A gas drying water removal device for a gas analyzer

Abstract

The present disclosure relates to a gas drying and water removing device for a gas analyzer, comprising: an inner barrel, detachably provided with a mesh plate, the mesh plate dividing an inner cavity of the inner barrel into an upper cavity and a lower cavity, the lower cavity being provided with a filter module capable of blocking impurities, the lower cavity being further provided with an air inlet pipe located below the filter module, and the upper cavity being provided with an adsorbent for adsorbing moisture; an outer barrel, sleeved outside the inner barrel and forming a flow guide channel with the inner barrel, wherein a bottom end of the outer barrel is provided with a cold air inlet, the flow guide channel being communicated with a refrigerating device through the cold air inlet, and a top end of the outer barrel being provided with a cold air outlet; and a cover, provided on the outer barrel and provided with an air outlet pipe. Through the above technical solution, the gas drying and water removing device for the gas analyzer can effectively remove moisture and impurities in the gas, improve the accuracy of gas analysis, and prolong the service life of the gas analyzer.

Description

Technical Field

[0001] This disclosure relates to the field of gas analysis technology, and more specifically, to a gas drying and dehydration device for a gas analyzer. Background Technology

[0002] In gas analysis during chemical production, moisture and impurities are two key interfering factors, and their impact is mainly reflected in two aspects:

[0003] On the one hand, both moisture and impurities can interfere with sensor performance. Moisture and impurities alter the active state of the gas sensor surface, interfering with the adsorption and reaction processes of the target gas, leading to signal drift or distortion, and directly reducing the accuracy and repeatability of the analysis results. Furthermore, impurities can significantly impact the accuracy, lifespan, and maintenance frequency of the equipment.

[0004] On the other hand, the coexistence of moisture and certain gases can exacerbate equipment wear and tear. When moisture encounters corrosive gases such as hydrogen sulfide and hydrogen chloride, it quickly forms a highly corrosive acidic solution. This solution can then penetrate the instrument's internal piping, valves, seals, and other critical components, causing electrochemical corrosion of metallic parts and swelling and aging of non-metallic materials. This not only increases the frequency of equipment maintenance and replacement costs but can also lead to analytical interruptions due to sudden failure of core components, thereby affecting the timeliness of process adjustments or quality control decisions. Utility Model Content

[0005] The purpose of this disclosure is to provide a gas drying and dehydration device for a gas analyzer, which can effectively remove moisture and impurities from the gas, improve the accuracy of gas analysis, and extend the service life of the gas analyzer.

[0006] To achieve the above objectives, this disclosure provides a gas drying and dehydration device for a gas analyzer, comprising: an inner barrel, detachably equipped with a mesh plate, the mesh plate dividing the inner cavity of the inner barrel into an upper cavity and a lower cavity, the lower cavity being equipped with a filter module capable of blocking impurities, and the lower cavity also being equipped with an air inlet pipe located below the filter module; the upper cavity being equipped with an adsorbent for adsorbing moisture; an outer barrel, fitted outside the inner barrel and forming a flow channel between the outer barrel and the inner barrel, wherein the bottom end of the outer barrel is equipped with a cold air inlet, the flow channel being connected to a cooler through the cold air inlet, and the top end of the outer barrel is equipped with a cold air outlet; and a cover, covering the outer barrel and equipped with an air outlet pipe.

[0007] Optionally, the filter module is detachably disposed in the lower cavity, and the filter module includes a first filter layer and a second filter layer located above the first filter layer.

[0008] Optionally, at least two L-shaped plug-in blocks are evenly arranged circumferentially on the side wall of the lower cavity. The first filter layer and the second filter layer are each provided with a plug hole corresponding to the L-shaped plug-in block. The first filter layer and the second filter layer are sequentially plugged into the corresponding L-shaped plug-in block through the plug hole.

[0009] Optionally, the first filter layer is constructed as a sintered metal mesh layer; the second filter layer is constructed as a polytetrafluoroethylene membrane layer.

