CN201507272U

CN201507272U - Mounting clamping board and positioning bolt used for pressurized valve replacement and

Info

Publication number: CN201507272U
Application number: CN2009202192674U
Authority: CN
Inventors: 梅宗斌; 刘彬; 彭栋才
Original assignee: LUZHOU CHUANYOU DRILING EQUIPMENT CO Ltd
Current assignee: SICHUAN HWAYOO PETROLEUM DRILLING & PRODUCTION CO., LTD.
Priority date: 2008-12-31
Filing date: 2009-09-27
Publication date: 2010-06-16
Anticipated expiration: 2019-09-27

Abstract

The utility model discloses a mounting clamping board for pressurized valve replacement, which is characterized in that an internal thread through hole is formed at the center of the clamping board; a bayonet for communicating the internal thread through hole and the outer edge of the clamping board is formed on the clamping board; and through holes are formed on the clamping board around the internal thread through hole. The mounting clamping board for pressurized valve replacement can be used for fixing a blanking plug in pressurized circumstances, and can be conveniently installed between a valve to be replaced and a sleeve by being connected with a hydraulic rod of the blanking plug under a constant pressure, so that a main control valve of a wellhead production tree can be replaced safely, conveniently and rapidly in a pressurized manner.

Description

Band is pressed and is changed valve with clamp and positioning bolt are installed

Technical field

The utility model relates to the more changing device of the main control valve of well head production tree, and particularly a kind of band is pressed and changed the valve erecting device.

Background technology

The well head production tree at petroleum works scene, the method that adopts usually when changing well-head valve is: after blanking plug is put into the precalculated position, all devices that blanking plug is later are removed, changed the valve operation then.This mode exists major safety risks, and promptly blanking plug only depends on the shutoff mode of self to be not enough to tackle down-hole and aboveground situation complicated and changeable: 1. when down-hole pressure was excessive, blanking plug can not bear powerful down-hole pressure, and the seat envelope lost efficacy, and leaked; 2. when changing valve,, leak because external force effect collision blanking plug afterbody causes blanking plug seat envelope not tight; 3. leaked when the blanking plug deck loses efficacy.

Summary of the invention

The purpose of this utility model is: in order to solve the problem that well head production tree replace with pressure main control valve exists, provide a kind of safe and reliable, succinctly band is pressed and is changed the valve erecting device easily.

The technical solution of the utility model is:

A kind of band is pressed and is changed valve with clamp is installed, and it is characterized in that: there is an internal thread through hole at the clamp center, and a bayonet socket that is communicated with internal thread hole and clamp outer rim is arranged on clamp, is distributed with through hole on the clamp around the internal thread through hole.

Supplementary technology scheme of the present utility model is as follows:

Preferably, the opening of described bayonet socket is less than the aperture of internal thread through hole.

The beneficial effects of the utility model are: can be used under band pressure situation fixedly blanking plug, be installed between valve to be changed and the sleeve pipe by the liquid bar that connects blanking plug easily under the situation about keep-uping pressure, can be safe, convenient, fast, the work of finishing well head production tree replace with pressure main control valve, and simple in structure, the production maintenance cost is lower.

Description of drawings

Fig. 1 is that the utility model band pressure is changed the schematic diagram of valve with erecting device before changing valve.

Fig. 2 is the schematic diagram that valve to be changed and casing head are in released state.

Fig. 3 installs the utility model band pressure to change the schematic diagram of valve with clamp in the erecting device.

Fig. 4 installs the utility model band pressure to change the schematic diagram of valve with positioning bolt in the erecting device.

Fig. 5 is for removing the schematic diagram of valve to be changed.

Fig. 6 is the schematic diagram that new valve is installed.

Fig. 7 has fixed the schematic diagram of removing clamp and positioning bolt behind the new valve.

Fig. 8 installs the schematic diagram that new valve is finished

Fig. 9 is the schematic diagram that withdraws from blanking plug.

Figure 10 is the clamp elevation.

Figure 11 is the clamp lateral view.

Figure 12 is the positioning bolt elevation

Figure 13 is the positioning bolt lateral view

Figure 14 is the schematic diagram of clamp and positioning bolt assembling.

