Combined circuit breaker

Abstract

The utility model relates to the field of combined circuit breakers, and discloses a combined circuit breaker which comprises a box body, a vacuum circuit breaker, an overvoltage protector and a support, the support comprises a supporting plate and two stand columns, a groove is formed in the side face of the supporting plate in a penetrating mode, and a sliding groove is formed in the upper end face of the supporting plate. Two sliding blocks are arranged at the two ends of the sliding groove in a sliding mode, two telescopic rods are arranged on the two sides of the two sliding blocks in a sliding mode respectively, a spring is fixedly arranged between the two opposite sides of the two sliding blocks, and two sliding rods are fixedly arranged on the two sides, close to the supporting plate, of the two stand columns. According to the utility model, during installation, the two stand columns are pulled out, the two opposite sides of the stand columns are attached to the lower portions of the two sides of the vacuum circuit breaker and are fixed through the two magnets inside the stand columns, the overvoltage protector is arranged above the sliding grooves of the support, the two telescopic rods are pressed to enable the springs to rebound, and the two sliding blocks are driven to be attached to the two ends of the overvoltage protector.

Description

Technical Field

[0001] The utility model relates to the field of combined circuit breakers, in particular to a combined circuit breaker. Background Art

[0002] Environmental gas cabinets are professional equipment that reduces environmental load and improves gas utilization efficiency. Their core function is the safe storage and efficient use of environmental gas. Their far-reaching significance lies in their positive contribution to environmental protection and human health. With the increasing global environmental awareness, many companies and institutions have turned to the use of environmental gas, and environmental gas cabinets have played a vital role in this transformation process, ensuring the safe storage and rational use of environmental gas. The equipment has a built-in combined circuit breaker, which can quickly and automatically cut off the power supply when encountering a system failure, effectively preventing the situation from further deteriorating. Its excellent performance lies in the ability to operate frequently. Even in the face of rated short-circuit breaking current, it can continuously perform dozens or even hundreds of breaking tasks, demonstrating extremely high reliability and durability.

[0003] In the process of implementing this application, the inventors found that the prior art has the following problems: the existing combined circuit breakers usually adopt the installation of overvoltage protection devices to prevent the generation of overvoltage or reduce the amplitude of overvoltage, but most overvoltage protection devices are connected by screws, which are cumbersome to disassemble and install, and are prone to rust and corrosion when exposed to the outside.

[0004] Therefore, those skilled in the art provide a combined circuit breaker to solve the problems raised in the above background technology. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a combined circuit breaker, which uses a bracket to fix the overvoltage protector and the vacuum circuit breaker together, and the outer box can protect the connection of the wires to avoid rust and extend the service life.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A combined circuit breaker comprises a box, a vacuum circuit breaker, an overvoltage protector and a bracket, wherein a handle is fixedly arranged at the center of the top of the box, three connecting wires are fixedly arranged at the top of the overvoltage protector, six buckles are fixedly arranged on one side below the overvoltage protector, and three binding belts are fixedly arranged on opposite sides of the six buckles;

[0008] Through the above technical solution, the handle arranged on the top of the box body can facilitate the movement and installation of the combined circuit breaker, and the binding belt arranged on one side of the overvoltage protector can facilitate the bundling of excessively long connecting wires to avoid tangling.

[0009] The bracket includes a support plate and two columns, the side surface of the support plate is penetrated by a groove, the upper end surface of the support plate is provided with a slide groove, two sliders are slidably arranged at both ends of the slide groove, two telescopic rods are slidably arranged on both sides of the two sliders, a spring is fixedly arranged between the two opposite sides of the two sliders, two magnets are fixedly arranged on both sides of the two columns near the two sliders, two slide rods are fixedly arranged on both sides of the two columns near the support plate, and two limit blocks are fixedly arranged in the vertical direction of the two slide rods;

[0010] Through the above technical solution, the slide groove opened on the upper end surface of the support plate is used for the horizontal movement of the two sliders. The springs between the sliders can control the two sliders at a certain distance, which is convenient for fixing the overvoltage protector. The telescopic rods running through both sides of the support plate can fix the sliders at both ends of the slide groove, making the disassembly and installation of the overvoltage protector easier without the need to use screws for fixing. The magnets arranged inside the column can fix the bracket on both sides of the vacuum circuit breaker. The limit blocks on the slide rod can fix its position after the column is rotated, so that it can adapt to placement in different directions.

[0011] Furthermore, the slide groove inside the support plate is opened above the groove;

[0012] Through the above technical solution, the slide groove is arranged above the groove, so that the movement of the two sliding blocks and the two sliding rods does not affect each other.

[0013] Furthermore, the two sliding rods are both slidably arranged on the inner wall of the groove;

[0014] Through the above technical solution, the sliding rod slides on the inner wall of the groove, which can be used to adjust the length of the bracket to adapt to vacuum circuit breakers of different widths or lengths.

