CN107610789B - Liquid level double-measuring device - Google Patents
Liquid level double-measuring device Download PDFInfo
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- CN107610789B CN107610789B CN201710778194.1A CN201710778194A CN107610789B CN 107610789 B CN107610789 B CN 107610789B CN 201710778194 A CN201710778194 A CN 201710778194A CN 107610789 B CN107610789 B CN 107610789B
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- liquid level
- blind plate
- heavy water
- collecting box
- probe
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- 239000007788 liquid Substances 0.000 title claims abstract description 182
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 claims abstract description 138
- 239000000523 sample Substances 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 230000009977 dual effect Effects 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 8
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention belongs to the technical field of heavy water stacking and material changing systems of nuclear power stations, in particular to a liquid level double-measuring device, and aims to develop a double liquid level monitoring system, wherein the original liquid level monitoring system is reserved, and the redundancy of the liquid level monitoring system is increased. Ensure that heavy water cannot overflow, and cause the risk of accidental dose irradiation and factory pollution to workers. And the working personnel and the environment are effectively protected. The method is characterized in that: the device comprises a heavy water collecting box, a liquid level probe assembly, a water inlet pipeline, an exhaust port, a binding post, a blind plate, a liquid level transmitter, a liquid level alarm, a pressure transmitter, a liquid level display, a first stop valve, a second stop valve, a drainage pump and a drainage pipeline. The dual liquid level measuring device disclosed by the invention is safe, reliable, convenient to use, strong in stability and high in economic benefit, ensures that heavy water cannot overflow, causes risks of accidental dose irradiation to workers and factory pollution, and effectively protects the workers and the environment.
Description
Technical Field
The invention belongs to the technical field of heavy water stacking and material changing systems of nuclear power stations, and particularly relates to a liquid level double-measuring device.
Background
The liquid level control of heavy water collection tank 35230-TK3 is provided with a liquid level detection assembly with 5 probes, and the following 4 liquid level signals are provided through a liquid level transmitter: the height is ultrahigh; high control; low control; ultra-low. Under normal automatic conditions, when the water level of the water tank rises to the high control liquid level, the heavy water collecting pump P3 at the outlet of the bottom of the water tank is started, and when the water level of the water tank falls to the low control liquid level, the heavy water collecting pump P3 is stopped. In addition, the ultra-low level provides an interlock that inhibits the heavy water collection pump from being started when the tank level is below ultra-low. During actual debugging and operation, occasional failures of ultra-high, high-control, low-level and ultra-low-level control are found due to instability of the circuit and the probe assembly. During operation, an event has occurred that causes the overflow of heavy water from the tank's vent due to the tank not triggering the pump-down interlock signal in time at high levels. The imperfections of the original design mainly include two aspects: 1. the method is characterized in that the liquid level of a water tank is greatly influenced by the environment by the opening/closing quantity of a liquid level probe, the conductivity of a medium, the contact resistance of the probe and the sensitivity of a liquid level transmitter, and the liquid level probe is uniformly distributed, because the liquid level probe is arranged on the same flange, condensation water drops are generated between the probes due to the fact that the distance between the probes is relatively short, the probes are connected, logic errors are caused, the alarm does not give an alarm, and the alarm does not give an alarm in the case that the inlet heat-shrinkable sleeve is adopted to shrink at the root of the probe, so that even if the condensation water drops exist, the probes are not connected, but other reasons cannot be changed, the control of the final liquid level is influenced, the control precision is poor, and heavy water leakage is caused; 2. the box does not have liquid level indication function, and remote operation's charging tray platform operating personnel can't know the concrete liquid level in the water tank. In order to improve the reliability of the water tank liquid level control system, a set of independent and redundant liquid level monitoring and alarming devices are needed to be added. The new design changes need to meet the following requirements:
1. The newly added liquid level detection equipment can provide an analog signal, and an indication instrument is arranged on the main control panel, so that operators can monitor the liquid level of the heavy water collecting box on line at any time.
2. The newly added liquid level detection equipment needs to be capable of providing an ultra-high signal and an ultra-low signal, the ultra-high signal is introduced into a start-stop loop of the heavy water collecting pump, and the ultra-low signal provides an alarm to increase the reliability of a liquid level control loop.
