An electric leakage-proof digital circuit breaker

Abstract

The utility model discloses a digital circuit breaker of anti -leakage, relate to electric power system technical field, including circuit breaker outer body, isolator and binding screw, the group wiring hole that the circuit breaker outer body upper wall seted up, its inner wall array fixedly connected with four groups of fixed seat, the outer wall of upper closed seat is connected with four groups of buckle, the lower end of upper closed seat is connected with lower closed cover, the inside of lower closed cover is passed and is seted up with the slot hole, and a group of connecting pipes are inserted in the slot hole, the utility model discloses, through dustproof and moistureproof structure at circuit breaker shell and wiring port place design, can effectively block the invasion of dust, humidity and corrosive gas and lead to the oxidation of wiring terminal, the poor contact, improve its adaptability under high dust, high humidity, corrosive environment through the optimization structure design and material selection, reduce the failure rate caused by environmental factors.

Description

Technical Field

[0001] This utility model relates to the field of power system technology, specifically a digital circuit breaker that prevents leakage current. Background Technology

[0002] With the continuous improvement of the intelligence and automation level of power systems, digital circuit breakers, as important protection devices in power systems, are widely used in industrial, commercial and residential power distribution systems. Traditional circuit breakers are mainly designed to protect circuits from overload and short circuits. They usually do not require frequent maintenance or upkeep after installation to ensure long-term stable operation. However, this "maintenance-free" design concept has also exposed some potential problems in practical applications.

[0003] During long-term operation, dust easily accumulates on the surface of the circuit breaker casing, especially in dusty or harsh environments such as factories, workshops, and warehouses. Simultaneously, the circuit breaker's terminals are typically exposed to the external environment, making them susceptible to dust, moisture, corrosive gases, and other external factors. These contaminants can penetrate to the terminals or internal contacts, leading to poor contact, increased resistance, and ultimately, open or short-circuit faults. In extreme cases, this poor contact can even cause localized overheating or leakage accidents, seriously threatening electrical safety. Furthermore, existing circuit breakers lack effective protection against dust and moisture in their structural design. Especially in humid or high-dust environments, their insulation performance may gradually decline, increasing the risk of leakage and electrical fires.

[0004] Therefore, there is an urgent need for a new type of digital circuit breaker with dustproof, moisture-proof, and leakage-proof functions to improve the safety, reliability, and service life of equipment and meet the needs of modern power systems for intelligence and high security. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a digital circuit breaker that prevents leakage current.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a leakage-proof digital circuit breaker, comprising a circuit breaker body, a disconnecting switch, and wiring screws. A set of disconnecting switches is installed at the front end of the circuit breaker body, and two sets of wiring screws are installed on the front wall of the circuit breaker body, with the two sets of wiring screws respectively installed on the upper half and lower half of the circuit breaker body.

[0007] The upper and lower walls of the circuit breaker body are respectively provided with a set of wiring holes. The inner wall of the wiring hole on the upper wall of the circuit breaker body is fixedly connected with four sets of fixing seats. An upper sealing seat is installed inside the wiring hole on the upper wall. The outer wall of the upper sealing seat is connected with four sets of buckles. The lower end of the upper sealing seat is connected to a lower sealing sleeve. A slot is opened through the lower sealing sleeve, and a set of connecting tubes is inserted into the slot. A set of small springs is sleeved inside the connecting tube. A set of sealing sleeves is sleeved outside the connecting tube. A movable tube is inserted inside the connecting tube. A connection port is reserved on the outer wall of the movable tube.

[0008] As mentioned above, an insulating sleeve is fixedly fitted on the right end of each of the two sets of wiring screws, and the insulating sleeves are made of silicone rubber.

[0009] As mentioned above, the upper walls of the four sets of fixed seats are respectively provided with slots, and the outer diameters of the four sets of buckles connected to the outer wall of the upper closed seat are adapted to the inner diameters of the slots. Magnets are installed in the slots, and the four sets of buckles are made of iron.

[0010] As mentioned above, the lower sealing sleeve is made of soft rubber, and the outer diameter of the lower sealing sleeve is larger than the inner diameter of the wiring hole.

[0011] As mentioned above, the outlet on the lower wall of the connecting pipe is smaller than the slot through which the connecting pipe passes through the upper wall.

[0012] As described above, the interior of the movable tube has a slot extending through the lower wall and connected to the connection port. A throttle is fixedly connected to the upper wall of the movable tube, and a set of limiting rods is fixedly connected to the outer wall of the movable tube. A limiting groove is formed on the outer wall of the connecting tube, and the limiting groove is L-shaped.

[0013] Compared with existing technologies, this leakage-proof digital circuit breaker has the following advantages:

[0014] I. This utility model, by designing a dustproof and moisture-proof structure at the circuit breaker housing and wiring terminals, can effectively prevent the intrusion of dust, moisture and corrosive gases, which can lead to oxidation of the wiring terminals, poor contact or deterioration of insulation performance, thereby significantly reducing the risk of open circuit, short circuit or even leakage caused by poor contact.

