CN206670446U - A kind of online water rinse-system of air preheater - Google Patents
A kind of online water rinse-system of air preheater Download PDFInfo
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- CN206670446U CN206670446U CN201720366408.XU CN201720366408U CN206670446U CN 206670446 U CN206670446 U CN 206670446U CN 201720366408 U CN201720366408 U CN 201720366408U CN 206670446 U CN206670446 U CN 206670446U
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- pipe
- air preheater
- rinse
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Abstract
The utility model discloses a kind of online water rinse-system of air preheater, including water system and rinse-system；The water system is using the circle irrigation system between precision processing regeneration；The rinse-system includes rinsing main pipe, and described one end for rinsing main pipe is divided at least two and rinses son pipe, and the flushing main pipe connects the water system, respectively rinses the soot blower entrance that sub- pipe connects each air preheater respectively, and the flushing main pipe is provided with high-pressure hydraulic pump.The utility model has the advantage of：Realize while unit safety operation is not influenceed by online high pressure water washing air preheater, reduce the pressure difference of air preheater fume side, improve the situation of boiler furnace negative pressure fluctuation, developing result is good, reduce the electric current of primary air fan, air-introduced machine and pressure fan, it is energy-saving, improve the reliability of equipment.
Description
Technical field
It the utility model is related to a kind of air preheater rinse-system, more particularly to a kind of online water rinse-system of air preheater.
Background technology
Raised with the sulphur content of part fired power generating unit as-fired coal, before the acid dew-point temperature ratio of air preheater cold-end air significantly
Rise；Simultaneously NO is exported for control denitrationxDischarge, nitrogen oxides of keeping under strict control is exceeded, and ammonia spraying amount is significantly increased；Further, since spray
Ammonia flow field is uneven, causes partial denitrification outlet the escaping of ammonia exceeded, the generation of air preheater cold end is easily bonded under comprehensive function
Ash content and the ammonium hydrogen sulfate being not easily cleaned, there is situations such as rise of fume side pressure difference, exhaust gas temperature rise, furnace pressure fluctuation,
Serious threat unit operation.The scheme that domestic power plant's processing air preheater blocks at present mainly has four kinds：Unilateral exclusion of water is rinsed, stopped
Machine water is rinsed, chemical water is rinsed, low pressure and mass flow water rinses；First two water, which rinses, needs offline blowing out or stoppage in transit blower fan, serious shadow
Ring unit load；Chemical water flushing needle is preferable to the treatment effect of substantial amounts of metal mineralization, ammonium hydrogen sulfate deposition, but quantities
It is larger；Low pressure and mass flow water is rinsed mainly for simple stifled ash, but general to blocking serious air preheater developing result.
Utility model content
Technical problem to be solved in the utility model is by online high pressure while unit safety operation is not influenceed
Water rinses the online water rinse-system of air preheater of air preheater.
The utility model is that solve above-mentioned technical problem by the following technical programs：A kind of online water of air preheater rinses system
System, including water system and rinse-system；The water system is using the circle irrigation system between precision processing regeneration；The flushing
System includes flushing main pipe, and described one end for rinsing main pipe is divided at least two and rinses son pipe, described to rinse described in main pipe connection
Water system, respectively rinses the soot blower entrance that sub- pipe connects each air preheater respectively, and the flushing main pipe is provided with high-pressure hydraulic pump.Profit
The double medium soot blowers installed with air preheater cold end are realized while not influenceing unit safety operation, pass through online high pressure water flushing
Wash to reduce the pressure difference of air preheater fume side, realize good developing result.
As the technical scheme of optimization, the water system includes water inlet main pipe and main water outlet pipe, the water inlet main pipe
One end is divided into two water inlet son pipes, and two sub- pipes of water inlet are all connected with one end of the main water outlet pipe；On two sub- pipes of water inlet respectively
Provided with flush water pump；Recirculation pipe is connected between two sub- pipes of water inlet, the recirculation pipe connects a flushing water wherein
Between the entrance side of the outlet side of pump and another flush water pump；The middle part rinsed main pipe and be connected to the recirculation pipe.
The recirculation pipe of circle irrigation system between being regenerated using precision processing is that rinse-system is supplied water.
As the technical scheme of optimization, the main water outlet pipe is provided with main water outlet pipe main valve.For controlling precision processing to regenerate
Between circle irrigation system rinse water outlet switch.
As the technical scheme of optimization, the exit of two flush water pumps is equipped with flush water pump outlet valve, described to follow again
One end of endless tube wherein one flush water pump outlet side of connection is connected to the outlet side of its flush water pump outlet valve.For controlling two
Platform flush water pump enabling and closing.
As the technical scheme of optimization, the recirculation pipe is provided with recycling pipe valve, and the flushing main pipe is connected to institute
State the outlet side of recycling pipe valve.Whether the water outlet for controlling two flush water pumps, which enters in recirculation pipe, is circulated.
As the technical scheme of optimization, the flushing main pipe, which is provided with, rinses main valve, and the flushing main valve is located at the height
The entrance side of water pump.For controlling rinse-system is overall to enable and close.
As the technical scheme of optimization, the outlet side for rinsing flushing main valve in main pipe is provided with high-pressure hydraulic pump inlet valve,
The high-pressure hydraulic pump inlet valve is located at the entrance side of the high-pressure hydraulic pump.For controlling enabling and closing for high-pressure hydraulic pump.
As the technical scheme of optimization, respectively rinse on sub- pipe and be respectively equipped with air preheater inlet valve.For control and adjust into
Enter the flushing water of each air preheater.
As the technical scheme of optimization, set valve uses hand-operated valve on pipeline.It is simple in construction, it is convenient to set.
As the technical scheme of optimization, the power supply of the high-pressure hydraulic pump uses the power supply of steam generator system.Rationally utilize power
Source, it is convenient to set.
The utility model has the advantage of：Realize while unit safety operation is not influenceed by online high pressure water flushing
Air preheater to be washed, reduces the pressure difference of air preheater fume side, improves the situation of boiler furnace negative pressure fluctuation, developing result is good,
The electric current of primary air fan, air-introduced machine and pressure fan is reduced, it is energy-saving, improve the reliability of equipment.
Brief description of the drawings
Fig. 1 is the structural representation of the online water rinse-system of the utility model air preheater.
Embodiment
As shown in figure 1, a kind of online water rinse-system of air preheater, including water system 1 and rinse-system 2.
Water system 1 using precision processing regeneration between circle irrigation system, including water inlet main pipe 11, main water outlet pipe 12, enter
Water pipe 13, flush water pump 14, recirculation pipe 15, main water outlet pipe main valve 16, flush water pump outlet valve 17 and recycling pipe valve 18.
One end of water inlet main pipe 11 is divided into two sub- pipes 13 of water inlet, and two sub- pipes 13 of water inlet are all connected with the one of main water outlet pipe 12
End, main water outlet pipe 12 are provided with main water outlet pipe main valve 16；Flush water pump 14, two flushings are respectively equipped with two sub- pipes 13 of water inlet
The exit of water pump 14 is equipped with flush water pump outlet valve 17；Recirculation pipe 15 is connected between two sub- pipes 13 of water inlet, then is followed
Endless tube 15 connect the outlet valve 17 of a flush water pump 14 wherein outlet side and another flush water pump 14 entrance side it
Between, recirculation pipe 15 is provided with recycling pipe valve 18.
Rinse-system 2 includes rinsing main pipe 21, rinses sub- pipe 22, high-pressure hydraulic pump 23, rinses main valve 24, high-pressure hydraulic pump entrance
Valve 25 and air preheater inlet valve 26.
The one end for rinsing main pipe 21 is connected to the outlet side that pipe valve 18 is recycled on recirculation pipe 15, rinses in main pipe 21 and sets
Have and rinse main valve 24, the outlet side for rinsing main valve 24 is provided with high-pressure hydraulic pump inlet valve 25, the outlet side of high-pressure hydraulic pump inlet valve 25
Provided with high-pressure hydraulic pump 23, the power supply of high-pressure hydraulic pump 23 uses the power supply of steam generator system；The other end for rinsing main pipe 21 is divided into two
Sub- pipe 22 is rinsed, respectively rinses the soot blower entrance that sub- pipe 22 connects each air preheater respectively, respectively rinses on sub- pipe 22 and is respectively equipped with sky
Pre- device inlet valve 26.
Main water outlet pipe main valve 16, flush water pump outlet valve 17, recycling pipe valve 18, flushing main valve 24, high-pressure hydraulic pump entrance
Valve 25 and air preheater inlet valve 26 use hand-operated valve.
Confirmation pump group gateway is flexible coupling before rinsing, and pipeline is firmly unobstructed, and the test run of high-pressure hydraulic pump 23 is normal, rinse-system 2
It is qualified that pipeline has rinsed, each pipeline conducting.The pressure of flushing water is gradually stepped up in flushing process, is boosted to stable during 10MPa
10 minutes, prevent a large amount of flushing waters from entering air preheater, cause local contract on cooling, cause impact and rub, pay attention in flushing process
Monitor air and flue system parameter：Air preheater running current, fume side pressure difference, furnace pressure, send, be air-introduced machine, primary air fan electric current, dynamic
Leaf aperture, alarm etc., check that each parameter is further continued for boosting to 20Mpa and be rinsed after without exception.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
All any modification, equivalent and improvement made within new spirit and principle etc., should be included in guarantor of the present utility model
Within the scope of shield.
