阅读说明：本技术 一种液氢加注装置 (Liquid hydrogen filling device ) 是由 滕磊军 郝加封 于丽君 曲伟强 王涛 于 2019-10-16 设计创作，主要内容包括：本发明公开了一种液氢加注装置,包括加氢枪和连接在液氢储箱上的加氢口,所述加氢枪具有封堵内部加注通道的第一封堵部件,所述加氢口具有封堵内部加注通道的第二封堵部件,所述加氢枪插入加氢口的过程中,加氢枪先推顶第二封堵部件移位导通加氢口内的加注通道,加氢口后反向推顶第一封堵部件移位,导通加氢枪内的加注通道。本发明中,在加氢枪插入加氢口的过程中,先导通了加氢口内的加注通道,使得液氢储箱内液氢气化为氢气对加氢枪和加氢口之间的腔室进行吹除,然后再导通加氢枪内的加注通道,进行液氢的加注,整个过程在加氢枪插入加氢口的过程中自动完成,不需要额外的操作,有效的提高了工作效率,使用体验佳。(The invention discloses a liquid hydrogen filling device, which comprises a hydrogenation gun and a hydrogenation port connected to a liquid hydrogen storage tank, wherein the hydrogenation gun is provided with a first plugging part for plugging an internal filling channel, the hydrogenation port is provided with a second plugging part for plugging the internal filling channel, in the process of inserting the hydrogenation gun into the hydrogenation port, the hydrogenation gun firstly pushes the second plugging part to displace to conduct the filling channel in the hydrogenation port, and then reversely pushes the first plugging part to displace after the hydrogenation port to conduct the filling channel in the hydrogenation gun. In the process of inserting the hydrogenation gun into the hydrogenation port, the filling channel in the hydrogenation port is led through, so that liquid hydrogen in the liquid hydrogen storage tank is gasified into hydrogen to blow off a cavity between the hydrogenation gun and the hydrogenation port, then the filling channel in the hydrogenation gun is conducted to fill the liquid hydrogen, the whole process is automatically completed in the process of inserting the hydrogenation gun into the hydrogenation port, extra operation is not needed, the working efficiency is effectively improved, and the use experience is good.)

1. The liquid hydrogen filling device is characterized by comprising a hydrogenation gun and a hydrogenation port connected to a liquid hydrogen storage tank, wherein the hydrogenation gun is provided with a first plugging part for plugging an internal filling channel, the hydrogenation port is provided with a second plugging part for plugging the internal filling channel, in the process that the hydrogenation gun is inserted into the hydrogenation port, the hydrogenation gun firstly pushes the second plugging part to displace to conduct the filling channel in the hydrogenation port, and reversely pushes the first plugging part to displace after the hydrogenation port to conduct the filling channel in the hydrogenation gun.

2. The liquid hydrogen filling apparatus according to claim 1, wherein the first plugging member includes a first valve plug, a first elastic member providing an acting force for normally closing the filling passage inside the hydrogenation gun with the first valve plug, and an ejector block disposed on the first valve plug, the second plugging member includes a second valve plug, a second elastic member providing an acting force for normally closing the filling passage inside the hydrogenation port with the second valve plug, and an ejector rod disposed on the second valve plug, the ejector rod abuts against the ejector block during insertion of the hydrogenation gun into the hydrogenation port, and an elastic coefficient of the first elastic member is greater than an elastic coefficient of the second elastic member.

3. The liquid hydrogen filling apparatus according to claim 2, wherein a limiting structure is provided in the hydrogen inlet to limit the second valve plug from being displaced to a certain position.

4. The liquid hydrogen filling apparatus according to claim 3, wherein the limiting structure comprises a limiting convex ring disposed on an inner wall of the filling passage in the hydrogenation port, the second valve plug is provided with a limiting convex portion protruding in a radial direction, and after the second valve plug is displaced by a certain distance, the limiting convex portion abuts against the limiting convex ring.

5. The liquid hydrogen filling apparatus according to claim 4, wherein the second valve plug comprises a cylindrical tube, one end of the cylindrical tube is open, the other end of the cylindrical tube is provided with a plug portion in a sealing manner, the cylindrical tube is slidably disposed through the limit convex ring, the second elastic member comprises a spring sleeved on the cylindrical tube, two ends of the spring are respectively limited and supported between the plug portion and the limit convex ring, and the limit convex portion comprises a limit convex rib disposed around the outer wall of the cylindrical tube;

preferably, the cylinder is internally provided with a liquid channel, and the cylinder wall of the cylinder is provided with a through hole communicated with a filling channel at the inner part of the hydrogenation port.

