Rapid analysis gas filtering equipment for infrared heat conduction combined determination of fuel elements

Abstract

The invention relates to the technical field of filtration, in particular to rapid analysis gas filtration equipment for infrared heat conduction combined determination of fuel elements, the rapid analysis gas filtration equipment comprises a circulation part, a filtration module, an adjustment part and a detection part, the circulation part comprises a shell, through pipes are arranged on the left side and the right side of the shell, mounting openings are formed in the two sides of the interior of the shell, and the filtration module is arranged in the shell; a mounting opening is formed in the upper side of the shell, sealing grooves are formed in the left side and the right side of the mounting opening, a detection opening is formed in the upper side of a channel of the shell, a sealing sleeve is fixedly connected into a circular hole in the upper side of the shell, an extension shell is fixedly connected to a lower side opening of the shell, and the filtering module is mounted at the position of the shell and comprises a linkage plate located on the upper side of the shell. According to the gas filtering equipment disclosed by the invention, through the arrangement of structures such as the circulating part, the filtering module and the adjusting part, the gas filtering equipment can be used for quickly and efficiently replacing filtering fillers in a short time.

Description

[0001] The invention relates to the field of filtering technology, in particular to a gas filtering device for rapid analysis of fuel elements combined with infrared thermal conductivity. Background Art

[0002] The rapid analysis of fuel elements by combined infrared and thermal conductivity determination is a laboratory method for determining the carbon, hydrogen and nitrogen content in fuel samples. This method combines high-temperature combustion technology with infrared and thermal conductivity detection technology to achieve rapid and accurate determination of these key elements in the fuel.

[0003] The specific method is to burn a certain amount of sample at a high temperature with high-purity oxygen, and the sulfur oxides and halides in the combustion products are removed by the furnace reagent, while H2O (gaseous), CO2 and NOx are mixed in the gas storage tank, and a portion of the mixed gas is quantitatively extracted and sent to the infrared detection cell to determine the CO2 and H2O contents respectively, so as to calculate the carbon and hydrogen content; another portion of the mixed gas is quantitatively extracted and carried by high-purity helium as a carrier gas, and NOx is reduced to N2 by hot copper, and carbon dioxide CO2 and water H2O (gaseous) are removed by alkali asbestos and magnesium perfluorite respectively, and then enters the thermal conductivity detection cell to determine the N2 content, so as to calculate the nitrogen content. It can be seen from the above that in the high-temperature combustion process, the gas generated by the combustion of the sample needs to be filtered to remove solid particles, carbon dioxide and water. If these impurities are not removed, they may affect the subsequent test results.

[0004] The existing gas filtration equipment applicable to this method uses alkali asbestos and magnesium perfluorite to remove solid particles, carbon dioxide and moisture in the gas. After long-term use, the adsorption and absorption capacity of these fillers will gradually decrease, so they need to be regularly inspected and replaced to ensure the accuracy and reliability of gas analysis. The existing gas filtration equipment filler replacement method first requires the equipment to be disassembled, the filler is taken out, and then replaced with a new filler, and finally the equipment is reset and installed. The whole process is cumbersome and requires the gas supply to be shut down for a long time, which affects the gas filtration efficiency and the combustion element analysis efficiency. Therefore, according to the above problems, a gas filtration equipment for rapid analysis of fuel elements combined with infrared thermal conductivity is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a gas filtering device for rapid analysis of fuel elements combined with infrared thermal conductivity, so as to solve the problem that the existing gas filtering equipment needs to shut down the gas supply for a long time when replacing the filter filler, which will affect the gas filtration efficiency and the combustion element analysis efficiency.

