CN105813982B - The water cleaning systems of washer - Google Patents

The water cleaning systems of washer Download PDF

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Publication number
CN105813982B
CN105813982B CN201480067739.2A CN201480067739A CN105813982B CN 105813982 B CN105813982 B CN 105813982B CN 201480067739 A CN201480067739 A CN 201480067739A CN 105813982 B CN105813982 B CN 105813982B
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CN
China
Prior art keywords
washings
water
cleaning systems
storage case
washer
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Application number
CN201480067739.2A
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Chinese (zh)
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CN105813982A (en
Inventor
西山蓝
印藤尚子
长町健治
兼田繁
兼田繁一
东田正宪
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Kawasaki Motors Ltd
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Kawasaki Jukogyo KK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042—Baffles or guide plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0096—Safety mechanisms specially adapted for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C02F1/385—Treatment of water, waste water, or sewage by centrifugal separation by centrifuging suspensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/04—Regenerating the washing fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
    • B01D2247/106—Means for removing the washing fluid dispersed in the gas or vapours using a structured demister, e.g. tortuous channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
    • B01D2247/107—Means for removing the washing fluid dispersed in the gas or vapours using an unstructured demister, e.g. a wire mesh demister
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/01—Engine exhaust gases
    • B01D2258/012—Diesel engines and lean burn gasoline engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/45—Gas separation or purification devices adapted for specific applications
    • B01D2259/4566—Gas separation or purification devices adapted for specific applications for use in transportation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/96—Regeneration, reactivation or recycling of reactants
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • 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
    • C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/005—Processes using a programmable logic controller [PLC]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Centrifugal Separators (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Safety Devices In Control Systems (AREA)
  • Physical Water Treatments (AREA)

Abstract

According to the water cleaning systems of the present invention（100）It is by washer（101）In the water cleaning systems that are purified of used washings, as defined in occur during unfavorable condition, in the water cleaning systems（100）Inside enter to exercise the reflow treatment that washings are back to upstream side.According to said structure, the supply to the washings at regulation can be stopped and repair is carried out in the meantime, and water cleaning systems can be recovered after unfavorable condition is corrected rapidly（100）.

Description

The water cleaning systems of washer
Technical field
The present invention relates to the water cleaning systems purified for used washings in the washer to washing exhaust.
Background technology
It is used as the nitrogen oxides contained in the exhaust for reducing engine（NOX）Technology, with making exhaust gas recirculation to starting Machine and reduce oxygen concentration, suppress ignition temperature EGR（Exhaust Gas Recirculation；Exhaust gas recirculatioon）.Ship Heavy oil is contained into the SPM such as carbon black as a large amount of in fuel, therefore exhaust with Diesel engine（Suspended Particulate Matter；Suspended particulate substance）.Therefore, it is necessary to contain in exhaust is removed when performing EGR in marine diesel engine Engine is back to after SPM.As the device that SPM is removed from exhaust, with by washing the washer that water washing is vented.
Used washings largely contain flue dust in the washers（The solid particles such as black smoke）Deng, therefore generally Certain water standard is unsatisfactory for, it is impossible to be directly discharged to outside ship, also, can not recycle in the washers.Therefore, in order to Washings are made to be emitted into ship outer or recycle, it is necessary to net to the degree for meeting certain water standard by Water warfare is washed Water system.
Washer is generally linked with water cleaning systems with washer.Therefore, even if there is slight unfavorable condition to also result in only Water system stop, washer can not normal work, the result is that have to stopping EGR situation.In order to prevent the situation, Consideration sets multiple purified treatment pipelines in water cleaning systems（With reference to patent document 1 and patent document 2）.
Prior art literature：
Patent document：
Patent document 1：Japanese Patent Publication No. 3868352；
Patent document 2：Japanese Unexamined Patent Publication 2008-123463 publications.
