Early warning detection device for geothermal well drilling

Abstract

The invention relates to the technical field of geothermal well drilling, and particularly discloses a geothermal well drilling early warning detection device, an assembly module is installed on the outer wall of a transmission rod, the assembly module rotates along with rotation of the transmission rod, wheels are in contact with a well wall during well drilling through rolling wheels vertically arranged on the wheels, and the assembly module is connected with the well wall through transverse friction force between the multiple wheels and the well wall. The positioning semi-ring is matched with the first-stage ball head and the second-stage ball head, so that the positioning semi-ring does not rotate along with rotation of the assembly semi-ring, lifting of the positioning semi-ring along with the assembly semi-ring, the transmission rod and the drill bit is not affected, and after the drill bit deviates in drilling and breaks away from the vertical track, the drill bit drives the detection module on the positioning semi-ring to incline, and the detection module is not prone to falling off. The inclination condition is sensed by the detection module, the contact switch transmits an inclination signal to the peripheral terminal to remind personnel, and the inclination direction is reflected on the laminating paper, so that the personnel can know the inclination direction conveniently.

Description

Technical Field

[0001] The present invention belongs to the technical field of geothermal drilling, and particularly relates to a geothermal drilling early warning detection device. Background Art

[0002] Geothermal drilling is used for drilling geothermal steam and geothermal water, and is an important special technology and an essential means for exploring and exploiting geothermal fluids. In the prior art, when using a drill bit for vertical drilling, when the level of the drill bit changes and it tilts, the tilt signal cannot be transmitted to the external terminal in time at the initial stage of tilting to remind the personnel, causing the drill bit to deviate from the vertical track for a long time, increasing the cost. Summary of the Invention

[0003] The purpose of the present invention is to provide a geothermal drilling early warning detection device for detecting the level of the drill bit during vertical drilling, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: A geothermal drilling early warning detection device includes a drill bit and a transmission rod. The transmission rod is connected to the top of the drill bit. An assembly module is provided on the outer wall of the transmission rod, a positioning module is provided outside the assembly module, and a detection module is provided on the positioning module; The detection module includes an external cover, a circular plate, a connecting round hole, a branch rod, a connecting plate, a device notch, a contact switch, a linkage rod, a pen tip and a sticking paper. The circular plate is slidably fitted in the external cover. The connecting round hole is opened in the middle of the circular plate and penetrates through the circular plate up and down. The linkage rod is arranged in the connecting round hole and penetrates through the connecting round hole up and down. The pen tip is connected to the bottom end of the linkage rod. After the drill bit tilts during drilling and deviates from the vertical track, the detection module on the positioning semi-ring is tilted together with the drill bit. The part of the linkage rod below the circular plate is longer than the part above the circular plate, so that the linkage rod is always vertical.

[0005] Preferably, the assembly module includes an assembly semi-ring, a fixing semi-ring, a limiting semi-ring, a circular rod, and a first-level ball head. The assembly semi-rings are symmetrically arranged on the outer wall of the transmission rod left and right. The fixing semi-ring is connected to the top of the assembly semi-ring, and the inner wall of the fixing semi-ring is in contact with the outer wall of the transmission rod. The fixing semi-ring is fixedly connected to the transmission rod through positioning bolts. The limiting semi-ring is connected to the middle of the outer wall of the assembly semi-ring. The circular rods are connected to the upper and lower sides of the outer wall of the assembly semi-ring in a circumferential array. The first-level ball head is arranged in the middle of the end of the circular rod away from the assembly semi-ring. The assembly semi-rings are symmetrically arranged on the outer wall of the transmission rod left and right, and the fixing semi-ring and the transmission rod are connected and fixed through positioning bolts. Then, the two positioning semi-rings are respectively arranged outside the two assembly semi-rings. At the same time, the limiting semi-ring is located between the second-level ball heads arranged in an up-and-down array within the arc-shaped limiting notch. The circular rod and the first-level ball head provide a certain limiting effect to prevent the positioning semi-ring from contacting the assembly semi-ring and the limiting semi-ring.

