Pressure regulating and stabilizing type indoor fire hydrant
By introducing a pressure regulation system with a PLC controller and an electrically controlled valve into indoor fire hydrants, combined with a filtration mechanism, the problem of existing fire hydrants being unable to monitor pressure and water quality in real time has been solved. This has enabled automatic regulation of water pressure and filtration of the water source, improving the efficiency and reliability of fire-fighting operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHUANAN FIRE IND CO LTD
- Filing Date
- 2025-05-07
- Publication Date
- 2026-05-29
AI Technical Summary
Existing indoor fire hydrants lack real-time pressure monitoring capabilities, making it impossible for firefighters to accurately determine whether the outlet pressure meets firefighting requirements. This results in low operational efficiency and difficulty in adapting to rapidly changing fire situations.
The system uses a PLC controller and an electric valve in conjunction with a pressure gauge and a filtration mechanism to achieve real-time monitoring and automatic adjustment of the water pressure at the outlet, and filters the water source through a filter screen to ensure water purity.
It enables real-time monitoring and automatic adjustment of water pressure, improving the efficiency and reliability of fire extinguishing operations, avoiding the adverse effects of excessive pressure fluctuations on fire extinguishing operations, and ensuring the purity of the water source.
Smart Images

Figure CN224292405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hydrant technology, and in particular to a pressure-regulating and stabilizing indoor fire hydrant. Background Technology
[0002] Indoor fire hydrants, as a key component of building fire protection systems, play an irreplaceable role in fire fighting. With the acceleration of urbanization and the booming development of the construction industry, various types of buildings, such as high-rise buildings, commercial complexes, and industrial plants, are increasing, placing higher demands on the performance and reliability of indoor fire hydrants. However, existing indoor fire hydrants have revealed many problems in practical applications, which seriously affect their effectiveness in fire rescue and urgently need to be addressed.
[0003] In practical use, most existing indoor fire hydrants lack real-time pressure monitoring capabilities. Before opening the hydrant, firefighters cannot accurately determine whether the outlet pressure meets firefighting requirements and must rely on experience. If abnormal pressure occurs, significant time is often spent troubleshooting and adjusting, delaying the optimal time for firefighting. Furthermore, traditional fire hydrant pressure regulation primarily relies on manual operation, which is not only inefficient but also lacks precision and cannot adapt to the rapidly changing conditions at a fire scene. Therefore, a pressure-regulating and stabilizing indoor fire hydrant is proposed. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this invention is to provide a pressure-regulating and stabilizing indoor fire hydrant, which solves the problem mentioned in the background art that most existing indoor fire hydrants lack real-time pressure monitoring capabilities during actual use. This means that firefighters cannot accurately determine whether the outlet pressure meets firefighting requirements before opening the hydrant and must rely on experience.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure-regulating and stabilizing indoor fire hydrant, comprising a fire hydrant body, a distribution box fixedly connected to the center of the surface of the fire hydrant body, a pressure regulating mechanism installed inside the distribution box, a water inlet pipe at the bottom of the fire hydrant body, a filter mechanism threadedly connected inside the water inlet pipe, the pressure regulating mechanism including a PLC controller installed inside the distribution box, a pressure gauge electrically connected to one side of the PLC controller via a power cord, and an electric control valve electrically connected to the other side of the PLC controller via a power cord; the filter mechanism including a filter pipe threadedly connected inside the water inlet pipe, and a filter screen installed inside the filter pipe.
[0008] As a further embodiment of this utility model, the filter tube has a threaded hole inside, and a flange connector is threaded into the threaded hole. The flange connector serves to connect to an external water supply mechanism.
[0009] As a further embodiment of this utility model, the upper surface of the fire hydrant body is provided with a water outlet, and one side of the water outlet is connected to one side of the electric control valve through a flange. The electric control valve is used to control the water pressure.
[0010] As a further embodiment of this utility model, the pressure gauge is installed on the surface of the water outlet, and the detection probe of the pressure gauge is located inside the water outlet. The pressure gauge is designed to detect water pressure.
[0011] As a further embodiment of this utility model, a sealing door is hinged to one side of the distribution box, and a handle is installed on the surface of the sealing door. The sealing door serves to achieve a sealing function.
[0012] As a further embodiment of this utility model, the flange surface is provided with a plurality of threaded holes, and the threaded holes are internally threaded with threaded posts, which serve to connect to the electric control valve.
[0013] As a further embodiment of this utility model, extension blocks are fixedly connected to both sides of the fire hydrant body. Two threaded holes are opened on the surface of the extension blocks, and positioning bolts are threaded into the internal threads of the threaded holes. The positioning bolts serve to reinforce the fire hydrant body.
[0014] (III) Beneficial Effects
[0015] This utility model provides a pressure-regulating and pressure-stabilizing indoor fire hydrant, which has the following beneficial effects:
[0016] 1. This pressure-regulating and stabilizing indoor fire hydrant features a pressure regulating mechanism. During use, a pressure gauge is installed near the outlet to monitor the water pressure inside the outlet in real time. When the pressure is insufficient or too high, a PLC controller is used to control the opening and closing of the terminal electric control valve to regulate the water pressure to a suitable range, effectively preventing excessive pressure fluctuations from adversely affecting firefighting operations.
[0017] 2. This pressure-regulating and stabilizing indoor fire hydrant features a filter mechanism. During use, the inlet pipe and flange connector are threaded with filter pipes, and filter screens are installed inside the filter pipes. The filter screens filter the water source at the inlet pipe to ensure its purity. The filter pipes are connected by threads, which facilitates disassembly and replacement later, preventing excessive impurities in the water source from damaging internal precision components or causing blockages. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the filter mechanism structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the pressure regulating mechanism of this utility model;
[0021] Figure 4 This is a schematic diagram of the outlet structure of this utility model.
