CN202700281U - Pulse back-blowing ash removal device with telescopic blowing pipe - Google Patents
Pulse back-blowing ash removal device with telescopic blowing pipe Download PDFInfo
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- CN202700281U CN202700281U CN 201220338961 CN201220338961U CN202700281U CN 202700281 U CN202700281 U CN 202700281U CN 201220338961 CN201220338961 CN 201220338961 CN 201220338961 U CN201220338961 U CN 201220338961U CN 202700281 U CN202700281 U CN 202700281U
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Abstract
The utility model discloses a pulse back-blowing ash removal device with a telescopic blowing pipe. The device comprises a plurality of blowing pipelines, wherein a plurality of nozzles are arranged in the bottom side of each blowing pipeline; each nozzle is arranged above a gas ejector corresponding to a filtering unit; each blowing pipeline is communicated with a back-blowing gas storage tank through a corresponding pulse back-blowing valve respectively; each blowing pipeline consists of an inner pipe and an outer pipe which are hermetically and slidably arranged; the nozzles are arranged in the outer pipe; a blowing hole is formed in the bottom side of the pipe wall at the tail end of the inner pipe; and the other end of the inner pipe is connected with the pulse back-blowing valve through a gas supply pipe. During pulse back-blowing ash removal, the inner pipe in the blowing pipeline is controlled to do axial telescopic motion opposite to the outer pipe, so that the blowing hole in the inner pipe is only correspondingly overlapped with one nozzle in the outer pipe at the same moment; since high-voltage gas is only blown by the gas ejector corresponding to the nozzle, the ash removal efficiency and the back-blowing strength can be improved; and a gas flow can be automatically guided during blowing, so that the phenomenon of deflection of the blown gas flow is avoided.
Description
Technical field
The utility model is about a kind of gas-solid separating device, relates in particular to a kind of pulse backblowing deashing device with telescopic injection tube that is applicable to the rigid filter element.
Background technology
In chemical industry, oil, metallurgy, electric power and other industries, often produce high-temperature dusty gas; Because different process need to recover energy and reach environmental emission standard, all needs these high-temperature dusty gas are carried out dedusting.Gas cleaning at high temperature is directly to carry out gas solid separation under hot conditions, realizes a technology of gas purification, and it can farthest utilize the physics sensible heat of gas, potential chemical heat and kinetic force, improve energy utilization rate, process simplification is saved equipment investment simultaneously.
The rigid filter elements such as the porous sintered metal filter element of being made by metal dust or metallic fiber or ceramic porous filter element; has good anti-seismic performance; mechanical strength; high temperature resistant (operating temperature is generally all greater than 500 ℃); corrosion-resistant and thermal shock resistance properties; simultaneously because they have higher filtering accuracy (basic Ex-all is greater than the particle more than the 5 μ m) and filter efficiency (filter efficiency is up to 99.9%); therefore be widely used in gas cleaning at high temperature and field of purification; be used for protecting upstream device, realize the technique separation or reach environmental regulations.
After high-temperature dusty gas enters filter, dust granules thing in the air-flow is intercepted at the outer surface of filter element, forms cake layer, and gas enters into subsequent technique by the porous channel in the filter element, gas after filtering is clean gas, and dust concentration is very little.Along with the carrying out of filtration time, the muffin layer progressive additive of filter element outer surface causes the pressure drop of filter element to increase, and at this moment needs to adopt the mode of blowback to realize the quality rebuilding of filter element; The direction of blowback air-flow and filtered airflow opposite direction, high pressure blowback air-flow moment enters into the inside of filter element, the muffin layer that relies on the transient energy that produces will be attached to filter element surface is peeled off, so that the state of the resistance of filter element when basically returning to initial filtration, thereby realize the regeneration of filter element performance.
