LNG (Liquefied Natural Gas) vacuum heat insulation transportation storage tank

Abstract

The utility model relates to the technical field of LNG vacuum heat insulation transportation storage tanks, in particular to an LNG vacuum heat insulation transportation storage tank which comprises a transportation storage tank outer tank, a heat insulation material layer is fixedly installed on the inner wall of the transportation storage tank outer tank, an inner tank is fixedly installed on the inner wall of the heat insulation material layer, and a vacuum layer is arranged between the heat insulation material layer and the inner tank. The inner wall of the bottom of the heat insulation material layer communicates with a third connecting pipe, and the bottom of the third connecting pipe communicates with a vacuumizing exhaust pipe. According to the equipment, a high-vacuum multi-layer winding type heat insulation layer is adopted as a heat insulation material layer, a metal reflecting layer is matched with a spacing layer, and a vacuum layer between an outer tank and an inner tank of the transportation storage tank is combined, so that the heat insulation performance is greatly improved, the gasification loss of LNG in the transportation process can be effectively reduced, the energy loss is reduced, and the transportation economy is improved; the high vacuum state of the vacuum layer is maintained through cooperation of the third connecting pipe and the vacuumizing exhaust pipe, the heat insulation effect is continuously guaranteed, and stable storage and transportation of LNG are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to LNG vacuum heat insulation transport storage tank technical field especially relates to a LNG vacuum heat insulation transport storage tank. BACKGROUND

[0002] Under the background of continuous adjustment of energy structure and increasing demand for clean energy, liquefied natural gas (LNG) is increasingly important in the energy field due to its advantages such as high efficiency, cleanliness and environmental protection. The transportation of LNG is a key link in its industrial chain, and the LNG vacuum heat insulation transport storage tank is the core equipment for safe and efficient transportation. The traditional LNG transport storage tank has certain limitations in terms of heat insulation performance, pressure control and structural stability.

[0003] Some storage tanks have poor heat insulation effect, resulting in large gasification loss of LNG during transportation, which not only causes energy waste but also increases transportation cost and safety risk. When subjected to external forces such as vibration and jolt during transportation, the LNG inside the tank body may have safety problems. Therefore, it is of great practical significance to develop a LNG vacuum heat insulation transport storage tank with better performance and higher safety, and based on this, a LNG vacuum heat insulation transport storage tank is proposed to solve the above problems. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model provides a LNG vacuum heat insulation transport storage tank, which solves the problem of poor heat insulation effect of some storage tanks, resulting in large gasification loss of LNG during transportation, which not only causes energy waste but also increases transportation cost and safety risk.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a LNG vacuum heat insulation transport storage tank, comprising a transport storage tank outer tank, an insulating material layer is fixedly installed on the inner wall of the transport storage tank outer tank, an inner tank is fixedly installed on the inner wall of the insulating material layer, a vacuum layer is arranged between the insulating material layer and the inner tank, a connecting pipe three is communicated and arranged on the bottom inner wall of the insulating material layer, and a vacuum exhaust pipe is communicated and arranged on the bottom of the connecting pipe three.

[0006] Further improvement lies in that the inner wall of the inner tank is communicated and arranged with a connecting pipe one, the bottom of the connecting pipe one is communicated and arranged with an exhaust device one, the top of the connecting pipe one is communicated and arranged with a connecting pump pipe one, the outer wall of the connecting pump pipe one is communicated and arranged with a pressure sensor one, and the other end of the connecting pump pipe one is communicated and arranged with a connecting joint one.

[0007] Further improvement lies in that the connecting pipe two is communicated at the top of the middle section of the inner tank, the exhaust device two is communicated at the bottom of the connecting pipe two, the connecting pump pipe two is communicated at the top of the connecting pipe two, and the pressure sensor two is communicated on the outer wall of the connecting pump pipe two.

