CN217404076U - Particulate matter filtration system and survey system in compressed air - Google Patents
Particulate matter filtration system and survey system in compressed air Download PDFInfo
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- CN217404076U CN217404076U CN202122373997.3U CN202122373997U CN217404076U CN 217404076 U CN217404076 U CN 217404076U CN 202122373997 U CN202122373997 U CN 202122373997U CN 217404076 U CN217404076 U CN 217404076U
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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
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Abstract
The utility model provides a filtering system for particulate matters in compressed air, which comprises a collecting pipe and a blowing pipe which are communicated with a compressed air main pipe; according to the airflow direction, a first stop valve, a second stop valve, a trapping device, a third stop valve, a flow regulating valve, a drying tank and a flowmeter are sequentially arranged on the trapping pipe; the air inlet end of the purging pipe is positioned at the downstream of the first stop valve and the upstream of the second stop valve; the air outlet end is located at the downstream of the third stop valve and the upstream of the flow regulating valve, the pressure bearing capacity of the catcher is large, pressure reduction is not needed, the catcher can be directly connected into a compressed air system, actual conditions are met, the detection result is more accurate and reliable, the catcher and the filter cylinder which are matched with the compressed air can be selected according to the compressed air with different particulate matter content levels, and quantitative detection of the mass concentration of the particulate matters in the compressed air is realized through trapping and determination of the particulate matters.
Description
Technical Field
The utility model relates to a compressed air quality testing analysis technical field specifically is a particulate matter filtration system among compressed air.
Background
Compressed air is the second largest power source next to electricity, and is also a process source with multiple uses. The application range of the composite material is wide in industries and departments of petroleum, chemical industry, metallurgy, electric power, machinery, light industry, textile, automobile manufacturing, electronics, food, medicine, biochemistry, national defense, scientific research and the like.
Taking a power plant as an example, a compressed air system is an indispensable public system in the power plant, and mainly has the functions of providing instrument control gas, maintenance gas and the like, and the reliability of the compressed air system directly influences the effective operation of the whole unit. Particularly, the compressed air system for the instrument is related to whether the pneumatic valve actuating mechanism can normally act or not, and the safe operation of the whole power plant is influenced. In recent years, power generation enterprises have further demanded enhanced compressed air quality control for safety risk control assessment.
The content of the particulate matters is an important index for detecting the compressed air, the particulate matters refer to solid particles which are larger than 0.5 mu m and are removed of attached water, and trace components which are adsorbed by the particulate matters and are not volatilized after drying are regarded as the particulate matters, such as oil and the like. The accurate particulate matter content in the compressed air that detects just can correctly evaluate the air compressor machine operation conditions, is the important supervision means of guaranteeing compressed air system safe operation, and then guarantee whole power plant safe operation. However, the conventional method is limited by the conventional technique, and only the dust-containing particle size distribution is detected, that is, the number of particles smaller than 0.5 μm, the number of particles larger than 0.5 μm and smaller than 1 μm, etc. are detected by a laser particle counter, and the corresponding standard requirements are that the number of particles smaller than 0.5 μm cannot be larger than a certain value, the number of particles larger than 0.5 μm and smaller than 1 μm cannot be larger than a certain value, etc., and there is no detection method or standard requirement for the mass concentration of the particulate matter. For example GB/T13277.4-2015 compressed air part 4: the laser particle counter method, the condensation nucleus counter method, the differential mobility analyzer method, the scanning mobility particle size analyzer method and the method of observing the surface of the membrane by a microscope mentioned in the solid particle measurement method, wherein 5 methods can only measure the number of particles with the diameter in a certain range (such as 0.5-5.0 μm). For example, GB/T4830-2015 "pressure range and quality of air source of industrial automation instrument" only requires that the particle size of dust in the air source is not more than 3 μm, and does not require the content of particulate matters less than 3 μm, so that the operation and maintenance of the compressed air system cannot be comprehensively evaluated to some extent.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a particulate matter filtration system in compressed air of particulate matter concentration among efficient, the accurate compressed air that detects of entrapment is provided.
