Negative pressure extracting device for vacuum boiler

Abstract

A negative pressure extracting device for a vacuum boiler comprises cooling tanks and a water-collecting tank, wherein a circulatory cooling water inlet is formed in the side surface of the lower part of the corresponding cooling tank; a circulatory cooling water outlet is formed in the side surface of the upper part of the corresponding cooling tank; outlets in the bottom of the cooling tanks are connected to inlets of the water-collecting tank through pipes; and at least one spiral pipe is arranged in the cooling tanks. Heat of high-temperature media in the spiral pipes is taken away by quick circulatory flowing of the circulatory cooling water, and an extracting opening of a vacuum pump is separated from an opening of a condensate water pipe by a steam-water separating partition in the water-collecting tank while condensate water is guided by the steam-water separating partition. Because the temperature of the media is reduced in real time, and the condensate water generated during extracting is well subjected to steam, oil and water separation, the quality and the temperature of oil products of the vacuum pump are guaranteed, and the purpose of continuously extracting negative pressure in real time without stopping is achieved.

Description

technical field [0001] The invention belongs to the field of vacuum equipment manufacture and maintenance, and relates to a device for extracting negative pressure from vacuum equipment, in particular to a device for extracting negative pressure from a vacuum boiler. Background technique [0002] In the process of manufacturing and post-daily maintenance and maintenance of vacuum boilers, it is necessary to vacuumize the equipment regularly to keep the atmosphere in the furnace in a good negative pressure state, so as to ensure the normal operation of the equipment with high efficiency. In actual production, since the atmosphere in the vacuum boiler and other vacuum equipment is kept at high temperature and high pressure, the boiler must be stopped to relieve the pressure during maintenance and maintenance, and the atmosphere and medium water in the furnace must be lowered to normal temperature before proceeding. Due to the condensed water dissolving into the vacuum oil of t...

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Problems solved by technology

In actual production, since the atmosphere in the vacuum boiler and other vacuum equipment is kept at high temperature and high pressure, the boiler must be stopped to relieve the pressure during maintenance and maintenance, and the atmosphere and medium water in the furnace must be lowered to normal temperature before proceeding. Due to the condensed water dissolving into the vacuum oil of the vacuum pump body, special personnel are required to regularly discharge and filter the vacuum oil and replenish new vacuum oil, which has low efficiency and a large waste of oil products and has a great impact on production; There is no technology and equipment for extracting negative pressure directly under the condition of continuous operation of vacuum equipment

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