CN208313911U - A kind of hydrogen isotope analysis special-purpose gas chromatograph - Google Patents

A kind of hydrogen isotope analysis special-purpose gas chromatograph Download PDF

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Publication number
CN208313911U
CN208313911U CN201821019508.6U CN201821019508U CN208313911U CN 208313911 U CN208313911 U CN 208313911U CN 201821019508 U CN201821019508 U CN 201821019508U CN 208313911 U CN208313911 U CN 208313911U
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way valve
interface
hydrogen isotope
gas chromatograph
chromatographic column
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CN201821019508.6U
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赵雪
杨东才
孙海山
崔贺民
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DALIAN ZHONGHUIDA SCIENTIFIC INSTRUMENT Co Ltd
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DALIAN ZHONGHUIDA SCIENTIFIC INSTRUMENT Co Ltd
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Abstract

The utility model discloses a kind of hydrogen isotope analysis special-purpose gas chromatographs, comprising: six-way valve A, six-way valve B, counterbalance valve, low temperature liquid nitrogen tank, chromatographic column, TCD detector, chromatographic work station, quantitative loop;Quantitative loop is equipped between c interface and f interface in the six-way valve A;B interface in the six-way valve A is connected with the h interface in six-way valve B, i interface in the six-way valve B is connected to chromatographic work station by TCD detector, n interface in six-way valve B is connected with one end of chromatographic column, the other end of the chromatographic column is connected with the j interface in six-way valve B, the chromatographic column is placed in low temperature liquid nitrogen tank, and the counterbalance valve is connected to the m interface in six-way valve B.The application, which has, to be reduced labour cost, the energy saving service life for subtracting material, increasing chromatographic apparatus, is conducive to production unit to hydrogen isotope separation monitoring and other advantages.

