JP2012127419A - Steam trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a steam trap capable of preventing staying of condensed water on the steam using device side.SOLUTION: A liquid tank 6 is connected to the upstream side of the inlet 4 of a steam trap 1 via a pipe 25. A condensed water flow-in pipe 8 is connected to the upper part of the liquid tank 6. A temperature adjustment valve 7 is connected to the lower part of the liquid tank 6 via a pipe line 9. The temperature adjustment valve 7 to the inside of which a temperature sensitive element such as a bimetal or a liquid-sealed bellows is attached, is automatically opened when the temperature of a flowing-in condensed water drops to a predetermined value. A liquid discharge pipe line 17 is connected to the outlet 5 of the steam trap 1. When the steam trap 1 fails to be unable to discharge liquid from the outlet 5, the condensed water flowing-in from the condensed water flow-in pipe 8 stays in the liquid tank 6, and the condensed water drops to a predetermined temperature by heat dissipation, the temperature adjustment valve 7 is automatically opened, and thus the condensed water in the liquid tank 6 is discharged to the outside of the system.

Description

The present invention relates to a steam trap that automatically discharges condensate generated in a steam piping system using a float.

A conventional steam trap is disclosed in Patent Document 1, for example. This is because the casing forms an inlet, a valve chamber, and an outlet, a valve seat that opens a valve port that connects the valve chamber and the outlet is formed in the lower portion of the valve chamber, a float is accommodated in the valve chamber, Float that rises and falls according to the position directly or drains condensate automatically by opening and closing the valve body by opening / closing the valve seat through the lever. An orifice that is formed in an opening area where the condensate generated during the air supply of the system cannot be discharged and communicates between the valve chamber and the outlet is formed separately from the valve port.

Japanese Patent Laid-Open No. 10-141593

In the conventional steam trap, when the steam trap itself fails and it becomes impossible to discharge the condensate from the outlet, the condensate stays on the upstream side of the inlet, that is, the steam using device side. There was a problem that adversely affected.

Therefore, the problem to be solved by the present invention is to provide a steam trap capable of preventing the condensate from staying on the steam using device side.

In order to solve the above problems, the present invention forms an inlet, a valve chamber, and an outlet in a casing, and forms a valve seat that opens a valve port that communicates the valve chamber and the outlet at a lower portion of the valve chamber. Float is stored in the valve chamber, and the float that rises and falls according to the liquid level in the valve chamber directly or condensates automatically by opening and closing the valve port by opening and closing the valve body through the lever. In this case, a liquid tank that temporarily stores liquid is connected to the upstream side of the inlet, and a temperature adjustment valve that automatically opens when the temperature of the liquid drops to a predetermined value is connected to the liquid tank. It is attached.

According to the present invention, a liquid tank for temporarily storing liquid is connected to the upstream side of the inlet, and a temperature control valve is attached to the liquid tank, so that a steam trap breaks down and condensate is discharged from the outlet. When condensate cannot be collected, the condensate is stored in the liquid tank, and when the condensate temperature drops to a predetermined value due to heat radiation, the temperature adjustment valve automatically opens and discharges the condensate out of the system. There is an excellent effect that condensate can be prevented from staying on the use device side.

It is a block diagram of the steam trap concerning embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIG. The vapor trap 1 of the present embodiment includes an inlet 4 and an outlet 5 formed in a sealed container, a liquid tank 6 disposed on the upstream side of the inlet 4, and a temperature adjustment valve 7 connected to the liquid tank 6. Constitute.

A condensate inflow pipe 8 connected to a vapor using device (not shown) is attached to the upper part of the liquid tank 6. Condensate generated in the steam using device flows into the liquid tank 6 from the condensate inflow pipe 8. A temperature control valve 7 is attached to the lower part of the liquid tank 6 via a pipe 9. Although not shown in the figure, the temperature regulating valve 7 is provided with a temperature sensing element such as a bimetal or a liquid seal bellows, and can be automatically opened when the temperature of the incoming condensate drops to a predetermined value. is there.

The inlet 4 of the vapor trap 1 is connected to the liquid tank 6. A liquid discharge line 17 is connected to the outlet 5 of the vapor trap 1. When the float (not shown) disposed in the steam trap 1 is located in the lower part, the steam trap 1 closes the valve port to prevent the condensate and the steam from being discharged to the outlet 5 side, and the condensate in the steam trap 1 When the water further flows in and the float is located at the upper part, the valve opening is opened and the condensate is discharged from the outlet 5 side to the liquid discharge pipe 17.

When the steam trap 1 breaks down and the condensate cannot be discharged from the outlet 5, the condensate stays in the upstream side of the inlet 4, that is, in the liquid tank 6. The temperature regulating valve 7 is automatically opened, and the condensate can be discharged out of the system.

 INDUSTRIAL APPLICABILITY The present invention can be used as a steam trap that can reliably discharge the condensate generated in various steam using devices out of the system.

1 Steam trap 4 Inlet 5 Outlet 6 Liquid tank 7 Temperature control valve 8 Condensate inflow pipe 17 Liquid discharge pipe

Claims (1)

The casing forms an inlet, a valve chamber, and an outlet. A valve seat that opens the valve port that connects the valve chamber and the outlet is formed in the lower portion of the valve chamber. A float is accommodated in the valve chamber, depending on the liquid level in the valve chamber. When the float that rises and falls directly, or the valve body opens and closes through the lever and opens and closes the valve port, the condensate is automatically discharged out of the system. A vapor trap, wherein a liquid tank for temporarily storing liquid is connected to the liquid tank, and a temperature regulating valve is attached to the liquid tank automatically when the liquid temperature falls to a predetermined value.

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