CN116140309A - Air bag cleaning and purifying system and method - Google Patents
Air bag cleaning and purifying system and method Download PDFInfo
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- CN116140309A CN116140309A CN202310437457.8A CN202310437457A CN116140309A CN 116140309 A CN116140309 A CN 116140309A CN 202310437457 A CN202310437457 A CN 202310437457A CN 116140309 A CN116140309 A CN 116140309A
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- air bag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/083—Removing scrap from containers, e.g. removing labels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B2209/00—Details of machines or methods for cleaning hollow articles
- B08B2209/08—Details of machines or methods for cleaning containers, e.g. tanks
- B08B2209/085—Cleaning flexible bags
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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
Abstract
The invention relates to the technical field of cleaning of container bags for detection, and discloses an air bag cleaning and purifying system and method. Wherein an air bag cleaning and purifying system comprises: the first pump body is used for pumping the cleaning air into the air bag when being communicated with the air bag; the conversion piece comprises an interface which is used for being communicated with the gas port end of the gas bag, a gas inlet which is communicated with the output end of the first pump body, and a gas outlet which is used for discharging gas in the gas bag. An air bag cleaning and purifying method comprises the steps of: s1, filling cleaning gas into an air bag by using a pump body, so that the cleaning gas is discharged after passing through the air bag; s2, inflating the cleaning gas discharged from the S1 into the air bag through the pump body to form a circulation loop, and discharging the gas after a certain time is kept. According to the invention, the manual work is replaced by equipment detection, the detection efficiency is improved, the labor cost is reduced, the effect of saving the cleaning gas is achieved by circulating the gas in the air bag, the air bag is insulated by the insulation cover, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of cleaning of container bags for detection, in particular to an air bag cleaning and purifying system and method.
Background
The sampling device for collecting and temporarily storing the environment-friendly detection gas is also called a gas collecting bag or a gas sampling bag, the gas bag sampling is a conventional sampling mode of the current gas chromatography detection, in order to reduce the cost, the sampled gas bag is put into use after being cleaned, the cleaning of the gas bag is basically finished one by manpower at present, namely, an experimenter firstly fills high-purity nitrogen or dealkylated air into the gas bag, then extrudes the gas, re-charges the gas, and finally achieves the cleaning purpose for multiple times, but the cleaning mode has certain defects:
the traditional air bag cleaning mode not only consumes a great deal of time and energy of experimenters, but also is often insufficient in manual air discharge when the air bag for collecting the sample with too high concentration is faced, the condition that the measurement result is affected due to incomplete cleaning often occurs, and if the existing device is used for assisting in discharging the residual gas in the air bag, certain damage is easily caused to the air bag, and the tightness of the air bag is easily affected;
the existing cleaning mode can not select and switch the cleaning gas, and can generate the problems of waste of gas sources or uncleanness in cleaning;
the prior cleaning method can not recycle the heat used for heating the cleaning gas, thereby causing heat loss and resource waste and simultaneously being incapable of positively responding to the environmental protection policy;
the current cleaning mode can not directly detect whether the air bag is cleaned in situ, and the air bag needs to be taken down for chromatographic analysis, so that the labor is wasted and the time cost is wasted.
Based on the above, the present application provides an air bag cleaning and purifying system and method for solving the defects of the prior art.
Disclosure of Invention
The present invention is directed to a system and a method for cleaning and purifying an air bag, which solve the above-mentioned problems in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
an air bag cleaning and purifying system comprising: the first pump body is used for pumping the cleaning air into the air bag when being communicated with the air bag; the conversion piece comprises an interface which is used for being communicated with the gas port end of the gas bag, a gas inlet which is communicated with the output end of the first pump body, and a gas outlet which is used for discharging gas in the gas bag.
Preferably, the air bag cleaning and purifying system further comprises a catalytic oxidation reactor, wherein the output end of the catalytic oxidation reactor is communicated with the input end of the first pump body and is used for removing hydrocarbons in the cleaning gas passing through the catalytic oxidation reactor, and the obtained hydrocarbon-removing gas enters the air bag as the cleaning gas.
