Electrical connector of micro-water pressure and temperature sensor for GIS (Gas Insulated Switchgear)

Abstract

The utility model discloses an electrical connector of a micro water pressure temperature sensor for a GIS, which comprises a sensor upper cover, a patch board, an insertion sheet and a wire harness, a step hole is arranged at one end of the sensor upper cover, the patch board is arranged on the step surface of the step hole, the insertion sheet is inserted on the patch board, and the wiring harness is arranged on the patch board. One end of the insertion piece is located in the stepped hole along with the patch board, the other end of the insertion piece is exposed out of the sensor upper cover, the wiring harness is connected to the patch board so as to be connected with the insertion piece, one end of the wiring harness is located in the stepped hole along with the patch board, and the other end of the wiring harness is exposed out of the sensor upper cover. The other end is provided with a wire pressing terminal which is provided with a rubber shell. The stepped hole is provided with an internal thread metal hose connector for connection. The utility model solves the problems that the conventional connecting piece is too complicated and the cost is too high, and provides the electrical joint which is lower in cost and simpler and safer to operate.

Description

Technical Field

[0001] This utility model relates to an electrical connector for a micro water pressure and temperature sensor in gas-insulated switchgear, specifically an electrical connector for a micro water pressure and temperature sensor used in GIS. Background Technology

[0002] SF6 gas possesses excellent insulation and arc-quenching properties, and is widely used in electronic and electrical equipment. A typical application is in high-voltage switchgear (GIS) in power transmission and transformation stations and power plants. Under the influence of a high-temperature electric arc, SF6 gas easily reacts with the insulating materials within high-voltage switchgear, decomposing to generate fault gases such as CO and H2S. The moisture content (ppmv) refers to the volume percentage of water contained in one million parts per million of gas. Because of its extremely low moisture content, it is called "micro-moisture," and micro-moisture is widely used in industrial applications where strict dryness requirements are in place. In high-voltage switchgear, excessively high moisture content reduces the insulation performance of SF6 gas, thus affecting the safe operation of the high-voltage switch.

[0003] Ordinary micro water pressure and temperature sensors have complex electrical connectors, which connect to aviation connectors and then to metal hose connectors, making the connection complicated and costly. Utility Model Content

[0004] To address the shortcomings of the prior art, this utility model provides an electrical connector for a micro water pressure and temperature sensor for GIS. This utility model solves the problems of overly complex and costly connectors in the past, and provides a lower-cost, simpler and safer electrical connector that can be directly connected to a metal flexible hose connector.

[0005] To achieve the above technical objectives, this utility model adopts the following technical solution: an electrical connector for a micro water pressure and temperature sensor for GIS, comprising a sensor cover, a junction box, a plug, and a wire harness. One end of the sensor cover has a stepped hole. The junction box is placed on the stepped surface of the stepped hole. The plug is inserted into the junction box. One end of the plug follows the junction box and is located inside the stepped hole, while the other end protrudes outside the sensor cover. The wire harness is connected to the junction box and thus to the plug. One end of the wire harness follows the junction box and is located inside the stepped hole, while the other end protrudes outside the sensor cover, and the other end is provided with a crimp terminal. The crimp terminal is provided with a rubber shell. The stepped hole is provided with an internally threaded metal flexible hose connector for connection.

[0006] The end of the plug is provided with a pin, and the terminal block has multiple sets of pin holes, and the pins are soldered into the corresponding pin holes.

[0007] A groove is made on the bottom outer side of the sensor cover.

[0008] A sealing groove is also provided on the bottom outer side of the sensor cover.

[0009] In summary, this utility model achieves the following technical effects:

[0010] This utility model features a novel connection method: the lead-out end of the micro water sensor is directly connected to the metal flexible hose connector, eliminating the need for an aviation connector and resulting in a more compact connection.

[0011] This invention is easy to install; subsequent switching on and off can be achieved simply by inserting and removing the spring, making it simple and convenient. Under normal circumstances, it can operate stably for a long time without additional maintenance, reducing maintenance costs. Attached Figure Description

[0012] Figure 1 This is an exploded schematic diagram of the electrical connectors of a micro water pressure and temperature sensor for GIS.

[0013] Figure 2 This is a cross-sectional view of the sensor's top cover;

[0014] Figure 3 This is a schematic diagram of the electrical connector assembly. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 according to the specific circumstances.