Disclosure of Invention
The invention aims to develop a set of dual liquid level monitoring system, wherein the original set is reserved, and the redundancy of the set of liquid level monitoring system is increased. Ensure that heavy water cannot overflow, and cause the risk of accidental dose irradiation and factory pollution to workers. And the working personnel and the environment are effectively protected.
The invention is realized in the following way:
The liquid level double-measuring device comprises a heavy water collecting box, a liquid level probe assembly, a water inlet pipeline, an exhaust port, a binding post, a blind plate, a liquid level transmitter, a liquid level alarm, a pressure transmitter, a liquid level display, a first stop valve, a second stop valve, a drainage pump and a drainage pipeline; the blind plate is arranged at the upper end of the heavy water collecting box and is used for fixing the liquid level probe assembly; the liquid level probe assembly is arranged on the blind plate, and the lower end of the liquid level probe assembly penetrates through the blind plate and stretches into the heavy water collecting box; water inlet pipeline and exhaust port the blind plate is arranged on one side of the blind plate; the binding post is fixed at the upper end of the liquid level probe assembly and is used for installing a cable; one end of the liquid level transmitter is connected with the binding post through a cable, and the other end of the liquid level transmitter is connected with the liquid level alarm through a cable and is used for transmitting liquid level signals and controlling the opening and closing of the drainage pump; one end of the first stop valve is connected with a water outlet of the heavy water collecting box and one end of the second stop valve through pipelines respectively, and the other end of the first stop valve is connected with the pressure transmitter through a pipeline; the pressure transmitter is connected with the liquid level display through a cable and is used for outputting a liquid level signal of the heavy water collecting box to the liquid level display; the other end of the second stop valve is connected with one end of the drainage pump through a pipeline; the other end of the drainage pump is connected with a drainage pipeline.
The heavy water collecting box is integrally barrel-shaped, a through hole is formed in the center of the upper end face, an annular outer edge is arranged at the upper end of the through hole, and a plurality of blind plate mounting holes are uniformly distributed on the outer edge along the circumferential direction and used for fixing blind plates; a water outlet is arranged at the lower end of the heavy water collecting box and is used for discharging heavy water.
The blind plate is in a circular plate shape as a whole, and a plurality of probe fixing holes are uniformly distributed on the inner side of the upper end face along the circumferential direction and are used for fixing the liquid level probe assembly; a plurality of mounting holes are uniformly distributed on the outer side of the probe fixing hole along the circumferential direction and correspond to the blind plate mounting holes of the heavy water collecting box for fixing the blind plates.
The above-mentioned probe-fixing holes are five or more.
The liquid level probe assembly comprises a magnetic joint, a tightening nut and a liquid level probe; the liquid level probe is fixed at the lower end of the magnetic joint through a fastening nut; the binding post is fixed at the upper end of the magnetic joint; the magnetic joint passes through the probe fixing hole on the blind plate and is fixed on the blind plate through the fastening nut.
The outer surface of the magnetic joint is insulated from the blind plate by the magnet, and the inside of the magnetic joint is made of conductive materials; the upper end of the conductive material is fixedly connected with the binding post, and the lower end of the conductive material is provided with a hole with internal threads and is fixedly connected with the liquid level probe.
The upper part of the liquid level probe is provided with external threads for connecting the magnetic joint and the tightening nut; the liquid level probe is divided into a public probe, an ultra-low liquid level probe, a high liquid level probe and an ultra-high liquid level probe, and the lengths of the liquid level probes are sequentially reduced; the liquid level probe assemblies are five in number, and five different liquid level probes are respectively installed.
The heavy water collecting box, the liquid level probe assembly and the blind plate are all made of 304 stainless steel; the water inlet pipeline, the water outlet pipeline and the pipeline are all made of nuclear stainless steel pipes.
The invention also comprises a sealing ring; the sealing ring is sleeved on the magnetic joint and positioned between the fastening nut and the blind plate and is used for sealing between the liquid level probe assembly and the blind plate.
The invention also comprises a blind plate fastening bolt; the blind plate fastening bolts are arranged in the blind plate mounting holes of the blind plate and the heavy water collecting box and used for fixing the blind plate and the heavy water collecting box.
