CN2614261Y

CN2614261Y - Valve replacing equipment for pressure pipe line

Info

Publication number: CN2614261Y
Application number: CN 03251401
Authority: CN
Inventors: 于忠德; 白海燕; 潭江川; 朱波; 王建伟; 施红伟
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Daqing Oilfield Co Ltd
Priority date: 2003-04-28
Filing date: 2003-04-28
Publication date: 2004-05-05
Anticipated expiration: 2013-04-28

Abstract

A valve replacing tool of pressure pipeline substantially solves the problems of not being able to replace valves under pressure when well head control valves of production wells are replaced, polluting environment and high maintenance cost. The utility model is characterized in that a pressure gage (2) is arranged on the outer wall of a collar clamp (1) which is provided with a tapping hole (3) and can be blocked on valves, an annular tube (6) and a supporting rack (7) are arranged in turn between the collar clamp (1) and a thimble (4), wherein a movable head (8) is connected with one end of the supporting rack (7) with a boss, a junk ring (11) and a packer rubber (10) are arranged in turn between the annular tube (6) and the boss of the supporting rack (7), the radial slot of the movable head (8) is internally provided with a plurality of a retaining fixture block (9) which can slide radially and are internally provided with ring-shaped springs (15), the collar clamp (1), the annular tube (6), the supporting rack (7) and the thimble (4) are sealed among each other. The utility model has the advantages of being able to replace the well head control valves of production wells under pressure, non-polluting environment and low maintenance cost.

Description

Band pressure pipeline valve changer

Technical field:

The utility model relates to cellar control gate used in the oil recovery field, oil field and changes instrument, especially is with pressure pipeline valve changer.

Background technology:

In oil recovery field, oil field, the frequent switch of cellar control gate, seal wear out, and valve often occurs and damage or leak, and must change valve; Can not replace with pressure when changing valve, must stop oil pumper and carry out kill job, give off the crude oil or the natural gas that retain in the well, the valve that damages is disassembled change new valve then; Substantial oil that retains in the pipeline or natural gas drain and cause energy waste, and crude oil that these are discharged from or natural gas can pollute environment; Kill job need be equipped with great amount of manpower and material resources, makes the maintenance cost height.

The utility model content:

Can not the replace with pressure valve when changing in order to overcome the producing well cellar control gate, contaminated environment and the high deficiency of maintenance cost, the utility model provides a kind of band pressure pipeline valve changer, and this band pressure pipeline valve changer can replace with pressure producing well cellar control gate, free from environmental pollution and characteristics that maintenance cost is low.

The technical solution of the utility model is: this band pressure pipeline valve changer comprises pressure meter and thimble, one end of thimble is conical, pressure meter places and has plug hole and can be stuck in clip outer wall on the valve, between clip and thimble, be equipped with the bracing frame that a sleeve pipe and an end are connected with movable head and are with boss successively, be equipped with pressure ring and packing element between the boss of sleeve pipe and bracing frame successively, the radial slot of movable head is built-in with the block card piece that can radially slide some built-in ring springs, sealing mutually between clip, sleeve pipe, bracing frame and the thimble.

Above-mentioned clip inwall is that stage shape and inwall two ends are threaded; The sleeve pipe at clip inwall stage place is equipped with packing, pressure ring and gland outward successively; Movable head blocks mutually with bracing frame and can rotate; The block card piece is 2; The block card piece is glanded cover mutually; All be equipped with sealing ring between bracing frame and sleeve pipe and the thimble.

The utlity model has following beneficial effect: owing to take such scheme, when changing the producing well cellar control gate, pass and changed valve and enter packing element on the pipeline inner support frame and can seal up pressure crude oil or natural gas in the oil well, make and damage valve and can when the oil well band is pressed, change; Because crude oil or natural gas in the oil well can not leak out, thereby do not pollute the environment; Utilize this device to change the human and material resources that producing well cellar control gate need only be seldom, maintenance cost is low.

Description of drawings:

Accompanying drawing 1 is a structure sectional view of the present utility model;

Accompanying drawing 2 is A-A structure sectional views of the present utility model;

Accompanying drawing 3 is B-B structure sectional views of the present utility model.

1-clip among the figure, 2-pressure meter, 3-plug hole, 4-thimble, 5-gland, 6-sleeve pipe, 7-bracing frame, 8-movable head, 9-block card piece, 10-packing element, 11-pressure ring, 12-packing, 13-pressure ring, 14-gland, 15-ring spring, 16-sealing ring.

