CN104110064A - Anti-explosion deodorization device for sewer or septic tank - Google Patents
Anti-explosion deodorization device for sewer or septic tank Download PDFInfo
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- CN104110064A CN104110064A CN201410340826.2A CN201410340826A CN104110064A CN 104110064 A CN104110064 A CN 104110064A CN 201410340826 A CN201410340826 A CN 201410340826A CN 104110064 A CN104110064 A CN 104110064A
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Abstract
The invention discloses an anti-explosion deodorization device for a sewer or a septic tank. The anti-explosion deodorization device for the sewer or the septic tank comprises new ionic wind channels which are isolated and a mixing bin, the novel ionic wind channels extend into the mixing bin through an ejector structure, the mixing bin is provided with an exhaust gas emitting pipeline communicated with the sewer and the septic tank, and the mixing bin is further provide with an air outlet for emitting post-treatment gas. The plasma gas of anti-explosion deodorization device for the sewer or the septic tank can efficiently removing stinks of H2S, NH3 and the like, diluted methane and post-treatment stinks can meet discharge standards in the whole process; therefore, combustible gas in the septic tank can be emitted to the outside and the emitted mixing gas has no peculiar smell.
Description
Technical field
The present invention relates to a kind of methane (biogas) and odor treating device, refer in particular to the explosion-proof odor removal for sewer or septic tank.
Background technology
In recent years, in septic tank and municipal inspection shaft, because biogas (methane) gathers, the event being set off an explosion by smoking, set off firecrackers etc. happens occasionally, and not only causes the damage of communal facility, the cost of also having paid life having.
The various organic matters such as people and animals' ight soil, stalk, sewage all can produce biogas, and the main component of biogas is methane, and its characteristic is similar to natural gas.When Methane in Mine Air concentration reaches 8.6%～20.8% (by volume), run into naked light and just can form blast.
Because ight soil in the septic tank of public lavatory is regularly to draw clearly, RT is longer, is easy to produce and gather biogas in septic tank, and the biogas in the septic tank of public lavatory reaches finite concentration, run into naked light or Mars and just can form blast, have obvious potential safety hazard.
At present, Beijing is Jiu You public lavatory, 6 cities 6 only, more than 000, only the public lavatory of Chaoyang District, Beijing City sanitation of environment service center management just has 1, more than 000, the septic tank of public lavatory is generally all located at the position that excrement is convenient to take out in roadside, and some is also located at crowded business district, once blast, consequence is hardly imaginable.Therefore, prevent public lavatory septic tank blow-up, eliminate its potential safety hazard and be one and should solve, and be problem demanding prompt solution.
Therefore, the elimination of septic tank potential safety hazard and the application of technology thereof have important castering action to the management quality of urban restroom and residential quarter and operation security undoubtedly.
1, the investigation of septic tank potential safety hazard and conclusion
In recent years, the explosion accident of domestication manure pit frequently occurs, and below enumerates wherein several examples:
On March 3rd, 2007, near the septic tank outdoor body-building center in Bao Shengli community, Haidian District is blasted, and 3 well lids of settling are side by side blown up immediately, and well lid has been blown up the taxi in roadside, and no one was injured in good fortune;
Near Luo lion Lu Rongtai community, Wuhan in 2011, a septic tank is blasted, and 2 people are injured;
The septic tank blast of Lu Jiayu mansion, Haikou City blue sky in 2012, wound two people;
On January 21st, 2013, Jin Fu garden district, Shuan Fu new district, Jiangjin, septic tank is blasted; ground has 10 septic tank well lids, in blast, has 5 well lids to be blown up; each and every one well lid is all the cement well lid of tens jin of weights, and one of them well lid flies farthest, the Hua Taili over having flown to five or six meters.One child is blown up death;
On February 23rd, 2014, when two boys play in Shenzhen Luohu garden district, the firecrackers of lighting are filled in septic tank, cause biogas in pond and blast, the boy of 12 years old crashes in pond dead then and there;
Be all the high-incidence season of this type of event blast the summer of Spring Festival and high temperature, and Yongchuan District, Chongqing City, in 7 years, 6 explosion accidents that caused by biogas just occurred.
2, septic tank biogas feature and potential safety hazard analysis
Septic tank primary structure is three compartment septic tanks.Three compartment septic tanks are comprised of three sealing manure pits that are interconnected, and ight soil enters following current to the three ponds according to this, the first pond by entering soil pipe.
