Flow check device

Abstract

The application relates to a flow calibration device, a condensing structure is used for cooling and condensing steam, a flow guide pipe penetrates through the condensing structure and is used for introducing steam into the inside of the condensing structure, a collecting cup is located on the side of the condensing structure facing the gravity direction and is used for storing and measuring water droplets after condensation, wherein the condensing structure comprises a first condensing cover and a second condensing cover, the second condensing cover is sleeved in the inside of the first condensing cover, a condensing space is formed between the inner wall of the first condensing cover and the outer wall of the second condensing cover, the output end of the flow guide pipe is provided with a ring pipe, and a plurality of flow guide arms located in the condensing space are arranged on the ring pipe in an interval mode. Through the cooperation of the first condensing cover and the second condensing cover, compared with a traditional cooling mode, the temperature can be more accurately controlled, and the steam can be quickly condensed. The first and second air injection grooves of the flow guide arm allow the steam to be directionally injected to the first condensing cover and the second condensing cover, wall hanging residues or secondary evaporation are avoided, and the measurement accuracy is further improved.

Description

Technical Field

[0001] This application relates to the field of steam detection technology, and in particular to a flow rate verification device. Background Technology

[0002] In the tobacco processing stage, steam, as the core heat medium and process medium, runs through many key steps from leaf pretreatment to finished tobacco processing. Especially in the drying, heating and humidification, and feeding processes, precise control of steam flow directly determines the physical properties and sensory quality of the tobacco. Its parameter stability can even affect the combustibility and smoking experience of subsequent cigarettes. Furthermore, besides the aforementioned core processes, steam flow also plays a crucial role in the "leaf loosening" process before slicing and the "cooling and rehydration" process of the finished tobacco. For example, the leaf loosening process requires softening clumped leaves with low-flow steam; if the flow is out of control, the leaves will become overly wet or dry, directly affecting the slicing precision. Therefore, precise control of steam flow is not only a quality assurance measure for a single process but also a core technological requirement throughout the entire tobacco processing workflow.

[0003] Steam flow calibration methods are mainly divided into two categories: offline calibration and online calibration. The core is to judge the accuracy of the flow meter measurement value by comparing it with the standard flow signal. Different methods are suitable for different needs in scenarios such as tobacco processing, such as whether the machine is shut down or not, and the accuracy requirements. Utility Model Content

[0004] Therefore, it is necessary to provide a flow verification device to address the problems that the traditional operation process for steam flow is time-consuming, labor-intensive, and has a low degree of automation, making it impossible for a single person to operate.

[0005] According to one aspect of this application, a flow rate calibration device is provided for steam, which condenses into liquid water droplets, comprising: a condensation structure for cooling and condensing the steam; a guide tube penetrating the condensation structure for introducing the steam into the interior of the condensation structure; and a collection cup located on the side of the condensation structure facing the direction of gravity for collecting and measuring the condensed water droplets.

[0006] The condensation structure includes a first condensation shroud and a second condensation shroud, with the second condensation shroud fitted inside the first condensation shroud; a condensation space is formed between the inner wall of the first condensation shroud and the outer wall of the second condensation shroud; an annular pipe is provided at the output end of the guide pipe, and multiple guide arms located within the condensation space are provided on the annular pipe, with the multiple guide arms arranged at intervals along the circumference of the annular pipe.

[0007] In one embodiment, the condensation structure further includes a flow guide shroud located below the first condensation shroud. The flow guide shroud is provided with a mounting base on the side facing the direction of gravity. The flow guide shroud has a flow guide hole located inside the mounting base. The collection cup is detachably mounted on the mounting base.

[0008] In one embodiment, a first magnetic sheet is mounted on the mounting base, and a mounting protrusion is provided on the side of the collecting cup facing the mounting base. A second magnetic sheet is provided on the mounting protrusion for attracting the first magnetic sheet, and the collecting cup is detachably mounted on the mounting base via the second magnetic sheet.

