CN216484263U

CN216484263U - Pure steam preparation system and pure steam sampling device

Info

Publication number: CN216484263U
Application number: CN202122043286.XU
Authority: CN
Inventors: 常季
Original assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Current assignee: Truking Watertown Pharmaceutical Equipment Co Ltd
Priority date: 2021-08-27
Filing date: 2021-08-27
Publication date: 2022-05-10
Anticipated expiration: 2031-08-27

Abstract

The utility model relates to a pure steam preparation system and a pure steam sampling device. During the sample detection step, pure steam enters into the inside of shell through advancing the appearance pipe, enter into each heat exchange tube, cold medium enters into the heat transfer cavity through first joint simultaneously, connect outside the discharge through the second after carrying out the heat transfer with the inside pure steam of heat exchange tube, the inside that enters into the separation cavity after the condensation of pure steam cooling, carry out gas-liquid separation in the separation cavity, steam and the noncondensable gas of not condensing pass through first exhaust pipe and outwards discharge, the comdenstion water enters into the inside of storing the cavity through the through-hole, then outwards carry the comdenstion water sampling device through the sampling tube in. So, the heat exchange assemblies who sets up can realize pure steam cooling condensation, and the separation cavity that sets up can realize the gas-liquid complete separation, can be favorable to the stability of the testing result of comdenstion water.

Description

Pure steam preparation system and pure steam sampling device

Technical Field

The utility model relates to the technical field of pure steam preparation, in particular to a pure steam preparation system and a pure steam sampling device.

Background

Pure steam is widely applied to the pharmaceutical industry as a disinfection and sterilization medium, and participates in sterilization work such as raw material preparation, liquid preparation, finished product preparation and the like in the pharmaceutical process, the pure steam is prepared by a pure steam generator, and a pure steam distribution system is responsible for conveying. The quality of the pure steam influences the quality safety of the product in the back-end process. Therefore, it is crucial to guarantee pure steam quality in preparation and transportation. The quality detection of pure steam generally adopts means such as on-line detection and off-line detection, and the stability of sampling device is closely related to the quality detection of pure steam. However, the conventional pure steam sampling device has various structures, does not have a unified established standard, and has poor stability of sampling detection results.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to overcome the defects of the prior art 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 result.

The technical scheme is as follows: a pure steam sampling device, the pure steam sampling device comprising:

the sampling tube is communicated with the top of the shell;

the heat exchange assembly is arranged in the shell and comprises two tube plates arranged on the inner wall of the shell at intervals, a plurality of heat exchange tubes arranged between the two tube plates, a first joint and a second joint which are arranged on the shell, one end of each heat exchange tube penetrates through and is arranged on one tube plate, the other end of each heat exchange tube penetrates through and is arranged on the other tube plate, the two tube plates and the inner wall of the shell are enclosed to form a heat exchange cavity, and the first joint and the second joint are both communicated with the heat exchange cavity; the partition plate is arranged on the inner wall of the shell and is arranged at intervals with the tube plate at the bottom, the partition plate, the tube plate at the bottom and the inner wall of the shell enclose to form a separation chamber, the partition plate and the bottom wall of the shell enclose to form a storage chamber, a through hole is formed in the partition plate, and the separation chamber is communicated with the storage chamber through the through hole; the sampling pipe, first ooff valve and first discharge tube, the sampling pipe with the bottom of storage chamber is linked together, first ooff valve set up in on the sampling pipe, first discharge tube with the top of separation chamber is linked together.

Foretell pure steam sampling device is when carrying out the sample detection step of pure steam, open first ooff valve, pure steam enters into the inside of shell through advancing the appearance pipe, enter into each heat exchange tube, cold medium enters into the heat transfer cavity through first joint simultaneously, connect outside the discharge through the second after carrying out the heat transfer with the inside pure steam of heat exchange tube, the inside of entering separation cavity behind the pure steam cooling condensation, carry out gas-liquid separation in the separation cavity, steam and the noncondensable gas of not condensing pass through first discharge tube and outwards discharge, the comdenstion water enters into the inside of storing the cavity through the through-hole, then outwards carry in the comdenstion water sampling device through the sampling tube. Therefore, the heat exchange assembly can realize pure steam cooling and condensation, and the separation chamber can realize complete gas-liquid separation, so that the stability of the detection result of condensed water can be facilitated.

In one embodiment, the sampling pipe is provided with a throttle orifice plate and a needle valve in series in sequence.

