CN201715020U - Abrasion auto-compensation sealed ball valve - Google Patents
Abrasion auto-compensation sealed ball valve Download PDFInfo
- Publication number
- CN201715020U CN201715020U CN2010202708106U CN201020270810U CN201715020U CN 201715020 U CN201715020 U CN 201715020U CN 2010202708106 U CN2010202708106 U CN 2010202708106U CN 201020270810 U CN201020270810 U CN 201020270810U CN 201715020 U CN201715020 U CN 201715020U
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- described valve
- ball seat
- 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.)
- Expired - Fee Related
Links
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model relates to an abrasion auto-compensation sealed ball valve comprising a valve body, a valve deck, a valve rod and a valve ball; the valve rod is connected with a driving device and the valve rod is provided with a partial pressure member imposing partial pressure on the valve cavity of the valve ball; the valve cavity of the valve body is provided with two valve cavity inclined slopes at both ends of a communicative medium. The inclined slops gradually incline to the ball valve from the upper part of the ball seat to the lower part of the ball seat. When the ball valve is opened, the medium channel crosses through the valve ball to form a valve ball inclined slope in parallel to the valve cavity inclined slopes. The pre-tightening force on the valve ball, valve seat and the valve cavity is under the influence not only of their own gravities, but also of the partial pressure member arranged between the upper part of the valve ball and the valve rod; under the influence of the partial pressure member, the ball seat is maintained in a sealed state or in a continuous pre-tightening sealed state; when the ball seat or the valve ball is abrades, the partial pressure member makes compensations to the corresponding positions so as to maintain the ball valve sealed when the working condition is closed, thereby prolonging the service lifetime of the ball valve.
Description
Technical field
The utility model relates to a kind of ball valve, relates in particular to a kind of nuclear safe level ball valve that can realize automatic compensation sealing after wearing and tearing that can be applicable to nuclear power plant.
Background technique
Along with the development of new energy, the application of nuclear power technology more and more widely.In nuclear power station, higher than traditional heat power station to the security requirement of valve.Nuclear three-grade electric ball valve is the valve that is applicable under the nuclear power station special operation condition, be used in the pipeline of nuclear power plant's one circuit auxiliary system, and be installed in outside the containment, work to connect and cut off the pipeline medium, the Safety function of executive system guarantees that pipe-line system moves normally or slow down damage sequence.
Described nuclear three-grade electric ball valve drives the valve rod rotation by Electric actuator, valve rod drives valve ball again and is rotated, thereby realize the opening and closing of valve, from its annexation, the sealability of ball valve depends on the sealing between ball seat and the valve ball to a great extent.When reality is used, along with the ball valve passing of service time, valve ball and ball seat can produce wearing and tearing in various degree inevitably, valve ball after the wearing and tearing just can't be implemented in ball valve when opening to the sealing of medium, medium will influence the sealability of ball valve from the slit internal leakage between valve ball and the ball seat so.
In the prior art, Chinese patent literature CN2644807Y provides a kind of moveable core type ball valve, comprises valve body and two ball seats, and two ball seats place in the valve body and clamping has the valve ball of being with longitudinal hole, the valve ball upper end is provided with valve rod, is with the adjustment spring on the valve rod between described valve ball and the valve gap.Ball valve has been realized the unsteady adjustable of valve ball in the described valve body by described adjustment spring is set in this technology, like this when valve ball because of wearing and tearing or during corrosion and damage, valve ball can automatically adjust under the effect of described adjustment spring, traditional spheroid that is shaped as owing to valve ball, valve ball after the wearing and tearing can be under the downward equilibrant force effect that the adjustment spring applies valve ball, it is moved until contacting with the ball seat that is positioned at the bottom towards the valve body bottom, realize the sealing of valve ball the ball seat bottom.But, because ball seat is owing to be subjected to the restriction of valve body, the position can't move down, thereby the valve ball after the wearing and tearing just can't seal the ball seat upper end, thereby the leakage slit occurs, when ball valve was opened, medium will leak via described leakage slit like this, have a strong impact on the sealing of ball valve, also caused the potential safety hazard of nuclear power station.
The model utility content
Though technical problem to be solved in the utility model is a ball valve of the prior art to be provided with and to adjust valve ball and the ball seat of spring after to described wearing and tearing and carry out sealing compensation, but because it adopts is the restriction that traditional spheroid and ball seat position are subjected to valve body, can only realize compensation sealing to the ball seat bottom, and compensation sealing when can't realize, and then provide a kind of ball valve that can be after valve ball and ball seat wearing and tearing simultaneously ball seat bottom and upper end be compensated sealing to ball seat bottom and upper end.
