CN-116658714-B - Continuous pipe multi-section detachable pressure test joint device and use method thereof

CN116658714BCN 116658714 BCN116658714 BCN 116658714BCN-116658714-B

Abstract

The invention discloses a continuous pipe multi-section detachable pressure test joint device which comprises a tubular joint inner core, a plurality of cascade tubular joint extension cores, a plate-shaped blind plate assembly, a half sleeve assembly and a plurality of cascade extension sleeve assemblies, wherein the joint inner core is arranged in an inner hole of a composite pipe, the joint extension cores are arranged in the inner hole of the composite pipe, the joint extension cores are positioned at the tail parts of the joint inner cores, the half sleeve assembly is arranged on the outer layer of the composite pipe, the extension sleeve assemblies are arranged on the outer layer of the composite pipe, and the head end faces of the extension sleeve assemblies tightly prop against the tail end faces of the half sleeve assemblies. The multi-section detachable pressure test connector device for the continuous pipe adopts a connector extension core and an extension sleeve assembly which can be connected in a cascade manner, can effectively increase the locking length, improves the anti-sliding and anti-leakage capabilities of the connector, and is suitable for pressure test of connectors with different pressure levels.

Inventors

HUANG YUZHONG
ZOU CISHENG
NIU MINGCHANG
YAN ZHIQIANG
ZHANG LIANG
LI HUI
QIAN GUOHUA
HE ZHENXING

Assignees

安徽优耐德管道技术有限公司

Dates

Publication Date: 20260508
Application Date: 20230605

Claims (9)