Preferably, the air bag cleaning and purifying system further comprises a first heat exchanger, wherein the first heat exchanger is used for exchanging heat between the cleaning gas before hydrocarbon removal and the hydrocarbon removal gas, and filling the hydrocarbon removal gas after heat exchange into the air bag.
Preferably, the first heat exchanger comprises: a cold medium inlet for introducing a purge gas prior to hydrocarbon removal; the cold medium outlet is communicated with the input end of the catalytic oxidation reactor and is used for introducing the cleaning gas before hydrocarbon removal into the catalytic oxidation reactor; the heat medium inlet is communicated with the output end of the catalytic oxidation reactor and is used for introducing hydrocarbon-removing gas into the first heat exchanger; and the heat medium outlet is communicated with the input end of the first pump body and is used for introducing the hydrocarbon-removing gas after heat exchange into the air bag.
Preferably, an air bag cleaning and purifying system further comprises: the gas storage bottle is used for storing another cleaning gas; and the first two-position three-way valve is communicated with the gas storage bottle at a first end, is used for introducing cleaning gas at a second end and is communicated with the cold medium inlet at a third end.
Preferably, the air bag cleaning and purifying system further comprises a second two-position three-way valve and a third two-position three-way valve; the first end of the second two-position three-way valve is used for inputting cleaning gas, and the second end of the second two-position three-way valve is communicated with the input end of the first pump body; the first end of the third two-position three-way valve is communicated with the air outlet, and the second end is used for exhausting the air in the air bag; the third end of the second two-position three-way valve is communicated with the third end of the third two-position three-way valve.
Preferably, the air bag cleaning and purifying system further comprises a PID detector, and the input end of the PID detector is communicated with the second end of the third two-position three-way valve.
Preferably, the conversion piece comprises a heat preservation cavity, and a heat preservation material is arranged in the heat preservation cavity and used for preserving heat of cleaning gas in the air bag.
Preferably, the air bag cleaning and purifying system further comprises a second heat exchanger, a circulating loop is formed between a shell cavity and a heat preservation cavity of the second heat exchanger, and a second pump body is arranged on the circulating loop; the input end of the second heat exchanger tube cavity is communicated with the air outlet, and the output end is used for outputting the gas after heat exchange.
The invention also provides the following technical scheme:
an air bag cleaning and purifying method comprises the steps of: s1, filling cleaning gas into the air bag by using the pump body, so that the cleaning gas is discharged after passing through the air bag.
Preferably, the method for cleaning and purifying the air bag further comprises the steps of: s0. removing hydrocarbon substances in the cleaning gas to obtain hydrocarbon-removed gas, then performing heat exchange between the hydrocarbon-removed gas and the subsequent cleaning gas to obtain hydrocarbon-removed gas with the temperature of 80-100 ℃, and then executing step S1.
Preferably, the method for cleaning and purifying the air bag further comprises the steps of: s2, inflating the cleaning gas discharged from the S1 into the air bag through the pump body to form a circulation loop, and discharging the gas after a certain time is kept.
Preferably, the method for cleaning and purifying the air bag further comprises the steps of: s3, detecting the gas exhausted by the S2, detecting whether the total pollutant amount of the gas meets the standard, if so, pumping the air bag to finish cleaning, and if not, repeating the steps S0-S3.
Preferably, the method for cleaning and purifying the air bag further comprises the steps of: s4, if the total pollutant amount of the gas still does not reach the standard after the steps S0-S3 are repeated for a plurality of times, replacing the cleaning gas, and repeating the steps S0-S3.
