Filtering device and cabinet type humidity analyzer

Abstract

The utility model provides a filtering device and a cabinet type humidity analyzer, the filtering device comprises a base and a filtering module, a second base part is provided with a gas flow channel, and the gas flow channel is communicated with a containing groove; the filtering module is contained in the containing groove and located between the containing groove and the gas flow channel; the filtering module comprises a plurality of filtering assemblies which are stacked in the length direction of the containing groove and conduct multiple filtering on smoke input through the gas flow channel so as to form filtered gas, and the filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor. According to the filtering device, multiple filtering is achieved on the basis of the multiple filtering assemblies, multiple filtering is conducted on smoke, so that damage to the sensing end of the humidity sensor by the smoke is reduced, the situation that the smoke is filtered only once is avoided, the filtering effect of the filtering device is improved, and meanwhile induction of the sensing end of the humidity sensor to the smoke is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cabinet - type humidity analyzers, in particular to a filtering device and a cabinet - type humidity analyzer. Background Art

[0002] With the development of technology, cabinet - type humidity analyzers are suitable for measuring the partial pressure of water vapor in a mixed gas of water vapor and air, and are widely used in the measurement and analysis of the water vapor content in high - temperature environments before and after desulfurization and denitrification of flue gas in thermal power plants, chemical plants, and steel plants. As a part of the cabinet - type humidity analyzer, the filtering device is used to filter the flue gas.

[0003] In the prior art, the existing filtering device includes a base and a filtering element. The base is provided with a receiving groove and a gas flow channel. The humidity sensor is received in the receiving groove, and the gas flow channel communicates with the receiving groove. The filtering element is located between the receiving groove and the gas flow channel, and the filtering element filters the flue gas input through the gas flow channel. The filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor. However, there is only one - stage filtration, and the flue gas is likely to damage the sensing end of the humidity sensor. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a filtering device and a cabinet - type humidity analyzer. The base is provided with a first base part and a second base part; the first base part is provided with a receiving groove for receiving a humidity sensor; the sensing end of the humidity sensor is located in the receiving groove; the second base part is arranged on one side of the first base part, and the second base part is provided with a gas flow channel that communicates with the receiving groove; a filtering module is received in the receiving groove and is located between the receiving groove and the gas flow channel; the filtering module includes a plurality of filtering components, and the plurality of filtering components are stacked along the length direction of the receiving groove and perform multi - stage filtration on the flue gas input through the gas flow channel to form filtered gas. The filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor. Based on the plurality of filtering components, multi - stage filtration is realized, and multi - stage filtration is carried out on the flue gas, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor, avoid the flue gas passing through only one - stage filtration, improve the filtering effect of the filtering device, and at the same time, ensure the sensing of the flue gas by the sensing end of the humidity sensor.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filtering device, which is applied to a cabinet - type humidity analyzer; the filtering device includes:

[0007] Base, provided with a first base portion and a second base portion; the first base portion is provided with a receiving groove for receiving a humidity sensor; the sensing end of the humidity sensor is located within the receiving groove; the second base portion is disposed on one side of the first base portion and is provided with a gas flow channel that communicates with the receiving groove;

[0008] Filter module, received within the receiving groove and located between the receiving groove and the gas flow channel; the filter module includes a plurality of filter components, and the plurality of filter components are stacked along the length direction of the receiving groove and perform multiple filtrations on the flue gas input through the gas flow channel to form filtered gas, and the filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor.

[0009] Optionally, the plurality of filter components include a primary filter membrane, the primary filter membrane is located between the receiving groove and the gas flow channel and is connected to one end of the receiving groove; the primary filter membrane is used to filter some particulate matter in the flue gas.

[0010] Optionally, the gas flow channel includes an air inlet, a first flow channel, and an exhaust port;

[0011] The air inlet and the exhaust port are respectively opened on the lower side wall of the second base portion;

[0012] The first flow channel communicates the air inlet and the exhaust port and allows some flue gas to enter the primary filter membrane and the receiving groove.

