CN218626401U

CN218626401U - LNG gas cylinder for vehicle

Info

Publication number: CN218626401U
Application number: CN202223219890.4U
Authority: CN
Inventors: 赵国椿; 党传磊; 郑磊明
Original assignee: Rizhao Xingye Auto Parts Co ltd
Current assignee: Rizhao Xingye Auto Parts Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-03-14
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses an automobile-used LNG gas cylinder relates to gas cylinder technical field, including outer courage barrel, be equipped with the inner bag barrel in the outer courage barrel, the bottom of inner bag barrel is equipped with the back and supports, the one end and the inner bag barrel rigid coupling of back support, the other end and the outer courage barrel of back support are pegged graft, the top of inner bag barrel is equipped with preceding support, the one end and the inner bag barrel rigid coupling of preceding support, the other end and the outer courage barrel swing joint of preceding support, be equipped with the sealing mechanism of sealed outer courage barrel on the preceding support, be equipped with the stop gear who limits inner bag barrel stroke on the preceding support, the top welded connection of outer courage barrel has outer courage front head, the top rigid coupling of preceding support has the distributor, set up outer courage barrel and inner bag barrel into plug-in connection, restrict the activity of inner bag barrel in outer courage barrel through set up stop gear in the front support, can reduce welding seam quantity, avoid inner bag thermal expansion to produce great stress concentration, the emergence welding seam fracture, and can prevent that the inner bag from drunkenness in the outer courage.

Description

LNG gas cylinder for vehicle

Technical Field

The utility model relates to a gas cylinder technical field, in particular to automobile-used LNG gas cylinder.

Background

LNG (liquefiednaturongas), an english abbreviation for liquefied natural gas. Natural gas is a combustible gas that is naturally produced in gas fields and is composed primarily of methane. LNG is condensed into liquid by cooling gaseous natural gas at atmospheric pressure to-162 ℃. The liquefied natural gas can greatly save storage and transportation space, and has the characteristics of large heat value, high performance and the like.

The LNG vehicle gas cylinder is a low-temperature heat-insulation pressure container and is structurally a double-layer gas cylinder. The inner bag is used for storing liquefied natural gas (LNG, -162 ℃) of low temperature liquid state, the outer bag is as the protective layer, the intermediate layer of the two forms super adiabatic system with cladding heat insulating material through evacuation, in the current gas cylinder, mostly adopt the bottom that outer bag and inner bag are connected to the back support, adopt the front-bearer to connect the top of outer bag and inner bag, but the connection of bottom is the activity grafting, and the connection at top is welded connection, the inner bag is because thermal energy can produce great stress concentration at low temperature, take place the welding seam fracture easily, produce the potential safety hazard.

Disclosure of Invention

To above defect, the utility model aims at providing an automobile-used LNG gas cylinder aims at solving among the prior art gas cylinder stress concentration big, the easy cracked technical problem of welding seam.

In order to solve the technical problem, the technical scheme of the utility model is that:

the utility model provides an automobile-used LNG gas cylinder, including outer courage barrel, be equipped with the inner bag barrel in the outer courage barrel, the bottom of inner bag barrel is equipped with the back and supports, the one end and the inner bag barrel rigid coupling of back support, the other end and the outer courage barrel of back support are pegged graft, the top of inner bag barrel is equipped with preceding support, the one end and the inner bag barrel rigid coupling of preceding support, the other end and the outer courage barrel swing joint of preceding support, be equipped with the sealing mechanism of sealed outer courage barrel on the preceding support, be equipped with the stop gear of restriction inner bag barrel stroke on the preceding support, the top welded connection of outer courage barrel has outer courage front head, the top rigid coupling of preceding support has the distributor.

Preferably, the limiting mechanism comprises a front stop block and a rear stop block, the front support is fixedly connected with the rear stop block which is pressed against the inner side of the outer liner front end socket, the top end of the outer liner front end socket is provided with the front stop block, the front support is fixedly connected with a pressing block which is pressed against the front stop block, and the front support is further provided with a first limiting block and a second limiting block which are used for limiting two sides of the front stop block respectively.

