Liquefied natural gas filling device

Abstract

The utility model discloses a liquefied natural gas filling device, and relates to the technical field of filling devices, the liquefied natural gas filling device comprises a communicating shell, a gas filling pipe, a gas pump, a gas suction pipe, a corrugated hose, a filling head, an anti-loosening mechanism and an anti-backflow mechanism; an anti-backflow mechanism is installed in the communicating shell, the right end of the communicating shell is fixedly communicated with an air injection pipe, the tail end of the air injection pipe is fixedly communicated with an air pump, the input end of the air pump is fixedly communicated with an exhaust pipe, the left end of the communicating shell is fixedly communicated with a corrugated hose, and the tail end of the corrugated hose is fixedly communicated with an injection head. The liquefied natural gas filling device is novel in design and simple in structure, the injection head is communicated with the injection end of the gas storage tank, the sleeve shell is in threaded connection with the injection end of the gas storage tank by rotating the sleeve shell, limiting is conducted through the extrusion ring, communication of the injection end of the gas storage tank is guaranteed, and the anti-falling connection effect of the injection head and the injection end of the gas storage tank is improved.

Description

Technical Field

[0001] The present application relates to the technical field of filling devices, and in particular to a liquefied natural gas filling device. Background Art

[0002] Liquefied natural gas, whose main component is methane, is recognized as the cleanest fossil energy on earth. It is colorless, odorless, non-toxic and non-corrosive. Its volume is about 1 / 625 of the volume of the same amount of gaseous natural gas, and its mass is only about 45% of the same volume of water. Liquefied natural gas is natural gas that has been compressed and cooled to its freezing point (-161.5℃) and turned into liquid. Usually, liquefied natural gas is stored in low-temperature storage tanks at -161.5 degrees Celsius and about 0.1MPa. Its main component is methane. It is transported by special ships or tank trucks and re-gasified when used.

[0003] During the use of liquefied natural gas filling devices, some liquefied natural gas filling heads are not stably connected to the inlet pipeline, and are prone to loosening during the filling process, resulting in natural gas leakage. In addition, during the filling process, natural gas reflux occurs, affecting the amount of natural gas filled. Therefore, a liquefied natural gas filling device is proposed to address the above problems. Utility Model Content

[0004] In this embodiment, a liquefied natural gas filling device is provided to solve the problem that during the use of the liquefied natural gas filling device, some liquefied natural gas filling heads are unstablely connected to the inlet pipeline, which is easy to loosen during the filling process, resulting in natural gas leakage, and during the filling process, natural gas reflux occurs, affecting the amount of natural gas filled.

[0005] According to one aspect of the present application, a liquefied natural gas filling device is provided, including a connecting shell, an injection pipe, an air pump, an exhaust pipe, a corrugated hose, an injection head, an anti-loosening mechanism and an anti-backflow mechanism; the anti-backflow mechanism is installed in the connecting shell, the right end of the connecting shell is fixedly connected to the injection pipe, the end of the injection pipe is fixedly connected to the air pump, the air pump input end is fixedly connected to the exhaust pipe, the left end of the connecting shell is fixedly connected to the corrugated hose, and the end of the corrugated hose is fixedly connected to the injection head.

[0006] Furthermore, the anti-backflow mechanism includes a rotating shaft, a torsion spring, a toggle plate, a slot, a magnet block and an iron plate. The rotating shaft is elastically connected to the connecting shell through a torsion spring sleeved on the surface. A toggle plate is fixedly installed on the end of the rotating shaft. An iron plate is fixedly installed on the side surface of the toggle plate. The iron plate is engaged and connected with a slot provided on the inner wall of the connecting shell. A magnet block magnetically connected to the iron plate is arranged in the slot.

[0007] Furthermore, the torsion spring is sleeved on the surface of the rotating shaft, one end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the inner wall of the connecting shell.

[0008] Furthermore, the anti-loosening mechanism includes a limiting shaft, a sleeve, a rotating plate, a spring and an extrusion ring. The limiting shaft is fixedly sleeved on the surface of the corrugated hose, the sleeve is sleeved on the surface of the limiting shaft, the outer surface of the sleeve is fixedly connected to the rotating plate, a spring is arranged in the sleeve, and an extrusion ring is fixedly installed on the end of the spring.

[0009] Furthermore, one end of the spring is fixedly connected to one end of the limit shaft, the spring is sleeved on the surface of the injection head, the other end of the spring is fixedly connected to an extrusion ring sleeved on the surface of the injection head, and the outer side of the extrusion ring is slidably connected in the sleeve shell.

[0010] Furthermore, there are a plurality of rotating plates, which are distributed in a ring shape on the outer surface of the casing.

[0011] Through the above-mentioned embodiments of the present application, an anti-loosening mechanism and an anti-backflow mechanism are adopted to solve the problem that during the use of the liquefied natural gas filling device, some liquefied natural gas filling heads are unstablely connected to the entry pipeline, which is easy to loosen during the filling process, resulting in natural gas leakage, and during the filling process, natural gas reflux occurs, affecting the amount of natural gas filled. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application.

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of the present application;

[0014] Figure 2 This is a schematic front cross-sectional view of an embodiment of the present application;

[0015] Figure 3 This is a schematic diagram of the right side cross-sectional connection of a connecting shell according to an embodiment of the present application.

[0016] In the figure: 1. connecting shell; 2. rotating shaft; 3. torsion spring; 4. toggle plate; 5. slot; 6. magnet block; 7. iron plate; 8. air injection pipe; 9. air pump; 10. air extraction pipe; 11. corrugated hose; 12. limit shaft; 13. injection head; 14. spring; 15. extrusion ring; 16. sleeve; 17. rotating sheet. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0021] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0023] The filling device according to the embodiment of the present application is introduced below.

[0024] See also Figure 1-3 As shown, a liquefied natural gas filling device comprises a connecting shell 1, an injection pipe 8, an air pump 9, an exhaust pipe 10, a corrugated hose 11, an injection head 13, an anti-loosening mechanism and an anti-backflow mechanism; the anti-backflow mechanism is installed in the connecting shell 1, the right end of the connecting shell 1 is fixedly connected to the injection pipe 8, the end of the injection pipe 8 is fixedly connected to the air pump 9, the input end of the air pump 9 is fixedly connected to the exhaust pipe 10, the left end of the connecting shell 1 is fixedly connected to the corrugated hose 11, and the end of the corrugated hose 11 is fixedly connected to the injection head 13.

[0025] The anti-backflow mechanism includes a rotating shaft 2, a torsion spring 3, a toggle plate 4, a slot 5, a magnet block 6 and an iron plate 7. The rotating shaft 2 is elastically connected to the connecting shell 1 through the torsion spring 3 sleeved on the surface. The toggle plate 4 is fixedly installed at the end of the rotating shaft 2, and the iron plate 7 is fixedly installed on the side surface of the toggle plate 4. The iron plate 7 is engaged with the slot 5 opened on the inner wall of the connecting shell 1. The slot 5 is provided with a magnet block 6 magnetically connected to the iron plate 7. The torsion spring 3 is sleeved on the surface of the rotating shaft 2, one end of the torsion spring 3 is fixedly connected to the rotating shaft 2, and the other end of the torsion spring 3 is fixedly connected to the inner wall of the connecting shell 1. The anti-loosening mechanism includes a limiting shaft 12, a sleeve shell 16, a rotating sheet 17, a spring 14 and And an extrusion ring 15, the limiting shaft 12 is fixedly sleeved on the surface of the corrugated hose 11, the limiting shaft 12 surface is sleeved with a casing 16, the outer surface of the casing 16 is fixedly connected with a rotating piece 17, a spring 14 is arranged in the sleeve, and an extrusion ring 15 is fixedly installed at the end of the spring 14, one end of the spring 14 is fixedly connected to one end of the limiting shaft 12, the spring 14 is sleeved on the surface of the injection head 13, and the other end of the spring 14 is fixedly connected to the extrusion ring 15 sleeved on the surface of the injection head 13, the outer side of the extrusion ring 15 is slidably connected in the casing 16, the number of rotating pieces 17 is several, and the several rotating pieces 17 are distributed in a ring on the outer surface of the casing 16.

