Nuclear reactor support mechanism

Abstract

The present application relates to a kind of nuclear reactor support mechanism, wherein nuclear reactor support mechanism includes several vertical support structures;Any vertical support structure includes lug, and lug type support is supported by lug;Lug includes base and at least one rib plate;One end of base is arranged in lug type support, and displacement can occur in lug type support along the length direction of base and / or the width direction of base;Nuclear reactor support mechanism further includes at least one first lateral support structure, and the first lateral support structure includes at least one first lateral support body, and the length direction of the first lateral support body is same with the radial direction of equipment, and one end of the first lateral support body can be connected on the circumferential side of equipment.The nuclear reactor support mechanism of the present application can be used on the equipment with high length-diameter ratio and vertical arrangement in the reactor, to ensure the release of cold and hot equipment self-expansion and pipe elongation, to ensure the verticality of equipment, and to facilitate the optimization of equipment stress, to improve the reliability of equipment.

Description

Technical Field

[0001] This invention relates to the field of nuclear power technology, and in particular to a nuclear reactor support mechanism. Background Technology

[0002] The semi-pool, semi-loop reactor is a reactor type developed by combining the characteristics of both loop and pool reactors. It uses piping to connect the main vessel, main pumps, and heat exchangers into a closed loop. During reactor start-up and shutdown, the supporting structure needs to release the thermal expansion of the equipment itself and the piping connected to it; otherwise, significant thermal stress will occur, leading to structural stress concentration and even failure. Furthermore, it is essential to ensure the levelness of all equipment during installation to prevent fatigue failure under fluid and mechanical loads during operation.

[0003] Because the installation and stable operation of the main pump require extremely high levelness, and the main pump has a small diameter, the traditional trial assembly and grinding adjustment plate method is not only time-consuming and labor-intensive, but also difficult to achieve the high levelness requirements of the equipment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a nuclear reactor support mechanism.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to construct a nuclear reactor support mechanism, which is applied to a vertically arranged longitudinally elongated device in a nuclear reactor. The nuclear reactor support mechanism includes several vertical support structures for surrounding the outside of the device to transmit the vertical load of the device.

[0006] Any vertical support structure includes a lug for fixing to the side of the equipment, and an ear-type support for supporting the lug; the lug includes a base and at least one rib fixed to the base for fixed connection with the equipment; one end of the base is disposed in the ear-type support and is capable of displacement in the ear-type support along the length direction of the base and / or the width direction of the base;

[0007] The nuclear reactor support mechanism further includes at least one first lateral support structure capable of transmitting the horizontal load of the equipment. The first lateral support structure includes at least one longitudinally elongated first lateral support body whose length direction is the same as the radial direction of the equipment. One end of the first lateral support body is used to connect to one circumferential side of the equipment.

[0008] In some embodiments, the longitudinal direction of the first lateral support body is parallel to or coincides with the extension direction of the pipe end connected to the side of the equipment.

[0009] In some embodiments, the first lateral support structure further includes a first clamp for being fitted onto the equipment; one end of the first lateral support body is connected to the first clamp.

[0010] In some embodiments, the first lateral support structure further includes a first hinge assembly disposed at at least one end of the first lateral support body for allowing the device to extend and deflect along its axial direction.

[0011] In some embodiments, the nuclear reactor support mechanism further includes a second lateral support structure capable of transmitting the horizontal load of the equipment; the second lateral support structure includes a second clamp and a longitudinally elongated second lateral support body; the second clamp is used to be sleeved on a pipe coaxially connected to the end of the equipment, the length direction of the second lateral support body is parallel to the radial direction of the equipment, and one end of the body is connected to one circumferential side of the second clamp;

[0012] The first lateral support structure and the second lateral support body are located on the longitudinal sides of the vertical support structure, respectively.

[0013] In some embodiments, the second lateral support structure further includes a second hinge assembly disposed at at least one end of the second lateral support body for allowing the device to extend and deflect along its axial direction.

[0014] In some embodiments, the longitudinal direction of the second lateral support body is parallel to or coincides with the extension direction of the pipe end connected to the side of the equipment.

[0015] In some embodiments, the ear-type support includes a base and a lower sliding plate; the base has a receiving groove extending through its width, the lower sliding plate is disposed in the receiving groove, and can move in the base along the length direction of the base and / or its width direction; one end of the base is relatively fixedly disposed on the lower sliding plate to allow the ear to release lateral displacement requirements;

[0016] The ear-type support also includes two filler members installed on both sides of the base along the length of the base and two upper pressure plates installed on the top of the base. The two upper pressure plates abut against the two filler members respectively and press the filler members and the base onto the lower sliding plate to limit the longitudinal displacement of the support ear.

