CN1187378A - Method and device for vacuum deoxidation of boiler water - Google Patents
Method and device for vacuum deoxidation of boiler water Download PDFInfo
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- CN1187378A CN1187378A CN96111468A CN96111468A CN1187378A CN 1187378 A CN1187378 A CN 1187378A CN 96111468 A CN96111468 A CN 96111468A CN 96111468 A CN96111468 A CN 96111468A CN 1187378 A CN1187378 A CN 1187378A
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Abstract
A method for vacuum oxygen removal from water supplied to boiler includes such technological steps as spraying the water to be deoxidized by nozzle in vacuum deaerator to form jet beam, reducing pressure and expanding volume during spray to escape out dissolved oxygen, flushing the deaerated water in the state of jet into pressure-increasing pipe connected to output of vacuum deaerator to raise its pressure and generate enough cavitation allowance, and pumping it into boiler. The oxygen-containing steam goes through demoistening heat exchanger, where most of steam is condensed into water and further deaerated by deaerating heater. The rest of oxygen-containing steam is exhausted. Its advantages are simple structure, low-position arrangement and no need of high-flow spray suction pump.
Description
The present invention relates to boiler feedwater thermal de-aeration technology, specifically, it relates to a kind of vacuum oxygen-removing method and the device of boiler feedwater.
Contain dissolved oxygen in the boiler feedwater, it makes the metal surface produce oxygen corrosion, causes serious harm to boiler, for preventing oxygen corrosion, must carry out deoxygenation to boiler feedwater.At present, the most common with thermal de-aeration in the deoxidation method commonly used, thermal de-aeration is to heat by treating deaerated water, reduces oxygen solubility in water, and dissolved oxygen is overflowed to the space in water, is taken away by steam then, reaches the deoxygenation purpose.
Thermal de-aeration is divided into 3 kinds of pressure type, air suspended type, vacuum type etc.Wherein, pressure type and atmospheric-type thermodynamic deoxidizing device internal pressure are higher than atmospheric pressure, the deoxygenation exhaust can be passed through a valve simply to airborne release, the deaerated water temperature that it provides is higher, and the high-temperature boiler feedwater makes economizer can not fully absorb the boiler smoke heat, improve exhaust gas temperature, reduced boiler efficiency.Vacuum type thermal deaerator internal pressure is lower than atmospheric pressure, and the deaerated water temperature that provides is lower, and such as being everlasting below 60 ℃, the deaerated water of this lower temperature can improve boiler efficiency as boiler feedwater.But vacuum dust cather has following shortcoming: the one, and complex structure, it is many to consume metal, and volume is big, and weight is big, the manufacturing cost height; The 2nd, it needs the aspiration pump of a big flow, extracts oxygen-containing steam out, keeps vacuum in the oxygen-eliminating device.The aspiration pump of this big flow is steam jet pump or water stream injection pump normally, it is a lot of that steam jet pump consumes steam, and do not have the place in vapour source not use in the hot-water boiler room etc., and water stream injection pump efficient is very low, power consumption is big, also need build a cover jet pump water cyclic utilization system; The 3rd, vacuum dust cather produces saturated deaerated water, for preventing the feed pump cavitation, needs the high-order layout of vacuum dust cather, and capital construction and mounting cost are very high.These drawbacks limit the universal use of vacuum dust cather.
In Wang Fangbian " boiler water processing " (China Construction Industry Press, 1993) book, to boiler feedwater thermal de-aeration technology, comprise vacuum deoxygenization technology, done to develop.
The objective of the invention is to propose a kind of vacuum deoxidation of boiler water method and apparatus, this vacuum oxygen-removing method deoxygenation is rapid, reliable, and discharging oxygen-containing steam amount is few; This vacuum deaerating plant is simple in structure, and metal consumption is few, and the aspiration pump of flow can be arranged by low level greatly.
For achieving the above object, the present invention releases a kind of injection dilatation deoxygenation, and the vacuum oxygen-removing method of wet exhaust falls in condensation.