1. A multi-section detachable pressure test joint device of a continuous pipe is characterized by comprising a tubular joint inner core (6), a plurality of connected tubular joint extension cores (9), a plate-shaped blind plate assembly (5), a half sleeve assembly (1) and a plurality of connected extension sleeve assemblies (7), The joint inner core (6) is arranged in the inner hole of the composite pipe (10), the joint inner core (6) is tightly contacted with the inner layer of the composite pipe (10), The joint extension core (9) is arranged in the inner hole of the composite pipe (10), the joint extension core (9) is positioned at the tail part of the joint inner core (6), the joint extension core (9) is detachably connected with the joint inner core (6), the joint extension core (9) is tightly contacted with the inner layer of the composite pipe (10), The blind plate component (5) is arranged on the end face of the composite pipe, the blind plate component (5) is welded with the joint inner core (6), The half sleeve assembly (1) is arranged on the outer layer of the composite pipe (10), the half sleeve assembly (1) is tightly contacted with the blind plate assembly (5), The lengthening sleeve component (7) is arranged on the outer layer of the composite pipe (10), the head end face of the lengthening sleeve component (7) tightly abuts against the tail end face of the half sleeve component (1), The outer wall of the joint inner core (6) is provided with a plurality of inner core bevel gear shapes (61) and a plurality of first sealing ring grooves (62), the inner core bevel gear shapes (61) squeeze the inner layer of the composite pipe (10), the first sealing ring grooves (62) are internally provided with first O-shaped sealing rings (63), the tail part of the joint inner core (6) is provided with connecting internal threads (64), The outer wall of the joint extension core (9) is provided with a plurality of extension bevel tooth profiles (91) and a plurality of second sealing ring grooves (92), the extension bevel tooth profiles (91) extrude the inner layer of the composite pipe (10), the second sealing ring grooves (92) are internally provided with second O-shaped sealing rings (11), the head part of the joint extension core (9) is provided with connecting external threads (93), the connecting external threads (93) are matched with the connecting internal threads (64), the inner side of the tail part of the joint extension core (9) is provided with extension threads (94), the extension threads (94) are matched with the connecting external threads (93), The center of the blind plate assembly (5) is provided with a blind plate screw hole (51), The half sleeve assembly (1) comprises a pair of detachable half sleeves (100), a plurality of half bevel gear shapes (101) are arranged on the inner wall of each half sleeve (100), the half bevel gear shapes (101) extrude the outer layer of the composite pipe (10), two sides of each half sleeve (100) are welded with half support legs (2), each half support leg (2) is provided with a plurality of half support leg holes (21), the ends of each half support leg (2) are welded with half locking lugs (4), a pair of half lug holes (41) are arranged on the circumference of each half locking lug (4), a plurality of half rib plates (3) are arranged between each half support leg (2) and the outer wall of each half sleeve (100), The extension sleeve subassembly (7) contain a pair of detachable extension half sleeve (700), the inner wall of extension half sleeve (700) on be equipped with a plurality of extension awl tooth profile (701), extension awl tooth profile (701) extrusion the skin of compound pipe (10), extension half sleeve (700) both sides all weld extension stabilizer blade (8), extension stabilizer blade (8) on be equipped with a plurality of extension stabilizer blade holes (81), the tip of extension stabilizer blade (8) weld extension lock lug (702), extension lock lug (702) circumference on be equipped with a pair of extension ear hole (703), extension stabilizer blade (8) with extension half sleeve (700)'s outer wall between be equipped with a plurality of extension gusset (704), extension half sleeve (700) outer wall on all be equipped with a pair of independent locked groove (16), locked groove (16) on all be equipped with a pair of locked groove hole (161), locked groove hole (161) in be equipped with groove (17), extension sleeve (702) circumference on be equipped with a pair of extension gusset (704) between half sleeve (700) outer wall between half sleeve (700) and half sleeve (161).
2. The continuous tube multi-section detachable pressure testing joint device according to claim 1, wherein the tooth top center of the half cone tooth profile (101) coincides with the tooth root center position of the extension cone tooth profile (91).
3. The multi-section removable pressure test connector assembly of claim 1 wherein said half sleeve (100) and said extension half sleeve (700) are connected by a fastener assembly (S).
4. A coiled tubing multi-section detachable pressure testing joint device according to claim 3, wherein the fastening assembly (S) comprises a hexagon socket head cap screw (12), a plain washer (13), a spring washer (14) and a hexagon nut (15).
5. The coiled tubing multi-section removable pressure test joint device according to claim 1, wherein said haff cone tooth profile (101) is coincident with the axial center of said core cone tooth profile (61).
6. The continuous tube multi-section detachable pressure testing joint device according to claim 1, wherein the tooth top center of the half cone tooth profile (101) coincides with the tooth root center position of the extension cone tooth profile (91).
7. The continuous tube multi-section detachable pressure test joint device according to claim 1, wherein the cone angle of 20-30 degrees is adopted by the inner core cone tooth profile (61), the extension cone tooth profile (91), the half cone tooth profile (101) and the extension cone tooth profile (701), the tooth depth is 1.5 mm-2.5 mm, and the tooth width is 13 mm-20 mm.
8. The continuous tube multi-section detachable pressure testing joint device according to claim 1, wherein the groove width of the first sealing ring groove (62) and the second sealing ring groove (92) is 2.9 mm-3.8 mm, the groove depth is 1.7 mm-2.7 mm, and the section diameters of the first O-shaped sealing ring (63) and the second O-shaped sealing ring (11) are 2.65mm or 3.55mm.
9. A method of using the coiled tubing multi-section removable pressure test connector device of claim 4, comprising the steps of: s1, installing a first O-shaped sealing ring (63) in a first sealing ring groove (62) of a joint inner core (6), and installing a second O-shaped sealing ring (11) in a second sealing ring groove (92) of a joint extension core (9); s2, screwing a primary or multistage joint extension core (9) on the tail part of the joint inner core (6) by utilizing a connecting inner thread (64) and a connecting outer thread (93); Step S3, pressing the joint inner core (6) into an inner hole of the composite pipe (10); s4, sleeving one half sleeve (100) in the half sleeve assembly (1) on the upper side of the outer surface of the composite pipe (10), fixing the other half sleeve (100) by hand, sleeving the other half sleeve on the corresponding lower side of the composite pipe (10), and then completing the assembly of the half sleeve assembly (1) by utilizing the fastening assembly (S); s5, moving the half sleeve assembly (1) to enable the half sleeve assembly (1) to be tightly attached to the end face of the joint inner core (6), and locking the half sleeve assembly (1); s6, mounting one-stage or multi-stage lengthening sleeve assemblies (7) on the composite pipe (10), and completing the assembly of the lengthening sleeve assemblies (7) by using the fastening assemblies (S); S7, moving the lengthened sleeve assembly (7) to enable the lengthened sleeve assembly (7) to be tightly attached to the half sleeve assembly (1), then lightly rotating the direction of the lengthened sleeve assembly (7) to enable the lengthened lock lugs (702) of the lengthened sleeve assembly (7) to be consistent with the half lock lugs (4) of the half sleeve assembly (1), and finally locking the lengthened sleeve assembly (7); And S8, installing locking grooves (16) at the positions of the half locking lugs (4) of the half sleeve assembly (1) and the lengthening locking lugs (702) of the lengthening sleeve assembly (7), and inserting locking groove bolts (17) between the half lug holes (41) and the lengthening lug holes (703).

