CN214671846U - Marine spraying system combining active and passive - Google Patents
Marine spraying system combining active and passive Download PDFInfo
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- CN214671846U CN214671846U CN202120648765.1U CN202120648765U CN214671846U CN 214671846 U CN214671846 U CN 214671846U CN 202120648765 U CN202120648765 U CN 202120648765U CN 214671846 U CN214671846 U CN 214671846U
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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 discloses a marine spraying system that can move and passive combine together, including gas cylinder, spray the water storage tank, the electric cabinet, spray water storage tank export isolation valve, move the active system starting valve, passive system starting valve and shower, gas cylinder's export is through pipeline and the entry linkage that sprays the water storage tank, the exit pipe-line installation that sprays the water storage tank has the water storage tank export isolation valve that sprays, move the active system starting valve and the passive system starting valve entry all through the pipeline with spray the exit linkage that the water storage tank exported the isolation valve, move the active system starting valve and all be connected with the shower through the pipeline with the export of the passive system starting valve, the shower is installed in the reactor cabin inside and is provided with the shower head. The utility model provides a marine spraying system that can move and the passive combination together can both realize the effective condensation to piling under-deck steam to various unexpected condition to the temperature and the pressure that maintain to pile under-deck ensure to pile under-deck structural integrity at normal scope.
Description
Technical Field
The utility model relates to a marine equipment technical field that sprays especially relates to a marine spraying system that can move and the passive combination of moving.
Background
When a loss of coolant accident or a rupture accident of a main steam pipeline in a reactor cabin occurs on the offshore floating platform, high-temperature and high-pressure coolant or steam is released into the reactor cabin, so that the temperature and the pressure in the reactor cabin are increased sharply, if the temperature and the pressure are not reduced in time, the air tightness in the reactor cabin is damaged, the pressure boundary is damaged, and radioactive substances are diffused to other cabins.
At present, most of common offshore floating platforms in all countries in the world adopt an active pump to drive spray water, when the temperature or the pressure of a reactor cabin exceeds an allowable value, cooling water is sprayed into the reactor cabin, steam generated by leaked working media is condensed, and the stirring and mixing of gas are increased, so that the temperature and the pressure in the reactor cabin are restored to normal ranges. However, the active spraying system must be provided with a safety-level emergency power supply, has strong dependence on the supply of external power supplies such as electric power and the like and the operation of an operator, and cannot be put into operation and realize short-term and long-term cooling of the reactor cabin when the reactor loss of coolant accident or the main steam pipeline rupture accident is superimposed on the whole ship power-off accident and other working conditions.
Some nuclear power generating units adopt passive containment cooling systems, spray cooling steel containment through the high-order ability that sets up on shielding factory building dependence gravity spraying case, but it is not strong to marine floating platform suitability: firstly, the passive containment cooling system cools the containment through cooling the outer wall surface of the containment, and the heat transfer efficiency of the passive containment cooling system is far lower than the condensation heat transfer of steam in the containment by directly contacting spray liquid drops; secondly, the height of the offshore floating platform is limited, if a sufficient driving pressure head is required to be obtained, the arrangement of the high-level movable spraying box needs to be high enough, and the high-level movable spraying box occupies large total platform resources; thirdly, the offshore floating platform usually adopts a square reactor, the system design is complex due to the fact that the outer wall surface of the reactor is cooled, and the flow direction of cooling water is not easy to control.
Therefore, it is necessary to design a marine spraying system combining active and passive, which can effectively condense steam in the reactor cabin when a reactor loss of coolant accident, a main steam pipeline rupture accident, a reactor loss of coolant accident or a main steam pipeline rupture accident superimposed with a whole-ship power-off accident occur, and the like, so as to maintain the temperature and pressure in the reactor cabin within a normal range, ensure the structural integrity of the reactor cabin, and enable the operation of the marine nuclear power device and the marine floating platform to have higher safety and reliability.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a marine spraying system that can move and the passive combination, aim at can both realizing the effective condensation to piling under-deck steam to various unexpected condition, maintain the temperature and the pressure of piling under-deck at normal range, ensure to pile under-deck structural integrity, make marine nuclear power device and marine floating platform's operation have higher security and reliability.
