Fire-fighting pressure water storage device and fire-fighting water supply system capable of replacing high-position fire-fighting water tank

Abstract

The application discloses a fire-fighting pressure water storage device which can replace a high-position fire-fighting water tank, comprising a pressure water tank and a diaphragm; the diaphragm divides the inner cavity of the pressure water tank into a fire-fighting water supply cavity and a pressure control cavity; the fire-fighting water supply cavity is provided with a fire-fighting interface for being connected with a fire-fighting water supply pipe network; and the pressure control cavity is provided with a pressure control interface for being connected with a municipal water supply pipe network. The application further discloses a fire-fighting water supply system, comprising a fire-fighting water supply pipe network, a municipal water supply pipe network and the fire-fighting pressure water storage device; the fire-fighting water supply pipe network is connected with the fire-fighting interface of the pressure water tank, the municipal water supply pipe network is connected with the pressure control interface of the pressure water tank; a fire-fighting main pump is arranged in the fire-fighting water supply pipe network; and an electric contact pressure gauge is arranged on the pressure water tank. The fire-fighting pressure water storage device can replace the high-position fire-fighting water tank, and does not need a large number of air pressure water supply facilities with large capacity, and can supply water to the fire-fighting water supply pipe network by using the natural water pressure from the municipal water supply pipe network.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of water supply equipment, and particularly relates to a fire-fighting pressure water storage device capable of replacing a high-position fire-fighting water tank and a fire-fighting water supply system. BACKGROUND

[0002] For municipal public facilities or buildings such as tunnels, subway stations and underground buildings, the buildings are generally underground and are buried at a depth of tens of meters or even hundreds of meters, and the upper part is often used for other purposes, so it is difficult to set a high-position fire-fighting water tank. The fire-fighting water supply system of such a building generally adopts a form of directly absorbing water from a municipal water supply network by a fire-fighting pump, and the municipal water quantity and water pressure often meet the stable pressure requirements of the fire-fighting facilities, and some even meet the requirements of a constant high-pressure fire-fighting water supply system. However, in order to ensure the safety and reliability of domestic water supply, the municipal water supply network is generally not allowed to be directly connected to the fire-fighting water supply system. If a gas pressure water supply facility is set, the number and volume of the gas pressure tanks are very large, the area of the machine room and the cost of the equipment are greatly increased, and difficulties are caused for engineering implementation. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a fire-fighting pressure water storage device capable of replacing a high-position fire-fighting water tank and a fire-fighting water supply system. The fire-fighting pressure water storage device can replace the high-position fire-fighting water tank, and does not need a gas pressure water supply facility with a large number and volume. The natural water pressure from the municipal water supply network can be used to supply water to the fire-fighting water supply network. The fire-fighting water supply system has the advantages of better intensification, shorter control process and higher safety and reliability in addition to the functions of the traditional fire-fighting system, the water storage volume and the stable pressure requirements meeting the requirements of the current specifications.

[0004] In order to achieve the above technical purposes and achieve the above technical effects, the present application realizes the following technical solutions:

[0005] A fire-fighting pressure water storage device capable of replacing a high-position fire-fighting water tank, comprising a pressure water tank and a diaphragm arranged in the pressure water tank; the diaphragm divides the inner cavity of the pressure water tank into a fire-fighting water supply cavity and a pressure control cavity; the fire-fighting water supply cavity is provided with a fire-fighting interface for being connected to a fire-fighting water supply network; and the pressure control cavity is provided with a pressure control interface for being connected to a municipal water supply network.

[0006] Further, the fire-fighting interface of the fire-fighting water supply cavity is further connected to a water outlet pipeline of a fire-fighting stable pressure device.

[0007] Further, the pressure control interface is further connected to a gas supplement pipe.

[0008] Further, an electric contact pressure gauge is further connected to the pressure water tank.

[0009] Further, the middle part of the tank body of the pressure tank is a cylindrical structure, and the two ends of the tank body are hemispherical surfaces, and the diaphragm matched with the pressure tank is a capsule-shaped diaphragm.

[0010] Further, a liquid level meter is further arranged on the pressure tank, and two interfaces of the liquid level meter are respectively connected with upper and lower ends of the vertical side of the pressure control cavity.

