CN111747475A - Thermal rotary film type deaerator - Google Patents
Thermal rotary film type deaerator Download PDFInfo
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- CN111747475A CN111747475A CN202010651024.9A CN202010651024A CN111747475A CN 111747475 A CN111747475 A CN 111747475A CN 202010651024 A CN202010651024 A CN 202010651024A CN 111747475 A CN111747475 A CN 111747475A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 341
- 238000009826 distribution Methods 0.000 claims abstract description 79
- 239000007921 spray Substances 0.000 claims abstract description 45
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 35
- 239000001301 oxygen Substances 0.000 claims description 35
- 229910052760 oxygen Inorganic materials 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 33
- 238000006392 deoxygenation reaction Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 7
- 239000012466 permeate Substances 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 230000001154 acute effect Effects 0.000 claims 2
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 71
- 238000013461 design Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002567 autonomic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 210000004276 hyalin Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a thermodynamic rotating film type deaerator, which belongs to the technical field of boiler water supply deaerating, and comprises a first deaerating shell and a second deaerating shell, wherein the second deaerating shell is arranged on the upper part of the first deaerating shell, the first deaerating shell and the second deaerating shell are arranged in a hollow manner and communicated, a water chamber is arranged on the upper part in the second deaerating shell, water inlets are connected to the second deaerating shell on two sides of the water chamber, vertically arranged spray pipes are distributed in the water chamber, the upper and lower ports of each spray pipe are arranged on the outer side of the water chamber, water inlet holes are spirally distributed on the surfaces of the spray pipes, an exhaust assembly is connected to the upper end part of the second deaerating shell on the upper part of the water chamber, a water distribution assembly is arranged in the second deaerating shell on the lower part of; this device has realized that the water carries out degree of depth deoxidization, carries out effectual recovery moisture and falls the steam discharge to the exhaust gas, solves the exhaust and takes the water problem in order to reduce water resource loss, and the operation is stable, no vibrations, noise.
Description
Technical Field
The invention belongs to the technical field of boiler water supply deoxidization, and particularly relates to a thermal rotary film type deaerator.
Background
With the development of high-parameter and high-capacity generator sets, the system is more and more complex, the increase of the single-machine capacity leads the requirements on the economy, safety and reliability of the operation of the whole generator set to be higher, and the requirements on the quality of water supply are more and more strict. The presence of dissolved oxygen in water is a significant cause of corrosion. In order to ensure the safe and stable operation of the unit and prevent the corrosion of the boiler and the steam turbine steam-passing part equipment, the oxygen content of the feed water must be reduced. In addition, the dissolved oxygen in the condensed water also affects the operation safety of the water supply system and the whole thermodynamic system, when the condensed water with higher oxygen content passes through the regenerative low-pressure and equal-pressure equipment and the auxiliary pipelines thereof, the equipment is corroded, and the oxygen content of the condensed water must be reduced, so that more solutions are proposed in the prior art, for example:
the utility model discloses a rotary membrane type thermal deaerator in prior document 1(CN 202229167U), wherein an exhaust port is arranged at the top of a deaerating tower, a water inlet is arranged on the pipe wall at the left side of the deaerating tower, a three-stage deaerating component is arranged in the deaerating tower, wherein the one-stage deaerating component is composed of a water chamber and a steam pipe, and the water chamber is composed of a spray pipe and a vent pipe; the secondary deoxygenation component is formed by mutually arranging four layers of water grates in a cross way, and the water grates are formed by combining angle steel; the three-stage deoxygenation assembly is composed of pall ring stainless steel packing; the oxygen-eliminating tower is as an organic whole with the header tank, and the header tank is used for storing the oxygen-eliminating water, is equipped with steam port and delivery port on the header tank, and this utility model changes the fixed or spring nozzle of original spraying filler formula oxygen-eliminating device into the hydroecium of compriseing spray tube and logical steam pipe and forms, has advantages such as simple structure, convenient operation, load adaptability are good, the maintenance work load is little, has very big popularization and use value.
Prior document 2(CN 104445484B), a spin film tube type self-deaerator and a deaerating method. The deaerator is indispensable important equipment among the exhaust-heat boiler thermodynamic system, and exhaust-heat boiler carries out heat recovery's boiler equipment through the flue gas, and the deaerator is indispensable among the thermodynamic system, if set up the deaerator alone, can lose some heat in the deaerator. A rotary film tube type self-deaerator comprises the following components: go up the closing cap the upper closing cap be connected with the deoxidization barrel that inside has the spinning membrane spray tube, deoxidization barrel be connected with lower closing cap, lower closing cap and leg joint, the support be connected with the butt joint support. The invention is applied to the deoxidization of the boiler and the accessory equipment thereof.
The solution provided by the prior art can better remove oxygen in the water body, but in the deoxidization process, because the uncondensed gas is directly exhausted to the atmosphere through the exhaust pipe, in the process of removing the uncondensed gas, the exhaust noise is high, and meanwhile, a part of steam is also exhausted together, so that the waste of a part of energy is caused.
Disclosure of Invention
The invention aims to provide a thermal rotary film type deaerator which can deeply deaerate a water body, effectively recover moisture and reduce steam to be discharged from discharged gas, solve the problem of water carrying in exhaust gas so as to reduce water resource loss, and has stable operation and no vibration, noise and the like.