Three compartment septic tanks generally have steel concrete and brick two kinds of structures, mainly communicating pipe and the sealing manure pit that is divided into 3 lattice chambers that are interconnected, consist of.Wherein, excrement slag, fermentation and the effect of precipitation worm's ovum of holding back mainly worked in the first pond; Continuation fermentation is played in the second pond; The supernatant of storing by the second pond overflow is mainly worked in the 3rd pond, above each pond, is respectively equipped with breast hole.The supernatant flowing out from the 3rd pond feces outlet has not basically contained parasitic ovum and pathogenic microorganism, can be for farmland direct or directly enter city planting ductwork.
In septic tank, methane (being commonly called as biogas) is mainly to comprise Methanobacterium (Methanobacterium) by a class, the obligate anaerobe of Methanococcus (Methanococus) and Methanosarcina (Methanosarci) produces, they can utilize the anaerobic oxidation of hydrogen to obtain energy, take CO2 as electron acceptor, and level product is methane and water eventually.In septic tank, be mainly anaerobic reaction, so ubiquity methane and other fuel gas in septic tank.
The methane (being commonly called as biogas) producing, because its proportion is lighter, just can accumulate in the upper space of septic tank, reaches finite concentration, runs into naked light or Mars and just can set off an explosion.
Methane is blasted and must be possessed three conditions: certain methane concentration, generally, between 5%-15%, it is 9.5% left and right that the strongest blast occurs in methane concentration.Next is methane flach point, and the ignition temperature of general methane is 650 ℃-750 ℃ (seeing the following form).The methane that can ignite such as spark that friction produces are even clashed in naked light, electric spark, smoking.Methane concentration is different, and flach point is difference to some extent also, when concentration 6.58%, the most easily ignites.The 3rd is oxygen concentration, by experiment, learnt, blow-up boundary and oxygen concentration have substantial connection, and oxygen concentration increases, explosion limit expanded range, especially the upper limit improves sooner, and when oxygen concentration reduces, blow-up lower limit slowly increases, the upper limit declines rapidly, oxygen concentration is reduced to 12%, and methane blended gas lose explosivity, meets fire and does not also explode.
In addition, other gases that contain in septic tank, as ammonia, hydrogen sulfide also can set off an explosion under finite concentration, are various gas ignition temperatures and explosion limit in table.If table one is various gas ignition temperatures and explosion limit.
The analysis of causes of septic tank potential safety hazard
Septic tank blast belongs to chemical explosion, and its principle is due to after methane mixes with air, and methane concentration, in explosive range, runs into naked light and fierce exothermic reaction occurs, and produces a large amount of heats, and when gases are heated, they expand, and well lid and ight soil throwing are flown in the air.As can be seen here, septic tank blast must meet above-mentioned methane concentration, flach point and three conditions of oxygen concentration simultaneously.
If methane accumulates in septic tank, and concentration is in explosive range, flach point reaches 650 ℃ when above so, and (temperature that produces flame of striking a match reach flach point more than) methane will be blasted, therefore, the existence of methane is the main cause that causes septic tank potential safety hazard.
Contained ammonia in septic tank, hydrogen sulfide ratio are generally lower, but when causing methane blast, it is again combustion-supporting accomplice, its acting in conjunction, likely make in the situation less than the methane content of explosion limit concentration, when running into naked light, just ignited and blast, therefore, the ammonia in septic tank, the existence of hydrogen sulfide are to cause one of reason of septic tank potential safety hazard.
Due to the existence of methane, ammonia, hydrogen sulfide gas in septic tank with gather, once run into naked light, to blast, consequence is hardly imaginable, and therefore, it is apparent that septic tank exists potential safety hazard.
3, gas sampling investigation and data analysis in the septic tank of public lavatory
3.1 sample investigation
Concentration situation for gases such as methane, ammonia, hydrogen sulfide in the septic tank of further confirmation public lavatory, Beijing unlimited Shi Jia Entec Co., Ltd. and capital city, Beijing sanitation of environment design science research institute under the closely cooperating of Chaoyang, Beijing three teams of sanitation of environment service center to the gas in 78Zuo public lavatory, Chaoyang District septic tank, detect, effectively reliable for guaranteeing to detect data, each public lavatory detects 3 times, be that within 2-3 days, to get maximum value be standard interval time, analyze the content of methane gas in septic tank, thus the no security hidden trouble that exists of judgement septic tank.The following is methane gas in 78 septic tanks and detect data statistics summary sheet, Measuring Time: the 3-4 month in 2014, see the following form:
3.2 data analysis
From methane gas in 78 septic tanks, detecting data in data statistics summary sheet can find out, Methane monitoring value has 5 being greater than 50LEL septic tank, the septic tank of Methane monitoring value between 10 ~ 50LEL has 54, and Methane monitoring value is greater than ratio approximately 75.64% left and right that 10LEL accounts for surveyed septic tank.Concrete analysis result is as follows:
One, institute's survey septic tank all has the methane gas of variable concentrations to exist;
Two, in septic tank, methane content is subject to season, ight soil amount and draws clearly the factors such as time to affect.