Description

A kind of hydrogen isotope analysis special-purpose gas chromatograph
Technical field
The utility model relates to a kind of chromatograph, specifically a kind of hydrogen isotope analysis special-purpose gas chromatograph.
Background technique
Deuterium is another stable isotope of hydrogen, also referred to as heavy hydrogen.Important raw material of the deuterium as nuclear fusion, not only may be used With military, and can be civilian.Controlled nuclear fusion (artificial sun) is exactly with deuterium for important basic material, deuterium triton fusion The huge energy that reaction generates collects, and benefits for the mankind.It is known that nuclear fusion generally refer to deuterium tritium fusion synthesis it is heavier Atomic nucleus helium and release the process of huge energy.In nature, the sun is exactly " fusion reactor " an of super giant, And controlled nuclear fusion carries out under manual control.Therefore it is commonly called as " artificial sun ".According to expert calculation, 1 liter of seawater In can extract 0.03 gram of deuterium, the energy discharged in fusion reaction be equivalent to burning 300 liters of gasoline generate thermal energy.Or It says, the energy that 1 gram of deuterium participates in nuclear fusion release is equivalent to 10,000 liters of gasoline.Because deuterium is extracted from seawater, this New energy has the characteristics that inexhaustible, nexhaustible, cheap, cleaning.In the case where traditional energy is increasingly depleted, it is had become The main new energy depended on for existence and development for human future.
Deuterium also can be widely used in the industries such as scientific research, medical treatment, electronics, agricultural, industry, extraordinary lamps and lanterns.Point of hydrogen isotope It has very important significance from for fusion reactor fuel recycle etc., hydrogen isotope separation detection at present uses gas-chromatography list Valve, single-column do carrier gas using He in the analysis process, and the molecular weight for helium occur is close with hydrogen isotope, and thermal conductivity coefficient is poor Not less, therefore it is unfavorable for the detection of microcomponent.Simultaneously because gas compression generates negative when chromatographic column immerses low temperature liquid nitrogen tank Pressure, flash disruption instrument sensor-based system cause gas-chromatography instrument to break down.
Utility model content
In view of the foregoing defects the prior art has, this application provides a kind of dedicated gas-chromatographies of hydrogen isotope analysis Instrument has and reduces labour cost, the energy saving service life for subtracting material, increasing chromatographic apparatus, is conducive to production unit to the same position of hydrogen The advantages that plain separating monitoring.
To achieve the above object, the technical solution of the application are as follows: a kind of hydrogen isotope analysis special-purpose gas chromatograph, packet It includes: six-way valve A, six-way valve B, counterbalance valve, low temperature liquid nitrogen tank, chromatographic column, TCD detector, chromatographic work station, quantitative loop;It is described Quantitative loop is equipped between c interface in six-way valve A and f interface;The h interface in b interface and six-way valve B in the six-way valve A It is connected, the i interface in the six-way valve B is connected to chromatographic work station by TCD detector, n interface and chromatography in six-way valve B One end of column is connected, and the other end of the chromatographic column is connected with the j interface in six-way valve B, and the chromatographic column is placed in low temperature liquid nitrogen tank In, the counterbalance valve is connected to the m interface in six-way valve B.
Further, the b interface in the six-way valve A is connected by stainless steel tube with the h interface in six-way valve B.
Further, the TCD detector connects chromatographic work station by signal wire.
Further, the TCD detector is micro- thermal conductivity detector (TCD).
Further, the chromatographic column is Ф 3mm*1m stainless stee l packed column.
Further, the low temperature liquid nitrogen tank is Dewar bottle, and has stainless steel sealing structure with cover.
Further, the signal wire is to receive signal wire.
Further, the stainless steel tube is Ф 2mm stainless steel.
Due to using the technology described above, can obtain following technical effect: the application uses bivalve 1 to the utility model The concatenated gas chromatograph of column, reduces labour cost, and energy conservation subtracts material, increases the service life of chromatographic apparatus, is conducive to produce Monitoring of the unit to hydrogen isotope separation.
Six-way valve A in the application plays sample introduction valve action, and six-way valve B, which connects the counterbalance valve, to be play a part of to balance pressure, When preventing from entering low temperature liquid nitrogen tank due to chromatographic column, gas compression generates negative pressure, flash disruption instrument sensor-based system.
Detailed description of the invention
Fig. 1 is the sampling state pneumatic diagram of the utility model.
Fig. 2 is the sample introduction state pneumatic diagram of the utility model
Number explanation in figure: 1, six-way valve A, 2, six-way valve B, 3, counterbalance valve, 4, low temperature liquid nitrogen tank, 5, chromatographic column, 6, TCD Detector, 7, chromatographic work station, 8, quantitative loop 9, stainless steel tube;
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments: special to this as example Benefit is further described explanation.
The hydrogen isotope analysis special-purpose gas chromatograph of the utility model, the quantitative analysis by the way of 1 column of bivalve, six is logical Valve A1 brings sample gas into six-way valve B2, by six-way valve B2 carrier gas by sample bring into hydrogen isotope analysis chromatographic column specially 5 into Row separates, with 6 response signal of TCD detector, and 7 collecting signal of chromatographic work station is converted into spectrogram, area normalization standard measure.Its The course of work is divided into sampling, sample introduction two parts.
One, sample: this process is to make chromatographic column after entering low temperature liquid nitrogen tank full of carrier gas.Sampling state pneumatic diagram is as schemed Shown in 1, under sampling state, six-way valve A1 adjacent a-b, c-d, f-e interface communicates respectively, and a-f, e-d, c-b interface are disconnected Open stuffiness.Sample gas is blown into six-way valve A1 by e interface, enters quantitative loop 8 through f interface by direction shown in arrow in Fig. 1, is full of Extra gas is discharged through c-d interface after quantitative loop, guarantees that the inner sample air volume of each sample introduction quantitative loop 8 is consistent, is equivalent to every time Sample volume is identical.Carrier gas is blown into six-way valve A1 by a interface, enters six-way valve B2 through b interface by direction shown in arrow in Fig. 1 In.Six-way valve B2 is adjacent, and h-i, n-m, k-j interface communicate respectively, and the disconnection of n-h, i-j, k-m interface cannot ventilate, by Fig. 1 Direction shown in arrow enters the h interface of six-way valve B2 through the b interface of six-way valve A, and carrier gas enters TCD detector 6 after i interface In, at this time without sample gas by detector, no chromatographic peak is generated.In addition carrier gas passes through 3 regime flow of counterbalance valve by six-way valve all the way The m interface of B2 enters, and carrier gas enters one end of chromatographic column 5 by n interface, by chromatographic column 5 other end in direction shown in arrow in Fig. 1 It is connected with the j interface of six-way valve B2, chromatographic column 5 immerses the low temperature liquid nitrogen tank 4 that liquid nitrogen is housed after being full of carrier gas, and anti-gas compression produces Raw negative pressure, flash disruption instrument sensor-based system are vented by k interface.
Two, sample introduction: sample introduction state pneumatic diagram is as shown in Fig. 2, this process is by changing six-way valve A1 and six-way valve B2 shape State, six-way valve A1 adjacent a-f, b-c, d-e interface communicate respectively, and a-b, c-d, f-e interface disconnect stuffiness, and carrier gas enters The sample gas of quantitative loop 8 is pressed into direction shown in arrow in Fig. 1 through f interface after a interface and enters six-way valve B2's by b interface after c H interface, adjacent n-h, i-j, k-m interface of six-way valve B2 communicates respectively at this time, and the disconnection of h-i, n-m, k-j interface cannot ventilate, Chromatographic column 5 is brought by n interface by sample gas in direction shown in arrow in Fig. 1, is kept completely separate in chromatographic column 5, is flowed out from chromatographic column 5 Carrier gas with sample gas, into signal is formed in TCD detector 6, last signal collection is passed in chromatographic work station 7 and forms chromatography Signal peak.
The utility model does carrier gas using Ne, 1 column of bivalve, when preventing from immersing low temperature liquid nitrogen tank due to chromatographic column, gas pressure Contracting generates negative pressure, flash disruption instrument sensor-based system;Low-grade fever leads section structure and increases sensitivity.
The above, only the utility model create preferable specific embodiment, but the protection that the utility model is created Range is not limited thereto, and anyone skilled in the art creates the technical scope disclosed in the utility model Interior, technical solution and its utility model design created according to the utility model are subject to equivalent substitution or change, should all cover Within the protection scope that the utility model is created.

Claims (8)

1. a kind of hydrogen isotope analysis special-purpose gas chromatograph characterized by comprising six-way valve A, six-way valve B, counterbalance valve, Low temperature liquid nitrogen tank, chromatographic column, TCD detector, chromatographic work station, quantitative loop;Between c interface and f interface in the six-way valve A Equipped with quantitative loop;B interface in the six-way valve A is connected with the h interface in six-way valve B, and the i interface in the six-way valve B is logical Cross TCD detector and be connected to chromatographic work station, the n interface in six-way valve B is connected with one end of chromatographic column, the chromatographic column it is another End is connected with the j interface in six-way valve B, and the chromatographic column is placed in low temperature liquid nitrogen tank, and the counterbalance valve is connected in six-way valve B M interface.
2. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 1, which is characterized in that the six-way valve A In b interface be connected with the h interface in six-way valve B by stainless steel tube.
3. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 1, which is characterized in that the TCD detection Device connects chromatographic work station by signal wire.
4. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 1, which is characterized in that the TCD detection Device is micro- thermal conductivity detector (TCD).
5. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 1, which is characterized in that the chromatographic column is Ф 3mm*1m stainless stee l packed column.
6. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 1, which is characterized in that the low temperature liquid nitrogen Tank is Dewar bottle, and has stainless steel sealing structure with cover.
7. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 3, which is characterized in that the signal wire is Receive signal wire.
8. a kind of hydrogen isotope analysis special-purpose gas chromatograph according to claim 2, which is characterized in that the stainless steel tube For Ф 2mm stainless steel.
CN201821019508.6U 2018-06-29 2018-06-29 A kind of hydrogen isotope analysis special-purpose gas chromatograph Active CN208313911U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579694A (en) * 2020-05-28 2020-08-25 中国工程物理研究院核物理与化学研究所 System and method for analyzing content of trace impurities in deuterium-tritium mixed gas
CN112834668A (en) * 2020-12-30 2021-05-25 中国原子能科学研究院 Low-temperature control device for analyzing hydrogen isotopes by gas chromatography

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579694A (en) * 2020-05-28 2020-08-25 中国工程物理研究院核物理与化学研究所 System and method for analyzing content of trace impurities in deuterium-tritium mixed gas
CN111579694B (en) * 2020-05-28 2022-09-23 中国工程物理研究院核物理与化学研究所 System and method for analyzing content of trace impurities in deuterium-tritium mixed gas
CN112834668A (en) * 2020-12-30 2021-05-25 中国原子能科学研究院 Low-temperature control device for analyzing hydrogen isotopes by gas chromatography

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