[0013] Optionally, the plurality of filter components further include an intermediate filter element, the intermediate filter element is located above the primary filter membrane and filters the flue gas output from the primary filter membrane; the intermediate filter element is used to filter corrosive gases in the flue gas.

[0014] Optionally, the intermediate filter element includes a plurality of intermediate filter membranes, and the plurality of intermediate filter membranes are stacked in sequence along the direction from bottom to top and perform different levels of filtration at different heights.

[0015] Optionally, the plurality of filter components further include a high - level filter element, the high - level filter element is located above the intermediate filter membrane and filters the flue gas output from the intermediate filter membrane.

[0016] Optionally, the high - level filter element covers the sensing end of the humidity sensor and allows the flue gas filtered by the high - level filter element to contact the sensing end of the humidity sensor; the high - level filter element blocks the flue gas to prevent the flue gas from directly impacting the sensing end of the humidity sensor.

[0017] Optionally, the high - level filter element is a high - temperature sintered filter element made of metal powder.

[0018] Optionally, the filtration pore size of the intermediate filter element is smaller than that of the primary filter membrane.

[0019] A cabinet-type humidity analyzer includes the filtration device and a humidity sensor, and the filtration device is installed on the humidity sensor.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] The present utility model provides a filtration device, the base of which is provided with a first base portion and a second base portion; the first base portion is provided with a receiving groove for receiving a humidity sensor; the sensing end of the humidity sensor is located in the receiving groove; the second base portion is disposed on one side of the first base portion, and the second base portion is provided with a gas flow channel communicating with the receiving groove; a filtration module is received in the receiving groove and is located between the receiving groove and the gas flow channel; the filtration module includes a plurality of filtration components, and the plurality of filtration components are stacked along the length direction of the receiving groove to perform multiple filtrations on the flue gas input through the gas flow channel to form filtered gas, and the filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor. Based on the plurality of filtration components, multiple filtrations are achieved, and multiple filtrations are performed on the flue gas, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor, avoid the flue gas passing through only one-stage filtration, improve the filtration effect of the filtration device, and at the same time, ensure the sensing of the flue gas by the sensing end of the humidity sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0023] In order to more fully understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals represent the same parts in the following description.

[0024] Figure 1 FIG. shows a schematic diagram of a filtration device according to an embodiment of the present application.

[0025] Figure 2 FIG. shows a cross-sectional view of a filtration device according to an embodiment of the present application.

[0026] Figure 3 FIG. shows a cross-sectional view of the second base portion of a filtration device according to an embodiment of the present application.

[0027] Figure 4Shows a schematic diagram of a filtration module of a filtration device according to an embodiment of the present application.

[0028] Figure 5 Shows a schematic diagram of a cabinet - type humidity analyzer according to another embodiment of the present application.

[0029] Reference numerals

[0030] 100, filtration device;

[0031] 10, base; 11, first base part; 11a, receiving groove; 12, second base part; 12a, gas flow channel; 12b, air inlet; 12c, first flow channel; 12d, exhaust port;

[0032] 20, filtration module; 21, filtration component; 211, primary filtration membrane; 212, intermediate filtration member; 2121, intermediate filtration membrane; 2122, powder filtration membrane; 213, high - level filtration member;

[0033] 200, cabinet - type humidity analyzer; 210, humidity sensor. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0035] Please refer to the attached Figures 1-2 , the embodiments of the present application provide a filtration device 100. The filtration device 100 is applied to a cabinet - type humidity analyzer 200. At this time, the filtration device 100 is a part of the cabinet - type humidity analyzer 200, and the filtration device 100 is used for multi - stage filtration of flue gas.

[0036] Please refer to the attached Figures 1-2 , in the embodiment of the present application, the filtration device 100 includes a base 10 and a filtration module 20. The filtration module 20 is inside the base 10. At this time, the filtration module 20 is connected to the base 10 so that the filtration module 20 can perform multi - stage filtration on the flue gas passing through the base 10.

