Circuit breaker conductive group chamber exhaust device

Abstract

The invention provides an exhaust device for a conductive group chamber of a circuit breaker, and belongs to the technical field of circuit breakers. The frame circuit breaker comprises a frame circuit breaker shell, a conductive group chamber provided with a busbar moving and static contact assembly is arranged in the frame circuit breaker shell, and an exhaust mechanism is arranged in the conductive group chamber. The exhaust mechanism is additionally arranged in the conductive group chamber of the frame circuit breaker shell, so that the exhaust efficiency of hot air can be effectively improved, the air temperature in the conductive group chamber can be prevented from rising too high, and electrical faults are prevented; the distance between the exhaust mechanism and the bus bar moving and static contact assembly is far smaller than the distance between the original exhaust port at the lower end of the conductive group chamber and the bus bar moving and static contact assembly, so that the hot air exhaust efficiency can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers and relates to an exhaust device for a conducting group chamber of a circuit breaker. Background Art

[0002] In the conductive group chamber of the frame circuit breaker, although there are arc extinguishing hood and exhaust holes at the upper end and exhaust holes at the lower end, the arc and hot air generated when the moving and static contacts in the busbar moving and static contact assembly collide and contact cannot be quickly discharged due to the large distance between them and the exhaust holes, which can easily cause the temperature in the chamber to continue to rise, resulting in electrical faults and making the circuit breaker unable to operate normally.

[0003] For example, a Chinese patent discloses an intelligent circuit breaker [application number: 202122058251.3], including a circuit breaker frame, a box cover hinged on one side of the top of the circuit breaker frame, an exhaust box fixedly installed on the top of the inner wall of the circuit breaker frame, a temperature control switch fixedly installed on one side of the middle of the inner wall of the circuit breaker frame, a plurality of fixed frames fixedly connected to the bottom of the inner wall of the exhaust box, exhaust fans installed on the tops of the plurality of fixed frames, protective boxes fixedly connected to both sides of the inner wall of the circuit breaker frame, and pressure-resistant mechanisms installed at the top and the bottom of the circuit breaker frame.

[0004] content

[0005] The purpose of the present invention is to provide a circuit breaker conductive group chamber exhaust device in view of the above problems.

[0006] In order to achieve the above purpose, the following technical solutions are adopted:

[0007] A circuit breaker conductive group chamber exhaust device comprises a frame circuit breaker housing, wherein a conductive group chamber with a busbar movable and static contact assembly installed is arranged in the frame circuit breaker housing, and an exhaust mechanism is arranged in the conductive group chamber.

[0008] In the above-mentioned exhaust device for the conducting group chamber of a circuit breaker, the exhaust mechanism is arranged directly below the moving and stationary contact assembly of the busbar.

[0009] In the above-mentioned circuit breaker conductive group chamber exhaust device, the exhaust mechanism includes a flute-shaped exhaust member, and the flute-shaped exhaust member is provided with an air intake structure on the side facing the busbar movable and static contact assembly. Both ends of the flute-shaped exhaust member pass through the conductive group chamber and are connected to the outside of the frame circuit breaker housing.

[0010] In the above-mentioned circuit breaker conductive group chamber exhaust device, an exhaust channel is axially arranged in the flute-shaped exhaust member.

[0011] In the above-mentioned circuit breaker conductive group chamber exhaust device, the air intake structure includes a plurality of air intake holes connecting the conductive group chamber and the exhaust channel.

[0012] In the above-mentioned exhaust device for the conducting group chamber of a circuit breaker, the air inlet holes are radially arranged on the flute-shaped exhaust member.

[0013] In the above-mentioned circuit breaker conductive group chamber exhaust device, a plurality of conductive group chambers are arranged in the frame circuit breaker housing and the plurality of conductive group chambers are connected in a straight line, the flute-shaped exhaust member axially penetrates the plurality of conductive group chambers and the outer end extends to the outside of the frame circuit breaker housing, and an installation hole for installing the flute-shaped exhaust member is provided in the frame circuit breaker housing.

