CN218956200U

CN218956200U - Novel gas analyzer extension type double back flushing sampling probe

Info

Publication number: CN218956200U
Application number: CN202320084819.5U
Authority: CN
Inventors: 吉华平
Original assignee: Tangshan Zhengneng Technology Co ltd
Current assignee: Tangshan Zhengneng Technology Co ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-02
Anticipated expiration: 2033-01-29

Abstract

The utility model relates to the technical field of sampling probes of gas analyzers, in particular to a novel prolonged double back blowing sampling probe of a gas analyzer. Including the flange, one side of flange is provided with the sleeve, be provided with first passageway and the second passageway that runs through its both sides and both are located the sleeve on the flange, telescopic one end is connected with the outer tube, the other end of outer tube is connected with the holding ring, and the one end and the holding ring of sheath pipe are connected, and the filter core is located the sheath pipe, the inside cavity that is of filter core and one end are the opening, and this opening is connected with the inscription pipe, the inscription pipe passes holding ring, outer tube and sleeve in proper order and is connected to the second passageway, telescopic one end is kept away from for outer blowback interface to first passageway, telescopic one end is kept away from for the sampling interface to the second passageway. The utility model does not need to arrange an electric heater outside the filter element.

Description

Novel gas analyzer extension type double back flushing sampling probe

Technical Field

The utility model relates to the technical field of sampling probes of gas analyzers, in particular to a novel prolonged double back blowing sampling probe of a gas analyzer.

Background

In order to monitor whether the flue gas discharged by a factory meets the standard, a flue gas sampling probe needs to be installed on a flue gas pipeline, and the flue gas collected by the probe is conveyed to a gas analyzer for analysis through the pipeline with heat tracing. The patent application number 200810065314.4 discloses a flue gas sampling probe, and it includes the flange, and one side of flange is provided with the sampling pipe that is used for stretching into the flue inside, and the opposite side of flange is provided with the filter, in order to prevent that the temperature reduction water content in filter department from condensing into liquid water, is provided with electric heater in the filter outside, but because the circular telegram has increased the risk in the use in the intangible way, for example probably causes the electric shock, perhaps the electric leakage makes equipment trip.

Disclosure of Invention

The utility model aims to solve the technical problems, and provides a novel gas analyzer extension type double back flushing sampling probe without an electric heater.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a novel two blowback sampling probes of gas analysis appearance extension formula, includes the flange, one side of flange is provided with the sleeve, be provided with first passageway and the second passageway that runs through its both sides and both are located the sleeve on the flange, telescopic one end is connected with the outer tube, the other end of outer tube is connected with the holding ring, and the one end of sheath pipe is connected with the holding ring, and the filter core is located the sheath pipe, the inside cavity that is of filter core and one end are the opening, and this opening is connected with the inscription pipe, inscription pipe passes holding ring, outer tube and sleeve in proper order and is connected to the second passageway, telescopic one end is kept away from for outer blowback interface to first passageway, telescopic one end is kept away from for the sampling interface to the second passageway.

Further optimizing this technical scheme, one side of sheath pipe is provided with a plurality of through-holes.

Further optimizing this technical scheme, the clearance between first passageway, sleeve and the inscription pipe, the clearance between outer tube and the inscription pipe, the clearance between support ring and the inscription pipe, the clearance between sheath pipe and the filter core have formed outer blowback passageway.

According to the technical scheme, the second passage, the inner hole of the inner connecting pipe and the inner cavity of the filter element form a sampling and inner blowback passage.

Further optimizing this technical scheme, the material of filter core is porous ceramic or porous metal.

Compared with the prior art, the utility model has the following advantages: 1. the flange is provided with the second passage, the second passage is connected to the filter element through the inner connecting pipe, and the outside of the filter element is provided with the protective sleeve pipe, so that the filter element can be protected from being impacted and worn by particles in the flue gas, the filter element can be stretched into the flue gas pipeline, and an electric heater is not required to be arranged outside the filter element; 2. the inner back-flushing channel and the outer back-flushing channel are arranged, so that the filter element and the sheath tube can be effectively cleaned; 3. the lengths of the outer sleeve and the inner connecting pipe can be set according to actual conditions, and the length of the inner connecting pipe can be set longer, so that the back-flushing gas can be heated to a higher temperature by high-temperature flue gas.

Drawings

Fig. 1 is a schematic structural diagram of the sampling probe.

In the figure: 1. a flange; 11. a first passage; 12. a second passage; 2. an external back-flushing interface; 3. a sampling interface; 4. a sleeve; 5. an outer sleeve; 6. an inner connecting pipe; 7. a support ring; 8. a sheath tube; 81. a through hole; 9. a filter element.

