Oil drill rod magnetic flux leakage early warning structure

Abstract

The utility model relates to the technical field of drilling rod magnetic leakage early warning structures, and discloses a petroleum drilling rod magnetic leakage early warning structure which comprises a magnetic leakage detection vehicle, a non-magnetic-conductive base is installed at the bottom end in the magnetic leakage detection vehicle, and magnetic yoke type magnetizers are arranged at the top ends, on the two sides of the non-magnetic-conductive base, in the magnetic leakage detection vehicle. A connecting block is installed at the bottom end of the non-magnetic-conductive base, and a magnetic gathering plate is installed at the bottom end of the connecting block. The magnetic leakage detection vehicle detects electromagnetic signals on the petroleum drill rod through the magnetic sensor to find out magnetic leakage points on the drill rod, then the electric telescopic rod is controlled to be shortened, the pressing roller extrudes the clamping blocks downwards, the clamping blocks on the two sides enclasp the petroleum drill rod inwards, forward movement of the magnetic leakage detection vehicle is hindered, and a certain early warning effect is achieved. Therefore, people can mark the specific magnetic flux leakage position on the drill rod conveniently, and follow-up statistical processing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic flux leakage warning structures for drill pipes, and particularly relates to a magnetic flux leakage warning structure for oil drill pipes. Background Technique

[0002] The purpose of a drill pipe is to transport drilling mud to the drill bit and, together with the drill bit, raise, lower, or rotate the bottom hole device. Therefore, the drill pipe must be able to withstand huge internal and external pressures, torsion, bending, and vibration. After long-term operation of the drill pipe, damage is likely to remain on its surface. To ensure the normal use of the drill pipe, a magnetic flux leakage detection device is required to inspect the surface defects of the drill pipe;

[0003] Chinese Patent Authorization Publication No. CN213779959 discloses a self-propelled magnetic flux leakage flaw detection system for drill pipes, including a centering wheel type trolley and a flaw detection device. The centering wheel type trolley includes a driving device and centering wheels. Each of the centering wheels is provided with a through hole coaxial with the centering wheel. The magnetic flux leakage detection system of the utility model is light in weight, small in volume, easy to carry, and convenient to operate, and is suitable for the detection of different specifications of new and old drill pipes on well sites and in factories. The above existing technical solutions have the following deficiencies: Although the device drives the flaw detection device to go straight through the centering type trolley, since there is no corresponding magnetic leakage warning structure for the defect positions on the drill pipe in this structure, it is easy that after the entire detection is completed, although it is possible to know whether there are defects in the drill pipe, it is impossible to give a reminder for the specific defect positions. Therefore, there is a certain room for improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a magnetic flux leakage warning structure for oil drill pipes to solve the problem that the existing magnetic flux leakage detection device for oil drill pipes is not easy to give a warning prompt for the magnetic flux leakage position as mentioned in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A magnetic flux leakage warning structure for an oil drill pipe, including a magnetic flux leakage detection vehicle. At the bottom end inside the magnetic flux leakage detection vehicle, a non-magnetic base is installed. At the top end inside the magnetic flux leakage detection vehicle on both sides of the non-magnetic base, yoke-type magnetizers are provided. At the bottom end of the non-magnetic base, a connecting block is installed, and at the bottom end of the connecting block, a magnetic flux concentrating plate is installed. At the bottom end of the magnetic flux concentrating plate, a probe is embedded, and at the bottom end of the probe, magnetic sensors are evenly arranged. At the top end of the non-magnetic base, an electric telescopic rod is installed, and the top end of the electric telescopic rod extends to the outside of the magnetic flux leakage detection vehicle and is installed with a lifting plate. The output end of the magnetic sensor is electrically connected to the input end of the electric telescopic rod through a controller. On both sides of the lifting plate, a guide rod penetrates, and the bottom ends of the guide rods are connected to the top end of the magnetic flux leakage detection vehicle. At both sides of the bottom end of the lifting plate, pressing plates are installed, and at the bottom ends of the pressing plates, pressing rollers are installed. Oppositely arranged at the bottom end of the magnetic flux leakage detection vehicle are two fixing plates, and inside both fixing plates, clamping blocks penetrate. The outer sides of the clamping blocks are abutted against the bottom ends of the pressing rollers. Between the inside of the clamping blocks and the inner walls of the fixing plates, a guiding mechanism is connected. On the inner sides of the clamping blocks, clamping plates are installed, and at both ends of the inner sides of the clamping plates, a sound warning component is provided.

[0006] Preferably, the outer side of the clamping block is a slope, and this slope slopes downward from the inside to the outside. In the initial state, the pressing roller abuts against the top end of the slope of the clamping block.

