A kind of improved cryogenic tank pearlife packing methodTechnical field
The present invention relates to pearlifes to load technical field, it is more particularly related to a kind of improved cryogenic tankPearlife 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 porousStructure, white, granular loose material, have capacity is small, thermal coefficient is low, chemical stability is good, it is non-ignitable, nontoxic, tasteless andThe 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 obtainedProduct forms hydrophobic structure wherein reinforced product is to spray organosilicon on expanded perlite surface.Product color, bulk density, ruleLattice 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, dayRight 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 processEnter 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 pearlifeAir filter bag is arranged in the duct, vacuumizes later to inside by the way that pearlife to be passed through inside pipeline for packing methodThen processing later will circulate to the gas inside pipeline using circulating pump to nitrogen is injected inside pipeline, thus will pipeThe air in road is discharged, and detects oxygen and moisture content inside pipeline later, opposite with the prior art, effectively will by nitrogenThe air that pearlife surface carries is separated, and is carried out uniformly comprehensive drying to pearlife, is avoided entering inside refrigerated storage tankAir, 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 sideMethod, 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 wetDegree 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 heatingIt 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 pearlifeIt 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, laterThe 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 suctionDevice, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneouslyDevice 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 insideGas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline laterInternal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior withPressure 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 pairThe 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 2-4sWithin, 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 protectedPressure 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-lustreSand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tankMultiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 20-30 seconds, laterWith 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 repeatedAbove-mentioned infusion step is filled again.
In a preferred embodiment, pearlife is carried out using vacuum drying agent when pearlife is dry in step 1It 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 awayExempt from sump interior and contains moisture and air.
In a preferred embodiment, step 3 issues language by alarm when detecting dust in air excessSound 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 pipelineThe 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 closeThat 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 6Filter 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-lustreSand is in drying regime, and pearlife is dried using vacuum drying agent when pearlife is dry, hair when preventing pearlife dryThe 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 leakageAir cleaned, pearlife is passed through inside pipeline later, air filter bag is set in the duct, later to inside carry outThen vacuumize process later will circulate to the gas inside pipeline using circulating pump to nitrogen is injected inside pipeline, fromAnd 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 throughNitrogen separates the air that pearlife surface carries, and carries out uniformly comprehensive drying to pearlife, avoids in refrigerated storage tankPortion enters air.
2, air filtering mask being dressed by worker personnel to construct, preparing wet/dry vacuum cleaner, air powder is setDirt detector detects the dust content in air in real time, prevents pearlife from leaking, when detecting powder in airVoice prompting alarm is issued by alarm when dirt excess, personnel quickly close all devices, and it is opposite with the prior art, effectivelyImprove 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 completelyDescription, 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 hairEmbodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative effortsExample, 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 wetDegree 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 heatingIt 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 pearlifeIt 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, laterThe 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 suctionDevice, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneouslyDevice 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 insideGas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline laterInternal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior withPressure 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 pairThe 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 itIt 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 guaranteedPressure 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-lustreSand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tankMultiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 20 seconds, later with spyThe 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-mentionedInfusion 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 wetDegree 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 heatingIt 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 pearlifeIt 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, laterThe 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 suctionDevice, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneouslyDevice 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 insideGas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline laterInternal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior withPressure 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 pairThe 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 itIt 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 guaranteedPressure 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-lustreSand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tankMultiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 25 seconds, later with spyThe 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-mentionedInfusion 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 wetDegree 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 heatingIt 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 pearlifeIt 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, laterThe 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 suctionDevice, setting air-borne dust detector detect the dust content in air in real time, prevent pearlife from leaking, simultaneouslyDevice 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 insideGas circulates, so that the air of pipeline is discharged, while to just to dry filter is internally heated, detecting pipeline laterInternal oxygen and moisture content；
Step 5: pearlife fill: pipeline is passed at the storage tank inside refrigerated storage tank later, using sump interior withPressure 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 pairThe 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 itIt 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 guaranteedPressure 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-lustreSand pipeline internal flow slowly or stagnation, nitrogen is discharged later and is compacted, while in the outside of refrigerated storage tankMultiple vibrators are set, refrigerated storage tank is vibrated during filling pearlife, time of vibration is 30 seconds, later with spyThe 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-mentionedInfusion 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, laterIt is circulated using circulating pump to the gas inside pipeline, so that the air of pipeline is discharged, detects the oxygen inside pipeline laterGas and moisture content are effectively separated the air that pearlife surface carries by nitrogen, are carried out to pearlife uniformly completeThe 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 inventionSpirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention itIt is interior.