CN1912459A - Variation of pressure heat accumulator system with microsuperheat - Google Patents
Variation of pressure heat accumulator system with microsuperheat Download PDFInfo
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- CN1912459A CN1912459A CNA2005100572143A CN200510057214A CN1912459A CN 1912459 A CN1912459 A CN 1912459A CN A2005100572143 A CNA2005100572143 A CN A2005100572143A CN 200510057214 A CN200510057214 A CN 200510057214A CN 1912459 A CN1912459 A CN 1912459A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
A pressure variation heat accumulator with micro overheat is composed of heat accumulator, nozzle, circulation cylinder, distribution tube and primary steam-water separator. It is featured as setting a steam collection pocket at outlet of heat accumulator, setting secondary steam-water separator in said collector and setting flow-limiting jet pipe at outlet of steam collector.
Description
Technical field
The invention belongs to the mechanical engineering technical field, relate in particular to vapour source for being interrupted the place that takes place, for example the waste heat boiler steam of steelmaking converter is interrupted, a kind of being used for becomes the intermediate steam thermal source into continuous steam source, and the steam that produces continuously has the transformation steam accumulator of 10 ℃～20 ℃ the degree of superheat.
Background technology
Converter flue formula waste heat boiler becomes saturated vapor in the waste heat boiler drum to the heat recovery in the high temperature converter gas.Because the production of steel-making is periodical operation, thermal source is to be interrupted heat production, therefore, has only by the varying pressure thermal storage apparatus and could become continuous thermal source being interrupted thermal source, is used.In case when steel mill has the waste heat boiler of converter more than two or AOD stove, vapour source can be described as continuous basically, but because the oxygen blast process is interrupted, therefore the pressure oscillation and the flowed fluctuation of steam are all bigger, directly use the problem that still has poor stability, in this system, still need the steam of waste heat boiler output to be become the steam of continous-stable by the varying pressure thermal storage apparatus for the user.
Existing variable-pressure accumulator device as shown in Figure 1, the operation principle of variable-pressure accumulator device is that it is thermophore with water, high-pressure saturated steam sprays into storage heater 1 by inlet tube 12 and inlet non-return valve 5, steam distribution house steward 4, steam distribution arm 3, steam jet and circulation barrier part 2, the heat of thermal source high steam is stored in the high pressure saturation water, flash distillation takes place after utilizing the saturation water step-down then, saturation water becomes superheated water, seethe with excitement and spontaneous evaporation immediately, produce continuous saturated vapor, saturated vapor is by one-level crude separation device 6 input plant area steam nets.
Usually the thermal source working media is a steam water interface, saturation temperature is about 159 ℃～252 ℃, pressure 0.5MPa～the 4.0MPa that is everlasting, if the steam that reclaims can better make full use of, the operating pressure of thermal source waste heat boiler drum must be at 1.6MPa～4.0MPa, corresponding saturation temperature is about 204 ℃～252 ℃, can remain between 0.5MPa～1.5MPa substantially by the steam behind the variable-pressure accumulator device like this and move, and corresponding saturation temperature is about 159 ℃～201 ℃.
In production reality, main problem is present in release end of heat part, i.e. steam output end:
(1) accumulation of heat vapor outlet place only establishes one-level crude separation device 6 carbonated drink separation;
(2) steam (vapor) outlet band water is serious, is in wet-steam phase substantially, has come great difficulty for input plant area steam guipure, and not only fed distance is lacked but also is greatly limited for hot user's this part steam that utilizes effectively fully;
(3) outlet steam flow control difficulty;
(4) the outlet saturated vapor is in wet-steam phase, utilizes difficulty.
Summary of the invention
The transformation heat accumulator system that the purpose of this invention is to provide a kind of new structure, solve the problem of above-mentioned existence, outside not needing under the situation of supplying heat source, provide a kind of steam (vapor) outlet degree of superheat of storage heater reach 10 ℃～more than 20 ℃, realize the little overheated purpose of outlet steam, be beneficial to effective utilization of steam and incorporate steam pipe system into.
