CN204330745U - Portable multi-index methane detector - Google Patents
Portable multi-index methane detector Download PDFInfo
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- CN204330745U CN204330745U CN201420825989.5U CN201420825989U CN204330745U CN 204330745 U CN204330745 U CN 204330745U CN 201420825989 U CN201420825989 U CN 201420825989U CN 204330745 U CN204330745 U CN 204330745U
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Abstract
The utility model discloses Portable multi-index methane detector.Portable multi-index methane detector is by instrument box (1), display screen (2), charging indicator light (3), under-voltage pilot lamp (4), measure pilot lamp (5), alarm lamp (6), first potentiometer (7), second potentiometer (8), 3rd potentiometer (9), switch (10), power switch (11), external power supply socket (12), air chamber cover (13), air intake opening (14), PH testing button (15), measure leak detection function switch S A2 (16), measure leak detection function switch S A1 (17), calibration switch (18), sensor lead interface (19) is formed.The in-built rechargable power supplies of case, circuit board.The utility model achieves fire damp concentration determination function in biogas use procedure, biogas leak detection warning function, the test of biogas drainage pH value, concentration of hydrogen sulfide measurement function, the safety during built-in explosion-proof electrical source can ensure to test.
Description
Technical field
The utility model relates to the dependence test work such as fire damp concentration determination, the warning of biogas leak detection, the test of methane-generating pit liquid pH value, concentration of hydrogen sulfide mensuration in vast production and use of marsh gas use procedure.
Background technology
The use of biogas is not only peasant household and provides the clean energy, and effectively improves Rural Human Settlements.The problems such as Country Household Using Marsh Gas develops rapidly, the safety management thereupon produced more and more come into one's own.Biogas is the potpourri of multiple gases, and general containing methane 50 ~ 70%, all the other are carbon dioxide and a small amount of nitrogen, hydrogen and sulfuretted hydrogen etc.Mainly containing 3 key indexs in Gas application process to need to detect, is that biogas concentration, biogas potential of hydrogen and biogas leak respectively.Methane-generating pit must ensure that the pH value of natural pond liquid is when 7-8.5 in using, and biogas fermentation bacterium could normal breeding, and methane-generating pit could normally be got angry uses, therefore needs constantly to monitor the pH value of natural pond liquid in methane-generating pit use.As leaked during biogas uses, the major accidents such as poisoning, blast will be produced, in biogas routine use, should leak supervision be carried out.
In the actual use of methane-generating pit, sometimes need manually to descend pond to carry out leak test and maintenance, and in methane-generating pit, have the existence of sulfuretted hydrogen toxic gas, sulfuretted hydrogen is a kind of strong neurotoxic substance, there is obvious spread effect to the mucous membrane of human body and respiratory tract, easily cause the damage of human body eye and respiratory tract organ, when reaching finite concentration, cause pulmonary emphysema, bronchitis, pneumonia, even occur acute poisoning, respiratory paralysis is dead.Therefore before methane-generating pit carries out leak test and maintenance, in reply pond, concentration of hydrogen sulfide detects, to ensure that the safety of leak test and maintenance personal is carried out in lower pond.
The production and application of China's biogas mainly concentrates on vast rural area, and what mainly promote the use of is household biogas mode, for single household manufactures biogas and single household use biogas.The existing methane detector of China generally all only has single index measuring ability, needs to carry multiple detector and goes to scene, select corresponding detector successively to detect according to actual needs in testing process, gives in actual use and brings a lot of inconvenience.
The utility model Portable multi-index methane detector is that a kind of dependence tests such as fire damp concentration determination, the warning of biogas leak detection, the test of methane-generating pit liquid pH value, concentration of hydrogen sulfide mensuration that collect manufactured and designed according to the actual needs in vast production and use of marsh gas use procedure work in combined test instrument all over the body.
Summary of the invention
The purpose of this utility model is: provide a kind of Portable multi-index methane detector, the dependence test work such as the fire damp concentration determination in vast production and use of marsh gas use procedure, the warning of biogas leak detection, the test of methane-generating pit liquid pH value, concentration of hydrogen sulfide mensuration can be realized simultaneously, effectively reduce equipment cost, improve the convenience of establishing use.