Preferably, in step S3, the gas is subjected to heat exchange before being detected, and the recovered heat is used to keep the air bag warm.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the air bag cleaning system and method disclosed by the invention, the circulating pump is used for replacing manual cleaning action on the air bag, so that the cleaning efficiency is improved, the manual work is saved, the circulating loop is arranged at the air bag, the cleaning purpose is achieved by circulating the air in the air bag, the effect of solving the cleaning air is achieved, furthermore, the environmental air is used as an air source through the catalytic oxidation reactor, and the air is used as the cleaning air after catalytic oxidation and heat exchange, so that the use of high-pressure clean air is avoided, and the cost is reduced;
2. according to the air bag cleaning system disclosed by the invention, different cleaning gases can be rapidly adopted according to actual requirements through switching of the electromagnetic valve;
3. according to the air bag cleaning system and method disclosed by the invention, the air bag is insulated through the insulation cavity, so that the energy consumption of the system is reduced, and the heat of waste gas is recovered through the circulating pump and heat exchange, so that the energy consumption of the system is reduced, and the system is environment-friendly;
4. according to the air bag cleaning system disclosed by the invention, after cleaning is finished, the PID detector is utilized to directly perform in-situ detection on the waste gas, so that the air bag is not required to be taken down for inspection, and the labor cost and the time cost are further saved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram showing the operation of the air bag cleaning and purifying system according to embodiment 1 of the present invention;
fig. 2 is a schematic view of the structure of the first heat exchanger 5 in embodiment 1 of the present invention;
fig. 3 is a schematic structural view of a conversion member 3 in embodiment 1 of the present invention;
in the figure:
a first pump body 1;
an air bag 2;
the conversion piece 3, the interface 31, the air inlet 32, the air outlet 33 and the heat preservation cavity 34;
a catalytic oxidation reactor 4;
a first heat exchanger 5, a cold medium inlet 51, a cold medium outlet 52, a heat medium inlet 53, and a heat medium outlet 54;
a gas cylinder 6;
a first two-position three-way valve 7;
a second two-position three-way valve 8;
a third two-position three-way valve 9;
a PID detector 10;
a second heat exchanger 11;
a second pump body 12.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The air bag sampling is a conventional sampling mode of the current gas chromatography detection, aiming at a non-disposable air bag, in order to repeatedly sample and use, the air bag is required to be cleaned before sampling, so that the sampled gas is prevented from being polluted by historical residual substances, and the accuracy and reliability of an environment-friendly detection result are ensured.
In order to solve the above problems, the present application provides embodiment 1, which is an optimal solution for an air bag cleaning and purifying system.
The air bag is also called an air collecting bag or an air sampling bag, and can be divided into a plurality of types according to materials and volumes, but the basic structure is provided with a bag body and an air port end (with a switch valve), the air inlet end is used for realizing the inlet and outlet of air, the equipment is used for replacing manpower, and the air inlet end of the air bag is provided with an air inlet and an air outlet, so that the automatic control is convenient to realize. Based on this, as shown in fig. 1, which is a schematic diagram of the operation of the present air bag cleaning and purifying system, the present cleaning and purifying system includes a conversion member 3, and the conversion member 3 includes an interface 31 for communicating with the air port end of the air bag 2, an air inlet 32 for sucking air, and an air outlet 33 for discharging air in the air bag 2.
Further, in order to reduce the labor, as shown in fig. 1, the purification system further comprises a first pump body 1, wherein the first pump body 1 is preferably a circulating pump, and the output end of the first pump body 1 is communicated with the air bag 2 through the air inlet 32 and is used for pumping the cleaning air into the air bag 2, so that the labor is liberated.
Further, in order to reduce the cleaning cost, in this embodiment, the air is considered to be easily available as the cleaning gas, so as to avoid the high-pressure clean gas for the laboratory, and thus the air needs to be cleaned, based on this, as shown in fig. 1, the cleaning system further includes a catalytic oxidation reactor 4, the catalytic oxidation reactor 4 is filled with a catalytic oxidant, an output end of the catalytic oxidation reactor 4 is communicated with an input end of the first pump body 1, and when the air enters the catalytic oxidation reactor 4, the catalytic oxidant in the catalytic oxidation reactor 4 chemically reacts with hydrocarbons to remove hydrocarbons in the air, and the obtained hydrocarbon-removing gas enters the air bag 2 as the cleaning gas.
