Discharging device for ensuring hydrogen safety of sodium hypochlorite generator
By designing an emission device including a mixing pipe, a hydrogen intake pipe, an air intake pipe, an exhaust pipe and a return pipe, the coordinated work of the hydrogen concentration sensor and a solenoid valve is used to solve the problem that hydrogen in the sodium hypochlorite generator is difficult to dilute to a safe concentration, significantly reducing safety risks and achieving automated control of hydrogen emissions.
Patent Information
- Application Number
- CN202421582541.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The hydrogen generated by the sodium hypochlorite generator during electrolysis is difficult to dilute to a safe concentration, resulting in the hydrogen concentration exceeding the emission standards, which poses a major safety hazard.
An emission device including a mixing pipe, a hydrogen intake pipe, an air intake pipe, an exhaust pipe and a return pipe was designed. A hydrogen concentration sensor and a solenoid valve were installed inside. By precisely controlling the mixing ratio of hydrogen and air, the hydrogen concentration is always lower than the explosion limit.
By monitoring the hydrogen concentration in real time and accurately controlling the mixing of hydrogen and air, the safety risks during the use of sodium hypochlorite generators are significantly reduced, and the automatic control of hydrogen emissions is achieved, and the possibility of human operation errors is reduced.
Smart Images
Figure CN222829410U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen emission, in particular to an emission device for ensuring the safety of hydrogen in a sodium hypochlorite generator. Background Art
[0002] Sodium hypochlorite generator is a kind of equipment widely used in water treatment and disinfection process. Its working principle is to produce sodium hypochlorite solution by electrolyzing salt water. However, in the electrolysis process, in addition to the target product sodium hypochlorite, a large amount of hydrogen is also produced. Hydrogen is highly reactive and flammable, and its explosion limit in air is 4%-75% (volume ratio). Therefore, ensuring the safe discharge of hydrogen is an important part of the design of sodium hypochlorite generator.
[0003] At present, some sodium hypochlorite generators use simple exhaust fans or natural ventilation to discharge hydrogen, but this method cannot ensure that the hydrogen is diluted to below a safe concentration. The hydrogen concentration exceeds the emission standard, and the emission creates a great safety hazard.
[0004] To this end, the present application document provides a discharge device for ensuring the safety of hydrogen gas from a sodium hypochlorite generator. Summary of the invention
[0005] The purpose of the utility model is to solve the problems raised in the above background technology and provide a discharge device for ensuring the safety of hydrogen in a sodium hypochlorite generator.
[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:
[0007] A device for ensuring the safety of hydrogen emission from a sodium hypochlorite generator comprises a mixing pipe, wherein the mixing pipe is connected with a hydrogen intake pipe, an air intake pipe, an exhaust pipe and a return pipe, the other end of the return pipe is connected with the air intake pipe, a hydrogen concentration sensor is arranged inside the mixing pipe, the other end of the return pipe is connected with the air intake pipe, a first solenoid valve is arranged on the hydrogen intake pipe, a second solenoid valve is arranged on the exhaust pipe, and a third solenoid valve is arranged on the return pipe, and the safe emission of hydrogen can be achieved through the coordinated work of the first solenoid valve, the second solenoid valve and the third solenoid valve.
[0008] Preferably, the exhaust pipe is close to the top of the mixing pipe, and the other end of the exhaust pipe faces upward.
[0009] Preferably, a connecting plate is installed between the inner walls of the mixing pipe, and a rotating rod located on the same straight line as the central axis of the mixing pipe is rotatably connected between the connecting plate and the inner wall of one end of the mixing pipe, and a plurality of arc-shaped blades distributed in an array are fixed on the rotating rod, and the plurality of arc-shaped blades, the hydrogen intake pipe and the air intake pipe are located on the same plane.
[0010] Preferably, one end of the arc-shaped side of the arc-shaped blade is in contact with the inner wall of the mixing pipe.
