Hydrogen buffer tank of fuel cell engine

Abstract

The utility model discloses a hydrogen buffer tank of a fuel cell engine, and relates to the technical field of engines. The hydrogen buffer tank comprises a hydrogen buffer tank body, the hydrogen buffer tank body comprises a tank body, a hydrogen separation membrane is arranged on the left side in the tank body, fan blades are arranged on the left side of the hydrogen separation membrane, a rotating rod is fixed to the middle of the right wall of the fan blades, a mounting strip is fixed to the right end of the rotating rod, and bristles are fixed to the right wall of the mounting strip. And the bristles are in contact with the hydrogen separation membrane. According to the device, the bristles rotate through the fan blades to clean the surface of the hydrogen separation membrane, frequent manual cleaning of the surface of the hydrogen separation membrane is not needed, damping of the tank body is achieved through cooperation of the damping sleeve, the elastic piece, the buffer spring and the damper, and the stability of the tank body is better when the device is used.

Description

Technical Field

[0001] The utility model belongs to the technical field of engines, and particularly relates to a hydrogen buffer tank for a fuel cell engine. Background Technique

[0002] A fuel cell engine is a technology that directly converts fuel (usually hydrogen) into electrical energy through a chemical reaction, rather than through a combustion process. Different from traditional internal combustion engines, a fuel cell engine does not involve combustion, but generates electricity through an electrochemical reaction, and is usually used to drive an electric motor. In a fuel cell system, a hydrogen buffer tank is required to achieve a stable supply of hydrogen to ensure the stability and safety of the supplied hydrogen.

[0003] After retrieval, the authorized announcement number is CN211946254U, and the authorized announcement date is November 17, 2020, which discloses a new type of hydrogen buffer tank, including a tank body, an air inlet device and a shock absorption device. The tank body includes a buffer outer tank and a buffer inner tank. An air inlet device is installed at the upper end of the tank body, and a shock absorption device is fixedly installed at the lower end of the tank body. A first pressure gauge is installed on the end face of the tank body. The air inlet device includes an air delivery pipeline, a first air valve, a gas buffer and a pressure regulating valve. This utility model has the advantages of simple structure, convenient use and high safety.

[0004] The prior art filters impurities in hydrogen through a hydrogen separation membrane. However, in actual use, in order to avoid clogging of the filtration amount of the hydrogen separation membrane by impurities, it is necessary to manually clean the hydrogen separation membrane frequently, and the operation is rather troublesome. In addition, the prior art uses a rubber airbag to achieve shock absorption and buffering of the tank body. However, in actual use, the rubber airbag has poor support, resulting in a tendency to tilt easily and poor stability. Therefore, we provide a hydrogen buffer tank for a fuel cell engine to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a hydrogen buffer tank for a fuel cell engine, which uses a fan blade to rotate the brush bristles to clean the surface of the hydrogen separation membrane, eliminating the need for frequent manual cleaning of the surface of the hydrogen separation membrane. In addition, through the cooperation of a damping sleeve, an elastic member, a buffer spring and a damper, the shock absorption of the tank body is realized, and the stability of the tank body during use is better. This solves the problems in the prior art that it is necessary to manually clean the hydrogen separation membrane frequently, the operation is rather troublesome, and the rubber airbag in the prior art has poor support, resulting in a tendency to tilt easily and poor stability.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] The utility model relates to a hydrogen buffer tank for a fuel cell engine, which comprises a hydrogen buffer tank body. The hydrogen buffer tank body includes a tank body. A hydrogen separation membrane is arranged on the left side inside the tank body. A fan blade is arranged to the left of the hydrogen separation membrane. A rotating rod is fixed at the middle position of the right wall of the fan blade. The right end of the rotating rod is fixed with a mounting strip. A brush is fixed on the right wall of the mounting strip, and the brush is in contact with the hydrogen separation membrane;

[0008] A damping mechanism is arranged below the hydrogen buffer tank body. The damping mechanism includes a mounting box. A mounting box is arranged on the lower wall inside the mounting box. Damping devices are fixed on the left and right side walls and the front and rear side walls of the mounting box. A buffer spring is arranged outside the damping device. Mounting sleeves are symmetrically fixed on the front and rear sides of the upper wall of the mounting box in the left-right direction. A damping sleeve is fixed inside the mounting sleeve. An elastic member is arranged inside the damping sleeve. The upper end of the elastic member is provided with a support leg.