The content of the invention
Problems to be solved by the invention：
However, in order to set multiple purified treatment pipelines, therefore, to assure that broad setting place, but have in setting place It there may come a time when to realize in the ship of limit.The present invention be in view of so the reason for and formed, even if the purpose is to provide purification In the case of handling pipeline only one of which, if slight unfavorable condition can also avoid the cleaning system of EGR stopping.
The means solved the problems, such as：
According to the present invention a kind of form water cleaning systems be by used washings in washer purified it is net Water system, as defined in occur during unfavorable condition, enters to exercise washings in the water cleaning systems and is back at the backflow of upstream side Reason.According to said structure, the supply to the washings at regulation can be stopped and repair is carried out in the meantime, and not Good situation can recover water cleaning systems rapidly after being corrected.Therefore, if slight unfavorable condition, i.e. repair when do not spend Time taking unfavorable condition, then can avoid EGR stopping.
Again or in above-mentioned water cleaning systems, possess：Regulation is taken out from the amount of the washings of washer extraction Take regulating valve；With the storage case of the temporary transient washings for accommodating and being extracted from the washer；It is described when carrying out the reflow treatment The control for extracting regulating valve switches to the water level for making the washer to protect from the control for making the water level holding of the storage case certain Hold certain control.According to said structure, it is in preferentially because the water level for making washer keeps certain, therefore washer can be made Continuous firing.
Again or in above-mentioned water cleaning systems, it is also equipped with the centrifugal separator from washings segregating foreign objects；Described time Stream process includes making storage case described in washings from the nearby direction of the centrifugal separator when the centrifugal separator stops The processing of backflow.According to said structure, the supply of the washings to centrifugal separator can be stopped, and can be in unfavorable condition It is rapid after being corrected to recover water cleaning systems.
And or in above-mentioned water cleaning systems, the washings that the reflow treatment is included in purified treatment are discontented with The washings are made to be back to the processing of the storage case as defined in foot during water standard.According to said structure, it can stop to ship The supply of the washings of outer or washer, and water cleaning systems can be recovered rapidly after unfavorable condition is corrected.
Again or in above-mentioned water cleaning systems, it is also equipped with：, close to the position in downstream, have positioned at than the storage case There is the inclined plane that defined angle is formed relative to horizontal direction, foreign matter is deposited in the inclined plane different from washings separation with this The tube settler of thing；With positioned at than the tube settler close to the position in downstream, by centrifuging treatment from washing moisture The centrifugal separator of divorced thing.According to said structure, storage case is located at the upstream of tube settler, therefore can suppress heavy to inclined tube The inflow velocity of the washings in shallow lake pond, the foreign matter that can efficiently carry out in tube settler is removed.
Again or in above-mentioned water cleaning systems, when the water level of the storage case reaches capacity water level or more than pole When the state of position of restricting water supply continue for the stipulated time, the reflow treatment is terminated.When the water level of storage case reaches capacity water level or When the state of water level of overstepping the extreme limit continue for the stipulated time, preferably think occurred serious unfavorable condition and stopped EGR.Reflow treatment is not needed in the case where EGR stops, therefore now avoids unnecessary control by terminating reflow treatment System.
Invention effect：
According to above-mentioned water cleaning systems, even if in the case of having a purified treatment pipeline, if slight unfavorable condition Also EGR stopping can be avoided.
Brief description of the drawings
Fig. 1 is the block diagram of the water cleaning systems according to embodiment；
Fig. 2 is the general profile chart of the washer shown in Fig. 1；
Fig. 3 is the general profile chart of the tube settler shown in Fig. 1；
Fig. 4 is the general profile chart of the centrifugal separator shown in Fig. 1；
Fig. 5 is the block diagram of the control system of the water cleaning systems according to embodiment.
Embodiment
The overall structure ＞ of ＜ water cleaning systems
First, the overall structure of the water cleaning systems 100 according to this embodiment is illustrated.Fig. 1 is the frame of water cleaning systems 100 Figure.The purified treatment to the used washings of washer 101 is carried out in water cleaning systems 100.
