Low-temperature liquid storage tank

Abstract

The utility model discloses a low-temperature liquid storage tank, which comprises an inner container and a heat insulating layer fixed outside the inner container, a protective layer is arranged outside the heat insulating layer, a top seal head and a bottom seal head are respectively arranged at the top and the bottom of the inner container, two groups of upper support legs and a liquid inlet / outlet are respectively fixedly arranged at the bottom of the bottom seal head, and two groups of lower support legs are respectively fixedly arranged at the bottom of the bottom seal head. Glass fiber reinforced plastics are fixedly arranged at the bottoms of the upper supporting legs; according to the storage tank, through the designed protection mechanism, the exposed flexible closed-cell elastic foam layer can be protected in the using or carrying process of the storage tank; the probability that external objects touch the flexible closed-cell elastic foam layer or the flexible closed-cell elastic foam layer pokes hard objects to cause crack damage in the storage tank carrying process is reduced, the arc-shaped baffles can be disassembled and assembled and can be disassembled and assembled for use according to conditions, the heat insulation effect on the supporting leg part is improved, and the service life of the supporting leg part is prolonged. And the service life of the flexible closed-cell elastic foam layer is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of storage tanks, and in particular relates to a low-temperature liquid storage tank. Background Art

[0002] Cryogenic liquid storage tanks are the main storage equipment for gasification stations, gas filling stations, peak-shaving stations, etc. They are widely used in the natural gas and industrial gas industries. The containers in the storage tanks are filled with cryogenic liquids.

[0003] Chinese patent application No. 201821354024.7 discloses a low-temperature liquid storage tank. The patent adds an insulating layer, a protective layer and a flexible closed-cell elastic foam layer on the outside of the inner container and the head, which has the effects of insulation, low manufacturing difficulty, good insulation effect and low maintenance cost. The flexible closed-cell elastic foam layer is arranged on the outside of the leg to minimize the cold transfer of the leg part, and the above-mentioned flexible closed-cell elastic foam layer located on the outside of the leg is directly exposed to the outside. During use, an external object hits or the flexible closed-cell elastic foam layer pierces a hard object during the transportation of the storage tank, causing cracks and damage to the flexible closed-cell elastic foam layer. At this time, the cold of the leg part is dissipated outward and leaked, affecting the insulation effect of the flexible closed-cell elastic foam layer on the leg part, and also reducing the service life of the flexible closed-cell elastic foam layer. Moreover, when the storage tank is transported, foreign matter from the outside is also easy to enter the inner container from the liquid inlet and outlet in the bottom head of the inner container, resulting in the problem of contamination of the liquid after the inner container is filled with liquid later. For this reason, we propose a low-temperature liquid storage tank. Utility Model Content

[0004] The utility model aims to provide a low-temperature liquid storage tank to solve the problem in the above-mentioned background technology that the flexible closed-cell elastic foam layer is directly exposed to the outside, and the flexible closed-cell elastic foam layer is cracked and damaged by external objects during use or poked by objects during the transportation of the storage tank. At this time, the cold of the supporting leg part leaks outward, affecting the thermal insulation effect of the flexible closed-cell elastic foam layer on the supporting leg part.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature liquid storage tank, comprising an inner container and an insulating layer fixed to the outside of the inner container, a protective layer is arranged on the outside of the insulating layer, a top head and a bottom head are arranged on the top and bottom of the inner container respectively, two groups of upper legs and liquid inlet and outlet are fixedly arranged on the bottom of the bottom head respectively, a glass fiber reinforced plastic is fixedly arranged on the bottom of the glass fiber reinforced plastic, a lower leg is fixedly arranged on the bottom of the glass fiber reinforced plastic, a flexible closed-cell elastic foam layer is fixedly arranged on the outside of the upper leg, the glass fiber reinforced plastic and the lower leg, a protective mechanism for protecting the flexible closed-cell elastic foam layer is arranged on the bottom of the bottom head, the protective mechanism comprises two groups of protective members for protecting the flexible closed-cell elastic foam layer, the protective member comprises an arc-shaped baffle, an arc-shaped rubber buffer plate is fixedly arranged on the outer wall of the arc-shaped baffle, through grooves are opened on the opposite sides of the two groups of the arc-shaped baffles and the two groups of the arc-shaped rubber buffer plates, and a mounting member for fixing the arc-shaped baffle is arranged between the arc-shaped baffle and the protective layer.

