CN2546627Y

CN2546627Y - Automatic rotary wellhead apparatus

Info

Publication number: CN2546627Y
Application number: CN 02236365
Authority: CN
Inventors: 俞坤; 宋旭东; 王波; 苗在朝
Original assignee: 苗在朝
Priority date: 2002-05-27
Filing date: 2002-05-27
Publication date: 2003-04-23
Anticipated expiration: 2012-05-27

Abstract

The utility model relates to an automatic rotary wellhead apparatus used for oil pumping of oil fields, which comprises a clip head, an inner tube, a connecting cap, a rotating tube, a worm gear, a thrust bearing, an endless screw, gland screws, a gland, a seal ring of the inner tube, a box body, a bearing seat, a blind flange, the seal ring of the rotating tube, a shielding cap, a bearing, connecting screws, a connecting sleeve, a clamping bolt A, nuts, a fixing bolt B, a ratchet box, a ratchet mechanism, preloading screws of a torsion spring, the torsion spring, a touching pole, keys, a ratchet cover and screws of the ratchet cover. When pumping oil, a pumping unit presses the touching pole at a time in each down stroke, and the touching pole drives the ratchet mechanism to rotate to cause the rotating tube to rotate and accordingly drive oil tubes in wells to rotate. The oil tube of the apparatus can automatically rotate when a pumping well is in use without artificial rotating. The utility model has the advantages of no increase of the workload and uniform rotatiion. The entire circumference of the oil tube attends the contact with a pumping pole, and the abrading section is dispersed to the whole inner surface of the oil tube, in order to avoid the generation of eccentric wear of the oil tube and improve the service life of the oil tube.

Description

Automatically rotate wellhead assembly

Technical field:

The utility model belongs to the mechanical device of oil field oil pumping usefulness, particularly a kind of automatic rotation wellhead assembly.

Background technology:

In the oil pumping system of oil field, R a T has relative contact movement, is certainly existing between sucker rod and the oil pipe and is rubbing, and the wearing and tearing of oil pipe also just inevitably occurred.Existing production wellhead and down-hole oil tube are fixedly connected, production wellhead is fixedly connected with sleeve pipe again, the friction position of R a T on circumference is constant, cause oil pipe to have only the position of a side to be worn on circumference, the time that oil pipe is worn through is short, causes the oil pipe leakage, take out not fuel-displaced, cause the oil well operation, increase operating cost, increase oil pipe consumption.The patent No. is 00247363.1 " rotation Production tree for pumping well ", can make the down-hole oil tube rotation, has alleviated the oil pipe wearing and tearing, is artificial rotation, and workload is big, rotates inhomogeneous.

Summary of the invention:

The purpose of this utility model is a kind of automatic rotation wellhead assembly of design, oil well oil pipe when oil pumping can be rotated automatically, the concentrated wear of oil pipe is distributed to whole circumference all participates in wearing and tearing, avoid the oil pipe eccentric wear, prolongation oil pipe wearing-in period at double, prolong the application life of oil pipe, reduce oil well operation number of times.

The purpose of this utility model be achieved in that it by clip head, interior pipe, connect cap, swivelling pipe, worm gear, thrust bearing, worm screw, gland screw, gland, interior seal of tube circle, casing, bearing support, blind flange, swivelling pipe sealing ring, retaining cap, bearing, joint bolt, coupling sleeve, set bolt A, nut, set bolt B, ratchet box, ratchet device, torsion spring pretension screw, torsion spring, touching lever, key, ratchet lid, ratchet lid screw and form.Pipe top in the clip head is connected in, its top connects with polished rod sealer.Interior pipe box is gone in the swivelling pipe, and by the gap of interior seal of tube circle sealed inner tube and swivelling pipe, is connected into one by connecting cap between interior pipe and swivelling pipe.Swivelling pipe inserts in worm gear, thrust bearing, bearing support, the blind flange, is sealed by the swivelling pipe sealing ring between blind flange and the swivelling pipe.The retaining cap is connected on the swivelling pipe, and is in below the blind flange.Swivelling pipe top shoulder seat is on worm gear, and the swivelling pipe bottom connects with the OIH pipe.The worm gear seat is on thrust bearing, and thrust metal is on bearing support, and bearing support is installed on the blind flange, worm gear and worm engaging, and worm screw, worm gear, thrust bearing, bearing support are placed in the casing.Casing peace seat is on blind flange, and blind flange is installed on the well head big four.Gland is fixed on the casing by gland screw.Bearing is installed in the wall box two ends, and worm screw is installed in the bearing, and worm screw also penetrates coupling sleeve, torsion spring, ratchet box, ratchet device, ratchet lid.Coupling sleeve one end is fixed on the casing by joint bolt, the coupling sleeve other end and torsion spring one end are fixed by set bolt A, the torsion spring other end is fixed on the ratchet box by set bolt B, ratchet device is installed in the ratchet box, on the ratchet box, ratchet device and worm screw are by key connecting by ratchet lid screw for the ratchet lid.Touching lever is installed in the ratchet box.

