SU800970A1 - Device for automatic regulating of liquid fuel viscosity - Google Patents

Description

one

. The invention relates to the cleaning of Ostroeniya, mainly to technological equipment for testing temperature sensors and temperature controllers.

A device for maintaining, with a high degree of accuracy, the temperature inside the working chamber, comprising an external temperature chamber with boiling liquid, an internal chamber located in the vapors of boiling liquid 1.

The drawback of the device is the need to thoroughly seal the chambers, which creates inconvenience when test objects are placed in the chamber and makes communication with these objects difficult.

The closest in technical essence and the achieved result to the proposed is a heat chamber containing a heat-insulated body and a working chamber with openings for entering the test object, heaters, as well as an electromagnet, the core of which is installed in the working chamber. The cavity of the working chamber is filled above the opening for entering the object with a loose ferromagnetic medium .. The holes contain the dampers installed with vertical motion. The shutter of the heat insulating body is connected with a closing contact installed in the power supply circuit of the electromagnet coil. When the flap is opened, the ferromagnetic granular medium at t goes to the core of the electromagnet, and when it is closed, the medium is

0 falls on the test object. The heat chamber is effective in controlling temperatures above the operating system.

However, when controlling negative temperatures (below 6 C) through

5 holes for entering the test object into the working chamber penetrates air from the environment. The cooled bulk ferromagnetic medium intensively condenses moisture from

0 ambient air, which leads to deterioration of heat exchange conditions and freezing of the flowing medium.

The purpose of the invention is to expand the range of control during the thermo-setting of negative temperatures.

This is achieved by the fact that in the wall of the heat insulating body of the thermal chamber there are cavities connected to the opening for entering the subject. an object in which permanent magnets are installed, the hole between which is filled with ferromagnetic liquid.

FIG. 1 shows a heat chamber, a longitudinal section; in fig. 2 - the same, with otgrzztoy valve and the test object.

The heat chamber (Fig. 1) contains a heat-insulated housing 1, a working chamber 2 with holes 3 and 4 for entering the test object 5, heaters 6 located in housing 1, an electromagnet with core 7. The cavities of the working chamber 2 (filled with flowing ferromagnetic medium 8 Bfcaae hole level 3 for injecting a test object 5 (Fig. 2) and a dried gas such as aprcHONi with nitrogen or dry air. Valve 9 of the hole 4 of the heat insulating body 1 is connected to the closing contact 10 of the power supply 11 of the coil 12 of the electromagnet. and heat chambers are made of cavities connected to the opening 4 for entering the test object in which permanent magnets 13 and 14 are installed. liquids are already being developed.) To maintain unsuitable negative temperatures, amer 16 is fully boiling at low temperatures with liquid 17 (cold) that evaporates suction compressor 18 and, condensing in condenser 19, re-enters chamber 16. Temperature controller 20 controls the temperature of cameo Yes 2 and maintains the set temperature controlled by compressor 18. The control object in the heat chamber is, for example, a thermal bottle A temperature relay sensor, usually made of copper or copper alloy. For object 5 into the cavity of the working chamber 2 opens the valve 9 and closes the contacts 10, applying voltage to the coil 12. The magnetic field of the core 7 attracts the ferromagnetic bulk medium and the object 5 through the opening 4 is fed into

chamber 2. At the same time, the object passes freely through ferromagnetic liquid 15, which fits tightly the contours of the test object and, passing it into the chamber, does not allow air into it from the environment. 5 Thus, the germetisation of the working chamber 2 is ensured and the ingress of atmospheric moisture is prevented.

In laboratory testing for

About 16 hours, continuous work through the channel with ferro-liquid 15 thousand times, the ball missed the sensor and there was no sign of moisture condensation in the working chamber.

S Thus, the application of the proposed heat chamber when monitoring the temperature characteristics of temperature sensors for refrigeration technology, instead of using new kerosene baths, will bring an economic effect and will improve the working conditions, hygienic and fire safety conditions of industrial premises.

Claims (2)

Invention Formula Heat chamber containing a heat insulating body and a working chamber, with openings for entering the test object, heaters located in the body, an electromagnet with a core located in the working chamber, the cavity of which is filled with a flowing ferromagnetic medium above the level of openings for introducing the test object, the heat insulating valve enclosure connected to the amicable contact of the power supply circuit electromagnet coil ,. characterized in that, in order to expand the range of adjustment, cavities are made in the wall of the heat insulating body of the heat chamber, connected to an opening for entering the test object, in which permanent magnets are installed, the opening between which is filled with ferromagnetic liquid. Information sources, taken into account in expert examination 1. U.S. Patent No. 3272258, cl. G 05 D 23/30, published 1966. 2. USSR author's certificate in application 2556804, cl. G 05 D 23/30, 19D2; 7 (prototype).