CN113588043B - A radar automatic detection device and system for the liquid level height of a molten iron tank - Google Patents
A radar automatic detection device and system for the liquid level height of a molten iron tank Download PDFInfo
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- CN113588043B CN113588043B CN202111050720.5A CN202111050720A CN113588043B CN 113588043 B CN113588043 B CN 113588043B CN 202111050720 A CN202111050720 A CN 202111050720A CN 113588043 B CN113588043 B CN 113588043B
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- radar
- liquid level
- radome
- detection device
- hot
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- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 34
- 229910052742 iron Inorganic materials 0.000 title abstract description 17
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 29
- 229910052751 metal Inorganic materials 0.000 claims description 29
- 238000009423 ventilation Methods 0.000 claims description 20
- 239000011521 glass Substances 0.000 claims description 15
- 238000010926 purge Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000011179 visual inspection Methods 0.000 abstract description 2
- 230000032258 transport Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 16
- 239000000428 dust Substances 0.000 description 12
- 238000001816 cooling Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007511 glassblowing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
本发明公开了一种铁水罐液位高度雷达自动检测装置，包括由外层壁和内层壁构成的雷达罩，所述外层壁和内层壁之间设置有空腔夹层，所述内层壁围合形成内腔，所述内腔中设置有雷达料位计；所述雷达罩的外侧设置有进气管，所述进气管的出气端与所述空腔夹层以及所述内腔连通。本发明提供的铁水罐液位高度雷达自动检测装置，采用雷达料位计来测量铁水罐内铁水液位高度，相比人工目测，雷达料位计测量液位高度既安全又准确；双层中空结构的雷达罩结构，通过进气管输送高压冷空气，分别对雷达罩的内腔和空腔夹层同时进行连续的吹气冷却，有效的降低雷达周围的工作温度，延长了雷达料位计的使用寿命。
The present invention discloses a radar automatic detection device for the liquid level height of a molten iron tank, comprising a radome composed of an outer wall and an inner wall, a cavity interlayer is arranged between the outer wall and the inner wall, the inner wall encloses an inner cavity, a radar level meter is arranged in the inner cavity; an air inlet pipe is arranged on the outer side of the radome, and the air outlet end of the air inlet pipe is connected with the cavity interlayer and the inner cavity. The radar automatic detection device for the liquid level height of a molten iron tank provided by the present invention adopts a radar level meter to measure the liquid level height of the molten iron in the molten iron tank. Compared with manual visual inspection, the radar level meter is safe and accurate in measuring the liquid level height; the radome structure with a double-layer hollow structure transports high-pressure cold air through the air inlet pipe, and simultaneously and continuously blows and cools the inner cavity and the cavity interlayer of the radome, effectively reducing the working temperature around the radar and extending the service life of the radar level meter.
Description
Technical Field
The invention relates to the technical field of steel smelting, in particular to an automatic detection device for a liquid level height radar of a hot metal ladle.
Background
In the iron making process, molten iron in a molten state (the temperature is higher than 1500 ℃) needs to be guided into a hot metal ladle from a blast furnace and transported to a subsequent working procedure station by the hot metal ladle. For whether or not molten iron is filled in a hot metal ladle, when it is filled, the conventional process is to manually observe from above the hot metal ladle by naked eyes.
The prior art uses a radar to detect the liquid level of molten iron from the upper part of the molten iron tank by transmitting radar waves to the molten iron tank, and feeds back the liquid level information to corresponding command control personnel. Due to the severe working condition environment, the high temperature and the high dust, the temperature of molten iron is up to more than 1500 ℃, the temperature of surrounding air is generally up to more than 80 ℃, in addition, due to the existence of slag, high dust quantity exists around, and the severe working condition causes that the service life and the stability of the current liquid-measuring radar are influenced.
Disclosure of Invention
Based on the problems, the invention aims to provide an automatic radar detection device for the liquid level height of a hot-metal ladle, which mainly uses a radar to replace manual naked eye observation, optimizes the specific structure of a radome, reduces the temperature and dust of the working environment around the radar through heat insulation and cooling measures, and improves the service life and stability of the radar.