6. The liquid hydrogen filling device according to claim 5, wherein the hydrogenation port includes an inner sleeve of the hydrogenation gun, the hydrogenation gun includes an inner sleeve of the hydrogenation gun, the inner diameter of the inlet end of the inner sleeve of the hydrogenation port is larger than the outer diameter of the outlet end of the inner sleeve of the hydrogenation gun, the outlet end of the inner sleeve of the hydrogenation gun is inserted into the inlet end of the inner sleeve of the hydrogenation port, a gap is formed between the inner sleeve of the hydrogenation gun and the inner sleeve of the hydrogenation port, the hydrogenation gun pushes the second plugging member to displace to conduct the filling channel of the hydrogenation port, and the liquid hydrogen storage tank introduces blowing-off hydrogen into a cavity between the hydrogenation gun and the hydrogenation port, and the blowing-off hydrogen is discharged from.

7. The liquid hydrogen filling device according to claim 6, wherein a sealing portion is disposed inside the inner sleeve of the hydrogenation port, the outlet end of the inner sleeve of the hydrogenation gun abuts against the sealing portion, the ejector rod on the second valve plug pushes the first valve plug to displace, the filling channel in the hydrogenation gun is conducted, and the liquid hydrogen filling device fills liquid hydrogen into the liquid hydrogen storage tank.

8. The liquid hydrogen filling device according to claim 7, wherein the inner sleeve of the hydrogenation port is provided with a first tube and a second tube in sequence from the inlet end to the outlet end, the inner diameter of the first tube is larger than the inner diameter of the second tube and the outer diameter of the outlet end of the inner sleeve of the hydrogenation gun, the first tube and the second tube are connected through a transition taper tube, and the sealing part comprises a sealing ring surface arranged on the inner wall of the transition taper tube/the inner wall of the second tube;

preferably, the outlet end of the inner sleeve of the hydrogenation gun is provided with a sealing ring which is in sealing fit with the sealing ring surface.

9. The liquid hydrogen filling device according to claim 6, comprising a handle mechanism, wherein the hydrogenation gun comprises a hydrogenation gun outer tube and a hydrogenation gun outer tube, the hydrogenation gun outer tube is fixedly mounted outside the hydrogenation gun inner tube, the hydrogenation gun outer tube is slidably sleeved on the hydrogenation gun outer tube, the handle mechanism comprises a push rod rotatably connected with the hydrogenation gun outer tube, the push rod is connected with the hydrogenation gun outer tube through a second connecting rod, the push rod rotates to drive the second connecting rod to push the hydrogenation gun outer tube and the hydrogenation gun inner tube to slide towards the inside of the hydrogenation port, and the hydrogenation port inner filling channel and the hydrogenation gun inner filling channel are sequentially communicated.

10. The liquid hydrogen filling apparatus according to claim 9, wherein the hydrogenation gun includes a locking sleeve slidably fitted over an outer tube of the hydrogenation gun, the hydrogenation port includes a hydrogenation port outer tube fixedly disposed outside the hydrogenation port inner tube, the push rod is connected to the locking sleeve through a first connecting rod, during rotation of the push rod, the first connecting rod is first driven to push the locking sleeve to slide towards the hydrogenation port outer tube, and to be locked on the hydrogenation port outer tube, and then the second connecting rod is driven to drive the hydrogenation gun inner tube to slide towards the hydrogenation port inner tube;

preferably, a sliding groove is formed in the push rod along the length direction of the push rod, one end of the second connecting rod is installed in the sliding groove in a free sliding mode, the other end of the second connecting rod is rotatably connected to the outer sleeve of the hydrogenation gun, a connecting hole is formed in the push rod between the sliding groove and the outer pipe of the hydrogenation gun, and the first connecting rod is rotatably connected to the connecting hole.

Technical Field

The invention relates to the technical field of low-temperature liquid filling, in particular to a liquid hydrogen filling device.

