In addition to some of the nuclear components of the Baishou large-scale nuclear power plant, which are mature products of the Federal Republic of Germany, the mainframe computer, including system management software and combined cycle gas turbine units, are the latest domestic products.

As the first large-scale nuclear power plant in China, it is also a big evaluation of the performance and quality of the gas turbine jointly manufactured by Huaying!

RQ79-A gas turbine combined cycle unit, with single-cylinder, single-shaft design, compressor and turbine rotor only two bearings to support, which provides the basic conditions for stable, good alignment and high-quality operation.

In the front bearing housing, a radial thrust combined bearing is installed. The front end is equipped with a speed sensor and hydraulic coil gears, and the bearing assembly is supported on the front bracket by a frame within the compressor intake duct.

The exhaust cylinder consists of a slightly tapered housing with a rear bearing housing. The rotor consists of a number of discs and three hollow shaft segments, each of which is fitted with a primary blade, all of which are connected by a central connecting bolt.

The parts are clamped together using a hydraulic method so that they are not affected by torsional forces. The turbine rotor is internally cooled, and a small amount of compressed air flows out from the 12th and last stages of the compressor and into the rotor through a hole in the central shaft. The cooling air forms a cooling air film over the entire wheel of the rotor, ensuring that all corners of the rotor are surrounded by cooling air.

The two combustion chambers are arranged vertically on either side of the turbine and are connected to the transverse flanges on the cylinders, each with eight independent burners. The generator is used as the starter, and the unit is powered by the starting stationary inverter when it starts, and when it reaches 70% of the rated speed, the starting inverter is withdrawn. The diesel engine is used as a standby starter in the emergency state of the unit.

Combustible with multiple fuels, with dual-fuel and multi-fuel injectors, diffusion a pre-mixed composite injector, to ensure low NOx and CO emissions.

The combustion chamber has a long life, avoiding the possibility of direct flame radiation to the turbine blades and combustion in the turbine when it is rich in oil. It eliminates the burnout of the turbine blades and makes the inlet temperature evenly distributed.

The manhole in the combustion chamber provides the convenience of inspecting the inside of the combustion chamber and the front of the turbine.

Axial exhaust reduces the pressure loss of exhaust gas, and at the same time provides favorable conditions for the configuration of waste heat boilers.

The rotor has two bearings outside the pressure zone. It is not affected by pressure and temperature, which ensures the stability of the operation of the unit.

The rotor is light, the thermal time constant is small, and the cylinder is a double-layer structure. Reduced temperature gradients create conditions for fast start-up. The basic load can be reached in less than 4.5 minutes with an emergency start.

The reassembly of the rotor after the overhaul eliminates the need for dynamic balancing, which greatly reduces the maintenance time. The availability of the unit has been improved.

On the basis of long-term experience in the operation of various V-shaped units, the turbine cylinder has been greatly improved, and heat-resistant materials and thermal insulation measures are adopted to ensure high efficiency and working reliability.

RQ79-A gas turbine has a maximum output of 167MW, an efficiency of 35.2% and a compression ratio of 14.5. The turbine inlet temperature is 1247 degrees, and the combined cycle efficiency is 52.5%.

Rolls-Royce of the United Kingdom obviously attaches great importance to investment in China, and does not hide in terms of gas turbine technology, this RQ79-A jointly developed by China and Britain is more than the latest V94-2 gas turbine launched by Siemens in Germany. It's a little bit better in every way.

There are currently 12 RQ79-A gas turbines installed and commissioned in Singapore, India, Malaysia and Pakistan. The export prospects and benefits are considerable.

After visiting the main control room, Gao Tongsheng and Gelephorn led Director Yang and his party to the generator set room.

Here, several engineers from China and Germany are debugging an RQ79-A gas turbine.

Similar to the commissioning of conventional coal-fired power stations, the commissioning of gas turbines can still be divided into three parts: single commissioning, sub-system commissioning and whole group start-up commissioning.

Huaying United Gas Turbine Manufacturing Co., Ltd. has strict and systematic standardized standards for gas turbine commissioning projects, related quality inspection and evaluation standards. Therefore, in the process of monomer modulation, the scale and inspection standards for implementation only need to be operated according to the standard specifications.

The sub-system commissioning projects mainly include: closed cooling water system, intake and exhaust system, fuel pre-system, anti-spuff and deflation system, lubrication and top shaft oil system, fuel injection system, control hydraulic oil system, turbine and compressor cleaning system, ignition system, IGV system, I&C (TXP) system and industrial cooling water system.

For each system, the auxiliary machine (pump) unit trial operation, pipeline flushing and purging, various doors (adjustment door, electric door, pneumatic door and safety door) action inspection and tuning, accumulator charging to the rated value, thermal interlock protection inspection, system operation and dynamic adjustment, etc.

Yang Weiping silently watched the standardized work of the engineers carefully, and occasionally nodded his head with satisfaction.

