Nitrogen feeding internal environment gas balancing device of hydrogen hydrogenation machine

Abstract

The utility model relates to a nitrogen feeding internal environment gas balancing device of a hydrogen hydrogenation machine. Comprising a storage area of the platform, the storage area is of a hollow structure defined by a plurality of metal plates, a storage cavity is formed in the storage area, and shutter holes are formed in the metal plates; the balance assembly comprises a balance box, a detection head and an air inlet pipe, the balance box is detachably connected to the bottom of the storage cavity, a balance cavity is formed in the balance box, a plurality of air inlet holes communicated with the balance cavity are formed in the outer side wall of the balance box, the air inlet pipe is connected to the balance box, one end of the air inlet pipe is communicated with the balance cavity, and the other end of the air inlet pipe points to the shutter holes. The detection head is arranged on the outer side wall of the balance box and points to the storage cavity, and an air outlet is formed in the bottom of the balance box. The balance box is additionally arranged in the storage area of the storage tank, internal detection is carried out through the detection head on the back face of the outer side wall of the balance box, when mixed air has the risk of burning and explosion, external air and internal air are sucked to be mixed, and the mixing proportion is reduced so that the risk of burning and explosion can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment of hydrogenating machines, and particularly relates to a nitrogen-delivering internal environment gas balancing device of a hydrogenating machine. Background Art

[0002] Hydrogen energy is an emerging industry in recent years. Especially with the technological upgrade of new energy vehicles, hydrogen energy is a new type of clean energy that can meet the environmental protection requirements of new energy vehicles. Moreover, its hydrogen refueling method is different from charging at charging stations. The speed of hydrogen refueling is faster than charging, and the time consumed is between refueling and charging. In terms of cost, it is cheaper than pure oil, but slightly more expensive than electricity. It is a low-cost clean energy. Currently, there are few hydrogen refueling stations under construction, and the construction is in the process of accelerated construction. Because it is an emerging product, there are no mature response plans for the construction environment and operating environment it currently faces, especially in the relatively closed space in the storage tank storage area on the platform. When the leaked hydrogen and air reach a certain degree of mixing, there is a risk of explosion when encountering open flames. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a nitrogen delivery internal environment gas balancing device for a hydrogenation machine. A balancing box is added in the storage area of ​​the storage tank, and internal detection is performed through a detection head on the back of the outer wall. When there is a risk of combustion and explosion in the mixed air, external air and internal air are inhaled for mixing, and the mixing ratio is reduced to avoid the risk of combustion and explosion.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A nitrogen delivery internal environment gas balancing device for a hydrogenation machine includes a platform and a balancing assembly. The platform includes a storage area and an external machine area. The storage area is an internal hollow structure enclosed by a plurality of sheet metal plates. A storage cavity is provided in the storage area, and louver holes are provided on a plurality of sheet metal plates. The balancing assembly includes a balancing box, a detection head, an air intake pipe, an air intake fan, a partition plate and an air outlet fan. The balancing box is detachably connected to the bottom of the storage cavity. A balancing cavity is provided in the balancing box. A plurality of air intake holes communicating with the balancing cavity are provided on the outer side wall of the balancing box. The air intake pipe is connected to the balancing box. One end of the air intake pipe is connected to the balancing chamber, and the other end of the air intake pipe points to the louver hole. The detection head is arranged on the outer wall of the balancing box and points to the storage chamber. An air outlet is provided at the bottom of the balancing box; the air intake fan is arranged at the connection between the air intake pipe and the balancing box; the partition plate is placed horizontally in the balancing chamber, and the partition plate divides the balancing chamber into a mixing chamber and an air outlet chamber. The air intake hole and the air intake pipe are both connected to the mixing chamber. A vent is provided on the partition plate, and the air outlet fan covers the vent and is detachably connected to the partition plate; the power of the air outlet fan is greater than that of the air intake fan.

[0006] The hydrogenation machine adopts the nitrogen delivery internal environment gas balancing device of this structure. The storage area on the platform is surrounded by several sheet metal plates to form a relatively closed hollow structure. The hollow inner cavity is set as a storage cavity. The louver holes on the several sheet metal plates are used to achieve the replacement balance between the storage cavity and the external air. The best air replacement gas is nitrogen. Since the nitrogen content in the air accounts for 78%, introducing external air can achieve the nitrogen inhalation effect at the lowest cost. However, in the case of a large amount of hydrogen leakage in the storage tank, the louver holes can no longer meet the air balance in the storage cavity. The mixed gas will reach the combustion and explosion conditions in a short time. In order to avoid this situation, a balancing component is set for the gas balance of the internal environment.

