CN105972241A - Semi-contact type sealing ball valve - Google Patents
Semi-contact type sealing ball valve Download PDFInfo
- Publication number
- CN105972241A CN105972241A CN201610551393.4A CN201610551393A CN105972241A CN 105972241 A CN105972241 A CN 105972241A CN 201610551393 A CN201610551393 A CN 201610551393A CN 105972241 A CN105972241 A CN 105972241A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve seat
- semi
- sphere
- 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.)
- Granted
Links
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
- F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
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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
- F16K27/06—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
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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
- F16K5/0689—Packings between housing and plug
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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
- F16K5/0694—Spindle sealings
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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
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
Abstract
The invention discloses a semi-contact type sealing ball valve which comprises a valve body (1), valve seats (2) and a ball body (3). A fluid channel (4) is arranged in the valve body (1). The two opposite valve seats (2) are arranged on the fluid channel (4). The ball body (3) is arranged between the two valve seats (2) in a sealed manner. The surface of the ball body (3) is a non-continuous ball surface. The non-continuous ball surface comprises first ball surface bodies (5) located on the inner rings of sealing lines of the valve seats (2), and second ball surface bodies (6) making contact with the sealing lines of the valve seats (2) and having a sealing effect. The diameter of the first ball surface bodies (5) is smaller than the diameter of the second ball surface bodies (6). By means of the semi-contact type sealing ball valve, damage of corrosive media and media likely to be crystallized to the ball valve can be extremely effectively removed, and the service life of the valve is greatly prolonged.
Description
Technical field
The present invention relates to a kind of semi-contact seal ball-valve, particularly relate to a kind of hard seal floating ball valve of small diameter metal, belong to ball valve technical field.
Background technology
Total well known, the fluid passage that the major function of ball valve is turned off or connects in pipeline, its action principle is the simplest, in the certain torque of applying of valve rod upper end and spheroid is passed to by handle or other driving means, make its half-twist (or except angle of other particular/special requirements), the through hole of spheroid then overlaps or vertical with valve channel centrage, and ball valve just completes standard-sized sheet or fully closed action.The features such as ball valve is little with its fluid resistance, rapid, the valve body internal channel flat smooth of switch, have been developed as a kind of main valve class, are obtained for and are widely applied in terms of the many such as space flight, oil, chemical industry, long-distance transport pipes, light industry food, building.Along with economy, the development of the market demand, the special construction ball valve of some specific uses is continuing to bring out, the demand of the metal ball-valve of low-friction coefficient the most high temperature resistant, wear-resistant, corrosion resistant.The valve of pipeline medium circulation is controlled relative to other, although traditional soft seal float ball valve possesses the characteristic that ball valve is intrinsic, but, traditional floating hard seal ball valve, owing to structure is single, lack the quick response to field maintenance service, and especially it is susceptible to spot corrosion at some, the special operation condition of medium crystallization, such as superheat steam pipeline to idle discharge gas application aspect, owing to sphere is directly facing air, extraneous foreign material such as mixing sleet etc. falls to herein, owing to a high position for system causes the temperature of sphere can reach more than degree more than 500, on the one hand foreign material can be heated and cured and stick to spherome surface, on the other hand the coating of sphere can be caused spot corrosion by the sleet liquid of frost, traditional floating hard seal ball valve cannot meet client and the market demand, significantly limit the development of hard seal floating ball valve.
Summary of the invention
The technical problem to be solved is, there is provided a kind of can the damage that ball valve is brought of the medium of extremely effective elimination corrosivity and easily crystallization, greatly extend the service life of valve, it is adaptable to the semi-contact seal ball-valve of the high pressure operating mode that small-bore floating ball valve is harsh to seal request；Further, the present invention provide a kind of when reducing startup valve rod act on the semi-contact seal ball-valve of the impulsive force on valve ball；Further, the present invention provides a kind of guarantee valve rod to reliably seal property, the semi-contact seal ball-valve that gland assembly can be changed online.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of semi-contact seal ball-valve, including valve body, valve seat and spheroid, it is provided with fluid passage in described valve body, two relative described valve seats it are provided with on described fluid passage, sealed between valve seat described in two it is provided with described spheroid, the surface of described spheroid is noncontinuity sphere, and described noncontinuity sphere includes the sphere one being positioned at described valve base sealing line inner ring and the sphere two playing sealing function contacted with described valve base sealing line；The diameter of described sphere one is less than the diameter of described sphere two.
