Safety pressure relief structure for hydrogen production equipment

Abstract

The utility model discloses a safety pressure relief structure for hydrogen production equipment, and belongs to the technical field of hydrogen production pressure relief, the safety pressure relief structure for the hydrogen production equipment comprises a hydrogen gas storage assembly, and the safety pressure relief structure for the hydrogen production equipment is characterized in that a connecting hard pipe and an adjusting sleeve are matched with each other, and the hydrogen gas can be stored in the adjusting sleeve by adjusting an exposed hole of the adjusting sleeve; according to the actual operation conditions of the hydrogen production equipment, such as different reaction stages and different hydrogen yield requirements, the pressure in the equipment can be accurately controlled, for example, in the starting stage of the hydrogen production equipment, the hydrogen production speed is gradually increased, and at the moment, the pressure relief amount can be properly reduced; the pressure in the equipment can be stably increased to a normal working pressure range when the equipment is in full-load operation and a large amount of hydrogen is generated, the pressure relief is correspondingly increased to maintain the stable working pressure, and through the flexible adjustment, the adverse effect on the hydrogen production reaction and the equipment due to too high or too low pressure is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production pressure relief, and more particularly to a safety pressure relief structure for hydrogen production equipment. Background Art

[0002] During the hydrogen production process, many chemical reactions produce hydrogen. Examples include the electrolysis of water or the reaction of certain chemicals, such as metals, with acids. If these reaction conditions, such as temperature and reactant concentration, are out of control, the reaction rate can accelerate dramatically, leading to a significant increase in the rate of hydrogen production and a rapid increase in pressure within the equipment. For example, in water electrolysis hydrogen production equipment, if the electrolysis current is too high, the water decomposes too quickly, producing more hydrogen than the equipment can handle, and the pressure increases.

[0003] However, during the operation of most existing hydrogen production equipment, pressure can fluctuate due to a variety of factors. If the pressure relief cannot be adjusted, when the internal pressure of the equipment increases, it can only be relieved through fixed-size pressure relief devices such as safety valves or bursting discs. In this case, the pressure relief rate is either too fast, causing a sudden drop in pressure within the equipment, affecting the normal progress of the hydrogen production reaction; or the pressure relief rate is too slow, and the pressure cannot be controlled within the safe range in time, thereby increasing the risk of overpressure damage to the equipment. The inability to adjust the pressure relief size means that precise pressure control cannot be performed when the pressure approaches the safety upper limit. In the event of some sudden pressure increases, there is no buffer mechanism to slowly reduce the pressure, which can easily cause the equipment pressure to fluctuate greatly in a short period of time, causing impact on the equipment's mechanical structure and internal reaction system.

[0004] Therefore, in order to solve the above problems, a safety pressure relief structure for hydrogen production equipment is proposed. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a safety pressure relief structure for hydrogen production equipment. By connecting the hard pipe and the adjusting sleeve, the pressure relief amount can be achieved by adjusting the hole exposed by the adjusting sleeve, which can be adjusted according to the actual operating conditions of the hydrogen production equipment, such as different reaction stages, different hydrogen production requirements, etc.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A safety pressure relief structure for hydrogen production equipment comprises a hydrogen gas storage assembly, wherein a pressure relief assembly is provided in the middle of the hydrogen gas storage assembly;

[0008] The pressure relief assembly includes a buffer tube, one end of the buffer tube is fixedly connected to a conical cover, one end of the conical cover is fixedly connected to a connecting tube, one end of the connecting tube is fixedly connected to a diversion bin, a middle part of the diversion bin is fixedly connected to a plurality of diversion hoses, an inner side wall of the buffer tube is fixedly connected to a protective gasket, a middle part of the buffer tube is fixedly connected to a connecting hard tube, a middle part of the connecting hard tube is slidably connected to an adjusting sleeve, a buffer spring is fixedly connected to the inside of the adjusting sleeve, and a sliding block is fixedly connected to one end of the buffer spring and located inside the adjusting sleeve.

[0009] Furthermore, one end of the buffer tube is fixedly connected to a servo motor, the output end of the servo motor is fixedly connected to a rotating shaft, the rotating shaft is rotatably connected to the middle part of the buffer tube, the middle part of the rotating shaft is fixedly connected to a pair of sealing gaskets, and the pair of sealing gaskets are respectively located on the inner and outer sides of the buffer tube.

[0010] Furthermore, a screw is fixedly connected to one end of the rotating shaft and located inside the buffer tube, a screw sleeve is installed in the middle of the screw, a fixing rod is fixedly connected to the middle of the screw sleeve, and one end of the fixing rod is fixedly connected to the middle of the adjusting sleeve.

