CN216844121U - Vertical low-temperature liquid storage gas cylinder - Google Patents
Vertical low-temperature liquid storage gas cylinder Download PDFInfo
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- CN216844121U CN216844121U CN202120532278.9U CN202120532278U CN216844121U CN 216844121 U CN216844121 U CN 216844121U CN 202120532278 U CN202120532278 U CN 202120532278U CN 216844121 U CN216844121 U CN 216844121U
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Abstract
The utility model discloses a vertical low temperature stores liquid gas cylinder, include: an outer cylinder and an inner cylinder; a vacuum interlayer is arranged between the inner cylinder and the outer cylinder; a vacuumizing port is arranged on the outer barrel, and a plugging device is arranged in the vacuumizing port; the inner and outer cylinders are mutually supported through an upper supporting structure and a lower supporting structure, a distribution head is fixedly arranged on an outer upper end enclosure of the outer cylinder, a plurality of mutually independent connecting channels are arranged in the distribution head, a liquid level sensor, an inner liquid inlet pipe, an inner liquid outlet pipe and an inner hollow pipe are also arranged in the distribution head, the inner liquid inlet pipe, the inner liquid outlet pipe and the inner hollow pipe are respectively connected with the corresponding connecting channels in the distribution head in a one-to-one correspondence manner, a reserved housing is arranged on the inner wall of the inner upper end enclosure of the inner cylinder, a reserved space is formed between the inner upper end enclosure and the reserved housing in a matching manner, and the reserved space is communicated with a liquid storage space of the inner cylinder through a reserved through hole at the bottom of the reserved housing; after the gas cylinder is filled, the volume of the gas phase space in the reserved space is not less than the volume of the safe gas phase space required by the low-temperature liquid storage gas cylinder. The vertical gas cylinder can conveniently have a safe gas phase space.
Description
Technical Field
The utility model relates to a be used for storing cryogenic liquids like liquefied natural gas, liquid hydrogen's gas cylinder, concretely relates to vertical gas cylinder that stores cryogenic liquids.
Background
In the storage of cryogenic liquids such as liquefied natural gas, liquid hydrogen, vertical gas cylinders are sometimes used. Generally, the vertical low-temperature liquid storage gas cylinder adopts a double-layer structure of an outer cylinder and an inner cylinder, a vacuum interlayer is formed between the inner cylinder and the outer cylinder, and the outer cylinder comprises: outer barrel and connect outer upper cover and the bottom plate on outer barrel, the inner tube includes: the inner cylinder body, and an inner upper end enclosure and an inner lower end enclosure which are connected on the inner cylinder body. The interior, urceolus of vertical low temperature liquid storage gas cylinder support each other through the last bearing structure who supports between outer upper cover and interior upper cover and the lower bearing structure who supports between interior low head and the bed plate, still is provided with inside pipeline unit and level sensor, and inside pipeline unit includes: interior feed liquor pipe, interior drain pipe and interior drain pipe, the fixed distribution head that is provided with in the central through hole of outer upper cover, the lower extreme of distribution head is fixed with last bearing structure's upper end, be provided with in the distribution head can with interior feed liquor pipe, interior drain pipe, a plurality of connecting channel that interior drain pipe one-to-one is connected, can dock each pipeline in the gas cylinder and the pipeline that the gas cylinder corresponds one-to-one through these connecting channel. The volume of the low-temperature liquid filled in the vertical low-temperature liquid storage gas cylinder is not more than 90% of the volume of the inner cavity of the inner cylinder, so that a safe gas phase space can be formed at the top of the inner cylinder, and the pressure in the inner cylinder cannot rise rapidly after the low-temperature liquid in the vertical gas cylinder is heated and gasified, thereby avoiding potential safety hazards. At present, a safe gas phase space is formed in a vertical gas cylinder by arranging an overflow device on the gas cylinder, and the structure of the overflow device comprises: the overflow pipe is arranged on the vertical low-temperature liquid storage cylinder, the overflow port of the overflow pipe extending into the inner cylinder is positioned at a set height in the inner cylinder, and the overflow pipe is provided with an overflow valve. Before the vertical low-temperature liquid storage cylinder is filled with the low-temperature liquid, the overflow valve is opened firstly, then the low-temperature liquid is filled, when the liquid level of the low-temperature liquid in the vertical low-temperature