Automatic oxygenation device for oxygen bomb of calorimeter

Abstract

The utility model discloses an automatic oxygen filling device for an oxygen bomb of a calorimeter, which comprises the oxygen bomb and an oxygen filling mechanism arranged at the top of the oxygen bomb. The oxygenating mechanism comprises an oxygen bomb nozzle fixing hook, a sliding piston seat, a sliding piston, a spring and an oxygenating cover; the oxygen bomb nozzle fixing hook is arranged at the bottom of the sliding piston seat and used for being connected with an oxygen bomb. The sliding piston is arranged in the sliding piston seat and can slide up and down relative to the sliding piston seat; the spring is arranged on the sliding piston and is arranged between the outer wall of the sliding piston and the inner wall of the sliding piston seat; the oxygenating cover is fixedly arranged at the top of the sliding piston seat; a first sealing ring and a second sealing ring are arranged on the sliding piston; the first sealing ring is arranged close to the top of the sliding piston, the second sealing ring is arranged close to the bottom of the sliding piston, and the first sealing ring and the second sealing ring are located between the outer wall of the sliding piston and the inner wall of the sliding piston seat. The technical problems of an existing oxygenating device in the aspects of heat conductivity, piston movement stability, sealing performance and the like are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for calorimeters, specifically to an automatic oxygen filling device for an oxygen bomb in a calorimeter. Background Technology

[0002] In the field of calorimetry, the oxygen bomb filling device plays a decisive role in the reliability and accuracy of experimental results; however, existing oxygen filling devices have many problems that urgently need to be solved.

[0003] In terms of thermal conductivity, the structural materials used in existing oxygen filling devices have high thermal conductivity. For example, during the oxygen filling process, heat is transferred rapidly, causing drastic temperature fluctuations inside the oxygen bomb. This unstable temperature environment seriously interferes with the combustion state of the sample, resulting in significant deviations in the test results and making it difficult to meet the requirements of high-precision calorimetric analysis.

[0004] Regarding piston movement, due to design and manufacturing deficiencies, the piston's movement within the oxygen filling device is extremely unstable. For example, during the oxygen filling process, the piston frequently jams and jumps, causing the oxygen filling pressure to be unstable and unable to be maintained at the set value, with pressure fluctuations reaching ±0.2 MPa. This not only makes it impossible to accurately control the amount of oxygen injected into the oxygen bomb, but may also cause the internal pressure of the oxygen bomb to become excessively high momentarily, posing a safety hazard.

[0005] In terms of sealing, existing oxygen filling devices have serious shortcomings. For example, oxygen leakage often occurs between the piston and piston seat, and at the connection between the oxygen filling cover and other components. The leakage of large amounts of oxygen not only wastes resources, but may also form flammable and explosive mixtures in the surrounding environment, posing a risk of fire or explosion at any time.

[0006] Therefore, it is urgent to develop a new type of automatic oxygen filling device for oxygen bombs that has significant improvements in thermal conductivity, piston movement stability, and sealing. Utility Model Content

[0007] The purpose of this invention is to provide an automatic oxygen filling device for oxygen bombs in calorimeters, so as to solve the technical problems mentioned in the background art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] An automatic oxygen filling device for a calorimeter oxygen bomb includes an oxygen bomb and an oxygen filling mechanism, wherein the oxygen filling mechanism is located on top of the oxygen bomb.

[0010] The oxygen filling mechanism includes an oxygen nozzle fixing hook, a sliding piston seat, a sliding piston, a spring, and an oxygen filling cover;

[0011] The oxygen bomb nozzle fixing hook is located at the bottom of the sliding piston seat for connecting the oxygen bomb; the sliding piston is located inside the sliding piston seat and can slide up and down relative to the sliding piston seat; the spring is located on the sliding piston and is disposed between the outer wall of the sliding piston and the inner wall of the sliding piston seat; the oxygen filling cover is fixed to the top of the sliding piston seat.

[0012] The sliding piston is provided with a first sealing ring and a second sealing ring; the first sealing ring is disposed near the top of the sliding piston, and the second sealing ring is disposed near the bottom of the sliding piston, and the first sealing ring and the second sealing ring are located between the outer wall of the sliding piston and the inner wall of the sliding piston seat;

[0013] A heat-insulating ring gasket is provided between the sliding piston seat and the oxygen bomb nozzle fixing hook.