Herein, before explanation water cleaning systems 100, the structure of washer 101 is illustrated.Fig. 2 is the outline of washer 101 Sectional view.The washer 101 of this embodiment is the one that washing section 102, cooling end 103 and water storing unit 104 are integrally formed Type washer.The washings drawn from water storing unit 104 by pump 105 are ejected from the nozzle 106 being configured in washing section 102. When exhaust passes through washing section 102, SPM in the washings trapping exhaust of the injection etc..Afterwards, the washings of injection are because of deadweight And fall, accumulate in water storing unit 104.In addition, washer 101 is provided with the water level for determining washings in water storing unit 104（Below Referred to as " water level "）Washer water-level gauge 107.
Exhaust, which passes through, flows into cooling end 103 after washing section 102.The exhaust for flowing into cooling end 103 is cold by heat exchanger 108 But, substantial amounts of condensed water is produced.In addition, the demister in the downstream by being arranged at heat exchanger 108, vaporific in trapping exhaust The washings of change.The condensed water produced in heat exchanger 108 and the washings trapped by demister 109 fall because of deadweight, Accumulate in water storing unit 104.In addition, the moisture being just contained in originally in exhaust also becomes condensed water and is directed into washings.
Then, the structure of water cleaning systems 100 is illustrated.As shown in figure 1, water cleaning systems 100 possess extraction from upstream side successively Regulating valve 10, raw water storage case 11, supply pump 12, tube settler 13, the first return valve 14, centrifugal separator 15, place Manage water storage case 16, loopback pump 17, stop valve 18, the return valve 20 of loopback regulating valve 19 and second.Hereinafter, them are illustrated successively Each inscape.
Extract the valve that regulating valve 10 is the extraction amount for the washings that regulation is extracted from washer 101.In water cleaning systems 100 Circulation pipe arrangement 21 is provided with, the circulation pipe arrangement 21 is formed is recycled to washer 101 by the washings extracted from washer 101 Stream.Extract regulating valve 10 and be located at the entrance of the circulation pipe arrangement 21 and compared with raw water storage case 11 close to upstream Position.
Raw water storage case 11 is the storage tank of the temporary transient washings for accommodating and being extracted from washer 101, and positioned at than extracting Position of the regulating valve 10 close to downstream.Very high pressure is in because flowing into exhaust inside washer 101, in contrast, not The inside of water storage case 11 is handled in the pressure close to atmospheric pressure.By the pressure differential of both, the washings in washer 101 It is transported to raw water storage case 11.Also, raw water storage case 11 is provided with the raw water for the water level for determining washings Storage case water-level gauge 22.In addition, when washings receive the spilling of case 11 from the untreated water capacity, the washings of spilling, which are contained in, to be arranged on Another storage tank of hull（It is not shown）.
Supply pump 12 be used for from the untreated water capacity receive case 11 to tube settler 13 and centrifugal separator 15 supply wash The pump of water is washed, and positioned at the position compared with raw water storage case 11 close to downstream.The inside of supply pump 12 is mixed into air It is the reason for causing failure, and raw water storage case 11 is being configured with close to the upstream of supply pump 12, therefore supply pump 12 is interior Portion maintains the state full of washings.
Tube settler 13 is the device that purified treatment portion 23 is constituted together with centrifugal separator 15, and positioned at than supply Position of the pump 12 close to downstream.Fig. 3 is the general profile chart of tube settler 13.As shown in figure 3, tube settler 13 full of The tank 24 of washings is internally provided with multiple inclined tubes 25, its horizontal direction rectangular cross-section of the inclined tube 25 and with defined Angle（Such as 60 degree）Tilt.The washings for flowing into tank 24 are flowed to behind bottom surface as shown by arrows in Figure 3, in inclined tube 25 under Flow upwards out and discharge.When washings are by inclined tube 25, the foreign matter inside washings（Flue dust）In the inclined plane 26 of inclined tube 25 Upper precipitation.When flue dust is precipitated in the inclined plane 26 of such inclined tube 25, flue dust distance to be moved untill precipitation It is shorter, therefore, it is possible to be rapidly completed precipitation.In addition, raw water storage case 11 is located at the upstream of tube settler 13, therefore energy Enough inflow velocities for suppressing the washings to tube settler 13, the foreign matter that can efficiently carry out in tube settler 13 is gone Remove.
