CN1327158C - Desuperheating and decompressing device for steam - Google Patents
Desuperheating and decompressing device for steam Download PDFInfo
- Publication number
- CN1327158C CN1327158C CNB2005100413062A CN200510041306A CN1327158C CN 1327158 C CN1327158 C CN 1327158C CN B2005100413062 A CNB2005100413062 A CN B2005100413062A CN 200510041306 A CN200510041306 A CN 200510041306A CN 1327158 C CN1327158 C CN 1327158C
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- steam
- temperature
- valve
- hollow bar
- pressure
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- 239000000498 cooling water Substances 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009692 water atomization Methods 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 239000000779 smoke Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 230000006837 decompression Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000011176 pooling Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003416 augmentation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The present invention relates to a temperature and pressure reducing device for a steam supply system, which belongs to the technical field of equipment manufacture of comprehensive utilization of energy saving and heat energy. An electric actuating mechanism and a temperature and pressure reducing valve of the temperature and pressure reducing device for steam are connected, a temperature reducing water flow adjusting valve is connected with an inlet of a temperature reducing water atomization device, and a temperature, pressure and flow quantity adjusting system is connected with the electric actuating mechanism. The present invention is characterized in that a water inlet pipe is arranged on a casing of the temperature and pressure reducing valve, and a hollow rod which can axially slide and has a hollow structure is arranged in the casing; a sleeve pipe is arranged on the periphery of the hollow rod, and a plurality of tangential inclined holes are arranged on the hollow rod; each tangential inclined hole is corresponding to the outlet end of the water inlet pipe, and the hollow rod is connected with the electric actuating mechanism; a cage type valve core, the wall surface of which is provided with a porous structure is connected with one end of the hollow rod, and a valve sleeve of a steam inlet, which is in clearance fit with the cage type periphery and has a porous structure is arranged on the periphery of the cage type valve core.
Description
Technical field
The present invention relates to a kind of reducing-and-cooling plant that is used for steam supply system, belong to technical field energy-conservation and the heat integration device fabrication.
Background technique
The known Desuperheating and decompressing device for steam that is used for steam supply system is to utilize the purpose that the throttling of vapor stream is realized reducing vapor pressure at present, and utilization water spray in steam is realized the purpose of cooling.Though adopt custom-designed decompression, cooling system, but all exist complex structure, the problem that system is complicated, producing the high energy jet in the throttling not only fails to be used effectively on the contrary usually with erosion damage and vibration and the noise of its high-intensity energy generation to structure, the defective that usually exists in the desuperheat water spray process because of existing design, atomizing effect is bad when the device low-load, the bigger water droplet that existence can not be evaporated rapidly, the high speed steam flow carries the water droplet of failing in time to be evaporated and produces huge impact, the agent of erosion has further been aggravated the collapsing force to equipment, and produces problems such as vibration and noise.Therefore existing Desuperheating and decompressing device for steam (particularly in high temperature, high pressure operating mode) exists because of erosion damage, sealing surface and damages in early days and then cause leakage rate big; Vibration and noise are big; The low-load poor work stability, problem such as load regulation range is little.
Summary of the invention
The objective of the invention is in order to overcome the problem that existing Desuperheating and decompressing device for steam method exists, provide a kind of compact structure, the cooling water atomizing effect is good, effect of easing stress is good, equipment is corroded the Desuperheating and decompressing device for steam little, that noise is low, leakage rate is low, load regulation range is wide.
Purpose of the present invention can reach by following measure:
A kind of Desuperheating and decompressing device for steam, comprise electric actuator 1, steam converter valve 2, cooling water flow control valve 3 and temperature, pressure, flow control system 4, wherein electric actuator 1 links to each other with steam converter valve 2, cooling water flow control valve 3 links to each other with cooling water atomising device import 221, temperature, pressure, flow control system 4 links to each other with electric actuator 1, the housing 23 that it is characterized in that described steam converter valve 2 is provided with intake pipe 221, be provided with in the housing 23 can endwisely slip and for hollow structure hollow bar 223, the hollow bar 223 outer sleeve pipes 22 that are with, hollow bar 223 is provided with several tangential inclined holes 224, described tangential inclined hole 224 is corresponding with the outlet end of intake pipe 221, hollow bar 223 links to each other with electric actuator 1, one end of hollow bar 223 is connected with the cage spool 24 that its wall is provided with porous structure, the periphery setting of cage spool 24 and its Spielpassung and be the steam inlet valve pocket 25 of porous structure.
Purpose of the present invention can also reach by following measure:
The lower end of described steam inlet valve pocket 25 also is connected with the steam (vapor) outlet cover 26 of porous structure, in steam inlet valve pocket 25 inside cage spool 24 is housed.
The angle of described tangential inclined hole 224 is for being tilted to down.
