CN108167481A - A kind of underground one-way cock - Google Patents
A kind of underground one-way cock Download PDFInfo
- Publication number
- CN108167481A CN108167481A CN201810041328.6A CN201810041328A CN108167481A CN 108167481 A CN108167481 A CN 108167481A CN 201810041328 A CN201810041328 A CN 201810041328A CN 108167481 A CN108167481 A CN 108167481A
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- CN
- China
- Prior art keywords
- torsional spring
- guide rod
- valve plate
- valve seat
- underground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000007789 sealing Methods 0.000 claims description 35
- 238000005452 bending Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 12
- 239000012530 fluid Substances 0.000 description 10
- 230000002708 enhancing effect Effects 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
- F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
Abstract
The present invention provides a kind of underground one-way cocks, including valve seat, the valve plate being set on valve seat, one end of valve plate is rotatablely connected by shaft and valve seat, valve seat is equipped with guide rod and the torsional spring being set on guide rod, guide rod is arranged on the side of shaft, one torque arm of torsional spring is connect with valve plate, another torque arm is connect with valve seat, and torsional spring drive valve plate, which rotates around the axis, makes valve plate reset closing.Present embodiments can apply to downhole safety field of tool, by setting guide rod in the side of shaft, torsional spring is set on guide rod, make the flexible for installation, convenient of torsional spring and safety is firm, by the way that guide rod is set as arc or is symmetrical arranged double guide rods, torsional spring installation space is made effectively to increase, the torsional spring number of turns increases, solves the problem of length and position for because torsional spring is set in valve plate shaft, making torsional spring in the prior art are limited, cause torsional spring entirety fatigue resistance low.The present invention has torsional spring fatigue resistance strong, and valve plate resets the advantages of safety and reliability closed is high.
Description
Technical field
The present invention relates to a kind of downhole safety tool more particularly to a kind of underground one-way cocks.
Background technology
Safety valve is a kind of for closing fluid channel, realizes the constructional device of the block function of oily tube fluid.According to
The related regulations of national marine Oil Safety production, offshore gas well, flowing well, from overflowing, well should install storm valve, prevent well
Lower fluid surprisingly on return and damage to ocean platform and marine environment.
Conventional storm valve at present, the fixed form being set in using torsional spring in valve plate shaft, since valve plate turns
The length of axis is limited by installation space, therefore the length of torsional spring is restricted, and causes the torsional spring number of turns less, individual pen torsional spring institute
It is larger by stress, fatigue failure is easily generated, underground one-way cock is made, which to reset the reliability closed, to be reduced.
Invention content
In order to solve the above technical problem, the present invention provides a kind of torsional spring mounting means simple and flexible, easy to assembly, companies
Connect that firm, torsional spring fatigue resistance is strong, valve plate resets the reliable underground one-way cock of closed safe.
In order to reach the purpose of the present invention, the technical solution that the present invention takes is as follows：
The present invention provides a kind of underground one-way cock, including valve seat, the valve plate being set on the valve seat, the valve
One end of plate is rotatablely connected by shaft and the valve seat；The valve seat is equipped with guide rod and the torsion being set on the guide rod
Spring, the guide rod are arranged on the side of the shaft, and a torque arm of the torsional spring is connect with the valve plate, the torsional spring it is another
One torque arm is connect with the valve seat, and the torsional spring drives the valve plate to close the valve plate around shaft rotation.
In the present invention, one end of valve plate is rotatablely connected by shaft and valve seat, and valve seat is equipped with guide rod and is set in guide rod
On torsional spring, guide rod is fixed on the side of shaft, and a torque arm of torsional spring is connect with valve plate, another torque arm and valve seat of torsional spring
Connection.In the oil gas recovery process of underground, the valve plate of underground one-way cock is closed, and valve plate is closely connected to valve seat
On；When needing to carry out tube fluid output by oil pipe, the mobile oil-gas pipeline body interior being connect with valve seat it is hollow interior
Pipe generates the inner face of valve plate thrust, and thrust, which pushes valve plate to laterally rotate around the shaft, makes underground be opened with one-way cock, makes
Oil gas is exported from inner tube；After output, inner tube is moved backward, inner tube disappears to the thrust of valve plate, and valve plate is reversed in torsional spring to be become
Turning to the inside around the shaft under the action of the elastic restoring force of shape resets valve plate, and valve plate restores closed state, to ensure underground
Normal work, uphole equipment safety.