[0010] Optionally, the outer wall of the inner tub is provided with spiral blades, which extend from the bottom to the top of the inner tub, and the spiral blades, the inner tub, and the outer tub enclose the flow channel to form the flow channel. The cold air inlet and the cold air outlet are both connected to the flow channel.

[0011] Optionally, the width of the flow channel gradually narrows from bottom to top.

[0012] Optionally, the bottom of the inner tub is provided with a seat, the upper end of the seat is provided with an annular flange, the annular flange is provided with an external thread, the lower end of the inner wall of the outer tub is provided with an internal thread that mates with the external thread, the air inlet pipe passes through the annular flange and communicates with the outside, the bottom of the seat is provided with a drain pipe, one end of the drain pipe is located inside the inner tub, and the other end extends to the outside of the seat, wherein the drain pipe is provided with a control valve.

[0013] Optionally, the bottom of the seat is provided with multiple support legs.

[0014] Through the above technical solution, the gas drying and dehydration device for a gas analyzer disclosed herein includes an inner barrel, an outer barrel, and a cover. By setting a mesh plate inside the inner barrel to divide the inner cavity, the gas, after entering the inner barrel, first passes through the filter module in the lower cavity to remove impurities, and then enters the upper cavity where the adsorbent adsorbs moisture. This achieves stepwise processing of impurity filtration and moisture adsorption, improving the gas purification effect, reducing the corrosion of internal pipelines, valves, and seals of the gas analyzer by impurities and moisture, and helping to improve the accuracy of gas analysis. In addition, the outer barrel of this disclosure is fitted outside the inner barrel, and a guide channel is formed between the two barrels. The bottom of the outer barrel is provided with a cold air inlet, and the guide channel is connected to the cooler through the cold air inlet. The top of the outer barrel is provided with a cold air outlet, which allows the cold air generated by the cooler to enter the guide channel through the cold air inlet, cooling the gas passing through the inner barrel, further reducing the moisture content in the gas, and improving the dehydration effect.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a gas drying and dehydration device for a gas analyzer provided in an embodiment of this disclosure;

[0018] Figure 2 This is a schematic diagram of the internal structure of the inner barrel provided in an embodiment of this disclosure;

[0019] Figure 3 This is a schematic diagram of the structure of the filtering module provided in the embodiments of this disclosure.

[0020] Explanation of reference numerals in the attached drawings: 1. Inner barrel; 11. Upper cavity; 12. Lower cavity; 121. L-shaped connector; 13. Air inlet pipe; 14. Spiral blade; 15. Seat; 151. Drain pipe; 152. Control valve; 2. Mesh plate; 3. Filter module; 31. First filter layer; 311. Insertion hole; 32. Second filter layer; 4. Adsorbent; 5. Outer barrel; 51. Guide channel; 52. Cold air inlet; 53. Cold air outlet; 6. Cover; 61. Air outlet pipe; 7. Support leg. Detailed Implementation

[0021] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0022] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the relative positions of the corresponding components in the direction of gravity when they are in use, and "inner" and "outer" refer to their relative positions to the contours of the corresponding components themselves. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not have sequential or importance implications. In the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0023] According to exemplary embodiments of this disclosure, reference is made to Figure 1 and Figure 2As shown, a gas drying and dehydration device for a gas analyzer is provided, comprising: an inner barrel 1, detachably equipped with a mesh plate 2, the mesh plate 2 dividing the inner cavity of the inner barrel 1 into an upper cavity 11 and a lower cavity 12, the lower cavity 12 being equipped with a filter module 3 capable of blocking impurities, and the lower cavity 12 also being equipped with an air inlet pipe 13 located below the filter module 3; the upper cavity 11 being equipped with an adsorbent 4 for adsorbing moisture; an outer barrel 5, fitted outside the inner barrel 1, and forming a flow channel 51 between the outer barrel 1 and the inner barrel 1, wherein the bottom end of the outer barrel 5 is provided with a cold air inlet 52, the flow channel 51 is connected to a cooler through the cold air inlet 52, and the top end of the outer barrel 5 is provided with a cold air outlet 53; and a cover 6, covering the outer barrel 5 and equipped with an air outlet pipe 61.