[0011] Furthermore, an air intake hose is provided in the middle portion of the connecting hard pipe.

[0012] Furthermore, the hydrogen gas storage assembly includes a bottom plate, and a storage barrel is provided at the upper end of the bottom plate, and the interior of the storage barrel is interconnected with a plurality of diversion hoses.

[0013] Furthermore, the interiors of the buffer tube, the conical cover, the connecting pipe, the diversion chamber and the diversion hose are all interconnected.

[0014] Furthermore, a plurality of ventilation holes are provided in the middle of the adjusting sleeve.

[0015] In summary, the present invention has the following beneficial effects:

[0016] (1) This solution uses the interaction between the connecting hard pipe and the regulating sleeve to adjust the hole exposed by the regulating sleeve to achieve the size of the pressure relief. It can accurately control the pressure inside the equipment according to the actual operating conditions of the hydrogen production equipment, such as different reaction stages, different hydrogen production requirements, etc. For example, during the startup phase of the hydrogen production equipment, the hydrogen production rate gradually accelerates. At this time, the pressure relief size can be appropriately reduced so that the pressure inside the equipment can steadily rise to the normal operating pressure range. When the equipment is running at full load and the hydrogen production volume is large, the pressure relief size is correspondingly increased to maintain a stable working pressure. Through this flexible adjustment, the adverse effects of excessively high or low pressure on the hydrogen production reaction and equipment are avoided.

[0017] (2) This solution uses a diversion chamber and multiple diversion hoses to divert excess gas or liquid to other suitable places. Combined with the pressure relief adjustment, it can further optimize pressure control. For example, when it is detected that the pressure in the equipment has an upward trend, in addition to releasing part of the pressure by adjusting the pressure relief, part of the hydrogen or reaction materials can also be diverted to other storage containers or subsequent processing links. This can more accurately control the pressure in the equipment within a safe range and prevent sudden changes in pressure from causing damage to the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0019] Figure 2 Schematic diagram of the overall split structure in this embodiment;

[0020] Figure 3 2 is a schematic diagram of the cross-sectional structure of the buffer tube in this embodiment;

[0021] Figure 4 This is a schematic diagram of the overall disassembled structure of the pressure relief assembly in this embodiment;

[0022] Figure 5 In this embodiment Figure 4 A is an enlarged structural diagram.

[0023] In the figure: 1. Hydrogen gas storage assembly; 2. Pressure relief assembly; 101. Bottom plate; 102. Storage barrel; 201. Buffer tube; 202. Conical cover; 203. Connecting pipe; 204. Diverter compartment; 205. Diverter hose; 206. Protective gasket; 207. Connecting hard pipe; 208. Adjusting sleeve; 209. Buffer spring; 210. Sliding block; 211. Servo motor; 212. Rotating shaft; 213. Sealing gasket; 214. Screw; 215. Nut; 216. Fixing rod; 217. Inlet hose. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0026] Reference Figure 1 - Figure 5As shown, a safety pressure relief structure for hydrogen production equipment in a preferred embodiment of the present utility model includes a hydrogen gas storage component 1, and a pressure relief component 2 is provided in the middle of the hydrogen gas storage component 1;

[0027] The pressure relief assembly 2 includes a buffer tube 201, and the pressure relief assembly 2 includes a buffer tube 201, one end of which is fixedly connected to a conical cover 202, one end of which is fixedly connected to a connecting tube 203, one end of which is fixedly connected to a diversion chamber 204, a plurality of diversion hoses 205 are fixedly connected to the middle of the diversion chamber 204, a protective gasket 206 is fixedly connected to the inner wall of the buffer tube 201, a connecting hard tube 207 is fixedly connected to the middle of the connecting hard tube 207, an adjusting sleeve 208 is slidably connected to the middle of the connecting hard tube 207, a buffer spring 209 is fixedly connected to the inside of the adjusting sleeve 208, and a sliding block 210 is fixedly connected to one end of the buffer spring 209 and located inside the adjusting sleeve 208.

[0028] Reference Figure 3 - Figure 5 As shown, one end of the buffer tube 201 is fixedly connected to a servo motor 211, the output end of the servo motor 211 is fixedly connected to a rotating shaft 212, the rotating shaft 212 is rotatably connected to the middle part of the buffer tube 201, and a pair of sealing gaskets 213 are fixedly connected to the middle part of the rotating shaft 212, and the pair of sealing gaskets 213 are respectively located on the inner and outer sides of the buffer tube 201.

