CN109166635B - Integrated integral support device for multi-container system - Google Patents
Integrated integral support device for multi-container system Download PDFInfo
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- CN109166635B CN109166635B CN201810865942.4A CN201810865942A CN109166635B CN 109166635 B CN109166635 B CN 109166635B CN 201810865942 A CN201810865942 A CN 201810865942A CN 109166635 B CN109166635 B CN 109166635B
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- 239000003381 stabilizer Substances 0.000 claims abstract description 64
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 230000001629 suppression Effects 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 56
- 230000000670 limiting effect Effects 0.000 claims description 53
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- 230000003139 buffering effect Effects 0.000 claims description 4
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- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 abstract description 16
- 239000000725 suspension Substances 0.000 abstract description 5
- 230000035882 stress Effects 0.000 description 31
- 230000008646 thermal stress Effects 0.000 description 19
- 230000002829 reductive effect Effects 0.000 description 12
- 206010016256 fatigue Diseases 0.000 description 11
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/024—Supporting constructions for pressure vessels or containment vessels
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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 relates to an integrated integral support device for a multi-vessel system comprising a suppression pool, a pressure vessel, a steam generator, a main pump, and a pressure stabilizer disposed within a reaction chamber. The integrated integral supporting device comprises a first supporting unit, a third supporting unit and a foundation support, wherein the pressure suppression pool, the pressure vessel, the steam generator, the main pump and the pressure stabilizer are all arranged on the foundation support. The upper side of the pressure suppression pool defines a concave equipment cavity, and the pressure vessel, the steam generator, the main pump and the pressure stabilizer are all positioned in the equipment cavity and isolated from the lower side of the equipment cavity. The integrated integral supporting device provides high-rigidity support for main equipment with large span and high suspension, and limits the relative displacement of the main equipment which is unfavorable for the stress of connecting the main pipe; the load is transferred to the reaction cabin of the reactor, the thermal displacement generated by the primary loop of the reactor is released, the inertial load and the external impact load caused by the periodic alternating load of the marine environment are resisted, and the reliability and the safety are improved.
Description
Technical Field
The present invention relates to the field of nuclear power, and more particularly to an integrated integral support device for a multi-vessel system.
Background
The pressure vessel in the primary loop of the reactor is a positioning center, and forms a closed loop with main equipment such as a steam generator, a main pump and the like through pipelines. The compact arrangement of the small stacks corresponding to the device adopts short sleeve connection with higher rigidity, and the supporting device must be capable of better limiting the relative displacement of each main device so as to prevent the short pipe from being damaged due to overlarge stress. At the same time, when the primary equipment of the primary circuit starts and stops, the primary equipment generates thermal expansion and thermal displacement due to temperature change, and the supporting device should release the thermal expansion and the thermal displacement, otherwise, the thermal stress suffered by the primary equipment and the short sleeve pipe exceeds allowable stress to be destroyed.
The device is complex in stress in marine environment, and superimposes continuously existing alternating inertial load and instantaneous impact load, and belongs to multi-field coupling effect of multi-force field and temperature field. The continuous periodic alternating load acts on primary equipment of a loop for a long time, and fatigue risks can be caused at weak points such as pipeline welding seams among the equipment. While the instantaneous impact load values are larger, a greater stiffness and strength of the support is required to limit the displacement of the pressure vessel. This requires a loop master to support various loads (including cyclic alternating loads) that the master is effectively loaded against while having a degree of lateral freedom to release thermal expansion to reduce thermal stresses, limit relative displacement of equipment other than thermal stresses, and optimize pipeline stresses.
In ocean platforms, compact stacks are arranged in the center of the reactor compartment, with the main load-bearing structures being the side walls and floor of the reactor compartment. The main equipment pivot point must be arranged near the main pipe in the middle of the equipment, and has a large distance from the stacking compartment bearing structure, namely a vertical space or a horizontal space. The compact arrangement of reactor main equipment is connected by short bushings and the overall mass of the equipment is large, susceptible to tipping or instability at large distances from both horizontal and vertical load bearing infrastructure, requiring a highly rigid integral support structure to provide the load bearing foundation. Meanwhile, a suppression pool for safety measures is arranged at the lower part of the reactor cabin to surround the main equipment, so that the main equipment is isolated to prevent the suppression pool from being soaked and corroded for a long time.
In the reactor with compact arrangement, the main containers are vertical containers, the steam generator and the main pump have large length-diameter ratio and higher gravity center, and the reactor is equipment with poor earthquake resistance in the whole reactor coolant system. When the reactor runs, cold and hot state changes exist, the temperature changes cause the equipment to generate thermal expansion and thermal displacement, the upper horizontal support is limited to release the equipment expansion, and the damage of the support equipment due to overlarge thermal stress is avoided.
The ocean platform is also superimposed with long-term alternating load and external impact load. The external impact load and the alternating load periodically cause the rolling, pitching, leaning, pitching and heaving of the container, so that the bending moment and stress borne by the lower support of the container are increased, the container is in a tipping risk, and the weak parts such as pipeline welding seams among devices are easy to generate fatigue risk. Horizontal support is therefore required to effectively balance various loads (including cyclic alternating and impact loads) and maintain the equipment in a steady state.
Disclosure of Invention
The object of the present invention is to provide an integrated support device for a multi-container system.
The technical scheme adopted for solving the technical problems is as follows: constructing an integrated integral supporting device for a multi-container system, wherein the multi-container system comprises a pressure suppression tank, a pressure container, a steam generator, a main pump, a pressure stabilizer and a connecting pipeline, wherein the pressure suppression tank, the pressure container, the steam generator, the main pump, the pressure stabilizer and the connecting pipeline are arranged in a reaction chamber;
The steam generator is connected with the pressure vessel through a first pipeline, the main pump is connected with the pressure vessel through a second pipeline, and the pressure stabilizer is connected with the steam generator through a pipeline;
The integrated supporting device comprises an upper support, a middle support and a foundation support, wherein the pressure suppression pool, the pressure vessel, the steam generator, the main pump and the pressure stabilizer are all arranged on the foundation support;
The upper side of the pressure suppression pool defines a concave equipment cavity, the upper side of the foundation support forms the bottom surface of the equipment cavity, and the pressure vessel, the steam generator, the main pump and the pressure stabilizer are all positioned in the equipment cavity and isolated from the lower side of the equipment cavity;
The height position of the upper support is higher than that of the middle support;
The middle support supports the steam generator, the main pump and the pressure vessel respectively to limit the thermal displacement of the steam generator overlapped by the moving and releasing system along the axial direction of the first pipeline and the thermal expansion of the steam generator, limit the thermal displacement of the main pump overlapped by the moving and releasing system along the axial direction of the second pipeline and the thermal expansion of the main pump and release the self-expansion displacement of the pressure vessel along the radial direction;
the upper support is arranged on one side, away from the pressure vessel, of the steam generator and the main pump respectively, and limits the steam generator and the main pump.
Preferably, the foundation support comprises a support base, a support platform arranged on the upper side of the support base, and at least two support columns arranged in the horizontal direction and mutually crossed, wherein each support column is connected with the support base, and the end parts of the support columns are connected with the inner wall of the reactor cabin.
Preferably, the support platform is respectively provided with a first sleeve hole and a second sleeve hole which respectively correspond to the sectional external dimensions of the pressure vessel and the steam generator, the first sleeve hole is sleeved on the outer ring of the pressure vessel, and the second sleeve hole is sleeved on the outer ring of the steam generator; the support base is provided with counter bores corresponding to the first set of holes and the second set of holes, and the periphery of each counter bore is provided with a reinforcing rib connected with the support base.
Preferably, the foundation support further comprises an anti-shaking partition plate for separating the lower side of the support platform in the horizontal direction, the anti-shaking partition plate is fixedly connected with the support base and the outer wall surface of the counter bore, and the anti-shaking partition plate is provided with a circulation hole for communicating two sides.
Preferably, the steam generator comprises at least two steam generators, the steam generators are arranged on the periphery of the pressure container in a central symmetry manner, the main pump comprises at least two steam generators, the main pump is arranged on the periphery of the pressure container in a central symmetry manner, the steam generators and the main pump are alternately arranged on the periphery of the pressure container and are uniformly distributed at intervals on the periphery of the pressure container, the steam generators are respectively connected with the pressure container through first pipelines, and the main pump is respectively connected with the pressure container through second pipelines;
The middle support comprises a plurality of first support units, wherein one side of each steam generator, which is opposite to the pressure vessel, is provided with the first support units, supports the steam generator, and limits the thermal displacement of the steam generator superimposed by a moving and releasing system along the axial direction of the first pipeline and the thermal expansion of the steam generator;
the first supporting units are arranged on one side of each main pump, which is opposite to the pressure vessel, and are used for supporting the main pumps and limiting the thermal displacement of the main pumps and the thermal expansion of the main pumps, which are overlapped by the movement and release systems of the main pumps along the axial direction of the second pipeline;
the circumference of the pressure container is distributed with a plurality of first supporting units, and the pressure container is released to self-expand and displace in the radial direction.
Preferably, the first support unit includes a first support key for being mounted on a corresponding side of the pressure vessel, the steam generator, the main pump and extending in a horizontal direction, and a first support assembly for supporting the first support key;
The first support assembly is provided with a sliding hole corresponding to the appearance of the first support key, the first support key is inserted into the sliding hole, a gap is reserved between the first support key and the sliding hole, and when the first support key moves along with the expansion of the pressure container, the steam generator and the main pump, the first support key expands and is tightly matched with the sliding hole.
Preferably, the first supporting assembly comprises a first base and an upper cover detachably mounted on the upper side of the first base, the first base and the upper cover are spliced to form the sliding hole, and the cross sections of the first supporting key and the sliding hole are non-circular;
the first base comprises a base body and two stop blocks vertically arranged on the base body, the two stop blocks are arranged at intervals, the upper cover is connected between the upper ends of the two stop blocks, and the upper cover is enclosed with the base body and the stop blocks to form the sliding hole.
Preferably, at least one of the two horizontal opposite sides of the sliding hole is provided with an adjusting unit for adjusting the width dimension of the sliding hole in the horizontal direction;
the adjusting unit includes a first adjusting plate for adjusting a width of the sliding hole in a horizontal direction;
a side sliding plate which is in sliding fit with the first adjusting plate is arranged on the side surface of the first supporting key opposite to the first adjusting plate;
a sliding unit is arranged on the side surface of the sliding hole opposite to the lower side surface of the first supporting key, so that the first supporting key can move along the axial direction of the sliding hole;
the sliding unit includes a first sliding plate; the lower side of the first supporting key is provided with a horizontal sliding plate which is in sliding fit with the first sliding plate.
Preferably, the steam generator comprises at least two steam generators, the steam generators are arranged on the periphery of the pressure container in a central symmetry manner, the main pump comprises at least two steam generators, the main pump is arranged on the periphery of the pressure container in a central symmetry manner, the steam generators and the main pump are alternately arranged on the periphery of the pressure container and are uniformly distributed at intervals on the periphery of the pressure container, the steam generators are respectively connected with the pressure container through first pipelines, and the main pump is respectively connected with the pressure container through second pipelines;
the upper support comprises a plurality of third support units, at least two third support units are arranged on the outer wall surface of each steam generator along the circumferential direction, one end of each third support unit is connected with the steam generator, the other end of each third support unit extends out and is fixed in a direction away from the pressure vessel, and each third support unit outside each steam generator is horizontally symmetrical relative to the axis of a first pipeline connected with the corresponding steam generator;
at least two third supporting units are arranged on the outer wall surface of each main pump along the circumferential direction, one end of each third supporting unit is connected with the main pump, the other end of each third supporting unit extends out and is fixed in the direction away from the pressure container, and the third supporting units outside each main pump are horizontally symmetrical relative to the axis of the second pipeline connected with the corresponding main pump.
