Casing lowering auxiliary tool for geothermal drilling construction

Abstract

The utility model relates to the technical field of casing pipe assistance, and provides a casing pipe lowering auxiliary tool for geothermal drilling construction, which comprises a base, a fixed arc, a placing barrel, a speed reducing assembly and a casing pipe, the fixed arc is fixedly arranged on the upper wall of the base, and a support rod is arranged at the tail end of the fixed arc; a supporting frame is arranged on the upper wall of the base, a supporting shaft is arranged on the outer wall of the containing barrel, and the supporting shaft is rotationally connected to the inner wall of the supporting frame. Through the arrangement of the speed reducer, the output torque of the first motor can be effectively increased, a containing barrel can rotate according to the track of a fixed arc, the containing barrel can be changed from the horizontal state to the vertical state, a sleeve can be output vertically, and through the arrangement of the rotating damper, the situation that when the containing barrel is vertical, the sleeve falls off uncontrollably can be avoided; and through the arrangement of a baffle, the situation that the sleeve falls off in the vertical process is avoided, and the sleeve is located in the containing barrel all the time.

Description

Technical Field

[0001] This utility model belongs to the field of casing auxiliary technology, specifically relating to a casing lowering auxiliary tool for geothermal drilling construction. Background Technology

[0002] Geothermal drilling is a crucial engineering project that uses drilling technology to extract geothermal resources from depths of thousands of meters underground, primarily for developing geothermal power generation or direct heating. It requires penetrating high-temperature, high-pressure rock strata, precisely locating geothermal reservoirs, and employing corrosion-resistant materials and special processes to prevent wellbore collapse and fluid leakage. This technology boasts advantages such as being clean, renewable, and highly stable, making it a vital link in driving energy transition.

[0003] A known authorized patent with application number 202022371265.6 discloses an auxiliary tool for casing lowering in geothermal drilling construction: It includes a baffle and a base. The lower end of the baffle is vertically connected to the rear end of the base. The upper surface of the base is sloped. A first groove is provided on the base, and a front end stop is inserted into the first groove. A top insert plate is inserted into a first insertion hole and a second insertion hole. A second movable groove is carved on the left side of the baffle. A right side insert plate is slidably connected in the first movable groove, and a left side insert plate is slidably connected in the second movable groove. Rollers are provided at the bottom of the base. This utility model avoids tilting and slippage during pipe lowering, is practical and convenient, simple to operate, improves work efficiency, ensures the personal safety of workers, and is easy to promote.

[0004] However, in implementing the relevant technology, the following problems were found with the above technical solution: when in use, the tool is difficult to control the conveying speed of the sleeve, and cannot adjust the sleeve from a horizontal state to a vertical state, requiring other workpieces to assist.

[0005] Therefore, an auxiliary tool for casing lowering in geothermal drilling is proposed to solve the above problems. Utility Model Content

[0006] This utility model proposes an auxiliary tool for lowering casing in geothermal drilling construction, which solves the problems in related technologies where the tool is difficult to control the casing conveying speed and cannot adjust the casing from a horizontal to a vertical state, requiring other workpieces for assistance.

[0007] The technical solution of this utility model is as follows: A casing lowering auxiliary tool for geothermal drilling construction includes: a base, a fixing arc, a placement bucket, a deceleration assembly, and a casing. The fixing arc is fixedly installed on the upper wall of the base, and a support rod is provided at the end of the fixing arc.

[0008] The upper wall of the base is provided with a support frame, and the outer wall of the placement bucket is provided with a support shaft, which is rotatably connected to the inner wall of the support frame.

[0009] The sleeve is installed on the inner wall of the placement barrel, and a baffle is inserted into one end of the placement barrel.

[0010] Preferably, the inner wall of the base is rotatably connected to two sets of limiting rollers. Each limiting roller includes a rubber layer and a rotating shaft. The rubber layer is sleeved on the outer wall of the rotating shaft, and the rotating shaft is rotatably connected to the inner wall of the placement bucket.

