DE1108370B - Ash removal device - Google Patents

Description

INTERNAT. KL. F 23 j

GERMAN

PATENT OFFICE

D 28444 Ia / 24g

REGISTRATION DATE: JULY 3, 1958

NOTICE THE REGISTRATION AND ISSUE OF THE EDITORIAL: JUNE 8, 1961

When measuring valve lifts and piston movements and also when determining Pressures in cylinders of explosion engines and other machines are widely used Complicated measuring devices with piezoelectric crystals, or inductive or capacitive ones are built Donor one. These measuring organs require space. They are often quite sensitive to changes in temperature, they are also very demanding to maintain, complicated and expensive to build.

In the arcing chamber of a convector switch ζ. B. the movement of the contacts as well as the contact pressure be measured. Known for installation. ter measuring organs, such as piezo crystal, electromagnetic or electrostatic sensors, or mechanical measuring equipment, there is often no space.

With all these problems, such as movement of valves, switching contacts in arcing chambers, pressure indicators etc., spiral or coil springs are effective as energy storage devices. The invention lies in the The idea is to use these springs to measure the movement.

The invention relates to a device for electrical Measurement of the movement of valves, switch contacts, pressure indicators, etc., which under the force of a spring.

The invention consists in that the spring is switched on as a coil in a measuring circuit, so that the movement is displayed as a function of the length of this spring.

The coil itself or its inductance is included in a measuring circuit, with a change in length changes the basic setting of the circuit, which is displayed on a display instrument. The change can also be evaluated in a control or regulating circuit. The coil itself can have different shapes, with practical installation aspects in the foreground stand.

The invention is explained in more detail using exemplary embodiments.

Fig. 1 shows the installation of a spring and the associated measuring circuit;

Figs. 2 and 3 show different design and installation options for the spring.

In Fig. 1, 1 and 2 denote machine parts moving against each other, their distance change or whose pressure change is to be measured. One part, e.g. 1, can be fixed, the other Part 2 movable or vice versa. The helical spring 3 is inserted between the two insulation parts 4. The spring is under constant pressure pre-ash removal device

Applicant:
German Babcock & Wilcox steam boiler -

Works Aktien-Gesellschaft,
Oberhausen (RhId.), Duisburger Str. 375

Alfred Kettner, Edwin Radzak

and Karl Alfermann, Oberhausen (RhId.),

have been named as inventors

tension and presses against the two machine parts 1 and 2. The support of the spring on the insulating parts takes place via interposed contact rings 7. A measuring device is connected via these rings 5, which shows the inductance or its change under the compressive movement of the parts 1 and 2 measures and this on the display device for display comes.

The display device can be built in such a way that the coil 3 is initially connected to a capacitor is connected and forms an oscillating circuit with this. This resonant circuit can be part of an oscillator whose frequency depends on the coil length. Its frequency will be with the constant frequency a second oscillator compared. The resulting difference frequency comes from the display device see full ad. The device is expedient depending on the coil length or the stroke of the two machine parts 1 and 2 moving against each other are calibrated.

The relatively small inductance in the order of magnitude of μΗ necessitates the use of very high frequencies on the order of 10 MHz.

The high frequency allows the current to flow through the display instrument with practically no inertia, so that oscillographic recordings of the spring movement are easily possible.

FIG. 2 shows an arrangement of the spring with the omission of insulating intermediate layers; the spring ends lie directly on the metal part 14. It is assumed that the two supports of the spring have a short, good electrical connection between them. Both ends thus together form one connection 14 b of the coil, while the other connection 13 is attached to the center of the coil.

109 610/192

is closed. The electrical connection between the coil ends can be improved or established, for example, by an elastically yielding strip conductor 14 α.

In Fig. 3 is an arrangement with two cooperating concentrically arranged partial springs 3 and 30 shown. The two ends on one side, e.g. on the side of the movable one Machine part, lie directly on the conductive machine part 14. The other two coil ends are on the fixed insulating part 4 with the interposition of connecting rings 7. About this the supply and discharge takes place after the measuring device 5. The arrangement has the advantage that the connections are not moved, so are not subjected to any vibrating forces, which is good for operational safety and for the service life is advantageous.

Claims (3)

PATENT CLAIMS: 1. Ash removal device for a furnace from which the slag flows in the liquid state into a granulating container and from this via a closure flap into a rinsing channel, characterized in that the granulating container (2) consists of two identical halves separated by a partition (3) which form a rotatable unit in such a way that each of the two halves can be brought under the slag outlet opening by rotating the granulating container about a vertical axis. 2. Ash removal device according to claim 1, characterized in that between the two A water cup (5) is arranged in halves of the granulating container. 3. Ash removal device according to claim 1, characterized in that the not in operation located half of the granulating container (2) against the passage of the smoke gases from the other Half is protected by a flap (21). Considered publications:
German patent specifications No. 302 610, 451 912,
695 1 sheet of drawings © 109 610/192 5.61