CN211203629U

CN211203629U - Liquefied natural gas storage tank

Info

Publication number: CN211203629U
Application number: CN201922176534.0U
Authority: CN
Inventors: 刘艳海
Original assignee: Daqing Jinxing Gas Co ltd
Current assignee: Daqing Jinxing Gas Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-08-07
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a liquefied natural gas storage tank, including supporting seat, holding vessel main part, regulator, heat preservation, tank cavity, manometer, relief valve, service valve and alarm trigger device, the supporting seat is located the bottom of whole device, the supporting seat upper end is equipped with the holding vessel main part, holding vessel main part one side is equipped with the protecgulum, holding vessel main part opposite side is equipped with odorizing mouthful, the relief valve opposite side is equipped with the service valve, service valve one side is connected with the connecting pipe, connecting pipe one end is equipped with the valve, valve one side is equipped with alarm trigger device. The utility model discloses having set up pressure regulating device and having prevented that equipment from in the operation process, having the emergence of the abnormal conditions such as leaking, having set up relief valve and service valve, can also overhaul pressure regulating device when having guaranteed natural gas storage tank safety, set up the smelly mouth, the stink also can disperse thereupon when natural gas reveals, effectual warning people natural gas takes place to reveal.

Description

Liquefied natural gas storage tank

Technical Field

The utility model relates to a holding vessel technical field particularly, relates to a liquefied natural gas holding vessel.

Background

At present, domestic technologies of large L NG (liquefied natural gas) fuel gas tanks are basically mature, the large-scale NG fuel gas tanks are mainly used for L NG storage and transportation, a low-temperature normal-pressure mode is generally adopted, but relatively small L NG fuel gas tanks (which can store fuel and provide energy), research and development are rarely carried out at home, L NG fuel tank technologies used for special mixed fuel main machines for storage ships are in a starting stage, the output value is too small, the technical difficulty is high, the cost is high, the safety coefficient is high, the technological measures such as welding, heat treatment and the like are strict, L NG fuel pressure in the tanks is changed greatly in the moving process of ships, and external influence factors such as temperature are large, so that the L NG gas tanks suitable for inland river shipping still have a great market prospect, the existing L gas tanks are placed in the open air according to the standard requirements, but at present, a problem is faced, when ships are parked at present, L mixed fuel main machines stop running, NG 2 fuel in the gas tanks are stored statically, and when NG 23 is parked for the time, the temperature in the tanks is increased (NG 23 mixed fuel gas main machines are operated from L), and the gaseous fuel has a great safety problem.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquefied natural gas storage tank to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a liquefied natural gas storage tank comprises a supporting seat, a storage tank main body, a pressure regulating device, a heat preservation layer, a tank cavity, a pressure gauge, a safety valve, an inspection valve and an alarm triggering device, wherein the supporting seat is arranged at the bottom end of the whole device, the storage tank main body is arranged at the upper end of the supporting seat, a front cover is arranged on one side of the storage tank main body, an odorizing port is arranged on the other side of the storage tank main body, the tank cavity is arranged on the inner side of the storage tank main body, the heat preservation layer is arranged on the outer side of the tank cavity, the pressure regulating device is arranged on one side of the storage tank main body, an air outlet pipe is arranged on the pressure regulating device, a filter is arranged on the inner side of the air outlet pipe, the safety valve is arranged in the middle of the air, and one side of the valve is provided with the alarm triggering device.

Further, the supporting seat is welded with the storage tank main body, and the storage tank main body is welded on the front cover.

Further, the odor added into the odorizing port is tetrahydrothiophene, and the tetrahydrothiophene is colorless liquid.

Furthermore, the heat-insulating layer is arranged on the surface layer of the storage tank main body, and the main material of the heat-insulating layer is molded polyethylene foam plastic for heat insulation.

Furthermore, the inner surface and the outer surface of the tank cavity are subjected to degreasing treatment and acid pickling passivation, and the inner surface and the outer surface of the storage tank main body are subjected to sand blasting rust removal.

Further, the holding vessel main part front side is equipped with the fixed band, the fixed band cup joints with the holding vessel main part.

Further, the holding vessel main part is communicated with an air outlet pipe, and the air outlet pipe is communicated with the connecting pipe.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a liquefied natural gas storage tank prevents equipment at the operation in-process through having set up the pressure regulating device, has the emergence of the abnormal conditions such as leakage, has set up the relief valve and has overhauld the valve, can also overhaul the pressure regulating device when having guaranteed natural gas storage tank safety, and the last manometer of pressure regulating device knows the atmospheric pressure in the storage tank through the manometer, prevents the potential safety hazard of gas leakage, has guaranteed the safety of storage tank.

(2) The utility model discloses set up and added the smelly mouth, stink also can spill thereupon when natural gas reveals, effectual warning people natural gas takes place to reveal, has set up the heat preservation, prevents that the interior temperature of holding vessel from running off fast.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a liquefied natural gas storage tank according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a lng storage tank according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a pressure regulating device of a liquefied natural gas storage tank according to an embodiment of the present invention.

Reference numerals:

1. a supporting seat; 2. a storage tank main body; 3. a front cover; 4. a pressure regulating device; 5. a connecting pipe; 6. a valve; 7. adding an odor port; 8. a heat-insulating layer; 9. fixing belts; 10. a filter; 11. a canister cavity; 12. a pressure gauge; 13. a safety valve; 14. a service valve; 15. an air outlet pipe; 16. an alarm triggering device.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a liquefied natural gas storage tank according to an embodiment of the present invention includes a supporting base 1, a storage tank main body 2, a pressure regulating device 4, a heat insulating layer 8, a tank cavity 11, a pressure gauge 12, a safety valve 13, an inspection valve 14, and an alarm triggering device 16, wherein the supporting base 1 is located at a bottom end of the entire apparatus, the storage tank main body 2 is disposed at an upper end of the supporting base 1, a front cover 3 is disposed at one side of the storage tank main body 2, an odorizing port 7 is disposed at the other side of the storage tank main body 2, the tank cavity 11 is disposed at an inner side of the storage tank main body 2, the heat insulating layer 8 is disposed at an outer side of the tank cavity 11, the pressure regulating device 4 is disposed at one side of the storage tank main body 2, an outlet pipe 15 is disposed on the pressure regulating device 4, a filter 10 is disposed at an inner, the other side of the safety valve 13 is provided with the maintenance valve 14, one side of the maintenance valve 14 is connected with the connecting pipe 5, one end of the connecting pipe 5 is provided with the valve 6, and one side of the valve 6 is provided with the alarm triggering device 16.

Through the above technical scheme of the utility model, supporting seat 1 and the welding of holding vessel main part 2, holding vessel main part 2 welds in protecgulum 3, the foul smell of adding in the mouth 7 of odorizing is tetrahydrothiophene, and the main action of the mouth 7 of odorizing is whether being convenient for distinguish the natural gas and reveal. Can spill out along with the foul smell when natural gas reveals, play the effect of warning, tetrahydrothiophene is a colorless liquid, the top layer of holding vessel main part 2 is located to heat preservation 8, and the main action of heat preservation 8 prevents that the temperature in jar chamber 11 from running off fast, and heat preservation 8 main materials are adiabatic with moulding polyethylene foamed plastic, the outer surface all carries out degrease processing and pickling passivation in jar chamber 11, the sandblast rust cleaning has all been carried out to the outer surface in holding vessel

main part

2, 2 front sides of holding vessel main part are equipped with fixed band 9, and the main function of fixed band 9 is fixed holding vessel main part 2, fixed band 9 cup joints with holding vessel main part 2, holding vessel

main part

2 and 15 intercommunications of outlet duct, 15 and 5 intercommunications of connecting pipe.

When specifically using, the utility model relates to a liquefied natural gas storage tank, through having set up pressure regulating device 4 and prevent equipment at the operation in-process, there is the emergence of the abnormal conditions such as leakage, relief valve 13 and service valve 14 have been set up, can also overhaul pressure regulating device 4 when having guaranteed natural gas storage tank safety, pressure gauge 12 is last to the pressure regulating device, know the atmospheric pressure in the storage tank through the manometer, the potential safety hazard of gas leakage prevents to appear, the safety of storage tank has been guaranteed, odorization mouth 7 has been set up, the stink also can spill thereupon when natural gas is revealed, effectual warning people's natural gas takes place to reveal, heat preservation 8 has been set up, prevent that the temperature in the storage tank from running off fast.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The liquefied natural gas storage tank is characterized by comprising a supporting seat (1), a storage tank main body (2), a pressure regulating device (4), a heat preservation layer (8), a tank cavity (11), a pressure gauge (12), a safety valve (13), an inspection valve (14) and an alarm triggering device (16), wherein the supporting seat (1) is located at the bottom end of the whole device, the storage tank main body (2) is arranged at the upper end of the supporting seat (1), a front cover (3) is arranged at one side of the storage tank main body (2), an odorizing port (7) is arranged at the other side of the storage tank main body (2), the tank cavity (11) is arranged at the inner side of the storage tank main body (2), the heat preservation layer (8) is arranged at the outer side of the tank cavity (11), the pressure regulating device (4) is arranged at one side of the storage tank main body (2), and an, the alarm device is characterized in that a filter (10) is arranged on the inner side of the air outlet pipe (15), the safety valve (13) is arranged in the middle of the air outlet pipe (15), the pressure gauge (12) is arranged on one side of the safety valve (13), the maintenance valve (14) is arranged on the other side of the safety valve (13), one side of the maintenance valve (14) is connected with the connecting pipe (5), the valve (6) is arranged at one end of the connecting pipe (5), and the alarm triggering device (16) is arranged on one side of the valve (6).

2. Lng storage tank according to claim 1, characterized in that the support base (1) is welded to the tank body (2), and the tank body (2) is welded to the front cover (3).

3. The lng storage tank according to claim 1, wherein the odor gas added to the odorizing port (7) is tetrahydrothiophene, which is a colorless liquid.

4. The liquefied natural gas storage tank as claimed in claim 1, wherein the insulating layer (8) is provided on the surface of the storage tank main body (2), and the insulating layer (8) is mainly made of a molded polyethylene foam for thermal insulation.

5. The liquefied natural gas storage tank as claimed in claim 1, wherein the inner and outer surfaces of the tank cavity (11) are degreased and passivated by pickling, and the inner and outer surfaces of the storage tank main body (2) are blasted to remove rust.

6. The liquefied natural gas storage tank according to claim 1, wherein a fixing strap (9) is provided at a front side of the storage tank main body (2), and the fixing strap (9) is sleeved with the storage tank main body (2).

7. Liquefied natural gas storage tank according to claim 1, wherein the storage tank main body (2) is communicated with an outlet pipe (15), and the outlet pipe (15) is communicated with the connection pipe (5).