Device for protecting piping from freezing
(57) Abstract:Usage: in the field of water supply and drainage and can be used to prevent freezing of water pipes and their elements operated at low ambient temperatures.The inventive device installed inside a pipeline, includes case with holes, drain pipe, the annular piston, the valve seal. To the annular piston by means of levers attached to the rod with a groove on which there is mounted for movement along the valve is made in its cavity and installed in the cavity of the heat-sensitive elements, and on the rod above the valve placed elastic element. 3 Il. The invention relates to the field of water supply and drainage and can be used to prevent freezing of water pipes and their elements operated at low ambient temperatures.The known device to release the water from the piping when the risk of freezing [1,2] the Disadvantage of them is that after emptying pipe drain channel remains open, therefore there are leaks water when re PU the defects are large vertical dimensions, the presence of a sealed cavity, the depressurization which will significantly reduce the efficiency of the device, and also that when you start again the incoming water is first of all to wash the upper part of the device, which can lead to delays in the opening of the discharge channel.Closest to the proposed to the technical essence is the device  (prototype), comprising a housing with holes, drain pipe, put on him the annular piston attached to the valve, and the valve-side drain pipe has a blind hole filled with water and closed with an elastic seal.The disadvantages of this device are large vertical dimensions, having a sealed cavity, and placing the cavity above the drain pipe, whereupon it is washed with water and re-start possible untimely opening of the discharge channel.The purpose of the invention increase the efficiency and reliability of the device by preventing leaks when repeated after a reset, the start of water.This objective is achieved in that in the known device, including installed inside a pipeline cor is the exploits of levers attached to the rod with a groove, which can move along the worn valve made cavity and mounted in this cavity temperature-sensitive elements, and on the rod above the valve placed elastic element.Comparative analysis of the prototype shows that the inventive device is characterized in that it has an additional rod with a groove, a valve mounted with the ability to move along the rod with the inside of the cavity with the hosted elements.Thus, the claimed device for protecting piping from freezing meets the criteria of the invention of "novelty."A comparison of the proposed solutions not only prototypes, but also with other technical solutions in this field of technology, failed to reveal any sign that distinguish the claimed solution to the prototype.Known valve (application N 52-30781, Japan), which is inside the hole, however, it is intended to accommodate the mechanism of opening of the drain.In the proposed solution the hole is designed to provide the valve to move relative to the rod.According to the decision (s crane, application N 56-16810, Japan) valve has a cavity. is when I change the size of the sensitive element, outside the cavity. The device is not closed immediately after reset.The proposed device, the cavity is designed to accommodate a thermosensitive element, the locking valve relative to the rod to reset and release it after discharge.This allows to make a conclusion on the compliance of the claimed device, the criterion of "substantial differences".The essence of the invention is illustrated by drawings. In Fig. 1 is a diagram of the device in the position corresponding to normal operation of the pipeline of Fig. 2 the device in case of emergency water discharge, Fig. 3 the device is closed after emergency release.Device for protecting piping from freezing consists of installed inside the pipeline 1 housing 2 with holes 3. Inside the drain pipe 4 with lugs 5, nozzle wear ring piston 6, which arm 7 is attached to the rod 8 with the groove 9. On the rod worn valve 10 with the seal 11, and the valve is made of the cavity 12 in which is placed and attached to the valve temperature-sensitive elements (for example a bimetallic plate) 13. Between the levers 7 and the valve 10 on the rod 8 is elastic element 14, between the UE isDuring normal operation of the pipeline, water enters through the opening 3 into the housing 2 in podporchennuyu cavity. Circulation it prevents freezing. When you stop the flow first ice formed on the walls of the pipeline. When the ice crust will block the holes 3 and podpornega the cavity to be sealed, a further increase in volume during the expansion of freezing water will move up the piston 6, through which the levers 7 will raise the rod 8. The valve 10 in this moment with the rod 8 is associated with temperature-sensitive elements 13, at temperatures above 0°C has a configuration that enables the coupling them with a rod through the groove 9. He also will rise. Through the resulting annular gap between the valve and the edge of the pipe the water from the pipe 1 will flow out, thereby preventing its rupture.After emptying of the pipeline 1, the temperature inside will be reduced, the sensing elements 13 to change the configuration and exit the groove 9. The elastic element 14, the valve 10 will be pressed against the drain pipe 4, blocking the channel for water drainage.After rebooting water having a temperature greater than 0oWith, will melt the ice in podpornoy the camera and elastic e the coefficients 15 re-enters the groove, the device will switch to its original state.The analysis device or the protection of the pipeline from freezing (prototype) shows that for melting the ice inside of case you want to skip through the pipeline about 8 m3with a temperature of +2oWith the depressurization of the upper cavity through the open drain connection after rebooting water is poured around 13% or 1,04 m3. When the price of water (according to the group "Severokuzbassugol") 190 rubles/m3the economic effect from the use of the proposed device will be about 200 rubles each time it is triggered. In addition, leakage reduction will reduce ice formation around the pipe at the place of installation of the device. Considering the fact that the device must be installed on all areas of possible water accumulation in the pipeline and that they will all operate at the risk of a pipeline rupture due to freezing and termination of the water supply, the economic effect from implementation of the proposed devices on a single pipeline with a length of 1000 m only by preventing water leaks will be about 200,000 rubles per year, and taking into account prevention of cases of rupture of the pipeline when Tamerza is certain inside a pipeline casing with holes, the drain pipe, the annular piston, valve seals, wherein the annular piston by means of levers attached to the rod with a groove, which can move along the worn valve made cavity and its temperature-sensitive elements, and on the rod above the valve placed elastic element.
