Multiple induction melting furnaces and control cabinet cooling devices for continuous casting and continuous rolling production line

Technical field

An improvement of multiple induction melting furnaces and water cooling devices used in multiple continuous casting and continuous rolling production lines, specifically a multiple induction melting furnaces and control cabinets used in multiple continuous casting and continuous rolling production lines The multiple water cooling devices of the company are changed to use one cooling device, which simplifies the cooling device and reduces the investment of multiple cooling devices. It is suitable for the water cooling device of medium and above continuous casting and continuous rolling production enterprises.

Background technique

    Most of the medium and above continuous casting and continuous rolling production enterprises have more than 4 continuous casting and continuous rolling production lines, and each continuous casting and continuous rolling production line,

In addition to a continuous casting and rolling machine, it is also equipped with an induction melting furnace and a control cabinet. Since the induction melting furnace and the control cabinet need to be cooled by cold water, a cooling tower is also required. The tower should also be equipped with a circulating water pump and cooling

Water tank. For example, our company has 19 continuous casting and continuous rolling production lines, corresponding to 19 induction melting furnaces and 19 control cabinets. Each induction melting furnace and control cabinet is equipped with a closed cooling tower and its circulating water pump and cold water. Therefore, the entire production workshop needs to be equipped with 19 closed cooling towers and their circulating water pumps and cold water tanks. The shortcomings of the induction melting furnace and water cooling device used by this continuous casting and continuous rolling production enterprise are: first, the large number and large occupied area cause the workshop to be crowded, chaotic and disorderly, and reduce the utilization area of the workshop; second, the structure is complex , There are many repetitive equipment, which increases the investment.

Change item

To provide a cooling device for multiple induction melting furnaces and control cabinets that can expand the utilization area of the workshop, simplify the structure, reduce the investment, and be more convenient to use. The multiple induction melting furnaces and control cabinet heat exchange water centralized circulating cooling devices include a row of induction melting furnaces used in multiple continuous casting and continuous rolling production lines in the workshop. Each induction melting furnace is installed side by side with a control cabinet. Each induction melting furnace is equipped with a cold water input pipe that is connected to the inlet end of the spiral cooling pipe in the furnace and a heat exchange water output pipe that is connected to the outlet end of the spiral cooling pipe in the furnace; for the same reason, each control cabinet is equipped The cold water input pipe of the cooling device in the cabinet and the water output pipe after the heat exchange of the cooling device in the cabinet are characterized in that: the cold water input pipe on each induction melting furnace and the cold water input of the corresponding cabinet cooling device on each control cabinet The pipe is connected to the cold water input main pipe at the same time, the cold water input main pipe is connected to the outlet of the cold water input pump through the pressure pipe, and the suction port of the cold water input pump is connected to the cold water in the cold pool outside the workshop through the cold water suction pipe; each induction melting furnace described After the heat exchange water output pipe on the upper and the corresponding cabinet cooling device on each control cabinet, the heat exchange water output pipe is connected with the post heat exchange water output header at the same time. After the heat exchange, one end of the water output header passes through the heat exchange and the water flows out. The pipe is connected to the position above the water surface of the cooling pool outside the workshop, and the bottom of the cooling pool is connected with the cold pool through a connecting pipe; the upper side of the cooling pool is provided with a cooling tower, and the cooling tower water inlet pipe is connected to the hot water input pump , The suction port of the hot water input pump is connected with a telescopic pipe, the end of the telescopic pipe is connected with a float-type suction port, and the cooling water outlet pipe of the cooling tower is connected to the cooling pool. It is also implemented through the following measures: the upper mouth of the cooling tower is provided with a cold water supplement nozzle, which is connected to the tap water pipe; the solenoid valve switch of the cold water supplement nozzle is connected to the temperature control switch at the inlet of the connecting pipe at the bottom of the cooling pool through a wire. When the temperature at the bottom of the cooling pool has not fallen to room temperature, the temperature control switch is turned off. At this time, the solenoid valve switch of the cold water supplement nozzle is turned on to spray cold water; on the contrary, when the temperature at the bottom of the cooling pool has dropped to room temperature, the temperature When the control switch is turned on, the solenoid valve of the cold water replenishing nozzle is closed at this time to stop spraying cold water, and at the same time, the water at the bottom of the cooling pool flows into the cold pool. The upper mouth of the cooling tower is equipped with an axial fan, and an air inlet grille is arranged at the waist of the cooling tower; the upper part of the inner cavity of the cooling tower is provided with a rotating nozzle, and a row of lower nozzles is arranged on the bottom wall of the rotating nozzle. The lower side of the middle of the rotating nozzle is rotatably connected with the upper opening of the vertical section of the cooling tower inlet pipe in the cooling tower. The upper side of the middle of the rotating nozzle is connected to the shaft end of the axial flow fan through a damping sleeve. When the axial flow fan rotates At the same time, the resistance of the damping sleeve drives the rotating nozzle to rotate at a low speed, which also prevents the rotating nozzle from moving upwards under the pressure of water from the upper mouth of the vertical section of the cooling tower inlet pipe in the cooling tower, through the rotating nozzle and its row The lower nozzle realizes the rotation and sprinkling of the higher temperature water entering the cooling tower and expands the heat exchange area; the middle and upper part of the cooling tower is provided with two layers of grids to improve the uniformity of heat exchange and change different intervals The flow rate and flow state.

An overflow pipe is provided on one side of the cooling pool. The cooling tower, cooling pool, and cold pool are all located on the north side of the workshop to avoid sunlight; the cooling tower and the hot water exchange input pump are installed on the upper side of the cooling pool through a cover plate. There are 18-24 induction melting furnaces and corresponding control cabinets, which are suitable for medium-sized continuous casting and continuous rolling production enterprises. The damping sleeve is made of friction material. For large-scale continuous casting and continuous rolling production enterprises, it can also be used by increasing the cooling capacity of the cooling tower. The multiple induction melting furnaces and the control cabinet heat exchange water centralized circulating cooling device are compared with a cooling tower corresponding to each induction melting furnace and control cabinet in the multiple continuous casting and continuous rolling production lines originally used. 18-24 induction melting furnaces 1 and the corresponding control cabinet 2 are cooled, so 17-23 cooling towers are omitted, which can save more than 1 million yuan in investment; because the entire cooling tower and pool are built outside the workshop, it is not Occupy the workshop area and increase the utilization rate of the workshop; because both air cooling and water cooling are used, the cooling effect of the cooling tower is improved; and a temperature control device is added to ensure that the temperature of the cold water pool is at normal temperature, thereby ensuring the induction melting furnace And the cooling effect of the control cabinet.

Description of the drawings