CN104455534A - Variable-temperature sealing self-compensating orbit ball valve - Google Patents
Variable-temperature sealing self-compensating orbit ball valve Download PDFInfo
- Publication number
- CN104455534A CN104455534A CN201410730702.5A CN201410730702A CN104455534A CN 104455534 A CN104455534 A CN 104455534A CN 201410730702 A CN201410730702 A CN 201410730702A CN 104455534 A CN104455534 A CN 104455534A
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- China
- Prior art keywords
- valve rod
- rod assembly
- sleeve
- elastic component
- upper valve
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a variable-temperature sealing self-compensating orbit ball valve. The variable-temperature sealing self-compensating orbit ball valve comprises a valve body (1), a valve core (2), a long-neck bonnet (4), a valve rod (5) and a hand wheel (11), and is characterized in that an elastic compensating structure is arranged on the valve rod (5), and the valve rod (5) comprises an upper valve rod assembly (5-2), an elastic component (7), a sleeve (6) and a lower valve rod assembly (5-1); the upper valve rod assembly (5-2) is formed by fixedly connecting a fixed block (5-2-2) and an upper valve rod (5-2-1), and the lower valve rod assembly (5-1) is formed by fixedly connecting a sliding block (5-1-2) and a lower valve rod (5-1-1); the lower valve rod assembly (5-1) is connected with the sleeve (6) in a matched manner through the sliding block (5-1-2), and the upper valve rod assembly (5-2) is fixedly connected with the sleeve (6); the elastic component (7) is mounted in the sleeve (6) between the upper valve rod assembly (5-2) and the lower valve rod assembly (5-1), and the elastic component (7) can be compressed or released through the relative shift of the upper valve rod assembly (5-2) and the lower valve rod assembly (5-1). The variable-temperature sealing self-compensating orbit ball valve can effectively compensate insufficient seal specific pressure caused by a temperature difference in real time, generates no friction during opening and closing, has small opening and closing torque and has high seal reliability.
Description
Technical field
The invention belongs to valve technology field, particularly a kind of under alternating temperature operating mode and have sealing self-compensating function orbit ball valve.
Background technique
The contact that orbit ball valve utilizes cam mechanism principle to realize core print seat be separated, seal form is simple and reliable, avoid in manufacture, install and use in process and cause error accumulation because of complicated sealing configuration, particularly under alternating temperature state, the error caused because the distortion between each parts of complicated sealing configuration is inconsistent is amplified.Therefore, in the work condition environment that temperature variation is larger, orbit ball valve replaces ball valve, stop valve just gradually.But nonetheless, when working temperature changes, sealing surface STRESS VARIATION is inevitable, we usually by rotating handwheel with compensation sealing more.This method can not meet the demand of modern industry intelligentized control method on the one hand, on the other hand can not the impact that brings of the accurate compensation temperature difference in real time by rotation handwheel.
Summary of the invention
In order to solve above-mentioned technical deficiency, the invention provides a kind of alternating temperature lower seal self compensation orbit ball valve structure.This structure can auto-compensation valve under alternating temperature situation due to seal leakage that temperature variation causes.There is good seal performance, the feature that sealing reliability is high.
The technical solution adopted for the present invention to solve the technical problems is:
Alternating temperature lower seal self compensation orbit ball valve of the present invention, comprises valve body, spool, long-neck valve gap, valve rod and handwheel.Valve rod is provided with an elastic compensating structure, comprises upper valve rod assembly, elastic component, sleeve and lower valve rod assembly.Upper valve rod assembly to be fixedly connected with upper valve rod by fixed block and to form, and lower valve rod assembly to be fixedly connected with lower valve rod by slide blocks to form.Lower valve rod assembly is connected by slide blocks and sleeve, and upper valve rod assembly is fixedly connected with sleeve.Elastic component is arranged in the sleeve between upper valve rod assembly and lower valve rod assembly, is moved can compress or loosen elastic component by the relative position of upper valve rod assembly and lower valve rod assembly.
