Underceiling non-evaporating widening tank of heating system and method of detecting slow water leaking from heating system

FIELD: heating systems; liquid heating systems.

SUBSTANCE: under-ceiling non-evaporating widening tank of heating system has solid casing in form of a canister with level-metering pipe, widening space communicating with heating system and air space separated hermetically from widening space by soft membrane. Air space communicates with environmental air. Membrane is made inform of air bag. Neck of bag is withdrawn out of neck of casing and is connected hermetically with the neck. Plug provided with air hole is tightly inserted into neck of casing. Plug is fastened by screwed cap provided with air hole which is not aligned with hole in plug. Method of detecting of slow leaking of water from heating system is based upon the fact that temperature graph of the system is built in summer without heating. For the purpose values of water level in level-metering pipe of the tank at steady temperature are put along abscissa and values room temperature are put along ordinate; received calibrated curve is subject to calibration. The graph is taken as averaged temperature calibration graph and steady values of outside temperature are drawn above corresponding values of level. When taking subsequent measurements, the averaged temperature is determined again and if the value of level get lower it is assumed that water loss takes place because of leakage or evaporation of water caused by disturbance in leak-proofness of the air bag.

EFFECT: simplified design of tank; better degree of protection of membrane.

2 cl, 1 dwg

 

The invention relates to heating, and more specifically to systems hydronic heating, circulating systems, mainly water, namely, expansion tanks, and prevention of environmental pollution.

Widely known volatile attic insulated expansion tank system hydronic heating (Schwartz A. "the Device to prevent damage from expansion of the liquid in the liquid heating system", EP No. 0313599, F 24 D 3/10, 23.10.1991).

The main disadvantage of analog - continuous evaporation of water causes other disadvantages:

1. the need for frequent zalazane to the attic to check the level of fluid ("water") and add it, why the need for a healthy disciplined person;

2. the increase of the layer of scale in heating boiler after adding water;

3. clogging of the system of particles drawn into the tank from the air, because the tank is constantly "breathing" due to changes in temperature and atmospheric pressure;

4. the undesirability of installation of the tank under the ceiling of the room because of the increased humidity and health hazards, if the system is filled with liquid, non-destructive system during solidification, but harmful to health.

As the closest analogue adopted ceiling nespray expansion tank heating system containing a hard shell with expansion cavity, the reports of the military with the heating system, and the air cavity is hermetically separated from the expansion cavity soft membrane and communicated with the ambient air (Meanings I.I. "Waterproof membrane expansion tank", U.S. Pat. Of the Russian Federation No. 2209377, F 24 D 3/10, 17.07.2003). In the prototype sealed expansion chamber 8 in the open housing 1 containing the bottom and the wall, separated from the air cavity 7 soft membrane 4, which is connected by its edge with the edge of the housing 1 with the possibility of crushing the membrane 4 to the bottom 3 of the housing 1 of the air by reducing the water level in the tank. In the prototype addressed the shortcomings of analogue.

The disadvantages of the prototype:

1. some of the complexity of manufacturing, for even in the base body in the form of canisters need to cut a window, of a polyethylene film to find details of the membrane, cook from them to reach the size of the tank, weld its longest edge to edge of the window;

2. insecurity membranes from random gusts.

The objective of the invention is to eliminate the disadvantages of the prototype, namely the simplification of the manufacture of the tank and secure the membrane.

This object is achieved in that in the ceiling neoprayer expansion tank heating system containing a hard shell with expansion cavity communicated with the heating system, and air cavity is hermetically separated from the expansion cavity soft membrane and soo is illuminated with ambient air, the body is made in the form of cans and provided with a sight tube, the membrane is made in the form of an air bag, the throat of which is derived from the neckline casing and hermetically sealed to her in the neck of the casing tightly inserted tube with an air hole and secured screwed cap with an air hole is not aligned with the hole in the tube.

In the drawing - proposed tank in working condition, side view.

If after the title there is no position of its rooms, it is known from the prior art for a specialist or clear from the description and the drawing, it may even be missing in the drawing. Building a simple tank for a private country house is unnecessary plastic canister, zaborava the environment. In the housing 1 is placed a membrane made in the form of the air bag 2 from regular plastic bags, which forms an air cavity to fill the entire cavity of the housing 1 without the tightness of the bag 2 and with the appearance of folds, the sum of the volumes of the bag 2 and the expansion cavity above the water level constant. The edge of the bag 2 in the neck 3 of the housing 1 forms a throat 4 of the bag 2; the speaker of the neck 3, the edge of the throat turned 4 on the outer side of the cap 3 and sealed it. In case 1, fixed water pipe 5 for communication with the system and made a tightly closed sticky is antoi 7 technological hole 6 for the exit of air from the expansion cavity when filling the system. The tank is installed on the ceiling shelf fixed to the wall or ceiling of a room in summer is filled to the estimated lowest level above the pipe 5, and when the greatest heat the water level raises the lower part of the 2n bag almost 2 to the upper part 2B at the upper part of the housing 1.

A well-known problem of detecting slow water loss from the system, for example, from the author's certificate of the USSR No. 1786, G 01 F 1/56, 30.10.1926.Tasked with declared neoprayer tank, as the closest analogue, is achieved in that in the method of detecting slow the loss of water from the heating system in the summer without the heat build-temperature chart system, which lay at the steady state temperature values of the water level in the sight tube of the specified tank according to the first object along the x-axis and temperature in the room on the axis of ordinates, extrapolate the obtained calibration curve, when working this system adopt this schedule for the calibration curve was averaged temperature, is applied over the corresponding values of the steady state values of the outdoor temperature, with subsequent measurements again determine the average temperature, if the level value became smaller, accept that there are water losses due to leakage or evaporation of water from leaking specified in zaushnogo bag 2.

These are the basic steps known from the prior art and understandable from the description of the application. Because the mass of water at the stated tank remains constant, and its volume depends on temperature, in the summer of the sight tube may be calibrated, as thermometer. When the system temperature areas are different, but they give the total volume change, therefore, water level, it is equal to the level that was when calibrating process in the summer and corresponded to a certain temperature, now this is the average temperature of the system. The temperature of the air in the room, i.e. the room with the tank, is maintained approximately constant, but at lower ambient temperature, i.e. in the street, the average temperature increases, so the level rises (and Vice versa), so each ambient temperature should correspond to the average temperature and your level, if you re outside temperature in the morning you find that the level has dropped, this means that the mass of water has decreased.

Making a simple tank. Here are the basic steps, characteristic for the manufacture of the tank, other than the prototype; the remaining steps known from the prior art and understandable from the description and drawing are not mentioned, but it runs. Plastic bag compresses along in the form of a rod, is injected into the mountains is owino 3 until it stops (the edge of the bag sticking out of the neck 3), inserted into the throat 4 inflatable tube compresses around the edge of the bag, inflate the bag mouth (the air out of the case 1 is pushed out through the gap between the neck 3 and a neck 4) to failure, coat the outside of the neck 3 and the throat 4 sealing substance (grease and other), turn into the throat 4 and compresses turned the throat 4 around the cap 3, for example elastic ring, cut off the extra edge bags, the bag 2 is made. Technological hole 6 for the escape of air from the housing 1 is made earlier, the burrs are eliminated; in the previously made hole fix the pipe 5. A simple tank ready. There is a strong bonding of the throat 4 of the neck 3, but it doesn't need to, because the pressure difference on both sides of the bottom of the throat 4 does not exceed the height of the water level above the bottom of the throat 4.

Some changes in the manufacture of the tank.

Turned the throat 4 is welded to the end cap 3 with provarkoy all folds posistor swarnyk (Nikolaev HUD and other "Method of welding of thermoplastics, the device for its implementation and manual welding tool, patent RF № 2048985, 29 65/18, 27.11.1995). In the throat 4 is tightly inserted tube with an air hole and secured screwed cap with an air hole is not aligned with the hole in the tube. The air hole in the tube are in the form of 2 overlapping blind holes to prevent wrecking procs the flexible bag 2 pin because its end will not fit into the 2nd hole and abuts the bottom of the 1st hole. The bag 2 is made in the form of a plastic bag from a polymeric film or welded, or glued from it by the shape of the cavity of the housing 1. The body has a metering device, such as a sight tube. In the housing 1 is made aspic hole with an airtight cover. In the expansion tank for the Central heating system can also place the bag 2 and to seal the tank itself, making it much less.