[0007] A balancing chamber is provided in the balancing box, which is divided into a mixing chamber at the upper end and an air outlet chamber at the lower end by the horizontal placement of a partition plate. The purpose of the mixing chamber is to mix the air in the storage chamber with the air outside the storage chamber, thereby reducing the air mixing ratio in the storage chamber. Then the inhaled air needs to be drawn in from the outside, and one end of the intake pipe is connected to the mixing chamber, and the other end is directed to the louver hole. Optimally, an opening is provided at the end of the intake pipe pointing to the louver hole to increase the suction area, and an intake fan is provided at the connection between the intake pipe and the balancing box. By starting the intake fan, the air outside the louver hole can be sucked into the opening and thus enter the mixing chamber. In order to achieve the goal of sucking the air in the storage chamber into the mixing chamber for gas mixing, a vent is provided on the partition plate, and the outlet fan is covered on the vent. At the same time, an air intake hole is provided on the side wall of the balancing box. Therefore, when the outlet fan is started, The gas in the mixing chamber can be sucked into the outlet chamber, and the air in the outlet chamber can be discharged from the outlet hole. At this time, the air in the mixing chamber generates negative pressure. The mixing chamber in the negative pressure state will replenish air from the intake fan while also sucking air from the intake hole. In order to increase the air intake of the intake hole, the power of the outlet fan is set to be greater than the power of the intake fan. Therefore, when the outlet fan and the intake fan are started at the same time, the higher-power outlet fan will cause the air pressure in the mixing chamber to increase, while the power of the intake fan is constant. More air can only be sucked in from the intake hole. Therefore, the air in the storage chamber will be sucked into the mixing chamber by the intake hole and mixed with the air, and the mixed air will be discharged from the outlet hole to the storage chamber, thereby reducing the combustion and explosion ratio of the mixed air. The detection head can detect in real time that the air mixing ratio in the storage chamber is lower than the combustion and explosion value, ensuring that the hydrogen station is in a safe state.

[0008] Furthermore, the balancing assembly also includes a cover plate, which covers the side opening of the balancing box, the partition plate abuts against the inner wall of the cover plate, the air outlet is arranged on the cover plate and connected to the air outlet cavity, and the detection head is arranged on the side plate on the other side opposite to the side opening of the balancing box.

[0009] Compared with the existing technology, the advantages of the present invention are: the preliminary balanced replacement of the air in the storage chamber is achieved through the louver holes on the sheet metal plate, and then through the setting of the balance box, the opening of the intake pipe is directed to the louver holes to inhale the air outside the storage chamber, and the exhaust fan with a power greater than that of the intake fan sucks the air and the air in the storage chamber into the mixing chamber at the same time, thereby achieving air mixing in the mixing chamber, and the mixed air is re-discharged into the storage chamber, reducing the combustion and explosion ratio of the mixed air in the storage chamber, and the detection head detects in real time that the air mixing ratio in the storage chamber is lower than the combustion and explosion value, ensuring that the hydrogen station is in a safe state. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is a top view of the utility model;

[0013] Figure 3 For the utility model Figure 2 AA cross-sectional view and air duct flow diagram;

[0014] Figure 4 This is a three-dimensional diagram of the balancing component of the present utility model;

[0015] Figure 5 This is an exploded schematic diagram of the balancing component of the present invention.

[0016] Among them: 1. Platform; 11. Storage area; 111. Storage cavity; 12. External machine area; 13. Sheet metal plate; 131. Louver hole; 2. Balance assembly; 21. Balance box; 211. Balance cavity; 212. Air inlet; 213. Air outlet; 214. Mixing cavity; 215. Air outlet cavity; 22. Detection head; 23. Air inlet pipe; 24. Air inlet fan; 25. Partition plate; 251. Air vent; 26. Air outlet fan; 27. Cover plate. DETAILED DESCRIPTION

[0017] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0018] The specific implementation of the present invention will be described below with reference to the accompanying drawings:

