CN112521984A - Adopt whirl board vapour and liquid separator's coal gas clean system - Google Patents
Adopt whirl board vapour and liquid separator's coal gas clean system Download PDFInfo
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- CN112521984A CN112521984A CN202011038957.7A CN202011038957A CN112521984A CN 112521984 A CN112521984 A CN 112521984A CN 202011038957 A CN202011038957 A CN 202011038957A CN 112521984 A CN112521984 A CN 112521984A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
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Abstract
The invention discloses a gas purification system adopting a cyclone plate gas-liquid separator, which comprises a cylinder body, a lower end conduit, a cyclone plate, a cyclone separation chamber and an exhaust port, wherein the cyclone separation chamber is arranged at the central position of the top of the cylinder body, the cyclone plate is arranged at the central position of the bottom end of the cyclone separation chamber, the lower end conduit is arranged at one end, away from the cyclone separation chamber, of the cyclone plate, a downcomer is fixed at the bottom end of the cyclone separation chamber at one side of the lower end conduit, the exhaust port is arranged at the central position of the top end of the cylinder body, the bottom end of the exhaust port extends into the cylinder body and is communicated with the top end of the cyclone separation chamber, an air receiving port is arranged on the outer wall at one side of the cylinder body, one end of the air receiving port extends. The invention not only reduces the leakage phenomenon generated when the purification system injects gas, improves the convenience when the purification system is used, but also ensures the integrity of the cylinder when the purification system is used.
Description
Technical Field
The invention relates to the technical field of gas purification, in particular to a gas purification system adopting a cyclone plate gas-liquid separator.
Background
The coal gas is a gas fuel composed of various combustible components, has various types and complex components, can be generally divided into natural coal gas and artificial coal gas, can generate partial waste gas in the using process, can cause serious pollution to the environment when being diffused into the air, has serious potential safety hazard, and needs to be purified, so a corresponding coal gas purification system is needed.
At present, gas purification systems on the market are various, but the functionality is single, and certain problems still exist, and the requirements of people can not be met gradually, and the specific problems are as follows:
(1) the existing purification system is inconvenient for sealing the connecting position of the gas port and the gas injection pipe, so that the phenomenon of gas leakage is easy to generate, and people are often troubled;
(2) the existing purification system is inconvenient for automatically discharging and treating ammonium sulfate mother liquor, so that the ammonium sulfate mother liquor is inconvenient to recover and needs to be improved;
(3) the existing purification system is inconvenient for protecting the bottom of the cylinder body, so that the phenomenon of abrasion caused by friction easily occurs when the purification system is in contact with the ground, and the integrity of the cylinder body is further influenced.
Disclosure of Invention
The invention aims to provide a gas purification system adopting a cyclone plate gas-liquid separator, which solves the problems that the purification system in the background art is inconvenient to seal the connecting position of a gas port and a gas injection pipe, is inconvenient to automatically discharge ammonium sulfate mother liquor and is inconvenient to protect the bottom of a cylinder.
In order to achieve the purpose, the invention provides the following technical scheme: a gas purification system adopting a rotational flow plate gas-liquid separator comprises a barrel, a lower end guide pipe, a rotational flow plate, a rotational flow separation chamber and an exhaust port, wherein the rotational flow separation chamber is installed at the central position of the top of the barrel, the rotational flow plate is arranged at the central position of the bottom end of the rotational flow separation chamber, the lower end guide pipe is arranged at one end, away from the rotational flow separation chamber, of the rotational flow plate, a downcomer is fixed at the bottom end of the rotational flow separation chamber on one side of the lower end guide pipe, the exhaust port is arranged at the central position of the top end of the barrel, the bottom end of the exhaust port extends into the barrel and is communicated with the top end of the rotational flow separation chamber, an air receiving port is arranged on the outer wall on one side of the barrel, one end of the air receiving port extends into the barrel, an air injection pipe is installed at one end, away from the barrel, of, and a discharge mechanism is arranged on the outer wall of the cylinder body below the control panel.
