CN106763822A - A kind of four eccentric-butterfly-valves - Google Patents
A kind of four eccentric-butterfly-valves Download PDFInfo
- Publication number
- CN106763822A CN106763822A CN201611153641.6A CN201611153641A CN106763822A CN 106763822 A CN106763822 A CN 106763822A CN 201611153641 A CN201611153641 A CN 201611153641A CN 106763822 A CN106763822 A CN 106763822A
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly
- eccentric
- sealing surface
- plate
- 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
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Details Of Valves (AREA)
Abstract
The present invention provides a kind of four eccentric-butterfly-valve, including valve body, multi-layer sealing ring, butterfly plate, valve shaft, pressing plate and valve seat.Wherein four bias are specially：Eccentric throw d between the rotation centerline of butterfly plate and the neutral surface of valve seat；Eccentric distance e between the rotation centerline and valve flowing channel center line of butterfly plate；The axis of annular sealing surface forms angle α with valve flowing channel center line in plane I；Angle δ is formed between the axis and plane I of annular sealing surface.4th bias δ, change the shape of sealing surface, so that in the same position of sealing surface, the sealing surface taper of four eccentric-butterfly-valves is different from three-eccentric-butterfly-valve sealing surface taper, and its sealing has been upset under small guide vane, the flowing of fluid, increase flow resistance, flow is reduced, so as to reduce the changes in flow rate amount of turn-off transient, " water hammer " phenomenon is alleviated.
Description
Technical field
The invention belongs to butterfly valve field, and in particular to a kind of four eccentric-butterfly-valve.
Background technology
Existing three-eccentric-butterfly-valve is when closed, existing with serious " water hammer " due to its " wink opens ", the characteristic of " wink pass "
As；When using air control unit, even more need to configure corresponding hydraulic damping device and eliminated, increased the complexity of butterfly valve
Property and use cost.
For serious " water hammer " phenomenon for mitigating three-eccentric-butterfly-valve " along opening ", " along closing " is brought, remove three eccentricity butterfly
The hydraulic damping device of additional configurations when valve is used, simplifies structure, cost-effective, it is proposed that a kind of four eccentric-butterfly-valves structure.It is existing
Four eccentric-butterfly-valves of design are directed to different problems and are solved at present, and " water hammer " phenomenon is not solved；And wherein
The 4th bias that some four eccentric-butterfly-valves are proposed has existed in three-eccentric-butterfly-valve structure, is simply not known and illustrates,
Its structure does not change substantially.Therefore, existing technology does not solve " water hammer " phenomenon of three eccentricity.
The content of the invention
The purpose of the present invention be mitigate three-eccentric-butterfly-valve " along open ", serious " water hammer " phenomenon that " along closing " is brought, from
And save the hydraulic damping device of attached configuration when three-eccentric-butterfly-valve is used.
The technical scheme used to realize the object of the invention is a kind of such, four eccentric-butterfly-valve, including valve body, multilayer
Secondary sealing ring, butterfly plate, valve shaft, pressing plate, valve seat and end cap.The valve body has a valve flowing channel, and the butterfly plate is arranged on valve
In runner.There is eccentric distance e between the rotation centerline and valve flowing channel center line of the butterfly plate.The pressing plate will be multi-level close
Seal is pressed on the side of butterfly plate.The pressing plate is fixedly connected by bolt with butterfly plate.The valve shaft is connected by key and alignment pin
It is connected on the opposite side of butterfly plate.
The valve seat is fixed in valve body by end cap.Deposited between the rotation centerline of the butterfly plate and the neutral surface of valve seat
In eccentric throw d.The inner surface of the valve seat is engaged with the outer surface of multi-layer sealing ring, so as to be formed with tapered annular
Sealing surface.The axis of the annular sealing surface forms angle α with valve flowing channel center line in plane I.The plane I is valve body
Symmetrical plane, and plane I is vertical with the axis of valve shaft.Angle δ is formed between the axis and plane I of the annular sealing surface.
Further, the side center of the butterfly plate has boss, and opposite side center has groove.Open at the center of the pressing plate
There is the through hole being engaged with boss.Space is formed between the valve shaft and groove.
Further, the multi-layer sealing ring is by the alternate combination of the hard sealing ring of three-layer metal and two-layer graphite soft seal circle
Into.
Further, flexible gaskets are additionally provided between the multi-layer sealing ring and butterfly plate.The multi-layer sealing ring leads to
The crimp for crossing flexible gaskets produces displacement.
Further, it is a part for pyramid side with tapered annular sealing surface, its cross section is ellipse.
The solution have the advantages that unquestionable.4th bias δ of four eccentric-butterfly-valves, changes the shape of sealing surface
Shape so that in the same position of sealing surface, the sealing surface taper of four eccentric-butterfly-valves is different from three-eccentric-butterfly-valve sealing surface taper, its
Sealing has been upset under small guide vane, and the flowing of fluid increases flow resistance, reduces flow, so as to reduce the flow of turn-off transient
Variable quantity, alleviates " water hammer " phenomenon.
