CN101418873A - Main stopping valve for supercharged steam generator - Google Patents
Main stopping valve for supercharged steam generator Download PDFInfo
- Publication number
- CN101418873A CN101418873A CNA200810229054XA CN200810229054A CN101418873A CN 101418873 A CN101418873 A CN 101418873A CN A200810229054X A CNA200810229054X A CN A200810229054XA CN 200810229054 A CN200810229054 A CN 200810229054A CN 101418873 A CN101418873 A CN 101418873A
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- handwheel
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Abstract
The invention relates to a main steam stop valve of a supercharged boiler applicable to the field of boilers. The main steam stop valve consists of a valve body, a valve disc, a valve stem, a gear box, a gear wheel, a hand wheel, a gear shaft, a piston rod, a piston ring base, a piston ring and a piston body, wherein the valve body is arranged on the valve disc. A lower end, in the valve body, of the valve stem is connected with the valve disc. The valve stem is provided with a sealing ring. The valve body is provided and fixed with a valve cover. A fitting and a gland bush is arranged on the valve cover and outside the valve stem. An upper end of the valve stem is connected with the valve stem by a nut. The upper end of the valve stem is provided with the gear box and the gear wheel. The gear wheel is meshed with a pinion on the gear shaft. A mediate gear arranged on the gear shaft is meshed with a pinion arranged on the hand wheel. The piston ring base and the piston ring are arranged at a lower end of the piston rod and arranged in the piston body. A piston cover is arranged on the piston. A filling and a gland bush is arranged on an upper part of the piston cover and outside the piston rod. A middle part of the valve stem is connected with one end of each of two transverse plates through pin shafts, while the other end is connected with a piston rod of a servo mechanism. The device has the advantages of advanced design, prolonged service life and drive by the hand wheel and the servo mechanism, no influence from environment temperature and relatively high opening and closing speed.
Description
Technical field: the present invention relates to a kind of main stopping valve for supercharged steam generator in field of boilers.
Background technique: main stopping valve for supercharged steam generator belongs to by the class valve, is a kind of closed circuit valve that switches on or off pipeline fully, and it generally is made up of major parts such as actuator (handwheel), valve rod, valve body, valve gap, flap (closure member) and filler devices.Handwheel links to each other with valve rod, and passes to flap by valve rod, makes flap along the to-and-fro motion of valve seat axial direction, thereby pipeline is switched on or off.Because the medium temperature of boiler pipe system is about 500 ℃, can reach about 480 ℃, if adopt handwheel to drive, will bring great inconvenience to operation, can threaten operator's personal safety.China industrial pipeline system is a large amount of at present uses by the class valve.Therefore develop a kind of main stopping valve for supercharged steam generator is new problem anxious to be solved always.
Summary of the invention: the purpose of this invention is to provide a kind of advanced design, rational in infrastructure, improve working life, drive and adopt handwheel and two kinds of devices of servomechanism, not influenced by ambient temperature, main stopping valve for supercharged steam generator with higher switching speed.
The object of the present invention is achieved like this: main stopping valve for supercharged steam generator, whole device is by valve body, valve disc, seal ring, valve gap, valve rod, transverse slat, Stem Mut, gear-box, gearwheel, handwheel, gear shaft, middle gear, small gear, bearing pin, gland, filler, piston rod, piston cap, the piston ring base, piston ring, piston body is formed, valve disc is installed on valve body, valve rod lower end in valve body links to each other with valve disc, seal ring is installed on the valve rod, on valve body, be provided with valve gap and fixing, on valve gap, reach outside filler and the gland installed of valve rod, the valve rod upper end links to each other with Stem Mut, and at valve rod upper end mounting teeth roller box and gearwheel, pinion on gearwheel and the gear shaft, middle gear on the gear shaft and the pinion on the handwheel, at piston-rod lower end ring installation base and piston ring and be contained in the piston body, piston cap is installed on piston, on piston cap top and outside filler and the gland installed of piston rod, the middle part of valve rod links to each other with two transverse slat one ends by bearing pin, and the other end of transverse slat links to each other with the piston rod of servomechanism by bearing pin; Its working principle is: main stopping valve for supercharged steam generator is connected with servomechanism by transverse slat, when the piston body of servomechanism moves, by the lifting of tabularium ovable valve stem, to open or throttle down; The rotation of gear and Stem Mut makes the valve rod lifting when handwheel rotates, to open or throttle down; Be that main stopping valve for supercharged steam generator has two kinds of driving mode: a kind of mode is that the piston of servomechanism moves by steam driven, the unlatching of realization valve or close; Another kind of mode is by the unlatching of handwheel driving realization valve or closes; This structure has higher switching speed, and applicability is stronger, and is not influenced by ambient temperature when the operator is worked because working medium is that temperature is the steam about 500 ℃, eliminates hidden danger; In case servomechanism is malfunctioning, can adopt handwheel drive to realize the unlatching of valve or close.
