High-power microwave electromagnetic pulse protection filter

Abstract

The utility model discloses a high-power microwave electromagnetic pulse protection filter, which comprises a shielding shell, a filter core arranged in the shielding shell, a plurality of quick connectors arranged at two ends of the filter core, a first threaded pipe connected to the surface of the shielding shell, an electric wire inserted into the first threaded pipe and electrically connected with the filter core through the quick connectors. A plurality of binding claws are arranged at the end part of the first threaded pipe, sealing rings are arranged in the binding claws and sleeve the surface of the electric wire, a tightening cap is in threaded connection with the surface of the first threaded pipe, and the tightening cap is screwed to push the binding claws to extrude the sealing rings, so that the sealing rings are tightened on the surface of the electric wire, the electric wire is extruded in the wire insertion hole, and rapid connection between the electric wire and the filter core is realized; and the sealing ring can tightly tighten the wire, so that the sealing performance of the connection between the wire and the shielding shell is improved, the wire can be prevented from sliding when the wire is pulled, and the good power connection between the wire and the filter core is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a high-power microwave electromagnetic pulse protection filter. Background Art

[0002] Electromagnetic pulse protection filter is a special supporting equipment for facilities such as anechoic chambers, shielded rooms, electronic cabins and cabinets, which can effectively suppress radiation interference.

[0003] Electromagnetic pulse protection filters require precise component parameters and high-quality characteristics of the amplifier to ensure the performance and stability of the filter. Electromagnetic pulse protection filters use a multi-level circuit structure, and each level has a different combination of components and connection methods. This requires careful design of each level of the circuit and ensuring that they are correctly connected, otherwise the performance of the entire circuit will be affected. However, the existing electromagnetic pulse protection filter terminals still use traditional screw crimping to connect the cable ends. The screw locking method is easy to loosen and fall off. When the wires are connected to the electromagnetic pulse protection filter housing, holes are generally punched in the housing, and the flexibility of the wire sheath is used to achieve the connection between the housing and the wires. The sealing is poor and there are certain defects. Utility Model Content

[0004] The purpose of the utility model is to provide a high-power microwave electromagnetic pulse protection filter to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a high-power microwave electromagnetic pulse protection filter, comprising a shielding shell, a filter core is installed inside the shielding shell, and a plurality of quick connectors are provided at both ends of the filter core;

[0006] The shielding shell is made of stainless steel, which has high mechanical strength and strong corrosion resistance, and has good protection effect on the filter. The wiring of the filter core is carried out in the shielding shell, which is safe and convenient.

[0007] The surface of the shielding shell is connected with a first threaded tube, an electric wire is inserted into the first threaded tube, and the electric wire is electrically connected to the filter core through a quick connector to achieve a quick connection between the electric wire and the filter core;

[0008] The end of the first threaded tube is provided with a plurality of contraction claws, the interior of the contraction claws is provided with a sealing ring, and the sealing ring is sleeved on the surface of the wire;

[0009] A tightening cap is screwed on the surface of the first threaded tube. Twisting the tightening cap pushes the tightening claw to squeeze the sealing ring so that the sealing ring is tightened on the surface of the wire to achieve a sealed connection between the wire and the shielding shell. When the wire is pulled, the wire is not easily disconnected from the filter core.

[0010] Furthermore, a wiring cover is installed on the surface of the shielding shell, screws are inserted into the surface of the wiring cover, and the screws are threadedly connected to the screw hole tubes arranged inside the shielding shell. The wiring cover can be opened to connect the wires to the filter core, providing operating space for wiring.

[0011] Furthermore, a retaining ring is fixedly connected to the surface of the first threaded tube, the first threaded tube is inserted into the interior of the shielding shell, a fixing nut is threaded on the surface of the first threaded tube, the fixing nut and the retaining ring clamp the shielding shell, the first threaded tube is stably connected to the shielding shell, and installation is also more convenient.