The present invention is achieved in that in the storage heater outlet plenum chamber is set, and installed the secondary water separator therein, can further isolate the water droplet in the steam, be provided with Laval current limliting jet pipe in the plenum chamber outlet simultaneously, again because the throttling action of this nozzle, to the water droplet that remain in the steam be evaporated once more, make saturated vapor become dry saturated steam, when vapour pressure sharply descends in steam delivery tube simultaneously, this flow limited nozzle will be placed restrictions on the steam flow that flows out and will be higher than a certain peak in storage heater, to prevent that sharply evaporation back water entrained by steam is too much in the storage heater, because current limliting jet pipe and common throttling and the adiabatic expansion effect of outlet valve, causing becomes the slight superheated steam with 5 ℃ of left and right sides degrees of superheat for dry saturated steam;
Under the situation of the present invention's supplying heat source outside not needing, provide a kind of steam (vapor) outlet degree of superheat of storage heater reach 10 ℃～more than 20 ℃, realize the little overheated purpose of outlet steam, adopted the secondary superheater to realize, the first order is overheated to be 5 ℃ overheated to 10 ℃ that realize by the throttling of saturated vapor and adiabatic expansion, the second level is overheated to be to realize by the heat exchange of heat exchange of heat pipe efficiently by the saturated vapor sensible heat of HTHP or the sensible heat of the high pressure saturation water in the storage heater, finally make the outlet steam the degree of superheat reach 10 ℃～more than 20 ℃, reached the little overheated of steam, be beneficial to effective utilization of steam and incorporate steam pipe system into.
Description of drawings
Fig. 1 is existing storage heater structure elevation.
Fig. 2 is a storage heater structure elevation of the present invention.
Fig. 3 is a storage heater structure side view of the present invention.
Fig. 4 is a storage heater structure vertical view of the present invention.
Among the figure, part 1 is a storage heater, and part 2 is steam jet and circulating barrel, part 3 is steam distribution arms, and part 4 is steam distribution house stewards, and part 5 is an inlet non-return valve, part 6 is the one-level water separator, and part 7 is an outlet non-return valve, and part 8 is a safety valve, part 9 is a Pressure gauge, and part 10 is a manhole, and part 11 is a make-up pipe, part 12 is the high-pressure saturated steam inlet tube, part 13 is outlet low-temp low-pressure saturated steam pipe, and part 14 is the secondary water separator, and part 15 is a plenum chamber, part 16 is a Laval current limliting jet pipe, part 17 is a tube connector, and part 18 is a transfer valve, and part 19 is heat pipe heat exchanging unit A, part 20 is the heat pipe heat exchanging unit B, part 21 and part 23 are the heat pipe-type heat exchanger tube, and part 22 and part 24 are dividing plate, and part 25 and part 27 are tube connector, part 26 and part 28 are outlet non-return valve, part 29 is for converging threeway, and part 30 is an inlet valve, and part 31 is for entering the storage heater steam inlet tube.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are further described:
Storage heater 1 setting pressure table 9, make-up pipe 11 and manhole 10, interior steam jet and the circulating barrel 2 of installing, one-level water separator 6, steam distribution arm 3 two ends are connected with circulating barrel 2 with steam distribution house steward 4 and steam jet respectively, high-pressure saturated steam inlet tube 12 is connected with heat pipe heat exchanging unit 20 by inlet non-return valve 5, plenum chamber 15 joins by pipeline 30 and storage heater 1, safety valve 8 is installed on the plenum chamber 15, Laval current limliting jet pipe 16 is installed in the plenum chamber 15, the secondary water separator 14 of storage heater is installed in the outlet of plenum chamber 15 interior conduits 30, is connected by tube connector 17 between plenum chamber 15 and the transfer valve 18; Heat pipe heat exchanging unit A 19 is connected with storage heater 1 with B 20, heat pipe-type heat exchanger tube 21,23 is installed in respectively in heat pipe heat exchanging unit A 19 and the B 20, by dividing plate 22,24 high temperature release end of heat and low temperature heat absorbing end are separated, join by tube connector 25,27 and outlet non-return valve 27,28, send pipe 13 with steam and join by converging threeway 29.
By the next HTHP saturated vapor 12 of waste heat boiler drum, after at first carrying out heat exchange with the slight overheated steam that exports by heat exchange unit B 20, by steam distribution house steward 4 and the arm 3 in the storage heater 1, water in 2 pairs of storage heaters of steam jet and circulating barrel 1 heats, the effect of circulating barrel is when steam sprays in the water by nozzle continuously, make water and the upwards back suitable for reading diffusion of outflow tube of vapour in the tube, at this moment descend because of flowing out the back local pressure mixing of tube internal upper part carbonated drink, the outer water of an end opening is flowed in the tube, so continuous circulative convection, making in the container up and down, the water temperature at each position is tending towards approaching, pressure in the container raises gradually, steam heats water in storage heater 1 and condenses into water, makes the heat enthalpy value of 1 li water of storage heater be elevated to and introduce the corresponding saturation water enthalpy of high-pressure steam pressure.When the hot user in the external world uses vapour, the pressure on storage heater 1 top begins to descend, steam is with regard to start vaporizer, the wet saturated steam of evaporation is by one-level water separator 6, behind the secondary water separator 14, enter plenum chamber 15, carry out throttling adiabatic expansion process and make water-drop evaporation in the wet saturated steam by being arranged on Laval current limliting jet pipes 16 in the plenum chamber 15 then, reach dry saturated steam and have the slight degree of superheat (degree of superheat more than 5 ℃ is arranged approximately), it also has when the pressure of steam outlet pipe sharply descends, the restriction saturated vapor is by outflow excessive in the storage heater 1, priming takes place when preventing storage heater 1 violent evaporation simultaneously, and water droplet enters jet chimney 13.
