Horizontal directional drilling offshore pull-back buckle arresting structure

Abstract

The utility model relates to the field of cables, in particular to a horizontal directional drilling offshore pull-back buckle-arresting structure which comprises buckle-arresting pipes, lifting lugs fixedly installed at one ends of the buckle-arresting pipes, clamping rings installed at one ends of the lifting lugs in a clamped mode and connecting pipes, installation holes are formed in the side walls of the connecting pipes in a penetrating mode, and the buckle-arresting pipes are symmetrically installed in the installation holes in a clamped mode. Sliding grooves are symmetrically formed in the inner wall of the connecting pipe, and the connecting pipe slides along the sliding grooves through the buckle arresting pipe. The horizontal directional drilling seaborne pull-back buckle arresting structure is provided with a connecting pipe, a plurality of limiting grooves communicating with a sliding groove are formed in the side wall of a mounting hole, clamping grooves are formed in the side walls of the bottoms of the limiting grooves, limiting blocks are symmetrically and fixedly installed on the edge, close to one end, of the arc wall of a buckle arresting pipe, and the buckle arresting pipe slides along the sliding groove through the limiting blocks; the limiting block slides into the limiting groove when rotating to the buckling pipe, and the limiting block is clamped into the clamping groove when sliding to the bottom of the limiting groove so as to fix the position of the buckling-arresting pipe, so that the overall length of the buckling-arresting structure is adjusted, and the buckling-arresting structure is suitable for oceans with different depths.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of buckling structure, especially a horizontal directional drilling offshore back -towing buckling structure. BACKGROUND

[0002] The horizontal directional drilling technology is mainly used for laying submarine pipelines, especially when crossing oceans, rivers or other water bodies. Compared with traditional excavation methods, it can significantly reduce the impact on marine ecosystems, as it avoids large-scale seabed disturbance and potential pollution risks. Horizontal directional drilling offshore back -towing is the final installation step to complete the pipeline crossing the water body. During back -towing, the pipeline is subjected to a large axial tension, especially in the curved section or uneven seabed, which is prone to local buckling. The buckling structure is a key device to prevent the pipeline from buckling due to axial pressure during back -towing

[0003] The utility model discloses a kind of seabed pipeline buckling preventers with toothed reinforcing rib of Chinese patent No. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of horizontal directional drilling offshore back -towing buckling structure, to solve the problem that the length of buckling structure is fixed and cannot be applied to different water depths when used at different depths of ocean in the related art.

[0005] To achieve the above purpose, according to one aspect of the utility model, a kind of horizontal directional drilling offshore back -towing buckling structure is provided, including buckling pipe, the lug is fixedly installed at one end of the buckling pipe, the clasp ring is connected and installed at one end of the lug, further comprising: connecting pipe, the installation hole is opened in the side wall of the connecting pipe, the buckling pipe is symmetrically connected and installed in the installation hole, the sliding slot is symmetrically opened in the inner wall of the connecting pipe, by the buckling pipe along sliding slot sliding, for adjusting the length of buckling structure.

[0006] Further, the installation hole inner wall is symmetrically opened with a plurality of limit grooves communicating with the sliding slot.

[0007] Further, the inner side wall of the limit groove is provided with a clamping groove, the clamping groove is perpendicular to the limit groove, and the clamping grooves at both ends of the connecting pipe are symmetrical.

[0008] Further, a plurality of limit blocks are symmetrically fixedly installed at the arc wall of the buckling pipe close to the edge of one end, and the limit blocks are connected and installed in the sliding slot.

[0009] Further, the connecting pipe side wall is provided with a plurality of fixed screw holes with communicating clamping grooves, and fixed bolts are screwed into the fixed screw holes.

[0010] Further, a round corner is formed at the edge of the limiting block, and when the length of the buckling stop structure is changed, the limiting block is slidingly installed in the sliding groove, and the sliding buckling pipe is changed in position; when the length of the buckling stop structure is fixed, the buckling pipe is rotated, the limiting block is slidingly arranged in the limiting groove, and when the limiting block is slidingly arranged at the bottom of the limiting groove, the limiting block is clamped in the clamping groove to fix the position of the buckling pipe.

