Overall anti-explosion skid-mounted hydrogen pressurization or decompression quantitative conveying system

Abstract

The invention discloses an integral anti-explosion skid-mounted hydrogen pressurization or decompression quantitative conveying system, and relates to the technical field of hydrogen transportation and storage. The integral anti-explosion skid-mounted hydrogen pressurization or decompression quantitative conveying system comprises an anti-explosion skid-mounted box and a hydrogen conveying system installed in the anti-explosion skid-mounted box, the hydrogen conveying system comprises a compressor, a hydrogen storage tank and a decompression energy storage mechanism, the compressor pressurizes and stores hydrogen into the hydrogen storage tank, and the hydrogen storage tank outputs hydrogen through decompression of the decompression energy storage mechanism. The pressure reduction and energy storage mechanism converts the pressure of released high-pressure hydrogen into gravitational potential energy to be stored, a balance weight piston is jacked up through high-pressure air, the gravitational potential energy of the balance weight piston is increased, then conversion and storage of the pressure of the hydrogen are achieved, and the lifted balance weight piston can slide downwards subsequently and pull a winding and energy releasing device to operate through a pull belt; gravitational potential energy can be converted into rotation kinetic energy to be output, and equipment can be driven to operate or a generator is driven to operate to generate electric power for storage.

Description

Technical Field

[0001] This invention relates to the field of hydrogen transportation and storage technology, specifically to an integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system. Background Technology

[0002] Hydrogen storage and release processes: Common storage methods include high-pressure gaseous hydrogen storage, which involves compressing hydrogen into a high-pressure container; liquid hydrogen storage, which involves liquefying hydrogen at low temperatures; and solid-state hydrogen storage, which utilizes materials such as metal hydrides to adsorb hydrogen. During release, high-pressure gaseous hydrogen storage releases hydrogen by depressurizing with a pressure-reducing valve; liquid hydrogen storage requires heating and vaporization before release; and solid-state hydrogen storage desorbs hydrogen from the storage material through heating or depressurization for later use.

[0003] Publication number CN117212686A discloses an automatic hydrogen storage and release system. This system includes a compressor, a temperature control pipeline, a solid hydrogen storage unit, and a hydrogen release main line connected in sequence. The temperature control pipeline includes a hydrogen storage main line and a hydrogen supply main line connected in parallel. The temperature control pipeline has a first operating state and a second operating state that can be switched between each other. In the first operating state, the pressurized hydrogen outlet of the compressor is connected to the inlet of the solid hydrogen storage unit through the hydrogen storage main line. In the second operating state, the pressurized hydrogen outlet of the compressor is connected to the inlet of the solid hydrogen storage unit through the hydrogen supply main line. The hydrogen outlet to be released from the solid hydrogen storage unit is connected to the inlet of the hydrogen release main line. The solid hydrogen storage unit includes multiple solid hydrogen storage tanks internally filled with solid hydrogen storage material. This system enables flexible hydrogen storage and release, achieves high hydrogen storage density, stable hydrogen supply pressure, and significantly reduces the footprint of hydrogen storage equipment.

[0004] As shown in the above technology, existing hydrogen storage and release systems generally compress and store hydrogen, and release it under reduced pressure when needed. The pressure reduction is usually done directly through a pressure reducing valve. However, the compressor does a lot of work during compression, and a large amount of potential energy is stored in the hydrogen. Direct release is wasteful. If this energy can be used rationally, it will help reduce the company's operating costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system, which solves the problems of the prior art mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system, comprising an explosion-proof skid-mounted enclosure and a hydrogen delivery system installed within it. The hydrogen delivery system includes a compressor, a hydrogen storage tank, and a depressurization energy storage mechanism. The compressor pressurizes and stores hydrogen in the hydrogen storage tank. The hydrogen storage tank depressurizes and outputs hydrogen through the depressurization energy storage mechanism, which converts the pressure of the released high-pressure hydrogen into gravitational potential energy for storage. The depressurization energy storage mechanism is divided into multiple groups arranged in parallel, including: The pressure-reducing energy storage tank uses high-pressure hydrogen gas to push a counterweight piston inside the tank to store gravitational potential energy. The top of the counterweight piston is connected to a tension band. A winding and releasing device, installed on one side of a depressurized energy storage tank, is used to connect the other end of a tension belt and perform winding. The winding and releasing device includes a wheel frame, with a hollow shaft rotatably connected inside the wheel frame. A winding wheel is fixedly connected to the surface of the hollow shaft and located inside the wheel frame. A spring box is fixedly connected to one side of the wheel frame, and the center end of the spring inside the spring box abuts against the hollow shaft. A prism shaft is rotatably connected inside the hollow shaft. The prism shaft passes through multiple sets of hollow shafts. A ratchet connecting assembly is sleeved on the surface of the prism shaft and is fixedly connected to one end of the hollow shaft. The ratchet connecting assembly allows the hollow shaft to rotate only in one direction relative to the prism shaft, so that each set of hollow shafts independently drives the prism shaft when releasing energy.

