Connecting and sealing structure for drill rod of long spiral drilling machine

Abstract

The utility model discloses a long spiral drilling machine drill rod connecting and sealing structure which comprises drill rod bodies and further comprises a connecting mechanism, the connecting mechanism comprises a connecting sleeve, a supporting ring is fixedly installed in the middle of the inner side of the connecting sleeve, and a plurality of connecting bolts are arranged between the connecting position of the two drill rod bodies and the supporting ring. Fixing seats are fixedly mounted at the tops and the bottoms of the outer walls of the two sides of the connecting sleeve; the sealing mechanism comprises two first sealing plates and two second sealing plates, the two first sealing plates are rotationally installed on the outer sides of the two fixing bases on one side respectively, the two second sealing plates are rotationally installed on the outer sides of the two fixing bases on the other side respectively, and fixing pins are arranged on the inner walls of the two ends of the positions, connected with the adjacent second sealing plates, of the first sealing plates respectively. Supporting pads are fixedly installed on the opposite sides of the two first sealing plates and the opposite sides of the two second sealing plates. The problems that in the prior art, a gap of the connecting position of the two drill rods is prone to being blocked by soil, and connecting bolts are prone to rusting are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling equipment and relates to a long spiral drilling rig drill rod connection sealing structure. Background Art

[0002] When a long spiral drilling machine is used, in order to increase the length of the drill bit, multiple drill bits are usually connected in series to meet the drilling depth requirements. In the process of connection, there are usually certain requirements for the sealing performance of the connection. In the Chinese utility model with the publication number CN208966212U, a long spiral drilling machine drill rod connection sealing structure is disclosed, including a drill rod, flanges are symmetrically arranged at both ends of the drill rod, and the inner side of the flange is respectively connected to the first and second spacing cone sleeves corresponding to the two ends of the drill rod, and the adjacent drill rods are fixedly connected by flanges, and the contact part of the flange is provided with a keyway, and a key is provided in the keyway. When the long spiral drilling machine drill rod connection sealing structure is connected, the flange of a drill rod welded with the first spacing cone sleeve is fixedly connected with the flange of an adjacent drill rod welded with the second spacing cone sleeve by bolts, and the end of the first spacing cone sleeve is inserted into the second spacing cone sleeve. The first spacing cone sleeve and the second spacing cone sleeve in the long spiral drilling machine drill rod connection sealing structure cooperate with each other, so that the self-centering property of the drill rod is good, the straightness of the connected drill rod is high, and the sealing property is particularly good, which is convenient for later use.

[0003] The prior art has the following deficiencies: during the connection process of the drill rods for the existing long spiral drilling rigs, the outer sides of the joint positions of the two drill rods cannot be well sealed and protected, so that mud can easily clog the gap between the two drill rod connection positions. At the same time, the bolts used to connect the drill rods are directly exposed to the outside and are prone to rust, making it difficult to conveniently install and disassemble the connecting bolts, which affects the efficiency of drill rod splicing and disassembly. Summary of the invention

[0004] In order to achieve the above-mentioned purpose, the utility model provides a long spiral drilling rig drill rod connection sealing structure, which solves the problems in the prior art that mud is easy to block the gap between the two drill rod connection positions and the connection bolts are easy to rust.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is a long spiral drilling rig drill rod connection sealing structure, including a drill rod body, and also including: a connecting mechanism, the connecting mechanism includes a connecting sleeve, a support ring is fixedly installed at the inner middle position of the connecting sleeve, a plurality of connecting bolts are arranged between the position where the two drill rod bodies are connected and the support ring, and the top and bottom of the outer walls on both sides of the connecting sleeve are fixedly installed with fixed seats; the sealing mechanism includes two first sealing plates and two second sealing plates, the two first sealing plates are respectively rotatably installed on the outside of the two fixed seats on one side, and the two second sealing plates are respectively rotatably installed on the outside of the two fixed seats on the other side, fixing pins are arranged on the inner walls at both ends of the position where the first sealing plate is connected to the adjacent second sealing plate, and support pads are fixedly installed on the opposite side of the two first sealing plates and the opposite side of the two second sealing plates.

