CN2202238Y - Quick-connecting joint for oil pipes - Google Patents

Abstract

The utility model relates to a quick connection joint for choked through oil pipes, which is composed of a body, clamping jaws, a cylinder sleeve, a piston, a seal plug, springs, a valve, etc., wherein the hook heads of the clamping laws clamp a circular bead of an oil pipe coupling from the outside, pressurized water pushes the piston, and the seal joint of the seal plug and the annular space of the oil pipe are connected with each other; then, the pressurized water opens the valve, flows into the oil pipes and sweeps away blocking articles, such as wax, oil, etc. The oil pipes can be choked through without screwing. The joint has the advantages of simple structure and safe, fast and convenient use.

Description

Quick-connecting joint for oil pipes

The utility model relates to the effective quick-connecting joint of a kind of wash oil, particularly suppresses the quick-connecting joint that oil pipe is used.

In the oil well operation, have by wax deposition or solidify crude oil during the oil pipe that trips out and stop up, the oil pipe of going into the well then requires its unimpeded cleaning, the oil pipe light that has stopped up is suppressed it with water with pressure logical, with steam the wax on the tube wall, wet goods dirt removal are fallen, to suppress the used joint of oil pipe usually be an end band oil tube buckle, one end band union head, whenever suppress an oil pipe must on unload oil tube buckle and on unload union one time, waste time and energy, influence job scheduling.

The purpose of this utility model is to overcome the deficiency of above-mentioned background technology, and a kind of quick-connecting joint of suppressing the handy and safe that leads to the oil pipe that is stopped up by wax, oil is provided, and need not button and can satisfy its job requirements.

The purpose of this utility model is achieved in that and connects " H " shape support on the tubular body of joint, symmetry is protruded two pairs of earrings with parallel pin-and-hole on the support, at body outer axial direction two claws are arranged, the claw front end is (before oil pipe is, be the arcuation gib head down together), the rear end is a handle, a rectangular slot is opened at the middle part, run through a pin-and-hole perpendicular to rectangular slot, penetrate pin-and-hole on the claw and the internal diameter of the torsion spring in the rectangular slot is assembled on the pin-and-hole of support earrings with pin, torsion spring one end bearing handgrip, one end is fixed on the support, the body front end also connects a cylinder sleeve, one annular piston is arranged in the cylinder sleeve, adorn a cylindrically coiled spring in the front space that piston and cylinder sleeve are formed, piston forward is stretched out cylinder sleeve and is formed a hollow long handle, there is a waist drum shape sealing plug at the place at the anterior shoulder of long handle, be fixed on the long handle with pressure cap, connect a tubbiness supporting positive cover at the piston rear portion, the supporting positive cover front end has valve for being inverted valve seat on the valve seat, cover one helical spring on the rearward extending valve bar of valve, spring one end is pressed on the supporting positive cover, the other end nut compressing that is contained in valve bar end.Water with pressure pushes away before with piston, makes the annular space of sealing plug SEALING FITTING and oil pipe, along with water with pressure is opened valve and enter in the oil pipe, its obstruction is pushed away away, to reach the purpose of suppressing oil pipe.

The utlity model has simple in structurely, easy to use and reliable, adopt this joint to suppress oil pipe, to increase work efficiency greatly than it former joint of forming with screw thread and union, the latter needs two people's compounding practices, per hour suppresses about 30 of oil pipe, and the former only needs one man operation, per hour can suppress logical nearly hundred, the amount of labour be original half, and efficient is original three times, has alleviated labor intensity, shorten the field work time, thereby operating cost is reduced.

Fig. 1 is the utility model structural profile schematic representation.

Fig. 2 is that Figure 1A is to partial view.

Below in conjunction with accompanying drawing the utility model is further described:

Thisly suppress the quick-connecting joint that oil pipe is used, it comprises body, cylinder sleeve, piston, the parts such as sealing-plug, its tubular body 2 outer anterior " H " shape supports 8 that connect, two pairs of earrings 20 that parallel pin-and-hole is arranged of symmetrical protrusion on the support 8, at body 2 outer axis directions two claws 12 are arranged, claw 12 front ends are arcuation gib head 18, the rear end is handgrip 3, there is rectangular slot 19 at the middle part, run through a pin-and-hole perpendicular to rectangular slot 19, the internal diameter that penetrates the torsion spring 7 in pin-and-hole on the claw 12 and the rectangular slot 19 with pin 9 is assembled on the pin-and-hole of earrings 20 of support 8, torsion spring 7 one end bearing handgrips 3, one end is fixed on the support 8, body 2 front ends also connect a cylinder sleeve 13, one annular piston 11 is arranged in the cylinder sleeve 13, the in-built cylindrically coiled spring 14 of front space of piston 11 and cylinder sleeve 13, piston 11 stretches out forward cylinder sleeve 13 and forms a hollow long handle 15, there is a waist drum shape sealing-plug 16 at 15 anterior shoulder places at long handle, be fixed on the long handle 15 with pressure cap 17, connect supporting positive cover 6 at piston 11 rear portions, supporting positive cover 6 front ends are for being inverted valve seat, valve seat has valve 10, at valve 10 rearward extending valve bar 4 covers one helical springs 5, spring 5 one side pressures are on supporting positive cover 6, and the other end compresses with the nut 1 of valve bar 4 ends. Gib head 18 vertical section angles are 80 °～88 °. Supporting positive cover 6 is tubbiness, and there are 2～4 liquid flow hole grooves at the middle part, and rear neck internal diameter is slightly larger than the external diameter of valve bar 4.

