CN211904856U

CN211904856U - Special impurity filtering device for petrochemical on-line analysis system

Info

Publication number: CN211904856U
Application number: CN202020540318.XU
Authority: CN
Inventors: 刘科; 黄丽丽
Original assignee: Xi'an Ruiheng Control Equipment Co ltd
Current assignee: Xi'an Ruiheng Control Equipment Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-11-10
Anticipated expiration: 2030-04-13

Abstract

The utility model provides a special impurity filtering device for a petrochemical industry online analysis system, which comprises a filter base and a glass cover, wherein the filter base is of a barrel-shaped structure, and the glass cover covers an opening of the filter base to form a closed cavity; an annular columnar filter element is arranged in the cavity; bosses are respectively formed in the middle of the inner bottom surface of the filter base and the middle of the inner bottom surface of the glass cover along the central axis of the filter element and used for assisting in positioning the filter element; compared with the prior art, the device can conveniently observe the filtering condition of the internal filter element, determine whether to replace the filter element at any time according to filtering, and ensure that the filtering and purifying rate reaches a specified value; the device adopts a barrel-shaped structure, the replacement of the filter element can be implemented without disassembling the air inlet and air outlet pipelines, and the installation and the maintenance are convenient; the sealing cover and the glass cover cap form a closed chamber, so that the sealing performance of the air inlet and outlet pipeline is ensured.

Description

Special impurity filtering device for petrochemical on-line analysis system

Technical Field

The utility model relates to a gaseous preliminary treatment technical field in the coal chemical industry petrochemical production process especially relates to the special impurity filter equipment of petrochemical online analysis system.

Background

Before the process sample gas fluid is sent into the instrument, the sample must be filtered with high efficiency, so as to meet the requirement of the instrument on the sample gas.

The existing impurity removal filtering device can only remove large-particle liquid drops in gas. And fine particle liquid water or condensed water cannot be removed. The filter is large in size and occupies a large space, and moreover, the filter element is generally made of glass fiber or absorbent cotton, so that after the filter element absorbs liquid water to reach a saturated state, the air permeability of the filter element is reduced, and even the filter element is completely blocked. And when the filter element is replaced, air leakage is easy, and the maintenance is not very convenient. The liquid water removal is not good, so that the instrument is easy to damage and the detection is invalid.

The existing impurity removal filtering device still has a considerable amount of liquid particles with small particle sizes even after being filtered, and the liquid particles can damage a detection instrument after entering an analyzer. Causing an adverse effect on the accuracy of the analysis. Leading to the failure of the whole process and a sample system thereof and bringing huge economic loss and potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special impurity filter equipment of petrochemical online analysis system can filter the very little liquid particulate matter of particle diameter to improve the accuracy to the online analysis of appearance gas.

The utility model discloses the technical scheme who adopts as follows:

special impurity filter equipment of petrochemical online analysis system includes: the filter comprises a filter base and a glass cover, wherein the filter base is of a barrel-shaped structure, and the glass cover covers an opening of the filter base to form a closed cavity; an annular columnar filter element is arranged in the cavity; bosses are respectively formed in the middle of the inner bottom surface of the filter base and the middle of the inner bottom surface of the glass cover along the central axis of the filter element and used for assisting in positioning the filter element; the filter base is provided with air inlet and gas outlet, and wherein the air inlet is used for inserting the sample gas of treating the impurity, the gas outlet is used for connecting gas analysis instrument's gas input port.

Furthermore, the air inlet is arranged on the side wall of the outer side of the filter base and communicated with the chamber, and the air outlet is arranged in the middle of the bottom of the filter base and communicated with the chamber.

Furthermore, the device also comprises a fixing plate, wherein a through hole matched with the outer diameter of the filter base is formed in the fixing plate, a radial protruding part is arranged on the outer side of the upper part of the filter base, the filter base is positioned at the through hole, and the protruding part is connected with the fixing plate through a screw.

Further, the fixed plate and the instrument panel of the gas analysis instrument share the same mounting plate.

Further, the inner side wall of the glass cover is in threaded connection with the outer side wall of the upper portion of the filter base.

Furthermore, the inner bottom surface of the glass cover is provided with two circles of grooves, and a first O-shaped sealing ring and a second O-shaped sealing ring are respectively arranged at the two circles of grooves; a circle of groove is formed in the inner bottom surface of the filter base, and a third O-shaped sealing ring is arranged in the groove; the position of the first O-shaped sealing ring corresponds to the annular end face of the opening of the filter base; the radial sizes of the second O-shaped sealing ring and the third O-shaped sealing ring are the same and respectively correspond to the annular upper end surface and the annular lower end surface of the filter element.

Furthermore, the first O-shaped sealing ring, the second O-shaped sealing ring and the third O-shaped sealing ring are all fluorine rubber O-shaped sealing rings.

Further, the filter base is made of aluminum.

Furthermore, the filter element is made of a polytetrafluoroethylene sintered filter element.

Further, the filter element has a size of outer diameter, inner diameter, and height of 30, 15, and 50 mm.