The technical scheme adopted by the invention for realizing the purpose is as follows: a thermodynamic rotating film deaerator comprising:
the first deoxidizing shell is horizontally arranged,
a second deoxidizing shell which is vertically arranged and arranged at the upper part of the first deoxidizing shell, the first deoxidizing shell and the second deoxidizing shell are arranged in a hollow way and are communicated,
a water chamber is arranged at the inner upper part of the second deoxidizing shell, the second deoxidizing shells at two sides of the water chamber are respectively connected with a first water supply inlet and a second water supply inlet, a vertically arranged spray pipe is arranged in the water chamber, the upper and lower ports of the spray pipe are arranged at the outer side of the water chamber, water inlet holes are spirally arranged on the surface of the spray pipe, the upper end part of the second deoxidizing shell at the upper part of the water chamber is connected with an exhaust assembly, a water distribution assembly is arranged in the second deoxidizing shell at the lower part of the water chamber, a packing layer is arranged below the water distribution assembly, and a third steam;
first deoxidization casing top and bottom are equipped with second steam inlet and first steam inlet respectively, and first deoxidization casing bottom still is equipped with the outlet, and two piece at least first liquid level pipes are connected to first deoxidization casing side, and first liquid level pipe level highly differs and first liquid level pipe is the level setting, and second liquid level pipe intercommunication through vertical setting between the first liquid level pipe, first liquid level pipe and second liquid level union coupling department are equipped with the liquid reserve tank.
According to the invention, through designing the structures and the position relations of the first deoxygenation shell and the second deoxygenation shell, water body passes through the upper part of the second deoxygenation shell and then enters the first deoxygenation shell, so that the water body subjected to deoxygenation can be thoroughly deoxygenated in a short time, and the method specifically comprises the following steps: the water body enters the water chamber of the second deoxidizing shell through the first water supply inlet, or condensed water enters the water chamber of the second deoxidizing shell through the second water supply inlet, the water body entering the water chamber enters the water chamber along water inlet holes in the side wall of the vertically arranged spray pipe, the water body rotates along the inner wall of the spray pipe after entering the spray pipe and flows downwards, the water body flowing at high speed forms a water film rotating at high speed on the inner wall of the spray pipe, when a downward water flow channel reaches a pipe orifice at the bottom of the spray pipe, the water body flows out of the spray pipe to form a water film skirt with a certain rotation angle under the action of centrifugal force, and because the first steam inlet, the second steam inlet and the third steam input pipe are arranged, the first deoxidizing shell and the second deoxidizing shell send a large amount of steam, the steam of the steam continuously moves upwards, and heat transfer matter exchange is carried out with the water film skirt and the water body in the spray pipe in the moving process, can accelerate the heat exchange of water and steam like this and realize dissolving gas and get rid of the speed and improve, later the water falls down to the water distribution subassembly by the spray tube and continues the heat absorption and contact with steam, the water through the water distribution subassembly further contacts with steam through the random packing layer of stacking again, so that further heat the water and make its inside dissolved gas discharge fast, at last the water gets into first deoxidization casing, the steam of sending into in the first deoxidization casing carries out degree of depth deoxidization in order to realize carrying out the degree of depth deoxidization to the water, reach the thorough effect of deoxidization.
Optionally, the bottom of the first deoxidizing shell is provided with a support leg, the side of the first deoxidizing shell is provided with an emergent exhaust pipe orifice, the emergent exhaust pipe orifice is controlled by an electric control valve, and the upper end of the first deoxidizing shell is provided with a standby opening. The stabilizer blade bottom surface of first deoxidization casing bottom preferably is equipped with the block rubber or establishes spring part etc. in the stabilizer blade for reduce the deoxidization ware vibrations at the during operation and improve the frictional force that removes oxygen and ground and lead to the deoxidization ware excessive displacement in order to prevent accidental collision, the urgent calandria mouth that is equipped with in first deoxidization casing side is used for the urgent emission of the inside water of first deoxidization casing under emergency, and the design of reserve mouth is used for pressure release or return water etc..
Optionally, the water distribution assembly comprises a second water distribution piece attached to the inner wall of the second deoxygenation shell, the second water distribution piece is of a circular tube structure and is communicated with the upper portion and the lower portion, a coaxial vent pipe body is arranged in the middle of the second water distribution piece, the upper end face and the lower end face of the second water distribution piece are connected with the vent pipe body through an annular water permeable connecting plate, the surface of the water permeable connecting plate is inclined to the horizontal plane, the upper end of the vent pipe body is connected with a first water distribution piece of a taper sleeve structure, a water guide partition plate is arranged on the surface of the first water distribution piece in a surrounding mode, and a water permeable through groove is formed. The water body of the spray pipe above the water distribution component falls onto the water distribution component in a water film skirt shape, firstly contacts with the surface of the first water distribution component, is separated into a plurality of areas by the water guide partition board arranged on the surface of the first water distribution component and falls through the water permeable through groove, a water film is formed in the falling process, the formed water film falls onto the surface of the water permeable connecting plate of the second water distribution component in a water drop shape through the water permeable holes on the surface of the water permeable connecting plate, falls into the water drop shape in the second water distribution component in a water drop shape, is mixed and then falls into the packing layer in a water drop shape through the water permeable connecting plate at the bottom of the second water distribution component, and simultaneously steam is input into the first water distribution component and the second water distribution component through the ventilating pipe body, the water body respectively passes through the first water distribution component and the second water distribution component in a turbulent flow state, steam input in the process of the water distribution component can form proper bubbling in the water body gathered in the second water distribution component, and the hollow cavity chamber that upper and lower water-permeable connecting plate and second water distribution piece formed of design is favorable to the gathering of steam in order to improve the heating effect to the water, and the upward circulation resistance that flows of the steam that gathers also adapts to reducing, improves steam flow conductivity.
