CN212845223U - Sensitivity compensation device for hydrogen flame ionization detector - Google Patents
Sensitivity compensation device for hydrogen flame ionization detector Download PDFInfo
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- CN212845223U CN212845223U CN202021435008.8U CN202021435008U CN212845223U CN 212845223 U CN212845223 U CN 212845223U CN 202021435008 U CN202021435008 U CN 202021435008U CN 212845223 U CN212845223 U CN 212845223U
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000001257 hydrogen Substances 0.000 title claims abstract description 70
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 70
- 230000035945 sensitivity Effects 0.000 title claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 161
- 239000012159 carrier gas Substances 0.000 claims abstract description 31
- 239000002737 fuel gas Substances 0.000 claims abstract description 18
- 238000005070 sampling Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Abstract
The utility model discloses a hydrogen flame ionization detector sensitivity compensation arrangement, carrier gas air supply, combustion-supporting gas air supply are connected through gas pipeline, gas pipeline and combustion-supporting gas pipeline respectively hydrogen flame ionization detector, sampling system with piece-rate system locates the gas carrier pipeline, sampling system provides the appearance gas, and sensitivity compensation arrangement includes: the gas compensation gas source is connected with the hydrogen flame ionization detector through a gas compensation pipeline; the combustion-supporting gas compensation gas source is connected with the hydrogen flame ionization detector through a combustion-supporting gas compensation pipeline; and compensating fuel gas or combustion-supporting gas for the hydrogen flame ionization detector through the fuel gas compensation gas source or the combustion-supporting gas compensation gas source so as to adjust the ratio of the fuel gas to the combustion-supporting gas in the hydrogen flame ionization detector and improve the sensitivity of the hydrogen flame ionization detector. The device can compensate the sensitivity of the detector in the analysis and detection process, and improve the analysis and detection efficiency and the accuracy of an analysis result.
Description
Technical Field
The utility model belongs to the technical field of detecting instrument, especially, relate to a hydrogen flame ionization detector sensitivity compensation arrangement.
Background
With the continuous development of the technical field of analysis and detection, the gas chromatograph plays an important role in ensuring the normal operation of industrial production, improving the product quality, protecting and detecting the environment and the like, and is widely applied to the fields of petrochemical industry, biochemistry, environmental detection, medicine and health and the like.
The hydrogen flame ionization detector is one of the most commonly used detectors in the gas chromatograph, the sensitivity of the hydrogen flame ionization detector directly determines the practical application capability of the gas chromatograph, the efficiency and the practical output benefit of various types of analysis work such as safety control analysis, product quality analysis, production process detection analysis, raw material inspection analysis and the like are directly influenced, and the analysis detection speed, the accuracy of analysis results and the degree of realizing the automation of the production process are also influenced.
The existing technical scheme has strong pertinence and has certain advantages in a specific use scene. But the applicability is poor, the conditions that various specifications of sample introduction systems and carrier gas systems can be realized are not involved, and the compensation in the whole analysis and detection process is not considered.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention provides a sensitivity compensation device for a hydrogen flame ionization detector, which can compensate the sensitivity of the detector in the analysis and detection process, thereby improving the accuracy of the analysis and detection efficiency and the analysis result.
In order to achieve the above purpose, the technical scheme of the utility model is that:
the utility model provides a hydrogen flame ionization detector sensitivity compensation arrangement, includes hydrogen flame ionization detector, sampling system, piece-rate system, carrier gas air supply, combustion-supporting gas air supply, the carrier gas air supply the gas air supply combustion-supporting gas air supply is connected through carrier gas pipeline, gas pipeline and combustion-supporting gas pipeline respectively hydrogen flame ionization detector, sampling system with piece-rate system locates the carrier gas pipeline includes:
the gas compensation gas source is connected with the hydrogen flame ionization detector through a gas compensation pipeline;
the combustion-supporting gas compensation gas source is connected with the hydrogen flame ionization detector through a combustion-supporting gas compensation pipeline;
and compensating fuel gas or combustion-supporting gas for the hydrogen flame ionization detector through the fuel gas compensation gas source or the combustion-supporting gas compensation gas source so as to adjust the ratio of the fuel gas to the combustion-supporting gas in the hydrogen flame ionization detector and improve the sensitivity of the hydrogen flame ionization detector.
