CN213930386U

CN213930386U - LNG insulation can

Info

Publication number: CN213930386U
Application number: CN202023313359.4U
Authority: CN
Inventors: 陈小军; 唐杰
Original assignee: CHENGDU YUSIZONG TECHNOLOGY CO LTD
Current assignee: CHENGDU YUSIZONG TECHNOLOGY CO LTD
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-10
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to an LNG heat preservation box, which comprises an inner box and an outer box wrapped outside the inner box, wherein a heat preservation cavity is formed between the inner box and the outer box; a condenser and a balance tank are respectively fixed on the side wall of the outer box, a cooling channel is spirally formed in the box wall of the outer box, and a liquid inlet pipe and a liquid outlet pipe of the condenser are respectively connected with the head end and the tail end of the cooling channel to form a liquid cooling circulating system; the heat preservation cavity is communicated with the balance tank through a transparent conduction pipe with a smooth inner wall, and an upper travel switch and a lower travel switch for controlling the start and stop of the condenser are respectively arranged in the transparent conduction pipe; the slidable piston is arranged between the upper travel switch and the lower travel switch, so that the temperature self-adjustment of the heat insulation box can be realized, the temperature in the heat insulation box is controlled to fluctuate within a minimum range, and the storage and transportation safety of LNG is ensured.

Description

LNG insulation can

Technical Field

The utility model relates to an insulation can, concretely relates to LNG insulation can.

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. LNG generally adopts the liquefaction jar to store in the transportation, because LNG adopts the mode of cooling liquefaction, consequently in storage or transportation, must guarantee a low temperature environment, once appear high temperature and just can appear exploding the jar phenomenon.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a LNG insulation can, can realize the temperature self-interacting of insulation can, the temperature in the control insulation can is undulant at minimum within range to guarantee LNG's storage transportation safety.

The purpose of the utility model is realized through the following technical scheme:

an LNG insulation can, comprising:

the inner box and the outer box are wrapped outside the inner box, and a heat insulation cavity is formed between the inner box and the outer box;

a condenser and a balance tank are respectively fixed on the side wall of the outer box, a cooling channel is spirally formed in the box wall of the outer box, and a liquid inlet pipe and a liquid outlet pipe of the condenser are respectively connected with the head end and the tail end of the cooling channel to form a liquid cooling circulating system;

the heat preservation cavity is communicated with the balance tank through a transparent conduction pipe with a smooth inner wall, and an upper travel switch and a lower travel switch for controlling the start and stop of the condenser are respectively arranged in the transparent conduction pipe;

a slidable piston is arranged between the upper travel switch and the lower travel switch.

Furthermore, the balance tank is provided with a pressure regulating valve, so that the piston is close to the upper travel switch under the state that the air pressure of the heat preservation cavity and the air pressure of the balance tank are balanced;

the upper travel switch is close to the end where the heat preservation cavity is located, and the lower travel switch is close to the end where the balance tank is located.

Furthermore, the upper travel switch is a closing switch of the condenser, and the lower travel switch is a starting switch of the condenser.

Further, the inner box is provided with a sealing opening of a flange structure.

Furthermore, the inner box and the outer box are both made of corrosion-resistant stainless steel.

Furthermore, a layer of heat insulating material is padded between the condenser and the side wall of the outer box.

Further, the inner and outer cases are barrel-shaped.

The utility model has the advantages that: compare with traditional insulation can, an insulation chamber that is used for controlling inner box ambient temperature of this scheme design, the temperature regulation of insulation can is realized to temperature through adjusting the insulation chamber, utilize an equalizer tank that switches on with the insulation chamber simultaneously, realize temperature control through pressure variation between the two, when insulation chamber temperature risees, its pressure increase, promote the piston and remove towards the equalizer tank, make the condenser start up until triggering down stroke switch, cool down, after the temperature reduces, insulation chamber pressure reduces, the piston replies, make the condenser close until the upper stroke switch, so reciprocal, realize the temperature regulation in insulation chamber.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a condenser control schematic.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1, an LNG insulation can comprises an inner box 1 and an outer box 2 wrapped outside the inner box 1, wherein an insulation cavity 3 is formed between the inner box 1 and the outer box 2; a condenser 5 and a balance tank 8 are respectively fixed on the side wall of the outer box 2, a cooling channel 13 is spirally formed in the box wall of the outer box 2, and a liquid inlet pipe 6 and a liquid outlet pipe 7 of the condenser 5 are respectively connected with the head end and the tail end of the cooling channel 13 to form a liquid cooling circulation system; the heat preservation cavity 3 is communicated with the balance tank 8 through a transparent conduction pipe 9 with a smooth inner wall, the transparent conduction pipe 9 can be made of toughened glass, and an upper travel switch 11 and a lower travel switch 12 for controlling the start and stop of the condenser 5 are respectively arranged in the transparent conduction pipe 9; a slidable piston 10 is arranged between the upper travel switch 11 and the lower travel switch 12, and the position of the piston 10 can be seen through the transparent conduction pipe 9.