[0008] Further improvement lies in that the connecting pipe two is communicated at the top of the middle section of the inner tank, the exhaust device two is communicated at the bottom of the connecting pipe two, the connecting pump pipe two is communicated at the top of the connecting pipe two, and the pressure sensor two is communicated on the outer wall of the connecting pump pipe two.

[0009] Further improvement lies in that the connecting pipe two is communicated at the top of the middle section of the inner tank, the exhaust device two is communicated at the bottom of the connecting pipe two, the connecting pump pipe two is communicated at the top of the connecting pipe two, and the pressure sensor two is communicated on the outer wall of the connecting pump pipe two.

[0010] Further improvement lies in that the connecting pipe two is communicated at the top of the middle section of the inner tank, the exhaust device two is communicated at the bottom of the connecting pipe two, the connecting pump pipe two is communicated at the top of the connecting pipe two, and the pressure sensor two is communicated on the outer wall of the connecting pump pipe two.

[0011] Further improvement lies in that the connecting pipe two is communicated at the top of the middle section of the inner tank, the exhaust device two is communicated at the bottom of the connecting pipe two, the connecting pump pipe two is communicated at the top of the connecting pipe two, and the pressure sensor two is communicated on the outer wall of the connecting pump pipe two.

[0012] By the above technical scheme, the LNG vacuum heat-insulated transport storage tank has at least the following beneficial effects:

[0013] 1、the LNG vacuum heat-insulated transport storage tank adopts the high-vacuum multi-layer winding heat-insulating layer as the heat-insulating material layer, the metal reflecting layer and the spacing layer are matched, the vacuum layer between the outer tank and the inner tank is combined, the heat-insulating performance is greatly improved, the gasification loss of LNG in the transport process can be effectively reduced, energy loss is reduced, transport economy is improved, the high-vacuum state of the vacuum layer is maintained by the connecting pipe three and the vacuum exhaust pipe, the heat-insulating effect is continuously ensured, and stable storage and transport of LNG are ensured.

[0014] 2、The utility model discloses an inner tank sets up connecting pipe one, connecting pipe two respectively at the top of upper section and middle section, connects corresponding exhaust device one, exhaust device two, and installs pressure sensor one, pressure sensor two on connecting pump pipe one, connecting pump pipe two. The pressure monitoring of two parts can cooperate with exhaust system, can monitor the pressure of inner tank in real time, adjusts in time when the pressure is unusual, effectively avoids the safety accident caused by the pressure being too high, and all -round guarantee the safety of LNG in the transportation process. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application, but do not limit the present application.

[0016] In the drawings:

[0017] Figure 1 It is whole structure schematic diagram of the utility model;

[0018] Figure 2 It is sectional structure schematic diagram of the utility model;

[0019] Figure 3 It is inclined structure schematic diagram of the utility model;

[0020] Figure 4 It is local enlarged structure schematic diagram of the utility model.

