JPH0443677Y2 - - Google Patents

Description

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

Steam traps are self-powered valves that are attached to steam piping and automatically discharge only condensate without letting steam escape.The condensate discharged is high-temperature, high-pressure water.
When exposed to the outside air, it reevaporates rapidly.

Conventional technology and its problems Steam traps include disk type, bimetal type, float type, etc. Disk-type traps open and close the valve intermittently and crisply, but float-type traps, for example, continuously change the degree of opening depending on the amount of inflowing condensate, and when the amount of inflowing condensate is small, they open and close in a half-open state. In some cases, condensate is continuously discharged from the outlet, so-called drip discharge. In this case, when the condensate discharge pipe is opened to the atmosphere, only condensate is normally discharged. ,
Due to the re-evaporation of condensate, steam rises up, leading to misidentification as a steam leak, unnecessary overhaul and inspection of the steam trap, replacement of products or parts, and aesthetic problems. I was told that I didn't like it, that it was an inconvenience.

Therefore, the technical problem of the present invention is to provide a steam extinguisher that eliminates the fuzzy steam produced when the steam trap drips and is discharged.

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems is to form a casing with a connecting member connected to the outlet of the steam trap and a main body having a discharge opening; A condensate reservoir is provided at the top,
A pressure-responsive member such as a piston is arranged below the condensate reservoir to form a through hole, a valve seat is formed at one end of the through hole, and a spring-biased valve body is arranged opposite the valve seat. A stepped portion having a smaller diameter than the outer diameter of the valve body is provided on the inner periphery of the main body below the body, and a reversal spring and a return spring are arranged in series below the pressure responsive member.

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

During drip discharge, condensate is discharged from the steam trap and accumulates in the condensate reservoir. When the accumulation amount is small, the pressure in the condensate accumulation section is low, the pressure-responsive member does not move due to the spring force of the reversing spring, and the valve seat provided in the pressure-responsive member is closed by the spring-biased valve body. It is. As the amount of accumulated water gradually increases, the pressure in the condensate accumulation section gradually increases. As it rises, the pressure responsive member moves downward while compressing the reversal spring, but the valve body also remains biased toward the valve seat by the spring, keeping the valve closed. Therefore, no fuzzy steam is generated. As the pressure in the condensate reservoir increases, the pressure-responsive member moves, but the valve body hits a stepped portion on the inner periphery of the main body and cannot move any further. When the pressure-responsive member further moves, the reversing spring reverses and the valve opens instantaneously, instantly discharging the condensate accumulated in the reservoir. When the discharge is completed and the pressure in the reservoir decreases,
The reversing spring is reversed to its original shape by the return spring, and the pressure-responsive member is also returned to its original position, causing the valve body to close the valve seat and close the valve. Therefore, it becomes a crisp opening/closing valve similar to a disk-type trap, and there is no longer any dripping or fuzzy steam.

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

The steam extinguisher of the present invention accumulates the dripping discharge until the pressure rises to a certain level and then discharges it, so it can operate intermittently with crispness, and can expel the fuzzy steam.

Embodiment An embodiment illustrating a specific example of the above technical means will be described (see FIGS. 1 and 2).

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

The connecting member 1 is connected to the outlet 12 of the steam trap 10 by providing a through hole in the center and a screw on the outer periphery of the upper end. The outer periphery of the lower end is provided with a threaded portion that connects with the main body 2, and the inner periphery of the lower end is provided with a stepped portion on which one end of the valve body biasing spring 8 is disposed.

The main body 2 has both ends open, and is connected to the connecting member 1 by providing a screw on the inner periphery of the upper end to form a casing. A condensate reservoir 13 is formed in the upper part of the casing. A valve body 3 is disposed below the condensate reservoir 13, facing the valve seat 11 and biased by a valve body biasing spring 8. The valve body 3 is a disc-shaped valve provided with a plurality of guide legs 9, as shown in FIG. A stepped portion 14 having a smaller diameter than the outer diameter of the valve body 3 is provided on the inner circumference of the main body 2 at the lower part of the valve body 3.
is provided as a stopper for the valve body 3.

The valve seat 11 is integrally provided at the upper end of a pressure responsive member 4 such as a piston having an O-ring 6 provided on its outer periphery.
The opening of the valve seat 11 is provided to penetrate the pressure responsive member 4.

A reversing spring 5 having an annular shape and a trapezoidal cross section and a return spring 7 of the reversing spring 5 are arranged in series along the inner circumferential wall of the main body 2 at the lower part of the pressure responsive member 4 to gently bias the pressure responsive member 4. Place it in the state.

A plurality of fins (not shown) may be provided around the outer periphery of the condensate reservoir 13 to promote cooling of the condensate in the reservoir, thereby further reducing the steam of the condensate discharged from the steam extinguisher.

During drip discharge, condensate flows from the steam trap 10 into the condensate reservoir 13 and accumulates therein. When the amount of accumulation is small, the pressure is low, and the pressure responsive member 4 does not move due to the spring force of the reversing spring 5, and the valve seat 11 is moved by the valve body biasing spring 8.
It is closed by the valve body 3 which is energized by . When the amount of accumulation gradually increases and the pressure in the condensate accumulation section 13 gradually increases, the pressure responsive member 4 compresses the reversal spring 5 downward while the valve seat 11 is closed by the valve element biasing spring 8. Moving. When the pressure further increases and the pressure responsive member 4 moves, the valve body 3 moves to the stepped portion 14 of the main body 2.
When this occurs, the valve stops moving downward any further and the reversing spring 5 reverses to open the valve instantaneously, and the condensate is vigorously discharged from the lower end opening 15 of the main body 2. When the discharge is completed, the reversing spring 5 is reversed to its original shape by the return spring 7, the pressure responsive member 4 is also returned, and the valve body 3 closes the valve seat 11 to close the valve.

By repeatedly operating the above-mentioned on-off valve and discharging condensate, the valve becomes a crisp intermittent on-off valve, eliminating the fuzzy steam caused by drip discharge.

[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 plan view of the valve body. 1... Connecting member, 2... Main body, 3... Valve body, 4
. . . Pressure response member, 5 . . . Reversing spring, 8 . . . Valve body biasing spring, 10 .

Claims (1)

[Scope of utility model registration request] A casing is formed by a connecting member connected to the outlet of the steam trap and a main body having a discharge opening, a condensate reservoir is provided in the upper part of the casing, a pressure-responsive member such as a piston is arranged below the condensate reservoir, and a through hole is formed. a valve seat is formed at one end of the through hole, a spring-biased valve body is disposed opposite to the valve seat, and a stepped portion having a smaller diameter than the outer diameter of the valve body is provided on the inner periphery of the main body below the valve body; A steam trap steam extinguisher with a reversal spring and a return spring arranged in series at the bottom of the pressure-responsive member.