CN-121976995-A - Monitoring system and fault diagnosis method for lifting hydraulic cylinder of tundish car of continuous casting machine

CN121976995ACN 121976995 ACN121976995 ACN 121976995ACN-121976995-A

Abstract

The invention relates to a monitoring system and a fault diagnosis method for a lifting hydraulic cylinder of a tundish car of a continuous casting machine, belonging to the technical field of intelligent operation and maintenance of metallurgical continuous casting equipment, comprising a first detection template, a first detection module and a second detection module, wherein the first detection template is connected with a position sensor of an A position of the lifting hydraulic cylinder and is used for acquiring a first sensor signal; the second detection template is connected with a position sensor of the position of the lifting hydraulic cylinder B and used for collecting second sensor signals, the third detection template is connected with a position sensor of the position of the lifting hydraulic cylinder C and used for collecting third sensor signals, the position sensor of the position of the lifting hydraulic cylinder D is directly connected with an upper computer, and an alarm is given out when any sensor signal is not in a set range. The invention changes the original multi-sensor parallel detection mode into 'single sensor-single template' independent connection, thoroughly eliminates signal crosstalk, realizes accurate monitoring and timely alarming of the positions of four lifting hydraulic cylinders, and ensures the operation safety of a tundish car of the continuous casting machine.

Inventors

SHANG ZHIYU
YAO LIJUN
CAI XUEHUI
HUA GUOLONG
LIU JUNFENG
YUAN LICHENG
SUN LIANGQIAN

Assignees

包头钢铁（集团）有限责任公司

Dates

Publication Date: 20260505
Application Date: 20260324

Claims (7)

1. The utility model provides a continuous casting machine tundish car lift pneumatic cylinder monitoring system which characterized in that includes: The first detection template is connected with a magnetostrictive position sensor at the position A of the lifting hydraulic cylinder and is used for collecting a first sensor signal, and when the first sensor signal is not in a set range, an alarm lamp on the first detection template is lightened; The second detection template is connected with a magnetostrictive position sensor at the position B of the lifting hydraulic cylinder and is used for collecting second sensor signals, and when the second sensor signals are not in a set range, an alarm lamp on the second detection template is lightened; The third detection template is connected with a magnetostrictive position sensor at the C position of the lifting hydraulic cylinder and is used for collecting a third sensor signal, and when the third sensor signal is not in a set range, an alarm lamp on the third detection template is lightened; and the magnetostrictive position sensor at the D position of the lifting hydraulic cylinder is directly connected with the upper computer, and when the signal of the fourth sensor is not in the set range, an alarm is sent.
2. The tundish car lifting hydraulic cylinder monitoring system of claim 1, wherein the spacing between each of the inspection templates is greater than 150 mm.
3. The continuous casting machine tundish car lifting hydraulic cylinder monitoring system according to claim 1, wherein the model of the detection template is SICK GM700.
4. The monitoring system for the lifting hydraulic cylinder of the tundish car of the continuous casting machine according to claim 1, wherein the base layer of the detection template is a ceramic substrate, the middle layer is provided with a heat dissipation channel with a grooved copper foil, the surface layer is coated with a nano aluminum oxide coating, and heat dissipation fins are arranged.
5. The continuous casting machine tundish car lifting hydraulic cylinder monitoring system as recited in claim 4, wherein the cooling fins are inclined at an angle of 32 degrees.
6. The continuous casting machine tundish car lifting hydraulic cylinder monitoring system according to claim 5, wherein the bottom surface of the ceramic substrate is provided with a diversion trench.
7. A fault diagnosis method, characterized by comprising: The method comprises the steps of collecting four paths of sensor signals, wherein the four paths of sensor signals comprise a first sensor signal, a second sensor signal, a third sensor signal and a fourth sensor signal; When any path of sensor signals are not in the set range, the magnetostrictive position sensor at the corresponding position is abnormal, and an alarm is sent; The impedance value of the abnormal sensor is measured through the external detection terminal, when the impedance is 0 ohm, the alarm gives out continuous buzzing to indicate short circuit, when the impedance is infinity, the alarm gives out intermittent buzzing to indicate open circuit, and when the impedance is 500-1200 ohm, a fault code 'E03' is output.

