CN217273544U

CN217273544U - Supporting structure and liquid hydrogen bottle with same

Info

Publication number: CN217273544U
Application number: CN202220794641.9U
Authority: CN
Inventors: 卜玉; 刘瑞敏; 杨林; 高婉丽; 刘玉涛; 杨思锋; 陈珊; 刘康娜; 尚凯伦
Original assignee: Beijing Institute of Aerospace Testing Technology
Current assignee: Beijing Institute of Aerospace Testing Technology
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-23
Anticipated expiration: 2032-04-06

Abstract

The utility model relates to a technical field is stored to liquid hydrogen, concretely relates to bearing structure and have its liquid hydrogen cylinder. A support structure for supporting an inner container and an outer container which are sleeved with each other, comprising: the two ends of the first pipe body are respectively connected with the inner container and the outer container; and the second pipe body is sleeved outside the first pipe body, a gap is reserved between the second pipe body and the first pipe body, the second end of the second pipe body is connected with the outer liner, and the first end of the second pipe body is in non-contact with the inner liner. The utility model provides a bearing structure and have its liquid hydrogen bottle that mechanical strength is high, the heat leakage is few.

Description

Supporting structure and liquid hydrogen bottle with same

Technical Field

The utility model relates to a technical field is stored to liquid hydrogen, concretely relates to bearing structure and have its liquid hydrogen bottle.

Background

The capacity density of hydrogen is three times that of kerosene, and the volume energy density is five times that of kerosene, so that the research on application of hydrogen becomes one of the current hot spots, wherein a liquid hydrogen cylinder for a carrier is the most central key equipment. The liquid hydrogen cylinder for a vehicle has strict requirements on heat insulation performance and holding time, for example, the liquid hydrogen cylinder for a vehicle requires to be parked for at least three days without discharging hydrogen, which requires that heat leakage of the liquid hydrogen cylinder is controlled below 10W, which requires reducing a structure in contact with the liquid hydrogen cylinder, for example, a contact area of a support structure, which undoubtedly reduces mechanical strength of the liquid hydrogen cylinder itself.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the mechanical strength and the heat leakage amount of the liquid hydrogen bottle self among the prior art can not compromise to provide a bearing structure that mechanical strength is high, the heat leakage amount is few and have its liquid hydrogen bottle.

In order to solve the technical problem, the utility model provides a supporting structure for have the support between the inner bag of establishing each other cover and the outer courage, include:

the two ends of the first pipe body are respectively connected with the inner container and the outer container;

and the second pipe body is sleeved outside the first pipe body, a gap is reserved between the second pipe body and the first pipe body, the second end of the second pipe body is connected with the outer liner, and the first end of the second pipe body is in non-contact arrangement with the inner liner.

Optionally, the second pipe body includes two concentrically arranged pipe bodies, and a gap is reserved between the two second pipe bodies.

Optionally, the ends of the first and second tubes are connected by a sealing plate.

Optionally, the first end of the first pipe body is connected with the end socket of the inner container, and the second ends of the first pipe body and the second pipe body extend to the outside of the outer container.

Optionally, the inner container further comprises a rod body arranged in the first pipe body, one end of the rod body is connected with the end socket of the inner container, and the other end of the rod body is connected with the end plate of the first pipe body.

Still provide a liquid hydrogen gas cylinder, include bearing structure as mentioned.

Optionally, be equipped with first inlet and first liquid outlet on the inner bag, be equipped with second inlet and second liquid outlet on the outer courage, first inlet and second inlet pass through feed liquor pipe intercommunication, first liquid outlet and second liquid outlet pass through the drain pipe intercommunication, the cover is equipped with at least one deck third body on feed liquor pipe and the drain pipe, the third body with reserve between feed liquor pipe and the drain pipe and have the clearance, just the third body with outer courage is connected, and with inner bag non-contact sets up.

Optionally, the third tube includes three tubes concentrically arranged, and a gap is reserved between two adjacent third tubes.

Optionally, the vacuum bottle further comprises a first valve and a second valve, the first valve is communicated with the liquid inlet pipe, the second valve is communicated with the liquid outlet pipe, the joint of the first valve and the liquid inlet pipe and the joint of the second valve and the liquid outlet pipe are both located in a vacuum cavity formed between the inner container and the outer container, and the operation ends of the first valve and the second valve are both located outside the outer container.

