Arc extinguishing control circuit device

Abstract

The invention discloses an arc extinguishing control circuit device, which comprises a first shell, a second shell, a first arc extinguishing mechanism, a second arc extinguishing mechanism, a first binding post and a second binding post, and the multi-stage arc extinguishing mechanism of the device can effectively improve the reliability and efficiency of arc extinguishing. A coil, a spring and an iron block in the first arc extinguishing mechanism form an electromagnetic system, and a magnetic field generated by the coil can quickly act on the iron block, so that a contact plate is driven to act through a connecting rod, the current is quickly cut off, and the arc forming time can be effectively shortened. A first guide piece and a second guide piece in the second arc extinguishing mechanism guide the arc to an arc extinguishing strip, the arc extinguishing strip can segment the arc in a physical mode, arc energy is reduced, and arc extinguishing is further accelerated. The design of the air holes in the side face of the second shell facilitates heat dissipation in the device, equipment damage caused by high temperature is prevented, and the whole device is designed in a modular mode, so that the device is compact in structure and convenient to install and maintain.

Description

Technical Field

[0001] The present invention relates to the technical field of arc extinguishing equipment, and in particular to an arc extinguishing control circuit device. Background Art

[0002] The arc extinguishing control circuit device is an important device used to control and suppress the generation of arcs and their hazards. It is mainly used in power systems, electrical equipment and various types of switchgear. In a high-voltage or high-current electrical system, when the switch disconnects the circuit, a strong arc will be generated at the break due to the sudden interruption of the current path. This arc not only has extremely high temperature and energy, which can damage the switchgear, but may also cause serious accidents such as fire and explosion, and even endanger the safety of operators. Therefore, the arc extinguishing control circuit effectively suppresses the generation and expansion of arcs through specific circuit design and control strategies, ensuring that the switchgear can quickly and safely extinguish the arc when disconnecting the circuit, improving the reliability and service life of electrical equipment, and also providing higher safety protection for operators.

[0003] Some existing arc extinguishing devices only use a single arc extinguishing mechanism, such as relying only on arc extinguishing grids or arc extinguishing hoods. This single mechanism is often difficult to effectively suppress the expansion and damage of arcs when facing complex or high-energy arcs, resulting in low arc extinguishing efficiency and poor reliability. In the existing arc extinguishing control circuit, the current cut-off mechanism has a slow reaction speed and cannot respond to abnormal current changes in the circuit (such as short circuit or overload) in time, which will cause the arc to form for a long time, increasing the risk of equipment damage and safety accidents. The existing arc extinguishing device guidance and arc extinguishing structure are imperfect: In the prior art, the arc guiding structure is not optimized enough, resulting in the arc spreading inside the arc extinguishing device and being unable to be effectively concentrated on special arc extinguishing components such as arc extinguishing bars; at the same time, the design of the arc extinguishing bar may not be scientific enough, the arc path is short, and it is not easy to cool, which affects the arc extinguishing effect. The arc extinguishing device in the prior art is not reasonably designed for heat dissipation, such as the lack of air vents or effective heat dissipation paths, which causes the device to be damaged by high temperature. This problem is more prominent in the case of long-term high-load operation, which will affect the stability and service life of the device. The arc extinguishing device in the prior art is difficult to install and maintain due to its complex structural design, which is not conducive to rapid deployment and long-term maintenance in practical applications and may also increase the cost of use. Summary of the invention

[0004] The object of the present invention is to provide an arc extinguishing control circuit device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an arc extinguishing control circuit device, comprising a first shell, a second shell is fixedly installed on the top ends of both sides of the first shell, a first arc extinguishing mechanism is installed in the first shell, a second arc extinguishing mechanism is installed in the second shell, a pair of through holes are opened at the top of the first shell and a first terminal is fixedly installed, and through holes are opened at the bottom ends of both sides of the first shell and a second terminal is fixedly installed.

[0006] Furthermore, the first arc extinguishing mechanism includes a coil fixedly mounted on the bottom of the first shell, a pair of the second terminals penetrate into the first shell to connect the coil, a first spring is fixedly mounted at the bottom center of the first shell, the first spring is located in the middle of the coil and its top is fixedly connected to an iron block.

[0007] Furthermore, a connecting rod is fixedly installed on the top of the iron block, a partition is fixedly installed in the middle of the first shell, and the top of the connecting rod passes through the partition and is fixedly installed in the middle of the contact plate.

[0008] Furthermore, a second spring is fixedly installed between the contact plate and the partition and wraps the connecting rod. A contact head is fixedly installed at the bottom of the first terminal and inside the first shell. The contact head is electrically connected to both ends of the contact plate respectively, and contact grooves are provided at both ends of the contact plate.

