Reclosing circuit breaker

Abstract

The reclosing circuit breaker comprises a shell, a first wiring terminal, a second wiring terminal, a static contact and a moving contact, wherein the first wiring terminal, the second wiring terminal, the static contact and the moving contact are arranged on the shell; an electromagnetic coil is also arranged in the shell; the electromagnetic coil comprises an insulating tube, a wire is wound on the outer wall face of the insulating tube, and the wire is wound on the insulating tube in a single-strand mode. One end of the wire is connected with the first wiring terminal, and the other end of the wire is wound around the insulating tube and then is connected with the static contact. The flat wire is wound on the insulating tube in a single-strand manner, so that the resistance value can be reduced while the normal work of the electromagnetic coil is ensured, and the generation of heat is reduced; particularly, a first shunt wire is arranged between the static contact and the first wiring terminal. And the first shunting line is used for shunting, so that the temperature rise speed of the equipment can be further reduced. On the basis, the phenomena that the temperature rise speed is too high and the breaking capacity is virtually marked in a 125A small reclosing circuit breaker in the market can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a reclosing circuit breaker. Background Art

[0002] At present, the 125A small reclosing circuit breakers on the market generally have the problem of too fast temperature rise and false breaking capacity. Utility Model Content

[0003] The purpose of the utility model is to provide a reclosing circuit breaker to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a reclosing circuit breaker, comprising a shell, a first terminal, a second terminal, a static contact and a moving contact arranged on the shell; an electromagnetic coil is also arranged in the shell, and the electromagnetic coil comprises an insulating tube, and a wire is wound on the outer wall surface of the insulating tube; wherein the wire is flat and a single strand is wound on the insulating tube; one end of the wire is connected to the first terminal, and the other end of the wire is wound around the insulating tube and connected to the static contact.

[0005] As a preferred technical solution of the utility model: it also includes a first shunt line; one end of the first shunt line is connected to the first wiring terminal, and the other end of the first shunt line is connected to the static contact.

[0006] As a preferred technical solution of the utility model: it also includes a second shunt line; one end of the second shunt line is connected to the moving contact, and the other end of the second shunt line is connected to the second wiring terminal.

[0007] As a preferred technical solution of the utility model: contact parts are provided on the facing surfaces of the static contact and the moving contact, and the contact part on the static contact contacts or separates from the contact part on the moving contact to realize the conduction or disconnection of the circuit.

[0008] As a preferred technical solution of the utility model: the contact portion on the moving contact is made of silver and is welded on the moving contact, and the thickness of the contact portion on the moving contact is 3 mm.

[0009] As a preferred technical solution of the present utility model: the diameter of the first shunt line and the second shunt line is 3 mm.

[0010] By adopting the above technical scheme, the beneficial effect of the utility model is as follows: by using a flat wire, a single strand is wound on an insulating tube, which can reduce the resistance value while ensuring the normal operation of the electromagnetic coil, thereby reducing the heat generation to avoid the electromagnetic coil heating too quickly; based on this, the common problem of 125A small reclosing circuit breakers on the market, such as too fast temperature rise and false breaking capacity, can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the electromagnetic coil of the utility model;

[0013] Figure 3 for Figure 1 A local enlarged schematic diagram of point A in the middle.

[0014] In the figure: 1. housing; 2. electromagnetic coil; 3. first terminal; 4. second terminal; 5. second shunt line; 6. conductor; 7. first shunt line; 8. static contact; 9. moving contact; 10. contact part; 11. insulating tube. DETAILED DESCRIPTION

[0015] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0016] See also Figure 1-3 The utility model provides an embodiment: a reclosing circuit breaker, comprising a housing 1, a first terminal 3, a second terminal 4, a static contact 8 and a moving contact 9 arranged on the housing 1; an electromagnetic coil 2 is also arranged in the housing 1, and the electromagnetic coil 2 comprises an insulating tube 11, and a wire 6 is wound on the outer wall surface of the insulating tube 11; wherein the wire 6 is flat and a single strand is wound on the insulating tube 11; one end of the wire 6 is connected to the first terminal 3, and the other end of the wire 6 is connected to the static contact 8 after being wound around the insulating tube 11.

