WO2020093270A1

WO2020093270A1 - Pressing-type marine threaded drill pipe

Info

Publication number: WO2020093270A1
Application number: PCT/CN2018/114366
Authority: WO
Inventors: 赵钧羡
Original assignee: 江苏和信石油机械有限公司
Priority date: 2018-11-06
Filing date: 2018-11-07
Publication date: 2020-05-14
Also published as: CN109236196A

Abstract

A pressing-type marine threaded drill pipe, comprising a first abutment body (1), a second abutment body (2), a driving snap-fit assembly (3), a pressing ring (4), and pressing elastic bodies (5); the pressing ring (4) is provided between the first abutment body (1) and the second abutment body (2), the pressing ring (4) is snap-fitted to a T-shaped snap-fit ring groove (24) on a connecting ring surface of the second abutment body (2) by means of a T-shaped snap-fit ring tooth (41) at one end, the other end of the pressing ring (4) abuts against a connecting ring groove (15) of the first abutment body (1), and the T-shaped snap-fit ring tooth (41) of the pressing ring (4) is elastically pressed by the pressing elastic bodies (5) to perform cushioning and support.

Description

Pressure-resistant marine thread drill rod

Technical field

The invention relates to a pressure-resistant marine thread drill rod.

Background technique

At present, offshore oil mining generally adopts oil drill rods. Oil drill rods are connected end-to-end through threaded joints. Threaded joints generally include external threaded joints and internal threaded joints. External threaded joints and internal threaded joints are connected end-to-end through threads . However, oil drilling rods are mainly subjected to torsion, tension, compression, bending, vibration and other compound loads when drilling, so that the connection between the oil drilling rods is demanding. When the oil drilling rods of the prior art are used to extract oil, the oil drilling The threaded joints of the rods often have unstable connections and are broken in place. It is necessary to develop a marine threaded drill rod with a stable connection.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the problem solved by the present invention is to provide a pressure-resistant marine thread drill rod with stable connection and convenient operation.

To solve the above problems, the technical solutions adopted by the present invention are as follows:

A pressure-resistant marine thread drill rod, which includes a first butt body, a second butt body, a driving clamping component, a pressure ring, and a pressure elastic body;

One end of the first docking body is provided with an internally threaded channel for clamping; the outer end of the clamping internally threaded channel is provided with an internal thread section; the outer periphery of the first docking body is provided with an axial distribution Adjustable ring groove; two sides of the first butt body are respectively provided with a telescopic arc groove; the outer side of the telescopic arc groove is communicated with the adjustment ring groove, the inner side of the telescopic arc groove and the internal thread channel of the clip The ends are connected; the inner side of the adjusting ring groove is provided with an inner adjusting screw ring surface; the outer side of the telescopic arc groove is provided with an outer adjusting screw ring surface; the outer end surface of the first docking body is provided with a connection Ring groove

One end of the second butt joint body is provided with an externally threaded ring body; the internal end of the externally threaded ring body is provided with an external thread section, and the external end of the externally threaded ring body is provided with an annular clamping Groove; the outside of the snap-fit external thread ring body is provided with a connecting ring surface; the connecting ring surface is provided with a T-shaped snap ring groove;

A plurality of compression elastic bodies are installed in the T-shaped snap ring groove; one end of the compression ring is provided with T-shaped snap ring teeth; the compression ring passes through the T-shaped snap ring teeth at one end Clamped in the T-shaped snap ring groove of the connecting ring surface of the second mating body; the other end of the pressing ring abuts in the connecting ring groove of the first mating body; the pressing elastic body is elastically squeezed T-shaped snap ring teeth pressed against the pressure ring;

