A sealing structure and use method of a liquid sampling bottle for radioactive environment

Abstract

The present application provides a sealing structure and a method for using a liquid sampling bottle for a radioactive environment, which belongs to the technical field of sampling and delivering samples in radioactive environment factories, and includes: a bottle stopper body is embedded in the bottle mouth and fits tightly with the inner wall of the bottle mouth, which is a first layer of sealing; after the bottle stopper body is embedded in the bottle mouth, the first sealing part fits tightly with the end face of the bottle mouth, which is a second layer of sealing; the second sealing part fits tightly with the inner wall surface of the bottle mouth, which is a third layer of sealing; through the triple extrusion sealing structure design at different positions of the sealing plug and the bottle mouth, and the three levels of sealing do not interfere with each other, good sealing inclusiveness between the sealing plug and the bottle mouth is guaranteed, and the sampling liquid in the bottle is guaranteed not to leak during sampling and delivery; after the sample liquid enters the sampling bottle, there is no need to open the sampling bottle again, and the outwardly protruding second sealing part is embedded in the bottle mouth and locked with the bottle mouth to ensure the stability and reliability of the sealed connection between the sealing plug and the bottle mouth, and prevent the state in the bottle from being destroyed and leakage from occurring.

Description

Technical Field

[0001] The present application belongs to the technical field of sampling and delivering samples in radioactive environment plants, and specifically relates to a sealing structure and a method for using a liquid sampling bottle for a radioactive environment. Background Art

[0002] In radioactive environment plants such as spent fuel reprocessing plants and nuclear power plants, a large number of liquid sampling and control operations are involved. Sampling and analyzing liquids is an important means to judge the operation status of the project, monitor the process and the composition and properties of the liquid, and ensure operational safety.

[0003] Liquids in radioactive environments are highly complex, highly radioactive, highly corrosive, and highly toxic, and their storage containers are typically in inaccessible, sealed environments, necessitating indirect sampling. Currently, the primary method for sampling and delivering liquids in strong ionizing radiation environments in China is a pneumatic delivery system. This system uses a sampling bottle to draw the liquid sample to be tested, which is then transported to different areas via pipelines for both sampling and delivery.

[0004] As the core component of the pneumatic sample delivery system, the sampling bottle is responsible for sampling, sample containment and sealing, sample delivery, and sample unloading. The sealing structure of the sampling bottle is the key to whether the liquid sample can be safely and stably delivered to different areas during the sampling and delivery process. At present, the sampling bottles used in the sampling system are generally sealed in the form of threaded connections and sealing gaskets. When assembling the sealing cap, there is a certain probability that a complete seal will not be formed, and the sealing stability is poor. The sealing cap is prone to loosening when colliding with the pipeline, which reduces the sealing effect, resulting in sampling failure or spillage of the sampled liquid in the pipeline, or even the bottle cap falling off, causing radioactive contamination. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] In view of this, according to a first aspect of an embodiment of the present application, a sealing structure for a liquid sampling bottle for a radioactive environment is proposed, comprising:

[0007] Bottle mouth;

[0008] a bottle stopper body, wherein a first end of the bottle stopper body is embedded in a first end of the bottle opening, a second end of the bottle stopper body is exposed outside the bottle opening, and at least a portion of an outer sidewall of the bottle stopper body is tightly fitted with an inner sidewall of the bottle opening;

[0009] A first sealing portion, the first sealing portion is provided on the second end of the bottle stopper body along the circumference of the bottle stopper body, and the bottom surface of the first sealing portion is in close contact with the end surface of the bottle mouth;

[0010] The second sealing part is an elastomer, and the second sealing part is arranged on the first end of the bottle stopper body along the circumference of the bottle stopper body. The second sealing part is embedded in the bottle mouth and clamped with the bottle mouth, and the top surface of the second sealing part is tightly fitted with the inner wall of the bottle mouth.

