The "Yun'an Integrated Boat Series Report": 14 months built the "heavy weapon of the country"

"The first, the most advanced, intelligent ..." Before the launch of the pipeline transportation and installation ship, no one in the world could be transported independently and installed 80,000 tons of construction tube construction equipment. The Yun'an integrated ship "One Hangjin 1" has creatively integrated the functions that originally needed a dozen ships to cooperate in order to achieve it.

160 segments, 11,000 tons of steel, 345 kilometers of cable, more than 40 kilometers of welded seams, 600,000 people, this world's top giant, in the plan demonstration and details of the schemes and details, realized the leap from scratch. Essence Recently, the reporter learned from the Second Engineering Co., Ltd. of China Jiaotong 1 Air Bureau in Youth Central Enterprise.

Exploration from blueprint to practice

Shen Guanyun's integrated ship is a little wider than the aircraft carrier. Previously, there was no similar experience in construction at home and abroad, and everything started. From the initial imagination of the construction plan, it is necessary to experience multiple links such as conceptual design, solution design, and detailed design.

The concept design clarifies the requirements of ship hosts such as ship hosting power and side power. As the world's first two -way eight -lane underwater sink tunnel, the section width of the deep and middle channel sinking tunnel is 46 to 55 meters. "This is the origin of the 75 -meter width of the all -in -one ship." Qiu Weiqi, the minister of the original ship equipment department of the second company, recalled.

After the conceptual design is determined, the early team of the One Airlines Bureau joined for many top -level institutions to set off from serving construction needs, refining the design of auxiliary towers, optimizing the DP automatic operating system, and reducing the difficulty of operation. "Four or five hundred copies of drawings, we connect with the design unit one by one to confirm the power and the configuration of the power and construction equipment, the power, quantity, promotion and shape size of the main side, which reflects advanced, feasible, applicable to applicability . "Ma Zongtian, the leader of the second company supervision team.

"One Hangjin 1" integrates the functions of sinking tube floating, positioning, sinking, and installation. "This means that this ship has more construction equipment. Machines, emergency generators, etc., 2 hosts, 2 main generators, 4 shafts engines, 32 anchor twisted and 2 cranes, etc., must be configured in a limited space scientifically and reasonably. "Pay Introduction to the courtyard. During the period, the team organized a large number of modeling, demonstrations, etc., refined the design again and again, and finally formed specific construction drawings.

"For example, just like organizing papers and defense. First of all, you must formulate questions based on actual needs, then list outlines, find arguments, and then do experiments, manuscripts, and arguments. Finally The a metaphor of the Gongyan Court is a model test from April to August 2017 alone, and a dozen special reports have been formed to provide reference data for the design work.

"Most of this ship's ship equipment is arranged symmetrically on the left and right sides. While satisfying the power performance of the ship, the equipment and tube system can be arranged in a limited cabin. In the end, the demand for 26,000 horsepower of the entire ship was selected, and it is the smallest mainframe currently produced in China. Through the continuous simulation and optimization of equipment, tube systems, etc., the "heart" of the ship was successfully placed at 9.1 meters smoothly In the film. "Huang Tao, general manager of the Shipping Office of the One Airlines Bureau.

"The research and development of all -in -one ships has successfully solved the safety risk of long -distance pipeline floating transport under the condition of deep and medium -sized narrow channels and channels. Engineer Liu Dejin explained. The shipbuilding "correction war" was fully launched.

14 years of "grab" 2 years of work

On May 29, 2018, Sun Liang, deputy leader of Ma Zongtian and the supervisory team, and Wang Lijiang, the head of electrical, took the lead in the site of the ship.

The cabin space is narrow, but the number of equipment and tube systems is thousands. The positioning and installations of various equipment and tube systems can only be "do the dojo in the snail shell." Among them, the most difficult is the positioning of the main promotion of the axis system.

The shaft system is the core of the power output of the ship. If the axis system is not right, the power of the entire ship will not meet the design requirements, and it will even cause vibration due to the axial heart deviation from the axis, which will bring an inestimable accident. However, it is necessary to insert a shaft system with a length of more than 20 meters and insert a shaft with a diameter of 4.8 meters in a shaft tube. The entire axis system positioning error must be controlled within 4 mm of the positive or negative.

