Intelligent fire hydrant structure
By installing water level sensors and water pumps in fire hydrants and using solar power to automatically extract residual water, the problems of freezing and corrosion of fire hydrants have been solved, and the durability of the equipment has been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG KELONG FIRE INTELLIGENT DEV CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
AI Technical Summary
Existing fire hydrants often have residual water that freezes and damages the pipes after use, and long-term immersion can cause corrosion, affecting their service life.
Water level sensors and water pumps are installed in fire hydrants and powered by solar energy to automatically extract residual water, preventing freezing and corrosion.
It effectively prevents fire hydrant pipes from freezing and cracking and rusting, extends their service life, reduces scale formation, and improves equipment durability.
Smart Images

Figure CN224531806U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hydrant technology, specifically to an intelligent fire hydrant structure. Background Technology
[0002] Fire hydrants, also known as fire suppression systems, are fixed fire-fighting facilities primarily used to control combustibles, isolate oxidizers, and eliminate ignition sources. They are divided into indoor and outdoor fire hydrants. Outdoor fire hydrants are a specific type of fire-fighting facility, installed on the fire water supply network outside buildings. They primarily supply water to fire trucks from municipal or outdoor fire water supply networks for firefighting, and can also be directly connected to hoses and nozzles for fire suppression. They are one of the most important fire-fighting facilities. A patent online discloses an outdoor fire hydrant and its monitoring system. While this system can effectively monitor the fire hydrant, water remains inside after use. In cold winters, this water can easily freeze, damaging or cracking the hydrant pipes and valves. Furthermore, the water-filled interior of the hydrant can cause corrosion and damage to its components due to prolonged immersion, affecting its lifespan. Utility Model Content
[0003] In view of the prior art, the purpose of this utility model is to provide an intelligent fire hydrant that, by setting up an additional water pump, can start pumping water after the fire hydrant has been used, thereby eliminating residual water trapped inside the fire hydrant.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: an intelligent fire hydrant structure, including a hydrant body, a main valve and an outlet valve on the hydrant body, the inner cavity of the hydrant body being connected to an underground water supply pipeline, a pumping section and a pumping pump being provided at the upper end of the hydrant body, the inlet pipe of the pumping pump extending along the inner cavity to the water supply side of the main valve, a water level sensor and a trigger switch being provided on the main valve, and the water level sensor and the trigger switch being connected to a pumping pump controller.
[0005] As a further feature of the above scheme, the pumping section is connected to the inner cavity, and the pump is sealed and installed inside the pumping section, which is used to start pumping the stagnant water in the inner cavity after the main valve is closed, controlled by the controller.
[0006] As a further feature of the above scheme, the main valve includes a valve body, a valve stem, a valve disc, and a valve seat. The upper end of the valve stem is connected to a lead screw, and a rotating cylinder that rotates circumferentially and engages with the lead screw thread is provided on the valve body.
[0007] As a further feature of the above solution, the valve seat is threadedly sealed to the inner wall of the valve body, the trigger switch and the water level sensor are located on the valve seat, and a spring component is provided to drive its front end to elastically abut against and extend relative to the valve disc.
[0008] As a further provision of the above scheme, the throttle body includes an above-ground throttle component exposed on the ground and a vertical water pipe. The vertical water pipe extends from the ground into the underground, with one end of the pipe connected to the water inlet side of the main valve, and the water inlet side of the main valve connected to the underground water supply pipeline.
[0009] As a further feature of the above scheme, the controller of the water pump is also connected to a solar energy storage component and a wireless communication component. The wireless communication component can be used to provide feedback on the start-up status of the water pump and to send the water level monitoring signal from the water level sensor back to the terminal.
[0010] Beneficial effects: The fire hydrant of this utility model includes a ground-mounted hydrant and a connection to an underground water supply network via a vertical water pipe. The hydrant uses a screw structure on the ground-mounted hydrant to control the opening of a main valve located at the end of the vertical water pipe. Water is then supplied via a fire hose or water truck connected to the outlet valve. Furthermore, a solar-powered pumping structure is installed on the hydrant body. Activated by intelligent sensor monitoring, the structure pumps out and discharges stagnant water from the vertical water pipe and the interior of the ground-mounted hydrant after the main valve is closed. This reduces water accumulation in the hydrant's interior, preventing pipe freezing and cracking in winter, as well as corrosion caused by prolonged water immersion, which can shorten the hydrant's lifespan. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the intelligent fire hydrant structure of this utility model.
[0012] Figure 2 This is a schematic diagram of the above-ground hydrant structure of the intelligent fire hydrant of this utility model.
[0013] Figure 3 This is a schematic diagram of the main valve structure of the intelligent fire hydrant of this utility model.
[0014] Reference numerals: 1. Bolt body; 11. Inner cavity; 15. Above-ground bolt; 16. Vertical water pipe; 2. Main valve; 21. Valve body; 22. Valve stem; 221. Screw; 222. Rotary drum; 23. Valve disc; 24. Valve seat; 25. Inlet side; 26. Water supply side; 27. Spring component; 28. Water level sensor; 29. Trigger switch; 3. Outlet valve; 4. Pumping unit; 41. Water pump; 42. Inlet pipe; 9. Underground water supply pipeline. Detailed Implementation
[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.
[0016] like Figure 1-3The diagram illustrates an intelligent fire hydrant structure, comprising a hydrant body 1, a main valve 2 and an outlet valve 3, an inner cavity 11 of the hydrant body 1 connected to an underground water supply pipe 9, and a water pump 41 mounted on the upper end of the hydrant body 1. The inlet pipe 42 of the water pump 41 extends along the inner cavity 11 of the hydrant body 1 to the water inlet side 26 of the main valve 2. The main valve 2 is also equipped with a water level sensor 28 and a trigger switch 29, which are connected to a controller for the water pump 41. Figure 1 and Figure 2 The hydrant body 1 shown is equipped with a water outlet valve 3. The water outlet valve 3 is connected to the hydrant body 1 through a flange and has a valve structure that can cut off the water flowing out of the hydrant body 1. The other end of the water outlet valve 3 can be connected to a fire pipeline or fire truck for water supply.
[0017] As a further provision of the above scheme, the pumping section 4 is connected to the inner cavity 11, and the pumping pump 41 is sealed and installed in the pumping section 4, which is used to start pumping the stagnant water in the inner cavity 11 after the main valve 2 is closed, controlled by the controller.
[0018] As a further provision of the above scheme, the main valve 2 includes a valve body 21, a valve stem 22, a valve disc 23, and a valve seat 24. The upper end of the valve stem 22 is connected to a lead screw 221. A rotating cylinder 222 that rotates circumferentially and is threadedly engaged with the lead screw 221 is provided on the bolt body 1. The valve seat 24 is threadedly sealed to the inner wall of the valve body 21. The trigger switch 29 and the water level sensor 28 are located on the valve seat 24 and are provided with a spring component 27 to drive their front ends to elastically abut against and extend relative to the valve disc 23.
[0019] As a further provision of the above scheme, the throttle body 1 includes an above-ground throttle 15 exposed above the ground and a vertical water pipe 16. The vertical water pipe 16 extends from the ground into the underground, with one end located underground connected to the water inlet side 26 of the main valve 2. The water inlet side 25 of the main valve 2 is connected to the underground water supply pipeline 9.
[0020] As a further configuration of the above scheme, the controller of the water pump 41 is also connected to a solar energy storage component and a wireless communication component. The wireless communication component can be used to provide feedback on the start-up status of the water pump 41 and to provide feedback on the water level monitoring signal of the water level sensor 28 to the terminal. As described above, the fire hydrant in this embodiment is equipped with a water pump 41. In order to facilitate power connection, a solar energy storage component power supply unit structure is also provided, and a wireless communication component is provided to facilitate intelligent management of the terminal. In addition, the trigger switch 29 and the water level sensor 28 in this embodiment are both set as water-proof structures. The two electrodes of the trigger switch 29 are covered in a silicone waterproof sleeve and are abutted by the push of the valve disc 23. A spring component 27 is provided so that the trigger switch 29 is disconnected after the valve disc 23 moves down. In this state, the water level sensor 28 is no longer powered on until the trigger switch 29 is triggered again.
[0021] As described above, the intelligent fire hydrant of this utility model features a ground-level hydrant 15 exposed above ground, and a vertical water pipe 16 connecting the ground-level hydrant 15 to an underground water supply pipeline 9 located below ground. Based on the design of the vertical water pipe 16, the underground water supply pipeline 9 can be deeply buried underground or in a manhole. The valve stem 22 is raised and lowered by an operating mechanism located on the ground-level hydrant 15, thereby achieving relative movement between the valve disc 23 and the valve seat 24, allowing the main valve 2 located underground to open and close. It is worth noting that in this embodiment, the valve stem 22 is used to control the valve... The operating mechanism includes a rotating drum 222 that rotates relative to the valve body 1. The inner hole of the rotating drum 222 is provided with a threaded structure and a lead screw 221 that is axially fixed to the valve stem 22 body. Furthermore, the lower end of the threaded part of the lead screw 221 is provided with a square structure and a square hole sleeve for limiting its rotation is fitted on it. The square hole sleeve needs to be fixedly connected to the valve body 1. Thus, after the operator rotates the rotating drum 222 with a tool, the lead screw 221 is driven to extend and retract through the threaded engagement, thereby realizing the raising and lowering of the valve disc 23, which is used to open or cut off the flow channel on the valve seat 24.