[0015] Furthermore, the vacuum circuit breaker is fixedly arranged on the lower end surface of the inner wall of the box body;

[0016] Through the above technical solution, a box is arranged outside the vacuum circuit breaker, which can facilitate the transportation of the vacuum circuit breaker.

[0017] Furthermore, the two columns are arranged below the two sides of the vacuum circuit breaker, and the overvoltage protector is movably arranged between the two sides of the two sliders away from the columns;

[0018] Through the above technical solution, a magnet is arranged inside the column, which can be well fixed on the outside of the vacuum circuit breaker to prevent it from falling during movement. It is arranged at the bottom of both sides and does not hinder the use of the vacuum circuit breaker. The overvoltage protector is movably arranged between the sliders and can be quickly replaced when a fault occurs.

[0019] Furthermore, the inner wall of the box is made of polyethylene foam plastic;

[0020] Through the above technical solution, the polyethylene foam plastic is a good buffer material, which can protect the vacuum circuit breaker from being damaged when it is hit or impacted from the outside.

[0021] Furthermore, the two telescopic rods are arranged through both sides of the front end of the support plate;

[0022] Through the above technical solution, the two sliders can be released by pressing the telescopic rod, and the spring between the sliders will rebound quickly to fix the placed overvoltage protector.

[0023] The utility model has the following beneficial effects:

[0024] 1. The utility model proposes a combined circuit breaker. During the use of the combined circuit breaker, when the overvoltage generated by the vacuum circuit breaker exceeds the tolerance range of the overvoltage protector, the connection of the connecting wire can be removed, and the overvoltage protector can be directly removed and replaced with a new overvoltage protector by sliding the sliders on both sides to the far side to fix them at both ends of the slide groove without using screws.

[0025] 2. The utility model proposes a combined circuit breaker, the handle on the top of the combined circuit breaker box is convenient for moving and installing the circuit breaker, the buffer material inside the box can effectively provide a buffer when it is bumped or hit, will not cause damage to the internal devices, and can protect the connection of the connecting wire to avoid rust, corrosion and the like, thereby extending the service life. The binding belt arranged on one side of the overvoltage protector can gather the excessively long connecting wire to prevent tangling during installation and disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an internal front view of the utility model;

[0027] Figure 2 This is an axial schematic diagram of the vacuum circuit breaker of the utility model;

[0028] Figure 3 This is a schematic diagram of the connection between the bracket and the overvoltage protector of the utility model;

[0029] Figure 4 This is an axial schematic diagram of the support plate of the utility model;

[0030] Figure 5 It is a front cross-sectional schematic diagram of the support plate of the utility model.

[0031] Legend:

[0032] 1. Handle; 2. Box; 3. Vacuum circuit breaker; 4. Overvoltage protector; 5. Bracket; 6. Slider; 7. Magnet; 8. Slide bar; 9. Slide groove; 10. Telescopic rod; 11. Column; 12. Spring; 13. Limit block; 14. Support plate; 15. Groove; 16. Buckle; 17. Restraint belt; 18. Connecting wire. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1-5 The utility model provides a combined circuit breaker, comprising a box 2, a vacuum circuit breaker 3, an overvoltage protector 4 and a bracket 5. A handle 1 is fixedly provided at the top center of the box 2, three connecting wires 18 are fixedly provided at the top of the overvoltage protector 4, six buckles 16 are fixedly provided on one side below the overvoltage protector 4, and three binding belts 17 are fixedly provided on the opposite side between the six buckles 16;

[0035] When the box 2 needs to be moved or installed, it can be moved directly through the handle 1 on the top. When the three connecting wires 18 provided on the overvoltage protector 4 are not in use or the wires are too long after connection, they can be fixed to one side of the overvoltage protector 4 by three binding straps 17 to prevent knotting.

[0036] The bracket 5 includes a support plate 14 and two columns 11. A groove 15 is formed through the side of the support plate 14. A slide groove 9 is formed on the upper end surface of the support plate 14. Two sliders 6 are slidably provided at both ends of the slide groove 9. Two telescopic rods 10 are slidably provided on both sides of the two sliders 6. A spring 12 is fixedly provided between the two opposite sides of the two sliders 6. Two magnets 7 are fixedly provided on both sides of the two columns 11 near the two sliders 6. Two slide rods 8 are fixedly provided on both sides of the two columns 11 near the support plate 14. Two limit blocks 13 are fixedly provided on the two slide rods 8 in the vertical direction.

[0037] When placing the overvoltage protector 4, place it above the slide groove 9, press the telescopic rods 10 on both sides of the two sliders 6, ensure that the two sides of the two telescopic rods 10 are on the same plane as the inner wall of the slide groove 9, and the spring 12 will rebound quickly, drag the two sliders 6 at both ends to slide to the two ends of the overvoltage protector 4 to fix it. If the bracket 5 is placed at the front end of the vacuum circuit breaker 3, the column 11 can be pulled out to both sides through the slide rod 8 to ensure that the four limit blocks 13 leave the groove 15, rotate the column 11 to the horizontal direction, and then push the column 11 back and fix it with the four limit blocks 13.

