CN105805723A - Pipeline connecting system for boiler economizer of power station - Google Patents
Pipeline connecting system for boiler economizer of power station Download PDFInfo
- Publication number
- CN105805723A CN105805723A CN201410841321.4A CN201410841321A CN105805723A CN 105805723 A CN105805723 A CN 105805723A CN 201410841321 A CN201410841321 A CN 201410841321A CN 105805723 A CN105805723 A CN 105805723A
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- economizer
- valve
- boiler
- drum
- header
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- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention provides a pipeline connecting system for a boiler economizer of a power station. The economizer is used for heating supplied water entering a boiler and can absorb waste heat in smoke exhausted out of a body. The pipeline connecting system for the boiler economizer of the power station comprises a boiler barrel (13). The boiler barrel is connected with a recirculation pipe (1) and a bypass water supply pipe (7). A recirculation valve (2) is arranged on the recirculation pipe. One end of the recirculation pipe is connected with an economizer inlet header (3). The economizer inlet header is connected with one end of the economizer (14). The other end of the economizer is connected with an economizer outlet header (8). The economizer outlet header is connected with an economizer outlet valve (9). A safety valve (10) is arranged between the economizer outlet header and the economizer outlet valve. A safety valve (15) is arranged between the economizer inlet header and an inlet valve (4). The portion, close to the boiler barrel, of the bypass water supply pipe is provided with an economizer water valve (12) and a check valve (11). The pipeline connecting system is used for the boiler economizer of the power station.
Description
Technical field:
The present invention relates to the pipe connection system of a kind of boiler economizer in power plant.
Background technology:
Economizer enters the feedwater of boiler for heating.Owing to it is arranged on after boiler body, the waste heat in the flue gas after flowing out body can be absorbed, thus the effect saving fuel can be played.Therefore arrange that connected mode is particularly important at the pipeline of economizer.
Summary of the invention:
It is an object of the invention to provide the pipe connection system of a kind of boiler economizer in power plant.
Above-mentioned purpose is realized by following technical scheme:
A kind of pipe connection system of boiler economizer in power plant, its composition includes: drum, described drum is connected with recirculation pipe and bypass feed pipe, described recirculation pipe has recycle valve, described recirculation pipe one end is connected with economizer inlet header, described economizer inlet header is connected with economizer one end, the described economizer other end is connected with economizer exit header, described economizer exit header is connected with economizer exit valve, between described economizer exit header and economizer exit valve, there is relief valve, between described economizer inlet header and inlet valve, there is relief valve, described inlet valve is connected with check-valves, described bypass line has bypass water-supply valve, described bypass feed pipe has economizer water valve and check-valves near drum place.
The pipe connection system of described boiler economizer in power plant; when boiler runs at low load or is in the igniting liter vapour stage; it should be noted that the protection of economizer; as low at exhaust gas temperature and when economizer is countercurrent heat-transfer; by-pass flue; when igniting; when economizer is positioned at high-temperature flue gas region; water transfixion generation vaporization makes heating surface overheated; at this moment; the circulation pipe of drum and economizer bottom header is opened, and makes carry out between economizer and drum Natural Circulation, and after drum steams, pressure is that 0.1～0.2MPa little by little adds a small amount of water to economizer；Boiler drum water level is too high, can be released by water, to ensure ordinary water level.
Beneficial effect:
1. the present invention designs the pipe connection system of a kind of boiler economizer in power plant, in order to successfully the steam water interface produced in economizer is imported drum, device stop valve and check-valves before economizer.When boiler runs at low load or is in the igniting liter vapour stage, it shall be noted that the protection of economizer.If exhaust gas temperature is low and economizer is countercurrent heat-transfer, by-pass flue can be set.When igniting, if economizer is positioned at high-temperature flue gas region, because water transfixion generation vaporization makes heating surface overheated.At this moment, the circulation pipe of drum and economizer bottom header is opened, and makes carry out between economizer and drum Natural Circulation.
Present configuration is simple, easy to operate, it is possible to better makes economizer play the effect saving fuel, has saved substantial amounts of fuel cost, realized Natural Circulation by the circulation between pipeline and valve simultaneously.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the present invention.