1. the gentle effects of air pressure of being bullied, temperature is higher, and methane content is higher; Air pressure is lower, and methane gathers higher.
2. be subject to the different impact of ight soil amount in septic tank, methane concentration increases with ight soil amount.
3. affected by content liquid in pond, in content liquid pond how, methane concentration is lower.
4. be subject to septic tank cleaning frequency influence, draw clearly frequency higher, methane concentration is lower.
Therefore, different water closet septic tanks, ight soil content and draw clearly the difference of time in the temperature owing to detecting, septic tank, the concentration of the gases such as methane, ammonia, hydrogen sulfide is all different, the septic tank in even same seat public lavatory, because detection time is different, detects three its testing results also unidentical.The maximum value that namely same seat septic tank detects methane concentration is not to have at every turn.
Because detection time is in the 3-4 month, weather is not awfully hot, and temperature is not high, and to summer, the methane content in septic tank will inevitably increase.
Three, potential safety hazard is obvious
Gas in institute's survey septic tank, methane gas accounts for 44.02%, 20LEL～50 LEL(one-level at 10LEL～20 LEL and reports to the police, 18) account for 23.08%, surpass 50LEL(secondary and report to the police, 5) account for 6.41%.
Conventionally, in confined space, fuel gas volume fraction reaches 20LEL, just must take explosion precaution relatively, and for the place that surpasses 50LEL, just needs to process in time, otherwise just has the dangerous possibility of blasting.Therefore,, with regard to 78 public lavatory septic tank testing results, can say that the obvious lavatory of potential safety hazard accounts for 29.49%, approaches 1/3rd of total amount.And produce condition according to methane, and with the increase of temperature, the speed that produces methane in pond can be faster, and content can be more, and degree is estimated can be more taller than now, and the quantity that in septic tank, methane concentration exceeds standard also can increase.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of explosion-proof odor removal for sewer or septic tank, and foul smell is carried out discharging after purification up to standard.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that a kind of explosion-proof odor removal for sewer or septic tank, comprise isolated new ion wind passage, mixing bunker, this new ion wind passage extend in this mixing bunker by ejection structure, this mixing bunker is by waste air pipeline communication to sewer or septic tank, and this mixing bunker is also provided with the air outlet that emission treatment is crossed gas.
Further, in described ion wind passage, be provided with main air blower and plasma apparatus.
Further, described ejection structure is the different reducing shape of two ends bore, the mixing bunker described in the little one end correspondence of bore.
Further, on the described close waste air pipeline of mixing bunker, be connected with drainage blower fan.
Further, described plasma apparatus comprises the galvanic servo power supply and can control square-wave oscillator controlled of output; Described in square wave power amplifier is connected respectively to, can control servo power supply and can control square-wave oscillator, described in also utilizing according to the described signal of controlling square-wave oscillator output, can control the direct current generation ac square wave signal output that servo power supply is exported; After the input serial connection choke induction of simulator, go here and there again between two output points of described square wave power amplifier, the output of described simulator connects ionic tube, for converting the ac square wave signal of described square wave power amplifier output to sine wave signal, is input to described ionic tube.
Further, described plasma apparatus is also provided with automatic phase control module, and automatic phase control module includes the shaping unit, the phase error comparator and first that are connected in series successively and controls adapter, wherein, the input of this shaping unit is connected to described simulator output and receives after sine wave signal, generate the square-wave signal with frequency homophase, export described phase error comparator to, this phase error comparator receives respectively the output signal of square-wave signal and described square wave power amplifier and carries out phase demodulation processing, generate and output error signal and output to described first and control adapter, after receiving this error signal, this first control adapter is converted to corresponding direct-current control voltage, direct-current control voltage after high-frequency suppressing is processed as the described control voltage of controlling square-wave oscillator, adjustment in good time can be controlled the main clock frequency rate that square-wave oscillator produces, make the output amplitude of phase error comparator be tending towards 0.
Further, it also comprises the automatic current control module of series connection successively, and it comprises current acquisition converting unit, and comparator overshoot controller and second is controlled adapter; Wherein, this current acquisition converting unit receives the sinusoidal current of described ionic tube, convert the direct voltage output of this signal amplitude to, the reference signal that described comparator overshoot controller receives respectively this DC voltage and setting compares, output error signal, and this error signal is processed through overshoot, after high-frequency suppressing, become low frequency and control voltage output, described second controls adapter receives this low frequency and controls voltage and can control through the adaptive generation of conversion the control signal that servo power supply can be identified, and exports to and can control SERVO CONTROL power supply.