[0009] Furthermore, the second arc extinguishing mechanism includes a first guide piece fixedly connected to the side of the contact head, contact columns are fixedly installed on both sides of the partition, second guide pieces are fixedly installed on the side of the contact column, and the contact groove is sleeved with the contact column to achieve electrical connection.

[0010] Furthermore, the first guide piece and the second guide piece both extend into the interior of the second shell, a support piece is fixedly installed in the middle of the side surfaces of the first guide piece and the second guide piece, a plurality of groups of arc extinguishing strips are fixedly installed on the support piece at equal intervals, and an air vent is opened through the middle of the side surface of the second shell.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) Multi-stage arc extinguishing mechanism: This device is designed with a first arc extinguishing mechanism and a second arc extinguishing mechanism. The multi-stage arc extinguishing mechanism can effectively improve the reliability and efficiency of arc extinguishing. When the switch is disconnected, the first arc extinguishing mechanism quickly cuts off the current through the cooperation of the coil, spring and iron block. The subsequent second arc extinguishing mechanism further suppresses the expansion of the arc through the guide plate and arc extinguishing bar, ensuring that the arc can be extinguished quickly.

[0012] (2) Efficient current cutting mechanism: The coil, spring and iron block in the first arc extinguishing mechanism form an electromagnetic system. When an abnormal current appears in the circuit, the magnetic field generated by the coil will quickly act on the iron block, and then drive the contact plate to move through the connecting rod to achieve rapid current cutting. This electromagnetic mechanism reacts quickly and can effectively reduce the arc formation time.

[0013] (3) Optimized guiding and arc extinguishing structure: The first and second guiding plates in the second arc extinguishing mechanism guide the arc to the arc extinguishing bar. The design of the arc extinguishing bar can physically divide the arc, reduce the arc energy, and further accelerate the extinguishing of the arc. The combined design of the supporting plate and the arc extinguishing bar increases the path length of the arc and improves the arc extinguishing efficiency.

[0014] (4) Good heat dissipation performance: The air vent design on the side of the second shell helps to dissipate the heat inside the device, prevent equipment damage caused by high temperature, and improve the stability and life of the device. The air vent design can also accelerate the cooling of the arc through air flow, further improving the arc extinguishing effect.

[0015] (5) Compact structure and easy installation: The entire device adopts a modular design. The combined structure of the first shell and the second shell makes the device compact and easy to install and maintain. The design of the terminal simplifies the connection with the external circuit and improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 is a schematic diagram of the overall structure of an arc extinguishing control circuit device according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of an internal cross section of an arc extinguishing control circuit device according to an embodiment of the present invention; Figure 3 is a structural schematic diagram of a first arc extinguishing mechanism of an arc extinguishing control circuit device according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a second arc extinguishing mechanism of an arc extinguishing control circuit device according to an embodiment of the present invention.

[0018] Reference numerals: 1. First shell; 2. Second shell; 3. First arc extinguishing mechanism; 4. Second arc extinguishing mechanism; 5. First terminal; 6. Second terminal; 7. Coil; 8. First spring; 9. Iron block; 10. Connecting rod; 11. Partition; 12. Contact plate; 13. Second spring; 14. Contact head; 15. Contact groove; 16. First guide piece; 17. Contact post; 18. Second guide piece; 19. Support piece; 20. Arc extinguishing strip; 21. Air vent. DETAILED DESCRIPTION

[0019] The present invention is further described below with reference to the accompanying drawings and specific embodiments: See also Figure 1-4 According to an embodiment of the present invention, an arc extinguishing control circuit device includes a first shell 1, a second shell 2 is fixedly installed on the top ends of both sides of the first shell 1, a first arc extinguishing mechanism 3 is installed in the first shell 1, and a second arc extinguishing mechanism 4 is installed in the second shell 2, a pair of through holes are opened on the top of the first shell 1 and a first terminal 5 is fixedly installed, and through holes are opened on the bottom ends of both sides of the first shell 1 and a second terminal 6 is fixedly installed.

[0020] Among them, the first shell 1 serves as the main body of the overall device, providing installation space and external protection for the internal structure, ensuring the sealing and mechanical strength of the device. The second shell 2 is fixedly installed at the top ends of both sides of the first shell 1, and is used to install the second arc extinguishing mechanism 4, providing additional arc extinguishing protection and heat dissipation space. The first arc extinguishing mechanism 3 is installed in the first shell 1, and is used to quickly cut off the circuit through electromagnetic mechanism and mechanical action to prevent the generation of arc. The second arc extinguishing mechanism 4 is installed in the second shell 2, and the expansion of the arc is further suppressed by the guide plate and the arc extinguishing bar to ensure that the arc can be extinguished quickly. The first terminal 5 is fixedly installed on the top of the first shell 1, and is used to connect the input end of the external circuit to introduce current into the device. The second terminal 6 is fixedly installed at the bottom ends on both sides of the first shell 1, and is used to connect the output end of the external circuit to lead the current out of the device.

