CN105003673B - High-pressure process welds linking band and bypasses blowdown parallel gate valve - Google Patents
High-pressure process welds linking band and bypasses blowdown parallel gate valve Download PDFInfo
- Publication number
- CN105003673B CN105003673B CN201510383670.0A CN201510383670A CN105003673B CN 105003673 B CN105003673 B CN 105003673B CN 201510383670 A CN201510383670 A CN 201510383670A CN 105003673 B CN105003673 B CN 105003673B
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- Prior art keywords
- valve
- flashboard
- spring
- flashboards
- valve seat
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to a kind of gate valves with radical road.It include: valve body, valve seat, flashboard, flashboard frame, valve rod, valve deck；Closed space is formed between the valve deck and valve, valve seat, flashboard, flashboard are set up in the inner, and valve seat is built in the inner wall of two valve ports；Two parallel valve plates of block are built between valve seat, are cooperated with valve base sealing, and flashboard frame connects two flashboards, and valve rod is connect with flashboard；It is characterized by: being equipped with spring between two flashboards；Valve body is externally provided with bypass line, and an end of bypass line is connected between two Zhabei；On another pressure duct for being terminated at connection valve body；Bypath valve is equipped in bypass line.Advantage is valve seat using fixed structure, and sealing surface weld deposit hard alloy improves the corrosion resistance and wearability of valve, extends the service life of valve.
Description
Technical field
The present invention relates to a kind of gate valves, are related specifically to a kind of gate valve with radical road.
Background technique
Domestic and international traditional gate valve is all that the sealing on an inclined-plane is formed with valve seat using the single, double flashboard structure with inclined-plane
Pair achievees the effect that forced seal by the lower thrust of valve rod.
Parallel gate type gate valve generallys use double disc structure, mainly includes valve body, the intracorporal valve rod of valve is protruded into, with valve
The left and right flashboard etc. of bar connection.It is that valve rod pushes left and right flashboard to enter in the runner of valve body that principle, which is truncated, in it, and left flashboard is in valve
It pushes the sealing surface of right flashboard to press to the other side under the action of the pressure medium of body runner side, realizes the self-sealing of runner.It is existing
Gate valve with by-passing valve is provided to increase or decrease the pressure of side, for increasing the pressure of side to push the other side
Flashboard, to reach sealing.It is to reduce liquid to the pressure of valve, so that flashboard be referred to reduce by a lateral pressure.
Summary of the invention
Valve pressure is promoted to after 2500lb, still uses the design of valve gate valve, allow him by problem to be solved by this invention
Be still able to satisfy design requirement.
Purpose is created to complete foregoing invention, the present invention is designed such that a kind of high-pressure process weldering linking band bypass row
Dirty parallel gate valve, comprising: valve body, valve seat, flashboard, flashboard frame, valve rod, valve deck；It is formed between the valve deck and valve body closed
Space, valve seat, flashboard, flashboard set up in the inner, valve seat is built in the inner wall of two valve ports；Two flashboards it is parallel be built in valve
Between seat, cooperate with valve base sealing, flashboard frame connects two flashboards, and valve rod is connect with flashboard；It is characterized by: described two
Spring is equipped between flashboard；Valve body is externally provided with bypass line, and an end of bypass line is connected between two flashboards；It is another to be terminated at
On the pressure duct for connecting valve body；Bypath valve is equipped in bypass line.Preloading spring is equipped between left flashboard and right flashboard.Benefit
A pair of of parallel sealing pair is formd so that two pieces of parallel flashboards and valve seat are in close contact with spring, utilizes itself pressure of medium
The sealing of power realization valve.After opening bypass, fliud flushing between liquid flashboard, using the pressure of liquid and the pressure of spring, simultaneously
Pressure allows flashboard to open, simultaneously because also reducing the pressure of side the reason of bypass, accelerates spring and promotes to this side,
To realize the sidesway sealing of flashboard.Traditional gate valve parallel double-flashboard design pressure is 900Lb or less.Existing gate valve design pressure reaches
To 2500Lb.
Above-mentioned technical proposal is improved further, the inside upper part of the flashboard and lower part are respectively equipped with protrusion
The fixed support of flashboard, the flashboard frame are integrally in cap ned, and upper end is equipped with T-shaped pressing plate, and lower end is equipped with inverted T-shaped support
Plate, for T-shaped pressing plate on two flashboards, T-shaped supporting plate holds in the palm two flashboards in bottom；T-shaped pressing plate and T-shaped supporting plate it
Between be connected with each other, the perforation passed through for spring and spring(-supported) mount is equipped among flashboard frame.The spring is built in symmetrical flashboard
Between fixed support；The spring is put into spring(-supported) mount, and spring(-supported) mount is stuck between the fixed support of flashboard.By rationally designing, allow
The fixed support of flashboard is logical to hold up flashboard, while not influencing spring again in the fixed support intermediary movements of flashboard.
