CN203516832U - Two-position three-way valve for wellhead safety control system - Google Patents

Two-position three-way valve for wellhead safety control system Download PDF

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Publication number
CN203516832U
CN203516832U CN201320514760.5U CN201320514760U CN203516832U CN 203516832 U CN203516832 U CN 203516832U CN 201320514760 U CN201320514760 U CN 201320514760U CN 203516832 U CN203516832 U CN 203516832U
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CN
China
Prior art keywords
valve
valve body
control system
medium runner
spool
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.)
Expired - Fee Related
Application number
CN201320514760.5U
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Chinese (zh)
Inventor
王伟
张勇
曾超
王祖静
江远新
李亮
文柳英
徐勇
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CHONGQING DATENG TECHNOLOGY DEVELOPMENT Co Ltd
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CHONGQING DATENG TECHNOLOGY DEVELOPMENT Co Ltd
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Priority to CN201320514760.5U priority Critical patent/CN203516832U/en
Application granted granted Critical
Publication of CN203516832U publication Critical patent/CN203516832U/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a two-position three-way valve, in particular to the two-position three-way valve for a wellhead safety control system. The two-position three-way valve for the wellhead safety control system comprises a valve body. A valve core is mounted in an inner cavity of the valve body, the valve core is placed at the left end of the valve body under the action of spring force of a spring, and a valve deck and a medium passage hole D are mounted at the left end of the valve body. A medium passage hole A and a medium passage hole B are placed in the same side wall of the valve body, and a medium passage hole C is placed in the side wall opposite to the side wall where the medium passage hole A and the medium passage hole B are placed. The inner cavity of the valve body is a through hole, and the through hole is blocked through the valve core. An increasing valve cavity is formed in the left end of the inner cavity of the valve body, an increasing valve cavity head is mounted in the increasing valve cavity, the left end of the spring abuts against the increasing valve cavity head, and the right end of the spring abuts against the inner cavity wall of the increasing valve cavity. Due to the structure, the two-position three-way valve for the wellhead safety control system has the advantages that the movement speed is increased, the airtightness is improved, the control pressure is low, meanwhile, the structure is simple, a normally-opened control mode and a normally-closed control mode are achieved, and the two-position three-way valve can be adapted to pneumatic and hydraulic drive wellhead safety control systems.

Description

Well head safe control system two position three-way valve
Technical field
The utility model relates to two position three-way valve, specifically a kind of simple in structure, improve movement speed, reduce pilot pressure, expand control mode and increase the well head safe control system two position three-way valve of application area.
Background technique
Specific (special) requirements due to rock gas well head safety, well head safe control system requires that all elements are multiple functional, superior performance, safe, long service life, and two position three-way valve also just requires to have the movement speed that is exceedingly fast, lower pilot pressure, good sealing, longer working life, can adapt to the pneumatic or well head safe control system of surging.
The current well head safe control system of China is taked the sealing means of metal to metal with two position three-way valve, spool does not arrange the annular groove that increases valve core head and increase spool and valve body gap, the factors such as complex structure cause speed of response slow, sealing is poor, pilot pressure is high, the problems such as working life is short, exist control mode single simultaneously, adaptive system is single, be that the two position three-way valve of prior art when used in well head safe control system, the two position three-way valve of same structure cannot be realized and often opening and normally closed two kinds of control modes, also cannot be applied to pneumatic and well head safe control system that surge simultaneously.
In sum, the rock gas well head of prior art is slow by two position three-way valve speed of response, sealing is poor, pilot pressure is high, working life is short, and the two position three-way valve control mode of prior art is single, poor for applicability.
Summary of the invention
The purpose of this utility model be to provide a kind of simple in structure, improve movement speed, reduce pilot pressure, expand control mode and increase the well head safe control system two position three-way valve of application area.
For realizing the technological scheme that the utility model above-mentioned purpose adopts, be: a kind of well head safe control system two position three-way valve, comprise valve body, at the inner chamber of valve body, spool is installed, left end is provided with valve gap; The left section of cover at spool has spring, the left section of cover at spool has spring, spool is positioned at the left end of valve body under the effect of spring spring force, is provided with medium runner hole A, medium runner hole B and medium runner hole C on valve body, is provided with medium runner hole D on valve gap; Wherein:
Described medium runner hole A and medium runner hole B are positioned at the same sidewall on valve body, and medium runner hole C is positioned on the sidewall relative with medium runner hole B sidewall of living in medium runner hole A;
The inner chamber of described valve body is through hole, this through hole is by spool shutoff, at the inner chamber left end of valve body, is provided with an increase valve pocket, increases valve core head and is arranged in this increase valve pocket, described spring left end is tight against and is increasing on valve core head, and spring right-hand member is tight against and is increasing on the internal chamber wall of valve pocket.
Due to said structure, spool of the present utility model one end adopts and increases valve core head, greatly reduces the pilot pressure of whole two position three-way valve; By medium, promote spool moves in valve pocket, realize medium runner hole A and medium runner hole B as the exchange of entrance pressure mouth, also just make this two position three-way valve have normally closed and often open two kinds of control modes, and this is simple in structure described in model utility, improved movement speed, expanded control mode and increased application area.
Accompanying drawing explanation
The indefiniteness embodiment that the utility model can provide by accompanying drawing further illustrates.
Fig. 1 is structural representation of the present utility model.
In figure: 1, valve body; 2, spool; 3, spring; 4, valve gap; 5, medium runner hole A; 6, medium runner hole B; 7, medium runner hole C; 8, medium runner hole D; 9, tapped hole; 10, annular groove E; 11, increase valve pocket; 12, increase valve core head.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
Referring to accompanying drawing 1, a kind of well head safe control system two position three-way valve, comprises valve body 1, at the inner chamber of valve body 1, spool 2 is installed, and left end is provided with valve gap 4; The left section of cover at spool 2 has spring 3, and spool 2 is positioned at the left end of valve body 1 under the effect of spring 3 spring forces, is provided with medium runner hole A5, medium runner hole B6 and medium runner hole C7 on valve body 1, is provided with medium runner hole D8 on valve gap 4; Wherein:
Described medium runner hole A5 and medium runner hole B6 are positioned at the same sidewall on valve body 1, and medium runner hole C7 is positioned on the sidewall relative with medium runner hole B6 sidewall of living in medium runner hole A5;
The inner chamber of described valve body 1 is through hole, this through hole is by spool 2 shutoff, inner chamber left end at valve body 1 is provided with an increase valve pocket 11, increasing valve core head 12 is arranged in this increase valve pocket 11, described spring 3 left ends are tight against and are increasing on valve core head 12, and spring 3 right-hand members are tight against and are increasing on the internal chamber wall of valve pocket 11.
Particularly:
Said structure is chosen medium runner hole A5 as pressure inlets, medium runner hole C7 is during as pressure export, the working method of this pilot valve is for often opening two position three-way valve, often open two position three-way valve: when reaching after cracking pressure of pilot pressure entrance (being medium runner hole D8), pilot pressure moves right promotion spool, spool will be blocked the pressure of import (medium runner hole A5) immediately, simultaneously by the medium runner hole B6 pressure of medium runner hole C7 of releasing, thereby make immediately well head safe control system make closing motion.
Said structure is chosen medium runner hole B6 as pilot pressure import, medium runner hole C7 is during as pressure export, the working method of this pilot valve is normally closed two position three-way valve, normally closed two position three-way valve: after the cracking pressure of pilot pressure entrance (being medium runner hole D8) discharges, spool by under the effect of spring force to left movement, spool will be blocked the pressure of import (medium runner hole B6) immediately, simultaneously by the medium runner hole A5 pressure of medium runner hole C7 of releasing, thereby make immediately well head safe control system make closing motion.
Install when using, above-described embodiment, preferably: between described valve body 1 and valve gap 4, be threaded, and by O RunddichtringO, seal between this valve body 1 and valve gap 4.
When using and the installation of well head safe control system equipment, above-described embodiment, preferably: the right-hand member of described valve body 1 is provided with the tapped hole 9 being connected with well head safe control system equipment.
For improving rate-of flow, above-described embodiment, preferably: described spool 2 outer walls are provided with at least one annular groove E10 that increases gap between spool 2 and valve body 1.
For improving the sealing of whole two position three-way valve and the stability in when work, and the working life that extends whole pilot valve, above-described embodiment, preferably: between the place, annular groove E10 both sides of described spool 2 and valve body 1, by O RunddichtringO, seal.
For improving the application area of whole two position three-way valve, spool left end adopts YX seal ring and the sealing of valve gap endoporus, can use the pneumatic and well head safe control system of surging.
In above-mentioned all embodiments in concrete using process:
1. according to well head safe control system, when moving, require each parts to have good sealing, the utility model adopts O RunddichtringO to carry out radial seal, has reliable sealability under the medium of liquid or gas, has extremely strong working life simultaneously.
2.O type circle is selected fluorine rubber material, it is good elastomer, can guarantee to work under rugged environment, can guarantee that two position three-way valve has enough time of movement simultaneously, simultaneously the dirt of O type circle position in can depositing system pressure medium goes to affect the sealing between spool and O type circle, has good stability.
3. spool left end adopts the sealing of YX seal ring, and applicable and the pneumatic and well head safe control system of surging, has improved application area.
4. spool outer wall is provided with the annular groove that at least one increases gap between spool and valve body 1, has improved greatly rate-of flow, has accelerated movement speed.
5. this valve arrangement is simple, and integrated degree is higher, has reduced the waste of material, the loaded down with trivial details degree of simplification processing.
6. valve body arranges two pressure inlets, makes this pilot valve have Chang Kai and normally closed two kinds of working methods, and control mode is more various.
7. this pilot valve adopts stainless steel material manufacture, has strengthened resistance to compression, antifatigue, resistance to wears, anti-corrosion capacity, has further increased the working life of two position three-way valve.
8. spool one end adopts and increases spool, greatly reduces the pilot pressure of this valve.
Obviously, all embodiments of foregoing description are a part of embodiments of the present utility model, rather than whole embodiments.Based on embodiment of the present utility model, those of ordinary skills are not making all other embodiments that obtain under creative work prerequisite, all belong to the category of the utility model protection.
In sum, this structure has improved movement speed and sealing, has reduced pilot pressure low, simultaneously simple in structure, there are Chang Kai and normally closed two kinds of control modes, can adapt to the pneumatic and well head safe control system of surging.

