CN105090590A - Top-mounted fixed ball valve free of valve seat avoiding - Google Patents
Top-mounted fixed ball valve free of valve seat avoiding Download PDFInfo
- Publication number
- CN105090590A CN105090590A CN201510585912.4A CN201510585912A CN105090590A CN 105090590 A CN105090590 A CN 105090590A CN 201510585912 A CN201510585912 A CN 201510585912A CN 105090590 A CN105090590 A CN 105090590A
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- Prior art keywords
- valve
- ball
- valve seat
- seat
- valve body
- 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
- 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
- F16K5/0605—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
- 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
- F16K5/0626—Easy mounting or dismounting 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
- 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
The invention discloses a top-mounted fixed ball valve free of valve seat avoiding. The top-mounted fixed ball valve comprises a valve body, an upper valve cover, a valve ball, a valve seat and a valve rod. The valve body is of an integrated structure. The valve ball is composed of a spherical surface part and a plane part, thereby being of an asymmetric hemisphere structure, wherein the plane part of the valve ball is parallel with the axis of a channel hole. The valve seat is installed at one end of a middle cavity of the valve body, and the inner end face, opposite to the valve ball, of the valve seat is provided with a sealing seat to form a sealing face. In the assembly process, an auxiliary sealing element and the valve seat are arranged in one end of the valve body first, the plane part of the valve ball is arranged in the middle cavity of the valve body toward the valve seat, and then the valve ball is rotated by 180 degrees so that the spherical surface part of the valve ball can make tight contact with the sealing face of the valve seat to achieve the sealing effect. If needed, disassembly for maintenance can be performed in the inverted sequence. The top-mounted fixed ball valve is convenient to install, internal parts of the valve can be conveniently maintained or replaced without disassembling the valve body from a pipeline, and therefore online maintenance and assembly time is shortened.
Description
Technical field
The present invention relates to a kind of valve, be specifically related to a kind of roof-mounted fixing ball valve made a concession without the need to valve seat.
Background technique
Along with the continuous construction and development of energy industry, the use of ball valve gets more and more, wherein especially can bear the fixing ball valve of high pressure for representative.But the valve body of fixing ball valve conventional at present is generally assembled by the main valve body of centre and the auxiliary valve body of the left and right sides, is characterized in:
1) valve seat and secondary seal are arranged in the auxiliary valve body of the left and right sides, sphere installation is in main valve body, the auxiliary valve body of the left and right sides and the main valve body of centre assembled after form sealing between valve seat and spheroid, such structure relative complex, weight is relatively heavier, and valve must be unloaded could safeguard from pipeline when keeping in repair valve, waste time and energy.
2) generally carry out two way sealed with double-valve-seat structure, spheroid is also total, and this structure is in Long-Time Service process, and after may causing valve closing, the problem that the pressure in the main valve body between two valve seats raises, easily causes danger.
3) also there is an employing valve seat, but can only one-way sealing be accomplished.
Summary of the invention
The object of the present invention is to provide a kind of roof-mounted fixing ball valve made a concession without the need to valve seat, its structure is simple, and use reliable, installation and maintenance are convenient, can save the time of on-line maintenance and assembling, reduce labor intensity.
The technological scheme realizing above-mentioned purpose is: a kind of roof-mounted fixing ball valve made a concession without the need to valve seat, comprise valve body, bonnet, valve ball, valve seat and valve rod with port hole and lower handle, the two ends of described valve body have a passway connected with pipeline passway respectively, and the middle part of this valve body has lumen; Described bonnet is bolted on the top of the lumen of described valve body; Described valve ball is arranged in the lumen of described valve body; Described valve rod is connected with the upper end of described valve ball through the perforation on described bonnet, wherein,
Described valve body adopts monolithic construction, and the lower central of the lumen of this valve body is provided with a supporting counterbore;
Described valve ball is made up of land portions and planar section and is asymmetric hemisphere structure, the planar section of described valve ball and the axis being parallel of described port hole, the lower handle of this valve ball is bearing in the supporting counterbore of described valve body, this valve ball is rotated by the operating device be connected on described valve rod, and valve ball is opened or blocking pipeline passage;
Described valve seat is arranged on one end of the lumen of described valve body, and this valve seat arranges a sealing seat to form sealing surface on the interior edge face relative with described valve ball;
During assembling, first described valve seat and secondary seal are loaded one end of valve body, the direction again planar section of described valve ball being faced described valve seat loads the lumen of described valve body, make that there is between the planar section of valve ball and the sealing surface of valve seat enough gaps, guarantee that valve seat is without the need to making a concession the lumen that valve ball can be loaded valve body, then rotate valve ball 180 °, make the sealing surface close contact of the land portions of valve ball and valve seat reach the effect of pre-tightening seal.
