CN112717570B - Air filter blowback recovery performance detection system and detection method - Google Patents
Air filter blowback recovery performance detection system and detection method Download PDFInfo
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- CN112717570B CN112717570B CN202011479684.XA CN202011479684A CN112717570B CN 112717570 B CN112717570 B CN 112717570B CN 202011479684 A CN202011479684 A CN 202011479684A CN 112717570 B CN112717570 B CN 112717570B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0086—Filter condition indicators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/442—Auxiliary equipment or operation thereof controlling filtration by measuring the concentration of particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention provides a system and a method for detecting the back-blowing recovery performance of an air filter, wherein the system for detecting the back-blowing recovery performance of the air filter comprises a back-blowing pipeline and a back-blowing device; the inner cavity of the back flushing pipeline is used for arranging a filter; the back flushing device comprises an air inlet pipeline and a pulse valve; the inlet end of the air inlet pipeline is used for accessing compressed air, and the outlet end of the air inlet pipeline penetrates through the side wall of the downstream pipe barrel and faces the filter along the axis of the back flushing pipeline; a first counter and a second counter are arranged on the back flushing pipeline; the first counter is arranged in the upstream pipe barrel, and the second counter is arranged in the downstream pipe barrel; the outlet end of the positive blowing pipeline is communicated with the inlet end of the upstream pipe barrel. The system and the method for detecting the back blowing recovery performance of the air filter utilize the back blowing device to carry out back blowing on the filter arranged in the back blowing pipeline, can obtain the change curve of the resistance of the upstream and the downstream of the filter, and are convenient for analyzing the filtering efficiency and the service life of the filter under different dust containing concentrations.
Description
Technical Field
The invention relates to the technical field of gas turbine air quality assurance systems, in particular to a system and a method for detecting the blowback recovery performance of an air filter.
Background
The gas turbine air inlet system must be provided with a filtering device, and the filtering efficiency and the service performance of the filtering device play an important role in guaranteeing the normal operation of the gas turbine. Therefore, the performance test and the performance guarantee in use of the filtering device are very critical.
In the existing gas turbine air intake system, a filter to be tested, such as a filter plate or a filter screen, is usually clamped and fixed at the middle section of a pipeline, and the air passing through the pipeline is ensured to completely pass through the filter. In the work, according to experiment amount of wind demand, open different nozzles in the pipeline, calculate according to instrument real-time measurement's nozzle front and back pressure differential simultaneously and obtain real-time amount of wind, feed back real-time amount of wind to control system, utilize control system control pipeline main blower's rotational frequency to reach the required amount of wind of experiment.
After the air volume of the system is stable, generating dust or aerosol into the pipeline at a constant speed by using an artificial dust generator or an aerosol generator at the upstream side of the pipeline according to detection requirements. And after the dust concentration or the aerosol concentration in the air in the pipeline is stable, measuring the dust concentration or the aerosol concentration in the air in the upstream pipeline and the downstream pipeline, and simultaneously measuring the pressure difference before and after the measured filter by using an instrument to obtain a resistance change curve. Finally, the filtering efficiency, the dust holding capacity of the tested piece and the like can be calculated according to the measured data such as the particle concentration, the resistance curve and the like on the upstream and the downstream of the filter.
However, in the testing process, the dust holding capacity of the filter gradually increases, and the conditions that the particle concentration of the upstream and downstream of the filter is kept constant and the resistance of the filter is constant often occur, so that the test data is inaccurate and the performance of the filter is not correctly reflected.
Disclosure of Invention
The invention aims to provide a system and a method for detecting the blowback restoration performance of an air filter, which are helpful for solving the technical problems.
The invention is realized in the following way:
a kind of air filter blowback recovery performance detection system, it includes blowing pipeline, blowback pipeline and blowback device; the inner cavity of the back flushing pipeline is used for arranging a filter, the filter divides the back flushing pipeline into an upstream pipe barrel and a downstream pipe barrel, and the upstream pipe barrel is communicated with the downstream pipe barrel through the filter; the back flushing device comprises an air inlet pipeline and a pulse valve arranged on the air inlet pipeline; the inlet end of the air inlet pipeline is used for connecting compressed gas, and the outlet end of the air inlet pipeline penetrates through the side wall of the downstream pipe barrel and faces the filter; a first counter and a second counter are arranged on the back flushing pipeline; the first counter is disposed in the upstream barrel and the second counter is disposed in the downstream barrel; the outlet end of the forward blowing pipeline is communicated with the inlet end of the upstream barrel.
