CN203587398U

CN203587398U - Belt pressure sampling device based on near infrared spectrum analysis

Info

Publication number: CN203587398U
Application number: CN201320786013.7U
Authority: CN
Inventors: 薛岗; 宋文琦
Original assignee: Tianjin Fire Fighting Institute Ministry of Public Security
Current assignee: Tianjin Fire Fighting Institute Ministry of Public Security
Priority date: 2013-12-04
Filing date: 2013-12-04
Publication date: 2014-05-07
Anticipated expiration: 2023-12-04

Abstract

The utility model relates to a belt pressure sampling device based on near infrared spectrum analysis. The belt pressure sampling device comprises a storing steel cylinder, high-pressure rubber pipes, a pressure reducing valve, a valve and a pressure-proof sampling storage, wherein the two ends of the pressure reducing valve are connected with the high pressure rubber pipes; a high end high pressure rubber pipe is connected with a sample storing steel cylinder, a rear end high pressure rubber pipe is connected with the valve, and the other end of the valve and the pressure-proof sampling storage are spirally connected together; the pressure-proof sampling storage is composed of an air inlet pipe, a connecting pipe and a storing pipe, and the joints of pipes are provided with gaskets. The belt pressure sampling device provided by the utility model has the advantages that the method is simple, the sampling is rapid, the structure is convenient to disassemble and maintain, the measurement analysis of a gas sample in a near infrared spectrum is realized for the first time, and the belt pressure sampling device is also popularized in fields such as Raman spectrums and infrared spectrums.

Description

A kind of sampler with pressure based on near-infrared spectrum analysis

Technical field

The utility model relates to a kind of sampling analysis device with pressure, particularly a kind of sampler with pressure based on near-infrared spectrum analysis.

Background technology

Near infrared spectrum be between visible ray and in infrared between, wavelength coverage 700nm-2500nm(4000 cm ^-1-14285cm ^-1) one section of absorption spectrum, near-infrared spectrum technique is quick because of it, harmless, pollution-free, without destructive, operative technique requires low, can realize the characteristic of online or field quick detection, be widely used in agricultural, food, in the analytic process of the product such as petrochemical industry and medicine, and general adopt (instead) thoroughly penetrated, diffuse reflection, unrestrained (instead) thoroughly the mode such as penetrates, can directly to sample, carry out near-infrared spectral measurement, do not need to carry out pre-service, near infrared spectrum can be applicable to analysed for powder, particle, tablet, limpid liquid, the sample of the different conditions such as turbid solution, but for gaseous sample, be difficult to carry out qualitative or quantitative judgement by the method for near-infrared spectrum analysis, mainly because in sampling process, if what gather is gaseous sample, be difficult to guarantee the consistance of repeated sampling concentration, the accuracy of the spectral analysis of the laggard row of every sub-sampling is just difficult to guarantee, therefore, a kind of device must be provided.

Summary of the invention

The utility model is for the problem of above-mentioned existence, a kind of sampler with pressure that carries out near-infrared spectral measurement analysis that can be used in is provided, gaseous sample is pressurized liquefied, at the near infrared spectrum with gathering liquid gas or fluid sample under pressure condition, and then carry out the express-analysis of the qualitative or quantitative sample composition of near infrared spectrum, concrete technical scheme is, a kind of sampler with pressure based on near-infrared spectrum analysis, comprise storage steel bottle, high-pressure rubber pipe, reduction valve, valve and withstand voltage sample storer, it is characterized in that: reduction valve two ends connect high-pressure rubber pipe, front end high sebific duct connects sample storage steel cylinder, rear end high-pressure rubber pipe connects valve, the valve other end and withstand voltage sample storer are screwed together, described withstand voltage sample storer is by draft tube, connecting pipe and storage tube composition, wherein draft tube is the right cylinder of a various outer diameter, the interior through hole being comprised of different pore size and the hole of two-port are screw, compare little one end, aperture is put into packing ring successively, convex plug and spring, convex plug is withstood on packing ring endoporus, this end external diameter has screw thread, storage tube is an obstructed pipe, on sidewall, there is a through hole, mouth of pipe external diameter has screw thread, in pipe, place packing ring and quartz glass tube, connecting pipe internal diameter two ends are with internal thread, by draft tube, storage tube is screwed into one, between each pipe, there is packing ring junction.

The beneficial effects of the utility model are to have realized first the near-infrared spectral measurement analysis of gaseous sample, and method is simple, sampling is rapid, be convenient to maintenance, and application is extensive, also can be used for the gas sample in the fields such as Raman spectrum, infrared spectrum.