[0014] The above technical solution offers the following advantages: Compared with existing technologies, this utility model provides an automatic oxygen filling device for calorimeter oxygen bombs, which effectively improves the overall structure and assembly method of the oxygen filling mechanism.

[0015] From the perspective of thermal conductivity, by setting a heat-insulating ring pad between the sliding piston seat and the fixed hook of the oxygen bomb nozzle, the heat transfer path from the oxygen filling mechanism to the oxygen bomb can be effectively blocked, reducing the interference of heat generated during the oxygen filling process on the internal temperature of the oxygen bomb, thereby ensuring the temperature stability inside the oxygen bomb, avoiding the impact of temperature fluctuations on sample combustion, and greatly improving the accuracy of test results.

[0016] Regarding piston movement stability, the spring between the two plays a crucial role by placing the sliding piston inside the sliding piston seat. It can buffer the impact force on the piston during oxygenation, making the sliding piston slide more smoothly and steadily, effectively preventing jamming and jumping. This not only stabilizes the oxygenation pressure and precisely controls the oxygenation amount, but also reduces the risk of instantaneous excessive pressure inside the oxygen bomb, ensuring the safety and reliability of the oxygenation process.

[0017] In terms of sealing, the first and second sealing rings at the top and bottom of the sliding piston are located between the outer wall of the sliding piston and the inner wall of the sliding piston seat. This double sealing design greatly enhances the sealing between the piston and the piston seat, effectively prevents oxygen leakage, avoids resource waste, and reduces the possibility of safety hazards such as fire or explosion caused by oxygen leakage, providing a reliable guarantee for the normal operation of the calorimeter.

[0018] In a preferred embodiment, the sliding piston is provided with an oxygen-filling passage, which is located near the central axis of the sliding piston.

[0019] The above technical solution has the following advantages: by setting the oxygen charging passage at the central axis of the sliding piston, the oxygen transmission path is ensured to be more direct and efficient, reducing gas flow resistance and enabling rapid and stable oxygen charging into the oxygen bomb, which greatly improves the oxygen charging efficiency. At the same time, this design helps to accurately control the oxygen charging flow and pressure, thereby achieving precise control of the oxygen charging amount, meeting the strict requirements of different experiments for oxygen bomb charging, and improving the overall quality of calorimetric experiments.

[0020] In a preferred embodiment, the oxygen filling cover has a cavity; the cavity is located between the bottom of the oxygen filling cover and the top of the sliding piston seat; the oxygen filling passage input end is connected to the cavity, and the oxygen filling passage output end is connected to the oxygen bomb.

[0021] The above technical solution has the following advantages: by providing a cavity inside the oxygen filling cover, the cavity inside the oxygen filling cover serves as a pre-storage space for gas. This allows for more flexible adjustment of the oxygen filling speed and flow rate according to the actual needs of the oxygen bomb. Combined with the oxygen filling passage, this enables more precise oxygen filling operations and further optimizes the calorimetric experimental results.

[0022] In a preferred embodiment, the top of the sliding piston is provided with a U-shaped groove, and the bottom of the U-shaped groove is connected to the input end of the oxygen supply passage.

[0023] The above technical solution has the following advantages: By incorporating a U-shaped groove at the top of the sliding piston, a sophisticated oxygen transmission and mechanical coordination system is constructed. In oxygen transmission, the U-shaped groove plays a crucial role, seamlessly connecting one end to the cavity inside the oxygen filling cover and tightly linking the other end to the oxygen filling passage input. This unique layout greatly optimizes the oxygen transmission path. When oxygen flows from the cavity into the U-shaped groove, its special structure provides secondary buffering, resulting in a more stable oxygen flow rate. Simultaneously, it cleverly guides the oxygen flow, ensuring that oxygen enters the oxygen filling passage more smoothly and efficiently, providing a solid guarantee for the stable oxygen filling of the oxygen bomb.

[0024] From a mechanical perspective, the U-shaped groove plays an important power-assisted role in the oxygen filling process. As oxygen continues to flow in, the pressure change in the U-shaped groove generates a subtle force that effectively pushes the sliding piston, ensuring that the output end of the sliding piston is tightly connected to the oxygen bomb. This guarantees the sealing and stability of the oxygen filling process, reduces the risk of oxygen leakage, and comprehensively improves the oxygen filling performance and operational reliability of the calorimeter's automatic oxygen bomb filling device.

