CN108287216B - High-sensitivity hydrogen sulfide gas detector - Google Patents
High-sensitivity hydrogen sulfide gas detector Download PDFInfo
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- CN108287216B CN108287216B CN201711353741.8A CN201711353741A CN108287216B CN 108287216 B CN108287216 B CN 108287216B CN 201711353741 A CN201711353741 A CN 201711353741A CN 108287216 B CN108287216 B CN 108287216B
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- 239000007789 gas Substances 0.000 title claims abstract description 101
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 claims abstract description 62
- 239000002341 toxic gas Substances 0.000 claims abstract description 42
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 239000000523 sample Substances 0.000 claims abstract description 14
- 230000035945 sensitivity Effects 0.000 abstract description 17
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000003211 malignant effect Effects 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 231100000614 poison Toxicity 0.000 description 3
- 239000003440 toxic substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004429 Calibre Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention relates to the technical field of gas detection, and discloses a high-sensitivity hydrogen sulfide gas detector which comprises a motor, a turbine and a toxic gas concentration monitoring box, wherein the turbine comprises a shell, a horn-shaped air inlet port arranged on the upper end face of the shell and provided with an upward opening, an impeller arranged in the shell and a large-caliber gas transmission port, a rotating shaft of the impeller is connected with an output shaft of the motor, the gas transmission port is positioned at the other end of the rotating shaft of the impeller and communicated with the side face of the shell, the toxic gas concentration monitoring box comprises an internal detection cavity and a hydrogen sulfide gas concentration detection probe arranged in the detection cavity, and one end, far away from the turbine, of the gas transmission port is communicated with the detection cavity High sensitivity.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a high-sensitivity hydrogen sulfide gas detector.
Background
Hydrogen sulfide is one of the toxic gas that generates in the industrial production, belong to inflammable and toxic hazardous gas, generally adopt the toxic gas detector to carry out concentration detection, present toxic gas detector, receive the restriction of instrument self to toxic gas detection concentration lower limit, reveal the initial stage at the toxic gas, because toxic gas concentration is low, the instrument can't detect the little of low concentration and reveal, thereby can't realize early warning in advance, the toxic gas concentration detector that often uses at present stage is to wait to detect gas and pass through monitor probe behind the air duct air guide, realize concentration detection, this type of method is influenced by external environment greatly, and high to toxic gas detection concentration lower limit, the testing result is not accurate enough, for example: chinese patent application publication No. CN104931657A, application publication date 2015, 9, 23, inventing a detection device for detecting toxic gas in air, which is named as western medicine production, and comprises a detection device main body, a main body reinforcing block and a main console support, and has the disadvantages that the device fuses toxic gas into an air melting water tank and detects toxic substances in the air melting water tank, and the method cannot completely fuse the toxic substances in the air into water, so that the obtained detection result is small, the lower limit of the detection concentration of the toxic gas is high, and the detection result is not accurate enough.
