CN1118189A - Steam desuperheating valve - Google Patents
Steam desuperheating valve Download PDFInfo
- Publication number
- CN1118189A CN1118189A CN94191212A CN94191212A CN1118189A CN 1118189 A CN1118189 A CN 1118189A CN 94191212 A CN94191212 A CN 94191212A CN 94191212 A CN94191212 A CN 94191212A CN 1118189 A CN1118189 A CN 1118189A
- Authority
- CN
- China
- Prior art keywords
- steam
- cooling water
- piston
- basket
- hole
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/12—Controlling superheat temperature by attemperating the superheated steam, e.g. by injected water sprays
- F22G5/123—Water injection apparatus
- F22G5/126—Water injection apparatus in combination with steam-pressure reducing valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Valves (AREA)
- Nozzles (AREA)
- Temperature-Responsive Valves (AREA)
- Lift Valve (AREA)
- Treatment Of Fiber Materials (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The steam desuperheating valve has a housing (4) with a steam inlet (1), a cooling water inlet (3) and a steam outlet (2). In the housing (4) there are a perforated basket (11) forming a depressurising chamber and an axially movable control piston (5) controlling the flow of steam and cooling water to the depressurising chamber. The control piston (5) is rigidly coupled to a perforated cylinder (6) axially movable in the perforated basket (11). This perforated cylinder (6) releases or blocks the steam inlet into the perforated basket (11) and the steam outlet into a second depressurising chamber (10) arranged around the perforated basket (11). Into the perforated basket (11) projects a coaxial nozzle pipe (14) which is connected outside the perforated basket (11) to the cooling water inlet (3). Inside the perforated basket (11) the nozzle pipe (14) has injection apertures (15) for the cooling water (W). Outside the perforated basket (11) the nozzle pipe (14) projects into the steam outlet (2) and has an injection nozzle (16) at that point for the cooling water (W). A first piston section (7) movable with the control piston (5) in the nozzle pipe (14) alternately opens and closes the injection apertures (15) in the nozzle pipe (14). A second piston section (8) regulates the cooling water inlet (3) in the size of the through-flow cross-section (X) for the flow of cooling water into the injection apertures (15) in the depressurising chamber and/or into the injection nozzle (16) in the steam outlet (2). The second depressurising chamber (10) surrounding the perforated basket (11) is connected via through-flow apertures (17) to the steam outlet (2) forming a third depressurising chamber.
Description
The present invention relates to a kind of steam desuperheating valve that reduces steam pressure and vapor (steam) temperature.This valve is used in the power plant and uses in the enterprise of steam in batches (for example textile finishing enterprise, printing and dyeing mill etc.).
This steam desuperheating valve has a housing with a steam inlet, a cooling water inlet and a steam (vapor) outlet.Be provided with a release chamber and a control piston of controlling steam and cooling water flux in the housing.For reducing temperature, cooling water is sprayed in the vapours, cooling water is carburation by evaporation immediately then.The cooling water inflow that sprays into should be complementary with concrete quantity of steam (sub-load or full load).The cooling water that sprays into not only all must be vaporized when operation at part load but also when full load is moved fully, otherwise can form water droplet, and it can cause very big erosion and temperature jump damage.
In known steam desuperheating valve, there are in some valves step-down and cooling separately carry out, also have in some valves in step-down, cooling water controlledly to be sprayed in the release chamber.The place of great changes appearred in quantity of steam when step-down and cooling steam desuperheating valve separately preferably were used in operation.Change very little situation for quantity of steam, great majority adopt step-down and cooling water to spray into the steam desuperheating valve that carries out simultaneously.
The objective of the invention is, a kind of steam desuperheating valve is provided, this valve can controllably spray into the pressure that reduces steam in the release chamber simultaneously with cooling water reliably without a doubt when operation at part load, steam step-down and spraying into separately of cooling water in the release chamber are carried out.
Above-mentioned purpose is realized by the feature of the characteristic of claim 1.Thereafter dependent claims comprises some architectural features, and these characteristic indications favourable form of implementation of the present invention.