According to the utility model discloses an embodiment, including the cross joint, the carrier gas pipeline is connected the first interface of cross joint, the gas pipe connection the second interface of cross joint, the gas compensation pipeline with the combustion-supporting gas compensation pipeline is all connected the third interface of cross joint, the fourth interface of cross joint is through first tube coupling the hydrogen flame ionization detector.
According to the utility model discloses an embodiment, including three way solenoid valve, the gas compensation pipeline with the combustion-supporting gas compensation pipeline is connected respectively two imports of three way solenoid valve, three way solenoid valve's export is passed through the second tube coupling four way connection's third interface.
According to the utility model discloses an embodiment, the second pipeline is equipped with electron pressure controller or electron flow controller.
According to the utility model discloses an embodiment, the second pipeline is equipped with the current-limiting pipe.
According to the utility model discloses an embodiment, the gas is hydrogen, the combustion-supporting gas is the air.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
(1) the embodiment of the utility model provides an in set up gas compensation air supply and combustion-supporting gas compensation air supply to make at hydrogen flame ionization detector analysis and detection in-process real-time compensation gas or combustion-supporting gas, make the proportion of gas and combustion-supporting gas reach the best proportion all the time, so that its sensitivity remains the best all the time.
(2) The embodiment of the utility model provides an in set up four way connection for carrier gas, appearance gas, compensation gas and compensation combustion-supporting gas just have mixed before getting into hydrogen flame ionization detector, make the error that causes littleer, and can improve detection efficiency.
(3) The embodiment of the utility model provides an in set up electron pressure controller and electron flow controller, can control the flow of compensation gas and compensation combustion-supporting gas, make the volume to hydrogen flame ionization detector compensation more accurate, improved efficiency and sensitivity.
(4) The embodiment of the utility model provides an in set up the current-limiting pipe, carry out compensation control and provide gas flow path to the flow of compensation gas and compensation combustion-supporting gas, further improved control accuracy, make sensitivity compensation more accurate.
Drawings
The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:
fig. 1 is an overall schematic diagram of the sensitivity compensation device of the hydrogen flame ionization detector of the present invention.
Description of reference numerals:
1: a hydrogen flame ionization detector; 2: a sample introduction system; 3: a separation system; 4: a carrier gas source; 5: a gas source; 6: a combustion-supporting gas source; 7: a carrier gas line; 8: a gas pipeline; 9: a combustion-supporting gas pipeline; 10: a gas compensation gas source; 11: a gas compensation pipeline; 12: a combustion-supporting gas compensation gas source; 13: a combustion-supporting gas compensation pipeline; 14: a four-way joint; 15: a three-way electromagnetic valve; 16: an electronic pressure controller or an electronic flow controller; 17: a current limiting pipe; 18: a first pipeline; 19: a second pipeline.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It is to be noted that the drawings are in a very simplified form and are not to be construed as precise ratios as are merely intended to facilitate and distinctly illustrate the embodiments of the present invention.
Referring to fig. 1, the core of the utility model is to provide a hydrogen flame ionization detector sensitivity compensation arrangement, including hydrogen flame ionization detector 1(FID), sampling system 2, piece-rate system 3, carrier gas air supply 4, gas air supply 5, combustion-supporting gas air supply 6, sensitivity compensation arrangement includes gas compensation air supply 10 and combustion-supporting gas compensation air supply 12, in hydrogen flame ionization detector 1 analysis and detection process, compensate gas or combustion-supporting gas through gas compensation air supply 10 and combustion-supporting gas compensation air supply 12 in real time, make the proportion of gas and combustion-supporting gas reach the optimum proportion all the time, so that its sensitivity remains the best all the time, reached the purpose to hydrogen flame ionization detector 1 sensitivity compensation, improved the accuracy of analysis and detection efficiency and analysis result.
Hydrogen flame ionization detector 1, sampling system 2, piece-rate system 3, carrier gas air supply 4, gas air supply 5 and combustion-supporting gas air supply 6 are a part of gas chromatograph, that is to say the utility model discloses a based on the gas chromatograph of hydrogen flame ionization detector 1 type, gas chromatograph is for using as mobile phase, and the difference of effort such as distribution adsorption between component and the stationary phase realizes a separation technique of complicated sample separation. The hydrogen flame ionization detector 1 is a device that generates an electric signal under the action of an electric field by ions generated when organic matter is burned in a hydrogen flame. The carrier gas is the gas that carries the sample through the entire detection system in a mobile phase.
