Explosion-proof structure of hydrogen production equipment

Abstract

The utility model discloses an explosion-proof structure of hydrogen production equipment, which comprises an explosion-proof area with an explosion-proof device, the explosion-proof area is provided with a hydrogen purification skid and a hydrogen production skid which are independently arranged, the bottom end of the hydrogen purification skid and the bottom end of the hydrogen production skid are respectively provided with an air inlet, and the bottom end of the hydrogen purification skid and the bottom end of the hydrogen production skid are respectively provided with an air outlet. Air outlets are formed in the top end of the hydrogen purification skid and the top end of the hydrogen production skid; and the air outlets are communicated with an exhaust fan. According to the utility model, the problem that the leakage of hydrogen in the closed skid in the existing hydrogen production equipment easily reaches the explosion range can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen production equipment, and particularly relates to an explosion-proof structure of a hydrogen production equipment. Background Art

[0002] The explosion limit range of hydrogen is very wide. When the volume concentration of hydrogen in the air is between 4.0% and 75.6%, the explosion condition can be reached.

[0003] In the electrolytic water hydrogen production equipment, the hydrogen production skid and the hydrogen purification skid belong to the closed structure. If hydrogen leakage occurs, the volume concentration of hydrogen in the closed skid is very likely to reach the explosion range, thus generating an explosion risk. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an explosion-proof structure of a hydrogen production equipment to solve the technical problem that hydrogen leakage in the existing closed skid of the hydrogen production equipment is likely to reach the explosion range.

[0005] The technical solution adopted to solve the above technical problem:

[0006] The utility model discloses an explosion-proof structure of a hydrogen production equipment, which includes an explosion-proof area with explosion-proof settings. The explosion-proof area is provided with an independently arranged hydrogen purification skid and a hydrogen production skid. The bottom ends of the hydrogen purification skid and the hydrogen production skid are both provided with air inlets, and the top ends of the hydrogen purification skid and the hydrogen production skid are both provided with air outlets. The air outlets are communicated with an exhaust fan.

[0007] The utility model has at least the following beneficial effects: The explosion-proof area has explosion-proof settings, reducing the possibility of explosion in the explosion-proof area and reducing the explosion range. The hydrogen purification skid and the hydrogen production skid are both arranged in the explosion-proof area. Since hydrogen leakage will occur during their working processes, the hydrogen purification skid and the hydrogen production skid are laid in the explosion-proof area for explosion-proof settings. The hydrogen purification skid and the hydrogen production skid are provided with air outlets, and the air outlets are communicated with an exhaust fan to extract the leaked hydrogen, preventing the volume concentration of hydrogen in the hydrogen purification skid and the hydrogen production skid from reaching the explosion range. The hydrogen purification skid and the hydrogen production skid are independently arranged, and the exhaust fan can extract air separately, improving the air extraction efficiency and the removal effect of hydrogen.

[0008] As a further improvement of the above technical solution, the hydrogen purification skid and the hydrogen production skid are respectively communicated with at least one exhaust fan.

[0009] With the above settings, when only the hydrogen purification skid or the hydrogen production skid leaks hydrogen, only the corresponding exhaust fan is started to reduce power waste. The exhaust fan is only responsible for the corresponding hydrogen purification skid or hydrogen production skid, reducing the working power of the exhaust fan while ensuring the hydrogen removal effect, and avoiding the overheating failure of the exhaust fan due to excessive working power, resulting in a fire and causing the leaked hydrogen to explode.

[0010] As a further improvement of the above technical solution, at least two of the exhaust fans are respectively connected to the outside of the hydrogen purification skid and the outside of the hydrogen production skid through pipelines.

[0011] With the above settings, at least two exhaust fans are respectively externally connected to the outside of the hydrogen purification skid and the outside of the hydrogen production skid, avoiding situations such as a fire caused by electric sparks generated when the exhaust fan is powered on or a fault, which ignites hydrogen and causes an explosion, and can reduce the explosion-proof settings of the exhaust fan and lower the cost.

[0012] As a further improvement of the above technical solution, an air volume switch is provided between the exhaust fan and the air outlet, and the exhaust fan is configured to be closed according to the air volume switch.

[0013] With the above settings, the air volume switch is used to prevent over-airflow or under-airflow between the hydrogen purification skid and the hydrogen production skid, ensuring the normal operation of the exhaust fan.

[0014] As a further improvement of the above technical solution, hydrogen detectors are respectively provided at the tops of the hydrogen purification skid and the hydrogen production skid, and the exhaust fan is configured to be turned on or off according to the hydrogen detectors.

