JP2009097561A - Vapor eliminator of steam trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vapor eliminator of a steam trap capable of effectively utilizing re-evaporated steam of a condensate discharged from the steam trap without disposal. <P>SOLUTION: A venturi pipe 4 is connected to a steam pipe 2. A branch pipe 5 branching off the steam pipe 2 is connected to the inlet side of the steam trap 1. A communicating tube 3 and a condensate reservoir 6 are connected to the outlet side of the steam trap 1. The condensate reservoirs 6 and a throat part 7 of the venturi pipe 4 are connected by a connecting pipe 8. A throttle valve 9 as a throttle part and a condensate discharge pipe 10 are connected to the condensate discharge side of the condensate reservoirstor 6. The condensate discharged from the steam trap 1 is re-evaporated by the condensate reservoir 6 to become the re-evaporated steam, and is sucked to the throat part 7 of the venturi pipe 4, and is supplied to a separate steam use place from a steam supply pipe 11, and is effectively utilized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

 The present invention relates to a steam trap water heater that reduces the re-evaporated steam generated when the high-temperature condensate discharged from the steam trap is re-evaporated in the atmosphere.

  A steam trap is a type of automatic valve that automatically discharges only condensate as condensed water generated in a steam pipe to the outside, but does not discharge steam to the outside. When the steam trap discharges the condensate, the discharged condensate is normally in a high temperature state, so when the condensate is discharged into the atmosphere, it re-evaporates, and the re-evaporated re-evaporated steam becomes moyamoya. In many cases, it was misunderstood that it was exhausting steam that was not originally discharged. In order to eliminate such cases, steam trap water heaters have been used.

In the conventional water heater, since the re-evaporated steam is mixed with the cooling fluid and discharged out of the system, the re-evaporated steam cannot be effectively used.
Japanese Patent Laid-Open No. 2005-121064

 The problem to be solved is to provide a steam trap water heater capable of effectively utilizing the re-evaporated steam of the condensate discharged from the steam trap without being discarded.

 The present invention is attached to the outlet side of the steam trap to reduce the re-evaporated steam of the condensed water discharged from the steam trap. The drive fluid supply pipe is connected to the venturi pipe and a throttle portion is formed on the condensate discharge side of the communication pipe.

 The steam trap water heater of the present invention is driven to the venturi pipe by connecting the throat portion of the venturi pipe to the outlet side of the steam trap via the communication pipe and connecting the drive fluid supply pipe to the venturi pipe. Effective supply of re-evaporated steam is achieved by generating a suction force at the throat when fluid is supplied, and sucking the re-evaporated vapor generated inside the communication pipe into the throat and supplying it to a separate steam utilization location. Can be planned.

 The present invention is such that the venturi tube throat is connected to the outlet side of the steam trap via a communication pipe. By forming a condensate reservoir in a part of the communication pipe, re-evaporation from the condensate is performed. The amount of steam can be increased.

 FIG. 1 is a configuration diagram of Embodiment 1 of the present invention, in which a steam pipe 2 through which high-temperature and high-pressure steam flows from the left side to the right side, a steam trap 1 connected to a branch pipe 5 branched from the steam pipe 2, and steam The steam trap is composed of the communication pipe 3 communicating with the outlet side of the trap 1, the condensate reservoir 6 constituting a part of the communication pipe 3, and the venturi pipe 4 connected to the upper part of the condensate reservoir 6. Configure the vessel.

 Condensate generated by heat radiation inside the steam pipe 2 flows into the steam trap 1 through the branch pipe 5. A communication pipe 3 is connected to the outlet side of the steam trap 1. In the present embodiment, the communication pipe 3 is connected to a condensate reservoir 6 having a diameter larger than that of the communication pipe 3 in the middle. A throttle that can be connected to the throat portion 7 of the venturi tube 4 via the connecting pipe 8 at the upper portion of the condensate reservoir 6 and the passage area can be adjusted at the lower portion of the condensate reservoir portion 6, that is, the condensate discharge side. A condensate discharge pipe 10 is connected via a throttle valve 9 as a part.

 A high-temperature and high-pressure steam pipe 2 serving as a driving fluid supply pipe is connected to the inlet side of the venturi pipe 4, while the re-evaporated steam and the high-temperature and high-pressure steam mixed in the throat 6 are connected to the outlet side of the venturi pipe 4. A steam supply pipe 11 for supplying the mixed steam to a separate steam use location is connected.

 Of the mixed fluid of condensate and steam flowing down to the steam trap 1, only the condensate is discharged from the steam trap 1 and flows into the condensate reservoir 6 through the communication pipe 3. More condensate is collected in the condensate reservoir 6 by restricting the passage area by the throttle valve 9 attached to the lower part of the condensate reservoir 6. Since the condensate collected in the condensate reservoir 6 is still in a high temperature state, it is actively re-evaporated and becomes re-evaporated steam. The low-temperature condensate that has not become re-evaporated steam is discharged out of the system through the throttle valve 9 and the condensate discharge pipe 10.

  On the other hand, in the throat portion 7 of the venturi tube 4, the suction force becomes stronger as the speed of the fluid flowing down in accordance with Bernoulli's theorem. Therefore, a large suction force is generated by flowing down high-temperature and high-pressure high-speed steam. Thus, the re-evaporated vapor generated in the condensate reservoir 6 can be reliably sucked.

  The re-evaporated steam mixed with the high-temperature and high-pressure steam in the venturi pipe 4 is supplied from the steam supply pipe 11 to a separate steam use location (not shown) for effective use.

The block diagram which shows the Example of the water heater of the steam trap which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steam trap 2 Steam pipe 3 Communication pipe 4 Venturi pipe 5 Branch pipe 6 Condensate reservoir part 7 Throat part 8 Connection pipe 9 Throttle valve 10 Condensate discharge pipe 11 Steam supply pipe

Claims (1)

Attached to the outlet side of the steam trap to reduce the re-evaporated steam of the condensed water discharged from the steam trap, connect the throat part of the venturi pipe to the communication pipe communicating with the outlet of the steam trap, A steam trap water heater comprising a drive fluid supply pipe connected to the venturi pipe and a throttle portion formed on the condensate discharge side of the communication pipe.

Images