Preferably, the third supporting units extend out in the horizontal direction and are respectively positioned at the upper ends of the steam generator and the main pump.
Preferably, the third supporting unit comprises a first supporting lug and a third supporting component, and each first supporting lug is respectively arranged on the outer wall surfaces of the steam generator and the main pump;
one end of each third supporting component is rotationally connected with the first supporting lug, and the other end of each third supporting component extends out in a direction away from the pressure container and is fixedly installed;
the extending direction of the third supporting component connected with the steam generator and the axis included angle of the first pipeline connected with the corresponding steam generator are acute angles;
And an included angle between the extending direction of the third supporting component connected with the main pump and the axis of the corresponding second pipeline connected with the main pump is an acute angle.
Preferably, two third supporting units are provided on an outer wall surface of each of the steam generators;
The first lugs of each third supporting unit on the outer wall surface of the steam generator extend outwards along the radial direction of the corresponding steam generator and are perpendicular to the axis of a first pipeline connected with the corresponding steam generator;
Two third supporting units are arranged on the outer wall surface of each main pump;
The first lugs of each third support unit on the outer wall surface of the main pump extend outward in the radial direction of the corresponding main pump and are perpendicular to the axis of the second pipe connected with the corresponding main pump.
Preferably, the included angle of the two third support assemblies outside each of said steam generators is less than 180 degrees;
The included angle of the two third supporting components outside each main pump is smaller than 180 degrees;
the third supporting assembly comprises a first damper and a first support, the first damper is connected between the first support and the first supporting lug, and the first support is fixedly installed.
Preferably, the integrated support device further comprises a second support unit for supporting and defining a displacement range on a horizontal plane;
And the two horizontal sides of the first pipeline are respectively provided with a second supporting unit for supporting the steam generator, and the self-expansion of the steam generator and the thermal expansion of the system superimposed to the steam generator are released.
Preferably, the second supporting unit includes a second supporting assembly and a sliding seat assembly;
the second supporting components are arranged on the corresponding side surfaces of the steam generator and extend out along the horizontal side direction;
The sliding seat body assembly is provided with a horizontally arranged supporting surface, and the second supporting assembly can be matched with the sliding seat body assembly in a sliding manner along the supporting surface in the horizontal direction so as to release the thermal displacement of the steam generator on the horizontal plane and limit the displacement range on the horizontal plane.
Preferably, the second support assembly includes a horizontally extending second support key;
The second supporting component further comprises an adjusting sliding plate fixedly connected with the second supporting key, and the adjusting sliding plate is in sliding fit with the supporting surface;
The sliding seat body assembly comprises a second sliding plate, the supporting surface is formed on the second sliding plate, the supporting surface is in sliding fit with the second supporting assembly, and relative sliding is generated when the steam generator releases thermal displacement;
The sliding seat body assembly further comprises a second base, and the second sliding plate is arranged on the second base;
the sliding seat assembly further includes a second adjustment plate for mounting the second base.
Preferably, the second base is provided with a lateral limiting mechanism for limiting the lateral position of the second supporting component on the horizontal plane;
the lateral limiting mechanism comprises two groups of limiting units positioned on two horizontal opposite sides of the second supporting component, and each limiting unit comprises a positioning table and limiting pieces arranged on the positioning table;
one end of the limiting piece is opposite to the side face of the second supporting component, and the axial position of the limiting piece on the positioning table is adjustable so as to adjust the distance between the two limiting pieces.
Preferably, the second supporting unit further includes an axial limiting mechanism connected between the second supporting assembly and the sliding seat assembly to limit the displacement amount of the second supporting assembly and the sliding seat assembly in the extending direction of the second supporting assembly;
The axial limiting mechanism comprises a connecting rod arranged along the extending direction of the second supporting component, a first lock hole and a second lock hole are respectively arranged at two ends of the connecting rod, and locking elements connected with the second supporting component and the sliding seat body component are respectively arranged in the first lock hole and the second lock hole in a penetrating manner;
At least one of the first lock hole and the second lock hole is a kidney-shaped hole extending along the extending direction of the second supporting component so as to enable the second supporting component and the sliding seat body component to slide relatively and limit the sliding displacement.
Preferably, the lower end of the pressure stabilizer is connected with the steam generator through a flexible long tube, the integrated supporting device further comprises a tube supporting unit for fixedly supporting the flexible long tube, the tube supporting unit comprises a tube clamp and a supporting mechanism, the tube clamp is installed on the flexible long tube, one end of the supporting mechanism is connected with the tube clamp, the other end of the supporting mechanism is fixedly arranged, and the supporting mechanism is of an elastic deformation structure so as to release impact load borne by the flexible long tube.
Preferably, the support mechanism includes a fourth support assembly that elastically supports the flexible long tube in a vertical direction;
The fourth supporting component comprises an elastic piece which can stretch out and draw back and a cylindrical body which is sleeved outside the elastic piece, the upper end of the elastic piece is connected with the pipe clamp, and the lower end of the elastic piece is fixedly installed.
Preferably, the fourth supporting assembly further includes a positioning mechanism that defines a deformation amount of the elastic member to be deformed downward;
the positioning mechanism comprises a vertically arranged positioning piece, and one end of the positioning piece is fixedly arranged;
The other end of the positioning piece is positioned between the upper end and the lower end of the elastic piece, and a deformation section for compression deformation of the elastic piece is formed between the ends corresponding to the elastic piece.
Preferably, the upper end of the positioning piece is in positioning connection with the upper end of the elastic piece, and the lower end of the positioning piece is arranged in a suspending manner;
The positioning mechanism further comprises a resisting part arranged at the lower end of the elastic piece, wherein the resisting part is spaced from the lower end of the positioning piece, limits the downward moving position of the lower end of the positioning piece, and limits the deformation of the elastic piece during downward compression;
The elastic piece is arranged in the cylinder body, a baffle plate for preventing the elastic piece from being pulled out upwards is arranged at the upper end of the cylinder body, and a through hole is formed in the baffle plate;
And a connecting piece is connected between the upper end of the elastic piece and the pipe clamp, and the connecting piece can vertically movably penetrate through the through hole.
Preferably, the support mechanism includes a fifth support assembly disposed obliquely for elastically supporting in an oblique direction;
The fifth supporting component comprises at least one group of second dampers, one ends of the second dampers are connected with the pipe clamps, and the other ends of the second dampers are fixedly installed.
Preferably, the flexible long tube comprises a plurality of sections of tube sections which are arranged in a bending way, and part or all of the tube sections are provided with the supporting mechanism;
the supporting mechanism is arranged at the middle position of the corresponding pipe section; the elastic deformation direction of the supporting mechanism is perpendicular to the axis of the pipe section at the corresponding position.
Preferably, the supporting base comprises a second support seat supported at the lower end of the voltage stabilizer, the second support seat comprises a cylindrical supporting cylinder with a vertically arranged axis, and the upper end of the supporting cylinder is fixedly connected with the lower end of the voltage stabilizer to support the voltage stabilizer.
Preferably, the integrated supporting device further comprises at least two groups of limiting supporting units, wherein the limiting supporting units are distributed on the outer ring of the upper end of the voltage stabilizer, and each limiting supporting unit is arranged at intervals with the outer wall of the upper end of the voltage stabilizer to limit the horizontal position of the voltage stabilizer under the condition of impact load;
The limiting supporting unit comprises a supporting head which extends towards the side wall surface of the voltage stabilizer, the supporting head is arranged in a position-adjustable mode in the radial direction of the voltage stabilizer, and a buffer layer capable of buffering is arranged at the end portion, opposite to the voltage stabilizer, of the supporting head.
The integrated integral support device for a multi-container system embodying the present invention has the following beneficial effects: the integrated integral supporting device provides high-rigidity basic support for main equipment with large span and high suspension in a multi-container system, and limits the relative displacement of the main equipment which is unfavorable for the stress of the connecting main pipes such as a first pipeline, a second pipeline and the like; the integrated integral supporting device transmits the load borne by the main equipment to the foundation support, further transmits the load to the reaction cabin of the reactor, releases the thermal displacement generated by the primary loop of the reactor, effectively resists the inertial load and the external impact load caused by the periodic alternating load of the marine environment, and improves the reliability and the safety of the equipment.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic view of a structure in which a pressure vessel, a steam generator, a main pump, and a pressure stabilizer of a multi-vessel system according to an embodiment of the present invention are installed on a holding tank;
FIG. 2 is a schematic view of an assembled structure of the pressure vessel, steam generator, main pump, pressure regulator and support platform of FIG. 1;
FIG. 3 is a schematic top view of the multi-container system of FIG. 1;
FIG. 4 is a schematic top view of the support platform and support column of the foundation support of FIG. 2;
FIG. 5 is a schematic structural view of the partial view A of FIG. 2;
FIG. 6 is a schematic side view of the first support unit of FIG. 5;
Fig. 7 is a schematic structural view of the second supporting unit in fig. 2;
fig. 8 is a schematic cross-sectional structure of the second supporting unit in fig. 2;
fig. 9 is a schematic structural view of the third supporting unit in fig. 3;
FIG. 10 is a schematic side view of the voltage regulator of FIG. 2 mounted on a second mount of a support base;
FIG. 11 is a schematic perspective view of the flexible long tube of FIG. 10 with a tube support unit mounted thereon;
FIG. 12 is a schematic cross-sectional view of the fourth support assembly of FIG. 11;
Fig. 13 is a schematic side view of the spacing support unit of fig. 10.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1 to 3, the multi-vessel system in a preferred embodiment of the present invention includes a reaction chamber (not shown), and a suppression pool 61, a pressure vessel 62, a steam generator 63, a main pump 64, a pressure stabilizer 65, and connecting pipes disposed in the reaction chamber, the steam generator 63 including two, being disposed in a center-symmetrical manner around the pressure vessel 62, the main pump 64 including two, being disposed in a center-symmetrical manner around the pressure vessel 62, the steam generator 63, the main pump 64 being alternately disposed around the pressure vessel 62, and being uniformly spaced around the pressure vessel 62.
The steam generator 63 is connected to the pressure vessel 62 through a first pipe 631, the main pump 64 is connected to the pressure vessel 62 through a second pipe 641, and the pressure stabilizer 65 is connected to the steam generator 63 through a pipe, such as a flexible long pipe 651. In other embodiments, the number of steam generators 63 and main pumps 64 may be one or more than two, among other numbers. Generally, after the steam generator 63 or the main pump 64 is connected to the pressure vessel 62 through pipes, respectively, the steam generator 63 or the main pump 64 itself thermally expands and the superimposed system thermally expands in the axial direction of the pipes.
The pressure vessel 62, the steam generator 63, the main pump 64 and the pressure stabilizer 65 are main devices of the reactor, the pressure vessel 62 is used as a positioning center of the whole reactor, the center position of the devices is unchanged, and a closed loop is formed with the steam generator 63 and the main pump 64 through pipelines.
