CN107989577A - Needle-valve for underwater horizontal type production tree - Google Patents
Needle-valve for underwater horizontal type production tree Download PDFInfo
- Publication number
- CN107989577A CN107989577A CN201711270017.9A CN201711270017A CN107989577A CN 107989577 A CN107989577 A CN 107989577A CN 201711270017 A CN201711270017 A CN 201711270017A CN 107989577 A CN107989577 A CN 107989577A
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- valve
- needle
- mandril
- installation chamber
- deck
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 74
- 238000007789 sealing Methods 0.000 claims description 40
- 239000003566 sealing material Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000191291 Abies alba Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of needle-valve for underwater horizontal type production tree, including valve seat, valve body, valve deck, needle and mandril, it is characterized in that：Valve seat, valve body and valve deck stack successively to be fixedly linked, and the inside of valve seat, valve body and valve deck is provided through an installation chamber along direction is stacked；The upper punched out at valve deck outer end to be pierced by for mandril of installation chamber；Needle and mandril are disposed with from front to back along the length direction of installation chamber；The front end of needle is conical tip shape structure；The back segment of needle is valve rod, and the leading portion of valve rod is located in the installation chamber in valve body, and the rear end of valve rod is located in the installation chamber in valve deck；The leading portion of mandril is located in the installation chamber in valve deck, and the front end of mandril is connected with the rear end of valve rod, has screw thread pair between the medial surface of the installation chamber in the lateral surface and valve deck of the leading portion of mandril.The present invention be used for underwater horizontal type production tree needle-valve there is simple and reliable for structure, compact, using it is simple the advantages of.
Description
Technical field
The invention belongs to the Control System of Fluid Conveying field in underwater horizontal type production tree, and in particular to one kind is used for underwater
The needle-valve of horizontal Christmas tree.
Background technology
Needle-valve（Valve plug is aciculiform）It is a kind of reset valve, reset valve requires valve port unlatching to become larger, so as to pipe
The flow on road is finely adjusted.Have in underwater horizontal type production tree largely need to control the pipeline of flow, still, water by installing needle-valve
Lower horizontal Christmas tree and flowline, oil pipeline etc. are all embedded（Laying）Under water, underwater environment has pressure height, environment
The advantages of severe, reliability and service life to needle-valve require high.
The needle-valve for being currently used for underwater horizontal type production tree is controlled using hydraulic system, therefore needs to set phase in needle-valve
The hydraulic cavities answered and driving piston control the opening and closing of needle-valve.But needle-valve can be increased by the needle-valve of HYDRAULIC CONTROL SYSTEM
Volume and structure complexity, higher using difficulty, reliability and service life are difficult to persistently ensure.
Based on this, applicant considers a kind of simple and reliable for structure, compact of design, using being simply to underwater horizontal type
The needle-valve of production tree.
The content of the invention
In view of the above shortcomings of the prior art, the technical problems to be solved by the invention are：How a kind of structure letter is provided
Single reliable, compact, uses the needle-valve for being simply to underwater horizontal type production tree.
In order to solve the above-mentioned technical problem, present invention employs following technical solution：
For the needle-valve of underwater horizontal type production tree, including valve seat, valve body, valve deck, needle and mandril, it is characterised in that：
The valve seat, valve body and valve deck stack successively to be fixedly linked, and the inside edge of the valve seat, valve body and valve deck stacks direction and passes through
Wear and be equipped with an installation chamber, be provided between two sides that arbitrary neighborhood contacts between the valve seat, valve body and valve deck
Gasket ring；
The upper installation chamber is the punched out being pierced by for the mandril at the valve deck outer end, and the installation chamber is located at
It is the input hole entered for medium at the valve seat outer end, the medial surface of the input hole is what internal diameter was gradually reduced from inside to outside
Taper barrel face；On the valve seat output for medium output is provided through on the side wall of the installation chamber
Hole；
The needle and mandril are disposed with from front to back along the length direction of the installation chamber；
The front end of the needle is the cone for installing input hole in chamber and described in the face of tip in the valve seat
Tip-shape structure；The back segment of the needle is valve rod, and the leading portion of the valve rod is located in the installation chamber in the valve body, described
The rear end of valve rod is located in the installation chamber in the valve deck；
The leading portion of the mandril is located in the installation chamber in the valve deck, and the front end of the mandril and the rear end of the valve rod
It is connected, has screw thread pair, the mandril between the medial surface of the installation chamber in the lateral surface and valve deck of the leading portion of the mandril
Back segment lateral surface and the medial surface of residing punched out between be connected to be slidingly sealed cooperation, described in the rear end of the mandril is located at
The outside of valve deck simultaneously forms manipulation end.