This joint mainly is to utilize a pair of claw to block the shoulder of oil pipe body and box cupling from the outside, is realized being connected by waist drum shape sealing-plug seal nipple and the annular space of oil pipe then. Therefore, the arc gib head of claw front end should be complementary with the tubing coupling shoulder of colluding card, it is firm for the gib head card is got, angle on the gib head vertical section is slightly less than 90 degree, claw also penetrates a torsion spring when being fixed on the pin-and-hole of " H " shape support earrings with pin, torsion spring one end bearing also lifts the claw handgrip, and the other end is stuck on the support, makes the claw gib head have one to the power of axle center fastening. Joint body front end also connects a cylinder sleeve, and the outside piston in cylinder sleeve has " O " type packing groove and " O " type packing is housed, and makes piston and cylinder sleeve sliding Movable sealing. The hollow long handle that piston and its stretch out forward cylinder sleeve forms a space with cylinder sleeve, and this empty gap leaves outside the position that pushes away before the piston, also fills by compression a garden post helical spring, pushes away before the piston, recompresses spring, and its effect is to reset after making the piston release. Fill a waist drum shape sealing-plug at the shoulder place of piston hollo long handle front portion, be fixed in the long handle front end with the locking pressure cap, the sealing-plug end conical surface is sealing surface, supporting positive cover is connected with the piston rear portion with screw thread, supporting positive cover is tubbiness, and front end is inverted valve seat, and there are 2～4 liquid flow hole grooves at the middle part, rear neck internal diameter dwindles and is slightly larger than the valve shank diameter, works the valve effect of setting upright. Valve bar inner sleeve one helical spring is regulated with the nut of valve bar end, with guarantee that piston is pushed earlier and sealing-plug Seal Oil pipe ring shape space after, valve just is opened. The joint body is atmospheric valve of bypass also, its rear portion with come the water high-pressure hose to join. During work, joint is to entering tubing coupling, after claw blocks the tubing coupling shoulder from the outside, start water pump, water with pressure enters in the joint, although valve and piston bear pressure simultaneously, but the spring on the Yin Faner bar is through the adjusting of nut, the pressure that valve bears is increased, thus piston be pushed earlier, behind the annular space of plug sealing oil pipe to be sealed, rising along with pressure of supply water, valve is opened, and water with pressure enters its tamper of displacement in the oil pipe, leads to until oil pipe is suppressed. When oil pipe suppress logical after, the pump and open atmospheric valve of cutting off the water, meanwhile the spring on the valve bar resets valve, the spring in the cylinder sleeve makes piston reset. Sealing-plug is pinched the handgrip of two claws hold together along with retreating deblocking, and the claw gib head opens, and joint can be extracted out from tubing coupling, suppresses the oil pipe operation thereby finish.

Embodiment: the size of attachment portions such as the claw of this joint, support, pin should determine that firm for the claw card is got to satisfy requirement of strength, the angle of its vertical part surface gib head is slightly less than 90 degree according to suppressing the maximum pressure of oil pipe, spends for good with 80 degree～88.Sealing plug is the rubber product of waist drum shape.Working surface is 90 degree cone angle faces.Its maximum diameter is greater than company pipe aperture 3mm, with connected 21/2 oil pipe be example, piston external diameter 65mm, 2 roads " O " type packing is arranged, piston hollo long handle internal diameter 26mm, valve seat minimum diameter 27mm, valve bar external diameter 12mm, supporting positive cover has 4 wide 8mm, long 36mm tank, sealing plug external diameter 65mm.

Claims (3)

1, a kind ofly suppress the quick-connecting joint that oil pipe is used, it comprises body, cylinder sleeve, piston, parts such as sealing plug, it is characterized in that outer anterior " H " shape support (8) that connects of tubular body (2), support (8) is gone up symmetry and is protruded two pairs of earrings (20) that parallel pin-and-hole is arranged, axial direction has two claws (12) in body (2) outer, claw (12) front end is arcuation gib head (18), the rear end is handgrip (3), there is rectangular slot (19) at the middle part, run through a pin-and-hole perpendicular to rectangular slot (19), the internal diameter that penetrates the torsion spring (7) in pin-and-hole on the claw (12) and the rectangular slot (19) with pin (9) is assembled on the pin-and-hole of earrings (20) of support (8), torsion spring (7) one end bearing handgrips (3), one end is fixed on the support (8), body (2) front end also connects a cylinder sleeve (13), one annular piston (11) is arranged in the cylinder sleeve (13), adorn a cylindrically coiled spring (14) in the front space of piston (11) and cylinder sleeve (13), piston (11) stretches out cylinder sleeve (13) forward and forms a hollow long handle (15), there is a waist drum shape sealing plug (16) at the place at the anterior shoulder of long handle (15), be fixed on the long handle (15) with pressure cap (17), connect supporting positive cover (6) at piston (11) rear portion, supporting positive cover (6) front end is for being inverted valve seat, valve seat has valve (10), go up cover one helical spring (5) at the rearward extending valve bar of valve (10) (4), spring (5) one ends are pressed on the supporting positive cover (6), and the other end compresses with the terminal nut (1) of valve bar (4).

2, according to claim 1ly suppress the quick-connecting joint that oil pipe is used, it is characterized in that gib head (18) longitudinal section angle is 80 °～88 °.

3, according to claim 1ly suppress the quick-connecting joint that oil pipe is used, it is characterized in that supporting positive cover (6) is tubbiness, there are 2～4 liquid flow hole grooves at the middle part, and back neck internal diameter is slightly larger than the external diameter of valve bar (4).

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