[0026] When the utility model is in use, the electrical components appearing in the present application are all externally connected to a power source and a control switch, the injection head 13 is connected to the injection end of the gas tank, the sleeve shell 16 is threadedly connected to the injection end of the gas tank by rotating the sleeve shell 16, and the extrusion ring 15 is used for limiting to ensure that the injection end of the gas tank is connected, and the anti-falling connection effect between the injection head 13 and the injection end of the gas tank is improved, and the air pump 9 works, and the air pump 9 is injected into the connecting shell 1 through the air injection pipe 8, and the toggle plate 4 is rotated to facilitate the gas in the connecting shell 1 to be injected into the injection head 13 through the corrugated hose 11. When the gas injection is stopped, the torsion spring 3 drives the rotating shaft 2 to return to its original position under the action of the torsion spring 3, and is magnetically connected to the magnet block 6 in the slot 5 through the iron plate 7, so as to improve other anti-backflow effects after the gas injection is stopped, and it is convenient to use.

[0027] The benefits of this application are:

[0028] 1. This liquefied natural gas filling device has a novel design and a simple structure. The injection head is connected to the injection end of the gas tank. The sleeve shell is threadedly connected to the injection end of the gas tank by rotating the sleeve shell, and the extrusion ring is used to limit the position to ensure the connection between the injection end of the gas tank, thereby improving the anti-falling connection effect between the injection head and the injection end of the gas tank. The air pump works, and the air pump injects the air into the connecting shell through the air injection pipe. The toggle plate is rotated to facilitate the gas in the connecting shell to be injected into the injection head through the corrugated hose, and the gas injection is stopped.

[0029] 2. Under the action of the torsion spring, the torsion spring drives the rotating shaft to return to its original position, and is magnetically connected to the magnet block in the slot through the iron plate, thereby improving other anti-backflow effects after stopping gas injection, and facilitating use.

[0030] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this application does not involve improvements to software and methods.

[0031] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquefied natural gas filling device, characterized in that: The invention comprises a connecting shell (1), an air injection pipe (8), an air pump (9), an air extraction pipe (10), a corrugated hose (11), an injection head (13), an anti-loosening mechanism and an anti-backflow mechanism; the anti-backflow mechanism is installed in the connecting shell (1); the right end of the connecting shell (1) is fixedly connected to the air injection pipe (8); the end of the air injection pipe (8) is fixedly connected to the air pump (9); the input end of the air pump (9) is fixedly connected to the air extraction pipe (10); the left end of the connecting shell (1) is fixedly connected to the corrugated hose (11); and the end of the corrugated hose (11) is fixedly connected to the injection head (13).

2. The liquefied natural gas filling device according to claim 1, characterized in that: The anti-backflow mechanism comprises a rotating shaft (2), a torsion spring (3), a toggle plate (4), a slot (5), a magnet block (6) and an iron plate (7); the rotating shaft (2) is elastically connected to the connecting shell (1) via the torsion spring (3) sleeved on the surface; the toggle plate (4) is fixedly mounted on the end of the rotating shaft (2); the iron plate (7) is fixedly mounted on the side surface of the toggle plate (4); the iron plate (7) is engaged with the slot (5) provided on the inner wall of the connecting shell (1); and the magnet block (6) magnetically connected to the iron plate (7) is arranged in the slot (5).

3. The liquefied natural gas filling device according to claim 2, characterized in that: The torsion spring (3) is sleeved on the surface of the rotating shaft (2), one end of the torsion spring (3) is fixedly connected to the rotating shaft (2), and the other end of the torsion spring (3) is fixedly connected to the inner wall of the connecting shell (1).

4. The liquefied natural gas filling device according to claim 1, characterized in that: The anti-loosening mechanism comprises a limiting shaft (12), a sleeve (16), a rotating piece (17), a spring (14) and an extrusion ring (15); the limiting shaft (12) is fixedly sleeved on the surface of the corrugated hose (11); the sleeve (16) is sleeved on the surface of the limiting shaft (12); the outer surface of the sleeve (16) is fixedly connected with the rotating piece (17); a spring (14) is arranged in the sleeve; and the extrusion ring (15) is fixedly installed at the end of the spring (14).

5. The liquefied natural gas filling device according to claim 4, characterized in that: One end of the spring (14) is fixedly connected to one end of the limit shaft (12), the spring (14) is sleeved on the surface of the injection head (13), the other end of the spring (14) is fixedly connected to an extrusion ring (15) sleeved on the surface of the injection head (13), and the outer side of the extrusion ring (15) is slidably connected in the sleeve shell (16).

6. The liquefied natural gas filling device according to claim 4, characterized in that: The number of the rotating pieces (17) is several, and the several rotating pieces (17) are distributed in an annular manner on the outer surface of the sleeve (16).

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