The needle-valve for underwater horizontal type production tree of the present invention has the following advantages：
1st, simple and reliable for structure, compact, assembles up simply efficiently, reason is：
By " valve seat, valve body and valve deck stack fixation successively " and " one is being set along stacking direction inside valve seat, valve body and valve deck
A installation chamber " installs needle and mandril.It so can fully utilize " valve seat, valve body and valve deck " internal to process peace
It behave affectedly room, it is ensured that while needle-valve compact；The common structural strength of " valve seat, valve body and valve deck " three can also be utilized
To ensure the structural strength of needle-valve entirety, so that it is guaranteed that the integrally-built fastness of needle-valve and reliability.
In addition, by the structure of " valve seat, valve body and valve deck stack fixation successively ", also allow for " valve seat, valve body and valve
When lid " three spreads out, needle, the fast inserted mandril in valve deck are rapidly inserted in valve body, then by before mandril
After end is connected with needle rear end；" valve seat, valve body and valve deck stack fixation successively " is finally completed to the assembling of needle-valve, therefore is assembled
Get up more simple efficient.
2nd, operate with simply, reason is：" in the lateral surface and valve deck of the leading portion of mandril installation chamber medial surface it
Between have screw thread pair " structure it is more simple, ensure needle-valve volume it is more compact while, only need to by rotate manipulation end come
Mandril rotation may be such that mandril moves along its axis, so as to easily control the switch of needle-valve, therefore use also more just
It is prompt.
Preferably, length direction of the part of the valve seat, valve body and valve deck by installation chamber along the installation chamber
Bolt connecting hole is provided through, the bolt connecting hole inside spin is screwed with connection bolt to cause valve seat, valve body and valve deck
It is fixedly linked.
Using above-mentioned bolt connecting hole and connection bolt, then will connection bolt be screwed in bolt connecting hole after, you can will
Valve seat, valve body and valve deck three are fixed together so that the structure being fixedly connected between " valve seat, valve body and valve deck " is more simple
Single, it is also more convenient that assembly connection gets up, beneficial to further lifting efficiency of assembling.
Preferably, the front end of the valve body has the grafting cylinder in the installation chamber being plugged in the valve seat, and institute
The medial surface for stating grafting cylinder is the circular cone cartridge type face that interior diameter gradually increases from inside to outside；
It is to be in valve seat on the needle that the needle, which has with the above-mentioned matched sealing surface in circular cone cartridge type face, the sealing surface,
The lateral surface of interior back segment, the sealing surface are that can be engaged when needle backs to bottom with above-mentioned circular cone cartridge type face to be formed
Sealing.
The setting of the grafting cylinder of above-mentioned valve body, can not only be plugged in valve seat by grafting cylinder and carry out just positioning, helped
Lift efficiency of assembling.It can also be engaged by the above-mentioned sealing surface of needle with above-mentioned circular cone cartridge type face to form sealing（Valve port
Open amount is maximum）, the leakproofness between lifting valve base and valve body.
Preferably, the gasket ring is BX gasket rings.
BX gasket rings are metal gasket ring, and pressure-bearing is high, leakproofness.When in use, outer ring and inner ring can be in high pressures with padding
The lateral surface or medial surface of annular groove are in contact to form pretightning force, it is ensured that the leakproofness during high pressure of inner or outer side.
Preferably, the rear end of the valve rod is T connector, the front end of the mandril is the L-type for catching on the T connector
Hook formation.
Connection structure between above-mentioned needle and mandril is not only simple in structure, it is easy to accomplish quick assembling；It can also pass through
Above-mentioned L-type hook accurately controls the amount of movement of needle with T connector, is precisely controlled so as to fulfill to needle-valve valve port size.
Preferably, pressure balance through hole, institute are provided through along the length direction of mandril on the front end face of the mandril
Pressure balance through hole is stated to connect the cavity for being located at two side of screw thread pair in the valve deck in mandril length direction.
The setting of above-mentioned pressure balance through hole, can will be located at the screw thread pair two in the valve deck in mandril length direction
Pressure balance is realized in the cavity connection of side, prevents pressure imbalance from causing mandril to be difficult to mobile situation, it is ensured that mandril rotation moves
Kinetic energy is enough more lasting reliable.