Brief description of the drawings
Fig. 1 is the sectional view of four eccentric-butterfly-valve of the invention；
Fig. 2 is the left view of four eccentric-butterfly-valve of the invention；
Fig. 3 is the left view of three-eccentric-butterfly-valve；
Fig. 4 is the projection comparison diagram of three-eccentric-butterfly-valve and four eccentric-butterfly-valve sealing surfaces；
Fig. 5 is the motion pattern under 10 ° of apertures of three-eccentric-butterfly-valve；
Fig. 6 is the motion pattern under four eccentric-butterfly-valves, 10 ° of apertures.
In figure：Valve body 1, multi-layer sealing ring 2, connecting bolt 3, butterfly plate 4, valve shaft 5, pressing plate 6, flexible gaskets 7, valve seat 8,
End cap 9, bolt of cover 10.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples, but should not be construed above-mentioned theme of the invention
Scope is only limitted to following embodiments.Without departing from the idea case in the present invention described above, known according to ordinary skill
Know and customary means, make various replacements and change, all should include within the scope of the present invention.
Embodiment 1：
Referring to Fig. 1 and Fig. 2, the present embodiment provides a kind of four eccentric-butterfly-valve, mainly include valve body 1, multi-layer sealing ring 2,
Butterfly plate 4, valve shaft 5, pressing plate 6, valve seat 8 and end cap 9.The valve body 1 has a valve flowing channel, and the butterfly plate 4 is arranged on valve stream
In road.There is eccentric distance e between the rotation centerline and valve flowing channel center line of the butterfly plate 4.The pressing plate 6 will be multi-level close
Seal 2 is pressed on the side of butterfly plate 4.The side center of the butterfly plate 4 has boss, and opposite side center has groove.The pressure
The center of plate 6 is provided with the through hole being engaged with boss, is so easy to that preferably multi-layer sealing ring is fixed on butterfly plate 4 and is saved
Material saving.The pressing plate 6 is fixedly connected by connecting bolt 3 with butterfly plate 4.
In the present embodiment, the multi-layer sealing ring 2 is alternate by the hard sealing ring of three-layer metal and two-layer graphite soft seal circle
Combine, make itself and meanwhile have metal hard-sealing pressure-bearing high and nonmetallic soft seal good airproof performance two-fold advantage.It is described many
Flexible gaskets 7 are additionally provided between level sealing ring 2 and butterfly plate 4.When excessive closing impact is run into, the energy of multi-layer sealing ring 2
Enough by the crimp of flexible gaskets 7, slightly move right, so as to protect sealing surface.
The valve shaft 5 is connected to the opposite side of butterfly plate 4 by key and alignment pin, and wherein key is used for transmitting torque, alignment pin
For positioning of the butterfly plate 4 on valve shaft 5, in order to install.One section of space is formed between the groove of the valve shaft 5 and butterfly plate 4, from
And flow resistance coefficient is reduced, save material cost.
The valve seat 8 is fixed in valve body 1 by end cap 9.The rotation centerline of the butterfly plate 4 and the neutral surface of valve seat 8
Between there is eccentric throw d.The inner surface of the valve seat 8 is engaged with the outer surface of multi-layer sealing ring 2, so as to be formed with cone
The annular sealing surface of degree.It is a part for pyramid side with tapered annular sealing surface, its cross section is ellipse, wherein horizontal
Section is the plane perpendicular with valve flowing channel center line.The axis of the annular sealing surface is with valve flowing channel center line in plane
Angle α is formed in I.The plane I is the symmetrical plane of valve body 1, and plane I is vertical with the axis of valve shaft 5.The ring packing
Angle δ is formed between the axis and plane I in face.
Four bias i.e. in the present invention are specially：It is inclined between the rotation centerline of butterfly plate 4 and the neutral surface of valve seat 8
The heart is away from d；Eccentric distance e between the rotation centerline and valve flowing channel center line of butterfly plate 4；The axis of annular sealing surface and valve stream
Road center line forms angle α in plane I；Angle δ (as shown in Figure 2) is formed between the axis and plane I of annular sealing surface.Its
In three-eccentric-butterfly-valve sealing cone axis in plane I, in the absence of this eccentric angle (as shown in Figure 3) of δ.
