CN115234223B

CN115234223B - Telescopic rod capable of wirelessly transmitting signals and rapidly stepless distance adjustment and dynamic locking

Info

Publication number: CN115234223B
Application number: CN202211003510.5A
Authority: CN
Inventors: 杨海燕; 杨锦舟; 金朝阳
Original assignee: Dongying Norick Battery Co ltd
Current assignee: Dongying Norick Battery Co ltd
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-07-14
Anticipated expiration: 2042-08-22
Also published as: CN115234223A

Abstract

The invention discloses a telescopic rod capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking, which comprises an upper connector, a sealing plug, a compression-resistant outer tube, a sliding core tube, a fastening wedge nut, a centralizing system, an end protecting cap, a sliding pipe chain joint, a plug fixing clamping sleeve, a lower connector and a spiral line, wherein the upper connector is connected with the sealing plug; the upper linker and the lower linker form a signal wireless short transmission system, the end part of the upper linker is inserted into one end of the compression-resistant outer tube and is sealed between the compression-resistant outer tube through a sealing plug, a spiral line is arranged between the sealing plug and one end of a sliding core tube arranged in the compression-resistant outer tube, the other end of the sliding core tube extends out of the other end of the compression-resistant outer tube and is connected with a sliding tube chain joint, and the other end of the sliding tube chain joint is fixed with the end part of the lower linker. The telescopic rod can be randomly adjusted in length to realize fine adjustment or fine adjustment, and can be randomly and quickly locked after the length adjustment is determined.

Description

Telescopic rod capable of wirelessly transmitting signals and rapidly stepless distance adjustment and dynamic locking

Technical Field

The invention relates to the technical field of wireless transmission, in particular to a telescopic rod capable of wirelessly transmitting signals and achieving rapid stepless distance adjustment and dynamic locking.

Background

In logging while drilling, a telescopic rod is commonly used for connecting measurement equipment such as a logging while drilling instrument and a resistivity logging instrument in a shaft to carry out combined assembly so as to meet the requirements of testing while drilling, the lengths of the logging instruments are different and sometimes are larger, the combined sequence of the logging instruments is determined according to actual conditions or needs, in order to ensure the consistency of the lengths of corresponding sections or the total length, and the like, telescopic rods with different lengths are usually selected to complement differences for meeting during assembly, and the telescopic rod is generally not allowed to be assembled and disassembled repeatedly on site in a working site with high requirements on working efficiency, simple operation and poor site environment of a drilling platform; meanwhile, in the use process, sliding core pipes of the telescopic rods slide to different degrees under the condition of axial load, so that potential safety hazards and even quality accidents are easily caused to other instruments and equipment, and practical use is further affected. In addition, because of the limitation of the operation space of the well and the drill, the unreliable conditions such as looseness, inadequacy, error alignment and the like easily occur when the signal cable is connected with the socket, and the signal transmission is unsmooth, interrupted and the like are caused.

In the aspect of test signal transmission, the invention can realize the conversion between the wired and wireless test signals and the wireless transmission in a short distance range by using the two ends of the connector CUP with the functions of transmitting and receiving antennas, and the transmission frequency of the connector CUP can be adjusted according to the needs, and signals with corresponding frequencies can be selectively received; in the aspect of length adjustment and quick locking, under the condition that the main structure and the parts of the telescopic rod are unchanged, by adjusting the sliding core pipe of a single part of the telescopic rod, any precise distance adjustment in a larger length range can be realized in principle, namely, a series of sliding core pipes with different specifications or lengths but mutually crossed and jointed lengths can be selected to realize coarse adjustment of the lengths, and each sliding core pipe can be randomly adjusted in a certain range (0-300 mm) to realize fine adjustment or fine adjustment, and can be randomly and quickly dynamically locked after the length adjustment is determined so as to replace the original requirement of a series of telescopic rods or parts and related matters thereof; meanwhile, if one or some parts of the telescopic rod are damaged, the whole telescopic rod can be continuously used after only the damaged parts are replaced, namely, the whole telescopic rod does not need to be replaced or scrapped; in addition, the configuration of the telescopic rods can be selected in a free and random combination mode such as that a whole set of sliding core tubes is matched with a set of telescopic rods or a plurality of sets of telescopic rods are matched with a whole set of sliding core tubes, so that the cost performance is improved and the actual requirements can be met; the above similar features can solve the foregoing or existing related problems to a great extent.

Disclosure of Invention

The invention aims to provide the telescopic rod which can wirelessly transmit signals and can be used for quickly and steplessly adjusting distance and dynamically locking, and the length of the telescopic rod can be randomly adjusted to realize fine adjustment or fine adjustment, and the telescopic rod can be randomly and quickly locked after the length adjustment is determined.