[0037] Please refer to the attached Figures 1-3, in the embodiment of the present application, the base 10 serves as a support component of the filtration device 100. The base 10 is used to support the filtration module 20. The base 10 is provided with a first base portion 11 and a second base portion 12. The first base portion 11 is provided with a receiving groove 11a. The receiving groove 11a serves as the internal space of the first base 11. The receiving groove 11a is used to receive the humidity sensor 210, so that the humidity sensor 210 is fixed to the first base 11 through the receiving groove 11a. The sensing end of the humidity sensor 210 is located within the receiving groove 11a. The second base portion 12 is disposed on the lower side of the first base portion 11. The second base portion 12 is provided with a gas flow channel 12a. The gas flow channel 12a communicates with the receiving groove 11a. The gas flow channel 12a is used for the flue gas to flow. The flue gas penetrates into the receiving groove 11a through the gas flow channel 12a.

[0038] Please refer to the appendix Figures 1-3 , in the embodiment of the present application, the filtration module 20 is received in the receiving groove 11a and is located between the receiving groove 11a and the gas flow channel 12a. The filtration module 20 includes a plurality of filtration components 21. The plurality of filtration components 21 are stacked along the length direction of the receiving groove 11a and perform multiple filtrations on the flue gas input through the gas flow channel 12a to form filtered gas. The filtered gas passes through the sensing end of the humidity sensor 210 and is sensed by the sensing end of the humidity sensor 210. Multiple filtrations are achieved based on the plurality of filtration components 21, and multiple filtrations are performed on the flue gas, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor 210, avoid the flue gas passing through only one - stage filtration, improve the filtration effect of the filtration device 100, and at the same time, ensure the sensing of the flue gas by the sensing end of the humidity sensor 210.

[0039] Please refer to the appendix Figures 1-4 , the plurality of filtration components 21 include a primary filtration membrane 211. The primary filtration membrane 211 is located between the receiving groove 11a and the gas flow channel 12a and is connected to one end of the receiving groove 11a. The primary filtration membrane 211 is used to filter some particulate matters of the flue gas, so that the flue gas penetrates to the primary filtration membrane 211 through the gas flow channel 12a, thereby facilitating the primary filtration membrane 211 to filter some particles of the flue gas to achieve the first - stage filtration of the flue gas.

[0040] Please refer to the appendix Figures 1-3, the gas flow channel 12a includes an air inlet 12b, a first flow channel 12c, and an exhaust port 12d; the air inlet 12b and the exhaust port 12d are respectively opened on the lower side wall of the second base portion 12; the first flow channel 12c communicates the air inlet 12b and the exhaust port 12d, and allows part of the flue gas to enter the primary filter membrane 211 and the accommodation groove 11a, so that part of the flue gas sequentially passes through the air inlet 12b, the first flow channel 12c, the primary filter membrane 211, and the sensing end of the humidity sensor 210 in the accommodation groove 11a, thereby facilitating the sensing of the flue gas by the sensing end of the humidity sensor 210, and the remaining part of the flue gas penetrates to the external environment through the first flow channel 12c and the exhaust port 12d.

[0041] Please refer to the appendix Figures 1-4 The plurality of filter components 21 further includes an intermediate filter element 212. The intermediate filter element 212 is located above the primary filter membrane 211 and filters the flue gas output from the primary filter membrane 211; the intermediate filter element 212 is used to filter the corrosive gas in the flue gas, so that the flue gas sequentially passes through the primary filter membrane 211 and the intermediate filter element 212, facilitating the filtration of part of the particulate flue gas, filtering the corrosive gas through the intermediate filter element 212, and achieving a second-stage filtration through the primary filter membrane 211 and the intermediate filter element 212, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor 210, avoid the flue gas passing through only one-stage filtration, and improve the filtration effect of the filtration device 100.