Background

The construction of a hydrogenation station is an important factor influencing the development of the hydrogen energy industry, and hydrogenation systems are currently divided into two types, namely a high-pressure normal-temperature hydrogen filling system and a low-pressure liquid hydrogen filling system. Compared with high-pressure hydrogen, the liquid hydrogen has high hydrogen storage density, low storage and transportation cost, low storage pressure and safety, so that the method has a wider prospect.

According to the planning of the national energy-saving and new energy automobile technical route map, with the increase of the hydrogen demand of a fuel cell vehicle, the number of hydrogen stations in China can be gradually increased, so that the domestic hydrogen market is still very large, most of the hydrogen stations operated in China are high-pressure hydrogen storage hydrogen stations, low-temperature liquid hydrogen stations are not put into use in the planning, as the hydrogen stations are just started, the related technology is not mature, liquid hydrogen filling equipment equipped for the liquid hydrogen stations is not available, the development of monomer equipment for liquid hydrogen filling is very important, the realization of the localization of the liquid hydrogen equipment is especially important, and the hydrogen station hydrogen energy management system has an important role in improving the strength of the hydrogen energy development and hydrogen station construction field in China.

Unlike liquefied natural gas, liquid hydrogen is extremely low in temperature, is extremely easy to gasify, and is dangerous when mixed with oxygen, so that a blowing function, a heat insulation function and safety must be considered for a liquid hydrogen filling device. The LNG filling gun is used for the relatively mature low-temperature liquid filling equipment in the current market, however, the functions are not embodied in the structure, and the LNG filling gun is not suitable for liquid hydrogen filling. And heavy weight and poor operability.

Furthermore, when general LNG liquid feeding rifle was the LNG car liquid feeding, operating personnel docked liquid feeding rifle and the gas port of dress on the LNG car, then twist grip forward, along the direction of gas port promptly, locked the liquid feeding rifle on the gas port, and when this process was gone on, liquid feeding rifle passageway and gas port intercommunication begin to annotate LNG liquid to the LNG car through liquid feeding rifle passageway, and it has not blown the air in the chamber between hydrogen feeding rifle and the gas port. Also mention among the prior art to blow the scheme of removing to the cavity between hydrogenation rifle and the hydrogenation mouth, but it often has designed the blowdown pipeline for one's sake, need in the grafting process, and manual control blowdown pipeline switches on, and its structure is complicated to operate also complicacy, is unfavorable for improving production efficiency.

In view of the above, the present invention is particularly proposed.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a liquid hydrogen filling device, wherein the blowing and filling processes are automatically and sequentially executed in the process of inserting a hydrogenation gun into a hydrogenation port.

In order to solve the technical problems, the invention adopts the technical scheme that:

the liquid hydrogen filling device comprises a hydrogenation gun and a hydrogenation port connected to a liquid hydrogen storage tank, wherein the hydrogenation gun is provided with a first plugging part for plugging an internal filling channel, the hydrogenation port is provided with a second plugging part for plugging the internal filling channel, in the process that the hydrogenation gun is inserted into the hydrogenation port, the hydrogenation gun firstly pushes the second plugging part to shift to conduct the filling channel in the hydrogenation port, and then reversely pushes the first plugging part to shift to conduct the filling channel in the hydrogenation gun.

In the scheme, in the process that the hydrogenation gun is inserted into the hydrogenation port, the pilot leads to the filling channel in the hydrogenation port, so that liquid hydrogen in the liquid hydrogen storage tank is gasified into hydrogen to blow off a cavity between the hydrogenation gun and the hydrogenation port, then the filling channel in the hydrogenation gun is conducted to fill the liquid hydrogen, the whole process is automatically completed in the process that the hydrogenation gun is inserted into the hydrogenation port, extra operation is not needed, the working efficiency is effectively improved, and the use experience is good.

Preferably, the first plugging component comprises a first valve plug, a first elastic component and an ejector block, the first elastic component provides acting force of a normally closed hydrogenation gun internal filling channel of the first valve plug, the ejector block is arranged on the first valve plug, the second plugging component comprises a second valve plug, a second elastic component provides acting force of a normally closed hydrogenation gun internal filling channel of the second valve plug, and an ejector rod is arranged on the second valve plug, the ejector rod is abutted to the ejector block in the process that the hydrogenation gun is inserted into the hydrogenation port, and the elastic coefficient of the first elastic component is greater than that of the second elastic component.