In order to achieve the above purpose, the present invention provides a technical solution: a telescopic link capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking comprises an upper linker, a sealing plug, an anti-compression outer pipe, a sliding core pipe, a fastening wedge nut, a centralizing system, an end protecting cap, a sliding pipe chain joint, a plug fixing clamping sleeve, a lower linker and a spiral line; the wireless short transmission system of signal that upper link ware and lower link ware constitute, the one end of upper link ware tip of upper link ware inserts the resistance to compression outer tube, and seals between through sealed end cap and the resistance to compression outer tube, be equipped with the helix between the one end of the slip core pipe that seals end cap and set up in the resistance to compression outer tube, the other end that stretches out the resistance to compression outer tube of slip core pipe is connected with slip pipe link, the other end and the tip of lower link ware of slip pipe link are fixed, fastening slide wedge nut suit has the end helmet at the junction of stretching out the end of slip core pipe and the resistance to compression outer tube other end, the cover has the end helmet on the one end that the fastening slide wedge nut kept away from the resistance to compression outer tube still is equipped with the righting system on the fastening slide wedge nut, the cable that upper link ware tip stretched out is through sealed end cap, helix inner tube, slip core tube, the fixed cutting ferrule of end cap that sets up in slip pipe link joint get into the tip of lower link ware in proper order.

Preferably, the end of the sliding core tube is provided with a plurality of steps, and the surface of the end is provided with a certain taper.

Preferably, a scale mark is arranged in a local area of the surface of the sliding core tube, a line fixing device is arranged at the end of the sliding core tube, and/or a second groove for sealing is arranged on the surface of the end of the sliding core tube.

Preferably, threads and/or steps are arranged inside two ends of the compression-resistant outer tube, or threads are arranged inside one end of the compression-resistant outer tube, and steps are arranged inside the other end of the compression-resistant outer tube; the thread at least comprises one of conical threads, trapezoidal threads and trapezoidal conical threads.

Preferably, the structure of the fastening wedge nut is an opening split type conical nut, and the taper of the inner surface of the fastening wedge nut is matched with the taper of the surface of the sliding core tube; the external thread structure of the fastening wedge nut and the compression-resistant outer tube is at least one of an open conical thread, a trapezoid conical thread or other threads, and the taper of the fastening wedge nut is matched with the taper of the compression-resistant outer tube.

Preferably, the inner surface of the fastening wedge nut is also provided with a groove for sealing; and/or the screw thread of the part of the fastening wedge nut connected with the righting system is at least one of conical screw thread and flat screw thread matched with the righting system.

Preferably, the centralizing system comprises a centralizing bracket and a centralizing piece, wherein the centralizing piece is arranged on the centralizing bracket, and the centralizing system is of an integral or split type structure.

Preferably, the end part of the upper connector or the end part of the lower connector connected with the cable is at least one or more of conical, wedge-shaped or stepped, and the end part of the upper connector or the end part of the lower connector connected with the cable and the ground wire are manufactured into a Y-shaped end structure in an integrated structure or a semi-split mode.

Preferably, the cable is an integral end integrated terminal.

Preferably, a valve is further arranged on the compression-resistant outer tube, and when the valve is closed, the compression-resistant outer tube, the sliding core tube, the righting system, the fastening wedge nut, the end head protecting cap and the sliding pipe chain joint form a sealing system, and pressure balance is realized in the sealing system in an oiling mode; when the valve is opened, the closed system is an open system, and mud is arranged in the compression-resistant outer pipe and the sliding core pipe during working.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has the linker (such as the upper linker and the lower linker) with the functions of transmitting and receiving antenna at the two ends of the telescopic rod, can realize the conversion between the wired and wireless of the test signal, can realize the wireless transmission of a short distance, can carry out frequency adjustment, selectively transmit or receive certain/certain frequencies according to the requirement on the test signal of the wireless transmission, and can also realize the effects of simultaneous transmission of the test signal of multiple frequencies, and the like.

2. The sliding core tube is a T-shaped sliding core tube with a certain taper on the outer surface, and the end part of the sliding core tube is provided with the step baffle ring, so that the design is beneficial to building a sealed environment; the inner cavity of the sliding core tube is a cable channel, a through hole can be formed in a single side of the round tube, the sliding core tube can realize stepless and random distance adjustment of the telescopic rod through movement of the inner surface of the compression-resistant outer tube, the distance adjustment range is 0-300 mm, and the distance adjustment precision can reach +/-1 mm or higher.

3. According to the invention, a series of sliding core tubes are arranged in each set of telescopic rod, so that the working range of the telescopic rod is greatly increased, and the number of the sliding core tubes or the telescopic rods is reduced; namely, the telescopic rod has a wider working range by replacing sliding core tubes with different lengths and adding stepless distance adjustment.