The pulse backblowing mode is the important channel of realizing the filter element circular regeneration, and Pulse anti-blow device is important guarantee and crucial composition of filter stable operation.Shown in Fig. 4 A, be the High Temperature Ceramic Filter of existing commercial Application or the structural representation of high temperature sintering metallic filter and Pulse anti-blow device thereof.The filter tube sheet 94 of described filter 9 is divided into top clean gas chamber and bottom dusty gas chamber with the inner space of ceramic filter; Filter tube sheet 94 is square structure, usually installs tens to hundreds of root filter element 95 on tube sheet 94; Filter element 95 is arranged according to the equidistant mode of ranks on square tube sheet 94, shown in Fig. 4 B; Filter element 95 is divided into some groups take " OK " as unit, and common every row is provided with several to tens filter elements; Pulse anti-blow device mainly is comprised of purge gas storage tank 91, pulse backblowing valve 92, blowback pipeline 93 and nozzle 931; Winding-up pipeline 93 is positioned at the clean gas chamber interior of filter; Every row filter element 95 corresponding winding-up pipelines 93, each winding-up pipeline 93 is provided with a plurality of nozzles 931, corresponding filter element 95 under each nozzle 931; The nozzle 931 of described blowback pipeline 93 keeps certain distance with filter element 95 tops; The technique ash-laden gas is entered into the inside of filter by air inlet pipeline 96, after air-flow arrives filter element 95, the dust granules thing is intercepted at the outer surface of porous filter elements 95, gas then is pooled to the clean gas chamber behind the internal capillary by filter element 95, gas after element 95 filters after filtration is clean gas, and clean gas enters subsequent technique through export pipeline 97.
Dust granules thing in the technique ash-laden gas builds up at the outer surface of filter element 95, carrying out along with filtration time, the dust layer progressive additive of filter element outer surface, the resistance that filters increases, the pressure drop that shows as filter element increases, and when pressure drop is increased to a certain degree, just needs to adopt the mode of pulse backblowing to remove the dust layer that is attached to filter element surface, the dust that is blown off by the blowback air-flow falls into the ash bucket 98 of filter, regularly removes.This process is called the pulse backblowing regenerative process of filter element.
During the pulse backblowing deashing, the pulse backblowing valve 92 that is in normally off opens that (this process duration is very short, be generally 200ms-300ms), the gas that is higher than filter operation pressure twice in the purge gas storage tank 91 (can be compressed air, nitrogen or other purge gas that meets the demands according to technological requirement.Usually, for satisfying the requirement of deashing, the pressure of purge gas will be higher than more than the twice of filter operation pressure) moment by pulse backblowing valve 92 enter the winding-up pipeline 93 in, then by winding-up each nozzle 931 on the pipeline to the very high blowback air-flow (shown in the filled arrows among Fig. 4 A) of filter element 95 internal spray speed, utilize the energy of the transient state of blowback air-flow that the dust layer of filter element 95 outer surfaces is peeled off, realized the quality rebuilding of filter element.
Above-mentioned blowback process divides into groups take " OK " as unit to carry out, after being complete this row filter element of winding-up pipeline 93 blowbacks of the first row pulse backblowing valve 92 correspondences, pulse backblowing valve 92 through the second row behind the certain hour is opened, the filter element of blowback the second row, open through the third line pulse backblowing valve behind the certain hour 92 again, the filter element of blowback the third line ... by that analogy, move in circles.
The injection hole (nozzle) of existing such Pulse anti-blow device is opened on the winding-up pipeline, passes through the delegation's filter element while deashing under pulse jet pipeline of a pulse backblowing valve control during deashing, so be referred to as again the horizontal pulse winding-up.But mainly there is following several problem in the Pulse anti-blow device of this row blowing type that existing industrial filter adopts:
(1) the blowback air-flow is inhomogeneous.
