CN115831403B - Cooling spray protection device for nuclear power station voltage stabilizer - Google Patents
Cooling spray protection device for nuclear power station voltage stabilizer Download PDFInfo
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- CN115831403B CN115831403B CN202310000099.4A CN202310000099A CN115831403B CN 115831403 B CN115831403 B CN 115831403B CN 202310000099 A CN202310000099 A CN 202310000099A CN 115831403 B CN115831403 B CN 115831403B
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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 invention discloses a cooling spray protection device for a nuclear power station voltage stabilizer, which comprises a voltage stabilizer main body, wherein the outer surface of the voltage stabilizer main body is sleeved with a sleeve; the water storage barrels are arranged at the tops of the two groups of support columns, the first water outlet pipe is arranged at the center of the bottom of each water storage barrel, symmetrically arranged connecting pipes are arranged at the top of each voltage stabilizer main body, the first water outlet pipe is provided with the first water delivery pipe on the inner surface, and the first power-off automatic reset electric valve is arranged on the outer surface of the first water delivery pipe; the tail end of one group of connecting pipes is provided with a first spray head, and the top wall of the voltage stabilizer main body is provided with symmetrically arranged temperature sensors. According to the cooling spraying device, the voltage stabilizer main body, the water storage barrel, the first power-off automatic reset electric valve and the first spray head are arranged, when the cooling spraying device is used, the first power-off automatic reset electric valve is in an open state in a power-off state, and then water in the water storage barrel can be sprayed into the voltage stabilizer main body through the first spray head under the action of gravity.
Description
Technical Field
The invention relates to the technical field of nuclear power station voltage regulators, in particular to a cooling spray protection device for a nuclear power station voltage regulator.
Background
The nuclear power station voltage stabilizer mainly builds pressure in a loop and maintains the pressure, compensates the volume change of the loop caused by temperature change, relieves the pressure fluctuation caused by temperature change, avoids the boiling of a coolant in a reactor, maintains the water vapor balance temperature in the voltage stabilizer through spraying and a heater, limits the pressure of the loop within a range, and has certain defects because the cooling spraying protection device for the existing nuclear power station voltage stabilizer has poor protection effect when in power-off use.
The existing cooling spray protection device has the following defects:
1. patent document relates to a high-efficient cooling intermediate layer inner loop spray set. The circulating spraying device comprises a cooling protective cover and a cooling water ring, wherein the cooling water ring is fixedly arranged in the cooling protective cover, a protective cover cooling water inlet pipe is connected to the cooling protective cover, a cooling water ring water inlet pipe is connected to the cooling water ring, protective cover cooling water is filled in the protective cover cooling water inlet pipe, and water ring cooling water is filled in the cooling water ring water inlet pipe. The circulating spraying device disclosed by the invention has the advantages of simple structure, energy conservation, environmental protection, cooling, square billet cracking prevention, qualification rate improvement and good water ring protection effect, but the circulating spraying device disclosed by the publication mainly takes into consideration how to save energy and protect environment, and does not take the problem of poor cooling protection effect of the existing cooling spraying device of the voltage stabilizer of the nuclear power station when power is off into consideration, so that the practicability is poor;
2. patent document relates to a continuous spraying adjustment method of a nuclear power station voltage stabilizer, comprising the following steps: limiting the minimum opening of a spray valve to a first opening in the process of starting a pressurized water reactor from a cold shutdown reactor to a hot shutdown reactor, wherein when the spray valve is positioned at the first opening, the temperature of the water outlet end of a spray pipeline is lower than the temperature of the water inlet end connected with the cold end of a loop, and the temperature difference of the two is less than 12 ℃; and when the pressurized water reactor is in thermal shutdown, adjusting the spray valve to the optimal continuous spray opening. According to the continuous spraying adjustment method for the nuclear power station voltage stabilizer, the adjustment time required by continuous spraying adjustment of the voltage stabilizer is reduced, if the boron content of cooling water in a loop is adjusted in the process from cold shutdown to hot shutdown, the boron content of cooling water in the voltage stabilizer is still consistent with that of cooling water in the loop, but the continuous spraying adjustment method for the nuclear power station voltage stabilizer in the above publication mainly considers how to make the boron content of cooling water in the voltage stabilizer consistent with that of cooling water in the loop, and does not consider the problem that the cooling spraying efficiency of the cooling spraying device of the conventional nuclear power station voltage stabilizer is low when in use, and the flexibility is poor;
3. patent document discloses a spraying cooling case is used in electric power protection pipe production, including box, spray subassembly, main water pipe and water pump, the box both sides are equipped with tubular product access & exit, main water pipe fixed mounting is in the box roof to spray the subassembly through the hose connection, the water pump is installed in the bottom half, spray subassembly fixed mounting in the box inside, and be central symmetry and set up three groups, spray the subassembly and contain the arctube, arctube one side is equipped with the hose connection, and the another side is equipped with multirow shower nozzle, every two be equipped with a row of pillar between the shower nozzle, be equipped with the spring ball in the pillar, the height of pillar is greater than the height of shower nozzle. The spray cooling box for producing the electric power protection pipe has a simple structure, can be suitable for cooling of different pipe diameters, provides supporting force for pipe cooling, and improves spray cooling efficiency, but the spray cooling box in the above publication mainly considers how to improve spray cooling efficiency, does not consider that the existing voltage stabilizer cooling spray device of the nuclear power station easily causes waste of water resources when in use, and has poor water saving effect;
4. patent document discloses a special voltage stabilizer and a pressure control system for a reactor irradiation test loop, wherein the voltage stabilizer comprises a voltage stabilizer body, a spray header assembly, an internal assembly, a fluctuation pipe and a heating element; wherein the spray header assembly is arranged at the top of the voltage stabilizer body; the inner assembly is arranged inside the pressure stabilizing lifting body to protect the inner wall and the guide heating element; the fluctuation pipe is led into the interior of the voltage stabilizer body from the lower part of the side wall of the voltage stabilizer body; the heating element is inserted into the voltage stabilizer from the bottom of the voltage stabilizer body. The special pressure stabilizer and the pressure control system for the reactor irradiation test loop in the above publication mainly control the loop pressure fluctuation through the pressure stabilizer, and do not consider the problem that the existing cooling spraying device of the nuclear power station pressure stabilizer does not have the liquid level monitoring function when in use.
