JP3863254B2 - Drainage device in barometric condenser - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention drains the cooling water used for condensation from the inside of the can body when vapor generated from a vacuum evaporator or the like for evaporating and condensing liquid is condensed in a closed can body in a barometric condenser. This relates to a drainage device.
[0002]
[Prior art]
In general, this type of barometric condenser is well known, and as shown in FIG. 2 (A), steam from a vacuum evaporator or the like is fed into a sealed can body 1 into a steam inlet 2. In the can body 1, it condenses by directly contacting the cooling water supplied from the cooling water supply port 3 in the can body 1. The lower end of the atmospheric leg tube 4 is drained to the ground hot well 5 inserted in a water-sealed manner through the atmospheric leg tube 4 extending downward. Reference numeral 6 denotes a steam ejector for maintaining the inside of the can body 1 at a predetermined degree of vacuum.
[0003]
In this case, the barometric condenser has its can body 1 installed at such a height as to secure an air leg having a height H of at least 10.3 m between the vicinity of the bottom and the cooling water surface in the hot well 5. Thus, the cooling water in the can body 1 is discharged to the hot well 5 through the atmospheric leg tube 4 in a state in which the inside of the can body 1 is maintained at a predetermined degree of vacuum. ing.
[0004]
[Problems to be solved by the invention]
However, in this type of barometric condenser, the can body 1 is provided with an air leg having a height H of at least 10.3 m between the vicinity of the bottom of the can body 1 and the cooling water surface in the hot well 5. However, at the place where the barometric condenser is installed, the can body 1 is placed at a position higher than the 10.3 m atmospheric leg as shown in FIG. 2 (B). There are cases where it must be installed at a high position.
[0005]
In this way, when the can body 1 must be installed at a position much higher than the 10.3 m atmospheric leg, the cooling water surface in the atmospheric leg pipe 4 extending downward from the bottom of the can body 1 is reduced. , It is located far below the vicinity of the bottom of the can body 1.
Therefore, a part of the steam introduced into the can body 1 is drawn into the portion above the cooling water surface in the atmospheric leg pipe 4 by the cooling water flowing down into the atmospheric leg pipe 4, Abrupt condensation in the narrow atmospheric leg tube 4 causes intense vibration and noise in this portion.
[0006]
That is, when the atmospheric leg having a height H is set in the vicinity of 10.3 m, the cooling water surface in the atmospheric leg pipe 4 is located close to the can body 1, so that most of the condensation of steam is caused by the can body. Because the vibration and noise generated in the atmospheric leg tube due to the condensation of the vapor are small, the atmospheric leg of the can body 1 is farther than 10.3 m due to the arrangement of the barometric condenser. However, there is a problem that intense vibration and noise are generated in the atmospheric leg pipe 4 from the can body 1 due to condensation of steam drawn into the atmospheric leg pipe 4.
[0007]
This invention makes it a technical subject to provide the drain pipe apparatus which eliminated this problem.
[0008]
[Means for Solving the Problems]
In order to achieve this technical problem, the present invention
“It consists of a sealed can body placed above the ground and a hot well on the ground, and a steam source such as a steam ejector is connected to the can body, and a steam inlet and a cooling water supply port In addition, in the barometric condenser formed by connecting an atmospheric leg pipe extending downward to the bottom of the can body,
A water sealing pot opened to the atmosphere inside is disposed at a height between the can body and the hot well, and the air leg pipe from the can body is placed in the water sealing pot. While the lower end is inserted in a water-sealed shape, a drain pipe for connecting cooling water overflowing from the water-sealing pot to the hot well is connected to the water-sealing pot. "
It was made the composition called.
[0009]
[Operation and effect of the invention]
In this way, a water sealing pot having an open interior to the atmosphere is disposed at a height between the can body and the hot well, and the atmosphere from the can body is placed in the water sealing pot. While the lower end of the leg tube is inserted in a water-sealed shape, a drain pipe for connecting cooling water overflowing from the water-sealing pot to the ground hot well is connected to the water-sealing pot. In the water sealing pot, the cooling water in the water sealing pot can be smoothly discharged to the hot well through the air leg pipe, the water sealing pot and the drain pipe. Since the height is from the cooling water surface, when the can body is disposed at a position far higher than 10.3 m from the ground, the cooling water surface in the atmospheric leg pipe is raised from the ground to the can body. Regardless of that, it can be located near the bottom of the can body It is kill the.
