CN2068424U - Protector of barrel high voltage electrostatic precipitator - Google Patents

Abstract

The utility model discloses a protector of barrel high voltage electrostatic precipitator, which comprises an insulating spacer device introduced by a high voltage DC power supply, an electrical heating device arranged on the surrounding of the spacer position, a hot blast cleaning device of spacing and insulation, the heat insulation of a dust cleaner casing, a mechanical vibration device, an automatic program control device of the whole machine running, etc. So the high voltage electrostatic dust precipitating apparatus of the utility model has a wide adaptation. Besides, the selectivity of dust gases is smaller. In general, the protector of barrel high voltage electrostatic precipitator can be applied to any dust precipitating of dust gases of physics and chemistry except combustible and explosive dust gases. Besides, the dust precipitating can not be affected by the changing of humidity temperature, etc. The protector of barrel high voltage electrostatic precipitator has the advantages of high capability of dust precipitating, good effect, low running cost and manufacturing cost saving, which can be widely applied to trapping and recovering various power dust polluting environment generated in the industrial production.

Description

Protector of barrel high voltage electrostatic precipitator

A kind of protection, assurance device that is used on the cartridge type high-voltage electrostatic dust separator.The present invention is by capture commonly used at present; reclaim the deduster of the dust of the various contaminated environment that produced in the industrial production; come as development on the basis of the protective device of Elex precipitator and garden cartridge type electric cleaner; above-mentioned deduster all has many defectives in application, trace it to its cause be their perfect inadequately, the not enough system of protective device or lack protective device and assurance device etc. cause.As Elex precipitator, structure is comparatively reasonable, and dedusting function is also more complete, and its reason is on this deduster structure certain protection device to be arranged, as heating and hot air cleaning porcelain bushing shell device are arranged in this deduster structure.Discharge electrode has multi-form vibration dust-cleaning structure with the collection ash, so can guarantee not produce dewfall and creepage puncture; But this deduster is because the protection system imperfection; collect the high resistivity dust difficulty so exist; do not reach the dust removing effects of requirement; particularly be not suitable for gathering dust of cement plant dust; in addition, this deduster also exists manufacturing, installation complexity, operation inconvenience, high, the incompatible generally defects such as dedusting of tolerance of cost.And another kind of garden tubular style electric cleaner, though it is simpler that it and the former relatively have structure, effectively specific collection area is bigger, utilization rate is higher, it is comparatively convenient to make installation, investment is than advantages such as provinces, but this deduster is owing to lack the certain protection device, so it is not strong to exist adaptability, can not long-time running, particularly be not suitable for water content height in the dirt gas, hydrophily, the dedusting of dust such as coherency, simultaneously, this garden tubular style electric cleaner only is applicable to the processing of the dirt gas that tolerance is less, and just be difficult to adopt when handling the excessive dirt gas of tolerance, reason is that this deduster is that dirt gas directly enters in the deduster, when design, do not consider the distribution of air-flow yet, even multitube, it is also bigger that some handles the tolerance deviation, reduced due dust collection efficiency, the discharge electrode that also has garden tubular style electric cleaner is directly to hang at the electric cleaner top with the high pressure porcelain knob, directly contact with dirt gas, discharge electrode dust stratification dewfall very easily like this, cause the two poles of the earth to bump electrical breakdown, deduster can't be worked on; In addition, this deduster is only considered dust suction, there is not deashing device during design, so when dirt gas enters into ash-collecting pipe, under electric field action, be adsorbed to barrel, sink after the neutralization in ash bucket, but hydrophily, coherency dust still can continue to be adsorbed on barrel, cause a kind of separation layer, when this separation layer accumulates to certain thickness, will form electric field sealing, when dust humidity is big, can cause anti-corona and lose dedusting function.In a word, this deduster only is suitable for the dry dust that captures some non-hydrophilies, non-coherency, low resistivity, normal temperature owing to lack protective device, is not suitable for the dedusting work to complicated dust, also at all can not long-time running.

In view of the foregoing, task of the present invention is the protection assurance device that designs and manufactures a kind of cartridge type high-voltage electrostatic dust separator.This protection assurance device has been arranged; the cartridge type high-voltage electrostatic dust separator is wide with regard to reachability set ash area, utilization rate is high; can long-time running also can be suitable for that tolerance is big, the humidity variations in temperature is big and the function of the dust of hydrophily, coherency, high resistivity more complete; be applicable to the dedusting work of complicated dust; cost is lower, makes a kind of comparatively easily high-voltage electrostatic dust separator is installed.

The method that solves task of the present invention is; when manufacturing and designing this cartridge type high-voltage electrostatic dust separator; we have designed a whole set of protection assurance device, and these protection assurance devices are: devices such as the hot air cleaning protective device of the insulated isolated device that high-voltage DC power supply is introduced, the electrical heating protective device around the isolated insulation position, isolated insulation, housing mechanical type vibration cleaning device, operation automatic program control.Be specially the electric field protective device, this device is the insulation isolation ward that has manufactured and designed electric cleaner, carries out the insulation isolation that high-voltage DC power supply is introduced, and makes the insulation division board with polytetrafluoroethylene (PTFE), glass epoxy.When dirt temperature degree adopts isolated form (Fig. 2) in time below 100 ℃; Adopt other isolated form (Fig. 3) in the time of more than 100 ℃, make high pressure introduce and hang and dirt gas between separate with dielectric panel, and discharge electrode passes from the insulation board center, if dirt temperature degree is in the time of 350～400 ℃, can also adopt insulator tubular type electric field protection structure (Fig. 5), this form just can directly be handled with regard to not needing that high temperature dirt gas is carried out decreasing temperature and increasing humidity, around isolating the position, manufactured and designed the electrical heating protective device simultaneously, design has electric heating tube to steel plate heating around the insulation board, make steel plate remain drying, and the insulation division board simultaneously designed the hot air cleaning protective device towards electric field; The cleaning temperature is more than dew point, and wind speed is higher than dirt gas speed, blasts isolation ward with centrifugal blower, and hot blast blows out from the slit of insulation board and housing, makes insulating surfaces form wind and hangs, and dirt gas can't arrive insulation board, and heating can be adopted heating wire or electrothermal tube according to temperature.And manufactured and designed the housing mechanical oscillation deashing device of adhesion type plate vibration and the attemperator of housing, adopt the adhesion type plate vibrator.About vibration cleaning each one, power is according to what and dust characteristic decision of pipe, and the vibration period is adjustable, general 30～60 seconds of time of vibration, barrel and ash bucket etc. are vibrated when vibrator turns round, and fall ash bucket to electronic ash-valve and discharge yet the dust that is adsorbed on barrel just can shake.And the thickness of the heat-insulation layer of this attemperator decides with dirt gas and atmosphere minimum temperature difference, and adopting material is aluminium silicate fiber peacekeeping expansion perlite; Also designed the automatic program control mechanism of the even conductance stream of air inlet mechanism, lock wind ash exhauster and the operation of multitube simultaneously.Automatic program control after the shutdown has guaranteed starting next time of deduster effectively; Automatic program control after the start can have been protected electric field effectively.