Compared with the prior art, the invention has the following beneficial effects:

1. the utility model adopts the glass cover, which can conveniently observe the filtering condition of the internal filter element, and determine whether to replace the filter element at any time according to the filtering, thereby ensuring that the filtering and purifying rate reaches above the specified value; the filter base of the utility model adopts a barrel-shaped structure, the replacement of the filter element can be implemented without disassembling the air inlet pipeline and the air outlet pipeline, and the installation and the maintenance are convenient; and the glass cover cap is combined with the glass cover cap to form a closed chamber, and the characteristic ensures the tightness of the pipeline at the air inlet and the air outlet.

2. The fixed plate and the instrument panel of the gas analysis instrument share the same mounting plate, so that the purification rate of the filtered sample gas can be conveniently and timely observed.

3. The gas circuit pipeline has good sealing performance and the first, second and third O-shaped sealing rings are arranged, so that the gas circuit pipeline is corrosion-resistant and high-temperature-resistant, sample gas is fully prevented from leaking, and the measurement is accurate.

4. The sealing performance and the installation performance are greatly improved, before the sample gas enters the impurity removing device, liquid water or condensed water is separated from the periphery of the filter element by the hydrophobicity of the filter element, and the purposes of gas-liquid separation and gas purification are achieved. The device has the advantages of strong universality, small volume, light weight and convenient maintenance, thereby ensuring the safe and reliable operation of the sample processing system.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the trash removal device provided by the present invention;

wherein the reference numerals have the meanings given below:

1-a filter base, 2-a glass cover, 3-a filter element, 4-an air inlet, 5-an air outlet, 6-a fixing plate and 7-a fluorine glue O-shaped ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The impurity removal and filtration device in the prior art still has a considerable amount of liquid particles with small particle sizes even after filtration, and the liquid particles can damage a detection instrument after entering an analyzer. Causing an adverse effect on the accuracy of the analysis. Leading to the failure of the whole process and a sample system thereof and bringing huge economic loss and potential safety hazard.

Fig. 1 is the utility model provides an edulcoration device overall structure schematic diagram, as shown in fig. 1, the technical scheme of the utility model as follows: a special impurity filter equipment of petrochemical online analysis system includes: the filter comprises a filter base 1 and a glass cover 2, wherein the filter base 1 is of a barrel-shaped structure, and the glass cover 2 covers an opening of the filter base 1 to form a closed cavity; an annular columnar filter element 3 is arranged in the cavity; bosses are respectively formed in the middle of the inner bottom surface of the filter base 1 and the middle of the inner bottom surface of the glass cover 2 along the central axis of the filter element 3 and used for assisting in positioning the filter element 3; the filter base 1 is provided with a gas inlet 4 and a gas outlet 5, wherein the gas inlet 4 is used for accessing sample gas to be purified, and the gas outlet 5 is used for connecting a gas input port of a gas analysis instrument. The air inlet 4 is arranged on the side wall of the outer side of the filter base 1 and communicated with the chamber, and the air outlet 5 is arranged in the middle of the bottom of the filter base 1 and communicated with the chamber. The device also comprises a fixing plate 6, wherein a through hole matched with the outer diameter of the filter base 1 is formed in the fixing plate 6, a radial protruding part is arranged on the outer side of the upper part of the filter base, the filter base 1 is positioned at the through hole, and the protruding part is connected with the fixing plate 6 through a screw. The fixed plate 6 shares the same mounting plate with the instrument panel of the gas analyzer. The inner side wall of the glass cover 2 is in threaded connection with the outer side wall of the upper part of the filter base 1. The inner bottom surface of the glass cover 2 is provided with two circles of grooves, and a first O-shaped sealing ring and a second O-shaped sealing ring are respectively arranged at the two circles of grooves; a circle of groove is arranged on the inner bottom surface of the filter base 1, and a third O-shaped sealing ring is arranged in the groove; the position of the first O-shaped sealing ring corresponds to the annular end face of the opening of the filter base; the second O-shaped sealing ring and the third O-shaped sealing ring have the same radial size and respectively correspond to the annular upper end surface and the annular lower end surface of the filter element 3. The first O-shaped sealing ring, the second O-shaped sealing ring and the third O-shaped sealing ring are all fluorine rubber O-shaped sealing rings. The filter base 1 is an aluminum base. And the filter element 3 is a polytetrafluoroethylene sintered filter element. The filter element 3 has a size of 30 × 15 × 50mm in outside diameter × inside diameter.

