CN102927294A - Y-shaped straight-through jacket gas-phase valve of bellows - Google Patents
Y-shaped straight-through jacket gas-phase valve of bellows Download PDFInfo
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- CN102927294A CN102927294A CN2012104477877A CN201210447787A CN102927294A CN 102927294 A CN102927294 A CN 102927294A CN 2012104477877 A CN2012104477877 A CN 2012104477877A CN 201210447787 A CN201210447787 A CN 201210447787A CN 102927294 A CN102927294 A CN 102927294A
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- spool
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Abstract
The invention relates to a Y-shaped straight-through jacket gas-phase valve of a bellows. The Y-shaped straight-through jacket gas-phase valve is characterized in that a jacket layer is wrapped on the periphery of a valve body, and a cavity is formed between the jacket layer and the valve body. A valve base is arranged in the valve body, a valve plug is arranged on the valve base, and a guide rod is arranged at the bottom of the valve plug and matched with a guide hole arranged at the bottom of the valve body. A valve rod is connected with the valve plug, a bellows sleeve is connected onto the valve body, the bellows is arranged on the valve rod, the lower end of the bellows is integrally welded with the valve rod, and the upper end of the bellows is clamped between the bellows sleeve and an upper cover. An anti-rotating screw is arranged in a threaded hole of the upper cover and used for preventing the valve rod from rotating in vertical movement. The Y-shaped straight-through jacket gas-phase valve of the bellows can improve energy use ratio, increases safety of production devices, and reduces maintenance expanse and frequent maintenance; and enables the valve plug to be stable in movement when the valve is switched on and off, and ensures operation reliability of the valve.
Description
Technical field
The present invention relates to a kind of valve, especially a kind of bellows Y type leads directly to the chuck gas valve.
Background technique
Polyester is the important raw and processed materials of textile industry.In the production technology of polyester, first with EG(ethylene glycol) be transported to separator with the mixture of water and separate, from separator liquid EG out and solid-state PTA(p-phthalic acid) powder mixes, be transported to the slurry dispensing unit, then under 260 ℃ temperature through over-churning, polycondensation reaction, finally obtain polyester.
In the whole manufacturing process of production of polyester, it is a very important step that EG and the mixture of water are transported to that separator separates.The mixture of this moment contains vapour, liquid two states, and this valve that requires to flow through has preferably negotiability.We know that the limit negotiability of valve can be judged with the choked flow equation formula: △ P
Max=F
L(P
1-F
FP
V), in the formula:
△ P
Max-blocking the maximum effectively pressure reduction that is used for the calculated flow rate coefficient under the stream condition
F
L-liquid pressure recovery factor
P
1-liquid inlet pressure
F
F-liquid critical pressure ratio coefficient
P
VSaturation vapor pressure under the temperature of-liquid inlet
, appearance limited when the negotiability of valve blocked when flowing, be equal to or less than the saturation vapor pressure of medium under the valve inlet temperature from vena contracta until the static pressure of valve outlet port is reduced to, the partially liq vaporization, make the phenomenon that forms gas-liquid two-phase behind the valve, i.e. " flash distillation ", this moment, medium can produce erosion to trims such as the spool of modulating valve, valve seats, and affected the negotiability of valve.If after the generation flash distillation, downstream pressure P
2Be not to remain on below the saturation vapour pressure Pv, but suddenly rise again after the modulating valve throttle orifice that the bubble that flash distillation this moment produces can break and return liquid, this process is exactly cavitation.When producing cavitation, because pressure rise behind the modulating valve throttle orifice, in succession explosion of the bubble that produces during flash distillation, all concentration of energy that bubble eruption produces are on breakdown point, form great impact force, if and breakdown point is just at the near surface of valve or pipeline, impact force can slowly be torn material surface, " cavitation erosion " phenomenon of Here it is fluid.
Based on above-mentioned consideration, the delivery valve of EG/ water must have preferably negotiability, because the restriction of flow channel shape is difficult to increase substantially its Cv value, but the latus rectum of DN350 causes sealability, the spool operation stability of single-seat valve to face very large hidden danger to common single-seat adjusting valve on the other hand on the one hand.
Summary of the invention
The object of the invention is to avoid above-mentioned potential risk, propose a kind of reliable modulating valve rational in infrastructure, guarantee that the segregating unit of EG/ water in the polyester process moves safely and steadly, enhance productivity.
