Leak-proof device for hydrogen conveying pipeline

Abstract

The utility model relates to the field of hydrogen conveying pipes, and discloses a leakage-proof device for a hydrogen conveying pipeline, which comprises two sections of hydrogen conveying outer pipes, the two sections of hydrogen conveying outer pipes are provided with flange connecting structures, a hydrogen sensor is arranged between the two sections of hydrogen conveying outer pipes, and check rings are fixedly connected in the two sections of hydrogen conveying outer pipes. Hydrogen conveying inner pipes are fixedly connected to the interiors of the check rings on the two sides, the ends, away from the check rings, of the hydrogen conveying inner pipes on the two sides abut against each other, a plurality of vent holes distributed in an annular array are formed in the check rings, the outer walls of the hydrogen conveying inner pipes are slidably sleeved with sliding barrels, and one sides of the sliding barrels are rotationally connected with adjusting rings; a rotating mechanism for driving the adjusting ring to rotate is arranged in the hydrogen conveying outer pipe, one end of the adjusting ring is fixedly connected with a plugging block arranged corresponding to the vent hole, and a moving mechanism for driving the sliding cylinder to slide is arranged on the hydrogen conveying outer pipe. Compared with the prior art, the leakage-proof device has the advantages that leakage-proof treatment can be carried out in time when the hydrogen conveying pipe leaks, and the hydrogen leakage danger is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen delivery pipe technical field, specifically is hydrogen delivery pipeline leak protection device. BACKGROUND

[0002] As a transparent colorless gas, hydrogen has the characteristics of high flammability, no irritating odor and very low water solubility, and the sealing performance of the pipeline is very high during transportation. In the conventional pipeline transportation system, hydrogen leakage usually comes from two situations: one is the structural damage of the pipeline body, and the other is the sealing device of the connecting part.

[0003] At present, the industry generally uses elastic sealing gasket as the core leak-proof component at the interface, but in the long-term use process, the gasket made of high molecular material will be affected by multiple factors and gradually age, which can easily lead to hydrogen leakage and form a major safety hazard. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the above technical difficulties and provide a hydrogen delivery pipeline leak protection device that can perform leak-proof treatment in time when the hydrogen delivery pipe leaks, greatly reducing the risk of hydrogen leakage.

[0005] To solve the above technical problems, the utility model provides a technical scheme: a hydrogen delivery pipeline leak protection device, comprising two hydrogen delivery outer pipes, the two hydrogen delivery outer pipes are provided with a flange connection structure, a hydrogen sensor is arranged between the hydrogen delivery outer pipes, a stop ring is fixedly connected in each of the two hydrogen delivery outer pipes, a hydrogen delivery inner pipe is fixedly connected in each of the two hydrogen delivery outer pipes, the hydrogen delivery inner pipes are arranged to abut against each other at the ends away from the stop rings, a plurality of air holes are arranged in an annular array on the stop ring, a sliding cylinder is slidably connected to the outer wall of the hydrogen delivery inner pipe, an adjusting ring is rotatably connected to one side of the sliding cylinder, a rotating mechanism is arranged in the hydrogen delivery outer pipe to drive the rotation of the adjusting ring, a plugging block corresponding to the air hole is fixedly connected to one end of the adjusting ring, and a moving mechanism is arranged on the hydrogen delivery outer pipe to drive the sliding of the sliding cylinder.

[0006] As an improvement, the moving mechanism comprises a rack fixedly connected to one side of the sliding cylinder, a gear rotatably connected to the hydrogen delivery outer pipe and engaged with the rack, a fixed frame fixedly connected to the outer wall of the hydrogen delivery outer pipe, and a motor fixedly connected to the fixed frame to drive the rotation of the gear.

[0007] As an improvement, the rotating mechanism comprises an adjusting slide column rotatably connected to one side of the adjusting ring, a turnover chute arranged on the inner wall of the hydrogen delivery outer pipe and matched with the adjusting slide column, and a directional sliding groove fixedly connected to one end of the turnover chute and arranged along the length direction of the hydrogen delivery inner pipe.

