CNG (compressed natural gas) supply system

Abstract

The utility model provides a CNG (compressed natural gas) supply system which comprises a support, a gas supply device and a gas supply device. The gas cylinder is mounted in the accommodating space, and the gas cylinder is released from two ends in the axial direction of the body; the shell is arranged on the outer side of at least one part of the support, and openings are formed in the two sides, in the axial direction of the gas cylinder, of the shell correspondingly; the door body is installed on the opening and can open or close the opening. According to the CNG gas supply system, the support, the gas cylinders, the shell and the door body are combined, the technical problem that after-sales maintenance operation is difficult can be solved through the double-door design, the gas cylinder fastening belt can be retightened by opening the door body, accessories are convenient to replace, and the internal structure of the cylinder set is convenient to observe. And moreover, the design of double-end discharge of the gas cylinder is adopted, so that the gas cylinder can finish discharge in a short time, and the safety of the gas supply system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas supply, and specifically relates to a CNG gas supply system. Background Art

[0002] The bottle group of the gas supply system in the existing technology is assembled at the rear of the cab. The overall appearance of the bottle group looks relatively square, with right-angled edges on the top. The interior of the bottle group adopts a bolted frame connection method, and the outside is closed with an aluminum skin. The skin is fixed to the frame with bolts and rivets. During operation, the skin and the frame are integrally connected and cannot be opened or closed. The overall pipeline system has a gas filling diameter of 6mm, low gas filling efficiency, and long gas filling time. The gas cylinder safety release is a single-head release.

[0003] The overall appearance of the cylinder group looks relatively square, with right-angled top edges. It is assembled at the rear of the cab, which is inconsistent with the streamline of the entire vehicle; after-sales maintenance operations are inconvenient, the tightening straps cannot be operated, and internal parts cannot be replaced. The entire skin needs to be removed to perform the above operations, which has low work efficiency and too long maintenance time; the existing pipeline system has a small diameter, a long refueling time, and many customers complain; the gas cylinder is released from a single head. In case of emergency, especially in the event of fire or critical situation, the gas cylinder cannot be completely discharged in a short time, which will cause explosion and other dangerous situations. Utility Model Content

[0004] One purpose of the present invention is to provide a CNG gas supply system, which can at least solve the technical problem of difficult after-sales maintenance operations of the gas supply system in the prior art.

[0005] According to a first aspect of the present invention, a CNG gas supply system is provided, comprising: a bracket having a receiving space; a gas cylinder, the gas cylinder being installed in the receiving space, the gas cylinder having a double-head discharge in the axial direction of the gas cylinder; a shell, the shell being arranged on the outside of at least a portion of the bracket, the shell having openings on both sides of the axial direction of the gas cylinder; and a door body, the door body being installed in the opening and capable of opening or closing the opening.

[0006] Optionally, the bracket includes a bottom bracket, a top bracket and an intermediate bracket, the top bracket and the bottom bracket are spaced apart and arranged relative to each other, the intermediate bracket is located between the top bracket and the bottom bracket and is respectively connected to the top bracket and the bottom bracket, the outer shell includes a top shell and two side shells, the top shell is located on the outside of the top bracket and is connected to the top bracket, and the side shell is located on the outside of the intermediate bracket and is connected to the top shell.

[0007] Optionally, the gas cylinders are in multiple groups, and the multiple groups of gas cylinders are arranged in sequence along the direction from the top shell to the bottom bracket, and the multiple gas cylinders in each group of gas cylinders are arranged in sequence along the distribution direction of the two side shells.

[0008] Optionally, a safety pressure relief piece is installed at the end of the gas cylinder.

[0009] Optionally, the gas cylinder has arc tops at both ends of the body axis.

[0010] Optionally, a portion of the shell corresponding to the gas cylinder at a corner position in the receiving space has an arc surface, and the arc surface corresponds to the outer peripheral surface of the gas cylinder.

[0011] Optionally, the bracket includes a support rod, and the door body includes: a first door body, one end of the first door body is rotatably connected to the support rod, the other end of the door body is rotatable relative to the support rod, and the first door body is used to open a part of the opening; a second door body, one end of the second door body is rotatably connected to the support rod, the other end of the second door body is rotatable relative to the support rod, and the second door body is used to open another part of the opening.

[0012] Optionally, the first door body and the second door body are respectively connected to the support rod via hinges, and when one of the first door body and the second door body is closed, the rotation angle range of the other one of the first door body and the second door body is 0°-180°.

[0013] Optionally, the CNG gas supply system further includes: a limiting member, which is installed on the support rod and is detachably connected to the door body.

[0014] Optionally, the limiting member includes a buckle and / or a bolt.