The invention has the beneficial effects as follows:
1, the big water droplet that can not be evaporated does not rapidly promptly appear in the change that can change with the reducing-and-cooling plant changing load atomizing structure of spraying sectional area guarantee can both to guarantee enough to atomize under any load condition pressure reduction and then guarantee the atomizing quality; Water smoke sprays in the steam flow field of the pooling zone height turbulent fluctuation of the steam spray jet of porous cage steam throttling element, tiny droplet is broken rapidly evaporation in high velocity vapor jet field, the steam flow field of converging has simultaneously formed and has prevented that water droplet from invading and cut cushion pad, having prevented that water droplet from being carried to wash away by the high speed steam flow invades particularly key position such as sealing surface of seat of cutting device internal structure, guarantee that equipment performance improves the life-span, device good airproof performance leakage rate is little.
2, spray the atomizing structure of sectional area with reducing-and-cooling plant load synchronous change, spraying sectional area when low-load reduces, can guarantee that running on the lower load atomizing pressure reduction is enough, the atomizing quality is good and then guarantee that reducing-and-cooling plant does not produce because water droplet impacts noise, vibration and early stage damage of causing, so the stable operation range of this kind device is wide at running on the lower load.
3, the stability of the corresponding in addition circular concentric steam inlet of the aperture noise elimination structure valve pocket of the contributed efficient energy-dissipating structure of good atomization, steam spray jet and cage spool makes the noise of this device and vibration lower.
Description of drawings
Fig. 1 is a temperature reducing and pressure reducing system schematic representation of the present invention.
Fig. 2 is an overall structure schematic representation of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to view.
In Fig. 1, Fig. 2 and Fig. 3,1 is electric actuator, and 2 is steam converter valve, 3 is the cooling water flow control valve, and 4 is temperature, pressure, flow control system, and 21 is that valve rod, 22 is sleeve pipe, 221 is intake pipe, and 222 is hollow bar inner chamber, and 223 is the hollow bar, 224 is tangential inclined hole, and 225 is the cooling water ejiction opening, and 23 is housing, 24 is the cage spool, 25 is the steam inlet valve pocket, and 26 is the steam (vapor) outlet cover, and 27 is steam pipeline.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing and example.
Electric actuator 1, can adopt motor or cylinder is the driving operating device of power source, electric actuator 1 and cooling water flow control valve 3, these products all are commercially available qualitative products, valve rod 21 is made for stainless steel, cage spool 24, steam inlet valve pocket 25, structure steam (vapor) outlet cover 26 are stainless steel and make, and steam pipeline 27 is made for refractory steel or carbon steel.
Structurally the present invention is made up of electric actuator 1, steam converter valve 2, cooling water flow control valve 3 and temperature, pressure, flow control system 4.The cage spool 24 that steam converter valve 2 comprises valve rod 21, sleeve pipe 22, be installed in the housing 23 on steam pipeline 27 tops, be connected with hollow bar 223 bottoms, be enclosed within the outer steam inlet valve pocket 25 of cage spool 24 and form by the steam (vapor) outlet cover 26 of the porous structure that plays throttling, noise reduction effect in their bottoms.
Principle of the present invention is: adopt the water spraying atomization device of variable injecting sectional area to guarantee that enough atomizing pressure reduction can both be arranged under any load condition, guaranteed higher atomizing quality, the big water droplet that can not be evaporated rapidly promptly do not occur; Water smoke sprays in the steam flow field of the pooling zone height turbulent fluctuation of the steam spray jet of cage spool 24, tiny droplet is broken rapidly evaporation in high velocity vapor jet field, the steam flow field of converging has simultaneously formed and has prevented that water droplet from invading and cut cushion pad, has prevented from that water droplet from being carried to wash away to invade by the high speed steam flow to cut internal structure.This Desuperheating and decompressing device for steam comprises steam converter valve 2 (its inside comprises valve rod 21, cage spool 24, steam inlet valve pocket 25, steam (vapor) outlet cover 26, hollow bar 223), cooling water flow control valve 3, electric actuator 1 and temperature, pressure, flow control system 4 compositions, and the flow of the cooling water of 3 pairs of intake pipes 221 of cooling water flow control valve plays the coarse adjustment effect.
