Hydrogen supply device with buffering function

Abstract

The utility model relates to the technical field of supply devices, in particular to a hydrogen supply device with a buffering function, which comprises a bottom plate, a stand column, a mounting frame, a hydrogen production module, a buffering tank, a diaphragm supercharger, a hydrogen storage valve group module, a buffering module, a filling module, a hydrogenation gun and a safety assembly, the diaphragm supercharger is mounted on the bottom plate, the buffer module is mounted on the mounting frame, the hydrogen storage valve group module is mounted on the mounting frame, the filling module is mounted on the bottom plate through a vertical plate, the hydrogenation gun is communicated with the hydrogen storage valve group module, the inlet pressure of the diaphragm supercharger is stabilized through a buffer tank, and a hydrogen source enters the buffer module after being supercharged through the diaphragm supercharger; therefore, it is guaranteed that the hydrogen pressure is within a stable range, and the problem that in the using process of an existing device, although gas supply of the device is stable, the hydrogen pressure is often unstable in the using process, and consequently the working efficiency is affected is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to supply device technical field especially, it relates to a hydrogen supply device with buffer function. BACKGROUND

[0002] At normal temperature and pressure, hydrogen is a kind of extremely combustible, colorless transparent, odorless and tasteless gas. Hydrogen is the smallest gas in the world, in the catalytic cracking reaction of heavy oil, hydrogenation is often needed, hydrocracking is the improvement of catalytic cracking technology, under the condition of hydrogen, the dehydrogenation condensation reaction during catalytic cracking can be inhibited, and coke generation can be avoided, ammonia decomposition hydrogen production has a wide application in the field of hydrogen production due to its simple process, easy raw materials and reliable and economical operation of device. The process flow configuration of ammonia decomposition hydrogen production mainly includes liquid ammonia storage and purification device, ammonia decomposition furnace and hydrogen purification device etc. In the whole system, the role of hydrogen purification device is to purify the hydrogen containing a large amount of residual ammonia produced by ammonia decomposition furnace, adsorb the undecomposed ammonia in it, so as to supply hydrogen with very low residual ammonia content to the subsequent section. Ammonia purification device adopts double molecular sieve adsorption system, each adsorption system has two adsorption barrels, one is in adsorption use state, and the other is in regeneration state, two adsorption barrels are alternately adsorbed and regenerated.

[0003] In the whole ammonia decomposition hydrogen production system, the adsorption barrel in the purification device needs to complete the transformation of adsorption and regeneration frequently, and the valve also needs to be frequently opened and closed, which has great risk to the stability and reliability of the device. When the valve fails during switching, another set of adsorption system must be switched manually, which will cause the product hydrogen to be unable to supply for a period of time, thereby causing hydrogen interruption. In the current hydrogen anti-interruption supply solution, hydrogen grid is generally used as a backup system, when the device fails, the hydrogen in the hydrogen grid is used as gas. Such backup solution obviously has great waste and safety factors: first, hydrogen is an easy-to-burn and easy-to-explosive gas, using hydrogen grid to store hydrogen has the risk of ammonia leakage and explosion; second, the light density of hydrogen itself determines that the storage efficiency of gaseous hydrogen is not high, and the corresponding storage vessel also needs high working pressure, and the corresponding investment is also large; third, the cost of using hydrogen grid to supply hydrogen is high, and limited by the limited storage capacity of grid, the supply time is also relatively short;

[0004] The existing patent number CN204778813U discloses a hydrogen supply device capable of preventing hydrogen supply interruption, comprising a first purification barrel and a second purification barrel; a first cut-off valve is arranged on the inlet pipeline of the first purification barrel, and a first check valve is arranged on the outlet pipeline; a second cut-off valve is arranged on the inlet pipeline of the second purification barrel, and a second check valve is arranged on the outlet pipeline; the outlet pipeline of the first purification barrel and the outlet pipeline of the second purification barrel are both communicated with a hydrogen supply pipeline; in normal use, the first cut-off valve is opened, the second cut-off valve is closed, and the first purification barrel supplies hydrogen to the hydrogen supply pipeline; when the first purification barrel fails, the second cut-off valve is opened, the first cut-off valve is closed, and the second purification barrel supplies hydrogen to the hydrogen supply pipeline; through optimization of the process and perfection of the control, the problem of hydrogen supply interruption is solved by using smaller investment, the stability of device gas supply is ensured, and the economic advantage is fully reflected.