Disclosure of Invention
The invention aims to provide a cooling spray protection device for a voltage stabilizer of a nuclear power station, which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the cooling spray protection device for the nuclear power station voltage stabilizer comprises a voltage stabilizer main body, wherein a supporting plate is arranged on the outer surface of the voltage stabilizer main body, and a sleeve is sleeved on the outer surface of the voltage stabilizer main body;
the top of the sleeve is provided with symmetrically arranged support columns, the tops of the two groups of support columns are provided with water storage tanks, the outer surfaces of the water storage tanks are provided with bearing plates, the bearing plates are positioned at the rear of the sleeve, the interiors of the water storage tanks are embedded with filter screen plates, a water outlet pipe I is arranged at the center of the bottom of the water storage barrel, symmetrically arranged connecting pipes are arranged at the top of the voltage stabilizer main body, a water conveying pipe I is arranged on the inner surface of the water outlet pipe I, and an automatic power-off reset electric valve I is arranged on the outer surface of the water conveying pipe I;
the tail end of one group of connecting pipes is provided with a first spray head, and the top wall of the voltage stabilizer main body is provided with symmetrically arranged temperature sensors.
Preferably, a second water outlet pipe is arranged at the bottom of the water storage barrel, the second water outlet pipe is arranged at the outer side of the first water outlet pipe, a second water delivery pipe is arranged at the bottom end of the second water outlet pipe, a first water inlet pipe which is symmetrically arranged is arranged at the top of the sleeve, the tail end of the second water delivery pipe is connected with the top end of the first water inlet pipe, an automatic power-off reset electric valve II is arranged on the outer surface of the second water delivery pipe, and an alarm is arranged at the top of the sleeve.
Preferably, the outer surface of the sleeve is provided with a drain pipe, the inner surface of the drain pipe is provided with a water pipe III, the outer surface of the water pipe III is provided with an electronic valve, and the electronic valve is normally closed.
Preferably, the storage tank is installed to one side outer wall of loading board, and the storage water tank is installed at the top of storage board, and inlet tube two is installed at the top of storage water tank, and the surface threaded connection of inlet tube two has the block, and the link is installed to the roof of block, and the inner surface of link installs pressure sensor, and the outer surface cover of link is hung and is installed the couple, and the outer surface of couple is installed the joint piece, and the haulage rope is installed to the bottom of joint piece, and the floater is installed to the tail end of haulage rope, and the weighting ball of evenly arranging has been placed to the inside of floater.
Preferably, one end of the first water pipe is connected with the top end of one group of connecting pipes, the first spray head is positioned in the pressure stabilizer main body, the temperature sensors are positioned on two sides of the first spray head, the bottom of the sleeve is provided with a clamping groove, the clamping groove is embedded with the supporting plate, and the sleeve is of a hollow structure;
the temperature sensor is electrically connected with the alarm, the alarm is positioned between one group of water inlet pipes I and the support columns, and the water inlet pipes I and the support columns are distributed at intervals;
the warning light is installed at the top of storage water tank, electric connection between warning light and the pressure sensor, and the floater can float at the surface of water, and after the water level in the storage water tank descends to certain degree, the inside weighting ball of floater can stimulate the haulage rope for the couple can exert pressure to the pressure sensor of link inboard.
Preferably, the water pump is installed at the top of storage water tank, and the water pump is located the centre of block and warning light, and the drinking-water pipe is installed to the input of water pump, and the one end of drinking-water pipe extends into the inside of storage water tank, and the conveyer pipe is installed to the output of water pump, and the one end of conveyer pipe is connected with the top of another group of connecting pipes, and the pressure release pipe takeover of symmetrical arrangement is installed at the top of stabiliser main part, and relief valve takeover and manometer are installed at the top of stabiliser main part, and the manometer is located the place ahead of relief valve takeover, and the relief valve takeover is located the centre of one of them a set of connecting pipes and one of pressure release pipe takeover, and another set of pressure release pipe takeover is located one side of another group of connecting pipe.
