CN110182876A - A kind of novel spray system of low-temperature multi-effect seawater desalination device - Google Patents
A kind of novel spray system of low-temperature multi-effect seawater desalination device Download PDFInfo
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- CN110182876A CN110182876A CN201910468980.0A CN201910468980A CN110182876A CN 110182876 A CN110182876 A CN 110182876A CN 201910468980 A CN201910468980 A CN 201910468980A CN 110182876 A CN110182876 A CN 110182876A
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of novel spray system of low-temperature multi-effect seawater desalination device characterized by comprising evaporator, the cross section of the evaporator are circular cavity body structure, and the top of the evaporator connects water inlet pipe, flows through cold source in the water inlet pipe；Seawater collecting pipe is arranged in the bottom of the evaporator, and the side of the evaporator also opens up manhole；Filter device, the filter device includes filter and several pipelines and valve for being adapted to filter, the water inlet end of the filter and water outlet are respectively provided with pressure transmitter, pressure becomes the pressure difference that can monitor filter both ends, when pressure difference is greater than preset value, filter device opens self-cleaning function；Spray equipment；The top in the evaporator is arranged in spray equipment, and the spray equipment is connected with the water inlet pipe of evaporator；The problem of present invention is solved since spraying of low-temperature multi-effect seawater desalination evaporators system nozzle water distribution unevenness causes heat source, cold source contact area to reduce, and heat exchange efficiency reduces so as to cause water generation ratio reduction.
Description
Technical field
The present invention relates to a kind of spray systems, and in particular to a kind of novel spray system of low-temperature multi-effect seawater desalination device.
Background technique
Low-temperature multiple-effect seawater desalination refer to the highest evaporating temperature of former seawater in 70 DEG C of desalination technologies below, it is characterized in that
A series of evaporator series containing spray tube bank are got up, pass through repeatedly evaporation and condensation with the input of a certain amount of steam, after
The evaporating temperature of one effect is lower than previous effect, to obtain the process for being multiple times than the desalination water of quantity of steam.Low-temperature multiple-effect seawater desalination
Former seawater or concentrated seawater are evenly distributed on outside the heat-exchanging tube bundle of each evaporator by spray system by nozzle in heat exchanging process
Surface is flowed from above to below in film dress distribution, the latent heat of condensed steam in the Absorption by Sea Water heat exchanger tube of part and vaporize, it is remaining dense
Contracting seawater is driven into next effect group of evaporator by feed pump, is repeated above procedure and is realized desalination water production process.
Since the bulk of nozzle is small, arrangement quantity is more.When Particulate Inclusion, coat of paint, rust in former seawater or concentrated seawater
When the impurity substances such as slag, easily cause the spray nozzle clogging in spray system, causes water distribution uneven, cause vapour (heat source), water (cold
Source) contact area reduction, heat exchange efficiency reduces to be reduced so as to cause desalination plant water generation ratio.
Currently, carrying out cloth water test comprehensively for spray system during being only capable of stopping transport by low-temperature multiple-effect seawater desalination, mark
Remember position and the quantity of plug nozzle.Since spray tube and heat exchanger tube arrangement is intensive in low-temperature multiple-effect seawater desalination evaporator and phase
To narrow space, personnel cannot be introduced into inside evaporator and carry out disassembly cleaning individually for single or multiple nozzles, be only capable of passing through
Engineered form checks one by one after removing for the specific spray tube of specific evaporator and clears up plug nozzle.Implementation process difficulty compared with
Greatly, time-consuming, laborious, cost of labor is higher, there are larger construction safety risk and many uncontrollable factors, so using Manual machine
The effect is unsatisfactory for the method for tool cleaning.