Further, it also comprises the timer that energy time delay opens and closes.
Further, it also includes the sensor of induction imflammable gas, and this sensor drives low resistance load to form by current amplifier.
Further, in ejection structure end, be provided with and prevent flap valve against the wind, on described waste air pipeline, be provided with the valve body of the air quantity that regulates the gas that decontaminates.The technique effect that the present invention reaches is as follows:
1. the present invention is for the odor removal of sewer or septic tank, scavenge without the large equipment of the carried charges such as ion device, blower fan, but by new ion wind passage and ejection structure, waste gas is incorporated into mixing bunker, therefore, can there is not the phenomenon that waste gas runs into charging equipment blast in this odor removal, very safe.
2. the plasma apparatus that the present invention adopts, plasma gas is to H
2s, NH
3deng gas, have efficient removal effect, this process, by the methane having diluted and the foul smell qualified discharge of processing, so just can guarantee the fuel gas in septic tank to get rid of outside mixing bunker, and the mist of simultaneously discharging is without peculiar smell.And odor removal operation is after 10 minutes, if sensor is still tested with the existence of fuel gas, drainage blower fan is opened automatically, remaining fuel gas in the mandatory eliminating septic tank of equipment, the time of reruning is 10 minutes, so circulation, until there is no fuel gas in pond, equipment reenters holding state afterwards.For guaranteeing that the anti-explosion safety of fuel gas in septic tank and long period are not overflowed to foul smell, odor removal has also been set regular discharge function simultaneously, even if sensor does not detect corresponding fuel gas, after one hour, equipment also can start voluntarily and move 10 minutes.
3. the advantages such as the present invention has compact conformation, energy consumption is low, maintenance cost is low, the life-span is long, easy to use, safe, applied range.Can be applicable to the explosion-proof deodorizing of Municipal sewer line engineering, residential quarter and public lavatory septic tank, deep drilling exploration exhaust explosion, the environment such as the rubbish of generation fuel gas and gas with foreign flavor and Wastewater Treatment Plant and food, medicine and chemical workshop.
Accompanying drawing explanation
Fig. 1 is that the present invention is for the structural representation of the explosion-proof odor removal of sewer or septic tank;
Fig. 2 is the structural representation of plasma apparatus of the present invention;
Fig. 3 is the structural representation of ionic tube of the present invention;
Fig. 4 is that the present invention is for the mounting structure schematic diagram of the explosion-proof odor removal of sewer or septic tank.
The specific embodiment
As shown in Figure 1, for the explosion-proof odor removal structure of the present invention for sewer or septic tank, comprise new ion wind passage 111, mixing bunker 112, this new ion wind passage 111 extend in this mixing bunker 112 by ejection structure 16, and this mixing bunker 112 is provided with the waste air pipeline 113 that is communicated to sewer or septic tank.On this mixing bunker 112, be also provided with emission treatment and cross the air outlet 110 of gas.In this ion wind passage 111, be provided with main air blower 13 and plasma apparatus 14.Ejection structure 16 is the different reducing shape of two ends bore, and the corresponding mixing bunker 112 in one end that bore is little, is provided with the flap valve 15 that prevents wind adverse current in ejection structure 16 ends.During work, main air blower 3 is sent into output plasma panel wind in plasma apparatus 14 by new wind by air intake 19, plasma panel wind is blown into ejection structure 116 simultaneously, produces high pressure plasma gas under the resistance of ejection structure 116 reducing shapes.Under the air distribution structure function of negative pressure, this high pressure plasma gas is passed through waste gas to introduce in mixing bunker 112 by exhaust outlet 18, and now, plasma gas carries out taste removal processing to discharge foul smell, can be to VOC, and H
2s, NH
3there is efficient decomposition efficiency, make the gas odorless of discharge.
Near on the waste air pipeline 113 of mixing bunker 112, be connected with drainage blower fan 17, this drainage blower fan 17 is explosion-proof fan, for guaranteeing the safe traffic of drainage fuel gas, can open where necessary, helps main air blower 13 drainage fuel gas.The valve body 12 that is provided with the air quantity that regulates the gas that decontaminates on described waste air pipeline, this valve body is ball valve.
Explosion-proof odor removal of the present invention also includes program control system 11, program control system 11 comprises sensor assembly and central internal controller and control and Long-distance Control interface, controllable switch power supply, sensor assembly adopts current amplifier to drive low resistance load to obtain stronger interference free performance, realizes long-distance transmissions and works reliably under severe electromagnetic environment.
