Fuse with double-signal output function

Abstract

The utility model relates to a fuse with a dual-signal output function, which comprises a sleeve, a fuse link and a fuse carrying assembly, the fuse link and the fuse carrying assembly are fixed in the sleeve, the fuse carrying assembly comprises a ram, a linkage rod, an impact rod, an insulation connecting rod, an impact flat gasket, a reset spring, a microswitch, an outer gland and a wiring terminal, the collision head is fixed at the left end of the linkage rod, the collision rod is fixed at the right end of the linkage rod, the collision head and the collision rod are both in sliding connection with the insulation connecting rod, the collision flat gasket is installed at the right end of the collision rod, the outer gland is installed at the right end of the insulation connecting rod, the microswitch is installed on the outer gland, the wiring terminal is installed on the outer gland, and the microswitch is connected with the wiring terminal. The right end of the fuse piece is fixedly connected with the insulating connecting rod, and an impactor is arranged in the fuse piece. After the scheme is adopted, a double-signal output function is realized, and fault expansion caused by the fact that a power supply is not cut off in time after the box transformer substation breaks down can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to a fuse with a double signal output function. Background Art

[0002] At present, the fuses of box transformers generally have a signal output function. When the box transformer or line fails, the fuse blows for protection, and the signal is transmitted to the central control room of the power station. After receiving the information, the central control room arranges staff to go to the site to manually disconnect the frame circuit breaker on the low-voltage side of the box transformer, disconnect the load switch, and shut down the faulty box transformer. Since the central control room of the power station is a certain distance away from the box transformer, which can be tens of meters or tens of kilometers, before the staff disconnects the low-voltage frame circuit breaker, the low-voltage side of the box transformer is still transmitting power, and sometimes the fuse will be broken after it is broken (small current blows), causing the expansion of the box transformer failure. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fuse with a dual signal output function, which realizes the dual signal output function and can effectively avoid the expansion of the fault caused by the failure to cut off the power supply in time after the box transformer fails, thereby causing unnecessary losses.

[0004] In order to solve the above technical problems, the technical solutions provided by the utility model are as follows:

[0005] A fuse with a dual signal output function comprises: a sleeve, a fuse and a fuse carrier assembly, wherein the fuse and the fuse carrier assembly are fixed in the sleeve, and the fuse carrier assembly comprises a striker, a linkage rod, a striker rod, an insulating connecting rod, a striker flat pad, a reset spring, a micro switch, an outer pressure cover and a wiring terminal, wherein the striker is fixed to the left end of the linkage rod, the striker rod is fixed to the right end of the linkage rod, the linkage rod and the insulating connecting rod are arranged in parallel and spaced apart, and the striker and the striker rod are both slidably connected to the insulating connecting rod, the striker flat pad is installed at the right end of the striker rod, and the outer pressure cover is installed at the right end of the insulating connecting rod. The micro switch is installed on the outer pressure cover, two micro switches are provided, and the micro switch is located on the right side of the impact pad, the wiring terminal is installed on the outer pressure cover, and the micro switch is connected to the wiring terminal; the right end of the fuse is fixedly connected to the insulating connecting rod, and a striker is provided in the fuse, and the striker is located on the left side of the impact head; the reset spring is slidably installed in the insulating connecting rod, and one end of the reset spring abuts against the outer pressure cover, and the other end of the reset spring abuts against the impact rod, and the left end of the linkage rod abuts against the insulating connecting rod under the action of the reset spring.

[0006] Preferably, a first through hole is provided on the insulating connecting rod, and the return spring is installed in the first through hole.

[0007] Preferably: a first avoidance gap and a second through hole are provided on the insulating connecting rod, the second through hole is connected to the first avoidance gap, the linkage rod is C-shaped, the impact head is horizontally installed at the left end of the linkage rod, the left end of the linkage rod is located in the first avoidance gap, and the impact head is slidably fitted in the second through hole.

[0008] Preferably: the impact rod is horizontally installed at the right end of the linkage rod, and the insulating connecting rod is provided with a second avoidance gap, a third avoidance gap and a third through hole, the second avoidance gap and the third avoidance gap are arranged at intervals, the third through hole is located between the second avoidance gap and the third avoidance gap, and the third through hole connects the second avoidance gap and the third avoidance gap, the right end of the linkage rod is located in the second avoidance gap, and the impact rod passes through the second avoidance gap, the third through hole and the third avoidance gap in sequence.

[0009] The beneficial effect of the utility model is that when a fault current occurs, the fuse will be blown, the striker in the striker will pop out, and after the striker pops out, it will hit the striker head, which will be pushed forward, so that the linkage rod and the striker rod and the striker flat pad at the other end of the linkage rod will be pushed forward, and after being pushed forward, the striker flat pad will support the micro switch button. Since the two micro switch buttons are flush, the two micro switches will be triggered at the same time, and the normally open will become normally closed (or the normally closed will become normally open). The signal output by each micro switch can be transmitted to the background to the power station control room to prompt the fuse alarm according to its secondary connection direction, and the other group of signals can be connected to the low-voltage side frame circuit breaker line, directly tripping the low-voltage side frame circuit breaker, stopping power transmission at the phase fault point, and avoiding the severity of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0011] Figure 1 The cross-sectional view of the embodiment of the fuse with dual signal output function described in the utility model Figure 1 ;

[0012] Figure 2 It is a partial cross-sectional view of an embodiment of a fuse with dual signal output function according to the utility model;

[0013] Figure 3 for Figure 2 Cross-sectional view along the A direction.

[0014] in:

[0015] 1. Sleeve;

[0016] 2. Fuse; 21. Strike;

[0017] 3. Head banging;

[0018] 4. Linkage rod;

[0019] 5. Impact rod;

[0020] 6. Insulating connecting rod; 61. First through hole; 62. First avoidance gap; 63. Second avoidance gap; 64. Third avoidance gap;

[0021] 7. Impact flat pad;

[0022] 8. Return spring;

[0023] 9. Micro switch;

[0024] 10. External gland;

[0025] 11. Wiring terminals. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it is necessary to understand that the directions and positional relationships indicated by “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figures 1 to 3 As shown,

[0029] A fuse with a dual signal output function comprises: a sleeve 1, a fuse 2 and a fuse carrier assembly, wherein the fuse 2 and the fuse carrier assembly are fixed in the sleeve 1, and the fuse carrier assembly comprises a striker 3, a linkage rod 4, a striker rod 5, an insulating connecting rod 6, a striker flat pad 7, a reset spring 8, a micro switch 9, an outer pressure cover 10 and a terminal 11, wherein the striker 3 is fixed to the left end of the linkage rod 4, the striker rod 5 is fixed to the right end of the linkage rod 4, the linkage rod 4 and the insulating connecting rod 6 are arranged in parallel and spaced apart, and the striker 3 and the striker rod 5 are both slidably connected to the insulating connecting rod 6, the striker flat pad 7 is installed at the right end of the striker rod 5, and the outer pressure cover 10 is installed at the insulating connecting rod 6. At the right end of the fuse 2, a microswitch 9 is installed on the outer pressure cover 10, two microswitch 9 are provided, and the microswitch 9 is located on the right side of the impact flat pad 7, the terminal 11 is installed on the outer pressure cover 10, and the microswitch 9 is connected to the terminal 11; the right end of the fuse 2 is fixedly connected to the insulating connecting rod 6, and a striker 21 is provided in the fuse 2, and the striker 21 is located on the left side of the impact head 3; the reset spring 8 is slidably installed in the insulating connecting rod 6, and one end of the reset spring 8 abuts on the outer pressure cover 10, and the other end of the reset spring 8 abuts on the impact rod 5, and the left end of the linkage rod 4 abuts on the insulating connecting rod 6 under the action of the reset spring 8.

[0030] In this way, when a fault current occurs, the fuse will be blown, and the striker in the striker 21 will pop out. After popping out, the striker will hit the striker head 3, and the striker head 3 will be pushed forward, so that the linkage rod 4 and the striker rod 5 and the striker flat pad 7 at the other end of the linkage rod 4 will be pushed forward. After being pushed forward, the striker flat pad 7 will support the microswitch 9 button. Since the two microswitch 9 buttons are flush, the two microswitches 9 will be triggered at the same time, and the normally open will become normally closed (or the normally closed will become normally open). The signal output by each microswitch 9 can be transmitted to the background and the power station control room to prompt the fuse alarm according to its secondary connection direction, and the other group of signals can be connected to the low-voltage side frame circuit breaker line, directly tripping the low-voltage side frame circuit breaker, stopping power transmission at the phase fault point, and avoiding the severity of the fault.