When the reactor is in a cold state, the centers of all main equipment of a loop are positioned in the cold state position. The temperature of each main equipment in a loop changes between room temperature and the operating temperature of the reactor when the main equipment starts and stops, so that the reactor pressure vessel 62 generates thermal expansion due to the temperature change, and the steam generator 63 and the main pump 64 generate thermal expansion themselves and also generate thermal displacement by overlapping the thermal elongation of the pipelines.
Further, an integrated integral support device is arranged outside the multi-container system, the integrated integral support device comprises an upper support, a middle support and a base support 4, the base support 4 is arranged at the bilge of the reaction chamber, and a pressure suppression tank 61, a pressure container 62, a steam generator 63, a main pump 64 and a pressure stabilizer 65 are all arranged on the base support 4.
The upper side of the hold-down tank 61 defines a concave equipment chamber 611, and the pressure vessel 62, the steam generator 63, the main pump 64, and the pressure stabilizer 65 are all located in the equipment chamber 611 and isolated from the lower side of the equipment chamber 611. The hold-down tank 61 encloses and isolates the main equipment such as the pressure vessel 62, the steam generator 63, the main pump 64, the pressure stabilizer 65, etc. from the underside, preventing the main equipment from being immersed in water in the lower portion of the hold-down tank 61 for a long period of time and corroding the main equipment.
The height of the upper support is higher than that of the middle support, so that the upper support, the middle support and the foundation support 4 support the main equipment at different heights respectively.
The intermediate support supports the steam generator 63, the main pump 64 and the pressure vessel 62, respectively, to define a thermal displacement of the steam generator 63 superimposed on the movement and release system of the steam generator 63 in the axial direction of the first pipe 631 and a thermal expansion of the steam generator 63 itself, to define a thermal displacement of the main pump 64 superimposed on the movement and release system of the main pump 64 in the axial direction of the second pipe 641 and a thermal expansion of the main pump 64 itself, and to release a self-expanding displacement of the pressure vessel 62 in the radial direction;
The upper support is provided on the side of the steam generator 63 and the main pump 64 facing away from the pressure vessel 62, respectively, and limits the steam generator 63 and the main pump 64.
The integrated integral supporting device transmits the load borne by the main equipment to the foundation support, further transmits the load to the reaction cabin of the reactor, releases the thermal displacement generated by the primary loop of the reactor, effectively resists the inertial load and the external impact load caused by the periodic alternating load of the marine environment, and improves the reliability and the safety of the equipment.
Further, the middle support includes a plurality of first support units 1, in this embodiment, a side of each steam generator 63 opposite to the pressure vessel 62 is provided with the first support units 1, which support the steam generator 63 and limit the thermal displacement of the steam generator 63 superimposed by the movement and release system of the steam generator 63 in the axial direction of the first pipe 631 and the thermal expansion of the steam generator 63 itself.
The side of each main pump 64 opposite to the pressure vessel 62 is provided with a first supporting unit 1 that supports the main pump 64 and restricts the thermal displacement of the main pump 64 superimposed on the movement and release system of the main pump 64 in the axial direction of the second pipe 641 and the thermal expansion of the main pump 64 itself.
The circumference of the pressure vessel 62 is distributed with a plurality of first support units 1, releasing the self-expanding displacement of the pressure vessel 62 in the radial direction.
The first support unit 1 is installed between the base support 4 and the steam generator 63 and the pressure vessel 62, and the first support unit 1 is integrally connected with the base support 4, thereby improving the stability of the support.
The horizontal both sides of the first pipe 631 are respectively provided with second supporting units 2 supporting the steam generator 63, and release self-expansion of the steam generator 63 and thermal expansion of the system superimposed to the steam generator. The second support unit 2 is installed between the base support 4 and the steam generator 63, and the second support unit 2 is integrally connected with the base support 4, thereby improving the stability of the support. In other embodiments, the second supporting unit 2 may be omitted, and the displacement of each main device may be limited by supporting the main device by the first supporting unit 1 and the third supporting unit 3.
Further, the upper support includes a plurality of third support units 3, in this embodiment, two third support units 3 are circumferentially disposed on an outer wall surface of each steam generator 63, one end of each third support unit 3 is connected to the steam generator 63, and the other end extends and is fixed in a direction away from the pressure vessel 62, and each third support unit 3 outside each steam generator 63 is horizontally symmetrical with respect to an axis of the first pipe 631 connected to the corresponding steam generator 63.
Two third supporting units 3 are circumferentially provided on the outer wall surface of each main pump 64, one end of each third supporting unit 3 is connected to the main pump 64, the other end extends and is fixed in a direction away from the pressure vessel 62, and the third supporting units 3 outside each main pump 64 are horizontally symmetrical with respect to the axis of the second pipe 641 connected to the corresponding main pump 64.
The end of the third support unit 3 remote from the pressure vessel 62 is fixedly mounted to the side wall of the reaction chamber, improving the stability of the support. Preferably, the third support unit 3 is positioned at a higher level than the first support unit 1, supporting each main equipment of the reactor-loop in layers.
The third supporting unit 3 of the upper layer is supported for the horizontal direction of the upper part of the main equipment, and releases heat expansion when the cold and hot state of the main equipment changes; under the working conditions of periodic alternating load, earthquake or accident and other horizontal impact load of the marine environment, the main equipment is kept in a stable state to limit the horizontal displacement of the upper part of the main equipment, so that the bending moment and stress borne by the lower support are reduced, and the risk of overturning the container is reduced.
The first supporting unit 1 and the second supporting unit 2 at the lower layer adopt a modularized design, and for main equipment such as a compact pressure vessel 62, a steam generator 63, a main pump 64 and the like, the modularized design structure enables the whole supporting structure to be simple, occupies small space, saves the space for compactly arranging the reactor nuclear island, and is convenient for the installation, operation and maintenance of other components of the nuclear island.
The bottom is provided with a high rigidity foundation support 4 for large-span and high-suspension main equipment through an integrated integral foundation support 4, so that the relative displacement of the main equipment which is unfavorable for the stress of connecting the main pipe is limited.
The first supporting unit 1 and the second supporting unit 2 are respectively arranged on the foundation support 4, one end of the third supporting unit 3, which is far away from the pressure vessel 62, is fixed on the side wall of the reaction chamber, and each supporting structure of the integrated integral supporting device is fixedly connected with the reaction chamber to form an integral support, so that stable support can be formed for each main equipment.
The integrated integral supporting device provides a high-rigidity foundation support 4 for large-span and high-suspension main equipment, and limits the relative displacement of the main equipment which is unfavorable for the stress of the connecting main pipes of the first pipeline 631, the second pipeline 641 and the like; the integrated integral supporting device transmits the load born by the main equipment to the foundation support 4, further transmits the load to the reaction cabin of the reactor, releases the thermal displacement generated by the primary loop of the reactor, effectively resists the inertial load and the external impact load caused by the periodic alternating load of the marine environment, and improves the reliability and the safety of the equipment.
The foundation support 4 includes a support base 41, a support platform 42 provided on an upper side of the support base 41, and at least two support columns 43 provided in a horizontal direction and intersecting each other. Typically, the suppression pool 61 itself is a shell structure, the base support 4 is welded to each surface of the suppression pool 61, the upper side of the base support 4 forms the bottom surface of the equipment cavity 611, that is, the support platform 42 forms the bottom surface of the equipment cavity 611, and the first support unit 1 and the second support unit 2 are typically mounted on the support platform 42.
The support base 41 is a frame-type support structure, and typically includes a column structure that performs main support, each support column 43 is connected to the support base 41, and an end of the support column 43 is connected to the inner wall of the reactor compartment.
The foundation support 4 is combined with the support base 41 by a unique support platform 42, the overall foundation support 4 having both a high level and axial stiffness. The whole foundation support 4 is completely positioned in a degree of freedom, has the capability of bearing heavy equipment or systems, and can provide guarantee for effectively limiting the relative displacement of all main equipment of a loop. Under the condition that the main equipment and the reaction cabin bearing point are suspended in a large span in the horizontal direction and in a high suspension in the vertical direction, the foundation support 4 is provided, the vertical load and the horizontal load are transferred, and the shock resistance is good.
As shown in fig. 1 to 4, the support platform 42 is horizontally arranged, the support platform 42 is respectively provided with a first sleeve hole 421, a second sleeve hole 422 and a third sleeve hole corresponding to the cross-section outline dimensions of the pressure vessel 62 and the steam generator 63, the first sleeve hole 421 is sleeved on the outer ring of the pressure vessel 62, the second sleeve hole 422 is sleeved on the outer ring of the steam generator 63, the pressure vessel 62 and the steam generator 63 are supported, and the rigidity in the horizontal direction is enhanced by the support platform 42. The supporting platform 42 is usually mounted on the foundation support 4, and the supporting area of the supporting platform 42 is increased, so that loads in all directions can be dispersed, and the bearing capacity is improved.
The support base 41 is provided with the counter bores 411 corresponding to the first sleeve holes 421 and the second sleeve holes 422, the foundation support 4 also integrally connects the plurality of independent pressure containers 62, the steam generators 63 and the counter bores 411 through the connecting rib plates, and the integral design method improves the structural rigidity of the counter bores 411 of the primary loop equipment, and can avoid fatigue failure caused by long-term ocean periodic alternating load of the counter bores 411 in the service life.
The foundation support 4 transfers the inertial loads caused by the ocean operating conditions, including roll, pitch, heave, etc., and the static loads generated by the weight of a loop main equipment and its accessories, pipes, etc., to the bulkhead face of the reaction chamber through the support base 41 and the transverse support columns 43, providing a stable and reliable foundation support 4 for the loop equipment.
The periphery of each counter bore 411 is provided with the reinforcing rib 412 connected with the supporting base 41, the periphery of the counter bore 411 is fastened, the influence of film stress and bending stress on the surface of the counter bore 411 is effectively reduced, and the counter bore 411 can bear larger impact loads such as sea wave impact and external impact.
The foundation support 4 further comprises an anti-shaking partition plate 43 for separating the lower side of the support platform 42 in the horizontal direction, the anti-shaking partition plate 43 is fixedly connected with the support base 41 and the outer wall surface of the counter bore 411, and the anti-shaking partition plate 43 divides the water in the internal pool into two parts with smaller volumes, so that the shaking of the pool water in the ocean working condition can be reduced, and the impact load of the pool water on the support column 43 and the internal components is reduced. The anti-sloshing partition plate 43 is provided with a flow hole 431 communicated with two sides, so that the pool water can be forced to flow through the square holes, the sloshing of the pool water is well restrained, and the larger internal impact load generated by the sloshing of the pool water is prevented.
As shown in fig. 2, 5, and 6, the first support unit 1 includes a first support key 11 for being mounted on a side surface of a main apparatus such as a pressure vessel 62, a steam generator 63, a main pump 64, etc., and extending in a horizontal direction, and a first support assembly 12 for supporting the first support key 11. The first supporting key 11 on the pressure vessel 62 is arranged along the radial direction of the pressure vessel 62, and self-expansion in the radial direction is released; the first support key 11 of the steam generator 63 is extended along the axial direction of the first pipe 631, and moves the steam generator 63 along the axial direction of the first pipe 631 when expanded by heat; the first support key 11 on the main pump 64 is provided so as to extend in the axial direction of the second pipe 641, and allows the main pump 64 to move in the axial direction of the second pipe 641 when expanded by heat.
