Heat dissipation and fire extinguishing integrated device for power supply change-over switch of electric furnace

Abstract

The utility model relates to the technical field of switch equipment, in particular to a heat dissipation and fire extinguishing integrated device for a power supply change-over switch of an electric furnace, which comprises a plurality of bases, a power supply input current-conducting plate, a power supply output current-conducting plate I, a power supply output current-conducting plate II, a power supply change-over current-conducting plate and a change-over handle assembly, the power supply input current-conducting plate, the first power supply output current-conducting plate and the second power supply output current-conducting plate are arranged on the base, the base is provided with a water nozzle and a nozzle, cooling water is arranged in the base, the water nozzle is connected with a water cooling system, and the nozzle is connected with a fire extinguishing control system, so that the situation that the temperature is too high when large current passes through the electric furnace power supply change-over switch is prevented; the water cooling and fire extinguishing device is simple in structure, avoids overheating or damage, can extinguish fire in time when a fire occurs, improves stability and safety, integrates water cooling and fire extinguishing, and reduces occupied space.

Description

Technical Field

[0001] This utility model relates to the field of switchgear technology, specifically to an integrated heat dissipation and fire extinguishing device for an electric furnace power supply switching switch. Background Technology

[0002] Currently, the changeover switch (knife switch) used for powering medium-frequency induction furnaces generally consists of a handle, a contact blade, a stationary socket, a hinge support, and an insulating base plate. When the operator holds the handle and rotates the contact blade around the hinge support until it is inserted into the stationary socket, the circuit is switched on. At this point, a current path is formed by the hinge support, the contact blade, and the stationary socket. If the operator rotates the contact blade in the opposite direction around the hinge support, disengaging it from the stationary socket, the circuit is switched off. However, medium-frequency induction furnaces have high power and high operating current. The changeover switch generates a lot of heat when carrying a large current. If this heat is not dissipated in time, the temperature of the changeover switch will rise rapidly, leading to burnout and even a fire. Utility Model Content

[0003] The purpose of this invention is to provide an integrated device for heat dissipation and fire extinguishing of electric furnace power supply switching switch, in order to overcome the problems existing in the existing equipment.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an integrated heat dissipation and fire extinguishing device for a power supply switching switch of an electric furnace, comprising a base, a power supply input conductive plate, a power supply output conductive plate one, a power supply output conductive plate two, a power supply switching conductive plate, and a switching handle assembly. Multiple bases are provided, spaced apart from each other. The power supply input conductive plate, the power supply output conductive plate one, and the power supply output conductive plate two are correspondingly arranged on the multiple bases. Each base is provided with a water nozzle and a water spout. A cavity is provided inside the base, filled with cooling water. The water spout is connected to a water cooling system, and the nozzle is connected to a fire extinguishing control system. The power supply input conductive plate is located between the power supply output conductive plate one and the power supply output conductive plate two. The power supply switching conductive plate is hinged to the power supply input conductive plate and is in electrical contact with it. The switching handle assembly is connected to the power supply switching conductive plate and is used to switch the power supply switching conductive plate to electrical contact with either the power supply output conductive plate one or the power supply output conductive plate two.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] As a further improvement to the above technical solution, four power supply switching conductive plates are arranged side by side, with two adjacent power supply switching conductive plates forming a group. Two power supply input conductive plates, one power supply output conductive plate, and two power supply output conductive plates are arranged side by side. One end of either the first or the second power supply output conductive plate is sandwiched between two adjacent power supply switching conductive plates. Each group of power supply switching conductive plates is provided with a disc-shaped pad.

[0007] As a further improvement to the above technical solution, a slot is provided on one side of the base, and the slot is connected to the cavity of the base. The power input conductive plate, the power output conductive plate one, and the power output conductive plate two are correspondingly inserted into the slot of the base, and the power input conductive plate, the power output conductive plate one, and the power output conductive plate two are cooled by the cooling water in the base.

[0008] As a further improvement to the above technical solution, the base, power input conductive plate, power output conductive plate one, power output conductive plate two, and power switching conductive plate are made of copper plates and their surfaces are plated with silver.

[0009] As a further improvement to the above technical solution, the base is fixed on an insulating plate, the insulating plate comprising a PTFE plate, an epoxy plate and a panel arranged in sequence, and the power input conductive plate, the power output conductive plate one and the power output conductive plate two are respectively fixed on the PTFE plate.

[0010] As a further improvement to the above technical solution, the switching handle assembly includes a connecting block that is insulated from the power supply switching conductive plate, a handle seat fixed on the insulating plate, a handle hinged to the handle seat, and a pull rod connecting the connecting block and the handle.

