RU200763U1 - Pressure indicator - Google Patents

Abstract

The utility model relates to measuring technology and can be used in systems for visual monitoring of medium pressure. The pressure indicator contains a housing, a chamber, an elastic element with an axial displacement element, a reading device with a scale and two marks. The reading device is made in the form of a threaded screw-nut pair. One of the marks is fixed on the element of axial displacement, and the other - on the nut of the reading device, with the possibility of matching them by turning the screw for visual control of the medium pressure. The technical result is to expand the arsenal of technical means for visual monitoring of the pressure of the medium. 1 ill.

Description

The utility model relates to measuring technology, namely to devices for converting and indicating pressure.

Known is a pressure difference detector containing optical fibers, two chambers for receiving measured pressures, elastic elements coaxially fixed in the chambers, a rod located inside the body element and rigidly fixed between the centers of the elastic elements. A reflective surface is formed in the central part of the stem. The axes of the optical fibers are perpendicular to the reflecting surface, and the extensions of the axes of these fibers intersect its left and right boundaries, and the directions of the displacements of the reflecting surface coincide with the axis of each of the elastic elements. Patent of the Russian Federation for invention No. 2547896, IPC G01L 11/02, 10.04.2015.

The device can be used in pressure control systems, however, it requires volatile equipment - a source and receiver of the luminous flux, as well as software processing of the conversion result, which limits its scope.

Known pressure transducers, such as "Pressure relay RDK-3" and "RKS-1-OM5-01-1", containing bellows elastic elements placed in the housing, levers, movable and stationary contacts, an anchor, fixed on the axis. LLC "NEVA-Kip" - measuring devices (instrumentation) and spare parts for the marine (spare parts), railway and industrial directions. [Electronic resource] - Access mode: http://nevakip.ru/rele-davleniya-rdk-3; Melnichenko Y.D. Refrigeration equipment for cars and air conditioning: Methodological guidelines. - Khabarovsk: FVGUPS, 1997 .-- 22 p.

For the functioning of these devices, it is necessary to switch electrical circuits, and to process the electrical signal obtained as a result of pressure conversion, which in some cases can also impose restrictions on their area of application.

Known optical pressure indicator containing chambers for receiving pressures, an axial displacement element with a reflective indicator and a reflective coating, a fiber-optic module with optical fibers and a reading device with a scale for visual control of liquid or gas pressure. Patent of the Russian Federation for a utility model No. 140216, IPC G01L 11/02, 10.05.2014. This technical solution was adopted as a prototype.

Due to the absence of electrical components, as well as information processing and analysis devices, in the utility model, the measurement process based on a visual assessment of the pressure level of the medium is non-volatile. However, the need to use complex technological operations in the process of forming a strictly ordered distribution of optical fibers in an optical fiber module, which requires special production equipment, limits the use of the prototype.

The task of the utility model is to create a device for visual monitoring of the medium pressure.

The technical result is to expand the arsenal of technical means for visual monitoring of the pressure of the medium.

The technical result is achieved in that the pressure indicator comprises a housing, a chamber, an elastic element with an axial displacement element, a reading device with a scale and two marks, the reading device is made in the form of a threaded screw-nut pair, one of the marks is fixed on the axial displacement element, and the other - on the nut of the reading device, with the possibility of combining them by turning the screw for visual control of the medium pressure.

The essence of the utility model is illustrated by a drawing, where:

1 - case;

2 - chamber for receiving the measured pressure P;

3 - elastic element;

4 - element of axial displacement;

5 - reading device;

6 - scale.

The pressure indicator includes a housing 1, a chamber 2 for receiving the measured pressure P, an elastic element 3 fixed in the chamber 2, an axial displacement element 4, fixed on an elastic element 3, and a reading device 5 for visual monitoring of the medium pressure.

The reading device 5 is a screw-nut threaded pair. Changes in pressure are displayed on scale 6.

The pressure indicator contains two marks, one of which is fixed on the element of axial displacement 4, and the other - on the nut of the reading device 5, with the possibility of combining them by turning the screw of the reading device 5 for visual monitoring of the medium pressure. Thus, the displacement of the risks attached to the element of axial displacement 4 in the presence of pressure in the chamber 2 can be displayed on the scale 6 of the pressure indicator (viewed by the observer when turning the screw of the reading device).

As an elastic element 3 of the pressure indicator, a stainless steel bellows can be used, the design parameters of which are selected based on the pressure P values, as well as the design features of the device as a whole. Risks can be manufactured with a reflective coating.

The pressure indicator works as follows.

The pressure of the medium P is fed into the chamber 2. By the elastic element 3, the pressure in the chamber 2 is converted into the displacement of the axial displacement element 4 and, accordingly, into the displacement of the risks fixed on it. By turning the screw of the readout device 5, the risk, fixed on the nut of the readout device 5, is aligned with the risk, fixed to the element of axial displacement 4. On the scale 6, the displayed pressure change is observed.

Claims (1)

A pressure indicator containing a housing, a chamber, an elastic element with an axial displacement element, a reading device with a scale for visual monitoring of the medium pressure and two marks, characterized in that the reading device is made in the form of a threaded screw-nut pair, one of the marks is fixed on the axial element displacement, and the other - on the nut of the reading device, with the possibility of their alignment by turning the screw for visual control of the medium pressure.

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