Motor power supply wire passing device of underground core sampling instrument
By using a helical spring wire and a wire guide device in the downhole core sampler, the problems of motor wire entanglement and damage were solved, ensuring the stability and service life of the sampler.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-15
- Publication Date
- 2026-04-10
AI Technical Summary
In existing downhole core sampling instruments, the excessively long motor wires can easily interfere with the movement, posing a risk of entanglement and damage, and affecting service life.
Using helical spring wires and wire guide devices, the motor wires are arranged in a reasonable manner through guide holes and wire guide tubes. The helical spring wires can elastically expand and contract with the trajectory of the core-reaming movement, avoiding tangling and damage.
This ensures smooth motor operation, reduces the risk of wire tangling and damage, and guarantees the stability and lifespan of the sampler.
Smart Images
Figure CN121840239A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of logging instruments, and particularly relates to a motor power supply wire passing device of a downhole core sampling instrument. BACKGROUND
[0002] At present, good development has been achieved in pressure sampling and coring technologies at home and abroad. The isotope coring and sampling technology adopts an electric direct drive structure. In order to ensure that the coring motor can work normally, a long enough plug-in wire needs to be reserved inside the sampling instrument.
[0003] However, during the movement of the motor with the sampling mechanism, the excessively long plug-in wire not only interferes with the normal movement of the motor, but also has the risk of winding. At the same time, after the sampling instrument is used for a long time, due to the repeated bending of the two ends of the plug-in wire, the plug-in wire has the risk of being damaged, thereby affecting the service life of the sampling instrument. SUMMARY
[0004] In order to solve all or part of the above problems, the purpose of the present application is to provide a motor power supply wire passing device of a downhole core sampling instrument, which realizes reasonable wire passing arrangement of the motor, thereby reducing the risk of wire winding or damage.
[0005] The present application provides a motor power supply wire passing device of a downhole core sampling instrument, comprising: a support base for being fixed on a sampling instrument body; a guide hole provided on the support base; a wire passing pipe slidingly connected in the guide hole; a connecting seat provided at an end of the wire passing pipe and used for being connected with a sampling mechanism of the sampling instrument; a first wire plug provided on the support base and used for being connected with a power supply short section of the sampling instrument; a second wire plug provided on the connecting seat and used for being connected with a motor wire of the sampling instrument; a wire passing hole provided on the support base and in communication with the guide hole; a spiral spring wire provided in the guide hole, one end of the spiral spring wire passing through the wire passing hole and being connected with the first wire plug, the other end of the spiral spring wire passing through the wire passing pipe and being connected with the second wire plug, and the spiral spring wire being capable of elastically stretching and contracting with the wire passing pipe.
[0006] Optionally, one end of the support base is detachably connected with a sealing plug for plugging the wire passing hole, the other end is detachably connected with a sealing plug for plugging the guide hole, the wire passing tube passes through the sealing plug and is in sealing sliding fit with the sealing plug, and the guide hole and the wire passing hole are filled with hydraulic oil to balance the internal and external pressure difference of the support base.
[0007] Optionally, a limiting seat is detachably connected in the guide hole, and one end of the helical spring wire away from the wire passing tube is connected with the limiting seat.
[0008] Optionally, a limiting screw is threadedly connected on the support base, a limiting hole is arranged on the limiting seat, and the shank of the limiting screw passes through the limiting hole to fix the limiting seat.
[0009] Optionally, a limiting ring is arranged on one end of the wire passing tube away from the connecting seat, and the second limiting seat is used to block the limiting ring from sliding out of the guide hole.
[0010] Optionally, a mud scraping ring is arranged on the inner wall of the sealing plug along the circumference thereof, and the mud scraping ring is in close abutting fit with the wire passing tube to scrape off the mud on the wire passing tube.
[0011] Optionally, the connecting seat comprises: a support seat in L-shaped structure and connected with the wire passing tube; a support plate connected on the support seat and forming a U-shaped structure with the support seat; a connecting head connected on one side with the support seat and on the other side with the support plate; a mounting hole arranged on the support seat, and the second wire plug is detachably connected in the mounting hole; a wire passing hole arranged on the support seat and the connecting head, the wire passing hole is in communication with the mounting hole, and the motor wire of the sampling instrument passes through the wire passing hole and is connected with the second wire plug.
[0012] Optionally, a locking ring is arranged on one end of the wire passing tube close to the support seat, a locking nut is movably sleeved on the wire passing tube, the locking nut is threadedly connected with the support seat and tightly fixes the locking ring on the support seat.
[0013] Optionally, a rotating tube is arranged on the support seat, a rotating column is arranged on the support plate, the connecting head is in rotating fit with the rotating tube and the rotating column respectively, and the motor wire passes through the rotating tube.
