An installation device for a shaft diameter sensor

Abstract

The object of the present invention is to provide a shaft diameter sensor mounting device to achieve the connection between the drum shaft and the sensor on an unconventional drilling rig, so as to solve the problem of depth measurement work on the unconventional drilling rig; to achieve the above object, the solution of the present invention is to provide a shaft diameter sensor mounting device, including: a sensor, a connecting device and a fixing device. The sensor is divided into a rotor part and a stator part. The rotor part is connected to the drum shaft on the drilling rig through the connecting device and rotates with the drum shaft. The stator part is kept in a fixed state through the fixing device. The rotor part includes a toothed disc. The stator part includes a sensor housing and a detection head. The detection head and the toothed disc are arranged in the sensor housing. A plurality of teeth are arranged on the toothed disc along the circumferential direction. When the toothed disc rotates, the teeth alternately pass through the detection head, and the detection head outputs a pulse signal.

Description

Technical Field

[0001] The present invention relates to the field of drilling surveys, and particularly to a device for installing a shaft diameter sensor. Background Art

[0002] The comprehensive logging depth sensor (winch sensor) is a combined structure of a stator and a rotor, and the signal is collected and analyzed in an optoelectronic manner. On a conventional drilling rig, there is a winch drum device. The drum rotates under the action of an external force, which can be electric power or diesel mechanical power. There is a shaft on the drum for installing the depth sensor. The rotor of the depth sensor is screwed onto the drum shaft. When the drum rotates, the rotor of the depth sensor will rotate accordingly, and thus the depth is calculated by collecting the optoelectronic signal. Without the drum shaft, the depth sensor cannot rotate under the action of the external force and cannot collect the signal. Therefore, the drum shaft is the basic condition and absolute element for the depth sensor to work. However, if the drum shaft is just a laterally protruding steel bar without threading for the logging to screw in and connect the sensor, and at the same time, there is no welding or threading hole, then in this case, the depth sensor cannot be installed and the depth measurement cannot be carried out. Although there are other methods for depth measurement, including laser, acoustic wave, scroll wire displacement, and air brake methods, etc., these methods are affected by many factors and cannot be accurately applied. Therefore, it is necessary to take the winch drum shaft as the solution direction to achieve the conventional installation method under unconventional conditions.

[0003] Generally speaking, in the case of lacking the installation conditions for the depth sensor, there are the following restrictive factors in many aspects:

[0004] (1) Laser ranging. It is not suitable for application in a vibrating environment, and the failure frequency is high in rainy seasons and humid and hot environments, and it cannot meet the accurate requirements for depth measurement;

[0005] (2) Ultrasonic ranging. The measurement error is large, and it is affected by many external interference factors and is not suitable for depth measurement;

[0006] (3) Scroll wire displacement method. The measured displacement distance is short, the installation and application conditions are demanding, and the mechanical failure rate is high;

[0007] (4) Air brake method. The electrical requirements are high, the cost performance is low, and it does not meet the performance requirements for on-site explosion protection.

[0008] (5) Welding drum shaft fixing method. Limited by the conditions of the drilling rig equipment, it cannot be adaptively welded to the depth sensor, and it is not convenient for replacement and maintenance;

[0009] (6) Gear belt drive method. The gear belt drive requires sufficient space, and the on-site drum shaft does not have this condition;

[0010] (7) Signal cross-connection method: Due to the influence of signal sharing interference, correct signal acquisition cannot be ensured.

[0011] In view of the above-mentioned unfavorable factors, it is necessary to innovatively design and invent a new type of shaft diameter sensor installation device that can adapt to the requirements of all-weather construction conditions.

[0012] CN205908289U relates to a drilling depth coding sensor, comprising a plug, a sealed fixed top seat, a depth sensor housing, a conversion joint, a rotating spindle, a rotating bearing, a counting proximity switch and a counting separation blade: the sealed fixed top seat is mounted on the upper part of the depth sensor housing; the plug is mounted on the upper part of the sealed fixed top seat; the rotating spindle is mounted inside the depth sensor housing and sealed by a sealing device, and the rotating spindle is connected to the rotating shaft of the drilling winch through a rotating bearing; a counting proximity switch is arranged inside the depth sensor housing, and a counting separation blade is arranged on the rotating spindle, but this design is not suitable for the drum shaft on an unconventional drilling rig, and there is no chisel for logging to be screwed into and connected to the sensor.