The driving clamping assembly includes two telescopic arc clamping plates, two telescopic elastomers, and a driving ring sleeve; a telescopic elastic body and a telescopic arc clamping plate are respectively installed in the telescopic arc grooves The outer end of the telescopic elastic body is elastically pressed against the inner wall of the telescopic arc groove, and the inner end of the telescopic elastic body elastically squeezes the outer side of the telescopic arc clamping plate; the drive ring sleeve includes an inner ring body and an outer ring Body, connecting ring plate; the outer ring body is concentrically mounted on the outer side of the inner ring body; the inner ends of the inner ring body and the outer ring body are fixed by the connecting ring plate; the inner side of the outer ring body is provided with an external drive Threaded torus; inside the inner ring body is provided with an inner drive threaded torus; the outer drive threaded torus of the outer ring body and the outer adjustment screw torus of the telescopic arc groove are connected for thread rotation; The inner driving thread ring surface of the inner ring body and the inner adjusting thread ring surface of the adjusting ring groove are connected in screw rotation; the outer end of the inner ring body is pressed against the inner sides of the two telescopic arc-shaped clamping plates;

The second docking body is connected with the external thread section of the external thread ring body and the internal thread section of the internal thread channel of the first docking body for thread rotation; the telescopic elastic body elastically drives the telescopic arc The shape clamping plate is inserted and clamped in the annular clamping groove of the second ring body; the driving ring sleeve presses and drives the two telescopic arc clamping plates in the telescopic arc groove through the outer end of the inner ring body Perform stretching exercises.

Further, the driving clamping assembly further includes two guide rods; a guide rod is vertically installed in the telescopic arc groove; and a telescopic elastic body is sleeved on the guide rod.

Further, the telescopic arc clamping plate is provided with a guide groove; the outer end of the guide rod is fixed on the inner wall of the telescopic arc groove, and the inner end of the guide rod extends through the telescopic elastic body and is inserted into the telescopic arc card In the guide groove of the connecting plate.

Further, the drive clamping assembly further includes two arc-shaped driving blocks; an inner side of the telescopic arc-shaped clamping plate is installed with an arc-shaped driving block; the inner side of the arc-shaped driving block is provided with a wedge-shaped Moving arc surface; the outer end of the inner ring body is provided with a wedge-shaped drive ring surface; the inner ring body is driven by the wedge-shaped drive ring surface to drive the wedge-shaped driven arc surface of the arc-shaped drive block; the wedge shape When the drive ring surface moves in the axial direction, the wedge-shaped driven arc surface is slid against the wedge-shaped drive ring surface.

Further, the arc-shaped driving block is made of Teflon material.

Further, both the first butt body and the second butt body have a cylindrical ring structure.

The beneficial effects of the present invention

In the present invention, a pressure ring is added between the first butt body and the second butt body. The pressure ring is clamped by a T-shaped snap ring tooth at one end to the T-shaped snap ring groove of the connecting ring surface of the second butt body Inwardly, the other end of the pressure ring abuts in the connecting ring groove of the first docking body, and then the T-shaped snap ring teeth of the pressure ring are elastically pressed by the pressure elastic body to play the role of buffer support; the structure of the invention Ingenious design, the first coupling body and the second coupling body are connected by threads, and a driving clamping component is added. The driving ring sleeve is driven by the driving clamping component to use the outer end of the inner ring body to press and drive the expansion and contraction The arc-shaped clamping plate makes the telescopic arc-shaped clamping plate perform radial telescopic movement in the telescopic arc-shaped groove, so that the telescopic arc-shaped clamping plate is inserted into and clamped in the annular clamping groove of the second butting body, so that the first The radial and axial directions of the butt joint and the second butt joint realize the stability of the connection; the operation of the present invention is convenient, and the rotation of the driving ring sleeve can be used to drive the two telescopic arc-shaped clamping plates to perform radial telescopic movement. Disassembly and installation are very convenient, creating a new field Precedent.

BRIEF DESCRIPTION

FIG. 1 is a schematic structural diagram of the present invention.

2 is an enlarged cross-sectional view of the side of the present invention after installation.

Figure 3 is an enlarged cross-sectional view of Figure 2 after disassembly.

FIG. 4 is an enlarged schematic diagram of one side of the driving ring sleeve, the telescopic arc clamping plate and the arc driving block.

detailed description

The content of the present invention will be further described in detail below with reference to the drawings.

As shown in FIGS. 1 to 4, a pressure-type marine thread drill rod includes a first butt body 1, a second butt body 2, and a driving clamping component 3; a pressure ring 4 and an elastic body 5.