[0009] In one embodiment, a first condenser tube is provided on the first condenser shroud, and a second condenser tube is provided on the second condenser shroud, the second condenser tube being internally connected to the first condenser tube; a first pipe network connected to the first condenser tube is provided inside the first condenser shroud, and a second pipe network connected to the second condenser tube is provided inside the second condenser shroud.

[0010] In one embodiment, the guide arm has a first jet groove on the side facing the inner wall of the first condenser shroud, and the guide arm has a second jet groove on the side facing the outer wall of the second condenser shroud.

[0011] In one embodiment, a first guide groove is formed on the inner wall of the first condenser shroud, and the distance between the first guide groove and the opening of the guide shroud gradually decreases along the direction of gravity; a second guide groove is formed on the outer wall of the second condenser shroud, and the distance between the second guide groove and the opening of the guide shroud gradually decreases along the direction of gravity.

[0012] In one embodiment, the flow verification device further includes a support frame for supporting and positioning the condensation structure; a control panel is provided on the support frame.

[0013] In one embodiment, a flow meter is installed on the guide tube; the collection cup is made of transparent material and has scale lines on its outer wall; and a handle is provided on the collection cup.

[0014] In one embodiment, the flow verification device further includes a condensation device for generating condensed gas, and the output end of the condensation device is connected to the first condenser tube.

[0015] In one embodiment, the diameter of the opening of the flow guide shroud facing the first condenser shroud is not less than the diameter of the opening of the first condenser shroud facing the flow guide shroud.

[0016] This application has the following beneficial effects:

[0017] This application, through the coordinated use of the first and second condenser hoods, achieves more precise temperature control compared to traditional cooling methods, ensuring rapid steam condensation. The first and second jet channels of the guide arm direct steam towards the first and second condenser hoods, while the guide channels on the inner and outer walls guide water droplets to fall quickly, preventing residue buildup or secondary evaporation. Furthermore, the transparent material facilitates observation of the liquid level, and the magnetic adsorption positioning between the mounting base and the collection cup ensures complete flow of condensate into the collection cup, preventing leakage due to misalignment and further improving measurement accuracy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of an embodiment of this application.

[0020] Figure 3 This is a three-dimensional structural diagram of the guide tube in one embodiment of this application.

[0021] Figure 4 This is a three-dimensional structural diagram of the condensation structure in one embodiment of this application.

[0022] Figure 5 This is a three-dimensional structural diagram of the collection cup in one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Condensation structure; 101. First condenser shroud; 102. Flow guide shroud; 103. Second condenser shroud; 104. First condenser tube; 105. Second condenser tube; 106. First piping network; 107. Second piping network; 108. First flow guide channel; 109. Second flow guide channel; 110. Mounting base; 111. First magnetic plate; 112. Support frame; 113. Control panel;

[0025] 2. Guide pipe; 201. Flow meter; 202. Ring pipe; 203. Guide arm; 204. First jet duct; 205. Second jet duct;

[0026] 3. Collection cup; 301. Installation ring; 302. Second magnet; 303. Handle; 304. Scale line. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0033] See appendix Figure 1 - Appendix Figure 5 , Figure 1 The diagram shows an overall structural schematic of a flow calibration device according to an embodiment of this application. The device is used for steam, which condenses into liquid water droplets. It includes a condensation structure 1 for cooling and condensing the steam; a guide pipe 2 that penetrates the condensation structure 1 for introducing steam into the interior of the condensation structure 1; and a collection cup 3 located on the side of the condensation structure 1 facing the direction of gravity for storing and measuring the condensed water droplets.

[0034] The condensation structure 1 includes a first condensation shroud 101 and a second condensation shroud 103, with the second condensation shroud 103 fitted inside the first condensation shroud 101. A condensation space is formed between the inner wall of the first condensation shroud 101 and the outer wall of the second condensation shroud 103. The output end of the guide pipe 2 is provided with a ring pipe 202, and multiple guide arms 203 located in the condensation space are provided on the ring pipe 202. The multiple guide arms 203 are arranged at intervals along the circumference of the ring pipe 202.