As shown in Figure 5, after high pressure purge gas (among the figure shown in the arrow) enters winding-up pipeline 93, air-flow in the winding-up pipeline flows along a to the b direction, the interior air velocity of pipeline of jetting this moment is very high, the blowback process is a very short transient process of duration, can be compressed in the process that purge gas flows to winding-up pipeline terminal position b, speed and pressure is inhomogeneous in the pipeline that causes jetting; Along blowing direction, the axial velocity of air-flow reduces gradually, static pressure increases gradually, in this process so that gas energy constantly superpose, when causing air-flow by each nozzle 931 ejection, there is very large difference in gas flow, and the throughput of the nozzle 931 of close pulse backblowing valve 92 1 ends is less than the throughput of the nozzle 931 of the equivalent diameter of winding-up pipeline end.Therefore, when 931 pairs of filter elements of nozzle 95 carry out reverse gas cleaning, differ larger from each nozzle blowback air flow out, because stream pressure and the mass flow discrepancy of each nozzle ejection, to cause with in delegation's filter element, corresponding those ejection stream pressures and flow are better than those corresponding stream pressures and flow than the filter element of small nozzle than the suffered deashing energy of the filter element of giant.The filter element that suffered deashing energy is strong is thorough with deashing, and resistance is little behind the deashing, and incomplete deashing can appear in the weak filter element of deashing energy, causes premature failure so that its filtration resistance constantly increases.Along with the filter increase of running time, this inhomogeneous difference can be more and more obvious, finally can affect the monolithic stability operation of filter.
(2) blowback air-flow skewness is serious.
In the pulse dust cleaning winding-up pipeline, along the winding-up airflow direction, dynamic pressure is converted to static pressure gradually, and the nozzle flow velocity also raises gradually, and has certain eccentric angle; Reason is that the interior air velocity of winding-up pipeline is axial, at mouthful place of jetting, produces a radial velocity by static pressure, and speed is synthesized rear its direction and an angle is radially arranged, and therefore can have certain eccentric angle, thereby produces the air-flow skewness of jetting.During pulse dust cleaning, velocity attitude and angle radially are larger, and air-flow is more serious to the impact of filter element.Along winding-up pipeline blowing direction, axial velocity reduces in the pipeline, and static pressure increases, and the terminal axial velocity of injection tube is almost nil.The radial velocity that is produced by differential static pressure increases, and air velocity direction and angle radially also just reduce gradually, and the increase of the interior static pressure of injection tube is conducive to the blowback air-flow and jets vertically downward.Therefore, this " a winding-up pipeline is provided with the structure of a plurality of nozzles ", there is skewness in various degree in the air-flow that causes each nozzle to spray, and the closer to the nozzle of pulse backblowing valve one end, the air-flow skewness during its blowback is more serious.When skewness occurs, can not enter filter element inside fully from the pulse backblowing air-flow of nozzle after out, affect ash-removal effect, the air-flow that the winding-up pipeline sprays tilts, will cause the deflection air-flow that the brute force of filter element is impacted, affect the normal service life of filter element.
(3) deashing intensity and the cleaning efficiency of blowback air-flow are low.
Ash-removal effect mainly is reflected on deashing intensity and the cleaning efficiency; Pressure peak, rate of pressure rise in the filter element is two important indicators weighing ash-removal effect.Pressure peak refers to pulse jet moment, the maximum pressure that the deashing air-flow of back-blowing device ejection produces; When rate of pressure rise referred to jet, certain point pressure peak value and pressure were from the ratio that is raised to peak value institute elapsed-time standards above freezing in the filter element.Pressure peak is high, and rate of pressure rise is favourable to ash-removal effect soon.
The ash-removal effect of pulse backblowing is determined by the energy of the gas of each nozzle ejection.During pulse backblowing, except " jet " of depending nozzle ejection, " secondary drainage " that produces when also needing an air-flow high-speed motion, described secondary drainage depends on the energy size of a jet, the gas energy of the two generation enters filter element inside jointly, finishes the reverse gas cleaning operation.