[0006] Furthermore, the drill rod body includes a spiral rod body, and the opposite ends of two adjacent spiral rod bodies are fixedly installed with connecting flanges, the inner wall of the support ring is provided with multiple connecting holes, and the inner wall holes of the two connecting flanges are aligned with the connecting holes.

[0007] Furthermore, the holes on the inner walls of the two connecting flanges facing each other are respectively threadedly connected to the outer walls of the connecting bolts, and the outer walls of the connecting bolts are threadedly connected to the inner walls of the adjacent connecting holes.

[0008] Furthermore, connecting grooves are provided at both ends of the first sealing plate on one side close to the second sealing plate, and lap plates are fixedly installed at both ends of the second sealing plate on one side close to the first sealing plate, and the inner wall of the connecting groove is movably connected to the adjacent lap plates.

[0009] Furthermore, the inner wall of the lap plate is threadedly connected to the outer wall of an adjacent fixing pin, and one end of the fixing pin away from the lap plate is threadedly connected to the inner wall of an adjacent connecting groove.

[0010] Furthermore, the outer diameter of the support ring is the same as the outer diameter of the connecting flange, the inner diameter of the support ring is the same as the inner diameter of the connecting flange, and the inner diameter of the connecting sleeve is the same as the outer diameter of the connecting flange.

[0011] Furthermore, the top-view cross-sectional area dimensions of the first sealing plate and the second sealing plate are larger than the top-view cross-sectional area dimensions of the gap between the spiral rod body and the connecting sleeve, and the plurality of support pads are respectively arranged in the gaps between two adjacent connecting bolts.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model can seal the gap between the connecting sleeve and the outer wall of the spiral rod body through the first sealing plate and the second sealing plate, and can protect the connecting bolts at the same time, so that the connecting mechanism can stably connect the two drill rod bodies and improve the sealing effect of the connection position of the two drill rod bodies.

[0014] 2. The utility model supports the first sealing plate and the second sealing plate by means of the support pad, thereby preventing the first sealing plate and the second sealing plate from being sunken toward the inner side of the connecting sleeve due to external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the drill rod connection sealing structure of an embodiment of the utility model.

[0017] Figure 2 It is a sectional view of the overall structure of the drill pipe connection sealing structure of an embodiment of the utility model.

[0018] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 It is a three-dimensional structural diagram of a drill rod body according to an embodiment of the utility model.

[0020] Figure 5 It is a three-dimensional structure explosion diagram of the connecting mechanism and the sealing mechanism of the embodiment of the utility model.

[0021] In the figure, 1. drill pipe body, 101. spiral rod body, 102. connecting flange, 2. connecting mechanism, 201. connecting casing, 202. supporting ring, 203. connecting hole, 204. connecting bolt, 205. fixing seat, 3. sealing mechanism, 301. first sealing plate, 302. connecting groove, 303. second sealing plate, 304. lap plate, 305. fixing pin, 306. supporting pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1~Figure 5 As shown, the utility model provides a long spiral drilling rig drill rod connection sealing structure, including a drill rod body 1, and also includes: a connecting mechanism 2, which is arranged at the position where two drill rod bodies 1 are connected, and is used to connect and fix the two drill rod bodies 1; a sealing mechanism 3, which is arranged at the openings at the top and bottom of the connecting mechanism 2, and is used to seal the top and bottom openings of the connecting mechanism 2.

[0024] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, the connecting mechanism 2 includes a connecting sleeve 201, a support ring 202 is fixedly installed at the inner middle position of the connecting sleeve 201, a plurality of connecting bolts 204 are arranged between the position where the two drill pipe bodies 1 are connected and the support ring 202, and fixing seats 205 are fixedly installed on the top and bottom of the outer walls on both sides of the connecting sleeve 201. The connecting bolt 204 passes through the connecting flange 102 of one of the drill pipe bodies 1 and then passes through the support ring 202 and is threadedly connected to the inner wall of the connecting flange 102 of the other drill pipe body 1, so that the connecting mechanism 2 can stably connect and fix the two drill pipe bodies 1.

