JP2011053207A - Device for supporting apparatus for nuclear power plant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress upsizing of a load transmission device in a device for supporting an apparatus for a nuclear power plant. <P>SOLUTION: The support device 1 regulates movement of a first predetermined direction of a steam generator SG, for example, as the apparatus for the nuclear power plant. The support device includes a link mechanism 12 as a loading direction disassembling means that is arranged between the steam generator SG and a base WB for fixing, receives force from the steam generator SG, and generates a force of a second predetermined direction that is smaller than a force of the first predetermined direction and has an angle of the first predetermined direction, and a snubber 14 as a load transmission device where the generated resistance force increases as the force input speed is high even when the magnitude of the input force is the same and which can telescope in the second predetermined direction by receiving the force of the second predetermined direction from the link mechanism 12. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a nuclear power plant equipment support apparatus that supports equipment used in a nuclear power plant.

  Nuclear power plants are designed to ensure sufficient safety even in the event of an earthquake. Specifically, the nuclear power plant includes, for example, a support member that contacts the nuclear power plant equipment in the horizontal direction. The support member is a protrusion that protrudes from the wall of the reactor containment vessel toward the nuclear power plant equipment.

  Here, for example, when an earthquake occurs, the support protrusion receives a horizontal load acting on the nuclear power plant equipment by contacting the nuclear power plant equipment in the horizontal direction. Thereby, the protrusion part for support supports the apparatus for nuclear power plants, when an earthquake occurs. However, in the nuclear power plant, the nuclear power plant equipment and the piping connecting the nuclear power plant equipment receive heat, so that the nuclear power plant equipment and the piping thermally expand. Thereby, the support point of the nuclear power plant equipment moves from the position before the thermal expansion of the piping by the amount of thermal expansion of the nuclear power plant equipment itself and the piping.

  Therefore, the support protrusions need to be formed so as to be in contact with the nuclear power plant equipment in accordance with the position of the nuclear power plant equipment when the nuclear power plant equipment and the piping are thermally expanded. Here, the smaller the gap between the support projection and the nuclear power plant equipment, the better. This is because, when an earthquake occurs, the load received by the nuclear power plant equipment is reduced as the gap between the support protrusion and the nuclear power plant equipment is smaller.

  However, the gap between the support protrusion and the nuclear power plant equipment is slightly changed depending on the case. Therefore, it is difficult to completely eliminate the gap between the support protrusion and the nuclear power plant equipment. Thus, for example, Patent Document 1 discloses a technology in which a ring support is provided in a steam generator that is a nuclear power plant device, and the ring support is supported on a concrete peripheral wall via a snubber as a load transmission device. Here, the load transmission device generates a large resistance force when the force input speed is high, and generates a small resistance force when the speed is low, even if the input force is the same magnitude. Device.

Japanese Utility Model Publication No. 63-134204

  In the technology disclosed in Patent Document 1, the snubber expands and contracts when the pipe connecting the nuclear power plant equipment thermally expands. For example, when an earthquake occurs, the resistance of the snubber increases and the nuclear power plant increases. Regulate the movement of power plant equipment. However, for example, since the mass of the steam generator is about 300 tons, in the case of the technique disclosed in Patent Document 1, the load transmission device may be increased in size.

  When the load transmission device is enlarged, the space required for installing the equipment support device for a nuclear power plant increases. Further, the labor required for the load transmission device maintenance work, for example, the load transmission device removal work and attachment work increases. In particular, since the steam generator is a primary system device, the work for removing and attaching the load transmission device is limited in terms of work time and the like in order to ensure the safety of workers. Therefore, when the load transmission device is used to support the nuclear power plant equipment, the labor required for maintenance of the load transmission device is particularly increased when the load transmission device is enlarged.

  This invention is made | formed in view of the above, Comprising: It aims at suppressing the enlargement of a load transmission apparatus.