[0011] The application further provides a fire-fighting water supply system, which comprises a fire-fighting water supply network, a municipal water supply network and the fire-fighting pressure water storage device.

[0012] Further, the fire-fighting water supply system further comprises a fire-fighting pressure stabilizing module, the fire-fighting pressure stabilizing module comprises a fire-fighting pressure stabilizing water pump, the fire-fighting pressure stabilizing water pump is connected with the fire-fighting interface of the pressure tank through a fire-fighting pressure stabilizing device water outlet pipeline, and the electric contact pressure gauge controls start and stop of the fire-fighting pressure stabilizing water pump through the pressure signal.

[0013] Further, the fire-fighting water supply system further comprises an alarm and drainage module, the alarm and drainage module comprises a time delay device, a pressure switch and a hydraulic alarm bell, the time delay device is connected with the pressure control interface of the pressure tank through a drainage valve, and the time delay device is further connected with the pressure switch and the hydraulic alarm bell.

[0014] Further, a flow switch is arranged between the municipal water supply network and the pressure control interface of the pressure tank, and the flow switch can start the fire-fighting main pump through a switch signal.

[0015] The application has the following beneficial effects:

[0016] (1) For the case that it is difficult to set a high-position fire-fighting pressure stabilizing water tank on underground facilities or the upper part of a building, the fire-fighting pressure water storage device can be used to replace the high-position fire-fighting water tank;

[0017] (2) The fire-fighting pressure water storage device can fully utilize the effective volume of the pressure tank and use the water in the fire-fighting water supply cavity on the upper part of the diaphragm as fire-fighting water;

[0018] (3) The fire-fighting pressure water storage device blocks the connection between the municipal water supply network and the fire-fighting water supply network through the diaphragm, thereby ensuring the safety and reliability of domestic water; the fire-fighting pressure water storage device can not only maintain the water pressure of the fire-fighting water supply system in normal times and provide a pressure signal for automatic start of the fire-fighting water supply system, but also can replace the high-position fire-fighting water tank to provide fire-fighting water in the initial stage of a fire;

[0019] (4) The fire-fighting pressure water storage device of the present application can supply water to the fire-fighting water supply pipe network by using the natural water pressure from the municipal water supply pipe network without the need of a large number of air pressure water supply facilities;

[0020] (5) The fire-fighting water supply system of the present application is provided with a flow switch, which can start the fire-fighting main pump when the flow reaches a set value, thus making up for the defect that the project without a high fire-fighting water tank cannot be provided with a flow switch on the fire-fighting outlet pipe;

[0021] (6) The fire-fighting water supply system of the present application is further provided with an alarm drainage module, in which the pressure switch and the hydraulic alarm bell can play an alarm role, and the signal can be fed back to the control room, thus increasing the safety of the system.

[0022] (7) When the pressure value of the electric contact pressure gauge in the present application reaches the pump starting pressure, the fire-fighting main pump can be started, thus eliminating the need of setting a pressure starting switch on the outlet pipe of the fire-fighting water pump.

[0023] (8) The present application is further provided with a drainage valve for solving the influence caused by the fluctuation of the municipal water pressure. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the fire-fighting pressure water storage device of the present application which can replace a high fire-fighting water tank.

[0025] Figure 2 It is a structural schematic view of the fire-fighting water supply system of the present application.

[0026] In the figure, 1: pressure water tank, 101: fire-fighting water supply cavity, 102: pressure control cavity, 103: fire-fighting interface, 104: pressure control interface, 105: observation port; 2: diaphragm; 3: fire-fighting stable pressure equipment outlet pipe; 4: air supplement pipe; 5: electric contact pressure gauge; 6: liquid level meter; 7: fire-fighting water supply pipe network, 701: fire-fighting main pump, 702: fire-fighting water pool; 8: flow switch; 9: fire-fighting stable pressure water pump; 10: drainage valve; 11: time delay device; 12: pressure switch; 13: hydraulic alarm bell; 14: municipal water supply pipe network. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the protection scope of the present application can be more clearly defined.