In order to make outlet steam keep the higher and stable degree of superheat, just must guarantee that outlet has the vapour source of high enough temp that dry saturated steam is heated, be provided with heat exchange unit A 19 and heat exchange unit B 20 in plenum chamber 15 exits, transfer valve group by the heat exchanger entrance place is controlled the flow direction that is heated dry saturated steam, heat exchange unit A 20 fills at storage heater to come into operation when vapour high temperature and high pressure steam source and steam user use system asynchronous, the high temperature and high pressure steam source that promptly enters the mouth stops (after stopping oxygen blast as converter, converter seat number is less than two when following), and the steam user is still using steam, for the degree of superheat that guarantees to export steam reaches 10 ℃～the degree of superheat more than 20 ℃, heat being heated dry saturated steam with regard to the sensible heat that must rely on the high-temperature high pressure water in the storage heater, the temperature end of its heat pipe heat exchanging pipe communicates with storage heater, and can guarantee to export steam has 10 ℃～the degree of superheat more than 20 ℃.Heat exchange unit B 20 fills at storage heater 1 to come into operation when vapour high temperature and high pressure steam source uses system identical with the steam user, vapour source also must be continuous in addition, many (more than three and three) are promptly arranged when the converter waste heat boiler exists, vapour source can guarantee to be continuous output basically fully, the outlet dry saturated steam carries out the sensible heat exchange by the saturated vapor of the HTHP of heat exchange unit B 20 and inlet, the temperature end of instant heating heat exchange tube and inlet steam pipe join, release end of heat joins with the outlet steam pipe, make the degree of superheat of outlet steam can reach 10 ℃～more than 20 ℃, and temperature stabilization.
The present invention mainly is suitable for pneumatic steelmaking apparatus for vapour-cooling and AOD stainless steel converter apparatus for vapour-cooling occasion, also can be used to have periodically produce the occasion that afterheat steam reclaims.The steam pressure of special vapour source and pressure differential with the vapour load preferably have the difference more than the 1.0MPa.
The present invention can use the occasion of one and one above steelmaking converter.The connected mode of storage heater 1 turnover steam is a series system.
Claims (6)
1. one kind with little overheated transformation heat accumulator system, by storage heater (1), nozzle and circulating barrel (2), distributing pipe (3,4), one-level steam-water separator (6) is formed, it is characterized in that a plenum chamber (15) being set, and installed secondary water separator (14) therein, be provided with Laval current limliting jet pipe (16) in the plenum chamber outlet simultaneously in storage heater (1) outlet.
2. the system as claimed in claim 1 it is characterized in that heat pipe heat exchanging unit (A 19, B20) joins with plenum chamber (15) outlet by transfer valve group (18), pipeline (17), and heat exchange unit (A 19, B 20) joins with storage heater (1).
3. the system as claimed in claim 1 is characterized in that the temperature end of heat pipe heat exchanging unit (A 19) is positioned in the saturation water of storage heater (1).
4. as claim 1,3 described systems, the heat exchanger tube (21,23) that it is characterized in that heat pipe heat exchanging unit (A 19, B 20) is the heat pipe-type heat exchanger tube that adopts, and heat absorbing end of its heat exchanger tube (21,23) and release end of heat are to adopt dividing plate (22,24) to carry out separated.
5. as claim 2,3 described systems, it is characterized in that the control of the inlet transfer valve group (18) of heat pipe heat exchanging unit (A 19, B 20) is carried out switch operating by pressure on the pipeline (12) and flow signal.