  In order to solve the above-described problems and achieve the object, a nuclear power plant equipment support device according to the present invention is a nuclear power plant equipment support device that regulates the movement of the nuclear power plant equipment in a first predetermined direction. And being arranged between the nuclear power plant equipment and the fixing foundation, receiving a force from the nuclear power plant equipment, and a force smaller than the force in the first predetermined direction, Load direction decomposing means for generating a force in a second predetermined direction having an angle in the first predetermined direction, and an apparatus in which the resistance force generated increases as the input speed of the force increases even if the input force is the same magnitude And a load transmission device that receives the force in the second predetermined direction from the load direction decomposing means and can expand and contract in the second predetermined direction.

  With the above configuration, in the equipment support device for a nuclear power plant according to the present invention, the magnitude of the force received by the load transmission device is smaller than when the load transmission device is arranged to expand and contract in the first predetermined direction. Thereby, the apparatus support apparatus for nuclear power plants which concerns on this invention can suppress the enlargement of a load transmission apparatus.

  As a preferred aspect of the present invention, the load direction disassembling means includes a first link disposed on the nuclear power plant equipment side between the nuclear power plant equipment and the fixing base, and the fixing. It is desirable that the second link attached to the work foundation is a link mechanism that is connected so as to be able to rotate with respect to each other.

  With the above configuration, in the nuclear power plant equipment support device according to the present invention, the load direction decomposing means receives the force from the nuclear power plant equipment and decomposes the force component in the first predetermined direction. A force in a predetermined direction can be created.

  As a preferred aspect of the present invention, it is desirable that one end of the load transmission device is attached to the link mechanism and the other end is attached to the fixing base.

  With the above configuration, the load transmission device of the equipment support device for a nuclear power plant according to the present invention can receive a reaction force against the load transmitted through the link mechanism from the fixing base. Thereby, the load transmission apparatus of the equipment support apparatus for nuclear power plants which concerns on this invention can regulate the movement of the equipment for nuclear power plants.

  As a preferred aspect of the present invention, the link mechanism includes a first link mechanism and a second link mechanism that are bent in directions opposite to each other, and one end of the load transmission device is the first link mechanism. It is desirable that the other end is connected to the second link mechanism.

  With the above configuration, in the equipment support device for a nuclear power plant according to the present invention, the direction of the load transmitted from the first link mechanism to the load transmission device is opposite to the direction of the load transmitted from the second link mechanism to the load transmission device. . Thereby, the apparatus support apparatus for nuclear power plants which concerns on this invention can make a load transmission apparatus regulate the movement of the apparatus for nuclear power plants, even if a load transmission apparatus is not attached to the foundation for fixation.

  As a preferred aspect of the present invention, it is desirable that the link mechanism is connected to the nuclear power plant equipment.

  With the above configuration, the nuclear power plant equipment support device according to the present invention can support the nuclear power plant equipment even when the nuclear power plant equipment is about to move away from the fixing base.

  As a preferred aspect of the present invention, the link mechanism is provided in contact with the nuclear power plant equipment, and the nuclear power plant equipment support device is used for the nuclear power plant among a part of the link mechanism. It is desirable to provide pressing force generating means for pressing a portion facing the device against the nuclear power plant device.

  With the above-described configuration, the nuclear power plant equipment support device according to the present invention is a load transmission device that uses the force applied by the pressing force generating means to the link mechanism when the nuclear power plant equipment moves in a direction away from the fixing base. The portion of the link mechanism that opposes the nuclear power plant equipment support device is pressed against the nuclear power plant equipment.

  Thereby, the part which opposes the apparatus support apparatus for nuclear power plants among some link mechanisms moves so that the apparatus for nuclear power plants may be followed. Therefore, the apparatus support apparatus for nuclear power plants which concerns on this invention can reduce the clearance gap between the part which opposes the apparatus support apparatus for nuclear power plants among some link mechanisms, and the apparatus for nuclear power plants.

  Therefore, the nuclear power plant equipment support apparatus according to the present invention does not require the link mechanism to be connected to the nuclear power plant equipment. Thereby, the apparatus support apparatus for nuclear power plants which concerns on this invention is easily removed by the part which does not need to be removed from the apparatus for nuclear power plants, for example in the case of a maintenance. Further, for example, even when a mounting portion for attaching the link mechanism to the nuclear power plant equipment cannot be formed, the nuclear power plant equipment support device according to the present invention includes the nuclear power plant equipment and the fixing base. Can be arranged between.