The first support assembly 12 is supported by the support platform 42, the first support assembly 12 is formed with a sliding hole 13 corresponding to the outer shape of the first support key 11, and the height position of the sliding hole 13 corresponds to the position of the first support key 11. The first supporting key 11 is inserted into the sliding hole 13, a gap is reserved between the first supporting key 11 and the sliding hole 13, and when the first supporting key 11 moves along with the expansion of the main equipment, the first supporting key 11 expands and is tightly matched with the sliding hole 13.
The tight fit means that the displacement of the first supporting key 11 and the sliding hole 13 perpendicular to the sliding direction is limited, and the external shape of the section of the first supporting key 11 inserted into the sliding hole 13 after expansion is equal to the external shape of the sliding hole 13, so that the expanded first supporting key 11 is not completely restrained and fixed in the axial direction of the sliding hole 13, and the condition that the first supporting key 11 can displace along the sliding hole 13 when expansion and extension are continued can be satisfied.
When the first supporting unit 1 is installed, the axial direction of the sliding hole 13 is the same as the extending direction of the first supporting key 11 at the corresponding position, so that the thermal displacement of the main equipment can be released, the displacement and rotation in other directions can be limited, and the displacement guiding and orientation functions of the equipment are realized.
The first support unit 1 is to release not only the self-expansion but also the stack heat displacement. The first supporting unit 1 is a main bearing structure, and can bear the vertical downward dead weight of equipment and also can bear axial load and torque of accident conditions such as tipping; in addition, the first support unit 1 is compact, and effective load transmission can be achieved in a small space.
The first support assembly 12 includes a first base 121 and an upper cover 122 detachably mounted on an upper side of the first base 121, and the first base 121 and the upper cover 122 are combined to form the sliding hole 13. The first supporting key 11 and the sliding hole 13 have non-circular cross sections, so that the rotation of the first supporting key 11 and the corresponding connected main equipment can be limited, and the first supporting key 11 is fixed in the sliding hole 13 after the first base 121 and the upper cover 122 are locked.
Preferably, the cross-sectional shapes of the first supporting key 11 and the sliding hole 13 are square, and in other embodiments, the cross-sectional shapes of the first supporting key 11 and the sliding hole 13 may be other polygonal or non-circular structures capable of preventing the first supporting key 11 from rotating in the sliding hole 13. When two or more first supporting units 1 are used for each main apparatus, the sectional profile of the first supporting key 11 and the sliding hole 13 may be circular.
In a cold state, a thermal expansion gap is reserved between the first supporting key 11 and the sliding hole 13, so that thermal displacement of equipment generated during cold and hot state changes of a reactor primary loop system can be released, and the phenomenon that the thermal displacement is limited to cause extremely large thermal stress is avoided. However, after the system temperature rises to the stable temperature, the thermal expansion amount of the first support key 11 fills the gap, and the first support assembly 12 restricts the lateral degree of freedom of the first support key 11, allowing only the first support key 11 to slide along the axial direction of the slide hole 13.
As the temperature of the primary circuit increases, the thermal expansion of the primary support key 11 itself adds to the thermal displacement limited by the nominal friction force generated by the primary support unit 1, and the thermal stress continues to increase. When the thermal stress increases to be greater than the static friction force set by the first supporting unit 1, the first supporting unit 1 starts to slip, continuously releasing the thermal stress, and simultaneously the center of the apparatus starts to move toward the thermal state position. The entire thermal displacement release process continues until a circuit reaches the normal operating temperature, the thermal stress to which the apparatus is subjected is equal to the sliding friction force set by the first support unit 1.
After the temperature rise of the first loop is finished and the first loop enters a stable running state, the thermal expansion and thermal displacement processes of all the main equipment are finished, the center of the main equipment is in a stable state, and the first supporting unit 1 stops sliding to generate static friction force in the horizontal direction. The process of releasing the thermal stress of the first supporting unit 1 ends.
When the primary circuit enters a thermal steady operation, the first support unit 1 begins to carry normal periodic alternating loads superimposed by the marine environment. The cyclic alternating loads of roll, pitch, roll, pitch and heave due to the marine environment act for a long period of time, causing each host device to experience significant side inertial loads.
Due to the limitation of the sliding hole 13, the first support assembly 12 allows only a single degree of freedom translation of the first support key 11 along the sliding friction pair, while limiting the remaining 5 degrees of freedom movements. The periodic alternating load caused by the marine environment is resisted in the direction of the degree of freedom in which the lateral static friction force generated by the sliding friction pair is continuous, so that weak links such as the direct action of the alternating load on the connecting part of the pipelines of all main equipment are avoided, and fatigue risks are generated in continuous long-term operation.
By using the first support unit 1, various loads including periodic alternating loads can be effectively balanced, and meanwhile, a certain lateral degree of freedom can release thermal expansion and thermal displacement, so that thermal stress is reduced, and pipeline stress is optimized.
In some embodiments, the first base 121 includes a base 1211 and two stoppers 1212 standing on the base 1211, the two stoppers 1212 are spaced apart, and the upper cover 122 is connected between the upper ends of the two stoppers 1212, and forms a sliding hole 13 with the base 1211 and the stoppers 1212. In other embodiments, the shapes of the first base 121 and the upper cover 122 are not limited, and the sliding hole 13 may be formed after assembly.
Preferably, the horizontal opposite sides of the sliding hole 13 are provided with an adjusting unit 14 for adjusting the width dimension of the sliding hole 13 in the horizontal direction. In other embodiments, the adjustment unit 14 may be provided only on one of the two horizontal opposite sides of the slide hole 13. In other embodiments, the adjusting unit 14 may be omitted, so that the width dimension of the sliding hole 13 in the horizontal direction is not adjustable.
The adjusting unit 14 includes a first adjusting plate for adjusting the width of the sliding hole 13 in the horizontal direction, preferably, the thickness of the first adjusting plate is adjustable, and the moving distance of the first supporting key 11 in the cold and hot state is mapped on site to practically match the thickness of the first adjusting plate, so as to provide a displacement space and single-side limit of the first supporting key 11 in the cold and hot states, thereby adjusting the friction force with the first supporting key 11. The variable control provides stable and controllable friction force in the horizontal direction, can bear lateral force caused by severe working conditions such as long-time periodical swing, inclination and the like, optimizes the stress of a primary loop pipeline, and reduces fatigue risk.
Further, the side of the first support key 11 opposite to the first regulation plate is provided with a side slide plate 111 slidably fitted with the first regulation plate. The side slide 111 and the first adjustment plate constitute a friction pair, and the side slide 111 moves together with the first support key 11 to protect the first support key 11 from abrasion.
In some embodiments, a side of the sliding hole 13 opposite to the lower side of the first support key 11 is provided with a sliding unit 15 for moving the first support key 11 in the axial direction of the sliding hole 13. The thickness of the sliding unit 15 is processed by on-site real-time matching, and the elevation and levelness of the equipment are adjusted slightly. In other embodiments, the sliding unit 15 may be omitted.
In general, the sliding unit 15 includes a first sliding plate; the lower side of the first support key 11 is provided with a horizontal slide plate 112 in sliding engagement with the first slide plate. The horizontal sliding plate 112 is fixed under the first supporting key 11, forms a friction pair with the first sliding plate, provides stable and controllable friction force, and simultaneously generates relative sliding with the first sliding plate to release thermal displacement. Preferably, a horizontal slide plate 112 is also provided on the upper side of the first support key 11, and forms a friction pair with the upper cover 122.
Preferably, the first support assembly 12 further includes a support adjustment plate 123 for mounting the first base 121, and the support adjustment plate 123 is located between the first base 121 and the support platform 42, and the in-situ real-time thickness enables the leveling and fine-tuning of the elevation of the main equipment.
As shown in fig. 2, 7, 8, the second supporting unit 2 includes a second supporting assembly 21 and a sliding seat assembly 22, and the second supporting assembly 21 is mounted on a corresponding side of the steam generator 63 and protrudes in a horizontal lateral direction. The sliding seat assembly 22 is provided with a horizontally arranged supporting surface, and the second supporting assembly 21 is slidably matched with the sliding seat assembly 22 along the supporting surface in the horizontal direction so as to release the thermal displacement of the steam generator 63 on the horizontal plane and limit the displacement range on the horizontal plane.
During stack cold and hot state changes, the second support assembly 21 is restricted from moving relative to the sliding seat assembly 22 along the first conduit 631 by means of a friction pair with the sliding seat assembly 22. In some embodiments, the second support assembly 21 and the sliding seat assembly 22 may be unoriented to allow unoriented relative movement therebetween, enabling multi-directional thermal displacement of the steam generator 63 and the pressure vessel 62 that is not axial to the first conduit 631.
Preferably, since a multi-directional thermal displacement can be achieved, several second support units 2 may be distributed around the circumference of each steam generator 63. The main functions of the second supporting units 2 are to bear the vertical and partial side loads of the steam generator 63, and a plurality of the second supporting units 2 together form a complete support to limit the rotational freedom degree and the vertical translation freedom degree of the steam generator 63, so that the functions of effectively limiting the freedom degree of the steam generator 63 and releasing the multi-directional heat displacement of the system caused by the change of the cold and hot states are achieved.
In some embodiments, one end of the second support assembly 21 is connected to the steam generator 63, and the other end of the second support assembly 21 protrudes horizontally. The sliding seat assembly 22 is mounted to the support platform 42 and supports the second support assembly 21 such that the second support assembly 21 is in sliding engagement with the upper side of the support surface.
Further, the second support assembly 21 includes a horizontally extending second support key 211, one end of the second support key 211 is connected to the steam generator 63, and the other end is horizontally extended outward.
The second support assembly 21 further includes an adjustment slide 212 fixedly coupled to the second support key 211, the adjustment slide 212 being in sliding engagement with the support surface. The adjustment slide 212 is located between the second bearing key 211 and the bearing surface, allowing only the adjustment slide 212 to be in sliding engagement with the bearing surface. The adjusting slide plate 212 is provided with a clamping groove, and the second supporting key 211 is clamped into the clamping groove to realize fixed connection.
Preferably, the sliding seat assembly 22 includes a second sliding plate 221, and a bearing surface is formed on the second sliding plate 221. The bearing surface is in sliding engagement with the second bearing assembly 21, producing relative sliding movement as the steam generator 63 releases thermal displacement. The second support assembly 21 forms a friction pair with the sliding seat assembly 22, and stable friction force can be obtained and controlled by variables.
Further, the second sliding plate 221 is made of a material having the characteristics of wear resistance and stable friction coefficient, and forms a friction pair with the adjustment sliding plate 212, so that a stable and controllable friction force can be provided by changing materials with different friction coefficients and adding lubricating oil to the friction surface, and simultaneously, relative sliding is generated with the adjustment sliding plate 212, and thermal displacement is released.
The sliding seat assembly 22 further generally includes a second base 222, and the second sliding plate 221 is mounted on the second base 222, so that the second sliding plate 221 with different materials can be replaced, and the friction between the second sliding plate 221 and the adjusting sliding plate 212 can be controlled.
Further, the sliding seat assembly 22 further includes a second adjusting plate 223 for mounting the second base 222, the second adjusting plate 223 is disposed on the lower side of the second base 222 and located between the second base 222 and the supporting platform 42, and the on-site implementation thickness realizes the level adjustment and the elevation fine adjustment of the main device.
