Anti-vibration RFID underground plugging device
By adopting a multi-layer cavity structure and spring connection in the downhole RFID device, combined with the slide rail and slide design, the problem of RFID equipment being easily damaged due to vibration during downhole drilling is solved, and higher earthquake resistance and equipment reliability are achieved .
Patent Information
- Application Number
- CN202411328569.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
RFID antennas and readers and writers are easily damaged due to vibration during underground drilling, resulting in high equipment maintenance frequency, making it difficult for the existing technology to effectively deal with this problem.
A vibration-resistant RFID downhole leak plugging device is designed. By setting a multi-layer cavity structure and vertical and horizontal spring connection in the drill barrel, it provides horizontal and longitudinal shock absorption functions, combining the slide rail and slide structure to improve the connection strength and Stability, avoid vibration damage and bumps.
It effectively reduces the maintenance frequency of RFID antennas and readers, improves the anti-seismic performance in vibrating environments, and extends the service life of the equipment.
Smart Images
Figure CN119102763A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of RFID underground application, and in particular relates to a vibration-resistant RFID underground leak plugging device. Background Art
[0002] The working principle of RFID is: the transmitting identification system forms an identification field within a certain range around it. When the electronic tag passes, the transmitting identification system can read the instructions carried by the electronic tag and complete intelligent identification. Different electronic tags can carry different instructions to guide the identification system to make different judgments. Therefore, identification and reading and writing data can be completed without mechanical contact or specific complex environments. At present, RFID technology, as the basis of the concept of the Internet of Things, is widely used in warehousing, access control, fixed asset management, information tracking, national security and other fields.
[0003] When the drill barrel is working underground, the drill bit needs to drill continuously downward, which will inevitably produce large vibrations. RFID antennas and readers are very likely to be damaged in this environment, resulting in the need to lift the well for maintenance. Therefore, an underground RFID leak plugging device that can cope with this kind of vibration is needed. Summary of the invention
[0004] In view of the problem that the RFID antenna and the reader in the prior art cannot adapt to the vibration underground, the present invention provides a vibration-resistant RFID underground leak plugging device, the purpose of which is to improve the vibration resistance of the RFID antenna and the reader underground.
[0005] The technical solution adopted by the present invention is as follows: A vibration-resistant RFID downhole plugging device, comprising a drill pipe, includes: First cavity: a second cavity is disposed inside the first cavity, the second cavity is slidably disposed inside the first cavity, and a first spring is fixedly connected between the first cavity and the second cavity; The third cavity: the third cavity is slidably disposed in the second cavity, a second spring is fixedly connected between the third cavity and the second cavity, a reader and an RFID antenna are fixedly disposed inside the second cavity, and the reader and the RFID antenna are signal-connected; the central axis of the first spring and the central axis of the second spring are perpendicular to each other.
[0006] The reader / writer signal is connected to a PLC control board, and the PLC control board signal is connected to a side-pass valve and a vertical valve.
[0007] The above scheme is adopted, wherein the third cavity is a device for installing an RFID antenna and a reader / writer, and the third cavity is arranged inside the second cavity, wherein the second spring connected between the third cavity and the second cavity can provide a shock-absorbing function in the horizontal or vertical direction; the second cavity is arranged inside the first cavity, wherein the first spring is connected between the second cavity and the first cavity, wherein the first spring can provide a shock-absorbing function in the horizontal or vertical direction for the second cavity, wherein since the central axis of the first spring and the central axis of the second spring are perpendicular to each other, there are only two situations, the first spring provides horizontal shock absorption, and the second spring provides vertical shock absorption; or the first spring provides vertical shock absorption, and the second spring provides horizontal shock absorption. Through this set structure, horizontal shock absorption and vertical shock absorption can be provided for the third cavity installed with the RFID antenna and the reader / writer at the same time, which can better adapt to the vibration environment generated during the drilling process and reduce the maintenance frequency of the RFID antenna and the reader / writer.
[0008] A first slide rail is fixed inside the first cavity, a first slider is slidably arranged on the first slide rail, and the top of the first slider is fixedly connected to the second cavity.
[0009] By adopting the above solution, the moving direction of the second cavity in the first cavity can be fixed by the first slide rail and the first slider, and the connection strength of the second cavity in the first cavity is improved to avoid the spring from being damaged during vibration.
[0010] A first sliding rod is fixedly disposed at the center axis position of the first spring. The first sliding rod passes through the side wall of the second cavity. A limiting block is fixedly disposed at the end of the first sliding rod.
[0011] A second sliding rod is fixedly arranged at the central axis of the second spring. The second sliding rod passes through the third cavity. One end of the second sliding rod is fixedly connected to the bottom of the second cavity, and the other end is fixedly connected to the top of the fixed cavity.
[0012] By adopting the above solution, the moving track of the third cavity in the second cavity can be fixed by the second sliding rod, so as to avoid the third cavity from bumping into the second cavity during the vibration process.
[0013] A third spring is fixedly connected between the top of the second cavity and the top of the third cavity, and the central axis of the third spring coincides with the central axis of the third sliding rod.
[0014] By adopting the above solution, the shock absorbing effect in the third cavity and the second cavity can be further improved, and the third cavity can be prevented from hitting the top of the second cavity.
[0015] The second cavity and the third cavity are both hollow annular structures.
[0016] By adopting the above solution, the shapes of the second cavity and the third cavity can better fit the columnar drill tube structure.
[0017] The side-pass valve comprises a hydraulic cylinder, the hydraulic cylinder is connected to a telescopic rod, and the end of the telescopic rod is fixedly connected to a valve plate; A side opening is provided on the side wall of the drill tube, and the valve plate is used for opening and closing the side opening.
[0018] The third cavity is made of non-metallic material.
[0019] A second slide rail is fixedly arranged on the drilled inner wall, a second slider is slidably arranged on the second slide rail, and a side of the second slider away from the second slide rail is fixedly connected to the third cavity.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The third cavity is a device for installing an RFID antenna and a reader, and the third cavity is arranged inside the second cavity, wherein the second spring connected between the third cavity and the second cavity can provide a shock-absorbing function in the horizontal or vertical direction; the second cavity is arranged inside the first cavity, wherein the first spring is connected between the second cavity and the first cavity, wherein the first spring can provide a shock-absorbing function in the horizontal or vertical direction for the second cavity, wherein since the central axis of the first spring and the central axis of the second spring are perpendicular to each other, there are only two situations, the first spring provides horizontal shock absorption, and the second spring provides longitudinal shock absorption; or the first spring provides longitudinal shock absorption, and the second spring provides horizontal shock absorption. Through this set structure, the third cavity installed with the RFID antenna and the reader can provide horizontal shock absorption and longitudinal shock absorption at the same time, which can better adapt to the vibration environment generated during the drilling process and reduce the maintenance frequency of the RFID antenna and the reader.
[0021] 2. The moving direction of the second cavity in the first cavity can be fixed by the first slide rail and the first slider, and the connection strength of the second cavity in the first cavity is improved to avoid the spring from being damaged during vibration.
[0022] 3. The moving track of the third cavity in the second cavity can be fixed by the second sliding rod to avoid the third cavity from bumping into the second cavity during vibration. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is a schematic diagram of the internal structure of an embodiment of the present invention; Figure 2 is a schematic diagram of a third cavity structure of an embodiment of the present invention; Figure 3 is a schematic diagram of the first slide rail structure of an embodiment of the present invention; Figure 4 It is a schematic diagram of the installation position of the RFID antenna and the reader / writer according to an embodiment of the present invention.
[0024] Figure markings: 1-first cavity; 2-second cavity; 3-PLC control board; 4-hydraulic cylinder; 5-telescopic rod; 6-valve plate; 7-vertical valve; 8-first slide bar; 9-first spring; 10-limiting block; 11-reader / writer; 12-second slide rail; 13-second slider; 15-second slide bar; 16-second spring; 17-third spring; 18-first slide rail; 19-first slider; 20-RFID antenna; 21-third cavity. DETAILED DESCRIPTION
[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.
[0026] Combine the following Figure 1-Figure 4 The present invention is described in detail.
[0027] Embodiment 1: In this embodiment, a downhole RFID plugging device is mainly disclosed, which is configured by mutually nesting the first cavity 1, the second cavity 2 and the third cavity 21, and arranging springs in different directions in the gaps between the cavities to cope with vibrations in various directions, and specifically includes: First cavity 1: a second cavity 2 is disposed inside the first cavity 1, the second cavity 2 is slidably disposed inside the first cavity 1, and a first spring 9 is fixedly connected between the first cavity 1 and the second cavity 2; The third cavity 21: the third cavity 21 is slidably disposed in the second cavity 2, a second spring 16 is fixedly connected between the third cavity 21 and the second cavity 2, a reader / writer 11 and an RFID antenna 20 are fixedly disposed inside the second cavity 2, and the reader / writer 11 and the RFID antenna 20 are signal-connected; the central axis of the first spring 9 and the central axis of the second spring 16 are perpendicular to each other.
[0028] The reader / writer 11 is signal-connected to the PLC control board 3 , and the PLC control board 3 is signal-connected to the side-pass valve and the vertical valve 7 .
[0029] A first slide rail 18 is fixed inside the first cavity 1 , a first slider 19 is slidably disposed on the first slide rail 18 , and the top of the first slider 19 is fixedly connected to the second cavity 22 .
[0030] A first sliding rod 8 is fixedly disposed at the center axis position of the first spring. The first sliding rod 8 passes through the side wall of the second cavity 2 . A limiting block 10 is fixedly disposed at the end of the first sliding rod 8 .
[0031] A second slide rod 15 is fixedly arranged at the central axis of the second spring 16 . The second slide rod 15 passes through the third cavity 21 . One end of the second slide rod 15 is fixedly connected to the bottom of the second cavity 2 , and the other end is fixedly connected to the top of the fixed cavity 2 .
[0032] A third spring 17 is fixedly connected between the top of the second cavity 2 and the top of the third cavity 21 , and the central axis of the third spring 17 coincides with the central axis of the third sliding rod 15 .
[0033] The second cavity 2 and the third cavity 21 are both hollow annular structures.
[0034] The side-pass valve comprises a hydraulic cylinder 4, the hydraulic cylinder 4 is connected to a telescopic rod 5, and the end of the telescopic rod 5 is fixedly connected to a valve plate 6; A side opening is provided on the side wall of the drill tube, and the valve plate 6 is used to open and close the side opening.
[0035] The third cavity 21 is made of non-metallic material.
[0036] A second slide rail 12 is fixedly disposed on the drilled inner wall, a second slider 13 is slidably disposed on the second slide rail 12 , and a side of the second slider 13 away from the second slide rail 12 is fixedly connected to the third cavity 21 .
[0037] In the above embodiment, the RFID antenna 20 and the reader 11 are fixedly arranged inside the third cavity 21, the third cavity 21 is slidably arranged in the second cavity 2, and the second spring 17 is connected between the third cavity 21 and the second cavity 2. In this embodiment, the second spring 17 is arranged perpendicular to the ground and is used to reduce vibration in the vertical direction. Its specific structure is as follows: Figure 2 As shown, one end of the second spring 17 is fixedly connected to the bottom end of the second cavity 2, and the other end is fixedly connected to the bottom end of the third cavity 21. A second slide bar 15 is fixedly arranged in the middle of the second spring 17, wherein the third cavity 21 is sleeved in the middle of the second slide bar 15 and can move along the direction of the second slide bar 15. Through this solution, the third cavity 21 can achieve shock absorption in the vertical direction in the second cavity 2.
[0038] Furthermore, the second slide rail 12 is fixedly arranged on the inner wall of the drill tube, and the slider 13 on the second slide rail 12 can further improve the stability of the sliding track of the third cavity 21 .
[0039] After the third cavity 21 is damped in the vertical direction, the first spring 9 is transversely arranged between the second cavity 2 and the first cavity 1 to cope with the transverse vibration of the drill pipe during the drilling process, wherein the two ends of the first spring 9 are respectively fixedly connected to the first cavity 1 and the second cavity 2, and a first sliding rod 8 is fixedly arranged in the middle of the first spring 9, wherein one end of the first sliding rod 8 is fixedly arranged on the inside of the first cavity 1, and the other end passes through the side wall of the second cavity 2 and is fixed inside the second cavity 2. The specific structure is as follows: Figure 2 As shown, one end of the first sliding rod 8 inside the second cavity 2 is fixedly connected to the limit block 10 to prevent the second cavity 2 from moving beyond the limit and causing collision in the first cavity 1.