[0006] Preferably, the positioning module includes positioning semi-rings, arc-shaped limiting notches, second-level ball heads, and fixing plates. The positioning semi-rings are symmetrically arranged on both sides of the transmission rod, and the positioning semi-rings are located outside the assembly semi-rings. The arc-shaped limiting notches are opened in the middle of the inner wall of the positioning semi-rings. The outer wall of the limiting semi-ring is arranged within the arc-shaped limiting notches. The second-level ball heads are arranged in a circumferential array within the arc-shaped limiting notches, and the second-level ball heads are connected to the positioning semi-rings. The second-level ball heads are symmetrically arranged above and below both sides of the limiting semi-ring. The fixing plates are symmetrically arranged in front and behind both sides of the transmission rod, and the bottom surface of the fixing plates is in contact with the two positioning semi-rings. The fixing plates are fixedly connected to the two positioning semi-rings through positioning bolts. The limiting semi-ring is located between the second-level ball heads arranged in an up-and-down array within the arc-shaped limiting notches, and the fixing plates are used to connect and fix the two positioning semi-rings; The inner wall of the positioning semi-ring is in contact with the first-level ball head.

[0007] Preferably, the positioning module further includes a counterweight ring and rollers. The counterweight ring is connected to the top of the positioning semi-ring on the right side. The rollers are connected to the outer wall of the positioning semi-ring in a circumferential array. During drilling, the vertically arranged rollers on the wheels contact the well wall. Through the lateral friction between the multiple wheels and the well wall, and in cooperation with the first-level ball heads and the second-level ball heads, the positioning semi-ring will not rotate with the rotation of the assembly semi-ring, but it will not affect the positioning semi-ring's lifting and lowering along with the assembly semi-ring, the transmission rod, and the drill bit. The setting of the counterweight ring balances the self-weight of the detection module on the positioning module.

[0008] Preferably, the detection module further includes a bottom shell, a shock-absorbing structure, a top shell, and a mounting ring. The bottom shell is disposed at the top of the positioning module. The shock-absorbing structure is connected to the bottom of the bottom shell in a circumferential array. The top shell is disposed on the top of the bottom shell. The mounting ring is connected to the bottom of the outer wall of the top shell. The bottom surface of the mounting ring is in contact with the bottom shell, and the mounting ring is fixedly connected to the bottom shell through positioning bolts, ensuring the rotation effect of the linkage rod and facilitating the disassembly and assembly between the bottom shell and the top shell, so that personnel can better pick up and place the fitting paper. The bottom surface of the inner cavity of the bottom shell and the inner cavity of the top shell are both spherical structures.

[0009] Preferably, the bottom shell is disposed at the top of the left positioning semi-ring. The shock-absorbing structure includes a base, a shock-absorbing spring, a support round rod, and a sleeve. The base is connected to the bottom of the bottom shell and is fixedly connected to the positioning semi-ring through positioning bolts. The shock-absorbing spring is connected to the top of the base. The support round rod is connected to the top of the shock-absorbing spring, and the top of the support round rod is connected to the bottom shell. The sleeve is sleeved outside the shock-absorbing spring and the support round rod. The inner wall of the sleeve is in sliding fit with the outer wall of the support round rod, and the bottom of the sleeve is connected to the base. Through the shock-absorbing spring, the influence of the vibration generated during the use of the drill bit and the transmission rod on the linkage rod is reduced.

[0010] Preferably, the peripheral cover is disposed in the middle of the bottom of the inner cavity of the bottom shell. The branch rods are connected to the outer wall of the peripheral cover in a circumferential array, and the ends of the branch rods away from the peripheral cover are connected to the bottom shell. The connecting plates are symmetrically connected to both sides of the ends of the branch rods away from the peripheral cover. The connecting plates are in contact with the bottom shell, and the connecting plates are fixedly connected to the bottom shell through positioning bolts, facilitating the disassembly and assembly of the peripheral cover in the bottom shell. The connecting round hole is located at the center of the spherical structures of the bottom surface of the inner cavity of the bottom shell and the inner cavity of the top shell. The inner cavity of the peripheral cover is a spherical structure. The peripheral cover is symmetrically connected with blocking ring parts up and down to block and limit the circular plate, so that the circular plate can be flipped within a certain range.

