Brake control system of automatic mud scraping device

Abstract

The invention provides a brake control system of an automatic mud scraping device. The brake control system comprises a brake module, a speed monitoring module, a stroke monitoring module and a control terminal which is in control connection with the brake module, the speed monitoring module and the stroke monitoring module. The brake module is used for controlling the falling speed of the mud scraping device; the speed monitoring module is used for monitoring the falling speed of the mud scraping device; the stroke monitoring module is used for monitoring the mud scraping distance of the mud scraping device. Through cooperation of the speed sensor, the Hall sensor and the brake module, the falling speed of the mud scraping device is effectively controlled in the mud scraping process, the mud scraping efficiency is improved, the mud scraping safety is guaranteed, and falling of the mud scraping device is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas drilling engineering, and in particular to a brake control system for an automatic mud scraping device. Background Art

[0002] During the drilling process of oil and gas wells, various working conditions such as changing drill tools, short drilling, and well cleaning involve drilling operations. In order to keep the drilling operation safe and the drill floor clean, it is usually necessary to scrape the mud from the drill pipe during the drilling process. At present, scraping the mud from the outer wall of the drill pipe has been achieved. However, due to the lack of technology for scraping the mud from the inner wall of the drill pipe, mud is still all over the drill floor during the drilling process.

[0003] A variety of drill pipe scrapers have been invented at home and abroad. Among the scrapers on the inner wall of the drill pipe, some scrapers fall down in the drill pipe under the action of their own gravity to achieve the purpose of scraping mud. Since the falling speed of the scraper is uncontrollable, it is easy for the scraper to fall directly into the well and become a lost fish.

[0004] Therefore, designing an automatic mud scraper device brake control system that can effectively control the speed of the mud scraper is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide an automatic mud scraping device brake control system, which effectively controls the falling speed of the mud scraping device during the mud scraping process through the cooperation of a speed sensor, a Hall sensor and a brake module, thereby improving the mud scraping efficiency, ensuring the safety of mud scraping, and avoiding the mud scraping device from falling.

[0006] The embodiment of the present invention is achieved as follows:

[0007] The present invention provides a brake control system for an automatic scraper device, comprising a brake module, a speed monitoring module, a stroke monitoring module, and a control terminal connected to the brake module, the speed monitoring module, and the stroke monitoring module; the brake module is used to control the falling speed of the scraper device; the speed monitoring module is used to monitor the falling speed of the scraper device; and the stroke monitoring module is used to monitor the scraping distance of the scraper device.

[0008] Furthermore, the brake module is a leaf spring brake structure.

[0009] Furthermore, the leaf spring brake structure includes a leaf spring supporting outer cylinder, which is fixedly connected to the upper end of the scraper device fixed cylinder, and the side wall of the leaf spring supporting outer cylinder is provided with three leaf spring extension grooves, each of which is provided with a leaf spring leaf, and a transmission screw is rotatably installed in the middle part of the leaf spring supporting outer cylinder, and the transmission screw and the leaf spring supporting outer cylinder are coaxially arranged, and a wedge-shaped slider is threadedly sleeved on the transmission screw, and the rotation of the transmission screw drives the wedge slider to slide up and down on the transmission screw, and the wedge slider drives the leaf spring leaf to deform, and the transmission screw is connected to the driving motor, and a boss is provided on the middle part of the inner side of the leaf spring leaf, and the boss is adapted to the shape of the wedge slider, and limiting shafts are provided at both ends of the leaf spring leaf, and limiting slots are provided at both ends of the leaf spring extension slot, and the limiting shafts are located in the corresponding limiting slots.

[0010] Furthermore, the outer surface of the leaf spring is coated with wear-resistant rubber.

[0011] Furthermore, the driving motor is connected to a battery.

[0012] Furthermore, the speed monitoring module is a speed sensor.

[0013] Furthermore, the stroke detection module includes two support frames arranged opposite to each other, the two support frames are arranged in a V-shape, and the two support frames are rotatably connected to the fixed cylinder of the mud scraper device through bearings at the bottom of the V-shape. The two support frames are rotatably provided with travel wheels at the far bearing ends, and a permanent magnet is installed at an outer edge of the travel wheel. A Hall sensor adapted to the permanent magnet is provided in the middle of the support frame, and the Hall sensor is used to sense the permanent magnet to count the rotation of the travel wheel. A reset spring is provided between the middle parts of the two support frames.

[0014] Furthermore, the control terminal is used to receive data from the speed sensor and the Hall sensor, and control the rotation direction and rotation speed of the drive motor.

[0015] The beneficial effects of the brake control system of an automatic mud scraper device provided by the present invention include:

[0016] 1. The control system of the scraper device of the present invention mainly consists of three parts, namely, a brake module, a speed monitoring module and a stroke monitoring module; the brake module is used to control the falling speed of the scraper device; the speed monitoring module is used to monitor the falling speed of the scraper device; the stroke monitoring module is used to monitor the scraping distance of the scraper device; and the control terminal can control the brake module, the speed monitoring module and the stroke monitoring module according to the setting or actual needs, so that the scraper device can brake or release the brake as needed, thereby improving the scraping efficiency, ensuring the safety of scraping, and avoiding the scraping device from falling.