Wherein electro-pneumatic actuator 1 is positioned at the outer top of steam converter valve 2, link to each other with cage spool 24 by valve rod 21, hollow bar 223, the Lower Half of valve rod 21 is connected with hollow bar 223, it is hollow structure, it plays the swirling flow atomizing effect to cooling water, is cooling water ejiction opening 225 bottom, and cage spool 24 is a concentric structure with steam inlet valve pocket 25, cage spool 24 is placed in the steam inlet valve pocket 25, and the bottom also has steam (vapor) outlet cover 26.Steam inlet valve pocket 25 has throttling, falls hot-tempered, anti-blocking effect.Steam (vapor) outlet cover 26 has throttling, falls hot-tempered effect.Cage spool 24 can be done the piston-like motion under the promotion of hollow bar 223 when work, change the relative position between cage spool 24 and the steam inlet valve pocket 25, change the number that throttle orifice is opened, and then high temperature, high pressure steam through-current capability in the change pipeline, realize adjustment and control to valve outlet place pressure.The relative position of adjusting between cage spool 24 and the steam inlet valve pocket 25 according to the deviation between Desuperheating and decompressing device for steam outlet vapor pressure and the pre-provisioning request pressure is the pressure and temperature reducing valve opening, this work is finished by electro-pneumatic actuator, opens the opening width of big steam converter valve when device outlet vapor pressure is lower than pre-provisioning request pressure; When being higher than pre-provisioning request pressure, device outlet vapor pressure turns down the aperture of opening of steam converter valve.
Cooling water enters the hollow bar 223 that places one with steam converter valve 2 by pressure and temperature reducing valve body 2 tops by intake pipe 221, hollow bar 223 is that one and hollow bar 223 are one section hollow tubular structure with the valve rod 21 of steam converter valve, on the tube wall of hollow bar inner chamber 222, press the emission direction of valve rod 21 travel position and cooling water and the relation between the flow, have a series of tangential inclined holes 224 under oblique, when needing, behind valve rod 21 downward certain strokes, the tangential inclined hole of some 224 is open-minded, the entrance point that is tangential inclined hole 224 just communicates with the outlet end of intake pipe 221, cooling water enters in the internal cavities of hollow bar 223 by tangential inclined hole 224, realize throttling, decompression, Shi Xuan, the number of opening by tangential inclined hole 224, realization is to the accurate adjustment joint of the cooling water flow that sprays into hollow bar inner chamber 222, the flow that the system of pressing needs, pressure and moving direction are from cooling water ejiction opening 225 ejections of the bottom of hollow bar 223, because tangential inclined hole 224 is tangent with the wall of hollow bar inner chamber 222, cooling water enters into hollow bar inner chamber 222 processes by intake pipe 221, after by tangential inclined hole 224 original water column being divided into some little water columns earlier, again in 222 rotations of hollow bar inner chamber, because cooling water has been executed by tangential inclined hole 224 and has been revolved before the ejection, water body is torn up the form ejection with water smoke under action of centrifugal force, water smoke is just in time in the steam flow field of the pooling zone height turbulent fluctuation of the steam spray jet of porous cage steam throttling element, it is very strong with the effect of further tearing up water droplet to conduct heat, tiny droplet is broken rapidly evaporation heat absorption in high velocity vapor jet field, realize the desuperheat effect, also played decompression in the time of to the steam desuperheat.
Accurately adjust the spray water flux that sprays into according to the deviation between Desuperheating and decompressing device for steam outlet steam temperature and the pre-provisioning request temperature, this work is finished by temperature control valve (TCV), when the device outlet steam temperature is lower than pre-provisioning request temperature, turn down temperature control valve (TCV), when the device outlet steam temperature is higher than pre-provisioning request temperature, drive big temperature control valve (TCV).
High compressed steam is communicated with cage spool 24 by the porous structure of steam inlet by steam inlet valve pocket 25, drive hollow bar 223 by valve rod 21 by electric actuator 1, drive cage spool 24 by hollow bar 223, make it in sleeve pipe 22, do the piston-like motion up and down, thereby change the relative position between spool 24 and the valve pocket 25, thereby change the number that throttle orifice is opened, and then high temperature, high pressure steam through-current capability in the change pipeline, realize adjustment and control to the outlet pressure of steam converter valve.Spray water to hollow bar inner chamber 222 by intake pipe 221, form water smoke, water smoke is entered in the cage spool 24 by the cooling water ejiction opening, by water smoke high temperature, high pressure steam is carried out desuperheat, and the steam behind the pressure and temperature reducing is discharged by the porous structure on the steam (vapor) outlet cover 26 of porous structure and led to steam (vapor) outlet.
The atomising device of cooling water is by intake pipe 221 and hollow bar inner chamber 222, and can be in sleeve pipe 22 hollow bar 223 in axial sliding, tangential inclined hole 224 on the hollow bar 223 and hollow bar 223 bottom cooling water ejiction openings 225 are formed, its hollow core bar 223 can move under the effect of electro-pneumatic actuator to axial with hollow bar inner chamber 222, and hollow bar inner chamber 222 is connected by tangential inclined hole 224 with intake pipe 221.
The cooling water ejiction opening is positioned at the steam jet stream doab at steam decompression throttle element cage type spool 24 centers, has in a large number entad aperture on the wall of cage type spool 24, and steam ejects from the hole, the center of directive cylindrical spool.The high speed steam flow plays a part broken water droplet, augmentation of heat transfer simultaneously, and stops water droplet to rush at the air cushion of structure.
