JPH0648708U - Pump pressure regulator for fire extinguishing equipment for high-rise buildings - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rational device for fire extinguishing equipment in high-rise buildings, which appropriately adjusts the pressure of the pump installed on the upper floor. [Structure] A device for connecting a discharge pipe 4 of booster pumps p1 to pn connected to a fire extinguishing water supply pipe 1 of each floor to a suction pipe 2 via a pressure adjusting valve 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pump pressure adjusting device for fire extinguishing equipment for high-rise buildings.

[0002]

[Prior art]

 As for the sprinkler equipment installed on the higher floors, a pump p0 and booster pumps p1 and p2 are arranged on each floor A, B and C as shown in FIG. 2 and connected to the water supply pipe 1. The water supply pipe 1 is connected to sprinkler pipes w0, w1 and w2 on the floor, and n is a nozzle. a is an alarm valve. The booster pumps w1 and w2 on each floor of the upper layer have a suction pipe 2 and a discharge pipe 4 connected to the pipe 1, respectively. 5 is a check valve. A pressure adjusting valve 3 is provided on the discharge pipe 4 of the booster pump and is connected to a drain pipe s. The water tank b on each floor is provided, the water tank b on the lowest floor is provided for extinguishing fires on each floor, and the water tank b on each upper floor is a small-capacity water tank, mainly for testing of that floor.

In the indoor fire hydrant equipment, as shown in FIG. 3, a hose h with a nozzle n is connected to the water supply pipe 1 on each floor, and water is supplied to this water supply pipe 1 by a pump p0 on the lowest floor. In this way, the booster pump p3 is connected to the water supply pipe 1 at the intermediate floor D in order to keep the hose discharge pressure on the upper floor at a predetermined pressure. Also in this case, the pressure adjusting valve 3 is connected to the discharge pipe 4 of the booster pump p 3 to discharge the excess pressure water to the drain pipe s. Further, in the connection water pipe facility, as shown in FIG. 4, a hose h with a nozzle n is connected to the water supply pipe 1 on each floor, and is connected to a fire pump car m on the ground floor. In order to maintain the water discharge pressure of the hose on the upper floor at a predetermined pressure, a booster pump p4 is provided on the intermediate floor E and connected to the water supply pipe 1. Even in this case, the pressure adjusting valve 3 is connected to the discharge pipe 4 of the booster pump p4 to discharge the excess pressure water to the drain pipe s.

[0004]

[Problems to be solved by the device]

 In such equipment, the water supply pipe 1 is always filled with a certain amount of pressure water. When a fire occurs, the pumps on each floor will be operated simultaneously. When the pump is started or stopped after the fire is extinguished, the booster pump is shut off, so the suction side of the pump exceeds the allowable pressure and the pump is damaged. For this reason, conventionally, a pressure adjusting valve was connected to the discharge side of the booster pump and was discharged to the drain pipe s. If the building is high-rise, the number of booster pumps will increase, and the drainage pipe and the pipe with a large diameter will be installed, and the pipe space in the building will be required. In addition, the amount of drainage is large and it is extremely wasteful. The present invention provides a device that remedies these drawbacks.

[0005]

[Means for Solving the Problems]

 The first idea is to send water from the pump in the lowest layer to the sprinkler pipe connected to the water supply pipe and to increase the water pressure in the sprinkler pipe on the upper floor, and install a booster pump on that floor to install the water supply pipe for the water supply pipe. It is a pump pressure adjustment device for fire extinguishing equipment for high-rise buildings, which is connected to a suction pipe from the discharge pipe of this booster pump by increasing the water pressure.

A second invention is a pump pressure adjusting device for a fire extinguishing equipment for a high-rise building, which is a hose with a nozzle in place of the sprinkler pipe in the first invention.

The third invention is to install a booster pump on the floor in order to increase the water pressure of the hose with a nozzle in the water supply pipe that is connected to a fire pump on the ground to send water. It is a pump pressure control device for fire extinguishing equipment for high-rise buildings that connects the suction pipe with a pressure control valve from the discharge pipe of the booster pump so as to raise the water pressure in the pipe.

[0008]

[Operation] In the above-mentioned device, since the pressure adjusting valve is provided on the discharge side of the booster pump on each floor and is connected to the suction side of the pump, the excess pressure water boosted by the pump is re-generated. The pump sucks and circulates the water, and the sprinkler pipe for extinguishing the fire or the hose can discharge water from the nozzle at a predetermined pressure without increasing the pressure more than necessary.

[0009]

【Example】

 FIG. 1 shows a device of the present invention, in which a water supply pipe 1 is a pipe for connecting to the pump p0 on the lowest floor or a fire pump car to feed water. A sprinkler pipe or a hose with a nozzle is connected to the water supply pipe 1. A check valve 5 is provided in the middle of the water supply pipe 1, and a discharge pipe 4 and a suction pipe 2 of the booster pumps p1 to pn are connected before and after the check valve 5. The discharge pipe 4 is connected to the suction pipe 2 via a pressure control valve 3. Reference numerals 6 and 7 are check valves. The suction pipe 2 is connected to the water tank b, and a part of the discharge side pipe 4 of the pump is returned to the water tank b through the orifice 8.

[0010]

[Effect of device]

 According to this invention, in sprinkler equipment, indoor fire hydrant equipment, and connected water pipe equipment that are fire extinguishing equipment for high-rise buildings, when pumps are operated all at once during a fire, each booster pump is not damaged and pressure adjustment is performed. Since the valve is not connected to the drain pipe, the cost of installing the drain pipe and its equipment space can be saved, and it is an economical device that does not drain water wastefully.

[0011]

[Brief description of drawings]

FIG. 1 is a piping system diagram showing a main part of a pressure adjusting device in a booster pump of the present invention.

FIG. 2 is a piping system diagram of a conventional sprinkler facility.

[0012]

FIG. 3 is a piping system diagram of a conventional indoor fire hydrant facility.

[0013]

FIG. 4 is a piping system diagram of a conventional connected water pipe facility.

[Procedure amendment]

[Submission date] November 18, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a piping system diagram showing a main part of a pressure adjusting device in a booster pump of the present invention.

FIG. 2 is a piping system diagram of a conventional sprinkler facility.

FIG. 3 is a piping system diagram of a conventional indoor fire hydrant facility.

FIG. 4 is a piping system diagram of a conventional connected water pipe facility.

Claims (3)

[Scope of utility model registration request] 1. A water pump is provided from the lowermost layer to a sprinkler pipe connected to the water supply pipe, and a booster pump is provided on the floor to increase the water pressure of the water supply pipe in order to increase the water pressure of the sprinkler pipe on the upper floor. And then
This booster pump is a pump pressure adjustment device for fire extinguishing equipment for high-rise buildings that connects to the suction pipe from the discharge pipe of the booster pump. 2. A pump pressure adjusting apparatus for fire extinguishing equipment for a high-rise building according to claim 1, wherein a hose with a nozzle is used instead of the sprinkler pipe. 3. A water supply pipe connected to a fire pump on the ground for supplying water is provided with a booster pump on the floor so as to increase the water pressure of the hose with a nozzle so as to increase the water pressure of the water supply pipe. In addition, the booster pump is a pump pressure adjustment device for fire extinguishing equipment for high-rise buildings that connects to the suction pipe from the discharge pipe of the booster pump.