Pipeline connecting structure of drilling equipment

Abstract

The invention discloses a drilling equipment pipeline connecting structure, and relates to the technical field of drilling equipment pipeline connection, the drilling equipment pipeline connecting structure comprises a pipeline body, and further comprises connecting assemblies arranged at the two ends of the pipeline body and used for assisting installation and connection with the adjacent pipeline body. According to the drilling equipment pipeline, in the connecting process, the mounting sleeves and the connecting grooves on the two adjacent pipeline bodies are mounted and connected in a threaded mode, the connecting strength between the two pipeline bodies is guaranteed through the threaded connection mode, and in the connecting process, through transmission, the connecting efficiency is improved. And through the inserting connection effect of the inserting plates and the inserting grooves, the two sets of pipeline bodies in threaded connection are limited, the situation that the two sets of pipeline bodies rotate relatively due to the abutting friction effect between the two sets of pipeline bodies and the inner wall of an oil well after connection is avoided, and the stability of the two sets of drilling equipment pipelines after connection is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment pipeline connection, in particular to a drilling equipment pipeline connection structure. Background Art

[0002] The drilling equipment pipeline is the main channel for conveying media. Its inner diameter and outer diameter are determined according to factors such as the flow rate, pressure and material of the conveying medium. For example, for a high-flow drilling fluid pipeline, a larger inner diameter is required to reduce fluid resistance; and for a high-pressure gas pipeline, while ensuring the flow rate, more attention is paid to the wall thickness and strength of the pipeline to withstand high pressure.

[0003] In order to facilitate the use of drilling equipment pipelines in longer lengths, it is necessary to splice adjacent drilling equipment pipelines through a connecting structure, and the connecting structures of drilling equipment pipelines mainly include threaded connection, flange connection and clamping connection. The flange connection and clamping connection methods affect the use strength between the two connected sets of drilling equipment pipelines after connection, and although the threaded connection can ensure the use strength after connection, during the rotation of the drilling equipment pipeline, the friction between the drilling equipment pipeline wall and the inner wall of the oil well will cause relative rotation between the connected drilling equipment pipelines, affecting the stability of the two sets of drilling equipment pipelines after connection. For this reason, we propose a drilling equipment pipeline connection structure. Summary of the invention

[0004] The object of the present invention is to provide a drilling equipment pipeline connection structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a drilling equipment pipeline connection structure, including a pipeline body, and also including:

[0006] A connection component is arranged at both ends of the pipe body to assist in the installation and connection with adjacent pipe bodies. The connection component includes a mounting sleeve fixed to one end of the pipe body. A connecting groove is provided at the other end of the pipe body. The mounting sleeves and the connecting grooves of two adjacent groups of pipe bodies are installed and connected by threads. A limit component is arranged between the two adjacent groups of pipe bodies to prevent the two groups of pipe bodies from resetting and rotating after connection. A first sealing component and a second sealing component are arranged inside the connecting groove to seal after connection.

[0007] Preferably, the position limiting components are provided in a plurality of groups, and the plurality of position limiting components are arranged on the pipeline body in a state of an annular array.

[0008] Preferably, the limit assembly includes a slot opened on the outside of the end of the pipe body, and an installation slot is opened on the outside of the adjacent pipe body. The installation slot is provided with a plug plate for being plugged and connected to the slot, and the interior of the installation slot is provided with a connecting assembly for connecting the plug plate and an elastic assembly for elastically pushing the plug plate, and a blocking assembly for blocking the front end of the plug plate is provided on the pipe body.

[0009] Preferably, the sliding assembly comprises a sliding groove opened at the bottom of the installation groove, the interior of the sliding groove is slidably connected with a connecting plate, and the connecting plate is fixed to the plug plate.

[0010] Preferably, the elastic component includes multiple groups of mounting rods slidably connected to the connecting plate, the mounting rods are fixed inside the slide groove, and the outer side of each group of mounting rods is sleeved with an extrusion spring, and the two ends of the extrusion spring are respectively set against the inner wall of the slide groove and the connecting plate.

[0011] Preferably, the blocking assembly includes a square groove formed on the mounting sleeve, a baffle plate for resisting and blocking the front end of the plug plate is provided on the square groove, a telescopic assembly for telescopically connecting the baffle plate is provided between the square groove and the baffle plate, a bevel is provided on one side of the baffle plate, and an oblique chamfer is provided on the inner wall of the connecting groove on the adjacent pipe body for resisting and transmitting with the bevel.

