CN216591032U

CN216591032U - Liquid hydrogen cylinder and hydrogen fuel cell system

Info

Publication number: CN216591032U
Application number: CN202123213662.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Weishi Energy Technology Co Ltd
Current assignee: Weishi Energy Technology Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-24
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a liquid hydrogen cylinder and a hydrogen fuel cell system, wherein the liquid hydrogen cylinder comprises: an inner barrel and an outer barrel, the inner barrel being mounted within the outer barrel and radially spaced apart from the outer barrel; an adiabatic support assembly supported radially between the inner drum and the outer drum and including first and second support structures spaced apart along an axial direction of the inner drum; the outer end of the first supporting structure is fixedly connected with the outer cylinder, the inner end of the first supporting structure is in sliding fit with the inner cylinder, and the outer end and the inner end of the second supporting structure are fixedly connected with the outer cylinder and the inner cylinder respectively. According to the liquid hydrogen gas cylinder, the first supporting structure and the second supporting structure which are used for radial supporting are arranged between the inner cylinder and the outer cylinder, so that the inner cylinder can be stably supported in the outer cylinder, and the heat leakage quantity of the liquid hydrogen gas cylinder is favorably reduced and the heat insulation performance of the gas cylinder is ensured through the supporting mode.

Description

Liquid hydrogen cylinder and hydrogen fuel cell system

Technical Field

The utility model relates to the technical field of gas supply systems, in particular to a liquid hydrogen cylinder and a hydrogen fuel cell system with the same.

Background

In the related technology, the hydrogen fuel cell system has wide application prospect in the field of power systems of heavy-duty vehicles, and the vehicle-mounted liquid hydrogen cylinder is used for providing required fuel for a vehicle-mounted hydrogen storage system. The supporting structure needs to be arranged between the inner cylinder body and the outer cylinder body of the vehicle-mounted liquid hydrogen cylinder, the head and the tail of the traditional gas cylinder supporting structure are in a neck pipe form, the defects are that heat leakage is large, the heat insulation performance of the gas cylinder is influenced, meanwhile, the supporting structure is complex, the installation is inconvenient, and an improved space exists.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model aims to provide a liquid hydrogen cylinder, wherein the inner cylinder and the outer cylinder are radially supported through a heat insulation support assembly, the structure is simple, the heat leakage amount is small, and the heat insulation performance of the cylinder is favorably ensured.

The liquid hydrogen cylinder according to the embodiment of the utility model comprises: the inner cylinder is arranged in the outer cylinder and is spaced from the outer cylinder in the radial direction; an adiabatic support assembly supported radially between the inner and outer drums and including first and second support structures spaced apart in an axial direction of the inner drum; the outer end of the first supporting structure is fixedly connected with the outer cylinder, the inner end of the first supporting structure is in sliding fit with the inner cylinder, and the outer end and the inner end of the second supporting structure are fixedly connected with the outer cylinder and the inner cylinder respectively.

According to the liquid hydrogen cylinder provided by the embodiment of the utility model, the first supporting structure and the second supporting structure for radial supporting are arranged between the inner cylinder and the outer cylinder, so that the inner cylinder can be stably supported in the outer cylinder, and the heat leakage quantity of the liquid hydrogen cylinder is favorably reduced and the heat insulation performance of the cylinder is ensured through the supporting mode.

According to some embodiments of the utility model, the first support structure comprises: a first insulating pipe member; the first sleeve assembly is sleeved at the inner end of the first heat insulation pipe fitting and is in sliding fit with the inner cylinder; and the second sleeve component is sleeved at the outer end of the first heat insulation pipe fitting and is fixedly connected with the outer barrel.

According to some embodiments of the utility model, the first sleeve assembly comprises a first sleeve, a first base plate and a sliding pad, the first base plate and the sliding pad are connected in an overlapping manner, and the first sleeve is arranged on one side of the first base plate, which is far away from the sliding pad; the first sleeve is sleeved at the inner end of the first heat insulation pipe fitting, and the sliding pad is in sliding fit with the outer peripheral wall of the inner cylinder.

According to the liquid hydrogen cylinder provided by the embodiment of the utility model, the second sleeve component comprises a second sleeve and a second base plate, and the second sleeve is connected with one side, facing the inner cylinder, of the second base plate; wherein the urceolus is equipped with first mounting hole, the laminating of second backing plate is fixed in the periphery wall of urceolus, the second sleeve pipe passes first mounting hole extends in the urceolus in order to with first insulating pipe spare links to each other.