In order to realize the aim, the utility model provides a marine spraying system combining active and passive, which comprises a high-pressure gas cylinder, a spraying water storage tank, an electric cabinet, a spraying water storage tank outlet isolation valve, an active system starting valve, a passive system starting valve and a spraying pipe, wherein,
the export of high-pressure gas cylinder passes through the pipeline and sprays the access connection of water storage tank, and the exit piping erection that sprays the water storage tank has the water storage tank export isolating valve that sprays, and active system start-up valve and the entry of passive system start-up valve all pass through the pipeline and spray the exit linkage of water storage tank export isolating valve, and active system start-up valve and the export of passive system start-up valve all pass through the pipeline and are connected with the shower, and the shower is installed in piling up the inside and be provided with the shower head of cabin.
Preferably, an active system spraying pump is further mounted on a pipeline between the active system starting valve and the spraying pipe, and the active system spraying pump is electrically connected with the electric cabinet.
Preferably, an active system regulating valve is further mounted on a pipeline between the active system spraying pump and the spraying pipe, and the active system regulating valve is electrically connected with the electric cabinet.
Preferably, an active system check valve is further mounted on a pipeline between the active system regulating valve and the spray pipe, and the active system check valve is electrically connected with the electric cabinet.
Preferably, a passive system check valve is further installed on a pipeline between the passive system starting valve and the spray pipe.
Preferably, the spraying water storage tank outlet isolation valve and the passive system starting valve are both electrically connected with an emergency power supply.
Preferably, the high-pressure gas cylinder is a high-pressure nitrogen cylinder.
Preferably, a high-pressure nitrogen pipeline pressure reducing valve is further mounted on a pipeline between the high-pressure gas cylinder and the spraying water storage tank.
Preferably, a safety valve is further arranged on the high-pressure gas cylinder.
The utility model provides an active marine spraying system who combines together with the non-activity has following beneficial effect:
1. by adopting a spraying system combining active and passive, the requirements of cooling and depressurizing in the reactor cabin when the nuclear power device for the ship, the offshore floating platform and the like are in the operating conditions of reactor loss of coolant accidents, main steam pipeline breakage accidents, reactor loss of coolant accidents or the superposition of the main steam pipeline breakage accidents and the whole ship power failure accidents and the like can be comprehensively covered;
2. when only a reactor loss of coolant accident occurs or a main steam pipeline breaks so that a whole ship power failure accident does not occur, the temperature and pressure in the reactor cabin can be reduced through the active spraying system, the flow of a loop is adjusted by changing the opening of the adjusting valve, and the temperature and pressure reduction rate is controlled;
3. after a reactor water loss accident or a main steam pipeline breakage accident is superimposed with a whole-ship power failure accident, a passive spraying system is adopted, and spray water of a spraying water storage tank is driven to enter a spraying pipe through the nitrogen pressure in a high-pressure nitrogen bottle, so that the dependence on external energy supply and operation of operators is eliminated, and the safety and reliability of a nuclear power device or an offshore floating platform are greatly improved;
4. the spraying water storage tank of the passive spraying system is driven by high-pressure nitrogen, the system is safe, stable and reliable, and the flow of the passive spraying system can be adjusted according to the spraying requirement of the reactor.
Drawings
Fig. 1 is a schematic structural diagram of the marine spraying system combining the active and passive functions of the present invention.
In the figure, 1-electric cabinet, 2-high-pressure nitrogen cylinder, 3-high-pressure nitrogen pipeline pressure reducing valve, 4-spray water storage tank, 5-safety valve, 6-spray water storage tank outlet isolation valve, 7-passive system starting valve, 8-passive system check valve, 9-active system starting valve, 10-active system spray pump, 11-active system regulating valve, 12-active system check valve, 13-spray pipe, 14-spray head, 15-reactor cabin.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, in the preferred embodiment, a marine spray system combining active and passive functions comprises a high-pressure gas cylinder, a spray water storage tank 4, an electric cabinet 1, a spray water storage tank outlet isolation valve 6, an active system starting valve 9, a passive system starting valve 7 and a spray pipe 13 (the spray pipe 13 can be provided with a plurality of spray pipe systems), wherein,
the export of high-pressure gas cylinder passes through the pipeline and sprays the access connection of water storage tank 4, the exit piping erection that sprays water storage tank 4 has the water storage tank export isolating valve 6 that sprays, the exit piping erection valve 9 of active system and the 7 entry of passive system start-up valve all pass through the pipeline and spray the exit linkage of water storage tank export isolating valve 6, the export of active system start-up valve 9 of active system and the 7 non-active system start-up valve all is connected with shower 13 through the pipeline, shower 13 is installed in piling cabin 15 inside and is provided with shower 14 (shower 14 can set up a plurality ofly).
Further, an active system spraying pump 10 is further installed on a pipeline between the active system starting valve 9 and the spraying pipe 13, and the active system spraying pump 10 is electrically connected with the electric cabinet 1.