The cartridge type high-voltage electrostatic dust separator is owing to designed protective device, the introducing of high-voltage DC power supply is made division board with polyfluortetraethylene plate or glass epoxy, form the isolation ward of a seal, the protective device of isolation ward tool hot air cleaning makes high pressure introduce and hang partly and open with the dirt air bound simultaneously, overcome directly hanging at the electric cleaner top of former garden tubular style electric cleaner effectively with the High-Voltage Insulation porcelain knob, appoint dirt gas directly to contact with porcelain knob, easily form porcelain knob dust stratification dewfall, make electric cleaner housing (anode) and corona discharge electrode (negative electrode) the conducting puncture that is short-circuited, burn out electric component, high pressure ballast transformer etc. and defect that deduster can't be moved; Simultaneously, in housing (anode promptly collects the grey utmost point) design ash removal equipment for flapping is arranged, having overcome isolation that the dust that gathers with the long-pending thick back of the continuous absorption of dust skin is subjected to nexine to be neutralized dust effectively can not get neutralizing and makes these dust and the dust of being caught by corona discharge electrode produce the same sex to repel each other, the dust that carries same sex electronics in a large number that enters electric field is taken out of outside the deduster by air-flow, and do not reached the effect of dedusting; In addition, we are designed to the prickle shape with corona discharge electrode (negative electrode), will collect the grey utmost point and be designed to the tubulose arc surfaced in order to discharging, receive electronics; Simultaneously, because design has even conductance stream device, overcome the excessive defective of tolerance deviation that enters between each pipe, thereby strengthened dust-collecting efficiency; Design has lock wind ash exhauster, has solved a large amount of atmosphere and enter deduster from cinder-discharging port under blower fan gravitation, and the dust that is deposited in the ash bucket is taken up the defect that produces reentrainment of dust once more; Because design has electrical heating and hot air cleaning protective device; so can adapt to dedusting work to multiple complicated dust; and the automatic program control device has been adopted in design in the entire work process of this deduster; so both can reduce the fault that misoperation causes; can reduce labor intensity again; the startup, heating cleaning, the ash discharge of air inducing lock wind, main equipment starting, rapping shutdown etc. of deduster all can be undertaken by set program, and can be adjusted easily according to humiture and heat and time of hot air cleaning etc.

The cartridge type high-voltage electrostatic dust separator is because above-mentioned protection assurance device is equipped with in design; so it is wide, also less to the selectivity of dirt gas that it has an adaptive surface than other deduster; generally except that inflammable and explosive dirt gas; be applicable to the dedusting of any physics and chemical dirt gas, and be not subjected to the influence of climate factor variations such as temperature, humidity.Its dust-collecting efficiency height, general dust removal efficiency can reach 99, more than 7%, be no more than at 10% o'clock at the dust granules more than 88 microns, and inlet concentration is at 30～40 gram/marks rice ³The Shi Caiyong primary dust removing just can reach discharging standards, and this deduster allows the import waviness to reach as high as 50～60 gram/marks rice ³Simultaneously, this deduster reduced investment, cost are low, general comparable Elex precipitator cost low 50～100%, this deduster good dedusting effect of what is more important, instant effect, operating cost are cheap, if this deduster is used for any position dedusting in cement plant, general low value dust needs eight months, and the high value dust only needs the gross investment with regard to recoverable cartridge type high-voltage electrostatic dust separator in three months; This equipment can move more than 5 years generally speaking, and its operating cost is low, generally per hour moved the only power consumption several years.The cement plant is in low temperature rainy season, and diameter is 1,83 meter, raw mill, it is 10～11 tons that design load is produced during for platform, and real producing generally has only 5～6 tons, if install the cartridge type high-voltage electrostatic dust separator of our design, all can reach design level then any season, and power saving; In addition; it is easy that this deduster is also had a bookkeeping; characteristics such as fault is few, the runtime is long; because protection assurance devices such as electric field protection, housing rapping, autocontrol operation are arranged; frequent starting and the shutdown of special adaptation; and blower fan of dedusting, rapping etc. all be equipped with Protector for electric appliances such as electrothermal relay, so complete machine is difficult for breaking down and damaging.

Concrete structure of the present invention is provided by following embodiment and accompanying drawing.

Fig. 1, cartridge type high-voltage electrostatic dust separator overall appearance schematic diagram.

Isolated insulation isolation ward vertical section schematic diagram on Fig. 2, the cartridge type high-voltage electrostatic dust separator.

The last isolated insulation isolation ward schematic cross section of Fig. 3, cartridge type high-voltage electrostatic dust separator.

The other isolation ward vertical section schematic diagram of Fig. 4, cartridge type high-voltage electrostatic dust separator.