[0014] Optionally, two guide columns are symmetrically arranged on the connecting seat, and the guide columns are used for sliding fit with guide grooves on a sampling mechanism of the sampling instrument, so as to limit rotation of the connecting seat and the wire passing pipe relative to the support base.
[0015] From the above technical solution, the motor power supply wire passing device of the downhole core sampling instrument has the following advantages: The motor power supply wire passing device can realize reasonable wire passing arrangement of the motor, the spiral wire can perform extension and contraction movement along the coring movement track, can ensure smooth movement of the motor, can ensure smooth sampling operation of the sampling instrument, and can reduce the risk of wire winding or damage, so as to ensure the service life and use stability of the sampling instrument.
[0016] Other features and advantages of the present application will be described in the subsequent description. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used to explain the technical solutions of the present application together with embodiments of the present application, and do not constitute a limitation on the technical solutions of the present application.
[0018] Figure 1 It is a schematic view of the overall structure of the embodiment of the present application; Figure 2 It is a sectional view of the embodiment of the present application; Figure 3 It is Figure 2 It is an enlarged schematic view of the A area in the middle; Figure 4 It is Figure 2 It is an enlarged schematic view of the B area in the middle; Figure 5 It is a schematic view of the structure of the connecting seat in the embodiment of the present application; Figure 6 It is Figure 2 It is an enlarged schematic view of the C area in the middle; Figure 7 It is a sectional view of the connecting seat in the embodiment of the present application.
[0019] Explanation of reference signs: 1, support base; 2, guide hole; 3, wire passing pipe; 4, connecting seat; 41, support seat; 42, support plate; 43, connecting head; 44, mounting hole; 45, wire hole; 46, rotating pipe; 47, rotating column; 5, first wire connector; 6, second wire connector; 7, wire passing hole; 8, spiral spring wire; 9, guide column; 10, sealing plug; 11, sealing plug; 12, limiting seat; 14, limiting screw; 15, limiting hole; 16, limiting ring; 17, mud scraping ring; 18, locking ring; 19, locking nut. DETAILED DESCRIPTION
[0020] In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in any manner without conflict.
[0021] As shown in Figures 1-7 , the present application discloses a motor power supply wire passing device of a downhole core sampling instrument, which comprises a support base body 1, and the support base body 1 is fixed on the body of the sampling instrument by screws. A guide hole 2 is arranged on the support base body 1, and a wire passing pipe 3 is slidably connected in the guide hole 2. An end of the wire passing pipe 3 is provided with a connecting seat 4, and the connecting seat 4 is used to connect with the sampling mechanism of the sampling instrument.
[0022] In one embodiment, as shown in Figure 1 , Figure 2 , a first wire plug 5 is arranged on the support base body 1, and the first wire plug 5 is used to connect with the power supply short section of the sampling instrument. A second wire plug 6 is arranged on the connecting seat 4, and the second wire plug 6 is used to connect with the motor wire of the sampling instrument.
[0023] In one embodiment, as shown in Figure 1 , Figure 2 , a wire passing hole 7 is arranged on the support base body 1 and communicates with the guide hole 2. A spiral spring wire 8 is arranged in the guide hole 2. One end of the spiral spring wire 8 passes through the wire passing hole 7 and is connected with the first wire plug 5, and the other end passes through the wire passing pipe 3 and is connected with the second wire plug 6. The spiral spring wire 8 can elastically stretch and contract along with the sliding of the wire passing pipe 3.
[0024] In the present embodiment, the two ends of the spiral spring wire 8 are straight wires, that is, the spiral part of the spiral spring wire 8 is located in the guide hole 2. One side of the straight wire passes through the wire passing hole 7 and is connected with the first wire plug 5, and the other side of the straight wire passes through the wire passing pipe 3 and is connected with the second wire plug 6.
[0025] The motor power supply wire passing device in the present embodiment can realize reasonable wire arrangement of the motor wire. The spiral spring wire 8 saves more space, and can elastically stretch and contract along with the core movement track. It can not only ensure smooth movement of the motor to ensure smooth sampling operation of the sampling instrument, but also reduce the risk of wire winding or bending damage to ensure the service life and stability of the sampling instrument.
[0026] In one embodiment, as shown in Figure 1As shown, two guide columns 9 are symmetrically arranged on the connecting seat 4, and the guide columns 9 are used to slide with the guide groove on the sampling mechanism of the sampling instrument, so as to limit the rotation of the connecting seat 4 and the overline tube 3 relative to the support base 1, that is, the overline tube 3 can only perform the extension and contraction movement and cannot rotate, so as to prevent the torsion of the spiral spring wire 8.