Optionally, the water permeable through groove is arc-shaped, the first water distribution piece is arranged at the upper end of the second water distribution piece, a distance is formed between the first water distribution piece and the second water distribution piece, the distance range is 5-20cm, water permeable holes are uniformly distributed on the surface of the water permeable connecting plate, and water permeable holes are uniformly distributed on the surface of the vent pipe. The water curtain is arranged on the water distribution plate, the water curtain is arranged on the water curtain, the water curtain is arranged.
Optionally, the exhaust assembly includes a fourth exhaust pipe, the upper end of the fourth exhaust pipe is coaxially connected with a second exhaust pipe, the middle of the connection end of the fourth exhaust pipe and the second exhaust pipe is communicated through a sixth exhaust pipe, a third exhaust pipe with a diameter smaller than that of the second exhaust pipe is arranged in the second exhaust pipe, and the top of the third exhaust pipe is spaced from the top of the second exhaust pipe, a return air channel is formed between the outer wall of the third exhaust pipe and the inner wall of the second exhaust pipe, the lower portion of the return air channel is communicated with the fourth exhaust pipe through a communicating assembly pipe, a first exhaust pipe is arranged in the middle of the upper end of the second exhaust pipe, the upper end side wall of the first exhaust pipe is connected with the upper end side wall of the second exhaust pipe through a circular plate, the diameter of the first exhaust pipe is smaller than that of the third. The invention ensures that gas which moves upwards through the fourth exhaust pipe body such as the sixth exhaust pipe when the gas passes through the two pipe bodies needs to gather towards the sixth exhaust pipe by designing the fourth exhaust pipe and the second exhaust pipe, reduces the gas circulation area, the gathering of the gas in the sixth exhaust pipe is favorable for the condensation of water molecules in the gas so as to reduce the waste of water resources caused by the discharge of the water molecules mixed in the gas along with the gas, the design of the fourth exhaust pipe and the second exhaust pipe also prolongs the flowing path length of the gas in the exhaust assembly so as to be convenient for the condensation of water drops, when the gas is discharged upwards to the pipe orifice of the second exhaust pipe, as the pipe diameter of the first exhaust pipe is smaller than that of the third exhaust pipe, part of the gas flows into the gas return channel through the gap between the two pipe bodies, part of the gas returns into the fourth exhaust pipe particularly for the recovery of steam, the temperature of the gas which returns into the fourth exhaust pipe is reduced, and the mixing of the high-temperature gas The water molecules are condensed, and the air flows in the air return channel to form an empty layer, so that the outward transmission of noise in the second exhaust pipe is reduced.
Optionally, the middle of the sixth exhaust pipe is connected with a second connection rod body horizontally arranged, two ends of the second connection rod body are respectively connected with the inner wall of the sixth exhaust pipe, the upper end of the middle of the second connection rod body is connected with a first connection rod body, the upper end of the first connection rod body is connected with a taper sleeve-shaped separation base member, and the maximum diameter of the separation base member is smaller than the inner diameter of the third exhaust pipe. The design of separation base member is used for reducing the velocity of flow from the gaseous velocity of flow in the sixth blast pipe, and the extension is gaseous through the time of second blast pipe and slow down the gas velocity of flow, slows down gas velocity of flow through the seventh blast pipe and then cooperates the separation base member to improve the condensation of the hydrone in the gas with further slowing down gas velocity of flow and retrieve the water, and the reduction of the velocity of flow can reduce exhaust assembly's exhaust noise simultaneously.
Optionally, a sealing plate is arranged at the air inlet end of the fourth exhaust pipe, a first air inlet through hole is formed in the middle of the sealing plate, a second air inlet through hole is further arranged on the sealing plate in a surrounding mode, the fourth exhaust pipe is internally provided with a seventh exhaust pipe communicated with the first air inlet through hole, the inner wall of the seventh exhaust pipe is provided with circular grooves, the circular grooves are arranged adjacently, the upper end of the seventh exhaust pipe is connected with the fifth exhaust pipe, the pipe diameter of the fifth exhaust pipe gradually increases from bottom to top, and a gap is formed between the fifth exhaust pipe and the sixth exhaust pipe. Gas enters the fourth exhaust pipe through the first air inlet hole and the second air inlet through hole in the sealing plate, and the gas flowing through the surface of the seventh exhaust pipe forms fluctuation by utilizing the inner wall and the outer wall of the seventh exhaust pipe, so that the contact between the gas is improved to the disturbance of ascending air flow, so that the water body in the gas, especially the water body in steam, is intercepted, and the water resource waste and the heat loss are avoided.
Optionally, the water inlet hole is tangent to the pipe wall of the spray pipe and inclines downwards by 10 degrees, the included angle between the axis of the water inlet hole and the axis of the spray pipe on the horizontal plane is 60 degrees, the water in the water chamber enters the spray pipe through the water inlet hole and then rotates along the inner wall of the spray pipe to flow downwards through the design of the water inlet hole, so that a high-speed rotating water film is formed on the inner wall of the spray pipe, a water film skirt is formed on the pipe orifice of the spray pipe, and heat exchange between the water and steam can be accelerated after the formed water film skirt contacts with the steam flowing upwards in the falling.
