Fire hydrant with warning function
By incorporating modular design and sensors, the fire hydrant system addresses the issues of insufficient warning functionality and freezing/leaking problems, enabling efficient warning and maintenance and enhancing the safety and reliability of the fire hydrant.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU TAIHUA FIRE ELECTRICAL EQUIP CO LTD
- Filing Date
- 2025-07-08
- Publication Date
- 2026-05-12
AI Technical Summary
Existing fire hydrant equipment has limited warning functions, insufficient visibility at night or in inclement weather, and is easily damaged by vehicles. It is also complex to maintain and prone to freezing and leakage, leading to safety accidents and waste of resources.
The fire hydrant adopts a modular design, combining reflective strips, collision sensors, and leakage sensors to achieve passive and active warnings. It is linked to an audible and visual alarm through a central control module, and is equipped with a drain pipe and limit ring to prevent freezing. Threaded rods and rubber plugs are used to enable quick disassembly, assembly, opening, and closing.
It improves the visibility and safety of fire hydrants, reduces the risk of accidental collisions, simplifies the maintenance process, prevents freezing and leakage, and enhances reliability and response efficiency.
Smart Images
Figure CN224227895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hydrant technology, specifically a fire hydrant with a warning function. Background Technology
[0002] Fire hydrants, formally known as fire hose reels, are fixed fire-fighting facilities whose main function is to control combustibles, isolate oxidizers, and eliminate ignition sources. They are divided into indoor and outdoor fire hydrants. Fire hydrants primarily allow fire trucks to draw water from municipal water supply networks or outdoor fire water supply networks for firefighting. They can also be directly connected to hoses and nozzles for firefighting. Therefore, indoor and outdoor fire hydrant systems are crucial fire-fighting facilities.
[0003] Fire hydrants, as important fixed fire-fighting facilities, play a crucial role in urban water supply networks or outdoor fire water supply networks, providing support for fire trucks to draw water and directly extinguish fires. However, existing fire hydrant equipment generally suffers from the following problems: First, the warning function is limited, usually relying solely on its own color or reflective markings. In nighttime, inclement weather, or complex traffic environments, its visibility and passive warning effect are insufficient, making it easy for vehicles to accidentally collide with it, leading to equipment damage or even safety accidents. Second, maintenance is difficult. Traditional fire hydrants have complex structures and highly integrated components. Once a component is damaged, it often requires complete disassembly and specialized tools for repair, which is time-consuming, labor-intensive, and increases maintenance costs. Third, freezing and leakage are prominent problems, especially in cold regions. Residual water inside the pipes can easily freeze and expand, leading to pipe rupture and leakage at joints. This not only wastes water resources but may also affect the normal use of the fire hydrant and even cause secondary disasters such as foundation collapse. Therefore, this utility model aims to solve the above problems by providing a fire hydrant with multiple warning functions, convenient maintenance, and effective anti-freezing and leak-proof properties. Utility Model Content
[0004] The purpose of this invention is to provide a fire hydrant with a warning function to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire hydrant with a warning function, including a base,
[0006] The base has a water inlet bend welded to its bottom end, and a first support pipe is fixedly connected to the top end of the base. Several diagonal bracing plates are welded to the lower outer wall of the first support pipe. A first annular connecting plate is welded to the top end of the first support pipe. A first annular limiting groove is opened at the top end of the first annular connecting plate. A first annular rubber ring is fixedly connected to the middle of the first annular limiting groove.
[0007] Furthermore, a second annular connecting plate is fixedly connected to the top of the first annular connecting plate by bolts, a second support tube is welded to the top of the second annular connecting plate, and a number of reflective strips are fixedly provided on the outer wall of the second support tube.
[0008] Furthermore, a third annular connecting plate is welded to the top of the second support tube, and a second annular limiting groove is provided at the top of the third annular connecting plate. A second annular rubber ring is fixedly connected to the middle of the second annular limiting groove.