The insulator tubular type electric field protection structure vertical section schematic diagram of Fig. 5, cartridge type high-voltage electrostatic dust separator.

The insulator tubular type electric field protection structure schematic cross section of Fig. 6, cartridge type high-voltage electrostatic dust separator.

Fig. 7, cartridge type high-voltage electrostatic dust separator operation principle schematic diagram.

Fig. 8, cartridge type high-voltage electrostatic dust separator electrical principle schematic diagram.

In the accompanying drawing 1,1, soft electronic ash-valve; 2, the air inlet kuppe; 3, lower chamber; 4, corona wire; 5, air blast; 6, electronic rapping frame; 7, inspection platform; 8, discharge pipe; 9, air-heater; 10, isolation ward; 11, high pressure is introduced porcelain bushing shell; 12, the high voltage source transformer; 13, electronic rapping machine; 14, dust leg; 15, manhole (manhole); 16, ash bucket; 17, mounting; 18, warm-air pipe; In the accompanying drawing 2,1, electrothermal tube; 2, the high pressure lead-in cable; 3, porcelain bushing shell; 4, insulating bar; 5, heating blower; 6, electric heating tube; 7, hang horizontal adjusting rod; 8, the corona wire suspension rod; 9, the insulation division board; 10, isolate steel plate.In the accompanying drawing 3,1, the isolation ward box hat; 2, electric heating tube; 3, the insulation division board; 4, hang the adjusting cross bar.In the accompanying drawing 4,1, steel sheel; 2, high pressure inlet wire cable; 3, high pressure inlet wire porcelain bushing shell; 4, hang insulating bar; 5, the cleaning hot blast; 6, the hot blast heating tube; 7, hot air cleaning blower fan; 8, the insulation division board; 9, electric heating tube; 10, the corona wire suspension rod; 11, corona wire.In the accompanying drawing 5,1, high pressure porcelain protecting pipe; 2, garden shape electric heating tube; 3, high pressure is introduced porcelain bushing shell; 4, hang insulating bar; 5, air-heater; 6, the cleaning hot blast; 7, the corona wire suspension rod; 8, isolate steel plate.In the accompanying drawing 6,1, steel sheel; 2, garden shape electric heating tube; 3, high pressure porcelain protecting pipe; 4 high pressure lead-in cables; 5 high pressure are introduced porcelain bushing shell; 6, horizontal suspension rod.In the accompanying drawing 7,1, ash tube; 2, electronic ash-valve; 3, air intake cover; 4, ash-collecting pipe; 5, form vibrator; 6, electric heating tube; 7, hang insulating bar; 8, air-heater; 9, warm-air pipe; 10, hanging structure; 11, the insulation division board; 12, last septum of ventricles of heart is from plate; 13, working fan; 14, the discharge prickle; 15, the dust that is adsorbed; 16, the dust-laden exhaust gas import, ← ... the dust-laden exhaust gas direction of motion, ←-the cleaning hot blast direction of motion, ← The cleaned air passes direction of motion.In the accompanying drawing 8,1, interlocking; 2, blower fan; 3, the rapping loop; 4, ash discharge; 5, auxiliary; 6, pressurization; 7, heating circuit; 8, control loop; 9, left blower fan; 12, right blower fan; 11, electronic ash-valve; 12, electric motor of shaker; 13, electric motor of shaker; 14, electric heating tube; 15, air-heater; 16, storage heater; 17, high-voltage rectifier; 18, power supply control; 19, high voltage electric field; 20, high voltage source ground connection; Fc, contactor, ZJ auxiliary reclay, WK universal switch, SJ time breaker, TA, QA button, XD signal lamp.