Treat that at first deaerated water is raised to a certain pressure by water pump, arrive a certain temperature by heat exchanger heats again, enter vacuum dust cather then.Under differential pressure action, treat that deaerated water passes through a nozzle and forms the pencil jet, spray into the inner space of vacuum dust cather, the vacuum dust cather internal pressure is lower than the saturation pressure for the treatment of deaerated water temperature correspondence, treat deaerated water decompression and expansion at once, from water surface to water inside, on the infinitesimal water body of everywhere, vaporization takes place simultaneously with deoxygenation, and the oxygen-containing steam that flash steam that is produced and effusion oxygen form riddles vapor phase space.If the ratio S that treats dissolved oxygen content in the deaerated water before the effusion amount of oxygen of vapor phase space and the dilatation is called the deoxygenation rate, treat that by analysis the temperature difference of deaerated water and deaerated water is the contribution of degree of superheat Δ t to the dilatation deoxygenation, and the balance restrictive function of the Henry'S coefficient K of the Henry's law of consideration description gas dissolution properties in water, the calculating formula that can draw theoretical deoxygenation rate S is:
R, Ps, K are the latent heat of vaporization, saturated vapor pressure, the Henry'S coefficient of corresponding deaerated water temperature in the formula.According to following formula, as long as treat deaerated water enough degree of superheat Δ t are arranged, just can in the dilatation deoxygenation, reach desired deoxygenation rate S, but consider departing from of real process and desirable balance process, actual deoxygenation rate and theoretical deoxygenation rate have certain deviation.
Treat in the course of injection of deaerated water in vacuum dust cather that after the dilatation deoxygenation, jet shape is dispersed a bit, but the deaerated water that produces keeps still high flow velocities to enter the diffuser pipe that is connected on the vacuum dust cather delivery port.In diffuser pipe, the mobile kinetic energy of part changes the pressure energy into, makes deaerated water pressure be higher than the saturation pressure of its temperature correspondence.When diffuser intake reaches certain flow rate, can make saturation pressure exceed 0.1MPa through its temperature correspondence of deaerated water pressure ratio behind the diffuser pipe, be equivalent to have the net positive suction head more than 10 meters, cavitation can not take place in the boiler feed pump that such deaerated water enters the co-altitude layout.
Treat that the oxygen-containing steam that deaerated water injection dilation process produces passes through a dividing wall type heat exchanger cooling, wherein most of steam condenses, and remaining oxygen-containing steam is discharged to outside the vacuum dust cather by aspiration pump.If the oxygen-containing steam temperature is t before the cooling
1, the oxygen-containing steam volume is V
1, after the cooling, the oxygen-containing steam temperature is t
2, volume is V
2, the volume ratio V before and after the cooling
2/ V
1Be calculated as follows:
Ps (t in the formula
1), Ps (t
2) being the saturated vapor pressure before and after the cooling, r is the latent heat of vaporization of deaerated water, and x is a mass component for the treatment of the on-condensible gas that comprises oxygen that dissolves in the deaerated water, and Δ t is the degree of superheat for the treatment of deaerated water.
Oxygen-containing steam flows to downwards on the heater in the condensate water on the dividing wall type heat exchanger and is heated, and the dissolved oxygen in the condensate water is overflowed to vapor phase space, and is taken away by the flash steam that flow through, and then, the deoxygenation condensate water flows in the deaerated water downwards.