Preferably, it is provided with valve rod leak-proof structure, the valve rod leak-proof structure bag in installation chamber in the valve body
Include baffle ring, limit baffle ring, first order sealing and second level sealing；
The interior diameter of the interior front side end of the valve deck is less than the interior diameter of the interior rear side end of the valve body and forms limited step；Institute
The loop configuration that baffle ring is generally socketed on the valve rod is stated, rear end face and the limited step of the baffle ring abut against,
Limiting slot has been recessed positioned at the side of the medium position of installation chamber length direction in the valve body, the limit baffle ring
Outboard end is plugged in the limiting slot；
Sealing material has been filled with to form described first in the gap between valve rod and valve body on front side of the limit baffle ring
Level seals, and being filled with sealing material in the gap between valve rod and valve body between the limit baffle ring and the baffle ring carrys out structure
Sealed into the second level.
The setting of above-mentioned two-stage sealing, can significantly increase the sealing at valve rod, lift the pressure-resistant performance inside and outside needle-valve.
Preferably, the front end face of the first order sealing has V-groove.
When medium enters lip (among V-groove) position and produces pressure, tension force can be formed so that the outside of V-groove
Face is close to be connected with the sealing of corresponding sealing surface, plays the effect of enhancing sealing.
Preferably, the side wall of the punched out is provided with seal groove, BA sealing rings are provided with the seal groove.
So, BA sealing rings have the advantages that especially strong wearability, be easily installed with it is high pressure resistant, using above-mentioned close
Enable to mandril and punched out that there is more structurally sound sealing structure after seal structure, prevent seawater from entering.
Preferably, the needle-valve for underwater horizontal type production tree further includes needle-valve installation bolt and pilot hole；The valve
The length direction of part along the installation chamber of seat, valve body and valve deck by installation chamber is provided through the pilot hole, institute
State needle-valve installation to be inserted into pilot hole with bolt, the needle-valve installation is limited at the valve deck with the bolt head of bolt, institute
One end away from bolt head on needle-valve installation bolt is stated to run through the pilot hole and expose.
Using above-mentioned needle-valve installation with bolt and pilot hole needle-valve is fixedly mounted when, can not only pass through needle-valve installation use
One end away from bolt head is fixedly attached to needle-valve installation place on bolt, additionally it is possible to passes through the bolt head of needle-valve installation bolt
Further to compress valve seat, valve body and valve deck, the reliability of the connection between three is further enhanced.
Compared with prior art, the needle-valve for underwater horizontal type production tree of the invention has the following advantages that：
1st, the structure that valve deck, valve body are fixed on valve seat by connecting bolt, have it is simple and reliable for structure, what is be easily assembled is excellent
Point；Sealed between the adjacent side of valve deck, valve body and valve seat using BX gasket rings, reliability is high, service life length.
2nd, metal to metal seal is may make up between needle front end and the valve seat conical surface, between needle inverted cone surface and the valve body conical surface
It may make up back seal.
3rd, there is screw thread pair between mandril and valve deck by T-shaped structure and L-type hook connects between mandril and needle；Pass through rotation
Turning mandril drives needle movement to be turned on and off so as to fulfill needle-valve valve port.
Brief description of the drawings
Fig. 1 is the sectional view for the needle-valve that the present invention is used for underwater horizontal type production tree.
Fig. 2 is that the present invention is used for the stereochemical structure that the needle-valve of underwater horizontal type production tree is connected with ROV interfaces and extension rod
Schematic diagram.
Fig. 3 is the enlarged drawing of ROV interfaces.
In figure mark for：
1 valve seat：101 input holes, 102 delivery outlets；
2 valve bodies：21 grafting cylinders, 22 baffle rings, 23 limit baffle rings, the sealing of 24 first order, the sealing of 25 second level；
3 valve decks；
4 needle-valve installation bolts；
5BX gasket rings；
6 needles；
7 mandrils：71 pressure balance through holes；
8 connection bolts；
9BA sealing rings；
10 extension rods；
11ROV interfaces：12 pointers.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.Wherein, for description using it is such as upper and lower, left,
The exemplary term such as right, it is therefore intended that help reader to understand, without being intended for limiting.
As shown in Figure 1 to Figure 3,
Using one end where the valve seat 1 as front end in the present embodiment, using one end where valve deck 3 as rear end.