By setting guide rod, and torsional spring is set on guide rod in the side of shaft, middle torsional spring is straight compared with the prior art
It connects in the valve plate shaft, the present invention can be by optimizing installation position, structural form and the fixed form of guide rod so that torsional spring
Mounting means simple and flexible, it is easy to assembly and safety it is firm, to ensure the job stability of torsional spring, solve existing safety
Because torsional spring is set in valve plate shaft in valve, the length of torsional spring and position are limited by the length and position of valve plate shaft, are led
The cause torsional spring number of turns is less, and stress suffered by individual pen torsional spring is larger, easily leads to the problem of fatigue failure, makes the torsional spring knot in the present invention
The safety and reliability higher of structure, to ensure the safety and reliability of underground one-way cock opening and closing.
Optionally, the guide rod is set as arc, and the torsional spring is arc-shaped.
By setting arc guide rod so that the arc-shaped side for being distributed in shaft of torsional spring being set on guide rod increases
The setting length of guide rod is arranged the effective length space increase of torsional spring, makes the installation number of turns of torsional spring can increase as much as possible, into
And the stress that torsional spring torsion drive valve plate is made to reset when closing suffered by individual pen reduces, it is meant that individual pen torsional spring only needs to provide smaller
Torque just can drive valve plate rotate around the axis with reset, make valve plate closing be more prone to；In addition, the increase of guide rod length, has
Conducive to the pitch between increase torsional spring circle, to reduce the resistance that the friction between torsional spring circle generates torsional spring torsion, torsional spring is reduced
Abrasion between circle so as to extend the service life of torsional spring structure, and then improves the safety of torsional spring resetting structure and reliable
Property.
Optionally, the guide rod includes the first guide rod and the second guide rod, first guide rod and second guide rod difference
It is arranged on the both sides of the shaft；
The torsional spring includes the first torsional spring and the second torsional spring, and first torsional spring and second torsional spring are respectively sleeved at institute
It states on the first guide rod and second guide rod.
In the present invention, by being symmetrical arranged the first guide rod and the second guide rod in the both sides of shaft, covered respectively on each guide rod
If a torsional spring, make the arc-shaped both sides for being distributed in shaft of torsion spring, a torque arm of each torsional spring is connect with valve plate, each torsional spring
Another torque arm connect with valve seat.When inner tube pushes valve plate rotating opening, drive is connected to the first torsional spring on valve plate
One torque arm and a torque arm of the second torsional spring rotate, and the first torsional spring and the second torsional spring twist deformation, and generate torsion
Square is acted on valve plate, is rotated around the axis reset with drive valve plate, and underground one-way cock is made to restore closed state.
By setting double guide rods and torsion spring structure, compared to single guide rod and single torsional spring structure, not only make torsional spring entirety
The number of turns increases, the reset torque bigger integrally generated, and valve plate, which resets to close, to be more prone to, also, during torsional spring torsion suffered by individual pen
Stress further reduce, make the fatigue resistance of torsional spring entirety enhance；Make the reset response dynamic balance suffered by valve plate both sides simultaneously,
Be conducive to improve the use reliability of the underground one-way cock, prolong the service life.Even if underground one-way cock is in underground
It opens and closes back and forth, in the case of causing single torsional spring fatigue failure, since the torque of single torsional spring also makes valve enough
Sheet reset is closed, and underground is made to remain to work normally with one-way cock, to ensure the reliability of underground one-way cock closing.
Optionally, it is set on the valve seat there are two axle bed, the shaft is mounted between two axle beds, the guide rod
Positioned at the outside of two axle beds, and one end of the guide rod is fixedly connected with the axle bed.
One end of guide rod can be not only fixedly connected with axle bed, can also be directly fixedly connected with valve seat.
