CN212411590U - System for controlling reactor power - Google Patents
System for controlling reactor power Download PDFInfo
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- CN212411590U CN212411590U CN202021417509.3U CN202021417509U CN212411590U CN 212411590 U CN212411590 U CN 212411590U CN 202021417509 U CN202021417509 U CN 202021417509U CN 212411590 U CN212411590 U CN 212411590U
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- 239000012530 fluid Substances 0.000 claims abstract description 215
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 238000002955 isolation Methods 0.000 claims description 44
- 238000007789 sealing Methods 0.000 claims description 19
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 9
- 230000006872 improvement Effects 0.000 description 6
- 230000009257 reactivity Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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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- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a system for controlling reactor power, which comprises a control rod module (1) and a fluid supply module (2); wherein a reactor comprises a plurality of control rod modules (1), the plurality of control rod modules (1) sharing a set of fluid supply modules (2). The utility model changes the original regulation of the slender rod-shaped solid control rod into the regulation of the liquid, and the regulation is more accurate; the long and thin rod-shaped solid control rod is filled and discharged into liquid, so that the long and thin rod-shaped solid control rod is replaced by the long and thin rod-shaped solid control rod which is installed and removed at present, the installation, the operation, the maintenance and the maintenance are convenient, and the defect that the long and thin rod-shaped solid control rod is easy to bend and bend is overcome.
Description
Technical Field
The utility model belongs to the technical field of the nuclear power, concretely relates to reactor power control's system.
Background
At present, the reactor power control is mainly realized by inserting and lifting control rods downwards. This method mainly has the following disadvantages:
(1) the control rod is a slender rod-shaped structure, and is difficult to hang and take out, and the occupied space is large;
(2) rod clamping and rod bouncing accidents frequently occur during operation, and the operation safety of the unit is threatened;
(3) the problem of rod clamping occurs in the debugging stage of the high-temperature gas cooled reactor, and the problem is not thoroughly solved at present;
(4) the control rod has higher material requirement and difficult manufacture;
(5) the control rods have poor precision in regulating the reactor power.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reactor power control's system to the problem that present reactor power control exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
a system for reactor power control includes a control rod module and a fluid supply module; wherein a reactor includes a plurality of control rod modules that share a set of fluid supply modules.
The utility model is further improved in that the control rod module comprises an upper fluid tank, a lower fluid tank, a connecting straight pipe, an electric control slide valve, a drain valve, an isolation slide valve and a sealing slide valve; wherein,
the connecting straight pipe is connected with an upper fluid tank and a lower fluid tank which are arranged from top to bottom, the sealing slide valve is arranged in the lower fluid tank and can slide up and down in the upper fluid tank, the isolating slide valve is arranged in the connecting straight pipe and can slide up and down in the connecting straight pipe, and the lower fluid tank and the fluid supply module form a circulation loop through the electric control slide valve and the drain valve.
The utility model has the further improvement that the fluid supply module comprises a pressure fluid tank, a fluid return tank, a pressure stabilizing pump and a system pressure control valve; wherein,
the outlet of the fluid return tank is connected to the inlet of a pressure stabilizing pump, the outlet of the pressure stabilizing pump is connected to the inlet of a pressure fluid tank, and a first outlet of the pressure fluid tank is connected to a first inlet of the fluid return tank through a system pressure control valve; the second outlet of the pressure fluid tank is connected to the first inlet of the electrically controlled slide valve, the first outlet of the lower fluid tank is connected to the second inlet of the electrically controlled slide valve, the second outlet of the lower fluid tank is connected to the second inlet of the fluid return tank through a drain valve, the first outlet of the electrically controlled slide valve is connected to the third inlet of the fluid return tank, and the second outlet of the electrically controlled slide valve is connected to the inlet of the lower fluid tank.
The utility model discloses further improvement lies in, can form the space of isolation from top to bottom at sealed slide valve in the upper portion fluid tank, and can upwards slide under the fluidic promotion in sealed slide valve lower part, and after sealed slide valve lower part fluid pressure reduced, can slide downwards under the action of gravity.
The utility model discloses further improvement lies in, connects the space that can form the isolation about the isolation slide valve in the straight tube, and can upwards slide under the promotion of isolation slide valve lower part fluid, keeps apart slide valve lower part fluid pressure and reduces the back, can slide downwards under the action of gravity.
