CN107221363A - Detect the system and its experimental rig of pressurized water reactor CRDM performance - Google Patents
Detect the system and its experimental rig of pressurized water reactor CRDM performance Download PDFInfo
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- CN107221363A CN107221363A CN201710379259.5A CN201710379259A CN107221363A CN 107221363 A CN107221363 A CN 107221363A CN 201710379259 A CN201710379259 A CN 201710379259A CN 107221363 A CN107221363 A CN 107221363A
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
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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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- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a kind of system and its experimental rig for detecting pressurized water reactor CRDM performance.The experimental rig includes pressure vessel, it is arranged at C＆P systems simulating piece and Buffer Unit in pressure vessel, pressure vessel is hollow structure, experiment liquid can be contained, the through hole passed through for drive mechanism is offered at the top of pressure vessel, drive rod is stretched into pressure vessel and is fixedly connected with C＆P systems simulating piece, C＆P systems simulating piece is used to simulate the load that C＆P systems are brought to drive rod, and C＆P systems simulating piece is coaxially disposed with through hole, the one end of C＆P systems simulating piece away from drive rod protrudes out the buffer bar being engaged with Buffer Unit, pass through the cooperation of buffer bar and Buffer Unit, for simulating mechanical environment when cooling agent is inserted under C＆P systems.Experimental rig of the present invention can operating mode situation of analog-driven mechanism when being worked in true pressurized water reactor there is provided reliable result of the test.
Description
Technical field
The present invention relates to testing field, in particular it relates to a kind of pressurized water reactor CRDM performance that detects
System and its experimental rig.
Background technology
The CRDM of pressurized water reactor is the important composition component of reactor system, for pressurized water reactor
Safe operation and accident mitigation have extremely important effect：Each CRDM is under the jurisdiction of a specific control
Rod group, reactivity control available for reactor, axial power distributed controll or realizes reactor shutdown, and each control rod group
Interior driving mechanism structure is basically identical, by taking three generations nuclear power pressurized water reactor AP1000 nuclear power plants as an example, CRDM
It is a kind of magnetic force hoisting mechanism, mainly by four independences in integrated top cover component on top cover of reactor pressure vessel
Sub-component composition, be respectively：Pressure-bearing shell, field coil assembly, latch assembly, actuated lever assemblies.
Pressurized water reactor CRDM includes mechanical part and electric component, and mechanical part and electric component have
Effect coordinates the realization for its function to have extremely important effect.Further, since pressurized water reactor CRDM position
In the top of reactor pressure vessel, belong to the part of primary Ioops pressure boundary, certain service life should be met.Cause
And, it must targetedly carry out the cold conditions and thermal performance test of nuclear power plant's CRDM, for whether identifying its performance
Design requirement is met, and the running adaptation of nuclear power plant's CRDM is used to identify whether its life-span meets design and want
Ask.
The content of the invention
The technical problems to be solved by the invention, which are to provide, a kind of can detect the cold and hot performance of CRDM
And the system and its experimental rig of service life.
The present invention the used technical scheme that solves the above problems is：
Experimental rig for testing pressurized water reactor CRDM, including pressure vessel, it is arranged at the pressure
C＆P systems simulating piece and Buffer Unit in force container, the stroke that the length of the pressure vessel meets drive mechanism will
Ask, the pressure vessel is hollow structure, can contain and one is offered at the top of experiment liquid, the pressure vessel for driving
The through hole that mechanism is passed through, and the installation gap satisfaction of the through hole and the pressure-bearing shell makes the pressure boundary of the experimental rig complete
Whole requirement, the drive rod of the drive mechanism, which is stretched into the pressure vessel and fixed with the C＆P systems simulating piece, to be connected
Connect, the C＆P systems simulating piece is used to simulate the load that C＆P systems are brought to drive rod, and the C＆P systems
Simulating piece is coaxially disposed with the through hole, the described one end of C＆P systems simulating piece away from the drive rod protruded out with it is described
The buffer bar that Buffer Unit is engaged, by the cooperation of the buffer bar and the Buffer Unit, for simulating C＆P systems
Mechanical environment during lower insertion cooling agent, the Buffer Unit is fixed on the pressure vessel inner bottom part.
Experimental rig of the present invention can more accurate analog-driven mechanism worked in true pressurized water reactor
When operating mode situation so that using this device to C＆P systems drive mechanism carry out detection can obtain more reliably testing
As a result.Specifically such as：, instead of prototype C＆P systems, pressure on the one hand can be greatly shortened by setting C＆P systems simulating piece
The installation length of force container, on the other hand, without using fuel assembly, eliminates the installation of fuel assembly.Filled to the experiment
The liquid for providing and meeting operating condition of test is put, setting is engaged to simulate during insertion cooling agent under C＆P systems with the buffer bar
Mechanical environment Buffer Unit.