[0027] In one embodiment, as shown in Figure 1 、 Figure 2 , one end of the support base 1 is threadedly connected with a sealing plug 10 for plugging the overline hole 7, and the other end is detachably connected with a sealing plug 11 for plugging the guide hole 2 through a screw. At the same time, the overline tube 3 passes through the sealing plug 11 and is in sealing sliding cooperation with the sealing plug 11, and the guide hole 2 and the overline hole 7 are filled with hydraulic oil, so as to balance the internal and external pressure difference of the support base 1, that is, the hydraulic oil and the external mud pressure difference are consistent, so as to ensure that the overline tube 3 can smoothly extend and contract, and also can realize the protection of the spiral spring wire 8.
[0028] In one embodiment, as shown in Figure 2 、 Figure 3 , a limiting seat 12 is detachably connected in the guide hole 2, the limiting seat 12 is close to the sealing plug 10, and the spiral part of the spiral spring wire 8 is connected with the limiting seat 12, so as to realize the limiting of the spiral spring wire 8, and ensure that the spiral part of the spiral spring wire 8 can smoothly elastically extend and contract.
[0029] In one embodiment, as shown in Figure 2 、 Figure 3 , a limiting screw 14 is threadedly connected on the support base 1, a limiting hole 15 is arranged on the limiting seat 12, and the shank of the limiting screw 14 passes through the limiting hole 15, so as to realize the fixation of the limiting seat 12, so that the limiting seat 12 can be quickly disassembled.
[0030] In one embodiment, as shown in Figure 2 、 Figure 4 , a limiting ring 16 is arranged on the end of the overline tube 3 away from the connecting seat 4, and the sealing plug 11 is used to block the limiting ring 16 from sliding out of the guide hole 2, so as to limit the maximum extension stroke of the overline tube 3. At the same time, the inner wall of the sealing plug 11 is provided with a mud scraping ring 17 along the circumference thereof, and the mud scraping ring 17 is in close abutment with the overline tube 3, so as to scrape off the mud on the overline tube 3.
[0031] In one embodiment, as shown in Figure 5 、 Figure 6 、 Figure 7 , the connecting seat 4 comprises a support seat 41, a support plate 42 and a connecting head 43, the support seat 41 is in L-shaped structure, the support plate 42 is detachably connected on the support seat 41 through a screw, the support seat 41 and the support plate 42 form a U-shaped structure, and one side of the connecting head 43 is connected with the support seat 41 and the other side is connected with the support plate 42.
[0032] In one embodiment, as shown in Figure 5 , Figure 6 , Figure 7 The support base 41 is provided with a mounting hole 44, and the second wiring plug 6 is detachably connected to the mounting hole 44 by a screw, and the end of the wire passing pipe 3 is inserted into the mounting hole 44 and is detachably connected with the support base 41. The support base 41 and the connecting head 43 are provided with a wire passing hole 45, which is in communication with the mounting hole 44, and the motor wire of the sampling instrument passes through the wire passing hole 45 and is connected with the second wiring plug 6.
[0033] In one embodiment, as shown in Figure 5 , Figure 6 The wire passing pipe 3 is integrally provided with a locking ring 18 at one end close to the support base 41, and a locking nut 19 is movably sleeved on the wire passing pipe 3, which is threadedly connected with the support base 41 and tightly fixes the locking ring 18 on the support base 41, so as to realize the connection between the wire passing pipe 3 and the support base 41.
[0034] In one embodiment, as shown in Figure 5 , Figure 7 The support base 41 is provided with a rotating pipe 46, and the support plate 42 is provided with a rotating column 47, and the connecting head 43 is rotatably connected with the rotating pipe 46 and the rotating column 47, and the motor wire passes through the rotating pipe 46, so that the connecting head 43 can swing with the sampling mechanism to adapt to the movement of the sampling mechanism.
[0035] In this embodiment, the wire passing holes 45 on the support base 41 and the connecting head 43 are respectively in L shape, one end of the rotating pipe 46 is in communication with the wire passing hole 45 on the support base 41, and the other end is inserted into the wire passing hole 45 on the connecting head 43, so as to ensure that the motor wire can be smoothly arranged.
[0036] In one embodiment, as shown in Figure 1 , Figure 2 The limiting seat 12 and the support base 1, the sealing plug 11 and the support base 1, the wire passing pipe 3 and the support base 41, and the connecting head 43 and the rotating pipe 46 are respectively sealed by a sealing ring. Of course, sealing rings or other sealing components can be additionally provided between the remaining two adjacent components to ensure the sealing effect of the device.
