DE654810C - Device for monitoring the water supply in the supply line of a fire extinguishing pump - Google Patents

Description

Device for monitoring the water flow in the supply line a fire extinguisher pump The invention relates to a device for monitoring the flow of water in the supply line of a fire pump. It is specially marked by a arranged in the supply line container with devices that show the rise and fall of the water level in the tank.

As devices for indicating the rise and fall of the water level in the container, for example, pressure gauges, acoustic devices, e.g. B. whistles, Sirens, rattle bells, or optical devices, e.g. B. electric signal lamps are used will.

In a further embodiment, the device according to the invention to regulate the speed of a fire extinguishing pump, depending on the water flow Serve in the supply line by placing in the container which is in the supply line is arranged, a membrane is installed, the feed via a linkage regulates the propellant to the drive motor of the pump.

It is a similar purpose, endQ monitoring device the water inflow in the feed line of a pump has already become known. In this case, a signal ball made of rubber or the like is arranged on the suction pipe. In the event of pressure fluctuations in the suction line, this signal ball either pulls itself out more together or it expands more. This way the observer becomes the activity displayed on the pump. However, due to the risk of the Signal balls in supply lines, in which an overpressure also occurs, Not used. It also has the disadvantage that the numerical amount of the overpressure or underpressure in the line is not recognizable.

In the drawing are some exemplary embodiments of the subject matter of the invention shown.

Fig. R shows the arrangement of a container according to the invention in the supply line from the hydrant to the fire pump.

Figs. A and 3 show an embodiment in cross section and in plan view with underpressure and overpressure valves arranged in the container lid for operation acoustic signaling devices.

Fig.q. shows a view of the arrangement of the container according to FIG Invention directly on the fire pump in connection with a controller for the supply of the propellant to the drive motor.

The Fig.5 shows in section an embodiment for the training the container lid with a membrane and the connecting rod to the controller.

Fig. 6 shows in section the same design as Fig. 5, however with electrical contacts for controlling an optical signal device.

The one in the feeder line r (Fig. I) by one or more Hydrant 2 resp. from a feed pump to the fire pump 3 leads, built-in container 4.5 has one or more hose connectors 6 for the supply of the water -and a hose-nozzle 7 for the connection line to the fire extinguisher 3. On the lid 8 of the container 5 is an overpressure-vacuum gauge., appropriate. If in the container 4., 5 a '; Adjusts the negative pressure on the drive motor the fire extinguisher pump @ e 3 a lower speed by throttling the propellant supply set, but if there is overpressure, the speed is increased accordingly. The container 4, 5 also acts as an air tank to compensate for irregularities in the water flow. If several connection pieces 6 are arranged, a non-return valve must be used for each connection piece io (Dept. 2) should be provided so that water flows back into lines with lower pressure height is prevented.

About the maintenance of the fire extinguisher under strongly changing operating conditions To make it easier, a vacuum valve i i is built into cover 8 (Fig. 2 and 3), on which an acoustic signal device 12 sits, for. B. a whistle that falls when falling Pressure height in the container gives a resounding sign of a certain timbre. Increases on the other hand, when larger amounts of water are supplied, the pressure in the container recovers, so closes the valve i i, and when a certain pressure level is exceeded it is through a pressure relief valve 13 which is also arranged in the cover 8 and which is passed through a dip tube 14 is connected to the water space in the lower part of the container, water will escape. An acoustic signal device 15 can also be attached there, for example a mechanically operated rattle bell. The operator is made aware of the various Signals are made recognizable whether to increase or decrease the pump speed is.

With mobile fire pumps you become in contrast to the portable arrange the container according to the invention directly on the suction port of the pump 3o (Dept. 4). In this case, it is advantageous to build into the cover 8, for example a pressure piston or membrane 16 (Section 5), the Spindles117 of which by means of a Angle lever i 8 via a connecting rod leading to the fuel regulator i g, 21 (section 4) 22 influences the propellant supply to the drive motor 2o.

In special cases, for example with remote controls, you will instead of active signaling devices electrically controlled @ .n @ .tic signaling devices 23 (Section 6), whose contacts 24, 25 are connected to the spindle 17 of the membrane 16 seated mating contact 26 depending on the prevailing in the container 5 Overpressure or underpressure can be closed. The light signal device can be known in Way from several separate electrical lamps or from a housing 23 with different colored discs 27, 28 exist, behind which the lamps are arranged.

Claims (5)

P.1 T 131T -1 \ 51 'I2 l' (, 'l l I: I. Device for monitoring the water flow in the supply line of a fire pump, characterized by one in the Supply line (I) arranged container (5), the devices (9, I2, I5, I6, I7, 24, 25, 26, 26, 27, 28) that carries the rise and fall of the water level in the container. 2. Apparatus according to claim i, characterized in that as Device for displaying the rise and fall of the water level in the tank (5) a pressure gauge (9) is provided. 3. Apparatus according to claim i, characterized in that that as devices for indicating, rising and falling of the water level Acoustic devices, for example signal whistles (12, 15), are provided in the container (5) are. 4. Apparatus according to claim i, characterized in that optical devices, for example electrical signal lamps (27, 28), are provided as devices for displaying the rise and fall of the water level in the container (5). 5. Device for regulating the speed of a fire extinguishing pump depending on the water inflow of the supply line, characterized by one arranged in the supply line (i) Container (5), in which a membrane (16) is installed, which via a rod (17, 18, 22) regulates the supply of the propellant to the drive motor (2o) of the Pmnpe (3o).