For the needle-valve of underwater horizontal type production tree, including valve seat 1, valve body 2, valve deck 3, needle 6 and mandril 7, the valve seat
1st, valve body 2 and valve deck 3 stack be fixedly linked successively, and setting is run through in the inside of the valve seat 1, valve body 2 and valve deck 3 along direction is stacked
There is an installation chamber, sealing is provided between two sides that arbitrary neighborhood contacts between the valve seat 1, valve body 2 and valve deck 3
Gasket ring；
The upper installation chamber is the punched out being pierced by for the mandril 7 at 3 outer end of valve deck, the installation chamber position
Be the input hole 101 entered for medium at 1 outer end of valve seat, the medial surface of the input hole 101 for internal diameter from inside to outside
The taper barrel face being gradually reduced；One is provided through on the side wall of the installation chamber supply medium on the valve seat 1
The delivery outlet 102 of output；
The needle 6 and mandril 7 are disposed with from front to back along the length direction of the installation chamber；
The front end of the needle 6 is the circle for installing input hole 101 in chamber and described in the face of tip in the valve seat 1
Cone point shape structure；The back segment of the needle 6 is valve rod 61, and the leading portion of the valve rod 61 is located at the installation in the valve body 2
In chamber, the rear end of the valve rod 61 is located in the installation chamber in the valve deck 3；
The leading portion of the mandril 7 is located in the installation chamber in the valve deck 3, and the front end of the mandril 7 and the valve rod 61
Rear end be connected, have screw thread pair between the medial surface of the installation chamber in the lateral surface and valve deck 3 of the leading portion of the mandril 7,
It is connected between the back segment lateral surface of the mandril 7 and the medial surface of residing punched out to be slidingly sealed cooperation, after the mandril 7
End is positioned at the outside of the valve deck 3 and forms manipulation end.
During implementation, the screw thread pair between mandril 7 and valve deck 3 is threadedly coupled using 1-3/8-6UN.On the needle-valve of the present invention
The manipulation end of mandril 7 is connected to transmit rotation torque by extension rod 10 with ROV interfaces 11, can so pass through ROV（Water
Lower robot）Rotation manipulation is carried out to needle-valve, rotating cycle is 3/4 circle, and is provided with the ROV interfaces 11 and is seen easy to ROV
Examine and for the pointer 12 of position instruction.
Wherein, the part of the valve seat 1, valve body 2 and valve deck 3 by installation chamber is passed through along the length direction of the installation chamber
Wear and be equipped with bolt connecting hole, the bolt connecting hole inside spin is screwed with connection bolt 8 to cause valve seat 1, valve body 2 and valve deck
3 are fixedly linked.
During implementation, preferred bolt connecting hole is at least two set in the circumferential uniform intervals for installing chamber.
Wherein, the front end of the valve body 2 has the grafting cylinder 21 in the installation chamber being plugged in the valve seat 1, and institute
The medial surface for stating grafting cylinder 21 is the circular cone cartridge type face that interior diameter gradually increases from inside to outside；
It is to be in valve on the needle 6 that the needle 6, which has with the above-mentioned matched sealing surface in circular cone cartridge type face, the sealing surface,
The lateral surface of back segment in seat 1, the sealing surface are that can be engaged to come with above-mentioned circular cone cartridge type face when needle 6 backs to bottom
Form sealing.
Wherein, the gasket ring is BX gasket rings 5.
Wherein, the rear end of the valve rod 61 is T connector, and the front end of the mandril 7 is the L-type for catching on the T connector
Hook formation.
Wherein, pressure balance through hole 71, institute are provided through along the length direction of mandril 7 on the front end face of the mandril 7
Pressure balance through hole 71 is stated to connect the cavity for being located at two side of screw thread pair in the valve deck 3 in 7 length direction of mandril.Pressure
Balance through hole 71 realizes the perforation of two cavities above and below screw thread pair, so as to fulfill the pressure balance of two cavities, prevents fluid power from closing
Lock.
