CN210665420U

CN210665420U - Ultra-clean CEMS probe

Info

Publication number: CN210665420U
Application number: CN201921317416.0U
Authority: CN
Inventors: 王洋; 冯树环
Original assignee: Anhui Anfen Photoelectric Technology Co Ltd
Current assignee: Anhui Anfen Photoelectric Technology Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-06-02
Anticipated expiration: 2029-08-14

Abstract

The utility model discloses an ultra-clean CEMS probe belongs to a flue gas probe, including sampling tube, front end housing, outer tube, filter core, rear end housing, outlet duct and heating device, the both ends opening part of outer tube is fixed with front end housing and rear end housing respectively, is fixed with the ring flange through set screw on the front end housing, and the sampling tube is connected on the front end housing through fixed cover, be fixed with the filter core fixing base on the rear end housing, install the filter core on the filter core fixing base, the filter core is in the outer tube, be equipped with the venthole in the filter core fixing base, the venthole passes through the connecting pipe and is connected with the outlet duct, the filter core fixing base is equipped with supersonic generator on the installation face that corresponds the filter core, the beneficial effects of: after the sample is accomplished, through supersonic generator and blowback pipe's synergism, clear up the adnexed dust of filter core surface etc. can guarantee the cleanness on this device inside and filter core surface, can not cause the influence to the sample next time.

Description

Ultra-clean CEMS probe

Technical Field

The utility model relates to a flue gas probe specifically is an ultra-clean CEMS probe.

Background

The CEMS is a device for continuously monitoring the concentration and the total emission amount of gaseous pollutants and particulate matters emitted from an atmospheric pollution source and transmitting information to a competent department in real time, and is called an automatic flue gas monitoring system, also called a continuous flue gas emission monitoring system or an online flue gas monitoring system. The CEMS is respectively composed of a gaseous pollutant monitoring subsystem, a particulate matter monitoring subsystem, a flue gas parameter monitoring subsystem and the like.

Under the action of the air pump, the CEMS sampling probe makes the sample gas to be measured enter the cavity of the device through the sampling pipe inserted into the pipe wall of the sample, and the sample gas flows to the sample gas outlet through the dust filter. The temperature of the sample gas is always in a higher state in the sampling process, so that the water in the sample gas is not condensed, and the working condition of the filter is obviously improved.

The existing CEMS sampling probe generally purifies the filter element by compressed gas back blowing in order to prevent the filter element from being blocked, but the back blowing purification effect is not ideal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an ultra-clean CEMS probe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an ultra-clean CEMS probe, includes sampling tube, front end housing, outer tube, filter core, rear end cap and outlet duct, the both ends opening part of outer tube is fixed with front end housing and rear end cap respectively, is fixed with the ring flange through set screw on the front end housing, and the sampling tube is connected on the front end housing through fixed cover, be fixed with the filter core fixing base on the rear end cap, install the filter core on the filter core fixing base, the filter core is in the outer tube, be equipped with the venthole in the filter core fixing base, the venthole passes through the connecting pipe and is connected with the outlet duct, the filter core fixing base is equipped with supersonic generator on the installation face that corresponds the filter core, still be connected with the blow.

As a further aspect of the present invention: and a plurality of sealing rings are arranged between the filter element fixing seat and the rear end cover.

As a further aspect of the present invention: and the back flushing pipe and the air outlet pipe are both provided with one-way valves.

As a further aspect of the present invention: and a heating device is further installed in the outer sleeve and is a heating wire, and the heating wire is spirally fixed on the inner wall of the outer sleeve.

As a further aspect of the present invention: the filter is characterized in that an inner conical sleeve is further arranged in the outer sleeve, two ends of the inner conical sleeve are respectively fixed on the front end cover and the rear end cover, the filter element is located in the inner conical sleeve, a cavity is formed between the outer sleeve and the inner conical sleeve, and the heating wire is installed in the cavity.

As a further aspect of the present invention: the inner diameter of the inner taper sleeve is gradually increased along the flowing direction of the flue gas.

As a further aspect of the present invention: the fixed sleeve is provided with a conical hole at the position corresponding to the end part of the inner conical sleeve, the inner diameter of the conical hole is gradually increased along the flowing direction of the flue gas, and two ends of the conical hole are respectively opposite to the sampling tube and the inner conical sleeve.

As a further aspect of the present invention: the filter element fixing seat is fixedly provided with a generator fixing sleeve opposite to the air outlet hole in position through threaded connection or welding, the ultrasonic generator is installed on the generator fixing sleeve, the inner hole of the generator fixing sleeve has taper, and the diameter of the inner hole of the generator fixing sleeve is gradually reduced along the flowing direction of the flue gas.

Compared with the prior art, the beneficial effects of the utility model are that: after the sample is accomplished, through supersonic generator and blowback pipe's synergism, clear up the adnexed dust of filter core surface etc. can guarantee the cleanness on this device inside and filter core surface, can not cause the influence to the sample next time.