Embodiments of the invention can Fig. 7 and in conjunction with Fig. 8 the working condition that it is concrete are described; as shown in Figure 8; air switch 2WK and conversion universal switch 1WK close; power connection; rotate key button 1QA; procedure auto-control begins; heating tube among Fig. 76 like this; air-heater 8; warm-air pipe 9; electronic ash-valve 2 brings into operation; time relay 2SJ among Fig. 8; the 3SJ action; when 2SJ walks 8 minutes; the electric field protection forms; high-voltage rectifying transformer ZB power connection; at this moment; manually the transformer synchronizer knob transfers to 70KV with voltage; electric current 6～7mA; this moment, electric field formed; corona discharge electrode produces the corona circle; working fan 13 startup work among Fig. 7 after 3 minutes; the starting of main equipment power connection, along with equipment operation dirt gas enters in the electric cleaner from airduct 16 under the introducing of blower fan 13, dust is punctured insulation by a large amount of high-pressure electronics that corona discharge electrode discharges; make dust carry certain amount of electrons and under the effect of electric field force and heteropole gravitation, overcome airflow acting force and be adsorbed to dust collecting electrode to dust collecting electrode deflection, obtain in the anode and after be neutral.Yet cleaned air passes is by air-introduced machine sucking-off electric cleaner.When the time relay 3SJ among Fig. 8 walks to 10 minutes, time relay 4SJ action, mechanical vibrator 5 vibrations among Fig. 7, being adsorbed to dust 15 on the control of dust tube wall is shaken and is fallen to being deposited to ash bucket, discharged by electronic ash-valve 2, when the time relay is transported 20 seconds, 3SJ cuts off the 4SJ power supply, vibrator 5 stops vibration among Fig. 7, the operation of starting from scratch again of the 3SJ time relay, make a round trip per like this 10 seconds: as long as blower fan 13 power supplys of pressing during shutdown among stop botton 1QA main equipment and Fig. 7 disconnect, and time relay 1SJ action, manual-lock high-voltage rectifying transformer after 2 minutes, above-mentioned like this vibrator 5, electronic ash-valve 2 continues operation, and the dust that vibrates back casing absorption in 10 minutes is shaken, the residual all portion's discharges greatly of the dust in the electric cleaner; When 1SJ goes to 20 minutes, aforesaid heating tube 6, air-heater 8, warm-air pipe 9, electronic ash-valve 2 is all cut off the electricity supply automatically.In addition, for making the normal effectively operation of deduster, we have also added one group of hand push button in addition, can strengthen the deashing of housing, the deashing work of corona discharge electrode so at any time.Time relay 2SJ can effectively carry out electric field protection control adjustment according to the humidity of dirt gas and the temperature of atmosphere, when dirt gas high humidity, and when atmospheric temperature is hanged down, adjustable length of 2SJ time, otherwise adjustable weak point; Time relay 3SJ and 4SJ then can regulate according to dust content, dust characteristic in the dirt gas, when high as if the big concentration of dust cohesion, and adjustable weak point of 3SJ action cycle, the adjustable length of 4SJ time of vibration.

Claims (4)

1, the protective device of cartridge type high-voltage electrostatic dust separator; it is characterized in that; this device is on the top of deduster the insulation isolation ward to be arranged; the introducing of high-voltage DC power supply and hanging position occupy in the isolation ward; air-heater is housed on the isolation ward communicates with it, the ash-collecting pipe of insulation isolation ward and its underpart is separated by the insulation division board, and discharge electrode passes through to ash-collecting pipe from insulation division board center; around the insulation division board electric heating tube is housed, the ash-collecting pipe shell is equipped with the adhesion type plate vibrator.

2, device as claimed in claim 1, it is characterized in that the insulation isolation ward that HVDC is introduced and hung, have occupy above the ash-collecting pipe, occupy above the ash-collecting pipe, discharge electrode is by insulation during division board, and what be with porcelain bushing shell again on the discharge electrode of discharge electrode and insulation division board intersection occupy three kinds of forms of both sides, ash-collecting pipe top with the insulation isolation ward.

3, device as claimed in claim 1, it is characterized in that insulating all has certain slit between division board and the housing or between discharge electrode and the porcelain bushing shell.

4, as claim 1,2 or 3 described devices, the division board that it is characterized in that insulating is polytetrafluoroethylene (PTFE) or glass epoxy.

Images