CN-122012853-A - Bottom plate drainage system of converter gas tank

CN122012853ACN 122012853 ACN122012853 ACN 122012853ACN-122012853-A

Abstract

The invention discloses a converter gas tank bottom plate drainage system which comprises a first water collecting pit arranged below a converter gas tank bottom plate, wherein a base is arranged in the first water collecting pit, a bottom plate drainer is arranged on the base and communicated with the converter gas tank bottom plate through a connecting pipe, a second water collecting pit is arranged at the bottom of the first water collecting pit, a submersible sewage pump and a float switch are arranged in the second water collecting pit, the float switch is electrically connected with the submersible sewage pump, and the float switch is used for controlling the start and stop of the submersible sewage pump according to the water level in the second water collecting pit. The invention automatically discharges accumulated water by arranging the first water collecting pit and the bottom plate drainer and matching the second water collecting pit with deeper depth with the submersible sewage pump controlled by the floating ball switch, effectively avoids soaking corrosion of the bottom plate drainer, prolongs the service life of equipment, and timely finds out abnormality such as blockage, leakage and the like by intensively communicating the bottom plate drainer with the submersible sewage pump through the annular open channel so as to solve the problem of inconvenient investigation of the traditional concealed pipe and facilitate smoother drainage.

Inventors

YAN JIABIN
YAN LIFU
Zuo Shaifeng
LI JIACAI
JIANG JINGXIONG

Assignees

阳春新钢铁有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260204

Claims (10)

1. A converter gas tank bottom plate drainage system is characterized by comprising a first water collecting pit arranged below a converter gas tank bottom plate, wherein a base is arranged in the first water collecting pit, a bottom plate drainer is arranged on the base and communicated with the converter gas tank bottom plate through a connecting pipe, a second water collecting pit is arranged at the bottom of the first water collecting pit, a submersible sewage pump and a float switch are arranged in the second water collecting pit, the float switch is electrically connected with the submersible sewage pump, and the float switch is used for controlling the start and stop of the submersible sewage pump according to the water level in the second water collecting pit.
2. The converter gas tank bottom plate drainage system of claim 1, wherein the float switch is used for controlling the start and stop of the submersible sewage pump according to the water level in the second water collecting pit, and comprises the steps that the float switch triggers the submersible sewage pump to start if the water level of accumulated water in the second water collecting pit rises to a high water level triggering height, and the float switch controls the submersible sewage pump to stop working if the water level in the second water collecting pit falls to a low water level triggering height.
3. The system for draining the bottom plate of the converter gas tank according to claim 2, wherein the high water level triggering height of the float switch is 100-150mm from the top of the second water collection pit, and the low water level triggering height of the float switch is 50-80mm from the bottom of the second water collection pit.
4. The system for draining the bottom plate of the converter gas tank as claimed in claim 1, wherein 4 first water collecting pits are arranged, 4 first water collecting pits are uniformly distributed below the bottom plate of the converter gas tank, and the bottom plate drainer in each first water collecting pit is communicated with the bottom plate of the converter gas tank through a connecting pipe.
5. The system of claim 1, wherein the first pit is less deep than the second pit.
6. The system of claim 1, further comprising an annular open trench, wherein the annular open trench is disposed around the bottom plate of the converter gas tank, an outlet of the annular open trench is communicated with the waste water station, the bottom plate drainer is communicated with the annular open trench through a first drain pipe, and the submersible sewage pump is communicated with the annular open trench through a second drain pipe.
7. The system for draining the bottom plate of the converter gas tank as claimed in claim 6, wherein the annular open trench is covered with a grid plate.
8. The system for draining the bottom plate of the converter gas tank as claimed in claim 7, wherein the grating plate is made of stainless steel.
9. The system for draining the bottom plate of the converter gas tank as claimed in claim 6, wherein the width of the annular open trench is 300-500mm, and the depth of the annular open trench is 400-600mm.
10. The system for draining the bottom plate of the converter gas tank as claimed in claim 6, wherein the inner wall of the annular open trench is treated by cement mortar plastering.

Description

Bottom plate drainage system of converter gas tank Technical Field The invention relates to the technical field of ferrous metallurgical equipment, in particular to a drainage system for a bottom plate of a converter gas tank. Background In the converter gas recovery process of the ferrous metallurgy enterprises, when a wet recovery mode is adopted, a large amount of condensed water can be continuously generated in the operation process of the converter gas cabinet. The condensed water is discharged through a bottom plate drainer and is conveyed to a wastewater station for centralized treatment so as to ensure the normal operation of the converter gas tank. In the prior art, the bottom plate drainer of the converter gas tank is usually installed in a pit body below the ground, and the pit body is easy to store environmental water or condensate water to flow back, so that the bottom plate drainer is soaked in water for a long time. The soaking state can accelerate corrosion and aging of the bottom plate drainer, shorten the service life of the bottom plate drainer, and increase equipment maintenance cost and shutdown overhaul risk. Disclosure of Invention In order to overcome the defects in the prior art, the invention provides a bottom plate drainage system of a converter gas tank, and aims to solve the problem that a bottom plate drainer is easy to corrode and age after being soaked in water for a long time in the prior art. The technical scheme includes that the converter gas tank bottom plate drainage system comprises a first water collecting pit arranged below a converter gas tank bottom plate, a base is arranged in the first water collecting pit, a bottom plate drainer is arranged on the base and communicated with the converter gas tank bottom plate through a connecting pipe, a second water collecting pit is arranged at the bottom of the first water collecting pit, a submersible sewage pump and a float switch are arranged in the second water collecting pit, the float switch is electrically connected with the submersible sewage pump, and the float switch is used for controlling starting and stopping of the submersible sewage pump according to the water level in the second water collecting pit. The bottom of the first water collecting pit is provided with the second water collecting pit, the submersible sewage pump is matched with the submersible sewage pump and is electrically connected with the float switch, the float switch can automatically control the submersible sewage pump to start and stop according to the water level of the second water collecting pit, accumulated water is discharged in time, the dry working environment of the bottom plate drainer is continuously kept, the bottom plate drainer is kept away from the accumulated water at the bottom of the pit, long-term soaking is avoided, corrosion of equipment is effectively delayed, the service life is prolonged, and the condition of accumulated water of the drain pit is not required to be inspected manually frequently through automatic water level control and drainage design, so that the manual maintenance cost is reduced. The invention further improves that the float switch is used for controlling the start and stop of the submersible sewage pump according to the water level in the second water collecting pit, and comprises the steps that the float switch triggers the submersible sewage pump to start if the water level of accumulated water in the second water collecting pit rises to a high water level triggering height, and the float switch controls the submersible sewage pump to stop working if the water level in the second water collecting pit falls to a low water level triggering height. The second water pit is monitored by the floating ball switch to be high in water level, the submersible sewage pump is triggered to be started, accumulated water can be timely discharged, overflow of the water level is avoided, soaking of the bottom plate drainer is avoided, corrosion of equipment is effectively delayed, the submersible sewage pump is controlled to stop by the floating ball switch when the water level is low, invalid idle running of the equipment can be avoided, mechanical abrasion is reduced while energy consumption is saved, the service life of the submersible sewage pump is prolonged, the water level is automatically triggered to be started and stopped, manual on-duty operation is not needed, manual inspection and control cost is reduced, and timely response and stable operation of a drainage system are guaranteed. As a further improvement of the invention, the high water level triggering height of the floating ball switch is 100-150mm from the top of the second water collection pit, and the low water level triggering height of the floating ball switch is 50-80mm from the bottom of the second water collection pit. By setting the high water level triggering height of the floating ball switch to be 100-150mm away from the top of the seco