[0011] Preferably, the rubber layer is elastically interference-fitted with the sleeve.

[0012] Preferably, the outer wall of the placement bucket is provided with a rotation damper, the input end of the rotation damper is connected to a rotating shaft, and the outer wall of the placement bucket is provided with a second motor, the output end of the second motor is fixedly connected to another set of rotating shafts.

[0013] Preferably, the reduction assembly includes a fixed gear, multiple planetary gears, a connecting shaft, and a gear ring. The planetary gears mesh with the fixed gears and are arranged around the circumference of the fixed gears. The gear ring is sleeved on the outer wall of the planetary gears and meshes with them. The connecting shaft is rotatably connected inside the planetary gears and is fixedly connected to the output frame.

[0014] Preferably, the outer wall of the placement bucket is provided with a first motor, and the output end of the first motor is fixedly connected to a fixed gear.

[0015] Preferably, a gear is fixedly connected to the outer surface of the output frame, and gear teeth are provided on the inner wall of the fixed arc, the gear teeth meshing with the gear.

[0016] Preferably, a support bucket is fixedly connected to the outer wall of the gear ring, and the other end of the support bucket is fixedly connected to the outer wall of the placement bucket.

[0017] Preferably, the base has a through hole inside, and the diameter of the through hole is larger than the outer diameter of the sleeve.

[0018] Preferably, the inner wall of the base is threaded with a support bolt, and the end of the support bolt is fixedly connected to a support base.

[0019] The working principle and beneficial effects of this utility model are as follows:

[0020] By setting a speed reduction device, the output torque of the first motor can be effectively increased, allowing the placement bucket to rotate along a fixed arc trajectory, enabling it to move from horizontal to vertical and allowing the sleeve to be output vertically. By setting a rotation damper, the sleeve can be prevented from falling uncontrollably when the placement bucket is vertical, preventing it from falling too fast and causing damage to the construction machine. By setting a baffle, the sleeve is prevented from coming out during the vertical process, keeping it always inside the placement bucket. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a top-view three-dimensional structural diagram of the present invention;

[0024] Figure 3 A cross-sectional three-dimensional structural diagram of the connecting shaft is provided for this utility model;

[0025] Figure 4 A cross-sectional three-dimensional structural diagram of the deceleration component is provided for this utility model;

[0026] Figure 5 This invention provides a cross-sectional perspective view of the base structure.

[0027] Figure 6 A cross-sectional structural diagram of the limiting roller is provided for this utility model.

[0028] In the diagram: 1. Base; 2. Fixed arc; 3. Gear teeth; 4. Support rod; 5. Placement bucket; 6. Reduction assembly; 61. Fixed gear; 62. Planetary gear; 63. Connecting shaft; 64. Gear ring; 65. First motor; 66. Output frame; 7. Support bucket; 8. Gear; 9. Limiting roller; 91. Rubber layer; 92. Rotating shaft; 10. Second motor; 11. Through hole; 12. Rotation damper; 13. Baffle; 14. Support frame; 15. Support shaft; 16. Support bolt; 17. Support base; 18. Sleeve. Detailed Implementation

[0029] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0030] Implementation

[0031] Please see Figure 1 -6, an auxiliary tool for casing lowering in geothermal drilling construction, comprising: a base 1, a fixing arc 2, a placement bucket 5, a deceleration assembly 6, and a casing 18. The fixing arc 2 is fixedly installed on the upper wall of the base 1, and a support rod 4 is provided at the end of the fixing arc 2.

[0032] A support frame 14 is provided on the upper wall of the base 1, and a support shaft 15 is provided on the outer wall of the placement bucket 5. The support shaft 15 is rotatably connected to the inner wall of the support frame 14.

[0033] The sleeve 18 is installed on the inner wall of the placement bucket 5, and a baffle 13 is inserted into one end of the placement bucket 5.