[0007] Preferably, the ratchet connection assembly includes: The main housing is coaxially and fixedly connected to one end of the hollow shaft; The round cover is fixedly connected to the main housing by bolts; The ratchet is rotatably connected inside the main housing, and the ratchet is sleeved on the outside of the prism shaft; One-way teeth, multiple of which are arranged around the periphery of the ratchet, and are rotatably connected to the main housing and the round cover; An elastic element is elastically connected between the one-way tooth and the main housing, and the elastic element is used to elastically press the one-way tooth onto the ratchet surface.

[0008] Preferably, a hanging shaft is horizontally installed through the top of the wheel frame, and a locking structure is rotatably sleeved on the hanging shaft. The locking structure is sleeved on the outside of the tension belt, and several metal rings are fixedly connected at equal intervals on the tension belt. The locking structure locks the tension belt by passing through the metal rings.

[0009] Preferably, the locking structure includes: A sleeve is fitted over the outside of the tension band, and a stepped stud is fixedly connected to one side of the sleeve; A pin, penetrating the sleeve and at least two pins are provided, the pins being used to penetrate the metal ring, and one end of the pin being fixedly connected to a permanent magnet; The cover is fixedly connected to the other side of the casing by bolts and covers the pin. An electromagnet corresponding to the position of the permanent magnet is fixedly connected to the inner wall of the cover. A fixed base is fastened to one side of the housing. The fixed base is sleeved on the outside of the stepped stud and locked by a nut. One end of the fixed base extends with a collar, which is used to sleeve on the outside of the lifting shaft.

[0010] Preferably, the pressure-reducing energy storage tank includes a tank body, with end caps fixedly connected to both the upper and lower ends of the tank body. The tank body is cylindrical, and a counterweight piston is slidably disposed inside the tank body. A lifting ring is fixedly connected to the top of the counterweight piston, and one end of a tension band is fixedly sleeved on the outside of the lifting ring. A pulley system is fixedly connected to the top of the end cap, and the tension band rests on the pulleys of the pulley system. A distance sensor for detecting the height of the counterweight piston is fixedly connected to the end cap. An air inlet and an air outlet are respectively opened at the bottom of both sides of the tank body. Multiple sets of air inlets of the tank body are connected in parallel through parallel input pipelines and electric three-way valves. One end of the parallel input pipeline is connected to the gas outlet valve of the hydrogen storage tank through an output pipeline, and the other end of the parallel input pipeline is sealed. Multiple sets of gas outlets of the tank body are connected in parallel through parallel output pipelines. One end of the parallel output pipeline is open and the other end is sealed. A second electric valve is connected in series on the parallel output pipeline, located near the opening end of each set of gas outlets.

[0011] Preferably, the pressure-reducing energy storage tank and the winding and releasing energy device are both fixedly connected to the explosion-proof skid-mounted box through the bottom plate, and the top of the bottom plate is also fixedly connected to a bracket to support the parallel output pipeline.

[0012] Preferably, a bracket is fixedly connected inside the explosion-proof skid-mounted enclosure and located outside the compressor, and a filter device and a cooling device are installed on the bracket. The inlet and outlet ends of the compressor are connected to the filter device and the cooling device through a suction pipe and an outlet pipe, respectively. The outlet end of the cooling device is connected to the inlet valve of the hydrogen storage tank through an input pipe. The hydrogen storage tank is provided with one or more sets of valves. The outlet valves and inlet valves of adjacent hydrogen storage tanks are connected through a transfer pipe, and a first electric valve is connected in series on the transfer pipe.