[0006] To achieve the above object, the present invention provides the following technical solutions: A gas filtering device for rapid analysis of fuel elements by combined infrared thermal conductivity determination, comprising a circulation part, a filtering module, an adjusting part and a detecting part, wherein the circulation part comprises a shell, through pipes are provided on both left and right sides of the shell, mounting ports are provided on both sides of the interior of the shell, sealing grooves are provided on both left and right sides of the mounting port, a detection port is provided on the upper side of the channel of the shell, a sealing sleeve is fixedly connected in the upper circular hole of the shell, an extension shell is fixedly connected at the lower opening of the shell, the filtering module is installed at the shell, and the filtering module comprises a A linkage plate, wherein both left and right sides of the lower end surface of the linkage plate are provided with filling bins aligned in an upper and lower direction, a middle connecting block is fixedly connected between the upper and lower filling bins, the upper filling bins are arranged in the installation opening and fixedly connected to the linkage plate, the filling bin comprises a base shell, a detachable bin shell is installed on the inner side of the base shell, mesh covers are fixedly connected in the circular openings on both sides of the inner side of the detachable bin shell, sealing rings are fixedly connected to the outer sides of the base shell and the detachable bin shell, an alkali asbestos filler is installed in the detachable bin shell on the left side, and a magnesium perchlorate filler is installed on the inner side of the detachable bin shell on the right side.

[0007] Preferably, the adjustment part includes a screw rod rotatably connected to the hole of the extension shell, the lower end of the screw rod is fixedly connected to an adjustment knob, the outer side of the screw rod is spirally connected to a thread sleeve, the outer side of the thread sleeve is fixedly connected to a transmission tube, and the upper end of the transmission tube passes through a sealing sleeve and is fixedly connected to a linkage plate.

[0008] Preferably, the sealing groove is an annular groove structure, the sealing ring on the upper side is arranged on the inner side of the sealing groove, slots are opened on the upper and lower sides of the interior of the base shell, and the upper and lower sides of the detachable warehouse shell close to the end surface of the base shell are fixedly connected with insertion strips, and the insertion strips are inserted into the inner side of the slots.

[0009] Preferably, the alkali asbestos filler and the magnesium perchlorate filler are both granular fillers, and the alkali asbestos filler and the magnesium perchlorate filler are both arranged between a group of mesh covers.

[0010] Preferably, the detachable storage shells are both received inside the base shell, the outer end surfaces of the base shell and the detachable storage shell are both fitted with the inner wall of the mounting opening, and the height dimension of the base shell is the same as the inner height dimension of the mounting opening.

[0011] Preferably, the detection part includes a protective cover shell which is located on the inner side of the shell and fixedly connected to the inner wall of the extension shell, a rail groove is opened on the upper part of the left end surface of the protective cover shell, and the left end surface of the protective cover shell is symmetrically fixedly connected with rail frames on both sides of the lower part of the rail groove, a support frame is fixedly connected to the left side of the protective cover shell, an elastic band is fixedly connected to the inner side of the circular ring of the support frame, a prompt guide bar is slidably connected to the inner side of the rail groove, the upper end of the prompt guide bar is located on the inner side of the detection port, and a transmission block in contact with the lower end of the prompt guide bar is slidably connected between a group of the rail frames.

[0012] Preferably, the elastic belt is a circular surface belt structure, the center of the elastic belt is aligned and contacted with the transmission block, the transmission block and the prompt guide bar are in contact through an inclined surface, the prompt guide bar is aligned with the gate of the linkage plate, the detection part is arranged at the filter module, and the protective shell is arranged on the outside of the transmission tube and the screw rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by providing structures such as a circulation part, a filter module and an adjustment part, the circulation part supports the filter module and the adjustment part, and the circulation part cooperates with the filter module to filter the circulating gas, and the filter module provides two filling bins for each type of filler, so that new fillers can be pre-installed in the filling bin outside the installation port, so that when replacement is required, the positions of the upper and lower filling bins can be adjusted by the adjustment part to complete the replacement of the filler, so that the gas filter device can quickly and efficiently replace the filter filler in a short time, and solves the problem that the existing gas filter device needs to shut down the gas supply for a long time when replacing the filter filler, which will affect the gas filtration efficiency and the combustion element analysis efficiency; 2. In the present invention, by setting structures such as the circulation part, the filtering module and the detection part, the airflow will pass through the circulation part, the filling bin and the alkali asbestos filling during the filtering operation. If the gas flow is normal, it indicates that the filling does not need to be replaced. If the gas flow decreases, it indicates that the filling may be saturated and needs to be replaced. When the gas passes through, the airflow will push the elastic band to deform and expand to the right, and then push the transmission block to move right guided by the rail frame. The right movement of the transmission block will squeeze the prompt guide bar, causing the prompt guide bar to move upward so that its upper end is exposed from the detection port. The staff can judge the flow rate of the internal airflow by observing the exposure range of the prompt guide bar, so as to judge whether the filling needs to be replaced, so that the gas filtering equipment can detect the internal gas flow in real time, so as to provide a reference for the staff whether it is necessary to replace the filter filling, thereby avoiding the situation where the filter filling is replaced in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure viewed from above; Figure 3 For the present invention Figure 1 A schematic cross-sectional structure diagram of ; Figure 4 It is a cross-sectional structural schematic diagram of the circulation part of the present invention; Figure 5 It is a structural schematic diagram of the filtering module of the present invention; Figure 6It is a structural schematic diagram of the filling bin of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the split structure; Figure 8 For the present invention Figure 7 Another perspective structural diagram of; Fig. 9 For the present invention Figure 5 A schematic diagram of a front cross-sectional structure; Fig.10 It is a schematic cross-sectional structure diagram of the adjustment part of the present invention; Fig.11 It is a structural schematic diagram of the detection part of the present invention; Fig.12 It is a schematic diagram of the structure of the protective cover of the present invention; Fig.13 The present invention provides a schematic structural diagram of the guide bar and the transmission block.

