Solar photovoltaic circuit breaker contact system

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a solar photovoltaic circuit breaker contact system, which comprises a base, the back of the base is fixedly connected with a bottom plate through bolts, a plurality of radiating fins are mounted in the bottom plate, and one end, penetrating through the bottom plate, of each radiating fin is used for radiating. A notch channel and a mounting hole of a static contact assembly are mounted in the bottom plate, a fixing plate is mounted on one side of the base, a first screw is in threaded connection with the interior of the fixing plate and used for fixing the fixing plate and the base together, a dustproof net is inserted into the top of the fixing plate, and the fixing plate is mounted on the base through bolts. The dustproof net is inserted into the fixing groove, then the rotary button is rotated to drive the second screw rod to penetrate through the dustproof net to be inserted into the screw groove in the fixing plate, the dustproof net is installed, meanwhile, the cooling fins are protected, and therefore the situation that the cooling efficiency of the cooling fins is reduced due to the fact that dust falls on the cooling fins is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of control cabinets, and more specifically, to a circuit breaker contact system for solar photovoltaics. Background Art

[0002] With the increasing efforts in infrastructure construction such as new energy power generation, the application scenarios of DC switches are also increasing. For low-voltage electrical appliance manufacturers, since the development of a new DC switch requires a large investment, a long cycle and slow results, most companies use the original AC switch to improve it according to the wiring characteristics of DC, using multiple fractures in series to obtain a higher rated voltage to meet the requirements of the DC system, changing the mold opening to mold repair and adding some small parts, which greatly reduces the cost and time.

[0003] The current existing Chinese utility model "A circuit breaker contact system" with a technical disclosure number of "CN219435794U" achieves the purpose of dissipating internal heat to the outside by extending the heat sink through the notch channel out of the bottom plate assembly. However, the heat sink in the above-mentioned method is located outside the shell, and lacks protection and protection for the heat sink. When a large amount of dust accumulates on the heat sink, the heat dissipation efficiency of the heat sink is affected. Utility Model Content

[0004] In order to solve the problems raised in the above background technology, the utility model provides a solar photovoltaic circuit breaker contact system.

[0005] The utility model provides a solar photovoltaic circuit breaker contact system adopts the following technical solution: a solar photovoltaic circuit breaker contact system, including a base, the back of the base is fixedly connected to a bottom plate by bolts, a plurality of heat sinks are installed inside the bottom plate, and the heat sink passes through one end of the bottom plate for heat dissipation, a notch channel and a mounting hole of a static contact assembly are installed inside the bottom plate, a fixing plate is installed on one side of the base, and a screw rod 1 is connected to the internal thread of the fixing plate, and the screw rod 1 is used to fix the fixing plate and the base together, a dustproof net is plugged into the top of the fixing plate, and the dustproof net and the fixing plate are connected by a fixing mechanism.

[0006] Preferably, the static contact assembly includes a static contact block, a static contact point, a pad block, and an arc-striking sheet. The static contact block is installed inside the base plate by bolts, and a heat sink is installed on the surface of the static contact block. The static contact point is installed on the back of the static contact block. The bottom of the static contact point is fixedly connected to an arc-isolating plate, and the top of the arc-isolating plate is fixedly connected to an arc-striking sheet.

[0007] Preferably, a cushion block is fixedly connected between the two static contacts.

[0008] Preferably, the fixing mechanism comprises a rotating knob and a second screw rod, the dust screen is fixedly mounted on the fixing plate via the second screw rod, and the top of the second screw rod is fixedly connected with a rotating knob.

[0009] Preferably, a fixing groove matching the size of the dustproof net is formed on the top of the fixing plate, and a screw groove matching the size of the screw rod 2 is formed on the top of the fixing plate.

[0010] Preferably, a fixing hole is provided at the center of the surface of the stationary contact block, and the fixing hole is used to cooperate with the mounting hole in the base plate to fix the stationary contact block in the base plate.

[0011] In summary, the utility model includes the following beneficial technical effects:

[0012] The utility model installs the fixing plate on the base by means of bolts, then inserts the dustproof net into the fixing groove, and then rotates the rotating knob to drive the screw rod 2 to pass through the dustproof net and insert into the screw groove in the fixing plate, thereby completing the installation of the dustproof net and protecting the heat sink at the same time, thereby preventing dust from falling on the heat sink and causing the heat dissipation efficiency of the heat sink to be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 It is a schematic diagram of the front internal structure in an embodiment of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the dustproof net in the embodiment of the utility model;

[0016] Figure 4 It is a schematic diagram of the structure of screw rod 2 in the embodiment of the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the static contact block in the embodiment of the utility model;

[0018] Figure 6 It is a schematic diagram of the back structure of the static contact block in the embodiment of the utility model.

[0019] Explanation of the reference numerals: 1. base; 2. bottom plate; 3. heat sink; 4. static contact block; 41. static contact; 411. pad; 42. arc isolation plate; 43. arc starting plate; 5. fixing plate; 6. screw rod one; 7. fixing groove; 8. dust screen; 9. rotating knob; 10. screw rod two. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1-6 The utility model is described in further detail.

