A high-precision hydrogen filter for hydrogen stations

Abstract

The present application relates to the field of hydrogen filters, and specifically discloses a high-precision hydrogen filter for hydrogen stations, which includes a tank body, a feed pipe and a discharge pipe, the discharge pipe is connected to a detection pipe, a transparent pipe is arranged in the detection pipe, a supply bin and a recovery bin are detachably connected to the detection pipe, the transparent pipe is connected to the supply bin and the recovery bin, a reagent rod is placed in the supply bin, a pressure plate is elastically arranged on the bottom wall of the supply bin, a push-pull rod is also inserted in the transparent pipe, a sealing pipe adapted to be inserted with the reagent rod is fixedly connected to the inner wall of the detection pipe and relatively to the transparent pipe, one end of the sealing pipe away from the transparent pipe is sealed and the other end is open, a color sensor aligned with the transparent pipe is arranged in the detection pipe, a driving mechanism for driving the push-pull rod to move is arranged in the detection pipe, and a grabbing and recovery assembly for moving the reagent rod after the detection is completed to the recovery bin is also arranged in the detection pipe. The present application has the effect of facilitating the staff to timely understand whether the filter cartridge needs to be replaced.

Description

Technical Field

[0001] The present application relates to the field of hydrogen filters, and in particular to a high-precision hydrogen filter for a hydrogen station. Background Art

[0002] A hydrogen filter is a device used to remove impurities from hydrogen. It has the advantages of being safe, fast and economical. Its main function is to remove impurities, dust, moisture, hydrocarbon oil and other impurities from hydrogen to ensure the cleanliness and safety of the hydrogen supply. A hydrogen station produces hydrogen through a specific process and provides hydrogen filling, storage, compression and other services.

[0003] The hydrogen filter mainly removes impurities in hydrogen by physical or chemical methods. The operating process of the filter is that the hydrogen and impurity mixed fluid is pumped from the feed pipe to the filter cartridge in the tank body through the vacuum pump, so that the hydrogen in the mixed fluid passes through the filter cartridge and the impurities are blocked by the filter cartridge. The filtered hydrogen flows out from the discharge pipe of the tank body. When there are too many impurities in the filter cartridge, the filter cartridge needs to be replaced.

[0004] In view of the above-mentioned related technologies, the inventors believe that the following defects exist: when there are many impurities on the filter cartridge, the filter cartridge needs to be disassembled and replaced, and whether the filter cartridge needs to be replaced is mainly judged based on the pressure at the discharge pipe. Since the oil has strong adhesion and is very easy to combine with other impurities to block the filter cartridge, the oil leaked from the filter cartridge is also easy to adhere to the inner wall of the tank body and is difficult to clean. That is, when there are many impurities on the filter cartridge, especially when there is a lot of oil, the gaps in the filter cartridge are blocked in large quantities, resulting in a low air pressure at the discharge pipe, and then it needs to be replaced; but this judgment method has a large error. Due to the uneven distribution of impurities in the filter cartridge, when there are more impurities in some places of the filter cartridge, more impurities will leak out of this part of the filter cartridge, while the fluid in the position with fewer impurities in the filter cartridge will pass through faster. Figure 5 It is a schematic diagram of the structure of the filter cartridge, 91 is the part with more impurities, 92 is the part with less impurities. Since the impurities have greater inertia and directly impact the part with more impurities, it is easy to cause the accumulation of impurities on the part with more impurities. At this time, hydrogen will accelerate through the part with less impurities, and the effect on the overall flow reduction degree and the overall air permeability of the filter cartridge is not significant. However, at this time, the part with more impurities is saturated with impurities and more impurities penetrate the filter cartridge, which affects the staff's judgment on the filter cartridge. Summary of the invention

[0005] In order to improve the problem that it is difficult to judge the filtering capacity of the filter cartridge, the present application provides a high-precision hydrogen filter for a hydrogen station.

[0006] The high-precision hydrogen filter for a hydrogen station provided in this application adopts the following technical solution:

[0007] A high-precision hydrogen filter for a hydrogen station comprises a tank body, a feed pipe arranged at the top of the tank body and a discharge pipe arranged at the bottom of the tank body, characterized in that: the discharge pipe is connected with a detection tube, a transparent tube is arranged in the detection tube, a supply bin and a recovery bin are detachably connected to the detection tube, the transparent tube is connected with the supply bin and the recovery bin, a plurality of reagent rods that change color in reaction with oil are placed in the supply bin, a pressure plate is elastically arranged on the bottom wall of the supply bin, elastic rings are fixed at both ends of the transparent tube, a push-pull rod is inserted in the transparent tube, and the push-pull rod passes through the transparent tube. The inner diameter of one of the elastic rings and the other elastic ring is smaller than the diameter of the reagent rod. A sealing tube that is plugged and adapted to the reagent rod is fixedly connected to the inner wall of the detection tube and is opposite to the transparent tube. The sealing tube is sealed at one end away from the transparent tube and open at the other end. An elastic ring is also fixedly connected to the peripheral wall of the open end of the sealing tube. A color sensor aligned with the transparent tube is arranged in the detection tube. A driving mechanism for driving the push-pull rod to move is arranged in the detection tube. A grabbing and recovery component for moving the reagent rod after detection to the recovery bin is also arranged in the detection tube.