The invention adopts the design of the structure and the position relationship of the first deoxidizing shell and the second deoxidizing shell to ensure that water enters the first deoxidizing shell after passing through the upper part of the second deoxidizing shell, thereby having the following beneficial effects: the oxygen of the water body subjected to oxygen removal can be completely removed in a short time. Therefore, the invention is a thermal rotary film type deaerator which can deeply deaerate water, effectively recover moisture and reduce steam to exhaust exhausted gas, solve the problem of water carrying in exhaust gas to reduce water resource loss, and has stable operation and no vibration, noise and the like.
Drawings
FIG. 1 is a schematic diagram of a thermodynamic rotary film deaerator;
FIG. 2 is a schematic view of a nozzle configuration;
FIG. 3 is a schematic view of the nozzle and the water inlet;
FIG. 4 is a cross-sectional view of the spout;
FIG. 5 is an enlarged view of portion A of FIG. 4;
FIG. 6 is a schematic view of a water distribution assembly;
FIG. 7 is a top view of the first water distributing member;
FIG. 8 is a schematic view of the interior of the exhaust assembly;
FIG. 9 is a schematic interior view of a second exhaust pipe;
FIG. 10 is a schematic interior view of a fourth exhaust duct;
FIG. 11 is a schematic view of the internal structure of the limiting box;
FIG. 12 is a schematic view of another state of the internal structure of the limiting box;
fig. 13 is an enlarged view of the portion B in fig. 11.
Reference numerals: 10-a first oxygen scavenging housing; 11-a thermometer; 12-acute exhaust pipe orifice; 13-a water outlet; 14-a first steam inlet; 15-a first level tube; 16-a liquid storage tank; 17-a second liquid level tube; 18-a second steam inlet; 19-spare port; 20-a second oxygen-scavenging housing; 21-a third steam input pipe; 22-a filler layer; 30-a water distribution component; 31-a first water distribution member; 32-a water conducting partition; 33-water permeable through grooves; 34-a second water distributing piece; 35-a water-permeable connecting plate; 36-a vent tube body; 40-a water chamber; 41-a spray pipe; 411-water inlet hole; 42-a first feed water inlet; 43-a water baffle; 44-a second feedwater inlet; 50-an exhaust assembly; 51-a first exhaust pipe; 52-second exhaust pipe; 53-a communication fitting pipe; 54-a fourth exhaust pipe; 55-first air intake through hole; 56-fifth exhaust pipe; 57-sixth exhaust pipe; 58-a separation base; 59-a third exhaust pipe; 510-a return air channel; 511-a first connecting rod body; 512-a second connecting rod body; 513 — a second air intake through hole; 60-a seventh exhaust pipe; 70-limiting box body; 71-water inlet through holes; 72-a buoyancy member; 73-a limiting block; 74-communicating base member; 75-a first tube; 76-tee pipe; 77-second tube; 78-a fourth gas transfer port; 79-limiting cavity; 80-a limiting rod; 81-a spring element; 82-blocking head.
Detailed Description
The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:
example 1:
referring to fig. 1-10, a thermodynamic cyclone-type deaerator, comprising:
the first deoxidizing shell 10, the first deoxidizing shell 10 is placed horizontally,
a second oxygen removing shell 20, the second oxygen removing shell 20 is vertically arranged and arranged at the upper part of the first oxygen removing shell 10, the first oxygen removing shell 10 and the second oxygen removing shell 20 are arranged and communicated in a hollow way,
a water chamber 40 is arranged at the upper part in the second deoxygenation shell 20, the second deoxygenation shells 20 at two sides of the water chamber 40 are respectively connected with a first water supply inlet 42 and a second water supply inlet 44, a vertically arranged spray pipe 41 is arranged in the water chamber 40, the upper and lower ports of the spray pipe 41 are arranged at the outer side of the water chamber 40, water inlet holes 411 are spirally arranged on the surface of the spray pipe 41, the upper end part of the second deoxygenation shell 20 at the upper part of the water chamber 40 is connected with an exhaust assembly 50, a water distribution assembly 30 is arranged in the second deoxygenation shell 20 at the lower part of the water chamber 40, a packing layer 22 is arranged below the water distribution assembly 30, and a third steam input pipe 21 is;
According to the invention, through designing the structures and the position relations of the first deoxygenation shell 10 and the second deoxygenation shell 20, water passes through the upper part of the second deoxygenation shell 20 and then enters the first deoxygenation shell 10, so that the water after deoxygenation is completely deoxygenated in a short time, specifically: the water body enters the water chamber 40 of the second deoxidizing shell 20 through the first water supply inlet 42, or the condensed water enters the water chamber 40 of the second deoxidizing shell 20 through the second water supply inlet 44, the water body entering the water chamber 40 enters the interior of the water chamber along the water inlet holes 411 on the side wall of the vertically arranged spray pipe 41, the water body rotates along the inner wall of the spray pipe 41 and flows downwards, the water body flowing at high speed forms a water film rotating at high speed on the inner wall of the spray pipe 41, when the water body reaches the bottom nozzle of the spray pipe 41 through the downward flow channel, the water body flowing out of the spray pipe 41 forms a water film skirt with a certain rotation angle under the action of centrifugal force, and because the first steam inlet 14, the second steam inlet 18 and the third steam input pipe 21 are arranged, a large amount of steam is sent into the first deoxidizing shell 10 and the second deoxidizing shell 20, the steam of the first deoxidizing shell 10 and the second deoxidizing shell 20 continuously moves upwards, and, wherein the water membrane skirt's formation has effectively enlarged the contact surface area of water and steam, can accelerate the heat exchange of water and steam and realize that dissolved gas gets rid of the speed and improve like this, later the water falls down to water distribution subassembly 30 by spray tube 41 and continues to absorb heat and contact with steam, the water through water distribution subassembly 30 further contacts with steam through random packing layer 22 of stacking again, so that further heat the water and make its inside dissolved gas discharge fast, at last the water gets into first deoxidization casing 10, the steam of sending into in the first deoxidization casing 10 carries out degree of depth deoxidization in order to realize the water to the further heating of water, reach the thorough effect of deoxidization.
