CN221173754U - A hydrogen pipeline life test device - Google Patents

Abstract

The utility model discloses a hydrogen pipeline life test device, comprising a frame, wherein a plurality of lifting support mechanisms for supporting the hydrogen pipeline are installed at the inner bottom of the frame, and support components movable in the horizontal direction are installed at both ends of the frame; when testing the life of the hydrogen pipeline, the utility model places the hydrogen pipeline on the lifting support mechanism, and then drives the plug to move relatively by the support component to seal the two ends of the hydrogen pipeline, and then drives two transparent covers to move relatively by a transmission mechanism, wraps the hydrogen pipeline inside the transparent cover, and connects gas through an air pipe joint, and the gas can be a colored gas, and whether the colored gas overflows from the transparent cover is observed by naked eyes, thereby improving the convenience of personnel observation, and at the same time, a wind speed detection mechanism is used to detect whether there is gas overflow from the transparent cover, and dual detection by automatic recognition and manual naked eye recognition is performed to improve the accuracy of hydrogen pipeline life detection.

Description

A hydrogen pipeline life test device

Technical Field

The utility model relates to the technical field of pipeline testing equipment, in particular to a hydrogen transmission pipeline life testing device.

Background technique

Hydrogen pipelines are essential transmission channels for hydrogen refueling stations. Due to the small molecular size and high permeability of hydrogen, hydrogen pipelines need to use special materials and designs such as steel pipelines, composite sheet pipelines, high-density polyethylene pipelines or aluminum pipelines to ensure safe and reliable transportation. In order to improve the safety of hydrogen pipelines in later use, it is necessary to conduct life testing on hydrogen pipelines during production. The test method is generally to inject hydrogen into the pipeline and increase the pressure to test whether the pipeline can withstand the required pressure.

After searching, the Chinese patent document application number is 202222188859.2, which discloses a pressure resistance performance test device for drainage pipes, including a test cabinet and a first electric push rod, the upper end of the first electric push rod is provided with a placement seat, and the outer wall of the test cabinet is provided with a protective mechanism extending to the inside of the test cabinet; the protective mechanism includes a gas transmission seat, a sealing seat, a protective cover, a connecting seat, a first displacement seat, a rotating arm and a second displacement seat. The utility model avoids safety problems caused by pipeline rupture by setting a protective mechanism. The placement seat squeezes the second displacement seat, the rotating arm moves the first displacement seat, the two protective covers are separated, the sealing seat clamps and fixes the pipeline, the placement seat releases the squeezing of the second displacement seat, the two first displacement seats approach each other, the square block releases the push on the protective cover, and the two protective covers contact and cover the pipeline, thereby avoiding safety problems caused by pipeline rupture.

However, the above-mentioned pressure resistance performance testing device still has the following defects:

When the above device is used for hydrogen pipeline life detection, it is blocked by the protective cover. When gas leakage occurs in the pipeline, it is not convenient for personnel to intuitively confirm the results, which affects the accuracy of the test. Therefore, we need to propose a hydrogen pipeline life test device to solve the above problems.

Utility Model Content

The purpose of the utility model is to provide a hydrogen pipeline life test device. When the hydrogen pipeline life is detected, whether there is colored gas overflowing from the transparent cover is observed by naked eyes, so as to improve the convenience of personnel observation. At the same time, a wind speed detection mechanism is used to detect whether there is gas overflowing from the transparent cover. Through the dual detection of automatic recognition and manual naked eye recognition, the accuracy of hydrogen pipeline life detection is improved to solve the problems raised in the background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydrogen pipeline life test device, comprising a frame, a plurality of lifting support mechanisms for supporting the hydrogen pipeline are installed on the inner bottom of the frame, support components that can move in the horizontal direction are installed at both ends of the frame, plug blocks for sealing and plugging the two ends of the hydrogen pipeline are installed on the support components, pressure detection sensors are installed on the plug blocks, one of the plug blocks is also equipped with an air pipe joint for connecting with a gas source and introducing gas into the hydrogen pipeline, two semicircular transparent covers are arranged between the two plug blocks, the two transparent covers are connected to the frame by a transmission mechanism that can drive the transparent covers to move relative to each other, and the two transparent covers are combined to form a cylindrical structure, a wind speed detection mechanism that can monitor whether the hydrogen pipeline is leaking is arranged in the transparent cover, and gaps for the hydrogen pipeline to pass through are opened at both ends of the transparent cover.