Further, the Buffer Unit includes the buffering sleeve being coaxially disposed with the buffer bar, the buffering sleeve
The pressure vessel inner bottom part is fixed on, the internal diameter of the buffering sleeve is generally higher than the external diameter of the buffer bar, when described slow
When jumper bar is stretched into the buffering sleeve, the liquid in the buffering sleeve is between the buffer bar and the buffering sleeve
Gap is flowed out, so as to realize the simulation to inserting mechanical environment during cooling agent under C＆P systems.
Further, the buffering sleeve is no more than 1mm with the minimum unilateral gap of the buffer bar diametrically.This
When, mechanical environment during cooling agent can be inserted most preferably under simulation C＆P systems.
Further, the buffering sleeve includes upper bush and lower sleeve, and the upper bush is sheathed on outside the lower sleeve,
One end of the lower sleeve is sheathed in the upper bush, and the other end is fixedly connected with the pressure vessel bottom, described to trap
Unilateral gap of the cylinder with the buffer bar diametrically is no more than 1mm.
Further, the one end of the upper bush away from the lower sleeve extends in a radial direction to form supporting for an annular
Radially protruded out on plate, the outer wall of the lower sleeve and offer some insertions on the guide plate of an annular, the guide plate
Pilot hole, accordingly, described support has protruded out and the one-to-one lead of the pilot hole on plate.Any lead is passed through
Corresponding pilot hole so that the upper bush is playing the work of guiding relative to the lower sleeve during down or up
With preventing the upper bush disalignment.
Further, the Buffer Unit also includes buffer spring, and the buffer spring, which is arranged at, described supports plate and institute
State between guide plate, and the buffer spring is sheathed on outside the upper bush and the lower sleeve.The side of buffer spring one
Face is used for the fixed support upper bush, on the other hand the C＆P systems simulating piece decline compress it is described support plate when from
To further buffering effect.
Further, the C＆P systems simulating piece also includes the counterweight body coaxial with the buffer bar and fixation
Post, the counterweight body is fixedly arranged on side of the buffer bar away from the Buffer Unit, for simulating C＆P systems to drive
The load that lever is brought, the counterweight body can be slided relative to the inwall of the pressure vessel, and the balance weight assembly energy
Enough to support cooperation with the plate that supports, the fixed column is fixedly arranged on the side of the counterweight body away from the buffer bar, is used for
It is fixedly connected with the drive rod of the drive mechanism.When the buffer bar is stretched into the buffering sleeve, the counterweight body
Drop to and support after plate offsets, continue to decline, on the one hand drive upper bush to decline relative to lower sleeve, on the other hand compress
Buffer spring, improves resistance buffering.
Further, the side wall of the pressure vessel is externally provided with temperature-controlling module, for controlling in the pressure vessel
The temperature in portion, the temperature-controlling module includes the control element of heating element heater and the control heating element heater.
Further, at least one interface of pressure measurement and at least one temperature are offered on the side wall of the pressure vessel
Degree measurement interface, any interface of pressure measurement is engaged with a pressure sensor, for measuring the pressure in the pressure vessel,
Any temperature survey interface is engaged with a temperature sensor, for measuring the temperature in the pressure vessel, and the pressure
The installation of sensor and the temperature sensor all should meet the requirement for ensureing that the experimental rig pressure boundary is complete.
The present invention, which is also provided, a kind of includes the detecting system of above-mentioned experimental rig.
Further, the detecting system also includes exhaust apparatus, pumping equipment, liquid supply device and voltage-stablizer, described
Exhaust apparatus, with being connected at the top of the experimental rig, is easy to the experimental rig to be vented in time by a blast pipe, described
Pumping equipment is connected with the discharging tube of the experimental rig, is easy to the discharge of liquid in the experimental rig, the fluid infusion dress
Put and be connected with the feed tube of the experimental rig, be easy to the experimental rig provide liquid, the voltage-stablizer with it is described enter
Liquid pipe is connected, and overpressure protection is provided for the experimental rig.