First return valve 14 is will not flow to washings close to the front of centrifugal separator 15 to centrifugal separator 15 and not The valve of the distribution of water storage case 11 is handled, and is located at the position than tube settler 13 close to downstream.First return valve 14 is institute The triple valve of meaning, is connected with the first backflow pipe arrangement 27 extended towards raw water storage case 11.
Centrifugal separator 15 is the device that purified treatment portion 23 is constituted together with tube settler 13, positioned at than the first backflow Position of the valve 14 close to downstream.Fig. 4 is the general profile chart of centrifugal separator 15.As shown in figure 4, centrifugal separator 15 is being accommodated There is the central siphon 29 and multiple swivel plates 30 of rotation at a high speed in container 28.Each swivel plate 30 has umbrella（It is coniform）Shape Shape, is formed with the multiple openings 31 being arranged at equal intervals in the circumferential direction.The washings for flowing into centrifugal separator 15 lead to successively Cross the opening 31 of the inside of central siphon 29 and each swivel plate 30.Moreover, when washings are by swivel plate 30, heavy flue dust （Foreign matter）Dispersed by centrifugal force to the side wall for accommodating container 28.Like this, centrifugal separator 15 can be by centrifugation at Manage from washings segregating foreign objects.In addition, it is necessary to make the inside of centrifugal separator 15 be full of washings all the time.
Processing water storage case 16 is the storage tank for temporarily storing the washings by the purified treatment of purified treatment portion 23, positioned at than from Position of the centrifugal separator 15 close to downstream.Processing water storage case 16 is provided with the processing water for the water level for determining processing water storage case 16 The water quality analyser 33 of the water quality of storage case water-level gauge 32 and measure washings.Water quality analyser 33 can determine the pH value of washings, turbidity, Oil.In addition, water quality analyser 33 can also be arranged at discharge pipe arrangement 35 described later.
Loopback pump 17 be by the washings of purified treatment to the loopback of washer 101 or the pump overboard supplied, positioned at than Handle position of the water storage case 16 close to downstream.Identically with above-mentioned supply pump 12, it is to cause that inside is mixed into air to loopback pump 17 The reason for failure, and it is configured with processing water storage case 16, therefore the inside dimension of loopback pump 17 in the upstream end close to loopback pump 17 Hold the state full of washings.
Stop valve 18 be prevent washings circulation valve, positioned at than loopback pump 17 close to downstream position.In stop valve The backflow pipe arrangement 34 of the oriented extension of processing water storage case 16 is set between 18 and loopback pump 17.By means of this, even in loopback pump Stop valve 18 is closed in the state of 17 drivings, because the washings discharged from loopback pump 17 are back to processing water storage case 16, because This also can prevent the outlet pressure of loopback pump 17 from excessively rising.
Loopback regulating valve 19 is valve of the regulation to the amount of the washings of the loopback of washer 101, positioned at more close than stop valve 18 The position in downstream.Loopback regulating valve 19 is triple valve, is connected with the discharge pipe arrangement 35 overboard extended.By means of this, loopback is adjusted Section valve 19 can distribute the washings for having carried out purified treatment to washer 101 and discharge pipe arrangement 35.
Second return valve 20 is disposed on discharging the valve of pipe arrangement 35.Second return valve 20 is triple valve, and connection is oriented not to be located Manage the second backflow pipe arrangement 36 of the extension of water storage case 11.By means of this, it will can pass through the washing moisture of loopback regulating valve 19 It is assigned to outboard and raw water storage case 11.
Above is according to the general structure of the water cleaning systems 100 of this embodiment.As described above, according to this embodiment Water cleaning systems 100, due to 15 each ground arranged in series of tube settler 13 and centrifugal separator, therefore are as a purification The system for handling pipeline.In addition, the present invention is highly effective for the water cleaning systems with a carrying out washing treatment pipeline, but also may be used Suitable for the water cleaning systems with multiple carrying out washing treatment pipelines.