[0009] The utility model is further arranged such that an air outlet pipe is fixed on the right wall of the tank body. A tank cover is arranged to the left of the tank body. An air inlet pipe is fixed on the surface of the tank cover.

[0010] The utility model is further arranged such that a plurality of bolts are arranged in a circumferential array at the edge of the tank cover, and the tank cover is fixedly connected to the tank body through the bolts. A sealing gasket is arranged between the tank cover and the tank body.

[0011] The utility model is further arranged such that mounting rings are arranged at the edges of the left and right side walls of the hydrogen separation membrane. A screw is arranged on the mounting ring on the left side, and the mounting ring is fixedly connected to the other mounting ring through the screw. A retaining ring is fixed to the inner wall of the tank body corresponding to the right side of the mounting ring on the right side.

[0012] The utility model is further arranged such that a mounting plate is fixed on the left wall of the mounting ring on the left side. A bearing is fixed on the outside of the rotating rod, and the rotating rod is rotatably connected to the mounting plate through the bearing. Support rods are fixedly arranged in a circumferential array on the mounting ring on the left side, and the left ends of the support rods are in contact with the tank cover.

[0013] The utility model is further arranged such that the outer end of the damping device is fixedly connected to the mounting box. An abutting plate is fixed to the inner end of the damping device, and the abutting plate is in contact with the mounting box. Protrusions are fixed on the mounting box corresponding to the upper and lower walls of the abutting plate.

[0014] The present utility model is further configured such that the upper end of the support leg is fixedly connected to the tank body, and the support leg is in interference fit with the damping sleeve. A protrusion is fixedly provided on the outer peripheral wall of the lower end of the support leg. At the position where the protrusion is located, a rectangular groove and a through groove are respectively provided on the damping sleeve and the mounting sleeve. The lower end of the elastic member abuts against the mounting box.

[0015] The present utility model has the following beneficial effects:

[0016] By providing a fan blade and bristles, the airflow entering the tank body through the air inlet pipe impacts the fan blade, driving the fan blade to rotate, causing the rotating rod and the mounting strip to rotate. Since the bristles are fixedly connected to the mounting strip and are in contact with the hydrogen separation membrane at the same time, the surface of the hydrogen separation membrane can be cleaned when the bristles rotate, driving the impurities on the surface of the hydrogen separation membrane to separate from the hydrogen separation membrane, thereby achieving the purpose of cleaning the hydrogen separation membrane. Compared with the prior art, there is no need for manual and frequent impurity cleaning of the hydrogen separation membrane, and the operation is simpler, solving the problem that the prior art requires manual and frequent cleaning of the hydrogen separation membrane, which is rather troublesome.

[0017] By providing a damping sleeve, an elastic member, a support leg, a damper and a buffer spring, the damping sleeve provides a damping effect for the up and down movement of the support leg, and the elastic member provides a buffering and shock-absorbing effect in the up and down direction for the tank body. At the same time, the damper and the buffer spring provide a buffering and shock-absorbing effect in the horizontal direction for the tank body. Compared with the prior art, while providing an effective shock-absorbing and buffering effect for the tank body, the tank body has better stability during use, solving the problem that the supportability of the rubber airbag in the prior art is poor, resulting in a situation of easy inclination and poor stability.

[0018] Of course, it is not necessary for any product implementing the present utility model to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is an overall structure diagram of a hydrogen buffer tank of a fuel cell engine.

[0021] Figure 2 It is an internal structure diagram of the hydrogen buffer tank body.

