Water pump house anti-flooding system

Abstract

The utility model belongs to the technical field of fire safety, and discloses a water pump house anti-flooding system which comprises a fire pool and a fire pump house arranged on one side of the fire pool, an overflow horn mouth is arranged in the fire pool, and the top of the overflow horn mouth is flush with the overflow water level in the fire pool. A drainage ditch is arranged in the fire-fighting water pump room and communicated with the overflow horn mouth through a drainage pipe, a pressure difference transmitter is arranged in the fire-fighting water pool, the pressure difference transmitter and the alarm bell are both in signal transmission with the liquid level control cabinet, and the liquid level control cabinet and the alarm bell are both arranged in a fire-fighting control room. The water outlet end of the water inlet pipe penetrates through a top plate of the fire pool and then extends into the fire pool, and the water inlet end of the water inlet pipe is sequentially communicated with the hydraulic water level control valve, the normally-open type electromagnetic valve, the switch valve set and the municipal water supply pipe. The maintenance cost and the waste of water resources are reduced, and remarkable economic benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of fire safety technology, specifically relating to a system that can prevent water pump rooms from being flooded. Background Technology

[0002] In practical engineering applications, the water level in the fire water tank needs to be kept stable at the highest effective water level line. If the water level in the fire water tank exceeds the highest effective water level line, the hydraulic water level control valve on the water tank inlet pipe is usually closed by the liquid level float valve set at the highest effective water level line through mechanical action, thereby blocking the continuous injection of municipal water into the fire water tank.

[0003] The reasons for the failure of the level float valve include: damage or deformation of the float will lead to insufficient buoyancy and failure to control the valve normally; the connecting rod is stuck due to rust or debris, which prevents the float from moving normally; impurities in the municipal water supply network cause the level float valve to not close tightly; and wear or aging of the float and valve after long-term use will lead to a decline in the function of the level float valve.

[0004] Due to the malfunction of the float valve, municipal water will continuously flow into the fire water tank, causing it to overflow. When the overflow flare cannot accommodate the excess water in the fire water tank, the drainage ditch of the fire pump room will also be unable to discharge the excess water in time. Since the fire pump room is unattended, water leakage will occur, frequently causing flooding of pumps and other equipment, resulting in serious economic losses. Utility Model Content

[0005] To address the technical problems existing in the prior art, this utility model provides a flood prevention system for pump rooms, ensuring the safe operation of the entire fire water room, reducing maintenance costs, and avoiding water waste.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flood prevention system for a pump room, comprising a fire water tank and a fire pump room located on one side of the fire water tank. The fire water tank is provided with an overflow horn, the opening of which is arranged facing upwards, and the top of the overflow horn is level with the overflow water level in the fire water tank. The fire pump room is provided with a fire pump and a drainage ditch. The drainage ditch is connected to the overflow horn through a drainage pipe and is located close to the fire water tank.

[0007] The fire water tank is equipped with a differential pressure transmitter, which transmits signals to the level control cabinet. The differential pressure transmitter sends the pressure signal to the level control cabinet. The level control cabinet transmits signals to the alarm bell. When the water level in the fire water tank exceeds the overflow level, the level control cabinet releases an alarm signal and the alarm bell sounds, reminding staff to go to the scene as soon as possible.

[0008] The liquid level control cabinet and the alarm bell are both located in the fire control room, which ensures that the liquid level control cabinet is not easily damaged and is easy to maintain. The alarm bell is close to the staff and can achieve the warning effect.

[0009] This system also includes an inlet pipe. The outlet end of the inlet pipe passes through the top slab of the fire water tank and extends into the fire water tank. The inlet end of the inlet pipe is connected in sequence to a hydraulic level control valve, a normally open solenoid valve, a switch valve assembly, and the municipal water supply pipe. The hydraulic level control valve, normally open solenoid valve, and switch valve assembly are connected in series through pipelines. If any one of the valves is closed, the inlet pipe cannot supply water to the fire water tank. The lowest position of the float of the hydraulic level control valve is level with the highest effective water level in the fire water tank. When the water level in the fire water tank exceeds the highest effective water level, the float of the hydraulic level control valve rises, the hydraulic level control valve closes, and the inlet pipe stops supplying water to the fire water tank.

[0010] The highest effective water level in the fire water tank is located below the overflow water level. The hydraulic water level control valve serves as the first line of defense, and the overflow flare serves as the second line of defense.

[0011] The normally open solenoid valve transmits signals to the level control cabinet, which then controls the opening and closing of the normally open solenoid valve.

[0012] Preferably, the outlet end of the inlet pipe is arranged higher than the overflow water level in the fire water tank to facilitate water supply.

[0013] The hydraulic level control valve, normally open solenoid valve, and on / off valve assembly are all located in the valve well for unified management and convenient maintenance.