[0005] In the above manner, although the device gas supply is stable, hydrogen pressure is often unstable in use, thereby affecting work efficiency. Practical new type content

[0006] The utility model discloses a hydrogen supply device with buffering function, solves the problem that although the device gas supply is stable, hydrogen pressure is often unstable in use in the prior art, thereby affecting work efficiency.

[0007] To achieve the above object, the utility model provides a hydrogen supply device with buffering function, including protection mechanism, the protection mechanism includes bottom plate, stand, mounting bracket, hydrogen production module, buffer tank, diaphragm booster, hydrogen storage valve group module, cache module, filling module, hydrogen filling gun and safety assembly, the stand is fixedly installed on the bottom plate, the mounting bracket is fixedly installed on the upper end surface of the stand, the hydrogen production module is installed on the bottom plate, the buffer tank is installed on the bottom plate, the diaphragm booster is installed on the bottom plate, the cache module is installed on the mounting bracket, the hydrogen storage valve group module is installed on the mounting bracket, the filling module is installed through the stand on the bottom plate, the hydrogen filling gun is linked with the hydrogen storage valve group module, and the safety assembly is arranged on the bottom plate.

[0008] Among them, the safety assembly includes shell and protection door, the shell is hinged on the stand, and the protection door is installed on the stand.

[0009] Among them, the safety assembly further includes protection cover and protective fence, the protection cover is detachably installed on the mounting bracket, and the protective fence is fixedly installed on the mounting bracket.

[0010] The safety assembly further comprises a combustible gas detector and a fire smoke detector, the combustible gas detector is installed on the mounting frame, and the fire smoke detector is installed on the mounting frame.

[0011] The strong exhaust fan is installed on the mounting frame, and the electric control module is installed on the bottom plate.

[0012] The hydrogen supply device with the buffering function of the utility model, when using, hydrogen module hydrogen enters the buffer tank after hydrogen, through the buffer tank stabilizes the diaphragm booster inlet pressure, through the diaphragm booster hydrogen gas source pressurization enters the buffer module, when adding, hydrogen is added to the outside through the hydrogen storage valve group module, the filling module, through the buffer tank stabilizes the diaphragm booster inlet pressure, through the diaphragm booster hydrogen gas source pressurization enters the buffer module, thereby guaranteeing that hydrogen pressure is in a stable range, the existing device is found in use, although the device gas supply is stable, but hydrogen pressure is unstable in use, thereby affecting work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced.

[0014] Figure 1 It is the structure schematic diagram of the hydrogen supply device with the buffering function of the utility model.

[0015] Figure 2 It is the structure schematic diagram of the protection mechanism of the hydrogen supply device with the buffering function of the utility model.

[0016] Figure 3 It is the structure schematic diagram of the safety assembly of the hydrogen supply device with the buffering function of the utility model.

[0017] In the drawing: 101-bottom plate, 102-stand, 103-mounting frame, 104-hydrogen module, 105-buffer tank, 106-diaphragm booster, 107-hydrogen storage valve group module, 108-buffer module, 109-filling module, 110-hydrogen filling gun, 111-outer shell, 112-protection door, 113-protection cover, 114-protection fence, 115-combustible gas detector, 116-fire smoke detector, 117-strong exhaust fan, 118-electric control module. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0019] It should be noted that in the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0020] In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0021] At the same time, in the description of the utility model, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; for those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0022] Please refer to Figures 1-3 , Figure 1 is a structure diagram of the hydrogen supply device with buffering function of the utility model, Figure 2 is a structure diagram of the protection mechanism of the hydrogen supply device with buffering function of the utility model, Figure 3 is a structure diagram of the safety assembly of the hydrogen supply device with buffering function of the utility model.