Described central internal controller is in the embedded scm of increasing income, to realize redevelopment with completion system functions of the equipments.Wherein, the control logic of central processing unit has two versions.
Trade edition: do not use sensor to detect, sensor failure is set in circuit, system is only moved automatic cycle delay working function.Be mainly used in the septic tank in mobile public toilet or small-sized public lavatory.
The built-in two kinds of fixing timer control routines of trade edition, by controlling the program selector switch at interface, select:
Program 1: prolong 1 hour time interval, 10 minutes working times.
Program 2: prolong 2 hours time intervals, 20 minutes working times.
Strengthen version: use high-low-position sensor to carry out Stepped control.System can be applicable to large-scale public side institute septic tank, and the exhaust explosion of urban sewage pipe and deep drilling exploration produces the chemical workshop of fuel gas.Change sensor type also can the more applications of compatibility, and native system is orientated urban operating mechanism and the special-purpose explosion-proof deodorizing of industry and air cleaning system as.
The control logic of strengthening the central processing unit of version has:
1, delay function
Built-in two kinds of timer control routines (delay time and working time are adjustable), select by controlling the program selector switch at interface.
Program 1: prolong 1 hour time interval, 10 minutes working times.
Program 2: prolong 2 hours time intervals, 20 minutes working times.
Also can realize regular discharge function at installation timer.
2, sensor is controlled interface
Native system sensor is divided into high position sensor and low sensors (relative value).High position sensor is lower to the susceptibility of fuel gas, needs certain density fuel gas could allow its amplifier produce the absolute value level of trigger gate limit value.Low sensors is higher to the susceptibility of fuel gas, as long as contain fuel gas in tested gas, can allow its amplifier produce the absolute value level that triggers thresholding.
Each sensor all adopts Redundancy Design, has the sensor of two "or" relations to work simultaneously, improves system reliability.
3, sensor control logic
When low sensors detects fuel gas, start immediately the various output of bus output triggering and work simultaneously.Working time is automatically reset rear weight 30 minutes of low sensors, continues periodic duty thereafter according to delay function.
When high position sensor detects the fuel gas of high concentration slightly, start immediately bus output and trigger various output and work simultaneously, and lock other function.Need the reset/operation function in manual operation control panel to remove; Condition subsequent comprises that the absolute value of high position sensor has fallen back to normal level, normally works by delay function after being disengaged.
4, each controller weighted priority
The first order is preferential: high position sensor triggers.
The second level is preferential: low sensors triggers.
The third level is preferential: time delay triggers.
5, signal designation interface
1. plasma apparatus state indication:
Every independent plasma apparatus is used a bi-colour LED: when showing green light: represent that plasma panel deodorizing device has obtained working power, but ionic tube does not have place in circuit; When showing redness: expression ionic tube is being exported plasma.
2. central controller output logic indicator lamp:
Time dalay indicator light: when system standby is in time delay state, this lamp is pressed the frequency scintillation of 1 second 1 time; When system standby finishes, when in running order, this lamp Chang Liang.
Relay indicating light: be a bi-colour LED, when delayed time system triggering work, this lamp indication is green; When sensor-triggered system works, this lamp is designated as redness.
Alarm lamp: be a monochromatic indicator lamp, do not work at ordinary times: when high position sensor triggering work, this lamp is lighted.
The invention provides state indication and ann reset, procedure Selection function.Long-distance Control is to realize with the far-end of controlling interface redundancy controlling, and for realizing remote transmission, adopts hard edit code and electric current to amplify.
As shown in Figure 2, be Wind Volume low-voltage high-efficiency plasma apparatus 14 of the present invention, it comprises: can control servo power supply 1, for exporting direct current; Square wave power amplifier 4, be connected respectively to and described can control servo power supply 1 and the described square-wave oscillator 2 of controlling, for according to controlling the signal of square-wave oscillator 2 outputs and utilize the described direct current that can control servo power supply 1 output to generate ac square wave signal and export; Simulator 6, the input of simulator 6 is gone here and there between two output points of described square wave power amplifier 4 after being connected in series a choke induction 5 again, the output termination ionic tube 9 of simulator 6, is input to ionic tube 9 for converting the ac square wave signal of square wave power amplifier 4 outputs to sine wave signal.