[0019] like Figure 1-5 As shown, a nitrogen delivery internal environment gas balancing device for a hydrogenator includes a platform 1 and a balancing assembly 2. The platform 1 includes a storage area 11 and an external machine area 12. The storage area 11 is an internal hollow structure enclosed by a plurality of sheet metal plates 13. A storage cavity 111 is provided in the storage area 11, and louver holes 131 are provided on the plurality of sheet metal plates 13; the balancing assembly 2 includes a balancing box 21, a detection head 22, an air intake pipe 23, an air intake fan 24, a partition plate 25 and an air outlet fan 26. The balancing box 21 is detachably connected to the bottom of the storage cavity 111. A balancing cavity 211 is provided in the balancing box 21. A plurality of air intake holes 212 communicating with the balancing cavity 211 are provided on the outer side wall of the balancing box 21. The air intake pipe 23 is connected to the balancing box 21. One end of the air intake pipe 23 is connected to the balancing chamber 211, and the other end of the air intake pipe 23 points to the louver hole 131. The detection head 22 is arranged on the outer wall of the balancing box 21 and points to the storage chamber 111. An air outlet 213 is provided at the bottom of the balancing box 21; the air intake fan 24 is arranged at the connection between the air intake pipe 23 and the balancing box 21; the partition plate 25 is placed horizontally in the balancing chamber 211, and the partition plate 25 divides the balancing chamber 211 into a mixing chamber 214 and an air outlet chamber 215. The air intake hole 212 and the air intake pipe 23 are both connected to the mixing chamber 214. A vent 251 is provided on the partition plate 25. The air outlet fan 26 covers the vent 251 and is detachably connected to the partition plate 25; the power of the air outlet fan 26 is greater than that of the air intake fan 24.

[0020] Furthermore, the balancing assembly 2 also includes a cover plate 27, which covers the side opening of the balancing box 21, the partition plate 25 abuts against the inner wall of the cover plate 27, the air outlet 213 is arranged on the cover plate 27 and connected to the air outlet cavity 215, and the detection head 22 is arranged on the side panel on the other side opposite to the side opening of the balancing box 21.

[0021] Description of the working method of this utility model:

[0022] The hydrogenator adopts a nitrogen delivery internal environment gas balancing device of this structure. The storage area 11 on the platform 1 is surrounded by several sheet metal plates 13 to form a relatively closed hollow structure. The hollow inner cavity is set as a storage cavity 111. The louver holes 131 on the several sheet metal plates 13 are used to achieve a replacement balance between the storage cavity 111 and the external air. The best air replacement gas is nitrogen. Since the nitrogen content in the air accounts for 78%, introducing external air can achieve the nitrogen inhalation effect at the lowest cost. However, in the case of a large amount of hydrogen leakage in the storage tank, the louver holes 131 can no longer meet the air balance in the storage cavity 111. The mixed gas will reach the combustion and explosion conditions in a short time. In order to avoid this situation, a balancing component 2 is provided for the gas balance of the internal environment.

[0023] A balancing chamber 211 is provided in the balancing box 21, and the balancing chamber 211 is divided into a mixing chamber 214 at the upper end and an air outlet chamber 215 at the lower end by the horizontal placement of the partition plate 25. The purpose of the mixing chamber 214 is to mix the air in the storage chamber 111 with the air outside the storage chamber 111, thereby reducing the air mixing ratio in the storage chamber 111. Then the inhaled air needs to be drawn in from the outside, and one end of the air inlet pipe 23 is connected to the mixing chamber 214, and the other end is directed to the louver hole 131. Optimally, the end of the air inlet pipe 23 pointing to the louver hole 131 is An opening is provided at the bottom to increase the suction area. An intake fan 24 is provided at the connection between the intake pipe 23 and the balance box 21. By starting the intake fan 24, the air outside the louver hole 131 can be sucked into the opening, and then enter the mixing chamber 214. In order to achieve the purpose of sucking the air in the storage chamber 111 into the mixing chamber 214 for gas mixing, a vent 251 is provided on the partition plate 25. By covering the vent 251 with the exhaust fan 26, and at the same time providing an air intake hole 212 on the side wall of the balance box 21, when the exhaust is started, When the air fan 26 is turned on, the gas in the mixing chamber 214 can be sucked into the air outlet chamber 215, and the air in the air outlet chamber 215 can be discharged from the air outlet hole 213. At this time, the air in the mixing chamber 214 generates a negative pressure. The mixing chamber 214 in the negative pressure state will replenish air from the air inlet fan 24 while also sucking air from the air inlet hole 212. In order to increase the air intake of the air inlet hole 212, the power of the air outlet fan 26 is set to be greater than the power of the air inlet fan 24. Therefore, when the air outlet fan 26 and the air inlet fan 24 are started at the same time, the higher power fan The exhaust fan 26 will cause the air pressure in the mixing chamber 214 to increase, while the power of the intake fan 24 is constant. More air can only be sucked in from the air inlet 212. Therefore, the air in the storage chamber 111 will be sucked into the mixing chamber 214 by the air inlet 212 to mix with the air, and the mixed air will be exported from the air outlet 213 to the storage chamber 111, thereby reducing the combustion and explosion ratio of the mixed air. The detection head 22 can detect in real time that the air mixing ratio in the storage chamber 111 is lower than the combustion and explosion value, ensuring that the hydrogen station is in a safe state.

