CN219511900U

CN219511900U - Bypass type high-temperature flue gas sampling and measuring device

Info

Publication number: CN219511900U
Application number: CN202221924903.5U
Authority: CN
Inventors: 陶红喜
Original assignee: Wuhan Yuxing Automation Technology Co ltd
Current assignee: Wuhan Yuxing Automation Technology Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2023-08-11
Anticipated expiration: 2032-07-25

Abstract

The utility model discloses a bypass type high-temperature flue gas sampling and measuring device which comprises a shell, wherein the shell is connected with a sample gas probe rod through a mounting seat flange, an exhaust port is formed in the shell, a filtering mechanism is arranged in the shell, one end of the filtering mechanism is communicated with the sample gas probe rod, the side wall of the other end of the filtering mechanism is sequentially communicated with a bypass measuring pool, a jet pump and an exhaust port, and a gas analysis instrument is arranged at the end part and/or in the bypass measuring pool. The utility model introduces the sample gas from the flue or pipeline into the device in the form of a bypass, and then returns the sample gas to the flue or pipeline immediately. No sampling pipeline is needed, cooling, dehydration and drying are not needed, and the measured gas is analyzed as it is. The structure can be used for solving the measurement problems of cement plant rotary kiln high-temperature flue gas detection, flue gas ammonia escape measurement after a denitration device, and measurement of the oxygen content and carbon monoxide at the top of a high-temperature kiln in a glassplant and other special environments. And can be matched with various analytical instruments for use, and has wide applicability.

Description

Bypass type high-temperature flue gas sampling and measuring device

Technical Field

The utility model relates to the field of gas analyzers, in particular to a bypass type high-temperature flue gas sampling and measuring device.

Background

In the field of gas analyzers, in situ analysis generally refers to an instrument that directly contacts an analysis probe, sensor components, and process gases for measurement analysis. The common in-situ gas detecting instrument is a thermocouple for detecting the temperature of the gas, which is directly inserted into a pipeline to be directly contacted with the detected gas for measurement. The direct-insert zirconia analyzer is also directly inserted into a pipeline and is provided with a measured gas contact measurement. The laser correlation gas analyzer is a mode of directly installing a transmitting laser and a laser receiver on the symmetrical surface of a pipeline, and the transmitted spectrum penetrates the detected gas to be detected. This type of device is referred to as an in situ gas detection device. The advantage of in situ measurement is the fast response speed, and the system does not need a complex sampling processing system.

In some environmental conditions, in-situ measurement cannot be realized, and a bypass method is needed to solve the problem that in-situ measurement cannot be realized. The bypass type analysis measuring device has slower response speed than the in-situ analyzer device, but can overcome the problem that the in-situ analyzer cannot take service, such as a great amount of dust in the measured gas, and the in-situ analyzer device cannot be directly used in special environments such as high temperature of 700-1200 ℃ and the like, and the bypass type analysis measuring device can be adopted to solve the problem better, and the response speed of the bypass type analysis measuring device is faster than that of the traditional sampling type analyzer device. The traditional sampling analyzer device needs to extract the measured gas, and a plurality of links such as pipeline output, drying and dehydration, dust removal and the like increase the complexity and cost of the system, and delay the measurement response time.

Disclosure of Invention

The utility model provides a bypass type high-temperature flue gas sampling and measuring device, which solves the problem that measurement cannot be realized in situ under certain environmental conditions, and simultaneously solves the problems of complex structure, high cost and long measurement response time of the traditional sampling analyzer device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a bypass type high temperature flue gas sampling measuring device, includes the casing, and the casing passes through the mount pad flange to be connected with the sample gas probe, is equipped with the gas vent on the casing, and the inside filtering mechanism that is equipped with of casing, filtering mechanism's one end intercommunication sample gas probe, other end lateral wall communicate bypass measuring cell, jet pump, gas vent in proper order, and bypass measuring cell tip and/or inside are equipped with gas analysis instrument.

As the preferable of above-mentioned scheme, filtering mechanism includes the filter cavity, and the lower extreme and the sample gas probe rod intercommunication of filter cavity, the upper end have set firmly the filter lid, inside is equipped with dust filter.

As the preference of above-mentioned scheme, bypass measuring cell both sides tip is equipped with sample gas inlet and sample gas outlet respectively, and the sample gas inlet passes through the sample trachea and is connected with filter cavity upper portion lateral wall, and the sample gas outlet passes through the sample trachea and is connected with the jet pump.

Preferably, the two ends of the bypass measuring cell are respectively provided with an optical probe and an optical detector.

Preferably, a semiconductor ceramic sensor or a thermal conductivity sensor is arranged in the bypass measuring cell.

Due to the structure, the utility model has the beneficial effects that:

1. the measuring device of the utility model introduces the sample gas into the device in the form of a bypass from the flue or the pipeline, and then returns to the flue or the pipeline immediately. No sampling pipeline is needed, cooling, dehydration and drying are not needed, and the measured gas is analyzed as it is. The structure can be used for solving the measurement problems of cement plant rotary kiln high-temperature flue gas detection, flue gas ammonia escape measurement after a denitration device, and measurement of the oxygen content and carbon monoxide at the top of a high-temperature kiln in a glassplant and other special environments.

