CN113513698A - Industrial gas low-temperature filling automatic control method - Google Patents
Industrial gas low-temperature filling automatic control method Download PDFInfo
- Publication number
- CN113513698A CN113513698A CN202110811141.1A CN202110811141A CN113513698A CN 113513698 A CN113513698 A CN 113513698A CN 202110811141 A CN202110811141 A CN 202110811141A CN 113513698 A CN113513698 A CN 113513698A
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- CN
- China
- Prior art keywords
- low
- temperature
- filling
- liquid pump
- bottle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 238000005429 filling process Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000006261 foam material Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000008016 vaporization Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
-
- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- 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
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/002—Automated filling apparatus
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- 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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
Abstract
The invention discloses an automatic control method for low-temperature filling of industrial gas, which comprises the following filling steps: checking an inflation bottle, wherein the inflation bottle is a carrier for filling industrial gas, and the inflation bottle is required to meet the filling requirement before the industrial gas is filled; the low-temperature liquid pump is connected, so that the shrinkage is uniform at low temperature, and the loss of internal resources is reduced; the inflation bottle is connected to the low-temperature liquid pump and precools the low-temperature liquid pump, a liquid inlet valve, a precooling valve and an air return valve of the low-temperature liquid pump are opened at the same time, and residual air at the outlet of the precooling valve is exhausted during precooling; gas filling, namely closing a precooling valve of a low-temperature liquid pump, adjusting the rotating speed of the low-temperature liquid pump to a balanced state by using a motor, starting to fill gas into the inflation bottle, and keeping track of whether the temperature of a bottle opening is in a normal state or not in the filling process; liquid drainage, namely, when the pressure in the inflation bottle meets the liquid drainage requirement, the liquid can be drained; and (5) after filling is finished, the low-temperature liquid pump is disassembled and stored after being closed.
Description
Technical Field
The invention relates to the technical field of gas conveying, in particular to an automatic control method for low-temperature filling of industrial gas.
Background
Industrial gas is bottled compressed liquid gas, is gaseous at normal temperature and normal pressure, has various types, and is mainly used in various industrial manufacturing aspects. Before the industrial gas is applied, the industrial gas needs to be filled and stored, so that the industrial gas is convenient to use in the later period. At present, the filling mode for industrial gas basically adopts a pressurizing and compressing mode, but the filling mode has low effect and great difficulty.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an automatic control method for low-temperature filling of industrial gas, which can effectively solve the problems in the background art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an automatic control method for low-temperature industrial gas filling comprises the following filling steps:
step S1: checking an inflation bottle, wherein the inflation bottle is a carrier for filling industrial gas, the inflation bottle is required to be ensured to meet the filling requirement before the industrial gas is filled, whether a depression exists on the surface and whether an exhaust port is complete or not are checked, if the depression is damaged, the vacuum degree is reduced and the inflation is not required to be filled, and the inflation bottle is required to be stored in a cool and ventilated place and is not suitable for being stored at a temperature higher than 30 ℃;
step S2: the low-temperature liquid pump is connected, internal parts shrink uniformly at low temperature, the structural symmetry is guaranteed, the thermal capacity of working parts in a low-temperature area is reduced, the loss of internal resources is reduced, cold shrinkage compensation is arranged on inlet and outlet pipelines, and heat insulation treatment is well carried out;
step S3: the inflation bottle is connected to the low-temperature liquid pump and precools the low-temperature liquid pump, a liquid inlet valve, a precooling valve and an air return valve of the low-temperature liquid pump are opened at the same time, and residual air at the outlet of the precooling valve is exhausted during precooling;
step S4: gas filling, namely closing a precooling valve of a low-temperature liquid pump, adjusting the rotating speed of the low-temperature liquid pump to a balanced state by using a motor, starting to fill gas into the inflation bottle, and keeping track of whether the temperature of a bottle opening is in a normal state or not in the filling process;
step S5: liquid drainage, namely, when the pressure in the inflation bottle meets the liquid drainage requirement, the liquid can be drained;
step S6: and (5) after filling is finished, the low-temperature liquid pump is disassembled and stored after being closed.
Further, in step S1, the inspection request of the air-filled bottle is to meet the standard, and the information for inspecting the air-filled bottle includes the production date, the effective date, and the like.
Further, in step S2, in order to prevent the low-temperature liquid from vaporizing, the pump body and the inlet pipeline are usually insulated by pearlife or foam material or directly insulated by vacuum, and the inlet and outlet pipelines are compensated by metal bellows.
Further, in step S3, when the liquid is discharged from the outlet of the pre-cooling valve during the pre-cooling process by the cryogenic liquid pump, the pre-cooling process is completed.