[0010]
Therefore, according to the present invention, in the barometric condenser, when the can body is disposed at a position much higher than 10.3 m from the ground, vibration and noise are generated in the atmospheric leg pipe from the can body. It has the effect that it can reduce reliably.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
In this figure, reference numeral 11 denotes a sealed can body, and this can body 11 is disposed at a location where the height from the ground surface 12 is considerably high.
A hot well 13 is provided on the ground surface 12.
[0012]
The upper portion of the can body 11 is connected to a vacuum generating source such as a steam ejector 14, and the can body 11 includes an inlet 15 for steam from a vacuum evaporator (not shown) and the like, a can body 11 is provided with a cooling water supply port 16, and an atmospheric leg pipe 17 is connected to the bottom of the can body 11 so as to extend downward.
Reference numeral 18 is disposed at a position lower than the can body 11 and at a position higher than the hot well 13 on the ground surface 12, that is, at a height between the can body 11 and the hot well 13. A water sealing pot is shown.
[0013]
The inside of the water sealing pot 18 is open to the atmosphere, and the lower end of the atmospheric leg pipe 17 extending downward from the bottom of the can body 11 is inserted into the cooling water reservoir chamber 18a provided therein to seal the water. On the other hand, the water sealing pot 18 is connected with a drain pipe 19 for guiding the cooling water overflowing from the cooling water reservoir 18a to the hot well 13 on the ground surface 12.
[0014]
In this configuration, the steam flowing into the can body 11 from the inlet 15 is directly contacted with the cooling water supplied from the supply port 16 and flowing down from the multi-stage perforated shelf 20 into the rain in the can body 11 and condensed. On the other hand, the cooling water flows out from the bottom of the can body 11 through the atmospheric leg pipe 17 into the cooling water reservoir chamber 18 a in the water sealing pot 18, overflows from the cooling water reservoir chamber 18 and then passes through the drain pipe 19. Then, the water is drained to the hot well 13 on the ground surface 12.
[0015]
In this case, the atmospheric leg tube 17 from the bottom of the can body 11 is inserted into the cooling water reservoir chamber 18a of the water sealing pot 18 so as to be sealed with cooling water, whereby the can body The height H of the atmospheric leg with respect to 11 is the height from the cooling water surface in the water sealing pot 18, and as a result, the can body 11 is arranged at a position much higher than 10.3 m from the ground surface. In the case where it is provided, the cooling water surface in the atmospheric leg tube 17 is located at a position close to the bottom of the can body 11 regardless of the height from the ground surface 12 to the can body 11, or as shown in the figure. In addition, the bottom of the can body 11 can be positioned, so when the can body 11 is disposed at a position far higher than 10.3 m from the ground surface 12, Vibration and noise are generated in the atmospheric leg tube 17. It can be reliably reduced.
[0016]
Although the above embodiment shows the case where the hot well 13 is provided on the ground surface 12, it goes without saying that the hot well 13 may be provided by excavating the ground surface 12.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing an embodiment of the present invention.
FIG. 2 is a longitudinal front view showing a conventional configuration.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Can body 12 Ground surface 13 Hot well 14 Steam ejector 15 Steam inlet 16 Cooling water supply port 17 Atmospheric leg pipe 18 Water sealing pot 18a Cooling water reservoir 19 Drain pipe

Claims (1)

It consists of a sealed can body disposed above the ground and a hot well on the ground, and a vacuum generating source such as a steam ejector is connected to the can body, and a steam introduction port and a cooling water supply port In addition, in the barometric condenser formed by connecting an atmospheric leg pipe extending downward to the bottom of the can body,
A water-sealing pot having an open interior to the atmosphere is disposed at a height between the can body and the drain pit, and an atmospheric leg pipe from the can body is disposed in the water-sealing pot. Drainage in a barometric condenser characterized in that a drain pipe for connecting cooling water overflowing from the water sealing pot to the hot well is connected to the water sealing pot while the lower end of the water sealing pot is inserted apparatus.

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