The structure ＞ of ＜ control systems
Then, the structure of the control system of water cleaning systems 100 according to this embodiment is illustrated.Fig. 5 is to show this implementation The block diagram of the structure of the control system of form.Water cleaning systems 100 possess the control device 40 being made up of CPU, ROM, RAM etc..Control Device 40 processed and washer water-level gauge 107, raw water storage case water-level gauge 22, processing water storage case water-level gauge 32 and water quality Meter 33 is electrically connected, and water level, raw water based on the measure signal acquisition sent from these instruments about washer 101 The information of the water quality of washings after water level, the water level of processing water storage case 16 and the purified treatment of storage case 11.
Also, control device 40 is electrically connected with centrifugal separator 15, supply pump 12 and loopback pump 17.These devices have The function of OBD is carried out to the unfavorable condition occurred, when being judged as that unfavorable condition has occurred, unfavorable condition letter is sent Number（Slight unfavorable condition signal and serious unfavorable condition signal）.Control device 40 is based on the bad feelings sent from these devices The unfavorable condition information of each device of condition signal acquisition, and send the various controls of control signal execution to these devices.Also, centrifugation Seperator 15 is electrically connected with the first return valve 14, and is sent control signal to the first return valve 14 and performed opening and closing control System.
In addition, control device 40 is with extracting regulating valve 10, stop valve 18, the electricity of 19 and second return valve of loopback regulating valve 20 Connect gas, and control signal is sent to these valves, so as to control opening and closing or the aperture of these valves.Also, control device 40 is also The EGR control device 110 of execution and stopping with controlling EGR is electrically connected, and is also sent not to EGR control device 110 Good situation signal（Slight unfavorable condition signal and serious unfavorable condition signal）.
Control ＞ when ＜ is generally run
Then, the control of the water cleaning systems 100 when illustrating generally to run.First, control device 40 is so that from raw water Storage case 11 is to purified treatment portion 23（Tube settler 13 and centrifugal separator 15）The amount of the washings of supply keeps certain The rotating speed of form control supply pump 12 etc..Moreover, so that the water level of raw water storage case 11 keeps certain form control Extract the aperture of regulating valve 10.That is, regulating valve 10 will be extracted to extract with supply pump 12 to purified treatment portion 23 from washer 101 The form control of the washings of the washings identical amount of supply.By means of this, it can prevent washings from being received from the untreated water capacity Case 11 overflows or suction air of supply pump 12 etc. because of washings reduction.
Also, centrifugal separator 15 is so that the form that washings are flowed into from tube settler 13 to centrifugal separator 15（With court The form that the side of centrifugal separator 15 is opened）Control the opening direction of the first return valve 14.In addition, to loopback pump 17, not performing and turning The control of speed etc., and service condition as defined in being maintained once working.In addition, control device 40 is with processing water storage case 16 The form control that water level is closed when opening when exceeding defined discharge reference position and be less than defined lower position after opening Stop valve 18.Generally, stop valve 18 maintains the state once opening.
Control device 40 is so that the water level of washer 101 keeps certain form control loopback regulating valve 19.Specifically, Loopback regulating valve 19 distributes washings to washer 101 when the water level of washer 101 is less than setting（Towards washer 101 Open side）, washings are distributed to discharge pipe arrangement 35 when in addition（Opened towards discharge pipe arrangement 35 side）.Also, control device 40 So as to pass through the washings overboard direction flowing of loopback regulating valve 19（Opened towards outboard side）Form control second flow back Valve 20.
As described above, the moisture contained in exhaust becomes to add after condensed water into the washings in washer 101.At this In embodiment, it will be extracted than the washy washings added to the exhaust of the washings from washer 101.Therefore, control Device 40 is in order that the water level of washer 101 keeps certain, and by the washings after being purified in water cleaning systems 100 to washer It is more than 101 supply ormal weights.