Disclosure of Invention
The invention provides a hydrogen sulfide gas detector which can greatly improve the detection sensitivity of the concentration of hydrogen sulfide gas, realize early warning and avoid high sensitivity of malignant accidents in order to solve the defects of high lower limit of the detection concentration of hydrogen sulfide gas and inaccurate detection result in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high sensitivity's hydrogen sulfide gas detector, includes motor, turbine and poison gas concentration monitoring box, the turbine includes the casing, locates the ascending tubaeform inlet port of casing up end opening, locates the impeller of casing and the gas transmission port of heavy-calibre, the axis of rotation of impeller is connected with the output shaft of motor, the gas transmission port is located the other end of the axis of rotation of impeller and is linked together with the side of casing, poison gas concentration monitoring box includes inside detection chamber and locates the hydrogen sulfide gas concentration test probe that detects the intracavity, the one end that the turbine was kept away from to the gas transmission port is linked together with the detection chamber. The invention firstly compresses low-concentration air with micro-leakage of toxic gas by a turbocharging device to greatly improve the concentration of hydrogen sulfide gas and then detects the low-concentration air, thereby greatly improving the sensitivity of an instrument for detecting the concentration of the hydrogen sulfide gas, realizing early warning and avoiding malignant accidents, the invention drives an impeller in a turbine to rotate by the rotation of a motor, the gas to be detected is sucked from a gas inlet port arranged on the upper end surface of a shell, the gas inlet port with an upward horn-shaped opening can improve the gas inlet amount and improve the gas inlet efficiency, the concentration of the hydrogen sulfide gas is greatly increased after the sucked gas to be detected is compressed and pressurized by the impeller, the gas to be detected is conveyed from a gas conveying port at the other end of the turbine into a detection cavity in a toxic gas concentration monitoring box for detection, and the flow rate of the gas to be detected can be reduced by a gas conveying port with large, the gas concentration detection probe arranged in the detection cavity detects the compressed and pressurized gas to be detected, and the concentration of toxic substances in the gas to be detected is greatly increased due to the compression and pressurization effects of the turbine, so that the gas concentration detection probe is easier to detect, the sensitivity of the gas concentration detection probe for the hydrogen sulfide gas is greatly improved, early warning is realized, and malignant accidents are avoided.
Preferably, the upper surface of the toxic gas concentration monitoring box is provided with a control display end screen, and the control display end screen is electrically connected with the hydrogen sulfide gas concentration detection probe. The control display end screen is used for displaying and recording the change and the numerical value of the concentration of the toxic gas in the air in real time, and is convenient for recording and managing.
Preferably, the side surface of the toxic gas concentration monitoring box is provided with a toxic gas diffusion hole. The toxic gas diffusion holes are used for slowly diffusing and dredging the measurement gas.
Preferably, an alarm device is arranged on the side surface of the toxic gas concentration monitoring box, and the control display end screen is electrically connected with the alarm device. When the concentration of the hydrogen sulfide gas detected by the toxic gas concentration monitoring box reaches a rated value, the display end screen is controlled to control the alarm device to send out a danger alarm to inform workers to process.
Preferably, a base is arranged at the lower end of the shell. The base can fix the invention on the ground or wall surface and other complex measuring environments, and the use is safer and more flexible.
Preferably, the detection cavity is ellipsoidal in shape. The ellipsoid shape can buffer the gas to be detected, reduce the flow velocity of the gas to be detected, and make the gas to be detected stay in the detection cavity for a longer time, so that the detection is more sufficient, and the detection sensitivity is further improved
Preferably, a separation net is detachably connected to the outer end face of the air inlet port. The detachable connected separation net can prevent sundries from entering the air inlet port to influence the detection result, and the use is safer and more accurate.
Therefore, the hydrogen sulfide gas detector with high sensitivity of the invention has the following advantages: the method can greatly improve the detection sensitivity of the concentration of the hydrogen sulfide gas, realize early warning and avoid high sensitivity of malignant accidents.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an air flow diagram within the detection chamber.