The specific embodiment:

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

As shown in FIG., this band pressure pipeline valve changer comprises pressure meter 2 and thimble 4, pressure meter 2 places clip 1 outer wall, clip 1 inwall is that stage shape and inwall two ends are threaded, the central duct of pressure meter 2 communicates with clip 1 inner chamber, the central duct sidewall has plug hole 3, and an end face of clip 1 can be stuck on the valve; At clip 1 inwall two ends by sleeve pipe 6 and the gland 5 of being threaded, be equipped with packing 12 and pressure ring 13 on the clip 1 intermediate light face stage and be glanded 5 and compress, sleeve pipe 6 is enclosed within bracing frame 7 outer walls and connects with it by screw thread, one end of bracing frame 7 band boss blocks mutually the movable head 8 that can rotate around it, and is passed by thimble 4 by screw thread in the middle of the bracing frame 7; Be equipped with pressure ring 11 and packing element 10 between the boss of sleeve pipe 6 and bracing frame 7 successively, sleeve pipe 6 contacts with pressure ring 11, and revoling tube 6 can push packing element 10 by pressure ring 11 and make it distortion, and then makes between the inwall of bracing frame 7 and pipeline and seal; Movable head 8 has radial slot and its radial slot is built-in with 2 block card pieces 9 that can radially slide, two block card piece 9 opposite faces are arc surface, the conical end of corresponding back center 4 can be inserted, block card piece 9 inboards along the circumferential direction have spring eye, spring eye is built-in with ring spring 15, thimble 4 withdraws from backstop fixture block 9 and can reset, and block card piece 9 is glanded 14 and covers mutually, and gland 14 is fixed on the movable head 8; All be equipped with sealing ring 16 between bracing frame 7 and sleeve pipe 6 and the thimble 4, avoid from the screw thread space between them, leaking with pressure fluid in the pressure pipeline or gas.

During actual the use, close earlier and changed valve, add the asbestos paper washer, clip 1 is stuck in is changed on the valve, close the switch outside the plug hole 3 at the contact surface that is changed valve and clip 1; Open fully and changed valve, pressure meter 2 shows force value, and rotating casing 6, bracing frame 7 and thimble 4 together enter the termination of this changer and changed in the band pressure pipeline that valve links; Fixing support rack 7 rotates thimble 4 separately the conical end of thimble 4 is entered in the relative space of two block card pieces 9, till continuing rotation thimble 4 and tightening to 9 expansions of block card piece and pipeline inwall; Fixing support rack 7, revoling tube 6 makes it promote pressure ring 11 extruding packing elements 10 separately, does not produce till the leakage until packing element 10 tightly seals with the pipeline inwall; So far this changer installs.Open the outer switches of plug hole 3 and make and changed the liquid or the gas that retain between valve and the sleeve pipe 6 and discharge, pull down clip 1 successively and changed valve, install new valve then, pull down this changer according to the opposite order of this changer installation.

Claims

1, a kind of band pressure pipeline valve changer, comprise pressure meter (2) and thimble (4), one end of thimble (4) is conical, it is characterized in that: pressure meter (2) places and has plug hole (3) and can be stuck in clip (1) outer wall on the valve, between clip (1) and thimble (4), be equipped with the bracing frame (7) that a sleeve pipe (6) and an end are connected with movable head (8) and are with boss successively, be equipped with pressure ring (11) and packing element (10) between the boss of sleeve pipe (6) and bracing frame (7) successively, the radial slot of movable head (8) is built-in with the block card piece (9) that can radially slide some built-in ring springs (15), clip (1), sleeve pipe (6), sealing mutually between bracing frame (7) and the thimble (4).

2, band pressure pipeline valve changer according to claim 1 is characterized in that: clip (1) inwall is that stage shape and inwall two ends are threaded.

3, according to claim 1,2 described band pressure pipeline valve changers, it is characterized in that: outer packing (12), pressure ring (13) and the gland (5) of being equipped with successively of the sleeve pipe (6) at clip (1) inwall stage place.

4, band pressure pipeline valve changer according to claim 1, it is characterized in that: movable head (8) blocks mutually with bracing frame (7) and can rotate.

5, band pressure pipeline valve changer according to claim 1, it is characterized in that: block card piece (9) is 2.

6, according to claim 1,5 described band pressure pipeline valve changers, it is characterized in that: block card piece (9) is glanded (14) and covers mutually.

7, band pressure pipeline valve changer according to claim 1 is characterized in that: all be equipped with sealing ring (16) between bracing frame (7) and sleeve pipe (6) and the thimble (4).