CN204438078U - A kind of jockey of Steam Heating start up system - Google Patents
A kind of jockey of Steam Heating start up system Download PDFInfo
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- CN204438078U CN204438078U CN201420804671.9U CN201420804671U CN204438078U CN 204438078 U CN204438078 U CN 204438078U CN 201420804671 U CN201420804671 U CN 201420804671U CN 204438078 U CN204438078 U CN 204438078U
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- pressure
- pressure heaters
- cold vapour
- vapour system
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000002955 isolation Methods 0.000 claims description 10
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- 230000004888 barrier function Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
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- 239000000779 smoke Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000006477 desulfuration reaction Methods 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
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- 239000002002 slurry Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The utility model discloses a kind of jockey of Steam Heating start up system, comprise cold vapour system again, the cold vapour system again of adjacent machine, intermediate pressure cylinder draw gas, No. two high-pressure heaters, No. three high-pressure heaters, externally arranged steam cooler.Wherein, described cold vapour system is again connected described No. two high-pressure heaters again with after the parallel connection of described adjacent machine cold vapour system again; Described intermediate pressure cylinder draws gas and connects described externally arranged steam cooler and described No. three high-pressure heaters successively; The cold vapour system again of described adjacent machine connects described intermediate pressure cylinder to draw gas and between the entrance of described externally arranged steam cooler by arranging jet chimney, or the cold vapour system again of described adjacent machine connects between the outlet of described externally arranged steam cooler and described No. three high-pressure heaters by arranging jet chimney.Owing to achieving putting into operation of No. two high-pressure heaters or No. three high-pressure heaters in start-up course, high-pressure heater heat-shock startup stage of can avoiding, improves high-pressure heater safety in operation and service life.
Description
Technical field
The utility model relates to coal-fired power generator set field, particularly relates to a kind of New junction device being applied to the Steam Heating start up system of Turbo-generator Set.
Background technology
Steam Heating start-up technique is a kind of novel Turbo-generator Set start-up technique, and Chinese patent ZL 2,007 10046960.1 " starting method of band circulating-stove-water pump monotube boiler near steam heating boilers " and ZL 2,007 10046959.9 " dewatering capacity-enlarging starts the starting method of monotube boiler near steam heating boilers " individually discloses the application of this technology on band boiler water circulating pump direct current cooker starts and dewatering capacity-enlarging direct current cooker starts.This technology can make boiler just be in the thermal environment of " hot stove, hot blast " when lighting a fire; The burnout rate startup stage of improving, greatly reduce the oil smoke of the igniting of traditional heavy wool and plasma ignition fashionable in the recent period generation, do not burn coal dust amount, therefore electric precipitation can drop into early, significantly improves the environmental benefit in this stage; Effective control boiler startup stage because of elder generation's " dry combustion method " afterwards " quenching " and cause oxide skin to generate fast, concentrate come off, hoard and block, finally cause boiler tube bursting and turbine blade to weather; And alleviate the oil smoke sticking problem of catalyst surface and do not burn sintering (the even burn) problem of coal dust to catalyst; The pollution that the startup stage of avoiding, high carbonaceous soot or a large amount of oil gas produce desulfurization slurry; Also can make relatively shorten start-up time simultaneously, particularly when unit very hot startup, Steam Heating is utilized to feed water, substantially reduce the temperature difference of feed temperature and the minimum permission inflow temperature of boiler, boiler feed water condition can be met as early as possible, thus reach after substantially reducing boiler main fuel trip again igniting require the time used, decrease the fuel oil in start-up course, fire coal and plant consumption, comprehensively reduce startup energy consumption significantly.
Fig. 1 is the connected mode about Steam Heating start up system therrmodynamic system in prior art.In Fig. 1, the admission of No. three high-pressure heaters is then the back-steam drawn gas to externally arranged steam cooler heat exchange from intermediate pressure cylinder.
