A high-pressure hydrogen pressure reducing valve and its use method

Abstract

The invention relates to the technical field of pressure reducing valves and discloses a high-pressure hydrogen pressure reducing valve and a method for using the same, comprising a valve pipe assembly, wherein the valve pipe assembly comprises a hydrogen filter assembly, both ends of the hydrogen filter assembly are fixedly connected to a valve housing, the top of the hydrogen filter assembly is fixedly connected to a gas valve assembly, one end of the hydrogen filter assembly is fixedly sleeved with an electric heating ring sleeve, the other end of the hydrogen filter assembly is rotatably connected to a fan wheel, the side of the fan wheel is rotatably sleeved with a cutting magnetic element, the bottom of the fan wheel is fixedly connected to a runner, and one end of the inner bottom of the valve housing is fixedly connected to a magnetic cylinder, thereby solving the problem that metal impurity particles in the pressure reducing valve pipeline impact the valve core and valve seat with the high-speed hydrogen flow, resulting in groove-shaped erosion marks on the valve seat sealing surface, and the metal impurity particles attached to the magnetic cylinder can be recycled, thereby avoiding the waste of resources and the problem of frosting on the valve body outlet surface when the high-pressure hydrogen is throttled and expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure reducing valves, and more particularly to a high-pressure hydrogen pressure reducing valve and a method of using the same. Background Art

[0002] High-pressure hydrogen pressure reducing valves are key devices used to reduce high-pressure hydrogen to a stable, safe low pressure. They are widely used in hydrogen fuel cell vehicles. The pressure of high-pressure hydrogen is typically 10 MPa to 70 MPa. The pressure reducing valve reduces the pressure of hydrogen in the hydrogen storage tank to a pressure suitable for the fuel cell stack (e.g., 0.5-3 MPa), ensuring reaction efficiency and safety. In hydrogen filling station applications, the valve reduces the pressure of hydrogen in the high-pressure hydrogen storage cylinder group to the pressure required by the filling gun, allowing for safe hydrogen filling of hydrogen vehicles.

[0003] In the actual use of high-pressure hydrogen pressure reducing valves, the Joule-Thomson effect occurs when high-pressure hydrogen expands through throttling, causing a sharp drop in temperature and a sudden drop in valve outlet flow or complete blockage, leading to frost on the valve body outlet surface. In addition, metal impurity particles (weld oxide scale, iron particles) in the pressure reducing valve pipeline impact the valve core and valve seat with the high-speed hydrogen flow (>20m / s), resulting in groove-like erosion marks on the valve seat sealing surface, thereby reducing the flow control accuracy. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-pressure hydrogen pressure reducing valve and a method of using the same to solve the problems existing in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a high-pressure hydrogen pressure reducing valve and a method for using the same, comprising a valve pipe assembly, wherein the valve pipe assembly includes a hydrogen filter assembly, both ends of the hydrogen filter assembly are fixedly connected to a valve housing, the top of the hydrogen filter assembly is fixedly connected to a gas valve assembly, one end of the hydrogen filter assembly is fixedly sleeved with an electric heating ring sleeve, and the other end of the hydrogen filter assembly is rotatably connected to a fan wheel;

[0006] The side of the fan wheel is rotatably sleeved with a magnetic cutting element, the bottom of the fan wheel is fixedly connected to a runner, and one end of the inner side of the bottom of the valve housing is fixedly connected to a magnetic cylinder;

[0007] The hydrogen filter assembly and the rotor cooperate to remove metal impurity particles in the hydrogen. The hydrogen filter assembly and the magnetic cylinder work together to recover metal impurity particles. The fan wheel, the magnetic cutting element and the magnetic cylinder work together to enable the electric heating ring to suppress frost on the valve body outlet surface.

[0008] Furthermore, the inner side of the valve assembly is fixedly connected to a valve pipe assembly, the bottom of the valve pipe assembly is installed with a heating assembly, and the heating assembly is fixedly connected to the inner side of the bottom of the valve assembly.

[0009] Furthermore, the valve assembly includes a valve housing, one side of the valve housing is fixedly connected to an air inlet pipe, the other side of the valve housing is fixedly connected to an air outlet pipe, the top of the valve housing is fixedly connected to a pressure regulating assembly, and the backs of the air inlet pipe and the air outlet pipe are fixedly connected to a pressure gauge.

[0010] Furthermore, the pressure regulating assembly includes a sealing cover, the top of the inner side of the sealing cover is threadedly connected to an adjusting shaft, one end of the adjusting shaft is fixedly connected to a handle, the surface of the middle portion of the adjusting shaft is fixedly connected to a gear ring, the bottom of the gear ring is installed with a rotating disk, the rotating disk is meshed with the gear ring, the back of the rotating disk is rotatably connected to a rotating rod, and the rotating rod is fixedly connected to the inner wall of the sealing cover;

[0011] The edge position of the front side of the turntable is rotatably connected to a transmission part, one end of the transmission part is rotatably sleeved on a moving rod, one end of the transmission part is rotatably connected to the front side of the turntable and the other end is rotatably sleeved on the top of the moving rod, the bottom end of the moving rod is fixedly connected to a valve core, and the side of the moving rod is movably sleeved with a sleeve, both sides of the sleeve are fixedly connected to connecting plates, and one end of the two connecting plates is fixedly connected to the inner wall of the sealing cover.

