CN210462439U

CN210462439U - LNG (liquefied Natural gas) storage tank of gas station

Info

Publication number: CN210462439U
Application number: CN201920306305.3U
Authority: CN
Inventors: 辛宝岐
Original assignee: Tianjin Qiangang Gas Equipment Technology Co ltd
Current assignee: Tianjin Qiangang Gas Equipment Technology Co ltd
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2020-05-05
Anticipated expiration: 2029-03-08

Abstract

The utility model discloses a gas station LNG gas holder, include: the vacuum heat exchanger comprises an outer shell and an inner shell, wherein a vacuum cavity is formed between the outer shell and the inner shell, the outer surface of the inner shell is coated with an aerogel layer, the left side and the right side of the inner shell form a left heat exchange cavity and a right heat exchange cavity respectively through partition plates, and the left heat exchange cavity and the right heat exchange cavity are connected with a heat exchange mechanism. The casing sets up bilayer structure and can realize keeping warm thermal-insulated betterly, and furtherly, the cladding has one deck aerogel layer in the inner shell outside, can realize insulating against heat better, constantly or with the clearance ground with microthermal coolant injection left side heat transfer chamber and right heat transfer chamber to reduce the temperature of gas holder, make its lower level that maintains, thereby can reduce BOG's generation, can reduce the pressure of gas holder, also reduced BOG's emission, protected the environment.

Description

LNG (liquefied Natural gas) storage tank of gas station

Technical Field

The utility model relates to a LNG storage facilities technical field especially relates to a gas station LNG gas holder.

Background

Lng (liquefied Natural gas), an acronym for liquefied Natural gas. Natural gas is a combustible gas that is naturally produced in gas fields and is composed primarily of methane. LNG is condensed into liquid by cooling gaseous natural gas to-162 c at atmospheric pressure. The liquefied natural gas can greatly save storage and transportation space, and has the characteristics of large heat value, high performance and the like.

Need use the LNG gas holder to store LNG in the gas station, need low temperature to store LNG, along with external thermal entering, the temperature rise in the storage tank inevitably produces evaporation gas BOG, and the BOG that constantly increases can increase the internal pressure of storage tank, produces the phenomenon of rolling, and operating personnel need pass through the valve, puts into the air with BOG to reduce the pressure in the storage tank. However, the BOG is put into the air in the above manner, and air pollution is easily caused.

Disclosure of Invention

The utility model aims at providing a gas station LNG gas holder.

In order to realize the utility model discloses a purpose, the utility model provides a gas station LNG gas holder, include: outer shell and inner shell, be the vacuum cavity between outer shell and the inner shell, the outer surface cladding of inner shell has aerogel layer, the inner shell left and right sides forms left heat transfer chamber and right heat transfer chamber through the baffle respectively, left side heat transfer chamber and right heat transfer chamber are connected with heat transfer mechanism, heat transfer mechanism includes: the cooling medium box is communicated with the left heat exchange cavity and the right heat exchange cavity through the main inlet pipeline and the main exhaust pipeline, the main inlet pipeline and the main exhaust pipeline are respectively provided with a first pump and a third pump, the cooling medium of the cooling medium box is pumped into the heat exchange cavity through the first pump, and the water in the heat exchange cavity is guided into the cooling medium box through the third pump.

The main inlet pipeline is communicated with the left heat exchange cavity and the right heat exchange cavity through a first medium inlet pipeline provided with a valve and a second medium inlet pipeline provided with a valve respectively; the main discharge pipeline is communicated with the left heat exchange cavity and the right heat exchange cavity through a first medium discharge pipeline provided with a valve and a second medium discharge pipeline provided with a valve respectively.

Wherein, the baffle is a wave-shaped plate.

And the cooling medium tank is respectively communicated with an outlet and an inlet of the second refrigerator through a refrigeration pipeline and an inflow pipeline.

Wherein, be provided with temperature sensor in the inner shell.

Compared with the prior art, the beneficial effects of the utility model are that, the casing sets up bilayer structure and can realize keeping warm thermal-insulated betterly, furtherly, the cladding has one deck aerogel layer in the casing outside, can realize insulating against heat better, continuously or with microthermal coolant injection left heat transfer chamber and right heat transfer chamber with the clearance ground, with the temperature that reduces the gas holder, make its lower level that maintains, thereby can reduce BOG's generation, can reduce the pressure of gas holder, the emission of BOG has also been reduced, the environment has been protected.

Drawings

FIG. 1 is a schematic structural diagram of the present application;

in the figure, 1-left heat exchange cavity, 2-aerogel layer, 3-shell, 4-temperature sensor, 5-right heat exchange cavity, 6-recovery pipeline, 7-pressure gauge, 8-solenoid valve, 9-PLC controller, 10-return pipeline, 11-first refrigerator, 12-first medium inlet pipeline, 13-first pump, 14-main inlet pipeline, 15-water tank, 16-second refrigerator, 17-second pump, 18-refrigeration pipeline, 20-third pump, 21-lower elastic layer, 22-first medium outlet pipeline, 23-concrete base, 24-steel plate layer, 25-lead column, 26-upper elastic layer, 27-second medium outlet pipeline, 28-second medium inlet pipeline.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that "connected" and words used in this application to express "connected," such as "connected," "connected," and the like, include both direct connection of one element to another element and connection of one element to another element through another element.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when used in this specification the singular forms "a", "an" and/or "the" include "specify the presence of stated features, steps, operations, elements, or modules, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe the spatial relationship of one component or module or feature to another component or module or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the component or module in use or operation in addition to the orientation depicted in the figures. For example, if a component or module in the figures is turned over, components or modules described as "above" or "above" other components or modules or configurations would then be oriented "below" or "beneath" the other components or modules or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The components or modules may also be oriented in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