Summary of the invention
The present invention solves the technical problem of: present invention mainly solves sprayed due to low-temperature multiple-effect seawater desalination evaporator
Leaching system nozzle water distribution unevenness causes heat source, cold source contact area to reduce, and heat exchange efficiency reduction reduces so as to cause water generation ratio
Problem.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: a kind of low-temperature multiple-effect seawater desalination dress
Set novel spray system characterized by comprising
Evaporator, the evaporator are the place that cold source and heat source exchange heat, and the cross section of the evaporator is circular chamber
Body structure, the top of the evaporator connect water inlet pipe, flow through cold source in the water inlet pipe；Sea is arranged in the bottom of the evaporator
Water collection pipe, to collect the concentrated seawater after cold source heat exchange is evaporated；The side of the evaporator also opens up manhole, to observe
Spray state and heat exchanger tube fouling condition inside evaporator；
The outside of the evaporator is arranged in filter device, the filter device, and cold source first passes through the filtering of filter device
The inside of evaporator is entered back into afterwards；The filter device can be realized filtering function and self-cleaning function；The filter device
Several pipelines and valve including filter and adaptation filter, the water inlet end of the filter and water outlet are respectively provided with pressure
Transmitter, the pressure become the pressure difference that can monitor filter both ends, and when pressure difference is greater than preset value, filter device is opened
Self-cleaning function；
Spray equipment；The spray equipment is arranged in the top in the evaporator, the spray equipment and evaporator
Water inlet pipe is connected；The evaporator water inlet pipe includes supervisor and several branch pipes, the spray equipment include several spray groups,
The evaporator water inlet pipe branch pipe is separately connected in several spray groups of spray equipment, is sprayed downwards by spray group.
Further, the spray equipment includes the first spray group, the second spray group, third spray group and the 4th spray
Group, the first spray group and the second spray group are symmetricly set on the two sides of evaporator center line, the third spray group and
Four spray groups are symmetricly set on the two sides of the first spray group and the second spray group.
Further, the spray group is formed by connecting by several spray units, and the spray unit includes spray tube and sets
Set the nozzle in spray bottom of the tube, wherein the nozzle is arranged in groups, and every group two, is connected between nozzle by communicating pipe, institute
Several nozzles connected by communicating pipe are arranged in the bottom for stating spray tube；The both ends of the spray tube are flange plate structure；Several
Spray group is connected by the ring flange at spray tube both ends between spray unit.
Further, several heat exchange groups of setting in the evaporator, the interior heat source that circulates of the heat exchange group；The heat exchange group is served as reasons
Array made of single heat exchange tube arrangement；The heat exchange group include: the first heat exchange group, the second heat exchange group, third heat exchange group and
The underface of first to fourth spray group is not arranged in for 4th heat exchange group, first to fourth described heat exchange component；Wherein, third heat exchange group
With the inclined arrangement of bottom heat exchanger tube of the 4th heat exchange group；Supporting steel frame, the supporting steel frame setting are set in the evaporator
Between adjacent heat exchange group, the heat exchanger tube array in heat exchange group is mounted on the supporting steel frame.
Further, the filter includes first filter and the second filter, and the first filter and second are filtered
Communicating pipe is arranged in the water outlet of device, setting contact electrically operated gate on the communicating pipe；The first filter and the second filter
Water inlet end connects pan feeding seawater water pump outlet pipe, and the first filter connects evaporator water inlet with the water outlet of the second filter
Pipe.
Further, the water inlet end of the first filter sets gradually the first import electrically operated gate and the first inlet pressure pick-up
Device；The water outlet of the first filter sets gradually first outlet pressure transmitter and first outlet electrically operated gate, and described first
The first sewage pipe and the first blowdown electrically operated gate is arranged in the bottom of filter；The water inlet end of second filter sets gradually second
Import electrically operated gate and the second inlet pressure transmitter；The water outlet of second filter sets gradually second outlet pressure inverting
The second sewage pipe and the second blowdown electrically operated gate is arranged in the bottom of device and second outlet electrically operated gate, second filter.