The carrier gas source 4 is used for providing carrier gas, the fuel gas source 5 and the combustion-supporting gas source 6 are used for providing fuel gas and combustion-supporting gas for combustion, and the sample gas to be detected is provided by the sample injection system 2 and then is conveyed through the carrier gas carrier tape. The carrier gas source 4, the gas source 5 and the combustion-supporting gas source 6 are respectively connected with the hydrogen flame ionization detector 1 through a carrier gas pipeline 7, a gas pipeline 8 and a combustion-supporting gas pipeline 9, and the sample introduction system 2 and the separation system 3 are arranged on the carrier gas pipeline 7.
The gas compensation gas source 10 is an additionally arranged gas source, is connected with the hydrogen flame ionization detector 1 through a gas compensation pipeline 11, and is used for providing additional compensation gas for the hydrogen flame ionization detector 1 in the analysis and detection process so as to adjust the proportion of the gas and the combustion-supporting gas,
the combustion-supporting gas compensation gas source 12 is also an additionally arranged gas source, is connected with the hydrogen flame ionization detector 1 through a combustion-supporting gas compensation pipeline 13, and is used for providing additional combustion-supporting gas for compensation in the analysis and detection process of the hydrogen flame ionization detector 1 so as to adjust the proportion of fuel gas and combustion-supporting gas.
In the embodiment, the fuel gas is hydrogen gas, the combustion-supporting gas is air, and a certain amount of fuel gas or combustion-supporting gas is compensated and introduced into the hydrogen flame ionization detector 1 by selecting the fuel gas compensation gas source 10 or the combustion-supporting gas compensation gas source 12 according to the real-time flow ratio of the hydrogen gas and the air in the working process of the hydrogen flame ionization detector 1, so that the optimal hydrogen-air ratio is achieved in the hydrogen flame ionization detector 1, the hydrogen flame ionization detector 1 is always kept at the optimal sensitivity, the detection is more accurate, and the calibration and detection efficiency is higher.
Specifically, the hydrogen flame ionization detector comprises a four-way joint 14 and a three-way electromagnetic valve 15, wherein a carrier gas pipeline 7 is connected with a first interface of the four-way joint 14, a gas pipeline 8 is connected with a second interface of the four-way joint 14, a gas compensation pipeline 11 and a combustion-supporting gas compensation pipeline 13 are respectively connected with two inlets of the three-way electromagnetic valve 15, an outlet of the three-way electromagnetic valve 15 is connected with a third interface of the four-way joint 14 through a second pipeline 19, and a fourth interface of the four-way joint 14 is connected with the hydrogen flame ionization detector 1 through a first pipeline 18.
That is, the type of gas of the compensation gas source is selected through the three-way solenoid valve 15, and then the compensation gas source is connected with the FID original gas path through the four-way joint 14.
Further, an Electronic Pressure Controller (EPC) or an Electronic Flow Controller (EFC) and a flow-limiting tube 17 are sequentially provided on the second line 19 from the three-way solenoid valve 15 to the fourth port. The electronic pressure controller or the electronic flow controller 16 can control the flow of the compensation fuel gas and the compensation combustion-supporting gas, so that the compensation amount of the hydrogen flame ionization detector 1 is more accurate, the efficiency and the sensitivity are improved, and one of the two is selected, namely, the electronic pressure controller or the electronic flow controller is selected. The flow limiting pipe 17 is a pipe with a pipe diameter smaller than that of the second pipe 19, the pipe diameter is suddenly reduced to play a role in limiting flow, compensation control can be performed on the flow of compensation gas and compensation combustion-supporting gas, a gas flow path is provided, the control accuracy is further improved, and sensitivity compensation is more accurate.
The working process of the present invention is further explained as follows:
when the hydrogen flame ionization detector 1 works normally, the gas source 5 and the combustion-supporting gas source 6 respectively provide hydrogen and air to maintain the FID in an ignition state and ensure that the FID is in a normal working state.
The sample introduction system 2 provides sample gas required by analysis and detection, the carrier gas source 4 provides carrier gas to push the sample gas to flow in the carrier gas pipeline 7, the first pipeline 18 and the hydrogen flame ionization detector 1, and the separation system 3 separates components of the sample gas and then flows through the four-way joint 14 under the push of the carrier gas.