Optionally, the end of the guide rod is equipped with bending part, and the valve seat is equipped with location hole, and the bending part is inserted into institute
It states in location hole and fixed.
Optionally, the end face of the valve seat is equipped with location hole, and the peripheral surface of the valve seat is equipped with threaded hole, described
Location hole is connected with the threaded hole, and the bending part is pressed abd fixed in the location hole by trip bolt.
When guide rod is installed, torsional spring is set on guide rod first, then one end of guide rod is mounted on to the outside of axle bed,
The bending part of the other end is inserted into the location hole on valve seat, the threaded hole on valve seat is passed through to compress bending part using trip bolt
It is fixed in location hole, the other end of guide rod is made to be clamped securely on valve seat, so as to ensure the job stability of torsional spring.
Optionally, the end face of the valve seat is equipped with card slot, and the card slot is located at the lower section of the guide rod, the torsional spring
Another torque arm be connected in the card slot.
In the present invention, a torque arm of torsional spring is connected in card slot, and the end of the torque arm is connected to the card in card slot
On cell wall, so as to being defined to the position of the torque arm, fixed form of the torque arm in card slot is simple, it is ensured that torsional spring it is effective
Property.
Optionally, the valve plate is equipped with the balance hole of perforation, and balance plunger, the balance are equipped in the balance hole
Plunger can move to open or close the balance hole in the balance hole.
Under valve plate closed state, balance plunger will balance bore closure, when needing to carry out tube fluid output, mobile inner tube
The balance plunger protruded relative to valve plate inner face is contacted first, and balance plunger is pushed out to send as an envoy to balance plunger and balance hole
Between generate gap, outside connection in valve plate is made to realize pressure balance, so that inner tube quickly moves and pushes valve plate open；It is same with this
When, balance plunger resets be re-closing off balance hole rapidly after balance hole pressure release.
Optionally, the underground further includes elastomeric element, one end of the elastomeric element and the valve plate with one-way cock
It is connected, the other end of the elastomeric element is mutually fixed with the balance plunger；
Alternatively, the underground further includes elastomeric element, one end of the elastomeric element and the valve seat phase with one-way cock
Connection, the other end of the elastomeric element are mutually fixed with the balance plunger.
One end of elastomeric element is connect with valve plate or valve seat, and the other end is mutually fixed with balance plunger, and elastomeric element can band
Dynamic balancing plunger is moved relative to balance hole.Under valve plate closed state, balance plunger is pressed against flat by the other end of elastomeric element
Bore closure will be balanced in weighing apparatus hole, and trim control is carried out to balance plunger.When inner tube contact balance plunger by balance hole open with
After realizing valve plate internal and external pressure balance, drive balance plunger rapid by the elastic restoring force that elastomeric element generates and multiple in time
Position, will balance bore closure again.
Since plate spring structure is simple, elastic acting force is stablized, and be conducive to carry out damping to the trim movement of balance plunger,
Therefore elastomeric element can preferentially be set as leaf spring.
Optionally, the inner face of the valve plate is equipped with the sealing surface of valve plate of taper, and the upper surface of the valve seat is equipped with valve seat
Sealing surface, the valve plate to its inside rotation close when, the sealing surface of valve plate and the sealing surface of seat close fit.
When valve plate resets closing under the elastic acting force of torsional spring, closely pasted with sealing surface of seat by sealing surface of valve plate
Conjunction can be by valve base sealing.The conical seal (contact) face structure design is conducive to increase the area of sealing surface, improves between valve plate and valve seat
Sealing performance.The middle sealing structure using gasket compared with the prior art, the present invention directly utilize valve plate and valve seat itself
Metallic sealing section be sealed, simplify sealing structure, due to during the one-way cock use of underground metallic sealing section with
Oil gas medium in pipeline is in direct contact, resistance to corrosion enhancing, is more advantageous to improving sealing reliability when valve plate is closed,
Extend the service life of underground one-way cock.