[0022] Figure 3 It is Figure 2Partial structural diagram in

[0023] Figure 4 is Figure 3 Exploded view of partial structure in

[0024] Figure 5 It is a right view structural diagram of a hydrogen buffer tank of a fuel cell engine.

[0025] Figure 6 is Figure 5 Partial structural diagram in

[0026] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0027] 1 - Hydrogen buffer tank body, 101 - Tank body, 101a - Air outlet pipe, 101b - Retaining ring, 102 - Tank cover, 102a - Bolt, 102b - Inlet pipe, 102c - Gasket, 103 - Mounting ring, 103a - Support rod, 103b - Mounting plate, 104 - Fan blade, 104a - Rotating rod, 105 - Mounting strip, 105a - Brush bristles, 106 - Hydrogen separation membrane, 107 - Screw, 2 - Shock absorption mechanism, 201 - Leg, 201a - Projection, 202 - Damping sleeve, 202a - Rectangular groove, 203 - Mounting sleeve, 203a - Through groove, 204 - Mounting box, 205 - Damper, 205a - Buffer spring, 205b - Contact plate, 206 - Mounting box, 206a - Boss, 207 - Elastic member. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0029] Example 1, please refer to Figures 1-4 , the present utility model is a hydrogen buffer tank of a fuel cell engine, including a hydrogen buffer tank body 1. The hydrogen buffer tank body 1 includes a tank body 101. A hydrogen separation membrane 106 is arranged on the left side inside the tank body 101 for filtering impurities in hydrogen. A fan blade 104 is arranged to the left of the hydrogen separation membrane 106. A rotating rod 104a is fixed at the middle position of the right wall of the fan blade 104. An installation strip 105 is fixed at the right end of the rotating rod 104a. Brush bristles 105a are fixed on the right wall of the installation strip 105, and the brush bristles 105a are in contact with the hydrogen separation membrane 106. By the hydrogen entering the tank body 101 impacting the fan blade 104, the brush bristles 105a can be rotated to clean the surface of the hydrogen separation membrane 106;

[0030] Specifically, an air outlet pipe 101a is fixed to the right wall of the tank body 101. A tank cover 102 is arranged to the left of the tank body 101. An air inlet pipe 102b is fixed to the surface of the tank cover 102. Hydrogen enters the tank body 101 through the air inlet pipe 102b and is discharged from the tank body 101 through the air outlet pipe 101a;

[0031] A number of bolts 102a are arranged in a circumferential array along the edge of the tank cover 102, and the tank cover 102 is fixedly connected to the tank body 101 through the bolts 102a. The tank cover 102 is fixed to the tank body 101 through the bolts 102a, so that the tank cover 102 is easy to disassemble, facilitating the replacement of the hydrogen separation membrane 106. A gasket 102c is arranged between the tank cover 102 and the tank body 101 to prevent hydrogen leakage between the tank body 101 and the tank cover 102;

[0032] Installation rings 103 are arranged along the edges of the side walls on both the left and right sides of the hydrogen separation membrane 106. A screw 107 is arranged on the installation ring 103 on the left side, and the installation ring 103 is fixedly connected to the other installation ring 103 through the screw 107. The shape of the hydrogen separation membrane 106 is fixed by the two installation rings 103. The two installation rings 103 can be relatively fixed or separated by using the screw 107 to realize the disassembly and assembly operation of the hydrogen separation membrane 106. A retaining ring 101b is fixed to the inner wall of the tank body 101 corresponding to the right side of the installation ring 103 on the right side. In the use state, the retaining ring 101b abuts against the installation ring 103 on the right side;

[0033] An installation plate 103b is fixed to the left wall of the installation ring 103 on the left side. A bearing is fixed to the outer part of the rotating rod 104a, and the rotating rod 104a is rotatably connected to the installation plate 103b through the bearing. When the fan blade 104 is impacted by air flow, the fan blade 104 rotates under the action of the bearing. Support rods 103a are fixedly arranged in a circumferential array on the installation ring 103 on the left side, and the left ends of the support rods 103a abut against the tank cover 102, making the positions of the installation ring 103 and the tank body 101 relatively fixed;