[0008] By adopting the above technical solution, the driving mechanism drives the push-pull rod to move in the direction close to the sealing tube, and the moving push-pull rod pushes the reagent rod in the supply bin out of the transparent tube and inserts it into the sealing tube. Then the driving mechanism drives the push-pull rod to move slowly in the opposite direction. Since the gap between the transparent tube and the sealing tube is small and the elastic ring has a strong ability to block the oil, the oil mixed in the hydrogen reacts with the exposed part of the reagent rod between the transparent tube and the sealing tube, thereby causing the position where the reagent rod touches the oil to change color. Since the push-pull rod moves slowly, that is, the reagent rod moves slowly, the exposed part of the reagent rod is always The color sensor is in a changing state to continuously contact the filtered fluid, and the color sensor continuously detects the reacted reagent rod part in the transparent tube, and then feeds back the color change on the reagent rod and the depth of the changed color to the staff, so that the staff can quickly and accurately judge the state of the filter cartridge and its filtering capacity; when a reagent rod is detected, the grabbing and recycling component moves the used reagent rod to the recycling bin, and the driving mechanism continues to drive the push-pull rod to move the unused reagent rod, so as to continue to detect the oil content in the fluid, reducing the cycle of the staff replacing the reagent rod in the detection tube.

[0009] Optionally, the driving mechanism includes a push-pull assembly arranged in the detection tube for driving the push-pull rod to move, the push-pull assembly includes a fixed block fixedly connected to the inner wall of the detection tube, a fixed ring fixedly connected to the push-pull rod, a first spring sleeved on the push-pull rod, a passive magnet fixedly connected to the end of the push-pull rod away from the transparent tube, and an active magnet movably arranged in the detection tube and attracted to the passive magnet, the push-pull rod passes through the fixed block, and the first spring is located between the fixed block and the fixed ring; the maximum elastic force of the first spring is greater than the maximum suction force between the active magnet and the passive magnet, and when the active magnet and the passive magnet are in contact and close to the fixed block, the suction force between the active magnet and the passive magnet is greater than the elastic force of the first spring, and the driving mechanism also includes a power assembly arranged in the detection tube for driving the active magnet to move.

[0010] By adopting the above technical solution, the power component drives the active magnet to move. When the active magnet is pressed against the passive magnet and the active magnet moves upward, the push-pull rod also moves upward, thereby causing the reagent rod to move upward. When the active magnet continues to move until the elastic force of the first spring is greater than the suction force between the active magnet and the passive magnet, the first spring pushes the fixed ring to move downward quickly, and the push-pull rod also moves downward quickly, thereby causing the reagent rod to move quickly toward the sealing tube. That is, the reagent rod moves upward relatively slowly and moves downward relatively quickly. The reagent rod moves slowly when reacting, and moves quickly before entering the reaction.

[0011] Optionally, the power assembly includes a rotating shaft rotatably connected to the detection tube, a spiral blade fixed to the rotating shaft, a worm fixed to one end of the rotating shaft near the push-pull rod, a worm wheel rotatably connected to the detection tube and matched with the worm, a synchronous gear coaxially fixed to the end of the worm wheel, a reduction gear rotatably connected to the detection tube, a driving gear coaxially fixed to the end of the reduction gear, a passive gear rotatably arranged in the detection tube and meshing with the active gear, a winding wheel coaxially fixed to the end of the passive gear and a pull rope wound on the winding wheel, the free end of the pull rope is connected to the active magnet, and the power assembly also includes a control component for controlling the meshing connection state of the active gear and the passive gear.

[0012] By adopting the above technical solution, the fast-flowing fluid drives the rotating shaft connected with the spiral blade to rotate, the worm also rotates synchronously, the worm wheel and the synchronous gear on the worm wheel also rotate accordingly, and the synchronous gear drives the reduction gear to rotate, thereby rotating the driving gear. The reduction gear effectively increases the torque on the driving gear and reduces the speed of the driving gear. When the control component controls the passive gear to mesh with the active gear, the passive gear rotates with the rotation of the active gear, and the winding wheel also rotates accordingly, thereby making the winding wheel in a rope-collecting state, that is, the pull rope pulls the active magnet to rise, and when the active magnet rises to the point where the first spring force is greater than the suction force between the active magnet and the passive magnet, the active magnet is separated from the passive magnet, and the control component controls the passive gear to disengage from the meshing state with the active gear. At this time, the pull rope moves downward under the influence of the gravity of the active magnet, that is, the rope winding wheel is in a rope-releasing state. The entire process of controlling the lifting and lowering of the active magnet does not require an external power source. Since the power of the fluid to drive the spiral blade to rotate is small, the reduction gear amplifies the torque received by the active gear, thereby enabling the flowing fluid to smoothly drive the normal operation of the power component.