[0011] Preferably, the equipment notch is opened in the middle of the top surface of the inner cavity of the top shell. The contact switch is embedded in the equipment notch. The fitting paper is disposed on the bottom surface of the inner cavity of the bottom shell, and the bottom end of the pen tip is in contact with the fitting paper. The top end of the linkage rod is in contact with the contact switch. After the drill bit deviates from the vertical track during drilling, the drill bit drives the detection module on the positioning semi-ring to tilt. The top end of the linkage rod is separated from the contact switch, and the contact switch transmits the tilt signal to the peripheral terminal to remind the personnel. The vertical pen tip indicates the tilt direction of the drill bit on the tilted fitting paper in the form of a line, facilitating the personnel to understand the tilt direction, thereby realizing the level measurement warning during drill bit drilling.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: When the present invention is in use, the assembly module is installed on the outer wall of the transmission rod, so that the assembly module rotates with the rotation of the transmission rod. Through the rollers vertically arranged on the wheels, when drilling a well, the wheels contact the well wall. Through the lateral friction between multiple wheels and the well wall, and in cooperation with the first ball head and the second ball head, the positioning half-ring will not rotate with the rotation of the assembly half-ring, but it will not affect the positioning half-ring to rise and fall with the assembly half-ring, the transmission rod and the drill bit. After the drill bit deviates from the vertical track during well drilling, the drill bit drives the detection module on the positioning half-ring to tilt. The part of the linkage rod below the circular plate is longer than the part above the circular plate, so that the linkage rod always remains vertical. When the drill bit tilts, the peripheral cover moves synchronously with the bottom shell and the top shell and the drill bit under the connection of the branch rod, while the circular plate will slide on the spherical structure in the peripheral cover to keep the circular plate horizontal, and the linkage rod and the pen tip remain vertical. The top of the linkage rod is separated from the contact switch. When separated, the contact switch transmits the tilt signal to the peripheral terminal to remind the personnel. The vertical pen tip indicates the tilt direction of the drill bit in the form of a line on the tilted fitting paper, which is convenient for the personnel to understand the tilt direction, so as to realize the level measurement during well drilling by the drill bit. Through the shock-absorbing spring in the shock-absorbing structure, the impact of the vibration generated during the use of the drill bit and the transmission rod on the linkage rod is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a geothermal well drilling warning and detection device.

[0014] Figure 2 It is a schematic diagram of the positioning half-ring of a geothermal well drilling warning and detection device.

[0015] Figure 3 It is a schematic diagram of the assembly half-ring of a geothermal well drilling warning and detection device.

[0016] Figure 4 It is a schematic diagram of the bottom shell of a geothermal well drilling warning and detection device.

[0017] Figure 5 It is a schematic diagram of the internal structure of the bottom shell of a geothermal well drilling warning and detection device.

[0018] Figure 6 It is a schematic diagram of the internal structure of the peripheral cover of a geothermal well drilling warning and detection device.

[0019] Figure 7 It is a schematic diagram of the equipment notch of a geothermal well drilling warning and detection device.

[0020] In the figure: 1. Drill bit; 2. Transmission rod; 3. Assembly module; 31. Assembly semi-ring; 32. Fixed semi-ring; 33. Limit semi-ring; 34. Circular rod; 35. First-level ball head; 4. Positioning module; 41. Positioning semi-ring; 42. Arc-shaped limit notch; 43. Second-level ball head; 44. Fixed plate; 45. Counterweight ring; 46. Roller; 5. Detection module; 51. Bottom housing; 52. Shock-absorbing structure; 521. Base; 522. Shock-absorbing spring; 523. Support round rod; 524. Sleeve; 53. Top housing; 54. Mounting ring; 55. Peripheral housing; 56. Circular plate; 57. Connecting round hole; 58. Branch rod; 59. Connecting plate; 510. Blocking ring; 511. Equipment notch; 512. Contact switch; 513. Linking rod; 514. Pen tip; 515. Fitting paper. Detailed implementation mode

[0021] Embodiment 1 Please refer to Figures 1-7 As shown in the figure, a geothermal drilling warning and detection device includes a drill bit 1 and a transmission rod 2. The transmission rod 2 is connected to the top end of the drill bit 1. An assembly module 3 is provided on the outer wall of the transmission rod 2. A positioning module 4 is provided outside the assembly module 3. A detection module 5 is provided on the positioning module 4. The detection module 5 includes a peripheral housing 55, a circular plate 56, a connecting round hole 57, a branch rod 58, a connecting plate 59, an equipment notch 511, a contact switch 512, a linking rod 513, a pen tip 514 and a fitting paper 515. The circular plate 56 is slidably fitted in the peripheral housing 55. The connecting round hole 57 is opened in the middle of the circular plate 56 and penetrates through the circular plate 56 vertically. The linking rod 513 is provided in the connecting round hole 57 and penetrates through the connecting round hole 57 vertically. The pen tip 514 is connected to the bottom end of the linking rod 513. After the drill bit 1 deviates from the vertical track during drilling, the detection module 5 on the positioning semi-ring 41 is tilted along with the drill bit 1. The part of the linking rod 513 below the circular plate 56 is longer than the part above the circular plate 56, so that the linking rod 513 is always vertical.

