CN206668213U - A kind of underground vent valve - Google Patents
A kind of underground vent valve Download PDFInfo
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- CN206668213U CN206668213U CN201720123344.0U CN201720123344U CN206668213U CN 206668213 U CN206668213 U CN 206668213U CN 201720123344 U CN201720123344 U CN 201720123344U CN 206668213 U CN206668213 U CN 206668213U
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Abstract
Disclosed herein is a kind of underground vent valve, including outer barrel and lower contact, the top of outer barrel is provided with pressurizing port, in addition to piston cylinder and the piston component in piston cylinder；Piston cylinder includes the first cylinder and the second cylinder being connected, and the first cylinder is arranged on the inner side of outer barrel, and the lower end of the second cylinder extends the outside of outer barrel；The bottom of outer barrel is connected by the second cylinder with lower contact, and the lower end of the second cylinder is provided with steam vent, and the bottom of piston component is blocked in the through hole of lower contact；The outside of piston component is provided with first step, and the driving cavity of annular is formed between first step and the second cylinder, and driving cavity connects with pressurizing port, for hydraulic pressure to be transferred into driving cavity from pressurizing port, and drives piston component to act.The application is related to offshore production well top completion tool field, this application discloses a kind of underground vent valve, the state of pressure transient when can avoid the occurrence of opening and closing, reaches accurate control and smooth exhaust.
Description
Technical field
The application relates to, but are not limited to offshore production well top completion tool field, more particularly to a kind of underground vent valve.
Background technology
Electric submersible pump completion technique is widely used to domestic offshore oil and gas field at present, and vent valve is in electric submersible pump completion technique
Ensure the aid of electric submersible pump normal operation, be typically mounted at the top of cable penetration type packer, its effect is artificially
Control on and off realizes control annular space liquid level to prevent electric submersible pump from producing cavitation erosion.
Conventional vent valve is the on off state that control vent valve is suppressed from top pressurizing port.Its piston structure has one
Fixed design defect, stress sealing surface on two different two parts, cause its alignment not ensure, so as to make respectively
It presently, there are such as into the vent valve：Production and processing is difficult, cost is high, opens and closes pressure transient and antidetonation, anti-to knock
The problems such as touching effect difference.
Utility model content
The technical problem that the application solves is to provide a kind of underground vent valve, can effectively overcome what prior art co-existed in
Defect, underground vent valve can be avoided to open and close the state of pressure transient, reach accurate control and smooth exhaust, can
The alignment inside the vent valve of underground is realized, to effectively improve antidetonation and anti-effect of colliding with.
In order to solve the above technical problems, this application provides a kind of underground vent valve, including outer barrel and lower contact, outer barrel
Top is provided with pressurizing port, it is characterised in that the piston component also including piston cylinder and in the piston cylinder；
The piston cylinder includes the first cylinder and the second cylinder being connected, and first cylinder is arranged on the interior of outer barrel
Side, the lower end of second cylinder extend the outside of the outer barrel；The bottom of the outer barrel is connect by second cylinder with
Head connection, the lower end of second cylinder are provided with steam vent, and the bottom of the piston component is blocked in the through hole of lower contact；
The outside of the piston component is provided with first step, and the drive of annular is formed between the first step and the second cylinder
Dynamic cavity, the driving cavity are connected with pressurizing port, for hydraulic pressure to be transferred into the driving cavity from the pressurizing port, and driven
The dynamic piston component action.
Preferably, the contact surface of second cylinder and piston is additionally provided with the first sealing ring and the second sealing ring, described
First sealing ring is arranged on above the first step, and second sealing ring is arranged on the lower section of the driving cavity.
Preferably, the piston component includes being arranged on piston and spring in piston cylinder, the spring upper end with it is described
First cylinder is offseted, and the upper end connection of the spring and piston, under the elastic force effect of the spring, the lower end of the piston is supported
In the through hole of lower contact, the piston is slidably connected with second cylinder.
Preferably, the side wall of second cylinder offers the radial direction pressure transmission hole for connecting the driving cavity and pressurizing port.
Preferably, piston includes main body and seal head, and the lower end of the main body is connected with seal head, second cylinder
Inwall sets the second step of pan position on the restricted seal head in the top of seal head.
Preferably, the seal head is metal sealing head, and the lower contact is metal lower contact.