[0009] Furthermore, a fourth annular connecting plate is fixedly connected to the top of the third annular connecting plate by bolts, a third support pipe is welded to the top of the fourth annular connecting plate, a central control module is fixedly connected to the top of the third support pipe, the central control module is electrically connected to a collision sensor and a water leakage sensor, and an audible and visual alarm is fixedly connected to the top of the third support pipe.
[0010] Furthermore, the outer side of the third support tube is connected to several water outlet pipes, the lower side of the water outlet pipe is welded with a first hook, the outer end of the water outlet pipe is threaded with a sealing cap, the outer end of the sealing cap is welded with a second hook, and the two ends of the chain are fixedly connected to the second hook and the first hook respectively.
[0011] Furthermore, a collision sensor is fixedly connected to the top end of the third support tube, and a water leakage sensor is fixedly connected to the front end of the third support tube. A probe is fixedly connected to one end of the water leakage sensor. The probe is a waterproof encapsulated humidity or pressure sensing probe, the front end of which extends into a pre-set monitoring hole in the inner wall of the first support tube and forms a reliable seal with the inner wall of the first support tube to monitor leakage or abnormal humidity changes inside the pipe in real time. The location of the monitoring hole should ensure that leakage can be detected in a timely manner.
[0012] Furthermore, a limiting ring is welded to the inner wall of the first support pipe, and the limiting ring is fixedly connected to the outer wall of the inlet bend.
[0013] Furthermore, a cross-shaped support column is welded to the middle of the second support tube, the center of the cross-shaped support column is provided with a threaded hole, and a threaded rod is threadedly connected to the middle of the cross-shaped support column.
[0014] Furthermore, a handwheel is fixedly connected to the top end of the threaded rod, and a circular limiting plate is welded to the bottom end of the threaded rod. The diameter of the circular limiting plate is larger than the outer diameter of the water inlet bend, and a rubber plug is fixedly connected to the bottom end of the circular limiting plate.
[0015] Furthermore, a drain pipe is connected to the right side of the first support pipe, and a water valve is fixedly connected to the middle of the drain pipe.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] By setting up a first annular connecting plate, a second annular connecting plate, a third annular connecting plate, and a fourth annular connecting plate, the top of the first support pipe is welded to the first annular connecting plate, the top of the first annular connecting plate is fixedly connected to the second annular connecting plate by bolts, the top of the second annular connecting plate is welded to the second support pipe, the top of the second support pipe is welded to the third annular connecting plate, the top of the third annular connecting plate is fixedly connected to the fourth annular connecting plate by bolts, and the top of the fourth annular connecting plate is welded to the third support pipe. This layered bolt connection method realizes the modular assembly of the first, second, and third support pipes. Combined with the first annular limiting groove, the first annular rubber ring, the second annular limiting groove, and the second annular rubber ring, these annular grooves and rubber rings form multiple sealing barriers when the bolts are tightened, effectively preventing leakage at the interface. This design enables the fire hydrant to be quickly disassembled and maintained, while also reducing transportation costs.