As shown in FIGS. 2 and 3, one end of the first docking body 1 is provided with an internally threaded channel 11; the outer end of the internally threaded channel 11 is provided with an internal threaded section 12; the first The outer sides of the pair of joints 1 are provided with adjustment ring grooves 13 distributed axially; the two sides of the first joint body are respectively provided with a telescopic arc groove 14; the outer side of the telescopic arc groove 14 and the adjustment The ring groove 13 communicates, and the inner side of the telescopic arc groove 14 communicates with the inner end of the clamping female screw channel 11; the inner side of the adjusting ring groove 13 is provided with an inner adjusting screw ring surface 131; the outer side of the telescopic arc groove 14 With external adjustment thread ring surface 141. A connecting ring groove 15 is provided on the outer end surface of the first docking body 1.

As shown in FIGS. 2 and 3, one end of the second mating body 2 is provided with a male threaded ring body 21; the inner end of the male threaded ring body 21 is provided with an external threaded section 23 for clamping The outer end of the externally threaded ring body 21 is provided with an annular clamping groove 22. A connecting ring surface is provided on the outer side of the snap-fit external thread ring body 21; a T-shaped snap ring groove 24 is provided on the connecting ring surface.

As shown in FIG. 1, a plurality of pressing elastic bodies 5 are installed in the T-shaped snap ring groove 24; one end of the pressing ring 4 is provided with T-shaped snap ring teeth 41; The ring 4 is snapped into the T-shaped snap ring groove 24 connected to the ring surface of the second mating body 2 through the T-shaped snap ring teeth 41 at one end; the other end of the pressing ring 4 abuts on the first mating body 1 in the connecting ring groove 15; the pressing elastic body 5 elastically presses the T-shaped snap ring teeth 41 of the pressing ring 4.

As shown in FIGS. 2 to 4, the driving clamping assembly 3 includes two telescopic arc clamping plates 32, two telescopic elastic bodies 33, and a driving ring sleeve 31; the telescopic arc grooves 14 are respectively A telescopic elastic body 33 and a telescopic curved clamping plate 32 are installed; the outer end of the telescopic elastic body 33 is elastically pressed against the inner wall of the telescopic arc groove 14, and the inner end of the telescopic elastic body 33 elastically squeezes the telescopic arc The outer side of the clamping plate 32; the driving ring sleeve 31 includes an inner ring body 312, an outer ring body 311, and a connecting ring plate 313; the outer ring body 311 is concentrically mounted outside the inner ring body 312; the The inner ends of the inner ring body 312 and the outer ring body 311 are fixed by the connecting ring plate 313; the inner side of the outer ring body 311 is provided with an outer driving thread ring surface 3111; the inner side of the inner ring body 312 is provided with an inner driving thread Torus 3121; the outer driving threaded torus 3111 of the outer ring body 311 and the outer adjusting threaded torus 141 of the telescopic arc-shaped groove 14 are connected in screw rotation; the inner driving threaded torus 3121 of the inner ring body 312 Thread rotating connection with the inner adjusting thread ring surface 131 of the adjusting ring groove 13; the outer end of the inner ring body 312 Pressed against the inner two telescopic arc-shaped detent plate 34.

As shown in FIGS. 2 and 3, the second mating body 2 is engaged by engaging the external thread section 23 of the externally threaded ring body 21 and the internal thread section 12 of the first mating body 1 to engage the internal thread channel 11 Thread rotation connection; the telescopic elastic body 33 elastically drives the telescopic arc-shaped clamping plate 32 to be inserted into the annular clamping groove 22 of the second ring body 2; the driving ring sleeve 31 passes through the inner ring body 312 The outer end portion presses and drives the two telescopic arc clamping plates 32 to perform telescopic movement in the telescopic arc groove 14.

