CN111074874A - Can realize remote monitoring's high-efficient hot stick - Google Patents
Can realize remote monitoring's high-efficient hot stick Download PDFInfo
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- CN111074874A CN111074874A CN201911264289.7A CN201911264289A CN111074874A CN 111074874 A CN111074874 A CN 111074874A CN 201911264289 A CN201911264289 A CN 201911264289A CN 111074874 A CN111074874 A CN 111074874A
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- heat
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- rod
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Agronomy & Crop Science (AREA)
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Abstract
The invention discloses a high-efficiency heat rod capable of realizing remote monitoring, which comprises a tubular shell, heat dissipation section sealing covers and evaporation section sealing covers, wherein the heat dissipation section sealing covers and the evaporation section sealing covers are positioned at two ends of the tubular shell; the heat bar is composed of a heat dissipation section provided with a heat dissipation fin, a heat insulation section and an evaporation section in sequence, the outer wall of a shell of the heat dissipation section is provided with a heat dissipation fin, a sealing cover of the heat dissipation section is provided with a central temperature measuring tube, the central temperature measuring tube extends into the heat dissipation section and is fixed by a fixing support, one end of the central temperature measuring tube extending into the heat dissipation section is connected with a millivoltmeter, the millivoltmeter is connected with a signal generator, and the signal generator collects the measured temperature of the gas working medium and sends the temperature to a monitoring terminal; a medium liquid filling port pipe is arranged at the sealing cover of the evaporation section; the tail end of the evaporation section is provided with a pointed end. The low-surface-energy condensation coating is coated on the inner wall of the heat dissipation section of the low-temperature heat rod, so that the condensation efficiency of the working medium is improved. The invention can automatically monitor the working state of the hot rod, reduces the engineering difficulty of hot rod installation, improves the corrosion resistance of the evaporation section and improves the working service life of the hot rod.
Description
Technical Field
The invention belongs to the technical field of frozen soil treatment, relates to a high-efficiency hot bar capable of realizing remote monitoring, and particularly relates to a high-efficiency low-temperature hot bar capable of realizing remote monitoring, which is suitable for preventing frost heaving and thawing sinking of a foundation of a railway, a highway, a bridge, a culvert, an oil and gas transmission pipeline, a house building and a power transmission and transformation iron tower foundation in a frozen soil area, and is used for stabilizing a frozen soil layer, preventing and controlling landslide and the like.
Background
Frozen soil refers to various rocks and soils that are below zero degrees centigrade and contain ice. Because of the rheological properties of frozen earth, which are much lower in long-term strength than in instantaneous strength, the construction of engineering structures in frozen earth areas must be exposed to two major risks: frost heaving and thaw sinking. With the warming of climate, frozen soil layer will be degraded continuously, and the swelling and thawing of frozen soil in frozen soil area will cause the sinking deformation of road bed, landslide collapse due to heat thawing, culvert cracking, etc., which is the main key technical problem to be solved in the railway and highway construction engineering in cold area.
The low-temperature hot rod is used for treating frozen soil, two ends of the low-temperature hot rod are sealed, and liquid working media are filled in the pipe. The upper part of the hot rod is provided with a radiating fin which is called a radiating section; the lower part of the hot rod is buried in permafrost soil, which is called an evaporation section; and a heat insulation section is arranged between the heat dissipation section and the evaporation section, and the outer surface of the heat insulation section is coated with a heat insulation material. In cold seasons, because the air temperature is lower than the temperature of the permafrost, the liquid working medium in the hot rod absorbs the heat in the permafrost, evaporates into gas (absorbs latent heat of vaporization), flows upwards to the heat dissipation section along the central channel of the hot rod, releases latent heat of vaporization when encountering a cooler pipe wall, condenses into liquid, and flows back to the evaporation section along the pipe wall under the action of gravity, so that the heat in the permafrost of the foundation is transmitted to the atmosphere in a circulating manner. In warm seasons, the temperature of the outside air is higher than the temperature of the frozen soil for many years, the steam evaporated by the liquid working medium cannot be condensed after reaching the heat dissipation section, the gas-liquid phase balance is achieved in the hot rod, the liquid stops evaporating, and the hot rod stops working. Due to the one-way heat transfer mechanism of the hot rod, heat can only be transferred from bottom to top but not from top to bottom, so that the heat in the atmosphere can not be transferred to permafrost, thereby keeping 'the permafrost from melting' and ensuring the stability of the frozen soil foundation.