Description

Monitoring system and fault diagnosis method for lifting hydraulic cylinder of tundish car of continuous casting machine Technical Field The invention relates to the technical field of intelligent operation and maintenance of metallurgical continuous casting equipment, in particular to a monitoring system and a fault diagnosis method for a lifting hydraulic cylinder of a tundish car of a continuous casting machine. Background In the continuous casting production of wide and thick plates, a tundish car (called a tundish car for short) needs to accurately adjust the position through 4 lifting hydraulic cylinders. Each hydraulic cylinder is internally provided with a magnetostrictive position sensor, and the displacement of the piston is fed back in real time. But has the following technical drawbacks: 1. when oxygen burning operation is carried out above the tundish car, the temperature of the splashed steel slag exceeds 800 ℃, so that the cable of the sensor is fused and damaged, and the inner magnetic ring is demagnetized. 2. The diagnosis is difficult, 3 sensors are connected into the same detection template in the original design, and specific fault points cannot be positioned when the template alarms. 3. The maintenance cost is high, and the hydraulic pipeline is required to be disassembled for point-by-point investigation in single accident treatment, which takes more than 4.5 hours. Disclosure of Invention In order to solve the problems, the embodiment of the invention aims to provide a monitoring system and a fault diagnosis method for a lifting hydraulic cylinder of a tundish car of a continuous casting machine. A continuous caster tundish car lifting hydraulic cylinder monitoring system, comprising: The first detection template is connected with a magnetostrictive position sensor at the position A of the lifting hydraulic cylinder and is used for collecting a first sensor signal, and when the first sensor signal is not in a set range, an alarm lamp on the first detection template is lightened; The second detection template is connected with a magnetostrictive position sensor at the position B of the lifting hydraulic cylinder and is used for collecting second sensor signals, and when the second sensor signals are not in a set range, an alarm lamp on the second detection template is lightened; The third detection template is connected with a magnetostrictive position sensor at the C position of the lifting hydraulic cylinder and is used for collecting a third sensor signal, and when the third sensor signal is not in a set range, an alarm lamp on the third detection template is lightened; and the magnetostrictive position sensor at the D position of the lifting hydraulic cylinder is directly connected with the upper computer, and when the signal of the fourth sensor is not in the set range, an alarm is sent. Preferably, the individual detection templates are spaced more than 150 mm apart. Preferably, the model of the detection template is SICK GM700. Preferably, the base layer of the detection template is a ceramic substrate, the middle layer is provided with a grooved copper foil heat dissipation channel, the surface layer is coated with a nano aluminum oxide coating, and heat dissipation fins are arranged. Preferably, the heat sink fins are inclined at 32 degrees. Preferably, the bottom surface of the ceramic substrate is provided with a diversion trench. The invention also provides a fault diagnosis method, which comprises the following steps: The method comprises the steps of collecting four paths of sensor signals, wherein the four paths of sensor signals comprise a first sensor signal, a second sensor signal, a third sensor signal and a fourth sensor signal; When any path of sensor signals are not in the set range, the magnetostrictive position sensor at the corresponding position is abnormal, and an alarm is sent; The impedance value of the abnormal sensor is measured through the external detection terminal, when the impedance is 0 ohm, the alarm gives out continuous buzzing to indicate short circuit, when the impedance is infinity, the alarm gives out intermittent buzzing to indicate open circuit, and when the impedance is 500-1200 ohm, a fault code 'E03' is output. According to the specific embodiment provided by the invention, the invention discloses the following technical effects: Compared with the prior art, the invention changes the original multi-sensor parallel detection mode into 'single sensor-single template' independent connection, thoroughly eliminates signal crosstalk, realizes accurate monitoring and timely alarming of the positions of four lifting hydraulic cylinders, and ensures the operation safety of the continuous casting tundish car. In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below. Drawings In order to more clearly illustrate the embodiment