CN200963808Y

CN200963808Y - Valve converting tool

Info

Publication number: CN200963808Y
Application number: CN 200620046828
Authority: CN
Inventors: 孙国安
Original assignee: Shanghai SK Petroleum Chemical Equipment Corp Ltd
Current assignee: Shanghai SK Petroleum Chemical Equipment Corp Ltd
Priority date: 2006-10-16
Filing date: 2006-10-16
Publication date: 2007-10-24
Anticipated expiration: 2016-10-16

Abstract

The utility model relates to a valve exchange tool, which is characterized in that it comprises a valve lifter, an adaptation cover, a flange, a piston rod, three stop valves, a front part of the body, an oil cylinder, a flow direction pipe, a regulating nut, a back part of the body, a pressing cap and a protecting cap, the piston rod is provided in the oil cylinder, the front end of the piston rod is connected with the flange and the adaptation cover after passing through and being arranged at the two stop valves of the front part of the body by a seal ring, a gasket seal and a gland cover, the valve lifter is provided at the front end of the adaptation cover, the back end of the piston rod is connected with the pressing cap and the protecting cap after passing through and being arranged at the stop valve of the back part of the body by the seal ring, the flow direction pipe is provided at the upper end of the front part of the body and the back part of the body through the regulating nut. The utility model has the advantage of that it can change valves rapidly and effectively under the well pressure state.

Description

Valve converting tool

Technical field

The utility model relates to a kind of valve converting tool, can belong to technical field of tools under the state of not kill-job or do not close under the condition of storm valve and change bypath valve.

Background technology

In the oil recovery gas well in each oil field, the whole nation, quite a few well head is because corrosion, a variety of causes such as aging, valve and other wellhead component produce leakage in various degree, it is very unfavorable to the safety in production of oil gas well that head valve leaks, in case consequence out of control is quite serious, the way of solution is changed leakage valve exactly, common process, only way is exactly kill-job, but adopts the mode of kill-job to change head valve, can bring following many unfavorable factors to the ordinary production of oil gas well:

1, well killing fluid can cause certain injury to the payzone of oil gas well, particularly may the underproduction after the middle and later periods oil gas well kill-job of producing even can't resume production;

2, need expend a large amount of funds;

3, need a large amount of preparations and employ kill-job equipment;

4, the discharging of well killing fluid causes serious pollution.

Summary of the invention

The purpose of this utility model provides a kind of valve converting tool that can carry out changing fast and effectively valve under not kill-job state.

For realizing above purpose, the technical solution of the utility model provides a kind of valve converting tool, it is characterized in that, comprise valve lifter, adaptive cover, flange, piston rod, three stop valves, preceding support body, oil cylinder, flow to conduit, adjusting nut, back support body, pressure cap, helmet, piston rod is located in the oil cylinder, the piston rod front end passes through sealing ring, before passing and be located at, gasket seal and sealing shroud be connected with adaptive cover by flange behind two stop valves of support body, valve lifter is located at adaptive cover front end, the piston rod rear end is passed the stop valve of being located in the support body of back by sealing ring and is connected with helmet with pressure cap, is provided with by adjusting nut with support body upper end, back at preceding support body and flows to conduit.

The utility model is under the state of not kill-job or do not close under the condition of storm valve and change bypath valve, make piston rod movement and rotation that valve lifter (the VRP plug is stifled) is installed in four-way junction of casing or oil pipe four-way branch mouth screw thread place by hydraulic drive and wrench operated, and valve lifter (VRP plug stifled) taken out from four-way junction of casing or oil pipe four-way branch mouth screw thread, thereby reach the purpose of changing bypath valve.

The utility model has the advantages that and under not kill-job state, to carry out changing fast and effectively valve.

Description of drawings

Fig. 1 is the valve converting tool structural representation;

Fig. 2 is the valve lifter structural representation;

Fig. 3 is adaptive nested structure schematic diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

Embodiment

As shown in Figure 1, be the valve converting tool structural representation, described valve converting tool comprises valve lifter 1, adaptive cover 2, flange 3, piston rod 5, stop valve 7,8, preceding support body 10, oil cylinder 12, flow to conduit 13, adjusting nut 14, back support body 15, stop valve 16, pressure cap 17 and helmet 18, piston rod 5 is installed in the oil cylinder 12, piston rod 5 front ends are by

sealing ring

4,11, gasket seal 6 and sealing shroud 9 pass the stop valve 7 that is installed in 10 li of preceding support bodies, 8 backs are connected with adaptive cover 2 by flange 3, valve lifter 1 is installed in adaptive cover 2 front ends, piston rod 5 rear ends are passed the stop valve 19 that is installed in 15 li of back support bodies by sealing ring 16 and are connected with helmet 18 with pressure cap 17, flow to conduit 13 at preceding support body 10 and support body 15 upper ends, back by adjusting nut 14 installations.