Technical solution of the present utility model is: described Portable multi-index methane detector is by instrument box (1), display screen (2), charging indicator light (3), under-voltage pilot lamp (4), measure pilot lamp (5), alarm lamp (6), first potentiometer (7), second potentiometer (8), 3rd potentiometer (9), switch (10), power switch (11), external power supply socket (12), air chamber cover (13), air intake opening (14), PH testing button (15), measure leak detection function switch S A2 (16), measure leak detection function switch S A1 (17), calibration switch (18), sensor lead interface (19) is formed.The in-built methane concentration of instrument box (1) measures circuit, biogas leak detection warning circuit, methane-generating pit liquid pH value metering circuit, sulfureted hydrogen gas concentration measures circuit, A/D changes and interface circuit, chargeable circuit, central processing unit, and methane concentration mensuration circuit, biogas leak detection warning circuit, methane-generating pit liquid pH value metering circuit, sulfureted hydrogen gas concentration measure circuit.Relevant parameter signal is gathered as measuring-signal end of the present utility model, the signal output part measured all is changed with A/D and is connected with the respective signal input end of interface circuit, and A/D conversion is connected with the I/O port of central processing unit with the control signal output terminal of interface circuit.Display screen, keyboard and communication interface are all connected with the corresponding I/O port of central processing unit, and serial communication interface can communicate with biogas control system, realizes more function.Chargeable circuit comprises under-voltage with overload protection and charging function.
The utility model has the following advantages:
The utility model can carry out fire damp concentration determination simultaneously, biogas leak detection is reported to the police, methane-generating pit liquid pH value is tested, concentration of hydrogen sulfide measures, and directly can show Testing index on a display screen simultaneously, make testing result directly perceived, use simply easy to operate, and access audible alarm unit and carry out audible alarm, improve the degree of safety detected, and volume is little, easy to carry, be suitable for China's methane-generating pit for farm household application.
Accompanying drawing explanation
Fig. 1 is the front schematic view of the utility model external form.
Fig. 2 is the schematic rear view of the utility model external form.
Fig. 3 is theory diagram of the present utility model.
Fig. 4 is main circuit schematic diagram of the present utility model.
In figure: 1, instrument box, 2, display screen, 3, charging indicator light, 4, under-voltage pilot lamp, 5, pilot lamp is measured, 6, alarm lamp, the 7, first potentiometer, 8, the second potentiometer, the 9, the 3rd potentiometer, 10, switch, 11, power switch, 12, external power supply socket, 13, air chamber cover, 14, air intake opening, 15, PH testing button, 16, measure leak detection function switch S A2,17, leak detection function switch S A1 is measured, 18, calibration switch, 19, sensor lead interface.
Embodiment
The utility model reaches goal of the invention by the following technical solutions: provide a kind of Portable multi-index methane detector, the dependence test work such as the fire damp concentration determination in vast production and use of marsh gas use procedure, the warning of biogas leak detection, the test of methane-generating pit liquid pH value, concentration of hydrogen sulfide mensuration can be realized simultaneously, effectively reduce equipment cost, improve the convenience of establishing use.
Fire damp concentration determination zero correction: first open the plastic air chamber lid (13) that air chamber is measured at rear portion, allow fresh air be full of and measure air chamber after about 10 minutes, turn on the power switch (11), now panel is measured pilot lamp (5) bright, leak detection function switch S A1 (17) will be measured and get to measuring position.And making it have enough pre-thermal aging time (more than 10 minutes) to ensure that " zero point " of tester has enough stability, adjustment " adjustment at zero point " the 3rd potentiometer (9), making Display panel shield registration is 000.0.
Fire damp concentration determination 50% is calibrated: calibration switch (18) is placed in open position.Adjustment " 50% calibration " the first potentiometer (7), making Display panel shield registration is 50.0.Calibration switch (18) is placed in and closes position, check that zero point is whether correct, " adjustment at zero point " the 3rd potentiometer (9) can be adjusted again if any deviation, make Display panel screen registration be 000.0.Repeat above operation again until meet the requirements.
Fire damp concentration determination: cover and measure air chamber vinyl cover (13), biogas is exported plastic pipe joint in measurement air inlet of air chamber (14), biogas is slowly sent into and measures in air chamber, when being by the time evenly full of biogas in measurement air chamber, close biogas output valve, now Display panel screen display shows a stable reading, is in biogas containing methane percentage registration.
After fire damp concentration determination terminates, remove biogas and export plastic tube, open back air chamber and export vinyl cover (13), gas indoor gas is allowed to be replaced by fresh air, the reading that Display panel shields (2) is allowed to return to 000.0 gradually, repeat " zero point correction " and " 50% calibration " step again if any error, wait for and measuring next time.
