CN219370961U - Fusion tube and electronic drop-out fuse with current detection function - Google Patents

Abstract

The utility model provides a fusion tube with current detection function, fusion tube (8) still includes current detection module, the inside low-end current detection circuit and the high-end current detection circuit of being provided with of current detection module. The electric drop-out fuse comprises a fusion tube (8), a driving mechanism (1), an insulating push-pull rod (3), a rocker arm (5), an electric push rod (6), an electric brake separating hook (7) and a rubber insulating support (10). The fusion tube provided by the utility model has a current detection function, so that the problem of poor stability of the existing driving mechanism during operation is effectively solved.

Description

Fusion tube and electronic drop-out fuse with current detection function

Technical Field

The utility model relates to an electric drop-out fuse, in particular to a fusion tube with a current detection function and the electric drop-out fuse.

Background

The fuse is an overcurrent protection electric appliance. The protector is widely applied to high-low voltage distribution systems, control systems and electric equipment and used as a protector for short circuit or overcurrent. When the current exceeds a specified value, the melt is fused by the heat generated by the current, and an electric appliance of the circuit is disconnected. The electric drop-out fuse is an outdoor high-voltage protector, is assembled on the high-voltage side of a distribution transformer or in a distribution line support rod circuit, is used as a short circuit, overload protection and switching coincidence current of the transformer and the circuit, is connected in series in a protected circuit, and when the circuit or equipment in the circuit is overloaded or fails, the fuse heats and melts, so that the circuit is cut off, and the purpose of protecting the circuit or the equipment is achieved.

The current electric drop-out fuse has the following problems:

problem 1: the current fusion tube has no function of detecting current.

Problem 2: the fusion tube, the swing arm and the driving mechanism are complex in composition, and the driving mechanism is inconvenient to directly drive the swing arm to rotate, or the driving mechanism needs high power to drive the swing arm to rotate.

Based on the above, the utility model provides a fusion tube with a current detection function and an electric drop-out fuse.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an electric drop-out fuse.

The technical scheme adopted for solving the technical problems is as follows:

the fusion pipe with the current detection function comprises a fusion pipe body 801, wherein the fusion pipe body 801 is of a hollow pipe body structure, a movable contact 803 is arranged at the top of the fusion pipe body 801, and a high-voltage terminal 804 is arranged at the bottom of the fusion pipe body; a fuse 802 is arranged in the fusion tube body 801, and the top and the bottom of the fuse 802 are respectively connected with a movable contact 803 and a high-voltage terminal 804; an O-shaped ring pull ring 805 is arranged on the outer side of the top of the melting pipe 8, and the bottom of the melting pipe 8 is provided with a rocker arm ornament 502; the fusion tube 8 further comprises a current detection module, and a low-end current detection circuit and a high-end current detection circuit are arranged in the current detection module.

An electric drop-out fuse comprises a fusion tube 8, and further comprises a driving mechanism 1, an insulating push-pull rod 3, a rocker arm 5, an electric push rod 6, an electric brake-separating hook 7 and a rubber insulating strut 10; wherein:

the tail end of the insulating push-pull rod 3 is connected with a rocker arm 5, the rocker arm 5 is arranged on the lower pile head 4, one end of the rocker arm 5 is provided with an electric push rod 6, the top of the electric push rod 6 is provided with an electric brake separating hook 7, and a hook body of the electric brake separating hook 7 extends into an O-shaped ring pull ring 805 of the fusion pipe 8; the fusion pipe 8 is mounted on the upper pile head 9.

The rocker arm 5 comprises a rocker arm base 501 and a rocker arm swinging piece 502; the rocker arm base 501 is arranged on the lower pile head 4, the rocker arm swinging piece 502 is hinged on the rocker arm base 501, and the electric push rod 6 is arranged on the rocker arm swinging piece 502.

