Cooling device for LNG (Liquefied Natural Gas) storage tank

Abstract

The utility model relates to the technical field of natural gas storage, in particular to a cooling device for an LNG (Liquefied Natural Gas) storage tank. According to the technical scheme, the device comprises a tank body and a fixed box arranged on one side of the tank body, and a cooling assembly and a circulating assembly are arranged on the tank body; the cooling assembly comprises a heat conduction frame fixedly installed on the periphery of the tank body, a spiral groove is formed in the heat conduction frame, and a fixing cylinder is fixedly connected to the periphery of the heat conduction frame. Through mutual cooperation of the heat conduction frame, the fixing cylinder, the fixing box and the three-way pipe, a water source can fully cool the tank body, the water source can be conveyed into the fixing box through the three-way pipe to be recycled, when the water source is too hot, hot water can be discharged through the three-way pipe to be used, and therefore the water source can be recycled. The situation of water source waste is avoided, the strength of the tank body can be improved through the fixing barrel and the heat conduction frame, and good sunscreen and heat insulation operation can be conducted on the tank body through the aluminum silicate fiberboard in the fixing barrel.

Description

TECHNICAL FIELD

[0001] The utility model relates to natural gas storage technical field, concretely for a kind of cooling device for LNG liquefied natural gas storage tank. BACKGROUND

[0002] Liquefied natural gas is the low-temperature liquid formed after natural gas is cooled to-162 ℃ under normal pressure after purification treatment, and its main component is methane, also contains a small amount of ethane, propane and nitrogen and other components, when storing liquefied natural gas, it needs to use guide storage tank, and needs to use cooling device for LNG liquefied natural gas storage tank.

[0003] In prior art, there are problems as follows:

[0004] The conventional natural gas storage tank is mostly cooled by blowing air flow to the surface of tank body, and the cooling effect is poor, and the existing solution is to spray water source to the surface of storage pipe for cooling, the water source is quickly lost downward, the heat dissipation effect is general, and a large amount of water source is wasted, it is inconvenient to recycle the water source, it is inconvenient to make the water source fully cool the storage tank, and it is inconvenient to heat-insulate and sunscreen the storage tank. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of cooling device for LNG liquefied natural gas storage tank to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of cooling device for LNG liquefied natural gas storage tank, including tank body and the fixed box being arranged in the one side of tank body, the tank body is equipped with cooling assembly and circulation assembly;The cooling assembly includes heat conduction frame fixedly installed in the periphery of tank body, the inside of heat conduction frame is equipped with helical groove, the periphery of heat conduction frame is fixedly connected with fixed cylinder, the inboard of fixed cylinder is fixed with aluminium silicate fiber board;The circulation assembly includes fixed plate fixedly installed in the bottom of tank body, the fixed box is fixedly connected in the top of fixed plate, the one side of fixed box is fixedly connected with tee bend pipe with the bottom of heat conduction frame, the two ends of tee bend pipe are respectively communicated with fixed box and heat conduction frame, the top of fixed box is fixedly installed with delivery pump.

[0007] LNG liquefied natural gas can be stored by being introduced into the tank, water source can be stored by the fixed box, the water source in the fixed box is transported to the heat conducting frame by starting the conveying pump, the water source flows down along the spiral groove by spiral, the heat conducting frame is used to cool the tank, the water source can be fully cooled, the water source in the heat conducting frame is transported to the fixed box by the tee pipe to be recycled, when the water source is overheated after cooling the tank, the hot water can be discharged by the tee pipe, so that the waste of water source is avoided, the structure strength of the tank is improved by the fixed cylinder and the heat conducting frame, and the tank is better sun-proof and heat-insulated by the aluminum silicate fiber plate in the fixed cylinder.

[0008] Preferably, the top of the tank is fixedly provided with a liquid injection pipe, one side of the liquid injection pipe is fixedly connected with an exhaust pipe at the top of the tank, and the liquid injection pipe and the exhaust pipe are in communication with the tank.

[0009] Preferably, the bottom of the tank is fixedly provided with a base, and the bottom of the tank is fixedly connected with a liquid discharge pipe, and the liquid discharge pipe is located on the inner side of the base and is in communication with the tank.

[0010] Preferably, the bottom of the fixed plate is fixedly provided with a supporting leg, one side of the fixed plate is fixedly connected with the base, and the supporting leg is located on one side of the base.