Drawings

FIG. 1 is a schematic diagram of an ultra-clean CEMS probe.

FIG. 2 is a schematic diagram of the flue gas flow of an ultra-clean CEMS probe during sampling.

FIG. 3 is a schematic view of the air flow of an ultra-clean CEMS probe during blow-back.

In the figure: 1-sampling tube, 2-fixing sleeve, 3-flange, 4-front end cover, 5-fixing screw, 6-heating wire, 7-outer sleeve, 8-inner cone sleeve, 9-filter element, 10-cavity, 11-rear end cover, 12-filter element fixing seat, 13-back flushing tube, 14-air outlet tube, 15-connecting tube, 16-air outlet hole, 17-cone hole, 18-generator fixing sleeve, 19-ultrasonic generator and 20-sealing ring.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Example 1

Referring to fig. 1-3, in the embodiment of the present invention, an ultra-clean CEMS probe comprises a sampling tube 1, a front end cap 4, an outer sleeve 7, a filter element 9, a rear end cap 11 and an air outlet tube 14, wherein the front end cap 4 and the rear end cap 11 are respectively fixed at openings at two ends of the outer sleeve 7, a flange 3 is fixed on the front end cap 4 through a fixing screw 5, so as to fix the apparatus on an external mechanism, the sampling tube 1 is connected to the front end cap 4 through a fixing sleeve 2, so as to feed flue gas into the outer sleeve 7, a filter element fixing seat 12 is fixed on the rear end cap 11, of course, in order to enhance the sealing effect, a plurality of sealing rings 20 are installed between the filter element fixing seat 12 and the rear end cap 11, the filter element 9 is installed on the filter element fixing seat 12, the filter element 9 is located in the outer sleeve 7, an air outlet hole 16 is arranged in, the filtered flue gas can flow out from the gas outlet pipe 14, and the structure of the probe device is the same as that of the probe device in the prior art, and the description thereof is omitted here. The improvement point of the embodiment is that: filter core fixing base 12 is equipped with supersonic generator 19 on the installation face that corresponds filter core 9, and after the single sample was accomplished, start supersonic generator 19, supersonic generator 19 sent ultrasonic wave from filter core 9 to filter core 9 outdiffusion arouses the vibration of the dust on filter core 9 surface for dust attached to filter core 9 surface can drop, reduces the influence to flue gas filtration efficiency and effect when taking a sample next time. And, in order to timely discharge the dust in the outer tube 7 in time, still be connected with the blowback pipe 13 on the connecting pipe 15, here, the connecting pipe 15 can preferably use the tee bend to realize being connected with the blowback pipe 13 and the outlet duct 14 simultaneously, the blowback pipe 13 is connected with outside high pressurized air source (like compressed air), of course, all install the check valve on blowback pipe 13 and the outlet duct 14, the check valve of blowback pipe 13 can prevent that sample gas from entering into blowback pipe 13, the check valve on the outlet duct 14 can prevent that high pressurized air source from entering into the outlet duct 14, in order to guarantee sample and blowback process each other not influence.

In practical application, the flue gas enters the outer sleeve 7, dust in the flue gas is intercepted after being filtered by the filter element 9, and then a flue gas sample enters the air outlet pipe 14 through the air outlet hole 16 to finish sampling; after the sampling is finished, a high-pressure air source and the ultrasonic generator 19 can be selected to perform back flushing or back flushing, and the method specifically comprises the following steps: a high-pressure air source (such as compressed air) enters the filter element 9 through the blowback pipe 13, the connecting pipe 15 and the air outlet 16, and simultaneously cooperates with the ultrasonic generator 19, the ultrasonic generator 19 can cause the vibration of dust on the surface of the filter element 9, so that the dust attached to the surface of the filter element 9 can fall off, and the compressed air can drive the vibrated dust to flow, and here, the high-pressure air source can be selected to be sprayed out from the sampling pipe 1 or be provided with a hole on the outer sleeve 7 for the gas to flow out.

Example 2

Referring to fig. 1, in an embodiment of the present invention, an ultra-clean CEMS probe is based on the above embodiment: in order to prevent the moisture condensation in the flue gas and further influence the subsequent detection result, this embodiment is still installed heating device in outer tube 7, specifically, heating device is heater strip 6, and heater strip 6 is the heliciform and fixes on the inner wall of outer tube 7.

Preferably, an inner taper sleeve 8 is further arranged in the outer sleeve 7, two ends of the inner taper sleeve 8 are respectively fixed on the front end cover 4 and the rear end cover 11, at this time, the filter element 9 is located in the inner taper sleeve 8, smoke can enter the inner taper sleeve 8 to be filtered, a cavity 10 is formed between the outer sleeve 7 and the inner taper sleeve 8, and the heating wire 6 is installed in the cavity 10. Here, the inner taper sleeve 8 needs to have a good heat conduction effect, and the outer sleeve 7 needs to be made of a heat insulating material.