The bottom of the first deoxidizing shell 10 is provided with a support leg, the side of the first deoxidizing shell is provided with an emergency exhaust pipe opening 12, the emergency exhaust pipe opening 12 is controlled by an electric control valve, and the upper end of the first deoxidizing shell 10 is provided with a standby opening 19. The stabilizer blade bottom surface of first deoxidization casing 10 bottom preferably is equipped with the block rubber or establishes spring part etc. in the stabilizer blade for reduce the oxygen-eliminating device vibrations at the during operation and improve the frictional force that removes oxygen and ground and lead to the excessive displacement of oxygen-eliminating device in order to prevent accidental collision, the urgent exhaust pipe mouth 12 that is equipped with in first deoxidization casing 10 side is used for the urgent emission of the inside water of first deoxidization casing 10 under the emergency, and the design of reserve mouth 19 is used for pressure release or return water etc..
The water distribution subassembly 30 includes the second water distribution piece 34 with the laminating of second deoxidization casing 20 inner wall, second water distribution piece 34 is the pipe structure, link up from top to bottom, second water distribution piece 34 middle part is equipped with coaxial body of ventilating 36, the terminal surface is connected with body of ventilating 36 through cyclic annular connecting plate 35 that permeates water about the second water distribution piece 34, the connecting plate 35 face that permeates water sets up with horizontal plane slope, the body of ventilating 36 upper ends is connected with the first water distribution piece 31 of taper sleeve structure, first water distribution piece 31 surface is encircleed and is set up water guide baffle 32, water guide through groove 33 is seted up on first water distribution piece 31 surface between water guide baffle 32. The water body of the nozzle 41 above the water distribution assembly 30 falls onto the water distribution assembly 30 in a water film skirt shape, first contacts with the surface of the first water distribution member 31, is separated into regions by the water guide partition 32 arranged on the surface of the first water distribution member 31, and falls through the water permeable through groove 33, a water film is formed in the falling process, the formed water film falls onto the surface of the water permeable connecting plate 35 of the second water distribution member 34, falls into the water droplet shape in the second water distribution member 34 in a water droplet shape through the water permeable holes on the surface, is mixed with the water droplet shape, then falls through the water permeable connecting plate 35 at the bottom of the second water distribution member 34 in a water droplet shape to the packing layer 22, meanwhile, steam is input to the first water distribution member 31 and the second water distribution member 34 through the air duct body 36, in the above process, the steam input in the process of passing through the water distribution assembly by the first water distribution assembly 31 and the second water distribution assembly 34 in a turbulent state can form proper bubbling in the water body gathered in the second water distribution assembly 34 to achieve the effect of deoxidizing depth, and the hollow cavity chamber that upper and lower water connection board 35 and second water distribution piece 34 that permeates water formed by design is favorable to the gathering of steam in order to improve the heating effect to the water, and the ascending circulation resistance that circulates of the steam that gathers also adapts to reducing, improves steam flow conductivity.
The water permeable through groove 33 is arc-shaped, the first water distributing part 31 is arranged at the upper end of the second water distributing part 34, a distance is formed between the first water distributing part and the second water distributing part, the distance range is 5-20cm, water permeable holes are uniformly distributed on the surface of the water permeable connecting plate 35, and water permeable holes are uniformly distributed on the surface of the air vent pipe body 36. The distance between the first water distribution piece 31 and the second water distribution piece 34 is designed to be a certain distance so that the contact time between a water curtain falling from the first water distribution piece 31 and steam is prolonged to improve the gas discharge effect in the water body, and the water permeable holes uniformly distributed on the surfaces of the water permeable connecting plate 35 and the air permeable pipe body 36 are convenient for the flow of the water body and the gas to reduce the upward circulation resistance of the steam and the downward circulation blockage of the water body.