According to technological scheme provided by the invention, the straight-through chuck gas valve of a kind of bellows Y type comprises valve body, chuck layer, valve seat, spool, pin, valve rod, bellows, lip weld tabs, bellows-sheathed, spirotallic gasket, loam cake, anti-turn screw; Described chuck layer is coated on around the valve body, and form cavity between the valve body, described valve seat is installed in valve inner by screw-thread fit, described spool is installed on the valve seat, and and valve seat between form sealing by cone match, the spool bottom is provided with guide rod, guide rod cooperates the formation leading role with the pilot hole of valve body bottom, described valve rod is connected with spool by screw-thread fit, described bellows-sheathed is connected on the valve body, bellows is installed on the valve rod, and its lower end and valve rod are welded into integral body, and the upper end is clamped between bellows-sheathed and the loam cake, the side of described loam cake is provided with tapped hole, anti-turn screw is installed in the tapped hole, and described anti-turn screw cooperates with anti-rotation groove on the valve rod, prevents the effect that valve rod rotates when moving up and down.
As a further improvement on the present invention, the pilot hole of described valve body bottom is provided with a relief hole, is used for eliminating pressure reduction.
As a further improvement on the present invention, described spool is provided with pin-and-hole, in the described pin-and-hole pin is installed, and plays the effect of locking thread.
As a further improvement on the present invention, described bellows-sheathed and be provided with the lip weld tabs between valve body is realized sealing by the lip weld tabs.
As a further improvement on the present invention, between described bellows-sheathed and the loam cake, be provided with spirotallic gasket, and seal by spirotallic gasket.
As a further improvement on the present invention, 60 ° of angles of described spool and valve flowing channel center line inclination.
Compared with the prior art the present invention has the following advantages:
1, Y valve body structure fluid resistance is less, so that valve has higher negotiability (Cv) and lower cavitation number (F
L).
2, adopt the structural design of sylphon seal to eliminate common valve stem packing seal aging shortcoming fast, that easily leak fully, not only improved energy use efficiency, the Security that increases manufacturing facilities has reduced maintenance expenses and frequently maintenance, and the working environment of clean and safe also is provided.
3, adopt the up and down cavity type spool of dual-guiding structure design, so that valve valve core movement in switching process is steady, guaranteed the Reliability of Microprocessor of valve.
4, the lip weld tabs sealing configuration between Y valve body and the bellows-sheathed has thoroughly solved the problem that easily leak at common valve loam cake place, has increased the sealing reliability of valve.
5, adopt bellows structure to seal between valve rod and bellows-sheathed and the loam cake, described bellows is double layer design, adopts the installation method of compression, each 50% stroke of stretching during installation.
Description of drawings
Fig. 1 is use phase diagram of the present invention.
Fig. 2 is the structural representation of the cavity type spool of bottom guide.
Fig. 3 is lip weld tabs sealed structural representation.
Fig. 4 is the valve base sealing structure schematic representation.
Embodiment
The invention will be further described below in conjunction with concrete accompanying drawing.
Such as Fig. 1～shown in Figure 4: the straight-through chuck gas valve of a kind of bellows Y type comprises Y valve body 1, chuck layer 2, valve seat 3, spool 4, pin 5, valve rod 6, bellows 7, lip weld tabs 8, bellows-sheathed 9, spirotallic gasket 10, loam cake 11, anti-turn screw 12 and guide rod 13 etc.
The present invention adopts chuck layer 2 to be coated on around the Y valve body 1, and form cavity 15 between the Y valve body 1, described valve seat 3 is installed in Y valve body 1 inside by screw-thread fit, described spool 4 is installed on the valve seat 3, and and valve seat 3 between form sealing by cone match, the guide rod 13 of spool 4 bottoms cooperates the formation leading role with the pilot hole of Y valve body 1 bottom, be provided with a relief hole 16 in the pilot hole bottom of Y valve body, is used for eliminating pressure reduction.Described valve rod 6 is connected with spool 4 by screw-thread fit, and pin 5 is installed in pin-and-hole, play the effect of locking thread, described bellows-sheathed 9 is connected on the Y valve body 1 by screw rod, and by the 8 realization sealings of lip weld tabs, described bellows 7 is installed on the valve rod 6, its lower end and valve rod 6 are welded into integral body, the upper end is clamped between bellows-sheathed 9 and the loam cake 11, and seal by spirotallic gasket 10, the side of described loam cake 11 is provided with tapped hole, and anti-turn screw 12 is installed in the tapped hole, described anti-turn screw 12 cooperates with anti-rotation groove on the valve rod 6, plays the effect that prevents that valve rod 6 from rotating when moving up and down.