[0021] In the drawings: 1, transport storage tank outer tank;2, connecting pipe one;3, connecting pump pipe one;4, connecting joint one;5, pressure sensor one;6, exhaust device one;7, connecting pipe two;8, connecting pump pipe two;9, connecting joint two;10, pressure sensor two;11, exhaust device two;12, connecting pipe three;13, vacuumizing exhaust pipe;14, pressure sensor three;15, cushion block;16, receiving ring;17, support leg;18, heat insulation material layer;19, inner tank. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0023] Some storage tanks have poor heat insulation effect, resulting in large gasification loss of LNG during transportation, which not only causes energy waste, but also increases transportation cost and safety risk. When subjected to external forces such as vibration and jolt during transportation, the LNG inside the tank body may have safety problems. The embodiment provides an LNG vacuum heat insulation transportation storage tank, please refer to Figure 1 Figure 4 The embodiment provides an LNG vacuum heat insulation transportation storage tank, which comprises a transportation storage tank outer tank 1, an inner wall of the transportation storage tank outer tank 1 is fixedly provided with a heat insulation material layer 18, an inner wall of the heat insulation material layer 18 is fixedly provided with an inner tank 19, a vacuum layer is arranged between the heat insulation material layer 18 and the inner tank 19, a connecting pipe three 12 is arranged in communication with the bottom inner wall of the heat insulation material layer 18, and a vacuum exhaust pipe 13 is arranged in communication with the bottom of the connecting pipe three 12; a connecting pipe one 2 is arranged in communication with the inner wall of the inner tank 19, an exhaust device one 6 is arranged in communication with the bottom of the connecting pipe one 2, a connecting pump pipe one 3 is arranged in communication with the top of the connecting pipe one 2, a pressure sensor one 5 is arranged in communication with the outer wall of the connecting pump pipe one 3, and a connecting joint one 4 is arranged in communication with the other end of the connecting pump pipe one 3; a connecting pipe two 7 is arranged in communication with the top of the middle segment of the inner tank 19, an exhaust device two 11 is arranged in communication with the bottom of the connecting pipe two 7, a connecting pump pipe two 8 is arranged in communication with the top of the connecting pipe two 7, a pressure sensor two 10 is arranged in communication with the outer wall of the connecting pump pipe two 8, and a connecting joint two 9 is arranged in communication with the other end of the connecting pump pipe two 8; a cushion block 15 is fixedly connected to the outer wall of the transportation storage tank outer tank 1, a receiving ring 16 is fixedly connected to the outer wall of the cushion block 15, and a supporting leg 17 is fixedly installed on the outer wall of the receiving ring 16; the exhaust device one 6 is arranged in the upper cavity of the inner tank 19, and the exhaust device two 11 is arranged in the lower cavity of the inner tank 19; the heat insulation material layer 18 is a high-vacuum multi-layer winding heat insulation layer, which comprises a metal reflection layer and a spacing layer; the connecting pipe three 12 is arranged in communication with the inner wall of the transportation storage tank outer tank 1.

[0024] ​Working principle: The inner tank 19 is made of low-temperature resistant material and is directly used to contain LNG. The special material can adapt to the ultra-low temperature environment of LNG, effectively prevent low temperature from causing damage to the tank body and liquid leakage; the heat insulation material layer 18 is set as a high-vacuum multi-layer winding type heat insulation layer, which contains a metal reflecting layer and a spacing layer. The metal reflecting layer can reflect heat back, reducing the radiation transmission of heat; the spacing layer plays a role in isolating and supporting the metal reflecting layer, and also has certain heat insulation performance, preventing heat from being transmitted by conduction; the vacuum layer formed between the outer tank 1 and the inner tank 19 of the transport storage tank greatly reduces heat conduction and heat convection, and works together with the heat insulation material layer 18 to achieve high-efficiency heat insulation, reduce the gasification loss of LNG during transportation, and connect the connecting pipe three 12 between the inner wall of the outer tank 1 of the transport storage tank and the bottom inner wall of the heat insulation material layer 18. The vacuum layer is then pumped to a vacuum state through the vacuum exhaust pipe 13, ensuring the heat insulation effect; the connecting pipe one 2 connected to the inner wall of the inner tank 19, the exhaust device one 6 connected to the bottom, and the connecting pump pipe one 3 connected to the top; the exhaust device one 6 is arranged in the upper cavity of the inner tank 19. When the pressure in the inner tank 19 is too high, part of the gas can be discharged through the exhaust device one 6 to adjust the pressure; the pressure sensor one 5 on the outer wall of the connecting pump pipe one 3 monitors the pressure in the inner tank 19 in real time and feeds back the pressure data to the operator. The operator can connect with external equipment through the connecting joint one 4 according to the pressure data and perform corresponding operations, such as adjusting the environmental parameters during transportation or performing gas recovery treatment, etc.; the connecting pipe two 7 connected to the top of the middle section of the inner tank 19, the exhaust device two 11 connected to the bottom, and the connecting pump pipe two 8 connected to the top; the exhaust device two 11 is arranged in the lower cavity of the inner tank 19 and is also used to discharge gas when the pressure is too high. The pressure sensor two 10 on the outer wall of the connecting pump pipe two 8 monitors the pressure at this position of the inner tank 19 in real time. The connecting joint two 9 can be connected with external equipment to realize the utilization of pressure data and related operations. The pressure monitoring and exhaust devices at the upper and lower positions cooperate with each other to more comprehensively guarantee the pressure stability of the inner tank 19 under different working conditions; the pad 15 is fixedly connected to the outer wall of the transport storage tank outer tank 1. The pad 15 plays a role in buffering and dispersing pressure. The pad 15 is fixedly connected to the outer wall of the pad 15. The support leg 17 provides a mounting base for the support leg 17. The support leg 17 is connected to the transport storage tank outer tank 1 through the support ring 16 and the pad 15, supports the entire transport storage tank, ensures the stability of the storage tank during transportation, prevents the tank body from being damaged due to shaking, jolting, etc. During transportation, the support leg 17 bears the weight of the tank body and various external forces during transportation. The pad 15 and the support ring 16 work together to evenly disperse these forces, ensuring the safety of the storage tank.

