DE179144C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

- M 179144 CLASS 42 «. GROUP

Patented in the German Empire on January 7, 1906.

The invention relates to an apparatus for determining the moisture content of pressurized water vapor. The device is based on the following

Relationships under natural law: When dry ^ saturated water vapor flows over from a room of constant higher pressure into a room of constant lower pressure Pressure, a calculated temperature drop takes place, which the Marks overflowing steam as overheated. Left under the same conditions If moist water vapor flows over, then appears in a lawful connection with the size of the moisture content The temperature drop is greater or the overheating is less. That fact is already for determination the moisture content of high voltage vapors has been used. The invention consists in that the steam flowing over successively flow through a number of concentrically arranged containers must, which is also surrounded by a jacket made of poorly conductive material so that the innermost room in which the temperature is measured does not lose any heat through conduction or radiation suffers, and the accuracy of the measurement is increased.

The invention is shown in an exemplary embodiment in the accompanying drawing shown.

Fig. Ι is an axial vertical section through the moisture meter,

Fig. 2 is a cross section of the same.

The device consists of an overflow vessel which is formed by a central container which is enclosed by a number of concentrically arranged jackets. The central container and the jackets are made of a material with the lowest possible thermal conductivity, e.g. B. made of nickel silver. The overflow vessel is surrounded by a further vessel α , the free space of which is filled with gravel or some other material which is suitable for protecting against heat loss. The central container and the jacket spaces b taper conically at the top and bottom and are closed at the top by a continuous vertical tube d and at the bottom by a similar f . The upper tube is used for the passage of a thermometer c, which is sealed at the top by a cone and union nut e to prevent the steam from escaping. The lower tube receives the supply tube g and is provided with a flange h for connection to the steam line. The steam leaving the central container now has to flow through the jacket spaces b in alternating directions, for which purpose the flow openings i are provided alternately above and below, which are large enough to allow the steam to pass through the apparatus unhindered, i.e. with a voltage not exceeding atmospheric pressure can cross out. A pipe / with a tap m is provided for discharging and draining off the condensation water that forms at the beginning of the flow, while the steam itself is discharged through a pipe k.

Now, after reading the temperature on the thermometer c, the moisture content of the steam examined without

"C. 160 155 Te mp 150 HS e r a t u r η a i : h the ex 125 emanates 115 I! HO Ϊ05 IOO 200 0.30 0.88 1.45 2.03 140 135 130 4.3 ² I2O 5.47 6.05 6.62 7.20 195 0.52 1.09 1.66 2.6o 3 .. » 3.75 3.94 4.90 5.0.8 5.65 6.22 6.79 men: 190 0.18 O, 74 1.31 2.23 2.8o 3.37 3.57 4.5 ' 4.69 5.26 5.82 6.39 :O 185 0.39 0.95 1.87 2.44 3.00 3.'9 4.'3 ■ 4.3 ' 4.87 5.43 5.99 C / 3
U 180 0.05 0.6i 1.5 ' 2.07 2.63 2.82 3.75 3.93 4.48 5> ° 4 5.59 O 175 0.26 I ,, 6 1.7 " 2.27 2.46 3.38 3.56 4.11 4.66 5. = ' S. 170 O, 8i 1.36 1.9 ' 2.1. 3, o; 3.'9 3> 74 . 4.28 4.83 -O
U
O 165 O, 47 1.02 1.56 1.76 2.65 2.83 3.37 3.9 ' 4.45 3 160 0.14 0.68 i, 22 1.4 ' 2.30 2.48 3.0 ' 3.55 4.08 advice 155 0.34 O ₁ S ₇ 1.07 1.94 2.13 2.66 3.'9 3-72 (D
ft 150 Ο, οΐ 0.54 0.73 1.60 1.78 2.31 2.84 3.36 C.
CJ
f_ 145 0.21 0.40 1.26 1.44 1.97 2.49 3.01 140 0.07 0.92 Ι, ΐΐ 1.63 2.14 2.66 135 0.59 0.78 1.29 I, 8o 2.32 130 0.26 O, 45 0.96 1.46 1.97 125 0.12 0.63 i, 13th 1.64 120 0.30 O, 8o 1.30

To be able to determine the invoice, the table above has been drawn up. From the same is, using the simultaneously determined temperature of the steam before the overflow, conveniently the desired moisture content as a percentage of the mixture of dry steam and moisture can be seen immediately.

If a temperature of 100 ° is read on the apparatus, the numbers of apply last vertical row only in the case, which cannot be decided, that the flowed over Steam is just saturated dry. Otherwise means an overflow temperature of 100 ° a moisture content that exceeds the numbers of the last vertical row and there may be higher moisture contents, as corresponding to these figures, was not determined by means of the present apparatus will. The higher the pressure and thus the temperature of the steam to be examined the device can be used within the wider limits.

Claims (1)

Patent claim: Device for determining the moisture content of pressurized water vapor by measuring the heat loss after overflowing into a room of lower pressure, characterized in that that the overflow vessel is composed of a number of concentrically arranged containers, which one after the other in opposite directions from that through a throttle valve steam entering the central part will be crossed out before its exit into the open air, and by a is surrounded by a jacket protecting against heat loss, for the purpose of temperature displays, which are not affected by heat losses. 1 sheet of drawings.