A detachable multi-stage pretreatment handle sampling system

Abstract

This application relates to the field of flue gas analysis technology, and in particular to a detachable multi-stage pretreatment handle sampling system. It includes a housing, probe, distributor, condenser assembly, sampling line, thermocouple, and filter assembly. The housing has a flue gas passage, and the sampling probe communicates with the flue gas passage. The distributor is located within the flue gas passage and includes a first passage, a second passage, and a third passage. The first passage is used to divert flue gas to the condenser assembly. The condenser assembly includes a condenser housing, a refrigeration unit, and a drain valve. The condenser housing has a condensation passage, and the refrigeration unit is installed within the condensation passage, with its cold end attached to the inner wall of the condensation passage and its hot end connected to heat dissipation fins. The drain valve is installed at the bottom of the condensation passage. The measuring end of the thermocouple is installed inside the sampling probe. One end of the secondary filter tube is connected to the sampling line, and the other end is connected to the analyzer. This application has the effect of simultaneously sampling, measuring temperature, and removing water and dust from flue gas.

Description

Technical Field

[0001] This utility model relates to the field of flue gas analysis technology, and in particular to a detachable multi-stage pretreatment handle sampling system. Background Technology

[0002] Flue gas is a complex mixture of gaseous pollutants and particulate matter, and is one of the main sources of atmospheric pollution. Therefore, in order to strengthen environmental protection and ensure that flue gas emissions comply with national emission standards, flue gas emissions are usually tested. The most commonly used tool for flue gas testing is the flue gas analyzer, which is small in size and convenient to carry and use. Currently, commonly used flue gas analyzers are generally equipped with sampling handles for easy flue gas analysis. However, these handles have relatively limited functions; they simply plug into the flue gas analyzer and cannot simultaneously measure temperature, dehumidify, and remove dust from the flue gas. Due to the inability to effectively dehumidify, especially when dealing with flue gas with high humidity, insufficient dehumidification directly affects the accuracy of the measurement data, and consequently the reliability of the final analysis and judgment results. Utility Model Content

[0003] This utility model proposes a detachable, multi-stage pretreatment handle sampling system. This utility model provides the following technical solution:

[0004] A detachable multi-stage pretreatment handle sampling system includes a housing, a probe, a distributor, a condenser assembly, a sampling line, a thermocouple, and a filter assembly. The housing contains a flue gas passage; the probe is connected to the inlet of the flue gas passage, and one end of the sampling line is connected to the outlet of the flue gas passage. The distributor is located within the flue gas passage and has a first passage connected to the inlet of the flue gas passage, a second passage connected to the outlet of the flue gas passage, a third passage connected to the condenser assembly, and a distribution valve that connects the first passage to the second passage or to the third passage. The condenser assembly includes a condenser housing, a refrigeration unit, and a drain valve; the condenser housing contains a condensation channel for condensing the flue gas. The system consists of a cooling unit installed within the condensation passage, with its cold end attached to the inner wall of the passage, and a drain valve installed at the bottom. The thermocouple's measuring end is installed inside the probe, and its circuit is connected in series with a signal interface, which is connected to the analyzer. One end of the filter assembly is connected to the sampling pipeline, and the other end is connected to the analyzer. The thermocouple monitors the flue gas temperature in real time, facilitating further analysis of the monitoring data based on this temperature. The condensation assembly achieves efficient condensation and separation of moisture in the flue gas through the cooling unit, avoiding interference from high humidity in subsequent analysis. The filter assembly combines water-gas separation and polymer filtration, further improving the accuracy of flue gas component analysis.

[0005] Furthermore, a coarse filter is installed at the probe tip to intercept large particles of dust or impurities, reducing the load on the filter components, extending their service life, and improving sampling efficiency.

[0006] Furthermore, the cooling unit is a semiconductor cooling chip, which responds quickly to temperature changes and is suitable for stable operation in high humidity environments.

