CN212060085U - Non-methane total hydrocarbon on-line analyzer - Google Patents
Non-methane total hydrocarbon on-line analyzer Download PDFInfo
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- CN212060085U CN212060085U CN202020643210.3U CN202020643210U CN212060085U CN 212060085 U CN212060085 U CN 212060085U CN 202020643210 U CN202020643210 U CN 202020643210U CN 212060085 U CN212060085 U CN 212060085U
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- way valve
- carrier gas
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- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 50
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 50
- 239000004215 Carbon black (E152) Substances 0.000 title abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000012159 carrier gas Substances 0.000 claims abstract description 57
- 239000007789 gas Substances 0.000 claims abstract description 40
- 210000003437 trachea Anatomy 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a non-methane total hydrocarbon on-line analyzer, which comprises a ten-way valve, a quantitative ring, a chromatographic column and a FID detector, wherein the ten-way valve has a first state and a second state which can be switched with each other; the tenth opening of the ten-way valve is a sample gas inlet, the ninth opening is a sample gas outlet, the second opening is a carrier gas inlet, the sixth opening and the fourth opening are carrier gas outlets, the first opening and the eighth opening are respectively communicated with the quantifying ring, the third opening and the seventh opening are respectively communicated with the chromatographic column, and the fourth opening is communicated with the FID detector. The utility model discloses can very conveniently detect the content of the total hydrocarbon of non-methane in the sample gas on line, simple structure, convenient operation.
Description
Technical Field
The utility model relates to a non-methane total hydrocarbon on-line analyzer.
Background
According to the current national standard (HJ604-2017), non-methane total hydrocarbons (NMHC) are defined as the residual value after methane is deducted from the total hydrocarbon measurement result, and the total hydrocarbons refer to the total sum of gaseous organic matters which generate response on a gas chromatography hydrogen flame ionization detector under the specified conditions.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a total hydrocarbon online analyzer of non-methane, it can detect the total hydrocarbon content of non-methane in the sample gas very conveniently on line, simple structure, convenient operation.
In order to solve the technical problem, the technical scheme of the utility model is that: an on-line analyzer for non-methane total hydrocarbon comprises a ten-way valve, a quantitative ring, a chromatographic column and a FID detector, wherein the ten-way valve has a first state and a second state which can be switched mutually; wherein,
the tenth opening of the ten-way valve is a sample gas inlet, the ninth opening is a sample gas outlet, the second opening is a carrier gas inlet, the sixth opening and the fourth opening are carrier gas outlets, the first opening and the eighth opening are respectively communicated with the quantitative ring, the third opening and the seventh opening are respectively communicated with the chromatographic column, and the fourth opening is communicated with the FID detector;
when the ten-way valve is in the first state, the second opening of the ten-way valve is communicated with the third opening, the fourth opening is communicated with the fifth opening, the sixth opening is communicated with the seventh opening, the eighth opening is communicated with the ninth opening, and the tenth opening is communicated with the first opening;
when the ten-way valve is in the second state, the first opening and the second opening of the ten-way valve are communicated, the third opening and the fourth opening are communicated, the fifth opening and the sixth opening are communicated, the seventh opening and the eighth opening are communicated, and the ninth opening and the tenth opening are communicated.
Further in order to improve the integration level, the on-line analyzer for non-methane total hydrocarbons further comprises a box body, and the ten-way valve, the quantitative ring and the FID detector are respectively fixed in the box body.
Further in order to make things convenient for outside sample gas sampling pipe and carrier gas conveyer pipe with ten logical valves are linked together, be provided with on the lateral wall of box at least some and stretch out the appearance trachea, go out appearance trachea, carry trachea and go out and carry the trachea of box, the tenth opening of ten logical valves with advance the appearance trachea and be linked together, the ninth opening with go out the appearance trachea and be linked together, the second opening with carry the trachea and be linked together, the sixth opening with go out and carry the trachea and be linked together.
Further to facilitate heating, the on-line analyzer for non-methane total hydrocarbons further comprises a heating device mounted in the housing and configured to heat the housing.
Further, the lateral wall of box is provided with the louvre.
Further, the on-line analyzer for the non-methane total hydrocarbons further comprises a PLC controller and a computer, wherein the input end of the PLC controller is connected with the signal output end of the FID detector, and the output end of the PLC controller is connected with the computer and is suitable for receiving the electric signal generated by the FID detector and transmitting the electric signal to the computer.
Further, in order to prevent the sample gas from being burnt insufficiently in the FID detector due to insufficient carrier gas, the on-line analyzer for non-methane total hydrocarbons further comprises a carrier gas input pipe communicated with the FID detector.
