N-type head penetrator for signal transmission
By designing an N-type head penetrator for signal transmission, the problem that the pulse current method is difficult to detect surface defects of GIS insulators is solved, effective signal transmission and flexible connection of equipment are realized, and good airtightness and pressure bearing capacity are achieved. Suitable for multiple debugging and verification.
Patent Information
- Application Number
- CN202420149266.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-20
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-20
AI Technical Summary
The existing pulse current method is difficult to detect defects on the surface of GIS insulators, and it is impossible to effectively transmit the signals detected in the cavity to the oscilloscope, and it is inconvenient to disassemble and assemble repeatedly during debugging.
An N-head through-member for signal transmission is designed, including an N-head, a coaxial shielded cable, an epoxy casting body and a mounting flange, which is connected to the coaxial shielded cable through an N-head, combining the sealing ring and casting , realizes effective signal transmission and has the function of repeated disassembly and installation.
It realizes effective transmission of detection signals in the cavity, facilitates connection of different detection impedances and testing equipment, has the advantages of good airtightness, strong pressure bearing capacity and flexible installation, and is suitable for repeated debugging and verification tests.
Smart Images
Figure CN222146782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of discharge detection, in particular to an N-type head penetrator used for signal transmission. Background Art
[0002] Gas-insulated metal-enclosed switchgear (GIS) is widely used in power systems due to its excellent properties. However, in recent years, GIS insulator surface flashover failures have occurred frequently, seriously threatening power supply safety. The weak links of GIS insulators will produce partial discharge under the action of high electric fields. Detecting whether there is partial discharge in the insulator is an important means to ensure its reliable operation.
[0003] The pulse current method is one of the irreplaceable tests for detecting and studying the performance of insulators. However, due to the limited detection sensitivity of the conventional pulse current method, it is difficult for the conventional pulse current method to detect signals for defects on the surface of insulators. In order to carry out relevant tests and verifications of the pulse current distribution measurement method, it is necessary to arrange detection impedance in the cavity of GIS. Therefore, a penetrator is required to transmit the signal detected inside the cavity to the oscilloscope, and it should also meet the requirements of repeated disassembly and assembly during continuous debugging. Utility Model Content
[0004] The utility model aims to solve the problems existing in the background technology, proposes an N-type head penetrator for signal transmission which realizes the signal transmission between the detection signal in the cavity and the signal of the external oscilloscope, and carries out corresponding verification tests.
[0005] The technical solution of the utility model is an N-type head penetrator for signal transmission, comprising an N-type head, a coaxial shielded cable, an epoxy casting body, a sealing ring and a mounting flange; the mounting flange has a casting area and a glue injection port and an exhaust port connected to the casting area; an N-type head is connected to each of the two ends of the coaxial shielded cable, wherein one N-type head is arranged at one end of the mounting flange; the sealing ring is arranged between the other end of the mounting flange and another N-type head; the epoxy casting body is poured in the casting area and wraps the coaxial shielded cable and the end of the N-type head.
[0006] Preferably, the glue injection port is connected to the bottom of the casting area, and the exhaust port is connected to the top of the casting area.
[0007] Preferably, the casting area is a conical space, and the diameter of the conical space gradually decreases from the middle to both ends.
[0008] Preferably, the sealing ring is an O-ring.
[0009] Compared with the prior art, the utility model has the following beneficial technical effects:
[0010] Both ends of the utility model are N-type heads, which are convenient for connecting different detection impedances and test equipment, and can be repeatedly disassembled and installed to debug different test parameters. The N-type head penetrator has the advantages of good air tightness, strong pressure bearing capacity and flexible installation. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural cross-sectional view of an embodiment of the utility model;
[0012] Figure 2 This is a structural front view of the mounting flange in an embodiment of the utility model.
[0013] Figure numerals: 1. N-type head; 2. Coaxial shielded cable; 3. Epoxy casting body; 4. Sealing ring; 5. Mounting flange. DETAILED DESCRIPTION
[0014] Embodiment 1
[0015] like Figure 1 and Figure 2 As shown, the present embodiment provides an N-type head penetrator for signal transmission, comprising an N-type head 1, a coaxial shielded cable 2, an epoxy casting body 3, a sealing ring 4 and a mounting flange 5.
[0016] The mounting flange 5 has a casting area and a glue injection port and an exhaust port communicated with the casting area. The mounting flange 5 can be processed into different sizes to match different components.
[0017] An N-type connector 1 is connected to each end of the coaxial shielded cable 2 , and one of the N-type connectors 1 is disposed at one end of the mounting flange 5 .
[0018] The sealing ring 4 is arranged between the other end of the mounting flange 5 and the other N-type head 1. The sealing ring 4 is an O-shaped sealing ring with good sealing effect.
[0019] The epoxy casting body 3 is poured in the casting area and wraps the coaxial shielded cable 2 and the end of the N-type connector 1 .
[0020] Both ends of this embodiment are N-type heads 1, which are convenient for connecting different detection impedances and test equipment, and can be repeatedly disassembled and installed to debug different test parameters. When assembling the penetrator, weld an N-type head 1 to one end of the coaxial shielded cable 2, then pass the coaxial shielded cable 2 through the casting area of the mounting flange 5, weld the other end of the coaxial shielded cable 2 to another N-type head 1, and then install the sealing ring 4 at the sealing groove at the end of the mounting flange 5. The inner side of the casting area is sealed by a sealing ring 4 and two N-type heads 1. Epoxy resin can only be injected into the casting area through the glue injection port. The epoxy resin squeezes the air in the casting area upward through the exhaust port. After the glue is injected, it is left to stand for 24 hours in a vacuum environment to fully exhaust the air, prevent air pockets, and eliminate quality defects such as bubbles. This N-type head penetrator has the advantages of good air tightness, strong pressure bearing capacity and flexible installation.
[0021] Embodiment 2
[0022] like Figure 1 and Figure 2 As shown, this embodiment proposes an N-type head penetrator for signal transmission. Compared with the first embodiment, in this embodiment, the injection port is connected to the bottom of the casting area, and the exhaust port is connected to the top of the casting area, so that the glue is injected from the bottom and the exhaust is exhausted from the top. The casting area is a conical space, and the diameter of the conical space gradually decreases from the middle to the two ends, which can significantly improve the pressure bearing strength of the penetrator.
[0023] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. An N-type head penetration device for signal transmission, It is characterized in that include: A mounting flange (5) having a casting area, and a glue injection port and an exhaust port communicated with the casting area; Coaxial shielded cable (2); Two N-type connectors (1) connected to both ends of the coaxial shielded cable (2), wherein one of the N-type connectors (1) is arranged at one end of the mounting flange (5); A sealing ring (4) disposed between the other end of the mounting flange (5) and the other N-type head (1); An epoxy casting body (3) is poured in the casting area and wraps the coaxial shielded cable (2) and the end of the N-type head (1).
2. An N-type head penetration device for signal transmission according to claim 1, It is characterized in that The glue injection port is connected to the bottom of the casting area, and the exhaust port is connected to the top of the casting area.
3. An N-type head penetration device for signal transmission according to claim 1, It is characterized in that The pouring area is a conical space, and the diameter of the conical space gradually decreases from the middle to the two ends.
4. The N-type head penetration device for signal transmission according to claim 1, It is characterized in that The sealing ring (4) is an O-shaped sealing ring.