[0029] Reference Figure 3 - Figure 5 As shown, one end of the rotating shaft 212 is fixedly connected to a screw rod 214 located inside the buffer tube 201, a screw sleeve 215 is installed in the middle of the screw rod 214, and a fixing rod 216 is fixedly connected to the middle of the screw sleeve 215. One end of the fixing rod 216 is fixedly connected to the middle of the adjusting sleeve 208.

[0030] Reference Figure 1 - Figure 5 As shown, an air intake hose 217 is provided in the middle of the connecting hard tube 207 .

[0031] Reference Figure 1 - Figure 2 As shown, the hydrogen gas storage assembly 1 includes a bottom plate 101 , and a storage barrel 102 is provided at the upper end of the bottom plate 101 . The interior of the storage barrel 102 is interconnected with a plurality of diversion hoses 205 .

[0032] Reference Figure 3 - Figure 5 As shown, the interiors of the buffer tube 201 , the conical cover 202 , the connecting pipe 203 , the diversion chamber 204 and the diversion hose 205 are all interconnected.

[0033] Reference Figure 3As shown, a plurality of ventilation holes are opened in the middle of the adjustment sleeve 208.

[0034] Specific implementation process: The hydrogen gas storage component 1 includes a base plate 101 and a storage barrel 102 arranged at the upper end thereof for storing hydrogen. The structure of the pressure relief component 2 is relatively complex, wherein the buffer tube 201 is a key part, one end of which is connected to the conical cover 202, and the conical cover 202 is connected to the diversion chamber 204 through the connecting pipe 203. A plurality of diversion hoses 205 are fixedly connected to the middle of the diversion chamber 204, and these diversion hoses 205 are interconnected with the interior of the storage barrel 102 in the hydrogen gas storage component 1, which lays the foundation for subsequent diversion operations. A protective gasket 206 is fixed to the inner wall of the buffer tube 201, which can play a certain protective role for the internal components. A connecting hard pipe 207 is fixedly connected to the middle of the buffer tube 201, and the middle of the connecting hard pipe 207 The adjusting sleeve 208 is slidably connected to the adjusting sleeve 208, and a buffer spring 209 and a sliding block 210 are provided inside the adjusting sleeve 208. One end of the buffer spring 209 is fixedly connected to the inner wall of the adjusting sleeve 208, and the other end is fixedly connected to the sliding block 210. A plurality of ventilation holes are provided in the middle of the adjusting sleeve 208. In addition, a servo motor 211 is fixedly connected to one end of the buffer tube 201, and the output end of the servo motor 211 is connected to the rotating shaft 212. The rotating shaft 212 is rotatably connected to the middle of the buffer tube 201. A pair of sealing gaskets 213 are fixed to the middle of the rotating shaft 212, which are respectively located on the inner and outer sides of the buffer tube 201. A screw rod 214 is fixedly connected to one end of the rotating shaft 212 inside the buffer tube 201, and a screw sleeve 215 is installed on the screw rod 214. The middle part of the screw sleeve 215 is fixedly connected with a fixing rod 216, one end of the fixing rod 216 is fixedly connected with the middle part of the adjusting sleeve 208, and the middle part of the connecting hard pipe 207 is connected with an air intake hose 217 for introducing hydrogen and other gases that need to be decompressed. When the hydrogen production equipment is operating normally and the internal pressure is within the normal range, the gas enters the connecting hard pipe 207 through the air intake hose 217. Since the adjusting sleeve 208 is in the initial position at this time (the initial position can be reasonably set to ensure that the gas will not be decompressed in large quantities under normal pressure), the relative position of its air vent hole and the connecting hard pipe 207 ensures that the gas will not leak out from the air vent hole of the adjusting sleeve 208 in large quantities, but will be stored normally in the storage barrel 102 of the hydrogen gas storage assembly 1, and the entire system remains stable. When the internal pressure of the hydrogen production equipment increases and a pressure relief operation is required, the servo motor 211 is started, and the servo motor 211 drives the rotating shaft 212 to rotate, and the rotating shaft 212 drives the screw rod 214 to rotate. Since the screw rod 214 cooperates with the screw sleeve 215, the rotation of the screw rod 214 causes the screw sleeve 215 to move linearly along the screw rod 214 (the screw sleeve 215 is restricted by the fixed rod 216 and can only move linearly). The screw sleeve 215 drives the adjusting sleeve 208 to slide on the connecting hard pipe 207 through the fixed rod 216. When the adjusting sleeve 208 slides, the relative position of the vent hole opened therein and the connecting hard pipe 207 changes. If the adjusting sleeve 208 slides in a certain direction, the vent hole is exposed to more areas of gas flow inside the connecting hard pipe 207.Then the gas can enter the inside of the regulating sleeve 208 through these air holes, and then be discharged through the buffer tube 201, the conical cover 202, the connecting pipe 203 and other channels to achieve pressure relief operation. By controlling the rotation direction and rotation angle of the servo motor 211, the position of the sleeve 208 can be accurately adjusted, and then the amount of air holes exposed can be controlled to achieve precise adjustment of the pressure relief amount. For example, during the startup phase of the hydrogen production equipment, when the hydrogen production speed gradually accelerates but the overall pressure is still low, the servo motor 211 can be used to control the regulating sleeve 208 to expose less air holes, so that the pressure in the equipment can steadily rise to the normal working pressure range; and when the equipment is running at full load, the amount of hydrogen produced is large and the pressure rises rapidly, the servo motor 211 is adjusted accordingly to expose more air holes, increase the pressure relief size, and maintain a stable working pressure. When the gas enters the buffer tube 201 through the regulating sleeve 208, the buffer spring 209 and the sliding block 210 can act as a buffer to prevent sudden changes in gas pressure from impacting the entire pressure relief structure, making the pressure relief process smoother. At the same time, when it is detected that the pressure in the equipment is rising, in addition to releasing part of the pressure by adjusting the pressure relief size, the gas entering the connecting pipe 203 will also flow into the diversion chamber 204, and then a part of the hydrogen will be guided to the storage barrel 102 through multiple diversion hoses 205. In this way, the excess hydrogen can be diverted to other suitable storage places, further optimizing the pressure control, more accurately controlling the pressure in the equipment within a safe range, and preventing sudden changes in pressure from causing damage to the equipment. In addition, through the diversion operation, the diverted hydrogen can be reasonably utilized according to actual needs in the future, avoiding the waste of hydrogen.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A safety pressure relief structure for hydrogen production equipment, comprising a hydrogen gas storage assembly (1), characterized in that: A pressure relief assembly (2) is provided in the middle of the hydrogen gas storage assembly (1); The pressure relief assembly (2) comprises a buffer tube (201), wherein one end of the buffer tube (201) is fixedly connected to a conical cover (202), one end of the conical cover (202) is fixedly connected to a connecting tube (203), one end of the connecting tube (203) is fixedly connected to a diversion chamber (204), a middle portion of the diversion chamber (204) is fixedly connected to a plurality of diversion hoses (205), an inner side wall of the buffer tube (201) is fixedly connected to a protective gasket (206), a middle portion of the buffer tube (201) is fixedly connected to a connecting hard tube (207), a middle portion of the connecting hard tube (207) is slidably connected to an adjusting sleeve (208), a buffer spring (209) is fixedly connected to the interior of the adjusting sleeve (208), and a sliding block (210) is fixedly connected to one end of the buffer spring (209) and located inside the adjusting sleeve (208).