It is provided with some depressions on described sphere one.
Described valve base sealing line matches with the radian of described sphere two and merges formation sealing pair.
nullIt is provided with endoporus in described valve body，It is provided with pilot sleeve in described endoporus，Valve rod flat formula one end is connected with the rectangle cross-shaped holes on described spheroid top behind described pilot sleeve top，Described rectangle cross-shaped holes communicates with described fluid passage，Described valve seat includes upstream support valve seat and the downstream valve seat being respectively arranged at described valve rod both sides，Described upstream support valve seat is arranged in described pilot sleeve，It is provided with butterfly spring between described upstream support valve seat and the upstream inwall of described pilot sleeve，Described downstream valve seat includes the cylindrical valve seat small end contacted with described spheroid and the cylindrical big end of valve seat being connected with valve gap，Tapered ramp is had to be connected between the big end of described valve seat and valve seat small end，The big end of described valve seat is positioned at outside described pilot sleeve，By wedge-type seal circle and washer sealing between the downstream of described tapered ramp and described pilot sleeve.
Described fluid passage sequentially passes through the upstream extremity of described pilot sleeve, butterfly spring, upstream support valve seat, spheroid and downstream valve seat.
Described valve body top is fixedly installed gland assembly, and the filler group on described gland assembly is provided with dynamic load spring.
The material of described valve seat and spheroid all includes metal.
The surface of described valve seat and spheroid is provided with sprayed coating.
The material of described packing ring includes metal.
Beneficial effects of the present invention: a kind of semi-contact seal ball-valve that the present invention provides, its sealing surface of seat is only chronically exposed to corrosivity with non-or contact with the smooth sphere (i.e. sphere two) in crystallization medium during switch, maximum degree avoids the phenomenon of slag inclusion between the sealing surface that spherome surface causes due to coating damage and the existence of hard crystallization attachment, and then damage critical seal surface, greatly extend the service life of valve；The setting of the depression on sphere one, make hard spot that the spot corrosion formed in the region of depression and deposit formed will not in switching process scratch or extruding spheroid and the sprayed coating of valve seat, make the present invention long for service life；Spheroid coordinates face to be rectangle cross-shaped holes with valve rod, uses matched in clearance, and rectangle cross-shaped holes communicates with fluid passage, makes squish area of the present invention increase, and when reducing startup, valve rod acts on the impulsive force on valve ball；Filler group on gland assembly is provided with dynamic load spring, continual can carry out dynamic stress loading to filler, and to ensure valve rod positive sealing property, gland assembly can be changed online.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of spheroid in the present invention；
Fig. 3 is the enlarged drawing of part A in Fig. 2.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described.
As shown in Fig. 1 ~ Fig. 3, a kind of semi-contact seal ball-valve, including valve body 1, butterfly spring 13, upstream support valve seat 11, spheroid 3, pilot sleeve 8, valve rod 9, downstream valve seat 12, packing ring 15, wedge-type seal circle 16, valve gap 14, gland assembly 17, dynamic load spring 18.It is provided with fluid passage 4 in described valve body 1, two relative described valve seats 2 it are provided with on described fluid passage 4, sealed between valve seat 2 described in two it is provided with described spheroid 3, described valve body 1 endoporus arranges pilot sleeve 8, pilot sleeve 8 is provided with a hole at valve rod 9 hole, butterfly spring 13 is set gradually bottom valve body 1, upstream support valve seat 11, spheroid 3, pilot sleeve 8 other end arranges packing ring 15, wedge-type seal circle 16, valve body 1 other end loads downstream valve seat 12 and valve gap 14, valve rod 9 forges for single unitary, the sphere of described spheroid 3 is noncontinuity sphere, described noncontinuity sphere includes the sphere 1 being positioned at described valve seat 2 seal line inner ring and the sphere 26 playing sealing function contacted with described valve seat 2 seal line；The diameter of described sphere 1 is less than the diameter of described sphere 26.Some depressions 7 it are provided with on described sphere 1.Spheroid 3 top arranges a rectangle cross-shaped holes 10, flat for valve rod 9 formula one end is loaded and loads spheroid 3 top from valve body 1 top, rectangle cross-shaped holes 10 communicates with fluid passage 4, squish area increases, in spheroid 3 closed position, the major axis of rectangle cross-shaped holes 10 is consistent with fluid passage 4 axis, increase the domain of walker of the spheroid of floating ball valve, screw stationary gland assembly 17 is passed through on valve body 1 top, filler group on gland assembly 17 is provided with dynamic load spring 18, continual can carry out dynamic stress loading to filler, ensure valve rod 9 positive sealing property, close closed solid sphere 3, gland assembly 17 can be changed online.
The material of described valve seat 2 and spheroid 3 is metal.
The material of described packing ring 15 is metal.
Described spheroid 3 coordinates face to be rectangle cross-shaped holes 10 with valve rod 9, use matched in clearance, communicate with fluid passage 4, roomy valve rod-valve ball drives area, making squish area increase, when reducing startup, valve rod 9 acts on the impulsive force on valve ball, in spheroid 3 closed position, the major axis of rectangle cross-shaped holes 10 is consistent with fluid passage 4 axis, increases the domain of walker of the spheroid 3 of floating ball valve.
The sphere of described spheroid 3 is noncontinuity sphere, the hard spot that the spot corrosion formed in the region that spheroid 3 surface diameter is less and deposit are formed will not scratch or extruding spheroid 3 and the sprayed coating of valve seat 2 in switching process again, it is adaptable to the high pressure operating mode that small-bore floating ball valve is harsh to seal request.
Filler group on described gland assembly 17 is provided with dynamic load spring 18, continual can carry out dynamic stress loading to filler, it is ensured that valve rod positive sealing property, gland assembly 17 can be changed online.
Specifically used mode is as follows: spheroid 3 is set to noncontinuity sphere, the diameter design of the ball surface being positioned at valve seat 2 seal line inner ring must be little compared with the sphere to sealing function, during valve ball rotates, this spherical calotte is discontiguous with valve seat 2, and the problem of spot corrosion and medium crystallization occurs in the region that this spherical diameter is less mostly.Spheroid 3 rotates, crystallized the thickness sphere less than valve seat 2 with the sealing surface place of spheroid 3 of attachment by spot corrosion and medium herein, never contact valve seat 2 sealing surface, so the coating will not destroyed on valve seat 2 sealing surface, avoid the damage in critical seal face, thus improve the service life of valve.
The above is only the preferred embodiment of the present invention; it is noted that, for those skilled in the art; under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a semi-contact seal ball-valve, including valve body (1), valve seat (2) and spheroid (3), fluid passage (4) it is provided with in described valve body (1), two relative described valve seats (2) it are provided with on described fluid passage (4), sealed between valve seat described in two (2) it is provided with described spheroid (3), it is characterized in that: the surface of described spheroid (3) is noncontinuity sphere, described noncontinuity sphere includes the sphere one (5) being positioned at described valve seat (2) seal line inner ring and the sphere two (6) playing sealing function contacted with described valve seat (2) seal line；The diameter of described sphere one (5) is less than the diameter of described sphere two (6).
A kind of semi-contact seal ball-valve the most according to claim 1, it is characterised in that: it is provided with some depressions (7) on described sphere one (5).
A kind of semi-contact seal ball-valve the most according to claim 1, it is characterised in that: described valve seat (2) seal line matches with the radian of described sphere two (6) and merges formation sealing pair.
nullA kind of semi-contact seal ball-valve the most according to claim 1，It is characterized in that: described valve body is provided with endoporus in (1)，Pilot sleeve (8) it is provided with in described endoporus，Valve rod (9) flat formula one end is connected with the rectangle cross-shaped holes (10) on described spheroid (3) top behind described pilot sleeve (8) top，Described rectangle cross-shaped holes (10) communicates with described fluid passage (4)，Described valve seat (2) includes upstream support valve seat (11) and the downstream valve seat (12) being respectively arranged at described valve rod (9) both sides，Described upstream support valve seat (11) is arranged in described pilot sleeve (8)，Butterfly spring (13) it is provided with between the upstream inwall of described upstream support valve seat (11) and described pilot sleeve (8)，Described downstream valve seat (12) includes the cylindrical valve seat small end contacted with described spheroid (3) and the cylindrical big end of valve seat being connected with valve gap (14)，Tapered ramp is had to be connected between the big end of described valve seat and valve seat small end，It is outside that the big end of described valve seat is positioned at described pilot sleeve (8)，Sealed by wedge-type seal circle (16) and packing ring (15) between the downstream of described tapered ramp and described pilot sleeve (8).