liquid storage cylinder reaches the height of the overflow port, the low-temperature liquid flows out from the overflow pipe, and at the moment, the overflow valve is manually closed, so that the filling process is completed. The space above the overflow port in the inner cylinder is the safe gas phase space. The vertical low-temperature liquid storage cylinder with the structure has the following defects: before filling the cryogenic liquid, an operator sometimes forgets to open the overflow valve to directly fill the cryogenic liquid, so that after the cryogenic liquid enters the inner cylinder, the air temperature in the inner cylinder can rapidly drop and part of air in the inner cylinder can be liquefied at low temperature, the air retention in the inner cylinder can be greatly reduced, when the cryogenic liquid in the inner cylinder is filled to the alarm pressure or the set pressure, the gas phase space reserved in the vertical cryogenic liquid storage cylinder can be very narrow, so that the vertical cryogenic liquid storage cylinder has no safe gas phase space, and great potential safety hazard is caused.
In the existing horizontal low-temperature liquid storage gas cylinder, a reserved cover casing is fixedly arranged on the inner wall of an inner rear end socket of an inner cylinder, a reserved space capable of balancing the pressure of gas in the inner cylinder is defined between the reserved cover casing and the inner rear end socket, and most of the reserved space is a gas phase space when the horizontal low-temperature liquid storage gas cylinder works normally.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an: to provide a vertical cryogenic liquid storage cylinder which can be easily provided with a safe gas phase space without providing an overflow device.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: a vertical cryogenic liquid storage cylinder comprising: the outer cylinder comprises an outer upper end enclosure, an outer cylinder body and a bottom plate which are connected with each other; the inner cylinder comprises an inner upper end enclosure, an inner cylinder body and an inner lower end enclosure which are connected with each other; a vacuum interlayer is arranged between the inner cylinder and the outer cylinder; the outer cylinder is provided with a vacuumizing port, and a plugging device capable of plugging the vacuumizing port is arranged in the vacuumizing port; the inner and outer cylinders of the gas cylinder are mutually supported by an upper supporting structure supported between an outer upper end enclosure and an inner upper end enclosure and a lower supporting structure supported between a bottom plate and an inner lower end enclosure, a distribution head is fixedly arranged on the outer upper end enclosure, a plurality of mutually independent connecting channels are arranged in the distribution head, a liquid level sensor, an inner liquid inlet pipe, an inner liquid outlet pipe and an inner hollow pipe are also arranged, the inner liquid inlet pipe, the inner liquid outlet pipe and the inner hollow pipe are respectively connected with the corresponding connecting channels in the distribution head in a one-to-one correspondence manner, a reserved housing is arranged on the inner wall of the inner upper end enclosure, a reserved space is formed between the inner upper end enclosure and the reserved housing in a matching manner, and the reserved space is communicated with a liquid storage space of the inner cylinder through a reserved through hole at the bottom of the reserved housing; after the gas cylinder is filled, the volume of the gas phase space in the reserved space is not less than the volume of the safe gas phase space required by the low-temperature liquid storage gas cylinder.
Further, the above-mentioned vertical cryogenic liquid storage cylinder, wherein: the diameter D of the reserved through hole is more than or equal to 2mm and less than or equal to 4 mm.
Further, the above-mentioned vertical cryogenic liquid storage cylinder, wherein: a transition pipe is arranged in the reserved space, the upper end of the transition pipe is communicated with the inner cavity of the upper supporting structure through a through hole on the inner upper sealing head, the lower end of the transition pipe is communicated with the liquid storage space through a through hole on the reserved housing, and the upper end and the lower end of the transition pipe are respectively in sealing butt joint with the inner upper sealing head and the through hole on the reserved housing; the lower end of the inner liquid outlet pipe enters the transition pipe through the through hole of the inner upper end enclosure and then extends downwards into the bottom of the inner barrel through the through hole on the reserved housing, and the lower ends of the inner hollow pipe and the inner liquid inlet pipe both enter the transition pipe through the through hole of the inner upper end enclosure; when the gas cylinder works, the lower end of the inner hollow pipe is always positioned in the gas phase space in the transition pipe.