The utility model also has the following additional technical characteristics:

the technical scheme of the utility model is further specifically optimized: the driving mechanism 1 comprises a mounting plate 101, a motor 102 is mounted at the rear part of the mounting plate 101, and an output shaft of the motor 102 penetrates through the mounting plate 101 and is connected with a gear 103; a rack 104 is arranged at the front part of the mounting plate 101, two ends of the rack 104 are fixed in a limiting way through a U-shaped fixing groove 105, and the rack 104 can freely slide between the two U-shaped fixing grooves 105; the gear 103 and the rack 104 form a mechanical transmission structure; an insulating push-pull rod 3 is arranged at the tail part of the rack 104.

The technical scheme of the utility model is further specifically optimized: the mounting plate 101 of the driving mechanism 1 is mounted on the mounting base 2, and the mounting base 2 is mounted on the high-voltage cable frame.

The technical scheme of the utility model is further specifically optimized: the pile further comprises a lower pile head 4 and an upper pile head 9; the lower pile head 4 and the upper pile head 9 are mounted on a high-voltage cable frame.

The technical scheme of the utility model is further specifically optimized: the fixed ends of the melting pipe 8 and the rocker arm 5 are coaxially arranged, namely, the bottoms of the melting pipe 8 and the rocker arm 5 are respectively provided with a rocker arm swinging part 502, the driving mechanism 1 drives the rocker arm 5 to rotate, and meanwhile, the rocker arm 5 drives the melting pipe 8 to rotate around the same point with the rocker arm.

Compared with the prior art, the utility model has the advantages that:

advantage 1: the fusion tube has the current detection function, and fusion tube 8 still includes current detection module, and current detection module inside is provided with low-end and examines the flow circuit and high-end and examine the flow circuit. The current detecting resistor of the low-end current detecting circuit is connected to the ground in series, and the current detecting resistor of the high-end current detecting circuit is connected to the high-voltage end in series. The low-end current detection mode adds an extra wire winding resistor in the ground wire loop, and the high-end current detection mode is used for processing larger common mode signals. In the low-side current detection circuit shown in fig. 10, the low-side current detection operational amplifier uses the ground level as the reference level, and the current detection resistor is connected to the positive phase terminal. Common mode signals in the input signals of the op-amp. The high-end current detection circuit shown in fig. 11 is directly connected to a power supply end, can detect any fault of a subsequent loop and take corresponding protection measures, and is particularly suitable for the field of automatic control application.

Advantage 2: the utility model effectively solves the problem of poor stability of the existing driving mechanism during the action, the gear 103 and the rack 104 form a mechanical transmission structure, the structural design is reasonable and simple, the connecting parts are reduced, the stability is good, and the occupied space is small; meanwhile, the bottoms of the melting pipe 8 and the rocker arm 5 are respectively provided with a rocker arm swinging piece 502, the driving mechanism 1 drives the rocker arm 5 to rotate, and meanwhile, the rocker arm 5 drives the melting pipe 8 to rotate around the same point, so that the rocker arm 5 and the melting pipe 8 do not generate relative motion in the opening and closing actions, and the stability is high; it is ensured that the rocker arm 5 and the fusion tube 8 tube rotate in the same radian when disconnected, so that the hook body of the electric brake-separating hook 7 is prevented from being separated from the O-ring pull ring 805.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an electric drop-out fuse of the present utility model;

FIG. 2 is a schematic diagram showing the operation state of the electric drop-out fuse of the present utility model;

FIG. 3 is a schematic view showing an open state of the electric drop-out fuse of the present utility model;

fig. 4 is a schematic structural view of a driving mechanism 1 according to the present utility model;

FIG. 5 is a schematic view of a rocker arm base 501 according to the present utility model;

FIG. 6 is a schematic diagram of a rocker arm swing 502 according to the present utility model;

FIG. 7 is a schematic view of the structure of the fusion pipe 8 of the present utility model;

fig. 8 is a schematic structural diagram of a moving contact 803 and an O-ring pull ring 805 according to the present utility model;

fig. 9 is a schematic structural view of a high voltage terminal 804 according to the present utility model;

FIG. 10 is a schematic diagram of a low-side current sensing circuit according to the present utility model;

fig. 11 is a schematic diagram of a high-side current detection circuit according to the present utility model.