The utility model discloses a sintered hydrophobicity polytetrafluoroethylene micropore filter core, it has following advantage: the composite material is resistant to strong acid and strong alkali, and can bear hydrofluoric acid or other condensed acid. Secondly, the high temperature resistance is 200 ℃, the high temperature resistant sample gas can be used for filtering, and the porosity is high: the porosity of the common metal sintered filter element is below 30, while the porosity of the polytetrafluoroethylene sintered filter element is up to more than 50, so that the same filtering area, large fluid flow and high interception rate are achieved. Fourthly, the outer surface is smooth: the surface of filter core is just as smooth as "wax system", therefore impurity is difficult for hanging on the filter core surface, and surface filter fineness is high simultaneously, and inlayer filter fineness is low, and it is internal that impurity is difficult for imbedding the filter core, and the filter core washs easily and washs thoroughly, and the cleaning performance is excellent, and then long service life. High strength and toughness: high strength and toughness, and difficult fracture of the filter element, which is an incomparable advantage of the metal filter element. Sixthly, the filtering precision is high: the filtering precision of the polytetrafluoroethylene sintered filter element can be 0.3um, even below 0.1um, which can not be achieved by common metal filter elements. High filtration precision and high porosity make the filter core have better fluid flow under the operating mode condition of high filtration precision, this has just possessed the practicality. No threshing phenomenon: the inner surface and the outer surface of the polytetrafluoroethylene sintered filter element are very smooth, and the polytetrafluoroethylene sintered filter element is fully sintered at high temperature and high pressure, so that the phenomenon of 'threshing' in the use process to pollute fluid is avoided. And the utility model discloses organic glass cover and aluminium material filter base have still been adopted, not only conveniently observe inside filter core filtration condition, still make things convenient for the detachability of filter and installation panel. Need not to dismantle business turn over gas port joint pipeline, alright implement the change of filter core, easy to assemble and maintenance, this characteristics have guaranteed the leakproofness of gas circuit pipeline. Wherein the glass cover and the filter base are sealed by a fluorine rubber O-shaped sealing ring. The device is corrosion resistant and high temperature resistant, fully ensures that sample gas does not leak, and is accurate in measurement.

This device is at first carried out all-round transformation to current filter structure, and leakproofness and installation nature obtain great improvement. Before the sample gas enters the detection device, liquid water or condensed water is separated from the periphery of the filter element by the hydrophobicity of the filter element, so that the purposes of gas-liquid separation and gas purification are achieved. The purification rate of the device reaches more than 99 percent, and the device has strong universality, small volume, light weight and convenient maintenance, thereby ensuring the safe and reliable operation of the sample processing system.

During operation, after sample gas gets into this device from the gas circuit pipeline, through air inlet 4, the diffusion is peripheral in filter core 3, through the hydrophobic nature polytetrafluoroethylene micropore filter core of sintering afterwards, and this in-process again, liquid granule separates it because the hydrophobicity of filter core material, is enough to intercept tiny liquid granule, and during 5 transport gas instrument analyzers of gas outlet with dry sample gas, the completion is finally filtered.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. Special impurity filter equipment of petrochemical online analysis system, its characterized in that includes: the filter comprises a filter base and a glass cover, wherein the filter base is of a barrel-shaped structure, and the glass cover covers an opening of the filter base to form a closed cavity; an annular columnar filter element is arranged in the cavity; bosses are respectively formed in the middle of the inner bottom surface of the filter base and the middle of the inner bottom surface of the glass cover along the central axis of the filter element and used for assisting in positioning the filter element; the filter base is provided with air inlet and gas outlet, and wherein the air inlet is used for inserting the sample gas of treating the impurity, the gas outlet is used for connecting gas analysis instrument's gas input port.

2. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the air inlet is arranged on the side wall of the outer side of the filter base and communicated with the chamber, and the air outlet is arranged in the middle of the bottom of the filter base and communicated with the chamber.

3. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the device also comprises a fixing plate, wherein a through hole matched with the outer diameter of the filter base is formed in the fixing plate, a radial protruding part is arranged on the outer side of the upper part of the filter base, the filter base is positioned at the through hole, and the protruding part is connected with the fixing plate through a screw.

4. The special impurity filtering device for the petrochemical online analysis system according to claim 3, wherein: the fixed plate and the instrument panel of the gas analysis instrument share the same mounting plate.

5. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the inner side wall of the glass cover is in threaded connection with the outer side wall of the upper part of the filter base.

6. The special impurity filtering device for the petrochemical online analysis system according to claim 5, wherein: the inner bottom surface of the glass cover is provided with two circles of grooves, and a first O-shaped sealing ring and a second O-shaped sealing ring are respectively arranged at the two circles of grooves; a circle of groove is formed in the inner bottom surface of the filter base, and a third O-shaped sealing ring is arranged in the groove; the position of the first O-shaped sealing ring corresponds to the annular end face of the opening of the filter base; the radial sizes of the second O-shaped sealing ring and the third O-shaped sealing ring are the same and respectively correspond to the annular upper end surface and the annular lower end surface of the filter element.

7. The special impurity filtering device for the petrochemical online analysis system according to claim 6, wherein: the first O-shaped sealing ring, the second O-shaped sealing ring and the third O-shaped sealing ring are all fluorine rubber O-shaped sealing rings.

8. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the filter base adopts an aluminum base.

9. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the filter element is made of polytetrafluoroethylene sintered filter element.

10. The special impurity filtering device for the petrochemical online analysis system according to claim 1, wherein: the filter element is sized with an outer diameter, an inner diameter, a height of 30, 15, 50 mm.