SU1237238A1 - Filter for cleaning liquefied gases - Google Patents

Description

2. The filter according to claim 1, characterized in that the part of the bypass line, located outside the filter frame, contains a coil,

The invention relates to filters for purifying liquefied gases from mechanical impurities and can be used in chemical and other industrial circuits.

The purpose of the invention is to simplify the design of the filter.

The drawing shows a schematic diagram of a filter for purifying liquefied gases.

The filter contains a filtering element 2 located in the housing 1, nozzles 3 and 4 of the inlet and outlet of the purified liquefied gas (for example, liquid carbon dioxide) located outside the housing I and connected to the nozzles 3 and 4 bypass line 5 containing a coil 6 (for example from a copper pulse tube). In the middle part of the coil 6, the clogging indicator is installed, implemented in the form of a temperature sensor 7, which is connected to the signaling circuit 8. A bypass valve 9 is installed between the coil 6. and the gas inlet nozzle 3, which operates when the pressure difference between the filter inlet and outlet increases. The temperature sensor 7 is configured to close the 8 si1- circuit at a certain temperature of the middle part of the coil (for example, -20 ° C).

I The filter works as follows.

With the passage of liquefied gas through the filter element 2 from non-editor N. Kistutinets

Compiled by E. Skl rsky Tehred L. Oleinik

Order 3222/8

Circulation 663 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Yarodno-polygraphic enterprise, Uzhgorod, st. Project, 4

The middle part of which is equipped with a temperature sensor, and an overhead valve is installed between the coil and the filter inlet.

Go to Roth mechanical parts. As the filter element 2 becomes clogged, the pressure drop before and after it increases at the same flow rate, the pressure in the nozzle 3 of the liquefied gas injection rises. When the maximum permissible magnitude of this differential is reached, the overflow valve 9 is disconnected, and the liquefied gas from the filter element 2 flows from pipe 3 to pipe 4 through the bypass line 5. Before opening the bypass valve 9 in the bypass line 5, only stagnant entered into it at the beginning of the filter operation cycle from pipe 4. When the bypass valve 9 opens and cold liquefied gas passes through the coil 6, the temperature in it decreases, and the temperature sensor 7 installed in the middle part of the coil The temperature, e.g., -20 C) 8 closes an electric circuit, a result is formed light- howl signal filter clogging. In addition, frost appears on the coil 6, which also indicates that the filter is clogged. By performing part of the bypass line 5 in the form of a coil 6, the temperature in the middle part of it increases when the filter is operated to a temperature close to the ambient temperature, as there is heat exchange between the product in the coil and the surrounding medium.

Proofreader T. Kolb

Claims (2)

I. FILTER FOR CLEANING WOMEN'S GAS COMBUSES, containing a filter element located in its housing, a bypass line with a bypass valve and a filter clogging indicator, characterized in that, in order to simplify the filter design, a part of the bypass line is located outside the filter housing, and the clogging indicator is made in the form of a temperature sensor installed in the alarm circuit on the bypass line, which is located outside the filter housing. e SU „„ 1237238 2. Filter by π. 1, characterized in that the part of the bypass line located outside the filter housing contains a coil, in the middle part of which a temperature sensor is installed, and a bypass valve is installed between the coil and the filter inlet.