[0038] The slide groove 9 inside the support plate 14 is opened above the groove 15, and the two slide bars 8 are slidably arranged on the inner wall of the groove 15;

[0039] Specifically, by providing the slide slot 9 above the groove 15 , the slide bar 8 does not interfere with the slide block 6 when sliding in the horizontal direction, and the operation is not affected.

[0040] The vacuum circuit breaker 3 is fixedly arranged on the lower end surface of the inner wall of the box body 2, and two columns 11 are arranged below the two sides of the vacuum circuit breaker 3;

[0041] The inner wall of the box body 2 is a buffer material, which can ensure that the vacuum circuit breaker 3 will not be damaged when it is hit. The columns 11 are arranged on both sides below the vacuum circuit breaker 3 and will not affect the use of the vacuum circuit breaker 3.

[0042] The overvoltage protector 4 is movably arranged between the two sides of the two sliders 6 away from the pillar 11, and the three connecting wires 18 are movably placed on the sides of the three binding belts 17 close to the overvoltage protector 4;

[0043] Specifically, the overvoltage protector 4 can be fixed only by two sliders 6 without screws, and the three binding belts 17 can respectively bind the three connecting wires 18 to avoid entanglement.

[0044] Two telescopic rods 10 are arranged through both sides of the front end of the support plate 14;

[0045] Specifically, the two slide blocks 6 can be fixed at the two ends of the slide slot 9 by two telescopic rods 10, ensuring that there is enough space in the middle when the overvoltage protector 4 is placed.

[0046] Working principle: During installation, the two columns 11 on both sides of the bracket 5 are pulled out to ensure that the length of the bracket 5 is adapted to the vacuum circuit breaker 3, and then the two columns 11 are rotated so that the opposite sides thereof are fitted to the lower sides of the vacuum circuit breaker 3, and then the two magnets 7 inside the two columns 11 are used to fix the overvoltage protector 4. The overvoltage protector 4 is placed above the slide groove 9 in the bracket 5, and the two telescopic rods 10 are pressed to allow the spring 12 to rebound, driving the two sliders 6 to fit the two ends of the overvoltage protector 4, and the connecting wire 18 is grounded and connected. The excessively long part can be tightened with the binding belt 17. When the combined circuit breaker automatically cuts off the power supply of the environmental protection gas cabinet, it will generate an overvoltage. When the overvoltage is too large, the internal overvoltage protector 4 is damaged. When it needs to be replaced, the two sliders 6 are slid to the two ends of the slide groove 9 so that the telescopic rod 10 can penetrate the front ends of the support plate 14, fix the two sliders 6, disconnect the connecting wire 18, remove the damaged overvoltage protector 4 and replace it with a new one.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A combined circuit breaker, comprising a housing (2), a vacuum circuit breaker (3), an overvoltage protector (4) and a bracket (5), characterized in that: A handle (1) is fixedly provided at the center of the top of the box body (2), three connecting wires (18) are fixedly provided at the top of the overvoltage protector (4), six buckles (16) are fixedly provided on one side below the overvoltage protector (4), and three binding belts (17) are fixedly provided on opposite sides of the six buckles (16); The bracket (5) comprises a support plate (14) and two columns (11), a groove (15) is provided through the side of the support plate (14), a slide groove (9) is provided on the upper end surface of the support plate (14), two sliders (6) are slidably provided at both ends of the slide groove (9), two telescopic rods (10) are slidably provided on both sides of the two sliders (6), a spring (12) is fixedly provided between the two opposite sides of the two sliders (6), two magnets (7) are fixedly provided on both sides of the two columns (11) near the two sliders (6), two slide rods (8) are fixedly provided on both sides of the two columns (11) near the support plate (14), and two limit blocks (13) are fixedly provided on the two slide rods (8) in the vertical direction.

2. A combined circuit breaker according to claim 1, characterized in that: The slide groove (9) inside the support plate (14) is opened above the groove (15).

3. A combined circuit breaker according to claim 1, characterized in that: The two sliding rods (8) are both slidably arranged on the inner wall of the groove (15).

4. A combined circuit breaker according to claim 1, characterized in that: The vacuum circuit breaker (3) is fixedly arranged on the lower end surface of the inner wall of the box body (2).

5. A combined circuit breaker according to claim 1, characterized in that: The two upright columns (11) are arranged below both sides of the vacuum circuit breaker (3).

6. A combined circuit breaker according to claim 1, characterized in that: The overvoltage protector (4) is movably arranged between two sides of the two sliders (6) away from the pillar (11).

7. A combined circuit breaker according to claim 1, characterized in that: The inner wall of the box body (2) is made of polyethylene foam plastic.

8. A combined circuit breaker according to claim 1, characterized in that: The three connecting wires (18) are movably placed on one side of the three restraining belts (17) close to the overvoltage protector (4).

9. A combined circuit breaker according to claim 1, characterized in that: The two telescopic rods (10) are arranged through both sides of the front end of the support plate (14).

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