2. A safety pressure relief structure for hydrogen production equipment according to claim 1, characterized in that: One end of the buffer tube (201) is fixedly connected to a servo motor (211), an output end of the servo motor (211) is fixedly connected to a rotating shaft (212), the rotating shaft (212) is rotatably connected to the middle of the buffer tube (201), and a pair of sealing gaskets (213) are fixedly connected to the middle of the rotating shaft (212), and the pair of sealing gaskets (213) are respectively located on the inner and outer sides of the buffer tube (201).

3. A safety pressure relief structure for hydrogen production equipment according to claim 2, characterized in that: One end of the rotating shaft (212) is fixedly connected to a screw rod (214) located inside the buffer tube (201), a screw sleeve (215) is installed in the middle of the screw rod (214), a fixing rod (216) is fixedly connected in the middle of the screw sleeve (215), and one end of the fixing rod (216) is fixedly connected to the middle of the adjustment sleeve (208).

4. The safety pressure relief structure for hydrogen production equipment according to claim 1, characterized in that: An air intake hose (217) is provided in the middle of the connecting hard pipe (207).

5. The safety pressure relief structure for hydrogen production equipment according to claim 1, characterized in that: The hydrogen gas storage assembly (1) comprises a base plate (101), the upper end of the base plate (101) is provided with a storage barrel (102), and the interior of the storage barrel (102) is interconnected with a plurality of diversion hoses (205).

6. The safety pressure relief structure for hydrogen production equipment according to claim 1, characterized in that: The interiors of the buffer tube (201), the conical cover (202), the connecting tube (203), the diversion chamber (204), and the diversion hose (205) are all interconnected.

7. The safety pressure relief structure for hydrogen production equipment according to claim 1, characterized in that: A plurality of ventilation holes are provided in the middle of the adjusting sleeve (208).

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