[0034] The operation process of this embodiment is as follows: After hydrogen enters the interior of the tank body 101 through the air inlet pipe 102b, it acts on the surface of the fan blade 104, causing the fan blade 104 to rotate and drive the rotating rod 104a, the installation strip 105 and the brush hair 105a to rotate. When the brush hair 105a rotates, the surface of the hydrogen separation membrane 106 is cleaned of impurities;

[0035] When replacing the hydrogen separation membrane 106, first remove the bolts 102a and take off the tank cover 102, then remove the mounting plate 103b to disengage the hydrogen separation membrane 106 from the interior of the tank body 101. At this time, remove the screw 107 to take off the hydrogen separation membrane 106. After placing the new hydrogen separation membrane 106 between the two mounting rings 103, operate the screw 107 to relatively fix the two mounting rings 103. Place the mounting ring 103 into the tank body 101, and operate the bolt 102a to fix the tank cover 102 to the tank body 101. At this time, when the support rod 103a abuts against the tank cover 102, the installation of the hydrogen separation membrane 106 is completed.

[0036] Example 2, please refer to Figure 1 、 5 and 6, which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, but different from the first embodiment is that a shock absorption mechanism 2 is provided below the hydrogen buffer tank body 1. The shock absorption mechanism 2 includes an installation box 204 with an open upper side. The lower wall inside the installation box 204 is provided with an installation box 206, and the installation box 206 can move relative to the installation box 204. At the same time, the interior of the installation box 206 is hollow to reduce its own weight and save production materials. Damping devices 205 are fixed on the left and right side walls and the front and rear side walls of the installation box 206. A buffer spring 205a is arranged outside the damping device 205. The cooperation of the damping device 205 and the buffer spring 205a can achieve buffering and shock absorption of the tank body 101 in the horizontal direction. On the front and rear sides of the upper wall of the installation box 206, mounting sleeves 203 are symmetrically fixed left and right. A damping sleeve 202 is fixed inside the mounting sleeve 203, and an elastic member 207 is arranged inside the damping sleeve 202. The upper end of the elastic member 207 is provided with a support leg 201. The cooperation of the support leg 201, the damping sleeve 202 and the elastic member 207 realizes buffering and shock absorption of the tank body 101 in the up and down directions;

[0037] Specifically, the outer end of the damping device 205 is fixedly connected to the installation box 204, and a resisting plate 205b is fixed at the inner end of the damping device 205. The installation box 206 is slidably connected to the resisting plate 205b, so that the installation box 206 can move relative to the installation box 204, and the resisting plate 205b abuts against the installation box 206. Protrusions 206a are fixed on the installation box 206 corresponding to the upper and lower walls of the resisting plate 205b, which can limit the resisting plate 205b to prevent the installation box 206 from moving relatively up and down with respect to the installation box 204;

[0038] The upper end of the outrigger 201 is fixedly connected to the tank body 101, and the outrigger 201 is in interference fit with the damping sleeve 202, so that the cooperation between the damping sleeve 202 and the outrigger 201 provides a damping effect. A protrusion 201a is fixed on the outer peripheral wall of the lower end of the outrigger 201. At the position where the protrusion 201a is located, a rectangular groove 202a and a through groove 203a are respectively formed on the damping sleeve 202 and the mounting sleeve 203. The protrusion 201a is always located in the rectangular groove 202a and the through groove 203a and moves up and down, which can prevent the outrigger 201 from separating from the damping sleeve 202. The lower end of the elastic member 207 abuts against the mounting box 206;

[0039] The rest of the structure is the same as that of Embodiment 1;

[0040] The operation process of this embodiment is as follows: In the use state, the cooperation between the damping sleeve 202 and the outrigger 201 provides a damping effect, and the elastic member 207 provides buffering and shock absorption in the up and down directions for the tank body 101. Through the damper 205 and the buffer spring 205a, a shock absorption and buffering effect in the horizontal direction is provided for the tank body 101. Since the mounting box 206 can only move in the horizontal direction and the tank body 101 can only move up and down, the tank body 101 will not tilt during use, and the use stability is better.