To sum up, the beneficial effects of the invention are as follows：The present invention fills for the experiment of test pressurized water reactor CRDM
Put and the detecting system containing the experimental rig, described experimental rig can simulate CRDM in pressurized water reactor
Working environment, as the cold and hot performance of pressurized water reactor CRDM and life assessment test provide needed for work
Condition, simplifies experimental rig, and the C＆P systems of prototype are replaced using C＆P systems simulating piece and Buffer Unit, are shortened
The installation length of experimental rig, about shortens half, greatly reduces manufacture and the installation difficulty of experimental rig, eliminates combustion
Expect the installation of component and C＆P systems, design Buffer Unit be used to meeting the requirement of true pressurized water reactor control rod buffering with
And protection drive rod, and be engaged to simulate waterpower ring during true pressurized water reactor control rod underthrust with Buffer Unit buffer bar
Border.Meet nuclear power plant's CRDM cold and hot performance test and the technical requirements of running adaptation.
Brief description of the drawings
Fig. 1 is the structural representation of the experimental rig shown in present pre-ferred embodiments；
The enlarged drawing that Fig. 2 is A in Fig. 1；
Fig. 3 is the structural representation of the detecting system shown in the embodiment of the present invention 2；
Mark and corresponding parts title in accompanying drawing：Pressure-bearing shell 1, drive rod 2, experimental rig 100, C＆P systems mould
Intend part 20, Buffer Unit 30, cylinder 11, upper cover 12, low head 13, interface of pressure measurement 111, feed tube 112, the first temperature
Measure interface 122, sealing flange 14, first flange 131, second flange 132, second temperature measurement interface 1311, discharging tube
1312nd, counterweight body 21, fixed column 22, buffer bar 23, buffering sleeve 31, buffer spring 32, upper bush 311, lower sleeve 312,
Support plate 3111, guide plate 3121, lead 3113, detecting system 200, exhaust apparatus 210, pumping equipment 220, liquid supply device
230th, blast pipe 211, voltage-stablizer 240.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the implementation of the present invention is not limited to this.
Embodiment 1
Fig. 1-2 is referred to, the experimental rig 100 shown in present pre-ferred embodiments, for entering to CRDM
Row performance test, including constitute the pressure vessel of a pressure boundary part, the C＆P systems being arranged in the pressure vessel
Simulating piece 20 and Buffer Unit 30.
The pressure vessel includes cylinder 11, is fixedly installed on the upper cover 12 and low head at the two ends of cylinder 11
13.The length of the pressure vessel meets the range demands of above-mentioned CRDM.The cylinder 11 is both ends open
Hollow structure, two openends of the cylinder 11 are connected with the upper cover 12 and the sealing of the low head 13 respectively, described
The side wall of cylinder 11 be provided with least one interface of pressure measurement 111 and feed tube 112, any interface of pressure measurement 111 with
One pressure sensor is engaged, for measuring in the pressure in the cylinder 11, the present embodiment, provided with two symmetrically arranged pressures
Power measures interface 111, and two interface of pressure measurement 111 is arranged at the top of the cylinder 11.The feed tube 112 is used for
The liquid (water for such as meeting test requirements document) that is for experiment enters the pressure vessel, and the feed tube 112 is preferably disposed on described
The middle part of cylinder 11.
The center of upper cover 12 offers the first through hole passed through for the pressure-bearing shell 1 of CRDM, and described
The installation gap of first through hole and the pressure-bearing shell 1, which is met, makes the complete requirement in the pressure boundary of the experimental rig 100.It is described
The side wall of upper cover 12 is provided with least one first temperature survey interface 122, any temperature of first temperature survey interface 122 and one
Degree sensor is engaged, the temperature for measuring the pressure vessel internal upper part, symmetrically arranged provided with two in the present embodiment
First temperature survey interface 122.To be fixedly connected with control rod driving structure, experimental rig 100 of the present invention also includes one
Sealing flange 14, the sealing flange 14 is fixedly connected by fixedly connected part (such as bolt) with the upper cover 12.It is described
The center of sealing flange 14 offers the second through hole passed through for the pressure-bearing shell 1, and the sealing flange 14 and the control rod
The pressure-bearing shell 1 of drive mechanism is fixedly connected, and specifically such as welding is fixedly connected with mode.The drive rod of the CRDM
2 pass through the pressure-bearing shell 1, stretch into inside the pressure vessel.
