Gigabit network signal surge protection device

Abstract

The utility model provides a gigabit network signal surge protection device, which can provide effective lightning protection and overvoltage protection for a gigabit network system, and solves the problems of waveform distortion and interference between channels in network transmission. The lightning protection device comprises an input end connector and an output end connector, corresponding joints of the input end connector and the output end connector are connected through circuit wires, each circuit wire is provided with a lightning discharge module, and the lightning discharge modules are connected with the ground through a ground screen isolation module; the lightning discharge module is connected in parallel with the first-stage clamping module, and the first-stage clamping module is connected in parallel with the second-stage clamping module; and the input end connector and the output end connector are connected with the ground.

Description

Technical Field

[0001] The utility model relates to a signal lightning protection technology, in particular to a gigabit network signal surge protector. Background Art

[0002] With the development of science and technology, signal equipment is becoming more and more sophisticated. During the thunderstorm season, in order to ensure the normal operation of the signal system and protect the signal equipment from damage by lightning, a surge protector is installed at the front end of the signal equipment. This can discharge the instantaneous lightning current into the ground and suppress the instantaneous voltage within the tolerance range of the equipment. Installing a surge protector is an important lightning protection measure to protect the signal system and signal equipment from operating safely during the thunderstorm season.

[0003] Traditional signal surge protectors either cannot meet the requirements of gigabit transmission or affect the transmission quality due to various interferences. Developing a gigabit network signal surge protector with excellent transmission quality can provide effective lightning protection and overvoltage protection for the gigabit network system, and solve the problems of waveform distortion and interference between channels generated during network transmission. Summary of the invention

[0004] In order to meet the needs of the market and customers, the utility model provides a gigabit network signal surge protector, which adopts multiple protections between single lines and between pairs of lines, and designs forward and reverse all-round protection branches to reduce the distributed capacitance between lines and between lines and ground, and minimize transmission interference. The utility model can provide effective lightning protection and overvoltage protection for gigabit network systems, and solve the problems of waveform distortion and interference between channels generated in network transmission.

[0005] The technical solution adopted by the utility model is:

[0006] The utility model is a surge protector applied to computer network signal systems and equipment lightning protection, which is connected in series between a signal input line and a protected device.

[0007] A gigabit network signal surge protector comprises an input connector 1 and an output connector 2, wherein corresponding joints of the input connector 1 and the output connector 2 are connected via circuit wires, a lightning discharge module 3 is arranged on each circuit wire, and the lightning discharge module 3 is connected to the earth via a ground grid isolation module 4; the lightning discharge module 3 is connected in parallel with a first-stage clamping module 5, and the first-stage clamping module 5 is connected in parallel with a second-stage clamping module 6; the input connector 1 and the output connector 2 are connected to the earth.

[0008] The first-stage clamping module 5 is arranged between every two circuit conductors to form a protection branch between the two conductors.

[0009] The second-stage clamping module 6 is arranged between each pair of wires to form a protection branch between the pairs of wires.

[0010] The first-stage clamping module 5 and the second-stage clamping module 6 each include two clamping branches, which respectively constitute forward and reverse bidirectional protection branches.

[0011] The lightning discharge module 3 and the ground grid isolation module 4 both include discharge tubes.

[0012] The first-stage clamping module 5 and the second-stage clamping module 6 both include a diode and a TVS tube.

[0013] The input connector 1 and the output connector 2 preferably use connectors with shielding layers.

[0014] The beneficial effects of the utility model are that overcurrent and overvoltage caused by lightning or other reasons can be discharged and clamped to protect the safe operation of signal lines and downstream equipment; at the same time, signal interference from various electric fields, magnetic fields, etc. can be reduced to ensure smooth signal transmission and the integrity and clarity of data and images. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a circuit schematic diagram of the utility model.

[0016] 1-input connector, 2-output connector, 3-lightning discharge module, 4-ground grid isolation module, 5-first-stage clamping module, 6-second-stage clamping module. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0018] The principle of the utility model is as follows Figure 1 As shown, four circuits are designed to protect four pairs of network signal lines 1, 2; 3, 6; 4, 5; 7, 8 respectively.