4. The invention keeps the overall structure basically unchanged, uses a small number of sliding core tubes with stepwise increasing/decreasing length to reduce the number of original serial sliding core tubes or telescopic rods, realizes stepless or random distance adjustment within a certain length range by the free expansion and contraction of the sliding core tubes in the compression-resistant outer tube, and realizes quick locking by a simple and effective conical locking structure at the end part of the compression-resistant outer tube after the length is determined, thereby further meeting the use requirements of quick stepless distance adjustment, dynamic locking and no sliding in load application.

5. The cable connector adopts structural functional protection to the cable connectors at the two ends in the telescopic rod, and provides a stable voltage stabilizing working space so as to prevent the problems of short circuit caused by mud entering, cable falling, loosening, connector damage and the like caused by the movement of the distance-adjusting traction cable.

6. The invention protects the cable by adopting corresponding measures, for example, the corresponding position of the end part of the cable can also be in a conical, wedge-shaped or step and other similar structures, and is connected with the sealing plug and the like through corresponding similar matching devices (such as a line conversion connector structure) and the like, so that the structural strength of the cable is enhanced and the service life of the cable is prolonged; the line conversion connector and the end integrated terminal of the cable form a two-end line sealing system, so that penetration of slurry and the like is prevented or delayed, short circuit and the like are caused, and corrosion of the slurry and the like to the line conversion connector and the end integrated terminal of the cable is reduced or prevented.

7. After a proper amount of silicone oil or silicone grease is injected into a groove I at the outer side of a circuit adapter, a groove II at the end surface of a sliding core tube, an inner surface of a plug fixing clamping sleeve and the like, a rubber sealing ring is sleeved in the groove I and the groove II; the plug fixing clamping sleeve is arranged and fixed at the end part of the sealing plug at the end part of the upper connector according to the requirement, so as to strengthen the structures such as cables and the like, and the main structure can realize a closed structure, namely, a sealing system is formed by sealing among the compression-resistant outer tube, the sliding core tube, the righting bracket, the fastening wedge nut, the end protecting cap, the sliding pipe connector and the like, and at the moment, the pressure balance can be realized in the closed system in an oil injection mode as far as possible; the compression-resistant outer pipe is also provided with a valve, when the valve is opened, the closed system is an open system, and mud is arranged in the compression-resistant outer pipe and the sliding core pipe during working.

8. The telescopic rod has a simple integral structure and is convenient to install, disassemble, use, maintain and the like.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram of an upper linker structure according to the present invention;

FIG. 3 is a schematic view of the end structure of the upper link of the present invention;

FIG. 4 is a schematic view of the structure of the upper centralizer of the invention;

FIG. 5 is a schematic view of a seal plug structure of the present invention;

FIG. 6 is a schematic view of the structure of the compression resistant outer tube of the present invention;

FIG. 7 is a schematic view of a sliding core tube structure according to the present invention;

FIG. 8 is a schematic view of the structure of the tightening cam nut of the present invention;

FIG. 9 is a schematic diagram of a centralizing system according to the present invention;

FIG. 10 is a schematic view of the structure of the tip cap of the present invention;

FIG. 11 is a schematic view of a slide tube link structure of the present invention;

fig. 12 is a schematic structural view of a plug fixing ferrule of the present invention;

FIG. 13 is a schematic view of a helix of the present invention;

fig. 14 is a schematic view of the internal structure of the present invention.

In the figure: 1. a linker is arranged; 2. an upper centralizer; 3. sealing the plugs; 4. a compression-resistant outer tube; 5. sliding the core tube; 6. fastening the wedge nut; 7. centralizing the system; 8. an end cap; 9. a slide tube link; 10. the plug is used for fixing the clamping sleeve; 11. a lower linker; 12. a spiral line; 101. An upper linker end; 102. a line adapter; 103. a groove I; 104. a second groove; 105. and a groove III.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The linker is CONNECTOR. Also known as connectors, plugs and sockets. Generally referred to as an appliance connector. I.e. a device connecting two active devices, which carries a current or signal.

CUP (CONNECTOR UNIT PIPE) is a tubular linker unit.