[0015] With the above settings, the preset opening hydrogen volume and preset closing hydrogen volume of the exhaust fan can be set. When the hydrogen content in the hydrogen purification skid or the hydrogen production skid detected by the corresponding hydrogen detector is greater than or less than the preset opening hydrogen volume or preset closing hydrogen volume, the hydrogen detector automatically turns on or off the exhaust fan, making the explosion-proof structure of the hydrogen production equipment more intelligent and power-saving.

[0016] As a further improvement of the above technical solution, the hydrogen purification skid adopts a box-type structure to form a closed space. The hydrogen purification skid includes a plurality of box doors, and at least one of the box doors is provided with the air inlet.

[0017] With the above settings, the hydrogen purification skid is enclosed, ensuring that the negative pressure exhaust of the exhaust fan allows air to only enter from the air inlet and exit from the air outlet. Through multiple assembled box doors, it is easier to install components and structures inside the hydrogen purification skid before assembly. The air inlet is provided on the box door, making the setting of the air inlet simpler.

[0018] As a further improvement of the above technical solution, the hydrogen production skid adopts a box structure to form a closed space, and the hydrogen production skid includes a plurality of the box doors, and at least one of the box doors is provided with the air inlet.

[0019] With the above arrangement, the closed setting enables the exhaust fan to intake air from the air inlet and exhaust air from the air outlet inside the hydrogen production skid. The hydrogen production skid includes a plurality of box doors, making it easier to install components and structures inside the hydrogen production skid. The air inlet is provided on the box door, enabling a simple setting of the air inlet.

[0020] As a further improvement of the above technical solution, the air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged in a honeycomb pattern.

[0021] With the above arrangement, the plurality of air inlet holes arranged in a honeycomb pattern can make the air inlet structure stable, with strong bearing capacity and material saving, and can also enable uniform air input.

[0022] As a further improvement of the above technical solution, the explosion-proof structure of the hydrogen production equipment further includes a non-explosion-proof area without explosion-proof settings, and a deionized water skid is provided in the non-explosion-proof area.

[0023] With the above arrangement, the non-explosion-proof area does not adopt explosion-proof settings, and some skids that do not leak hydrogen during the hydrogen production process, such as deionized water skids, can be laid in the non-explosion-proof area. Therefore, it can be avoided that all skids used in the hydrogen production equipment are arranged in the explosion-proof area, reducing the setting cost of the explosion-proof structure of the hydrogen production equipment.

[0024] As a further improvement of the above technical solution, an explosion-proof wall is provided between the non-explosion-proof area and the explosion-proof area.

[0025] With the above arrangement, the non-explosion-proof area and the explosion-proof area are isolated to prevent the explosion in the explosion-proof area from spreading and the fire from spreading to the non-explosion-proof area, reducing losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The following further describes the present invention with reference to the drawings and embodiments;

[0027] Figure 1 is an exploded schematic view of the explosion-proof structure of the hydrogen production equipment provided by the embodiment of the present invention;

[0028] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0029] The reference signs in the drawings are as follows:

[0030] 100, explosion-proof area; 110, hydrogen purification skid; 120, hydrogen production skid;

[0031] 200, air inlet; 210, air inlet hole;

[0032] 300, air outlet;

[0033] 400, exhaust fan;

[0034] 500, cabinet door;

[0035] 600, air volume switch;

[0036] 700, hydrogen detector;

[0037] 800, non-explosion-proof area; 810, deionized water skid;

[0038] 900, explosion-proof wall. Detailed implementation manners

[0039] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0040] In the description of the present invention, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation on the present invention.

[0041] In the description of the present invention, if there are descriptions with words such as "several", its meaning is one or more, and the meaning of multiple is two or more. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there are descriptions of first, second, third, etc., they are only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0042] It should be noted that in the drawings, the X direction points from the rear side to the front side of the explosion-proof structure of the hydrogen production equipment; the Y direction points from the left side to the right side of the explosion-proof structure of the hydrogen production equipment; the Z direction points from the lower side to the upper side of the explosion-proof structure of the hydrogen production equipment.

[0043] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0044] Refer toFigures 1 to 2 , several embodiments of the explosion-proof structure of the hydrogen production equipment of the present utility model will be given below.

[0045] As Figure 1 and Figure 2 shown, the explosion-proof structure of the hydrogen production equipment in the embodiment of the present utility model includes an explosion-proof area 100, and the explosion-proof area 100 adopts explosion-proof settings, providing an effective safety measure for the explosion-proof structure of the hydrogen production equipment, preventing the mixed hydrogen and oxygen from exploding when encountering a fire source, and protecting the safety of personnel and the hydrogen production equipment.