Wherein, Reference numeral: 1 is junction plate, and 2 is blanking plug liquid bar, and 3 is the liquid bar, and 4 are the blowout prevention box, and 5 is fluid cylinder, and 6 is blanking plug, and 7 is valve to be changed, and 8 is nut, and 9 is the valve bolt, and 11 is clamp, and 12 is positioning bolt, and 13 is new valve, and 14 is valve plate.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Specific embodiment of the utility model, a kind of band is pressed and is changed valve with clamp is installed, and shown in Figure 10,11, there is an internal thread through hole at clamp 11 centers, a bayonet socket that is communicated with internal thread hole and clamp 11 outer rims is arranged on clamp 11, on the clamp 11 around the internal thread through hole, be distributed with through hole.Preferably, the opening of described bayonet socket is less than the aperture of internal thread through hole.

Its matching used positioning bolt is shown in Figure 12,13, and positioning bolt 12 outer is with one section and has the external screw thread that cooperates with internal thread through hole, and there is a central through hole at positioning bolt 12 centers, and an opening is arranged on the sidewall of positioning bolt 12.As shown in figure 14, bayonet socket on it and opening are used for by blanking plug liquid bar 2 after positioning bolt 12 and clamp 11 assemblings.

This clamp is to be used for band to press and to change the valve erecting device, and it is that described device comprises motor, oil pump, installation frame, clamp 11 and positioning bolt 12 with an object lesson of erecting device that such band pressure is changed valve; Frame wherein is installed comprises fluid cylinder 5, on the liquid bar 3 of fluid cylinder 5 junction plate 1 is installed, blanking plug liquid bar 2 is installed on the junction plate 1, the dismountable blanking plug 6 that is equipped with in blanking plug liquid bar 2 bottoms, outside blanking plug liquid bar 2, be with blowout prevention box 4,, fluid cylinder 5 can be made as 2 in order to optimize structure and stressed design, 2 fluid cylinders 5 are about blanking plug liquid bar 2 symmetric arrangement, and junction plate 1 is connected between the piston rod of 2 fluid cylinders 5; The fluid cylinder of installing in the frame 5 is driven by motor and oil pump.

Change the concrete working method of valve below in conjunction with the utility model band pressure, further specify the utility model band pressure and change structure and the operating principle of valve with erecting device with erecting device:

When well head production tree replace with pressure main control valve, the utility model solves the technical scheme that its technical problem adopts and is: at first with bolt fixing on casing head with a pair of fluid cylinder 5 symmetries of mounting bracket, mounting bracket and sleeve pipe are fused.Blanking plug 6 is connected with blanking plug liquid bar 2 and is installed on the junction plate 1, as shown in Figure 1.Make liquid bar 3 to the motion of sleeve pipe direction by motor and oil pump driving, by junction plate 1 and blanking plug liquid bar 2 blanking plug 6 is sent to cause precalculated position seat envelope.Remove valve bolt 9, valve 7 to be changed is taken out to junction plate 1, valve 7 to be changed is separated, as shown in Figure 2 with sleeve pipe.Clamp 11 is inserted between valve 7 to be changed and the casing head and is fixed on the casing head with valve bolt 9, then positioning bolt 12 is installed in the internal thread hole in the clamp 11, revolve and cause the appropriate location, positioning bolt 12 and blanking plug 6 afterbodys are close together, as shown in Figure 4.Remove parts such as junction plate 1, blanking plug liquid bar 2, valve to be changed 7, as shown in Figure 5.Change new valve 13, blanking plug liquid bar 2 and junction plate 1 are installed, blanking plug liquid bar 2 reliably is connected, as shown in Figure 6 with blanking plug 6.Remove clamp 11 and positioning bolt 12, as shown in Figure 7.Again new valve 13 is installed on the casing head, is fixed with valve bolt 9, nut 8, as shown in Figure 8.Release blanking plug 6 starts oil pump, makes blanking plug liquid bar 2 drive blanking plug 6 to the motion of junction plate 1 direction, until the valve plate 14 that moved back new valve 13, and valve-off, as shown in Figure 9.Remove erecting device, finish and change valve.Recover well head, can resume production.

Claims

1. a band is pressed and is changed valve with clamp is installed, and it is characterized in that: there is an internal thread through hole at the clamp center, and a bayonet socket that is communicated with internal thread hole and clamp outer rim is arranged on clamp, is distributed with through hole on the clamp around the internal thread through hole.

2. band according to claim 1 is pressed and is changed valve with clamp is installed, and it is characterized in that the opening of described bayonet socket is less than the aperture of internal thread through hole.

3. press with the described band of claim 1 and to change valve for one kind with the matching used positioning bolt of clamp is installed, it is characterized in that: positioning bolt outer is with one section and has the external screw thread that cooperates with the clamp internal thread through hole, there is a central through hole at the positioning bolt center, and an opening is arranged on the sidewall of positioning bolt.