[0035] The core of this steam flow calibration device is to convert steam into liquid water through the condensation structure 1, and then measure the water volume through the collection cup 3 to achieve flow calibration. The overall structure design revolves around efficient condensation and accurate collection. The first condenser hood 101 and the second condenser hood 103 form a closed condensation space, providing an environment for steam cooling and are the key areas for steam to turn into water droplets. The ring pipe 202, together with multiple guide arms 203, allows the steam to be evenly dispersed into the condensation space, improving condensation efficiency, and the collection cup 3 uses gravity to collect the condensed water droplets.

[0036] Multiple guide arms 203 on the ring pipe 202 simultaneously release steam, ensuring uniform distribution of steam within the condensation space and preventing insufficient condensation due to localized excessive steam density. The steam releases heat in the low-temperature condensation space, gradually transforming from a gaseous state into liquid water droplets. The condensed water droplets, influenced by gravity, naturally fall into the collection cup 3 located below the condensation structure 1. Finally, by measuring the volume of water in the collection cup 3, the steam flow rate is calculated in reverse and compared and verified with the value from the flow meter 201.

[0037] See appendix Figure 1 - Appendix Figure 2 The condensation structure 1 also includes a flow guide shroud 102 located below the first condensation shroud 101. A mounting base 110 is provided on the side of the flow guide shroud 102 facing the direction of gravity. A flow guide hole is provided on the flow guide shroud 102 located inside the mounting base 110. The collection cup 3 is detachably mounted on the mounting base 110.

[0038] In some embodiments, the flow guide shroud 102 is located below the first condenser shroud 101, corresponding to the water outlet component of the condenser structure 1. The collection cup 3 is detachably mounted on the mounting base 110 by magnetic adsorption or other means, and is used to collect and measure condensate.

[0039] After steam condenses into water droplets in the condensation space between the first condenser shroud 101 and the second condenser shroud 103, it flows downward along the first guide channel 108 and the second guide channel 109, eventually converging into the guide shroud 102. The guide shroud 102 guides all the condensate to the guide hole at its bottom, and then precisely drips into the collection cup 3 through the mounting base 110.

[0040] In some embodiments, the flow guide 102 has a funnel effect and is typically wider at the top and narrower at the bottom, ensuring that all condensate can be collected in the bottom flow guide hole, reducing wall-mounted losses.

[0041] See appendix Figure 2 and attached Figure 4 - Appendix Figure 5 A first magnetic sheet 111 is installed on the mounting base 110. A mounting protrusion 301 is provided on the side of the collecting cup 3 facing the mounting base 110. A second magnetic sheet 302 is provided on the mounting protrusion 301 for adsorption with the first magnetic sheet 111. The collecting cup 3 is detachably mounted on the mounting base 110 through the second magnetic sheet 302.

[0042] In some embodiments, the magnetic adsorption installation design enables quick and easy installation of the collection cup 3, while ensuring accurate positioning and sealing during installation, greatly improving the ease of operation and practicality of the device.

[0043] Compared to threaded or snap-fit ​​connections, magnetic adsorption eliminates the need for rotation or pressing. Simply align the mounting ring 301 of the collection cup 3 with the mounting base 110, and it will be secured by the magnetic attraction. It can be easily removed with a gentle lift. This significantly reduces operation time, especially in scenarios requiring frequent replacement or cleaning of the collection cup 3.

[0044] In some embodiments, the adsorption positions of the first magnetic piece 111 and the second magnetic piece 302 are fixed, ensuring that the collecting cup 3 is accurately aligned with the drain outlet of the condensing structure 1 each time it is installed, thus preventing condensate leakage due to installation misalignment. Simultaneously, the mounting ring 301 can also form a certain sealing fit with the mounting base 110, further reducing the risk of liquid leakage.

[0045] Align the mounting protrusion 301 of the collection cup 3 with the mounting base 110. The collection cup 3 is stably fixed to the mounting base 110 by the attraction between the second magnetic piece 302 and the first magnetic piece 111, ensuring that the opening of the collection cup 3 faces the drain end of the condensation structure 1. Water droplets condensed from steam fall along the guide shroud 102 and flow precisely into the collection cup 3. After measurement, lift the collection cup 3 upwards to overcome the magnetic attraction and remove it. The condensate can then be poured out or the collection cup 3 can be cleaned. After the operation is complete, it can be reattached.