Installing tank and prepare the system for operation.

Summer fill the system until the end of the riser. Set the tank on the ceiling shelf attached to the wall or the ceiling, connect the pipe 5 to the riser, easier - hose, refuel the system through the drain hose (air is squeezed out through the hole 6) or through the fill port to the calculated level at a known temperature (all measurements are performed at approximately the steady-state temperature, for example, if the values are constant within 1 hour). Again inflate the air bag tube, seal the hole 6 (and other) tape 7, this is sufficient for the pressure in the housing 1 is atmospheric, so there is no force pulling the tape 7. Check the tank, which heats the system up to the highest temperature (but not 100°in the heating tank) and monitor the level before the tee to the hole 6 and to tear the tape 7, part of the water will result, when the maximum temperature of the heating stop, seal the hole 6 (and others), after cooling to room temperature, check the level, if it is higher than estimated, the system is ready. If the level is below the expected level, make the tank larger capacity and repeat all steps. Build a calibration curve, which since the summer of notice of the temperatures of 25, 20 and 15°With (for example), on the transmission housing 1 or of the sight tube to cause division at levels at these temperatures and write these temperatures divisions, build the calibration curve for this data.

Work tank.

In the case left the air, it formed a vapor mixture with saturated steam, its volume increased slightly by reducing the volume of the bag 2, the water no longer evaporates, on the ceiling of the housing 1 and on the bag upper part 2B of the bag can be formed drops, all this does not affect the operation of the tank. If you raise the level above the bottom of the neck 3, the water pressure tends to squeeze the throat 4 of the neck 3 and seep between them, but many divergent folds in it and before it prevent this, together with the sealant and compression ring on the neck 3. At the highest level, the lower part of the 2n bag 3 overlaps the neck 3, but mentioned folds retain the message of the bag 2 to the outside air.

p> Troubleshooting.

If the detected loss of water, including the schedule of average temperature, turn off the heat, looking for leaks in the system, at the same time check the tightness of the bag 2, which is inserted into the throat 4 tight flexible transparent tube so that its end was down to eye level, and monitor the occurrence in it drops, if they did, then the vapor gets into the bag 2, is squeezed out by new portions of steam into the tube where it condenses, then cool the system so that the level has dropped below the neck 3, is injected in the neck with a new bag and make her a new bag, as described. In the summer, replace the bag 2 with a new one.

Advantages: this tank has retained all the advantages of the prototype, easier to manufacture, more reliable, in addition, in the process of its use have emerged as one advantage, namely the ability to detect even slow the loss of water from the system.

1. Ceiling nespray expansion tank heating system containing a hard shell with expansion cavity communicated with the heating system, and air cavity is hermetically separated from the expansion cavity soft membrane and communicated with the ambient air, characterized in that the casing is made in the form of cans and provided with a sight tube, a membrane made in the form of air bag, throat cat who was removed from the neck of the casing and hermetically bonded with her, while in the neck of the casing tightly inserted tube with an air hole and secured screwed cap with an air hole is not aligned with the hole in the tube.

2. The way to detect slow the loss of water from the heating system, characterized by the fact that in the summer without the heat build-temperature chart system, which lay at the steady state temperature values of the water level in the sight tube of the specified tank according to claim 1 on the x-axis and temperature in the room on the axis of ordinates, expropriat obtained calibration curve, when working this system adopt this schedule for the calibration curve was averaged temperature, is applied over the corresponding values of the steady state values of the outdoor temperature, with subsequent measurements again determine the average temperature, if the level value became smaller, accept that there are water losses due to leakage or evaporation of water due to leakage of the specified air bag.



 

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