Further in order to conveniently control the carrier gas flow, the non-methane total hydrocarbon on-line analyzer also comprises a PLC (programmable logic controller), wherein a proportional valve for controlling the carrier gas flow and a pressure sensor for measuring the pressure are respectively arranged on the carrier gas input pipe and a pipeline communicated with the carrier gas inlet so as to input the carrier gas into the ten-way valve; wherein,
the pressure sensor and the proportional valve are respectively in signal connection with the PLC, and the PLC is suitable for controlling the opening of the corresponding proportional valve according to a pressure signal fed back by the pressure sensor.
Further, the on-line analyzer for the non-methane total hydrocarbons further comprises a computer, wherein the input end of the PLC is connected with the signal output end of the FID detector, the output end of the PLC is connected with the computer, and the PLC is further suitable for receiving the electric signals generated by the FID detector and transmitting the electric signals to the computer.
Further, in order to filter the carrier gas without adding external equipment, the carrier gas input pipe and the pipeline communicated with the carrier gas inlet to input the carrier gas into the ten-way valve are respectively provided with a filter.
Further, in order to provide stability and durability of the pipeline of the non-methane total hydrocarbon on-line analyzer, the pipeline connected with the ten-way valve, the pipeline connected with the quantitative ring and the pipeline connected with the FID detector are inerting pipelines.
After the technical scheme is adopted, when the on-line detection is carried out on the non-methane total hydrocarbon in the sample gas, the ten-way valve is firstly made to be in the first state, the sample gas enters the ten-way valve through the sample gas inlet, then enters the quantitative ring through the first opening of the ten-way valve, then reaches the sample gas outlet through the eighth opening, and then exits the ten-way valve, the sample gas with a specific volume is stored in the quantitative ring, meanwhile, the carrier gas enters the ten-way valve through the carrier gas inlet, and then reaches the chromatographic column through the third opening to carry out back flushing on the chromatographic column, and the carrier gas exiting the chromatographic column sequentially exits the ten-way valve through the seventh opening and the sixth opening; then with ten logical valve switching value second state, the carrier gas is in proper order through carrier gas import, first opening, ration ring, eighth opening, seventh opening arrival chromatographic column, carry the appearance gas of storage in the ration ring to the chromatographic column in simultaneously, the total hydrocarbon of non-methane in the appearance gas separates in the chromatographic column, the total hydrocarbon of non-methane who separates in the chromatographic column gets into the FID detector through third opening and fourth opening in proper order along with the carrier gas again, the FID detector changes the total hydrocarbon's of non-methane concentration that flows out the chromatographic column into the signal of telecommunication, then accomplishes the total hydrocarbon's of non-methane online analysis in the appearance gas, the utility model discloses can remove the total hydrocarbon's of non-methane content in the appearance gas very conveniently on-line measuring, the trouble of artifical on-the-spot sample has been removed, simple structure, convenient operation.
Drawings
Fig. 1 is a gas path diagram of the non-methane total hydrocarbon on-line analyzer when the ten-way valve is in the first state;
fig. 2 is a gas path diagram of the non-methane total hydrocarbon on-line analyzer when the ten-way valve is in the second state;
fig. 3 is an exploded view of the non-methane total hydrocarbon on-line analyzer of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, 2 and 3, an on-line analyzer for non-methane total hydrocarbons comprises a ten-way valve 1, a quantitative ring 2, a chromatographic column and a FID detector 3, wherein the ten-way valve 1 has a first state and a second state which can be switched with each other; wherein,
the tenth opening of the ten-way valve 1 is a sample gas inlet, the ninth opening is a sample gas outlet, the second opening is a carrier gas inlet, the sixth opening and the fourth opening are carrier gas outlets, the first opening and the eighth opening are respectively communicated with the quantitative ring 2, the third opening and the seventh opening are respectively communicated with the chromatographic column, and the fourth opening is communicated with the FID detector 3;
when the ten-way valve 1 is in the first state, the second opening and the third opening of the ten-way valve 1 are communicated, the fourth opening and the fifth opening are communicated, the sixth opening and the seventh opening are communicated, the eighth opening and the ninth opening are communicated, and the tenth opening and the first opening are communicated;
when the ten-way valve 1 is in the second state, the first opening and the second opening of the ten-way valve 1 are communicated, the third opening and the fourth opening are communicated, the fifth opening and the sixth opening are communicated, the seventh opening and the eighth opening are communicated, and the ninth opening and the tenth opening are communicated.