According to some embodiments of the liquid hydrogen cylinder of the present invention, the first heat insulating pipe comprises a first heat insulating pipe and a first heat insulating member and a second heat insulating member which are installed in the first heat insulating pipe, and two ends of the first heat insulating pipe are respectively in sleeve fit with the first sleeve component and the second sleeve component; the first heat insulating piece and the second heat insulating piece are distributed from inside to outside in sequence along the radial direction of the inner cylinder, and the thickness of the first heat insulating piece is smaller than that of the second heat insulating piece.

According to some embodiments of the utility model, the second support structure comprises: a second insulating pipe member; the third sleeve assembly is sleeved at the inner end of the second heat-insulating pipe fitting and is fixedly connected with the inner cylinder; and the fourth sleeve component is sleeved at the outer end of the second heat insulation pipe fitting and is fixedly connected with the outer barrel.

According to the liquid hydrogen bottle provided by the embodiment of the utility model, the third sleeve component comprises a third sleeve and a third base plate, and the third sleeve is arranged on one side of the third base plate, which is far away from the inner cylinder; the third sleeve is sleeved at the inner end of the second heat-insulating pipe fitting, and the third base plate is fixedly connected with the outer peripheral wall of the inner barrel.

According to the liquid hydrogen cylinder provided by the embodiment of the utility model, the fourth sleeve assembly comprises a fourth sleeve and a fourth base plate, and the fourth sleeve is connected with one side, facing the inner cylinder, of the fourth base plate; the outer barrel is provided with a second mounting hole, the fourth base plate is fixed to the outer peripheral wall of the outer barrel in an attaching mode, and the fourth sleeve penetrates through the second mounting hole to extend into the outer barrel and is connected with the second heat insulation pipe fitting.

According to some embodiments of the utility model, the second heat-insulating pipe member includes a second heat-insulating pipe and a third heat-insulating member and a fourth heat-insulating member mounted in the second heat-insulating pipe, and both ends of the second heat-insulating pipe are respectively fitted to the third sleeve assembly and the fourth sleeve assembly; the third heat-insulating member and the fourth heat-insulating member are sequentially distributed from inside to outside in the radial direction of the inner cylinder, and the thickness of the third heat-insulating member is smaller than that of the fourth heat-insulating member.

The utility model also provides a hydrogen fuel cell system.

According to the hydrogen fuel cell system of the embodiment of the utility model, the liquid hydrogen cylinder of any one of the embodiments is provided.

The advantages of the hydrogen fuel cell system and the liquid hydrogen cylinder are the same compared with the prior art, and the detailed description is omitted.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of the construction of a liquid hydrogen cylinder according to an embodiment of the utility model;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

FIG. 3 is an enlarged view at C in FIG. 2;

FIG. 4 is a cross-sectional view taken at D-D of FIG. 2;

FIG. 5 is a cross-sectional view at E-E in FIG. 4;

FIG. 6 is a cross-sectional view taken at B-B of FIG. 1;

FIG. 7 is an enlarged view at F of FIG. 6;

FIG. 8 is a cross-sectional view at G-G of FIG. 6;

FIG. 9 is a cross-sectional view taken at H-H in FIG. 8;

fig. 10 is a schematic end view of a liquid hydrogen cylinder according to an embodiment of the utility model.

Reference numerals:

a liquid hydrogen gas cylinder 100 is provided,

the heat-insulating support assembly (1) is provided with a heat-insulating support,

a first support structure 11, a first heat insulating pipe 111, a first heat insulating pipe 1111, a first heat insulating member 1112, a second heat insulating member 1113, a first bushing assembly 112, a first bushing 1121, a first shim plate 1122, a sliding pad 1123, a second bushing assembly 113, a second bushing 1131, a second shim plate 1132,

a second support structure 12, a second insulating tube member 121, a second insulating tube 1211, a third insulating member 1212, a fourth insulating member 1213, a third jacket assembly 122, a third jacket 1221, a third spacer 1222, a fourth jacket assembly 123, a fourth jacket 1231, a fourth spacer 1232,

a bolt 21, a nut 22, a spring washer 23, a countersunk bolt 24,

the inner cylinder 3, the outer cylinder 4, a first mounting hole 41 and a second mounting hole 42.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following describes a liquid hydrogen cylinder 100 according to an embodiment of the present invention with reference to fig. 1 to 10, and the inner cylinder 3 and the outer cylinder 4 of the liquid hydrogen cylinder 100 are supported and installed radially by the heat insulation support assembly 1, so that the structure is simple, the installation is convenient, and the amount of heat leakage actually generated by radial support through the heat insulation support assembly 1 is smaller than that of the conventional head-to-tail neck support, which is beneficial to ensure the heat insulation performance of the cylinder.