[0042] Please refer to the appendix Figures 1-4 , the intermediate filter element 212 includes a plurality of intermediate filter membranes 2121. The plurality of intermediate filter membranes 2121 are arranged in a stacked manner in the up-and-down direction and perform different levels of filtration at different heights. By arranging the plurality of intermediate filter membranes 2121, the filtration effect of the intermediate filter element 212 on the particulate flue gas is increased, ensuring the filtration effect of the intermediate filter element 212 on the corrosive gas in the particulate flue gas, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor 210, avoid the flue gas passing through only one-stage filtration, and improve the filtration effect of the filtration device 100. Optionally, the intermediate filter membrane 2121 is an annular filter membrane, there are two intermediate filter membranes 2121, and a powder filter membrane 2122 is clamped between the two intermediate filter membranes 2121. The powder filter membrane 2122 can react with the corrosive gas and filter the corrosive gas.

[0043] The filtration pore diameter of the intermediate filter element 212 is smaller than that of the primary filter membrane 211, so that the filtration effect of the intermediate filter element 212 is higher than that of the primary filter membrane 211.

[0044] Please refer to the appendix Figures 1-4, the plurality of filtering components 21 further includes a high - level filter 213. The high - level filter 213 is located above the intermediate filter membrane 2121 and filters the flue gas output from the intermediate filter membrane 2121, so that the flue gas passes through the primary filter membrane 211, the intermediate filter 212, and the high - level filter 213 in sequence. Thus, it is convenient for the flue gas of corrosive gas to be filtered by the high - level filter 213, and then it is convenient for the remaining relatively clean and less corrosive flue gas to contact the humidity sensor 210. Through the primary filter membrane 211, the intermediate filter 212, and the high - level filter 213, the third - stage filtration is realized, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor 210, avoid the flue gas passing through only one - stage filtration, and improve the filtration effect of the filtering device 100.

[0045] Please refer to the appendix Figures 1-4 , the high - level filter 213 covers the sensing end of the humidity sensor 210 and allows the flue gas filtered by the high - level filter 213 to contact the sensing end of the humidity sensor 210; the high - level filter 213 blocks the flue gas to prevent the flue gas from directly impacting the sensing end of the humidity sensor 210, so that the high - level filter 213 reduces the flow velocity of the flue gas towards the sensing end of the humidity sensor 210, ensures the performance of the sensing end of the humidity sensor 210, and avoids damage to the sensing end of the humidity sensor 210. Optionally, the high - level filter 213 is a high - temperature sintered filter element made of metal powder.

[0046] Working process: When the flue gas enters the air inlet 12b, it penetrates along the first flow path 12c to the exhaust port 12d. During this process, part of the flue gas penetrates through the primary filter membrane 211 to the first base part 11. At this time, the particulate matter with a large pore size in the fine dust will be filtered out by the primary filter membrane 211, and the remaining flue gas will enter the intermediate filter 212 wrapped by a plurality of intermediate filter membranes 2121. The intermediate filter 212 will filter the particulate matter with a smaller pore size and corrosive gas in the fine dust again. At the same time, the high - level filter 213 will filter the flue gas again. Only the remaining relatively clean and less corrosive flue gas will contact the humidity sensor 210, and the high - level filter 213 will also block the direct impact of the flue gas, slow down the diffusion speed of the flue gas, and play a role in protecting the humidity sensor 210.

[0047] Please refer to the appendix Figure 5 , in another embodiment, a cabinet - type humidity analyzer 200 includes a filtering device 100 and a humidity sensor 210. The filtering device 100 is installed on the humidity sensor 210, so that the flue gas penetrates through the filtering device 100 to the humidity sensor 210, ensuring the sensing of the flue gas by the sensing end of the humidity sensor 210.

