Hydrogen evacuation system for sodium hypochlorite generator

Abstract

The utility model relates to sodium hypochlorite generator field discloses a hydrogen emptying system of sodium hypochlorite generator, is located between the discharge pipeline and the material bucket of sodium hypochlorite generator, including air mixer, connecting pipe and fan, and the air mixer includes airflow pipeline, mixing pipeline and injection pipe, and the fan communicates with airflow pipeline, and the injection pipe is located inside air mixer and the length direction of injection pipe is same with the length direction of airflow pipeline, and one end of connecting pipe communicates with discharge pipeline and the other end stretches into airflow pipeline inside and communicates with injection pipe, and one end of mixing pipeline communicates with airflow pipeline and the other end communicates with material bucket and outdoor environment simultaneously. The utility model discloses a high -speed airflow and the solution and hydrogen gas in the discharge pipeline are all into air mixer by the fan drum, and the solution and hydrogen gas in the discharge pipeline are sucked out by air mixer and realize the mixing of air and hydrogen gas, and the concentration of hydrogen gas is reduced greatly before emptying, and the security risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sodium hypochlorite generators, and more particularly to a hydrogen venting system for a sodium hypochlorite generator. Background Technology

[0002] A sodium hypochlorite generator is a device used to prepare sodium hypochlorite, a sterilizing agent for water bodies. Existing sodium hypochlorite generators generally operate on the principle of diaphragm-free electrolysis of sodium chloride solution. While electrolyzing to produce sodium hypochlorite solution, hydrogen gas is generated as a byproduct.

[0003] As attached Figure 1 As shown, existing sodium hypochlorite generators 1 typically have a built-in or external storage tank 2 for storing sodium hypochlorite solution. After electrolysis, the generated sodium hypochlorite solution and hydrogen gas are discharged together from the discharge pipe 11. A T-connector 12 is installed at the end of the discharge pipe 11. The hydrogen gas in the discharge pipe 11 passes through the T-connector 12 and naturally flows upward along the exhaust pipe 13 to the outdoor environment. At the same time, the sodium hypochlorite solution in the discharge pipe 11 passes through the T-connector 12 and naturally flows downward into the storage tank 2.

[0004] In the sodium hypochlorite generator 1 described above, as electrolysis continues, the continuously generated sodium hypochlorite solution and hydrogen gas flow freely in the discharge pipe 11 and naturally separate at the three-way pipe 12.

[0005] Because hydrogen is non-conductive, a small amount of hydrogen accumulating in the electrolyzer will reduce the conductivity of the electrolyte. Reduced electrolyte conductivity leads to increased power consumption and heat generation during electrolysis. More importantly, hydrogen is flammable and explosive; the high concentration of hydrogen in exhaust pipe 13 poses a safety hazard if directly vented, making this venting method unsuitable for the safe on-site preparation of sodium hypochlorite solution. Utility Model Content

[0006] To address the problems existing in the prior art, such as safety hazards during the natural venting of hydrogen produced by sodium hypochlorite generators and the accumulation of a small amount of hydrogen in the electrolytic cell affecting the electrolysis process, this invention aims to provide a hydrogen venting system for sodium hypochlorite generators. This system involves connecting an air mixer to the discharge pipe of the sodium hypochlorite generator. The high-speed airflow blown in by the blower, along with the solution and hydrogen in the discharge pipe, are all introduced into the air mixer. The air mixer draws out the solution and hydrogen from the discharge pipe, mixing them with air to significantly reduce the hydrogen concentration before venting, thereby reducing safety hazards.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A hydrogen venting system for a sodium hypochlorite generator, located between the discharge pipe and the material tank of the sodium hypochlorite generator, includes an air mixer, a connecting pipe, and a fan. The air mixer includes an airflow pipe, a mixing pipe, and a spray pipe. The outlet of the fan is connected to the airflow pipe. The diameter of the spray pipe is smaller than that of the airflow pipe. The spray pipe is located inside the air mixer, and its length direction is the same as that of the airflow pipe. One end of the connecting pipe is connected to the discharge pipe, and the other end extends into the airflow pipe and is connected to the spray pipe. One end of the mixing pipe is connected to the airflow pipe, and the mixing pipe is located at the end of the spray pipe away from the connecting pipe. The other end of the mixing pipe is connected to both the material tank and the outdoor environment.

