Automatic nitrogen charging device

Abstract

The utility model discloses an automatic nitrogen filling device relates to nitrogen filling device technical field, including nitrogen filling device main part and installation component, and nitrogen filling device main part includes air inlet pipeline, connecting pipeline, air outlet pipeline, flow regulating valve and flowmeter, and air inlet pipeline one end is equipped with input pipeline, and input pipeline one end is connected with air inlet pipeline, and the other end is connected with nitrogen source, and air inlet pipeline other end is connected with flow regulating valve one end, and flow regulating valve other end is connected with connecting pipeline one end, and connecting pipeline other end is connected with flowmeter one end, and flowmeter other end is connected with air outlet pipeline one end, and air outlet pipeline other end is connected with nitrogen input in one step electrolytic system, and the safety hidden danger of personnel on -the -spot operation, operation precision, timeliness problem of insufficient that operation safety hidden danger and operation precision that manual nitrogen filling protection brings because hydrogen is in explosion limit in the stage of opening and stopping of current one step electrolytic system are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of nitrogen filling devices, specifically to an automatic nitrogen filling device. Background Technology

[0002] In the one-step electrolysis production process, hydrogen is generated in large quantities as a major byproduct. Under normal production conditions, the hydrogen concentration in the system is outside the explosive limit, thus possessing high safety and posing no risk of explosion. However, the situation becomes more complex during the start-up and shutdown phases of the electrolysis system. Due to the presence of some side reactions during this stage, these reactions promote oxygen generation, causing the hydrogen concentration in the system to fall into the explosive limit range, posing a significant safety hazard to production.

[0003] To effectively address this issue, nitrogen protection is widely adopted in the industry. Nitrogen, due to its stable chemical properties, acts as an inert gas to dilute hydrogen concentration, reducing it below the explosive limit and ensuring the safe operation of the electrolysis system. In current production practice, nitrogen purging is primarily done manually, requiring operators to be physically present at the production site. This method is not only labor-intensive but also, due to the limitations of manual operation, makes it difficult to ensure the accuracy and timeliness of the nitrogen purging process, thus increasing safety risks to some extent.

[0004] In conclusion, there is an urgent practical need to develop a device capable of automatic nitrogen filling. Utility Model Content

[0005] Based on this, and in response to the above problems, this utility model proposes an automatic nitrogen charging device, which solves the problems of the current one-step electrolysis system requiring manual nitrogen charging protection during start-up and shutdown, which poses safety hazards for on-site personnel and lacks operational accuracy and timeliness.

[0006] The technical solution of this utility model is:

[0007] An automatic nitrogen filling device includes a nitrogen filling device body and an installation assembly. The nitrogen filling device body is mounted on the installation assembly and includes an inlet pipe, a connecting pipe, an outlet pipe, a flow regulating valve, and a flow meter. One end of the inlet pipe is provided with an input pipe, which is connected to the inlet pipe at one end and to a nitrogen source at the other end. An input solenoid valve, a pressure gauge, and an exhaust pipe are sequentially arranged along the nitrogen flow direction on the input pipe. One end of the exhaust pipe is connected to the input pipe, and the other end is connected to a nitrogen recovery device. An exhaust solenoid valve is provided on the exhaust pipe. The other end of the inlet pipe is connected to one end of the flow regulating valve, which is connected to one end of the connecting pipe. The other end of the connecting pipe is connected to one end of the flow meter, and the other end of the flow meter is connected to one end of the outlet pipe. The other end of the outlet pipe is connected to the nitrogen input port of a one-step electrolysis system.

[0008] Preferably, it also includes a control unit, wherein the flow regulating valve, flow meter, input solenoid valve, pressure gauge and exhaust solenoid valve are electrically connected to the control unit, and the control unit is used to control the flow regulating valve, flow meter, input solenoid valve, pressure gauge and exhaust solenoid valve.

[0009] Preferably, it also includes a hydrogen concentration detector, which is installed in the one-step electrolysis system to detect the hydrogen concentration in the one-step electrolysis system. The hydrogen concentration detector is electrically connected to the control unit.

[0010] Preferably, it also includes an audible and visual alarm unit, which is electrically connected to the control unit.

