A verticality rechecking device and method for a shaft well

Abstract

The verticality rechecking device for a shaft well hole comprises a rechecking instrument, a control center and a watertight cable, a horizontal sensor is arranged in a conical part of the rechecking instrument, a telescopic oil cylinder with a displacement sensor is arranged in a support plate, the watertight cable is electrically connected with the horizontal sensor and the displacement sensor, when an extension arm of the telescopic oil cylinder extends out of the support plate and touches a shaft wall, the displacement value of the extension arm can be sent to the control center through the displacement sensor, the touch detection mode is not affected by mud and gravel, is suitable for verticality rechecking operation of a large-diameter and large-depth shaft well hole in a water-rich stratum, a leveling assembly is arranged in a cavity surrounded by a cover and the support plate of the rechecking instrument, the rechecking instrument can be leveled through the leveling assembly, the displacement of the extension arm is ensured to be a horizontal extension displacement, fitting of a center coordinate is more in line with requirements, and the rechecking result is accurate and reliable; the verticality rechecking method for the shaft well hole is simple in operation and accurate and reliable in rechecking result.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of shaft construction, and particularly relates to a shaft well verticality rechecking device and a rechecking method. BACKGROUND

[0002] A shaft refers to an upright well-shaped pipeline, which is usually formed by vertically drilling down by a shaft drilling machine. In order to detect the verticality of the shaft drilling machine in the drilling process, most of the existing shaft drilling machines are provided with a verticality detection system. As shown in the figure, the system mainly comprises a gyro inclinometer installed on a drilling machine guide, which is used to measure the self-rotation angle of a drill bit and the inclination angles in X and Y directions. During measurement, the gyro needs to be self-adjusted, and the shaft is in a high-temperature state, and the mud and sandstone are mixed, and the drill bit is vibrated at a high frequency during the excavation process, which affects the final calculation of the deviation data, and the rechecking needs to be performed. Figure 1

[0003] A common rechecking method is ultrasonic rechecking, which is performed by lowering an ultrasonic instrument into the shaft, detecting the shaft wall position by using ultrasonic waves, and then judging the shaft well verticality. The accuracy of this rechecking method is relatively high when the upper part of the shaft without mud is rechecked, but for the lower part of the shaft, especially the lower part of the shaft in a deep water-rich stratum, not only is there mud, but also sand and stone debris are mixed in the mud. The error of ultrasonic detection in this part is large, and the accuracy is difficult to guarantee. At present, there is no good rechecking device and method for the verticality of a large-diameter and deep shaft in a water-rich stratum. SUMMARY

[0004] The purpose of the present application is to provide a shaft well verticality rechecking device and method which is accurate and reliable in rechecking results and suitable for rechecking the verticality of a large-diameter and deep shaft in a water-rich stratum.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is a shaft well verticality rechecking device, which comprises:

[0006] a rechecking instrument suspended in the shaft;

[0007] a control center on the ground;

[0008] a water-tight cable electrically connected with the rechecking instrument and the control center;

[0009] ​The rechecking instrument has a conical part, a support plate and a cover which are sequentially and sealingly connected from bottom to top, the conical part is internally provided with a level sensor for detecting the posture of the rechecking instrument, the support plate is internally provided with a telescopic oil cylinder for detecting the position of the shaft wall of the shaft, the telescopic oil cylinder is a telescopic oil cylinder with a displacement sensor, the water-tight cable is electrically connected with the level sensor and the displacement sensor, when the telescopic arm of the telescopic oil cylinder extends out of the side wall of the support plate and touches the shaft wall, the displacement sensor sends the displacement value of the telescopic arm to the control center, the top center of the cover is connected with a hollow pipe for penetrating the water-tight cable, the cover and the support plate enclose a cavity, and the rechecking instrument further comprises a leveling assembly arranged in the cavity, the leveling assembly adjusts the posture of the rechecking instrument by changing the gravity center position of the rechecking instrument.

[0010] Preferably, the telescopic oil cylinder has at least three, which are evenly distributed around the axis of the conical part.

[0011] Preferably, the support plate is a square plate, and the support plate covers the upper end surface of the conical part.

[0012] Preferably, the telescopic arm extends and retracts along the radial direction of the upper end surface of the conical part, or the telescopic arm extends and retracts along the tangential direction of the upper end surface of the conical part.

