DE728898C - Heating system - Google Patents

Description

Heating system The invention relates to a heating system with two heat generating systems, which heat in the form of hot water at least to a consumption system. It is characterized in that in the flow line the one heat generation system in accordance with the pressure in. The flow line the control unit controlled by the consumption system and in the flow line of the others Heat generation system: a regulating organ influenced according to its water content is arranged and that in, the return lines of both heat generation systems Rsgelorgane are available, which depend on the pressure in the return line of the consumption system being controlled.

An example of the subject matter of the invention is simplified on the drawing shown.

The consumption system V is from the heat generation systems E1 and E'2 supplied with heat in the form of hot water.

The heat generation system E'1 has an exhaust gas boiler i, which means the pump 16 cold water from the memory q. is fed. The hot water or the steam flows through a control element 18 into the memory ¢: The control element influences the amount flowing through according to the pressure in such a way that at higher pressure an increased, but at lower pressure only a reduced amount flows through.

By means of the pump 2o, hot water is supplied from the storage tank through the line Hl led into the consumption system V. Cooled water is taken from the consumption system introduced through the line 1 (l below into the memory q. To a constant To maintain the temperature of the water fed to the consumption system V, - will with the help of a influenced by the temperature at the point 30 in the flow line Organ 22 from the return line I <i the hot water in the line I-Ii More cold water is added as the temperature rises, and less cold water is added as the temperature falls.

In the flow line Hi, a control element 9 is switched on, which is shown in Depending on the pressure at point z5 of the flow line, this is influenced by that its cross-section is reduced with increasing pressure and enlarged with decreasing pressure will.

In the return line I (1 there is a control element io, which depending on the pressure at point 27 in the back Running line is influenced in such a way - that with increased pressure an enlarged and hot reduced pressure Pressure .ein reduced Durchflußquerschni.tt arises, so that in the return line l (1 an invariable target pressure is maintained. The target pressure to be set -is set larger or smaller by the impulse organ .8, which the in the memory recorded heat integrating. If the heat content is smaller, the organ will io set to a higher target pressure than with a higher heat content.

The heat generation system F_. has a fire-heated boiler e, the steam of which passes through a superheater 3 into the water of the storage tank 5. The feed water for the boiler 2 is taken from the bottom of the reservoir 5 with the aid of the pump 17 and returned to the boiler via the control element 26. The regulating element is influenced by the float 29 in such a way that the cross section is reduced when the water level in the Kesse12 rises and is increased when the water level falls. A portion of the @ .Vassers conveyed by the pump 17 reaches the vapor space of the memory 5 via a control element 13. The control element is influenced in accordance with the pressure in the memory. When the pressure rises, the cross-section of the valve becomes larger, and when the pressure falls, a smaller cross-section occurs.

Through the line H. the memory is left by means of the pump 2i Removed water and supplied to the consumption system V. Cooled water arrives through the line (2 back down into the storage tank 5. To regulate the temperature of the water reaching the consumption system, a circulating element 23 is provided, which with increasing temperature at the point 3 i of the flow line H increased a, but when the temperature falls, there is less cool water than in the pipe H. added to flowing hot water.

In the supply line H2 there is an organ 15 at: geordnie, t, whose flow cross-section and decreased by the float i i when the water level in the memory 5 falls is increased when the water level rises.

In the return line I (2 eile I ', regulating organ 12 is provided, which influenced as a function of the pressure at point 28 in the return line is that with increasing pressure of the flow cross, clinitt increases and with decreasing Pressure of the flow cross-section is reduced, so that in front of the valve a constant Target pressure is set. The target pressure is determined by the heat content of the storage tank integrally detecting impulse organ 14 so influenced that with a small heat content a higher target pressure is set than with a high heat content. Via the line.lo the impulse organ 14. is still with the display instrument q.1 in the vicinity of the boiler tied together. This creates the possibility of adjusting the boiler according to the heat content to be heated in memory 5.

If the water level is too high or too low, it will also open the organ 12 exerted a limit impulse from the swimmer i i, the dependence of pressure and heat content. When the water level is partly high, the organ becomes i2 completely closed and completely opened if the water content is too low.

Both in the supply lines Ni and H., as well as in the return lines I (1 and I (= are each a shut-off valve 32, 33 or 3.a., 35 and each a non-return valve 36, 37 or 38, 39 arranged, which the system z. B. in the event of a pipe rupture or other regularities protect against leakage.

The memory -. and 5 are by the Sichrrlieitsven.til: e, lo and : 11 protected against high pressure.

The consumption system V consists of a number of individual heat consumers Vj, V._ V; to which hot water is fed through the flow line A, while through the return line B the cooled water - again to the heat generators got.

The heat generation systems E'1 and and the consumption system can Set up separately from each other and connected by long-distance lines be.

The system shown works as follows: Does the heat generation system El to ili energy, d. H. if the storage tank .l contains a small amount of heat, the target pressure to which the regulating element io regulates is thus determined by the impulse element g raised. There is then a greater - throttling in the 'line I (1, so that less cold water reaches the storage tank from the consumption system. First of all, an unchanged amount of water is supplied to the storage tank through the line HI removed so that the mirror sinks; at the same time the level in the store rises 5 of the heat generation system E '.. The float pulse generator i i then becomes the Control organ 15 is more open, in borderline cases, the control organ 12 is even in the Return line 1 (z.

The consumption system V is thus supplied with a reduced amount of water, which can only flow off to a reduced extent to the memory .1, so that in the overall consumption system V the pressure begins to rise. This pressure increase represents of the Job 25 of the line Hi from the Durchflußquerschni.tt of the control organ 9 so much smaller until the liquid level in memories ¢ and 5 is back to have set normal height. With the occurrence of this state of equilibrium, the Storage tank 4 of the heat generation system egg - less hot water removed and less Cold water is supplied so that its heat content is reduced to the necessary level can increase. At the same time, however, there is a greater extraction of heat in the heat generation system E2, which extends from the impulse organ via the. Line 40 on display: instrument 41 applies makes, so that this display according to 'the boiler 2 are fired stronger can.

If the storage tank 4 of the heat generation system El receives too much heat, se -is the target pressure of the regulating member io lowered by the pulse generator S and therefore from the consumption system V through the line hl to an increased extent cold Water introduced into the memory 4. First, however, remains the amount of the 4. hot water withdrawn from storage tank, still unchanged. This will raise the water level in the memory 4. aM lifted, -during the same time the mirror in the memory 5 of the Plant E. lowers. When lowering the level in the memory 5 is by the Schwimm.erimpulsorgan i i the control element i 5 throttled more, so that a reduced amount of water from the memory 5 is discharged into the consumption system V.

In the pipe system of the consumption system begins as a result of the decreased Feed. The pressure to drop. At point 25, the falling pressure causes an opening Des. Control organ 9, so that the memory 4 removed hot water to an increased extent until the mirrors in memories 4 and 5 are back to the necessary height set. to have. When the new steady state is reached, the memory 4. Extracted heat, so that its normal heat content is maintained remain. However, less heat is extracted from the storage tank 5 of the heat generation system E2, so that its heat content begins to "increase". The increase in heat content can read on display instrument 41 and after reading the boiler e correctly fired will.

If the heat content in the heat generation system E2 is too low of the memory 5, e.g. B. by sudden increase in consumption in the consumption system V, the setpoint pressure of the regulating member 12 is increased by the pulse generator 14 and thereby reduced its flow cross-section. From the consumption system V flows so first to the memory 5 a reduced amount of cold water. First will but the @taken hot water.sermen has not yet been changed, but. just the mirror lowered in memory 5 and, as a result, the level in memory 4 upscale.

By lowering the level, the float organ i i causes the Control element 15 throttled so that less hot water is taken from the memory 5. A new inertia then arises, zlist: and with reduced heat extraction, which ensures the necessary heat content. As a result of the reduced hot water supply from the system E. after the consumption system V, the pressure in the line system drops of system V, so that from point 25 the flow cross section of the control organ 9 is enlarged. As a result, the memory 5 of the heat generation system is increased to a greater extent El hot water withdrawn and thus the needs of the consumption system V covered. Simultaneously- the lowering of the heat content of the memory 5, which initiates the control process Instrument 41 is displayed, whereupon the Kess212 eats to heat accordingly more strongly.

If the heat content of the memory 5 of the heat generation system E2 begins to rise above the normal level, is initially triggered by the pulse generator 14 the target pressure of the regulating member 12 is reduced, so that the cable cross-section is increased -will and the memory 5 flows to an increased extent cold water. This begins the level in the memory 5 to rise and vice versa the level in the memory,. to sink. When the level in the memory 5 rises, the. Float impulse: encoder i i set an enlarged cross-section on the control element 15 and thereby the mirror returned to normal levels in both stores.

At the same time, however, there is also increased heat in the memory 5 removed so that its heat content is again reduced to the necessary level. Furthermore, as a result of the display on the instrument .4 1, the firing of boiler 2 is set accordingly muffled.

If the heat content in both heat generation systems Ei and E2 is too low is present, according to the display .des instrument 41, the boiler is so strong to be heated until both stores q. and 5 the normal heat content is available again is. The normal display on the instrument 4 i will only appear when both Memory, including memory 4, regained its normal content. Own both Heat generation systems El and E. at the same time too large Heat content, the safety valves 4o and ..l must be blown off. To the At the same time, according to the display on the instrument 4i, the boiler 2 is in a reduced state Measure to heat.

Should the pump 20 fail, the check valve 136 takes care first ensure that no water backwards through the line Hl into the memory 4 can. The float pulse generator i i of the memory 5 also ensures that the mirror height is kept within the normal limit in both stores, d. H. that the Storage 4 is not flooded and storage 5 is not pumped out.

If the pump 2i of the heat generation system El fails, the check valve 37 prevents first a return flow of hot water from the system V into the memory 5 of the Heat generation system E2. At the same time, the reservoir 5 is flooded as a result prevents the regulating element 12 from being closed when the water content of the memory is too high will. Operation is then maintained solely by the heat generation system El. Even in the event of a pipe burst, the non-return devices in lines I (1 and I (2 and the regulators 9 and 15 prevent the memory from running empty.

Claims (4)

PATENT CLAIMS: i. Heating system with two heat generation systems, which dissipate heat in the form of hot water to at least one consumption system, characterized in that in the flow line (Hl) of the one heat generation system (El) a depending on the pressure in the flow line (A) of the consumption system (V) controlled regulating element (9_) and in the flow line (H2) of the other heat generating plant (E2) a regulating element (15) influenced according to its water content is arranged and that in the return lines (I (1 and I (2)) of both heat generating plants (El and E2 ) Control organs (io and 12) are available, which are controlled depending on the pressure in the return line (B) of the consumption system (V). 2. Heating system according to claim i, characterized in that the P # egeiorgan.e (i o and 12) in the Return lines (I (1 and I (2)) additionally depending on the heat content the heat generating system influenced pulse generator (8, 14) can be influenced. 3. Heating system according to claim i, characterized in that at least one of the Heat generation layers (E2) have an instrument (41) indicating the heat content, after its display, the heat generation system is fired. 4. Heating system after Claim i, characterized in that between the flow line and the return line at least one heat generation system (El or E2) a circulating element (22 hzw: a3) is arranged, the more or less cool depending on the flow temperature Return water mixed with the flow water.