[0046] See appendix Figure 2 A first condenser tube 104 is provided on the first condenser shroud 101, and a second condenser tube 105 is provided on the second condenser shroud 103. The second condenser tube 105 is internally connected to the first condenser tube 104. A first pipe network 106 connected to the first condenser tube 104 is provided inside the first condenser shroud 101, and a second pipe network 107 connected to the second condenser tube 105 is provided inside the second condenser shroud 103.

[0047] In some embodiments, the inner and outer walls of the condenser can be cooled directly through the first pipe network 106 and the second pipe network 107, which can control the condensation temperature more accurately and efficiently, and further improve the steam condensation efficiency and flow rate verification accuracy.

[0048] The first condenser tube 104 is the inlet for the condensing medium, which delivers the condensing medium to the first pipe network 106 inside the first condenser shroud 101. The first pipe network 106 is a network of pipes that fills the inner wall of the first condenser shroud 101, allowing the condensing medium to flow evenly, quickly remove heat, and keep the inner wall of the first condenser shroud 101 at a low temperature.

[0049] The second condenser tube 105 is internally connected to the first condenser tube 104, meaning that the condensing medium will simultaneously enter the second pipe network 107 inside the second condenser shroud 103. The second pipe network 107 also covers the outer wall of the second condenser shroud 103, forming a cooling structure with the first pipe network 106, allowing the temperature of the entire condensation space to drop rapidly and evenly.

[0050] See appendix Figure 2 - Appendix Figure 3 The guide arm 203 has a first jet groove 204 on the side facing the inner wall of the first condenser shroud 101, and a second jet groove 205 on the side facing the outer wall of the second condenser shroud 103.

[0051] In some embodiments, the first jet trough 204 and the second jet trough 205 are designed to allow steam to contact the condensation surfaces of the first condenser shroud 101 and the second condenser shroud 103 evenly and efficiently, thereby accelerating the condensation rate and ensuring complete liquefaction.

[0052] The first jet channel 204 injects steam directionally toward the inner wall of the first condenser shroud 101. After being ejected, the steam directly hits the inner wall of the first condenser shroud 101, shortening the contact time between the steam and the condensing surface and accelerating the condensation rate. Compared to a simple circular opening, the channel design can form a sheet-like airflow, allowing the steam to more evenly cover the condensing surface and increasing the contact area.

[0053] In some embodiments, directional injection reduces the disordered flow of steam in the condensation space and avoids uneven mixing of hot and cold gases.

[0054] In some embodiments, the second jet vent 205 directly impacts the outer wall of the second condenser shroud 103, achieving simultaneous condensation on both the inner and outer walls and significantly improving condensation efficiency. If the jet only targets one side, it would result in excessive condensation load on that side and low utilization on the other side; bidirectional jetting balances the condensation volume on both sides.

[0055] See appendix Figure 2 and attached Figure 4 A first guide groove 108 is provided on the inner wall of the first condenser shroud 101, and the distance between the first guide groove 108 and the opening of the guide shroud 102 gradually decreases along the direction of gravity; a second guide groove 109 is provided on the outer wall of the second condenser shroud 103, and the distance between the second guide groove 109 and the opening of the guide shroud 102 gradually decreases along the direction of gravity.

[0056] In some embodiments, the primary function of the first guide channel 108 and the second guide channel 109 is to efficiently guide the flow of condensate and prevent water droplets from accumulating, thereby ensuring measurement accuracy. The first guide channel 108 guides the condensate to flow rapidly down the inner wall. After the steam condenses into water droplets on the inner wall of the first condenser shroud 101, without the guide channel, the water droplets may drip randomly or stick to the wall, resulting in slow falling speed or even partial residue. The guide channel, like a drainage ditch, quickly guides the water droplets to the opening, where they fall into the guide shroud 102 and the collection cup 3 at the bottom.