[0022] Refer to Figures 1-3As shown in the figure, the assembly module 3 includes an assembly semi-ring 31, a fixed semi-ring 32, a limit semi-ring 33, a circular rod 34 and a first-level ball head 35. The assembly semi-ring 31 is symmetrically arranged on the outer wall of the transmission rod 2 from left to right. The fixed semi-ring 32 is connected to the top of the assembly semi-ring 31, and the inner wall of the fixed semi-ring 32 is in contact with the outer wall of the transmission rod 2. The fixed semi-ring 32 is fixedly connected to the transmission rod 2 through positioning bolts. The limit semi-ring 33 is connected to the middle of the outer wall of the assembly semi-ring 31. The circular rods 34 are circumferentially and arrayedly connected to the upper and lower sides of the outer wall of the assembly semi-ring 31. The first-level ball head 35 is arranged in the middle of the end of the circular rod 34 far from the assembly semi-ring 31. The assembly semi-ring 31 is symmetrically arranged on the outer wall of the transmission rod 2 from left to right, and the fixed semi-ring 32 and the transmission rod 2 are connected and fixed through positioning bolts. Then, two positioning semi-rings 41 are respectively arranged on the outer sides of the two assembly semi-rings 31. At the same time, the limit semi-ring 33 is located between the second-level ball heads 43 arranged in an up-and-down array in the arc-shaped limit notch 42. The circular rod 34 and the first-level ball head 35 provide a certain limiting effect to prevent the positioning semi-ring 41 from contacting the assembly semi-ring 31 and the limit semi-ring 33.

[0023] Reference Figures 1-3 As shown in the figure, the positioning module 4 includes positioning semi-rings 41, arc-shaped limit notches 42, second-level ball heads 43 and fixing plate members 44. The positioning semi-rings 41 are symmetrically arranged on both sides of the transmission rod 2 from left to right, and the positioning semi-rings 41 are located outside the assembly semi-ring 31. The arc-shaped limit notch 42 is opened in the middle of the inner wall of the positioning semi-ring 41. The outer wall of the limit semi-ring 33 is arranged in the arc-shaped limit notch 42. The second-level ball heads 43 are circumferentially and arrayedly arranged in the arc-shaped limit notch 42, and the second-level ball heads 43 are connected to the positioning semi-ring 41. The second-level ball heads 43 are symmetrically arranged on both sides of the limit semi-ring 33 from top to bottom. The fixing plate members 44 are symmetrically arranged on both sides of the transmission rod 2 from front to back, and the bottom surface of the fixing plate members 44 is in contact with the two positioning semi-rings 41. The fixing plate members 44 are fixedly connected to the two positioning semi-rings 41 through positioning bolts. The limit semi-ring 33 is located between the second-level ball heads 43 arranged in an up-and-down array in the arc-shaped limit notch 42, and the fixing plate members 44 are used to connect and fix the two positioning semi-rings 41; The inner wall of the positioning semi-ring 41 is in contact with the first-level ball head 35.

[0024] Reference Figures 1-3 As shown in the figure, the positioning module 4 further includes a counterweight ring 45 and rollers 46. The counterweight ring 45 is connected to the top of the positioning semi-ring 41 on the right side. The rollers 46 are circumferentially and arrayedly connected to the outer wall of the positioning semi-ring 41. During drilling, the vertically arranged rollers 46 come into contact with the well wall. Through the lateral friction between multiple rollers and the well wall, and in cooperation with the first-level ball head 35 and the second-level ball heads 43, the positioning semi-ring 41 will not rotate with the rotation of the assembly semi-ring 31, but it will not affect the lifting and lowering of the positioning semi-ring 41 along with the assembly semi-ring 31, the transmission rod 2 and the drill bit 1. The setting of the counterweight ring 45 balances the self-weight of the detection module 5 on the positioning module 4.