Above-mentioned air cleaner blowback resilience performance detecting system is when using, the dust concentration of simulation nature raise dust weather earlier, utilizes forward air current to hold the dirt to be surveyed the filter in the blowback pipeline and sweeps, treats that the filter front and back resistance is no longer obvious increase (hang full dust promptly), recycles the blowback device and carries out reverse air current to the filter and sweep, at this in-process, continuously measures the resistance change along with time around the filter. The data measured by the experiment can be used for analyzing the filtering efficiency and the service life of the filter under different natural dust containing concentrations. In the process, the dust containing amount of the filter comprises a gradually increasing process and a gradually decreasing process, and the high-frequency opening and closing of the pulse valve has a more obvious back flushing effect on the filter. The concentration of particles on the upstream and downstream of the filter can be ensured to be increased and decreased on a linear basis, the resistance of the filter is changed along with the linear variation, the accuracy of test data is greatly improved, and the test result accurately reflects the filtering performance of the filter. Wherein, the filter can select a filter cylinder or a filter plate according to the requirement.
Furthermore, the back-blowing device also comprises an air storage tank; the air storage tank is communicated with the inlet end of the air inlet pipeline. The technical effects are as follows: compared with the direct conduction air compressor, the air storage tank provides stable high-pressure airflow, and has obvious promotion effect on obtaining accurate test results.
Further, the back flushing device also comprises a pressure regulating valve; the pressure regulating valve is arranged on the air inlet pipeline and is positioned between the pulse valve and the air storage tank. The technical effects are as follows: the pressure regulating valve can change the pressure and the speed of the back flushing air flow, so that the air storage tanks with different pressures can meet the requirements of a back flushing test for a long time.
Furthermore, the quantity of gas holder is a plurality of, and is a plurality of after the gas holder communicates in proper order with the entry end intercommunication of air inlet pipe way. The technical effects are as follows: the plurality of air storage tanks are sequentially communicated, so that the reverse blowing airflow is further stable.
Furthermore, the back flushing device also comprises an air compressor; the air compressor is in communication with the air reservoir furthest from the air intake line. The technical effects are as follows: the air compressor supplies compressed air to the air supply pipeline through the last air storage tank, so that sufficient supply of air flow is guaranteed, and the condition that the pressure of back-flushing air flow is unstable is prevented.
Furthermore, a dust generating device is arranged on the back flushing pipeline; the dust generating device is arranged in the upstream pipe barrel and is located upstream of the first counter. The technical effects are as follows: the dust generating device is used for supplementing dust particles in a back flushing pipeline and improving the dust concentration in the air so as to avoid the insufficient dust concentration of the filter after being swept by air flow in the positive direction and the negative direction.
Further, the axis of the positive blowing pipeline is perpendicular to the axis of the back blowing pipeline. The technical effects are as follows: when the forward blowing pipeline and the back blowing pipeline are perpendicular to each other, a structure that the forward blowing pipeline on the upstream is horizontal and the back blowing pipeline on the downstream is vertical upwards can be formed, and the design structure can utilize the change of the airflow direction and the gravity action of dust per se to enhance the airflow back blowing effect.
A method for detecting the blowback restoration performance of an air filter comprises the following steps:
generating dust raising airflow flowing from a forward blowing pipeline to a reverse blowing pipeline; and step two, generating dust raising airflow flowing from the back blowing pipeline to the forward blowing pipeline by using a back blowing device, and counting the numerical value of the first counter and the numerical value of the second counter.
Further, in the first step, the air pressure difference value between the upstream pipe barrel and the downstream pipe barrel is measured, and when the air pressure difference value is constant, the generation of the dust raising airflow flowing from the back blowing pipeline to the forward blowing pipeline is stopped. The technical effects are as follows: when the air pressure difference value is constant, the filter is full of dust. And after the time point is determined, the filter is subjected to back flushing, and limit data of the filter can be obtained.
Further, prior to step one, the size of the pulsing valve is adjusted. The technical effects are as follows: the size and frequency of the pulse valve are adjusted according to different filters so as to meet the measurement requirements of different types of filters.