The beneficial effects of the invention are as follows:
The dual liquid level measuring device disclosed by the invention is safe, reliable, convenient to use, strong in stability and high in economic benefit, ensures that heavy water cannot overflow, causes risks of accidental dose irradiation to workers and factory pollution, and effectively protects the workers and the environment. The method meets the requirements that the liquid level monitoring of the heavy water reactor fuel operating system 3523-TK3 is used for a long time, and creates the advanced level of similar equipment for liquid level measurement of the same power station at home and abroad. Through the operation in recent years, the rod charts of the ultra-high, medium, low and ultra-low liquid level can be displayed, different liquid level audible alarms are sent out, no heavy water overflow event occurs so far, and a good monitoring effect is achieved.
Drawings
FIG. 1 is a schematic diagram of a dual level measurement device of the present invention;
FIG. 2 is a top view of a blind plate of a dual level measurement apparatus of the present invention;
FIG. 3 is a schematic illustration of the connection of a liquid level probe assembly and a blind plate of a dual liquid level measurement apparatus of the present invention;
Fig. 4 is a schematic structural view of a liquid level probe assembly of a liquid level dual measuring device of the present invention.
Wherein: 1. heavy water collecting box, 2, liquid level probe assembly, 3, water inlet pipeline, 4, exhaust port, 5, binding post, 6, blind plate, 7, liquid level transmitter, 8, liquid level alarm, 9, pressure transmitter, 10, liquid level display, 11, first stop valve, 12, second stop valve, 13, drainage pump, 14, drainage pipeline, 15, sealing ring, 16, blind plate fastening bolt, 17, magnetic joint, 18, tightening nut, 19, liquid level probe.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1, the liquid level dual measuring device comprises a heavy water collecting box 1, a liquid level probe assembly 2, a water inlet pipeline 3, an exhaust port 4, a binding post 5, a blind plate 6, a liquid level transmitter 7, a liquid level alarm 8, a pressure transmitter 9, a liquid level display 10, a first stop valve 11, a second stop valve 12, a drainage pump 13 and a drainage pipeline 14. The blind plate 6 is installed at the upper end of the heavy water collecting tank 1 for fixing the liquid level probe assembly 2. The liquid level probe assembly 2 is arranged on the blind plate 6, and the lower end of the liquid level probe assembly penetrates through the blind plate 6 and stretches into the heavy water collecting box 1. The water inlet line 3 and the air outlet 4 are provided at one side of the blind plate 6. The wiring post 5 is fixed at the upper end of the liquid level probe assembly 2 and is used for installing a cable. One end of the liquid level transmitter 7 is connected with the binding post 5 through a cable, and the other end is connected with the liquid level alarm 8 through a cable, and is used for transmitting liquid level signals and controlling the opening and closing of the drainage pump 13. One end of the first stop valve 11 is connected with a water outlet of the heavy water collecting box 1 and one end of the second stop valve 12 through pipelines respectively, and the other end is connected with the pressure transmitter 9 through pipelines. The pressure transmitter 9 is connected with the liquid level display 10 through a cable line and is used for outputting a liquid level signal of the heavy water collecting box 1 to the liquid level display 10. The other end of the second shut-off valve 12 is connected to one end of the drain pump 13 through a pipe. The other end of the drain pump 13 is connected to a drain line 14.
The heavy water collecting box 1 is integrally barrel-shaped, a through hole is arranged in the center of the upper end face, an annular outer edge is arranged at the upper end of the through hole, and a plurality of blind plate mounting holes are uniformly distributed on the outer edge along the circumferential direction and used for fixing the blind plates 6. A drain port is provided at the lower end of the heavy water collecting tank 1 for draining the heavy water.
As shown in fig. 2, the blind plate 6 is in a circular plate shape as a whole, and a plurality of probe fixing holes are uniformly distributed on the inner side of the upper end face along the circumferential direction for fixing the liquid level probe assembly 2. A plurality of mounting holes are uniformly distributed on the outer side of the probe fixing hole along the circumferential direction, correspond to the blind plate mounting holes of the heavy water collecting box 1 and are used for fixing the blind plates 6.
