Search

CN-121972634-A - Deep well casting system for preventing deep well explosion

CN121972634ACN 121972634 ACN121972634 ACN 121972634ACN-121972634-A

Abstract

The invention provides a deep well casting system for preventing deep well explosion, which comprises a smelting furnace, a middle converter, a deep well casting machine, an aluminum liquid conveying mechanism and a first emergency storage pool, wherein the deep well casting machine comprises a casting deep well, a crystallizer and a diverter, the middle converter is provided with an overflow port, the first emergency storage pool is used for receiving and storing aluminum liquid, the middle converter is internally provided with an overflow control device which is used for monitoring the liquid level of the aluminum liquid in the middle converter and controlling the opening and closing of the overflow port, the aluminum liquid conveying mechanism comprises a first launder and a second launder, the first launder is used for communicating a first discharge port of the smelting furnace with a first feed port of the middle converter, the second launder is used for communicating a second discharge port of the middle converter with a second feed port of the diverter, the second discharge port is lower than the second feed port, the first launder is provided with a first liquid level monitoring interlocking device, the second launder is provided with a second liquid level monitoring interlocking device, and the second launder is provided with an aluminum liquid lifting pump.

Inventors

  • SHI YONGGANG
  • ZHOU JUN
  • TAN YINGFENG
  • REN SHI
  • ZHU JINGJUN

Assignees

  • 苏州市穆琪环境科技工程有限公司

Dates

Publication Date
20260505
Application Date
20260214

Claims (10)

  1. 1. The deep well casting system for preventing deep well explosion is characterized by comprising a smelting furnace (10), a transfer furnace (20), a deep well casting machine (30), an aluminum liquid conveying mechanism (40) and a first emergency storage pool (50), wherein the smelting furnace (10) is a tilting smelting furnace, the aluminum liquid conveying mechanism (40) is sequentially communicated with the smelting furnace (10), the transfer furnace (20) and the deep well casting machine (30), and the deep well casting machine (30) comprises a casting deep well (31), a crystallizer (32) for cooling and solidifying aluminum liquid and a diverter (33) for receiving the aluminum liquid and diverting the aluminum liquid to the crystallizer (32); The automatic aluminum liquid level monitoring device comprises a transfer furnace (20), a first emergency storage pool (50), an overflow control device (24) and an overflow control device (24), wherein the transfer furnace (20) is provided with an overflow port (23) communicated with the first emergency storage pool (50), the first emergency storage pool (50) is used for receiving and storing aluminum liquid flowing out of the overflow port (23), and the overflow control device (24) is used for monitoring the liquid level of the aluminum liquid in the transfer furnace (20) and controlling the opening and closing of the overflow port (23) so as to maintain the liquid level of the aluminum liquid in the transfer furnace (20) at a safe height; The aluminum liquid conveying mechanism (40) comprises a first launder (41) and a second launder (42), the first launder (41) is used for communicating a first discharge hole (11) of the smelting furnace (10) with a first feed hole (21) of the transfer furnace (20), the second launder (42) is used for communicating a second discharge hole (22) of the transfer furnace (20) with a second feed hole (331) of the diverter (33), and the second discharge hole (22) is lower than the second feed hole (331); The first launder (41) is provided with a first liquid level monitoring interlocking device (60), the first liquid level monitoring interlocking device (60) is used for monitoring the liquid level change of the aluminum liquid in the first launder (41) and controlling the communication state of the first discharge port (11) and the first launder (41), the second launder (42) is provided with a second liquid level monitoring interlocking device (70), and the second liquid level monitoring interlocking device (70) is used for monitoring the liquid level change of the aluminum liquid in the second launder (42) and controlling the communication state of the second feed port (331) and the second launder (42); the second launder (42) is further provided with an aluminum liquid lifting pump (80) and the aluminum liquid lifting pump (80) is close to the second discharge hole (22), and the aluminum liquid lifting pump (80) is used for lifting and conveying the aluminum liquid of the transfer furnace (20) to the flow divider (33).
  2. 2. Deep well casting system for preventing deep well explosions according to claim 1, characterized in that said first level monitoring interlock (60) comprises a first level sensor for monitoring the level of aluminium liquid in said first launder (41) and a first blocking gate valve for controlling the communication status of said first discharge opening (11) with said first launder (41).
  3. 3. Deep well casting system for preventing deep well explosions according to claim 1, characterized in that the second level monitoring interlock (70) comprises a second level sensor for monitoring the level of aluminium liquid in the second launder (42) and a second blocking gate valve for controlling the communication between the second feed opening (331) and the second launder (42).
  4. 4. Deep well casting system for preventing deep well explosion according to claim 1, characterized in that the overflow control device (24) comprises a third liquid level sensor (241) arranged on the middle converter (20) and an overflow gate valve (242) for controlling the opening and closing of the overflow port (23).
  5. 5. Deep well casting system according to claim 1, characterized in that the second launder (42) is provided with a second emergency storage pool (90) in communication, the second emergency storage pool (90) being adapted to receive and store aluminium liquid remaining on the second launder (42) when the second level monitoring interlock (70) blocks the communication path of the second feed opening (331) with the second launder (42).
  6. 6. Deep well casting system for preventing deep well explosions according to claim 5, characterized in that a third blocking gate valve (421) is provided at the connection of the second emergency storage tank (90) with the second runner (42).
  7. 7. Deep well casting system according to claim 1, wherein the aluminium liquid conveying means (40) further comprises a third launder (43), the third launder (43) communicating the first launder (41) with the second launder (42), wherein the first feed opening (21) is lower than the second feed opening (331) and the first feed opening (21) is lower than the first discharge opening (11).
  8. 8. Deep well casting system for preventing deep well explosion according to claim 7, characterized in that a backflow control gate valve (431) is arranged in the third launder (43), and the backflow control gate valve (431) is used for controlling the opening and closing of the third launder (43).
  9. 9. The deep well casting system for preventing deep well explosion according to claim 1, further comprising an emergency power supply device (400), a high-level emergency water source (500) and an emergency hydraulic device (600), wherein when power is interrupted, the emergency power supply device (400) supplies power to the deep well casting machine (30) in a zero-delay manner, the high-level emergency water source (500) supplies cooling water to the deep well casting machine (30), and when hydraulic power fails, the emergency hydraulic device (600) supplies hydraulic power to the deep well casting machine (30).
  10. 10. Deep well casting system for preventing deep well explosions according to claim 1, characterized in that said transfer furnace (20) is a stationary holding furnace.

