CN203717996U - Super-large-aperture forged steel gate valve - Google Patents
Super-large-aperture forged steel gate valve Download PDFInfo
- Publication number
- CN203717996U CN203717996U CN201320688087.7U CN201320688087U CN203717996U CN 203717996 U CN203717996 U CN 203717996U CN 201320688087 U CN201320688087 U CN 201320688087U CN 203717996 U CN203717996 U CN 203717996U
- Authority
- CN
- China
- Prior art keywords
- valve
- pipe joint
- pass
- valve body
- forged steel
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000010079 rubber tapping Methods 0.000 claims description 16
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model relates to a super-large-aperture forged steel gate valve which has the innovation points that the super-large-aperture forged steel gate valve comprises a valve body, a pipe joint, a by-pass pipe and a by-pass valve, wherein the valve body is provided with a by-pass branch positioned outside the valve body; a liquid inlet side pipe joint and a liquid outlet side pipe joint communicated with an inner cavity of the valve body at the side are respectively arranged on the outer side walls of a liquid inlet side and a liquid outlet side of the valve body; the liquid inlet side pipe joint is communicated with the liquid outlet side pipe joint through the by-pass pipe to form the by-pass branch, and the by-pass valve is arranged on the by-pass pipe. The super-large-aperture forged steel gate valve has the advantages that before the super-large-aperture forged steel gate valve is opened, the by-pass valve on the by-pass pipe is opened, so that a part of inlet mediums reaches an outlet through the by-pass pipe; a pipeline behind the valve is preheated, so that the purposes of balancing the front pressure and the rear pressure and reducing the pressure difference are achieved, thereby the opening torque when the valve is opened is reduced; meanwhile, the specification of an electric actuating mechanism is also reduced, so that not only can the system demands can be met, but also the equipment manufacturing cost can be saved, and the economic benefit is also greatly improved at the same time.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of super large caliber forged steel gate valve.
Background technique
The keying resistance of general gate valve overcomes by the mechanical device of electric actuator entirely, gate valve bore and pressure are larger, valve opening and closing moment sharply increases thereupon, required electric actuator specification or mechanical device can be very high, greatly increase design and manufacture cost, the electric actuator even having cannot be purchased, and brings inconvenience to design, manufacture and maintenance etc.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of super large caliber forged steel gate valve, can be in order to pressure before and after compensation flap before keying, reduce valve front and back pressure reduction, thereby reduce the keying moment of valve, ensure that valve opens and closes smoothly, pipeline before and after valve is carried out to preheating heating coil, to ensure that whole system safely and steadily runs simultaneously.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of super large caliber forged steel gate valve, its innovative point is: comprise valve body, pipe joint, bypass tube and bypass valve, described valve body has a bypass branch road being positioned at outside valve body, is specially: on the outer side wall of valve body liquid feeding side and tapping side, have respectively one with liquid feeding side pipe joint and the tapping side pipe joint of this side valve intracoelomic cavity conducting; Between liquid feeding side pipe joint and tapping side pipe joint, be communicated with and form a bypass branch road by bypass tube, and bypass valve is set on bypass tube.
Preferably, described liquid feeding side pipe joint and tapping side pipe joint are all welded to connect with valve body, bypass tube.
The utility model has the advantage of: before super large caliber forged steel gate valve is opened, open in advance the bypass valve on bypass tube, make department's entrance medium reach outlet by bypass tube, pipeline after heat-riser valve, reach the object that balance front and back pressure reduces pressure reduction, thereby the unlatching moment while reducing valve opening, has also reduced electric actuator specification simultaneously, can meet system requirements, save again device fabrication cost, also greatly improved economic benefit simultaneously.
Brief description of the drawings
Fig. 1 is that the utility model super large caliber forged steel flashboard for sluice valve and bypass valve are closed schematic diagram.
Fig. 2 is that the utility model super large caliber forged steel flashboard for sluice valve is closed bypass valve unlatching schematic diagram.
Fig. 3 is that the utility model super large caliber forged steel flashboard for sluice valve is opened bypass valve unlatching schematic diagram.