[0012] Preferably, the telescopic assembly includes multiple groups of first sleeves fixed inside the square groove, each group of the first sleeves is slidably connected with a first sliding rod, one end of the first sliding rod is fixed to the baffle, and the outer side of each group of the first sleeves is sleeved with a first spring, and the two ends of the first spring are respectively connected to the inner wall of the square groove and the baffle.

[0013] Preferably, the first sealing assembly comprises a first annular groove opened inside the connecting groove, and a sealing gasket is installed inside the first annular groove for sealing against an end of a mounting sleeve on an adjacent pipe body.

[0014] Preferably, the second sealing assembly includes a second annular groove opened on the inner wall of the connecting groove, an annular sealing airbag is installed inside the second annular groove for sealing against the outer side of the mounting sleeve on the adjacent pipe body, and an inflation assembly is provided on the pipe body for inflating the inside of the annular sealing airbag.

[0015] Preferably, the inflation component comprises a piston tube fixed on the annular sealing airbag, a piston rod is slidably connected to the piston tube, one end of the piston rod is located inside the slot and fixed with a mounting plate, and a connecting component for connecting the mounting plate is provided between the mounting plate and the slot;

[0016] The connecting assembly includes multiple groups of second sleeves fixed inside the slots, the second sleeves are slidably connected with second slide bars, one end of the second slide bar is fixed to the mounting plate, and the outer side of each group of the second sleeves is sleeved with a second spring.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] During the connection process of the drilling equipment pipe of the present invention, the installation sleeves and connecting grooves on the two adjacent groups of pipe bodies are installed and connected in a threaded manner. The strength of the connection between the two groups of pipe bodies is ensured by the threaded connection. During the connection process, each group of plug plates is respectively inserted into the interior of each group of slots through transmission. The plug-in connection between the plug plates and the slots is used to limit the two groups of pipe bodies after the threaded connection, so as to avoid relative rotation of the two groups of pipe bodies due to the friction between the two groups of pipe bodies and the inner wall of the oil well after the connection, thereby ensuring the stability of the two groups of drilling equipment pipes after the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection groove structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the installation sleeve and the limiting assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the blocking component and the telescopic component of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the installation sleeve of the present invention;

[0024] Figure 6 It is a schematic diagram of the slots and the plugboard states after two sets of pipes of the present invention are installed;

[0025] Figure 7 It is a schematic diagram of the structure of the elastic component and the sliding component of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the second sealing component, the inflation component and the connection component of the present invention.

[0027] In the figure: 1, pipe body; 201, mounting sleeve; 202, connecting groove; 301, first annular groove; 302, sealing gasket; 401, slot; 402, mounting groove; 403, plug plate; 501, square groove; 502, baffle; 503, inclined surface; 504, oblique chamfer; 601, first sleeve; 602, first slide bar; 603, first spring; 701, slide groove; 702, connecting plate; 801, mounting rod; 802, extrusion spring; 901, piston tube; 902, piston rod; 903, mounting plate; 1001, second sleeve; 1002, second slide bar; 1003, second spring; 1101, second annular groove; 1102, annular sealing airbag. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example 1

[0030] See also Figure 1-Figure 8 The drilling equipment pipeline connection structure shown in the figure includes a pipeline body 1 and also includes:

[0031] A connection assembly is provided at both ends of the pipe body 1 for assisting installation and connection with adjacent pipe bodies 1, the connection assembly includes a mounting sleeve 201 fixed to one end of the pipe body 1, a connecting groove 202 is provided at the other end of the pipe body 1, the mounting sleeves 201 of two adjacent groups of pipe bodies 1 are installed and connected with the connecting groove 202 by means of threads, a limit assembly is provided between the two adjacent groups of pipe bodies 1 for preventing the two groups of pipe bodies 1 from resetting and rotating after connection, and a first sealing assembly and a second sealing assembly are provided inside the connecting groove 202 for sealing after connection;

[0032] It should be noted here that: during the connection process of the drilling equipment pipeline, the mounting sleeves 201 and the connecting grooves 202 on the two adjacent groups of pipeline bodies 1 are installed and connected in a threaded manner. The strength of the connection between the two groups of pipeline bodies 1 is ensured by the threaded connection. During the connection process, each group of plug plates 403 is respectively inserted into the interior of each group of slots 401 through transmission. Through the plug-in connection between the plug plates 403 and the slots 401, the two groups of pipeline bodies 1 after the threaded connection are limited to avoid relative rotation of the two groups of pipeline bodies 1 due to the friction against the inner wall of the oil well after the connection, thereby ensuring the stability of the two groups of drilling equipment pipelines after the connection.

[0033] Preferably, there are multiple groups of limiter components, and the multiple groups of limiter components are arranged in a state of an annular array on the pipeline body 1;

[0034] It should be noted here that the limiting effect is ensured by using multiple sets of limiting components.

