A hydraulic automatic control pipe network superimposed pressure water supply equipment

Abstract

The invention discloses a pressure-superposed water supplying facility of a hydraulic power automatic control pipe network, mainly comprising water inlet hydraulic pressure control valves (4-1, 4-2), a water level control device (6), an adjusting tank (7), a hydraulic power switching valve (10), a pressure transmitter (18), an electrical cabinet (20) and a boosting pump (16). The hydraulic power switching valve (10) is mainly composed of a flange valve seat (10-1), a flange tee (10-2), a flange valve cover (10-3), a soft rubber film (10-4) and a weight brake (10-5),and the water level control device (6) is composed of an open-type small water tank (6-1) and a siphon water level control pipe (6-2). The pressure-superposed water supplying facility is characterized in that: hydraulic power automatic control is adopted, the disadvantages that electric automatic control is easy to be disturbed artificially and the safety reliability is low are overcome; on the premise of ensuring water safety of users, the pressure-superposed water supplying facility is beneficial to improving pipe network regulating capacity and promoting pipe network balanced water supplying; the normal-pressure adjusting tank is adopted to replace a pressure-bearing buffer pot or a pressure-bearing buffer tank, so as to greatly save the production cost.

Description

technical field [0001] The invention relates to a hydraulic automatic control pipe network superimposed water supply equipment, specifically a complete set of water supply equipment including a normal pressure regulating water tank, a pressurized water pump and an automatic control device, which is used for secondary pressurization of domestic and production water supply. Background technique [0002] Pipe network superimposed pressure water supply equipment, also known as non-negative pressure water supply equipment, has been gradually popularized and applied in municipal water supply pipe networks due to its advantages of superimposed pressure and energy saving. However, this type of equipment currently has the following technical deficiencies: [0003] 1. The flow rate of the pressurized water pump must meet the user's water consumption requirements at any time, which is much larger than the usual high-level water tank water supply method, which will inevitably aggravate t...

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Problems solved by technology

At this time, because the adjusted water volume of the buffer water tank or buffer water tank supporting the equipment is too small, it will be used up within half an hour, and it is impossible to ensure the user's water safety. For users with uninterrupted water supply, such as hospitals, important institutions and buildings This kind of equipment cannot be used in high-standard residential areas. The practice of adding atmospheric water storage tanks to achieve water safety makes the composition of the entire set of equipment complicated and repetitive, which greatly increases production costs.

[0004] 2. The function of the buffer water tank or the buffer water tank is equivalent to that of the normal pressure regulating water tank, but it must be manufactured according to the conditions of pressure bearing, and the production cost is 5 to 10 times that of the normal pressure water tank. Considering the cost, the buffer water tank or the buffer water tank adopts a relatively small capacity, which cannot ensure the user's water consumption requirements

[0005] 3. When the water supply pressure of the pipe network is lower than the predetermined value, a pressure sensor and an electric actuator must be used to close the valve on the water pump suction pipe. This electric control method has the disadvantages of high degree of human intervention and low safety and reliability. The drive may make the user indifferent to whether the control function can be performed normally, or even the valve cannot be closed due to human failure, and this kind of failure is usually not easy to be found

[0006] 4. When the pipe network implements a water supply mechanism that guarantees the minimum water supply pressure, the "no negative pressure" function does not have any promotion significance for the safe water supply of the pipe network, and becomes an unnecessary decoration, or even a hidden danger that endangers safe water supply

[0007] 5. The operation of such equipment will aggravate the contradiction between the supply and demand of the pipe network, it is impossible to promote the balanced water supply of the pipe network, and the best energy-saving effect cannot be achieved on the whole

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