Realize that above-mentioned injection dilatation deoxygenation, condensation fall the vacuum deaerating plant of wet exhaust and comprise:
The vacuum dust cather housing, it is made of a circular cylinder body that stands up and upper and lower two ellipse heads, be provided with exhaust outlet at the upper cover middle part, be provided with the deaerated water outlet, on cylindrical shell, be provided with a plurality of water inlets and the delivery port that connect water circulation pipe at the low head middle part;
Aspiration pump is optionally used electronic aspiration pump, and as diaphragm aspiration pump or water ring aspiration pump, its air inlet links to each other with the exhaust outlet of vacuum dust cather upper cover, and its gas outlet leads directly to ambient air;
The deoxygenation water pump is used for to treating the deaerated water pressurization, and its water inlet is received to the vacuum dust cather conveying and treated coming on the water pipe of deaerated water;
Fall wet heat exchanger, it is installed in the vacuum dust cather, and occupies one section space, housing top, and it is a dividing wall type heat exchanger, and a side is a water at low temperature, and what opposite side was cooled is oxygen-containing steam, and its water inlet pipe links to each other with the delivery port of deoxygenation water pump;
The deoxygenation reheater, it is that level is installed in the vacuum dust cather housing, is positioned at a tubular heat exchanger that falls wet heat exchanger bottom;
Steam-water separator, it is arranged in the vacuum dust cather housing, is positioned at the bottom of deoxygenation reheater, is shutter shape, is horizontally disposed with;
Nozzle and governor motion thereof, they are arranged in the vacuum dust cather housing, between the steam-water separator and the deoxygenation water surface, nozzle is made up of outer tube and wherein adjustable moving core, governor motion is made up of ball float and one group of connecting rod of swimming on the deoxygenation water surface, and jet expansion faces the deaerated water outlet of vacuum dust cather low head middle part;
Diffuser pipe, it is made up of inlet, trunnion, anemostat, and the inlet of diffuser pipe is connected in the outlet of vacuum dust cather deaerated water, and the center line of diffuser pipe overlaps with nozzle centerline;
Boiler feed pump, its water inlet pipe are connected in the outlet of diffuser pipe, and its outlet pipe is carried deaerated water to boiler;
Deaerating heater, it is a contact water heater, constitute by shell of one section porous inner tube cover, the import of porous inner tube connects from boiler next steam pipe or hot-water line, a water inlet and a delivery port are arranged on the shell, water inlet is received the deaerated water for the treatment of of heating, and delivery port connects the water inlet of nozzle by the deoxygenation reheater.
The advantage of vacuum deoxidation of boiler water method and apparatus of the present invention is:
(1) the present invention makes the vacuum dust cather designs simplification, reduces cost;
(2) the present invention produces the deaerated water that enough net positive suction heads are arranged, and enter boiler feed pump and cavitation can not take place, thereby the present invention can arrange by low level;
(3) the oxygen-containing steam amount of the present invention's discharging significantly reduces, thereby does not need the steam jet pump or the water stream injection pump of big flow, can use low power other electronic aspiration pump, and is not only energy-conservation as diaphragm aspiration pump or water ring aspiration pump, and operation is convenient.
Fig. 1 is a vacuum deaerating plant system schematic of the present invention;
Wet heat exchanger structure figure falls in Fig. 2;
Fig. 3 is a deoxygenation reheater structure chart;
Fig. 4 is nozzle and governor motion structure chart;
Fig. 5 is the diffuser pipe structure chart;
Fig. 6 is the deaerating heater structure chart.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Fig. 1 illustrates the system schematic of each part of vacuum deaerating plant of the present invention and correlation thereof.Treat that at first deaerated water is by 3 pressurizations of deoxygenation water pump, pass vacuum dust cather housing 1, treat that deaerated water enters and fall wet heat exchanger 4, enter in the shell of deaerating heater 13 through circulation pipe 12 again, manage the porous inner tube that 11 steam that attract or hot water enter deaerating heater 13 by boiler, the mezzanine space of pipe and shell in spraying into again, through mixing contact, the deaerated water for the treatment of that has been heated enters deoxygenation reheater 5 through circulation pipe 14, enter nozzle 7 by circulation pipe 15 again, the deaerated water that sprays the dilatation generation enters diffuser pipe 9, is sent to boiler by boiler feed pump 10 then.Spray the oxygen-containing steam process steam-water separator 6 that dilatation produces, pass deoxygenation reheater 5, flow through and fall when wetting heat exchanger 4, wherein most of steam condenses, and the residue oxygen-containing steam is discharged outside the vacuum dust cather housing 1 by aspiration pump 2.The condensate water of falling wet heat exchanger 4 surfaces flows to downwards on the outer surface of deoxygenation reheater 5, and after being heated, the dissolved oxygen in the condensate water is overflowed to vapour phase, is taken away by the flash steam that upwards flows then.Remove the condensate water and the steam-water separator 6 isolated deaerated water of peroxide, flow into the deoxygenation water surface downwards.The flow rates controlled of nozzle 7 is in by the ball float on the deoxygenation water surface and one group of governor motion 8 that connecting rod is formed, when in the vacuum oxygen-eliminating device during deoxygenation water surface variation in altitude, governor motion 8 is regulated the outlet of nozzle 7 automatically, reach the purpose of regulating nozzle 7 rates of discharge, for example when the deoxygenation water surface descends, governor motion 8 is regulated nozzle 7, and its flow is strengthened.