2. The bypass type high-temperature flue gas sampling and measuring device can be used with a laser spectrum analyzer and an ultraviolet spectrum analyzer, and can also be used with a combination mode of a laser and semiconductor ceramic sensor, an ultraviolet and semiconductor ceramic sensor and a laser and thermal conductivity sensor to work, so that the device can play a maximum role, and a new solution idea is provided for gas monitoring in an industrial complex environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.

Fig. 1 is a schematic structural view of the present utility model.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, this embodiment provides a bypass type high temperature flue gas sampling measurement device, including casing 1, casing 1 is connected with sample gas probe 3 through mount pad flange 2, is equipped with the gas vent on the casing 1, and casing 1 is inside to be equipped with filtering mechanism, and filtering mechanism's one end intercommunication sample gas probe 3, the other end lateral wall communicates bypass measuring cell 9, jet pump 11, gas vent in proper order, and bypass measuring cell 9 tip and/or inside are equipped with gas analysis instrument.

In this embodiment, the filtering mechanism includes a filter cavity 5, the lower end of the filter cavity 5 is communicated with the sample gas probe rod 3, the upper end is fixedly provided with a filter cover 6, and the inside is provided with a dust filter 4.

In this embodiment, the two side ends of the bypass measuring cell 9 are respectively provided with a sample gas inlet 8 and a sample gas outlet 10, the sample gas inlet 8 is connected with the upper side wall of the filter cavity 5 through a sample gas pipe 7, and the sample gas outlet 10 is connected with a jet pump 11 through the sample gas pipe 7.

In this embodiment, the two ends of the bypass measuring cell 9 are respectively provided with an optical probe 12 and an optical detector 13.

In this embodiment, a semiconductor ceramic sensor or a thermal conductivity sensor 14 is disposed in the bypass measuring cell 9.

The working principle of the structure is as follows:

during measurement, the sample gas probe rod 3 is contacted with smoke, the measured gas is led into the measuring device from the flue or the pipeline in a bypass mode, after the smoke enters the filtering mechanism, the smoke enters the bypass measuring pool 9 from the upper side wall through the sample gas pipe 7 by the sample gas inlet 8, then immediately returns to the flue or the pipeline from the exhaust port through the sample gas outlet 10 by the jet pump 11, the temperature of the high-temperature gas can be reduced in the bypass, and the filter can be added in the bypass by the high-dust gas. No sampling pipeline is needed, cooling, dehydration and drying are not needed, and the measured gas is analyzed as it is. The structure can be used for solving the measurement problems of cement plant rotary kiln high-temperature flue gas detection, flue gas ammonia escape measurement after a denitration device, and measurement of glass plant high-temperature kiln top oxygen content and carbon monoxide in special environments.

The bypass type high-temperature flue gas sampling and measuring device can be used with a laser spectrum analyzer and an ultraviolet spectrum analyzer, and can also be used with a combination mode of a laser and semiconductor ceramic sensor, an ultraviolet and semiconductor ceramic sensor and a laser and thermal conductivity sensor to work, so that the device can play a maximum role, and a new solution idea is provided for gas monitoring in an industrial complex environment.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A bypass type high temperature flue gas sampling and measuring device is characterized in that: the device comprises a shell, wherein the shell is connected with a sample gas probe rod through a mounting seat flange, an exhaust port is formed in the shell, a filtering mechanism is arranged in the shell, one end of the filtering mechanism is communicated with the sample gas probe rod, the side wall of the other end of the filtering mechanism is sequentially communicated with a bypass measuring pool, a jet pump and the exhaust port, and a gas analysis instrument is arranged at the end part and/or the inside of the bypass measuring pool.

2. The bypass type high temperature flue gas sampling and measuring device according to claim 1, wherein: the filter mechanism comprises a filter cavity, the lower end of the filter cavity is communicated with the sample gas probe rod, a filter cover is fixedly arranged at the upper end of the filter cavity, and a dust filter is arranged in the filter cavity.

3. A bypass type high temperature flue gas sampling and measuring device according to claim 2, wherein: the bypass measuring cell both sides tip is equipped with sample gas inlet and sample gas outlet respectively, and the sample gas inlet passes through the sample trachea and is connected with filter cavity upper portion lateral wall, and the sample gas outlet passes through the sample trachea and is connected with the jet pump.

4. The bypass type high temperature flue gas sampling and measuring device according to claim 1, wherein: and the two ends of the bypass measuring pool are respectively provided with an optical probe and an optical detector.

5. The bypass type high temperature flue gas sampling and measuring device according to claim 1, wherein: and a semiconductor ceramic sensor or a thermal conductivity sensor is arranged in the bypass measuring pool.