The ＞ of control 1 during the slight unfavorable conditions of ＜
Then, control during slight unfavorable condition is illustrated.Although slightly bad refer to need repair, can be pre- See the unfavorable condition for completing the repair in a short time.First, in the control in slight unfavorable condition, illustrate and centrifugation Control during the slight unfavorable condition of the correlation of seperator 15.The unfavorable condition related to centrifugal separator 15 is included to centrifugation The quantity delivered of the washings of machine 15 it is low etc..
When centrifugal separator 15 is judged as there occurs slight unfavorable condition by OBD, stop purified treatment simultaneously for the time being Slight unfavorable condition signal is sent to control device 40.At the same time, centrifugal separator 15 performs reflow treatment.Specifically, Centrifugal separator 15, which is performed, opens the first return valve 14 towards the side of raw water storage case 11, makes what is flowed out from tube settler 13 Washings are back to the processing of raw water storage case 11 from the nearby side of centrifugal separator 15.By means of this, washings are temporary transient Centrifugal separator 15 is cannot flow into, so that in the meantime repair can be carried out to centrifugal separator 15.In addition, control device 40 During the slight unfavorable condition signal that reception is sent from centrifugal separator 15, alarm is sent.By means of this, operator recognizes centrifugation The generation of slight unfavorable condition in seperator 15, and the repair of machine 15 is centrifuged.
At the same time, control device 40 will extract the control of regulating valve 10 from keeping the water level of raw water storage case 11 Certain control switches to the water level for making washer 101 to keep certain control.By the first return valve 14 towards the untreated water capacity Receive the side of case 11 open and cleaning solution to raw water storage case 11 flow back when, if with generally run when identical mode control Regulating valve 10 is extracted, then extracting regulating valve 10 can not be opened.Consequently, it is possible to because of the moisture contained in exhaust washer 101 Interior washings gradually increase, it may occur however that the situation that washer 101 can not normally be run.On the other hand, as described above, If so that the water level of washer 101 keeps the control of certain form switching extraction regulating valve 10, washer 101 can enter The normal operation of row, as a result, EGR stopping can be avoided.
The ＞ of control 2 during the slight unfavorable conditions of ＜
Then, in control when illustrating slight unfavorable condition, the washings of purified treatment are unsatisfactory for defined water quality mark Punctual control.In this case, if being, for example, attachment of the pollutant to water quality analyser 33 the reason for slight unfavorable condition, scrape The pollutant is gone just to recover.First, control device 40 is based at the measure signal acquisition purification that water quality analyser 33 is sent The water quality information of the washings of reason, and determine whether to meet certain water standard.Control device 40 is determined as at purification When the washings of reason are unsatisfactory for certain water standard, reflow treatment is performed.Specifically, control device 40 is performed second time Flow valve 20 to open towards the side of raw water storage case 11, so that having carried out the washings of purified treatment from the second backflow pipe arrangement 36 times It flow to the processing of raw water storage case 11.By means of this, washings can not temporarily be emitted into outboard, therefore in the meantime can Repair as defined in carrying out.
At the same time, control device 40 will extract the control of regulating valve 10 from keeping the water level of raw water storage case 11 Certain control switches to the water level for making washer 101 to keep certain control.As described above, extracting regulating valve 10 by switching Control, can normally be run with this washer 101, EGR stopping can be avoided.
In addition, the situation for making washings be back to raw water storage case 11 in each reflow treatment is explained above, but simultaneously It is nonessential to be back to raw water storage case 11.For example, it is also possible to make washings be back to raw water storage case 11 and supply Between pump 12.
Control ＞ during the serious unfavorable conditions of ＜
Then control during serious unfavorable condition is illustrated.Serious unfavorable condition refers to it is contemplated that in a short time can not be complete Into the unfavorable condition of repair.Control device 40 based on from the untreated water capacity receive case water-level gauge 22 transmission measure signal sentence The water level for raw water storage case 11 that breaks reach capacity water level when or the state of the water level that oversteps the extreme limit when continue for the stipulated time, Perform control during serious unfavorable condition.Above-mentioned limiting water level includes flood level.
