CN203687140U - Heat supplying network accident standby steam source system - Google Patents
Heat supplying network accident standby steam source system Download PDFInfo
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- CN203687140U CN203687140U CN201420044981.5U CN201420044981U CN203687140U CN 203687140 U CN203687140 U CN 203687140U CN 201420044981 U CN201420044981 U CN 201420044981U CN 203687140 U CN203687140 U CN 203687140U
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- steam
- pipeline
- heat
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- subsequent use
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 230000015556 catabolic process Effects 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 abstract 2
- 238000009833 condensation Methods 0.000 abstract 2
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 241000196171 Hydrodictyon reticulatum Species 0.000 description 4
- 239000008400 supply water Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model relates to a heat supplying network accident standby steam source system. The heat supplying network accident standby steam source system comprises a standby steam system and a standby draining system. The standby steam system is connected with an industrial steam pipeline of a standby heat supplying network and a heating steam extracting mother pipe of a heat supplying network steam water heat exchanging initial station through a pipeline. The pipeline of the standby steam system is provided with a temperature and pressure reducing valve, and the two sides of the temperature and pressure reducing valve are provided with a first electric isolating valve and a second electric isolating valve respectively. The standby draining system is connected with a draining pipeline of the heat supplying network steam water heat exchanging initial station and a condensation water pipeline of the standby heat supplying network through a pipeline. The pipeline of the standby draining system is provided with a check valve and a second isolating valve, and the check valve is close to the condensation water pipeline. The heat supplying network accident standby system is added to achieve the purpose of guaranteeing the heat supplying for an urban outer network when a heater for the heating supplying network breaks down and stops working in the extension project of a thermal power plant, and the heat supplying reliability of the extension project of the thermal power plant is greatly improved.
Description
Technical field
The utility model relates to the heating system in Thermal Power Station, particularly the standby steam source system in heating system.
Background technology
Heating system in Thermal Power Station is mainly to utilize extracted steam from turbine that low parameter steam is provided, and heats heat supply network recirculated water backwater by heat exchangers for district heating, makes heat supply network recirculated water supply water temperature reach the heat request that supplies of city outer net.More original heating system is mainly made up of heat supply network recirculated water water supply line, water return pipeline, circulation pump of heat-supply network, heat exchangers for district heating and heat dissipation equipment.
The extension project of Thermal Power Station increases gradually in recent years, and engineering is normally built consideration by two units in when design simultaneously, and in fact, often occurs that a certain unit of extension project is postponed than another unit.Before the whole bringing normally into operation of all units, extension project often only has a unit normally to move.If extension project is just at construction period, at a time when when winter heating arriving, need to solve the supply heat problem of extension project to Yingcheng City outer net; And in heat supplying process, also need to the freezing angle of hot user's heating system consider when preventing extension project unit full cut-off, increase breakdown accident of heat-supply network back-up system.
If adopt old factory hot water net for the second stage of heat supply network, investigate according to reality, old factory hot water net heat supply breach is under normal circumstances very large, old factory heat network system is oepration at full load in the time that heat supply network drops into, old factory heat capacity is without any surplus, that is to say, if extension project is drawn a part of hot water from Lao Chang, can have a strong impact on the external heat supply water reticulation system of old factory.In addition, under accident conditions, extension project heat supply network recirculated water is by the words that are full of consideration, old factory hot water net pressure of supply water is low compared with extension project hot water net pressure of supply water, old factory hot net water cannot be introduced hot net water of extension project, forms flow regime, therefore can not adopt this scheme to design back-up system.
Conventionally old brand-name computer group has long-term no industrial steam vapour source or other vapour sources, and quantity of steam is enough, vapour source parameter is not less than heat exchangers for district heating vapour parameter 0.4MPa, 241 DEG C, can be used as heat supply network for subsequent use and use, designing accordingly rational scheme increases breakdown accident of heat-supply network standby steam source system.