The utility model discloses a following technical means realizes solving above-mentioned technical problem:
a system for filtering particulate matters in compressed air comprises a collecting pipe (4) and a blowing pipe (5), wherein the collecting pipe (4) is communicated with a compressed air main pipe (1);
according to the airflow direction, a first stop valve (41), a second stop valve (42), a trapping device (43), a third stop valve (44), a flow regulating valve (45), a drying tank (46) and a flowmeter (47) are arranged on the trapping pipe (4) in sequence;
the air inlet end of the purging pipe (5) is positioned at the downstream of the first stop valve (41) and the upstream of the second stop valve (42); the air outlet end is positioned at the downstream of the third stop valve (44) and at the upstream of the flow regulating valve (45).
As a further optimized technical scheme, the trapping device (43) comprises a trap (431) and a filter cylinder (432), wherein the trap (431) is movably matched with the filter cylinder (432).
As a further optimized technical scheme, a fourth stop valve (51) is arranged on the purging pipe (5).
As a further optimized technical scheme, a pressure gauge (6) is further arranged on the collecting pipe (4), and the pressure gauge (6) is arranged at the downstream of the first stop valve (41) and at the upstream of the second stop valve (42).
As a further optimized technical scheme, the catcher (431) comprises a cover (4311) and a catcher body (4312), wherein the cover (4311) is in rotating fit with the catcher body (4312).
As a further optimized technical scheme, a compressed air sampling tube (2) is arranged at an outlet of the compressed air main tube (1), and the compressed air sampling tube (2) is communicated with an air inlet end of the collecting tube (4) through a clamping sleeve tube adapter (5).
As a further optimized technical scheme, a stop valve (21) is arranged on the compressed air sampling pipe (2).
As a further optimized technical scheme, the utility model also provides a particulate matter assay system in the compressed air of particulate matter filtration system in this compressed air of adoption still includes balance, oven, desicator, thermometer.
Preferably, the trap has three specifications, the first one is 29mm in internal diameter, 75mm in total depth and 12mm in radius of the bottom hemisphere; the second one is 26mm in inner diameter, 95mm in total depth and 10.5mm in bottom hemisphere radius; the third is an inner diameter of 33mm, a total depth of 125mm and a bottom hemisphere radius of 13.6 mm.
Preferably, the top of the collecting cover and the bottom of the collector body are connected with a pipeline with the inner diameter of 6mm, and the collecting cover, the collector body and the pipeline are all made of stainless steel.
Preferably, the filter cartridge is a disposable glass microfiber glue-free filter cartridge.
Preferably, the filter cartridge has three specifications, the first is that the inner diameter of the open end is 28mm, the total height is 70mm, the inner diameter of the bottom hemisphere is 11mm, and the weight is 1.0g +/-0.2 g; the second is that the inner diameter of the opening end is 25mm, the total height is 90mm, the inner diameter of the bottom hemisphere is 9.5mm, and the weight is 1.2g +/-0.1 g; the third is an open end inner diameter of 32mm, a total height of 120mm, a bottom hemisphere inner diameter of 12.6mm, and a weight of 2.0 g. + -. 0.2 g.
Preferably, the inner diameter of the collecting pipe and the purging pipe is 6mm (phi 6), and the collecting pipe and the purging pipe are made of polytetrafluoroethylene materials.
Preferably, the flowmeter is a dry gas flowmeter, and the division value is 2L.
Preferably, the range of the pressure gauge is 0MPa to 2.5MPa, and the division value is 0.05 MPa.
Preferably, the balance is an analytical balance with a maximum weighing value of 200g and a sensory value of 0.1 mg.
Preferably, the dryer is a glass dryer, the diameter of the glass dryer is not less than 180mm, and allochroic silicagel is filled in the glass dryer.