The exhaust assembly 50 comprises a fourth exhaust pipe 54, the upper end of the fourth exhaust pipe 54 is coaxially connected with a second exhaust pipe 52, the middle part of the connecting end of the fourth exhaust pipe 54 and the second exhaust pipe 52 is communicated through a sixth exhaust pipe 57, a third exhaust pipe 59 with a diameter smaller than that of the second exhaust pipe 52 is arranged in the second exhaust pipe 52, the top of the third exhaust pipe 59 is spaced from the top of the second exhaust pipe 52, a return air channel 510 is formed between the outer wall of the third exhaust pipe 59 and the inner wall of the second exhaust pipe 52, the lower part of the return air channel 510 is communicated with the fourth exhaust pipe 54 through a communicating and assembling pipe 53, a first exhaust pipe 51 is arranged in the middle part of the upper end of the second exhaust pipe 52, the upper end side wall of the first exhaust pipe 51 is connected with the upper end side wall of the second exhaust pipe 52 through a circular ring plate, the diameter of the first exhaust pipe 51 is smaller than that of the third exhaust. The invention designs the fourth exhaust pipe 54 and the second exhaust pipe 52 in such a way that the gas passes through the sixth exhaust pipe 57 when passing through the two pipes, so that the gas moving upwards through the fourth exhaust pipe 54 needs to gather towards the sixth exhaust pipe 57, the gas flow area is reduced, the gathering of the gas in the sixth exhaust pipe 57 is favorable for the condensation of water molecules in the gas so as to reduce the waste of water resources caused by the discharge of the water molecules mixed in the gas along with the gas, the design of the fourth exhaust pipe 54 and the second exhaust pipe 52 also prolongs the flow path length of the gas in the exhaust assembly 50 so as to facilitate the condensation of water drops, when the gas is discharged upwards to the pipe opening of the second exhaust pipe 52, as the pipe diameter of the first exhaust pipe 51 is smaller than that of the third exhaust pipe 59, part of the gas flows into the gas return channel 510 through the gap between the two pipes, part of the gas returns into the fourth exhaust pipe 54, particularly for the recovery of steam, the temperature of the gas flowing back into the fourth exhaust pipe 54 is reduced, and the gas is mixed with the high-temperature gas in the fourth pipe 54, so that water molecules in the gas are condensed, and the flowing of the gas in the air return channel 510 forms an empty layer, so that the outward transmission of noise in the second exhaust pipe 52 is reduced.
The middle part of the sixth exhaust pipe 57 is connected with a second connecting rod body 512 which is horizontally arranged, two ends of the second connecting rod body 512 are respectively connected with the inner wall of the sixth exhaust pipe 57, the upper end of the middle part of the second connecting rod body 512 is connected with a first connecting rod body 511, the upper end of the first connecting rod body 511 is connected with a separation base member 58 which is in a taper sleeve shape, and the maximum diameter of the separation base member 58 is smaller than the inner diameter of the third exhaust pipe 59. The design of separation base member 58 is used for reducing the velocity of flow of the gas that flows out from in the sixth blast pipe 57, and the time of extension gas through second blast pipe 52 and slow down the gas velocity of flow again cooperate separation base member 58 to further slow down gas velocity of flow after slowing down the gas velocity of flow and improve the condensation of the water molecule in the gas and retrieve the water, and the reduction of velocity of flow can reduce exhaust noise of exhaust subassembly 50 simultaneously.
A sealing plate is arranged at the air inlet end of the fourth exhaust pipe 54, a first air inlet through hole 55 is formed in the middle of the sealing plate, second air inlet through holes 513 are further arranged on the sealing plate in a surrounding mode, a seventh exhaust pipe 60 communicated with the first air inlet through hole 55 is arranged in the fourth exhaust pipe 54, circular grooves are formed in the inner wall of the seventh exhaust pipe 60 and are arranged adjacently, the upper end of the seventh exhaust pipe 60 is connected with a fifth exhaust pipe 56, the pipe diameter of the fifth exhaust pipe 56 is gradually enlarged from bottom to top, and a gap is formed between the fifth exhaust pipe 56 and the sixth exhaust pipe 57. The gas enters the fourth exhaust pipe 54 through the first gas inlet hole 55 and the second gas inlet through hole 513 on the sealing plate, and the gas flowing through the surface of the seventh exhaust pipe 60 is made to fluctuate by the inner and outer walls of the seventh exhaust pipe to disturb the ascending gas flow, so that the contact between the gas is improved, the gas is convenient to be trapped by the water body in the gas, particularly the water body in the steam, and the waste of water resources and the heat loss are avoided.
The water inlet holes 411 are tangent to the pipe wall of the spray pipe 41 and incline downwards by 10 degrees, the included angle between the axes of the water inlet holes 411 and the axis of the spray pipe 41 on the horizontal plane is 60 degrees, through the design of the water inlet holes 411, the water in the water chamber 40 enters the spray pipe 41 through the water inlet holes 411 and then rotates along the inner wall of the spray pipe 41 to flow downwards, so that a high-speed rotating water film is formed on the inner wall of the spray pipe 41, a water film skirt is formed at the nozzle of the spray pipe 41, and the formed water film skirt can accelerate heat exchange between the water and steam after contacting with the steam flowing upwards in the falling.