This multi-jet project organization in the prior art, " amount of jet " of each nozzle is less, clean gas more around can not induction nozzle forms the deashing air-flow, " secondary drainage " of its generation is very limited, so can not make pressure peak and rate of pressure rise in the filter element arrive higher value, therefore intensity and the cleaning efficiency of reverse gas cleaning are all undesirable, affect the effect of pulse backblowing deashing.Simultaneously, because the blowback air-flow directly enters the inside of filter element, there are certain temperature difference in the temperature of purge gas and the temperature of filter operation, so easily filter element is caused larger thermal shock, will cause filter element the situations such as fatigue failure and fracture to occur when serious.
Thus, the inventor relies on experience and the practice of being engaged in for many years relevant industries, proposes a kind of pulse backblowing deashing device with telescopic injection tube, to overcome the defective of prior art.
The utility model content
The purpose of this utility model is to provide a kind of pulse backblowing deashing device with telescopic injection tube, the problem such as air-flow deflection during in the hope of the maldistribution that overcomes blowback air-flow in the prior art and blowback, thus cleaning efficiency and the blowback intensity of pulse backblowing increased.
Another purpose of the present utility model is to provide a kind of pulse backblowing deashing device with telescopic injection tube, and it arranges the throughput that gas ejector can significantly increase secondary injection, and can reduce purge gas to the thermal shock of filter element.
The purpose of this utility model is to realize like this, a kind of pulse backblowing deashing device with telescopic injection tube, described pulse backblowing deashing device is arranged on the top of filter, the tube sheet of described filter is provided with multirow and is the filter element that longitudinal separation is arranged, and is provided with mutually the on the same group filter element of number and interval setting in every row; The corresponding every group of filter element of tube sheet upside is provided with a gas ejector; The filter tube sheet is divided into the clean gas chamber on top and the dusty gas chamber of bottom with filter seal; Described pulse backblowing deashing device includes top and the corresponding a plurality of winding-up pipelines that be arranged in parallel with each row filter element that are horizontally set on filter; The described pipeline bottom side of respectively jetting is provided with a plurality of nozzles, and described nozzle is by the filter top end section of inserting into the inner and fixing, and each nozzle is arranged on the gas ejector top of corresponding filter element; The described pipeline of respectively jetting is communicated in a blowback air accumulator by the pulse backblowing valve of a correspondence respectively separately; The inner and outer tubes that described each injection tube route sealed sliding is established consist of; Described nozzle is arranged on the outer tube, and the tube wall bottom side of described inner tube end is provided with an injection hole, and the other end of described inner tube is connected with the pulse backblowing valve by air supply pipe.
In a preferred embodiments of the present utility model, comprise at least a filter element in described every group of filter element.
In a preferred embodiments of the present utility model, described filter element is the rigid filter element; Described rigid filter element is ceramic chimney filter or sintering metal chimney filter.
In a preferred embodiments of the present utility model, the inner tube external diameter of described winding-up pipeline is identical with outer tube diameter, and described inner tube and outer tube are matched in clearance.
In a preferred embodiments of the present utility model, the diameter of described injection hole is identical with the diameter of nozzle.
In a preferred embodiments of the present utility model, described blowback air accumulator is arranged on the axially movable straight line mobile device of outer tube.
In a preferred embodiments of the present utility model, described linear moving apparatus is made of a slideway.
In a preferred embodiments of the present utility model, described linear moving apparatus reaches mobile in orbit wheel seat by a track and consists of; Described blowback air accumulator is arranged on the described wheel seat.
In a preferred embodiments of the present utility model, described gas ejector from top to bottom order includes infundibulate air inlet, cylindrical changeover portion, flaring cone body section and rectangle bottom; Described flaring cone body section upper end is connected with cylindrical changeover portion, and the lower end is connected with the rectangle bottom.