Wherein, 61 sealing structure of valve rod, the 61 sealing structure bag of valve rod are provided with the installation chamber in the valve body 2
Include baffle ring 22, limit baffle ring 23, first order sealing 24 and second level sealing 25；
The interior diameter of the interior front side end of the valve deck 3 is less than the interior diameter of the interior rear side end of the valve body 2 and forms limited step；
The baffle ring 22 is generally socketed in the loop configuration on the valve rod 61, rear end face and the limited step of the baffle ring 22
Abut against, limiting slot, the limit have been recessed positioned at the side of the medium position of installation chamber length direction in the valve body 2
The outboard end of position baffle ring 23 is plugged in the limiting slot；
It is described to form that sealing material has been filled with gap between the valve rod 61 and valve body 2 of the front side of limit baffle ring 23
The first order seals 24, fills and sets in the gap between valve rod 61 and valve body 2 between the limit baffle ring 23 and the baffle ring 22
Sealing material is put to form the second level sealing 25.
During implementation, preferably sealing material is packing seal.
Wherein, the front end face of the first order sealing 24 has V-groove.
Wherein, the side wall of the punched out is provided with seal groove, and BA sealing rings 9 are provided with the seal groove.
During implementation, preferably described seal groove is at least two set along the axially spaced-apart of punched out.
Wherein, the needle-valve for underwater horizontal type production tree further includes needle-valve installation bolt 4 and pilot hole；The valve seat 1,
The length direction of part along the installation chamber of valve body 2 and valve deck 3 by installation chamber is provided through the pilot hole, described
Needle-valve installation bolt 4 is inserted into pilot hole, and the needle-valve installation is limited at the valve deck 3 with the bolt head of bolt 4, institute
One end away from bolt head on needle-valve installation bolt 4 is stated to run through the pilot hole and expose.
Above-mentioned needle-valve can be used in underwater horizontal type production tree injecting fluid, control hydraulic pressure, the partition isolation for testing fluid,
Isolating valve, as GTV, THV, BPST, SCSSV, ICVC, ICVO.Above-mentioned needle-valve, rated operating pressure 10000psi.Needle-valve with
Tree body（Or other security principals）Between connected using needle-valve assembling bolt 4, the gasket ring between needle-valve and tree body is
BX151。
Above-mentioned needle-valve is when in use：
During positive hour hands rotation mandril 7, the screw thread pair driving mandril downlink between mandril and valve deck, promotes needle to close needle-valve.
Counterclockwise during rotation mandril 7, the screw thread pair driving mandril uplink between mandril and valve deck, pulls needle to open pin
Valve.
7 end set of mandril has connecting hole, easy to be connected with external ROV operation tube.
It the above is only the preferred embodiment of the present invention, need to point out it is not depart from this skill for those skilled in the art
On the premise of art scheme, several modifications and improvements can also be made, the technical solution of above-mentioned modification and improvement equally should be considered as
Enter the scope that the claims are claimed.
Claims (10)
1. for the needle-valve of underwater horizontal type production tree, including valve seat, valve body, valve deck, needle and mandril, it is characterised in that：
The valve seat, valve body and valve deck stack successively to be fixedly linked, and the inside edge of the valve seat, valve body and valve deck stacks direction and passes through
Wear and be equipped with an installation chamber, be provided between two sides that arbitrary neighborhood contacts between the valve seat, valve body and valve deck
Gasket ring；
The upper installation chamber is the punched out being pierced by for the mandril at the valve deck outer end, and the installation chamber is located at
It is the input hole entered for medium at the valve seat outer end, the medial surface of the input hole is what internal diameter was gradually reduced from inside to outside
Taper barrel face；On the valve seat output for medium output is provided through on the side wall of the installation chamber
Hole；
The needle and mandril are disposed with from front to back along the length direction of the installation chamber；
The front end of the needle is the cone for installing input hole in chamber and described in the face of tip in the valve seat
Tip-shape structure；The back segment of the needle is valve rod, and the leading portion of the valve rod is located in the installation chamber in the valve body, described
The rear end of valve rod is located in the installation chamber in the valve deck；
The leading portion of the mandril is located in the installation chamber in the valve deck, and the front end of the mandril and the rear end of the valve rod
It is connected, has screw thread pair, the mandril between the medial surface of the installation chamber in the lateral surface and valve deck of the leading portion of the mandril
Back segment lateral surface and the medial surface of residing punched out between be connected to be slidingly sealed cooperation, described in the rear end of the mandril is located at
The outside of valve deck simultaneously forms manipulation end.
2. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：The valve seat, valve body and
The length direction of part along the installation chamber of the valve deck by installation chamber is provided through bolt connecting hole, described to be bolted
Hole inside spin is screwed with connection bolt come so that valve seat, valve body and valve deck are fixedly linked.
3. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：The front end tool of the valve body
Have be plugged in the valve seat installation chamber in grafting cylinder, and the medial surface of the grafting cylinder for interior diameter from inside to outside by
Cumulative big circular cone cartridge type face；
It is to be in valve seat on the needle that the needle, which has with the above-mentioned matched sealing surface in circular cone cartridge type face, the sealing surface,
The lateral surface of interior back segment, the sealing surface are that can be engaged when needle backs to bottom with above-mentioned circular cone cartridge type face to be formed
Sealing.
4. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：The gasket ring is BX
Gasket ring.
5. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：The rear end of the valve rod is
T connector, the front end of the mandril are the L-type hook formation for catching on the T connector.
6. the needle-valve according to claim 5 for underwater horizontal type production tree, it is characterised in that：The front end face of the mandril
On along the length direction of mandril be provided through pressure balance through hole, the pressure balance through hole will be grown in the valve deck in mandril
Degree direction is located at the cavity connection of two side of screw thread pair.
7. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：Installation in the valve body
Valve rod leak-proof structure is provided with chamber, the valve rod leak-proof structure includes baffle ring, limit baffle ring, first order sealing and the second level
Sealing；
The interior diameter of the interior front side end of the valve deck is less than the interior diameter of the interior rear side end of the valve body and forms limited step；Institute
The loop configuration that baffle ring is generally socketed on the valve rod is stated, rear end face and the limited step of the baffle ring abut against,
Limiting slot has been recessed positioned at the side of the medium position of installation chamber length direction in the valve body, the limit baffle ring
Outboard end is plugged in the limiting slot；
Sealing material has been filled with to form described first in the gap between valve rod and valve body on front side of the limit baffle ring
Level seals, and being filled with sealing material in the gap between valve rod and valve body between the limit baffle ring and the baffle ring carrys out structure
Sealed into the second level.
8. the needle-valve according to claim 7 for underwater horizontal type production tree, it is characterised in that：The first order sealing
Front end face has V-groove.
9. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：The side wall of the punched out
Seal groove is provided with, BA sealing rings are provided with the seal groove.
10. the needle-valve according to claim 1 for underwater horizontal type production tree, it is characterised in that：Further include needle-valve installation
With bolt and pilot hole；The part of the valve seat, valve body and valve deck by installation chamber is passed through along the length direction of the installation chamber
Wear and be equipped with the pilot hole, the needle-valve installation is inserted into pilot hole with bolt, the bolt of the needle-valve installation bolt
Head is limited at the valve deck, and one end away from bolt head through the pilot hole and is exposed on the needle-valve installation bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270017.9A CN107989577B (en) | 2017-12-05 | 2017-12-05 | Needle valve for underwater horizontal Christmas tree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711270017.9A CN107989577B (en) | 2017-12-05 | 2017-12-05 | Needle valve for underwater horizontal Christmas tree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107989577A true CN107989577A (en) | 2018-05-04 |
| CN107989577B CN107989577B (en) | 2020-04-07 |
Family
ID=62035816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711270017.9A Active CN107989577B (en) | 2017-12-05 | 2017-12-05 | Needle valve for underwater horizontal Christmas tree |
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| Country | Link |
|---|---|
| CN (1) | CN107989577B (en) |
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| CN107237892A (en) * | 2017-04-25 | 2017-10-10 | 甘肃天恩重工科技有限公司 | A kind of improved high-voltage needle-valve and its quick change method |
| CN207526457U (en) * | 2017-11-29 | 2018-06-22 | 重庆前卫科技集团有限公司 | Underwater horizontal type production tree |
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| JP2000193131A (en) * | 1998-12-25 | 2000-07-14 | Nippon Kuatsu System Kk | Needle valve |
| CN102644760A (en) * | 2012-04-26 | 2012-08-22 | 西南石油大学 | Sealing structure of ultrahigh-pressure needle valve |
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| CN105257829A (en) * | 2015-10-15 | 2016-01-20 | 上海市计量测试技术研究院 | Ultrahigh-pressure stop valve |
| CN107237892A (en) * | 2017-04-25 | 2017-10-10 | 甘肃天恩重工科技有限公司 | A kind of improved high-voltage needle-valve and its quick change method |
| CN207526457U (en) * | 2017-11-29 | 2018-06-22 | 重庆前卫科技集团有限公司 | Underwater horizontal type production tree |
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| CN107989577B (en) | 2020-04-07 |
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