The beneficial effects of the invention are:
the system and the method for detecting the back-blowing recovery performance of the air filter firstly carry out forward dust blowing, and then carry out reverse blowing on the filter arranged in a back-blowing pipeline by using the back-blowing device, so that the change curves of the upstream resistance and the downstream resistance of the filter can be obtained, the conditions of constant particle concentration, constant filter resistance and the like of the upstream resistance and the downstream resistance of the filter in the test process are prevented, the test data of the filter is accurately obtained, and the filtering performance of the filter is accurately reflected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
FIG. 1 is a schematic diagram of a first structure of a system for detecting a blowback recovery performance of an air filter according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second structure of a system for detecting a blowback recovery performance of an air filter according to a first embodiment of the present invention;
FIG. 3 is a schematic control flow chart illustrating a first method for detecting a blowback recovery performance of an air filter according to a second embodiment of the present invention;
fig. 4 is a schematic control flow chart of a second method for detecting a blowback recovery performance of an air filter according to a second embodiment of the present invention.
Icon: 100-a blowback pipeline; 110-an upstream barrel; 120-a downstream barrel; 130-end screen; 200-a filter; 310-an air intake conduit; 320-a pulse valve; 330-pressure regulating valve; 340-a gas storage tank; 350-an air compressor; 400-a dust generating device; 510-a first counter; 520-a second counter; 600-forward blowing of the pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention that are generally described and illustrated in the figures can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The first embodiment:
FIG. 1 is a schematic diagram of a first structure of a system for detecting a blowback recovery performance of an air filter according to a first embodiment of the present invention; fig. 2 is a schematic structural diagram of a second structure of a system for detecting a blowback recovery performance of an air filter according to a first embodiment of the present invention. Referring to fig. 1 and fig. 2, the present embodiment provides a system for detecting a blowback recovery performance of an air filter, which includes a forward blowing pipe 600, a blowback pipe 100, and a blowback device; the inner cavity of the blowback pipeline is used for arranging a filter 200, the filter 200 divides the blowback pipeline into an upstream pipe barrel 110 and a downstream pipe barrel 120, and the upstream pipe barrel 110 is communicated with the downstream pipe barrel 120 through the filter 200; the blowback device comprises an air inlet pipeline 310 and a pulse valve 320 arranged on the air inlet pipeline 310; the inlet end of the air inlet pipeline 310 is used for receiving compressed air, and the outlet end of the air inlet pipeline 310 penetrates through the side wall of the downstream pipe barrel 120 and faces the filter 200 along the axial direction of the blowback pipeline 100; a first counter 510 and a second counter 520 are arranged on the blowback pipeline; a first counter 510 is disposed in the upstream barrel 110, and a second counter 520 is disposed in the downstream barrel 120; the outlet end of the belly duct 600 communicates with the inlet end of the upstream barrel 110.
In the above-described configuration, the pulse valve 320 may be a pneumatic high-speed pulse valve 320, which is opened and closed once for a time period not exceeding 0.05 second, and the high-speed pulse valve 320 door of japan SMC corporation, purchased by the applicant under test, has a maximum operation period of 0.034 seconds and less than 0.05 second, and satisfies the use requirements. In addition, pneumatic high-speed pulse valve 320 is connected according to experimental demand, three pipeline side by side of preliminary working, and the nozzle can be changed according to the demand of being surveyed the piece, and this section can be dismantled the section for threaded connection.
The working principle and the operation method of the air filter blowback recovery performance detection system of the embodiment are as follows:
when the air filter blowback resilience performance detecting system is in use, simulate the dust concentration of natural raise dust weather earlier, utilize forward air current to hold the dirt to be surveyed filter 200 and sweep in blowback pipeline 100, treat that filter 200 front and back resistance no longer obviously increases (hang full dust promptly), reuse blowback device to carry out reverse air current to filter 200 and sweep, at this in-process, the resistance of continuous measurement filter 200 front and back changes along with time. The experimentally measured data can be used to analyze the filtration efficiency and service life of the filter 200 at different natural dust holding concentrations. In the above process, the dust holding capacity of the filter 200 includes a gradual increasing process and a gradual decreasing process, and the high-frequency opening and closing of the pulse valve 320 has a more obvious back-flushing effect on the filter 200. The concentration of particles on the upstream and downstream of the filter 200 can be increased and decreased linearly, the resistance of the filter 200 is changed linearly, the accuracy of test data is greatly improved, and the test result accurately reflects the filtering performance of the filter 200. The filter 200 may be a filter cartridge or a filter plate, as required.
On the basis of the above embodiments, optionally, as shown in fig. 1 and fig. 2, the blowback device further includes an air storage tank 340; the air reservoir 340 communicates with the inlet end of the air intake conduit 310.
The number of the air storage tanks 340 is multiple, and the multiple air storage tanks 340 are communicated with the inlet end of the air inlet pipeline 310 sequentially.
