Pure steam preparation system, pure steam sampling device and working method thereof

Abstract

The present invention relates to a pure steam preparation system, a pure steam sampling device and a working method thereof. The pure steam sampling device includes a sampling tube, a shell, a heat exchange component, a partition, a sampling tube, a first switch valve and a first discharge pipe. During the sampling and detection step, pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube. At the same time, a cold medium enters the heat exchange chamber through the first joint, exchanges heat with the pure steam inside the heat exchange tube, and is discharged outward through the second joint. After the pure steam is cooled and condensed, it enters the interior of the separation chamber, where gas-liquid separation is performed. Uncondensed steam and non-condensable gas are discharged outward through the first discharge pipe. Condensed water enters the interior of the storage chamber through the through hole, and is then transported outward to the condensed water sampling device through the sampling tube. In this way, the heat exchange component can achieve pure steam cooling and condensation, and the separation chamber can achieve complete gas-liquid separation, which is beneficial to the stability of the condensed water detection result.

Description

Technical Field

[0001] The present invention relates to the technical field of pure steam preparation, and in particular to a pure steam preparation system, a pure steam sampling device and a working method thereof. Background Art

[0002] Pure steam is widely used as a disinfection and sterilization medium in the pharmaceutical industry. It plays a role in sterilization processes such as raw material preparation, liquid mixing, and finished product preparation. Pure steam is produced by pure steam generators and delivered by pure steam distribution systems. The quality of pure steam impacts the quality and safety of products in downstream processes. Therefore, ensuring pure steam quality during preparation and delivery is crucial. Pure steam quality testing is commonly performed using both online and offline methods. The stability of the sampling device is closely linked to pure steam quality testing. However, traditional pure steam sampling devices have diverse structures and lack unified standards, resulting in poor stability in sampling and test results. Summary of the Invention

[0003] Based on this, it is necessary to overcome the defects of the existing technology and provide a pure steam preparation system, a pure steam sampling device and a working method thereof, which can improve the stability of the sampling detection results.

[0004] The technical solution is as follows: a pure steam sampling device, the pure steam sampling device comprising:

[0005] A sampling tube and the housing, wherein the sampling tube is communicated with the top of the housing;

[0006] A heat exchange assembly is arranged inside the shell, and the heat exchange assembly includes two tube sheets arranged at intervals on the inner wall of the shell, a plurality of heat exchange tubes arranged between the two tube sheets, and a first joint and a second joint arranged on the shell, one end of the heat exchange tube passes through and is arranged on one of the tube sheets, and the other end of the heat exchange tube passes through and is arranged on the other tube sheet, the two tube sheets and the inner wall of the shell are enclosed to form a heat exchange chamber, and the first joint and the second joint are both connected to the heat exchange chamber; a partition, the partition It is arranged on the inner wall of the shell and is spaced apart from the tube plate at the bottom. The partition, the tube plate at the bottom and the inner wall of the shell form a separation chamber. The partition also forms a storage chamber with the bottom wall of the shell. A through hole is provided on the partition, and the separation chamber is connected with the storage chamber through the through hole; a sampling tube, a first switch valve and a first discharge tube, the sampling tube is connected to the bottom of the storage chamber, the first switch valve is arranged on the sampling tube, and the first discharge tube is connected to the top of the separation chamber.

[0007] When the above-mentioned pure steam sampling device performs the pure steam sampling and detection step, the first switch valve is opened, and pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube. At the same time, the cold medium enters the heat exchange chamber through the first joint, exchanges heat with the pure steam inside the heat exchange tube, and is discharged to the outside through the second joint. After cooling and condensing, the pure steam enters the interior of the separation chamber, where gas-liquid separation is performed. Uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and condensed water enters the interior of the storage chamber through the through hole, and is then transported to the condensate sampling device through the sampling tube. It can be seen that the set heat exchange component can achieve pure steam cooling and condensation, and the set separation chamber can achieve complete gas-liquid separation, which is conducive to the stability of the condensate detection results.

[0008] In one embodiment, a throttling orifice plate and a needle valve are sequentially connected in series on the sample inlet tube.

[0009] In one embodiment, the pure steam sampling device further includes a steam distribution plate, which is disposed inside the shell and connected to the inner wall of the shell. The steam distribution plate is located above the heat exchange component.