As a preferred embodiment of the present invention,
The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment and a link attached to the fixing foundation, the second link mechanism connected so as to be rotatable by a joint;
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container is connected to the first link mechanism in a state of receiving a tensile force when the first link mechanism is bent, and the second container is subjected to a compressive force when the second link mechanism is bent. And connected to the second link mechanism.

As a preferred embodiment of the present invention,
The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A second link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A third link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment, and a link attached to the fixing base, and a fourth link mechanism coupled so as to be rotatable by a joint;
When the first link mechanism and the second link mechanism are bent, the joints of the two are moved so as to move away from each other, and when the third link mechanism and the fourth link mechanism are bent, the joints of the two are mutually connected. It is arranged to move in the approaching direction,
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container has one end connected to the first link mechanism and the other end connected to the second link mechanism, and the second container has one end connected to the third link mechanism and the other end connected to the second link mechanism. It is connected to the fourth link mechanism.

As a preferred embodiment of the present invention,
The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment and a link attached to the fixing foundation, the second link mechanism connected so as to be rotatable by a joint;
The first link mechanism and the second link mechanism are arranged so that both joints move in a direction away from each other when bent.
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container has one end connected to the first link mechanism and the other end connected to the second link mechanism, and the second container has one end connected to the second link mechanism and the other end connected to the second link mechanism. It is connected to a fixed foundation.

  The present invention can suppress an increase in the size of the load transmission device.

FIG. 1 is a perspective view showing a reactor pressure vessel, a steam generator, and a pump. FIG. 2 is a schematic view showing the side of the steam generator in front. FIG. 3 is an enlarged schematic diagram illustrating the support device according to the first embodiment. FIG. 4 is an explanatory diagram showing the magnitude of the load transmitted to the snubber. FIG. 5 is an enlarged schematic diagram illustrating the support device according to the second embodiment. FIG. 6 is an enlarged schematic diagram illustrating the support device according to the third embodiment. FIG. 7 is an enlarged schematic diagram illustrating the support device according to the fourth embodiment. FIG. 8 is an enlarged schematic diagram illustrating the support device according to the fifth embodiment. FIG. 9 is an enlarged schematic view showing a modified support device. FIG. 10 is an enlarged schematic view of the support device according to the sixth embodiment. FIG. 11 is an enlarged schematic diagram illustrating the support device according to the seventh embodiment. FIG. 12 is an enlarged schematic diagram illustrating the support device according to the eighth embodiment.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following embodiment. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or that are substantially the same.

(Embodiment 1)
FIG. 1 is a perspective view showing a reactor pressure vessel, a steam generator, and a pump. As shown in FIG. 1, the nuclear power plant includes a reactor pressure vessel RV, a steam generator SG, and a pump RCP in the reactor containment vessel. The reactor pressure vessel RV is fixed to the foundation of the reactor containment vessel. The steam generator SG is provided in the vicinity of the reactor pressure vessel RV and is connected to the reactor pressure vessel RV by a pipe PA. The pump RCP is provided in the vicinity of the steam generator SG and is connected to the steam generator SG by a pipe PA and is also connected to the reactor pressure vessel RV by a pipe PA.

  Here, the reactor pressure vessel RV is fixed to the foundation of the reactor containment vessel, whereas the steam generator SG and the pump RCP are not fixed to the basis of the reactor containment vessel. The steam generator SG and the pump RCP are each installed on the foundation of the reactor containment vessel via the rotating legs 11 so that they can move when the pipe PA is thermally expanded. The rotating leg 11 is connected to the foundation so that one end can rotate, and is connected to the steam generator SG and the pump RCP so that the other end can rotate.

  This is because the steam generator SG and the pump RCP receive a force in a direction that can be released from the reactor pressure vessel RV due to the thermal expansion of the pipe PA. Note that when the temperature of the pipe PA is lowered, the steam generator SG and the pump RCP receive a force in a direction approaching the reactor pressure vessel RV. Therefore, the steam generator SG and the pump RCP are connected to the atom via the rotating leg 11 so that the rotating leg 11 can be rotated and the steam generator SG and the pump RCP can move when the pipe PA is thermally expanded. Installed on the foundation of the containment vessel. Here, the steam generator SG and the pump RCP are also supported by a support device as an equipment support device for a nuclear power plant in addition to the rotating leg 11. The configuration of the support device will be described below.