Referring to fig. 1-14, the embodiment provides a telescopic rod capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking, which comprises an upper linker 1, a sealing plug 3, a compression-resistant outer tube 4, a sliding core tube 5, a fastening wedge nut 6, a righting system 7, an end cap 8, a sliding pipe link 9, a plug fixing clamping sleeve 10, a lower linker 11 and a spiral line 12; the upper linker 1 and the lower linker 11 form a signal wireless short transmission system, and test signals transmitted by other test equipment can be converted into wireless transmission signals (also called as wireless short transmission signals) capable of being transmitted in a short distance range through the signal wireless short transmission system, and the wireless transmission test signals can be subjected to frequency adjustment, selective transmission or reception of certain/certain frequencies according to requirements, and the effects of simultaneous transmission of multi-frequency test signals and the like can be realized. The upper linker end 101 of the upper linker 1 is inserted into one end of the compression-resistant outer tube 4 and is sealed with the compression-resistant outer tube 4 by the sealing plug 3; a spiral line 12 is arranged between the sealing plug 3 and one end of the sliding core tube 5 arranged in the compression-resistant outer tube 4, the other end of the sliding core tube 5 extends out of the compression-resistant outer tube 4 and is connected with a sliding tube chain joint 9, the other end of the sliding tube chain joint 9 is fixed with the end part of the lower linker 11, a fastening wedge nut 6 is sleeved at the joint of the extending end of the sliding core tube 5 and the other end of the compression-resistant outer tube 4, an end cap 8 is sleeved on one end, far away from the compression-resistant outer tube 4, of the fastening wedge nut 6, a centralizing system 7 is further arranged on the fastening wedge nut 6, and a cable extending out of the end part 101 of the upper linker sequentially passes through the sealing plug 3, the spiral line 12 inner tube, the sliding core tube 5 inner tube and a plug fixing clamping sleeve 10 arranged in the sliding tube chain joint 9 to enter the end part of the lower linker 11.

Working principle: when the distance between the upper linker 1 and the lower linker 11 needs to be adjusted, the end cap 8 is screwed to separate the end cap 8 from the righting system 7, then the righting system 7 is screwed to separate the righting system 7 from the fastening wedge nut 6, then the fastening wedge nut 6 is screwed to separate the fastening wedge nut 6 from the other end of the compression-resistant outer tube 4, the sliding core tube 5 is pulled out or retracted inwards from the compression-resistant outer tube 4, the spiral line 12 or the compression spiral line 12 is stretched when the sliding core tube 5 is pulled out or retracted inwards, when the required length is reached, the fastening wedge nut 6 is screwed to fasten the fastening wedge nut 6 with the other end of the compression-resistant outer tube 4, the righting system 7 is screwed to fasten the righting system 7 with the fastening wedge nut 6, and finally the end cap 8 is screwed to fasten the end cap 8 with the righting system 7, so that random or stepless distance adjustment is completed; the invention can also realize the adjustment of the signal transmission frequency by adjusting the coupling/corresponding distance of the antenna coil magnetic field, namely the signal transmission frequency can be adjusted in a certain range so as to meet the transmission requirements of test signals with different frequencies.

In another embodiment of the invention, the end of the sliding core tube 5 which is a key component of the telescopic rod distance adjustment, load, working length/distance positioning, line channel and locking system is provided with a plurality of steps, the surface of the end is provided with a certain taper, and the surface taper can be consistent or inconsistent, and can also be locally tapered.

In another embodiment of the invention, the sliding core 5 is provided with graduation marks in a partial area of its surface, with line fixing means at its ends and/or with sealing grooves 104 on its end surface.

In another embodiment of the present invention, the T-shaped structure of the sliding core tube 5 may be a whole or part of T-shaped structure, or may be other similar structures, and the tube wall may have a single-sided through hole, a double-sided through hole, a circular regular hole, an irregular hole, or the like, or may be non-porous, or may block or seal the existing hole.

In another embodiment of the invention, the two ends of the guide pipe and the telescopic rod bearing which are used for moving the sliding core pipe 5 are internally provided with threads and/or steps, or one end of the compression-resistant outer pipe 4 is internally provided with threads, and the other end of the compression-resistant outer pipe 4 is internally provided with steps or a step-like structure, so that the design is beneficial to building a sealed environment; the thread at least comprises one of conical thread, trapezoidal thread and trapezoidal conical thread, and the thread can also adopt measures such as copper plating to prevent adhesion, wear resistance, easy disassembly and the like.

In another embodiment of the invention, the fastening wedge nut 6 used as a key component for ensuring that the locking sliding core tube 5 does not slide under load is an open split type conical nut, and the taper of the inner surface of the fastening wedge nut is matched with the taper of the surface of the sliding core tube 5; the external thread structure that fastening slide wedge nut 6 and resistance to compression outer tube 4 are connected is at least one in open-ended toper screw thread, trapezoidal toper screw thread or other screw threads, and the tapering of fastening slide wedge nut 6 matches with resistance to compression outer tube 4's tapering, and its opening degree of depth can be local, can all or its combination, and the opening size can be unanimous, can be inconsistent, and the opening shape can be linear type, V type or other shapes, and its split is two or more in general, can be a lamella when special circumstances, adopts the integral type fastening slide wedge nut 6 of local opening, is the key part of dynamic locking, can realize random dynamic, location and atress locking.

In another embodiment of the invention, the inner surface of the fastening wedge nut 6 is also provided with a groove for sealing; and/or the threads of the portion of tightening the wedge nut 6 that connects with the righting system 7 are at least one of conical threads, flat threads that mate with the righting system 7.

