JPH0637269Y2 - Disc type steam trap - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention relates to a disc type steam trap which is attached to a steam piping system to automatically discharge condensate generated therein.
Particularly, the present invention relates to a device which is installed in a place where a large amount of condensed water is generated so that the opening / closing valve can be operated at proper intervals.

Conventional technology Disc-type steam traps have a main body and a lid that form a variable pressure chamber inside, and an injection hole is opened in the center of the main body on the variable pressure chamber side so that the inlet and the variable pressure chamber communicate with each other. An annular groove is provided to form an inner ring valve seat between the ejection hole and the annular groove, and an outer ring valve seat concentric with the inner ring valve seat and flush with the outer periphery of the annular groove. A disk-shaped valve disk, which connects the variable pressure chamber to the outlet and is seated on and off the valve seat surface consisting of an inner ring valve seat and an outer ring valve seat, is arranged in the variable pressure chamber. The valve disc is automatically controlled by the pressure change in the variable pressure chamber to be seated on or off the valve seat surface, and the condensate is automatically discharged.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Opening of a valve disc in this disc type steam trap is performed by condensation of vapor by heat dissipation from the peripheral wall of the variable pressure chamber, but it is mounted in a place where a small amount of condensed water is generated. In this case, the valve opens even though there is not much condensate on the inlet side. Conversely, when the condensate is installed in a place with a large amount of condensed water, excessive condensate is retained on the inlet side. I had a problem.

The present invention is intended to obtain a disk-type steam trap which can be installed in a place where a large amount of condensed water is generated, and which can operate the opening / closing valve at appropriate intervals without causing excessive accumulation of condensed water.

MEANS FOR SOLVING THE PROBLEM The technical means of the present invention taken to solve the above-mentioned technical problem is to form a variable pressure chamber inside with a main body and a lid, and eject the gas into the center of the main body on the variable pressure chamber side. Make a hole to connect the inlet and the variable pressure chamber, open a groove with an end on the outside of the ejection hole that does not extend over the entire circumference, and open a discharge hole from the part where the end groove is not located to connect the variable pressure chamber to the outlet. A disk-shaped valve disc for opening and closing the ejection hole, the discharge hole, and the groove is arranged in the variable pressure chamber.

Action The action of the above technical means is as follows.

When the valve disc is closed, the end groove becomes a closed space that is shut off from the outlet side and has almost the same pressure as the variable pressure chamber. Since the valve closing force of the variable pressure chamber is balanced by the amount of this end groove, the valve disc opens earlier. Therefore, when it is installed in a place with a large amount of condensed water,
The open / close valve can be operated at appropriate intervals without excessively condensing the condensate.

Effect of the Invention The present invention has the following unique effects.

According to the present invention as described above, without condensing the condensate excessively,
Since the on-off valve operation can be performed at appropriate intervals, the efficiency of steam-using equipment can be improved. It also eliminates the risk of water hammer.

Example An example showing a specific example of the above technical means will be described (see FIG. 1).

The lid 2 is screwed to the main body 1 to form the transformer chamber 3 inside. An inlet 5 and an outlet 6 are formed in the main body 1 on substantially the same axis.

An injection hole 7 is opened in the center of the main body 1 so that the inlet 5 and the variable pressure chamber 3 can communicate with each other. A groove 9 having an end is formed outside the ejection hole 7 over the entire circumference. The discharge hole 10 is opened from the portion where the end groove 9 is not located so that the variable pressure chamber 3 can communicate with the outlet 6.

A disk-shaped valve disc 11 for opening and closing the ejection hole 7, the end groove 9 and the discharge hole 10 is arranged in the variable pressure chamber 3.

The illustrated one shows a valve closed state. The end groove 9 is a closed space that is shielded from the discharge hole 6 and has substantially the same pressure as the variable pressure chamber 3. Since the valve closing force of the variable pressure chamber 3 is balanced by the amount of the end groove 9, the valve disc 11 can be opened earlier.

[Brief description of drawings]

1 is a sectional view of a disk type steam trap according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. 1: Main body, 2: Lid 3: Transformer chamber, 5: Inlet 6: Outlet, 7: Jet hole 9: End groove, 10: Discharge hole 11: Valve disc

Claims (1)

[Scope of utility model registration request] 1. A main body and a lid form a variable pressure chamber inside, and an injection hole is opened at the center of the main body on the variable pressure chamber side so that the inlet and the variable pressure chamber communicate with each other. The end groove was opened, the discharge hole was opened from the part where the end groove was not located, and the variable pressure chamber was made to communicate with the outlet, and the disc-shaped valve disk for opening and closing the injection hole and the discharge hole and the groove was placed in the variable pressure chamber. Disc type steam trap.