Preferably, the edge position department of barrel bottom is equipped with the annular frame, and the rubber tie plate is installed to the below of annular frame to protect the bottom of barrel.
Preferably, a spiral connector is fixed at the center of the bottom end of the cylinder, a spiral column is connected to the inner thread of the spiral connector, and the bottom end of the spiral column extends to the outside of the spiral connector and is fixedly connected with the top end of the rubber cushion plate, so that the rubber cushion plate is mounted below the annular frame.
Preferably, the inside of pipe strap structure is equipped with locking bolt, first splint, snap ring, lock nut and second splint in proper order, connect the gas port to install two sets of snap rings with the contact position department of gas injection pipe, and be fixed with first splint and second splint on the outer wall of snap ring both sides respectively to the hookup location department of gas port and gas injection pipe carries out sealed processing.
Preferably, the outer wall that first splint one side was kept away from to the second splint is equipped with lock nut, and installs lock bolt on the outer wall that second splint one side was kept away from to first splint, and lock bolt's one end run through first splint and second splint in proper order and with lock nut threaded connection to install the snap ring in the hookup location department of gas port and gas injection pipe.
Preferably, the inside of emission mechanism is equipped with cavity cylinder, overflow hole, distance sensor, solenoid valve, leakage fluid dram and kicking block in proper order, one side of barrel bottom is equipped with the cavity cylinder, and the inside bottom of cavity cylinder is equipped with the kicking block to the cavity cylinder of kicking block top is inside to have distance sensor through the support mounting, is equipped with the overflow hole on the cavity cylinder inner wall of distance sensor below, and the one end in overflow hole extends to the outside of cavity cylinder, so that monitor the liquid level of barrel bottom thiamine mother liquor and handle.
Preferably, a liquid outlet is arranged on the inner wall of the barrel body on one side of the hollow barrel body, one end of the liquid outlet extends to the outside of the barrel body, and an electromagnetic valve is arranged on the outer wall on one side of the liquid outlet so as to discharge and treat the ammonium sulfate mother liquor.
Compared with the prior art, the invention has the beneficial effects that: the gas purification system adopting the cyclone plate gas-liquid separator not only reduces the leakage phenomenon generated during gas injection of the purification system, improves the convenience of the purification system during use, but also ensures the integrity of the cylinder body during use of the purification system;
(1) the locking bolt, the first clamping plate, the clamping ring, the locking nut and the second clamping plate are arranged, the locking bolt is rotated to sequentially penetrate through the first clamping plate and the second clamping plate and be screwed into the locking nut, and the clamping ring is arranged at the connecting position of the gas receiving port and the gas injection pipe to be sealed, so that the leakage phenomenon generated during gas injection of the purification system is reduced;
(2) through the arrangement of the hollow cylinder, the overflow hole, the distance sensor, the electromagnetic valve, the liquid discharge port and the floating block, through the overflow effect of the downcomer, fog drops in the cyclone separation chamber fall into the bottom of the cylinder through the downcomer to form ammonium sulfate mother liquor, when the liquid level of the ammonium sulfate mother liquor reaches the position of the overflow hole, the ammonium sulfate mother liquor flows into the hollow cylinder through the overflow hole, at the moment, the floating block can float upwards in the hollow cylinder to change the distance between the floating block and the distance sensor, at the moment, the distance sensor can transmit a signal to the control panel, the control panel can control the electromagnetic valve to be opened to open and close the liquid discharge port, so that the ammonium sulfate mother liquor at the bottom of the cylinder is discharged through the liquid discharge port, meanwhile, because the outer wall of one side of the bottom of the hollow cylinder is provided with the corresponding through hole, the ammonium sulfate mother liquor in the hollow cylinder can be discharged in time, the function of automatically discharging the ammonium sulfate mother liquor by the purification system is realized, so that the convenience of the purification system in use is improved;
(3) through being provided with rubber backing plate, annular frame, spiral connector and spiral post, through with spiral post screw in to spiral connector's inside, carry out spacing back through annular frame to the amplitude of rise of rubber backing plate for the rubber backing plate is installed in the bottom of annular frame, carries out direct contact with ground in order to avoid the bottom of barrel, and then can reduce the bottom of barrel and produce the phenomenon of wearing and tearing because of the friction, thereby has ensured the integrality of barrel when clean system uses.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged structural view of the pipe clamp structure of the present invention;
FIG. 3 is a top enlarged view of the second clamping plate according to the present invention;
FIG. 4 is a schematic view of the discharge mechanism of the present invention in enlarged cross-sectional configuration;
FIG. 5 is a schematic cross-sectional view of a screw interface according to the present invention.
