CN216117314U - Combustible gas on-line measuring device based on laser principle - Google Patents
Combustible gas on-line measuring device based on laser principle Download PDFInfo
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- CN216117314U CN216117314U CN202122455462.0U CN202122455462U CN216117314U CN 216117314 U CN216117314 U CN 216117314U CN 202122455462 U CN202122455462 U CN 202122455462U CN 216117314 U CN216117314 U CN 216117314U
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Abstract
The utility model relates to a combustible gas online detection device based on a laser principle, which comprises a detection sleeve sleeved at a gas pipeline connecting flange, wherein the detection sleeve axially comprises a gas gathering section with a larger inner diameter and connecting sections which are positioned at two ends of the gas gathering section and have smaller inner diameters; the gas gathering section is internally used for gathering leaked fuel gas and is provided with a combustible gas laser detector for detecting the concentration of the fuel gas in the gas gathering section; the detection sleeve is mainly composed of two half detection sleeves hinged together, the detection sleeve is in sealing fit with the gas pipeline, and the detection sleeve is filled with inert gas. After the fuel gas leaks, the combustible gas laser detector can immediately detect the rise of the concentration of the fuel gas in the detection sleeve, so that the detection accuracy and sensitivity are increased, the use safety of the fuel gas is improved, and the occurrence of safety accidents is favorably avoided.
Description
Technical Field
The utility model relates to the technical field of combustible gas detection, in particular to an online combustible gas detection device based on a laser principle.
Background
The combustible gas laser detector is a gas measuring instrument based on infrared diode laser absorption spectrum, and during measurement, a laser probe emits a laser beam to a region to be measured, and the concentration of combustible gas in the region to be measured is calculated through the laser beam received by the laser probe. The combustible gas laser detector who is used for detecting the gas and reveals is all installed to present gas pipeline department, but can diffuse rapidly in the air after the gas is revealed, leads to revealing the back and can not detect out immediately, and the gas can only be monitored to the detector after a certain amount is revealed to the gas and reveals, measures fast, sensitive inadequately, causes the safety problem easily.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an online combustible gas detection device based on a laser principle, which can solve the technical problems that the existing gas detection equipment is not fast and sensitive enough in measurement and has certain potential safety hazard.
The utility model provides the following technical scheme: a combustible gas on-line detection device based on a laser principle comprises a detection sleeve sleeved at a gas pipeline connecting flange, wherein the detection sleeve comprises a gas gathering section with a larger inner diameter and connecting sections which are positioned at two ends of the gas gathering section and have smaller inner diameters in the axial direction, and the inner diameter of each connecting section is matched with the outer diameter of a gas pipeline and is used for being installed on the surface of the gas pipeline; the gas gathering section is used for gathering leaked fuel gas, and a combustible gas laser detector used for detecting the concentration of the fuel gas in the gas gathering section is arranged in the gas gathering section;
the detection sleeve mainly comprises two half detection sleeves which are hinged together, the axis of the hinged position between the two half detection sleeves extends along the axial direction of the detection sleeve, the two half detection sleeves are provided with connecting lugs with connecting holes, and the two connecting lugs are clamped and fixed through bolts and nuts; the half detection sleeves are internally provided with an integral semicircular pipeline sealing groove in the connecting section, the pressing surfaces of the half detection sleeves, which are used for being jointed with the other half detection sleeve, are provided with pressing sealing grooves, sealing strips are arranged in the pipeline sealing grooves and the pressing sealing grooves, the sealing strips in the pipeline sealing grooves are used for keeping sealing with a gas pipeline, the sealing strips in the pressing sealing grooves are used for keeping sealing between the two pressing surfaces after the two half detection sleeves are jointed, and the detection sleeves are filled with inert gas.