[0025] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown in Figure 5 , Figure 7 , the detection module 5 further includes a bottom housing 51, a shock absorption structure 52, a top housing 53 and a mounting ring 54. The bottom housing 51 is provided at the top of the positioning module 4. The shock absorption structure 52 is circumferentially and arrayedly connected to the bottom of the bottom housing 51. The top housing 53 is provided on the top of the bottom housing 51. The mounting ring 54 is connected to the bottom of the outer wall of the top housing 53. The bottom surface of the mounting ring 54 is in contact with the bottom housing 51, and the mounting ring 54 is fixedly connected to the bottom housing 51 through positioning bolts, ensuring the rotation effect of the linkage rod 513 and facilitating the disassembly and assembly between the bottom housing 51 and the top housing 53, so that personnel can better pick up and place the bonding paper 515; The bottom surface of the inner cavity of the bottom housing 51 and the inner cavity of the top housing 53 are both spherical structures.

[0026] Reference Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 As shown in Figure 4 , Figure 5 , Figure 7 , the bottom housing 51 is provided at the top of the left positioning semi-ring 41. The shock absorption structure 52 includes a base 521, a shock absorption spring 522, a support round rod 523 and a sleeve 524. The base 521 is connected to the bottom of the bottom housing 51, and the base 521 is fixedly connected to the positioning semi-ring 41 through positioning bolts. The shock absorption spring 522 is connected to the top of the base 521. The support round rod 523 is connected to the top of the shock absorption spring 522, and the top of the support round rod 523 is connected to the bottom housing 51. The sleeve 524 is sleeved outside the shock absorption spring 522 and the support round rod 523. The inner wall of the sleeve 524 is in sliding fit with the outer wall of the support round rod 523, and the bottom end of the sleeve 524 is connected to the base 521. Through the shock absorption spring 522, the influence of the vibration generated during the use of the drill bit 1 and the transmission rod 2 on the linkage rod 513 is reduced.

[0027] Reference Figures 5-7 As shown in Figures 5-7 , the peripheral cover 55 is provided in the middle of the bottom end of the inner cavity of the bottom housing 51. The branch rods 58 are circumferentially and arrayedly connected to the outer wall of the peripheral cover 55, and the ends of the branch rods 58 away from the peripheral cover 55 are connected to the bottom housing 51. The connecting plates 59 are symmetrically connected to both sides of the ends of the branch rods 58 away from the peripheral cover 55. The connecting plates 59 are in contact with the bottom housing 51, and the connecting plates 59 are fixedly connected to the bottom housing 51 through positioning bolts, facilitating the disassembly and assembly of the peripheral cover 55 in the bottom housing 51; The connecting round hole 57 is located at the center of the spherical surfaces of the bottom surface of the inner cavity of the bottom housing 51 and the inner cavity of the top housing 53; The inner cavity of the peripheral housing 55 has a spherical structure; The peripheral housing 55 is symmetrically connected with a blocking ring member 510 up and down to block and limit the circular plate member 56, so that the circular plate member 56 can be turned within a certain range.

[0028] Reference Figures 5-7 As shown, the device notch 511 is opened in the middle of the top surface of the inner cavity of the top housing 53, the touch switch 512 is embedded in the device notch 511, the fitting paper 515 is arranged on the bottom surface of the inner cavity of the bottom housing 51, and the bottom end of the pen tip 514 is in contact with the fitting paper 515. The top end of the linkage rod 513 is in contact with the touch switch 512. After the drill bit 1 deviates from the vertical track during drilling, the drill bit 1 drives the detection module 5 on the positioning semi-ring 41 to tilt. The top end of the linkage rod 513 is separated from the touch switch 512. The touch switch 512 transmits the tilt signal to the peripheral terminal to remind the personnel. The vertical pen tip 514 indicates the tilt direction of the drill bit 1 on the tilted fitting paper 515 in the form of a line, which is convenient for the personnel to understand the tilt direction, so as to realize the level measurement warning during the drilling of the drill bit 1.