[0023] The embodiment provides a hydrogen supply device with buffering function, which comprises a protection mechanism, the protection mechanism comprises a bottom plate 101, a stand column 102, a mounting frame 103, a hydrogen production module 104, a buffer tank 105, a diaphragm booster 106, a hydrogen storage valve group module 107, a buffer module 108, a filling module 109, a hydrogen filling gun 110 and a safety assembly, the safety assembly comprises a shell 111, a protection door 112, a protection cover 113, a protection fence 114, a combustible gas detector 115, a fire smoke detector 116, a strong exhaust fan 117 and an electric control module 118, the foregoing scheme solves the problem that the existing device is unstable in use, although the device is stable in use, but the hydrogen pressure is often unstable, thereby affecting the working efficiency.

[0024] In this embodiment, the diaphragm booster inlet pressure is stabilized by the buffer tank 105, and the hydrogen gas source is pressurized by the diaphragm booster 106 and then enters the buffer module 108, so as to ensure that the hydrogen pressure is in a stable range.

[0025] The column 102 is fixedly installed on the bottom plate 101, the mounting frame 103 is fixedly installed on the upper end surface of the column 102, the hydrogen production module 104 is installed on the bottom plate 101, the buffer tank 105 is installed on the bottom plate 101, the diaphragm booster 106 is installed on the bottom plate 101, the buffer module 108 is installed on the mounting frame 103, the hydrogen storage valve group module 107 is installed on the mounting frame 103, the filling module 109 is installed on the bottom plate 101 through a vertical plate, the hydrogen filling gun 110 is communicated with the hydrogen storage valve group module 107, the safety assembly is arranged on the bottom plate 101, the diaphragm booster 106 is a special structure volumetric compressor, the cylinder does not need to be lubricated, the sealing performance is very good, the compressed medium does not contact any lubricant, the hydrogen production module 104 is a methanol hydrogen production module 104, the hydrogen in the whole system is obtained by methanol hydrogen production, the hydrogen production pressure is 0.1MPa, after the buffer tank 105, the pressure is increased, the inlet pressure of the diaphragm booster 106 is 0.07-0.2MPa, and the final exhaust pressure is 45MPa. The high-pressure hydrogen after being pressurized is stored in the buffer module 108 through the control valve module and the hydrogen storage valve module 107, and the storage pressure is 45MPa. When external hydrogen filling is needed, the hydrogen is filled externally through the hydrogen storage valve module 107 and the filling module 109. The hydrogen supply device with a buffer function has a nitrogen system module composed of a busbar and two nitrogen cylinders, which provides the required driving gas for the valve of each device in the station during hydrogen storage and filling, and provides nitrogen purging when necessary. The hydrogen supply device with a buffer function has a cooling system module that provides cooling water for the pressurization system module, and respectively cools the hydrogen and oil at the outlet of the three-stage pressurization system to ensure that the hydrogen and oil temperature at the outlet of the compressor is within the required temperature range, and cools the hydrogen during filling. The pipeline system is composed of filters, ball valves, pressure gauges, etc. The hydrogen production module 104, the buffer tank 105, the diaphragm pressurizer 106, the hydrogen storage valve module 107, the buffer module 108, the filling module 109, and the hydrogen filling gun 110 are connected. The hydrogen supply device with a buffer function is provided with a safety valve. When the pressure in the pipeline exceeds the set value of the safety valve, the hydrogen will be discharged from the safety valve. At the same time, the hydrogen supply device with a buffer function has a manual pressure relief function. When in use, the hydrogen produced by the hydrogen production module 104 enters the buffer tank 105, which stabilizes the inlet pressure of the diaphragm pressurizer. The hydrogen gas source is pressurized by the diaphragm pressurizer 106 and enters the buffer module 108. When external filling is needed, the hydrogen is filled externally through the hydrogen storage valve module 107 and the filling module 109. The inlet pressure of the diaphragm pressurizer 106 is stabilized by the buffer tank 105. The hydrogen gas source is pressurized by the diaphragm pressurizer 106 and enters the buffer module 108, thereby ensuring that the hydrogen pressure is within a stable range. The problem of unstable hydrogen pressure during use of the existing device is solved, which affects the work efficiency.