The utility model discloses further improvement lies in, the bleeder valve has the quick-open functional requirement, receives the quick-open instruction back at the bleeder valve, can unload the fluid in the lower part fluid tank back to the fluid return-flow tank in rapidly.
The utility model is further improved in that the electric control slide valve can accurately control the fluid amount flowing from the pressure fluid tank to the lower fluid tank according to the instruction; the electrically controlled spool valve allows for precise control of the amount of fluid flowing from the lower tank to the fluid return tank on command.
The utility model discloses further improvement lies in, and steady pressure pump and system pressure control valve combined action can guarantee pressure fluid tank and the pipeline pressure that links to each other stabilizes pressure C, and pressure C satisfies and pushes away the top to the straight tube with the isolation slide valve.
The utility model has the further improvement that the volume of the fluid return tank meets the condition that the liquid level is not higher than the highest liquid level after all the fluids in the lower pipeline of the isolation slide valve, the lower fluid tank and the pressure fluid tank return to the fluid return tank; the volume of the fluid return tank meets the condition that the liquid level of the isolation slide valve lower pipeline, the lower fluid tank and the pressure fluid tank is not lower than the lowest liquid level after the isolation slide valve lower pipeline, the lower fluid tank and the pressure fluid tank are filled with fluid.
A method for controlling reactor power, the method for controlling reactor power comprising the steps of:
filling fluid A with neutron absorption capacity into an upper pipeline of the isolation slide valve and the upper fluid tank, wherein the quantity of the fluid A is more than that when the isolation slide valve slides to the bottom of the connecting straight pipe, the liquid level of the upper fluid tank is higher than the lowest liquid level of the upper fluid tank, the quantity of the fluid A is less than that when the isolation slide valve slides to the top of the connecting straight pipe, the liquid level of the upper fluid tank is lower than the highest liquid level of the upper fluid tank, and the sealing slide valve slides up and down along with the change of the liquid level of the upper fluid tank to isolate the upper fluid from the ambient environment;
filling a fluid B without neutron absorption capacity in the fluid return tank;
starting a pressure stabilizing pump, filling fluid B into the pressure fluid tank, the lower fluid tank and the lower pipeline of the isolation slide valve, and adjusting the pressure of the pressure fluid tank by using a system pressure control valve to enable the pressure fluid tank to be stabilized to a pressure C, wherein the pressure C meets the requirement of pushing the isolation slide valve to the top of the straight pipe;
when the load of the reactor needs to be increased, the electric control slide valve is adjusted, so that the fluid B in the lower fluid tank is increased, the fluid pushes the isolation slide valve to move upwards, the fluid B in the connecting straight pipe is increased, the fluid A is reduced, the neutron absorption capacity of the control rod module is weakened, and the power of the reactor is increased;
when the load of the reactor needs to be reduced, the electric control slide valve is adjusted, so that the fluid B in the lower fluid tank is reduced, the fluid pushes the isolation slide valve to move downwards, the fluid A in the connecting straight pipe is increased, the fluid B is reduced, the neutron absorption capacity of the control rod module is enhanced, and the power of the reactor is reduced;
when the reactor is protected, the bleeder valve is quickly opened, the fluid B in the lower fluid tank is quickly discharged back to the fluid return tank, the connecting straight pipe is filled with the fluid A, and the reactor power is reduced to zero.
Compared with the prior art, the utility model discloses following advantage has:
the utility model provides a pair of system of reactor power control, this system has following several obvious advantages in the aspect with the system that uses usually at present:
the utility model provides a pair of reactor power control's system adopts one set of fluid supply module of a plurality of control rod module cooperations to replace the long and thin stick pole that needs often, meticulous removal, reduced fault rates such as sticking rod, bullet stick, it is safer to the operation of reactor.
Furthermore, the control rod module adopts a liquid control rod with neutron absorption capacity, and the reactivity value of the control rod can be easily adjusted by adjusting the components of the liquid absorbing neutrons, so that the reactor is convenient to design, and the control rod manufacturing industry is higher and easier.