Wherein: the device comprises a motor 1, a turbine 2, a toxic gas concentration monitoring box 3, a shell 4, an air inlet port 5, an air delivery port 6, a detection cavity 7, a hydrogen sulfide gas concentration detection probe 8, gas to be detected 9, a control display end screen 10, a toxic gas diffusion hole 11, an alarm device 12 and a base 13.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
As shown in fig. 1 and 2, the hydrogen sulfide gas detector with high sensitivity comprises:
the utility model provides a hydrogen sulfide gas detector of high sensitivity, including motor 1, turbine 2 and poison gas concentration monitoring box 3, the turbine includes casing 4, locate the ascending loudspeaker form inlet port 5 of casing up end opening, locate impeller and the defeated gas port 6 of heavy-calibre in the casing, the axis of rotation of impeller is connected with the output shaft of motor, the defeated gas port is located the other end of the axis of rotation of impeller and is linked together with the side of casing, poison gas concentration monitoring box includes inside detection chamber 7 and locates the hydrogen sulfide gas concentration detection probe 8 that detects the intracavity, the one end that the turbine was kept away from to the defeated gas port is linked together with the detection chamber. The invention firstly compresses low-concentration air with micro-leakage of hydrogen sulfide gas by a turbocharging device to greatly improve the concentration of the hydrogen sulfide gas and then detects the low-concentration air, thereby greatly improving the sensitivity of an instrument for detecting the concentration of the hydrogen sulfide gas, realizing early warning and avoiding malignant accidents, the invention drives an impeller in a turbine to rotate by the rotation of a motor, the gas 9 to be detected is sucked from a gas inlet port arranged on the upper end surface of a shell, the gas inlet port with an upward horn-shaped opening can improve the gas inlet amount and improve the gas inlet efficiency, after the sucked gas to be detected is compressed and pressurized by the impeller, the concentration of the hydrogen sulfide gas is greatly increased and is conveyed from a gas conveying port at the other end of the turbine to a detection cavity in a toxic gas concentration monitoring box for detection, and the gas conveying port with large caliber can reduce the flow rate of the gas to be detected, the gas detector can stay in a toxic gas concentration monitoring box for a longer time to enable the detection to be more sufficient, the toxic gas concentration detection probe arranged in the detection cavity is used for detecting the compressed and pressurized gas to be detected, the concentration of the hydrogen sulfide gas of the gas to be detected is greatly increased due to the compression and pressurization effects of the turbine, the detection probe of the concentration of the hydrogen sulfide gas is easier to detect, for example, when the turbine is in a static state, the detection resolution of the hydrogen sulfide gas is approximately the same as that of a hydrogen sulfide detector used in the market and is 1PPM (PPM per million parts per million), in the embodiment, if the compression effect of the turbine is adjusted to 0.7 MPa (about 7 standard atmospheric pressures), the volume of the gas to be detected is compressed by nearly 7 times, the concentration of the hydrogen sulfide gas is increased by 7 times along with the original concentration of the hydrogen sulfide gas, the detection resolution of the hydrogen sulfide gas can be changed into 7 times before the uncompressed gas to, therefore, the sensitivity of the invention to the detection of the concentration of the hydrogen sulfide gas is greatly improved, early warning is realized, and the occurrence of malignant accidents is avoided. The upper surface of the poison gas concentration monitoring box is provided with a control display end screen 10 which is electrically connected with the hydrogen sulfide gas concentration detection probe. The control display end screen is used for displaying and recording the change and the numerical value of the concentration of the hydrogen sulfide gas in the air in real time, and is convenient for recording and managing. The side of the toxic gas concentration monitoring box is provided with a toxic gas diffusion hole 11. The toxic gas diffusion holes are used for slowly diffusing and dredging the measurement gas. And an alarm device 12 is arranged on the side surface of the toxic gas concentration monitoring box, and the control display end screen is electrically connected with the alarm device. When the concentration of the hydrogen sulfide gas detected by the toxic gas concentration monitoring box reaches a rated value, the display end screen is controlled to control the alarm device to send out a danger alarm to inform workers to process. The lower end of the shell is provided with a base 13. The base can fix the invention on the ground or wall surface and other complex measuring environments, and the use is safer and more flexible. The detection cavity is in an ellipsoid shape. The ellipsoid shape can buffer the gas to be detected, reduce the flow velocity of the gas to be detected, and enable the gas to be detected to stay in the detection cavity for a longer time, so that the detection is more sufficient, and the detection sensitivity is further improved. The outer end face of the air inlet port is detachably connected with a separation net. The detachable connected separation net can prevent sundries from entering the air inlet port to influence the detection result, and the use is safer and more accurate.
The high-sensitivity hydrogen sulfide gas detector has the beneficial effects of greatly improving the detection sensitivity of the concentration of the hydrogen sulfide gas, realizing early warning and avoiding high sensitivity of malignant accidents.