[0025] It should be noted that, in this document, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise a list of elements are not limited to those elements, but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0026] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. An LNG vacuum-insulated transport tank, comprising an outer tank (1), characterized in that: The outer tank (1) of the transport storage tank is fixedly installed with an insulation material layer (18) on its inner wall. An inner tank (19) is fixedly installed on the inner wall of the insulation material layer (18). A vacuum layer is provided between the insulation material layer (18) and the inner tank (19). A connecting pipe three (12) is provided at the bottom inner wall of the insulation material layer (18). A vacuum exhaust pipe (13) is provided at the bottom of the connecting pipe three (12).

2. The LNG vacuum insulated transport storage tank according to claim 1, characterized in that: The inner wall of the inner tank (19) is connected to a connecting pipe (2), the bottom of the connecting pipe (2) is connected to an exhaust device (6), the top of the connecting pipe (2) is connected to a connecting pump pipe (3), the outer wall of the connecting pump pipe (3) is connected to a pressure sensor (5), and the other end of the connecting pump pipe (3) is connected to a connecting connector (4).

3. The LNG vacuum insulated transport storage tank according to claim 1, characterized in that: The inner tank (19) is connected to the top of the middle section with a connecting pipe 2 (7), the bottom of the connecting pipe 2 (7) is connected to an exhaust device 2 (11), the top of the connecting pipe 2 (7) is connected to a connecting pump pipe 2 (8), the outer wall of the connecting pump pipe 2 (8) is connected to a pressure sensor 2 (10), and the other end of the connecting pump pipe 2 (8) is connected to a connecting joint 2 (9).

4. An LNG vacuum insulated transport storage tank according to claim 1, characterized in that: A pad (15) is fixedly connected to the outer wall of the outer tank (1) of the transport storage tank. A receiving ring (16) is fixedly connected to the outer wall of the pad (15). A support leg (17) is fixedly installed on the outer wall of the receiving ring (16).

5. An LNG vacuum insulated transport storage tank according to claim 2, characterized in that: The first exhaust device (6) is located in the upper section of the inner cavity of the inner tank (19), and the second exhaust device (11) is located in the lower section of the inner cavity of the inner tank (19).

6. An LNG vacuum insulated transport storage tank according to claim 1, characterized in that: The insulation material layer (18) is configured as a high-vacuum multilayer wound insulation layer, which includes a metal reflective layer and a spacer layer.

7. An LNG vacuum insulated transport storage tank according to claim 1, characterized in that: The connecting pipe three (12) is connected to the inner wall of the outer tank (1) of the transport storage tank.

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