The second support unit 2 further includes an axial limiting mechanism 24 connected between the second support assembly 21 and the sliding seat assembly 22 to limit the displacement of the second support assembly 21 and the sliding seat assembly 22 in the extending direction of the second support assembly 21, while also limiting the movement in the height direction.
The axial limiting mechanism 24 includes a connecting rod 241 disposed along the extending direction of the second supporting component 21, two ends of the connecting rod 241 are respectively provided with a first lock hole 242 and a second lock hole 243, and locking elements connected with the second supporting component 21 and the sliding seat component 22 are respectively arranged in the first lock hole 242 and the second lock hole 243 in a penetrating manner.
The second locking hole 243 is a kidney-shaped hole extending along the extending direction of the second supporting component 21, so that the second supporting component 21 and the sliding seat component 22 can slide relatively, and the sliding displacement is limited. In other embodiments, the first locking hole 242 may be a kidney-shaped hole extending in the extending direction of the second support member 21, or the first locking hole 242 and the second locking hole 243 may be kidney-shaped holes, so that the sliding stroke may be limited.
Further, in order to limit the sliding range of the second support assembly 21 in the lateral direction relative to the sliding seat assembly 22, a lateral limiting mechanism 23 for limiting the lateral position of the second support assembly 21 in the horizontal plane is provided on the second base 222. The position limited by the lateral limiting mechanism 23 is adjusted according to the position of the cold-hot state second supporting key 211, so that the limiting of the lateral movement limit position of the second supporting assembly 21 is realized.
In some embodiments, the lateral stop mechanism 23 includes two sets of stop units 231 on horizontally opposite sides of the second support assembly 21, each stop unit 231 including a stop table 2311 and a stop 2312 disposed on the stop table 2311. In other embodiments, the limiting unit 231 may be disposed on one side only, and the blocking wall is disposed on the other side.
One end of the limiting member 2312 is opposite to the side of the second supporting assembly 21, and the axial position of the limiting member 2312 on the positioning table 2311 is adjustable to adjust the interval between the limiting members 2312, and the interval between the limiting members 2312 defines the lateral sliding range of the second supporting assembly 21. The limiting member 2312 may be a screw threaded with the positioning table 2311, so as to facilitate adjustment of the axial position.
The lateral limiting mechanism 23 can limit the displacement of the main equipment under the accident working condition, and can effectively realize the multidirectional thermal displacement of the main equipment such as the steam generator 63, the main pump 64 and the like, which is not in the axial direction of the connecting short pipe, and realize the release of the multidirectional thermal displacement with limitation.
The friction pair between the second supporting component 21 and the sliding seat component 22 is controlled by a variable, a limit friction pair is established between the adjusting sliding plate 212 and the second sliding plate 221, the magnitude of friction force is controlled to a range by the variable, the stress generated by the friction pair is larger than the friction force when thermal expansion and thermal displacement occur, the friction force can push the friction pair to slide, and when the temperature is stable, the friction force can offset or share the horizontal component force when each steam generator 63 and the first pipeline 631 are kept stable, so that the stress condition of the pipeline is optimized, and the fatigue phenomenon of the pipeline is avoided.
Meanwhile, the second supporting unit 2 has a multidirectional friction pair structure, thereby meeting the multidirectional thermal expansion and thermal displacement requirements of different fulcrums of the steam generator 63, providing controllable and stable friction force to adapt to long-time periodic alternating load in the marine environment, optimizing the stress distribution of the steam generator 63, and avoiding fatigue failure.
During operation of the reactor, as the temperature of the primary circuit increases, the thermal expansion of the steam generator 63 itself adds thermal displacement limited by the nominal friction generated by the friction pair between the second support assembly 21 and the sliding seat assembly 22, and the thermal stress continues to increase. When the thermal stress increases to be greater than the static friction force set by the friction pair, the friction pair starts to slip, continuously releasing the thermal stress, and simultaneously the steam generator 63 starts to move to the thermal state position.
The entire thermal displacement release process continues until a circuit reaches normal operating temperature, and the thermal stress experienced by the steam generator 63 is equal to the sliding friction set by the friction pair. When the temperature rise of the primary circuit is finished and the primary equipment enters a stable running state, the thermal expansion and thermal displacement processes of the primary equipment are finished, the center is in a stable state, at the moment, the friction pair stops sliding to generate static friction force in the horizontal direction, and the thermal stress releasing process of the friction pair between the second supporting component 21 and the sliding seat body component 22 is finished.
When the primary circuit enters thermal steady operation, the friction pair between the second bearing assembly 21 and the sliding seat assembly 22 begins to carry normal periodic alternating loads superimposed by the marine environment. The cyclic alternating loads of roll, pitch, roll, pitch and heave due to the marine environment act for a long period of time, causing each host device to experience significant side inertial loads. However, the friction pair between the second supporting component 21 and the sliding seat component 22 has limited freedom in the horizontal direction, and the cold state and the hot state can be limited only on one side. At the moment, the lateral static friction force generated by the friction pair continuously resists periodic alternating load caused by marine environment, and fatigue risks caused by weak links such as pipeline joints of the steam generator 63 are avoided.
In other embodiments, the sliding seat assembly 22 may be fixedly connected to the steam generator 63, so that the second support assembly 21 is mounted on the base support 4, and one end of the second support assembly 21 horizontally protrudes toward the outer wall surface of the steam generator 63. The sliding seat assembly 22 is disposed with its support surface facing downward, and the second support assembly 21 is supported on the underside of the support surface.
As shown in fig. 3 and 9, the third support units 3 are arranged in a central symmetry manner, the arrangement manner is simple and effective, and the stable state of the main equipment containers such as the steam generator 63, the main pump 64 and the like can be ensured through stress decomposition.
Preferably, each third supporting unit 3 extends horizontally, and applies force in the horizontal direction to provide horizontal support, so that the stress of the main equipment containers such as the steam generator 63 and the main pump 64 is balanced, and the risk of tipping does not occur.
In the case where the third support means 3 supports the main vessel such as the steam generator 63 and the main pump 64 in the horizontal direction, the third support means 3 allows the main equipment vessels such as the steam generator 63 and the main pump 64 to undergo low-speed displacement such as thermal expansion and thermal displacement, and releases thermal stress to a certain extent.
Further, each third supporting unit 3 is located at the upper end of the corresponding connected steam generator 63 and main pump 64, and can keep the main equipment containers such as the steam generator 63 and the main pump 64 in a stable state under the working conditions of periodic alternating load, earthquake or horizontal impact load such as accident of the marine environment, limit the horizontal displacement of the upper part of the main equipment containers, and reduce the bending moment and stress of the lower part support so as to reduce the risk of overturning the containers; and the stress of the pipeline is optimized, and the fatigue risk is avoided.
In some embodiments, the third support unit 3 includes first lugs 31 and third support assemblies 32, and each first lug 31 is disposed on an outer wall surface of the corresponding connected steam generator 63, main pump 64, respectively. The first lugs 31 are welded to the steam generator 63 and to the upper part of the main pump 64 to provide a mounting location for the upper horizontal support. One end of the third support assembly 32 is rotatably connected to the first lug 31, and the other end extends away from the pressure vessel 62 and is fixedly mounted.
The extending direction of the third supporting component 32 connected with the steam generator 63 and the axis included angle of the first pipeline 631 connected with the corresponding steam generator 63 are acute angles, so that the supporting direction of each third supporting unit 3 is outward at the periphery of the pressure vessel 62 and is uniformly distributed, and the stress balance of all directions is ensured.
Further, the extending direction of the third supporting component 32 connected with the main pump 64 forms an acute angle with the axis of the second pipe 641 connected with the corresponding main pump 64, so that the supporting direction of each third supporting unit 3 is outward in the circumferential direction of the pressure vessel 62 and is uniformly distributed, and the stress balance in all directions is ensured.
In some embodiments, two third support units 3 are provided on the outer wall surface of each steam generator 63; the included angle between the two third supporting assemblies 32 on the outer wall surface of each steam generator 63 is smaller than 180 degrees, so that the pulling force direction of the third supporting unit 3 is along the axial direction of the first pipeline 631 connected with the corresponding steam generator 63 and is far away from the pressure vessel 62, and the supporting of the steam generator 63 is ensured. In other embodiments, more than two third support units 3 may be provided in connection with one of the steam generators 63, provided that the balance of the support forces of the corresponding steam generators 63 can be ensured.
The first lugs 31 of each third supporting unit 3 on the outer wall surface of the steam generator 63 extend outwards along the radial direction of the corresponding steam generator 63 and are perpendicular to the axis of the first pipeline 631 connected with the corresponding steam generator 63, so that the supporting acting force of the third supporting units 3 on the two sides to the steam generator 63 is more balanced and controllable. In other embodiments, the direction in which the first lugs 31 extend out of the steam generator 63 may also be at an angle to the corresponding first tubes 631.
In some embodiments, two third support units 3 are provided on the outer wall surface of each main pump 64; the included angle between the two third supporting units 3 on the outer wall surface of each main pump 64 is smaller than 180 degrees, so that the pulling force direction of the third supporting units 3 is along the axial direction of the second pipeline 641 connected with the corresponding main pump 64 and is far away from the pressure container 62, and the supporting of the main pump 64 is ensured. In other embodiments, if the balance of the supporting forces of the corresponding main pumps 64 can be ensured, two or more third supporting units 3 may be provided to be connected to one of the main pumps 64.
The first lugs 31 of each third supporting unit 3 on the outer wall surface of the main pump 64 extend outwards along the radial direction of the corresponding main pump 64 and are perpendicular to the axis of the second pipe 641 connected with the corresponding main pump 64, so that the supporting acting force of the third supporting units 3 on the two sides to the main pump 64 is more balanced and controllable. In other embodiments, the direction in which the first lugs 31 extend out of the steam generator 63 may also be at an angle to the corresponding second channels 641.
Further, the third support assembly 32 includes a first damper 321 and a first support 322, the first damper 321 is connected between the first support 322 and the first support lug 31, the first support 322 is fixedly installed, the first support 322 is fixed at the bulkhead of the reaction chamber by bolts, and is disposed at an angle to the extending direction of the first support lug 31. Preferably, there is also a rotational connection between the first damper 321 and the first support 322.
In this arrangement, the third support unit 3 connected to the steam generator 63 horizontally supports the supporting force mostly along the axial direction of the first pipe 631, and the other part of the supporting force is along the radial direction of the steam generator 63, so that the steam generator 63 can be kept in a stable state, the horizontal displacement of the upper part of the steam generator is limited, the bending moment and the stress of the lower support are reduced, the risk of the steam generator 63 tipping over is reduced, the thermal expansion of the steam generator 63 is limited, and the stress of the first pipe 631 is optimized.
The third supporting unit 3 connected with the main pump 64 horizontally supports the supporting force mostly along the axial direction of the second pipe 641, and the other part of the supporting force is along the radial direction of the main pump 64, so that the main pump 64 can be kept in a stable state, the horizontal displacement of the upper part of the main pump is limited, the bending moment and the stress born by the lower supporting part are reduced, the risk of the main pump 64 tipping over is reduced, the thermal expansion of the main pump 64 is released in a limited way, and the stress of the second pipe 641 is optimized.
