JP2011106703A - Waste steam recovering device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste steam recovering device which hardly generates vibration and noise accompanied by the collapse of entrained air. <P>SOLUTION: A waste steam tank 2 is connected to a waste steam passage 1. An air discharge pipe 4 is connected to a top face of the waste steam tank 2. A re-evaporation tank 11 is connected to a lower part of the waste steam tank 2 through a warm water ejector pipe 10. A lower face of the waste steam tank 2 is connected to a lower part of the re-evaporation tank 11 through a warm water circulation pump 13. Only the waste steam in which air supplied into the waste steam tank 2 from the waste steam passage 1 is entrained is condensed in the warm water 3 to be warm water while the air is discharged to the outside of a system from the air discharge pipe 4 without being condensed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is, for example, waste steam discarded from various steam-using devices such as shrink tunnels, steamers, rubber vulcanizers, etc., and is recovered by exchanging heat so that it can be trapped inside and outside the factory building. It is related with the waste steam recovery device which can eliminate.

  The waste steam recovery unit is a shrink tunnel that uses steam, and vacuum suction means that consists of an ejector, a liquid tank, and a circulation pump connected by a waste steam recovery pipe. By sucking with the sucking means, it is possible to eliminate waste steam that can get trapped.

  In this waste steam recovery apparatus, there is a problem that the air mixed in the waste steam causes damage to the apparatus due to vibration and noise generated when the mixed air collapses in the ejector constituting the vacuum suction means. In addition, there is a problem that the pumping capacity is lowered when the circulating air sucks the mixed air.

Japanese Patent Laid-Open No. 2002-5582

  The problem to be solved is to provide a waste steam recovery device that does not generate vibration and noise associated with the collapse of mixed air.

  The present invention discharges waste steam flowing down from a steam device to a predetermined location, and connects a waste steam tank to a waste steam passage through which the waste steam flows, and the waste steam tank Hot water having a temperature slightly lower than the saturation temperature is stored, waste steam is supplied into the hot water, and an air discharge pipe is connected to the upper part of the waste steam tank.

  Since the waste steam recovery apparatus of the present invention does not use an ejector, it can prevent vibration and noise generated when the mixed air collapses in the ejector.

The block diagram which shows the Example of the waste steam recovery apparatus of this invention.

 As shown in FIG. 1, a waste steam recovery apparatus is configured by a waste steam passage 1, a waste steam tank 2 connected to the waste steam passage 1, and an air discharge pipe 4 connected to the upper portion of the waste steam tank 2. .

  By connecting the lower end portion of the waste steam passage 1 to a steam device (not shown) and connecting the upper end portion to the lower left side of the waste steam tank 2, the waste steam generated in the steam device is supplied into the waste steam tank 2. Is. A predetermined amount of warm water 3 is stored in the waste steam tank 2. The hot water 3 is maintained at a temperature slightly lower than the saturation temperature of the waste steam supplied from the waste steam passage 1, for example, about 2 to 5 ° C. lower than the saturation temperature.

 A cooling water supply pipe 5 for supplying cooling water is connected to the side surface of the waste steam tank 2 and a temperature sensor 6 for detecting the temperature of the hot water 3 is attached. A pressure gas supply pipe 7 and a pressure sensor 8 for detecting the pressure in the waste steam tank 2 are attached to the upper surface of the waste steam tank 2. A liquid level sensor 9 that detects the liquid level of the hot water 3 in the waste steam tank 2 is attached to the right side surface of the waste steam tank 2. A pressurized gas according to the temperature of the hot water 3, specifically, compressed air, is supplied from the pressurized gas supply pipe 7.

 A hot water discharge pipe 10 is connected to the lower surface of the waste steam tank 2 and connected to the re-evaporation tank 11. The hot water 3 supplied from the hot water discharge pipe 10 to the re-evaporation tank 11 is re-evaporated in the re-evaporation tank 11 to become low-pressure steam, and is supplied from the low-pressure steam supply pipe 12 to a use location of low-pressure steam (not shown). Is.

 Connected to the bottom surface of the re-evaporation tank 11 is a hot water circulation pump 13 that supplies hot water remaining without re-evaporation in the re-evaporation tank 11 to the waste steam tank 2. The discharge port side of the hot water circulation pump 13 is connected to the lower surface of the waste steam tank 2 through a pipeline 14.

 The waste steam mixed with air supplied from the waste steam passage 1 into the waste steam tank 2 is condensed into warm water only in the hot water 3, while the mixed air is not condensed and the air discharge pipe 4 is discharged out of the system.

  As described above, by disposing the waste steam tank 2 in the waste steam passage 1 according to the present invention, it is possible to eliminate the waste steam rising up.

  The present invention can be applied to any steam using apparatus that uses steam.

DESCRIPTION OF SYMBOLS 1 Waste steam passage 2 Waste steam tank 3 Hot water 4 Air discharge pipe 5 Cooling water supply pipe 10 Hot water extraction pipe 11 Re-evaporation tank 12 Low-pressure steam supply pipe 13 Hot water circulation pump

Claims (1)

 In the case of discharging waste steam flowing down from the steam device to a predetermined location, a waste steam tank is connected to the waste steam passage through which the waste steam flows, and the waste steam tank has a temperature higher than the saturation temperature of the waste steam. A waste steam recovery apparatus characterized in that warm water having a slightly low temperature is stored, waste steam is supplied into the warm water, and an air discharge pipe is connected to the upper part of the waste steam tank.