In another embodiment of the present invention, the surface of the tightening wedge nut 6 may be plated with copper, or may be made of a material with wear resistance, self lubrication, and good elasticity.

In another embodiment of the present invention, the centering system 7 which is assembled on the sliding core tube 5 and is close to the end of the compression-resistant outer tube 4 in a matching way comprises a centering bracket and a centering plate, the structure can reduce the swing or the shake of the sliding core tube 5 and the telescopic rod under the load condition, the sliding core tube 5 is protected, the centering plate is arranged on the centering bracket, the centering system 7 is in an integral or split structure, and the inner surface structure of the centering system 7 is matched with the sliding core tube 5 and the fastening wedge nut 6.

In another embodiment of the present invention, the end of the upper connector end 101 or the lower connector 11 of the connection cable is at least one or more of tapered, wedge-shaped or stepped, and the end of the upper connector end 101 or the end of the lower connector 11 of the connection cable and the ground wire are manufactured into a Y-shaped end structure in an integrated structure or a semi-split manner.

In another embodiment of the present invention, in order to provide working power for the lower linker 11, the upper linker 1 and other devices at two ends of the telescopic rod, a cable passing through the inside of the telescopic rod is designed, the cable is an integrated terminal at the end, and the integrated end can be a device such as a cable plug or a plug socket, which is convenient for plugging the cable.

In addition, the end part of the cable can be integrated in the modes of injection molding, bundling, cladding, butt joint and the like, so that loosening, falling and the like are prevented; the corresponding position of the end part of the cable can also be in a conical, wedge-shaped or stepped structure and the like, and is connected with the sealing plug 3 and the like through corresponding similar matching devices and the like so as to strengthen the structural strength and prolong the service life.

The cable is bundled and then coated with a fluorine-containing plastic layer, so that the wear resistance and the scouring resistance are improved, the corrosion resistance is improved, and the service life of the cable is prolonged.

The middle part of the cable can be coated by adopting materials such as wear-resistant and corrosion-resistant plastics in an integral, separate or beam-splitting mode, and the like, the cable can be an integral type, the cable in the middle corresponding region can also be made into a spring type spiral curled shape or other freely retractable states, and the cable in the middle corresponding region of the cable can also be wound by adopting devices such as a reel, a spring and the like; the spiral line 12 can be obtained by coiling the cable in a spring spiral shape after the cable is subjected to local heat treatment, so that the moving and stretching requirements of the sliding core pipe 5 can be met, and the situation that the cable is extruded by slurry and washed by water flow and is not disturbed during working can be ensured.

The middle corresponding area (which can contain a curled part) or the freely retractable part of the cable can be protected by a piston type coaxial pipe fitting structure, and the pipe fitting can be freely retracted along with stepless distance adjustment of the telescopic rod. The piston type coaxial pipe fitting of the cable can be a hard sleeve made of metal, ceramic, plastic, composite materials and the like; the coaxial pipe fitting of the cable can be an open type or a closed type structure; the coaxial pipe fitting of the cable can form an open or closed structure together with the sealing plug 3, the sliding core pipe 5 and the like.

The cable can be integrally processed with the grounding wire, the end part of the cable can be made into a conical special-shaped structure and fastened by a corresponding device, and according to the requirement of an assembly structure, the corresponding area of the end part of the cable and rubber are integrally formed into the sealing plug 3, so that the leakage of slurry can be prevented, the line faults and the like can be caused, and the assembly is convenient.

In another embodiment of the present invention, as the line adapter 102 for connecting the cable inside the telescopic rod with the instrument and equipment lines at two ends of the telescopic rod, the structure should meet the requirements of line connection, installation, sealing, etc.

The whole structure of the line adapter 102 can also adopt an integrated or assembled structure; the line conversion connector 102 can also adopt a corresponding spring type plug seat or plug mode, and the two ends are firmly connected; the line adapter 102 may be integrated with the end terminals of the cable to form a two-end line sealing system that prevents or retards penetration of mud and the like, thereby causing short circuits and the like.

The end of the line conversion connector 102, which is close to the sealing plug 3, can also be provided with an integrated or split type protruding structure for supporting the sealing plug 3 so as to increase the compression resistance and the leakage resistance of the sealing plug 3.

The cables, the upper linker 1, the lower linker 11 and the like at the two ends of the telescopic rod are of closed structures due to the working performance, and main structures such as the compression-resistant outer tube 4, the sliding core tube 5 and the like in the middle of the telescopic rod can be of open structures, namely mud exists in the compression-resistant outer tube 4 and the sliding core tube 5 during working, and the structure has the advantages or remarkable characteristics of light structure, simplicity in use and the like.

