CN212967143U - Medium recovery device of automatic loop sampling device - Google Patents
Medium recovery device of automatic loop sampling device Download PDFInfo
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- CN212967143U CN212967143U CN202021218308.0U CN202021218308U CN212967143U CN 212967143 U CN212967143 U CN 212967143U CN 202021218308 U CN202021218308 U CN 202021218308U CN 212967143 U CN212967143 U CN 212967143U
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- 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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Abstract
The utility model belongs to the technical field of a pressurized water reactor nuclear power station return circuit operation, specifically disclose an automatic sampling device medium recovery unit of a return circuit, the device maintains discharge line, sample valve, isolating valve A, isolating valve B, isolating valve C, sample valve and sample instrument including other media and the instrument that retrieve value medium continuous discharge pipeline, continuous discharge. The utility model discloses a quality of water is better behind medium recovery unit recovery instrument, and the medium that satisfies the recovery requirement returns a return circuit through a return circuit medium recovery system to reach and reduce a return circuit medium and lose, reduce a return circuit moisturizing operation, energy saving and emission reduction's purpose.
Description
Technical Field
The utility model belongs to the technical field of a pressurized water reactor nuclear power station return circuit operation, concretely relates to an automatic sampling device medium recovery unit of a return circuit.
Background
The automatic sampling device system of the primary circuit of the pressurized water reactor nuclear power station comprises a plurality of automatic sampling cabinets, automatic sampling instruments for measuring parameters such as conductance, pH, dissolved oxygen, dissolved hydrogen and the like are respectively arranged in the cabinets, the media after automatic sampling are originally designed and discharged to a boron-containing hydrophobic collection system, and the media are recovered or directly discharged after distillation treatment.
In order to ensure real-time online monitoring of a primary circuit of a pressurized water reactor nuclear power station and facilitate an operator to monitor the water quality state of a primary circuit system in real time, the primary circuit automatic sampling device is always in an operating state in the power operating stage of the nuclear power station according to the requirements of system operating regulations. The continuous operation of the device causes the loss of partial primary loop media, and simultaneously, in order to maintain the water charge of the primary loop system, the media meeting the requirement of the primary loop water chemistry working condition needs to be additionally supplemented. The system state not only increases the complexity of operation, but also is not beneficial to energy conservation and emission reduction.
Disclosure of Invention
An object of the utility model is to provide an automatic sampling device medium recovery unit of a return circuit, this medium recovery unit return a return circuit through a return circuit medium recovery system, and quality of water is better behind the recovery instrument, satisfies the medium of retrieving the requirement to reach and reduce a return circuit medium and lose, reduce a return circuit moisturizing operation, energy saving and emission reduction's purpose.
Realize the utility model discloses the technical scheme of purpose: a medium recovery device of a loop automatic sampling device comprises a continuous discharge pipeline of recovered valuable medium, a maintenance discharge pipeline of other continuously discharged medium and instrument, a sampling valve, an isolation valve A, an isolation valve B, an isolation valve C and a sampling instrument, wherein the continuous discharge pipeline of the recovered valuable medium communicated with a recovered valuable medium outlet of the loop automatic sampling device is communicated with a loop medium recovery system through a pipeline, and the pipeline is provided with the isolation valve A; other continuously discharged media and instrument maintenance discharge pipelines which are communicated with other continuously discharged media outlets of a primary circuit automatic sampling device are communicated with the boron-containing hydrophobic collection system through pipelines, and the pipelines are provided with isolation valves C; an isolation valve B is arranged on a pipeline between the isolation valve A and the isolation valve C; the pipeline at the outlet of the valuable medium with recovery value of the continuous discharge pipeline of the valuable medium with recovery value is provided with a sampling valve and a sampling instrument communicated with the sampling valve.
Two inlets of the continuous discharge pipeline of the valuable medium are respectively communicated with the outlets of the valuable mediums with recovery of the two automatic sampling devices of the primary loop, and the outlet of the continuous discharge pipeline of the valuable medium with recovery is communicated with the inlet of the isolating valve A.
