CN205936513U - Natural gas diverter valve - Google Patents

Abstract

The utility model discloses a natural gas diverter valve, which comprises a body, a supporting plate, spheroid and last ball seat, there is the feed liquor hole inside the opening of body, the lower part in the feed liquor hole is fixed to the backup pad, it fixes at feed liquor hole upper portion and its inside and feed liquor hole intercommunication to go up the ball seat, be provided with the back shaft in the middle part of the backup pad, the spring housing is established on the back shaft, it has a plurality of apertures to open in the backup pad, the top of spring is provided with the limiting plate, the clearance is left with the back shaft top in the limiting plate bottom, the ball seat is fixed on the limiting plate down, the through -hole that have with feed liquor hole intercommunication is opened at spheroid middle part, the connecting axle rotate to set up in the sleeve, and the tip of connecting axle is connected with spheroid upper portion. Through the intercommunication cross -section big or small regulation of adjustment mechanism to the feed liquor hole for on the oil gas of scurrying blockked, prevent that oil gas from flowing to scurry magnifying of the well head overflow that arouses or well kick accident, avoided the offset -tune emergence of well control.

Description

Natural gas diaphragm valve

Technical field

The utility model is related to natural gas extraction field and in particular to natural gas diaphragm valve.

Background technology

In the drilling construction operation of natural gas well exploitation, formation fluid（Oil gas and water）Inevitably enter pit shaft, Generally, enter the formation fluid in pit shaft to pass through to be pressed in well weighted mud by kill manifold.When drilling is met extremely During high-pressure oil gas stratum, the gas stream on high-pressure oil gas stratum is altered under pressure and drives mud to converge together to well head, oil Alter on air-flow and cause Drilling Troubles, the lighter leads to well head overflow or well kick, severe one well control can be caused out of control it is generally the case that Easily cause gas blowout accident, and the kill-job operation of high-pressure oil-gas layer is difficult to carry out, upset being normally carried out of drilling well production operation.

Utility model content

The utility model purpose is to provide natural gas diaphragm valve, solves boring with meeting abnormal pressure oil gas in prior art The problem easily causing blowout and being difficult to carry out the kill-job operation of high-pressure oil-gas layer existing during layer.

The utility model is achieved through the following technical solutions：

Natural gas diaphragm valve, including body, gripper shoe, spheroid and upper ball base, has inlet opening in described body interior, Described gripper shoe is fixed on the bottom of inlet opening, and upper ball base is fixed on inlet opening top and its inside and is connected with inlet opening, is propping up It is provided with support shaft in the middle part of fagging, spring is set in support shaft, have multiple apertures, the top setting of spring on the supporting plate Limited location plate, and gap is left on limiting plate bottom and support shaft top, lower ball base is fixed on limiting plate, described upper ball base with Form a spherical blowout prevention cavity, spheroid is rotatably arranged in described blowout prevention cavity between ball seat, and in the middle part of described spheroid Have the through hole connecting with inlet opening；Also include governor motion, described governor motion includes sleeve and the company running through this body sidewall Spindle, described connecting shaft is rotatably arranged in sleeve, and described connecting shaft one end is connected with spheroid top, and the connecting shaft other end is along this Body extends radially outwardly, and is provided with the pod apertures of axis and connecting shaft diameter parallel on sleeve, and the two ends of pod apertures are respectively at entering Fluid apertures and extraneous connection, are provided with cannelure on this body sidewall, and sleeve are divided into two parts by described cannelure, are connecting On axle, block is installed, described block is slidably arranged in cannelure, under initial operating mode, described block by the middle part of pod apertures with Its two ends completely cut off, described inlet opening madial wall is provided with pressure sensor, pressure sensor pass through controller with for driving The driving equipment of axle of being dynamically connected connects, and is provided with corrosion protection axle sleeve on connecting shaft outer wall, corrosion protection axle sleeve one end is with ball body sidewall even Connect, sleeve inner side end has the buckling groove of annular, the corrosion protection axle sleeve other end is rotatably arranged in buckling groove.