[0015] The CNG gas supply system according to the embodiment of the present application utilizes a combination of a bracket, gas cylinder, housing, and door. The double-door design solves the technical problem of difficult after-sales maintenance operations. Opening the door allows for re-tightening of the gas cylinder fastening straps, facilitates accessory replacement, and facilitates observation of the internal structure of the cylinder assembly. Furthermore, the dual-ended gas cylinder discharge design allows for quick discharge of the gas cylinder, improving the safety of the gas supply system.

[0016] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 This is a schematic diagram of a CNG gas supply system according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a gas cylinder according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a CNG gas supply system according to an embodiment of the present invention, with the first door and the second door opened respectively;

[0021] Figure 4 yes Figure 3 Magnified view of the circled area A;

[0022] Figure 5 yes Figure 3 Magnified view of the circled area B.

[0023] Reference numerals

[0024] CNG gas supply system 100;

[0025] Bottom bracket 11; middle bracket 12; support rod 13;

[0026] Gas cylinder 20;

[0027] Shell 30; arc surface 31;

[0028] Hasp 41; bolt 42;

[0029] First door 51 ; second door 52 ; observation window 53 . DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0035] The following describes a CNG gas supply system 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0036] like Figures 1 to 3 As shown, the CNG gas supply system 100 according to an embodiment of the present application includes: a bracket, a gas cylinder 20, a shell 30 and a door body.

[0037] Specifically, the bracket has a receiving space, the gas cylinder 20 is installed in the receiving space, and the gas cylinder 20 has a double-ended discharge in the axial direction of the body. The housing 30 is provided on the outside of at least a portion of the bracket. The housing 30 has openings on both sides of the axial direction of the gas cylinder 20, and the door body is installed in the opening and can open or close the opening. The CNG gas supply system 100 of the embodiment of the present application can be used in heavy-duty trucks, especially heavy-duty trucks using new energy fuels. Optionally, the CNG gas supply system 100 of the embodiment of the present application is a rear-mounted glass fiber hoop CNG gas supply system, etc.

[0038] In other words, the CNG gas supply system 100 according to an embodiment of the present application primarily consists of a bracket, a gas cylinder 20, a housing 30, and a door. The housing 30 is disposed on at least a portion of the outer side of the bracket, and an opening is provided in the housing 30, which can be opened or closed by the door. Specifically, the bracket has a receiving space for, among other things, mounting the gas cylinder 20. The gas cylinder 20 can be discharged at both axial ends, i.e., it can be discharged at one end and the other end, improving safety. The gas cylinder utilizes a dual-ended discharge system.

[0039] A portion of the outer shell 30 corresponds to one axial end of the gas cylinder 20 and is provided with an opening, and a door body is provided at the opening position. After the door body is opened, the gas cylinder 20 can be installed or removed; another portion of the outer shell 30 corresponds to the other axial end of the gas cylinder 20 and is provided with an opening, and a door body is also provided at the opening position. After the door body is opened, the gas cylinder 20 can also be installed or removed, which is convenient for after-sales maintenance operations.

[0040] Thus, the CNG gas supply system 100 according to the embodiment of the present application utilizes a combination of a bracket, gas cylinder 20, housing 30, and door. The double-door design solves the technical problem of difficult after-sales maintenance operations. Opening the door allows for re-tightening of the gas cylinder 20 fastening straps, facilitates accessory replacement, and facilitates observation of the internal structure of the cylinder assembly. Furthermore, the dual-ended discharge design for the gas cylinder 20 allows for quick discharge of the gas cylinder 20, improving the safety of the gas supply system.

[0041] Optionally, the gas supply system pipeline adopts φ12×1.5 specification stainless steel pipe, adopts large diameter valve, and the gas filling diameter of the entire pipeline system is ≥8mm. In this embodiment, the larger diameter of the gas supply system can improve the gas filling efficiency and greatly shorten the gas filling time.

[0042] According to one embodiment of the present application, the bracket includes a bottom bracket 11, a top bracket and an intermediate bracket 12, the top bracket and the bottom bracket 11 are spaced apart and arranged relative to each other, the intermediate bracket 12 is located between the top bracket and the bottom bracket 11 and is respectively connected to the top bracket and the bottom bracket 11, the outer shell 30 includes a top shell and two side shells, the top shell is located on the outside of the top bracket and is connected to the top bracket, and the side shell is located on the outside of the intermediate bracket 12 and is connected to the top shell.