Claims (5)

1. a well head safe control system two position three-way valve, comprises valve body (1), at the inner chamber of valve body (1), spool (2) is installed, and left end is provided with valve gap (4); The left section of cover at spool (2) has spring (3), spool (2) is positioned at the left end of valve body (1) under the effect of spring (3) spring force, on valve body (1), be provided with medium runner hole A(5), medium runner hole B(6) and medium runner hole C(7), on valve gap (4), be provided with medium runner hole D(8); It is characterized in that:
Described medium runner hole A(5) and medium runner hole B(6) be positioned at the same sidewall on valve body (1), medium runner hole C(7) be positioned at and medium runner hole A(5) and medium runner hole B(6) on the relative sidewall of sidewall of living in;
The inner chamber of described valve body (1) is through hole, this through hole is by spool (2) shutoff, inner chamber left end at valve body (1) is provided with an increase valve pocket (11), increasing valve core head (12) is arranged in this increase valve pocket (11), described spring (3) left end is tight against and is increasing valve core head (12) above, and spring (3) right-hand member is tight against and is increasing on the internal chamber wall of valve pocket (11).
2. well head safe control system two position three-way valve according to claim 1, is characterized in that: between described valve body (1) and valve gap (4), be threaded, and by O RunddichtringO, seal between this valve body (1) and valve gap (4).
3. well head safe control system two position three-way valve according to claim 1 and 2, is characterized in that: the right-hand member of described valve body (1) is provided with the tapped hole (9) being connected with well head safe control system equipment.
4. well head safe control system two position three-way valve according to claim 1, is characterized in that: described spool (2) outer wall is provided with at least one annular groove E(10 that increases gap between spool (2) and valve body (1)).
5. well head safe control system two position three-way valve according to claim 4, is characterized in that: the annular groove E(10 of described spool (2)) between place, both sides and valve body (1), by O RunddichtringO, seal.
CN201320514760.5U 2013-08-22 2013-08-22 Two-position three-way valve for wellhead safety control system Expired - Fee Related CN203516832U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320514760.5U CN203516832U (en) 2013-08-22 2013-08-22 Two-position three-way valve for wellhead safety control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320514760.5U CN203516832U (en) 2013-08-22 2013-08-22 Two-position three-way valve for wellhead safety control system

Publications (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107061402A (en) * 2017-05-26 2017-08-18 湖南凯恩利液压机械制造有限公司 A kind of hydraulic control load holding valve, hydraulic system and plant equipment
CN107091338A (en) * 2017-05-26 2017-08-25 湖南凯恩利液压机械制造有限公司 A kind of shuttle valve, hydraulic system and plant equipment
CN107883030A (en) * 2018-01-09 2018-04-06 武光玉 A kind of normally closed hydraulic control pressure-reducing valve of plug-in threeway
CN108035927A (en) * 2017-12-31 2018-05-15 无锡英特帕普威孚液压有限责任公司 A kind of hydraulic inverting valve spindle
CN108884947A (en) * 2016-03-28 2018-11-23 帕克-汉尼芬公司 Ratio sequence valve with pressure amplifying device
CN112392789A (en) * 2020-10-26 2021-02-23 平高集团有限公司 Hydraulic control valve, hydraulic operating mechanism using same and circuit breaker
CN114543389A (en) * 2022-02-23 2022-05-27 陈珂 Waste heat utilization system and method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108884947A (en) * 2016-03-28 2018-11-23 帕克-汉尼芬公司 Ratio sequence valve with pressure amplifying device
CN107061402A (en) * 2017-05-26 2017-08-18 湖南凯恩利液压机械制造有限公司 A kind of hydraulic control load holding valve, hydraulic system and plant equipment
CN107091338A (en) * 2017-05-26 2017-08-25 湖南凯恩利液压机械制造有限公司 A kind of shuttle valve, hydraulic system and plant equipment
CN108035927A (en) * 2017-12-31 2018-05-15 无锡英特帕普威孚液压有限责任公司 A kind of hydraulic inverting valve spindle
CN107883030A (en) * 2018-01-09 2018-04-06 武光玉 A kind of normally closed hydraulic control pressure-reducing valve of plug-in threeway
CN112392789A (en) * 2020-10-26 2021-02-23 平高集团有限公司 Hydraulic control valve, hydraulic operating mechanism using same and circuit breaker
CN112392789B (en) * 2020-10-26 2022-01-28 平高集团有限公司 Hydraulic control valve, hydraulic operating mechanism using same and circuit breaker
CN114543389A (en) * 2022-02-23 2022-05-27 陈珂 Waste heat utilization system and method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140402

Termination date: 20160822

CF01 Termination of patent right due to non-payment of annual fee