This steam desuperheating valve has a housing with a steam inlet, a cooling water inlet and a steam (vapor) outlet, be provided with in the housing hole basket that constitutes a release chamber and control lead to the steam of release chamber and cooling water flow, can axially movable control piston.This control piston and an energy axially movable tubular hole cylinder in the basket of hole are rigidly connected, utilize this hole cylinder that the inlet of vapor stream hand-hole basket and vapor stream are gone into around the port opening or the sealing of the second release chamber that the hole basket is provided with.Stretched into a coaxial jet pipe in the basket of hole, this jet pipe links to each other with the cooling water inlet in basket outside, hole.Jet pipe has some cooling water entrances in the inside of the hole basket that constitutes the release chamber, in basket outside, hole, a nozzle is arranged on jet pipe, and this nozzle stretches in the steam (vapor) outlet zone.Control piston can move and utilize a cooling water spout in the piston piece opening and closing of fault jet pipe in jet pipe, that utilizes that second piston piece make control piston control cooling water inlet makes cooling water flow to spout and/or flow to the size of the through flow cross section of nozzle.
Like this, cooling water not only sprays into the release chamber through spout when operation at part load, step-down simultaneously, and in the steam step-down after nozzle sprays into the steam (vapor) outlet zone.When full load was moved, all cooling water sprayed into the steam (vapor) outlet zone through nozzle after the steam step-down.
Cooling water sprays into and vaporization fully under sub-load and full load operation without a doubt.This means that steam desuperheating valve has higher operational reliability and long life-span.
An embodiment shown in the drawings elaborates to it below.In the accompanying drawing:
Fig. 1 is a sectional view by steam desuperheating valve in the closed position;
Fig. 1 a is the through flow cross section figure of cooling water inlet;
Fig. 2 is by being in a sectional view of the steam desuperheating valve under the part opening.
Steam desuperheating valve has the housing (4) of carrying vapour inlet (1), a cooling water inlet (3) and a steam (vapor) outlet (2).In housing (4), be provided with a hole basket (11) that constitutes a release chamber and control steam and cooling water to the release chamber mobile, can axially movable control piston (5).Control piston (5) with one can be in hole basket (11) axially movable hole cylinder (6) rigidly connected.Inlet and steam that this hole cylinder (6) unlatching and closed steam (D) enter hole basket (11) enter around the outlet of the second release chamber (10) that hole basket (11) is provided with.A coaxial jet pipe (14) extend in the hole basket (11), and this jet pipe links to each other with cooling water inlet (3) in the outside of hole basket (11).In hole basket (11) inside, jet pipe (14) has the spout (15) of some cooling waters (W).In hole basket (11) outside, jet pipe (14) extend in the steam (vapor) outlet (2) and a nozzle (16) that is used for cooling water (W) is arranged there.
First piston spare (7) that can move in jet pipe (14) with control piston (5) makes spout (15) opening and closing of fault in succession in the jet pipe (14).The size of the through flow cross section (X) of second piston piece (8) control cooling water inlet (3) is with flowing of the spout (15) of control cooling water in the release chamber and/or flowing of nozzle (16) in the steam (vapor) outlet (2).
The second release chamber (10) that surrounds hole basket (11) links to each other with the steam (vapor) outlet (2) that constitutes the 3rd release chamber through through-flow mouthful (17).
Tubular hole cylinder (6) is divided into two parts with difference in functionality.On the axial length zone that matches in itself and steam inlet (1), this hole cylinder (6) has pressure relief vent (6a), be used for steam and enter hole basket (6), and the axial length that matches with the second release chamber (10) zone is as the dividing wall (6b) of sealing, is used for alternately opening the pressure relief vent with blind hole basket (11).
Two piston pieces (7,8) of control piston (5) are made whole, wherein, at two piston pieces (7, a piston rod (20) is arranged 8), constitute a ring casing (13) between it and the jet pipe (14), be used to make the spout (15) of cooling water flow to jet pipe (14).Preferably metal piston ring packing part (9) of two piston pieces (7,8), airtight and watertight ground obtains guiding in jet pipe (414).
The through flow cross section (X) of cooling water inlet (3) has a pre-control cross section that drips shape, and its a big tee section is towards the spout (15) of jet pipe (14).Substitute the pre-control cross section that drips shape, the through flow cross section of cooling water inlet (3) can be made of a plurality of its identical and/or different pre-control holes of size.
Be provided with one second (outward) hole basket (12) around the hole basket (11), unload as another and arbitrarily downgrade, this hole basket utilizes a dividing wall (12a) to abut on the endoporus basket (11), and outer hole basket (12) is divided into two hole sections.