Wherein, the connected mode of therrmodynamic system is: the cold vapour system again of adjacent machine extremely starts No. two high-pressure heaters of unit by pipeline, pipeline is provided with the respective valves such as barrier valve, non-return valve, control valve successively, wherein, control valve mainly controls No. two high-pressure heater pressure, and then controls the feed temperature of No. two high-pressure heater outlets, in start-up course, control valve is in full-gear usually, to improve feed temperature by No. two high-pressure heaters as much as possible.
But this connected mode has following shortcoming:
The feedwater temperature rise that No. two high-pressure heaters are born is excessive.Owing to only having No. two high-pressure heaters in start-up course, feedwater is heated, its feedwater temperature rise is equivalent to original No. three high-pressure heater temperature rises and No. two high-pressure heater temperature rise sums, under accidental conditions, its temperature rise amplitude has exceeded the temperature rise of No. two high-pressure heater VWO operating modes, when the heating efficiency of oxygen-eliminating device is not enough, its temperature rise also will improve, and be unfavorable for the safe operation of high-pressure heater.
Therefore, those skilled in the art is devoted to develop a kind of Novel connection type being applied to Steam Heating and starting always, both the feedwater temperature rise that No. two high-pressure heaters are born had been reduced, promote the safety in operation of No. two high-pressure heaters, the needs of temperature rise of feeding water can be met again in Steam Heating start-up course.
Utility model content
Because the above-mentioned defect of prior art, the feedwater temperature rise being reduction No. two high-pressure heaters and bearing to be solved in the utility model, and meet in Steam Heating start-up course the needs of temperature rise of feeding water.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of jockey of Steam Heating start up system, at least comprise cold vapour system again, the cold vapour system again of adjacent machine, intermediate pressure cylinder draw gas, No. two high-pressure heaters, No. three high-pressure heaters, externally arranged steam cooler, it is characterized in that, described cold vapour system is again connected described No. two high-pressure heaters again with after the parallel connection of described adjacent machine cold vapour system again; Described intermediate pressure cylinder draws gas and connects described externally arranged steam cooler and described No. three high-pressure heaters successively.
The cold vapour system again of described adjacent machine connects described intermediate pressure cylinder to draw gas and between the entrance of described externally arranged steam cooler by arranging jet chimney.
Alternatively, the cold vapour system again of described adjacent machine connects between the outlet of described externally arranged steam cooler and described No. three high-pressure heaters by arranging jet chimney.
The adjustment doors that described jet chimney is arranged is at least one;
The isolation door that described jet chimney is arranged is at least one;
In technique scheme, the executing agency of described adjustment doors can adopt the modes such as pneumatic, electronic; Described isolation door can adopt gate valve, stop valve, and the executing agency of described isolation door can be electronic mode or manual mode.
Preferably, the aperture size of described adjustment doors controls according to the pressure of described No. three high-pressure heaters, thus controls the outlet feed temperature of described No. three high-pressure heaters, realizes controlling the feedwater temperature rise of described No. three high-pressure heaters.
Preferably, in start-up course, when the feed temperature needed is not high, cold for described adjacent machine vapour system again can be connected the valve closing on the jet chimney of described No. two high-pressure heaters, thus cut off the steam source of No. two high-pressure heaters, and utilize the cold vapour system again of described adjacent machine to connect the jet chimney of described No. three high-pressure heaters, realize putting into operation separately No. three high-pressure heaters, and utilize the adjustment doors on described jet chimney to control the vapour lateral pressure of described No. three high-pressure heaters, realize the control to described No. three high-pressure heaters outlet feed temperature.Along with the carrying out of start-up course, when needing to improve feed temperature further, then No. two high-pressure heaters that put into operation further.
The beneficial effects of the utility model are:
The jockey of this Steam Heating start up system, can to put into operation No. two high-pressure heaters and No. three high-pressure heaters flexibly according to the needs of feed temperature in start-up course.Owing to achieving putting into operation of No. two high-pressure heaters or No. three high-pressure heaters in start-up course, high-pressure heater heat-shock startup stage of can avoiding, improves high-pressure heater safety in operation and service life.
