Shunt release

Abstract

The shunt release comprises a shell, a coil framework is arranged in an inner cavity of the shell, a coil is wound on the coil framework, a cavity is formed in the coil framework, a movable iron core is connected in the cavity in a sliding mode in the axial direction of the cavity, the movable iron core comprises an adsorption part and a rod part, a static iron core is further arranged in the cavity, and a first through hole is formed in the static iron core. A reset spring is further arranged between the static iron core and the movable iron core. A PCB (Printed Circuit Board) is also arranged in the inner cavity of the shell; a rectifying circuit is arranged on the PCB; and the wire penetrates into the inner cavity of the shell from the outside of the shell and is sequentially connected with the PCB and the coil wound on the coil framework. According to the utility model, the rectification circuit is additionally arranged in the shunt release, so that the stability of the shunt release can be improved, electronic elements can be protected, ripples can be reduced, and the power supply quality can be improved. The advantages are beneficial to ensuring that the shunt release plays a reliable protection role in an electric power system and ensuring the safe operation of the electric power system.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical control, in particular to a shunt release. Background Art

[0002] A shunt release is essentially a tripping coil combined with a tripping device. Applying a specified voltage to the shunt release coil causes the circuit breaker to trip and open. Shunt releases are often used in remote control applications that require forced power disconnection, such as fire control systems that disconnect non-fire power supplies. Existing shunt releases are directly connected to an AC power source, which can be unstable. They typically require a stable power supply voltage to function properly. The voltage and frequency of the AC power source can fluctuate, which can cause unstable or malfunctioning of the shunt release, affecting proper circuit disconnection. AC power is also prone to electromagnetic interference, which can affect the electronic components and circuitry within the shunt release. The coil of the shunt release is a core component, and its performance directly affects its reliability and lifespan. Directly connected to an AC power source, the coil may be subjected to excessive current or voltage due to AC fluctuations and variations, leading to overheating or damage. Shunt releases provide protection and control functions in circuits, and their accuracy and reliability are crucial to their safe operation. If it is directly connected to the AC power supply, the fluctuation of the power supply voltage and electromagnetic interference may affect the accuracy and reliability of the shunt release, making it unable to accurately cut off the fault circuit or perform normal control operations. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the present invention aims to provide a shunt release.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a shunt release, comprising a shell, an inner cavity of the shell is provided with a coil skeleton, a coil is wound on the coil skeleton, the coil is arranged in the inner cavity of the shell, a cavity is provided in the coil skeleton, a moving iron core is connected to the cavity along its axial sliding, the moving iron core includes an adsorption portion and a rod portion, a static iron core is further provided in the cavity, the static iron core is provided with a first through hole for the rod portion of the moving iron core to pass through, and a reset is also provided between the static iron core and the moving iron core. A spring, the two axial ends of the return spring respectively abut against the static iron core and the moving iron core, and the return spring is sleeved on the rod of the moving iron core, one end of the shell is provided with an opening, a shell cover is provided at the opening, a second through hole is provided on the shell cover, and the rod of the moving iron core passes through the second through hole; a PCB board is also provided in the inner cavity of the shell, and a rectifier circuit is provided on the PCB board; and a wire is also included, the wire passes through the inner cavity of the shell from the outside of the shell and sequentially connects the PCB board and the coil wound on the coil frame.

[0005] Preferably, the static iron core is fixedly connected to the shell cover.

[0006] Preferably, the shell cover and the shell are fixedly connected by bolts.

[0007] Preferably, a protection box for accommodating the PCB board is further provided in the inner cavity of the shell, the protection box is arranged outside the PCB board, and a third through hole for the wire to pass through is provided on the protection box.

[0008] Preferably, the axis line of the static iron core and the axis line of the moving iron core are distributed along the same straight line direction.

[0009] Preferably, a groove extending in the axial direction is provided on the end of the static iron core opposite to the movable iron core, and one end of the return spring is axially embedded in the groove.

[0010] The beneficial effects of this utility model are as follows: By adding a rectifier circuit to the shunt release, the rectifier circuit can stabilize the AC power supply and convert it into DC power, thereby improving the performance and stability of the shunt release. This helps ensure that the shunt release can operate reliably in an emergency, disconnecting the faulty circuit and protecting the safe operation of the power system.

[0011] The rectifier circuit can reduce the maximum AC voltage faced by electronic components. When fluctuations occur in the AC power supply, the rectifier circuit can reduce the voltage to a tolerable level, thereby protecting the electronic components in the shunt release from overvoltage damage.

[0012] The rectifier circuit can stabilize the AC voltage and effectively reduce the ripple, which helps to reduce the electromagnetic interference and noise of the shunt release during operation and improve its operating accuracy and reliability.

[0013] Through the rectifier circuit, a more stable DC voltage can be obtained, providing high-quality power supply for the shunt release, thereby ensuring its normal operation and extending its service life.