[0017] In some embodiments, the ear-type support further includes a height adjustment component for adjusting the height position of the ear;

[0018] The height adjustment assembly includes a longitudinal movable plate disposed at the bottom of the lower slide plate and a transverse movable plate disposed at the bottom of the longitudinal movable plate. The transverse movable plate and the longitudinal movable plate are attached to each other to form a friction pair, and the surfaces of the transverse movable plate and the longitudinal movable plate that are attached to each other are inclined surfaces that are inclined along the length direction of the base.

[0019] The longitudinal movable plate and the base are fixed relative to each other in the length direction of the base. The transverse movable plate can move back and forth in the receiving groove along the length direction of the base to lift or sink the longitudinal movable plate.

[0020] In some embodiments, the nuclear reactor support mechanism is configured for use on a half-pool, half-loop reactor, and is connected to and supports the main heat exchanger or main pump of the half-pool, half-loop reactor.

[0021] The present invention has the following beneficial effects: This nuclear reactor support mechanism is suitable for equipment in a reactor with a high length-to-diameter ratio that requires vertical arrangement. By fixing several vertical support lugs to the periphery of the equipment and using lug supports to support the lugs, the vertical load of the equipment can be borne. At the same time, since the lugs can be displaced along the length and / or width direction of the base in the lug supports, the displacement demand of the equipment can be released when the equipment has a displacement demand, avoiding the stress generated by the displacement demand from affecting the verticality and deformation of the equipment. Secondly, this nuclear reactor support mechanism is also connected to the periphery of the equipment through a first lateral support body to transmit the horizontal load of the equipment and limit the horizontal displacement of the equipment, which is conducive to maintaining the verticality of the equipment and can also optimize the stress on the equipment, thereby improving the reliability of the equipment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the main heat exchanger and main pump of the nuclear reactor support mechanism of the present invention applied to a semi-pool semi-loop reactor;

[0024] Figure 2 This is a schematic diagram of the vertical support structure of the present invention after omitting the first baffle and the second baffle in some embodiments;

[0025] Figure 3 This is a top view of the vertical support structure of the present invention in some embodiments;

[0026] Figure 4 yes Figure 3 The vertical support structure shown is a longitudinal sectional view in the first direction;

[0027] Figure 5 yes Figure 3 The vertical support structure shown is a longitudinal sectional view in the second direction;

[0028] Figure 6 This is a top view of the structure of the first hinge assembly of the present invention in some embodiments.

[0029] Figure label:

[0030] Vertical support structure 100;

[0031] Support ear 1; base 11; first groove 111; rib plate 12; ear-type support 2; movable space 21; base 22; receiving groove 221; first groove segment 2211; second groove segment 2212; lower slide plate 23; upper pressure plate 24; filler 25; first horizontal plate 251; first protrusion 252; first vertical plate 253; height adjustment assembly 26; transverse movable plate 261; first horizontal groove 2611; second boss 2612; adjustment structure 262; bolt 2621; nut 2622; longitudinal movable plate 263; second horizontal groove 2631; fixed base plate 27; first boss 271; fixed side plate 28; positioning pin 29; first baffle 30; second baffle 31; length direction L; width direction W;

[0032] First lateral support structure 400; first clamp 41; first lateral support body 42; first hinge assembly 43; connecting lug 431; connecting lug 432; spherical bearing 433; rotating shaft 434;

[0033] Second lateral support structure 500; second clamp 51; second lateral support body 52; second hinge assembly 53; extension plate 54;

[0034] Main heat exchanger 61; main pump 62; first main pipeline 71; second main pipeline 72; first connecting pipeline 73; second connecting pipeline 74. Detailed Implementation

[0035] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the invention will now be described in detail with reference to the accompanying drawings. In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention.

[0036] In related technologies, a semi-pool loop nuclear reactor includes multiple vertically arranged devices that are spaced apart and connected to each other through multiple pipes to form a closed loop.

[0037] refer to Figure 1Multiple devices may include a main container (not shown), at least one main pump 62, and at least one main heat exchanger 61, wherein the main pump 62 and the main heat exchanger 61 are longitudinally elongated structures with a high length-to-diameter ratio; the type of pipe may be rigid pipe or flexible pipe; according to the connection relationship, multiple pipes may include a first main pipe 71, a second main pipe 72, a first connecting pipe 73, and a second connecting pipe 74, wherein the connection relationship of the pipes is as follows: the two ends of the first main pipe 71 are respectively connected to the side of the main heat exchanger 61 and the side of the main container; the other end of the second main pipe 72 is respectively connected to the side of the main pump 62 and the side of the main container; one end of the first connecting pipe 73 is coaxially connected to the lower end of the main pump 62, and its other end is connected to the side of the main heat exchanger 61 through the second connecting pipe 74.

[0038] The present invention constructs a nuclear reactor support mechanism that can be applied to longitudinally elongated equipment in a nuclear reactor that needs to be kept vertical, such as the main pump 62 and main heat exchanger 61 in the aforementioned half-pool loop nuclear reactor, to ensure reliable operation of the equipment.