During oil pumping, each down stroke of oil pumper is pressed a touching lever, and touching lever drive ratchet device, ratchet close, the rotation of ratchet lid, make the worm screw rotation, and make worm gear, swivelling pipe rotation, thus the rotation of drive OIH pipe, and meanwhile, torsion spring produces and reverses storage power.When the oil pumper upstroke, torsion spring releases energy, and the drive ratchet closes, ratchet covers, the touching lever revolution, and ratchet device does not turn round.Therefore worm screw does not turn round, so the OIH pipe only rotates to a direction (clockwise).

The beneficial effects of the utility model are: pumpingh well oil pipe when work can rotate automatically, do not need artificial rotation, do not increase workload, rotation evenly, allow the oil pipe whole circumference all participate in and the contacting of sucker rod, make the abrading section be distributed to whole pipe inner surfaces, avoid oil pipe eccentric wear to occur, can improve the application life of oil pipe.

Description of drawings:

Fig. 1 is an agent set assembling drawing of the present utility model.

Fig. 2 is the utility model whirligig figure.

At Fig. 1, in 2: the 1st, the clip head, the 2nd, interior pipe, the 3rd, connect cap, the 4th, swivelling pipe, the 5th, worm gear, the 6th, thrust bearing, the 7th, worm screw, the 8th, gland screw, the 9th, gland, the 10th, interior seal of tube circle, the 11st, casing, the 12nd, bearing support, the 13rd, blind flange, the 14th, swivelling pipe sealing ring, the 15th, retaining cap, the 16th, bearing, the 17th, joint bolt, the 18th, coupling sleeve, the 19th, set bolt A, the 20th, nut, the 21st, set bolt B, the 22nd, the ratchet box, the 23rd, ratchet device, the 24th, torsion spring pretension screw, the 25th, torsion spring, the 26th, touching lever, the 27th, key, the 28th, the ratchet lid, the 29th, ratchet lid screw.

The specific embodiment:

Be described further below in conjunction with Fig. 1,2 couples of embodiment of the present utility model.

The utility model is by clip head 1, interior pipe 2, connect cap 3, swivelling pipe 4, worm gear 5, thrust bearing 6, worm screw 7, gland screw 8, gland 9, interior seal of tube circle 10, casing 11, bearing support 12, blind flange 13, swivelling pipe sealing ring 14, retaining cap 15, bearing 16, joint bolt 17, coupling sleeve 18, set bolt A19, nut 20, set bolt B21, ratchet box 22, ratchet device 23, torsion spring pretension screw 24, torsion spring 25, touching lever 26, key 27, ratchet lid 28, ratchet lid screw 29 is formed.Pipe 2 tops in clip head 1 is connected in, its top connects with polished rod sealer.In pipe 2 be inserted in the swivelling pipe 4, and by the gap of interior seal of tube circle 10 sealed inner tubes 2, between interior pipe 2 and swivelling pipe 4, be connected into one by connecting cap 3 with swivelling pipe 4.Swivelling pipe 4 inserts in worm gear 5, thrust bearing 6, bearing support 12, the blind flange 13, is sealed by swivelling pipe sealing ring 14 between blind flange 13 and the swivelling pipe 4.Retaining cap 15 is connected on the swivelling pipe 4, and is in below the blind flange 13.Swivelling pipe 4 top shoulder seats are on worm gear 5, and swivelling pipe 4 bottoms connect with the OIH pipe.Bearing support 12 is installed on the blind flange 13 6 of thrust bearings 5 on worm gear on bearing support 12 on thrust bearing 6, worm gear 5 and worm screw 7 engagements, and worm screw 7, worm gear 5, thrust bearing 6, bearing support 12 are placed in the casing 11.Casing 11 peace seats are on blind flange 13, and blind flange 13 is installed on the well head big four.Gland 9 is fixed on the casing 11 by gland screw 8.Bearing 16 is installed in casing 11 sidewall two ends, and worm screw 7 is installed in the bearing 16, and worm screw 7 also penetrates coupling sleeve 18, torsion spring 25, ratchet box 22, ratchet device 23, ratchet lid 28.Coupling sleeve 18 1 ends are fixed on the casing 11 by joint bolt, coupling sleeve 18 other ends and torsion spring 25 1 ends are fixed by set bolt A19, torsion spring 25 other ends are fixed on the ratchet box 22 by set bolt B, ratchet device 23 is installed in the ratchet box 22, ratchet lid 28 is fixed on the ratchet box 22 by ratchet lid screw 29, and ratchet device 23 is connected by key 27 with worm screw 7.Touching lever 26 is installed in ratchet box 22.

