Adjustable self-adaptive hydrogen cylinder group grounding device

Abstract

The utility model discloses an adjustable self-adaptive hydrogen cylinder group grounding device, which comprises a grounding wire net and an adjustable grounding wire, and is characterized in that the grounding wire net is composed of grounding flat iron and is distributed around the periphery of a hydrogen cylinder group; the adjustable grounding wire is an elastic telescopic wire and two ends of the adjustable grounding wire are provided with adaptive connecting devices; one end of the adjustable grounding wire is connected with the bracket of the hydrogen cylinder group, the other end of the adjustable grounding wire is connected with the grounding flat iron, and each group of hydrogen cylinders can be connected to the nearest grounding flat iron through at least one adjustable grounding wire. According to the adjustable self-adaptive hydrogen cylinder group grounding device provided by the invention, the phenomena that a hydrogen cylinder group grounding wire is too long, the grounding wire is arranged randomly, and the layout is difficult to adjust quickly when the number and the position of the hydrogen cylinder group are changed can be solved, so that the problem of potential safety hazards is avoided.

Description

Technical Field

[0001] This application relates to the field of electrostatic protection, and particularly to an adjustable and adaptive grounding device for hydrogen cylinder groups. Background Art

[0002] In the thermal power generation industry, hydrogen is widely used as an efficient cooling medium. Due to its excellent thermal conductivity and low density, hydrogen has become the preferred choice for cooling generator rotors. However, hydrogen is also an extremely flammable gas with a wide explosion limit (about 4% to 75% by volume concentration). Once leaked and mixed with air to reach the explosion limit, it can cause combustion or explosion when encountering ignition sources such as electrostatic discharge and sparks, posing a serious threat to the safety of personnel and equipment.

[0003] Currently, the sources of hydrogen in the thermal power generation industry are mainly divided into two categories: hydrogen production plants and externally purchased hydrogen cylinder groups. Due to the high risk of hydrogen production plants, externally purchased hydrogen cylinder groups are mostly used in the industry to obtain hydrogen, and these hydrogen cylinder groups are placed in the hydrogen supply stations within the plant. However, the number of grounding points in the existing electrostatic protection system of hydrogen supply stations is limited, resulting in some hydrogen cylinder groups being too far from the nearest grounding point, and long grounding wires are required for connection. The long grounding wires not only increase the resistance of the line and reduce the grounding effect, but also may cause unreliable grounding due to poor contact, wear, etc.; the existing electrostatic protection system of hydrogen supply stations lacks unified planning and standardized management, and the grounding wires of each hydrogen cylinder group are arranged randomly, with the lines intertwined, which not only affects the appearance, but also increases the maintenance difficulty and potential safety hazards; the existing electrostatic protection system of hydrogen supply stations has poor adaptability to the number and layout of hydrogen cylinder groups. When the number of cylinder groups increases or decreases or the position changes, it is difficult to quickly adjust the configuration of the grounding wires, resulting in the electrostatic protection system being unable to match the on-site changes in a timely manner, reducing the overall safety and reliability. Summary of the Invention

[0004] In view of the above problems, this application provides an adjustable and adaptive grounding device for hydrogen cylinder groups, which can solve the problems such as too long grounding wires for hydrogen cylinder groups, random arrangement of grounding wires, and difficulty in quickly adjusting the layout when the number and position of hydrogen cylinder groups change, thereby avoiding potential safety hazards.

[0005] To achieve the objectives of this application, the following technical solutions are provided in this application:

[0006] This application provides an adjustable and adaptive grounding device for hydrogen cylinder groups, including: a grounding wire network and adjustable grounding wires;

[0007] The grounding wire network is composed of grounding flat irons and is distributed around the periphery of the hydrogen cylinder group;

[0008] The adjustable grounding wire is an elastic telescopic wire with adaptable connection devices provided at both ends; one end of the adjustable grounding wire is connected to the bracket of the hydrogen cylinder group, and the other end is connected to the grounding flat iron, and each group of hydrogen cylinders can be connected to the nearest grounding flat iron through at least one adjustable grounding wire.

[0009] In a possible implementation, it further includes: a grounding point; the grounding point is set at a safe position away from the hydrogen cylinder group, and both ends of the grounding flat iron are respectively connected to at least two grounding points.

[0010] In a possible implementation, the grounding flat iron is buried at least 60 centimeters underground.

[0011] In a possible implementation, the adjustable grounding wire is a wire in a spiral spring structure.

[0012] In a possible implementation, the adaptable connection devices at both ends of the adjustable grounding wire are firmly clamped devices.

[0013] In a possible implementation, the layout of the grounding wire network follows the principle of minimum grounding resistance.

[0014] In a possible implementation, the grounding wire network is distributed in a C shape around the periphery of the hydrogen cylinder group.

[0015] In a possible implementation, the hydrogen cylinder group is arranged in two parallel straight rows with a consistent distance between the two rows.

[0016] In a possible implementation, the adjustable grounding wire is yellow-green dual-color.

[0017] Beneficial effects:

[0018] By providing an adjustable and adaptable grounding device for hydrogen cylinder groups in this application, the problems of overly long grounding wires and chaotic layout in the grounding system of hydrogen cylinder groups are effectively solved. It can ensure the formation of the shortest and most direct electrical connection path between each group of hydrogen cylinders and the nearest grounding flat iron under the condition of changes in the number and layout of hydrogen cylinder groups, without complex rewiring, quickly and simply changing the layout, and improving the adaptability and maintainability of the system. Description of the Drawings

[0019] The drawings are used to provide further understanding of this application and form a part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation to this application;

[0020] Figure 1 It is the layout diagram of the grounding device for hydrogen cylinder groups provided by the embodiment of this application;

[0021] Figure 2Schematic structural diagram of the grounding device for the hydrogen cylinder group provided by the embodiment of the present application;

[0022] Reference numerals:

[0023] 1 - Bracket; 2 - Hydrogen cylinder group; 3 - Clip; 4 - Adjustable grounding wire; 5 - Grounding wire mesh; 6 - Grounding point. Detailed implementation manners

[0024] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the accompanying drawings in the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts shall fall within the protection scope of the present application.

[0025] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features; in the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more.

[0026] Embodiment 1

[0027] Figure 1-2 A grounding device for a hydrogen cylinder group provided by the embodiment of the present application includes: a grounding wire mesh 5 and an adjustable grounding wire 4;

[0028] The grounding wire mesh 5 is composed of grounding flat irons, distributed around the periphery of the hydrogen cylinder group 2, collecting static electricity currents from all directions and guiding them to the final grounding point.

[0029] The adjustable grounding wire 4 is an elastic telescopic wire and adaptive connection devices are provided at both ends; one end of the adjustable grounding wire 4 is connected to the bracket 1 of the hydrogen cylinder group, and the other end is connected to the grounding flat iron, and each group of hydrogen cylinders can be connected to the nearest grounding flat iron through at least one adjustable grounding wire 4.

[0030] Specifically, when the number of hydrogen cylinder groups 2 decreases, or the placement position changes, quickly adjust the number, length and position of the adjustable grounding wires 4 so that each group of hydrogen cylinders can be grounded through the shortest path to ensure that each hydrogen cylinder group 2 can be effectively connected to the static electricity protection system.

[0031] In a possible implementation manner, it further includes: a grounding point 6; the grounding point 6 is arranged at a safe position away from the hydrogen cylinder group 2, and both ends of the grounding flat iron are respectively connected to at least two grounding points 6 to form a stable static electricity discharge path.

[0032] Specifically, the selection of the grounding point 6 not only considers the safety distance from the hydrogen cylinder group 2, but also comprehensively takes into account factors such as soil resistivity, terrain conditions, and convenience for daily inspection and maintenance. The grounding point 6 is set in an area with low soil resistivity, easy conductivity, and far from flammable and explosive items to ensure the best grounding effect.

[0033] Specifically, both ends of the grounding flat iron are reliably connected to at least two grounding points 6 by welding. The multi-point grounding method constructs a redundant grounding network. Even if a certain grounding point fails, the current can still be smoothly discharged through other paths, avoiding the failure of the grounding system caused by a single-point fault and greatly improving the stability of the system.

[0034] Optionally, welding can be carried out by electric welding or gas welding. During welding, it should be ensured that the overlapping length is twice the width of the grounding flat iron, and at least three sides are welded to ensure electrical continuity and mechanical strength. After welding, the welded part should be treated with rust prevention, such as applying rust-proof paint or asphalt to prevent metal oxidation; a special grounding resistance tester should also be used to test whether the resistance value between the grounding point and the grounding flat iron is close to zero or within the designed range to ensure that it meets the safety standards.

[0035] In a possible implementation manner, the grounding flat iron is buried at least 60 centimeters underground.

[0036] Specifically, the grounding flat iron will have a joint on the ground to facilitate the connection between the bracket 1 and the grounding flat iron. The grounding flat iron should be kept straight to avoid bending and twisting to ensure good electrical conductivity and mechanical stability.

[0037] In a possible implementation manner, the adjustable grounding wire 4 is a wire with a spiral spring structure.

[0038] Specifically, the spiral spring structure has good flexibility and can adapt to connection requirements at different distances. There is no need to customize cables of specific lengths. Even in the case of vibration or slight displacement, it can maintain good contact pressure, reducing the possibility of changes in contact resistance and thus maintaining stable electrical performance.

[0039] In a possible implementation manner, the adaptive connection devices at both ends of the adjustable grounding wire 4 are firmly clamped devices.

[0040] Optionally, the clamping device is a clip 3.

[0041] Specifically, the clip 3 can adapt to connection objects with different diameters and shapes. The interior or contact surface of the clip 3 adopts anti-slip textures or coatings, such as rubber gaskets, tooth pattern designs, etc., to increase friction. Even in a humid or oily environment, it can maintain good gripping force to ensure the continuity and reliability of electrical contact.

[0042] In a possible implementation manner, the grounding wire network 5 is arranged following the principle of minimum grounding resistance.

[0043] Specifically, select areas with lower soil resistivity, burial depth and spacing to achieve optimal current dispersion and diversion effects; design the grounding wire network 5 into a circular or grid layout to promote uniform current distribution and avoid current concentration at a certain point; use highly conductive and corrosion-resistant materials, such as copper or galvanized steel, to make the grounding flat iron to ensure long-term low-resistance connection; adopt the method of direct welding connection to reduce the grounding resistance and ensure the electrical continuity and mechanical strength of all connection points.

[0044] In a possible implementation manner, the grounding wire network 5 is distributed in a C shape around the periphery of the hydrogen cylinder group 2.

[0045] Optionally, the layout of the grounding wire network 5 is set according to the layout of the hydrogen cylinder group 2, and it can be a circular, radial or grid layout. By increasing the density and coverage of the grounding wires, the electrostatic discharge efficiency and reliability are improved.

[0046] In a possible implementation manner, the hydrogen cylinder group 2 is arranged in two parallel straight rows with a consistent distance between the two rows.

[0047] Specifically, each row of the hydrogen cylinder group 2 is fixed by an accurate positioning bracket 1 to ensure that the longitudinal and lateral spacings between the cylinder groups are uniform. This not only meets the optimized safety interval requirements to prevent potential heat transfer risks and physical collisions, but also facilitates the passage width for operators to conduct inspections and maintenance. The arrangement described in this application also reserves room for adjustment, and the cylinder group spacing can be finely adjusted by adjusting the bracket 1 to adapt to the space limitations of a specific site or future possible expansion needs.

[0048] Optionally, the hydrogen cylinder group 2 can also be arranged in a matrix, circular or distributed manner.

[0049] In a possible implementation manner, the adjustable grounding wire 4 is yellow-green dual-color. Specifically, the yellow-green dual-color is usually composed of yellow and green stripes or spots to ensure that even in the case of wear or aging, part of the color is still visible, thus maintaining its identification function.

[0050] The beneficial effects of adopting the embodiments of this application are as follows:

[0051] The grounding device for the hydrogen cylinder group in the present application can quickly adapt when facing changes in the number of hydrogen cylinder groups or layout adjustments by setting adjustable ground wires and the layout of the ground wire network. There is no need to painstakingly redeploy the ground wires, ensuring the formation of the shortest and most direct electrical connection path between each group of hydrogen cylinders and the nearest grounding flat iron, eliminating the visual clutter and potential electrical risks caused by random arrangement, improving the on-site management efficiency and safety, and fundamentally solving the problems of increased resistance and safety hazards caused by overly long ground wires in traditional arrangements.

[0052] In several embodiments provided by the present application, it should be understood that the disclosed systems, modules, and methods can be implemented in other ways. For example, the module embodiments described above are merely illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces, indirect coupling or communication connection of modules or units, and can be in electrical, mechanical, or other forms.

[0053] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them. The present application is not limited to the exact structures already described and illustrated in the drawings, and it cannot be determined that the specific implementation of the present application is only limited to these descriptions. For those of ordinary skill in the technical field to which the present application belongs, without departing from the concept of the present application, various changes and deformations made should be regarded as belonging to the protection scope of the present application.

Claims

1. An adjustable and adaptive hydrogen cylinder group grounding device, characterized in that: include: Grounding wire network, adjustable grounding wire; The grounding wire network is composed of grounding flat irons and is distributed around the periphery of the hydrogen cylinder group; The adjustable grounding wire is an elastic and retractable conductor with adaptive connecting devices at both ends; one end of the adjustable grounding wire is connected to the bracket of the hydrogen cylinder group, and the other end is connected to the grounding flat iron, and each group of hydrogen cylinders can be connected to the nearest grounding flat iron through at least one adjustable grounding wire.

2. The grounding device according to claim 1, characterized in that: Also includes: Grounding point; The grounding point is arranged at a safe position away from the hydrogen cylinder group, and both ends of the grounding flat iron are respectively connected to at least two grounding points.

3. The grounding device according to claim 2, characterized in that: The grounding flat iron is buried at least 60 cm underground.

4. The grounding device according to claim 1, characterized in that: The adjustable grounding wire is a wire with a spiral spring structure.

5. The grounding device according to claim 4, characterized in that: The adaptive connection devices at both ends of the adjustable grounding wire are clamping devices.

6. The grounding device according to claim 1, characterized in that: The grounding wire network layout follows the principle of minimum grounding resistance.

7. The grounding device according to claim 1, characterized in that: The grounding wire network is distributed in a C shape around the periphery of the hydrogen cylinder group.

8. The grounding device according to claim 1, characterized in that: The hydrogen cylinder group is arranged in two parallel straight rows, with a consistent distance between the two rows.

9. The grounding device according to claim 1, characterized in that: The adjustable grounding wire is yellow and green.

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