[0018] By incorporating reflective strips and collision sensors, the outer wall of the second support pipe is fixedly equipped with several reflective strips that reflect vehicle lights, providing passive visual warnings. Simultaneously, a collision sensor is fixedly connected to the top of the third support pipe, capable of real-time monitoring of external impact signals. Upon detection of an impact, it immediately triggers an active alarm system, linking a flashing warning light to send an alarm to the monitoring center, achieving dual warnings day and night, effectively reducing the risk of accidental collisions with the fire hydrant. A water outlet pipe, chain, and sealing cap are incorporated; the water outlet pipe connects the sealing cap to the first hook via the chain, preventing the sealing cap from falling off during operation. The threaded sealing cap allows for quick opening and closing, and the chain length design ensures operational flexibility, significantly improving the reliability of the fire hydrant. A leakage sensor, the first support pipe, and a probe are also incorporated; the front end of the third support pipe is fixedly connected to a leakage sensor, and one end is fixedly connected to a probe. This probe extends into a pre-set monitoring hole in the inner wall of the first support pipe and is sealed, allowing real-time monitoring of internal pipe leakage. Upon detecting abnormal humidity or water pressure changes, the leakage sensor immediately issues an alarm signal, preventing water waste or foundation collapse due to hidden leaks. In addition, a limiting ring is welded to the inner wall of the first support pipe, and the limiting ring is rigidly connected to the outer wall of the inlet bend to ensure structural stability. A drain pipe is connected to the right side of the first support pipe, and a water valve is fixedly connected to the middle of the drain pipe to form an active drainage channel. In cold environments, residual water in the main pipe can be drained by opening the water valve, and the rubber plug controlled by the threaded rod can descend to seal the inlet of the inlet bend, further reducing the probability of freezing and avoiding the risk of freezing and cracking. By setting up a limiting ring, an inlet bend, a drain pipe, and a water valve, the rigid connection between the limiting ring and the inlet bend ensures structural stability; the drain pipe and the water valve form an active drainage channel, which can drain residual water in cold environments and avoid the risk of freezing and cracking; the rubber plug and the circular limiting plate constitute a second sealing line of defense, further reducing the probability of freezing; by setting up a cross-shaped support column, a handwheel, a threaded rod, and a rubber plug, a cross-shaped support column is welded to the middle of the second support pipe, which has a threaded hole in the center and is threadedly connected to the threaded rod. A handwheel is fixedly connected to the top of the threaded rod, and a circular limiting plate is welded to its bottom. A rubber stopper is fixedly connected to the bottom of the circular limiting plate. This rotary opening and closing mechanism, consisting of the handwheel, threaded rod, and rubber stopper, controls the threaded rod to move the rubber stopper up and down in the main water flow channel by rotating the handwheel, enabling single-handed adjustment of the water flow. Compared to traditional wrench operation, this significantly improves the opening and closing efficiency of fire hydrants, making it particularly suitable for emergency rescue scenarios. By setting up a central control module, when the sensor detects an abnormal signal, it transmits the signal to the central control module. Based on preset alarm logic, the central control module immediately activates the audible and visual alarm to issue a warning, and sends the alarm information (including alarm type, time, location, etc.) in real time to the fire monitoring center or the mobile terminal of relevant management personnel via a wireless communication module, achieving rapid response and remote early warning. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a top view of the internal structure of this utility model;
[0022] Figure 3 This is a front cross-sectional view of the present invention.
[0023] In the diagram: 1. Base; 2. Inlet bend; 3. First support pipe; 4. Diagonal brace; 5. First annular connecting plate; 6. First annular limiting groove; 7. First annular rubber ring; 8. Second annular connecting plate; 9. Second support pipe; 10. Third annular connecting plate; 11. Second annular limiting groove; 12. Second annular rubber ring; 13. Fourth annular connecting plate; 14. Outlet pipe; 15. Sealing cap; 16. Second hook; 17. Chain; 18. First hook; 19. Collision sensor; 20. Leakage sensor; 21. Probe; 22. Reflective strip; 23. Limiting ring; 24. Cross-shaped support column; 25. Threaded rod; 26. Handwheel; 27. Circular limiting plate; 28. Rubber plug; 29. Drain pipe; 30. Water valve; 31. Third support pipe; 32. Central control module; 33. Audible and visual alarm. Detailed Implementation
[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Please see Figure 1-3This utility model provides a technical solution for a fire hydrant with a warning function: A fire hydrant with a warning function includes a base 1, an inlet bend 2 welded to the bottom end of the base 1, a first support pipe 3 fixedly connected to the top end of the base 1, several diagonal bracing plates 4 welded to the lower outer wall of the first support pipe 3, and a first annular connecting plate 5 welded to the top end of the first support pipe 3. By setting the first annular connecting plate 5, the second annular connecting plate 8, the third annular connecting plate 10, and the fourth annular connecting plate 13, the first annular connecting plate 5 is welded to the top end of the first support pipe 3, the second annular connecting plate 8 is fixedly connected to the top end of the first annular connecting plate 5 by bolts, the second support pipe 9 is welded to the top end of the second annular connecting plate 8, the third annular connecting plate 10 is welded to the top end of the second support pipe 9, the fourth annular connecting plate 13 is fixedly connected to the top end of the third annular connecting plate 10 by bolts, and the third support pipe 31 is welded to the top end of the fourth annular connecting plate 13. This layered bolt connection method realizes the modular assembly of the first support pipe 3, the second support pipe 9, and the third support pipe 31. In conjunction with the first annular limiting groove 6, the first annular rubber ring 7, the second annular limiting groove 11, and the second annular rubber ring 12, these annular grooves and rubber rings form multiple sealing barriers when the bolts are tightened, effectively preventing leakage at the interface. This design enables the fire hydrant to be quickly disassembled and maintained, while also reducing transportation costs. The top of the first annular connecting plate 5 has a first annular limiting groove 6, and the middle of the first annular limiting groove 6 is fixedly connected to the first annular rubber ring 7. The top of the first annular connecting plate 5 is fixedly connected to the second annular connecting plate 8 by bolts, and the top of the second annular connecting plate 8 is welded to the second support pipe 9. Several reflective strips 22 are fixedly provided on the outer wall of the second support pipe 9. By setting the reflective strips 22 and the collision sensor 19, the reflective strips 22 fixedly provided on the outer wall of the second support pipe 9 can reflect vehicle lights and provide passive visual warning. Meanwhile, a collision sensor 19 is fixedly connected to the top of the third support pipe 31, which can monitor external impact signals in real time. Once an impact is detected, it can immediately trigger the active alarm system, link the warning light to flash and send an alarm to the monitoring center, realizing dual warning in day and night environments, effectively reducing the risk of fire hydrants being accidentally hit. A third annular connecting plate 10 is welded to the top of the second support pipe 9. A second annular limiting groove 11 is opened at the top of the third annular connecting plate 10. A second annular rubber ring 12 is fixedly connected in the middle of the second annular limiting groove 11. A fourth annular connecting plate 13 is fixedly connected to the top of the third annular connecting plate 10 by bolts. A third support pipe 31 is welded to the top of the fourth annular connecting plate 13. A central control module 32 is fixedly connected to the top of the third support pipe 31. By setting the central control module 32, when the sensor detects an abnormal signal, it will transmit the signal to the central control module 32.According to the preset alarm logic, the central control module 32 immediately activates the audible and visual alarm 33 to issue a warning, and sends the alarm information (including alarm type, time, location, etc.) to the fire monitoring center or the mobile terminal of relevant management personnel in real time through the wireless communication module, so as to realize rapid response and remote early warning. The central control module 32 is electrically connected to the collision sensor 19 and the water leakage sensor 20, and the audible and visual alarm 33 is fixedly connected to the top of the third support tube 31.