In such scheme, lower valve rod assembly can only move can not rotate relative to upper valve rod assembly in sleeve.
In such scheme, the link between upper lower valve rod: fixed block, sleeve, slide blocks can be cylindrical, and are designed with symmetrical boss on slide blocks excircle, sleeve inner circumference is processed with the groove corresponding with slide blocks quantity, position.Also can be other shape and structures, as cuboid shape.
In such scheme, elastic component can be spring, disc spring etc.
In such scheme, sealing compensation mechanism is in beyond valve alternating temperature lower area, and sealing compensation structure is not by medium temperature variable effect, and structural reliability is high.
During throttle down, rotate handwheel, orbit ball valve spool rotates 90 ° under the spiral chute section of guiding groove guides, and reaches pre-shutdown state.Be rotated further handwheel, the straight trough section of guiding groove guides the downward action of valve rod, promotes spool to valve seat direction rolling certain distance to form contact with valve seat and seal.While the downward action of valve rod promotes spool, the relative lower valve rod assembly of upper valve rod assembly moves downward, to elastic component compress energy storage.When seal pressure between spool and valve seat reduces because of impact under alternating temperature, the elastic component in elastic compensating mechanism can promote the downward action of lower valve rod assembly automatically, and then promotes spool rolls forward to increase seal pressure, thus ensure that the reliability of sealing.
When Open valve, rotate handwheel, upper valve rod assembly is under the guiding of the straight trough section of guiding groove, upwards action, first loosen the elastic component in compensation mechanism, then drive the upwards action of lower valve rod assembly, impel spool to lift off a seat to the direction rolling that valve seat is contrary and reach pre-opening state.Be rotated further handwheel, valve rod drives valve core rotation 90 ° under the effect of the spiral chute section of guiding groove, complete Open valve.
In the whole process of valve opening or closedown, contactless friction all the time between spool and valve seat, opens and closes moment little.And when valve closing, when seal pressure reduces because of temperature variation, elastic component can automatic compensation sealing specific pressure, and sealing reliability is leaned on.
Beneficial effect of the present invention is as described below.
1 orbit ball valve is used for alternating temperature operating mode under, avoid the various shortcomings and deficiencies of ball valve and stop valve under alternating temperature.
2 by elastic compensating structure, makes valve can the problem of seal pressure deficiency that causes due to temperature variation of real-Time Compensation, ensure that the reliability of sealing.
3 adopt alternating temperature lower seal self compensation orbit ball valve of the present invention, and it is by sealing compensation organization establishes beyond varied temperature regime, and making can be more simple and reliable to the design of the sealing configuration of spool.
Summary of the invention
Fig. 1 alternating temperature lower seal self compensation orbit ball valve schematic diagram.
Fig. 2 seals self-compensating structure schematic diagram.
Fig. 3 slide block block schematic diagram.
Fig. 4 sleeve schematic diagram.
Fig. 5 guiding groove schematic diagram.
In figure: 1 valve body, 2 spools, 3 valve seats, 4 long-neck valve gaps, 5 valve rods, 5-1 lower valve rod assembly, 5-1-1 lower valve rod, 5-1-2 slide blocks, 5-2 upper valve rod assembly, 5-2-1 upper valve rod, 5-2-2 fixed block, 5-2-2a boss, 6 sleeves, 6-1 groove, 7 elastic components, 8 guiding grooves, 8-1 spiral chute section, 8-2 straight trough section, 9 guide fingers, 10 Stem Muts, 11 handwheels.
Embodiment
In order to better explain explanation the present invention, carry out concrete elaboration below in conjunction with drawings and Examples.
