SUPPORT DEVICE FOR ROTATION OF HIGH-CAPACITY AND COMPACT DRILL PIPE STORAGE UNIT OF SEABED DRILLING RIG IN LYING STATE

Abstract

A support device for the rotation of a high-capacity and compact drill pipe storage unit of a seabed drilling rig in a lying state, including: a rack, a plurality of curved support frames, a plurality of lateral drill pipe stoppers and a plurality of annular fences. The curved support frames are provided parallelly and coaxially on a slideway of the rack. A separating plate is provided on each of the curved support frames. A curved support surface of each of the curved support frames is in contact with a circular edge surface of the corresponding separating plate. The annular fences are mounted on the rack. Each of the annular fences is provided with a first gap and a second gap. The first gap is provided corresponding to the lateral drill pipe stopper. The second gap is configured to allow the drill pipes enter and exit the drill pipe storage unit.

Claims

1. A support device for the rotation of a compact drill pipe storage unit of a seabed drilling rig in a lying state, comprising: a rack; a plurality of curved support frames; a plurality of lateral drill pipe stoppers; and a plurality of annular fences; wherein the plurality of curved support frames parallel to each other are coaxially fixed on a slideway of the rack; each of the curved support frames is provided with a separating plate; a curved support surface of each of the curved support frames is in contact with a circular edge surface of the corresponding separating plate; the separating plate is configured for an auxiliary support for the rotation of the drill pipe storage unit and drill pipes stored therein; the annular fences are provided on the rack; an inner diameter of the annular fences is larger than an outer diameter of the drill pipe storage unit; the annular fences are coaxial with the drill pipe storage unit; each of the annular fences is provided with a first gap and a second gap; the lateral drill pipe stoppers are fixedly provided on the rack respectively corresponding to the first gap; a side surface of each of the lateral drill pipe stoppers toward the drill pipe storage unit is curved and coaxial with the separating plate; and the second gap is configured to allow the drill pipes to enter and exit the drill pipe storage unit; each of the curved support frames comprises a base plate, an inverted triangular beam and an arc plate; wherein the base plate is provided on the slideway of the rack; the inverted triangular beam is provided on the base plate; and the arc plate is provided on the inverted triangular beam; a curved groove is provided on a top surface of the arc plate; the curved groove is provided with a plurality of rollers or a curved sliding block respectively having a lubrication mechanism; and a circumscribed circle surface formed by the rollers or an inner curve surface of the sliding block forms a rolling or sliding support for an outer circular surface of the separating plate; and the rack comprises an upper cross beam and a lower cross beam; ends of the upper cross beam and ends of the lower cross beam are connected through a vertical beam, respectively.

2. The support device of claim 1, wherein each of the curved support frames comprise an arc bar; the arc bar is provided on the top surface of the arc plate, and the curved groove is provided on the arc bar.

3. The support device of claim 1, wherein a support regulating mechanism is provided between the arc plate and the inverted triangular beam; the support regulating mechanism comprises an adjusting plate and a waist-shaped hole provided on the arc plate; the adjusting plate is horizontally fixed on the arc plate; the adjusting plate is provided with a first bolt hole and is connected to a top of the inverted triangular beam through an adjusting bolt; the inverted triangular beam is provided with a second bolt hole corresponding to the waist-shaped hole on the arc plate; and the inverted triangular beam is connected to the arc plate via a fastening bolt.

4. The support device of claim 1, wherein each of the lateral drill pipe stoppers comprises an upper stopper, a first connecting pipe, a connecting rod, a second connecting pipe, a curved baffle and a lower stopper; wherein the second connecting pipe is larger than the first connecting pipe in length; the upper stopper is fixed on a bottom surface of the upper cross beam; the lower stopper is fixed on an upper end surface of the lower cross beam; a bottom of the upper stopper is connected to a first concave slot on a top of the first connecting pipe; a threaded hole is provided at a bottom of the first connecting pipe and is in threaded connection with a first threaded rod on an upper end of the connecting rod; a second threaded rod is provided on a lower end of the connecting rod and is in threaded connection with a second threaded hole on a top of the second connecting pipe; a second concave slot at a bottom of the second connecting pipe is connected with a top of the lower stopper; the curved baffle is welded on the second connecting pipe; and a side surface of the curved baffle is curved and coaxial with the drill pipe storage unit.