And the two inlets of the other continuously discharged media and instrument maintenance discharge pipelines are respectively communicated with the other continuously discharged media outlets of the two primary circuit automatic sampling devices, and the outlets of the other continuously discharged media and instrument maintenance discharge pipelines are communicated with the inlet of the isolation valve C.
The isolation valve B is positioned on a pipeline between the inlets of the isolation valve A and the isolation valve C.
The inlet of the sampling valve is close to the outlet of the continuous discharge pipeline of the recovered valuable medium, and the outlet of the sampling valve is communicated with the inlet of the sampling device.
And a water seal A is arranged on a pipeline between the isolating valve A and a loop medium recovery system.
And a water seal B is arranged on a pipeline between the isolating valve C and the boron-containing hydrophobic collection system.
The utility model has the advantages of: (1) the utility model discloses an automatic sampling device medium recovery unit of a return circuit provides one kind and will have the medium of retrieval and utilization to return a return circuit medium recovery system, and then return the device of a return circuit, when avoiding a return circuit medium to run off, reduces the processing and the emission of radioactive medium. (2) The utility model discloses a return circuit automatic sampling device medium recovery unit provides a auto-change over device, can be according to the requirement of system fortune dimension operating mode, handles or partial recycle with the whole emission of a return circuit automatic sampling device medium, has stopped a return circuit medium and has received the risk of pollution. (3) The utility model discloses an automatic sampling device medium recovery unit of a return circuit provides a sampling device, can be used for confirming whether the preselection medium has the recovery value. (4) The utility model discloses a return circuit automatic sampling device medium recovery unit has designed the water seal on medium discharge pipeline, has completely cut off automatic sampling cabinet and the boron-containing between hydrophobic collection system, the return circuit medium recovery system air space, has prevented that the radioactive gas medium from flowing between each system, has reduced potential radioactive air pollution risk. (5) The utility model discloses a return circuit automatic sampling device medium recovery unit provides a whole set of operation method flow, operates according to this flow and can reduce a return circuit moisturizing volume when reducing radioactive liquid waste treatment capacity, has reached energy saving and emission reduction's purpose. (6) A medium recovery device of a loop automatic sampling device can have a plurality of operation modes according to different operation conditions of the loop automatic sampling device. Under a continuous operation mode of a loop automatic sampling device, media with recovery value behind a selected loop automatic sampling instrument are sampled, and under the working condition that the media meet the water quality requirement after sampling confirmation, the media are recovered to a loop media recovery system through switching of an isolation valve and then returned to a loop main system to avoid loss of the media; meanwhile, other media without recovery value are discharged to a boron-containing drainage collecting system through the device of the utility model for collecting treatment, so that the media are prevented from returning to a primary loop system to influence the water quality of a loop; have behind the sample confirmation a return circuit automatic sampling instrument to retrieve under the unsatisfied standard requirement operating mode of value sample liquid quality of water, through switching the isolating valve, pass through all media the utility model discloses a device discharges to boron-containing hydrophobic collection system, collects the processing, avoids this part medium to return a return circuit main system, influences a return circuit quality of water. Under a return circuit automatic sampling instrument maintains the operating mode, through switching the isolating valve, pass through all media the utility model discloses a device discharges to boron-containing hydrophobic collection system, collects the processing, and the medium that receives the pollution when avoiding the instrument to maintain returns a return circuit, influences a return circuit quality of water. Under the condition that a loop automatic sampling instrument is shut down, all isolation valves are closed, the loop automatic sampling instrument, a loop medium recovery system and a boron-containing hydrophobic collection system are isolated, and free flow of radioactive gaseous or liquid media among the systems is avoided.
Drawings
Fig. 1 is a schematic structural view of a medium recycling device of a loop automatic sampling device provided by the present invention.
