RU129628U1 - FLOW PREPARATION DEVICE - Google Patents

Abstract

1. A flow preparation device comprising a perforated disk and a straightener arranged in series in a pipeline in front of the flowmeter, characterized in that the perforated disk and a straightener are spaced relative to each other to form an intermediate stilling chamber. The device according to claim 1, characterized in that the straightener is made tubular. The device according to claim 1, characterized in that the jet straightener is made lamellar. The device according to claim 1, characterized in that the perforated disk and the jet straightener are rigidly bonded to each other using a sleeve.

Description

The utility model relates to measuring technique, namely, to flow preparation devices (UPP), designed to eliminate twisting and asymmetry of the flow of liquid or gas in the pipeline in front of the flowmeter.

Known devices for preparing a stream in the form of a perforated disk (SCP “NEL (Spearman)”), a tubular jet straightener (UPP “Gallagher”) or plate jet straightener (UPP “AMSA”) installed in the pipeline before the flow meter [GOST 8.586.1-2005. State system for ensuring the uniformity of measurements. Measurement of the flow rate and amount of liquids and gases using standard constricting devices. Part 1. The principle of the measurement method and general requirements, Fig. E7, Fig. E1 and Fig. E2, respectively].

Closest to the claimed device is a device for preparing the stream, selected as a prototype, containing a perforated disk and a straightener installed sequentially in the pipeline in front of the flow meter in close proximity to each other [GOST 8.586.1-2005 State system for ensuring the uniformity of measurements. Measurement of the flow rate and amount of liquids and gases using standard constricting devices. Part 1. The principle of the measurement method and general requirements, Fig. E9].

A disadvantage of the known device is the low efficiency of the alignment of the twisting and asymmetry of the flow of liquid or gas in the pipeline before the flow meter.

The technical problem addressed by the claimed utility model is to increase the alignment efficiency of twisting and asymmetry of the liquid or gas flow in the pipeline in front of the flowmeter, and in general to improve the accuracy of flow measurement.

This goal is achieved by the fact that in the flow preparation device containing a perforated disk and a straightener arranged sequentially in the pipeline in front of the flowmeter, according to a utility model, the perforated disk and a straightener are spaced relative to each other with the formation of an intermediate stilling chamber.

In this case, the jet straightener can be made tubular or lamellar.

To increase the ease of installation, the perforated disk and the jet straightener are rigidly fastened together by means of a sleeve.

The utility model is illustrated by drawings: Figure 1 - General view of the device for preparing the stream; Figure 2 is a view A of Figure 1 (perforated disk, front view); Figure 3 - view B Figure 1 (tubular variant of the straightener, front view); Figure 4 - view B Figure 1 (lamellar version of the straightener, front view); 5 is a General view of the device for the preparation of the flow with a rigid mount of the perforated disk and the jet eliminator using a sleeve.

The list of positions and designations in the drawings:

1 - perforated disk;

2 - jet straightener;

3 - pipeline;

4 - sedative chamber;

5 - sleeve;

D is the interval between the perforated disk 1 and the jet eliminator 2.

The flow preparation device comprises a perforated disk 1 and a flow straightener 2 mounted sequentially in the pipe 3 in front of the flow meter (not shown) with an interval Δ relative to each other with the formation of an intermediate stilling chamber 4. The flow straightener 2 can be made tubular (Figure 3) or lamellar ( Figure 4). The perforated disk 1 and the jet straightener 2 can be located separately in the pipeline 3 (Fig. 1) or rigidly fastened together by means of a sleeve 5 by welding (Fig. 5).

The operation of the device is as follows.

A turbulent flow of liquid (gas) initially passes through the perforated disk 1 and loses the peripheral speed, after which it enters the stilling chamber 4, in which its asymmetry is balanced. Next, the calmed flow passes through the channels of the jet straightener 2 and in the form of laminated jets enters the pipe 3 towards the flow meter (not shown).

Using the utility model provides an increase in the efficiency of equalizing the flow in the pipeline in front of the flowmeter, which increases the accuracy of flow measurement, allows you to bring the device for preparing the flow to the flowmeter and thereby reduce the length of the pipeline.

Claims (4)

1. A device for preparing a stream containing a perforated disk and a straightener installed in series in the pipeline in front of the flowmeter, characterized in that the perforated disk and a straightener are spaced relative to each other with the formation of an intermediate stilling chamber. 2. The device according to claim 1, characterized in that the straightener is made tubular. 3. The device according to claim 1, characterized in that the jet straightener is made lamellar. 4. The device according to claim 1, characterized in that the perforated disk and the jet eliminator are rigidly bonded to each other using a sleeve.

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