Control piston (5) is surrounded by a hole basket (18) on the height of steam inlet (1), and vapor stream is crossed the aperture of this hole basket, so that flow into around control piston (5) as far as possible equably.
Two piston pieces (7 of control piston (5), 8) axial spacing between is to determine like this, when promptly the spout (15) in jet pipe (14) is in the detent position that is sealed by first piston spare (7) (referring to Fig. 1), the whole through flow cross section (X) of cooling water inlet (3) is opened and is sealed towards nozzle (16) direction towards spout (15) direction by second piston piece (8) that is positioned on the end position.
In order to open steam desuperheating valve, hole cylinder (6) and control piston (5) are partly pulled out (referring to Fig. 2) together from hole basket (11).Also partly open simultaneously the pressure relief vent of the pressure relief vent (6a) of the hole cylinder (6) that makes steam enter hole basket (11) and dividing wall (6b) hole that seal, that the be used for steam (vapor) outlet basket (11) by hole cylinder (6) thus.When the operation at part load position, the spout (15) of jet pipe (14) is partly or wholly opened by first piston spare (7).The through flow cross section (X) of cooling water inlet (3) is then not only all discharged towards spout (15) direction but also towards nozzle (16) direction by second piston piece (8) and come at this moment.
Under the full load operation, on the second end position that its spout along jet pipe (14) (15) direction of being positioned at second piston piece (8) moves, when this position, through flow cross section (X) complete opening, cooling water is to mobile being closed of the spout (15) of jet pipe (14), and cooling water is to the mobile complete opening of nozzle (16).That is when this position, there is not cooling water (W) to spray in the hole basket (11) that constitutes the release chamber.
Quantity of steam to be cooled is many more, and needed cooling water is also just many more.For cooling water (W) is vaporized fully, the release volume of hole basket (11) is just no longer enough.For fear of forming harmful water droplet,, increasing cooling water (W) is sprayed in the zone of steam (vapor) outlet (2) through nozzle (16) along with the increase of quantity of steam.When full load was moved, whole cooling water (W) all sprayed into herein.
In order to spray into cooling water (W), also additionally make cooling water form eddy current herein through nozzle (16).The swept volume of control piston (5) top links to each other with the part that can contact with steam of housing (4) through a balance channel (19).
Claims (8)
1. steam desuperheating valve, comprise a housing with a steam inlet, a cooling water inlet and a steam (vapor) outlet, a hole basket that constitutes a release chamber and control are set in the housing lead to the steam and control piston cooling water flow, that can move vertically of release chamber, it is characterized in that
A) control piston (5) is rigidly connected with an energy axially movable tubular hole cylinder (6) in hole basket (11), this hole cylinder is opened and the inlet and the steam of closed steam (D) ostium basket (11) flow into an outlet around the second release chamber (10) that hole basket (11) is provided with
B) a coaxial jet pipe (14) stretches in the hole basket (11), this jet pipe links to each other with cooling water inlet (3) in hole basket (11) outside, have some spouts (15) of being used for cooling water (W) in hole basket (11) inside and have a nozzle (16) that is used for cooling water (W) in hole basket (11) outside
C) control piston (5) can move in jet pipe (14), and have a first piston spare (7) and one second piston piece (8), the spout (15) in the jet pipe (14) can be opened and seal to this first piston spare, this second piston piece control cooling water inlet (3) make cooling water flow to spout (15) and/or flow to the size of the through flow cross section (X) of nozzle (16).
D) steam (vapor) outlet (2) with formation the 3rd release chamber links to each other through through-flow mouthful (17) in the release chamber (10) that surrounds hole basket (11), and nozzle (6) extend in this steam (vapor) outlet (2).
2. press the steam desuperheating valve of claim 1, it is characterized in that, hole cylinder (6) has the pressure relief vent (6a) that is used for the steam inlet on the axial length zone that matches with steam inlet (1), on the axial length zone that matches with the second release chamber (10), then constitute the dividing wall (6b) of sealing, used alternately open and blind hole basket (11) in pressure relief vent.