If the deaerated water temperature is 70 ℃, the dilatation temperature difference is 4 ℃, and by the calculating formula of aforementioned deoxygenation rate S, and with the relevant data substitution, theoretical deoxygenation rate S is:
If treat that it is 10mg/L that deaerated water contains oxygen, deaerated water contains oxygen and is:
10 * (1-0.9994)=0.006 (mg/L) establishes and treat to contain in the deaerated water the various fixed gas scale of constructions that comprise dissolved oxygen is 30mg/L, and being converted into mass component is 30 * 10
-6, the oxygen-containing steam temperature of spraying the dilatation generation is 70 ℃, and after falling wet heat exchanger, temperature is 50 ℃, and the formula by aforementioned calculating oxygen-containing steam cooling front and back volume ratio will have the related parameter substitution, be calculated as follows:
Fig. 2 is mounted in the vacuum dust cather, and occupy wet heat exchanger 4 structural representations of falling of one section space, housing top, it is a dividing wall type heat exchanger, this figure of concrete structure has represented the dividing wall type heat exchanger of a plate-fin, and the one side is a water at low temperature, and horizontal direction flows, three flow processs, available not heating treat deaerated water, what opposite side was cooled is the oxygen-containing steam that dilatation produces, and flows from bottom to top.Be anti-oxygen corrosion, fall wet heat exchanger 4 and adopt corrosion-resistant metallic material to make, or electroplate corrosion resistant metal.
Fig. 3 is that level is installed in deoxygenation reheater 5 structural representations in the vacuum dust cather housing, it is a tubular heat exchanger, hot water flows in pipe, pipe is outer to be from falling the condensate water that wet heat exchanger 4 surfaces flow down, after here being heated, dissolved oxygen in the condensate water is overflowed to vapor phase space, and flows into the deoxygenation water surface downwards except the condensate water of oxygen.The hot water temperature need be than the saturation temperature height of vacuum dust cather housing 1 internal pressure correspondence in the pipe, and that can utilize usually from being heated of flowing out of deaerating heater 13 treats that deaerated water is as hot water in the pipe.The tubulation arrangement mode of deoxygenation reheater 5 is fork row's structure, and transverse pipe centre-to-centre spacing L is less than tube outer diameter d, guaranteeing can both to flow to the surface of deoxygenation reheater 5 from falling each bundle condensate water that wet heat exchanger 4 flows down, and is not missed.Laterally tubulation has four rows at least, to guarantee that each bundle condensate water at least twice flows through the heat pipe surface and is heated deoxygenation.The tubulation of deoxygenation reheater 5 adopts the corrosion resistant metal pipe, perhaps the inside and outside corrosion resistant metal of electroplating of pipe.
Fig. 4 has provided the structure and the correlation of nozzle 7 and governor motion 8, and nozzle 7 comprises outer tube 7a and moving core 7b two parts, and moving core 7b places outer tube 7a, and the annular space of the two formation is the runner of water.Outer tube 7a system is by elastic outer pipe 7a
1, rigidity outer tube 7a
2, conical pipe 7a
3, outlet pipe 7a
4Constitute, moving core 7b is by end cap 7b
1, stem stem 7b
2, tapered core 7b
3, water core 7b
4Constitute; Governor motion 8 comprises ball float 8a, floating ball rod 8b, intermediate connecting rod 8c, the moving core connecting rod 8d that swims in deoxygenation water surface center.Floating ball rod 8b is horizontally disposed with, its end is fixed on the ball float, the other end is connected with vacuum dust cather housing 1 with hinge, intermediate connecting rod 8c vertically is provided with, its lower end is gone up certain with floating ball rod 8b and a bit is connected with hinge, its upper end is connected with hinge with the end of moving core connecting rod 8d, and moving core connecting rod 8d is horizontally disposed with the end cap 7b of its other end and moving core 7b
1Connect with hinge, moving core connecting rod 8d go up certain a bit be fixed on outer tube 7a on a support be connected with hinge.