[0039] Please see Figure 1 In some embodiments, the nuclear reactor support structure may include several vertical support structures 100 and at least one first lateral support structure 400. The vertical support structures 100 are used to bear and transmit the vertical loads of the equipment, and to release the axial displacement requirements of the pipes and the radial displacement requirements of the equipment, thereby maintaining the equipment verticality; the first lateral support structure 400 is used to bear and transmit the horizontal loads of the equipment, and to prevent the horizontal displacement of the equipment from exceeding limits.

[0040] For example, such as Figure 1 As shown, the nuclear reactor support structure may include four vertical support structures 100 and two first lateral support structures 400. The four vertical support structures 100 are spaced apart on the outer circumference of the equipment and connected to it. These vertical support structures 100 are located at the same horizontal height, for example, at the same height as the equipment's center of gravity. Furthermore, the vertical support structures 100 are fixed to a support base plate or concrete foundation (not shown) located below them, transferring the equipment load to the support base plate or concrete foundation. The two first lateral support structures 400 are respectively clamped to the equipment and arranged at intervals along the axial direction of the equipment; each first lateral support structure 400 has several first ends that can be fixedly connected to the ends of support columns or concrete foundations (not shown) located outside the equipment to limit the horizontal displacement of the equipment.

[0041] Understandably, during nuclear reactor operation, equipment and piping are in a hot state, and thermal expansion will cause thermal displacement. The thermal displacement of piping installed on the side of the equipment may cause the equipment to tilt. In order to maintain the vertical setting of the equipment and avoid the concentration of stress on the equipment, their displacement needs need to be released; otherwise, it will be detrimental to the operational reliability of the equipment.

[0042] In some embodiments, the ends of a portion of the equipment are coaxially connected to a pipe, such as the main pump 62 and the first connecting pipe 73 of a half-pool loop nuclear reactor; in order to limit the lateral displacement of this portion of the equipment, the nuclear reactor support mechanism further includes a second lateral support structure 500, which is used to connect to the pipe longitudinally connected to the equipment to cooperate with the first lateral support structure 400 to prevent the horizontal displacement of the equipment from exceeding the limit.

[0043] For example, in addition to several vertical support structures 100, the nuclear reactor support structure also includes a first lateral support structure 400 and a second lateral support structure 500. These two structures are respectively clamped to the equipment and a pipe coaxially connected to the end of the equipment. The vertical support structure 100 is located between the first lateral support structure 400 and the second lateral support structure 500. The second lateral support structure 500 has several second ends that can be fixedly connected to the ends of support columns or concrete foundations (not shown) located outside the pipe to limit the horizontal displacement of the equipment.

[0044] The following describes in detail the specific construction of some embodiments of the vertical support structure 100, the first lateral support structure 400, and the second lateral support structure 500.

[0045] Please see Figure 2 In some embodiments, any vertical support structure 100 may include a lug 1 and an ear-type support 2. The lug 1 is used for fixed connection to the side of the equipment, such as by welding. The ear-type support 2 supports the lug 1 to transmit the equipment load; the ear-type support 2 has a movable space 21 for the lug 1 to be inserted; and the ear-type support 2 can restrict the lug 1 to move in a preset direction within the movable space 21, the preset direction including a first radial direction in which the equipment extends toward the ear-type support 2, and a second radial direction perpendicular to the first radial direction, thereby releasing the need for lateral displacement of the equipment.

[0046] Please see Figure 1 , Figure 2 In some embodiments, the lug 1 may include a base 11 and at least one rib 12 fixed to the base 11.

[0047] In some embodiments, such as Figure 2As shown, the base 11 can be a planar structure, and its plane can be set horizontally or perpendicular to the axial direction of the equipment. The base 11 may include a first contact surface facing the side of the equipment for connecting with the equipment. Preferably, the first contact surface is an arc surface so that the first contact surface completely fits against the side surface of the equipment.

[0048] like Figure 1 As shown, a single rib 12 can be a flat plate structure, which stands on top of the base 11; the rib 12 includes a second contact surface facing the side of the device for connection with the device. Preferably, the second contact surface is also an arc surface so that the second contact surface completely fits against the side surface of the device. In some embodiments, the number of ribs 12 can be two or more. For example, in this embodiment, the lug 1 includes two ribs 12, which are arranged at intervals on the base 11 and are parallel to each other.

[0049] Please see Figure 2 , Figure 4 In some embodiments, the ear-type support 2 may include a base 22, a lower sliding plate 23, two upper pressure plates 24, and two fillers 25.

[0050] The base 22 serves as a carrier and for transmitting equipment load. The base 22 has a receiving groove 221 for accommodating the lug 1, lower slide plate 23, upper pressure plate 24, filler 25, and height adjustment assembly 26, etc. The receiving groove 221 is formed radially through the base 22. The lower slide plate 23 is fixed relative to the lug 1 inserted into the receiving groove 221, supporting the lug 1 and assisting its movement. The upper pressure plate 24 is installed on the top of the base 22, restricting the lug 1 within the receiving groove 221 and limiting its longitudinal displacement. The filler 25 is installed between the lug 1 and the upper pressure plate 24, filling the gap between them, cooperating with the movement of the lug 1, and limiting its longitudinal displacement.