[0010] In one embodiment, the pure steam sampling device further includes a flow guide tube disposed inside the storage chamber, one end of the flow guide tube is communicated with the through hole, and the other end of the flow guide tube extends to the bottom of the storage chamber.

[0011] In one embodiment, the pure steam sampling device further includes a conductivity meter, and the conductivity meter is disposed at the bottom of the storage chamber.

[0012] In one embodiment, the pure steam sampling device further includes a second discharge pipe, which is connected to the top of the storage chamber.

[0013] In one embodiment, the pure steam sampling device further includes a discharge main pipe, and the first discharge pipe and the second discharge pipe are both connected to the discharge main pipe; the pure steam sampling device further includes a check valve, and the check valve is arranged in series on the discharge main pipe.

[0014] In one embodiment, the pure steam sampling device further includes a second on-off valve, which is provided on the first discharge pipe and is used to control the on-off of the first discharge pipe.

[0015] A pure steam preparation system comprises the pure steam sampling device and a pure steam generator, wherein the pure steam generator is connected to the sampling tube.

[0016] When the above-mentioned pure steam preparation system performs the pure steam sampling and detection step, the first switch valve is opened, and the pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube. At the same time, the cold medium enters the heat exchange chamber through the first joint, exchanges heat with the pure steam inside the heat exchange tube, and is discharged to the outside through the second joint. After the pure steam is cooled and condensed, it enters the interior of the separation chamber, where gas-liquid separation is performed. Uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and condensed water enters the interior of the storage chamber through the through hole, and is then transported to the condensate sampling device through the sampling tube. It can be seen that the set heat exchange component can realize the cooling and condensation of pure steam, and the set separation chamber can realize complete gas-liquid separation, which is conducive to the stability of the condensate detection result.

[0017] A working method of the pure steam sampling device, the working method of the pure steam sampling device comprising:

[0018] The sampling and detection steps of pure steam are as follows: the first switch valve is opened, and pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube. At the same time, the cold medium enters the heat exchange chamber through the first joint, exchanges heat with the pure steam inside the heat exchange tube, and is then discharged to the outside through the second joint; the pure steam is cooled and condensed by the heat exchange component and enters the interior of the separation chamber, and gas-liquid separation is performed in the separation chamber; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and the condensed water enters the interior of the storage chamber through the through hole, and is then transported to the condensed water sampling device through the sampling tube.

[0019] The working method of the above-mentioned pure steam sampling device is that the heat exchange component provided can realize the cooling and condensation of pure steam, and the separation chamber provided can realize the complete separation of gas and liquid, which is beneficial to the stability of the detection results of condensed water.

[0020] In one embodiment, the working method of the pure steam sampling device also includes a condensate preparation step, closing the first switch valve and opening the second switch valve; pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube, and at the same time, the cold medium enters the heat exchange chamber through the first joint and exchanges heat with the pure steam inside the heat exchange tube and is discharged to the outside through the second joint; the pure steam enters the interior of the separation chamber after being cooled and condensed by the heat exchange component, and gas-liquid separation is performed in the separation chamber; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and the condensed water enters the interior of the storage chamber through the through hole, and is then discharged to the outside through the second discharge pipe.

[0021] In one embodiment, the working method of the pure steam sampling device further includes: a pure steam purging step, in which the first switch valve is closed and the second switch valve is closed during the startup phase of the pure steam generator; pure steam enters the interior of the shell through the sampling tube and enters each of the heat exchange tubes; pure steam enters the interior of the separation chamber after passing through the heat exchange component, enters the interior of the storage chamber through the guide tube, and is then discharged to the outside through the second discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic structural diagram of a pure steam sampling device according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic structural diagram of a pure steam sampling device according to another embodiment of the present invention;

[0026] Figure 3 This is a schematic structural diagram of a pure steam sampling device according to another embodiment of the present invention;

[0027] Figure 4 This is a schematic structural diagram of a pure steam sampling device according to another embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a pure steam sampling device according to a specific embodiment of the present invention.

