CN216646374U

CN216646374U - Online chromatograph sample gas filter equipment

Info

Publication number: CN216646374U
Application number: CN202123070026.8U
Authority: CN
Inventors: 杨文�; 杨中元; 史德庆; 李峰; 狄厚伟
Original assignee: Shandong Huifen Instrument Co ltd
Current assignee: Shandong Huifen Instrument Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-31
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a sample gas filtering device of an online chromatograph, which comprises a base lower part, a base upper part and a distributor, wherein the distributor is arranged on the lower inner side of the base, a sintering filter element is arranged at the upper end of the lower inner side of the base, and the base is arranged at the lower upper end of the base. The utility model can effectively filter out the micro dust, improve the purity of carrier gas inlet air and avoid the blockage of a quantitative ring, a pipeline and a valve, thereby improving the sensitivity of a chromatograph, prolonging the service life of the chromatograph and improving the working efficiency.

Description

Online chromatograph sample gas filter equipment

Technical Field

The utility model relates to a gas filtering device, in particular to a sample gas filtering device of an online chromatograph.

Background

When an on-line gas chromatograph performs sample analysis, for a standard gas, the components in the standard gas are clean, water, oil, dust and the like are not contained generally, the chromatograph operates stably, and the phenomenon of pipeline blockage is not caused, however, the sampling and sampling mode of the on-line chromatograph generally comprises the steps of taking gas from a chimney which is 15-20 meters away from the chromatograph or even farther away by a sampling probe, and then conveying the gas to a sample inlet of the chromatograph through a heat tracing pipeline, because the temperature and the humidity of mixed gas in the chimney are both higher, and the inner diameter of a pipeline in the chromatograph is only about 0.6-0.7mm, after the gas is injected into the chromatograph, the blockage of a quantitative ring, the pipeline and a valve of the chromatograph is easily caused, once the pipeline and the valve are blocked, the cleaning is troublesome, the on-site processing is not easy, and even if a manufacturer generally adopts a replacement mode for maintenance.

In view of the above phenomenon, the current solutions generally include:

1. the general manufacturers do not process, after the on-line instruments are installed and debugged, if the situation of blockage of quantitative rings, pipelines and valves occurs in the operation process, the users detach the instruments and send the instruments to the manufacturers for solution, so that the period is long, and the cost is high!

2. The method can solve the problem of blockage in a short time, but the blockage of a quantitative ring, a pipeline and a valve can be caused after a long time!

In short, the sample injection method causes frequent maintenance of the instrument, and also causes the situations of poor repeatability of the analysis result, large quantitative deviation, and the like!

Disclosure of Invention

The utility model aims to provide a sample gas filtering device of an online chromatograph, which can effectively filter out dust particles, improve the purity of carrier gas inlet gas and avoid the blockage of a quantitative ring, a pipeline and a valve, thereby improving the sensitivity of the chromatograph, prolonging the service life of the chromatograph and improving the working efficiency.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an online chromatograph appearance gas filter equipment, includes under the base, on the base, the distributor, the inboard is equipped with the distributor under the base, and inboard upper end department is equipped with the sintering filter core under the base, and the upper end is installed on the base under the base.

Furthermore, a joint a is welded in a hole on the lower side of the base.

Furthermore, joints b are arranged on the joint a and the interfaces on the base.

Furthermore, the upper end of the lower inner side of the base is provided with a sealing gasket, and the sintering filter element is positioned on the inner side of the sealing gasket.

The utility model has the following beneficial effects: the sintering filter element is adopted for filtering, so that the micro dust coming from the chimney is filtered to the maximum extent, meanwhile, the filter element is specially treated, no adsorption is generated, the purity of carrier gas inlet air is improved, and the blockage of a quantitative ring, a pipeline and a valve is avoided, so that the sensitivity of the chromatograph is improved, the service life of the chromatograph is prolonged, and the working efficiency is improved; a large cavity is arranged in the middle of the lower part 7 of the base and is used as a buffer tank for sample gas, and the sample gas is settled, ascends through the distributor and is filtered by the filter element; the gas enters tangentially, the gas rotates in the cavity, the gas rises, oil water and impurities fall, and therefore gas and liquid are separated; meanwhile, the system is provided with a liquid discharge port, and an exhaust valve can be opened at regular time to discharge the moisture in the filter!

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a structure on a base;

FIG. 3 is a schematic view of the structure under the base;

FIG. 4 is a schematic diagram of the structure of a distributor;

FIG. 5 is a top view of the distributor;

FIG. 6 is a schematic view of a sintered filter element;

FIG. 7 is a schematic view of the gasket construction;

FIG. 8 is a schematic structural view of a joint b;

fig. 9 is a schematic view of the structure of the joint a.

Wherein: 1. joint b, 2, on the base, 3, sintering filter core, 4, sealed pad. 5. Distributor, 6, joint a, 7 under the base.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 9, an on-line chromatograph sample gas filtering device is characterized in that: including 7 under the base, 2, distributor 5 on the base, 7 inboards are equipped with distributor 5 under the base, 7 inboard upper ends department is equipped with sintering filter core 3 under the base, and 2 on the base are installed to 7 upper ends under the base.

A joint a6 is welded in the hole at one side of the lower base 7.

And joints b1 are arranged on the joints a6 and the joints of the base 2.

The upper end of the inner side of the lower base 7 is provided with a sealing gasket 4, and the sintering filter element 3 is positioned on the inner side of the sealing gasket 4.

When in use, the joint a6 is welded in a hole at the lower part of the base lower 7, and leakage is strictly tested after the welding is finished; then the sintered filter element 3 is placed in the sealing gasket 4, then the sealing gasket 4 provided with the sintered filter element 3 is arranged in the lower base 7, finally the upper base 2 is tightly pressed on the lower base 7 by a spanner, and after the assembly is finished, the pressure is maintained by using 0.4mpa nitrogen for 20min, so that the air leakage is qualified; then the assembled filter device is fixed in the chromatograph, the sample gas enters the apparatus through the rear panel of the chromatograph, and then passes through a phi 1/16 stainless steel pipeline to pass through a connector b1 to be tightly connected to a connector a6, and the gas outlet pipeline passes through a phi 1/16 stainless steel pipeline to pass through a connector b1 to be tightly connected to a connector on the base 2.

The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.

Claims

1. The utility model provides an online chromatograph sample gas filter equipment which characterized in that: including under the base, on the base, the distributor, inboard is equipped with the distributor under the base, and inboard upper end department is equipped with the sintering filter core under the base, and the upper end is installed on the base under the base.

2. The on-line chromatograph sample gas filtering device according to claim 1, wherein: and a joint a is welded in the hole at the lower side of the base.

3. The on-line chromatograph sample gas filtering device according to claim 2, wherein: and the joints b are arranged on the joint a and the interfaces on the base.

4. The on-line chromatograph sample gas filtering device according to claim 1, wherein: the upper end of the lower inner side of the base is provided with a sealing gasket, and the sintering filter element is positioned on the inner side of the sealing gasket.