[0011] Further, a bevel is symmetrically formed at the opening of the limiting groove.

[0012] Further, a lifting lug hole is formed through the side wall of the lifting lug near one side edge.

[0013] Further, the clamping ring is an arc structure, and connecting rings are fixedly installed at both ends of the clamping ring.

[0014] Further, an installation shaft is inserted and installed between the connecting rings, a plurality of limiting rings are symmetrically fixedly installed at both ends of the installation shaft, and the installation shaft is slidingly clamped in the lifting lug hole.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The horizontal directional drilling offshore back dragging buckling stop structure is provided with a connecting pipe, a plurality of installation holes are formed through the side wall of the connecting pipe, buckling pipes are symmetrically slidingly installed in the installation holes, a plurality of sliding grooves are symmetrically formed in the inner wall of the installation hole, a plurality of limiting grooves communicating with the sliding grooves are formed in the side wall of the installation hole, a clamping groove is formed in the bottom side wall of the limiting groove, limiting blocks are symmetrically fixedly installed at the arc wall of the buckling pipe near one end edge, the buckling pipe is slidingly arranged along the sliding groove through the limiting block, the limiting block is slidingly arranged in the limiting groove by rotating the buckling pipe, and when the limiting block is slidingly arranged at the bottom of the limiting groove, the limiting block is clamped in the clamping groove to fix the position of the buckling pipe, so that the overall length of the buckling stop structure is adjusted to be suitable for different depths of the ocean.

[0017] 2. The horizontal directional drilling offshore back dragging buckling stop structure is provided with a buckling pipe, a lifting lug is fixedly installed at one end of the buckling pipe, and a clamping ring is clamped and installed at one end of the lifting lug; the back dragging tool and the pipeline are connected with the buckling pipe through the clamping ring to unearth the pipeline, and the length of the connecting pipe and the buckling pipe compensates the water depth when the pipeline is back dragged, so that the risk of buckling deformation caused by the pipeline being too large in the water after being unearthed is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structure schematic view of the buckling stop structure in the preferred embodiment of the utility model;

[0019] Figure 2 It is a connecting pipe structure schematic view in the preferred embodiment of the utility model;

[0020] Figure 3 It is the schematic view of the snap ring structure in the preferred embodiment of the utility model;

[0021] Figure 4 It is the schematic view of the stop bending pipe structure in the preferred embodiment of the utility model;

[0022] Figure 5 It is the schematic view of the connecting pipe section structure in the preferred embodiment of the utility model;

[0023] Figure 6 It is the schematic view of the snap groove section structure in the preferred embodiment of the utility model.

[0024] Reference signs:

[0025] 1, connecting pipe; 11, mounting hole; 12, sliding groove; 121, limiting groove; 122, snap groove; 123, fixed screw hole;

[0026] 2, stop bending pipe; 21, limiting block;

[0027] 3, lifting lug; 31, lifting lug hole; 32, snap ring; 321, connecting ring; 322, mounting shaft; 323, limiting ring. DETAILED DESCRIPTION

[0028] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0029] The embodiment provides a horizontal directional drilling offshore back-dragging stop bending structure, which comprises a stop bending pipe 2, a lifting lug 3 is fixedly installed at one end of the stop bending pipe 2, a snap ring 32 is connectedly installed at one end of the lifting lug 3, and the horizontal directional drilling offshore back-dragging stop bending structure further comprises a connecting pipe 1, a mounting hole 11 is formed in the side wall of the connecting pipe 1 in a penetrating mode, a plurality of stop bending pipes 2 are symmetrically connectedly installed in the mounting hole 11, a sliding groove 12 is symmetrically formed in the inner wall of the connecting pipe 1, the stop bending pipe 2 is used for adjusting the length of the stop bending structure by sliding along the sliding groove 12;