Furthermore, the reaction occurring in the catalytic oxidation reactor 4 releases heat to generate high-temperature clean gas, the temperature can reach 250-350 ℃, but the highest temperature that the air bag can bear is 150 ℃, so the clean gas must be subjected to heat exchange to perform cooling treatment before being introduced into the air bag, and based on the clean gas, as shown in fig. 1, the purification system further comprises a first heat exchanger 5, in the embodiment, the first heat exchanger 5 is used for exchanging heat between air before hydrocarbon removal and hydrocarbon removal gas, the temperature of the hydrocarbon removal gas after heat exchange is 80-100 ℃, the air bag 2 can be filled, and in the embodiment, the first heat exchanger 5 adopts stainless steel plate type heat exchange, so that the condensed water generated in the heat exchange process of the heat exchanger is prevented from corroding the inside of the heat exchanger, and the service life of the heat exchanger is further prolonged.
Further, the connection mode between the catalytic oxidation reactor 4 and the first heat exchanger 5 is specifically as follows: fig. 2 is a schematic structural diagram of the first heat exchanger 5, which shows that the first heat exchanger 5 includes a cold medium inlet 51, and the cold medium inlet 51 is used for introducing cleaning gas before hydrocarbon removal, that is, introducing air before hydrocarbon removal; the device also comprises a cold medium outlet 52, wherein the cold medium outlet 52 is communicated with the input end of the catalytic oxidation reactor 4 and is used for introducing the cleaning gas before hydrocarbon removal into the catalytic oxidation reactor 4; the catalytic oxidation reactor also comprises a heat medium inlet 53, wherein the heat medium inlet 53 is communicated with the output end of the catalytic oxidation reactor 4; the heat pump further comprises a heat medium outlet 54, wherein the heat medium outlet 54 is communicated with the input end of the first pump body 1 and is used for introducing the hydrocarbon-removing gas after heat exchange into the air bag 2.
In this way, the cold air is reacted in the catalytic oxidation reactor 4, and then the high-temperature hydrocarbon-removing air is discharged, enters the first heat exchanger 5 through the heat medium inlet 53, and is subjected to heat exchange with the cold air in the first heat exchanger 5, so that the temperature of the purge gas is reduced to facilitate filling the air bag.
Furthermore, the cleaning gas needs to circulate in the air bag to achieve a good cleaning effect, so as shown in fig. 1, the purification system further comprises a second two-position three-way valve 8 and a third two-position three-way valve 9, wherein the second two-position three-way valve 8 and the third two-position three-way valve 9 are electromagnetic valves; the first end of the second two-position three-way valve 8 is used for inputting cleaning gas, and the second end is communicated with the input end of the first pump body 1, namely the cleaning gas cooled by the first heat exchanger 5 needs to enter the first pump body 1 through the second two-position three-way valve 8; the first end of the third two-position three-way valve 9 is communicated with the air outlet 33, and the second end is used for discharging the air in the air bag 2, namely the cleaning air passing through the air bag 2 is discharged through the third two-position three-way valve 9; the third end of the second two-position three-way valve 8 is communicated with the third end of the third two-position three-way valve 9, namely gas can enter the air bag 2 through the second two-position three-way valve 8 after being discharged through the third two-position three-way valve 9, so as to form a circulation loop;
when the cleaning action is executed, the third two-position three-way valve 9 can be closed firstly, the first pump body 1 and the second two-position three-way valve 8 are opened, cleaning gas is filled into the air bag 2, then a passage between the second two-position three-way valve 8 and the third two-position three-way valve 9 is opened, the gas forms a circulation loop to clean the air bag 2, and the cleaning gas is discharged through the third two-position three-way valve 9 after circulation for a plurality of times.
Further, in order to detect whether the air bag is cleaned, as shown in fig. 1, the purification system is provided with a PID detector 10, the PID detector 10 is a photo-ion detector, and the photo-ion detector mainly relies on ultraviolet energy to ionize gas molecules, so that the total amount of pollutants can be detected, the input end of the PID detector 10 is communicated with the second end of the third two-position three-way valve 9, and the cleaning gas is input into the PID detector 10 to detect whether the total amount of the pollutants reaches the standard, so that the in-situ detection of the air bag 2 is realized.