[0012] Furthermore, the fan wheel is composed of an impeller and a roller, the bottom of the impeller is fixedly connected to the roller, the impeller is located inside the hydrogen filter assembly, the roller passes through the inner wall of the hydrogen filter assembly and is rotatably connected to the inner wall, and a semicircular block is fixedly connected to the connection between the hydrogen filter assembly and the inner wall of the valve housing.

[0013] Furthermore, the hydrogen filtering assembly includes an airflow tube, a circular opening is provided at the top of the airflow tube, a square opening is provided at the bottom of the airflow tube, an arc-shaped groove is provided on one side of the square opening, a sealing arc plate is movably connected to one end of the arc groove, a fixed block is fixedly connected to the top of one end of the sealing arc plate, a filter is fixedly connected to the top of the fixed block, the filter is movably connected to the inner side of the airflow tube and the diameter of the filter is the same as the diameter of the airflow tube.

[0014] Furthermore, circular grooves are provided at both ends of the other side of the square opening, springs are fixedly connected to the inner sides of the two circular grooves, and one end of the two springs is fixedly connected to one side of the sealing arc plate.

[0015] Furthermore, the air valve assembly includes a valve seat, the top of the valve seat is movably connected to a valve core, the valve core is composed of an upper cylindrical block and a lower cylindrical block, the bottom of the upper cylindrical block is fixedly connected to the lower cylindrical block, the diameter of the lower cylindrical block is the same as the diameter of the circular opening at the top of the airflow tube, the diameter of the upper cylindrical block is 3-5mm larger than the diameter of the lower cylindrical block, and the length of the lower cylindrical block is the same as the diameter of the airflow tube.

[0016] Furthermore, the heating component includes a magnetic cutting element, and the magnetic cutting element and the rotor are both inside the magnetic cylinder. The magnetic cutting element is composed of two conductor rings and two conductor frames. The two conductor rings are rotatably sleeved on the roller, and both sides of the two conductor rings are electrically connected to the conductor frame. A brush is installed on the top of one side of the conductor ring, and the brush is fixedly connected to the bottom of the airflow tube. The brush is movably electrically connected to the conductor ring located at the top of the magnetic cutting element, and one side of the brush is electrically connected to a wire, and one end of the wire is electrically connected to the electric heating ring sleeve.

[0017] A method for using a high-pressure hydrogen pressure reducing valve, using the above-mentioned high-pressure hydrogen pressure reducing valve, comprises the following steps:

[0018] S1. Turning the handle drives the adjusting shaft to rotate. The adjusting shaft is fixed by a thread. When the adjusting shaft is turned, the dial also rotates in a meshing relationship. The rotation of the dial causes one end of the transmission member to make an arc motion, which moves the other end of the transmission member downward, thereby causing the moving rod to move downward. The sleeve movably sleeved on the side of the moving rod acts as a guide rail to ensure that the moving rod moves up and down without deviation under the action of the transmission member force. When the handle is rotated in the opposite direction, one end of the transmission member makes a reverse arc motion, and the other end of the transmission member moves upward, thereby causing the moving rod to move upward;

[0019] S2. When the handle is turned, the movable rod moves downward, which in turn moves the valve core downward, causing the lower cylindrical block to gradually fall into the airflow tube, thereby gradually reducing the orifice area of ​​the airflow tube. When hydrogen passes through, the flow cross-sectional area suddenly decreases, the flow rate increases, and the pressure decreases (Bernoulli principle). The orifice area of ​​the airflow tube gradually decreases, and the pressure gradually decreases, thereby achieving the effect of regulating and reducing pressure.

[0020] S3. In the original state, under the action of spring tension, the sealing arc plate seals the square opening. When high-pressure hydrogen flows in the airflow pipe, the filter filters the metal impurity particles in the high-pressure hydrogen and adheres to one side of the filter. After hydrogen circulates in the airflow pipe for a long time, the metal impurity particles begin to accumulate. When the metal impurity particles block the filter holes of the filter, the hydrogen cannot pass through the filter. Under the push of the high-pressure hydrogen, the filter begins to move, causing the sealing arc plate to move into the arc groove, forming a gap between the sealing arc plate and the square opening. The high-pressure hydrogen then flows out of the gap, making the propagation path of the high-pressure hydrogen vertically downward. The changed direction of the high-pressure hydrogen blows away the metal impurity particles attached to the filter and carries them out of the airflow pipe through the square opening.