[0007] Preferably, the guiding mechanism includes a guiding hole opened inside the clamping block, and inside the guiding hole, a fixed guiding block penetrates. Both ends of the fixed guiding block extend to the outside of the guiding hole and are connected to the inner side wall of the fixing plate. On one side of the fixed guiding block, a spring is installed, and one end of the spring is connected to the inner side wall of the guiding hole.

[0008] Preferably, the spring forms a left-right sliding structure with the fixing plate through the cooperation of the guiding hole and the fixed guiding block, and the clamping block maintains a moving trend outward under the elasticity of the spring.

[0009] Preferably, the sound warning component includes an airbag installed at one end of the inner side of the clamping plate, and at one end of the airbag, a one-way intake pipe is installed. Inside the airbag, a one-way exhaust pipe is installed, and one end of the one-way exhaust pipe penetrates the inside of the clamping plate. On the side of the clamping plate away from the airbag, a whistle is installed, and the intake end of the whistle is communicated with the exhaust end of the one-way exhaust pipe.

[0010] Preferably, the airbag is arranged on the clamping side of the clamping plate, and the airbag can be deformed and reset.

[0011] Preferably, there are two guide rods, and the lifting plate forms an up-down sliding structure with the magnetic flux leakage detection vehicle through the cooperation of the guide rods.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] (1) By detecting the electromagnetic signal on the oil drill pipe through the magnetic sensor to find the magnetic leakage points on the drill pipe, then controlling the electric telescopic rod to shorten, so that the pressure roller squeezes the clamping block downward, making the two clamping blocks hold the oil drill pipe inward, thus hindering the forward movement of the magnetic leakage detection vehicle, achieving a certain early warning effect, so as to facilitate people to mark the specific magnetic leakage position on the drill pipe for subsequent statistical processing;

[0014] (2) By utilizing the inward holding action of the clamping plate on the drill pipe, the airbag is squeezed by the clamping plate and the outer wall of the drill pipe, so that the internal air flows to the whistle, making the airbag emit a sound, and using the sound to further improve the early warning effect on the detection personnel, and then facilitating the marking of the magnetic leakage position on the drill pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is the front view sectional structure schematic diagram of the present utility model;

[0017] Figure 2 It is of the present utility model Figure 1 Schematic diagram of the structure at A in;

[0018] Figure 3 It is the three-dimensional structure schematic diagram of the clamping plate of the present utility model;

[0019] Figure 4 It is the three-dimensional structure schematic diagram of the distribution of the fixed guide blocks of the present utility model;

[0020] Figure 5 It is the sectional three-dimensional structure schematic diagram of the magnetic concentrating plate of the present utility model.

[0021] Explanation of the reference numerals in the drawings: 1, magnetic leakage detection vehicle; 2, yoke type magnetizer; 3, non-magnetic base; 4, connecting block; 5, magnetic concentrating plate; 6, probe; 7, magnetic sensor; 8, electric telescopic rod; 9, lifting plate; 10, pressing plate; 11, pressure roller; 12, fixing plate; 13, clamping block; 14, clamping plate; 15, sound warning component; 1501, airbag; 1502, one-way air inlet pipe; 1503, one-way air outlet pipe; 1504, whistle; 16, guiding hole; 17, fixed guide block; 18, spring; 19, guiding rod. Detailed implementation mode

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 - 5 , an embodiment provided by the present utility model: A magnetic flux leakage warning structure for an oil drill pipe, including a magnetic flux leakage detection vehicle 1. A non-magnetic base 3 is installed at the bottom end inside the magnetic flux leakage detection vehicle 1, and magnetic yoke type magnetizers 2 are arranged at the top ends inside the magnetic flux leakage detection vehicle 1 on both sides of the non-magnetic base 3. A connecting block 4 is installed at the bottom end of the non-magnetic base 3, and a magnetic concentrating plate 5 is installed at the bottom end of the connecting block 4. A probe 6 is embedded at the bottom end of the magnetic concentrating plate 5, and magnetic sensors 7 are uniformly arranged at the bottom end of the probe 6. An electric telescopic rod 8 is installed at the top end of the non-magnetic base 3, and the top end of the electric telescopic rod 8 extends to the outside of the magnetic flux leakage detection vehicle 1 and is installed with a lifting plate 9. The output end of the magnetic sensor 7 is electrically connected to the input end of the electric telescopic rod 8 through a controller. Guide rods 19 penetrate through both sides of the lifting plate 9;

[0024] There are two guide rods 19, and the lifting plate 9 and the magnetic flux leakage detection vehicle 1 form a vertical sliding structure through the cooperation of the guide rods 19;