[0028] As Figure 1A preferred embodiment of a fire-fighting pressure water storage device which can replace a high-position fire water tank; the fire-fighting pressure water storage device comprises a pressure water tank 1 and a diaphragm 2 arranged in the pressure water tank 1; the middle part of the tank body of the pressure water tank 1 is in a cylindrical structure, and the two ends of the tank body are in a hemispherical surface, and the diaphragm 2 matched with the pressure water tank 1 is in a capsule shape. The diaphragm 2 divides the inner cavity of the pressure water tank 1 into a fire water supply cavity 101 and a pressure control cavity 102. Among them, a narrow gap is formed between the vertical part of the diaphragm 2 and the inner wall of the pressure water tank 1, and a cavity with a certain volume is formed between the bottom of the diaphragm 2 and the bottom of the pressure water tank 1. The fire water supply cavity 101 has a fire interface 103 for connecting with a fire water supply pipe network; the pressure control cavity 102 has a pressure control interface 104 for connecting with a municipal water supply pipe network.

[0029] The fire interface 103 of the fire water supply cavity 101 is further connected with a fire pressure stabilizing equipment outlet pipeline 3; and the pressure control interface 104 is further connected with a gas supplement pipeline 4.

[0030] An electric contact pressure gauge 5 is further connected to the pressure water tank 1, and the electric contact pressure gauge 5 is used for measuring the water pressure in the fire water supply cavity 101.

[0031] A liquid level gauge 6 is further arranged on the pressure water tank 1, and two interfaces of the liquid level gauge 6 are respectively connected with the upper and lower ends of the vertical side of the pressure control cavity 102, so as to monitor the water level of the pressure control cavity 102.

[0032] The bottom of the pressure water tank 1 is further provided with an observation port 105 corresponding to the position of the diaphragm bottom.

[0033] The fire water supply cavity 101 of the pressure water tank 1 can be further connected with a water supplement pipeline, so as to be filled with water.

[0034] As shown in the figure, Figure 2 The application further provides a fire water supply system, which comprises a fire water supply pipe network 7, a municipal water supply pipe network 14 and the fire-fighting pressure water storage device described above; the fire water supply pipe network 7 is connected with the fire interface 103 of the pressure water tank 1, and the municipal water supply pipe network 14 is connected with the pressure control interface 104 of the pressure water tank 1; a fire main pump 701 is arranged in the fire water supply pipe network 7; an electric contact pressure gauge 5 is arranged on the pressure water tank 1; and the electric contact pressure gauge 5 is signal-connected with the fire main pump 701. According to the detected water pressure in the fire water supply cavity 101 of the pressure water tank 1, the electric contact pressure gauge 5 can control the municipal water supply pipe network 14 to supplement water to the pressure control cavity 102 of the pressure water tank 1, so as to control the water pressure in the fire water supply cavity 101 through the diaphragm 2.

[0035] A flow switch 8 is arranged between the municipal water supply pipe network 14 and the pressure control interface 104 of the pressure water tank 1, and the flow switch 8 is signal-connected with the fire main pump 701.

[0036] The fire water supply system further comprises a fire pressure stabilizing module, the fire pressure stabilizing module comprising a fire pressure stabilizing pump 9 connected with the fire interface 103 of the pressure tank 1 through a fire pressure stabilizing device outlet pipeline 3; the fire pressure stabilizing pump 9 is connected with the electric contact pressure gauge 5 through a signal connection.

[0037] The fire water supply system further comprises an alarm drainage module, the alarm drainage module comprising a time delay device 11, a pressure switch 12 and a hydraulic alarm bell 13, the time delay device 11 being connected with the pressure control interface 104 of the pressure tank 1 through the drainage valve 10, and the time delay device 11 being further connected with the pressure switch 12 and the hydraulic alarm bell 13.

[0038] In addition, in order to facilitate fire water supply, a fire water pool 702 is arranged in the fire water supply pipeline network 7 to store fire water.

[0039] Valves for controlling water flow are arranged in the fire water supply pipeline network 7, the fire pressure stabilizing module and the municipal water supply pipeline network 14.

[0040] The fire water supply system is connected with a control system, the control system receiving pressure signals of the electric contact pressure gauge and being capable of controlling the actions of the fire main pump and the fire pressure stabilizing pump through signals.

