CN203606331U - Sample feeding system for measuring sulfur hexafluoride gas decomposition products - Google Patents

Abstract

The utility model provides a sample feeding system for measuring sulfur hexafluoride gas decomposition products. The sample feeding system for measuring the sulfur hexafluoride gas decomposition products comprises a ten-way sample feeding valve which has a sampling state and a sample feeding state, and is characterized in that a sample gas emptying valve, a first carrier gas check valve, a second carrier gas check valve, a first quantification pipe, a second quantification pipe, a first chromatographic column and a second chromatographic column are additionally arranged, wherein a first pipeline of the ten-way sample feeding valve is connected with a sample gas to be tested; a second pipeline is connected with the sample gas emptying valve; the second quantification pipe is arranged between a third pipeline and a fourth pipeline; the fourth pipeline is connected with the second chromatographic column; a fifth pipeline is connected with a carrier gas through the second carrier gas check valve; the first quantification pipe is arranged between a seventh pipeline and a tenth pipeline; an eighth pipeline is connected with the first chromatographic column; a ninth pipeline is connected with the carrier gas through the first carrier gas check valve. According to the sample feeding system for measuring the sulfur hexafluoride gas decomposition products, the sampling and the sample feeding of two gas paths in chromatographic analysis are completed at the same time by switching the two positions of sampling and sample feeding of the ten-way sample feeding valve, and the work performance is high.

Description

The sampling system of measuring for sulfur hexafluoride gas decomposition product

Technical field

The utility model provides a kind of sampling system of measuring for sulfur hexafluoride gas decomposition product, belongs to electric power analysis field of measuring technique.

Background technology

In recent years, along with the development of electric power science and technology, SF in sulfur hexafluoride electrical equipment ₆decomposition product detection technique is improved, except adopting electrochemical sensor method measure portion SF ₆decomposition product method unexpected, gas chromatographic analysis technique is more and more applied.In gas chromatographic analysis, often use special manual or electronic six-way injection valve to complete collection and the sample introduction of sample, if the gas composition type of analyzing increases, need to adopt more chromatographic column to participate in the shunting of gas circuit, single six-way injection valve cannot meet the switching of many gas circuits, so just need plural six-way injection valve to complete this function, make process of gas path complicated.

Utility model content

The utility model provides a kind of sampling system of measuring for sulfur hexafluoride gas decomposition product that overcomes above defect, excellent working performance.Its technology contents is:

A kind of sampling system of measuring for sulfur hexafluoride gas decomposition product, comprise the ten logical sampling valves with " sampling " and " sample introduction " two states, it is characterized in that: set up sample gas exhaust-valve, the first carrier gas stop valve, the second carrier gas stop valve, the first quantity tube, the second quantity tube, the first chromatographic column and the second chromatographic column, the first pipeline of ten logical sampling valves connects treats test sample gas, the second pipeline connects sample gas exhaust-valve, between the 3rd pipeline and the 4th pipeline, be provided with the second quantity tube, the 4th pipeline connects the second chromatographic column, the 5th pipeline connects carrier gas through the second carrier gas stop valve, between the 7th pipeline and the tenth pipeline, be provided with the first quantity tube, the 8th pipeline connects the first chromatographic column, the 9th pipeline connects carrier gas through the first carrier gas stop valve, in the time that ten lead to sampling valves in sampling location, the first pipeline and the tenth pipeline connection, the second pipeline and the 3rd pipeline connection, the 4th pipeline and the 5th pipeline connection, the 6th pipeline and the 7th pipeline connection, the 8th pipeline and the 9th pipeline connection, in the time that ten lead to sampling valves in sample introduction position, the first pipeline and the second pipeline connection, the 3rd pipeline and the 4th pipeline connection, the 5th pipeline and the 6th pipeline connection, the 7th pipeline and the 8th pipeline connection, the 9th pipeline and the tenth pipeline connection.

Its principle of work is: when the characteristic of utilizing ten logical sampling valves completes in stratographic analysis two-way gas circuit smoothly by the switching of its " sampling " and " sample introduction " two positions, sample and sample introduction, realized two functions that six-way injection valve just can complete of needs:

In the time that ten lead to sampling valves in sampling location, open sample gas exhaust-valve, tested carrier gas is serially connected two quantity tubes by the internal duct of ten logical sampling valves, completes sampling simultaneously; In the time that ten logical sampling valves are switched to sample introduction state, the first carrier gas stop valve forms sample gas sample intake passage with the 9th pipeline, the tenth pipeline, the first quantity tube, the 7th pipeline, the 8th pipeline and the first chromatographic column successively, the second carrier gas stop valve forms sample gas sample intake passage with the 5th pipeline, the 6th pipeline, the second quantity tube, the 3rd pipeline, the 4th pipeline and the second chromatographic column successively, under the driving of two-way carrier gas, sample gas in the first quantity tube, the second quantity tube is brought into respectively in the chromatographic column connecting separately and realizes the separation of different component, thereby can complete SF ₆the stratographic analysis of gas decomposition product.

The utility model compared with prior art, its advantage is: the characteristic of utilizing ten logical sampling valves by the switching of its " sampling " and " sample introduction " two positions complete smoothly two-way gas circuit in stratographic analysis time sample and sample introduction, realize and needed two functions that six-way injection valve just can complete, simple in structure, excellent working performance.