[0008] As improvement, the upper end of the adjusting slide column is fixedly connected with a ball.

[0009] As improvement, the hydrogen sensor is electrically connected with the two motors.

[0010] As improvement, the O-shaped sealing ring is fixedly connected with the hydrogen delivery inner tube at one end.

[0011] The hydrogen delivery outer tube in the two sections is connected with the hydrogen delivery inner tube through the air hole, and when the hydrogen sensor detects the hydrogen leakage, the moving mechanism and the rotating mechanism are started to drive the adjusting ring to overturn, so that the blocking block is aligned with the air hole and inserted into the air hole, so that the hydrogen cannot enter the pipeline connection, and can only be transported through the hydrogen delivery inner tube, effectively preventing the hydrogen leakage. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is an explosion view of the hydrogen delivery pipeline anti-leakage device.

[0013] Figure 2 is a structural schematic view of the hydrogen delivery pipeline anti-leakage device.

[0014] Figure 3 is a sectional view of the hydrogen delivery pipeline anti-leakage device.

[0015] Figure 4 is a structural schematic view of the hydrogen delivery inner tube of the hydrogen delivery pipeline anti-leakage device.

[0016] Figure 5 is a structural schematic view of the blocking block of the hydrogen delivery pipeline anti-leakage device.

[0017] Figure 6 is a sectional view of the hydrogen delivery outer tube of the hydrogen delivery pipeline anti-leakage device.

[0018] As shown in the figure: 1, hydrogen delivery outer tube; 2, hydrogen delivery inner tube; 3, baffle ring; 4, air hole; 5, blocking block; 6, sliding cylinder; 7, adjusting ring; 8, adjusting slide column; 9, rack; 10, gear; 11, motor; 12, hydrogen sensor; 13, fixed frame; 14, overturning chute; 15, centering sliding groove; 16, O-shaped sealing ring. DETAILED DESCRIPTION

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 5 As shown, a hydrogen delivery pipeline leak prevention device includes two hydrogen delivery outer pipes 1, which are provided with flange connection structures. A hydrogen sensor 12 is provided between the hydrogen delivery outer pipes 1. A retaining ring 3 is fixedly connected inside each of the two hydrogen delivery outer pipes 1. A hydrogen delivery inner pipe 2 is fixedly connected inside each of the retaining rings 3 on both sides. An O-ring 16 is fixedly connected to one end of each of the two hydrogen delivery inner pipes 2 on opposite sides. The ends of the two hydrogen delivery inner pipes 2 on both sides away from the retaining rings 3 abut against each other to enhance the sealing performance.

[0021] The retaining ring 3 has multiple vent holes 4 arranged in a circular array. A slide cylinder 6 is slidably sleeved on the outer wall of the inner hydrogen delivery pipe 2. A rack 9 is fixedly connected to one side of the slide cylinder 6. A gear 10 that meshes with the rack 9 is rotatably connected inside the outer hydrogen delivery pipe 1. A fixing frame 13 is fixedly connected to the outer wall of the outer hydrogen delivery pipe 1. A motor 11 that drives the gear 10 is fixedly connected to the fixing frame 13. The hydrogen sensor 12 is electrically connected to the motors 11 on both sides. An adjusting ring 7 is connected, and an adjusting slide column 8 is rotatably connected to one side of the adjusting ring 7. The inner wall of the hydrogen delivery outer pipe 1 is provided with a tilting groove 14 that cooperates with the adjusting slide column 8. One end of the tilting groove 14 is fixedly connected to a directional slide column arranged along the length direction of the hydrogen delivery inner pipe 2. A ball is fixedly connected to the upper end of the adjusting slide column 8. One end of the adjusting ring 7 is fixedly connected to a blocking block 5 arranged corresponding to the vent hole 4. Under normal hydrogen delivery conditions, the blocking block 5 and the vent hole 4 are staggered and do not affect the delivery of hydrogen.