[0048] Compared with the prior art, the beneficial effects of the present utility model are:

[0049] The present utility model provides a filtering device 100, the base 10 is provided with a first base portion 11 and a second base portion 12; the first base portion 11 is provided with a receiving groove 11a for receiving a humidity sensor 210; the sensing end of the humidity sensor 210 is located within the receiving groove 11a; the second base portion 12 is disposed on one side of the first base portion 11, and the second base portion 12 is provided with a gas flow channel 12a, and the gas flow channel 12a communicates with the receiving groove 11a; the filtering module 20 is received within the receiving groove 11a and is located between the receiving groove 11a and the gas flow channel 12a; the filtering module 20 includes a plurality of filtering components 21, and the plurality of filtering components 21 are stacked along the length direction of the receiving groove 11a and perform multiple filtrations on the flue gas input through the gas flow channel 12a to form filtered gas, and the filtered gas passes through the sensing end of the humidity sensor 210 and is sensed by the sensing end of the humidity sensor 210. Multiple filtrations are achieved based on the plurality of filtering components 21, and multiple filtrations are performed on the flue gas, so as to reduce the damage of the flue gas to the sensing end of the humidity sensor 210, avoid the flue gas passing through only one-stage filtration, improve the filtering effect of the filtering device 100, and at the same time, ensure the sensing of the flue gas by the sensing end of the humidity sensor 210.

[0050] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0051] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0052] Specific examples are used herein to elaborate on the principles and implementation manners of the present application. The descriptions of the above embodiments are only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A filtering device, characterized in that, The filtering device is applied to a cabinet-type humidity analyzer; the filtering device includes: A base provided with a first base portion and a second base portion; the first base portion is provided with a receiving groove for receiving a humidity sensor; the sensing end of the humidity sensor is located within the receiving groove; the second base portion is disposed on one side of the first base portion, and the second base portion is provided with a gas flow channel that communicates with the receiving groove; A filtering module received within the receiving groove and located between the receiving groove and the gas flow channel; the filtering module includes a plurality of filtering components, and the plurality of filtering components are stacked along the length direction of the receiving groove and perform multiple filtrations on the flue gas input through the gas flow channel to form filtered gas, and the filtered gas passes through the sensing end of the humidity sensor and is sensed by the sensing end of the humidity sensor.

2. The filtering device according to claim 1, wherein The plurality of filtering components include a primary filtering membrane, and the primary filtering membrane is located between the receiving groove and the gas flow channel and is connected to one end of the receiving groove; the primary filtering membrane is used to filter some particulate matters of the flue gas.

3. The filtering device according to claim 2, characterized in that, The gas flow channel includes an air inlet, a first flow channel, and an air outlet; The air inlet and the air outlet are respectively opened on the lower sidewall of the second base portion; The first flow channel communicates the air inlet and the air outlet and allows some flue gas to enter the primary filtering membrane and the receiving groove.

4. The filtering device according to claim 2, characterized in that, The plurality of filtering components further include an intermediate filtering member, and the intermediate filtering member is located above the primary filtering membrane and filters the flue gas output from the primary filtering membrane; the intermediate filtering member is used to filter corrosive gases in the flue gas.

5. The filtering device according to claim 4, characterized in that, The intermediate filtering member includes a plurality of intermediate filtering membranes, and the plurality of intermediate filtering membranes are stacked in sequence along the direction from bottom to top and perform different levels of filtration at different heights.

6. The filtering device according to claim 5, characterized in that, The plurality of filtering components further include a high-level filtering member, and the high-level filtering member is located above the intermediate filtering membrane and filters the flue gas output from the intermediate filtering membrane.

7. The filtering device according to claim 6, wherein The high-level filtering member covers the sensing end of the humidity sensor and allows the flue gas filtered by the high-level filtering member to contact the sensing end of the humidity sensor; the high-level filtering member blocks the flue gas to prevent the flue gas from directly impacting the sensing end of the humidity sensor.

8. The filtering device according to claim 7, characterized in that, The high-level filtering member is a high-temperature sintered filter element made of metal powder.

9. The filtering device according to claim 4, characterized in that, The filtering pore diameter of the intermediate filtering member is smaller than the filtering pore diameter of the primary filtering membrane.

10. A cabinet - type humidity analyzer, characterized in that, It includes the filtering device and the humidity sensor according to any one of claims 1 to 9, and the filtering device is installed on the humidity sensor.

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