JPS6219886B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a separation device for separating mixed fluids.
A separation device is configured with multiple separation stages each consisting of one or more separators, and in order to increase the separation efficiency, the ratio of the mixed flow rate supplied to the separation stages to the mixed flow rate concentrated from the separation stages, that is, the cut Although the value is controlled to be a predetermined value, controlling each stage has the disadvantage of increasing costs.

SUMMARY OF THE INVENTION The present invention aims to eliminate the above-mentioned drawbacks and provide a simple, inexpensive, and practical cutting control device, in which a plurality of separation stages each having one or more separators are arranged. In the separating device, each separation stage is equipped with a feed line, a product line, and a waist line, and the waist line of the upper stage and the product line of the lower stage are combined to form the feed line of the middle stage. The present invention provides a separation device characterized in that a critical orifice or critical valve is provided in the middle of a line and a product line, and further includes a plurality of separation stages each having one or more separators arranged therein. is equipped with a feed line, a product line, and a waist line, and the upper stage waist line and the lower stage product line are combined to form a middle stage feed line.
To provide a separation device characterized in that a critical orifice or critical valve is provided midway between the waist line and the product line, and a flow resistance element is provided in a line upstream of the critical orifice or critical valve. It is something.

Next, the present invention will be explained based on a first embodiment shown in FIG.

In Fig. 1, critical orifices 5 are provided near the discharge ports of the separators 1a, 1b, and 1c of the product line P and waist line W of the separation stage 1 consisting of separators 1a, 1b, and 1c, and other has the same structure as before.

In each stage, critical orifices 5 are provided on both the product side and the waist side of the separators 1a, 1b, 1c to create critical flow conditions, so that the pressure on the downstream side does not affect the cut. Therefore, the adjustments of the cuts in each stage do not affect each other at the same time, making it possible to adjust the cuts in each stage.

FIG. 2 shows a second embodiment, in which each separator 1a, 1
A critical valve 6 is installed between the product line P and the waist line W on the downstream side from the confluence point where the respective products of b and 1c and the waist meet.
The rest of the structure is the same as that of the first embodiment, and the operation and effect are also the same as those of the first embodiment.

Furthermore, to explain based on the third embodiment shown in FIG. A critical orifice 5 is provided on the downstream side. The other structure is the same as the first embodiment,
The operation and effect are the same as those of the first embodiment, and furthermore, by inserting the flow resistance element 7, the cut in each stage can be brought close to the ideal cut to prevent mixing loss from occurring as much as possible. Even if the feed amount deviates from the rated value, it is possible to prevent the cut from shifting. In place of the critical orifice 5 of the third embodiment, a critical valve 6 may be provided downstream of the confluence of the product line P and waist line W as shown in FIG.

In addition, the embodiments shown in FIGS. 2 and 4 have a critical valve 6 and a critical orifice 5.
But either is fine.

As described above based on the embodiments, the present invention provides a critical orifice or a critical valve in the product line or waist line, and further provides a flow resistance element on the upstream side of the critical orifice or critical valve. By providing this, the cut can be brought closer to the ideal cut and the cut can be prevented from shifting even if the feed is shifted.

Therefore, if each stage in the cascade is configured with piping as shown in Fig. 3 or 4 and provided with predetermined cutting characteristics, it is possible to automatically control the cutting of the cascade as a whole. .

As described above, the present invention controls the cascade by applying self-control using only the fixed flow resistance of the piping without preparing a special flow rate adjustment device, and controls the flow rate within the cascade. It is characterized by being able to prevent unbalance and mixing loss.

[Brief explanation of the drawing]

1 to 4 are the first to fourth diagrams of the present invention.
It is a figure showing an example of. 1... Separation stage, 1a, 1b, 1c... Separator,
5...Critical orifice, 6...Critical valve, 7...Flow resistance element, f...Feed line, p...Product line, w...Waist line.

Claims (1)

[Scope of Claims] 1. A plurality of separation stages each having one or more separators arranged therein, each separation stage having a feed line, a product line, and a waist line, the waist line of the upper stage and the product line of the lower stage. 2. A separation device in which a critical orifice or a critical valve is provided midway between the waist line and the product line, the separation device being connected to form a middle-stage feed line. 2 A plurality of separation stages each having one or more separators are arranged, and each separation stage is equipped with a feed line, a product line, and a waist line, and the waist line of the upper stage and the product line of the lower stage are merged to form a middle In a separation device that is connected to form a feed line of three stages, a critical orifice or critical valve is provided midway between the waist line and the product line, and a critical orifice or critical valve is provided in the line upstream of the critical orifice or critical valve. A separation device characterized by being provided with a resistance element.