Preferably, the support assembly includes two vertical plates and a support rod, a first electric push rod is fixed to the upper end of one side of the two vertical plates, the piston rod ends of the two first electric push rods are respectively fixed to the two ends of the support rod, and the block is fixed to the middle of the support rod.

Preferably, each of the lifting support mechanisms comprises a second electric push rod and a support block, the second electric push rod is fixed to the inner bottom of the frame, the support block is fixed to the piston rod end of the second electric push rod, and the plurality of lifting support mechanisms are equidistantly arranged.

Preferably, an arc-shaped recess for limiting the position of the hydrogen transmission pipeline is provided on the upper surface of the support block, a plurality of arc-shaped recesses of the support blocks are arranged in alignment, and the upper corner of the support block is arranged as an arc angle.

Preferably, the transmission mechanism includes two bidirectional screws, two moving blocks are fixed to the lower end of the transparent cover, the two moving blocks on the two transparent covers are respectively threadedly connected to the two ends of the bidirectional screw, and one end of the bidirectional screw passes through the side wall of the frame and is connected to a drive motor.

Preferably, a protrusion is fixed on one side of one of the transparent covers, and a slot for inserting one end of the protrusion is opened on one side of the other transparent cover. When the protrusion is inserted into the slot, the arc-shaped recess of the support block is located inside the transparent cover, and the two transparent covers are provided with a clearance opening for the support block to enter.

Preferably, the wind speed detection mechanism comprises a plurality of wind measuring cloth strips and a plurality of wind speed sensors, the plurality of wind speed sensors are evenly distributed inside the transparent cover, and the wind measuring cloth strips are equidistantly fixed on the inner top of the transparent cover.

Compared with the prior art, the beneficial effects of the utility model are:

1. The utility model cooperates with the lifting support mechanism and the support assembly. When the life of the hydrogen pipeline is detected, the hydrogen pipeline is placed on the lifting support mechanism, and the support assembly drives the plug to move relatively to seal the two ends of the hydrogen pipeline. The transmission mechanism drives the two transparent covers to move relatively to wrap the hydrogen pipeline inside the transparent cover, and the gas is connected through the air pipe joint. The gas can be a colored gas. Whether there is colored gas overflowing from the transparent cover can be observed by the naked eye, which improves the convenience of observation for personnel. At the same time, the wind speed detection mechanism is used to detect whether there is gas overflowing from the transparent cover. Through automatic recognition and manual naked eye recognition, dual detection is performed to improve the accuracy of hydrogen pipeline life detection.

2. The utility model provides a pressure detection sensor on the plug block, which facilitates real-time observation of the internal pressure value after gas is introduced into the hydrogen pipeline, so as to improve the accuracy of the pressure test on the hydrogen pipeline.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of the utility model when it is not detected;

FIG2 is a schematic diagram of the structure of the interior of the transparent cover, the lifting support mechanism and the transmission mechanism of the utility model;

Figure 3 is a schematic diagram of the structure of the support assembly of the utility model;

FIG4 is a schematic diagram of the structure of the utility model during detection.

In the figure: 1. frame; 2. transparent cover; 3. drive motor; 4. support assembly; 401. vertical plate; 402. first electric push rod; 403. support rod; 5. air pipe joint; 6. plug block; 7. lifting support mechanism; 701. second electric push rod; 702. support block; 703. arc-shaped notch; 8. pressure detection sensor; 9. transmission mechanism; 901. bidirectional screw; 902. moving block; 10. wind measuring cloth strip; 11. wind speed sensor; 12. notch; 13. clearance opening; 14. protrusion.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1-4. The utility model provides a technical solution: a hydrogen pipeline life test device, including a frame 1, a plurality of lifting support mechanisms 7 for supporting the hydrogen pipeline are installed at the inner bottom of the frame 1, and support components 4 that can move horizontally are installed at both ends of the frame 1. A plug 6 for sealing and plugging the two ends of the hydrogen pipeline is installed on the support component 4. The cross-section of the plug 6 is set in a trapezoidal shape, and a rubber plug can be used to facilitate plugging the plug 6 into the two ends of the hydrogen pipeline to seal the two ends of the hydrogen pipeline. A pressure detection sensor 8 is installed on the plug 6, and the pressure detection sensor 8 is used to observe the pressure in real time. In order to observe the internal pressure value after the gas is introduced into the hydrogen pipeline, so as to improve the accuracy of the pressure test on the hydrogen pipeline, one of the plug blocks 6 is also equipped with a gas pipe joint 5 for connecting with the gas source and introducing gas into the hydrogen pipeline, and two semicircular transparent covers 2 are arranged between the two plug blocks 6. The two transparent covers 2 are connected to the frame 1 through a transmission mechanism 9 that can drive the transparent covers 2 to move relative to each other, and the two transparent covers 2 are combined to form a cylindrical structure. A wind speed detection mechanism that can monitor whether the hydrogen pipeline is leaking is arranged in the transparent cover 2, and a gap 12 for the hydrogen pipeline to pass through is opened at both ends of the transparent cover 2.

