A hydrogenation gun bracket with an automatic purging function

Abstract

The present invention relates to a hydrogenation gun bracket with an automatic purging function, which comprises a mounting backplate (5), and an upper support (2) and a lower support (7) symmetrically mounted at the upper and lower ends of the mounting backplate (5). A sealing structure for sealing the nozzle of the hydrogenation gun and a purging structure for purging compressed gas into the nozzle of the hydrogenation gun are provided in the upper support (2). An air passage for the purging structure to pass through is provided on the sealing structure. A bearing structure for bearing the grip of the hydrogenation gun and a detection sensor for detecting the hydrogenation gun are provided on the lower support (7). The purging structure is connected to a gas source (17), and both the purging structure and the detection sensor are connected to an automatic control structure. Compared with the prior art, the present invention can improve the icing condition after pre-cooling and filling of the hydrogenation gun in a short time, greatly improve the usage efficiency of the hydrogenation gun, and at the same time can extend the service life of the internal sealing parts.

Description

Technical Field

[0001] The present invention relates to a hydrogen filling gun bracket, and more particularly to a hydrogen filling gun bracket with an automatic purging function. Background Art

[0002] At present, fuel cell vehicles mainly store hydrogen in the form of high-pressure gas in hydrogen storage cylinders. With the increasing requirement for vehicle driving range, the hydrogen storage pressure has gradually increased from 35 MPa to 70 MPa. When the hydrogen storage cylinder is filled with high-pressure hydrogen, a significant temperature rise will occur. Excessive temperature rise is likely to damage the bonding strength between the inner liner and the outer coating of the hydrogen storage cylinder, resulting in the detachment of the inner liner and bringing risks such as hydrogen leakage. Therefore, when filling high-pressure hydrogen, pre-cooled hydrogen at -40°C is usually used.

[0003] Since most parts of the hydrogen filling gun are metal parts with good thermal conductivity, after heat exchange with -40°C pre-cooled hydrogen, the temperature will rapidly drop below the freezing point. When the water vapor in the air encounters cold, ice will form on the surface of the metal parts of the hydrogen filling gun, freezing the mechanical structure inside and making the hydrogen filling gun unable to be used again in a short time, which will affect the filling efficiency. Moreover, the hydrogen filling gun being in an ice-covered state for a long time also has a great impact on the service life of the sealing parts. Once the sealing parts crack at low temperature, hydrogen will leak out, leading to serious safety accidents.

[0004] Purging the ice-covered hydrogen filling gun can accelerate the disturbance of the surrounding air, convert natural convection into forced heat transfer, and accelerate the heat transfer efficiency between the ice and the air, playing a role of "rapid ice melting".

[0005] At present, domestic hydrogen filling gun brackets, such as the patent document CN213576781U, only realize the placement function of the hydrogen filling gun and cannot effectively deal with the situation of the hydrogen filling gun icing. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art and provide a hydrogen filling gun bracket with an automatic purging function.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A hydrogen filling gun bracket with an automatic purging function includes a mounting backplate, and an upper support and a lower support symmetrically installed at the upper and lower ends of the mounting backplate. The upper support is provided with a sealing structure for sealing the gun head of the hydrogen filling gun and a purging structure for purging compressed gas into the gun head of the hydrogen filling gun. An air passage for the purging structure to pass through is provided on the sealing structure. The lower support is provided with a bearing structure for bearing the grip of the hydrogen filling gun and a detection sensor for detecting the hydrogen filling gun. The purging structure is connected to a gas source, and both the purging structure and the detection sensor are connected to an automatic control structure.

[0009] Preferably, the upper support is a receiving structure with an open bottom end, a protective shell covers the top and side portions of the upper support, and the sealing structure is installed in the receiving space of the upper support.