Preferably, the outside of first cylinder, which is provided with, is used for the chute excessively for expanding liquid stream.
Preferably, it is provided with the 3rd sealing ring between the contact surface of first cylinder and the second cylinder；The outer barrel with
The contact surface of second cylinder is provided with the 4th sealing ring.
Preferably, the main body and the contact surface of seal head junction are provided with the 5th sealing ring.
The application above-mentioned technical proposal has the advantages that：
The application completes the unlatching of underground vent valve by above-mentioned piston cylinder and the action of the piston component in piston cylinder
Change with closed mode, its overall structure principle is simple, is easily assembled；Wherein, the outside of piston component is provided with first step, and first
The driving cavity of annular is formed between step and the second cylinder, driving cavity connects with pressurizing port, for by hydraulic pressure from pressurizing port
Driving cavity is transferred to, and drives piston component to act, it realizes that the structure of pressure transmission is simple, and simplifies processing technology.
Further, by the piston and spring that are arranged in piston bucket, the restoring force and compression of piston are provided by spring,
In underground, spring can provide the power that piston compresses lower contact enough during deflation valve closed mode, and can be provided in opening
Enough restoring forces, it also has higher rigidity and stronger antiseptic property.
Further, by offering the radial direction pressure transmission hole of connection driving cavity and pressurizing port in the side wall of the second cylinder,
Ensure that the two effectively connects, and its processing technology is simple, has good bearing capacity.
Further, separable piston is formed by main body and seal head, makes piston disassembled simply, convenient cleaning and zero
The replacing of part；And seal head connection and the second step of the second cylinder inboard wall coordinate, the upper pan position of piston can be effectively limited,
Ensure that underground vent valve fails because piston excessively moves up.
Further, it is metal sealing head by seal head and lower contact is metal lower contact, is formed between metal and metal
Sealing, it ensures that sealing property is reliable, and pressure-resistant rank is high, suitable for the high pressure operating mode of underground.
Further, chute was set by the outside of the first cylinder, by increasing capacitance it is possible to increase the flow of liquid, be more quickly completed
The opening and closing operation of underground vent valve, makes emergency shutdown more reliable safely.
Further, sealing ring is set to ensure that underground vent valve does not leak and seal and pressure bearing by multiple positions, either
In order to ensure the alignment of piston；The first sealing ring and the second sealing ring between piston and the second cylinder, can ensure two it is close
Front cover is definitely coaxial, also ensures that in the case where driving cavity constantly fills hydraulic pressure, its liquid will not from piston and piston cylinder it
Between leak out；The 3rd sealing ring is provided between the contact surface of first cylinder and the second cylinder, ensures that both hold in the sealing of connection
Pressure；The contact surface of outer barrel and the second cylinder is provided with the 4th sealing ring, ensure inside the vent valve of underground with external environment definitely every
From；The contact surface of main body and seal head junction is provided with the 5th sealing ring, ensures that both directly seal, and also effectively prevent from sealing
Head departs from main body.
Other features and advantage will illustrate in the following description, also, partly become from specification
Obtain it is clear that or being understood by implementing the utility model embodiment.The purpose of the application and other advantages can by
Specifically noted structure is realized and obtained in specification, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical scheme, and a part for constitution instruction, with this
The embodiment of application is used for the technical scheme for explaining the application together, does not form the limitation to technical scheme.
Fig. 1 is the structural representation of the utility model embodiment one；
Fig. 2 is close-up schematic view at Fig. 1 B；
Fig. 3 is the schematic diagram of first cylinder of the utility model embodiment two；
Fig. 4 is Fig. 3 Section A-A schematic diagram.
Reference：It is lateral that 1- outer barrels, 101- pressurizing ports, the cylinders of 2- first, 201- cross chute, the cylinders of 3- second, 301-
Pressure transmission hole, 302- second steps, 4- springs, 5- pistons, 501- main bodys, 502- seal heads, 503- first steps, 6- lower contacts,
The sealing rings of 7- first, 8 second sealing rings, the sealing rings of 9- the 3rd, the sealing rings of 10- the 4th, the sealing rings of 11- the 5th, 12- steam vents,
13- drives cavity.