[0024] Through the above technical solution, the gas drying and dehydration device for a gas analyzer disclosed herein includes an inner barrel 1, an outer barrel 5, and a cover 6. By setting a mesh plate 2 inside the inner barrel 1 to divide the inner cavity of the inner barrel 1, the gas, after entering the inner barrel 1, first passes through the filter module 3 in the lower cavity 12 to remove impurities, and then enters the upper cavity 11, where the adsorbent 4 adsorbs moisture. This achieves stepwise processing of impurity filtration and moisture adsorption, improves the gas purification effect, reduces the corrosion of impurities and moisture on the internal pipelines, valves, and seals of the gas analyzer, and helps to improve the accuracy of gas analysis. In addition, the outer barrel 5 of this disclosure is fitted outside the inner barrel 1, and a guide channel 51 is formed between the two. The bottom end of the outer barrel 5 is provided with a cold air inlet 52, and the guide channel 51 is connected to the cooler through the cold air inlet 52. The top end of the outer barrel 5 is provided with a cold air outlet 53, which allows the cold air generated by the cooler to enter the guide channel 51 through the cold air inlet 52 to cool the gas passing through the inner barrel 1, further reducing the moisture content in the gas and improving the dehydration effect.

[0025] In this disclosure, the purified gas is discharged through the gas outlet pipe 61 on the cover 6 so that it can enter the gas analyzer for analysis. In order to improve the reliability of the connection between the cover 6 and the outer barrel 5, screws can be used to connect the cover 6 and the outer barrel 5.

[0026] It should be noted that this disclosure allows the mesh plate 2 to be snapped onto the inner barrel 1 or connected by screws, and this disclosure does not impose any specific restrictions on this.

[0027] According to exemplary embodiments of this disclosure, referring to Figure 2 As shown, the filter module 3 is detachably disposed within the lower cavity 12, as indicated. Figure 3As shown, the filter module 3 includes a first filter layer 31 and a second filter layer 32 located above the first filter layer 31. In the above technical solution, the filter module 3 is detachable, making it convenient to clean or replace after a period of use, ensuring the continuity of the filtration effect; the dual-layer filtration structure can more effectively block impurities of different particle sizes, improving the filtration effect. Specifically, the first filter layer 31 can first filter larger particle sizes of impurities, while the second filter layer 32 further filters smaller particle sizes of impurities, achieving multi-stage filtration of impurities.

[0028] According to exemplary embodiments of this disclosure, referring to Figure 2 As shown, at least two L-shaped plug-in blocks 121 are evenly arranged circumferentially on the side wall of the lower cavity 12. The first filter layer 31 and the second filter layer 32 each have plug holes 311 corresponding to the L-shaped plug-in blocks 121. The first filter layer 31 and the second filter layer 32 are sequentially plugged into the corresponding L-shaped plug-in blocks 121 through the plug holes 311. This plug-in connection method is simple and convenient. During installation, simply align the plug holes 311 on the first filter layer 31 and the second filter layer 32 with the L-shaped plug-in blocks 121 and insert them. The connection is secure, ensuring that the filter layers will not shift during gas flow and guaranteeing the stability of the filtration effect. Furthermore, when it is necessary to disassemble, clean, or replace the filter layers, the first filter layer 31 and the second filter layer 32 can be easily pulled out from the L-shaped plug-in blocks 121, making operation convenient.

[0029] In this disclosure, the number of L-shaped plug-in blocks 121 can be set to two or three, and this disclosure does not impose a specific limitation on this.

[0030] According to an exemplary embodiment of this disclosure, the first filter layer 31 can be constructed as a sintered metal mesh layer; the second filter layer 32 can be constructed as a polytetrafluoroethylene (PTFE) membrane layer. The sintered metal mesh layer has high mechanical strength and rigidity, can withstand high gas pressure, is not easily deformed, and has high filtration accuracy, effectively filtering out larger particle sizes. Simultaneously, the pore structure of the sintered metal mesh layer is stable, and the mesh size does not easily change during long-term use, ensuring consistent filtration performance. The PTFE membrane layer has excellent chemical corrosion resistance, can resist the erosion of various corrosive substances that may be present in the gas, can filter out extremely fine impurity particles, and has good hydrophobicity, so that while filtering impurities, it will not affect the filtration effect due to moisture adsorption, and can also prevent moisture from interfering with subsequent gas purification processes.