[0029] 10. Inlet tube; 11. Orifice plate; 12. Needle valve; 20. Housing; 21. First joint; 22. Second joint; 30. Heat exchange assembly; 31. Tube sheet; 32. Heat exchange tube; 33. Heat exchange chamber; 40. Partition; 41. Separation chamber; 42. Storage chamber; 43. Through hole; 44. Flow guide tube; 50. Sampling tube; 51. First on-off valve; 60. First discharge pipe; 61. Second on-off valve; 70. Steam distribution plate; 80. Conductivity meter; 91. Second discharge pipe; 92. Discharge main pipe; 93. Check valve. DETAILED DESCRIPTION

[0030] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] See Figure 1 , Figure 1 A schematic structural diagram of a pure steam sampling device according to one embodiment of the present invention is shown. One embodiment of the present invention provides a pure steam sampling device comprising: a sampling tube 10, a housing 20, a heat exchange assembly 30, a partition 40, a sampling tube 50, a first on-off valve 51, and a first discharge pipe 60. The sampling tube 10 is connected to the top of the housing 20. The heat exchange assembly 30 is disposed within the housing 20 and includes two tube sheets 31 spaced apart on the inner wall of the housing 20, a plurality of heat exchange tubes 32 disposed between the two tube sheets 31, and a first joint 21 and a second joint 22 disposed on the housing 20. One end of the heat exchange tube 32 extends through and is disposed on one of the tube sheets 31, while the other end of the heat exchange tube 32 extends through and is disposed on the other tube sheet 31. The two tube sheets 31 and the inner wall of the housing 20 enclose a heat exchange chamber 33. Both the first joint 21 and the second joint 22 are connected to the heat exchange chamber 33. A partition 40 is disposed on the inner wall of the housing 20 and spaced apart from the tube sheet 31 at the bottom. The partition 40, the tube sheet 31 at the bottom, and the inner wall of the housing 20 enclose a separation chamber 41. The partition 40 also encloses a storage chamber 42 with the bottom wall of the housing 20. A through hole 43 is provided in the partition 40. The separation chamber 41 communicates with the storage chamber 42 through the through hole 43. A sampling tube 50 is connected to the bottom of the storage chamber 42. A first on-off valve 51 is disposed on the sampling tube 50, and a first discharge pipe 60 is connected to the top of the separation chamber 41.

[0032] It should be noted that the pure steam sampling device in this embodiment can be used in a pure steam preparation system for online real-time sampling and detection of pure steam, and can also be used at a pure steam distribution and use point for offline sampling and detection of pure steam.

[0033] When the above-mentioned pure steam sampling device performs the pure steam sampling and detection step, the first on-off valve 51 is opened, and pure steam enters the interior of the housing 20 through the sampling tube 10 and enters each heat exchange tube 32. At the same time, the cold medium enters the heat exchange chamber 33 through the first joint 21, exchanges heat with the pure steam inside the heat exchange tube 32, and is discharged outward through the second joint 22. After cooling and condensing, the pure steam enters the interior of the separation chamber 41, where gas-liquid separation occurs. Uncondensed steam and non-condensable gas are discharged outward through the first discharge pipe 60, and condensed water enters the interior of the storage chamber 42 through the through hole 43, and is then transported outward to the condensed water sampling device through the sampling tube 50. It can be seen that the provided heat exchange assembly 30 can achieve pure steam cooling and condensation, and the provided separation chamber 41 can achieve complete gas-liquid separation, which is conducive to the stability of the condensed water detection results.

[0034] It should be noted that to ensure the cleanliness of the condensed water and prevent contamination, the first on-off valve 51 is a sterile diaphragm valve. Furthermore, the heat exchange assembly 30 is a sanitary heat exchange assembly. The structure formed by the heat exchange assembly 30 and the housing 20 is equivalent to a heat exchanger.

[0035] See also Figure 2 , Figure 2 Relative to Figure 1 For example, a throttle orifice 11 and a needle valve 12 are added to the sampling tube 10. In one embodiment, the throttle orifice 11 and the needle valve 12 are sequentially connected in series on the sampling tube 10. As pure steam flows into the sampling tube 10, the throttle orifice 11 and the needle valve 12 effectively ensure the stability of the incoming steam volume, preventing heat exchange fluctuations from affecting the sampling results.

[0036] See also Figure 1 or Figure 2 In one embodiment, the pure steam sampling device further includes a steam distribution tray 70. The steam distribution tray 70 is disposed within the housing 20, connected to the inner wall of the housing 20, and positioned above the heat exchange assembly 30. Thus, after pure steam enters the housing 20 through the sampling tube 10, it is evenly distributed by the steam distribution tray 70 before entering each heat exchange tube 32. This ensures effective heat exchange and better condensation of the pure steam.