The invention adopts the following technical scheme:
The invention provides an automatic radar detection device for the liquid level height of a hot-metal ladle, which comprises a radar cover formed by an outer wall and an inner wall, wherein a cavity interlayer is arranged between the outer wall and the inner wall, the inner wall is enclosed to form an inner cavity, and a radar level gauge is arranged in the inner cavity;
the outside of radome is provided with the intake pipe, the end of giving vent to anger of intake pipe with cavity intermediate layer and the inner chamber intercommunication.
Further, the radar level gauge comprises a radar body and a mounting flange;
the antenna end at the lower part of the radar body penetrates through the reserved opening at the bottom of the radome and then extends into the lower shield, a gap for ventilation and air guide is reserved between the radar body and the outer edge of the reserved opening, and the lower shield is fixed on the bottom surface of the radome;
The installation flange is fixed at the bottom of the inner cavity, a plurality of first ventilation holes are formed in the installation flange, a plurality of second ventilation holes are formed in the area, corresponding to the installation flange, of the inner layer wall, and the second ventilation holes are communicated with the first ventilation holes in a one-to-one correspondence mode.
Further, the bottom of the lower shield is provided with heat-insulating glass.
Further, a plurality of air outlet holes are formed in the side wall of the lower shield.
Further, a gas purging pipe is arranged below the heat insulation glass in an inclined mode.
Further, the gas purging pipe and the gas inlet pipe are communicated with the gas supply main pipe.
Further, the radome is of a concave structure, and a top cover is arranged at the top opening of the radome.
Furthermore, both sides of the upper part of the radar cover are fixed on the bottom surface of the second floor slab through connecting seats.
Further, the connecting seat is angle steel, and an adjusting hole for adjusting the installation position of the radome is formed in the connecting seat.
The invention also provides an automatic detection system for the liquid level height radar of the hot-metal ladle, which comprises the automatic detection device for the liquid level height radar of the hot-metal ladle.
Compared with the prior art, the invention has the beneficial technical effects that:
The radar automatic detection device for the liquid level of the hot-metal ladle, provided by the invention, adopts the radar level gauge to measure the liquid level of molten iron in the hot-metal ladle, is safe and accurate compared with manual visual inspection, adopts a radar level gauge to measure the liquid level, adopts a radar cover structure with a double-layer hollow structure to convey high-pressure cold air through an air inlet pipe, respectively carries out continuous blowing cooling on an inner cavity and a cavity interlayer of the radar cover, effectively reduces the working temperature around a radar, prolongs the service life of the radar level gauge, adopts a lower shield at the bottom of the radar cover to protect an antenna structure at the bottom of the radar, adopts cold air in the inner cavity and the cavity interlayer to flow into the lower shield to cool the antenna structure at the bottom of the radar, adopts a heat insulation glass at the bottom of the lower shield to effectively isolate high-temperature gas and dust generated by molten iron, and adopts a gas purging pipe at the bottom to blow off and cool dust attached to the lower surface of the heat insulation glass, so that the radar always stays at a reasonable working temperature and under the visibility.
Drawings
The invention is further described with reference to the following description of the drawings.
FIG. 1 is a schematic diagram of an automatic radar detection device for the liquid level of a hot metal ladle in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of the gas communication between the inner chamber, the cavity interlayer and the lower shield according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating the installation of a radar cover according to a first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a connecting seat according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an automatic radar detection system for the level height of a hot metal ladle according to a second embodiment of the present invention.
The reference numerals comprise 1, a radome, 101, an outer wall, 102, an inner wall, 2, a cavity interlayer, 3, an inner cavity, 4, a radar level gauge, 401, a radar body, 402, a mounting flange, 5, an air inlet pipe, 6, a reserved opening, 7, a lower shield, 8, a gap, 9, a first ventilation hole, 10, a second ventilation hole, 11, heat insulation glass, 12, an air outlet hole, 13, a gas purging pipe, 14, an air supply main pipe, 15, a top cover, 16, a connecting seat, 1601, an adjusting hole, 18, a hot metal bottle, 19 and the ground.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
Example 1
As shown in fig. 1 and 2, the embodiment discloses an automatic radar detection device for the liquid level height of a hot-metal ladle, which comprises a radar cover 1, wherein an inner cavity 3 is arranged in the radar cover 1, and a radar level gauge 4 is arranged in the inner cavity 3. The radome 1 is composed of an outer layer wall 101 and an inner layer wall 102, and a cavity interlayer 2 is arranged between the outer layer wall 101 and the inner layer wall 102. An air inlet pipe 5 is arranged on the outer side of the radome 1, and the air outlet end of the air inlet pipe 5 is communicated with the cavity interlayer 2 and the inner cavity 3.