As shown in fig. 1 to 10, a liquid hydrogen cylinder 100 according to an embodiment of the present invention includes: an inner cylinder 3, an outer cylinder 4 and a heat insulation support component 1.

As shown in fig. 1, the inner cylinder 3 is installed in the outer cylinder 4, that is, the inner cylinder 3 is formed as an inner containing space of the liquid hydrogen cylinder 100 for storing liquid hydrogen, and the outer cylinder 4 is formed as an outer shell of the liquid hydrogen cylinder 100 for protecting the inner cylinder 3 located inside, thereby ensuring the stability of the inside of the liquid hydrogen cylinder 100.

As shown in fig. 1, the inner cylinder 3 and the outer cylinder 4 are radially spaced apart, that is, the inner cylinder 3 and the outer cylinder 4 are not in direct contact with each other, so that the outer cylinder 4 can be deformed by a certain amount of collapse toward a space between the inner cylinder 3 and the outer cylinder 4 when being impacted by an external force, thereby absorbing the external impact force, avoiding the outer cylinder 4 from being in direct rigid contact with the inner cylinder 3, and ensuring the safety of the inner cylinder 3. And the inner cylinder 3 can not conduct heat with the outer cylinder 4 directly, so that the heat leakage quantity of the inner cylinder 3 can be reduced, and the heat insulation performance of the liquid hydrogen cylinder 100 can be ensured.

The heat insulation support assembly 1 is supported between the inner cylinder 3 and the outer cylinder 4 along the radial direction, and the heat insulation support assembly 1 comprises a first support structure 11 and a second support structure 12 which are arranged along the axial direction of the inner cylinder 3 at intervals, namely, the inner cylinder 3 and the outer cylinder 4 can be simultaneously installed and supported through the first support structure 11 and the second support structure 12, so that the support fixation is realized at different positions of the inner cylinder 3 along the axial direction, and the support stability of the inner cylinder 3 and the outer cylinder 4 is improved.

And when the design is specific, the first support structure 11 and the second support structure 12 can be arranged in plurality to ensure the stability of the support. As shown in fig. 2, the number of the first support structures 11 may be four, and the four first support structures 11 are distributed at intervals in the circumferential direction of the inner cylinder 3 to support different positions in the circumferential direction of the inner cylinder 3, specifically, as shown in fig. 2, two first support structures 11 are located above the outer circumferential wall of the inner cylinder 3, and the two first support structures 11 are symmetrically distributed on the left and right sides above the inner cylinder 3, and an included angle of the two first support structures 11 with respect to the vertical direction (only representing the direction in the drawing, which does not cause limitation to the actual design) may be 45 °; the other two first supporting structures 11 are located below the outer peripheral wall of the inner cylinder 3, the two first supporting structures 11 are symmetrically distributed on the left side and the right side below the inner cylinder 3, and an included angle between the two first supporting structures 11 and the vertical direction (only the direction in fig. 2 is shown, and no limitation is caused to the actual design) may be 30 °. Similarly, as shown in fig. 6, four second support structures 12 may be provided, and the four second support structures 12 are distributed at intervals in the circumferential direction of the inner drum 3 to support different positions in the circumferential direction of the inner drum 3, specifically, as shown in fig. 6, two second support structures 12 are located above the outer circumferential wall of the inner drum 3, and the two second support structures 12 are symmetrically distributed on the left and right sides above the inner drum 3, and the included angle of the two second support structures 12 with respect to the vertical direction (only representing the direction in the drawing, which does not cause limitation to the actual design) may be 45 °; the other two second support structures 12 are located below the outer peripheral wall of the inner cylinder 3, the two second support structures 12 are symmetrically distributed on the left and right sides below the inner cylinder 3, and an included angle between the two second support structures 12 and a vertical direction (only the direction in fig. 6 is shown, and no limitation is caused to actual design) may be 30 °.

In this way, the plurality of first support structures 11 and the plurality of second support structures 12 can simultaneously play a supporting role between the inner cylinder 3 and the outer cylinder 4 to ensure the relative stability of the inner cylinder 3 and the outer cylinder 4. During specific design, the plurality of first supporting structures 11 and the plurality of second supporting structures 12 can be arranged in the axial direction of the inner cylinder 3 in a one-to-one correspondence manner, so that the supporting force at each position in the axial direction of the inner cylinder 3 is relatively balanced.