Biogas leak detection is reported to the police: (without combustible gas) turns on the power switch (11) in atmosphere, now panel is measured pilot lamp bright (5), leak detection function switch S A2 (16) will be measured and get to leak detection position, preheating 3--5 minute.Be rotated counterclockwise leak detection adjustment knob, to alarm sound, alarm lamp is bright.Slowly retrograde rotation adjustment leak detection adjustment knob, stop (warning critical point) to alerting signal, now alarm can carry out leak detection search work.Detected biogas to leak, instrument will be reported to the police, and leaves source of leaks warning horn automatic stop alarm after 10 seconds.After measurement terminates, leak detection and measurement switch are got to the position of pass.
PH value is tested: first count electrode with distilled water cleaning PH, and blotted by the moisture be attached on electrode with filter paper.Turn on the power switch (11), now panel is measured pilot lamp (5) bright, leak detection function switch S A1 (17) will be measured and get to off-position, and by PH testing button (15), PH be counted electrode and insert in fluid to be measured.Agitating solution wait for about 1 minute, reading displayed value lightly.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art and is realized.
Claims (1)
1. Portable multi-index methane detector, it is characterized in that: Portable multi-index methane detector is by instrument box (1), display screen (2), charging indicator light (3), under-voltage pilot lamp (4), measure pilot lamp (5), alarm lamp (6), first potentiometer (7), second potentiometer (8), 3rd potentiometer (9), switch (10), power switch (11), external power supply socket (12), air chamber cover (13), air intake opening (14), PH testing button (15), measure leak detection function switch S A2 (16), measure leak detection function switch S A1 (17), calibration switch (18), sensor lead interface (19) is formed, the in-built methane concentration of instrument box (1) measures circuit, biogas leak detection warning circuit, methane-generating pit liquid pH value metering circuit, sulfureted hydrogen gas concentration measures circuit, A/D conversion and interface circuit, chargeable circuit, central processing unit, methane concentration measures circuit, biogas leak detection warning circuit, methane-generating pit liquid pH value metering circuit, sulfureted hydrogen gas concentration measures circuit, measuring-signal end as Portable multi-index methane detector gathers relevant parameter signal, the signal output part measured all is changed with A/D and is connected with the respective signal input end of interface circuit, A/D conversion is connected with the I/O port of central processing unit with the control signal output terminal of interface circuit, display screen, keyboard and communication interface are all connected with the corresponding I/O port of central processing unit, serial communication interface can communicate with biogas control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825989.5U CN204330745U (en) | 2014-12-10 | 2014-12-10 | Portable multi-index methane detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420825989.5U CN204330745U (en) | 2014-12-10 | 2014-12-10 | Portable multi-index methane detector |
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| Publication Number | Publication Date |
|---|---|
| CN204330745U true CN204330745U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420825989.5U Expired - Fee Related CN204330745U (en) | 2014-12-10 | 2014-12-10 | Portable multi-index methane detector |
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| CN (1) | CN204330745U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931211A (en) * | 2015-06-25 | 2015-09-23 | 南安市绿野沼气技术开发研究所 | Biogas tank sealing performance testing device |
| CN107063774A (en) * | 2017-02-16 | 2017-08-18 | 中国石油化工股份有限公司 | Based on intrinsic safe explosion-proof gas sampling system |
| CN108020634A (en) * | 2017-12-07 | 2018-05-11 | 长沙格力暖通制冷设备有限公司 | Nitrogen gas concn detection method and device |
| CN108445165A (en) * | 2018-05-29 | 2018-08-24 | 德清县德沃工业设备安装有限公司 | A kind of Portable multiple-gas survey meter |
| CN110095153A (en) * | 2019-05-20 | 2019-08-06 | 安徽延达智能科技有限公司 | One kind ten unifies Multifunction Sensor |
-
2014
- 2014-12-10 CN CN201420825989.5U patent/CN204330745U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931211A (en) * | 2015-06-25 | 2015-09-23 | 南安市绿野沼气技术开发研究所 | Biogas tank sealing performance testing device |
| CN107063774A (en) * | 2017-02-16 | 2017-08-18 | 中国石油化工股份有限公司 | Based on intrinsic safe explosion-proof gas sampling system |
| CN108020634A (en) * | 2017-12-07 | 2018-05-11 | 长沙格力暖通制冷设备有限公司 | Nitrogen gas concn detection method and device |
| CN108445165A (en) * | 2018-05-29 | 2018-08-24 | 德清县德沃工业设备安装有限公司 | A kind of Portable multiple-gas survey meter |
| CN110095153A (en) * | 2019-05-20 | 2019-08-06 | 安徽延达智能科技有限公司 | One kind ten unifies Multifunction Sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151210 |
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| EXPY | Termination of patent right or utility model |