[0013] Preferably, the end of the telescopic arm is provided with an elastic trigger assembly, the elastic trigger assembly comprises a contact, a spring and a deformation sensor, the contact is telescopically inserted into a receiving groove at the end of the telescopic arm, the spring and the deformation sensor are arranged in the receiving groove and located between the contact and the bottom wall of the receiving groove, the two ends of the spring abut against the contact and the bottom wall of the receiving groove respectively, the maximum elastic force of the spring is 30-50% of the working thrust of the telescopic oil cylinder, when the contact is retracted to the limit position, the deformation sensor is triggered, and the telescopic oil cylinder stops working.

[0014] Further preferably, the end of the contact outside the receiving groove is conical, the end of the contact inside the receiving groove is provided with an annular flange, the slot of the receiving groove is connected with an end cover for blocking the annular flange, and the contact is arranged in the end cover and is in dynamic sealing connection with the end cover.

[0015] Preferably, the leveling assembly has at least three groups and is evenly distributed around the axis of the conical part.

[0016] Further preferably, the leveling assembly comprises a slide rail, a slide block, a screw rod pair and a servo motor arranged on the upper surface of the support plate, the slide rail extends along the radial direction of the upper end surface of the conical part, the slide block is a counterweight slide block, the slide block is slidably connected to the slide rail, the nut of the screw rod pair is connected to the slide block, the screw rod of the screw rod pair is connected to the servo motor, when the servo motor rotates, the screw rod is driven to rotate, the nut and the slide block are driven to slide along the slide rail, and the gravity center position of the rechecking instrument is changed.

[0017] Further preferably, the bottom surface of the hollow tube is connected with a flange plate, and the leveling assembly further comprises a gas support rod, the upper end of the gas support rod is hinged to the edge of the flange plate, and the lower end of the gas support rod is hinged to the nut.

[0018] Further preferably, the bottom outer wall of the hollow tube is provided with a side opening, the side opening is used for penetrating the oil pipe of the telescopic oil cylinder and the water-tight cable, and the water-tight cable is further electrically connected with the servo motor.

[0019] Further preferably, the inside of the conical part is hollow to form a sealed cabin, the sealed cabin is provided with a center pod which is sealingly connected to the lower end surface of the support plate, and the center pod is provided with an azimuth angle sensor, a power module and the horizontal sensor.

[0020] Further preferably, the support plate is penetrated with a water pipe and a gas pipe which are in communication with the sealed cabin, the lower end of the water pipe is located at the bottom of the sealed cabin, the lower end of the gas pipe is located at the top of the sealed cabin, the water pipe is used for injecting water into the sealed cabin to make the rechecking instrument sink by increasing weight, and the gas pipe is used for supplying gas to the sealed cabin to make the water in the sealed cabin flow out along the water pipe to make the rechecking instrument float by reducing weight.

[0021] Further preferably, a pull rope sensor is arranged between the rechecking instrument and the chain suspending the rechecking instrument, and the pull rope sensor is used for detecting the sinking or floating distance of the rechecking instrument.

[0022] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0023] The verticality rechecking device for shaft well includes a rechecking instrument, a control center and a watertight cable, the rechecking instrument is sequentially and tightly connected from bottom to top by a conical part, a support plate and a cover, a horizontal sensor is arranged in the conical part, a telescopic oil cylinder with a displacement sensor is arranged in the support plate, the watertight cable is electrically connected with the horizontal sensor and the displacement sensor, when the telescopic arm of the telescopic oil cylinder extends out of the support plate and touches the shaft wall, the displacement sensor can send the displacement value of the telescopic arm to the control center, the touch detection mode is not affected by mud and gravel, is suitable for the verticality rechecking operation of the large-diameter and large-depth shaft well in water-rich stratum, the leveling assembly for changing the gravity center position of the rechecking instrument is arranged in the cavity surrounded by the cover and the support plate, when the horizontal sensor detects that the rechecking instrument is inclined, the leveling assembly can level the rechecking instrument, so that the displacement of the telescopic arm is the horizontal extension displacement, the fitting center coordinate is more in line with the requirements, so that the rechecking result is accurate and reliable.

[0024] The verticality rechecking method for shaft well provided by the application calculates the shaft wall touch point coordinate by the horizontal extension displacement of the telescopic arm detected by the displacement sensor and the deflection angle detected by the azimuth angle sensor, and then uses a plurality of shaft wall touch point coordinates to fit the actual center coordinate of the section at the set depth, so that the verticality of the shaft well can be calculated by the actual center coordinate and the initial center coordinate and the set depth, the operation is simple, the rechecking result is accurate and reliable, and the method is suitable for the verticality rechecking operation of the large-diameter and large-depth shaft well in water-rich stratum. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the verticality detection system in the prior art.