During the life detection of the hydrogen pipeline, the hydrogen pipeline is placed on the lifting support mechanism 7, and then the support assembly 4 drives the plug 6 to move relatively, so that the plug 6 is inserted into the two ends of the hydrogen pipeline to seal the two ends of the hydrogen pipeline. The transmission mechanism 9 is then used to drive the two transparent covers 2 to move relatively, and the hydrogen pipeline is wrapped inside the transparent cover 2. Gas is connected through the air pipe joint 5. The gas can be a colored gas. Whether there is colored gas overflowing from the transparent cover 2 is observed by the naked eye, which improves the convenience of personnel observation. At the same time, the wind speed detection mechanism is used to detect whether there is gas overflowing from the transparent cover 2. Through the dual detection of automatic recognition and manual naked eye recognition, the accuracy of the pressure resistance life detection of the hydrogen pipeline is improved.

The support assembly 4 includes two vertical plates 401 and a support rod 403. A first electric push rod 402 is fixed to the upper end of one side of the two vertical plates 401. The piston rod ends of the two first electric push rods 402 are respectively fixed to the two ends of the support rod 403. The plug 6 is fixed to the middle of the support rod 403. The lifting support mechanism 7 is located below the plug 6 when it is not lifted, so that the distance between the plug 6 and the support block 702 is sufficient for the hydrogen pipeline to be inserted. The plug 6 is driven by the first electric push rod 402 to move horizontally, so that the plug 6 can be inserted into the end of the hydrogen pipeline or taken out from the inside of the hydrogen pipeline.

Each lifting support mechanism 7 includes a second electric push rod 701 and a support block 702. The second electric push rod 701 is fixed to the inner bottom of the frame 1, and the support block 702 is fixed to the piston rod end of the second electric push rod 701. Multiple lifting support mechanisms 7 are equidistantly arranged. The second electric push rod 701 drives the support block 702 to move upward, so that the support block 702 drives the supported hydrogen pipeline to rise or fall. When rising, the hydrogen pipeline can be placed between the two transparent covers 2. When descending, the hydrogen pipeline is placed under the plug block 6 to facilitate the hydrogen pipeline to be pulled out from the support block 702.

The upper surface of the support block 702 is provided with an arc-shaped recess 703 for limiting the position of the hydrogen pipeline. The arc-shaped recesses 703 of multiple support blocks 702 are aligned, and the upper corner of the support block 702 is set as an arc angle. The arc-shaped recess 703 is used to limit the position of the hydrogen pipeline when supporting it, thereby reducing the probability of the hydrogen pipeline sliding when rising or falling.

The transmission mechanism 9 includes two bidirectional screws 901, and two moving blocks 902 are fixed to the lower end of the transparent cover 2. The two moving blocks 902 on the two transparent covers 2 are respectively threadedly connected to the two ends of the bidirectional screws 901, and one end of the bidirectional screws 901 passes through the side wall of the frame 1 and is connected to a driving motor 3. The bidirectional screws 901 are driven to rotate by the driving motor 3, so that the bidirectional screws 901 drive the two moving blocks 902 to move relative to each other. The two bidirectional screws 901 operate synchronously, and the transparent covers 2 are driven to move relative to each other by the movement of the moving blocks 902, so as to facilitate the combination or separation of the two transparent covers 2. When combining, the hydrogen pipeline is wrapped inside the cylindrical structure to observe the changes in the gas inside the cylindrical structure. When separating, it is convenient to move the hydrogen pipeline out of the two transparent covers 2.

A protrusion 14 is fixed on one side of one of the transparent covers 2, and a slot is provided on one side of the other transparent cover 2 for inserting one end of the protrusion 14. When the protrusion 14 is inserted into the slot, the arc-shaped recess 703 of the support block 702 is located inside the transparent cover 2, and a clearance opening 13 is provided on the two transparent covers 2 for the support block 702 to enter. The cooperation between the protrusion 14 and the slot can improve the tightness of the combination of the two transparent covers 2.