Wherein, the outer end of the first supporting structure 11 is fixedly connected with the outer cylinder 4, that is, the outer end of the first supporting structure 11 and the outer cylinder 4 are always in a relatively stable state, and the relative position of the two is kept unchanged; and the inner end of the first support structure 11 is in sliding fit with the inner barrel 3, i.e. the inner end of the first support structure 11 can slide to different positions relative to the inner barrel 3. Meanwhile, the outer end of the second support structure 12 is fixedly connected with the outer cylinder 4, that is, the outer end of the second support structure 12 and the outer cylinder 4 are always in a relatively stable state, and the relative positions of the two are kept unchanged; and the inner end of the second supporting structure 12 is fixedly connected with the inner cylinder 3, i.e. the inner end of the second supporting structure 12 and the inner cylinder 3 are always in a relatively stable state. That is to say, first supporting structure 11 and second supporting structure 12 are both fixed relative to outer tube 4, and first supporting structure 11 can slide relative to inner tube 3, and second supporting structure 12 is fixed relative to inner tube 3, so, when inner tube 3 changes because the inside temperature state, when the deflection that produces expend with heat and contract with cold, second supporting structure 12 is connected steadily between inner tube 3 and outer tube 4 all the time, and first supporting structure 11 not only can play the effect of support between inner tube 3 and outer tube 4, and can take place relative slip along with the deformation of inner tube 3, thereby make adiabatic supporting component 1 can adapt to the inner tube 3 because the deformation that the temperature change produced, and then avoid adiabatic supporting component 1 can't rationally adapt to and appear the unstable condition of structural deformation support when the inner tube 3 temperature change appears, improve the stability of liquid hydrogen gas cylinder 100.

The heat insulation supporting component 1 can be provided with a heat insulation material, so that the heat insulation material can play a heat insulation role between the inner cylinder 3 and the outer cylinder 4, the heat in the liquid hydrogen stored in the inner cylinder 3 is prevented from being excessively transferred to the outer cylinder 4 and diffused to the outside, the heat leakage quantity of the inner cylinder 3 is reduced, the heat insulation performance of the liquid hydrogen cylinder 100 is ensured, and the heat insulation supporting component 1 is simple in structure and convenient to install.

According to the liquid hydrogen cylinder 100 of the embodiment of the utility model, the first support structure 11 and the second support structure 12 for radial support are arranged between the inner cylinder 3 and the outer cylinder 4, so that the inner cylinder 3 can be stably supported in the outer cylinder 4, and the heat leakage of the liquid hydrogen cylinder 100 can be reduced by the support mode, and the heat insulation performance of the cylinder can be ensured.

In some embodiments, as shown in fig. 3, the first support structure 11 includes a first insulating thermal pipe 111, a first sleeve assembly 112, and a second sleeve assembly 113.

The first sleeve assembly 112 is sleeved at the inner end of the first thermal insulation pipe 111, that is, the inner end of the first thermal insulation pipe 111 extends into the first sleeve assembly 112 to be fixedly connected with the first sleeve assembly 112, for example, the inner end of the first thermal insulation pipe 111 can be connected with the first sleeve assembly 112 through a connecting structure, or welded; the first sleeve assembly 112 is slidably fitted to the inner cylinder 3, for example, the inner surface of the first sleeve assembly 112 is in contact with the outer peripheral wall of the inner cylinder 3 and is slidable relative thereto. In this way, both the first insulating pipe member 111 and the first sleeve assembly 112 can be made slidable relative to the inner tube 3.

The second sleeve component 113 is sleeved at the outer end of the first heat insulating pipe 111, that is, the outer end of the first heat insulating pipe 111 extends into the second sleeve component 113 to be fixedly connected with the second sleeve component 113, for example, the outer end of the first heat insulating pipe 111 is connected with the second sleeve component 113 through a connecting structure, or is connected by welding; the second sleeve member 113 is fixedly connected to the outer cylinder 4, for example, the second sleeve member 113 may be welded to the outer cylinder 4. In this way, the relative positions of the second heat insulating pipe 121 and the second sleeve member 113 with respect to the outer cylindrical housing 4 can be kept fixed.

In some embodiments, as shown in fig. 4, the first bushing assembly 112 includes a first bushing 1121, a first backing plate 1122, and a sliding pad 1123, wherein the first bushing 1121 is configured as a circular tube, and an inner diameter of the first bushing 1121 is greater than and close to an outer diameter of an inner end of the first insulating pipe 111, so that the first insulating pipe 111 can extend into the first bushing 1121 to be fixedly connected to the first bushing 1121. The first pad plate 1122 is fixedly connected to the first sleeve tube 1121, for example, the first pad plate 1122 may be welded to the first sleeve tube 1121, or both of them may be integrally formed, as shown in fig. 4, and the first sleeve tube 1121 is located on a side of the first pad plate 1122 facing away from the sliding pad 1123. In which the first pad 1122 and the sliding pad 1123 may be connected by a connecting member, as shown in fig. 4 and 5, fixedly connected by using a counter bolt 24, and the position of the counter bolt 24 is shown in fig. 10.