The technology for preventing frost heaving and thawing sinking of frozen soil by using the low-temperature hot bar has been developed for many years at home and abroad, the outside of the heat dissipation section of the hot bar is mostly of a fin structure, the heat dissipation section is exposed in the severe natural environment of a cold area for a long time, and the fins are extremely easy to corrode and wear, so that the heat transfer efficiency, the working stability and the service life of the hot bar are seriously influenced. In addition, the temperature and the working state of the working medium of the hot rod are usually measured by adopting a central temperature measuring tube, personnel are required to go to the site to observe and record each hot rod, and the workload is large and very inconvenient. The installation work amount of the low-temperature hot rod is also huge, the diameter of the hot rod is generally between 50 and 130mm, the depth of the hot rod embedded in a frozen soil layer is not less than 400cm, a deep hole with a size larger than that of the hot rod needs to be drilled in the frozen soil layer in advance for installing the hot rod, the hot rod is placed in the deep hole, sandy soil needs to be refilled, the workload is large, the hot rod is not easy to fill, and even the pipe wall deformation, liquid working medium leakage and the like are caused to influence the working efficiency.
Disclosure of Invention
The invention aims to solve the problems and provides a low-temperature hot rod which is subjected to anti-corrosion treatment at a heat dissipation section, is convenient to monitor the working state and install, ensures the long-term stable working of the hot rod and prolongs the service life of the hot rod.
The purpose of the invention is realized by the following technical scheme:
a high-efficiency heat rod capable of realizing remote monitoring comprises a tubular shell 3, heat dissipation section sealing covers 2 and evaporation section sealing covers 6, wherein liquid working media are filled in the shell; the heat bar is composed of a heat dissipation section provided with a heat dissipation sheet, a heat insulation section and an evaporation section in sequence, a heat dissipation fin 10 is arranged on the outer wall of a shell of the heat dissipation section, a detachable lifting lug 1 is arranged on a sealing cover 2 of the heat dissipation section, a central temperature measuring tube 8 is arranged on the sealing cover 2 of the heat dissipation section, the central temperature measuring tube 8 extends into the heat dissipation section and is fixed by a fixing support 9, one end of the central temperature measuring tube 8 extending into the heat dissipation section is connected with a milliammeter for measuring the temperature of a gas working medium, the millivoltmeter is connected with a signal generator 11, the signal generator 11 is fixed on the inner wall of the shell of the heat bar, the signal generator 11 supplies power through a solar cell, the working state of the heat bar is monitored conveniently, the measured temperature of; the outer surface of the shell of the heat insulation section is coated with heat insulation materials to form a heat insulation layer; the evaporation section is buried in frozen soil, and a medium liquid filling port pipe 7 is arranged at the sealing cover of the evaporation section; the tail end of the evaporation section is provided with a pointed end 4.
Furthermore, the central temperature measuring tube 8 is a metal tube body, the end part of the central temperature measuring tube is of a smooth plane structure, and the central temperature measuring tube 8 is not contacted with the liquid working medium in the tubular shell 3.
Further, the heat dissipation fins 10 are zigzag (longitudinal or transverse) fins, spiral fins or U-shaped fins.
Furthermore, the heat radiating fins, the outer wall of the light pipe of the heat radiating section of the hot rod and the outer wall of the shell of the heat insulating section of the hot rod are galvanized or coated with flexible enamel to form an anti-corrosion wear-resistant coating.
Furthermore, a low-surface-energy condensation coating is coated on the inner wall of the heat dissipation section shell, so that the condensation efficiency is improved.
Further, the fixing support 9 is a metal ring or a stainless steel wire fixed on the inner wall of the housing.
Further, a solar cell panel is installed outside the heat bar.
Furthermore, the outer wall of the evaporation section shell of the hot rod is provided with threads, so that the hot rod is convenient to install.
Furthermore, the outer wall of the shell of the evaporation section of the hot bar is coated with anticorrosive layers such as epoxy zinc-rich paint, chlorinated rubber paint or asphalt paint.