For in prior art, when drilling meets abnormal pressure hydrocarbon formations, the gas stream on high-pressure oil gas stratum is in pressure Alter on effect is lower and drive mud to converge together to well head, gas stream is altered and causes Drilling Troubles, the lighter lead to well head overflow or Well kick, severe one can cause well control out of control it is generally the case that easily causing gas blowout accident, and inventor passes through to arrange blowout prevention in well head Device, by governor motion to the connection cross-sectional sizes of inlet opening adjust so that on the oil gas altered be blocked, that is, hinder oil gas Stream is altered on continuing, and prevents from altering the extension of the well head overflow causing or well kick accident in gas stream, it is to avoid well control imbalance Occur, reduce the probability of happening of blowout, to reduce the impact to drilling progress for the drilling process mesohigh oil gas.

Concrete operations are as follows, when running into abnormal pressure hydrocarbon formations, by rotating the extension in body exterior for the connecting shaft Part is so that there is the rotation of certain angle in spheroid, and now the through hole in the middle part of spheroid is mutually completely cut off with inlet opening, i.e. upper ball base And spheroid between, the circulation road of body interior is blocked, the gas stream above altered is blocked in below spheroid, now on inlet opening End injection drilling fluid, after spheroid top is subject to the impact of drilling fluid, starts to move down, gap occurs between spheroid and upper ball base, Drilling fluid is then flowed into the hypomere of inlet opening by this gap location, enters in well finally by the multiple apertures in gripper shoe to carry out Circulation kill-job operation, and then ensure being normally carried out of drilling well production operation.When running into the hydrocarbon formations of abnormal pressure, spheroid with And upper ball base the dynamics that is hit excessive it is easy to cause damage, therefore on the side wall of body, offer pod apertures, with timely Down-hole is depressured, and under initial operating mode, this pod apertures is blocked by block all the time, that is, inlet opening cannot pass through pod apertures It is connected with the external world, and when down-hole pressure reaches a critical value, needs spheroid that the carrying out of inlet opening is insulated, now the company of rotation Spindle so that while spheroid rotates, drives block to rotate in cannelure, until pod apertures are no longer influenced by restriction and straight Connect and be in communication with the outside, and this kind of mode of communicating is not to drain in the air by directly outer for oil gas, but by special container to this Oil gas is collected；By the packing to inlet opening upper end for the spheroid, pass through simultaneously pod apertures to the pressure release of inlet opening side wall so that It is ensured that each part of body interior is injury-free in the case that abnormal pressure in down-hole.Further, due to the exception of down-hole The appearance of high pressure is irregular so that artificial cannot accomplish timely and effective during adjusting inlet opening opening and closing, and then leads to blowout Accident becomes high-probability event；Pressure sensor is set in the middle part of inlet opening inwall, reality can be carried out to the high-pressure oil gas stream of down-hole When monitoring, after down-hole pressure exceeds standard value, then by data signal transmission to controller, controller controls pressure sensor Driving equipment starts to rotate connecting shaft, pass through in time spheroid and block the middle part of inlet opening, it is to avoid artificial when adjusting not Lead to well kick phenomenon in time.Wherein, the core component that connecting shaft rotates as spheroid, it is locally chronically exposed to high-pressure oil gas Under the continuous souring of stream and drilling fluid, and on this connection shaft portion sheathed corrosion protection axle sleeve, the anti-of connecting shaft can be increased Rotten corrosion protection intensity, it is to avoid serious corrosion is occurred on connecting shaft and leads to the rotation of spheroid to be lost efficacy.

Also include baffle ring and the limited block that cyclization is constituted is closed by left ring body, right ring body, baffle ring is connected to limited block Middle part, described upper ball base upper surface is provided with stair-stepping contact surface, and described limited block lower surface and baffle ring lower surface are respectively It is connected with described contact surface.On the oil gas altered be applied directly on spheroid outer wall so that spheroid is subject to making vertically upward With stress, same spheroid can form certain impact to upper ball base, once and spheroid generation is along the jump on body axis direction Dynamic, the connecting shaft being connected with spheroid can distort and occur stress impaired, therefore arrange limited block and baffle ring on inlet opening top, Upper ball base can be carried out with two grades of reinforcings, it is to avoid upper ball base loosens in this internal appearance and extends the position that spheroid moves upwards and produces Move it is ensured that spheroid keeps stable working condition in the Oil/gas Well of abnormal pressure.

The supporting positive cover being connected with inlet opening inwall is provided with described gripper shoe, described righting set upper side end is prolonged upwards Extend the middle part of spheroid.In the rotation that spheroid is carried out by the continuous impact of gas stream, using supporting positive cover to spheroid outer wall Restriction, to maintain the tie point around it with connecting shaft for the spheroid to do the circular motion of rule, prevent spheroid from circular runout occurring, protect Card spheroid and the stability of upper ball base.