Has the advantages that: according to the online detection device for the combustible gas based on the laser principle, the detection sleeve is sleeved on the position, where a leakage point is easy to generate, of a gas pipeline, namely the outer side of a connecting flange, the connecting section of the detection sleeve is in sealing fit with the gas pipeline, once gas leakage occurs, gas in the gas gathering section can be gathered, the combustible gas laser detector immediately detects that the concentration of the gas in the detection sleeve rises, the detection speed and sensitivity of the combustible gas laser detector can be obviously improved, in addition, the detection sleeve is filled with inert gas which is inactive in chemical property and is not easy to react when being mixed with natural gas, the explosion probability of the natural gas is reduced, and the safety problem caused by the natural gas is reduced; in addition, this detect set mainly by two articulated half detect set involution, connect and constitute together, the sealing strip that is equipped with on the half detects the cover guarantees simultaneously that the two halves detects between the cover, detects and all keep sealed between cover and the gas pipeline, and the structure is ingenious, and it is very convenient to detect set dismouting, and sealed respond well, does benefit to the gathering gas. In conclusion, the utility model provides the combustible gas online detection device based on the laser principle, which has sensitive response, high speed and convenient installation, and the occurrence of safety accidents is greatly reduced.
Further, combustible gas on-line measuring device based on laser principle includes singlechip, real-time alarm lamp, gas ooff valve and blast pipe, singlechip, real-time alarm lamp, blast pipe are all fixed in the detection cover outside, and the gas ooff valve sets up in the upstream position that detects the cover on the gas pipeline, the blast pipe is used for the intercommunication to gather the gas section inside and outside, and its inside exhaust ooff valve and exhaust fan that is equipped with are connected combustible gas laser detector and is control connection real-time alarm lamp, gas ooff valve, exhaust ooff valve and exhaust fan respectively in the singlechip sampling.
Has the advantages that: the combustible gas laser detector transmits gas concentration information to the single chip microcomputer, after gas leaks, the single chip microcomputer controls the real-time alarm lamp to flicker so as to remind personnel of gas leakage, and meanwhile, the gas switch valve is controlled to be closed to cut off gas supply; when the gas concentration rises to a higher limit value, in order to prevent gas explosion, the single chip microcomputer controls and opens an exhaust switch valve and an exhaust fan in the exhaust pipe, and the gas in the detection sleeve is accelerated and exhausted. Through the hardware arrangement, after the fuel gas is leaked, different countermeasures can be made according to the fuel gas leakage amount, and the use safety is improved.
Drawings
FIG. 1 is a schematic diagram of the use state of an embodiment 1 of the online combustible gas detection device based on the laser principle of the utility model;
FIG. 2 is a schematic view showing the development of a detection sleeve in the embodiment 1 of the online combustible gas detection device based on the laser principle of the utility model;
FIG. 3 is a structural diagram of a combustible gas on-line detection system constructed by the combustible gas on-line detection device based on the laser principle of the utility model;
reference numerals: 1-a gas pipeline; 2-a connecting flange; 3-detecting the sleeve; 4-a connecting segment; 5-gas gathering section; 6-gas switching valve; 7-combustible gas laser detector; 8-an inflation interface; 9-real-time alarm lamp; 10-an exhaust pipe; 11-an exhaust switch valve; 12-an exhaust fan; 13-laminating surface; 14-connecting lugs; 15-pipeline seal groove; 16-pressing a sealing groove; 17-sealing strip.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The utility model relates to a combustible gas on-line detection device based on the laser principle, which comprises the following specific embodiments in 1:
the overall structure of the online combustible gas detection device based on the laser principle is shown in fig. 1, and comprises a detection sleeve 3 sleeved on a connecting flange 2 on a gas pipeline 1, wherein the detection sleeve 3 comprises a middle gas gathering section 5 and connecting sections 4 at two ends in the axial direction, the inner diameter of each connecting section 4 is matched with the outer diameter of the gas pipeline 1, so that the connecting sections 4 are conveniently installed and fixed on the surface of the gas pipeline 1, the inner diameter of each gas gathering section 5 is larger than that of each connecting section 4, an annular space for gathering gas is formed between each gas gathering section 5 and the gas pipeline 1, a combustible gas laser detector 7 for detecting the concentration of the gas is installed inside each gas gathering section 5, and once the connecting flange 2 leaks the gas, the combustible gas laser detector 7 can quickly detect the increase of the concentration of the gas inside each gas gathering section 5.
