CN112283384B - Valve rod blowout prevention ball outlet valve - Google Patents
Valve rod blowout prevention ball outlet valve Download PDFInfo
- Publication number
- CN112283384B CN112283384B CN202011170224.9A CN202011170224A CN112283384B CN 112283384 B CN112283384 B CN 112283384B CN 202011170224 A CN202011170224 A CN 202011170224A CN 112283384 B CN112283384 B CN 112283384B
- Authority
- CN
- China
- Prior art keywords
- annular boss
- valve
- valve rod
- groove
- ball
- 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.)
- Active
Links
Images
Classifications
-
- 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
- F16K5/0647—Spindles or actuating means
-
- 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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
-
- 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
- F16K5/0689—Packings between housing and plug
-
- 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
- F16K5/0694—Spindle sealings
-
- 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
Abstract
A valve stem blowout prevention ball valve. The method is characterized in that: an annular boss is formed on the valve rod, a groove matched with the annular boss is formed at the top of the ball body, the lower end of the annular boss extends into the groove and is in sealing fit with the groove, and a medium pressure space is formed at the upper end of the annular boss. The advantages are that: the annular boss of valve rod and the recess at spheroid top between the sealed cooperation, when the medium got into the lumen, it can not get into and provide ascending thrust for the valve rod in the recess, but can act on the up end of annular boss to give the valve rod a decurrent thrust, consequently its fundamentally has eliminated the problem that the valve rod blew out, the valve rod only acts on the effort of annular boss up end at the effort of vertical direction at the medium simultaneously, the pressure effect area is little, consequently the moment of torsion is little, it is lighter to open and close the operation.
Description
Technical Field
The invention relates to a ball valve, in particular to a valve rod anti-ejection ball valve.
Background
The ball valve is a valve whose opening and closing part is a ball body, which is driven by a valve rod and rotates around the axis of the ball valve, and is used for regulating and controlling fluid.
Generally, the pressure in the valve cavity is greater than the ambient pressure, and when the pressure in the valve body cavity is greater than the ambient pressure, the valve rod bears an outward blowing force, and if the valve rod is blown out, the valve can fail and even cause a life safety accident. In order to prevent the valve rod from being blown out, a boss is generally machined at the end of the valve rod in the valve body, and a stuffing box, the valve body or other parts form a limit interference with the boss, so that the valve rod is prevented from being blown out.
As shown in figure 4, the medium in the cavity of the valve body can enter the mounting groove at the top of the ball body and act on the bottom surface of the valve rod, so that the valve rod can be acted by a large thrust, particularly in a high-pressure working environment, the thrust is larger, and simultaneously, because the sectional size of the valve rod is large, the stressed area is large, the torque for driving the valve rod to rotate to open and close the valve is larger, and the operation is more difficult.
Therefore, how to overcome the above technical defects of the conventional ball valve is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In order to overcome the defects of the background art, the invention provides an anti-ejection ball valve with a valve rod.
The technical scheme adopted by the invention is as follows: a valve rod anti-ejection ball valve comprises a valve body, a ball body and a valve rod, wherein the ball body is arranged in a middle cavity of the valve body, and the valve rod extends into the valve body and is connected with the ball body; an annular boss is formed on the valve rod, a groove matched with the annular boss is formed in the top of the ball body, the lower end of the annular boss extends into the groove and is in sealing fit with the groove, and a medium pressure space is formed in the upper end of the annular boss.
An antifriction sealing washer is arranged between the bottom of the annular boss and the groove.
A first sealing ring is arranged between the side wall of the annular boss and the inner wall of the groove.
The upper end of the valve body is provided with a mounting hole for the valve rod to pass through, and the upper end of the annular boss is positioned in the mounting hole; a packing box is arranged on the valve body, and an annular pressure cavity is formed between the packing box and the annular boss; and the valve body is also provided with a medium drainage hole for communicating the annular pressure cavity with the middle cavity.
And a shaft sleeve is arranged between the annular boss and the mounting hole.
Two medium drainage holes are formed in the valve rod and are respectively formed in the left side and the right side of the valve rod.