As shown in Figure 2, be the valve lifter structural representation, described valve lifter 1 is made up of screw 20, blockage body 21, spool 22, spring 23 and nut 24, and spool 22 is installed in the blockage body 21, one end of spool 22 is connected with nut 24 by spring 23, and the other end is connected with screw 20.

When work, the spool 22 externally effect of power can separate with blockage body 21 bodies down, forms the inner chamber conducting state, removes the effect of external force, and spool 22 recovers original state by the effect of spring 23 power, forms the sealing of inner chamber conducting state, plays the one-way sealing effect.

As shown in Figure 3, be adaptive nested structure schematic diagram, described adaptive cover 2 by overlap 25 among the interior side, pin 26, soket head cap screw 27, interior hexagonal cover 28, steel ball 29, jump ring 30, nut 31 and body 32 form, overlap 25 in the side in being provided with in the body 32, body 32 outer at least one pin 26 and soket head cap screws 27 of being provided with, hexagonal cover 28 in one end of body 32 is provided with, interior hexagonal cover 28 outer steel ball 29 and the jump rings 30 of being provided with, fixing by nut 31.

The main effect of adaptive cover 2 is attaching parts, one end is connected with piston rod 5, locking be by adaptive cover 2 with pin 26 and soket head cap screw 27, during installation a soket head cap screw 27 on adaptive cover 2 cylindricals is unscrewed, extract pin 26 out, piston rod 5 is inserted in adaptive cover 2 end hole, insert pin, piece together tight soket head cap screw 27, the other end is connected with valve lifter 1, near on round in the end chucking steel ball 29 is arranged in adaptive cover 2 holes, so, as long as valve lifter 1 is firmly inserted in adaptive cover 2 holes just passable, chucking steel ball 29 can slip in the groove in the valve lifter 1 bar portion, guarantees that valve lifter 1 is reliable with being connected of adaptive cover 2.

Conduit 13 two ends passages are closed or opened to 2 stop valves 7,19 during work, the front end of conduit 13 passages is opened by stop valve 7 and pass and adpting flange 3 endoporus conducting and disconnections, open by stop valve 19 and pass and oil cylinder 12 rear end inner chamber conducting and disconnections the rear end of conduit 13 passages, open and close by stop valve 8, oil cylinder 12 front end inner chambers lead to the passage conducting and the disconnection of atmosphere, helmet 18 will be removed before work, and helmet 18 is not use under the user mode at valve converting tool.

At work, by controlling 3

stop valves

7,8,19, the forefront pressure that makes valve converting tool is by conduit 13 and oil cylinder 12 rear end conductings, the front end of piston rod 5 reaches balance with the back end pressure, under pressure balanced condition, valve lifter (the VRP plug is stifled) 1 is installed or removed to valve lifter (the VRP plug is stifled) 1 from four-way junction of casing or the other exit of oil pipe four-way by rotary-piston bar 5.

Claims

1. valve converting tool, it is characterized in that, comprise valve lifter (1), adaptive cover (2), flange (3), piston rod (5), stop valve (7,8), preceding support body (10), oil cylinder (12), flow to conduit (13), adjusting nut (14), back support body (15), stop valve (16), pressure cap (17), helmet (18), piston rod (5) is located in the oil cylinder (12), piston rod (5) front end is by sealing ring (4,11), gasket seal (6) and sealing shroud (9) pass the stop valve (7 of being located at preceding support body (10) lining, 8) back is connected with adaptive cover (2) by flange (3), valve lifter (1) is located at adaptive cover (2) front end, piston rod (5) rear end is passed the stop valve (19) of being located at support body (15) lining, back by sealing ring (16) and is connected with helmet (18) with pressure cap (17), is provided with by adjusting nut (14) on preceding support body (10) and back support body (15) and flows to conduit (13).

2. valve converting tool according to claim 1, it is characterized in that, described valve lifter (1) is made up of screw (20), blockage body (21), spool (22), spring (23) and nut (24), spool (22) is located in the blockage body (21), one end of spool (22) is connected with nut (24) by spring (23), and the other end is connected with screw (20).

3. valve converting tool according to claim 1, it is characterized in that, described adaptive cover (2) is made up of cover (25), pin (26), soket head cap screw (27), interior hexagonal cover (28), steel ball (29), jump ring (30), nut (31) and body (32) among the interior side, cover (25) in the side in being provided with in the body (32), outer at least one pin (26) and the soket head cap screw (27) of being provided with of body (32), one end of body (32) is provided with interior hexagonal cover (28), outer steel ball (29) and the jump ring (30) of being provided with of interior hexagonal cover (28), fixing by nut (31).