[0041] The water pressure of the fire water supply cavity 101 of the pressure tank 1 has three pressure values, i.e. the fire pressure stabilizing pump stop pressure P1, the fire pressure stabilizing pump start pressure P2 and the fire main pump start pressure P3. The start and stop of the fire pressure stabilizing pump are controlled by P1 and P2; in case of pressure leakage of the pipeline system, the fire pressure stabilizing pump is controlled to continuously supply water to stabilize the pressure, and P1 and P2 are repeatedly operated. The setting of P2 needs to be greater than the municipal water supply pressure, preferably greater than 0.1 Mpa.

[0042] Firstly, the fire water supply cavity 101 of the pressure tank 1 is filled with water through a water supply pipeline, and the pressure control cavity 102 is filled with air through an air supply pipeline 4; by adjusting the air supply amount, when the position of the diaphragm 2 can be observed at the observation port 105, the water pressure in the pressure tank 1 reaches the system highest setting value P1, i.e. the air pressure is maximum, and it is also the pressure in the case of maximum water storage in the pressure tank. When the pressure is reduced to P2 due to system leakage, the fire pressure stabilizing pump 9 is started to supply water to the pressure tank 1, and the pump is stopped when the pressure reaches P1. P1 is greater than the municipal water supply pressure (for example, the municipal water pressure at the pump house elevation is 0.35 Mpa, P1 can be taken as 0.5 Mpa, and P2 can be taken as 0.45 Mpa). Since the setting water pressure of the pressure tank 1 is greater than the municipal water supply pressure, the pipeline between the flow switch 8 and the pressure tank 1 is full of gas at ordinary times, which is used to maintain the water pressure of the fire water supply system and adjust the water pressure in case of pipeline leakage. Thus, under the condition of pressure stabilization, the water on the upper side of the diaphragm 4 is pushed by the compression and expansion of the gas to maintain the water pressure of the fire water supply system.

[0043] The lower side of the diaphragm 4 of the pressure tank 1 is inflated, only to ensure and adjust the working pressure of the fire stable pressure module; the initial inflation pressure in the pressure tank 1 is 0, the inflation gas volume is small, the water volume of the fire water supply cavity (the upper side of the diaphragm of the pressure tank) 101 can reach more than 70% of the total volume of the pressure tank, and during firefighting, the water in the pressure tank 1 can all flow to the fire water supply pipe network 7 and be fully utilized.

[0044] During a fire, the pipe system of the fire water supply system loses a large amount of water, the pressure tank 1 discharges water, and the pressure in the fire water supply cavity 101 decreases. When the pressure is lower than the pressure of the municipal water supply in the pump house, tap water from the municipal water supply pipe network 14 flows through the flow switch 8 and is supplied to the pressure control cavity 102 of the pressure tank 1. The flow switch 8 acts when reaching the set value, starts the fire main pump 701, and at the same time, the hydraulic alarm bell 13 alarms, and the signal is transmitted to the fire control room. In addition, when the electric contact pressure gauge 5 on the pressure tank 1 detects that the pressure is P3, the fire main pump 701 is also started to supply water, and P3 is preferably 0.07 MPa lower than P2. The water in the fire water supply cavity 101 (the water on the upper side of the diaphragm) can all be pushed to the fire water supply pipe network 7. The observation port 105 on the pressure tank 1 can observe the position of the diaphragm 2. The liquid level meter 6 arranged on one side of the pressure tank 1 can also observe the water level change on the side of the municipal water supply.

[0045] The municipal water supply pressure has certain fluctuation; during normal times, when the pressure rises to be greater than the water pressure of the fire water supply cavity 101 of the pressure tank 1, the excess water can enter the delay timer 11 through the drain valve 10 arranged on one side and be discharged through the drain pipe. During a fire, when the water pressure of the fire water supply pipe network decreases sharply or greatly, the municipal water supply pipe supplies a large amount of water to the pressure tank. After the delay timer 11 is filled with water, the pressure switch 12 arranged on the upper part of the delay timer 11 acts and alarms. When the municipal water supply pressure fluctuates and a small amount of tap water enters the pressure tank 1, the pressure switch 12 will not act, and the water in the delay timer 11 can be discharged through the drain port on the lower part of the delay timer 11.

