2011 newest water flood gate

1. small investment. 2. safe and reliable. 3. convenient maintenance and repair. 4. wide application scope

I. Current introduction of river damming construction both home and abroad

 River damming construction is an important part of river construction system. The forms of damming construction are mainly water dams and water gate. In small and medium rivers, the mostly applied are water gate and water dam. But with the rapid development of small hydropower stations in our country and the ever increasing of city river renovation projects, the application scope of rubber dam is expanding. And with that, many problems have emerged, such as the impact and abrasion of floaters to rubber dam during flood season, and the application limit in mountainous rivers where there is more sand and floaters. The development of small hydropower stations now has stricter requirement for rubber dam height. Yet the maximum height of rubber dam can only be less than 6 m, which cannot satisfy the demand of small hydropower stations. On the other side, small hydropower stations mainly generate power during rain season and gain profit, but the rubber dam administration requires it to sink before the flood arrival. So it is urgent to develop a pier-less, non-water-damming, low-investment new dam with the advantages of rubber dam while not restricted by geographical and climate conditions.     Tiansheng company invested large amount of money , analyzed and summarized water damming construction ‘s advantage and weak point, after three years, it has developed a pier-less proneable steel gate.

II. Performance Comparation of Hydraulic Controlled Pier-less Proneable Steel Gate and traditional steel gate

1. Lifting gate:

Its advantages are that it is convenient to open and close it, safe and reliable. But it involves large investment, long building time, and long payback period. In mountainous rivers of Southern China, if the river is 20 m deep, while the gate is only 10 m high, when flood is coming, the water level is far higher than the gate height, and it is quite possible that the trees flown down with the flood will destroy the gate. At the same time, one pier must be set up in the span of two gates. If the river is wide, more piers are needed. This way water will be seriously blocked, which will affect flood discharge.

2. Hydraulic controlled pier-less proneable steel gate

Hydraulic controlled pier-less proneable steel gate was developed based on rubber dam and traditional steel gate. It has the following characteristics:

2.1  Small investment: Hydraulic controlled pier-less proneable steel gate doesn’t need piers and there is no construction on river. So it can save investment by 20-25% compared with traditional steel gate

2.2 Safe and reliable: Each time after the steel gate completes its rising and descending, the movement piston fully withdraws into the hydraulic oil cylinder, which can effectively protect the piston from rusting and prolong the life of driving system. It won’t vibrate because of unstable water flow. It can fully prone to the bottom because there is no pier. The gate won’t be destroyed because of earthquake, floaters and human activities.2.3  Convenient maintenance and repair: Because when the gate is working, the driving system and the gate panel are separated, so it is convenient to maintain and repair the oil cylinder and slideway, and that will not affect the working of the gate.2.4 Wide application scope: Hydraulic controlled pier-less proneable steel gate, like rubber gate, doesn’t need piers and can fully prone to the bottom without blocking of water. It is not restricted by river width and limit of geographical and climate conditions, and suitable for any river style. There is no need to make any alteration to the riverway.2.5 Quick installation speed, short construction period and small investment2.6. Short gate sinking time: It only takes 20-30 minutes for this new type of gate to fully sink.2.7  The water retaining height can be adjusted at short time. 2.8 The building height of steel gate can be 4-14 m, and top water surpassing height is 1-1.5m.2.9 Its normal service life is 30-50 years.

2011 newest water flood gate