In addition, the moisture contained in exhaust is added into the washings in washer 101, so if in reflow treatment Performing makes the water level of washer 101 keep certain control, then the water level of the washings in raw water storage case 11 gradually on Rise.Therefore, the time is spent in repair and during long lasting for reflow treatment, the water level that there is raw water storage case 11 reaches To the situation of limiting water level.In this case, slight unfavorable condition originally becomes serious unfavorable condition.
Also, when occurring the damaged of centrifugal separator 15, the damaged of supply pump 12, the breakage of loopback pump 17, based on self The result of diagnosis sends serious unfavorable condition signal from each equipment to control device 40.Control device 40 is serious bad when receiving this Control during serious unfavorable condition is performed during situation signal.In addition, the damaged method of each equipment is judged as control device 40, Be not limited to from each equipment receive serious unfavorable condition signal when, and can also be that control device 40 connects from peripheral equipment (not shown) Receive and determine signal and based on the breakage of each equipment of measure signal determining.
In control in serious unfavorable condition, control device 40 stops reflow treatment in the case where carrying out reflow treatment Or stop it.Then, supply pump 12 and loopback pump 17 are stopped, sending serious unfavorable condition to EGR control device 110 believes Number.EGR control device 110 stops EGR pressure fan (not shown) and closed to be arranged at when receiving serious unfavorable condition signal The valve of EGR flow path is so as to terminate EGR.
Above is according to the explanation of the water cleaning systems 100 of this embodiment.Like this, according to the water purification system of this embodiment System 100, even if in the case of only one of which purified treatment pipeline, as long as slight unfavorable condition can also avoid EGR's Stop.
Industrial applicability：Even if according to the water cleaning systems of the present invention in the case of only one of which purified treatment pipeline, only If slight unfavorable condition can also avoid EGR stopping.Therefore, it is useful in the technical field of the water cleaning systems of washer.
Symbol description：
10 extract regulating valve；
11 raw water storage cases（Storage case）；
13 tube settlers；
26 inclined planes；
15 centrifugal separators；
100 water cleaning systems；
101 washers.

Claims (6)

1. a kind of water cleaning systems,
Be by the water cleaning systems that used washings are purified in washer,
Possess：
Adjust the extraction regulating valve of the amount of the washings extracted from the washer；With
Temporarily accommodate the storage case of the washings extracted from the washer；
When occurring defined unfavorable condition, enter to exercise the reflow treatment that washings are back to upstream side in the water cleaning systems,
When carrying out the reflow treatment, the control of the extraction regulating valve keeps certain control from making the water level of the storage case System switches to the water level for making the washer to keep certain control.
2. water cleaning systems according to claim 1, it is characterised in that
It is also equipped with the centrifugal separator from washings segregating foreign objects by centrifuging treatment；
The reflow treatment includes making nearby direction of the washings from the centrifugal separator when the centrifugal separator stops The processing of the storage case backflow.
3. water cleaning systems according to claim 1, it is characterised in that
The washings that the reflow treatment is included in purified treatment are unsatisfactory for making the washings flow back during defined water standard To the processing of the storage case.
4. water cleaning systems according to claim 2, it is characterised in that
The washings that the reflow treatment is included in purified treatment are unsatisfactory for making the washings flow back during defined water standard To the processing of the storage case.
5. water cleaning systems according to claim 1, it is characterised in that
It is also equipped with：
Positioned at than the storage case close to the position in downstream, the inclined plane with angle as defined in being formed relative to horizontal direction, Foreign matter is set to be deposited in the inclined plane with this from the tube settlers of washings segregating foreign objects；With
, close to the position in downstream, divided positioned at than the tube settler by centrifuging treatment from the centrifugation of washings segregating foreign objects Disembark.
6. water cleaning systems as claimed in any of claims 1 to 5, it is characterised in that
When the water level of the storage case reaches capacity water level or when the state of the water level that oversteps the extreme limit continue for the stipulated time, terminate The reflow treatment.
CN201480067739.2A 2013-12-18 2014-11-18 The water cleaning systems of washer Active CN105813982B (en)

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