[0025] Specifically, as Figure 1 shown, when in use, the guide rods 19 are used to further limit and guide the movement of the lifting plate 9, so that the pressure roller 11 only moves in the vertical direction, so as to push the clamping block 13 to move in the horizontal direction;

[0026] The bottom ends of the guide rods 19 are all connected to the top end of the magnetic flux leakage detection vehicle 1. Pressing plates 10 are installed on both sides of the bottom end of the lifting plate 9, and pressure rollers 11 are installed at the bottom ends of the pressing plates 10. Two fixed plates 12 are arranged opposite to each other at the bottom end of the magnetic flux leakage detection vehicle 1, and clamping blocks 13 penetrate through the interiors of the two fixed plates 12;

[0027] The outer side of the clamping block 13 is a slope, and the slope inclines downward from the inside to the outside. In the initial state, the pressure roller 11 abuts against the top end of the slope of the clamping block 13;

[0028] Specifically, as Figure 1 、 Figure 4As shown in the figure, during use, the detection signal of the drill pipe by the magnetic sensor 7 is utilized to achieve the start control of the electric telescopic rod 8, so that when a magnetic leakage phenomenon is detected, the advancement of the magnetic leakage detection vehicle 1 can be timely blocked to achieve a warning effect;

[0029] The outer sides of the clamping blocks 13 are all in contact with the bottom ends of the pressure rollers 11, and guiding mechanisms are connected between the interiors of the clamping blocks 13 and the inner walls of the fixing plates 12;

[0030] The guiding mechanism includes guiding holes 16 opened inside the clamping blocks 13, and fixing guide blocks 17 penetrate through the interiors of the guiding holes 16. Both ends of the fixing guide blocks 17 extend to the outside of the guiding holes 16 and are connected to the inner side walls of the fixing plates 12. A spring 18 is installed on one side of the fixing guide block 17, and one end of the spring 18 is connected to the inner side wall of the guiding hole 16;

[0031] The spring 18 and the fixing plate 12 form a left-right sliding structure through the cooperation of the guiding hole 16 and the fixing guide block 17, and the clamping blocks 13 maintain an outward moving trend under the elasticity of the spring 18;

[0032] Specifically, as Figure 1 、 Figure 4 and Figure 5 shown in the figure, during use, the guiding mechanism is utilized to facilitate the limitation of the moving direction and moving distance of the clamping blocks 13 to ensure the moving stability of the clamping blocks 13;

[0033] Clamping plates 14 are installed on the inner sides of the clamping blocks 13, and sound warning components 15 are arranged at both ends of the inner sides of the clamping plates 14;

[0034] The sound warning component 15 includes an airbag 1501 installed at one end of the inner side of the clamping plate 14, and a one-way intake pipe 1502 is installed at one end of the airbag 1501. A one-way exhaust pipe 1503 is installed inside the airbag 1501, and one end of the one-way exhaust pipe 1503 penetrates through the interior of the clamping plate 14. A whistle 1504 is installed on the side of the clamping plate 14 away from the airbag 1501, and the intake end of the whistle 1504 is communicated with the exhaust end of the one-way exhaust pipe 1503;

[0035] The airbag 1501 is arranged on the clamping side of the clamping plate 14, and the airbag 1501 can be deformed and reset;

[0036] Specifically, as Figure 1 、 Figure 2 and Figure 3 shown in the figure, during use, the extrusion of the drill pipe by the clamping plate 14 is utilized to cause the airbag 1501 to deform to discharge air, thereby blowing the whistle 1504, and then the sound is utilized to further improve the warning effect.

[0037] Working principle: When the utility model is in use, first place the magnetic leakage detection vehicle 1 on the oil drill pipe, start the magnetic leakage detection vehicle 1 to move forward along the drill pipe, start the yoke type magnetizer 2 to magnetize the drill pipe, and utilize the function of the magnetic sensor 7 to facilitate the detection of the magnetic field outside the drill pipe. When a defect occurs outside the drill pipe, its magnetic circuit path will change, causing magnetic field leakage, and then the magnetic sensor 7 detects relevant signals;

[0038] Secondly, the magnetic sensor 7 transmits the signal to the controller, and the controller starts the electric telescopic rod 8 to shorten, thereby pulling the lifting plate 9 to move downward, so that the pressure roller 11 synchronously descends, and the bottom end of the pressure roller 11 squeezes the inclined surface of the clamping block 13. Due to the effect of the inclined surface, the clamping block 13 moves inward along the sound warning component 15, so that the spring 18 is compressed, and then the clamping plates 14 on both sides move inward and tightly hold the outer wall of the drill pipe to hinder the advancement of the magnetic leakage detection vehicle 1. Through this locking function, the warning prompt effect is achieved to facilitate the detection personnel to mark the magnetic leakage point;