[0013] Preferably, the filtration device includes: A filter box, the top of which is fixedly connected to a box cover by bolts; The filter plates have multiple layers inside the filter box; An air intake hood is fixedly connected to the rear bottom of the filter box and located below the lowest filter plate. The air intake hood is used to connect to a hydrogen source. The exhaust pipe cover is fixedly connected to the top front side of the filter box and located above the uppermost filter plate, for connecting with the exhaust pipe.

[0014] Preferably, slots and grooves are respectively provided on the rear side of the filter box and at the positions corresponding to the uppermost and lowermost filter plates. Several studs are also fixedly connected to the rear side of the filter box. A sealing plate covering the slots and grooves is sleeved on the outside of the studs. A manual threaded sleeve is threaded to one end of the stud that passes through the sealing plate.

[0015] Preferably, the filter plate includes a frame and a filter screen fixedly connected inside it. The bottom of the frame is rotatably connected with a number of ball bearings, and the top of the frame extends upward to provide a raised edge to leave a buffer space between adjacent filter screens.

[0016] This invention provides an integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system. Compared with the prior art, it has the following advantages: 1. This integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system utilizes a compressor to compress hydrogen for storage. A large hydrogen storage tank allows the discharged hydrogen to be dispersed throughout the space, thus reducing pressure. High-pressure air lifts a counterweight piston, increasing its gravitational potential energy and converting it into stored hydrogen pressure. The raised counterweight piston can then slide down, using a tension belt to drive a winding energy release device, converting gravitational potential energy into rotational kinetic energy. This energy can power equipment or a generator to produce stored electricity. The depressurization energy storage mechanism is divided into multiple groups connected by a ratchet assembly, allowing each group to operate independently and release gravitational potential energy sequentially. Compared to releasing all gravitational potential energy at once, this extends the driving time and avoids mutual interference and wasted potential energy.

[0017] 2. This integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative conveying system features a locking structure on the winding and unwinding device. Utilizing magnetic push-pull pins, the tension belt can be quickly locked or unlocked. After the counterweight piston is lifted by hydrogen, it can be locked at virtually any position to prevent slippage. The locking is stable, secure, and releases quickly. Furthermore, as the diameter and angle of the tension belt change with the winding wheel's winding and unwinding, the locking structure adapts to the belt's angle, making it convenient to use.

[0018] 3. This integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system uses multiple smaller diameter tanks connected in parallel with multiple counterweight pistons to form a depressurization structure. The multiple tanks are opened sequentially, and hydrogen can sequentially push up multiple counterweight pistons. By dividing a large counterweight into multiple smaller counterweights, hydrogen at any pressure can push up a certain counterweight piston, avoiding the inability to push up a large counterweight piston when the gas pressure is low. The system uses a distance sensor to detect changes in the height of the counterweight piston in real time. Once the system detects that the counterweight piston has risen and stopped, the locking structure is activated to lock it, making it quite intelligent.

[0019] 4. This integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system filters the hydrogen before it is compressed by the compressor to ensure its cleanliness. It can also be used to filter and purify the nitrogen purging in the pipeline. The multi-layer filter plate stacking method allows for multiple filtrations to ensure filtration effect. The bottom-extraction and top-replenishment method allows the bottom and dirtiest filter plate to be periodically removed and the top clean filter plate to be replaced. The linearly extended air inlet and outlet pipe covers can disperse the airflow for uniform filtration. These multiple effects improve the utilization rate of the filter plates. Attached Figure Description

[0020] Figure 1 This is the assembly drawing of the present invention; Figure 2 The three-dimensional hydrogen delivery system of the present invention Figure 1 ; Figure 3 The three-dimensional hydrogen delivery system of the present invention Figure 2 ; Figure 4 This is a partial schematic diagram of the pressure-reducing energy storage mechanism of the present invention; Figure 5 This is a cross-sectional view of a partial structure of the pressure-reducing energy storage tank of the present invention; Figure 6 This is a schematic diagram showing the connection between the winding and releasing device of the present invention and the tension belt; Figure 7 This is an exploded view of the locking structure of the present invention; Figure 8 This is an exploded view of the ratchet connection assembly of the present invention; Figure 9 This is a schematic diagram of the filtration device of the present invention; Figure 10 This is an exploded view of the filtration device of the present invention; Figure 11 This is a bottom view of the filter plate of the present invention.

