CN102489088A - Internal and external gas filtering devices and gas detecting device - Google Patents
Internal and external gas filtering devices and gas detecting device Download PDFInfo
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- CN102489088A CN102489088A CN201110417342XA CN201110417342A CN102489088A CN 102489088 A CN102489088 A CN 102489088A CN 201110417342X A CN201110417342X A CN 201110417342XA CN 201110417342 A CN201110417342 A CN 201110417342A CN 102489088 A CN102489088 A CN 102489088A
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Abstract
The invention provides internal and external gas filtering devices and a gas detecting device; the internal gas filtering device comprises a double layer of cylinders, a cylinder cover, and exhaust holes and filter paper arranged on the cylinder cover; ventilating holes are densely distributed on the inner and outer layers of cylinder walls of the double layer of cylinders, respectively; the filter paper is arranged between the inner and outer layers of cylinder walls; the external gas filtering device comprises an outer cylinder and an internal gas filtering device; a double layer of cylinders is sleeved in the outer cylinder, the cylinder opening of the outer cylinder is hermetically connected with the edge of the cylinder cover, and an air inlet hole is arranged on the bottom part of the outer cylinder; the gas detecting device comprises a gas detector, and a detecting chamber, an air extracting pump, a check valve, a gas drying device and a gas filtering device, which are communicated in sequence; the gas detector is installed in the detecting chamber, the gas drying device is an internal gas drying device or an external gas drying device. The gas filtering device has the advantages of simple structure, good filtering effect, convenience for use and strong practicability, and the gas detecting device has the advantages of accurate detection result and long service life.
Description
Technical field
The present invention relates to a kind of gas detection equipment, specifically, related to a kind of inside and outside gas-filtering device and gas-detecting device put.
Background technology
After city domestic sewage gets into septic tank, under field conditions (factors), after bacterium anaerobic fermentation, decomposition, sedimentation, flow into urban sewage pipe, finally import sewage treatment plant and handle; Septic tank can produce a large amount of pernicious gases in the process of changing excrement, wherein Main Ingredients and Appearance is a fuel gas methane, also has a small amount of hydrogen sulfide, ammonia etc., total gas ingredients more complicated; When fuel gas gathers manyly more more, when reaching LEL, run into when temperature is too high in naked light or the pond, will set off an explosion; At present, have the public reported that a lot of septic tanks blasts are hurted sb.'s feelings.
Water, electricity, natural gas etc. are transported to huge numbers of families through underground pipe network, have guaranteed the ordinary production operation of enterprise and resident's normal life; Underground pipe network, crisscross, wrong vertical complicated, owing to the reason such as not smooth of ventilating in the pipe network, be easy to generate and gather some harmful poisonous or fuel gas, when work such as in pipe network, overhauling under the workman, the poisoning casualty accident very easily takes place; If the fuel gas concentration of accumulated is too high, reach LEL, meet the naked light accident of very easily blasting.
Based on the protection to personal safety, at present, a lot of manufacturer production have been developed the gas detecting instrument that is specifically designed to monitoring septic tank or underground pipe network fuel gas; When gas concentration is too high in detecting septic tank or underground pipe network; To start equipment such as blower fan, in septic tank, blow, or in the septic tank exhausting outward; To reduce its fuel gas content, reach the purpose of eliminating hidden peril of explosion; This type gas detecting instrument is installed to the scene, after coming into operation, and some problems below existing:
The air that septic tank is interior or underground pipe network is interior is general more moistening, messy, also has the fine particle of some thickness to mix wherein; Detection instrument is extracted the gas in the septic tank or in the underground pipe network out with pump, detects if directly be sent to the sensor surface of detection instrument, behind the use certain hour; The metallurgical powder net surface of sensor surface can be stuck with paste by dope; Cause the serious variation of its gas permeability, even not ventilative, the gas that draws up only permeates into sub-fraction or infiltration is not entered; The testing result of detector just can not correctly reflect in the septic tank or the fuel gas content in the pipeline, and gas detector has been brought into play not practical function.