The gas detection device also comprises a single chip microcomputer, a gas switch valve 6, a real-time alarm lamp 9 and an exhaust pipe 10, wherein the single chip microcomputer (not shown in the figure) and the exhaust pipe 10 are fixed outside the detection sleeve, and the gas switch valve 6 is positioned at the upstream position of the detection sleeve 3 on the gas pipeline 1 and used for controlling the on-off of gas supply of the gas pipeline 1; the exhaust pipe 10 is used for communicating the outside and the inside of the gas gathering section 5, the exhaust switch valve 11 and the exhaust fan 12 are installed inside, and the real-time alarm lamp 9 is installed and fixed outside the detection sleeve 3. The singlechip is respectively and electrically connected with the gas switch valve 6, the real-time alarm lamp 9, the exhaust switch valve 11, the exhaust fan 12 and the combustible gas laser detector 7. The safety alarm mechanism is as follows: the combustible gas laser detector 7 sends the gas concentration in the gas gathering section 5 detected in real time to the single chip microcomputer, the single chip microcomputer recognizes gas leakage after the gas concentration reaches a certain value, the real-time alarm lamp 9 is controlled to give an alarm, the gas switch valve 6 is closed, gas supply is stopped, and an operator is reminded of gas leakage; when the gas concentration rises to a higher limit value, the single chip microcomputer controls the exhaust fan 12 and the exhaust switch valve 11 to be opened, and the gas in the gas gathering section 5 is exhausted through the exhaust pipe 10, so that explosion caused by the fact that the gas concentration in the detection sleeve 3 is high is prevented.
The structure of the detection sleeve 3 is as shown in fig. 2, and mainly comprises two hinged half detection sleeves, the hinge axes of the two half detection sleeves extend along the axial direction of the detection sleeve 3, the edge of one side of the half detection sleeve opposite to the hinge is provided with a connecting lug 14, the connecting lug 14 is provided with a connecting hole, and after the two half detection sleeves are closed, a bolt penetrates through the two connecting holes to be tightly connected with a nut, so that the two connecting lugs are clamped and fixed together. For guaranteeing the inside leakproofness of detection cover, prevent that the gas from leaking, be equipped with semicircular pipeline seal groove 15 in linkage segment 4 on half detection cover, be equipped with pressfitting seal groove 16 on the pressfitting face 13 that is used for with second half detection cover pressfitting butt joint, pressfitting seal groove 16, all be equipped with sealing strip 17 in the pipeline seal groove 15, after detecting the cover butt joint with two halves, the sealing strip in pressfitting seal groove 16 guarantees to keep sealed between two pressfitting faces 13, the sealing strip in pipeline seal groove 15 guarantees to keep sealed between linkage segment 4 and the gas pipeline 1. In addition, the detection sleeve 3 is further provided with an inflation interface 8 for filling inert gas into the gas gathering section 5, internal threads are arranged in the inflation interface 8, and a blocking head for preventing gas from leaking out is mounted on the internal threads of the inflation interface 8 after inflation is completed. After the detection sleeve 3 is installed on the gas pipeline 1, inert gas nitrogen or helium is filled into the detection sleeve through the inflation connector 8, the inert gas is not easy to generate chemical reaction with gas, and the use safety of the device is improved.
According to the combustible gas online detection device based on the laser principle, the detection sleeve capable of gathering gas is arranged at the position where leakage is easy to occur on a gas pipeline, once the gas leaks, the combustible gas laser detector can rapidly detect the gas in the detection sleeve after the internal concentration of the gas rises and generate a series of measures such as alarming, cutting off a gas source and the like through the single chip microcomputer, compared with the existing naked detection method, the detection sensitivity and accuracy are improved, and safety accidents are greatly reduced; the detection sleeve adopts a split structure with involution, has ingenious structural design, is very convenient to assemble and disassemble, is convenient for later equipment maintenance, and is filled with inert gas to reduce the activity of gas in an annulus and enhance the safety as much as possible; therefore, the technical problems that the existing gas detection equipment is not fast and sensitive enough in measurement and has certain potential safety hazards can be solved.