Preferably, the working temperature range of the oven is room temperature to 250 ℃, and the temperature control precision is less than 1 ℃.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the trap and the filter cartridge which are matched are selected according to the content level of the particulate matters in the compressed air, so that the trapping and the determination of the extremely fine particulate matters are more accurate, and the trap and the filter cartridge with 3 specifications respectively cope with 3 conditions of low, medium and high particulate matter content levels in the compressed air.
(2) By adopting a weight method principle, the trapping device does not need to be calibrated, the filter cylinder is a disposable glass microfiber glue-free filter cylinder, is chemically inert, does not contain an adhesive, has the characteristics of small weight loss, high strength, high filtering efficiency and the like, can collect submicron particles, has the trapping efficiency of more than 99.999 percent for particles with the particle size of not less than 0.3 mu m, and reduces the test error.
(3) The pressure of gas above 1.0MPa can be borne, decompression is not needed, and the gas is directly trapped and measured, so that the detection result is closer to the actual situation on site, and the method is more accurate and reliable.
Drawings
Fig. 1 is a schematic view of a system for filtering particulate matter in compressed air according to an embodiment of the present invention;
the device comprises a 1 compressed air main pipe, a 2 compressed air sampling pipe, a 21 stop valve, a 3 clamping sleeve adapter, a 4 collecting pipe, a 41 first stop valve, a 42 second stop valve, a 43 collecting device, a 431 collector, a 432 filter cylinder, a 44 third stop valve, a 45 flow regulating valve, a 46 drying tank, a 47 flow meter, a 5 purging pipe, a 51 fourth stop valve and a 6 pressure gauge.
Detailed Description
To make the objects, aspects and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the detailed implementation, and the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in figure 1, the embodiment of the utility model provides a particulate matter filtration system in compressed air, including the catch pipe 4, the purge tube 5 with the female pipe 1 intercommunication of compressed air.
And a compressed air sampling pipe 2 is arranged at the outlet of the compressed air main pipe 1.
The compressed air sampling pipe 2 is provided with a stop valve 21, and the compressed air sampling pipe 2 is communicated with the air inlet end of the collecting pipe 4 through a clamping sleeve pipe adapter 3.
The trap pipe 4 is provided with a first stop valve 41, a second stop valve 42, a trap device 43, a third stop valve 44, a flow rate control valve 45, a drying tank 46, and a flow meter 47 in this order in the gas flow direction.
The trap device 43 comprises a trap 431 and a filter cartridge 432, wherein the trap 431 comprises a cover 4311 and a trap body 4312, the cover 4311 is rotatably matched with the trap body 4312, and the filter cartridge 432 is arranged in the trap body 4312.
The air inlet end of the purge pipe 5 is positioned at the downstream of the first stop valve 41 and the upstream of the second stop valve 42; the air outlet end is located at the downstream of the third stop valve 44 and the upstream of the flow regulating valve 45, and a fourth stop valve 51 is arranged on the purge pipe 5.
A pressure gauge 6 is provided on the catch pipe 4 downstream of the first shut-off valve 41 and upstream of the second shut-off valve 42.
Referring to fig. 1, in use:
the first step is as follows: the lid 4311 of the trap 431 is unscrewed, the filter cartridge 432 is placed in the trap body 4312 with tweezers, and the lid 4311 of the trap 431 is screwed.
The second step is that: the first, second, and third shut-off valves 41, 42, and 44 were closed, the shut-off valves 21, the fourth shut-off valve 51, and the flow rate control valve 45 were opened, whether the flow meter 47 was normal was observed, and after purging for 5min, the first and fourth shut-off valves 41 and 51 were closed, and the readings of the flow meter 47 were recorded.
