Lightning protection and grounding correlation analysis device
By using grounding and lightning impact sampling modules and multi-channel spectrum analyzer devices in the railway communications computer room, the grounding path continuity and lightning impact problems are monitored and solved, ensuring the safe and stable operation of equipment in the computer room.
Patent Information
- Application Number
- CN202421533985.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Although the grounding path of the railway communications computer room needs to be maintained well in order to vent static charges, this may also lead to the risk of external lightning impact entering the computer room and causing damage.
The continuity of the grounding path and the lightning impact condition are monitored through excitation coils, electromagnetic induction coils and high-frequency current coils.
It realizes synchronous monitoring of grounding path continuity and lightning impact problems, ensuring the safe and stable operation of equipment in the computer room.
Smart Images
Figure CN222825619U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lightning protection, in particular to a lightning protection and grounding correlation analysis device. Background Art
[0002] The railway communication room is a typical weak current room, where all kinds of remote networking equipment in the railway system are concentrated. The room has strict requirements on the grounding status: on the one hand, it is necessary to establish a good grounding path between the equipment in the room and the ground network to ensure the timely discharge of the static charge in the room and avoid the equipment shell being charged; on the other hand, it is necessary to prevent the grounding path from introducing external lightning strikes into the room to ensure the safe and stable operation of all equipment in the room. There is a certain contradiction between the above two requirements, because once a good grounding path is established, the direction of current transmission is not limited by the path itself. Under the action of the potential difference, the external lightning current can smoothly enter the room along the path and cause damage. For this reason, various weak current rooms such as railway communication rooms need to monitor and alarm external lightning strikes while ensuring the smooth grounding path, forming a mechanism for monitoring and analysis of lightning protection and grounding association. Utility Model Content
[0003] The purpose of the utility model is to provide a lightning protection and grounding correlation analysis device to solve the problem that the communication room is well grounded in the prior art, but faces the risk of external lightning strikes being introduced into the room by the grounding path.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A lightning protection and grounding correlation analysis device comprises a grounding and lightning impulse sampling module, an AC power supply, a multi-channel spectrum analyzer and an industrial computer. The grounding and lightning impulse sampling module comprises an excitation coil, a high-frequency current coil and an electromagnetic induction coil. The grounding path of a communication room passes through the excitation coil, the high-frequency current coil and the electromagnetic induction coil. The AC power supply is respectively connected to the excitation coil and the multi-channel spectrum analyzer, the high-frequency current coil and the electromagnetic induction coil are respectively connected to the multi-channel spectrum analyzer, and the multi-channel spectrum analyzer is communicatively connected to the industrial computer.
[0006] By adopting the lightning protection and grounding correlation analysis device described in the present invention, in view of the lightning protection and grounding safety supervision needs of the communication room, the excitation coil, the electromagnetic induction coil, the AC power supply, the multi-channel spectrum analyzer and the industrial computer are used to monitor whether the grounding path is normally conductive, and the high-frequency current coil, the multi-channel spectrum analyzer and the industrial computer are used to monitor whether the grounding path is abnormally struck by lightning. That is, the conductivity monitoring of the grounding path and the monitoring of the lightning strike problem introduced into the grounding path can be performed simultaneously, thereby consolidating and improving the ability of various equipment in the room to operate safely and stably.
[0007] As a preferred technical solution of the utility model, the excitation coil includes a first input end, the AC power supply includes a first output end, and the first output end is connected to the first input end.
[0008] As a preferred technical solution of the utility model, the multi-channel spectrum analyzer includes a second input terminal, the AC power supply includes a second output terminal, and the second output terminal is connected to the second input terminal.
[0009] As a preferred technical solution of the present utility model, the multi-channel spectrum analyzer includes a third input terminal, the high-frequency current coil includes a third output terminal, and the third output terminal is connected to the third input terminal.
[0010] As a preferred technical solution of the utility model, the multi-channel spectrum analyzer includes a fourth input terminal, the electromagnetic induction coil includes a fourth output terminal, and the fourth output terminal is connected to the fourth input terminal.
[0011] As a preferred technical solution of the utility model, the high-frequency current coil includes a primary winding and a secondary winding.
[0012] As a preferred technical solution of the utility model, the electromagnetic induction coil includes an iron core, a primary winding and a secondary winding.
[0013] As a preferred technical solution of the present utility model, the AC power supply is a sinusoidal AC power supply.
[0014] As a preferred technical solution of the utility model, the grounding and lightning impulse sampling module includes a packaging box, and the excitation coil, the high-frequency current coil and the electromagnetic induction coil are packaged in the packaging box.