3. press the steam desuperheating valve of claim 1 and 2, it is characterized in that, two piston pieces (7 of control piston (5), 8) make an integral body, at two piston pieces (7, a piston rod (20) is set 8), constitutes a ring casing (13) that makes cooling water flow toward the spout (15) of jet pipe (14) between this piston rod and the jet pipe (14).
4. by the steam desuperheating valve of one of claim 1 to 3, it is characterized in that two piston pieces (7,8) of control piston (5) obtain guiding with watertight ground airtightly by means of piston ring packing part (9) in jet pipe (14).
5. by the steam desuperheating valve of one of claim 1 to 4, it is characterized in that the through flow cross section (X) of cooling water inlet (3) has a pre-control cross section that drips shape, its a big shape pre-control cross section is towards the spout (15) of jet pipe (14).
6. by the steam desuperheating valve of one of claim 1 to 4, it is characterized in that the through flow cross section (X) of cooling water inlet (3) is made of the identical and/or different pre-control hole of a plurality of sizes.
7. press the steam desuperheating valve of one of claim 1 to 6, it is characterized in that, two piston pieces (7 of control piston (5), 8) axial spacing between is to determine like this, promptly at the spout (15) of jet pipe (14) during by the detent position of first piston spare (7) sealing, the whole through flow cross section of cooling water inlet (3) is opened and is sealed along nozzle (16) direction along spout (15) direction by second piston piece (8) that is positioned on the end position, when first piston spare (7) is partly or wholly opened the position of spout (15) of jet pipe (14), the through flow cross section (X) of cooling water inlet (3) is opened along spout (15) direction with along nozzle (16) direction by second piston piece (8), and the through flow cross section (X) of cooling water inlet (3) is a complete opening when second piston piece (8) is in along the second end position that spout (15) direction of jet pipe (14) moves, cooling water is towards mobile being closed of the spout (15) of jet pipe (14), and cooling water is a complete opening towards the mobile of nozzle (16).
8. press the steam desuperheating valve of one of claim 1 to 7, it is characterized in that, hole basket (11) be provided with on every side one unload as another arbitrarily downgrade second (outside) hole basket (12), this outer hole basket utilizes a dividing wall to abut in endoporus basket (11) and goes up and this outer hole basket (12) is divided into two hole sections.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4304972A DE4304972C2 (en) | 1993-02-18 | 1993-02-18 | Steam conversion valve |
| DEP4304972.9 | 1993-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1118189A true CN1118189A (en) | 1996-03-06 |
Family
ID=6480775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94191212A Pending CN1118189A (en) | 1993-02-18 | 1994-02-14 | Steam desuperheating valve |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0685054B1 (en) |
| JP (1) | JPH08506886A (en) |
| CN (1) | CN1118189A (en) |
| AT (1) | ATE147494T1 (en) |
| AU (1) | AU6109294A (en) |
| DE (2) | DE4304972C2 (en) |
| DK (1) | DK0685054T3 (en) |
| ES (1) | ES2098924T3 (en) |
| RU (1) | RU2118749C1 (en) |
| WO (1) | WO1994019646A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356261A (en) * | 2009-03-16 | 2012-02-15 | 西门子公司 | Combined quick acting control valve for a steam turbine |
| CN112081932A (en) * | 2020-10-09 | 2020-12-15 | 四川泰诺流体控制技术有限公司 | Bypass valve |
| CN113654035A (en) * | 2021-08-20 | 2021-11-16 | 射阳金港能源发展有限公司 | Automatic control system and method for temperature and pressure reduction of regional cooling and heating steam |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5385121A (en) * | 1993-01-19 | 1995-01-31 | Keystone International Holdings Corp. | Steam desuperheater |