[0014] In the above-mentioned circuit breaker conductive group chamber exhaust device, the outer end of the flute-shaped exhaust member is flush with the outer side wall of the frame circuit breaker housing.

[0015] In the above-mentioned circuit breaker conductive group chamber exhaust device, the frame circuit breaker housing is made of bakelite.

[0016] In the above-mentioned circuit breaker conductive group chamber exhaust device, the flute-shaped exhaust member is made of high temperature resistant material.

[0017] Compared with the existing technology, the advantages of this method are:

[0018] 1. An additional exhaust mechanism is provided in the conductive group chamber of the frame circuit breaker housing, which can effectively increase the efficiency of hot gas discharge and prevent the temperature in the conductive group chamber from rising too high, thereby preventing electrical faults.

[0019] 2. The distance between the exhaust mechanism and the busbar moving and static contact assembly is much smaller than the distance between the original exhaust port at the lower end of the conductive group chamber and the busbar moving and static contact assembly, which can improve the efficiency of hot gas exhaust.

[0020] 3. The arc and hot temperature generated by the collision of the moving and static contacts in the busbar moving and static contact assembly can enter the flute-shaped exhaust member through the air intake structure, and can be discharged from both ends of the flute-shaped exhaust member to the outside of the frame circuit breaker housing.

[0021] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external structure of the book;

[0023] Figure 2 This is a schematic diagram of the internal structure of the book;

[0024] Figure 3 This is a partial structural diagram of the book.

[0025] In the figure, the frame circuit breaker housing 1, the busbar moving and static contact assembly 2, the conductive group chamber 3, the exhaust mechanism 4, the flute-shaped exhaust member 5, the air intake structure 6, the exhaust channel 7, the air intake hole 8, and the mounting hole 9. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 3 As shown, a circuit breaker conductive group chamber exhaust device comprises a frame circuit breaker housing 1, wherein the frame circuit breaker housing 1 is provided with a conductive group chamber 3 in which a busbar movable and static contact assembly 2 is installed, and the conductive group chamber 3 is provided with an exhaust mechanism 4.

[0027] In the present invention, an additional exhaust mechanism is provided in the conductive group chamber 3 of the frame circuit breaker housing 1, which can effectively increase the exhaust efficiency of hot air, and can prevent the temperature in the conductive group chamber from rising too high, thereby preventing electrical faults.

[0028] Specifically, combined with Figure 2 As shown, the exhaust mechanism 4 is arranged directly below the busbar moving and static contact assembly 2, and the distance between the exhaust mechanism and the busbar moving and static contact assembly is much smaller than the distance between the original exhaust port at the lower end of the conductive group chamber and the busbar moving and static contact assembly, which can improve the efficiency of hot gas exhaust.

[0029] Specifically, combined with Figure 1-Figure 3 As shown, the exhaust mechanism 4 includes a flute-shaped exhaust member 5, and the flute-shaped exhaust member 5 is provided with an air intake structure 6 on the side facing the busbar moving and static contact assembly 2, and both ends of the flute-shaped exhaust member 5 penetrate the conductive group chamber 3 and communicate with the outside of the frame circuit breaker housing 1. The arc and hot temperature energy generated by the collision of the moving and static contacts in the busbar moving and static contact assembly 2 enter the flute-shaped exhaust member 5 through the air intake structure 6, and can be discharged from both ends of the flute-shaped exhaust member 5 to the outside of the frame circuit breaker housing.

[0030] Specifically, combined with Figure 1 and Figure 2 As shown, an exhaust passage 7 is axially arranged in the flute-shaped exhaust member 5, and the air intake structure 6 includes a plurality of air intake holes 8 connecting the conductive group chamber 3 and the exhaust passage 7. Hot air can enter the exhaust passage 7 from the air intake holes, and finally be discharged from the exhaust passage to the outside of the frame circuit breaker, so as to achieve the purpose of reducing the temperature in the conductive group chamber.

[0031] Preferably, combined Figure 2 As shown, the air inlet 8 is radially arranged on the flute-shaped exhaust member 5. The air inlet is radially arranged, and the exhaust channel is axially arranged to prevent the electric sparks generated by the collision of the moving and static contacts from entering through the air inlet and then escaping from the conductive group chamber.

[0032] Specifically, combined with Figure 1-Figure 3As shown, a plurality of conductive group chambers 3 are arranged in the frame circuit breaker housing 1 and the plurality of conductive group chambers 3 are connected in a straight line, the flute-shaped exhaust member 5 axially penetrates the plurality of conductive group chambers 3 and the outer end extends to the outside of the frame circuit breaker housing 1, and a mounting hole 9 for mounting the flute-shaped exhaust member 5 is arranged in the frame circuit breaker housing 1.

[0033] Preferably, the outer end of the flute-shaped exhaust member 5 is flush with the outer side wall of the frame circuit breaker housing 1 .

[0034] Preferably, the frame circuit breaker housing 1 is made of bakelite.

[0035] Preferably, the flute-shaped exhaust member 5 is made of a high temperature resistant material, which may be ceramic, but is not limited thereto.

[0036] The specific embodiments described herein are merely examples of the present invention. A person skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner without departing from the present invention or exceeding the scope defined by the appended claims.

[0037] Although this article uses the frame circuit breaker housing 1, busbar moving and static contact assembly 2, conductive group chamber 3, exhaust mechanism 4, flute-shaped exhaust member 5, air intake structure 6, exhaust channel 7, air intake hole 8, mounting hole 9, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of this invention; interpreting them as any additional limitation is contrary to the spirit of this invention.

Claims

1. A circuit breaker conductive group chamber exhaust device, comprising a frame circuit breaker housing (1), characterized in that: The frame circuit breaker housing (1) is provided with a conducting group chamber (3) in which a busbar moving and static contact assembly (2) is installed, and the conducting group chamber (3) is provided with an exhaust mechanism (4).

2. A circuit breaker conducting group chamber exhaust device according to claim 1, characterized in that: The exhaust mechanism (4) is arranged directly below the busbar moving and static contact assembly (2).

3. A circuit breaker conducting group chamber exhaust device according to claim 2, characterized in that: The exhaust mechanism (4) comprises a flute-shaped exhaust member (5), and an air intake structure (6) is provided on the side of the flute-shaped exhaust member (5) facing the busbar moving and static contact assembly (2). Both ends of the flute-shaped exhaust member (5) penetrate the conductive group chamber (3) and are connected to the outside of the frame circuit breaker housing (1).

4. A circuit breaker conducting group chamber exhaust device according to claim 3, characterized in that: An exhaust passage (7) is axially arranged inside the flute-shaped exhaust member (5).

5. A circuit breaker conducting group chamber exhaust device according to claim 4, characterized in that: The air intake structure (6) comprises a plurality of air intake holes (8) connecting the conductive group chamber (3) and the exhaust channel (7).

6. A circuit breaker conducting group chamber exhaust device according to claim 5, characterized in that: The air inlet holes (8) are radially arranged on the flute-shaped exhaust member (5).

7. The circuit breaker conducting group chamber exhaust device according to claim 3, characterized in that: A plurality of conductive group chambers (3) are arranged in the frame circuit breaker housing (1), and the plurality of conductive group chambers (3) are connected in a straight line. The flute-shaped exhaust member (5) axially penetrates the plurality of conductive group chambers (3) and the outer end extends to the outside of the frame circuit breaker housing (1). A mounting hole (9) for mounting the flute-shaped exhaust member (5) is arranged in the frame circuit breaker housing (1).

8. The circuit breaker conducting group chamber exhaust device according to claim 7, characterized in that: The outer end of the flute-shaped exhaust member (5) is flush with the outer side wall of the frame circuit breaker housing (1).

9. A circuit breaker conducting group chamber exhaust device according to any one of claims 1 to 8, characterized in that: The frame circuit breaker housing (1) is made of bakelite.

10. A circuit breaker conducting group chamber exhaust device according to any one of claims 3 to 8, characterized in that: The flute-shaped exhaust member (5) is made of high-temperature resistant material.

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