The gas compensation gas source 10 or the combustion-supporting gas compensation gas source 12 compensates gas or combustion-supporting gas for the hydrogen flame ionization detector 1, judges the type of compensation gas required for achieving the optimal hydrogen-air ratio according to the type of carrier gas and the real-time flow proportion of hydrogen and air, selects the gas type through the three-way electromagnetic valve 15, flows into the EPC/EFC for flow regulation, and controls the gas to flow through the four-way joint 14 through flow compensation of the flow limiting pipe 17.
The hydrogen provided by the gas source 5 also flows through the four-way joint 14, and the four-way joint 14 mixes the carrier gas, the sample gas, the hydrogen and the compensated hydrogen or air and then enters the FID to complete the compensation of the FID detection sensitivity and carry out analysis and detection.
The utility model discloses compensation air supply has been added all the way in FID air supply entrance for gas and combustion-supporting gas proportion reach the best, thereby compensate FID sensitivity, and can compensate under the gas chromatograph is in any functional state of normal during operation. Supporting various specifications of sample introduction systems 2 and gas carrying systems, and improving the working efficiency and the output benefit when the FID is used for analysis and detection. The reliability of the whole analysis and detection is improved on the whole, and the service life of the instrument is prolonged.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (6)
1. The utility model provides a hydrogen flame ionization detector sensitivity compensation arrangement, includes hydrogen flame ionization detector, sampling system, piece-rate system, carrier gas air supply, combustion-supporting gas air supply, the carrier gas air supply the gas air supply combustion-supporting gas air supply is respectively through carrier gas pipeline, gas pipeline and combustion-supporting gas pipe connection the hydrogen flame ionization detector, sampling system with piece-rate system locates the carrier gas pipeline, sampling system provides the appearance gas, its characterized in that, sensitivity compensation arrangement includes:
the gas compensation gas source is connected with the hydrogen flame ionization detector through a gas compensation pipeline;
the combustion-supporting gas compensation gas source is connected with the hydrogen flame ionization detector through a combustion-supporting gas compensation pipeline;
and compensating fuel gas or combustion-supporting gas for the hydrogen flame ionization detector through the fuel gas compensation gas source or the combustion-supporting gas compensation gas source so as to adjust the ratio of the fuel gas to the combustion-supporting gas in the hydrogen flame ionization detector and improve the sensitivity of the hydrogen flame ionization detector.
2. The device for compensating the sensitivity of the hydrogen flame ionization detector according to claim 1, comprising a four-way joint, wherein the carrier gas pipeline is connected with a first interface of the four-way joint, the gas pipeline is connected with a second interface of the four-way joint, the gas compensation pipeline and the combustion-supporting gas compensation pipeline are both connected with a third interface of the four-way joint, and a fourth interface of the four-way joint is connected with the hydrogen flame ionization detector through the first pipeline.
3. The sensitivity compensation device for the hydrogen flame ionization detector according to claim 2, comprising a three-way electromagnetic valve, wherein the fuel gas compensation pipeline and the combustion-supporting gas compensation pipeline are respectively connected with two inlets of the three-way electromagnetic valve, and an outlet of the three-way electromagnetic valve is connected with a third interface of the four-way joint through a second pipeline.
4. The hydrogen flame ionization detector sensitivity compensation apparatus of claim 3, wherein the second conduit is provided with an electronic pressure controller or an electronic flow controller.
5. The hydrogen flame ionization detector sensitivity compensation apparatus of claim 3, wherein the second conduit is provided with a flow restriction tube.
6. The hydrogen flame ionization detector sensitivity compensation device of claim 1, wherein the fuel gas is hydrogen gas and the combustion-supporting gas is air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021435008.8U CN212845223U (en) | 2020-07-20 | 2020-07-20 | Sensitivity compensation device for hydrogen flame ionization detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021435008.8U CN212845223U (en) | 2020-07-20 | 2020-07-20 | Sensitivity compensation device for hydrogen flame ionization detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212845223U true CN212845223U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021435008.8U Active CN212845223U (en) | 2020-07-20 | 2020-07-20 | Sensitivity compensation device for hydrogen flame ionization detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212845223U (en) |
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2020
- 2020-07-20 CN CN202021435008.8U patent/CN212845223U/en active Active
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Address after: 310053 Room 301, floor 3, building 3, No. 611, Dongguan Road, Binjiang District, Hangzhou, Zhejiang Province Patentee after: Zhongkong Quanshi Technology (Hangzhou) Co.,Ltd. Address before: 310053 Room B3155, 3rd floor, 368 Liuhe Road, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG TRACETECH TECHNOLOGY CO.,LTD. |
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