[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0016] The lightning protection and grounding correlation analysis device described in the present invention is aimed at the safety supervision needs of lightning protection and grounding in communication rooms. It monitors whether the grounding path is normally conductive through the excitation coil, the electromagnetic induction coil, the AC power supply, the multi-channel spectrum analyzer and the industrial computer, and monitors whether the grounding path is abnormally struck by lightning through the high-frequency current coil, the multi-channel spectrum analyzer and the industrial computer. That is, the conductivity monitoring of the grounding path and the monitoring of the lightning strike problem introduced into the grounding path can be performed simultaneously, thereby consolidating and improving the ability of various equipment in the room to operate safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the grounding and lightning impulse sampling module;
[0018] Figure 2 This is a schematic diagram of the structure of the lightning protection and grounding correlation analysis device.
[0019] Markings in the figure: 01-grounding path, 1-grounding and lightning impulse sampling module, 11-excitation coil, 111-first input terminal, 12-high-frequency current coil, 121-third output terminal, 13-electromagnetic induction coil, 131-fourth output terminal, 2-AC power supply, 21-first output terminal, 22-second output terminal, 3-multi-channel spectrum analyzer, 31-second input terminal, 32-third input terminal, 33-fourth input terminal, 4-industrial computer. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with test examples and specific implementation methods. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0021] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.
[0022] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.
[0023] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.
[0024] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.
[0025] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.
[0026] In the related art, the railway communication room is a typical weak current machine room, which is a place where various remote networking equipment in the railway system are concentrated. This room has strict requirements on the grounding state: on the one hand, it is necessary to establish a good grounding path between the equipment in the room and the ground grid to ensure timely discharge of the electrostatic charge in the room and avoid charging of the equipment casing; on the other hand, it is necessary to prevent the grounding path from introducing external lightning strike risks into the room to ensure the safe and stable operation of all equipment in the room. There is a certain contradiction between the above two requirements, because once a good grounding path is established, the direction of current transmission is not limited by the path itself. Under the action of the potential difference, external lightning current can smoothly enter the room along the path and cause damage. For this reason, the technical solution of the present application is produced, and the following is combined with Figure 1 to Figure 2 To elaborate.
[0027] Example 1
[0028] like Figure 1 and Figure 2 As shown, a lightning protection and grounding correlation analysis device described in the utility model includes a grounding and lightning impulse sampling module 1, an AC power supply 2, a multi-channel spectrum analyzer 3 and an industrial computer 4.
[0029] like Figure 1 and Figure 2As shown, the grounding and lightning impulse sampling module 1 includes a packaging box, an excitation coil 11, a high-frequency current coil 12 and an electromagnetic induction coil 13. The grounding path 01 of the communication room passes through the excitation coil 11, the high-frequency current coil 12 and the electromagnetic induction coil 13; the excitation coil 11 is used to excite an induced electromotive force on the grounding path 01, thereby generating an induced current, and the excitation coil 11 includes a first input terminal 111; the high-frequency current coil 12 is used to collect the impact current when an external lightning impulse enters along the grounding path 01, and the high-frequency current coil 12 includes a third output terminal 121, a primary winding and a secondary winding; the electromagnetic induction coil 13 is used to detect the induced current excited by the excitation coil 11, and reflects the conductivity of the grounding path 01 through the ratio between the excitation intensity and the induced current intensity. The electromagnetic induction coil 13 includes a fourth output terminal 131, an iron core, a primary winding and a secondary winding; the excitation coil 11, the high-frequency current coil 12 and the electromagnetic induction coil 13 are packaged in the packaging box.
[0030] like Figure 2 As shown, the AC power supply 2 is a sinusoidal AC power supply, and the AC power supply 2 is respectively connected to the excitation coil 11 and the multi-channel spectrum analyzer 3. Specifically, the AC power supply 2 includes a first output terminal 21 and a second output terminal 22, and the first output terminal 21 is connected to the first input terminal 111. The AC power supply 2 provides power for the excitation coil 11. The frequency and amplitude of the current signal output by the AC power supply 2 are adjustable, and a stable output can be maintained.
[0031] like Figure 2 As shown, the multi-channel spectrum analyzer 3 is respectively connected to the high-frequency current coil 12 and the electromagnetic induction coil 13. Specifically, the multi-channel spectrum analyzer 3 includes a second input terminal 31, a third input terminal 32 and a fourth input terminal 33. The second input terminal 31 is connected to the second output terminal 22, the third input terminal 32 is connected to the third output terminal 121, and the fourth input terminal 33 is connected to the fourth output terminal 131. The multi-channel spectrum analyzer 3 is used to receive the current analog signals collected by the high-frequency current coil 12 and the electromagnetic induction coil 13, and output the spectrum data of the current.
[0032] like Figure 2As shown, the industrial computer 4 is communicatively connected to the multi-channel spectrum analyzer 3, and the industrial computer 4 is used to analyze the data output by the AC power supply 2 and the multi-channel spectrum analyzer 3. On the one hand, the intensity of the excitation source signal output by the AC power supply 2 is compared with the intensity of the induced current at the corresponding frequency point to determine the reliability of the grounding path 01 in the communication room; on the other hand, the intensity of the high-frequency current signal is compared with the preset threshold value to determine whether there is an external lightning strike entering the communication room through the grounding path 01.