[0011] Preferably, the mounting assembly includes a mounting top plate, a mounting bottom plate, a scissor lift structure, and three mounting structures. The mounting top plate is positioned above the mounting bottom plate, and the scissor lift structure is positioned between the mounting top plate and the mounting bottom plate to adjust the height of the mounting top plate. The three mounting structures are fitted onto the mounting top plate and are detachably connected to it. The air intake pipe, connecting pipe, and air outlet pipe are respectively mounted on the three mounting structures and are detachably connected to them.

[0012] Preferably, the mounting structure includes a fixed base and an arc-shaped fixing plate. The arc-shaped fixing plate is located on the top of the fixed base and is detachably connected to the fixed base by bolts. A fixing groove is provided between the fixed base and the arc-shaped fixing plate. The air inlet pipe, the connecting pipe, and the air outlet pipe are respectively installed in the fixing grooves of the three mounting structures. The mounting top plate is provided with straight slots that cooperate with the fixed bases in the three mounting structures. The fixed bases in the three mounting structures are detachably connected to the straight slots on the mounting top plate by bolts.

[0013] Preferably, the scissor lift structure includes a scissor structure and a drive structure. One end of the scissor structure is rotatably connected to the mounting top plate and the mounting bottom plate respectively, and the other end of the scissor structure is slidably connected to the mounting top plate and the mounting bottom plate respectively through a sliding component. The scissor structure is rotatably connected to the sliding component. The drive structure is set on the mounting bottom plate and is configured to cooperate with the scissor structure for driving the scissor structure.

[0014] Preferably, a pair of rotating connecting seats are provided on the top plate and the bottom plate respectively. The pair of rotating connecting seats on the top plate are respectively located on one side of the bottom of the top plate and are detachably connected to the top plate by bolts. The pair of rotating connecting seats on the bottom plate are respectively located on one side of the top of the bottom plate and are detachably connected to the bottom plate by bolts. The upper end of one side of the scissor structure is rotatably connected to the pair of rotating connecting seats on the top plate, and the lower end of one side of the scissor structure is rotatably connected to the pair of rotating connecting seats on the bottom plate.

[0015] Preferably, the sliding assembly includes a pair of sliding connectors, which are respectively disposed on the mounting top plate and the mounting bottom plate. Each sliding connector includes a connecting horizontal plate, a pair of rotating mounting seats, a pair of slide rails, and a pair of sliding blocks. The pair of slide rails disposed on the mounting top plate are detachably connected to one side of the bottom of the mounting top plate by bolts, and the pair of slide rails disposed on the mounting bottom plate are detachably connected to one side of the top of the mounting bottom plate by bolts. The pair of sliding blocks are slidably connected to the pair of slide rails. One side of the connecting horizontal plate is detachably connected to the pair of sliding blocks by bolts. The pair of rotating mounting seats are disposed on the other side of the connecting horizontal plate and are detachably connected to the connecting horizontal plate by bolts. The upper end of the other side of the scissor structure is rotatably connected to the pair of rotating mounting seats in the sliding connectors disposed at the bottom of the mounting top plate, and the lower end of the other side of the scissor structure is rotatably connected to the pair of rotating mounting seats in the sliding connectors disposed at the top of the mounting bottom plate.

[0016] Preferably, the drive structure includes a fixed threaded block, a threaded rod, a rotating handle, and a pair of screw mounting seats. The fixed threaded block is fixedly mounted on the connecting horizontal plate of the sliding connector located on the mounting base plate. The pair of screw mounting seats are mounted on the mounting base plate and are detachably connected to the mounting base plate by bolts. The pair of screw mounting seats are respectively located on both sides of the connecting horizontal plate of the sliding connector located on the mounting base plate. The threaded rod is located between the pair of screw mounting seats. Both ends of the threaded rod pass through the pair of screw mounting seats and are rotatably connected to the pair of screw mounting seats. The threaded rod passes through the fixed threaded block and is threadedly connected to the fixed threaded block. The rotating handle is fixedly mounted at one end of the threaded rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In use, this invention allows nitrogen supplied by a nitrogen source to enter through an input pipeline by remotely opening the input solenoid valve. The pressure is then monitored by a pressure gauge, regulated by a flow regulating valve, and monitored by a flow meter before being injected into the one-step electrolysis system through the outlet pipeline. This dilutes the concentration of hydrogen generated during start-up and shutdown. After nitrogen purging is complete, the input solenoid valve is closed, thus completing the nitrogen purging process. This solves the problem of current one-step electrolysis systems requiring manual nitrogen purging during start-up and shutdown due to the explosive limits of hydrogen, which poses safety hazards for on-site personnel and lacks precision and timeliness. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an automatic nitrogen filling device described in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the circuit structure of an automatic nitrogen filling device described in an embodiment of this utility model;