The first supporting unit 1 with horizontal support and the main equipment containers such as the steam generator 63 and the main pump 64 are supported without gaps, the cylinder walls of the main equipment containers such as the steam generator 63 and the main pump 64 are directly contacted with the horizontal supporting structure under earthquake working conditions or impact and swing loads, external loads can be absorbed or transmitted to the construction materials through the damper, and compared with non-contact type supporting, adverse effects of gaps on the anti-vibration performance of the containers can be avoided.
The filler neck at the lower end of the pressure stabilizer 65 is connected to the filler neck of the steam generator 63 through a flexible long tube 651, in this embodiment, the flexible long tube 651 may be a corrugated tube, and the flexible long tube 651 is an elongated curved pressure-bearing tube, which is usually welded by several sections and has low rigidity.
As shown in fig. 2, 3, and 10 to 12, the integrated support device further includes a tube support unit 5 that fixedly supports the flexible long tube 651, and the tube support unit 5 includes a tube clamp 51 and a support mechanism 52. The pipe clamp 51 is mounted on the flexible long pipe 651, so that the supporting device is connected with the flexible long pipe 651 to support the flexible long pipe 651, and stability of the flexible long pipe 651 is guaranteed. The distribution of the pipe clamps 51 may correspond to the supporting mechanisms 52, and the number may be not limited, depending on the arrangement of the supporting mechanisms 52.
The support mechanism 52 has one end connected to the tube clamp 51 and the other end fixedly disposed, and after the connection is completed, defines the initial position of the flexible long tube 651. The support mechanism 52 is an elastically deformable structure to release the impact load to which the flexible long tube 651 is subjected when the flexible long tube 651 is subjected to an external load.
The pipe body supporting unit 5 is used for bearing various loads borne by the flexible long pipe 651 of the marine environment reactor, supporting the flexible long pipe 651, meeting the thermal expansion and thermal displacement requirements of the flexible long pipe 651, simultaneously meeting the long-time periodic alternating load and external impact load under the marine environment, optimizing the stress state of the flexible long pipe 651, avoiding fatigue failure and improving the equipment reliability.
The flexible long tube 651 includes a plurality of tube segments 6511 in a bent arrangement, and the support mechanism 52 may be provided on a portion of the tube segments 6511, such as on one of the tube segments 6511 or on several of the tube segments 6511, or on all of the tube segments 6511.
In general, the supporting mechanism 52 is disposed at the middle position of the corresponding pipe section 6511, so as to avoid the welding seam of the flexible long pipe 651, and reserve a larger space at the filler neck, so that the flexible long pipe 651 is convenient to install and maintain in subsequent operation.
The elastic deformation direction of the supporting mechanism 52 is perpendicular to the axis of the corresponding pipe section 6511, so that the axial stress balance of the corresponding pipe section 6511 can be ensured. In other embodiments, if two or more support mechanisms 52 are provided on the same tube segment 6511, the direction of elastic deformation of each support mechanism 52 on the tube segment 6511 may be angled to cooperate to position the tube segment 6511.
In some embodiments, the support mechanism 52 includes a fourth support assembly 521 that elastically supports in the vertical direction, and when the flexible long tube 651 is subjected to an impact load, the fourth support assembly 521 may elastically cushion in the vertical direction to allow the magnitude of deformation of the flexible long tube 651 to be within a controllable range.
Further, the fourth supporting component 521 includes an elastic member 5211 that can elastically stretch and retract and a cylindrical body 5212 that is sleeved outside the elastic member 5211, wherein the upper end of the elastic member 5211 is connected to the pipe clamp 51, and the lower end is fixedly installed.
The elastic member 5211 is usually a spring, or may be a structure such as a normal elastic sheet. The elastic member 5211 with a proper elastic coefficient can be selected for installation to match the allowable deformation amount when being loaded, and the pre-compression amount of the elastic member 5211 can be adjusted for initial load balance during installation.
The elastic member 5211 can cushion the flexible long tube 651 when it is loaded, reducing impact. The lower end of the elastic member 5211 is fixed to the base support 4, and the base support 4 may be mounted on site as needed, or may be a general-purpose member.
The fourth support assembly 521 further includes a positioning mechanism 5213 that defines the amount of deformation of the elastic member 5211 that is deformed downward, and the positioning mechanism 5213 can utilize the amount of deformation of the elastic member 5211 to define the amplitude of the downward swing of the flexible long tube 651.
In this embodiment, the positioning mechanism 5213 includes a positioning member 5214 disposed vertically, and one end of the positioning member 5214 is disposed fixedly. The other end of the positioning member 5214 is located between the upper end and the lower end of the elastic member 5211, and a deformation section for compression deformation of the elastic member 5211 is formed between the ends corresponding to the elastic member 5211.
The positioning piece 5214 can be fixed at the upper end, suspended at the lower end, fixed at the lower end and extended upwards.
Further, in the present embodiment, the upper end of the positioning member 5214 is connected to the upper end of the elastic member 5211 in a positioning manner, and the lower end of the positioning member 5214 is suspended, and when the elastic member 5211 is compressed, the positioning member 5214 moves downward along with the elastic member 5211.
The positioning mechanism 5213 further includes a retaining portion 5215 provided at the lower end of the elastic member 5211, and the retaining portion 5215 may be plate-shaped, may be a positioning boss or the like, and is typically provided on the base support 4, or may be provided at the lower end of the cylindrical body 5212.
The resisting part 5215 is spaced from the lower end of the positioning member 5214, and when the elastic member 5211 is compressed to drive the positioning member 5214 to move downward, the resisting part 5215 limits the downward moving position of the lower end of the positioning member 5214 and plays a role in limiting the deformation amount of the elastic member 5211 when being compressed downward.
If the lower end of the positioning member 5214 is fixed, the upper end of the positioning member 5214 can serve to limit the position of the upper end of the elastic member 5211 after being deformed downward, and can also serve to limit the deformation amount of the elastic member 5211 when being compressed downward. In other embodiments, the cylindrical body 5212 may be limited, at least one end of the elastic member 5211 extends out of the cylindrical body 5212, and after being compressed, the extending end is compressed into the cylindrical body 5212, and the upper and lower ends of the cylindrical body 5212 are used to limit the compression deformation amount of the elastic member 5211.
In some embodiments, the elastic member 5211 is disposed in the cylinder 5212, the upper end of the cylinder 5212 is provided with a baffle 5216 for preventing the elastic member 5211 from being pulled out upwards, and the baffle 5216 is provided with a through hole 5217. A connecting member 5218 is connected between the upper end of the elastic member 5211 and the pipe clamp 51, and the connecting member 5218 is vertically movably inserted through the through hole 5217. When the flexible long tube 651 is impacted, the impact is transmitted to the elastic member 5211 through the connecting member 5218, and the elastic member 5211 is compressively deformed. The baffle 5216 can be omitted, and the elastic member 5211 can be directly inserted into the cylindrical body 5212.
In the present embodiment, the support mechanism 52 includes a fifth support assembly 522 that is disposed obliquely to elastically support in an oblique direction. The fourth support member 521 and the fifth support member 522 may be provided separately for supporting the flexible long tube 651, or may be provided simultaneously for supporting the flexible long tube 651.
In addition, the fourth support assembly 521 and the fifth support assembly 522 may be separately provided on the one pipe section 6511 or may be simultaneously provided on the one pipe section 6511.
Further, the fifth bearing assembly 522 includes a set of second dampers 5221, and one end of the second dampers 5221 is connected to the pipe clamps 51, and the other end thereof can be fixedly mounted on the base support 4. The base support 4 of the fourth support member 521 and the base support 4 of the fifth support member 522 may be integrally formed or may be separately formed as a separate structure.
The second damper 5221 latches when the speed or acceleration exceeds a corresponding value, forming a rigid support. A set of second dampers 5221 may be combined with the fourth supporting assembly 521, the fourth supporting assembly 521 may be supported in a vertical direction, and the second dampers 5221 of the fifth supporting assembly 522 may be supported in an inclined direction.
The fifth bearing unit 522 may include two or more sets of second dampers 5221, and each set of second dampers 5221 may be supported in combination with the fourth bearing unit 521 so as to have a different inclination direction and form a multi-angle support.
Under the action of external impact or under the working condition of a break accident, the positioning mechanism 5213 is used for limiting the downward deformation of the elastic piece 5211 and locking the second damper 5221, so that a rigid support can be formed to limit the flexible long tube 651 in all directions, and damage or swing caused by overlarge displacement of the flexible long tube 651 is prevented.
The fifth support assembly 522 may also support a certain pipe segment 6511 alone, where the fifth support assembly 522 on the pipe segment 6511 may include a set of second dampers 5221, or may include two or more sets of second dampers 5221, each set of second dampers 5221 being connected to the flexible long pipe 651, respectively, and the inclination directions of the second dampers 5221 of each set being different, so as to form a multi-angle support, thereby ensuring load transmission of the flexible long pipe 651 in multiple directions.
The supporting mechanisms 52 of the supporting device can be arranged and installed at a certain angle in a narrow space, so that the load transmission of the flexible long tube 651 in the three-dimensional space can be ensured. When low-speed displacement occurs, such as thermal expansion, low-speed swinging working conditions, and the like, the flexible long tube 651 is allowed to expand freely, thermal stress and a certain periodic alternating load are released, so that the stress state of the flexible long tube 651 is optimized, and fatigue failure is avoided.
In addition, the rigidity and the precompression amount of the elastic member 5211 and the second damper 5221 can be adjusted to balance the initial load in the vertical direction and the initial load in the horizontal direction, so as to ensure that the thermal displacement in the vertical direction and the release of the thermal displacement along the axial direction of the flexible long tube 651 are in a controllable range, and avoid damage caused by overlarge thermal displacement of the flexible long tube 651, wherein the initial load in the vertical direction is mainly the weight of the flexible long tube 651 and the weight of the fluid medium.
The fine adjustment of the arrangement height and angle of the supporting mechanism 52 can be realized by on-site real-matching of the height and the inclination angle of the foundation support 4, the adjustability is enhanced, and the stress balance of the flexible long tube 651 is ensured.
The supporting device only adopts two supporting components, namely the second damper 5221 and the elastic piece 5211, has simple supporting structure form and small occupied space, and meets the space requirement of the reactor in compact arrangement.
The angle formed by each second damper 5221 and the flexible long tube 651 can ensure that the load borne by the flexible long tube 651 can be effectively transferred in the three-dimensional plane of the three-dimensional space, so that the stress state of the flexible long tube 651 is optimized. The pipe is allowed to expand freely when low-speed displacement such as thermal expansion and thermal displacement occurs, and thermal stress is released. The rigid support is provided under the action of external impact to limit the flexible long tube 651 in all directions, so that damage caused by overlarge displacement of the flexible long tube 651 under the action of inertia force is avoided. Meanwhile, when a break accident occurs, rigid support is provided to limit the displacement of the flexible long tube 651, so that the flexible long tube 651 is prevented from being thrown.