Accompanying drawing explanation

Fig. 1 is the pipeline connection diagram of the logical sampling valve of the utility model embodiment ten while being switched to sampling location;

Fig. 2 is the pipeline connection diagram of the logical sampling valve of the utility model embodiment ten while being switched to sample introduction position.

In figure: 1, ten logical sampling valves 2, sample gas exhaust-valve 3, the first carrier gas stop valve 4, the second carrier gas stop valve 5, the first quantity tube 6, the second quantity tube 7, the first chromatographic column 8, the second chromatographic column 9, the first pipeline 10, the second pipeline 11, the 3rd pipeline 12, the 4th pipeline 13, the 5th pipeline 14, the 6th pipeline 15, the 7th pipeline 16, the 8th pipeline 17, the 9th pipeline 18, the tenth pipeline

Embodiment

Below in conjunction with accompanying drawing, the utility model is described further.In the embodiment shown in Fig. 1-2: ten logical sampling valves 1 have " employing " and " sample introduction " two states, the first pipeline 9 of ten logical sampling valves 1 connects treats test sample gas, the second pipeline 10 connects sample gas exhaust-valve 2, between the 3rd pipeline 11 and the 4th pipeline 12, be provided with the second quantity tube 6, the 4th pipeline 12 connects the second chromatographic column 8, the 5th pipeline 13 connects carrier gas through the second carrier gas stop valve 4, between the 7th pipeline 15 and the tenth pipeline 18, be provided with the first quantity tube 5, the 8th pipeline 16 connects the first chromatographic column 7, the nine pipelines 17 and connects carrier gas through the first carrier gas stop valve 3, in the time that ten lead to sampling valves 1 in sampling location, the first pipeline 9 is communicated with the tenth pipeline 18, the second pipeline 10 is communicated with the 3rd pipeline 11, the 4th pipeline 12 is communicated with the 5th pipeline 13, the 6th pipeline 14 is communicated with the 7th pipeline 15, the 8th pipeline 16 is communicated with the 9th pipeline 17, and tested carrier gas is serially connected the first quantity tube 5 and the second quantity tube 6 by the internal duct of ten logical sampling valves 1, completes sampling simultaneously, in the time that ten lead to sampling valves 1 in sample introduction position, the first pipeline 9 is communicated with the second pipeline 10, the 3rd pipeline 11 is communicated with the 4th pipeline 12, the 5th pipeline 13 is communicated with the 6th pipeline 14, the 7th pipeline 15 is communicated with the 8th pipeline 16, the 9th pipeline 17 is communicated with the tenth pipeline 18, such the first carrier gas stop valve 3 successively with the 9th pipeline 17, the tenth pipeline 18, the first quantity tube 5, the 7th pipeline 15, the 8th pipeline 16 and the first chromatographic column 7 form sample gas sample intake passage, the second carrier gas stop valve 4 successively with the 5th pipeline 13, the 6th pipeline 14, the second quantity tube 6, the 3rd pipeline 11, the 4th pipeline 12 and the second chromatographic column 8 form sample gas sample intake passage, under the driving of two-way carrier gas, the first quantity tube 5, sample gas in the second quantity tube 6 is brought into respectively the separation that realizes different component in the chromatographic column connecting separately, thereby can complete SF ₆the stratographic analysis of gas decomposition product.

Claims (1)

1. a sampling system of measuring for sulfur hexafluoride gas decomposition product, comprise the ten logical sampling valves (1) with " sampling " and " sample introduction " two states, it is characterized in that: set up sample gas exhaust-valve (2), the first carrier gas stop valve (3), the second carrier gas stop valve (4), the first quantity tube (5), the second quantity tube (6), the first chromatographic column (7) and the second chromatographic column (8), first pipeline (9) of ten logical sampling valves (1) connects treats test sample gas, the second pipeline (10) connects sample gas exhaust-valve (2), between the 3rd pipeline (11) and the 4th pipeline (12), be provided with the second quantity tube (6), the 4th pipeline (12) connects the second chromatographic column (8), the 5th pipeline (13) connects carrier gas through the second carrier gas stop valve (4), between the 7th pipeline (15) and the tenth pipeline (18), be provided with the first quantity tube (5), the 8th pipeline (16) connects the first chromatographic column (7), the 9th pipeline (17) connects carrier gas through the first carrier gas stop valve (3), in the time that ten lead to sampling valves (1) in sampling location, the first pipeline (9) is communicated with the tenth pipeline (18), the second pipeline (10) is communicated with the 3rd pipeline (11), the 4th pipeline (12) is communicated with the 5th pipeline (13), the 6th pipeline (14) is communicated with the 7th pipeline (15), and the 8th pipeline (16) is communicated with the 9th pipeline (17), in the time that ten lead to sampling valves (1) in sample introduction position, the first pipeline (9) is communicated with the second pipeline (10), the 3rd pipeline (11) is communicated with the 4th pipeline (12), the 5th pipeline (13) is communicated with the 6th pipeline (14), the 7th pipeline (15) is communicated with the 8th pipeline (16), and the 9th pipeline (17) is communicated with the tenth pipeline (18).

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