[0022] Figure 3 This is a partial structural diagram of an automatic nitrogen filling device described in an embodiment of this utility model. Figure 1 ;

[0023] Figure 4 This is a partial structural diagram of an automatic nitrogen filling device described in an embodiment of this utility model. Figure 2 ;

[0024] Figure 5 This is a partial structural diagram of an automatic nitrogen filling device described in an embodiment of this utility model. Figure 3 ;

[0025] Explanation of reference numerals in the attached figures:

[0026] 10-Nitrogen charging device main body, 11-Mounting components, 12-Inlet pipe, 13-Connecting pipe, 14-Outlet pipe, 15-Flow regulating valve, 16-Flow meter, 17-Input pipe, 18-Input solenoid valve, 19-Pressure gauge, 20-Exhaust pipe, 21-Exhaust solenoid valve, 22-Control unit, 23-Hydrogen concentration detector, 24-Audible and visual alarm unit, 25-Mounting top plate, 26-Mounting bottom plate, 27-Scissor lift structure, 28-Mounting structure, 29-Fixing seat, 30-Arc-shaped fixing plate, 31-Fixing groove, 32-Straight groove, 33-Scissor structure, 34-Drive structure, 35-Sliding component, 36-Rotating connecting seat, 37-Sliding connector, 38-Connecting cross plate, 39-Rotating mounting seat, 40-Slide rail, 41-Sliding block, 42-Fixing threaded block, 43-Threaded rotating rod, 44-Rotating handle, 45-Screw mounting seat. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0029] 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 the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a communication 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 embodiment of the invention according to the specific circumstances.

[0031] In this embodiment of the invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0033] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0034] Example:

[0035] like Figures 1 to 5 As shown, this embodiment discloses an automatic nitrogen filling device, including a nitrogen filling device body 10 and an installation assembly 11. The nitrogen filling device body 10 is mounted on the installation assembly 11. The nitrogen filling device body 10 includes an inlet pipe 12, a connecting pipe 13, an outlet pipe 14, a flow regulating valve 15, and a flow meter 16. One end of the inlet pipe 12 is provided with an input pipe 17, one end of which is connected to the inlet pipe 12, and the other end is connected to a nitrogen source. An input solenoid valve 18 is sequentially arranged on the input pipe 17 along the nitrogen flow direction. The system includes a pressure gauge 19 and an exhaust pipe 20. One end of the exhaust pipe 20 is connected to the input pipe 17, and the other end is connected to the nitrogen recovery equipment. An exhaust solenoid valve 21 is installed on the exhaust pipe 20. The other end of the inlet pipe 12 is connected to one end of the flow regulating valve 15. The other end of the flow regulating valve 15 is connected to one end of the connecting pipe 13. The other end of the connecting pipe 13 is connected to one end of the flow meter 16. The other end of the flow meter 16 is connected to one end of the outlet pipe 14. The other end of the outlet pipe 14 is connected to the nitrogen input port in the one-step electrolysis system.

[0036] In use, this invention allows nitrogen supplied by a nitrogen source to enter through the input pipe 17 by remotely opening the input solenoid valve 18. The pressure is then monitored by the pressure gauge 19, regulated by the flow regulating valve 15, and monitored by the flow meter 16 before being injected into the one-step electrolysis system through the outlet pipe 14. This dilutes the concentration of hydrogen generated during the start-up and shutdown phases of the one-step electrolysis system. After nitrogen purging is completed, the input solenoid valve 18 is closed, thus completing the nitrogen purging process. This solves the problem of the current one-step electrolysis system requiring manual nitrogen purging protection during start-up and shutdown phases due to the hydrogen being within its explosive limits, which poses safety hazards for on-site personnel and lacks operational accuracy and timeliness.

[0037] The system incorporates an exhaust pipe 20, an exhaust solenoid valve 21, and a pressure gauge 19. When the pressure inside the pipe is too high, the exhaust solenoid valve 21 can be remotely opened to release pressure, preventing the risk of pipe rupture due to excessive pressure. Simultaneously, the coordination between the flow regulating valve 15 and the flow meter 16 ensures that the hydrogen concentration is precisely diluted to a safe range, reducing the possibility of explosion at its source and providing sufficient safety redundancy.

[0038] It also includes a control unit 22. The flow regulating valve 15, flow meter 16, input solenoid valve 18, pressure gauge 19 and exhaust solenoid valve 21 are electrically connected to the control unit 22. The control unit 22 is used to control the flow regulating valve 15, flow meter 16, input solenoid valve 18, pressure gauge 19 and exhaust solenoid valve 21.

[0039] The control unit 22 can be a microcontroller or PLC controller as available in the prior art, and can be selected according to actual needs. The configuration of the control unit 22 facilitates the realization of remote automatic control by this utility model.

[0040] To facilitate the detection of hydrogen concentration and adjust the nitrogen input accordingly, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that it also includes a hydrogen concentration detector 23. The hydrogen concentration detector 23 is installed in the one-step electrolysis system and is used to detect the hydrogen concentration in the one-step electrolysis system. The hydrogen concentration detector 23 is electrically connected to the control unit 22.

[0041] The hydrogen concentration detector 23 can be a hydrogen concentration detector from the prior art. The hydrogen concentration detector 23 is set up to facilitate the detection of hydrogen concentration in the one-step electrolysis system, thereby facilitating the adjustment of nitrogen input based on hydrogen concentration.

[0042] To remind operators, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that it also includes an audible and visual alarm unit 24, which is electrically connected to the control unit 22.

[0043] The audible and visual alarm unit 24 can be a conventional audible and visual alarm device. The audible and visual alarm unit 24 is designed to easily alert operators. Specifically, the audible and visual alarm unit 24 will issue an audible and visual alarm when the hydrogen concentration detector 23 detects excessive hydrogen levels and when the pressure gauge 19 detects excessive pressure in the pipeline.

[0044] To facilitate the installation of the nitrogen filling device body 10, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the installation component 11 includes a mounting top plate 25, a mounting bottom plate 26, a scissor lift structure 27, and three mounting structures 28. The mounting top plate 25 is located above the mounting bottom plate 26, and the scissor lift structure 27 is located between the mounting top plate 25 and the mounting bottom plate 26 to adjust the height of the mounting top plate 25. The three mounting structures 28 are fitted onto the mounting top plate 25 and are detachably connected to the mounting top plate 25. The air inlet pipe 12, the connecting pipe 13, and the air outlet pipe 14 are respectively installed on the three mounting structures 28 and are detachably connected to the mounting structures 28.

[0045] The mounting structure 28 includes a fixed base 29 and an arc-shaped fixing piece 30. The arc-shaped fixing piece 30 is located on the top of the fixed base 29 and is detachably connected to the fixed base 29 by bolts. A fixing groove 31 is provided between the fixed base 29 and the arc-shaped fixing piece 30. The air inlet pipe 12, the connecting pipe 13, and the air outlet pipe 14 are respectively installed in the fixing grooves 31 of the three mounting structures 28. The mounting top plate 25 is provided with straight slots 32 that cooperate with the fixed bases 29 in the three mounting structures 28. The fixed bases 29 in the three mounting structures 28 are detachably connected to the straight slots 32 on the mounting top plate 25 by bolts.

[0046] The mounting structure 28 consists of a mounting base 29, an arc-shaped fixing plate 30, and bolts. Its core principle is to form a fixed space for adapting to the pipeline through a detachable connection: after the arc-shaped fixing plate 30 and the mounting base 29 are locked together with bolts, the fixing groove 31 between them can wrap around the air inlet pipe 12, the connecting pipe 13, or the air outlet pipe 14, and the pipeline is rigidly fixed by the preload of the bolts. The straight groove 32 on the mounting top plate 25 provides an adjustable mounting track for the mounting base 29. When the mounting base 29 is connected to the straight groove 32 with bolts, its position can be adjusted along the length of the groove before being locked. When there is a lateral deviation in the position of the nitrogen inlet of the one-step electrolysis system, or when the pipeline connection needs to be finely adjusted, the mounting base 29 can be quickly adapted by sliding, without the need to re-drill holes or modify the mounting top plate 25, reducing the stringent requirements for installation space and adapting to the site layout requirements under different working conditions.

[0047] To further facilitate the installation of the nitrogen filling device body 10, this embodiment is an improvement on the above embodiment. The difference from the above embodiment is that the scissor lift structure 27 includes a scissor structure 33 and a drive structure 34. One end of the scissor structure 33 is rotatably connected to the mounting top plate 25 and the mounting bottom plate 26 respectively, and the other end of the scissor structure 33 is slidably connected to the mounting top plate 25 and the mounting bottom plate 26 respectively through a sliding component 35. The scissor structure 33 is rotatably connected to the sliding component 35. The drive structure 34 is set on the mounting bottom plate 26 and is configured to cooperate with the scissor structure 33 for driving the scissor structure 33.

[0048] The mounting top plate 25 and the mounting bottom plate 26 are each provided with a pair of rotating connecting seats 36. The pair of rotating connecting seats 36 on the mounting top plate 25 are respectively located on one side of the bottom of the mounting top plate 25 and are detachably connected to the mounting top plate 25 by bolts. The pair of rotating connecting seats 36 on the mounting bottom plate 26 are respectively located on one side of the top of the mounting bottom plate 26 and are detachably connected to the mounting bottom plate 26 by bolts. The upper end of one side of the scissor structure 33 is rotatably connected to the pair of rotating connecting seats 36 on the mounting top plate 25, and the lower end of one side of the scissor structure 33 is rotatably connected to the pair of rotating connecting seats 36 on the mounting bottom plate 26.

[0049] The sliding assembly 35 includes a pair of sliding connectors 37, which are respectively disposed on the mounting top plate 25 and the mounting bottom plate 26. Each sliding connector 37 includes a connecting cross plate 38, a pair of rotating mounting seats 39, a pair of slide rails 40, and a pair of sliding blocks 41. The pair of slide rails 40 disposed on the mounting top plate 25 are detachably connected to one side of the bottom of the mounting top plate 25 by bolts. The pair of slide rails 40 disposed on the mounting bottom plate 26 are detachably connected to one side of the top of the mounting bottom plate 26 by bolts. The pair of sliding blocks 41 are respectively connected to... A pair of slide rails 40 are slidably connected. One side of the connecting horizontal plate 38 is detachably connected to a pair of sliding blocks 41 by bolts. A pair of rotating mounting seats 39 are respectively disposed on the other side of the connecting horizontal plate 38 and are detachably connected to the connecting horizontal plate 38 by bolts. The upper end of the other side of the scissor structure 33 is rotatably connected to a pair of rotating mounting seats 39 in the sliding connector 37 disposed at the bottom of the mounting top plate 25. The lower end of the other side of the scissor structure 33 is rotatably connected to a pair of rotating mounting seats 39 in the sliding connector 37 disposed at the top of the mounting base plate 26.

[0050] The drive structure 34 includes a fixed threaded block 42, a threaded rod 43, a rotating handle 44, and a pair of screw mounting seats 45. The fixed threaded block 42 is fixedly mounted on the connecting horizontal plate 38 of the sliding connector 37 located on the mounting base plate 26. The pair of screw mounting seats 45 are mounted on the mounting base plate 26 and are detachably connected to the mounting base plate 26 by bolts. The pair of screw mounting seats 45 are located on both sides of the connecting horizontal plate 38 of the sliding connector 37 located on the mounting base plate 26. The threaded rod 43 is located between the pair of screw mounting seats 45. Both ends of the threaded rod 43 pass through the pair of screw mounting seats 45 and are rotatably connected to the pair of screw mounting seats 45. The threaded rod 43 passes through the fixed threaded block 42 and is threadedly connected to the fixed threaded block 42. The rotating handle 44 is fixedly mounted at one end of the threaded rod 43.

[0051] In the scissor lift structure 27, a pair of rotating connecting seats 36 are provided on the bottom side of the mounting top plate 25 and the top side of the mounting base plate 26. These rotating connecting seats 36 are connected to the mounting top plate 25 and the mounting base plate 26 by bolts to form a stable and detachable connection. When the upper end of one side of the scissor lift structure 33 is rotated with the rotating connecting seat 36 on the mounting top plate 25 and the lower end is rotated with the rotating connecting seat 36 on the mounting base plate 26, a reliable fixed rotation fulcrum is provided for the scissor lift structure 33. The fixed rotation fulcrum remains unchanged in position during the movement of the scissor lift structure 33, providing a solid support foundation for the overall structure.

[0052] The sliding assembly 35 includes a pair of sliding connectors 37, respectively mounted on the top mounting plate 25 and the bottom mounting plate 26. A pair of slide rails 40 are bolted to one side of the bottom of the top mounting plate 25 and one side of the top mounting plate 26. The extension direction of the slide rails 40 matches the extension direction of the scissor structure 33. A pair of sliding blocks 41 are respectively engaged with the corresponding slide rails 40, allowing them to slide smoothly along the length of the slide rails 40. One side of each sliding block 41 is firmly connected to the connecting horizontal plate 38 by bolts, enabling the connecting horizontal plate 38 to move synchronously. A pair of rotating mounting seats 39 are bolted to the other side of the connecting horizontal plate 38. When the upper end of the other side of the scissor structure 33 is rotatably connected to the rotating mounting seats 39 in the bottom sliding connector 37 of the top mounting plate 25, and the lower end is rotatably connected to the rotating mounting seats 39 in the top sliding connector 37 of the bottom mounting plate 25, a movable rotation fulcrum is formed on the other side of the scissor structure 33. When the sliding blocks 41 move along the slide rails 40, the scissor structure 33 can flexibly adjust its angle.

[0053] In the drive structure 34, a pair of screw mounting seats 45 are fixed to the mounting base plate 26 by bolts, and are respectively located on both sides of the connecting horizontal plate 38 in the sliding connector 37 on the mounting base plate 26. The two ends of the threaded rotating rod 43 pass through the pair of screw mounting seats 45 and form a rotatable connection with the screw mounting seats 45 to ensure that the threaded rotating rod 43 can rotate stably. The fixed thread block 42 is welded or fixed to the connecting horizontal plate 38 of the sliding connector 37 on the mounting base plate 26 by bolts, and is threadedly connected to the threaded rotating rod 43. A rotating handle 44 is fixedly installed at one end of the threaded rotating rod 43. When the handle 44 is turned, the threaded rod 43 rotates accordingly. Through threaded engagement with the fixed threaded block 42, the rotational motion is converted into linear motion of the fixed threaded block 42, which in turn pushes the connecting horizontal plate 38 and the sliding block 41 to move along the slide rail 40, causing the scissor structure 33 to unfold or fold, thereby realizing the raising or lowering of the mounting top plate 25, and finally driving the raising and lowering of the nitrogen filling device body 10 to adapt to the nitrogen inlet position of the one-step electrolysis system at different heights.

[0054] The detachable bolt design of the rotating connecting seat 36 not only ensures the stability of the connection with the scissor lift structure 33, but also facilitates individual disassembly and replacement when it is worn or damaged, making maintenance easy. The slide rail 40 and sliding block 41 of the sliding component 35 are precisely matched to ensure the smoothness of the sliding process and provide precise guidance for the movement of the scissor lift structure 33. The detachable connection of each component also facilitates modular maintenance. The drive structure 34 uses threaded transmission to achieve high-precision height adjustment. At the same time, the self-locking characteristic of the thread prevents the mounting top plate 25 from moving accidentally, ensuring safety. The manual rotation handle 44 is easy to operate, requires no external power, and has strong structural reliability. Overall, through the synergistic effect of the fixed fulcrum, the movable fulcrum, and the driving force, the scissor lift structure 27 has the significant characteristics of flexible height adjustment, structural stability, and strong modular maintainability, which further facilitates the installation of the nitrogen filling device body 10.

[0055] Working principle of this utility model:

[0056] In use, this utility model can be remotely opened by opening the input solenoid valve 18 to allow nitrogen from the nitrogen source to enter through the input pipe 17. The pressure is then monitored by the pressure gauge 19, regulated by the flow regulating valve 15, and monitored by the flow meter 16. The nitrogen is then injected into the one-step electrolysis system through the outlet pipe 14 to dilute the concentration of hydrogen generated during the start-up and shutdown phases of the one-step electrolysis system. After the nitrogen filling is completed, the input solenoid valve 18 is closed, thus completing the nitrogen filling process.

[0057] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic nitrogen filling device, characterized in that, The device includes a nitrogen charging unit body (10) and an installation assembly (11). The nitrogen charging unit body (10) is mounted on the installation assembly (11). The nitrogen charging unit body (10) includes an inlet pipe (12), a connecting pipe (13), an outlet pipe (14), a flow regulating valve (15), and a flow meter (16). One end of the inlet pipe (12) is provided with an input pipe (17). One end of the input pipe (17) is connected to the inlet pipe (12), and the other end is connected to a nitrogen source. An input solenoid valve (18) and a pressure gauge (19) are sequentially provided on the input pipe (17) along the nitrogen flow direction. And an exhaust pipe (20), one end of the exhaust pipe (20) is connected to the input pipe (17), and the other end is connected to the nitrogen recovery equipment. An exhaust solenoid valve (21) is provided on the exhaust pipe (20). The other end of the inlet pipe (12) is connected to one end of the flow regulating valve (15). The other end of the flow regulating valve (15) is connected to one end of the connecting pipe (13). The other end of the connecting pipe (13) is connected to one end of the flow meter (16). The other end of the flow meter (16) is connected to one end of the outlet pipe (14). The other end of the outlet pipe (14) is connected to the nitrogen input port in the one-step electrolysis system.

2. The automatic nitrogen filling device according to claim 1, characterized in that, It also includes a control unit (22), and the flow regulating valve (15), flow meter (16), input solenoid valve (18), pressure gauge (19) and exhaust solenoid valve (21) are electrically connected to the control unit (22). The control unit (22) is used to control the flow regulating valve (15), flow meter (16), input solenoid valve (18), pressure gauge (19) and exhaust solenoid valve (21).

3. The automatic nitrogen filling device according to claim 2, characterized in that, It also includes a hydrogen concentration detector (23), which is installed in the one-step electrolysis system to detect the hydrogen concentration in the one-step electrolysis system. The hydrogen concentration detector (23) is electrically connected to the control unit (22).

4. An automatic nitrogen filling device according to claim 3, characterized in that, It also includes an audible and visual alarm unit (24), which is electrically connected to the control unit (22).

5. An automatic nitrogen filling device according to claim 1 or 4, characterized in that, The mounting assembly (11) includes a mounting top plate (25), a mounting base plate (26), a scissor lift structure (27), and three mounting structures (28). The mounting top plate (25) is positioned above the mounting base plate (26), and the scissor lift structure (27) is positioned between the mounting top plate (25) and the mounting base plate (26) to adjust the height of the mounting top plate (25). The three mounting structures (28) are fitted onto the mounting top plate (25) and are detachably connected to the mounting top plate (25). The air intake pipe (12), the connecting pipe (13), and the air outlet pipe (14) are respectively positioned on the three mounting structures (28) and are detachably connected to the mounting structures (28).

6. An automatic nitrogen filling device according to claim 5, characterized in that, The mounting structure (28) includes a fixed base (29) and an arc-shaped fixing plate (30). The arc-shaped fixing plate (30) is set on the top of the fixed base (29) and is detachably connected to the fixed base (29) by bolts. A fixing groove (31) is provided between the fixed base (29) and the arc-shaped fixing plate (30). The air inlet pipe (12), the connecting pipe (13) and the air outlet pipe (14) are respectively installed in the fixing grooves (31) of the three mounting structures (28). The mounting top plate (25) is provided with straight slots (32) that cooperate with the fixed bases (29) in the three mounting structures (28). The fixed bases (29) in the three mounting structures (28) are detachably connected to the straight slots (32) on the mounting top plate (25) by bolts.

7. An automatic nitrogen filling device according to claim 6, characterized in that, The scissor lift structure (27) includes a scissor structure (33) and a drive structure (34). One end of the scissor structure (33) is rotatably connected to the mounting top plate (25) and the mounting base plate (26) respectively. The other end of the scissor structure (33) is slidably connected to the mounting top plate (25) and the mounting base plate (26) respectively through a sliding component (35). The scissor structure (33) is rotatably connected to the sliding component (35). The drive structure (34) is set on the mounting base plate (26) and is configured in conjunction with the scissor structure (33) to drive the scissor structure (33).

8. An automatic nitrogen filling device according to claim 7, characterized in that, A pair of rotating connecting seats (36) are provided on the mounting top plate (25) and the mounting bottom plate (26). The pair of rotating connecting seats (36) on the mounting top plate (25) are respectively located on one side of the bottom of the mounting top plate (25) and are detachably connected to the mounting top plate (25) by bolts. The pair of rotating connecting seats (36) on the mounting bottom plate (26) are respectively located on one side of the top of the mounting bottom plate (26) and are detachably connected to the mounting bottom plate (26) by bolts. The upper end of one side of the scissor structure (33) is rotatably connected to the pair of rotating connecting seats (36) on the mounting top plate (25), and the lower end of one side of the scissor structure (33) is rotatably connected to the pair of rotating connecting seats (36) on the mounting bottom plate (26).

9. An automatic nitrogen filling device according to claim 8, characterized in that, The sliding assembly (35) includes a pair of sliding connectors (37), which are respectively disposed on the mounting top plate (25) and the mounting bottom plate (26). Each sliding connector (37) includes a connecting cross plate (38), a pair of rotating mounting seats (39), a pair of slide rails (40), and a pair of sliding blocks (41). The pair of slide rails (40) disposed on the mounting top plate (25) are detachably connected to one side of the bottom of the mounting top plate (25) by bolts, and the pair of slide rails (40) disposed on the mounting bottom plate (26) are detachably connected to one side of the top of the mounting bottom plate (26) by bolts. The pair of sliding blocks (41) Each of the two slide rails (40) is slidably connected to one side of the connecting horizontal plate (38) and is detachably connected to one side of the sliding block (41) by bolts. A pair of rotating mounting seats (39) are respectively set on the other side of the connecting horizontal plate (38) and are detachably connected to the connecting horizontal plate (38) by bolts. The upper end of the other side of the scissor structure (33) is rotatably connected to a pair of rotating mounting seats (39) in the sliding connector (37) at the bottom of the mounting top plate (25). The lower end of the other side of the scissor structure (33) is rotatably connected to a pair of rotating mounting seats (39) in the sliding connector (37) at the top of the mounting base plate (26).

10. An automatic nitrogen filling device according to claim 9, characterized in that, The drive structure (34) includes a fixed threaded block (42), a threaded rod (43), a rotating handle (44), and a pair of screw mounting seats (45). The fixed threaded block (42) is fixedly mounted on the connecting cross plate (38) of the sliding connector (37) located on the mounting base plate (26). The pair of screw mounting seats (45) are mounted on the mounting base plate (26) and are detachably connected to the mounting base plate (26) by bolts. The pair of screw mounting seats (45) are respectively located on the mounting base plate. On both sides of the connecting horizontal plate (38) in the sliding connector (37) on the plate (26), the threaded rotating rod (43) is set between a pair of screw mounting seats (45). The two ends of the threaded rotating rod (43) pass through a pair of screw mounting seats (45) respectively and are rotatably connected to a pair of screw mounting seats (45). The threaded rotating rod (43) passes through a fixed threaded block (42) and is threadedly connected to the fixed threaded block (42). The rotating handle (44) is fixedly set at one end of the threaded rotating rod (43).

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