In the figure: 1. a barrel; 2. a downcomer; 3. a lower end conduit; 4. a swirl plate; 5. a cyclonic separation chamber; 6. an exhaust port; 7. an air receiving port; 8. a pipe clamp structure; 801. locking the bolt; 802. a first splint; 803. a snap ring; 804. locking the nut; 805. a second splint; 9. a gas injection pipe; 10. a control panel; 11. a discharge mechanism; 1101. a hollow cylinder; 1102. an overflow aperture; 1103. a distance sensor; 1104. an electromagnetic valve; 1105. a liquid discharge port; 1106. floating blocks; 12. a rubber pad; 13. an annular frame; 14. a screw interface; 15. a spiral column.
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.
Referring to fig. 1-5, an embodiment of the present invention is shown: a coal gas purification system adopting a cyclone plate gas-liquid separator comprises a cylinder body 1, a lower end conduit 3, a cyclone plate 4, a cyclone separation chamber 5 and an exhaust port 6, wherein the cyclone separation chamber 5 is installed at the central position of the top of the cylinder body 1, the cyclone plate 4 is arranged at the central position of the bottom end of the cyclone separation chamber 5, an annular frame 13 is arranged at the edge position of the bottom end of the cylinder body 1, and a rubber base plate 12 is installed below the annular frame 13 so as to protect the bottom of the cylinder body 1;
a spiral connector 14 is fixed at the center of the bottom end of the cylinder body 1, a spiral column 15 is connected to the inner thread of the spiral connector 14, the bottom end of the spiral column 15 extends to the outer part of the spiral connector 14 and is fixedly connected with the top end of the rubber cushion plate 12, so that the rubber cushion plate 12 is installed below the annular frame 13;
a lower end guide pipe 3 is arranged at one end of the rotational flow plate 4 far away from the rotational flow separation chamber 5, a down-flow pipe 2 is fixed at the bottom end of the rotational flow separation chamber 5 at one side of the lower end guide pipe 3, an exhaust port 6 is arranged at the central position of the top end of the cylinder body 1, the bottom end of the exhaust port 6 extends into the cylinder body 1 and is communicated with the top end of the rotational flow separation chamber 5, an air receiving port 7 is arranged on the outer wall at one side of the cylinder body 1, one end of the air receiving port 7 extends into the cylinder body 1, an air injection pipe 9 is arranged at one end of the air receiving port 7 far away from the cylinder body 1, a pipe clamp structure 8 is arranged at the contact position of the air injection pipe 9 and the air receiving port 7, a locking bolt 801, a first clamping plate 802, a clamping ring 803, a locking nut 804 and a second clamping plate 805 are sequentially arranged in the pipe clamp structure 8, two groups of clamping rings, a locking nut 804 is arranged on the outer wall of the second clamping plate 805 on the side far away from the first clamping plate 802, a locking bolt 801 is arranged on the outer wall of the first clamping plate 802 on the side far away from the second clamping plate 805, and one end of the locking bolt 801 sequentially penetrates through the first clamping plate 802 and the second clamping plate 805 and is in threaded connection with the locking nut 804;
the locking bolt 801 is rotated to sequentially penetrate through the first clamping plate 802 and the second clamping plate 805 and screwed into the locking nut 804, so that the clamping ring 803 is arranged at the connecting position of the air inlet 7 and the air injection pipe 9 for sealing treatment, and the phenomenon of leakage generated during air injection of the purification system is reduced;