Although this RQ79-A still has obvious British origin, Yang Weiping believes that in the next Daya Bay nuclear power plant, it will definitely be able to use more advanced high-power gas turbine combined cycle units with all independent intellectual property rights of Shanghuaxia.

After adopting new aviation materials, RQ79-A has been developed and industrialized on the basis of Rolls-Royce's WR-21 and GM LM2500 gas turbines.

Cottage, sometimes it's also a skill!

Besides, in terms of combustion chamber and turbine blade technology, it has also received strong support from Chang'an Aero Engine Research Center.

The whole group of start-up and debugging cannot be carried out yet, but seeing the brand-new RQ79-A gas turbine in front of him, Yang Weiping is basically sure that there will be no problems with the whole group of debugging.

For the light pressurized water reactor below the third layer of the nuclear island, Yang Weiping does not plan to go for close contact. Although there are radiation and chemical protection suits, they are still too dangerous.

Lives matter!

All work at the Baishou large-scale nuclear power plant is proceeding as planned, and some projects are even ahead of schedule. After inspecting it with his own eyes, Yang Weiping had nothing to worry about.

After leaving Baishou Town, Yang Weiping went to the Chongqing Municipal Party Committee and held a conference call with the top and second leaders of the western provinces and autonomous regions. He emphatically emphasized the importance of a stable and harmonious public order environment and investment environment to ensure the smooth progress of the large-scale development of the western region.

At the same time, he also repeatedly stressed that the large-scale development of the western region must not be built at the expense of environmental resources and that building a harmonious society of the two types, which is environment-friendly and resource-saving, is the highest guiding principle for the large-scale development of the western region.

In the large-scale development of the western region, the evaluation of cadres' political achievements is not based on the theory of earning foreign exchange or GDP, but is a comprehensive evaluation that combines the environment, resources, efficiency, effectiveness, and the satisfaction of the masses.

Putting an end to redundant construction and strictly prohibiting face-saving and image-building projects is one of the important bases for evaluating the performance of the party and government leading bodies of various localities, cities, districts, counties, townships, and towns in the western region.

Before the end of the meeting, Yang Weiping put forward an action directive for severely cracking down on public security and criminal offenses in the western region, and in conjunction with the people's deputies' jury mechanism, we should crack down on all criminals in a severe, speedy, and strict manner, regardless of nationality or region, with facts as the criterion and law as the basis.

In the west, there is no distinction between Han and ethnic minorities, and they are all called citizens of the Republic!

Moreover, it is necessary to take advantage of the opportunity of this "strike hard" campaign to conduct a comprehensive population census in the western region and issue a brand-new identity card of the Chinese People's Republic of China.

arranged all the work that should be arranged, and explained to Jiang Tiegang, if there is nothing particularly important and no longer bother him, he should take it easy and enjoy this rare long vacation with peace of mind.

Three days later, the Sky No. 1 plane landed at Hong Kong's Kai Tak International Airport.

After more than two years after leaving Hong Kong, the rapid development and changes in Hong Kong did not surprise Yang Weiping.

Establishing the development of Hong Kong's high-tech pillar industries in the Tiangong Guantang High-tech Industrial Park, and building a new world-class university town, it would be too unscientific for Hong Kong to be the same as when he left.

In the special passage of the airport, a dark green bulletproof four-door Range Rover off-road vehicle, under the escort of two black Mercedes-Benz E3 business sedans with the license plates of the Hong Kong G4 protection VIP group, drove out of the airport quickly and drove directly to the urban area of Hong Kong Island at high speed.

Sir Yang's special plane has long been recorded by the aviation administration department in Hong Kong.

Before Tiangong-1 took off from the dedicated airport of the Tucheng Aircraft Factory, it had already made contact with Hong Kong's air traffic control department by radio.

After confirming the route and arrival time of Sir Yang Da's special plane, the relevant responsible personnel of Kai Tak Airport immediately reported to the Hong Kong Governor's Office.

After Tiangong No. 1 landed, there were G4 people waiting at the airport for a long time, and the leader was also related to Sir Yang Da who had a relationship with Tiangong Smelter in Hong Kong, Zhang Chunrui, the leader of G4.

In the black Mercedes-Benz E3 luxury business sedan, Zhang Chunrui, who was sitting in the passenger seat, looked at the rearview mirror outside the window from time to time to determine whether the dark green four-door Range Rover off-road vehicle that had never been seen on the market was keeping a safe distance.

"ZHANG SIR, WHAT KIND OF BIG MAN ARE WE PICKING UP TODAY?" THE TWENTY-SEVEN OR EIGHTEEN-YEAR-OLD PLAINCLOTHES MAN WHO DROVE THE CAR ASKED A LITTLE GOSSIPY: "DRIVING A SPECIAL PLANE AND BRINGING MY OWN VEHICLE, I CAN BE REGARDED AS EYE-OPENING THIS TIME." ”

"Zhilu Dao is a big man, where do you get so much nonsense, drive seriously!" Zhang Chunrui turned his face and glared at the subordinate angrily, "If this is an ordinary person, can you let me go out in person?" (To be continued.) )

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