Compared to the prior art the present invention, has the advantages that：
1st, by setting guide rod in the side of shaft, torsional spring is set on guide rod, make torsional spring mounting means simple and flexible,
Easy to assembly and safety is firm, solves because torsional spring is set in valve plate shaft in existing safety valve, the length of torsional spring and position
Put the problem of limited；
2nd, by setting arc guide rod, make the arc-shaped distribution of torsional spring, increase the space of installation torsional spring, the torsional spring number of turns increases
More, the fatigue resistance enhancing of torsional spring entirety, valve plate, which resets to close, to be easier；
3rd, by setting double guide rods and torsion spring structure, the number of turns of torsional spring entirety is made further to increase, whole reset is turned round
Square bigger, and balance higher, valve plate, which resets to close, to be more prone to, reliability higher；
4th, by setting bending part in guide rod end, and guide rod is fixed firmly in valve seat with location hole and threaded hole cooperation
On, make the installation of guide rod and torsional spring more securely, ensure torsional spring job stability；
5th, by setting balance hole and balance plunger on valve plate, outside in the connection and then realization in outside in valve plate is realized
Pressure balance, so that inner tube quickly moves and pushes valve plate open；
6th, by being equipped with elastomeric element on balance plunger, make the reset of balance plunger rapid and accurate；
7th, by the metallic sealing section close fit on valve plate and valve seat, simplify sealing structure, ensure valve plate and valve seat it
Between sealing reliability, improve the resistance to corrosion of sealing surface.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being understood by implementing the present invention.The purpose of the present invention and other advantages can be by specification, rights
Specifically noted structure is realized and is obtained in claim and attached drawing.
Description of the drawings
Attached drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this
The embodiment of application technical solution for explaining the present invention together, does not form the limitation to technical solution of the present invention.
Fig. 1 is the structure diagram according to the use state of the underground one-way cock of one embodiment of the invention；
Fig. 2 is the structure diagram of the underground one-way cock (closed state) described in Fig. 1；
Fig. 3 is the structure diagram of the underground one-way cock (opening state) described in Fig. 2, wherein torsional spring is omitted.
Wherein, the relationship in Fig. 1-Fig. 3 between reference numeral and component names is：
1 valve seat, 101 location holes, 102 threaded holes, 103 card slots, 104 sealing surface of seats, 2 valve plates, 201 balance holes, 202
Mounting groove, 203 sealing surface of valve plate, 3 shafts, 4 axle beds, 501 first guide rods, 502 second guide rods, 601 first torsional springs, 602 second
Torsional spring, 7 balance plungers, 8 leaf springs, 9 pipe main bodies, 901 inner tubes.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature mutually can arbitrarily combine.
Underground one-way cock provided in this embodiment, as shown in Figure 1, including valve seat 1, the valve plate being set on valve seat 1
2, the lower section of valve seat 1 is connect with oil-gas pipeline main body 9, and pipe main body 9 is internally provided with inner tube 901, and inner tube 901 is in hollow circuit cylinder
Shape, 2 rotating opening of valve plate can be pushed by its cylindric tube wall by moving up inner tube 901, and the hydrocarbon fluids of underground can be by interior
The hollow pipeline output of pipe 901.
Specifically, as shown in Figures 2 and 3, in the present embodiment, one end of valve plate 2 is rotatablely connected by shaft 3 and valve seat 1,
Shaft 3 can be independently arranged, and passed through and be fixedly connected in the perforation axis hole of 2 one end of valve plate with valve seat 1, and shaft 3 can also be direct
It is arranged on valve plate 2, and then is directly fixedly connected with valve seat 1.Valve seat 1 is equipped with guide rod and the torsional spring being set on guide rod.This
Embodiment employs double guide rods and torsion spring structure setting, and wherein guide rod includes the first guide rod 501 and the second guide rod 502, and first
501 and second guide rod 502 of guide rod is symmetrically fixed on the both sides of shaft 3 and arc-shaped distribution；Torsional spring includes 601 He of the first torsional spring
Second torsional spring 602, the first torsional spring 601 and the second torsional spring 602 are separately fixed on the first guide rod 501 and the second guide rod 502.It is each
One torque arm of torsional spring is connect with valve plate 2, another torque arm of each torsional spring is connect with valve seat 1.
