CN109883259A - A kind of super critical boiler high temperature scale cleaning system - Google Patents
A kind of super critical boiler high temperature scale cleaning system Download PDFInfo
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- CN109883259A CN109883259A CN201910242936.8A CN201910242936A CN109883259A CN 109883259 A CN109883259 A CN 109883259A CN 201910242936 A CN201910242936 A CN 201910242936A CN 109883259 A CN109883259 A CN 109883259A
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Abstract
A kind of super critical boiler high temperature scale cleaning system, by increasing flushing pipe I, flushing pipe II in the left and right sides of boiler body, demineralized water is filled in flushing pipe I, flushing pipe II and boiler body, bidirectional circulating cleaning is carried out to boiler oxidation skin using demineralized water, oxide skin carrying is come out of the stove outside by demineralized water is rinsed, thoroughly the oxide skin to fall off inside high temperature superheater, high temperature reheater can be cleaned out, high-temperature surface pipe explosion accident caused by the blocking that can effectively avoid falling off because of oxide skin；Cleaning high-temperature heating surface oxidized skin does not need to carry out checking oxide skin accumulation situation using detecting instrument, is not required to pipe cutting；It is the system run all right, reliable, rinse-system is attached during shutdown of boiler with boiler, it is separated after flushing with boiler, without any connection component, to boiler, other positions are pollution-free, and boiler oxidation micromicro is collected by rinse-system formula strainer free of demolition, or is all discharged out of the furnace by drainage.
Description
Technical field
The present invention relates to a kind of oxide skins to clear up system, and specifically a kind of super critical boiler high temperature scale clears up system,
Belong to super critical boiler equipment technical field.
Background technique
The generation of super critical boiler high-temperature surface steam oxidation skin is inevitable, with prolonging for the boiler operatiopn time limit
Long, oxide skin, which falls off, leads to the frequent booster of high-temperature surface, which has caused the great attention of various countries.
Super critical boiler occurs oxide skin and falls off, it will generates following problems:
(1) flow passage component in heating surface tubes in boilers is caused to block, to make Boiler Metallic heating surface that local mistake occur
Heat and booster；
(2) oxide skin to fall off, which enters steam turbine, can damage Turbine Flow Path, influence the efficiency of steam turbine；
(3) if the oxide skin to fall off is deposited between steam turbine main inlet throttle-stop valve spool and valve seat, it will cause steamer owner's vapour
Badge is puckery；
(4) oxide skin to fall off can block main steam and reheating steam system drain pipe；
(5) oxide skin, which falls off, also will affect the Steam-water Quality of unit.
To solve the above problem caused by high temperature scale falls off, existing descaling technology is mainly:
(1) using during unit outage, high-temperature surface elbow oxide skin is checked by detector, according to inspection
Situation is looked into, pipe cutting cleaning is carried out.
(2) using in unit running process, side other by height, low or air-out tube door is opened, increases steam flow, according to
Oxide skin is carried by steam, and high-temperature surface is discharged.
The technology of existing descaling has the disadvantage in that
(1) it checks that oxide skin accumulates situation using detector instrument, needs pipe cutting to clear up, high temperature superheater and high temperature reheater
For stainless steel or high-alloy steel material, unsuitable Rewelding, scale blowing project amount is larger, costly, and a large amount of high temperature
There are certain security risks after heating surface welds again.
(2) effect is general in such a way that high other, low side or air-out tube increase steam flow, can only carry small amounts
Skin, and high other and low other steam discharge does not discharge out of the furnace oxide skin, may enter steam turbine or condensate system, set to other
It is standby to cause security risk, increase steam flow suddenly and is also easy to produce pipe vibration.
Summary of the invention
The object of the present invention is to provide a kind of super critical boiler high temperature scales to clear up system, using demineralized water to boiler height
Warm superheater and high temperature reheater oxide skin carry out bidirectional circulating cleaning, are not required to pipe cutting, are not required to check oxide skin accumulation feelings by root
Condition；System run all right, reliable, rinse-system is attached during shutdown of boiler with boiler, after flushing with boiler point
From no any connection component, to boiler, other positions are pollution-free, and boiler oxidation micromicro passes through rinse-system formula strainer free of demolition
It collects, or is all discharged out of the furnace by drainage.
To achieve the goals above, the present invention provides a kind of super critical boiler high temperature scale cleaning system, including boiler
Ontology, the boiler body include high temperature reheater desuperheat penstock, water supply system, and high temperature reheater desuperheat penstock successively leads to
Piping connects low-temperature reheater, low-temperature reheater outlet header, and the side of low-temperature reheater outlet header passes sequentially through pipeline
One end of boiler high temperature reheater I, boiler high temperature reheater outlet gambling valve I is connected, the another of valve I is gambled in the outlet of boiler high temperature reheater
One end connects steam turbine, and the other side of low-temperature reheater outlet header passes sequentially through pipeline connection boiler high temperature reheater II, pot
The other end of one end of furnace high temperature reheater outlet gambling valve II, boiler high temperature reheater outlet gambling valve II connects steam turbine；Water supply
System passes sequentially through pipeline connection economizer, low temperature superheater, level-one medium temperature overheater, level-one medium temperature overheater outlet header,
The side of level-one medium temperature overheater outlet header is sequentially connected boiler second level medium temperature overheater I, High-temperature Superheater In A Boiler I, boiler
The other end of one end of high temperature superheater outlet gambling valve I, High-temperature Superheater In A Boiler outlet gambling valve I connects steam turbine, level-one medium temperature
The other side of super-heater exit case pass sequentially through pipeline connection boiler second level medium temperature overheater II, High-temperature Superheater In A Boiler II,
The other end of one end of High-temperature Superheater In A Boiler outlet gambling valve II, High-temperature Superheater In A Boiler outlet gambling valve II connects steam turbine；?
Drain port is set in connecting pipe；The flush water pump for further including rinse-system and connecting with rinse-system, rinse-system are divided into
Flushing pipe I, flushing pipe II, draining system is by flush water pump, flush water pump imported valve, flush water pump outlet non-return valve
Door, flush water pump outlet electrically operated gate composition, flush water pump imported valve are exported inverse by pipeline connection flush water pump, flush water pump
Only valve, flush water pump export the arrival end of electrically operated gate, and the outlet end of flush water pump outlet electrically operated gate, which is respectively communicated with, is mounted on punching
The one end for the boiler rinse-system control valve I washed on pipeline I, the boiler rinse-system control valve being mounted on flushing pipe II
One end of door II, the other end of boiler rinse-system control valve I are connected to the one of rinse-system backwater valve I by pipeline respectively
End, one end of High-temperature Superheater In A Boiler imported valve I, boiler high temperature reheater imported valve I one end, High-temperature Superheater In A Boiler
The other end connection High-temperature Superheater In A Boiler outlet gambling valve I of imported valve I, the other end of boiler high temperature reheater imported valve I
Connect boiler high temperature reheater outlet gambling valve I；The other end of boiler rinse-system control valve II is separately connected rinse-system and returns
One end of penstock II, one end of boiler high temperature reheater imported valve II, High-temperature Superheater In A Boiler imported valve II one end,
Boiler high temperature reheater imported valve II the other end connection boiler high temperature reheater outlet gambling valve II, High-temperature Superheater In A Boiler into
The other end connection High-temperature Superheater In A Boiler outlet gambling valve II of mouth valve II；The other end of rinse-system backwater valve I rinses system
The other end of system backwater valve II is connect with oxide skin collection device, sewage door.
As a further improvement of the present invention, further include a set of spare flush water pump, connect with rinse-system.
As a further improvement of the present invention, flushing pipe I, flushing pipe II are changeable uses.
As a further improvement of the present invention, the pressure at water supply system is higher than at level-one medium temperature overheater outlet header
Pressure 0.5-0.6MPa, the pressure at high temperature reheater desuperheat penstock are greater than the pressure at low-temperature reheater outlet header
0.2MPa。
As a further improvement of the present invention, pipeline uses stainless steel, zinc-plated, carbon steel material.
As a further improvement of the present invention, 40 mesh stainless steel filtering nets are installed in oxide skin collection device.
As a further improvement of the present invention, flowmeter is installed on flush water pump outlet conduit.
As a further improvement of the present invention, rinse-system backwater valve II, rinse-system backwater valve I, boiler rinse
System control valve door I, boiler rinse-system control valve II, boiler high temperature reheater imported valve I, boiler high temperature reheater into
Mouth valve II, High-temperature Superheater In A Boiler imported valve II, High-temperature Superheater In A Boiler imported valve I are all made of gate valve.
Compared with prior art, the present invention is by increasing flushing pipe I, flushing pipe in the left and right sides of boiler body
II, and flushing pipe I, flushing pipe II can switch use, fill in flushing pipe I, flushing pipe II and boiler body
Demineralized water carries out bidirectional circulating cleaning to High-temperature Superheater In A Boiler and high temperature reheater oxide skin using demineralized water, by flushing
Demineralized water oxide skin carrying is come out of the stove it is outer, can thoroughly will be in high temperature superheater, high temperature reheater and second level medium temperature overheater
The oxide skin that portion falls off is cleaned out, and high-temperature surface pipe explosion accident caused by falling off because of oxide skin can be effectively avoided；Cleaning
High-temperature heating surface oxidized skin does not need to carry out checking oxide skin accumulation situation using detecting instrument, is not required to pipe cutting, reduces workload,
Avoid high-temperature surface because of pipe cutting after, system restore when problems of welded quality cause boiler tube bursting is non-to stop accident；System operation
Stablize, is reliable, rinse-system is attached during shutdown of boiler with boiler, is separated after flushing with boiler, without any company
Relay part, to boiler, other positions are pollution-free, and boiler oxidation micromicro is collected by rinse-system formula strainer free of demolition, or is passed through
Drainage all discharges out of the furnace.
Detailed description of the invention
Fig. 1 is the working principle of the invention schematic diagram.
In figure: 1, flush water pump, 2, flush water pump imported valve, 3, flush water pump outlet non-return valve, 4, flush water pump
Export electrically operated gate, 5, hydrophobic pump intake transverse tube isolating door, 6, sewage door, 7, oxide skin collection device, 8, hydrophobic development unit, 9, punching
Wash system return valve II, 10, rinse-system backwater valve I, 11, boiler rinse-system control valve I, 12, boiler flushing system
System control valve II, 13, boiler high temperature reheater imported valve II, 14, boiler high temperature reheater outlet gambling valve II, 15, boiler
High temperature reheater II, 16, high temperature reheater desuperheat penstock, 17, low-temperature reheater, 18, low-temperature reheater outlet header, 19,
Boiler high temperature reheater I, 20, boiler high temperature reheater outlet gambling valve I, 21, boiler high temperature reheater imported valve I, 22, water supply
System, 23, economizer, 24, low temperature superheater, 25, level-one medium temperature overheater, 26, High-temperature Superheater In A Boiler imported valve II,
27, High-temperature Superheater In A Boiler outlet gambling valve II, 28, High-temperature Superheater In A Boiler II, 29, boiler second level medium temperature overheater II, 30, one
Grade medium temperature overheater outlet header, 31, boiler second level medium temperature overheater I, 32, High-temperature Superheater In A Boiler I, 33, boiler high temperature mistake
Hot device outlet gambling valve I, 34, High-temperature Superheater In A Boiler imported valve I, 36, flushing pipe I, 37, flushing pipe II.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings, (the right and left in left and right directions and Fig. 1 in being described below
To identical, it is intended merely to the description present invention).
As shown in Figure 1, a kind of super critical boiler high temperature scale clears up system, including boiler body, the boiler body
Including high temperature reheater desuperheat penstock 16, water supply system 22, high temperature reheater desuperheat penstock 16 passes sequentially through pipeline connection
Low-temperature reheater 17, low-temperature reheater outlet header 18, the side of low-temperature reheater outlet header 18 pass sequentially through pipeline connection
One end of boiler high temperature reheater I 19, boiler high temperature reheater outlet gambling valve I 20, boiler high temperature reheater outlet gambling valve I 20
The other end connects steam turbine, and the other side of low-temperature reheater outlet header 18 passes sequentially through pipeline connection boiler high temperature reheater II
15, the other end of one end of boiler high temperature reheater outlet gambling valve II 14, boiler high temperature reheater outlet gambling valve II 14 connects vapour
Turbine；Water supply system 22 pass sequentially through pipeline connection economizer 23, low temperature superheater 24, level-one medium temperature overheater 25, in level-one
Warm super-heater exit case 30, the side of level-one medium temperature overheater outlet header 30 are sequentially connected boiler second level medium temperature overheater I
31, one end of High-temperature Superheater In A Boiler I 32, High-temperature Superheater In A Boiler outlet gambling valve I 33, High-temperature Superheater In A Boiler outlet gambling valve I
33 other end connects steam turbine, and the other side of level-one medium temperature overheater outlet header 30 passes sequentially through pipeline connection boiler second level
One end of medium temperature overheater II 29, High-temperature Superheater In A Boiler II 28, High-temperature Superheater In A Boiler outlet gambling valve II 27, boiler high temperature mistake
The other end of hot device outlet gambling valve II 27 connects steam turbine；Drain port 35 is set in connecting pipe；
Further include rinse-system and the flush water pump being connect with rinse-system 1, rinse-system be divided into flushing pipe I 36,
Flushing pipe II 37, flush water pump imported valve 2 are connected to flush water pump 1, flush water pump outlet non-return valve 3, punching by pipeline
The arrival end of wash water pump discharge electrically operated gate 4, the outlet end of flush water pump outlet electrically operated gate 4, which is respectively communicated with, is mounted on flushing pipe I
One end of boiler rinse-system control valve I 11 on 36, the boiler rinse-system control valve being mounted on flushing pipe II 37
One end of door II 12, the other end of boiler rinse-system control valve I 11 are connected to rinse-system backwater valve I by pipeline respectively
10 one end, one end of High-temperature Superheater In A Boiler imported valve I 34, boiler high temperature reheater imported valve I 21 one end, boiler
The other end connection High-temperature Superheater In A Boiler outlet gambling valve I 33 of high temperature superheater imported valve I 34, boiler high temperature reheater import
The other end connection boiler high temperature reheater outlet gambling valve I 20 of valve I 21；The other end of boiler rinse-system control valve II 12
It is separately connected one end of rinse-system backwater valve II 9, one end of boiler high temperature reheater imported valve II 13, boiler high temperature mistake
The other end connection boiler high temperature reheater of one end of hot device imported valve II 26, boiler high temperature reheater imported valve II 13 goes out
Mouth gambling valve II 14, the other end connection High-temperature Superheater In A Boiler outlet gambling valve II 27 of High-temperature Superheater In A Boiler imported valve II 26；
The other end of rinse-system backwater valve I 10, rinse-system backwater valve II 9 the other end with oxide skin collection device 7, row
Dirty door 6 connects.
The invention also includes a set of spare flush water pumps 1, connect with rinse-system, when former flush water pump insufficient water
Or during the work time when something goes wrong, spare flush water pump can be preferentially selected, it is easy to use, save replacing construction.
The present invention is all connected with flushing pipe, i.e. flushing pipe I 36, flushing pipe II 37 at left and right sides of boiler body,
Flushing pipe I 36, flushing pipe II 37 are changeable to be used, and can carry out circulation flushing to high temperature superheater, high temperature reheater.
Due to stainless steel, zinc-plated, carbon steel material be all it is etch-proof, the weak corrosion such as air, steam, water can be prevented to be situated between
Matter, therefore pipeline of the invention uses stainless steel, zinc-plated, carbon steel material, improves the protective performance of pipeline.
It is durable since stainless steel filter screen corrosion resistance is good, have it is acidproof, it is alkaline-resisting, it is wear-resisting, high temperature oxidation resisting, strong
Degree is high, and pulling force, toughness and wearability are strong, the performances such as durable, and the present invention selects 40 mesh of installation in oxide skin collection device 7
Stainless steel filter screen improves the safety in utilization of oxide skin collection device, prolongs the service life.
For the ease of metered flush water flow, present invention selection installs flowmeter on flush water pump outlet conduit.
Hydrophobic pump intake transverse tube isolating door 5 plays, and rinse-system return water is isolated with flash vessel, and rinse-system is made to form one
A closed system.
In order to realize that bidirectional circulating cleans, by rinse-system backwater valve II 9 of the invention, rinse-system backwater valve I
10, boiler rinse-system control valve I 11, boiler rinse-system control valve II 12, boiler high temperature reheater imported valve I
21, boiler high temperature reheater imported valve II 13, High-temperature Superheater In A Boiler imported valve II 26, High-temperature Superheater In A Boiler inlet valve
Door I 34 is all made of gate valve.
The course of work:
High temperature superheater scale inside is cleared up, is filled in boiler body, rinse-system and draining system first
Demineralized water keeps the pressure at water supply system 22 to be slightly above pressure 0.5-0.6MPa at level-one medium temperature overheater outlet header 30,
Start flush water pump 1, opens flush water pump imported valve 3 and flush water pump exports electrically operated gate 4, in the process, flush water pump
Imported valve 2 is always maintained at full-gear, opens boiler rinse-system control valve I 11, High-temperature Superheater In A Boiler imported valve I
34, High-temperature Superheater In A Boiler imported valve II 26, rinse-system backwater valve II 9 close rinse-system backwater valve I 10, pot
Furnace rinse-system control valve II 12, boiler high temperature reheater imported valve II 13, boiler high temperature reheater imported valve I 21,
High temperature superheater is carried out on the left of boiler to the high temperature scale cleaning on the right side of boiler, at this time punching in the high temperature superheater of boiler left side
It removes salt water to flow from above to below, carries pipeline scale inside by demineralized water is rinsed, collected through oxide skin collection device 7,
Or it is discharged out of the furnace by sewage door 6；During flushing, partial oxidation skin can also be drained by high temperature superheater draining system thin
Water flash vessel 8 drains into outside furnace through hydrophobic development unit 8.It is checked according to the front and back pressure difference of oxide skin collection device 7 and its sewage door 6
The effect that high temperature superheater rinses on the left of boiler can operate rinse-system if non-scale discharge or pressure difference are unchanged, carry out pot
Furnace from right side to boiler on the left of cleaning, process is as follows: filling remove in boiler body, rinse-system and draining system first
Salt water keeps the pressure at water supply system 22 to be slightly above pressure 0.5-0.6MPa at level-one medium temperature overheater outlet header 30, opens
Dynamic flush water pump 1, opens flush water pump imported valve 3 and flush water pump exports electrically operated gate 4, in the process, flush water pump into
Mouth valve 2 is always maintained at full-gear, opens boiler rinse-system control valve II 12, High-temperature Superheater In A Boiler imported valve II
26, High-temperature Superheater In A Boiler imported valve I 34, rinse-system backwater valve I 10 close rinse-system backwater valve II 9, boiler
Rinse-system control valve I 11, boiler high temperature reheater imported valve II 13, boiler high temperature reheater imported valve I 21 carry out
High temperature superheater, to the high temperature scale cleaning on the left of boiler, rinses in high temperature superheater on the right side of boiler remove at this time on the right side of boiler
Salt water flows from bottom to top, carries pipeline scale inside by demineralized water is rinsed, collects through oxide skin collection device 7, or logical
Sewage door 6 is crossed to discharge out of the furnace；During flushing, partial oxidation skin can be drained into dewatering capacity-enlarging by high temperature superheater draining system
Device 8 drains into outside furnace through hydrophobic development unit 8.
High temperature reheater scale inside is cleared up, is filled in boiler body, rinse-system and draining system first
Demineralized water keeps pressure at high temperature reheater desuperheat penstock 16 to be higher than pressure 0.2MPa at low-temperature reheater outlet header 18,
Start flush water pump 1, opens flush water pump imported valve 3 and flush water pump exports electrically operated gate 4, in the process, flush water pump
Imported valve 2 is always maintained at full-gear, opens boiler rinse-system control valve I 11, boiler high temperature reheater imported valve I
21, boiler high temperature reheater imported valve II 13, rinse-system backwater valve II 9 close rinse-system backwater valve I 10, pot
Furnace rinse-system control valve II 12, High-temperature Superheater In A Boiler imported valve I 34, High-temperature Superheater In A Boiler imported valve II 26,
High temperature reheater is carried out on the left of boiler to the high temperature scale cleaning on the right side of boiler, at this time punching in the high temperature superheater of boiler left side
It removes salt water to flow from above to below, carries pipeline scale inside by demineralized water is rinsed, collected through oxide skin collection device 7,
Or it is discharged out of the furnace by sewage door 6；During flushing, partial oxidation skin can be drained into thin by high temperature superheater draining system
Water flash vessel 8 drains into outside furnace through hydrophobic development unit 8.Pot is checked according to the front and back pressure difference of oxide skin collection device 7 and sewage door 6
The effect that high temperature reheater rinses on the left of furnace can operate rinse-system if non-scale discharge or pressure difference are unchanged, carry out boiler
Cleaning on the left of from from right side to boiler, process are as follows: filling desalination in boiler body, rinse-system and draining system first
Water keeps pressure at high temperature reheater desuperheat penstock 16 to be higher than pressure 0.2MPa at low-temperature reheater outlet header 18, starting
Flush water pump 1, opens flush water pump imported valve 3 and flush water pump exports electrically operated gate 4, in the process, flush water pump import
Valve 2 is always maintained at full-gear, opens boiler rinse-system control valve II 12, boiler high temperature reheater imported valve II
13, boiler high temperature reheater imported valve I 21, rinse-system backwater valve I 10 close rinse-system backwater valve II 9, boiler
Rinse-system control valve I 11, High-temperature Superheater In A Boiler imported valve I 34, High-temperature Superheater In A Boiler imported valve II 26 carry out
High temperature reheater, to the high temperature scale cleaning on the left of boiler, rinses salt on the right side of boiler at this time in high temperature reheater on the right side of boiler
Water flows from bottom to top, carries pipeline scale inside by demineralized water is rinsed, collects through oxide skin collection device 7, or pass through
Sewage door 6 discharges out of the furnace；During flushing, partial oxidation skin can be drained into hydrophobic development unit by high temperature superheater draining system
8, it is drained into outside furnace through hydrophobic development unit 8.
Claims (8)
1. a kind of super critical boiler high temperature scale clears up system, including boiler body, the boiler body include high temperature reheating
Device desuperheat penstock (16), water supply system (22), high temperature reheater desuperheat penstock (16) pass sequentially through pipeline connection low temperature again
Hot device (17), low-temperature reheater outlet header (18), the side of low-temperature reheater outlet header (18) pass sequentially through pipeline connection
Boiler high temperature reheater I (19), the outlet of boiler high temperature reheater gamble one end of valve I (20), boiler high temperature reheater outlet gambling valve I
(20) the other end connects steam turbine, and the other side of low-temperature reheater outlet header (18) passes sequentially through pipeline connection boiler high temperature
Reheater II (15), the outlet of boiler high temperature reheater gamble one end of valve II (14), boiler high temperature reheater outlet gambling valve II (14)
The other end connect steam turbine；Water supply system (22) passes sequentially through pipeline connection economizer (23), low temperature superheater (24), level-one
Medium temperature overheater (25), level-one medium temperature overheater outlet header (30), the side of level-one medium temperature overheater outlet header (30) according to
Secondary connection boiler second level medium temperature overheater I (31), High-temperature Superheater In A Boiler I (32), High-temperature Superheater In A Boiler outlet gambling valve I (33)
One end, High-temperature Superheater In A Boiler outlet gambling valve I (33) the other end connect steam turbine, level-one medium temperature overheater outlet header
(30) the other side passes sequentially through pipeline connection boiler second level medium temperature overheater II (29), High-temperature Superheater In A Boiler II (28), pot
The other end of one end of furnace high temperature superheater outlet gambling valve II (27), High-temperature Superheater In A Boiler outlet gambling valve II (27) connects steamer
Machine；Drain port (35) are set in connecting pipe；
It is characterized in that, further including that rinse-system and the flush water pump connecting with rinse-system (1), rinse-system are divided into flushing
Pipeline I (36), flushing pipe II (37), flush water pump imported valve (2) are connected to flush water pump (1), flush water pump by pipeline
Outlet non-return valve (3), flush water pump export the arrival end of electrically operated gate (4), and flush water pump exports the outlet end point of electrically operated gate (4)
The one end for the boiler rinse-system control valve I (11) that Lian Tong be mounted on flushing pipe I (36) is mounted on flushing pipe II
(37) one end of the boiler rinse-system control valve II (12) on, the other end point of boiler rinse-system control valve I (11)
Not by pipeline connection one end of rinse-system backwater valve I (10), High-temperature Superheater In A Boiler imported valve I (34) one end,
The other end of one end of boiler high temperature reheater imported valve I (21), High-temperature Superheater In A Boiler imported valve I (34) connects boiler
The other end of high temperature superheater outlet gambling valve I (33), boiler high temperature reheater imported valve I (21) connects boiler high temperature reheater
Outlet gambling valve I (20)；The other end of boiler rinse-system control valve II (12) is separately connected rinse-system backwater valve II (9)
One end, one end of boiler high temperature reheater imported valve II (13), High-temperature Superheater In A Boiler imported valve II (26) one end,
Other end connection boiler high temperature reheater outlet gambling valve II (14) of boiler high temperature reheater imported valve II (13), boiler high temperature
Other end connection High-temperature Superheater In A Boiler outlet gambling valve II (27) of superheater imported valve II (26)；Rinse-system backwater valve
The other end of I (10), the other end of rinse-system backwater valve II (9) connect with oxide skin collection device (7), sewage door (6)
It connects；Pressure at water supply system (22) is higher than the pressure at level-one medium temperature overheater outlet header (30), high temperature reheater desuperheat
Pressure at penstock (16) is greater than the pressure at low-temperature reheater outlet header (18).
2. a kind of super critical boiler high temperature scale according to claim 1 clears up system, which is characterized in that further include one
Spare flush water pump (1) is covered, is connect with rinse-system.
3. a kind of super critical boiler high temperature scale according to claim 1 or 2 clears up system, which is characterized in that rinse
Pipeline I (36), flushing pipe II (37) are changeable to be used.
4. a kind of super critical boiler high temperature scale according to claim 1 or 2 clears up system, which is characterized in that water supply
Pressure at system (22) is higher than the pressure 0.5-0.6MPa at level-one medium temperature overheater outlet header (30), and high temperature reheater subtracts
Pressure at warm water valve (16) is greater than the pressure 0.2MPa at low-temperature reheater outlet header (18).
5. a kind of super critical boiler high temperature scale according to claim 4 clears up system, which is characterized in that pipeline uses
Stainless steel, zinc-plated, carbon steel material.
6. a kind of super critical boiler high temperature scale according to claim 5 clears up system, which is characterized in that oxide skin is received
40 mesh stainless steel filtering nets are installed in acquisition means (7).
7. a kind of super critical boiler high temperature scale according to claim 6 clears up system, which is characterized in that in flushing water
Flowmeter is installed on pump discharge pipeline.
8. a kind of super critical boiler high temperature scale according to claim 7 clears up system, which is characterized in that rinse-system
Backwater valve II (9), rinse-system backwater valve I (10), boiler rinse-system control valve I (11), boiler rinse-system control
Valve II (12) processed, boiler high temperature reheater imported valve I (21), boiler high temperature reheater imported valve II (13), boiler are high
Warm superheater imported valve II (26), High-temperature Superheater In A Boiler imported valve I (34) are all made of gate valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242936.8A CN109883259A (en) | 2019-03-28 | 2019-03-28 | A kind of super critical boiler high temperature scale cleaning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910242936.8A CN109883259A (en) | 2019-03-28 | 2019-03-28 | A kind of super critical boiler high temperature scale cleaning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109883259A true CN109883259A (en) | 2019-06-14 |
Family
ID=66934895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910242936.8A Withdrawn CN109883259A (en) | 2019-03-28 | 2019-03-28 | A kind of super critical boiler high temperature scale cleaning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109883259A (en) |
-
2019
- 2019-03-28 CN CN201910242936.8A patent/CN109883259A/en not_active Withdrawn
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Inventor after: Xu Xin Inventor after: Zheng Hong Inventor after: Zhang Quansheng Inventor after: Zhang Guohua Inventor after: Li Peng Inventor after: Zhou Qunjie Inventor after: Li Wenbao Inventor after: Zhou Dong Inventor after: Yu Ruihong Inventor before: Zheng Hong Inventor before: Xu Xin Inventor before: Zhang Guohua Inventor before: Li Peng Inventor before: Zhang Quansheng Inventor before: Zhou Qunjie Inventor before: Li Wenbao Inventor before: Zhou Dong Inventor before: Yu Ruihong |
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Application publication date: 20190614 |