[0015] In the figure: 1. circulation part; 11. shell; 12. through pipe; 13. installation port; 14. sealing groove; 15. detection port; 16. sealing sleeve; 17. extension shell; 2. filter module; 21. linkage plate; 22. stuffing bin; 221. base shell; 222. removable bin shell; 223. mesh cover; 224. insert; 225. slot; 226. sealing ring; 23. middle connection block; 24. alkali asbestos filler; 25. magnesium perchlorate filler; 3. adjustment part; 31. screw rod; 32. thread sleeve; 33. adjustment knob; 34. transmission pipe; 4. detection part; 41. protective cover shell; 42. rail groove; 43. rail frame; 44. support frame; 45. elastic belt; 46. prompt guide strip; 47. transmission block. DETAILED DESCRIPTION

[0016] See also Figure 1-13 , the present invention provides a technical solution: A gas filtering device for rapid analysis of fuel elements by combined infrared thermal conductivity determination, comprising a circulation part 1, a filtering module 2, an adjusting part 3 and a detecting part 4, wherein the circulation part 1 comprises a shell 11, through pipes 12 are provided on both left and right sides of the shell 11, mounting openings 13 are provided on both sides of the interior of the shell 11, sealing grooves 14 are provided on both left and right sides of the mounting opening 13, a detecting opening 15 is provided on the upper side of the passage of the shell 11, a sealing sleeve 16 is fixedly connected in the upper circular hole of the shell 11, an extension shell 17 is fixedly connected at the lower side opening of the shell 11, the filtering module 2 is installed at the shell 11, the filtering module 2 comprises a linkage plate 21 on the upper side of the shell 11, and a filling bin 22 arranged in an upper and lower alignment is provided on both left and right sides of the lower end surface of the linkage plate 21, and the upper and lower filling bins are provided with a sealing sleeve 16 fixedly connected in the upper circular hole of the shell 11, and an extension shell 17 is fixedly connected at the lower side opening of the shell 11, and the filtering module 2 is installed at the shell 11, and the filtering module 2 comprises a linkage plate 21 on the upper side of the shell 11, and a filling bin 22 arranged in an upper and lower alignment is provided on both left and right sides of the lower end surface of the linkage plate 21, and the upper and lower filling bins are provided with a sealing sleeve 16 fixedly connected in the upper circular hole of the shell 11, and an extension shell 17 is fixedly connected at the lower side opening of the shell 11, and the filtering module 2 comprises a linkage plate 21 on the upper side of the shell 11, and a sealing sleeve 16 fixedly connected in the upper circular hole of the shell 11, and an extension shell 17 is fixedly connected at the lower side opening of the shell 11, and 22 are fixedly connected with a middle connecting block 23, the upper filling bin 22 is arranged in the installation port 13 and is fixedly connected to the linkage plate 21, the filling bin 22 includes a base shell 221, a detachable bin shell 222 is installed on the inner side of the base shell 221, and a mesh cover 223 is fixedly connected to the circular openings on both sides of the inner side of the detachable bin shell 222, and a sealing ring 226 is fixedly connected to the outer side of the base shell 221 and the detachable bin shell 222, an alkali asbestos filler 24 is installed in the left detachable bin shell 222, and a magnesium perchlorate filler 25 is installed on the inner side of the right detachable bin shell 222; the adjusting part 3 includes a screw rod 31 rotatably connected to the hole position of the extension shell 17, a knob 33 is fixedly connected to the lower end of the screw rod 31, a silk sleeve 32 is spirally connected to the outer side of the screw rod 31, and a silk sleeve 32 is fixedly connected to the outer side of the silk sleeve The transmission tube 34 is provided so that the adjustment part 3 can control the displacement of the filter module 2. The upper end of the transmission tube 34 passes through the sealing sleeve 16 and is fixedly connected to the linkage plate 21. The adjustment part 3 can control the displacement of the filter module 2. The sealing groove 14 is a ring groove structure. The upper sealing ring 226 is arranged on the inner side of the sealing groove 14. The sealing ring 226 and the sealing groove 14 can seal the filling bin 22 and the installation port 13 through this arrangement, and at the same time, the filling bin 22 is positioned. Slots 225 are provided on the upper and lower sides of the interior of the base shell 221. The upper and lower sides of the detachable bin shell 222 close to the end surface of the base shell 221 are fixedly connected with inserts 224. The inserts 224 are inserted into the inner side of the slots 225. This arrangement improves the base shell 221 and The connection between the detachable shells 222; the alkali asbestos filler 24 and the magnesium perchlorate filler 25 are both granular fillers, and the alkali asbestos filler 24 and the magnesium perchlorate filler 25 are both arranged between a group of mesh covers 223. Through this arrangement, the arrangement of the mesh covers 223 can allow gas to circulate on the one hand, and on the other hand, the filler can be limited in the detachable shell 222; the detachable shells 222 are all received in the inner side of the base shell 221, and the outer end faces of the base shell 221 and the detachable shell 222 are both in contact with the inner wall of the installation port 13, and the height dimension of the base shell 221 is the same as the inner height dimension of the installation port 13. Through this arrangement, the filling bin 22 in the installation port 13 remains stable when the airflow passes through, and it is also convenient for the user to determine whether the replaced filling bin 22 is installed in place.

