CN112744885A - Demineralized water degassing system and demineralized water degassing method - Google Patents
Demineralized water degassing system and demineralized water degassing method Download PDFInfo
- Publication number
- CN112744885A CN112744885A CN202011626573.7A CN202011626573A CN112744885A CN 112744885 A CN112744885 A CN 112744885A CN 202011626573 A CN202011626573 A CN 202011626573A CN 112744885 A CN112744885 A CN 112744885A
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- vacuum
- water
- demineralized water
- container
- capillary line
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 145
- 238000007872 degassing Methods 0.000 title claims abstract description 43
- 239000002775 capsule Substances 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 238000005086 pumping Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Degasification And Air Bubble Elimination (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a demineralized water degassing system and a demineralized water degassing method, wherein the demineralized water degassing system comprises a water container for containing demineralized water, a demineralized water output pipeline and a vacuumizing device; one end of the desalted water output pipeline is connected with the water container, and the other end of the desalted water output pipeline is respectively connected with the capillary line and the membrane box so as to convey desalted water to the capillary line and the membrane box; the vacuum pumping device is respectively connected with the water container, the capillary line and the membrane box and respectively pumps vacuum in the upper air cavity, the capillary line and the membrane box in the water container. The invention effectively reduces the content of the desalted water gas of the diaphragm capsule and the capillary line of a 6000-series nuclear-grade transmitter, ensures the reliability of the replacement process, and reduces the risk of delaying the plan of the major overhaul line; meanwhile, the accuracy of the measurement of the 6000-series important nuclear level transmitter is improved.
Description
Technical Field
The invention relates to the technical field of demineralized water degassing by using a transmitter, in particular to a demineralized water degassing system and a demineralized water degassing method.
Background
The 6000-nuclear-grade transmitter participates in monitoring the water level of the reactor core, particularly directly monitors the water content of the reactor core under the condition of water loss, prevents the reactor core from being exposed, belongs to a post-accident monitoring instrument, and has a self-evident significance. However, as the time of transmitter service increases, the failure rate also increases; if a fault occurs, a maintenance strategy of integral replacement needs to be adopted for the field transmitter. The key technology for implementing replacement and installation is a nuclear-grade transmitter vacuumizing and charging technology, and the technology is complex, high in technical difficulty and long in replacement time.
In a complicated process, a capillary line demineralized water degassing technology is provided, and the main purpose is to ensure that the gas content of a diaphragm capsule (generally comprising an upper isolation diaphragm capsule and a lower isolation diaphragm capsule) connected with a pressure container and the demineralized water of the capillary line meet the requirement. In the present capillary line demineralized water degassing technology, the direct connection, the capillary line carries out the evacuation degasification, because the runner of capillary line is little, influences the efficiency of bleeding for the degasification effect is not good. If the gas content of the filled desalted water is higher, the pressure transmission characteristics of the diaphragm capsule and the capillary line can be directly influenced, and the measurement accuracy and precision of the high-precision instrument are influenced.
Disclosure of Invention
The invention aims to provide a demineralized water degassing system and a demineralized water degassing method for effectively reducing the gas content of demineralized water.
The technical scheme adopted by the invention for solving the technical problems is as follows: the demineralized water degassing system comprises a water container for containing demineralized water, a demineralized water output pipeline and a vacuumizing device;
one end of the desalted water output pipeline is connected with the water container, and the other end of the desalted water output pipeline is respectively connected with the capillary line and the membrane box so as to convey desalted water to the capillary line and the membrane box;
the vacuum pumping device is respectively connected with the water container, the capillary line and the membrane box and respectively pumps vacuum in the upper air cavity, the capillary line and the membrane box in the water container.
Preferably, the vacuum-pumping device comprises a vacuum container and at least one vacuum pump connected with the vacuum container;
the vacuum container is connected with the water container through a first vacuum pipeline and is communicated with an upper air cavity in the water container; the vacuum container is respectively connected with the capillary line and the diaphragm capsule through a second vacuum pipeline.
Preferably, the bottom of the water container is provided with an exhaust tube and a water outlet tube;
the water outlet pipe is connected with one end of the demineralized water output pipeline;
one end of the air exhaust pipe extends to the position above the liquid level in the water container and is communicated with an upper air cavity in the water container; the other end of the air suction pipe extends out of the lower part of the water container and is connected with the first vacuum pipeline.
Preferably, a first interface tube, a second interface tube and a third interface tube are arranged on the vacuum container;
the first interface tube is connected with the vacuum pump, the second interface tube is connected with the first vacuum pipeline, and the third interface tube is connected with the second vacuum pipeline.
Preferably, the vacuum pumping device comprises two vacuum pumps respectively connected with the vacuum containers.
Preferably, the demineralized water degassing system further comprises valves respectively disposed on the demineralized water output conduit, the first vacuum conduit, and the second vacuum conduit.