6. the system as claimed in claim 1 is characterized in that the vapour source inlet duct (12) of HTHP and low-temp low-pressure export jet chimney (13), are connected in series by storage heater 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100572143A CN100541102C (en) | 2005-08-09 | 2005-08-09 | A kind of with little overheated transformation heat accumulator system |
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| CNB2005100572143A CN100541102C (en) | 2005-08-09 | 2005-08-09 | A kind of with little overheated transformation heat accumulator system |
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| CN1912459A true CN1912459A (en) | 2007-02-14 |
| CN100541102C CN100541102C (en) | 2009-09-16 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564184A (en) * | 2012-02-16 | 2012-07-11 | 温岭市钱江化工机械有限公司 | Steam heat storage device |
| CN102944131A (en) * | 2012-11-20 | 2013-02-27 | 中国科学院工程热物理研究所 | Novel superheated steam storing device and method |
| CN103017141A (en) * | 2012-12-08 | 2013-04-03 | 磐石容器集团有限公司 | Novel steam auxiliary heating device |
| CN103017584A (en) * | 2012-12-12 | 2013-04-03 | 张德时 | Vertical superheated steam heat storage device |
| CN103953917A (en) * | 2014-04-16 | 2014-07-30 | 中冶南方工程技术有限公司 | Heat accumulation system structure capable of generating slightly-superheated steam |
| CN104359669A (en) * | 2014-11-27 | 2015-02-18 | 哈尔滨锅炉厂有限责任公司 | Heat accumulator with safety valve with super large displacement and conventional safety valve and heat accumulating method |
| CN106268404A (en) * | 2016-08-29 | 2017-01-04 | 青岛康泰重工机械有限公司 | Steam mixer |
| CN108871030A (en) * | 2018-08-06 | 2018-11-23 | 中冶赛迪工程技术股份有限公司 | A kind of steam accumulator for reinforcing heat preservation and temperature-adjustment pressure-adjustment using fume afterheat |
| CN116972673A (en) * | 2023-09-22 | 2023-10-31 | 国网江苏省电力有限公司常州供电分公司 | Novel steam heat storage tank and system based on composite condensation strengthening technology |
Families Citing this family (1)
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| CN102042767A (en) * | 2011-01-06 | 2011-05-04 | 宁夏华亿镁业股份有限公司 | Heat energy recovery system of slag of magnesium reducing furnace |
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2005
- 2005-08-09 CN CNB2005100572143A patent/CN100541102C/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564184B (en) * | 2012-02-16 | 2014-03-26 | 温岭市钱江化工机械有限公司 | Steam heat storage device |
| CN102564184A (en) * | 2012-02-16 | 2012-07-11 | 温岭市钱江化工机械有限公司 | Steam heat storage device |
| CN102944131A (en) * | 2012-11-20 | 2013-02-27 | 中国科学院工程热物理研究所 | Novel superheated steam storing device and method |
| CN102944131B (en) * | 2012-11-20 | 2014-03-12 | 中国科学院工程热物理研究所 | Superheated steam storing device and method |
| CN103017141A (en) * | 2012-12-08 | 2013-04-03 | 磐石容器集团有限公司 | Novel steam auxiliary heating device |
| CN103017584A (en) * | 2012-12-12 | 2013-04-03 | 张德时 | Vertical superheated steam heat storage device |
| CN103017584B (en) * | 2012-12-12 | 2013-09-11 | 张德时 | Vertical superheated steam heat storage device |
| CN103953917B (en) * | 2014-04-16 | 2015-12-02 | 中冶南方工程技术有限公司 | A kind of hold over system structure producing micro-superheated steam |
| CN103953917A (en) * | 2014-04-16 | 2014-07-30 | 中冶南方工程技术有限公司 | Heat accumulation system structure capable of generating slightly-superheated steam |
| CN104359669A (en) * | 2014-11-27 | 2015-02-18 | 哈尔滨锅炉厂有限责任公司 | Heat accumulator with safety valve with super large displacement and conventional safety valve and heat accumulating method |
| CN104359669B (en) * | 2014-11-27 | 2017-05-03 | 哈尔滨锅炉厂有限责任公司 | Heat accumulator with safety valve with super large displacement and conventional safety valve and heat accumulating method |
| CN106268404A (en) * | 2016-08-29 | 2017-01-04 | 青岛康泰重工机械有限公司 | Steam mixer |
| CN108871030A (en) * | 2018-08-06 | 2018-11-23 | 中冶赛迪工程技术股份有限公司 | A kind of steam accumulator for reinforcing heat preservation and temperature-adjustment pressure-adjustment using fume afterheat |
| CN108871030B (en) * | 2018-08-06 | 2024-03-12 | 中冶赛迪工程技术股份有限公司 | Steam heat accumulator for enhancing heat preservation, temperature adjustment and pressure adjustment by utilizing flue gas waste heat |
| CN116972673A (en) * | 2023-09-22 | 2023-10-31 | 国网江苏省电力有限公司常州供电分公司 | Novel steam heat storage tank and system based on composite condensation strengthening technology |
| CN116972673B (en) * | 2023-09-22 | 2023-12-12 | 国网江苏省电力有限公司常州供电分公司 | Novel steam heat storage tank and system based on composite condensation strengthening technology |
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| Publication number | Publication date |
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| CN100541102C (en) | 2009-09-16 |
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