In order to control the output frequency of voltage controlled oscillator, so that drive the clock in loop to work in all the time the resonant frequency point of resonance step-up, between simulator 6 and controlled oscillator processed 2, it is also provided with automatic phase control module 7, and automatic phase control module 7 includes the shaping unit 71, the phase error comparator 72 and first that are connected in series successively and controls adapter 73; Wherein, this shaping unit 71 can be zero-crossing comparator, its input is connected to simulator 6 outputs and receives after sine wave signal, generate the square-wave signal with frequency homophase, export phase error comparator 72 to, this phase error comparator 72 receives respectively the output signal of square-wave signal and square wave power amplifier 4 and carries out phase demodulation processing.Phase error comparator 72, need to input two paths of signals, and a road is the square-wave signal producing through shaping unit 71, and a road is the output signal of square wave power amplifier 4.This two paths of signals being carried out in phase error comparator 72 to 90 degree phase demodulations processes.Output error signal.Its logic state is: if two paths of signals phase phasic difference 90 degree, output error signal is 0, if the lag output signal of zero-crossing comparator drives signal 0 ~ 90 degree, output error signal is greater than 0(signal magnitude and depends on lagging phase angle), if the output signal drive of lead signal of zero-crossing comparator 90 ~ 180 degree, output error signal is less than 0(signal magnitude and depends on lagging phase angle).The signal condition of expressing output signal size is one group of positive negative pulse stuffing pair, and when equaling 0, the right time of positive negative pulse stuffing equates, when being greater than 0, positive pulse is longer than the duration of negative pulse, and when being less than 0, positive pulse is shorter than the duration of negative pulse.
Phase error comparator 72 generates and output error signal and output to the first control adapter 73, after receiving this error signal, this first control adapter 73 is converted to corresponding direct-current control voltage, direct-current control voltage after high-frequency suppressing is processed as the described control voltage of controlling square-wave oscillator 2, adjustment in good time can be controlled the main clock frequency rate that square-wave oscillator 2 produces, and makes the output amplitude of phase error comparator 72 be tending towards 0.Automatic phase control module is a phase feedback controller, by real-time adjustment, makes all the time the clock that can control square-wave oscillator 2 generations equate with the resonant frequency of once boosting.Make the output amplitude of phase error comparator be tending towards 0, reach circuit stable state.
In addition, output amplitude for controlling party wave power amplifier 4, so that the power square-wave signal amplitude that major loop produces is controlled, and then controls the energy that sends black box to, reach the object (ionic tube 9 is to work in " Zener " mode) of controlling ionic tube 9 electric currents.By employing, control the duty of the mode stabilizing ion pipe 9 of electric current, the isoionic amount of ionic tube 9 output is directly proportional to the product of voltage and current.Due to the inconsistency of external environment and ionic tube 9 parameters on the impact of operating current also much larger than the impact on operating voltage.As shown in Figure 1, ion device of the present invention is at simulator and can control and between SERVO CONTROL power supply 1, be also provided with automatic current control module and carry out Current Control, the input signal of this automatic current control module is ionic tube 9 current signals, and output signal is to control the output voltage of servo power supply 1.The output voltage that can control servo power supply 1 is directly proportional to the amplitude of square wave power amplifier 4, has also just controlled square-wave output voltage simultaneously; Automatic current control loop also provides external control port, and the reference signal that input has been set in advance, by regulating the reference signal parameter of this port to reach the output amplitude of controlling whole equipment.
Automatic current control module, comprises current acquisition converting unit 74, and comparator overshoot controller 75 and second is controlled adapter 76; Wherein, this current acquisition converting unit 74 receives the sinusoidal current of ionic tube 9, converts the direct voltage output of this signal amplitude to, and current acquisition converting unit 74 is conventional Collect conversion circuit, is not described in detail in this.The reference signal that comparator overshoot controller 75 receives respectively this DC voltage and setting compares, output error signal, and this error signal is processed through overshoot, after high-frequency suppressing, become low frequency and control voltage output, second controls adapter 76 receives this low frequency and controls voltage and can control through the adaptive generation of conversion the control signal that servo power supply 1 can be identified, and exports to and can control SERVO CONTROL power supply 1.
As shown in Figure 3, be the structural representation of ionic tube 9 of the present invention, in the present embodiment, ionic tube 99 comprises the discharge medium that a glass tube is made, and this glass tube 95 is SiO2 glass tube, and its thickness is 0.6 ~ 1mm, one end shutoff of glass tube 95.Inside and outside wall at glass tube 95 is all installed metal electrode, and one is that anode 93, is negative electrode 94.Preferentially, anode 93 is arranged on the inner side of glass tube 95, and negative electrode 94 is arranged on glass tube 95 outsides ground connection, and the negative electrode 94 in outside is not charged like this, can guarantee safety.Anode 93 can be by the fine aluminium sheet material of 0.15 ~ 0.5mm thickness, diameter is made in dislocation to be the hole of 1.5 ~ 3.0mm and to be rolled into cylinder with glass tube 95 inwall same diameter and to be installed in glass tube 95 and to make, also can adopt the techniques such as vacuum coating is that the metallic nickel that glass tube 95 inwalls evenly plate 0.05 ~ 0.2mm thickness is made, and can also adopt thickness is that the pure aluminum foil of 0.05 ~ 0.10mm is rolled into the cylinder identical with glass tube inner diameter and is installed in glass tube and makes.Negative electrode 94 can be made into stainless steel cloth by stainless steel wire, and is rolled into cylinder identical with glass tube external diameter and makes, and its inner surface will fully contact with glass tube 95 external surfaces.Glass tube 95 not one end of shutoff seals by base 92, after vacuumizing, fills the inert gases such as helium or nitrogen with in glass tube 95.Anode 93 is drawn anode connection terminal 1 through base 92.