[0011] As a further improvement to the above technical solution, insulators are provided between the two sides of the connecting block and each set of power supply switching conductive plates. The insulating plates are provided with through holes. One end of the pull rod passes through the through hole of the insulating plate and is hinged to the connecting block. The other end of the pull rod is eccentrically hinged to the handle relative to the rotation center of the handle.

[0012] As a further improvement to the above technical solution, each base is provided with two water nozzles for cooling water inlet and outlet. The water cooling system includes a heat dissipation plate, a water pump and a water tank connected in sequence by pipes. The water nozzles on the base are connected to the heat dissipation plate and the water tank by pipes. The heat dissipation plate is provided with a cooling water channel for cooling water flow. The water tank is filled with cooling water and a compressor is installed on the water tank. The base, heat dissipation plate, water pump and water tank form a closed loop for cooling water circulation.

[0013] As a further improvement to the above technical solution, multiple nozzles are provided, with the nozzles facing the power input conductive plate, the power output conductive plate one, and the power output conductive plate two. The fire extinguishing control system includes a solenoid valve, a smoke sensor, and a PLC controller that communicates with the solenoid valve and the smoke sensor. Each nozzle is equipped with a solenoid valve to control the water spray.

[0014] The beneficial effects of this utility model are as follows: The above-mentioned integrated heat dissipation and fire extinguishing device for electric furnace power supply switching switch is designed by placing the power input conductive plate, the power output conductive plate one, and the power output conductive plate two on a base, and providing a water nozzle and a water spout on the base. Cooling water is provided inside the base, the water spout is connected to a water cooling system, and the water spout is connected to a fire extinguishing control system. This prevents the electric furnace power supply switching switch from overheating when passing a large current, avoiding overheating or damage. In addition, it can extinguish fires in a timely manner in the event of a fire, improving the stability and safety of the device. Furthermore, the water cooling and fire extinguishing are integrated, reducing space occupation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a front view of the electric furnace power supply switching and heat dissipation fire extinguishing integrated device provided in a preferred embodiment of this utility model;

[0017] Figure 2 yes Figure 1 Top view of the integrated heat dissipation and fire extinguishing device with electric furnace power supply switching switch;

[0018] Figure 3 This is a schematic diagram of the water cooling system;

[0019] Figure 4 This is a schematic diagram of the fire extinguishing control system;

[0020] In the diagram: 1. Base; 2. Power input conductive plate; 3. Power output conductive plate one; 4. Power output conductive plate two; 5. Power switching conductive plate; 51. Disc-shaped gasket; 61. Water nozzle; 62. Heat sink; 63. Water pump; 64. Water tank; 71. Nozzle; 72. Solenoid valve; 73. PLC controller; 74. Smoke sensor; 8. Insulating plate; 81. Through hole; 91. Connecting block; 92. Handle base; 93. Handle; 94. Pull rod; 95. Insulator. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figures 1 to 4 As shown in the figure, a preferred embodiment of this utility model provides an integrated heat dissipation and fire extinguishing device for an electric furnace power supply switching switch, comprising a base 1, a power input conductive plate 2, a first power output conductive plate 3, a second power output conductive plate 4, a power supply switching conductive plate 5, and a switching handle assembly. The power input conductive plate 2, the first power output conductive plate 3, the second power output conductive plate 4, the power supply switching conductive plate 5, and the switching handle assembly constitute an electric furnace power supply switching switch. Multiple bases 1 are provided, spaced apart from each other. The power input conductive plate 2, the first power output conductive plate 3, and the second power output conductive plate 4 are correspondingly arranged on the multiple bases 1. Each base 1 is equipped with two water nozzles 61 and multiple nozzles 71. The base 1 has an internal cavity filled with cooling water. The water nozzles 61 are connected to a water cooling system, and the nozzles 71 are connected to a fire extinguishing control system. The power input conductive plate 2 is located between the power output conductive plate 3 and the power output conductive plate 4. The power switching conductive plate 5 is hinged to the power input conductive plate 2 and is in electrical contact with the power input conductive plate 2. The switching handle assembly is connected to the power switching conductive plate 5 and is used to switch the power switching conductive plate 5 to be in electrical contact with the power output conductive plate 3 or the power output conductive plate 4.