The above-mentioned roof-mounted fixing ball valve made a concession without the need to valve seat, wherein,
The outer circumferential face of described valve seat is the secondary stepped cylindrical face with great circle cylinder, middle cylndrical surface and small cylindrical surface, and great circle cylinder, middle cylndrical surface and small cylindrical surface are arranged successively from inside to outside;
The inside of described valve seat is provided with the greasing hole of interior edge face to described small cylindrical surface from this valve seat;
The interior edge face of described valve seat comprises the inside interior edge face of relative with described valve ball and concentric with the land portions of valve ball spherical shape and not relative with valve ball plane outside interior edge face;
Midline position on the inside interior edge face that described sealing seat is located at described valve seat and between described middle cylndrical surface and small cylindrical surface;
Described secondary seal first O-ring seals, the second O-ring seals, spring and fire-protection ring; Described first O-ring seals is located on the step surface between the middle cylndrical surface of valve seat and small cylindrical surface; The small cylindrical surface that described second O-ring seals is located at valve seat is positioned at the outside in described greasing hole; Be resisted against on the step surface between the great circle cylinder of valve seat and middle cylndrical surface in the spring groove that described spring fitting is offered on described valve body; Described fire-protection ring is located on the middle cylndrical surface of valve seat.
The above-mentioned roof-mounted fixing ball valve made a concession without the need to valve seat, wherein, described sealing seat is be embedded in the non-metallic seal on described valve seat.
The above-mentioned roof-mounted fixing ball valve made a concession without the need to valve seat, wherein, described sealing seat is pile the cemented carbide be welded on described valve seat.
The technological scheme of the roof-mounted fixing ball valve without the need to valve seat yielding of the present invention has following characteristics:
1) valve body adopts monolithic construction: can not only alleviate overall weight, also have less possible leakage point, and this structure meet the requirement of valve on-line maintenance;
2) single valve seat structure is adopted: use a valve seat through particular design, but valve has the function of two way sealed, no matter the left end passway of valve is in relatively high pressure or right-hand member passway is in relatively high pressure, and valve can reliable two-way isolation and two way sealed;
3) valve ball adopts asymmetric semiglobe: solve the valve seat in conventional fixing ball valve and the problem of the online dismounting maintenance difficult of valve ball, save on-line maintenance and installation time, reduction labor intensity.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing of the roof-mounted fixing ball valve without the need to valve seat yielding of the present invention;
Fig. 2 is the transverse cross-sectional view of the roof-mounted fixing ball valve without the need to valve seat yielding of the present invention;
Fig. 3 a is the sealing principle figure of roof-mounted fixing ball valve when outside high pressure, the lumen low pressure of valve seat made a concession without the need to valve seat of the present invention;
Fig. 3 b is the sealing principle figure of roof-mounted fixing ball valve when outside low pressure, the lumen high pressure of valve seat made a concession without the need to valve seat of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1 and Fig. 2, the roof-mounted fixing ball valve made a concession without the need to valve seat of the present invention, comprises valve body 1, bonnet 2, valve ball 3, valve seat 4, valve rod 5 and secondary seal with port hole 30 and lower handle 31, wherein:
Valve body 1 adopts monolithic construction, and the two ends of this valve body 1 have a passway connected with pipeline passway 11,12 respectively, and the middle part of this valve body 1 has lumen 10, and the lower central of this lumen 10 is provided with a supporting counterbore;
Bonnet 2 is bolted on the top of the lumen 10 of valve body 1;