Embodiment
Refer to Fig. 1, the utility model has disclosed a kind of super large caliber forged steel gate valve, comprises valve body 1, pipe joint, bypass tube 3 and bypass valve 4.
Valve body 1 has a bypass branch road being positioned at outside valve body 1, is specially: on the outer side wall of valve body 1 liquid feeding side and tapping side, have respectively one with liquid feeding side pipe joint 21 and the tapping side pipe joint 22 of this side valve body 1 inner chamber conducting; Between liquid feeding side pipe joint 21 and tapping side pipe joint 22, be communicated with and form a bypass branch road by bypass tube 3, and bypass valve 4 is set on bypass tube 3.
As more particular embodiment of the present invention: liquid feeding side pipe joint 21 all adopts the mode being welded to connect to be connected sealing with valve body 1, bypass tube 3 with tapping side pipe joint 22.
Working principle:
1) as shown in Figure 1, valve is in closed state, and the bypass valve on bypass tube cuts out.Medium is entered by liquid feeding side, and valve liquid feeding side and bypass tube one side abrim, if direct Open valve now needs very large moment.
2) as shown in Figure 2, bypass valve is opened, part medium arrives tapping side via bypass tube, and along with the inflow of medium, tapping side pipeline progressively heats up, tapping side pressure progressively rises, before and after valve, pressure reduction gradually reduces, and the active force that makes to act on valve sealing face reduces, thereby reduces valve opening moment, reduce the mechanical force moment of electric actuator, made valve overall performance more be tending towards reasonable.
3) as shown in Figure 3, after bypass valve is opened, pressure reduction gradually reduces before and after valve, and now, the flashboard of opening valve gradually of the electric actuator by control valve, makes sprue medium flow to tapping side by liquid feeding side, thereby complete the breakdown action of valve.In whole process, bypass branch road is opened in advance, plays auxiliary unlatching and heating coil effect, then makes the medium power that acts on main gate-board reduce, and opens flashboard by electric actuator, completes the breakdown action of whole valve.By by-pass collar, avoid the waste of equipment, optimize product performance, save valve holistic cost.
4) when valve closing, first close main valve, close subsequently bypass valve.
Claims (2)
1. a super large caliber forged steel gate valve, is characterized in that: comprise valve body, pipe joint, bypass tube and bypass valve, described valve body has a bypass branch road being positioned at outside valve body, is specially:
On the outer side wall of valve body liquid feeding side and tapping side, have respectively one with liquid feeding side pipe joint and the tapping side pipe joint of this side valve intracoelomic cavity conducting; Between liquid feeding side pipe joint and tapping side pipe joint, be communicated with and form a bypass branch road by bypass tube, and bypass valve is set on bypass tube.
2. super large caliber forged steel gate valve according to claim 1, is characterized in that: described liquid feeding side pipe joint and tapping side pipe joint are all welded to connect with valve body, bypass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688087.7U CN203717996U (en) | 2013-11-04 | 2013-11-04 | Super-large-aperture forged steel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320688087.7U CN203717996U (en) | 2013-11-04 | 2013-11-04 | Super-large-aperture forged steel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717996U true CN203717996U (en) | 2014-07-16 |
Family
ID=51157147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320688087.7U Expired - Lifetime CN203717996U (en) | 2013-11-04 | 2013-11-04 | Super-large-aperture forged steel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717996U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109707854A (en) * | 2018-11-30 | 2019-05-03 | 中国石油天然气股份有限公司 | A kind of test turnover panel control valve |
| CN116735141A (en) * | 2023-08-10 | 2023-09-12 | 中国航空工业集团公司沈阳空气动力研究所 | Valve group of direct-current temporary flushing blowing type hypersonic wind tunnel and working method |
-
2013
- 2013-11-04 CN CN201320688087.7U patent/CN203717996U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109707854A (en) * | 2018-11-30 | 2019-05-03 | 中国石油天然气股份有限公司 | A kind of test turnover panel control valve |
| CN116735141A (en) * | 2023-08-10 | 2023-09-12 | 中国航空工业集团公司沈阳空气动力研究所 | Valve group of direct-current temporary flushing blowing type hypersonic wind tunnel and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |