SU1571155A1 - Device for protecting pipeline from frozing - Google Patents

Abstract

The invention relates to water supply and to the structural embodiment of a device for protecting a pipeline from freezing. The goal is to increase reliability. The device consists of a housing 1 with a lid 2, which has a section 3 on the outer surface that is free from thermal insulation, and on the inside there is a notch 5 opposite to the indicated section, a heat-insulated exhaust channel 6 with an opening 7. There is a spring-loaded shut-off valve 9 located in the case on the rod 10, on the opposite end of which a piston 11 is mounted, dividing the body on cavities 12 and 13, placed in the cavity 14 of the pipeline and communicated with it by means of throttle holes 15 and holes 16, made in the walls of the building mustache 1. The piston 11 is made with a protrusion 17 placed in the pre-piston cavity 12 coaxially with the recess 5 and forming an annular gap with the walls of the recess. 1 il.

Description

The invention relates to water supply, in particular to devices for protecting the pipeline from freezing.

The purpose of the invention is to increase reliability.

The drawing shows a device to protect the pipeline from freezing, a longitudinal section.

The device consists of a housing 1, an airtight lid 2 connected to it, having a section 3 on the outer surface, free from thermal insulation 4, and on the inner opposite side of the indicated section a notch 5, a heat-insulated exhaust channel 6 with an opening 7. In the case there is a spring-loaded spring 8 a shut-off and control valve 9 placed on the rod 10, on the opposite end of which a piston 11 is mounted, dividing the body on the cavities 12 and 13, placed in the cavity 14 of the pipeline and communicated with it by means of a throttle x apertures 15 and holes 16 formed in the walls of the housing 1. The piston 11 is formed with a protrusion 17 arranged in the cavity above the piston 12 coaxially with the recess 5 and the walls forming the recess annular gap. In the initial position, the valve 9 is pressed against the saddle 18 by a spring 8.

The device works as follows.

When the pipeline cavity 14 is filled with water, water enters through the throttle holes 15 and the holes 16 in the cavity 12 and 13 of the housing 1, while the outflow of water through the piston cavity will be much slower compared to the flow of water through the piston cavity. 8, through the piston and rod, presses valve 9 to the seat 18, preventing the water from flowing through channel 6 and hole 7. As soon as the ambient temperature drops above the permissible value (for example, below –10 ° C), it will be the fastest to cool down. ode in the cavity 12. Initially, the water freezes in the recess 5, whereby the valve 9 moves away slightly from the seat 18 and

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water begins to drain from the cavity of the pipeline through a small gap. The beginning of the discharge of water from the pipeline can be recorded, for example, by a signaling device for supplying heat to the pipeline. If a signaling device is not provided, the water will soon freeze in the entire cavity 12 and the resulting ice will completely open the valve to discharge water from the pipeline, thereby protecting the pipeline from destruction.

Since the over-piston cavity 12 is located below the upper wall of the pipeline, the air that prevents the formation of ice does not accumulate at the recess 5, which is a suitable exhaust channel, a spring-loaded choke-control valve mounted on the rod, on the opposite end of which there is a piston that separates the housing on the cavity communicated with the cavity of the pipeline through the holes, characterized in that, in order to increase reliability, the over-piston cavity is provided with a sealed seal connected to the housing minutes cover 10 The available boiling on the outer surface portion of a free from. thermal insulation, and on the inner surface there is a recess opposite to the indicated section, with the piston cavity being placed in the cavity of the pipeline, and

more reliable protection of the pipeline for communication with the cavity

Yes, due to freezing damage in the non-pipeline, they are made in the walls of the housing,

water. while the piston is made with a protrusion,

Claims (1)

Claims of invention placed in a pad piston cavity with coaxial device to protect the pipeline with the removable and forming with the walls zamerlani, sskhs-g-zhapee case with heat-recess annular gap. In the case of a molded outlet channel, a spring-loaded shut-off control valve mounted on the rod, on the opposite end of which there is a piston separating the case on the cavity, communicated with the pipeline cavity through openings, characterized in that, in order to increase reliability, the extra piston cavity is provided an airtight lid connected to the housing, having an area free from the outer surface. thermal insulation, and on the inner surface there is a recess opposite to the indicated section, and P