Above-mentioned technical proposal is improved further, one end uses welding side between the valve seat and inlet and outlet pipeline
Formula connection, the other end are connected using flange method.
The valve seat is equipped with hard sealing ring, is fixedly connected with valve seat.
It is equipped with filler and pressing sleeve between valve deck and valve rod, pushes down pressing sleeve and filler with pressing plate in the upper end of valve deck；Pressing plate
It is connect by hold-down bolt with valve body.Butterfly spring is equipped between pressing plate and hold-down bolt.The pressure at the gate valve both ends reaches
2500Lb.Mudhole is equipped in the bottom of valve body.
This patent has the characteristics that 1 valve seat construction: former valve seat is soft seal, floating structure compared with prior art；It is existing
Valve seat is hard sealing, fixed structure.
2 original parallel double-flashboard design pressure 900Lb or less；Existing gate valve design pressure reaches 2500Lb.
3 increase disk spring, realize the sealing between filler and valve rod using the pressing force of dish, without excessively compressing
Filler, reduces the frictional force of filler and valve rod, to reduce the opening and closing torque of gate valve.
4 increase bypass and blowdown apparatus, reduce valve and use pressure, guarantee that valve is safe and reliable, blowdown is convenient.
Operational torque when 5 valve openings, closing is small, is the 70% of traditional same specification valve, greatly reduces energy consumption.
6 valve seats use fixed structure, and sealing surface weld deposit hard alloy improves the corrosion resistance and wearability of valve, prolongs
The service life of valve is grown.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
As shown, a kind of high-pressure process weldering linking band bypasses blowdown parallel gate valve, comprising: valve body 1, valve seat 2, flashboard 3,
Flashboard frame 6, valve rod 7, valve deck 8；Closed space is formed between the valve deck 8 and valve body, is equipped with blowdown in the bottom of valve body
Hole 15；Valve seat 2, flashboard 3, flashboard frame 6 are set in the inner, and valve seat 2 is built in the inner wall of two valve ports；Two flashboards are parallel to be built in
It between valve seat 2, seals and cooperates with valve seat 2, flashboard frame 6 connects two flashboards 3, and valve rod 7 is connect with flashboard 3；The flashboard 3
Inside upper part and lower part are respectively equipped with the fixed support of flashboard 3 of protrusion, and the whole flashboard frame 6 is in cap ned, and upper end is equipped with T word
Shape pressing plate, lower end are equipped with inverted T-shaped supporting plate, and for T-shaped pressing plate on two flashboards, T-shaped supporting plate holds in the palm two in bottom
A flashboard 3；It is connected with each other between T-shaped pressing plate and T-shaped supporting plate, is equipped among flashboard frame 6 and is passed through for spring 4 and spring(-supported) mount 5
Perforation.Spring 4 is equipped between two flashboards 3；The spring 4 is built between the fixed support of symmetrical flashboard 3；Institute
The spring 4 stated is put into spring(-supported) mount 5, and spring(-supported) mount 5 is stuck between the fixed support of flashboard 3.
Valve body 1 is externally provided with bypass line, and an end of bypass line is connected between two flashboards；It is another to be terminated at connection valve body
On 1 pressure duct；Bypath valve is equipped in bypass line.Preloading spring 4 is equipped between left flashboard 3 and right flashboard 3.
It is equipped with filler and pressing sleeve 12 between valve deck 8 and valve rod 7, pushes down 12 He of pressing sleeve in the upper end pressing plate 13 of valve deck 8
Filler 11；Pressing plate 13 is connect by hold-down bolt 16 with valve body 1.Butterfly spring is equipped between pressing plate 13 and hold-down bolt.Described
One end is connected using welding manner between valve seat 2 and inlet and outlet pipeline, and the other end is connected using flange method.The valve seat 2
It is equipped with hard sealing ring, is fixedly connected with valve seat 2.
A pair of of parallel sealing pair is formd so that two pieces of parallel flashboards 3 and valve seat 2 are in close contact using spring 4, benefit
The sealing of valve is realized with the pressure itself of medium.Open bypass after, fliud flushing between liquid flashboard 3, using liquid pressure and
The pressure of spring 4, while pressure allows flashboard 3 to open, simultaneously because also reducing the pressure of side the reason of bypass, accelerating
Spring 4 is promoted to this side, to realize the sidesway sealing of flashboard 3.3 design pressure of traditional gate valve parallel double-flashboard is 900Lb
Below.Existing gate valve design pressure reaches 2500Lb.
This patent has the characteristics that 1 valve seat, 2 structure: former valve seat 2 is soft seal, floating structure compared with prior art；
Existing valve seat 2 is hard sealing, fixed structure.
2 original 3 design pressure 900Lb of parallel double-flashboard or less；Existing gate valve design pressure reaches 2500Lb.
3 increase disk spring 4, realize the sealing between filler and valve rod 7 using the pressing force of dish, are not necessarily to partial pressure
Tight filler, reduces the frictional force of filler Yu valve rod 7, to reduce the opening and closing torque of gate valve.