In the above scheme, by designing that the elastic coefficient of the first elastic component is greater than that of the second elastic component, the second plugging component is pushed away first to conduct the filling channel in the hydrogenation port when the first plugging component and the second plugging component are abutted, and the first plugging component is pushed away later.

Preferably, a limiting structure for limiting the second valve plug to move to a certain position is arranged in the hydrogenation port.

In the above scheme, set up limit structure in the hydrogenation mouth for second valve plug rigidity ensures that second valve plug can reverse action on first shutoff part, makes first shutoff part pushed away, thereby switches on the inside filling passageway of hydrogenation rifle.

Preferably, the limiting structure comprises a limiting convex ring arranged on the inner wall of the filling channel in the hydrogenation port, a limiting convex part arranged in a protruding manner along the radial direction is arranged on the second valve plug, and after the second valve plug is displaced for a certain distance, the limiting convex part abuts against the limiting convex ring.

Preferably, the second valve plug comprises a cylindrical barrel, one end of the cylindrical barrel is open, the other end of the cylindrical barrel is provided with a plug portion in a sealing mode, the cylindrical barrel can slidably penetrate through the limiting convex ring, the second elastic part comprises a spring sleeved on the cylindrical barrel, two ends of the spring are respectively supported between the plug portion and the limiting convex ring in a limiting mode, and the limiting convex portion comprises a limiting convex rib arranged around the outer wall of the cylindrical barrel in a surrounding mode.

Preferably, the cylinder is internally provided with a liquid channel, and the cylinder wall of the cylinder is provided with a through hole communicated with a filling channel at the inner part of the hydrogenation port. The hydrogen sprayed out of the liquid hydrogen storage tank firstly enters the fluid channel, then enters the filling channel in the hydrogenation port through the through hole, then enters the cavity in the hydrogenation gun, and finally carries a small amount of air to be discharged from the splicing gap between the hydrogenation gun and the hydrogenation port after being spliced.

Preferably, the hydrogenation mouth includes hydrogenation mouth interior sleeve pipe, the hydrogenation rifle includes interior sleeve pipe of hydrogenation rifle, the internal diameter of the interior sleeve pipe entrance point of hydrogenation mouth is greater than interior sleeve pipe exit end external diameter of hydrogenation rifle, the interior sheathed tube exit end of hydrogenation rifle inserts the interior sheathed tube entrance point of hydrogenation mouth has the clearance between the interior sleeve pipe of hydrogenation rifle and the interior sleeve pipe of hydrogenation mouth, and the hydrogenation rifle promotes the second shutoff part and shifts and switch on the filling passageway of hydrogenation mouth, liquid hydrogen storage tank to let in the cavity between hydrogenation rifle and the hydrogenation mouth and blow off hydrogen, blow off hydrogen by the clearance is discharged.

Preferably, a sealing part is arranged in the inner sleeve of the hydrogenation port, after the outlet end of the inner sleeve of the hydrogenation gun abuts against the sealing part, the ejector rod on the second valve plug pushes the first valve plug to displace, a filling channel in the hydrogenation gun is conducted, and the liquid hydrogen filling device fills liquid hydrogen into the liquid hydrogen storage tank. In the scheme, the sealing part is designed, so that the gap between the hydrogenation gun and the hydrogenation port can be sealed, and the liquid hydrogen cannot be leaked when the liquid hydrogen is filled.

Preferably, the inner sleeve of the hydrogenation port is sequentially provided with a first pipe body and a second pipe body from the inlet end to the outlet end, the inner diameter of the first pipe body is larger than the inner diameter of the second pipe body and the outer diameter of the outlet end of the inner sleeve of the hydrogenation gun, the first pipe body and the second pipe body are connected through a transition taper pipe, and the sealing part comprises a sealing ring surface arranged on the inner wall of the transition taper pipe or on the inner wall of the second pipe body;

preferably, the outlet end of the inner sleeve of the hydrogenation gun is provided with a sealing ring which is in sealing fit with the sealing ring surface.