In this embodiment, the number of the probe fixing holes is five or more.
As shown in fig. 3 and 4, the fluid level probe assembly 2 includes a magnetic joint 17, a union nut 18 and a fluid level probe 19. The liquid level probe 19 is fixed at the lower end of the magnetic joint 17 by tightening the nut 18. The terminal 5 is fixed to the upper end of the magnetic connector 17. The magnetic connector 17 passes through a probe fixing hole on the blind plate 6 and is fixed on the blind plate 6 through a fastening nut.
The outer surface of the magnetic joint 17 is insulated from the blind plate 6 by magnetism, and the inside is made of conductive materials. The upper end of the conductive material is fixedly connected with the binding post 5, and the lower end is provided with a hole with internal threads and is fixedly connected with the liquid level probe 19.
In this embodiment, the upper part of the level probe 19 is provided with external threads for connecting the magnetic joint 17 and the tightening nut 18. The liquid level probe 19 is divided into a common probe, an ultra-low liquid level probe, a high liquid level probe and an ultra-high liquid level probe, and the lengths of the liquid level probes are sequentially reduced. The liquid level probe assembly 2 has five liquid level probes 19, which are respectively installed.
In the embodiment, the heavy water collecting box 1, the liquid level probe assembly 2 and the blind plate 6 are all made of 304 stainless steel; the water inlet pipeline 3, the water outlet pipeline 14 and the pipeline are all made of nuclear stainless steel pipes.
Preferably, the invention also comprises a sealing ring 15. The sealing ring 15 is sleeved on the magnetic joint 17 and is positioned between the fastening nut and the blind plate 6, so as to realize sealing between the liquid level probe assembly 2 and the blind plate 6.
Preferably, the present invention also includes blind plate fastening bolts 16. Blind plate fastening bolts 16 are installed in the mounting holes of the blind plates 6 and the blind plate mounting holes of the heavy water collecting tank 1 for fixing the blind plates 6 and the heavy water collecting tank 1.
The working principle of the invention is as follows:
1. the drain pump 13 is started until the heavy water collection tank 1 is emptied.
2. The liquid level transmitter 7 and the liquid level alarm 8 are connected with direct current.
3. The power supply is turned on, and the heavy water is injected into the heavy water collecting tank 1 through the water inlet pipeline 3. When reaching the ultralow liquid level, when the heavy water overflows through the public probe and the ultralow liquid level probe, because the heavy water conductivity forms a resistor between the public probe and the ultralow liquid level probe, the signal is transmitted to the liquid level transmitter 7 through a cable, the liquid level transmitter 7 outputs a signal to the liquid level alarm 8 through the conversion, and the light indication exists, and at the moment, the ultralow liquid level lamp is on. The liquid level display 10 displays a pressure value, and the pressure value is set, so that the liquid level display 10 forms an ultralow liquid level bar graph.
4. And continuously injecting water into the heavy water collecting tank 1, outputting a low liquid level signal when water overflows the common probe and the low liquid level probe, displaying a pressure value by the liquid level display 10, setting the pressure, and forming a low liquid level bar graph by the liquid level display 10.
5. And continuously injecting water into the heavy water collecting box 1, outputting a high liquid level signal when water overflows the common probe and the high liquid level probe, displaying a pressure value by the liquid level display 10, setting the pressure, and forming a high liquid level bar graph by the liquid level display 10.
6. And continuously injecting water into the heavy water collecting box 1, outputting an ultrahigh liquid level signal when water overflows through the common probe and the ultrahigh liquid level probe, setting the pressure by the liquid level display 10, and forming an ultrahigh liquid level bar graph by the liquid level display 10.
7. After the setting of the ultra-low, high and ultra-high liquid level is completed, the drainage pump 13 is manually started to drain heavy water in the heavy water tank to the ultra-low liquid level lamp of the liquid level alarm 8 to be on.
8. Heavy water is injected into the heavy water collecting box from the water inlet pipeline 3, when the light of the liquid level alarm 8 displays the low liquid level, and the bar chart of the liquid level display 10 displays the low liquid level and has sound reminding.