[0046] The fire pressure water storage device maintains the water pressure of the fire water supply system under stable pressure conditions by the compression and expansion of the gas to push the water on the upper side of the diaphragm 2, and during a fire, the water in the fire water supply cavity 101 is pushed into the fire water supply pipe network 7 by the municipal water pressure to replace the function of the high-level fire water tank.

[0047] When the fire pressure water storage device is used as a high-level fire water tank, all the water stored in the device is pushed into the fire water supply pipe network by the tap water pressure, which can maximize the use of the space of the pressure tank, and compared with the air pressure water supply mode, greatly saves the equipment investment and machine room area.

[0048] The fire-fighting water supply system of the present application, in the safety of the fire-fighting system, in addition to having each function of the traditional fire-fighting system, meeting the current specification requirements of the water storage volume, the stable pressure requirement and the like, due to the system adding the pressure switch and the flow switch, the safety and reliability of the system is greatly improved; at the same time, due to the fire-fighting pressure water storage device being able to replace the high fire-fighting water tank and the conventional stable pressure equipment, the fire-fighting water supply system is simplified, compared to the water supply system of setting the high fire-fighting water tank, more intensive, the control process is shorter, the safety and reliability is greatly improved.

[0049] The above-mentioned is only the embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the specification and the drawings of the present application, or directly or indirectly applied in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A fire pressure water storage device that can replace a high-position fire water tank, characterized by, The pressure water tank comprises a pressure water tank body and a diaphragm arranged in the pressure water tank; the diaphragm divides the inner cavity of the pressure water tank into a fire water supply cavity and a pressure control cavity; the fire water supply cavity is provided with a fire interface for connecting with a fire water supply network; and the pressure control cavity is provided with a pressure control interface for connecting with a municipal water supply network.

2. A fire pressure water storage device to replace high-rise fire water tank according to claim 1, characterized in that: The fire interface of the fire water supply cavity is further connected with a fire pressure stabilizing device outlet pipeline.

3. A fire pressure water storage device to replace high-rise fire water tank according to claim 1, characterized in that: The pressure control interface is further connected with a gas supplement pipeline.

4. A fire pressure water storage device to replace high-rise fire water tank according to claim 1, characterized in that: An electric contact pressure gauge is further connected to the pressure water tank.

5. A fire pressure water storage device to replace high-rise fire water tank according to claim 1, characterized in that: The middle part of the tank body of the pressure water tank is a cylindrical structure, and the two ends of the tank body are hemispherical surfaces; and the diaphragm matched with the pressure water tank is a capsule-shaped diaphragm.

6. A fire pressure water storage apparatus to replace high-rise fire water tank according to claim 5, characterized in that: A liquid level gauge is further arranged on the pressure water tank, and two interfaces of the liquid level gauge are connected with upper and lower ends of vertical sides of the pressure control cavity respectively.

7. A fire service water supply system characterised in that, The fire water supply network is connected with the fire interface of the pressure water tank, the municipal water supply network is connected with the pressure control interface of the pressure water tank, the fire water supply network is provided with a fire main pump, the electric contact pressure gauge is arranged on the pressure water tank, the municipal water supply network can supplement water to the pressure control cavity of the pressure water tank according to the pressure value detected by the electric contact pressure gauge to control the water pressure in the fire water supply cavity through the diaphragm, and the electric contact pressure gauge starts the fire main pump through the collected pressure signal.

8. A fire service water supply system according to claim 7, wherein, The fire pressure stabilizing module comprises a fire pressure stabilizing water pump, and the fire pressure stabilizing water pump is connected with the fire interface of the pressure water tank through a fire pressure stabilizing device outlet pipeline; the electric contact pressure gauge controls the start and stop of the fire pressure stabilizing water pump through the pressure signal.

9. A fire service water supply system according to claim 7, wherein, The alarm and drainage module comprises a time delay, a pressure switch and a hydraulic alarm bell, the time delay is connected with the pressure control interface of the pressure water tank through a drainage valve, and the time delay is further connected with the pressure switch and the hydraulic alarm bell.

10. A fire service water supply system according to claim 7, wherein The municipal water supply network and the pressure control interface of the pressure water tank are provided with a flow switch, and the flow switch starts the fire main pump through a signal.

Images