[0051] The lug support 2 may also include a height adjustment component 26 disposed below the lower slide plate 23, which can adjust the longitudinal height of the lug 1, thereby achieving height leveling of the equipment.

[0052] Understandably, such as Figure 4As shown, the height adjustment component 26, the upper pressure plate 24, and the sidewalls of the receiving groove 221 cooperate to define the aforementioned active space 21. When the equipment requires lateral displacement, the lug 1 and the lower slide plate 23 can cooperate to move within the active space 21 to release the lateral displacement requirement of the equipment. At the same time, the presence of the filler 25 can restrict the lug 1 and the lower slide plate 23 to move only in the horizontal direction, such as along the width direction W of the base 22 (the same direction as the first radial direction), or along the length direction L of the base 22 (the same direction as the second radial direction), thereby preventing the equipment from moving longitudinally and ensuring the smooth operation of the equipment.

[0053] Secondly, the height adjustment component 26 is used as a preferred solution in this invention. It can accurately adjust the height of the lug 1 and the equipment, improve the accuracy of the elevation adjustment, and significantly reduce the difficulty of on-site construction. However, the height adjustment component 26 is not a necessary structure for the lug support 2. In some embodiments where the height adjustment component 26 is not provided, the lower slide plate 23 can be directly set on the bottom of the groove.

[0054] In some embodiments, such as Figure 4 As shown, the ear-type support 2 may further include a fixed base plate 27, which is disposed in the receiving groove 221 and fixed to the bottom of the groove; the height adjustment component 26 is disposed on the top of the fixed base plate 27. Understandably, during the installation and debugging of the ear-type support 2, the thickness and flatness of the fixed base plate 27 can be adjusted according to the required elevation and levelness of the ear 1 to achieve preliminary rough adjustment. Furthermore, while the fixed base plate 27 is a preferred embodiment in this invention, it is not a necessary structure for the ear-type support 2. In some embodiments without the fixed base plate 27, the height adjustment component 26 can be directly disposed on the bottom of the groove.

[0055] In some embodiments, such as Figure 4 As shown, the ear-type support 2 may also include two fixed side plates 28, which are respectively fixedly arranged on the two side walls of the receiving groove 221 along the length direction L of the base 22. They are used to adjust the size of the receiving groove 221, limit the extreme position of the lateral displacement of the support ear 1, and ensure that the fit of the side wall forming the active space 21 meets the requirements in the hot state, optimize the lateral stress distribution, and avoid stress concentration.

[0056] The following details the specific features of each component in the lug-type support 2 in some embodiments.

[0057] In some embodiments, please review Figure 2 The longitudinal section of the base 22 can be trapezoidal, but it is not limited to trapezoids; it can also be square, etc. The base 22 can be connected to the base plate or concrete foundation (not shown) by bolts or other means to transfer the equipment load; the sides of the base 22 can be reinforced with ribs 12.

[0058] For ease of explanation, the length direction L of the base 22 will be used as the horizontal reference direction below.

[0059] like Figure 2 As shown, the receiving groove 221 has a groove bottom and two side walls located on both sides of the lateral direction; the receiving groove 221 is also provided with an opening located at the top of the base 22 for the support lug 1 to be inserted into the receiving groove 221 from the top of the base 22. At the same time, the opening can also play a role in avoiding obstruction, allowing part of the structure of the support lug 1 to extend out of the receiving groove 221.

[0060] Please see Figure 4 The receiving slot 221 may include a first slot segment 2211 and a second slot segment 2212. The first slot segment 2211 is located above the second slot segment 2212. The bottom of the receiving slot 221 is formed in the second slot segment 2212, and the lateral length of the second slot segment 2212 is greater than the lateral length of the first slot segment 2211. Optionally, the first slot segment 2211 and / or the second slot segment 2212 may be cuboid in shape.

[0061] The base plate 27 is fixed to the bottom of the second groove section 2212. The fixing method can be by directly locking it into the second groove section 2212 with bolts, pins or other fasteners, or by bonding, welding or other methods. The lateral length of the base plate 27 can be less than or equal to the lateral length of the second groove section 2212.

[0062] In some embodiments, such as Figure 4 As shown, two fixed side plates 28 are disposed in the receiving groove 221 and fixed to the two side walls of the first groove section 2211 respectively. The fixing method can be to directly lock them into the first groove section 2211 with fasteners such as bolts and pins, or by means of bonding, welding, etc. The fixed side plates 28 can be planar structures, and their size is the same as that of the side walls of the first groove section 2211. The thickness of the fixed side plates 28 can be adjusted according to the actual on-site measurement, for example, based on the lateral limit position of the support lug 1 to determine the thickness of the fixed side plates 28.