Described sleeve lining is additionally provided with O-ring seal.Preferably, one end of connecting shaft is connected with spheroid, its The other end stretches out after running through sleeve, and the O-ring seal increasing on sleeve lining can improve the air-tightness of body itself, Improve the isolation effect of the gas stream that spheroid is altered on to down-hole.

The utility model compared with prior art, has such advantages as and beneficial effect：

1st, the utility model pass through governor motion to the regulation of the connection cross-sectional sizes of inlet opening so that on the oil gas quilt altered Stop, that is, hinder and alter in gas stream continuation, prevent the extension of the well head overflow causing or well kick accident is altered on gas stream, keep away Exempt from the generation of well control imbalance, reduced the probability of happening of blowout, to reduce the shadow to drilling progress for the drilling process mesohigh oil gas Ring；

2nd, the utility model arranges limited block and baffle ring on inlet opening top, upper ball base can be carried out with two grades of reinforcings, keep away Exempt from upper ball base this internal occur loosening and extend the displacement that spheroid moves upwards and produce it is ensured that spheroid abnormal pressure oil Stable working condition is kept in gas well.

Brief description

Accompanying drawing described herein is used for providing the utility model embodiment is further understood, and constitutes the one of the application Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the structural representation of governor motion；

Mark and corresponding parts title in accompanying drawing：

The left ring body of 1- body, 2-, 3- inlet opening, 4- through hole, 5- spheroid, 6- lower ball base, 7- spring, 8- support shaft, 9- prop up Fagging, 10- aperture, 11- baffle ring, the right ring body of 12-, 13- upper ball base, 14- governor motion, 141- sleeve, 142- connecting shaft, 143- Pod apertures, 144- block, 145- cannelure, 146- pressure sensor, 147- corrosion protection axle sleeve, 15- supporting positive cover.

Specific embodiment

For making the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this Utility model, is not intended as to restriction of the present utility model.

Embodiment 1

As shown in Figure 1 and 2, the present embodiment includes body 1, gripper shoe 9, spheroid 5 and upper ball base 13, in described body 1 Portion has inlet opening 3, and described gripper shoe 9 is fixed on the bottom of inlet opening 3, upper ball base 13 be fixed on inlet opening 3 top and its in Portion is connected with inlet opening 3, is provided with support shaft 8 in the middle part of gripper shoe 9, and spring 7 is set in support shaft 8, opens in gripper shoe 9 There are multiple apertures 10, the top of spring 7 is provided with limiting plate 16, and gap is left with support shaft 8 top in limiting plate 16 bottom, under Ball seat 6 is fixed on limiting plate 16, forms a spherical blowout prevention cavity, 5 turns of spheroid between described upper ball base 13 and lower ball base 6 Move and be arranged in described blowout prevention cavity, and have the through hole 4 connecting with inlet opening 3 in the middle part of described spheroid 5；Also include regulation machine Structure 14, described governor motion 14 includes sleeve 141 and the connecting shaft 142 running through body 1 side wall, and described connecting shaft 142 rotates and sets Put in sleeve 141, described connecting shaft 142 one end is connected with spheroid 5 top, and connecting shaft 142 other end is along body 1 radially outward Extend, the pod apertures 143 of axis and connecting shaft 142 diameter parallel be provided with sleeve 141, the two ends of pod apertures 143 respectively at Inlet opening 3 and extraneous connection, are provided with cannelure 145 on body 1 side wall, and sleeve 141 are divided into by described cannelure 145 Two parts, are provided with block 144, described block 144 is slidably arranged in cannelure 145, in initial operating mode in connecting shaft 142 Under, described block 144, by pod apertures 143 middle part and the isolation of its two ends, is provided with pressure sensing on described inlet opening 3 madial wall Device 146, pressure sensor 146 is connected with the driving equipment for drive connection axle 142 by controller, and in connecting shaft 142 Outer wall is provided with corrosion protection axle sleeve 147, and corrosion protection axle sleeve 147 one end is connected with spheroid 5 side wall, and sleeve 141 inner side end has ring The buckling groove of shape, corrosion protection axle sleeve 147 other end is rotatably arranged in buckling groove.