Preferably, the number of the front stoppers is three in the circumferential direction of the front support.

Preferably, the front block is made of plastic.

Preferably, in first stopper and the second stopper all extended to outer courage front cover, offered on the outer courage front cover with first stopper and second stopper match the recess that suits.

Preferably, the limiting mechanism comprises a locking nut, the front support is screwed with the locking nut, and the locking nut can be screwed to press against the front end socket of the outer container.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

the utility model discloses set up outer courage barrel and inner bag barrel into plug-in connection, limit the activity of inner bag barrel in outer courage barrel through set up stop gear in the front on supporting, can reduce welding seam quantity, avoid the inner bag thermal energy to produce great stress concentration, take place the welding seam fracture to can prevent inner bag drunkenness about and in outer courage, and this kind of mounting means has avoided the rigid coupling of outer courage barrel and inner bag barrel, reduces the potential safety hazard.

Drawings

Fig. 1 is a cross-sectional view of a first embodiment of the LNG cylinder for a vehicle according to the present invention;

fig. 2 is a schematic structural diagram of a first embodiment of the LNG tank for a vehicle according to the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the LNG tank for a vehicle.

In the figure, an outer container barrel 1, an outer container front end socket 10, an outer container rear end socket 11, an inner container barrel 2, an inner container front end socket 20, an inner container rear end socket 21, a rear support 3, a front support 4, a limiting mechanism 5, a pressing block 50, a front stop block 51, a rear stop block 52, a first limiting block 53, a second limiting block 54, a locking nut 55 and a distributor 6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The position that involves in this specification all uses the utility model relates to a position when vehicle LNG gas cylinder normally works is the standard, does not restrict its storage and the position when transporting, only represents relative position relation, does not represent absolute position relation.

The first embodiment is as follows:

as shown in the figures 1 and 2 together, the LNG gas cylinder for the vehicle comprises an outer container barrel 1 and an inner container barrel 2, wherein the top end of the outer container barrel 1 is welded and connected with an outer container front end socket 10, the bottom end of the outer container barrel 1 is welded and connected with an outer container rear end socket 11, the inner container barrel 2 is arranged in the outer container barrel 1, the bottom end of the inner container barrel 2 is welded and connected with an inner container rear end socket 21, the top end of the inner container barrel 2 is welded and connected with an inner container front end socket 20, the bottom end of the inner container barrel 2 is provided with a rear support 3, one end of the rear support 3 is fixedly connected with the inner container barrel 2, the other end of the rear support 3 is spliced with the outer container barrel 1, specifically, the bottom end of the inner container rear end socket 21 is welded and connected with an inserting rod, and the inner side of the outer container rear end socket 11 is welded and connected with an installation block, seted up on the installation piece with the slot that the inserted bar matches and suits, the top of inner bag barrel 2 is equipped with preceding support 4, the one end and the inner bag barrel 2 welded connection of preceding support 4, the other end and the outer bag barrel 1 swing joint of preceding support 4, be equipped with the sealing mechanism of sealed outer bag barrel 1 on the preceding support 4, concretely, the top of head 10 is the tube-shape before the outer bag, the ring channel has been seted up on the preceding support 4, be equipped with the sealing washer in the ring channel, the top inboard of head 10 before the outer bag is supported in the outside of sealing washer, be equipped with the stop gear 5 of restriction inner bag barrel 2 strokes on the preceding support 4, the top rigid coupling of preceding support 4 has distributor 6, distributor 6's structure and function are the common general knowledge that technical staff in the field should know, do not make unnecessary any more here.

The limiting mechanism 5 comprises a front stop block 51 and a rear stop block 52, the front support 4 is connected with the rear stop block 52 which is pressed against the inner side of the outer liner front end socket 10 in a welding mode, the front stop block 51 is arranged at the top end of the outer liner front end socket 10, the front stop block 51 is arranged in a fan-shaped ring mode, the front stop block 51 is preferably made of plastic, the number of the front stop block 51 is three along the circumferential direction of the front support 4, the front support 4 is connected with a pressing block 50 which is pressed against the front stop block 51 in a welding mode, and the front support 4 is further connected with a first limiting block 53 and a second limiting block 54 which are used for limiting two sides of the front stop block 51 in a welding mode.