[0057] In some embodiments, water droplets flow away quickly, reducing the time they remain on the surfaces of the first condenser shroud 101 and the second condenser shroud 103, thus reducing the possibility of re-evaporation.

[0058] In some embodiments, the second guide channel 109 also guides condensate, and condensate will also be generated on the outer wall of the second condensation shroud 103. The guide channel will also guide these water droplets to the lower opening. Complementing the first guide channel 108, the design of the inner and outer guide channels allows condensate to be collected efficiently from both directions, with almost no dead corners.

[0059] See appendix Figure 1 The flow calibration device also includes a support frame 112, which is used to support and position the condensation structure 1; a control panel 113 is provided on the support frame 112.

[0060] In some embodiments, the condensing structure 1 includes components such as a first condensing shroud 101 and a second condensing shroud 103, and has a certain weight and needs to be kept in a stable position. The support frame 112 provides a stable mounting base to ensure that the condensing structure 1 will not shake or shift during operation.

[0061] In some embodiments, a control panel 113 structure is designed to facilitate the operation of the equipment by the operator.

[0062] See appendix Figure 1 and attached Figure 5 A flow meter 201 is installed on the guide pipe 2; the collection cup 3 is made of transparent material and has scale lines 304 on its outer wall; and a handle 303 is provided on the collection cup 3.

[0063] In some embodiments, a flow meter 201 is installed on the guide pipe 2. Its function is to measure the steam flow rate data in real time before the steam enters the condensing structure 1, so as to obtain the steam flow rate value simultaneously during the condensation and collection process, which is convenient for subsequent comparison and verification.

[0064] The cumulative reading of the flow meter 201 over a certain period of time can be compared with the final water volume conversion value measured in the collection cup 3 to verify the condensation efficiency and measurement accuracy.

[0065] The condensate can be measured by measuring the volume of cooling water. Steam mass flow rate (kg / h) = condensate volume flow rate (cubic meters per hour) * 1000.

[0066] In some embodiments, a transparent material is used to allow operators to directly observe the level and collection status of the condensate without opening or disassembling it, and the scale line 304 can directly read the volume of the collected condensate.

[0067] This design reduces errors; compared to subsequent measurement using a graduated cylinder, direct reading minimizes liquid loss during transfer. After measurement, the operator removes the collection cup 3 using handle 303 for further processing or cleaning.

[0068] See appendix Figure 1 - Appendix Figure 4 The flow calibration device also includes a condensation device, which is used to generate condensed gas and whose output end is connected to the first condenser tube 104.

[0069] In some embodiments, the condensing equipment is the power source for cooling the condensing space. The condensing gas generated by the condensing equipment provides a continuous and stable low-temperature environment for steam condensation, which is a key link to ensure condensing efficiency and flow rate verification accuracy.

[0070] The low-temperature condensing gas generated by the condensing equipment is transported through pipes to the first condenser tube 104 and the second condenser tube 105, and finally enters the interior of the first condenser shroud 101 and the second condenser shroud 103. As the low-temperature condensing gas flows inside the first condenser shroud 101 and the second condenser shroud 103, it absorbs heat from the steam in the condensation space, causing the steam to cool rapidly and transform into liquid water droplets. Compared to natural cooling, this active delivery of condensing gas helps maintain a stable temperature in the condensation space, avoiding the problem of temperature rise and decreased condensation efficiency caused by continuous steam entry.

[0071] See appendix Figure 1 - Appendix Figure 2 The diameter of the opening of the flow guide 102 facing the first condenser 101 is not less than the diameter of the opening of the first condenser 101 facing the flow guide 102.

[0072] In some embodiments, during operation, the second condenser shroud 103 is fitted inside the first condenser shroud 101. In order to ensure that all water droplets fall into the lower guide shroud 102 and prevent water droplets from flowing outside the equipment, the diameter of the guide shroud 102 is greater than or equal to the diameter of the first condenser shroud 101.