Specifically, when the on-line detection is performed on the non-methane total hydrocarbons in the sample gas, the ten-way valve 1 is firstly made to be in the first state, the sample gas enters the ten-way valve 1 through the sample gas inlet, then enters the quantitative ring 2 through the first opening of the ten-way valve 1, then reaches the sample gas outlet through the eighth opening, and then exits the ten-way valve 1, the sample gas with a specific volume is stored in the quantitative ring 2, meanwhile, the carrier gas enters the ten-way valve 1 through the carrier gas inlet, and reaches the chromatographic column through the third opening to perform back flushing on the chromatographic column, and the carrier gas exiting the chromatographic column sequentially exits the ten-way valve 1 through the seventh opening and the sixth opening; then switch value second state with ten way valve 1, the carrier gas is in proper order through carrier gas import, first opening, ration ring 2, eighth opening, seventh opening arrival chromatographic column, carry the appearance gas of storage in the ration ring 2 to the chromatographic column in simultaneously, the total hydrocarbon of non-methane in the appearance gas separates in the chromatographic column, the total hydrocarbon of non-methane who separates in the chromatographic column gets into FID detector 3 through third opening and fourth opening in proper order along with the carrier gas again, FID detector 3 changes the total hydrocarbon's of non-methane concentration that flows out the chromatographic column into the signal of telecommunication, then accomplishes the on-line analysis of total hydrocarbon of non-methane in the appearance gas, the utility model discloses can detect the total hydrocarbon's of non-methane content in the appearance gas very conveniently on line, the trouble of having removed artifical on-the-spot sample, simple structure, convenient operation.
As shown in fig. 3, in order to improve the integration, the non-methane total hydrocarbon on-line analyzer further includes a tank 4, and the ten-way valve 1, the quantitative ring 2, and the FID detector 3 are respectively fixed in the tank 4.
As shown in fig. 3, in order to facilitate communication between an external sample gas sampling tube and a carrier gas delivery tube and the ten-way valve 1, a sample gas inlet tube 51, a sample gas outlet tube 52, a carrier gas inlet tube 53 and a carrier gas outlet tube 54 are disposed on a side wall of the box 4, at least a portion of the sample gas inlet tube 51, the sample gas outlet tube 52, the carrier gas inlet tube 53 and the carrier gas outlet tube 54 extend out of the box 4, a tenth opening of the ten-way valve 1 is communicated with the sample gas inlet tube 51, a ninth opening is communicated with the sample gas outlet tube 52, a second opening is communicated with the carrier gas inlet tube 53, and a.
In this embodiment, to facilitate heating, the on-line analyzer for non-methane total hydrocarbons further comprises a heating device installed in the tank 4 and used for heating the tank 4.
As shown in fig. 3, the side wall of the box 4 is provided with heat dissipation holes 41.
As shown in fig. 1 and 2, the on-line analyzer for non-methane total hydrocarbons further includes a carrier gas input pipe 31 communicating with the FID detector 3 in order to prevent the sample gas from being insufficiently combusted in the FID detector 3 due to insufficient carrier gas.
As shown in fig. 1 and 2, in order to control the carrier gas flow, the on-line analyzer for non-methane total hydrocarbons further comprises a PLC controller 6, and a proportional valve 9 for controlling the carrier gas flow and a pressure sensor 8 for measuring the pressure are installed on both the carrier gas input pipe 31 and the pipe communicated with the carrier gas inlet to input the carrier gas into the ten-way valve 1; wherein,
the pressure sensor 8 and the proportional valve 9 are respectively in signal connection with the PLC 6, and the PLC 6 is suitable for controlling the opening degree of the corresponding proportional valve 9 according to the pressure signal fed back by the pressure sensor 8.
As shown in fig. 1 and 2, the online analyzer for non-methane total hydrocarbons further comprises a computer 7, wherein the input end of the PLC controller 6 is connected with the signal output end of the FID detector 3, and the output end thereof is connected with the computer 7, and is further adapted to receive the electrical signal generated by the FID detector 3 and transmit the electrical signal to the computer 7.
As shown in fig. 1 and 2, in order to filter the carrier gas without adding an external device, a filter 10 is respectively installed on the carrier gas input pipe 31 and a pipeline communicated with the carrier gas inlet to input the carrier gas into the ten-way valve 1.