Further, as shown in fig. 10, the support base 41 includes a second support 413 supported at the lower end of the pressure stabilizer 65, the second support 413 includes a cylindrical support tube 4131 with its axis vertically arranged, the upper end of the support tube 4131 is fixedly connected to the lower end of the pressure stabilizer 65, the upper end of the support tube 4131 is welded to the lower end of the pressure stabilizer 65, the pressure stabilizer 65 is supported, and the flexible long tube 651 is led out from the lower end of the support tube 4131. The upper end of the supporting cylinder 4131 has a shape corresponding to the shape of the lower end of the cylindrical body 651, so that the upper end of the supporting cylinder 4131 is just connected to the outer ring of the lower head of the pressure regulator 65, and can support the pressure regulator 65. In other embodiments, the outer diameter of the supporting cylinder 4131 may be larger than the outer diameter of the pressure stabilizer 65, and a ring member such as a collar may be disposed in the middle of the supporting cylinder 4131, so that the collar is sleeved on the lower end of the pressure stabilizer 65 to support the pressure stabilizer 65. The support cylinder 4131 provides excellent vertical load bearing capability, and also has a certain horizontal load bearing capability, and can realize a stable support function.
Preferably, the material of the support cylinder 4131 is the same as that of the pressure stabilizer 65, and the thermal expansion coefficient is the same, and the thermal expansion of the pressure stabilizer 65 itself is released by the temperature gradient of the support cylinder 4131.
The second support 413 further comprises a cylindrical cylinder seat 4132 disposed at the lower end of the support cylinder 4131, wherein the upper end of the cylinder seat 4132 is connected with the lower end of the support cylinder 4131, so that the support cylinder 4131 and the cylinder seat 4132 can be correspondingly reduced as much as possible, and the difficulty in manufacturing and carrying is reduced.
Further, the upper end of the cylinder seat 4132 and the lower end of the supporting cylinder 4131 are respectively provided with a flange which is connected with each other, and the flange is provided with a lock hole, so that the cylinder seat 4132 and the supporting cylinder 4131 can be locked and fixed after the bolts are penetrated. The outer wall of the support tube 4131 has ribs distributed on its circumference which are connected to the flange at the lower end of the support tube 4131, the outer wall of the tube holder 4132 has ribs distributed on its circumference which are connected to the flange at the upper end of the tube holder 4132, and the ribs can increase the support strength of the support tube 4131 and the tube holder 4132.
The second support 413 further includes an annular spacer 4133 interposed between the upper end of the housing 4132 and the lower end of the support housing 4131, and the thickness of the annular spacer 4133 can be machined in a field-fit manner to achieve parallelism adjustment of the mounting surface of the device and height adjustment of the mounting surface of the device.
Preferably, the second support 413 further comprises a plurality of legs 4134 supporting the cartridge holder 4132, allowing the support cartridge 4131 to be positioned at a suitable height and facilitating the extraction of the flexible long tube 651.
Preferably, as shown in fig. 2, 10 and 13, the integrated integral supporting device further includes two groups of limiting supporting units 7 distributed on the outer ring of the upper end of the voltage stabilizer 65, to limit the horizontal position of the voltage stabilizer 65 under the impact load condition, and each limiting supporting unit 7 is spaced from the outer wall of the upper end of the voltage stabilizer 65.
The height position of the limit supporting unit 7 corresponds to the upper platform of the reactor, the limit supporting unit 7 is installed, the upper platform is connected with the reaction chamber, and stable supporting is provided for the limit supporting unit 7.
In this embodiment, the spacing supporting unit 7 is connected to the upper platform by welding, and is spaced from the outer wall of the voltage stabilizer 65, so as to limit the swinging displacement of the voltage stabilizer 65, and also ensure that the spacing supporting unit 7 is not in contact with the voltage stabilizer 65 under thermal conditions. In other embodiments, the limit support unit 7 may be supported by a dedicated support base or the like.
The limit supporting unit 7 includes a supporting head 71 projecting toward a side wall surface of the stabilizer 65, the supporting head 71 being provided so as to be positionally adjustable in a radial direction of the stabilizer 65, and normally, the supporting head 71 is screwed, and a gap between a head fulcrum of the supporting head 71 and the stabilizer 65 is adjusted by a screw pair. The end of the supporting head 71 opposite to the voltage stabilizer 65 is provided with a buffer layer capable of buffering, and the head is added with the buffer layer, such as metal rubber, so as to ensure the displacement limiting and buffering effects under accident working conditions and swing working conditions.
When the end of the supporting head 71 opposite to the voltage stabilizer 65 is a plane, three or more than three limit supporting units 7 are required to be arranged, and the limit supporting units are uniformly distributed on the circumference of the voltage stabilizer 65, so that the supporting balance is ensured. When the end of the supporting head 71 opposite to the voltage stabilizer 65 is an arc surface corresponding to the side wall of the voltage stabilizer 65, two limiting supporting units 7 may be distributed on two opposite sides of the voltage stabilizer 65, so as to perform the limiting function.
It will be appreciated that the above technical features may be used in any combination without limitation.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (26)
1. An integrated integral support device for a multi-vessel system, characterized by comprising a suppression pool (61), a pressure vessel (62), a steam generator (63), a main pump (64), a pressure stabilizer (65), a connecting pipeline and an integrated integral support device, wherein the suppression pool is arranged in a reaction chamber;
The steam generator (63) is connected with the pressure vessel (62) through a first pipeline (631), the main pump (64) is connected with the pressure vessel (62) through a second pipeline (641), and the pressure stabilizer (65) is connected with the steam generator (63) through a pipeline;
The integrated supporting device comprises an upper support, a middle support and a base support (4), wherein the pressure suppression tank (61), the pressure vessel (62), the steam generator (63), the main pump (64) and the pressure stabilizer (65) are all arranged on the base support (4);
The upper side of the pressure suppression pool (61) defines a concave equipment cavity (611), the upper side of the base support (4) forms the bottom surface of the equipment cavity (611), and the pressure vessel (62), the steam generator (63), the main pump (64) and the pressure stabilizer (65) are all positioned in the equipment cavity (611) and isolated from the lower side of the equipment cavity (611);
The height position of the upper support is higher than that of the middle support;
The middle support comprises a plurality of first support units (1) which respectively support the steam generator (63), a main pump (64) and a pressure container (62) so as to limit the thermal displacement overlapped by the steam generator (63) along the axial direction of the first pipeline (631) and the thermal expansion of the steam generator (63) per se, limit the thermal displacement overlapped by the main pump (64) along the axial direction of the second pipeline (641) and the thermal expansion of the main pump (64) per se and release the self-expanding displacement of the pressure container (62) in the radial direction;
the upper support comprises a plurality of third support units (3), which are respectively arranged on one side of the steam generator (63) and one side of the main pump (64) which are away from the pressure vessel (62) and limit the position of the steam generator (63) and the main pump (64).
2. The integrated monolithic support according to claim 1, wherein said foundation support (4) comprises a support base (41), a support platform (42) arranged on the upper side of said support base (41), and at least two support columns (43) arranged in horizontal direction and intersecting each other, each of said support columns (43) being connected to said support base (41), the ends of said support columns (43) being connected to the inner wall of the reactor compartment.
3. The integrated integral supporting device according to claim 2, wherein the supporting platform (42) is respectively provided with a first sleeve hole (421) and a second sleeve hole (422) which respectively correspond to the sectional outline dimensions of the pressure vessel (62) and the steam generator (63), the first sleeve hole (421) is sleeved on the outer ring of the pressure vessel (62), and the second sleeve hole (422) is sleeved on the outer ring of the steam generator (63); the support base (41) is provided with counter bores (411) corresponding to the first sleeve holes (421) and the second sleeve holes (422), and the periphery of each counter bore (411) is provided with a reinforcing rib (412) connected with the support base (41).
4. The integrated integral support device according to claim 3, wherein the foundation support (4) further comprises an anti-shaking partition plate (44) for horizontally separating the lower side of the support platform (42), the anti-shaking partition plate (44) is fixedly connected with the support base (41) and the outer wall surface of the counter bore (411), and a circulation hole (441) for communicating two sides is formed in the anti-shaking partition plate (44).
5. The integrated integral support device according to claim 1, wherein the steam generator (63) comprises at least two, wherein the steam generator is arranged around the pressure vessel (62) in a central symmetry manner, the main pump (64) comprises at least two, wherein the steam generator (63) and the main pump (64) are arranged around the pressure vessel (62) in a central symmetry manner, the steam generator (63) and the main pump (64) are alternately arranged around the pressure vessel (62) and uniformly distributed at intervals around the pressure vessel (62), the steam generator (63) is respectively connected with the pressure vessel (62) through a first pipeline (631), and the main pump (64) is respectively connected with the pressure vessel (62) through a second pipeline (641);
The first supporting unit (1) is arranged on one side of each steam generator (63) opposite to the pressure vessel (62), supports the steam generators (63), and limits the thermal displacement of the steam generators (63) overlapped by a moving and releasing system along the axial direction of the first pipeline (631) and the thermal expansion of the steam generators (63) per se;
The first supporting unit (1) is arranged on one side of each main pump (64) opposite to the pressure vessel (62), supports the main pumps (64), and limits the thermal displacement of the main pumps (64) superimposed by a moving and releasing system along the axial direction of the second pipeline (641) and the thermal expansion of the main pumps (64) per se;
The circumference of the pressure container (62) is distributed with a plurality of first supporting units (1), and the pressure container (62) is released to self-expand and displace in the radial direction.
6. The integrated integral support device according to claim 5, characterized in that said first support unit (1) comprises a first support key (11) for being mounted on a corresponding side of the pressure vessel (62), the steam generator (63), the main pump (64) and protruding in a horizontal direction, and a first support assembly (12) for supporting said first support key (11);
the first support assembly (12) is provided with a sliding hole (13) corresponding to the appearance of the first support key (11), the first support key (11) is inserted into the sliding hole (13), a gap is reserved between the first support key (11) and the sliding hole (13), and when the first support key (11) moves along with expansion of the pressure container (62), the steam generator (63) and the main pump (64), the first support key (11) expands and is tightly matched with the sliding hole (13).
7. The integrated integral support device according to claim 6, wherein the first support assembly (12) comprises a first base (121) and an upper cover (122) detachably mounted on the upper side of the first base (121), the first base (121) and the upper cover (122) are spliced to form the sliding hole (13), and the cross sections of the first support key (11) and the sliding hole (13) are non-circular;
The first base (121) comprises a base body (1211) and two stop blocks (1212) vertically arranged on the base body (1211), the two stop blocks (1212) are arranged at intervals, the upper cover (122) is connected between the upper ends of the two stop blocks (1212), and the upper cover is enclosed with the base body (1211) and the stop blocks (1212) to form the sliding hole (13).
8. The integrated integral support device according to claim 7, wherein at least one of the two horizontal opposite sides of the sliding hole (13) is provided with an adjusting unit (14) that adjusts the width dimension of the sliding hole (13) in the horizontal direction;
the adjusting unit (14) includes a first adjusting plate for adjusting a width of the sliding hole (13) in a horizontal direction;
A side sliding plate (111) which is in sliding fit with the first adjusting plate is arranged on the side surface of the first supporting key (11) opposite to the first adjusting plate;
the side surface of the sliding hole (13) opposite to the lower side surface of the first supporting key (11) is provided with a sliding unit (15) for the first supporting key (11) to move along the axial direction of the sliding hole (13);
the sliding unit (15) comprises a first sliding plate; the lower side surface of the first supporting key (11) is provided with a horizontal sliding plate (112) in sliding fit with the first sliding plate.