[0021] It should be noted that the drawings are schematic and not to scale. For the sake of clarity and convenience, the relative sizes and proportions of the parts shown in the drawings are exaggerated or reduced in size, and any size is only illustrative and not restrictive. In addition, the same reference symbol is used for the same structure, element or accessory appearing in more than two figures to reflect similar features.

[0022] The utility model embodiment discloses a solar photovoltaic circuit breaker contact system. Figure 1-6 A solar photovoltaic circuit breaker contact system comprises a base 1, a bottom plate 2 is fixedly connected to the back of the base 1 by bolts, a plurality of heat sinks 3 are installed inside the bottom plate 2, and the heat sink 3 passes through one end of the bottom plate 2 for heat dissipation, and a notch channel and a mounting hole for a static contact assembly are installed inside the bottom plate 2;

[0023] Reference Figure 5-6 The static contact assembly includes a static contact block 4, a static contact point 41, and an arc-striking sheet 43. The static contact block 4 is installed inside the bottom plate 2 by bolts, and the heat sink 3 is installed on the surface of the static contact block 4. The static contact point 41 is installed on the back of the static contact block 4. The bottom of the static contact point 41 is fixedly connected with an arc-isolating plate 42, and the top of the arc-isolating plate 42 is fixedly connected with an arc-striking sheet 43. A cushion block 411 is fixedly connected between the two static contacts 41. A fixing hole is opened at the center of the surface of the static contact block 4, and the fixing hole is used to cooperate with the mounting hole in the bottom plate 2 to fix the static contact block 4 in the bottom plate 2;

[0024] Reference Figure 1-4 A fixing plate 5 is installed on one side of the base 1, and a screw rod 6 is connected to the internal thread of the fixing plate 5. The screw rod 6 is used to fix the fixing plate 5 and the base 1 together. Ventilation windows are provided on all four sides of the fixing plate 5, and a dust screen is installed in the ventilation window. A dust screen 8 is plugged into the top of the fixing plate 5, and the dust screen 8 and the fixing plate 5 are connected by a fixing mechanism. The fixing mechanism includes a rotating button 9 and a screw rod 10. The dust screen 8 is fixedly installed on the fixing plate 5 by the screw rod 10. A fixing groove 7 matching the size of the dust screen 8 is provided on the top of the fixing plate 5. A rotating button 9 is fixedly connected to the top of the screw rod 10. A screw groove matching the size of the screw rod 10 is provided on the top of the fixing plate 5.

[0025] Specifically, the fixing plate 5 is installed on the base 1 by bolts, and then the dust screen 8 is inserted into the fixing groove 7, and then the rotating knob 9 is turned to drive the screw rod 10 to pass through the dust screen 8 and insert into the screw groove in the fixing plate 5, so as to complete the installation of the dust screen 8 and protect the heat sink 3 at the same time;

[0026] The above structural design can prevent dust from falling on the heat sink 3, thereby reducing the heat dissipation efficiency of the heat sink 3.

[0027] Finally, a few points should be explained: First, in the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection; "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0028] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A solar photovoltaic circuit breaker contact system, comprising a base (1), characterized in that: The back of the base (1) is fixedly connected to a bottom plate (2) by bolts, a plurality of heat sinks (3) are installed inside the bottom plate (2), and the heat sink (3) passes through one end of the bottom plate (2) for heat dissipation, a notch channel and a mounting hole for a static contact assembly are installed inside the bottom plate (2), a fixing plate (5) is installed on one side of the base (1), and a screw rod (6) is connected to the inside of the fixing plate (5) by threads, and the screw rod (6) is used to fix the fixing plate (5) and the base (1) together, a dust screen (8) is inserted at the top of the fixing plate (5), and the dust screen (8) and the fixing plate (5) are connected by a fixing mechanism.

2. A solar photovoltaic circuit breaker contact system according to claim 1, characterized in that: The static contact assembly comprises a static contact block (4), a static contact point (41), and an arc-striking sheet (43); the static contact block (4) is mounted inside the base plate (2) by means of bolts, and the heat sink (3) is mounted on the surface of the static contact block (4); the static contact point (41) is mounted on the back of the static contact block (4); the bottom of the static contact point (41) is fixedly connected to an arc-isolating plate (42), and the top of the arc-isolating plate (42) is fixedly connected to an arc-striking sheet (43).

3. A solar photovoltaic circuit breaker contact system according to claim 2, characterized in that: A cushion block (411) is fixedly connected between the two static contacts (41).

4. A solar photovoltaic circuit breaker contact system according to claim 1, characterized in that: The fixing mechanism comprises a rotating knob (9) and a second screw rod (10); the dust screen (8) is fixedly mounted on the fixing plate (5) via the second screw rod (10); and the top of the second screw rod (10) is fixedly connected to the rotating knob (9).

5. A solar photovoltaic circuit breaker contact system according to claim 3, characterized in that: The top of the fixing plate (5) is provided with a fixing groove (7) whose size matches that of the dustproof net (8), and the top of the fixing plate (5) is provided with a screw groove whose size matches that of the second screw rod (10).

6. A solar photovoltaic circuit breaker contact system according to claim 2, characterized in that: A fixing hole is provided at the center of the surface of the stationary contact block (4), and the fixing hole is used to cooperate with the mounting hole in the base plate (2) to fix the stationary contact block (4) in the base plate (2).

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