Further, in step S4, the speed of the cryogenic liquid pump is adjusted to be between 500 and 800 rpm under the control of the motor, and the temperature of the bottle mouth during the filling process should not be lower than 0 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the mode of filling the gas after the low-temperature treatment by the low-temperature liquid pump, improves the precooling treatment, leads the filled gas to be filled in a low-temperature environment, leads the filled gas to be completely treated at low temperature, improves the automation effect, ensures the filling temperature to be in a normal condition when filling the gas, avoids influencing the effect of filling industrial gas and has simple operation.
Drawings
FIG. 1 is a flow chart of the filling steps of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in FIG. 1, the invention provides an automatic control method for low-temperature industrial gas filling, which comprises the following filling steps:
step S1: checking an inflation bottle, wherein the inflation bottle is a carrier for filling industrial gas, the inflation bottle is required to be ensured to meet the filling requirement before the industrial gas is filled, whether a depression exists on the surface and whether an exhaust port is complete or not are checked, if the depression is damaged, the vacuum degree is reduced and the inflation is not required to be filled, and the inflation bottle is required to be stored in a cool and ventilated place and is not suitable for being stored at a temperature higher than 30 ℃;
step S2: the low-temperature liquid pump is connected, internal parts shrink uniformly at low temperature, the structural symmetry is guaranteed, the thermal capacity of working parts in a low-temperature area is reduced, the loss of internal resources is reduced, cold shrinkage compensation is arranged on inlet and outlet pipelines, and heat insulation treatment is well carried out;
step S3: the inflation bottle is connected to the low-temperature liquid pump and precools the low-temperature liquid pump, a liquid inlet valve, a precooling valve and an air return valve of the low-temperature liquid pump are opened at the same time, and residual air at the outlet of the precooling valve is exhausted during precooling;
step S4: gas filling, namely closing a precooling valve of a low-temperature liquid pump, adjusting the rotating speed of the low-temperature liquid pump to a balanced state by using a motor, starting to fill gas into the inflation bottle, and keeping track of whether the temperature of a bottle opening is in a normal state or not in the filling process;
step S5: liquid drainage, namely, when the pressure in the inflation bottle meets the liquid drainage requirement, the liquid can be drained;
step S6: and (5) after filling is finished, the low-temperature liquid pump is disassembled and stored after being closed.
In step S1, the inspection request of the air bottle is to meet the standard, the information for inspecting the air bottle includes the production date, the effective date, etc., and when the air bottle is found to be used illegally, the air bottle should be immediately stopped from being filled and discarded. .
In step S2, in order to prevent the low-temperature liquid from vaporizing, the pump body and the inlet pipeline are usually insulated by pearlife or foam material or directly insulated by vacuum, and the inlet and outlet pipelines are compensated by metal bellows.
In step S3, when the liquid is discharged from the outlet of the pre-cooling valve during the pre-cooling process by the cryogenic liquid pump, the pre-cooling process is completed.
In step S4, the speed of the low-temperature liquid pump is adjusted to be between 500 and 800 revolutions per minute under the control of the motor, and in the filling process, after the motor is started, the low-temperature liquid pump is started to slowly run from a low speed to a high speed, and when there is no noise and no leakage inside the low-temperature liquid pump, the temperature of the bottle opening is not lower than 0 ℃ in the filling process, so as to avoid the blockage caused by the frosting phenomenon.
Compared with the prior art, the invention adopts the mode of filling the gas after the low-temperature treatment by the low-temperature liquid pump, improves the precooling treatment, leads the filled gas to be filled in a low-temperature environment, leads the filled gas to be completely treated at low temperature, improves the automation effect, ensures the filling temperature to be in a normal condition when filling the gas, and avoids influencing the effect of filling the industrial gas.
The working principle is as follows: before filling, the inflation bottle needs to be further checked and guaranteed to be executed in an environment where fireworks are forbidden, after the inflation bottle is connected into a low-temperature liquid pump, precooling treatment is firstly carried out, residual air in the low-temperature liquid pump is removed, after precooling treatment, filling is carried out on the inflation bottle in a low-temperature environment, in the filling process, a normal temperature treatment state and the rotating speed of the low-temperature liquid pump are guaranteed to be in a balanced state, the filling effect is improved, and after filling is completed, the low-temperature liquid pump is detached and stored after closing.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. An automatic control method for low-temperature industrial gas filling is characterized by comprising the following filling steps:
step S1: checking an inflation bottle, wherein the inflation bottle is a carrier for filling industrial gas, the inflation bottle is required to be ensured to meet the filling requirement before the industrial gas is filled, whether a depression exists on the surface and whether an exhaust port is complete or not are checked, if the depression is damaged, the vacuum degree is reduced and the inflation is not required to be filled, and the inflation bottle is required to be stored in a cool and ventilated place and is not suitable for being stored at a temperature higher than 30 ℃;
step S2: the low-temperature liquid pump is connected, internal parts shrink uniformly at low temperature, the structural symmetry is guaranteed, the thermal capacity of working parts in a low-temperature area is reduced, the loss of internal resources is reduced, cold shrinkage compensation is arranged on inlet and outlet pipelines, and heat insulation treatment is well carried out;
step S3: the inflation bottle is connected to the low-temperature liquid pump and precools the low-temperature liquid pump, a liquid inlet valve, a precooling valve and an air return valve of the low-temperature liquid pump are opened at the same time, and residual air at the outlet of the precooling valve is exhausted during precooling;
step S4: gas filling, namely closing a precooling valve of a low-temperature liquid pump, adjusting the rotating speed of the low-temperature liquid pump to a balanced state by using a motor, starting to fill gas into the inflation bottle, and keeping track of whether the temperature of a bottle opening is in a normal state or not in the filling process;
step S5: liquid drainage, namely, when the pressure in the inflation bottle meets the liquid drainage requirement, the liquid can be drained;
step S6: and (5) after filling is finished, the low-temperature liquid pump is disassembled and stored after being closed.
