CN109854774A - Three eccentricity seals c-type ball valve firmly - Google Patents
Three eccentricity seals c-type ball valve firmly Download PDFInfo
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- CN109854774A CN109854774A CN201811637956.7A CN201811637956A CN109854774A CN 109854774 A CN109854774 A CN 109854774A CN 201811637956 A CN201811637956 A CN 201811637956A CN 109854774 A CN109854774 A CN 109854774A
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Abstract
The present invention provides three eccentricities to seal c-type ball valve, including valve body, valve deck, valve seat, upper valve rod, lower valve shaft and c-type sphere firmly, and valve body is equipped with upper shaft hole and lower shaft hole, and upper valve rod is arranged in upper shaft hole, and lower valve shaft is arranged in lower shaft hole；The spherical surface of c-type sphere is equipped with boss and seal groove, and ball seal circle is equipped in seal groove, is equipped with spherical seal ring in boss；Valve deck is equipped with the valve seat culvert and valve base sealing slot coaxial with valve deck passage axis, is equipped with valve seat insert in valve base sealing slot, valve seat is embedded in valve seat culvert；The bias amount of c-type sphere axis of rotation and hemisphere sealing surface is A, and the bias amount of c-type sphere axis of rotation and valve channel axis is B；The present invention can reach zero leakage, and manufacturing cost is low, long service life.
Description
Technical field
The present invention relates to ball valves, in particular to use full-bore and the side-mounted structure of seal assembly, are used for long-distance transport pipes
The three eccentricity of system seals c-type ball valve firmly.
Background technique
Side-mounted c-type ball valve is widely used on oil and natural gas pipeline, and oil recovery, oil refining, petrochemical industry, chemical industry, chemical fibre,
In the devices such as metallurgy, electric power, nuclear power and papermaking.The sealing pair of side-mounted c-type ball valve carries out replacement.
Existing side-mounted ball valve is generally made of medium channel, seal combination sphere, the bearing of upper lower valve rod, worm gear case,
For the seal assembly of such ball valve from when 0~90 ° of unlatching, it is close that the sealing surface of seal assembly can be detached from immediately valve seat in the moment of unlatching
Cover, in its 90 °~0 ° closing, its seal assembly sealing surface of moment only closed can just contact and compress valve base sealing
Face enhances sealing performance, increases the service life of valve.
Summary of the invention
The technical problem to be solved in the present invention is to provide one kind during the work time, is able to achieve full-bore or undergauge, flow resistance
Coefficient is small, and open and close torque is light, improves the leakage class of graininess and liquid, gas class Combination medium, that is, can reach zero leakage, system
Make at low cost, three eccentricity with long service life seals c-type ball valve firmly.
In order to achieve the above objectives, technical scheme is as follows:
Three eccentricity seals c-type ball valve, including valve body, valve deck, valve seat, upper valve rod, lower valve shaft and c-type sphere, valve body firmly
It is equipped with upper shaft hole and lower shaft hole, upper valve rod is arranged in upper shaft hole, and lower valve shaft is arranged in lower shaft hole；The c-type sphere
Spherical surface is equipped with boss and seal groove, and ball seal circle is equipped in seal groove, is equipped with spherical seal ring in boss, seal groove is located at
Boss bottom, boss are fixed by screws on c-type sphere；
Valve deck is equipped with the valve seat culvert and valve base sealing slot coaxial with valve deck passage axis, and valve seat, which is contained, is located at valve base sealing slot
Bottom, valve base sealing slot is interior to be equipped with valve seat insert, and valve seat is embedded in valve seat and contains interior and valve seat is marked mouth and bonnet central line
To using the tightening of valve seat positioning pin thereafter, then with screw-driving valve seat；
The bias amount of c-type sphere axis of rotation and hemisphere sealing surface is A, c-type sphere axis of rotation and valve channel axis
Bias amount be B, valve seat axis of rotation and valve channel axis form angle beta；
For c-type sphere from when 0~90 ° of unlatching, the sealing surface of c-type sphere can be detached from immediately valve base sealing in the moment of unlatching
Face, in its 90 °~0 ° closing, its butterfly plate sealing surface of moment only closed can just contact and compress sealing surface of seat.