[0017] like Figure 3 , Figure 11-13 As shown, the detection part 4 includes a protective sleeve shell 41 which is located on the inner side of the shell 11 and fixedly connected to the inner wall of the extension shell 17. A rail groove 42 is opened on the upper part of the left end surface of the protective sleeve shell 41. The left end surface of the protective sleeve shell 41 is symmetrically fixedly connected with rail frames 43 located on both sides of the lower part of the rail groove 42. A support frame 44 is fixedly connected to the left side of the protective sleeve shell 41. An elastic belt 45 is fixedly connected to the inner side of the circular ring of the support frame 44. A prompt guide bar 46 is slidably connected to the inner side of the rail groove 42. The upper end of the prompt guide bar 46 is located on the inner side of the detection port 15. A transmission block 47 in contact with the lower end of the prompt guide bar 46 is slidably connected between a group of rail frames 43. When gas passes through this setting, the airflow will push the elastic belt 45 to deform and expand to the right, thereby pushing the transmission block 47 to move right with the rail frame 43 as the guide. The rightward movement of the transmission block 47 will squeeze the prompt guide bar 46, causing the prompt guide bar 46 to move upward, so that its upper end is out of the detection port 15. 5, the staff can judge the flow of the internal airflow by observing the exposure range of the prompt guide bar 46, so as to judge whether the filler needs to be replaced; the elastic band 45 is a circular surface band structure, and the center of the elastic band 45 is aligned and contacted with the transmission block 47. Through this arrangement, the deformation of the elastic band 45 will promote the displacement of the transmission block 47, and the transmission block 47 and the prompt guide bar 46 are in contact through the inclined surface. Through this arrangement, the displacement of the transmission block 47 can push up the prompt guide bar 46, and the prompt guide bar 46 is aligned with the gate of the linkage plate 21. Through this arrangement, the upward movement of the prompt guide bar 46 will not be interfered by the linkage plate 21. The detection unit 4 is arranged at the filter module 2, and the protective shell 41 is sleeved on the outside of the transmission tube 34 and the screw rod 31. Through this arrangement, the protective shell 41 can protect the screw rod 31 to prevent moisture or other components in the gas from affecting the screw rod 31.