a control panel 10 is installed on the outer wall of the cylinder 1 below the air inlet 7, the type of the control panel 10 can be GC-1, a discharge mechanism 11 is arranged on the outer wall of the cylinder 1 below the control panel 10, a hollow cylinder 1101, an overflow hole 1102, a distance sensor 1103, an electromagnetic valve 1104, a liquid discharge port 1105 and a floating block 1106 are sequentially arranged inside the discharge mechanism 11, the hollow cylinder 1101 is arranged on one side of the bottom of the cylinder 1, the floating block 1106 is arranged at the bottom end inside the hollow cylinder 1101, the distance sensor 1103 is installed inside the hollow cylinder 1101 above the floating block 1106 through a support, the type of the distance sensor 1103 can be E2EM-X16MX, the output end of the distance sensor 1103 is electrically connected with the input end of a single chip microcomputer inside the control panel 10, the overflow hole 1102 is arranged on the inner wall of the hollow cylinder 1101 below the distance sensor 1103, and one end of the overflow hole 1102 extends, a liquid discharge port 1105 is arranged on the inner wall of the cylinder body 1 at one side of the hollow cylinder 1101, one end of the liquid discharge port 1105 extends to the outside of the cylinder body 1, an electromagnetic valve 1104 is arranged on the outer wall at one side of the liquid discharge port 1105, the type of the electromagnetic valve 1104 can be 4V210-08, and the input end of the electromagnetic valve 1104 is electrically connected with the output end of the single chip microcomputer in the control panel 10;
through the overflow function of the downcomer 2, the mist drops in the cyclone separation chamber 5 fall to the bottom of the cylinder 1 through the downcomer 2 to form ammonium sulfate mother liquor, when the liquid level of the ammonium sulfate mother liquor reaches the position of the overflow hole 1102, the ammonium sulfate mother liquor flows into the hollow cylinder 1101 through the overflow hole 1102, the floating block 1106 is located in the hollow cylinder 1101 and floats upwards, the distance between the floating block and the distance sensor 1103 changes, the distance sensor 1103 transmits the signal to the control panel 10, the control panel 10 controls the electromagnetic valve 1104 to open, so that the liquid discharge port 1105 is opened and closed, the ammonium sulfate mother liquor at the bottom of the cylinder 1 is discharged through the liquid discharge port 1105, meanwhile, the ammonium sulfate mother liquor in the hollow cylinder 1101 can be discharged in time due to the arrangement of the corresponding through holes on the outer wall of one side of the bottom of the hollow cylinder 1101, and the function of the purification system for automatically discharging the ammonium sulfate mother liquor is realized, the convenience of the purification system in use is improved.
The working principle is as follows: when the purification system is used, firstly, the gas injection pipe 9 is connected to the connecting end of the gas port 7, so that the gas is injected into the cylinder 1 from the gas injection pipe 9 through the gas port 7, at the moment, the gas enters the lower end conduit 3 from the bottom of the lower end conduit 3, under the action of the rotational flow plate 4, the gas spirally rises to the interior of the rotational flow separation chamber 5 for separation, and acid mist existing in the gas flows through the rotational flow plate 4, the gas flow is rotationally sprayed out along the plate page direction of the rotational flow plate 4, the flow speed is reduced at the pipe body of the rotational flow separation chamber 5 with the diameter expanded, the mist drops are thrown to the inner wall of the pipe body of the rotational flow separation chamber 5 to form mist drops due to the centrifugal force generated by the rotation of the gas flow, the mist drops can fall to the bottom of the rotational flow separation chamber 5 due to gravity, at the moment, the gas after the mist is separated can be discharged through the gas outlet 6, so as to achieve the purpose of removing, then the gas is purified, the locking bolt 801 is rotated to sequentially penetrate through the first clamping plate 802 and the second clamping plate 805 and screwed into the locking nut 804, the snap ring 803 is arranged at the connecting position of the air inlet 7 and the air injection pipe 9 to be sealed, the phenomenon of leakage generated during air injection of the purification system is reduced, then through the overflow effect of the downcomer 2, the fog drops in the cyclone separation chamber 5 fall to the bottom of the cylinder 1 through the downcomer 2 to form ammonium sulfate mother liquor, when the liquid level of the ammonium sulfate mother liquor reaches the position of the