[0063] Please continue reading. Figure 4 In some embodiments, the height adjustment assembly 26 may include a lateral movable plate 261, two adjustment structures 262, and a longitudinal movable plate 263.

[0064] Two adjustment structures 262 are installed on both sides of the transverse movable plate 261 to push the transverse movable plate 261, thereby adjusting its transverse position. A longitudinal movable plate 263 is located between two fixed side plates 28, and its transverse length is equal to the distance between the two fixed side plates 28, thus restricting its movement to longitudinal displacement. The longitudinal movable plate 263 contacts the transverse movable plate 261, forming a friction pair. The longitudinal movable plate 263 can move longitudinally within the base 22 by means of the transverse movable plate 261's transverse displacement, thereby adjusting the longitudinal position of the lug 1 and achieving precise elevation adjustment of a single lug 1. In practical applications, by coordinating the height adjustment components 26 between multiple lug supports 2, the equipment height can be precisely leveled.

[0065] Optionally, such as Figure 4 As shown, the transverse movable plate 261 is disposed in the second groove section 2212 and located on top of the fixed base plate 27; the transverse length of the transverse movable plate 261 is less than the transverse length of the second groove section 2212 to leave space so that the transverse movable plate 261 can make transverse displacement on the fixed base plate 27.

[0066] The transverse movable plate 261 can be a flat plate structure, with its top surface being a first inclined surface, tilting from one side to the other in the width direction W of the base 22, for example... Figure 4 As shown in the figure, the slope slopes downwards from left to right. Understandably, in actual engineering, slopes with different tapers can be set as needed to achieve precise elevation adjustments. The bottom surface of the transverse movable plate 261 is flat and parallel to the fixed plate. By moving, the transverse movable plate 261 changes its relative position to the longitudinal movable plate 263, and simultaneously changes the elevation of its top surface, thereby lifting or lowering the longitudinal movable plate 263.

[0067] Optionally, the top surface of the transverse movable plate 261 is covered with a solid self-lubricating layer to facilitate relative movement with the longitudinal movable plate 263.

[0068] Optionally, a first limiting structure is provided between the transverse movable plate 261 and the fixed base plate 27 to limit the transverse movable plate 261 from moving laterally on the fixed base plate 27. See also the following embodiments: Figure 5 The first limiting structure may include a first boss 271 on the top of the fixed base plate 27 and a longitudinal first transverse groove 2611 on the bottom of the transverse movable plate 261. The length direction L of the first transverse groove 2611 is parallel / coincides with the transverse direction. The first boss 271 can be inserted into the first transverse groove 2611 and slide along the first transverse groove 2611.

[0069] In some embodiments, please review Figure 4 Two adjusting structures 262 can be inserted into the second section 2212 of the receiving groove 221 from the lateral sides of the base 22, respectively, and can abut against the lateral sides of the transverse movable plate 261. Understandably, the distance between the two adjusting structures 262 is equal to or greater than the lateral length of the transverse movable plate 261. By adjusting the length of the adjusting structure 262 extending into the receiving groove 221, one adjusting structure 262 is moved towards the other adjusting structure 262, which abuts against the transverse movable plate 261 and pushes it towards the other adjusting structure 262, thereby achieving the effect of lateral displacement of the transverse movable plate 261. These two adjusting structures 262 solve the problem of repeatedly assembling the adjusting plate during on-site adjustments; simultaneously, since the height of the support lug 1 can be directly adjusted via the adjusting component, repeated hoisting of the equipment is avoided, thus reducing construction difficulty and improving height adjustment accuracy; when the sliding plate 23 wears down, the height of the support lug 1 can also be adjusted by rotating the adjusting component, ensuring that the upper pressure plate 24 can press the support lug 1 tightly under heat.

[0070] Optionally, the adjustment structure 262 may include a bolt 2621 and a nut 2622; wherein the bolt 2621 is screwed onto the base 22, one end of the bolt 2621 is located outside the base 22, and the other end is inserted into the receiving seat. By rotating the bolt 2621, the length extending into the receiving groove 221 can be changed; the nut 2622 is sleeved on the bolt 2621 and is located outside the base 22, used to lock after the elevation adjustment is completed to prevent the bolt 2621 from loosening.

[0071] In some embodiments, please continue reading Figure 4 A longitudinal movable plate 263 is positioned on top of a transverse movable plate 261. This longitudinal movable plate 263 can be a flat plate structure. The transverse length of the longitudinal movable plate 263 is less than the transverse length of the transverse movable plate 261. The bottom surface of the longitudinal movable plate 263 is a second inclined surface, closely abutting the top surface of the transverse movable plate 261, and sharing the same inclination direction as the top surface of the transverse movable plate 261; while the top surface of the longitudinal movable plate 263 is flat. Furthermore, the transverse sides of the longitudinal movable plate 263 abut against two fixed side plates 28, respectively, and press against the two fixed side plates 28.