In one embodiment, the pure steam sampling device further comprises a steam distribution plate, the steam distribution plate is arranged in the shell and connected with the inner wall of the shell, and the steam distribution plate is positioned above the heat exchange component.

In one embodiment, the pure steam sampling device further comprises a flow guide pipe arranged inside the storage chamber, one end of the flow guide pipe is communicated with the through hole, and the other end of the flow guide pipe extends to the bottom of the storage chamber.

In one embodiment, the pure steam sampling device further comprises a conductivity meter disposed at the bottom of the storage chamber.

In one embodiment, the pure vapor sampling device further comprises a second drain tube in communication with the top of the storage chamber.

In one embodiment, the pure steam sampling device further comprises a discharge header pipe, and the first discharge pipe and the second discharge pipe are both communicated with the discharge header pipe.

In one embodiment, the pure vapor sampling device further comprises a check valve disposed in series on the discharge manifold.

In one embodiment, the pure steam sampling device further comprises a second switch valve, and the second switch valve is arranged on the first discharge pipe and is used for controlling the on-off of the first discharge pipe.

The utility model provides a pure steam preparation system, pure steam preparation system include pure steam sampling device, still include pure steam generator, pure steam generator with it is linked together to advance the appearance pipe.

Foretell pure steam preparation system is when carrying out the sample detection step of pure steam, open first ooff valve, pure steam enters into the inside of shell through the sampling pipe, enter into each heat exchange tube, cold medium enters into the heat transfer cavity through first joint simultaneously, connect outside the discharge through the second after carrying out the heat transfer with the inside pure steam of heat exchange tube, the inside of entering separation cavity after the condensation of pure steam cooling, carry out gas-liquid separation in the separation cavity, steam and the noncondensable gas of not condensing pass through first discharge tube and outwards discharge, the comdenstion water enters into the inside of storage cavity through the through-hole, then outwards carry in the comdenstion water sampling device through the sampling pipe. Therefore, the heat exchange assembly can realize pure steam cooling and condensation, and the separation chamber can realize complete gas-liquid separation, so that the stability of the detection result of condensed water can be facilitated.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a pure vapor sampling device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a pure vapor sampling device according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pure vapor sampling device according to another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a pure vapor sampling device according to yet another embodiment of the present invention;

fig. 5 is a schematic structural diagram of a pure vapor sampling device according to an embodiment of the present invention.

10. A sample inlet pipe; 11. a restriction orifice plate; 12. a needle valve; 20. a housing; 21. a first joint; 22. a second joint; 30. a heat exchange assembly; 31. a tube sheet; 32. a heat exchange pipe; 33. a heat exchange chamber; 40. a partition plate; 41. a separation chamber; 42. a storage chamber; 43. a through hole; 44. a flow guide pipe; 50. a sampling tube; 51. a first on-off valve; 60. a first discharge pipe; 61. a second on-off valve; 70. a steam distribution plate; 80. a conductivity meter; 91. a second discharge pipe; 92. a discharge header pipe; 93. a check valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1, fig. 1 shows a schematic structural diagram of a pure vapor sampling device according to an embodiment of the present invention. An embodiment of the present invention provides a pure steam sampling device, which includes: the sample inlet pipe 10, the shell 20, the heat exchange assembly 30, the partition plate 40, the sampling pipe 50, the first switch valve 51 and the first discharge pipe 60. The sampling tube 10 communicates with the top of the housing 20. The heat exchange assembly 30 is disposed inside the shell 20, and the heat exchange assembly 30 includes two tube plates 31 disposed on an inner wall of the shell 20 at intervals, a plurality of heat exchange tubes 32 disposed between the two tube plates 31, and a first joint 21 and a second joint 22 disposed on the shell 20. One end of the heat exchange tube 32 penetrates and is arranged on one tube plate 31, and the other end of the heat exchange tube 32 penetrates and is arranged on the other tube plate 31. The two tube sheets 31 enclose the inner wall of the shell 20 to form a heat exchange chamber 33. The first joint 21 and the second joint 22 are both in communication with the heat exchange chamber 33. The partition plate 40 is disposed on the inner wall of the shell 20 and spaced from the tube plate 31 at the bottom, the partition plate 40, the tube plate 31 at the bottom and the inner wall of the shell 20 enclose to form a separation chamber 41, and the partition plate 40 and the bottom wall of the shell 20 enclose to form a storage chamber 42. The partition 40 is provided with a through hole 43. The separation chamber 41 communicates with the reservoir chamber 42 through the through hole 43. The sampling tube 50 communicates with the bottom of the storage chamber 42. The first switching valve 51 is provided on the sampling pipe 50, and the first discharge pipe 60 communicates with the top of the separation chamber 41.