For in prior art, when drilling meets abnormal pressure hydrocarbon formations, the gas stream on high-pressure oil gas stratum is in pressure Alter on effect is lower and drive mud to converge together to well head, gas stream is altered and causes Drilling Troubles, the lighter lead to well head overflow or Well kick, severe one can cause well control out of control it is generally the case that easily causing gas blowout accident, and inventor passes through to arrange blowout prevention in well head Device, by governor motion 14 to the connection cross-sectional sizes of inlet opening 3 adjust so that on the oil gas altered be blocked, that is, hinder Gas stream is altered on continuing, and prevents from altering the extension of the well head overflow causing or well kick accident in gas stream, it is to avoid well control mistake The generation adjusted, reduces the probability of happening of blowout, to reduce the impact to drilling progress for the drilling process mesohigh oil gas.

Concrete operations are as follows, when running into abnormal pressure hydrocarbon formations, by rotating connecting shaft 142 outside body 1 Extension is so that there is the rotation of certain angle in spheroid 5, and now the through hole 4 at spheroid 5 middle part is mutually completely cut off with inlet opening 3, Between upper ball base 13 and spheroid 5, the circulation road within body 1 is blocked, the gas stream above altered is blocked in below spheroid 5, this When inject drilling fluid to inlet opening 3 upper end, after spheroid 5 top is subject to the impact of drilling fluid, start to move down, spheroid 5 and upper ball base Gap occurs, drilling fluid is then flowed into the hypomere of inlet opening 3 by this gap location, finally by multiple in gripper shoe 9 between 13 Aperture 10 enters into be circulated kill-job operation in well, and then ensures being normally carried out of drilling well production operation.When running into exception During the hydrocarbon formations of high pressure, the dynamics that is hit of spheroid 5 and upper ball base 13 excessive it is easy to cause damage, therefore in body 1 Side wall on offer pod apertures 143, to be depressured to down-hole in time, and under initial operating mode, this pod apertures 143 all the time by Block 144 is blocked, and that is, inlet opening 3 cannot be connected with the external world by pod apertures 143, and work as down-hole pressure and reach a critical value When, needing spheroid 5 that the carrying out of inlet opening 3 is insulated, now rotating connecting shaft 143 so that while spheroid 5 rotates, carrying Dynamic block 144 rotates in cannelure 145, until pod apertures 143 are no longer influenced by limiting and are directly in communication with the outside, and this kind of company Logical mode is not to drain in the air by directly outer for oil gas, but by special container, this oil gas is collected；By spheroid 5 Packing to inlet opening 3 upper end, simultaneously by pod apertures 143 to the pressure release of inlet opening 3 side wall so that abnormal pressure in down-hole In the case of it is ensured that each part within body 1 is injury-free.Further, because the appearance of the abnormal pressure of down-hole is not advised Rule is so that cannot accomplish timely and effective during artificial inlet opening 3 opening and closing in regulation, and then leads to gas blowout accident to become high probability Event；Pressure sensor 146 is set in the middle part of inlet opening 3 inwall, monitor in real time can be carried out to the high-pressure oil gas stream of down-hole, once After down-hole pressure exceeds standard value, then by data signal transmission to controller, controller controls driving equipment to pressure sensor 146 Start to rotate connecting shaft 142, pass through in time spheroid 5 and the middle part of inlet opening 3 is blocked, it is to avoid artificial when adjusting not in time And lead to well kick phenomenon.Wherein, the core component that connecting shaft 142 rotates as spheroid, it is locally chronically exposed to high-pressure oil gas Under the continuous souring of stream and drilling fluid, and partly go up sheathed corrosion protection axle sleeve 147 in this connecting shaft 142, connection can be increased The anti-corrosion corrosion protection intensity of axle 142, it is to avoid in connecting shaft 142, serious corrosion occurs and lead to the rotation of spheroid to be lost efficacy.

The present embodiment also includes baffle ring 11 and closes the limited block that cyclization is constituted, baffle ring 11 by left ring body 2, right ring body 12 Be connected to the middle part of limited block, described upper ball base 13 upper surface is provided with stair-stepping contact surface, described limited block lower surface with And baffle ring 11 lower surface is connected with described contact surface respectively.On the oil gas altered be applied directly on spheroid 5 outer wall so that spheroid 5 By an applied stress vertically upward, same spheroid 5 can form certain impact to upper ball base 13, once and spheroid 5 Occur along beating on body 1 axis direction, the connecting shaft 142 being connected with spheroid 5 can distort and occur stress impaired, therefore exist Inlet opening 3 top setting limited block and baffle ring 11, can carry out two grades of reinforcings, it is to avoid upper ball base 13 is in body 1 to upper ball base 13 Interior occur loosening and extend the displacement that spheroid 5 moves upwards and produce it is ensured that spheroid 5 keeps steady in the Oil/gas Well of abnormal pressure Fixed working condition.

