Chapter 1497

Because of this, the Navy pays more attention to the bidding and construction of the second phase of the west to east gas transmission project than other units.

However, their focus is not on the 20 MW gas turbine taking off in China, but on the improved da-80 gas turbine of Aviation Development Corporation.

This is not to say that the Navy does not pay attention to China's take-off products.

In fact, since the beginning of the new century, with the deepening of military reform, the procurement of military equipment has changed greatly from the mandatory and task oriented rigid procurement in the 1980s and 1990s.

It integrates the advanced practices of many western developed countries, such as investment like betting on both sides.

For example, the Naval Armament Department invested in China Tengfei and Aviation Development Corporation at the same time.

Therefore, no matter which enterprise obtains the results, the navy has the priority to purchase.

The rest is to see which enterprise can take out the products required by the Navy first.

Obviously, this is a competitive procurement model, which can not only improve efficiency, but also immeasurably promote innovation.

Therefore, in some areas with strong selectivity, the army is implementing this procurement policy.

Back to the marine gas turbine.

Obviously, the Aviation Development Corporation has come to the front. As early as 2002, with the technical support of the Russian Aviation Power Corporation, they imitated the da-80 gas turbine. Although it did not perform very well in the first phase of the west to east gas transmission project, as the only 20 MW high-power gas turbine that can be put into use in China, da-80 still received high attention and praise, It can be described as buff.

Over the past few years, the Aviation Development Corporation has not only received the support of Ge, but also the Russian Aviation Power Corporation. It not only sent the experts of the Ukrainian branch to the Aviation Development Corporation as consultants, but even came to an end in person to help the Aviation Development Corporation solve the supporting problems of relevant parts.

Russian Aviation Power Corporation is called what it is for the friendship of comrades and brothers.

In fact, the Russian Aviation Power Corporation is retreating and preparing to hide itself behind the scenes and lie down to make money by eating the supporting of patents and key spare parts.

Therefore, in recent years, the Aviation Development Corporation has worked hard on the da-80, especially the da-80t high-power gas turbine recently launched, with a maximum power of 25 MW, equivalent to 33525 horsepower.

Compared with the previous da-80, the power of da-80t is increased by 15%, the fuel consumption is reduced by 20%, and the maintainability and service life are enhanced.

Not only can it be used in a series of civil fields such as energy pipeline transportation, power generation and petrochemical industry; Its two parallel driven 8000 ton missile destroyers have a super output of more than 30 knots, which is also a good choice for marine gas turbines.

In itself, it is a gas turbine project prepared to equip the next generation of capital ships in the Soviet era. Coupled with the open supply chain of Russia and Ukraine and the commendable efforts of the Aviation Development Corporation, the da-80t gas turbine has naturally received high attention from the Navy.

As long as we can achieve good performance in the second phase of the west to east gas transmission project, the large-scale procurement of the navy is basically a high probability event of nailing on the board.

Because of this, the Aviation Development Corporation, which knows the key of this bidding, should pay more attention than China's take-off from top to bottom. It should not only win more than 50 shares below 10 MW, but also expect to win about 30% of the contract for 20 MW high-power gas turbine.

Why is it expectation, not striving for it.

The reason is not simple. Just before the bidding document was issued for the second phase of West to east gas transmission project, the Aviation Development Corporation and Ge had met and discussed.

For the 20 MW high-power gas turbine, the Aviation Development Corporation takes 30%; Ge takes 50%; The remaining 20% is reserved for Siemens and Mitsubishi to show the openness and internationalization of the whole project.

As for China's take-off... Do they have 20 MW gas turbines?

You should know that China's take-off is an independent and innovative technical route of aviation to fuel conversion. It is independent and adheres to pure localization. They just obtained a relatively mature industrial gas turbine below 10MW ten years ago.

In just ten years, how can it jump to the level of 20 megawatts?

You should know that the development cycle of gas turbine is at least 15 years. Even if China takes off without eating or drinking, it will not be able to complete this level of development in 10 years.

Because of this, neither Aviation Development Corporation nor Ge regards China's take-off as an opponent at the level of 20 MW.

This can be seen from the bidding document of the second phase of the west to east gas transmission project. The bidding document for China's take-off is only the gas turbine of less than 10 MW, and there is no description of more than 20 MW.

As for the Navy, let alone the frequent inspection and research to the da-80t gas turbine production line of China Aviation Development Corporation, it is a silent attitude to China Tengfei Aviation Power Co., Ltd. (Group).

Of course, with the ambition of the Aviation Development Corporation, it actually wants to win 50% of the share at the level of 20 MW. However, the opponent is ge. It not only holds the technology and key supporting facilities of the gas turbine below 10 MW of the Aviation Development Corporation, but the key is that the products produced by GE are so strong that there are no friends.

The shortlisted ge-2800 gas turbine adopts a new technology called intercooling regenerative cycle, that is, a set of intercooling regenerative cycle device is added on the basis of the traditional single cycle gas turbine, so that the high heat air flow generated by the gas turbine is recycled and the internal device is driven to do secondary work, so as to improve the overall thermal efficiency of ge-2800 gas turbine.

According to Ge, the comprehensive thermal efficiency of ge-2800 gas turbine is as high as 36%, which is a very high level in the world.

You should know that the thermal efficiency of the lm2500 early model equipped on the 052 missile destroyer is only 30%; The thermal efficiency of the da-80t upgraded by the Aviation Development Corporation gradually reached 33%.

It can be said that the comprehensive thermal efficiency of ge-2800 gas turbine can reach 36%, which is unattainable.

However, this is not the only advantage of ge-2800 gas turbine. Its most commendable place is fuel consumption, and the unit fuel consumption rate is only 227kg · kwh.

You should know that the fuel consumption of a medium speed diesel engine with tens of thousands of horsepower is only 210 kg / kWh. The ge-2800 gas turbine can achieve 227 kg / kWh, which is very close to the fuel consumption of a diesel engine. It is not a star and a half with good economy.

Coupled with its excellent maintainability.

In terms of fuel consumption, we only managed to achieve the da-80t of 240 kg · kwh with great efforts. Obviously, there is still a long way to go.

If someone holds the egg, the technical indicators of the product are still so pulled. Even if the Aviation Development Corporation wants to focus on the lower middle line, it will be beaten by others. After all, the ge-2800 gas turbine is lighter, more competitive and stronger!

If you can get 30% of the share by private partition, it is appropriate to pick up the stool. What else is the dissatisfaction of the Aviation Development Corporation?