The main structure of the invention can be a closed structure, namely, a sealing system is formed by sealing the compression-resistant outer tube 4, the sliding core tube 5, the centralizing bracket, the fastening wedge nut 6, the end head protecting cap 8, the sliding pipe chain joint 9 and the like, and at the moment, the pressure balance and the like can be realized as much as possible in the closed system by means of oil injection.

The main structure of the invention can be converted between an open structure and a closed structure through corresponding similar valve structures or devices under the condition that the material strength meets the conditions.

The method comprises the following steps: the compression-resistant outer tube 4 is also provided with a valve, and when the valve is closed, the compression-resistant outer tube 4, the sliding core tube 5, the centralizing system 7, the fastening inclined wedge screw cap 6, the end head protecting cap 8 and the sliding pipe chain joint 9 form a sealing system, and the pressure balance is realized in the sealing system in an oiling mode; when the valve is opened, the closed system is an open system, and mud is arranged in the compression-resistant outer tube 4 and the sliding core tube 5 during operation.

According to the use requirements among different test equipment/instrument connections, the invention can realize the extension of the telescopic rod by adding fixed/extension short sections and other modes at proper positions between the upper connector 1 and the compression-resistant outer tube 4, between the sliding tube chain joint 9 and the lower connector 11 or at other positions of the telescopic rod; the length of the telescopic rod can be changed by replacing the sliding core tube 5 with different lengths under the condition that the structure of the compression-resistant outer tube 4 is unchanged; the length of the telescopic rod can be changed by replacing the compression-resistant outer tube 4 with different lengths under the condition that the structure of the sliding core tube 5 is unchanged; the length of the telescopic rod can be changed by simultaneously replacing the compression-resistant outer tube 4 and the sliding core tube 5 with different lengths.

The invention aims to research and invent a telescopic rod and a method which can wirelessly transmit test signals in a short distance, can quickly, accurately and steplessly adjust the distance, can implement timely dynamic locking and cannot slide under a load condition after locking. The main technical requirements are as follows:

the method comprises the steps that test signals detected by test equipment/instruments below a telescopic rod in a drill boat can be received by a lower linker 11 with a transmitting antenna function at the lower end of the telescopic rod after being transmitted in a wireless mode and converted into wired signals, the wired signals are transmitted to an upper linker 1 with a receiving antenna function above the telescopic rod through a cable, the wired signals are received by the upper linker 1 and converted into wireless signals to be transmitted to the outside of the upper linker, wireless transmission in a working range (within 10 m) of the telescopic rod is achieved, meanwhile, the transmitting and receiving frequencies of the signals can be adjusted according to working requirements, simultaneous transmission of multi-frequency signals can be achieved if necessary, and the like;

the stepless distance adjustment range of each sliding core tube 5 is 0-300 mm (the special situation or the requirement can be enlarged or otherwise determined), the series number of the sliding core tubes 5 of the telescopic rod can be greatly reduced while the efficient and accurate construction is carried out, the various related costs are further reduced, and the working efficiency of installation, disassembly, maintenance and the like is improved;

the dynamic locking structure is convenient for realizing quick, simple and safe locking after the stepless distance adjustment of the sliding core tube 5, and can ensure that the sliding rod does not slide under the load condition after the locking;

the cable joints at the two ends in the telescopic rod are protected by structural functionality, and a stable voltage stabilizing working space is provided, so that the slurry is prevented from entering to cause short circuit of a circuit, and the cable is prevented from falling off, loosening, joint damage and the like due to the movement of the distance-adjusting traction cable;

fifthly, adopting corresponding measures to protect the cable, reducing or preventing corrosion of slurry and the like on the cable, and prolonging the service life;

the telescopic link overall structure is succinct, is convenient for install, dismantle, use and maintain etc..

The sealing structure and mounting precautions of the present invention are as follows:

(1) Connecting the sealing plug 3 of the upper linker end 101 with the curled end of the cable as required; after a proper amount of silicone oil or silicone grease is injected into the groove I103 at the outer side of the line adapter 102, a rubber sealing ring is sleeved in the groove I103; then, after a proper amount of silicone oil or silicone grease is respectively injected into the contact area between the inner wall of the upper connector end 101 and the outer surface of the line conversion connector 102, the sealing plug 3 is pushed into the upper connector end 101, as shown in fig. 3;

(2) After a proper amount of silicone oil or silicone grease is injected into the inner surface of the plug fixing sleeve 10, the plug fixing sleeve 10 is installed and fixed at the end part of the sealing plug 3 of the upper connector end part 101 according to requirements so as to strengthen the spiral line 12 and the like, as shown in fig. 12-13;

(3) After a proper amount of silicone oil or silicone grease is injected into the second groove 104 on the outer surface of the T-shaped end of the sliding core tube 5, a rubber sealing ring is sleeved in the second groove 104, as shown in fig. 7;