[0030] As shown in Figure 2 , Figure 5 , Figure 6 , a plurality of limiting grooves 121 in communication with the sliding groove 12 are symmetrically formed in the inner wall of the mounting hole 11, the stop bending pipe 2 is rotated, the limiting block 21 is rotated into the limiting groove 121, and the overall length of the stop bending structure is adjusted;

[0031] As shown in Figure 5 , Figure 6As shown, the inner side wall of the limiting groove 121 is provided with a clamping groove 122, the clamping groove 122 is perpendicular to the limiting groove 121, the clamping grooves 122 at both ends of the connecting pipe 1 are symmetrical, the buckling pipe 2 is symmetrically and slidingly installed in the connecting pipe 1, and the buckling pipe 2 is clamped into the symmetrically arranged clamping grooves 122 through the limiting block 21 to fix the position of the buckling pipe 2.

[0032] As shown in Figure 4 As shown, the arc wall of the buckling pipe 2 is symmetrically and fixedly provided with a plurality of limiting blocks 21 near the edge of one end, the limiting blocks 21 are clamped and installed in the sliding groove 12, and the buckling pipe 2 is slidingly installed in the sliding groove 12.

[0033] As shown in Figure 1 、 Figure 2 、 Figure 5 As shown, a plurality of fixed screw holes 123 communicating with the clamping grooves 122 are provided in the side wall of the connecting pipe 1, and the fixed screw holes 123 are screw-mounted with fixed bolts;

[0034] As shown in Figure 4 As shown, a round corner is provided at the edge of the limiting block 21, when the length of the buckling structure is changed, the limiting block 21 is slidingly installed in the sliding groove 12, and the buckling pipe 2 is slidingly installed to change the position of the buckling pipe 2; when the length of the buckling structure is fixed, the buckling pipe 2 is rotated, the limiting block 21 is slidingly installed in the limiting groove 121, the limiting block 21 is slidingly installed in the bottom of the limiting groove 121, the buckling pipe 2 is pulled outward, the limiting block 21 is clamped into the clamping groove 122, the fixed bolts in the fixed screw holes 123 are tightened, and the side wall of the limiting block 21 is tightly pressed by the fixed bolts to fix the position of the buckling pipe 2;

[0035] As shown in Figure 5 As shown, a plurality of inclined angles inclined to the limiting groove 121 are symmetrically provided at the slot opening of the limiting groove 121, and the inclined angles at the slot opening of the limiting groove 121 facilitate the rotation of the limiting block 21 in the limiting groove 121 when the buckling pipe 2 is rotated;

[0036] As shown in Figure 1 、 Figure 4 As shown, a lug hole 31 is provided in the side wall of the lug 3 near one side edge;

[0037] As shown in Figure 1 、 Figure 3 As shown, the clamping ring 32 is an arc structure, the clamping ring 32 is fixedly provided with a connecting ring 321 at both ends, and the buckling pipe 2 is connected with the back-acting tool and the back-acting pipeline through the clamping ring 32;

[0038] As shown in Figure 3 As shown, a mounting shaft 322 is inserted and installed between the connecting rings 321, a plurality of limiting rings 323 are symmetrically and fixedly installed at both ends of the mounting shaft 322, and the mounting shaft 322 is slidingly clamped in the lug hole 31.

[0039] The utility model discloses when using, the one side's stop bending pipe 2 is connected to the back -dragging tool through the lifting lug 3 and the snap ring 32, the other side's stop bending pipe 2 is connected to the pipeline to be back -dragged through the lifting lug 3 and the snap ring 32, and the overall length of the stop bending structure is adjusted by the limiting block 21 on the stop bending pipe 2 along the limiting groove 121 sliding, to be suitable for the ocean of different water depth. When the stop bending pipe 2 slides to the designated position, rotate the stop bending pipe 2, make the limiting block 21 rotate to the limiting groove 121, when the limiting block 21 rotates to the bottom of limiting groove 121, pull out the stop bending pipe 2 outward, the limiting block 21 is clamped in the stop slot 122, and the fixing bolt in the fixed screw hole 123 is screwed, and the fixing bolt is pressed against the side wall of the limiting block 21 to fix the position of the stop bending pipe 2, to adjust and fix the overall length of the stop bending structure, suitable for the ocean of different depth.