Meanwhile, in the embodiment, the inner diameter of the inner taper sleeve 8 is gradually increased along the flow direction of the flue gas, so that the flow speed of the flue gas can be reduced when the flue gas enters the inner taper sleeve 8, and the filtering effect is convenient to improve; or, in the flowing direction along the backflushing gas, the inner diameter of the inner taper sleeve 8 is gradually reduced, and relatively, the inner taper sleeve can play a certain guiding role on the backflushing gas, so that the backflushing gas can flow out conveniently. More specifically, the fixed sleeve 2 is provided with a tapered hole 17 at a position corresponding to the end of the inner taper sleeve 8, the inner diameter of the tapered hole 17 is gradually increased along the flow direction of the flue gas in the tapered hole 17, and two ends of the tapered hole 17 are respectively opposite to the sampling tube 1 and the inner taper sleeve 8.

Example 3

Referring to fig. 1 to 3, in an embodiment of the present invention, an ultra-clean CEMS probe is based on the above embodiments: in order to facilitate the installation of the ultrasonic generator 19 and the outflow of the back flushing gas, a generator fixing sleeve 18 opposite to the air outlet 16 is fixed on the filter element fixing seat 12 through threaded connection or welding, the ultrasonic generator 19 is installed on the generator fixing sleeve 18, the inner hole of the generator fixing sleeve 18 has a taper, the diameter of the inner hole of the generator fixing sleeve 18 is gradually reduced along the flowing direction of the flue gas, so that the flow guiding of the flue gas filtered by the filter element 9 can be facilitated during sampling, the back flushing gas can be diffused during back flushing, and the contact area between the filter element 9 and the back flushing gas can be conveniently increased.

It should be particularly noted that, in the technical scheme, after sampling is completed, dust and the like attached to the surface of the filter element 9 are cleaned through the synergistic effect of the ultrasonic generator 19 and the blowback pipe 13, so that the cleanness of the inside of the device and the surface of the filter element 9 can be ensured, and the next sampling cannot be influenced.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An ultra-clean CEMS probe comprises a sampling tube (1), a front end cover (4), an outer sleeve (7), a filter element (9), a rear end cover (11) and an air outlet pipe (14), wherein openings at two ends of the outer sleeve (7) are respectively fixed with the front end cover (4) and the rear end cover (11), a flange plate (3) is fixed on the front end cover (4) through a fixing screw (5), the sampling tube (1) is connected on the front end cover (4) through a fixing sleeve (2), a filter element fixing seat (12) is fixed on the rear end cover (11), the filter element (9) is installed on the filter element fixing seat (12), the filter element (9) is positioned in the outer sleeve (7), an air outlet hole (16) is arranged in the filter element fixing seat (12), the air outlet hole (16) is connected with the air outlet pipe (14) through a connecting pipe (15), the ultra-clean CEMS probe is characterized in that the ultrasonic generator (19) is arranged, the connecting pipe (15) is also connected with a back flushing pipe (13), and the back flushing pipe (13) is connected with an external high-pressure air source.

2. An ultra-clean CEMS probe according to claim 1, wherein a plurality of sealing rings (20) are installed between the cartridge holder (12) and the rear end cap (11).

3. An ultra-clean CEMS probe as claimed in claim 1 wherein check valves are mounted on both the blowback tube (13) and the outlet tube (14).

4. An ultra-clean CEMS probe as claimed in claim 1, 2 or 3 wherein the outer sheath (7) further incorporates heating means in the form of a heating wire (6), the heating wire (6) being helically fixed to the inner wall of the outer sheath (7).

5. An ultra-clean CEMS probe as claimed in claim 4 wherein the outer sleeve (7) is further provided with an inner cone sleeve (8), the two ends of the inner cone sleeve (8) are respectively fixed on the front end cap (4) and the rear end cap (11), the filter element (9) is located in the inner cone sleeve (8), a cavity (10) is formed between the outer sleeve (7) and the inner cone sleeve (8), and the heating wire (6) is installed in the cavity (10).

6. An ultra clean CEMS probe as claimed in claim 5 wherein the inner diameter of the inner taper sleeve (8) increases progressively along the direction of flow of the flue gas.

7. An ultra-clean CEMS probe as claimed in claim 6, wherein said fixed sleeve (2) is provided with a tapered hole (17) at a position corresponding to the end of the inner taper sleeve (8), the inner diameter of the tapered hole (17) is gradually increased along the flowing direction of the flue gas, and the two ends of the tapered hole (17) are respectively opposite to the sampling tube (1) and the inner taper sleeve (8).

8. An ultra-clean CEMS probe as claimed in claim 1 or 5 or 6 or 7 wherein said cartridge holder (12) is fixed by screwing or welding with a generator holder (18) opposite to the outlet hole (16), the ultrasonic generator (19) is mounted on the generator holder (18), and the inner bore of the generator holder (18) has a taper, the inner bore of the generator holder (18) has a decreasing diameter in the direction along the flow of the flue gas.