[0025] In a preferred embodiment, the bottom end of the sliding piston is provided with a sealing gasket, and the sealing gasket is provided with a through hole, which is connected to the output end of the oxygen supply passage.

[0026] The above technical solution has the following advantages: by providing a sealing gasket at the bottom of the sliding piston, the sealing performance at the connection between the sliding piston and the oxygen bomb is effectively enhanced, preventing oxygen leakage during the oxygen filling process and ensuring oxygen filling efficiency and safety; and by setting through holes, the oxygen filling passage is ensured to be unobstructed, allowing oxygen to smoothly reach the oxygen bomb, thereby improving the stability of oxygen filling of the calorimeter and the accuracy of experimental results.

[0027] In a preferred embodiment, an upper sealing ring is provided between the oxygen filling cover and the sliding piston seat, and the upper sealing ring is disposed between the bottom of the oxygen filling cover and the top of the sliding piston seat.

[0028] The above technical solution has the following advantages: by setting a sealing ring on the sliding piston near the top, the sealing performance of the device is effectively improved; oxygen leakage is prevented at the connection between the oxygen filling cover and the sliding piston seat, ensuring that the filled oxygen flows stably to the oxygen bomb through the predetermined oxygen filling path, improving the oxygen filling efficiency, ensuring the accuracy of the calorimetric analysis experiment, and avoiding safety hazards caused by oxygen leakage.

[0029] In a preferred embodiment, the oxygen-filling cover is provided with an inflation nozzle, which is connected to the cavity.

[0030] The above technical solution has the following advantages: by setting an inflation nozzle on the oxygen filling cover that is connected to the cavity, the oxygen filling process is greatly optimized; the inflation nozzle provides a convenient interface for the access of external oxygen sources, allowing oxygen to quickly enter the cavity and then flow smoothly into the oxygen filling path, ensuring a continuous and efficient oxygen filling process; moreover, the design of the inflation nozzle facilitates the connection of gas source equipment of different specifications, improves the adaptability of the device, meets the needs of various experimental scenarios, and enhances the practicality and flexibility of the automatic oxygen filling device for calorimeter oxygen bombs.

[0031] In a preferred embodiment, the oxygen supply passage is equipped with a one-way valve.

[0032] The above technical solution has the following advantages: by setting a one-way valve in the oxygen charging passage, it can effectively prevent oxygen backflow; ensure that the oxygen charged into the oxygen bomb flows continuously in one direction, maintain a stable oxygen charging pressure, avoid insufficient oxygen charging or pressure fluctuations caused by oxygen backflow, improve oxygen charging efficiency and reliability, and ensure the accuracy and stability of calorimetric experiments.

[0033] In a preferred embodiment, the diameter of the oxygenation passage is 1-2 mm.

[0034] The above technical solution offers the following benefits: By setting the oxygen filling passage diameter to 1-2 mm, it ensures a significant effect on pushing the sliding piston. The suitable small diameter allows for a relatively stable amount of oxygen passing through per unit time, generating continuous and balanced pressure. This powerfully propels the sliding piston to operate smoothly, preventing excessive force or rapid movement due to excessive gas flow, and avoiding insufficient piston power or jamming due to insufficient flow. This stable oxygen filling pressure makes the movement of the sliding piston within the piston seat smoother, reducing bounce and deviation, ensuring continuous and stable oxygen filling pressure, precisely controlling the oxygen filling amount, and guaranteeing the safety and reliability of the oxygen filling process. This provides solid support for the efficient operation of the automatic oxygen filling device for calorimeters. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 A cross-sectional view of the oxygen filling mechanism and oxygen bomb assembly provided by this utility model;

[0037] Figure 2 An explosion diagram of the oxygen filling mechanism provided by this utility model;

[0038] Figure 3 An explosion diagram of the oxygen filling mechanism provided by this utility model;

[0039] Figure 4 A three-dimensional schematic diagram of the oxygen filling mechanism and oxygen bomb assembly provided by this utility model;

[0040] Explanation of reference numerals in the attached figures;

[0041] 1-Oxygen bomb; 2-Oxygen filling mechanism; 21-Oxygen bomb nozzle fixing hook; 22-Sliding piston seat; 221-Heat insulation ring gasket; 222-First sealing ring; 223-Second sealing ring; 23-Sliding piston; 231-Oxygen filling passage; 24-Spring; 25-Oxygen filling cover; 251-Inflation nozzle; 252-Upper sealing ring; 3-Cavity; 4-U-shaped groove; 5-Sealing gasket. Detailed Implementation

[0042] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] Example 1

[0048] like Figures 1 to 4 As shown, an automatic oxygen filling device for a calorimeter oxygen bomb includes an oxygen bomb 1 and an oxygen filling mechanism 2, with the oxygen filling mechanism 2 located on top of the oxygen bomb 1.