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, to those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the jockey schematic diagram of Steam Heating start up system in prior art;
Fig. 2 is the jockey schematic diagram of the utility model specific embodiment;
Fig. 3 is the jockey schematic diagram of another specific embodiment of the utility model;
In figure: 1 is the cold vapour system again of adjacent machine; 2 is cold vapour systems again; 3 is No. two high-pressure heaters; 4 is that intermediate pressure cylinder draws gas; 5 is No. three high-pressure heaters; 6 is externally arranged steam cooler; 7 is jet chimneys; 71 is adjustment doors; 72 is isolation doors.
Detailed description of the invention
In order to technique scheme of the present utility model can be understood better, describe in detail further below in conjunction with drawings and Examples.
The utility model provides a kind of jockey of Steam Heating start up system, by setting up the jet chimney of the cold steam again of adjacent machine to the machine No. three high-pressure heaters on existing Steam Heating start up system basis, and adjustment doors is set on jet chimney, and barrier valve is set after adjustment doors.In start-up course, by No. three high-pressure heaters that put into operation flexibly, realize in the heating of No. three high-pressure heaters to feedwater, therefore, No. two high-pressure heater feedwater temperature rises can obtain corresponding reduction, thus improve the safety in operation of high-pressure heater.
Embodiment one
Concrete, if Fig. 2 is for showing, being a detailed description of the invention of the present utility model, comprising cold vapour system again 2, the cold vapour system again 1 of adjacent machine, intermediate pressure cylinder draw gas 4, No. two high-pressure heaters 3, No. three high-pressure heaters 5, externally arranged steam cooler 6.Wherein, described cold vapour system again 2 is connected described No. two high-pressure heaters 3 again with after the parallel connection of described adjacent machine cold vapour system again 1;
Described intermediate pressure cylinder draws gas and 4 connects described externally arranged steam cooler 6 and described No. three high-pressure heaters 5 successively;
The cold vapour system again 1 of described adjacent machine connects described intermediate pressure cylinder draw gas between 4 and the entrance of described externally arranged steam cooler 6 by arranging jet chimney 7.
Described jet chimney is arranged adjustment doors 71 and isolation door 72;
Further, the adjustment doors 71 described jet chimney 7 arranged is at least one;
Further, the isolation door 72 described jet chimney 7 arranged is at least one;
Embodiment two
Concrete, if Fig. 3 is for showing, being another detailed description of the invention of the present utility model, comprising cold vapour system again 2, the cold vapour system again 1 of adjacent machine, intermediate pressure cylinder draw gas 4, No. two high-pressure heaters 3, No. three high-pressure heaters 5, externally arranged steam cooler 6.Wherein, described cold vapour system again 2 is connected described No. two high-pressure heaters 3 again with after the parallel connection of described adjacent machine cold vapour system again 1;
Described intermediate pressure cylinder draws gas and 4 connects described externally arranged steam cooler 6 and described No. three high-pressure heaters 5 successively;
The cold vapour system again 1 of described adjacent machine connects between the outlet of described externally arranged steam cooler 6 and described No. three high-pressure heaters 5 by arranging jet chimney 7.
Described jet chimney is arranged adjustment doors 71 and isolation door 72;
Further, the adjustment doors 71 described jet chimney 7 arranged is at least one;
Further, the isolation door 72 described jet chimney 7 arranged is at least one;
Following table is that existing system jockey and jockey of the present utility model are for the application example under certain gigawatt unit grade start operating performance, be not difficult to find, after application the utility model jockey, because No. three high-pressure heaters assume responsibility for the feedwater temperature rise of 32 DEG C, namely the temperature rise that No. two high-pressure heaters are born have dropped 32 DEG C, 60 DEG C are dropped to from 92 DEG C corresponding to adjacent machine operating mode 1, drop to 42 DEG C corresponding to adjacent machine operating mode 2 from 74 DEG C, therefore improve the property safe and reliable to operation of No. two high-pressure heaters.