The structure has the greatest characteristics that a radar cover structure with a double-layer hollow structure is used, high-pressure cold air is conveyed through the air inlet pipe 5, continuous blowing cooling is respectively carried out on the inner cavity 3 and the cavity interlayer 2 of the radar cover, the working temperature around the radar is reduced, and meanwhile, dust adhesion on the radar can be prevented by the radar cover 1.
In this embodiment, radome 1 is the concave shape structure, and top cap 15 is installed through the bolt to the top opening part of radome 1, can overhaul the radar charge level indicator 4 in inner chamber 3 through dismantling top cap 15 and maintain.
The radar level gauge 4 structure of the prior art generally comprises a radar body 401 and a mounting flange 402. The lower part of the radar body 401 is an antenna structure, and in this embodiment, an antenna end of the lower part of the radar body 401 extends to the outside of the radome 1. Specifically, the bottom of the radome 1 is provided with a reserved opening 6, and the antenna end at the lower part of the radar body 401 extends to the outer side of the radome 1 after penetrating through the reserved opening 6.
In order to protect the antenna structure at the lower part of the radar body 401, a lower shield 7 is provided around the radar antenna structure, and the lower shield 7 is welded to the bottom surface of the outer wall 101 of the radome 1.
It should be noted that, because the radome 1 is of a double-wall structure, when the reserved opening 6 is opened, the reserved opening 6 needs to be simultaneously opened on the outer wall 101 and the inner wall 102, so that the antenna end at the lower part of the radar body 401 can penetrate to the outer side of the radome 1 through the reserved opening 6.
In order to introduce the cold air in the cavity interlayer 2 into the lower shield 7, a gap 8 for ventilation and air guide is reserved between the radar body 401 and the outer edge of the reserved opening 6, and the cold air in the cavity interlayer 2 enters into the lower shield 7 through the gap 8 to cool the antenna structure at the lower part of the radar.
The mounting flange 402 is fixed to the bottom of the inner cavity 3, in particular to the inner wall 102 of the radome 1 by means of bolts. In order to be able to circulate the high-pressure cooling air in the interior 3, the high-pressure cooling air in the interior 3 needs to be conducted out of the radome 1. As a possible implementation manner, in this embodiment, the mounting flange 402 is provided with a plurality of first ventilation holes 9, and the area of the inner wall 102 corresponding to the mounting flange 402 is provided with a plurality of second ventilation holes 10, where the second ventilation holes 10 are in communication with the first ventilation holes 9 in a one-to-one correspondence.
The high-pressure cold air in the inner cavity 3 enters the cavity interlayer 2 through the first ventilation holes 9 and the second ventilation holes 10, is converged with the high-pressure air in the cavity interlayer 2, finally enters the lower shield 7 through the gap 8, and the first ventilation holes 9 are distributed around the radar body 401, so that heat around the radar body 401 can be effectively carried.
The lower shield 7 has a lower opening structure, and a heat insulating glass 11 is provided at the bottom of the lower shield 7 to prevent dust and high temperature from affecting the operation of the radar antenna. The insulating glass 11 is fixed in the central circular hole of the flange ring, and the flange ring is fixed on the lower shield 7 through bolts.
The arrangement of the heat insulating glass 11 can effectively prevent dust and protect the radar antenna, but also influences the discharge of high-pressure gas in the lower shield 7, and in order to enable the outside of the discharge of the high-pressure gas in the lower shield 7, a plurality of air outlet holes 12 are formed in the side wall of the lower shield 7.