Reference numerals illustrate: the device comprises a driving mechanism 1, a mounting base 2, an insulating push-pull rod 3, a lower pile head 4, a rocker arm 5, an electric push rod 6, an electric brake separating hook 7, a fusion pipe 8, an upper pile head 9 and a rubber insulating support column 10.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order to provide a more thorough understanding of the present disclosure, and to fully convey the scope of the disclosure to those skilled in the art. While the drawings illustrate exemplary embodiments of the present disclosure, it should be understood that the utility model is not limited to the embodiments set forth herein.

The fusion pipe with the current detection function comprises a fusion pipe body 801, wherein the fusion pipe body 801 is of a hollow pipe body structure, a movable contact 803 is arranged at the top of the fusion pipe body 801, and a high-voltage terminal 804 is arranged at the bottom of the fusion pipe body; a fuse 802 is arranged in the fusion tube body 801, and the top and the bottom of the fuse 802 are respectively connected with a movable contact 803 and a high-voltage terminal 804; an O-ring pull ring 805 is arranged on the outer side of the top of the melting pipe 8, and the bottom of the melting pipe 8 is provided with a rocker arm ornament 502.

The current detecting resistor of the low-end current detecting circuit is connected to the ground in series, and the current detecting resistor of the high-end current detecting circuit is connected to the high-voltage end in series. The low-end current detection mode adds an extra wire winding resistor in the ground wire loop, and the high-end current detection mode is used for processing larger common mode signals.

In the low-side current detection circuit shown in fig. 10, the low-side current detection operational amplifier uses the ground level as the reference level, and the current detection resistor is connected to the positive phase terminal. Common mode signals in the input signals of the op-amp.

The high-end current detection circuit shown in fig. 11 is directly connected to a power supply end, can detect any fault of a subsequent loop and take corresponding protection measures, and is particularly suitable for the field of automatic control application.

An electric drop-out fuse comprises a driving mechanism 1, an insulating push-pull rod 3, a rocker arm 5, an electric push rod 6, an electric brake-separating hook 7, a fusion tube 8 and a rubber insulating strut 10;

the mounting plate 101 of the driving mechanism 1 is mounted on the mounting base 2, and the mounting base 2 is mounted on the high-voltage cable frame. The tail end of the insulating push-pull rod 3 is connected with a rocker arm 5, the rocker arm 5 is arranged on the lower pile head 4, one end of the rocker arm 5 is provided with an electric push rod 6, the top of the electric push rod 6 is provided with an electric brake separating hook 7, and a hook body of the electric brake separating hook 7 extends into an O-shaped ring pull ring 805 of the fusion pipe 8; the fusion pipe 8 is mounted on the upper pile head 9.

The electric drop-out fuse also comprises a lower pile head 4 and an upper pile head 9; the lower pile head 4 and the upper pile head 9 are mounted on a high-voltage cable frame.

The driving mechanism 1 comprises a mounting plate 101, a motor 102 is mounted at the rear part of the mounting plate 101, and an output shaft of the motor 102 penetrates through the mounting plate 101 and is connected with a gear 103; a rack 104 is arranged at the front part of the mounting plate 101, two ends of the rack 104 are fixed in a limiting way through a U-shaped fixing groove 105, and the rack 104 can freely slide between the two U-shaped fixing grooves 105; the gear 103 and the rack 104 form a mechanical transmission structure; an insulating push-pull rod 3 is arranged at the tail part of the rack 104.

The rocker arm 5 comprises a rocker arm base 501 and a rocker arm swinging piece 502; the rocker arm base 501 is arranged on the lower pile head 4, the rocker arm swinging piece 502 is hinged on the rocker arm base 501, and the electric push rod 6 is arranged on the rocker arm swinging piece 502.