The low head 13 includes first flange 131 and second flange 132, the first flange 131 and described second
Flange 132 is fixedly connected by fixedly connected part (such as bolt), and the first flange 131 and the second flange 132 it
Between provided with pad to seal, such as with graphite wound gasket to seal.The first flange 131 is relative to the second flange 132
One end be tightly connected with the cylinder 11, the side wall of the first flange 131 connects provided with least one second temperature measurement
Mouth 1311 and discharging tube 1312, any second temperature measurement interface 1311 are engaged with a temperature sensor, for measuring
State in the temperature of pressure vessel inner bottom part, the present embodiment, provided with two symmetrically arranged second temperature measurement interfaces 1311.It is described
Discharging tube 1312 is used to discharge the liquid in the pressure vessel.
In addition, because experimental rig 100 of the present invention is the performance test for CRDM, thus it is described
Experimental rig 100 needs to meet the working condition requirement of pressurized water reactor primary Ioops cooling agent, i.e. design pressure 17.2MPa, design temperature
350 DEG C of degree, thus, the pressure vessel is provided with temperature-controlling module (not shown), for making to keep inside the pressure vessel
Predetermined temperature, the temperature-controlling module includes the control element of heating element heater and the control heating element heater, the present embodiment
In, the heating element heater is arranged at the outer wall of cylinder 11, and the heating element heater can be armoured electric heating element.
The C＆P systems simulating piece 20 and the pressure vessel, the first through hole and the second through hole coaxial line
Set, for simulating the load that C＆P systems are brought to drive rod 2, including coaxial counterweight body 21, fixed column 22 and
Buffer bar 23.The counterweight body 21 is engaged with the inwall of the cylinder 11, and the counterweight body 21 can relatively described cylinder
Body 11 is slided.The fixed column 22 is convexly equipped in the one end of the counterweight body 21 away from the low head 13, for the control
The drive rod 2 of rod drive mechanism processed is fixedly connected, and the end face of the fixed column 22, which in axial direction offers a fixing hole, (schemes not
Mark), the internal thread matched with the end external screw thread of the drive rod 2 is provided with the fixing hole, by the drive rod 2 with
The screw thread of the fixed column 22 coordinates so that the C＆P systems simulating piece 20 is fixed with the CRDM to be connected
Connect.The buffer bar 23 is arranged at one end of the relatively described fixed column 22 of the counterweight body 21.The diameter of the buffer bar 23
Less than the diameter of the counterweight body 21.
The Buffer Unit 30 is arranged at one end of the neighbouring low head 13 in the pressure vessel, including buffering sleeve
31 and buffer spring 32.The buffering sleeve 31 includes the upper bush 311 and lower sleeve 312 for the establishing conjunction that is nested.On described
Sleeve 311 and the buffer bar 23 are nested establishing conjunction, and the one end of the upper bush 311 away from the lower sleeve 312 is radially
Direction extend to be formed one annular support plate 3111, the end face for supporting plate 3111 and the counterweight body 21 offsets.Institute
The one end for stating lower sleeve 312 is sheathed in the upper bush 311, and the other end is fixedly connected with the low head 13.It is described to trap
Cylinder 312 coordinates with the gap of buffer bar 23, and gap coordinates between the lower sleeve 312 and the upper bush 311, is easy to work as institute
When stating buffer bar 23 and dropping in the buffering sleeve 31, the liquid in the buffering sleeve 31 can be from the lower sleeve 312
Gap outflow between gap and the lower sleeve 312 and the upper bush 311 between the buffer bar 23, outflow
Section is smaller, so as to play a part of waterpower buffering, and then drive rod 2 is protected, while being also insertion under simulation C＆P systems
Mechanical environment during cooling agent.Preferably, the unilateral gap between the lower sleeve 312 and the buffer bar 23 is no more than 1mm.
The guide plate 3121 of an annular is radially protruded out on the outer wall of the lower sleeve 312, the buffer spring 32 is arranged at institute
State and support between plate 3111 and the guide plate 3121, and the buffer spring 32 is sheathed on the upper bush 311 and described
Outside lower sleeve 312.The pilot hole of some insertions is offered on the guide plate 3121, accordingly, the plate 3111 that supports is protruded out
Have and pass through corresponding pilot hole with the one-to-one lead of the pilot hole 3113, any lead 3113 so that on described
Sleeve 311 plays a part of guiding during down or up relative to the lower sleeve 312, prevents the upper bush
311 disalignments.
The C＆P systems of prototype are replaced in the present invention using above-mentioned C＆P systems simulating piece 20 and Buffer Unit 30,
The installation length of experimental rig is shortened, half is about shortened, manufacture and the installation difficulty of experimental rig is greatly reduced, saved
The installation of fuel assembly and C＆P systems has been gone, water during simulation control rod underthrust is coordinated with Buffer Unit 30 and test(ing) liquid
Force environment.