[0028] The outer side of the third support pipe 31 is connected to several water outlet pipes 14. By setting up water outlet pipes 14, chains 17, and sealing caps 15, the water outlet pipes 14 are connected to the sealing caps 15 and the first hooks 18 via chains 17, preventing the sealing caps 15 from falling off and being lost during operation. The threaded sealing caps 15 can be opened and closed quickly, and the length design of the chain 17 ensures operational flexibility, significantly improving the reliability of fire hydrant use. The lower side of the water outlet pipe 14 is welded with the first hook 18, and the outer end of the water outlet pipe 14 is threadedly connected to the sealing cap 15. The outer end of the sealing cap 15 is welded with the second hook 16. The two ends of the chain 17 are fixedly connected to the second hook 16 and the first hook 18, respectively. The top end of the third support pipe 31 is fixedly connected to a collision sensor 19, and the front end of the third support pipe 31 is fixedly connected to a leakage sensor 20. By setting up a leakage sensor 20, a first support pipe 3, and a probe 21, the front end of the third support pipe 31 is fixedly connected to the leakage sensor 20, and one end of the probe 21 is fixedly connected to it. The probe 21 extends into a pre-set monitoring hole on the inner wall of the first support pipe 3 and achieves a seal, enabling real-time monitoring of internal pipe leakage. Once abnormal humidity or water pressure changes are detected, the leakage sensor 20 immediately issues an alarm signal to prevent water waste or foundation collapse due to hidden leaks. Furthermore, a limiting ring 23 is welded to the inner wall of the first support pipe 3, and the limiting ring 23 is rigidly connected to the outer wall of the inlet bend 2 to ensure structural stability. A drain pipe 29 is connected to the right side of the first support pipe 3, and a water valve 30 is fixedly connected to the middle of the drain pipe 29, forming an active drainage channel. In cold environments, residual water in the main pipe can be drained by opening water valve 30. This, combined with the lowering of rubber plug 28 controlled by threaded rod 25 to seal the inlet of water inlet bend 2, further reduces the probability of freezing and avoids the risk of cracking. One end of the leakage sensor 20 is fixedly connected to a probe 21, which is a waterproof humidity or pressure sensor. Its front end extends into a pre-set monitoring hole on the inner wall of the first support pipe 3, forming a reliable seal with the inner wall of the first support pipe 3. This allows for real-time monitoring of leaks or abnormal humidity changes inside the pipe. The location of this monitoring hole should ensure timely detection of leaks. A limiting ring 23 is welded in place. The rigid connection between the limiting ring 23 and the inlet bend 2 ensures structural stability. The drain pipe 29 and the water valve 30 form an active drainage channel, which can drain residual water in cold environments and avoid the risk of freezing and cracking. The rubber plug 28 and the circular limiting plate 27 form a second sealing line to further reduce the probability of freezing. A cross-shaped support column 24, a handwheel 26, a threaded rod 25 and a rubber plug 28 are set in place. The second support pipe 9 has a cross-shaped support column 24 welded in the middle, with a threaded hole in the center, and is threadedly connected to the threaded rod 25.A handwheel 26 is fixedly connected to the top of the threaded rod 25, and a circular limiting plate 27 is welded to its bottom. A rubber stopper 28 is fixedly connected to the bottom of the circular limiting plate 27. The rotary opening and closing mechanism composed of the handwheel 26, the threaded rod 25, and the rubber stopper 28 controls the threaded rod 25 to drive the rubber stopper 28 to rise and fall in the main water flow channel by rotating the handwheel 26, thereby realizing the single-hand operation adjustment of the water flow. Compared with traditional wrench operation, this significantly improves the opening and closing efficiency of fire hydrants, making it especially suitable for emergency rescue scenarios. The limiting ring 23 is fixedly connected to the outer wall of the inlet bend 2. A cross-shaped support column 24 is welded in the middle of the second support pipe 9. The center of the cross-shaped support column 24 has a threaded hole. A threaded rod 25 is threadedly connected in the middle of the cross-shaped support column 24. A handwheel 26 is fixedly connected to the top of the threaded rod 25. A circular limiting plate 27 is welded to the bottom of the threaded rod 25. The diameter of the circular limiting plate 27 is larger than the outer diameter of the inlet bend 2. A rubber plug 28 is fixedly connected to the bottom of the circular limiting plate 27. A drain pipe 29 is connected to the right side of the first support pipe 3. A water valve 30 is fixedly connected in the middle of the drain pipe 29.
[0029] When this utility model is used, it is divided into the following four stages:
[0030] 1. Preparation Stage: Rotating handwheel 26 raises rubber plug 28, allowing water to enter base 1 from inlet bend 2, and then sequentially pass through first support pipe 3, second support pipe 9, and third support pipe 31. The internal flow channels of these support pipes are designed with smooth, unobstructed circular or near-circular cross-sections to ensure smooth water flow and reduce head loss. The modular connections between the support pipes are sealed by multiple layers of barriers formed by annular connecting plates and rubber rings, preventing leakage while maintaining the continuity of the internal flow channels and ensuring unimpeded water flow.