Working principle of the present invention: when valve carried out switch motion, spool 4 has up and down two guiding and inside is designed to cavity structure so that valve event is steady, has guaranteed Reliability of Microprocessor.Because the moving direction of spool 4 is not vertical with the runner center line of Y valve body 1, but forms 60 ° inclination angle, greatly reduces fluid resistance, so that valve has higher negotiability (Cv) and lower cavitation number (F
L).Adopt the upper Seal Design of bellows structure to eliminate common valve stem packing seal aging shortcoming fast, that easily leak fully.Lip weld tabs sealing configuration between Y valve body 1 and the bellows-sheathed 9 has thoroughly solved the problem that easily leak at common valve loam cake place, has increased the sealing reliability of valve.The anti-turn screw 12 that screws in from loam cake 11 sides cooperates with the anti-rotation groove on the valve rod 6, thereby prevents that effectively valve rod 6 from rotating the security risk of damaging bellows 7 when moving up and down.In addition, the pilot hole of Y valve body 1 bottom is provided with a relief hole, can guarantee guiding groove inner with valve pocket in pressure balance, prevent from causing the problem that valve event is smooth even can't switch put in place because there is inside and outside differential pressure in guiding groove.
Claims (6)
1. the straight-through chuck gas valve of bellows Y type comprises valve body (1), valve seat (3), spool (4), valve rod (6), loam cake (11); It is characterized in that: described valve body (1) coats chuck layer (2) on every side, form cavity between described chuck layer (2) and the valve body (1), described valve seat (3) is installed in valve body (1) inside by screw-thread fit, described spool (4) is installed on the valve seat (3), form sealing by cone match between described spool (4) and the valve seat (3), spool (4) bottom is provided with guide rod (13), described guide rod (13) cooperates the formation leading role with the pilot hole of valve body (1) bottom, described valve rod (6) is connected with spool (4) by screw-thread fit, described bellows-sheathed (9) is connected on the valve body (1), bellows (7) is installed on the valve rod (6), its lower end and valve rod (6) are welded into integral body, the upper end is clamped between bellows-sheathed (9) and the loam cake (11), the side of described loam cake (11) is provided with tapped hole, anti-turn screw (12) is installed in the described tapped hole, described anti-turn screw (12) cooperates with anti-rotation groove on the valve rod (6), prevents that valve rod (6) from rotating when moving up and down.
2. the straight-through chuck gas valve of a kind of bellows Y type as claimed in claim 1 is characterized in that: be provided with a relief hole bottom the pilot hole of described valve body (1).
3. a kind of bellows Y type as claimed in claim 1 leads directly to the chuck gas valve, and it is characterized in that: described spool (4) is provided with pin-and-hole (14), and pin (5) is installed in the described pin-and-hole (14).
4. the straight-through chuck gas valve of a kind of bellows Y type as claimed in claim 1 is characterized in that: described bellows-sheathed (9) and be provided with lip weld tabs (8) between valve body (1).
5. the straight-through chuck gas valve of a kind of bellows Y type as claimed in claim 1 is characterized in that: between described bellows-sheathed (9) and the loam cake (11), be provided with spirotallic gasket (10).