Pressure vessel and control rod structure of the present invention is vertical slender structure, and draw ratio is larger, stability
It is poor, and be high-temperature, high pressure fluid in pressure vessel in experiment, pressure vessel and drive mechanism are in axis direction in process of the test
Will occur thermal expansion.Thus, while the strength and stability requirement of pressure vessel and drive mechanism is met, it must still consider
The influence of support is fixed in thermal expansion to pressure vessel.Based on considerations above, the present invention is in the middle and upper part side wall of the pressure vessel
Hanging support (not shown) is set, auxiliary supports (not shown) is set to the pressure vessel in the bottom of the pressure vessel
Carry out radial positioning.In this way, both can ensure that the fixation of the pressure vessel in radial directions with ensure the pressure vessel and
The stabilization of drive mechanism, can meet the pressure vessel in the requirement being free to move axially, can eliminate thermal expansion to driving machine again
The influence of structure axial deformation.
It is appreciated that to meet the exhaust requirements in process of the test, a blast pipe is connected in the top of the pressure vessel
(not shown).
Embodiment 2
Referring to Fig. 3, the detecting system 200 shown in second embodiment of the invention, including exhaust apparatus 210, pumping equipment
220th, the experimental rig 100 of structure shown in liquid supply device 230 and embodiment 1, by the cooperation between each device, there is provided examination
The duty parameters such as pressure, temperature, liquid level needed for testing.
The exhaust apparatus 210 is connected by a blast pipe 211 with the top of the experimental rig 100, is easy to described
Experimental rig 100 is vented in time.In the present embodiment, the exhaust apparatus 210 is blower fan.The blast pipe 211 is provided with temperature
Detector and air velocity detector.
The pumping equipment 220 is connected with the discharging tube 1312 of the experimental rig 100, is easy to the experimental rig
The discharge of liquid in 100.The discharging tube 1312 is provided with stop valve (figure is not marked).
The liquid supply device 230 is connected with the feed tube 112 of the experimental rig 100, is easy to the experimental rig
100 provide liquid.The feed tube 112 is provided with regulating valve (figure is not marked) and stop valve (figure is not marked).On the feed tube 112
A voltage-stablizer 240 is also communicated with, is that the experimental rig 100 provides overpressure protection.The voltage-stablizer 240 and the feed tube
112 pipelines being connected are provided with stop valve (figure is not marked).
Based on detecting system 200 of the present invention, cold state performance test, hot performance are deployed to CRDM
Experiment and running adaptation, and by the arrangement and analysis to result of the test, the machine with access control rod drive mechanism can be examined
Whether electrically mated performance and life-span meet design requirement.
Following steps can be specifically divided into by carrying out experiment using detecting system 200 of the present invention：Testing equipment
Install and debug, test preceding preparation, experiment development, test result analysis.
1. the installation and debugging of testing equipment
The sealing flange 14 and second flange 132 are opened, subjects (that is, CRDM) are stretched into described
In pressure vessel, and it is fixedly connected with the C＆P systems simulating piece 20, CRDM is arranged on the experiment
The top of device 100.
Interface of pressure measurement 111, the first temperature survey interface 122 and second temperature are provided with the pressure vessel again
Pressure sensor and temperature sensor are respectively correspondingly installed at the position for measuring interface 1311, and should be protected in installation process
Demonstrate,prove the pressure boundary integrality of the experimental rig 100.
After the installation of above equipment terminates, the pressure-bearing shell of the sealing flange 14 and the CRDM is welded and fixed
1, and the sealing sealing flange 14 and second flange 132 are closed, (it is welded and fixed the sealing flange 14 to drive with the control rod
The pressure-bearing shell 1 of motivation structure is completed before the sealing sealing flange 14 and second flange 132 is closed) check all pressure sides
Boundary and after confirming that sealing is errorless, the feed tube 112 for opening the experimental rig 100 carries out suppressing examination water, suppresses the result of examination water
The requirement of the pressure boundary integrality of experimental rig 100 should be met.
2. prepare before experiment
The experimental rig 100 of installation is installed in detecting system 200 as shown in Figure 2.
Before on-test, must to shown in Fig. 2 detecting system 200 carry out suppress examination water, it is ensured that its pressure boundary it is complete
Property.
3. experiment is carried out
Based on detecting system 200 of the present invention, the cold and hot state property for presurized water reactor CRDM can be carried out
Can experiment and running adaptation.Using time order and function as sequence, corresponding content of the test is introduced respectively.(cold state performance test and hot property
The operating condition of test that can be tested is different, and content is consistent)
1) cold and hot performance test
A) cold operation practical measurement of current is tested
Under cold test operating mode (normal temperature and pressure), the drive rod 2 of the CRDM is promoted to regulation high
Spend, action is put in the suction for completing the single pair of magnetic pole and armature of subjects, survey and record subjects in " single guarantor, patrilineal line of descent with only one son in each generation, list
Carry, load to place an order carry " etc. the lower minimum operate current value of action and maximum dropping current strength, and by above parameter with testing pair
The design load of elephant is compared.In above action process, the test for the stick location probe precision that subjects are carried is completed.It is right
Error result is analyzed, and judges whether to meet design requirement.Wherein, drive mechanism is by keeping, transmitting, lift three lines
The electromagnetic action of circle controls rising, underthrust and the holding of drive rod 2.
" single to protect "：In the case of transmission coil and lifting coil are cold, (no drive rod 2 when drive rod 2 is located at bottom
With the mass loading of C＆P systems simulating piece 20), individually control hold-in winding.(drive rod 2 refers to drive rod position positioned at bottom
Position when on Buffer Unit 30 is seated in bottom of travel, i.e. control rod simulated assembly 20)
" patrilineal line of descent with only one son in each generation "：In the case of hold-in winding and lifting coil are cold, (no drive rod 2 when drive rod 2 is located at bottom
With the mass loading of C＆P systems simulating piece 20), individually control hold-in winding.
" singly carrying "：In the case of transmission coil and hold-in winding are cold, (no drive rod 2 when drive rod 2 is located at bottom
With the mass loading of C＆P systems simulating piece 20), individually control hold-in winding.
" load, which places an order, to be carried "：In the case of transmission coil and hold-in winding are cold, when drive rod 2 is located at certain altitude
(mass loading for having drive rod 2 and C＆P systems simulating piece 20), individually controls hold-in winding.
B) cold stepping driving experiment
Under operating condition of test described in a), the step jump experiment of subjects is completed.In step jump experiment, complete documentation experiment
Three sets of object lifting, decline running current-time graph and audible signal, and when recording step jump operation, the mechanism action sound,
It is whether clear and legible with decision mechanism's action sound, if to there is magnetic pole and armature in step-out, sliding steps phenomenon and current curve
Whether clear and legible act audible signal.
C) cold conditions overtravel step jump experiment
Under operating condition of test described in a), subjects complete the step jump experiment of stipulated number.Observe and record experiment
Whether object occurs slide bar in overtravel step jump experiment, falls the anomalies such as rod, if occurring above anomaly, is unsatisfactory for
Design requirement.
D) cold conditions releases rod, Rod drop test
Under operating condition of test described in a), the total travel that subjects are completed into corresponding number of times is acted, to test experiment
Rod, the characteristic of scram are released in object total travel, record releases rod time delay and rod drop time, to judge whether the two meets design
It is required that.
E) thermal performance test
In the detecting system 200 shown in Fig. 2, stop valve is opened, and adjusts the aperture of regulating valve, voltage-stablizer is then adjusted
Electrical heating elements power in 240, by hot test operating mode of the test loop increasing temperature and pressure to needed for testing.
Under hot test operating mode, according to a) to d) progress thermal performance test.
2) running adaptation
A) life-span running adaptation
In detecting system 200 as shown in Figure 2, running adaptation is transferred to after performance test during 1) subjects complete,
In running adaptation, acted in subjects in certain step number, the lifting of total travel record complete set, decline running current-when
Half interval contour and audible signal, and hot operational factor and actuating coil resistance value are recorded simultaneously.In test process, record and judge
Mechanism step is quivered make the sound clear and legible, no step-out that gets the wrong sow by the ear, sliding steps phenomenon, is recorded and is judged magnetic pole and rank in current curve
Whether iron action audible signal is clear and legible, if the sound is clear and legible and without step-out, sliding steps phenomenon, meets design requirement.
During life-span running adaptation, rod is released in the Rod drop test for the certain number of times of drive rod 2 for recording subjects
Time delay, to judge whether scram delay meets design requirement.
During life-span running adaptation, subjects carry out the complete of the raising and lowering of certain step number at a given speed
Stroke action, finally walks test pressure and temperature stabilization during the requirement that galloping number meets projected life examination, running adaptation
In the scope of design of subjects.During step jump operation, record and judge whether the action sound of subjects is clear and legible, has
Without step-out, sliding steps phenomenon, whether magnetic pole and armature movement audible signal clear and legible in current curve, if the sound it is clear and legible and
Without step-out, sliding steps phenomenon, then design requirement is met.
After running adaptation, subjects are checked：Whether drive rod fastener there is loosening phenomenon (to judge annular groove
Abrasion is normal, uniform), and survey the insulating resistance value with writing task coil (to judge whether its insulation meets requirement).
4. test result analysis
1) cold and hot performance test is analyzed
Cold and hot performance test, the record data of running adaptation of binding tests object, judge be in above process of the test
No step-out, sliding steps occur, slide bar, fall the phenomenons such as rod, if there is above phenomenon, showing that subjects performance is unsatisfactory for design will
Ask, you can be determined as that subjects performance test is unqualified, vice versa.
2) running adaptation is analyzed
Subjects have been carried out after the running adaptation of regulation step number, subjects properties technical indicator and inspection result
Corresponding technical requirements whether are met, if meeting, show that subjects meet the requirement of life-span examination, the life-span meets design will
Ask, vice versa.
To sum up, the experimental rig 100 in detecting system 200 of the present invention can simulate control rod in pressurized water reactor
The cold and hot performance and life assessment test of the working environment of drive mechanism, as pressurized water reactor CRDM are provided
Required operating mode, simplifies experimental rig 100, and the control of prototype is replaced using C＆P systems simulating piece 20 and Buffer Unit 30
Rod assembly processed, shortens the installation length of experimental rig, about shortens half, greatly reduces manufacture and the peace of experimental rig
Difficulty is filled, the installation of fuel assembly and C＆P systems is eliminated, design Buffer Unit is used to meet true pressurized water reactor control
The requirement of rod buffering processed and protection drive rod, and be engaged to simulate true pressure water reaction with Buffer Unit 30 and buffer bar 23
Water-power environment during heap control rod underthrust.Meet nuclear power plant's CRDM cold and hot performance test and the skill of running adaptation
Art requirement.
As described above, the present invention can be realized preferably.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, according to
According to the present invention technical spirit, within the spirit and principles in the present invention, above example is made it is any it is simple modification,
Equivalent substitution and improvement etc., still fall within the protection domain of technical solution of the present invention.
Claims (10)
1. the experimental rig for testing pressurized water reactor CRDM, it is characterised in that including pressure vessel, set
In C＆P systems simulating piece and Buffer Unit in the pressure vessel, the length of the pressure vessel meets drive mechanism
Range demands, the pressure vessel be hollow structure, can contain and be offered at the top of experiment liquid, the pressure vessel
One through hole passed through for drive mechanism, and the installation gap satisfaction of the through hole and the pressure-bearing shell makes the pressure of the experimental rig
The complete requirement of force boundary, the drive rod of the drive mechanism is stretched into the pressure vessel and simulated with the C＆P systems
Part is fixedly connected, and the C＆P systems simulating piece is used to simulate the load that C＆P systems are brought to drive rod, and the control
Rod assembly simulating piece processed is coaxially disposed with the through hole, and the described one end of C＆P systems simulating piece away from the drive rod is protruded out
There is the buffer bar being engaged with the Buffer Unit, by the cooperation of the buffer bar and the Buffer Unit, for simulating control
Mechanical environment during cooling agent is inserted under rod assembly processed, the Buffer Unit is fixed on the pressure vessel inner bottom part.
2. experimental rig according to claim 1, it is characterised in that the Buffer Unit includes coaxial with the buffer bar
The buffering sleeve of setting, the buffering sleeve is fixed on the pressure vessel inner bottom part, and the internal diameter of the buffering sleeve is substantially big
In the external diameter of the buffer bar, when the buffer bar is stretched into the buffering sleeve, liquid in the buffering sleeve is from institute
The gap outflow between buffer bar and the buffering sleeve is stated, so as to realize to inserting mechanics during cooling agent under C＆P systems
The simulation of environment.
3. experimental rig according to claim 2, it is characterised in that the buffering sleeve includes upper bush and lower sleeve,
The upper bush is sheathed on outside the lower sleeve, and one end of the lower sleeve is sheathed in the upper bush, the other end with it is described
Pressure vessel bottom is fixedly connected, and the lower sleeve is no more than 1mm with the unilateral gap of the buffer bar diametrically.
4. experimental rig according to claim 3, it is characterised in that one end edge of the upper bush away from the lower sleeve
Radial direction extends to form annular supporting radially protrudes out annular guiding on plate, the outer wall of the lower sleeve
The pilot hole of some insertions is offered on plate, the guide plate, accordingly, described support has protruded out and the pilot hole one on plate
One corresponding lead.