Alternating temperature lower seal self compensation orbit ball valve of the present invention, comprises valve body (1), spool (2), long-neck valve gap (4), valve rod (5) and handwheel (11).Valve rod (5) is provided with an elastic compensating structure, comprises upper valve rod assembly (5-2), elastic component (7), sleeve (6) and lower valve rod assembly (5-1).Upper valve rod assembly (5-2) to be fixedly connected with upper valve rod (5-2-1) by fixed block (5-2-2) and to form, and lower valve rod assembly (5-1) to be fixedly connected with lower valve rod (5-1-1) by slide blocks (5-1-2) to form.Slide blocks (5-1-2) excircle is designed with symmetrical boss (5-1-2a), sleeve (6) inner circumference is processed with the groove (6-1) corresponding with slide blocks (5-1-2) quantity, position.Lower valve rod assembly (5-1) is connected by slide blocks (5-1-2) and sleeve (6), and upper valve rod assembly (5-2) is fixedly connected with sleeve (6).Lower valve rod assembly (5-1) can only move can not rotate relative to upper valve rod assembly (5-2) in sleeve (6).Elastic component (7) is arranged in the sleeve (6) between upper valve rod assembly (5-2) and lower valve rod assembly (5-1), is moved can compress or loosen elastic component (7) by the relative position of upper valve rod assembly (5-2) and lower valve rod assembly (5-1).
During throttle down, rotate handwheel (11), orbit ball valve spool (2) rotation 90 ° under the spiral chute section (8-1) of guiding groove (8) guides, reaches pre-shutdown state.Be rotated further handwheel (11), the straight trough section (8-2) of guiding groove (8) guides valve rod (5) action downwards, promotes spool (2) to valve seat (3) direction rolling certain distance to form contact with valve seat (3) and seal.While valve rod (3) action downwards promotes spool (2), upper valve rod assembly (5-2) relatively lower valve rod assembly (5-1) moves downward, to elastic component (7) compress energy storage.Seal pressure between spool (2) and valve seat (3) because of alternating temperature under affect and reduce time, elastic component (7) in elastic compensating mechanism can promote lower valve rod assembly (5-1) action downwards automatically, and then promote spool (2) rolls forward to increase seal pressure, thus ensure that the reliability of sealing.
When Open valve, rotate handwheel (11), upper valve rod assembly (5-2) is under the guiding of the straight trough section (8-2) of guiding groove (8), upwards action, first the elastic component (7) in compensation mechanism is loosened, then drive lower valve rod assembly (5-1) upwards action, impel spool (2) to roll to the direction that valve seat (3) is contrary to lift off a seat (3) to reach pre-opening state.Be rotated further handwheel (11), valve rod (5) is with movable valve plug (2) to rotate 90 °, complete Open valve under the effect of the spiral chute section (8-1) of guiding groove (8).
In the whole process of valve opening or closedown, contactless friction all the time between spool (2) and valve seat (3), opens and closes moment little.And when valve closing, when seal pressure reduces because of temperature variation, elastic component (7) can automatic compensation sealing specific pressure, and sealing reliability is leaned on.
Finally it should be noted that, this embodiment only illustrates the present invention and unrestricted using scope of the present invention for better explaining.It will be understood by those of skill in the art that and technological scheme of the present invention is modified or equivalent replacement, and do not depart from the purpose and scope of the invention, all should be encompassed in the middle of protection scope of the present invention.
Claims (3)
1. alternating temperature lower seal self compensation orbit ball valve, comprise valve body (1), spool (2), long-neck valve gap (4), valve rod (5) and handwheel (11), it is characterized in that: on valve rod (5), be provided with an elastic compensating structure, comprise upper valve rod assembly (5-2), elastic component (7), sleeve (6) and lower valve rod assembly (5-1); Upper valve rod assembly (5-2) to be fixedly connected with upper valve rod (5-2-1) by fixed block (5-2-2) and to form, and lower valve rod assembly (5-1) to be fixedly connected with lower valve rod (5-1-1) by slide blocks (5-1-2) to form; Lower valve rod assembly (5-1) is connected by slide blocks (5-1-2) and sleeve (6), and upper valve rod assembly (5-2) is fixedly connected with sleeve (6); Elastic component (7) is arranged in the sleeve (6) between upper valve rod assembly (5-2) and lower valve rod assembly (5-2), is moved can compress or loosen elastic component (7) by the relative position of upper valve rod assembly (5-2) and lower valve rod assembly (5-1).