[0034] The technical solution provided in this embodiment is as follows: In use, first move the device to the construction position, then align the through hole 11 with the construction well opening. Next, adjust the base 1 to a horizontal state by rotating the support bolt 16. Then, insert the sleeve 18 into the placement bucket 5. When inserting, ensure the self-locking function of the second motor 10 is turned off. After complete insertion, insert the baffle 13 and start the first motor 65. After starting, the first motor 65 drives the fixed gear 61 to rotate, which in turn drives the planetary gear 62 to rotate around the circumference of the fixed gear 61. The rotation of the planetary gear 62 is transmitted to the conveyor via the connecting shaft 63. The output frame 66 rotates, amplifying the output torque of the first motor 65. The output frame 66 then transmits the rotation to the gear 8. The gear 8, through the meshing gear teeth 3, causes the placement bucket 5 to rotate around the support shaft 15. After the placement bucket 5 is vertical, the baffle 13 is pulled out, and the second motor 10 is started. The second motor 10 drives the limiting roller 9 to rotate, causing the sleeve 18 to move downward. After leaving the conveying range of the second motor 10, the damper 12 rotates to reduce the speed of the limiting roller 9. Through the friction between the rubber layer 91 and the sleeve 18, the conveying speed of the sleeve 18 is reduced. The sleeve 18 is then conveyed to the working well through the through hole 11.

[0035] Furthermore, the inner wall of the base 1 is rotatably connected to two sets of limiting rollers 9. The limiting rollers 9 include a rubber layer 91 and a rotating shaft 92. The rubber layer 91 is sleeved on the outer wall of the rotating shaft 92, and the rotating shaft 92 is rotatably connected to the inner wall of the placement bucket 5.

[0036] Specifically, by setting the limiting roller 9, the sleeve 18 can always be in the center position when placed inside the barrel 5, avoiding collisions.

[0037] Furthermore, the rubber layer 91 is elastically interference-fitted with the sleeve 18, and a rotation damper 12 is provided on the outer wall of the placement bucket 5. The input end of the rotation damper 12 is connected to the rotating shaft 92. A second motor 10 is provided on the outer wall of the placement bucket 5, and the output end of the second motor 10 is fixedly connected to another set of rotating shafts 92.

[0038] Specifically, by using the elastic interference and the rotation damper 12, the rotational speed of the limiting roller 9 can be reduced when the sleeve 18 descends, and the rubber layer 91 increases the friction between it and the sleeve 18, making the descent speed of the sleeve 18 more stable.

[0039] Furthermore, the reduction assembly 6 includes a fixed gear 61, multiple planetary gears 62, a connecting shaft 63, and a gear ring 64. The planetary gears 62 mesh with the fixed gear 61 and are arranged around the circumference of the fixed gear 61. The gear ring 64 is sleeved on the outer wall of the planetary gears 62 and meshes with the gear ring 64. The connecting shaft 63 is rotatably connected inside the planetary gears 62 and is fixedly connected to the output frame 66. A first motor 65 is provided on the outer wall of the placement barrel 5, and the output end of the first motor 65 is fixedly connected to the fixed gear 61.

[0040] Specifically, by fitting the gear ring 64 onto the outer wall of the planetary gear 62, the planetary gear 62 can be prevented from shifting during movement.

[0041] Furthermore, a gear 8 is fixedly connected to the outer surface of the output frame 66, and gear teeth 3 are provided on the inner wall of the fixed arc 2, which mesh with the gear 8.

[0042] Specifically, by setting up the output frame 66, the output torque of the first motor 65 can be increased, and the gear 8 can be transmitted through the output frame 66, resulting in a higher rotational torque for the gear 8.

[0043] Furthermore, a support barrel 7 is fixedly connected to the outer wall of the gear ring 64, and the other end of the support barrel 7 is fixedly connected to the outer wall of the placement barrel 5.

[0044] Specifically, the support bucket 7 provides sufficient support for the deceleration assembly 6, preventing damage to the parts of the deceleration assembly 6 due to increased stress during operation.

