An electrochemical reaction cell for measuring gas pressure

Abstract

The utility model discloses an electrochemical reaction pool for measuring gas pressure, including shell and the reaction cavity of setting in the shell, reaction cavity is connected with gas pressure sensor, and the conduction path for transmitting the reaction gas pressure is equipped between reaction cavity and gas pressure sensor, and the sealed structure is arranged between reaction cavity and shell to prevent gas leakage. The utility model has the advantages that: through the cooperation of gas pressure sensor and internal air hole, the problem that traditional reaction pool cannot monitor reaction pressure is solved, and key data support is provided for experimental research, the multiple sealed design of conical sealing ring, silica gel gasket and O type sealing ring is adopted, gas does not leak, and pressure measurement precision is high, each part is assembled through the thread connection and the nesting mode, and the utility model discloses an electrochemical reaction pool for measuring gas pressure, including shell and the reaction cavity of setting in the shell, reaction cavity is connected with gas pressure sensor, and the conduction path for transmitting the reaction gas pressure is equipped between reaction cavity and gas pressure sensor, and the sealed structure is arranged between reaction cavity and shell to prevent gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical reaction cell technology, and in particular to an electrochemical reaction cell for measuring gas pressure. Background Technology

[0002] In chemical experimental research, electrochemical reaction cells are core devices used to hold reactants and provide a reaction environment, and are widely used in electrochemical reactions, catalytic reactions, and materials synthesis. Traditional electrochemical reaction cells typically consist of an outer shell, a reaction chamber, and a basic sealed structure. Their main function is to provide a closed or controllable space (such as a pressurized or temperature-controlled environment) to meet the requirements of specific reaction conditions.

[0003] However, with the deepening of experimental research, higher requirements have been placed on the precise monitoring of the reaction process. Gas pressure, as one of the key parameters of a chemical reaction, directly reflects the reaction progress (such as the rate of gaseous product formation), the reaction equilibrium state (such as pressure changes in reversible reactions), and potential risks (such as container rupture due to overpressure). However, existing electrochemical reaction cells generally suffer from a single-function limitation: their structural design focuses only on maintaining the stability of the reaction environment (such as achieving basic sealing through sealing rings), without integrating a pressure monitoring module. This prevents researchers from obtaining real-time gas pressure data during the reaction process, limiting in-depth analysis of the reaction mechanism (such as the inability to establish a correlation model between pressure and reaction rate); furthermore, if excessive gas generation during the reaction leads to an abnormal increase in pressure within the cell, the lack of early warning may cause safety hazards.

[0004] Therefore, it is necessary to develop an electrochemical reaction cell for measuring gas pressure. After searching, no technical solution identical to this invention was found. Utility Model Content

[0005] The main technical problem solved by this invention is to provide an electrochemical reaction cell for measuring gas pressure, thereby solving one or more of the problems in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an electrochemical reaction cell for measuring gas pressure, comprising a shell and a reaction chamber disposed within the shell. The innovation lies in that: the reaction chamber is connected to a gas pressure sensor, a conduction path for transmitting the reaction gas pressure is provided between the reaction chamber and the gas pressure sensor, and a sealing structure is provided between the reaction chamber and the shell to prevent gas leakage.

[0007] In some embodiments, a bushing, a battery providing the reaction medium, and an inner cylinder are sequentially arranged inside the reaction chamber. A conical sealing ring and a convex washer are fitted on the outer side of the inner cylinder, and the cylinder is tightened with a nut to form the first part of the sealing structure.

[0008] In some embodiments, a threaded cylinder is threadedly connected to the side of the inner cylinder near the top, and a silicone gasket is disposed inside the upper part of the inner cylinder. The gas pressure sensor is screwed into the upper part of the inner cylinder by the thread and compresses the silicone gasket to form a seal.

[0009] In some embodiments, the gas pressure sensor has an integrated O-ring, which is pressed against the top of the inner cylinder to form the second part of the sealing structure.

[0010] In some embodiments, the conduction path is a vent opened inside the inner cylinder, through which the gas generated by the reaction is transmitted to a gas pressure sensor, which then transmits the pressure signal to an external analysis device.

[0011] The beneficial effects of this utility model are: Real-time monitoring function: By combining a gas pressure sensor with internal gas vents, the problem of traditional reaction tanks being unable to monitor reaction pressure is solved, providing key data support for experimental research; High sealing performance: The multi-seal design using conical sealing rings, silicone gaskets, and O-rings ensures no gas leakage and high pressure measurement accuracy; Compact structure: The components are assembled through threaded connections and nesting, resulting in a small size and easy disassembly and assembly, suitable for small-scale chemical reaction scenarios in laboratories; High flexibility: The threaded cylinder design can adapt to different experimental needs, expanding the application range of the reaction tank. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0013] Figure 1 This is a schematic diagram of the structure of an electrochemical reaction cell for measuring gas pressure according to this utility model.

[0014] Figure 2 yes Figure 1 Cross-sectional view.

[0015] Figure 3 This is a schematic diagram of the outer shell of an electrochemical reaction cell for measuring gas pressure according to the present invention.

[0016] Figure 4This is a schematic diagram of the internal cylindrical structure of an electrochemical reaction cell used for measuring gas pressure according to this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of a gas pressure sensor for measuring gas pressure in an electrochemical reaction cell according to the present invention. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] like Figures 1 to 5 As shown, the present invention includes: an electrochemical reaction cell for measuring gas pressure, which can monitor the gas pressure generated during the chemical reaction in real time, thus solving the technical defect that traditional reaction cells cannot monitor pressure; the present invention will be further described in detail below with reference to the accompanying drawings and specific structure.

[0020] The electrochemical reaction cell described in this embodiment mainly consists of an outer shell 100, a cylindrical pin, a bushing 200, an inner cylinder 300, a nut 400, a conical sealing ring 500, a convex washer 600, a threaded cylinder, a button battery 900, a silicone gasket 800, and a gas pressure sensor 700. The specific structure, connection relationship, and working principle of each component are as follows:

[0021] The outer shell 100 serves as the basic support structure for the reaction tank, and its interior forms a cavity to accommodate other components. Cylindrical pins are located on the outer or inner wall of the outer shell 100 to fix the connection position of the outer shell 100 with other equipment, ensuring that the reaction tank is stably placed during the experiment. Its advantage is that it provides a closed reaction space and achieves reliable positioning with external equipment through cylindrical pins.

[0022] Inside the cavity of the outer casing 100, a bushing 200, a button battery 900, and an inner cylinder 300 are sequentially placed. The bushing 200 is an annular structure that fits around the button battery 900, isolating the outer casing 100 from the battery 900 and preventing damage from direct friction. The button battery 900 serves as the reaction medium, storing materials capable of electrochemical reactions (such as a lithium-manganese dioxide system). During the reaction, it produces gases (such as oxygen or carbon dioxide), which are the source of gas pressure. The inner cylinder 300 is a cylindrical metal component with a through-hole (not separately labeled in the attached diagram) along its axial direction. This through-hole forms the core conduction path for the reaction gas to be transmitted to the pressure sensor. The outer wall of the inner cylinder 300 is machined with external threads for mating with subsequent sealing components.

[0023] On the outside of the inner cylinder 300, a conical sealing ring 500 and a convex washer 600 are sequentially fitted, and then tightened with a nut 400. The conical sealing ring 500 is a frustum-shaped elastic element (such as fluororubber) with a smaller top and larger bottom, its conical surface fitting against the outer wall of the inner cylinder 300. The convex washer 600 is an annular metal piece (such as stainless steel) with an upward-protruding center, its lower surface contacting the top of the conical sealing ring 500. The nut 400 has an internal thread structure, engaging with the external thread on the outside of the inner cylinder 300. When tightened downwards, the convex washer 600 is pressed downwards by the nut 400. Its convex structure evenly transmits the force to the conical sealing ring 500, causing the conical sealing ring 500 to expand radially outwards and tightly fit against the inner wall of the outer shell 100, forming the first sealing structure. The advantages of this design are: the deformation capability of the conical sealing ring 500 can adapt to different assembly gaps, resulting in a more reliable sealing effect; the convex structure of the convex washer 600 can disperse the local pressure of the nut 400, preventing the conical sealing ring 500 from being damaged due to uneven force.

[0024] The inner cylinder 300 has a small threaded hole on its side near the top, and the threaded cylinder is connected to the hole through the external thread. The threaded cylinder serves as an auxiliary interface for the reaction tank, which can be connected to external gas pipelines (such as for replenishing reaction gas or venting excess gas), or can be blocked to maintain an independent environment inside the reaction tank. Its advantage is that it improves the flexibility of the reaction tank, and the gas flow mode can be adjusted according to experimental needs.

[0025] A large threaded hole is formed inside the inner cylinder 300, with a silicone gasket 800 (made of high-elasticity silicone rubber) placed at the bottom. The gas pressure sensor 700 is screwed into this large threaded hole through its external thread. The gas pressure sensor 700 is a commercially available product (such as a diffused silicon pressure sensor), and its front end is equipped with an O-ring 701 (made of nitrile rubber). When the sensor is screwed in, its bottom first compresses the silicone gasket 800. Due to its elastic deformation, the silicone gasket 800 fills the tiny gap between the large threaded hole of the inner cylinder 300 and the sensor, forming a second seal. At the same time, the O-ring 701 at the front end of the sensor is in close contact with the top end face of the inner cylinder 300, and is further sealed by the tightening force, forming a third seal. The advantage of the triple sealing structure (conical sealing ring 500, silicone gasket 800, and O-ring 701) is that it greatly improves the airtightness of the reaction tank and avoids pressure measurement errors caused by gas leakage.

[0026] When the button cell 900 undergoes a chemical reaction (such as a discharge reaction) in the reaction tank, the internal materials of the battery 900 react to generate gas (e.g., CO2 is generated by the decomposition of the electrolyte in the lithium-ion battery 900). The gas is transmitted upward through the vent of the internal cylinder 300 to the sensing end of the gas pressure sensor 700. The gas pressure sensor 700 converts the received pressure signal into an electrical signal (such as a 4-20mA current signal) and transmits it through wires to an external data acquisition device (such as a computer or oscilloscope) to achieve real-time monitoring of the gas pressure during the reaction process.

[0027] The advantages of this technical solution are:

[0028] Real-time monitoring function: By combining the gas pressure sensor 700 with the internal gas vents, the problem of traditional reaction tanks being unable to monitor reaction pressure is solved, providing key data support for experimental research;

[0029] High sealing performance: The multi-seal design of the tapered sealing ring 500, silicone gasket 800 and O-ring 701 ensures no gas leakage and high pressure measurement accuracy.

[0030] Compact structure: The components are assembled by threaded connection and nesting, which makes it small in size and easy to disassemble and assemble, suitable for small-scale chemical reaction scenarios in the laboratory;

[0031] High flexibility: The threaded cylinder can be adapted to different experimental needs, expanding the application range of the reaction cell.

[0032] In summary, the electrochemical reaction cell of this embodiment, through its reasonable structural design and sealing scheme, achieves real-time monitoring of gas pressure, demonstrating significant practicality and technological advancement.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electrochemical reaction cell for measuring gas pressure, comprising a housing (100) and a reaction chamber (101) disposed within the housing (100), characterized in that: The reaction chamber (101) is connected to a gas pressure sensor (700). A transmission path for transmitting the reaction gas pressure is provided between the reaction chamber (101) and the gas pressure sensor (700). A sealing structure is provided between the reaction chamber (101) and the outer shell (100) to prevent gas leakage. A bushing (200), a battery (900) providing the reaction medium, and an inner cylinder (300) are sequentially arranged inside the reaction chamber (101). A conical sealing ring (500) and a convex washer (600) are fitted on the outside of the inner cylinder (300), and a nut is used to seal the gas. 400) Tighten to form the first part of the sealing structure; the inner cylinder (300) is connected to a threaded cylinder near the upper side by a thread, and a silicone gasket (800) is provided inside the upper part of the inner cylinder (300). The gas pressure sensor (700) is screwed into the upper part of the inner cylinder (300) by a thread and squeezes the silicone gasket (800) to form a seal; the gas pressure sensor (700) has an O-ring (701) on it, and the O-ring (701) is squeezed against the top of the inner cylinder (300) to form the second part of the sealing structure.

2. The electrochemical reaction cell for measuring gas pressure according to claim 1, characterized in that: The conduction path is a vent opened inside the inner cylinder (300). The gas generated by the reaction is transmitted to the gas pressure sensor (700) through the vent, and the gas pressure sensor (700) transmits the pressure signal to the external analysis equipment.

Images