Further, inside setting filter cylinder, aperture adjustment plate and the pneumatic shut-off valve of the filter；The aperture adjustment
Sleeve-board is located at outside filter cylinder, and relatively micro sliding can occur for the aperture adjustment plate and the filter cylinder；The pneumatic shut-off valve includes
Pneumatic actuator, connecting shaft and shut-off valve valve plate, the shut-off valve valve plate are arranged in the filter cylinder, the shut-off valve valve
Plate is wafer architecture；The shut-off valve valve plate is arranged in connecting shaft, and the connecting shaft is controlled by pneumatic actuator.
Further, the filter cylinder includes side wall and bottom surface, and the side wall and bottom surface constitute the cavity body structure of filter cylinder, described
The bottom surface of filter cylinder is pyramidal structure, and the lowest part of the bottom surface connects sewage pipe；Several eyelets, the hole are opened up on the filter cylinder
Eye rule arrangement；The aperture adjustment plate is cylindrical structure, opens up perforation thereon, wherein the diameter and arrangement mode of eyelet
It is identical as filter cylinder.
Further, sacrificial anode is set on the inner wall of the filter cylinder.
Further, expansion joint is respectively set in the water inlet end of the filter device and water outlet.
The beneficial effects of the present invention are:
1, the present invention is provided with a kind of spray equipment, and spray equipment includes the first spray group, the second spray group, third spray
Group and the 4th spray group, the first spray group and the second spray group are symmetricly set on the two sides of evaporator center line, third spray
Group and the 4th spray group are symmetricly set on the two sides of the first spray group and the second spray group；Spray group arrangement mode of the invention fills
Divide the circular cavity structure being utilized inside evaporator, the first spray group and the second spray group are arranged in inside evaporator most
Eminence, while third spray group and the 4th spray group also are set in evaporator internal height lower two sides, this spray group
Arrangement mode is different from traditional only in the arrangement mode of evaporator highest point installation spray group, and evaporation is utilized to greatest extent
The shape of device, increases multiple groups spray group, and lifting means utilization rate increases production efficiency.
2, the present invention works it out heat exchange group adaptable therewith for spray equipment, several heat exchange groups of setting in evaporator,
Circulate heat source in heat exchange group；Heat exchange group is array made of being arranged as single heat exchange tube；Heat exchange group includes: the first heat exchange group,
First to fourth spray group be not arranged in just for two heat exchange groups, third heat exchange group and the 4th heat exchange group, first to fourth heat exchange component
Lower section；Supporting steel frame is set in evaporator, and supporting steel frame is arranged between adjacent heat exchange group, the heat exchanger tube array in heat exchange group
It is mounted on the supporting steel frame.Heat-exchanger rig is set in the underface of spray equipment, sprays cold source downwards in spray equipment
In the process, cold source falls downwards under the gravity of itself again, falls into the heat exchange group of underface, circulation heat in heat exchange group
Source is adequately exchanged heat with top-down cold source, promotes evaporation rate.In addition, the bottom of third heat exchange group and the 4th heat exchange group
The inclined arrangement of portion's heat exchanger tube, occupies the space in evaporator to the greatest extent, improves the utilization rate of evaporator.
3, sacrificial anode is arranged in the present invention outside filter cylinder, includes entire filter cylinder and attached metal material to protection scope
Accessory selects expendable material obviously active compared with protection metal material, delays strainer and attached metal material accessory to realize
The effect of corrosion rate.
4, pressure transmitter is arranged at the both ends of filter in the present invention, and pressure transmitter monitors filter device and imports and exports side pressure
When difference is more than setting value, alarm command is sent to control system immediately, prompt the adjustment method of operation and starts counter-flushing process；Instead
During washing, at least guarantee a filter normal use, to guarantee that spray equipment flow trim is adjusted excessively, avoids the occurrence of
The accident that two filters carry out backwash purification run simultaneously, and spray equipment is caused to stop in filter device.
5, aperture adjustable plate is set in the external of filter cylinder in the present invention, several eyelets, the eyelet rule is opened up on filter cylinder
Arrangement；Aperture adjustment plate is cylindrical structure, opens up perforation thereon, wherein the diameter and arrangement mode of eyelet are identical as filter cylinder.