Claims (4)
1. A high-sensitivity hydrogen sulfide gas detector is characterized by comprising a motor, a turbine and a toxic gas concentration monitoring box, wherein the turbine comprises a shell, a horn-shaped air inlet port, an impeller and a large-caliber air delivery port, the horn-shaped air inlet port is formed in the upper end face of the shell, the impeller is arranged in the shell, the large-caliber air delivery port is formed in the shell, one end of a rotating shaft of the impeller is connected with an output shaft of the motor, the air delivery port is located at the other end of the rotating shaft of the impeller and is communicated with the side face of the shell, the toxic gas concentration monitoring box comprises an internal detection cavity and a hydrogen sulfide gas concentration detection probe arranged in the detection cavity, one end, far away from the turbine, of the air delivery port is communicated with the detection cavity; gas to be detected is sucked from a gas inlet port arranged on the upper end face of the shell, the concentration of hydrogen sulfide gas is greatly increased after the sucked gas to be detected is compressed and pressurized by the impeller, and the gas is conveyed into a detection cavity in the toxic gas concentration monitoring box from a gas conveying port at the other end of the turbine for detection.
2. The high-sensitivity hydrogen sulfide gas detector as claimed in claim 1, wherein the upper surface of the toxic gas concentration monitoring box is provided with a control display screen, and the control display screen is electrically connected with the hydrogen sulfide gas concentration detection probe.
3. The high-sensitivity hydrogen sulfide gas detector as claimed in claim 2, wherein an alarm device is disposed on a side surface of the toxic gas concentration monitoring box, and the control display end screen is electrically connected to the alarm device.
4. The highly sensitive hydrogen sulfide gas detector as claimed in claim 1, wherein a base is provided at a lower end of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353741.8A CN108287216B (en) | 2017-12-15 | 2017-12-15 | High-sensitivity hydrogen sulfide gas detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711353741.8A CN108287216B (en) | 2017-12-15 | 2017-12-15 | High-sensitivity hydrogen sulfide gas detector |
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| Publication Number | Publication Date |
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| CN108287216A CN108287216A (en) | 2018-07-17 |
| CN108287216B true CN108287216B (en) | 2020-03-03 |
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| CN201711353741.8A Active CN108287216B (en) | 2017-12-15 | 2017-12-15 | High-sensitivity hydrogen sulfide gas detector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113484470B (en) * | 2021-07-01 | 2023-07-04 | 浙江始祖鸟环境工程有限公司 | High-sensitivity hydrogen sulfide gas detector |
| CN115407031A (en) * | 2022-10-31 | 2022-11-29 | 广东惠丰达电气设备有限公司 | Gas component detection device for improving sensitivity by pressurizing concentrated gas |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2175287A5 (en) * | 1972-03-08 | 1973-10-19 | Degremont | Experimental flotation cell - testing small batches to establish parameters for ind treatment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2671406B1 (en) * | 1991-01-09 | 1997-01-31 | Chamrceun Rith Am | ALARM STATE DETECTOR AS A DANGEROUS CONCENTRATION DETECTOR IN HARMFUL GASES IN A MEDIUM. |
| GB2382847A (en) * | 2001-12-06 | 2003-06-11 | Alstom | Gas turbine wet compression |
| CN204556559U (en) * | 2015-05-16 | 2015-08-12 | 刘青 | Sulfuretted hydrogen safe concentration value detecting device |
| CN106710152A (en) * | 2016-12-30 | 2017-05-24 | 浙江海洋大学 | Engineering explosion formed toxic gas monitoring early warning system design |
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- 2017-12-15 CN CN201711353741.8A patent/CN108287216B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2175287A5 (en) * | 1972-03-08 | 1973-10-19 | Degremont | Experimental flotation cell - testing small batches to establish parameters for ind treatment |
Non-Patent Citations (1)
| Title |
|---|
| 压缩天然气(CNG)加气站安全监控系统;桑海泉等;《中国安全科学学报》;20091130;159-164 * |
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