On the basis of the above embodiments, optionally, as shown in fig. 1 and fig. 2, the blowback device further includes an air compressor 350; the air compressor 350 communicates with the air reservoir 340 furthest from the air intake line 310. Wherein, the air compressor 350 can adopt a conventional compressor, and the requirement of providing 0.8Mpa compressed air is met.
On the basis of the above embodiments, optionally, as shown in fig. 1 and fig. 2, the blowback device further includes a pressure regulating valve 330; the pressure regulating valve 330 is disposed on the air intake line 310 between the pulsing valve 320 and the air reservoir 340. The pressure regulating valve 330 can be a manual pressure regulating valve 330, and the range of the back-blowing output air pressure can be adjusted to be between 0.01MPa and 0.8 MPa.
In the above structure, in consideration of the requirement for stable air pressure during high-speed pulse switching, a high-displacement variable-frequency screw compressor is selected, and a two-stage air storage tank 340 is connected in series with a downstream pipeline, and a precise manual pressure regulating valve of the SMC brand known in the pneumatic field is selected for pressure regulation, so that the stable air pressure during the operation of the pulse valve 320 is ensured as much as possible.
On the basis of the above embodiments, as shown in fig. 1 and fig. 2, optionally, a dust generating device 400 is disposed on the blowback pipeline 100; the dust generating device 400 is disposed in the upstream pipe 110 and is located upstream of the first counter 510. Wherein, the dust generating device 400 is required to generate dust with the concentration of 50-1000 mg/cubic meter (under the condition of 50-5000 air volume), and a dust generator with the maximum dust generating mass of the dust generating device 400 meeting 5 kg/hour is selected.
On the basis of the above embodiments, optionally, as shown in fig. 1 and fig. 2, the blowback pipeline 100 is provided with a terminal filter 130; an end screen 130 is disposed at the outlet end of the downstream tube 120.
On the basis of the above embodiments, optionally, as shown in fig. 1 and fig. 2, the axis of the positive blow pipe 600 and the axis of the back blow pipe 100 are perpendicular to each other. At this time, a plurality of vertical dust generating ports of the dust generating device 400 are reserved for measuring the influence of the self weight of the large-concentration dust on the upstream concentration.
In addition, a dust removing door can be arranged on one side of the back blowing pipeline 100 close to the ground for cleaning dust in the pipeline after the test.
The second embodiment:
FIG. 3 is a schematic control flow chart of a first method for detecting a blowback recovery performance of an air filter according to a second embodiment of the present invention; fig. 4 is a schematic control flow chart of a second method for detecting a blowback recovery performance of an air filter according to a second embodiment of the present invention. Referring to fig. 3 and 4, the present embodiment provides a method for detecting a blowback recovery performance of an air filter, which includes the following steps:
firstly, a dust raising airflow flowing from the forward blowing pipeline 600 to the reverse blowing pipeline 100 is generated.
And step two, generating dust raising airflow flowing from the blowback pipeline 100 to the forward blowing pipeline 600 by using a blowback device, and counting the value of the first counter 510 and the value of the second counter 520.
Further, in the first step, the air pressure difference between the upstream pipe 110 and the downstream pipe 120 is measured, and when the air pressure difference is constant, the generation of the dust-laden air flow from the blowback pipe 100 to the forward blowing pipe 600 is stopped. In the process, when the air pressure difference is constant, the filter 200 is full of dust. After the time point is determined, the filter 200 is subjected to back flushing, and limit data of the filter 200 can be obtained.
Further, prior to step one, the size of the pulsing valve 320 is adjusted. The size and frequency of the pulsing valves 320 are adjusted for different filters 200 to meet the measurement requirements of different types of filters 200.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A system for detecting the back-blowing recovery performance of an air filter is characterized by comprising a forward-blowing pipeline (600), a back-blowing pipeline (100) and a back-blowing device; the inner cavity of the blowback pipeline (100) is used for arranging a filter (200), the filter (200) divides the blowback pipeline (100) into an upstream pipe barrel (110) and a downstream pipe barrel (120), and the upstream pipe barrel (110) is communicated with the downstream pipe barrel (120) through the filter (200); the blowback device comprises an air inlet pipeline (310) and a pulse valve (320) arranged on the air inlet pipeline (310); the inlet end of the air inlet pipeline (310) is used for receiving compressed gas, and the outlet end of the air inlet pipeline (310) penetrates through the side wall of the downstream pipe barrel (120) and faces to the filter (200);
a first counter (510) and a second counter (520) are arranged on the blowback pipeline (100); the first counter (510) is disposed in the upstream barrel (110) and the second counter (520) is disposed in the downstream barrel (120);
the outlet end of the forward blowing pipeline (600) is communicated with the inlet end of the upstream cylinder (110);
the back flushing device also comprises an air storage tank (340); the air storage tank (340) is communicated with the inlet end of the air inlet pipeline (310);
the blowback device also comprises a pressure regulating valve (330); the pressure regulating valve (330) is arranged on the air inlet pipeline (310) and is positioned between the pulse valve (320) and the air storage tank (340);
the axial line of the positive blowing pipeline (600) is perpendicular to the axial line of the back blowing pipeline (100).
