CN110410660A - A kind of improved cryogenic tank pearlife packing method - Google Patents
A kind of improved cryogenic tank pearlife packing method Download PDFInfo
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- CN110410660A CN110410660A CN201910692897.1A CN201910692897A CN110410660A CN 110410660 A CN110410660 A CN 110410660A CN 201910692897 A CN201910692897 A CN 201910692897A CN 110410660 A CN110410660 A CN 110410660A
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- pearlife
- air
- storage tank
- later
- pipeline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C3/00—Vessels not under pressure
- F17C3/02—Vessels not under pressure with provision for thermal insulation
- F17C3/04—Vessels not under pressure with provision for thermal insulation by insulating layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0304—Thermal insulations by solid means
- F17C2203/0337—Granular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/238—Filling of insulants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of improved cryogenic tank pearlife packing methods, field is loaded more particularly to pearlife, specifically includes the following steps: Step 1: the inspection and processing of pearlife early period: the humidity of the pearlife of air humidity and filling to filling place detects, ensure that pearlife is in drying regime, when the humidity of pearlife is more than 0.5, pearlife is thermally dried, heating time is 15min, ensure that the air humidity for loading place is maintained at 30%, while the quality of pearlife is detected.The present invention is by the way that pearlife to be passed through inside pipeline, vacuumize process is carried out to inside, it then will be to injecting nitrogen inside pipeline, it is circulated later using circulating pump to the gas inside pipeline, to which the air of pipeline is discharged, effectively the air that pearlife surface carries is separated by nitrogen, uniformly comprehensive drying is carried out to pearlife, avoids entering air inside refrigerated storage tank.
Description
Technical field
The present invention relates to pearlifes to load technical field, it is more particularly related to a kind of improved cryogenic tank
Pearlife packing method.
Background technique
Pearlife be it is a kind of material from acidic volcanic glass matter lava through broken, preheating, calcining expansion and made of have it is porous
Structure, white, granular loose material, have capacity is small, thermal coefficient is low, chemical stability is good, it is non-ignitable, nontoxic, tasteless and
The characteristic of sound-absorbing.
Pearlife is that selected granule is selected to make heat source in vertical shaft kiln through ore in sand form with natural gas by powder, and heating expansion is obtained
Product forms hydrophobic structure wherein reinforced product is to spray organosilicon on expanded perlite surface.Product color, bulk density, rule
Lattice are similar to normal expanded perlite, are mainly used for the construction of large-scale ultralow temperature heat enginnering insulating layer, oxygen space division unit such as processed, day
Right air-liquid hydrogen, liquid nitrogen, liquid oxygen refrigeration transportation car and boat, have good ultralow temperature thermal insulation property.
Processing when existing pearlife packing method loads pearlife is not thorough, easy to carry air in transmission process
Enter sump interior.