From the above mentioned, the utility model with the pulse backblowing deashing device of telescopic injection tube in the pulse backblowing deashing process, move as axial stretching with respect to outer tube by the inner tube in the control winding-up pipeline, guarantee at synchronization, injection hole on the inner tube only with outer tube on the corresponding coincidence of a nozzle, and only by the gas ejector winding-up gases at high pressure of this nozzle to correspondence, flowed energy is concentrated and is acted on filter element corresponding to this gas ejector, can overcome the inhomogeneous defective of blowback air-flow in the prior art, cleaning efficiency and blowback intensity are increased greatly; Simultaneously, in the situation of only having a nozzle winding-up, the inner tube of winding-up pipeline is equivalent to a plenum chamber, air-flow is with automatic guiding when therefore jetting, the phenomenon of air-flow deflection of the prior art can not occur, deflection air-flow when having reduced blowback can improve the service life of rigid filter element thus to the impact of filter element.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein:
Figure 1A: be the structural representation of the utility model with the pulse backblowing deashing device of telescopic injection tube.
Figure 1B: the structural representation that arranges at tube sheet for filter element in the utility model.
Fig. 2: be the structural representation of telescopic winding-up pipeline in the utility model.
Fig. 3: be the structural representation of gas ejector in the utility model.
Fig. 4 A: be the High Temperature Ceramic Filter of existing commercial Application or the structural representation of high temperature sintering metallic filter and Pulse anti-blow device thereof.
Fig. 4 B: be the arrangement mode schematic diagram on tube sheet of filter element in the prior art.
Fig. 5: be the structural representation of winding-up pipeline in the prior art.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.
Shown in Figure 1A, the utility model proposes a kind of pulse backblowing deashing device 100 with telescopic injection tube, described pulse backblowing deashing device 100 is arranged on the top of filter 200, the tube sheet 21 of described filter 200 is provided with multirow and is the filter element 22 that longitudinal separation is arranged, and is provided with mutually the on the same group filter element of number and interval setting in every row; The corresponding every group of filter element 22 of tube sheet 21 upsides is provided with a gas ejector 23; Filter tube sheet 21 is divided into the clean gas chamber 24 on top and the dusty gas chamber 25 of bottom with filter seal, and dusty gas chamber 25 is provided with ash-laden gas import 26, and clean gas chamber 24 is provided with clean gas outlet 27, and filter bottom is provided with ash bucket 28; Described pulse backblowing deashing device 100 include the top that is horizontally set on filter 100 and with each row filter element 22 corresponding a plurality of winding-up pipeline 11 that be arranged in parallel; Described pipeline 11 bottom sides of respectively jetting are provided with a plurality of nozzles 1121, and described nozzle 1121 is by the filter 100 top sections of inserting into the inner and fixing, and each nozzle 1121 is arranged on gas ejector 23 tops of corresponding filter element 22; The described pipeline 11 of respectively jetting is communicated in a blowback air accumulator 13 by the pulse backblowing valve 12 of a correspondence respectively separately; As shown in Figure 2, inner tube 111 and the outer tube 112 established by sealed sliding of the described pipeline 11 of respectively jetting consists of; Described nozzle 1121 is arranged on the outer tube 112, and the tube wall bottom side of described inner tube 111 ends is provided with an injection hole 1111, and the other end of described inner tube 111 is connected with pulse backblowing valve 12 by air supply pipe 14.In the present embodiment, in described every group of filter element 22 one or more filter element 221 can be set, many filter elements 221 can be by square region setting (as shown in Figure 1B), also can be by circle or elliptical region setting; Described filter element 221 is ceramic chimney filter or porous sintered metal chimney filter.