[0026] Secondly, the shell 111 is hinged to the stand 102, and the protective door 112 is installed on the stand 102. The hydrogen production module 104, the buffer tank 105, the diaphragm pressurizer 106, the filling module 109, and the hydrogen filling gun 110 are protected by the shell 111 and the protective door 112 to avoid being hit by external objects.

[0027] Thirdly, the protective cover 113 is detachably installed on the mounting bracket 103, and the protective fence 114 is fixedly installed on the mounting bracket 103. The hydrogen storage valve module 107 and the buffer module 108 are protected by the protective cover 113 and the protective fence 114.

[0028] Meanwhile, the combustible gas detector 115 is installed on the mounting rack 103, the fire smoke detector 116 is installed on the mounting rack 103, the hydrogen concentration value in the pry is monitored in real time through the combustible gas detector 115 and the fire smoke detector 116, and an alarm is given according to the alarm value, the unpowered air ball can continuously ventilate the pry, and the electrical components and valves of the pry station meet the explosion-proof requirements.

[0029] In addition, the strong exhaust fan 117 is installed on the mounting rack 103, the electric control module 118 is installed on the bottom plate 101, the pry is ventilated through the strong exhaust fan 117 to reduce the hydrogen concentration value in the pry when necessary, and the electric control module 118 serves as the control center of the whole station, controls the start and stop of each device, controls each monitoring device, and displays and controls each fault alarm information.

[0030] The hydrogen supply device with a buffering function of the embodiment is used, the hydrogen is generated by the hydrogen generation module 104 and enters the buffer tank 105, the inlet pressure of the diaphragm booster 106 is stabilized through the buffer tank 105, the hydrogen gas source is pressurized through the diaphragm booster 106 and enters the buffer module 108, when external filling is required, the hydrogen is filled externally through the hydrogen storage valve group module 107 and the filling module 109, the inlet pressure of the diaphragm booster 106 is stabilized through the buffer tank 105, the hydrogen gas source is pressurized through the diaphragm booster 106 and enters the buffer module 108, so as to ensure that the hydrogen pressure is in a stable range, and solve the problem that the existing device is unstable in use, although the device can supply stable gas, but the hydrogen pressure is often unstable in use, thereby affecting the work efficiency.

[0031] The above only discloses one or more preferred embodiments of the application, and cannot limit the scope of the application, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the application still belong to the scope covered by the application.

Claims

1. A hydrogen supply device with buffering function, characterized in that, It comprises a protection mechanism; The protection mechanism comprises a bottom plate, a stand, a mounting frame, a hydrogen production module, a buffer tank, a diaphragm booster, a hydrogen storage valve group module, a buffer module, a filling module, a hydrogen filling gun and a safety assembly, the stand is fixedly installed on the bottom plate, the mounting frame is fixedly installed on the upper end face of the stand, the hydrogen production module is installed on the bottom plate, the buffer tank is installed on the bottom plate, the diaphragm booster is installed on the bottom plate, the buffer module is installed on the mounting frame, the hydrogen storage valve group module is installed on the mounting frame, the filling module is installed on the bottom plate through a vertical plate, the hydrogen filling gun is communicated with the hydrogen storage valve group module, and the safety assembly is arranged on the bottom plate.

2. The hydrogen supply device with buffering function according to claim 1, characterized in that, The safety assembly comprises a shell and a protection door, the shell is hinged on the stand, and the protection door is installed on the stand.

3. The hydrogen supply device with buffering function according to claim 2, characterized in that, The safety assembly further comprises a protective cover and a protective fence, the protective cover is detachably installed on the mounting frame, and the protective fence is fixedly installed on the mounting frame.

4. The hydrogen supply device with buffering function according to claim 3, characterized in that, The safety assembly further comprises a combustible gas detector and a fire smoke detector, the combustible gas detector is installed on the mounting frame, and the fire smoke detector is installed on the mounting frame.

5. The hydrogen supply device with buffering function according to claim 4, characterized in that, The safety assembly further comprises a strong exhaust fan and an electric control module, the strong exhaust fan is installed on the mounting frame, and the electric control module is installed on the bottom plate.

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