Furthermore, an active system regulating valve 11 is further installed on a pipeline between the active system spraying pump 10 and the spraying pipe 13, and the active system regulating valve 11 is electrically connected with the electric cabinet 1. The opening degree of the active system regulating valve 11 is regulated through the electric cabinet 1, so that the aim of controlling the cooling and depressurizing rate in the reactor cabin 15 is fulfilled.
Furthermore, an active system check valve 12 is further mounted on a pipeline between the active system regulating valve 11 and the spray pipe 13, and the active system check valve 12 is electrically connected with the electric cabinet 1.
Further, a passive system check valve 8 is further installed on a pipeline between the passive system starting valve 7 and the spray pipe 13. The spraying water storage tank outlet isolation valve 6 and the passive system starting valve 7 are both electrically connected with an emergency power supply.
In this embodiment, the high-pressure gas cylinder is a high-pressure nitrogen cylinder 2. The nitrogen is low in cost, safe and not easy to explode.
Further, a high-pressure nitrogen pipeline reducing valve 3 is further installed on a pipeline between the high-pressure gas cylinder and the spraying water storage tank 4. The high-pressure nitrogen is stored in a high-pressure nitrogen cylinder 2, is decompressed by a high-pressure nitrogen pipeline decompression valve 3 and is communicated with the nitrogen space at the upper part of the spraying water storage tank 4, so that the nitrogen space at the upper part of the spraying water storage tank 4 is ensured to keep a certain pressure. In addition, a safety valve 5 is also arranged on the high-pressure gas cylinder.
The marine spraying system combining the active and the passive has a standby state, an active state and a passive state.
(1) And a standby state.
During normal operation of the nuclear power system, no steam needs to condense in the reactor bay 15, so there is no need to start the system, at which point the sprinkler system is in a standby state. The outlet isolation valve 6 of the spray water storage tank is in a closed state, the starting valve 9 of the active system, the spray pump 10 of the active system and the regulating valve 11 of the active system in the active spray system are in a closed state, and the check valve 12 of the active system is in an open state; a safety valve 5 and a passive system starting valve 7 in the passive spraying system are in a closed state, and a passive system check valve 8 is in an open state; and controlling the electric cabinet 1 to be in a working state.
(2) Under the conditions of loss of coolant accident of reactor or rupture accident of main steam pipeline, no power failure accident of whole ship, the spraying system is automatically switched from standby state to active working state, the active spraying water storage tank outlet isolation valve 6, the active system starting valve 9, the active system regulating valve 11 and the active system spraying pump 10 are automatically opened in sequence, the spraying water is driven by the active system spraying pump 10 after passing through the spraying water storage tank 4, the spraying water storage tank outlet isolation valve 6 and the active system starting valve 9, the main stream enters the spraying pipe 13 after passing through the active system regulating valve 11 and the active system check valve 12, the spraying water sprays cooling water into the reactor cabin 15 through a plurality of spraying heads 14 on the spraying pipe 13, and the steam released by loss of coolant accident of reactor or rupture accident of main steam pipeline in the reactor cabin 15 is condensed by direct contact; and the temperature and the pressure in the reactor cabin 15 are monitored, and the opening of the active system regulating valve 11 is regulated through the electric cabinet 1, so that the aim of controlling the cooling and depressurizing rate in the reactor cabin 15 is fulfilled.
(3) Reactor water loss accident or main steam pipeline rupture accident, and ship-borne power failure accident
When the reactor loses water or the main steam pipeline breaks or the whole ship is in power failure, the spraying system is automatically switched to a passive working state from a standby state. Open in proper order through emergency power and spray water storage tank export isolating valve 6, the passive system starting valve 7, nitrogen gas gets into through high-pressure nitrogen gas pipeline relief pressure valve 3 among the high-pressure nitrogen gas bottle 2 and sprays water storage tank 4, the high-pressure nitrogen gas drive sprays the cooling water among the water storage tank 4 and passes through and spray water storage tank export isolating valve 6, the passive system starting valve 7 and the passive system check valve 8 back of entering shower 13, spray water sprays the cooling water to the reactor cabin 15 in through a plurality of shower heads 14 on the shower 13, through the steam of the interior because reactor water loss accident or main steam pipeline rupture accident release of direct contact condensation reactor cabin 15. High-pressure nitrogen gas and pile 15 internal pressure temperature in cabin in the water storage tank 4 are sprayed in real-time supervision, when spraying the interior nitrogen gas pressure of water storage tank 4 and unsatisfied the drive power that sprays the requirement, adjust high-pressure nitrogen gas pipeline relief pressure valve 3, and the control sprays the pressure of water storage tank 4 middle and upper portion space high-pressure nitrogen gas, realizes that the passive flow and the 15 cooling rate phase-matchs in the cabin of piling.