[0007] Furthermore, the hot end of the thermoelectric cooler is connected to heat dissipation fins, which can effectively enhance heat dissipation efficiency, maintain the operating temperature of the cooler within a safe range, and extend the service life of the cooling unit.

[0008] Furthermore, a temperature sensor is installed on the underside of the semiconductor cooling chip, which can monitor the gas temperature in the condensation path in real time and dynamically adjust the cooling intensity to adapt to changes in flue gas humidity, ensuring the condensation effect.

[0009] Furthermore, a spiral guide plate is provided in the condensation passage, and the surface of the guide plate is coated with a hydrophobic coating, which can prolong the residence time of flue gas, enhance the heat and mass transfer efficiency, and improve the condensation effect.

[0010] Furthermore, the filtration assembly includes a filter tube, a baffle, a water-gas separation filter element, and a polymer filter element. The baffle is located inside the filter tube, dividing the filter tube into a first filter element space and a second filter element space. The first filter element space is equipped with a water-gas separation filter element, and the second filter element space is equipped with a polymer filter element. Through the above technical solution, the water-gas separation filter element can be used for preliminary condensation, water removal, and dust removal, and then the polymer filter element can be used for further water removal and dust removal, achieving multi-stage purification and further extending the service life of the analytical instrument.

[0011] Furthermore, the water-air separation filter element is an activated carbon fiber filter element, and the polymer filter element is a polypropylene filter element.

[0012] Furthermore, the signal interface is a male connector, and the analyzer is equipped with a female connector that matches the male connector.

[0013] Furthermore, the inner wall of the flue gas passage is coated with a high-temperature resistant and corrosion-resistant coating to prevent corrosive substances in the flue gas from reacting with the flue passage, thereby reducing the accuracy of flue gas measurement and affecting the accuracy of measurement data.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. This utility model provides a detachable multi-stage pretreatment handle sampling system, including a housing, probe, thermocouple, sampling pipeline, and filter assembly. The thermocouple is used to measure the temperature in the flue gas. The gas sequentially passes through the probe, the first passage of the distributor in the flue gas passage, the third passage in the distributor connected to the condensation assembly, and then reaches the condensation passage in the condensation assembly for full condensation. After condensation, the gas enters the sampling pipeline through the pipeline for further water and dust removal. This sampling handle is suitable for simultaneous sampling, temperature measurement, water removal, and dust removal of flue gas under high humidity conditions, effectively removing water vapor from the flue gas and ensuring the smooth progress of the flue gas analysis process and the accuracy of the data.

[0016] 2. This utility model provides a detachable multi-stage pretreatment handle sampling system. A spiral guide plate is provided in the condensation passage, and the surface of the guide plate is coated with a hydrophobic coating. The flue gas can spiral forward in the condensation passage, which significantly prolongs the contact path and time between the flue gas and the low-temperature wall, improves the condensation efficiency of water vapor, and thus improves the accuracy of the measurement data. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of a detachable multi-stage preprocessing handle sampling system according to an embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the distributor and condensation component pathway structure in a detachable multi-stage pretreatment handle sampling system according to an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the condensation component of a detachable multi-stage pretreatment handle sampling system according to an embodiment of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Flue gas passage; 2. Probe; 3. Coarse filter; 4. Distributor; 41. First passage; 42. Second passage; 43. Third passage; 44. Distribution valve; 5. Condensation assembly; 51. Condensation housing; 511. Condensation passage; 52. Refrigeration unit; 53. Drain valve; 54. Spiral guide plate; 55. Heat dissipation fins; 6. Sampling line; 7. Thermocouple; 8. Filter assembly; 81. Filter tube; 811. First filter element space; 812. Second filter element space; 82. Partition; 83. Water-gas separation filter element; 84. Polymer filter element. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] According to an embodiment of this utility model, this application discloses a detachable multi-stage pretreatment handle sampling system. (Refer to...) Figure 1 and Figure 2 The sampling handle includes a housing 1, a probe 2, a distributor 4, a condenser assembly 5, a sampling line 6, a thermocouple 7, and a filter assembly 8. The housing 1 is primarily made of lightweight plastic; under specific operating conditions, high-temperature and corrosion-resistant metal materials, such as stainless steel or aluminum alloy, can also be used. The housing 1 has a hollow internal structure and includes a flue gas passage 11, the inner wall of which is coated with a high-temperature resistant and corrosion-resistant coating. The flue gas passage 11 includes a flue gas passage inlet and a flue gas passage outlet. A coarse filter 3 for intercepting large dust particles is installed at the front end of the probe 2 and is connected to the flue gas passage inlet. The distributor 4 is located in the flue gas passage 11 and has a first passage 41 connected to the flue gas passage inlet, a second passage 42 connected to the flue gas passage outlet, a third passage 43 connected to the condenser assembly 5, and a insertion slot for the probe 2. The probe 2 passes through the flue gas passage inlet and is inserted into the insertion slot along the first passage 41 of the distributor 4. The distributor 4 has a distribution valve 44 that connects the first passage 41 to the second passage 42 or connects the first passage 41 to the third passage 43.

