Strong-water-impact preventing drainage system

Abstract

The invention relates to a strong-water-impact preventing drainage system and belongs to the technical field of drain valves of heat exchangers. A heat exchanger condensate stop valve is mounted at a condensate outlet of a vapor heat exchanger, a riser pipe is connected to an outlet of the heat exchanger condensate stop valve, an automatic exhaust valve is mounted at the top end of the riser pipe, the lower end of the riser pipe is connected with a horizontal condensate pipe, a water sealed well is mounted on the horizontal condensate pipe, an outlet of the water sealed well is connected witha water impact eliminator, a condensate inlet is arranged on one side of a tank of the water impact eliminator, and a condensate outlet is arranged on the other side of the tank of the water impact eliminator. Besides, a vertical retainer extending along the height direction is arranged in an inner cavity of the tank and provided with a plurality of curve plates extending out of the condensate inlet, an automatic exhaust valve is mounted at the top of the water impact eliminator, the curve plates of the water impact eliminator are distributed along the height direction of the vertical retainer in an array manner, an outlet of the water impact eliminator is connected with a drain valve, and an outlet of the drain valve is connected with a condensate recycling system. The drainage system has a function of preventing damage to the drain valve due to water impact, and accordingly the service life of the drain valve can be prolonged.

Description

technical field [0001] The invention relates to a drainage system, in particular to an anti-strong water shock drainage system, which is suitable for the situation that the steam heat exchanger is relatively high from the ground, and its condensed water falls from a high place and enters the drainage valve. Background technique [0002] The steam heat exchanger is arranged inside the process equipment (such as oven, reboiler, etc.). When the steam heat exchanger is relatively high from the ground and it is inconvenient to install a steam trap at the condensate outlet, the steam trap is usually installed on the ground near the condensate main pipe. s position. After the condensed water flows out of the steam heat exchanger and falls from a high place, the potential energy is converted into kinetic energy, and the speed and impact force increase, which can easily cause destructive water hammer to the trap, resulting in a very short service life of the trap. The greater the dr...

AI Technical Summary

Problems solved by technology

After the condensed water flows out of the steam heat exchanger and falls from a high place, the potential energy is converted into kinetic energy, and the speed and impact force increase, which can easily cause destructive water hammer to the trap, resulting in a very short service life of the trap

The greater the drop between the condensed water outlet of the steam heat exchanger and the ground, the greater the impact on the trap. When the drop between the condensed water outlet of the steam heat exchanger and the ground exceeds 10 meters, the trap will be damaged even after one day of use, resulting in drain failure. frequent valve replacement

In order to simplify the picture and meet the production requirements, the operator often opens the bypass shut-off valve connected to both ends of the trap, and adjusts the discharge of condensed water by controlling the opening of the bypass shut-off valve, which often results in mixed discharge of condensed water and steam. Serious steam leakage leads to lower steam energy efficiency and increased steam consumption per unit of product

In addition, steam leakage leads to faster steam flow, intensified flushing of pipelines and equipment, and shortens the overall life of the system

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