Example 2:
the further optimization scheme of the embodiment based on the embodiment 1 is as follows: referring to fig. 11-13, a limiting box 70 is disposed in the first oxygen-removing housing 10, the upper end of the limiting box 70 is connected to the inner upper wall of the first oxygen-removing housing 10, the lower end of the limiting box 70 is connected to the inner lower wall of the first oxygen-removing housing 10, the lower side wall of the limiting box 70 is provided with a water inlet hole 71, a buoyancy member 72 is disposed in the limiting box 70, the upper side wall of the limiting box 70 is connected to a communicating base member 74, a limiting cavity 79 is disposed in the communicating base member 74, the communicating base member 74 is further provided with a fourth gas transmission hole 78 penetrating the communicating base member 74 to allow gas to enter the limiting box 70, the communicating base member 74 is connected to a three-way pipe 76 through a pipe body, the other pipe opening of the three-way pipe 76 is communicated with the second steam inlet 18 and/or the third steam inlet pipe 21 through a first pipe 75, the third pipe opening of the three-way pipe 76 is communicated, spring part 81 middle part cross-under gag lever post 80 and be close to the gag lever post 80 tip of fourth gas transmission hole 78 end and set up shutoff head 82, the shrouding that diameter is greater than spring part 81 is connected to the shutoff head 82 bottom surface, and the gag lever post 80 other end is located in spacing box 70 and is connected with buoyancy 72, is equipped with the stopper 73 of being connected with gag lever post 80 on the buoyancy 72. The buoyancy member 72 is placed inside the limiting box 70 arranged in the first oxygen removing housing 10, the limiting box 70 is used to limit the floating space of the buoyancy member 72, so that the floating space rises with the rising of the water level inside the first oxygen removing housing 10, when the floating height of the buoyancy member 72 is higher, the floating space indicates that the water in the first oxygen removing housing 10 is more, which is the heating of the water body and the gas discharging efficiency in the water body will be reduced, therefore, the limiting rod 80 is gradually righted by the buoyancy member 72 in the upward floating process, the sealing head 82 seals the orifice of the fourth gas transmission hole 78, so that the steam sent into the first oxygen removing housing 10 from the first steam inlet 14 is directly sent into the first through pipe 75, the steam input amount in the first through pipe 75 is increased to enlarge the steam input amount of the second steam inlet 18 and/or the third steam input pipe 21, and the increase of the steam input amount of the second steam inlet 18 and/or the third steam input pipe 21 is beneficial to slowing down the falling speed of the water body in the second oxygen removing housing, the time is striven for first deoxidization casing 10 discharge water, realizes the inside water yield of first deoxidization casing 10 of autonomic regulation, keeps its inside water fully heating to reach thorough deoxidization purpose.
Example 3:
the further optimization scheme of the embodiment based on the embodiment 1 is as follows: the water chamber 40 is provided with a water baffle 43, the surface of the water baffle 43 is provided with through holes or meshes, the first deoxidizing shell 10 is provided with a thermometer 11, and a detection probe of the thermometer 11 is arranged in the first deoxidizing shell 10.
Test example 1:
in this embodiment, a replacement page of the water distribution component 30 is a water grate on the basis of the scheme of the embodiment 1, and the water grate is made of angle steel with the diameter of 30 × 30mm, and is arranged in a cross way, and has 4 layers.
Test example 2:
in this embodiment, a water film-filler type deaerator is used to replace the thermal film deaerator of embodiment 1, and the specific scheme is as described in CN 202229167U.
And (3) oxygen removal test:
the oxygen removal tests were carried out on the boiler feed water bodies and the condensate water bodies by the apparatuses of examples 1 to 2 and test examples 1 to 2, and the specific parameters are shown in table 1, and the results are shown in table 2.
TABLE 1 oxygen removal test data for each group of deaerators
TABLE 2 oxygen removal test results for each oxygen remover group
| Item | Thermal load MJ/h | Dissolved oxygen in waterμg/L | The dissolved oxygen content of the effluent is mug/L |
| Example 1 (deaerator) | 24.24×103 | 16.4 | 6.3 |
| Example 2 (deaerator) | 23.59×103 | 20.3 | 6.0 |
| Comparative example 1 (deaerator) | 23.79×103 | 18.5 | 8.5 |
| Comparative example 2 (deaerator) | 24.15×103 | 17.6 | 9.2 |
From the above test results, it can be seen that the deaerator of example 1-2 has the deaerating effect, because of the equipment of comparative example 1-2, noise detection was performed on the exhaust port of each equipment while deaerating, and it was determined that the volume of the exhaust port of example 1 was 35dB, the volume of the exhaust port of example 2 was 32dB, the volume of the exhaust port of test example 1 was 52dB, and the volume of the exhaust port of test example 2 was 69 dB.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the principle of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (8)
1. A thermodynamic rotating film deaerator comprising:
a first oxygen removal housing (10), the first oxygen removal housing (10) being horizontally disposed,
a second oxygen removing shell (20), wherein the second oxygen removing shell (20) is vertically arranged and arranged at the upper part of the first oxygen removing shell (10), the first oxygen removing shell (10) and the second oxygen removing shell (20) are arranged and communicated in a hollow way,
a water chamber (40) is arranged at the upper part in the second deoxygenation shell (20), the second deoxygenation shells (20) at the two sides of the water chamber (40) are respectively connected with a first water supply inlet (42) and a second water supply inlet (44), vertically arranged spray pipes (41) are arranged in the water chamber (40), the upper and lower ports of each spray pipe (41) are arranged at the outer side of the water chamber (40), water inlet holes (411) are spirally arranged on the surfaces of the spray pipes (41), the upper end part of the second deoxygenation shell (20) at the upper part of the water chamber (40) is connected with an exhaust assembly (50), a water distribution assembly (30) is arranged in the second deoxygenation shell (20) at the lower part of the water chamber (40), a packing layer (22) is arranged below the water distribution assembly (30), and a third steam input pipe (21) is arranged between the water distribution assembly (30) and;
first deoxidization casing (10) top and bottom are equipped with second steam inlet (18) and first steam inlet (14) respectively, first deoxidization casing (10) bottom still is equipped with outlet (13), two piece at least first liquid level pipe (15) are connected to first deoxidization casing (10) side, first liquid level pipe (15) level height differs and first liquid level pipe (15) are the level setting, second liquid level pipe (17) intercommunication through vertical setting between first liquid level pipe (15), first liquid level pipe (15) and second liquid level pipe (17) junction are equipped with liquid reserve tank (16).