The third step: closing the first stop valve 41 and the fourth stop valve 51, opening the second stop valve 42, the third stop valve 44 and the flow regulating valve 45, slowly opening the first stop valve 41 for sampling, regulating the sampling flow rate to make the sampling flow rate close to the flow rate of the pipeline as much as possible, reading the pressure gauge 6, determining the sampling amount according to the concentration of the particulate matters, closing the first stop valve 41 after sampling, recording the reading of the flow meter 47 again, and recording the average atmospheric pressure of the gas.
Example two
As shown in fig. 1, the present embodiment discloses a system for measuring the content of particulate matter in compressed air, which includes a collection pipe 4, a purge pipe 5, a first stop valve 41, a second stop valve 42, a collection device 43, a third stop valve 44, a flow control valve 45, a drying tank 46, and a flow meter 47, which are in communication with a compressed air main pipe 1 in the first embodiment, and is different from the first embodiment in that the system further includes a balance, an oven, a dryer, and a thermometer.
When in use:
the first step is as follows: the filter cartridges 432 are numbered, baked in an oven at 105-110 ℃ for 1 hour, taken out, put into a dryer (with silica gel inside) to be cooled to room temperature, weighed by an analytical balance, dried for 20 minutes and then weighed, if the difference between the two weighing is less than 0.2mg, the constant weight is considered, and the record is kept for later use, otherwise, the drying and the weighing are continued until the constant weight is achieved.
The second step is that: the lid 4311 of the trap 431 is unscrewed, the filter cartridge 432 is placed in the trap body 4312 with forceps, the lid 4311 of the trap 431 is screwed tight, and the number of the filter cartridge 432 is recorded.
The third step: the first, second, and third shut-off valves 41, 42, and 44 were closed, the shut-off valves 21, the fourth shut-off valve 51, and the flow rate adjustment valve 45 were opened, whether the flow meter 47 was normal was observed, and after purging for 5 minutes, the first and fourth shut-off valves 41 and 51 were closed, and the readings of the flow meter 47 were recorded.
The fourth step: closing the first stop valve 41 and the fourth stop valve 51, opening the second stop valve 42, the third stop valve 44 and the flow regulating valve 45, slowly opening the first stop valve 41 for sampling, regulating the sampling flow rate to make the sampling flow rate close to the flow rate of the pipeline as much as possible, recording the temperature of the gas in several times during the sampling process, reading by the pressure gauge 6, determining the sampling amount according to the concentration of the particulate matters, ensuring that the weight gain of the filter cartridge 432 is not less than l mg, closing the first stop valve 41 after the sampling is finished, recording the reading of the flow meter 47 again, recording the volume of the compressed air, and recording the average temperature and the atmospheric pressure of the gas.
The fifth step: and (3) opening the catcher 431, taking out the filter cartridge 432 by using a pair of tweezers, putting the filter cartridge 432 into an original weighing bottle, baking the sampled filter cartridge 432 in an oven at 105 ℃ for 1 hour, taking out the filter cartridge and putting the filter cartridge into a drier, cooling the filter cartridge to room temperature, weighing the filter cartridge to constant weight by using an analytical balance, and subtracting to obtain the mass of the particles.
And a sixth step: from the recorded mass of particles and the volume of compressed air, the particle content was calculated in mg/m 3.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. A system for filtering particulate matters in compressed air is characterized by comprising a collecting pipe (4) and a blowing pipe (5), wherein the collecting pipe (4) is communicated with a compressed air main pipe (1);
according to the airflow direction, a first stop valve (41), a second stop valve (42), a trapping device (43), a third stop valve (44), a flow regulating valve (45), a drying tank (46) and a flowmeter (47) are arranged on the trapping pipe (4) in sequence;
the air inlet end of the purging pipe (5) is positioned at the downstream of the first stop valve (41) and the upstream of the second stop valve (42); the air outlet end is positioned at the downstream of the third stop valve (44) and at the upstream of the flow regulating valve (45).
