A drilling fluid liquid level detection alarm device

Abstract

The utility model relates to the technical field of oil drilling exploitation, concretely to a kind of drilling fluid liquid level height detection alarm device, including wellbore, the cavity is equipped in wellbore inside, annular gear disc is fixed in the cavity inside, the movable gear is engagedly connected in the annular gear disc inside, the movable gear front end is equipped with protection box, the antenna is fixed in the protection box top, alarm is fixed in the protection box inside upper surface, ultrasonic liquid level sensor is fixed in the controller left end, laser liquid level sensor is fixed in the ultrasonic liquid level sensor front end, the front box door is slidably connected in the protection box bottom, the rear box door is equipped in the front box door rear portion and the protection box sliding connection;The utility model can make movable gear rotate along annular gear disc by movable gear rotation, to drive connecting block to move along annular gear disc, so that the whole device can detect the drilling fluid of wellbore inside any position, to improve the use range of the device.

Description

Technical Field

[0001] This utility model belongs to the field of oil drilling and extraction technology, specifically a drilling fluid level detection and alarm device. Background Technology

[0002] In oil drilling operations, drilling fluid level is an extremely critical parameter. It relates to many aspects, including downhole pressure balance and wellbore stability. Any abnormality in the fluid level (such as a drop due to well leakage or a rise due to formation fluid intrusion) can easily lead to serious downhole accidents like blowouts and stuck pipe if not detected and addressed promptly, causing significant losses to the drilling project. Therefore, monitoring the drilling fluid level is crucial.

[0003] However, existing detection and alarm devices can only detect one point at a time. Since drilling fluid is not entirely liquid, a single point cannot represent the overall fluid level, resulting in low detection accuracy. Furthermore, existing detection and alarm devices mostly rely on manual operation, leading to low detection efficiency. To address these issues, this invention designs a drilling fluid level detection and alarm device. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a drilling fluid level detection and alarm device, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drilling fluid level detection and alarm device, comprising a wellbore, an internal cavity, a ring-shaped gear disk fixed inside the cavity, a moving gear meshing inside the ring-shaped gear disk, an adapter plate on the top of the moving gear, a positioning rod fixed on the top of the adapter plate, a moving motor rotatably connected to the lower end of the moving gear via a rotating shaft, a positioning plate fixed outside the moving motor, two locking holes on the positioning plate, a sliding block fixed at the bottom of the moving motor, a protective box at the front end of the moving gear, an antenna fixed at the top of the protective box, a power supply fixed on the upper surface inside the protective box, a controller fixed to the left side of the power supply, an alarm fixed at the front end of the controller, an ultrasonic level sensor fixed to the left end of the controller, a laser level sensor fixed at the front end of the ultrasonic level sensor, a front door slidably connected to the bottom of the protective box, and a rear door slidably connected to the protective box at the rear of the front door.

[0006] Preferably, an upper slide plate is fixed to the top of the cavity, and an upper slide rail is provided on the bottom inner side of the upper slide plate. The upper slide rail is slidably connected to the positioning rod. A lower slide plate is fixed to the bottom of the cavity, and a lower slide rail is provided on the top inner side of the lower slide plate. The lower slide rail is slidably connected to the lower slide block.

[0007] Preferably, an adapter plate is fixed to the bottom of the positioning rod, and a connecting plate is fixedly connected to the top of the moving gear via a rotating shaft. Two adapter rods are slidably connected to the connecting plate, and an adapter spring is provided on the outside of each adapter rod. The two adapter springs are fixedly connected to the adapter plate on their tops.

[0008] Preferably, the moving gear is fixed with positioning bearings at both the upper and lower ends, each positioning bearing has a positioning block fixed at the front end of its outer ring, two positioning blocks have a connecting block fixed at the front end, the connecting block has a moving rod fixed at the front end, the moving rod is fixedly connected to the protective box, the bottom of the lower positioning block has a locking rod fixed, the locking rod can be tightly attached to the locking hole at its bottom, and the positioning plate is tightly attached to the lower sliding plate.