[0031] 2. Accessing the interface: Unscrew the sealing cap 15 of the water outlet pipe 14, use the chain 17 to prevent the cap from falling off, and connect the fire hose;
[0032] 3. Status monitoring: Leakage sensor 20 monitors the pipe sealing in real time, and collision sensor 19 triggers the surrounding warning lights to flash;
[0033] 4. Operation completed: Rubber stopper 28 descends to close the inlet, water valve 30 is opened to drain the residual water, and sealing cap 15 is reset.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fire hydrant with a warning function, comprising a base (1), characterized in that: The base (1) is welded with a water inlet bend (2) at the bottom end, and a first support pipe (3) is fixedly connected to the top end of the base (1). Several inclined bracing plates (4) are welded to the lower outer wall of the first support pipe (3). A first annular connecting plate (5) is welded to the top end of the first support pipe (3). A first annular limiting groove (6) is opened at the top end of the first annular limiting groove (6). A first annular rubber ring (7) is fixedly connected in the middle of the first annular limiting groove (6).
2. A fire hydrant with a warning function according to claim 1, characterized in that: The top end of the first annular connecting plate (5) is fixedly connected to the second annular connecting plate (8) by bolts. The top end of the second annular connecting plate (8) is welded to the second support pipe (9). The outer wall of the second support pipe (9) is fixedly provided with several reflective strips (22).
3. A fire hydrant with a warning function according to claim 2, characterized in that: The top end of the second support tube (9) is welded with a third annular connecting plate (10), and the top end of the third annular connecting plate (10) is provided with a second annular limiting groove (11), and a second annular rubber ring (12) is fixedly connected in the middle of the second annular limiting groove (11).
4. A fire hydrant with a warning function according to claim 3, characterized in that: The top end of the third annular connecting plate (10) is fixedly connected to the fourth annular connecting plate (13) by bolts. The top end of the fourth annular connecting plate (13) is welded to the third support pipe (31). The top end of the third support pipe (31) is fixedly connected to the central control module (32). The central control module (32) is electrically connected to the collision sensor (19) and the water leakage sensor (20). The top end of the third support pipe (31) is fixedly connected to the audible and visual alarm (33).
5. A fire hydrant with a warning function according to claim 4, characterized in that: The outer side of the third support pipe (31) is connected to several water outlet pipes (14). The lower side of the water outlet pipe (14) is welded with a first hook (18). The outer end of the water outlet pipe (14) is threaded with a sealing cap (15). The outer end of the sealing cap (15) is welded with a second hook (16). The two ends of the chain (17) are fixedly connected to the second hook (16) and the first hook (18) respectively.
6. A fire hydrant with a warning function according to claim 4, characterized in that: A collision sensor (19) is fixedly connected to the top end of the third support tube (31), and a water leakage sensor (20) is fixedly connected to the front end of the third support tube (31). A probe (21) is fixedly connected to one end of the water leakage sensor (20). The probe (21) is a waterproof encapsulated humidity or pressure sensing probe. Its front end extends into a pre-set monitoring hole in the inner wall of the first support tube (3) and forms a reliable seal with the inner wall of the first support tube (3).
7. A fire hydrant with a warning function according to claim 1, characterized in that: A limiting ring (23) is welded to the inner wall of the first support pipe (3), and the limiting ring (23) is fixedly connected to the outer wall of the water inlet bend (2).
8. A fire hydrant with a warning function according to claim 2, characterized in that: The second support tube (9) has a cross-shaped support column (24) welded in the middle. The center of the cross-shaped support column (24) is provided with a threaded hole, and the center of the cross-shaped support column (24) is threaded with a threaded rod (25).
9. A fire hydrant with a warning function according to claim 8, characterized in that: A handwheel (26) is fixedly connected to the top of the threaded rod (25), and a circular limiting plate (27) is welded to the bottom of the threaded rod (25). The diameter of the circular limiting plate (27) is larger than the outer diameter of the water inlet bend (2), and a rubber plug (28) is fixedly connected to the bottom of the circular limiting plate (27).
10. A fire hydrant with a warning function according to claim 1, characterized in that: The right side of the first support pipe (3) is connected to a drain pipe (29), and a water valve (30) is fixedly connected in the middle of the drain pipe (29).