[0035] Preferably, the limit assembly includes a slot 401 opened on the outer side of the end of the pipe body 1, a mounting slot 402 is opened on the outer side of the adjacent pipe body 1, a plug board 403 for plugging and connecting with the slot 401 is arranged on the mounting slot 402, a connecting assembly for connecting the plug board 403 and an elastic assembly for elastically pushing the plug board 403 are arranged inside the mounting slot 402, and a blocking assembly for resisting and blocking the front end of the plug board 403 is arranged on the pipe body 1;

[0036] It should be noted here that: during the process of threaded connection between the mounting sleeves 201 and the connecting grooves 202 on the two adjacent groups of pipe bodies 1, the plug plate 403 is pushed to move toward the outside of the mounting groove 402 through transmission. During the movement of the plug plate 403, with the rotation of the adjacent pipe bodies 1, each group of plug plates 403 is respectively inserted into the inside of each group of slots 401. Through the insertion and connection between the plug plate 403 and the slot 401, the two groups of pipe bodies 1 after threaded connection are limited, avoiding relative rotation of the two groups of pipe bodies 1 due to the friction with the inner wall of the oil well after the connection, thereby ensuring the stability of the two groups of drilling equipment pipelines after connection.

[0037] Preferably, the sliding assembly includes a sliding groove 701 opened at the bottom of the installation groove 402, and a connecting plate 702 is slidably connected inside the sliding groove 701, and the connecting plate 702 is fixed to the plug plate 403;

[0038] It should be noted here that the sliding groove 701 and the connecting plate 702 assist in the slidable connection of the plug plate 403 .

[0039] Preferably, the elastic component includes a plurality of mounting rods 801 slidably connected to the connecting plate 702, the mounting rods 801 are fixed inside the slide slot 701, and an extrusion spring 802 is sleeved on the outer side of each mounting rod 801, and the two ends of the extrusion spring 802 are respectively set against the inner wall of the slide slot 701 and the connecting plate 702;

[0040] It should be noted here that: the connecting plate 702 and the plug plate 403 are pushed by elastic force through the mounting rod 801 and the extrusion spring 802 .

[0041] Preferably, the blocking component includes a square groove 501 formed on the mounting sleeve 201, a baffle 502 for resisting and blocking the front end of the plug plate 403 is provided on the square groove 501, a telescopic component for telescopically connecting the baffle 502 is provided between the square groove 501 and the baffle 502, a slope 503 is provided on one side of the baffle 502, and an oblique chamfer 504 for resisting and transmitting with the slope 503 is provided on the inner wall of the connecting groove 202 on the adjacent pipe body 1;

[0042] It should be noted here that: as the mounting sleeve 201 and the connecting groove 202 are threadedly connected, the oblique chamfer 504 on the connecting groove 202 abuts against the inclined surface 503 on the baffle 502. During the abutment process, the baffle 502 is pushed toward the inside of the square groove 501 to shrink and move. During the shrinkage movement of the baffle 502, the baffle 502 no longer blocks the movement of the plug plate 403.

[0043] Preferably, the telescopic assembly includes a plurality of groups of first sleeves 601 fixed inside the square groove 501, each group of the first sleeves 601 is slidably connected with a first slide bar 602, one end of the first slide bar 602 is fixed to the baffle 502, and the outer side of each group of the first sleeves 601 is sleeved with a first spring 603, and the two ends of the first spring 603 are respectively connected to the inner wall of the square groove 501 and the baffle 502;

[0044] It should be noted here that: the first sleeve 601 and the first slide bar 602 are used to assist the telescopic connection of the stressed rear baffle 502, and the first spring 603 is used to assist the reset movement of the stressed rear baffle 502.

[0045] Preferably, the first sealing assembly includes a first annular groove 301 opened inside the connecting groove 202, and a sealing gasket 302 is installed inside the first annular groove 301 for sealing against the end of the mounting sleeve 201 on the adjacent pipe body 1;

[0046] It should be noted here that: during the connection of the installation sleeves 201 and the connecting grooves 202 of two adjacent groups of pipe bodies 1, the front end of the installation sleeve 201 is abutted against the sealing gasket 302 inside the first annular groove 301, and the connection between the two groups of pipe bodies 1 is sealed through the abutment effect.