[0009] Preferably, a fixing plate is fixed to the right end of the protective box, and a secondary gear for the box door is provided on the top of the fixing plate. The secondary gear for the box door is fixedly connected to the front box door at its bottom via a rotating shaft. The secondary gear for the box door is meshed with a main gear for the box door. The bottom of the main gear for the box door is rotatably connected to the rear box door via a rotating shaft. A box door motor is rotatably connected to the top of the main gear for the box door, and the box door motor is fixedly connected to the protective box.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention uses a movable motor to drive a movable gear to rotate, which in turn rotates along a ring gear disk, thereby moving the connecting block along the ring gear disk. This allows the entire device to detect any position of the drilling fluid inside the wellbore, thus increasing the device's range of applications. At the same time, the device can move the protective box by extending and retracting the movable rod, ensuring detection accuracy and improving detection efficiency.

[0012] This invention utilizes an adapter spring and an adapter rod to move the adapter plate away from the connecting plate, thereby ensuring the positioning rod is in close contact with the upper slide rail. This guarantees the stability of the connecting block, the protective box, and the testing process. Furthermore, the positioning rod allows for easy disassembly of the connecting block by moving up and down. The lower slider positions the moving motor, ensuring its movement along the annular gear disc while preventing it from rotating on its own. This further enhances the stability of the entire device during testing, thus guaranteeing the testing results.

[0013] This invention uses an alarm to detect the drilling fluid level, and combines a laser level sensor and an ultrasonic level sensor to compare the two, ensuring accuracy. The front and rear doors ensure the protective enclosure is sealed, allowing the doors to be opened only during testing, thus protecting the laser and ultrasonic level sensors and extending their lifespan. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the front of the present invention;

[0018] Figure 3 This is a schematic diagram of the interior of the cavity of this utility model;

[0019] Figure 4 This is a schematic diagram of the top of the positioning plate of this utility model;

[0020] Figure 5 This is a schematic diagram of the bottom of the protective box of this utility model;

[0021] Figure 6 This is a schematic diagram of the top of the fixing plate of this utility model;

[0022] Figure 7 This is a schematic diagram of the interior of the protective box of this utility model;

[0023] Figure 8 This is a schematic diagram of the right end of the positioning plate of this utility model;

[0024] Figure 9 This is a schematic diagram of the inner side of the annular toothed disc of this utility model.

[0025] In the diagram: 1-Well shaft; 2-Annular geared disc; 3-Protective box; 4-Positioning plate; 5-Positioning rod; 6-Connecting block; 7-Controller; 101-Lower slide rail; 102-Upper slide rail; 103-Cavity; 104-Lower slide plate; 105-Upper slide plate; 201-Moving gear; 301-Antenna; 302-Front door; 303-Rear door; 304-Fixing plate; 305-Door motor; 306-Door main gear ; 307-Door auxiliary gear; 401-Locking rod; 402-Locking hole; 501-Adapter plate; 502-Adapter rod; 503-Adapter spring; 504-Connecting plate; 601-Positioning bearing; 602-Positioning block; 603-Moving rod; 604-Moving motor; 605-Lower slider; 701-Power supply; 702-Alarm; 703-Laser level sensor; 704-Ultrasonic level sensor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Example 1, by Figures 1-4 , Figures 7-8The present invention includes a well shaft 1, which is made of concrete. The well shaft 1 has an internal cavity 103 for fixing the annular gear disc 2. The annular gear disc 2, made of alloy material, provides a moving path for the moving gear 201. The moving gear 201 is meshed inside the annular gear disc 2. The moving gear 201, by rotating, can drive the connecting block 6 to move along the annular gear disc 2. An adapter plate 501, made of alloy material, is provided on the top of the moving gear 201 for positioning the positioning rod 5. The positioning rod is fixed on the top of the adapter plate 501. 5. The positioning rod 5 is made of alloy material. The positioning rod 5 can position the connecting block 6 by moving, thereby facilitating the disassembly of the connecting block 6. The lower end of the moving gear 201 is rotatably connected to the moving motor 604 via a rotating shaft. The moving motor 604 can drive the moving gear 201 to rotate. A positioning plate 4 is fixed to the outside of the moving motor 604. The positioning plate 4 is made of alloy material. The positioning plate 4 is used to position the moving motor 604. The positioning plate 4 is provided with two locking holes 402. The locking holes 402 are used to position the locking rod 401. A sliding block 605 is fixed to the bottom of the moving motor 604. The sliding block 605 is made of alloy material. The sliding block 605 is used to position the moving gear 201. A motor 604 is provided to ensure that the moving motor 604 moves along the annular gear 2 while preventing the moving motor 604 from rotating on its own. A protective box 3, made of alloy material, is provided at the front end of the moving gear 201. The protective box 3 is used to position the controller 7. An antenna 301 is fixed to the top of the protective box 3 for communication with external devices. A power supply 701 is fixed to the upper surface inside the protective box 3, providing the necessary energy for the entire device. A controller 7 is fixed to the left side of the power supply 701, controlling the entire device. An alarm 702 is fixed to the front end of the controller 7 for alarm purposes. A super-powered device is fixed to the left end of the controller 7. An ultrasonic level sensor 704 is provided, with a laser level sensor 703 fixed to its front end. The laser level sensor 703 and the ultrasonic level sensor 704 are used to detect the drilling fluid level. A comparison is established between the two sensors to ensure detection accuracy. A front door 302, made of alloy material, is slidably connected to the bottom of the protective housing 3. A rear door 303, also made of alloy material, is slidably connected to the rear of the front door 302. The cooperation of the front and rear doors ensures the sealing of the protective housing 3, thereby guaranteeing the safety of the laser level sensor 703 and the ultrasonic level sensor 704.