[0013] Optionally, the control member is an elastic telescopic rod with one end fixed to the inner wall of the detection tube, the free end of the elastic telescopic rod is rotatably connected to the rotating shaft of the winding wheel, the elastic force of the elastic telescopic rod is greater than the total gravity of the active magnet and the pull rope, and the elastic force of the elastic telescopic rod is less than the total gravity of the active magnet and the passive magnet.

[0014] By adopting the above technical solution, when the active magnet is close to the passive magnet, the elastic telescopic rod is contracted by the gravity of the active magnet and the suction force of the passive magnet on the active magnet, thereby causing the winding wheel to descend, and the passive gear also descends to mesh with the active gear. Since the active gear is always in a rotating state, the passive gear rotates, and the winding wheel reels in the line; when the active magnet rises to the point where the elastic force of the first spring is greater than the suction force between the active magnet and the passive magnet, the active magnet is separated from the passive magnet. Since the elastic force of the elastic telescopic rod is greater than the gravity of the pull rope and the active magnet, the elastic telescopic rod is extended, and the passive gear also moves accordingly, causing the passive gear to be out of mesh with the active gear. At this time, the winding wheel releases the line under the influence of the pull rope and the gravity of the active magnet, thereby causing the active magnet to descend.

[0015] Optionally, the grabbing and recovering assembly includes an elastic hook fixed on the peripheral wall of the push-pull rod near one end of the reagent rod and a lever elastically hinged on the inner wall of the transparent tube, the reagent rod near the push-pull rod is provided with a hook groove compatible with the elastic hook at one end, the diameter of the reagent rod on one side of the hook groove near the push-pull rod is smaller than the diameter on the other side, the hinge axis of the lever is located at the end of the lever away from the sealing tube, and a accommodating groove for accommodating the lever is provided in the transparent tube, and when the hook groove of the reagent rod moves to be opposite to the lever, the free end of the lever moves into the groove.

[0016] By adopting the above technical solution, when the push-pull rod pushes the reagent rod, the elastic hook enters the hook groove, and when the push-pull rod moves upward, the elastic hook hooks the groove wall of the hook groove, thereby causing the reagent rod to move upward until the hook groove of the reagent rod moves to be opposite to the push rod, and the push rod is affected by the elastic force so that the free end of the push rod enters the hook groove from the accommodating groove, and when the push-pull rod continues to move upward, one side of the reagent rod close to the end of the push-pull rod is pulled by the elastic hook, and the other side is pushed by the push rod, and the directions of the two forces are opposite, thereby causing the reagent rod to flip into the recovery bin.

[0017] Optionally, a replacement port is opened on the detection tube, and the supply bin extends from the replacement port to the outside of the detection tube. The supply bin and the recovery bin are arranged on both sides of the transparent tube. The cross-sectional size of the recovery bin is not larger than the size of the replacement port, and the supply bin and the detection tube are both fixedly connected with flanges at the replacement port.

[0018] By adopting the above technical solution, when the reagent rods in the supply bin are used up, the push-pull rod is raised to a higher position, and the connection between the two flanges is released, and the supply bin and the recovery bin can be pulled out, thereby facilitating the staff to add new reagent rods to the supply bin and take out the used reagent rods in the recovery bin.

[0019] Optionally, a filter paper is provided on the side of the spiral blade facing the flow direction of the fluid.

[0020] By adopting the above technical solution, the inertia of particles with larger mass is also larger. When the fluid passes through the filter paper, the particles with large inertia first hit the filter paper and are then collected by the filter paper, while the smaller particles continue to move along the airflow. In addition, the farther the fluid is from the end of the discharge pipe at the spiral blade, the slower the flow rate of the fluid. That is, the filter paper is distributed from large particles to small particles from the end close to the discharge pipe to the end far from the discharge pipe, so that the performance of the filter cartridge in filtering different particles can be judged according to the distribution degree of particles on the surface of the filter paper during later maintenance.

[0021] Optionally, the detection tube is flared at both ends of the spiral blade.