The fixed ends of the melting pipe 8 and the rocker arm 5 are coaxially arranged, namely, the bottoms of the melting pipe 8 and the rocker arm 5 are respectively provided with a rocker arm swinging part 502, the driving mechanism 1 drives the rocker arm 5 to rotate, and meanwhile, the rocker arm 5 drives the melting pipe 8 to rotate around the same point, so that the rocker arm 5 and the melting pipe 8 do not generate relative motion in the opening and closing actions, and the stability is high; it is ensured that the rocker arm 5 and the fusion tube 8 tube rotate in the same radian when disconnected, so that the hook body of the electric brake-separating hook 7 is prevented from being separated from the O-ring pull ring 805.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model are clearly and completely described above in conjunction with the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Accordingly, the above detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Claims (6)

1. A fusion tube with current detection function, its characterized in that: the smelting pipe (8) comprises a smelting pipe body (801), wherein the smelting pipe body (801) is of a hollow pipe body structure, a moving contact (803) is arranged at the top of the smelting pipe body (801), and a high-voltage wiring terminal (804) is arranged at the bottom of the smelting pipe body; a fuse (802) is arranged in the fusion tube body (801), and the top and the bottom of the fuse (802) are respectively connected with the moving contact (803) and the high-voltage terminal (804); an O-shaped ring pull ring (805) is arranged on the outer side of the top of the melting pipe (8), and a rocker arm ornament (502) is arranged at the bottom of the melting pipe (8); the fusion tube (8) further comprises a current detection module, and a low-end current detection circuit and a high-end current detection circuit are arranged in the current detection module.

2. An electric drop-out fuse comprising a fusion tube (8) as claimed in claim 1, characterized in that: the electric brake release mechanism also comprises a driving mechanism (1), an insulating push-pull rod (3), a rocker arm (5), an electric push rod (6), an electric brake release hook (7) and a rubber insulating strut (10); wherein:

the tail end of the insulating push-pull rod (3) is connected with a rocker arm (5), the rocker arm (5) is arranged on the lower pile head (4), one end of the rocker arm (5) is provided with an electric push rod (6), the top of the electric push rod (6) is provided with an electric brake separating hook (7), and a hook body of the electric brake separating hook (7) stretches into an O-shaped ring pull ring (805) of the fusion pipe (8); the fusion pipe (8) is arranged on the upper pile head (9);

the rocker arm (5) comprises a rocker arm base (501) and a rocker arm swinging piece (502); the rocker arm base (501) is arranged on the lower pile head (4), the rocker arm swinging part (502) is hinged to the rocker arm base (501), and the electric push rod (6) is arranged on the rocker arm swinging part (502).

3. An electrically operated drop-out fuse as set forth in claim 2, wherein: the driving mechanism (1) comprises a mounting plate (101), a motor (102) is mounted at the rear part of the mounting plate (101), and an output shaft of the motor (102) penetrates through the mounting plate (101) and is connected with a gear (103); a rack (104) is arranged at the front part of the mounting plate (101), two ends of the rack (104) are fixed in a limiting way through U-shaped fixing grooves (105), and the rack (104) can slide between the two U-shaped fixing grooves (105) freely; the gear (103) and the rack (104) form a mechanical transmission structure; an insulating push-pull rod (3) is arranged at the tail part of the rack (104).

4. An electrically operated drop-out fuse as claimed in claim 3, wherein: the mounting plate (101) of the driving mechanism (1) is mounted on the mounting base (2), and the mounting base (2) is mounted on the high-voltage cable frame.

5. An electrically operated drop-out fuse as set forth in claim 2, wherein: the pile further comprises a lower pile head (4) and an upper pile head (9); the lower pile head (4) and the upper pile head (9) are arranged on a high-voltage cable frame.

6. An electrically operated drop-out fuse as set forth in claim 2, wherein: the fixed ends of the melting pipe (8) and the rocker arm (5) are coaxially arranged, namely, the bottom of the melting pipe (8) and the bottom of the rocker arm (5) are respectively provided with a rocker arm swinging part (502), the driving mechanism (1) drives the rocker arm (5) to rotate, and meanwhile, the rocker arm (5) drives the melting pipe (8) to rotate around the same point with the same.