By fuel gas being produced to the research of reason and combustable gas concentration size variation rule, combustable gas concentration in sewer or septic tank is to have very complicated Changing Pattern, so in order to ensure the validity to septic tank explosion prevention measure, device sensor is set as: fuel gas detected, immediately operation.
As shown in Figure 4, the present embodiment be take septic tank that pond internal construction is standard three lattice structures and is described as example, septic tank explosion prevention deodorizing principle arranges admission pipe on each grid space top of three-grid septic tank, admission pipe is connected with explosion-proof odor removal by stack 22, explosion-protection equipment is installed in housing 20, the keying of explosion-proof odor removal is controlled in the instruction that explosion-proof odor removal sends according to methane transducer in septic tank, thereby the methane concentration of controlling in septic tank remains in safe range.
Because there is hydrogen sulfide gas in septic tank, it just can produce penetrating odor at the hydrogen sulfide of 0.136 ~ 4.6PPM, so the septic tank in most of lavatory, around stink is serious, when septic tank is taken safety measures, must consider deodorizing problem.
When fuel gas and other foul smell were when pipeline entered sensor, when sensor detects pond and contains methane or biogas, instruction central authorities internal controller makes equipment convert open state to from holding state, plasma panel deodorizing device now, and main air blower 13 is opened simultaneously.By the negative-pressure air-flow organizational styucture of ejection structure 16, main air blower 13 can be extracted into mixing bunker 112 by gas in septic tank, the plasma panel wind of blowing over main air blower 1 mix (main air amount: drainage air quantity=10:1), because plasma gas is to H
2s, NH
3have efficient removal effect, this process, by the methane having diluted and the foul smell qualified discharge of processing, so just can guarantee the fuel gas in septic tank to get rid of outside storehouse, and the mist of simultaneously getting rid of by air outlet 21 is without peculiar smell.Equipment operation is after 10 minutes, if sensor is still tested with the existence of fuel gas, drainage blower fan 17 is opened automatically, remaining fuel gas in the mandatory eliminating septic tank of equipment, the time of reruning is 10 minutes (time setting), so circulation, until there is no fuel gas in pond, equipment reenters holding state afterwards.
For guaranteeing that the anti-explosion safety of fuel gas in septic tank and long period are not overflowed to foul smell, equipment has been set regular discharge function simultaneously, even if sensor does not detect corresponding fuel gas, after one hour, equipment also can start voluntarily and move 10 minutes.
As there is dysfunction in equipment, or the situation such as power failure, opening of device standby electric power, and start alarm signal.
The present embodiment, of the present inventionly take septic tank explosion prevention odor removal as example, and effect evaluation is as follows:
(1) septic tank explosion prevention odor removal detects
Septic tank explosion prevention odor removal was on April 7th, 2014, and the effect to the explosion-proof odor removal of movable toilet septic tank of Chaoyang District Chaoyang Park general woods, has carried out contrast and detected.
Equipment operation stop after one week in morning April 7 9:00 start to detect for every 1 hour in a septic tank gas concentration testing result in Table 4.
After septic tank explosion prevention odor removal startup on April 8,9:00 starts, gas concentration in one hour detection septic tank.
Testing result in Table.
analysis of test results
As seen from the above table, April 7, from methane volume fraction in 9:00-18:00 measured result septic tank between 60-79 LEL, H
2s concentration between 47-50ppm, NH
3concentration is at 3-8ppm, O
2content is 14.8% left and right.
April 8, after device start, methane content, H in septic tank
2s, NH
3concentration declines very soon, O
2content rises to 21.9%.Illustrate and install after septic tank explosion prevention odor removal, successful aspect reduction septic tank methane content.
4.4 septic tank explosion prevention odor removal effect evaluation conclusions:
1. install after septic tank explosion prevention odor removal, successful aspect reduction septic tank methane content, is the effective ways of eliminating septic tank potential safety hazard.