5. experimental rig according to claim 4, it is characterised in that the Buffer Unit also includes buffer spring, described
Buffer spring is supported between plate and the guide plate described in being arranged at, and the buffer spring is sheathed on the upper bush and institute
State outside lower sleeve.
6. experimental rig according to claim 4, it is characterised in that the C＆P systems simulating piece also include with it is described
The coaxial counterweight body of buffer bar and fixed column, the counterweight body are fixedly arranged on the buffer bar away from the Buffer Unit
Side, for simulating the load that C＆P systems are brought to drive rod, the counterweight body can be relative to the pressure vessel
Inwall slide, and the balance weight assembly can support cooperation with the plate that supports, and the fixed column is fixedly arranged on the counterweight sheet
Side of the body away from the buffer bar, is fixedly connected for the drive rod with the drive mechanism.
7. experimental rig according to claim 1, it is characterised in that the side wall of the pressure vessel is externally provided with temperature control
Component, for controlling the temperature inside the pressure vessel, the temperature-controlling module includes heating element heater and control is described
The control element of heating element heater.
8. experimental rig according to claim 1, it is characterised in that offer at least one on the side wall of the pressure vessel
Individual interface of pressure measurement and at least one temperature survey interface, any interface of pressure measurement are engaged with a pressure sensor,
For measuring the pressure in the pressure vessel, any temperature survey interface is engaged with a temperature sensor, for measuring
The temperature in pressure vessel is stated, and the installation of the pressure sensor and the temperature sensor all should meet the guarantee examination
The complete requirement in experiment device pressure boundary.
9. a kind of detecting system of the experimental rig including as shown in any one of claim 1 to 8.
10. detecting system according to claim 9, it is characterised in that the detecting system also includes exhaust apparatus, discharge opeing
Device, liquid supply device and voltage-stablizer, the exhaust apparatus by a blast pipe with being connected at the top of the experimental rig, just
It is vented in time in the experimental rig, the pumping equipment is connected with the discharging tube of the experimental rig, is easy to the experiment
The discharge of liquid in device, the liquid supply device is connected with the feed tube of the experimental rig, is easy to the experimental rig
Liquid is provided, the voltage-stablizer is connected with the feed tube, and overpressure protection is provided for the experimental rig.
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| CN201710379259.5A CN107221363B (en) | 2017-05-25 | 2017-05-25 | Detect the system and its experimental rig of pressurized water reactor control rod drive mechanism performance |
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| CN201710379259.5A CN107221363B (en) | 2017-05-25 | 2017-05-25 | Detect the system and its experimental rig of pressurized water reactor control rod drive mechanism performance |
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| CN108735310A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of analog training device of control rod drive mechanism measurement of electric parameter |
| CN111028640A (en) * | 2019-11-11 | 2020-04-17 | 中广核研究院有限公司 | Thermal state test device for control rod drive wire and centering method thereof |
| CN111933318A (en) * | 2020-07-31 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Simulation elastic rod test device and method |
| CN111933317A (en) * | 2020-07-01 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Device and method for detecting thermal state performance of control rod driving mechanism |
| CN112017801A (en) * | 2020-07-31 | 2020-12-01 | 清华大学 | Built-in capacitive rod position measuring sensor and control rod hydraulic drive system |
| CN112530612A (en) * | 2020-11-27 | 2021-03-19 | 中广核研究院有限公司 | Hydraulic simulator of control rod guide cylinder assembly |
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| CN108735310A (en) * | 2018-06-04 | 2018-11-02 | 江苏核电有限公司 | A kind of analog training device of control rod drive mechanism measurement of electric parameter |
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| CN111028640A (en) * | 2019-11-11 | 2020-04-17 | 中广核研究院有限公司 | Thermal state test device for control rod drive wire and centering method thereof |
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| CN111933318A (en) * | 2020-07-31 | 2020-11-13 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Simulation elastic rod test device and method |
| CN112017801A (en) * | 2020-07-31 | 2020-12-01 | 清华大学 | Built-in capacitive rod position measuring sensor and control rod hydraulic drive system |
| CN112017801B (en) * | 2020-07-31 | 2022-09-09 | 清华大学 | Built-in capacitive rod position measuring sensor and control rod hydraulic drive system |
| CN112530612A (en) * | 2020-11-27 | 2021-03-19 | 中广核研究院有限公司 | Hydraulic simulator of control rod guide cylinder assembly |
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| CN107221363B (en) | 2019-03-12 |
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