[0011] Preferably, the input end of the conveying pump is fixedly provided with a water suction pipe, one end of the water suction pipe extends into the fixed box, the output end of the conveying pump is fixedly connected with a conveying pipe, and one end of the conveying pipe is fixedly connected with the top of the heat conducting frame.

[0012] Preferably, one end of the tee pipe is fixedly provided with a flange, and the outer side of the pipeline in communication with the fixed box and the outer side of the pipeline provided with the flange are fixedly connected with control valves.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Through the cooperation between the heat conduction frame, the fixing cylinder, the fixing box and the three-way pipe, the water source is stored in the fixing box, and then is delivered to the heat conduction frame, the water source is spirally downwardly flowed by the spiral groove in the heat conduction frame, and the water source is used for cooling the tank body by the heat conduction frame, so that the water source can be fully used for cooling the tank body, the water source can be delivered to the fixing box by the three-way pipe for recycling, when the water source is overheated, the hot water can be discharged by the three-way pipe, so that the waste of the water source is avoided, and the strength of the tank body is improved by the fixing cylinder and the heat conduction frame, and the tank body is better prevented from the sun and heat by the aluminum silicate fiber plate in the fixing cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is a tank body cut structure schematic diagram of the utility model;

[0017] Figure 3 It is a heat conduction frame local structure schematic diagram of the utility model. Figure 2

[0018] Figure 4 It is a heat conduction frame local structure schematic diagram of the utility model.

[0019] In the drawing: 1, tank body;2, liquid injection pipe;3, exhaust pipe;4, liquid discharge pipe;5, base;6, heat conduction frame;7, fixing cylinder;8, fixed plate;9, support leg;10, fixed box;11, three-way pipe;12, delivery pump;13, water suction pipe;14, delivery pipe;15, spiral groove;16, aluminum silicate fiber plate;17, control valve;18, flange. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model is further explained below in combination with the drawings and specific embodiments.

[0021] The utility model provides a kind of cooling device for LNG liquefied natural gas storage tank as shown in Figures 1-4 Cooling device for LNG liquefied natural gas storage tank, including tank body 1 and the fixed box 10 being set in the one side of tank body 1, be equipped with cooling assembly and circulation assembly on tank body 1;Cooling assembly includes the heat conduction frame 6 of fixed installation in the periphery of tank body 1, the inside of heat conduction frame 6 is equipped with spiral groove 15, the periphery of heat conduction frame 6 is fixedly connected with fixed cylinder 7, and the inboard of fixed cylinder 7 is fixed with aluminum silicate fiber plate 16;Circulation assembly includes fixed plate 8 of fixed installation in the bottom of tank body 1, and fixed box 10 is fixedly connected in the top of fixed plate 8, and the bottom of heat conduction frame 6 is fixedly connected with three-way pipe 11 on the one side of fixed box 10, and the two ends of three-way pipe 11 are communicated with fixed box 10 and heat conduction frame 6 respectively, and the top of fixed box 10 is fixedly installed with delivery pump 12; ​

[0022] The top of the tank body 1 is fixedly provided with a liquid injection pipe 2, and the top of the tank body 1 is fixedly connected with an exhaust pipe 3 on one side of the liquid injection pipe 2; the liquid injection pipe 2 and the exhaust pipe 3 are in communication with the tank body 1;

[0023] The bottom of the tank body 1 is fixedly provided with a base 5, and the bottom of the tank body 1 is fixedly connected with a liquid discharge pipe 4, which is located on the inner side of the base 5 and is in communication with the tank body 1;

[0024] The bottom of the fixed plate 8 is fixedly provided with a supporting leg 9, and one side of the fixed plate 8 is fixedly connected with the base 5; the supporting leg 9 is located on one side of the base 5;

[0025] The input end of the conveying pump 12 is fixedly provided with a water suction pipe 13, one end of the water suction pipe 13 extends into the fixed box 10, the output end of the conveying pump 12 is fixedly connected with a conveying pipe 14, and one end of the conveying pipe 14 is fixedly provided with the top of the heat conduction frame 6;

[0026] One end of the three-way pipe 11 is fixedly provided with a flange plate 18, and the outer side of the pipeline of the three-way pipe 11 in communication with the fixed box 10 and the outer side of the pipeline provided with the flange plate 18 are fixedly connected with a control valve 17.