[0021] In this embodiment, the first arc extinguishing mechanism 3 includes a coil 7 fixedly installed at the bottom of the first shell 1, a pair of second terminals 6 penetrate into the first shell 1 and connect to the coil 7, and a first spring 8 is fixedly installed at the bottom center of the first shell 1. The first spring 8 is located in the middle of the coil 7 and its top is fixedly connected to an iron block 9.

[0022] The coil 7 is fixedly mounted at the bottom of the first housing 1 and connected to the second terminal 6. When an abnormal current appears in the circuit, the magnetic field generated by the coil will quickly act on the iron block 9 to achieve a quick response. The first spring 8 is fixedly mounted at the bottom center of the first housing 1, located in the middle of the coil 7, and its top is fixedly connected to the iron block 9 to provide initial pressure and restoring force to ensure the normal operation of the iron block 9. The iron block 9 is fixedly mounted on the top of the first spring 8. When the coil 7 generates a magnetic field, the iron block 9 is affected by the magnetic field and drives the contact plate 12 to move through the connecting rod 10 to achieve a quick cutoff of the current.

[0023] In this embodiment, a connecting rod 10 is fixedly mounted on the top of the iron block 9 , a partition 11 is fixedly mounted in the middle of the first shell 1 , and the top of the connecting rod 10 passes through the partition 11 and is fixedly mounted in the middle of the contact plate 12 .

[0024] Among them, the partition 11 is fixedly installed in the middle of the first shell 1, dividing the interior of the first shell into two parts, providing structural support, and isolating the contact plate 12 and the coil 7. The contact plate 12 is fixedly installed on the top of the connecting rod 10, and a second spring 13 is installed between the contact plate 12 and the partition 11. Contact grooves 15 are opened at both ends of the contact plate 12, which are electrically connected to the contact head 14. When the iron block 9 moves, the contact plate 12 is separated from the contact head 14 to cut off the circuit.

[0025] In this embodiment, a second spring 13 is fixedly installed between the contact plate 12 and the partition plate 11 and wraps the connecting rod 10. A contact head 14 is fixedly installed at the bottom of the first terminal 5 and inside the first shell 1. The contact head 14 is electrically connected to both ends of the contact plate 12 respectively, and contact grooves 15 are provided at both ends of the contact plate 12.

[0026] Among them, the second spring 13 is fixedly installed between the contact plate 12 and the partition 11, wrapping the connecting rod 10, providing the restoring force of the contact plate 12, and ensuring that the contact plate 12 can be quickly reset after the iron block 9 moves. The contact head 14 is fixedly installed at the bottom of the first terminal 5, located inside the first shell 1, and is electrically connected to the two ends of the contact plate 12 respectively to realize the conduction and disconnection of the circuit. The contact groove 15 is opened at both ends of the contact plate 12, which is used to fit the contact column 17 to ensure the electrical connection between the contact plate 12 and the contact column 17.

[0027] In this embodiment, the second arc extinguishing mechanism 4 includes a first guide piece 16 fixedly connected to the side of the contact head 14, contact columns 17 are fixedly installed on both sides of the partition 11, and second guide pieces 18 are fixedly installed on the side of the contact column 17. The contact groove 15 is fitted with the contact column 17 to achieve electrical connection.

[0028] The first guide piece 16 is fixedly connected to the side of the contact head 14 and extends into the second housing 2, and is used to guide the arc into the arc extinguishing bar 20 to improve the arc extinguishing effect. The contact column 17 is fixedly installed on both sides of the partition 11, and the second guide piece 18 is fixedly installed on the side, which is fitted with the contact groove 15 to achieve electrical connection and provide a conduction path for the circuit. The second guide piece 18 is fixedly installed on the side of the contact column 17, extends into the second housing 2, and cooperates with the first guide piece 16 to guide the arc to the arc extinguishing bar 20, further improving the arc extinguishing effect.

[0029] In this embodiment, the first guide piece 16 and the second guide piece 18 both extend into the interior of the second shell 2, and a support piece 19 is fixedly installed in the middle of the side surfaces of the first guide piece 16 and the second guide piece 18. A plurality of groups of arc extinguishing strips 20 are fixedly installed on the support piece 19 at equal intervals, and an air vent 21 is opened through the middle of the side surface of the second shell 2.