2. The automatic control method for the low-temperature industrial gas filling according to claim 1, wherein the automatic control method comprises the following steps: in step S1, the inspection of the air-filled bottle is required to meet the standard, and the information for inspecting the air-filled bottle includes the production date, the expiration date, and the like.
3. The automatic control method for the low-temperature industrial gas filling according to claim 1, wherein the automatic control method comprises the following steps: in step S2, in order to prevent the low-temperature liquid from vaporizing, the pump body and the inlet pipeline are usually insulated by pearlife or foam material or directly insulated by vacuum, and the inlet and outlet pipelines are compensated by metal bellows.
4. The automatic control method for the low-temperature industrial gas filling according to claim 1, wherein the automatic control method comprises the following steps: in step S3, when the liquid is discharged from the outlet of the pre-cooling valve during the pre-cooling process by the cryogenic liquid pump, the pre-cooling process is completed.
5. The automatic control method for the low-temperature industrial gas filling according to claim 1, wherein the automatic control method comprises the following steps: in step S4, the speed of the cryogenic liquid pump is adjusted to 500-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110811141.1A CN113513698A (en) | 2021-07-19 | 2021-07-19 | Industrial gas low-temperature filling automatic control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110811141.1A CN113513698A (en) | 2021-07-19 | 2021-07-19 | Industrial gas low-temperature filling automatic control method |
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| CN113513698A true CN113513698A (en) | 2021-10-19 |
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| CN202110811141.1A Pending CN113513698A (en) | 2021-07-19 | 2021-07-19 | Industrial gas low-temperature filling automatic control method |
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Citations (6)
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| CN203686567U (en) * | 2013-11-15 | 2014-07-02 | 苏州金宏气体股份有限公司 | Novel liquid nitrogen Dewar flask filling device |
| CN204005208U (en) * | 2014-06-17 | 2014-12-10 | 北京航天发射技术研究所 | LNG Liquefied natural gas LNG refueling system and LNG filling machine thereof |
| CN105909969A (en) * | 2016-06-20 | 2016-08-31 | 浙江智海化工设备工程有限公司 | Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device |
| CN105953072A (en) * | 2016-06-30 | 2016-09-21 | 日照海达尔加气设备有限公司 | Gas dispenser for injecting liquefied natural gas while gas is mixed in |
| CN108468946A (en) * | 2018-05-24 | 2018-08-31 | 浙江智海化工设备工程有限公司 | A kind of the automation charging system and automation methods for filling of low-temperature liquid storage tank |
| CN212319420U (en) * | 2020-02-28 | 2021-01-08 | 河北润丰低温设备有限公司 | Low-temperature gas constant-pressure gas supply device |
-
2021
- 2021-07-19 CN CN202110811141.1A patent/CN113513698A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203686567U (en) * | 2013-11-15 | 2014-07-02 | 苏州金宏气体股份有限公司 | Novel liquid nitrogen Dewar flask filling device |
| CN204005208U (en) * | 2014-06-17 | 2014-12-10 | 北京航天发射技术研究所 | LNG Liquefied natural gas LNG refueling system and LNG filling machine thereof |
| CN105909969A (en) * | 2016-06-20 | 2016-08-31 | 浙江智海化工设备工程有限公司 | Zero-emission filling device for cryogenic liquid tank car and filling method of zero-emission filling device |
| CN105953072A (en) * | 2016-06-30 | 2016-09-21 | 日照海达尔加气设备有限公司 | Gas dispenser for injecting liquefied natural gas while gas is mixed in |
| CN108468946A (en) * | 2018-05-24 | 2018-08-31 | 浙江智海化工设备工程有限公司 | A kind of the automation charging system and automation methods for filling of low-temperature liquid storage tank |
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Application publication date: 20211019 |
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