[0011] In a feasible embodiment, the first sealing portion, the second sealing portion and the outer side wall of the bottle stopper body are arranged to form a locking groove, and the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0012] A locking portion is provided on the first end of the bottle mouth along the circumference of the bottle mouth and is embedded in the locking groove;

[0013] The top surface of the locking portion is tightly fitted with the bottom surface of the first sealing portion; the bottom surface of the locking portion is tightly fitted with the top surface of the second sealing portion; and the inner side wall of the locking portion is tightly fitted with the outer side wall of the bottle stopper body.

[0014] In a feasible embodiment, the stopper body is an elastomer.

[0015] In a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0016] The anti-slip portion is arranged on the inner side wall of the locking portion. The anti-slip portion can squeeze the bottle stopper body located in the bottle mouth, so that the bottle stopper body generates elastic deformation in the bottle mouth.

[0017] In a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0018] A thinning groove is provided on the end surface of the second end of the bottle stopper body, and the thinning groove is recessed toward the first end of the bottle stopper body to reduce the thickness of the bottle stopper body.

[0019] In a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0020] The guide part is arranged on the end surface of the first end of the bottle stopper body, the guide part protrudes in the direction away from the second end of the bottle stopper body, and the guide part is used to disperse the liquid.

[0021] In a feasible implementation manner, the protrusion height of the guide portion gradually increases from the periphery to the inside of the guide portion, and the guide surface of the guide portion is a smooth curved surface.

[0022] In a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0023] The corrugated section is arranged at the second end of the bottle mouth, and the corrugated section is elastic and can produce elastic deformation after being compressed.

[0024] In a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes:

[0025] The outer flange is arranged on the outer side wall of the bottle mouth and is used to position the bottle mouth during transportation.

[0026] According to a second aspect of an embodiment of the present application, a method for using a liquid sampling bottle for a radioactive environment is provided, which is applied to a sealing structure of a liquid sampling bottle for a radioactive environment according to any of the above technical solutions. The method comprises:

[0027] Press the main body of the bottle stopper into the bottle mouth and adjust the position of the main body of the bottle stopper;

[0028] Make the top surface of the second sealing portion fit tightly against the inner side wall of the bottle mouth;

[0029] Make the outer wall of the bottle stopper body fit tightly with the inner wall of the bottle mouth;

[0030] Make the bottom surface of the first sealing portion fit tightly with the end surface of the bottle mouth;

[0031] Make the sampling needle penetrate the bottle stopper body to deliver the liquid;

[0032] Pull out the sampling needle to complete the sampling.

[0033] Compared with the prior art, the sealing structure and use method of a radioactive environment liquid sampling bottle of the present application have the following beneficial effects:

[0034] The sealing structure of a liquid sampling bottle for a radioactive environment provided in an embodiment of the present application includes a bottle mouth, a bottle stopper body, a first sealing portion, and a second sealing portion. The bottle stopper body, the first sealing portion, and the second sealing portion constitute a sealing plug structure. The bottle stopper body is embedded in the bottle mouth and tightly fits against the inner side wall of the bottle mouth, forming a first layer of sealing. After the bottle stopper body is embedded in the bottle mouth, the first sealing portion tightly fits against the end surface of the bottle mouth, forming a second layer of sealing. The second sealing portion tightly fits against the inner wall surface of the bottle mouth, forming a third layer of sealing. The triple-extrusion sealing structure design at different positions of the sealing plug and the bottle mouth, and the three levels of sealing do not interfere with each other, ensures good sealing and containment between the sealing plug and the bottle mouth, ensuring that the sample liquid in the bottle does not leak during sampling and sample delivery. After the sample liquid enters the sampling bottle, the sampling bottle does not need to be opened again. The protruding second sealing portion is embedded in the bottle mouth and locked with the bottle mouth, thereby ensuring the stability and reliability of the sealed connection between the sealing plug and the bottle mouth, preventing the state in the bottle from being destroyed and leakage due to the sealing plug falling off, and improving the safety and reliability of the sampling and sample delivery process. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0036] Figure 1 A schematic structural diagram of a sealing structure for a liquid sampling bottle for a radioactive environment according to an embodiment of the present application;

[0037] Figure 2 A schematic structural diagram of a pipeline transportation of a sealing structure for a liquid sampling bottle for a radioactive environment according to an embodiment of the present application;