In the figure: 1-a loop automatic sampling device; 2-continuous discharge line of the valuable medium; 3-continuous discharge of other media and instrumentation maintenance discharge lines; 4-a sampling valve; 5-isolation valve A; 6-isolation valve B; 7-isolation valve C; 8-water seal A; 9-water seal B; 10-a loop medium recovery system; 11-a boron-containing hydrophobic collection system; 12-sampling instrument.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model provides a return circuit automatic sampling device medium recovery unit, the device is including setting up two return circuit automatic sampling device 1 and a return circuit medium recovery system 10, contain the continuous discharge line 2 of valuable medium of recovery between the boron-containing hydrophobic collection system 11, other mediums and the instrument of continuous discharge maintain discharge line 3, sample valve 4, isolating valve A5, isolating valve B6, isolating valve C7, water seal A8, water seal B9 and be used for the sample valve 4 and the sampling instrument 12 of sample. The valuable medium outlets of the two primary loop automatic sampling devices 1 are respectively communicated with two inlets of a valuable medium continuous discharge pipeline 2, the outlet of the valuable medium continuous discharge pipeline 2 is communicated with the inlet of an isolation valve A5 through a pipeline, the outlet of the isolation valve A5 is communicated with the medium inlet of a primary loop medium recovery system 10 through a pipeline, and a water seal A8 is arranged on the pipeline. The other medium outlets of the two primary loop automatic sampling devices 1 are respectively communicated with two inlets of other continuously discharged medium and instrument maintenance discharge pipelines 3, the outlets of the other continuously discharged medium and instrument maintenance discharge pipelines 3 are communicated with the inlet of an isolation valve C7 through pipelines, the outlet of the isolation valve C7 is communicated with the medium inlet of the boron-containing hydrophobic collection system 11 through pipelines, and water seals B9 are arranged on the pipelines. The inlet of the sampling valve 4 is communicated with the pipeline between the outlet of the continuous discharge pipeline 2 of the recovered valuable mediums and the isolation valve A5 through a pipeline, and the outlet of the sampling valve 4 is communicated with the inlet of the sampling device 12 through a pipeline. One end of isolation valve B6 is in communication with the inlet of isolation valve a5 by way of a line, and the other end of isolation valve B6 is in communication with the inlet of isolation valve C7 by way of a line. And the inlet of sampling valve 4 is adjacent to the outlet of continuous discharge line 2 for recovered valuable medium, and isolation valve B6 is adjacent to isolation valve a 5.
The water seal A8 is intended to prevent uncontrolled flow of radioactive gas between the primary media recovery system 10 and the primary automatic sampling device 1, which could lead to radioactive diffusion. The water seal a9 is intended to prevent uncontrolled flow of radioactive gas between the boron-containing hydrophobic collection system 11 and the primary automatic sampling device 1, which could lead to radioactive diffusion. The sampling meter 12 is a manual temporary sampling meter.
As shown in fig. 1, the present invention provides a medium recycling method for a loop automatic sampling device, which comprises the following steps:
step 1.1, closing an isolation valve A5, opening an isolation valve C7, an isolation valve B6 and a sampling valve 4, sampling the valuable medium which flows out of a primary loop automatic sampling device 1 by a sampling instrument 12, and then closing the sampling valve 4; and judging whether the sampling result meets the requirement of the primary loop water quality or not, thereby judging to execute the step 1.2 or the step 1.3. The method comprises the following steps:
under the normal operation condition of the primary circuit automatic sampling device 1, closing the isolation valve A5, opening the isolation valve C7, opening the isolation valve B6 to a certain opening degree according to the sampling requirement, and continuously discharging the recovered valuable medium flowing out of the primary circuit automatic sampling device 1 through the recovered valuable medium discharge pipeline 2; the valuable medium flows into a pipeline between the isolating valve A5 and the valuable medium continuous discharge pipeline 2, the sampling valve 4 is opened, and the sampling instrument 12 samples the valuable medium in the pipeline; and (4) closing the sampling valve 4, if the sampling result meets the requirement of the primary loop water quality, switching to the step 1.2, and if the sampling result does not meet the requirement of the primary loop water quality, switching to the step 1.3.