After the insulating glass 11 is used for a long time, a large amount of dust is adhered to the lower surface of the insulating glass 11, and in order to remove the dust on the lower surface of the insulating glass 11, a gas purging pipe 13 is arranged obliquely below the insulating glass 11, and the high-pressure gas blows off and cools the dust adhered to the lower surface of the insulating glass 11 after passing through the gas purging pipe 13.
In this embodiment, the gas purge pipe 13 and the gas inlet pipe 5 are both in communication with the gas supply manifold 14.
As shown in fig. 3, the radome 1 of the present invention is inversely installed under the second floor 17, specifically, the upper two sides of the radome 1 are provided with connecting seats 16, and the radome 1 is fixed on the bottom surface of the second floor 17 through the connecting seats 16
The radar cover 1 is just over the hot metal ladle 18, so that the molten iron liquid level can be effectively monitored in real time. The structure is inversely arranged below the floor slab, so that the operation and walking of second-floor staff are not affected completely, holes are not formed in the floor slab, the construction difficulty is reduced, the damage to the floor slab is reduced, and more importantly, the influence of molten iron heat radiation on the second floor can be effectively reduced.
In this embodiment, as shown in fig. 4, the connecting base 16 is angle steel, and an adjusting hole 1601 for adjusting the installation position of the radome 1 is provided on the connecting base 16. The adjusting hole 1601 on the horizontal portion of the angle steel is perpendicular to the length direction for adjusting the distance between the two connection seats 16 and the left and right mounting positions. The adjusting hole 1601 on the vertical portion of the angle steel is parallel to the length direction and is used for adjusting the front and rear mounting positions of the radome 1
Example two
On the basis of the automatic detection device for the liquid level height radar of the hot-metal ladle in the first embodiment, the embodiment provides an automatic detection system for the liquid level height radar of the hot-metal ladle, which comprises the automatic detection device for the liquid level height radar of the hot-metal ladle in the first embodiment.
As shown in FIG. 5, the system also comprises an industrial personal computer, a network switch, a plc controller, a display large screen, an alarm closing button, an air source switch button and an electromagnetic valve.
The industrial personal computer is electrically connected with the network switch, the network switch can be connected with a plurality of plc controllers, each plc controller can be electrically connected with a plurality of alarms, an AI module of each plc controller is electrically connected with a plurality of radar level indicators 4, the radar level indicators 4 output signals to the controllers (plc controllers and industrial personal computers), and the signals are controlled to be converted into four effective digits representing the liquid level height through A/D conversion and are displayed on a display screen. The radar level gauge 4 monitors the liquid level height in the hot-metal bottle at any time, and when the liquid level height exceeds a set value, an alarm corresponding to the radar level gauge 4 gives an alarm, and a control person controls to stop pouring molten iron into the hot-metal bottle.
The electromagnetic valve is arranged on the air source passage, in particular to the air supply main pipe 14, and is electrically connected with the air source switch button, and the air source switch button controls the connection or disconnection of the air source passage by controlling the on-off of the electromagnetic valve. The air supply pipe carries out continuous air blowing and cooling to the inner cavity of the radome and the hollow interlayer cavity respectively, so that the working temperature around the radar is reduced, and as the inner cavity of the radome is in an inflated positive pressure state and a certain air blowing flow is always maintained, the temperature is reduced, dust is also reduced, and the radar can be always at a reasonable working temperature and under the visibility by matching with the bottom glass blowing opening.