Summary of the invention
In order to overcome the drawbacks described above of the prior art, the embodiment of the present invention provides a kind of improved cryogenic tank pearlife
Air filter bag is arranged in the duct, vacuumizes later to inside by the way that pearlife to be passed through inside pipeline for packing method
Then processing later will circulate to the gas inside pipeline using circulating pump to nitrogen is injected inside pipeline, thus will pipe
The air in road is discharged, and detects oxygen and moisture content inside pipeline later, opposite with the prior art, effectively will by nitrogen
The air that pearlife surface carries is separated, and is carried out uniformly comprehensive drying to pearlife, is avoided entering inside refrigerated storage tank
Air, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of improved cryogenic tank pearlife filling side
Method, specifically includes the following steps:
Step 1: the inspection and processing of pearlife early period: the pearlife of air humidity and filling to filling place it is wet
Degree is detected, it is ensured that pearlife is in drying regime, and when the humidity of pearlife is more than 0.5, it is dry that pearlife is carried out heating
It is dry, heating time 15-17min, it is ensured that the air humidity for loading place is maintained at 30-40%, while to the quality of pearlife
It is detected, the compacted density of pearlife is maintained at 40-80kg/m3, and the moisture content of pearlife is less than 0.5%；
Step 2: refrigerated storage tank prepares: the sump interior of refrigerated storage tank being carried out vacuumize process by vacuum pump, later
The remaining air of storage tank is cleaned with compressed nitrogen, the pressure of interlayer is made to be maintained at 0.06-0.08Mpa；
Step 3: personnel safety prepares: worker personnel dress air filtering mask and construct, and prepare wet vacuum dust suction
Device, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneously
Device alarm device；
Step 4: pearlife pre-processes: pearlife is passed through inside pipeline later, air filter bag is set in the duct,
Vacuumize process is carried out to inside later, then will to nitrogen is injected inside pipeline, later using circulating pump to pipeline inside
Gas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline later
Internal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior with
Pressure difference inside pipeline, enables pearlife to smoothly enter sump interior；
Step 6: pearlife compaction treatment: the valve of refrigerated storage tank is opened later, nitrogen is discharged rapidly, realization pair
The decompression of sump interior is handled, from will be compacted to the pearlife of sump interior, later by the time being compacted every time control in 2-4s
Within, pressure drop is then waited, vacuum pump is again turned on later and the storage tank of cryogenic liquid tank to be filled is vacuumized, is protected
Pressure is negative pressure in card storage tank, while detecting the air content and humidity of sump interior；
Step 7: vibration processing: pearlife is filled to the filling mode of pearlife according in step 4 later, until pearly-lustre
Sand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tank
Multiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 20-30 seconds, later
With the filling situation of detector bar detection pearlife, confirmation storage tank is completely filled out, and if pearlife is loose or discovery has gap, is repeated
Above-mentioned infusion step is filled again.
In a preferred embodiment, pearlife is carried out using vacuum drying agent when pearlife is dry in step 1
It is dry, it prevents from leaking when pearlife is dry.
In a preferred embodiment, it needs to detect the air and humidity of sump interior in step 2, keep away
Exempt from sump interior and contains moisture and air.
In a preferred embodiment, step 3 issues language by alarm when detecting dust in air excess
Sound indicating alarm, personnel quickly close all devices.
In a preferred embodiment, nitrogen circulation processing is carried out to pearlife in step 4, nitrogen is in pipeline
The currency in portion is set as 3-5min.
In a preferred embodiment, in step 6 when nitrogen discharge, the valve of refrigerated storage tank needs to open and close
That closes is rapid.
In a preferred embodiment, it is installed in the opening to the valve of refrigerated storage tank in gas outlet in step 6
Filter prevents pearlife that storage tank is discharged with nitrogen.
Technical effect and advantage of the invention:
1, the present invention is detected by the humidity of the pearlife of air humidity and filling to filling place, it is ensured that pearly-lustre
Sand is in drying regime, and pearlife is dried using vacuum drying agent when pearlife is dry, hair when preventing pearlife dry
The sump interior of refrigerated storage tank is carried out vacuumize process by vacuum pump, is remained later with compressed nitrogen to storage tank by raw leakage
Air cleaned, pearlife is passed through inside pipeline later, air filter bag is set in the duct, later to inside carry out
Then vacuumize process later will circulate to the gas inside pipeline using circulating pump to nitrogen is injected inside pipeline, from
And the air of pipeline is discharged, the oxygen and moisture content inside pipeline are detected later, it is opposite with the prior art, effectively pass through
Nitrogen separates the air that pearlife surface carries, and carries out uniformly comprehensive drying to pearlife, avoids in refrigerated storage tank
Portion enters air.
2, air filtering mask being dressed by worker personnel to construct, preparing wet/dry vacuum cleaner, air powder is set
Dirt detector detects the dust content in air in real time, prevents pearlife from leaking, when detecting powder in air
Voice prompting alarm is issued by alarm when dirt excess, personnel quickly close all devices, and it is opposite with the prior art, effectively
Improve safety, improving warning effect, reaction speed when promoting pearlife leakage.
