JPH1030888A - Steam condenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steam condenser which is free of noise or vibration accompanied by the condensation of steam. SOLUTION: A steam ejector 3 is connected to a steam supply pipeline 4. A suction compartment 10 of the steam ejector 3 is made to communicate with a liquid 1 to be heated by way of a pipe 11. The outlet side of the steam ejector 3 is connected to a high temperature dispersion supply opening 9 by way of a heat exchanger 5. A low temperature liquid 1 sucked up into the suction compartment 10 is mixed with steam and supplied to the heat exchanger 5 where the mixed steam is hat-exchanged with the steam from the steam supply pipeline 4 and turned into high temperature water so that it may be supplied into the liquid 1 from the dispersion supply opening 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam condensing device for directly dispersing and supplying high-temperature steam into a liquid to be heated, condensing the supplied steam, and heating the liquid to be heated.

[0002]

2. Description of the Related Art As a conventional steam condenser, for example,
There is one disclosed in Japanese Utility Model Laid-Open No. 50-76202.
This is a steam discharge pipe that discharges steam directly into the water, and a number of holes are provided on the peripheral wall of the submerged part so that the contact area of steam and water increases in the direction of increasing water depth. It absorbs pressure changes in the discharge pipe to prevent noise and vibration during vapor condensation.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
Vibration and noise can be prevented when the steam supply amount does not exceed a certain amount, but there was a problem that vibration and noise could not be reliably prevented when a large amount of steam was supplied. .

When steam is directly discharged into water, the steam is instantaneously condensed and its volume is reduced, so that steam bubbles are destroyed and significant noise and vibration are generated.

[0005] It is therefore an object of the present invention to provide a steam condensing apparatus which does not generate significant noise or vibration due to the condensation of steam, regardless of the amount of steam supplied.

[0006]

The means of the present invention taken to solve the above-mentioned problems is to supply high-temperature steam into a low-temperature liquid and heat the low-temperature liquid. By disposing the ejector, the liquid to be heated is sucked into the suction chamber of the steam ejector, and heat exchange is performed between the suction liquid and the supplied steam, thereby lowering the supplied vapor temperature to a predetermined temperature and supplying the supplied liquid into the heated liquid. Is what you do.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A part of a liquid to be heated is sucked into a suction chamber of a steam ejector, mixed with steam in the ejector to lower the temperature, and the temperature of the mixed fluid and the steam supplied to the heated fluid are reduced. Is subjected to heat exchange, the temperature of the supplied steam decreases, and most of the condensed water is condensed to become high-temperature water and supplied to the liquid to be heated. Since the supply to the liquid to be heated is not steam but all of the condensed high-temperature water, the vapor is less likely to condense in the liquid to be heated. There is almost no vibration.

In the course of suction into the suction chamber of the steam ejector, heat exchange is performed between the suctioned heated liquid and the supplied steam, so that the sucked heated liquid is heated and rises in temperature to increase the temperature of the steam ejector. The supply steam is sucked into the suction chamber, while the temperature of the supplied steam drops, and most of the condensed water is condensed and supplied as high-temperature water into the liquid to be heated. Since most of the liquid to be supplied into the liquid to be heated is high-temperature water, noise and vibration due to condensation of vapor in the liquid to be heated do not occur.

[0009]

FIG. 1 shows a first embodiment. An open tank 2 containing the liquid 1 to be heated, a steam ejector 3 for sucking the liquid 1 to be heated, a steam supply pipe 4 for supplying steam for heating, and a heat exchanger 5 constitute a steam condensing device. .

[0010] The steam supply pipe 4 is branched, and one is supplied to a valve 6.
Connected to the heat exchanger 5 via the
Through a nozzle (not shown) in the suction chamber 10 of the steam ejector 3. The lower part of the heat exchanger 5 is connected to a high-temperature water dispersion supply port 9 through a pipe 8. The suction chamber 10 of the steam ejector 3 communicates with the bottom of the liquid 1 to be heated via a pipe 11. The outlet side of the steam ejector 3 is connected to the heat exchanger 5 via a pipe 12.

When steam is supplied from the steam supply pipe 4 to the steam ejector 3, a suction force is generated in the suction chamber 10 and the pipe 11
, The liquid to be heated is sucked, mixed with the supplied steam, and supplied to the heat exchanger 5 through the pipe 12 as a low-temperature fluid. On the other hand, the steam supplied to the heat exchanger 5 via the valve 6 is
The low-temperature fluid from the ejector 3 is mixed with the low-temperature fluid in the heat exchanger 5 to exchange heat and condensed. The high-temperature water is dispersed and supplied from the dispersion supply port 9 into the liquid 1 to be heated, thereby heating the liquid 1 to be heated. .