As shown in FIGS. 1 to 4, it is further preferred that the driving clamping assembly 3 further includes two guide rods 34; one guide rod 34 is vertically installed in the telescopic arc-shaped groove 14; the guide rod 34 A telescopic elastic body 33 is respectively sleeved on the upper part. Further, the telescopic arc clamping plate 32 is provided with a guide groove 321; the outer end of the guide rod 34 is fixed on the inner wall of the telescopic arc groove 14, the inner end of the guide rod 34 extends through the telescopic elastic body 33 Then, insert it into the guide groove 321 of the telescopic arc-shaped clamping plate 32. Further preferably, the driving clamping assembly 3 further includes two arc-shaped driving blocks 35; an inner side of the retractable arc-shaped clamping plate 32 is installed with an arc-shaped driving block 35; as shown in FIG. 4, The inner side of the arc-shaped driving block 35 is provided with a wedge-shaped driven arc surface 351; the outer end portion of the inner ring body 312 is provided with a wedge-shaped drive ring surface 3122; The body 312 presses against the wedge-shaped driven arc surface 351 of the driving arc-shaped driving block 35 through the wedge-shaped driving ring surface 3122. When the wedge-shaped driving ring surface moves axially, the wedge-shaped driven arc surface is in close contact with the wedge-shaped driving ring surface to slide in the radial direction. Further preferably, in order to facilitate sliding and reduce friction, the arc-shaped driving block 35 is made of polytetrafluoroethylene material. It is further preferred that the first butt body 1 and the second butt body 2 both have a cylindrical ring structure.

When the driving ring sleeve 31 performs an axial rotation movement on the first ring body 1, the inner ring body 312 of the driving ring sleeve 31 presses against the wedge-shaped driven arc surface 351 of the driving arc-shaped driving block 35 through the wedge-shaped driving ring surface 3122, Using the principle of wedge-shaped surface sliding, when the inner ring body 312 performs axial movement, the wedge-shaped drive ring surface 3122 will squeeze the wedge-shaped driven arc surface 351 to slide radially, thereby driving the arc-shaped drive block 35 to slide radially, and finally The telescopic arc-shaped clamping plate 32 is driven to perform radial telescopic movement in the telescopic arc-shaped groove 14, thereby controlling whether the telescopic arc-shaped clamping plate 32 is inserted into or withdrawn from the annular clamping groove 22. During this process, the telescopic elastic body 33 The elastic elastic body 33 always elastically pushes the telescopic arc-shaped clamping plate 32, so that the wedge-shaped driven arc surface 351 of the arc-shaped driving block 35 always adheres to the wedge-shaped driving ring surface 3122 of the inner ring body 312.

In the present invention, a pressing ring 4 is added between the first butt body 1 and the second butt body 2. The pressing ring 4 is clamped to the connecting ring surface of the second butt body 2 by a T-shaped snap ring tooth 41 at one end. In the T-shaped snap ring groove 24, the other end of the pressing ring 4 abuts in the connecting ring groove 15 of the first mating body 1, and then the pressing elastic body 5 is used to elastically press the T-shaped snap ring of the pressing ring 4 The teeth 41 function as a buffer support; the structure of the present invention is cleverly designed, and the first butt body 1 and the second butt body 2 are connected by threads while the drive clamping assembly 3 is added, and the drive clamping assembly 3 drives The rotation of the ring sleeve 31 uses the outer end portion of the inner ring body 312 to press and drive the telescopic arc-shaped clamping plate 32, so that the telescopic arc-shaped clamping plate 32 performs a radial telescopic movement in the telescopic arc groove 14 to make the telescopic arc The shape-shaped clamping plate 32 is inserted and clamped in the annular clamping groove 22 of the second docking body 2, so that both the radial and axial directions of the first docking body 1 and the second docking body 2 realize the stability of the connection; the invention The operation is convenient, and the rotation of the driving ring sleeve 31 can be used to drive the two telescopic arc-shaped clamping plates 32 to perform radial telescopic movement. Installation is very convenient, creating a precedent in the art.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the present invention. Within the scope of protection.