Example 1

As shown in figure 1 of the drawings, in which,

this embodiment provides a gas station LNG gas holder, includes: outer shell and inner shell, be the vacuum cavity between outer shell and the inner shell, the outer surface cladding of inner shell has aerogel layer, the inner shell left and right sides forms left heat transfer chamber and right heat transfer chamber through the baffle respectively, left side heat transfer chamber and right heat transfer chamber are connected with heat transfer mechanism, heat transfer mechanism includes: the cooling medium box is communicated with the left heat exchange cavity and the right heat exchange cavity through the main inlet pipeline and the main exhaust pipeline, the main inlet pipeline and the main exhaust pipeline are respectively provided with a first pump and a third pump, the cooling medium of the cooling medium box is pumped into the heat exchange cavity through the first pump, and the water in the heat exchange cavity is guided into the cooling medium box through the third pump.

The casing of above-mentioned gas holder sets up bilayer structure and can realize keeping warm thermal-insulated betterly, furtherly, the cladding has one deck aerogel layer in the inner casing outside, can realize insulating against heat better, constantly or with microthermal coolant injection left heat transfer chamber and right heat transfer chamber in the clearance to reduce the temperature of gas holder, make its lower level that maintains, thereby can reduce BOG's generation, can reduce the pressure of gas holder, also reduced BOG's emission, protected the environment.

Can realize the heat transfer in two heat transfer chambeies through a coolant medium case, reduce hardware mechanism and set up, effectual, two heat transfer chambeies can the heat transfer simultaneously, can realize independent heat transfer through valve control.

Wherein, the baffle is a wave-shaped plate.

Through the corrugated baffle, can improve heat transfer effect.

The second refrigerator can maintain the low temperature of the cooling medium in the cooling medium tank. It should be noted that the first refrigerator and the second refrigerator in the present application are both devices in the prior art.

Wherein, be provided with temperature sensor in the inner shell.

Under the condition that need not incessant heat transfer, through temperature sensor control, temperature sensor is connected with the PLC controller, and when the temperature rose to a certain temperature, the PLC controller control carried out the heat transfer.

Example 2

As shown in fig. 1, the LNG storage tank needs to have good shock resistance to improve the safety of the LNG storage tank. The application provides a shockproof base structure, this structure includes: the concrete base, the concrete base is provided with the recess, from the bottom up has set gradually lower floor's elastic layer, steel deck and upper elastic layer in the recess, upper elastic layer and lower floor's elastic layer are the rubber layer, LNG gas holder body sets up in upper elastic layer top, vertically run through in upper elastic layer and the lower floor's elastic layer and be provided with a plurality of lead blocks.

The earthquake-proof performance is better realized through the structure.

Example 3

As shown in fig. 1, the gas storage tank is communicated with an inlet and an outlet of the first refrigerator through a recovery pipeline and a return pipeline, respectively, the BOG enters the first refrigerator through the recovery pipeline, and flows back into the gas storage tank through the outlet after being liquefied, and the recovery pipeline is provided with a battery valve. In order to realize better control, a pressure gauge is arranged on the gas storage tank, the pressure gauge and the electromagnetic valve are connected through a PLC (programmable logic controller), and when the pressure reaches a certain value, the electromagnetic valve is opened to carry out BOG liquefaction.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A gas station LNG storage tank, characterized by includes: outer shell and inner shell, be the vacuum cavity between outer shell and the inner shell, the outer surface cladding of inner shell has aerogel layer, and the inner shell left and right sides forms left heat transfer chamber and right heat transfer chamber through the baffle respectively, left side heat transfer chamber and right heat transfer chamber are connected with heat transfer mechanism, heat transfer mechanism includes: the cooling medium box is communicated with the left heat exchange cavity and the right heat exchange cavity through the main inlet pipeline and the main exhaust pipeline, the main inlet pipeline and the main exhaust pipeline are respectively provided with a first pump and a third pump, the cooling medium of the cooling medium box is pumped into the heat exchange cavity through the first pump, and the water in the heat exchange cavity is guided into the cooling medium box through the third pump.

2. The LNG storage tank of the gas station as claimed in claim 1, wherein the main inlet pipeline is respectively communicated with the left heat exchange chamber and the right heat exchange chamber through a first medium inlet pipeline provided with a valve and a second medium inlet pipeline provided with a valve; the main discharge pipeline is communicated with the left heat exchange cavity and the right heat exchange cavity through a first medium discharge pipeline provided with a valve and a second medium discharge pipeline provided with a valve respectively.

3. The LNG storage tank of claim 1, wherein the partition is a corrugated plate.

4. The LNG storage tank of claim 1, wherein the cooling medium tank is respectively communicated with an outlet and an inlet of the second refrigerator through a refrigeration line and an inflow line.

5. The LNG storage tank of claim 1, wherein a temperature sensor is disposed in the inner shell.