Preferably, the spray pipes are arranged at the tail ends of the other group of connecting pipes, the water storage pipes are arranged on the inner wall of the voltage stabilizer main body, the spray heads II which are uniformly arranged are arranged on the outer surfaces of the water storage pipes, and the tail ends of the spray pipes are connected with the outer surfaces of the water storage pipes.
Preferably, the inner wall of the voltage stabilizer main body is provided with a bottom head, a surge pipe connection pipe is arranged at the bottom center position of the bottom head, the top and the bottom of the bottom head are provided with electric heaters which are uniformly arranged, the electric heaters are positioned on the outer sides of the surge pipe connection pipes, the electric heaters are positioned below the spray heads II, and the bottom of the voltage stabilizer main body is provided with a supporting skirt.
Preferably, the cooling spray protection device is used as follows:
s1, before the cooling spray protection device is used, firstly, the voltage stabilizer main body is installed on a loop system through a supporting skirt, and the bearing plate is contacted with the ground, so that the bearing plate can play a certain supporting role on the water storage barrel;
s2, when the cooling spraying device is used, the interior of the pressure stabilizer main body is detected through a temperature sensor, when the temperature is too low, an electric heater is started, so that the electric heater can heat liquid entering the interior of the pressure stabilizer main body, the pressure index in the interior of the pressure stabilizer main body is monitored through a pressure meter to prevent the overpressure of a loop, and when the overpressure of the loop occurs, a safety valve is connected to the surface of a safety valve connecting pipe, and then steam in the pressure stabilizer main body can be discharged into a pressure relief box;
s3, in the spraying process, the floating ball in the water storage tank floats up and down along with the change of the water level, and when the water level in the water storage tank gradually drops, the floating ball also drops, so that the weighting ball can drive the traction rope downwards to pull the hook;
s4, when power is off, the first power-off automatic reset electric valve and the second power-off automatic reset electric valve on the outer surfaces of the first water conveying pipe and the second water conveying pipe are in an open state, so that water in the water storage barrel can be sprayed into the pressure stabilizer main body and flow into the sleeve through the first spray head under the action of gravity, and the sleeve can cool the peripheral part of the pressure stabilizer main body.
Preferably, in the step S2, the method further includes the following steps:
s21, when the temperature is too high, starting a water pump, pumping out water in the water storage tank through a water pumping pipe, conveying the water into one group of connecting pipes through a conveying pipe, conveying the water into the water storage pipe through a spraying pipe, spraying the water into the pressure stabilizer main body through a second spray nozzle, and therefore keeping water vapor balance in the pressure stabilizer main body through spraying and heating, and limiting the pressure of a loop within a range;
in the step S3, the method further includes the following steps:
s31, when the water level in the water storage tank drops to a threshold value, the floating ball is not lifted by buoyancy, at the moment, the hook can apply maximum pressure to the pressure sensor in the hanging ring under the action of the weighting ball, and at the moment, the warning lamp is lightened, so that relevant staff is reminded of timely adding water into the water storage tank;
in the step S4, the method further includes the following steps:
s41, through the arrangement of the first spray head, the inside of the voltage stabilizer main body can be cooled when power is off, the volume change of the compensation loop caused by temperature change is relieved, the pressure fluctuation caused by the temperature change is relieved, the condition that the coolant boils in the reactor after power off is avoided, the safety in use is improved, after power is on, the electronic valve can be opened, and then water in the sleeve can be conveyed into the storage device through the third water conveying pipe, so that the subsequent recycling is facilitated.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the cooling spraying device, the temperature inside the voltage stabilizer main body is monitored at all times through the temperature sensor when the cooling spraying device is used, the voltage stabilizer main body, the sleeve, the water storage barrel, the filter screen plate, the power-off automatic reset electric valve I, the connecting pipe, the spray head I and the temperature sensor are arranged, the power-off automatic reset electric valve I is in an open state in a power-off state, water in the water storage barrel flows into one group of connecting pipes through the water pipe under the action of gravity, and is sprayed inside the voltage stabilizer main body through the spray head I, so that the safety of the voltage stabilizer main body can be improved to a certain extent.
2. According to the invention, the water outlet pipe II, the water inlet pipe I, the water conveying pipe II, the power-off automatic reset electric valve II and the alarm are arranged, the power-off automatic reset electric valve II is also opened after power off, and at the moment, water in the water storage barrel enters the sleeve along the water conveying pipe II under the action of gravity, so that the sleeve can cool the outer surface of the voltage stabilizer main body, and the cooling efficiency is improved.
3. According to the invention, the drain pipe, the water pipe III and the electronic valve are arranged, so that the electronic valve is in a normally closed state when power is off, and is in an open state when power is on, water in the sleeve can be discharged through the drain pipe, and then the water in the sleeve can be conveyed into the storage device through the water pipe III, so that the subsequent recycling is facilitated.