Claims

A compression type marine thread drill rod, characterized in that it comprises a first butt body, a second butt body, a driving clamping component, a pressure ring and a pressure elastic body;

One end of the first docking body is provided with an internally threaded channel for clamping; the outer end of the clamping internally threaded channel is provided with an internal thread section; the outer periphery of the first docking body is provided with an axial distribution Adjustable ring groove; two sides of the first butt body are respectively provided with a telescopic arc groove; the outer side of the telescopic arc groove is communicated with the adjustment ring groove, the inner side of the telescopic arc groove and the internal thread channel of the clip The ends are connected; the inner side of the adjusting ring groove is provided with an inner adjusting screw ring surface; the outer side of the telescopic arc groove is provided with an outer adjusting screw ring surface; the outer end surface of the first docking body is provided with a connection Ring groove

One end of the second butt joint body is provided with an externally threaded ring body; the internal end of the externally threaded ring body is provided with an external thread section, and the external end of the externally threaded ring body is provided with an annular clamping Groove; the outside of the snap-fit external thread ring body is provided with a connecting ring surface; the connecting ring surface is provided with a T-shaped snap ring groove;

A plurality of compression elastic bodies are installed in the T-shaped snap ring groove; one end of the compression ring is provided with T-shaped snap ring teeth; the compression ring passes through the T-shaped snap ring teeth at one end Clamped in the T-shaped snap ring groove of the connecting ring surface of the second mating body; the other end of the pressing ring abuts in the connecting ring groove of the first mating body; the pressing elastic body is elastically squeezed T-shaped snap ring teeth pressed against the pressure ring;

The driving clamping assembly includes two telescopic arc clamping plates, two telescopic elastomers, and a driving ring sleeve; a telescopic elastic body and a telescopic arc clamping plate are respectively installed in the telescopic arc grooves The outer end of the telescopic elastic body is elastically pressed against the inner wall of the telescopic arc groove, and the inner end of the telescopic elastic body elastically squeezes the outer side of the telescopic arc clamping plate; the drive ring sleeve includes an inner ring body and an outer ring Body, connecting ring plate; the outer ring body is concentrically mounted on the outer side of the inner ring body; the inner ends of the inner ring body and the outer ring body are fixed by the connecting ring plate; the inner side of the outer ring body is provided with an external drive Threaded torus; inside the inner ring body is provided with an inner drive threaded torus; the outer drive threaded torus of the outer ring body and the outer adjustment screw torus of the telescopic arc groove are connected for thread rotation; The inner driving thread ring surface of the inner ring body and the inner adjusting thread ring surface of the adjusting ring groove are connected in screw rotation; the outer end of the inner ring body is pressed against the inner sides of the two telescopic arc-shaped clamping plates;

The second docking body is connected with the external thread section of the external thread ring body and the internal thread section of the internal thread channel of the first docking body for thread rotation; the telescopic elastic body elastically drives the telescopic arc The shape clamping plate is inserted and clamped in the annular clamping groove of the second ring body; the driving ring sleeve presses and drives the two telescopic arc clamping plates in the telescopic arc groove through the outer end of the inner ring body Perform stretching exercises.
The pressure-resistant marine thread drill rod according to claim 1, characterized in that, the driving clamping assembly further comprises two guide rods; one guide rod is vertically installed in the telescopic arc groove; A telescopic elastic body is sleeved on each of the guide rods.
The pressure-resistant marine thread drill rod according to claim 2, wherein the telescopic arc-shaped clamping plate is provided with a guide groove; the outer end of the guide rod is fixed on the inner wall of the telescopic arc-shaped groove, The inner end of the guide rod extends through the telescopic elastic body and is inserted into the guide groove of the telescopic arc-shaped clamping plate.
The pressure-resistant marine threaded drill rod according to claim 1, wherein the driving clamping assembly further includes two arc-shaped driving blocks; an inner side of the telescopic arc clamping plate is respectively installed with an arc Shaped drive block; the inside of the arc-shaped drive block is provided with a wedge-shaped driven arc surface; the outer end of the inner ring body is provided with a wedge-shaped drive ring surface; the inner ring body is pressed against the wedge-shaped drive ring surface The wedge-shaped driven arc surface of the pressure-driven arc-shaped driving block; when the wedge-shaped drive ring surface moves axially, the wedge-shaped driven arc surface is in close contact with the wedge-shaped drive ring surface for radial sliding.
The pressure-resistant marine thread drill rod according to claim 4, wherein the arc-shaped driving block is made of Teflon material.
The pressure-resistant marine thread drill rod according to claim 1, wherein the first butt body and the second butt body both have a cylindrical ring body structure.