[0014] Compared with existing technologies, the specific advantages of this invention are as follows: When in use, this invention enables water level monitoring and early warning. By installing a differential pressure transmitter in the fire water tank, the system can monitor water level changes in real time and transmit the water level information to the level control cabinet. When the water level reaches the set overflow level, the system will trigger an alarm to remind on-duty personnel to handle the situation promptly. The system will also output a current signal to close the normally open solenoid valve on the water tank inlet pipe. This effectively avoids flooding accidents in the fire pump room caused by excessively high water levels and effectively solves the problem of equipment flooding in the fire pump room due to malfunctioning level float valves. It also reduces maintenance costs and water waste, resulting in significant economic and social benefits. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram, 1 is the fire water tank, 2 is the float, 3 is the inlet pipe, 4 is the municipal water supply pipe, 5 is the switch valve assembly, 6 is the normally open solenoid valve, 7 is the hydraulic water level control valve, 8 is the valve well, 9 is the fire control room, 10 is the liquid level control cabinet, 11 is the overflow bell, 12 is the fire pump room, 13 is the drainage ditch, 14 is the differential pressure transmitter, 15 is the alarm bell, water level A is the overflow water level, and water level B is the highest effective water level. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] like Figure 1 As shown, a flood prevention system for a pump room includes a fire water tank 1 and a fire pump room 12 located on one side of the fire water tank 1. The fire water tank 1 is provided with an overflow horn 11, with the opening of the overflow horn 11 facing upwards and the top of the overflow horn 11 being level with the overflow water level in the fire water tank 1. The fire pump room 12 is provided with a fire pump and a drainage ditch 13. The drainage ditch 13 is connected to the overflow horn 11 through a drainage pipe and is located close to the fire water tank 1. The overflow horn 11 can promptly discharge water in the fire water tank 1 that exceeds the overflow water level to the drainage ditch 13 in the fire pump room 12, so as to ensure that the water level in the fire water tank 1 is always at the overflow water level.

[0019] The fire water tank 1 is equipped with a differential pressure transmitter 14. The differential pressure transmitter 14 transmits signals to the level control cabinet 10. The differential pressure transmitter 14 can send corresponding standard current signals, such as 4-20mA, according to the different water levels in the fire water tank 1. This signal can be transmitted to the level control cabinet 10 in the fire control room 9. The duty personnel in the fire control room 9 can then monitor the water level in the fire water tank 1 in real time through the display screen of the level control cabinet 10.

[0020] The liquid level control cabinet 10 transmits signals to the alarm bell 15. When the water level in the fire water tank 1 exceeds the overflow level, the liquid level control cabinet 10 releases an alarm signal and the alarm bell 15 sounds, reminding staff to go to the scene as soon as possible.

[0021] The liquid level control cabinet 10 and the alarm bell 15 are both located in the fire control room 9. This ensures that the liquid level control cabinet 10 is not easily damaged and is easy to maintain. The alarm bell 15 is close to the staff and can promptly notify the staff on duty of the situation where the water level in the fire water tank 1 is too high, so that the staff on duty can react quickly.

[0022] The system also includes an inlet pipe 3. The outlet end of the inlet pipe 3 passes through the top plate of the fire water tank 1 and extends into the fire water tank 1. The inlet end of the inlet pipe 3 is connected in sequence to the hydraulic water level control valve 7, the normally open solenoid valve 6, the switch valve group 5, and the municipal water supply pipe 4. The hydraulic water level control valve 7, the normally open solenoid valve 6, and the switch valve group 5 are connected in series through pipelines. If any one of the valves is closed, the inlet pipe 3 cannot inject water into the fire water tank 1.

[0023] The switch valve group 5 is a valve group composed of conventional valves. The switch valve group 5 can manage the flow of water in the inlet pipe 3 by controlling the opening and closing of the valves, and can also maintain the system pressure balance between the municipal water supply pipe 4 and the inlet pipe 3.

[0024] The hydraulic water level control valve 7 is mechanically connected to the float 2 in the fire water tank 1 via a hydraulic rod. The lowest position of the float 2 in the hydraulic water level control valve 7 is level with the highest effective water level in the fire water tank 1. When the water level in the fire water tank 1 exceeds the highest effective water level, the float 2 in the hydraulic water level control valve 7 rises, the hydraulic water level control valve 7 closes, and the inlet pipe 3 stops supplying water to the fire water tank 1. When the water level in the fire water tank 1 is lower than the overflow level, the hydraulic water level control valve 7 opens, and the inlet pipe 3 begins to inject water into the fire water tank 1.

[0025] Among them, the highest effective water level in the fire water tank 1 is arranged below the overflow water level, the hydraulic water level control valve 7 serves as the first line of defense, and the overflow horn 11 serves as the second line of defense.