Claims (3)
1, a kind of Desuperheating and decompressing device for steam, comprise electric actuator (1), steam converter valve (2), cooling water flow control valve (3) and temperature, pressure, flow control system (4), wherein electric actuator (1) links to each other with steam converter valve (2), cooling water flow control valve (3) links to each other with intake pipe (221), temperature, pressure, flow control system (4) links to each other with electric actuator (1), the housing (23) that it is characterized in that described steam converter valve (2) is provided with intake pipe (221), be provided with in the housing (23) can endwisely slip and for hollow structure hollow bar (223), the outer sleeve pipe (22) that is with of hollow bar (223), hollow bar (223) is provided with several tangential inclined holes (224), described tangential inclined hole (224) is corresponding with the outlet end of intake pipe (221), hollow bar (223) links to each other with electric actuator (1), one end of hollow bar (223) is connected with the cage spool (24) that its wall is provided with porous structure, the periphery setting of cage spool (24) and its Spielpassung and be the steam inlet valve pocket (25) of porous structure.
2, Desuperheating and decompressing device for steam according to claim 1 is characterized in that the lower end of described steam inlet valve pocket (25) is connected with the steam (vapor) outlet cover (26) of porous structure, is equipped with described cage spool (24) in steam inlet valve pocket (25) inside.
3, Desuperheating and decompressing device for steam according to claim 1, the angle that it is characterized in that described tangential inclined hole (224) is for being tilted to down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100413062A CN1327158C (en) | 2005-08-03 | 2005-08-03 | Desuperheating and decompressing device for steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100413062A CN1327158C (en) | 2005-08-03 | 2005-08-03 | Desuperheating and decompressing device for steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731002A CN1731002A (en) | 2006-02-08 |
| CN1327158C true CN1327158C (en) | 2007-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100413062A Expired - Fee Related CN1327158C (en) | 2005-08-03 | 2005-08-03 | Desuperheating and decompressing device for steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1327158C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102183006A (en) * | 2010-12-28 | 2011-09-14 | 杭州华惠阀门有限公司 | High-temperature high-pressure temperature-reducing pressure-reducing device capable of being started and stopped rapidly |
| ITMI20112004A1 (en) * | 2011-11-04 | 2013-05-05 | Parcol S P A | ATOMIZER DEVICE FOR STEAM ATTACHMENT |
| CN114087536B (en) * | 2020-08-24 | 2024-03-19 | 惠生工程（中国）有限公司 | Steam pipe network interlocking control method for turbine jump |
| CN114060528B (en) * | 2022-01-17 | 2022-04-15 | 艾肯（江苏）工业技术有限公司 | Be used for steam system atomizing integral type pressure relief device that reduces temperature |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048745A (en) * | 1989-07-10 | 1991-01-23 | 基斯通国际集团公司 | Improved modulating valve |
| CN1050082A (en) * | 1989-08-24 | 1991-03-20 | 基斯通国际集团公司 | The decompression and the modulating valve that have improved |
| US5380470A (en) * | 1992-08-26 | 1995-01-10 | Btg Kalle Inventing Ab | Method and apparatus for reducing the pressure and temperature of steam in a steam conditioning valve |
| JP2005048639A (en) * | 2003-07-31 | 2005-02-24 | Toshiba Corp | Steam valve device and steam turbine power generation plant equipped with steam flow control system including the same |
| CN1587761A (en) * | 2004-08-16 | 2005-03-02 | 上海平安高压调节阀门厂 | Low pressure by-path changing valve |
| CN2816563Y (en) * | 2005-08-03 | 2006-09-13 | 南京汉唐机电设计研究有限公司 | Steam temperature-reducing pressure-reducing device |
-
2005
- 2005-08-03 CN CNB2005100413062A patent/CN1327158C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048745A (en) * | 1989-07-10 | 1991-01-23 | 基斯通国际集团公司 | Improved modulating valve |
| CN1050082A (en) * | 1989-08-24 | 1991-03-20 | 基斯通国际集团公司 | The decompression and the modulating valve that have improved |
| US5380470A (en) * | 1992-08-26 | 1995-01-10 | Btg Kalle Inventing Ab | Method and apparatus for reducing the pressure and temperature of steam in a steam conditioning valve |
| JP2005048639A (en) * | 2003-07-31 | 2005-02-24 | Toshiba Corp | Steam valve device and steam turbine power generation plant equipped with steam flow control system including the same |
| CN1587761A (en) * | 2004-08-16 | 2005-03-02 | 上海平安高压调节阀门厂 | Low pressure by-path changing valve |
| CN2816563Y (en) * | 2005-08-03 | 2006-09-13 | 南京汉唐机电设计研究有限公司 | Steam temperature-reducing pressure-reducing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1731002A (en) | 2006-02-08 |
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