For this reason, the technological scheme that the utility model adopted is: a kind of ball valve of the back automatic compensation sealing that realizes wearing and tearing comprises valve body, is installed on the valve gap of described valve body upper end; Form the valve pocket that is used to hold described valve ball in the described valve body; Be provided with the valve rod that runs through described valve gap in described valve body, described valve rod is connected with drive unit, is connected with valve ball in described valve rod lower end; On described valve rod, also be provided with described valve ball is applied biasing force parts towards the biasing force of described valve pocket; In described valve pocket, be provided with the ball seat that is used to seal described valve body and valve ball between described valve ball and the described valve body; Described valve pocket forms a valve pocket inclined-plane respectively in the two side ends of conducting medium, and described valve pocket inclined-plane tilts towards described valve ball to the ball seat lower end gradually from described ball seat upper end; Described ball valve is when opening state, and the valve ball inclined-plane that medium channel runs through described valve ball formation is parallel to described valve pocket inclined-plane.
In the described valve ball sealing part that contacts with described ball seat upper end, form one with the boss of described ball seat upper end towards described valve ball one side engagement slip.
Described boss and described ball seat upper end are chamfering towards described valve ball one side touching position.
Described chamfering is a rounded corner.
Described biasing force parts are spring, and described spring housing is connected on the described valve rod and with described valve ball and is connected.
Described valve pocket is provided with at least one projection that is positioned at described ball seat lower end, the extreme lower position after described projection is used to limit described ball seat and described valve ball integral body and moves down.
Described projection is two, takes shape in the bottom of described valve pocket in the two side ends of conducting medium respectively.
Described projection takes shape in the bottom of described valve body, and is positioned on the vertical center line of described valve ball.
Described drive unit is an Electric actuator.
Be provided with spiral wound gasket and O RunddichtringO between described valve body and the valve gap; Be provided with spiral wound gasket and O RunddichtringO between described valve rod and the valve gap.
Compared to existing technology, the utlity model has following beneficial effect:
(1) ball valve described in the utility model, on the ball valve technical foundation of prior art, to valve pocket valve pocket inclined-plane of two side ends difference moulding at the conducting medium, medium channel off-centre runs through valve ball, when ball valve is in opening state, the valve ball inclined-plane that medium channel runs through described valve ball formation is parallel to described valve pocket inclined-plane, makes valve ball and ball seat have good self fastening function as a whole in valve pocket.
Pretightening force between valve ball, ball seat and the valve pocket is except that being subjected to valve ball and the effect of ball seat self gravitation, also be subjected to the continuous action of biasing force parts, under the effect of biasing force parts, can keep the ball seat sealing pair to continue pre-tightening seal, especially when low pressure high hardness sealing material, more obvious.
Of paramount importancely be, valve in use for some time, valve ball or ball seat can produce certain wearing and tearing because of mutual kinetic friction, gap between valve ball and the valve pocket increases, and ball seat and valve ball will move down under the effect of self gravitation and biasing force parts as a whole in real time, reduce the gap with valve pocket, give wearing part corresponding compensation within the specific limits, to keep original seal action, guarantee the reliable sealing of valve when work condition state is closed, thereby increase the service life.
(2) in the described valve ball sealing part that contacts with described ball seat upper end, form a boss that slides towards described valve ball one side engagement with described ball seat upper end, thereby make that effective applying scope of ball seat upper end and valve ball is bigger.Especially only cause valve ball when moving down because of wearing and tearing appear in ball valve, still can effectively guarantee fitting tightly of ball seat upper end and valve ball boss place.
(3) valve pocket is provided with at least one projection that is positioned at described ball seat lower end, the extreme lower position after described projection is used to limit described ball seat and described valve ball integral body and moves down.Because the ball seat influence of being expanded with heat and contract with cold, meet that ball seat shrinks when cold, cause the gap between valve pocket, ball seat and the valve ball to increase, ball seat and valve ball descend along the inclined-plane of valve pocket; Otherwise, when if ball seat is met thermal expansion, gap between valve pocket, ball seat and the valve ball reduces, and ball seat and valve ball are when being in lower position, frictional force between valve pocket, ball seat and the valve ball is very big, this just need be provided with the extreme lower position that projection limits ball seat, avoids it to fall to lower position because of expanding with heat and contract with cold, and causes valve normally to open and close.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a structural representation of the present utility model.