Further, the above vertical cryogenic liquid storage cylinder, wherein: when the gas cylinder works, the lower end of the inner liquid inlet pipe is always positioned in the gas phase space in the transition pipe.
Further, the above-mentioned vertical cryogenic liquid storage cylinder, wherein: the distribution head is fixed in the central through hole of the outer upper sealing head, the through hole on the inner upper sealing head is the central through hole of the inner upper sealing head, and the through hole on the reserved housing is the central through hole of the reserved housing.
Further, the above-mentioned vertical cryogenic liquid storage cylinder, wherein: the vacuum pumping port is arranged on the outer upper end socket near the distribution head.
Further, the above vertical cryogenic liquid storage cylinder, wherein: a plurality of reinforcing plates are circumferentially arranged on the inner wall of the outer upper end socket close to the distribution head at intervals.
The utility model has the advantages that: the inner wall of the inner upper end socket of the vertical low-temperature liquid storage cylinder is provided with the reserved housing, the reserved space is formed by matching the inner upper end socket and the reserved housing, the reserved space is communicated with the liquid storage space of the inner cylinder through the reserved through hole at the bottom of the reserved housing, when the vertical low-temperature liquid storage cylinder is filled, the air temperature in the reserved space cannot rapidly drop, the proportion of air liquefaction in the reserved space is extremely low after filling is completed, and therefore the volume of the gas phase space in the reserved space is not smaller than that of the safe gas phase space required by the gas cylinder, and the vertical low-temperature liquid storage cylinder with the structure can conveniently have the safe gas phase space without an overflow device.
Drawings
Fig. 1 is a schematic structural view of a vertical cryogenic liquid storage cylinder according to the present invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1 and 2, a vertical cryogenic liquid storage cylinder includes: the outer cylinder 1 comprises an outer upper end enclosure 12, an outer cylinder body 11 and a bottom plate 13 which are connected with each other; the inner cylinder 2 comprises an inner upper end enclosure 22, an inner cylinder body 21 and an inner lower end enclosure 23 which are connected with each other; a vacuum interlayer 15 is arranged between the inner cylinder 2 and the outer cylinder 1; the outer cylinder 1 is provided with a vacuumizing port 6, and a plugging device 61 capable of plugging the vacuumizing port is arranged in the vacuumizing port 6, wherein in the embodiment, the plugging device 61 is a technical device commonly used in the field of low-temperature liquid storage cylinders, for example, a common vacuum plug can be adopted; the inner cylinder and the outer cylinder of the vertical gas cylinder are mutually supported by an upper supporting structure 3 supported between an outer upper sealing head 12 and an inner upper sealing head 22 and a lower supporting structure 4 supported between a bottom plate 13 and an inner lower sealing head 23, a distribution head 31 is fixedly arranged on the outer upper sealing head 12, and a plurality of mutually independent connecting channels are arranged in the distribution head 3; a liquid level sensor 54, and an inner liquid inlet pipe 51, an inner liquid outlet pipe 52 and an inner hollow pipe 53 which are respectively connected with the corresponding connecting channels in the distribution head in a one-to-one correspondence manner are also arranged; the inner wall of the inner upper sealing head 22 is provided with a reserved housing 8, a reserved space 82 is formed between the inner upper sealing head 22 and the reserved housing 8 in a matching way, and the reserved space 82 is communicated with the liquid storage space 25 of the inner cylinder 2 through a reserved through hole 81 at the bottom of the reserved housing; after the vertical cryogenic liquid storage cylinder is filled, the volume of the gas phase space in the reserved space 82 is not less than the volume of the safe gas phase space required by the cylinder. When the vertical low-temperature liquid storage cylinder is filled with low-temperature liquid, the inner cavity of the inner cylinder 2 is divided into the liquid storage space 25 and the reserved space 82 by the reserved cover 8, after the low-temperature liquid enters the liquid storage space 25 of the inner cylinder 2 through the inner liquid inlet pipe 51, the air temperature in the liquid storage space 25 can rapidly drop, so that part of air in the liquid storage space 25 can be liquefied at low temperature, and after the reserved cover 8 is arranged, because the air in the reserved space 82 is not in direct contact with the low-temperature liquid, the air temperature in the reserved space 82 can not rapidly drop, so that the proportion of air liquefaction in the reserved space 82 is extremely low when the filling is finished. Therefore, after the low-temperature liquid in the gas cylinder is filled to the set pressure, the gas phase space in the gas cylinder can be ensured not to be smaller than the safe gas phase space required by the gas cylinder. In practical use, the diameter D of the reserved through hole 81 is more than or equal to 2mm and less than or equal to 4 mm. The reserved through hole 81 in the range can keep enough gas phase space in the reserved space 82 when the gas cylinder works, so that safe gas phase space can be ensured in the gas cylinder.
