CN220020623U - Cooling water expansion water tank dosing system of high-temperature gas cooled reactor nuclear island equipment - Google Patents
Cooling water expansion water tank dosing system of high-temperature gas cooled reactor nuclear island equipment Download PDFInfo
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- CN220020623U CN220020623U CN202321593080.7U CN202321593080U CN220020623U CN 220020623 U CN220020623 U CN 220020623U CN 202321593080 U CN202321593080 U CN 202321593080U CN 220020623 U CN220020623 U CN 220020623U
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- pipeline
- cooling water
- inlet
- nuclear island
- communicated
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 239000000498 cooling water Substances 0.000 title claims abstract description 52
- 238000005070 sampling Methods 0.000 claims description 23
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- 239000003657 drainage water Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 abstract description 14
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000012377 drug delivery Methods 0.000 description 3
- 229940079593 drug Drugs 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
Abstract
The embodiment of the disclosure provides a cooling water expansion water tank dosing system of a high-temperature gas cooled reactor nuclear island device, which comprises a main conveying pipeline, a secondary conveying pipeline, a mixing pipeline, an expansion water tank, a circulating pump group and a dosing pipeline; the inlet of the main conveying pipeline is communicated with the outlet of the cooling water system of the nuclear island equipment and the heat exchanger of the water system of the plant, the inlet of the secondary conveying pipeline is communicated with the outlet of the expansion water tank, and the outlets of the secondary conveying pipeline and the dosing pipeline are both communicated with the inlet of the circulating pump group; the inlet of the mixing pipeline is communicated with the outlet of the circulating pump set, and the outlet of the mixing pipeline is communicated with the inlet of the expansion water tank. Through main conveying pipeline, secondary conveying pipeline, hybrid pipeline, expansion tank, circulating pump group and the dosing pipeline that set up, can effectively control expansion tank and the quality of water in the pipeline along the line, guarantee its interior water quality medicament concentration up to standard, prevent corrosion.
Description
Technical Field
The embodiment of the disclosure belongs to the technical field of high-temperature gas cooled reactors, and particularly relates to a cooling water expansion water tank dosing system of a high-temperature gas cooled reactor nuclear island device.
Background
The cooling water system of the nuclear island equipment of the high-temperature gas cooled reactor nuclear power station demonstration engineering of the nuclear power plant is an intermediate isolation system, belongs to a radioactive possible contamination system, and can ensure that radioactive substances of the cooled equipment do not enter the environment. The cooling water system of the nuclear island equipment provides cooling water for a main helium fan, a shielding cooling water system and the like, and heat carrier is transferred to a water system of a factory through a heat exchanger and finally is dissipated to the atmosphere through a cooling tower.
The expansion water tank is arranged outside the reactor factory building and is used for absorbing the water volume change of the cooling water system of the nuclear island equipment and providing a suction pressure head for the circulating pump. In the running process, the medium in the expansion water tank does not participate in the system circulation, and the water quality cannot be effectively controlled; when the chemical in the medium is gradually consumed, the water quality is in a low concentration state for a long time, and the corrosion prevention control of the expansion water tank and the pipelines along the line is very unfavorable.
Disclosure of Invention
The embodiment of the disclosure aims at least solving one of the technical problems existing in the prior art and provides a cooling water expansion water tank dosing system of a high-temperature gas cooled reactor nuclear island device.
The embodiment of the disclosure provides a cooling water expansion water tank dosing system of a high-temperature gas cooled reactor nuclear island device, which comprises a main conveying pipeline, a secondary conveying pipeline, a mixing pipeline, an expansion water tank, a circulating pump group and a dosing pipeline;
the inlet of the main conveying pipeline is communicated with the outlet of the cooling water system of the nuclear island equipment and the heat exchanger of the water system of the plant, the inlet of the secondary conveying pipeline is communicated with the outlet of the expansion water tank, and the outlets of the secondary conveying pipeline and the dosing pipeline are both communicated with the inlet of the circulating pump group; wherein,
the inlet of the mixing pipeline is communicated with the outlet of the circulating pump set, and the outlet of the mixing pipeline is communicated with the inlet of the expansion water tank.