[0028] Example 2, based on Example 1, combined with... Figures 5-6 , Figure 9As shown, an upper sliding plate 105 is fixed to the top of the cavity 103. The upper sliding plate 105 is made of alloy material and is used to position the upper slide rail 102. The upper slide rail 102 is provided on the bottom inner side of the upper sliding plate 105. The upper slide rail 102 provides a moving path for the positioning rod 5. The upper slide rail 102 is slidably connected to the positioning rod 5. A lower sliding plate 104 is fixed to the bottom of the cavity 103. The lower sliding plate 104 is made of alloy material and is used to position the lower slide rail 101. The lower slide rail 101 is provided on the top inner side of the lower sliding plate 104. The lower slide rail 101 provides a moving path for the lower slider 605. The lower slide rail 101 is slidably connected to the lower slider 605. An adapter plate 501, made of alloy material, is fixed to the bottom of the positioning rod 5. The adapter plate 501 is used to position the positioning rod 5. A connecting plate 504, also made of alloy material, is fixedly connected to the top of the moving gear 201 via a rotating shaft. The connecting plate 504 is used to position the adapter rod 502. Two adapter rods 502, also made of alloy material, are slidably connected to the connecting plate 504. Each adapter rod 502 is equipped with an adapter spring 503, which is elastic, causing the adapter plate 501 to move away from the connecting plate 504, thereby allowing the positioning rod 5 to... The two adapter springs 503 are fixedly connected to the adapter plate 501 on top of the upper slide rail 102. Positioning bearings 601 are fixed at both ends of the moving gear 201. The positioning bearings 601 are used to position the positioning blocks 602. A positioning block 602 is fixed to the front end of the outer ring of each positioning bearing 601. The positioning blocks 602 are made of alloy material and are used to position the connecting block 6. A connecting block 6, also made of alloy material, is fixed to the front end of the two positioning blocks 602. The connecting block 6 is used to position the moving rod 603. A moving rod 603 is fixed to the front end of the connecting block 6. The moving rod 603 is telescopic, thereby driving the protective box 3 to move. To ensure detection accuracy, the front end of the moving rod 603 is fixedly connected to the protective box 3. A locking rod 401 is fixed to the bottom of the lower positioning block 602. The locking rod 401 is retractable and can be engaged with the locking hole 402 to lock the positioning block 602. The locking rod 401 can be tightly fitted to the locking hole 402 at its bottom. The positioning plate 4 is tightly fitted to the lower sliding plate 104. A fixing plate 304 is fixed to the right end of the protective box 3. The fixing plate 304 is made of alloy material and is used to position the front door 302 and the rear door 303. A door auxiliary gear 307 is provided at the top of the fixing plate 304, which can drive the front door 302 to rotate.The auxiliary gear 307 of the housing door is fixedly connected to the front housing door 302 at its bottom via a rotating shaft. The auxiliary gear 307 is meshed with the main gear 306 of the housing door. The main gear 306 can drive the rear housing door 303 to rotate while simultaneously driving the auxiliary gear 307 to rotate. The bottom of the main gear 306 is rotatably connected to the rear housing door 303 via a rotating shaft. A housing door motor 305 is rotatably connected to the top of the main gear 306. The housing door motor 305 can drive the main gear 306 to rotate, and the housing door motor 305 is fixedly connected to the protective housing 3.