Embodiment
To make present invention purpose, technical scheme and beneficial effect of greater clarity, below in conjunction with the accompanying drawings to this
The embodiment of application is illustrated, it is necessary to illustrate, in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Embodiment one
As shown in figure 1, the underground vent valve that the utility model embodiment one provides, annular space liquid level is controlled for realizing
To prevent electric submersible pump from producing cavitation erosion.Underground vent valve includes outer barrel 1, lower contact 6, piston cylinder and the piston group in piston cylinder
Part, the top of outer barrel 1 are provided with pressurizing port 101, and pressurizing port 101 can be connected with hydraulic control lines, be using hydraulic control lines
Underground vent valve provides hydraulic pressure.
Further, referring to Fig. 1 and Fig. 2, piston cylinder includes the first cylinder 2 and the second cylinder 3 being connected, the first cylinder 2
The inner side of outer barrel 1 is arranged on, the lower end of the second cylinder 3 extends the outside of outer barrel 1；The bottom of outer barrel 1 is by the second cylinder 3 with
Joint 6 connects, and the lower end of the second cylinder 2 is provided with steam vent 12, and the bottom of piston component is blocked in the through hole of lower contact 6,
It is closed underground vent valve, gas can not discharge from the through hole of lower contact 6 through steam vent 12.The outside of piston component
Provided with first step 503, the driving cavity 13 of annular is formed between the cylinder 3 of first step 503 and second, driving cavity 13 is with beating
Pressure hole 101 is connected, and for hydraulic pressure to be transferred into driving cavity 13 from pressurizing port 101, and drives piston component to act.
Further, piston component includes being arranged on piston 5 and spring 4 in piston cylinder, the upper end of spring 4 with first
Body 2 is offseted, and spring 4 is connected with the upper end of piston 5, and under the elastic force effect of spring 4, the lower end of piston 5 is against the logical of lower contact 6
At hole, it is slidably connected between the cylinder 3 of piston 5 and second；The side wall of second cylinder 3 offers connection driving cavity 13 and pressurizing port
101 radial direction pressure transmission hole 301, radial direction pressure transmission hole 301 is arranged on its lower edge of driving cavity 13, referring to Fig. 1 and Fig. 2.Outside
1 and there is gap in cylinder, hold liquid stream by, the unilateral gap for still having 0.19-0.325mm between the piston cylinder on the inside of it,
The present embodiment ajusts its gap in 0.2mm.One is thus constituted from pressurizing port 101 to the complete passage of driving cavity 13.
Further, piston 5 includes main body 501 and seal head 502, and the wherein lower end of main body 501 connects with seal head 502
Connect, be preferably threadedly coupled, be easy for installation and removal, can also use other connected modes such as interference fit；Seal head 502 is in inversion
Mushroom, the diameter of its lower end is more than the diameter of main body 501；The inwall of second cylinder 3 is provided with the top of seal head 502
Limit the second step 302 of pan position on seal head 502.Seal head 502 is metal sealing head, and lower contact 6 is metal lower contact,
Metal to metal seal dependable performance, pressure-resistant rank are high.
In addition, in order to ensure that underground vent valve does not leak and seal and pressure bearing, or in order to ensure the alignment of piston, also
Multiple positions are provided with sealing ring.Referring to Fig. 1 and Fig. 2, the contact surface of the second cylinder 3 and piston 5 is additionally provided with the first sealing
The sealing ring 8 of circle 7 and second, wherein, the first sealing ring 7 is arranged on the top of first step 503, and the second sealing ring 8 is arranged on footpath
To the lower section (lower section for driving cavity 13) of pressure transmission hole 301, the surface of piston 5 is provided with the seal groove of annular, the first sealing ring 7
It is filled in the second sealing ring 8 in seal groove, can ensures that two sealing surfaces of piston are definitely coaxial, so that underground vent valve
Working stability, it also ensures that its liquid will not be between piston and piston cylinder in the case where driving cavity constantly fills hydraulic pressure
Leak out；The 3rd sealing ring 9 is provided between the contact surface of first cylinder 2 and the second cylinder 3, ensures that both hold in the sealing of connection
Pressure；The contact surface of the cylinder 3 of outer barrel 1 and second is provided with the 4th sealing ring 10, ensures exhausted with external environment inside the vent valve of underground
To isolation；The contact surface of main body 501 and the junction of seal head 502 is provided with the 5th sealing ring 11, ensures that both directly seal,
Prevent seal head 502 from departing from main body 501.