[0043] That is, in this embodiment, the bracket can be mainly composed of a bottom bracket 11, a top bracket, and an intermediate bracket 12. The top bracket and the bottom bracket 11 are spaced apart and arranged relative to each other. The intermediate bracket 12 is located between the top bracket and the bottom bracket 11 and is connected to the top bracket and the bottom bracket 11 respectively. For example, the top bracket is located directly above the bottom bracket 11, the lower end of the intermediate bracket 12 can be connected to the bottom bracket 11, and the upper end of the intermediate bracket 12 can be connected to the top bracket. The intermediate bracket 12 can include a horizontal bracket and a vertical bracket. The horizontal bracket and the vertical bracket cooperate to divide the storage space into multiple space units, which can accommodate more gas cylinders 20 and is more stable.

[0044] Furthermore, the housing 30 can be primarily composed of a top shell and two side shells. The top shell is located outside the top bracket and connected to the top bracket, while the side shells are located outside the intermediate bracket 12 and connected to the top shell. For example, the top shell is located above the top bracket, and the side shells are located on the left and right sides of the intermediate bracket 12. The top shell and the side shells cooperate to provide protection for the gas cylinder 20 within the storage space.

[0045] In some specific embodiments of the present application, the gas cylinders 20 are arranged in multiple groups, with the multiple groups of gas cylinders 20 arranged sequentially from the top shell toward the bottom bracket 11. The multiple gas cylinders 20 in each group of gas cylinders 20 are arranged sequentially along the distribution direction of the two side shells. For example, the gas cylinders 20 may be arranged in four groups, with the four groups of gas cylinders 20 arranged from top to bottom, and the multiple gas cylinders 20 in each group of gas cylinders 20 arranged from left to right. In this embodiment, the use of more gas cylinders 20 can increase the gas supply.

[0046] According to one embodiment of the present application, a safety pressure relief device is installed at the end of the gas cylinder 20 to enhance safety. For example, a valve mounted on one end of the gas cylinder 20 is equipped with a safety pressure relief device, a fusible plug and bursting disc combination. The nominal bursting pressure of the bursting disc is 300 + 3 MPa, and the operating temperature of the fusible plug is 110°C ± 5°C. A PRD is installed at the rear of the gas cylinder 20, a fusible plug and bursting disc combination. The nominal bursting pressure of the bursting disc is 300 + 3 MPa, and the operating temperature of the fusible plug is 110°C ± 5°C.

[0047] In some specific embodiments of the present application, the cylinder 20 has rounded tops at both ends of the axial direction. That is, the front and rear tops of the cylinder 20 are rounded, which makes the appearance of the cylinder assembly match the streamlined design of the entire vehicle, visually appearing smoother and improving the product appearance. In other words, this embodiment can improve the product appearance, achieving a unique shape and beautiful appearance.

[0048] According to one embodiment of the present application, the portion of the housing 30 corresponding to the gas cylinder 20 at the corner within the storage space has an arcuate surface 31. The arcuate surface 31 corresponds to the outer circumference of the gas cylinder 20. For example, the upper left corner of the housing 30 is an arcuate corner, and the upper right corner is an arcuate corner. The circumferential shape of the gas cylinder 20 at the upper left corner within the storage space is also an arcuate shape, and the circumferential shape of the gas cylinder 20 at the upper right corner is also an arcuate shape. In this embodiment, by using the housing 30 with the arcuate surface 31, the fit and appearance can be improved, while also saving space.

[0049] Optionally, the radius R of the arc surface 31 is 221 mm.

[0050] In some specific embodiments of the present application, the bracket includes a support rod 13, and the door body includes a first door body 51 and a second door body 52. ​​One end of the first door body 51 is rotatably connected to the support rod 13, and the other end of the door body is rotatable relative to the support rod 13. The first door body 51 is used to open a portion of the opening. One end of the second door body 52 is rotatably connected to the support rod 13, and the other end of the second door body 52 is rotatable relative to the support rod 13. The second door body 52 is used to open another portion of the opening. For example, the front side of the bracket is provided with the support rod 13 extending from top to bottom, with the first door body 51 and the second door body 52 disposed on the front side; and the rear side of the bracket is provided with the support rod 13 extending from top to bottom, with the first door body 51 and the second door body 52 disposed on the rear side. Thus, the overall design adopts a four-door opening direction, with the door opening direction from the side shell toward the support rod 13. In this embodiment, by using multiple door bodies, the size of each door body can be reduced, and the door bodies in corresponding positions can be opened in environments with limited external space, which facilitates after-sales maintenance, installation and removal. Furthermore, by controlling the opening direction of the door, it is possible to prevent the door from occupying the left and right outer spaces of the outer shell 30 .

[0051] Optionally, a through observation window 53 is provided on the door body to facilitate viewing the condition of the gas cylinder 20 inside.