In the oil gas recovery process of underground, valve plate 2 is closed, and the inner face of valve plate 2 is closely connected to the upper of valve seat 1
On end face.Specifically, when needing to carry out tube fluid output by oil pipe, inner tube 901 inside pipe main body 9 is to moving up
It is dynamic, as shown in figure 3, the inner face to valve plate 2 generates thrust, valve plate 2 is pushed 3 to laterally rotate around the shaft and open valve plate 2, is made
Hydrocarbon fluids are exported from inner tube 901；When output, which finishes, to be needed to close valve plate 2, inner tube 901 is moved backward, inner tube 901 is to valve plate
2 thrust disappears, and valve plate 2 is made to rotate reset under the elastic acting force of torsional spring torsional deflection, one-way cock is extensive until underground
Returning to customs closed state, to ensure that underground works normally, uphole equipment safety.
In the present embodiment, by being symmetrical arranged the first guide rod 501 and the second guide rod 502 in the both sides of shaft 3, and by
One torsional spring 601 and the second torsional spring 602 are respectively sleeved on the first guide rod 501 and the second guide rod 502, compared with the prior art in
Torsional spring is directly installed in valve plate shaft, and the present invention can be made by optimizing installation position, structural form and the fixed form of guide rod
Mounting means simple and flexible, the easy to assembly and safety for obtaining torsional spring are firm, to ensure the job stability of torsional spring, solve existing
Safety valve in be set in valve plate shaft because of torsional spring, the length of torsional spring and position are by the length of valve plate shaft and limiting for position
System, causes the torsional spring number of turns less, stress suffered by individual pen torsional spring is larger, easily leads to the problem of fatigue failure.It is of course also possible to
The side of shaft 3 sets a guide rod, and is arranged torsional spring and forms single torsional spring structure, since the torque of single torsional spring also makes valve plate enough
2 reset closing, can equally ensure reliability and the safety of underground one-way cock closing.
By the way that the first guide rod 501 and the second guide rod 502 are set as arc, increase it and length is set so that be set in
The 602 arc-shaped both sides for being distributed in shaft 3 of the first torsional spring 601 and the second torsional spring on first guide rod 501 and the second guide rod 502,
I.e. the installation space of the first torsional spring 601 and the second torsional spring 602 increases, and makes the installation number of turns of the first torsional spring 601 and the second torsional spring 602
It can increase as much as possible, and then the first torsional spring 601 and the second torsional spring 602 is made to twist deformation with the reset closing of drive valve plate 2
When individual pen suffered by stress reduce, it is meant that individual pen torsional spring only need to provide smaller torque just can drive valve plate 2 reset, make valve
The closing of plate 2 is more prone to；In addition, the increase of 502 length of the first guide rod 501 and the second guide rod, is conducive to increase the first torsional spring 601
Pitch between 602 individual pen of the second torsional spring to reduce the resistance that the friction between individual pen generates torsional spring torsion, reduces individual pen
Between abrasion, so as to extend the service life of 602 structure of the first torsional spring 601 and the second torsional spring, and then improve the first torsional spring
601 and second torsional spring 602 resetting structure safety and reliability.
Compared to single guide rod and single torsional spring structure, by setting double guide rods and torsion spring structure in the present embodiment, not only make
The number of turns of torsional spring entirety further increases, and makes the reset torque bigger integrally generated, and valve plate 2 is made to reset closing and is more prone to, and
And first stress when reversing suffered by individual pen of torsional spring 601 and the second torsional spring 602 further reduce, make whole antifatigue of torsional spring
Property enhancing；It is also beneficial to the balance of the first torsional spring 601 of both sides and the elastic acting force of the second torsional spring 602 simultaneously, makes valve plate 2
Reset response dynamic balance suffered by both sides, so as to ensure the closing reliability of underground one-way cock height, service life is long.Even if
With one-way cock in the case where underground reciprocating repeatedly opens and closes and causes single torsional spring fatigue failure, dependence is single for underground
The torque of torsional spring also makes valve plate 2 reset closing enough, and underground is made to remain to work normally with one-way cock, to ensure underground with unidirectionally
The reliability of the valve plate 2 of valve.
