CN201196053Y

CN201196053Y - Double-supporting double-regulating automatic control type shaft mouth blowout preventer

Info

Publication number: CN201196053Y
Application number: CNU2008200900645U
Authority: CN
Inventors: 徐恩
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2009-02-18
Anticipated expiration: 2018-05-28

Abstract

The utility model relates to a double-supporting and double-adjusting self-controlled wellhead blowout preventer, which mainly solves the problems that a packing is eccentrically worn, the service life is short, the leakage of base oil of the wellhead easily occurs in an existing blowout preventing box. The blowout preventer is characterized in that cones (12, 23) and sealing pieces(11, 24) which are matched with the inclined surfaces of sealed tubes (10, 15) are orderly arranged on both ends of a spring (14), which are arranged on the outer side of a polished rod (28), sliding pieces (7, 25), an upper tapered drum (3) and a shell body (16) are orderly arranged on the tops of sealed tubes (10, 15), top rings (2, 18) are respectively arranged inside a pressure cap (1) and a lower joint (17), supports (4, 26) which are arranged on the lower portion of the top rings (2, 18) are matched with the inclined surfaces of the tapered drums (3, 20), and a plurality of rollers (5, 27) are arranged inside the supports (4, 26). The wellhead blowout preventer has the characteristics of avoiding the eccentric wear between the polished rod and the packing, thereby the service lives of the polished rod and the packing can be prolonged, and the leakage of base oil of the wellhead can be avoided.

Description

Two pair accent autocontrol wellhead blowout preventers of holding up

Technical field:

The utility model relates to the wellhead blowout preventer in a kind of oil field operation field, especially a kind of two two autocontrol wellhead blowout preventers of transferring of holding up.

Background technology:

Oil-extractor polish-rod is in running, because of being subjected to hole deviation and horse head movement in a curve double influence that skew and swing take place, the sealed packing wearing and tearing are quickened, caused former oil seepage of well head and frequent replacing sealed packing, not only polluted the well site environment but also increased maintenance cost.For improving the sealing effectiveness and the application life of well head blowout prevention box.Kind of oil pumper well head blowout prevention box surplus each oil field successively develops ten by its operating principle, can be divided into righting type, deviation adjustment type, fluid pressure type three major types.Leak, increase on application life at packing eccentric wear, well head, still can not solve the well head seepage fully the pollution of environment and the problems such as frequent replacing of sealed packing.

The utility model content:

For overcome packing eccentric wear in the existing well head blowout prevention box, application life short, easily cause the deficiency of the former oil seepage of well head, the utility model provides a kind of two two autocontrol wellhead blowout preventers of transferring of holding up, this wellhead blowout preventer has the advantages that sealing is reliable, avoid eccentric wear, can prolong the application life of polished rod and packing, prevent that the crude oil leakage from causing the well head environment pollution.

The technical solution of the utility model is: a kind of two two autocontrol wellhead blowout preventers of transferring of holding up, comprise pressure cap, lower contact, housing, polished rod, place the both ends of the spring of polished rod outside to be equipped with cone successively, the seal that matches with the sealed tube inclined-plane, on the sealed tube, all be equipped with joint ring in the low groove, the sealed tube top is equipped with slide plate respectively, slide plate top is equipped with upper conical-tube respectively, housing, all be equipped with rubber cushion in the two bottom groove, lower seal pipe bottom is equipped with the lower contact that connects housing and short circuit, pressure cap and lower contact inside are equipped with apical ring respectively, place the support of apical ring bottom to match with awl tube inclined-plane respectively, internal stent is equipped with several rollers.

Above-mentioned upper and lower roller is respectively 120 ° 3.

The utlity model has following beneficial effect: owing to take such scheme, by being equipped with equally distributed 3 rollers respectively in that this blowout hookup is upper and lower, can play the two-way effect of setting upright so that upper and lower roller is close to polished rod by screwing pressure cap and lower contact respectively; Promote upper conical-tube and go up slide plate to closely cooperate by screwing pressure cap,, make that upward sealed tube can be done radial displacement to guarantee end face seal again by the regulating action power of rubber cushion with the last sealed tube that poly-polytetrafluoroethylsealed sealed ring is housed; In like manner, screw the following slide plate of housing promotion and closely cooperate,, make the lower seal pipe can do radial displacement and guarantee end face seal again, play the effect of bidirectional modulation by the regulating action power of rubber cushion with the lower seal pipe that poly-polytetrafluoroethylsealed sealed ring is housed; Spring promotes upper/lower cone, thereby promote to place of the inner conical surface operation of the seal of upper and lower sealed tube inside along upper and lower sealed tube, along with the wearing and tearing of seal, spring promotes upper/lower cone and constantly compensates, thereby guarantees the sealing that this blowout hookup is permanently effective.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model.

1-pressure cap among the figure, the last apical ring of 2-, 3-upper conical-tube, 4-upper bracket, 5-upper roller, the 6-rubber cushion, the last slide plate of 7-, 8-joint ring, 9-top connection, the last sealed tube of 10-, the last seal of 11-, 12-upper cone, 13-bolt, 14-spring, 15-lower seal pipe, the 16-housing, 17-lower contact, apical ring under the 18-, 19-sealing ring, 20-slower conical tube, the 21-short circuit, 22-paraffin valve, 23-lower cone, 24-lower seal, slide plate under the 25-, 26-lower carriage, 27-bottom roller, 28-polished rod.