[0014] In summary, by adding a rectifier circuit to the shunt release, this invention improves its stability, protects electronic components, reduces ripple, and improves power supply quality. These benefits help ensure that the shunt release plays a reliable protective role in the power system and guarantees safe operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is one of the structural exploded views of the present utility model;

[0017] Figure 3 This is the second exploded view of the structure of the present utility model;

[0018] Figure 4 It is a top view of the utility model;

[0019] Figure 5 For the Figure 4 Section view along line AA. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 5 As shown, a shunt release comprises a housing 1, the housing 1 being made of a yoke material, the inner cavity of the housing 1 being provided with a coil skeleton 2, the coil skeleton 2 being wound with a coil 3, the coil 3 being arranged in the inner cavity of the housing 1, the coil skeleton 2 being provided with a cavity 4, the cavity 4 being slidably connected to a moving iron core 5 along its axial direction, the moving iron core 5 comprising an adsorption portion 51 and a rod portion 52, a static iron core 6 being further provided in the cavity 4, the static iron core 6 being provided with a first through hole 7 for the rod portion 52 of the moving iron core 5 to pass through, a reset spring 8 being further provided between the static iron core 6 and the moving iron core 5, the reset spring The two axial ends of the spring 8 abut the stationary iron core 6 and the movable iron core 5, respectively. The return spring 8 is sleeved around the rod 52 of the movable iron core 5. One end of the housing 1 has an opening, secured with a housing cover 9. The housing cover 9 has a second through-hole 10 through which the rod 52 of the movable iron core 5 extends. The housing 1 also contains a PCB 11 within its interior, which houses a rectifier circuit. The housing also includes wires (not shown) that extend from the exterior of the housing 1 into its interior and sequentially connect the PCB 11 to the coil 3 wound on the bobbin 2. The stationary iron core 6 is fixedly connected to the housing cover 9. The housing cover 9 and the housing 1 are secured together by bolts 12. The housing 1 also contains a protective box 13 for accommodating the PCB 11. The protective box 13 is positioned outside the PCB 11 and has a third through-hole 14 through which the wires pass. The axis of the static iron core 6 and the axis of the movable iron core 5 are arranged along the same straight line. The end of the static iron core 6 opposite to the movable iron core 5 is provided with an axially extending groove, and one end of the return spring 8 is axially embedded in the groove, which is more convenient for installation.

[0021] When the present invention is powered, AC current flows through the wires into PCB 11, where it is rectified by the rectifier circuit and converted into DC current before entering coil 3. At this point, the movable core 5 overcomes the elastic force of the return spring 8 and slides axially relative to the stationary core 6. The distance that the rod 52 of the movable core 5 protrudes from the housing 9 increases. When coil 3 loses power, the movable core 5 returns to its original position under the elastic force of the return spring 8.

[0022] A rectifier circuit converts the AC voltage or current of an AC power source into a DC voltage or current. Installing a rectifier circuit before the shunt release primarily ensures a stable DC power supply. Since the shunt release's operating principle relies on the energization and de-energization of coil 3, and DC power is more stable than AC, the rectifier circuit provides the stable DC voltage or current required by the shunt release.

[0023] The utility model improves the performance and stability of the shunt release by adding a rectifier circuit to the shunt release. The rectifier circuit can stabilize the AC power supply and convert it into a DC power supply. This helps ensure that the shunt release can operate reliably in an emergency, cut off the faulty circuit, and protect the safe operation of the power system. The rectifier circuit can reduce the maximum AC voltage faced by electronic components. When fluctuations occur in the AC power supply, the rectifier circuit can reduce the voltage to a tolerable level, thereby protecting the electronic components in the shunt release from overvoltage damage. The rectifier circuit can stabilize the AC voltage and effectively reduce ripple, which helps reduce electromagnetic interference and noise during operation of the shunt release and improve its operating accuracy and reliability. Through the rectifier circuit, a more stable DC voltage can be obtained, providing a high-quality power supply for the shunt release, thereby ensuring its normal operation and extending its service life.

[0024] In summary, by adding a rectifier circuit to the shunt release, this invention improves its stability, protects electronic components, reduces ripple, and improves power supply quality. These benefits help ensure that the shunt release plays a reliable protective role in the power system and guarantees safe operation of the power system.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, simple modifications and substitutions by those skilled in the art are within the scope of protection of the present invention.

Claims

1. A shunt release, characterized in that: The cam is secured to a position adjacent to the cam frame and has a cam portion secured thereto, the cam portion being secured to a position adjacent to the cam frame and having a cam portion secured thereto.

2. A shunt release according to claim 1, characterized in that: The static iron core is fixedly connected to the shell cover.

3. A shunt release according to claim 2, characterized in that: The shell cover and the shell are fixedly connected by bolts.

4. The shunt release according to claim 1, characterized in that: A protection box for accommodating the PCB board is further provided in the inner cavity of the shell. The protection box is arranged outside the PCB board and has a third through hole for the wire to pass through.

5. The shunt release according to claim 1, characterized in that: The axis line of the static iron core and the axis line of the movable iron core are distributed along the same straight line direction.

6. The shunt release according to claim 1, characterized in that: An end portion of the static iron core opposite to the movable iron core is provided with an axially extending groove, and one end of the return spring is axially embedded in the groove.

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