In this embodiment, in order to facilitate the manufacture of the vertical gas cylinder, the transition pipe 9 is disposed in the reserved space 82, the upper end of the transition pipe 9 is communicated with the inner cavity of the upper support structure 3 through the through hole on the inner upper seal head 22, the lower end of the transition pipe 9 is communicated with the liquid storage space 25 through the through hole on the reserved housing 8, and the upper end and the lower end of the transition pipe 9 are in sealed butt joint with the through holes on the inner upper seal head 22 and the reserved housing 8, respectively. The lower end of the inner liquid outlet pipe 52 enters the transition pipe 9 through the through hole of the inner upper end enclosure 22, and then extends downwards to the bottom of the inner cylinder 2 through the through hole on the reserved housing 8, and the lower ends of the inner hollow pipe 53 and the inner liquid inlet pipe 51 both enter the transition pipe 9 through the through hole of the inner upper end enclosure 22; when the vertical low-temperature liquid storage cylinder works, the lower end of the inner hollow pipe 53 is always positioned in the gas phase space in the transition pipe 9. In order to reduce the thermal conductivity of the external heat transferred to the cryogenic liquid through the inner liquid inlet pipe 51, the lower end of the inner liquid inlet pipe 51 is always located in the gas phase space inside the transition pipe 9 when the vertical cryogenic liquid storage tank is operated.
In order to enable the structure of the vertical gas cylinder to be more reasonable and stable, the distribution head 31 is fixed in a central through hole of the outer upper sealing head 12, a through hole on the inner upper sealing head 22 is the central through hole of the inner upper sealing head 22, and a through hole on the reserved encloser 8 is the central through hole of the reserved encloser 8.
In this embodiment, the vacuum-pumping port 6 is provided on the outer upper head 12 near the distribution head 31, so that the gas in the vacuum jacket space 15 can be rapidly discharged.
In this embodiment, because the outer upper head 12 and the distribution head 31 bear a large load, in order to prevent the middle portion of the outer upper head 12 from sinking, a plurality of reinforcing plates 7 are circumferentially arranged on the inner wall of the outer upper head 12 close to the distribution head 31 at intervals.
The utility model has the advantages that: the inner wall of the inner upper head 22 of the vertical low-temperature liquid storage cylinder is provided with the reserved housing 8, the reserved space 82 is formed by matching the inner upper head 22 and the reserved housing 8, the reserved space 82 is communicated with the liquid storage space 25 of the inner cylinder 2 through the reserved through hole 81 at the bottom of the reserved housing, when the vertical low-temperature liquid storage cylinder is filled, the air temperature in the reserved space 82 cannot rapidly drop, the proportion of air liquefaction in the reserved space 82 is extremely low after filling is completed, and therefore the volume of the gas phase space in the reserved space 82 is not smaller than that of the safety gas phase space required by the gas cylinder, and the vertical low-temperature liquid storage cylinder with the structure can conveniently have the safety gas phase space without an overflow device.