[0022] As mentioned above, after the valve disc 23 rises, its upper sealing surface abuts against the valve seat 24, thereby closing the main valve 2. However, at this time, water remains between the upper end of the main valve 2 and the outlet valve 3 of the hydrant body 1. This water no longer flows, and in winter when the outdoor temperature is too low, it may freeze. As the water melts and the ice melts, it expands, which may cause cracking or damage to the connection. In addition, even if there is no freezing problem in winter, this stagnant water will firstly produce scale in the inner cavity 11, and secondly, being soaked in the hydrant body 1, long-term soaking can easily cause corrosion in the fire hydrant, including but not limited to the connection and valve components, affecting its service life.
[0023] Therefore, in this embodiment, the fire hydrant is further equipped with a trigger switch 29 on the valve seat 24. Before the valve disc 23 rises and comes close to the valve seat 24, it will touch the front end of the trigger switch 29 first. The rising valve disc 23 can then push the trigger switch 29 to move backward and trigger it. After triggering, the circuit is turned on, and the water level sensor 28 set on one side is energized to detect the water level. When there is water in the inner cavity 11, the water pump 41 set on the hydrant body 1 starts to pump water out of the inner cavity 11 until the water level sensor 28 detects that the water has been drained. The controller of the water pump 41 then shuts off the water pump 41. That is, each time the circuit of the trigger switch 29 is turned on after being disconnected, the water level sensor 28 will be triggered to start working until the water level sensor 28 sends a signal that there is no water. The controller then enters standby mode until the circuit of the trigger switch 29 is turned on again after being disconnected.
[0024] As described above, the water pump 41 in this embodiment can extract and discharge the water that remains in the inner cavity 11. Since the purpose of pumping is to empty the water that remains, and the number of times this happens is very small, the water that is pumped out can be connected to the green belt, drainage ditch or water storage unit near the fire hydrant by a pipe that has been set up in advance.
[0025] To further reduce the cost of the water pump, the pumping unit 4 can be designed to simply install an inlet pipe 42 and a controller that electrically connects to the trigger switch 29 and the water level sensor 28. The controller can be further equipped with a communication component that connects to the terminal. The detection signal from the water level sensor 28 prompts the terminal to bring an external pumping unit to actively pump out the water from the fire hydrant with stagnant water.
[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A smart fire hydrant structure, comprising a hydrant body (1), characterized in that: The sluice body (1) is equipped with a main valve (2) and an outlet valve (3). The inner cavity (11) of the sluice body (1) is connected to the underground water supply pipeline (9). The upper end of the sluice body (1) is also equipped with a pumping section (4) and a pumping pump (41). The inlet pipe (42) of the pumping pump (41) extends along the inner cavity (11) to the water supply side (26) of the main valve (2). The main valve (2) is also equipped with a water level sensor (28) and a trigger switch (29). The water level sensor (28) and the trigger switch (29) are connected to the pumping pump (41) controller.
2. The intelligent fire hydrant structure according to claim 1, characterized in that: The pumping section (4) is connected to the inner cavity (11), and the pump (41) is sealed and installed in the pumping section (4) to start pumping the stagnant water in the inner cavity (11) after the main valve (2) is closed by the controller.
3. The intelligent fire hydrant structure according to claim 1, characterized in that: The main valve (2) includes a valve body (21), a valve stem (22), a valve disc (23), and a valve seat (24). The upper end of the valve stem (22) is connected to a lead screw (221), and a rotating drum (222) that rotates circumferentially and is threadedly engaged with the lead screw (221) is provided on the bolt body (1).
4. The intelligent fire hydrant structure according to claim 3, characterized in that: The valve seat (24) is threadedly sealed to the inner wall of the valve body (21). The trigger switch (29) and the water level sensor (28) are located on the valve seat (24) and are provided with a spring component (27) to drive its front end to elastically abut against the valve disc (23) and extend outward.
5. The intelligent fire hydrant structure according to claim 1, characterized in that: The throttle body (1) includes an above-ground throttle (15) exposed on the ground and a vertical water pipe (16). The vertical water pipe (16) extends from the ground into the underground, with one end of it connected to the water inlet side (26) of the main valve (2). The water inlet side (25) of the main valve (2) is connected to the underground water supply pipeline (9).
6. The intelligent fire hydrant structure according to claim 1, characterized in that: The controller of the water pump (41) is also connected to a solar energy storage component and a wireless communication component. The wireless communication component can be used to provide feedback on the start-up status of the water pump (41) and to provide feedback on the water level monitoring signal of the water level sensor (28) to the terminal.