[0019] The input connector 1 is connected to the external network signal line one by one, and the output connector 2 is connected to the protected device. When there is no lightning strike, the external signal is input through the input connector 1 and output to the protected device through the output connector 2.

[0020] When lightning occurs, as the voltage at both ends of the signal surge protector instantly increases, the lightning surge discharge module 3 is turned on, and the lightning surge discharge module 3 quickly discharges the surge energy on the external invading signal line into the ground. At this time, the voltage at both ends is very high, and the first-stage clamping module and the second-stage clamping module perform graded suppression of the excessive voltage, limiting the voltage at both ends of the device to within the tolerable range, thereby protecting the device from damage due to excessive voltage.

[0021] The lightning discharge module 3 includes Figure 1 Among the GDT1, GDT2, GDT3, and GDT4, two poles of GDT1, GDT2, GDT3, and GDT4 are respectively connected to circuit wires 1 and 2, 4 and 5, 3 and 6, and 7 and 8, and the other pole is connected to the ground grid isolation module 4.

[0022] The first-stage clamping module 5 is connected in parallel at both ends of GDT1, GDT2, GDT3, and GDT4 respectively. The first-stage clamping module 5 includes two clamping branches. For example, the first-stage clamping module 5 connected in parallel at both ends of GDT4 includes a clamping branch formed by D1, D2, TVS1, D8, and D7 and a clamping branch formed by D5, D6, TVS1, D4, and D3, forming a forward and reverse protection structure between the wires 7 and 8.

[0023] The first-stage clamping module 5 is connected in parallel with the second-stage clamping module 6. The second-stage clamping module 6 includes two clamping branches. For example, the second-stage clamping module 6 between the two pairs of wires 7 and 8, and 3 and 6 includes a clamping branch formed by D33, D34, TVS5, D40, and D39, and a clamping branch formed by D37, D38, TVS5, D36, and D35, forming forward and reverse protection structures for the pairs of wires 7 and 8, and the pairs of wires 3 and 6.

[0024] The design of multi-level clamping branches and forward and reverse clamping branches can provide all-round protection regardless of whether the lightning current invades the signal line or enters the signal line through the ground wire. The positive and negative bidirectional protection branch design can minimize the distributed capacitance.

[0025] The GDT 5 included in the ground grid isolation module 4 is connected to the ground, and the input-end connector 1 and the output-end connector 2 are connected to the ground.

Claims

1. A Gigabit network signal surge protector, characterized by: The invention comprises an input-end connector (1) and an output-end connector (2), wherein corresponding joints of the input-end connector (1) and the output-end connector (2) are connected via circuit wires, and each circuit wire is provided with a lightning discharge module (3), and the lightning discharge module (3) is connected to the earth via a ground grid isolation module (4); the lightning discharge module (3) is connected in parallel with a first-stage clamping module (5), and the first-stage clamping module (5) is connected in parallel with a second-stage clamping module (6); and the input-end connector (1) and the output-end connector (2) are connected to the earth.

2. The Gigabit network signal surge protector according to claim 1, characterized in that: The first-stage clamping module (5) is arranged between every two circuit conductors to form a protection branch between the two conductors.

3. The Gigabit network signal surge protector according to claim 1, characterized in that: The second-stage clamping module (6) is arranged between each pair of wires to form a protection branch between the pairs of wires.

4. The Gigabit network signal surge protector according to claim 1, characterized in that: The first-stage clamping module (5) comprises two clamping branches, which respectively constitute forward and reverse bidirectional protection branches; the second-stage clamping module (6) comprises two clamping branches, which respectively constitute forward and reverse bidirectional protection branches.

5. The Gigabit network signal surge protector according to claim 1, characterized in that: The lightning discharge module (3) and the ground grid isolation module (4) both comprise a discharge tube.

6. The Gigabit network signal surge protector according to claim 1, characterized in that: The first-stage clamping module (5) and the second-stage clamping module (6) both comprise a diode and a TVS tube.

7. The Gigabit network signal surge protector according to claim 1, characterized in that: The input-end connector (1) and the output-end connector (2) are preferably connectors having a shielding layer.

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