[0030] Among them, the support sheet 19 is fixedly installed in the middle of the side of the first guide sheet 16 and the second guide sheet 18, and is used to fix and support the arc extinguishing bar 20 to ensure the stability and effectiveness of the arc extinguishing bar 20. The arc extinguishing bar 20 is fixedly installed on the support sheet 19 and arranged at equal distances, which physically divides the arc, reduces the arc energy, accelerates the extinguishing of the arc, and improves the arc extinguishing efficiency. The air vent 21 is opened in the middle of the side of the second housing 2, which is used for heat dissipation inside the device to prevent equipment damage caused by high temperature, and accelerates the cooling of the arc through air flow, further improving the arc extinguishing effect.

[0031] In specific applications, the first housing 1 is used as the main body and installed at a desired position. In the initial state of the device, the contact plate 12 is in close contact with the contact head 14, and the circuit is in a conducting state.

[0032] When an abnormal current appears in the circuit, the second terminal 6 introduces the current into the coil 7. The coil 7 generates a magnetic field, which acts on the iron block 9.

[0033] After being acted upon by the magnetic field, the iron block 9 overcomes the initial pressure of the first spring 8 and moves downward, driving the contact plate 12 to move downward through the connecting rod 10 .

[0034] The contact plate 12 moves downward and separates from the contact head 14, the circuit is cut off, and the current is interrupted. At the moment of circuit cutting, an arc is generated between the contact head 14 and the contact plate 12. The first guide piece 16 on the side of the contact head 14 and the second guide piece 18 on the side of the contact column 17 stretch the arc and guide it to the arc extinguishing bar 20 area inside the second shell 2. The arc extinguishing bar 20 physically divides the arc, reduces the arc energy, and accelerates the extinction of the arc. The arc extinguishing bars 20 are arranged equidistantly and fixedly mounted on the support sheet 19, and accelerate the extinction of the arc by physical division and energy dispersion. The air vent 21 in the middle of the side of the second shell 2 accelerates the cooling of the arc through air flow, further improving the arc extinguishing effect. When the abnormal current disappears, the iron block 9 is reset under the restoring force of the first spring 8, and the contact plate 12 moves upward under the restoring force of the second spring 13, re-contacts with the contact head 14, and the circuit resumes the conductive state.

[0035] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] 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 replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An arc extinguishing control circuit device, characterized in that: The invention comprises a first shell (1), second shells (2) are fixedly mounted on the top ends of both sides of the first shell (1), a first arc extinguishing mechanism (3) is mounted in the first shell (1), a second arc extinguishing mechanism (4) is mounted in the second shell (2), a pair of through holes are opened on the top of the first shell (1) and a first terminal (5) is fixedly mounted thereon, and through holes are opened on the bottom ends of both sides of the first shell (1) and a second terminal (6) is fixedly mounted thereon.

2. An arc extinguishing control circuit device according to claim 1, characterized in that: The first arc extinguishing mechanism (3) comprises a coil (7) fixedly mounted on the bottom of the first housing (1); a pair of the second connecting posts (6) penetrate into the first housing (1) and are connected to the coil (7); a first spring (8) is fixedly mounted at the center of the bottom of the first housing (1); the first spring (8) is located in the middle of the coil (7) and its top is fixedly connected to an iron block (9).

3. The arc extinguishing control circuit device according to claim 1, characterized in that: A connecting rod (10) is fixedly mounted on the top of the iron block (9), a partition plate (11) is fixedly mounted in the middle of the first shell (1), and the top of the connecting rod (10) passes through the partition plate (11) and is fixedly mounted in the middle of the contact plate (12).

4. The arc extinguishing control circuit device according to claim 1, characterized in that: A second spring (13) is fixedly installed between the contact plate (12) and the partition plate (11) and wraps around the connecting rod (10); a contact head (14) is fixedly installed at the bottom of the first terminal (5) and inside the first shell (1); the contact head (14) is electrically connected to both ends of the contact plate (12), and both ends of the contact plate (12) are provided with contact grooves (15).

5. The arc extinguishing control circuit device according to claim 1, characterized in that: The second arc extinguishing mechanism (4) comprises a first guide piece (16) fixedly connected to a side surface of the contact head (14), contact columns (17) are fixedly mounted on both sides of the partition plate (11), a second guide piece (18) is fixedly mounted on a side surface of the contact column (17), and the contact groove (15) is sleeved with the contact column (17) to achieve electrical connection.

6. The arc extinguishing control circuit device according to claim 1, characterized in that: The first guide piece (16) and the second guide piece (18) both extend into the interior of the second shell (2); a support piece (19) is fixedly mounted in the middle of the side surfaces of the first guide piece (16) and the second guide piece (18); a plurality of groups of arc extinguishing strips (20) are fixedly mounted on the support piece (19) at equal intervals; and a vent hole (21) is provided through the middle of the side surface of the second shell (2).

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