Vent valve is closed under initial well, as shown in Figure 1, it is necessary to open underground vent valve and discharge gas to control
During annulus liquid level height processed, hydraulic control lines connect the pressurizing port of underground vent valve first, are carried out by hydraulic control lines
Operation is suppressed, liquid enters from pressurizing port, come by the gap between outer barrel and piston cylinder at radial direction pressure transmission hole；Liquid is from footpath
Entered to pressure transmission hole in driving chamber body, due to continuous influent, the pressure in driving chamber body is stepped up, so as to be formed
Piston uptrend.When hydraulic pressure overcome enough piston gravity and spring active force when, then promote piston move up, from
And the through hole of lower contact is unsealed, allow gas to discharge through steam vent again from through hole, now underground vent valve is in opening.
When seal head is moved to the second step of piston cylinder, second step limitation seal head is moved up, and underground vent valve is opened in maximum
Position is opened, the discharge quantity for having maximum.It is calm to grasp exhaust so as to control the opening degree of underground vent valve by hydraulic pressure
Amount.
In addition, when needing to install the underground vent valve, its installation steps is as follows：
1) clean and lubricate each parts, the first sealing ring of installation, the second sealing ring, the 3rd sealing ring, the 4th sealing ring,
5th sealing ring；
2) main body of piston is put into from the second cylinder upper end, seal head is put into from the lower end of the second cylinder, utilizes length
Inner hexagon spanner connects main body and seal head；
3) spring is put into the second cylinder, the first cylinder is connected on the second cylinder；
4) install on lower contact to the second cylinder；
5) installation between outer barrel and the second cylinder finally, is carried out.
Embodiment two：
The substantive difference of embodiment two and embodiment one is：The outside of first cylinder is provided with the excessively stream for being used for expanding liquid stream
Groove.
The underground vent valve that the utility model embodiment two provides also includes outer barrel, lower contact, piston cylinder and located at piston
Piston component in cylinder, the top of outer barrel are provided with pressurizing port, and pressurizing port can be connected with hydraulic control lines, use hydraulic control pipe
Line provides hydraulic pressure for underground vent valve.Piston cylinder includes the first cylinder and the second cylinder being connected, and the first cylinder is arranged on outer
The inner side of cylinder, the lower end of the second cylinder extends the outside of outer barrel 1；The bottom of outer barrel is connected by the second cylinder with lower contact, the
The lower end of two cylinders is provided with steam vent, and the bottom of piston component is blocked in the through hole of lower contact, is in underground vent valve
Closed mode, gas can not discharge from the through hole of lower contact through steam vent.The outside of piston component is provided with first step, First
The driving cavity of annular is formed between rank and the second cylinder, driving cavity is connected with pressurizing port, for by hydraulic pressure from pressurizing port
Driving cavity is transferred to, and drives piston component to act.
Further, referring to Fig. 3 and Fig. 4, the outside of the first cylinder, which is provided with, is used for the chute 201 excessively for expanding liquid stream, multiple
Cross chute 201 to be evenly distributed on its section, it can be milled out by machine, and it can increase liquid communication between outer barrel and the first cylinder
Sectional area.
In concrete operations, because being provided with chute, the flow of liquid is added, underground vent valve can be more quickly completed
Operation is opened and closed, emergency shutdown is safe and reliable.
In conjunction with the embodiments one and embodiment two understand that the application overall structure principle is simple, assembling is easy, and processing technology is not
Complexity, it can effectively save processing cost.The piston component and piston cylinder of the application coordinates, and radial direction pressure transmission hole is opened in side, its
Structure design takes into full account production process property, and its two internal sealing surface can ensure definitely coaxially, to ensure piston at it
Smooth during internal motion, working condition is stable, and anti-seismic performance is good.The application seal head is metal sealing head, lower contact
It is high for metal lower contact, metal to metal seal dependable performance, pressure-resistant rank.First cylinder of underground vent valve is provided with excessively stream
Groove, the flow of liquid is added, the opening and closing operation of underground vent valve can be more quickly completed, emergency shutdown safely may be used
Lean on.
In the description of the present application, term " installation ", " connected ", " connection ", " fixation " etc. all should be interpreted broadly, example
Such as, " connection " can be fixedly connected or be detachably connected, or be integrally connected；Can be joined directly together, can also
It is indirectly connected by intermediary.For the ordinary skill in the art, above-mentioned art can be understood as the case may be
The concrete meaning of language in this application.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean to combine at least one reality that specific features, structure, material or the feature that the embodiment or example describe are contained in the application
Apply in example or example.In this manual, identical embodiment or reality are not necessarily referring to the schematic representation of above-mentioned term
Example.Moreover, description specific features, structure, material or feature can in any one or more embodiments or example with
Suitable mode combines.