As shown in fig. 4, the first bushing 1121 is sleeved on the inner end of the first heat insulating pipe 111, so that the first bushing assembly 112 and the first heat insulating pipe 111 are fixed relatively, and they can be connected as a whole and installed between the inner cylinder 3 and the outer cylinder 4 together. Wherein the sliding pad 1123 is located on the side of the first pad plate 1122 facing the inner cylinder 3, and after the specific installation, the sliding pad 1123 is in sliding fit with the outer peripheral wall of the inner cylinder 3. As shown in fig. 4, the first sleeve 1121 is connected to the first heat insulating pipe 111 by a bolt 21, a nut 22 and a spring washer 23, so that the first sleeve 1121 and the first heat insulating pipe 111 can be detached from each other.

It should be noted that the sliding pad 1123 is made of wear-resistant and low-temperature-resistant material, so that the sliding pad 1123 still has a good structural state after sliding relative to the inner cylinder 3 for a long time, for example, the sliding pad 1123 adopts a modified polytetrafluoroethylene gasket, and the friction force between the inner cylinder 3 and the support during thermal expansion and cold contraction is reduced by using the advantage of small friction coefficient of the material, so as to improve the fatigue resistance of the support structure. Meanwhile, the first sleeve 1121 is made of an epoxy glass tube, and heat leakage at the supporting position can be effectively reduced by virtue of the characteristic of low heat conductivity coefficient.

In some embodiments, second sleeve assembly 113 includes a second sleeve 1131 and a second backing plate 1132, the second sleeve 1131 is configured as a circular tube, and the inner diameter of second sleeve 1131 is larger than and close to the outer diameter of the outer end of first insulating member 111, so that first insulating member 111 can extend into second sleeve 1131 to be fixedly connected to second sleeve 1131. Second sleeve 1131 and second backing plate 1132 are fixedly connected, for example, the end of second sleeve 1131 can be welded to the surface of second backing plate 1132, or they can be integrally formed, so that second sleeve 1131 and second backing plate 1132 can be used together. Wherein the second sleeve 1131 is connected with a side of the second backing plate 1132 facing the inner cylinder 3.

As shown in fig. 3, the outer cylinder 4 is provided with a first mounting hole 41, the first mounting hole 41 penetrates along the circumferential wall of the outer cylinder 4 in the radial direction, when in actual installation, the second sleeve 1131 can extend from the outside of the outer cylinder 4 to the inside of the outer cylinder 4 from the first mounting hole 41 to be connected with the first heat insulation pipe 111, so that the second sleeve 1131 is fixedly connected with the first heat insulation pipe 111, the second backing plate 1132 is located outside the outer cylinder 4, and the width of the second backing plate 1132 is greater than the aperture of the first mounting hole 41, so that the second backing plate 1132 can play a role of closing outside the first mounting hole 41, and the second backing plate 1132 is attached to and welded to the circumferential wall of the outer cylinder 4.

In some embodiments, as shown in fig. 4 and 5, the first insulation pipe member 111 includes a first insulation pipe 1111, a first insulation member 1112, and a second insulation member 1113, and the first insulation member 1112 and the second insulation member 1113 are installed in the first insulation pipe 1111. The first heat insulation pipe 1111 is used for being connected and matched with the first sleeve 1121 and the second sleeve 1131, that is, the inner end of the first heat insulation pipe 1111 extends into the first sleeve 1121 as shown in fig. 4 and 5, and the inner end of the first heat insulation pipe 1111 is detachably connected with the first sleeve 1121 through a bolt 21, a nut 22 and a spring washer 23, so that the first heat insulation pipe 1111 and the first sleeve 1121 can be flexibly disassembled and assembled, and the outer end of the first heat insulation pipe 1111 extends into the second sleeve 1131 and can be welded and connected with the second sleeve 1131, so that the first heat insulation pipe 1111 and the second sleeve 1131 can be fixedly connected.

Among them, the first thermal insulator 1112 and the second thermal insulator 1113 can perform a thermal insulation function between the inner cylinder 3 and the outer cylinder 4 to insulate the excessive heat transfer from the inner cylinder 3 to the outer cylinder 4, thereby being beneficial to reducing the heat leakage of the liquid hydrogen cylinder 100. Meanwhile, the second sleeve 1131 is made of epoxy glass tube, and the heat leakage at the supporting position can be effectively reduced by virtue of the characteristic of low heat conductivity coefficient.