[0033] The AC power supply 2 injects sinusoidal AC currents of different frequencies and amplitudes into the excitation coil 11, and the excitation coil 11 generates an induced electromagnetic field inside itself, and the induced electromagnetic field couples into the grounding path 01 of the railway communication room, generating an induced electromotive force and an induced current on the grounding path 01. The induced current of the grounding path 01 of the railway communication room generates an induced electromagnetic field in the space around the grounding path 01, and the induced electromagnetic field couples into the electromagnetic induction coil 13, generating an induced current in the electromagnetic induction coil 13, and the induced current enters the multi-channel spectrum analyzer 3 from the fourth output terminal 131 of the electromagnetic induction coil 13.
[0034] The AC power supply 2 injects sinusoidal AC currents of different frequencies and amplitudes into the multi-channel spectrum analyzer 3. The induced current and sinusoidal AC current received by the multi-channel spectrum analyzer 3 are converted into digital signals and enter the industrial computer 4. After completing the comparison and analysis, the industrial computer 4 determines whether the grounding path 01 of the communication room is normally conductive.
[0035] The external lightning impulse current on the grounding path 01 of the communication room is coupled in the high-frequency current coil 12 to generate an induced current, and the induced current enters the multi-channel spectrum analyzer 3 through the third output terminal 121 of the high-frequency current coil 12. The induced current received by the multi-channel spectrum analyzer 3 is converted into a digital signal and enters the industrial computer 4. The industrial computer 4 issues an abnormal alarm according to the preset lightning current intensity alarm threshold value.
[0036] The lightning protection and grounding correlation analysis device described in this embodiment is aimed at the safety supervision requirements of lightning protection and grounding in a communication room. It monitors whether the grounding path 01 is normally conductive through the excitation coil 11, the electromagnetic induction coil 13, the AC power supply 2, the multi-channel spectrum analyzer 3 and the industrial computer 4, and monitors whether the grounding path 01 is abnormally struck by lightning through the high-frequency current coil 12, the multi-channel spectrum analyzer 3 and the industrial computer 4. That is, the conductivity monitoring of the grounding path 01 and the monitoring of the lightning strike problem introduced into the grounding path 01 can be performed simultaneously, thereby consolidating and improving the ability of various equipment in the room to operate safely and stably.
[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A lightning protection and grounding correlation analysis device, characterized in that: The invention comprises a grounding and lightning impulse sampling module (1), an alternating current power supply (2), a multi-channel spectrum analyzer (3) and an industrial computer (4); the grounding and lightning impulse sampling module (1) comprises an excitation coil (11), a high-frequency current coil (12) and an electromagnetic induction coil (13); a grounding path (01) of a communication room passes through the excitation coil (11), the high-frequency current coil (12) and the electromagnetic induction coil (13); the alternating current power supply (2) is respectively connected to the excitation coil (11) and the multi-channel spectrum analyzer (3); the high-frequency current coil (12) and the electromagnetic induction coil (13) are respectively connected to the multi-channel spectrum analyzer (3); and the multi-channel spectrum analyzer (3) is communicatively connected to the industrial computer (4).
2. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The excitation coil (11) comprises a first input end (111), and the AC power source (2) comprises a first output end (21), wherein the first output end (21) is connected to the first input end (111).
3. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The multi-channel spectrum analyzer (3) comprises a second input terminal (31), and the AC power supply (2) comprises a second output terminal (22), wherein the second output terminal (22) is connected to the second input terminal (31).
4. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The multi-channel spectrum analyzer (3) comprises a third input terminal (32), and the high-frequency current coil (12) comprises a third output terminal (121), wherein the third output terminal (121) is connected to the third input terminal (32).
5. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The multi-channel spectrum analyzer (3) comprises a fourth input terminal (33), the electromagnetic induction coil (13) comprises a fourth output terminal (131), and the fourth output terminal (131) is connected to the fourth input terminal (33).
6. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The high-frequency current coil (12) comprises a primary winding and a secondary winding.
7. The lightning protection and grounding correlation analysis device according to claim 1, characterized in that: The electromagnetic induction coil (13) comprises an iron core, a primary winding and a secondary winding.
8. The lightning protection and grounding correlation analysis device according to any one of claims 1 to 7, characterized in that: The AC power source (2) is a sinusoidal AC power source.
9. The lightning protection and grounding correlation analysis device according to any one of claims 1 to 7, characterized in that: The grounding and lightning impulse sampling module (1) comprises a packaging box, in which the excitation coil (11), the high-frequency current coil (12) and the electromagnetic induction coil (13) are packaged.