Shown in Figure 1A, the high-temperature technology ash-laden gas is entered into the inside of filter 100 by ash-laden gas import 26, after dust-contained airflow arrives filter element 221, by the mode of filtering, the dust granules thing is intercepted at the outer surface of porous filter elements 221, and gas then by the internal capillary of filter element 221, is pooled to clean gas chamber 24 through behind the gas ejector 23, gas after element 221 filters after filtration is clean gas, and clean gas enters subsequent technique through clean gas outlet 27.Because the dust layer thickness of filter element surface increases, cause the resistance of filter element 221 to increase, when resistance increment arrives to a certain degree, need to use the pulse backblowing deashing device to carry out deashing, the muffin on filter element 221 surfaces is peeled off, make its quality rebuilding.When the pulse backblowing deashing, the inner tube 111 of control winding-up pipeline 11 moves axially along outer tube 112, make inner tube 111 every at regular intervals distances of a mobile appointment, the spacing of adjacent two nozzles 1121 equates on the distance of described this appointment and the outer tube 112, after the distance of an appointment of every like this movement, described injection hole 1111 is overlapped in order with each nozzle 1121; This injection hole 1111 of supposing inner tube 111 ends this moment aligns with the nozzle 1121 of outer tube end (high order end among Fig. 2) and overlaps, the pulse backblowing valve 12 that is in normally off is opened, gases at high pressure in the blowback air accumulator 13 are through entering in the inner tube 111 of winding-up pipeline 11 after winding-up pipeline air supply pipe 14 and the pulse backblowing valve 12, ejection after the injection hole 1111 of inner tube 111 enters this nozzle 1121, under the jet action of purge gas at a high speed and under the drainage of gas ejector 23, jet and a large amount of secondary gas flow enter in the gas ejector 23, after in gas ejector 23, carrying out diffusion and rectification, enter the inside of filter element 221, the transient energy of utilizing purge gas to produce is peeled off the muffin layer of filter element 221 outer surfaces, realizes filter element 221 quality rebuildings.Injection hole 1111 because jet this moment on the inner tube 111 of pipeline 11 does not overlap with other nozzles 1121, so so that all air-flows in the inner tube 111 can only from a nozzle 1121 of outer tube end, spray, all flowed energies are concentrated and are applied to the filter element corresponding with this nozzle 22, and cleaning efficiency and blowback intensity are increased greatly.Through behind the certain hour, the inner tube 111 of winding-up pipeline 11 is the distance of a mobile appointment again, at this moment another nozzle 1121 corresponding coincidences adjacent with the terminal nozzle of outer tube of the injection hole 1111 on the inner tube 111, this group filter element 22 is carried out the pulse backblowing deashing, deashing process is same as described above, by that analogy, move in circles, all finish the pulse backblowing deashing process until respectively organize filter element 22.
From the above mentioned, the utility model with the pulse backblowing deashing device of telescopic injection tube in the pulse backblowing deashing process, move as axial stretching with respect to outer tube by the inner tube in the control winding-up pipeline, guarantee at synchronization, injection hole on the inner tube only with outer tube on the corresponding coincidence of a nozzle, and only by the gas ejector winding-up gases at high pressure of this nozzle to correspondence, flowed energy is concentrated and is acted on filter element corresponding to this gas ejector, can overcome the inhomogeneous defective of blowback air-flow in the prior art, cleaning efficiency and blowback intensity are increased greatly; Simultaneously, in the situation of only having a nozzle winding-up, the inner tube of winding-up pipeline is equivalent to a plenum chamber, and air-flow with automatic guiding the phenomenon of air-flow deflection of the prior art can not occur when therefore jetting, and can improve thus the service life of rigid filter element.
Further, in the present embodiment, inner tube 111 external diameters of described winding-up pipeline 11 are identical with outer tube 112 internal diameters, described inner tube 111 is matched in clearance with outer tube 112, inner tube 111 and outer tube 112 are provided with sealing ring near the link position of pulse backblowing valve 12 1 sides, to guarantee the seal request in sliding process; When inner tube moved, inner tube 111 can directly not contact the inner surface of outer tube 112, can reduce friction the gas leak phenomenon when avoiding blowback simultaneously between the inner and outer tubes.
In the present embodiment, the diameter of described injection hole 1111 is identical with the diameter of nozzle 1121; Shown in Figure 1A, described each blowback air accumulator 13 is arranged on outer tube 112 axially movable straight line mobile devices 15.In the present embodiment, each winding-up pipeline 11 a corresponding pulse backblowing valve 12 and purge gas air supply pipe 14, each winding-up pipeline 11 is provided with separately a blowback air accumulator 13 and linear moving apparatus 15.