4. According to the cooling spray protection device, the storage plate, the water storage tank, the water inlet pipe II, the cap, the hanging ring, the hook, the traction rope and the floating ball are arranged, when the cooling spray protection device is used, the floating ball in the water storage tank can float up and down along with the change of the liquid level, after the water level in the water storage tank drops to a threshold value, the floating ball can pull the traction rope downwards under the action of the weighting ball, so that the hook can apply maximum pressure to the pressure sensor on the inner surface of the hanging ring, and then the warning lamp is lightened, so that relevant staff is reminded of adding water into the water storage tank.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic plan assembly view of the water tank of the present invention;
FIG. 3 is a schematic diagram of an assembled structure of a water storage tank according to the present invention;
FIG. 4 is a schematic view of an assembled structure of the drain pipe of the present invention;
FIG. 5 is a schematic plan assembly structure of the water storage bucket of the present invention;
FIG. 6 is a schematic plan assembly view of a voltage regulator body according to the present invention;
fig. 7 is a schematic plan assembly structure of a second water pipe and a first water inlet pipe of the present invention;
fig. 8 is a flow chart of the operation of the present invention.
In the figure: 1. a voltage regulator main body; 2. a support plate; 3. a sleeve; 4. a clamping groove; 5. a support column; 6. a water storage bucket; 7. a filter screen plate; 8. a carrying plate; 9. a first water outlet pipe; 10. the power-off automatic reset electric valve I; 11. a water delivery pipe I; 12. a connecting pipe; 13. a first spray head; 14. a temperature sensor; 15. a second water outlet pipe; 16. a first water inlet pipe; 17. a water delivery pipe II; 18. a second electric valve capable of automatically resetting after power failure; 19. an alarm; 20. a drain pipe; 21. a water delivery pipe III; 22. an electronic valve; 23. a storage plate; 24. a water storage tank; 25. a water inlet pipe II; 26. capping; 27. hanging rings; 28. a hook; 29. a traction rope; 30. a floating ball; 31. a water pump; 32. a water pumping pipe; 33. a delivery tube; 34. the pressure relief pipe is connected; 35. a safety valve connecting pipe; 36. a pressure gauge; 37. a shower pipe; 38. a water storage pipe; 39. a second nozzle; 40. a bottom end enclosure; 41. an electric heater; 42. a surge pipe nipple; 43. supporting the skirt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, 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.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, 5, 6 and 8, an embodiment of the present invention is provided: a cooling spray protection device for a nuclear power station voltage stabilizer comprises a voltage stabilizer main body 1, a temperature sensor 14, a water pump 31 and a supporting skirt seat 43, wherein a supporting plate 2 is arranged on the outer surface of the voltage stabilizer main body 1, a sleeve 3 is sleeved on the outer surface of the voltage stabilizer main body 1, symmetrically arranged supporting columns 5 are arranged at the top of the sleeve 3, water storage barrels 6 are arranged at the tops of two groups of supporting columns 5, a bearing plate 8 is arranged on the outer surface of the water storage barrels 6, the bearing plate 8 is positioned behind the sleeve 3, a filter screen plate 7 is arranged in the water storage barrels 6 in a jogged mode, a water outlet pipe 9 is arranged at the center of the bottom of the water storage barrels 6, symmetrically arranged connecting pipes 12 are arranged at the top of the voltage stabilizer main body 1, a water conveying pipe 11 is arranged on the inner surface of the water outlet pipe 9, a power-off automatic reset electric valve 10 is arranged on the outer surface of the water conveying pipe 11, a spray head 13 is arranged at the tail end of one group of the connecting pipes 12, the top wall of the pressure stabilizer main body 1 is provided with symmetrically arranged temperature sensors 14, one end of a water pipe 11 is connected with the top end of one group of connecting pipes 12, a first spray head 13 is positioned in the pressure stabilizer main body 1, the temperature sensors 14 are positioned on two sides of the first spray head 13, the bottom of a sleeve 3 is provided with a clamping groove 4, the clamping groove 4 is embedded with a supporting plate 2, the sleeve 3 is of a hollow structure, the top of a water storage tank 24 is provided with a water pump 31, the water pump 31 is positioned between a cap 26 and a warning lamp, the input end of the water pump 31 is provided with a water suction pipe 32, one end of the water suction pipe 32 extends into the interior of the water storage tank 24, the output end of the water pump 31 is provided with a conveying pipe 33, one end of the conveying pipe 33 is connected with the top end of the other group of connecting pipes 12, the top of the pressure stabilizer main body 1 is provided with symmetrically arranged pressure relief pipe connecting pipes 34, the safety valve connecting pipe 35 and the pressure gauge 36 are installed at the top of the pressure stabilizer main body 1, the pressure gauge 36 is located in front of the safety valve connecting pipe 35, the safety valve connecting pipe 35 is located in the middle of one group of connecting pipes 12 and one group of pressure relief pipe connecting pipes 34, the other group of pressure relief pipe connecting pipes 34 are located on one side of the other group of connecting pipes 12, the spray pipe 37 is installed at the tail end of the other group of connecting pipes 12, the water storage pipe 38 is installed on the inner wall of the pressure stabilizer main body 1, the spray head two 39 which are evenly arranged are installed on the outer surface of the water storage pipe 38, the tail end of the spray pipe 37 is connected with the outer surface of the water storage pipe 38, the bottom seal head 40 is installed on the inner wall of the pressure stabilizer main body 1, the fluctuation pipe connecting pipe 42 is installed at the bottom center position of the bottom seal head 40, the evenly arranged electric heaters 41 are installed on the top and the bottom of the bottom seal head 40, the electric heaters 41 are located on the outer sides of the fluctuation pipe connecting pipes 42, the electric heaters 41 are located below the spray head two 39, and the bottom of the pressure stabilizer main body 1 is provided with the support skirt 43.
Further, before using the cooling spray device, the sleeve 3 is firstly sleeved on the surface of the pressure stabilizer main body 1, the sleeve 3 is fixed by the engagement of the clamping groove 4 and the supporting plate 2, then the pressure stabilizer main body 1 is fixed on a loop through the supporting skirt 43, a safety valve is arranged on the safety valve connecting pipe 35, the pressure relief valve is arranged on the pressure relief pipe connecting pipe 34, so that when the pressure stabilizer main body 1 is used, the pressure index inside the pressure stabilizer main body 1 can be monitored at the moment by the pressure gauge 36, the loop overpressure is prevented, when the loop overpressure occurs, the steam inside the pressure stabilizer main body 1 is discharged into the pressure relief box through the safety valve, and when the loop overpressure occurs, the temperature inside the pressure stabilizer main body 1 is monitored by the temperature sensor 14, when the temperature is too low, the electric heater 41 is started, when the temperature is too high, the water pump 31 on the water storage tank 24 is started, then, water in the water storage tank 24 can be pumped out through the water pumping pipe 32 and is conveyed into the spray pipe 37 through the conveying pipe 33, so that water can be stored in the water storage pipe 38, then water can be sprayed into the interior of the pressure stabilizer main body 1 through the spray nozzle two 39, the electric valve one 10 is automatically reset through power failure, the electric valve one 10 is in an open state when power failure occurs, water in the water storage barrel 6 can be conveyed into the interior of one group of connecting pipes 12 through the water conveying pipe one 11 and sprayed out through the spray nozzle one 13, the interior of the pressure stabilizer main body 1 can be cooled, the condition that a coolant boils in a reactor after power failure can be avoided to a certain extent, the safety of the pressure stabilizer main body 1 in use is improved, and a large amount of dust can be prevented from being accumulated in the interior of the water storage barrel 6 through the arrangement of the filter screen 7.
Referring to fig. 4 and 7, an embodiment of the present invention is provided: the utility model provides a cooling spray protection device for nuclear power station stabiliser, including outlet pipe two 15 and electronic valve 22, outlet pipe two 15 is installed to the bottom of water storage barrel 6, and outlet pipe two 15 are located the outside of outlet pipe one 9, the raceway two 17 is installed to the bottom of outlet pipe two 15, symmetrical arrangement's inlet tube one 16 is installed at the top of sleeve 3, the tail end of raceway two 17 is connected with the top of inlet tube one 16, the electrical valve two 18 that resets automatically in outage is installed to the surface of raceway two 17, alarm 19 is installed at the top of sleeve 3, electric connection between temperature sensor 14 and the alarm 19, alarm 19 is located the centre of a set of inlet tube one 16 and support column 5, inlet tube one 16 and support column 5 interval distribution, the surface mounting of sleeve 3 has drain pipe 20, the interior surface mounting of drain pipe 20 has raceway three 21, the surface mounting of raceway three 21 has electronic valve 22, and this electronic valve 22 is normally closed.
Further, through the setting of outage automatic re-setting motorised valve two 18, can open automatically when the outage for water in the water storage barrel 6 can get into the inside of raceway two 17 through outlet pipe two 15, finally flow into the inside of sleeve 3 through inlet tube one 16, simultaneously, electronic valve 22 is the closed condition, just can cool down the surface of stabiliser main part 1 through sleeve 3 afterwards, improve the efficiency of cooling, after the circular telegram, electronic valve 22 opens, and the water in the sleeve 3 can flow out through drain pipe 20 this moment, and flow into storage device through raceway three 21, convenient recycle.
Referring to fig. 2 and 3, an embodiment of the present invention is provided: the utility model provides a cooling spray protection device for nuclear power station stabiliser, including putting thing board 23 and floater 30, one side outer wall of loading board 8 installs and puts thing board 23, put the top of thing board 23 and install storage water tank 24, inlet tube two 25 is installed at the top of storage water tank 24, the surface threaded connection of inlet tube two 25 has block 26, link 27 is installed to the roof of block 26, the internal surface of link 27 installs pressure sensor, the outer surface cover of link 27 is hung and is installed couple 28, the external surface of couple 28 installs the joint piece, the haulage rope 29 is installed to the bottom of joint piece, the floater 30 is installed to the tail end of haulage rope 29, evenly arranged's weighting ball has been placed to the inside of floater 30, the warning light is installed at the top of storage water tank 24, electric connection between warning light and the pressure sensor, floater 30 can be at the surface of water, after the water level in storage water tank 24 descends to a certain extent, the inside weighting ball of floater 30 can pull couple 29 for the pressure sensor of couple 28 can exert pressure to the inboard of link 27.
