DE301856C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

In the case of water flow regulators, it is known to control the movable regulating member to use a float by changing the liquid level in the float vessel is adjusted.

The invention relates to a water flow controller of this type for hot water district heating, but is advantageous over the known similar devices

ίο from the fact that to change the liquid level in the float vessel for movement of the regulating organ according to several variable variables responsive to it, automatic adjusting devices with several the inflow of water to the float vessel and the water outflow from the same determining liquid delivery hoses in such a way are coupled that they are raised by more or less strong lifting of the outflow mouth of these hoses correctly adjust the water inflow and outflow in relation to one another as required. With such a device, the already sensitive adjusting devices almost not burdened at all, d. H. the regulating device works with minimal resistance, which is of great advantage for their precise adjustment, especially when it comes down to for hot water district heating using the waste heat from a heat engine (steam engine, Steam turbine etc.) the regulation. of the water inflow to the utilizing the waste heat Heating device (surface condenser) both on the power of the heat engine as well as from the outside cold and possibly also from the temperature of the heater to make circulating hot water dependent. It is precisely in this use that the new regulating device due to the minimal resistance, the necessary sensitivity, even with the slightest change in temperature, z. B. only by one degree, be it the outside cold, be it the circulating hot water, the water flow to be able to regulate.

The drawing shows an exemplary embodiment designed for such a hot water remote heating system of the subject matter of the invention together with a modification.

The slide valve serving as a regulating member i. (Fig. 1) is used in the assumed example to regulate the access of water to a surface condenser 2 of a steam engine and is vertically displaceable on a slotted insert piece with a hood-shaped design. It can be raised and lowered by means of a spindle 3 in a known manner by the float 4, the height of which is adjusted in the vessel 5 by the variable water level xx. In order to change the water level xx in the float vessel 5, the outflow of water from the same through a drain hose 6 can be regulated in that its outflow mouth 7 is raised or lowered by the pull rod 8 by the power regulator of the steam engine.

If, with such a device, the inflow to the vessel 5 were exactly the same as the outflow through the hose 6, the water level xx in the vessel 5 would remain at the same height. But z. B. in the case of an increase in the power output of the steam engine

Power regulator, ζ. B. the hose mouth 7 lifted, scr the height difference h between the same and the water level xx is reduced, so the amount of water running out of the vessel 5 is reduced. If the inflow of water to the vessel 5 remains constant, the water level xx must rise until the water column corresponding to the height difference h has increased so much that the inflow and outflow have become the same again. By raising the water level xx , however, the float 4 and with it the slide valve 1 are raised, so the water flow to the condenser 2 is increased, which is precisely what is desired in order to fully utilize the waste heat of the steam engine with an increase in the power output of the same.

Conversely, the sinking of the water level xx in the float vessel 5 with a constant flow of water to the same will be caused in a similar manner by a reduction in the instantaneous output of the steam engine.

Now, however, the water inflow to the float vessel 5 can also be here through the inflow pipe. 9 can be regulated as a function of a cold controller 10, in which an expansion vessel 11 with expansion fluid responding to temperature changes through the cold outside air is rinsed in the container 12 and by a piston 13 by means of a lever 14 on the movable outflow end 15 of an outflow hose 16 acts so that when the outer Air becomes colder, the piston 13 goes down and through the lever and coupling device shown the hose end 15 is lifted.

The hose 16 is connected to a water feed vessel 17 in which a water level aa is kept at a constant height by means of an overflow 18. The inflow to the vessel 17 takes place by means of the line 19. The water flowing out of the hose end 15 pours into an intermediate vessel 20, from which it flows through the pipe 9 to the float vessel 5. The amount of water withdrawn from the vessel 17 through the hose 16 corresponds to the height of the hose end 15, ie the height difference h '. A greater outside cold corresponds to a smaller height difference h ', ie a smaller water outflow from the hose end 15, i.e. because the intermediate vessel 20 is directly connected to the float vessel 5, a fall in the water level xx in the same, i.e. a fall in the float 4 and a reduction in the flow of water to the surface condenser 2.

Let the power of the steam engine be constant, so will this decrease in the water flow equate to an increase in the water temperature and thus also an increase the performance of heat dissipation bodies, radiators, etc., which are fed by the condenser 2.

In connection with the described refrigeration controller 10, a second, similar, but in this case acting as a heat controller control device can be used whose expansion vessel z. B. is washed around by the warm water emerging from the surface condenser and the outflow mouth of a second outflow hose, which also takes water from the feed vessel 17 and lets it flow out into the intermediate vessel 20, exactly as described above, depending on the hot water temperature raises or lowers. A higher hot water temperature will correspond to a greater height difference h ' and vice versa, and a greater amount of water is conveyed into the float vessel 5. As the water circulating in the heater becomes warmer, the float 4 with the venturi rises, and therefore an increased supply of water to the condenser 2, and vice versa.

By appropriately setting, be it by changing the transmission ratios on the control levers, be it by opening the connecting taps 23, 24 of the hoses 6, 16 more or less, the processes described for float regulation can also be mutually coordinated by hand so that the end result is a joint regulation of the circulation water flow. . If you want to always stay with the same example, connect a cold and a heat controller so that they act on the same liquid delivery hose, this can, as shown in the modification of FIG. Be done for example, that the two appertaining to expansion tanks 25, 26, ^Ex: pansion or contraction bring the liquids contained therein by raising or lowering of a common float 27 for expression. In this case it will be good if the expanding liquids in the vessels 25, 26 press on a quantity of mercury 28 located below in the same, which adds the effect of the expansion vessels and accordingly adjusts the height of the float 27.

Claims (1)

Patent Claims:, i. Water flow controller for hot water remote heating, with float control for the movable regulating element, characterized in that that in order to change the liquid level in the float vessel (5) Movement of the regulating member in accordance with several variable variables. - with several of them the inflow of water to the ' The float vessel and the water outflow from the same determining liquid delivery hoses (6, 16) are coupled in such a way that they correctly adjust the water inflow and outflow as required in relation to each other by lifting the outflow mouth of these hoses more or less.
2. Water flow regulator according to claim i, characterized in that when the water inflow to the float vessel is under the rule of the outside air and ■ the hot water temperature, a cold and a heat regulator transmit their effect by means of a common control element to the outflow mouth of the liquid supply hose (16). For this purpose ι sheet of drawings.