[0072] Understandably, the aforementioned fixed side plate 28 serves two purposes: firstly, to fill the gap between the first groove segment 2211 and the longitudinal movable plate 263, ensuring that the longitudinal movable plate 263 can only undergo longitudinal displacement; secondly, to ensure that the two lateral sides of the longitudinal movable plate 263 can fully contact the sidewalls of the first groove segment 2211 under hot conditions, thereby limiting the extreme positions of the lug 1. Of course, the fixed side plate 28 is not a necessary structure for the lug support 2. In some embodiments without the fixed side plate 28, the lateral length of the first groove segment 2211 can be set to be the same as the lateral length of the longitudinal movable plate 263, and the longitudinal movable plate 263 can be directly constrained by the lateral sidewalls of the first groove segment 2211.

[0073] Understandably, with Figure 4 For example, the left side of the top surface of the transverse movable plate 261 is higher than its rear side. Since the longitudinal movable plate 263 is restricted by the fixed side plates 28 on both sides, it cannot move laterally. When the transverse movable plate 261 moves to the right, the left side of the transverse movable plate 261 moves closer to the longitudinal axis of the longitudinal movable plate 263, thereby raising the longitudinal movable plate 263. Lowering the height of the longitudinal movable plate 263 is the reverse operation, which will not be elaborated here.

[0074] Optionally, each surface of the longitudinal movable plate 263 is covered with a solid self-lubricating layer to facilitate the movement of the longitudinal movable plate 263, the transverse movable plate 261 and the lower sliding plate 23.

[0075] Optionally, a second limiting structure is provided between the longitudinal movable plate 263 and the transverse movable plate 261 to limit the transverse movable plate 261 from moving below the longitudinal movable plate 263 in the transverse direction. In some embodiments, please refer to... Figure 5 The second limiting structure may include a second boss 2612 located on the top of the transverse movable plate 261 and a longitudinally elongated second transverse groove 2631 located at the bottom of the longitudinal movable plate 263. The length direction L of the second transverse groove 2631 is parallel to or coincides with the transverse direction. The second boss 2612 can be inserted into the second transverse groove 2631 and slide along the second transverse groove 2631.

[0076] In some embodiments, please review Figure 4 The lower slide plate 23 is located on top of the longitudinal movable plate 263. The lower slide plate 23 can be a flat plate structure, and its size can be adapted to the bottom of the support lug 1. A self-lubricating layer can be laid on the bottom of the lower slide plate 23 to reduce the coefficient of friction of the support lug 1.

[0077] In some embodiments, please refer to Figure 5 A positioning pin 29 is provided between the lower slide plate 23 and the support ear 1. The positioning pin 29 can be inserted longitudinally into the base 11 of the support ear 1 and the lower slide plate 23 to fix the support ear 1 and the lower slide plate 23 relative to each other.

[0078] In some embodiments, please review Figure 4 Two filler pieces 25 are respectively installed on both sides of the base 11 of the support ear 1 in the horizontal direction.

[0079] Optionally, such as Figure 4 As shown, a single filler 25 has a longitudinally elongated L-shaped structure, including a first horizontal plate 251 disposed on the top of the base 11, and a first vertical plate 253 connected to the first horizontal plate 251 and located on one side of the base 11. A snap-fit ​​structure is provided between the first horizontal plate 251 and the base 11, snapping the first horizontal plate 251 onto the top of the base 11. The top of the first horizontal plate 251 is used to abut against the upper pressure plate 24. Preferably, the top surface of the first horizontal plate 251 is covered with a self-lubricating layer for friction reduction and wear resistance, ensuring that the friction coefficient of the filler 25 remains stable during the sliding of the support lug 1 and reducing wear. The first vertical plate 253 fits against the side of the base 11 and the side of the lower slide plate 23. The thickness of the two first vertical plates 253 plus the lateral length of the lug 1 is less than the distance between the two fixed side plates 28, so that the lug 1 with the filler 25 can move laterally between the two fixed side plates 28. In addition, there is a gap between the bottom of the first vertical plate 253 and the longitudinal movable plate 263 to ensure that the lateral movement of the lug 1 is not affected.

[0080] Understandably, the filling component 25 can achieve the filling and pressing effect by only setting the first horizontal plate 251. The first vertical plate 253 can be used to ensure that the entire filling component 25 is more securely installed on the support ear 1, and to prevent the filling component 25 from loosening due to friction with the upper pressure plate 24 during the displacement of the support ear 1. Another aspect is to protect the support ear 1 and prevent the support ear 1 from colliding with the fixed side plate 28 during the displacement.

[0081] Continue reading Figure 4 The snap-fit ​​structure may include a first protrusion 252 on the surface of the first horizontal plate 251 facing the top of the base 11, and a first groove 111 on the top of the base 11. The first protrusion 252 is spaced from the first vertical plate 253, and the first groove 111 is located near the lateral edge of the base 11, but is also spaced from the edge. During assembly, the first protrusion 252 is inserted into the first groove 111, and simultaneously, the structural portion between the first groove 111 and the edge of the base 11 is inserted into the gap between the first protrusion 252 and the first vertical plate 253, thereby forming a reliable snap-fit ​​connection. Understandably, friction will occur between the filler 25 and the upper pressure plate 24 during the displacement of the lug 1. This snap-fit ​​structure design ensures that the filler 25 will not detach from the lug 1.