[0020] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] Example:

[0022] Figure 1 This is an exploded schematic diagram of the electrical connectors of a micro water pressure and temperature sensor for GIS. Figure 2 This is a cross-sectional view of the sensor's top cover. Figure 3 This is a schematic diagram of an electrical connector assembly, including a sensor cover 3, a junction box 2, a plug 1, and a wire harness 4. One end of the sensor cover 3 has a stepped hole. The junction box 2 is placed on the stepped surface 32 of the stepped hole. The plug 1 is inserted into the junction box 2. One end of the plug 1 follows the junction box 2 and is located inside the stepped hole, while the other end is exposed outside the sensor cover 3. The wire harness 4 is connected to the junction box 2 and thus connected to the plug 1. One end of the wire harness 4 follows the junction box 2 and is located inside the stepped hole, while the other end is exposed outside the sensor cover 3. The other end is provided with a crimp terminal 5, and the crimp terminal 5 is provided with a plastic shell 6.

[0023] This utility model features a novel connection method: the lead-out end of the micro water sensor is directly connected to the metal flexible hose connector, eliminating the need for an aviation connector and resulting in a more compact connection.

[0024] The end of the plug 1 is provided with a pin 11, and the terminal block 2 has multiple sets of pin holes 21, and the pin 11 is soldered into the pin holes 21.

[0025] The length of the insert extends beyond the sensor cover 3. Multiple inserts are connected to the junction box in an arranged manner. The other end of the insert can be connected to a universal spring to form a stable communication connection.

[0026] The diameter of the junction box 2 is adapted to and fixed to the inner wall of the sensor cover 3, and the pin hole positions are consistent with the plug arrangement.

[0027] A groove 33 is formed on the outer bottom of the sensor cover 3. The groove can be fixed to the micro-water sensor housing (not shown) through a threaded hole, increasing the tightness of the connection with the cylindrical housing. The micro-water sensor housing is a cylindrical shell, and the groove 33 is fixed to the micro-water sensor housing with a mortise screw.

[0028] A sealing groove 34 is also provided on the bottom outer side of the sensor cover 3. A sealing ring is installed in the sealing groove to improve the sealing performance and play a waterproof role.

[0029] The inner wall of the sensor cover 3 is provided with an internal thread 31, that is, the large diameter side of the stepped hole is provided with an internal thread, and the internal thread 31 can be connected to a metal hose connector (not shown).

[0030] One end of the wire harness 4 is fixed to the pin hole 21 of the connector 2, and the other end of the wire harness is crimped together with the crimp terminal using crimping pliers. The shape of the crimp terminal 5 is adapted to the housing 6. The crimp terminal is energized and loaded. After the housing 6 and the crimp terminal are inserted, they can form a stable communication with the male connector.

[0031] The stepped holes on the sensor cover are fixed with epoxy resin on both sides. After soldering, the junction box is placed into the sensor cover, and epoxy resin is poured into both sides for fixation. The junction box, plug, and wire harness are fixed inside the terminals with modified epoxy resin, which can provide conductivity and waterproofing.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. An electrical connector for a micro water pressure and temperature sensor used in GIS, characterized in that: The sensor includes a sensor cover (3), a junction box (2), a plug (1), and a wire harness (4). One end of the sensor cover (3) has a stepped hole. The junction box (2) is placed on the stepped surface (32) of the stepped hole. The plug (1) is inserted into the junction box (2). One end of the plug (1) is located inside the stepped hole along with the junction box (2), and the other end is exposed outside the sensor cover (3). The wire harness (4) is connected to the junction box (2) and thus connected to the plug (1). One end of the wire harness (4) is located inside the stepped hole along with the junction box (2), and the other end is exposed outside the sensor cover (3). The other end is provided with a wire clamping terminal (5). The wire clamping terminal (5) is provided with a plastic shell (6). The stepped hole is provided with an internally threaded (31) metal flexible hose connector for connection.

2. The electrical connector for a micro water pressure and temperature sensor for GIS according to claim 1, characterized in that: The end of the insert (1) is provided with a pin (11), and the terminal block (2) has multiple sets of pin holes (21), and the pin (11) is soldered into the pin holes (21).

3. The electrical connector for a micro water pressure and temperature sensor for GIS according to claim 1, characterized in that: A groove (33) is provided on the bottom outer side of the sensor cover (3).

4. The electrical connector for a micro water pressure and temperature sensor for GIS according to claim 1, characterized in that: A sealing groove (34) is also provided on the bottom outer side of the sensor cover (3).

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