| DE19719120C2 (en) * | 1997-05-07 | 2000-10-12 | Schneider Bochumer Maschf A | Device for cooling superheated steam |
| DE19917246C2 (en) * | 1999-04-16 | 2003-10-30 | Holter Gmbh & Co | Steam-Conditioning |
| DE19960065B4 (en) * | 1999-12-13 | 2011-04-14 | Theo Beurskens | Steam forming valve in straight form |
| DE202012003033U1 (en) * | 2012-03-23 | 2013-06-26 | Vag-Armaturen Gmbh | Needle Valve |
| DE102014212786A1 (en) | 2014-07-02 | 2016-01-07 | Erhard Gmbh & Co. Kg | Needle Valve |
| CN108708978B (en) * | 2018-08-24 | 2023-10-13 | 无锡卓尔阀业有限公司 | Integrated multi-stage pressure reducing and temperature reducing device |
| CN109833985B (en) * | 2019-03-14 | 2020-09-04 | 重庆川仪调节阀有限公司 | Atomizing nozzle structure of temperature reducing valve |
| SE1930345A1 (en) * | 2019-10-24 | 2021-04-25 | Bvt Sweden Ab | A Steam Conditioning Valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2713150A1 (en) * | 1977-03-25 | 1978-09-28 | Schneider Bochumer Maschf A | Steam pressure converter - with perforated moving and stationary closure elements |
| US4442047A (en) * | 1982-10-08 | 1984-04-10 | White Consolidated Industries, Inc. | Multi-nozzle spray desuperheater |
| DE3304523A1 (en) * | 1983-02-10 | 1984-08-16 | Holter Regelarmaturen Gmbh & Co Kg, 4815 Schloss Holte-Stukenbrock | STEAM FORMING VALVE |
| DE3323990C2 (en) * | 1983-07-02 | 1986-09-04 | Welland & Tuxhorn, 4800 Bielefeld | Multi-stage, regulated throttle device |
| DE3720918C1 (en) * | 1987-06-25 | 1988-11-24 | Welland & Tuxhorn | Steam reducing valve |
| DD286635A5 (en) * | 1989-07-03 | 1991-01-31 | Veb Gaskombinat "Fritz Selbmann",De | SHAKE FOR BUCKET BAGGER |
| DE59103579D1 (en) * | 1990-09-29 | 1995-01-05 | Siemens Ag | Steam converter valve with spindle drive. |
-
1993
- 1993-02-18 DE DE4304972A patent/DE4304972C2/en not_active Expired - Fee Related
-
1994
- 1994-02-14 AU AU61092/94A patent/AU6109294A/en not_active Abandoned
- 1994-02-14 EP EP94907564A patent/EP0685054B1/en not_active Expired - Lifetime
- 1994-02-14 DE DE59401539T patent/DE59401539D1/en not_active Expired - Lifetime
- 1994-02-14 RU RU95119996A patent/RU2118749C1/en active
- 1994-02-14 JP JP6518621A patent/JPH08506886A/en active Pending
- 1994-02-14 WO PCT/EP1994/000411 patent/WO1994019646A1/en active IP Right Grant
- 1994-02-14 ES ES94907564T patent/ES2098924T3/en not_active Expired - Lifetime
- 1994-02-14 AT AT94907564T patent/ATE147494T1/en not_active IP Right Cessation
- 1994-02-14 DK DK94907564.2T patent/DK0685054T3/en active
- 1994-02-14 CN CN94191212A patent/CN1118189A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102356261A (en) * | 2009-03-16 | 2012-02-15 | 西门子公司 | Combined quick acting control valve for a steam turbine |
| CN102356261B (en) * | 2009-03-16 | 2013-08-07 | 西门子公司 | Combined quick acting control valve for a steam turbine |
| CN112081932A (en) * | 2020-10-09 | 2020-12-15 | 四川泰诺流体控制技术有限公司 | Bypass valve |
| CN113654035A (en) * | 2021-08-20 | 2021-11-16 | 射阳金港能源发展有限公司 | Automatic control system and method for temperature and pressure reduction of regional cooling and heating steam |
| CN113654035B (en) * | 2021-08-20 | 2023-08-04 | 射阳金港能源发展有限公司 | Automatic control system and method for temperature and pressure reduction of regional cooling and heating steam |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4304972A1 (en) | 1994-08-25 |
| ES2098924T3 (en) | 1997-05-01 |
| DK0685054T3 (en) | 1997-07-14 |
| DE4304972C2 (en) | 1996-12-05 |
| JPH08506886A (en) | 1996-07-23 |
| EP0685054A1 (en) | 1995-12-06 |
| AU6109294A (en) | 1994-09-14 |
| WO1994019646A1 (en) | 1994-09-01 |
| ATE147494T1 (en) | 1997-01-15 |
| DE59401539D1 (en) | 1997-02-20 |
| RU2118749C1 (en) | 1998-09-10 |
| EP0685054B1 (en) | 1997-01-08 |
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Legal Events
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| 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 |