[0046] It can be understood that some components or structures with explosion-proof properties or explosion-proof certifications are used in the explosion-proof area 100. The explosion-proof area 100 is provided with a hydrogen purification skid 110 and a hydrogen production skid 120. As Figure 1 shown, the skids that may leak hydrogen are laid in the explosion-proof area 100 to reduce the possibility of hydrogen explosion or mitigate the explosion range.

[0047] It can be understood that the bottom end of the hydrogen purification skid 110 is provided with an air inlet 200, and the top end is provided with an air outlet 300. The air outlet 300 is connected to an exhaust fan 400, as Figure 1 shown. The bottom end of the hydrogen production skid 120 is provided with an air inlet 200, and the top end is provided with an air outlet 300. The air outlet 300 is connected to an exhaust fan 400, as Figure 1 shown.

[0048] It can be understood that since the density of hydrogen is less than the density of air, the leaked hydrogen will rise and accumulate at the top of the hydrogen purification skid 110 or the hydrogen production skid 120.

[0049] With such a setting, the exhaust fan 400 can extract the air inside the hydrogen purification skid 110 and the hydrogen production skid 120 from the top end, thereby discharging the leaked hydrogen inside the hydrogen purification skid 110 and the hydrogen production skid 120, and making the hydrogen purification skid 110 and the hydrogen production skid 120 form a negative pressure area, so that the air inlet 200 at the bottom end sucks in fresh air from the outside, realizing the exchange of indoor and outdoor air, and avoiding the hydrogen volume concentration reaching the explosion range inside the hydrogen purification skid 110.

[0050] It can be understood that the hydrogen purification skid 110 and the hydrogen production skid 120 are separately and independently arranged, so that the two can be ventilated separately, the ventilation area of the exhaust fan 400 is reduced, the ventilation efficiency is improved, and the hydrogen is further prevented from reaching the explosion range after leakage.

[0051] It can be understood that the explosion-proof area 100 can be explosion-proof by taking explosion-proof measures for electrical appliances, mechanical equipment, etc. to prevent the introduction of fire sources; it can also adopt appropriate static electricity grounding and blasting isolation and other technologies to prevent the explosion of combustible gases; or adopt fire-fighting facilities and isolation facilities to prevent the expansion of the explosion fire.

[0052] In some embodiments, the air outlets 300 of the hydrogen purification skid 110 and the air outlets 300 of the hydrogen production skid 120 are connected to the same exhaust fan 400, so as to save the number of installed exhaust fans 400 and reduce the construction cost of the explosion-proof structure of the hydrogen production equipment. However, when the hydrogen purification skid 110 and the hydrogen production skid 120 need to evacuate air simultaneously, the working power of the exhaust fan 400 is too large, which easily causes the exhaust fan 400 to heat up, leading to a fire and thus igniting hydrogen to cause an explosion.

[0053] In this embodiment, there are at least two exhaust fans 400. At least one exhaust fan 400 is connected to the air outlet 300 of the hydrogen purification skid 110, and at least another exhaust fan 400 is connected to the air outlet 300 of the hydrogen production skid 120. When the hydrogen purification skid 110 and the hydrogen production skid 120 need to extract hydrogen simultaneously, the corresponding exhaust fans 400 extract the hydrogen from the hydrogen purification skid 110 and the hydrogen production skid 120 respectively, reducing the working power of the exhaust fan 400.

[0054] It can be understood that one or more air outlets 300 may be provided on the hydrogen purification skid 110, and each air outlet 300 is connected to an exhaust fan 400. The number of air outlets 300 is set according to the air extraction power of the exhaust fan 400 and the space volume of the hydrogen purification skid 110, so as to avoid the situation that the space of the hydrogen purification skid 110 is too large, the air extraction speed of a single exhaust fan 400 is less than the hydrogen leakage speed, and the hydrogen volume concentration reaches the explosion range in the hydrogen purification skid 110.

[0055] Similarly, one or more air outlets 300 may also be provided on the hydrogen production skid 120, and each air outlet 300 is connected to an exhaust fan 400.

[0056] In this embodiment, one air outlet 300 is provided on each of the air outlets 300 of the hydrogen purification skid 110 and the hydrogen production skid 120, as Figure 1 shown.

[0057] In some embodiments, the two exhaust fans 400 are respectively hidden and installed inside the hydrogen purification skid 110 and the hydrogen production skid 120, so as to make the outer surface of the explosion-proof structure of the hydrogen production equipment flat.

