DE69024C - Equipment for water pipes to avoid incorrect information from the water meter - Google Patents

Description

IMPERIAL

PATENT OFFICE.

It is a well-known fact that the counter of a water-meter, which in common Way is inserted into the supply pipe of a house line, almost never completely stands still. Step with every opening and closing of water taps in the neighborhood due to the associated pressure changes in the penalty lines in all branches Pipes (especially if air bubbles have accumulated in them, or if special air tanks are inserted to weaken the hydrogens) small additional and moving movements of the water, which the drive mechanism of the water meter always has . affect in a right-handed sense. The pointer of the water meter is therefore moving, albeit only slowly, at least almost steadily, so that even then it is still an apparent one Indicates water consumption when the pipe behind the water meter has been at all for a long time no water was withdrawn; a circumstance which often enough gives rise to complaints from the consumer.

Attentive to this malaise from the direction of a large municipal waterworks made, I did the same by attaching a bypass pipe (after Analogy of a similar arrangement in electrical current metering devices: »secondary pipe« called) completely avoided. This pipe bypasses the water knife by putting it in front and behind it opens into the main pipe into which the knife is inserted. At the same time, an automatic valve (or Flap) device used, which the main pipe with the water knife in general keeps closed, so that the above-mentioned small movements of the water do not occur in it; as soon as the If water is taken from the pipe system behind the water meter, the valve opens automatically the main pipe and closes the secondary pipe, so that the water flows through the water knife and from it in a more ordinary way Way is measured.

Such selbstthätiges valve as it is inserted into the branching point of the Nebenschlufsrohres of the water knives in the pipes, Fig. 1. It consists of a narrow Messingcylinder A and a wide with the same screw Messingcylinder B which verlöthet in such a position with the pipes that B is above A and that the common axis is vertical. The small cylinder A has three openings a, b and c ; of these, α is connected to the inflow pipe of the water pipe from the strait pipe (see Fig. 2) and b with the main pipe in which the water meter D is located, while c leads into the large cylinder B. In the small Cylinder A moves with a certain margin, a d attached to the brass bar double cone valve H, which, when the rod d completely pulled up, c the opening or when it is fully depressed verschliefst the opening b.

In the wide brass cylinder B there is the heavy brass piston C , which can also be moved up and down in the same with a small amount of space. This piston has a vertical diameter in the middle

I.

Claims (2)

hole through which the somewhat thinner brass rod d is passed. D at the Messingstanse are mounted at e and f are two abutment, the piston C That the rod d entrains once it anstöfst during an upward movement to e, and also the same depresses when he hangs up at f in a downward movement. At the upper end of the cylinder B , the opening g leads to the bypass line. The game of the apparatus is as follows: If all the taps of the house line are closed, the piston C sinks downwards due to its weight and presses the valve h through the rod d onto the opening b, so that the main pipe with the water meter D against all of them on the coming water stream is complete. If, as a result of such a hydrogen, there is initially a small movement of the water in the sense that it tends to penetrate into the pipe system of the house pipe, then it lifts the piston C a more or less great distance, and the whole movement of the water goes through the bypass pipe g , Fig. 2. The kickback immediately afterwards returns piston C to its rest position. A movement of the counter is excluded as soon as a sufficient distance between the abutments e and f is ensured from the outset. If, on the other hand, a tap k, Fig. 2, is opened in the house behind the water meter, the water first pushes the piston C upwards as well, whereby a certain amount of water, which corresponds to this piston movement, passes through the bypass line without passing the water meter . However, as soon as the piston reaches the abutment e , because of its larger cross-section, the valve lifts from the opening b and leads it towards the opening c, whereupon the water takes its way through the main line and passes the water meter. When the cock k is finally closed again, the piston C sinks down as a result of its weight; the valve releases the opening c and a small amount of water (approximately equal to the above-mentioned small amount of water which did not go through the water knife when the tap was opened) now subsequently passes the water knife on the. Paths b D g, Fig. 2, until the valve h has closed the lower opening b . The secondary valve described here can be simplified by the fact that, instead of the double cone valve, a second valve for the opening g is attached to the lower end of the rod d; the two cylinders A and B can then be combined into a single cylinder, the clear width of which corresponds to that of cylinder B. Patenτ claim: A device for water pipes to avoid incorrect information by the water meter, characterized in that the space A of a double-seat piston valve is connected to the main line through a pipe α , through a valve opening b with the water meter line and through a valve opening c with a bypass line to the water meter line so that in the event of bumps in the main line the feed line to the water meter remains closed, as the piston C moves between the stops e and f of the valve rod d , whereas when a drain cock k is opened, the piston C is lifted due to the excess pressure, the feed line to the water meter opened and the bypass line is closed. 1 sheet of drawings.