[0026] Figure 2 It is a structural schematic diagram of the preferred embodiment of the verticality rechecking device for shaft well in the application.

[0027] Figure 3 It is Figure 2 a front view schematic diagram of the rechecking instrument in

[0028] Figure 4 , Figure 5 It is Figure 3 a top view schematic diagram of Figure 4 the telescopic arm is not extended, Figure 5 the telescopic arm is extended.

[0029] Figure 6 It is Figure 4 a sectional view schematic diagram of the A-A direction in

[0030] Figure 7 It is Figure 5 a local enlarged schematic diagram of B in

[0031] The components are: 10. Verifier; 11. Conical section; 111. Horizontal sensor; 112. Sealed chamber; 113. Central pod; 114. Azimuth sensor; 115. Power module; 12. Support plate; 121. Telescopic cylinder; 122. Displacement sensor; 123. Telescopic arm; 1231. Receiving groove; 1232. End cap; 124. Elastic trigger assembly; 1241. Contact; 1242. Spring; 1243. Deformation sensor; 1244. Annular flange; 125. Water pipe; 126. Gas pipe; 13. Cover; 131. Hollow pipe; 132. Cavity; 133. Flange; 134. Side opening; 14. Leveling assembly; 141. Slide rail; 142. Slider; 143. Lead screw; 144. Nut; 145. Servo motor; 146. Gas support rod; 15. Pull rope sensor; 20. Control center; 30. Watertight cable. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more readily understood by those skilled in the art.

[0033] like Figures 2 to 7 As shown, the verticality verification device for a vertical shaft provided by the present invention includes: a verification instrument 10 suspended inside the vertical shaft, a control center 20 located on the ground, and a watertight cable 30 electrically connected to the verification instrument 10 and the control center 20; the verification instrument 10 has a conical part 11, a support plate 12, and a cover 13 sequentially and sealed from bottom to top; a horizontal sensor 111 for detecting the attitude of the verification instrument 10 is provided inside the conical part 11; a telescopic cylinder 121 for detecting the position of the vertical shaft wall is provided inside the support plate 12; the telescopic cylinder 121 is a telescopic cylinder with a displacement sensor 122; and the watertight cable... The 30 is electrically connected to the horizontal sensor 111 and the displacement sensor 122. When the telescopic arm 123 of the telescopic cylinder 121 extends out of the side wall of the support plate 12 and touches the shaft wall, the displacement sensor 122 sends the displacement value of the telescopic arm 123 to the control center 20. The top center of the cover 13 is connected to a hollow tube 131 for passing through the watertight cable 30. The cover 13 and the support plate 12 form a cavity 132. The verification instrument 10 also includes a leveling component 14 disposed in the cavity 13. The leveling component 14 adjusts the attitude of the verification instrument 10 by changing the center of gravity position of the verification instrument 10.

[0034] The advantage of this setup is that it uses a touch-based detection method, which is unaffected by mud or sand, making it suitable for verticality verification operations of large-diameter and deep vertical shafts in water-rich formations. When the horizontal sensor detects that the verification instrument is tilted, it can be leveled by the leveling component, thereby ensuring that the displacement of the telescopic arm is a horizontal extension displacement, which is more in line with the requirements when fitting the center coordinates, thus making the verification results accurate and reliable.

[0035] In the embodiment, the telescopic oil cylinder 121 has four, which are evenly distributed around the axis of the conical part 11, the support plate 12 is a square plate, the support plate 12 covers the upper end surface of the conical part 11, the side length of the support plate 12 is 1.15-1.3 times the radius of the upper end surface of the conical part 11, so as to accommodate the telescopic oil cylinder 121, the telescopic arm 123 of the telescopic oil cylinder 121 telescopes in the tangential direction parallel to the upper end surface of the conical part 11.