Furthermore, the pointed end 4 is an end with a smooth outer wall or an end with a thread on the outer wall.
The invention has the beneficial effects that:
the liquid working medium in the low-temperature hot rod shell can be replaced, the fin structure is arranged on the outer wall of the shell of the heat dissipation section, the heat transfer coefficient can be improved by 1.1-3 times, the low-surface-energy condensation coating is coated on the inner wall of the heat dissipation section of the low-temperature hot rod, the condensation efficiency of the working medium can be improved by 30% -300%, and the transmission power of the hot rod is increased. The connection of the shell and the radiating fins adopts high-frequency welding or fusion welding, and the surfaces of the shell and the radiating fins are plated with materials such as zinc or flexible enamel, so that the shell has stable service performance, strong corrosion resistance and high wear resistance, and the service life can reach more than 30 years.
The signal generator is used for collecting the medium temperature of each hot rod during working and sending the medium temperature to the monitoring terminal, the working state of the hot rods can be automatically monitored, the tedious work that temperature data are collected when workers go to a field is omitted, the signal generator supplies power by using the solar cell panel, and the solar cell panel is arranged outside the hot rods and is convenient to replace if the solar cell panel is damaged.
The outer wall of the shell of the evaporation section is provided with the threads, and the sealing cover of the evaporation section is provided with the pointed end or the threaded pointed end, so that the engineering difficulty of hot rod installation is greatly reduced; the outer wall of the shell of the evaporation section is coated with anticorrosive coatings such as epoxy zinc-rich paint, chlorinated rubber paint or asphalt paint, and the like, so that the corrosion resistance of the evaporation section and the working service life of the hot rod are improved.
Drawings
Fig. 1 is a schematic structural diagram of a high-efficiency heat rod capable of realizing remote monitoring according to the invention.
In the figure, 1-lifting lug, 2-heat dissipation section sealing cover, 3-tubular shell, 4-pointed end, 5-thread, 6-evaporation section sealing cover, 7-medium liquid filling opening pipe, 8-central temperature measuring pipe, 9-fixed support, 10-heat dissipation fin and 11-signal generator.
Detailed Description
As shown in figure 1, the novel anti-corrosion low-temperature heat rod convenient to install comprises a tubular shell 3, heat dissipation section sealing covers 2 and evaporation section sealing covers 6, wherein the heat dissipation section sealing covers 2 and the evaporation section sealing covers 6 are located at two ends of the shell, and a liquid working medium is filled in the tubular shell 3. The heat rod is composed of a heat dissipation section, a heat insulation section and an evaporation section which are provided with radiating fins in sequence. The top of the outer end of a heat dissipation section sealing cover 2 is provided with a detachable lifting lug 1, the outer wall of a heat dissipation section shell is provided with a heat dissipation fin 10, a central temperature measurement tube 8 is arranged on the heat dissipation section sealing cover 2, the central temperature measurement tube 8 extends into the heat dissipation section and is fixed by a fixing support 9, the central temperature measurement tube 8 is in contact with a gas working medium in a tubular shell 3, one end of the central temperature measurement tube 8 extending into the heat dissipation section is connected with a milliammeter used for measuring the temperature of the gas working medium, the millivoltmeter is connected with a signal generator 11, the signal generator 11 is powered by an external solar cell panel, the signal generator 11 collects the measured temperature of the gas working medium and sends the temperature to a monitoring terminal, and therefore the working state of a heat bar and the starting; the evaporation section sealing cover 6 is provided with a medium liquid filling opening pipe 7, and the tail end of the evaporation section is provided with a smooth or threaded pointed end 4.
The central temperature measuring tube 8 is a metal tube body, and the end part of the central temperature measuring tube is of a smooth plane structure.
The fixed support 9 is a metal ring or a stainless steel wire fixed on the inner wall of the shell.
The inner wall of the tubular shell 3 is of a smooth plane structure or a spiral or straight tooth groove structure.
