Heating type porous flue gas sampling gun

Abstract

The utility model relates to a heating type porous flue gas sampling gun, which comprises a sampling main machine and a sampling gun body connected with the sampling main machine, the sampling gun body comprises a heating device and a plurality of sampling heads, the heating device is arranged in the sampling gun body to form a sampling channel for flue gas circulation, and the sampling heads are arranged in the sampling gun body. The sampling head is arranged at the front end of the sampling gun body and on the lower side of the sampling gun body; the temperature in the sampling channel can be continuously kept constant through the built-in heating device, so that the condensation phenomenon caused by temperature drop in the sampling process of flue gas is effectively avoided, and meanwhile, the corrosion problem possibly caused by condensation is also prevented; by adopting the design of multiple sampling holes, the sampling gun can perform multi-point synchronous sampling at different flowing positions of flue gas, so that the distribution condition of various components in the flue gas can be captured, the comprehensiveness and representativeness of sampling data are improved, and the sampling result can more accurately reflect the actual condition.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of flue gas sampling, and in particular relates to a heated multi-porous flue gas sampling gun. Background Art

[0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

[0003] In the fields of power, energy, and environmental protection, it is often necessary to sample and analyze fluid media within spaces such as liquid pipelines and gas channels. Because the concentration of media within these spaces is uneven, a grid method is used to perform multi-point sampling and then average the results to improve analysis accuracy.

[0004] Especially in thermal power plants, efficient sampling is required to ensure that the measurement results of smoke concentration are closer to the smoke concentration in the real environment, thereby improving the authenticity of the experiment. However, when thermal power plants face a high temperature, high humidity, and highly corrosive flue gas environment, it is easy for flue gas condensation or corrosion to cause sampling distortion, or even damage the sampling equipment; the heated gas sampling gun disclosed in the existing patent publication number CN202229956U, although with a heating function, only the head of the gun body is provided with a sampling filter, which often requires multiple measurements of the smoke concentration in the area to obtain an average value, and this type of sampling gun is often a single-hole sampling, which makes it difficult to achieve multi-point simultaneous sampling, so the sampling efficiency is slow and the sampling analysis results will also be different. Utility Model Content

[0005] The purpose of the present disclosure is to provide a heated porous flue gas sampling gun that can solve at least one of the above-mentioned technical problems.

[0006] To achieve the above-mentioned objectives, one or more embodiments of the present disclosure provide a heated porous flue gas sampling gun, comprising a sampling host and a sampling gun body connected to the sampling host, wherein the sampling gun body comprises an inner tube wall and an outer tube wall and a plurality of sampling heads for collecting flue gas, wherein a heating device is arranged at intervals between the inner tube wall and the outer tube wall, wherein the sampling head is arranged at the front end and the lower side of the outer tube wall, and a sampling channel for flue gas flow is formed inside the inner tube wall.

[0007] Furthermore, a filtering device is provided in the sampling head, and the filtering device and the sampling head are detachably connected via threads.

[0008] Furthermore, a sampling hole is provided at the location where the outer tube wall of the sampling gun body is connected to the sampling head.

[0009] Furthermore, the sampling head is threadedly connected to the outer tube wall.

[0010] Further, the surface of the outer tube wall is provided with a heat insulation layer to reduce heat loss.

[0011] Further, the heating device is composed of an electric heating element for heating the sampling channel and a regulating device for regulating the temperature of the electric heating element, the regulating device is arranged on one side of the sampling main machine through screw connection, and the electric heating element is uniformly surrounded around the inner tube wall and the outer tube wall and connected with the regulating device through wires.

[0012] Further, the sampling main machine is composed of a flue gas analyzer, a main machine shell and a power connector, and the main machine shell is further provided with a heating interface.

[0013] Further, the inner tube wall is provided with a temperature sensor for collecting flue gas temperature, and the temperature sensor is connected with the flue gas analyzer.

[0014] Further, the filtering device is composed of a filter cartridge assembly and a filter membrane assembly, and the filter membrane assembly is arranged at the center position of the filter cartridge assembly and connected with the filter cartridge assembly through threads.

[0015] Further, the sampling gun body is made of high-strength and corrosion-resistant material.