[0022] By adopting the above technical solution, when the fluid enters the spiral blade, the diameter of the detection tube gradually decreases, thereby increasing the flow rate of the fluid, so that the spiral blade is subjected to greater pressure, thereby increasing the power of the spiral blade.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The driving mechanism drives the push-pull rod to move in the direction close to the sealing tube. The moving push-pull rod pushes the reagent rod in the supply bin out of the transparent tube and inserts it into the sealing tube. Then the driving mechanism drives the push-pull rod to move slowly in the opposite direction. Since the gap between the transparent tube and the sealing tube is small and the elastic ring has a strong ability to block oil, the oil mixed in the hydrogen reacts with the exposed part of the reagent rod between the transparent tube and the sealing tube, and the position where the reagent rod touches the oil changes color. Since the push-pull rod moves slowly, that is, the reagent rod moves slowly, the exposed part of the reagent rod is always in a changing state to continuously contact with the filtered fluid, so that the color sensor can feed back the color change on the reagent rod and the depth of the changed color to the staff, so that the staff can quickly and accurately judge the filtering capacity of the filter cartridge;

[0025] 2. When the active magnet and the passive magnet are pressed against each other and the active magnet moves upward, the push-pull rod also moves upward, thereby causing the reagent rod to move upward. When the active magnet continues to move until the elastic force of the first spring is greater than the suction force between the active magnet and the passive magnet, the first spring pushes the fixed ring to move downward quickly, and the push-pull rod also moves downward quickly, thereby causing the reagent rod to move quickly toward the sealing tube. That is, the upward movement of the reagent rod is relatively slow, and the downward movement is relatively fast. The reagent rod moves slowly when reacting, and moves quickly before entering the reaction, thereby shortening the detection window period.

[0026] 3. The fast-flowing fluid drives the rotating shaft connected with the spiral blade to rotate, the worm also rotates synchronously, the worm wheel and the synchronous gear on the worm wheel also rotate accordingly, and the synchronous gear drives the reduction gear to rotate, thereby rotating the driving gear. The reduction gear effectively increases the torque on the driving gear and reduces the speed of the driving gear. When the active magnet and the passive magnet are close to each other, the elastic telescopic rod is contracted by the gravity of the active magnet and the suction of the passive magnet on the active magnet, thereby causing the winding wheel to drop, and the passive gear also drops to mesh with the active gear. Since the active gear is always in a rotating state, the passive gear rotates, and the winding wheel reels at this time; when the active magnet rises to the point where the first spring force is greater than the suction force between the active magnet and the passive magnet, the active magnet is separated from the passive magnet. Since the elastic force of the elastic telescopic rod is greater than the gravity of the pull rope and the active magnet, the elastic telescopic rod is extended, and the passive gear also moves accordingly, causing the passive gear to be out of meshing with the active gear. At this time, the winding wheel is affected by the pull rope and the gravity of the active magnet to release the line, thereby causing the active magnet to drop. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0028] Figure 2 It hides the back edge of the tank and the feed pipe Figure 1 Schematic diagram of the cross-sectional structure along the AA line;

[0029] Figure 3 It is a schematic cross-sectional structure diagram of the embodiment of the present application mainly used to show the elastic hook, the pressure plate, the second spring, the elastic ring, the reagent rod, the sealing tube, the fixing block, the fixing ring, the first spring and the passive magnet;

[0030] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure of part B;

[0031] Figure 5 It is a structural diagram that bravely shows the distribution of impurities in the filter cartridge.