The first heat insulating piece 1112 and the second heat insulating piece 1113 are distributed in sequence from inside to outside along the radial direction of the inner barrel 3, namely the first heat insulating piece 1112 is positioned on the inner side of the second heat insulating piece 1113, so that when the heat of the inner barrel 3 is transferred from inside to outside, the heat needs to sequentially pass through the first heat insulating piece 1112 and the second heat insulating piece 1113, namely the difficulty of heat transfer is increased, and the thickness of the first heat insulating piece 1112 is smaller than that of the second heat insulating piece 1113, so that the first heat insulating piece 1112 can play a role in heat insulation and can play a certain buffering role. The first thermal insulator 1112 and the second thermal insulator 1113 are made of different materials so that the first thermal insulator and the second thermal insulator have different structural properties. For example, the first thermal insulator 1112 is a double-layer structure, one layer is aluminum foil, the other layer is fiberglass paper, and the second thermal insulator 1113 is made of fiberglass cotton.

In some embodiments, as shown in fig. 6, the second support structure 12 includes a second insulating tubing 121, a third cannula assembly 122, and a fourth cannula assembly 123.

The third casing assembly 122 is sleeved at the inner end of the second heat insulation pipe 121, that is, the inner end of the second heat insulation pipe 121 extends into the third casing assembly 122 to be fixedly connected with the third casing assembly 122, for example, the inner end of the second heat insulation pipe 121 can be connected with the third casing assembly 122 through a connecting structure, or welded; the third sleeve assembly 122 is fixedly connected to the inner barrel 3, for example, the inner surface of the third sleeve assembly 122 is welded to the outer peripheral wall of the inner barrel 3. In this way, the second insulating pipe 121 and the third jacket assembly 122 can be fixed relative to the inner tube 3.

The fourth sleeve assembly 123 is sleeved on the outer end of the second heat insulation pipe 121, that is, the outer end of the second heat insulation pipe 121 extends into the fourth sleeve assembly 123 to be fixedly connected with the fourth sleeve assembly 123, for example, the outer end of the second heat insulation pipe 121 is connected with the fourth sleeve assembly 123 through a connecting structure, or is connected by welding; the fourth sleeve assembly 123 is fixedly connected to the outer cylinder 4, for example, the fourth sleeve assembly 123 may be welded to the outer cylinder 4. In this way, the relative positions of the second heat insulating pipe member 121 and the fourth sleeve member 123 to the outer tub 4 can be kept fixed.

In some embodiments, as shown in fig. 7 and 8, the third casing assembly 122 includes a third casing 1221 and a third backing plate 1222, wherein the third casing 1221 is configured as a circular tube, and the inner diameter of the third casing 1221 is larger than and close to the outer diameter of the inner end of the second heat-insulating pipe member 121, so that the second heat-insulating pipe member 121 can extend into the third casing 1221 to be fixedly connected with the third casing 1221. The third pad 1222 is fixedly connected to the third sleeve 1221, for example, the third pad 1222 and the third sleeve 1221 can be welded together, or both can be integrally formed.

As shown in fig. 7, 8 and 9, the third sleeve 1221 is sleeved on the inner end of the second heat-insulating pipe 121, so that the third sleeve 122 and the second heat-insulating pipe 121 are fixed relatively, and they can be connected as a whole and installed between the inner cylinder 3 and the outer cylinder 4. Wherein, as shown in fig. 7 and 8, the third sleeve 1221 is fittingly connected to the second heat insulating pipe member 121 by the bolt 21, the nut 22 and the spring washer 23 so that the third sleeve 1221 and the second heat insulating pipe member 121 are relatively detachable, wherein the third gasket 1222 is weldably connected to the outer peripheral wall of the inner cylinder 3.

In some embodiments, as shown in fig. 7, the fourth sleeve assembly 123 includes a fourth sleeve 1231 and a fourth backing plate 1232, the fourth sleeve 1231 is configured to be a round pipe, and the inner diameter of the fourth sleeve 1231 is larger than and close to the outer diameter of the outer end of the second insulating pipe 121, so that the second insulating pipe 121 can extend into the fourth sleeve 1231 to be fixedly connected with the fourth sleeve 1231. The fourth sleeve 1231 and the fourth backing plate 1232 are fixedly connected, for example, the end of the fourth sleeve 1231 can be welded to the surface of the fourth backing plate 1232, or the end of the fourth sleeve 1231 and the end of the fourth backing plate 1232 can be integrally formed, so that the fourth sleeve 1231 and the fourth backing plate 1232 can be used together. Wherein, the fourth sleeve 1231 is connected with one side of the fourth backing plate 1232 facing the inner cylinder 3.