During oil pumping, each down stroke of oil pumper is pressed a touching lever 26, and touching lever 26 drives that ratchet devices 23, ratchet close 22,28 rotations of ratchet lid, make worm screw 7 rotations, and make worm gear 5, swivelling pipe 4 rotations, thereby drive the rotation of OIH pipe, meanwhile, torsion spring 26 produces and reverses storage power.When the oil pumper upstroke, torsion spring 26 releases energy, and drive ratchet and close 22 ratchets lid 28, touching lever 26 revolutions, and ratchet device 23 does not turn round.Therefore worm screw 7 does not turn round, so the OIH pipe only rotates to a direction (clockwise).

Claims

1, a kind of automatic rotation wellhead assembly of oil field oil pumping usefulness, by clip head (1), interior pipe (2), connect cap (3), swivelling pipe (4), worm gear (5), thrust bearing (6), worm screw (7), gland screw (8), gland (9), interior seal of tube circle (10), casing (11), bearing support (12), blind flange (13), swivelling pipe sealing ring (14), retaining cap (15), bearing (16), joint bolt (17), coupling sleeve (18), set bolt A (19), nut (20), set bolt B (21), ratchet box (22), ratchet device (23), torsion spring pretension screw (24), torsion spring (25), touching lever (26), key (27), ratchet lid (28), ratchet lid screw (29) is formed, it is characterized in that: clip head (1) is connected in interior pipe (2) top, interior pipe (2) is inserted in the swivelling pipe (4), and by the gap of interior seal of tube circle (10) sealed inner tube (2) with swivelling pipe (4), between interior pipe (2) and swivelling pipe (4), be connected into one by connecting cap (3), swivelling pipe (4) inserts worm gear (5), thrust bearing (6), bearing support (12), in the blind flange (13), seal by swivelling pipe sealing ring (14) between blind flange (13) and the swivelling pipe (4), retaining cap (15) is connected on the swivelling pipe (4), and be in below the blind flange (13), swivelling pipe (4) top shoulder seat is on worm gear (5), worm gear (5) seat is on thrust bearing (6), thrust bearing (6) seat is on bearing support (12), bearing support (12) is installed on the blind flange (13), worm gear (5) and worm screw (7) engagement, worm screw (7), worm gear (5), thrust bearing (6), bearing support (12) is placed in the casing (11), casing (11) peace seat is on blind flange (13), gland (9) is fixed on the casing (11) by gland screw (8), bearing (16) is installed in casing (11) sidewall two ends, worm screw (7) is installed in the bearing (16), worm screw (7) also penetrates coupling sleeve (18), torsion spring (25), ratchet box (22), ratchet device (23), ratchet lid (28), coupling sleeve (18) one ends are fixed on the casing (11) by joint bolt, coupling sleeve (18) other end and torsion spring (25) one ends are fixing by set bolt A (19), torsion spring (25) other end is fixed on the ratchet box (22) by set bolt B, ratchet device (23) is installed in the ratchet box (22), ratchet lid (28) is fixed on the ratchet box (22) by ratchet lid screw (29), and ratchet device (23) is connected by key (27) with worm screw (7).

2, automatic rotation wellhead assembly according to claim 1 is characterized in that touching lever (26) is installed on the ratchet box (22).