The system not only can accurately measure the liquid level of the hot-metal ladle, but also can conveniently and timely inform operators, and can provide functions of liquid level alarm and on-site closing of cooling gas
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. The automatic radar detection device for the liquid level height of the hot-metal ladle is characterized by comprising a radar cover (1) formed by an outer layer wall (101) and an inner layer wall (102), wherein a cavity interlayer (2) is arranged between the outer layer wall (101) and the inner layer wall (102), an inner cavity (3) is formed by enclosing the inner layer wall (102), and a radar level gauge (4) is arranged in the inner cavity (3);
An air inlet pipe (5) is arranged on the outer side of the radome (1), and the air outlet end of the air inlet pipe (5) is communicated with the cavity interlayer (2) and the inner cavity (3);
the radar level gauge (4) comprises a radar body (401) and a mounting flange (402);
the antenna end at the lower part of the radar body (401) penetrates through the reserved opening (6) at the bottom of the radome (1) and then extends into the lower shield (7), a gap (8) for ventilation and air guide is reserved between the radar body (401) and the outer edge of the reserved opening (6), and the lower shield (7) is fixed on the bottom surface of the radome (1);
The mounting flange (402) is fixed at the bottom of the inner cavity (3), a plurality of first ventilation holes (9) are formed in the mounting flange (402), a plurality of second ventilation holes (10) are formed in the region, corresponding to the mounting flange (402), of the inner layer wall (102), and the second ventilation holes (10) are correspondingly communicated with the first ventilation holes (9) one by one;
The bottom of the lower shield (7) is provided with heat insulation glass (11);
a plurality of air outlet holes (12) are formed in the side wall of the lower shield (7);
a gas purging pipe (13) is arranged below the heat insulation glass (11);
The gas purging pipe (13) and the gas inlet pipe (5) are communicated with the gas supply main pipe (14).
2. The automatic radar detection device for the liquid level of the hot-metal ladle is characterized in that the radar cover (1) is of a concave structure, and a top cover (15) is arranged at the top opening of the radar cover (1).
3. The automatic radar detection device for the liquid level of the hot-metal bottle according to claim 1, wherein two sides of the upper part of the radome (1) are fixed on the bottom surface of a second floor slab (17) through connecting seats (16).
4. The automatic radar detection device for the liquid level of the hot-metal ladle is characterized in that the connecting seat (16) is angle steel, and an adjusting hole (1601) for adjusting the installation position of the radome (1) is formed in the connecting seat (16).
5. A radar automatic detection system for the liquid level of a hot metal ladle, which is characterized by comprising the radar automatic detection device for the liquid level of the hot metal ladle, as set forth in any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111050720.5A CN113588043B (en) | 2021-09-08 | 2021-09-08 | A radar automatic detection device and system for the liquid level height of a molten iron tank |
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| CN202111050720.5A CN113588043B (en) | 2021-09-08 | 2021-09-08 | A radar automatic detection device and system for the liquid level height of a molten iron tank |
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| CN113588043B true CN113588043B (en) | 2025-03-14 |
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| CN215677210U (en) * | 2021-09-08 | 2022-01-28 | 攀枝花市星联科技有限公司 | Hot metal bottle liquid level height radar automatic checkout device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4975803A (en) * | 1988-12-07 | 1990-12-04 | Sundstrand Corporation | Cold plane system for cooling electronic circuit components |
| US7541969B2 (en) * | 2007-05-31 | 2009-06-02 | Rosemount Tank Radar Ab | Radar level gauging system for use at sea |
| CN101640311B (en) * | 2009-07-31 | 2012-10-17 | 北京科技大学 | A Radar Antenna Cooling Anti-adhesion Device for High Temperature Dust Measurement |
| KR101511016B1 (en) * | 2013-09-30 | 2015-04-13 | 주식회사 우진 | apparatus for measuring level of molten iron |
| US20180106886A1 (en) * | 2016-10-14 | 2018-04-19 | Finetek Co., Ltd. | Radar level transmitter with dust removing structures |
| CN208505421U (en) * | 2018-07-09 | 2019-02-15 | 陕钢集团汉中钢铁有限责任公司 | A kind of radar level gauge with automatic blowing refrigerating function |
| CN109277324B (en) * | 2018-11-14 | 2025-02-14 | 江苏省南扬机械制造有限公司 | An automatic feeding welding pipe internal welding rib cleaning system |
| CN110361072B (en) * | 2019-06-28 | 2021-02-26 | 江苏维航精仪科技有限公司 | Radar level meter antenna with cooling sweeps structure |
| CN111561980B (en) * | 2020-05-18 | 2022-10-28 | 攀枝花市星联科技有限公司 | Method and device for identification of metal liquid level echo signal and liquid level monitoring |
| CN213021825U (en) * | 2020-10-28 | 2021-04-20 | 天津中天鑫宇科技有限公司 | Radar level meter dust keeper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215677210U (en) * | 2021-09-08 | 2022-01-28 | 攀枝花市星联科技有限公司 | Hot metal bottle liquid level height radar automatic checkout device and system |
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