As shown in fig. 7, the outer cylinder 4 is provided with a second mounting hole 42, the second mounting hole 42 penetrates in the radial direction along the peripheral wall of the outer cylinder 4, when in actual installation, the fourth sleeve 1231 can be extended from the outside of the outer cylinder 4 from the second mounting hole 42 to the inside of the outer cylinder 4 to be connected with the second heat insulation pipe 121, so that the fourth sleeve 1231 is fixedly connected with the second heat insulation pipe 121, the fourth backing plate 1232 is located outside the outer cylinder 4, and the width dimension of the fourth backing plate 1232 is greater than the aperture of the second mounting hole 42, so that the fourth backing plate 1232 can close the outside of the second mounting hole 42, and the fourth backing plate 1232 is attached to and welded to the peripheral wall of the outer cylinder 4.

In some embodiments, as shown in fig. 8 and 9, the second insulation pipe member 121 includes a second insulation tube 1211, a third insulation member 1212, and a fourth insulation member 1213, and the third insulation member 1212 and the fourth insulation member 1213 are installed in the second insulation tube 1211. The second thermal insulation pipe 1211 is used for being connected and matched with the third sleeve 1221 and the fourth sleeve 1231, that is, the inner end of the second thermal insulation pipe 1211 extends into the third sleeve 1221 and is detachably connected with the third sleeve 1221 through the bolt 21, the nut 22 and the spring washer 23, so that the second thermal insulation pipe 1211 and the third sleeve 1221 can be flexibly disassembled and assembled, and the outer end of the second thermal insulation pipe 1211 extends into the fourth sleeve 1231 and is connected with the fourth sleeve 1231 in a welding mode, so that the second thermal insulation pipe 1211 and the fourth sleeve 1231 can be fixedly connected.

Among them, the third thermal insulation member 1212 and the fourth thermal insulation member 1213 can perform a thermal insulation function between the inner cylinder 3 and the outer cylinder 4 to insulate the excessive heat transfer from the inner cylinder 3 to the outer cylinder 4, thereby facilitating reduction of the heat leakage of the liquid hydrogen cylinder 100.

The third thermal insulation member 1212 and the fourth thermal insulation member 1213 are sequentially distributed from inside to outside along the radial direction of the inner cylinder 3, that is, the third thermal insulation member 1212 is located inside the fourth thermal insulation member 1213, so that when the heat of the inner cylinder 3 is transferred from inside to outside, the heat needs to sequentially pass through the third thermal insulation member 1212 and the fourth thermal insulation member 1213, that is, the difficulty of heat transfer is increased, and the thickness of the third thermal insulation member 1212 is smaller than that of the fourth thermal insulation member 1213, so that the third thermal insulation member 1212 not only can play a thermal insulation role, but also can play a certain buffering role. Wherein the third thermal-insulation member 1212 and the fourth thermal-insulation member 1213 are made of different materials so that they have different structural properties. For example, the third thermal insulation member 1212 has a double-layer structure, one layer is aluminum foil, the other layer is glass fiber paper, and the fourth thermal insulation member 1213 is made of glass fiber cotton.

The utility model also provides a hydrogen fuel cell system.

According to the hydrogen fuel cell system of the embodiment of the utility model, the liquid hydrogen cylinder 100 of any one of the embodiments is arranged, the first support structure 11 and the second support structure 12 for radial support are arranged between the inner cylinder 3 and the outer cylinder 4, so that the inner cylinder 3 can be stably supported in the outer cylinder 4, and the heat leakage of the liquid hydrogen cylinder 100 can be reduced through the support mode, and the heat insulation performance of the cylinder is ensured.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the utility model.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the utility model, "above", "over" and "above" a first feature in a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A liquid hydrogen gas cylinder (100), characterized by comprising:

an inner barrel (3) and an outer barrel (4), the inner barrel (3) being mounted within the outer barrel (4) and being radially spaced from the outer barrel (4);

an adiabatic support assembly (1), the adiabatic support assembly (1) being supported radially between the inner drum (3) and the outer drum (4), and the adiabatic support assembly (1) comprising a first support structure (11) and a second support structure (12) arranged spaced apart in an axial direction of the inner drum (3); wherein

The outer end of the first supporting structure (11) is fixedly connected with the outer cylinder (4) and the inner end of the first supporting structure is in sliding fit with the inner cylinder (3), and the outer end and the inner end of the second supporting structure (12) are fixedly connected with the outer cylinder (4) and the inner cylinder (3) respectively.