Further, when the isolation slide valve slides to the bottom of the connecting straight pipe, the control rod module is inserted into the reactor completely, when the isolation slide valve slides to the top of the connecting straight pipe, the control rod module is pulled out of the reactor completely, the ratio of the difference of the effective multiplication coefficients of the reactor before and after the control rod module is inserted into the reactor to the effective multiplication coefficient of the reactor before the control rod module is inserted is called the reactivity value of the control rod module, and the reactivity value of the control rod module 1 formed by the fluid A is required to meet the control requirement of the reactor.
In conclusion, the utility model changes the original regulation of the slender rod-shaped solid control rod into the regulation of the liquid, and the regulation is more accurate; the long and thin rod-shaped solid control rod is replaced by filling and discharging liquid, so that the installation, operation, maintenance and maintenance are convenient, and the defect that the long and thin rod-shaped solid control rod is easy to bend and bend is overcome; therefore, the utility model provides more reactor control methods.
Drawings
Fig. 1 is a block diagram of a system for reactor power control according to the present invention.
Description of reference numerals:
1-control rod module, 2-fluid supply module, 3-upper fluid tank, 4-connecting straight pipe, 5-lower fluid tank, 6-electric control slide valve, 7-relief valve, 8-isolation slide valve, 9-sealing slide valve, 10-pressure fluid tank, 11-fluid return tank, 12-pressure stabilizing pump and 13-system pressure control valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a system for reactor power control, which includes a control rod module 1 and a fluid supply module 2; wherein one reactor comprises a plurality of control rod modules 1, and the plurality of control rod modules 1 share a set of fluid supply modules 2.
The control rod module 1 comprises an upper fluid tank 3, a lower fluid tank 5, a connecting straight pipe 4, an electric control slide valve 6, a drain valve 7, an isolation slide valve 8 and a sealing slide valve 9; the connecting straight pipe 4 is connected with an upper fluid tank 3 and a lower fluid tank 5 which are arranged from top to bottom, the sealing slide valve 9 is arranged in the fluid tank 3 and can slide up and down in the upper fluid tank 3, the isolation slide valve 8 is arranged in the connecting straight pipe 4 and can slide up and down in the connecting straight pipe 4, and the lower fluid tank 5 and the fluid supply module 2 form a circulation loop through the electric control slide valve 6 and the drain valve 7.
The fluid supply module 2 comprises a pressure fluid tank 10, a fluid return tank 11, a pressure stabilizing pump 12 and a system pressure control valve 13; wherein, the outlet of the fluid return tank 11 is connected to the inlet of a pressure maintaining pump 12, the outlet of the pressure maintaining pump 12 is connected to the inlet of the pressure fluid tank 10, and the first outlet of the pressure fluid tank 10 is connected to the first inlet of the fluid return tank 11 through a system pressure control valve 13; a second outlet of the pressure fluid tank 10 is connected to a first inlet of the electrically controlled slide valve 6, a first outlet of the lower fluid tank 5 is connected to a second inlet of the electrically controlled slide valve 6, a second outlet of the lower fluid tank 5 is connected to a second inlet of the fluid return tank 11 via the drain valve 7, a first outlet of the electrically controlled slide valve 6 is connected to a third inlet of the fluid return tank 11, and a second outlet of the electrically controlled slide valve 6 is connected to an inlet of the lower fluid tank 5.
Wherein, the sealing slide valve 9 has certain sealing performance requirements, and isolated spaces can be formed above and below the sealing slide valve 9; the sealing slide valve 9 has a certain weight requirement, can slide upwards under the pushing of the lower fluid of the sealing slide valve 9, and can slide downwards under the action of gravity after the lower fluid pressure of the sealing slide valve 9 is reduced. The isolation slide valve 8 has certain sealing performance requirements, and isolated spaces can be formed above and below the isolation slide valve 8; the isolation slide valve 8 has a certain weight requirement, can slide upwards under the pushing of the fluid at the lower part of the isolation slide valve 8, and can slide downwards under the action of gravity after the pressure of the fluid at the lower part of the isolation slide valve 8 is reduced.