[0018] Workflow: The operating steps of the gas filtration equipment for rapid analysis of fuel elements combined with infrared thermal conductivity are as follows. Note: For the rapid analysis operating steps of the infrared thermal conductivity combined with fuel elements, please see the second paragraph of the background technology; during the analysis operation, the gas generated by the combustion of the sample needs to be filtered to remove solid particles, carbon dioxide and moisture. When the gas passes through the through pipe 12 and the shell 11 of the circulation part 1 from left to right, it will pass through each filling bin 22 at the installation port 13, so that the circulating gas will contact the alkali asbestos filler 24 and the magnesium perchlorate filler 25. First, part of the carbon dioxide and solid particles in the gas are removed by the alkali asbestos filler 24, and then the moisture and carbon dioxide in the gas are further removed by the magnesium perchlorate filler 25 (the magnesium perchlorate filler 25 can react with carbon dioxide when the gas passes through to form a solid compound, thereby removing carbon dioxide in the gas). The above steps are completed. Filtering operation of the gas; replacement detection operation. During the filtering operation, the airflow will pass through the circulation part 1, the filling bin 22 and the alkali asbestos filler 24. If the gas flow is normal, it indicates that the filler does not need to be replaced. If the gas flow decreases, it indicates that the filler may be saturated and needs to be replaced. When the gas passes through, the airflow will push the elastic band 45 to deform and expand to the right, thereby pushing the transmission block 47 to move right with the rail frame 43 as the guide, and the rightward movement of the transmission block 47 will squeeze the prompt guide bar 46, so that the prompt guide bar 46 moves upward, so that its upper end is exposed from the detection port 15. The staff can judge the flow rate of the internal airflow by observing the exposure amplitude of the prompt guide bar 46, so as to judge whether the filler needs to be replaced. The replacement detection operation of the filler is performed through the above steps, so that the gas filtering equipment can detect the internal gas flow in real time, so as to provide a reference for the staff whether it is necessary to replace the filter filler;For the quick replacement operation, the filling bin 22 which is not in the installation port 13 is disassembled in advance, the detachable bin shell 222 is removed from the base shell 221, and then new filling is placed in the detachable bin shell 222 (the alkali asbestos filling 24 is placed in the left detachable bin shell 222, and the magnesium perchlorate filling 25 is placed in the right detachable bin shell 222), so that the filling is between a group of mesh covers 223. At this time, the detachable bin shell 222 loaded with the new filling can be reset back to the base shell 221, and the insert 224 of the detachable bin shell 222 is inserted into the slot 225 of the base shell 221 to complete the reset. The pre-installation operation before replacement is completed through the above steps. When the staff needs to replace the filling participating in the filtration at the installation port 13, first turn off the gas supply, and then through The knob 33 is turned to drive the screw rod 31 to rotate. The rotation of the screw rod 31 will cause the thread sleeve 32 to drive the transmission tube 34 to move upward. The upward movement of the transmission tube 34 will push the linkage plate 21 to move upward, and then drive the entire filter module 2 to move upward, so that the lower filling bin 22 carries the pre-installed new filling into the installation port 13, and the sealing ring 226 is inserted into the sealing groove 14 to ensure the seal during filtration. Through the above operation, the rapid replacement of the filling for filtration is completed. At this time, the staff can open the gas supply for filtration operation. At the same time, the upper filling bin 22 will carry the old filling out of the installation port 13. At this time, the staff can pre-install the upper filling bin 22 with a new filling, so that the gas filtration equipment can quickly and efficiently replace the filling for filtration in a short time. ;