[0010] Preferably, the sealing structure includes a sealing head and an upper end cover. The sealing head is installed in the receiving space of the support body through an elastic structure. The upper end cover is installed at the bottom end of the upper support body and supports the sealing head. The bottom of the sealing head is a spherical end that fits with the hydrogenation gun nozzle to form a seal. The air passage runs longitudinally through the sealing head and penetrates the spherical end. The upper end cover is provided with a movable hole for the movable movement of the spherical end. When the bracket is in the vacant state, the sealing head is subjected to a downward pressing force by the elastic structure, so that the annular boss at the upper end of the sealing head closely fits on the top surface of the upper end cover, and the spherical end of the sealing head protrudes outside the bottom plane of the movable hole.

[0011] Preferably, the elastic structure includes a spring, and annular grooves for installing the spring are correspondingly provided on the support body and the sealing head.

[0012] Preferably, the aperture of the movable hole is adapted to the nozzle of the hydrogenation gun, so that the nozzle of the hydrogenation gun can move up and down in the movable hole.

[0013] Preferably, the purging structure includes an air delivery hose. The air delivery hose passes through the upper support and extends into the air passage of the sealing structure. The air delivery hose is installed on the sealing structure through a sealing gasket.

[0014] Preferably, the carrying structure includes a U-shaped groove opened in the lower support in the horizontal direction for receiving the grip of the hydrogenation gun.

[0015] Preferably, the detection sensor includes a photosensitive sensor. An installation hole for installing the photosensitive sensor is provided on the lower support. The photosensitive sensor is installed in the installation hole, and the sensing end of the photosensitive sensor is aligned with the area in the U-shaped groove for receiving the grip of the hydrogenation gun.

[0016] Preferably, a limiting block for restricting the outward tilting and dropping of the grip of the hydrogenation gun is further provided on the upper plane of the open end of the U-shaped groove.

[0017] Preferably, the automatic control structure includes a processor, a solenoid valve, and a solenoid valve actuator. The air source is connected to the purging structure through the solenoid valve. The solenoid valve is connected to the solenoid valve actuator. The processor is respectively connected to the detection sensor and the solenoid valve actuator.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) The present invention is provided with a purging structure to purge the frozen hydrogenation gun, which can accelerate the air flow rate around the hydrogenation gun, convert natural convection into forced heat transfer, improve the heat transfer efficiency between the metal parts of the hydrogenation gun and the air, can improve the icing condition of the hydrogenation gun in a short time, greatly improve the use efficiency of the hydrogenation gun, and at the same time can extend the service life of the internal seal;

[0020] (2) The sealing structure of the present invention plays a certain sealing role for the hydrogenation gun head, prevents the compressed gas from leaking during purging, can improve the purging efficiency and reduce gas waste;

[0021] (3) The present invention detects the placement position of the hydrogenation gun through a detection sensor and controls the solenoid valve to open the gas path, which can achieve automatic purging, improve intelligence, and avoid manual omission and misoperation;

[0022] (4) The present invention is provided with a resilient sealing structure on the upper support. When the hydrogenation gun is placed on the support, under the thrust of the spring, it tightly fits on the lower support, which is convenient for use and can effectively prevent the hydrogenation gun from tipping over;

[0023] (5) The design of the limit stop block on the lower support of the present invention can prevent the hydrogenation gun from tipping outwards and slipping, improving the structural stability and safety;

[0024] (6) The present invention has a simple structure, few components, and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective structural view of a hydrogenation gun support with an automatic purging function according to the present invention;

[0026] Figure 2 is a sectional view of a hydrogenation gun support with an automatic purging function according to the present invention;

[0027] Figure 3 is an exploded assembly view of the upper structure of a hydrogenation gun support with an automatic purging function according to the present invention;

[0028] Figure 4 is a sectional view of the upper structure of a hydrogenation gun support with an automatic purging function after assembly according to the present invention;

[0029] Figure 5 is a structural view of the mounting back plate in a hydrogenation gun support with an automatic purging function according to the present invention;

