Give you a brief explanation about the development of desuperheating and decompression devices


Release time:

2021-12-06

The temperature and pressure reduction device is a conversion device that utilizes steam heat energy parameters (pressure, temperature) and is widely used in thermal engineering in modern industries such as cogeneration of heat and power, central heating (or steam supply) and light industry, electric power, chemical industry, textile and other enterprises. Energy-saving devices for waste heat and waste heat to meet user requirements, fully save heat energy, and rationally use heat energy.

Give you a brief explanation about the development of desuperheating and decompression devices

Development of desuperheating and decompression device

The temperature and pressure reduction device is a conversion device that utilizes steam heat energy parameters (pressure, temperature) and is widely used in thermal engineering in modern industries such as cogeneration of heat and power, central heating (or steam supply) and light industry, electric power, chemical industry, textile and other enterprises. Energy-saving devices for waste heat and waste heat to meet user requirements, fully save heat energy, and rationally use heat energy. The cooling and decompression device was introduced from the Soviet Union in the early 1950s. Up to now, it is roughly divided into three generations of products.

The first generation was set up separately for decompression and temperature reduction. The decompression valve of the decompression system is mostly a single-stage plunger type with an orifice to complete the decompression. The cooling system uses a throttle valve, a stop valve, a water supply regulating valve or Water distribution valves, check valves, pipelines, sentence pipes, etc. complete the cooling. The disadvantages of this structural cooling and pressure reducing device are complex structure, large footprint, inconvenient installation and maintenance, narrow adjustment range, high noise, and high failure rate; In addition, water is easy to accumulate in the piping, causing water hammer, causing vibration, and shortening the service life.

The second generation is integrated decompression and cooling: in addition to the first generation, the pipe also moves the desuperheating water nozzle on the pipeline to the upper or lower part of the pressure reducing valve, so that the cooling and decompression valve and the orifice plate throttle and decompress; By omitting the hot water emission reduction pipeline of the first generation structure, the occupied area is reduced, the structure is reduced, the installation and maintenance are convenient, the water hammer phenomenon in the pipeline is avoided, and the life of the device is improved. The disadvantage is the temperature reduction and pressure reduction The device only adds nozzles to the original pressure reducing valve, and the cooling system remains unchanged.

The replacement product from the third generation to the second generation: the interior of the temperature and pressure reduction device is changed to a multi-stage sleeve type, and the orifice of the multi-stage sleeve also plays the role of noise reduction. Our company's temperature and pressure reduction device and The water supply regulating valve adopts the variable flow coefficient design method of German Siemens, Mesoneilan and Fisher. The third-generation cooling and decompression device not only has all the advantages of the second-generation product, but also makes up for all the shortcomings of the second-generation product. 1. The adjustment range is improved through decompression and multi-level simultaneous adjustment; 2. Synchronization Adjust the nozzle to spray water into the valve to improve the atomization effect.

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