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A gas filtration device for rapid analysis of fuel elements by combined infrared thermal conductivity determination, comprising a circulation unit (1), a filtration module (2), a regulating unit (3) and a detection unit (4), characterized in that: The circulation part (1) comprises a shell (11), the left and right sides of the shell (11) are provided with through pipes (12), the inside of the shell (11) is provided with mounting openings (13), the left and right sides of the mounting opening (13) are provided with sealing grooves (14), the upper side of the channel of the shell (11) is provided with a detection opening (15), the upper circular hole of the shell (11) is fixedly connected with a sealing sleeve (16), the lower opening of the shell (11) is fixedly connected with an extension shell (17), the filter module (2) is installed on the shell (11), the filter module (2) comprises a linkage plate (21) located on the upper side of the shell (11), and the lower end surface of the linkage plate (21) is provided with a plurality of upper and lower aligned grooves (15) on both sides. A filling bin (22) is provided, wherein a middle connection block (23) is fixedly connected between the upper and lower filling bins (22), the upper filling bins (22) are arranged in the installation opening (13) and are fixedly connected to the linkage plate (21), the filling bin (22) comprises a base shell (221), a detachable bin shell (222) is installed on the inner side of the base shell (221), mesh covers (223) are fixedly connected in the inner two side circular openings of the detachable bin shell (222), sealing rings (226) are fixedly connected on the outer sides of the base shell (221) and the detachable bin shell (222), an alkali asbestos filler (24) is installed in the left detachable bin shell (222), and a magnesium perchlorate filler (25) is installed in the right detachable bin shell (222).

2. The gas filtration device for rapid analysis of fuel elements by infrared thermal conductivity combined with determination according to claim 1 is characterized in that: The adjusting portion (3) comprises a screw rod (31) rotatably connected to a hole of the extension shell (17); an adjusting knob (33) is fixedly connected to the lower end of the screw rod (31); a thread sleeve (32) is spirally connected to the outer side of the screw rod (31); a transmission tube (34) is fixedly connected to the outer side of the thread sleeve (32); and an upper end of the transmission tube (34) passes through a sealing sleeve (16) and is fixedly connected to the linkage plate (21).

3. The gas filtration equipment for rapid analysis of fuel elements by infrared thermal conductivity combined determination according to claim 1 is characterized by: The sealing groove (14) is a ring groove structure, the sealing ring (226) on the upper side is arranged on the inner side of the sealing groove (14), the inner side of the base shell (221) is provided with slots (225) on the upper and lower sides, and the upper and lower sides of the detachable chamber shell (222) close to the end surface of the base shell (221) are fixedly connected with inserting strips (224), and the inserting strips (224) are inserted into the inner side of the slots (225).

4. The gas filtration equipment for rapid analysis of fuel elements by combined infrared thermal conductivity determination according to claim 1 is characterized in that: The alkali asbestos filler (24) and the magnesium perchlorate filler (25) are both granular fillers, and the alkali asbestos filler (24) and the magnesium perchlorate filler (25) are both arranged between a group of mesh covers (223).

5. The gas filtration equipment for rapid analysis of fuel elements by combined infrared thermal conductivity determination according to claim 1, characterized in that: The detachable storage shell (222) is accommodated inside the base shell (221), the outer end surfaces of the base shell (221) and the detachable storage shell (222) are both in contact with the inner wall of the mounting opening (13), and the height dimension of the base shell (221) is the same as the inner height dimension of the mounting opening (13).

6. The gas filtration device for rapid analysis of fuel elements by combined infrared thermal conductivity determination according to claim 1, characterized in that: The detection part (4) comprises a protective sleeve (41) located inside the shell (11) and fixedly connected to the inner wall of the extension shell (17); a rail groove (42) is provided on the upper part of the left end surface of the protective sleeve (41); rail frames (43) located on both sides of the lower part of the rail groove (42) are symmetrically fixedly connected to the left end surface of the protective sleeve (41); a support frame (44) is fixedly connected to the left side of the protective sleeve (41); an elastic band (45) is fixedly connected to the inner side of the circular ring of the support frame (44); a prompt guide bar (46) is slidably connected to the inner side of the rail groove (42); the upper end of the prompt guide bar (46) is located inside the detection port (15); and a transmission block (47) in contact with the lower end of the prompt guide bar (46) is slidably connected between a group of the rail frames (43).

7. The gas filtration device for rapid analysis of fuel elements by combined infrared thermal conductivity determination according to claim 6 is characterized by: The elastic band (45) is a circular band structure, the center of the elastic band (45) is aligned and in contact with the transmission block (47), the transmission block (47) is in contact with the prompt guide bar (46) via an inclined surface, the prompt guide bar (46) is aligned with the gate opening of the linkage plate (21), the detection unit (4) is arranged at the filter module (2), and the protective housing (41) is sleeved on the outside of the transmission tube (34) and the screw rod (31).

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