[0032] Reference numerals: 1, tank body; 11, feed pipe; 12, discharge pipe; 21, detection tube; 22, transparent tube; 221, receiving tank; 23, supply bin; 24, recovery bin; 241, baffle; 25, reagent rod; 251, hook groove; 26, push-pull rod; 27, sealing tube; 28, color sensor; 3, driving mechanism; 31, push-pull assembly; 311, fixed block; 312, fixed ring; 313, first spring; 314, passive magnet; 315, active magnet; 32 , power assembly; 32a, rotating shaft; 32b, spiral blade; 32c, worm; 32d, worm wheel; 32e, synchronous gear; 32f, reduction gear; 32g, driving gear; 32h, passive gear; 32i, winding wheel; 32j, pull rope; 32k, elastic telescopic rod; 41, elastic hook; 42, lever; 51, pressure plate; 52, second spring; 6, elastic ring; 71, flange; 72, replacement port; 8, filter paper; 91, part with more impurities; 92, part with less impurities. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The present application embodiment discloses a high-precision hydrogen filter for a hydrogen station. Figure 1 , Figure 2 and Figure 3A high-precision hydrogen filter for a hydrogen station includes a tank body 1, a feed pipe 11 connected to the top of the tank body 1 and a discharge pipe 12 connected to the bottom of the tank body 1, the discharge pipe 12 is connected to a detection tube 21, a transparent tube 22 is arranged in the detection tube 21, a supply bin 23 and a recovery bin 24 are detachably connected to the detection tube 21, the transparent tube 22 is connected to the supply bin 23 and the recovery bin 24, a plurality of reagent rods 25 that change color in reaction with oil are placed in the supply bin 23, and the specific number of the reagent rods 25 increases or decreases according to the actual working conditions, a pressure plate 51 is also slidably connected to the inner bottom wall of the supply bin 23, two second springs 52 are also welded between the pressure plate 51 and the inner bottom wall of the supply bin 23, and elastic rings 6 are fixedly connected to both ends of the transparent tube 22, A push-pull rod 26 is also inserted in the transparent tube 22, and the push-pull rod 26 passes through one of the elastic rings 6. The inner diameter of the other elastic ring 6 is smaller than the diameter of the reagent rod 25. A sealing tube 27 that is plugged and adapted to the reagent rod 25 is fixedly connected to the inner wall of the detection tube 21 and is relatively fixed to the transparent tube 22. The sealing tube 27 is sealed at one end away from the transparent tube 22 and open at the other end, and the elastic ring 6 is also fixedly connected to the peripheral wall of the open end of the sealing tube 27. A color sensor 28 aimed at the transparent tube 22 and with a light source is arranged in the detection tube 21. A driving mechanism 3 for driving the push-pull rod 26 to move is arranged in the detection tube 21. A grabbing and recovery component for moving the reagent rod 25 after detection to the recovery bin 24 is also arranged in the detection tube 21.

[0035] The driving mechanism 3 drives the push-pull rod 26 to move in the direction close to the sealing tube 27. The moving push-pull rod 26 pushes the reagent rod 25 in the supply bin 23 out of the transparent tube 22 and inserts it into the sealing tube 27. Then the driving mechanism 3 drives the push-pull rod 26 to move slowly in the opposite direction. Since the gap between the transparent tube 22 and the sealing tube 27 is small and the elastic ring 6 has a strong ability to block oil, the oil mixed in the hydrogen reacts with the exposed part of the reagent rod 25 between the transparent tube 22 and the sealing tube 27, thereby causing the position where the reagent rod 25 touches the oil to change color. Since the push-pull rod 26 moves slowly, that is, the reagent rod 25 moves slowly, the exposed part of the reagent rod 25 The position is always in a changing state to continuously contact with the filtered fluid, and the color sensor 28 continuously detects the reacted position of the reagent rod 25 in the transparent tube 22, and then feeds back the color change on the reagent rod 25 and the depth of the changed color to the staff, so that the staff can quickly and accurately judge the filtering capacity of the filter cartridge; and after the detection of a reagent rod 25 is completed, the grabbing and recycling component moves the used reagent rod 25 to the recycling bin 24, and the driving mechanism 3 continues to drive the push-pull rod 26 to move the unused reagent rod 25, so as to continue to detect the oil content in the fluid, reducing the cycle of the staff replacing the reagent rod 25 in the detection tube 21.

[0036] Reference Figure 2The driving mechanism 3 includes a push-pull assembly 31 disposed in the detection tube 21 for driving the push-pull rod 26 to move. The push-pull assembly 31 includes a fixed block 311 fixed to the inner wall of the detection tube 21, a fixed ring 312 fixed to the push-pull rod 26, a first spring 313 sleeved on the push-pull rod 26, a passive magnet 314 fixed to the end of the push-pull rod 26 away from the transparent tube 22, and an active magnet 315 movably disposed in the detection tube 21 and attracted to the passive magnet 314. The push-pull rod 26 passes through the fixed block 311, the first spring 313 is located between the fixed block 311 and the fixed ring 312; the maximum elastic force of the first spring 313 is greater than the maximum suction force between the active magnet 315 and the passive magnet 314. When the active magnet 315 and the passive magnet 314 are in contact with each other and are close to the fixed block 311, the suction force between the active magnet 315 and the passive magnet 314 is greater than the elastic force of the first spring 313. The driving mechanism 3 also includes a power component 32 arranged in the detection tube 21 for driving the active magnet 315 to move.

[0037] The power assembly 32 drives the active magnet 315 to move. When the active magnet 315 is pressed against the passive magnet 314 and the active magnet 315 moves upward, the push-pull rod 26 also moves upward, thereby causing the reagent rod 25 to move upward. When the active magnet 315 continues to move until the elastic force of the first spring 313 is greater than the suction force between the active magnet 315 and the passive magnet 314, the first spring 313 pushes the fixing ring 312 to move downward quickly, and the push-pull rod 26 also moves downward quickly, thereby causing the reagent rod 25 to move quickly toward the sealing tube 27. That is, the upward movement process of the reagent rod 25 is relatively slow, and the downward movement process is relatively fast. The movement speed of the reagent rod 25 during the reaction is relatively slow, and the movement speed of the reagent rod 25 before entering the reaction is relatively fast.