[0021] S4. When high-pressure hydrogen flows through the airflow pipe, the high-pressure hydrogen drives the fan wheel to rotate, which in turn drives the rotor to rotate to generate wind force. The wind force attracts the metal impurity particles discharged from the airflow pipe into the magnetic cylinder, and the metal impurity particles are attracted to the inner wall of the magnetic cylinder by the magnetic force of the magnetic cylinder.

[0022] S5. The fan wheel rotates, driving the magnetic cutting element to rotate, so that the magnetic cutting element cuts the magnetic field lines formed by the magnetic cylinder, thereby generating current, which is transferred to the electric heating ring through the wire and brush, so that the electric heating ring heats the outlet of the air flow pipe.

[0023] Technical effects and advantages of the present invention:

[0024] A filter is used to intercept metal impurity particles in the hydrogen. When the metal impurity particles accumulate in the filter and form a blockage, the hydrogen cannot pass through the filter mesh, which in turn pushes the filter to move, forming an opening between the sealing arc plate and the airflow tube, allowing hydrogen to flow out from the opening and blow the metal impurity particles attached to the filter away from the exhaust airflow tube. The fan wheel rotates at high speed under the blowing of high-pressure hydrogen, driving the rotor to rotate to form wind force. The wind force absorbs the metal impurity particles in the exhaust airflow tube into the magnetic cylinder, and the magnetic force of the magnetic cylinder absorbs the metal impurity particles to the inner wall. The metal impurity particles adhere to the inner wall of the magnetic cylinder, which solves the problem that the metal impurity particles in the pressure reducing valve pipeline impact the valve core and valve seat with the high-speed hydrogen flow, resulting in groove-shaped erosion marks on the valve seat sealing surface. The metal impurity particles attached to the magnetic cylinder can be recycled, avoiding waste of resources.

[0025] The fan wheel rotates at high speed under the blowing of high-pressure hydrogen, driving the magnetic cutting component to rotate, so that the magnetic cutting component cuts the magnetic field lines formed by the magnetic cylinder, thereby generating current, which is transmitted to the electric heating ring through the wire and brush, so that the electric heating ring heats the outlet of the air flow pipe, avoiding the problem of frost on the valve body outlet surface due to the Joule-Thomson effect when the high-pressure hydrogen expands through throttling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall appearance structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0028] Figure 3 This is a schematic structural diagram of the valve assembly of the present invention;

[0029] Figure 4 This is a schematic structural diagram of the voltage regulating assembly of the present invention;

[0030] Figure 5 Schematic diagram of the valve tube assembly structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the side structure of the valve tube assembly of the present invention;

[0032] Figure 7 This is a schematic structural diagram of the hydrogen filter assembly of the present invention;

[0033] Figure 8This is a schematic side cross-sectional view of the left portion of the hydrogen filter assembly of the present invention;

[0034] Figure 9 This is a schematic side cross-sectional view of the right portion of the hydrogen filter assembly of the present invention;

[0035] Figure 10 Schematic diagram of the structure of the gas valve assembly of the present invention;

[0036] Figure 11 It is a schematic structural diagram of the heating component of the present invention.

[0037] The accompanying drawings are marked as follows: 1. Valve assembly; 101. Valve housing; 102. Air inlet pipe; 103. Air outlet pipe; 104. Pressure regulating assembly; 1041. Sealing cover; 1042. Adjusting shaft; 1043. Turntable; 1044. Transmission member; 1045. Moving rod; 2. Valve pipe assembly; 201. Hydrogen filter assembly; 2011. Air flow pipe; 2012. Filter screen; 2013. Fixed block; 2014. Sealing arc plate; 202. Air valve assembly; 2021. Valve seat; 2022. Valve core; 203. Electric heating ring sleeve; 204. Fan wheel; 3. Heating assembly; 301. Cutting magnetic element; 302. Rotor; 303. Magnetic cylinder; 304. Brush. DETAILED DESCRIPTION

[0038] The technical solutions of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The high-pressure hydrogen pressure reducing valve and the method of use thereof involved in the present invention are not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] Reference Figure 1 and Figure 2 The present invention provides a high-pressure hydrogen pressure reducing valve and a method for using the same, comprising a valve assembly 1, wherein the inner side of the valve assembly 1 is fixedly connected to a valve pipe assembly 2, a heating assembly 3 is installed at the bottom of the valve pipe assembly 2, and the heating assembly 3 is fixedly connected to the inner side of the bottom of the valve assembly 1.

[0040] What needs to be specifically explained in this embodiment is that the valve pipe assembly 2 solves the problem that metal impurity particles in the pressure reducing valve pipeline impact the valve core and valve seat with the high-speed hydrogen flow, resulting in groove-shaped erosion marks on the valve seat sealing surface. The heating assembly 3 avoids the problem of frosting on the valve body outlet surface due to the Joule-Thomson effect when high-pressure hydrogen expands through throttling. The specific structure and working principle of the above components will be described in detail later.