9. When the water level of the heavy water collecting tank reaches a high liquid level, the liquid level alarm 8 outputs a high liquid level light indication, the liquid level display 10 is displayed in a bar graph, and meanwhile, the liquid level transmitter 7 outputs a signal to the drainage pump 13 to start the drainage pump. When the heavy water collecting tank 1 is drained to a low liquid level, the liquid level transmitter 7 outputs a signal to the drainage pump 13 controller to stop the pump.
Above through a large amount of experimental tests verification, all functions all satisfy the design function, and terminal 5, blind plate 6, liquid level transmitter 7, liquid level alarm 8 and pressure transmitter 9, liquid level display 10, two sets of liquid level monitoring system of first stop valve 11 have effectively prevented single equipment and have become invalid, effectively remind operating personnel, prevent heavy water and spill over.
The embodiment of the present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The invention may be practiced otherwise than as specifically described in the specification.
Claims (7)
1. The utility model provides a dual measuring device of liquid level which characterized in that: the device comprises a heavy water collecting box (1), a liquid level probe assembly (2), a water inlet pipeline (3), an exhaust port (4), a binding post (5), a blind plate (6), a liquid level transmitter (7), a liquid level alarm (8), a pressure transmitter (9), a liquid level display (10), a first stop valve (11), a second stop valve (12), a drainage pump (13) and a drainage pipeline (14); the blind plate (6) is arranged at the upper end of the heavy water collecting box (1) and is used for fixing the liquid level probe assembly (2); the liquid level probe assembly (2) is arranged on the blind plate (6), and the lower end of the liquid level probe assembly penetrates through the blind plate (6) and stretches into the heavy water collecting box (1); the water inlet pipeline (3) and the air outlet (4) are arranged on one side of the blind plate (6); the binding post (5) is fixed at the upper end of the liquid level probe assembly (2) and is used for installing a cable; one end of the liquid level transmitter (7) is connected with the binding post (5) through a cable, and the other end of the liquid level transmitter is connected with the liquid level alarm (8) through a cable, and is used for transmitting liquid level signals and controlling the opening and closing of the drainage pump (13); one end of the first stop valve (11) is connected with a water outlet of the heavy water collecting box (1) and one end of the second stop valve (12) through pipelines respectively, and the other end of the first stop valve is connected with the pressure transmitter (9) through pipelines; the pressure transmitter (9) is connected with the liquid level display (10) through a cable and is used for outputting a liquid level signal of the heavy water collecting box (1) to the liquid level display (10); the other end of the second stop valve (12) is connected with one end of the drainage pump (13) through a pipeline; the other end of the drainage pump (13) is connected with a drainage pipeline (14);
The liquid level probe assembly (2) comprises a magnetic joint (17), a tightening nut (18) and a liquid level probe (19); the liquid level probe (19) is fixed at the lower end of the magnetic joint (17) through a tightening nut (18); the binding post (5) is fixed at the upper end of the magnetic joint (17); the magnetic joint (17) passes through a probe fixing hole on the blind plate (6) and is fixed on the blind plate (6) through a fastening nut;
the outer surface of the magnetic joint (17) is insulated from the blind plate (6) by magnetism, and the inside is made of conductive materials; the upper end of the conductive material is fixedly connected with the binding post (5), and the lower end of the conductive material is provided with a hole with internal threads and is fixedly connected with the liquid level probe (19);
the upper part of the liquid level probe (19) is provided with external threads for connecting the magnetic joint (17) and the tightening nut (18);
The liquid level probe (19) is divided into a public probe, an ultra-low liquid level probe, a high liquid level probe and an ultra-high liquid level probe, and the lengths of the liquid level probes are sequentially reduced; the liquid level probe assemblies (2) are five in number, and five different liquid level probes (19) are respectively installed.
2. A dual level measurement device according to claim 1, characterized in that: the heavy water collecting box (1) is integrally barrel-shaped, a through hole is arranged in the center of the upper end face, an annular outer edge is arranged at the upper end of the through hole, and a plurality of blind plate mounting holes are uniformly distributed on the outer edge along the circumferential direction and used for fixing the blind plates (6); a water outlet is arranged at the lower end of the heavy water collecting box (1) and is used for discharging heavy water.