The method of operation: startup stage, first utilize the cold vapour system again 1 of adjacent machine to complete it and operate to the machine externally arranged steam cooler 6 or to the heating coil of the jet chimney 7 of No. three high-pressure heaters 5; After heating coil terminates, utilize adjustment doors 71, promote the pressure of No. three high-pressure heaters 5 gradually, according to system cloud gray model needs, until the arbitrary pressure below its rated pressure, generally should exceed oxygen-eliminating device pressure 4-5bar.After finishing No. three high-pressure heaters 5, if feed temperature has met run needs, then No. two high-pressure heaters 3 that put into operation are not needed.When feed temperature need to raise further and the saturation temperature corresponding more than No. three specified extraction pressures of high-pressure heater 5 time, then need No. two high-pressure heaters 3 that put into operation.Now, utilize the isolation door of the cold vapour system again of adjacent machine 1 to the machine No. two high-pressure heaters 3, open this valve gradually, control No. two high-pressure heater 3 vapour lateral pressures and progressively rise until valve wide open.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that the ordinary skill of this area just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection domain of claims.
Claims (4)
1. the jockey of a Steam Heating start up system, at least comprise cold vapour system again, the cold vapour system again of adjacent machine, intermediate pressure cylinder draw gas, No. two high-pressure heaters, No. three high-pressure heaters, externally arranged steam cooler, it is characterized in that, described cold vapour system is again connected described No. two high-pressure heaters again with after the parallel connection of described adjacent machine cold vapour system again; Described intermediate pressure cylinder draws gas and connects described externally arranged steam cooler and described No. three high-pressure heaters successively.
2. the jockey of Steam Heating start up system as claimed in claim 1, is characterized in that, the cold vapour system again of described adjacent machine connects described intermediate pressure cylinder to draw gas and between the entrance of described externally arranged steam cooler by arranging jet chimney.
3. the jockey of Steam Heating start up system as claimed in claim 1, it is characterized in that, the cold vapour system again of described adjacent machine connects between the outlet of described externally arranged steam cooler and described No. three high-pressure heaters by arranging jet chimney.
4. the jockey of Steam Heating start up system as claimed in claim 2 or claim 3, it is characterized in that, the adjustment doors that described jet chimney is arranged is at least one, and the isolation door that described jet chimney is arranged is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804671.9U CN204438078U (en) | 2014-12-18 | 2014-12-18 | A kind of jockey of Steam Heating start up system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420804671.9U CN204438078U (en) | 2014-12-18 | 2014-12-18 | A kind of jockey of Steam Heating start up system |
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| Publication Number | Publication Date |
|---|---|
| CN204438078U true CN204438078U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420804671.9U Expired - Fee Related CN204438078U (en) | 2014-12-18 | 2014-12-18 | A kind of jockey of Steam Heating start up system |
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| CN (1) | CN204438078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990060A (en) * | 2015-07-24 | 2015-10-21 | 东方电气集团东方锅炉股份有限公司 | Passive protection device for steam cooler system |
| CN111322607A (en) * | 2020-03-16 | 2020-06-23 | 陕西宝鸡第二发电有限责任公司 | Control system and control method for early starting of high-pressure heater |
-
2014
- 2014-12-18 CN CN201420804671.9U patent/CN204438078U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990060A (en) * | 2015-07-24 | 2015-10-21 | 东方电气集团东方锅炉股份有限公司 | Passive protection device for steam cooler system |
| CN111322607A (en) * | 2020-03-16 | 2020-06-23 | 陕西宝鸡第二发电有限责任公司 | Control system and control method for early starting of high-pressure heater |
| CN111322607B (en) * | 2020-03-16 | 2022-04-15 | 陕西宝鸡第二发电有限责任公司 | Control system and control method for early starting of high-pressure heater |
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Granted publication date: 20150701 |