[0058] In this embodiment, pipes are respectively connected to the outside of the hydrogen purification skid 110 and the outside of the hydrogen production skid 120 at the air outlets 300, and the other ends of the pipes are connected to the exhaust fans 400, so that the two exhaust fans 400 are respectively located outside the hydrogen purification skid 110 and the hydrogen production skid 120, as Figure 1As shown, to avoid the situation where the air mixed with hydrogen in the hydrogen purification skid 110 and the hydrogen production skid 120 is ignited due to electric sparks or malfunctions caused by power connection of the hair dryer, resulting in an explosion.

[0059] It can be understood that the exhaust fan 400 externally connected to the hydrogen purification skid 110 and the hydrogen production skid 120 is convenient for maintenance.

[0060] It can be understood that an air volume switch 600 is provided on the pipeline between the exhaust fan 400 and the air outlet 300. The air volume switch 600 is electrically connected to the exhaust fan 400 so that the exhaust fan 400 is powered on or off according to the air volume switch 600, as Figure 1 shown. The air volume switch 600 is used to detect the change in air volume in the pipeline. The air volume switch 600 is set with a preset air volume. When there is no air in the pipeline or the detected air volume of the air volume switch 600 is lower than the preset air volume, the air volume switch 600 automatically cuts off the power supply connected to the exhaust fan 400 to prevent over-air or under-air in the hydrogen purification skid 110 and the hydrogen production skid 120 and ensure the normal operation of the exhaust fan 400.

[0061] It can be understood that hydrogen detectors 700 are respectively provided on the top of the hydrogen purification skid 110 and the top of the hydrogen production skid 120, as Figure 1 shown, to detect the hydrogen content in the internal air and facilitate the judgment of whether hydrogen leaks. Specifically, the explosion-proof structure of the hydrogen production equipment is provided with a controller, and the controller is electrically connected to the hydrogen detectors 700 and the exhaust fan 400 respectively so that the exhaust fan 400 can be opened or closed according to the hydrogen detector.

[0062] It can be understood that the controller is provided with a first hydrogen content. When the hydrogen content detected by the hydrogen detector 700 is greater than the first hydrogen content, the exhaust fan 400 is powered on and opened to extract the air containing hydrogen in the hydrogen purification skid 110.

[0063] Furthermore, the controller is provided with a second hydrogen content. When the hydrogen content detected by the hydrogen detector 700 is less than the second hydrogen content, the exhaust fan 400 is powered off and closed, and the exhaust fan 400 is automatically stopped to prevent the exhaust fan 400 from always being in the open state and wasting electric energy.

[0064] It can be understood that one or more hydrogen detectors 700 are respectively provided on the hydrogen purification skid 110 and the hydrogen production skid 120, and the number of hydrogen detectors 700 can be set according to the volume of the hydrogen purification skid 110 and the volume of the hydrogen production skid 120. In this embodiment, two hydrogen detectors 700 are arranged at intervals left and right on the hydrogen purification skid 110, and one hydrogen detector 700 is provided at the rear end of the top of the hydrogen production skid 120, as Figure 1 shown.

[0065] It can be understood that the hydrogen purification skid 110 adopts a box structure to form a closed space, providing a good airtight space for the negative pressure air extraction of the exhaust fan 400, ensuring that air enters from the air inlet 200 and discharges the air containing hydrogen from the air outlet 300 out of the hydrogen purification skid 110.

[0066] It can be understood that the hydrogen purification skid 110 with a box structure includes a plurality of box doors 500. The plurality of box doors 500 are arranged along the edge of the explosion-proof area 100, facilitating the assembly of components and structures inside the hydrogen purification skid 110. At least one box door 500 is provided with an air inlet 200, making the setting of the air inlet 200 simpler.

[0067] In this embodiment, the hydrogen purification skid 110 corresponds to the front end of the explosion-proof area 100. Three box doors 500 are laid along the left-right direction on the front side of the hydrogen purification skid 110. The bottom ends of two adjacent box doors 500 are provided with air inlets 200, as Figure 1 shown.

[0068] It can be understood that the hydrogen production skid 120 adopts a box structure to form a closed space, providing a good airtight space for the negative pressure air extraction of the exhaust fan 400, ensuring that air enters from the air inlet 200 and discharges the air containing hydrogen from the air outlet 300 out of the hydrogen production skid 120.

[0069] It can be understood that the hydrogen production skid 120 with a box structure includes a plurality of box doors 500. The plurality of box doors 500 are arranged along the edge of the explosion-proof area 100, facilitating the assembly of components and structures inside the hydrogen production skid 120. At least one box door 500 is provided with an air inlet 200, making the setting of the air inlet 200 simpler.