[0041] Reference Figure 1 and Figure 3 The valve assembly 1 includes a valve housing 101, one side of the valve housing 101 is fixedly connected to an air inlet pipe 102, the other side of the valve housing 101 is fixedly connected to an air outlet pipe 103, the top of the valve housing 101 is fixedly connected to a pressure regulating assembly 104, and the backs of the air inlet pipe 102 and the air outlet pipe 103 are fixedly connected to a pressure gauge.

[0042] It should be specifically explained in this embodiment that the air inlet pipe 102 is connected to the high-pressure hydrogen pipeline, and the air outlet pipe 103 discharges the decompressed hydrogen. The pressure gauge on the back of the air inlet pipe 102 is used to observe the hydrogen pressure before decompression, and the pressure gauge on the back of the air outlet pipe 103 is used to observe the hydrogen pressure after decompression. The purpose is to form a comparison before and after decompression and to adjust the outlet pressure according to intuitive data.

[0043] Reference Figure 4 The pressure regulating assembly 104 includes a sealing cover 1041, the top of the inner side of the sealing cover 1041 is threadedly connected to an adjusting shaft 1042, one end of the adjusting shaft 1042 is fixedly connected to a handle, the surface of the middle part of the adjusting shaft 1042 is fixedly connected to a gear ring, a turntable 1043 is installed at the bottom of the gear ring, the turntable 1043 is meshed with the gear ring, the back of the turntable 1043 is rotatably connected to a rotating rod, the rotating rod is fixedly connected to the inner wall of the sealing cover 1041, and the front of the turntable 1043 is fixedly connected to the inner wall of the sealing cover 1041. A transmission member 1044 is rotatably connected to the edge position, and one end of the transmission member 1044 is rotatably sleeved on a moving rod 1045. One end of the transmission member 1044 is rotatably connected to the front of the turntable 1043 and the other end is rotatably sleeved on the top of the moving rod 1045. The bottom end of the moving rod 1045 is fixedly connected to the valve core 2022, and the side of the moving rod 1045 is movably sleeved with a sleeve. Both sides of the sleeve are fixedly connected to connecting plates, and one end of the two connecting plates is fixedly connected to the inner wall of the sealing cover 1041.

[0044] It should be specifically explained that in this embodiment, the transmission member 1044 is composed of a round rod and a long strip, the top ends of the two round rods are fixedly connected by a long strip, and the bottom ends of the two round rods are fixedly connected by another long strip;

[0045] The handle is rotated to drive the adjusting shaft 1042, and the adjusting shaft 1042 is fixed by a thread. After the adjusting shaft 1042 is rotated, the adjusting shaft 1042 rotates, and the turntable 1043 also rotates under the meshing relationship. The rotation of the turntable 1043 causes one end of the transmission member 1044 to make an arc motion, and the other end of the transmission member 1044 moves downward, thereby causing the moving rod 1045 to move downward. The sleeve that is movably sleeved on the side of the moving rod 1045 acts as a guide rail, ensuring that the moving rod 1045 moves up and down under the action of the force of the transmission member 1044 without deviation. When the handle is rotated in the opposite direction, one end of the transmission member 1044 makes a reverse arc motion, and the other end of the transmission member 1044 moves upward, thereby causing the moving rod 1045 to move upward.

[0046] Reference Figure 5 and Figure 6 The valve tube assembly 2 includes a hydrogen filter assembly 201, both ends of the hydrogen filter assembly 201 are fixedly connected to the valve housing 101, the top of the hydrogen filter assembly 201 is fixedly connected to the gas valve assembly 202, one end of the hydrogen filter assembly 201 is fixedly sleeved with an electric heating ring sleeve 203, and the other end of the hydrogen filter assembly 201 is rotatably connected to a fan wheel 204, the fan wheel 204 consists of an impeller and a roller, the bottom of the impeller is fixedly connected to the roller, the impeller is located inside the hydrogen filter assembly 201, the roller passes through the inner wall of the hydrogen filter assembly 201 and is rotatably connected to the inner wall, and a semicircular block is fixedly connected to the connection between the hydrogen filter assembly 201 and the inner wall of the valve housing 101.

[0047] It should be specifically explained in this embodiment that the semicircular block guides the hydrogen to flow toward the edge of the impeller 204, thereby improving the effect of the hydrogen blowing the impeller 204 to rotate.