[0041] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A hydrogen buffer tank for a fuel cell engine, comprising a hydrogen buffer tank body (1), characterized in that: The hydrogen buffer tank body (1) includes a tank body (101). A hydrogen separation membrane (106) is arranged on the left side inside the tank body (101). A fan blade (104) is arranged to the left of the hydrogen separation membrane (106). A rotating rod (104a) is fixed at the middle position of the right wall of the fan blade (104). An installation strip (105) is fixed at the right end of the rotating rod (104a). A brush hair (105a) is fixed on the right wall of the installation strip (105), and the brush hair (105a) is in contact with the hydrogen separation membrane (106). A shock absorption mechanism (2) is arranged below the hydrogen buffer tank body (1). The shock absorption mechanism (2) includes an installation box (204). An installation box (206) is arranged on the lower wall inside the installation box (204). Damping devices (205) are fixed on the left and right side walls and the front and rear side walls of the installation box (206). A buffer spring (205a) is arranged outside the damping device (205). Installation sleeves (203) are symmetrically fixed in the left and right directions on the front and rear sides of the upper wall of the installation box (206). A damping sleeve (202) is fixed inside the installation sleeve (203). An elastic member (207) is arranged inside the damping sleeve (202). A support leg (201) is arranged at the upper end of the elastic member (207).

2. The hydrogen buffer tank of a fuel cell engine according to claim 1, characterized in that: An air outlet pipe (101a) is fixed on the right wall of the tank body (101). A tank cover (102) is arranged to the left of the tank body (101). An air inlet pipe (102b) is fixed on the surface of the tank cover (102).

3. The hydrogen buffer tank of a fuel cell engine according to claim 2, characterized in that: A number of bolts (102a) are arranged in a circumferential array at the edge of the tank cover (102), and the tank cover (102) is fixedly connected to the tank body (101) through the bolts (102a). A sealing gasket (102c) is arranged between the tank cover (102) and the tank body (101).

4. A hydrogen buffer tank of a fuel cell engine according to claim 3, characterized in that: Installation rings (103) are arranged at the edges of the left and right side walls of the hydrogen separation membrane (106). A screw (107) is arranged on the installation ring (103) on the left side, and the installation ring (103) is fixedly connected to the other installation ring (103) through the screw (107). A retaining ring (101b) is fixed to the inner wall of the tank body (101) corresponding to the right side of the installation ring (103) on the right side.

5. A hydrogen buffer tank of a fuel cell engine according to claim 4, characterized in that: An installation plate (103b) is fixed on the left wall of the installation ring (103) on the left side. A bearing is fixed on the outside of the rotating rod (104a), and the rotating rod (104a) is rotatably connected to the installation plate (103b) through the bearing. Support rods (103a) are fixedly arranged in a circumferential array on the installation ring (103) on the left side, and the left ends of the support rods (103a) are in contact with the tank cover (102).

6. The hydrogen buffer tank of a fuel cell engine according to claim 1, characterized in that: The outer end of the damper (205) is fixedly connected to the mounting box (204). A resisting plate (205b) is fixed to the inner end of the damper (205), and the resisting plate (205b) abuts against the mounting box (206). Protrusions (206a) are fixed to the mounting box (206) corresponding to the upper wall and the lower wall of the resisting plate (205b).

7. A hydrogen buffer tank for a fuel cell engine according to claim 1, characterized in that: The upper end of the leg (201) is fixedly connected to the tank body (101), and the leg (201) is in interference fit with the damping sleeve (202). A protrusion (201a) is fixed to the outer peripheral wall of the lower end of the leg (201). Rectangular grooves (202a) and through grooves (203a) are respectively formed in the damping sleeve (202) and the mounting sleeve (203) at the position where the protrusion (201a) is located. The lower end of the elastic member (207) abuts against the mounting box (206).

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