Further, when using this cooling sprays protection device, along with the water level in the storage water tank 24 reduces gradually, the buoyancy that floater 30 received is less and less, after the water level in storage water tank 24 drops to the threshold value, floater 30 no longer floats at the water level surface this moment, the inside weighting ball of floater 30 can drive haulage rope 29 downwardly pulling couple 28 for couple 28 can exert maximum pressure to the pressure sensor of link 27 internal surface, then the warning light lights up, thereby remind relevant staff to unscrew cap 26, add water in to storage water tank 24 through inlet tube two 25, flexibility and practicality when can improve this cooling sprays protection device to a certain extent.
Further, the using method of the cooling spray protection device is as follows:
s1, before the cooling spray protection device is used, firstly, the voltage stabilizer main body 1 is installed on a loop system through a supporting skirt seat 43, and the bearing plate 8 is contacted with the ground, so that the bearing plate 8 can play a certain supporting role on the water storage barrel 6;
s2, when the cooling spraying device is used, firstly, the inside of the pressure stabilizer main body 1 is detected through the temperature sensor 14, when the temperature is too low, the electric heater 41 is started, so that the electric heater 41 can perform heating operation on liquid entering the inside of the pressure stabilizer main body 1, the pressure index inside the pressure stabilizer main body 1 is monitored at any time through the pressure gauge 36, the overpressure of a loop is prevented, and when the overpressure of the loop occurs, the surface of the safety valve connecting pipe 35 is connected with a safety valve, and then steam in the pressure stabilizer main body 1 can be discharged into a pressure relief box;
s3, in the spraying process, the floating ball 30 in the water storage tank 24 can float up and down along with the change of the water level, and when the water level in the water storage tank 24 gradually drops, the floating ball 30 also drops along with the water level, so that the weighting ball can drive the traction rope 29 downwards to pull the hook 28;
s4, when power is off, the first power-off automatic reset electric valve 10 and the second power-off automatic reset electric valve 18 on the outer surfaces of the first water pipe 11 and the second water pipe 17 are in an open state, so that water in the water storage barrel 6 can be sprayed into the pressure stabilizer main body 1 through the first spray head 13 under the action of gravity and flow into the sleeve 3, and the sleeve 3 can cool the peripheral part of the pressure stabilizer main body 1.
In step S2, the method further includes the steps of:
s21, when the temperature is too high, the water pump 31 is started, water in the water storage tank 24 is pumped out through the water pumping pipe 32 and is conveyed into one group of connecting pipes 12 through the conveying pipe 33, then water is conveyed into the water storage pipe 38 through the spraying pipe 37 and is sprayed into the pressure stabilizer main body 1 through the spray head two 39, so that water vapor balance in the pressure stabilizer main body 1 is maintained through spraying and heating, and the pressure of a loop is limited in a range;
in step S3, the method further includes the steps of:
s31, after the water level in the water storage tank 24 drops to a threshold value, the floating ball 30 is not lifted by buoyancy, at the moment, the hook 28 can apply maximum pressure to the pressure sensor in the hanging ring 27 under the action of the weighting ball, and at the moment, the warning lamp is turned on, so that relevant staff is reminded of timely adding water into the water storage tank 24;
in step S4, the method further includes the steps of:
s41, through the arrangement of the first spray head 13, the inside of the voltage stabilizer main body 1 can be cooled when power is cut off, the volume change caused by temperature change of a compensation loop is compensated, the pressure fluctuation caused by temperature change is relieved, the condition that a coolant boils in a reactor after power off is avoided, the safety in use is improved, after power is supplied, the electronic valve 22 can be opened, and then water in the sleeve 3 can be conveyed into a storage device through the water conveying pipe III 21, so that the subsequent recycling is facilitated.