[0037] See also Figure 1 or Figure 2In one embodiment, the pure steam sampling device further includes a guide tube 44 disposed inside the storage chamber 42. One end of the guide tube 44 is connected to the through hole 43, and the other end of the guide tube 44 extends to the bottom of the storage chamber 42. In this way, the condensed water generated in the separation chamber 41 enters the interior of the storage chamber 42 under the guiding action of the guide tube 44. In addition, since the guide tube 44 guides the condensed water to the bottom of the storage chamber 42, on the one hand, during the sampling process, the generated condensed water is promptly discharged to the outside through the sampling tube 50, which can ensure the immediacy of sampling, reduce the contact time between the sampling vessel and the outside world, and effectively ensure the accuracy of the sampling results; on the other hand, in the condensed water preparation step, the generated condensed water is passed into the bottom of the storage chamber 42, and the condensed water at the top of the storage chamber 42 is discharged to the outside through the second discharge pipe 91, so that the condensed water in the storage chamber 42 is in a living water state.

[0038] See also Figures 3 to 5 , Figures 3 to 5 Three different structural schematic diagrams of pure steam sampling devices are shown. In one embodiment, the pure steam sampling device further includes a conductivity meter 80. The conductivity meter 80 is located at the bottom of the storage chamber 42. This allows the conductivity meter 80 to measure the condensate's conductivity in real time, thus preventing lags in sampled values.

[0039] See also Figure 3 or Figure 4 In one embodiment, the pure steam sampling device further includes a second discharge pipe 91. The second discharge pipe 91 is connected to the top of the storage chamber 42. Specifically, the pure steam sampling device further includes a second on-off valve 61. The second on-off valve 61 is disposed on the first discharge pipe 60 and is used to control the opening and closing of the first discharge pipe 60. Thus, the operating method of the pure steam sampling device further includes a condensate preparation step and a pure steam purge step. In the condensate preparation step, the first on-off valve 51 needs to be closed and the second on-off valve 61 opened. Condensate in the storage chamber 42 reaches the top of the storage chamber 42 and overflows into the second discharge pipe 91, where it is then discharged externally through the second discharge pipe 91. In the pure steam purge step, the first on-off valve 51 and the second on-off valve 61 need to be closed. Pure steam is purged and sterilized as it flows through the sampling tube 10, the orifice plate 11, the needle valve 12, the steam distribution plate 70, the heat exchange tube 32, the separation chamber 41, the flow guide tube 44, and the storage chamber 42. Furthermore, after the above-mentioned pure steam sampling device is installed in the pure steam preparation system, it can be selected to enter the pure steam purging step, condensate preparation step and pure steam sampling and detection step according to actual needs, thereby achieving continuous operation.

[0040] It should be noted that, similar to the first switch valve 51, the second switch valve 61 is specifically a sterile diaphragm valve. Of course, the first switch valve 51 and the second switch valve 61 can also be set as other types of sanitary valves according to actual needs, which is not limited here.

[0041] It should be noted that the sampling tube 50 can be a part of the first on-off valve 51, that is, the sampling tube 50 can be integrally molded with the other parts of the first on-off valve 51. Alternatively, the sampling tube 50 can be a separate component that is separable from the other parts of the first on-off valve 51, that is, the sampling tube 50 can be manufactured independently and then integrated with the other parts of the first on-off valve 51. In one embodiment, the sampling tube 50 is an integrally molded part of the first on-off valve 51.

[0042] It should be noted that the first discharge pipe 60 can be a part of the second on-off valve 61 , that is, the first discharge pipe 60 can be integrally molded with the rest of the second on-off valve 61 . Alternatively, the first discharge pipe 60 can be a separate component that is separable from the rest of the second on-off valve 61 , that is, the first discharge pipe 60 can be manufactured independently and then integrated with the rest of the second on-off valve 61 . In one embodiment, the first discharge pipe 60 is an integrally molded part of the second on-off valve 61 .

[0043] See also Figure 5 In one embodiment, the pure steam sampling device further includes a discharge main pipe 92. The first discharge pipe 60 and the second discharge pipe 91 are both connected to the discharge main pipe 92.

[0044] See also Figure 5 In one embodiment, the pure steam sampling device further includes a check valve 93. This check valve 93 is installed in series with the discharge manifold 92. This allows condensate to flow in one direction through the discharge manifold 92, ensuring the cleanliness and sealing of the pure steam preparation system. When the check valve is open, static pressure is used to continuously drain water, ensuring continuous and stable discharge.