Main points of the present invention are the structural type and the working principle of its product.Its working principle is: main stopping valve for supercharged steam generator is connected with servomechanism by transverse slat, when the piston body of servomechanism moves, by the lifting of tabularium ovable valve stem, to open or throttle down; The rotation of gear and Stem Mut makes the valve rod lifting when handwheel rotates, to open or throttle down; Be that main stopping valve for supercharged steam generator has two kinds of driving mode: a kind of mode is that the piston of servomechanism moves by steam driven, the unlatching of realization valve or close; Another kind of mode is by the unlatching of handwheel driving realization valve or closes; This structure has higher switching speed, and applicability is stronger, and is not influenced by ambient temperature when the operator is worked because working medium is that temperature is the steam about 500 ℃, eliminates hidden danger; In case servomechanism is malfunctioning, can adopt handwheel drive to realize the unlatching of valve or close.
Main stopping valve for supercharged steam generator compared with prior art, has advanced design, rational in infrastructure, improve working life, the piston of the servomechanism of main stopping valve for supercharged steam generator moves by steam driven, realize the unlatching of valve or close, also can handwheel drive the unlatching that realizes valve or close, structure has higher switching speed, applicability is stronger, because working medium is that temperature is the steam about 500 ℃, it is not influenced by ambient temperature when the operator is worked, eliminate hidden danger, in case servomechanism is malfunctioning, can adopt handwheel drive to realize the unlatching of valve or advantage such as close, will be widely used in the field of boilers.
Description of drawings: concrete structure of the present invention is provided by following example and accompanying drawing thereof.
Fig. 1 is a structural representation of the present invention.
Embodiment:
With reference to accompanying drawing, main stopping valve for supercharged steam generator, whole device is by valve body 1, valve disc 2, seal ring 3, valve gap 4, valve rod 5, transverse slat 6, Stem Mut 7, gear-box 8, gearwheel 9, handwheel 10, gear shaft 11, middle gear 12, small gear 13, bearing pin 14, gland 15, filler 16, piston rod 17, piston cap 18, piston ring base 19, piston ring 20, piston body 21 is formed, valve disc 2 is installed on valve body 1, valve rod 5 lower ends in valve body 1 link to each other with valve disc 2, seal ring 3 is installed on the valve rod 5, on valve body 1, be provided with valve gap 4 and fixing, on valve gap 4, reach valve rod 5 outside filler 16 and the glands 15 installed, valve rod 5 upper ends link to each other with Stem Mut 7, and at valve rod 5 upper end mounting teeth roller box 8 and gearwheels 9, small gear 13 engagements on gearwheel 7 and the gear shaft 11, middle gear 12 on the gear shaft 11 and 13 engagements of the small gear on the handwheel 10, at piston rod 17 lower end ring installation bases 19 and piston ring 20 and be contained in the piston body 21, piston cap 18 is installed on piston 21, on piston cap 18 tops and outside filler 16 and the glands 15 installed of piston rod 17, the middle part of valve rod 5 links to each other with two transverse slat 6 one ends by bearing pin 14, and the other end of transverse slat 6 links to each other with the piston rod 17 of servomechanism by bearing pin 14; Its working principle is: main stopping valve for supercharged steam generator is connected with servomechanism by transverse slat 6, when the piston body 21 of servomechanism moves, drives valve rod 5 liftings by transverse slat 6, to open or throttle down; Gear and Stem Mut 7 rotations make valve rod 5 liftings, to open or throttle down when handwheel 10 rotations; Be that main stopping valve for supercharged steam generator has two kinds of driving mode: a kind of mode is that the piston of servomechanism moves by steam driven, the unlatching of realization valve or close; Another kind of mode is by the unlatching of handwheel 10 driving realization valves or closes; This structure has higher switching speed, and applicability is stronger, and is not influenced by ambient temperature when the operator is worked because working medium is that temperature is the steam about 500 ℃, eliminates hidden danger; In case servomechanism is malfunctioning, can adopts handwheel 10 to drive the unlatching that realizes valves or close.