When the eyelet of filter cylinder is Chong Die with the eyelet of aperture adjustment plate, the cold source circulating rate at this time in filter cylinder is most fast, when filter cylinder and hole
When the dislocation of diameter adjustable plate is adjusted, the outlet of cold source is the part that filter cylinder eyelet and aperture adjustment plate hole eye are overlapped, cold source at this time
Circulating rate becomes smaller.It can play the role of adjusting filter eyelet by this regulative mode, to meet a variety of cold sources
Filtration needs.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the novel spray system filter element group annexation figure of low-temperature multiple-effect seawater desalination of the present invention.
Fig. 2 is the structural schematic diagram of the novel spray system filter of low-temperature multiple-effect seawater desalination of the present invention.
Fig. 3 is the partial enlarged view of the novel spray system filter screen of low-temperature multiple-effect seawater desalination of the present invention.
Fig. 4 is the Section Space layout drawing of the novel spray system evaporator of low-temperature multiple-effect seawater desalination of the present invention
Fig. 5 is the partial enlarged view of low-temperature multiple-effect seawater desalination of the present invention novel spray system spray tube and nozzle.
Fig. 6 is schematic diagram when the novel spray system filter of low-temperature multiple-effect seawater desalination of the present invention is run.
Fig. 7 is the signal of first embodiment when the novel spray system filter of low-temperature multiple-effect seawater desalination of the present invention cleans
Figure.
Fig. 8 is the signal of second embodiment when the novel spray system filter of low-temperature multiple-effect seawater desalination of the present invention cleans
Figure
Wherein:
1, the first import electrically operated gate；2, the first inlet pressure transmitter；3, first outlet pressure transmitter；
4, first outlet electrically operated gate；5, automatic exhaust steam valve；6, pneumatic shut-off valve；7, filter cylinder；
8, aperture adjustment plate；9, sacrificial anode；10, the first blowdown electrically operated gate；11, electrically operated gate is got in touch with；
12, the first sewage pipe；13, shut-off valve valve plate；14, first filter；15, the second filter；
16, the second import electrically operated gate；17, second outlet electrically operated gate；18, the second blowdown electrically operated gate；19, pan feeding sea water pump；
20, the first spray group；21, the second spray group；22, third spray group；23, the 4th spray group；
24, third heat exchange group；25, the first heat exchange group；26, the second heat exchange group；27, the 4th heat exchange group；
28, supporting steel frame；29, heat exchanger tube；30, evaporator shell；31, seawater collecting pipe；32, connecting flange；
33, nozzle；
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of retouching
It states the present invention and simplifies description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " are only
For descriptive purposes, it is not understood to indicate or imply relative importance.
As shown in figures 1-8, the novel spray system of a kind of low-temperature multi-effect seawater desalination device characterized by comprising
Evaporator, the evaporator are the place that cold source and heat source exchange heat, and the cross section of the evaporator is circular chamber
Body structure, the top of the evaporator connect water inlet pipe, flow through cold source in the water inlet pipe；Sea is arranged in the bottom of the evaporator
Water collection pipe 31, to collect the concentrated seawater after cold source heat exchange is evaporated；The side of the evaporator also opens up manhole, to see
Examine 29 fouling condition of spray state and heat exchanger tube inside evaporator；
The outside of the evaporator is arranged in filter device, the filter device, and cold source first passes through the filtering of filter device
The inside of evaporator is entered back into afterwards；The filter device can be realized filtering function and self-cleaning function；The filter device
Several pipelines and valve including filter and adaptation filter, the water inlet end of the filter and water outlet are respectively provided with pressure
Transmitter, the pressure become the pressure difference that can monitor filter both ends, and when pressure difference is greater than preset value, filter device is opened
Self-cleaning function；
Spray equipment；The spray equipment is arranged in the top in the evaporator, the spray equipment and evaporator
Water inlet pipe is connected；The evaporator water inlet pipe includes supervisor and several branch pipes, the spray equipment include several spray groups,
The evaporator water inlet pipe branch pipe is separately connected in several spray groups of spray equipment, is sprayed downwards by spray group.
Spray equipment includes the first spray group 20, the second spray group 21, third spray group 22 and the 4th spray group 23, institute
It states the first spray group 20 and the second spray group 21 is symmetricly set on the two sides of evaporator center line, the third spray group 22 and
Four spray groups 23 are symmetricly set on the two sides of the first spray group 20 and the second spray group 21.
As shown in figure 5, spray group is formed by connecting by several spray units, the spray unit includes spray tube and setting
In the nozzle 33 of spray bottom of the tube, wherein the nozzle 33 is arranged in groups, and every group two, passes through communicating pipe company between nozzle 33
It connects, several nozzles 33 connected by communicating pipe are arranged in the bottom of the spray tube；The both ends of the spray tube are flange plate structure；
Spray group is connected by the ring flange at spray tube both ends between several spray units.
As shown in figure 4, several heat exchange groups of setting in evaporator, the interior heat source that circulates of the heat exchange group；The heat exchange group is served as reasons
Array made of single heat exchange tube 29 arranges；The heat exchange group includes: the first heat exchange group 25, the second heat exchange group 26, third heat exchange
The underface of first to fourth spray group is not arranged in for group 24 and the 4th heat exchange group 27, first to fourth described heat exchange component；Wherein,
The inclined arrangement of bottom heat exchanger tube 29 of third heat exchange group 24 and the 4th heat exchange group 27；Supporting steel frame is set in the evaporator
28, the supporting steel frame 28 is arranged between adjacent heat exchange group, and 29 array of heat exchanger tube in heat exchange group is mounted on the support
On steelframe 28.
As shown in Fig. 2, filter includes first filter 14 and the second filter 15, the first filter 14 and second
Communicating pipe is arranged in the water outlet of filter 15, setting contact electrically operated gate 11 on the communicating pipe；The first filter 14 and
The water inlet end of tow filtrator 15 connects 19 outlet pipe of pan feeding sea water pump, the water outlet of the first filter 14 and the second filter 15
End connection evaporator water inlet pipe.
The water inlet end of first filter 14 sets gradually the first import electrically operated gate 1 and the first inlet pressure transmitter 2；It is described
The water outlet of first filter 14 sets gradually first outlet pressure transmitter 3 and first outlet electrically operated gate 4, first filtering
The first sewage pipe 12 and the first blowdown electrically operated gate 10 is arranged in the bottom of device 14；The structure of second filter 15 and first filter 14
It is identical.The water inlet end of second filter 15 sets gradually the second import electrically operated gate 16 and the second inlet pressure transmitter；Institute
The water outlet for stating the second filter 15 sets gradually second outlet pressure transmitter and second outlet electrically operated gate 17, second mistake
The second sewage pipe and the second blowdown electrically operated gate 18 is arranged in the bottom of filter 15.
As shown in figure 3, inside setting filter cylinder 7, aperture adjustment plate 8 and the pneumatic shut-off valve 6 of filter；The aperture tune
Section plate 8 is set in outside filter cylinder 7, and with the filter cylinder 7 relatively micro sliding can occur for the aperture adjustment plate 8；The pneumatic shutdown
Valve 6 includes pneumatic actuator, connecting shaft and shut-off valve valve plate 13, and the shut-off valve valve plate 13 is arranged in the filter cylinder 7,
The shut-off valve valve plate 13 is wafer architecture；The shut-off valve valve plate 13 is arranged in connecting shaft, and the connecting shaft passes through pneumatic
Actuating mechanism controls.