[0045] Furthermore, the base 1 has a through hole 11 inside, and the diameter of the through hole 11 is larger than the outer diameter of the sleeve 18.

[0046] Furthermore, the inner wall of the base 1 is threaded with a support bolt 16, and the end of the support bolt 16 is fixedly connected to a support base 17.

[0047] Specifically, by setting the support bolt 16, the device can be positioned at the correct angle and height by rotating the support bolt 16.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary tool for lowering casing during geothermal drilling, comprising: The base (1), the fixing arc (2), the placement bucket (5), the deceleration assembly (6), and the sleeve (18) are characterized in that the fixing arc (2) is fixedly installed on the upper wall of the base (1), and a support rod (4) is provided at the end of the fixing arc (2). The upper wall of the base (1) is provided with a support frame (14), and the outer wall of the placement bucket (5) is provided with a support shaft (15), which is rotatably connected to the inner wall of the support frame (14). The sleeve (18) is installed on the inner wall of the placement bucket (5), and a baffle (13) is inserted into one end of the placement bucket (5).

2. The casing lowering auxiliary tool for geothermal drilling construction according to claim 1, characterized in that: The inner wall of the base (1) is rotatably connected to two sets of limiting rollers (9). The limiting rollers (9) include a rubber layer (91) and a rotating shaft (92). The rubber layer (91) is sleeved on the outer wall of the rotating shaft (92), and the rotating shaft (92) is rotatably connected to the inner wall of the placement bucket (5).

3. The casing lowering auxiliary tool for geothermal drilling construction according to claim 2, characterized in that: The rubber layer (91) is elastically interference-fitted with the sleeve (18).

4. The casing lowering auxiliary tool for geothermal drilling construction according to claim 1, characterized in that: The outer wall of the placement bucket (5) is provided with a rotation damper (12), the input end of the rotation damper (12) is connected to the rotating shaft (92), and the outer wall of the placement bucket (5) is provided with a second motor (10), the output end of the second motor (10) is fixedly connected to another set of rotating shafts (92).

5. The casing lowering auxiliary tool for geothermal drilling construction according to claim 1, characterized in that: The reduction assembly (6) includes a fixed gear (61), multiple planetary gears (62), a connecting shaft (63), and a gear ring (64). The planetary gears (62) mesh with the fixed gear (61), and the planetary gears (62) are arranged around the circumference of the fixed gear (61). The gear ring (64) is sleeved on the outer wall of the planetary gears (62), and the planetary gears (62) mesh with the gear ring (64). The connecting shaft (63) is rotatably connected inside the planetary gears (62), and the connecting shaft (63) is fixedly connected to the output frame (66).

6. The casing lowering auxiliary tool for geothermal drilling construction according to claim 5, characterized in that: The outer wall of the placement bucket (5) is provided with a first motor (65), and the output end of the first motor (65) is fixedly connected to a fixed gear (61).

7. The casing lowering auxiliary tool for geothermal drilling construction according to claim 5, characterized in that: The output frame (66) is fixedly connected to a gear (8), and the inner wall of the fixed arc (2) is provided with gear teeth (3), which mesh with the gear (8).

8. The casing lowering auxiliary tool for geothermal drilling construction according to claim 5, characterized in that: The outer wall of the gear ring (64) is fixedly connected to a support barrel (7), and the other end of the support barrel (7) is fixedly connected to the outer wall of the placement barrel (5).

9. The casing lowering auxiliary tool for geothermal drilling construction according to claim 1, characterized in that: The base (1) has a through hole (11) inside, and the diameter of the through hole (11) is larger than the outer diameter of the sleeve (18).

10. The casing lowering auxiliary tool for geothermal drilling construction according to claim 1, characterized in that: The inner wall of the base (1) is threaded with a support bolt (16), and the end of the support bolt (16) is fixedly connected to a support base (17).

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