Preferably, the water container is arranged at a height higher than that of the capillary line and the capsule so as to output the desalted water to the capillary line and the capsule by gravity.
Preferably, the demineralized water degassing system further comprises a UPS power source connected to and supplying power to the evacuation device.
The invention also provides a demineralized water degassing method, which adopts the demineralized water degassing system, and comprises the following steps:
s1, vacuumizing an upper air cavity in the water container through a vacuumizing device to perform degassing treatment;
s2, vacuumizing the capillary line and the film box through a vacuumizing device;
and S3, conveying the demineralized water to the capillary line and the membrane box through the demineralized water output pipeline by the water container.
Preferably, the capsule and capillary line are those of a nuclear grade transmitter.
The invention has the beneficial effects that: the gas content of desalted water of a diaphragm capsule and a capillary line of a 6000-series nuclear-grade transmitter is effectively reduced, the reliability of the replacement process is ensured, and the risk of plan delay of an overhaul main line is reduced; meanwhile, the accuracy of the measurement of the 6000-series important nuclear level transmitter is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the connection of a demineralized water degassing system in accordance with one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a water container in a demineralized water degassing system according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view of a vacuum vessel in a demineralized water degassing system according to an embodiment of the invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a demineralized water degassing system according to an embodiment of the present invention includes a water container 10, a demineralized water output pipe 20, and a vacuum pumping device.
The water container 10 is used to contain demineralized water as a container of demineralized water. The demineralized water output pipe 20 has one end connected to the water container 10 and the other end connected to the capillary line and the membrane cassette, respectively, to deliver demineralized water to the capillary line and the membrane cassette. The vacuumizing device is respectively connected with the water container 10, the capillary line and the membrane box and respectively vacuumizes the upper air cavity, the capillary line and the membrane box in the water container 10.
As shown in fig. 1 and 2, the water container 10 is a closed container, and in order to conveniently replenish the demineralized water, an open-close top cover 13 is arranged on the top of the water container 10, the channel is opened, the top cover 13 is opened, the top of the water container 10 is opened, and the top cover 13 is sealed and closed on the top of the water container 10 after the demineralized water is replenished.
In this embodiment, the bottom of the water container 10 is provided with an air exhaust tube 11 and a water outlet tube 12 for separating water from air. The water outlet pipe 12 is connected and communicated with one end of a demineralized water output pipeline 20 to realize the output of the demineralized water. The demineralized water output pipeline 20 is provided with a valve for controlling the on-off of the pipeline. The valve can be an electromagnetic valve.
One end of the air exhaust pipe 11 extends to the upper part of the liquid level in the water container 10 and is communicated with an upper air cavity in the water container 10; the other end of the air exhaust pipe 11 extends out of the lower part of the water container 10 and is connected with a vacuum-pumping device.
Preferably, the water container 10 is disposed at a height higher than that of the capillary line and the capsule to output the demineralized water to the capillary line and the capsule by gravity without additional power driving.
The vacuum-pumping device comprises a vacuum container 30 and at least one vacuum pump 40 connected with the vacuum container 30. The vacuum container 30 is connected with the water container 10 through a first vacuum pipeline 51 and is communicated with an upper air cavity in the water container 10; vacuum vessel 30 is connected to the capillary line and the capsule, respectively, by a second vacuum line 52. The vacuum pump provides vacuum power to vacuumize the communicated vacuum container 30 and the water container 10, so that the desalted water is in a boiling state, and the contained gas is automatically separated out, thereby realizing the degassing of the desalted water. The vacuum pump 40 provides the vacuum power to the vacuum container 30, the capillary line and the capsule, which are communicated, so that the vacuum value in the capillary line and the capsule can reach the requirement.
The vacuum pump 40 is preferably a pump having high pumping efficiency, such as a vacuum pump having a pumping speed of 4.72L/s. The vacuum vessel 30 is a large-volume vessel such as a 2L-volume vessel.
The vacuum pumping device provides a vacuum pumping chamber through the arrangement of the vacuum container 30, and the vacuum pumping chamber is matched with the work of the vacuum pump 40, so that the vacuum degree can be quickly balanced, the vacuum container 30 always maintains high vacuum, the pressure difference between the vacuum pumping chamber and the air in the capillary pipeline is increased, and the air pumping efficiency is improved.
The first vacuum pipeline 51 and the second vacuum pipeline 52 are respectively provided with a valve for controlling the on-off of the pipelines, and the valve can be preferably an electromagnetic valve.
As shown in fig. 1 and 3, the vacuum container 30 is a closed container, and is provided with a first mouthpiece 31, a second mouthpiece 32, and a third mouthpiece 33. The first mouthpiece 31 is connected to a vacuum pump 40, the second mouthpiece 32 is connected to a first vacuum line 51, and the third mouthpiece 33 is connected to a second vacuum line 52.
