A fixed frame circuit breaker with a current diversion fixture

Abstract

The utility model relates to the fixed cover field of fixed frame circuit breaker discloses a kind of drainage fixed cover for fixed frame circuit breaker, including ionization suppression net structure, drainage fixed cover, both mutually combined use play role, when fixed circuit breaker is used, the gas with electric arc produced by breaking will flow from the corresponding air passage of three phases, ionization suppression net A and ionization suppression net B will adsorb arc, and the gas after arc removal is then accelerated to discharge to fixed frame circuit breaker outside using the gas pressure after the size division of three areas of outlet gas large area, outlet gas middle area, outlet gas small area, drainage fixed cover also correspond to the three pieces of space of the air passage of three phases in fixed frame circuit breaker respectively, avoid arc to cause interphase breakdown, will not damage to matching equipment.

Description

Technical Field

[0001] This utility model relates to the field of fixed cover for fixed frame circuit breakers, specifically a current-draining fixed cover for fixed frame circuit breakers. Background Technology

[0002] According to the installation method, existing frame circuit breakers can be divided into fixed frame circuit breakers and drawer-type frame circuit breakers. Compared with drawer-type frame circuit breakers, fixed frame circuit breakers do not have external drawer base protection, and the arc-extinguishing chamber is exposed to the air. When the circuit breaker is in use, the arc generated during the break will splash out from the arc-extinguishing chamber, which will damage the supporting equipment. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a current-draining fixing cover for a fixed frame circuit breaker to solve the above problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0005] A current-draining fixing cover for a fixed frame circuit breaker includes a de-detached grid structure and a current-draining fixing cover. The de-detached grid structure is arranged in a cross-shaped array within the current-draining fixing cover.

[0006] The de-offset network structure includes de-offset network A and de-offset network B. De-offset network A includes a network A cell, a network A region, and a network A plug slot. The network A cell and network A region are distributed on both sides of the plug slot. De-offset network B includes a network B cell, a network B region, a network B plug slot, and a network B right-angle slot. The network B cell and network B region are distributed on both sides of the network B plug slot. The network B right-angle slot is located on one side of the network B cell. The network A plug slot and the network B plug slot are interlocked. When a fixed circuit breaker is in use, the gas that generates an electric arc during the break will flow out from the corresponding gas channels of the three phases. The deionization network A and deionization network B will absorb the electric arc. The gas after the electric arc is removed will be accelerated to be discharged outside the fixed frame circuit breaker by the gas pressure divided into three areas: the large gas outlet area, the medium gas outlet area, and the small gas outlet area. The flow-guiding fixed cover also corresponds to the three spaces of the gas channels of the three phases in the fixed frame circuit breaker, to prevent the electric arc from causing phase-to-phase breakdown and to prevent damage to the supporting equipment.

[0007] Preferably, the drainage fixing cover includes two air outlets on both sides and a central connecting port. The central connecting port is located in the middle of the inner side of the drainage fixing cover, and its two ends extend to connect to the two air outlets on both sides.

[0008] Preferably, the dual air outlets are located on both sides of the drainage fixing cover.

[0009] Preferably, both the de-free net A and the de-free net B are made of metal.

[0010] Preferably, both the de-free net A and the de-free net B are provided with an array of adsorption holes.

[0011] Preferably, the area corresponding to the network A region and the network B region is the large air outlet region.

[0012] Preferably, the area corresponding to the network A cell and the network B region is the air outlet area.

[0013] Preferably, the area corresponding to the network A region and the network B region is the small air outlet region.

[0014] Preferably, the area between network A cell and network B cell is also a small air outlet area.

[0015] Preferably, the small air outlet area faces the side of the central connection port.

[0016] Compared to existing technologies, this utility model discloses a current-draining fixing cover for a fixed frame circuit breaker, including an anti-ionization network structure and a current-draining fixing cover. The two work together to function. When the fixed circuit breaker is in use, the gas with an electric arc generated during the break will flow out from the corresponding gas channels of the three phases. The anti-ionization network A and anti-ionization network B will adsorb the electric arc. The gas after the electric arc is removed is accelerated to be discharged outside the fixed frame circuit breaker by the gas pressure divided into three areas: the large gas outlet area, the medium gas outlet area, and the small gas outlet area. The current-draining fixing cover also corresponds to the three spaces of the gas channels of the three phases in the fixed frame circuit breaker, avoiding phase-to-phase breakdown caused by the electric arc and preventing damage to the supporting equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the current-draining fixing cover for a fixed frame circuit breaker according to the present invention;

[0018] Figure 2 This is a schematic diagram of the current-draining fixing cover for a fixed frame circuit breaker according to the present invention;

[0019] Figure 3 This is an exploded view of the structure of the present invention for eliminating free netting.