Utility model content
The utility model technical issues that need to address are to provide a kind of breakdown accident of heat-supply network standby steam source system, the heat supply of city outer net are ensured to problem when tackling steam power plant's extension project heat exchangers for district heating forced shutdown, improve reliability of heat-supply system.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Breakdown accident of heat-supply network standby steam source system, comprise vapour system for subsequent use and draining system for subsequent use, described vapour system for subsequent use connects the industrial steam pipeline of heat supply network for subsequent use and the heating steam extraction head of heat supply network steam-water heat exchanging initial station by pipeline, on the pipeline of described vapour system for subsequent use, steam converter valve is set, described steam converter valve both sides arrange respectively an electronic isolating valve and No. two electronic isolating valves; Described draining system for subsequent use connects the drain water piping of heat supply network steam-water heat exchanging initial station and the condensing water conduit of heat supply network for subsequent use by pipeline, and check-valves and No. two isolating valves are set on the pipeline of described draining system for subsequent use, and described check-valves is near condensing water conduit setting.
Further improvement of the utility model is: on described drain water piping, near oxygen-eliminating device side, isolating valve is set No. one.
Owing to having adopted technique scheme, the obtained technological progress of the utility model is:
The utility model, by increasing breakdown accident of heat-supply network standby steam source system, has greatly improved reliability of heat-supply system in steam power plant's extension project.By vapour system for subsequent use, the industrial steam for subsequent use of heat supply network for subsequent use is guided on the heating steam extraction head of heat supply network steam-water heat exchanging initial station, ensure the steam supply of heat supply network steam-water heat exchanging initial station, the steam converter valve of steam regulation temperature and pressure is set on the pipeline of vapour system for subsequent use, ensure the supply stability of steam for subsequent use, two electronic isolating valves have been set, while resuming operation simultaneously after heating system is fixed a breakdown, two electronic isolating valves cut out, can stop steam supply for subsequent use.
By draining system for subsequent use, condensed water in the drain water piping of heat supply network steam-water heat exchanging initial station is drawn and is back to heat supply network for subsequent use, on the oxygen-eliminating device side hydrophobic pipeline near heat supply network steam-water heat exchanging initial station, increase isolating valve one, the pipeline of draining system for subsequent use is connected to the oxygen-eliminating device system of heat supply network for subsequent use, control valve adopts existing heat supply network steam-water heat exchanging initial station to the control valve on the heat supply network hydrophobic pipeline of oxygen-eliminating device, signal is still taken from the hydrophobic liquid level of heat supply network vapor-water heat exchanger, therefore on the draining system pipeline for subsequent use newly increasing, control valve needn't be set again, only need to be at close one check-valves of heat supply network condensing water conduit for subsequent use setting, heat supply network steam-water heat exchanging initial station drain water piping near oxygen-eliminating device near newly-increased one isolating valve, solve condensate water has been caused to the long problem of heat supply network oxygen-eliminating device systematic pipeline for subsequent use from heat supply network steam-water heat exchanging initial station, this programme is with respect to drain water piping being set separately to heat supply network for subsequent use from heat supply network steam-water heat exchanging initial station, save hydrophobic pipeline, one control valve and twice isolating valve are saved, solve cleverly drain water piping long, the problem of difficult arrangement, saved investment simultaneously.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model;
Wherein, 1, heat supply network for subsequent use; 1-1, industrial steam pipeline; 1-2, condensing water conduit; 2, heat supply network steam-water heat exchanging initial station; 2-1, heating steam extraction head; 2-2, drain water piping; 2-3, an isolating valve; 2-4, oxygen-eliminating device; 3, vapour system for subsequent use; 3-1, steam converter valve; 3-2, an electronic isolating valve; 3-3, No. two electronic isolating valves; 4, draining system for subsequent use; 4-1, check-valves; 4-2, No. two isolating valves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further details.
A kind of breakdown accident of heat-supply network standby steam source system, as shown in Figure 1, comprises heat supply network 1 for subsequent use, heat supply network steam-water heat exchanging initial station 2, vapour system for subsequent use 3, draining system for subsequent use 4.
Annexation between the each equipment of breakdown accident of heat-supply network standby steam source system is: vapour system 3 for subsequent use connects the industrial steam pipeline 1-1 of heat supply network 1 for subsequent use and the heating steam extraction head 2-1 of heat supply network steam-water heat exchanging initial station 2 by pipeline, steam converter valve 3-1 is set on the pipeline of vapour system 3 for subsequent use, and steam converter valve 3-1 both sides arrange respectively an electronic isolating valve 3-2 and No. two electronic isolating valve 3-3; Draining system 4 for subsequent use connects the condensing water conduit 1-2 of heat supply network 1 for subsequent use and the drain water piping 2-2 of heat supply network steam-water heat exchanging initial station 2 by pipeline, on the pipeline of draining system 4 for subsequent use, near condensing water conduit 1-2, check-valves 4-1 is set, isolating valve 4-2 is also set No. two on the pipeline on draining system 4 for subsequent use, and drain water piping 2-2 is upper arranges isolating valve 2-3 No. one near oxygen-eliminating device 2-4 side.