[0029] Working principle: The assembled half-rings 31 are symmetrically arranged on the outer wall of the transmission rod 2 in the left and right directions, and the fixed half-ring 32 and the transmission rod 2 are connected and fixed through positioning bolts. Then, two groups of positioning half-rings 41 are respectively arranged outside the two groups of assembled half-rings 31. At the same time, the limiting half-ring 33 is located between the vertically arrayed secondary ball heads 43 in the arc-shaped limiting notch 42, and a fixing plate member 44 is used to connect and fix the two groups of positioning half-rings 41. The assembly module 3 rotates with the rotation of the transmission rod 2. During drilling, the rollers 46 of the wheels are arranged vertically, and when the wheels contact the well wall, through the lateral friction between multiple wheels and the well wall, and in cooperation with the primary ball head 35 and the secondary ball head 43, the positioning half-ring 41 will not rotate with the rotation of the assembled half-ring 31, but it will not affect the lifting and lowering of the positioning half-ring 41 along with the assembled half-ring 31, the transmission rod 2, and the drill bit 1. After the drill bit 1 deviates from the vertical track during drilling, the drill bit 1 drives the detection module 5 on the positioning half-ring 41 to tilt. The part of the linkage rod 513 below the circular plate member 56 is longer than the part above the circular plate member 56, so that the linkage rod 513 is always vertical. When the drill bit 1 tilts, the peripheral housing 55 is connected by the branch rod 58 and tilts synchronously with the bottom housing 51 and the top housing 53 and the drill bit 1. However, the circular plate member 56 will slide on the spherical structure in the peripheral housing 55 to keep the circular plate member 56 horizontal, while the linkage rod 513 and the pen tip 514 remain vertical. The top end of the linkage rod 513 is separated from the contact switch 512. When separated, the contact switch 512 transmits the tilt signal to the peripheral terminal to remind the personnel, preventing the drill bit 1 from being separated from the vertical track for a long time and causing the failure of the drilling project. The vertical pen tip 514 indicates the tilt direction of the drill bit 1 on the tilted fitting paper 515 in the form of a line, facilitating the personnel to understand the tilt direction, thereby realizing the level measurement during the drilling of the drill bit 1. Through the shock-absorbing spring 522, the impact of the vibration generated during the use of the drill bit 1 and the transmission rod 2 on the linkage rod 513 is reduced.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A geothermal drilling early warning detection device, comprising a drill bit (1) and a transmission rod (2), characterized in that: The transmission rod (2) is connected to the top end of the drill bit (1); an assembly module (3) is provided on the outer wall of the transmission rod (2); a positioning module (4) is provided on the outer side of the assembly module (3); and a detection module (5) is provided on the positioning module (4); The detection module (5) comprises an external device cover (55), a circular plate (56), a connecting circular hole (57), a branch rod (58), a connecting plate (59), a device slot (511), a contact switch (512), a linkage rod (513), a pen tip (514) and a bonding paper (515); the circular plate (56) is slidably matched in the external device cover (55); the connecting circular hole (57) is provided in the middle of the circular plate (56), and the connecting circular hole (57) passes through the circular plate (56) from top to bottom; the linkage rod (513) is provided in the connecting circular hole (57), and the linkage rod (513) passes through the connecting circular hole (57) from top to bottom; and the pen tip (514) is connected to the bottom end of the linkage rod (513).

2. A geothermal drilling early warning detection device according to claim 1, characterized in that: The assembly module (3) comprises an assembly semi-ring (31), a fixed semi-ring (32), a limiting semi-ring (33), a circular rod (34) and a primary ball head (35); the assembly semi-ring (31) is symmetrically arranged on the outer wall of the transmission rod (2); the fixed semi-ring (32) is connected to the top of the assembly semi-ring (31), and the inner wall of the fixed semi-ring (32) is in contact with the outer wall of the transmission rod (2); the fixed semi-ring (32) is fixedly connected to the transmission rod (2) by means of positioning bolts; the limiting semi-ring (33) is connected to the middle of the outer wall of the assembly semi-ring (31); the circular rods (34) are connected in a circumferential array to the upper side and the lower side of the outer wall of the assembly semi-ring (31); and the primary ball head (35) is arranged at the middle of one end of the circular rod (34) away from the assembly semi-ring (31).

