Anti-creeping device for intelligent electronic molded case circuit breaker
By using tapered rubber sealing ring and extrusion ring structure in the wiring hole of the intelligent electronic plastic case circuit breaker, the leakage problem caused by insufficient sealing at the wiring in the prior art is solved, and higher sealing and safety are achieved .
Patent Information
- Application Number
- CN202420950025.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The existing intelligent electronic plastic case circuit breaker anti-leaking device ignores the seal at the wiring when sealing the shell, causing water vapor to enter the circuit breaker and cause leakage problems.
A kind of leakage-proof device for intelligent electronic plastic case circuit breaker is designed. By using a tapered rubber sealing ring in the wiring hole and using a combined structure of extrusion ring and a pressing spring, the sealing ring is extruded to improve sealing performance and avoid Water vapor enters.
It effectively improves the sealing at the circuit breaker wiring, prevents water vapor from entering, thereby avoiding leakage problems, and enhances the stability and safety of the power system.
Smart Images
Figure CN222483244U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of leakage prevention, in particular to a leakage prevention device for an intelligent electronic molded case circuit breaker. Background Art
[0002] The anti-leakage device for intelligent electronic molded case circuit breakers is a key safety device. It is mainly used to prevent leakage accidents and ensure the stable operation of the power system and the safety of personnel. The core of the device is that it can monitor the leakage in the circuit in real time. Once leakage is detected, it can quickly cut off the power supply to avoid possible safety accidents.
[0003] The current intelligent electronic molded case circuit breaker leakage protection device is usually implemented through intelligent monitoring and the sealing of the shell. The sealing of the shell is usually implemented to prevent water or water vapor from entering the inside of the circuit breaker through the sealing effect, thereby achieving the leakage protection function. However, the current sealing of the circuit breaker shell ignores the sealing of the wiring, resulting in water vapor entering the inside of the circuit breaker and causing leakage problems. Therefore, those skilled in the art provide an intelligent electronic molded case circuit breaker leakage protection device to solve the problems raised in the above background technology. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides an anti-leakage device for an intelligent electronic molded case circuit breaker to solve the problem that the sealing of the connection point is currently ignored when sealing the circuit breaker housing, resulting in water vapor entering the interior of the circuit breaker and causing leakage.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-leakage device for an intelligent electronic molded case circuit breaker, comprising a circuit breaker housing, wherein wiring holes are provided on the upper and lower sides of the circuit breaker housing, a cable is connected in the wiring hole, a threaded groove is provided on one side of the wiring hole, a screw is connected in the threaded groove, a connecting rod is connected to the upper end of the screw, a pressing ring is installed at one end of the connecting rod, a pressing spring is installed at the bottom side of the pressing ring, an extrusion ring is installed at the bottom end of the pressing spring, and a conical rubber sealing ring is sleeved on one end of the cable adjacent to the wiring hole.
[0008] Preferably, the conical rubber sealing ring is conical, and the extrusion ring is extruded and clamped with the upper end of the conical rubber sealing ring.
[0009] Preferably, the bottom of the conical rubber sealing ring is in compression contact with the opening of the wiring hole, and the conical rubber sealing ring is squeezed through the extrusion ring under the limiting pressure of the pressure ring by the pressure spring, thereby improving the sealing performance between the conical rubber sealing ring and the wiring hole, and preventing water vapor from entering the interior of the circuit breaker housing to cause leakage problems.
[0010] Preferably, the bottom end of the screw is threadedly connected to the thread groove, and the upper end of the screw is rotatably engaged with the connecting rod.
[0011] Preferably, a conical pressure plate is installed on the upper side of the pressure ring, and a nut is threadedly sleeved on the outer side of the conical pressure plate. After the conical rubber sealing ring is squeezed, the nut is rotated to shrink and squeeze the conical pressure plate, thereby squeezing and clamping the cable passing through the pressure ring to prevent the cable from being loosened due to pulling, resulting in gaps in the conical rubber sealing ring.
[0012] (III) Beneficial effects
[0013] Compared with the prior art, the utility model provides an intelligent electronic molded case circuit breaker anti-leakage device, which has the following beneficial effects:
[0014] Through the design, before inserting the cable into the wiring hole, the cable can be passed through the pressure ring and then fitted with the conical rubber sealing ring, and then docked with the wiring hole. After docking, the conical rubber sealing ring is moved until it contacts the wiring hole, and then the screw is connected to the corresponding threaded groove. At this time, the pressure spring is sleeved on the side of the cable, and the pressure spring squeezes the conical rubber sealing ring through the extrusion ring under the limiting pressure of the pressure ring, thereby improving the sealing between the conical rubber sealing ring and the wiring hole, and avoiding water vapor from entering the interior of the circuit breaker to cause leakage problems. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of an anti-leakage device for an intelligent electronic molded case circuit breaker provided in an embodiment of the present application.
[0016] Figure 2 It is a structural schematic diagram of a thread groove in an anti-leakage device for an intelligent electronic molded case circuit breaker provided in an embodiment of the present application.
[0017] Figure 3 It is a structural schematic diagram of an extrusion ring in an anti-leakage device for an intelligent electronic molded case circuit breaker provided in an embodiment of the present application.
[0018] In the figure: 1. circuit breaker housing; 2. wiring hole; 3. cable; 4. threaded groove; 5. screw; 6. connecting rod; 7. pressure ring; 8. conical pressure plate; 9. nut; 10. pressure spring; 11. extrusion ring; 12. conical rubber sealing ring. DETAILED DESCRIPTION
[0019] 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.