In order to address the above problem, the gas detector of at present a lot of producers has all added filter, that is: when drawing up gas come with pump, filter earlier, sends into detector to gas again and detects; But because its filter is fairly simple; Be not sufficient to address the above problem, cause after its product work a period of time, the metallurgical powder net still can be blocked; Increase the maintenance cost and the frequency of maintenance of product greatly, caused harmful effect also for the user of gas detector.
In order to solve the problem of above existence, people are seeking a kind of desirable technical solution always.
Summary of the invention
The objective of the invention is deficiency to prior art; Thereby a kind of simple in structure, good filtration effect is provided, has been suitable for methane-generating pit or the inner built-in gas-filtering device that uses of underground pipe network; Also provide a kind of easy to use, practical, be suitable for the outside external gas-filtering device that uses of methane-generating pit or underground pipe network, provide also that a kind of testing result is accurate, functional reliability is high, long service life, gas-detecting device that maintenance workload is little.
To achieve these goals; The technical scheme that the present invention adopted is: a kind of built-in gas-filtering device; It comprises that the airtight double-layer barrel of lower end nozzle, sealing are arranged on the cover of said double-layer barrel upper end nozzle, are arranged on aspirating hole and filter paper on the said cover; Wherein, be densely covered with air-vent respectively on the internal layer barrel of said double-layer barrel and the outer barrel, said filter paper is arranged between the internal layer barrel and outer barrel of said double-layer barrel.
Based on above-mentioned, said filter paper is between internal layer barrel and the outer barrel that rugosity is evenly distributed on said double-layer barrel and the internal layer barrel of said double-layer barrel and outer barrel is separated.
Based on above-mentioned, the upper end nozzle of said double-layer barrel is connected through flangeseal with said cover.
A kind of external gas-filtering device, it comprises urceolus and aforesaid built-in gas-filtering device, and wherein, said double-layer barrel is sleeved in the said urceolus, and said urceolus nozzle and said cover edge are tightly connected, and are provided with air admission hole at the bottom of the said urceolus tube.
A kind of gas-detecting device; It comprises gas detecting instrument, sensing chamber, aspiration pump, non-return valve, gas drier and gas-filtering device; Wherein, The aspirating hole of said gas-filtering device is communicated with the air inlet of said gas drier, and the gas outlet of said gas drier is communicated with the import of said non-return valve, and the outlet of said non-return valve is communicated with the air inlet of said aspiration pump; The gas outlet of said aspiration pump is communicated with the air inlet of said sensing chamber, and said gas detecting instrument is installed in the said sensing chamber; Said gas drier is aforesaid built-in gas-filtering device.
A kind of gas-detecting device; It comprises gas detecting instrument, sensing chamber, aspiration pump, non-return valve, gas drier and gas-filtering device; Wherein, The aspirating hole of said gas-filtering device is communicated with the air inlet of said gas drier, and the gas outlet of said gas drier is communicated with the import of said non-return valve, and the outlet of said non-return valve is communicated with the air inlet of said aspiration pump; The gas outlet of said aspiration pump is communicated with the air inlet of said sensing chamber, and said gas detecting instrument is installed in the said sensing chamber; Said gas drier is aforesaid external gas-filtering device.
Based on above-mentioned; Said gas detecting instrument comprises microcontroller circuit and Detection Circuit that is connected said microcontroller circuit respectively and aspiration pump starting or stopping control circuit; Wherein, said aspiration pump starting or stopping control circuit connects said aspiration pump so that said microcontroller circuit is controlled said aspiration pump start and stop.
The relative prior art of the present invention has outstanding substantive distinguishing features and marked improvement; Specifically; This gas-filtering device can effectively purify detected gas, behind the impurity such as the dust in the filtering detected gas, thick substances, again detected gas is sent into sensor surface to detect; The certainty of measurement and the degree of accuracy of gas-detecting device have been improved greatly; Prolonged the service life of sensor simultaneously, be beneficial to the sensor continuous operation, it has simple in structure, good filtration effect, easy to use, practical advantage; This gas-detecting device has that testing result is accurate, functional reliability is high, long service life, advantage that maintenance workload is little.