[0016] The beneficial effects of one or more of the above technical solutions are:

[0017] The built-in heating device can continuously maintain the temperature in the sampling channel constant, effectively avoiding the condensation phenomenon caused by temperature drop of flue gas during sampling, and also preventing the corrosion problem that may be caused by condensation; the design of multiple sampling holes enables the sampling gun to perform multi-point synchronous sampling at different positions of flue gas flow, so as to capture the distribution of various components in the flue gas, not only improving the comprehensiveness and representativeness of the sampling data, but also ensuring that the sampling results can more accurately reflect the actual situation. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application, serve to explain the application, and do not constitute limitations to the application.

[0019] Figure 1 It is an overall structural front view in one or more embodiments of the present disclosure.

[0020] In the drawings, 1 is a sampling head, 2 is a sampling gun body, 3 is an electric heating element, 4 is a heating interface, 5 is a regulating device, 6 is a sampling main machine, 7 is an outer tube wall, 8 is a sampling channel, 9 is a filter cartridge assembly, 10 is a filter membrane assembly, 11 is a temperature sensor, and 12 is an inner tube wall. DETAILED DESCRIPTION

[0021] AsFigure 1 As shown, this embodiment provides a heated porous flue gas sampling gun, which includes a sampling host 6 and a sampling gun body 2 connected to the sampling host 6.

[0022] like Figure 1 As shown, the sampling gun body 2 adopts a steel pipe structure made of high-strength, corrosion-resistant materials, such as stainless steel or high-temperature resistant alloy, which is used to withstand harsh flue gas environments. It includes an inner tube wall 12 and an outer tube wall 7 and multiple sampling heads 1 for collecting flue gas. The sampling heads 1 are arranged at the front end and the lower side of the outer tube wall 7. A certain gap is set between the inner tube wall 12 and the outer tube wall 7. A heating device is provided between the inner tube wall 12 and the outer tube wall 7. A sampling channel 8 for flue gas flow is formed inside the inner tube wall 12; the sampling head 1 and the outer tube wall 7 are connected by threads.

[0023] Through the design of multiple sampling holes, the sampling gun can perform multi-point synchronous sampling at different positions of the flue gas flow, thereby capturing the distribution of various components in the flue gas. This not only improves the comprehensiveness and representativeness of the sampling data, but also ensures that the sampling results can more accurately reflect the actual situation.

[0024] The interior of the sampling head 1 is provided with a detachable filter device for filtering dust in the flue gas. The filter device consists of a filter cartridge assembly 9 and a filter membrane assembly 10. The filter membrane assembly 10 is connected to the filter cartridge assembly 9 by a threaded connection, and the filter membrane assembly 10 is arranged at the center position of the filter cartridge assembly 9 to ensure that the filter membrane assembly 10 can achieve the best filtering effect during the filtration process. The filter device can not only effectively intercept and remove dust in the flue gas, ensuring the accuracy of the sampling process, but also the detachable connection method is convenient for users to clean and replace it in daily use, thereby ensuring the long-term stable operation of the equipment and the reliability of the sampling data.

[0025] The outer tube wall 7 is also provided with an insulation layer to reduce heat loss and improve heating efficiency. This not only effectively isolates external heat loss but also reduces internal heat loss. This design maintains a more stable temperature environment during the heating operation of the sampling gun body 2, significantly improving heating efficiency. This ensures that the sampling gun body 2 can operate with higher energy efficiency during operation. Furthermore, the presence of the insulation layer protects operators from harm caused by high-temperature surfaces, improving safety.

[0026] The sampling host 6 consists of a flue gas analyzer, a host housing and a power connector. The host housing is also provided with a heating interface 4 that provides a power source for the heating device. A temperature sensor 11 for collecting the flue gas temperature in the sampling channel 8 is provided on the inner tube wall 12. The temperature sensor 11 is connected to the flue gas analyzer through a wire.

[0027] The temperature sensor 11 can monitor the temperature condition inside the sampling channel 8 in real time, accurately detect the current temperature value, and transmit the data to the flue gas analyzer of the sampling host 6, so that the flue gas temperature is analyzed, and the problem of flue gas condensation caused by too low temperature is avoided.