[0008] The present invention is further configured to include a separation chamber located between the mixing pipe and the material tank. The separation chamber includes a drain pipe located at the top of the separation chamber and communicating with the separation chamber. The drain pipe leads to the outdoor environment, and the bottom of the separation chamber is connected to the material tank.

[0009] The present invention is further configured such that: the separation chamber also includes a return water pipe, the return water pipe is located between the separation chamber and the material bucket, and the highest position on the return water pipe is higher than the bottom surface of the separation chamber and lower than the mixing pipe in the vertical direction.

[0010] The present invention is further configured such that: the air mixer further includes a conical compression pipe, the larger diameter end of the compression pipe is connected to the airflow pipe, and the smaller diameter end of the compression pipe is connected to the mixing pipe.

[0011] The present invention is further configured such that: the injection pipe is located inside the compression pipe, and the diameter of the injection pipe is smaller than the diameter at the smallest end of the compression pipe.

[0012] The present invention is further configured such that: the length of the injection pipe is less than the length of the compression pipe, and the end of the injection pipe near the mixing pipe is located inside the injection pipe.

[0013] The present invention is further configured such that the axis of the injection pipe coincides with the axis of the compression pipe.

[0014] The present invention is further configured such that: the air mixer also includes at least two fixing rods, the fixing rods being located between the airflow pipe and the compression pipe, and the fixing rods being used to fix the injection pipe.

[0015] In summary, the beneficial effects achieved by this utility model are as follows: (1) During the operation of the sodium hypochlorite generator, the blower blows a large amount of air into the air mixer through the airflow pipe, and the discharge pipe sends hydrogen and sodium hypochlorite solution into the injection pipe inside the air mixer through the connecting pipe. When the airflow in the airflow pipe passes through the compression pipe, the gas flow cross section becomes smaller instantaneously due to the influence of the conical channel and the injection pipe, resulting in an instantaneous increase in gas velocity. This creates a low-pressure area in the injection pipe port area, which in turn attracts hydrogen and sodium hypochlorite solution inside the injection pipe, causing the hydrogen and sodium hypochlorite solution in the discharge pipe to be discharged quickly, preventing hydrogen from accumulating inside the sodium hypochlorite generator and affecting the electrolysis process. (2) After the hydrogen and sodium hypochlorite solution in the discharge pipe are drawn out, they enter the mixing pipe. In the mixing pipe, the hydrogen is mixed with a large amount of air, and the concentration of hydrogen is greatly reduced, thus solving the safety hazard. (3) The mixing pipe connects to the separation chamber. After the mixture of hydrogen and air and sodium hypochlorite solution enter the separation chamber, the sodium hypochlorite solution naturally falls to the bottom of the separation chamber and enters the material tank through the return water pipe. The mixture of hydrogen and air is rapidly discharged to the outdoor environment through the vent pipe at the top of the separation chamber under the air pressure generated by the continuous operation of the blower. The setting of the return water pipe can prevent the air pressure in the separation chamber from forcing some of the mixture of hydrogen and air into the material tank. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the specification will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the sodium hypochlorite generator and the material tank in the background art of this utility model; Figure 2 This is a schematic diagram of the pipeline connection of the hydrogen venting system of the sodium hypochlorite generator in this utility model; Figure 3 This is a schematic diagram of the composition and structure of the hydrogen venting system of the sodium hypochlorite generator in this utility model.

[0018] In the diagram: 1. Sodium hypochlorite generator; 11. Discharge pipe; 12. T-pipe; 13. Exhaust pipe; 2. Material bucket; 3. Air mixer; 31. Airflow pipe; 32. Compression pipe; 33. Mixing pipe; 34. Fixing rod; 35. Injection pipe; 4. Connecting pipe; 5. Separation chamber; 51. Drain pipe; 52. Return water pipe; 6. Fan. Detailed Implementation

[0019] 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, not all embodiments. For ease of explanation, the terms "vertical", "horizontal", "left", "right", "upper", "lower", "inner", "outer", "bottom", etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] As attached Figure 2-3 As shown, a hydrogen venting system for a sodium hypochlorite generator is located between the discharge pipe 11 and the material tank 2 of the sodium hypochlorite generator 1. The system includes an air mixer 3, a connecting pipe 4, a separation chamber 5, and a blower 6.