[0021] In the diagram: 100 - Explosion-proof skid-mounted container; 200 - Hydrogen delivery system; 1-Compressor, 2-Filter device, 21-Filter box, 22-Box cover, 23-Filter plate, 231-Frame, 232-Filter screen, 233-Elevated side, 234-Ball bearing, 24-Inlet pipe cover, 25-Outlet pipe cover, 26-Slot, 27-Draw groove, 28-Stud, 29-Sealing plate, 210-Manual screw sleeve; 3-Cooling device, 4-Hydrogen storage tank, 5-Pressure-reducing energy storage tank, 51-Tank body, 52-End cap, 53-Counterweight piston, 54-Lifting ring, 55-Pulley block, 56-Distance sensor; 6-Rewinding and unwinding device, 61-Wheel frame, 62-Rewinding wheel, 63-Hollow shaft, 64-Clocking barrel, 65-Hanging shaft, 66-Locking structure, 661-Box, 662-Pin, 663-Permanent magnet, 664-Cover, 665-Electromagnet, 666-Stepped stud, 667-Fixed base, 668-Ring, 67-Ratchet connection assembly, 671-Main housing, 672-Round cover, 673-Ratchet, 674-One-way tooth, 675-Elastic element, 68-Pyramidal shaft; 7-Tension band, 71-Metal ring, 8-Ejection pipe, 9-Outlet pipe, 10-Input pipe, 11-Transfer pipe, 12-First electric valve, 13-Output pipe, 14-Parallel input pipe, 15-Electric three-way valve, 16-Parallel output pipe, 17-Second electric valve, 18-Base plate, 19-Bracket, 20-Bracket. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] See Figures 1-11 This invention discloses an integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system, and provides the following four technical solutions: The first embodiment includes an explosion-proof skid-mounted container 100 and a hydrogen delivery system 200 installed inside it. The hydrogen delivery system 200 includes a compressor 1, a hydrogen storage tank 4, and a pressure-reducing energy storage mechanism. The compressor 1 pressurizes hydrogen and stores it in the hydrogen storage tank 4. The hydrogen storage tank 4 depressurizes and outputs hydrogen through the pressure-reducing energy storage mechanism, which converts the pressure of the released high-pressure hydrogen into gravitational potential energy for storage. The pressure-reducing energy storage mechanism is divided into multiple groups arranged in parallel, including: The pressure-reducing energy storage tank 5 uses the high-pressure hydrogen gas introduced to push the counterweight piston 53 inside the pressure-reducing energy storage tank 5 to store gravitational potential energy. The top of the counterweight piston 53 is connected to a tension belt 7. The winding and releasing device 6, installed on one side of the pressure-reducing energy storage tank 5, is used to connect the other end of the tension belt 7 and perform winding. The winding and releasing device 6 includes a wheel frame 61, with a hollow shaft 63 rotatably connected inside the wheel frame 61. A winding wheel 62 is fixedly connected to the surface of the hollow shaft 63 and located inside the wheel frame 61. A spring barrel 64 is fixedly connected to one side of the wheel frame 61, and the center end of the spring inside the spring barrel 64 abuts against the hollow shaft 63, so that when the hollow shaft 63 rotates forward, it will drive the spring to rotate and store energy. After reversing to fully release the force, it can continue to rotate. The hollow shaft 63 is rotatably connected to a prism shaft 68, which simultaneously passes through multiple hollow shafts 63. The edges of the prism shaft 68 can be rounded to reduce friction against the inner wall of the hollow shaft 63 during rotation. A ratchet connecting assembly 67 is fitted onto the surface of the prism shaft 68 and is fixedly connected to one end of the hollow shaft 63. The ratchet connecting assembly 67 allows the hollow shaft 63 to rotate only in one direction relative to the prism shaft 68, enabling each hollow shaft 63 to independently drive the prism shaft 68 when releasing energy. The ratchet connecting assembly 67 includes: The main housing 671 is coaxially and fixedly connected to one end of the hollow shaft 63; The round cover 672 is fixedly connected to the main housing 671 by bolts; Ratchet 673 is rotatably connected inside the main housing 671, and ratchet 673 is sleeved on the outside of the prism shaft 68; One-way teeth 674 are arranged in multiple ways around the ratchet 673 and are rotatably connected to the main housing 671 and the round cover 672; The elastic element 675 is a spring that is elastically connected between the one-way tooth 674 and the main housing 671. The elastic element 675 is used to elastically press the one-way tooth 674 onto the surface of the ratchet 673.

[0024] This device uses compressor 1 to compress hydrogen for storage, and the large hydrogen storage tank 4 allows the discharged hydrogen to be dispersed into a larger space, thereby reducing the pressure. High-pressure air is used to lift the counterweight piston 53, increasing its gravitational potential energy, thus converting and storing the hydrogen gas pressure. The raised counterweight piston 53 can then slide down and use the tension belt 7 to pull the winding energy release device 6, converting the gravitational potential energy into rotational kinetic energy output. This can drive the equipment or drive the generator to generate electricity for storage. The pressure-reducing energy storage mechanism is divided into multiple groups and connected by ratchet connection assembly 67, allowing multiple groups of pressure-reducing energy storage mechanisms to operate independently. This allows multiple groups of pressure-reducing energy storage mechanisms to release gravitational potential energy sequentially. Compared to releasing all gravitational potential energy at once, this extends the driving time and avoids mutual interference and waste of useless potential energy.

[0025] The second embodiment differs from the first embodiment in that: a hanging shaft 65 is horizontally installed through the top of the wheel frame 61, and a locking structure 66 is rotatably sleeved on the hanging shaft 65. The locking structure 66 is sleeved on the outside of the tension belt 7, and several metal rings 71 are fixedly connected at equal intervals on the tension belt 7. The locking structure 66 locks the tension belt 7 by passing through the metal rings 71.

[0026] Locking structure 66 includes: The sleeve 661 is fitted onto the outside of the tension band 7, and a stepped stud 666 is fixedly connected to one side of the sleeve 661. Pin 662, penetrating sleeve 661 and at least two of them are provided. Pin 662 is used to penetrate metal ring 71, and one end of pin 662 is fixedly connected to permanent magnet 663. The cover 664 is fixedly connected to the other side of the sleeve 661 by bolts and covers the pin 662. The inner wall of the cover 664 is fixedly connected to an electromagnet 665 corresponding to the position of the permanent magnet 663. The fixed base 667 is fastened to one side of the sleeve 661. The fixed base 667 is sleeved on the outside of the stepped stud 666 and locked by a nut. One end of the fixed base 667 extends with a collar 668, which is used to sleeve on the outside of the lifting shaft 65.

[0027] By setting a locking structure 66 on the winding and releasing device 6, the tension belt 7 can be quickly locked or unlocked by using magnetic push-pull pin 662. After using hydrogen to lift the counterweight piston 53, the counterweight piston 53 can be locked at basically any position to prevent it from sliding down. The locking is stable and firm and the release is fast. Furthermore, as the diameter of the tension belt 7 changes after the winding wheel 62 winds up and releases, the angle of the tension belt 7 changes, and the locking structure 66 can change with the angle of the tension belt 7, making it convenient to use.

[0028] The third embodiment differs from the first embodiment in that: the pressure-reducing energy storage tank 5 includes a tank body 51, with end caps 52 fixedly connected to both the upper and lower ends of the tank body 51. The tank body 51 is cylindrical, and a counterweight piston 53 is slidably disposed inside the tank body 51. A lifting ring 54 is fixedly connected to the top of the counterweight piston 53, and one end of a tension band 7 is fixedly sleeved on the outside of the lifting ring 54. A pulley assembly 55 is fixedly connected to the top of the end cap 52, and the tension band 7 rests on the pulleys of the pulley assembly 55. A distance sensor 56 for detecting the height of the counterweight piston 53 is fixedly connected to the end cap 52. The tank body 51 has end caps 52 on both sides of the end cap 51. The bottom of each tank has an inlet and an outlet. The inlets of multiple tanks 51 are connected in parallel via a parallel input pipe 14 and an electric three-way valve 15. One end of the parallel input pipe 14 is connected to the outlet valve of the hydrogen storage tank 4 via an outlet pipe 13. The outlet valve can be an electronic flow valve to control the amount of hydrogen discharged. The other end of the parallel input pipe 14 is sealed. The outlets of multiple tanks 51 are connected in parallel via a parallel output pipe 16. One end of the parallel output pipe 16 is open and the other end is sealed. A second electric valve 17 is connected in series on the parallel output pipe 16 and located near the opening of each outlet.