[0029] When using this device, the operator excavates the cavity 103 inside the well shaft 1, fixes the upper sliding plate 105 to the top of the cavity 103, and fixes the lower sliding plate 104 to the bottom of the cavity 103. The annular gear disc 2 is then fixed to the inner wall of the cavity 103. The operator then pulls the adapter plate 501, causing the positioning rod 5 to move. Simultaneously, the operator pushes the connecting block 6, causing the moving gear 201 to mesh with the annular gear disc 2. The lower sliding plate 605 then engages with the lower sliding rail 101. The operator then releases the adapter plate 501. Due to the action of the adapter rod 502 and the adapter spring 503, the positioning rod 5 can move, thereby allowing... The positioning rod 5 is in close contact with the top of the upper slide rail 102, and the positioning plate 4 is in close contact with the lower slide plate 104. At this time, the controller 7 controls the laser level sensor 703 and the ultrasonic level sensor 704 to work simultaneously, thereby monitoring the drilling fluid level. To further ensure the accuracy of the detection, the controller 7 controls the door motor 305 to work, thereby driving the main gear 306 of the door to rotate, which in turn drives the secondary gear 307 of the door to rotate, thereby driving the front door 302 and the rear door 303 to rotate, thereby closing the protective box 3. This prevents dust inside the wellbore 1 from entering the protective box 3 during the movement of the protective box 3 and affecting the laser level sensor. Based on the detection results of the device 703 and the ultrasonic liquid level sensor 704, the controller 7 further controls the extension and retraction of the moving rod 603, thereby moving the protective box 3 to the next detection point. The controller 7 then controls the opening of the front door 302 and the rear door 303 to begin detection at this point. After detection at this point is completed, the controller 7 controls the closing of the front door 302 and the rear door 303 and controls the operation of the moving motor 604, causing the moving gear 201 to rotate around the annular gear disk 2, thereby moving the connecting block 6 along the annular gear disk 2. This allows the entire device to detect the liquid level height at any location, ensuring detection accuracy. When the detected liquid level height exceeds... When the set value is reached, the alarm 702 sounds, and at the same time, the controller 7 transmits the signal to the ground equipment through the antenna 301, thereby ensuring the accuracy and timeliness of the alarm. After the detection is completed, the controller 7 controls the locking rod 401 to retract, so that the connecting block 6 can rotate around the moving gear 201. At this time, the controller 7 controls the moving motor 604 to work, so that the connecting block 6 rotates ninety degrees around the moving gear 201. At this time, the controller 7 controls the locking rod 401 to extend, so that the locking rod 401 is locked with the second locking hole 402, thereby making the protective box 3 close to the cavity 103, thus ensuring the safety of the protective box 3 and facilitating drilling.