overflow hole 1102, the ammonium sulfate mother liquor flows into the hollow cylinder 1101 through the overflow hole 1102, at the moment, the floating block 1106 is positioned in the hollow cylinder 1101 and floats upwards, so that the distance between the floating block and the distance sensor 1103 is changed, at the moment, the distance sensor 1103 transmits the signal to the control panel 10, the control panel 10 controls the solenoid valve 1104 to open, so that the drain 1105 is opened and closed, thereby leading the ammonium sulfate mother liquor at the bottom of the cylinder body 1 to be discharged through the liquid outlet 1105, meanwhile, because the outer wall of one side of the bottom of the hollow cylinder 1101 is provided with a corresponding through hole, so that the ammonium sulfate mother liquor in the hollow cylinder 1101 can be discharged in time, the function of automatically discharging the ammonium sulfate mother liquor by the purification system is realized, the convenience of the purification system in use is improved, finally, after the spiral column 15 is screwed into the spiral connector 14 and the lifting amplitude of the rubber base plate 12 is limited by the annular frame 13, so that the rubber packing 12 is installed at the bottom of the ring frame 13, to prevent the bottom of the cylinder 1 from making direct contact with the ground, and then can reduce the phenomenon that the bottom of the cylinder 1 produces the abrasion because of the friction, the integrality of the cylinder 1 when having guaranteed the clean system to use, thus finish the use of the clean system.
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 (7)
1. The utility model provides an adopt whirl board vapour and liquid separator's coal gas clean system, includes barrel (1), lower extreme pipe (3), whirl board (4), cyclone chamber (5) and gas vent (6), its characterized in that: a cyclone separation chamber (5) is arranged at the central position of the top of the barrel (1), a cyclone plate (4) is arranged at the central position of the bottom end of the cyclone separation chamber (5), a lower end guide pipe (3) is arranged at one end, far away from the cyclone separation chamber (5), of the cyclone plate (4), a down-flow pipe (2) is fixed at the bottom end of the cyclone separation chamber (5) on one side of the lower end guide pipe (3), an exhaust port (6) is arranged at the central position of the top end of the barrel (1), the bottom end of the exhaust port (6) extends to the inside of the barrel (1) and is communicated with the top end of the cyclone separation chamber (5), an air receiving port (7) is arranged on the outer wall on one side of the barrel (1), one end of the air receiving port (7) extends to the inside of the barrel (1), an air injection pipe (9) is arranged at one end, far away from the barrel (1), of the air injection pipe (9) and, and a control panel (10) is arranged on the outer wall of the cylinder body (1) below the air receiving port (7), and a discharge mechanism (11) is arranged on the outer wall of the cylinder body (1) below the control panel (10).
2. The gas purification system using a swirl plate gas-liquid separator according to claim 1, wherein: the edge position department of barrel (1) bottom is equipped with annular frame (13), and the below of annular frame (13) is installed rubber tie plate (12).
3. The gas purification system using a swirl plate gas-liquid separator according to claim 2, wherein: the central point department of barrel (1) bottom is fixed with spiral connector (14), and the inside threaded connection of spiral connector (14) has spiral post (15), and the bottom of spiral post (15) extends to the outside of spiral connector (14) and with the top fixed connection of rubber tie plate (12).
4. The gas purification system using a swirl plate gas-liquid separator according to claim 1, wherein: the inside of pipe strap structure (8) is equipped with locking bolt (801), first splint (802), snap ring (803), lock nut (804) and second splint (805) in proper order, connect gas port (7) and the contact position department of gas injection pipe (9) to install two sets of snap rings (803), and be fixed with first splint (802) and second splint (805) on the outer wall of snap ring (803) both sides respectively.