The lower end of the stuffing box is provided with a convex ring extending into the mounting hole, and a second sealing ring is arranged between the convex ring and the mounting hole.
The beneficial effects of the invention are: scheme more than adopting, sealed cooperation between the annular boss of valve rod and the recess at spheroid top, when the medium got into the lumen, it can not get into and provide ascending thrust for the valve rod in the recess, but can act on the up end of annular boss, thereby give a decurrent thrust of valve rod, consequently its fundamentally has eliminated the problem that the valve rod blew off, the valve rod only acts on the effort of annular boss up end at the effort of vertical direction at the medium simultaneously, the pressure action area is little, consequently, the moment of torsion is little, it is lighter to open and close the operation.
Drawings
Fig. 1 is a schematic structural view of a valve stem blowout prevention ball valve according to an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a point a in fig. 1.
Fig. 3 is an enlarged schematic view of fig. 2 at B.
Fig. 4 shows a valve stem blowout prevention structure in the prior art.
Detailed Description
The embodiments of the invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1-3, a valve rod anti-ejection ball valve comprises a valve body 1, a ball body 2, a valve rod 3, a valve seat and a stuffing box 6.
The valve body 1 comprises a left valve body and a right valve body, a medium circulation channel is formed in the valve body 1, a middle cavity 11 for installing the ball body 2 is formed in the middle of the valve body 1, and an installation hole 12 for the valve rod 3 to penetrate through is formed in the position, corresponding to the upper portion of the middle cavity 11, of the valve body 1.
The ball body 2 is arranged in the middle cavity 11 of the valve body 1 and is in sealing fit with the valve seats on two sides of the ball body, a groove 21 is formed at the upper end of the ball body 2, and a long interface groove is formed on the bottom surface of the groove 21.
The upper end of the valve rod 3 is connected with a hand wheel or an action actuator, the lower end of the valve rod penetrates through the mounting hole 12 and extends into the valve body 1, and the bottom of the valve rod 3 is provided with a long connector matched with the long connector slot and connected with the ball body 2 in a linkage mode.
The stuffing box 6 is arranged at the upper end of the valve body 1 and sleeved outside the valve rod 3, a stuffing groove is formed in the inner ring of the stuffing box 6, sealing stuffing is arranged in the stuffing groove and is compressed through a stuffing gland, and reliable sealing between the stuffing box 6 and the valve rod 3 is realized; be equipped with seal gasket between stuffing box 6 and the valve body 1, and the lower extreme of stuffing box 6 is equipped with the bulge loop 61 that stretches into mounting hole 12, be equipped with the second sealing washer between bulge loop 61 and the mounting hole 12, through double seal, realize the reliable seal between stuffing box 6 and the valve body 1.
An annular boss 31 is formed at the position, close to the lower end, of the valve rod 3, the lower end of the annular boss 31 extends into the groove 21 of the ball body 2 and is in sealing fit with the groove 21, and the upper end of the annular boss 31 is located in the mounting hole 12 and forms an annular pressure cavity 13 with the stuffing box 6; the valve body 1 is also provided with a medium drainage hole 14 for communicating the annular pressure cavity 13 with the middle cavity 11.
Because the annular boss 31 of valve rod 3 and the recess 21 at spheroid 2 top between the sealed cooperation, when the medium got into lumen 11, the medium can not get into in the recess 21, thereby can not provide ascending thrust for valve rod 3, the medium can enter into annular pressure chamber 13 through medium drainage hole 14 on the contrary, thereby be used in the up end of annular boss 31, and can give valve rod 3 a decurrent thrust all the time, order about valve rod 3 downwards, consequently this valve rod 3 does not have the problem of blowing off, and fundamentally has eliminated the risk that valve rod 3 was blown off, valve rod 3 only has the effort that the medium acted on annular boss 31 up end at the effort of vertical direction simultaneously, the pressure effect area is little, consequently, the resistance that causes is also more, the moment of torsion is little, it is lighter to open and close the operation.