3. A dual level measurement device according to claim 2, characterized in that: the blind plate (6) is in a circular plate shape as a whole, and a plurality of probe fixing holes are uniformly distributed on the inner side of the upper end face along the circumferential direction and are used for fixing the liquid level probe assembly (2); a plurality of mounting holes are uniformly distributed on the outer side of the probe fixing hole along the circumferential direction and correspond to the blind plate mounting holes of the heavy water collecting box (1) for fixing the blind plates (6).
4. A dual level measurement device according to claim 3, characterized in that: the number of the probe fixing holes is more than or equal to five.
5. A dual level measurement device according to claim 1, characterized in that: the heavy water collecting box (1), the liquid level probe assembly (2) and the blind plate (6) are all made of 304 stainless steel; the water inlet pipeline (3), the water outlet pipeline (14) and the pipeline are made of nuclear stainless steel pipes.
6. A dual level measurement device according to claim 1, characterized in that: it also comprises a sealing ring (15); the sealing ring (15) is sleeved on the magnetic joint (17) and is positioned between the fastening nut and the blind plate (6) and used for sealing between the liquid level probe assembly (2) and the blind plate (6).
7. A dual level measurement device according to claim 3, characterized in that: it also comprises a blind plate fastening bolt (16); the blind plate fastening bolts (16) are arranged in the mounting holes of the blind plates (6) and the blind plate mounting holes of the heavy water collecting box (1) and used for fixing the blind plates (6) and the heavy water collecting box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778194.1A CN107610789B (en) | 2017-09-01 | 2017-09-01 | Liquid level double-measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778194.1A CN107610789B (en) | 2017-09-01 | 2017-09-01 | Liquid level double-measuring device |
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| Publication Number | Publication Date |
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| CN107610789A CN107610789A (en) | 2018-01-19 |
| CN107610789B true CN107610789B (en) | 2024-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710778194.1A Active CN107610789B (en) | 2017-09-01 | 2017-09-01 | Liquid level double-measuring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113358190B (en) * | 2021-05-31 | 2023-01-17 | 天水华天传感器有限公司 | Water alarm liquid level transmitter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203226657U (en) * | 2013-05-14 | 2013-10-09 | 宁波澳成电器制造有限公司 | Water pot with liquid level detectors |
| CN204212245U (en) * | 2013-11-18 | 2015-03-18 | 中国科学院生态环境研究中心 | A kind of low-pressure drainage system collected for municipal wastewater |
| CN207264791U (en) * | 2017-09-01 | 2018-04-20 | 中核核电运行管理有限公司 | A kind of dual measuring device of liquid level |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200410700Y1 (en) * | 2005-12-22 | 2006-03-08 | (주)지오엘리먼트 | Probe for capacitive level sensor and chemical container with same |
| DE202010004533U1 (en) * | 2010-04-01 | 2010-07-08 | Petersen, Thomas C. | Transmitter for remote measurement of a varying level in a pressureless fluid container in combination with a lifter protection valve |
| CN102359806B (en) * | 2011-09-20 | 2012-11-28 | 西安交通大学 | Liquid metal level probe and using method thereof |
| CN103234606B (en) * | 2013-04-19 | 2016-01-20 | 睿能太宇（沈阳）能源技术有限公司 | A kind of flow verification system and calibration method thereof |
| CN103308114B (en) * | 2013-06-06 | 2015-12-02 | 山东默锐科技有限公司 | The positive pole of liquid level emasuring device and sodium metal liquid level emasuring device |
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2017
- 2017-09-01 CN CN201710778194.1A patent/CN107610789B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203226657U (en) * | 2013-05-14 | 2013-10-09 | 宁波澳成电器制造有限公司 | Water pot with liquid level detectors |
| CN204212245U (en) * | 2013-11-18 | 2015-03-18 | 中国科学院生态环境研究中心 | A kind of low-pressure drainage system collected for municipal wastewater |
| CN207264791U (en) * | 2017-09-01 | 2018-04-20 | 中核核电运行管理有限公司 | A kind of dual measuring device of liquid level |
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| CN107610789A (en) | 2018-01-19 |
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