Further, in some cases, the air bag 2 is not cleaned by using the hydrocarbon-removing air, and then a cleaner cleaning gas is needed to clean the air bag 2, so as to obtain the air bag cleaning system, as shown in fig. 1, the cleaning system further includes a gas storage bottle 6, and in this embodiment, the gas storage bottle 6 stores nitrogen as a spare gas of the cleaning gas.
Further, as shown in fig. 1, the purification system further comprises a first two-position three-way valve 7, wherein the first two-position three-way valve 7 is preferably an electromagnetic valve, a first end of the first two-position three-way valve is communicated with the gas storage bottle 6, a second end of the first two-position three-way valve is used for introducing air, a third end of the first two-position three-way valve is communicated with the cold medium inlet 51, and air or nitrogen can be conveniently selected as purge gas through the electromagnetic valve.
Further, the cleaning action of the air bag 2 can assist the cleaning effect at a certain temperature, and the cleaning air needs to be insulated after reaching the air bag 2, so as shown in fig. 3, which is a schematic structural diagram of the conversion member 3, the conversion member 3 includes an insulation cavity 34, and an insulation material is disposed in the insulation cavity 34 for insulating the cleaning air in the air bag 2.
Further, the cleaning gas has higher temperature after being output by the third two-position three-way valve 9, and the heat of the cleaning gas is taken into consideration for heat preservation of the air bag 2, so as to be taken into consideration, as shown in fig. 2, the purification system comprises a second heat exchanger 11, the second heat exchanger 11 also adopts stainless steel plate type heat exchange, the corrosion of condensed water generated in the heat exchange process of the heat exchanger to the inside of the heat exchanger is avoided, and the service life of the heat exchanger is prolonged; wherein a circulation loop is formed between the shell cavity of the second heat exchanger 11 and the heat preservation cavity 34, and a second pump body 12 is arranged on the circulation loop, and the second pump body 12 is preferably a circulation pump; the input end on the pipe cavity of the second heat exchanger 11 is communicated with the second end of the third two-position three-way valve 9, and the output end is communicated with the input end of the PID detector 10 and is used for outputting the gas subjected to heat exchange for detection.
Example 2 is also provided, which is one of the best modes for an air bag cleaning and decontamination regimen.
Specifically, the method comprises the following steps:
s0. by means of a first two-position three-way valve 7, cold air is selected as cleaning air, the cold air is continuously sucked under the flow of 2000ml/min by pressurizing a first pump body 1, the inlet temperature is 22 ℃, the cold air enters a first heat exchanger 5 from a cold medium inlet 51, the cold air is discharged from a cold medium outlet 52 and enters a catalytic oxidation reactor 4, the air reacts with catalytic oxidant in the cold air to obtain high-temperature hydrocarbon-removing air, the high-temperature hydrocarbon-removing air enters the first heat exchanger 5 through a heat medium inlet 53, heat exchange is carried out on the high-temperature hydrocarbon-removing air and the cold air which enters subsequently, the heat exchange is carried out, the cold air is discharged from a heat medium outlet 54, and the outlet temperature is 100 ℃;
s1, sucking the cleaning gas obtained in the step S0 into the first pump body 1 through the second two-position three-way valve 8, and filling the air bag 2;
s2, adjusting the second two-position three-way valve 8 to be communicated with the third two-position three-way valve 9, and generating cyclic reciprocation of the cleaning gas in the air bag 2 under the action of the first pump body 1, and maintaining the cyclic operation for 8min;
s3, adjusting the third two-position three-way valve 9 to be communicated with the second heat exchanger 11, under the action of the second heat exchanger 11, enabling the cleaned waste gas to pass through the second heat exchanger 11, enabling the inlet temperature to be 80 ℃, enabling the outlet temperature to be 30 ℃, enabling the waste gas to be fed into the PID detector 10 for detection after heat exchange, and enabling the measurement result to be that the total hydrocarbon concentration in the waste gas reaches the standard sampling requirement (namely, the total hydrocarbon concentration is less than 0.06 mg/m < 3 >), and drying the air bag 2, so that cleaning is completed.