[0047] Preferably, the second sealing component includes a second annular groove 1101 formed on the inner wall of the connecting groove 202, an annular sealing airbag 1102 for sealing against the outer side of the mounting sleeve 201 on the adjacent pipe body 1 is installed inside the second annular groove 1101, and an inflating component for inflating the inside of the annular sealing airbag 1102 is provided on the pipe body 1; the inflating component includes a piston tube 901 fixed on the annular sealing airbag 1102, a piston rod 902 is slidably connected to the piston tube 901, one end of the piston rod 902 is located inside the slot 401 and fixed with a mounting plate 903, and a connecting component for connecting the mounting plate 903 is provided between the mounting plate 903 and the slot 401;

[0048] It should be noted here that: during the installation and connection of two adjacent groups of pipe bodies 1, as the plug plate 403 is inserted into the interior of the slot 401, the front end of the plug plate 403 is abutted against the mounting plate 903. During the abutment process, the mounting plate 903 is pushed toward the interior of the slot 401. During the movement of the mounting plate 903, the piston rod 902 moves toward the interior of the piston tube 901. Through the movement of the piston rod 902, part of the gas inside the piston tube 901 is squeezed and transported to the interior of the annular sealing airbag 1102, and the interior of the annular sealing airbag 1102 is inflated. Through the inflation effect, the interior of the annular sealing airbag 1102 is pressurized and expanded. During the expansion process, the interior of the annular sealing airbag 1102 is abutted against the outer side of the mounting sleeve 201, and the connection between the two groups of pipe bodies 1 is sealed again to ensure the sealing effect after the two groups of pipe bodies 1 are connected.

[0049] The connecting assembly includes a plurality of groups of second sleeves 1001 fixed inside the slot 401, a second slide bar 1002 is slidably connected to the second sleeve 1001, one end of the second slide bar 1002 is fixed to the mounting plate 903, and a second spring 1003 is sleeved on the outer side of each group of second sleeves 1001;

[0050] It should be noted here that: the second sleeve 1001 and the second slide bar 1002 facilitate the telescopic connection of the mounting plate 903, and the second spring 1003 facilitates the resetting of the mounting plate 903 after movement.

[0051] In this scheme: a drilling equipment pipeline connection structure includes the following steps:

[0052] During the connection process of the drilling equipment pipeline, the installation sleeves 201 and the connection grooves 202 on the two adjacent sets of pipeline bodies 1 are installed and connected in a threaded manner, and the strength of the connection between the two sets of pipeline bodies 1 is ensured by the threaded connection;

[0053] During the process of threaded connection between the installation sleeves 201 and the connecting grooves 202 on the two adjacent groups of pipe bodies 1, the oblique chamfers 504 on the connecting grooves 202 abut against the inclined surfaces 503 on the baffle plate 502 as the installation sleeves 201 and the connecting grooves 202 are threadedly connected. During the abutment process, the baffle plate 502 is pushed toward the inside of the square groove 501 for contraction movement. During the contraction movement of the baffle plate 502, the baffle plate 502 no longer blocks the movement of the plug plate 403. The elastic component and the sliding component are used to hold the plug plate 403 in place. 3 and the elastic force, push the plug plate 403 to move to the outside of the installation groove 402. During the movement of the plug plate 403, with the rotation of the adjacent pipe body 1, each group of plug plates 403 is respectively inserted into the inside of each group of slots 401. Through the plug-in connection between the plug plate 403 and the slot 401, the two groups of pipe bodies 1 after threaded connection are limited to avoid relative rotation of the two groups of pipe bodies 1 due to friction with the inner wall of the oil well after connection, thereby ensuring the stability of the two groups of drilling equipment pipes after connection;

[0054] During the process of connecting the installation sleeves 201 and the connecting grooves 202 of the two adjacent groups of pipe bodies 1, the front end of the installation sleeve 201 is abutted against the sealing gasket 302 inside the first annular groove 301. Through the abutment, the connection between the two groups of pipe bodies 1 is sealed. In the process of installing and connecting the two adjacent groups of pipe bodies 1, as the plug plate 403 is inserted into the slot 401, the front end of the plug plate 403 is abutted against the installation plate 903. In the process of abutment, the installation plate 903 is pushed toward the inside of the slot 401 for movement. During the process, the piston rod 902 moves toward the inside of the piston tube 901. Through the movement of the piston rod 902, part of the gas inside the piston tube 901 is squeezed and transported to the inside of the annular sealing airbag 1102, and the inside of the annular sealing airbag 1102 is inflated. Through the inflation effect, the inside of the annular sealing airbag 1102 is pressurized and expanded. During the expansion process, the inside of the annular sealing airbag 1102 is abutted against the outside of the mounting sleeve 201, and the connection between the two groups of pipe bodies 1 is sealed again to ensure the sealing effect after the two groups of pipe bodies 1 are connected.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling equipment pipeline connection structure, comprising: Pipe body (1); It is characterized by further comprising: A connection assembly is arranged at both ends of a pipe body (1) for assisting installation and connection with adjacent pipe bodies (1), the connection assembly comprising a mounting sleeve (201) fixed to one end of the pipe body (1), the other end of the pipe body (1) being provided with a connection groove (202), the mounting sleeves (201) and the connection groove (202) of two adjacent groups of pipe bodies (1) being installed and connected by means of threads, a limit assembly is arranged between the two adjacent groups of pipe bodies (1) for preventing the two groups of pipe bodies (1) from resetting and rotating after connection, and a first sealing assembly and a second sealing assembly are arranged inside the connection groove (202) for sealing after connection.