[0040] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has disclosed the above with the preferred embodiment, however, is not used to limit the utility model, any person skilled in the art, within the scope of the utility model technical scheme, can make a little more change or modification as equivalent embodiment of equivalent change with the above disclosed technical content, but as long as not departing from the utility model technical scheme content, according to the technical essence of the utility model, any brief introduction modification, equivalent change and modification of the above embodiment, still belongs to the scope of the utility model technical scheme.

Claims

1. A horizontal directional drilled offshore pullback buckling restrained structure comprising a buckling restrained tube (2), characterized in that, The end of the buckling pipe (2) is fixedly installed with a lifting lug (3), the end of the lifting lug (3) is clampedly installed with a clamping ring (32), and the buckling pipe (2) further comprises: The connecting pipe (1) is provided with a mounting hole (11) penetrating through the side wall, a plurality of buckling pipes (2) are symmetrically clampedly installed in the mounting hole (11), and the inner wall of the connecting pipe (1) is symmetrically provided with a sliding groove (12), the buckling pipe (2) slides along the sliding groove (12), and the length of the buckling structure is adjusted.

2. The horizontal directional drilled offshore pullback buckling restrained structure of claim 1, wherein, The inner wall of the mounting hole (11) is symmetrically provided with a plurality of limiting grooves (121) communicating with the sliding grooves (12).

3. The horizontal directional drilled offshore pullback buckling restrained structure of claim 2, wherein, The inner side wall of the limiting groove (121) is provided with a clamping groove (122), the clamping groove (122) is perpendicular to the limiting groove (121), and the clamping grooves (122) at the two ends of the connecting pipe (1) are symmetrical.

4. The horizontal directional drilled offshore pullback buckling restrained structure of claim 1, wherein, The arc wall of the buckling pipe (2) is symmetrically fixedly installed with a plurality of limiting blocks (21) near the edge of one end.

5. The horizontal directional drilled offshore pullback buckling restrained structure of claim 1, wherein, The side wall of the connecting pipe (1) is provided with a plurality of fixed screw holes (123) penetrating through and communicating with the clamping grooves (122), and the fixed screw holes (123) are screwedly provided with fixed bolts.

6. The horizontal directional drilled offshore pullback buckling restrained structure of claim 4, wherein, The edge of the limiting block (21) is provided with a round corner, when the length of the buckling structure is changed, the limiting block (21) is slidingly installed in the sliding groove (12), the buckling pipe (2) is slid to change the position of the buckling pipe (2), when the length of the buckling structure is fixed, the buckling pipe (2) is rotated, the limiting block (21) slides into the limiting groove (121), when the limiting block (21) slides to the bottom of the limiting groove (121), the limiting block (21) is clamped into the clamping groove (122), so that the position of the buckling pipe (2) is fixed.

7. The horizontal directional drilled offshore pullback buckling restrained structure of claim 2, wherein, The limiting groove (121) is symmetrically provided with an inclined angle inclined into the limiting groove (121) at the slot opening.

8. The horizontal directional drilled offshore pullback buckling restrained structure of claim 1, wherein, The side wall of the lifting lug (3) is provided with a lifting lug hole (31) penetrating through near one side edge.

9. The horizontal directional drilled offshore pullback buckling restrained structure of claim 1, wherein, The clamping ring (32) is in an arc shape, and the clamping ring (32) is fixedly provided with a connecting ring (321) at each end.

10. The horizontal directional drilled offshore pullback buckling restrained structure of claim 9, wherein, The connecting rings (321) are insertedly installed with a mounting shaft (322), a plurality of limiting rings (323) are symmetrically fixedly installed at the two ends of the mounting shaft (322), and the mounting shaft (322) is slidingly clamped in the lifting lug hole (31).

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