[0048] Reference Figures 7 to 9 The hydrogen filter assembly 201 includes an airflow tube 2011, a circular opening is provided at the top of the airflow tube 2011, a square opening is provided at the bottom of the airflow tube 2011, an arc-shaped groove is provided on one side of the square opening, a sealing arc plate 2014 is movably connected to one end of the arc-shaped groove, a fixed block 2013 is fixedly connected to the top of one end of the sealing arc plate 2014, a filter screen 2012 is fixedly connected to the top of the fixed block 2013, the filter screen 2012 is movably connected to the inner side of the airflow tube 2011 and the diameter of the filter screen 2012 is the same as the diameter of the airflow tube 2011, circular grooves are provided at both ends of the other side of the square opening, springs are fixedly connected to the inner sides of the two circular grooves, and one end of the two springs is fixedly connected to one side of the sealing arc plate 2014;

[0049] The mesh size of the filter 2012 is 30-50um, preferably 45um. Common metal impurities in high-pressure hydrogen (such as hydrogen supplied by fuel cells, the pressure is usually 10-30MPa) are Fe, Ni, Cr and other particles produced by pipeline corrosion. The particle size is mostly concentrated in the range of 50-80um, and some wear particles can reach more than 100um. The filter 2012 adopts 316L stainless steel sintered mesh. The tensile strength of the filter with a pore size of 45um is ≥200MPa, which can withstand the long-term impact of high-pressure hydrogen (such as 35MPa). No deformation occurs, avoiding impurity leakage caused by filter damage. The gap between the sealing arc plate 2014 and the square opening is ≤5um (sealing is achieved by spring pressure, leakage is ≤5NL / min, meeting the high-pressure hydrogen sealing requirements). When the filter moves, the gap between the sealing arc plate and the square opening is 0.5-1.5mm. When the gap is 0.5mm, the leakage speed of high-pressure hydrogen (20MPa) can reach the speed of sound (about 310m / s). At this time, the purge flow rate is sufficient to blow away particles larger than 50um attached to the filter surface;

[0050] What needs to be specifically explained in this embodiment is that, in the original state, under the action of spring tension, the sealing arc plate 2014 seals the square opening. When high-pressure hydrogen flows in the airflow pipe 2011, the filter screen 2012 filters the metal impurity particles in the high-pressure hydrogen and attaches them to one side of the filter screen 2012. After the hydrogen circulates in the airflow pipe 2011 for a long time, the metal impurity particles begin to accumulate. When the metal impurity particles block the filter holes of the filter screen 2012, the hydrogen cannot pass through the filter screen 2012. Under the push of the high-pressure hydrogen, the filter screen 2012 begins to move, causing the sealing arc plate 2014 to move into the arc groove, forming a gap between the sealing arc plate 2014 and the square opening, and the high-pressure hydrogen then gushes out from the gap, making the propagation path of the high-pressure hydrogen vertically downward. The changed direction of the high-pressure hydrogen blows away the metal impurity particles attached to the filter screen 2012 and carries them out of the airflow pipe 2011 from the square opening.

[0051] Reference Figure 10 The air valve assembly 202 includes a valve seat 2021, and the top of the valve seat 2021 is movably connected to a valve core 2022. The valve core 2022 consists of an upper cylindrical block and a lower cylindrical block. The bottom of the upper cylindrical block is fixedly connected to the lower cylindrical block. The diameter of the lower cylindrical block is the same as the diameter of the circular opening at the top of the airflow tube 2011. The diameter of the upper cylindrical block is 3-5mm larger than the diameter of the lower cylindrical block. The length of the lower cylindrical block is the same as the diameter of the airflow tube 2011.

[0052] What needs to be specifically explained in this embodiment is that, according to the above principle, when the handle is rotated to move the movable rod 1045 downward, and then the valve core 2022 is moved downward, the lower cylindrical block gradually falls into the airflow tube 2011, so that the nozzle area of ​​the airflow tube 2011 gradually becomes smaller. When hydrogen passes through, the flow cross-sectional area suddenly decreases, the flow velocity increases, and the pressure decreases. According to the Bernoulli principle, the nozzle area of ​​the airflow tube 2011 gradually becomes smaller and the pressure gradually decreases, thereby achieving the effect of regulating the pressure reduction. The diameter of the upper cylindrical block is larger than that of the lower cylindrical block. The purpose is that when the lower cylindrical block completely falls into the airflow tube 2011, the bottom of the upper cylindrical block further blocks the circular opening, thereby increasing the sealing between the lower cylindrical block and the circular opening and preventing hydrogen leakage.

[0053] Reference Figure 11 The heating component 3 includes a magnetic cutting element 301, the inner side of the magnetic cutting element 301 is rotatably sleeved on the side of the roller of the fan wheel 204, and the bottom of the roller is fixedly connected to the runner 302. One end of the inner side of the bottom of the valve housing 101 is fixedly connected to the magnetic cylinder 303. The magnetic cutting element 301 and the runner 302 are both inside the magnetic cylinder 303. The magnetic cutting element 301 is composed of two conductor rings and two conductor frames. The two conductor rings are rotatably sleeved on the roller. Both sides of the two conductor rings are electrically connected to the conductor frame. A brush 304 is installed on the top of one side of the conductor ring. The brush 304 is fixedly connected to the bottom of the airflow tube 2011. The brush 304 is movably electrically connected to the conductor ring located at the top of the magnetic cutting element 301. One side of the brush 304 is electrically connected to a wire, and one end of the wire is electrically connected to the electric heating ring sleeve 203.