[0028] The heating device is composed of an electric heating element 3 and a regulating device 5, the electric heating element 3 is uniformly surrounded between the inner tube wall 12 and the outer tube wall 7, and is connected with the regulating device 5 through a wire for heating the sampling channel 8, so that the uniform distribution of heating heat is ensured, thereby providing a constant and uniform temperature environment for sampling; the regulating device 5 is used for adjusting the temperature of the electric heating element according to the flue gas temperature collected by the temperature sensor 11 in the sampling channel 8, so as to avoid the condensation of flue gas caused by too low temperature in the sampling channel 8, and the existing temperature regulating valve can be selected as the regulating device 5.

[0029] The built-in heating device 3 can continuously maintain the constant temperature in the sampling channel 8, effectively avoids the condensation phenomenon of flue gas caused by temperature drop in the sampling process, and also prevents the corrosion problem caused by condensation.

[0030] In the embodiment, the flue gas analyzer of the sampling host 6 adopts an existing product. The realization of the function is obvious to those skilled in the art with relevant technical background, and no additional technical innovation or improvement is needed. Therefore, the focus of the embodiment is not to deeply improve or optimize the software algorithm of these products, but to realize the specific technical target through the cooperative work of these mature components.

[0031] The working principle of the utility model is as follows:

[0032] The sampling host 6 is powered through the power connector of the sampling host 6, the electric heating element 3 of the heating device is controlled to heat up, the sampling head 1 of the sampling gun is inserted into the flue gas area to be detected for measurement and sampling, and then the flue gas is analyzed by the flue gas analyzer of the sampling host 6, and compared with the industry standard data.

[0033] Although the specific embodiments of the present disclosure are described above with reference to the drawings, it is not a limitation on the protection scope of the present disclosure, and those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present disclosure without creative labor are still within the protection scope of the present disclosure.

Claims

1. A heated porous flue gas sampling lance, characterized in that, The utility model provides a sampling host computer and a sampling gun body connected with the sampling host computer, the sampling gun body comprises an inner tube wall and an outer tube wall and a plurality of sampling heads for collecting flue gas, the inner tube wall and the outer tube wall are spaced apart and are provided with a heating device, the sampling heads are arranged at the front end of the outer tube wall and the lower side of the outside, and a sampling channel for flue gas flow is formed in the inner tube wall.

2. A heated porous flue gas sampling probe according to claim 1, wherein, A filter device is arranged in the sampling head, and the filter device and the sampling head are detachably connected through threads.

3. A heated porous flue gas sampling probe according to claim 1, wherein, A sampling hole is arranged at the position where the outer tube wall of the sampling gun body is connected with the sampling head.

4. A heated porous flue gas sampling probe according to claim 1, wherein, The sampling head and the outer tube wall are connected through threads.

5. A heated porous flue gas sampling probe according to claim 1, wherein, A heat insulation layer for reducing heat loss is arranged on the surface of the outer tube wall.

6. A heated porous flue gas sampling probe according to claim 1, wherein, The heating device comprises an electric heating element for heating the sampling channel and an adjusting device for adjusting the temperature of the electric heating element, the adjusting device is arranged on one side of the sampling host computer through screw connection, and the electric heating element is uniformly surrounded around the inner tube wall and the outer tube wall and is connected with the adjusting device through wires.

7. A heated porous flue gas sampling probe according to claim 1, wherein, The sampling host computer comprises a flue gas analyzer, a host computer shell and a power connector, and the host computer shell is further provided with a heating interface for providing a power source for the heating device.

8. A heated porous flue gas sampling probe according to claim 1, wherein, A temperature sensor for collecting the temperature of flue gas is arranged on the inner tube wall, and the temperature sensor is connected with the flue gas analyzer.

9. A heated porous flue gas sampling probe according to claim 2, wherein, The filter device comprises a filter cartridge assembly and a filter membrane assembly, the filter membrane assembly is arranged at the central position of the filter cartridge assembly and is connected with the filter cartridge assembly through threads.

10. A heated porous flue gas sampling probe according to claim 1, wherein, The sampling gun body is made of high-strength and corrosion-resistant materials.

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