Be labeled as among the figure: 1-ball seat, 2-valve body, 3-valve ball, 4-valve rod, 5-valve gap, 6-drive unit, 7-projection, 8-biasing force parts, 9-boss.
Embodiment
Embodiment 1
In conjunction with shown in Figure 1, the ball valve in the present embodiment comprises valve body 2, is installed on the valve gap 5 of described valve body 2 upper ends; Be provided with the valve rod 4 that runs through described valve gap 5 in described valve body 2, described valve rod 4 is connected with drive unit 6, and described drive unit 6 is an Electric actuator, is connected with valve ball 3 in described valve rod 4 lower ends; Also be provided with on described valve rod 4 described valve ball 3 is applied biasing force parts 8 towards the biasing force of described valve ball 3, described biasing force parts 8 are spring, and described spring housing is connected on the described valve rod 4 and with described valve ball 3 and is connected.Form the valve pocket that is used to hold described valve ball 3 in the described valve body 2, in described valve pocket, be provided with the ball seat 1 that is used to seal described valve body 2 and valve ball 3 between described valve ball 3 and the described valve body 2.
Described valve pocket forms a valve pocket inclined-plane respectively in the two side ends of conducting medium, described valve pocket inclined-plane from described ball seat upper end 11 to ball seat lower end 10 gradually towards described valve ball 3 inclinations; Described ball valve is when opening state, and the valve ball inclined-plane that medium channel runs through described valve ball 3 formation is parallel to described valve pocket inclined-plane.
During work, Electric actuator drives valve rod 4 rotations, and valve rod 4 drives valve ball 3 rotations to realize the opening and closing of valve.When ball seat 1 or valve ball 3 appearance wearing and tearing, it is big that gap between ball seat 1, valve ball 3 and the valve pocket becomes, ball seat 1 and valve ball 3 do as a whole under the pressure of self gravitation and spring voluntarily to bottom offset, dwindle the gap between ball seat 1, valve ball 3 and the valve pocket, carry out corresponding compensation within the specific limits for wearing part, to reach original seal action, guarantee the valve excellent sealing performance.
Embodiment 2
Ball valve described in the utility model can also be on the basis of embodiment's 1 described valve ball 3, in described valve ball 3 sealing part that contacts with described ball seat upper end 11, the boss 9 that slide towards described valve ball 3 one sides engagement in one of moulding and described ball seat upper end 11, described boss 9 and described ball seat upper end 11 are chamfering towards described valve ball 3 one side touching positions.Boss 9 being set making ball seat upper end 11 bigger with effective applying scope of valve ball 3, especially ought only be that valve ball 3 wearing and tearing occur and ball seat 1 is not worn, and when valve ball 3 moves down, still can effectively guarantee fitting tightly of ball seat upper end 11 and valve ball 3.
As mode of execution that can conversion, ball valve described in the utility model can also be provided with one or more projection 7 in described ball seat lower end 10, described protruding 7 be provided for limiting described ball seat 1 extreme lower position.Described protruding 7 can be provided with two, take shape in the bottom of described valve pocket in the two side ends of conducting medium respectively; Perhaps described protruding 7 take shape in the bottom of described valve body 2, and are positioned on the vertical center line of described valve ball 3.Be provided with spiral wound gasket and O RunddichtringO between described valve body 2 and the valve gap 5 and between valve rod 4 and the valve gap 5.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. ball valve of back automatic compensation sealing of can realizing wearing and tearing comprises valve body (2), is installed on the valve gap (5) of described valve body (2) upper end;
Described valve body forms the valve pocket that is used to hold described valve ball (3) in (2), in described valve body (2), be provided with the valve rod (4) that runs through described valve gap (5), described valve rod (4) is connected with drive unit (6), is connected with valve ball (3) in described valve rod (4) lower end; On described valve rod (4), also be provided with described valve ball (3) is applied biasing force parts (8) towards the biasing force of described valve pocket;
In described valve pocket, be provided with the ball seat (1) that is used to seal described valve body (2) and valve ball (3) between described valve ball (3) and the described valve body (2);
It is characterized in that: described valve pocket forms a valve pocket inclined-plane respectively in the two side ends of conducting medium, and described valve pocket inclined-plane tilts towards described valve ball (3) gradually from described ball seat upper end (11) to ball seat lower end (10); Described ball valve is when opening state, and the valve ball inclined-plane that medium channel runs through described valve ball (3) formation is parallel to described valve pocket inclined-plane.