6. the straight-through chuck gas valve of a kind of bellows Y type as claimed in claim 1 is characterized in that: the angle that described spool (4) and the inclination of valve body (1) runner center line are 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210447787.7A CN102927294B (en) | 2012-11-10 | 2012-11-10 | Y-shaped straight-through jacket gas-phase valve of bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210447787.7A CN102927294B (en) | 2012-11-10 | 2012-11-10 | Y-shaped straight-through jacket gas-phase valve of bellows |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102927294A true CN102927294A (en) | 2013-02-13 |
| CN102927294B CN102927294B (en) | 2014-02-12 |
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ID=47642167
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210447787.7A Active CN102927294B (en) | 2012-11-10 | 2012-11-10 | Y-shaped straight-through jacket gas-phase valve of bellows |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074988A (en) * | 2014-06-27 | 2014-10-01 | 浙江省泵阀产品质量检验中心 | Multi-angle combined and scouring-resistant slurry valve |
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
| CN114233868A (en) * | 2021-12-28 | 2022-03-25 | 江苏智能特种阀门有限公司 | Y-shaped jacket molten salt regulating valve |
Citations (10)
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| CN2127968Y (en) * | 1992-08-03 | 1993-03-10 | 王起超 | Temp. insulating material feeding valve |
| JPH0861537A (en) * | 1994-08-23 | 1996-03-08 | Ono Beroo Kogyo Kk | Fluid control valve |
| RU2142592C1 (en) * | 1998-06-03 | 1999-12-10 | Государственный космический научно-производственный центр им.М.В.Хруничева | Vent-safety valve |
| CN2559839Y (en) * | 2002-07-31 | 2003-07-09 | 李汉宝 | Piston guiding electromagnetic valve with high sealing performance |
| CN2763641Y (en) * | 2004-12-28 | 2006-03-08 | 中山市烟墩仪表电磁阀有限公司 | Piston type electromagnetic valve |
| US20060112704A1 (en) * | 2004-11-30 | 2006-06-01 | Davern Thomas J | Refrigerator damper with PTC heater actuation |
| CN2846908Y (en) * | 2005-08-18 | 2006-12-13 | 李汉宝 | Piston electrohydraulic valve for digital control |
| CN101865327A (en) * | 2010-06-13 | 2010-10-20 | 无锡智能自控工程有限公司 | Control valve with bellows reverse pressure-bearing sealing structure |
| CN201651439U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | High-frequency pneumatic one-way valve |
| CN202927064U (en) * | 2012-11-10 | 2013-05-08 | 无锡智能自控工程股份有限公司 | Gas phase valve with Y-shaped through clamping sleeve of corrugated pipe |
-
2012
- 2012-11-10 CN CN201210447787.7A patent/CN102927294B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2127968Y (en) * | 1992-08-03 | 1993-03-10 | 王起超 | Temp. insulating material feeding valve |
| JPH0861537A (en) * | 1994-08-23 | 1996-03-08 | Ono Beroo Kogyo Kk | Fluid control valve |
| RU2142592C1 (en) * | 1998-06-03 | 1999-12-10 | Государственный космический научно-производственный центр им.М.В.Хруничева | Vent-safety valve |
| CN2559839Y (en) * | 2002-07-31 | 2003-07-09 | 李汉宝 | Piston guiding electromagnetic valve with high sealing performance |
| US20060112704A1 (en) * | 2004-11-30 | 2006-06-01 | Davern Thomas J | Refrigerator damper with PTC heater actuation |
| CN2763641Y (en) * | 2004-12-28 | 2006-03-08 | 中山市烟墩仪表电磁阀有限公司 | Piston type electromagnetic valve |
| CN2846908Y (en) * | 2005-08-18 | 2006-12-13 | 李汉宝 | Piston electrohydraulic valve for digital control |
| CN201651439U (en) * | 2010-01-14 | 2010-11-24 | 威海博胜气动液压有限公司 | High-frequency pneumatic one-way valve |
| CN101865327A (en) * | 2010-06-13 | 2010-10-20 | 无锡智能自控工程有限公司 | Control valve with bellows reverse pressure-bearing sealing structure |
| CN202927064U (en) * | 2012-11-10 | 2013-05-08 | 无锡智能自控工程股份有限公司 | Gas phase valve with Y-shaped through clamping sleeve of corrugated pipe |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074988A (en) * | 2014-06-27 | 2014-10-01 | 浙江省泵阀产品质量检验中心 | Multi-angle combined and scouring-resistant slurry valve |
| CN113474584A (en) * | 2020-01-31 | 2021-10-01 | 株式会社石崎 | Check valve |
| US11828373B2 (en) | 2020-01-31 | 2023-11-28 | Ishizaki Co., Ltd. | Check valve |
| CN114233868A (en) * | 2021-12-28 | 2022-03-25 | 江苏智能特种阀门有限公司 | Y-shaped jacket molten salt regulating valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102927294B (en) | 2014-02-12 |
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