When in the vacuum oxygen-eliminating device during deoxygenation water surface height change, ball float 8a produces displacement, and by floating ball rod 8b, intermediate connecting rod 8c, moving core connecting rod 8d, the moving core 7b that drives nozzle 7 moves elastic outer pipe 7a
1Length variations, conical pipe 7a
3With tapered core 7b
3Middle cross section of fluid channel is long-pending to change, thereby reaches the purpose of regulating nozzle 7 water yields, and its variation tendency is that when the deoxygenation water surface descended, nozzle 7 water yields increased.
The rigidity outer tube 7a of nozzle 7
2On a water inlet pipe is arranged, its inner diameter d
0Equal the internal diameter that comes water pipe that joins with water inlet pipe, rigidity outer tube 7a
2Internal diameter be 1.5d
0, place the stem stem 7b in it
2Diameter be d
0, conical pipe 7a
3And place tapered core 7b in it
3Angle of throat along water (flow) direction is 20 °.Water core 7b
4The cylindrical section of the moving core end of system, its diameter d
1Be flow and front and back pressure reduction, according to common centreless nozzle formula, the outlet internal diameter of the centreless nozzle that calculates, water core 7b according to nozzle 7
4Length L
1Be 3d
1The outlet pipe 7a of outer tube 7a end
4The x inner diameter d
2Equal 1.5d
1, its length L
2Also be 3d
1, outlet pipe 7a
4With water core 7b wherein
4Between annulus be the delivery port of nozzle 7, under differential pressure action, treat that the delivery port that deaerated water passes through nozzle 7 forms the pencil jet.
Fig. 5 has provided the cross-section structure of diffuser pipe 9, and it shrinks inlet 9a, prismatic trunnion 9b of shape, the anemostat 9c that circular cone enlarges shape by circular cone and constitutes.The angle of throat of inlet 9a is 40 °, the inner diameter d of trunnion 9b
3Equal 1.5d
1, the length L of trunnion 9b
4Equal 7d
3, the angle of flare of anemostat 9c is 8 °, the length L of anemostat 9c
5Equal 21d
3, the minimum diameter value of diffuser pipe 9 entrance sections and apart from the optimum distance of nozzle 7 outlet, with nozzle 7 to go out water flow velocity, flow and the dilatation temperature difference relevant, concrete decision by experiment.
Fig. 6 has provided the cross-section structure of deaerating heater 13, it be a contact heat exchange type treat the deaerated water heater, it is made of shell 13b of one section porous inner tube 13a cover.The import of interior pipe 13a connects from boiler next steam pipe or hot-water line 11, the mezzanine space of pipe 13a and shell 13b in steam or hot water are sprayed onto from the many apertures on the interior pipe 13a wall.A water inlet and a delivery port are arranged on the shell 13b, water inlet is introduced the deaerated water for the treatment of to be heated from circulation pipe 12, and in mezzanine space, carry out contact heat-exchanging with steam or hot water, then, the deaerated water for the treatment of that has been heated flows out through circulation pipe 14 from the delivery port of shell 13b.