2. from septic tank internal contamination gas, can find out in septic tank except methane H
2s and NH
3content not low yet, H in septic tank
2s and NH
3the excessive periphery stink that causes pollutes.Causing micro-negative pressure in septic tank is the effective ways that address this problem.
Septic tank explosion prevention odor removal is installed, solve septic tank potential safety hazard make in septic tank, form micro-negative pressure, can solve stink simultaneously and overflow the problem of polluting periphery.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. the explosion-proof odor removal for sewer or septic tank, it is characterized in that, comprise isolated new ion wind passage, mixing bunker, this new ion wind passage extend in this mixing bunker by ejection structure, this mixing bunker is by waste air pipeline communication to sewer or septic tank, and this mixing bunker is also provided with the air outlet that emission treatment is crossed gas.
2. the explosion-proof odor removal for sewer or septic tank as claimed in claim 1, is characterized in that, in described ion wind passage, is provided with main air blower and plasma apparatus.
3. the explosion-proof odor removal for sewer or septic tank as claimed in claim 1, is characterized in that, described ejection structure is the different reducing shape of two ends bore, the mixing bunker described in the little one end correspondence of bore.
4. the explosion-proof odor removal for sewer or septic tank as claimed in claim 1, is characterized in that, on the described close waste air pipeline of mixing bunker, is connected with drainage blower fan.
5. the explosion-proof odor removal for sewer or septic tank as claimed in claim 2, is characterized in that, described plasma apparatus comprises the galvanic servo power supply and can control square-wave oscillator controlled of output; Described in square wave power amplifier is connected respectively to, can control servo power supply and can control square-wave oscillator, described in also utilizing according to the described signal of controlling square-wave oscillator output, can control the direct current generation ac square wave signal output that servo power supply is exported; After the input serial connection choke induction of simulator, go here and there again between two output points of described square wave power amplifier, the output of described simulator connects ionic tube, for converting the ac square wave signal of described square wave power amplifier output to sine wave signal, is input to described ionic tube.
6. the explosion-proof odor removal for sewer or septic tank as claimed in claim 5, it is characterized in that, described plasma apparatus is also provided with automatic phase control module, and automatic phase control module includes the shaping unit, the phase error comparator and first that are connected in series successively and controls adapter, wherein, the input of this shaping unit is connected to described simulator output and receives after sine wave signal, generate the square-wave signal with frequency homophase, export described phase error comparator to, this phase error comparator receives respectively the output signal of square-wave signal and described square wave power amplifier and carries out phase demodulation processing, generate and output error signal and output to described first and control adapter, after receiving this error signal, this first control adapter is converted to corresponding direct-current control voltage, direct-current control voltage after high-frequency suppressing is processed as the described control voltage of controlling square-wave oscillator, adjustment in good time can be controlled the main clock frequency rate that square-wave oscillator produces, make the output amplitude of phase error comparator be tending towards 0.
7. the explosion-proof odor removal for sewer or septic tank as described in claim 5 or 6, it is characterized in that, it also comprises the automatic current control module of series connection successively, and it comprises current acquisition converting unit, and comparator overshoot controller and second is controlled adapter; Wherein, this current acquisition converting unit receives the sinusoidal current of described ionic tube, convert the direct voltage output of this signal amplitude to, the reference signal that described comparator overshoot controller receives respectively this DC voltage and setting compares, output error signal, and this error signal is processed through overshoot, after high-frequency suppressing, become low frequency and control voltage output, described second controls adapter receives this low frequency and controls voltage and can control through the adaptive generation of conversion the control signal that servo power supply can be identified, and exports to and can control SERVO CONTROL power supply.
8. the explosion-proof odor removal for sewer or septic tank as claimed in claim 1, is characterized in that, it also comprises the timer that energy time delay opens and closes.
9. the explosion-proof odor removal for sewer or septic tank as claimed in claim 1, is characterized in that, it also includes the sensor of induction imflammable gas, and this sensor drives low resistance load to form by current amplifier.
10. the explosion-proof odor removal for sewer or septic tank as claimed in claim 9, is characterized in that, is provided with prevents flap valve against the wind in ejection structure end, is provided with the valve body of the air quantity that regulates the gas that decontaminates on described waste air pipeline.
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| CN107632538A (en) * | 2017-10-13 | 2018-01-26 | 河北瑞程思科技有限公司 | A kind of more control adapters of fresh air |
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| CN110442054A (en) * | 2019-07-24 | 2019-11-12 | 昆明理工大学 | Sewer biogas real-time detection and purification embedded Internet of Things device based on LoRa |
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| CN104110064B (en) | 2015-12-30 |
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