[0024] In order to facilitate maintenance, an opening is set on one side of the balance box 21, and the opening points to the sheet metal plate 13 between the storage area 11 and the external unit area 12. The cover plate 27 covering the opening is detachably connected to the balance box 21, and the air outlet 213 on the cover plate 27 is connected to the air outlet cavity 215. The air outlet 213 on the cover plate 27 points downward, so the air in the mixing chamber 214 is discharged from the air outlet 213 after entering the air outlet cavity 215, and the air flow will flow downward and enter the storage chamber 1 11, and the detection head 22 is set on the side panel on the other side opposite to the side opening of the balance box 21. The air mixed in the storage chamber 111 needs a period of time to be detected by the detection head 22 during the surging process. When the detection head 22 can detect that the air ratio has decreased, it takes a period of time to avoid the detection head 22 being too close to the air outlet 213, resulting in the false detection of the newly mixed air and the misjudgment that the air ratio of the storage chamber 111 has been reduced, thereby stopping the air replacement.

[0025] The beneficial effects of the present invention are as follows: preliminary balanced replacement of the air in the storage chamber 111 is achieved through the louver holes 131 on the sheet metal plate 13, and then through the setting of the balance box 21, the opening of the intake pipe 23 is directed to the louver holes 131 for inhaling air outside the storage chamber 111, and the air and the air in the storage chamber 111 are simultaneously inhaled into the mixing chamber 214 by the exhaust fan 26 whose power is greater than that of the intake fan 24, so as to achieve mixing of the air in the mixing chamber 214, and the mixed air is re-discharged into the storage chamber 111, thereby reducing the combustion and explosion ratio of the mixed air in the storage chamber 111, and the detection head 22 detects in real time that the air mixing ratio in the storage chamber 111 is lower than the combustion and explosion value, thereby ensuring that the hydrogen station is in a safe state.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A nitrogen supply internal environment gas balancing device for a hydrogenation machine, characterized by: It includes a platform and a balancing component, the platform includes a storage area and an external machine area, the storage area is an internal hollow structure surrounded by several sheet metal plates, a storage cavity is provided in the storage area, and louver holes are provided on several sheet metal plates; the balancing component includes a balancing box, a detection head and an air intake pipe, the balancing box is detachably connected to the bottom of the storage cavity, a balancing cavity is provided in the balancing box, and several air intake holes connected to the balancing cavity are provided on the outer wall of the balancing box, the air intake pipe is connected to the balancing box, one end of the air intake pipe is connected to the balancing cavity, and the other end of the air intake pipe points to the louver hole, the detection head is arranged on the outer wall of the balancing box and points to the storage cavity, and an air outlet is provided at the bottom of the balancing box.

2. The nitrogen supply internal environment gas balancing device of the hydrogenation machine according to claim 1, characterized in that: The balancing assembly further includes an air intake fan, which is arranged at the connection between the air intake pipe and the balancing box.

3. The nitrogen supply internal environment gas balancing device of the hydrogenation machine according to claim 2, characterized in that: The balancing assembly also includes a partition plate and an exhaust fan. The partition plate is placed horizontally in the balancing chamber. The partition plate divides the balancing chamber into a mixing chamber and an exhaust chamber. The air inlet hole and the air inlet pipe are both connected to the mixing chamber. A vent is provided on the partition plate. The exhaust fan covers the vent and is detachably connected to the partition plate.

4. The nitrogen supply internal environment gas balancing device of the hydrogenation machine according to claim 3, characterized in that: The power of the exhaust fan is greater than the power of the intake fan.

5. The nitrogen supply internal environment gas balancing device of the hydrogenation machine according to claim 4, characterized in that: The balancing assembly also includes a cover plate, which covers the side opening of the balancing box, the partition plate abuts against the inner wall of the cover plate, the air outlet is arranged on the cover plate and connected to the air outlet cavity, and the detection head is arranged on the side plate on the other side opposite to the side opening of the balancing box.

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