Detailed description of the invention:
Embodiment 1:
nullA kind of pipe connection system of boiler economizer in power plant，Its composition includes: drum 13，Described drum is connected with recirculation pipe 1 and bypass feed pipe 7，Described recirculation pipe has recycle valve 2，Described recirculation pipe one end is connected with economizer inlet header 3，Described economizer inlet header is connected with economizer 14 one end，The described economizer other end is connected with economizer exit header 8，Described economizer exit header is connected with economizer exit valve 9，Between described economizer exit header and economizer exit valve, there is relief valve 10，Between described economizer inlet header and inlet valve 4, there is relief valve 15，Described inlet valve is connected with check-valves 5，Described bypass line has bypass water-supply valve 6，Described bypass feed pipe has economizer water valve 12 and check-valves 11 near drum place.
Embodiment 2:
The pipe connection system of the boiler economizer in power plant according to embodiment 1, when boiler runs at low load or is in the igniting liter vapour stage, it should be noted that the protection of economizer, as low at exhaust gas temperature and when economizer is countercurrent heat-transfer, by-pass flue, when igniting, when economizer is positioned at high-temperature flue gas region, water transfixion generation vaporization makes heating surface overheated, at this moment, the circulation pipe of drum and economizer bottom header is opened, make carry out between economizer and drum Natural Circulation, after drum steams, pressure is that 0.1～0.2MPa little by little adds a small amount of water to economizer；Boiler drum water level is too high, can be released by water, to ensure ordinary water level.
Claims (2)
1. the pipe connection system of a boiler economizer in power plant, its composition includes: drum, it is characterized in that: described drum is connected with recirculation pipe and bypass feed pipe, described recirculation pipe has recycle valve, described recirculation pipe one end is connected with economizer inlet header, described economizer inlet header is connected with economizer one end, the described economizer other end is connected with economizer exit header, described economizer exit header is connected with economizer exit valve, between described economizer exit header and economizer exit valve, there is relief valve, between described economizer inlet header and inlet valve, there is relief valve, described inlet valve is connected with check-valves, described bypass line has bypass water-supply valve, described bypass feed pipe has economizer water valve and check-valves near drum place.
2. the pipe connection system of boiler economizer in power plant according to claim 1, it is characterized in that: when boiler runs at low load or is in the igniting liter vapour stage, it should be noted that the protection of economizer, as low at exhaust gas temperature and when economizer is countercurrent heat-transfer, by-pass flue, when igniting, when economizer is positioned at high-temperature flue gas region, water transfixion generation vaporization makes heating surface overheated, at this moment, the circulation pipe of drum and economizer bottom header is opened, make carry out between economizer and drum Natural Circulation, after drum steams, pressure is that 0.1～0.2MPa little by little adds a small amount of water to economizer；Boiler drum water level is too high, can be released by water, to ensure ordinary water level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841321.4A CN105805723A (en) | 2014-12-30 | 2014-12-30 | Pipeline connecting system for boiler economizer of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841321.4A CN105805723A (en) | 2014-12-30 | 2014-12-30 | Pipeline connecting system for boiler economizer of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105805723A true CN105805723A (en) | 2016-07-27 |
Family
ID=56980165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410841321.4A Withdrawn CN105805723A (en) | 2014-12-30 | 2014-12-30 | Pipeline connecting system for boiler economizer of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105805723A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051735A (en) * | 2016-07-01 | 2016-10-26 | 无锡锡能锅炉有限公司 | Coal economizer connecting system of fuel gas boiler |
| CN106195994A (en) * | 2016-08-31 | 2016-12-07 | 无锡华光锅炉股份有限公司 | A kind of protection structure of horizontal type waste heat boiler high-pressure economizer |
| CN112013376A (en) * | 2020-09-09 | 2020-12-01 | 哈尔滨锅炉厂有限责任公司 | Coal economizer and boiler water combined cycle feed water heating system of garbage incinerator |
-
2014
- 2014-12-30 CN CN201410841321.4A patent/CN105805723A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051735A (en) * | 2016-07-01 | 2016-10-26 | 无锡锡能锅炉有限公司 | Coal economizer connecting system of fuel gas boiler |
| CN106195994A (en) * | 2016-08-31 | 2016-12-07 | 无锡华光锅炉股份有限公司 | A kind of protection structure of horizontal type waste heat boiler high-pressure economizer |
| CN112013376A (en) * | 2020-09-09 | 2020-12-01 | 哈尔滨锅炉厂有限责任公司 | Coal economizer and boiler water combined cycle feed water heating system of garbage incinerator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20160727 |