The two medium drainage holes 14 are respectively formed in the left side and the right side of the valve rod 3, and when a medium enters the middle cavity 11, the medium can rapidly enter the annular pressure cavity 13 through the medium drainage holes 14.
As shown in fig. 2, a first sealing ring 5 is arranged between the side wall of the annular boss 31 and the inner wall of the groove 21, and the first sealing ring 5 realizes reliable sealing between the annular boss 31 and the groove 21.
The antifriction sealing washer 4 is arranged between the bottom of the annular boss 31 and the groove 21, friction and abrasion can be reduced, torque is small, and when the annular boss 31 is pressed downwards by a medium, the antifriction sealing washer 4 can be pressed, and the sealing performance of the antifriction sealing washer is further improved.
And a shaft sleeve 7 is arranged between the annular boss 31 and the mounting hole 12 to reduce friction between the valve rod 3 and the valve body 1, further reduce rotation torque and make opening and closing operations easier.
Of course, the annular boss 31 may not extend into the mounting hole 12, and only a medium pressure space communicated with the middle cavity needs to be formed at the upper end of the annular boss 31, so that a medium can come to the upper end of the annular boss 31 to provide downward pressure for the annular boss, and of course, the annular boss 31 extends into the mounting hole 12, so that the assembly is convenient, the structure is more stable, and the action is more reliable.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should know that: although the present invention has been described in terms of the above-described embodiments, the inventive concept is not limited thereto, and any modification that utilizes the inventive concept is intended to be included within the scope of the appended claims.
Claims (6)
1. A valve rod anti-ejection ball valve comprises a valve body (1), a ball body (2) and a valve rod (3), wherein the ball body (2) is arranged in a middle cavity (11) of the valve body (1), and the valve rod (3) extends into the valve body (1) and is connected with the ball body (2); the method is characterized in that: an annular boss (31) is formed on the valve rod (3), a groove (21) matched with the annular boss (31) is formed at the top of the ball body (2), the lower end of the annular boss (31) extends into the groove (21) and is in sealing fit with the groove (21), and a medium pressure space is formed at the upper end of the annular boss (31); the upper end of the valve body (1) is provided with a mounting hole (12) for the valve rod (3) to pass through, and the upper end of the annular boss (31) is positioned in the mounting hole (12); a stuffing box (6) is arranged on the valve body (1), a convex ring extending into the mounting hole is arranged at the lower end of the stuffing box, and an annular pressure cavity (13) is formed between the annular boss and the stuffing box; the valve body (1) is also provided with a medium drainage hole (14) for communicating the annular pressure cavity (13) with the middle cavity (11).
2. The stem anti-blowout ball valve of claim 1, wherein: an antifriction sealing washer (4) is arranged between the bottom of the annular boss (31) and the groove (21).
3. The stem anti-blowout ball valve according to claim 1 or 2, wherein: a first sealing ring (5) is arranged between the side wall of the annular boss (31) and the inner wall of the groove (21).
4. The stem anti-blowout ball valve according to claim 1, wherein: and a shaft sleeve (7) is also arranged between the annular boss (31) and the mounting hole (12).
5. The stem anti-blowout ball valve according to claim 1, wherein: two medium drainage holes (14) are arranged and are respectively arranged at the left side and the right side of the valve rod (3).