In one embodiment of the invention, the top of c-type sphere is equipped on an axis of rotation vertical with passage axis
The rectangular channel of side, the rectangular head of upper valve rod lower end, which is inserted into rectangular channel, to be attached thereto；The lower section of c-type sphere is equipped with one and channel
Lower shaft hole below the vertical axis of rotation of axis, the top of lower valve shaft, which is inserted into lower shaft hole, supports c-type sphere.
In one embodiment of the invention, the range of bias amount A is 3mm~100mm, the range of bias amount B be 3mm~
15mm, the range of angle beta are 2 °~20 °.
Through the above technical solutions, the beneficial effects of the present invention are:
The present invention solves the zero leakage that hard seal ball valve in the prior art is extremely difficult to, and reduces opening and closing torque, section
The about energy, reliability, feasibility, economy is all significantly improved, and benefit can be good.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is c-type sphere structure schematic diagram of the invention；
Fig. 3 is valve seat of the invention and valve deck scheme of installation；
Fig. 4 is eccentric structure schematic diagram of the invention；
Fig. 5 is principle of start-stop schematic diagram of the invention；
Fig. 6 is the working principle of the invention schematic diagram；
10, valve body 11, upper shaft hole 12, lower shaft hole 20, valve deck 21, valve seat contain 22, valve base sealing slot 23, valve seat insert
24, valve seat positioning pin 25, screw 30, valve seat 40, upper valve rod 50, lower valve shaft 60, c-type sphere 61, rectangular channel 62, lower shaft hole 63,
Boss 64, seal groove 65, ball seal circle 66, spherical seal ring 67, screw.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to shown in Fig. 1 to Fig. 6, the invention discloses three eccentricities to seal c-type ball valve, including valve body 10, valve deck 20, valve firmly
Seat 30, upper valve rod 40, lower valve shaft 50 and c-type sphere 60, valve body 10 are equipped with upper shaft hole 11 and lower shaft hole 12, and upper valve rod 40 is set
It sets in upper shaft hole 11, lower valve shaft 50 is arranged in lower shaft hole 12, and rotation upper valve rod 40 drives c-type sphere 60 around 40 axis of upper valve rod
Line is rotated by 90 °, so that combination sphere sealing surface is fitted closely with sealing surface of seat.
The top of c-type sphere 60 is equipped with the rectangular channel 61 above an axis of rotation vertical with passage axis, upper valve rod 40
It is attached thereto in the rectangular head insertion rectangular channel 61 of lower end；The lower section of c-type sphere 60 is equipped with a time vertical with passage axis
Lower shaft hole 62 below shaft axis, the top of lower valve shaft 50, which is inserted into lower shaft hole 62, supports c-type sphere 60.
The spherical surface of c-type sphere 60 is equipped with boss 63 and seal groove 64, is equipped with ball seal circle 65, boss in seal groove 64
Spherical seal ring 66 is equipped in 63, seal groove 64 is located at 63 bottom of boss, and boss 63 is fixed on c-type sphere 60 by screw 67
On.
Valve deck 20, which is equipped with, contains 21 and valve base sealing slot 22 with the coaxial valve seat of valve deck passage axis, and valve seat contains 21 and is located at valve
Seat seal groove 22 bottom, is equipped with valve seat insert 23 in valve base sealing slot 22, and valve seat 20 is embedded in valve seat and contains in 21 and by valve seat
Mouth and bonnet central line is marked to tighten valve seat 30 to using 24 tightening of valve seat positioning pin thereafter, then with screw 25.
The bias amount of c-type sphere axis of rotation and hemisphere sealing surface is A, and the range of bias amount A is 3mm~100mm, c-type
The bias amount of sphere axis of rotation and valve channel axis is B, and the range of bias amount B is 3mm~15mm, valve seat axis of rotation with
Valve channel axis forms angle beta, and the range of angle beta is 2 °~20 °.
When c-type ball valve is completely in open state, c-type ball seal face can completely disengage sealing surface of seat, and in C
Gap delta is formed between type ball seal face and sealing surface of seat, gap delta is passive size, by bias amount A, bias amount B and angle
β influences.
On the large and small semicircle of butterfly plate that can make long and short radius rotation due to the formation of the angle β biasing, the rotation of c-type ball seal face
The tangent line and sealing surface of seat of track form a θ1Angle and θ2Angle, θ1Angle and θ2Angle is passive size, by the shadow of valve opening
It rings.
When the c-type ball valve opening and closing that above-mentioned angle makes, c-type ball seal face opposite valve seat sealing surface gradually goes out to be detached from and be fade-in pressure
Tightly, to completely eliminate the mechanical wear and scratch when butterfly valve opens and closes between two sealing surface of butterfly valve.
At work, for c-type sphere from when 0~90 ° of unlatching, the sealing surface of c-type sphere can be vertical in the moment of unlatching by the present invention
It is detached from sealing surface of seat, in its 90 °~0 ° closing, its butterfly plate sealing surface of moment only closed can just contact and compress valve
Seat sealing surface.
Due to θ1Angle and θ2The formation at angle, when closing c-type sphere, seal pressure between two sealing surface of sealing pair by
It is generated applied to the driving moment of valve rod；Not only eliminate conventional hard seal ball valve because the aging of elastic seat elastic material, cold flow,
Seal pressure between two sealing surface of sealing pair caused by the factors such as elastic failure is reduced and is disappeared, and can pass through additional driving
The change of torque realizes that any adjustment to its seal pressure makes so that making the sealing performance of three eccentricity sealed butterfly valve improves
With service life big raising.
The range that the present invention is covered is: specification 4 " (DN100)~24 " (DN600), pressure: 150LB~600LB
(2.0MPa~10.0MPa), this product are suitable for the industries such as natural gas, oil product, chemical industry, metallurgy, pharmacy, as opening and closing pipeline stream
Body device is used.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. three eccentricity seals c-type ball valve, including valve body, valve deck, valve seat, upper valve rod, lower valve shaft and c-type sphere firmly, on valve body
Equipped with upper shaft hole and lower shaft hole, upper valve rod is arranged in upper shaft hole, and lower valve shaft is arranged in lower shaft hole；It is characterized in that, the C
The spherical surface of type sphere is equipped with boss and seal groove, and ball seal circle is equipped in seal groove, and spherical seal ring is equipped in boss, close
Sealing groove is located at boss bottom, and boss is fixed by screws on c-type sphere；
Valve deck is equipped with the valve seat culvert and valve base sealing slot coaxial with valve deck passage axis, and valve seat, which is contained, is located at valve base sealing slot bottom
Portion, valve base sealing slot is interior to be equipped with valve seat insert, and valve seat is embedded in valve seat and contains interior and valve seat is marked mouth and bonnet central line pair
Thereafter the tightening of valve seat positioning pin is used, then with screw-driving valve seat；
The bias amount of c-type sphere axis of rotation and hemisphere sealing surface is A, and c-type sphere axis of rotation is inclined with valve channel axis
Value amount is B, and valve seat axis of rotation and valve channel axis form angle beta；
For c-type sphere from when 0~90 ° of unlatching, the sealing surface of c-type sphere can be detached from immediately sealing surface of seat in the moment of unlatching,
When its 90 °~0 ° closing, its butterfly plate sealing surface of moment only closed can just contact and compress sealing surface of seat.