Further, as shown in Fig. 2, being set on valve seat 1 there are two axle bed 4, respectively positioned at the both sides of shaft 3, shaft 3
Both ends be mounted between two axle beds 4, one end of valve plate 2 is made to pass through shaft 3 and is connect with axle bed 4, and then realization valve plate 2
One end is rotatablely connected with valve seat 1；One end of first guide rod 501 and one end of the second guide rod 502 are attached separately to the outside of axle bed 4
In mounting hole, one end of the first guide rod 501 and one end of the second guide rod 502 is made to be fixed respectively with 1 phase of valve seat.
Further, the other end of guide rod has the bending part bent downward, and the upper surface of valve seat 1 is equipped with location hole
101, the lateral wall of valve seat 1 is equipped with threaded hole 102, and location hole 101 is connected with threaded hole 102.Specifically, it is first during installation
First the bending part of guide rod is inserted into the location hole 101 on the upper surface of valve seat 1, the other end of guide rod is made to be fixed on location hole
In 101, then pass through the threaded hole 102 on the lateral wall of valve seat 1 that bending part is pressed abd fixed on location hole using trip bolt
In 101, the other end of guide rod is made to be clamped securely on valve seat 1.
Further, as shown in figure 3, the lateral wall of valve seat 1 is equipped with card slot 103, card slot 103 is located at the lower section of guide rod,
By the way that a torque arm of torsional spring is connected on valve plate 2, another torque arm of torsional spring is connected in card slot 103, and the torque arm
End is connected on 103 wall of card slot, so as to be defined to the position of the torque arm, fixed form letter of the torque arm in card slot 103
It is single, it is ensured that the validity of torsional spring.
Further, it as shown in Fig. 2, valve plate 2 is equipped with the balance hole 201 of up/down perforation, is equipped in balance hole 201 flat
Weigh plunger 7, and under 2 closed state of valve plate, balance plunger 7 closes balance hole 201.Specifically, when need carry out tube fluid it is defeated
When going out, the inner tube 901 inside ground control system control pipeline main body 9 moves up, due to being put down under 201 closed state of balance hole
The lower end of weighing apparatus plunger 7 protrudes from the inner face (as shown in Figure 1) of valve plate 2, and the inner tube 901 moved up contacts valve plate 2 first
The balance plunger 7 that inner face protrudes above, and balance plunger 7 is pushed out to send as an envoy to and is generated between balance plunger 7 and balance hole 201
Gap makes the oil gas circulation in outside in valve plate 2 realize pressure balance, is internally managed with the inside oil-air pressure for reducing 2 inside of valve plate
901 drag effects moved up enable inner tube 901 quickly to move and push valve plate 2 open；Meanwhile it is put down after completing 201 pressure release of balance hole
Weighing apparatus plunger 7, which resets rapidly, is re-closing off balance hole 201；Then, the inner tube 901 moved up contacts the inner end of valve plate 2
Face, and torsional spring active force and 2 its own gravity of valve plate is overcome to make 2 rotating opening of valve plate, realize hydrocarbon fluids output.When stopping exports
When needing to use one-way cock under closed-in well, ground control system control inner tube 901 moves backward, at this time the inner face of valve plate 2
Thrust disappears, and valve plate 2 resets under torsional spring torsional deflection active force, until restoring closed state, torsional spring also restores original at this time
State.
Further, as shown in Fig. 2, one end of elastomeric element is connect with valve plate 2 or valve seat 1, the other end and balance columns
The upper end (being located on the outer surface of valve plate 2) of plug 7 is mutually fixed, and elastomeric element can drive balance plunger 7 to be transported relative to balance hole 201
It is dynamic.Specifically, under 2 closed state of valve plate, balance plunger 7 is pressed against in balance hole 201 by the other end of elastomeric element will balance
Hole 201 is closed, and carries out trim control to balance plunger 7.Balance hole 201 is opened with reality when inner tube 901 contacts balance plunger 7
After existing underground one-way cock internal and external pressure balance, drive balance plunger 7 rapid by the elastic restoring force that elastomeric element generates
And reset in time, balance hole 201 is closed again.
