JPH0443679Y2 - - 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.

A steam trap is a self-operated automatic valve that is attached to steam piping and automatically discharges only condensate without letting steam escape.The condensate discharged is high-temperature, high-pressure water, so it becomes hot when exposed to the outside air. to re-evaporate.

Conventional technology and its problems Steam traps include disk type, bimetal type, float type, etc. When condensation occurs, a disk type trap operates the valve to open and close the valve intermittently, but for example, a float type trap continuously opens and closes the valve from the outlet in response to the occurrence of condensate. In some cases, a so-called drip discharge occurs, and even though only condensate is normally discharged, steam rises due to re-evaporation of the condensate, which can be mistaken for a steam leak. However, there were inconveniences such as unnecessary disassembly and inspection of the steam trap, replacement of products or parts, and aesthetically undesirable results.

Therefore, the technical problem of the present invention is to obtain a steam extinguisher that eliminates the fuzzy steam generated during drip discharge.

Means for Solving the Problems The technical means of the present invention taken to solve the above technical problems is to connect a discharge pipe to the outlet of the steam trap, and connect a condensate discharge port to one end of the discharge pipe. A heat dissipating fin is provided on the outer periphery of the exhaust pipe, and constrictions and reevaporation chambers are alternately arranged inside the exhaust pipe and communicated with the exhaust port.

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

The condensate discharged from the outlet of the steam trap passes through the first stage throttling section and reaches the reevaporation chamber also in the first stage. In the process of passing through the constriction section, the static pressure of the condensate decreases, and a portion of the condensate evaporates again. The reevaporated steam spreads throughout the reevaporation chamber, and its retained heat is conducted from the inner circumferential wall of the exhaust pipe to the heat radiation fins and radiated to the atmosphere. The condensate and some of the reevaporation steam in the first stage reevaporation chamber undergo the above heat dissipation while sequentially passing through the second stage throttling section and reevaporation chamber, and the third stage throttling section and reevaporation chamber. It is then cooled and released into the atmosphere through an outlet.

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

The condensate discharged from the steam trap undergoes re-evaporation in the re-evaporation chamber and is distributed throughout the re-evaporation chamber, and the amount of heat is more quickly distributed to the heat dissipation fins than in the case of only condensate. More heat is radiated to the atmosphere. Therefore, heat dissipation efficiency is improved and steam can be extinguished with a small casing.

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

FIG. 1 shows a steam extinguisher according to the present invention connected to an outlet 10 of a steam trap 1. As shown in FIG.

A screw is provided on the outer periphery of one upper end of the discharge pipe 2 to connect it to the outlet 10 of the steam trap 1. A cover member 1 of the discharge pipe 2 is provided with a discharge port 11 at the lower end of the discharge pipe 2.
3 onto the discharge pipe 2. The secondary side of the outlet 11 is open to the atmosphere.

A plurality of heat dissipating fins 12 are provided on the outer periphery of the discharge pipe 2 in a vertically longitudinal direction and are equally spaced. Heat dissipation fin 12
may be provided integrally with the discharge pipe 2 as shown in FIG. 2, or may be attached later by welding or the like.

A first stage throttle section 4 is provided inside the discharge pipe 2 at a position closest to the outlet 10 of the steam trap 1. 1st
The discharge port 11 side of the throttle part 4 of the stage is connected to the discharge pipe 2 and the second
A first stage reevaporation chamber 5 is formed between the stage constriction part 6 and the stage constriction part 6. Thereafter, in the same way, a second stage reevaporation chamber 7, a third stage constriction section 8, and a third stage reevaporation chamber 9 are provided toward the discharge port 11, and the final reevaporation chamber 14 is located at the discharge port 11. communicate with. The constricted portion at each stage may be provided integrally with the discharge pipe 2, or may be provided separately by press-fitting or the like. In addition, the flow path cross-sectional area of the constriction part of each stage is
It is formed to become smaller as it approaches the outlet 11, and the outlet 11 is formed to have a cross-sectional area approximately the same size as the valve port 3 of the steam trap 1.

When the condensate discharged from the steam trap 1 passes through the first-stage throttle section 4, its static pressure decreases, and a portion of the condensate is re-evaporated in the first-stage reevaporation chamber 5. The re-evaporated steam spreads throughout the re-evaporation chamber 5, and its retained heat is radiated to the atmosphere through the inner peripheral wall of the exhaust pipe 2 and from the outer periphery of the exhaust pipe 2 and the heat radiation fins 12.
The condensate is cooled. The heat dissipation described above is repeated in sequence, and the cooled condensate is vigorously discharged to the atmosphere from the discharge port 11, so that no fuzzy steam rises.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a water extinguisher according to an embodiment of the present invention;
FIG. 2 is a sectional view taken along line A-A' in FIG. DESCRIPTION OF SYMBOLS 1... Steam trap, 2... Discharge pipe, 4... First stage throttle section, 5... First stage reevaporation chamber, 6...
Second stage throttle section, 7... Second stage reevaporation chamber, 11
...Exhaust port, 12...Radiation fin.

Claims (1)

[Scope of utility model registration request] A discharge pipe is connected to the outlet of the steam trap, a condensate discharge port is provided at one end of the discharge pipe to release it to the atmosphere, a heat dissipation fin is provided around the outer circumference of the discharge pipe, and a constriction part and a reevaporation chamber are installed inside the discharge pipe. A steam extinguisher with a steam trap arranged alternately and communicating with the outlet.