[0029] The pressure-reducing energy storage tank 5 and the winding and releasing energy device 6 are both fixedly connected to the explosion-proof skid box 100 through the bottom plate 18. The top of the bottom plate 18 is also fixedly connected to the bracket 20 that supports the parallel output pipeline 16.

[0030] A pressure-reducing structure is formed by connecting multiple smaller diameter tanks 51 with multiple counterweight pistons 53 in parallel. The tanks 51 are opened sequentially, and hydrogen gas can lift multiple counterweight pistons 53 in turn. By dividing a large counterweight into multiple smaller counterweights, hydrogen gas can lift a certain counterweight piston 53 regardless of its pressure. This avoids the situation where a large counterweight piston 53 cannot be lifted when the gas pressure is low. The distance sensor 56 is used to detect the height change of the counterweight piston 53 in real time. After the counterweight piston 53 is detected to rise and stop, the locking structure 66 is activated to lock it, which is quite intelligent.

[0031] The fourth embodiment differs from the first embodiment in that: a bracket 19 is fixedly connected inside the explosion-proof skid-mounted box 100 and outside the compressor 1, and a filter device 2 and a cooling device 3 are installed on the bracket 19. The inlet and outlet of the compressor 1 are connected to the filter device 2 and the cooling device 3 through the suction pipe 8 and the outlet pipe 9, respectively. The outlet of the cooling device 3 is connected to the inlet valve of the hydrogen storage tank 4 through the input pipe 10. The hydrogen storage tank 4 is provided with one or more sets of valves. The outlet valves and inlet valves of adjacent hydrogen storage tanks 4 are connected through the adapter pipe 11, and a first electric valve 12 is connected in series on the adapter pipe 11.

[0032] Filter device 2 includes: The top of the filter box 21 is fixedly connected to the box cover 22 by bolts; The filter plate 23 has multiple layers inside the filter box 21; The intake manifold 24 is fixedly connected to the rear bottom of the filter box 21 and located below the bottom filter plate 23. The intake manifold 24 is used to connect to the hydrogen source. The exhaust pipe cover 25 is fixedly connected to the top front side of the filter box 21 and is located above the uppermost filter plate 23, for connecting with the exhaust pipe 8.

[0033] Slots 26 and grooves 27 are provided on the rear side of the filter box 21, corresponding to the positions of the uppermost and lowermost filter plates 23, respectively. Several studs 28 are also fixedly connected to the rear side of the filter box 21. A sealing plate 29 is provided on the outside of the studs 28 to seal the slots 26 and grooves 27. A manual threaded sleeve 210 is threaded to one end of the stud 28 that passes through the sealing plate 29.

[0034] The filter plate 23 includes a frame 231 and a filter screen 232 fixedly connected inside it. Several balls 234 are rotatably connected to the bottom of the frame 231. By setting the balls 234 at the bottom, it is easy to pull out the bottom filter plate 23. The top of the frame 231 extends upward and is provided with a raised edge 233 to leave a buffer space between two adjacent filter screens 232.