Claims (6)
1. method of boiler feedwater being carried out deaeration in condenser, this method is made up of the following step: treat that deaerated water at first pressurizes by deoxygenation water pump (3), enter deaerating heater (13) heating again, make its temperature be higher than the saturation temperature of vacuum dust cather housing (1) internal pressure correspondence, enter then in the vacuum dust cather housing (1), reduce pressure by nozzle (7), dilatation, when producing flash steam, oxygen in water is also overflowed, flash steam and effusion oxygen are drained through aspiration pump (2) by the exhaust outlet on the vacuum dust cather housing (1), deaerated water is flowed out by delivery port, reaches the deoxygenation purpose, the method is characterized in that:
Treat to form when deaerated water passes through nozzle (7) the pencil jet, dilatation deoxygenation in course of injection, pour the diffuser pipe (9) that is connected on the vacuum dust cather delivery port then, the mobile kinetic energy of part changes the pressure energy into, and the deaerated water in diffuser pipe (9) exit has the net positive suction head more than 10 meters;
The deaerated water flow for the treatment of of nozzle (7) is subjected to a governor motion (8) control, and this governor motion is regulated nozzle (7) discharge according to deoxygenation water surface height, so that the deoxygenation water surface is kept certain height is constant;
The oxygen-containing steam that dilatation produces, by falling wet heat exchanger (4) cooling, wherein most of steam condenses, and remaining oxygen-containing steam is discharged to outside the vacuum dust cather by aspiration pump (2);
Fall the condensate water on wet heat exchanger (4) surface, the surface that flows to deaerating heater (5) downwards is heated, and the dissolved oxygen in the condensate water is overflowed to vapor phase space, and the flash steam that is flow through is taken away, and the deoxygenation condensate water flows into the deoxygenation water surface downwards.
2. one kind is carried out the device of deaeration in condenser to boiler feedwater, and it comprises deoxygenation water pump (3), aspiration pump (2), deaerating heater (13), boiler feed pump (10), vacuum dust cather housing (1), steam-water separator (6), it is characterized in that it also comprises:
Nozzle (7), it is positioned at vacuum dust cather housing (1), on the deoxygenation water surface, face the deaerated water outlet of vacuum dust cather housing (1) bottom, nozzle (7) is made up of outer tube (7a) and moving core (7b), moving core (7b) is among outer tube (7a), annular space between the two is the runner of water, and before nozzle (7) outlet, it is contraction-like that outer tube (7a) and moving core (7b) all are circular cone, under differential pressure action, by nozzle (7) ejection pencil jet, when being subjected to regulating action, moving core (7b) is mobile with respect to outer tube (7a), nozzle (7) inner flow passage sectional area changes, thereby changes discharge;
Governor motion (8), it is positioned at vacuum dust cather housing (1), it is made of the ball float (8a), floating ball rod (8b), intermediate connecting rod (8c), the moving core connecting rod (8d) that float on the deoxygenation water surface, when the deoxygenation water surface elevation changes, ball float (8a) produces displacement, drive floating ball rod (8b), intermediate connecting rod (8c), moving core connecting rod (8d) and moving core (7b) thus, realize conciliation nozzle (7);
Diffuser pipe (9), it is made up of inlet (9a), trunnion (9b), anemostat (9c), diffuser pipe inlet (9a) is connected in the deaerated water outlet of vacuum dust cather housing (1), and diffuser pipe inlet (9a) is relative with nozzle (7) outlet, the central lines of diffuser pipe (9) and nozzle (7);
Fall wet heat exchanger (4), it is positioned at vacuum dust cather housing (1), and it is a dividing wall type heat exchanger that occupies one section space, housing top, and its side passes to water at low temperature, and opposite side is cooled, and to fall wet be the oxygen-containing steam that dilatation produces;
Deoxygenation reheater (5), it is positioned at vacuum dust cather housing (1), in the bottom of falling wet heat exchanger (4), it is a horizontally disposed tubular heat exchanger, pass to hot water in the pipe, pipe is outer to be from falling the condensate water that wet heat exchanger (4) surface flows down, and is heated at tube outer surface, deoxygenation;
3. according to the described vacuum deoxidation of boiler water device of claim 2, it is characterized in that: the outer tube (7a) of nozzle (7) is by elastic outer pipe (7a
1), rigidity outer tube (7a
2), conical pipe (7a
3), outlet pipe (7a
4) constitute, moving core (7b) is by end cap (7b