[0038] Figure 3 A schematic structural diagram of a first type of bottle stopper body of a sealing structure for a liquid sampling bottle for a radioactive environment according to an embodiment of the present application;

[0039] Figure 4 for Figure 3 AA section view;

[0040] Figure 5 A schematic structural diagram of a second type of bottle stopper body of a sealing structure for a liquid sampling bottle for a radioactive environment provided in one embodiment of the present application;

[0041] Figure 6 A schematic structural diagram of a third type of bottle stopper body of a sealing structure for a liquid sampling bottle for a radioactive environment provided in one embodiment of the present application;

[0042] Figure 7 A schematic structural diagram of a fourth type of bottle stopper body of a sealing structure for a liquid sampling bottle for a radioactive environment provided in an embodiment of the present application;

[0043] Figure 8 A schematic flowchart of the steps of using a liquid sampling bottle for a radioactive environment according to an embodiment of the present application;

[0044] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names is as follows:

[0045] 11. Bottle mouth; 12. Bottle stopper body; 13. First sealing part; 14. Second sealing part; 15. Pipe; 16. Locking groove; 17. Locking part; 18. Anti-slip part; 19. Thinning groove; 20. Guide part; 21. Corrugated section; 22. Outer flange. DETAILED DESCRIPTION

[0046] In the description of this application, 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" 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 this application and simplifying the description, and do not indicate or imply 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 a limitation on this application.

[0047] 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 one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0049] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0050] like Figure 1 As shown, according to the first aspect of the embodiment of the present application, a sealing structure for a liquid sampling bottle for a radioactive environment is proposed, comprising: a bottle mouth 11, a stopper body 12, a first sealing portion 13 and a second sealing portion 14; the first end of the stopper body 12 is embedded in the first end of the bottle mouth 11, and the second end of the stopper body 12 is exposed outside the bottle mouth 11, and at least part of the outer wall of the stopper body 12 is tightly fitted with the inner wall of the bottle mouth 11; the first sealing portion 13 is arranged on the second end of the stopper body 12 along the circumference of the stopper body 12, and the bottom surface of the first sealing portion 13 is tightly fitted with the end surface of the bottle mouth 11; the second sealing portion 14 is an elastomer, and the second sealing portion 14 is arranged on the first end of the stopper body 12 along the circumference of the stopper body 12, the second sealing portion 14 is embedded in the bottle mouth 11 and clamped with the bottle mouth 11, and the top surface of the second sealing portion 14 is tightly fitted with the inner wall of the bottle mouth 11.

[0051] The sealing structure of the liquid sampling bottle for radioactive environment provided in the embodiment of the present application includes a bottle mouth 11, a bottle stopper body 12, a first sealing part 13 and a second sealing part 14; the bottle stopper body 12, the first sealing part 13 and the second sealing part 14 constitute a sealing plug structure, the bottle stopper body 12 is embedded in the bottle mouth 11 and fits tightly with the inner wall of the bottle mouth 11, which is the first layer of sealing; after the bottle stopper body 12 is embedded in the bottle mouth 11, the first sealing part 13 fits tightly with the end face of the bottle mouth 11, which is the second layer of sealing; the second sealing part 14 fits tightly with the inner wall surface of the bottle mouth 11, which is the third layer of sealing; through the sealing plug and The triple extrusion sealing structure design at different positions of the bottle mouth 11, and the three-level seals do not interfere with each other, ensures good sealing inclusiveness between the sealing plug and the bottle mouth 11, and ensures that the sampling liquid in the bottle does not leak during sampling and sample delivery; after the sample liquid enters the sampling bottle, there is no need to open the sampling bottle again. The outwardly protruding second sealing part 14 is embedded in the bottle mouth 11 and locked with the bottle mouth 11 to ensure the stability and reliability of the sealed connection between the sealing plug and the bottle mouth 11, prevent the state in the bottle from being destroyed and leakage caused by the falling of the sealing plug, and improve the safety and reliability of the sampling and sample delivery process.

[0052] It should be noted that before sampling, the air in the bottle should be exhausted first, and then the sealing plug should be installed. The complete seal between the sealing plug and the bottle mouth 11 can maintain the negative pressure state in the sampling bottle, thereby generating an adsorption force through the negative pressure of the sampling bottle, and the sample liquid is sucked from the sampling needle into the sampling bottle to complete the sampling. However, the negative pressure will also generate an adsorption force on the sealing plug, causing the sealing plug to have a tendency to move into the bottle body. The first sealing part 13 fits with the end face of the bottle mouth 11, which prevents the sealing plug from shifting into the bottle while sealing, thereby further ensuring the stability of the sealing plug position and the negative pressure state in the sampling bottle; and the first sealing part 13 and the second sealing part 14 respectively limit the bottle plug body 12 at both ends of the bottle plug body 12, ensuring the structural stability of the connection between the sealing plug and the bottle mouth 11. Figure 2 After the sampling bottle takes samples, the sampling bottle is launched by the launcher into the pipeline 15 and transported to other areas through the pipeline 15. During the long-distance transportation process of the pipeline 15, the sampling bottle and the sealing plug come into contact and collide with the pipeline 15. The first sealing part 13 and the second sealing part 14 are used to seal and limit on both sides of the bottle plug body 12 to prevent the sealing plug from shifting and falling off, and to avoid leakage of the liquid in the sampling bottle, which is beneficial to improving the safety and continuity of the operation of the sampling system.

[0053] Further, such as Figure 1 and Figure 2 The maximum width of the first sealing portion 13 is smaller than the minimum width of the bottle mouth 11 to prevent the first sealing portion 13 from contacting the inside of the pipe 15 during transportation of the sampling bottle, avoid the rotation and displacement of the sealing plug caused by friction and collision between the first sealing portion 13 and the inner wall of the pipe 15, and ensure the stability and reliability of the connection between the sealing plug and the bottle mouth 11.

[0054] Furthermore, the position of the sealing plug in contact with the bottle mouth 11 is smoothed by a precision injection molding process so that the surface of the sealing plug can fit closely with the corresponding surfaces of the bottle mouth 11, ensuring that all levels of sealing have good sealing effects.

[0055] like Figure 3 and Figure 4 As shown, in a feasible embodiment, the first sealing portion 13, the second sealing portion 14 and the outer side wall of the stopper body 12 are arranged to form a locking groove 16, and the sealing structure of the liquid sampling bottle for radioactive environment also includes: a locking portion 17; the locking portion 17 is arranged on the first end of the bottle mouth 11 along the circumference of the bottle mouth 11, and the locking portion 17 is embedded in the locking groove 16; the top surface of the locking portion 17 is tightly fitted with the bottom surface of the first sealing portion 13; the bottom surface of the locking portion 17 is tightly fitted with the top surface of the second sealing portion 14; the inner side wall of the locking portion 17 is tightly fitted with the outer side wall of the stopper body 12.

[0056] In this technical solution, the first sealing portion 13, the second sealing portion 14 and the outer side wall of the bottle stopper body 12 are arranged to form a locking groove 16 that can accommodate the bottle mouth 11. By providing a locking portion 17 that is adapted to the shape of the locking groove 16 on the bottle mouth 11, the locking groove 16 is used to accommodate the locking portion 17 to improve the tightness of the seal between the sealing plug and the bottle mouth 11 and the connection reliability, thereby improving the sealing strength between the sealing plug and the bottle mouth 11.

[0057] In this technical solution, the top surface of the locking portion 17 and the end surface of the bottle mouth 11 are located in the same plane to ensure that the top surface of the locking portion 17 and the end surface of the bottle mouth 11 can fit tightly with the bottom surface of the first sealing portion 13 to ensure the sealing effect.

[0058] In the most preferred solution, the locking portion 17 and the bottle mouth 11 are an integrally formed structure to ensure the flatness between the top surface of the locking portion 17 and the end surface of the bottle mouth 11 .

[0059] In a feasible embodiment, the stopper body 12 is an elastomer.

[0060] In this technical solution, the bottle stopper body 12 is elastic, so that the bottle stopper body 12 can be smoothly inserted into the bottle mouth 11, reducing the difficulty of disassembling and assembling the bottle stopper body 12, and at the same time, the side wall surface of the bottle stopper body 12 is squeezed and sealed with the bottle mouth 11, thereby improving the sealing strength of the first layer of sealing.

[0061] In this technical solution, when sampling, the sampling needle is passed through the stopper body 12 to allow the sample liquid to enter the bottle for sampling. By making the stopper body 12 elastic, the stopper body 12 has a certain deformation margin. On the one hand, the difficulty of inserting the sampling needle into the stopper body 12 can be reduced; on the other hand, when the sampling needle is pulled out of the stopper body 12, the needle hole can be closed under the elastic action of the stopper body 12 itself, which is beneficial to improving the anti-leakage ability of the stopper body 12 and preventing leakage of the sample liquid in the bottle.

[0062] In some examples, the sealing plug is a one-piece molded structure made of rubber. Preferably, the sealing plug is made of a specially formulated electrochemical neoprene A-90 modified composite material. This material maintains excellent elasticity and structural strength even after being immersed in 90% nitric acid for 40 hours, meeting the desired sealing requirements between the sealing plug and the sampling bottle.

[0063] like Figure 1 As shown, in a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment also includes: an anti-slip portion 18; the anti-slip portion 18 is arranged on the inner wall of the locking portion 17, and the anti-slip portion 18 can squeeze the stopper body 12 located in the bottle mouth 11, so that the stopper body 12 produces elastic deformation in the bottle mouth 11.

[0064] In this technical solution, the anti-slip portion 18 protrudes toward the inside of the stopper body 12, and the anti-slip portion 18 squeezes the stopper body 12 to increase the friction between the stopper body 12 and the bottle mouth 11, preventing the stopper body 12 from rotating and displacing, thereby avoiding the problem of sample liquid leakage in the bottle due to displacement of the stopper body 12.

[0065] Furthermore, the surface of the anti-slip portion 18 is smooth to prevent the anti-slip portion 18 from scratching the sealing plug when the sealing plug is installed in the bottle mouth 11, thereby ensuring the structural integrity of the sealing plug after installation, thereby ensuring the integrity of the seal between the sealing plug and the bottle mouth 11. Specifically, the anti-slip portion 18 can be a semicircular protrusion structure.

[0066] As a preferred solution, the anti-slip portion 18 is arranged on the inner wall surface of the bottle mouth 11 along the circumference of the bottle mouth 11. The anti-slip portion 18 squeezes the stopper body 12 to serve as the fourth layer of seal between the sealing stopper and the bottle mouth 11, further improving the sealing strength and effect between the sealing stopper and the bottle mouth 11.

[0067] like Figure 1 、 Figure 3 and Figure 4 As shown, in a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment also includes: a thinning groove 19; the thinning groove 19 is arranged on the end face of the second end of the stopper body 12, and the thinning groove 19 is recessed toward the first end of the stopper body 12 to reduce the thickness of the stopper body 12.

[0068] In this technical solution, a thinning groove 19 is provided on the stopper body 12 to reduce the thickness of the stopper body 12 so that the sealing plug has a moderate deformation margin. On the basis of ensuring its own sealing integrity, it is convenient for the sampling needle to pass through the stopper body 12 from the thinning groove 19, thereby reducing the difficulty of inserting and removing the sampling needle, and preventing the sealing plug from being displaced when inserting and removing the sampling needle, thereby ensuring the stability of the sealing plug when installed in the bottle mouth 11, and further reducing the possibility of leakage due to displacement of the sealing plug.

[0069] Furthermore, the center point of the thinning groove 19 coincides with the center point of the bottle stopper body 12 , so that after the sampling bottle is positioned, the sampling needle can penetrate from the thinnest part of the bottle stopper body 12 .

[0070] In some examples, such as Figures 5 to 7 The longitudinal section of the thinning groove 19 can be a semicircular groove, a U-shaped groove, a V-shaped groove or an inverted trapezoid. As a preferred embodiment, Figure 4 The thinning groove 19 is a semicircular groove. After the thinning groove 19 is set on the stopper body 12, no stress concentration point is added on the stopper body 12, thereby preventing cracks from occurring on the stopper body 12 during the insertion and removal of the sampling needle, and ensuring that only the sampling needle hole is left on the stopper body 12.

[0071] like Figure 4 As shown, in a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment also includes: a guide portion 20, the guide portion 20 is arranged on the end face of the first end of the stopper body 12, the guide portion 20 protrudes in the direction away from the second end of the stopper body 12, and the guide portion 20 is used to disperse the liquid.

[0072] In this technical solution, a guide portion 20 is provided at the bottom of the stopper body 12. During the transportation of the sampling bottle, the sample liquid in the sampling bottle may impact the stopper body 12. By providing the guide portion 20, the sample liquid impacting the stopper body 12 is guided and dispersed, thereby preventing leakage due to concentration of the sample liquid.

[0073] like Figure 4 As shown, in a feasible embodiment, the protrusion height of the guide portion 20 gradually increases from the periphery of the guide portion 20 to the inside, and the guide surface of the guide portion 20 is a smooth curved surface.

[0074] In this technical solution, the thickness of the guide portion 20 decreases from the center to the periphery, so that the sample liquid can be evenly dispersed to a position away from the center of the stopper body 12 under the guidance of the guide portion 20, thereby preventing the sample liquid from leaking from the sampling needle hole.

[0075] In some examples, such as Figures 5 to 7 The guide portion 20 may be a hemispherical protrusion, a semi-elliptical protrusion, a conical protrusion or a terraced protrusion. Figure 4 The guide part 20 is a hemispherical protrusion, which has a uniform dispersion effect on the liquid. At the same time, after the hemispherical protrusion guide part 20 at the lower end of the stopper body 12 enters the bottle mouth 11, under the squeezing of the bottle mouth 11, the unconstrained part of the guide part 20 will bulge slightly to the surroundings, ensuring that there is no gap between the guide part 20 and the bottle mouth 11, thereby playing a good sealing role.

[0076] like Figure 1 and Figure 2 As shown, in a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment also includes: a corrugated section 21, which is arranged at the second end of the bottle mouth 11, and the corrugated section 21 is elastic and can produce elastic deformation after being compressed.

[0077] In this technical solution, the corrugated section 21 is arranged on the bottle mouth 11 at one end away from the bottle stopper body 12. By compressing the corrugated section 21, the gas in the bottle can be discharged, and then the sealing stopper is installed to make the interior of the sampling bottle in a negative pressure state. By observing whether the corrugated section 21 rebounds, the integrity of the seal between the sealing stopper and the bottle mouth 11 can be detected, thereby quickly and intuitively judging whether the sealed bottle can be used directly for sampling, which is conducive to improving the efficiency of sampling and sample delivery.

[0078] In this technical solution, when the corrugated section 21 rebounds, it proves that the sampling bottle is leaking, and the sealing plug and the bottle mouth 11 are not completely sealed, which affects the negative pressure state in the sampling bottle, and the sample liquid cannot be effectively sucked into the sampling bottle through the negative pressure in the sampling bottle; when the corrugated section 21 does not rebound, it proves that the sampling bottle is sealed completely and is not leaking, so that the sampling needle passes through the bottle plug body 12, and the sample liquid is sucked into the sampling bottle under the action of negative pressure. After sampling, the sampling needle is pulled out and the sampling bottle is transported through the pipeline 15.

[0079] like Figure 1 and Figure 2 As shown, in a feasible embodiment, the sealing structure of the liquid sampling bottle for radioactive environment further includes: an outer flange 22, which is arranged on the outer side wall of the bottle mouth 11, and the outer flange 22 is used to position the bottle mouth 11 during transportation.

[0080] In this technical solution, the sampling bottle is transported by a transportation system, and the sampling system is used for needle sampling to avoid workers being exposed to a radioactive environment; by providing an outer flange 22 outside the bottle mouth 11, the sampling bottle can be clamped and positioned during transportation and sampling, ensuring that the sampling needle can accurately and smoothly pass through the stopper body 12 into the sampling bottle, thereby ensuring the continuity of sampling and sample delivery and improving work efficiency.

[0081] In this technical solution, the outer flange 22 can cooperate with the groove on the tool rack to achieve clamping and positioning of the sampling bottle, and the outer flange 22 can also play a limiting role in the pipeline 15, ensuring that the edge of the sealing plug does not contact the pipeline 15 at the bend of the pipeline 15, preventing the sealing plug from shifting, ensuring the sealing of the sampling bottle during transportation in the pipeline 15, and preventing the sample liquid from spilling during transportation and becoming difficult to clean.

[0082] According to the second aspect of this application, Figure 8 As shown, a method for using a liquid sampling bottle for a radioactive environment is proposed, which is applied to the sealing structure of the liquid sampling bottle for a radioactive environment as in any of the above technical solutions, and the method includes:

[0083] Step 100: Press the bottle stopper body 12 into the bottle mouth 11 and adjust the position of the bottle stopper body 12; install the sealing plug into the bottle mouth 11 so that the second sealing portion 14 is embedded in the bottle mouth 11;

[0084] Step 200: The top surface of the second sealing portion 14 is tightly fitted to the inner side wall of the bottle mouth 11 to ensure the integrity of the third sealing layer;

[0085] Step 300: The outer wall of the bottle stopper body 12 is tightly fitted with the inner wall of the bottle mouth 11 to ensure the integrity of the first layer of sealing;

[0086] Step 400: The bottom surface of the first sealing portion 13 is tightly fitted to the end surface of the bottle mouth 11 to ensure the integrity of the second layer of sealing. The sealing plug wraps around the bottle mouth 11 to ensure the integrity of the three-layer sealing.

[0087] Step 500: The sampling needle penetrates the bottle stopper body 12 to absorb the liquid; after the sealing plug is sealed with the bottle mouth 11, the sampling bottle is in a negative pressure state, and the sample liquid is sucked into the sampling bottle through the sampling needle;

[0088] Step 600: Pull out the sampling needle to complete sampling; after the sample liquid is sucked into the sampling bottle by negative pressure, pull out the sampling needle, and the sealing plug closes the sampling needle hole under its own elastic action, sealing the sampling bottle again to prevent leakage of the sample liquid during transportation.

[0089] It can be understood that the method for using the liquid sampling bottle for a radioactive environment provided in the embodiment of the present application is applied to the sealing structure of the liquid sampling bottle for a radioactive environment such as any of the above-mentioned technical solutions. Therefore, the method for using the liquid sampling bottle for a radioactive environment has all the beneficial effects of the sealing structure of the liquid sampling bottle for a radioactive environment of the above-mentioned technical solutions.

[0090] By using the method for sampling a liquid sample for a radioactive environment provided in an embodiment of the present application, a sealing plug structure composed of a bottle stopper body 12, a first sealing portion 13 and a second sealing portion 14 wraps the bottle mouth 11, and the bottle stopper body 12 is embedded in the bottle mouth 11 and fits tightly with the inner wall of the bottle mouth 11, which is the first layer of sealing; after the bottle stopper body 12 is embedded in the bottle mouth 11, the first sealing portion 13 fits tightly with the end face of the bottle mouth 11, which is the second layer of sealing; the second sealing portion 14 fits tightly with the inner wall surface of the bottle mouth 11, which is the third layer of sealing; by the sealing plug and the bottle mouth 11 at different positions, the sealing plug 12 is sealed. The triple extrusion sealing structure design and the three-level sealing do not interfere with each other ensure good sealing inclusiveness between the sealing plug and the bottle mouth 11, and ensure that the sampling liquid in the bottle does not leak during the sampling and sample delivery process; after the sample liquid enters the sampling bottle, there is no need to open the sampling bottle again. The outwardly protruding second sealing part 14 is embedded in the bottle mouth 11 and locked with the bottle mouth 11 to ensure the stability and reliability of the sealing connection between the sealing plug and the bottle mouth 11, prevent the state in the bottle from being destroyed and leakage caused by the falling of the sealing plug, and improve the safety and reliability of the sampling and sample delivery process.

[0091] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0092] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application. The above are merely preferred embodiments of the present application. It should be noted that those skilled in the art may make various improvements and variations without departing from the technical principles of the present application, and such improvements and variations shall also be considered within the scope of protection of the present application.

Claims

1. A sealing structure for a liquid sampling bottle for a radioactive environment, characterized in that: The sealing structure of the liquid sampling bottle for radioactive environment comprises: Bottle mouth; a bottle stopper body, wherein a first end of the bottle stopper body is embedded in the first end of the bottle mouth, a second end of the bottle stopper body is exposed outside the bottle mouth, and at least a portion of an outer sidewall of the bottle stopper body is tightly fitted with an inner sidewall of the bottle mouth; a first sealing portion, the first sealing portion being provided on the second end of the bottle stopper body along the circumference of the bottle stopper body, the bottom surface of the first sealing portion being in close contact with the end surface of the bottle mouth; a second sealing portion, the second sealing portion being an elastic body and being disposed on the first end of the bottle stopper body along the circumference of the bottle stopper body, the second sealing portion being embedded in the bottle mouth and engaged with the bottle mouth, and the top surface of the second sealing portion being in close contact with the inner side wall of the bottle mouth; a thinning groove, the thinning groove being provided on an end surface of the second end of the bottle stopper body, the thinning groove being recessed toward the first end of the bottle stopper body to reduce the thickness of the bottle stopper body; a guide portion, the guide portion being provided on an end surface of the first end of the bottle stopper body, the guide portion protruding in a direction away from the second end of the bottle stopper body, and the guide portion being used to disperse the liquid; The protrusion height of the guide portion gradually increases from the periphery of the guide portion to the inside, and the guide surface of the guide portion is a smooth curved surface; a corrugated section, the corrugated section being arranged at the second end of the bottle mouth, the corrugated section being elastic and capable of generating elastic deformation when pressurized; An outer flange, the outer flange being arranged on the outer side wall of the bottle mouth and being used for positioning the bottle mouth during transportation; After the sampling bottle takes the sample, it is launched by the launcher into the pipeline for transportation; The maximum width of the first sealing portion is smaller than the minimum width of the bottle mouth, so as to prevent the first sealing portion from contacting the inside of the pipe during transportation of the sampling bottle, thereby avoiding friction and collision between the first sealing portion and the inner wall of the pipe; The outer flange plays a limiting role in the pipeline. At the pipe bend, the edge of the sealing plug does not contact the pipeline.

2. The sealing structure of a liquid sampling bottle for radioactive environment according to claim 1, characterized in that: The first sealing portion, the second sealing portion and the outer side wall of the bottle stopper body are arranged to form a locking groove, and the sealing structure of the liquid sampling bottle for radioactive environment further includes: a locking portion, the locking portion being provided on the first end of the bottle mouth along the circumference of the bottle mouth and being embedded in the locking groove; The top surface of the locking portion is tightly fitted with the bottom surface of the first sealing portion; the bottom surface of the locking portion is tightly fitted with the top surface of the second sealing portion; the inner side wall of the locking portion is tightly fitted with the outer side wall of the bottle stopper body.

3. The sealing structure of a liquid sampling bottle for radioactive environment according to claim 2, characterized in that: The bottle stopper body is an elastomer.

4. The sealing structure of a liquid sampling bottle for radioactive environment according to claim 3, characterized in that: An anti-slip portion is provided on the inner side wall of the locking portion, and the anti-slip portion can squeeze the bottle stopper body located in the bottle mouth, so that the bottle stopper body generates elastic deformation in the bottle mouth.

5. A method for using a liquid sampling bottle for a radioactive environment, characterized in that: Applied to a sealing structure for a liquid sampling bottle for a radioactive environment as claimed in any one of claims 1 to 4, the method comprising: Press the bottle stopper body into the bottle mouth and adjust the position of the bottle stopper body; making the top surface of the second sealing portion closely fit the inner side wall of the bottle mouth; The outer side wall of the bottle stopper body is tightly fitted with the inner side wall of the bottle mouth; making the bottom surface of the first sealing portion closely fit the end surface of the bottle mouth; Allowing the sampling needle to penetrate the bottle stopper body to deliver the liquid; Pull out the sampling needle to complete the sampling.

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