5. The gas purification system using a cyclone plate gas-liquid separator according to claim 4, wherein: the outer wall of one side, far away from the first clamping plate (802), of the second clamping plate (805) is provided with a locking nut (804), the outer wall of one side, far away from the second clamping plate (805), of the first clamping plate (802) is provided with a locking bolt (801), and one end of the locking bolt (801) sequentially penetrates through the first clamping plate (802) and the second clamping plate (805) and is in threaded connection with the locking nut (804).
6. The gas purification system using a swirl plate gas-liquid separator according to claim 1, wherein: the inside of emission mechanism (11) is equipped with cavity cylinder (1101), overflow hole (1102), distance sensor (1103), solenoid valve (1104), leakage fluid dram (1105) and floating block (1106) in proper order, one side of barrel (1) bottom is equipped with cavity cylinder (1101), and the inside bottom of cavity cylinder (1101) is equipped with floating block (1106), and has distance sensor (1103) through the support mounting to the inside of cavity cylinder (1101) above floating block (1106), is equipped with overflow hole (1102) on the cavity cylinder (1101) inner wall of distance sensor (1103) below, and the one end of overflow hole (1102) extends to the outside of cavity cylinder (1101).
7. The gas purification system using a cyclone plate gas-liquid separator according to claim 6, wherein: the inner wall of the barrel body (1) on one side of the hollow barrel body (1101) is provided with a liquid discharge port (1105), one end of the liquid discharge port (1105) extends to the outside of the barrel body (1), and the outer wall on one side of the liquid discharge port (1105) is provided with an electromagnetic valve (1104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038957.7A CN112521984A (en) | 2020-09-28 | 2020-09-28 | Adopt whirl board vapour and liquid separator's coal gas clean system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011038957.7A CN112521984A (en) | 2020-09-28 | 2020-09-28 | Adopt whirl board vapour and liquid separator's coal gas clean system |
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| Publication Number | Publication Date |
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| CN112521984A true CN112521984A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011038957.7A Pending CN112521984A (en) | 2020-09-28 | 2020-09-28 | Adopt whirl board vapour and liquid separator's coal gas clean system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2436577A1 (en) * | 1974-07-30 | 1976-02-12 | Baum Verfahrenstechnik | Tar mist separation from coke oven gas - by ammonia liquor spraying using a venturi scrubber and separator in common reactor |
| CN102408922A (en) * | 2011-12-15 | 2012-04-11 | 中冶焦耐(大连)工程技术有限公司 | Gas purification system spray saturator adopting whirlwind board gas-liquid separator |
| CN106362224A (en) * | 2016-08-29 | 2017-02-01 | 宋宏强 | Medical body fluid metering and control system and metering method |
| CN106643983A (en) * | 2016-12-13 | 2017-05-10 | 浙江海洋大学 | LNG liquid level detecting mechanism |
| CN110681496A (en) * | 2019-11-14 | 2020-01-14 | 丹东东方测控技术股份有限公司 | Automatic control system and control method for liquid level of mineral separation flotation machine |
-
2020
- 2020-09-28 CN CN202011038957.7A patent/CN112521984A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2436577A1 (en) * | 1974-07-30 | 1976-02-12 | Baum Verfahrenstechnik | Tar mist separation from coke oven gas - by ammonia liquor spraying using a venturi scrubber and separator in common reactor |
| CN102408922A (en) * | 2011-12-15 | 2012-04-11 | 中冶焦耐(大连)工程技术有限公司 | Gas purification system spray saturator adopting whirlwind board gas-liquid separator |
| CN106362224A (en) * | 2016-08-29 | 2017-02-01 | 宋宏强 | Medical body fluid metering and control system and metering method |
| CN106643983A (en) * | 2016-12-13 | 2017-05-10 | 浙江海洋大学 | LNG liquid level detecting mechanism |
| CN110681496A (en) * | 2019-11-14 | 2020-01-14 | 丹东东方测控技术股份有限公司 | Automatic control system and control method for liquid level of mineral separation flotation machine |
Non-Patent Citations (1)
| Title |
|---|
| 煤炭工业职业技能鉴定指导中心: "《矿井防尘工》", 31 October 2016, 煤炭工业出版社 * |
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Application publication date: 20210319 |
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