In the present embodiment, elastomeric element is preferably leaf spring 8, since leaf spring 8 is simple in structure, elastic acting force is stablized, and
Be conducive to carry out damping to the trim movement of balance plunger 7, by the way that one end of leaf spring 8 and the fixation of 7 phase of balance plunger can will be made
Balance plunger 7 is pressed firmly against the outer end of balance hole 201 under 201 closed state of balance hole, will be put down when balance plunger 7 moves upwards
It weighs after the opening of hole 201 and 2 internal and external pressure balance of valve plate, it is rapid and timely multiple that leaf spring 8 generates elastic restoring force driving balance plunger 7
Position, again closes balance hole 201.
Further, the mounting groove 202 (as shown in Fig. 2) for accommodating leaf spring 8 is also set on the outer surface of valve plate 2, is installed
The presence of slot 202 makes the installation of leaf spring 8 and fixation more convenient, while plays certain limiting and guiding role to leaf spring 8,
The fixed balance plunger 7 of one end when moving up and down of leaf spring 8 is enable to be directed at balance hole 201 always, avoids balance plunger 7 de-
Cause what balance hole 201 can not close or be not closed completely to happen from generating to deviate after balance hole 201, so as to improve balance
The reset reliability of plunger 7.
Further, as shown in figures 1 and 3, the inner face of valve plate 2 is equipped with the sealing surface of valve plate 203 of taper, valve seat 1
Upper surface be equipped with sealing surface of seat 104, when valve plate 2 turns to the upper surface with valve seat 1 under the reset response power of torsional spring,
It fits closely and the upper surface of valve seat 1 can be sealed by sealing surface of valve plate 203 and sealing surface of seat 104.The conical seal (contact) face knot
Structure is designed with conducive to increase sealing surface area, improves the sealing performance between valve plate 2 and valve seat 1.In the present embodiment, valve plate 2 with
Valve seat 1 is made of metal, compared with the prior art in sealing surface on install additional gasket be sealed, the present invention directly exist
Valve plate 2 simplifies sealing structure, due to underground one-way cock with setting metallic sealing section on the metal end face of valve seat 1 itself
Metallic sealing section is in direct contact with the oil gas medium in pipeline during use, and resistance to corrosion enhancing is conducive to improve valve
The sealing reliability that plate 2 is closed extends the service life of underground one-way cock.
In description in the present embodiment, it is to be understood that term " on ", " under ", " top ", " interior ", " outer ", " circumferential direction "
Wait the orientation of instructions or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and
Simplify description rather than instruction or imply that signified structure has specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more this feature.
Although disclosed herein embodiment as above, the content only for ease of understanding the present invention and use
Embodiment is not limited to the present invention.It should be appreciated that underground one-way cock provided in this embodiment can also be applied to
In the unidirectional underground one-way cock of others outside the unidirectional underground one-way cock in underground.Skill in any fields of the present invention
Art personnel, do not depart from disclosed herein spirit and scope under the premise of, can be carried out in the form and details of implementation
Any modification and variation, but the scope of patent protection of the present invention, the appended claims that must still be subject to are defined.
Claims (10)
1. a kind of underground one-way cock, including valve seat, the valve plate being set on the valve seat, one end of the valve plate is by turning
Axis is rotatablely connected with the valve seat；It is characterized in that,
The valve seat is equipped with guide rod and the torsional spring being set on the guide rod, and the guide rod is arranged on the side of the shaft,
One torque arm of the torsional spring is connect with the valve plate, another torque arm of the torsional spring is connect with the valve seat, the torsional spring
The valve plate is driven to close the valve plate around shaft rotation.
2. underground one-way cock according to claim 1, which is characterized in that the guide rod is set as arc, the torsion
Spring is arc-shaped.