Optionally, a first control valve is connected in series on the mixing pipeline.
Optionally, a second control valve is connected in series on the dosing pipeline.
Optionally, the circulating pump group comprises a plurality of circulating pumps connected in parallel.
Optionally, the drug adding system further comprises a sampling pipeline;
and the inlet of the sampling pipeline is communicated with the outlet of the circulating pump group.
Optionally, a sampling valve is connected in series on the sampling pipe.
Optionally, the dosing system further comprises a hydrophobic water collection tank;
the inlet of the drainage water collection tank corresponds to the outlet of the sampling pipeline.
Optionally, the drug adding system further comprises a return pipeline and a user pipeline group;
the user pipeline group is arranged on the return pipeline in series, the inlet of the return pipeline is communicated with the outlet of the main conveying pipeline, and the outlet of the return pipeline is communicated with the inlet of the cooling water system of the nuclear island equipment and the heat exchanger of the water system of the plant.
Optionally, the user pipeline group includes multiple user pipelines connected in parallel.
According to the cooling water expansion tank dosing system of the high-temperature air-cooled nuclear island equipment, provided by the embodiment of the disclosure, through the arranged main conveying pipeline, the secondary conveying pipeline, the mixing pipeline, the expansion tank, the circulating pump group and the dosing pipeline, the water quality in the expansion tank and the pipeline along the line can be effectively controlled, the concentration of the water agent in the expansion tank is ensured to reach the standard, and corrosion is prevented.
Drawings
Fig. 1 is a schematic structural diagram of a cooling water expansion tank dosing system of a high temperature gas cooled reactor nuclear island device according to an embodiment of the disclosure;
reference numerals illustrate:
100. the cooling water expansion water tank dosing system of the high-temperature gas cooled reactor nuclear island equipment; 200. a heat exchanger of a cooling water system of the nuclear island equipment and a heat exchanger of a water system of a factory; 300. a user pipeline group; 310. a user line; 110. a main conveying pipeline; 120. a secondary delivery line; 130. a mixing pipeline; 131. a first control valve; 140. an expansion tank; 150. a circulating pump group; 151. a circulation pump; 160. a dosing pipeline; 161. a second control valve; 170. a sampling pipeline; 171. a sampling valve; 180. a drain header tank; 190. and a return line.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail with reference to the accompanying drawings and detailed description.
As shown in fig. 1, a cooling water expansion tank dosing system 100 of a high temperature gas cooled reactor nuclear island device, wherein the dosing system 100 comprises a main conveying pipeline 110, a secondary conveying pipeline 120, a mixing pipeline 130, an expansion tank 140, a circulating pump group 150 and a dosing pipeline 160. The main conveying pipeline 110 is connected with the circulating pump set 150 in series, an inlet of the main conveying pipeline 110 is communicated with an outlet of the cooling water system of the nuclear island equipment and the heat exchanger 200 of the water system of the plant, an inlet of the secondary conveying pipeline 120 is communicated with an outlet of the expansion water tank 140, and outlets of the secondary conveying pipeline 120 and the dosing pipeline 160 are communicated with an inlet of the circulating pump set 150. Wherein the inlet of the mixing pipe 130 is communicated with the outlet of the circulating pump set 150, and the outlet of the mixing pipe 130 is communicated with the inlet of the expansion tank 140.
Specifically, as shown in fig. 1, the cooling water is circulated and conveyed by the outlet of the heat exchanger 200 of the cooling water system of the nuclear island equipment and the heat exchanger 200 of the plant water system through the main conveying pipeline 110 via the circulating pump group 150, and when the water quality in the expansion water tank 140 and the along-line pipeline is reduced, the on-line dosing of the system can be performed through the dosing pipeline 160. The medicine is added into the main conveying pipeline 110 via the medicine adding pipeline 160 and mixed with the cooling water, the cooling water mixed with the medicine is conveyed to the mixing pipeline 130 through the circulating pump group 150, then reaches the expansion water tank 140 through the mixing pipeline 130, and finally is conveyed to the main conveying pipeline 110 through the secondary conveying pipeline 120. The cooling water flow path after the medicament mixing is sequentially provided with a main conveying pipeline 110, a circulating pump set 150, a mixing pipeline 130, an expansion tank 140, a secondary conveying pipeline 120 and the main conveying pipeline 110, so that the circulating conveying of the cooling water after the medicament mixing is realized, the water quality in the expansion tank and the related pipelines along the line can be effectively controlled, the medicament concentration of the water in the expansion tank is ensured to reach the standard, and the expansion tank and the pipelines along the line can be prevented from being corroded.