[0011] Preferably, a plurality of evenly distributed spoilers are fixed on the rotating rod. Beneficial Effects
[0012] The utility model can accurately control the mixing ratio of hydrogen and air through the settings of solenoid valve one, solenoid valve two and solenoid valve three, ensure that the hydrogen concentration is always lower than the explosion limit, thereby significantly reducing the safety risk during the use of the generator, and at the same time realizes automatic control of hydrogen emission, reducing the possibility of human operation errors. The hydrogen concentration sensor can monitor the hydrogen concentration in real time and feedback information in time, so that the operator can make a quick response. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0015] Figure 2 For this utility model Figure 1 A three-dimensional cross-sectional view of
[0016] Figure 3 It is a three-dimensional structural schematic diagram of part of the structure of the utility model.
[0017] Figure 1-Figure 3 middle:
[0018] 1. Mixing pipe; 2. Hydrogen intake pipe; 3. Air intake pipe; 4. Exhaust pipe; 5. Reflux pipe; 11. Hydrogen concentration sensor; 12. Connecting plate; 13. Rotating rod; 14. Curved blade; 15. Spoiler; 21. Solenoid valve 1; 41. Solenoid valve 2; 51. Solenoid valve 3. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.
[0020] The present application provides a device for ensuring the safety of hydrogen emission from a sodium hypochlorite generator, which is mainly used to solve the problem that some sodium hypochlorite generators use a simple exhaust fan or natural ventilation method to emit hydrogen, but this method is difficult to ensure that the hydrogen is diluted to below the safe concentration, the hydrogen concentration exceeds the emission standard, and the emission generates a large safety hazard, and provides the following technical solutions, which will be combined with Figure 1-Figure 3 Make a detailed description:
[0021] A device for ensuring the safety of hydrogen emission from a sodium hypochlorite generator mainly comprises a mixing pipe 1, which is arranged at the outlet of an electrolytic cell of the sodium hypochlorite generator. The mixing pipe 1 is connected with a hydrogen intake pipe 2, an air intake pipe 3, an exhaust pipe 4 and a return pipe 5. The hydrogen intake pipe 2 is connected to the outlet of the electrolytic cell of the sodium hypochlorite generator, and the other end of the return pipe 5 is connected to the air intake pipe 3. A hydrogen concentration sensor 11 is arranged inside the mixing pipe 1 for real-time monitoring of hydrogen concentration. The other end of the return pipe 5 is connected to the air intake pipe 3. A solenoid valve 1 21 is arranged on the hydrogen intake pipe 2, a solenoid valve 2 41 is arranged on the exhaust pipe 4, and a solenoid valve 3 51 is arranged on the return pipe 5. Through the coordinated work of the solenoid valve 1 21, the solenoid valve 2 41 and the solenoid valve 3 51, safe emission of hydrogen can be achieved. When the device is used, the solenoid valve 1 21 is first opened, hydrogen enters the interior of the mixing pipe 1 through the hydrogen intake pipe 2, and air enters the interior of the mixing pipe 1 through the air intake pipe 3. The intake pipe 3 enters the interior of the mixing pipe 1 to mix with the hydrogen, and then the hydrogen concentration sensor 11 detects the concentration of hydrogen. When the emission standard is reached, the solenoid valve 2 41 is opened to discharge the hydrogen. If the concentration is high, the solenoid valve 1 21 and the solenoid valve 2 41 are closed, and the solenoid valve 3 51 is opened. The gas inside the mixing pipe 1 flows back to the interior of the air intake pipe 3 through the reflux pipe 5, and then fresh air enters the interior of the mixing pipe 1 again for dilution. When the concentration reaches the emission standard, the solenoid valve 3 51 is closed, the solenoid valve 2 41 is opened, and the hydrogen is discharged. The device can ensure that the hydrogen is fully diluted to a safe concentration before discharge through real-time monitoring of the hydrogen concentration sensor 11 and precise control of the solenoid valve 1 21, the solenoid valve 2 41, and the solenoid valve 3 51. The coordinated work of the solenoid valve 1 21, the solenoid valve 2 41, and the solenoid valve 3 51 provides multi-level control, increases the safety of the system, and prevents hydrogen accumulation and potential explosion risks.
[0022] For details, please refer to Figure 2The exhaust pipe 4 is close to the top of the mixing pipe 1, and the other end of the exhaust pipe 4 is facing upward, ensuring that the mixed gas of hydrogen and air can be guided from the top of the mixing pipe 1 to the exhaust pipe 4, and utilizing the natural rising characteristics of the gas to help the mixed gas of hydrogen and air to be discharged upward more effectively, reducing accumulation in low places, and helping hydrogen to disperse quickly, reducing the risk of accumulation in low places and reaching the explosion limit.