9. The integrated integral support device according to claim 1, wherein the steam generator (63) comprises at least two, wherein the steam generator is arranged around the pressure vessel (62) in a central symmetry manner, the main pump (64) comprises at least two, wherein the steam generator (63) and the main pump (64) are arranged around the pressure vessel (62) in a central symmetry manner, the steam generator (63) and the main pump (64) are alternately arranged around the pressure vessel (62) and uniformly distributed at intervals around the pressure vessel (62), the steam generator (63) is respectively connected with the pressure vessel (62) through a first pipeline (631), and the main pump (64) is respectively connected with the pressure vessel (62) through a second pipeline (641);
At least two third supporting units (3) are arranged on the outer wall surface of each steam generator (63) along the circumferential direction, one end of each third supporting unit (3) is connected with the steam generator (63), the other end of each third supporting unit extends out and is fixed in a direction away from the pressure vessel (62), and each third supporting unit (3) outside each steam generator (63) is horizontally symmetrical relative to the axis of a first pipeline (631) connected with the corresponding steam generator (63);
At least two third supporting units (3) are circumferentially arranged on the outer wall surface of each main pump (64), one end of each third supporting unit (3) is connected with the main pump (64), the other end of each third supporting unit extends out and is fixed in a direction away from the pressure container (62), and the third supporting units (3) outside each main pump (64) are horizontally symmetrical relative to the axis of a second pipeline (641) connected with the corresponding main pump (64).
10. The integrated integral support device according to claim 9, wherein the third support units (3) each extend in a horizontal direction and are located at the upper ends of the corresponding steam generator (63) and main pump (64), respectively.
11. The integrated integral support device according to claim 10, wherein the third support unit (3) comprises a first support lug (31) and a third support assembly (32), each first support lug (31) being respectively arranged on the outer wall surfaces of the steam generator (63) and the main pump (64);
One end of each third supporting component (32) is rotationally connected with the first supporting lug (31), and the other end extends out in a direction away from the pressure container (62) and is fixedly installed;
The extending direction of the third supporting component (32) connected with the steam generator (63) forms an acute angle with the axis of the first pipeline (631) connected with the corresponding steam generator (63);
the extending direction of the third supporting component (32) connected with the main pump (64) forms an acute angle with the axis of the second pipeline (641) connected with the corresponding main pump (64).
12. The integrated monolithic support arrangement according to claim 11, wherein two third support units (3) are provided on the outer wall surface of each of said steam generators (63);
The first lugs (31) of each third supporting unit (3) on the outer wall surface of the steam generator (63) extend outwards along the radial direction of the corresponding steam generator (63) and are perpendicular to the axis of a first pipeline (631) connected with the corresponding steam generator (63);
Two third supporting units (3) are arranged on the outer wall surface of each main pump (64);
The first lugs (31) of each of the third support units (3) on the outer wall surface of the main pump (64) protrude outward in the radial direction of the corresponding main pump (64) and are perpendicular to the axis of the second pipe (641) connected to the corresponding main pump (64).
13. The integrated monolithic support arrangement of claim 12, wherein an included angle of the two third support assemblies (32) outside each of said steam generators (63) is less than 180 degrees;
The included angle between the two third bearing assemblies (32) outside each main pump (64) is less than 180 degrees;
The third supporting assembly (32) comprises a first damper (321) and a first support (322), wherein the first damper (321) is connected between the first support (322) and the first supporting lug (31), and the first support (322) is fixedly installed.
14. -Integrated monolithic support device according to any one of claims 1 to 13, characterized in that it further comprises a second support unit (2) for supporting and defining a displacement range on a horizontal plane;
The horizontal two sides of the first pipeline (631) are respectively provided with a second supporting unit (2) for supporting the steam generator (63), and the self-expansion of the steam generator (63) and the thermal expansion of the system superimposed to the steam generator are released.
15. The integrated monolithic support arrangement according to claim 14, wherein said second support unit (2) comprises a second support assembly (21) and a sliding seat assembly (22);
The second support assembly (21) is mounted on the corresponding side of the steam generator (63) and extends horizontally and laterally;
The sliding seat body assembly (22) is provided with a horizontally arranged bearing surface, and the second bearing assembly (21) can be matched with the sliding seat body assembly (22) in a sliding manner along the bearing surface in the horizontal direction so as to release the thermal displacement of the steam generator (63) on the horizontal plane and limit the displacement range on the horizontal plane.
16. The integrated monolithic support arrangement of claim 15, wherein said second support assembly (21) comprises a horizontally extending second support key (211);
The second supporting assembly (21) further comprises an adjusting sliding plate (212) fixedly connected with the second supporting key (211), and the adjusting sliding plate (212) is in sliding fit with the supporting surface;
The sliding seat assembly (22) comprises a second sliding plate (221), the bearing surface is formed on the second sliding plate (221), the bearing surface is in sliding fit with the second bearing assembly (21), and relative sliding is generated when the steam generator (63) releases thermal displacement;
The sliding seat assembly (22) further comprises a second base (222), and the second sliding plate (221) is mounted on the second base (222);
the sliding seat assembly (22) further comprises a second adjustment plate (223) for mounting the second base (222).
17. The integrated integral support device according to claim 16, characterized in that the second base (222) is provided with a lateral limiting mechanism (23) for limiting the lateral position of the second support assembly (21) on a horizontal plane;
The lateral limiting mechanism (23) comprises two groups of limiting units (231) positioned on two horizontal opposite sides of the second supporting assembly (21), and each limiting unit (231) comprises a positioning table (2311) and a limiting piece (2312) arranged on the positioning table (2311);
one end of the limiting piece (2312) is opposite to the side face of the second supporting component (21), and the axial position of the limiting piece (2312) on the positioning table (2311) is adjustable so as to adjust the interval between the two limiting pieces (2312).
18. The integrated monolithic support arrangement according to claim 16, wherein said second support unit (2) further comprises an axial limiting mechanism (24) connected between said second support assembly (21) and said sliding seat assembly (22) to limit the displacement of said second support assembly (21) and said sliding seat assembly (22) in the direction of extension of said second support assembly (21);
The axial limiting mechanism (24) comprises a connecting rod (241) arranged along the extending direction of the second supporting component (21), a first lock hole (242) and a second lock hole (243) are respectively arranged at two ends of the connecting rod (241), and locking pieces connected with the second supporting component (21) and the sliding seat component (22) are respectively arranged in the first lock hole (242) and the second lock hole (243) in a penetrating manner;
at least one of the first lock hole (242) and the second lock hole (243) is a kidney-shaped hole extending along the extending direction of the second supporting component (21), so that the second supporting component (21) and the sliding seat body component (22) can slide relatively, and the sliding displacement is limited.
19. The integrated integral support device according to any one of claims 1 to 13, wherein the lower end of the pressure stabilizer (65) is connected to the steam generator (63) through a flexible long tube (651), the integrated integral support device further comprises a tube body support unit (5) fixedly supporting the flexible long tube (651), the tube body support unit (5) comprises a tube clamp (51) and a support mechanism (52), the tube clamp (51) is mounted on the flexible long tube (651), one end of the support mechanism (52) is connected to the tube clamp (51), the other end is fixedly arranged, and the support mechanism (52) is of an elastically deformed structure so as to release impact load received by the flexible long tube (651).
20. The integrated integral support device according to claim 19, wherein the support mechanism (52) comprises a fourth support assembly (521) that elastically supports the flexible long tube (651) in a vertical direction;
The fourth supporting component (521) comprises an elastic piece (5211) which can stretch out and draw back elastically and a cylindrical body (5212) which is sleeved outside the elastic piece (5211), the upper end of the elastic piece (5211) is connected with the pipe clamp (51), and the lower end of the elastic piece is fixedly installed.
21. The integrated monolithic support arrangement of claim 20, wherein said fourth support assembly (521) further comprises a positioning mechanism (5213) defining an amount of deformation of said elastic member (5211) to deform downwardly;
The positioning mechanism (5213) comprises a vertically arranged positioning piece (5214), and one end of the positioning piece (5214) is fixedly arranged;
The other end of the positioning piece (5214) is positioned between the upper end and the lower end of the elastic piece (5211), and a deformation section for the elastic piece (5211) to deform in a compression mode is formed between the ends corresponding to the elastic piece (5211).
22. The integrated integral support device according to claim 21, wherein the upper end of the positioning member (5214) is in positioning connection with the upper end of the elastic member (5211), and the lower end is suspended;
The positioning mechanism (5213) further comprises a resisting part (5215) arranged at the lower end of the elastic piece (5211), wherein the resisting part (5215) is spaced from the lower end of the positioning piece (5214), limits the downward moving position of the lower end of the positioning piece (5214), and limits the deformation of the elastic piece (5211) when the elastic piece is compressed downwards;
The elastic piece (5211) is arranged in the cylindrical body (5212), a baffle (5216) for preventing the elastic piece (5211) from being pulled out upwards is arranged at the upper end of the cylindrical body (5212), and a through hole (5217) is formed in the baffle (5216);
a connecting piece (5218) is connected between the upper end of the elastic piece (5211) and the pipe clamp (51), and the connecting piece (5218) can vertically movably penetrate through the through hole (5217).
23. The integrated monolithic support arrangement of claim 19, wherein said support mechanism (52) comprises a fifth support assembly (522) arranged obliquely for resilient support in an oblique direction;
The fifth support assembly (522) comprises at least one group of second dampers (5221), one end of each second damper (5221) is connected with the pipe clamp (51), and the other end of each second damper is fixedly installed.
24. The integrated integral support device according to claim 19, wherein the flexible long tube (651) comprises a plurality of tube segments (6511) arranged in a bent manner, and wherein part or all of the tube segments (6511) are provided with the support mechanism (52);
The supporting mechanism (52) is arranged at the middle position of the corresponding pipe section (6511); the elastic deformation direction of the supporting mechanism (52) is perpendicular to the axis of the pipe section (6511) at the corresponding position.
25. The integrated integral support device according to claim 2, wherein the support base (41) comprises a second support (413) supported at the lower end of the pressure stabilizer (65), the second support (413) comprises a cylindrical support cylinder (4131) with a vertically arranged axis, and the upper end of the support cylinder (4131) is fixedly connected to the lower end of the pressure stabilizer (65) to support the pressure stabilizer (65).
26. The integrated integral support device according to claim 1, further comprising at least two sets of limit support units (7) distributed on an outer ring of an upper end of the voltage stabilizer (65), each limit support unit (7) being spaced from an outer wall of an upper end of the voltage stabilizer (65) to limit a horizontal position of the voltage stabilizer (65) under an impact load;
the limiting support unit (7) comprises a support head (71) which extends towards the side wall surface of the voltage stabilizer (65), the support head (71) is arranged in a position-adjustable mode in the radial direction of the voltage stabilizer (65), and a buffer layer capable of buffering is arranged at the end portion, opposite to the voltage stabilizer (65), of the support head (71).
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| CN201810865942.4A CN109166635B (en) | 2018-08-01 | 2018-08-01 | Integrated integral support device for multi-container system |
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| CN201810865942.4A CN109166635B (en) | 2018-08-01 | 2018-08-01 | Integrated integral support device for multi-container system |
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| CN109166635B true CN109166635B (en) | 2024-05-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109915677A (en) * | 2019-03-06 | 2019-06-21 | 中广核研究院有限公司 | A kind of steam generator and dual channel structure with corrugated pipe connection structure |
| CN110853784B (en) * | 2019-11-19 | 2022-07-29 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant stabiliser bearing structure |
| CN114171224A (en) * | 2021-11-04 | 2022-03-11 | 中广核研究院有限公司 | Method for installing primary equipment of primary loop of reactor |
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