It should be noted that, the circulating pump set 150 includes a plurality of circulating pumps 151 connected in parallel, and only one circulating pump 151 is required to operate in the working process of the dosing system 100. The provision of a plurality of circulation pumps 151 can improve the working stability of the drug delivery system 100, and when one circulation pump 151 fails during operation, the operation can be continued by switching to the rest of the circulation pumps.
It should be further noted that the mixing pipeline 130 is connected with a first control valve 131 in series, and the dosing pipeline 160 is connected with a second control valve 161 in series. The first control valve 131 and the second control valve 161 may be opened or closed as needed to control the circulation of the cooling water and the addition of the agent to the main transport line.
Illustratively, as shown in FIG. 1, the drug delivery system 100 further includes a sampling line 170. The inlet of the sampling line 170 communicates with the outlet of the circulation pump stack 150. The sampling pipe 170 is connected with a sampling valve 171.
As shown in fig. 1, when the water quality in the expansion tank 140 and along the line decreases, the second control valve 161 is opened and the chemical is added to the main delivery line 110 via the chemical adding line 160 for system on-line chemical adding. After the medicine is added, the second control valve 161 is closed, the first control valve 131 is opened, the cooling water after the medicine is mixed circulates in the main conveying pipeline 110, the circulating pump group 150, the mixing pipeline 130, the expansion water tank 140 and the secondary conveying pipeline 120, the sampling valve 171 is opened after the cooling water circulates for a period of time, and part of the cooling water after the medicine is mixed flows out of the sampling valve 171 through the sampling pipeline 170. The cooling water flowing out can be sampled and analyzed, if the water quality concentration reaches the standard, the water quality is qualified, and the first control valve 131 is closed to finish the circulation.
According to the high-temperature air-cooled nuclear island equipment cooling water expansion tank dosing system, through the sampling pipeline and the sampling valve, the expansion tank after adding the medicament and the water quality in the pipeline along the line can be checked, the water quality medicament concentration in the expansion tank is effectively ensured to reach the standard, and the corrosion phenomenon is avoided.
Further, the dosing system 100 further comprises a hydrophobic water collection tank 180. The inlet of the drain header 180 corresponds to the outlet of the sampling line 170. Through the drainage header tank that sets up, can collect the cooling water that flows from the sampling tube more effectively, make things convenient for the sample analysis.
Illustratively, the drug delivery system 100 further includes a return line 190 and a user line set 300. The user pipeline group 300 is connected in series to the return pipeline 190, an inlet of the return pipeline 190 is communicated with an outlet of the main conveying pipeline 110, and an outlet of the return pipeline 190 is communicated with an inlet of the cooling water system of the nuclear island equipment and the heat exchanger 200 of the water system of the plant.
Specifically, as shown in fig. 1, the cooling water is delivered from the outlet of the cooling water system of the nuclear island plant and the heat exchanger 200 of the water system of the plant through the main delivery pipeline 110 to the inlet of the return pipeline 190 via the circulation pump group 150, then flows through the user pipeline group 300 and is circulated back to the inlet of the heat exchanger 200 of the cooling water system of the nuclear island plant and the heat exchanger of the water system of the plant through the return pipeline 190. The agent concentration of the water quality of the cooling water in the circulation process reaches the standard through dosing, so that the water quality concentration in the expansion water tank and the pipeline along the line can reach the standard in the circulation process, and corrosion of a cooling water system of nuclear island equipment and a heat exchanger of a water system of a factory, the expansion water tank, a user pipeline group and other pipelines is avoided. Further, the user pipeline group 300 includes multiple user pipelines 310 connected in parallel, so that the cooling water with the water quality concentration reaching the standard can be simultaneously conveyed to different application environments requiring the cooling water, and the working efficiency is improved.