[0012] Furthermore, the quick connector includes a second threaded tube and an extrusion nut screwed on the surface of the second external threaded tube. The surface of the second threaded tube is provided with a wire insertion hole. The extrusion nut can be turned to achieve a quick connection between the wire and the filter core.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The wire can be inserted into the wire insertion hole on the surface of the second threaded tube. The wire can be squeezed into the wire insertion hole by twisting the extrusion nut and moving it along the second threaded tube, thereby realizing a quick connection between the wire and the filter core, and the wiring operation is also easier.

[0015] (2) The first threaded tube can be used to wrap the wire. After the wire is inserted into the sealing ring, the tightening cap can be twisted to squeeze the tightening claws to close. The tightening claws press the sealing ring so that the sealing ring can tighten the wire more tightly, thereby improving the sealing of the connection between the wire and the shielding shell. When the wire is pulled, it can prevent the wire from sliding, thereby ensuring that the wire and the filter core are well connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure inside the shielding shell of the utility model;

[0019] Figure 4 It is a cross-sectional view of the connection between the electric wire and the first threaded tube of the utility model.

[0020] In the figure: 1. Shielding shell; 2. Wiring cover; 3. Electric wire; 4. Tightening cap; 5. First threaded tube; 6. Filter core; 7. Second threaded tube; 8. Extrusion nut; 9. Wire insertion hole; 10. Screw; 11. Fixing hole; 12. Retaining ring; 13. Fixing nut; 14. Clamping claw; 15. Sealing ring; 16. Screw hole tube. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-4 , the utility model provides a technical solution: a high-power microwave electromagnetic pulse protection filter, comprising a shielding shell 1, a filter core 6 is installed inside the shielding shell 1, and a plurality of quick connectors are provided at both ends of the filter core 6;

[0024] The parameters of filter core 6 are rated voltage: 440 / 250V AC, operating frequency: 50 / 60Hz, rated current: 3~1000A, insertion loss: ≥100dB, 14KHz~40GHz, peak surge current: 70KA(8 / 20us), climate range: 25 / 070 / 21;

[0025] The shielding shell 1 made of stainless steel is strong and durable, and is not prone to rust, ensuring that the shielding shell 1 can better protect the filter core 6;

[0026] The surface of the shielding shell 1 is connected with a first threaded tube 5, the inside of which is inserted with an electric wire 3, and the electric wire 3 is electrically connected to the filter core 6 through a quick connector;

[0027] like Figure 4 As shown, a plurality of contracting claws 14 are provided at the end of the first threaded tube 5, and a sealing ring 15 is provided inside the contracting claw 14, and the sealing ring 15 is sleeved on the surface of the wire 3, and the sealing ring 15 is elastic and can hold the wire 3;

[0028] A tightening cap 4 is screwed on the surface of the first threaded tube 5. The tightening cap 4 is screwed to push the tightening claw 14 to squeeze the sealing ring 15, so that the sealing ring 15 is tightened on the surface of the wire 3. The right end of the tightening cap 4 is set in a conical contraction shape. When the tightening cap 4 is screwed, the tightening cap 4 can squeeze the tightening claw 14, ensuring that the tightening claw 14 can squeeze the sealing ring 15, thereby improving the waterproof effect of the sealing ring 15.

[0029] In this embodiment, if Figure 1 and Figure 2As shown, a wiring cover 2 is installed on the surface of the shielding shell 1, and a screw 10 is inserted into the surface of the wiring cover 2, and the screw 10 is threadedly connected to a screw hole tube 16 arranged inside the shielding shell 1. By unscrewing the screw 10, the wiring cover 2 can be removed from the shielding shell 1, so that the wire 3 can be conveniently connected to the wire plug hole 9.