Claims (7)
1. A vertical cryogenic liquid storage cylinder comprising: the outer cylinder comprises an outer upper end enclosure, an outer cylinder body and a bottom plate which are connected with each other; the inner cylinder comprises an inner upper end enclosure, an inner cylinder body and an inner lower end enclosure which are connected with each other; a vacuum interlayer is arranged between the inner cylinder and the outer cylinder; the outer cylinder is provided with a vacuumizing port, and a plugging device capable of plugging the vacuumizing port is arranged in the vacuumizing port; the gas cylinder in, the urceolus supports each other through supporting last bearing structure between outer upper cover and interior upper cover and supporting the under bracing structure between dull and stereotyped and interior low head, the fixed distributing head that is provided with on outer upper cover, be provided with a plurality of mutually independent linking channel in the distributing head, still be provided with level sensor and respectively with the interior feed liquor pipe that the linking channel one-to-one that corresponds of correspondence in the distributing head is connected, interior drain pipe and interior evacuation pipe, its characterized in that: a reserved housing is arranged on the inner wall of the inner upper sealing head, a reserved space is formed between the inner upper sealing head and the reserved housing in a matched mode, and the reserved space is communicated with a liquid storage space of the inner cylinder through a reserved through hole in the bottom of the reserved housing; after the gas cylinder is filled, the volume of the gas phase space in the reserved space is not less than the volume of the safe gas phase space required by the low-temperature liquid storage gas cylinder.
2. A vertical cryogenic liquid receiver cylinder according to claim 1, characterized in that: the diameter D of the reserved through hole is more than or equal to 2mm and less than or equal to 4 mm.
3. A vertical cryogenic liquid storage cylinder according to claim 1 or 2, characterized in that: a transition pipe is arranged in the reserved space, the upper end of the transition pipe is communicated with the inner cavity of the upper supporting structure through a through hole on the inner upper sealing head, the lower end of the transition pipe is communicated with the liquid storage space through a through hole on the reserved housing, and the upper end and the lower end of the transition pipe are respectively in sealing butt joint with the inner upper sealing head and the through hole on the reserved housing; the lower end of the inner liquid outlet pipe enters the transition pipe through the through hole of the inner upper end enclosure and then extends downwards into the bottom of the inner barrel through the through hole on the reserved housing, and the lower ends of the inner hollow pipe and the inner liquid inlet pipe both enter the transition pipe through the through hole of the inner upper end enclosure; when the gas cylinder works, the lower end of the inner hollow pipe is always positioned in the gas phase space in the transition pipe.
4. A vertical cryogenic liquid storage cylinder according to claim 3, characterized in that: when the gas cylinder works, the lower end of the inner liquid inlet pipe is always positioned in the gas phase space in the transition pipe.
5. A vertical cryogenic liquid storage cylinder according to claim 3, characterized in that: the distribution head is fixed in the central through hole of the outer upper sealing head, the through hole on the inner upper sealing head is the central through hole of the inner upper sealing head, and the through hole on the reserved housing is the central through hole of the reserved housing.
6. A vertical cryogenic liquid storage cylinder according to claim 5, characterized in that: the vacuum pumping port is arranged on the outer upper end socket near the distribution head.
7. A vertical cryogenic liquid storage cylinder according to claim 5, characterized in that: a plurality of reinforcing plates are circumferentially arranged on the inner wall of the outer upper end enclosure close to the distribution head at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120532278.9U CN216844121U (en) | 2022-04-07 | 2022-04-07 | Vertical low-temperature liquid storage gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120532278.9U CN216844121U (en) | 2022-04-07 | 2022-04-07 | Vertical low-temperature liquid storage gas cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN216844121U true CN216844121U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120532278.9U Active CN216844121U (en) | 2022-04-07 | 2022-04-07 | Vertical low-temperature liquid storage gas cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN216844121U (en) |
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2022
- 2022-04-07 CN CN202120532278.9U patent/CN216844121U/en active Active
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