Gate online monitoring system: the “clairvoyance” of the dam gate

The worrying moment of the old gate worker

“That voice made my spine cold when I heard it! "Master Zhao, the old gate worker of Sanmenxia on the Yellow River, rubbed his frozen red hands and recalled. In the middle of the night of the bitter winter last year, gate 3 suddenly made a strange “creaking” sound. He climbed up the slippery gate pier with a flashlight, his ears pressed tightly to the cold steel for auscultation. The cold wind rolled the ice ballast into the neckline, and the flashlight trembled in the dark-if the gate gets stuck, 100,000 acres of wheat fields downstream will suffer.

Such thrilling moments abound in traditional gate stations：
– Rely on your ears as a sensor: The old master squatted in the computer room in the middle of the night to listen to strange noises
– Trade your life for data: Workers tie ropes around their waists to check in during the flood season
– Afterwards, Ge Liang: Wait until the gate is completely stuck before you know the bearing is damaged

The lesson of a reservoir in the south in 2022 is even more distressing: because the corrosion was not discovered in time, the 10,000-ton gate fell and destroyed the opener. Afterwards, the maintenance worker touched the deformed steel beam and sighed: “I found out half an hour early, and the loss would be one million less!" ”

Wukong installed “cloud monitoring” on the gate

The change started with several sets of sensors that would “snitch”. Walking into the dispatching center of the South-to-North water diversion project, the “medical examination report” of the gate thousands of miles away was beating on the big screen.：

Vibration sensorLike a stethoscope attached to a gate, if the bearing is slightly abnormal, it will “cough” and call the police.；
Strain gaugeLike nerve endings, the steel structure immediately “cries out for pain” if it is overloaded with effort.；
HD cameraAfter 24 hours of transformation, even the rust spots on the steel beam can be seen clearly.

The most amazing thing isSmart bolt——When the gate connector is loose, it automatically sends a positioning message: “The third ‘button’ on the left leg of the gate pier is loose! ”

The monitoring of the Three Gorges locks is even more intelligent. The engineer established a “health file” for the 34 gates, and the system understands the temper of the gates better than the old gate workers.：
> "In July last year, the system prompted that the tension of the wire rope of the No. 2 door machine was abnormal. The overhaul found that the internal wire is broken, and it may break three days later! ”

The three wonders that can be seen

Early detection of risks, save time
The Wangfuzhou Power Station on the Hanjiang River has had a sweet taste: during the flood season last year, the system suddenly warned of a deviation in the opening of the gate on the right bank. The maintenance staff rushed to remove the shield-the gearbox lubricating oil was mixed into the sediment! The stationmaster said fearfully: "If you find out two hours late, the entire gearbox will be scrapped. ”

Save real money
The first economic account of Mushihang Irrigation District, Anhui Province: In the past, the annual manual inspection fee was 280,000, but now I am sitting in the office and clicking the mouse. What is even more surprising is that the failure warning has reduced the maintenance cost by 60%, and the wear-out parts of the bearing will be replaced by 30% less.

The mobile phone has become a new gate room
“Checking the gate now is like looking at the weather forecast! "Xiao Liu, the post-9/11 dispatcher of the Nenjiang Nierji Reservoir, clicked on the mobile app. In the picture, the real-time opening of the gate thousands of miles away and the oil pressure temperature are clear at a glance. She smiled and swiped the screen: “The leader checks the guard in the middle of the night? Take a screenshot and send it over! ”

 Early warning runs faster than failure

The monitoring system of the three river gates of Hongze Lake has become a "prophet”. In August last year, a yellow warning suddenly popped up in the system：
“The hydraulic oil temperature on the left side of door 3 has risen abnormally! ”
When the maintenance team arrived at the scene, the oil temperature was only 2 degrees away from the dangerous value. Disassemble the tubing and find that the gap in the cooler is full of aquatic plants!

Smarter learning ability is growing. After five years of data accumulation, a lock system in the Yangtze River has actually summarized the law.：
–If the temperature exceeds 35℃, the lubrication frequency of the gate track needs to be increased.
–Opening and closing more than 30 times a day, the life of hydraulic oil is shortened by 15%

“It has a better memory than the old master! "The technical person in charge sighed. When the system automatically pushed the "gate physical examination plan”, the old maintenance squad leader gave a thumbs up: “This kid is a teacher! ”

The future has come

The new system of Taihu Gate station is experimenting with "cloud consultation”: Beijing experts view a three-dimensional model of the gate through VR glasses, as if touching each bolt with their own hands. The monitoring station at the Pearl River Estuary played “black technology”-using sound waves to detect cracks in underwater gates, and even the thickness of the oysters was clear.

When the first ray of light from the Yangtze River passed through the gate that automatically sent the operation report, the maintenance vehicle accurately drove to the target gate pier according to the early warning text message. Those figures with frost hanging in the middle of the night for auscultation are gradually entering history. And the new story of the steel giant Gate is being written in the beating data stream-each set of warning signals is an affectionate confession to Jianghe Anlan.