The position of 7 inside side on the upper side of filter cylinder is arranged in shut-off valve valve plate 13, and when shut-off valve valve plate 13 tilts, shut-off valve is in
Opening state, cold source can enter 7 bottom of filter cylinder by shut-off valve at this time；When shut-off valve valve plate 13 is horizontally arranged, shutdown
Valve is in closed state, and cold source cannot enter 7 bottom of filter cylinder by shut-off valve at this time, can only pass through the side wall stream of 7 upside of filter cylinder
Out.
Filter cylinder 7 includes side wall and bottom surface, and the side wall and bottom surface constitute the cavity body structure of filter cylinder 7, the bottom of the filter cylinder 7
Face is pyramidal structure, and the lowest part of the bottom surface connects sewage pipe；Several eyelets, the eyelet rule are opened up on the filter cylinder 7
Arrangement；The aperture adjustment plate 8 is cylindrical structure, opens up perforation thereon, wherein the diameter and arrangement mode and filter cylinder of eyelet
7 is identical.Sacrificial anode 9 is set on the outer wall of filter cylinder 7.Expansion joint is respectively set in the water inlet end of filter device and water outlet.Effectively
Slow down pipe vibration and the heavy stress damage generated to pipeline of ground.Exhaust valve is also set up at the top of filter.
Working method:
Pressure transmitter is arranged at the both ends of filter in the present invention, and it is poor that pressure transmitter monitors filter device inlet and outlet side pressure
When more than setting value, alarm command is sent to control system immediately, prompt the adjustment method of operation and starts counter-flushing process；Backwash
In the process, at least guarantee a filter normal use, to guarantee that spray equipment flow trim is adjusted excessively, avoided the occurrence of
The accident that two filters carry out backwash purification run simultaneously, and spray equipment is caused to stop in filter device.
The method of operation of filter includes the following three types:
Embodiment one:
As shown in fig. 6, closing the contact electrically operated gate 11 between first filter 14 and the second filter 15, first filter
14 and second filter 15 run simultaneously.Cold source respectively enters the entrance of first filter 14 and the second filter 15, from first
It flows out the outlet of filter 14 and the second filter 15.Such mode first filter 14 and the second filter 15 are run simultaneously.
Embodiment two:
As shown in fig. 7, opening the contact electrically operated gate 11 between first filter 14 and the second filter 15, the second mistake is closed
The the second import electrically operated gate 16 and second outlet electrically operated gate 17 of filter 15 open the second blowdown electrically operated gate 18.First filtering at this time
Device 14 operates normally, while first filter 14 is that the second filter 15 provides cleaning water source for cleaning.Water source is cleaned to pass through
Electrically operated gate 11 is got in touch with, is entered from 15 water outlet of the second filter, backwash is carried out by entering on the inside of filter cylinder 7 on the outside of filter cylinder 7, washes away filter
The impurity that 7 inside of cylinder is deposited, backwash sewage are discharged from the second sewage pipe of 7 bottom of filter cylinder.Such mode is set for sea water desalination
The standby lower situation of load, first filter 14 is in working condition at this time, and the second filter 15 is in cleaning state.
Embodiment three:
If sea water desalting equipment load is higher, but when filter needs to clean again simultaneously, using this kind of cleaning way: such as
Shown in Fig. 8, first filter 14 is in working condition at this time, and the second filter 15 is in internal washing state, closes first filter
14 and the second contact electrically operated gate 11 between filter 15；The pneumatic shut-off valve 6 for closing the second filter 15, makes shut-off valve valve plate
13 be in closed state；Open the second blowdown electrically operated gate 18；At this time in the second filter 15, side wall of the cold source from 7 upside of filter cylinder
Outflow, the gap between 7 outside of filter cylinder and filter housing, then flowed on the outside of filter cylinder 7, to the second pneumatic shut-off valve 6
Lower part filter cylinder 7 carries out backwash, and backwash sewage is discharged from the second sewage pipe of 7 bottom of filter cylinder, crosses drainage from water outlet and enters steaming
It sends out inside device.