In this embodiment, in order to provide stability and durability of the pipeline of the on-line analyzer for non-methane total hydrocarbons, the pipeline connected to the ten-way valve 1, the pipeline connected to the quantitative ring 2, and the pipeline connected to the FID detector 3 are inerted pipelines.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. An on-line analyzer for non-methane total hydrocarbons, which is characterized in that,
the device comprises a ten-way valve (1), a quantitative ring (2), a chromatographic column and a FID detector (3), wherein the ten-way valve (1) has a first state and a second state which can be mutually switched; wherein,
the tenth opening of the ten-way valve (1) is a sample gas inlet, the ninth opening is a sample gas outlet, the second opening is a carrier gas inlet, the sixth opening and the fourth opening are carrier gas outlets, the first opening and the eighth opening are respectively communicated with the quantifying ring (2), the third opening and the seventh opening are respectively communicated with the chromatographic column, and the fourth opening is communicated with the FID detector (3);
when the ten-way valve (1) is in a first state, a second opening and a third opening of the ten-way valve (1) are communicated, a fourth opening and a fifth opening are communicated, a sixth opening and a seventh opening are communicated, an eighth opening and a ninth opening are communicated, and a tenth opening and a first opening are communicated;
when the ten-way valve (1) is in the second state, the first opening and the second opening of the ten-way valve (1) are communicated, the third opening and the fourth opening are communicated, the fifth opening and the sixth opening are communicated, the seventh opening and the eighth opening are communicated, and the ninth opening and the tenth opening are communicated.
2. The on-line analyzer of non-methane total hydrocarbons according to claim 1,
the quantitative detection device is characterized by further comprising a box body (4), wherein the ten-way valve (1), the quantitative ring (2) and the FID detector (3) are respectively fixed in the box body (4).
3. The on-line analyzer of non-methane total hydrocarbons according to claim 2,
be provided with on the lateral wall of box (4) at least some advance kind trachea (51), go out kind trachea (52), advance year trachea (53) and go out year trachea (54) that stretch out box (4), the tenth opening of ten logical valve (1) with advance kind trachea (51) and be linked together, the ninth opening with go out kind trachea (52) and be linked together, the second opening with advance year trachea (53) and be linked together, the sixth opening with go out year trachea (54) and be linked together.
4. The on-line analyzer of non-methane total hydrocarbons according to claim 2,
the heating device is arranged in the box body (4) and used for heating the box body (4).
5. The on-line analyzer of non-methane total hydrocarbons according to claim 4,
the side wall of the box body (4) is provided with heat dissipation holes (41).
6. The on-line analyzer of non-methane total hydrocarbons according to claim 1,
and a carrier gas input pipe (31) communicated with the FID detector (3).
7. The on-line analyzer of non-methane total hydrocarbons according to claim 6,
the device also comprises a PLC (programmable logic controller) (6), wherein a carrier gas input pipe (31) and a pipeline communicated with the carrier gas inlet to input carrier gas into the ten-way valve (1) are provided with a proportional valve (9) for controlling the flow of the carrier gas and a pressure sensor (8) for measuring pressure; wherein,
the pressure sensor (8) and the proportional valve (9) are respectively in signal connection with the PLC (6), and the PLC (6) is suitable for controlling the opening degree of the corresponding proportional valve (9) according to a pressure signal fed back by the pressure sensor (8).
8. The on-line analyzer of non-methane total hydrocarbons according to claim 7,
the device is characterized by further comprising a computer (7), wherein the input end of the PLC (6) is connected with the signal output end of the FID detector (3), the output end of the PLC is connected with the computer (7), and the PLC is suitable for receiving an electric signal generated by the FID detector (3) and transmitting the electric signal to the computer (7).
9. The on-line analyzer of non-methane total hydrocarbons according to claim 6,
and the carrier gas input pipe (31) and a pipeline communicated with the carrier gas inlet to input carrier gas into the ten-way valve (1) are respectively provided with a filter (10).
10. The on-line analyzer of non-methane total hydrocarbons according to claim 1,
and the pipeline connected with the ten-way valve (1), the pipeline connected with the quantitative ring (2) and the pipeline connected with the FID detector (3) are inerting pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020643210.3U CN212060085U (en) | 2020-04-24 | 2020-04-24 | Non-methane total hydrocarbon on-line analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020643210.3U CN212060085U (en) | 2020-04-24 | 2020-04-24 | Non-methane total hydrocarbon on-line analyzer |
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| Publication Number | Publication Date |
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| CN212060085U true CN212060085U (en) | 2020-12-01 |
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|---|---|---|---|
| CN202020643210.3U Active CN212060085U (en) | 2020-04-24 | 2020-04-24 | Non-methane total hydrocarbon on-line analyzer |
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| CN (1) | CN212060085U (en) |
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2020
- 2020-04-24 CN CN202020643210.3U patent/CN212060085U/en active Active
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Address after: 213000 No.18 Xinya Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: Changzhou Daheng Purification Technology Co.,Ltd. Country or region after: China Address before: 213000 No.18 Xinya Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU DAHENG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Country or region before: China |