SU562725A1 - Level switch - Google Patents

Description

(54) LEVEL SIGNALIZER

This invention relates to instrumentation engineering and can be used to control a given fluid level.

Liquid level detectors are known, which contain a float placed in a glass, and which transcends not passed to the plunger of an inductive sensor, the coil of which is included together with three relays in the value of the secondary winding of the transformer 1. The plunger of the known device is cumbersome, since it needs a plug to move the plug. and the glass has bigger dimensions.

Of the known devices, the most blunt of the technical essence of the described is a level sigalizator, containing a casing, inside which is located an electromagnet arranged in guides of a float, made of a soft magnetic material, interacting with signal contacts 2.

The disadvantage of this level signaling unit is the cumbersome and complexity of co-structuring, since the signal contacts are located under the float equipped with permanent magites.

The purpose of the invention is to reduce the size and con fi dence of the design.

This

the goal is achieved by the fact that

levelable signaling signal

The contacts are set1: Electromagnet internal waves.

The drawing shows the described level indicator, general view.

The level detector contains a float /, which is a ball filled with a magnet. which is located between four nanravlushchnnm 2, which are rigidly attached to the bottom of the housing 3 and form with the cavity in the Cornus space for a continuous float. In the cavity of the housing, a board 4 is installed with three signals b contacts 5, located at angles of 120 ° relative to each other. The level indicator also contains an electromagnet 6, protected from the worker; fluid cover 7 of the housing and an annular pilot 8. Electronisation on the signal contacts 5 and electromagnet 6 comes through connector 9. which is fitted on the top of the KOjinyea 3.

The leveling sigalizator works as follows.

Prn supply of electrons through connector 9 to electromagnet 6 and to contacts 5, float 1. located at or above the control level, under the influence of traction force developed by electromagnet 6, is drawn into the internal cavity of housing 3 and closes contacts 5 through which signals the presence of working fluid. If the float 1 is located below the controlled level of the working fluid, the traction force of the electromagnet Pa 6 is not enough to overcome the force of gravity of the float, the contacts 5 remain open, and the signal about the presence of the controlled level does not pass.

Such a design of the level gauge improves the reliability of the rotator while simplifying the device.

Form m l l a and 3 o b r with t m and

A level indicator, comprising a housing within which an electromagnet is located.

A float mounted in guides, made of a magnet of a soft material, interacting with signal contacts, characterized in that, in order to reduce overall dimensions and simplify the design of the device, signal contacts are installed inside the electromagnet.

11 source information, written in viimapie during examination:

1. Ageikiyu D.I. and others. “Sensors of control and {regulation. M., Mechanical Engineering, 1965, p. 413.

2. Copyright certificate M. Kl.2 G 01 F 23/06, 1969.