[0038] Reference Figure 2The power assembly 32 includes a rotating shaft 32a rotatably connected to the detection tube 21, a spiral blade 32b fixed to the rotating shaft 32a, a worm 32c fixed to one end of the rotating shaft 32a near the push-pull rod 26, a worm wheel 32d rotatably connected to the detection tube 21 and adapted to the worm 32c, a synchronous gear 32e coaxially fixed to the end of the worm wheel 32d, a reduction gear 32f rotatably connected to the detection tube 21, a driving gear 32g coaxially fixed to the end of the reduction gear 32f, and a rotatably arranged in the detection tube. 21 and meshing with the driving gear 32g, a passive gear 32h, a winding wheel 32i coaxially fixed to the end of the passive gear 32h, and a pull rope 32j wound on the winding wheel 32i, the number of teeth of the reduction gear 32f is greater than the number of teeth of the synchronous gear 32e and the driving gear 32g, the number of teeth of the driving gear 32g is less than the number of teeth of the passive gear 32h, the reduction gear 32f and the driving gear 32g can be multiple groups, that is, the driving gear 32g is meshed with the reduction gear 32f adjacent to it, so as to reduce speed in turn. The free end of the pull rope 32j is connected to the active magnet 315, and the power assembly 32 also includes a control component for controlling the meshing connection state of the active gear 32g and the passive gear 32h. The control component is an elastic telescopic rod 32k with one end fixed to the inner wall of the detection tube 21. The free end of the elastic telescopic rod 32k is rotatably connected to the rotating shaft of the winding wheel 32i. The elastic force of the elastic telescopic rod 32k is greater than the total gravity of the active magnet 315 and the pull rope 32j, and the elastic force of the elastic telescopic rod 32k is less than the total gravity of the active magnet 315 and the passive magnet 314.

[0039] The fast-flowing fluid drives the rotating shaft 32a connected to the spiral blade 32b to rotate, and the worm 32c also rotates synchronously, and the worm wheel 32d and the synchronous gear 32e on the worm wheel 32d also rotate accordingly, and the synchronous gear 32e drives the reduction gear 32f to rotate, thereby rotating the driving gear 32g, and the reduction gear 32f effectively increases the torque on the driving gear 32g and reduces the speed of the driving gear 32g. When the active magnet 315 is close to the passive magnet 314, the elastic telescopic rod 32k is contracted by the gravity of the active magnet 315 and the suction force of the passive magnet 314 on the active magnet 315, thereby causing the winding wheel 32i to drop, and the passive gear 32h also drops to the same level as the active gear 32g is meshed with each other. Since the active gear 32g is always in a rotating state, the passive gear 32h is rotated, and the winding wheel 32i is winding. When the active magnet 315 rises to the point where the elastic force of the first spring 313 is greater than the suction force between the active magnet 315 and the passive magnet 314, the active magnet 315 is separated from the passive magnet 314. Since the elastic force of the elastic telescopic rod 32k is greater than the gravity of the pull rope 32j and the active magnet 315, the elastic telescopic rod 32k is extended, and the passive gear 32h is also moved accordingly, so that the passive gear 32h is out of meshing with the active gear 32g. At this time, the winding wheel 32i is affected by the gravity of the pull rope 32j and the active magnet 315 to release the line, thereby causing the active magnet 315 to descend.

[0040] Reference Figure 2 , Figure 3 and Figure 4 The grabbing and recovering assembly includes an elastic hook 41 fixed on the peripheral wall of the push-pull rod 26 near one end of the reagent rod 25 and a lever 42 elastically hinged on the inner wall of the transparent tube 22. A hook groove 251 adapted to the elastic hook 41 is provided at one end of the reagent rod 25 near the push-pull rod 26. The diameter of one side of the reagent rod 25 near the push-pull rod 26 at the hook groove 251 is smaller than the diameter of the other side. The hinge axis of the lever 42 is located at the end of the lever 42 away from the sealing tube 27. A receiving groove 221 for accommodating the lever 42 is provided in the transparent tube 22. When the hook groove 251 of the reagent rod 25 moves to be opposite to the lever 42, the free end of the lever 42 moves into the groove.