2. The thermodynamic cyclone-membrane deaerator of claim 1, wherein: first deoxidization casing (10) bottom is equipped with the stabilizer blade, and side is equipped with the acute exhaust mouth of pipe (12), the acute exhaust mouth of pipe (12) are controlled by electric control valve, first deoxidization casing (10) upper end sets up reserve mouth (19).
3. The thermodynamic cyclone-membrane deaerator of claim 1, wherein: water distribution subassembly (30) include second water distribution spare (34) with the laminating of second deoxidization casing (20) inner wall, second water distribution spare (34) are the pipe structure, link up from top to bottom, second water distribution spare (34) middle part is equipped with coaxial body (36) of ventilating, the terminal surface is connected with body (36) of ventilating through cyclic annular connecting plate (35) that permeates water about second water distribution spare (34), the connecting plate (35) face that permeates water sets up with the horizontal plane slope, it is connected with the first water distribution spare (31) of taper sleeve structure to ventilate body (36) upper end, first water distribution spare (31) surface is encircleed and is set up water guide baffle (32), water guide through groove (33) are seted up on first water distribution spare (31) surface between water guide baffle (32).
4. The thermodynamic cyclone-film deaerator of claim 3, wherein: the water permeable through grooves (33) are arc-shaped, the first water distribution piece (31) is arranged at the upper end of the second water distribution piece (34), a distance is formed between the first water distribution piece and the second water distribution piece, the range of the distance is 5-20cm, water permeable holes are uniformly distributed in the surface of the water permeable connecting plate (35), and water permeable holes are uniformly distributed in the surface of the air vent pipe body (36).
5. The thermodynamic cyclone-membrane deaerator of claim 1, wherein: the exhaust assembly (50) comprises a fourth exhaust pipe (54), the upper end of the fourth exhaust pipe (54) is coaxially connected with a second exhaust pipe (52), the middle parts of the connecting ends of the fourth exhaust pipe (54) and the second exhaust pipe (52) are communicated through a sixth exhaust pipe (57), a third exhaust pipe (59) with the diameter smaller than that of the second exhaust pipe (52) is arranged in the second exhaust pipe (52), the top of the third exhaust pipe (59) is spaced from the top of the second exhaust pipe (52), an air return channel (510) is formed between the outer wall of the third exhaust pipe (59) and the inner wall of the second exhaust pipe (52), the lower part of the air return channel (510) is communicated with the fourth exhaust pipe (54) through a communicating and assembling pipe (53), a first exhaust pipe (51) is arranged in the middle part of the upper end of the second exhaust pipe (52), and the upper end side wall of the first exhaust pipe (51) is connected with the upper end, first blast pipe (51) pipe diameter is less than third blast pipe (59) and first blast pipe (51) body bottom locate in third blast pipe (59), first blast pipe (51) bottom end face has the interval with third blast pipe (59) up end.
6. The thermodynamic cyclone-film deaerator of claim 5, wherein: sixth blast pipe (57) middle part is connected with the second connection body of rod (512) that a level set up, the second connection body of rod (512) both ends respectively with sixth blast pipe (57) inner wall connection, the first connection body of rod (511) is connected to second connection body of rod (512) middle part upper end, first connection body of rod (511) upper end is connected with separation base member (58) of taper sleeve form, separation base member (58) maximum diameter is less than third blast pipe (59) internal diameter.
7. The thermodynamic cyclone-film deaerator of claim 5, wherein: the air inlet end of the fourth exhaust pipe (54) is provided with a sealing plate, a first air inlet through hole (55) is formed in the middle of the sealing plate, second air inlet through holes (513) are further arranged on the sealing plate in a surrounding mode, a seventh exhaust pipe (60) communicated with the first air inlet through hole (55) is arranged in the fourth exhaust pipe (54), circular grooves are formed in the inner wall of the seventh exhaust pipe (60) and are arranged adjacently, the upper end of the seventh exhaust pipe (60) is connected with a fifth exhaust pipe (56), the pipe diameter of the fifth exhaust pipe (56) gradually enlarges from bottom to top, and a gap is formed between the fifth exhaust pipe (56) and the sixth exhaust pipe (57).
8. The thermodynamic cyclone-membrane deaerator of claim 1, wherein: the water inlet hole (411) is tangent to the pipe wall of the spray pipe (41) and inclines downwards by 10 degrees, and the included angle between the axis of the water inlet hole (411) and the axis of the spray pipe (41) on the horizontal plane is 60 degrees.
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| CN113310512A (en) * | 2021-05-17 | 2021-08-27 | 扬州华大锅炉有限公司 | Thermodynamic system corrosion protection on-line detection device for hot water boiler |
| CN114893393A (en) * | 2022-04-21 | 2022-08-12 | 北京太阳宫燃气热电有限公司 | Exhaust device of water feeding pump of gas boiler |
| CN116006959A (en) * | 2023-01-31 | 2023-04-25 | 江苏邦久石化装备有限公司 | Deaerator for boiler heating system |
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Denomination of invention: Thermal rotary film deaerator Effective date of registration: 20231229 Granted publication date: 20210917 Pledgee: Bank of China Limited Lianyungang high tech Zone sub branch Pledgor: LIANYUNGANG JIU CHENG POWER AUXILIARY MACHINERY CO.,LTD. Registration number: Y2023980074494 |