2. The liquid hydrogen cylinder (100) according to claim 1, characterized in that the first support structure (11) comprises:

a first insulating pipe member (111);

the first sleeve component (112) is sleeved at the inner end of the first heat insulation pipe fitting (111), and the first sleeve component (112) is in sliding fit with the inner barrel (3);

the second sleeve component (113), the outer end of first adiabatic pipe fitting (111) is located in the cover of second sleeve component (113), second sleeve component (113) with outer cylinder (4) fixed link to each other.

3. The liquid hydrogen cylinder (100) according to claim 2, wherein the first sleeve component (112) comprises a first sleeve (1121), a first backing plate (1122) and a sliding pad (1123), the first backing plate (1122) and the sliding pad (1123) are connected in an overlapping manner, and the first sleeve (1121) is arranged on the side of the first backing plate (1122) facing away from the sliding pad (1123); wherein

The first sleeve (1121) is sleeved at the inner end of the first heat insulation pipe fitting (111), and the sliding pad (1123) is in sliding fit with the outer peripheral wall of the inner cylinder (3).

4. The liquid hydrogen cylinder (100) according to claim 2, wherein the second sleeve component (113) comprises a second sleeve (1131) and a second gasket (1132), and the second sleeve (1131) is connected with one side of the second gasket (1132) facing the inner cylinder (3); wherein

Urceolus (4) are equipped with first mounting hole (41), second backing plate (1132) laminating is fixed in the periphery wall of urceolus (4), second sleeve pipe (1131) pass first mounting hole (41) extend to in urceolus (4) with first insulation heat pipe spare (111) link to each other.

5. The liquid hydrogen cylinder (100) according to claim 2, wherein the first heat insulation pipe member (111) comprises a first heat insulation pipe (1111) and a first heat insulation member (1112) and a second heat insulation member (1113) which are installed in the first heat insulation pipe (1111), and both ends of the first heat insulation pipe (1111) are respectively in sleeve fit with the first sleeve component (112) and the second sleeve component (113);

the first heat insulating member (1112) and the second heat insulating member (1113) are distributed in sequence from inside to outside along the radial direction of the inner cylinder (3), and the thickness of the first heat insulating member (1112) is smaller than that of the second heat insulating member (1113).

6. The liquid hydrogen cylinder (100) according to claim 1, characterized in that the second support structure (12) comprises:

a second insulating pipe (121);

the third sleeve component (122) is sleeved at the inner end of the second heat insulation pipe fitting (121), and the third sleeve component (122) is fixedly connected with the inner cylinder (3);

the fourth sleeve component (123), the outer end of second adiabatic pipe fitting (121) is located in the cover of fourth sleeve component (123), fourth sleeve component (123) with urceolus (4) fixed connection.

7. The liquid hydrogen cylinder (100) according to claim 6, characterized in that the third sleeve assembly (122) comprises a third sleeve (1221), a third gasket (1222), the third sleeve (1221) being provided on a side of the third gasket (1222) facing away from the inner cylinder (3); wherein

The third sleeve (1221) is sleeved at the inner end of the second heat insulation pipe fitting (121), and the third backing plate (1222) is fixedly connected with the peripheral wall of the inner barrel (3).

8. The liquid hydrogen cylinder (100) according to claim 6, characterized in that the fourth sleeve assembly (123) comprises a fourth sleeve (1231) and a fourth shim plate (1232), the fourth sleeve (1231) being connected to the fourth shim plate (1232) on the side facing the inner cylinder (3); wherein

Urceolus (4) are equipped with second mounting hole (42), fourth backing plate (1232) laminating is fixed in the periphery wall of urceolus (4), fourth sleeve pipe (1231) passes second mounting hole (42) in order to extend urceolus (4) in with second adiabatic pipe fitting (121) link to each other.

9. The liquid hydrogen cylinder (100) according to claim 6, wherein the second heat insulating pipe member (121) includes a second heat insulating pipe (1211) and a third heat insulating member (1212) and a fourth heat insulating member (1213) installed in the second heat insulating pipe (1211), and both ends of the second heat insulating pipe (1211) are fitted over the third and fourth sleeve members (122, 123), respectively;

the third heat-insulating member (1212) and the fourth heat-insulating member (1213) are distributed in this order from the inside to the outside in the radial direction of the inner tube (3), and the thickness of the third heat-insulating member (1212) is smaller than the thickness of the fourth heat-insulating member (1213).

10. A hydrogen fuel cell system, characterized in that a liquid hydrogen cylinder (100) according to any one of claims 1-9 is provided.