2. three eccentricity according to claim 1 seals c-type ball valve firmly, which is characterized in that the top of c-type sphere be equipped with one with
Rectangular channel above the vertical axis of rotation of passage axis, the rectangular head of upper valve rod lower end, which is inserted into rectangular channel, to be attached thereto；C
The lower section of type sphere is equipped with the lower shaft hole below an axis of rotation vertical with passage axis, and lower shaft hole is inserted at the top of lower valve shaft
In support c-type sphere.
3. three eccentricity according to claim 1 seals c-type ball valve firmly, which is characterized in that the range of bias amount A be 3mm~
The range of 100mm, bias amount B are 3mm~15mm, and the range of angle beta is 2 °~20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637956.7A CN109854774A (en) | 2018-12-29 | 2018-12-29 | Three eccentricity seals c-type ball valve firmly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811637956.7A CN109854774A (en) | 2018-12-29 | 2018-12-29 | Three eccentricity seals c-type ball valve firmly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109854774A true CN109854774A (en) | 2019-06-07 |
Family
ID=66893281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811637956.7A Pending CN109854774A (en) | 2018-12-29 | 2018-12-29 | Three eccentricity seals c-type ball valve firmly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109854774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410521A (en) * | 2019-08-27 | 2019-11-05 | 江苏江恒阀业有限公司 | A kind of tubular full-bore three eccentricity high-pressure anti-wear ball valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3818805A1 (en) * | 1988-06-03 | 1989-12-14 | P & W Regelsysteme Gmbh | Regulating and shut-off device for flowing media, especially rotary cone valve |
| CN201875176U (en) * | 2010-03-29 | 2011-06-22 | 上海美科阀门有限公司 | Novel spherical ball valve |
| CN201891909U (en) * | 2010-11-30 | 2011-07-06 | 湖南品川技术发展有限公司 | Connecting structure between electromagnetic valve body and valve seat |
| JP2011144861A (en) * | 2010-01-14 | 2011-07-28 | Denso Corp | Ball valve |
| CN203009893U (en) * | 2012-12-19 | 2013-06-19 | 武汉大禹阀门股份有限公司 | Eccentric semi-ball valve |
| CN207621412U (en) * | 2017-12-07 | 2018-07-17 | 阿伐流体控制有限公司 | A kind of three eccentricity high-performance c-type ball valve |
| CN207961583U (en) * | 2017-12-01 | 2018-10-12 | 湖北高中压阀门有限责任公司 | A kind of wear-resisting semisphere valve of large scale sealed with disc spring and tandem compound |
-
2018
- 2018-12-29 CN CN201811637956.7A patent/CN109854774A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3818805A1 (en) * | 1988-06-03 | 1989-12-14 | P & W Regelsysteme Gmbh | Regulating and shut-off device for flowing media, especially rotary cone valve |
| JP2011144861A (en) * | 2010-01-14 | 2011-07-28 | Denso Corp | Ball valve |
| CN201875176U (en) * | 2010-03-29 | 2011-06-22 | 上海美科阀门有限公司 | Novel spherical ball valve |
| CN201891909U (en) * | 2010-11-30 | 2011-07-06 | 湖南品川技术发展有限公司 | Connecting structure between electromagnetic valve body and valve seat |
| CN203009893U (en) * | 2012-12-19 | 2013-06-19 | 武汉大禹阀门股份有限公司 | Eccentric semi-ball valve |
| CN207961583U (en) * | 2017-12-01 | 2018-10-12 | 湖北高中压阀门有限责任公司 | A kind of wear-resisting semisphere valve of large scale sealed with disc spring and tandem compound |
| CN207621412U (en) * | 2017-12-07 | 2018-07-17 | 阿伐流体控制有限公司 | A kind of three eccentricity high-performance c-type ball valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110410521A (en) * | 2019-08-27 | 2019-11-05 | 江苏江恒阀业有限公司 | A kind of tubular full-bore three eccentricity high-pressure anti-wear ball valve |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190607 |
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| RJ01 | Rejection of invention patent application after publication |