[0036] In order to avoid the interference of the sand and other sundries in the mud when the telescopic arm 123 is extended, affecting the accuracy of the detection result, in the embodiment, the end of the telescopic arm 123 is provided with an elastic trigger assembly 124, specifically, the elastic trigger assembly 124 includes a contact 1241, a spring 1242 and a deformation sensor 1243, the contact 1241 is telescopically inserted into the accommodating groove 1231 at the end of the telescopic arm 123, the spring 1242 and the deformation sensor 1243 are arranged in the accommodating groove 1231 and located between the contact 1241 and the bottom wall of the accommodating groove 1231, the two ends of the spring 1242 abut against the contact 1241 and the bottom wall of the accommodating groove 1231 respectively, the spring 1242 has a tendency to drive the contact 1241 to extend outward, the maximum elastic force of the spring 1242 is 30-50% of the working thrust of the telescopic oil cylinder 121, when the contact 1241 contacts the sand in the mud, the spring 1242 can push it away due to its certain elastic force, when the contact 1241 contacts the shaft wall, the contact 1241 will retract and compress the spring 1242, when the contact 1241 retracts to the limit position, the deformation sensor 1243 triggers and transmits a trigger signal to the controller of the telescopic oil cylinder 121, so that the controller stops supplying oil to the telescopic oil cylinder 121, and the telescopic oil cylinder 121 stops working. The transmission of the trigger signal can adopt a non-contact transmission mode such as wireless, Bluetooth, etc., or a wired transmission mode such as signal line, etc., without affecting the use.

[0037] In the embodiment, the end of the contact 1241 outside the accommodating groove 1231 is conical, which can conveniently push away the sand in the mud, and when the hardness of the shaft wall surface is low, the end of the contact 1241 can also be pressed into the wall, ensuring the stability during rechecking, at the same time, the end of the contact 1241 inside the accommodating groove 1231 is provided with an annular flange 1244, the slot of the accommodating groove 1231 is connected with an end cover 1232 for blocking the annular flange 1244, the contact 1241 is arranged in the end cover 1232 and is in dynamic sealing connection with the end cover 1232.

[0038] In the embodiment, the leveling assembly 14 has four groups and is evenly distributed around the axis of the conical part 11. Specifically, the leveling assembly 14 includes a sliding rail 141 arranged on the upper surface of the support plate 12, a sliding block 142, a screw pair, and a servo motor 145. The sliding rail 141 extends in the radial direction of the upper end surface of the conical part 11. The sliding block 142 is a counterweight sliding block and is slidably connected to the sliding rail 141. The nut 144 of the screw pair is connected to the sliding block 142, and the screw rod 143 of the screw pair is connected to the servo motor 145. When the servo motor 145 rotates, the screw rod 143 is driven to rotate, so that the nut 144 and the sliding block 142 slide along the sliding rail 141, thereby changing the center of gravity of the rechecking instrument 10.

[0039] In the embodiment, the bottom surface of the hollow tube 131 is connected to a flange plate 133. The leveling assembly 14 further includes a gas support rod 146, the upper end of which is hinged to the edge of the flange plate 133, and the lower end of which is hinged to the nut 144. Further, the bottom outer wall of the hollow tube 131 is provided with a side opening 134 for the oil pipe of the telescopic oil cylinder 121 and the water-tight cable 30. The water-tight cable 30 is also electrically connected to the servo motor 145.

[0040] In the embodiment, the inside of the conical part 11 is hollow to form a sealed cabin 112. The sealed cabin 112 is sealingly connected to the lower end surface of the support plate 12. The sealed cabin 112 is provided with an azimuth sensor 114, a power module 115, and a level sensor 111. The azimuth sensor 114 and the power module 115 are electrically connected to the water-tight cable 30. The azimuth sensor 114 is used to detect the rotation angle of the rechecking instrument. The power module 115 is used to supply power to the azimuth sensor 114 and the level sensor 111.

[0041] In the embodiment, the support plate 12 is provided with a water pipe 125 and an air pipe 126 that communicate with the sealed cabin 112. The lower end of the water pipe 125 is located at the bottom of the sealed cabin 112, and the lower end of the air pipe 126 is located at the top of the sealed cabin 112. The water pipe 125 and the air pipe 126 are arranged on both sides of the axis of the conical part 11. The water pipe 125 is used to inject water into the sealed cabin 112 to increase the weight of the rechecking instrument 10 and make it sink. The air pipe 126 is used to supply air to the sealed cabin 112 to make the water in the sealed cabin 112 flow out through the water pipe 125, thereby reducing the weight of the rechecking instrument 10 and making it float up.

[0042] In the embodiment, a pull rope sensor 15 is arranged between the rechecking instrument 10 and the chain suspending the rechecking instrument 10. The pull rope sensor 15 is used to detect the distance of the rechecking instrument 10 sinking or floating.