Valve ball 3 is arranged in the lumen 10 of valve body, and this valve ball 3 is made up of land portions and planar section and is asymmetric hemisphere structure, the planar section of this valve ball 3 and the axis being parallel of port hole 30, and the lower handle 31 of this valve ball 3 is bearing in the supporting counterbore of valve body 1;
Valve seat 4 is arranged on one end of the lumen 10 of valve body, the physical fit of the inner peripheral surface of one end of the structure of the outer circumferential face of valve seat 4 and the lumen 10 of valve body secondary stepped cylindrical face for having great circle cylinder, middle cylndrical surface and small cylindrical surface, and great circle cylinder, middle cylndrical surface and small cylindrical surface are arranged successively from inside to outside; The inside of valve seat 4 is provided with the greasing hole 40 from the interior edge face of this valve seat 4 to the right angle bending of small cylindrical surface, and this greasing hole 40 is communicated with the greasing passage 13 on valve body 1; The interior edge face of valve seat 4 comprises the inside interior edge face of relative with valve ball 3 and concentric with the land portions of valve ball 3 spherical shape and not relative with valve ball 3 plane outside interior edge face; The inside interior edge face of valve seat 4 is arranged a sealing seat 6 to form the sealing surface to valve ball 3, the midline position of sealing seat 6 between middle cylndrical surface and small cylindrical surface; Sealing seat 6 is welded in cemented carbide on valve seat 4 for being embedded in non-metallic seal on valve seat 4 or heap;
Valve rod 5 is connected with the upper end of valve ball 3 through the perforation on bonnet 2; Valve ball 3, by being connected to the operating device half-twist on valve rod 5, makes valve ball 3 open or close pipeline passway;
Secondary seal comprises the first seal ring 91, second seal ring 92, spring 7 and fire-protection ring 8; First seal ring 91 is located on the step surface between the middle cylndrical surface of valve seat 4 and small cylindrical surface; The small cylindrical surface that second seal ring 92 is located at valve seat 4 is positioned at the outside in greasing hole 40; Spring 7 to be arranged in spring groove that valve body 1 is offered and to be resisted against on the step surface between the great circle cylinder of valve seat 4 and middle cylndrical surface; Fire-protection ring 8 is located on the middle cylndrical surface of valve seat 4.
During assembling, first spring 7, fire-protection ring 8, first O-ring seals 91, second O-ring seals 92 and valve seat 4 are loaded one end of the lumen 10 of valve body 1, the direction again planar section of valve ball 3 being faced valve seat 4 loads the lumen 10 of valve body 1, make, between the sealing surface of the planar section of valve ball 3 and valve seat 4, there is enough gaps, guarantee that valve seat 4 is without the need to making a concession the lumen 10 that valve ball 3 can be loaded valve body, then valve ball 3 is rotated 180 °, make the sealing surface close contact of the land portions of valve ball 3 and valve seat 4 reach the effect of pre-tightening seal.
The roof-mounted fixing ball valve made a concession without the need to valve seat of the present invention, adopt single valve seat structure, precisely designed valve seat 4 has two way sealed function, and no matter the left end passway of valve is in relatively high pressure or right-hand member passway is in relatively high pressure, and valve can reliable two-way isolation and two way sealed.
The principle that single valve seat has two way sealed function is as follows:
When the lumen low pressure of the outside high pressure of valve seat, valve body (see Fig. 3 a): valve seat 4 is along the axial motion of valve, put on the active area A2 of valve seat 4 be adjacent to valve ball 3 just push away (upstream) power P1, generation one departs from the reaction thrust of valve ball 3 by the active area A1 of valve seat 4, because active area A2 is greater than active area A1, i.e. A2-A1=X1, the power therefore put on the active area X1 of valve seat 4 pushes valve seat 4 to tight seal that valve ball 3 reaches upstream.
Active area A2 is the area sum of the area of the exterior edge face of valve seat 4 and the step surface between the middle cylndrical surface of valve seat 4 and small cylindrical surface.Active area A1 is the area of the inside interior edge face within the midline position between the middle cylndrical surface of valve seat 4 and small cylindrical surface.
When the lumen high pressure of the outside low pressure of valve seat, valve body (see Fig. 3 b): at pressure reduction less or without pressure reduction, valve seat 4 along the axial motion of valve, is pushed valve seat 4 to valve ball 3 and is kept tight seal under the effect of spring 7; When the lumen 10 internal pressure P2 of valve body increases, the power put on the active area A5 of valve seat 4 is greater than the power on active area A4, i.e. A5-A4=X3, the power therefore put on the active area X3 of valve seat 4 pushes valve seat 4 to tight seal that valve ball 3 reaches downstream.
Active area A5 is the area sum of the area of step surface between the middle cylndrical surface of valve seat 4 and small cylindrical surface and the step surface between the great circle cylinder of valve seat 4 and middle cylndrical surface.Active area A4 is the area sum of the area of inside interior edge face beyond the midline position between the middle cylndrical surface of valve seat 4 and small cylindrical surface and the outside interior edge face of valve seat 4.
Roof-mounted fixing ball valve without the need to valve seat yielding of the present invention has following characteristics:
1) valve body adopts monolithic construction, bonnet and valve body adopt bolton mode to be connected: the fixing ball valve of 3 stops valve body compared to existing technology, it has less possible leakage point, and this structural design meets the requirement of valve on-line maintenance, when valve needs repairing online, only need to open bonnet and just valve ball and valve seat can be safeguarded from dismounting in the lumen of valve body.
2) single valve seat structure is adopted: valve seat is arranged on the side of spheroid, the opposite side of spheroid is without valve seat, there is through the single valve seat of special careful design the function of two way sealed, no matter the left end passway of valve is in relatively high pressure or right-hand member passway is in relatively high pressure, and valve can reliable two-way isolation and two way sealed.Moreover, single valve seat structure makes the lumen of valve body and pipeline keep unimpeded, avoids the ball valve of the 3 stops valve body of prior art, the problem that the long-term switch of valve body uses the middle cavity pressure of rear valve body to raise.
3) valve ball adopts asymmetric semiglobe: make valve seat can load in valve body by valve ball without the need to making a concession, solve the problem of valve seat in the fixing ball valve of prior art and the online dismounting maintenance difficult of valve ball, save on-line maintenance and installation time, reduce labor intensity.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, various conversion or modification can also be made, therefore all equivalent technological schemes also should belong to category of the present invention, should be limited by each claim.
Claims (4)
1., without the need to the roof-mounted fixing ball valve that valve seat is made a concession, comprise valve body, bonnet, valve ball, valve seat and valve rod with port hole and lower handle, the two ends of described valve body have a passway connected with pipeline passway respectively, and the middle part of this valve body has lumen; Described bonnet is bolted on the top of the lumen of described valve body; Described valve ball is arranged in the lumen of described valve body; Described valve rod is connected with the upper end of described valve ball through the perforation on described bonnet, it is characterized in that,
Described valve body adopts monolithic construction, and the lower central of the lumen of this valve body is provided with a supporting counterbore;
Described valve ball is made up of land portions and planar section and is asymmetric hemisphere structure, the planar section of described valve ball and the axis being parallel of described port hole, the lower handle of this valve ball is bearing in the supporting counterbore of described valve body, this valve ball is rotated by the operating device be connected on described valve rod, and valve ball is opened or blocking pipeline passage;
Described valve seat is arranged on one end of the lumen of described valve body, and this valve seat arranges a sealing seat to form sealing surface on the interior edge face relative with described valve ball;
During assembling, first described valve seat and secondary seal are loaded one end of valve body, the direction again planar section of described valve ball being faced described valve seat loads the lumen of described valve body, make that there is between the planar section of valve ball and the sealing surface of valve seat enough gaps, guarantee that valve seat is without the need to making a concession the lumen that valve ball can be loaded valve body, then rotate valve ball 180 °, make the sealing surface close contact of the land portions of valve ball and valve seat reach the effect of pre-tightening seal.
2. the roof-mounted fixing ball valve made a concession without the need to valve seat according to claim 1, is characterized in that,
The outer circumferential face of described valve seat is the secondary stepped cylindrical face with great circle cylinder, middle cylndrical surface and small cylindrical surface, and great circle cylinder, middle cylndrical surface and small cylindrical surface are arranged successively from inside to outside;
The inside of described valve seat is provided with the greasing hole of interior edge face to described small cylindrical surface from this valve seat;
The interior edge face of described valve seat comprises the inside interior edge face of relative with described valve ball and concentric with the land portions of valve ball spherical shape and not relative with valve ball plane outside interior edge face;
Midline position on the inside interior edge face that described sealing seat is located at described valve seat and between described middle cylndrical surface and small cylindrical surface;
Described secondary seal first O-ring seals, the second O-ring seals, spring and fire-protection ring; Described first O-ring seals is located on the step surface between the middle cylndrical surface of valve seat and small cylindrical surface; The small cylindrical surface that described second O-ring seals is located at valve seat is positioned at the outside in described greasing hole; Be resisted against on the step surface between the great circle cylinder of valve seat and middle cylndrical surface in the spring groove that described spring fitting is offered on described valve body; Described fire-protection ring is located on the middle cylndrical surface of valve seat.
3. the roof-mounted fixing ball valve made a concession without the need to valve seat according to claim 1 and 2, it is characterized in that, described sealing seat is be embedded in the non-metallic seal on described valve seat.
4. the roof-mounted fixing ball valve made a concession without the need to valve seat according to claim 1 and 2, is characterized in that, described sealing seat is pile the cemented carbide be welded on described valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585912.4A CN105090590A (en) | 2015-09-15 | 2015-09-15 | Top-mounted fixed ball valve free of valve seat avoiding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585912.4A CN105090590A (en) | 2015-09-15 | 2015-09-15 | Top-mounted fixed ball valve free of valve seat avoiding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105090590A true CN105090590A (en) | 2015-11-25 |
Family
ID=54571627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585912.4A Pending CN105090590A (en) | 2015-09-15 | 2015-09-15 | Top-mounted fixed ball valve free of valve seat avoiding |
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| Country | Link |
|---|---|
| CN (1) | CN105090590A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375829Y (en) * | 1999-06-01 | 2000-04-26 | 杨永祥 | Ball valve |
| CN201348060Y (en) * | 2008-12-22 | 2009-11-18 | 凯泰阀门(集团)有限公司 | Pulverized coal injection ball valve |
| US20110168934A1 (en) * | 2010-01-11 | 2011-07-14 | Greg Sisk | Ball valve for a tank trailer |
| CN203548978U (en) * | 2013-11-29 | 2014-04-16 | 四川苏克流体控制设备有限公司 | Ball valve with single-valve-seat bidirectional sealing structure |
| CN203926881U (en) * | 2014-06-16 | 2014-11-05 | 科普蓝(上海)阀门工业有限公司 | single valve seat ball valve |
| CN204942690U (en) * | 2015-09-15 | 2016-01-06 | 上海电气阀门有限公司 | A kind of roof-mounted fixing ball valve made a concession without the need to valve seat |
-
2015
- 2015-09-15 CN CN201510585912.4A patent/CN105090590A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2375829Y (en) * | 1999-06-01 | 2000-04-26 | 杨永祥 | Ball valve |
| CN201348060Y (en) * | 2008-12-22 | 2009-11-18 | 凯泰阀门(集团)有限公司 | Pulverized coal injection ball valve |
| US20110168934A1 (en) * | 2010-01-11 | 2011-07-14 | Greg Sisk | Ball valve for a tank trailer |
| CN203548978U (en) * | 2013-11-29 | 2014-04-16 | 四川苏克流体控制设备有限公司 | Ball valve with single-valve-seat bidirectional sealing structure |
| CN203926881U (en) * | 2014-06-16 | 2014-11-05 | 科普蓝(上海)阀门工业有限公司 | single valve seat ball valve |
| CN204942690U (en) * | 2015-09-15 | 2016-01-06 | 上海电气阀门有限公司 | A kind of roof-mounted fixing ball valve made a concession without the need to valve seat |
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Application publication date: 20151125 |