Specifically, the first vacuum line 51 is connected between the suction pipe 11 and the second mouthpiece 32; the second vacuum line 52 has one end connected to the third mouthpiece 33 and the other end connected to the capillary line and the capsule, respectively.
The vacuum pump 40 may be connected to the first mouthpiece 31 on the vacuum vessel 10 via a vacuum line 41. The vacuum pipeline 41 is provided with a valve 411 for controlling the on-off of the vacuum pipeline.
Preferably, the evacuation device comprises two vacuum pumps 40 respectively connected to the vacuum container 30, and the dual pumps are operated in parallel, which has significant advantages over the serial operation and the dual-stage pump (mechanical pump + molecular pump), such as high ultimate vacuum value that can be achieved, high evacuation efficiency, and particularly, the capability of evacuating within unit time, which is beneficial to the rapid release of the demineralized water gas.
In the demineralized water degassing system, each valve is preferably a high-vacuum two-way valve, and the leakage rate is 1.3 multiplied by 10- 11Pa.m3And/s, vacuum pumping and degassing effects are guaranteed, and meanwhile, automation is convenient to realize.
Further, the demineralized water degassing system of the invention also comprises a UPS (not shown) which is connected with and supplies power to the vacuumizing device, so that the vacuumizing and charging operation is prevented from being executed again under the condition that the external power supply is lost, and the continuous power supply is ensured.
The demineralized water degassing method is realized by adopting the demineralized water degassing system. Referring to fig. 1-3, the method of degassing demineralized water may include the steps of:
s1, vacuumizing an upper air cavity in the water container 10 through a vacuumizing device to perform degassing treatment;
s2, vacuumizing the capillary line and the film box through a vacuumizing device;
and S3, the water container conveys the demineralized water to the capillary line and the membrane box through the demineralized water output pipeline 20.
In the vacuum pumping device, a vacuum pump 40 is used for pumping vacuum for an upper air cavity in the water container 10 through the communicated vacuum container 30 and the water container 10, so that the vacuum degree reaches a required preset value. The vacuum pump 40 vacuumizes the capillary line and the capsule through the communicated vacuum container 30, the capillary line and the capsule, quickly balances the vacuum degree, enables the vacuum container 30 to always maintain high vacuum, increases the pressure difference with the air in the capillary line, and improves the air extraction efficiency.
The diaphragm capsule and the capillary line can be connected through the sensor connector, so that a vacuum sensor can be conveniently connected, the vacuum value of the capillary line and the diaphragm capsule can be monitored in real time, the vacuum value monitored by the vacuum sensor can be displayed through a display screen of the control terminal, and meanwhile, the vacuum value can be displayed in a trend form.
The invention is suitable for a 6000-series nuclear-grade transmitter, wherein the diaphragm capsule and the capillary line are correspondingly the diaphragm capsule and the capillary line of the nuclear-grade transmitter, so that the gas content of desalted water of the diaphragm capsule and the capillary line of the 6000-series nuclear-grade transmitter can be effectively reduced, the reliability of the replacement process is ensured, and the risk of delaying the plan of major overhaul is reduced; meanwhile, the accuracy of the measurement of the 6000-series important nuclear level transmitter is improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A demineralized water degassing system is characterized by comprising a water container for containing demineralized water, a demineralized water output pipeline and a vacuumizing device;
one end of the desalted water output pipeline is connected with the water container, and the other end of the desalted water output pipeline is respectively connected with the capillary line and the membrane box so as to convey desalted water to the capillary line and the membrane box;
the vacuum pumping device is respectively connected with the water container, the capillary line and the membrane box and respectively pumps vacuum in the upper air cavity, the capillary line and the membrane box in the water container.
2. The system for degassing demineralized water of claim 1 wherein said evacuation means comprises a vacuum vessel, at least one vacuum pump connected to said vacuum vessel;
the vacuum container is connected with the water container through a first vacuum pipeline and is communicated with an upper air cavity in the water container; the vacuum container is respectively connected with the capillary line and the diaphragm capsule through a second vacuum pipeline.
3. The demineralized water degassing system of claim 2 wherein a suction pipe and a water outlet pipe are provided at the bottom of the water container;
the water outlet pipe is connected with one end of the demineralized water output pipeline;
one end of the air exhaust pipe extends to the position above the liquid level in the water container and is communicated with an upper air cavity in the water container; the other end of the air suction pipe extends out of the lower part of the water container and is connected with the first vacuum pipeline.
4. The system of claim 2, wherein the vacuum vessel is provided with a first mouthpiece, a second mouthpiece, and a third mouthpiece;
the first interface tube is connected with the vacuum pump, the second interface tube is connected with the first vacuum pipeline, and the third interface tube is connected with the second vacuum pipeline.
5. The system of claim 2, wherein the evacuation device comprises two vacuum pumps respectively connected to the vacuum vessels.
6. The demineralized water degassing system of claim 2 further comprising valves disposed on the demineralized water output line, first vacuum line, and second vacuum line, respectively.
7. The demineralized water degassing system of claim 1 wherein the water container is positioned at a height above the capillary line and the capsule to deliver demineralized water to the capillary line and the capsule by gravity.
8. The demineralized water degassing system of any one of claims 1-7 further comprising a UPS power source connected to and powering the evacuation device.
9. A method of degassing demineralized water using a system according to any one of claims 1 to 8, characterized in that it comprises the following steps:
s1, vacuumizing an upper air cavity in the water container through a vacuumizing device to perform degassing treatment;
s2, vacuumizing the capillary line and the film box through a vacuumizing device;
and S3, conveying the demineralized water to the capillary line and the membrane box through the demineralized water output pipeline by the water container.
10. The method of degassing demineralized water of claim 9 wherein said capsule and capillary line are those of a nuclear grade transmitter.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626573.7A CN112744885A (en) | 2020-12-30 | 2020-12-30 | Demineralized water degassing system and demineralized water degassing method |
| PCT/CN2021/117530 WO2022142457A1 (en) | 2020-12-30 | 2021-09-09 | Demineralized water deaeration system and demineralized water deaeration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626573.7A CN112744885A (en) | 2020-12-30 | 2020-12-30 | Demineralized water degassing system and demineralized water degassing method |
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| Publication Number | Publication Date |
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| CN112744885A true CN112744885A (en) | 2021-05-04 |
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| CN202011626573.7A Pending CN112744885A (en) | 2020-12-30 | 2020-12-30 | Demineralized water degassing system and demineralized water degassing method |
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| CN (1) | CN112744885A (en) |
| WO (1) | WO2022142457A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142457A1 (en) * | 2020-12-30 | 2022-07-07 | 中广核核电运营有限公司 | Demineralized water deaeration system and demineralized water deaeration method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383958A (en) * | 1994-02-09 | 1995-01-24 | Westinghouse Electric Corporation | Deaeration system |
| JP2003164860A (en) * | 2001-11-29 | 2003-06-10 | Sasakura Engineering Co Ltd | Method for separating volatile organic compound in waste water |
| CN101430940A (en) * | 2007-11-06 | 2009-05-13 | 秦山核电公司 | Evacuation liquid-filling apparatus for capillary |
| CN107387364A (en) * | 2017-08-25 | 2017-11-24 | 康沣生物科技(上海)有限公司 | A kind of vacuum system |
| CN108529545B (en) * | 2018-04-04 | 2019-12-03 | 中广核核电运营有限公司 | Transmitter evacuation liquid-filling system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100437001C (en) * | 2005-05-13 | 2008-11-26 | 鸿富锦精密工业（深圳）有限公司 | Vacuum liquid filling device and vacuum liquid filling method |
| CN202869856U (en) * | 2012-01-29 | 2013-04-10 | 北京华德创业环保设备有限公司 | Vacuumizing silicone oil filling structure of densitometer sampling system |
| CN112744885A (en) * | 2020-12-30 | 2021-05-04 | 中广核核电运营有限公司 | Demineralized water degassing system and demineralized water degassing method |
-
2020
- 2020-12-30 CN CN202011626573.7A patent/CN112744885A/en active Pending
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2021
- 2021-09-09 WO PCT/CN2021/117530 patent/WO2022142457A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5383958A (en) * | 1994-02-09 | 1995-01-24 | Westinghouse Electric Corporation | Deaeration system |
| JP2003164860A (en) * | 2001-11-29 | 2003-06-10 | Sasakura Engineering Co Ltd | Method for separating volatile organic compound in waste water |
| CN101430940A (en) * | 2007-11-06 | 2009-05-13 | 秦山核电公司 | Evacuation liquid-filling apparatus for capillary |
| CN107387364A (en) * | 2017-08-25 | 2017-11-24 | 康沣生物科技(上海)有限公司 | A kind of vacuum system |
| CN108529545B (en) * | 2018-04-04 | 2019-12-03 | 中广核核电运营有限公司 | Transmitter evacuation liquid-filling system and method |
Non-Patent Citations (1)
| Title |
|---|
| 泰山核电有限公司等编: "《自主创新 跨越发展 方家山核电工程建设经验汇编 上》", 31 October 2015, 中国原子能出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022142457A1 (en) * | 2020-12-30 | 2022-07-07 | 中广核核电运营有限公司 | Demineralized water deaeration system and demineralized water deaeration method |
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| WO2022142457A1 (en) | 2022-07-07 |
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