[0037] From the above, it can be seen that the motor power supply wire arrangement device can realize reasonable wire arrangement of the motor, the spiral spring wire 8 is more space-saving, and the spiral spring wire 8 can be elastically stretched and deformed along the coring trajectory, which can not only ensure smooth movement of the motor, but also reduce the risk of wire winding or bending damage. At the same time, the components of the motor power supply wire arrangement device are connected in a detachable manner, which facilitates the maintenance and maintenance operation of the staff, and also reduces the maintenance cost.
[0038] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the present application should be the usual meanings understood by the skilled person in the field to which the present application belongs.
[0039] In addition, the terms "first", "second", etc. are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.
[0040] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
Claims
1. A power supply cable device for a downhole core sampler, characterized in that, include: Supporting substrate (1) is used to fix it on the sampler body; A guide hole (2) is provided on the support base (1); The conduit (3) is slidably connected to the guide hole (2); A connecting seat (4) is provided at the end of the through-tube (3) and is used to connect with the sampling mechanism of the sampler; The first connector (5) is mounted on the support base (1) and is used to connect to the power supply section of the sampler. The second wiring plug (6) is disposed on the connector (4) and is used to connect to the motor wire of the sampler; A wire-passing hole (7) is provided on the support base (1) and communicates with the guide hole (2); A helical spring wire (8) is disposed in the guide hole (2). One end of the helical spring wire (8) passes through the wire hole (7) and is connected to the first connector (5), and the other end passes through the wire tube (3) and is connected to the second connector (6). The helical spring wire (8) can undergo elastic expansion and contraction deformation as the wire tube (3) slides.
2. The motor power supply line guide device according to claim 1, characterized in that, One end of the support base (1) is detachably connected to a sealing plug (10) for sealing the wire hole (7), and the other end is detachably connected to a sealing plug (11) for sealing the guide hole (2). The wire tube (3) passes through the sealing plug (11) and is in a sealing sliding fit with the sealing plug (11). The guide hole (2) and the wire hole (7) are filled with hydraulic oil to balance the internal and external pressure difference of the support base (1).
3. The motor power supply line guide device according to claim 2, characterized in that, A limiting seat (12) is detachably connected inside the guide hole (2), and one end of the helical spring wire (8) away from the wire tube (3) is connected to the limiting seat (12).
4. The motor power supply line guide device according to claim 3, characterized in that, A limiting screw (14) is threaded onto the support base (1), and a limiting hole (15) is provided on the limiting seat (12). The screw of the limiting screw (14) passes through the limiting hole (15) to fix the limiting seat (12).
5. The motor power supply line guide device according to claim 2, characterized in that, A limiting ring (16) is provided at one end of the conduit (3) away from the connecting seat (4), and the sealing plug (11) is used to prevent the limiting ring (16) from sliding out of the guide hole (2).
6. The motor power supply line guide device according to claim 3, characterized in that, The inner wall of the sealing plug (11) is provided with a mud scraper ring (17) along its circumference, and the mud scraper ring (17) is in close contact with the cable pipe (3) to scrape off the mud on the cable pipe (3).
7. The motor power supply line guide device according to claim 1, characterized in that, The connector (4) includes: The support base (41) has an L-shaped structure and is connected to the conduit (3); A support plate (42) is connected to the support base (41) and forms a U-shaped structure with the support base (41); The connector (43) is connected to the support base (41) on one side and to the support plate (42) on the other side; Mounting hole (44) is provided on the support base (41), and the second wiring plug (6) is detachably connected to the mounting hole (44); A wire hole (45) is provided on the support base (41) and the connector (43). The wire hole (45) is connected to the mounting hole (44), and the motor wire of the sampler passes through the wire hole (45) and is connected to the second wiring plug (6).
8. The motor power supply line guide device according to claim 7, characterized in that, A locking ring (18) is provided at one end of the cable guide tube (3) near the support base (41). A locking nut (19) is movably sleeved on the cable guide tube (3). The locking nut (19) is threadedly connected to the support base (41) and presses the locking ring (18) tightly onto the support base (41).
9. The motor power supply line guide device according to claim 7, characterized in that, A rotating tube (46) is provided on the support base (41), and a rotating column (47) is provided on the support plate (42). The connector (43) is rotatably engaged with the rotating tube (46) and the rotating column (47), and the motor wire passes through the rotating tube (46).
10. The motor power supply line guide device according to claim 1, characterized in that, Two guide posts (9) are symmetrically arranged on the connecting seat (4), and the guide posts (9) are used to slide and cooperate with the guide groove on the sampling mechanism of the sampler to restrict the connecting seat (4) and the through tube (3) from rotating relative to the support base (1).