SUBSTANCE: invention relates to the devices preventing freezing of building heating system. Device preventing freezing of building water-heating system is installed at the inlet pipeline and consists of cutoff valve and control unit. The device is located at the upper point of heating system. Control unit is made of material with a shape memory effect, transient point of which is between room temperature and 0°C. There is additional vertical pipeline with open end, connected to the inlet pipeline.
EFFECT: simplification of design of device preventing freezing of building water-heating system.
2 cl, 3 dwg
FIELD: construction, pipeline.
SUBSTANCE: invention pertains to the field of heating and water supply. Device protecting pipeline from freezing contains heat insulated pipeline with bleed-off from the pipeline actuating unit. Whereat actuating unit consists of water pipe cock threadedly secured of the branch pipe welded into the hot water pipeline and made capable of micro-circulating in the hot water pipe branch maintaining positive temperature inside the cock. Grip portion of water - pipe cock is made as an accordition boot internal surface whereof is cone-shaped, with one end of least two coils of channeled stainless steel pipe connected to it, by other end the coils are connected to the bottom. Provided that the bottom is connected with a stock containing a valve closing seating of the cock. There is a threaded opening in the bottom closed by a male screw with a gasket seal.
EFFECT: enhanced reliability of the device and simplified design of the construction.
FIELD: machine building.
SUBSTANCE: proposed device comprises body arranged between fluid feed pipe inlet and outlet, valve units arranged inside said body to let fluid in and out in compliance with inner pressure variation, and heat-sensitive device to create pressure difference in said valve unit to comply with heat-sensitive fluid temperature variation. Heat-sensitive device comprises heat-sensitive assembly with heat-sensitive fluid, reaction chamber, valve chamber, discharge pipe, first fluid channel to communicate reaction chamber with valve chamber, and second fluid channel to communicate reaction chamber with discharge pipe. When heat-sensitive fluid reaches preset temperature running fluid gets into reaction chamber owing to operation of heat-sensitive assembly. Running fluid in body to be fed into valve chamber is discharged via discharge pipe due to pressure difference created in valve chamber.
EFFECT: ruled out discharge pipe freezing.
23 cl, 17 dwg
SUBSTANCE: device comprises a pipeline with an actuating mechanism for water drainage with a valve and a screw with a sealing gasket. The valve covers the body seat. The body is made with a cover in the bottom part and drain holes in walls of the body and the cover. The upper part of the actuating mechanism body is made with a guide. On the guide there is a piston installed with sealing rings capable of vertical displacement. The lower surface of the guide is in the centre of the inner cavity of the piston. The piston is spring-loaded relative to the cover of the actuating mechanism body. The inner cavity of the piston is filled with heavy water. The piston bottom is a valve. The actuating mechanism body is fixed inside the protected pipeline.
EFFECT: increased reliability of device functioning.
FIELD: machine building.
SUBSTANCE: protection method of pipes of a water line against damage at freezing of water in a pipe allows preventing breaking of the pipe of the water line in case the pipe water freezing process has already occurred. For that purpose, an auxiliary pipe is arranged in the centre of the main pipe. The nominal diameter of the auxiliary pipe is determined by means of a calculation based on strength properties of a material of the main pipe. The material of the wall of the auxiliary pipe is chosen as an elastic material with low values of thermal conductivity and friction coefficients. The wall of the auxiliary pipe is uniformly perforated with holes with a diameter of 1-1.5 mm, which are located from each other at a distance that is not more than the nominal diameter of the auxiliary pipe.
EFFECT: enhanced protection reliability of a pipeline.