[0022] The air mixer 3 includes an airflow duct 31, a compression duct 32, a mixing duct 33, an injection pipe 35, and a fixing rod 34.

[0023] The airflow duct 31 is a cylindrical tubular structure with the largest diameter. The airflow duct 31 is connected to the air outlet of the fan 6, thereby enabling the fan 6 to continuously blow a large amount of air into the air mixer 3. The fan 6 is a device in the prior art, and its structure will not be described in detail here.

[0024] The compression pipe 32 is a conical tubular structure. Its larger diameter end is connected to the airflow pipe 31, and its smaller diameter end is connected to the mixing pipe 33.

[0025] The mixing pipe 33 is a cylindrical tubular structure with the same diameter as the smaller end of the compression pipe 32. The end of the mixing pipe 33 away from the compression pipe 32 is connected to the separation chamber 5.

[0026] The injection pipe 35 is a cylindrical tubular structure with a diameter smaller than the diameter at the smallest end of the compression pipe 32. The length of the injection pipe 35 is also less than the length of the compression pipe 32, allowing it to be positioned inside the compression pipe 32. Furthermore, the end of the injection pipe 35 closest to the mixing pipe 33 remains inside the injection pipe 35. Consequently, a gap is formed between the outer wall of the injection pipe 35 and the inner wall of the compression pipe 32 at the end with the smaller diameter.

[0027] At least two fixing rods 34 are arranged radially between the airflow duct 31 and the compression duct 32. The fixing rods 34 are long and thin rods, and the two ends of the fixing rods 34 are fixedly connected to the inner wall of the airflow duct 31 and the outer wall of the injection pipe 35, respectively, so as to fix the injection pipe 35 without obstructing the gas flow in the airflow duct 31.

[0028] The connecting pipe 4 is used to pass hydrogen and sodium hypochlorite solution in the discharge pipe 11 into the injection pipe 35. One end of the connecting pipe 4 is connected to the discharge pipe 11 and the other end extends into the gas flow pipe 31 and is connected to the injection pipe 35.

[0029] In this embodiment, the axis of the injection pipe 35 coincides with the axis of the compression pipe 32. When the airflow in the airflow pipe 31 passes through the compression pipe 32, the flow area of ​​the airflow continuously decreases due to the influence of the conical compression pipe 32 and the injection pipe 35, thereby continuously increasing the gas velocity. According to Bernoulli's principle, the high-velocity gas forms a low-pressure zone at the port region of the injection pipe 35, which can generate an attraction effect on the hydrogen and sodium hypochlorite solution inside the injection pipe 35, causing the hydrogen and sodium hypochlorite solution to be rapidly ejected.

[0030] The high-speed airflow draws out the hydrogen and sodium hypochlorite solution from inside the injection pipe 35, and the three enter the mixing pipe 33 simultaneously. Inside the mixing pipe 33, the hydrogen and the high-speed airflow are mixed and then enter the separation chamber 5 along the mixing pipe 33.

[0031] The separation chamber 5 includes an empty pipe 51 and a return pipe 52. The separation chamber 5 is a vertically arranged cylindrical structure with a hemispherical top.

[0032] The vent pipe 51 is located at the top of the separation chamber 5 and is connected to the separation chamber 5. The end of the vent pipe 51 leads to the outdoor environment, thereby venting the mixture of hydrogen and air that enters the separation chamber 5 to the outside. The hemispherical top also helps to completely vent the mixture in the separation chamber 5.

[0033] The return water pipe 52 is located at the bottom of the separation chamber 5 and communicates with it. The other end of the return water pipe 52 is connected to the material tank 2. The highest point of the return water pipe 52 is vertically higher than the bottom surface of the separation chamber 5 but lower than the mixing pipe, thus allowing sodium hypochlorite solution to accumulate at the bottom of the separation chamber 5 and in part of the return water pipe 52. Since the hydrogen-air mixture entering the separation chamber 5 carries a certain pressure, the sodium hypochlorite solution accumulated at the bottom of the separation chamber 5 acts as a liquid seal, preventing the mixed gas from entering the material tank 2 along the return water pipe 52.