[0030] Figure 6 is an assembly view of the upper structure of a hydrogenation gun support with an automatic purging function and the mounting back plate according to the present invention;

[0031] Figure 7 Schematic three-dimensional structure diagram of the lower support in a hydrogenation gun bracket with an automatic purging function according to the present invention;

[0032] Figure 8 Cross-sectional view of the lower support in a hydrogenation gun bracket with an automatic purging function according to the present invention;

[0033] Figure 9 Assembly schematic diagram of the lower support and the mounting back plate in a hydrogenation gun bracket with an automatic purging function according to the present invention;

[0034] Figure 10 Schematic structure diagram of the automatic control structure in a hydrogenation gun bracket with an automatic purging function according to the present invention;

[0035] Figure 11 Schematic diagram of the usage process of a hydrogenation gun bracket with an automatic purging function according to the present invention.

[0036] In the figure, 1 is a gas transmission hose, 2 is an upper support, 3 is a spring, 4 is an upper end cover, 5 is a mounting back plate, 6 is a photosensitive sensor, 7 is a lower support, 8 is a protective shell, 9 is a sealing gasket, 10 is a sealing head, 11 is a back plate screw, 12 is a side screw, 13 is a limit stop, 14 is a processor, 15 is a solenoid valve, 16 is a solenoid valve actuator, and 17 is a gas source. Detailed implementation manners

[0037] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is only illustrative in nature, and the present invention is not intended to limit the objects to which it is applicable or its uses, and the present invention is not limited to the following embodiments.

[0038] Embodiment

[0039] As Figure 1 shown, this embodiment provides a hydrogenation gun bracket with an automatic purging function, including a mounting back plate 5 and an upper support 2 and a lower support 7 symmetrically installed at the upper and lower ends of the mounting back plate 5. The upper support 2 is provided with a sealing structure for sealing the gun head of the hydrogenation gun and a purging structure for purging compressed gas into the gun head of the hydrogenation gun. An air passage for the purging structure to pass through is provided on the sealing structure. The lower support 7 is provided with a bearing structure for bearing the grip of the hydrogenation gun and a detection sensor for detecting the hydrogenation gun. The purging structure is connected to the gas source 17, and both the purging structure and the detection sensor are connected to the automatic control structure.

[0040] As Figures 2 to 4 shown, the upper support 2 is a receiving body structure with an open bottom end. The top and side of the upper support 2 are covered with a protective shell 8, and the sealing structure is installed in the receiving space of the upper support 2.

[0041] The sealing structure includes a sealing head 10 and an upper end cover 4. The sealing head 10 is made of rubber material. The upper end of the sealing head 10 is a T-shaped protruding structure, and the lower end of the upper end cover 4 is a T-shaped protruding structure. The sealing head 10 is installed in the accommodating space of the support body through an elastic structure. The upper end cover 4 is installed at the bottom end of the upper support 2 body and supports the sealing head 10. After assembly, after the sealing head 10 is sleeved into the upper end cover 4, the T-shaped protrusion at the top of the sealing head 10 abuts against the top of the upper end cover 4 to prevent the sealing head 10 from falling off. The bottom of the sealing head 10 is a spherical end that fits with the hydrogenation nozzle to form a seal. The air duct runs longitudinally through the sealing head 10 and penetrates the spherical end. The upper end cover 4 is provided with a movable hole for the spherical end to move. The upper support 2 and the upper end cover 4 are screwed together. The elastic structure includes a spring 3. Corresponding annular grooves for installing the spring 3 are provided on the support body and the sealing head 10, and a certain downward spring 3 thrust is given to the sealing head 10, so that the annular boss at the upper end of the sealing head 10 closely fits on the top surface of the upper end cover 4 to play a limiting role. The spherical end of the sealing head 10 protrudes outside the bottom plane of the movable hole. The aperture of the movable hole on the upper end cover 4 is adapted to the hydrogenation gun head, so that the hydrogenation gun head can move up and down in the movable hole. The inner diameter of the movable hole on the upper end cover 4 is just large enough to allow the hydrogenation gun head to extend in, which can prevent external dust and rain from entering. The purging structure includes an air delivery hose 1. The air delivery hose 1 passes through the upper support 2 and extends into the air duct of the sealing structure. The air delivery hose 1 is installed on the sealing structure through a sealing gasket 9. The air delivery hose 1 passes through the sealing gasket 9 and extends into the air duct of the sealing head 10.