[0049] The oxygen filling mechanism 2 includes an oxygen cartridge fixing hook 21, a sliding piston seat 22, a sliding piston 23, a spring 24, and an oxygen filling cover 25;

[0050] The oxygen bomb nozzle fixing hook 21 is located at the bottom of the sliding piston seat 22 and is used to connect the oxygen bomb 1; the sliding piston 23 is located inside the sliding piston seat 22 and can slide up and down relative to the sliding piston seat 22; the spring 24 is located on the sliding piston 23 and is located between the outer wall of the sliding piston 23 and the inner wall of the sliding piston seat 22; the oxygen filling cover 25 is fixed to the top of the sliding piston seat 22.

[0051] The sliding piston 23 is provided with a first sealing ring 222 and a second sealing ring 223; the first sealing ring 222 is disposed near the top of the sliding piston 23, and the second sealing ring 223 is disposed near the bottom of the sliding piston 23; the first sealing ring 222 and the second sealing ring 223 are located between the outer wall of the sliding piston 23 and the inner wall of the sliding piston seat 22.

[0052] A heat-insulating ring gasket 221 is provided between the sliding piston seat 22 and the oxygen bomb nozzle fixing hook 21;

[0053] From the perspective of thermal conductivity, by setting a heat insulation ring pad 221 between the sliding piston seat 22 and the oxygen bomb nozzle fixing hook 21, the heat transfer path from the oxygen filling mechanism 2 to the oxygen bomb 1 can be effectively blocked, reducing the interference of heat generated during the oxygen filling process on the internal temperature of the oxygen bomb 1, thereby ensuring the temperature stability inside the oxygen bomb 1, avoiding the impact of temperature fluctuations on sample combustion, and greatly improving the accuracy of test results.

[0054] Regarding the stability of piston movement, the spring 24 between the sliding piston 23 and the sliding piston seat 22 plays a crucial role by placing the sliding piston 23 inside the sliding piston seat 22. It can buffer the impact force on the piston during the oxygen filling process, making the sliding piston 22 slide more smoothly and steadily, effectively preventing jamming and jumping. This not only stabilizes the oxygen filling pressure and accurately controls the oxygen filling amount, but also reduces the risk of the pressure inside the oxygen bomb 1 being too high at an instant, ensuring the safety and reliability of the oxygen filling process.

[0055] In terms of sealing, the first and second sealing rings at the top and bottom of the sliding piston 23 are located between the outer wall of the sliding piston 23 and the inner wall of the sliding piston seat 24. This double sealing design greatly enhances the sealing between the piston and the piston seat, effectively prevents oxygen leakage, avoids resource waste, and reduces the possibility of safety hazards such as fire or explosion caused by oxygen leakage, providing a reliable guarantee for the normal operation of the calorimeter.

[0056] In this embodiment, an oxygen-filling passage 231 is provided inside the sliding piston 23, and the oxygen-filling passage 231 is located near the central axis of the sliding piston 23. By placing the oxygen-filling passage 231 at the central axis of the sliding piston 23, the oxygen transmission path is ensured to be more direct and efficient, reducing gas flow resistance and enabling rapid and stable oxygen filling into the oxygen bomb 1, which greatly improves the oxygen filling efficiency. At the same time, this design helps to accurately control the oxygen flow rate and pressure, thereby achieving precise control of the oxygen filling amount, meeting the strict requirements of different experiments for oxygen bomb filling, and improving the overall quality of calorimetric experiments.

[0057] In this embodiment, the oxygen filling cover 25 has a cavity 3 inside; the cavity 3 is located between the bottom of the oxygen filling cover 25 and the top of the sliding piston seat 22; the input end of the oxygen filling passage 231 is connected to the cavity 3, and the output end of the oxygen filling passage 231 is connected to the oxygen bomb 1; by providing a cavity 3 inside the oxygen filling cover 25, the cavity 3 inside the oxygen filling cover 25 serves as a pre-storage space for gas, which allows for more flexible adjustment of the oxygen filling speed and flow rate according to the actual needs of the oxygen bomb 1, and in conjunction with the oxygen filling passage, achieves more precise oxygen filling operation, further optimizing the calorimetric experiment effect.

[0058] In this embodiment, a U-shaped groove 4 is provided on the top of the sliding piston 23, and the bottom of the U-shaped groove 4 is connected to the input end of the oxygen filling passage 231. By providing a U-shaped groove 4 on the top of the sliding piston 23, an ingenious oxygen transmission and mechanical coordination system is constructed. In oxygen transmission, the U-shaped groove 4 plays a key role in connecting the upper and lower parts. One end of it is seamlessly connected to the cavity 3 inside the oxygen filling cover 25, and the other end is tightly connected to the input end of the oxygen filling passage 231. This unique layout greatly optimizes the oxygen transmission path. When oxygen flows from the cavity into the U-shaped groove 4, the special structure of the U-shaped groove 4 can buffer it twice, making the oxygen flow rate more stable, and at the same time cleverly guiding the oxygen flow direction, ensuring that the oxygen can enter the oxygen filling passage 231 more smoothly and efficiently, providing a solid guarantee for the stable oxygen filling of the oxygen bomb 1.

[0059] From a mechanical perspective, the U-shaped groove 4 plays an important power-assisted role in the oxygen filling process. As oxygen continues to flow in, the pressure change in the U-shaped groove 4 will generate a subtle force that effectively pushes the sliding piston 23, making the output end of the sliding piston 23 tightly connected to the oxygen bomb 1. This ensures the sealing and stability of the oxygen filling process, reduces the risk of oxygen leakage, and comprehensively improves the oxygen filling performance and operational reliability of the calorimeter's automatic oxygen bomb filling device.

[0060] In this embodiment, a sealing gasket 5 is provided at the bottom of the sliding piston 23, and a through hole is provided on the sealing gasket 5, which is connected to the output end of the oxygen filling passage 231. By providing a sealing gasket 5 at the bottom of the sliding piston 23, the sealing performance at the connection between the sliding piston 23 and the oxygen bomb 1 is effectively enhanced, preventing oxygen leakage during the oxygen filling process and ensuring oxygen filling efficiency and safety. Furthermore, by setting the through hole, the unobstructed flow of the oxygen filling passage 231 is ensured, allowing oxygen to smoothly reach the oxygen bomb 1, thereby improving the stability of oxygen filling of the calorimeter and the accuracy of experimental results.

[0061] In this embodiment, an upper sealing ring 252 is provided between the oxygen filling cover 25 and the sliding piston seat 22. The upper sealing ring 252 is located between the bottom of the oxygen filling cover 25 and the top of the sliding piston seat 22. By providing the upper sealing ring 252 near the top of the sliding piston 23, the sealing performance of the device is effectively improved. This prevents oxygen from leaking at the connection between the oxygen filling cover 25 and the sliding piston seat 22, ensuring that the filled oxygen flows stably to the oxygen bomb 1 through the predetermined oxygen filling passage 231, improving the oxygen filling efficiency, ensuring the accuracy of the calorimetric analysis experiment, and avoiding safety hazards caused by oxygen leakage.

[0062] In this embodiment, the oxygen filling cover 25 is provided with an air filling nozzle 251, which is connected to the cavity 3. The air filling nozzle 251 on the oxygen filling cover 25, which is connected to the cavity 3, greatly optimizes the oxygen filling process. The air filling nozzle 251 provides a convenient interface for the access of external oxygen sources, so that oxygen can quickly enter the cavity 3 and then flow smoothly into the oxygen filling passage 231, ensuring a continuous and efficient oxygen filling process. Moreover, the design of the air filling nozzle 251 makes it easy to connect to gas source equipment of different specifications, improves the adaptability of the device, meets the needs of various experimental scenarios, and enhances the practicality and flexibility of the automatic oxygen filling device for calorimeter oxygen bombs.

[0063] In this embodiment, a one-way valve is provided in the oxygen filling passage 231; by setting a one-way valve in the oxygen filling passage 231, it is ensured that oxygen backflow can be effectively prevented; the oxygen filling the oxygen bomb 1 is guaranteed to flow continuously in one direction, maintain a stable oxygen filling pressure, avoid oxygen backflow causing pressure fluctuations, improve oxygen filling efficiency and reliability, and ensure the accuracy and stability of calorimetry experiments.

[0064] In this embodiment, the diameter of the oxygen filling passage 231 is 1-2 mm. By setting the diameter of the oxygen filling passage 231 to 1-2 mm, it is ensured that it has a significant effect on pushing the sliding piston 23. The appropriate small diameter makes the amount of oxygen passing through per unit time relatively stable, which can generate continuous and balanced pressure, powerfully pushing the sliding piston 23 to run smoothly. It will not cause the piston to be subjected to excessive force or move too fast due to excessive gas flow, and it will also avoid insufficient piston power or jamming due to insufficient flow. This stable oxygen filling pressure makes the movement of the sliding piston 23 within the sliding piston seat 22 more stable, reducing jumping and deviation, ensuring continuous and stable oxygen filling pressure, accurately controlling the amount of oxygen filling, ensuring the safety and reliability of the oxygen filling process, and providing solid support for the efficient operation of the automatic oxygen filling device of the calorimeter oxygen bomb.

[0065] In this embodiment, the central axis of the oxygen filling passage 231 is aligned with the central axis of the oxygen bomb nozzle of the oxygen bomb 1.

[0066] In this embodiment, the sealing gasket 5, the first sealing ring 222, and the second sealing ring 223 are made of commonly used sealing materials such as fluororubber and silicone rubber.

[0067] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0068] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only used to help understand the method and core ideas of this utility model.

[0069] The above are merely preferred embodiments of this utility model. It should be noted that, due to the limitations of written expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or variations without departing from the principle of this utility model, and can also combine the above-mentioned technical features in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered as protection of this utility model.

Claims

1. An automatic oxygen filling device for a calorimeter oxygen bomb, comprising an oxygen bomb (1) and an oxygen filling mechanism (2), wherein the oxygen filling mechanism (2) is disposed on the top of the oxygen bomb (1), characterized in that: The oxygen filling mechanism (2) includes an oxygen nozzle fixing hook (21), a sliding piston seat (22), a sliding piston (23), a spring (24), and an oxygen filling cover (25); The oxygen bomb nozzle fixing hook (21) is located at the bottom of the sliding piston seat (22) and is used to connect the oxygen bomb (1); the sliding piston (23) is located inside the sliding piston seat (22) and can slide up and down relative to the sliding piston seat (22); the spring (24) is located on the sliding piston (23) and is located between the outer wall of the sliding piston (23) and the inner wall of the sliding piston seat (22); the oxygen filling cover (25) is fixed to the top of the sliding piston seat (22); The sliding piston (23) is provided with a first sealing ring (222) and a second sealing ring (223); the first sealing ring (222) is disposed near the top of the sliding piston (23), and the second sealing ring (223) is disposed near the bottom of the sliding piston (23); the first sealing ring (222) and the second sealing ring (223) are located between the outer wall of the sliding piston (23) and the inner wall of the sliding piston seat (22); A heat-insulating ring gasket (221) is provided between the sliding piston seat (22) and the oxygen bomb nozzle fixing hook (21).

2. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 1, characterized in that: The sliding piston (23) is provided with an oxygenation passage (231), which is located near the central axis of the sliding piston (23).

3. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 2, characterized in that: The oxygen filling cover (25) has a cavity (3) inside; the cavity (3) is located between the bottom of the oxygen filling cover (25) and the top of the sliding piston seat (22); the input end of the oxygen filling passage (231) is connected to the cavity (3), and the output end of the oxygen filling passage (231) is connected to the oxygen bomb (1).

4. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 3, characterized in that: The top of the sliding piston (23) is provided with a U-shaped groove (4), and the bottom of the U-shaped groove (4) is connected to the input end of the oxygenation passage (231).

5. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 2, characterized in that: The bottom end of the sliding piston (23) is provided with a sealing gasket (5), and the sealing gasket (5) is provided with a through hole, which is connected to the output end of the oxygen supply passage (231).

6. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 1, characterized in that: An upper sealing ring (252) is provided between the oxygen filling cover (25) and the sliding piston seat (22), and the upper sealing ring (252) is provided between the bottom of the oxygen filling cover (25) and the top of the sliding piston seat (22).

7. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 3, characterized in that: The oxygen filling cover (25) is provided with an air inlet (251), which is connected to the cavity (3).

8. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 2, characterized in that: The oxygen supply passage (231) is equipped with a one-way valve.

9. The automatic oxygen filling device for a calorimeter oxygen bomb according to claim 2, characterized in that: The diameter of the oxygenation pathway (231) is 1-2 mm.

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