SU95859A1 - The method of measuring the radial forces generated by the sealing rubber parts at the place of their contact with the sealing objects, and the instrument for implementing this method - Google Patents

Description

now widely used; They have rubber parts as seals in general and as non-movable seals, for example, as a type of brake auto-mobile} of the first valve. When developing such devices, it is necessary to know the effect of time and temperature on the following: no upstream rubber parts. On the other hand, conflicting conditions that provide sealing and sufficient mobility of sealing rubber parts require finding the smallest radial forces.

Distinctive feature

The proposed method for resolving the indicated: problem is that the sample to be tested is forced through a fine-grained metal tube and the antinode generated on the tube is measured as a measure of the radial forces.

To implement this method, a constructive feature of which is proposed is that, in order to measure the antinodes arising on the tube, created by the sample,

The pipe is fixed. Two ohmic strain gauges are deformable and: temperature-sensing, included in the L1stone bridge circuit.

The drawing shows a diagram of the instrument for measuring the radial forces to compact the cutting: other parts.

Grounding / reinforced v forwards racks 2, on KOTOIIBIX smITITI: not designed for moving the grass with nut 4. At the end of the screw. the flywheel 6 is rigidly seated. In the center of the mobile yoke 7, on one | the axis with a screw 5, the cartridge I was fixed for clamping the rod 9, at the lower end of which there is a landing unit 10 for securing the test specimen //.

The sensor 12 is a radio, 1 ny amp: and is installed on the disk 13, freely seated in the bore of the base /, which at the beginning of the press-fit, center the sensor with the test sample. Sensor 12 consists of a metal tube of 14 C, which is planted on it by a hermetic thick-walled glass 15, which plays the role of a casing. The tube 14 is turned into a cone, which serves to compress the sample when pressed.

On the tube 14 za ohmic them ko are fixed; P) are their thermometer, of which the strain gauge is 16-deformed). , and a 17-thermocompensation strain gauge. Both strain gauges are included in the Wheatstone bridge circuit.

The electrical resistance of the deforming strain gauge 16 is changed, arising as a result of: unpleasant dissolution and the formation of radiation on the tube, (they are fixed in the electrical room and.) 18.

The thermocompensation strain gauge serves to compensate for possible changes in the electrical resistance of the defrosting temperature gauge in Fig.1, and: it changes the temperature AND so that it does not deform when the sample is stored in the tube.

With integer impact influence of the pressure of the air shade, according to the diagram of the n1-south in the section between the cup and the tube, pa diameter of the tube, this cavity is connected through pipe 19 with a very soft rubber 1 ruey 20, which provides airtightness, Ura-VnitPigiet pressure e atmospheric.

In order to provide a predetermined temperature in the sample, a sensor sensor in the heating tank 21 or in the tank with cooling and with it the mixture.

The reservoir 21 is reinforced on glass 15, which allows n) to produce

ne) use the sample in a beaker at a given temperature.

This mixing is performed by a slow rotation of the flywheel 6, c) whereupon sample 11 is forced through a thin metal tube 14. In the compressed state, the sample is left for a specified time and the antinode arises as a measure of radial pressure.

A sample temperature measurement was made with a humor thermocouple 22, mounted in a tubular needle, the end of which is driven into the male end of the thread.

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1.SPOSob measured Radial mustache; i.1ii, created by yn / yutn yupdi11i rubber parts. In the place of their contact with ui.-yunit objects, about tl and h ay Hj, and 1 with the fact that n | K) da.TIV10t through the topkosttetsiye metallogy tube and measure the AFTER 1U10 on the surface of the tube, measuring acuity, as a measure of p a l and a ls-1 s x s, or ii.

2.Pr.ibor In order to demonstrate the method of clause 1, about nl, and ni, and also by the fact that he expresses himself in the form of a hand screw press with a sample holder and a thin-walled metal tube for the sample and a sample flute, ia side surface, and for which cannleshies are ohmic .1 meters for measuring the great antinodes of the walls of the tube np; i of the peeler-NNi sample through it.