Working principle: when the cooling spray device is used, firstly, the temperature sensor 14 detects the inside of the pressure stabilizer main body 1, when the temperature is too low, the electric heater 41 is started, when the temperature is too high, the water pump 31 is started, the water in the water storage tank 24 is pumped out through the water pumping pipe 32, is conveyed into the spray pipe 37 through the conveying pipe 33, and is sprayed into the inside of the pressure stabilizer main body 1 through the spray heads two 39;
in the spraying process, after the water level in the water storage tank 24 drops to a threshold value, the floating ball 30 is not lifted by buoyancy, and at the moment, the traction rope 29 can be driven downwards to pull the hook 28 under the action of the weighting ball, so that the pressure sensor on the inner surface of the hanging ring 27 can detect the maximum pressure, and at the moment, the warning lamp is turned on, so that relevant staff is reminded of timely adding water into the water storage tank 24;
when the power is off, the first power-off automatic reset electric valve 10 and the second power-off automatic reset electric valve 18 on the outer surfaces of the first water pipe 11 and the second water pipe 17 are in an open state, so that water in the water storage barrel 6 can be sprayed into the interior of the voltage stabilizer main body 1 and the interior of the sleeve 3 through the first spray head 13 under the action of gravity, the cooling spraying effect can be improved to a certain extent, and the safety of the nuclear power station after power off is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides a cooling spray protection device for nuclear power station stabiliser, includes stabiliser main part (1), its characterized in that: the external surface of the voltage stabilizer main body (1) is provided with a supporting plate (2), and the external surface of the voltage stabilizer main body (1) is sleeved with a sleeve (3);
the water storage device comprises a water storage barrel, a water storage barrel (6) and a water storage barrel (6), wherein support columns (5) are symmetrically arranged at the tops of the sleeve (3), the water storage barrel (6) is provided with a bearing plate (8) on the outer surface, the bearing plate (8) is positioned at the rear of the sleeve (3), a filter screen plate (7) is embedded in the water storage barrel (6), a first water outlet pipe (9) is arranged at the center of the bottom of the water storage barrel (6), a connecting pipe (12) is symmetrically arranged at the top of a voltage stabilizer main body (1), a first water delivery pipe (11) is arranged on the inner surface of the first water outlet pipe (9), and an automatic power-off reset electric valve (10) is arranged on the outer surface of the first water delivery pipe (11);
the tail end of one group of connecting pipes (12) is provided with a first spray head (13), and the top wall of the voltage stabilizer main body (1) is provided with symmetrically arranged temperature sensors (14);
a second water outlet pipe (15) is arranged at the bottom of the water storage barrel (6), the second water outlet pipe (15) is positioned at the outer side of the first water outlet pipe (9), a second water delivery pipe (17) is arranged at the bottom end of the second water outlet pipe (15), a first water inlet pipe (16) which is symmetrically arranged is arranged at the top of the sleeve (3), the tail end of the second water delivery pipe (17) is connected with the top end of the first water inlet pipe (16), a second power-off automatic reset electric valve (18) is arranged on the outer surface of the second water delivery pipe (17), and an alarm (19) is arranged at the top of the sleeve (3);
the outer surface of the sleeve (3) is provided with a drain pipe (20), the inner surface of the drain pipe (20) is provided with a water delivery pipe III (21), the outer surface of the water delivery pipe III (21) is provided with an electronic valve (22), and the electronic valve (22) is normally closed.
2. The cooling spray protection device for a nuclear power plant voltage regulator of claim 1, wherein: the utility model discloses a weight-increasing device for the automobile, including loading board (8), storage board (23) are installed to one side outer wall of loading board (8), storage water tank (24) are installed at the top of putting thing board (23), inlet tube two (25) are installed at the top of storage water tank (24), outer surface threaded connection of inlet tube two (25) has block (26), link (27) are installed to the roof of block (26), pressure sensor is installed to the interior surface of link (27), couple (28) are installed to the surface cover of link (27), the engagement block is installed to the surface of couple (28), haulage rope (29) are installed to the bottom of engagement block, floater (30) are installed to the tail end of haulage rope (29), the inside of floater (30) has been placed the weight-increasing ball of evenly arranging.
3. A cooling spray protection device for a nuclear power plant voltage regulator as defined in claim 2, wherein: one end of the first water pipe (11) is connected with the top end of one group of connecting pipes (12), the first spray head (13) is positioned in the pressure stabilizer main body (1), the temperature sensors (14) are positioned on two sides of the first spray head (13), the bottom of the sleeve (3) is provided with a clamping groove (4), the clamping groove (4) is embedded with the supporting plate (2), and the sleeve (3) is of a hollow structure;
the temperature sensor (14) is electrically connected with the alarm (19), the alarm (19) is positioned between one group of water inlet pipes I (16) and the support columns (5), and the water inlet pipes I (16) and the support columns (5) are distributed at intervals;
the warning light is installed at the top of storage water tank (24), electric connection between warning light and the pressure sensor, floater (30) can float at the surface of water, after the water level in storage water tank (24) descends to a certain degree, the inside weighting ball of floater (30) can pull haulage rope (29) for couple (28) can exert pressure to the pressure sensor of link (27) inboard.
4. A cooling spray protection device for a nuclear power plant voltage regulator as defined in claim 3, wherein: the water pump (31) is installed at the top of storage water tank (24), and water pump (31) are located the centre of block (26) and warning lamp, suction pipe (32) is installed to the input of water pump (31), and the inside of storage water tank (24) is stretched into to the one end of suction pipe (32), conveyer pipe (33) are installed to the output of water pump (31), and the one end of conveyer pipe (33) is connected with the top of another group connecting pipe (12), relief pipe takeover (34) of symmetrical arrangement are installed at the top of stabiliser main part (1), relief valve takeover (35) and manometer (36) are installed at the top of stabiliser main part (1), and manometer (36) are located the place ahead of relief valve takeover (35), relief valve takeover (35) are located the centre of one of them a set of connecting pipe (12) and one of them relief pipe takeover (34), another set of relief pipe takeover (34) are located one side of another group connecting pipe (12).