Preferably, including handle mechanism, the hydrogenation rifle includes hydrogenation rifle outside pipe and hydrogenation rifle outer tube, and hydrogenation rifle outer tube fixed mounting is in the sleeve pipe outside in the hydrogenation rifle, the cover of hydrogenation rifle outside pipe slidable is established on the hydrogenation rifle outer tube, handle mechanism includes rotatable coupling the push rod of hydrogenation rifle outside pipe, push rod pass through first connecting rod and connect the inside filling passageway of hydrogenation mouthful is switched on in proper order to the inside slip of hydrogenation mouth in hydrogenation rifle outer tube, push rod rotation, drive first connecting rod promotion hydrogenation rifle outer tube and the hydrogenation rifle interior sleeve pipe.

Preferably, the hydrogenation gun comprises a locking sleeve which is sleeved on an external pipe of the hydrogenation gun in a sliding manner, the hydrogenation port comprises a hydrogenation port outer sleeve which is fixedly arranged outside the hydrogenation port inner sleeve, the push rod is connected with the locking sleeve through a second connecting rod, in the rotating process of the push rod, the second connecting rod is firstly driven to push the locking sleeve to slide towards the hydrogenation port outer sleeve and be locked on the hydrogenation port outer sleeve, and then the first connecting rod is driven to drive the hydrogenation gun inner sleeve to slide towards the hydrogenation port inner sleeve;

preferably, a sliding groove is formed in the push rod along the length direction of the push rod, one end of the first connecting rod is installed in the sliding groove in a free sliding mode, the other end of the first connecting rod is rotatably connected to the outer sleeve of the hydrogenation gun, a connecting hole is formed in the push rod between the sliding groove and the outer pipe of the hydrogenation gun, and the second connecting rod is rotatably connected to the connecting hole.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:

the liquid hydrogen filling device comprises a hydrogenation gun and a hydrogenation port connected to a liquid hydrogen storage tank, wherein the hydrogenation gun is provided with a first plugging part for plugging an internal filling channel, the hydrogenation port is provided with a second plugging part for plugging the internal filling channel, in the process that the hydrogenation gun is inserted into the hydrogenation port, the hydrogenation gun firstly pushes the second plugging part to displace to conduct the filling channel in the hydrogenation port, and then reversely pushes the first plugging part to displace after the hydrogenation port to conduct the filling channel in the hydrogenation gun. In the process of inserting the hydrogenation gun into the hydrogenation port, the filling channel in the hydrogenation port is led through, so that liquid hydrogen in the liquid hydrogen storage tank is gasified into hydrogen to blow off a cavity between the hydrogenation gun and the hydrogenation port, then the filling channel in the hydrogenation gun is conducted to fill the liquid hydrogen, the whole process is automatically completed in the process of inserting the hydrogenation gun into the hydrogenation port, extra operation is not needed, the working efficiency is effectively improved, and the use experience is good.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

in the drawings:

FIG. 1 is a schematic view of a hydrogenation gun according to the present invention

FIG. 2 is a schematic view of a hydrogenation port structure of the present invention

FIG. 3 is a schematic view of the locking state of the liquid hydrogen filling device according to the present invention;

FIG. 4 is a schematic view of the liquid hydrogen filling apparatus of the present invention in a blow-off state before filling liquid hydrogen;

fig. 5 is a schematic view of a state in which the liquid hydrogen filling apparatus of the present invention fills liquid hydrogen.

Wherein, 1-a hydrogenation gun outer sleeve outer tube, 2-a hydrogenation gun outer sleeve inner tube, 3-a hydrogenation gun inner sleeve inner tube, 4-a first elastic component, 5-a blow-off pipeline, 6-a second connecting rod, 7-a push rod, 8-a first connecting rod, 9-a locking sleeve, 10-a hydrogenation gun outer tube, 11-a limiting ball, 12-an O-ring, 13-a sealing ring, 14-a sealing sleeve, 15-a top block, 16-a first valve plug, 17-a sealing seat, 18-a hydrogenation port outer sleeve outer tube, 19-a hydrogenation port outer sleeve inner tube, 20-a hydrogenation port inner sleeve inner tube, 21-a push rod, 22-an annular sealing sleeve, 23-an elastic supporting component, 24-a first corrugated tube section, 25-a sealing sleeve/limiting part, 26-a pressure relief pipeline, 27-a gasket, 28-a second valve plug, 29-a hydrogen adding port sealing seat, 30-a second elastic component and 31-a fixed ring.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.