[0041] When the push-pull rod 26 pushes the reagent rod 25, the elastic hook 41 enters the hook groove 251, and when the push-pull rod 26 moves upward, the elastic hook 41 hooks the groove wall of the hook groove 251, thereby causing the reagent rod 25 to move upward as well, until the hook groove 251 of the reagent rod 25 moves to be opposite to the lever 42, and the lever 42 is affected by the elastic force so that the free end of the lever 42 enters the hook groove 251 from the accommodating groove 221, and when the push-pull rod 26 continues to move upward, one side of the reagent rod 25 close to the end of the push-pull rod 26 is pulled by the elastic hook 41, and the other side is pushed by the lever 42, and the directions of the two forces are opposite, thereby causing the reagent rod 25 to flip over into the recovery bin 24. The inner wall of the recovery bin 24 near one end of the supply bin 23 is elastically hinged with a baffle 241. When a new reagent rod 25 in the supply bin 23 is pushed into the transparent tube 22, the baffle 241 prevents the reagent rod 25 from continuing to move into the recovery bin 24. That is, at this time, the reagent rod 25 is in the transparent tube 22 waiting to be pushed by the push-pull rod 26; when the reagent rod 25 after use is completely located in the transparent tube 22 and continues to be pulled by the elastic hook 41, the lever 42 and the elastic hook 41 cooperate to allow the reagent rod 25 to break through the obstruction of the baffle 241 and enter the recovery bin 24.

[0042] Reference Figure 2 and Figure 3 , a replacement port 72 is provided on the detection tube 21, the supply bin 23 extends from the replacement port 72 to the outside of the detection tube 21, the supply bin 23 and the recovery bin 24 are arranged on both sides of the transparent tube 22, the cross-sectional size of the recovery bin 24 is not larger than the size of the replacement port 72, the space of the supply bin 23 is smaller than the recovery bin 24, and the supply bin 23 and the detection tube 21 are both fixedly connected with flanges 71 at the replacement port 72. When the reagent rod 25 in the supply bin 23 is used up, when the push-pull rod 26 is raised to a higher position, the connection between the two flanges 71 is released, and the supply bin 23 and the recovery bin 24 can be withdrawn, so that it is convenient for the staff to add new reagent rods 25 to the supply bin 23 and take out the used reagent rods 25 in the recovery bin 24.

[0043] Reference Figure 2 A filter paper 8 is provided on the side of the spiral blade 32b facing the flow direction of the fluid, and the detection tube 21 is expanded at both ends of the spiral blade 32b.

[0044] The inertia of the particles with larger mass is also larger. When the fluid passes through the filter paper 8, the particles with larger inertia first hit the filter paper 8 and are then collected by the filter paper 8. The smaller particles continue to move along the airflow. In addition, the farther the fluid is from the end of the discharge pipe 12 at the spiral blade 32b, the slower the flow rate of the fluid. That is, the filter paper 8 is distributed from large particles to small particles from the end close to the discharge pipe 12 to the end far from the discharge pipe 12. This is convenient for the staff to judge the performance of the filter cartridge in filtering different particles according to the distribution degree of particles on the surface of the filter paper 8 during maintenance.

[0045] The implementation principle of a high-precision hydrogen filter for a hydrogen station in the embodiment of the present application is as follows: the fast-flowing fluid drives the rotating shaft 32a connected to the spiral blade 32b to rotate, the worm 32c also rotates synchronously, the worm wheel 32d and the synchronous gear 32e on the worm wheel 32d also rotate accordingly, the synchronous gear 32e drives the reduction gear 32f to rotate, and then the driving gear 32g rotates, the reduction gear 32f effectively increases the torque on the driving gear 32g and reduces the speed of the driving gear 32g. When the active magnet 315 is close to the passive magnet 314, the elastic telescopic rod 32k is contracted by the gravity of the active magnet 315 and the suction force of the passive magnet 314 on the active magnet 315, thereby causing the winding wheel 32i to drop, and the passive gear 32h also drops to mesh with the active gear 32g. Since the active gear 32g is always in a rotating state, the driven gear 32h is The movable gear 32h rotates, at which time the winding wheel 32i reels in the line, and the push-pull rod 26 rises, causing the reagent rod 25 to move, thereby causing the exposed part of the reagent rod 25 to be always in a changing state, so as to continuously contact with the filtered fluid, thereby facilitating continuous detection by the color sensor 28; when the active magnet 315 rises to the point where the elastic force of the first spring 313 is greater than the suction force between the active magnet 315 and the passive magnet 314, the active magnet 315 is separated from the passive magnet 314, and since the elastic force of the elastic telescopic rod 32k is greater than the gravity of the pull rope 32j and the active magnet 315, the elastic telescopic rod 32k is extended, and the passive gear 32h is also moved accordingly, causing the passive gear 32h to be out of engagement with the active gear 32g. At this time, the winding wheel 32i is affected by the gravity of the pull rope 32j and the active magnet 315 to release the line, thereby causing the active magnet 315 to drop, causing the push-pull rod 26 to push the reagent rod 25 to move.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-precision hydrogen filter for a hydrogen station, comprising a tank body, an inlet pipe arranged at the top of the tank body, and an outlet pipe arranged at the bottom of the tank body, characterized in that: The discharge pipe is connected with a detection tube, a transparent tube is arranged in the detection tube, a supply bin and a recovery bin are detachably connected to the detection tube, the transparent tube is connected with the supply bin and the recovery bin, a plurality of reagent rods which change color in reaction with the oil are placed in the supply bin, a pressure plate is elastically arranged on the bottom wall of the supply bin, two second springs are welded between the pressure plate and the bottom wall of the supply bin, elastic rings are fixedly connected at both ends of the transparent tube, a push-pull rod is also inserted in the transparent tube, and the push-pull rod passes through one of the elastic rings, and the inner diameter of the other elastic ring is smaller than the diameter of the reagent rod, a sealing tube which is plugged and adapted to the reagent rod is fixedly connected to the inner wall of the detection tube and opposite to the transparent tube, one end of the sealing tube away from the transparent tube is sealed, and the other end is open, and the peripheral wall of the open end of the sealing tube is also fixedly connected with an elastic ring, a color sensor aimed at the transparent tube is arranged in the detection tube, a driving mechanism for driving the push-pull rod to move is arranged in the detection tube, and a grabbing and recovery component for moving the reagent rod after detection to the recovery bin is also arranged in the detection tube; The driving mechanism includes a push-pull assembly arranged in the detection tube for driving the push-pull rod to move, the push-pull assembly includes a fixed block fixed to the inner wall of the detection tube, a fixed ring fixed to the push-pull rod, a first spring sleeved on the push-pull rod, a passive magnet fixed to an end of the push-pull rod away from the transparent tube, and an active magnet movably arranged in the detection tube and attracted to the passive magnet, the push-pull rod passes through the fixed block, and the first spring is located between the fixed block and the fixed ring; The maximum elastic force of the first spring is greater than the maximum suction force between the active magnet and the passive magnet. When the active magnet and the passive magnet are in contact and close to the fixed block, the suction force between the active magnet and the passive magnet is greater than the elastic force of the first spring. The driving mechanism also includes a power component arranged in the detection tube for driving the active magnet to move.