It should be noted that, when the downstream user pipeline group needs to be overhauled and isolated, the mixing pipeline can be used as a recirculation pipeline of the circulation pump group, so as to ensure that the circulation pump group can operate at a flow rate not lower than the minimum flow rate.
It is to be understood that the above embodiments are merely exemplary embodiments employed to illustrate the principles of the present disclosure, however, the present disclosure is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the disclosure, and are also considered to be within the scope of the disclosure.
Claims (9)
1. The dosing system of the cooling water expansion water tank of the high-temperature gas cooled reactor nuclear island equipment is characterized by comprising a main conveying pipeline, a secondary conveying pipeline, a mixing pipeline, an expansion water tank, a circulating pump group and a dosing pipeline;
the inlet of the main conveying pipeline is communicated with the outlet of the cooling water system of the nuclear island equipment and the heat exchanger of the water system of the plant, the inlet of the secondary conveying pipeline is communicated with the outlet of the expansion water tank, and the outlets of the secondary conveying pipeline and the dosing pipeline are both communicated with the inlet of the circulating pump group; wherein,
the inlet of the mixing pipeline is communicated with the outlet of the circulating pump set, and the outlet of the mixing pipeline is communicated with the inlet of the expansion water tank.
2. The cooling water expansion tank dosing system of a high temperature gas cooled reactor nuclear island device of claim 1, wherein the mixing pipeline is provided with a first control valve in series.
3. The cooling water expansion tank dosing system of high temperature gas cooled reactor nuclear island equipment of claim 1, wherein the dosing pipeline is provided with a second control valve in series.
4. The cooling water expansion tank dosing system of a high temperature gas cooled reactor nuclear island plant of claim 1, wherein the circulating pump stack comprises a plurality of circulating pumps connected in parallel.
5. The cooling water expansion tank dosing system for a nuclear island plant of a high temperature gas cooled reactor according to any one of claims 1 to 4, further comprising a sampling line;
and the inlet of the sampling pipeline is communicated with the outlet of the circulating pump group.
6. The cooling water expansion tank dosing system for a high temperature gas cooled reactor nuclear island device of claim 5, wherein the sampling pipe is provided with a sampling valve in series.
7. The high temperature gas cooled reactor nuclear island plant cooling water expansion tank dosing system of claim 5, further comprising a hydrophobic header tank;
the inlet of the drainage water collection tank corresponds to the outlet of the sampling pipeline.
8. The cooling water expansion tank dosing system of a high temperature gas cooled reactor nuclear island plant according to any one of claims 1 to 4, further comprising a return line and a user line set;
the user pipeline group is arranged on the return pipeline in series, the inlet of the return pipeline is communicated with the outlet of the main conveying pipeline, and the outlet of the return pipeline is communicated with the inlet of the cooling water system of the nuclear island equipment and the heat exchanger of the water system of the plant.
9. The cooling water expansion tank dosing system of a high temperature gas cooled reactor nuclear island plant of claim 8 wherein said customer line set comprises multiple customer lines connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321593080.7U CN220020623U (en) | 2023-06-21 | 2023-06-21 | Cooling water expansion water tank dosing system of high-temperature gas cooled reactor nuclear island equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321593080.7U CN220020623U (en) | 2023-06-21 | 2023-06-21 | Cooling water expansion water tank dosing system of high-temperature gas cooled reactor nuclear island equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN220020623U true CN220020623U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321593080.7U Active CN220020623U (en) | 2023-06-21 | 2023-06-21 | Cooling water expansion water tank dosing system of high-temperature gas cooled reactor nuclear island equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220020623U (en) |
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2023
- 2023-06-21 CN CN202321593080.7U patent/CN220020623U/en active Active
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