New energy-saving water lifting tools - water hammer pump

The water hammer pump is a new type of energy-saving water-lifting tool that does not use electricity and consumes oil, and is a new content of energy promotion in rural areas. This is an efficient water-lift device that uses the water hammer effect to directly convert a low water head into a high water head. The principle is the use of water in the flow, suddenly blocked, resulting in more than ten times the normal pressure higher than the instantaneous water hammer pressure, to achieve water. It uses a low drop of water to transport high-lift water, water is powered by water, automatic water supply day and night, high head, simple management, long service life. In Zhejiang Province, the popularization and application of water hammer pump really started in the 90s. So far, there are various models of Zhong Zhong pump more than 450 units, located in Hangzhou, Jinhua, Lishui, Shaoxing, Wenzhou, Quzhou and other regions. Water hammer pump installation must have three basic conditions: First, there must be some water, it is best to have an elderly stream of water; the second is to have a certain drop, generally 1.5m above; Third, there must be a clear purpose , That is to solve the drinking water in a certain village or a piece of cash crops or farmland watering. The ratio of water hammer pump head and head to 1: 6 ~ 1: 10 for the best. Water hammer pump is used to solve the problem of irrigation in farmland, such as mountainous area, which is rich in water resource but lack of electricity. As with the "combination of savings" can also solve the drought in mountainous water, with energy saving and no environmental pollution two major advantages. Water hammer pump can be used normally, can play its best performance, a reasonable site and the correct installation is the key part. 1, a reasonable site Wuyi County, Zhejiang Province is a mountainous area, rivers crisscross, stream down the mountain, the installation of water hammer pump conditions are good. At present, Wuyi County to promote the use of 5 sets of water hammer pumps, site selection among them according to the natural conditions of the village of the two forms. Such as the Western Union Township, Makou Village, Creek Township, Sakura Village, West Village, His Royal Highness Village is the use of the upper stream as a source of water. Zhou Village, Liu Town, Tai Hang, long snake concave two villages are in the hillside, select the downstream stream as a source of water. In particular, the latter, drinking water from the foot of the mountain, the draft of the villagers has been unable to solve the problem. And three hundred meters away from the village of a small reservoir of water flowing in the foot of the mountain stream. If you install a water hammer at the foot of the mountain library, the water hit 63 m mountain lamp reservoir, will be able to solve 56 households She villagers drinking water, water hammer pump tail water can also be introduced into the channel irrigation. Another example is Shao Zhaocun Jieshou village of Soochow reservoir flow to the creek water through the 630-type water hammer pump hit the village after the mountain pool, for the village drinking water and install solar water heater overall. This is according to their different natural conditions in the site chosen for the use of Kuandang as another form of water. 2, design and installation Water hammer pump mainly by the inlet pool, inlet pipe, pump body, pump house (tail pool), outlet pipes and reservoirs and other parts constitute a complete water supply system. In addition to the pump body, the rest of the design, installation and construction. 1) The role of the influent pool into the influent pool is as follows: (1) introducing the water of the diversion canal into the water inlet pipe; (2) regulating the water quantity within a short period of time; and (3) preventing the grass roots, bark and sediment from entering the water inlet pipe and the water hammer pump. Water hammer pump maintenance, water can be blocked into the water pipe. 2) water inlet water hammer installation of the key in the inlet pipe. Water inlet should be used high pressure, vibration-resistant seamless steel pipe, agricultural drainage can not be selected, can not use steel mesh cement pipe. The length of the inlet pipe is 8 times of the drop, and the installation angle is 7.18 ° with the horizontal plane. The slope is 1: 8. Into the pool between the pump and the pipe installation straight, not allowed to bend. We week at the village with Φ114mm, 5mm thick seamless steel pipe for water pipe, steel pipe welding 1.6Mpa flange. A total of 8 steel pipe length 46m, with 8 concrete pier support. There are 4 seamless steel pipes with a diameter of 159mm and a wall thickness of 6mm for water inlet pipe in the mouth of Makou village. The flange is connected to the water tank with a flange of 0.98 Mpa and the other is 1.6 Mpa. The length of the inlet pipe is 26m. Zuoxi village with Φ26 mm seamless steel pipe for water, total length of 12.6. Intake head to be shockproof pier. 3) The water level of the tailrace pool of pump room pump has a great relation with the working condition of water hammer pump. Because according to our test, the water level at the tail pool rises to the level at the upper edge of the impact valve and is much higher than the original design water level controlled at the impact valve midline. 4) outlet pipe outlet pipe should be as short as possible and to reduce the elbow, in order to avoid increased resistance and reduce the amount of liquid. The head loss factor for a 90 ° elbow is 1.1, the head loss for a 30 ° elbow is 0.2, and the former is 5.5 times the latter. Therefore, we put the original installation of the surrounding 4 to 8 90 ° elbow, a 40 ° elbow, reducing the local loss. Debugging and Startup of Water Hammer Pump Starting and commissioning is very important for realizing the potential of water hammer pump. Each water hammer pump has an optimum point for the output of water under the conditions of its head, drop and water intake. "Type 630", "Type 420" water hammer pump is mainly by adjusting the length of the impact valve on the impact of the valve to change the switching frequency to adjust the lift. Miniature water hammer pump is by adjusting the impact valve opening of the gap, change the frequency of its beating (switching) to adjust the lift. Economic Benefits and Social Benefits of Water Hammer Pumps Three water hammer pumps (donated to the Overseas Research and Development Association Bremen, Germany) provided by Zhejiang Province to Wuyi County have produced significant benefits since they were installed in 1992 . For example, to build an electric pumping station with the same head lift and pumping capacity, a total investment of 30,500 yuan will be required. In addition, the electric irrigation needs to pay an annual electricity cost of 3,200 yuan so that the village can save 20,780 yuan in expenditure. The social benefits of water hammer pump is also very obvious, it does not require oil, electricity, is a kind of development of mountain water resources, saving conventional energy, pollution-free ideal water lifting tools.