A kind of semi-contact seal ball-valve the most according to claim 4, it is characterised in that: described valve body (1) top is fixedly installed gland assembly (17), and the filler group on described gland assembly (17) is provided with dynamic load spring (18).
A kind of semi-contact seal ball-valve the most according to claim 1, it is characterised in that: the material of described valve seat (2) and spheroid (3) all includes metal.
A kind of semi-contact seal ball-valve the most according to claim 1, it is characterised in that: the surface of described valve seat (2) and spheroid (3) is provided with sprayed coating.
A kind of semi-contact seal ball-valve the most according to claim 1, it is characterised in that: the material of described packing ring (15) includes metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551393.4A CN105972241B (en) | 2016-07-14 | 2016-07-14 | A kind of semi-contact seal ball-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610551393.4A CN105972241B (en) | 2016-07-14 | 2016-07-14 | A kind of semi-contact seal ball-valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105972241A true CN105972241A (en) | 2016-09-28 |
| CN105972241B CN105972241B (en) | 2018-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610551393.4A Active CN105972241B (en) | 2016-07-14 | 2016-07-14 | A kind of semi-contact seal ball-valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN105972241B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033299A1 (en) * | 2000-10-16 | 2002-04-25 | Metso Field Systems Oy | Optimized sealing surface for a valve |
| CN2744904Y (en) * | 2004-09-22 | 2005-12-07 | 宁波恒久工艺品有限公司 | Ball valve |
| CN102734484A (en) * | 2011-03-31 | 2012-10-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
| CN103711927A (en) * | 2013-06-04 | 2014-04-09 | 烟台开发区金泰美林科技有限公司 | High-pressure high-temperature ceramic adjusting ball valve |
| CN204164416U (en) * | 2014-08-15 | 2015-02-18 | 重庆川仪特种阀门修造有限公司 | A kind of LNG ball body of valve |
| CN204961893U (en) * | 2015-09-15 | 2016-01-13 | 重庆川仪特种阀门修造有限公司 | Special ball valve of silica flour tail gas |
| CN105587885A (en) * | 2016-03-11 | 2016-05-18 | 航天长征化学工程股份有限公司 | Sealing ball valve |
| CN205715757U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of Novel sphere structure of Coal Chemical Industry ball valve |
| CN205877254U (en) * | 2016-07-14 | 2017-01-11 | 昆山维萨阀门有限公司 | Half contact -type sealing ball valve |
-
2016
- 2016-07-14 CN CN201610551393.4A patent/CN105972241B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033299A1 (en) * | 2000-10-16 | 2002-04-25 | Metso Field Systems Oy | Optimized sealing surface for a valve |
| CN2744904Y (en) * | 2004-09-22 | 2005-12-07 | 宁波恒久工艺品有限公司 | Ball valve |
| CN102734484A (en) * | 2011-03-31 | 2012-10-17 | 上海耐莱斯·詹姆斯伯雷阀门有限公司 | Lifting rod-type ball valve |
| CN103711927A (en) * | 2013-06-04 | 2014-04-09 | 烟台开发区金泰美林科技有限公司 | High-pressure high-temperature ceramic adjusting ball valve |
| CN204164416U (en) * | 2014-08-15 | 2015-02-18 | 重庆川仪特种阀门修造有限公司 | A kind of LNG ball body of valve |
| CN204961893U (en) * | 2015-09-15 | 2016-01-13 | 重庆川仪特种阀门修造有限公司 | Special ball valve of silica flour tail gas |
| CN105587885A (en) * | 2016-03-11 | 2016-05-18 | 航天长征化学工程股份有限公司 | Sealing ball valve |
| CN205715757U (en) * | 2016-05-03 | 2016-11-23 | 上海浙东阀门集团有限公司 | A kind of Novel sphere structure of Coal Chemical Industry ball valve |
| CN205877254U (en) * | 2016-07-14 | 2017-01-11 | 昆山维萨阀门有限公司 | Half contact -type sealing ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105972241B (en) | 2018-05-11 |
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Address after: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee after: Kunshan Weisa Valve Co., Ltd. Address before: Jinxi town Jin Lu Kunshan Road, Suzhou City, Jiangsu Province, No. 18 215324 Patentee before: Kunshan Weisa Valve Co., Ltd. |