1. The concept of water hammer tank
Water hammer tanks are generally assembled on various pipelines, such as large primary pump rooms or halfway booster pump stations. They are a crucial industrial equipment that can reduce the overvoltage caused by water hammer and provide water resources to reduce negative pressure when the gate valve suddenly opens.
2. Application of water hammer tank
Water hammer tanks are mainly used for long-distance water pipelines, including domestic water plants, sewage and wastewater treatment plants, seawater desalination plants, power plants, oil pipelines, and other main purposes. Due to the increasing scarcity of water sources worldwide and the rising costs of construction and daily maintenance of water conservancy and power projects, the demand for sustainable operation is gradually increasing. The effectiveness of water hammer tanks is becoming more and more significant. They not only protect facilities, equipment pipelines, pump rooms, fire hydrants, gate valves, and other related machinery and equipment from damage caused by water hammer accidents, but also ensure the long-term and reasonable operation of facilities, eliminating the expensive cost of frequent maintenance.
3. Principle of Water Hammer Tank
The water hammer tank can digest and absorb the sudden increase in working pressure in the water supply pipeline, or quickly provide additional water when the working pressure drops rapidly. The inner tank water hammer tank has the same effect as traditional reduced waterproof hammer tanks and double transformer towers in hydraulic power generation operation. A water hammer tank can be understood as a reservoir, which can be assembled into various pipelines to reduce the fluctuating working pressure caused by changes in the total liquid flow rate of the pipeline.

When negative pressure occurs after the pump, the stored water in the tank is quickly introduced into the pipeline under the drive of compressed air, preventing negative pressure in the pipeline and avoiding pipeline collapse; When water flows back in the pipeline, a portion of the water in the pipeline will be added to the water hammer tank. Based on the digestion and absorption of the water in the pipeline, the pressure inside the pipeline will be balanced and the water hammer wave will be digested and absorbed to prevent overpressure in the pipeline, avoid pipeline collapse, and maintain the pump room.
4. Types of Water Hammer Tanks
From the perspective of structure, water hammer tanks are generally divided into two types: one is an air filled inner tank water hammer elimination tank, and the other is a compact water hammer elimination tank without an inner tank. The effectiveness of the two types of water hammer elimination tanks in terms of safety protection against water hammer is basically the same. In practical terms, the inner tank water hammer elimination tank has better performance.
From a product perspective, water hammer elimination tanks are generally divided into two types: column type and vertical type.
5. Model selection of water hammer tank
The selection of the model for the water hammer elimination tank is a complex engineering project that involves various constraints such as pipeline design, strength calculation, and facility and pipeline layout. It also requires the configuration of specialized calculation software, and the calculation process and results must be recognized by authoritative qualification certificate organizations.
Manufacturers of water hammer tanks can design, produce, and manufacture water hammer tanks based on the calculated capacity, inlet and outlet specifications, and pressure levels. The requirements for design schemes, production, and manufacturing also vary. Currently, most parts of the world are based on three standards: ASME codes are generally used in places such as the Americas and the Middle East; European and African places generally follow CE/PED standards; China generally follows the GB150 standard. There are also many differences in the small details of the above specifications, mainly reflected in the behavior of the main body of the water hammer tank body. For the inner part of the inner tank of the inner tank water hammer tank, it is currently popular internationally to use large-sized butyl as the inner tank, which has certain advantages in terms of waterproof hammer performance and service life compared to other materials.
7. Installation, maintenance and upkeep of water hammer tank
The installation of water hammer tanks must strictly follow the engineering drawings. After assembly, adjustments and maintenance should be made according to the specific operating conditions of the on-site system software, including adjusting the main parameters such as the pre charging working pressure of the water hammer tank.