[0031] According to exemplary embodiments of this disclosure, referring to Figure 2As shown, the outer wall of the inner barrel 1 is provided with spiral blades 14, which extend from the bottom to the top of the inner barrel 1. The spiral blades 14, together with the inner barrel 1 and the outer barrel 5, form a guide channel 51. The cold air inlet 52 and the cold air outlet 53 are both connected to the guide channel 51. By setting the spiral blades 14, the cold air can rise along the spiral path when flowing in the guide channel 51, increasing the contact area and contact time between the cold air and the inner barrel 1, thereby more effectively cooling the gas passing through the inner barrel 1, improving the cooling efficiency, and further enhancing the dewatering effect.

[0032] According to exemplary embodiments of this disclosure, referring to Figure 2 As shown, the width of the flow channel 51 gradually narrows from bottom to top. Through this design, the flow rate of the cold air gradually increases as it rises, enhancing the heat exchange efficiency between the cold air and the inner barrel 1, and further improving the cooling effect on the gas.

[0033] According to exemplary embodiments of this disclosure, referring to Figure 1 and Figure 2 As shown, the bottom of the inner barrel 1 is provided with a base 15, and the upper end of the base 15 is provided with an annular flange (not shown in the figure). The annular flange is provided with an external thread, and the lower end of the inner wall of the outer barrel 5 is provided with an internal thread that mates with the external thread. The air inlet pipe 13 passes through the annular flange and communicates with the outside. The bottom of the base 15 is provided with a drain pipe 151, one end of which is located inside the inner barrel 1, and the other end extends to the outside of the base 15. The drain pipe 151 is provided with a control valve 152. In the above technical solution, the outer barrel 5 and the annular flange are connected by threads, which facilitates the installation and disassembly of the outer barrel 5 and makes it easy to maintain and clean the inside of the gas drying and dehydration device for the gas analyzer disclosed herein. During the gas purification process, moisture and impurities will condense and accumulate at the bottom of the inner barrel 1. By opening the control valve 152 on the drain pipe 151, the accumulated moisture and impurities can be discharged.

[0034] According to exemplary embodiments of this disclosure, referring to Figure 1 and Figure 2 As shown, the bottom of the base 15 is provided with multiple support legs 7. The support legs 7 enable the gas drying and dehydration device for gas analyzers disclosed herein to be stably placed on the workbench, ensuring the stability of the gas drying and dehydration device for gas analyzers disclosed herein during operation, and helping to improve the gas purification effect and safety.

[0035] Reference Figures 1 to 3 As shown, the installation and operation process of the gas drying and dehydration device for a gas analyzer disclosed in this invention is as follows:

[0036] Installation process: Place the outer barrel 5 onto the inner barrel 1 from top to bottom, and screw the bottom of the outer barrel 5 onto the annular flange threaded connection on the base 15. At this time, the spiral blades 14 on the outer wall of the inner barrel 1 and the inner wall of the outer barrel 5 form a flow channel 51. Then, insert the first filter layer 31 and the second filter layer 32 of the filter module 3 into the L-shaped plug-in block 121 on the side wall of the lower cavity 12 through the plug hole 311. After that, place the mesh plate 2 inside the inner barrel 1 and connect the mesh plate 2 inside the inner barrel 1. Next, arrange the adsorbent 4 on the mesh plate 2, wherein the adsorbent 4 can be silica gel or activated carbon. Finally, cover the outer barrel 5 with the cover 6 and fix the cover 6 to the outer barrel 5 with screws.