[0017] 2. The speed sensor can monitor the falling speed of the scraper device. When the falling speed is too fast, the brake module is turned on to slow down the scraper device. When the speed drops slowly, the brake can be released to speed up the falling of the scraper device. At the same time, the brake module can also cooperate with the stroke monitoring module. When the stroke monitoring module detects that the stroke of the scraper device reaches a predetermined distance, the brake module can be started to brake and fix the scraper device. When it is necessary to continue to fall and scrape the mud, the brake module can be released. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the flow of the brake control system in the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the brake module in the present invention;

[0021] Figure 3 It is a structural schematic diagram of the travel monitoring module of the present invention;

[0022] Icons: 11. Leaf spring supporting outer cylinder; 12. Leaf spring extension groove; 13. Leaf spring leaf; 14. Transmission screw; 15. Wedge-shaped slider; 16. Driving motor; 17. Boss; 18. Limiting shaft; 19. Limiting groove; 21. Support frame; 22. Bearing; 23. Travel wheel; 24. Permanent magnet; 25. Hall sensor; 26. Reset spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] like Figure 1-3 As shown: The present invention provides a braking control system for an automatic scraper device, comprising a braking module, a speed monitoring module, a stroke monitoring module, and a control terminal connected to the braking module, the speed monitoring module, and the stroke monitoring module; the braking module is used to control the falling speed of the scraper device; the speed monitoring module is used to monitor the falling speed of the scraper device; the stroke monitoring module is used to monitor the scraping distance of the scraper device.

[0029] The brake module, speed monitoring module and travel monitoring module cooperate with each other under the control of the control terminal to monitor in real time to meet different needs.

[0030] It should be noted that the brake module is a leaf spring brake structure. Of course, the brake module can also be a roller brake, a magnetic brake and other modes.

[0031] Specifically, Figure 2As shown, the leaf spring brake structure includes a leaf spring support outer cylinder 11, which is fixedly connected to the upper end of the scraper device fixed cylinder. The side wall of the leaf spring support outer cylinder 11 is provided with three leaf spring extension grooves 12, each of which is provided with a leaf spring leaf 13. A transmission screw 14 is rotatably installed in the middle of the leaf spring support outer cylinder 11. The transmission screw 14 is coaxially arranged with the leaf spring support outer cylinder 11, and a wedge-shaped slider is threadedly sleeved on the transmission screw 14. 15, the transmission screw 14 rotates to drive the wedge-shaped slider 15 to slide up and down on the transmission screw 14, and the wedge-shaped slider 15 drives the leaf spring 13 to deform. The transmission screw 14 is connected to the driving motor 16. A boss 17 is provided in the middle of the inner side of the leaf spring 13, and the boss 17 is adapted to the shape of the wedge-shaped slider 15. Limiting shafts 18 are provided at both ends of the leaf spring 13, and limiting grooves 19 are provided at both ends of the leaf spring extension groove 12. The limiting shaft 18 is located in the corresponding limiting groove.

[0032] That is, the driving motor 16 drives the transmission screw 14 to rotate, so that the wedge-shaped slider 15 moves up on the transmission screw 14, and the wedge-shaped slider 15 squeezes the boss 17 of the leaf spring 13, so that the leaf spring 13 bulges and deforms, and then protrudes to the outside of the leaf spring support outer cylinder 11, contacts the inner wall of the drill rod, generates friction, realizes braking, and further extends, can realize squeezing and fixing. When the driving motor 16 is reversed, the leaf spring 13 is retracted and the brake is released. The driving motor 16 is a forward and reverse reduction motor.

[0033] The outer surface of the leaf spring 13 is coated with wear-resistant rubber, which increases the friction between the leaf spring 13 and the inner wall of the drill pipe, reduces the wear of the leaf spring 13, and prolongs the service life of the mud scraper device.

[0034] The driving motor 16 is connected to a battery, which is a replaceable rechargeable battery.

[0035] It should be noted that the speed monitoring module is a speed sensor, which can monitor the speed of the movement in real time and send the data to the control module.

[0036] It should be noted that if Figure 3 As shown, the stroke detection module includes two support frames 21 arranged opposite to each other, the two support frames 21 are arranged in a V shape, and the two support frames 21 are rotatably connected to the fixed cylinder of the scraper device through bearings 22 at the bottom of the V shape. The two support frames 21 are rotatably provided with travel wheels 23 at the ends far from the bearings 22, and a permanent magnet 24 is installed at an outer edge of the travel wheel 23. A Hall sensor 25 adapted to the permanent magnet 24 is arranged in the middle of the support frame 21, and the induction of the permanent magnet 24 by the Hall sensor 25 is used to count the rotations of the travel wheel 23. A reset spring 26 is arranged between the middle parts of the two support frames 21.