[0026] The normally open solenoid valve 6 is connected to the liquid level control cabinet 10 in the fire control center via a signal line. The opening and closing status of the normally open solenoid valve 6 is controlled by the signal sent by the liquid level control cabinet 10.

[0027] The level control cabinet 10 controls the opening and closing of the normally open solenoid valve 6.

[0028] Preferably, the outlet of the inlet pipe 3 is arranged above the overflow water level in the fire water tank 1 to facilitate water supply.

[0029] The top of the differential pressure transmitter 14 is positioned above the overflow water level in the fire water tank 1, so that the water level can be monitored in a timely manner even under special circumstances.

[0030] The hydraulic water level control valve 7, normally open solenoid valve 6, and switch valve group 5 are all placed in the valve well 8 under the outdoor ground for unified management and convenient maintenance.

[0031] Currently, the fire pump room 12 and fire water tank 1 of the building are located in the underground space. The water in the fire water tank 1 comes from the outdoor municipal water supply network. When municipal water is continuously injected into the fire water tank 1, when the water level rises to the overflow level of the fire water tank 1, a large amount of water from the fire water tank 1 will flow into the overflow horn 11 located at the overflow level, and then into the drainage ditch 13 located in the fire pump room 12. This ensures that the water in the fire water tank 1 does not overflow and damage the fire pumps in the fire pump room 12. At the same time, a float ball 2 is installed at the overflow level of the fire water tank 1. The float ball 2 controls the opening and closing of the hydraulic water level control valve 7 by the rise and fall of the liquid level. When the water level of the fire water tank 1 rises, the float ball 2 will rise due to the buoyancy of the liquid. When the float ball 2 rises to a certain position, it will close the hydraulic water level control valve 7 through a hydraulic mechanical mechanism, thereby preventing the liquid from continuing to flow in. Conversely, when the water level in fire water tank 1 drops, the float will descend, causing the hydraulic water level control valve 7 to open via a hydraulic mechanical mechanism, allowing liquid to flow in.

[0032] When the float valve in the fire water tank 1 malfunctions, i.e., the water level in the fire water tank 1 exceeds the overflow level, the hydraulic water level control valve 7 cannot be shut off in time, and the overflow horn 11 cannot discharge the excess water from the fire water tank 1 in time, the differential pressure transmitter 14 installed in the fire water tank 1 will transmit a current signal to the level control cabinet 10 by sensing the water pressure change. The electrical signal indicating that the water level in the fire water tank 1 has reached the overflow level is preset in the level control cabinet 10. When the differential pressure transmitter 14 outputs this electrical signal, it means that the water level in the fire water tank 1 has exceeded the overflow level. After receiving this electrical signal from the differential pressure transmitter 14, the level control cabinet 10 will send two signals. One signal is output to the normally open solenoid valve 6, which will quickly respond and close to prevent water from the water tank inlet pipe 3 from continuing to flow into the fire water tank 1. The other signal is output to the alarm bell 15, which will alarm and remind the duty personnel in the fire control center to be aware of the danger and ensure that the problem is dealt with quickly.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall be included within the scope of the present utility model.

Claims

1. A flood prevention system for a pump room, comprising a fire water tank (1) and a fire pump room (12) disposed on one side of the fire water tank (1), wherein the fire water tank (1) is provided with an overflow horn (11), the top of the overflow horn (11) being flush with the overflow water level in the fire water tank (1), and the fire pump room (12) being provided with a fire pump and a drainage ditch (13), wherein the drainage ditch (13) is connected to the overflow horn (11) through a drainage pipe, characterized in that, The fire water tank (1) is equipped with a differential pressure transmitter (14), which transmits signals to the liquid level control cabinet (10), and the liquid level control cabinet (10) transmits signals to the alarm bell (15). The liquid level control cabinet (10) and the alarm bell (15) are both located in the fire control room (9). It also includes an inlet pipe (3), the outlet end of which passes through the top plate of the fire water tank (1) and extends into the fire water tank (1). The inlet end of the inlet pipe (3) is connected in sequence to the hydraulic water level control valve (7), the normally open solenoid valve (6), the switch valve group (5), and the municipal water supply pipe (4). The lowest position of the float (2) of the hydraulic water level control valve (7) is flush with the highest effective water level in the fire water tank (1). The highest effective water level in the fire water tank (1) is arranged below the overflow water level. The normally open solenoid valve (6) transmits signals to the level control cabinet (10).

2. The flood prevention system for a pump house according to claim 1, characterized in that, The outlet end of the inlet pipe (3) is arranged higher than the overflow water level in the fire water tank (1).

3. A flood prevention system for a pump house according to claim 1, characterized in that, The hydraulic water level control valve (7), normally open solenoid valve (6), and switch valve group (5) are all placed in the valve well (8).

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