[0006] Preferably, the mounting member comprises a fixing ring and two sets of side plates, the fixing ring is fixed to the outside of the protective layer, and the side plates are fixed to the outside of the top of the arc-shaped baffle.

[0007] Preferably, mounting plates are fixedly provided on both sides of the outer wall of the fixing ring, screw holes are opened inside the mounting plates, side plates are fixedly provided on both sides of the top outer wall of the arc-shaped baffle, and a fixing ring is fixedly provided on the top of the side plate.

[0008] Preferably, a spiral column is provided inside the fixing ring, and the working end of the spiral column extends to the inside of the screw hole, and the outside of the spiral column is connected with two groups of internal threaded rings through threads.

[0009] Preferably, a blocking piece is provided on the liquid inlet and outlet for blocking the inside of the liquid inlet and outlet, and the blocking piece includes a handle, a blocking column is fixedly provided on the top of the handle, and the top of the blocking column extends to the inside of the liquid inlet and outlet, and a rubber ring is fixedly provided on the outside of the blocking column.

[0010] Preferably, the top head, the bottom head and the inner container are fixedly connected by welding, and the insulation layer is a vacuum insulation panel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) The utility model is designed with a protective mechanism to protect the flexible closed-cell elastic foam layer exposed to the outside during use or transportation of the storage tank, thereby reducing the probability of external objects hitting the flexible closed-cell elastic foam layer or the flexible closed-cell elastic foam layer poking hard objects during transportation of the storage tank, resulting in cracks and damage. In addition, the arc-shaped baffle can be disassembled and assembled and can be disassembled and assembled for use according to the situation, thereby improving the heat insulation effect of the support leg part and increasing the service life of the flexible closed-cell elastic foam layer.

[0013] (2) The utility model has a blocking member designed to block the exposed liquid inlet and outlet during the transportation of the storage tank, thereby preventing foreign matter from entering the interior of the container through the liquid inlet and outlet, causing contamination of the liquid after the container is subsequently filled with liquid, thereby facilitating subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the storage tank structure of the utility model when viewed from above;

[0016] Figure 3 This is a schematic diagram of the protection mechanism structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the mounting plate structure of the utility model;

[0018] Figure 5 This is a schematic diagram of the bottom support leg structure of the utility model when viewed from above;

[0019] Figure 6 This is a schematic diagram of the structure of the inner container of the utility model when viewed from above;

[0020] Figure 7 It is a schematic diagram of the structure of the upper supporting leg and the lower supporting leg of the utility model;

[0021] In the figure: 100, protective layer; 101, flexible closed-cell elastic foam layer; 102, lower leg; 103, liquid inlet and outlet; 104, upper leg; 105, inner container; 200, arc-shaped baffle; 201, arc-shaped rubber buffer plate; 202, fixing ring; 203, fixing ring; 204, side plate; 205, mounting plate; 206, internal thread ring; 207, screw hole; 300, handle; 301, rubber ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 The utility model provides a technical solution: a low-temperature liquid storage tank, comprising an inner container 105, and an insulating layer fixed on the outside of the inner container 105, a protective layer 100 is arranged on the outside of the insulating layer, a top head and a bottom head are arranged on the top and bottom of the inner container 105 respectively, when in use, the top head and the bottom head can seal the top and bottom of the inner container 105 into a closed container, two groups of upper legs 104 and liquid inlet and outlet 103 are fixedly arranged on the bottom of the bottom head respectively, the bottom of the upper leg 104 is fixedly provided with glass fiber reinforced plastic, when in use, the glass fiber reinforced plastic can increase the thermal insulation performance between the upper leg 104 and the lower leg 102, the bottom of the glass fiber reinforced plastic is fixedly provided with the lower leg 102, and the outer parts of the upper leg 104, the glass fiber reinforced plastic and the lower leg 102 are fixedly provided with soft The bottom of the bottom head is provided with a protective mechanism for protecting the flexible closed-cell elastic foam layer 101, the protective mechanism includes two groups of protective parts for protecting the flexible closed-cell elastic foam layer 101, the protective parts include an arc-shaped baffle 200, the outer wall of the arc-shaped baffle 200 is fixedly provided with an arc-shaped rubber buffer plate 201, when in use, the design of the arc-shaped rubber buffer plate 201 can play a buffering effect when an external object hits or pokes an external hard object, the two groups of arc-shaped baffles 200 and the two groups of arc-shaped rubber buffer plates 201 are provided with through grooves on the opposite sides, through which the pipes can be conveniently placed under the storage tank and connected to the liquid inlet and outlet 103, and a mounting part for fixing the arc-shaped baffle 200 is provided between the arc-shaped baffle 200 and the protective layer 100.

[0025] Example 2

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 The mounting member includes a fixing ring 203 and two sets of side plates 204, the fixing ring 203 is fixed to the outside of the protective layer 100, and the side plates 204 are fixed to the top outer side of the arc baffle 200;

[0027] Mounting plates 205 are fixedly arranged on both sides of the outer wall of the fixing ring 203, and screw holes 207 are opened inside the mounting plates 205. When in use, the spiral column and the screw hole 207 are connected by threads. Side plates 204 are fixedly arranged on both sides of the outer wall of the top of the arc-shaped baffle 200, and a fixing ring 202 is fixedly arranged on the top of the side plate 204. The fixing ring 202 is an annular structure when viewed from the side.

[0028] A spiral column is arranged inside the fixing ring 202, and the working end of the spiral column extends to the inside of the screw hole 207, and the outside of the spiral column is connected with two groups of internal threaded rings 206 through threads. When in use, the fixing ring 202 can be fixed by tightening the two groups of internal threaded rings 206.

[0029] The utility model is designed with a protective mechanism to protect the exposed flexible closed-cell elastic foam layer 101 during use or transportation of the storage tank, thereby reducing the probability of external objects hitting the flexible closed-cell elastic foam layer 101 or the flexible closed-cell elastic foam layer 101 poking hard objects and causing damage thereto during transportation of the storage tank. In addition, the arc-shaped baffle 200 is detachable and can be disassembled and used according to the situation, thereby improving the heat insulation effect of the support leg part and increasing the service life of the flexible closed-cell elastic foam layer 101.

[0030] Example 3

[0031] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 A blocking piece is provided on the liquid inlet and outlet 103 for blocking the inside of the liquid inlet and outlet 103, and the blocking piece includes a handle 300. A blocking column is fixedly provided on the top of the handle 300, and the top of the blocking column extends to the inside of the liquid inlet and outlet 103. A rubber ring 301 is fixedly provided on the outside of the blocking column, and the rubber ring 301 can fix the blocking column on the top of the handle 300 and the liquid inlet and outlet 103.

[0032] The utility model is designed with a blocking piece that can block the exposed liquid inlet and outlet 103 during the transportation of the storage tank, preventing foreign matter from entering the inner container 105 through the liquid inlet and outlet 103, causing contamination of the liquid after the inner container 105 is subsequently filled with liquid, thereby facilitating subsequent use.

[0033] In this embodiment, preferably, the top head, the bottom head and the inner container 105 are fixedly connected by welding, and the insulation layer is a vacuum insulation board to achieve insulation effect.