[0037] Working process: The gas to be analyzed enters the lower cavity 12 of the inner barrel 1 through the inlet pipe 13. First, it passes through the filter module 3. Larger particles are blocked by the first filter layer 31, while smaller particles are filtered by the second filter layer 32. The gas filtered by the filter module 3 enters the upper cavity 11, where the adsorbent 4 adsorbs moisture. At the same time, the cold air generated by the refrigerator enters the guide channel 51 through the cold air inlet 52 and rises along the spiral path formed by the spiral blades 14. During the ascent, the gas passing through the inner barrel 1 is cooled, causing the moisture in the gas to condense further. The condensed moisture accumulates at the bottom of the inner barrel 1. The gas, after purification and cooling to remove water, is discharged through the outlet pipe 61 and enters the gas analyzer for analysis. During the above process, when a large amount of moisture accumulates at the bottom of the inner barrel 1, the control valve 152 on the drain pipe 151 can be opened to drain the moisture.

[0038] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0039] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A gas drying and dehydration device for a gas analyzer, characterized in that, include: The inner barrel (1) is detachably provided with a mesh plate (2), which divides the inner cavity of the inner barrel (1) into an upper cavity (11) and a lower cavity (12). The lower cavity (12) is provided with a filter module (3) that can block impurities. The lower cavity (12) is also provided with an air inlet pipe (13) located below the filter module (3). The upper cavity (11) is provided with an adsorbent (4) for adsorbing moisture. An outer tub (5) is fitted outside the inner tub (1) and forms a flow channel (51) between the outer tub (5) and the inner tub (1). The bottom end of the outer tub (5) is provided with a cold air inlet (52), and the flow channel (51) is connected to the refrigerator through the cold air inlet (52). The top end of the outer tub (5) is provided with a cold air outlet (53). The cover (6) is placed on the outer barrel (5) and is provided with an air outlet pipe (61).

2. The gas drying and dehydration device for a gas analyzer according to claim 1, characterized in that, The filter module (3) is detachably disposed in the lower cavity (12). The filter module (3) includes a first filter layer (31) and a second filter layer (32) located above the first filter layer (31).

3. The gas drying and dehydration device for a gas analyzer according to claim 2, characterized in that, At least two L-shaped plug-in blocks (121) are evenly arranged circumferentially on the side wall of the lower cavity (12). The first filter layer (31) and the second filter layer (32) are each provided with a plug hole (311) corresponding to the L-shaped plug-in block (121). The first filter layer (31) and the second filter layer (32) are sequentially plugged into the corresponding L-shaped plug-in block (121) through the plug hole (311).

4. The gas drying and dehydration device for a gas analyzer according to claim 2, characterized in that, The first filter layer (31) is constructed as a metal sintered mesh layer; the second filter layer (32) is constructed as a polytetrafluoroethylene membrane layer.

5. The gas drying and dehydration device for a gas analyzer according to any one of claims 1 to 4, characterized in that, The outer wall of the inner barrel (1) is provided with a spiral blade (14), which extends from the bottom to the top of the inner barrel (1). The spiral blade (14), the inner barrel (1), and the outer barrel (5) enclose the flow channel (51). The cold air inlet (52) and the cold air outlet (53) are both connected to the flow channel (51).

6. The gas drying and dehydration device for a gas analyzer according to claim 5, characterized in that, The width of the flow channel (51) gradually narrows from bottom to top.

7. The gas drying and dehydration device for a gas analyzer according to claim 5, characterized in that, The bottom of the inner barrel (1) is provided with a seat (15), the upper end of the seat (15) is provided with an annular flange, the annular flange is provided with an external thread, the lower end of the outer barrel (5) is provided with an internal thread that mates with the external thread, the air inlet pipe (13) passes through the annular flange and communicates with the outside, the bottom of the seat (15) is provided with a drain pipe (151), one end of the drain pipe (151) is located inside the inner barrel (1), and the other end extends to the outside of the seat (15), wherein the drain pipe (151) is provided with a control valve (152).

8. The gas drying and dehydration device for a gas analyzer according to claim 7, characterized in that, The bottom of the seat (15) is provided with multiple legs (7).

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