[0052] According to one embodiment of the present application, the first door body 51 and the second door body 52 are respectively connected to the support rod 13 by hinges. When one of the first door body 51 and the second door body 52 is closed, the rotation angle range of the other of the first door body 51 and the second door body 52 is 0°-180°. For example, the door body and the door frame can be connected by two stainless steel hinges; a single door body can be opened and closed to 180°; two door bodies on one side are opened at the same time and can be opened and closed to 90°. In this embodiment, by adopting a hinge structure, a large angle range of movement of a single door body can be achieved, avoiding the door body from interfering with operations such as transporting and repairing gas cylinders 20. When two door bodies on one side are opened at the same time and can be opened and closed to 90°, two relatively isolated spaces can be formed on both sides of the single door body, avoiding mutual interference when people are operating in the two spaces at the same time, thereby improving safety performance.

[0053] In some specific embodiments of the present application, the CNG gas supply system 100 further includes a stopper mounted on the support rod 13 and detachably connected to the door body. In this embodiment, the stopper can effectively prevent deformation or displacement of the door frame due to external vibrations during vehicle operation.

[0054] like Figure 4 and Figure 5 As shown, according to one embodiment of the present application, the position-limiting member includes a hasp 41 and / or a bolt 42. For example, when a single door is closed, two hasps 41 are used for locking, and two bolts 42 are used for position-limiting. In this embodiment, the use of hasps 41 or bolts 42 can reduce production costs.

[0055] In summary, the CNG gas supply system 100 according to the embodiment of the present application improves the appearance of the product, makes it match and coordinate with the streamline of the entire vehicle, and looks smoother visually; solves the problems of difficult after-sales maintenance operations and long refueling time; and at the same time improves the safety of the entire gas supply system, allowing the gas cylinder 20 to be discharged in a short time.

[0056] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A CNG gas supply system (100), characterized in that: include: A bracket, wherein the bracket has a receiving space; A gas cylinder (20), the gas cylinder (20) being installed in the receiving space, the gas cylinder (20) being discharged at two ends in the axial direction of the body; a housing (30), the housing (30) being disposed outside at least a portion of the bracket, the housing (30) having openings on both sides of the gas cylinder (20) in the axial direction; A door body is installed at the opening and can open or close the opening.

2. The CNG gas supply system (100) according to claim 1, characterized in that: The bracket comprises a bottom bracket (11), a top bracket and an intermediate bracket (12), wherein the top bracket and the bottom bracket (11) are spaced apart and arranged relative to each other, and the intermediate bracket (12) is located between the top bracket and the bottom bracket (11) and is connected to the top bracket and the bottom bracket (11) respectively. The housing (30) comprises a top shell and two side shells, wherein the top shell is located outside the top bracket and is connected to the top bracket, and the side shells are located outside the intermediate bracket (12) and are connected to the top shell.

3. The CNG gas supply system (100) according to claim 2, characterized in that: The gas cylinders (20) are arranged in groups, and the gas cylinders (20) in the groups are arranged in sequence along the direction from the top shell to the bottom bracket (11). The gas cylinders (20) in each group are arranged in sequence along the distribution direction of the two side shells.

4. The CNG gas supply system (100) according to claim 1, characterized in that: A safety pressure relief piece is installed at the end of the gas cylinder (20).

5. The CNG gas supply system (100) according to any one of claims 1 to 4, characterized in that: The gas cylinder (20) has arc tops at both ends in the axial direction of the body.

6. The CNG gas supply system (100) according to claim 5, characterized in that: A portion of the shell (30) corresponding to the gas cylinder (20) at a corner position in the receiving space has an arc surface (31), and the arc surface (31) corresponds to the outer peripheral surface of the gas cylinder (20).

7. The CNG gas supply system (100) according to claim 1, characterized in that: The bracket includes a support rod (13), and the door body includes: a first door body (51), one end of the first door body (51) being rotatably connected to the support rod (13), the other end of the door body being rotatable relative to the support rod (13), and the first door body (51) being used to open a portion of the opening; A second door body (52), one end of the second door body (52) is rotatably connected to the support rod (13), the other end of the second door body (52) is rotatable relative to the support rod (13), and the second door body (52) is used to open another part of the opening.

8. The CNG gas supply system (100) according to claim 7, characterized in that: The first door body (51) and the second door body (52) are respectively connected to the support rod (13) via hinges. When one of the first door body (51) and the second door body (52) is closed, the rotation angle range of the other of the first door body (51) and the second door body (52) is 0°-180°.

9. The CNG gas supply system (100) according to claim 7, characterized in that: Also includes: A limiting member is mounted on the support rod (13) and is detachably connected to the door body.

10. The CNG gas supply system (100) according to claim 9, characterized in that: The limiting member includes a buckle (41) and / or a bolt (42).

Images