CN2416229Y

CN2416229Y - Multifunction blow-out preventer

Info

Publication number: CN2416229Y
Application number: CN 99254343
Authority: CN
Inventors: 李静深; 张子芳
Original assignee: Cui Jingsheng; Kang Fuyuan
Current assignee: Cui Jingsheng; Kang Fuyuan
Priority date: 1999-11-19
Filing date: 1999-11-19
Publication date: 2001-01-24
Anticipated expiration: 2009-11-19

Abstract

The utility model relates to a novel blow-out preventer used in mechanical oil production. A bias-adjusting shorting of a bias-adjusting clamp head can arbitrarily rotate until quite right according to the offset direction of an oil controlling rod. The utility model adopts two-stage sealing, when an oil well normally produce, first stage sealing works, and second stage sealing normally opens. When needing to change a first stage packing, a piston sleeve is rotated at a clockwise direction, the work of the second stage sealing plays a rule of a rubber gate, therefore, the first stage packing is altered. A vacuum self-locking anti-percolator is installed on a blow-out box, which effectively solves the leakage problem of the blow-out box. Each component of the utility model and the connection all adopt high voltage elements. The utility model has the advantages of high safety, compact structure and convenient installation. The utility model can effectively improve the work efficiency of a rod-pumped well and prevent a contaminating accident.

Description

Multi-functional blowout hookup

The utility model is the novel blowout hookup in a kind of mechanical oil recovery.

In oil field development, pumping production is a pith in the oil field development.Existing oil pumper blowout hookup mainly is made up of rubber gate and blowout prevention box, because of the rubber gate can not bear high pressure, when oil-field flooding takes effect, when pressure raises suddenly, often damage polluting and security incident; Blowout prevention box tuningout adopts horizontal sliding or ball-type device, is subjected to the restriction of its sealing means can not bear high pressure; Though solved common blowout prevention box and can not compress problem automatically from compressing the blowout prevention box, had oil pumper down stroke oil impregnate problem.

The purpose of this utility model is to overcome the weak point of above various blowout hookups, and a kind of negative pressure self-locking antiseepage, the comprehensive tuningout of two-stage high pressure, the anti-pollution safe and reliable multi-functional blowout hookup of two-stage high pressure sealing are provided.

The purpose of this utility model realizes by following measure: the utility model is made up of tuningout clip head, locking nut, tuningout joint, locating ring, piston bush, secondary packing, second piston, first stage piston, interior jump ring, packing chamber, one-level packing, packing gland, packing pressure cap and negative pressure self-locking percolator.Tuningout clip head, locking nut, tuningout joint, locating ring have constituted the comprehensive tuningout combination of two-stage high pressure, and piston bush, secondary packing, second piston, first stage piston, interior jump ring have constituted two-stage high pressure sealing combination.

Two-stage tuningout combination of the present utility model and two-stage high pressure sealing combination make it realize comprehensive tuningout, bear the high pressure ability and strengthen greatly, and the withstand voltage 15MPa that reaches when using joint ring, good sealing effect has reduced pollution and security incident.

Concrete structure of the present utility model is further described by following examples and accompanying drawing:

Fig. 1 is a sectional drawing of the present utility model;

Fig. 2 is an installation site of the present utility model schematic diagram.

Describe the details and the working condition thereof of the device that the utility model proposes in detail below in conjunction with accompanying drawing.

Find out that by Fig. 1 this blowout hookup is made up of tuningout clip head 1, locking nut 2, tuningout joint 4, locating ring 3, piston bush 5, secondary packing 15, second piston 7, first stage piston 8, interior jump ring 6, packing chamber 9, one-level packing 10, packing gland 11, packing pressure cap 12 and negative pressure self-locking percolator 13.Tuningout joint 4 lower ends that can comprehensive tuningout are plugged in the tuningout clip head 1, and by locking nut 2 with the two connection, embed secondary packing 15 and second piston 7 in tuningout joint 4 upper ends, outside in tuningout joint 4 upper ends is provided with screw thread, assemble mutually with the internal thread of piston bush 5 lower ends, simultaneously be equiped with locating ring 3 at tuningout joint 4 and 5 of piston bushs, control the degree of tightness of secondary packing 15,7 of piston bush 5 and second pistons are provided with interior jump ring 6, fix second piston 7, and at piston bush 5 upper ends embedding first stage piston 8, piston bush 5 upper ends are provided with internal thread, assemble mutually with the external screw thread of 9 lower ends, packing chamber, the upper end of first stage piston 8 embeds packing chamber 9, and one-level packing 10 is withstood in the upper end of first stage piston 8 simultaneously, and packing gland 11 is withstood in the upper end of one-level packing 10, above the packing gland 11 packing pressure cap 12, at first stage piston 8, be equipped with the joint ring 14 of sealing usefulness on second piston 7 and the tuningout joint 4.

During concrete enforcement, should penetrate oil-extractor polish-rod by multi-functional blowout hookup, and multi-functional blowout hookup is located on the well head, referring to Fig. 2, fitting operation: unclamp locking nut 2, rotate tuningout clip head 1 according to the oil-extractor polish-rod eccentric position, make oil-extractor polish-rod and tuningout clip head 1 endoporus centering as far as possible, tight good tuningout clip head 1, rotation tuningout joint 4, entirely on the center up to oil-extractor polish-rod and multi-functional blowout prevention box, locking locking nut 2 is loaded onto one-level packing 10, build packing gland 11, the tight packing pressure cap 12 of going up compresses one-level packing 10, starts oil pumper.The replacing of multi-functional blowout hookup one-level packing 10: stop oil pumper work, take off locating ring 3, clockwise rotary-piston cover 5 compresses secondary packing 15 up to second piston 7, open negative pressure self-locking percolator 13, take out packing gland 11 and one-level packing 10, first stage piston 8 is pushed into the bottom, add one-level packing 10, build packing gland 11 tight good packing pressure caps 12, install negative pressure self-locking device 13, be rotated counterclockwise piston bush 5, unclamp secondary packing 15, load onto locating ring 3, start oil pumper.

Claims

1, a kind of multi-functional blowout hookup is characterized in that this device is made up of tuningout clip head (1), locking nut (2), tuningout joint (4), locating ring (3), piston bush (5), secondary packing (15), second piston (7), first stage piston (8), interior jump ring (6), packing chamber (9), one-level packing (10), packing gland (11), packing pressure cap (12) and negative pressure self-locking percolator (13); Tuningout joint (4) lower end that can comprehensive tuningout is plugged in the tuningout clip head (1), and by locking nut (2) with the two connection, embed secondary packing (15) and second piston (7) in tuningout joint (4) upper end, outside in tuningout joint (4) upper end is provided with screw thread, assemble mutually with the internal thread of piston bush (5) lower end, simultaneously between tuningout joint (4) and piston bush (5), be equiped with locating ring (3), control the degree of tightness of secondary packing (15), be provided with interior jump ring (6) between piston bush (5) and second piston (7), fix second piston (7), and at piston bush (5) upper end embedding first stage piston (8), piston bush (5) upper end is provided with internal thread, assemble mutually with the external screw thread of lower end, packing chamber (9), the upper end of first stage piston (8) embeds packing chamber (9), one-level packing (10) is withstood in the upper end of first stage piston (8) simultaneously, packing gland (11) is withstood in the upper end of one-level packing (10), above the packing gland (11) packing pressure cap (12), in first stage piston (8), be equipped with the joint ring (14) of sealing usefulness on second piston (7) and the tuningout joint (4).