Description

Continuous pipe multi-section detachable pressure test joint device and use method thereof Technical Field The invention relates to a pipe fitting, in particular to a multi-section detachable pressure test joint device of a continuous pipe. Background At present, a buckling joint or a common detachable joint is adopted for pressure test of the continuous pipe. The buckling joint consists of a joint inner core and a sleeve, is connected with the composite pipe through the inner expansion and the outer buckling of special buckling equipment, has the same caliber and multiple pressure levels, increases the length of the joint inner core and the sleeve along with the pressure level, is also multiple in buckling joint, cannot be reused after the pressure test is completed, and has high test cost and large waste. The common detachable joint is composed of a blind plate and a half sleeve, the composite pipe is clamped tightly through the firmness of a plurality of bolts, although the detachable joint is repeatedly used, in order to adapt to different pressure levels, the length of the joint inner core and the length of the half sleeve are designed to be longer, when the bolts are fastened, the bolts are stressed differently and cannot be clamped effectively, the test is carried out frequently, meanwhile, the inner surface of the clamping sleeve and the outer surface of the joint inner core are generally provided with common triangular or rectangular tooth grooves, the teeth are shallow, the composite pipe cannot be extruded and embedded effectively, the axial force is poor, and the joint is easy to slip. When the common detachable joint is used for low pressure, compared with a special low pressure test joint, the joint is overlong in length, heavier in weight and low in assembly and disassembly efficiency. Disclosure of Invention In view of the foregoing, it is desirable to provide a coiled tubing multi-section detachable pressure testing joint device. In order to solve the technical problems, the invention adopts the following technical scheme: A multi-section detachable pressure test joint device of a continuous pipe is characterized in that the multi-section detachable pressure test joint device of the continuous pipe comprises a tubular joint inner core, a plurality of cascade tubular joint extension cores, a plate-shaped blind plate assembly, a half sleeve assembly and a plurality of cascade extension sleeve assemblies, The joint inner core is arranged in the inner hole of the composite pipe and is tightly contacted with the inner layer of the composite pipe, The joint extension core is arranged in the inner hole of the composite pipe, the joint extension core is positioned at the tail part of the joint inner core, the joint extension core is detachably connected with the joint inner core, the joint extension core is tightly contacted with the inner layer of the composite pipe, The blind plate component is arranged on the end face of the composite pipe and is welded with the joint inner core, The half sleeve component is arranged on the outer layer of the composite pipe and is tightly contacted with the blind plate component, The lengthened sleeve assembly is arranged on the outer layer of the composite pipe, and the end face of the head of the lengthened sleeve assembly tightly abuts against the end face of the tail of the half sleeve assembly. As a preferred embodiment of the present invention, The outer wall of the joint inner core is provided with a plurality of inner core bevel gear shapes and a plurality of first sealing ring grooves, the inner core bevel gear shapes extrude the inner layer of the composite pipe, the first sealing ring grooves are internally provided with first O-shaped sealing rings, the tail part of the joint inner core is provided with connecting internal threads, The outer wall of the joint extension core is provided with a plurality of extension bevel gear shapes and a plurality of second sealing ring grooves, the extension bevel gear shapes extrude the inner layer of the composite pipe, the second sealing ring grooves are internally provided with second O-shaped sealing rings, the head part of the joint extension core is provided with connecting external threads, the connecting external threads are matched with the connecting internal threads, the inner side of the tail part of the joint extension core is provided with extension threads, the extension threads are matched with the connecting external threads, The center of the blind plate component is provided with a blind plate screw hole, The half sleeve component comprises a pair of detachable half sleeves, a plurality of half bevel gear shapes are arranged on the inner wall of each half sleeve, the half bevel gear shapes extrude the outer layer of the composite pipe, two sides of each half sleeve are welded with half support legs, each half support leg is provided with a plurality of half support leg holes, the ends of each ha