Described linear moving apparatus 15 can be made of a slideway, and described each blowback air accumulator 13 is set directly on this slideway, and is moved the distance of an appointment by control by the certain hour interval.
Shown in Figure 1A, in the another embodiment of present embodiment, described linear moving apparatus 15 also can consist of by a track 151 and at track 151 mobile wheel seats 152; Described blowback air accumulator 13 is arranged on the described wheel seat 152; Described wheel seat 152 is regulated (not shown) by a control system, can control accurately the distance that horizontal direction moves.
As shown in Figure 3, in the present embodiment, described gas ejector 23 from top to bottom order includes infundibulate air inlet 231, cylindrical changeover portion 232, flaring cone body section 233 and rectangle bottom 234; Described flaring cone body section 233 upper ends are connected with cylindrical changeover portion 232, and the lower end is connected with rectangle bottom 234.Tapered air inlet and flaring tapering part be owing to adopted columniform changeover portion, reduced the irreversible loss in jet and the secondary drainage mixed process, effectively increased energy and momentum-exchange between the two; In diffuser, the kinetic transformation of fluid-mixing is pressure energy, and the diffusion of the injector outlet fully deashing air-flow of the complete energy of mixture and exchange evenly distributes and is delivered to filter element, reaches ash-removal effect; Simultaneously the deashing kinetic energy of filter element is evenly distributed, reduce the thermal shock of deashing air-flow, be conducive to prolong the service life of filter element.
The utility model compared with prior art has the following advantages with the pulse backblowing deashing device of telescopic injection tube:
1. overcome the inhomogeneous phenomenon of blowback air-flow.
The inhomogeneous phenomenon of blowback air-flow during for the back-blowing device deashing of " piece a winding-up pipeline on have a plurality of injection holes " in the prior art, the utility model is started with from the structure of winding-up pipeline, propose a kind of Pulse anti-blow device with telescopic injection tube, fundamentally solved this problem.Simultaneously, the arrangement mode that filter element in the filter of the prior art is divided into groups according to " OK ", proposed filter element is arranged in the arrangement mode that a plurality of square region are divided into groups, synchronization only has a nozzle to the gas ejector winding-up gases at high pressure of correspondence, flowed energy can be concentrated and act on filter element corresponding to this gas ejector, is conducive to the long-term stability operation of filter.
2. air-flow deflection when avoiding blowback occurs.
Synchronization only has in the situation of a nozzle winding-up, the inner tube of winding-up pipeline is equivalent to a plenum chamber, air-flow is with automatic guiding during winding-up, the phenomenon of air-flow deflection of the prior art can not occur, air-flow deflection when having reduced blowback is to the thermal shock of filter element, so the service life that can improve the rigid filter element.
3. improve deashing intensity and the cleaning efficiency of blowback air-flow.
The utility model arranges gas ejector above filter element, compared to existing technology, Pulse anti-blow device of the present utility model flowed energy owing to a jet when blowback is high, and injector can increase the tolerance of secondary drainage, make jet air-flow and secondary drainage from nozzle enter together the gas ejector air inlet, through in main paragraph, carrying out diffusion and rectification behind the changeover portion, then enter filter element inside, can improve largely pressure peak and rate of pressure rise in the filter element when finishing the operation of the reverse gas cleaning of filter element.Therefore, can improve deashing intensity and the cleaning efficiency of blowback air-flow; Simultaneously, because the secondary drainage effect of injector, so that energy and the temperature of purge gas in injector mixes the temperature difference when having reduced the operation of purge gas and filter element, therefore can reduce the thermal shock of deashing air-flow, be conducive to prolong filter element service life.