[0024] Reference Figure 2 and Figure 3 A condensation assembly 5 is bolted to the end of the housing 1 furthest from the probe 2. The condensation assembly 5 includes a condensation housing 51, a refrigeration unit 52, and a drain valve 53. A condensation passage 511 for condensing flue gas is formed within the condensation housing 51. The condensation passage 511 includes a condensation passage inlet and a condensation passage outlet. The third passage 43 of the distributor 4 is connected to the condensation passage inlet via a pipe, and the condensation passage outlet is connected to the sampling pipeline 6. Furthermore, a spiral guide plate 54 for extending the contact time is provided within the condensation passage 511, and the surface of the guide plate has a hydrophobic coating to accelerate the discharge of condensate. The refrigeration unit 52 is installed within the condensation passage 511 and is a semiconductor refrigeration chip. Its cold end is attached to the inner wall of the condensation passage 511, and its hot end is connected to a heat dissipation fin 55. The drain valve 53 is installed at the bottom of the passage, and the gas is discharged through the drain valve 53 after sufficient cooling. Further, a temperature sensor is provided below the semiconductor refrigeration chip. The temperature sensor is used to detect the temperature of the gas in the condensation passage 511 and is connected to an analyzer, which controls the temperature of the condensed gas.

[0025] Reference Figure 1 The thermocouple 7's measuring end is installed inside probe 2. A signal interface is connected in series with the circuit of thermocouple 7. The signal interface is a male connector, and the analyzer is equipped with a female connector that matches the male connector. In use, the thermocouple 7 is installed by placing its measuring end inside probe 2 and connecting the male connector of the signal interface to the female connector inside the analyzer.

[0026] Reference Figure 1The sampling line 6 is detachably connected to the tail end of the housing 1. Furthermore, the inner wall of the sampling line 6 is coated with a polytetrafluoroethylene (PTFE) coating to reduce residual smoke adsorption. The end of the sampling line 6 furthest from the housing 1 is connected to one end of the filter assembly 8 via a connector. The filter assembly 8 includes a filter tube 81, a partition 82, a water-gas separation filter element 83, and a polymer filter element 84. Preferably, the water-gas separation filter element 83 is an activated carbon fiber filter element, and the polymer filter element 84 is a polypropylene filter element. The partition 82 is disposed inside the filter tube 81, dividing the filter tube 81 into a first filter element space 811 and a second filter element space 812. The water-gas separation filter element 83 is disposed in the first filter element space 811, and the polymer filter element 84 is disposed in the second filter element space 812. The other end of the filter assembly 8 is detachably connected to the analyzer body. The connector includes a female connector located at the end of the sampling pipeline 6 furthest from the sampling handle and a male connector located at one end of the filter assembly. The end of the female connector has a rounded convex edge, and the outer side of the end of the male connector has a groove that matches the rounded convex edge. Furthermore, the outer surface of the housing 1 is covered with a heat insulation layer made of aluminum silicate fiber.