[0025] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, the sealing mechanism 3 includes two first sealing plates 301 and two second sealing plates 303. The two first sealing plates 301 are respectively rotatably installed on the outside of the two fixed seats 205 on one side, and the two second sealing plates 303 are respectively rotatably installed on the outside of the two fixed seats 205 on the other side. Fixing pins 305 are provided on the inner walls at both ends of the position where the first sealing plates 301 are connected to the adjacent second sealing plates 303. Support pads 306 are fixedly installed on the opposite sides of the two first sealing plates 301 and the opposite sides of the two second sealing plates 303. The top and bottom openings of the connecting sleeve 201 can be sealed through the connection between the first sealing plates 301 and the adjacent second sealing plates 303.

[0026] In some embodiments, Figure 2~Figure 4As shown, the drill pipe body 1 includes a spiral rod body 101, and the opposite ends of two adjacent spiral rod bodies 101 are fixedly installed with connecting flanges 102. The inner wall of the support ring 202 is provided with multiple connecting holes 203. The inner wall holes of the two connecting flanges 102 are aligned with the connecting holes 203. The opposite holes on the inner walls of the two connecting flanges 102 are respectively threadedly connected to the outer walls of the connecting bolts 204, and the outer walls of the connecting bolts 204 are threadedly connected to the inner walls of the adjacent connecting holes 203. The connecting bolts 204 pass through the inner wall of one of the connecting flanges 102 and the inner wall of the connecting hole 203 and are threadedly connected to the inner wall of the other connecting flange 102, so that the connecting mechanism 2 can stably connect the two drill pipe bodies 1.

[0027] In some embodiments, Figure 2 , Figure 3 and Figure 5 As shown, connecting grooves 302 are provided at both ends of the first sealing plate 301 on one side close to the second sealing plate 303, and lap plates 304 are fixedly installed at both ends of the second sealing plate 303 on one side close to the first sealing plate 301, and the inner wall of the connecting groove 302 is movably connected to the adjacent lap plate 304; the inner wall of the lap plate 304 is threadedly connected to the outer wall of the adjacent fixing pin 305, and the end of the fixing pin 305 away from the lap plate 304 is threadedly connected to the inner wall of the adjacent connecting groove 302; the fixing pin 305 can pass through the lap plate 304 and be connected to the inner wall of the adjacent connecting groove 302, so that the first sealing plate 301 and the second sealing plate 303 can be tightly connected, and then the first sealing plate 301 and the second sealing plate 303 can stably seal the opening of the connecting sleeve 201.

[0028] In order to ensure that the connecting mechanism 2 and the sealing mechanism 3 can stably connect and seal the drill pipe body 1, as shown in FIG. Figure 2 , Figure 3 and Figure 5 As shown, the outer diameter of the support ring 202 is the same as the outer diameter of the connecting flange 102, the inner diameter of the support ring 202 is the same as the inner diameter of the connecting flange 102, the inner diameter of the connecting sleeve 201 is the same as the outer diameter of the connecting flange 102, the top view cross-sectional area of ​​the first sealing plate 301 and the second sealing plate 303 is larger than the top view cross-sectional area of ​​the gap between the spiral rod body 101 and the connecting sleeve 201, and a plurality of support pads 306 are respectively arranged in the gap between two adjacent connecting bolts 204, the support ring 202 can support and seal the two connecting flanges 102, and the first sealing plate 301 and the second sealing plate 303 can seal the gap between the connecting sleeve 201 and the outer wall of the spiral rod body 101.

[0029] The method of using the utility model is:

[0030] When using a long spiral drilling rig, it is necessary to splice multiple drill rod bodies 1, and the connecting flanges 102 of the two spiral rod bodies 101 are opposite to each other, and then the connecting mechanism 2 is set between the two connecting flanges 102 so that the upper and lower outer walls of the support ring 202 are respectively in contact with the two connecting flanges 102, and the holes on the inner walls of the connecting flanges 102 are aligned with the connecting holes 203; then use the connecting bolts 204 to penetrate the inner wall of one of the connecting flanges 102 and the inner wall of the connecting hole 203 and threadedly connect with the inner wall of the other connecting flange 102, so that the connecting mechanism 2 can connect the two spiral rod bodies 101; then rotate the two first sealing plates 301 to rotate them from a vertical state to a horizontal state, so that the two first sealing plates 301 respectively seal one side of the top and bottom openings of the connecting sleeve 201; then rotate the two second sealing plates 303 to rotate them from a vertical state to a horizontal state. The two second sealing plates 303 can respectively seal the other side of the top and bottom openings of the connecting sleeve 201, so that the two lap plates 304 at the same height can be movably connected to the inner walls of the two connecting grooves 302 respectively; then the fixing pins 305 are used to penetrate the inner walls of the adjacent lap plates 304 and are threadedly connected to the inner walls of the adjacent connecting grooves 302, so that the first sealing plate 301 and the second sealing plate 303 can be tightly connected, so that the first sealing plate 301 and the second sealing plate 303 at the same height can stably seal the openings at the top and bottom of the connecting sleeve 201; at the same time, the support pads 306 on the inner sides of the first sealing plate 301 and the second sealing plate 303 can be in the gap between the two adjacent connecting bolts 204, so that the connection and fixation of the drill pipe body 1 are more stable and firm. This embodiment specifically solves the problem of poor sealing effect at the drill pipe connection of long spiral drilling rigs in the prior art.