The utility model is taking steam power plant's extension project as embodiment, wherein heat supply network 1 for subsequent use is old brand-name computer group, heat supply network steam-water heat exchanging initial station 2 is extension project Unit Steam Water first heat exchange station, specific works process is as follows: the heating steam extraction head 2-1 that the industrial steam of old brand-name computer group is introduced to extension project Unit Steam Water first heat exchange station by vapour system 3 for subsequent use is upper, controls the temperature and pressure of the steam that is transported to steam-water heat exchanging initial station by steam converter valve 3-1; By draining system 4 for subsequent use, the condensate water of extension project Unit Steam Water first heat exchange station is drawn to the condensing water conduit 1-2 that is back to old brand-name computer group, maintain the vapour-water balance of old brand-name computer group, by the adjustable hydrophobic amount of control valve of extension project Unit Steam Water first heat exchange station, signal is still taken from extension project Unit Steam Water first heat exchange station heater condensate liquid level.
Claims (2)
1. breakdown accident of heat-supply network standby steam source system, it is characterized in that: comprise vapour system for subsequent use (3) and draining system for subsequent use (4), described vapour system for subsequent use (3) connects the industrial steam pipeline (1-1) of heat supply network for subsequent use (1) and the heating steam extraction head (2-1) of heat supply network steam-water heat exchanging initial station (2) by pipeline respectively, steam converter valve (3-1) is set on the pipeline of described vapour system for subsequent use (3), and described steam converter valve (3-1) both sides arrange respectively an electronic isolating valve (3-2) and No. two electronic isolating valves (3-3); Described draining system for subsequent use (4) connects the heat supply network steam-water heat exchanging initial station drain water piping (2-2) of (2) and the condensing water conduit (1-2) of heat supply network for subsequent use (1) by pipeline, check-valves (4-1) and No. two isolating valves (4-2) are set on the pipeline of described draining system for subsequent use (4), and described check-valves (4-1) arranges near condensing water conduit (1-2).
2. breakdown accident of heat-supply network standby steam source system according to claim 1, is characterized in that: described drain water piping (2-2) is upper arranges an isolating valve (2-3) near oxygen-eliminating device (2-4) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044981.5U CN203687140U (en) | 2014-01-24 | 2014-01-24 | Heat supplying network accident standby steam source system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044981.5U CN203687140U (en) | 2014-01-24 | 2014-01-24 | Heat supplying network accident standby steam source system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687140U true CN203687140U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044981.5U Expired - Lifetime CN203687140U (en) | 2014-01-24 | 2014-01-24 | Heat supplying network accident standby steam source system |
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| Country | Link |
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| CN (1) | CN203687140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110569986A (en) * | 2018-05-16 | 2019-12-13 | 中蔷（上海）电子系统工程有限公司 | Heat supply underground pipeline real-time management system and method based on Internet of things |
| CN113882919A (en) * | 2021-08-17 | 2022-01-04 | 大唐七台河发电有限责任公司 | Heat supply system of cogeneration unit and heat preservation and supply disposal method |
-
2014
- 2014-01-24 CN CN201420044981.5U patent/CN203687140U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110569986A (en) * | 2018-05-16 | 2019-12-13 | 中蔷（上海）电子系统工程有限公司 | Heat supply underground pipeline real-time management system and method based on Internet of things |
| CN113882919A (en) * | 2021-08-17 | 2022-01-04 | 大唐七台河发电有限责任公司 | Heat supply system of cogeneration unit and heat preservation and supply disposal method |
| CN113882919B (en) * | 2021-08-17 | 2023-09-22 | 大唐七台河发电有限责任公司 | Heat supply system of cogeneration unit and heat-preserving treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee after: POWERCHINA HEBEI ELECTRIC POWER ENGINEERING Co.,Ltd. Address before: 050031 No. 6 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: HEBEI ELECTRIC POWER DESIGN & Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |