CN208154438U - A kind of waste heat boiler water supply great circulation system - Google Patents
A kind of waste heat boiler water supply great circulation system Download PDFInfo
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- CN208154438U CN208154438U CN201820481464.2U CN201820481464U CN208154438U CN 208154438 U CN208154438 U CN 208154438U CN 201820481464 U CN201820481464 U CN 201820481464U CN 208154438 U CN208154438 U CN 208154438U
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Abstract
The utility model discloses a kind of waste heat boiler water supply great circulation systems, including rising pipeline, decline pipeline and waste heat boiler (12), the waste heat boiler water supply great circulation system further includes the feed pump (3) set gradually from low to high, oxygen-eliminating device (2), heat exchanger and waste heat boiler drum (1), the heat exchanger is set in the flue (13) of waste heat boiler, the entrance of the decline pipeline can be connected to the hydrospace of waste heat boiler drum (1), and the outlet of the decline pipeline can be connected to the entrance of the heat exchanger.In the case that the waste heat boiler water supply great circulation system set can be in short-term blowing out or in short term without heat exchange source, using the drum of waste heat boiler and the difference in height of oxygen-eliminating device, water flow static in the heat exchanger of waste heat boiler is moved up, achieved the purpose that antifreeze.
Description
Technical field
The utility model relates to the boiler circuit field of boiler, a kind of particularly waste heat boiler water supply great circulation system.
Background technique
In iron and steel enterprise, as electric furnace discontinuous smelting process in, high-temperature flue gas interruption generates, and the waste heat of flue gas recycles
System should both meet smelt heat production flue gas when operating condition, also to meet the operating condition for not generating hot fume when not smelting in addition some
Smelting furnace is more influenced by order, when and the when of production and blowing out, such as electric furnace, APD furnace.
Waste heat boiler usually has two kinds of endless form of carbonated drink Natural Circulation and forced circulation, and the two compares, forced circulation system
The advantages of system is the influence that not will receive the variation of thermic load operating condition, and operation is more reliable, and the operating condition variation of adaptation is more, the disadvantage is that
Circulating pump is run always, and power consumption is high, causes operating cost higher.Natural Circulation generates carbonated drink because its circulation absorbs heat by recirculated water
Mixture, so that the difference in specific gravity of tedge and down-comer is as circulation power, circulating pump provides ground power when replacing forced circulation,
Therefore Natural Circulation has preferable economy.
The antifreeze of short-term blowing out, which is asked, will especially be considered in northern frore area for interruption smelting furnace flue gas waste heat recovery
Topic.The waste heat boiler of Natural Circulation, in short-term blowing out or in the case that heat rate of heating surface disappears in the longer non-blowing process,
How the antifreeze problem in severe cold winter just seems especially prominent.
Utility model content
In order to solve the problems, such as the antifreeze of waste heat boiler, the utility model provides a kind of waste heat boiler water supply systemic circulation system
System, in the case which can be in short-term blowing out or in short term without heat exchange source, utilizes waste heat pot
The drum of furnace and the difference in height of oxygen-eliminating device, move up water flow static in the heat exchanger of waste heat boiler, achieve the purpose that antifreeze.
Technical solution adopted by the utility model to solve its technical problems is：A kind of waste heat boiler water supply systemic circulation system
System, including rise pipeline, decline pipeline and waste heat boiler, the waste heat boiler water supply great circulation system further include from low to high according to
Feed pump, oxygen-eliminating device, heat exchanger and the waste heat boiler drum of secondary setting, the heat exchanger are set in the flue of waste heat boiler, should
The entrance of decline pipeline can be connected to the hydrospace of waste heat boiler drum, and the outlet of the decline pipeline can be with the heat exchanger
Entrance connection, the outlet of the heat exchanger can be connected to the entrance of the rising pipeline, and the outlet of the rising pipeline can be with waste heat
The air space of boiler drum is connected to, and the water tank of oxygen-eliminating device can be connected to by supply liaison tube with the entrance of the rising pipeline, is removed
The water tank of oxygen device can be connected to by deaerated water supply line with the hydrospace of waste heat boiler drum, and feed pump is set to deaerated water
On supply line.
The flue of waste heat boiler contains vertical flue section, which contains multiple branch's heat exchangers, the multiple branch
It being arranged in parallel between heat exchanger, the multiple branch's heat exchanger is set in the vertical flue section of the flue of the waste heat boiler,
The multiple branch's heat exchanger can absorb the fume afterheat in the vertical flue section, and the multiple branch's heat exchanger is from the top down
It is arranged successively.
The decline pipeline contain with the multiple branch's heat exchanger a plurality of decline branch line correspondingly, described in every
Decline branch line entrance be connected to the hydrospace of waste heat boiler drum, it is described decline branch line outlet and described point
The entrance of branch heat exchanger connects one to one.
The rising pipeline contain with the multiple branch's heat exchanger a plurality of ascending branch pipeline correspondingly, described in every
The outlet of ascending branch pipeline is connect with the hydrospace of waste heat boiler drum, and the entrance of the ascending branch pipeline passes through connection
The outlet of by-pass line and branch's heat exchanger connects one to one.
The supply liaison tube contain a supply Trunk Line and with the ascending branch pipeline a plurality of confession correspondingly
It is connected to the water tank of by-pass line, the outlet and oxygen-eliminating device that supply Trunk Line, one end of the supply by-pass line and the ascending branch
The entrance of pipeline connects one to one, and the other end of the supply by-pass line is connect with supply Trunk Line.
The first entrance of every ascending branch pipeline passes through the outlet one of connecting branch line and branch's heat exchanger
One is correspondingly connected with, and one end of the supply by-pass line and the second entrance of the ascending branch pipeline connect one to one, this first
Entrance and second entrance are respectively positioned on the lower part of the ascending branch pipeline, which is located at the top of the second entrance.
Deaerated water supply line be equipped with feed-regulating valve, feed-regulating valve be set to waste heat boiler drum water inlet and
Between feed pump, cutting-off valve is equipped on every ascending branch pipeline.
The entrance of each branch's heat exchanger is respectively positioned on the side-lower of branch's heat exchanger, each branch's heat exchanger
Outlet be respectively positioned on the upper side of branch's heat exchanger.
The utility model has the beneficial effects that：
1, in waste heat boiler load carrying, system is Natural Circulation, and system is simple, and with low investment, system is without circulating pump
Power consumption is run, operating cost is low.
2, system does not have to the circulatory systems such as setting circulating pump, and system simplifies, once invests low；
3, in freeze-up, when the short-term removal of load of system, the difference in height of feed pump, drum and oxygen-eliminating device can be made full use of, it is real
Existing water circulation, system is safe and reliable, achievees the purpose that antifreeze.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Fig. 1 is the general structure schematic diagram of waste heat boiler water supply great circulation system described in the utility model.
1, waste heat boiler drum；2, oxygen-eliminating device；3, feed pump；4, branch's heat exchanger；5, branch's heat exchanger；6, decline branch
Pipeline；7, decline branch line；8, ascending branch pipeline；9, ascending branch pipeline；10, feed-regulating valve；11, water supply pump discharge
Pipeline；12, waste heat boiler；13, the flue of waste heat boiler；14, cutting-off valve；15, cutting-off valve；16, by-pass line is supplied；17,
Supply by-pass line；18, deaerated water supply line；19, connecting branch line；20, Trunk Line is supplied.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of waste heat boiler water supply great circulation system, including rise pipeline, decline pipeline and waste heat boiler 12, the waste heat
Boiler feedwater great circulation system further includes the feed pump 3 set gradually from low to high, oxygen-eliminating device 2, heat exchanger and waste heat boiler vapour
Packet 1, which is set in the flue 13 of waste heat boiler, and the entrance of the decline pipeline can be with the water of waste heat boiler drum 1
Space connection, the outlet of the decline pipeline can be connected to the entrance of the heat exchanger, and the outlet of the heat exchanger can be with the rising
The entrance of pipeline is connected to, and the outlet of the rising pipeline can be connected to the hydrospace of waste heat boiler drum 1, the water tank of oxygen-eliminating device 2
It can be connected to by supply liaison tube with the entrance of the rising pipeline, the water tank of oxygen-eliminating device 2 can pass through deaerated water supply line
18 are connected to the hydrospace of waste heat boiler drum 1, and feed pump 3 is set on deaerated water supply line 18, as shown in Figure 1.
In the vertical direction, feed pump 3 is located at the lower section of oxygen-eliminating device 2, and oxygen-eliminating device 2 is located at the lower section of heat exchanger, heat exchanger
Positioned at the lower section of waste heat boiler drum 1.In the case where in short-term blowing out or in short term without heat exchange source, 1 He of waste heat boiler drum is utilized
The difference in height of oxygen-eliminating device 2 is not necessarily to water circulating pump, just makes using only low power feed pump 3 static in the heat exchanger of waste heat boiler
Water flow move up, have reached antifreeze purpose.
In the present embodiment, the flue 13 of waste heat boiler contains vertical flue section, which contains multiple branch's heat exchange
Device is arranged in parallel between the multiple branch's heat exchanger, and the multiple branch's heat exchanger is set to the flue of the waste heat boiler
In 13 vertical flue section, the multiple branch's heat exchanger is sequentially arranged at intervals from the top down.Water in waste heat boiler drum 1 is logical
It crosses decline pipeline and flows through branch's heat exchanger, exchange heat in branch's heat exchanger, absorb fume afterheat, generate steam water interface through rising
Pipeline enters the air space of waste heat boiler drum 1, forms Natural Circulation.
The heat exchanger contains multiple branch's heat exchangers, and two points of wherein the top and bottom are only delineated in Fig. 1
Branch heat exchanger, Liang Ge branch heat exchanger are respectively branch's heat exchanger 4 and branch's heat exchanger 5, in the vertical direction, all branches
Heat exchanger is respectively positioned between oxygen-eliminating device 2 and waste heat boiler drum 1.
In the present embodiment, which contains and the multiple branch's heat exchanger a plurality of decline branch correspondingly
The entrance of pipeline, every decline branch line is connected to the hydrospace of waste heat boiler drum 1, the decline branch line
Outlet and the entrance of branch's heat exchanger connect one to one.
Specifically, the quantity of branch's heat exchanger is identical as the decline quantity of branch line, it is only delineated in Fig. 1
In two decline branch lines, this two decline branch lines are respectively to decline branch line 6 and decline branch line 7, decline
The entrance of branch line 6 is connected to the hydrospace of waste heat boiler drum 1, decline branch line 7 entrance also with waste heat boiler vapour
The hydrospace connection of packet 1, the outlet of decline branch line 6 and the entrance of branch heat exchanger 5 are correspondingly connected with, decline branch line 7
Outlet and the entrance of branch heat exchanger 4 be correspondingly connected with.
In the present embodiment, which contains and the multiple branch's heat exchanger a plurality of ascending branch correspondingly
The outlet of pipeline, every ascending branch pipeline is connect with the hydrospace of waste heat boiler drum 1, the ascending branch pipeline
Entrance connected one to one by connecting branch line 19 and the outlet of branch's heat exchanger.
Specifically, the quantity of branch's heat exchanger is identical as the quantity of ascending branch pipeline, it is only delineated in Fig. 1
In two ascending branch pipelines, which is respectively ascending branch pipeline 8 and ascending branch pipeline 9, is risen
The outlet of branch line 8 is connect with the hydrospace of waste heat boiler drum 1, the outlet of ascending branch pipeline 9 also with waste heat boiler vapour
The hydrospace connection of packet 1, the entrance of ascending branch pipeline 8 pass through the company corresponding with the outlet of branch heat exchanger 5 of connecting branch line 19
It connects, 9 entrance of ascending branch pipeline is exported by connecting branch line 19 and branch heat exchanger 4 and is correspondingly connected with, connecting branch line 19
Quantity is identical as the quantity of branch's heat exchanger, and connecting branch line 19 connects one to one with branch's heat exchanger.
In the present embodiment, the supply liaison tube also contain a supply Trunk Line 20 and with the ascending branch pipeline
One-to-one a plurality of supply by-pass line, the quantity of the supply by-pass line is identical as the quantity of connecting branch line 19, the supply branch
Pipeline and connecting branch line 19 correspond, and the outlet of supply Trunk Line 20 is connect with the water tank of oxygen-eliminating device 2, the supply by-pass line
One end and the entrance of the ascending branch pipeline connect one to one, the other end and supply Trunk Line 20 of the supply by-pass line
Connection.
Specifically, the supply by-pass line and connecting branch line 19 correspond, two of them supply is only delineated in Fig. 1
By-pass line, this two supply by-pass lines are respectively to supply by-pass line 16 and supply by-pass line 17, one end of the supply by-pass line 16
It is connect with the entrance of ascending branch pipeline 9, the other end of the supply by-pass line 16 is connect with supply Trunk Line 20.The supply branch pipe
One end of line 17 is connect with the entrance of ascending branch pipeline 8, and the other end of the supply by-pass line 17 is connect with supply Trunk Line 20.
In the present embodiment, every ascending branch pipeline contains two entrances, and described two entrances are respectively
One entrance and second entrance, the two entrances are respectively positioned on the lower part of every ascending branch pipeline, every ascending branch
The first entrance of pipeline passes through connecting branch line 19 and the outlet of branch's heat exchanger connects one to one, the supply branch pipe
One end of line and the second entrance of the ascending branch pipeline connect one to one, and the first entrance and second entrance are respectively positioned on this
The lower part of ascending branch pipeline, the first entrance are located at the top of the second entrance.
Specifically, as shown in Figure 1, the outlet of branch's heat exchanger 4 passes through a connecting branch line 19 and ascending branch pipeline 9
First entrance connection, one end of the supply by-pass line 16 connect with the second entrance of ascending branch pipeline 9, branch's heat exchanger 5
Outlet connect by another connecting branch line 19 with the first entrance of ascending branch pipeline 8, the one of the supply by-pass line 17
End is connect with the second entrance of ascending branch pipeline 8.
In the present embodiment, deaerated water supply line 18 is equipped with feed-regulating valve 10, and feed-regulating valve 10 is set to remaining
Between the hydrospace and feed pump 3 of heat boiler drum 1, deaerated water supply line 18 be located at waste heat boiler drum 1 hydrospace and
Part between feed pump 3 is properly termed as feed pump export pipeline 11, is equipped with stop valve on every ascending branch pipeline
Door such as supplies by-pass line 16 and is equipped with cutting-off valve 15, and supply by-pass line 17 is equipped with cutting-off valve 14.
In the present embodiment, the entrance of each branch's heat exchanger is respectively positioned on the side-lower of branch's heat exchanger, each
The outlet of branch's heat exchanger is respectively positioned on the upper side of branch's heat exchanger, as shown in Figure 1.The water of waste heat boiler drum 1 is empty
Between and water inlet be respectively positioned on the lower end of waste heat boiler drum 1, waste heat boiler drum 1 contains and decline branch line 6 corresponds
Multiple discharge outlet of connection, the hydrospace of waste heat boiler drum 1 is located at the top of waste heat boiler drum 1.Each branch branch follows
Ring or simultaneously circulation are determining according to quantity of circulating water and feed pump flow rate calculation.Each connection branch individually alternately puts into operation, so that
Feed pump meets the needs of flow as circulation power.
In the present invention, which contains multiple branch's heat exchangers, and the multiple branch's heat exchanger is from the top down
It is arranged successively, which contains a plurality of decline branch line to connect one to one with the multiple branch's heat exchanger, should
Rise pipeline and contains a plurality of ascending branch pipeline to connect one to one with the multiple branch's heat exchanger, the supply liaison tube
Contain a plurality of supply by-pass line to connect one to one with the ascending branch pipeline.One decline branch line, one
Branch's heat exchanger, an ascending branch pipeline and a supply by-pass line are in turn connected to form one and antifreeze follow
Ring branch, the waste heat boiler water supply great circulation system contain a plurality of antifreeze circulation branch road being arranged successively from the top down.
Specifically, sequentially connected decline branch line 6, branch's heat exchanger 5, ascending branch pipeline 8, supply by-pass line 17
The 1st article of antifreeze circulation branch road is formed, the 1st article of antifreeze circulation branch road is connected between waste heat boiler drum 1 and oxygen-eliminating device 2, supply
By-pass line 17 is equipped with cutting-off valve 14.Sequentially connected decline branch line 7, ascending branch pipeline 9, supplies branch's heat exchanger 4
The N articles antifreeze circulation branch road is formed to by-pass line 16, every antifreeze circulation branch road is connected to waste heat boiler drum 1 and oxygen-eliminating device 2
Between, supply by-pass line 16 is equipped with cutting-off valve 15.When the short-term blowing out of waste heat boiler, can be separately turned on the 1st article it is antifreeze
The cutting-off valve 14 of circulation branch road so that the recirculated water of the 1st article of antifreeze circulation branch road from waste heat boiler drum 1, decline branched pipe
Line 6, branch's heat exchanger 5, ascending branch pipeline 8, supply by-pass line 17, into oxygen-eliminating device 2, then via 3 feed pipe of feed pump
Waste heat boiler drum 1 is returned, systemic circulation is formed.1st article of antifreeze circulation branch road to the N articles antifreeze circulation branch road can sequentially
In opening state or closed state, cutting-off valve 14 and the opening and closing of cutting-off valve 15 sequentially, substep are recycled, and every section
The module and tedge of Natural Circulation, the water circulation of down-comer are got up, and are formed water supply great circulation system, are achieved the purpose that antifreeze.
In the present invention, by difference in height water in the heat exchanger of Natural Circulation HRSG is recycled.Benefit
With feed pump, the water of oxygen-eliminating device is pressed and delivered in drum, the water of drum flows into oxygen-eliminating device by the branch of circulation, it is not necessary to single
Solely setting circulating pump and the preceding dirt separator of pump, simplify system, while saving operating cost.Water supply systemic circulation can make waste heat boiler exist
It is effectively short-term antifreeze in the case where without extraneous heating source.
A kind of antifreeze method of waste heat boiler water supply great circulation system, the waste heat boiler water supply systemic circulation system is described below
The antifreeze method of system uses above-mentioned waste heat boiler water supply great circulation system, and the waste heat boiler water supply great circulation system is prevented
Jelly method includes the following steps：
Step 1, when thering is hot fume to flow through in the flue 13 of waste heat boiler, be in close state the supply liaison tube
(cutting-off valve on i.e. every supply by-pass line is turned off, and cutting-off valve 14 and cutting-off valve 15 are turned off), waste heat boiler vapour
The water of 1 discharge of packet is entered in the heat exchanger by the decline pipeline, and the water in the heat exchanger is by inhaling thermogenetic steam-water mixing
Object enters waste heat boiler drum 1 by the rising pipeline, and the water in oxygen-eliminating device 2 can be delivered to waste heat boiler vapour by feed pump 3
In packet 1；Specifically, the cutting-off valve on every supply by-pass line is turned off, the water in branch's heat exchanger 4 and branch's heat exchanger 5
By heat absorption, generates steam water interface and entered waste heat boiler vapour by ascending branch pipeline 9 and ascending branch pipeline 8 accordingly
Packet 1, through steam-water separation, the steam isolated is sent outside drum, and undersaturation water enters decline branch after mixing with the furnace water in drum
Pipeline 6 and decline branch line 7.Form the Natural Circulation of a waste heat recycling carbonated drink.In feed pump in thermic load operating condition, remove
The water of oxygen device 2 is sent via the pressurization of feed pump, feed pump export pipeline 11, feed-regulating valve 10 to waste heat boiler drum 1, to being
System carries out moisturizing.
When flowing through in the flue 13 of waste heat boiler without hot fume, the supply liaison tube is made to be in opening state, it is remaining
The water that heat boiler drum 1 is discharged successively enters oxygen-eliminating device by the decline pipeline, heat exchanger, rising pipeline and supply liaison tube
2, the water in oxygen-eliminating device 2 can be delivered in waste heat boiler drum 1 by feed pump 3.Specifically, not having when in waste heat boiler flue
When hot fume flows through, then antifreeze circulation pattern is opened, opens the cutting-off valve on every supply by-pass line, i.e., described in every
Antifreeze circulation branch road is completely in opening state, such as opens cutting-off valve 14 and cutting-off valve 15, the water in waste heat boiler drum 1
Successively the 1st article of antifreeze circulation is formed via decline branch line 6, branch's heat exchanger 5, ascending branch pipeline 8, supply by-pass line 17
Branch enters in oxygen-eliminating device 2, the water in waste heat boiler drum 1 also successively via decline branch line 7, branch's heat exchanger 4, on
Liter branch line 9, supply by-pass line 16 form the N articles antifreeze circulation branch road and enter in oxygen-eliminating device 2, and the water of oxygen-eliminating device 2 is through giving
Water pump 3 is transmitted back to waste heat boiler drum 1, forms waste heat boiler drum 1, the pot water in oxygen-eliminating device 2, water supply systemic circulation.
It, can also be with one in a plurality of antifreeze circulation branch road when being flowed through in the flue 13 of waste heat boiler without hot fume
The part antifreeze circulation branch road sequentially be in opening state or closed state.For example, can be using a part of described anti-
Freeze circulation branch road and be in opening state according to order from the top down, or using a part of antifreeze circulation branch road according under
Upward order is in opening state, or is in using a part of antifreeze circulation branch road according to from center to the order at both ends
Opening state, or opening state is according to from both ends to the order in center using a part of antifreeze circulation branch road.
Assuming that the waste heat boiler water supply great circulation system contains 8 antifreeze circulation branch roads, the 1st article of antifreeze circulation branch road to
8 antifreeze circulation branch roads are arranged successively according to order from the top down, and a part of antifreeze circulation branch road is sequentially
Specific implementation in opening state or closed state is as follows：
A part of antifreeze circulation branch road is in opening state according to order from the top down：It is a part of described antifreeze to follow
Ring branch is an antifreeze circulation branch road；1st article of antifreeze circulation branch road opens a period of time, then the 1st article of antifreeze circulation
Branch is closed；2nd article of antifreeze circulation branch road opens a period of time, and then the 2nd article of antifreeze circulation branch road is closed；3rd article antifreeze to follow
Ring branch opens a period of time, and then the 3rd article of antifreeze circulation branch road is closed；4th article of antifreeze circulation branch road opens a period of time, so
The 4th article of antifreeze circulation branch road is closed afterwards；5th article of antifreeze circulation branch road opens a period of time, and then the 5th article of antifreeze circulation branch road is closed
It closes；6th article of antifreeze circulation branch road opens a period of time, and then the 6th article of antifreeze circulation branch road is closed；7th article of antifreeze circulation branch road
A period of time is opened, then the 7th article of antifreeze circulation branch road is closed；8th article of antifreeze circulation branch road is opened a period of time, and then the 8th
The antifreeze circulation branch road of item is closed.A part of antifreeze circulation branch road therein can be one or more, when one therein
When antifreeze circulation branch road being divided to be in opening state, remaining antifreeze circulation branch road is in closed state.
A part of antifreeze circulation branch road is in opening state according to order from bottom to top：It is a part of described antifreeze to follow
Ring branch is an antifreeze circulation branch road；8th article of antifreeze circulation branch road opens a period of time, then the 8th article of antifreeze circulation
Branch is closed；7th article of antifreeze circulation branch road opens a period of time, and then the 7th article of antifreeze circulation branch road is closed；6th article antifreeze to follow
Ring branch opens a period of time, and then the 6th article of antifreeze circulation branch road is closed；5th article of antifreeze circulation branch road opens a period of time, so
The 5th article of antifreeze circulation branch road is closed afterwards；4th article of antifreeze circulation branch road opens a period of time, and then the 4th article of antifreeze circulation branch road is closed
It closes；3rd article of antifreeze circulation branch road opens a period of time, and then the 3rd article of antifreeze circulation branch road is closed；2nd article of antifreeze circulation branch road
A period of time is opened, then the 2nd article of antifreeze circulation branch road is closed；1st article of antifreeze circulation branch road is opened a period of time, and then the 1st
The antifreeze circulation branch road of item is closed.A part of antifreeze circulation branch road therein can be one or more, when one therein
When antifreeze circulation branch road being divided to be in opening state, remaining antifreeze circulation branch road is in closed state.
A part of antifreeze circulation branch road is in opening state according to the order from center to both ends：It is a part of described anti-
Jelly circulation branch road is two antifreeze circulation branch roads；4th article of antifreeze circulation branch road and the 5th article of antifreeze circulation branch road are open-minded simultaneously
For a period of time, then the 4th article of antifreeze circulation branch road and the 5th article of antifreeze circulation branch road simultaneously close off；3rd article of antifreeze circulation branch road and
6th article of antifreeze circulation branch road opens a period of time simultaneously, and then the 3rd article of antifreeze circulation branch road and the 6th article of antifreeze circulation branch road are same
When close；2nd article of antifreeze circulation branch road and the 7th article of antifreeze circulation branch road open a period of time simultaneously, then the 2nd article of antifreeze circulation
Branch and the 7th article of antifreeze circulation branch road simultaneously close off；1st article of antifreeze circulation branch road and the 8th article of antifreeze circulation branch road are open-minded simultaneously
For a period of time, then the 1st article of antifreeze circulation branch road and the 8th article of antifreeze circulation branch road simultaneously close off；It is therein a part of described anti-
Freezing circulation branch road may be three or more, and when a part of antifreeze circulation branch road therein is in opening state, remaining is anti-
Freeze circulation branch road and is in closed state.
A part of antifreeze circulation branch road is in opening state according to from both ends to the order in center：It is a part of described anti-
Jelly circulation branch road is two antifreeze circulation branch roads；1st article of antifreeze circulation branch road and the 8th article of antifreeze circulation branch road are open-minded simultaneously
For a period of time, then the 1st article of antifreeze circulation branch road and the 8th article of antifreeze circulation branch road simultaneously close off；2nd article of antifreeze circulation branch road and
7th article of antifreeze circulation branch road opens a period of time simultaneously, and then the 2nd article of antifreeze circulation branch road and the 7th article of antifreeze circulation branch road are same
When close；3rd article of antifreeze circulation branch road and the 6th article of antifreeze circulation branch road open a period of time simultaneously, then the 3rd article of antifreeze circulation
Branch and the 6th article of antifreeze circulation branch road simultaneously close off；4th article of antifreeze circulation branch road and the 5th article of antifreeze circulation branch road are open-minded simultaneously
For a period of time, then the 4th article of antifreeze circulation branch road and the 5th article of antifreeze circulation branch road simultaneously close off；It is therein a part of described anti-
Freezing circulation branch road may be three or more, and when a part of antifreeze circulation branch road therein is in opening state, remaining is anti-
Freeze circulation branch road and is in closed state.Specifically, can be according to recirculated water lowest stream in the flow of feed pump, branch's heat exchanger
Dynamic velocity analysis determines while the number of the antifreeze circulation branch road of operation.
In the present invention, using the difference in height between drum and oxygen-eliminating device, recirculated water by down-comer, heat exchanger,
Communicating pipe flows into oxygen-eliminating device, recycles pump that the water in oxygen-eliminating device is delivered to drum, the method for forming water circulation.In each heat exchange
The tedge of module rises setting connection branch at header.Recirculated water is delivered to drum using the feed pump of VS .NET Prerequisites,
Instead of circulating pump.In waste heat boiler load carrying, connection branch is closed, and Natural Circulation is opened, and feed pump conveying water is to be
The moisturizing of system.Water supply systemic circulation be in waste heat boiler removal of load in order to system it is antifreeze when just enable.
The above, only specific embodiment of the utility model cannot limit the range that utility model is implemented, institute with it
With the displacement of its equivalent assemblies, or according to equivalent variations made by the utility model patent protection scope and modification, should all still fall within
The scope that this patent is covered.In addition, between technical characteristic and technical characteristic in the utility model, technical characteristic and technical solution
Between, between technical solution and technical solution use can be freely combined.
Claims (8)
1. a kind of waste heat boiler water supply great circulation system, which is characterized in that the waste heat boiler water supply great circulation system includes upper
Riser line, decline pipeline and waste heat boiler (12), the waste heat boiler water supply great circulation system further include successively setting from low to high
Feed pump (3), oxygen-eliminating device (2), heat exchanger and waste heat boiler drum (1), the heat exchanger set are set to the flue of waste heat boiler
(13) in, the entrance of the decline pipeline can be connected to the hydrospace of waste heat boiler drum (1), and the outlet of the decline pipeline can
It is connected to the entrance of the heat exchanger, the outlet of the heat exchanger can be connected to the entrance of the rising pipeline, which goes out
Mouth can be connected to the air space of waste heat boiler drum (1), and the water tank of oxygen-eliminating device (2) can pass through supply liaison tube and the rising
The entrance of pipeline is connected to, and the water tank of oxygen-eliminating device (2) can pass through the water of deaerated water supply line (18) and waste heat boiler drum (1)
Space connection, feed pump (3) are set on deaerated water supply line (18).
2. waste heat boiler water supply great circulation system according to claim 1, which is characterized in that the flue (13) of waste heat boiler
Containing vertical flue section, which contains multiple branch's heat exchangers, is arranged in parallel between the multiple branch's heat exchanger, described
Multiple branch's heat exchangers are set in the vertical flue section of the flue (13) of the waste heat boiler, the multiple branch's heat exchanger energy
The fume afterheat in the vertical flue section is enough absorbed, the multiple branch's heat exchanger is arranged successively from the top down.
3. waste heat boiler water supply great circulation system according to claim 2, which is characterized in that the decline pipeline contains and institute
State multiple branch's heat exchangers a plurality of decline branch line correspondingly, the entrance of every decline branch line is and waste heat
The hydrospace of boiler drum (1) is connected to, and the outlet of the decline branch line and the entrance of branch's heat exchanger correspond
Connection.
4. waste heat boiler water supply great circulation system according to claim 2, which is characterized in that the rising pipeline contains and institute
State multiple branch's heat exchangers a plurality of ascending branch pipeline correspondingly, the outlet of every ascending branch pipeline is and waste heat
The hydrospace of boiler drum (1) connects, and the entrance of the ascending branch pipeline is changed by connecting branch line (19) with the branch
The outlet of hot device connects one to one.
5. waste heat boiler water supply great circulation system according to claim 4, which is characterized in that the supply liaison tube contains
One supply Trunk Line (20) and with the ascending branch pipeline a plurality of supply by-pass line correspondingly, supply Trunk Line (20)
Outlet connect with the water tank of oxygen-eliminating device (2), the entrance one of one end of the supply by-pass line and the ascending branch pipeline is a pair of
It should connect, the other end of the supply by-pass line is connect with supply Trunk Line (20).
6. waste heat boiler water supply great circulation system according to claim 5, which is characterized in that every ascending branch pipe
The first entrance of line is connected one to one by connecting branch line (19) and the outlet of branch's heat exchanger, the supply by-pass line
One end and the second entrance of the ascending branch pipeline connect one to one, the first entrance and second entrance are respectively positioned on this
The lower part of branch line is risen, which is located at the top of the second entrance.
7. waste heat boiler water supply great circulation system according to claim 5, which is characterized in that deaerated water supply line (18)
Be equipped with feed-regulating valve (10), feed-regulating valve (10) be set to waste heat boiler drum (1) water inlet and feed pump (3) it
Between, cutting-off valve is equipped on every ascending branch pipeline.
8. waste heat boiler water supply great circulation system according to claim 2, which is characterized in that each branch's heat exchanger
Entrance be respectively positioned on the side-lower of branch's heat exchanger, the outlet of each branch's heat exchanger is respectively positioned on branch's heat exchanger
Upper side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481464.2U CN208154438U (en) | 2018-04-04 | 2018-04-04 | A kind of waste heat boiler water supply great circulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481464.2U CN208154438U (en) | 2018-04-04 | 2018-04-04 | A kind of waste heat boiler water supply great circulation system |
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| CN208154438U true CN208154438U (en) | 2018-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458331A (en) * | 2018-04-04 | 2018-08-28 | 北京京诚科林环保科技有限公司 | A kind of waste heat boiler water supply great circulation system and its antifreeze method |
-
2018
- 2018-04-04 CN CN201820481464.2U patent/CN208154438U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108458331A (en) * | 2018-04-04 | 2018-08-28 | 北京京诚科林环保科技有限公司 | A kind of waste heat boiler water supply great circulation system and its antifreeze method |
| CN108458331B (en) * | 2018-04-04 | 2023-09-08 | 北京京诚科林环保科技有限公司 | Waste heat boiler water supply large circulation system and antifreezing method thereof |
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