[0027] The implementation process of a detachable multi-stage pretreatment handle sampling system according to an embodiment of this application is as follows: During flue gas sampling, the flue gas is initially filtered by the coarse filter on the probe and then enters the first channel of the distributor, followed by the third channel. The third channel guides the flue gas to the condensation component, where the contact time is extended under the guidance of the spiral guide plate. After the condensation component separates and removes water from the gas, the gas reaches the sampling pipeline. Subsequently, the flue gas enters the water-gas separation filter element and the polymer filter element of the filter component for filtration, water removal, and dust removal. Finally, it enters the flue gas analyzer for flue gas analysis. At the same time, temperature data is collected synchronously through thermocouples, thereby simultaneously achieving the effects of sampling, temperature measurement, water removal, and dust removal.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dismountable multi-stage pre-treatment handle sampling system, characterized in that, It includes a housing (1), a probe (2), a distributor (4), a condenser assembly (5), a sampling line (6), a thermocouple (7), and a filter assembly (8); The housing (1) is provided with a flue gas passage (11), the probe (2) is connected to the inlet of the flue gas passage (11), and one end of the sampling pipeline (6) is connected to the outlet of the flue gas passage (11). The distributor (4) is located in the flue gas passage (11) and has a first passage (41) connected to the inlet of the flue gas passage (11), a second passage (42) connected to the outlet of the flue gas passage (11), a third passage (43) connected to the condensation assembly (5), and a distribution valve that connects the first passage (41) to the second passage (42) or to the third passage (43). The condensing assembly (5) includes a condensing shell (51), a refrigeration unit (52), and a drain valve (53). A condensing passage (511) for condensing flue gas is formed inside the condensing shell (51). The refrigeration unit (52) is installed inside the condensing passage (511), with its cold end attached to the inner wall of the condensing passage (511). The drain valve (53) is installed at the bottom of the condensing passage (511). The measuring end of the thermocouple (7) is installed inside the probe (2), and the circuit of the thermocouple (7) is connected in series with a signal interface, which is connected to the analyzer. One end of the filter assembly (8) is connected to the sampling line (6), and the other end is connected to the analyzer.

2. The dismountable multi-stage pre-treatment handle sampling system according to claim 1, wherein, A coarse filter (3) is installed at the front end of the probe (2).

3. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The cooling unit (52) is a semiconductor cooling chip.

4. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The hot end of the semiconductor cooling chip is connected to a heat dissipation fin (55).

5. The dismountable multi-stage pre-treatment handle sampling system of claim 3, wherein, A temperature sensor is provided at the semiconductor cooling chip. The temperature sensor is used to detect the temperature of the gas in the condensation passage (511), and the temperature sensor is connected to the analyzer.

6. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, A spiral guide plate (54) is provided inside the condensation passage (511), and the surface of the guide plate is provided with a hydrophobic coating.

7. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The filter assembly (8) includes a filter tube (81), a partition (82), a water-air separation filter element (83), and a polymer filter element (84). The partition (82) is disposed inside the filter tube (81) and divides the filter tube (81) into a first filter element space (811) and a second filter element space (812). The first filter element space (811) is provided with a water-air separation filter element (83), and the second filter element space (812) is provided with a polymer filter element (84).

8. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The water-air separation filter element (83) is an activated carbon fiber filter element, and the polymer filter element (84) is a polypropylene filter element.

9. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The signal interface is a male connector, and the analyzer is equipped with a female connector that matches the male connector.

10. The dismountable multi-stage pre-treatment handle sampling system of claim 1, wherein, The inner wall of the flue gas passage (11) is coated with a high-temperature resistant and corrosion-resistant coating.

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