2. A system for filtering particulate matter from compressed air according to claim 1, wherein said trap device (43) comprises a trap (431) and a filter cartridge (432), said trap (431) and said filter cartridge (432) being movably engaged.
3. A compressed air particulate matter filter system according to claim 2, wherein the trap (431) comprises a lid (4311) and a trap body (4312), the lid (4311) being in a rotating engagement with the trap body (4312).
4. A system for filtering particulate matter from compressed air according to claim 1, characterized in that said collection pipe (4) is also provided with a pressure gauge (6), said pressure gauge (6) being provided downstream of said first shut-off valve (41) and upstream of said second shut-off valve (42).
5. A system for filtering particulate matter from compressed air according to claim 1, characterised in that a fourth shut-off valve (51) is arranged on the purge line (5).
6. A system for filtering particulate matters in compressed air according to claim 1, wherein a compressed air sampling pipe (2) is arranged at an outlet of the compressed air main pipe (1), and the compressed air sampling pipe (2) is communicated with an air inlet end of the collecting pipe (4) through a clamping sleeve pipe adapter (3).
7. A system for filtering particulate matter from compressed air according to claim 6, characterized in that the compressed air sampling tube (2) is provided with a shut-off valve (21).
8. A system for measuring the content of particulate matter in compressed air, comprising a system for filtering particulate matter in compressed air according to any one of claims 1 to 7, further comprising a balance, an oven, a dryer, and a thermometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122373997.3U CN217404076U (en) | 2021-09-28 | 2021-09-28 | Particulate matter filtration system and survey system in compressed air |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122373997.3U CN217404076U (en) | 2021-09-28 | 2021-09-28 | Particulate matter filtration system and survey system in compressed air |
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| CN217404076U true CN217404076U (en) | 2022-09-09 |
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| CN202122373997.3U Active CN217404076U (en) | 2021-09-28 | 2021-09-28 | Particulate matter filtration system and survey system in compressed air |
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Address after: No. 669 Mingzhu Avenue, Baiyan Science and Technology Park, High tech Zone, Hefei City, Anhui Province, 231283 Patentee after: East China electric power test and Research Institute of China Datang Group Science and Technology Research Institute Co.,Ltd. Country or region after: China Patentee after: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. Patentee after: Jiangsu Datang International Lvsigang Power Generation Co.,Ltd. Patentee after: Datang Anhui Power Generation Co.,Ltd. Huainan Luohe Power Generation Branch Address before: 236000 Innovation Avenue 666, Hefei Hi-tech Zone, Anhui Province, as Intelligent Building Patentee before: CHINA DATANG GROUP SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. EAST CHINA ELECTRIC POWER TEST INSTITUTE Country or region before: China Patentee before: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. Patentee before: Jiangsu Datang International Lvsigang Power Generation Co.,Ltd. Patentee before: DATANG HUAINAN LUOHE POWER PLANT |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240520 Address after: No. 669 Mingzhu Avenue, Baiyan Science and Technology Park, High tech Zone, Hefei City, Anhui Province, 231283 Patentee after: East China electric power test and Research Institute of China Datang Group Science and Technology Research Institute Co.,Ltd. Country or region after: China Patentee after: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. Patentee after: Jiangsu Datang International Lvsigang Power Generation Co.,Ltd. Patentee after: Huainan Luohe Power Generation Co.,Ltd. Address before: No. 669 Mingzhu Avenue, Baiyan Science and Technology Park, High tech Zone, Hefei City, Anhui Province, 231283 Patentee before: East China electric power test and Research Institute of China Datang Group Science and Technology Research Institute Co.,Ltd. Country or region before: China Patentee before: DATANG BOILER PRESSURE VESSEL EXAMINATION CENTER Co.,Ltd. Patentee before: Jiangsu Datang International Lvsigang Power Generation Co.,Ltd. Patentee before: Datang Anhui Power Generation Co.,Ltd. Huainan Luohe Power Generation Branch |
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