Example 3 is also provided herein, which is also one of the best options for an air bag cleaning and decontamination regimen;
specifically, an old air bag for 5 times is selected and cleaned in the same manner as in the embodiment 2, the measurement result in the step S3 is that the total hydrocarbon concentration in the waste gas fails to meet the standard sampling requirement, and after the steps S0-S3 are repeated for two times, the waste gas still does not reach the standard;
further, the embodiment further includes a step S4 of replacing nitrogen gas through the first two-position three-way valve 7, and executing steps S0-S3 again with the nitrogen gas in the gas storage bottle 6 at a flow rate of 3000ml/min until the measurement result shows that the total hydrocarbon concentration in the waste gas has reached the standard sampling requirement (i.e. the total hydrocarbon concentration is less than 0.06 mg/m 3), and then draining the gas bag 2, and removing the gas bag 2 for standby.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. An air bag cleaning and purifying system, comprising:
the first pump body is used for pumping the cleaning air into the air bag when being communicated with the air bag;
the conversion piece comprises an interface which is used for being communicated with the gas port end of the gas bag, a gas inlet which is communicated with the output end of the first pump body, and a gas outlet which is used for discharging gas in the gas bag;
the valve also comprises a second two-position three-way valve and a third two-position three-way valve; the first end of the second two-position three-way valve is used for inputting cleaning gas, and the second end of the second two-position three-way valve is communicated with the input end of the first pump body; the first end of the third two-position three-way valve is communicated with the air outlet, and the second end of the third two-position three-way valve is used for exhausting air in the air bag; and the third end of the second two-position three-way valve is communicated with the third end of the third two-position three-way valve.
2. The air bag cleaning and purifying system according to claim 1, further comprising a catalytic oxidation reactor, wherein an output end of the catalytic oxidation reactor is communicated with an input end of the first pump body, and is used for removing hydrocarbons in the cleaning gas passing through the catalytic oxidation reactor, and the obtained hydrocarbon-removed gas enters the air bag as the cleaning gas.
3. The air bag cleaning and purifying system of claim 2, further comprising a first heat exchanger for exchanging heat between the cleaning gas before hydrocarbon removal and the hydrocarbon removal gas and charging the hydrocarbon removal gas after heat exchange into the air bag.
4. A gas bag cleaning system according to claim 3, wherein said first heat exchanger comprises:
a cold medium inlet for introducing a purge gas prior to hydrocarbon removal;
the cold medium outlet is communicated with the input end of the catalytic oxidation reactor and is used for introducing the cleaning gas before hydrocarbon removal into the catalytic oxidation reactor;
the heat medium inlet is communicated with the output end of the catalytic oxidation reactor and is used for introducing hydrocarbon-removing gas into the first heat exchanger;
and the heat medium outlet is communicated with the input end of the first pump body and is used for introducing the hydrocarbon-removing gas after heat exchange into the air bag.
5. The air bag cleaning and purifying system of claim 4, further comprising:
a gas cylinder for storing another purge gas;
and the first two-position three-way valve is communicated with the gas storage bottle at a first end, is used for introducing cleaning gas at a second end and is communicated with the cold medium inlet at a third end.
6. The air bag cleaning and purifying system according to any one of claims 1 to 5, further comprising a PID detector, wherein an input end of the PID detector is connected to the second end of the third two-position three-way valve.
7. An air bag cleaning and purifying system according to any one of claims 1 to 5, wherein the conversion member comprises a heat-insulating chamber, and a heat-insulating material is disposed in the heat-insulating chamber for insulating the cleaning gas in the air bag.
8. The air bag cleaning and purifying system of claim 7, comprising a second heat exchanger, wherein a circulation loop is formed between a shell cavity of the second heat exchanger and the heat preservation cavity, and a second pump body is arranged on the circulation loop; and an input end on the pipe cavity of the second heat exchanger is communicated with the air outlet, and an output end is used for outputting the gas after heat exchange.