[0022] In the diagram: 1. Fire hydrant body; 2. Distribution box; 3. Pressure regulating mechanism; 301. PLC controller; 302. Pressure gauge; 303. Electric control valve; 4. Water inlet pipe; 5. Filtration mechanism; 501. Filter pipe; 502. Filter screen; 6. Flange connector; 7. Water outlet; 8. Sealing door; 9. Threaded post; 10. Extension block; 11. Positioning bolt. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a pressure-regulating and stabilizing indoor fire hydrant, including a fire hydrant body 1, a distribution box 2 fixedly connected to the center of the surface of the fire hydrant body 1, a pressure regulating mechanism 3 installed inside the distribution box 2, the pressure regulating mechanism 3 effectively avoids the adverse effects of excessive pressure fluctuations on fire extinguishing operations, a water inlet pipe 4 is provided at the bottom of the fire hydrant body 1, and a filter mechanism 5 is threadedly connected inside the water inlet pipe 4, the filter mechanism 5 prevents excessive impurities in the water source from damaging internal precision components and from causing blockages.
[0025] The pressure regulating mechanism 3 includes a PLC controller 301 installed inside the distribution box 2. One side of the PLC controller 301 is electrically connected to a pressure gauge 302 via a power cord, and the other side of the PLC controller 301 is electrically connected to an electric control valve 303 via a power cord.
[0026] The filtration mechanism 5 includes a filter tube 501 threadedly connected to the inside of the water inlet pipe 4, and a filter screen 502 is installed inside the filter tube 501.
[0027] The filter tube 501 has a threaded hole inside, and a flange connector 6 is threaded inside the threaded hole. The flange connector 6 serves to connect to the external water supply mechanism.
[0028] The upper surface of the fire hydrant body 1 is provided with a water outlet 7. One side of the water outlet 7 is connected to one side of the electric control valve 303 through a flange. The electric control valve 303 is used to control the water pressure.
[0029] Pressure gauge 302 is installed on the surface of water outlet 7. The detection probe of pressure gauge 302 is located inside water outlet 7. Through the setting of pressure gauge 302, it plays the role of detecting water pressure.
[0030] A sealing door 8 is hinged to one side of the distribution box 2. A handle is installed on the surface of the sealing door 8. The sealing door 8 serves to seal the room.
[0031] The flange surface has several threaded holes, and the threaded holes are internally connected to threaded posts 9. The threaded posts 9 are used to connect the solenoid valve 303.
[0032] Both sides of the fire hydrant body 1 are fixedly connected with extension blocks 10. Two threaded holes are opened on the surface of the extension block 10. The internal threads of the threaded holes are connected with positioning bolts 11. The positioning bolts 11 serve to reinforce the fire hydrant body 1.
[0033] In this invention, the working steps of the device are as follows:
[0034] First step: When in use, a pressure gauge 302 is installed near the water outlet 7. The pressure gauge 302 monitors the water pressure inside the water outlet 7 in real time. When the pressure is insufficient or too high, the PLC controller 301 controls the opening and closing of the terminal electric control valve 303 to adjust the water pressure to a suitable pressure range.
[0035] The second step: When in use, the middle part of the water inlet pipe 4 and the flange connector 6 are respectively threaded with filter pipes 501, and filter screens 502 are installed inside the filter pipes 501. The filter screens 502 are used to filter the water source at the water inlet pipe 4 to ensure its purity. The filter pipes 501 are connected by threads, which makes it easy to disassemble and replace them later.
[0036] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.
[0037] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.
[0038] 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 pressure-regulating and stabilizing indoor fire hydrant, comprising a fire hydrant body (1), characterized in that: A distribution box (2) is fixedly connected to the center of the surface of the fire hydrant body (1). A pressure regulating mechanism (3) is installed inside the distribution box (2). A water inlet pipe (4) is provided at the bottom of the fire hydrant body (1). A filter mechanism (5) is threadedly connected inside the water inlet pipe (4). The pressure regulating mechanism (3) includes a PLC controller (301) installed inside the distribution box (2). One side of the PLC controller (301) is electrically connected to a pressure gauge (302) via a power line, and the other side of the PLC controller (301) is electrically connected to an electric control valve (303) via a power line. The filtration mechanism (5) includes a filter tube (501) threaded into the inside of the water inlet pipe (4), and a filter screen (502) is installed inside the filter tube (501).
2. The pressure-regulating and stabilizing indoor fire hydrant according to claim 1, characterized in that: The filter tube (501) has a threaded hole inside, and a flange connector (6) is threaded into the threaded hole.
3. The pressure-regulating and stabilizing indoor fire hydrant according to claim 1, characterized in that: The fire hydrant body (1) has an outlet (7) on its upper surface, and one side of the outlet (7) is connected to the side of the electric control valve (303) through a flange.
4. A pressure-regulating and stabilizing indoor fire hydrant according to claim 1, characterized in that: The pressure gauge (302) is installed on the surface of the outlet (7), and the detection probe of the pressure gauge (302) is located inside the outlet (7).
5. A pressure-regulating and stabilizing indoor fire hydrant according to claim 1, characterized in that: A sealing door (8) is hinged to one side of the distribution box (2), and a handle is installed on the surface of the sealing door (8).
6. A pressure-regulating and stabilizing indoor fire hydrant according to claim 3, characterized in that: The flange surface has several threaded holes, and the threaded holes are internally connected to threaded posts (9).
7. A pressure-regulating and stabilizing indoor fire hydrant according to claim 1, characterized in that: Both sides of the fire hydrant body (1) are fixedly connected to extension blocks (10), and two threaded holes are opened on the surface of the extension blocks (10), and positioning bolts (11) are threadedly connected inside the threaded holes.