[0013] Therefore, it is a technical problem to be solved urgently to provide a shaft diameter sensor installation device for the drilling survey field. Summary of the invention

[0014] The purpose of the present invention is to provide a shaft diameter sensor installation device to achieve the connection between the drum shaft and the sensor on an unconventional drilling rig, so as to solve the problem of depth measurement on the unconventional drilling rig.

[0015] To achieve the above-mentioned purpose, the solution of the present invention is to provide a shaft diameter sensor installation device, including: a sensor, a connecting device and a fixing device, the sensor is divided into a rotor part and a stator part, the rotor part is connected to the drum shaft on the drilling rig through the connecting device and rotates with the drum shaft, the stator part is kept in a fixed state by the fixing device, the rotor part includes a gear disk, the stator part includes a sensor housing and a detection head, the detection head and the gear disk are arranged in the sensor housing, a plurality of teeth are provided on the gear disk along the circumferential direction, when the gear disk rotates, the teeth alternately pass through the detection head, and the detection head outputs a pulse signal; preferably, 12 teeth are evenly distributed on the gear disk along the circumferential direction.

[0016] Furthermore, the rotor part includes a bearing and a middle tube, the bearing is sleeved inside the sensor housing and rotatably connected, the bearing and the middle tube are fixedly connected, the middle tube and the connecting device are fixedly connected, and the gear disk is sleeved outside the middle tube and fixed in the center; preferably, the bearing and the middle tube are fixed by a bearing clamp, and external threads are provided on both sides of the middle tube for connecting with the connecting device.

[0017] Further, the connecting device includes: a hexagonal cap and a pipe clamp device. The hexagonal cap connects the middle pipe to the roller shaft, and the pipe clamp device is respectively connected to the hexagonal cap and the roller shaft.

[0018] Further, the side of the hexagonal cap has a total of 6 prism faces, and each prism face is provided with n threaded holes, where n is an integer greater than or equal to 2. The middle of the hexagonal cap is hollowed out, and the roller shaft extends into the middle of the hexagonal cap. A screw is screwed into the threaded hole, and the head of the screw abuts against the roller shaft to fixedly connect the roller shaft and the hexagonal cap. One side of the hexagonal cap is provided with internal threads for mating connection with the external threads of the middle pipe.

[0019] Further, the pipe clamp device includes a pipe clamp and a pipe clamp holder. The pipe clamp holder includes: a bottom support, an outer pipe, an inner rod, and a sliding sleeve. The bottom support is fixedly connected to the side of the hexagonal cap, the outer pipe is fixedly connected to the bottom support, the inner rod passes through the outer pipe, a stop pad is provided on one side of the inner rod, a chute penetrating the inner rod is provided on the other side of the inner rod, the middle of the sliding sleeve is hollowed out, the sliding sleeve is sleeved on the inner rod, a through hole is provided in the upper part of the sliding sleeve, and an inner rod is provided in the through hole. The inner rod passes through the through hole and the chute to limit the displacement of the sliding sleeve; an arc groove is provided in the lower part of the sliding sleeve, and the arc groove is connected to the pipe clamp.

[0020] Further, the pipe clamp is of an openable and closable type, is buckled on the roller shaft and fastened with a butterfly bolt. Support columns are provided on the outer wall of the pipe clamp, fixing holes are provided on the support columns, the support columns are sleeved inside the lower part of the sliding sleeve, and fixing rods are provided in the fixing holes to penetrate through the fixing holes and the arc groove.

[0021] Further, a detection element is provided inside the sensor housing, and a signal line outlet is provided at the bottom of the sensor housing. The data of the detection element is transmitted through a signal line inside the signal line outlet.

[0022] Further, the fixing device includes: a cross support device and a fastening belt. The cross support device is provided on both sides of the sensor housing, and the fastening belt is provided at the bottom of the sensor housing.

[0023] Further, the cross support device includes 2 threaded pipes with internal threads respectively provided on both sides of the sensor housing. A screw rod is provided inside the threaded pipe, and the screw rod can abut against surrounding objects to play a role in fixing the stator part.