2. The system for detecting the blowback recovery performance of an air filter according to claim 1, wherein a plurality of air storage tanks (340) are provided, and the plurality of air storage tanks (340) are sequentially communicated and then communicated with an inlet end of the air intake pipeline (310).
3. The system for detecting the blowback restoration performance of an air filter according to claim 2, wherein the blowback device further comprises an air compressor (350); the air compressor (350) communicates with the air reservoir (340) furthest from the air intake conduit (310).
4. The system for detecting the blowback restoration performance of an air filter according to claim 1, wherein a dust generating device (400) is disposed on the blowback pipe (100); the dust generating device (400) is disposed in the upstream tube (110), and the dust generating device (400) is located upstream of the first counter (510).
5. A method for detecting the blowback recovery performance of an air filter is characterized in that the method is used in the blowback recovery performance detection system of the air filter according to any one of claims 1 to 4;
the method for detecting the back blowing recovery performance of the air filter comprises the following steps:
generating a dust raising airflow flowing from a forward blowing pipeline (600) to a reverse blowing pipeline (100);
and secondly, generating a dust raising airflow flowing from the back blowing pipeline (100) to the forward blowing pipeline (600) by using a back blowing device, and counting the value of the first counter (510) and the value of the second counter (520).
6. The method for detecting blowback recovery performance of an air filter according to claim 5, wherein in step one, a pressure difference between the upstream pipe (110) and the downstream pipe (120) is measured, and when the pressure difference is constant, generation of a dust-laden air flow from the blowback pipe (100) to the forward blowing pipe (600) is stopped.
7. The method for detecting blowback restoration performance of an air filter according to claim 5, wherein the size of the pulse valve (320) is adjusted before the first step.
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| US4653964A (en) * | 1985-06-27 | 1987-03-31 | Precision Metal Fabricators, Inc. | Single filer blow-back apparatus |
| CN101480550A (en) * | 2008-01-08 | 2009-07-15 | 张一飞 | Intelligent high-efficient bag dust collector and method for blowing and cleaning dust thereof |
| AU2010210024A1 (en) * | 2008-02-05 | 2010-09-02 | Ptronik International Pty Ltd | Dust collector control system |
| CN102908840A (en) * | 2012-09-29 | 2013-02-06 | 中国石油大学(北京) | Pulse backflush deashing device for filter |
| CN107019962A (en) * | 2017-04-21 | 2017-08-08 | 南京扬子公交客运有限公司 | Car air filtering core cleaner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103708432B (en) * | 2013-12-27 | 2015-11-18 | 成都易态科技有限公司 | The method of yellow phosphorus, equipment and special receipts phosphorus device is reclaimed from Electric Cooker phosphorus furnace gas |
| CN110346259B (en) * | 2019-08-01 | 2024-03-29 | 国能南京电力试验研究有限公司 | System and method for evaluating blowback performance of self-cleaning air inlet filter of gas turbine |
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2020
- 2020-12-15 CN CN202011479684.XA patent/CN112717570B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653964A (en) * | 1985-06-27 | 1987-03-31 | Precision Metal Fabricators, Inc. | Single filer blow-back apparatus |
| CN101480550A (en) * | 2008-01-08 | 2009-07-15 | 张一飞 | Intelligent high-efficient bag dust collector and method for blowing and cleaning dust thereof |
| AU2010210024A1 (en) * | 2008-02-05 | 2010-09-02 | Ptronik International Pty Ltd | Dust collector control system |
| CN102908840A (en) * | 2012-09-29 | 2013-02-06 | 中国石油大学(北京) | Pulse backflush deashing device for filter |
| CN107019962A (en) * | 2017-04-21 | 2017-08-08 | 南京扬子公交客运有限公司 | Car air filtering core cleaner |
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