The medium with the recycling value in the embodiment is a medium flowing out of the automatic primary circuit sampling device after the conductance meter and the hydrogen meter. The other medium discharged continuously is the medium flowing out of the primary automatic sampling device after the pH meter and the oxygen meter in the embodiment.
And judging whether the sampling result meets the requirement of the primary loop water quality, wherein reactors with different designs have clear requirements on various indexes of the primary loop water quality, and the judgment principle is determined according to different reactor designs. In this embodiment, the principle of determining whether the sampling result satisfies the requirement of the loop water quality is as follows: (1) when the primary loop water quality index in the sampling result of the sampling instrument 12 meets the following requirements, the oxygen content is more than or equal to 650mg/L, the hydrogen content is less than or equal to 0.01mg/L, the chlorine content is less than or equal to 50mg/L, and the sampling result meets the primary loop water quality requirement; (2) otherwise, the sampling result does not meet the requirement of the primary loop water quality.
Step 1.2, opening an isolation valve A5, closing an isolation valve B6, keeping an isolation valve C7 in an open state, and enabling the valuable medium and other continuously discharged media flowing out of the primary automatic sampling device 1 to enter a primary medium recovery system 10 and a boron-containing hydrophobic collection system 11 respectively. The method comprises the following steps:
isolation valve a5 is opened and isolation valve B6 is closed while isolation valve C7 remains open. The recovered valuable medium from the automatic primary sampling device 1 flows through the recovered valuable medium continuous discharge line 2 and then enters the primary medium recovery system 10 through the opened isolation valve a5 and the water seal A8. The other medium continuously discharged from the automatic sampling device 1 flows through the other medium continuously discharged and the meter maintenance discharge line 3, and then enters the boron-containing hydrophobic collection system 11 through an opened isolation valve C7 and a water seal B9.
Step 1.3, closing the isolation valve A5, opening the isolation valve B6, keeping the isolation valve C7 in an open state, and enabling the recovered valuable medium and other continuously discharged media flowing out of the primary automatic sampling device 1 to enter the boron-containing hydrophobic collection system 11. The method comprises the following steps:
isolation valve a5 is closed and isolation valve B6 is opened. The recovered valuable medium flowing out of a primary automatic sampling device 1 flows through a recovered valuable medium continuous discharge pipeline 2 and then flows through an opened isolation valve B6, an isolation valve C7 and a water seal B9 to enter a boron-containing hydrophobic collection system 11. The other medium continuously discharged from the automatic sampling device 1 flows through the other medium continuously discharged and the meter maintenance discharge line 3, and then flows through the opened isolation valve C7 and the water seal B9 into the boron-containing hydrophobic collection system 11.
the sampling valve 4, the isolation valve A5 are closed, the isolation valve B6 is opened, the isolation valve C7 is opened, and the valuable recovery medium and other continuously discharged media flowing out of the automatic sampling device 1 enter the boron-containing hydrophobic collection system 11. The method comprises the following steps:
sample valve 4 was closed, isolation valve a5 was closed, isolation valve B6 was opened, and isolation valve C7 was opened. The recovered valuable medium flowing out of a primary automatic sampling device 1 flows through a recovered valuable medium continuous discharge pipeline 2 and then flows through an opened isolation valve B6, an isolation valve C7 and a water seal B9 to enter a boron-containing hydrophobic collection system 11. The other medium continuously discharged from the automatic sampling device 1 flows through the other medium continuously discharged and the meter maintenance discharge line 3, and then flows through the opened isolation valve C7 and the water seal B9 into the boron-containing hydrophobic collection system 11.
The step 2.1 can avoid medium pollution caused by the maintenance working condition of the instrument, and ensures the water quality of a loop medium.