Description of drawings
Fig. 1 is the structural representation of said built-in gas-filtering device.
Fig. 2 is the internal structure sketch map of said double-layer barrel.
Fig. 3 is the structural representation of said external gas-filtering device.
Fig. 4 is the structural representation of said gas-detecting device.
The specific embodiment
Through the specific embodiment, technical scheme of the present invention is done further detailed description below.
As shown in Figure 4, a kind of gas-detecting device, it comprises gas detecting instrument 10, sensing chamber 11, aspiration pump 12, non-return valve 13, gas drier 14, gas-filtering device 9 and explosion-proof fan; Wherein, The aspirating hole of said gas-filtering device 9 is communicated with the air inlet of said gas drier 14; The gas outlet of said gas drier 14 is communicated with the import of said non-return valve 13; The outlet of said non-return valve 13 is communicated with the air inlet of said aspiration pump 12, and the gas outlet of said aspiration pump 12 is communicated with the air inlet of said sensing chamber 11; Said gas detecting instrument 10 is installed in the said sensing chamber 11 or on the locular wall, said sensing chamber 11 is provided with the gas outlet, so that the gas communication in the sensing chamber 11; Said gas drier 9 is built-in gas-filtering devices.
Said gas detecting instrument 10 comprises microcontroller circuit and the Detection Circuit that is connected said microcontroller circuit respectively, sound light alarming circuit, communicating circuit, aspiration pump starting or stopping control circuit, explosion-proof fan actuator and power circuit; Wherein, said aspiration pump starting or stopping control circuit connects said aspiration pump, establishes program in the said microcontroller circuit basis, controls said aspiration pump with intermittent work mode, realizes the purpose that regularly detects; Said explosion-proof fan actuator connects said explosion-proof fan, and said microcontroller circuit is controlled said explosion-proof fan start and stop according to the detected gas concentration of gathering, so that in time discharge in the methane-generating pit or fuel gas or toxic and harmful in the underground pipe network.
As shown in Figure 1, a kind of built-in gas-filtering device, it comprises that the airtight double-layer barrel of lower end nozzle, sealing are arranged on the cover 4 of said double-layer barrel upper end nozzle, are arranged on aspirating hole 5 and filter paper 3 on the said cover 4; Wherein, be densely covered with air-vent respectively on the internal layer barrel 2 of said double-layer barrel and the outer barrel 1.
As shown in Figure 2; Said filter paper 3 is arranged between the internal layer barrel 2 and outer barrel 1 of said double-layer barrel; Specifically; Said filter paper 3 is between the internal layer barrel 2 and outer barrel 1 that rugosity is evenly distributed on said double-layer barrel, and the internal layer barrel 2 of said double-layer barrel is separated with outer barrel 1; Filter paper 3 is arranged with special folding mode between the ectonexine barrel; Between the ectonexine barrel, in the limited space, increased the filter area of filter paper 3 greatly, filter area is big more; Filter effect is good more; Then the degree of purification of detected gas is high more, and then, be beneficial to long, the effectively work of gas detecting instrument more.
The upper end nozzle of said double-layer barrel and said cover 4 are connected through flangeseal, so that regularly open cover 4, in time change filter paper 3 as required.
During use, said built-in gas-filtering device is installed in the interior perhaps underground pipe network of methane-generating pit, and is communicated with the air inlet of said gas drier 14, get final product through the aspirating hole 5 of flexible pipe with said built-in gas-filtering device.
During work, under the effect of aspiration pump 12, detected gas is drawn between the ectonexine barrel by the air-vent of outer barrel 1; After filter paper 3 filters, can effectively filter out the thick substances in the detected gas, detected gas is purified; At last, clean detected gas gets in the sensing chamber 11 through gas drier 14, non-return valve 13, aspiration pump 12 again, and is final; Detected gas is sent to the sensor surface of Detection Circuit, detects for sensor.