Optionally, in the LNG insulation box, the balance tank 8 is provided with a pressure regulating valve 14, so that the piston 10 is close to the upper travel switch 11 in a state that the air pressure of the insulation cavity 3 and the air pressure of the balance tank 8 are balanced; the upper travel switch 11 is close to the end where the heat preservation cavity 3 is located, the lower travel switch 12 is close to the end where the balance tank 8 is located, the specific application is that according to the preserved temperature requirement, namely, the temperature in the heat preservation cavity 3 reaches the standard temperature by using the condenser 5, at the moment, the piston 10 moves to the upper travel switch 11 but does not contact through the pressurization or the pressure relief of the balance tank 8, and then the pressure regulating valve 14 is closed.

Optionally, in the LNG insulation box, the upper travel switch 11 is a closing switch of the condenser 5, and the lower travel switch 12 is a starting switch of the condenser 5.

Optionally, in the LNG insulation can, the inner box 1 is provided with the sealing opening 4 of the flange structure, and the sealing opening 4 of the flange structure is adopted to realize high-pressure storage of the inner box 1. To cope with the high pressure environment, the inner case 1 and the outer case 2 are made of corrosion-resistant stainless steel.

Optionally, in the LNG insulation can, a layer of heat insulation material is padded between the condenser 5 and the side wall of the outer box 2, so as to prevent the temperature of the insulation can from rising due to heat dissipation in the refrigeration process of the condenser 5. More preferably, the inner and outer cases 1 and 2 are barrel-shaped, which makes the distribution of the cooling channels 13 more uniform.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. An LNG insulation can, its characterized in that includes:

the heat preservation box comprises an inner box (1) and an outer box (2) wrapped outside the inner box (1), wherein a heat preservation cavity (3) is formed between the inner box (1) and the outer box (2);

a condenser (5) and a balance tank (8) are respectively fixed on the side wall of the outer box (2), a cooling channel (13) is spirally formed in the box wall of the outer box (2), and a liquid inlet pipe (6) and a liquid outlet pipe (7) of the condenser (5) are respectively connected with the head end and the tail end of the cooling channel (13) to form a liquid cooling circulation system;

the heat preservation cavity (3) is communicated with the balance tank (8) through a transparent conduction pipe (9) with a smooth inner wall, and an upper travel switch (11) and a lower travel switch (12) for controlling the condenser (5) to start and stop are respectively arranged in the transparent conduction pipe (9);

a slidable piston (10) is arranged between the upper travel switch (11) and the lower travel switch (12).

2. LNG incubator according to claim 1, characterised in that the surge tank (8) is provided with a pressure regulating valve (14) so that the piston (10) is close to the upper stroke switch (11) in a state of pressure equilibrium between the insulation chamber (3) and the surge tank (8);

the upper travel switch (11) is close to the end where the heat preservation cavity (3) is located, and the lower travel switch (12) is close to the end where the balance tank (8) is located.

3. LNG incubator according to claim 2, characterized in that the upper travel switch (11) is a closing switch of the condenser (5) and the lower travel switch (12) is an actuating switch of the condenser (5).

4. LNG insulation can according to claim 3, characterized in that the inner can (1) is provided with a sealing (4) of flange construction.

5. LNG insulation can according to claim 4, characterized in that the inner and outer boxes (1, 2) are made of corrosion resistant stainless steel.

6. LNG insulation can according to claim 5, characterized in that between the condenser (5) and the side walls of the outer can (2) there is a layer of insulation.

7. LNG insulation can according to claim 6, characterized in that the inner and outer boxes (1, 2) are tub shaped.