[0025] A slot is provided on one side of the base 1, and the slot communicates with the cavity of the base 1. The power input conductive plate 2, the power output conductive plate one 3, and the power output conductive plate two 4 are correspondingly inserted into the slot of the base 1, so that the power input conductive plate 2, the power output conductive plate one 3, and the power output conductive plate two 4 are in thermally conductive contact with the base 1, and are cooled by cooling water in the base 1. In this embodiment, the base 1, the power input conductive plate 2, the power output conductive plate one 3, the power output conductive plate two 4, and the power switching conductive plate 5 are made of copper plate with silver plating on their surface.

[0026] In this embodiment, four power supply switching conductive plates 5 are arranged side by side, with two adjacent power supply switching conductive plates 5 forming a group. Two power supply input conductive plates 2, two power supply output conductive plates 3, and two power supply output conductive plates 4 are arranged side by side. By clamping one end of the power supply output conductive plate 3 or the power supply output conductive plate 4 between two adjacent power supply switching conductive plates 5, electrical contact is achieved between the power supply switching conductive plates 5 and the power supply output conductive plates 3 or 4. Each group of power supply switching conductive plates 5 is provided with a disc-shaped gasket 51 for clamping the power supply output conductive plates 3 or 4.

[0027] The base 1 is fixed on the insulating plate 8. In this embodiment, the insulating plate 8 includes a PTFE plate, an epoxy plate and a panel arranged in sequence. The power input conductive plate 2, the power output conductive plate 3 and the power output conductive plate 4 are respectively fixed on the PTFE plate.

[0028] The switching handle assembly acts on the power supply switching conductive plate 5 to rotate it, thereby making the power supply switching conductive plate 5 electrically contact the power supply output conductive plate 3 or the power supply output conductive plate 4. Specifically, the switching handle assembly includes a connecting block 91 insulated from the power supply switching conductive plate 5, a handle seat 92 fixed on an insulating plate 8, a handle 93 hinged to the handle seat 92, and a pull rod 94 connecting the connecting block 91 and the handle 93. Insulators 95 are provided on both sides of the connecting block 91 between it and each group of power supply switching conductive plates 5. The insulating plate 8 has through holes 81. One end of the pull rod 94 passes through the through hole 81 of the insulating plate 8 and is hinged to the connecting block 91. The other end of the pull rod 94 is eccentrically hinged to the handle 93 relative to the rotation center of the handle 93, so that when the handle 93 is pulled, the power supply switching conductive plate 5 is rotated by the pull rod 94.

[0029] Each base 1 is provided with two water nozzles 61 for cooling water inlet and outlet. The water cooling system includes a heat dissipation plate 62, a water pump 63 and a water tank 64 connected in sequence by pipes. The water nozzles 61 on the base 1 are connected to the heat dissipation plate 62 and the water tank 64 by pipes. The heat dissipation plate 62 is provided with a cooling water channel for cooling water flow. The water tank 64 is filled with cooling water and a compressor is installed on the water tank 64. The base 1, heat dissipation plate 62, water pump 63 and water tank 64 form a closed loop for cooling water circulation.

[0030] The nozzles 71 on the base 1 are used to spray water for fire extinguishing in the event of a fire. Multiple nozzles 71 are provided, with their nozzles facing the power input conductive plate 2, the power output conductive plate 3, and the power output conductive plate 4. The fire extinguishing control system includes a solenoid valve 72, a smoke sensor 74, and a PLC controller 73 communicatively connected to the solenoid valve 72 and the smoke sensor 74. Each nozzle 71 is equipped with a solenoid valve 72 to control the water spray. In the event of a fire, the smoke sensor 74 receives a signal and outputs a signal to the PLC controller 73, which then controls the solenoid valve 72 to open, causing the nozzle 71 to spray water for fire extinguishing. Preferably, the water cooling system is equipped with a booster pump and a pressure regulating valve to pressurize the cooling water during fire extinguishing, ensuring the nozzles 71 spray pressurized water and guaranteeing the fire extinguishing effect.

[0031] The aforementioned integrated heat dissipation and fire extinguishing device for the electric furnace power supply switch is installed on the power cabinet during use. The power input conductive plate 2 is connected to the frequency converter via wires, and the power output conductive plates 3 and 4 are connected to the two electric furnaces via wires. The base 1, heat dissipation plate 62, water pump 63, and water tank 64 form a closed loop for circulating cooling water. The power input conductive plate 2, power output conductive plate 3, and power output conductive plate 4 are inserted into the slots of the base 1 respectively. The cooling water in the base 1 cools the power input conductive plate 2, power output conductive plate 3, and power output conductive plate 4, removing the heat generated by the electric furnace power supply switch and preventing the switch from overheating when carrying a large current. In the event of a fire, the smoke sensor 74 receives a signal and outputs a signal to the PLC controller 73. The PLC controller 73 then controls the solenoid valve 72 to open, causing the nozzle 71 to spray cooling water to extinguish the fire, ensuring the electrical safety of the equipment.

