Hydrogen energy vent pipe gas fire extinguishing device

Abstract

The utility model relates to a kind of hydrogen energy venting pipe gas fire extinguishing device, comprising: steam supply line, fire extinguishing execution mechanism, fire detection unit and controller.The inlet end of steam supply line is connected to steam source, and the outlet end is connected to hydrogen venting pipe.Fire extinguishing execution mechanism includes the main cut-off valve being set on steam supply line.Fire detection unit includes the temperature sensor being set on hydrogen venting pipe.The controller is electrically connected with temperature sensor and main cut-off valve, when the detection value of temperature sensor reaches preset threshold, control main cut-off valve opens.The hydrogen energy venting pipe gas fire extinguishing device, by setting temperature sensor can monitor venting pipe state in real time, overcome the defect that artificial discovery flame is difficult;Once the temperature anomaly caused by fire is detected, the controller can automatically start fire extinguishing program within seconds, timely extinguish flame, effectively solve the technical problem that hydrogen venting pipeline is difficult to discover and timely extinguish after fire in prior art.

Description

Technical Field

[0001] This utility model relates to the field of industrial safety equipment technology, and in particular to a hydrogen venting pipe gas fire extinguishing device. Background Technology

[0002] Hydrogen is highly flammable, and its flame is pale white when burning. Previous hydrogen venting pipeline fire suppression systems had the following problems: Difficulty in detecting hydrogen fires. In bright light, the flame is not easily visible to the naked eye, especially on high-level venting pipelines, requiring on-site inspection or the use of measuring instruments to detect the anomaly. Difficulty in extinguishing hydrogen fires. Hydrogen has strong diffusion properties, and the flame may detach from the pipeline during combustion. In thunderstorms or other abnormal situations, if a fire breaks out in the venting pipeline, failure to extinguish it promptly could pose a greater safety risk. Slow response time after ignition. Previously, only steam pipes were connected to the venting pipeline, equipped with manual valves. If a hydrogen pipeline fire was detected, the condensate in the steam pipe had to be drained first before opening the steam manual valve to extinguish the fire, which was insufficient to extinguish the initial fire in a timely manner. Utility Model Content

[0003] This invention addresses the technical problem of difficulty in detecting and extinguishing fires in hydrogen venting pipelines in the prior art by providing a hydrogen venting pipeline gas fire extinguishing device.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A hydrogen venting pipe gas fire extinguishing device includes: a steam supply pipeline, a fire extinguishing actuator, a fire detection unit, and a controller; The inlet end of the steam supply pipeline is connected to a steam source, and the outlet end is connected to a hydrogen venting pipeline. The fire extinguishing actuator includes a main shut-off valve installed on the steam supply pipeline; The fire detection unit includes a temperature sensor installed on the hydrogen vent pipe; The controller is electrically connected to the temperature sensor and the main shut-off valve. When the temperature sensor detects a value that reaches a preset threshold, it controls the main shut-off valve to open.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Furthermore, the steam supply pipeline is also equipped with an automatic steam trap assembly, which is located upstream of the main shut-off valve and is used to drain the condensate in the steam supply pipeline.

[0007] Furthermore, the automatic drain valve assembly includes an automatic drain valve and maintenance valves located before and after it.

[0008] Furthermore, the fire detection unit also includes: a flame detector; the flame detector is installed at the vent of the hydrogen vent pipe; the flame detector is electrically connected to the controller; when a fire occurs, the controller receives a signal from the flame detector, and when it receives a signal from the flame detector, it controls the main shut-off valve to open.

[0009] Furthermore, the explosion-proof rating of the temperature sensor is greater than or equal to IICT1, and the distance between the installation position of the temperature sensor and the vent of the hydrogen vent pipe is less than or equal to 50mm.

[0010] Furthermore, it also includes: a steam nozzle; the steam nozzle is disposed at the outlet end of the steam supply pipeline, the interior of the steam nozzle is provided with a flow guiding structure that causes the steam to swirl, and the outlet of the steam nozzle is provided with multiple nozzle holes.

[0011] Furthermore, it also includes: a pressure sensor; the pressure sensor is disposed on the steam supply pipeline, and the pressure sensor is electrically connected to the controller for monitoring steam pressure.

[0012] Furthermore, a drain valve is provided on the hydrogen vent pipe to drain the condensate inside the hydrogen vent pipe.

[0013] Furthermore, the steam supply pipeline has a steam working pressure greater than or equal to 0.6 MPa and a pipeline diameter greater than or equal to DN50.