3. A geothermal drilling early warning detection device according to claim 2, characterized in that: The positioning module (4) comprises a positioning semi-ring (41), an arc-shaped limiting notch (42), a secondary ball head (43) and a fixing plate (44); the positioning semi-ring (41) is symmetrically arranged on both sides of the transmission rod (2), and the positioning semi-ring (41) is located outside the assembly semi-ring (31); the arc-shaped limiting notch (42) is opened in the middle of the inner wall of the positioning semi-ring (41); the outer wall of the limiting semi-ring (33) is arranged in the arc-shaped limiting notch (42); the secondary ball head The circular array (43) is arranged in the arc-shaped limiting groove (42), and the secondary ball head (43) is connected to the positioning semi-ring (41), the secondary ball head (43) is symmetrically arranged on both sides of the limiting semi-ring (33) in the upper and lower directions, the fixed plate (44) is symmetrically arranged on both sides of the transmission rod (2) in the front and rear directions, and the bottom surface of the fixed plate (44) is in contact with the two groups of positioning semi-rings (41), and the fixed plate (44) is fixedly connected to the two groups of positioning semi-rings (41) by positioning bolts; The inner wall of the positioning semi-ring (41) is fitted with the primary ball head (35).

4. A geothermal drilling early warning detection device according to claim 3, characterized in that: The positioning module (4) further comprises a counterweight ring (45) and rollers (46); the counterweight ring (45) is connected to the top end of the positioning semi-ring (41) located on the right side; and the rollers (46) are connected to the outer wall of the positioning semi-ring (41) in a circular array.

5. The geothermal drilling early warning detection device according to claim 1, characterized in that: The detection module (5) further comprises a bottom shell (51), a shock absorbing structure (52), a top shell (53) and a mounting ring (54); the bottom shell (51) is arranged at the top of the positioning module (4); the shock absorbing structure (52) is connected to the bottom of the bottom shell (51) in a circumferential array; the top shell (53) is arranged at the top of the bottom shell (51); the mounting ring (54) is connected to the bottom of the outer wall of the top shell (53); the bottom surface of the mounting ring (54) is in contact with the bottom shell (51); and the mounting ring (54) is fixedly connected to the bottom shell (51) via positioning bolts; The bottom surface of the inner cavity of the bottom shell (51) and the inner cavity of the top shell (53) are both spherical structures.

6. A geothermal drilling early warning detection device according to claim 3 or 5, characterized in that: The bottom shell (51) is arranged at the top of the positioning half ring (41) located on the left side. The shock absorbing structure (52) comprises a base (521), a shock absorbing spring (522), a supporting round rod (523) and a sleeve (524). The base (521) is connected to the bottom of the bottom shell (51), and the base (521) is fixedly connected to the positioning half ring (41) via a positioning bolt. The shock absorbing spring (522) is connected to the top of the base (521). The supporting round rod (523) is connected to the top of the shock absorbing spring (522), and the top of the supporting round rod (523) is connected to the bottom shell (51). The sleeve is sleeved on the outside of the shock absorbing spring and the supporting round rod. The inner wall of the sleeve is slidably matched with the outer wall of the supporting round rod, and the bottom end of the sleeve is connected to the base.

7. A geothermal drilling early warning detection device according to claim 5, characterized in that: The external cover body (55) is arranged at the middle of the bottom end of the inner cavity of the bottom shell (51); the branch rods (58) are connected to the outer wall of the external cover body (55) in a circumferential array; one end of the branch rods (58) away from the external cover body (55) is connected to the bottom shell (51); the connecting plate (59) is symmetrically connected to both sides of the end of the branch rods (58) away from the external cover body (55); the connecting plate (59) is fitted with the bottom shell (51), and the connecting plate (59) is fixedly connected to the bottom shell (51) by means of positioning bolts; The connecting circular hole (57) is located at the bottom surface of the inner cavity of the bottom shell (51) and at the center of the spherical surface structure of the inner cavity of the top shell (53); The inner cavity of the external cover body (55) is a spherical structure; The external cover body (55) is symmetrically connected to a blocking ring (510) up and down.

8. A geothermal drilling early warning detection device according to claim 5, characterized in that: The device slot (511) is provided in the middle of the top surface of the inner cavity of the top housing (53); the contact switch (512) is embedded in the device slot (511); the bonding paper (515) is provided on the bottom surface of the inner cavity of the bottom housing (51); the bottom end of the pen tip (514) contacts the bonding paper (515); and the top end of the linkage rod (513) is bonded to the contact switch (512).

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