Further, the drain valve 7 has a quick-opening function requirement, and the fluid in the lower fluid tank 5 can be quickly discharged back to the fluid return tank 11 after the drain valve 7 receives a quick-opening instruction. The electrically controlled slide valve 6 can precisely control the amount of fluid flowing from the pressure fluid tank 10 to the lower fluid tank 5 on command; the electrically controlled slide valve 6 can precisely control the amount of fluid flowing out of the lower fluid tank 5 to the fluid return tank 11 on command. The combination of the pressure maintaining pump 12 and the system pressure control valve 13 ensures that the pressure in the pressure fluid tank 10 and the connected pipeline is stabilized to a pressure C which is sufficient to push the isolation slide valve 8 to the top of the straight pipe 4.
The volume of the fluid return tank 11 is such that the liquid level of all the fluid in the lower pipeline of the isolation slide valve 8, the lower fluid tank 5 and the pressure fluid tank 10 is not higher than the highest liquid level after the fluid returns to the fluid return tank 11; the volume of the fluid return tank 11 is such that the fluid level of the lower pipe of the isolation slide 8, the lower fluid tank 5 and the pressure fluid tank 10 is not lower than the lowest fluid level.
The utility model provides a pair of reactor power control's system, the during operation specifically includes following step:
filling fluid A with strong neutron absorption capacity into an upper pipeline of the isolation slide valve 8 and the upper fluid tank 3, wherein the quantity of the fluid A is more than that when the isolation slide valve 8 slides to the bottom of the connecting straight pipe 4, the liquid level of the upper fluid tank 3 is higher than the lowest liquid level of the upper fluid tank 3, the quantity of the fluid A is less than that when the isolation slide valve 8 slides to the top of the connecting straight pipe 4, the liquid level of the upper fluid tank 3 is lower than the highest liquid level of the upper fluid tank 3, and the sealing slide valve 9 slides up and down along with the change of the liquid level of the upper fluid tank 3 to isolate the upper fluid from the surrounding environment; when the isolation slide valve 8 slides to the bottom of the connecting straight pipe 4, the control rod module 1 is inserted into the reactor completely, when the isolation slide valve 8 slides to the top of the connecting straight pipe 4, the control rod module 1 is pulled out of the reactor completely, the ratio of the difference of the effective multiplication coefficients of the reactor before and after the control rod module 1 is inserted into the reactor to the effective multiplication coefficient of the reactor before the control rod module 1 is inserted into the reactor is called the reactivity value of the control rod module 1, and the reactivity value of the control rod module 1 formed by the fluid A can meet the requirement of the reactor control.
A fluid B with weak neutron absorption capacity is filled in the fluid return tank 11;
starting a pressure stabilizing pump 12, filling fluid B into the pressure fluid tank 10, the lower fluid tank 5 and the lower pipeline of the isolation slide valve 8, and adjusting the pressure of the pressure fluid tank 10 by using a system pressure control valve 13 to stabilize the pressure fluid tank to C;
when the load of the reactor needs to be increased, the electric control slide valve 6 is adjusted to increase the fluid B in the lower fluid tank 5, the fluid pushes the isolation slide valve 8 to move upwards, the fluid B in the connecting straight pipe 4 is increased, the fluid A is reduced, the neutron absorption capacity of the control rod module 1 is weakened, and the power of the reactor is increased;
when the load of the reactor needs to be reduced, the electric control slide valve 6 is adjusted, so that the fluid B in the lower fluid tank 5 is reduced, the fluid pushes the isolation slide valve 8 to move downwards, the fluid A in the connecting straight pipe 4 is increased, the fluid B is reduced, the neutron absorption capacity of the control rod module 1 is enhanced, and the reactor power is reduced;
when the reactor is protected, the bleeder valve 7 is quickly opened, the fluid B in the lower fluid tank 5 is quickly discharged back to the fluid return tank 11, the connecting straight pipe 4 is filled with the fluid A, and the reactor power is reduced to zero.
Claims (9)
1. A system for reactor power control, comprising a control rod module (1) and a fluid supply module (2); wherein,
a reactor includes a plurality of control rod modules (1), the plurality of control rod modules (1) sharing a set of fluid supply modules (2).