"The welding quality is directly related to the installation accuracy. It must be strictly controlled by the direction, order and temperature. A little different will cause deformation to be super poor. Many people need to welded at the same time in the same case to ensure one molding at the same time." Sun Liang introduced. Although the all -in -one ship is large, the sheet structure is small, divided into many partitions, and the smallest space is less than 2 square meters. When the two welders operate at the same time, in order to control the deformation, the welding speed is 10 times slower than the normal, and the melting temperature of the electrode is more than 2,000 degrees. No matter how high the temperature is, the welders must be fully armed.

On the day of installation, the temperature is as high as 40 degrees. Since the end of the axis has been connected to the host, the installation work must be completed on the same day. From 1 pm to 4 am, the team entered the "cycle" of measurement, positioning, deviation, and re -positioning. "One millimeter of deviations cannot be available. As long as the data is wrong, re -determine the plan, and then locate and measure it." Sun Liang categorically cut off the iron. After 16 hours, 40 or fifty adjustments were finally installed.

In the early days of construction, the supervision team actively coordinated the leadership of the shipyard and formulated measures to urge steel to enter the market on schedule. "Shipyard processing capacity is fixed, and various ship components have fixed arrangements. In order to rush back the time, we revise the production plan according to the construction progress and stare at the scene every day to ensure the progress of the progress. Organize a progress coordination meeting at the shipyard every week to coordinate all resources that can be coordinated, do everything possible to promote the construction progress, and resolutely prevent the shipping period from delaying the construction period. "Said Bi Rongjun, the leader of the supervision team. Three months later, the pre -delayed construction period finally rushed back.

Let the construction standard "high" on the specification

According to common sense, it takes at least two years to build such a high -tech ship, but the construction cycle of the integrated ship is only 14 months. "Even so, we always have strict requirements in the construction accuracy, and we will never give way to the construction period." Don't look at Sun Liang's in his early thirties, but in the eyes of thousands of workers at the scene, we are famous "black bags."

Reporting is an important process for the quality assurance of all -in -one ships. At the construction site, there was a saying: "As long as you have the conditions for reporting, no matter how many o'clock in the morning, a phone call is absolutely in place."

The construction of all -in -one ships divided more than 160 hull segments, and each section has many points. Each process must be reported. "Boats, machines, electricity, etc. are tens of thousands of large and small reports, and they need to be dozens of times or even hundreds of times a day at the peak period of grabbing work. Sun Liang said.

In the eyes of workers, this kind of "rigorous" is "drilling horns", "will not change" and "not merciless." In the segmentation of the side push -side push compartment, it is the "cone -shaped" structure. Each cabin is very small. People can only enter their heads and one arm. He returned 7 times. "As long as the hands can be seen and the eyes can be seen, they must be executed at high standards." Sun Liang said.

The main hull of the integrated ship is designed with a bilateral ship, and the outdoor operation area is large, and the light deck is equivalent to the size of the two football fields. In this way, the wire lines that need to be laid are long and crossed. Only the side push system requires more than 80 cables with a diameter of 54 mm, which depends on manpower. At the same time, in order to do a good job of fire prevention, install 3,400 alarm points and debug them one by one. Under high temperature, high humidity, and high salt weather, sweat is soaked.

"You see that the welding angle here is too small, there are disconnected welding here, there are sandy eyes here that you can't polish ..." The worker thinks that this is "finding the fault", and the construction specifications are not so high. Besides Sun Liang was consumed at the scene. Don't think about the level if you don't qualify. Because of his "harsh", three batches of workers at the scene were finally passed.

The key to whether the all -in -one ship can float safely and effectively depends on the installation accuracy of the eight pier configuration at the bottom of the beam. "The vertical installation deviation of the No. 2 branch is too large, and it is impossible to guarantee that the safety of the sinking tube must be returned." Ma Zongtian's face was serious. The monitoring team and the shipyard repeatedly discussed, repeatedly demonstrated the calculation, and finally re -determined the repair plan. After reporting, all accuracy errors meet the design requirements.

"Old Horse" Ma Zongtian, "Black Face Bao Gong" Sun Liang, "Electrical Master" Wang Lijiang, "Almighty Old Rail" Guo Jun, "the strongest driver" Sun Zhongjun, "Dose multi -faceted hand" Wang Hanyong ... Thousands of steps and at least dozens of times to check the supervision team, and finally won the time.

On September 28, 2019, the supervision team "grabbed" the workload for two years. So far, this major country's heavy weapon has gone to the ocean, and has successfully accurately put the 18th section of the tube to the bottom of the sea, creating a construction miracle of dripping. (Reporter on this website)

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