Detailed Description

The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

The specific embodiment is as follows: the utility model provides a combine the two blowback sampling probes of novel gas analysis appearance extension formula, includes flange 1, one side of flange 1 is provided with sleeve 4, be provided with on the flange 1 and run through the first passageway 11 and the second passageway 12 of its both sides and both are located sleeve 4, the one end of sleeve 4 is connected with outer tube 5, the other end of outer tube 5 is connected with support ring 7, and the one end and the support ring 7 of sheath pipe 8 are connected, and the other end of sheath pipe 8 is the opening. The filter element 9 is positioned in the protective sleeve 8, the inside of the filter element 9 is a cavity, one end of the filter element 9 is an opening, the opening is connected with the inner connecting pipe 6, and the inner connecting pipe 6 sequentially passes through the supporting ring 7, the outer sleeve 5 and the sleeve 4 to be connected to the second passage 12. The length of the outer sleeve 5 and the inner sleeve 6 can be determined according to actual needs, and the length belongs to an extension tube. The end of the first passage 11 far away from the sleeve 4 is an external blowback interface 2, and the end of the second passage 12 far away from the sleeve 4 is a sampling interface 3. In addition to the filter element 9, other parts are preferably made of 316 stainless steel, have high temperature resistance, and can be connected together in a welding mode according to the connecting structure in order to ensure tightness; the components can also be connected together in a conical thread connection mode according to the connection structure, namely, two connected components are connected, one of the connected parts is provided with an inner conical thread, and the other connected part is provided with an outer conical thread.

Further, a plurality of through holes 81 are provided at one side of the sheath tube 8 to increase air permeability. When the filter is used, since particles are contained in the flue gas of the flue, in order to prevent the particles from impacting the filter element 9 at a high speed (because the filter element 9 is worn after long-time use), the protective sleeve 8 is arranged outside the filter element 9, and the through hole 81 is arranged on one side opposite to the flow direction of the flue gas, so as to prevent the particles in the flue gas from directly impacting the filter element 9 through the through hole 81.

The first passage 11, the gap between the sleeve 4 and the inner connecting tube 6, the gap between the outer sleeve 5 and the inner connecting tube 6, the gap between the supporting ring 7 and the inner connecting tube 6 and the gap between the sheath tube 8 and the filter element 9 form an external back flushing channel. The second passage 12, the inner hole of the inner connecting tube 6 and the inner cavity of the filter element 9 form a sampling channel and are also inner blowback channels.

Specifically, the filter element 9 is made of porous ceramic or porous metal, and has the property of high temperature resistance.

Working principle: when the gas sampling device is used, the mounting seat is arranged outside the side wall of the gas pipeline, one end of the mounting seat is in a tube shape, the gas pipeline is communicated with the mounting seat, the flange 1 on the sampling probe is connected with the flange on the mounting seat, the filter element 9 stretches into the gas pipeline by 80-150 cm (the outer sleeve 5 and the inner sleeve 6 can determine the length according to actual needs and belong to an extension tube, high-temperature flue gas can heat blowback gas to a higher temperature under the length), the outer blowback interface 2 is connected with an outer blowback pipeline, a first electromagnetic valve is arranged on the pipeline, the sampling interface 3 is connected with the pipeline connected to the gas analyzer, a bypass is arranged at the position, close to the sampling interface 3, of the pipeline connected to the gas analyzer, and the bypass is connected to a compressed gas source and is provided with a second electromagnetic valve. During sampling, the first electromagnetic valve and the second electromagnetic valve are closed, and the sampling pump (equipment except the probe does not belong to the device) pumps the smoke from the smoke pipeline after filtering the smoke through the filter element 9 and sends the smoke to the gas analyzer. When the filter element 9 is used for a period of time, the filter element 9 needs to be cleaned, at the moment, the second electromagnetic valve is firstly opened to perform internal backflushing on the filter element 9, then the first electromagnetic valve is opened to perform external backflushing, and dust on the inner wall of the protective sleeve pipe 8 and the outer wall of the filter element 9 can be blown out by the external backflushing. Because the filter element 9 of the sampling probe stretches into the flue gas pipeline, the temperature of the filter element is higher, and the problem that water vapor condenses into liquid water does not exist, so an electric heater is not needed.

Claims

1. Novel gas analysis appearance extension type double blowback sampling probe, including flange (1), its characterized in that: one side of flange (1) is provided with sleeve (4), be provided with first passageway (11) and second passageway (12) and both that run through its both sides on flange (1) and be located sleeve (4), the one end of sleeve (4) is connected with outer tube (5), the other end of outer tube (5) is connected with support ring (7), and the one end and the support ring (7) of sheath pipe (8) are connected, and filter core (9) are located sheath pipe (8), filter core (9) are inside to be cavity and one end be the opening, and this opening is connected with interior union coupling (6), interior union coupling (6) pass support ring (7), outer tube (5) and sleeve (4) in proper order and are connected to second passageway (12), the one end that sleeve (4) was kept away from to first passageway (11) is outer blowback interface (2), the one end that sleeve (4) was kept away from to second passageway (12) is sampling interface (3).

2. The novel gas analyzer extension type double back flushing sampling probe of claim 1, wherein: one side of the sheath tube (8) is provided with a plurality of through holes (81).

3. The novel gas analyzer extension type double back flushing sampling probe of claim 1, wherein: the outer blowback channel is formed by the first passage (11), the gap between the sleeve (4) and the inner connecting pipe (6), the gap between the outer sleeve (5) and the inner connecting pipe (6), the gap between the supporting ring (7) and the inner connecting pipe (6) and the gap between the sheath pipe (8) and the filter element (9).

4. The novel gas analyzer extension type double back flushing sampling probe of claim 1, wherein: the second passage (12), the inner hole of the inner connecting pipe (6) and the inner cavity of the filter element (9) form a sampling and inner blowback channel.

5. The novel gas analyzer extension type double back flushing sampling probe of claim 1, wherein: the filter element (9) is made of porous ceramic or porous metal.