[0045] See also Figure 5 In one embodiment, a pure steam preparation system includes a pure steam sampling device according to any of the above embodiments, and further includes a pure steam generator (not shown in the figure), which is connected to the sampling tube 10.

[0046] When the above-mentioned pure steam preparation system performs the pure steam sampling and detection step, the first on-off valve 51 is opened, and pure steam enters the interior of the housing 20 through the sampling tube 10 and enters each heat exchange tube 32. At the same time, the cold medium enters the heat exchange chamber 33 through the first joint 21, exchanges heat with the pure steam inside the heat exchange tube 32, and is discharged outward through the second joint 22. After cooling and condensing, the pure steam enters the interior of the separation chamber 41, where gas-liquid separation occurs. Uncondensed steam and non-condensable gas are discharged outward through the first discharge pipe 60, and condensed water enters the interior of the storage chamber 42 through the through hole 43, and is then transported outward to the condensate sampling device through the sampling tube 50. It can be seen that the provided heat exchange assembly 30 can achieve pure steam cooling and condensation, and the provided separation chamber 41 can achieve complete gas-liquid separation, which is conducive to the stability of the condensate detection results.

[0047] See also Figures 1 to 5 Any one of the above embodiments, in one embodiment, a working method of the pure steam sampling device of any one of the above embodiments, the working method of the pure steam sampling device includes:

[0048] In the sampling and detection step of pure steam, the first switch valve 51 is opened; specifically, when a first discharge pipe 60 and a second switch valve 61 are provided, the second switch valve 61 is also opened synchronously; pure steam enters the interior of the shell 20 through the sampling pipe 10 and enters each heat exchange tube 32. At the same time, the cold medium enters the heat exchange chamber 33 through the first joint 21, exchanges heat with the pure steam inside the heat exchange tube 32, and is then discharged to the outside through the second joint 22; the pure steam is cooled and condensed by the heat exchange component 30 and enters the interior of the separation chamber 41, and gas-liquid separation is performed in the separation chamber 41; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe 60, and the condensed water enters the interior of the storage chamber 42 through the through hole 43, and is then transported to the condensed water sampling device through the sampling pipe 50.

[0049] The working method of the above-mentioned pure steam sampling device is that the heat exchange component 30 provided can realize the cooling and condensation of pure steam, and the separation chamber 41 provided can realize the complete separation of gas and liquid, which is beneficial to the stability of the detection result of condensed water.

[0050] See also Figure 5In one embodiment, the working method of the pure steam sampling device also includes a condensed water preparation step, closing the first switch valve 51 and opening the second switch valve 61; pure steam enters the interior of the shell 20 through the sampling tube 10, and enters each heat exchange tube 32, and at the same time, the cold medium enters the heat exchange chamber 33 through the first joint 21 to exchange heat with the pure steam inside the heat exchange tube 32 and is discharged to the outside through the second joint 22; the pure steam is cooled and condensed by the heat exchange component 30 and enters the interior of the separation chamber 41, and gas-liquid separation is performed in the separation chamber 41; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe 60, and the condensed water enters the interior of the storage chamber 42 through the through hole 43, and is then discharged to the outside through the second discharge pipe 91.

[0051] See also Figure 5 In one embodiment, the working method of the pure steam sampling device further includes a pure steam purging step. During the startup phase of the pure steam generator, the first switch valve 51 is closed, and the second switch valve 61 is closed; the pure steam enters the interior of the housing 20 through the sampling tube 10 and enters each heat exchange tube 32; the pure steam enters the interior of the separation chamber 41 after passing through the heat exchange component 30, enters the interior of the storage chamber 42 through the guide tube 44, and is then discharged to the outside through the second discharge pipe 91.

[0052] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, 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.