2. A drilling equipment pipe connection structure according to claim 1, characterized in that: The position limiting components are arranged in multiple groups, and the multiple groups of position limiting components are arranged on the pipeline body (1) in the form of a ring array.

3. A drilling equipment pipe connection structure according to claim 2, characterized in that: The position-limiting component comprises a slot (401) provided on the outside of the end of the pipe body (1); a mounting slot (402) is provided on the outside of the adjacent pipe body (1); a plug plate (403) for plugging and connecting with the slot (401) is provided on the mounting slot (402); a connecting component for connecting the plug plate (403) and an elastic component for elastically pushing the plug plate (403) are provided inside the mounting slot (402); and a blocking component for resisting and blocking the front end of the plug plate (403) is provided on the pipe body (1).

4. A drilling equipment pipe connection structure according to claim 3, characterized in that: The sliding assembly comprises a sliding groove (701) opened at the bottom of the installation groove (402), and a connecting plate (702) is slidably connected inside the sliding groove (701), and the connecting plate (702) is fixed to the plug plate (403).

5. A drilling equipment pipe connection structure according to claim 4, characterized in that: The elastic component comprises a plurality of groups of mounting rods (801) slidably connected to the connecting plate (702); the mounting rods (801) are fixed inside the slide groove (701); an extrusion spring (802) is sleeved on the outer side of each group of the mounting rods (801); and two ends of the extrusion spring (802) are respectively disposed against the inner wall of the slide groove (701) and the connecting plate (702).

6. A drilling equipment pipe connection structure according to claim 3, characterized in that: The blocking component comprises a square groove (501) formed on the mounting sleeve (201); a baffle (502) for resisting and blocking the front end of the plug plate (403) is provided on the square groove (501); a telescopic component for telescopically connecting the baffle (502) is provided between the square groove (501) and the baffle (502); a slope (503) is formed on one side of the baffle (502); and an oblique chamfer (504) for resisting and transmitting against the slope (503) is formed on the inner wall of the connecting groove (202) on the adjacent pipe body (1).

7. A drilling equipment pipe connection structure according to claim 6, characterized in that: The telescopic assembly comprises a plurality of groups of first sleeves (601) fixed inside the square groove (501), each group of the first sleeves (601) is slidably connected with a first slide bar (602), one end of the first slide bar (602) is fixed to the baffle (502), and a first spring (603) is sleeved on the outer side of each group of the first sleeves (601), and the two ends of the first spring (603) are respectively connected to the inner wall of the square groove (501) and the baffle (502).

8. The drilling equipment pipe connection structure according to claim 1, characterized in that: The first sealing assembly comprises a first annular groove (301) opened inside the connecting groove (202), and a sealing gasket (302) is installed inside the first annular groove (301) for sealing against the end of the mounting sleeve (201) on the adjacent pipe body (1).

9. A drilling equipment pipe connection structure according to claim 8, characterized in that: The second sealing component comprises a second annular groove (1101) formed on the inner wall of the connecting groove (202); an annular sealing airbag (1102) is installed inside the second annular groove (1101) for sealing against the outer side of the mounting sleeve (201) on the adjacent pipe body (1); and an inflation component is provided on the pipe body (1) for inflating the inside of the annular sealing airbag (1102).

10. A drilling equipment pipe connection structure according to claim 9, characterized in that: The inflation component comprises a piston tube (901) fixed on the annular sealing airbag (1102), a piston rod (902) being slidably connected to the piston tube (901), one end of the piston rod (902) being located inside the slot (401) and being fixed with a mounting plate (903), and a connecting component for connecting the mounting plate (903) is provided between the mounting plate (903) and the slot (401); The connecting assembly comprises a plurality of groups of second sleeves (1001) fixed inside the slot (401), a second slide bar (1002) being slidably connected to the second sleeve (1001), one end of the second slide bar (1002) being fixed to the mounting plate (903), and a second spring (1003) being sleeved on the outer side of each group of the second sleeves (1001).

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