[0034] The working principle and use process of this utility model:

[0035] When the utility model is used, when the storage tank is used or transported, the arc baffle 200 and the arc rubber buffer plate 201 can reduce the probability of damage caused by other objects hitting or the flexible closed-cell elastic foam layer 101 poking hard objects. When the arc baffle 200 is installed on the storage tank, the working end of the spiral column is screwed into the inside of the screw hole 207, and then the arc baffle 200 is placed at a suitable position below the protective layer 100, and the fixing ring 202 on the top of the arc baffle 200 is aligned with the spiral column. When the inner thread ring 206 of the spiral column near the mounting plate 205 is screwed to the position near the working end of the spiral column, the arc baffle 200 is moved toward the storage tank, and then the end of the spiral column passes through the interior of the fixing ring 202, and then another set of inner thread rings 206 is screwed to the end position of the spiral column, and finally the two sets of inner thread rings 206 on the spiral column are screwed in opposite directions to fix the fixing ring 202, so that the arc baffle 200 can be fixed. When it needs to be removed, the reverse principle can be followed;

[0036] Before moving the storage tank, hold the handle 300 and insert the top of the blocking column into the liquid inlet and outlet 103. At this time, the rubber ring 301 located on the outside of the blocking column will be inserted into the liquid inlet and outlet 103. At this time, the rubber ring 301 is squeezed by the liquid inlet and outlet 103 and the blocking column to increase the friction between the rubber ring 301 and the inner wall of the liquid inlet and outlet 103, thereby fixing the blocking column. At this time, external foreign matter can be prevented from entering the interior of the inner container 105 from the liquid inlet and outlet 103. When using the storage tank, just operate according to the opposite principle mentioned above.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cryogenic liquid storage tank, comprising an inner container (105), and an insulating layer fixed to the outside of the inner container (105), wherein a protective layer (100) is arranged outside the insulating layer, a top head and a bottom head are respectively arranged at the top and bottom of the inner container (105), two groups of upper legs (104) and liquid inlet and outlet ports (103) are respectively fixedly arranged at the bottom of the bottom head, a glass fiber reinforced plastic is fixedly arranged at the bottom of the upper legs (104), a lower leg (102) is fixedly arranged at the bottom of the glass fiber reinforced plastic, and a flexible closed-cell elastic foam layer (101) is fixedly arranged outside the upper legs (104), the glass fiber reinforced plastic and the lower legs (102), wherein: A protection mechanism for protecting the flexible closed-cell elastic foam layer (101) is arranged at the bottom of the bottom seal, the protection mechanism comprising two groups of protection members for protecting the flexible closed-cell elastic foam layer (101), the protection members comprising an arc-shaped baffle plate (200), an arc-shaped rubber buffer plate (201) being fixedly arranged on the outer wall of the arc-shaped baffle plate (200), through grooves being provided on opposite sides of the two groups of the arc-shaped baffle plates (200) and the two groups of the arc-shaped rubber buffer plates (201), and a mounting member for fixing the arc-shaped baffle plate (200) being provided between the arc-shaped baffle plate (200) and the protective layer (100).

2. A cryogenic liquid storage tank according to claim 1, characterized in that: The mounting member comprises a fixing ring (203) and two sets of side plates (204), wherein the fixing ring (203) is fixed to the outside of the protective layer (100), and the side plates (204) are fixed to the outside of the top of the arc-shaped baffle (200).

3. A cryogenic liquid storage tank according to claim 2, characterized in that: Mounting plates (205) are fixedly arranged on both sides of the outer wall of the fixing ring (203), screw holes (207) are opened inside the mounting plates (205), side plates (204) are fixedly arranged on both sides of the top outer wall of the arc-shaped baffle (200), and a fixing ring (202) is fixedly arranged on the top of the side plate (204).

4. A cryogenic liquid storage tank according to claim 3, characterized in that: A spiral column is arranged inside the fixing ring (202), and the working end of the spiral column extends to the inside of the screw hole (207). The outside of the spiral column is connected to two groups of internal threaded rings (206) through threads.

5. A cryogenic liquid storage tank according to claim 1, characterized in that: The liquid inlet and outlet (103) is provided with a blocking piece for blocking the inside of the liquid inlet and outlet (103), and the blocking piece includes a handle (300), a blocking column is fixedly provided on the top of the handle (300), and the top of the blocking column extends to the inside of the liquid inlet and outlet (103), and a rubber ring (301) is fixedly provided on the outside of the blocking column.

6. A cryogenic liquid storage tank according to claim 1, characterized in that: The top head, the bottom head and the inner container (105) are all fixedly connected by welding, and the insulation layer is a vacuum insulation panel.

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