[0037] The travel wheel 23 contacts the inner wall of the drill pipe and drives the travel wheel 23 to rotate. The Hall sensor 25 records once when the travel wheel 23 rotates one circle. The distance traveled by the mud scraper device is the number of times recorded by the Hall sensor 25 multiplied by the circumference of the travel wheel 23.

[0038] Specifically, the control terminal is used to receive data from the speed sensor and the Hall sensor 25, and control the rotation direction and rotation speed of the drive motor 16. The brake module, speed monitoring module, and travel monitoring module are all integrated into the fixed cylinder of the mud scraper device.

[0039] The control system of the scraper device of the present invention mainly consists of three parts, namely, a brake module, a speed monitoring module and a stroke monitoring module; the brake module is used to control the falling speed of the scraper device; the speed monitoring module is used to monitor the falling speed of the scraper device; the stroke monitoring module is used to monitor the scraping distance of the scraper device; and the control terminal can control the brake module, the speed monitoring module and the stroke monitoring module according to the setting or actual needs, so that the scraper device can brake or release the brake according to the needs, thereby improving the scraping efficiency, ensuring the safety of scraping the mud, and avoiding the scraper device from falling. The speed sensor can monitor the falling speed of the scraper device. When the falling speed is too fast, the brake module is turned on to slow down the scraper device. When the speed drops slowly, the brake can be released to speed up the falling of the scraper device. At the same time, the brake module can also cooperate with the stroke monitoring module. When the stroke monitoring module detects that the stroke of the scraper device reaches a predetermined distance, the brake module can be started to brake and fix the scraper device. When it is necessary to continue to fall and scrape the mud, the brake module can be released.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A brake control system for an automatic mud scraper, characterized in that: It includes a brake module, a speed monitoring module, a travel monitoring module, and a control terminal connected to the brake module, the speed monitoring module, and the travel monitoring module; The brake module is used to control the falling speed of the mud scraper device; The speed monitoring module is used to monitor the falling speed of the scraper device; The travel monitoring module is used to monitor the distance that the mud scraping device scrapes mud.

2. The automatic mud scraping device brake control system according to claim 1, characterized in that: The brake module is a leaf spring brake structure.

3. The automatic mud scraping device brake control system according to claim 2, characterized in that: The leaf spring brake structure comprises a leaf spring support outer cylinder (11), the side wall of the leaf spring support outer cylinder (11) is provided with three leaf spring extension grooves (12), each of the leaf spring extension grooves (12) is provided with a leaf spring leaf (13), a transmission screw (14) is rotatably installed in the middle of the leaf spring support outer cylinder (11), the transmission screw (14) is coaxially arranged with the leaf spring support outer cylinder (11), a wedge-shaped slider (15) is threadedly sleeved on the transmission screw (14), and the rotation of the transmission screw (14) drives the wedge The wedge-shaped slider (15) slides up and down on the transmission screw (14), the wedge-shaped slider (15) drives the leaf spring (13) to deform, the transmission screw (14) is connected to the driving motor (16), a boss (17) is arranged in the middle of the inner side of the leaf spring (13), the boss (17) is adapted to the shape of the wedge-shaped slider (15), limiting shafts (18) are arranged at both ends of the leaf spring (13), limiting grooves (19) are arranged at both ends of the leaf spring extension groove (12), and the limiting shaft (18) is located in the corresponding limiting groove.

4. The automatic mud scraping device brake control system according to claim 3, characterized in that: The outer surface of the leaf spring (13) is coated with wear-resistant rubber.

5. The brake control system of the automatic mud scraping device according to claim 3, characterized in that: The driving motor (16) is connected to a battery and a control terminal.

6. The brake control system of the automatic mud scraper according to claim 3, characterized in that: The speed monitoring module is a speed sensor.

7. The brake control system of the automatic mud scraper according to claim 6, characterized in that: The stroke detection module comprises two support frames (21) arranged opposite to each other, the two support frames (21) are arranged in a V-shape, the two support frames (21) are rotatably connected to a fixed cylinder of a mud scraper device through a bearing (22) at the bottom of the V-shape, a travel wheel (23) is rotatably arranged at the end of the two support frames (21) far from the bearing (22), a permanent magnet (24) is installed at one point on the outer edge of the travel wheel (23), a Hall sensor (25) adapted to the permanent magnet (24) is arranged in the middle of the support frame (21), the Hall sensor (25) senses the permanent magnet (24) to count the rotation of the travel wheel (23), and a reset spring (26) is arranged between the middle parts of the two support frames (21).

8. The brake control system of the automatic mud scraper according to claim 7, characterized in that: The control terminal is used to receive data from a speed sensor and a Hall sensor (25), and to control the rotation direction and rotation speed of the drive motor (16).

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