3. underground one-way cock according to claim 2, which is characterized in that
The guide rod includes the first guide rod and the second guide rod, and first guide rod and second guide rod are separately positioned on described turn
The both sides of axis；
The torsional spring includes the first torsional spring and the second torsional spring, and first torsional spring and second torsional spring are respectively sleeved at described the
On one guide rod and second guide rod.
4. underground one-way cock according to any one of claim 1-3, which is characterized in that the valve seat is equipped with two
A axle bed, the shaft are mounted between two axle beds, and the guide rod is located at the outside of two axle beds, and described are led
One end of bar is fixedly connected with the axle bed.
5. underground one-way cock according to any one of claim 1-3, which is characterized in that the end of the guide rod is set
There is bending part, the valve seat is equipped with location hole, and the bending part is inserted into the location hole and fixed.
6. underground one-way cock according to claim 5, which is characterized in that the end face of the valve seat is equipped with positioning
Hole, the peripheral surface of the valve seat are equipped with threaded hole, and the location hole is connected with the threaded hole, by trip bolt by institute
Bending part is stated to be pressed abd fixed in the location hole.
7. underground one-way cock according to any one of claim 1-3, which is characterized in that the end face of the valve seat
Card slot is equipped with, the card slot is located at the lower section of the guide rod, another torque arm of the torsional spring is connected in the card slot.
8. underground one-way cock according to any one of claim 1-3, which is characterized in that the valve plate is equipped with and passes through
Logical balance hole, is equipped with balance plunger in the balance hole, and the balance plunger can be moved in the balance hole with will
The balance hole opens or closes.
9. underground one-way cock according to claim 8, which is characterized in that the underground further includes bullet with one-way cock
Property component, one end of the elastomeric element is connected with the valve plate, the other end of the elastomeric element and the balance plunger
It is mutually fixed；
Alternatively, the underground further includes elastomeric element with one-way cock, one end of the elastomeric element is connected with the valve seat,
The other end of the elastomeric element is mutually fixed with the balance plunger.
10. underground one-way cock according to any one of claim 1-3, which is characterized in that the inner end of the valve plate
Face is equipped with the sealing surface of valve plate of taper, and the upper surface of the valve seat is equipped with sealing surface of seat, and the valve plate is closed to its inside rotation
When closing, the sealing surface of valve plate and the sealing surface of seat close fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041328.6A CN108167481A (en) | 2018-01-16 | 2018-01-16 | A kind of underground one-way cock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041328.6A CN108167481A (en) | 2018-01-16 | 2018-01-16 | A kind of underground one-way cock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108167481A true CN108167481A (en) | 2018-06-15 |
Family
ID=62514936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810041328.6A Pending CN108167481A (en) | 2018-01-16 | 2018-01-16 | A kind of underground one-way cock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167481A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111021988A (en) * | 2020-01-03 | 2020-04-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Control device for drilling string and application |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111434881A (en) * | 2019-01-15 | 2020-07-21 | 中国石油天然气股份有限公司 | Check valve |
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| US6328062B1 (en) * | 1999-01-13 | 2001-12-11 | Baker Hughes Incorporated | Torsion spring connections for downhole flapper |
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| CN206860965U (en) * | 2017-06-19 | 2018-01-09 | 上海天纳克排气系统有限公司 | Air bleeding valve |
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| US6328062B1 (en) * | 1999-01-13 | 2001-12-11 | Baker Hughes Incorporated | Torsion spring connections for downhole flapper |
| US20040231728A1 (en) * | 2003-05-23 | 2004-11-25 | Eaton Corporation | Flapper type fill tube check valve |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111434881A (en) * | 2019-01-15 | 2020-07-21 | 中国石油天然气股份有限公司 | Check valve |
| CN111101893A (en) * | 2019-12-28 | 2020-05-05 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111101893B (en) * | 2019-12-28 | 2021-12-14 | 中海油能源发展股份有限公司 | Safety valve of underground oil well pump |
| CN111021988A (en) * | 2020-01-03 | 2020-04-17 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Control device for drilling string and application |
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