[0027] The working principle of the cooling device for the LNG liquefied natural gas storage tank based on the embodiment is that: the LNG liquefied natural gas is introduced into the tank body 1 through the liquid injection pipe 2 for storage, the gas in the tank body 1 can be discharged through the exhaust pipe 3, and the LNG liquefied natural gas in the tank body 1 can be discharged through the liquid discharge pipe 4;

[0028] The water source is introduced into the fixed box 10 for storage, the conveying pump 12 is started, the water suction pipe 13 generates suction force to suck out the water source in the fixed box 10, then the water source is conveyed to the heat conduction frame 6 through the conveying pipe 14, the water source spirally flows downward along the spiral groove 15, and the heat conduction frame 6 is used to cool the tank body 1, so that the water source can fully cool the tank body 1;

[0029] When the water source in the heat conduction frame 6 is overheated after cooling the tank body 1, the control valve 17 at one end of the three-way pipe 11 connected with the fixed box 10 is opened, so that the three-way pipe 11 can convey the water source in the heat conduction frame 6 to the fixed box 10 for recycling, when the water source is overheated after cooling the tank body 1, another control valve 17 is opened, so that the three-way pipe 11 can discharge the hot water for use, so as to avoid the waste of water source, the fixed cylinder 7 and the heat conduction frame 6 can improve the structural strength of the tank body 1, and the aluminum silicate fiber plate 16 in the fixed cylinder 7 can better prevent the sun and heat insulation of the tank body 1.

[0030] The above specific embodiments are only several preferred embodiments of the utility model, based on the technical scheme of the utility model and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A cooling device for LNG liquefied natural gas storage tank, comprising a tank body (1) and a fixed box (10) arranged on one side of the tank body (1), characterized in that: The tank body (1) is provided with a cooling assembly and a circulating assembly; The cooling assembly comprises a heat-conducting frame (6) fixedly installed on the periphery of the tank body (1), the inside of the heat-conducting frame (6) is provided with a spiral groove (15), the periphery of the heat-conducting frame (6) is fixedly connected with a fixed cylinder (7), and the inner side of the fixed cylinder (7) is fixedly connected with an aluminum silicate fiber plate (16). The circulating assembly comprises a fixed plate (8) fixedly installed on the bottom of the tank body (1), a fixed box (10) fixedly connected to the top of the fixed plate (8), a three-way pipe (11) fixedly connected to the bottom of the heat-conducting frame (6) on one side of the fixed box (10), and a delivery pump (12) fixedly installed on the top of the fixed box (10).

2. The cooling device for LNG storage tank according to claim 1, characterized in that: The top of the tank body (1) is fixedly installed with a liquid injection pipe (2), the top of the tank body (1) on one side of the liquid injection pipe (2) is fixedly connected with an exhaust pipe (3), and the liquid injection pipe (2), the exhaust pipe (3) and the tank body (1) are in communication.

3. The cooling device for LNG storage tank according to claim 1, characterized in that: The bottom of the tank body (1) is fixedly installed with a base (5), the bottom of the tank body (1) is fixedly connected with a liquid discharge pipe (4), and the liquid discharge pipe (4) is located on the inner side of the base (5) and communicates with the tank body (1).

4. The cooling device for LNG storage tank according to claim 1, characterized in that: The bottom of the fixed plate (8) is fixedly installed with a supporting leg (9), one side of the fixed plate (8) is fixedly connected with the base (5), and the supporting leg (9) is located on one side of the base (5).

5. The cooling device for LNG storage tank according to claim 1, characterized in that: The input end of the delivery pump (12) is fixedly installed with a water suction pipe (13), one end of the water suction pipe (13) extends into the fixed box (10), the output end of the delivery pump (12) is fixedly connected with a delivery pipe (14), and one end of the delivery pipe (14) is fixedly installed on the top of the heat-conducting frame (6).

6. The cooling device for LNG storage tank according to claim 1, characterized in that: One end of the three-way pipe (11) is fixedly installed with a flange plate (18), the outer side of the pipeline in communication with the fixed box (10) and the outer side of the pipeline provided with the flange plate (18) are fixedly connected with a control valve (17).

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