Claims (2)
1, a kind of main stopping valve for supercharged steam generator, whole device is by valve body, valve disc, seal ring, valve gap, valve rod, transverse slat, Stem Mut, gear-box, gearwheel, handwheel, gear shaft, middle gear, small gear, bearing pin, gland, filler, piston rod, piston cap, the piston ring base, piston ring, piston body is formed, it is characterized in that: valve disc is installed on valve body, valve rod lower end in valve body links to each other with valve disc, seal ring is installed on the valve rod, on valve body, be provided with valve gap and fixing, on valve gap, reach outside filler and the gland installed of valve rod, the valve rod upper end links to each other with Stem Mut, and at valve rod upper end mounting teeth roller box and gearwheel, pinion on gearwheel and the gear shaft, middle gear on the gear shaft and the pinion on the handwheel, at piston-rod lower end ring installation base and piston ring and be contained in the piston body, piston cap is installed on piston, on piston cap top and outside filler and the gland installed of piston rod, the middle part of valve rod links to each other with two transverse slat one ends by bearing pin, and the other end of transverse slat links to each other with the piston rod of servomechanism by bearing pin.
2, main stopping valve for supercharged steam generator according to claim 1, it is characterized in that: its working principle is: main stopping valve for supercharged steam generator is connected with servomechanism by transverse slat, when the piston body of servomechanism moves, by the lifting of tabularium ovable valve stem, to open or throttle down; The rotation of gear and Stem Mut makes the valve rod lifting when handwheel rotates, to open or throttle down; Be that main stopping valve for supercharged steam generator has two kinds of driving mode: a kind of mode is that the piston of servomechanism moves by steam driven, the unlatching of realization valve or close; Another kind of mode is by the unlatching of handwheel driving realization valve or closes; This structure has higher switching speed, and applicability is stronger, and is not influenced by ambient temperature when the operator is worked because working medium is that temperature is the steam about 500 ℃, eliminates hidden danger; In case servomechanism is malfunctioning, can adopt handwheel drive to realize the unlatching of valve or close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810229054XA CN101418873A (en) | 2008-11-26 | 2008-11-26 | Main stopping valve for supercharged steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810229054XA CN101418873A (en) | 2008-11-26 | 2008-11-26 | Main stopping valve for supercharged steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101418873A true CN101418873A (en) | 2009-04-29 |
Family
ID=40629803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810229054XA Pending CN101418873A (en) | 2008-11-26 | 2008-11-26 | Main stopping valve for supercharged steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101418873A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384300A (en) * | 2011-10-26 | 2012-03-21 | 哈尔滨工程大学 | Electric-manual double-acting semi-balance large-depth sea suction stop valve |
| CN102588636A (en) * | 2012-03-17 | 2012-07-18 | 鞍钢集团矿业公司 | Heat load regulating device for boiler safety valve and regulating method thereof |
-
2008
- 2008-11-26 CN CNA200810229054XA patent/CN101418873A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102384300A (en) * | 2011-10-26 | 2012-03-21 | 哈尔滨工程大学 | Electric-manual double-acting semi-balance large-depth sea suction stop valve |
| CN102588636A (en) * | 2012-03-17 | 2012-07-18 | 鞍钢集团矿业公司 | Heat load regulating device for boiler safety valve and regulating method thereof |
| CN102588636B (en) * | 2012-03-17 | 2013-07-10 | 鞍钢集团矿业公司 | Heat load regulating device for boiler safety valve and regulating method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090429 |