[0040] Furthermore, the first slide rail 18 is fixedly disposed between the bottom of the first cavity 1 and the bottom of the second cavity 2 , and is used to limit the moving track of the second cavity 2 in the first cavity 1 .
[0041] Furthermore, the side-pass valve and the vertical valve 7 in the present invention are controlled by the PLC control board 4, wherein the PLC control board 4 receives the signal from the reader 11 to control the vertical valve 7 and the hydraulic cylinder 4. When the RFID tag is dropped from the drill tube and enters the radiation range of the RFID antenna 20, the RFID antenna 20 can recognize the signal of the RFID tag and send the signal to the PLC control board 7, and the PLC control board 7 sends corresponding control signals to the side-pass valve and the vertical valve 7.
[0042] The above embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.
Claims
1. A vibration-resistant RFID downhole plugging device, comprising a drill pipe, characterized in that: include: First cavity (1): a second cavity (2) is arranged inside the first cavity (1), the second cavity (2) is slidably arranged inside the first cavity (1), and a first spring (9) is fixedly connected between the first cavity (1) and the second cavity (2); A third cavity (21): the third cavity (21) is slidably disposed in the second cavity (2); a second spring (16) is fixedly connected between the third cavity (21) and the second cavity (2); a reader / writer (11) and an RFID antenna (20) are fixedly disposed inside the second cavity (2); the reader / writer (11) and the RFID antenna (20) are signal-connected; a central axis of the first spring (9) and a central axis of the second spring (16) are perpendicular to each other.
2. The reader / writer (11) is signal-connected to a PLC control board (3), and the PLC control board (3) is signal-connected to a side-pass valve and a vertical valve (7).
3. The vibration-resistant RFID underground leak-proof equipment according to claim 1 is characterized in that: A first slide rail (18) is fixed inside the first cavity (1), a first slider (19) is slidably arranged on the first slide rail (18), and the top of the first slider (19) is fixedly connected to the second cavity (22).
4. The vibration-resistant RFID underground leak-proof equipment according to claim 1 is characterized in that: A first sliding rod (8) is fixedly arranged at the center axis position of the first spring, the first sliding rod (8) passes through the side wall of the second cavity (2), and a limiting block (10) is fixedly arranged at the end of the first sliding rod (8).
5. The vibration-resistant RFID underground leak-proof equipment according to claim 1, characterized in that: A second slide rod (15) is fixedly arranged at the central axis of the second spring (16), and the second slide rod (15) passes through the third cavity (21). One end of the second slide rod (15) is fixedly connected to the bottom of the second cavity (2), and the other end is fixedly connected to the top of the fixed cavity (2).
6. The vibration-resistant RFID underground leak-proof equipment according to claim 4 is characterized in that: A third spring (17) is fixedly connected between the top of the second cavity (2) and the top of the third cavity (21), and the central axis of the third spring (17) coincides with the central axis of the third sliding rod (15).
7. The vibration-resistant RFID underground leak plugging device according to claim 1 is characterized in that: The second cavity (2) and the third cavity (21) are both hollow annular structures.
8. The vibration-resistant RFID underground leak-proof device according to claim 1, characterized in that: The side-pass valve comprises a hydraulic cylinder (4), the hydraulic cylinder (4) is connected to a telescopic rod (5), and the end of the telescopic rod (5) is fixedly connected to a valve plate (6); A side opening is provided on the side wall of the drill tube, and the valve plate (6) is used to open and close the side opening.
9. The vibration-resistant RFID underground leak-proof device according to claim 1, characterized in that: The third cavity (21) is made of non-metallic material.
10. The vibration-resistant RFID underground leak plugging device according to claim 1, characterized in that: A second slide rail (12) is fixedly arranged on the drilled inner wall, a second slider (13) is slidably arranged on the second slide rail (12), and a side of the second slider (13) away from the second slide rail (12) is fixedly connected to the third cavity (21).