[0032] The aforementioned integrated heat dissipation and fire extinguishing device for the electric furnace power supply switching switch is designed by mounting the power input conductive plate 2, the power output conductive plate 1 3, and the power output conductive plate 2 4 on a base 1. A water nozzle 61 and a spray nozzle 71 are also mounted on the base 1. Cooling water is provided inside the base 1. The water nozzle 61 is connected to a water cooling system, and the spray nozzle 71 is connected to a fire extinguishing control system. This design prevents the electric furnace power supply switching switch from overheating when carrying a large current, thus avoiding overheating or damage. Furthermore, it enables timely fire extinguishing in the event of a fire, improving the stability and safety of the device. The integrated water cooling and fire extinguishing system also reduces space requirements.

[0033] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0034] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A combined heat dissipation and fire extinguishing device for an electric furnace power supply switching switch, characterized in that: The system includes a base, a power input conductive plate, a first power output conductive plate, a second power output conductive plate, a power switching conductive plate, and a switching handle assembly. Multiple bases are spaced apart from each other. The power input conductive plate, the first power output conductive plate, and the second power output conductive plate are correspondingly mounted on these bases. Each base is equipped with a water nozzle and a water spout. The base has an internal cavity filled with cooling water. The water spout is connected to a water cooling system, and the nozzle is connected to a fire extinguishing control system. The power input conductive plate is located between the first and second power output conductive plates. The power switching conductive plate is hinged to the power input conductive plate and is in electrical contact with it. The switching handle assembly is connected to the power switching conductive plate and is used to switch the power switching conductive plate to electrical contact with either the first or second power output conductive plate.

2. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching as described in claim 1, characterized in that: The power supply switching conductive plates are arranged in four rows, with two adjacent power supply switching conductive plates forming a group. The power supply input conductive plate, power supply output conductive plate one, and power supply output conductive plate two are each arranged in two rows. One end of power supply output conductive plate one or power supply output conductive plate two is sandwiched between the two adjacent power supply switching conductive plates. Each group of power supply switching conductive plates is provided with a disc-shaped pad.

3. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 2, characterized in that: A slot is provided on one side of the base, and the slot is connected to the cavity of the base. The power input conductive plate, the power output conductive plate one, and the power output conductive plate two are inserted into the slot of the base respectively. The power input conductive plate, the power output conductive plate one, and the power output conductive plate two are cooled by the cooling water in the base.

4. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 3, characterized in that: The base, power input conductive plate, power output conductive plate one, power output conductive plate two, and power switching conductive plate are made of copper plate with silver plating on their surface.

5. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 4, characterized in that: The base is fixed on an insulating board, which includes a PTFE plate, an epoxy plate, and a panel arranged in sequence. The power input conductive plate, the power output conductive plate one, and the power output conductive plate two are respectively fixed on the PTFE plate.

6. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 5, characterized in that: The switching handle assembly includes a connecting block that is insulated from the power switching conductive plate, a handle seat fixed to the insulating plate, a handle hinged to the handle seat, and a pull rod connecting the connecting block and the handle.

7. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 6, characterized in that: Insulators are provided on both sides of the connecting block and between each set of power supply switching conductive plates. The insulating plates have through holes. One end of the pull rod passes through the through hole of the insulating plate and is hinged to the connecting block. The other end of the pull rod is eccentrically hinged to the handle relative to the rotation center of the handle.

8. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 1, characterized in that: Each base is equipped with two water nozzles for cooling water inlet and outlet. The water cooling system includes a heat dissipation plate, a water pump and a water tank connected in sequence by pipes. The water nozzles on the base are connected to the heat dissipation plate and the water tank by pipes. The heat dissipation plate has a cooling water channel for cooling water flow. The water tank contains cooling water and is equipped with a compressor. The base, heat dissipation plate, water pump and water tank form a closed loop for cooling water circulation.

9. The integrated heat dissipation and fire extinguishing device for electric furnace power supply switching according to claim 8, characterized in that: The nozzles are arranged in multiple ways, with the nozzle orifices facing the power input conductive plate, the power output conductive plate one, and the power output conductive plate two. The fire extinguishing control system includes a solenoid valve, a smoke sensor, and a PLC controller that communicates with the solenoid valve and the smoke sensor. Each nozzle is equipped with a solenoid valve that controls the water spray.

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