(4) The cable straight end or the unfixed end passes through the sliding core tube 5 in a mode of entering from the three-dimensional T-shaped end of the sliding core tube 5, and the cable is fixed at the T-shaped end after the exposed cable length at the tail end of the sliding core tube 5 meets the subsequent installation requirement; the cable exposed after passing through can be temporarily fixed by adopting corresponding measures under the condition of ensuring the safety of the cable, so that retraction is prevented; such as cable retraction, can be hooked or reassembled with corresponding hooks;

(5) After a proper amount of silicone oil or silicone grease is injected into a groove III 105 on the outer surface of the upper connector end 101, a rubber sealing ring is sleeved in the groove III 105, as shown in fig. 3;

(6) The tail end (i.e. a non-T-shaped end) of the sliding core tube 5 passes through the compression-resistant outer tube 4 in a mode of entering from the inner threaded end of the compression-resistant outer tube 4, and then the compression-resistant outer tube 4 is in threaded fastening connection with the upper linker 1 by using special tools such as a pipe wrench and the like; the upper centralizer 2 is installed and fastened at the corresponding position of the upper linker 1 in a screwing mode; sleeving a centralizing bracket from the right end of the sliding core tube 5 to a fastening inclined wedge nut 6, screwing the centralizing bracket to be tight by using special tools such as pipe tongs and the like, sleeving an end cap 8 from the right end of the sliding core tube 5 to the centralizing bracket, and screwing the centralizing bracket to be tight by using special tools such as pipe tongs and the like;

(7) The tail end of the linear end of the cable passes through the conical end of the outer surface of the sliding pipe chain joint 9, and then the sliding pipe chain joint 9 and the sliding core pipe 5 are rotated to be tight by special tools such as pipe tongs;

(8) Installing and connecting the tail end of the linear end of the cable with the sealing plug 3 at the end part of the lower linker 11 according to requirements; after a proper amount of silicone oil or silicone grease is injected into the inner surface of the plug fixing sleeve 10, the plug fixing sleeve 10 is fixedly connected with the cable and the sealing plug 3 according to requirements; pushing the sliding pipe into the step of the inner wall of the sliding pipe chain joint 9; if necessary, a spring ring and the like can be put in for limiting;

(9) After a proper amount of silicone oil or silicone grease is injected into a groove on the outer surface of the end part of the lower connector 11, a rubber sealing ring is sleeved in the groove;

(10) The lower linker 11 and the slide pipe chain joint 9 are rotated to be tight by special tools such as pipe tongs;

(11) The upper linker 1, the sealing plug 3, the compression-resistant outer tube 4, the sliding core tube 5, the righting system 7, the end protecting cap 8, the sliding pipe chain joint 9, the plug fixing clamping sleeve 10, the lower linker 11, the cable and the like jointly form a two-end line sealing and fixing system, as shown in fig. 14, the cable can be ensured to normally work and be stable in an open and closed environment, and liquid, viscous fluid such as slurry and the like can be prevented from entering;

(12) The telescopic rod is connected in the assembling process of the telescopic rod on the testing and operating platform, and the telescopic rod is assembled after the assembling process is completed; the dismantling mode is generally opposite;

(13) When the telescopic rod is used on a drilling platform, the assembled telescopic rod is lifted up according to the upper direction of the upper connector 1, the lower connector 11 is connected with other logging-while-drilling instruments in a well sleeve, and then the telescopic rod is properly lowered or fixed according to the specification so as to prepare for telescopic rod distance adjustment;

testing the length of the telescopic rod, if the length meets the use requirement, checking and confirming the fastening and sealing conditions of all parts of the telescopic rod again, and then lowering, connecting an upper end instrument and the like according to the requirement; if the length of the existing telescopic rod does not meet the use requirement, sequentially unscrewing the end cap 8, the righting bracket and the fastening wedge nut 6, adjusting the sliding core tube 5 to a proper position, sequentially screwing the fastening wedge nut 6, the righting bracket and the end cap 8, and then carrying out the operation;

(14) Properly lowering the telescopic rod to a proper position along a shaft, respectively connecting the upper connector 1 with an instrument above the logging while drilling, screwing and performing relevant detection; then, carrying out subsequent assembly work according to operation requirements;

(15) After the telescopic rod is used, dismantling the telescopic rod in a mode of being connected with the logging while drilling instrument in an opposite mode, namely dismantling connecting instruments, circuits and the like above the telescopic rod firstly, and then dismantling the lower part of the telescopic rod;

(16) After the telescopic rod is removed, if the holes on the wall of the sliding core pipe 5 are opened, that is, slurry exists in the working balance cavity system, after the lower connector 11, the sliding pipe chain joint 9 and the like are removed, clean water or tap water is injected from the holes on the wall of the sliding core pipe 5 for cleaning; if the holes on the wall of the sliding core pipe 5 are fastened and closed by bolts, that is, no slurry exists in the working balance cavity system, the working balance cavity system can be not cleaned or determined according to the situation;