5. The support device of claim 1, wherein each of the annular fences comprises an upper curved railing, a lower curved railing and two elastic opening-closing mechanisms; an upper surface of the upper curved railing is mounted on the upper cross beam via a first mounting plate; a lower surface of the lower curved railing is mounted on the lower cross beam via a second mounting plate; the upper and lower curved railings are coaxial with the drill pipe storage unit; the upper and lower curved railings together form each of the annular fences with the first and second gaps; the first gap is provided towards each of the lateral drill pipe stoppers to prevent the drill pipes from falling out through the first gap; and at the second gap, the two elastic opening-closing mechanisms are respectively provided on the upper and lower curved railings at an end close to the second gap.

6. The support device of claim 1, wherein each of the two elastic opening-closing mechanisms comprises a fixing plate, a spring stop and a sphere stop; the fixing plate is provided with a waist-shaped hole; the fixing plate is fixed on the end of each of the upper and lower curved railings close to the second gap via the waist-shaped hole and a bolt; the sphere stop is provided on the fixing plate via the spring stop; and an axis of the spring stop is perpendicular to the fixing plate.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 is a schematic diagram of a support device for the rotation of a high-capacity and compact drill pipe storage unit of a seabed drilling rig in a lying state according to the present invention.

[0029] FIG. 2 schematically shows the arrangement of a curved support frame and a separating plate of the support device according to the present invention.

[0030] FIG. 3 schematically shows where the support device is provided on a seabed drilling rig according to the present invention.

[0031] FIG. 4 illustrates the curved support frame according to Embodiment 1 of the present invention, when viewed from the front.

[0032] FIG. 5 illustrates the curved support frame according to Embodiment 1 of the present invention, when viewed from the rear.

[0033] FIG. 6 illustrates the curved support frame according to Embodiment 2 of the present invention, when viewed from the front.

[0034] FIG. 7 is a schematic diagram of a lateral drill pipe stopper of the support device according to the present invention.

[0035] FIG. 8 is a schematic diagram of the lateral drill pipe stopper after disassembled according to the present invention.

[0036] FIG. 9 is a schematic diagram of an annular fence of the support device according to the present invention.

[0037] FIG. 10 illustrates an elastic opening-closing mechanism of the annular fence of the support device according to the present invention, when viewed from the front.

[0038] In the drawings, 1-curved support frame, 101-base plate, 102-inverted triangular beam, 103-arc plate, 104-arc bar, 105-roller, 106-waist-shaped hole, 107-fastening bolt, 108-adjusting bolt, 109-adjusting plate, 110-curved sliding block, 2-lateral drill pipe stopper, 201-upper stopper, 202-first connecting pipe, 203-connecting rod, 204-second connecting pipe, 205-curved baffle, 206-lower stopper, 3-annular fence, 301-upper curved railing, 302-elastic opening-closing mechanism, 30201-fixing plate, 30202-spring stop, 30203-sphere stop, 303-lower curved railing, 4-first mounting plate, 5-rack, 501-upper cross beam, 502-lower cross beam, 503-slideway, 6-drill pipe storage unit, 601-separating plate, 7-second mounting plate.

DETAILED DESCRIPTION OF EMBODIMENTS

[0039] The invention will be further described with reference to the accompanying drawings.

[0040] As shown in FIGS. 1-3, the invention provides a support device for the rotation of a high-capacity and compact drill pipe storage unit of a seabed drilling rig in a lying state, including: a rack 5, three curved support frames 1, three lateral drill pipe stoppers 2 and three annular fences 3. It should be understood that the curved support frames 1, the lateral drill pipe stoppers 2 and the annular fences 3 may be different in number. The rack 5 includes an upper cross beam 501 and a lower cross beam 502. Ends of the upper crossbeam 501 and ends of the lower crossbeam 502 are connected through a vertical beam, respectively. The curved support frames 1 parallel to each other are coaxially fixed on a slideway 503 of the rack 5. A separating plate 601 is provided on each of the curved support frames 1, and a curved support surface of each of the curved support frames 1 is in contact with a circular edge surface of the corresponding separating plate 601. The separating plate 601 is configured for an auxiliary support for the rotation of the drill pipe storage unit and drill pipes stored therein.