6. The stem anti-blowout ball valve according to claim 1, wherein: the lower end of the stuffing box (6) is provided with a convex ring (61) extending into the mounting hole (12), and a second sealing ring is arranged between the convex ring (61) and the mounting hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170224.9A CN112283384B (en) | 2020-10-28 | 2020-10-28 | Valve rod blowout prevention ball outlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011170224.9A CN112283384B (en) | 2020-10-28 | 2020-10-28 | Valve rod blowout prevention ball outlet valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112283384A CN112283384A (en) | 2021-01-29 |
| CN112283384B true CN112283384B (en) | 2023-04-07 |
Family
ID=74372634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011170224.9A Active CN112283384B (en) | 2020-10-28 | 2020-10-28 | Valve rod blowout prevention ball outlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112283384B (en) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1124082B1 (en) * | 2000-02-10 | 2006-12-06 | Fujikoki Corporation | Four-way selector valve |
| CN1332150C (en) * | 2004-10-21 | 2007-08-15 | 姜永明 | Electric four-way change valve |
| CN101666385B (en) * | 2008-12-28 | 2011-10-26 | 胡勇坤 | Vacuum self-pressing superposed automatic compensating non-rotating ball valve |
| EP2280204A1 (en) * | 2009-07-31 | 2011-02-02 | Valbart S.r.l. | Trunnion-mounted ball valve with a flexible valve seat |
| CN204878815U (en) * | 2015-06-12 | 2015-12-16 | 浙江成高阀门有限公司 | Ultra -low temperature ball valve |
| CN205013733U (en) * | 2015-09-17 | 2016-02-03 | 付明 | Pressure differential self sealss formula plug valve |
| CN205479444U (en) * | 2016-01-22 | 2016-08-17 | 上海瑞托阀门科技有限公司 | Forge unsteady ball valve of ultra -low temperature upper assembling type of valve body |
| CN205446860U (en) * | 2016-01-26 | 2016-08-10 | 上海瑞控阀门有限公司 | Ultra -low temperature upper assembling type welded ball valve |
| CN207064702U (en) * | 2017-08-15 | 2018-03-02 | 高邮市高农机械配件有限公司 | A kind of Subzero valve |
| CN207569255U (en) * | 2017-11-02 | 2018-07-03 | 圣博莱阀门有限公司 | A kind of double DBB cryogenic ball valves for blocking and discharging |
| CN111853272A (en) * | 2019-04-26 | 2020-10-30 | 约克广州空调冷冻设备有限公司 | Valve with a valve body |
| CN111255909A (en) * | 2020-01-17 | 2020-06-09 | 浙江大学 | Ultra-low temperature ball valve body cavity abnormity-preventing boosting device with self-closing function and method thereof |
| CN111536254A (en) * | 2020-04-30 | 2020-08-14 | 韩国昊 | Low-torque high-pressure ball valve |
-
2020
- 2020-10-28 CN CN202011170224.9A patent/CN112283384B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112283384A (en) | 2021-01-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212429779U (en) | Stop valve with long service life | |
| CN112283384B (en) | Valve rod blowout prevention ball outlet valve | |
| CN102182564A (en) | Butterfly sheet of exhausting brake butterfly valve and exhausting brake butterfly valve | |
| CN111043332B (en) | Metal sealed three eccentric butterfly valve | |
| CN212899855U (en) | Linkage type self-discharging valve | |
| KR20100002165U (en) | A self-balancing type self-compensation sealed valve | |
| CN101672377B (en) | Automatic-compensation sealing plug valve | |
| CN219282481U (en) | Anticreep ball formula ball valve that floats | |
| CN215410315U (en) | Double-floating bidirectional hard-sealing rotary ball valve | |
| CN113738882A (en) | Double-throttle regulating valve | |
| CN203730812U (en) | Noise reduction ball valve | |
| CN218000422U (en) | Three-eccentric butterfly valve | |
| CN112923097A (en) | Spherical emergency cut-off valve | |
| CN216479043U (en) | Air-tight wear-resistant C-shaped ball valve | |
| CN214248377U (en) | Top-mounted ball valve for thermal power ultra-supercritical | |
| CN219932957U (en) | Air supplementing device for central hole of main shaft | |
| KR102130173B1 (en) | Electronic expansion valve and cooling and heating system | |
| CN112066017A (en) | Gate valve | |
| CN201972790U (en) | Butterfly sheet of exhaust brake butterfly valve and exhaust brake butterfly valve thereof | |
| CN210265937U (en) | Pneumatic sliding window type flow regulating valve | |
| CN210240641U (en) | Metal sealing ball valve | |
| CN112797179B (en) | Top-mounted ball valve for thermal power ultra-supercritical | |
| CN220060539U (en) | Pulse angle valve | |
| CN216078308U (en) | Single-seat regulating valve | |
| CN220891139U (en) | Bidirectional hard seal floating ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |