primary energy transmission circuit arranged on the outer cylinder, and a secondary energy transmission circuit arranged on the inner cylinder; The input end of the primary energy transmission circuit is connected to a DC power supply, the output end of the primary energy transmission circuit is connected to a 1 / 2 cylindrical energy transmitting coil (3), the input end of the secondary energy transmission circuit is connected to two 1 / 4 cylindrical energy receiving coils (4) connected in series, and the output end of the secondary energy transmission circuit is connected to a load.

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