[0054] It should be specifically explained in this embodiment that when high-pressure hydrogen flows in the airflow pipe 2011, the high-pressure hydrogen drives the fan wheel 204 to rotate, which in turn drives the runner 302 to rotate to generate wind force. The wind force attracts the metal impurity particles discharged from the airflow pipe 2011 into the magnetic cylinder 303 and is attracted to the inner wall of the magnetic cylinder 303 by the magnetic force of the magnetic cylinder 303. The metal impurity particles adhere to the inner wall of the magnetic cylinder 303, thereby solving the problem that the metal impurity particles in the pressure reducing valve pipeline impact the valve core and valve seat with the high-speed hydrogen flow, resulting in groove-shaped erosion marks on the valve seat sealing surface. The metal impurity particles attached to the magnetic cylinder can be recycled, avoiding waste of resources.

[0055] The fan wheel 204 rotates, driving the magnetic cutting element 301 to rotate, causing the magnetic cutting element 301 to cut the magnetic field lines formed by the magnetic cylinder 303, thereby generating current. The current is transmitted to the electric heating ring 203 through the wire and the brush 304, causing the electric heating ring 203 to heat the outlet of the air flow tube 2011, thereby preventing the problem of frost on the valve body outlet surface due to the Joule-Thomson effect when the high-pressure hydrogen expands through throttling.

[0056] A method for using a high-pressure hydrogen pressure reducing valve, using the above-mentioned high-pressure hydrogen pressure reducing valve, comprises the following steps:

[0057] S1. Turning the handle drives the adjusting shaft 1042 to rotate. The adjusting shaft 1042 is fixed by a thread and rotated. When the adjusting shaft 1042 is rotated, the dial 1043 also rotates in a meshing relationship. The rotation of the dial 1043 causes one end of the transmission member 1044 to make an arc motion, and the other end of the transmission member 1044 moves downward, thereby causing the moving rod 1045 to move downward. The sleeve movably sleeved on the side of the moving rod 1045 acts as a guide rail, ensuring that the moving rod 1045 moves up and down under the action of the transmission member 1044 without deviation. When the handle is rotated in the opposite direction, one end of the transmission member 1044 makes a reverse arc motion, and the other end of the transmission member 1044 moves upward, thereby causing the moving rod 1045 to move upward.

[0058] S2. When the handle is rotated to move the movable rod 1045 downward, the valve core 2022 is moved downward, and the lower cylindrical block gradually falls into the airflow tube 2011, thereby gradually reducing the orifice area of ​​the airflow tube 2011. When hydrogen passes through, the flow cross-sectional area suddenly decreases, the flow rate increases, and the pressure decreases. According to Bernoulli's principle, the orifice area of ​​the airflow tube 2011 gradually decreases, and the pressure gradually decreases, thereby achieving the effect of regulating and reducing pressure.

[0059] S3. In the original state, under the action of spring tension, the sealing arc plate 2014 seals the square opening. When high-pressure hydrogen flows in the airflow pipe 2011, the filter 2012 filters the metal impurity particles in the high-pressure hydrogen and adheres to one side of the filter 2012. After the hydrogen flows in the airflow pipe 2011 for a long time, the metal impurity particles begin to accumulate. When the metal impurity particles block the filter holes of the filter 2012, the hydrogen cannot pass through the filter 2012. Under the push of the high-pressure hydrogen, the filter 2012 begins to move, causing the sealing arc plate 2014 to move into the arc groove, forming a gap between the sealing arc plate 2014 and the square opening. The high-pressure hydrogen then flows out of the gap, making the propagation path of the high-pressure hydrogen vertically downward. The changed direction of the high-pressure hydrogen blows away the metal impurity particles attached to the filter 2012 and carries them out of the airflow pipe 2011 through the square opening.

[0060] S4. When high-pressure hydrogen flows in the airflow pipe 2011, the high-pressure hydrogen drives the fan wheel 204 to rotate, which in turn drives the runner 302 to rotate to generate wind force. The wind force attracts the metal impurity particles discharged from the airflow pipe 2011 into the magnetic cylinder 303 and is attracted to the inner wall of the magnetic cylinder 303 by the magnetic force. The metal impurity particles adhere to the inner wall of the magnetic cylinder 303, thus solving the problem that the metal impurity particles in the pressure reducing valve pipeline are impacted by the high-speed hydrogen flow on the valve core and valve seat, resulting in groove-shaped erosion marks on the valve seat sealing surface. The metal impurity particles attached to the magnetic cylinder can be recycled, avoiding waste of resources.

[0061] S5. The fan wheel 204 rotates, driving the magnetic cutting element 301 to rotate, so that the magnetic cutting element 301 cuts the magnetic field lines formed by the magnetic cylinder 303, thereby generating current, which is transmitted to the electric heating ring 203 through the wire and the brush 304, so that the electric heating ring 203 heats the outlet of the air flow tube 2011, avoiding the problem of frost on the valve body outlet surface due to the Joule-Thomson effect when the high-pressure hydrogen expands through throttling.