[0082] In some embodiments, such as Figure 4As shown, two upper pressure plates 24 are fixed to the top of the base 22, located on both sides of the opening. The fixing method can be through bolts or other connecting parts, which pass through the upper pressure plates 24 and lock them to the top of the base 22. Optionally, the upper pressure plates 24 are L-shaped, with one end extending into the clearance opening and abutting against the filler 25.

[0083] Understandably, the upper pressure plate 24 can restrict the longitudinal displacement of the lug 1 by pressing the filler 25 in a hot state (if the filler 25 is pressed in a cold state, it will be difficult for the filler 25 to move in a hot state), and is pre-tightened by bolts and other connecting parts. Even if the equipment vibrates or tilts, the longitudinal displacement of the lug 1 can be avoided, thereby effectively controlling the amount of vibration or tilt of the equipment.

[0084] Optionally, see Figure 3 , Figure 5 The lug support 2 also includes a first baffle 30 located on the base 22 away from the equipment side, which is used to limit the extreme position of the lug 1 sliding outward along the radial direction of the equipment.

[0085] Optionally, the lug support 2 also includes a second baffle 31 disposed on the base 22 near the side of the equipment, for limiting the extreme position of the lug 1 sliding radially inward along the equipment.

[0086] Please read back Figure 1 In some embodiments, any first lateral support structure 400 may include a first clamp 41 fitted around the periphery of the equipment to prevent excessive local stress on the equipment; the first lateral support structure 400 also includes at least one first lateral support body 42, which is longitudinally elongated and its length direction is the same as the extension direction of the pipe end connected to the side of the equipment; one end of the first lateral support body 42 is connected to the first clamp 41, and its other end may be connected to a support or a concrete foundation to transfer horizontal loads to the support or the concrete foundation.

[0087] Preferably, such as Figure 1 As shown, a first hinge assembly 43 may be provided between the first lateral support body 42 and the first clamp 41 to allow the equipment to extend and deflect along its axial direction. Optionally, the first hinge assembly 43 may also be provided at the end of the first lateral support body 42 that is connected to the support member or the concrete foundation.

[0088] Understandably, the number and length direction of the first lateral support body 42 can be determined according to the number and direction of the pipes connecting the equipment. Generally, the first lateral support body 42 and the pipes connected to the side of the equipment are connected to opposite sides of the equipment.

[0089] like Figure 1As shown, in some embodiments, the first clamp 41 may include two arc-shaped parts that can be combined into a ring, and the two arc-shaped parts can be connected by bolts or other connecting parts.

[0090] The first lateral support body 42 can be a longitudinally elongated cylinder. Of course, the first lateral support body 42 can also be in other shapes, which are not specifically limited here.

[0091] Please see Figure 6 The first hinge assembly 43 may include a connecting lug 431, a connecting ear 432, a spherical bearing 433, and a rotating shaft 434. Specifically, the connecting lug 431 has a U-shaped structure, with its opposite side walls arranged vertically. The opening of the connecting lug 431 faces away from the first clamp 41, allowing the connecting ear 432 to extend into it. The bottom wall of the connecting lug 431 (the wall opposite to the opening) is used to engage with the first clamp 41. The spherical bearing 433 is disposed on the inner circumference of the connecting lug 431 and is fixed in the connecting lug 431 through the rotating shaft 434. The central channel of the spherical bearing 433 extends horizontally. The connecting ear 432 extends into the connecting lug 431 and is fixedly connected to the spherical bearing 433, allowing axial rotation with the spherical bearing 433 as a base point, thereby realizing the axial extension and deflection of the equipment.

[0092] Please read back Figure 1 The second lateral support structure 500 also includes a second clamp 51 and a second lateral support body 52. ​​The two ends of the second lateral support body 52 are respectively provided with second hinge components 53. The structural configuration of the second clamp 51, the second lateral support body 52, and the second hinge components 53 is basically the same as that of the first clamp 41, the first lateral support body 42, and the first hinge components 43 described above. For specific details, please refer to the first lateral support structure 400; further details will not be provided here. Notably, in the second lateral support structure 500, the second clamp 51, fitted around the pipe, and the second lateral support body 52 can be connected via an extension plate 54.