Description

Deep well casting system for preventing deep well explosion Technical Field The invention relates to the technical field of casting production equipment, in particular to a deep well casting system for preventing deep well explosion. Background At present, the deep well casting process of aluminum materials is a process that aluminum raw materials are smelted to form aluminum liquid, and the aluminum liquid enters a deep well casting machine through a runner to be cooled and formed. In the prior art, a deep well casting system generally comprises a smelting furnace, a deep well casting machine and a launder communicated with the smelting furnace and the deep well casting machine, high-temperature aluminum liquid from the smelting furnace flows into the deep well casting machine through the launder for cooling and forming, the smelting furnace widely adopts a tilting smelting furnace, the pouring control of the aluminum liquid is realized through the tilting of a furnace body, and the control of the aluminum liquid flow rate in the launder depends on a launder liquid level monitoring interlocking device. However, in actual operation, the safety measures of the existing deep well casting system still have significant defects, especially in sudden leakage, power failure or extreme environmental conditions, which are prone to serious accidents, and the main disadvantages are as follows: (1) The self-locking property of the explosion-proof valve collides with the emergency return stroke, namely the tilting smelting furnace is often provided with the explosion-proof valve as a safety locking device, but the self-locking function of the explosion-proof valve can prevent quick response in emergency. For example, when the deep well casting machine leaks aluminum, the tilting smelting furnace needs to return to the original position immediately to stop the aluminum liquid from flowing out, but the self-locking mechanism of the explosion-proof valve can cause return delay and can not return to zero quickly. During this period, the aluminum liquid continuously flows into the launder, and if the launder is not sufficient in capacity or the liquid level monitoring fails, the risk of aluminum liquid overflow is aggravated. (2) The reliability of the launder level monitoring interlock is inadequate because the device is prone to failure due to signal lag, sensor failure or control failure. Once the liquid level monitoring abnormality fails to trigger the tilting smelting furnace to stop tilting in time, the molten aluminum outflow is in an out-of-control state, and the existing system lacks a redundant control means and cannot provide secondary protection when the main system fails. (3) The emergency control is lack under the power failure working condition, namely, when sudden power failure happens, a hydraulic system or an electric control system of the tilting smelting furnace can not be reset quickly due to self-locking of the explosion-proof valve. At this time, the tilting smelting furnace cannot return, the deep well casting machine and its accessories (such as a casting crystallizer cooling system) lose power, and the high Wen Lvye may leak to the casting deep well through the casting crystallizer. If water accumulation or a humid environment exists in the casting deep well, the aluminum liquid can cause severe explosion when meeting water. (4) The failure risk of the emergency water source system in the cold environment is that in the cold area, the emergency water source facilities such as a high-level water tank, a pipeline, a valve and the like are easy to freeze at low temperature, so that the emergency water supply cannot be started automatically or manually. On the one hand, the automatic valve can not be opened due to freezing clamping stagnation, and on the other hand, the manual valve is easy to rust after long-term non-use and is difficult to operate in emergency. When high-temperature aluminum water in the casting crystallizer flows into a deep well, if cooling water of the casting crystallizer is interrupted and an emergency water source cannot be timely supplemented, the high-temperature aluminum liquid can leak to the casting well to cause explosion. Disclosure of Invention The invention aims to provide a deep well casting system for preventing deep well explosion, which aims to solve or at least partially solve the defects existing in the prior art, and can not only timely block the communication path between a smelting furnace and a launder to prevent excessive aluminum liquid from flowing into the launder and timely block the communication path between a deep well casting machine and the launder to prevent the aluminum liquid from leaking to a casting deep well, but also automatically reflux the aluminum liquid exceeding a safe liquid level to a middle converter and lead out the aluminum liquid to prevent the excessive aluminum liquid from flowing into the casting deep well of the deep well castin