[0035] Before the compressor 1 compresses the hydrogen, it filters the hydrogen to ensure its cleanliness. It can also be used to filter and purify the nitrogen purging the pipeline. The multi-layer filter plate 23 is stacked to perform multiple filtrations, ensuring the filtration effect. The bottom-extraction and top-replenishment method allows the bottom and dirtiest filter plate 23 to be periodically removed and a clean filter plate 23 to be replaced at the top. The linearly extended air inlet pipe cover 24 and air outlet pipe cover 25 can disperse the airflow for uniform filtration. These multiple effects improve the utilization rate of the filter plate 23.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] During initial hydrogen storage, the inlet pipe cover 24 is first connected to a nitrogen source to purge the entire system with nitrogen. Then, the nitrogen source is switched to a hydrogen source. After entering the filter device 2, the hydrogen passes through multiple filter plates 23 from bottom to top and is then compressed in the compressor 1. The compressed hydrogen is discharged through the outlet pipe 9 to the cooling device 3 for cooling and then discharged into the hydrogen storage tank 4 through the input pipe 10. When releasing hydrogen, the outlet valve of the hydrogen storage tank 4 and the required electric three-way valve 15 are opened to allow hydrogen to enter the pressure-reducing energy storage tank 5, which lifts the counterweight piston 53. When the counterweight piston 53 rises, the spring box 64 will rebound and drive the hollow shaft 63 to rotate, which in turn drives the winding wheel 62 to wind the tension belt 7. At the same time, the distance sensor 56 detects the height of the counterweight piston 53 and transmits it to the control system for analysis. When it is determined that the counterweight piston 53 has reached its maximum height, the locking structure 66 corresponding to the hydrogen storage tank 4 is controlled to activate the locking tension belt 7, and the electric three-way valve 15 corresponding to the next set of hydrogen storage tanks 4 is activated to allow hydrogen to enter the next set of hydrogen storage tanks 4 for energy storage and pressure reduction again. When all the counterweight pistons 53 do not rise, it means that the hydrogen no longer has enough thrust to push the counterweight pistons 53, so the second electric valve 17 is opened to release the hydrogen. When locking the tension band 7, a positive current is applied to the electromagnet 665 to generate a repulsive force that pushes the permanent magnet 663, thereby pushing the pin 662 toward the tension band 7. If the metal ring 71 passes through the pin 662, the pin 662 can be inserted into the metal ring 71 to lock it. When hydrogen is discharged, the locking structure 66 can be opened in sequence, and a reverse current can be passed to the electromagnet 665 to attract the permanent magnet 663. Then the pin 662 can be pulled out, and the tension band 7 will lose its lock. The counterweight piston 53 can then descend under its own weight, pulling the tension band 7 to drive the winding wheel 62 to rotate, which in turn drives the hollow shaft 63 to rotate. This shaft, through the spring box 64, drives the prism shaft 68 to rotate, which in turn drives the external generator to operate and generate electricity for energy storage.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system, comprising an explosion-proof skid-mounted enclosure and a hydrogen delivery system installed within it, characterized in that: The hydrogen delivery system includes a compressor, a hydrogen storage tank, and a pressure-reducing energy storage mechanism. The compressor pressurizes hydrogen and stores it in the hydrogen storage tank. The hydrogen storage tank depressurizes the hydrogen through the pressure-reducing energy storage mechanism, which converts the pressure of the released high-pressure hydrogen into gravitational potential energy for storage. The pressure-reducing energy storage mechanism consists of multiple groups arranged in parallel, including: The pressure-reducing energy storage tank uses high-pressure hydrogen gas to push a counterweight piston inside the tank to store gravitational potential energy. The top of the counterweight piston is connected to a tension band. A winding and releasing device, installed on one side of a depressurized energy storage tank, is used to connect the other end of a tension belt and perform winding. The winding and releasing device includes a wheel frame, with a hollow shaft rotatably connected inside the wheel frame. A winding wheel is fixedly connected to the surface of the hollow shaft and located inside the wheel frame. A spring box is fixedly connected to one side of the wheel frame, and the center end of the spring inside the spring box abuts against the hollow shaft. A prism shaft is rotatably connected inside the hollow shaft. The prism shaft passes through multiple sets of hollow shafts. A ratchet connecting assembly is sleeved on the surface of the prism shaft and is fixedly connected to one end of the hollow shaft. The ratchet connecting assembly allows the hollow shaft to rotate only in one direction relative to the prism shaft, so that each set of hollow shafts independently drives the prism shaft when releasing energy.

2. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 1, characterized in that: The ratchet connection assembly includes: The main housing is coaxially and fixedly connected to one end of the hollow shaft; The round cover is fixedly connected to the main housing by bolts; The ratchet is rotatably connected inside the main housing, and the ratchet is sleeved on the outside of the prism shaft; One-way teeth, multiple of which are arranged around the periphery of the ratchet, and are rotatably connected to the main housing and the round cover; An elastic element is elastically connected between the one-way tooth and the main housing, and the elastic element is used to elastically press the one-way tooth onto the ratchet surface.

3. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 1, characterized in that: A hanging shaft is horizontally installed through the top of the wheel frame. A locking structure is rotatably sleeved on the hanging shaft. The locking structure is sleeved on the outside of the tension belt. Several metal rings are fixedly connected at equal intervals on the tension belt. The locking structure locks the tension belt by passing through the metal rings.

4. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 3, characterized in that: The locking structure includes: A sleeve is fitted over the outside of the tension band, and a stepped stud is fixedly connected to one side of the sleeve; A pin, penetrating the sleeve and at least two pins are provided, the pins being used to penetrate the metal ring, and one end of the pin being fixedly connected to a permanent magnet; The cover is fixedly connected to the other side of the casing by bolts and covers the pin. An electromagnet corresponding to the position of the permanent magnet is fixedly connected to the inner wall of the cover. A fixed base is fastened to one side of the housing. The fixed base is sleeved on the outside of the stepped stud and locked by a nut. One end of the fixed base extends with a collar, which is used to sleeve on the outside of the lifting shaft.

5. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 1, characterized in that: The pressure-reducing energy storage tank includes a tank body, with end caps fixedly connected to both the upper and lower ends. The tank body is cylindrical, and a counterweight piston is slidably disposed inside the tank body. A lifting ring is fixedly connected to the top of the counterweight piston, and one end of a tension band is fixedly sleeved on the outside of the lifting ring. A pulley system is fixedly connected to the top of the end cap, and the tension band rests on the pulleys of the pulley system. A distance sensor for detecting the height of the counterweight piston is fixedly connected to the end cap. An air inlet and an air outlet are respectively opened at the bottom of both sides of the tank body. Multiple sets of air inlets of the tank body are connected in parallel through parallel input pipelines and electric three-way valves. One end of the parallel input pipeline is connected to the hydrogen storage tank outlet valve through an output pipeline, and the other end of the parallel input pipeline is sealed. Multiple sets of air outlets of the tank body are connected in parallel through parallel output pipelines. One end of the parallel output pipeline is open and the other end is sealed. A second electric valve is connected in series on the parallel output pipeline, located near the opening end of each set of air outlets.

6. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 5, characterized in that: The pressure-reducing energy storage tank and the winding and releasing energy device are both fixedly connected to the explosion-proof skid-mounted box through the bottom plate. The top of the bottom plate is also fixedly connected to a bracket that supports the parallel output pipeline.

7. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 1, characterized in that: The explosion-proof skid-mounted enclosure is fixedly connected to a bracket located outside the compressor. A filter and a cooling device are installed on the bracket. The compressor's inlet and outlet are connected to the filter and cooling device via a suction pipe and an outlet pipe, respectively. The outlet of the cooling device is connected to the inlet valve of the hydrogen storage tank via an input pipe. The hydrogen storage tank is provided with one or more sets of valves. The outlet and inlet valves of adjacent hydrogen storage tanks are connected via a transfer pipe, and a first electric valve is connected in series on the transfer pipe.

8. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 7, characterized in that: The filtration device includes: A filter box, the top of which is fixedly connected to a box cover by bolts; The filter plates have multiple layers inside the filter box; An air intake hood is fixedly connected to the rear bottom of the filter box and located below the lowest filter plate. The air intake hood is used to connect to a hydrogen source. The exhaust pipe cover is fixedly connected to the top front side of the filter box and located above the uppermost filter plate, for connecting with the exhaust pipe.

9. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 8, characterized in that: The filter box has slots and grooves on its rear side, corresponding to the positions of the top and bottom filter plates, respectively. Several studs are also fixedly connected to the rear side of the filter box. A sealing plate covering the slots and grooves is fitted around the studs. A manual threaded sleeve is threaded to one end of the stud that passes through the sealing plate.

10. The integrated explosion-proof skid-mounted hydrogen pressurization or depressurization quantitative delivery system according to claim 8, characterized in that: The filter plate includes a frame and a filter screen fixedly connected inside it. Several ball bearings are rotatably connected to the bottom of the frame, and a raised edge is provided on the top of the frame to leave a buffer space between adjacent filter screens.

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