[0093] In summary, the nuclear reactor support mechanism of the present invention, designed for equipment with a high aspect ratio and requiring vertical arrangement, includes a vertical support structure 100 disposed in the middle of the equipment, and lateral support structures (400, 500) disposed on both longitudinal sides of the vertical support structure 100. During installation and operation, the vertical support structure 100 bears the vertical load, ensuring the release of self-expansion of the equipment and elongation of pipes in hot and cold states, limiting the ultimate displacement in all directions of the middle of the equipment, and ensuring the verticality of the equipment; furthermore, the lateral support structures (400, 500) limit the horizontal displacement of the upper and lower parts of the equipment, and allow for a small amount of axial elongation and deflection of the equipment, which is beneficial for optimizing the stress on the equipment and pipes and improving the reliability of the equipment.

[0094] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A nuclear reactor support mechanism, applied to a vertically arranged elongated device, characterized in that, The nuclear reactor support structure includes several vertical support structures (100) for surrounding the outside of the equipment to transmit the vertical load of the equipment. Any vertical support structure (100) includes a lug (1) for fixing to the side of the equipment, and an ear-type support (2) for supporting the lug (1); the lug (1) includes a base (11) and at least one rib (12) fixed to the base (11) for fixed connection with the equipment; one end of the base (11) is disposed in the ear-type support (2) and is capable of displacement in the ear-type support (2) along the length direction of the base and / or the width direction of the base; The nuclear reactor support mechanism further includes at least one first lateral support structure (400) capable of transmitting the horizontal load of the equipment. The first lateral support structure (400) includes at least one longitudinal first lateral support body (42) whose length direction is the same as the radial direction of the equipment. One end of the first lateral support body (42) is used to connect to one circumferential side of the equipment. The lug support (2) includes a base (22) and a sliding plate (23); the base (22) has a receiving groove (221) extending through its width, and the sliding plate (23) is disposed in the receiving groove (221) and can move in the base (22) along the length direction of the base and / or its width direction; one end of the base (11) is relatively fixedly disposed on the sliding plate (23) to allow the lug (1) to release lateral displacement requirements; The ear-type support (2) also includes a height adjustment component (26) for adjusting the height position of the ear (1). The height adjustment component (26) includes a longitudinal movable plate (263) disposed at the bottom of the lower slide plate (23) and a transverse movable plate (261) disposed at the bottom of the longitudinal movable plate (263). The transverse movable plate (261) and the longitudinal movable plate (263) are attached to each other to form a friction pair, and the surfaces of the transverse movable plate (261) and the longitudinal movable plate (263) that are attached to each other are inclined surfaces that are inclined along the length direction of the base. The longitudinal movable plate (263) and the base (22) are fixed relative to each other in the length direction of the base. The transverse movable plate (261) can be moved back and forth in the receiving groove (221) along the length direction of the base to lift or sink the longitudinal movable plate (263).

2. The nuclear reactor support mechanism according to claim 1, characterized in that, The length direction of the first lateral support body (42) is parallel to or coincides with the extension direction of the pipe end connected to the side of the equipment.

3. The nuclear reactor support mechanism according to claim 1, characterized in that, The first lateral support structure (400) further includes a first clamp (41) for being fitted onto the equipment; one end of the first lateral support body (42) is connected to the first clamp (41).

4. The nuclear reactor support mechanism according to claim 1, characterized in that, The first lateral support structure (400) further includes a first hinge assembly (43) disposed at at least one end of the first lateral support body (42) for allowing the device to extend and deflect along its axial direction.

5. The nuclear reactor support mechanism according to claim 1, characterized in that, The nuclear reactor support mechanism further includes a second lateral support structure (500) capable of transmitting the horizontal load of the equipment; the second lateral support structure (500) includes a second clamp (51) and a longitudinally elongated second lateral support body (52); the second clamp (51) is used to be sleeved on a pipe coaxially connected to the end of the equipment, the length direction of the second lateral support body (52) is parallel to the radial direction of the equipment, and one end of it is connected to the circumferential side of the second clamp (51); The first lateral support structure (400) and the second lateral support body (52) are located on the longitudinal sides of the vertical support structure (100), respectively.

6. The nuclear reactor support mechanism according to claim 5, characterized in that, The second lateral support structure (500) further includes a second hinge assembly (53) disposed at at least one end of the second lateral support body (52) for allowing the device to extend and deflect along its axial direction.

7. The nuclear reactor support mechanism according to claim 5, characterized in that, The length direction of the second lateral support body (52) is parallel to or coincides with the extension direction of the pipe end connected to the side of the equipment.

8. The nuclear reactor support mechanism according to claim 1, characterized in that, The ear-type support (2) further includes two filler (25) installed on both sides of the base (11) along the length direction of the base, and two upper pressure plates (24) installed on the top of the base (22). The two upper pressure plates (24) abut against the two filler (25) respectively, and press the filler (25) and the base (11) onto the lower slide plate (23) to limit the longitudinal displacement of the support ear (1).

9. The nuclear reactor support mechanism according to claim 1, characterized in that, The nuclear reactor support mechanism is configured for use on a half-pool, half-loop reactor. The nuclear reactor support mechanism is connected to the main heat exchanger (61) or the main pump (62) of the half-pool, half-loop reactor and supports the main heat exchanger (61) or the main pump (62).

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