1 difference of present embodiment and embodiment mainly is: said gas drier 9 is external gas-filtering devices.
As shown in Figure 3; A kind of external gas-filtering device; It comprises urceolus 6 and embodiment 1 described built-in gas-filtering device, and wherein, the double-layer barrel of said built-in gas-filtering device is sleeved in the said urceolus 6; The edge of the nozzle of said urceolus 6 and said cover 4 is tightly connected, and is provided with air admission hole 7 at the bottom of 6 of the said urceolus.
During use; Said external gas-filtering device is arranged on outside the outer perhaps underground pipe network of methane-generating pit; And the employing exhaust tube, one of make end be communicated with air admission hole 7, the other end be placed in the methane-generating pit or underground pipe network in; Be communicated with the air inlet of said gas drier 14 through the aspirating hole 5 of flexible pipe again, get final product said external gas-filtering device.
During work, under the effect of aspiration pump 12, detected gas is at first got in the urceolus 6 by exhaust tube; Air-vent by outer barrel 1 is drawn between the ectonexine barrel again, after filter paper 3 filters, can effectively filter out the thick substances in the detected gas; Detected gas is purified; At last, clean detected gas gets in the sensing chamber 11 through gas drier 14, non-return valve 13, aspiration pump 12 again, and is final; Detected gas is delivered to the sensor surface of Detection Circuit, detects for sensor.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (9)
1. built-in gas-filtering device; It is characterized in that: it comprises that the airtight double-layer barrel of lower end nozzle, sealing are arranged on the cover of said double-layer barrel upper end nozzle, are arranged on aspirating hole and filter paper on the said cover; Wherein, Be densely covered with air-vent respectively on the internal layer barrel of said double-layer barrel and the outer barrel, said filter paper is arranged between the internal layer barrel and outer barrel of said double-layer barrel.
2. built-in gas-filtering device according to claim 1 is characterized in that: said filter paper is between internal layer barrel and the outer barrel that rugosity is evenly distributed on said double-layer barrel and the internal layer barrel of said double-layer barrel and outer barrel is separated.
3. built-in gas-filtering device according to claim 1 and 2 is characterized in that: the upper end nozzle of said double-layer barrel is connected through flangeseal with said cover.
4. external gas-filtering device; It is characterized in that: it comprises urceolus and claim 1 or 2 described built-in gas-filtering devices, and wherein, said double-layer barrel is sleeved in the said urceolus; Said urceolus nozzle and said cover edge are tightly connected, and are provided with air admission hole at the bottom of the said urceolus tube.
5. external gas-filtering device according to claim 4 is characterized in that: the upper end nozzle of said double-layer barrel is connected through flangeseal with said cover.
6. gas-detecting device; It is characterized in that: it comprises gas detecting instrument, sensing chamber, aspiration pump, non-return valve, gas drier and gas-filtering device; Wherein, The aspirating hole of said gas-filtering device is communicated with the air inlet of said gas drier, and the gas outlet of said gas drier is communicated with the import of said non-return valve, and the outlet of said non-return valve is communicated with the air inlet of said aspiration pump; The gas outlet of said aspiration pump is communicated with the air inlet of said sensing chamber, and said gas detecting instrument is installed in the said sensing chamber; Said gas drier is claim 1 or 2 described built-in gas-filtering devices.
7. gas-detecting device according to claim 6; It is characterized in that: said gas detecting instrument comprises microcontroller circuit and Detection Circuit that is connected said microcontroller circuit respectively and aspiration pump starting or stopping control circuit; Wherein, said aspiration pump starting or stopping control circuit connects said aspiration pump so that said microcontroller circuit is controlled said aspiration pump start and stop.
8. gas-detecting device; It is characterized in that: it comprises gas detecting instrument, sensing chamber, aspiration pump, non-return valve, gas drier and gas-filtering device; Wherein, The aspirating hole of said gas-filtering device is communicated with the air inlet of said gas drier, and the gas outlet of said gas drier is communicated with the import of said non-return valve, and the outlet of said non-return valve is communicated with the air inlet of said aspiration pump; The gas outlet of said aspiration pump is communicated with the air inlet of said sensing chamber, and said gas detecting instrument is installed in the said sensing chamber; Said gas drier is the described external gas-filtering device of claim 4.