[0024] Further, through holes are provided on the fastening belt, and a rope-like object passes through the through holes. The rope-like object pulls the fastening belt to surrounding fixed objects to play a role in fixing the sensor housing.

[0025] The present invention has the following performances and advantages:

[0026] (1) It avoids the influence of vibration environmental conditions that may be suffered by using laser ranging, and meets the precise requirements of depth measurement;

[0027] (2) It avoids the disadvantages of large measurement error of ultrasonic ranging, being affected by many external interference factors, and being unsuitable for depth measurement.

[0028] (3) It eliminates the disadvantages of short displacement distance measured by the scroll wire drawing displacement method, high requirements for installation and application conditions, and high mechanical failure rate.

[0029] (4) It avoids the disadvantages of high electrical performance requirements, low cost performance, and non - compliance with on - site explosion - proof performance requirements of the air braking method.

[0030] (5) It abandons the fixed method of welding the drum shaft and is no longer restricted by the conditions of the drilling rig equipment.

[0031] (6) It overcomes the limitation that the gear belt drive method requires sufficient space for transmission, while the on - site drum shaft does not have such conditions.

[0032] (7) It does not need to adopt the signal cross - connection method, avoids being affected by signal sharing interference, and ensures correct signal acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of an installation device for a shaft diameter sensor provided by the present invention;

[0034] Figure 2 It is a schematic diagram of a gear disk provided by the present invention;

[0035] Figure 3 It is a schematic diagram of the rotor part provided by the present invention;

[0036] Figure 4 It is a schematic diagram of a pipe clamp device provided by the present invention;

[0037] As shown in the figure, 1 - drum shaft, 2 - pipe clamp device, 3 - hexagon cap, 4 - sensor housing, 5 - cross - brace device, 6 - signal line outlet, 7 - fastening band, 8 - gear disk, 9 - detection head, 10 - middle pipe, 11 - bearing, 12 - pipe clamp frame, 13 - outer pipe, 14 - sliding sleeve, 15 - inner rod, 16 - bottom brace, 17 - support column, 18 - wing bolt, 19 - pipe clamp. DETAILED DESCRIPTION OF THE INVENTION

[0038] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention.

[0039] As Figures 1 - 3As shown in the figure, a shaft diameter sensor mounting device includes: a sensor, a connecting device, and a fixing device. The sensor is divided into a rotor part and a stator part. The rotor part is connected to the drum shaft 1 on the drill through the connecting device and rotates with the drum shaft 1. The stator part is kept in a fixed state through the fixing device. The rotor part includes a toothed disc 8, a bearing 11, and a middle tube 10. The bearing 11 is sleeved inside the sensor housing 4 and is rotatably connected. The bearing 11 is fixedly connected to the middle tube 10. The middle tube 10 is fixedly connected to the connecting device. The toothed disc 8 is sleeved outside the middle tube 10 and is fixed in the middle. The bearing 11 and the middle tube 10 are fixed by the bearing 11 clamp. Both sides of the middle tube 10 are provided with external threads for connecting to the connecting device. The stator part includes a sensor housing 4 and a detection head 9. The detection head 9 and the toothed disc 8 are arranged inside the sensor housing 4. The toothed disc 8 is provided with 12 evenly distributed teeth along the circumferential direction. The detection head 9 is fixed to the sensor housing 4. There are a total of 2 detection heads 9 and the distance between them is equal to the distance between teeth. When the toothed disc 8 rotates, the teeth alternately pass through the detection head 9, and the detection head 9 outputs a pulse signal.

[0040] As Figure 1 and Figure 4 shown in the figure, the connecting device includes: a hexagonal cap 3 and a pipe clamp device 2. The hexagonal cap 3 connects the middle tube 10 to the drum shaft 1. The pipe clamp device 2 is respectively connected to the hexagonal cap 3 and the drum shaft 1. The side of the hexagonal cap 3 has a total of 6 prism faces, and each prism face is provided with 2 threaded holes. The middle of the hexagonal cap 3 is hollowed out. The drum shaft 1 extends into the middle of the hexagonal cap 3. A screw is screwed into the threaded hole, and the head of the screw abuts against the drum shaft 1 to fixedly connect the drum shaft 1 and the hexagonal cap 3. One side of the hexagonal cap 3 is provided with internal threads for mating connection with the external threads of the middle tube 10.