The wind speed detection mechanism includes a plurality of wind measuring strips 10 and a plurality of wind speed sensors 11. The plurality of wind speed sensors 11 are evenly distributed inside the transparent cover 2. The wind measuring strips 10 are equidistantly fixed on the inner top of the transparent cover 2. When gas overflows from the cylindrical structure, the wind measuring strips 10 will be blown to swing. If there is no gas overflow, the wind measuring strips 10 will remain stationary, so as to improve the accuracy of naked eye identification of hydrogen pipeline pressure detection. In addition, a plurality of wind speed sensors 11 are used to monitor whether there is air leakage in the hydrogen pipeline during the pressure resistance life test at different positions, and the detection results are transmitted to the control system of the life test device, so as to realize automatic judgment of the result of the hydrogen pipeline pressure resistance test.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a hydrogen pipeline life-span testing arrangement, includes frame (1), its characterized in that: the utility model discloses a hydrogen transportation pipeline, including frame (1), support subassembly (4) that can be used for installing a plurality of lift supporting mechanism (7) that are used for supporting hydrogen transportation pipeline in the interior bottom of frame (1), but support subassembly (4) are installed at both ends of frame (1), but install on support subassembly (4) with the chock (6) that connect the sealing plug at hydrogen transportation pipeline both ends, install pressure detection sensor (8) on chock (6), still install on one chock (6) and supply with the air feed intercommunication and to the inside air pipe connection (5) that lets in of hydrogen transportation pipeline, two be provided with two semicircular translucent covers (2) between chock (6), two translucent covers (2) are connected with frame (1) through drive transmission mechanism (9) that can drive translucent cover (2) relative movement, and two constitute cylindrical structure after translucent cover (2) combine, but be provided with the wind speed detection mechanism that monitors whether hydrogen transportation pipeline leaks out in translucent cover (2), breach (12) have all been offered at the both ends of translucent cover (2) and supplied hydrogen transportation pipeline to pass.

2. The hydrogen pipeline life testing device according to claim 1, wherein: the support assembly (4) comprises two vertical plates (401) and a support rod (403), a first electric push rod (402) is fixed at the upper end of one side of each vertical plate (401), piston rod ends of the two first electric push rods (402) are respectively fixed at two ends of the support rod (403), and the plug block (6) is fixed in the middle of the support rod (403).

3. The hydrogen pipeline life testing device according to claim 1, wherein: every elevating support mechanism (7) all includes second electric putter (701) and supporting shoe (702), second electric putter (701) are fixed in the interior bottom of frame (1), supporting shoe (702) are fixed in the piston rod end of second electric putter (701), a plurality of elevating support mechanism (7) are the equidistance setting.

4. A hydrogen pipeline life testing device according to claim 3, wherein: the upper surface of supporting shoe (702) is provided with arc notch (703) that supplies the hydrogen pipeline spacing, a plurality of arc notch (703) of supporting shoe (702) are the alignment setting, just the upper end turning of supporting shoe (702) sets up to the arc angle.

5. The hydrogen pipeline life test device according to claim 4, wherein: the transmission mechanism (9) comprises two bidirectional screws (901), two moving blocks (902) are fixed at the lower end of the transparent cover (2), the two moving blocks (902) on the transparent cover (2) are respectively connected with the two ends of the bidirectional screws (901) in a threaded mode, and one end of each bidirectional screw (901) penetrates through the side wall of the frame (1) to be connected with a driving motor (3).

6. The hydrogen pipeline life test device according to claim 5, wherein: one side of the transparent cover (2) is fixed with a bulge (14), one side of the other transparent cover (2) is provided with a slot for inserting one end of the bulge (14), when the bulge (14) is inserted into the slot, an arc-shaped notch (703) of the supporting block (702) is positioned in the transparent cover (2), and two yielding ports (13) for the supporting block (702) to enter are formed in the transparent cover (2).

7. The hydrogen pipeline life testing device according to claim 1, wherein: the wind speed detection mechanism comprises a plurality of wind measuring cloth strips (10) and a plurality of wind speed sensors (11), wherein the wind speed sensors (11) are uniformly distributed in the transparent cover (2), and the wind measuring cloth strips (10) are equidistantly fixed at the inner top of the transparent cover (2).