2. A system for reactor power control according to claim 1, characterized in that the control rod module (1) comprises an upper fluid tank (3), a lower fluid tank (5), a connecting straight pipe (4), an electrically controlled slide valve (6), a blow-off valve (7), an isolation slide valve (8) and a sealing slide valve (9); wherein,
the connecting straight pipe (4) is connected with an upper fluid tank (3) and a lower fluid tank (5) which are arranged from top to bottom, the sealing slide valve (9) is arranged in the upper fluid tank (3) and can slide up and down in the upper fluid tank (3), the isolating slide valve (8) is arranged in the connecting straight pipe (4) and can slide up and down in the connecting straight pipe (4), and the lower fluid tank (5) and the fluid supply module (2) form a circulation loop through the electric control slide valve (6) and the drain valve (7).
3. A system for reactor power control according to claim 2, characterized in that the fluid supply module (2) comprises a pressure fluid tank (10), a fluid return tank (11), a pressure maintaining pump (12) and a system pressure control valve (13); wherein,
an outlet of the fluid return tank (11) is connected to an inlet of a pressure stabilizing pump (12), an outlet of the pressure stabilizing pump (12) is connected to an inlet of the pressure fluid tank (10), and a first outlet of the pressure fluid tank (10) is connected to a first inlet of the fluid return tank (11) through a system pressure control valve (13); the second outlet of the pressure fluid box (10) is connected to the first inlet of the electric control slide valve (6), the first outlet of the lower fluid box (5) is connected to the second inlet of the electric control slide valve (6), the second outlet of the lower fluid box (5) is connected to the second inlet of the fluid return box (11) through the drain valve (7), the first outlet of the electric control slide valve (6) is connected to the third inlet of the fluid return box (11), and the second outlet of the electric control slide valve (6) is connected to the inlet of the lower fluid box (5).
4. A reactor power control system according to claim 3, characterized in that the upper fluid tank (3) forms a separate space above and below the sealing slide valve (9) and can slide upwards under the push of the lower fluid of the sealing slide valve (9), and can slide downwards under the action of gravity after the lower fluid pressure of the sealing slide valve (9) is reduced.
5. A reactor power control system according to claim 3, characterized in that the connection straight pipe (4) can form isolated spaces above and below the isolation slide valve (8), and can slide upwards under the push of the fluid below the isolation slide valve (8), and can slide downwards under the action of gravity after the pressure of the fluid below the isolation slide valve (8) is reduced.
6. A system for reactor power control according to claim 3, characterized in that the bleeder valve (7) has a quick-opening function requirement, and the fluid in the lower fluid tank (5) can be quickly discharged back to the fluid return tank (11) after the bleeder valve (7) receives the quick-opening command.
7. A system for reactor power control according to claim 3, characterized in that the electrically controlled slide valve (6) is capable of accurately controlling the amount of fluid flowing from the pressure fluid tank (10) to the lower fluid tank (5) on command; the electrically controlled slide valve (6) can precisely control the amount of fluid flowing out of the lower fluid tank (5) to the fluid return tank (11) according to a command.
8. A reactor power control system according to claim 3 characterised in that the combination of the pressure maintaining pump (12) and the system pressure control valve (13) ensures that the pressure in the pressure fluid tank (10) and its associated piping is stabilised to a pressure C sufficient to push the isolation slide valve (8) to the top of the straight pipe (4).
9. A reactor power control system according to claim 3, characterized in that the volume of the fluid return tank (11) is such that the liquid level of all the fluid in the lower pipe of the isolation slide valve (8), the lower fluid tank (5) and the pressure fluid tank (10) is not higher than the highest liquid level after the fluid returns to the fluid return tank (11); the volume of the fluid return tank (11) meets the condition that the liquid level of the lower pipeline of the isolation slide valve (8), the lower fluid tank (5) and the pressure fluid tank (10) is not lower than the lowest liquid level after being filled with fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417509.3U CN212411590U (en) | 2020-07-17 | 2020-07-17 | System for controlling reactor power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417509.3U CN212411590U (en) | 2020-07-17 | 2020-07-17 | System for controlling reactor power |
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| Publication Number | Publication Date |
|---|---|
| CN212411590U true CN212411590U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021417509.3U Active CN212411590U (en) | 2020-07-17 | 2020-07-17 | System for controlling reactor power |
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| CN (1) | CN212411590U (en) |
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2020
- 2020-07-17 CN CN202021417509.3U patent/CN212411590U/en active Active
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