Accompanying drawing explanation

Fig. 1 is structure connection diagram of the present utility model.

Fig. 2 is withstand voltage sample storer cut-open view of the present utility model.

Embodiment

For the example that is sampled as of heptafluoro-propane extinguishing medium.

As Fig. 1, shown in 2, draft tube 5-1 adopts stainless steel material to be made for the right cylinder of a various outer diameter, the interior through hole being comprised of different pore size and the hole of two-port are screw, compare little one end, aperture is put into packing ring 5-4 successively, convex plug 5-5 and spring 5-6, convex plug 5-5 is withstood on packing ring 5-4 endoporus, this end external diameter has screw thread, storage tube 5-3 is an obstructed stainless steel pipe, on sidewall, there is a through hole 5-8, mouth of pipe external diameter has screw thread, in pipe, place packing ring 5-4 and quartz glass tube 5-7, 2mm in quartz glass tube 5-7 wall thickness, radius 2mm, voltage endurance capability 2Mpa, the connecting pipe 5-2 internal diameter two ends that employing stainless steel material is made are with internal thread, by draft tube 5-1, storage tube 5-3 is screwed into one, between each pipe, there is packing ring 5-4 junction, form withstand voltage sample storer 5, 2Mpa reduction valve 3 two ends are connected to high-pressure rubber pipe 2, front end high sebific duct 2 connects sample storage steel cylinder 1, rear end high-pressure rubber pipe 2 connects ball valve 4, ball valve 4 other ends and withstand voltage sample storer 5 are screwed together.

The sampling method with pressure of near-infrared spectrum analysis is that employing is pressurized liquefied by gaseous sample, under band pressure condition, adopts this device to gather liquid gas sample.

This device sampling principle is to have convex plug 5-5 and spring 5-6 between the draft tube 5-1 of withstand voltage sample storer 5 and connecting pipe 5-2, when band press liquid enters into from draft tube 5-1 in withstand voltage sample storer 5, because the elastic force of spring 5-6 is less than the pressure with press liquid, therefore fluid sample with pressure can back down in the quartz glass tube 5-7 that convex plug 5-5 enters into storage tube 5-3, now the gas in storage tube 5-3 can overflow from the junction of quartz glass tube 5-7 and packing ring, when quartz glass tube 5-7 is full of after band press liquid, connecting pipe 5-2 and storage tube 5-3 are spirally connected closely, now the elastic force of the pressure with press liquid in quartz glass tube 5-7 and spring 5-6 is greater than the pressure with press liquid entering from draft tube 5-1, make convex plug 5-5 can seal air intake opening, therefore, can make to be with press liquid to be stayed in quartz glass tube 5-7.Method is simple, be convenient to safeguard, as long as after high-pressure rubber pipe, reduction valve, valve are connected with gaseous sample storage cylinder fitted with withstand voltage sample storer, in 10 seconds, just can complete sampling, take off the withstand voltage sample storer that liquid sample is housed and just can carry out near-infrared spectrum analysis, realized first the near-infrared spectral measurement analysis of gaseous sample, the method and device can also be used for the analysis of gaseous sample in fields such as Raman spectrum, infrared spectrums.

Claims

1. the sampler with pressure based on near-infrared spectrum analysis, comprise storage steel bottle (1), high-pressure rubber pipe (2), reduction valve (3), valve (4) and withstand voltage sample storer (5), it is characterized in that: reduction valve (3) two ends connect high-pressure rubber pipe (2), front end high sebific duct (2) connects sample storage steel cylinder (1), rear end high-pressure rubber pipe (2) connects valve (4), valve (4) other end and withstand voltage sample storer (5) are screwed together, described withstand voltage sample storer (5) is by draft tube (5-1), connecting pipe (5-2) and storage tube (5-3) composition, wherein draft tube (5-1) is the right cylinder of a various outer diameter, the interior through hole being comprised of different pore size and the hole of two-port are screw, compare little one end, aperture is put into packing ring (5-4) successively, convex plug (5-5) and spring (5-6), convex plug (5-5) is withstood on packing ring (5-4) endoporus, this end external diameter has screw thread, storage tube (5-3) is an obstructed pipe, on sidewall, there is a through hole (5-8), mouth of pipe external diameter has screw thread, in pipe, place packing ring (5-4) and quartz glass tube (5-7), connecting pipe (5-2) internal diameter two ends are with internal thread, by draft tube (5-1), storage tube (5-3) is screwed into one, between each pipe, there is packing ring (5-4) junction.