9. gas-detecting device according to claim 8; It is characterized in that: said gas detecting instrument comprises microcontroller circuit and Detection Circuit that is connected said microcontroller circuit respectively and aspiration pump starting or stopping control circuit; Wherein, said aspiration pump starting or stopping control circuit connects said aspiration pump so that said microcontroller circuit is controlled said aspiration pump start and stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110417342XA CN102489088A (en) | 2011-12-14 | 2011-12-14 | Internal and external gas filtering devices and gas detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110417342XA CN102489088A (en) | 2011-12-14 | 2011-12-14 | Internal and external gas filtering devices and gas detecting device |
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| CN102489088A true CN102489088A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110417342XA Pending CN102489088A (en) | 2011-12-14 | 2011-12-14 | Internal and external gas filtering devices and gas detecting device |
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| CN (1) | CN102489088A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675212A (en) * | 2013-12-20 | 2014-03-26 | 上海兰典安全科技有限公司 | Novel gas detecting analysis alarm |
| CN107576764A (en) * | 2017-10-16 | 2018-01-12 | 镇江市南方工矿器材有限公司 | A kind of industrial and mineral gas-detecting device for being easy to detect at a distance |
| CN108132336A (en) * | 2018-01-26 | 2018-06-08 | 孟瑞宏 | A kind of explosion-proof LEL detecting systems |
| CN108961692A (en) * | 2018-08-01 | 2018-12-07 | 合肥泽众城市智能科技有限公司 | A kind of fuel gas detection system and monitoring method |
| CN109812693A (en) * | 2019-02-28 | 2019-05-28 | 上海华敬氢能科技有限公司 | A kind of vehicle-mounted hydrogen-feeding system of fuel cell car |
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| CN1866027A (en) * | 2006-05-18 | 2006-11-22 | 南京卓成自动化设备有限公司 | Integrated gas online detector |
| CN201807258U (en) * | 2010-10-20 | 2011-04-27 | 武安市晶天工贸有限公司 | Ultra-silent energy-saving environmental-protection filter element of large air separation plant |
| CN202387326U (en) * | 2011-12-14 | 2012-08-22 | 河南汉威电子股份有限公司 | Internal gas filter device and external gas filter device as well as gas detection device |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357749Y (en) * | 1998-08-10 | 2000-01-12 | 赵振华 | Medical air filter |
| CN1866027A (en) * | 2006-05-18 | 2006-11-22 | 南京卓成自动化设备有限公司 | Integrated gas online detector |
| CN201807258U (en) * | 2010-10-20 | 2011-04-27 | 武安市晶天工贸有限公司 | Ultra-silent energy-saving environmental-protection filter element of large air separation plant |
| CN202387326U (en) * | 2011-12-14 | 2012-08-22 | 河南汉威电子股份有限公司 | Internal gas filter device and external gas filter device as well as gas detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103675212A (en) * | 2013-12-20 | 2014-03-26 | 上海兰典安全科技有限公司 | Novel gas detecting analysis alarm |
| CN107576764A (en) * | 2017-10-16 | 2018-01-12 | 镇江市南方工矿器材有限公司 | A kind of industrial and mineral gas-detecting device for being easy to detect at a distance |
| CN108132336A (en) * | 2018-01-26 | 2018-06-08 | 孟瑞宏 | A kind of explosion-proof LEL detecting systems |
| CN108961692A (en) * | 2018-08-01 | 2018-12-07 | 合肥泽众城市智能科技有限公司 | A kind of fuel gas detection system and monitoring method |
| CN109812693A (en) * | 2019-02-28 | 2019-05-28 | 上海华敬氢能科技有限公司 | A kind of vehicle-mounted hydrogen-feeding system of fuel cell car |
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Application publication date: 20120613 |