[0014] Compared with the prior art, the hydrogen venting pipe gas fire extinguishing device provided by this utility model has the following beneficial effects: This utility model provides a hydrogen venting pipe gas fire extinguishing device. The inlet end of the steam supply pipeline is connected to a steam source, and the outlet end is connected to a hydrogen venting pipe. The fire extinguishing actuator includes a main shut-off valve installed on the steam supply pipeline. The fire detection unit includes a temperature sensor installed on the hydrogen venting pipe. The controller is electrically connected to the temperature sensor and the main shut-off valve. When the temperature sensor detects a preset threshold value, it controls the main shut-off valve to open. This hydrogen venting pipe gas fire extinguishing device can monitor the status of the venting pipe in real time through the temperature sensor, overcoming the difficulty of manually detecting flames. Once an abnormal temperature caused by a fire is detected, the controller can automatically start the fire extinguishing program within seconds to extinguish the flames in time, effectively solving the technical problem of difficulty in detecting and timely extinguishing fires in hydrogen venting pipes in the prior art. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of the hydrogen venting pipe gas fire extinguishing device provided in this embodiment of the utility model; Figure 2Electrical connection diagram of the hydrogen venting pipe gas fire extinguishing device provided for embodiments of this utility model.

[0016] Among them, 1-steam supply pipeline, 2-hydrogen venting pipeline, 3-main shut-off valve, 4-temperature sensor, and 5-automatic steam trap. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0019] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0020] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0021] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0022] like Figure 1 and Figure 2 As shown, this utility model provides a hydrogen venting pipe gas fire extinguishing device, including a steam supply pipeline 1, a fire extinguishing actuator, a fire detection unit, and a controller. The inlet end of the steam supply pipeline 1 is connected to a steam source, and the outlet end is connected to a hydrogen venting pipe 2. The fire extinguishing actuator includes a main shut-off valve 3 installed on the steam supply pipeline 1. The fire detection unit includes a temperature sensor 4 installed on the hydrogen venting pipe 2. The controller is electrically connected to the temperature sensor 4 and the main shut-off valve 3.

[0023] Under normal operating conditions, hydrogen vent pipe 2 is used to discharge excess hydrogen. When a fire occurs near the vent, temperature sensor 4 detects a temperature rise. A preset threshold is set for temperature sensor 4 in the controller. When the detected value reaches the preset threshold, the controller immediately sends a signal to open the main shut-off valve 3. Steam is injected into hydrogen vent pipe 2 from a steam source through steam supply pipe 1. The injection of steam dilutes the hydrogen concentration and lowers the temperature, thereby extinguishing the flames.

[0024] Steam supply pipeline 1 uses seamless steel pipe resistant to high temperature and pressure. The inlet end connects to the plant's steam network or a dedicated steam generator, and the outlet end connects to hydrogen vent pipeline 2 via a flange. The main shut-off valve 3 is an electric or pneumatic shut-off valve, which is closed by default and only opens in case of fire. Temperature sensor 4 is a platinum resistance thermometer, installed on hydrogen vent pipeline 2 near the vent outlet. The controller uses a programmable logic controller (PLC) with a built-in control program. When the temperature sensor 4 detects a preset threshold, the controller outputs a 24V DC signal to drive the main shut-off valve 3 to open. After steam injection, the hydrogen flame is extinguished through physical dilution and cooling.

[0025] To further improve steam quality, an automatic steam trap group 5 is added upstream of the main shut-off valve 3 on steam supply line 1. The automatic steam trap group 5 includes a float-type automatic steam trap 5 and maintenance valves located before and after it. The automatic steam trap 5 can automatically drain condensate from the pipeline, preventing water hammer and water carryover in the steam from affecting fire extinguishing effectiveness. The maintenance valves facilitate the isolation of the automatic steam trap 5 during maintenance without shutting down the entire system.

[0026] To enhance the reliability of fire detection, a flame detector is added near the vent of hydrogen vent pipe 2. The flame detector is an ultraviolet flame detector with a detection angle covering the vent area and an explosion-proof rating of IICT1. The flame detector is electrically connected to the controller. When the temperature sensor 4 detects a value reaching a preset threshold, or when the flame detector continuously detects a flame signal for more than a preset time (e.g., 1 second), the main shut-off valve 3 will be triggered to open. This dual detection mechanism reduces the risk of missed and false alarms.

[0027] Temperature sensor 4 is rated IICT1 for explosion protection to ensure safe operation in hydrogen-explosive environments. Its installation position is precisely controlled within 50mm of the vent to capture radiant heat from the flame and avoid response delays due to excessive distance.

[0028] The controller integrates a 5G remote communication module, enabling it to establish a data connection with a remote control center. The controller uploads real-time data such as temperature, flame status, and steam pressure to the control center and receives remote manual control commands. In case of automatic system failure or when manual intervention is required, the operator can remotely open the main shut-off valve 3 through the control center, enhancing system flexibility and emergency response capabilities.

[0029] A steam nozzle is installed at the outlet end of steam supply line 1. The nozzle has internal spiral guide vanes to create a swirling flow of steam, enhancing its mixing efficiency with hydrogen. The outlet section of the steam nozzle is designed with a porous structure, featuring multiple 2mm diameter nozzles arranged in a fan shape to expand the steam coverage area. This design optimizes steam diffusion, improving fire suppression speed and efficiency.