5. The cooling spray protection device for a nuclear power plant voltage regulator of claim 4, wherein: the tail end of the other group of connecting pipes (12) is provided with a spray pipe (37), the inner wall of the voltage stabilizer main body (1) is provided with a water storage pipe (38), the outer surface of the water storage pipe (38) is provided with spray heads II (39) which are uniformly arranged, and the tail end of the spray pipe (37) is connected with the outer surface of the water storage pipe (38).
6. The cooling spray protection device for a nuclear power plant voltage regulator of claim 5, wherein: the inner wall of the voltage stabilizer main body (1) is provided with a bottom sealing head (40), a fluctuation pipe connecting pipe (42) is arranged at the bottom center position of the bottom sealing head (40), the top and the bottom of the bottom sealing head (40) are provided with electric heaters (41) which are uniformly arranged, the electric heaters (41) are positioned on the outer sides of the fluctuation pipe connecting pipe (42), the electric heaters (41) are positioned below a spray head II (39), and the bottom of the voltage stabilizer main body (1) is provided with a supporting skirt seat (43).
7. The method of using a cooling spray protection device for a nuclear power plant voltage regulator of claim 6, wherein the method of using the cooling spray protection device is as follows:
s1, before the cooling spray protection device is used, firstly, the voltage stabilizer main body (1) is installed on a loop system through a supporting skirt seat (43), and the bearing plate (8) is contacted with the ground, so that the bearing plate (8) can play a certain supporting role on the water storage barrel (6);
s2, when the cooling spraying device is used, firstly, the inside of the pressure stabilizer main body (1) is detected through the temperature sensor (14), when the temperature is too low, the electric heater (41) is started, so that the electric heater (41) can perform heating operation on liquid entering the inside of the pressure stabilizer main body (1), the pressure index inside the pressure stabilizer main body (1) is monitored at any time through the pressure gauge (36), the overpressure of a loop is prevented, and when the overpressure of the loop is caused, the surface of the safety valve connecting pipe (35) is connected with the safety valve, and then, the steam in the pressure stabilizer main body (1) can be discharged into the pressure relief box;
s3, in the spraying process, the floating ball (30) in the water storage tank (24) can float up and down along with the change of the water level, and when the water level in the water storage tank (24) gradually drops, the floating ball (30) also drops along with the water level, so that the weighting ball can drive the traction rope (29) downwards to pull the hook (28);
s4, when power is off, the first power-off automatic reset electric valve (10) and the second power-off automatic reset electric valve (18) on the outer surfaces of the first water conveying pipe (11) and the second water conveying pipe (17) are in an open state, so that water in the water storage barrel (6) can be sprayed into the pressure stabilizer main body (1) through the first spray head (13) and flow into the sleeve (3) under the action of gravity, and the sleeve (3) can cool the peripheral part of the pressure stabilizer main body (1).
8. The method of using a cooling spray protection device for a nuclear power plant voltage regulator according to claim 7, further comprising the steps of, in said step S2:
s21, when the temperature is too high, a water pump (31) is started, water in a water storage tank (24) is pumped out through a water pumping pipe (32) and is conveyed into one group of connecting pipes (12) through a conveying pipe (33), then water is conveyed into the water storage pipe (38) through a spraying pipe (37) and is sprayed into the pressure stabilizer main body (1) through a second spraying nozzle (39), so that the water vapor balance in the pressure stabilizer main body (1) is maintained through spraying and heating, and the pressure of a loop is limited in a range;
in the step S3, the method further includes the following steps:
s31, after the water level in the water storage tank (24) drops to a threshold value, the floating ball (30) is not lifted by buoyancy, at the moment, the hook (28) can apply maximum pressure to the pressure sensor in the hanging ring (27) under the action of the weighting ball, and at the moment, the warning lamp is lightened, so that relevant staff is reminded of timely adding water into the water storage tank (24);
in the step S4, the method further includes the following steps:
s41, through the arrangement of the first spray head (13), the inside of the voltage stabilizer main body (1) can be cooled when power is off, the volume change of the compensation loop caused by temperature change is relieved, the pressure fluctuation caused by the temperature change is relieved, the condition that the coolant boils in the reactor after power off is avoided, the safety in use is improved, after power is on, the electronic valve (22) can be opened, and then water in the sleeve (3) can be conveyed into the storage device through the third water conveying pipe (21), so that the subsequent recycling is facilitated.
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| CN202310000099.4A CN115831403B (en) | 2023-01-01 | 2023-01-01 | Cooling spray protection device for nuclear power station voltage stabilizer |
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| CN202310000099.4A CN115831403B (en) | 2023-01-01 | 2023-01-01 | Cooling spray protection device for nuclear power station voltage stabilizer |
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