It should be strongly noted that above-described embodiment, which uses for two filters, illustrates technology effect of the invention
Fruit then at least guarantees that a filter is in running order, to guarantee spray equipment flow trim according to more filters
It adjusts excessively, avoids the occurrence of two filters in filter device while carrying out backwash purification run, and cause spray equipment disconnected
The accident of stream.
Above three groups of embodiments may be used singly or in combin.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of novel spray system of low-temperature multi-effect seawater desalination device characterized by comprising
Evaporator, the evaporator are the place that cold source and heat source exchange heat, and the cross section of the evaporator is circular cavity knot
Structure, the top of the evaporator connect water inlet pipe, flow through cold source in the water inlet pipe；The bottom setting seawater of the evaporator is received
Collector, to collect the concentrated seawater after cold source heat exchange is evaporated；The side of the evaporator also opens up manhole, to observe evaporation
Spray state and heat exchanger tube fouling condition inside device；
Filter device, the filter device are arranged in the outside of the evaporator, and cold source first passes through after the filtering of filter device again
Into the inside of evaporator；The filter device can be realized filtering function and self-cleaning function；The filter device includes
Filter and several pipelines and valve for being adapted to filter, the water inlet end of the filter and water outlet are respectively provided with pressure inverting
Device, the pressure become the pressure difference that can monitor filter both ends, and when pressure difference is greater than preset value, filter device is opened from clear
Wash function；
Spray equipment；The top in the evaporator, the water inlet of the spray equipment and evaporator is arranged in the spray equipment
Pipe is connected；The evaporator water inlet pipe includes supervisor and several branch pipes, and the spray equipment includes several spray groups, described
Evaporator water inlet pipe branch pipe is separately connected in several spray groups of spray equipment, is sprayed downwards by spray group.
2. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: the spray
Shower device includes the first spray group, the second spray group, third spray group and the 4th spray group, the first spray group and second
Spray group is symmetricly set on the two sides of evaporator center line, and the third spray group and the 4th spray group are symmetricly set on described
The two sides of one spray group and the second spray group.
3. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: the spray
Leaching group is formed by connecting by several spray units, the spray unit include spray tube and be arranged in spray bottom of the tube nozzle,
Wherein, the nozzle is arranged in groups, and every group two, is connected between nozzle by communicating pipe, if the bottom of the spray tube is arranged
The dry nozzle connected by communicating pipe；The both ends of the spray tube are flange plate structure；Pass through spray between several spray units
The ring flange at pipe both ends connects into spray group.
4. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: the steaming
Several heat exchange groups of setting in device are sent out, circulate heat source in the heat exchange group；The heat exchange group is made of being arranged as single heat exchange tube
Array；The heat exchange group includes: the first heat exchange group, the second heat exchange group, third heat exchange group and the 4th heat exchange group, described first to
The underface of first to fourth spray group is not arranged in for four heat exchange components；Wherein, the bottom of third heat exchange group and the 4th heat exchange group is changed
The inclined arrangement of heat pipe；Supporting steel frame is set in the evaporator, and the supporting steel frame is arranged between adjacent heat exchange group, changes
Heat exchanger tube array in hot group is mounted on the supporting steel frame.
5. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: the mistake
Filter includes first filter and the second filter, and communicating pipe is arranged in the water outlet of the first filter and the second filter,
Setting contact electrically operated gate on the communicating pipe；The first filter connects pan feeding seawater with the water inlet end of the second filter and pumps out
Water pipe, the first filter connect evaporator water inlet pipe with the water outlet of the second filter.
6. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: described the
The water inlet end of one filter sets gradually the first import electrically operated gate and the first inlet pressure transmitter；The first filter goes out
Water end (W.E.) sets gradually first outlet pressure transmitter and first outlet electrically operated gate, and first row is arranged in the bottom of the first filter
Dirt pipe and the first blowdown electrically operated gate；The water inlet end of second filter sets gradually the second import electrically operated gate and the second inlet-pressure
Power transmitter；The water outlet of second filter sets gradually second outlet pressure transmitter and second outlet electrically operated gate, institute
The second sewage pipe and the second blowdown electrically operated gate is arranged in the bottom for stating the second filter.