[0062] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0063] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0064] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-pressure hydrogen pressure reducing valve, comprising a valve pipe assembly (2), characterized in that: The valve pipe assembly (2) comprises a hydrogen filter assembly (201), both ends of the hydrogen filter assembly (201) are fixedly connected to a valve housing (101), the top of the hydrogen filter assembly (201) is fixedly connected to a gas valve assembly (202), one end of the hydrogen filter assembly (201) is fixedly sleeved with an electric heating ring sleeve (203), and the other end of the hydrogen filter assembly (201) is rotatably connected to a fan wheel (204); The two ends of the valve pipe assembly (2) are fixedly connected to the valve assembly (1) and are fixedly connected to the inner side of the valve assembly (1); a heating assembly (3) is installed at the bottom of the valve pipe assembly (2), and the heating assembly (3) is fixedly connected to the inner side of the bottom of the valve assembly (1); The hydrogen filter assembly (201) comprises an airflow tube (2011), the top of the airflow tube (2011) is provided with a round opening, the bottom of the airflow tube (2011) is provided with a square opening, one side of the square opening is provided with an arc groove, one end of the arc groove is movably sleeved with a sealing arc plate (214), the top of one end of the sealing arc plate (2014) is fixedly connected with a fixing block (213), the top of the fixing block (2013) is fixedly connected with a filter screen (212), the filter screen (2012) is movably sleeved on the inner side of the airflow tube (2011), and the diameter of the filter screen (2012) is the same as the diameter of the airflow tube (2011); The air valve assembly (202) includes a valve seat (2021), the top of the valve seat (2021) is movably sleeved with a valve core (2022), the valve core (2022) is composed of an upper cylindrical block and a lower cylindrical block, the bottom of the upper cylindrical block is fixedly connected to the lower cylindrical block, the diameter of the lower cylindrical block is the same as the diameter of the circular opening at the top of the airflow tube (211), the diameter of the upper cylindrical block is 3-5 mm larger than the diameter of the lower cylindrical block, and the length of the lower cylindrical block is the same as the diameter of the airflow tube (2011); The heating assembly (3) comprises a magnetic cutting element (301), the side of the impeller (204) is rotatably sleeved with the magnetic cutting element (301), the bottom of the impeller (204) is fixedly connected to a runner (302), one end of the inner bottom of the valve housing (101) is fixedly connected to a magnetic cylinder (303), and the magnetic cutting element (301) and the runner (302) are both inside the magnetic cylinder (303); When high-pressure hydrogen flows through the airflow tube (211), the high-pressure hydrogen drives the fan wheel (204) to rotate, thereby driving the rotor (302) to rotate to generate wind force. The wind force can absorb the metal impurity particles in the airflow tube (2011) into the magnetic cylinder (303), and the metal impurity particles are attracted to the inner wall of the magnetic cylinder (303) by the magnetic force of the magnetic cylinder (303). The metal impurity particles adhere to the inner wall of the magnetic cylinder (303); The hydrogen filter assembly (201) and the rotor (302) cooperate to remove metal impurity particles in the hydrogen. The hydrogen filter assembly (201) and the magnetic cylinder (303) work together to recover the metal impurity particles. The fan wheel (204) cooperates with the magnetic element (301) and the magnetic cylinder (303) to enable the electric heating ring (203) to suppress frost on the valve body outlet surface.

2. A high-pressure hydrogen pressure reducing valve according to claim 1, characterized in that: The valve assembly (1) comprises a valve housing (101), one side of the valve housing (101) is fixedly connected to an air inlet pipe (102), the other side of the valve housing (101) is fixedly connected to an air outlet pipe (103), the top of the valve housing (101) is fixedly connected to a pressure regulating assembly (104), and the backs of the air inlet pipe (102) and the air outlet pipe (103) are fixedly connected to a pressure gauge.

3. A high-pressure hydrogen pressure reducing valve according to claim 2, characterized in that: The pressure regulating assembly (104) comprises a sealing cover (1041), the top of the inner side of the sealing cover (1041) is threadedly connected to an adjusting shaft (1042), one end of the adjusting shaft (1042) is fixedly connected to a handle, the surface of the middle portion of the adjusting shaft (1042) is fixedly connected to a gear ring, a rotating disk (1043) is installed at the bottom of the gear ring, the rotating disk (1043) is meshed with the gear ring, the back side of the rotating disk (1043) is rotatably connected to a rotating rod, and the rotating rod is fixedly connected to the inner wall of the sealing cover (1041); The edge position of the front side of the turntable (1043) is rotatably connected to a transmission member (1044), one end of the transmission member (1044) is rotatably sleeved on a moving rod (1045), one end of the transmission member (1044) is rotatably connected to the front side of the turntable (1043), and the other end is rotatably sleeved on the top end of the moving rod (1045), the bottom end of the moving rod (1045) is fixedly connected to a valve core (2022), and the side of the moving rod (1045) is movably sleeved with a sleeve, both sides of the sleeve are fixedly connected to connecting plates, and one end of the two connecting plates is fixedly connected to the inner wall of the sealing cover (1041).