[0030] In this embodiment, if Figure 3 As shown, a retaining ring 12 is fixedly connected to the surface of the first threaded tube 5, the first threaded tube 5 is inserted into the inside of the shielding shell 1, a fixing nut 13 is screwed on the surface of the first threaded tube 5, the fixing nut 13 and the retaining ring 12 clamp the shielding shell 1, and the first threaded tube 5 is inserted into the inner wall of the shielding shell 1. When the fixing nut 13 is tightened, ensure that the shielding shell 1, the fixing nut 13 and the retaining ring 12 are fixedly connected.

[0031] In this embodiment, if Figure 1 As shown, the edge of the surface of the shielding shell 1 is provided with a plurality of fixing holes 11, and the shielding shell 1 can be fixed to a designated position by passing screws 10 through the fixing holes 11, thereby achieving installation and fixation of the filter.

[0032] In this embodiment, if Figure 3 As shown, the quick connector includes a second threaded tube 7 and an extrusion nut 8 screwed on the surface of the second external threaded tube. The surface of the second threaded tube 7 is provided with a wire insertion hole 9. The second external threaded tube is electrically connected to the filter core 6 to ensure that the wire 3 connected to the second threaded tube 7 is electrically connected to the filter core 6.

[0033] Specifically, when in use, after loosening the screw 10, remove the wiring cover 2 from the shielding shell 1, insert the wire 3 into the first threaded tube 5 until the wire 3 passes through the first threaded tube 5, and after peeling the wire 3, insert the wire 3 into the wire insertion hole 9 on the surface of the second threaded tube 7, and then tighten the squeezing nut 8. The squeezing nut 8 squeezes the wire 3 inserted into the wire insertion hole 9 to ensure that the wire 3 is stably connected to the filter core 6, and then tighten the tightening cap 4. The tightening cap 4 will squeeze the gathering claw 14, and the gathering claw 14 will squeeze the sealing ring 15. The sealing ring 15 can tighten the wire 3, thereby improving the stability of the connection between the wire 3 and the shielding shell 1, and can also prevent water ingress problems, ensuring that the filter can be used in complex environments and is safer to use.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-power microwave electromagnetic pulse protection filter, characterized in that: It comprises a shielding shell (1), a filter core (6) is installed inside the shielding shell (1), and a plurality of quick connectors are provided at both ends of the filter core (6); The surface of the shielding shell (1) is connected to a first threaded tube (5), an electric wire (3) is inserted into the interior of the first threaded tube (5), and the electric wire (3) is electrically connected to the filter core (6) via a quick connector; The end of the first threaded tube (5) is provided with a plurality of contracting claws (14), the interior of the contracting claws (14) is provided with a sealing ring (15), and the sealing ring (15) is sleeved on the surface of the electric wire (3); A tightening cap (4) is threadedly connected to the surface of the first threaded tube (5). The tightening cap (4) is screwed to push the tightening claw (14) to squeeze the sealing ring (15), so that the sealing ring (15) is tightened on the surface of the electric wire (3).

2. A high power microwave electromagnetic pulse protection filter according to claim 1, characterized in that: A wiring cover (2) is installed on the surface of the shielding shell (1), a screw (10) is inserted into the surface of the wiring cover (2), and the screw (10) is threadedly connected to a screw hole tube (16) arranged inside the shielding shell (1).

3. The high-power microwave electromagnetic pulse protection filter according to claim 1, characterized in that: A retaining ring (12) is fixedly connected to the surface of the first threaded tube (5); the first threaded tube (5) is inserted into the interior of the shielding shell (1); a fixing nut (13) is threadedly connected to the surface of the first threaded tube (5); the fixing nut (13) and the retaining ring (12) clamp the shielding shell (1).

4. The high-power microwave electromagnetic pulse protection filter according to claim 1, characterized in that: A plurality of fixing holes (11) are provided on the edge of the surface of the shielding shell (1).

5. The high-power microwave electromagnetic pulse protection filter according to claim 1, characterized in that: The quick connector comprises a second threaded tube (7) and an extrusion nut (8) threadedly connected to the surface of the second external threaded tube, and a wire insertion hole (9) is provided on the surface of the second threaded tube (7).

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