Signal output device used for oil fuse

[0016] In order to better understand the technical solutions of the present invention, specific embodiments will be described in detail below in conjunction with the accompanying drawings.

[0017] see figure 1 , the signal output device for oil-immersed fuse of the present invention is installed on the fuse carrier of the fuse, the signal output device includes a switch cover 1, a micro switch 2, a quick connector 3 and a terminal 4.

[0018] The switch cover 1 includes a cover plate 11, an outer ring 12 connected to the front end face of the cover plate 11 and a switch groove 13 connected to the front end face of the cover plate 11 and located in the outer ring 12. The cover plate 11 of the switch cover 1 Open a cable perforation connected with the switch slot 13; the material of the switch cover 1 is unsaturated resin polyester;

[0019] The micro switch 2 is installed in the switch groove 13 of the switch cover 1 with its contact handle facing forward, and is fixed and sealed in the switch groove 13 of the switch cover 1 by epoxy glue 21; the quick connector 3 and the wiring The terminals 4 are all arranged on the outside of the switch cover 1. The quick connector 3 is composed of a plug 31 and a socket 32. The plug 31 is connected to the micro switch 2 through a three-core sheathed wire 5 passing through the cable hole on the switch cover 1. and the part of the three-core sheathed wire 5 located in the switch slot 13 is fixed and sealed in the switch slot 13 by epoxy glue 21, and the socket 32 ​​is connected to the wiring through another three-core sheathed wire 5 The three contacts of terminal 4 are connected. The quick connector 3 has a cylindrical structure. The plug 31 and the socket 32 ​​can realize quick connection and disconnection.

[0020] see again figure 2 The oil-immersed fuse includes a cylindrical base with one-way opening and a fuse carrier and a fuse that are sequentially arranged in the base from the opening direction of the base; A rear coupler mounted on the rear end of the fuse, a front coupler fixed on the front end of the fuse and a linkage device 20 movably connected to the handle 10 . The handle 10 includes a handle 101 and a connecting rod 102. The center of the handle 101 is provided with an axial through hole, and the rear end of the axial through hole is provided with an internal thread.

[0021] When the signal output device of the present invention is installed, the switch cover 1 is installed on the rear port of the handle 10 with the switch slot 13 forward, and the switch cover 1 is screwed to the rear port of the handle 10, that is, the shaft of the switch cover 1 and the handle 10 It is screwed to the rear port of the through hole, and the outer ring 12 of the switch cover 1 is provided with external threads, so that the switch cover 1 can be screwed to the rear port of the handle 101 . The outer ring 12 of the switch cover 1 is also fitted with a sealing ring 6 that enables the switch cover 1 to be packaged at the rear port of the handle 10; the sealing ring 6 is an O-ring and is made of high temperature resistant and aging resistant rubber material.

[0022] The contact handle of the microswitch 2 in the signal output device of the present invention realizes the signal output function after being in contact with the screw head of the limit screw 30 in the axial through hole of the handle 10, the limit screw 30 The screw is connected to the linkage device 20; when the circuit is overloaded or short-circuited, the fuse in the fuse will blow, causing the impactor installed in the fuse to lose its tension and pop up to push the linkage 20 to move backward, so that the limit screw 30 touch the contact handle of the micro switch 2 to open the contact of the micro switch 2 to realize signal output. After the oil-immersed fuse adopts the signal output device of the present invention, it can accurately, effectively, quickly and intuitively observe the internal fusing status, so that the personnel of the wind power monitoring station can monitor remotely, know where the fault occurs in time, and ensure that the circuit will not There are safety risks due to lack of phase operation, and the device is still fully sealed after being installed on the fuse, which is of great help to the maintenance of wind power.

[0023] The signal output device of the present invention, when being disassembled, can quickly disconnect the electrical connection between the terminal 4 and the micro switch 2 through the quick connector 3, and then take out the fuse. 2. It is fixed and sealed in the switch slot 13 of the switch cover 1 by epoxy glue 21, and has good insulation performance. In addition, because the part of the three-core sheathed wire 5 located in the switch slot 13 is fixed and sealed in the switch slot by epoxy glue 21 In 13, its insulation and sealing performance is further improved, and when the signal output device of the present invention is disassembled, the sheath wire 5 is not easy to be pulled off, the switch cover 1 is screwed to the rear port of the handle 101, and is encapsulated by the sealing ring 6, It is anti-fog and moisture-proof, and is suitable for use in places with harsh environments. It can provide signal output after the fuse operates to prevent the circuit from running without phase and reduce safety risks.

[0024] The above embodiments are only for the purpose of illustrating the present invention, rather than limiting the present invention. Those skilled in the relevant technical fields can also make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent The technical solutions should also belong to the category of the present invention and should be defined by each claim.