Angle δ is formed between the axis and plane I of annular sealing surface, the shape of sealing surface is changed so that in sealing surface
Same position, the sealing surface taper of four eccentric-butterfly-valves is different from three-eccentric-butterfly-valve sealing surface taper.As shown in figure 4, solid line is
The projection line frame graph of four eccentric-butterfly-valve sealing surfaces, dotted line is the projection line frame graph of three-eccentric-butterfly-valve sealing surface.Can from figure
Arrive, three-eccentric-butterfly-valve sealing surface is symmetrical on plane I, and four eccentric-butterfly-valve sealing surfaces are not symmetrical further referring to plane I.By fluid point
Analysis software fluent sunykatuib analyses, its sealing has been upset under small guide vane, and the flowing of fluid increases flow resistance, reduces flow, from
And the changes in flow rate amount of turn-off transient is reduced, alleviate " water hammer " phenomenon.
Embodiment 2：
Referring to Fig. 5 and Fig. 6, respectively the streamline distribution figure of three-eccentric-butterfly-valve and four eccentric-butterfly-valve structures under 10 ° of apertures.
Can be obtained from figure, under 10 ° of apertures, three-eccentric-butterfly-valve is initially formed a small-sized whirlpool between the high-speed jet of the upper and lower ends of butterfly plate 4
Stream, forms a maelstrom again afterwards, influences flow of fluid；
Four eccentric-butterfly-valves have been initially formed three small vortex in the high-speed jet area of upper and lower ends, then form a big whirlpool
Stream, flow of fluid is more disorderly after valve, increases fluid flow resistance；But the flow of fluid under influence butterfly valve small guide vane is main
Factor is one maelstrom of formation after valve.Therefore, four eccentric-butterfly-valves do not change the overall flow state of three-eccentric-butterfly-valve fluid, but
Change the flow regime of its partial fluid.
Shown in following form, following table is the discharge coefficient and flow resistance coefficient of three-eccentric-butterfly-valve and four eccentric-butterfly-valves.
Can be obtained from table, in 90 ° of standard-sized sheets, its flow resistance coefficient is 2.10 than three eccentricity structure to four eccentric-butterfly-valve structures
2.12 is small, slightly improves the negotiability of butterfly valve；Therefore, flow resistance when four eccentric-butterfly-valves do not increase standard-sized sheet.It is in aperture
At 10 °, the flow resistance coefficient of four eccentric-butterfly-valves is 931.20 bigger than three-eccentric-butterfly-valve 852.21；The discharge coefficient of four eccentric-butterfly-valves
For 61.19 is smaller than the 63.87 of three-eccentric-butterfly-valve, the changes in flow rate amount of turn-off transient is reduced, alleviate butterfly valve turn-off transient
" water hammer " phenomenon.
Therefore, in the case of four eccentric-butterfly-valve structures had both maintained the fluid behaviour of three eccentricity well-formed, increase again
The flow resistance of medium under small guide vane, such that flow reduces, " water hammer " phenomenon of butterfly valve turn-off transient can be alleviated, reduction is used into
This.
Claims (5)
1. a kind of four eccentric-butterfly-valve, it is characterised in that：Including valve body (1), multi-layer sealing ring (2), butterfly plate (4), valve shaft (5),
Pressing plate (6), valve seat (8) and end cap (9)；The valve body (1) is arranged on valve flowing channel with a valve flowing channel, the butterfly plate (4)
It is interior；There is eccentric distance e between the rotation centerline and valve flowing channel center line of the butterfly plate (4)；The pressing plate (6) will be multi-level
Sealing ring (2) is pressed on the side of butterfly plate (4)；The pressing plate (6) is fixedly connected by bolt with butterfly plate (4)；The valve shaft (5)
The opposite side of butterfly plate (4) is connected to by key and alignment pin；
The valve seat (8) is fixed in valve body (1) by end cap (9)；The rotation centerline of the butterfly plate (4) and valve seat (8)
There is eccentric throw d between neutral surface；The inner surface of the valve seat (8) is engaged with the outer surface of multi-layer sealing ring (2), so that
Formed with tapered annular sealing surface；The axis of the annular sealing surface forms folder with valve flowing channel center line in plane I
Angle α；The plane I is the symmetrical plane of valve body (1), and plane I is vertical with the axis of valve shaft (5)；The annular sealing surface
Angle δ is formed between axis and plane I.
2. a kind of four eccentric-butterfly-valve according to claim 1, it is characterised in that：The side center of the butterfly plate (4) has
Boss, opposite side center has groove；The center of the pressing plate (6) is provided with the through hole being engaged with boss；The valve shaft (5) with
Space is formed between groove.
3. a kind of four eccentric-butterfly-valve according to claim 1, it is characterised in that：The multi-layer sealing ring (2) is by three layers
Metal sealing ring and two-layer graphite soft seal circle is alternate combines.
4. a kind of four eccentric-butterfly-valve according to claim 1, it is characterised in that：The multi-layer sealing ring (2) and butterfly plate
(4) flexible gaskets (7) are additionally provided between；The multi-layer sealing ring (2) produces position by the crimp of flexible gaskets (7)
Move.
5. a kind of four eccentric-butterfly-valve according to claim 1, it is characterised in that：It is cone with tapered annular sealing surface
A part for side, its cross section is ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153641.6A CN106763822A (en) | 2016-12-14 | 2016-12-14 | A kind of four eccentric-butterfly-valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611153641.6A CN106763822A (en) | 2016-12-14 | 2016-12-14 | A kind of four eccentric-butterfly-valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763822A true CN106763822A (en) | 2017-05-31 |
Family
ID=58887993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611153641.6A Pending CN106763822A (en) | 2016-12-14 | 2016-12-14 | A kind of four eccentric-butterfly-valves |
Country Status (1)
| Country | Link |
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| CN (1) | CN106763822A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939989A (en) * | 2017-12-31 | 2018-04-20 | 天津富赛克流体控制设备有限公司 | A seating three-eccentric-butterfly-valve living |
| CN110953354A (en) * | 2019-12-23 | 2020-04-03 | 河源孚罗泰自控阀门有限公司 | Four-eccentric butterfly valve |
| CN114110185A (en) * | 2021-11-23 | 2022-03-01 | 上海凯工阀门股份有限公司 | Variable-eccentricity hard-sealing butterfly valve |
| CN114413006A (en) * | 2022-03-01 | 2022-04-29 | 北京瑞拓江南自控设备有限公司 | Spherical bidirectional sealed four-eccentric butterfly valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442488A (en) * | 1965-03-23 | 1969-05-06 | Karl Adams | Valve |
| CN104048057A (en) * | 2014-06-09 | 2014-09-17 | 江苏络科阀门有限公司 | Novel four-eccentric oval sealing face bidirectional pressure butterfly valve |
| CN203963046U (en) * | 2014-06-09 | 2014-11-26 | 江苏络科阀门有限公司 | The just round sealing surface Bidirectional pressure butterfly valve of one |
| CN203963045U (en) * | 2014-06-09 | 2014-11-26 | 江苏络科阀门有限公司 | A kind of novel four eccentric elliptic sealing surface Bidirectional pressure butterfly valves |
| CN105003667A (en) * | 2015-07-07 | 2015-10-28 | 武汉策尔曼自动化设备有限公司 | Four-eccentricity butterfly valve |
| CN205745345U (en) * | 2016-06-12 | 2016-11-30 | 方敏 | Positive cone three-eccentric-butterfly-valve |
| CN205745342U (en) * | 2016-05-10 | 2016-11-30 | 伯特利阀门集团有限公司 | Five eccentric tilting cambered surface sealed butterfly valves |
-
2016
- 2016-12-14 CN CN201611153641.6A patent/CN106763822A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442488A (en) * | 1965-03-23 | 1969-05-06 | Karl Adams | Valve |
| CN104048057A (en) * | 2014-06-09 | 2014-09-17 | 江苏络科阀门有限公司 | Novel four-eccentric oval sealing face bidirectional pressure butterfly valve |
| CN203963046U (en) * | 2014-06-09 | 2014-11-26 | 江苏络科阀门有限公司 | The just round sealing surface Bidirectional pressure butterfly valve of one |
| CN203963045U (en) * | 2014-06-09 | 2014-11-26 | 江苏络科阀门有限公司 | A kind of novel four eccentric elliptic sealing surface Bidirectional pressure butterfly valves |
| CN105003667A (en) * | 2015-07-07 | 2015-10-28 | 武汉策尔曼自动化设备有限公司 | Four-eccentricity butterfly valve |
| CN205745342U (en) * | 2016-05-10 | 2016-11-30 | 伯特利阀门集团有限公司 | Five eccentric tilting cambered surface sealed butterfly valves |
| CN205745345U (en) * | 2016-06-12 | 2016-11-30 | 方敏 | Positive cone three-eccentric-butterfly-valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939989A (en) * | 2017-12-31 | 2018-04-20 | 天津富赛克流体控制设备有限公司 | A seating three-eccentric-butterfly-valve living |
| CN110953354A (en) * | 2019-12-23 | 2020-04-03 | 河源孚罗泰自控阀门有限公司 | Four-eccentric butterfly valve |
| CN110953354B (en) * | 2019-12-23 | 2021-10-15 | 河源孚罗泰自控阀门有限公司 | Four-eccentric butterfly valve |
| CN114110185A (en) * | 2021-11-23 | 2022-03-01 | 上海凯工阀门股份有限公司 | Variable-eccentricity hard-sealing butterfly valve |
| CN114110185B (en) * | 2021-11-23 | 2024-07-19 | 上海凯工阀门股份有限公司 | Become eccentric hard seal butterfly valve |
| CN114413006A (en) * | 2022-03-01 | 2022-04-29 | 北京瑞拓江南自控设备有限公司 | Spherical bidirectional sealed four-eccentric butterfly valve |
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Application publication date: 20170531 |