2. alternating temperature lower seal self compensation orbit ball valve according to claim 1, it is characterized in that lower valve rod assembly (5-1) is coordinated with sleeve (6) by slide blocks (5-1-2), lower valve rod assembly (5-1) can only move can not rotate relative to upper valve rod assembly (5-2) in sleeve (6).
3. alternating temperature lower seal self compensation orbit ball valve according to claim 1, is characterized in that sealing compensation mechanism is in beyond valve varied temperature regime, and sealing compensation structure is by medium influence under alternating temperature, and structural reliability is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730702.5A CN104455534B (en) | 2014-12-05 | 2014-12-05 | Alternating temperature lower seal self compensation orbit ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410730702.5A CN104455534B (en) | 2014-12-05 | 2014-12-05 | Alternating temperature lower seal self compensation orbit ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455534A true CN104455534A (en) | 2015-03-25 |
| CN104455534B CN104455534B (en) | 2016-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410730702.5A Expired - Fee Related CN104455534B (en) | 2014-12-05 | 2014-12-05 | Alternating temperature lower seal self compensation orbit ball valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN104455534B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614661A (en) * | 1979-07-10 | 1981-02-12 | Fuji Kinzoku Kosaku Kk | Ball valve |
| US4614330A (en) * | 1985-09-09 | 1986-09-30 | Empresas Lanzagorta, S.A. De C.V. | Non-locking tapered plug valve |
| JPH0533873A (en) * | 1991-07-31 | 1993-02-09 | Sekisui Chem Co Ltd | Ball valve |
| US5407176A (en) * | 1993-08-12 | 1995-04-18 | Nevrekar; Venkatesh R. | Back-seating of rotary valve stem |
| CN2606827Y (en) * | 2003-03-24 | 2004-03-17 | 孟永康 | High temperature high pressure compensation type sealing ball valve |
| CN201621317U (en) * | 2010-01-19 | 2010-11-03 | 广东明珠流体机械有限公司 | Top assembly type integral inclined surface metal sealing ball valve |
| CN102261487A (en) * | 2011-05-07 | 2011-11-30 | 浙江万龙机械有限公司 | Valve rod lifting track ball valve |
| CN204403430U (en) * | 2014-12-05 | 2015-06-17 | 四川大学 | Alternating temperature lower seal self compensation orbit ball valve |
-
2014
- 2014-12-05 CN CN201410730702.5A patent/CN104455534B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5614661A (en) * | 1979-07-10 | 1981-02-12 | Fuji Kinzoku Kosaku Kk | Ball valve |
| US4614330A (en) * | 1985-09-09 | 1986-09-30 | Empresas Lanzagorta, S.A. De C.V. | Non-locking tapered plug valve |
| JPH0533873A (en) * | 1991-07-31 | 1993-02-09 | Sekisui Chem Co Ltd | Ball valve |
| US5407176A (en) * | 1993-08-12 | 1995-04-18 | Nevrekar; Venkatesh R. | Back-seating of rotary valve stem |
| CN2606827Y (en) * | 2003-03-24 | 2004-03-17 | 孟永康 | High temperature high pressure compensation type sealing ball valve |
| CN201621317U (en) * | 2010-01-19 | 2010-11-03 | 广东明珠流体机械有限公司 | Top assembly type integral inclined surface metal sealing ball valve |
| CN102261487A (en) * | 2011-05-07 | 2011-11-30 | 浙江万龙机械有限公司 | Valve rod lifting track ball valve |
| CN204403430U (en) * | 2014-12-05 | 2015-06-17 | 四川大学 | Alternating temperature lower seal self compensation orbit ball valve |
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| Publication number | Publication date |
|---|---|
| CN104455534B (en) | 2016-09-14 |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20160914 Termination date: 20181205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |