Inert gas monitoring device for subway strong magnetic environment

Abstract

The utility model discloses a kind of inert gas monitoring devices for subway strong magnetic environment belongs to strong magnetic environment gas monitoring device technical field.The inert gas monitoring device includes control module, control module is provided with sensor;Shell, control module is installed in shell, the outer periphery of shell is covered with plating layer, plating layer is metal plating layer, make shell form faraday cage, faraday cage is hollow structure.The inert gas monitoring device is set by metal plating layer in the outer periphery of shell, make shell form faraday cage, to be able to shield induced electromagnetic field in machine room, guarantee sensor and control module can normally operate, so that the inert gas monitoring device can accurately collect the concentration of inert gas.When the concentration of inert gas is monitored to reach certain condition, control center will issue early warning, prevent staff from entering machine room under the condition that inert gas concentration is relatively high, avoid the health of staff is affected.

Description

Technical Field

[0001] This utility model relates to an inert gas monitoring device for use in strong magnetic environments in subways, and belongs to the technical field of strong magnetic environment gas monitoring devices. Background Technology

[0002] With the rapid development of urban transportation, subways are playing an increasingly important role. Subways are electrified railways, and the cables along the subway line are collected and centrally controlled in power control rooms, which house high-current distribution cabinets and other electrical equipment. Currently, to ensure electrical safety, inert gases are often used to protect the switches, connectors, and other components within the power cabinets. Subway power control rooms are mostly built underground, and ventilation is limited to localized ventilation by fans, making it impossible to achieve fresh air intake. Furthermore, these power control rooms require regular inspections, and opening the cabinet doors during inspections causes gases to diffuse out, leading to a decrease in the concentration of inert gases within the cabinets. Moreover, if the concentration reaches a certain level, it can also affect the health of the inspection personnel. While existing inert gas monitoring devices can detect the concentration of inert gases in the cabinets, the large currents flowing through the cables in the subway tunnels and the alternating electromagnetic fields generated by these currents can affect electronic components, causing them to malfunction or malfunction, resulting in inaccurate monitoring of the inert gas concentration within the cabinets. Utility Model Content

[0003] This invention provides an inert gas monitoring device for use in strong magnetic environments in subways, in order to solve the problem that when cables in subway tunnels carry large currents, the alternating current generates an alternating electromagnetic field nearby. Under the influence of the electromagnetic field, electronic devices are affected, causing them to malfunction or malfunction, resulting in inaccurate monitoring of the inert gas concentration in the cabinet.

[0004] This utility model is achieved through the following technical solution:

[0005] This utility model provides an inert gas monitoring device for use in strong magnetic environments in subways, including...

[0006] The control module is equipped with sensors;

[0007] The control module is installed inside the housing. The outer periphery of the housing is covered with a plating layer, which is a metal plating layer, so that the housing forms a Faraday cage, and the Faraday cage is a hollow structure.

[0008] In one embodiment of this utility model, the outer shell includes an outer shell body and holes. There are multiple holes, which are evenly distributed on the outer shell body. The plating layer covers the outer side of the outer shell body, and the holes penetrate the plating layer and the outer shell body.

[0009] In one embodiment of this invention, the thickness of the coating is at least 2 mm to ensure that electromagnetic waves can be shielded.

[0010] In one embodiment of this utility model, the diameter of the hole does not exceed 1 mm.

[0011] In one embodiment of this invention, the mesh size of the holes within a unit area of ​​the outer casing does not exceed 100 meshes. This allows the outer casing to achieve a better electromagnetic shielding effect.

[0012] In one embodiment of this utility model, the control module includes a power supply module, a communication module, and a signal processing module. The power supply module is connected to the communication module, the signal processing module, and the sensor, respectively. The communication module is connected to the signal processing module, and the sensor is connected to the signal processing module. The power supply module provides power to the entire inert gas monitoring device. The sensor can monitor the inert gas concentration in the computer room and cabinet and convert it into an electrical signal. After receiving the electrical signal from the sensor, the signal processing module processes and converts the received electrical signal and transmits it to the control center through the communication module. The control center converts the received information into an inert gas concentration value for display.

[0013] In one embodiment of this invention, the plating layer is a copper-iron plating layer. Utilizing the strong magnetic conductivity of iron and the strong electrical conductivity of copper, the outer shell forms a Faraday cage. This protects against both alternating electric and magnetic fields, ensuring that the inert gas monitoring device is not affected by the magnetic and electric fields within the subway machine room, allowing it to operate normally, collect accurate data, and correctly transmit the data to the control center, thus achieving real-time monitoring of the inert gas concentration in the machine room and cabinets.

[0014] In one embodiment of this invention, a bracket is included, which is mounted on one side of the housing. This bracket enables the inert gas monitoring device to be fixed in the computer room and cabinet, while also providing support for the entire inert gas monitoring device.

[0015] In one embodiment of this utility model, an exhaust vent is included, and the housing is mounted on one side of the exhaust vent via a bracket. The exhaust vent typically has good accessibility and operating space, facilitating maintenance personnel to perform regular maintenance, calibration, and testing of the monitoring device.

[0016] In one embodiment of this utility model, the bracket is a stainless steel threaded cylinder.

[0017] Beneficial effects

[0018] The inert gas monitoring device provided by this utility model features an outer shell around the sensor, with a metal coating of at least 2mm thickness on its outer periphery. This shell forms a Faraday cage, effectively shielding the induced electromagnetic field within the equipment room. This ensures the normal operation of the sensor and control module, enabling the device to accurately detect the concentration of inert gas. Upon receiving information from the monitoring device, the control center issues an alert when the inert gas concentration reaches a certain level, preventing personnel from entering the equipment room in high inert gas concentrations and avoiding any health risks. Attached Figure Description

[0019] Figure 1 Front view of the inert gas monitoring device provided by this utility model;

[0020] Figure 2 A cross-sectional view of the inert gas monitoring device provided by this utility model;

[0021] Figure 3 A schematic diagram of the installation of the inert gas monitoring device provided by this utility model;

[0022] In the picture:

[0023] 1. Control module; 11. Power supply module; 12. Communication module; 13. Signal processing module; 14. Sensor; 2. Housing; 21. Plating; 22. Hole; 23. Housing body; 3. Bracket; 4. Vent; 5. Computer room; 6. Cabinet. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 based on the specific circumstances.

[0026] In this 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 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 directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] like Figures 1 to 3 As shown in the figure, this application provides an inert gas monitoring device for use in a strong magnetic environment in a subway. This device is unaffected by the strong magnetic field inside the subway and can accurately monitor the concentration of inert gas inside the cabinet.

[0028] In some embodiments, the inert gas monitoring device includes a control module 1, a housing 2, and a bracket 3. The control module 1 is installed inside the housing 2, and the bracket 3 is provided on one side of the housing 2. The inert gas monitoring device is installed near the exhaust vent 4 of the computer room 5 and the cabinet 6 via the bracket 3. The bracket 3 can be connected to the computer room 5 and the cabinet 6 in various ways, such as by using a mounting plate. The exhaust vent 4 usually has good accessibility and operating space, facilitating maintenance personnel to perform regular maintenance, calibration, and testing of the monitoring device.

[0029] In some embodiments, the control module 1 includes a power supply module 11, a communication module 12, a signal processing module 13, and a sensor 14. The power supply module 11 is connected to the communication module 12, the signal processing module 13, and the sensor 14, providing power to the entire inert gas monitoring device. The communication module 12 is connected to the signal processing module 13, and the signal processing module 13 is connected to the sensor 14. The sensor 14 can monitor the inert gas concentration in the computer room 5 and the cabinet 6 and convert it into an electrical signal. After receiving the electrical signal from the sensor 14, the signal processing module 13 processes and converts the received electrical signal and transmits it to the control center through the communication module 12. The control center converts the received information into an inert gas concentration value for display.

[0030] In some embodiments, the outer casing 2 is a cylindrical structure that can cover the outside of the control module 1. The outer casing 2 includes a plating layer 21, holes 22, and a casing body 23. The plating layer 21 wraps around the outer periphery of the casing body 23 and fully covers the outer side of the casing body. The thickness of the plating layer 21 should be no less than 2 mm to ensure that electromagnetic waves can be shielded. The holes 22 penetrate the plating layer 21 and the casing body 23, and multiple holes 22 are evenly arranged on the outer casing 2 to facilitate the diffusion of inert gas in the computer room 5 and the cabinet 6 into the outer casing 2, so that the sensor 14 can accurately monitor the concentration of inert gas in the computer room 5 and the cabinet 6. The size of the holes 22 should be much smaller than the wavelength of electromagnetic waves to ensure the electromagnetic shielding effect of the outer casing 2.

[0031] Specifically, in this embodiment, since the current in the power room 5 in my country is mainly the domestic 50Hz power frequency and the 20th harmonic, i.e. 50Hz*20=1000Hz, the aperture of hole 22 should not exceed 1mm, and the mesh number of holes per unit area should not exceed 100 meshes in order to achieve the effect of electromagnetic shielding.

[0032] Optionally, the plating layer 21 is made of metal. Specifically, in this embodiment, the plating layer 21 is made of copper and iron, with a 2mm thick copper and iron layer plated on the outer periphery of the outer casing 23. Simultaneously, a lead wire is provided for proper grounding. Utilizing the strong magnetic conductivity of iron and the strong electrical conductivity of copper, the outer casing 2 forms a Faraday cage. This protects against both alternating electric and magnetic fields, ensuring that the inert gas monitoring device is not affected by magnetic and electric fields within the subway machine room, allowing it to operate normally, collect accurate data, and correctly transmit the data to the control center, achieving real-time monitoring of the inert gas concentration in the machine room 5 and cabinet 6. When the inert gas concentration is too high, the equipment issues an early warning to prevent personnel from entering the machine room 5 when the inert gas concentration is high, thus avoiding harm to their health.

[0033] Optionally, the bracket 3 is a stainless steel threaded cylinder that can fix the inert gas monitoring device on the computer room 5 and the cabinet 6, and at the same time provide support for the entire inert gas monitoring device.

[0034] Optionally, sensor 14 is a gas concentration detection sensor capable of detecting the concentration of inert gas in the air.

[0035] In summary, the inert gas monitoring device provided in this application is mainly used in the strong magnetic environment of subways. Subway power equipment rooms have numerous electrified lines carrying large currents, which generate significant induced electromagnetic fields, preventing the inert gas monitoring device from operating normally. The inert gas monitoring device provided in this application addresses this by installing a housing 2 outside the sensor 14 and covering the outer periphery of the housing body 23 with a plating layer 21, forming a Faraday cage that shields the induced electromagnetic field. This ensures the normal operation of the sensor 14 and control module 1, accurately collecting the concentration of inert gas. Holes 22 are also evenly distributed on the housing 2, allowing inert gas in the equipment room 5 and cabinet 6 to diffuse into the housing 2. This enables the sensor 14 to accurately detect the inert gas concentration in the equipment room 5 or cabinet 6, and transmits the detected information to the control center via the signal processing module 13 and communication module 12, achieving real-time monitoring and early warning of inert gas in the equipment room 5 and cabinet 6.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0038] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An inert gas monitoring device for use in strong magnetic environments in subways, characterized in that, include: Control module (1), wherein the control module (1) is equipped with sensor (14); The outer shell (2) is equipped with the control module (1) installed inside the outer shell (2). The outer periphery of the outer shell (2) is covered with a plating layer (21), which is a metal plating layer, so that the outer shell (2) forms a Faraday cage, which is a hollow structure.

2. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 1, characterized in that, The outer casing (2) includes an outer casing body (23) and holes (22). There are multiple holes (22) evenly distributed on the outer casing body (23). The plating layer (21) covers the outside of the outer casing body (23). The holes (22) penetrate the plating layer (21) and the outer casing body (23).

3. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 2, characterized in that, The thickness of the coating (21) is at least 2 mm.

4. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 3, characterized in that, The diameter of the hole (22) does not exceed 1 mm.

5. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 4, characterized in that, The number of meshes in the hole (22) per unit area of ​​the outer shell (2) does not exceed 100 meshes.

6. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 1, characterized in that, The control module (1) includes a power supply module (11), a communication module (12), and a signal processing module (13). The power supply module (11) is connected to the communication module (12), the signal processing module (13), and the sensor (14), respectively. The communication module (12) is connected to the signal processing module (13), and the sensor (14) is connected to the signal processing module (13).

7. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 3, characterized in that, The plating layer (21) is a copper-iron plating layer.

8. An inert gas monitoring device for use in a strong magnetic environment in a subway, as described in any one of claims 1-7, characterized in that, Includes a bracket (3), which is mounted on one side of the housing (2).

9. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 8, characterized in that, Includes an exhaust vent (4), and the housing (2) is mounted on one side of the exhaust vent (4) via a bracket (3).

10. The inert gas monitoring device for a strong magnetic environment in a subway as described in claim 9, characterized in that, The bracket (3) is a stainless steel threaded cylinder.

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