And 3, isolating the primary circuit automatic sampling device 1 from a primary circuit medium recovery system 10 and a boron-containing hydrophobic collection system 11 under the condition that the primary circuit automatic sampling device 1 is stopped to avoid medium flow. The method comprises the following steps:
sample valve 4 was closed, isolation valve a5 was closed, isolation valve B6 was closed, and isolation valve C7 was closed. At this time, no medium flows out from the primary automatic sampling device 1, so that no medium enters the primary medium recovery system 10 and the boron-containing hydrophobic collection system 11 through the primary automatic sampling device medium recovery device, the primary automatic sampling device 1 is isolated from the primary medium recovery system 10 and the boron-containing hydrophobic collection system 11, and free flow of radioactive gaseous or liquid media among the systems is avoided.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (7)
1. A kind of return circuit automatic sampling device medium recovery unit, characterized by that: the device comprises a continuous discharge pipeline (2) for the recovered valuable medium, a continuous discharge pipeline (3) for other continuously discharged media and instruments, a sampling valve (4), an isolation valve A (5), an isolation valve B (6), an isolation valve C (7) and a sampling instrument (12), wherein the continuous discharge pipeline (2) for the recovered valuable medium, which is communicated with a recovered valuable medium outlet of a loop automatic sampling device (1), is communicated with a loop medium recovery system (10) through a pipeline, and the pipeline is provided with the isolation valve A (5); the other continuously discharged media and instrument maintenance discharge pipeline (3) which is communicated with the other continuously discharged media outlet of the primary loop automatic sampling device (1) is communicated with the boron-containing hydrophobic collection system (11) through a pipeline, and an isolation valve C (7) is arranged on the pipeline; an isolation valve B (6) is arranged on a pipeline between the isolation valve A (5) and the isolation valve C (7); the pipeline at the outlet of the valuable medium with recovery value of the continuous discharge pipeline (2) of the valuable medium with recovery value is provided with a sampling valve (4) and a sampling instrument (12) communicated with the sampling valve (4).
2. A loop automatic sampling device media recovery device as defined in claim 1, wherein: two inlets of the continuous discharge pipeline (2) for the valuable medium are respectively communicated with the outlets of the valuable mediums with recovery of the two loop automatic sampling devices (1), and the outlet of the continuous discharge pipeline (2) for the valuable medium with recovery is communicated with the inlet of the isolating valve A (5).
3. A loop automatic sampling device media recovery device as defined in claim 2, wherein: and two inlets of the other continuously discharged media and instrument maintenance discharge pipeline (3) are respectively communicated with other continuously discharged media outlets of the two primary circuit automatic sampling devices (1), and an outlet of the other continuously discharged media and instrument maintenance discharge pipeline (3) is communicated with an inlet of an isolation valve C (7).
4. A loop automatic sampling device media recovery device according to claim 3, wherein: the isolation valve B (6) is positioned on a pipeline between the inlets of the isolation valve A (5) and the isolation valve C (7).
5. A loop automatic sampling device media recovery device according to claim 4, wherein: the inlet of the sampling valve (4) is close to the outlet of the continuous discharge pipeline (2) of the recovered valuable medium, and the outlet of the sampling valve (4) is communicated with the inlet of the sampling instrument (12).
6. A loop automatic sampling device media recovery device according to claim 5, wherein: and a water seal A (8) is arranged on a pipeline between the isolating valve A (5) and a loop medium recovery system (10).
7. A loop automatic sampling device media recovery device according to claim 6, wherein: and a water seal B (9) is arranged on a pipeline between the isolating valve C (7) and the boron-containing hydrophobic collection system (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021218308.0U CN212967143U (en) | 2020-06-28 | 2020-06-28 | Medium recovery device of automatic loop sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021218308.0U CN212967143U (en) | 2020-06-28 | 2020-06-28 | Medium recovery device of automatic loop sampling device |
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| Publication Number | Publication Date |
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| CN212967143U true CN212967143U (en) | 2021-04-13 |
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| CN202021218308.0U Active CN212967143U (en) | 2020-06-28 | 2020-06-28 | Medium recovery device of automatic loop sampling device |
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