[0042] As Figure 5 、 Figure 6 shown, the side of the protective shell 8 is provided with an opening, and it is connected to the threaded holes on both sides of the upper support 2 through side screws 12. Two screw holes are opened above the back of the upper support 2. Two backplane screws 11 pass through the two through holes on the mounting backplane 5 and are fixed to the upper support 2. The air delivery hose 1 passes through the through hole on the mounting backplane 5 and is connected to the gas source 17 in the hydrogenation machine. A through hole is also opened in the middle of the mounting backplane 5 for connecting and fixing to the side plate of the hydrogenation machine.

[0043] The bearing structure includes a U-shaped groove opened in the lower support 7 in the horizontal direction for accommodating the grip of the hydrogenation gun.

[0044] As Figure 7 、 Figure 8As shown in the figure, the detection sensor includes a photosensitive sensor 6. An installation hole for installing the photosensitive sensor 6 is provided on the lower support 7. The photosensitive sensor 6 is installed in the installation hole, and the sensing end of the photosensitive sensor 6 is aligned with the area in the U-shaped groove for accommodating the hydrogen filling gun grip. Glue is injected into the installation hole to achieve the functions of fixation and waterproofing. The transmission line of the photosensitive sensor 6 passes through the through hole in the middle of the installation backplane 5 and is connected to the automatic control structure on the side of the hydrogen filling machine. In addition, a limit stop block 13 for restricting the outward tilt and dropping of the hydrogen filling gun grip is also provided on the upper plane of the open end of the U-shaped groove, thereby improving the structural stability and safety.

[0045] As Figure 9 shown, there are also two screw holes below the back of the lower support 7. Two backplane screws 11 pass through the two through holes in the lower part of the installation backplane 5 and are fixed to the lower support 7.

[0046] As Figure 10 shown, the automatic control structure includes a processor 14, a solenoid valve 15, and a solenoid valve actuator 16. The gas source 17 is connected to the purging structure through the solenoid valve 15. The solenoid valve 15 is connected to the solenoid valve actuator 16. The processor 14 is respectively connected to the detection sensor and the solenoid valve actuator 16.

[0047] As Figure 11 shown, the specific use process of the hydrogen filling gun bracket with an automatic purging function of the present invention is as follows:

[0048] First, place the hydrogen filling gun obliquely and push up the sealing head 10. The sealing head 10 will overcome the thrust of the spring 3 and move upward along the inner wall of the upper support 2, as Figure 11 shown in (a) of the figure. Then rotate the hydrogen filling gun to the vertical position so that the thin part of the hydrogen filling gun grip enters the U-shaped groove of the lower support 7, as Figure 11 shown in (b) of the figure. Finally, release the hydrogen filling gun, and the sealing head 10 will push the hydrogen filling gun downward until it tightly fits on the upper plane of the lower support 7 under the thrust of the spring 3, as Figure 11 shown in (c) of the figure. Due to the pushing pressure of the spring 3, the hydrogen filling gun can be stably placed on the upper plane of the lower support 7 without tipping. At the same time, due to the setting of the limit stop block 13, the structural stability is further ensured, and safety risks such as tipping and slipping of the hydrogen filling cavity during use are avoided.