The specific embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing:

By shown in Figure 1, a kind of two two autocontrol wellhead blowout preventers of transferring of holding up, comprise pressure cap 1, lower contact 17, housing 16, polished rod 28, place spring 14 two ends of polished rod 28 outsides to be equipped with cone (12,23) successively, seal (11,24), seal (11,24) be cone-type spiral high elasticity abrasion-proof sealed packing, and seal (11,24) and sealed tube (10,15) inclined-plane matches, on the sealed tube (10,15), all be equipped with poly-polytetrafluoroethylsealed sealed ring 8 in the low groove, sealed tube (10,15) top (outside boss) is equipped with slide plate (7 respectively, 25), slide plate (7,25) top is equipped with upper conical-tube 3 respectively, housing 16, the two is (3 years old, 16) all be equipped with rubber cushion 6 in the bottom groove, lower seal pipe 15 bottoms are equipped with the lower contact 17 that connects housing 16 and short circuit 21, and short circuit 21 inside are connected with paraffin valve 22 by screw thread; Pressure cap 1 and lower contact 17 inside are equipped with apical ring (2,18), apical ring (2 respectively, 18) support (4,26) is arranged at the bottom, and support (4,26) external surface is identical with awl tube (3,20) inner surface tapering respectively, and leaves and compress into the space, support (4,26) inside is equipped with several rollers (5,27), roller (5,27) is respectively 3, radially is mutually 120 ° and evenly distributes, be fixed on the support (4,26), polished rod is played centralizing function; Housing 16 is connected by bolt 13 with top connection 9, is convenient to operating personnel and changes sealed packing.

This blowout hookup is when reality is used, and pressure cap 1 promotes to go up apical ring 2 and upper bracket 4 moves along upper conical-tube 3 inner conical surfaces by screwing, and makes equally distributed 3 upper rollers 5 be close to polished rod, and realization top forces to set upright; In like manner, promote down by screwing lower contact 17 that apical ring 18 and lower carriage 26 make equally distributed 3 bottom rollers 27 be close to polished rod along the operation of slower conical tube 20 inner conical surfaces, realize that the bottom forces to set upright.Screw when apical ring 2 moves downward on the pressure cap 1, promote upper conical-tube 3 and last slide plate 7 and closely cooperate,, make sealed tube 10 can do radial displacement and guarantee end face seal again by the regulating action power of seal gasket 6 with the last sealed tube 10 that poly-polytetrafluoroethylsealed sealed ring 8 is housed; In like manner, slide plate 25 closely cooperates with the lower seal pipe 15 that poly-polytetrafluoroethylsealed sealed ring 8 is housed under housing 16 promotions by screwing, and by the regulating action of seal gasket 6, makes lower seal pipe 15 can do radial displacement and guarantees end face seal again.Spring 14 promotes upper/lower cone (12,23), promote to be installed in the interior seal 11 of upper and lower sealed tube (10,15) along upper and lower sealed tube (10 by upper/lower cone (12,23), 15) inner conical surface operation, along with the wearing and tearing of upper and lower seal (11,24), spring 14 promotes upper/lower cone (12,23) constantly compensate, thereby guarantee the sealing that this wellhead blowout preventer is permanently effective.

This pair holds up two autocontrol wellhead blowout preventers of transferring to adopt modes such as two ends force to set upright, middle automatic deflection adjusting, bidirectional compensating sealing, on the basis of not damaging the polished rod mechanical performance, the skew of restriction polished rod, inclination, swing, prevent the sealed packing eccentric wear, prolong the application life of polished rod and packing, reduce maintenance cost and material consumption, avoided well head to leak and caused environment pollution.

Claims

1. hold up two autocontrol wellhead blowout preventers of transferring for one kind pair, comprise pressure cap (1), lower contact (17), housing (16), polished rod (28), it is characterized in that: place outside spring (14) two ends of polished rod (28) to be equipped with cone (12,23) successively, seal (11,24), and seal (11,24) match sealed tube (10 with sealed tube (10,15) inclined-plane, 15) on, all be equipped with joint ring (8) in the low groove, sealed tube (10,15) top is equipped with slide plate (7,25) respectively, slide plate (7,25) top is equipped with upper conical-tube (3) respectively, housing (16) all is equipped with rubber cushion (6) in the two (3,16) bottom groove, lower seal pipe (15) bottom is equipped with the lower contact (17) that connects housing (16) and short circuit (21), pressure cap (1) and lower contact (17) inside are equipped with apical ring (2,18) respectively, place apical ring (2,18) support (4 of bottom, 26) match support (4 with awl tube (3,20) inclined-plane respectively, 26) inside is equipped with several rollers (5,27).

2. two two autocontrol wellhead blowout preventers of transferring of holding up according to claim 1, it is characterized in that: roller (5,27) is respectively 3.