The above only is the schematic specific embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (9)
1. pulse backblowing deashing device with telescopic injection tube, it is characterized in that: described pulse backblowing deashing device is arranged on the top of filter, the tube sheet of described filter is provided with multirow and is the filter element that longitudinal separation is arranged, and is provided with mutually the on the same group filter element of number and interval setting in every row; The corresponding every group of filter element of tube sheet upside is provided with a gas ejector; The filter tube sheet is divided into the clean gas chamber on top and the dusty gas chamber of bottom with filter seal; Described pulse backblowing deashing device includes top and the corresponding a plurality of winding-up pipelines that be arranged in parallel with each row filter element that are horizontally set on filter; The described pipeline bottom side of respectively jetting is provided with a plurality of nozzles, and described nozzle is by the filter top end section of inserting into the inner and fixing, and each nozzle is arranged on the gas ejector top of corresponding filter element; The described pipeline of respectively jetting is communicated in a blowback air accumulator by the pulse backblowing valve of a correspondence respectively separately; The inner and outer tubes that described each injection tube route sealed sliding is established consist of; Described nozzle is arranged on the outer tube, and the tube wall bottom side of described inner tube end is provided with an injection hole, and the other end of described inner tube is connected with the pulse backblowing valve by air supply pipe.
2. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 1 is characterized in that: comprise at least a filter element in described every group of filter element.
3. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 2, it is characterized in that: described filter element is the rigid filter element; Described rigid filter element is ceramic chimney filter or sintering metal chimney filter.
4. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 1, it is characterized in that: the inner tube external diameter of described winding-up pipeline is identical with outer tube diameter, and described inner tube and outer tube are matched in clearance.
5. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 1, it is characterized in that: the diameter of described injection hole is identical with the diameter of nozzle.
6. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 1, it is characterized in that: described blowback air accumulator is arranged on the axially movable straight line mobile device of outer tube.
7. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 6, it is characterized in that: described linear moving apparatus is made of a slideway.
8. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 6 is characterized in that: described linear moving apparatus by a track and in orbit mobile wheel seat consist of; Described blowback air accumulator is arranged on the described wheel seat.
9. the pulse backblowing deashing device with telescopic injection tube as claimed in claim 1 is characterized in that: described gas ejector from top to bottom order includes infundibulate air inlet, cylindrical changeover portion, flaring cone body section and rectangle bottom; Described flaring cone body section upper end is connected with cylindrical changeover portion, and the lower end is connected with the rectangle bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338961 CN202700281U (en) | 2012-07-12 | 2012-07-12 | Pulse back-blowing ash removal device with telescopic blowing pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338961 CN202700281U (en) | 2012-07-12 | 2012-07-12 | Pulse back-blowing ash removal device with telescopic blowing pipe |
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| CN202700281U true CN202700281U (en) | 2013-01-30 |
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| CN 201220338961 Expired - Lifetime CN202700281U (en) | 2012-07-12 | 2012-07-12 | Pulse back-blowing ash removal device with telescopic blowing pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728161A (en) * | 2012-07-12 | 2012-10-17 | 中国石油大学(北京) | Pulse reverse-blowing ash-removing device with flexible blowing pipes |
| CN109621569A (en) * | 2019-01-10 | 2019-04-16 | 中国石油大学(北京) | From tuning recurrent pulses jet nozzle and filter |
| CN111841115A (en) * | 2020-08-10 | 2020-10-30 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
-
2012
- 2012-07-12 CN CN 201220338961 patent/CN202700281U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728161A (en) * | 2012-07-12 | 2012-10-17 | 中国石油大学(北京) | Pulse reverse-blowing ash-removing device with flexible blowing pipes |
| CN109621569A (en) * | 2019-01-10 | 2019-04-16 | 中国石油大学(北京) | From tuning recurrent pulses jet nozzle and filter |
| CN109621569B (en) * | 2019-01-10 | 2024-02-02 | 中国石油大学(北京) | Self-direction-regulating periodic pulse jet nozzle and filter |
| CN111841115A (en) * | 2020-08-10 | 2020-10-30 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
| CN111841115B (en) * | 2020-08-10 | 2021-09-21 | 浙江独山能源有限公司 | Novel metal sintering filter cleaning device |
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