FI58565B - TEMPERATURMAETNINGSANORDNING AVSEDD ATT ANVAENDAS VID TRYCK OEVER 1500 BAR - Google Patents

Description

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Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) P 2329836.U Proven-Styrkt (71) Friedrich Uhde GmbH, Deggingstrasse 10-12, Postfach 262, U6 Dortmund,

Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (72) Bernhard Klicks, Hagen-Haspe, Josef Stalzer, Hagen, Gunter Dornhoff,

Hagen, Jörg-Peter Kömer, Hagen, Federal Republic of Germany Förbundsre-publiken Tyskland (DE) (7U) Oy Kolster Ab (5U) Temperature measuring device for pressures above 1500 bar - Temperature monitoring according to the above three cycles

The invention relates to a temperature measuring device for use at pressures of more than 1500 bar which has been stolen with a valve and a multi-blade pressure screw connection.

A temperature measuring device with so-called * electric thermometers with a thermocouple is needed when local flooding cannot be performed and reading cannot be obtained using extended thermometers, and also when the flow values have to be transmitted to the measuring and control station by electricity. If temperature measuring devices have to be built in closed systems, eg * pipelines and tanks, these devices must be absolutely tight and nevertheless still be very sensitive to temperature, te. their operating times must be very short * So-called * jacket heating elements are used to meet the weather requirements. comprising HAMA industrial heating elements for heating a pair of two spaced-apart, made of a different metal compound of the metal conductor, surrounding them, on one side with a closed jacket part and the jacket of the filler, which insulates the metal conductors between * the two ends of one side of the metal wires is in turn soldered pisteenmuotoisesti the measurement location, which is closed on the side of the metal shell. Thus, the measurement site may be at this point or it may be arranged in isolation. To keep the thermocouple to suction time, 58565 should be as short as possible, you. in order for the temperature sensitivity in the meter to be high, the metal sheath must be very thin, 0.0? - 0.3 mm. The other two free ends of the metal conductors are guided in isolation at the open end of the metal sheath through the sheath closure and are attached to a coupling part for connecting the measuring wires.

When such thermocouples are used in pressurized devices, they are then provided with a pressure screw connection. It is multi-part and is a shaped ground steel ring comprising a sheath. The pair of flaps can be tightened in place with a slight change in the diaper.

However, such flange-type fitting devices with a pressure screw connection can only be used up to approx. 500 bar * At higher pressures, the pressure screw connection is no longer tight and the jacket of the valve pair changes shape, which again reduces the insulation performance. Therefore, an attempt has been made to surround the jacket tube with an additional protective tube, which is likewise closed on one side. This protective tube is welded to the pressure screw connection. However, such a temperature measuring device has proven to be hta, te. its operating time is too long for many difficult adjustment tasks · Between the measuring point and the substance to be measured there is a perimeter of the closed protective tube on the other side.

The object of the invention is to eliminate the above-mentioned disadvantages which occur in previously known temperature measuring devices at pressures of more than 1500 bar.

According to the invention, this is achieved by welding the sealing cone of the pressure screw blank on both sides to an open pressure protection tube surrounding the jacket thermocouple in the part between the sealing cone and the measuring point, and further filling the ring

The advantages offered by the invention are manifested in particular in that the very short operating times of the pair of valves remain unchanged and that even at pressures substantially higher than $ 100 bar, e.g. at 7000 bar, the temperature measuring device remains equally tight. The sealing temperature of the temperature measuring device and the screw connection has been kept as small as possible.

The temperature measuring device is designed to be safe to use so that the high tensile forces generated when screwing the temperature measuring slots into the pressurized device cannot be transferred directly to the thermocouple. The flexible heavy metal solder then acts as a damper. The annular space between the metal thermocouple and the bellows tube is filled with a heavy metal solder, which in turn is so long that it can absorb the axial shear force due to the pressure effect.

The drawing shows in section one embodiment 1. of the embodiment in question. of the invention And will be described in more detail below.

4 5 58565

Figure 1 of the drawing support shows a built-in temperature space measuring device in approximately normal size, and Figure 2 shows a thermocouple with a jacket and a protective tube on an enlarged scale.

The high-pressure device 1 has a hole 2, the diameter of which must be as small as possible in order to keep the sealing forces in the screw connection 3 as low as possible. The temperature measuring plate according to the invention comprises a jacket thermocouple 4 with a switch 5 for connecting the measuring lines, as well as a pressure screw connection 6 and a welded pressure protection pipe 7 open on both sides. outside, so the pressure equipment gets as little thinning as possible at this point.

The enlarged temperature measuring device shown in Fig. 2, and in particular the point of the pressure protection tube, clearly illustrates the heavy metal solder 10 which is around the thermocouple and which can act as the sole of the pressure protection tube. The annular space between the entire Sun jacket thermocouple and the pressure protection tube is filled with heavy metal solder, thus ensuring that the high pressure of the pressurized device can be reliably controlled.