[0043] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A device for checking the verticality of a shaft, comprising: a checking instrument suspended in the shaft; a control center on the ground; a watertight cable electrically connected to the checking instrument and the control center; characterized in that: the checking instrument has, from bottom to top, a conical part, a support plate, a cover, and a leveling assembly; the inside of the conical part is hollow to form a sealed cabin, the sealed cabin is provided with a central hanging cabin sealed to the lower end surface of the support plate, the central hanging cabin is provided with an azimuth angle sensor, a power module, and a level sensor for detecting the attitude of the checking instrument; the support plate is provided with telescopic oil cylinders with displacement sensors for detecting the position of the shaft wall, the telescopic oil cylinders are at least three and are evenly distributed around the axis of the conical part, the support plate is provided with a water pipe and an air pipe connected to the sealed cabin, the lower end of the water pipe is located at the bottom of the sealed cabin, and the lower end of the air pipe is located at the top of the sealed cabin; the water pipe is used to inject water into the sealed cabin to make the checking instrument sink by increasing its weight, and the air pipe is used to supply air to the sealed cabin to make the water in the sealed cabin flow out along the water pipe, so that the checking instrument floats by reducing its weight; the top center of the cover is connected to a hollow pipe for passing the watertight cable; the leveling assembly is arranged in the cavity surrounded by the cover and the support plate, and the leveling assembly adjusts the attitude of the checking instrument by changing the position of the center of gravity of the checking instrument; a pull rope sensor is arranged between the checking instrument and the chain suspending the checking instrument, and the pull rope sensor is used to detect the distance of the checking instrument sinking or floating; the watertight cable is electrically connected to the level sensor and the displacement sensor; when the telescopic arms of the telescopic oil cylinders extend out of the side wall of the support plate and touch the shaft wall, the displacement sensor sends the displacement value of the telescopic arms to the control center; the horizontal displacement of the telescopic arms detected by the displacement sensor is combined with the deflection angle detected by the azimuth angle sensor to calculate the coordinates of the shaft wall touch points; the actual center coordinates of the section at the set depth are fitted by using a plurality of shaft wall touch point coordinates; and the verticality of the shaft can be calculated by using the actual center coordinates, the initial center coordinates, and the set depth. The support plate is a square plate, and the support plate covers the upper end surface of the conical part. The telescopic arms extend or retract in the radial direction of the upper end surface of the conical part, or the telescopic arms extend or retract in the tangential direction of the upper end surface of the conical part. The end of the telescopic arm is provided with an elastic trigger assembly, the elastic trigger assembly includes a contact, a spring, and a deformation sensor, the contact is telescopically inserted into a receiving groove at the end of the telescopic arm, the spring and the deformation sensor are arranged in the receiving groove and located between the contact and the bottom wall of the receiving groove, the two ends of the spring abut against the contact and the bottom wall of the receiving groove respectively, the maximum elastic force of the spring is 30-50% of the working thrust of the telescopic oil cylinder, when the contact is retracted to the limit position, the deformation sensor is triggered, and the telescopic oil cylinder stops working. The end of the contact outside the receiving groove is conical, and the end of the contact inside the receiving groove is provided with an annular flange, the slot of the receiving groove is connected with an end cover for blocking the annular flange, the contact is inserted into the end cover and is in dynamic sealing connection with the end cover. The leveling assembly is at least three and is evenly distributed around the axis of the conical part.

2. The shaft alignment device of claim 1, wherein: ​ 3. The shaft alignment device of claim 1, wherein: ​ 4. The shaft alignment device of claim 1, wherein: ​ 5. The shaft alignment device of claim 4, wherein: ​ 6. The shaft alignment device of claim 1, wherein: ​ 7. The shaft alignment device of claim 6, wherein: The leveling assembly comprises a sliding rail, a sliding block, a screw rod pair and a servo motor, the sliding rail extends along the radial direction of the upper end surface of the conical part, the sliding block is a counterweight sliding block, the sliding block is slidably connected to the sliding rail, the nut of the screw rod pair is connected to the sliding block, the screw rod of the screw rod pair is connected to the servo motor, when the servo motor rotates, the screw rod rotates, the nut and the sliding block slide along the sliding rail, and the center of gravity of the rechecking instrument is changed.

8. The shaft alignment device of claim 7, wherein: The bottom surface of the hollow tube is connected with a flange plate, the leveling assembly further comprises a gas support rod, the upper end of the gas support rod is hinged to the edge of the flange plate, and the lower end of the gas support rod is hinged to the nut.

9. The shaft alignment device of claim 7, wherein: The outer wall of the bottom of the hollow tube is provided with a side opening, the side opening is used for penetrating the oil pipe of the telescopic oil cylinder and the water-proof cable, and the water-proof cable is further electrically connected with the servo motor.

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