2. A high-precision hydrogen filter for a hydrogen station according to claim 1, characterized in that: The power assembly includes a rotating shaft rotatably connected in the detection tube, a spiral blade fixed on the rotating shaft, a worm fixed on one end of the rotating shaft near the push-pull rod, a worm wheel rotatably connected in the detection tube and matched with the worm, a synchronous gear coaxially fixed to the end of the worm wheel, a reduction gear rotatably connected in the detection tube, a driving gear coaxially fixed to the end of the reduction gear, a passive gear rotatably arranged in the detection tube and meshing with the active gear, a winding wheel coaxially fixed to the end of the passive gear and a pull rope wound on the winding wheel, the free end of the pull rope is connected to the active magnet, and the power assembly also includes a control component for controlling the meshing connection state of the active gear and the passive gear.

3. A high-precision hydrogen filter for a hydrogen station according to claim 2, characterized in that: The control component is an elastic telescopic rod with one end fixed to the inner wall of the detection tube. The free end of the elastic telescopic rod is rotatably connected to the rotating shaft of the winding wheel. The elastic force of the elastic telescopic rod is greater than the total gravity of the active magnet and the pull rope, and the elastic force of the elastic telescopic rod is less than the total gravity of the active magnet and the passive magnet.

4. A high-precision hydrogen filter for a hydrogen station according to claim 1, characterized in that: The grabbing and recovering assembly includes an elastic hook fixed on the peripheral wall of the push-pull rod near one end of the reagent rod and a lever elastically hinged on the inner wall of the transparent tube. A hook groove matched with the elastic hook is provided at one end of the reagent rod near the push-pull rod. The diameter of the reagent rod at one side of the hook groove near the push-pull rod is smaller than the diameter of the other side. The hinge axis of the lever is located at the end of the lever away from the sealing tube. A receiving groove for accommodating the lever is provided in the transparent tube. When the hook groove of the reagent rod moves to the opposite side of the lever, the free end of the lever moves into the groove.

5. A high-precision hydrogen filter for a hydrogen station according to claim 1, characterized in that: A replacement port is provided on the detection tube, and the supply bin extends from the replacement port to the outside of the detection tube. The supply bin and the recovery bin are arranged on both sides of the transparent tube. The cross-sectional size of the recovery bin is not larger than the size of the replacement port. The supply bin and the detection tube are both fixedly connected with flanges at the replacement port.

6. A high-precision hydrogen filter for a hydrogen station according to claim 2, characterized in that: A filter paper is arranged on one side of the spiral blade facing the flow direction of the fluid.

7. A high-precision hydrogen filter for a hydrogen station according to claim 1, characterized in that: The detection tube is expanded at both ends of the spiral blade.

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