JPH0135029Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a steam extinguisher installed at the outlet of a steam trap to extinguish steam caused by re-evaporation of discharged condensate.

Since the condensate discharged from the steam trap is high-temperature, high-pressure water, it is actively re-evaporated when released into the outside air.
Therefore, surrounding equipment and piping become damp and rust or break down. In addition, the steam rising up in the winter is noticeable and is not aesthetically pleasing.

Conventional technology Conventionally, a long drain pipe was connected to the outlet of the steam trap, and the discharged condensate was cooled while flowing through the drain pipe, condensing the re-evaporated steam and preventing it from forming steam. .

To explain this with reference to FIG. 2, a down pipe 82 is connected to the outlet of the steam trap 80,
It was lowered to a drain pit 84, and horizontal pipes 86 and 87 were connected back and forth into the drain pit 84 using pipe joints (elbows, etc.). The total length of the drain pipe is usually around 2 meters. Since the steam trap 80 is placed at the bottom of the steam pipe, the distance from the steam trap to the ground is short, and the drain pipe is generally winding as described above.

This is because the high-temperature condensate discharged from the steam trap 80 is cooled by outside air or low-temperature water in the drain pit 84 while passing through a long drain pipe, and the re-evaporated steam is condensed to prevent steam from rising. It is intended to do so.

Problems to be Solved by the Present Invention In this conventional method, not only the drain pipe becomes long and the material cost increases, but also the part immersed in the drain pit corrodes quickly, resulting in high maintenance costs.

The technical problem of the present invention is to develop a water extinguisher with good cooling efficiency and low production cost.

Means for Solving the Problems The technical measures of the present invention taken to solve the above technical problems are as follows: (1) Shortening the main drainage pipe connected to the outlet of the steam trap; (2) Providing heat radiation pipes around the main drainage pipe. (c) The inlet of the radiator pipe is opened into the inlet of the main drain pipe so that part of the wastewater flowing into the main drain pipe also flows into the radiator pipe.

Effect The operation of the above technical means is as follows.

High-temperature condensate from the steam system is partially re-evaporated from the steam trap and discharged to the main drainage pipe. A portion of this high-temperature waste water and re-evaporated steam flows down the main drainage pipe, and the rest flows down the heat radiation pipe, or is both dumped into the drainage pit.

The main drainage pipe is at most a short one, from the steam trap to the drainage pit on the ground, but some of the wastewater flows through the radiator pipe, so the amount of wastewater that flows through this is small, and by the time it reaches the outlet it is sufficiently cooled and the steam is removed. disappears.

Since the heat dissipation pipe is a long pipe wrapped around the outer circumference of the main drainage pipe, the waste water is sufficiently cooled while passing through it.

Since the outlet of the main drainage pipe is open to the outside air, air enters inside and is cooled. Therefore, the heat dissipation tube wrapped around the outer periphery is also cooled not only from the outside but also from the inside through the main drainage pipe.

Therefore, it has a large effect of cooling waste water and can be made with relatively short pipe material. In addition, since it is not immersed in drainage water, it has less corrosion and has a long life.

Effect of invention The present invention produces the following specific effects.

Conventionally, a long drain pipe had to be installed in a winding manner at the outlet of the steam trap, but in the present invention, the inlet of the main drain pipe only needs to be connected to the outlet of the steam trap by providing, for example, a screw.

Generally, this steam extinguisher is installed at the outlet of the steam trap so that the air around its outer periphery is warmed and becomes an upward air current, which actively cools the heat radiation pipes. Therefore, from this point of view as well, the cooling effect is greater than the conventional method of running the drain pipe horizontally.

With the conventional type where the drain pipe is submerged in the water in the drain pit, the water in the drain pit is blown up every time the steam trap drains, which is dangerous, but the steam extinguisher of this invention uses the water in the drain pit to cool the water. There is no such inconvenience because it is not done.

Embodiment An embodiment illustrating a specific example of the above technical means will be described (see FIG. 1).

FIG. 1 shows the steam extinguisher according to the present invention connected to the outlet 12 of the steam trap 10.

The main drain pipe 14 is made of carbon steel pipe (SGP) for piping, and a screw is provided on the outer periphery of the inlet 16 at the upper end to connect to the inlet 12 of the steam trap. Lower end outlet 18
remains open.

A heat dissipation pipe 20 is spirally wound around the outer periphery of the main drainage pipe 14. The heat dissipation tube 20 is made of a copper tube with good heat conduction.
The inlet 22 at the upper end penetrates the peripheral wall of the main drain pipe 14 and is inserted into the inlet 16 of the main drain pipe to easily receive the waste water from the steam trap 10.
Turn the opening upward and spread the opening edge outward. The opening edge is placed a little apart from the inner wall of the main drain pipe 14 so that more of the waste water from the steam trap flows into the heat radiation pipe 20 with better cooling efficiency than into the main drain pipe 14.

The outlet 24 at the lower end of the heat dissipation pipe 20 penetrates the peripheral wall of the main drainage pipe 14 and is inserted into the outlet 18 of the main drainage pipe, with the opening facing downward.

In the embodiment shown in FIG. 1, the heat dissipation pipe 20 is made into a single layer, but the heat dissipation tube 20 is not limited to this, and may be wrapped around the main drain pipe 14 in multiple layers. In addition, the outlet 24 of the heat dissipation pipe 20 is not inserted into the outlet 18 of the main drainage pipe, but the opening is only directed downward on the outside of the surrounding wall,
The outlet 18 opening may be made easier for outside air to enter without narrowing it.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a water extinguisher according to an embodiment of the present invention;
FIG. 2 is a piping diagram of a conventional steam trap drain pipe. 10: Steam trap, 14: Drainage main pipe, 16:
Inlet of main drainage pipe, 20: Heat radiation pipe, 22: Inlet of heat radiation pipe.

Claims (1)

[Scope of utility model registration request] Shorten the main drainage pipe connected to the outlet of the steam trap, wrap a heat radiation pipe around the main drainage pipe, and connect the inlet of the heat radiation pipe to the main drainage pipe so that some of the wastewater flowing into the main drainage pipe also flows into the heat radiation pipe. A steam-trap steam extinguisher that opens into the inlet of a steam trap.