[0073] In some embodiments, this design detail ensures that the condensed water droplets flow into the collection cup 3 without residue, preventing water droplet loss due to mismatched opening sizes, which could affect the accuracy of subsequent flow rate measurements. The larger opening is equivalent to adding a water-receiving funnel to the outlet of the first condenser shroud 101. Even if some water droplets deviate slightly from their falling trajectory, they can be caught by the large opening of the guide shroud 102, ensuring that all water droplets eventually flow into the collection cup 3 below.

[0074] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A flow rate calibration device for steam, wherein the steam condenses into liquid water droplets, characterized in that, The flow verification device includes: A condensing structure (1) is used to cool and condense the steam; A guide pipe (2) penetrates the condensation structure (1) and is used to introduce the steam into the interior of the condensation structure (1); The collecting cup (3) is located on the side of the condensing structure (1) facing the direction of gravity, and is used to collect and measure the condensed water droplets; The condensation structure (1) includes a first condensation shroud (101) and a second condensation shroud (103), with the second condensation shroud (103) fitted inside the first condensation shroud (101); a condensation space is formed between the inner wall of the first condensation shroud (101) and the outer wall of the second condensation shroud (103). The output end of the guide pipe (2) is provided with a ring pipe (202), and multiple guide arms (203) located in the condensation space are provided on the ring pipe (202). The multiple guide arms (203) are arranged at intervals along the circumference of the ring pipe (202).

2. The flow rate verification device according to claim 1, characterized in that, The condensation structure (1) also includes a flow guide (102) located below the first condensation cover (101), and the flow guide (102) is provided with a mounting base (110) on the side facing the direction of gravity. The flow guide shroud (102) has a flow guide hole located inside the mounting base (110), and the collection cup (3) is detachably mounted on the mounting base (110).

3. The flow rate verification device according to claim 2, characterized in that, A first magnetic sheet (111) is installed on the mounting base (110), and a mounting protrusion (301) is provided on the side of the collecting cup (3) facing the mounting base (110). A second magnetic sheet (302) for adsorbing the first magnetic sheet (111) is provided on the mounting protrusion (301). The collection cup (3) is detachably mounted on the mounting base (110) via the second magnet (302).

4. The flow rate verification device according to any one of claims 1-3, characterized in that, The first condenser shroud (101) is provided with a first condenser tube (104), and the second condenser shroud (103) is provided with a second condenser tube (105), the second condenser tube (105) being internally connected to the first condenser tube (104); The first condenser shroud (101) has a first pipe network (106) that communicates with the first condenser pipe (104) inside, and the second condenser shroud (103) has a second pipe network (107) that communicates with the second condenser pipe (105) inside.

5. The flow rate verification device according to any one of claims 1-3, characterized in that, The guide arm (203) has a first jet groove (204) on the side facing the inner wall of the first condenser shroud (101), and the guide arm (203) has a second jet groove (205) on the side facing the outer wall of the second condenser shroud (103).

6. The flow rate verification device according to claim 2, characterized in that, The first condenser shroud (101) has a first guide groove (108) on its inner wall, and the distance between the first guide groove (108) and the opening of the guide shroud (102) gradually decreases along the direction of gravity; the second condenser shroud (103) has a second guide groove (109) on its outer wall, and the distance between the second guide groove (109) and the opening of the guide shroud (102) gradually decreases along the direction of gravity.

7. The flow rate verification device according to any one of claims 1-3, characterized in that, The flow rate verification device also includes a support frame (112), which is used to support and position the condensation structure (1); The support frame (112) is equipped with a control panel (113).

8. The flow rate verification device according to any one of claims 1-3, characterized in that, A flow meter (201) is installed on the guide pipe (2); And / or, the collecting cup (3) is made of transparent material and has scale lines (304) on its outer wall. And / or, the collection cup (3) is provided with a handle (303).

9. The flow rate verification device according to claim 4, characterized in that, The flow rate verification device also includes a condensation device, which is used to generate condensed gas and whose output end is connected to the first condenser tube (104).

10. The flow rate verification device according to any one of claims 1-3, characterized in that, The diameter of the opening of the flow guide (102) facing the first condenser (101) is not less than the diameter of the opening of the first condenser (101) facing the flow guide (102).

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