CN212031376U - Chromatographic column for realizing full analysis in transformer oil dissolved gas - Google Patents

Abstract

The utility model relates to a realize chromatographic column of full analysis among transformer oil solution gas. It includes the chromatographic column pipe, be equipped with CST post, Porapak T post and Porapak Q post in the chromatographic column pipe in proper order, the CST post is located the opening part of chromatographic column pipe, the bore of chromatographic column pipe is 1/8 inches, and length is 4 meters, the volume of CST post is 0.9 ml, the volume of Porapak T post is 3 ml, the volume of Porapak Q post is 9 ml.

Description

Chromatographic column for realizing full analysis in transformer oil dissolved gas

Technical Field

The utility model relates to a chromatographic column especially discloses a chromatographic column who realizes full analysis in transformer oil solution gas.

Background

With the research on the gas dissolved in the insulating oil inside the oil-filled transformer, the H dissolved in the oil₂、O₂、N₂、CO、CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₈、C₃H₆The content analysis and the change condition of the oil filling equipment can judge the fault generated in the oil filling equipment. In the prior art, a gas chromatograph for power system analysis generally has the following procedures: one is three detector processes, two chromatographic columns used are GDX-502 and TDX-01, and the GDX-502 chromatographic column is used for analyzing CH in the insulating oil in the oil-filled transformer₄、C₂H₆、C₂H₄、C₂H₂TDX-01 chromatographic column analysis of H in insulating oil inside oil-filled transformer₂、CO、CO₂Equal to 7 components; the purpose of analyzing 11 components cannot be achieved, and the sample injection is split sample injection, so that the defects of split discrimination, inconsistency between actually measured substances and sample injection quantity and the like exist; the second method is to configure two chromatographic columns to analyze H in the insulating oil in the oil-filled transformer₂、O₂、N₂、CO、CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₈、C₃H₆The 11 components are equal, the used chromatographic columns are a high molecular polymer column and a 5A molecular sieve column, and the high molecular polymer column is used for analyzing H₂、O₂、N₂、CO、CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₈、C₃H₆Isocomponent, 5A molecular sieve column analysis O₂、N₂The problem with these two chromatographic columns is that: CO and O₂The separation is not realized, so that the analysis result of CO is not accurate, and the other problem is that two times of sample injection is needed, so that unnecessary human error is caused. The third process is to install an automatic switching valve to make samples enter different chromatographic columns at different times, which can increase the cost of the instrument and the failure rate of the instrument, and influence the timely detection of the equipment. In short, in the prior art, the analysis is completed by one sample injection through two or more chromatographic columns, or the analysis is completed by respectively feeding the samples into the two or more chromatographic columns through three-way flow division, or the samples enter the two or more chromatographic columns through valve switching to complete the separation, so that the sample amount entering a detector is reduced, and the detection sensitivity and the detection limit of a gas chromatograph on the samples are reduced. Thus ignoring hidden faults inside the oil-filled transformer.

Disclosure of Invention

An object of the utility model is to overcome the defect that exists among the prior art, provide one kind and avoid reducing gas chromatograph to the detectivity of sample and detect the limit to the chromatographic column of full analysis in the realization transformer oil solution gas of the inside hidden trouble of the most probable discovery oil charge equipment.

The utility model discloses a realize like this: the utility model provides a realize chromatographic column of total analysis in transformer oil solution gas, includes chromatographic column pipe, be equipped with CST post, Porapak T post and Porapak Q post in the chromatographic column pipe in proper order, the CST post is located the opening part of chromatographic column pipe, the bore of chromatographic column pipe is 1/8 inches, and length is 4 meters, the volume of CST post is 0.9 ml, the volume of Porapak T post is 3 ml, the volume of Porapak Q post is 9 ml.

The filler granularity of the CST column, the Porapak T column and the Porapak Q column is 60-80 meshes respectively.

The chromatographic column tube is a stainless steel tube, and the wall thickness of the chromatographic column tube is 0.5 mm.

The utility model disclosesHas the advantages that: the method realizes complete analysis of H in insulating oil in the oil-filled transformer by arranging a CST column, a Porapak T column and a Porapak Q column in a chromatographic column tube with the length of 4 meters₂、O₂、N₂、CO、CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₈、C₃H₆And the 11 gas components are equal, so that the detection sensitivity and the detection limit of the gas chromatograph on the sample are prevented from being reduced, and the hidden fault in the oil-filled equipment can be found to the maximum extent.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Wherein: 1. a chromatography column tube; 2. a CST column; 3. a Porapak T column; 4. porapak Q column.

Detailed Description

According to figure 1, the utility model discloses a chromatographic column pipe 1, chromatographic column pipe 1 is stainless steel pipe. Be equipped with CST post 2, Porapak T post 3 and Porapak Q post 4 in the chromatographic column pipe 1 in proper order, CST post 2 is located the opening part of chromatographic column pipe 1, the bore of chromatographic column pipe 1 is 1/8 inches, and length is 4 meters, the wall thickness of chromatographic column pipe 1 is 0.5 millimeter, the volume of CST post 2 is 0.9 ml, the volume of Porapak T post 3 is 3 ml, the volume of Porapak Q post 4 is 9 ml. The filler particle sizes of the CST column 2, the Porapak T column 3 and the Porapak Q column 4 are respectively 60-80 meshes.

The utility model discloses a set up CST post 2, Porapak T post 3 and Porapak Q post 4 in a length is 4 meters chromatographic column pipe 1 to through the different volumes that set up CST post 2, Porapak T post 3 and Porapak Q post 4, realize the H in the complete analysis oil-filled transformer internal insulation oil₂、O₂、N₂、CO、CO₂、CH₄、C₂H₆、C₂H₄、C₂H₂、C₃H₈、C₃H₆Waiting for 11 gas components to avoid reducing the detection sensitivity and detection limit of the gas chromatograph on the sample, thereby finding the internal places of the oil-filled equipment to the maximum extentA hidden failure.

Claims (3)

1. The utility model provides a realize chromatographic column of full analysis in transformer oil solution gas which characterized in that: including the chromatographic column pipe, be equipped with CST post, Porapak T post and Porapak Q post in the chromatographic column pipe in proper order, the CST post is located the opening part of chromatographic column pipe, the bore of chromatographic column pipe is 1/8 inches, and length is 4 meters, the volume of CST post is 0.9 ml, the volume of Porapak T post is 3 ml, the volume of Porapak Q post is 9 ml.

2. The chromatographic column for realizing the total analysis in the dissolved gas of the transformer oil as claimed in claim 1, which is characterized in that: the filler granularity of the CST column, the Porapak T column and the Porapak Q column is 60-80 meshes respectively.

3. The chromatographic column for realizing the total analysis in the dissolved gas of the transformer oil as claimed in claim 1, which is characterized in that: the chromatographic column tube is a stainless steel tube, and the wall thickness of the chromatographic column tube is 0.5 mm.

Images