JPH0886398A - Condensate discharging device - Google Patents

Abstract

PURPOSE: To provide a condensate discharging device capable of sucking the condensate produced in a steam using device surely without accumulating it. CONSTITUTION: A steam feeding pipe 15 to feed steam is connected to a steam using device 1, and a gas-liquid separating container 3 is connected to the steam using device 1 through a pipe 2. Also a cylindrical pipe 4 and an atmospheric pressure interconnecting pipe 6 are attached to the inside of the gas-liquid separating container 3 so as to form a liquid sump part 7 and an atmospheric pressure interconnecting part 8, and a cooling pipe 10 is arranged inside the gas-liquid separating container 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to air as a non-condensable gas that accumulates in a steam-using device, and to condensate produced by condensation of steam from a steam-using device.
Usually, in a steam using apparatus, in order to increase heating efficiency by steam, air staying inside the apparatus and condensed water generated by heating by the steam are promptly discharged to the outside of the apparatus.

[0002]

2. Description of the Related Art Conventionally, a so-called steam trap has been used as a device for discharging initial air and condensed water. Various types of steam traps are used,
When the condensate flows in using the difference in specific gravity between steam and the condensate, the float floats up and opens the valve opening to discharge the condensate out of the system, bimetal, velor, etc. There is used a device that incorporates the temperature responsive element of (1) and discharges condensate or air whose temperature is lower than steam by a predetermined temperature.

[0003]

The conventional steam trap has a problem in that the condensed water generated in the steam using apparatus cannot be sucked in and the condensed water stays in the steam using apparatus. It was If the steam usage pressure is low and there is almost no difference from the atmospheric pressure, or if it is not possible to provide a fall part between the steam usage device and the steam trap, the condensate generated in the steam usage device It cannot flow down to the steam trap and stays there.

Therefore, a technical object of the present invention is to obtain a condensate drainage device which can surely suck the condensate water generated in a steam using device or the like so as not to retain the condensed water. .

[0005]

Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problem is to discharge a non-condensable gas or condensed condensate from a steam using device. What comprises a liquid separation container, a liquid reservoir provided in the lower part of the container, an atmospheric pressure communication part communicating with the lower part of the liquid reservoir, and a cooling part mainly attached to the upper part of the gas-liquid separation container Is.

[0006]

The operation of the above technical means is as follows.
At the beginning of use of the steam-using device, air is accumulated, and there is no liquid in the liquid reservoir inside the gas-liquid separation container. Therefore,
When the initial steam is supplied to the steam using device and air is pushed out into the gas-liquid separation container, the air passes through the gas-liquid separation container and is discharged to the outside of the system.

When the condensate condensed by the steam using device flows into the gas-liquid separation container after the air is discharged, the condensate collects in the lower part and stays in the liquid reservoir, and at the same time, the condensate is condensed. Partly re-evaporates. By cooling the re-evaporated vapor by the cooling unit, the inside of the gas-liquid separation container is in a reduced pressure state lower than atmospheric pressure. By reducing the pressure inside the gas-liquid separation container,
Condensate produced in the steam-using device is sucked into the gas-liquid separation container, and when it is accumulated in a predetermined amount, it is discharged to the outside of the system via the liquid reservoir and the atmospheric pressure communicating portion due to the water head pressure.

[0008]

EXAMPLES Examples showing specific examples of the above technical means will be described. A steam supply pipe 15 for supplying steam for heating to the steam using apparatus 1 is connected via a valve 16. A gas-liquid separation container 3 is connected to the steam using device 1 via a pipe line 2. The gas-liquid separation container 3 is formed as a cylindrical container, and a cylindrical pipe 4 having a diameter smaller than that of the gas-liquid separation container 3 is attached to the center portion with a gap 5 provided at the lower end. An atmospheric pressure communicating pipe 6 having a diameter smaller than that of the cylindrical pipe 4 is arranged below the cylindrical pipe 4. The atmospheric pressure communication pipe 6 is opened to the atmosphere by a pipe 20. The atmospheric pressure communication pipe 6 is attached so that the upper end thereof is located above the lower end of the cylindrical pipe 4 by a predetermined amount. The outer periphery of the atmospheric pressure communication pipe 6, the inner and outer periphery of the cylindrical pipe 4, and the lower inner periphery of the gas-liquid separation container 3 form a liquid reservoir 7. An atmospheric pressure communication portion 8 is formed on the inner circumferences of the atmospheric pressure communication pipe 6 and the cylindrical pipe 4.