[0041] The pipe clamp device 2 includes a pipe clamp 19 and a pipe clamp holder 12. The pipe clamp holder 12 includes: a bottom support 16, an outer tube 13, an inner rod 15, and a sliding sleeve 14. The bottom support 16 is fixedly connected to the side of the hexagonal cap 3. The outer tube 13 is fixedly connected to the bottom support 16. The inner rod 15 passes through the outer tube 13. A stop pad is provided on one side of the inner rod 15. A chute penetrating the inner rod 15 is provided on the other side of the inner rod 15. The middle of the sliding sleeve 14 is hollowed out. The sliding sleeve 14 is sleeved on the inner rod 15. A through hole is provided in the upper part of the sliding sleeve 14. An inner rod is provided in the through hole. The inner rod passes through the through hole and the chute to limit the displacement of the sliding sleeve 14. An arc groove is provided in the lower part of the sliding sleeve 14. The arc groove is connected to the pipe clamp 19. The pipe clamp 19 is of an openable type, buckled on the drum shaft 1 and fastened with a wing bolt 18. A support column 17 is provided on the outer wall of the pipe clamp 19. A fixing hole is provided in the support column 17. The support column 17 is sleeved inside the lower part of the sliding sleeve 14. A fixing rod is provided in the fixing hole to penetrate through the fixing hole and the arc groove.

[0042] As shown Figure 1 In the interior of the sensor housing 4, a detecting element is provided. At the bottom of the sensor housing 4, a signal line outlet 6 is provided, and data of the detecting element is transmitted through a signal line within the signal line outlet 6. The fixing device includes: a cross brace device 5 and a fastening belt 7. The cross brace device 5 is disposed on both sides of the sensor housing 4, and the fastening belt 7 is disposed at the bottom of the sensor housing 4. The cross brace device 5 includes two threaded pipes with internal threads respectively disposed on both sides of the sensor housing 4. A lead screw is provided within the threaded pipe, and the lead screw can abut against surrounding objects, serving to fix the stator part and at the same time serving to tighten the connection between the fastening belt 7 and the sensor housing 4. Through holes are formed in the fastening belt 7, and a rope-like object passes through the through holes. The rope-like object pulls the fastening belt 7 to surrounding fixed objects, serving to fix the sensor housing 4.

[0043] Specific working process: Snap the pipe clamp 19 onto the roller shaft 1. Insert the hexagonal nut 3 outside the roller shaft 1, and screw a screw rod into the threaded hole to clamp the roller shaft 1. After adjusting the pipe clamp 19 to a suitable position, fasten it with the wing bolt 18. Insert a fixing rod into the fixing hole on the support column 17, and insert an inner rod into the through hole to connect the pipe clamp 19 and the pipe clamp holder 12. Rotate the lead screw within the threaded pipe to abut against surrounding objects. A rope-like object passes through the through hole of the fastening belt 7, and the rope-like object pulls the fastening belt 7 to surrounding fixed objects to complete the installation.

[0044] The hexagonal nut 3 and the middle pipe 10 of the present invention are designed to have the same diameter. Screw the hexagonal nut 3 onto the middle pipe 10 to form an integral body, and then sleeved onto the roller shaft 1. Screw an internal hexagonal pointed screw rod into the threaded hole of the hexagonal nut 3 to abut against the roller shaft 1 to achieve integral sleeving and fixation. The pipe clamp holder 12 welded on the hexagonal nut 3 supports the pipe clamp 19 to clamp the roller shaft 1, realizing sleeving and fixation again. The lead screw in the cross brace device 5 is screwed and abutted to fix the sensor housing 4. At the same time, the fastening belt 7 serves as an auxiliary fastener to achieve secondary fastening. The whole set of devices is screwed, sleeved and fastened, which is convenient and practical, has installation flexibility and wide applicability.