The laser principle-based combustible gas online detection devices can be used for constructing a combustible gas online detection system shown in fig. 3, a single chip microcomputer in the laser principle-based combustible gas online detection devices can transmit online detected data to a data acquisition terminal in a wireless or wired mode, the data acquisition terminal is analyzed and integrated and then wirelessly transmits the data to a remote monitoring center through NBlot, if the concentration of the combustible gas at a certain position exceeds the standard, the data acquisition terminal drives an audible and visual alarm to give an alarm to play a role in remote reminding, and the combustible gas online detection system forms a data management idea of online detection-data terminal-remote monitoring management, so that the combustible gas online detection system can store a large amount of information and provide basic data for subsequent work and data analysis.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.
Claims (2)
1. A combustible gas on-line detection device based on a laser principle is characterized by comprising a detection sleeve sleeved at a gas pipeline connecting flange, wherein the detection sleeve comprises a gas gathering section with a larger inner diameter and connecting sections which are positioned at two ends of the gas gathering section and have smaller inner diameters in the axial direction, and the inner diameter of each connecting section is matched with the outer diameter of a gas pipeline and is used for being installed on the surface of the gas pipeline; the gas gathering section is used for gathering leaked fuel gas, and a combustible gas laser detector used for detecting the concentration of the fuel gas in the gas gathering section is arranged in the gas gathering section;
the detection sleeve mainly comprises two half detection sleeves which are hinged together, the axis of the hinged position between the two half detection sleeves extends along the axial direction of the detection sleeve, the two half detection sleeves are provided with connecting lugs with connecting holes, and the two connecting lugs are clamped and fixed through bolts and nuts; the half detection sleeves are internally provided with an integral semicircular pipeline sealing groove in the connecting section, the pressing surfaces of the half detection sleeves, which are used for being jointed with the other half detection sleeve, are provided with pressing sealing grooves, sealing strips are arranged in the pipeline sealing grooves and the pressing sealing grooves, the sealing strips in the pipeline sealing grooves are used for keeping sealing with a gas pipeline, the sealing strips in the pressing sealing grooves are used for keeping sealing between the two pressing surfaces after the two half detection sleeves are jointed, and the detection sleeves are filled with inert gas.
2. The apparatus according to claim 1, comprising a single chip microcomputer, a real-time alarm lamp, a gas switch valve and an exhaust pipe, wherein the single chip microcomputer, the real-time alarm lamp and the exhaust pipe are all fixed outside the detection sleeve, the gas switch valve is arranged at an upstream position of the detection sleeve on a gas pipeline, the exhaust pipe is used for communicating the inside and the outside of the gas gathering section, an exhaust switch valve and an exhaust fan are arranged in the exhaust pipe, and the single chip microcomputer is connected with the combustible gas laser detector in a sampling manner and respectively controls and connects the real-time alarm lamp, the gas switch valve, the exhaust switch valve and the exhaust fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122455462.0U CN216117314U (en) | 2021-10-12 | 2021-10-12 | Combustible gas on-line measuring device based on laser principle |
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| CN202122455462.0U CN216117314U (en) | 2021-10-12 | 2021-10-12 | Combustible gas on-line measuring device based on laser principle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116721518A (en) * | 2023-08-10 | 2023-09-08 | 山东传奇新力科技有限公司 | Intelligent kitchen gas leakage alarm system and method based on Internet of things |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116721518A (en) * | 2023-08-10 | 2023-09-08 | 山东传奇新力科技有限公司 | Intelligent kitchen gas leakage alarm system and method based on Internet of things |
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