When in use, the liner cylinder 2 is welded with the liner front end enclosure 20 and the liner rear end enclosure 21, the inserted link is welded with the liner rear end enclosure 21, the liner front end enclosure 20 is welded with the front support 4, the top end of the front support 4 is fixedly connected with the distributor 6, the liner cylinder 2 is arranged in the liner cylinder 1, the liner rear end enclosure 11 is welded with the mounting block, the liner rear end enclosure 11 is inserted on the liner rear end enclosure 21, the liner rear end enclosure 11 is welded with the liner cylinder 1, the front support 4 is welded with the rear stop block 52, the liner front end enclosure 10 is welded with the liner cylinder 1, the front stop block 51 is arranged at the top end of the liner front end enclosure 10, weld briquetting 50 and make it press preceding dog 51 on preceding support 4, with first stopper 53 and second stopper 54 welded connection respectively on preceding support 4, make its spacing positive dog 51's both sides, outer courage barrel 1 and inner bag barrel 2 set up to the plug-in connection, restrict the activity of inner bag barrel 2 in outer courage barrel 1 through set up stop gear 5 on preceding support 4, can reduce welding seam quantity, avoid the inner bag thermal energy to produce great stress concentration, take place the welding seam fracture, and can prevent the inner bag drunkenness from top to bottom in outer courage, and the rigid coupling of outer courage barrel 1 and inner bag barrel 2 has been avoided to this kind of mounting means, reduce the potential safety hazard.

Preferably, first stopper 53 and second stopper 54 all extend to outer courage preceding head 10 in, offer on the outer courage preceding head 10 with first stopper 53 and second stopper 54 match the recess that suits, during the use, can prevent that the inner bag from in the inner periphery drunkenness of outer courage, taking place the potential safety hazard.

Example two:

as shown in fig. 3, the limiting mechanism 5 comprises a locking nut 55, the locking nut 55 is screwed on the front support 4, the locking nut 55 can be screwed to press the front end socket 10 of the outer liner, and when the front end socket is used, the locking nut 55 is screwed to limit the front end socket 10 of the outer liner, so that the number of welding seams is further reduced, and stress concentration is reduced.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims

1. The utility model provides a vehicle LNG gas cylinder, includes outer courage barrel, be equipped with inner bag barrel in the outer courage barrel, the bottom of inner bag barrel is equipped with the back and supports, the one end of back support with inner bag barrel rigid coupling, the other end of back support with outer courage barrel pegs graft, its characterized in that, the top of inner bag barrel is equipped with preceding support, the one end of preceding support with inner bag barrel rigid coupling, the other end of preceding support with outer courage barrel swing joint, be equipped with on the preceding support and seal the sealing mechanism of outer courage barrel, be equipped with the restriction on the preceding support the stop gear of inner bag barrel stroke, the top welded connection of outer courage barrel has outer courage front end socket, the top rigid coupling of preceding support has the distributor.

2. The LNG gas cylinder for the vehicle as claimed in claim 1, wherein the limiting mechanism comprises a front stop and a rear stop, the front support is fixedly connected with the rear stop which presses against the inner side of the front end socket of the outer liner, the top end of the front end socket of the outer liner is provided with the front stop, the front support is fixedly connected with a pressing block which presses against the front stop, and the front support is further provided with a first limiting block and a second limiting block which respectively limit two sides of the front stop.

3. The LNG cylinder for vehicles according to claim 2, wherein the front stoppers are provided in three in the circumferential direction of the front support.

4. The LNG cylinder for vehicles as claimed in claim 2, wherein the front stopper is made of plastic.

5. The LNG cylinder for the vehicle as claimed in claim 2, wherein the first limiting block and the second limiting block both extend into the outer liner front head, and a groove matched with the first limiting block and the second limiting block is formed in the outer liner front head.

6. The LNG gas cylinder for the vehicle as claimed in claim 1, wherein the limiting mechanism comprises a locking nut, the locking nut is screwed on the front support, and the locking nut can be screwed and pressed against the front end socket of the outer liner.