[0015] II. This utility model, the novel digital circuit breaker, improves its adaptability in high dust, high humidity and corrosive environments by optimizing structural design and material selection, and reduces the failure rate caused by environmental factors.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of this utility model;

[0020] Figure 4 This is a top view of the structure of this utility model;

[0021] Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A.

[0022] In the diagram: 1. Circuit breaker body; 101. Disconnecting switch; 102. Wiring screw; 2. Wiring hole; 201. Insulating sleeve; 202. Fixing base; 203. Upper sealing base; 204. Lower sealing sleeve; 205. Connecting pipe; 206. Small spring; 207. Movable tube; 208. Sealing sleeve; 209. Connection port; 210. Limiting groove; 211. Limiting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-5 As shown, this utility model provides a technical solution: a leakage-proof digital circuit breaker, including a circuit breaker body 1, a disconnecting switch 101 and wiring screws 102. A set of disconnecting switches 101 is installed at the front end of the circuit breaker body 1, and two sets of wiring screws 102 are installed on the front wall of the circuit breaker body 1. The two sets of wiring screws 102 are respectively installed on the upper half and the lower half of the circuit breaker body 1.

[0025] The upper and lower walls of the circuit breaker body 1 are respectively provided with a set of wiring holes 2. The wiring holes 2 on the upper wall of the circuit breaker body 1 are fixedly connected to four sets of fixing seats 202 in an array. A set of upper sealing seats 203 is installed inside the wiring holes 2 on the upper wall. Four sets of buckles are connected to the outer wall of the upper sealing seats 203. The lower end of the upper sealing seats 203 is connected to the lower sealing sleeve 204. The lower sealing sleeve 204 has a through slot, and a set of connecting pipes 205 is inserted into the slot. A set of small springs 206 is sleeved inside the connecting pipes 205. A set of sealing sleeves 208 is sleeved outside the connecting pipes 205. A movable pipe 207 is inserted inside the connecting pipes 205. A connection port 209 is reserved on the outer wall of the movable pipe 207.

[0026] Based on the overall structure of the device, by designing dustproof and moisture-proof structures at the circuit breaker housing and wiring terminals, the intrusion of dust, moisture and corrosive gases can be effectively prevented, which may lead to oxidation of the wiring terminals, poor contact or deterioration of insulation performance. This significantly reduces the risk of open circuit, short circuit or even leakage caused by poor contact. At the same time, by optimizing the structural design and material selection, its adaptability in high dust, high humidity and corrosive environments can be improved, reducing the failure rate caused by environmental factors.

[0027] like Figure 3 As shown, an insulating sleeve 201 is fixedly fitted on the right end of each of the two sets of wiring screws 102. The two sets of insulating sleeves 201 are made of silicone rubber.

[0028] By fitting an insulating sleeve 201 onto the right end of each of the two sets of wiring screws 102, and designing the material to be silicone rubber, not only can it achieve the effect of insulation, preventing leakage when the operator fixes the line, making it safer, but its material is also resistant to high temperature and aging, preventing short circuits or poor insulation due to long-term use.

[0029] like Figure 3 As shown, the upper walls of the four sets of fixing seats 202 are respectively provided with slots. The outer diameter of the four sets of buckles connected to the outer wall of the upper sealing seat 203 is adapted to the inner diameter of the slots. Magnets are installed in the slots, and the four sets of buckles are made of iron.

[0030] The upper sealing seat 203 is installed on the fixed seat 202 by using a snap fastener. When the snap fastener of the upper sealing seat 203 extends into the slot, it will attract the magnetic piece, which increases the stability during installation and facilitates the disassembly and maintenance of the device.

[0031] like Figure 3 As shown, the lower sealing sleeve 204 is made of soft rubber, and the outer diameter of the lower sealing sleeve 204 is larger than the inner diameter of the wiring hole 2.

[0032] By designing the lower sealing sleeve 204 to be made of soft rubber, the lower sealing sleeve 204 can be inserted into the circuit breaker body 1 from the wiring hole 2, while the rubber material's resilience is used to seal the lower port of the wiring hole 2.

[0033] like Figure 3 As shown, the outlet on the lower wall of the connecting pipe 205 is smaller than the slot through which the connecting pipe 205 passes through the upper wall.

[0034] By designing the lower wall outlet of the connecting tube 205 to be smaller than the slot that runs through the inside of the connecting tube 205, the small spring 206 will not fall off the lower wall outlet of the connecting tube 205 when it is inserted into the inside of the connecting tube 205.

[0035] like Figure 5 As shown, the interior of the movable tube 207 has a slot extending through the lower wall and is connected to the connection port 209. A throttle is fixedly connected to the upper wall of the movable tube 207. A set of limiting rods 211 is fixedly connected to the outer wall of the movable tube 207. A limiting groove 210 is opened on the outer wall of the connecting tube 205. The limiting groove 210 is L-shaped.

[0036] By using the movable tube 207 to compress the small spring 206, and using the limiting rod 211 and the limiting groove 210 to fix the movable tube 207 inside the connecting tube 205, when connecting the line, it can be inserted into the inside of the connecting tube 205 from the connection port 209, thereby entering the inside of the circuit breaker body 1.

[0037] Working Principle: In this invention, during wiring, the wire is first passed through a perforated rubber ring. Then, the upper sealing seat 203 and the fixed seat 202 are magnetically connected. During connection, the lower sealing sleeve 204 is flexible and can be squeezed into the wiring hole 2, then returned to its original position. After the fixed seat 202 and the upper sealing seat 203 are connected, the connecting tube 205, with a sealing sleeve 208 fitted on its outside, is inserted into the upper sealing seat 203 and connected to it. The slot on the inner wall of the upper sealing seat 203 has a threaded groove. The lower half of the connecting tube 205 is threaded. The connecting tube 205 is rotated to connect with the upper sealing seat 203. Next, the handle of the movable tube 207 is held, and the movable tube 207 is inserted from the connecting tube 202... Remove the wire from position 05, then insert it into the connection port 209 and out from the lower end of the movable tube 207, leaving sufficient length. Insert the wire from the lower end of the movable tube 207 into the slot of the connecting tube 205. Then, insert the limiting rod 211, which is fixedly connected to the outer wall of the movable tube 207, into the limiting slot 210 and rotate it to complete the limiting. Then, insert the wire into the inside of the circuit breaker body 1 from the inside of the upper sealing seat 203 and the lower sealing sleeve 204. Next, use the wiring screw 102 to press and fix the wire. Then, seal the connection port 209 with a perforated sealing rubber ring. At the same time, seal the outlet at the lower end of the circuit breaker body 1 with a sealing rubber ring. This way, the inside of the circuit breaker body 1 can be protected from dust, water vapor, moisture, and corrosive gases.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leakage-proof digital circuit breaker, comprising a circuit breaker body (1), a disconnecting switch (101) and wiring screws (102), wherein a set of disconnecting switches (101) is installed at the front end of the circuit breaker body (1), and two sets of wiring screws (102) are installed on the front wall of the circuit breaker body (1), the two sets of wiring screws (102) being installed on the upper half and lower half of the circuit breaker body (1) respectively; Its features are: The upper and lower walls of the circuit breaker body (1) are respectively provided with a set of wiring holes (2). The wiring holes (2) on the upper wall of the circuit breaker body (1) are fixedly connected to four sets of fixing seats (202) in an array. The wiring holes (2) on the upper wall are installed with a set of upper sealing seats (203). The outer wall of the upper sealing seats (203) is connected with four sets of buckles. The lower end of the upper sealing seats (203) is connected to a lower sealing sleeve (204). The lower sealing sleeve (204) has a through hole, and a set of connecting tubes (205) is inserted in the hole. A set of small springs (206) is sleeved inside the connecting tubes (205). A set of sealing sleeves (208) is sleeved outside the connecting tubes (205). A movable tube (207) is inserted inside the connecting tubes (205). A connection port (209) is reserved on the outer wall of the movable tubes (207).

2. The leakage-proof digital circuit breaker according to claim 1, characterized in that: An insulating sleeve (201) is fixedly fitted on the right end of each of the two sets of wiring screws (102), and the insulating sleeves (201) are made of silicone rubber.

3. The leakage-proof digital circuit breaker according to claim 1, characterized in that: The upper walls of the four sets of fixed seats (202) are respectively provided with slots. The outer diameter of the four sets of buckles connected to the outer wall of the upper closed seat (203) is adapted to the inner diameter of the slot. A magnetic piece is installed in the slot, and the four sets of buckles are made of iron.

4. A leakage-proof digital circuit breaker according to claim 1, characterized in that: The lower sealing sleeve (204) is made of soft rubber, and the outer diameter of the lower sealing sleeve (204) is larger than the inner diameter of the wiring hole (2).

5. A leakage-proof digital circuit breaker according to claim 1, characterized in that: The outlet on the lower wall of the connecting pipe (205) is smaller than the slot through which the connecting pipe (205) passes through the upper wall.

6. A leakage-proof digital circuit breaker according to claim 1, characterized in that: The interior of the movable tube (207) has a slot through the lower wall and is connected to the connection port (209). The upper wall of the movable tube (207) is fixedly connected to a throttle. The outer wall of the movable tube (207) is fixedly connected to a set of limiting rods (211). The outer wall of the connecting tube (205) has a limiting groove (210) with an L-shaped shape.

Images