Although those skilled in the art should be understood that embodiment disclosed by the utility model embodiment as above,
Described content is only the embodiment for readily appreciating the utility model embodiment and using, and is not limited to the utility model
Embodiment.Technical staff in any the utility model embodiment art, is taken off not departing from the utility model embodiment
On the premise of the spirit and scope of dew, any modification and change, but this practicality can be carried out in the form and details of implementation
The scope of patent protection of new embodiment, still should be subject to the scope of the claims as defined in the appended claims.
Claims (9)
1. a kind of underground vent valve, including outer barrel and lower contact, the top of outer barrel is provided with pressurizing port, it is characterised in that also includes
Piston cylinder and the piston component in the piston cylinder；
The piston cylinder includes the first cylinder and the second cylinder being connected, and first cylinder is arranged on the inner side of outer barrel, institute
The lower end for stating the second cylinder extends the outside of the outer barrel；The bottom of the outer barrel is connected by second cylinder and lower contact
Connect, the lower end of second cylinder is provided with steam vent, and the bottom of the piston component is blocked in the through hole of lower contact；
The outside of the piston component is provided with first step, and the driving chamber of annular is formed between the first step and the second cylinder
Body, the driving cavity connect with pressurizing port, for hydraulic pressure to be transferred into the driving cavity from the pressurizing port, and drive institute
State piston component action.
2. underground vent valve as claimed in claim 1, it is characterised in that the contact surface of second cylinder and piston is also set up
There are the first sealing ring and the second sealing ring, first sealing ring is arranged on above the first step, second sealing ring
It is arranged on the lower section of the driving cavity.
3. underground vent valve as claimed in claim 1, it is characterised in that the piston component includes being arranged in piston cylinder
Piston and spring, the spring upper end offset with first cylinder, the upper end connection of the spring and piston, in the spring
Elastic force effect under, the lower end of the piston is against the through hole of lower contact, and the piston is slidably connected with second cylinder.
4. underground vent valve as claimed in claim 1, it is characterised in that the side wall of second cylinder is offered described in connection
Drive the radial direction pressure transmission hole of cavity and pressurizing port.
5. underground vent valve as claimed in claim 1, it is characterised in that piston includes main body and seal head, the main body
Lower end is connected with seal head, and the inwall of second cylinder sets pan position on the restricted seal head in the top of seal head
Second step.
6. underground vent valve as claimed in claim 5, it is characterised in that the seal head is metal sealing head, is connect under described
Head is metal lower contact.
7. underground vent valve as claimed in claim 1, it is characterised in that the outside of first cylinder, which is provided with, to be used to expand liquid
Stream crosses chute.
8. the underground vent valve as described in claim 1-7 is any, it is characterised in that first cylinder connects with the second cylinder
The 3rd sealing ring is provided between contacting surface；The contact surface of the outer barrel and the second cylinder is provided with the 4th sealing ring.
9. underground vent valve as claimed in claim 5, it is characterised in that the main body and the contact surface of seal head junction are set
It is equipped with the 5th sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123344.0U CN206668213U (en) | 2017-02-10 | 2017-02-10 | A kind of underground vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720123344.0U CN206668213U (en) | 2017-02-10 | 2017-02-10 | A kind of underground vent valve |
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| Publication Number | Publication Date |
|---|---|
| CN206668213U true CN206668213U (en) | 2017-11-24 |
Family
ID=60379101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720123344.0U Active CN206668213U (en) | 2017-02-10 | 2017-02-10 | A kind of underground vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206668213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155966A (en) * | 2019-12-28 | 2020-05-15 | 中海油能源发展股份有限公司 | Underground annular emergency opening device |
-
2017
- 2017-02-10 CN CN201720123344.0U patent/CN206668213U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155966A (en) * | 2019-12-28 | 2020-05-15 | 中海油能源发展股份有限公司 | Underground annular emergency opening device |
| CN111155966B (en) * | 2019-12-28 | 2022-02-25 | 中海油能源发展股份有限公司 | Underground annular emergency opening device |
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Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |