CN104089027A - Throttling valve with linear flow characteristic and large through-flow (Cv value) - Google Patents
Throttling valve with linear flow characteristic and large through-flow (Cv value) Download PDFInfo
- Publication number
- CN104089027A CN104089027A CN201410311318.1A CN201410311318A CN104089027A CN 104089027 A CN104089027 A CN 104089027A CN 201410311318 A CN201410311318 A CN 201410311318A CN 104089027 A CN104089027 A CN 104089027A
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- Prior art keywords
- valve
- hole
- spool
- value
- flow characteristic
- 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.)
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to the technical field of valves, in particular to a throttling valve with a linear flow characteristic and a large through-flow (Cv value). The throttling valve includes a throttling valve body. The throttling valve body includes a valve body provided with a hole B. A valve base and a valve element sleeve are arranged in the hole B. An inner hole is formed in the valve base and is a conical hole. A valve rod is arranged in the valve element sleeve and sleeved with a sealing gland and sealing packing in sequence. The right side of the valve element sleeve is provided with a hole A, and one end of the hole A is communicated with a stepped hole in the upper end of the valve element sleeve. A valve element is arranged at one end of the valve rod. The outer surface of the valve element includes a cylindrical surface. The two ends of the cylindrical surface are respectively and correspondingly provided with a combined conical surface. Each combined conical surface is composed of a conical surface A and a conical surface B, and the conical surfaces A and the conical surfaces B are different in angle. The outer surface of the valve element is formed by combining the cylindrical surface and the combined conical surfaces at the two ends of the cylindrical surface. The throttling valve is simple and reasonable in structure and capable of being continuously and linearly adjusted.
Description
Technical field
The present invention relates to valve technology field, be specifically related to a kind of throttle valve with linear flow characteristic and large through-current capability (Cv value).
Background technique
In the various high-pressure liquid control apparatuss in oil field or device, throttle valve is the major control parts of pressure, flow, by regulating the aperture of throttle valve, reaches the object of controlling hydrodynamic pressure and flow.Along with pilot pressure drilling technology is paid attention to day by day, become one of drilling well hot spot technology at home and abroad.In pilot pressure drilling technology, particularly in meticulous controlled pressure drilling (MPD) technology, the throttle valve of requirement pilot pressure should be by computer control, and can be all the time dynamically, continuously well head pressure be controlled at setting very among a small circle in, this just has higher requirement to the Flow characteristics of throttle valve.The Flow characteristics of throttle valve must be linear, and has large through-current capability (Cv value), so that in the time that trace regulates throttle valve opening, pressure also can produce trace thereupon to be changed, and realizes the reliable of computer and effectively controls.At present, the conventional throttle valve of domestic drilling well mainly contains tubular, aciculiform, wedge shape and orifice-plate type, but their Flow characteristics is curvilinerar figure, and it is non-linear, can not meet the requirement of meticulous controlled pressure drilling (MPD), in addition, the valve seat outlet of above-mentioned four kinds of throttle valve very easily produces side blow, also brings very large potential safety hazard to manufacturing operation.
Summary of the invention
The object of the invention is to defect and deficiency for prior art, provide a kind of simple in structure, the throttle valve with linear flow characteristic and large through-current capability (Cv value) reasonable in design, easy to use, it does not possess linear flow characteristic and large through-current capability for existing throttle valve, cannot meet the requirement of meticulous controlled pressure drilling (MPD), and provide a kind of simple in structure, reasonable in design, there is linear Flow characteristics and large through-current capability (Cv value), can meet the throttle valve that requires of meticulous controlled pressure drilling (MPD).
The throttle valve with linear flow characteristic and large through-current capability (Cv value) of the present invention, it comprises throttle body, and described throttle body comprises a valve body, and a valve seat and a valve core housing are set in this valve body, described valve seat arranges an endoporus, and this endoporus is a conical bore; In described valve core housing, be provided with a valve rod, be arranged with successively a sealing gland and sealed packing on this valve rod, a hole A is set on this valve core housing right side, A one end, this hole communicates with valve core housing upper end step hole; Described valve rod one end arranges a spool, this valve core outer surface comprises a cylndrical surface, these two ends, cylndrical surface respectively correspondence are provided with combination conical surface, this combination conical surface is made up of two different conical surface A and conical surface B of angle, and valve core outer surface is combined by the combination conical surface at He Qi two ends, cylndrical surface; Spool, under the traction of valve rod, moves along the axis of valve seat, at the cooperation position different from valve seat, forms different flow areas.
Further, described valve seat and spool all adopt cemented carbide to make.
Further, a valve seat, valve core housing and hole B are set in described valve body.
Further, described valve body is externally connected with suction flange pipe nipple and outlet(discharge) flange pipe nipple, is provided with taper hole wearing bush and straight hole wearing bush in described outlet(discharge) flange pipe nipple.
Further, described spool, its end face is uniformly distributed 5 through holes, and inside is provided with thread bush, and entirety is symmetric design longitudinally.
Further, described valve seat endoporus is to combine with a conical bore and a straight hole section, and integral shaft is to symmetric design.
Further, on described valve body, be provided with a connection union.
Adopt after said structure, beneficial effect of the present invention is: the throttle valve with linear flow characteristic and large through-current capability (Cv value) of the present invention, it at work, spool, under the traction of valve rod, moves along the axis of valve seat, at the cooperation position different from valve seat, form different flow areas, spool, by closing in the continuous moving process of maximum opening, presents, and is continuous, linear micrometeor characteristic in the time of little aperture; After in larger aperture process, have continuously, the Flow characteristics of linear, large through-current capability.It is simple and reasonable for structure, can realize continuous, the linearly adjust of throttle valve.
Brief description of the drawings
Accompanying drawing described herein is to be used to provide a further understanding of the present invention, forms the application's a part, but do not form inappropriate limitation of the present invention, in the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is valve core structure schematic diagram of the present invention;
Fig. 3 is valve seat construction schematic diagram of the present invention;
Fig. 4 is that micrometeor characteristic of the present invention coordinates partial enlarged drawing;
Fig. 5 is that the large Flow characteristics of the present invention coordinates partial enlarged drawing;
Fig. 6 is Flow characteristics figure of the present invention.
Description of reference numerals:
1, outlet(discharge) flange pipe nipple; 2, straight hole wearing bush; 3, taper hole wearing bush; 4, valve seat; 5, spool; 6, valve core housing; 7, valve body; 8, sealed packing; 9, sealing gland; 10, cylinder component; 11, valve rod; 12, connect union; 13, suction flange pipe nipple; 14, hole A; 15, hole B.
Embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, illustrative examples wherein and explanation are only used for explaining the present invention, but not as a limitation of the invention.
As shown in Fig. 1-Fig. 6, the throttle valve with linear flow characteristic and large through-current capability (Cv value) described in this embodiment, it comprises throttle body, described throttle body comprises a valve body (7), one valve seat (4) and a valve core housing (6) are set in this valve body (7), described valve seat (4) arranges an endoporus, and this endoporus is a conical bore; In described valve core housing (6), be provided with a valve rod (11), on this valve rod (11), be arranged with successively a sealing gland (9) and sealed packing (8), this valve core housing (6) arranges a hole A(14 on right side), this hole A(14) one end communicates with valve core housing upper end step hole; Described valve rod (11) one end arranges a spool (5), this spool (5) outer surface comprises a cylndrical surface, these two ends, cylndrical surface respectively correspondence are provided with combination conical surface, this combination conical surface is by two conical surface A(5-2 that angle is different) and conical surface B(5-3) form, spool (5) outer surface is combined by the combination conical surface at He Qi two ends, cylndrical surface; Spool, under the traction of valve rod, moves along the axis of valve seat, at the cooperation position different from valve seat, forms different flow areas.
Described valve seat (4) and spool (5) all adopt cemented carbide to make.
One valve seat (4), valve core housing (6) and hole B(15 are set) in described valve body (7).
Described valve body (7) is externally connected with suction flange pipe nipple (13) and outlet(discharge) flange pipe nipple (1), is provided with taper hole wearing bush (3) and straight hole wearing bush (2) in described outlet(discharge) flange pipe nipple (1).
Described spool (5), its end face is uniformly distributed 5 through holes, and inside is provided with thread bush (5-1), and entirety is symmetric design longitudinally.
Described valve seat (4) endoporus is to combine with a conical bore and a straight hole section, and integral shaft is to symmetric design.
On described valve body (7), be provided with a connection union 12.