[0020] Figure 4 This is a schematic diagram of the structure of the drainage fixing cover of this utility model;

[0021] Figure 5 This is a schematic diagram showing the division of the three areas of the present invention: the large air outlet area, the medium air outlet area, and the small air outlet area. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] A current-draining fixing cover for a fixed frame circuit breaker includes a de-detached grid structure 1 and a current-draining fixing cover 2. The de-detached grid structure 1 is arranged in a cross-shaped array within the current-draining fixing cover 2. The de-detached grid structure 1 includes a de-detached grid A11 and a de-detached grid B12. The de-detached grid A11 includes a grid A sub-area 111, a grid A large area 112, and a grid A plug-in slot 113. The grid A sub-area 111 and the grid A large area 112 are distributed on both sides of the plug-in slot. The de-detached grid B12 includes a grid B sub-area 121, a grid B large area 122, a grid B plug-in slot 123, and a grid B right-angle slot 124. The grid B sub-area 121 and the grid B large area 122 are distributed on both sides of the grid B plug-in slot 123. The grid B right-angle slot 124 is located on one side of the grid B sub-area 121. The grid A plug-in slot 113 and the grid B plug-in slot 123 are interlocked.

[0024] The flow-guiding and fixing cover 2 includes two side air outlets 21 and a central connecting port 22. The central connecting port 22 is located in the middle of the inner side of the flow-guiding and fixing cover 2, and its two ends extend to connect to the two side air outlets 21. The two side air outlets 21 are located on both sides of the flow-guiding and fixing cover 2. Both the deionization net A11 and the deionization net B12 are made of metal. Both the deionization net A11 and the deionization net B12 are provided with an array of adsorption holes for adsorbing electric arcs in charged gas.

[0025] The area between Network A Region 112 and Network B Region 122 is the large air outlet region 100.

[0026] The area between Network A cell 111 and Network B region 122 is the gas outlet region 200.

[0027] The area between Network A region 112 and Network B region 121 is the gas outlet area 300.

[0028] The area between network A cell 111 and network B cell 121 is also the small air outlet area 300.

[0029] The space of the large air outlet area 100 is larger than that of the medium air outlet area 200, and the space of the medium air outlet area 200 is larger than that of the small air outlet area 300. The small air outlet area 300 faces the central connecting port 22 to facilitate the discharge of gas from the central airway in the three-phase airway.

[0030] The anti-ionization network structure 1 is arranged in a cross-shaped array within the current-draining fixing cover 2, forming three spaces corresponding to the gas channels of each of the three phases in the fixed frame circuit breaker. This avoids phase-to-phase breakdown caused by electric arc. When gas is discharged from the left and right gas channels, the charged gas enters the large gas discharge area 100, the medium gas discharge area 200, and the small gas discharge area 300 respectively. Due to the different sizes of the three areas, the principle of gas pressure can be used to accelerate the discharge of the gas after the arc is absorbed by the anti-ionization network A11 and the anti-ionization network B12 from the double gas outlets 21. In addition, when the gas carrying the arc is discharged from the three-phase middle gas channel of the fixed frame circuit breaker, the gas pressure after the arc is absorbed by the anti-ionization network A11 and the anti-ionization network B12 is still used to accelerate the discharge of the gas after the arc is absorbed by the anti-ionization network A11 and the anti-ionization network B12 from the middle connecting port 22 to the double gas outlets 21.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A current-draining fixing cover for a fixed frame circuit breaker, characterized in that: It includes a de-loosening mesh structure (1) and a drainage fixing cover (2). The de-loosening mesh structure (1) is arranged in a cross-shaped array within the drainage fixing cover (2). The de-offline network structure (1) includes de-offline network A (11) and de-offline network B (12). De-offline network A (11) includes network A cell (111), network A large area (112), and network A plug slot (113). Network A cell (111) and network A large area (112) are distributed on both sides of the plug slot. De-offline network B (12) includes network B cell (121), network B large area (122), network B plug slot (123), and network B right angle slot (124). Network B cell (121) and network B large area (122) are distributed on both sides of network B plug slot (123). Network B right angle slot (124) is located on one side of network B cell (121). Network A plug slot (113) and network B plug slot (123) are plugged into each other.

2. The current-draining fixing cover for a fixed frame circuit breaker according to claim 1, characterized in that: The drainage fixing cover (2) includes two side air outlets (21) and a central connecting port (22). The central connecting port (22) is located in the middle of the inner side of the drainage fixing cover (2), and its two ends extend to connect to the two side air outlets (21).

3. The current-draining fixing cover for a fixed frame circuit breaker according to claim 2, characterized in that: The dual air outlets (21) are located on both sides of the drainage fixing cover (2).

4. The current-draining fixing cover for a fixed frame circuit breaker according to claim 1, characterized in that: Both the de-free net A (11) and the de-free net B (12) are made of metal.

5. The current-draining fixing cover for a fixed frame circuit breaker according to claim 3, characterized in that: Both the de-free net A (11) and the de-free net B (12) are provided with adsorption holes arranged in an array.

6. The current-draining fixing cover for a fixed frame circuit breaker according to claim 5, characterized in that: The area between Network A (112) and Network B (122) is the large air outlet area (100).

7. The current-draining fixing cover for a fixed frame circuit breaker according to claim 6, characterized in that: The area between Network A cell (111) and Network B region (122) is the gas outlet region (200).

8. The current-draining fixing cover for a fixed frame circuit breaker according to claim 7, characterized in that: The area between the network A region (112) and the network B region (121) is the gas outlet area (300).

9. The current-draining fixing cover for a fixed frame circuit breaker according to claim 8, characterized in that: The area between network A cell (111) and network B cell (121) is also the gas outlet area (300).

10. The current-draining fixing cover for a fixed frame circuit breaker according to claim 9, characterized in that: The small air outlet area (300) faces the central connecting port (22).

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