It should be noted that the pure steam sampling device in this embodiment may be applied to a pure steam preparation system for online real-time sampling and detecting pure steam, and may also be applied to a pure steam distribution use point for offline sampling and detecting pure steam.

When the pure steam sampling device performs a pure steam sampling detection step, the first switch valve 51 is opened, pure steam enters the inside of the shell 20 through the sampling pipe 10 and enters each heat exchange pipe 32, meanwhile, a cold medium enters the heat exchange chamber 33 through the first connector 21, exchanges heat with the pure steam inside the heat exchange pipe 32 and then is discharged outside through the second connector 22, the pure steam enters the inside of the separation chamber 41 after being cooled and condensed, gas-liquid separation is performed in the separation chamber 41, uncondensed steam and uncondensed gas are discharged outside through the first discharge pipe 60, condensed water enters the inside of the storage chamber 42 through the through hole 43, and then the condensed water is conveyed outside to the condensed water sampling device through the sampling pipe 50. Therefore, the arranged heat exchange assembly 30 can realize pure steam cooling and condensation, and the arranged separation chamber 41 can realize complete gas-liquid separation, so that the stability of the detection result of condensed water can be facilitated.

It should be noted that, in order to ensure the cleanliness of the condensed water and avoid the contamination of the condensed water, the first switch valve 51 is a sterile diaphragm valve. Further, the heat exchange assembly 30 is a sanitary type heat exchange assembly. The heat exchange assembly 30 is combined with the housing 20 to form a structure corresponding to a heat exchanger.

Referring to fig. 2, in fig. 2, compared to fig. 1, a throttle orifice 11 and a needle valve 12 are additionally disposed on a sample injection pipe 10. In one embodiment, the sampling tube 10 is provided with a throttle orifice 11 and a needle valve 12 in series. Therefore, in the process that pure steam flows into the sampling pipe 10, the stability of the amount of the inlet steam can be effectively ensured under the action of the throttling orifice plate 11 and the needle valve 12, and the influence of heat exchange fluctuation on the sampling result is avoided.

Referring to fig. 1 or 2, in one embodiment, the pure vapor sampling device further includes a vapor distribution plate 70. The steam distribution plate 70 is disposed inside the outer shell 20, the steam distribution plate 70 is connected to the inner wall of the outer shell 20, and the steam distribution plate 70 is located above the heat exchange assembly 30. Therefore, after the pure steam enters the inside of the shell 20 through the sampling pipe 10, the pure steam is equally distributed through the steam distribution disc 70 and then enters each heat exchange pipe 32, so that the heat exchange effect can be ensured, and the condensation effect of the pure steam is better.

Referring to fig. 1 or 2, in one embodiment, the pure steam sampling device further includes a draft tube 44 disposed inside the storage chamber 42. One end of the flow guide tube 44 communicates with the through hole 43, and the other end of the flow 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 storage chamber 42 by the flow guiding effect of the flow guiding pipe 44. In addition, since the guide tube 44 guides the condensed water to the bottom of the storage chamber 42, on one hand, during the sampling process, the generated condensed water is timely discharged outwards through the sampling tube 50, so that the instantaneity of sampling can be ensured, the contact time of the sampling vessel with the outside is reduced, and the accuracy of the sampling result can be effectively ensured; on the other hand, in the condensed water preparing step, the generated condensed water is introduced 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 running water state.

Referring to fig. 3 to 5, fig. 3 to 5 respectively show schematic structural diagrams of three different examples of pure vapor sampling devices. In one embodiment, the pure vapor sampling device further comprises a conductivity meter 80. The conductivity meter 80 is disposed at the bottom of the storage chamber 42. Thus, the conductivity of the condensed water is detected in real time by the conductivity meter 80, and the hysteresis of the sampling value can be avoided.