Wherein, the supporting positive cover 15 being connected with inlet opening 3 inwall is provided with described gripper shoe 9, on described supporting positive cover 15 End end extends upwardly to the middle part of spheroid 5.During the rotation being subject to the continuous impact of gas stream in spheroid 5 and carrying out, using helping Just covering 15 restrictions to spheroid 5 outer wall, to maintain spheroid 5 to do regular circular motion around it with the tie point of connecting shaft 142, preventing Only there is circular runout it is ensured that the stability of spheroid 5 and upper ball base 13 in spheroid 5.

Preferably, one end of connecting shaft 142 is connected with spheroid 5, its other end stretches out after running through sleeve 141, and The O-ring seal increasing on sleeve 141 inwall can improve body 1 air-tightness of itself, improves what spheroid 5 was altered on to down-hole The isolation effect of gas stream.And, the present embodiment also can brush on inlet opening 3, aperture 10 and through hole 4 inwall one layer anti-corrosion Coating, to reduce cavitation erosion or the corrosion phenomenon of in the hole wall, extends its service life.

Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect One step describes in detail, be should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, equivalent replaces Change, improve, should be included within protection domain of the present utility model.

Claims (1)

1. natural gas diaphragm valve, including body（1）, gripper shoe（9）, spheroid（5）And upper ball base（13）, in described body（1） Inside has inlet opening（3）It is characterised in that：Described gripper shoe（9）It is fixed on inlet opening（3）Bottom, upper ball base（13）Gu It is scheduled on inlet opening（3）Top and its internal and inlet opening（3）Connection, in gripper shoe（9）Middle part is provided with support shaft（8）, spring （7）It is set in support shaft（8）On, in gripper shoe（9）On have multiple apertures（10）, spring（7）Top be provided with limiting plate （16）, and limiting plate（16）Bottom and support shaft（8）Gap, lower ball base are left in top（6）It is fixed on limiting plate（16）On, described Upper ball base（13）With lower ball base（6）Between formed a spherical blowout prevention cavity, spheroid（5）It is rotatably arranged on described blowout prevention cavity Interior, and in described spheroid（5）Middle part has and inlet opening（3）The through hole of connection（4）；Also include governor motion（14）, described tune Section mechanism（14）Including running through body（1）The sleeve of side wall（141）And connecting shaft（142）, described connecting shaft（142）Rotate setting In sleeve（141）Interior, described connecting shaft（142）One end and spheroid（5）Top connects, connecting shaft（142）The other end is along body（1） Extend radially outwardly, in sleeve（141）It is provided with axis and connecting shaft（142）The pod apertures of diameter parallel（143）, pod apertures （143）Two ends respectively at inlet opening（3）And external world's connection, in body（1）Side wall is provided with cannelure（145）, and described Cannelure（145）By sleeve（141）It is divided into two parts, in connecting shaft（142）On block is installed（144）, described block （144）It is slidably arranged in cannelure（145）Interior, under initial operating mode, described block（144）By pod apertures（143）Middle part and its Two ends completely cut off, in described inlet opening（3）Pressure sensor is provided with madial wall（146）, pressure sensor（146）By controlling Device with for drive connection axle（142）Driving equipment connect, and in connecting shaft（142）Outer wall is provided with corrosion protection axle sleeve（147）, Corrosion protection axle sleeve（147）One end and spheroid（5）Side wall connects, sleeve（141）The buckling groove of annular, corrosion protection axle are had on inner side end Set（147）The other end is rotatably arranged in buckling groove；Also include baffle ring（11）And by left ring body（2）, right ring body（12）Closing The limited block that cyclization is constituted, baffle ring（11）It is connected to the middle part of limited block, described upper ball base（13）Upper surface is provided with stepped Contact surface, described limited block lower surface and baffle ring（11）Lower surface is connected with described contact surface respectively；In described gripper shoe （9）On be provided with and inlet opening（3）The supporting positive cover that inwall connects（15）, described supporting positive cover（15）Upper end end extends upwardly to ball Body（5）Middle part；In described sleeve（141）O-ring seal is additionally provided with inwall.