[0049] When the hydrogen filling gun is placed stably, the photosensitive sensor 6 in the lower support 7 detects a signal, and through the signal processor 14, it is transmitted to the solenoid valve actuator 16. After a preset delay time, the solenoid valve 15 is opened, and the compressed gas passes through the gas transmission hose 1 to purge the hydrogen filling gun. When the preset purging time is reached, the solenoid valve 15 is closed, and the purging ends.

[0050] The above-described embodiments are merely examples and do not represent a limitation on the scope of the present invention. These embodiments can also be implemented in various other ways, and various omissions, substitutions, and changes can be made without departing from the technical idea of the present invention.

Claims

1. A hydrogenation gun bracket with an automatic purging function, characterized in that, It includes an installation backplane (5), an upper support (2) and a lower support (7) symmetrically installed at the upper and lower ends of the installation backplane (5). A sealing structure for sealing the hydrogen filling gun head and a purging structure for purging compressed gas into the hydrogen filling gun head are provided in the upper support (2). An air passage for the purging structure to pass through is provided on the sealing structure. A bearing structure for bearing the grip of the hydrogen filling gun and a detection sensor for detecting the hydrogen filling gun are provided on the lower support (7). The purging structure is connected to a gas source (17), and both the purging structure and the detection sensor are connected to an automatic control structure; The upper support (2) is a receiving body structure with an open bottom end. A protective shell (8) is provided on the top and side of the upper support (2), and the sealing structure is installed in the receiving space of the upper support (2); The sealing structure includes a sealing head (10) and an upper end cover (4). The sealing head (10) is installed in the receiving space of the body of the upper support (2) through an elastic structure. The upper end cover (4) is installed at the bottom end of the body of the upper support (2) and supports the sealing head (10). The bottom of the sealing head (10) is a spherical end that fits with the hydrogen filling gun nozzle to form a seal. The air passage runs longitudinally through the sealing head (10) and penetrates the spherical end. An activity hole for the movement of the spherical end is provided on the upper end cover (4). When the bracket is in the vacant state, the sealing head (10) is pressed downward by the elastic structure, so that the annular boss at the upper end of the sealing head (10) closely fits on the top surface of the upper end cover (4), and the spherical end of the sealing head (10) protrudes outside the bottom plane of the activity hole; The aperture of the activity hole is adapted to the hydrogen filling gun head, so that the hydrogen filling gun head can move up and down in the activity hole; The purging structure includes an air delivery hose (1). The air delivery hose (1) passes through the upper support (2) and extends into the air passage of the sealing structure. The air delivery hose (1) is installed on the sealing structure through a sealing gasket (9); The automatic control structure includes a processor (14), a solenoid valve (15) and a solenoid valve actuator (16). The gas source (17) is connected to the purging structure through the solenoid valve (15). The solenoid valve (15) is connected to the solenoid valve actuator (16), and the processor (14) is respectively connected to the detection sensor and the solenoid valve actuator (16).

2. The hydrogenation gun bracket with an automatic purging function according to claim 1, characterized in that, The elastic structure includes a spring (3). Annular grooves for installing the spring (3) are correspondingly provided on the body of the upper support (2) and the sealing head (10).

3. The hydrogenation gun bracket with an automatic purging function according to claim 1, characterized in that, The bearing structure includes a U-shaped groove opened in the lower support (7) in the horizontal direction for receiving the grip of the hydrogen filling gun.

4. The hydrogenation gun bracket with an automatic purging function according to claim 3, characterized in that, The detection sensor described above includes a photosensitive sensor (6). An installation hole for installing the photosensitive sensor (6) is provided on the lower support (7). The photosensitive sensor (6) is installed in the installation hole, and the sensing end of the photosensitive sensor (6) is aligned with the area in the U-shaped groove for accommodating the grip of the hydrogen filling gun.

5. The hydrogenation gun bracket with an automatic purging function according to claim 3, characterized in that, A limit stop block (13) for restricting the outward tilting and dropping of the grip of the hydrogen filling gun is further provided on the upper plane of the open end of the U-shaped groove.

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