[0031] In addition, a first through hole 61 is provided on the insulating connecting rod 6 , and the return spring 8 is installed in the first through hole 61 .

[0032] In this way, the return spring 8 can be effectively prevented from falling off.

[0033] In addition, a first avoidance gap 62 and a second through hole are provided on the insulating connecting rod 6, the second through hole and the first avoidance gap 62 are connected, the linkage rod 4 is C-shaped, the impact head 3 is horizontally installed at the left end of the linkage rod 4, the left end of the linkage rod 4 is located in the first avoidance gap 62, and the impact head 3 is slidably fitted in the second through hole.

[0034] In this way, the lateral sliding of the impact head 3 can be stably achieved.

[0035] In addition, the impact rod 5 is horizontally installed at the right end of the linkage rod 4, and the insulating connecting rod 6 is provided with a second avoidance gap 63, a third avoidance gap 64 and a third through hole. The second avoidance gap 63 and the third avoidance gap 64 are arranged at intervals, and the third through hole is located between the second avoidance gap 63 and the third avoidance gap 64, and the third through hole connects the second avoidance gap 63 and the third avoidance gap 64. The right end of the linkage rod 4 is located in the second avoidance gap 63, and the impact rod 5 passes through the second avoidance gap 63, the third through hole and the third avoidance gap 64 in sequence.

[0036] In this way, the lateral sliding of the striking rod 5 can be stably achieved.

[0037] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuse with dual signal output function, characterized in that: include: A sleeve, a fuse and a fuse carrier assembly, wherein the fuse and the fuse carrier assembly are fixed in the sleeve, and the fuse carrier assembly includes a striker, a linkage rod, a striker rod, an insulating connecting rod, a striker flat pad, a reset spring, a micro switch, an outer pressure cover and a terminal, wherein the striker is fixed at the left end of the linkage rod, the striker rod is fixed at the right end of the linkage rod, the linkage rod and the insulating connecting rod are arranged in parallel and spaced apart, and the striker and the striker rod are both slidably connected to the insulating connecting rod, the striker flat pad is installed at the right end of the striker rod, the outer pressure cover is installed at the right end of the insulating connecting rod, and the micro switch is installed at the left end of the linkage rod. On the outer pressure cover, two micro switches are provided, and the micro switches are located on the right side of the impact pad, the wiring terminal is installed on the outer pressure cover, and the micro switch is connected to the wiring terminal; the right end of the fuse is fixedly connected to the insulating connecting rod, and a striker is provided in the fuse, and the striker is located on the left side of the impact head; the reset spring is slidably installed in the insulating connecting rod, and one end of the reset spring abuts against the outer pressure cover, and the other end of the reset spring abuts against the impact rod, and the left end of the linkage rod abuts against the insulating connecting rod under the action of the reset spring.

2. The fuse with dual signal output function according to claim 1, characterized in that: The insulating connecting rod is provided with a first through hole, and the return spring is installed in the first through hole.

3. The fuse with dual signal output function according to any one of claims 1-2, characterized in that: The insulating connecting rod is provided with a first avoidance gap and a second through hole, the second through hole is connected to the first avoidance gap, the linkage rod is C-shaped, the impact head is horizontally installed at the left end of the linkage rod, the left end of the linkage rod is located in the first avoidance gap, and the impact head is slidably fitted in the second through hole.

4. The fuse with dual signal output function according to claim 3, characterized in that: The impact rod is horizontally installed at the right end of the linkage rod, and the insulating connecting rod is provided with a second avoidance gap, a third avoidance gap and a third through hole, the second avoidance gap and the third avoidance gap are arranged at intervals, the third through hole is located between the second avoidance gap and the third avoidance gap, and the third through hole connects the second avoidance gap and the third avoidance gap, the right end of the linkage rod is located in the second avoidance gap, and the impact rod passes through the second avoidance gap, the third through hole and the third avoidance gap in sequence.

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