[0053] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0056] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A pure steam sampling device, characterized in that: The pure steam sampling device comprises: A sampling tube and the housing, wherein the sampling tube is communicated with the top of the housing; a heat exchange assembly disposed inside the shell, comprising two tube sheets spaced apart on the inner wall of the shell, a plurality of heat exchange tubes disposed between the two tube sheets, and a first joint and a second joint disposed on the shell, one end of the heat exchange tube passing through and disposed on one of the tube sheets, and the other end of the heat exchange tube passing through and disposed on the other tube sheet, the two tube sheets and the inner wall of the shell enclosing a heat exchange chamber, the first joint and the second joint both being in communication with the heat exchange chamber; a partition, the partition being arranged on the inner wall of the shell and spaced apart from the tube sheet at the bottom; the partition, the tube sheet at the bottom, and the inner wall of the shell enclosing a separation chamber; pure steam, after being cooled and condensed by the heat exchange component, enters the interior of the separation chamber, and undergoes gas-liquid separation in the separation chamber; the partition also encloses the bottom wall of the shell to form a storage chamber; the partition is provided with a through hole, and the separation chamber is communicated with the storage chamber through the through hole; a sampling tube, a first switch valve, and a first discharge tube, wherein the sampling tube is connected to the bottom of the storage chamber, the first switch valve is arranged on the sampling tube, and the first discharge tube is connected to the top of the separation chamber; a flow guide pipe, the flow guide pipe being disposed inside the storage chamber, one end of the flow guide pipe being communicated with the through hole, and the other end of the flow guide pipe extending to the bottom of the storage chamber; and A second discharge pipe is communicated with the top of the storage chamber.

2. The pure steam sampling device according to claim 1, characterized in that: The injection tube is sequentially provided with a throttling orifice plate and a needle valve in series.

3. The pure steam sampling device according to claim 1, characterized in that: The pure steam sampling device further comprises a steam distribution plate, which is arranged inside the shell and connected to the inner wall of the shell. The steam distribution plate is located above the heat exchange component.

4. The pure steam sampling device according to claim 1, characterized in that: The first switch valve is a sterile diaphragm valve.

5. The pure steam sampling device according to claim 1, characterized in that: The pure steam sampling device further includes a conductivity meter, which is arranged at the bottom of the storage chamber.

6. The pure steam sampling device according to claim 1, characterized in that: The heat exchange component is a sanitary heat exchange component.

7. The pure steam sampling device according to claim 1, characterized in that: The pure steam sampling device further includes a discharge main pipe, and the first discharge pipe and the second discharge pipe are both connected to the discharge main pipe; the pure steam sampling device further includes a check valve, and the check valve is arranged in series on the discharge main pipe.

8. The pure steam sampling device according to claim 7, characterized in that: The pure steam sampling device further includes a second on-off valve, which is disposed on the first discharge pipe and is used to control the on-off of the first discharge pipe.

9. A pure steam preparation system, characterized in that: The pure steam preparation system includes the pure steam sampling device according to any one of claims 1 to 8, and further includes a pure steam generator, wherein the pure steam generator is connected to the sampling tube.

10. A method for operating the pure steam sampling device according to any one of claims 1 to 8, characterized in that: The working method of the pure steam sampling device comprises: The sampling and detection steps of pure steam are as follows: the first switch valve is opened, and pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube. At the same time, the cold medium enters the heat exchange chamber through the first joint, exchanges heat with the pure steam inside the heat exchange tube, and is then discharged to the outside through the second joint; the pure steam is cooled and condensed by the heat exchange component and enters the interior of the separation chamber, and gas-liquid separation is performed in the separation chamber; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and the condensed water enters the interior of the storage chamber through the through hole, and is then transported to the condensed water sampling device through the sampling tube.

11. The working method of the pure steam sampling device according to claim 10, characterized in that: The working method of the pure steam sampling device also includes: Condensed water preparation step, closing the first switch valve and opening the second switch valve; pure steam enters the interior of the shell through the sampling tube and enters each heat exchange tube, and at the same time, the cold medium enters the heat exchange chamber through the first joint to exchange heat with the pure steam inside the heat exchange tube and is discharged to the outside through the second joint; the pure steam is cooled and condensed by the heat exchange component and enters the interior of the separation chamber, and gas-liquid separation is performed in the separation chamber; uncondensed steam and non-condensable gas are discharged to the outside through the first discharge pipe, and the condensed water enters the interior of the storage chamber through the through hole, and is then discharged to the outside through the second discharge pipe.

12. The working method of the pure steam sampling device according to claim 10, characterized in that: The working method of the pure steam sampling device also includes: In the pure steam purging step, during the startup phase of the pure steam generator, the first switch valve is closed, and the second switch valve is closed; pure steam enters the interior of the shell through the sampling tube and enters each of the heat exchange tubes; after passing through the heat exchange component, the pure steam enters the interior of the separation chamber, enters the interior of the storage chamber through the guide pipe, and is then discharged to the outside through the second discharge pipe.

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