A cooling pipe 10 as a cooling unit is attached to the upper part of the gas-liquid separation container 3. The cooling pipe 10 is formed by spirally surrounding the outer circumference of the cylindrical pipe 4, and the cooling fluid supply unit 11
The cooling fluid is supplied from the cooling fluid, and the steam in the gas-liquid separation container 3 is cooled to condense it into condensate, which is then removed from the cooling fluid extraction section 12 to the outside of the system, or sent to a separate hot water point. To do.

The vapor supply pipe 15 is branched and connected to the upper part of the gas-liquid separation container 3 via a pipe line 17 and a valve 18. This branch line 17 secures a depressurized state in the gas-liquid separation container 3 by supplying a desired amount of steam when the amount of re-evaporated vapor in the gas-liquid separation container 3 is small or fluctuates. It is for.

Next, the operation will be described. At the beginning of use of the steam using device 1, non-condensable air is accumulated in the steam using device 1 and no liquid exists in the liquid reservoir 7 below the gas-liquid separation container 3. In this state, when the valve 16 is opened to supply the steam for heating from the steam supply pipe 15 to the steam using apparatus 1, the air in the steam using apparatus 1 is pushed out by the steam and reaches the gas-liquid separation container 3. Liquid-free lower liquid reservoir 7, gap 5, atmospheric pressure communication pipe 6 and pipe 20
And then discharged to the outside.

Condensate generated by the initial heating of the steam-using device 1 flows into the gas-liquid separation container 3 as the air is discharged, and the condensed water accumulates in the liquid reservoir 7 and a part of it. It re-evaporates to become vapor again and accumulates above the gas-liquid separation container 3. By supplying the cooling fluid to the cooling pipe 10, the re-evaporated vapor is condensed again and becomes condensed water, and the inside of the gas-liquid separation container 3 is depressurized by the rate of the condensed vapor. Due to the reduced pressure state, the condensate generated by heating in the steam using device 1 is sucked into the gas-liquid separation container 3 and is accumulated in the liquid reservoir 7. When the amount of the condensed water accumulated in the liquid reservoir 7 exceeds a predetermined amount, the head pressure of the condensed water exceeds the atmospheric pressure, and the condensed water is discharged from the atmospheric pressure communicating pipe 6 and the pipe 20 to the outside.

[0013]

As described above, according to the present invention, the inside of the gas-liquid separation container can be shut off from the atmospheric pressure atmosphere by the liquid reservoir, and a predetermined depressurized state can be maintained by the cooling unit. Even if it is not possible to provide a device or a trap for the steam trap, the condensate and initial air generated in the steam-using device are sucked into the gas-liquid separation container and discharged to the outside of the system. can do.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of use of a condensate discharge device of the present invention.

[Explanation of symbols]

 1 Steam use device 3 Gas-liquid separation container 4 Cylindrical pipe 6 Atmospheric pressure communication pipe 7 Liquid storage part 8 Atmospheric pressure communication part 10 Cooling pipe 15 Steam supply pipe

Claims (1)

[Claims] 1. A device for discharging a non-condensable gas or condensed condensate from a steam-using device, a gas-liquid separation container, a liquid reservoir provided at a lower portion of the container, and a lower portion of the liquid reservoir. A condensate discharge device comprising: an atmospheric pressure communication part that communicates with a cooling part, which is mainly attached to an upper part of a gas-liquid separation container.