[0023] In this example, see Figure 2 and Figure 3 A connecting plate 12 is installed between the inner walls of the mixing pipe 1, and a rotating rod 13 located on the same straight line as the central axis of the mixing pipe 1 is rotatably connected between the connecting plate 12 and the inner wall of one end of the mixing pipe 1. A plurality of arc blades 14 distributed in an array are fixed on the rotating rod 13. The plurality of arc blades 14, the hydrogen intake pipe 2 and the air intake pipe 3 are located on the same plane. When hydrogen and air are filled into the interior of the mixing pipe 1, the airflow drives the arc blades 14 to rotate, thereby achieving mixing of hydrogen and air, improving mixing efficiency, and avoiding the problem of excessively high or low local concentration of gas.
[0024] For further information, see Figure 2 One end of the arc side of the arc blade 14 is in contact with the inner wall of the mixing tube 1 to ensure good sealing between the blade and the inner wall. The airflow can better drive the arc blade 14 to rotate, reducing the resistance of gas flow and improving the mixing efficiency of hydrogen and air. The airflow blows the arc blade 14 to rotate, which can reduce energy consumption.
[0025] For further information, see Figure 2 and Figure 3 A number of evenly distributed spoilers 15 are fixed on the rotating rod 13, the arc-shaped blades 14 drive the rotating rod 13 to rotate, and the rotating rod 13 drives the number of spoilers 15 to rotate. The spoilers 15 enhance the mixing of hydrogen and air by disturbing the airflow, and improve the mixing efficiency. The evenly distributed spoilers 15 help to achieve uniform distribution of gas inside the mixing pipe 1, avoid gas accumulation and dead corners, and help to more effectively control the concentration of hydrogen and reduce safety risks by improving the mixing efficiency of hydrogen and air.
[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A discharge device for ensuring the safety of hydrogen from a sodium hypochlorite generator, characterized in that: The invention comprises a mixing pipe (1), wherein the mixing pipe (1) is connected to a hydrogen intake pipe (2), an air intake pipe (3), an exhaust pipe (4) and a return pipe (5), wherein the other end of the return pipe (5) is connected to the air intake pipe (3), a hydrogen concentration sensor (11) is arranged inside the mixing pipe (1), and the other end of the return pipe (5) is connected to the air intake pipe (3), a solenoid valve 1 (21) is arranged on the hydrogen intake pipe (2), a solenoid valve 2 (41) is arranged on the exhaust pipe (4), and a solenoid valve 3 (51) is arranged on the return pipe (5), and the safe discharge of hydrogen can be achieved through the coordinated operation of the solenoid valve 1 (21), the solenoid valve 2 (41) and the solenoid valve 3 (51).
2. A discharge device for ensuring the safety of hydrogen in a sodium hypochlorite generator according to claim 1, characterized in that: The exhaust pipe (4) is close to the top of the mixing pipe (1), and the other end of the exhaust pipe (4) faces upward.
3. A discharge device for ensuring the safety of hydrogen in a sodium hypochlorite generator according to claim 1, characterized in that: A connecting plate (12) is installed between the inner walls of the mixing pipe (1), and a rotating rod (13) located on the same straight line as the central axis of the mixing pipe (1) is rotatably connected between the connecting plate (12) and the inner wall of one end of the mixing pipe (1), and a plurality of arc-shaped blades (14) distributed in an array are fixed to the rotating rod (13), and the plurality of arc-shaped blades (14), the hydrogen intake pipe (2) and the air intake pipe (3) are located on the same plane.
4. A discharge device for ensuring the safety of hydrogen in a sodium hypochlorite generator according to claim 3, characterized in that: One end of the arc-shaped side of the arc-shaped blade (14) is in contact with the inner wall of the mixing pipe (1).
5. A discharge device for ensuring the safety of hydrogen in a sodium hypochlorite generator according to claim 3, characterized in that: A plurality of evenly distributed spoilers (15) are fixed on the rotating rod (13).