[0030] The working process of this utility model is as follows: When using this device, the operator excavates the cavity 103 inside the well shaft 1, fixes the upper sliding plate 105 at the top of the cavity 103, and fixes the lower sliding plate 104 at the bottom of the cavity 103. The annular gear disc 2 is then fixed to the inner wall of the cavity 103. At this time, the operator pulls the adapter plate 501, causing the positioning rod 5 to move. The operator then pushes the connecting block 6 to engage the moving gear 201 with the annular gear disc 2. The lower sliding plate 605 then engages with the lower sliding rail 101. The operator then releases the adapter plate 501. Due to the action of the adapter rod 502 and the adapter spring 503, the positioning rod 5 is positioned... The positioning rod 5 moves, causing it to press against the top of the upper slide rail 102, and simultaneously causing the positioning plate 4 to press against the lower slide plate 104. At this time, the controller 7 controls the laser level sensor 703 and the ultrasonic level sensor 704 to work simultaneously, thereby monitoring the drilling fluid level. To further ensure the accuracy of the detection, the controller 7 controls the door motor 305 to work, thereby driving the main gear 306 of the door to rotate, which in turn drives the secondary gear 307 of the door to rotate, thereby driving the front door 302 and the rear door 303 to rotate, thus closing the protective box 3. This prevents dust inside the wellbore 1 from entering the protective box 3 during the movement of the protective box 3 and affecting its operation. Based on the detection results of the laser level sensor 703 and the ultrasonic level sensor 704, the controller 7 further controls the extension and retraction of the moving rod 603, thereby moving the protective box 3 to the next detection point. The controller 7 then controls the opening of the front door 302 and the rear door 303 to begin detection at this point. After detection at this point is completed, the controller 7 controls the closing of the front door 302 and the rear door 303 and controls the operation of the moving motor 604, causing the moving gear 201 to rotate around the annular gear disk 2, thereby moving the connecting block 6 along the annular gear disk 2. This allows the entire device to detect the liquid level height at any location, ensuring detection accuracy. When the liquid level is detected... When the altitude exceeds the set value, the alarm 702 sounds an alarm, and the controller 7 transmits the signal to the ground equipment through the antenna 301, thereby ensuring the accuracy and timeliness of the alarm. After the detection is completed, the controller 7 controls the locking rod 401 to retract, so that the connecting block 6 can rotate around the moving gear 201. At this time, the controller 7 controls the moving motor 604 to work, so that the connecting block 6 rotates ninety degrees around the moving gear 201. At this time, the controller 7 controls the locking rod 401 to extend, so that the locking rod 401 is locked with the second locking hole 402, thereby making the protective box 3 close to the cavity 103, thus ensuring the safety of the protective box 3 and facilitating drilling.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling fluid level detection and alarm device, characterized in that: The system includes a well shaft (1), which has a cavity (103) inside. A ring-shaped gear disc (2) is fixed inside the cavity (103). A moving gear (201) is meshed inside the ring-shaped gear disc (2). An adapter plate (501) is provided on the top of the moving gear (201), and a positioning rod (5) is fixed on the top of the adapter plate (501). A moving motor (604) is rotatably connected to the lower end of the moving gear (201) via a rotating shaft. A positioning plate (4) is fixed outside the moving motor (604), and two locking holes (402) are provided on the positioning plate (4). A sliding block (605) is fixed at the bottom of the moving motor (604). A protective box (3) is provided at the front end of the gear (201). An antenna (301) is fixed on the top of the protective box (3). A power supply (701) is fixed on the upper surface inside the protective box (3). A controller (7) is fixed on the left side of the power supply (701). An alarm (702) is fixed at the front end of the controller (7). An ultrasonic liquid level sensor (704) is fixed at the left end of the controller (7). A laser liquid level sensor (703) is fixed at the front end of the ultrasonic liquid level sensor (704). A front door (302) is slidably connected to the bottom of the protective box (3). A rear door (303) is provided at the rear of the front door (302) and slidably connected to the protective box (3).

2. The drilling fluid level detection and alarm device according to claim 1, characterized in that: The top of the cavity (103) is fixed with an upper slide plate (105), and the bottom of the inner side of the upper slide plate (105) is provided with an upper slide rail (102). The upper slide rail (102) is slidably connected to the positioning rod (5). The bottom of the cavity (103) is fixed with a lower slide plate (104), and the top of the inner side of the lower slide plate (104) is provided with a lower slide rail (101). The lower slide rail (101) is slidably connected to the lower slide block (605).

3. The drilling fluid level detection and alarm device according to claim 2, characterized in that: The bottom of the positioning rod (5) is fixed with an adapter plate (501), and the top of the moving gear (201) is fixedly connected with a connecting plate (504) via a rotating shaft. Two adapter rods (502) are slidably connected on the connecting plate (504). Each adapter rod (502) is provided with an adapter spring (503) on its outside. The two adapter springs (503) are fixedly connected to the adapter plate (501) on its top.

4. The drilling fluid level detection and alarm device according to claim 3, characterized in that: The moving gear (201) is fixed with positioning bearings (601) at both ends. Each positioning bearing (601) has a positioning block (602) fixed at the front end of its outer ring. The two positioning blocks (602) have a connecting block (6) fixed at the front end. The connecting block (6) has a moving rod (603) fixed at the front end. The front end of the moving rod (603) is fixedly connected to the protective box (3). The bottom of the lower positioning block (602) has a locking rod (401) fixed. The locking rod (401) can be tightly attached to the locking hole (402) at its bottom. The positioning plate (4) is tightly attached to the sliding plate (104).

5. The drilling fluid level detection and alarm device according to claim 4, characterized in that: The protective box (3) is fixed with a fixing plate (304) at the right end. The top of the fixing plate (304) is provided with a door auxiliary gear (307). The door auxiliary gear (307) is fixedly connected to the front door (302) at its bottom via a rotating shaft. The door auxiliary gear (307) is meshed with a door main gear (306). The bottom of the door main gear (306) is rotatably connected to the rear door (303) via a rotating shaft. The top of the door main gear (306) is rotatably connected to a door motor (305). The door motor (305) is fixedly connected to the protective box (3).

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