1), stem stem (7b
2), tapered core (7b
3), water core (7b
4) constitute; When moving core (7b) is subjected to regulating action, when moving core (7b) is mobile with respect to outer tube (7a), elastic outer pipe (7a
1) length variations, make conical pipe (7a
3) and tapered core (7b
3) between long-pending variation of cross section of fluid channel; Rigidity outer tube (7a
2) on a water inlet pipe is arranged, its inner diameter d
0Equal the internal diameter that comes water pipe that joins with water inlet pipe, rigidity outer tube (7a
2) internal diameter be 1.5d
0, place the stem stem (7b in it
2) diameter equals d
0, conical pipe (7a
3) and place its interior tapered core (7b
3) be 20 °, water core (7b along the angle of throat of water (flow) direction
4) for moving the terminal cylindrical section of core (7b), its diameter d
1Be flow and front and back pressure reduction, according to common centreless nozzle formula, the inner diameter values of the centreless jet expansion that calculates, water core (7b according to nozzle (7)
4) length be 3d
1, the outlet pipe (7a that outer tube (7a) is terminal
4) inner diameter d
2Equal 1.5d
1, its length is 3d
1, outlet pipe (7a
4) and water core (7b
4) between annulus be the delivery port of nozzle (7);
4. according to the described vacuum deoxidation of boiler water device of claim 2, it is characterized in that: the ball float (8a) of governor motion (8) swims in deoxygenation water surface center; Floating ball rod (8b) is horizontally disposed with, and the one end is fixed on the ball float (8a), and the other end is connected with hinge with vacuum dust cather housing (1); Intermediate connecting rod (8c) is vertical to be provided with, and its lower end is gone up certain with floating ball rod (8b) and a bit is connected with hinge, and its upper end is connected with hinge with an end of moving core connecting rod (8d); Moving core connecting rod (8d) is horizontally disposed with the end cap (7b of its other end and moving core (7b)
1) connect with hinge, moving core connecting rod (8d) go up certain a bit be fixed in nozzle (7) outer tube (7a) on a support be connected with hinge.
5. according to the described vacuum deoxidation of boiler water device of claim 2, it is characterized in that: the inlet (9a) of diffuser pipe (9) shrinks shape for circular cone, and angle of throat is 40 °, and trunnion (9b) is the uiform section pipe, its inner diameter d
3Equal 1.5d
1, its length equals 7d
3, the angle of flare of anemostat (9c) is 8 °, its length is 21d
3, the minimum diameter value of diffuser pipe (9) entrance section and determine by experiment with the optimum distance of nozzle (7) outlet.
6. according to the described vacuum deoxidation of boiler water device of claim 2, it is characterized in that: the tubulation of deoxygenation reheater (5) is fork row structure, and transverse pipe centre-to-centre spacing is less than external diameter of pipe, and laterally tubulation has four rows at least, tubulation is made with corrosion resistant metal, perhaps the inside and outside corrosion resistant metal of electroplating of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96111468A CN1187378A (en) | 1996-10-12 | 1996-10-12 | Method and device for vacuum deoxidation of boiler water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96111468A CN1187378A (en) | 1996-10-12 | 1996-10-12 | Method and device for vacuum deoxidation of boiler water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1187378A true CN1187378A (en) | 1998-07-15 |
Family
ID=5121133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96111468A Pending CN1187378A (en) | 1996-10-12 | 1996-10-12 | Method and device for vacuum deoxidation of boiler water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1187378A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328030C (en) * | 2004-10-21 | 2007-07-25 | 济南仙峰泰山化工设备有限公司 | Continuous drainage facility in low vacuum in use for oxygen removal station of radial tyre |
| CN109052535A (en) * | 2018-09-22 | 2018-12-21 | 连云港市连云区墟沟经济发展总公司 | Without tower oxygen-eliminating device |
| CN113375147A (en) * | 2021-05-31 | 2021-09-10 | 赵艳丽 | Deoxidization head mechanism of thermal deaerator |
-
1996
- 1996-10-12 CN CN96111468A patent/CN1187378A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328030C (en) * | 2004-10-21 | 2007-07-25 | 济南仙峰泰山化工设备有限公司 | Continuous drainage facility in low vacuum in use for oxygen removal station of radial tyre |
| CN109052535A (en) * | 2018-09-22 | 2018-12-21 | 连云港市连云区墟沟经济发展总公司 | Without tower oxygen-eliminating device |
| CN113375147A (en) * | 2021-05-31 | 2021-09-10 | 赵艳丽 | Deoxidization head mechanism of thermal deaerator |
| CN113375147B (en) * | 2021-05-31 | 2022-11-04 | 鹰潭市远大气体有限公司 | Deoxidization head mechanism of thermal deaerator |
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