Working principle of the present invention is as follows:
Valve inner is provided with valve seat, valve core housing is fixed on valve body by connecting union, the small end of valve core housing projects forwardly to and blocks import stomidium completely, to ensure that the fluid that enters valve seat is as central column, reach the fluid that flows out valve seat along streamlined flow, valve body outside is connected with outlet(discharge) flange pipe nipple with suction flange pipe nipple respectively, and suction flange pipe nipple and outlet(discharge) flange pipe nipple can be according to outside Connecting format flexible transformation in the situation that keeping main body constant.Spool is installed in valve core housing, axis along valve seat under the traction of valve rod moves, at the cooperation position different from valve seat, form different flow areas, spool is by closing in the continuous moving process of maximum opening, first the conical surface that is spool coordinates with valve seat straight hole section, and due to the conical surface complementation of two different amount of spool, what its passage section presented is continuous, linear micrometeor characteristic; In the time that the end of spool moves to the internal conical surface of valve seat, what its passage section presented is the Flow characteristics with continuous, linear, large through-current capability.Hole B on hole A and valve body on valve core housing can ensure after sealed packing lost efficacy, and the pressure in valve pocket can be by outside hole A and hole B expulsion valve, avoids valve pocket pressure-acting on main piston and causes large accident.The taper hole wearing bush and the straight hole wearing bush that are loaded in outlet(discharge) flange pipe nipple can protect outlet(discharge) flange pipe nipple to avoid erosion effectively, once when occurring side blow fluid, thereby taper hole wearing bush is owing to having increased washing away reference angle and can alleviating washing away of fluid of fluid.Spool and valve seat adopt symmetric design structure, once one end serious wear can turn around to use, to reduce cost.
The present invention is mainly used in pressure, flow-control equipment or the device of the various high-pressure liquids in oil field.
Throttle valve of the present invention is to adopt to have the spool of two conical surfaces and match with the valve seat of a straight cylindrical surfaces and an internal conical surface, all can obtain continuous, linear Flow characteristics under micrometeor and heavy traffic condition.
The throttle valve with linear flow characteristic and large through-current capability (Cv value) of the present invention, it at work, spool is under the traction of valve rod, axis along valve seat moves, at the cooperation position different from valve seat, form different flow areas, spool is by closing in the continuous moving process of maximum opening, present, be continuous, linear micrometeor characteristic in the time of little aperture; After in larger aperture process, have continuously, the Flow characteristics of linear, large through-current capability.It is simple and reasonable for structure, can realize continuous, the linearly adjust of throttle valve.
The above is only preferred embodiments of the present invention, and the equivalence of doing according to structure, feature and principle described in patent claim of the present invention therefore all changes or modifies, and is included in patent claim of the present invention.
Claims (7)
1. there is the throttle valve of linear flow characteristic and large through-current capability (Cv value), it is characterized in that: it comprises throttle body, described throttle body comprises a valve body (7), this valve body arranges porose B on (7), one valve seat (4) and a valve core housing (6) are inside set, described valve seat (4) arranges an endoporus, and this endoporus is a conical bore; In described valve core housing (6), be provided with a valve rod (11), on this valve rod (11), be arranged with successively a sealing gland (9) and sealed packing (8), this valve core housing (6) arranges a hole A(14 on right side), this hole A(14) one end communicates with valve core housing (6) upper end step hole; Described valve rod (11) one end arranges a spool (5), this spool (5) outer surface comprises a cylndrical surface, these two ends, cylndrical surface respectively correspondence are provided with combination conical surface, this combination conical surface is by two conical surface A(5-2 that angle is different) and conical surface B(5-3) form, spool (5) outer surface is combined by the combination conical surface at He Qi two ends, cylndrical surface; Spool, under the traction of valve rod, moves along the axis of valve seat, at the cooperation position different from valve seat, forms different flow areas.
2. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, is characterized in that: described valve seat (4) and spool (5) all adopt cemented carbide to make.
3. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, it is characterized in that: described valve core housing arranges porose A(14 on (6)), be inside provided with valve rod (11), sealing gland (6), sealed packing (8); Described valve body arranges porose B on (7), and a valve seat (4), valve core housing (6) are inside set.
4. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, it is characterized in that: described valve body (7) is externally connected with suction flange pipe nipple (13) and outlet(discharge) flange pipe nipple (1), in described outlet(discharge) flange pipe nipple (1), be provided with taper hole wearing bush (3) and straight hole wearing bush (2).
5. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, it is characterized in that: described spool (5), its end face is uniformly distributed 5 through holes, outer surface combines (seeing accompanying drawing 2) by a cylndrical surface with two different conical surfaces of angle, inside is provided with thread bush (5-1), and entirety is symmetric design longitudinally.
6. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, is characterized in that: described valve seat (4) endoporus is to combine with a conical bore and a straight hole section, and integral shaft is to symmetric design.
7. the throttle valve with linear flow characteristic and large through-current capability (Cv value) according to claim 1, is characterized in that: on described valve body (7), be provided with a connection union (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410311318.1A CN104089027A (en) | 2014-07-02 | 2014-07-02 | Throttling valve with linear flow characteristic and large through-flow (Cv value) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410311318.1A CN104089027A (en) | 2014-07-02 | 2014-07-02 | Throttling valve with linear flow characteristic and large through-flow (Cv value) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104089027A true CN104089027A (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410311318.1A Pending CN104089027A (en) | 2014-07-02 | 2014-07-02 | Throttling valve with linear flow characteristic and large through-flow (Cv value) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104089027A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151534A (en) * | 2016-07-30 | 2016-11-23 | 广汉华油钻采设备制造有限公司 | Power throttling arrangement |
| CN108533759A (en) * | 2018-05-24 | 2018-09-14 | 岳波 | A kind of choke valve suitable for Geldart-D particle |
| CN108884946A (en) * | 2017-01-31 | 2018-11-23 | 株式会社富士金 | Flow divider |
| US10197077B2 (en) | 2016-11-10 | 2019-02-05 | Sri Energy, Inc. | Precise choke systems and methods |
| CN111059298A (en) * | 2019-12-09 | 2020-04-24 | 普胜特能源（广汉）服务有限公司 | Novel high-performance throttle valve for oil field drilling and testing |
| US11885198B2 (en) | 2020-06-30 | 2024-01-30 | Sri Energy, Inc. | Choke system with capacity for passage of large debris |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337788A (en) * | 1981-02-02 | 1982-07-06 | Smith International Inc. | High pressure valve |
| CN2124347U (en) * | 1992-03-02 | 1992-12-09 | 邸文斌 | Multifunction high-pressure water filling valve |
| CN101126404A (en) * | 2006-08-16 | 2008-02-20 | 沃尔沃建造设备控股（瑞典）有限公司 | Pressure control valve |
| CN201547246U (en) * | 2009-07-23 | 2010-08-11 | 上海三洲自控仪表有限公司 | Direct pressure type valve seat of control valve with high performance |
| CN202148888U (en) * | 2011-06-24 | 2012-02-22 | 胜利油田胜机石油装备有限公司 | Adjustable step-type throttle valve |
| CN104930762A (en) * | 2014-03-19 | 2015-09-23 | 浙江三花股份有限公司 | Electronic expansion valve |
-
2014
- 2014-07-02 CN CN201410311318.1A patent/CN104089027A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337788A (en) * | 1981-02-02 | 1982-07-06 | Smith International Inc. | High pressure valve |
| CN2124347U (en) * | 1992-03-02 | 1992-12-09 | 邸文斌 | Multifunction high-pressure water filling valve |
| CN101126404A (en) * | 2006-08-16 | 2008-02-20 | 沃尔沃建造设备控股（瑞典）有限公司 | Pressure control valve |
| CN201547246U (en) * | 2009-07-23 | 2010-08-11 | 上海三洲自控仪表有限公司 | Direct pressure type valve seat of control valve with high performance |
| CN202148888U (en) * | 2011-06-24 | 2012-02-22 | 胜利油田胜机石油装备有限公司 | Adjustable step-type throttle valve |
| CN104930762A (en) * | 2014-03-19 | 2015-09-23 | 浙江三花股份有限公司 | Electronic expansion valve |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151534A (en) * | 2016-07-30 | 2016-11-23 | 广汉华油钻采设备制造有限公司 | Power throttling arrangement |
| US10197077B2 (en) | 2016-11-10 | 2019-02-05 | Sri Energy, Inc. | Precise choke systems and methods |
| CN108884946A (en) * | 2017-01-31 | 2018-11-23 | 株式会社富士金 | Flow divider |
| CN108884946B (en) * | 2017-01-31 | 2020-09-25 | 株式会社富士金 | Flow divider |
| CN108533759A (en) * | 2018-05-24 | 2018-09-14 | 岳波 | A kind of choke valve suitable for Geldart-D particle |
| CN111059298A (en) * | 2019-12-09 | 2020-04-24 | 普胜特能源（广汉）服务有限公司 | Novel high-performance throttle valve for oil field drilling and testing |
| US11885198B2 (en) | 2020-06-30 | 2024-01-30 | Sri Energy, Inc. | Choke system with capacity for passage of large debris |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141008 |
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| RJ01 | Rejection of invention patent application after publication |