[0030] A pressure sensor is installed downstream of the main shut-off valve 3 on steam supply line 1, and the pressure sensor is electrically connected to the controller. The pressure sensor monitors the steam pressure in real time to ensure that it is maintained above 0.6 MPa. If the pressure is lower than the set value, the controller triggers an audible and visual alarm and sends an alarm message to the remote control center, prompting maintenance personnel to check the steam source or pipeline status.

[0031] A drain valve is installed at the bottom of the hydrogen vent pipe 2. The drain valve is a manual ball valve, which is opened periodically to remove condensate or impurities accumulated in the pipe, prevent blockage and corrosion, and extend the service life of the pipe.

[0032] In this embodiment, the steam operating pressure of steam supply pipeline 1 is set to 0.6 MPa, and the pipeline diameter is DN50 to ensure sufficient steam flow and fire extinguishing capacity. The controller adopts a modular design and has a self-testing function, periodically cyclically checking the status of each sensor and actuator. When a fire occurs, temperature sensor 4 and flame detector detect the signal almost simultaneously. The controller judges and opens the main shut-off valve 3 within milliseconds. Steam is injected at high speed through steam nozzles into hydrogen vent pipe 2, extinguishing the flame within 3-5 seconds. The entire system responds rapidly, leaves no residue after extinguishing the fire, and does not affect the subsequent operation of the equipment.

[0033] See Figure 1 The hydrogen venting pipe gas fire extinguishing device provided in this embodiment of the utility model has the following beneficial effects: The hydrogen venting pipe gas fire extinguishing device provided in this embodiment of the invention has an inlet end of a steam supply pipeline 1 connected to a steam source and an outlet end connected to a hydrogen venting pipe 2. The fire extinguishing actuator includes a main shut-off valve 3 installed on the steam supply pipeline 1. The fire detection unit includes a temperature sensor 4 installed on the hydrogen venting pipe 2. The controller is electrically connected to the temperature sensor 4 and the main shut-off valve 3. When the detected value of the temperature sensor 4 reaches a preset threshold, the controller controls the main shut-off valve 3 to open. This hydrogen venting pipe gas fire extinguishing device, by using the temperature sensor 4, can monitor the status of the venting pipe in real time, overcoming the difficulty of manually detecting flames. Once a temperature anomaly caused by a fire is detected, the controller can automatically initiate the fire extinguishing program within seconds, promptly extinguishing the flames. This effectively solves the technical problem in the prior art where it is difficult to detect and extinguish fires in hydrogen venting pipes 2 in a timely manner.

[0034] 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, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydrogen venting pipe gas fire extinguishing device, characterized in that: include: Steam supply piping, fire extinguishing actuators, fire detection units and controllers; The inlet end of the steam supply pipeline is connected to a steam source, and the outlet end is connected to a hydrogen venting pipeline. The fire extinguishing actuator includes a main shut-off valve installed on the steam supply pipeline; The fire detection unit includes a temperature sensor installed on the hydrogen vent pipe; The controller is electrically connected to the temperature sensor and the main shut-off valve. When the temperature sensor detects a value that reaches a preset threshold, it controls the main shut-off valve to open.

2. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: The steam supply pipeline is also equipped with an automatic steam trap assembly, which is located upstream of the main shut-off valve and is used to drain the condensate in the steam supply pipeline.

3. The hydrogen venting pipe gas fire extinguishing device according to claim 2, characterized in that: The automatic drain valve assembly includes an automatic drain valve and maintenance valves installed before and after it.

4. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: The fire detection unit further includes a flame detector; the flame detector is installed at the vent of the hydrogen vent pipe; the flame detector is electrically connected to the controller; when a fire occurs, the controller receives a signal from the flame detector, and when it receives the signal from the flame detector, it controls the main shut-off valve to open.

5. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: The temperature sensor has an explosion-proof rating greater than or equal to IICT1, and the distance between the installation position of the temperature sensor and the vent of the hydrogen vent pipe is less than or equal to 50mm.

6. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: Also includes: Steam nozzle; the steam nozzle is located at the outlet end of the steam supply pipeline, the interior of the steam nozzle is provided with a flow guiding structure that causes steam to swirl, and the outlet of the steam nozzle is provided with multiple nozzle holes.

7. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: Also includes: Pressure sensor; the pressure sensor is installed on the steam supply pipeline and is electrically connected to the controller for monitoring steam pressure.

8. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: The hydrogen vent pipe is equipped with a drain valve to drain the condensate inside the hydrogen vent pipe.

9. The hydrogen venting pipe gas fire extinguishing device according to claim 1, characterized in that: The steam supply pipeline has a steam working pressure greater than or equal to 0.6 MPa and a pipeline diameter greater than or equal to DN50.

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