7. a kind of novel spray system of low-temperature multi-effect seawater desalination device as claimed in claim 5, it is characterised in that: the mistake
Inside setting filter cylinder, aperture adjustment plate and the pneumatic shut-off valve of filter；The aperture adjustment sleeve-board is located at outside filter cylinder, the hole
Relatively micro sliding can occur for diameter adjustable plate and the filter cylinder；The pneumatic shut-off valve include pneumatic actuator, connecting shaft with
And shut-off valve valve plate, the shut-off valve valve plate are arranged in the filter cylinder, the shut-off valve valve plate is wafer architecture；The shutdown
Valve valve plate is arranged in connecting shaft, and the connecting shaft is controlled by pneumatic actuator.
8. a kind of novel spray system of low-temperature multi-effect seawater desalination device as claimed in claim 7, it is characterised in that: the filter
Cylinder includes side wall and bottom surface, and the side wall and bottom surface constitute the cavity body structure of filter cylinder, and the bottom surface of the filter cylinder is pyramidal structure,
The lowest part of the bottom surface connects sewage pipe；Several eyelets, the eyelet rule arrangement are opened up on the filter cylinder；The aperture tune
Section plate is cylindrical structure, opens up perforation thereon, wherein the diameter and arrangement mode of eyelet are identical as filter cylinder.
9. a kind of novel spray system of low-temperature multi-effect seawater desalination device as claimed in claim 8, it is characterised in that: the filter
Sacrificial anode is set on the outer wall of cylinder.
10. a kind of novel spray system of low-temperature multi-effect seawater desalination device as described in claim 1, it is characterised in that: described
Expansion joint is respectively set in the water inlet end of filter device and water outlet.
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| CN201910468980.0A CN110182876B (en) | 2019-05-31 | 2019-05-31 | Operation method of spraying system of low-temperature multi-effect seawater desalination device |
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| CN110182876B CN110182876B (en) | 2024-06-11 |
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| CN111439874A (en) * | 2020-03-24 | 2020-07-24 | 天津国投津能发电有限公司 | Aluminum heat exchange tube type seawater desalination system pre-filtering device and cleaning method |
| CN111499065A (en) * | 2020-04-16 | 2020-08-07 | 天津国投津能发电有限公司 | Novel feeding system of low-temperature multi-effect seawater desalination device |
| CN113018959A (en) * | 2021-03-26 | 2021-06-25 | 天津国投津能发电有限公司 | Automatic backwashing filter device and backwashing method of low-temperature multi-effect seawater desalination system |
| CN114322626A (en) * | 2021-12-02 | 2022-04-12 | 中国船舶重工集团公司第七0四研究所 | Marine heat exchange system capable of filtering seawater in two directions |
| CN114804268A (en) * | 2022-06-28 | 2022-07-29 | 天津国投津能发电有限公司 | Automatic waste heat adjusting and recycling device and method for low-temperature multi-effect distillation seawater desalination system |
| CN117164041A (en) * | 2023-10-31 | 2023-12-05 | 江苏汉盛海洋装备技术有限公司 | A kind of high-power seawater desalination equipment for ships |
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| CN114804268A (en) * | 2022-06-28 | 2022-07-29 | 天津国投津能发电有限公司 | Automatic waste heat adjusting and recycling device and method for low-temperature multi-effect distillation seawater desalination system |
| CN114804268B (en) * | 2022-06-28 | 2022-09-09 | 天津国投津能发电有限公司 | Automatic waste heat adjusting and recycling device and method for low-temperature multi-effect distillation seawater desalination system |
| CN117164041A (en) * | 2023-10-31 | 2023-12-05 | 江苏汉盛海洋装备技术有限公司 | A kind of high-power seawater desalination equipment for ships |
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