[0045] Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

Claims

1. An installation device for a shaft diameter sensor, characterized in that, Comprising: A sensor, a connecting device and a fixing device. The sensor is divided into a rotor part and a stator part. The rotor part is connected to the drum shaft (1) on the drilling rig through the connecting device and rotates following the drum shaft (1). The stator part is kept in a fixed state through the fixing device. The rotor part includes a toothed disc (8). The stator part includes a sensor housing (4) and a detection head (9). The detection head (9) and the toothed disc (8) are arranged inside the sensor housing (4). A number of teeth are provided on the toothed disc (8) along the circumferential direction. When the toothed disc (8) rotates, the teeth alternately pass through the detection head (9) one by one, and the detection head (9) outputs a pulse signal. The rotor part includes a bearing (11) and a middle pipe (10). The bearing (11) is sleeved inside the sensor housing (4) and is rotatably connected. The bearing (11) and the middle pipe (10) are fixedly connected. The middle pipe (10) and the connecting device are fixedly connected. The toothed disc (8) is sleeved outside the middle pipe (10). The connecting device includes: a hexagonal cap (3) and a pipe clamp device (2). The hexagonal cap (3) connects the middle pipe (10) and the drum shaft (1). The pipe clamp device (2) is respectively connected to the hexagonal cap (3) and the drum shaft (1). The side of the hexagonal cap (3) has a total of 6 prism faces, and each prism face is provided with n threaded holes, where n is an integer greater than or equal to 2. The middle of the hexagonal cap (3) is hollowed out. The drum shaft (1) extends into the middle of the hexagonal cap (3). A screw is screwed into the threaded hole, and the head of the screw abuts against the drum shaft (1) to fixedly connect the drum shaft (1) and the hexagonal cap (3). One side of the hexagonal cap (3) is provided with internal threads for mating connection with the external threads of the middle pipe (10). The pipe clamp device (2) includes a pipe clamp (19) and a pipe clamp frame (12). The pipe clamp frame (12) includes: a bottom support (16), an outer pipe (13), an inner rod (15), and a sliding sleeve (14). The bottom support (16) is fixedly connected to the side of the hexagonal cap (3). The outer pipe (13) is fixedly connected to the bottom support (16). The inner rod (15) passes through the outer pipe (13). A stop pad is provided on one side of the inner rod (15). A chute penetrating the inner rod (15) is provided on the other side of the inner rod (15). The middle of the sliding sleeve (14) is hollowed out. The sliding sleeve (14) is sleeved on the inner rod (15). A through hole is provided in the upper part of the sliding sleeve (14). An inner rod is provided in the through hole. The inner rod passes through the through hole and the chute to limit the displacement of the sliding sleeve (14). An arc groove is provided in the lower part of the sliding sleeve (14), and the arc groove is connected to the pipe clamp (19).

2. The shaft diameter sensor mounting device according to claim 1, wherein The pipe clamp (19) is of an openable and closable type, is buckled on the drum shaft (1), and is fastened with a wing bolt (18). A support column (17) is provided on the outer wall of the pipe clamp (19). A fixing hole is provided on the support column (17). The support column (17) is sleeved inside the lower part of the sliding sleeve (14), and a fixing rod penetrates through the fixing hole and the arc groove.

3. The shaft diameter sensor mounting device according to claim 2, characterized in that, Inside the sensor housing (4) is provided with a detection element. At the bottom of the sensor housing (4) is provided a signal line outlet (6), and the data of the detection element is transmitted through a signal line inside the signal line outlet (6).

4. The shaft diameter sensor mounting device according to claim 3, characterized in that, The fixing device includes: a cross brace device (5) and a fastening strap (7). The cross brace device (5) is arranged on both sides of the sensor housing (4), and the fastening strap (7) is arranged at the bottom of the sensor housing (4).

5. The shaft diameter sensor mounting device according to claim 4, characterized in that, The cross brace device (5) includes two threaded tubes with internal threads and are respectively arranged on both sides of the sensor housing (4). A lead screw is arranged inside the threaded tube, and the lead screw can abut against surrounding objects to play a role in fixing the stator part.

6. The shaft diameter sensor mounting device according to claim 5, wherein, The fastening strap (7) is provided with through holes, and a rope-like object passes through the through holes. The rope-like object pulls the fastening strap (7) to surrounding fixed objects to play a role in fixing the sensor housing (4).

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