[0070] In this embodiment, the hydrogen production skid 120 corresponds to the right end of the explosion-proof area 100. One box door 500 is laid on each of the front side and the rear side of the hydrogen production skid 120. The bottom end of the box door 500 on the rear side is provided with two air inlets 200. Two box doors 500 are laid along the front-rear direction on the right side of the hydrogen production skid 120. The bottom end of the box door 500 at the rear end of the right side is provided with two air inlets 200, as Figure 1 shown.

[0071] It can be understood that the air inlet 200 of the hydrogen purification skid 110 is arranged forward, and the air inlets 200 of the hydrogen production skid 120 are arranged rightward and rearward, enabling the two to intake air from different directions and making the air be sucked in more evenly under negative pressure.

[0072] In this embodiment, the air inlet 200 includes a plurality of air inlet holes 210, and air is evenly input from the plurality of air inlet holes 210, as Figure 2As shown. The multiple air inlet holes 210 are arranged in a honeycomb pattern, making the air inlet 200 have a stable structure, strong bearing capacity and material saving.

[0073] It can be understood that the explosion-proof structure of the hydrogen production equipment further includes a non-explosion-proof area 800, such as Figure 1 As shown, the non-explosion-proof area 800 adopts non-explosion-proof settings. The non-explosion-proof area 800 uses some components or structures that do not have explosion-proof properties to reduce costs. During the hydrogen production process, the deionized water skid 810 does not generate or leak hydrogen. Therefore, the deionized water skid 810 is arranged in the non-explosion-proof area 800, such as Figure 1 As shown, the setting cost is reduced and the economic benefit of the explosion-proof structure of the hydrogen production equipment is improved.

[0074] It can be understood that an explosion-proof wall 900 is provided between the explosion-proof area 100 and the non-explosion-proof area 800, such as Figure 1 As shown, so that the hydrogen purification skid 110 and the hydrogen production skid 120 that will leak hydrogen are isolated from the deionized water skid 810 that will not leak hydrogen, preventing the explosion in the explosion-proof area 100 from spreading and the fire from spreading to the non-explosion-proof area 800, and reducing losses.

[0075] The above has specifically described the preferred embodiments of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without departing from the spirit of the present invention, and these equivalent variations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An explosion-proof structure of a hydrogen production equipment, characterized in that: The invention comprises an explosion-proof zone with explosion-proof facilities, wherein the explosion-proof zone is provided with independently arranged hydrogen purification skid and hydrogen production skid, the bottom end of the hydrogen purification skid and the bottom end of the hydrogen production skid are both provided with air inlets, the top end of the hydrogen purification skid and the top end of the hydrogen production skid are both provided with air outlets, and the air outlets are connected with exhaust fans.

2. The explosion-proof structure of the hydrogen production equipment according to claim 1, characterized in that: The hydrogen purification skid and the hydrogen production skid are respectively connected to at least one of the exhaust fans.

3. The explosion-proof structure of the hydrogen production equipment according to claim 2 is characterized in that: At least two of the exhaust fans are respectively connected to the outside of the hydrogen purification skid and the outside of the hydrogen production skid through pipelines.

4. The explosion-proof structure of the hydrogen production equipment according to claim 3 is characterized in that: An air volume switch is provided between the exhaust fan and the air outlet, and the exhaust fan is configured to be turned off according to the air volume switch.

5. The explosion-proof structure of the hydrogen production equipment according to claim 4, characterized in that: A hydrogen detector is provided on the top of the hydrogen purification skid and the top of the hydrogen production skid respectively, and the exhaust fan is configured to be turned on or off according to the hydrogen detector.

6. The explosion-proof structure of the hydrogen production equipment according to claim 1, characterized in that: The hydrogen purification skid adopts a box-type structure to form a closed space. The hydrogen purification skid includes a plurality of box doors, and at least one of the box doors is provided with the air inlet.

7. The explosion-proof structure of the hydrogen production equipment according to claim 6, characterized in that: The hydrogen production skid adopts a box-type structure to form a closed space. The hydrogen production skid includes a plurality of box doors, and at least one of the box doors is provided with the air inlet.

8. The explosion-proof structure of the hydrogen production equipment according to claim 7, characterized in that: The air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged in a honeycomb shape.

9. The explosion-proof structure of the hydrogen production equipment according to claim 1, characterized in that: It also includes a non-explosion-proof area with a non-explosion-proof setting, and the non-explosion-proof area is provided with a deionized water skid.

10. The explosion-proof structure of the hydrogen production equipment according to claim 9, characterized in that: An explosion-proof wall is provided between the non-explosion-proof area and the explosion-proof area.

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