Claims (10)
- A kind of 1. online water rinse-system of air preheater, it is characterised in that：Including water system (1) and rinse-system (2)；The confession Water system (1) is using the circle irrigation system between precision processing regeneration；The rinse-system (2) includes rinsing main pipe (21), described The one end for rinsing main pipe (21) is divided at least two flushing son pipes (22), and the flushing main pipe (21) connects the water system (1), each soot blower entrance for rinsing son pipe (22) and connecting each air preheater respectively, the flushing main pipe (21) are provided with high-pressure hydraulic pump (23)。
- 2. the online water rinse-system of air preheater as claimed in claim 1, it is characterised in that：The water system (1) include into Jellyfish pipe (11) and main water outlet pipe (12), one end of the water inlet main pipe (11) are divided into two water inlet son pipes (13), two water inlets Son pipe (13) is all connected with one end of the main water outlet pipe (12)；Flush water pump (14) is respectively equipped with two water inlet son pipes (13)； Recirculation pipe (15) is connected between two water inlet son pipes (13), the recirculation pipe (15) connects a flush water pump wherein (14) between outlet side and the entrance side of another flush water pump (14)；The flushing main pipe (21) is connected to the recycling Manage the middle part of (15).
- 3. the online water rinse-system of air preheater as claimed in claim 2, it is characterised in that：The main water outlet pipe (12) is provided with Main water outlet pipe main valve (16).
- 4. the online water rinse-system of air preheater as claimed in claim 2, it is characterised in that：The outlet of two flush water pumps (14) Place is equipped with flush water pump outlet valve (17), and the recirculation pipe (15) connects the one of wherein one flush water pump (14) outlet side End is connected to the outlet side of its flush water pump outlet valve (17).
- 5. the online water rinse-system of air preheater as claimed in claim 2, it is characterised in that：The recirculation pipe (15) is provided with Recycle pipe valve (18), the outlet side for rinsing main pipe (21) and being connected to the recycling pipe valve (18).
- 6. the online water rinse-system of air preheater as claimed in claim 1, it is characterised in that：The flushing main pipe (21) is provided with Rinse main valve (24), the entrance side for rinsing main valve (24) and being located at the high-pressure hydraulic pump (23).
- 7. the online water rinse-system of air preheater as claimed in claim 6, it is characterised in that：Rinsed on the flushing main pipe (21) The outlet side of main valve (24) is provided with high-pressure hydraulic pump inlet valve (25), and the high-pressure hydraulic pump inlet valve (25) is located at the high-pressure hydraulic pump (23) entrance side.
- 8. the online water rinse-system of air preheater as claimed in claim 1, it is characterised in that：Each rinse on son pipe (22) sets respectively There is air preheater inlet valve (26).
- 9. the online water rinse-system of air preheater as described in claim any one of 3-8, it is characterised in that：Set by pipeline Valve uses hand-operated valve.
- 10. the online water rinse-system of air preheater as claimed in claim 1, it is characterised in that：The electricity of the high-pressure hydraulic pump (23) Source uses the power supply of steam generator system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366408.XU CN206670446U (en) | 2017-04-10 | 2017-04-10 | A kind of online water rinse-system of air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720366408.XU CN206670446U (en) | 2017-04-10 | 2017-04-10 | A kind of online water rinse-system of air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206670446U true CN206670446U (en) | 2017-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720366408.XU Expired - Fee Related CN206670446U (en) | 2017-04-10 | 2017-04-10 | A kind of online water rinse-system of air preheater |
Country Status (1)
| Country | Link |
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| CN (1) | CN206670446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373340A (en) * | 2018-10-23 | 2019-02-22 | 大唐滨州发电有限公司 | The online high pressure water flushing washing method of full bag-type dust formula coal-burning boiler rotary regenerative air heater |
-
2017
- 2017-04-10 CN CN201720366408.XU patent/CN206670446U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373340A (en) * | 2018-10-23 | 2019-02-22 | 大唐滨州发电有限公司 | The online high pressure water flushing washing method of full bag-type dust formula coal-burning boiler rotary regenerative air heater |
| CN109373340B (en) * | 2018-10-23 | 2020-01-03 | 大唐滨州发电有限公司 | Online high-pressure water washing method for rotary air preheater of full-cloth-bag dust removal type coal-fired boiler |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180410 |
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| CF01 | Termination of patent right due to non-payment of annual fee |