The liquid to be heated 1 is supplied with heat-exchanged high-temperature water, which does not cause instantaneous condensation as in the case of supplying steam and does not generate noise or vibration. The heating liquid can be heated.

Next, a second embodiment will be described with reference to FIG.
The same members as those in the first embodiment shown in FIG. In this embodiment, the liquid to be heated 1 to be sucked into the suction chamber 10 of the steam ejector 3 is sucked from the bottom of the tank 2 through the pipe 13 and the heat exchanger 14. That is, the pipe 13 is connected to the lower part of the heat exchanger 14 via the check valve 15, and the upper part of the heat exchanger 14 is connected to the suction chamber 10 of the steam ejector 3 via the check valve 16. In the heat exchanger 14, the steam supply pipe 4 is arranged in a coil shape, and the lower part thereof is connected to the high-temperature water dispersion supply port 9 via the pipe 8.
The outlet side of the steam ejector 3 is connected to a separate high-temperature water dispersion supply port 18 via a pipe 17.

When steam is supplied from the steam supply pipe 4 to the steam ejector 3, the liquid 1 to be heated is transferred from the pipe 13 to the heat exchanger 1.
The liquid is sucked into the suction chamber 10 through the suction pipe 4. On the other hand, steam is separately supplied into the heat exchanger 14, and the steam exchanges heat with the low-temperature liquid 1 to be heated from the pipe 13 in the heat exchanger 14, condenses, and turns into high-temperature water. The liquid to be heated 1 is dispersed and supplied into the liquid to be heated 1 from the dispersion supply port 8 and the liquid to be heated 9 without generating noise or vibration. The liquid 1 to be heated from the tube 13 that has been heat-exchanged by the steam in the heat exchanger 14 rises in temperature and is sucked into the suction chamber 10 of the steam ejector 3, mixed with the steam to form high-temperature water and becomes the pipe 17. And a separate supply port 18
From the liquid to be heated 1 to heat the liquid 1 to be heated without generating noise or vibration.

Next, a third embodiment will be described with reference to FIG.
The same members as those in the first and second embodiments of FIGS. 1 and 2 are denoted by the same reference numerals. In this embodiment, the steam ejector 3 is disposed between the steam supply pipe 4 and the heat exchanger 14, and the outlet side of the steam ejector 3 is connected to the coil pipe 20 in the heat exchanger 14; It is connected to a high-temperature water dispersion supply port 9 via a pipe 8.

When steam is supplied from the steam supply pipe 4 to the steam ejector 3, the liquid 1 to be heated is sucked into the suction chamber 10 through the pipe 13, the check valve 15, the heat exchanger 14, and the check valve 16. The mixture is mixed with steam in the steam ejector 3, further passes through the coil tube 20 and exchanges heat with the liquid 1 to be heated from the tube 13, and becomes high-temperature water to form the high-temperature water from the tube 8 and the dispersion supply port 9.
The heated liquid 1 is heated by being dispersed and supplied therein.

[0017]

According to the steam condensing apparatus of the present invention, the steam supplied to the liquid to be heated is exchanged with a part of the liquid to be heated in advance to be condensed into high-temperature water, whereby the water in the liquid to be heated is condensed. It is possible to obtain a steam condensing device that does not generate noise or vibration due to steam condensation.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a steam condensing device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heated liquid 2 Tank 3 Steam ejector 4 Steam supply pipe 5, 14 Heat exchanger 9 Hot water dispersion supply port 10 Suction chamber 20 Coil pipe

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[Procedure amendment]

[Submission date] September 19, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a steam condensing device of the present invention.

FIG. 2 is a sectional view showing another embodiment of the steam condensing device of the present invention.

FIG. 3 is a sectional view showing another embodiment of the steam condensing device of the present invention.

[Description of Signs] 1 Liquid to be heated 2 Tank 3 Steam ejector 4 Steam supply pipe 5, 14 Heat exchanger 9 High-temperature water dispersion supply port 10 Suction chamber 20 Coil pipe

Claims (1)

[Claims] 1. Directly supplying high-temperature steam into a low-temperature liquid,
In a system for heating a low-temperature liquid, a steam ejector is arranged on a steam supply side, a liquid to be heated is sucked into a suction chamber of the steam ejector, and heat exchange is performed between the sucked liquid and the supplied steam to supply steam. A steam condensing device, wherein the temperature is reduced to a predetermined temperature and supplied into a liquid to be heated.