Referring to fig. 3 or 4, in one embodiment, the pure vapor sampling device further includes a second vent pipe 91. The second drain pipe 91 communicates with the top of the storage chamber 42. Specifically, the pure steam sampling device further comprises a second on-off valve 61. The second switching valve 61 is disposed on the first discharge pipe 60, and controls on/off of the first discharge pipe 60. Therefore, the working method of the pure steam sampling device also comprises a condensed water preparation step and a pure steam purging step. In the condensed water preparing step, it is necessary to close the first switching valve 51 and open the second switching valve 61, and the condensed water in the storage chamber 42 overflows into the second discharge pipe 91 after reaching the top portion of the storage chamber 42, and is discharged outside through the second discharge pipe 91. In the pure steam purging step, the first switch valve 51 and the second switch valve 61 are closed, and the pure steam is purged and sterilized during flowing through the sampling pipe 10, the orifice plate 11, the needle valve 12, the steam distribution plate 70, the heat exchange pipe 32, the separation chamber 41, the flow guide pipe 44 and the storage chamber 42. Furthermore, after the pure steam sampling device is arranged in the pure steam preparation system, the pure steam purging step, the condensed water preparation step and the pure steam sampling detection step can be correspondingly selected according to actual requirements, so that continuous work is realized.

Note that, similarly to the first switching valve 51, the second switching valve 61 is specifically a sterile diaphragm valve. Of course, the first switch valve 51 and the second switch valve 61 may be provided as other types of sanitary valves according to actual requirements, and are not limited herein.

It should be noted that the "sampling tube 50" may be a "part of the first switch valve 51", that is, the "sampling tube 50" and the "other part of the first switch valve 51" are integrally formed; the "sampling tube 50" may be manufactured separately from a separate member that is separable from the "other portion of the first on-off valve 51" and may be integrated with the "other portion of the first on-off valve 51". In one embodiment, the "sampling tube 50" is a part of the "first on-off valve 51" that is integrally formed.

It should be noted that the "first discharge pipe 60" may be a "part of the second on-off valve 61", that is, the "first discharge pipe 60" and the "other part of the second on-off valve 61" are integrally manufactured; the "first drain pipe 60", which may be a separate member from the "other portion of the second switching valve 61", may be manufactured separately and integrated with the "other portion of the second switching valve 61". In one embodiment, the "first discharge pipe 60" is a part of the "second on-off valve 61" that is integrally formed.

Referring to FIG. 5, in one embodiment, the pure vapor sampling apparatus further includes a discharge manifold 92. The first and

second discharge pipes

60 and 91 are communicated with a discharge manifold 92.

Referring to fig. 5, in one embodiment, the pure vapor sampling device further comprises a check valve 93. A check valve 93 is disposed in series with the discharge manifold 92. Therefore, the check valve 93 can enable the condensed water to flow on the discharge main pipe 92 in a one-way mode, the pure steam preparation system is guaranteed to be sealed and clean, the check valve is opened, water is continuously discharged through static pressure, and the discharge is continuous and stable.

Referring to fig. 5, in an embodiment, a pure steam preparation system includes the pure steam sampling device of any of the above embodiments, and further includes a pure steam generator (not shown), which is in communication with the sampling pipe 10.

When the pure steam preparation system performs the pure steam sampling detection step, the first switch valve 51 is opened, pure steam enters the inside of the shell 20 through the sample inlet pipe 10 and enters each heat exchange pipe 32, meanwhile, a cold medium enters the heat exchange chamber 33 through the first connector 21, exchanges heat with the pure steam inside the heat exchange pipe 32 and then is discharged outside through the second connector 22, the pure steam enters the inside of the separation chamber 41 after being cooled and condensed, gas-liquid separation is performed in the separation chamber 41, uncondensed steam and uncondensed gas are discharged outside through the first discharge pipe 60, and condensed water enters the inside of the storage chamber 42 through the through hole 43 and then is conveyed outside to the condensed water sampling device through the sampling pipe 50. Therefore, the arranged heat exchange assembly 30 can realize pure steam cooling and condensation, and the arranged separation chamber 41 can realize complete gas-liquid separation, so that the stability of the detection result of condensed water can be facilitated.

Referring to any one of fig. 1 to 5, in an embodiment, a method of operating a pure steam sampling device according to any one of the above embodiments includes:

a pure steam sampling and detecting step, namely opening a first switch valve 51; specifically, when the first drain pipe 60 and the second open-close valve 61 are provided, the second open-close valve 61 is also opened in synchronization; pure steam enters the inside of the shell 20 through the sample inlet pipe 10 and enters each heat exchange pipe 32, and meanwhile, a cold medium enters the heat exchange chamber 33 through the first joint 21 to exchange heat with the pure steam inside the heat exchange pipe 32 and then is discharged outwards through the second joint 22; pure steam enters the separation chamber 41 after being cooled and condensed by the heat exchange assembly 30, and is subjected to gas-liquid separation in the separation chamber 41; the uncondensed steam and the uncondensed gas are discharged to the outside through the first discharge pipe 60, and the condensed water is introduced into the inside of the storage chamber 42 through the through hole 43 and then is outwardly transferred to the condensed water sampling device through the sampling pipe 50.

According to the working method of the pure steam sampling device, the heat exchange assembly 30 can realize pure steam cooling and condensation, and the separation chamber 41 can realize complete gas-liquid separation, so that the stability of the detection result of condensed water can be facilitated.

Referring to fig. 5, in one embodiment, the operation method of the pure steam sampling device further includes a condensed water preparing step of closing the first switch valve 51 and opening the second switch valve 61; pure steam enters the inside of the shell 20 through the sample inlet pipe 10 and enters each heat exchange pipe 32, and meanwhile, a cold medium enters the heat exchange chamber 33 through the first joint 21 to exchange heat with the pure steam inside the heat exchange pipe 32 and then is discharged outwards through the second joint 22; pure steam enters the separation chamber 41 after being cooled and condensed by the heat exchange assembly 30, and is subjected to gas-liquid separation in the separation chamber 41; the uncondensed steam and the uncondensed gas are discharged outside through the first discharge pipe 60, and the condensed water is introduced into the inside of the storage chamber 42 through the through hole 43 and then discharged outside through the second discharge pipe 91.

Referring to fig. 5, in one embodiment, the operation method of the pure steam sampling device further includes a pure steam purging step, in which the first switch valve 51 is closed and the second switch valve 61 is closed during the startup phase of the pure steam generator; pure steam enters the inside of the shell 20 through the sample inlet pipe 10 and enters each heat exchange pipe 32; the pure steam enters the inside of the separation chamber 41 after passing through the heat exchange assembly 30, enters the inside of the storage chamber 42 through the guide pipe 44, and is then discharged to the outside through the second discharge pipe 91.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims

1. A pure steam sampling device, comprising:

the sampling tube is communicated with the top of the shell;

the heat exchange assembly is arranged in the shell and comprises two tube plates arranged on the inner wall of the shell at intervals, a plurality of heat exchange tubes arranged between the two tube plates, a first joint and a second joint which are arranged on the shell, one end of each heat exchange tube penetrates through and is arranged on one tube plate, the other end of each heat exchange tube penetrates through and is arranged on the other tube plate, the two tube plates and the inner wall of the shell are enclosed to form a heat exchange cavity, and the first joint and the second joint are both communicated with the heat exchange cavity;

the partition plate is arranged on the inner wall of the shell and is arranged at intervals with the tube plate at the bottom, the partition plate, the tube plate at the bottom and the inner wall of the shell enclose to form a separation chamber, the partition plate and the bottom wall of the shell enclose to form a storage chamber, a through hole is formed in the partition plate, and the separation chamber is communicated with the storage chamber through the through hole;

the sampling pipe, first ooff valve and first discharge tube, the sampling pipe with the bottom of storage chamber is linked together, first ooff valve set up in on the sampling pipe, first discharge tube with the top of separation chamber is linked together.

2. The pure steam sampling device according to claim 1, wherein the sampling pipe is provided with a throttle orifice and a needle valve in series in sequence.

3. The pure vapor sampling device according to claim 1, further comprising a vapor distribution tray disposed within the interior of the housing, the vapor distribution tray being attached to the interior wall of the housing, the vapor distribution tray being positioned above the heat exchange assembly.

4. The pure steam sampling device according to claim 1, further comprising a flow guide tube disposed inside the storage chamber, wherein 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.

5. The pure steam sampling device of claim 1, further comprising a conductivity meter disposed at a bottom of the storage chamber.

6. The pure vapor sampling device according to claim 1, further comprising a second drain tube in communication with a top of the storage chamber.

7. The pure steam sampling device according to claim 6, further comprising a discharge header, wherein the first and second discharge pipes are each in communication with the discharge header.

8. The pure vapor sampling device according to claim 7, further comprising a check valve disposed in series on the discharge manifold.

9. The pure steam sampling device according to claim 7, further comprising a second switch valve disposed on the first discharge pipe for controlling the on/off of the first discharge pipe.

10. A pure steam preparation system, comprising a pure steam sampling device according to any one of claims 1 to 9, and further comprising a pure steam generator in communication with the sample inlet tube.