Optionally, the inner container is made of carbon fiber, and the outer container is made of aluminum alloy.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a supporting structure, inner bag and outer courage are connected through first body, in order to guarantee the mechanical strength of self, and weight is lighter, one side cover that is close to outer courage at first body simultaneously is equipped with at least one deck second body, and second body and inner bag non-contact setting, on the basis of further improving supporting structure's self mechanical strength like this, the area of contact with the inner bag has been reduced, the circulation route of gas between inner bag and outer courage has been prolonged simultaneously, the heat bridge has been prolonged promptly, thereby heat leakage quantity has been reduced.

2. The utility model provides a bearing structure, the setting of the body of rod in the first body of pipe not only further improves bearing structure's mechanical strength, can also prevent to take place relative rotation between inner bag and the outer courage, guarantees the stability of structure.

3. The liquid hydrogen bottle provided by the utility model, the arrangement of the third tube body on the liquid inlet tube and the liquid outlet tube further prolongs the circulation path of gas between the inner container and the outer container, namely prolongs the heat bridge, thereby reducing the heat leakage quantity; meanwhile, leaked gas can exchange heat with gas in the liquid inlet pipe and the liquid outlet pipe to perform temperature compensation, so that the maximization of energy utilization is realized.

4. The utility model provides a liquid hydrogen bottle, the junction of first valve and feed liquor pipe and the junction of second valve and drain pipe all are arranged in the vacuum cavity that forms between inner bag and the outer courage, have saved installation space, have improved cold insulation performance, have avoided the use of vacuum stop valve simultaneously, have alleviateed the weight of whole device.

5. The utility model provides a liquid hydrogen bottle, inner bag are carbon fiber material, and outer courage is aluminum alloy material, for inner bag and outer courage structure of traditional austenitic stainless steel, whole weight reduces 30% to 40%.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the liquid hydrogen bottle provided by the present invention.

Description of reference numerals:

1. an inner container; 2. an outer liner; 3. a first pipe body; 4. a second tube body; 5. an end plate; 6. a rod body; 7. closing the plate; 8. a vacuum chamber; 9. a heat insulating layer; 10. a liquid inlet pipe; 11. a liquid outlet pipe; 12. a third tube; 13. a first valve; 14. a second valve; 15. and (4) pressing the flange.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

One embodiment of the supporting structure shown in fig. 1 is used for supporting an inner container 1 and an outer container 2 which are sleeved with each other, and comprises a first pipe body 3 and two layers of second pipe bodies 4.

The first end of first body with the head of inner bag is connected, and the welding of second end has end plate 5, and extends to outer courage outside. And a rod body 6 is arranged on the axis of the first pipe body, one end of the rod body is connected with the seal head of the inner container, and the other end of the rod body is connected with the end plate of the first pipe body.

Two layers of second pipe bodies are sequentially sleeved outside the first pipe body from inside to outside, gaps are reserved between the second pipe bodies and the first pipe body and between the two second pipe bodies, and the end parts of the first pipe bodies and the second pipe bodies are connected through sealing plates 7; and the second end of the second pipe body is connected with the outer container and extends to the outside of the outer container, and the first end of the second pipe body is arranged in a non-contact manner with the inner container.

Still provide a liquid hydrogen cylinder, including the inner bag and the outer courage of establishing each other cover and be used for connecting inner bag, outer courage bearing structure, liquid hydrogen cylinder is horizontal structure, the inner bag is carbon fiber material, outer courage is the aluminum alloy material, is formed with vacuum cavity 8 between inner bag and the outer courage, bearing structure includes along a pair of axial setting, and sets up on the axis of inner bag and outer courage. The outer cover of inner bag has heat insulation layer 9, fixes insulating layer and inner bag through the steel wire.

For making things convenient for filling and output of liquid hydrogen, be close to the bottom on the inner bag and be equipped with first inlet and first liquid outlet, relevant position is equipped with second inlet and second liquid outlet on the outer courage, first inlet and second inlet pass through feed liquor pipe 10 intercommunication, first liquid outlet and second liquid outlet pass through drain pipe 11 intercommunication, the cover is equipped with three-layer third body 12 by interior outside to in proper order on feed liquor pipe and the drain pipe, the third body with reserve gapped, adjacent two between feed liquor pipe and the drain pipe reserve and have the clearance between the third body, just the third body with outer courage is connected, and with inner bag non-contact sets up.