9. An air bag cleaning and purifying method, characterized in that the purifying method is applied to the air bag cleaning and purifying system according to any one of claims 1 to 8, and the purifying method comprises the steps of:
s1, filling cleaning gas into the air bag by using the pump body, so that the cleaning gas is discharged after passing through the air bag.
10. The method of cleaning an airbag of claim 9, further comprising the steps of:
s0. removing hydrocarbon substances in the cleaning gas to obtain hydrocarbon-removed gas, then performing heat exchange between the hydrocarbon-removed gas and the subsequent cleaning gas to obtain hydrocarbon-removed gas with the temperature of 80-100 ℃, and then executing step S1.
11. An air bag cleaning and purifying method according to claim 9 or 10, further comprising the steps of:
s2, inflating the cleaning gas discharged from the S1 into the air bag through the pump body to form a circulation loop, and discharging the gas after a certain time is kept.
12. The method of cleaning an airbag of claim 11, further comprising the steps of:
s3, detecting the gas exhausted by the S2, detecting whether the total pollutant amount of the gas meets the standard, if so, pumping the air bag to finish cleaning, and if not, repeating the steps S0-S3.
13. The method of cleaning an airbag of claim 12, further comprising the steps of:
s4, if the total pollutant amount of the gas still does not reach the standard after the steps S0-S3 are repeated for a plurality of times, replacing the cleaning gas, and repeating the steps S0-S3.
14. The method according to claim 12, wherein in the step S3, heat is exchanged with the gas before the gas is detected, and the recovered heat is used to keep the gas in temperature.
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| CN202310437457.8A CN116140309A (en) | 2023-04-23 | 2023-04-23 | Air bag cleaning and purifying system and method |
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450654Y (en) * | 2000-11-15 | 2001-09-26 | 中国石油化工股份有限公司 | Sampler |
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| CN218895996U (en) * | 2022-10-21 | 2023-04-21 | 山东蓝城分析测试有限公司 | Vacuum box gas sampling device |
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| CN2450654Y (en) * | 2000-11-15 | 2001-09-26 | 中国石油化工股份有限公司 | Sampler |
| CN204855218U (en) * | 2015-07-09 | 2015-12-09 | 北京盈盛恒泰科技有限责任公司 | Online gas sampling ware |
| CN205887564U (en) * | 2016-08-18 | 2017-01-18 | 广州盛康仪器有限公司 | Automatic wash sampling bagging apparatus |
| CN206177903U (en) * | 2016-09-27 | 2017-05-17 | 重庆渝久环保产业有限公司 | Multi -functional gaseous detecting system |
| CN109387405A (en) * | 2018-11-21 | 2019-02-26 | 临安区域大气本底站 | Air sample airbag samples auto-flushing air charging system |
| CN210571611U (en) * | 2019-09-10 | 2020-05-19 | 青岛明华电子仪器有限公司 | Vacuum box sampler with automatic cleaning and sampling functions |
| CN110624912A (en) * | 2019-11-06 | 2019-12-31 | 四川晟实科技有限公司 | Air bag cleaning machine and using method thereof |
| CN213103502U (en) * | 2020-08-21 | 2021-05-04 | 内蒙古兴洋科技有限公司 | Cleaning device for clean valve |
| CN214918976U (en) * | 2021-06-24 | 2021-11-30 | 青岛崂山电子仪器总厂有限公司 | Air bag cleaning equipment capable of reducing gas consumption |
| CN215466857U (en) * | 2021-09-01 | 2022-01-11 | 四川炯测环保技术有限公司 | Air bag belt cleaning device |
| CN216245446U (en) * | 2021-09-18 | 2022-04-08 | 明达光电(厦门)有限公司 | Heated air circulation drying system |
| CN114577555A (en) * | 2022-03-29 | 2022-06-03 | 江苏新锐环境监测有限公司 | Gas sampling method by air bag method |
| CN218743656U (en) * | 2022-10-20 | 2023-03-28 | 彩虹（合肥）液晶玻璃有限公司 | Spacing paper dust collector |
| CN218895996U (en) * | 2022-10-21 | 2023-04-21 | 山东蓝城分析测试有限公司 | Vacuum box gas sampling device |
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