The marine spraying system combining the active and the passive has the following beneficial effects:
1. by adopting a spraying system combining active and passive, the requirements of cooling and depressurizing in the reactor cabin 15 when the nuclear power device for the ship, the offshore floating platform and the like are in the working conditions of reactor loss of coolant accidents, main steam pipeline breakage accidents, reactor loss of coolant accidents or the superposition of the main steam pipeline breakage accidents and the whole ship power failure accidents can be comprehensively covered;
2. when only a reactor loss of coolant accident occurs or a main steam pipeline breaks so that a whole ship power failure accident does not occur, the temperature and pressure in the reactor cabin 15 can be reduced through the active spraying system, the flow of a loop is adjusted by changing the opening of the adjusting valve, and the temperature and pressure reduction rate is further controlled;
3. after a reactor water loss accident or a main steam pipeline breakage accident is superimposed with a whole-ship power failure accident, a passive spraying system is adopted, and spraying water of the spraying water storage tank 4 is driven to enter the spraying pipe 13 through the nitrogen pressure in the high-pressure nitrogen cylinder 2, so that the dependence on external energy supply and operation of operators is eliminated, and the safety and reliability of the nuclear power device or the offshore floating platform are greatly improved;
4. the spraying water storage tank 4 of the passive spraying system is driven by high-pressure nitrogen, the system is safe, stable and reliable, and the flow of the passive spraying system can be adjusted according to the spraying requirement of the reactor 15.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. A marine spraying system combining active and passive is characterized by comprising a high-pressure gas cylinder, a spraying water storage tank, an electric cabinet, a spraying water storage tank outlet isolation valve, an active system starting valve, a passive system starting valve and a spraying pipe, wherein,
the export of high-pressure gas cylinder passes through the pipeline and sprays the access connection of water storage tank, and the exit piping erection that sprays the water storage tank has the water storage tank export isolating valve that sprays, and active system start-up valve and the entry of passive system start-up valve all pass through the pipeline and spray the exit linkage of water storage tank export isolating valve, and active system start-up valve and the export of passive system start-up valve all pass through the pipeline and are connected with the shower, and the shower is installed in piling up the inside and be provided with the shower head of cabin.
2. The combined active and passive marine spray system of claim 1, further comprising an active system spray pump mounted in the conduit between the active system trigger valve and the spray pipe, the active system spray pump being electrically connected to the electrical cabinet.
3. The combined active and passive marine spray system of claim 2, further comprising an active system regulating valve mounted on the pipe between the active system spray pump and the spray pipe, the active system regulating valve being electrically connected to the electrical control box.
4. The combined active and passive marine sprinkler system of claim 3, further comprising an active system check valve mounted in the conduit between the active system regulator valve and the sprinkler pipe, the active system check valve being electrically connected to the electrical control box.
5. The combined passive and active marine sprinkler system according to claim 1, wherein a passive system check valve is further mounted in the conduit between the passive system activation valve and the sprinkler pipe.
6. The combined passive and active marine spray system of claim 5, wherein the spray tank outlet isolation valve and the passive system activation valve are electrically connected to an emergency power supply.
7. A combined kinetic and passive marine spray system according to claim 1 wherein the high pressure gas cylinder is a high pressure nitrogen cylinder.
8. The combined active and passive marine sprinkler system according to claim 7, wherein a high pressure nitrogen line pressure reducing valve is further installed in the conduit between the high pressure gas cylinder and the spray water storage tank.
9. The combined powered and non-powered marine sprinkler system according to any one of claims 1-8, wherein the high pressure gas cylinder is further provided with a safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648765.1U CN214671846U (en) | 2021-03-30 | 2021-03-30 | Marine spraying system combining active and passive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648765.1U CN214671846U (en) | 2021-03-30 | 2021-03-30 | Marine spraying system combining active and passive |
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| Publication Number | Publication Date |
|---|---|
| CN214671846U true CN214671846U (en) | 2021-11-09 |
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| CN202120648765.1U Active CN214671846U (en) | 2021-03-30 | 2021-03-30 | Marine spraying system combining active and passive |
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| CN (1) | CN214671846U (en) |
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2021
- 2021-03-30 CN CN202120648765.1U patent/CN214671846U/en active Active
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