[0020] The utility model provides a technical solution, an anti-leakage device for an intelligent electronic molded case circuit breaker, please refer to Figure 1 , Figure 2 , comprising a circuit breaker housing 1, wherein wiring holes 2 are provided on the upper and lower sides of the circuit breaker housing 1, a cable 3 is connected in the wiring hole 2, a threaded groove 4 is provided on one side of the wiring hole 2, a screw 5 is connected in the threaded groove 4, a connecting rod 6 is connected to the upper end of the screw 5, the bottom end of the screw 5 is threadedly connected to the threaded groove 4, the upper end of the screw 5 is rotatably connected to the connecting rod 6, a pressing ring 7 is installed at one end of the connecting rod 6, a pressing spring 10 is installed at the bottom side of the pressing ring 7, and an extrusion ring 11 is installed at the bottom end of the pressing spring 10, please refer to Figure 2 , Figure 3 A conical rubber sealing ring 12 is sleeved on one end of the cable 3 adjacent to the wiring hole 2. The conical rubber sealing ring 12 is conical in shape. The extrusion ring 11 is extruded and clamped with the upper end of the conical rubber sealing ring 12. The bottom of the conical rubber sealing ring 12 is extruded and contacted with the opening of the wiring hole 2. When the pressing spring 10 is pressed by the pressing ring 7, the conical rubber sealing ring 12 is squeezed through the extrusion ring 11, thereby improving the sealing performance between the conical rubber sealing ring 12 and the wiring hole 2, and preventing water vapor from entering the inside of the circuit breaker housing 1 to cause leakage problems.
[0021] See also Figure 2 , Figure 3 A conical pressing plate 8 is installed on the upper side of the pressing ring 7, and a nut 9 is threadedly sleeved on the outer side of the conical pressing plate 8. After the conical rubber sealing ring 12 is squeezed, the nut 9 is rotated to shrink and squeeze the conical pressing plate 8, thereby squeezing and clamping the cable 3 passing through the pressing ring 7 to prevent the cable 3 from being pulled loose and causing a gap in the conical rubber sealing ring 12.
[0022] The circuit breaker housing 1 in the present invention is provided with wiring holes 2 on both the upper and lower sides, and a threaded groove 4 is provided on one side of the wiring hole 2, and a screw 5 is threadedly connected in the threaded groove 4, and a connecting rod 6 is rotatably clamped at the end of the screw 5, and a pressing ring 7 is installed at the other end of the connecting rod 6, and a pressing spring 10 is installed on the side of the pressing ring 7 adjacent to the wiring hole 2, and an extrusion ring 11 is installed at the other end of the pressing spring 10;
[0023] Before inserting the cable 3 into the wiring hole 2, the cable 3 can be passed through the pressing ring 7 and then sleeved with the conical rubber sealing ring 12. The conical rubber sealing ring 12 can be adjusted and replaced according to the diameter specification of the cable 3 to ensure the tightness of the conical rubber sealing ring 12 and the cable 3, and then docked with the wiring hole 2. After the cable 3 is docked with the wiring hole 2, the conical rubber sealing ring 12 is moved to contact with the wiring hole 2, and then the screw 5 is connected with the corresponding thread groove 4. At this time, the pressing spring 10 is sleeved on the side of the cable 3, and the pressing spring 10 squeezes the conical rubber sealing ring 12 through the extrusion ring 11 under the limiting pressure of the pressing ring 7, thereby improving the sealing between the conical rubber sealing ring 12 and the wiring hole 2, and avoiding the water vapor from entering the inside of the circuit breaker housing 1 to cause leakage problems;
[0024] Subsequently, after the conical rubber sealing ring 12 is squeezed, the nut 9 is rotated to shrink and squeeze the conical pressure plate 8, thereby squeezing and clamping the cable 3 passing through the pressure ring 7 to prevent the cable 3 from being pulled loose and causing gaps in the conical rubber sealing ring 12, thereby further improving the sealing of the wiring connection.
[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0026] In this document, unless otherwise clearly stipulated and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to the specific circumstances.
[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An anti-leakage device for an intelligent electronic molded case circuit breaker, comprising a circuit breaker housing (1), characterized in that: The circuit breaker housing (1) is provided with wiring holes (2) on both upper and lower sides, a cable (3) is connected in the wiring hole (2), a threaded groove (4) is provided on one side of the wiring hole (2), a screw rod (5) is connected in the threaded groove (4), a connecting rod (6) is connected to the upper end of the screw rod (5), a pressing ring (7) is installed at one end of the connecting rod (6), a pressing spring (10) is installed at the bottom side of the pressing ring (7), an extrusion ring (11) is installed at the bottom end of the pressing spring (10), and a conical rubber sealing ring (12) is sleeved on one end of the cable (3) adjacent to the wiring hole (2).
2. The anti-leakage device for an intelligent electronic molded case circuit breaker according to claim 1 is characterized in that: The conical rubber sealing ring (12) is conical, and the extrusion ring (11) is extruded and clamped with the upper end of the conical rubber sealing ring (12).
3. The anti-leakage device for an intelligent electronic molded case circuit breaker according to claim 1 is characterized in that: The bottom of the conical rubber sealing ring (12) is in extrusion contact with the opening of the wiring hole (2).
4. The anti-leakage device for an intelligent electronic molded case circuit breaker according to claim 1, characterized in that: The bottom end of the screw rod (5) is threadedly connected to the thread groove (4), and the upper end of the screw rod (5) is rotatably connected to the connecting rod (6).
5. The anti-leakage device for an intelligent electronic molded case circuit breaker according to claim 1, characterized in that: A conical pressing plate (8) is installed on the upper side of the pressing ring (7), and a nut (9) is threadedly sleeved on the outer side of the conical pressing plate (8).