JP2001200990A - Orifice switching type condensate discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a condensate discharge device solving shortness of the usual service life in the condensate discharge device, securing maintainability and energy-saving performance, usable without investigation before installation and capable of using orifices in a wide flow rate range. SOLUTION: This condensate discharge device is composed of a body 1 having narrow passages 2a, 3a, an orifice plate 5 having a pair or more orifices 7a, 7b and 8a, 8b and 9a, 9b different in the opening cross-sectional area arranged so as to form a passage by selecting a pair of outlet side orifices in the narrow passages 2a, 3a, a bolt 6 for fixing the orifice plate 5 to the body 1 and a cover so that an optimal orifice can be easily selected at a wide condensate flow rate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condensate discharge device for discharging condensate generated when steam loses latent heat due to heat transfer or the like and condensate generated when dehumidifying air.

[0002]

2. Description of the Related Art In the case of condensate discharge technology, there are various types of conventional condensate discharge devices, such as a disk type, a bucket type, and a float type, all of which have an operating portion in contact with a fluid and are frequently operated. It is. In addition, the operating conditions are high temperature (excluding the case of air dehumidification), high pressure and high flow rate, the period of normal operation is short, and repair and replacement are required in a short time. Because of this, discs, buckets,
A technology that eliminates a discharge mechanism having an operating portion such as a float and discharges only with a main body and an orifice has begun to be adopted. However, a discharge device using only an orifice has a narrow usable range because there is no control mechanism such as a bucket. For this reason, before installation, it is necessary to investigate the expected flow rate of the condensate, and design and manufacture an orifice having a discharge capacity corresponding to the flow rate. However, if the condensate flow rate is still different from the expected or fluctuated, it will result in insufficient capacity or loss of steam, and it will be necessary to replace the orifice with a compatible capacity or to make a new one. is there.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the conventional type and the orifice type in the condensate discharge device. Another object of the present invention is to provide a condensate discharge device which can easily select and change an orifice having an optimum sectional area only by rotating an orifice plate.

[0004]

SUMMARY OF THE INVENTION The present invention is a condensed liquid discharging device, and is configured as follows to solve the above-mentioned technical problem. That is, the condensate discharge device of the present invention is attached to a device for generating condensate, and the flow passage for discharging the condensate is formed by narrowing a part of the inlet / outlet portions (2) and (3). Body (1) having 2a) and (3a)
And a lid (4), an orifice plate (5) provided in the main body, and bolts (6) for fixing the orifice plate to the main body (1). The orifice plate has a pair of orifices ( 7a, 7b etc.) are provided in plural pairs, and the narrow entrance / exit flow path portion (2a) of the main body (1) is provided.
In (3a), only one pair of orifices is selected and arranged to form a flow path.
Hereinafter, each component requirement will be described.

[0005]

[Main body] The main body (1) is attached to a device for generating condensed liquid. Installation of the main body (1) to the condensate generation device
Various means such as a screw type, a flange type or a welding type can be adopted. In the main body (1), a narrow flow path (2) connected to the flow paths (2) and (3) for introducing and discharging the condensate, respectively.
a) and (3a), and a part for installing and fixing the orifice plate (5) and a part for attaching a lid for attaching and detaching the orifice plate.

[0006]

[Orifice Plate] The orifice plate to be attached to the main body (1) has a plurality of orifices having different cross-sectional areas. By changing the mounting position, a pair of orifices having different cross-sectional areas can be connected to the narrow entrance / exit passage of the main body (1). (2
a) It is arranged so as to conform to (3a) and form a flow path. In this figure, three pairs of orifices are illustrated.
The number of pairs may be two or more, or four or more. Having more pairs, of course, enhances convenience because a suitable orifice can be selected over a wide condensate flow range. Also, the cross-sectional areas of the paired orifices do not necessarily have to be the same.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS When the present invention is mounted on a condensate generator, it is selected from narrow channels (2) and (3) of a main body (1) and orifices provided in an orifice plate (5). The pair of orifices (7a and 7b in FIG. 4) form a flow path through which the condensate flows. Orifices selected for condensate flow (7a and 7b)
When the cross-sectional area is small, the condensed liquid is not completely discharged and accumulates at the inlet side. In this case, a phenomenon occurs in which the inlet temperature decreases and heat transfer is not sufficiently performed. If such a phenomenon is detected,
By rotating the orifice plate, a pair of orifices (6a and 6b) having a large cross-sectional area is selected. Conversely, if the cross-sectional area of the orifice is too large, the condensate is completely discharged, but the vapor having latent heat itself leaks downstream, resulting in energy loss. When such a phenomenon is detected, the orifice plate is similarly rotated to select a pair of orifices (8a and 8b) having a small sectional area. If a large number of pairs of orifices having different cross-sectional areas are prepared in the orifice plate (5), a wide flow rate range can be handled. When the selection of the orifice is completed, the orifice plate (5) is firmly fixed to the main body (1) with the bolt (6). A nut may be used instead of the bolt (6). The orifice may be selected by removing the bolt (6) and rotating the orifice plate (5) from the outside with a handle penetrating the lid (4).

[0008]

As described in the previous section, the most suitable orifice pair can be easily selected from a plurality of prepared orifice pairs with a simple operation, so that the condensed liquid generator can be used smoothly. In addition, it is possible to prevent useless steam from leaking downstream. In general, the discharge capacity of the orifice is almost proportional to the cross-sectional area.If a number of orifices with different cross-sectional areas are provided on the ball, a wide range of operating conditions can be met. This eliminates the need to design and manufacture the orifice each time. Further, it is possible to easily cope with a change in use conditions after installation. In addition, there is the advantage of the orifice type, which is hard to break down because there is no operating part such as the disk type, bucket type, float type, etc.
A high energy saving effect can be brought about by maintaining the initial performance for a long period of time.

[Brief description of the drawings]

FIG. 1 Cross-sectional view

FIG. 2 is a side view seen from the left side.

FIG. 3 is a front view

FIG. 4 AA arrow view

FIG. 5 is a view taken in the direction of arrows BB.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Channel inlet 2a Narrow channel inlet 3 Channel outlet 3a Narrow channel outlet 4 Lid 5 Orifice plate 6 Bolt 7a, 7b, 8a, 8b, 9a, 9b Orifice

Claims (1)

[Claims] An apparatus attached to an apparatus for generating a condensed liquid, wherein a flow path for introducing and discharging the condensed liquid is provided.
A body (1) having portions (2a) and (3a) in which a part of a flow path is narrowed, a lid (4), and an orifice plate (5) having a plurality of holes having different cross-sectional areas, that is, orifices;
An orifice plate (5) having a plurality of orifices (6a and 6b, 7a and 7b, 8a and 8b) provided at positions where one can be selected in the main body flow paths (2a) and (3a). And a bolt (6) for fixing the orifice plate (5) to the main body (1).