4. A high-pressure hydrogen pressure reducing valve according to claim 3, characterized in that: The impeller (204) is composed of an impeller and a roller. The bottom of the impeller is fixedly connected to the roller. The impeller is located inside the hydrogen filter assembly (201). The roller passes through the inner wall of the hydrogen filter assembly (201) and is rotatably connected to the inner wall. A semicircular block is fixedly connected to the connection between the hydrogen filter assembly (201) and the inner wall of the valve housing (101).

5. A high-pressure hydrogen pressure reducing valve according to claim 4, characterized in that: Circular grooves are provided at both ends of the other side of the square opening, and springs are fixedly connected to the inner sides of the two circular grooves, and one end of the two springs is fixedly connected to one side of the sealing arc plate (2014).

6. A high-pressure hydrogen pressure reducing valve according to claim 5, characterized in that: The magnetic cutting element (301) is composed of two conductor rings and two conductor frames. The two conductor rings are rotatably sleeved on a rotating roller. Both sides of the two conductor rings are electrically connected to the conductor frames. A brush (304) is installed on the top of one side of the conductor ring. The brush (304) is fixedly connected to the bottom of the airflow tube (2011). The brush (304) is movably electrically connected to the conductor ring located at the top of the magnetic cutting element (301). One side of the brush (304) is electrically connected to a wire, and one end of the wire is electrically connected to the electric heating ring sleeve (203).

7. A method for using a high-pressure hydrogen pressure reducing valve, using the high-pressure hydrogen pressure reducing valve according to claim 6, characterized in that: The following steps are involved: S1. Rotating the handle drives the adjusting shaft (1042) to rotate. The adjusting shaft (1042) is fixed by a thread and rotated. When the adjusting shaft (1042) rotates, the turntable (1043) also rotates in a meshing relationship. The rotation of the turntable (1043) causes one end of the transmission member (1044) to move in an arc shape, and the other end of the transmission member (1044) moves downward, thereby causing the moving rod (1045) to move downward. The sleeve movably sleeved on the side of the moving rod (1045) acts as a guide rail, ensuring that the moving rod (1045) moves up and down without deflection under the action of the transmission member (1044). When the handle rotates in the opposite direction, one end of the transmission member (1044) moves in the opposite direction, and the other end of the transmission member (1044) moves upward, thereby causing the moving rod (1045) to move upward. S2. When the handle is rotated to move the moving rod (1045) downward, the valve core (2022) is moved downward, and the lower cylindrical block gradually falls into the airflow tube (211), so that the nozzle area of ​​the airflow tube (211) gradually decreases. When hydrogen passes through, the flow cross-sectional area suddenly decreases, the flow rate increases, and the pressure decreases. The nozzle area of ​​the airflow tube (2011) gradually decreases, and the pressure gradually decreases, thereby achieving the effect of regulating and reducing pressure; S3. In the original state, under the action of spring tension, the sealing arc plate (2014) seals the square opening. When high-pressure hydrogen flows in the airflow pipe (2011), the filter (2012) filters the metal impurity particles in the high-pressure hydrogen and attaches to one side of the filter (2012). After hydrogen flows in the airflow pipe (2011) for a long time, the metal impurity particles begin to accumulate. When the metal impurity particles block the filter holes of the filter (2012), the metal impurity particles begin to accumulate. When the filter (2012) is closed, hydrogen cannot pass through the filter (2012). Under the push of the high-pressure hydrogen, the filter (2012) begins to move, causing the sealing arc plate (2014) to move into the arc groove. A gap is formed between the sealing arc plate (2014) and the square opening, and the high-pressure hydrogen flows out from the gap, making the propagation path of the high-pressure hydrogen vertically downward. The changed direction of the high-pressure hydrogen blows away the metal impurity particles attached to the filter (2012) and carries them out of the air flow pipe (2011) from the square opening. S4. When high-pressure hydrogen flows through the airflow tube (2011), the high-pressure hydrogen drives the fan wheel (204) to rotate, thereby driving the rotor (302) to rotate to generate wind force. The wind force attracts the metal impurity particles discharged from the airflow tube (2011) into the magnetic cylinder (303), and the metal impurity particles are attracted to the inner wall of the magnetic cylinder (303) by the magnetic force of the magnetic cylinder (303). The metal impurity particles adhere to the inner wall of the magnetic cylinder (303); S5. The fan wheel (204) rotates, driving the magnetic cutting element (301) to rotate, so that the magnetic cutting element (301) cuts the magnetic field lines formed by the magnetic cylinder (303), thereby generating current, which is transmitted to the electric heating ring (203) through the wire and the brush (304), so that the electric heating ring (203) heats the outlet of the air flow tube (2011).

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