[0039] Finally, when the clamping plate 14 moves inward, it pushes the airbag 1501 to move synchronously, and the airbag 1501 is squeezed and contracted, so that the internal air transfers to the whistle 1504 along the one-way air outlet pipe 1503, thereby making the whistle 1504 emit a sound, further improving the reminder and warning effect. When the warning ends, the clamping plate 14 resets, so that the airbag 1501 resets, and the external air refills the inside of the airbag 1501 along the one-way air inlet pipe 1502.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative labor.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An oil drill pipe magnetic flux leakage warning structure, including a magnetic flux leakage detection vehicle (1), characterized in that: At the bottom inside the magnetic leakage detection vehicle (1), a non-magnetic base (3) is installed, and at the top inside the magnetic leakage detection vehicle (1) on both sides of the non-magnetic base (3), yoke-type magnetizers (2) are provided. At the bottom of the non-magnetic base (3), a connecting block (4) is installed, and at the bottom of the connecting block (4), a magnetic concentrating plate (5) is installed. At the bottom of the magnetic concentrating plate (5), a probe (6) is embedded, and at the bottom of the probe (6), magnetic sensors (7) are evenly arranged. At the top of the non-magnetic base (3), an electric telescopic rod (8) is installed, and the top of the electric telescopic rod (8) extends to the outside of the magnetic leakage detection vehicle (1) and is provided with a lifting plate (9). The output end of the magnetic sensor (7) is electrically connected to the input end of the electric telescopic rod (8) through a controller. On both sides of the lifting plate (9), guide rods (19) penetrate through, and the bottom ends of the guide rods (19) are connected to the top of the magnetic leakage detection vehicle (1). At both sides of the bottom end of the lifting plate (9), pressing plates (10) are installed, and at the bottom ends of the pressing plates (10), pressing rollers (11) are installed. At the bottom of the magnetic leakage detection vehicle (1), two fixing plates (12) are oppositely arranged, and clamping blocks (13) penetrate through the interiors of the two fixing plates (12). The outer sides of the clamping blocks (13) are abutted against the bottom ends of the pressing rollers (11). Between the interiors of the clamping blocks (13) and the inner walls of the fixing plates (12), a guiding mechanism is connected. On the inner sides of the clamping blocks (13), clamping plates (14) are installed, and at both ends of the inner sides of the clamping plates (14), sound warning components (15) are provided.

2. The magnetic flux leakage warning structure of an oil drill pipe according to claim 1, characterized in that: The outer side of the clamping block (13) is a slope, and this slope inclines downward from the inside to the outside. In the initial state, the pressing roller (11) abuts against the top end of the slope of the clamping block (13).

3. The magnetic flux leakage warning structure for an oil drill pipe according to claim 1, wherein: The guiding mechanism includes a guiding hole (16) opened inside the clamping block (13), and a fixed guiding block (17) penetrates through the inside of the guiding hole (16). Both ends of the fixed guiding block (17) extend to the outside of the guiding hole (16) and are connected to the inner side walls of the fixing plate (12). On one side of the fixed guiding block (17), a spring (18) is installed, and one end of the spring (18) is connected to the inner side wall of the guiding hole (16).

4. A magnetic flux leakage warning structure for an oil drill pipe according to claim 3, characterized in that: The spring (18) and the fixing plate (12) form a left-right sliding structure through the cooperation of the guiding hole (16) and the fixed guiding block (17), and the clamping block (13) maintains a moving trend outward under the elasticity of the spring (18).

5. A magnetic flux leakage warning structure for an oil drill pipe according to claim 1, characterized in that: The sound warning component (15) includes an airbag (1501) installed at one end of the inner side of the clamping plate (14), and at one end of the airbag (1501), a one-way air inlet pipe (1502) is installed. Inside the airbag (1501), a one-way air outlet pipe (1503) is installed, and one end of the one-way air outlet pipe (1503) penetrates through the inside of the clamping plate (14). On the side of the clamping plate (14) away from the airbag (1501), a whistle (1504) is installed, and the air inlet end of the whistle (1504) is communicated with the air outlet end of the one-way air outlet pipe (1503).

6. The magnetic flux leakage warning structure for an oil drill pipe according to claim 5, wherein: The airbag (1501) is arranged on the clamping side of the clamping plate (14), and the airbag (1501) can be deformed and reset.

7. The magnetic flux leakage warning structure for an oil drill pipe according to claim 1, characterized in that: There are two guiding rods (19), and the lifting plate (9) and the magnetic leakage detection vehicle (1) form a vertically sliding structure through the cooperation of the guiding rods (19).

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