[0017] In summary, by using a flat wire 6 and winding it in a single strand on the insulating tube 11, the resistance value of the electromagnetic coil 2 during operation can be reduced while ensuring the normal operation of the electromagnetic coil 2, thereby reducing the heat generation to avoid the electromagnetic coil 2 from heating up too quickly. Based on this, the problem of the temperature rise speed being too fast and the breaking capacity being falsely marked, which is common in small 125A reclosing circuit breakers on the market, can be solved.

[0018] Furthermore, a first shunt line 7 is included; one end of the first shunt line 7 is connected to the first terminal 3, and the other end of the first shunt line 7 is connected to the static contact 8. Therefore, the first shunt line 7 can be used to shunt the electromagnetic coil 2, so the heating speed of the device can be further reduced.

[0019] Furthermore, it also includes a second shunt line 5 ; one end of the second shunt line 5 is connected to the moving contact 9 , and the other end of the second shunt line 5 is connected to the second wiring terminal 4 .

[0020] To sum up, since the first shunt line 7 can shunt the current of the electromagnetic coil 2 between the static contact 8 and the first terminal 3, the second shunt line 5 can realize the current of the electromagnetic coil 2 between the moving contact 9 and the second terminal 4, and then the resistance value at both ends of the electromagnetic coil 2 can be synchronously reduced, so as to further reduce the heating rate of the equipment.

[0021] In addition, in order to ensure the circuit is stable and reliable while further reducing the resistance value, the diameter of the first shunt line 7 and the second shunt line 5 is 3 mm.

[0022] On the basis of the above scheme, since contact portions 10 are provided on the facing surfaces of the static contact 8 and the moving contact 9, and the contact portion 10 on the static contact 8 is in contact with or separated from the contact portion 10 on the moving contact 9 to realize the conduction or disconnection of the circuit, the contact portion 10 can be used to avoid direct contact between the moving and static contacts, thereby reducing the phenomenon of ablation between the moving and static contacts.

[0023] Specifically, since the contact portion 10 on the moving contact 9 is made of silver and welded on the moving contact 9, and the thickness of the contact portion 10 on the moving contact 9 is 3 mm, based on this, the contact portion 10 with a thickness of 3.0 mm is welded on the moving contact 9, so that the temperature rise rate of the product can be further reduced while being burn-resistant.

[0024] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A reclosing circuit breaker, characterized in that: It comprises a housing (1), a first wiring terminal (3), a second wiring terminal (4), a stationary contact (8) and a moving contact (9) arranged on the housing (1); An electromagnetic coil (2) is also provided in the housing (1), and the electromagnetic coil (2) comprises an insulating tube (11), and a wire (6) is wound on the outer wall surface of the insulating tube (11); wherein the wire (6) is flat and is wound on the insulating tube (11) in a single strand; One end of the wire (6) is connected to the first wiring terminal (3), and the other end of the wire (6) is connected to the static contact (8) after being wound around the insulating tube (11).

2. A reclosing circuit breaker according to claim 1, characterized in that: It also comprises a first shunt line (7); one end of the first shunt line (7) is connected to the first wiring terminal (3), and the other end of the first shunt line (7) is connected to the stationary contact (8).

3. A reclosing circuit breaker according to claim 2, characterized in that: It also comprises a second shunt line (5); one end of the second shunt line (5) is connected to the moving contact (9), and the other end of the second shunt line (5) is connected to the second wiring terminal (4).

4. A reclosing circuit breaker according to claim 3, characterized in that: The static contact (8) and the moving contact (9) are both provided with contact portions (10) on their facing surfaces, and the circuit is turned on or off by the contact portion (10) on the static contact (8) coming into contact with or separating from the contact portion (10) on the moving contact (9).

5. A reclosing circuit breaker according to claim 4, characterized in that: The contact portion (10) on the moving contact (9) is made of silver and is welded on the moving contact (9), and the thickness of the contact portion (10) on the moving contact (9) is 3 mm.

6. A reclosing circuit breaker according to claim 5, characterized in that: The diameters of the first shunt line (7) and the second shunt line (5) are 3 mm.

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