The Three Gorges Ship Lock turns into a five-level operation

The Three Gorges Ship Lock turns into a five-level operation At 10:00 on September 10th, with the opening of the south gate, five cargo ships waiting for the “Yangyang 5” and “Yichang Jinhang 3” at the entrance of the gate entered the gate of the Three Gorges South Line in a drizzle. room. At 0:00 the same day, the 175-meter experimental water storage of the Three Gorges Dam began in 2013. The ship locks on the Yangtze River and the Three Gorges Project also began to move into Class 5 operation at 22:00 on September 8. The time for the vessel to pass through the gate was extended by 40 minutes compared with the Class IV operation.

As of 8:00 on September 10, the water level in the Three Gorges reservoir area has risen to about 157.12 meters. According to the operational specifications of the Three Gorges ship lock, the Three Gorges Navigation Authority issued a timely notification of the progression of operations from four to five, and communicated to the ship through various means. Due to the fact that the ship has to go through more than one level of lock chambers, the time to pass the gate is extended by 40 minutes when compared to the fourth grade. The Three Gorges Navigation Administration stated that it will promptly make predictions and notifications for navigational information such as water conditions, and timely adjust the mooring lines to ensure that the river sections in the dam area are navigable, the ship locks are operating normally, and navigation safety is guaranteed during impoundment. .

In order to ensure the safe operation of the ship locks and the safety of ships passing the gates, according to the relevant research results of the “Key Technologies for Control of Draught of Three Gorges Ship Locks at Ship Lock Gates”, the maximum draught of the ships allowed at gates of the Three Gorges ship locks has been controlled at 4.0 meters, slightly lower than that at the time of the fourth class operation. 0.2 meters. However, as the water level rises further, the maximum allowable draught of ships allowed at the gate is expected to increase after the ship locks are switched to five levels without water supply.

It is reported that after the replacement of the Three Gorges ship lock, the five-level operation will continue until next May.

Advanced Plastics (160-220℃)


Advanced Plastic is a polymer material which has a higher comprehensive performance and can be use in long-term temperature above 150 ℃.It is mainly used in the field of high technology .So we also call it as the high performance engineering plastics or heat resistant engineering plastics.

This kind of material has excellent characteristics of light weight, high strength , good heat resistance and others and its application is from the original national defense and aerospace to the field of car, equipment, high-end consumer goods and many civilian areas.

There are many kinds of Advanced Plastic produced by Dongguan Noegem Plastic Product Co.,Ltd .

1. Production:

Polyphenylene sulfide plastic sheet (PPS plastic sheet),

Brief introduction:

PPS plastic which also called Polyphenylene sulfide.On the primary key is extremely dense and sulfur atoms of benzene ring, thermoplastic resin is high rigidity, high crystallinity, have higher strength and modulus, products can be used in the 200 ~ 224 ℃, 250 ℃ under the main performance.

2. Production:

Polyether imide plastic sheet (PEI plastic sheet),

Antistatic polyether imide plastic sheet (ESD PEI plastic sheet),

Conductive polyether imide plastic sheet (CON PEI plastic sheet),

Polyether imide plastic rod (PEI plastic rod),

Antistatic polyether imide plastic rod(ESD PEI plastic rod),

Conductive polyether imide plastic rod (CON PEI plastic rod),

Brief introduction:

PEI plastic is characterized by high intensity, high rigidity, abrasion resistance and dimension stability.PEI plastic is a transparent solid of amber, which has inherent flame retardancy and low smoke intensity without adding any additives. The oxygen index is 47% and the combustion level is ul94-v-0.

PEI plastic is 1.28 ~ 1.42 g/cm3 density, glass transition temperature is 215 ℃, thermal deformation temperature of 198 ~ 208 ℃, can use for a long time under 160 ~ 180 ℃, allows intermittent maximum temperature of 200 ℃

PEI plastic has excellent mechanical strength, electric insulation, radiation resistance, high and low temperature resistance and fatigue resistance and molding processability;The addition of Glass Fiber, carbon fiber or other filler can enhance the modification purpose.

3. Production:

Polyether ether ketone plastic sheet (PEEK plastic sheet),

Antistatic polyether ether ketone plastic sheet (ESD PEEK plastic sheet),

Conductive polyether ether ketone plastic sheet (CON PEEK plastic sheet),

Polyether ether ketone plastic rod(PEEK plastic rod),

Antistatic polyether ether ketone plastic rod(ESD PEEK plastic rod),

Conductive polyether ether ketone plastic rod (CON PEEK plastic rod),

Brief introduction:

Polyetheretherketone (PEEK) plastic is a kind of excellent performance of special engineering plastics, has more significant advantages compared with other special engineering plastics..Can be used for high-end technology such as mechanical, nuclear engineering and aviation.

Advantage :

1)Excellent chemical resistance and hydrolysis resistance

2)Excellent physical and mechanical properties

3)Resistance to high temperature is 260 degrees,

4) light and good dimensional stability

5 )excellent flame retardancy

6)Good electrical insulation and electrical stability

7 )it can be mixed, easy to process composite

8)Good self-lubrication

4. Production:

polyphenyl ether plastic sheet(PPO plastic sheet ).

Brief introduction

PPO plastic is a special kind of engineering plastic, which has many features that other engineering plastics do not have:

1. Transparency: PPO plastic is one of the few transparent plastics;

2. Non-toxic: PPO plastic itself is less toxic and more suitable for food and medical applications;

3. Low temperature resistance: the low temperature of the PPO in the low temperature of minus 170 degrees centigrade, which is a lot of engineering plastic;

4. Low gravity: 1.08 g/cubic cm is slightly more dense than water;

Main features of Advanced Plastic

Heat temperature of 150 ~ 300 ℃

Advantages :

1).Good in heat resistance,

2).Good chemical resistance and radiation performance,

3).Good flame retardancy

4).Good stiffness, strength, toughness, creep, abrasion and other comprehensive mechanical properties.


Application: space aviation, defense military industry, nuclear power, electronics, transportation, machinery manufacturing, medical devices and other civil fields.


Advanced Plastic,Advanced Technology Plastic,Excellent Quality Advanced Plastic

Dongguan Noegem Plastic Products Co.,Ltd , https://www.noegempLastic.com