4 increase bypass and blowdown apparatus, reduce valve and use pressure, guarantee that valve is safe and reliable, blowdown is convenient.
Operational torque when 5 valve openings, closing is small, is the 70% of traditional same specification valve, greatly reduces energy consumption.
6 valve seats 2 use fixed structure, and sealing surface weld deposit hard alloy improves the corrosion resistance and wearability of valve, prolongs
The service life of valve is grown.
Claims (1)
1. a kind of high-pressure process weldering linking band bypasses blowdown parallel gate valve, comprising: valve body, valve seat, flashboard, flashboard frame, valve rod, valve
Lid；Closed space is formed between the valve deck and valve body, valve seat, flashboard, flashboard are set up in the inner, and valve seat is built in two valves
The inner wall of mouth；Two flashboards are parallel to be built between valve seat, is cooperated with valve base sealing, flashboard frame connects two flashboards, valve rod
It is connect with flashboard；It is characterized by: being equipped with spring between two flashboards；Valve body is externally provided with bypass line, bypass line
An end be connected between two flashboards；On another pressure duct for being terminated at connection valve body；Bypath valve is equipped in bypass line；
The inside upper part of the flashboard and lower part are respectively equipped with the fixed support of flashboard of protrusion, and the flashboard frame is integrally in cap ned,
Upper end is equipped with T-shaped pressing plate, and lower end is equipped with inverted T-shaped supporting plate, and on two flashboards, T-shaped supporting plate exists T-shaped pressing plate
Hold in the palm two flashboards in bottom；It is connected with each other between T-shaped pressing plate and T-shaped supporting plate, is equipped among flashboard frame for spring and spring
The perforation that frame passes through；The spring is built between the fixed support of symmetrical flashboard；The spring is put into spring(-supported) mount, spring
Frame is stuck between the fixed support of flashboard；One end is connected using welding manner between the valve seat and inlet and outlet pipeline, the other end
It is connected using flange method；The valve seat is equipped with hard sealing ring, is fixedly connected with valve seat；It is equipped between valve deck and valve rod
Filler and pressing sleeve push down pressing sleeve and filler with pressing plate in the upper end of valve deck；Pressing plate is connect by hold-down bolt with valve body；In pressing plate
Butterfly spring is equipped between hold-down bolt；The pressure at the gate valve both ends reaches 2500Lb；Mudhole is equipped in the bottom of valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383670.0A CN105003673B (en) | 2015-07-03 | 2015-07-03 | High-pressure process welds linking band and bypasses blowdown parallel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383670.0A CN105003673B (en) | 2015-07-03 | 2015-07-03 | High-pressure process welds linking band and bypasses blowdown parallel gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105003673A CN105003673A (en) | 2015-10-28 |
| CN105003673B true CN105003673B (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510383670.0A Active CN105003673B (en) | 2015-07-03 | 2015-07-03 | High-pressure process welds linking band and bypasses blowdown parallel gate valve |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018053665A1 (en) * | 2016-09-22 | 2018-03-29 | 陈金京 | Large-caliber expansion blowdown type parallel gate valve having bypass and not having flow diversion hole |
| CN107701761A (en) * | 2017-11-21 | 2018-02-16 | 盐城市大丰奥凯流体机械有限公司 | Bypass type valve and fluid cut-off device |
| CN108518495B (en) * | 2018-04-24 | 2020-05-05 | 浙江海睿阀门有限公司 | Control system for double-valve-plate gate valve of pneumatic conveying system and use method |
| CN109114236B (en) * | 2018-09-19 | 2020-02-07 | 南通国电电站阀门股份有限公司 | Nuclear power island core reheat steam main flow control valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US712485A (en) * | 1901-10-10 | 1902-11-04 | John H Bickford | Valve. |
| US715745A (en) * | 1901-11-04 | 1902-12-16 | John H Bickford | Valve. |
| FR1353573A (en) * | 1963-01-15 | 1964-02-28 | Comp Generale Electricite | Sealing valve with direct passage |
| GB1403959A (en) * | 1972-10-10 | 1975-08-28 | Babcock & Wilcox Ag | Parallel plate valve |
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
-
2015
- 2015-07-03 CN CN201510383670.0A patent/CN105003673B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US712485A (en) * | 1901-10-10 | 1902-11-04 | John H Bickford | Valve. |
| US715745A (en) * | 1901-11-04 | 1902-12-16 | John H Bickford | Valve. |
| FR1353573A (en) * | 1963-01-15 | 1964-02-28 | Comp Generale Electricite | Sealing valve with direct passage |
| GB1403959A (en) * | 1972-10-10 | 1975-08-28 | Babcock & Wilcox Ag | Parallel plate valve |
| CN103410997A (en) * | 2013-08-26 | 2013-11-27 | 南通国电电站阀门有限公司 | High-pressure-relief type parallel-double-gate single side hard sealing gate valve |
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| Publication number | Publication date |
|---|---|
| CN105003673A (en) | 2015-10-28 |
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