RU203511U1 - Flow meter - Google Patents

Abstract

The utility model relates to the design of ultrasonic flow meters and can, in particular, be used to measure the gas flow rate in main gas pipelines. The technical result of the utility model is to increase the convenience and simplify the maintenance of the flow meter by providing access to the sensors and cables connecting the sensors to the electronics unit, without dismantling the protective casing flaps from the tubular body of the flow meter. The flow meter contains a tubular body (1) intended for integration into the gas pipeline. Sensors (3) are mounted in through channels (2) made in the wall of the housing (1). On the housing (1) there is an electronics unit connected by cables (5) with sensors (3) and a casing of two side flaps (6) designed to protect the sensors (3) and cables (5). Each flap (6) is fixed to the body (1) with the possibility of its rotation around the common axis of the threaded fasteners (10), parallel to the longitudinal axis (9) of the body (1). Coaxial holes (11) for fastening elements (10) are made in the lower part of the end walls (8) of each flap (6). The body (1) is equipped with parts (13), in which mating coaxial holes (12) are made. 2 ill.

Description

Technology area

The utility model relates to the design of ultrasonic flow meters and can be used, for example, to measure the gas flow rate in main gas pipelines.

State of the art

Known selected as a prototype flowmeter according to patent RU 2713092 from 28.07.2016.

The prototype contains a tubular casing intended for embedding into a gas pipeline, channels in the casing wall, sensors mounted in the channels, at least one electronics unit connected by wires to the sensors, a casing of two side flaps designed to protect sensors and wires.

The disadvantage of the prototype is that during maintenance of the flow meter to gain access to the sensors and wires, it is necessary to dismantle both casing flaps from the tubular body.

The essence of the utility model

The technical result of the utility model is to improve the convenience and simplify the maintenance of the flow meter by providing access to the sensors and wires connecting the sensors to the electronics unit without dismantling the protective casing flaps from the tubular body of the flow meter.

The subject of the utility model is a flow meter containing a tubular housing intended for integration into a gas pipeline, channels in the housing wall, sensors mounted in channels, at least one electronics unit connected by cables with sensors, and a casing of two side flaps designed to protect sensors and cables, characterized in that each side flap is fixed from below on the tubular body with the ability to rotate it around a common axis of threaded fasteners parallel to the longitudinal axis of the tubular body, while in the lower part of the side walls of the flap there are coaxial holes for fasteners, and the tubular the body is equipped with parts with mating coaxial holes.

This makes it possible to obtain the specified technical result.

Parts connected to the body with mating coaxial holes can be strips, flat brackets, and threaded fasteners can be bolts with nuts, screws, studs.

Implementation of the utility model

FIG. 1 shows a photograph of the inventive flow meter, FIG. 2 his drawing. The figures show:

1 - tubular body, in the wall of which through channels 2 are made, in which sensors 3 (ultrasonic transducers) are mounted;

4 - electronics unit mounted on housing 1;

5 - cables connecting the electronics unit 4 with sensors 3;

6 - side flaps of the casing designed to protect the sensors 3 and cables 5 from atmospheric influences, dust and other contaminants.

Each flap 6 has the shape of a box with a bottom 7 and two opposite end walls 8. Flaps 6 are mounted on a tubular body 1 so that its longitudinal axis 9 is parallel to the bottom 7 of the flap and transverse to its end walls 8. When the flaps 6 are closed, they cover the sensors 3 and cables 5, and open access to them.

Each flap 6 is fixed to the body 1 from below (unlike the prototype, where the flaps of the casing are not fixed to the body, but fastened to each other) by means of a pair of threaded fasteners 10 (bolts in the figures), under which in the lower part of the end walls 8 of the flap 6 coaxial holes 11 are made. Mating holes 12 are made in parts 13 connected to the housing 1 (strips, brackets). A pair of fasteners 10 passing through holes 11 and 12 is located on a common axis that is parallel to the axis 9 of the tubular body 1. This allows, after loosening the fasteners 10 (nuts tightening the bolts), each flap 6 is opened or closed by turning it around a common axis parallel to the axis 9, without removing the fasteners 10 from the holes 11 and 12 and dismantling the flaps 6 from the body 1.

Fixation of the flaps 6 in the upper part of the housing 1 is unimportant and possible, for example, as in the prototype using clamping clamps (latches).

As threaded fasteners 10 in the claimed device can be used bolts fastened with nuts (in the absence of threads in the holes 12 strips, brackets 13), or studs with nuts or screws with screwdriver heads screwed into the threaded holes 12 strips / brackets 13 [ see, for example, https://ru.wikipedia.org/wiki/threaded_connection).

The device works as follows.

The sensors 3, which are ultrasonic transducers, together with the electronics unit 4, provide the basic functions of the flow meter associated with measuring the gas flow passing through the inner section of the tubular body 1 [see, for example, RU 2422777].

When closed, the sash 6 protects the sensors 3 and cables 5 from external influences and precipitation.

The tubular body 1 is built into the gas pipeline using flanged or welded joints.

To open the flaps 6, fastening clamps (latches) are fastened, fixing, as in the prototype, the flaps 6 from above, and the threaded fasteners of the elements 10 of both or one flap 6 from the bottom are loosened. Since the axes of the fastening elements 10 remaining in the holes 11 of the flaps in the holes 12 of the strips, brackets 13 are parallel to the axis of the housing 1 and are coaxial, each flap 6 has the ability to rotate around the common axis of the elements 10.

In this case, the shutters 6 remain connected to the housing 1 not only in the closed state (in which the sensors 3 and cables 5 are protected from external influences and there is no free access to them), but also in the open state (in which the sensors 3 and cables 5 are provided with access from the side of one or both leaves 6).

To close each flap 6, it is lifted by turning the fasteners 10 around the axis, and the fastenings on the slats / brackets 13 are tightened. Then the raised flaps 6 are pulled together with latches-clips (as in the prototype).

The possibility of free access to the sensors 3 and cables 5 connecting the sensors 3 to the electronics unit 4, without completely dismantling the shutters 6 from the tubular body 1, makes the operation of the flow meter simpler and more convenient.

Claims (1)

A flow meter containing a tubular housing intended for integration into a gas pipeline, channels in the wall of the housing, sensors mounted in channels made in the wall of the tubular housing, at least one electronics unit connected by cables to the sensors, and a casing of two side flaps intended to protect sensors and cables, characterized in that each side flap is fixed from below on the tubular body with the possibility of its rotation around the common axis of threaded fasteners parallel to the longitudinal axis of the tubular body, while in the lower part of the side walls of the flap there are coaxial holes for fasteners, and the tubular body is provided with parts with mating coaxial holes.

Images