[0031] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A long spiral drilling rig drill pipe connection sealing structure, comprising a drill pipe body (1), It is characterized in that Also includes: A connecting mechanism (2), the connecting mechanism (2) comprising a connecting sleeve (201), a support ring (202) being fixedly mounted at the middle position of the inner side of the connecting sleeve (201), a plurality of connecting bolts (204) being arranged between the support ring (202) and the position where the two drill pipe bodies (1) are connected, and a fixing seat (205) being fixedly mounted at the top and bottom of the outer walls on both sides of the connecting sleeve (201); the sealing mechanism (3) comprising two first sealing plates (301) and two second sealing plates (303) The two first sealing plates (301) are respectively rotatably mounted on the outside of the two fixed seats (205) on one side, and the two second sealing plates (303) are respectively rotatably mounted on the outside of the two fixed seats (205) on the other side. The inner walls at both ends of the position where the first sealing plates (301) are connected to the adjacent second sealing plates (303) are provided with fixing pins (305), and the opposite sides of the two first sealing plates (301) and the opposite sides of the two second sealing plates (303) are fixedly mounted with support pads (306).

2. A long spiral drilling rig drill rod connection sealing structure according to claim 1, Features: The drill rod body (1) comprises a screw rod body (101), and two adjacent screw rod bodies (101) are fixedly mounted with connecting flanges (102) at opposite ends thereof, and the inner wall of the support ring (202) is provided with a plurality of connecting holes (203), and the inner wall holes of the two connecting flanges (102) are aligned with the connecting holes (203).

3. A long spiral drilling rig drill rod connection sealing structure according to claim 2, Features: The holes on the inner walls of the two connecting flanges (102) facing each other are respectively threadedly connected to the outer walls of the connecting bolts (204), and the outer walls of the connecting bolts (204) are threadedly connected to the inner walls of the adjacent connecting holes (203).

4. A long spiral drilling rig drill rod connection sealing structure according to claim 1, Features: Both ends of the first sealing plate (301) on a side close to the second sealing plate (303) are provided with connection grooves (302); both ends of the second sealing plate (303) on a side close to the first sealing plate (301) are fixedly mounted with lap plates (304); and the inner wall of the connection groove (302) is movably connected to an adjacent lap plate (304).

5. A long spiral drilling rig drill rod connection sealing structure according to claim 4, Features: The inner wall of the lap plate (304) is threadedly connected to the outer wall of an adjacent fixing pin (305), and one end of the fixing pin (305) away from the lap plate (304) is threadedly connected to the inner wall of an adjacent connecting groove (302).

6. A long spiral drilling rig drill rod connection sealing structure according to claim 2, Features: The outer diameter of the support ring (202) is the same as the outer diameter of the connecting flange (102), the inner diameter of the support ring (202) is the same as the inner diameter of the connecting flange (102), and the inner diameter of the connecting sleeve (201) is the same as the outer diameter of the connecting flange (102).

7. A long spiral drilling rig drill rod connection sealing structure according to claim 2, Features: The cross-sectional area dimensions of the first sealing plate (301) and the second sealing plate (303) when viewed from above are larger than the cross-sectional area dimensions of the gap between the spiral rod body (101) and the connecting sleeve (201) when viewed from above, and the plurality of support pads (306) are respectively arranged in the gap between two adjacent connecting bolts (204).

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