The heat dissipation fins 10 can be in a structure of a toothed (longitudinal or transverse) fin, a helical fin or a U-shaped fin; the radiating fins 10 are welded with the outer wall of the radiating section of the tubular shell 3 by high-frequency welding or fusion welding, and can be continuous or discontinuous, and the welding rate is more than 95 percent; the heat radiating fins and the light pipe part on the outer wall of the heat radiating section are galvanized or coated with materials such as flexible enamel and the like to form an anti-corrosion wear-resistant coating, so that the coating has a strong anti-corrosion effect and wear resistance. The surface of the inner wall of the shell of the heat dissipation section is coated with a low surface energy condensation coating. In cold seasons, the liquid working medium in the evaporation section absorbs heat of a permafrost layer to evaporate the medium into gas, the gas rises to the heat dissipation section to be cooled, the liquid is condensed into liquid on the inner wall of the heat dissipation section and falls back to the evaporation section, the liquid surface film thickness and the attachment time of the working medium on the inner wall can be reduced by the low-surface-energy condensation coating on the inner wall of the heat dissipation section, the condensation efficiency of the working medium is improved, the heat dissipation is accelerated, and therefore the heat transfer power is improved. In addition, inserts such as a shunt pipe and an overflow pipe can be arranged in the heat dissipation section shell.
The outer surface of the shell of the heat insulation section is coated with heat insulation materials to form a heat insulation layer.
The outer wall of the evaporation section shell is of a smooth surface structure or is provided with mounting threads 5, the length of each mounting thread 5 is determined by the depth of the hot rod embedded into the frozen soil layer until the pointed end 4, and the outer wall of the evaporation section shell is coated with epoxy zinc-rich paint, chlorinated rubber paint or asphalt paint to form an anticorrosive coating. If the installation screw thread 5 is arranged, the hot rod can be screwed into the frozen soil layer along the screw thread spiral direction when the hot rod is installed. The evaporation section is provided with a threaded structure, and the threaded structure is combined with the smooth or threaded pointed end 4, so that the difficulty in installation of the hot rod is reduced, the damage to the pipe wall of the hot rod caused by vigorous pulling and inserting is avoided, the risk of leakage of a liquid medium is reduced, the void ratio of filling sand through holes is reduced, and the power of the hot rod is improved.
The liquid working medium in the tubular housing 3 is liquid ammonia (NH)3) Carbon dioxide or freon-21 (CHC)12F) Freon-11 (CC)13F) And the like. The medium liquid filling port pipe 7 is simultaneously a vacuum exhaust port, a liquid filling port and a liquid replacement exhaust port in the hot rod.
The materials of all parts of the invention can adopt carbon steel, low-temperature steel, stainless steel and acid and alkali salt resistant materials; the thickness of the radiating fins 10 is 0.3-3mm, the height is 1-100mm, the diameter of the tubular shell 3 is 10-200mm, and the length is 1-100 m.
Claims (9)
1. A high-efficiency heat rod capable of realizing remote monitoring comprises a tubular shell, heat dissipation section sealing covers and evaporation section sealing covers, wherein the heat dissipation section sealing covers and the evaporation section sealing covers are positioned at two ends, and a liquid working medium is filled in the shell; the heat bar is composed of a heat dissipation section provided with a heat dissipation fin, a heat insulation section and an evaporation section in sequence, the outer wall of a shell of the heat dissipation section is provided with a heat dissipation fin, a detachable lifting lug is arranged on a sealing cover of the heat dissipation section, and a central temperature measuring tube is arranged on the sealing cover of the heat dissipation section; the outer surface of the shell of the heat insulation section is coated with heat insulation materials to form a heat insulation layer; a medium liquid filling port pipe is arranged at the sealing cover of the evaporation section; the tail end of the evaporation section is provided with a pointed end.
2. The heat rod as claimed in claim 1, wherein the heat dissipating fins are a zigzag fin, a spiral fin or a U-shaped fin.
3. The heat rod of claim 1, wherein the heat radiating fins, the light pipe on the outer wall of the heat radiating section of the heat rod and the outer wall of the shell of the heat insulating section of the heat rod are provided with an anti-corrosion wear-resistant coating.
4. The hot rod according to claim 3, characterized in that the anti-corrosion wear resistant coating is a zinc coating or a flexible enamel coating.
5. A heat rod according to claim 1, characterized in that the inner wall of the casing of the heat dissipating section is coated with a low surface energy coating.
6. The heat rod of claim 1, wherein the outer wall of the shell of the evaporation section of the heat rod is provided with threads.