[0041] As shown in FIGS. 4-6, each of the curved support frames 1 includes a base plate 101, an inverted triangular beam 102 and an arc plate 103. The base plate 101 is provided on the slideway 503 of the rack 5. The inverted triangular beam 102 is provided on the base plate 101. The arc plate 103 is provided on the inverted triangular beam 102. An arc bar 104 is further provided on a top surface of the arc plate 103 and has a U-shaped cross section. The curved groove of the arc bar is provided with a plurality of rollers 105 or a curved sliding block 110 with a lubrication mechanism. A circumscribed circle surface formed by the rollers 105 or an inner curve surface of the sliding block 110 forms a rolling or sliding support for an outer circular surface of the separating plate 601.

[0042] As shown in FIG. 5, a support regulating mechanism is provided between the arc plate 103 and the inverted triangular beam 102, and the support regulating mechanism includes an adjusting plate 109 and a waist-shaped hole 106 provided on the arc plate 103. The adjusting plate 109 is horizontally fixed on the arc plate 103 and is perpendicular to the arc plate 103. A first bolt hole is provided on the adjusting plate 109, and the adjusting plate 109 is connected with a top of the inverted triangular beam 102 via the first bolt hole and an adjusting bolt 108. The inverted triangular beam 102 is provided with a second bolt hole corresponding to the waist-shaped hole 106 on the arc plate 103 and is connected to the arc plate 103 via the second bolt hole and a fastening bolt 107.

[0043] As shown in FIGS. 3, 7 and 8, the lateral drill pipe stoppers 2 are provided on the rack 5 and are parallel to the vertical beam. The lateral drill pipe stoppers 2 are provided between two vertical beams. A length of the drill pipe storage unit 6 is smaller than a distance between the two vertical beams. Each of the lateral drill pipe stoppers 2 includes an upper stopper 201, a first connecting pipe 202, a connecting rod 203, a second connecting pipe 204, a curved baffle 205 and a lower stopper 206, where the second connecting pipe 204 is larger than the first connecting pipe 202 in length. The upper stopper 201 is fixed on a bottom surface of the upper cross beam 501 of the rack 5, and the lower stopper 206 is fixed on an upper end surface of the lower cross beam 502 of the rack 5. The upper stopper 201 is connected to a first concave slot on a top of the first connecting pipe 202. A first threaded hole at a bottom of the first connecting pipe 202 is in threaded connection with a first threaded rod on an upper end of the connecting rod 203. A second threaded rod on a lower end of the connecting rod 203 is in threaded connection with a second threaded hole on a top of the second connecting pipe 204. A second concave slot at a bottom of the second connecting pipe 204 is connected with a top of the lower stopper 206; and the curved baffle 205 is welded on the second connecting pipe 204. A side surface of the curved baffle 205 is curved and coaxial with the drill pipe storage unit 6.

[0044] As shown in FIGS. 1, 3, 9 and 10, each of the annular fences 3 includes an upper curved railing 301, a lower curved railing 303 and two elastic opening-closing mechanisms 302. A reverse surface of the upper curved railing 301 is installed on the upper cross beam 501 via a first mounting plate 4; and a reverse surface of the lower curved railing 303 is installed on the lower cross beam 502 via a second mounting plate 7. The upper curved railing 301 and the lower curved railing 303 are coaxial with the drill pipe storage unit 6. A first gap and a second gap are generated on each of the annular fences 3 by the curved railing 301 and the lower curved railing 303. The first gap is provided towards each of the lateral drill pipe stoppers 2 to prevent the drill pipes from falling out through the first gap; and at the second gap, the two elastic opening-closing mechanisms 302 are respectively provided on the curved railing 301 and the lower curved railing 303 at an end close to the second gap. Each of the two elastic opening-closing mechanisms 302 includes a fixing plate 30201, a spring stop 30202 and a sphere stop 30203. The fixing plate 30201 is provided with a waist-shaped hole. The fixing plate 30201 is fixed on an end of each of the curved railing 301 and the lower curved railing 303 close to the second gap via the waist-shaped hole and a bolt. The sphere stop 30203 is provided on the fixing plate 30201 via the spring stop 30202. An axis of the spring stop 30202 is perpendicular to the fixing plate 30201.