[0022] In practical use, after hydrogen enters the hydrogen delivery outer pipe 1, it is transported through the vent hole 4 and the hydrogen delivery inner hole. When the flange connection structure between the two ends of the hydrogen delivery outer pipe 1 ages and leaks, the hydrogen sensor 12 detects the hydrogen leak and starts the motors 11 on both sides to drive the gears 10 on both sides to rotate. The gears 10 on both sides drive the racks 9 on both sides to move inside the hydrogen delivery outer pipe 1. The racks 9 push the slide cylinders 6 on both sides to drive the adjusting ring 7 to slide along the outer wall of the hydrogen delivery inner pipe 2 and move closer to the corresponding retaining ring 3. At the same time as the adjusting ring 7 moves closer to the retaining ring 3, it drives the adjusting slide column 8 to slide along the tilting groove 14. Under the limit of the tilting groove 14, the adjusting ring 7 rotates, so that the sealing block 5 is aligned with the vent hole 4. As the moving mechanism continues to push, the adjusting slide column 8 enters the directional slide groove, so that the sealing block 5 is inserted into the vent hole 4 and enters the sealing along with the retaining ring 3, so that the hydrogen cannot enter the flange connection and cannot leak further, so that the hydrogen can only be transported through the hydrogen delivery inner pipe 2.

[0023] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0026] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A hydrogen delivery pipeline leak-proof device, comprising two hydrogen delivery outer pipes (1) provided with flange connection structure, and a hydrogen sensor (12) arranged between the hydrogen delivery outer pipes (1), characterized in that: The two hydrogen delivery outer pipes (1) are fixedly connected with a check ring (3) inside, and a hydrogen delivery inner pipe (2) is fixedly connected inside the check ring (3) on both sides, the hydrogen delivery inner pipes (2) on both sides are in abutment with each other at the ends away from the check ring (3), a plurality of air holes (4) are arranged in an annular array on the check ring (3), a sliding cylinder (6) is slidably sleeved on the outer wall of the hydrogen delivery inner pipe (2), an adjusting ring (7) is rotatably connected to one side of the sliding cylinder (6), a rotating mechanism is arranged in the hydrogen delivery outer pipe (1) to drive the adjusting ring (7) to rotate, a plugging block (5) is fixedly connected to one end of the adjusting ring (7) and arranged corresponding to the air hole (4), and a moving mechanism is arranged on the hydrogen delivery outer pipe (1) to drive the sliding cylinder (6) to slide.

2. A leak prevention device for a hydrogen delivery conduit as defined in claim 1, wherein: The moving mechanism comprises a rack (9) fixedly connected to one side of the sliding cylinder (6), a gear (10) rotatably connected in the hydrogen delivery outer pipe (1) and engaged with the rack (9), a fixed frame (13) fixedly connected to the outer wall of the hydrogen delivery outer pipe (1), and a motor (11) fixedly connected to the fixed frame (13) to drive the gear (10) to rotate.

3. The hydrogen delivery conduit leak prevention device of claim 2, wherein: The rotating mechanism comprises an adjusting slide column (8) rotatably connected to one side of the adjusting ring (7), a turnover chute (14) arranged in the inner wall of the hydrogen delivery outer pipe (1) and matched with the adjusting slide column (8), and a directional sliding groove fixedly connected to one end of the turnover chute (14) and arranged along the length direction of the hydrogen delivery inner pipe (2).

4. The apparatus according to claim 3, wherein: A ball bearing is fixedly connected to the upper end of the adjusting slide column (8).

5. The apparatus according to claim 1, wherein: The hydrogen sensor (12) is electrically connected with the motors (11) on both sides.

6. The apparatus according to claim 1, wherein: O-shaped sealing rings (16) are fixedly connected to the opposite ends of the hydrogen delivery inner pipes (2) on both sides.

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