Specific embodiment
Below in conjunction with the embodiment in the present invention, technical solution in the embodiment of the present invention is carried out clearly and completely
Description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1:
The present invention provides a kind of improved cryogenic tank pearlife packing methods, specifically includes the following steps:
Step 1: the inspection and processing of pearlife early period: the pearlife of air humidity and filling to filling place it is wet
Degree is detected, it is ensured that pearlife is in drying regime, and when the humidity of pearlife is more than 0.5, it is dry that pearlife is carried out heating
It is dry, heating time 15min, it is ensured that the air humidity for loading place is maintained at 30%, while examining to the quality of pearlife
It surveys, the compacted density of pearlife is maintained at 40kg/m3, and the moisture content of pearlife is less than 0.5%；
Step 2: refrigerated storage tank prepares: the sump interior of refrigerated storage tank being carried out vacuumize process by vacuum pump, later
The remaining air of storage tank is cleaned with compressed nitrogen, the pressure of interlayer is made to be maintained at 0.06Mpa；
Step 3: personnel safety prepares: worker personnel dress air filtering mask and construct, and prepare wet vacuum dust suction
Device, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneously
Device alarm device；
Step 4: pearlife pre-processes: pearlife is passed through inside pipeline later, air filter bag is set in the duct,
Vacuumize process is carried out to inside later, then will to nitrogen is injected inside pipeline, later using circulating pump to pipeline inside
Gas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline later
Internal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior with
Pressure difference inside pipeline, enables pearlife to smoothly enter sump interior；
Step 6: pearlife compaction treatment: the valve of refrigerated storage tank is opened later, nitrogen is discharged rapidly, realization pair
The decompression of sump interior is handled, from will be compacted to the pearlife of sump interior, later by the time being compacted every time control 2s it
It is interior, pressure drop is then waited, vacuum pump is again turned on later and the storage tank of cryogenic liquid tank to be filled is vacuumized, is guaranteed
Pressure is negative pressure in storage tank, while detecting the air content and humidity of sump interior；
Step 7: vibration processing: pearlife is filled to the filling mode of pearlife according in step 4 later, until pearly-lustre
Sand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tank
Multiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 20 seconds, later with spy
The filling situation of stick detection pearlife is surveyed, confirmation storage tank completely fills out, and if pearlife is loose or discovery has gap, repeats above-mentioned
Infusion step is filled again.
Embodiment 2:
The present invention provides a kind of improved cryogenic tank pearlife packing methods, specifically includes the following steps:
Step 1: the inspection and processing of pearlife early period: the pearlife of air humidity and filling to filling place it is wet
Degree is detected, it is ensured that pearlife is in drying regime, and when the humidity of pearlife is more than 0.5, it is dry that pearlife is carried out heating
It is dry, heating time 16min, it is ensured that the air humidity for loading place is maintained at 35%, while examining to the quality of pearlife
It surveys, the compacted density of pearlife is maintained at 60kg/m3, and the moisture content of pearlife is less than 0.5%；
Step 2: refrigerated storage tank prepares: the sump interior of refrigerated storage tank being carried out vacuumize process by vacuum pump, later
The remaining air of storage tank is cleaned with compressed nitrogen, the pressure of interlayer is made to be maintained at 0.07Mpa；
Step 3: personnel safety prepares: worker personnel dress air filtering mask and construct, and prepare wet vacuum dust suction
Device, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneously
Device alarm device；
Step 4: pearlife pre-processes: pearlife is passed through inside pipeline later, air filter bag is set in the duct,
Vacuumize process is carried out to inside later, then will to nitrogen is injected inside pipeline, later using circulating pump to pipeline inside
Gas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline later
Internal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior with
Pressure difference inside pipeline, enables pearlife to smoothly enter sump interior；
Step 6: pearlife compaction treatment: the valve of refrigerated storage tank is opened later, nitrogen is discharged rapidly, realization pair
The decompression of sump interior is handled, from will be compacted to the pearlife of sump interior, later by the time being compacted every time control 3s it
It is interior, pressure drop is then waited, vacuum pump is again turned on later and the storage tank of cryogenic liquid tank to be filled is vacuumized, is guaranteed
Pressure is negative pressure in storage tank, while detecting the air content and humidity of sump interior；
Step 7: vibration processing: pearlife is filled to the filling mode of pearlife according in step 4 later, until pearly-lustre
Sand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tank
Multiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 25 seconds, later with spy
The filling situation of stick detection pearlife is surveyed, confirmation storage tank completely fills out, and if pearlife is loose or discovery has gap, repeats above-mentioned
Infusion step is filled again.
Embodiment 3:
The present invention provides a kind of improved cryogenic tank pearlife packing methods, specifically includes the following steps:
Step 1: the inspection and processing of pearlife early period: the pearlife of air humidity and filling to filling place it is wet
Degree is detected, it is ensured that pearlife is in drying regime, and when the humidity of pearlife is more than 0.5, it is dry that pearlife is carried out heating
It is dry, heating time 17min, it is ensured that the air humidity for loading place is maintained at 40%, while examining to the quality of pearlife
It surveys, the compacted density of pearlife is maintained at 80kg/m3, and the moisture content of pearlife is less than 0.5%；
Step 2: refrigerated storage tank prepares: the sump interior of refrigerated storage tank being carried out vacuumize process by vacuum pump, later
The remaining air of storage tank is cleaned with compressed nitrogen, the pressure of interlayer is made to be maintained at 0.08Mpa；
Step 3: personnel safety prepares: worker personnel dress air filtering mask and construct, and prepare wet vacuum dust suction
Device, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneously
Device alarm device；
Step 4: pearlife pre-processes: pearlife is passed through inside pipeline later, air filter bag is set in the duct,
Vacuumize process is carried out to inside later, then will to nitrogen is injected inside pipeline, later using circulating pump to pipeline inside
Gas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline later
Internal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior with
Pressure difference inside pipeline, enables pearlife to smoothly enter sump interior；
Step 6: pearlife compaction treatment: the valve of refrigerated storage tank is opened later, nitrogen is discharged rapidly, realization pair
The decompression of sump interior is handled, from will be compacted to the pearlife of sump interior, later by the time being compacted every time control 4s it
It is interior, pressure drop is then waited, vacuum pump is again turned on later and the storage tank of cryogenic liquid tank to be filled is vacuumized, is guaranteed
Pressure is negative pressure in storage tank, while detecting the air content and humidity of sump interior；
Step 7: vibration processing: pearlife is filled to the filling mode of pearlife according in step 4 later, until pearly-lustre
Sand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tank
Multiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 30 seconds, later with spy
The filling situation of stick detection pearlife is surveyed, confirmation storage tank completely fills out, and if pearlife is loose or discovery has gap, repeats above-mentioned
Infusion step is filled again.
Embodiment 4:
The method being respectively adopted in above-described embodiment 1-3 loads pearlife, obtains following data:
As seen from the above table, the type of feed in embodiment 2 loads pearlife, and pearlife is passed through inside pipeline,
Air filter bag is set in the duct, vacuumize process is carried out to inside later, it then will be to nitrogen be injected inside pipeline, later
It is circulated using circulating pump to the gas inside pipeline, so that the air of pipeline is discharged, detects the oxygen inside pipeline later
Gas and moisture content are effectively separated the air that pearlife surface carries by nitrogen, are carried out to pearlife uniformly complete
The drying in face avoids entering air inside refrigerated storage tank.
Last: the foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, all in the present invention
Spirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.
Claims (7)
1. a kind of improved cryogenic tank pearlife packing method, it is characterised in that: specifically includes the following steps:
Step 1: the inspection and processing of pearlife early period: the humidity of the pearlife of air humidity and filling to filling place into
Row detection, it is ensured that pearlife is in drying regime, when the humidity of pearlife is more than 0.5, pearlife is thermally dried, is added
The hot time is 15-17min, it is ensured that the air humidity for loading place is maintained at 30-40%, while examining to the quality of pearlife
It surveys, the compacted density of pearlife is maintained at 40-80kg/m3, and the moisture content of pearlife is less than 0.5%；
Step 2: refrigerated storage tank prepares: the sump interior of refrigerated storage tank being carried out vacuumize process by vacuum pump, later with pressure
Contracting nitrogen cleans the remaining air of storage tank, and the pressure of interlayer is made to be maintained at 0.06-0.08Mpa；
Step 3: personnel safety prepares: worker personnel dress air filtering mask and construct, and prepare wet/dry vacuum cleaner,
Air-borne dust detector is arranged to detect the dust content in air in real time, prevents pearlife from leaking, sets simultaneously
Standby alarm device；
Step 4: pearlife pre-processes: pearlife being passed through inside pipeline later, air filter bag is arranged in the duct, later
Vacuumize process is carried out to inside, it then will be to nitrogen be injected inside pipeline, later using circulating pump to the gas inside pipeline
It circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting inside pipeline later
Oxygen and moisture content；
Step 5: pearlife is filled: pipeline being passed at the storage tank inside refrigerated storage tank later, utilizes sump interior and pipeline
Internal pressure difference, enables pearlife to smoothly enter sump interior；
Step 6: pearlife compaction treatment: later opening the valve of refrigerated storage tank, nitrogen is discharged rapidly, realize to storage tank
Internal decompression processing later controls the time being compacted every time within 2-4s from will be compacted to the pearlife of sump interior,
Then pressure drop is waited, vacuum pump is again turned on later and the storage tank of cryogenic liquid tank to be filled is vacuumized, guarantees storage
Pressure is negative pressure in slot, while detecting the air content and humidity of sump interior；
Step 7: vibration processing: pearlife is filled to the filling mode of pearlife according in step 4 later, until pearlife exists
Pipeline internal flow is slow or stagnates, and nitrogen is discharged later and is compacted, while being arranged in the outside of refrigerated storage tank
Multiple vibrators vibrate refrigerated storage tank during filling pearlife, and time of vibration is 20-30 seconds, later with spy
The filling situation of stick detection pearlife is surveyed, confirmation storage tank completely fills out, and if pearlife is loose or discovery has gap, repeats above-mentioned
Infusion step is filled again.
2. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: in step 1
Pearlife is dried using vacuum drying agent when pearlife is dry, prevents from leaking when pearlife is dry.
3. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: in step 2
It needs to detect the air and humidity of sump interior, sump interior is avoided to contain moisture and air.
4. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: step 3 is worked as
Voice prompting alarm is issued by alarm when detecting dust in air excess, personnel quickly close all devices.
5. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: in step 4
Nitrogen circulation processing is carried out to pearlife, currency of the nitrogen inside pipeline is set as 3-5min.
6. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: in step 6
When nitrogen discharge, the valve needs of refrigerated storage tank open and close rapid.
7. a kind of improved cryogenic tank pearlife packing method according to claim 1, it is characterised in that: in step 6
Filter is installed in gas outlet in the opening to the valve of refrigerated storage tank, prevents pearlife that storage tank is discharged with nitrogen.
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| CN111810829A (en) * | 2020-07-20 | 2020-10-23 | 江苏建业化工装备有限公司 | High vacuum heat insulation method for small low-temperature multilayer storage tank |
| CN111810829B (en) * | 2020-07-20 | 2022-03-22 | 江苏建业化工装备有限公司 | High vacuum heat insulation method for small low-temperature multilayer storage tank |
| CN111928106A (en) * | 2020-07-24 | 2020-11-13 | 北京金海鑫压力容器制造有限公司 | Sand adding system and sand adding method for storage tank |
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Inventor after: Han Xiaoming Inventor after: Zhou Jilong Inventor after: Wang Hao Inventor after: Zhang Jing Inventor after: Bao Wenke Inventor after: Shi Peishan Inventor after: Yang Xingke Inventor before: Wang Hao |
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Application publication date: 20191105 |