2. ball valve according to claim 1 is characterized in that: in described valve ball (3) sealing part that contacts with described ball seat upper end (11), form one with the boss (9) of described ball seat upper end (11) towards described valve ball (3) one sides engagement slip.
3. ball valve according to claim 2 is characterized in that: described boss (9) is chamfering with described ball seat upper end (11) towards described valve ball (3) one side touching positions.
4. ball valve according to claim 3 is characterized in that: described chamfering is a rounded corner.
5. according to claim 1 or 2 or 3 described ball valves, it is characterized in that: described biasing force parts (8) are spring, and described spring housing is connected to described valve rod (4) and upward and with described valve ball (3) is connected.
6. according to claim 1 or 2 or 3 described ball valves, it is characterized in that: described valve pocket is provided with at least one projection (7) that is positioned at described ball seat lower end (10), the extreme lower position after described projection (7) is used to limit described ball seat (1) and described valve ball (3) integral body and moves down.
7. ball valve according to claim 6 is characterized in that: described projection (7) is two, takes shape in the bottom of described valve pocket in the two side ends of conducting medium respectively.
8. ball valve according to claim 6 is characterized in that: described projection (7) takes shape in the bottom of described valve body (2), and is positioned on the vertical center line of described valve ball (3).
9. ball valve according to claim 6 is characterized in that: described drive unit (6) is an Electric actuator.
10. ball valve according to claim 1 and 2 is characterized in that: be provided with spiral wound gasket and O RunddichtringO between described valve body (2) and the valve gap (5); Be provided with spiral wound gasket and O RunddichtringO between described valve rod (4) and the valve gap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202708106U CN201715020U (en) | 2010-07-26 | 2010-07-26 | Abrasion auto-compensation sealed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202708106U CN201715020U (en) | 2010-07-26 | 2010-07-26 | Abrasion auto-compensation sealed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715020U true CN201715020U (en) | 2011-01-19 |
Family
ID=43461016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202708106U Expired - Fee Related CN201715020U (en) | 2010-07-26 | 2010-07-26 | Abrasion auto-compensation sealed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285230A (en) * | 2019-07-18 | 2019-09-27 | 欧维克集团有限公司 | A kind of high safety die forging ball valve |
-
2010
- 2010-07-26 CN CN2010202708106U patent/CN201715020U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285230A (en) * | 2019-07-18 | 2019-09-27 | 欧维克集团有限公司 | A kind of high safety die forging ball valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202520983U (en) | Opening valve seat type ball valve | |
| CN202371196U (en) | Flat-plate gate valve | |
| CN201715020U (en) | Abrasion auto-compensation sealed ball valve | |
| CN102278495A (en) | spring balance type plug valve | |
| CN209925659U (en) | Manual oil field flat gate valve with double sealing structure | |
| CN201705982U (en) | High-temperature wear-resistant ball valve | |
| CN203963075U (en) | A kind of complex spring connects Wedge type double gate board gate valve | |
| CN203442188U (en) | Wear-resistant expanding parallel double-gate-disc gate valve | |
| CN202790630U (en) | Dedicated locking hopper cutting valve for coal chemical industry | |
| CN202790658U (en) | Valve seat of fixed ball valve | |
| CN205401805U (en) | Double track way groove ball valve sealed firmly | |
| CN101915319B (en) | Parallel double-supporting plate gate valve | |
| CN202048227U (en) | Gate valve | |
| CN204610917U (en) | Forged steel pipeline soft seal plate valve | |
| CN214789143U (en) | Metal elastic sheet sealing low-temperature ball valve | |
| CN107917205A (en) | A kind of soft seal three-eccentric-butterfly-valve | |
| CN208935427U (en) | A kind of gate valve with fire proof construction | |
| CN210484654U (en) | Threaded connection gate valve copper valve body | |
| CN203488723U (en) | Fluid stop valve | |
| CN203627859U (en) | High-temperature-resistant and abrasion-resistant CTL (coal-to-liquids) special valve | |
| CN205504062U (en) | Ball valve fire resistive construction | |
| CN201763984U (en) | Parallel double supporting plate gate valve | |
| CN201531641U (en) | Combined sealing stationary type bullet valve | |
| CN201687976U (en) | Spring balance type plug valve | |
| CN204004503U (en) | A kind of long-distance transport pipes plate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110119 Termination date: 20150726 |
|
| EXPY | Termination of patent right or utility model |