In order to conveniently control the filling and the output of liquid hydrogen, the part of the liquid inlet pipe positioned in the vacuum cavity is also communicated with a first valve 13, the part of the liquid outlet pipe positioned in the vacuum cavity is also communicated with a second valve 14, and the operation ends of the first valve and the second valve are both positioned outside the outer container. The first valve and the second valve are both arranged in the vacuum cavity in an inclined mode and are connected with the outer container through the gland flange 15.

When liquid hydrogen needs to be filled into the inner container, a first valve communicated with the liquid inlet pipe is opened, the liquid hydrogen is filled into the inner container through the liquid inlet pipe, and the first valve is closed after the liquid hydrogen is filled to a preset position; when hydrogen supply is needed, the second valve communicated with the liquid outlet pipe is opened, and after liquid hydrogen in the inner container flows out to a preset position through the liquid outlet pipe, the second valve is closed.

The thermal bridge is prolonged by 2.5 times by the arrangement of the two layers of second pipe bodies, the length of the thermal bridge is increased by about 3 times by the arrangement of the three layers of third pipe bodies, and the problem of high heat leakage at the supporting position of the liquid hydrogen cylinder is solved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A supporting structure for a support between an inner container (1) and an outer container (2) with mutual nesting, characterized in that it comprises:

the two ends of the first pipe body (3) are respectively connected with the inner container (1) and the outer container (2);

at least one deck second body (4), the cover is established outside first body (3), second body (4) with reserve between first body (3) and have the clearance, just the second end of second body (4) with outer courage (2) are connected, first end with inner bag (1) non-contact sets up.

2. The support structure according to claim 1, characterized in that said second tubular body (4) comprises two concentrically arranged, with a gap being reserved between said two second tubular bodies (4).

3. The support structure according to claim 2, characterized in that the ends of the first (3) and second (4) tubes are connected by a closing plate (7).

4. The supporting structure of any one of claims 1 to 3, wherein a first end of the first tube (3) is connected to a closure of the inner container (1), and a second end of each of the first tube (3) and the second tube (4) extends outside the outer container (2).

5. The supporting structure of claim 4, further comprising a rod body (6) arranged in the first pipe body (3), wherein one end of the rod body (6) is connected with the end socket of the inner container (1), and the other end of the rod body is connected with the end plate (5) of the first pipe body (3).

6. A liquid hydrogen gas cylinder, characterized in that it comprises a support structure according to any one of claims 1 to 5.

7. The liquid hydrogen bottle of claim 6, characterized in that, be equipped with first inlet and first liquid outlet on inner bag (1), be equipped with second inlet and second liquid outlet on outer courage (2), first inlet and second inlet pass through feed liquor pipe (10) intercommunication, first liquid outlet and second liquid outlet pass through drain pipe (11) intercommunication, the cover is equipped with at least one deck third body (12) on feed liquor pipe (10) and drain pipe (11), third body (12) with reserve between feed liquor pipe (10) and drain pipe (11) and leave the clearance, just third body (12) with outer courage (2) are connected, and with inner bag (1) non-contact sets up.

8. The liquid hydrogen cylinder according to claim 7, characterized in that the third tubes (12) comprise three concentrically arranged tubes, and a gap is reserved between two adjacent third tubes (12).

9. The liquid hydrogen gas cylinder according to claim 7, characterized by further comprising a first valve (13) and a second valve (14) which are respectively communicated with the liquid inlet pipe (10) and the liquid outlet pipe (11), wherein the joint of the first valve (13) and the liquid inlet pipe (10) and the joint of the second valve (14) and the liquid outlet pipe (11) are both positioned in a vacuum cavity (8) formed between the inner container (1) and the outer container (2), and the operating ends of the first valve (13) and the second valve (14) are both positioned outside the outer container (2).

10. The liquid hydrogen bottle according to any one of claims 6 to 9, wherein the inner container (1) is made of carbon fiber, and the outer container (2) is made of aluminum alloy.