[0034] The implementation principle of the above embodiments is as follows: When the sodium hypochlorite generator 1 is operating, the fan 6 blows a large amount of air through the airflow pipe 31 into the compression pipe 32. The low-pressure zone formed at the end of the compression pipe 32 continuously draws out the hydrogen and sodium hypochlorite solution from inside the injection pipe 35. After being drawn out, the hydrogen and sodium hypochlorite solution enter the mixing pipe 33, where the hydrogen mixes with a large amount of air, significantly reducing the hydrogen concentration. After entering the separation chamber 5, the sodium hypochlorite solution falls naturally under its own weight and accumulates at the bottom of the separation chamber 5, forming a liquid seal. Only when the liquid level in the separation chamber 5 is higher than the highest point of the return water pipe 52 can the excess sodium hypochlorite solution enter the material tank 2 through the return water pipe 52. Meanwhile, the hydrogen and air mixture is rapidly discharged to the outdoor environment from the vent pipe 51 at the top of the separation chamber 5 under pressure, solving the hydrogen safety hazard and preventing hydrogen accumulation inside the sodium hypochlorite generator 1.

[0035] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.

Claims

1. A hydrogen venting system for a sodium hypochlorite generator, located between the discharge pipe (11) and the material tank (2) of the sodium hypochlorite generator (1), characterized in that, The device includes an air mixer (3), a connecting pipe (4), and a fan (6). The air mixer (3) includes an airflow pipe (31), a mixing pipe (33), and a jet pipe (35). The outlet of the fan (6) is connected to the airflow pipe (31). The diameter of the jet pipe (35) is smaller than the diameter of the airflow pipe (31). The jet pipe (35) is located inside the air mixer (3) and its length direction is the same as that of the airflow pipe (31). One end of the connecting pipe (4) is connected to the discharge pipe (11), and the other end extends into the airflow pipe (31) and is connected to the jet pipe (35). One end of the mixing pipe (33) is connected to the airflow pipe (31), and the mixing pipe (33) is located at the end of the jet pipe (35) away from the connecting pipe (4). The other end of the mixing pipe (33) is connected to both the material bucket (2) and the outdoor environment.

2. The hydrogen venting system for the sodium hypochlorite generator according to claim 1, characterized in that, It also includes a separation chamber (5), which is located between the mixing pipe (33) and the material bucket (2). The separation chamber (5) includes a drain pipe (51), which is located at the top of the separation chamber (5) and communicates with the separation chamber (5). The drain pipe (51) leads to the outdoor environment, and the bottom of the separation chamber (5) is communicated with the material bucket (2).

3. The hydrogen venting system for the sodium hypochlorite generator according to claim 2, characterized in that, The separation chamber (5) also includes a return water pipe (52), which is located between the separation chamber (5) and the material bucket (2). The highest position of the return water pipe (52) is higher than the bottom surface of the separation chamber (5) and lower than the mixing pipe in the vertical direction.

4. The hydrogen venting system for the sodium hypochlorite generator according to claim 1, characterized in that, The air mixer (3) also includes a conical compression pipe (32), the larger diameter end of which is connected to the airflow pipe (31), and the smaller diameter end of which is connected to the mixing pipe (33).

5. The hydrogen venting system for the sodium hypochlorite generator according to claim 4, characterized in that, The injection pipe (35) is located inside the compression pipe (32), and the diameter of the injection pipe (35) is smaller than the diameter at the smallest end of the compression pipe (32).

6. The hydrogen venting system for the sodium hypochlorite generator according to claim 5, characterized in that, The length of the injection pipe (35) is less than the length of the compression pipe (32), and the end of the injection pipe (35) near the mixing pipe (33) is located inside the injection pipe (35).

7. The hydrogen venting system for the sodium hypochlorite generator according to claim 5 or 6, characterized in that, The axis of the injection pipe (35) coincides with the axis of the compression pipe (32).

8. The hydrogen venting system for the sodium hypochlorite generator according to claim 4, characterized in that, The air mixer (3) also includes at least two fixing rods (34), which are located between the airflow pipe (31) and the compression pipe (32) and are used to fix the injection pipe (35).

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