(17) After the telescopic rod is used, the telescopic rod is disassembled to check the integrity, the abrasion condition, the line integrity and the like of the telescopic rod, and particularly the upper centralizer 2, the sealing plug 3, the sliding core tube 5, the fastening wedge nut 6 and the like are replaced when necessary by the upper centralizer 2, the sealing plug 3, the sealing ring and other vulnerable parts.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking is characterized by comprising an upper linker (1), a sealing plug (3), a compression-resistant outer tube (4), a sliding core tube (5), a fastening wedge nut (6), a centralizing system (7), an end protecting cap (8), a sliding pipe link joint (9), a plug fixing clamping sleeve (10), a lower linker (11) and a spiral line (12); the utility model provides a wireless short transmission system of signal is constituteed with lower linker (11) to go up linker (1), go up the one end that links ware tip (101) of linker (1) and insert resistance to compression outer tube (4), and seal between resistance to compression outer tube (4) through sealed end cap (3), be equipped with helix (12) between sealed end cap (3) and the one end of sliding core tube (5) that sets up in resistance to compression outer tube (4), the other end that stretches out resistance to compression outer tube (4) of sliding core tube (5) with sliding tube link joint (9) are connected, the other end of sliding tube link joint (9) is fixed with the tip of lower linker (11), the junction of fastening wedge nut (6) suit at the extension end of sliding core tube (5) and resistance to compression outer tube (4) other end, the cover has cap (8) on the one end that fastening wedge nut (6) kept away from resistance to compression outer tube (4), still be equipped with on the fastening wedge nut (6) and right system (7), the cable that upper linker tip (101) stretches out in proper order, cable (3), the end of sliding core tube (3) of sliding core tube (11) are passed through, the end cap (10) of sliding core tube link joint (11) of sliding core tube.

2. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking according to claim 1, wherein the end part of the sliding core tube (5) is provided with a plurality of steps, and the surface of the end part is provided with a certain taper.

3. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking according to claim 1, wherein the surface partial area of the sliding core tube (5) is provided with scale marks, the end part of the sliding core tube is provided with a circuit fixing device, and/or the end surface of the sliding core tube is provided with a second groove (104) for sealing.

4. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking according to claim 1, wherein threads and/or steps are arranged inside two ends of the compression-resistant outer tube (4), or threads are arranged inside one end of the compression-resistant outer tube (4), and steps are arranged inside the other end of the compression-resistant outer tube; the thread at least comprises one of conical threads, trapezoidal threads and trapezoidal conical threads.

5. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking according to claim 1, wherein the fastening wedge nut (6) is an open split type conical nut, and the inner surface taper of the fastening wedge nut is matched with the surface taper of the sliding core tube (5); the external thread structure of the fastening wedge nut (6) and the compression-resistant outer tube (4) is at least one of an open conical thread, a trapezoid conical thread or other threads, and the taper of the fastening wedge nut (6) is matched with the taper of the compression-resistant outer tube (4).

6. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking according to claim 1, wherein the inner surface of the fastening wedge nut (6) is also provided with a groove for sealing; and/or the screw thread of the part of the fastening wedge nut (6) connected with the righting system (7) is at least one of conical screw thread and flat screw thread matched with the righting system (7).

7. The telescopic rod capable of wirelessly transmitting signals and achieving rapid stepless distance adjustment and dynamic locking according to claim 1, wherein the righting system (7) comprises a righting bracket and a righting piece, the righting piece is arranged on the righting bracket, and the righting system (7) is of an integral or split type structure.

8. The telescopic link capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking according to claim 1, wherein the end part of the upper connector (101) or the end part of the lower connector (11) connected with the cable is at least one or more of conical, wedge-shaped or stepped, and the end part of the upper connector (101) or the end part of the lower connector (11) connected with the cable and a grounding wire are manufactured into a Y-shaped end structure in an integrated structure or a semi-split mode.

9. The telescopic link capable of wirelessly transmitting signals and rapidly adjusting pitch steplessly and dynamically locking according to claim 1, wherein the cable is an integrated end terminal.

10. The telescopic rod capable of wirelessly transmitting signals and rapidly adjusting distance steplessly and dynamically locking according to claim 1, wherein a valve is further arranged on the compression-resistant outer tube (4), and when the valve is closed, the compression-resistant outer tube (4), the sliding core tube (5), the righting system (7), the fastening wedge nut (6), the end cap (8) and the sliding pipe chain joint (9) form a sealing system, and pressure balance is realized in the sealing system in an oiling mode; when the valve is opened, the closed system is an open system, and mud is arranged in the compression-resistant outer tube (4) and the sliding core tube (5) during operation.