7. The heat rod of claim 1, wherein the outer wall of the shell of the evaporation section of the heat rod is coated with an anticorrosive layer.
8. The hot rod as claimed in claim 7, wherein the material of the corrosion-resistant layer is epoxy zinc-rich paint, chlorinated rubber paint or asphalt paint.
9. The heat rod of claim 1, wherein said tip is a smooth-walled tip or a threaded-walled tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264289.7A CN111074874A (en) | 2019-12-11 | 2019-12-11 | Can realize remote monitoring's high-efficient hot stick |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264289.7A CN111074874A (en) | 2019-12-11 | 2019-12-11 | Can realize remote monitoring's high-efficient hot stick |
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| Publication Number | Publication Date |
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| CN111074874A true CN111074874A (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911264289.7A Pending CN111074874A (en) | 2019-12-11 | 2019-12-11 | Can realize remote monitoring's high-efficient hot stick |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030650A (en) * | 2020-09-01 | 2020-12-04 | 中国科学院西北生态环境资源研究院 | Heat pipe body, heat pipe roadbed system of yin-yang slope roadbed and construction method thereof |
| CN113790621A (en) * | 2021-09-04 | 2021-12-14 | 山东高德传导设备有限公司 | Novel combined heat pipe device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623748Y (en) * | 2003-05-15 | 2004-07-07 | 江苏中圣石化工程有限公司 | Low temperature heat rod with central temperature measurement tube |
| CN2837386Y (en) * | 2004-12-08 | 2006-11-15 | 大连熵立得传热技术有限公司 | Split steel pipe pile hot rod for maintaining stability of frozen earth |
| CN2839944Y (en) * | 2005-12-16 | 2006-11-22 | 娄晓洲 | Environment protection high-speed low-temperature heat bar device |
| CN101672590A (en) * | 2009-08-26 | 2010-03-17 | 江苏中圣高科技产业有限公司 | Shell-and-tube combined heat pipe exchanger |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN102384682A (en) * | 2011-08-09 | 2012-03-21 | 江苏中圣高科技产业有限公司 | Internal-circulation special high-efficiency heat exchanger |
| CN207427503U (en) * | 2017-09-30 | 2018-05-29 | 深圳喆能电子技术有限公司 | A kind of intelligent electromagnetic heating rod |
-
2019
- 2019-12-11 CN CN201911264289.7A patent/CN111074874A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2623748Y (en) * | 2003-05-15 | 2004-07-07 | 江苏中圣石化工程有限公司 | Low temperature heat rod with central temperature measurement tube |
| CN2837386Y (en) * | 2004-12-08 | 2006-11-15 | 大连熵立得传热技术有限公司 | Split steel pipe pile hot rod for maintaining stability of frozen earth |
| CN2839944Y (en) * | 2005-12-16 | 2006-11-22 | 娄晓洲 | Environment protection high-speed low-temperature heat bar device |
| CN101672590A (en) * | 2009-08-26 | 2010-03-17 | 江苏中圣高科技产业有限公司 | Shell-and-tube combined heat pipe exchanger |
| CN101871738A (en) * | 2010-06-22 | 2010-10-27 | 江苏中圣高科技产业有限公司 | Thermal-load adjustable high-efficiency heat exchanger |
| CN102384682A (en) * | 2011-08-09 | 2012-03-21 | 江苏中圣高科技产业有限公司 | Internal-circulation special high-efficiency heat exchanger |
| CN207427503U (en) * | 2017-09-30 | 2018-05-29 | 深圳喆能电子技术有限公司 | A kind of intelligent electromagnetic heating rod |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030650A (en) * | 2020-09-01 | 2020-12-04 | 中国科学院西北生态环境资源研究院 | Heat pipe body, heat pipe roadbed system of yin-yang slope roadbed and construction method thereof |
| CN112030650B (en) * | 2020-09-01 | 2021-09-24 | 中国科学院西北生态环境资源研究院 | Heat pipe body, heat pipe roadbed system of yin-yang slope roadbed and construction method thereof |
| CN113790621A (en) * | 2021-09-04 | 2021-12-14 | 山东高德传导设备有限公司 | Novel combined heat pipe device |
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Application publication date: 20200428 |
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