  FIG. 2 is a schematic view showing the side of the steam generator in front. Hereinafter, the nuclear power plant equipment supported by the support device 1 will be described as a steam generator SG. However, the nuclear power plant equipment supported by the support device 1 is not limited to the steam generator SG, and may be, for example, a pump RCP. Good. As shown in FIG. 2, the steam generator SG is provided with a fixing base WB around it. The fixing base WB is provided so as to surround the steam generator SG.

  The support device 1 is disposed between the steam generator SG and the fixing base WB. In the present embodiment, a plurality of support devices 1 are provided. Specifically, the support device 1 is provided in three stages in the central axis direction of the steam generator SG, that is, in the vertical direction, for example. For example, six support devices 1 are provided in each stage in the circumferential direction of the side periphery of the steam generator SG. Thus, the steam generator SG of the present embodiment is supported on the fixing base WB by a total of twelve support devices 1.

  FIG. 3 is an enlarged schematic diagram illustrating the support device according to the first embodiment. The support device 1 is configured to include a link mechanism 12 as a load direction decomposition means and a snubber 14 as a load transmission device. The link mechanism 12 includes a first link 121 and a second link 122. The first link 121 is disposed on the steam generator SG side, and the second link 122 is disposed on the fixing base WB side. The first link 121 and the second link 122 are connected by a joint 13 so as to be able to rotate with each other.

  The first link 121 is connected so that the end 121a opposite to the joint 13 can rotate to the steam generator SG. Specifically, the end 121a of the first link 121 is connected to a mounting portion 15a formed in the steam generator SG. Thus, the attachment part 15a is handled as a part of the steam generator SG here. The second link 122 is connected so that the end 122a on the side opposite to the joint 13 can rotate to the fixing base WB. Specifically, the end portion 122a of the first link 121 is connected to a mounting portion 15b formed on the fixing base WB. Here, the attachment portion 15b is handled as a part of the fixing base WB.

  Here, in the present embodiment, the support device 1 is configured such that, for example, the attachment portion 15a is formed in the steam generator SG so that a virtual line connecting the end portion 121a and the end portion 122a is horizontal, and the fixing base is provided. A mounting portion 15b is formed on the WB. However, in the support device 1, the virtual line connecting the end portion 121a and the end portion 122a does not necessarily have to be horizontal. A specific configuration of the support device in the case where a virtual line connecting the end 121a and the end 122a is inclined with respect to the horizontal will be described in a second embodiment to be described later.

  Further, in the support device 1 illustrated in FIG. 3, the first link 121 and the second link 122 are coupled so that the link mechanism 12 is bent in a mountain shape toward the upper side in the vertical direction. However, as shown in FIG. 2, in the support device 1, the first link 121 and the second link 122 may be coupled so that the link mechanism 12 is bent in a valley toward the lower side in the vertical direction.

  The snubber 14 is, for example, a hydraulic damper device that includes a cylinder and a piston. The snubber 14 is not limited to a hydraulic type, and may be a mechanical load transmission device called a mechanical snubber. The snubber 14 expands and contracts when the position of the steam generator SG is about to change gradually, such as when the pipe PA shown in FIG. 1 is thermally expanded. However, the snubber 14 has a greater resistance when the steam generator SG is about to change abruptly, such as when an earthquake occurs, than when the position of the steam generator SG is about to change gradually. Then, the movement of the steam generator SG is regulated. Here, as shown in FIG. 3, a direction in which the steam generator SG approaches the fixing base WB and a direction in which the steam generator SG moves away from the fixing base WB are defined as a first predetermined direction A. In the present embodiment, the first predetermined direction A coincides with the horizontal direction.

  The snubber 14 is connected to the link mechanism 12 so as to be rotatable. The snubber 14 is connected to the joint 13 of the link mechanism 12, for example. Moreover, the snubber 14 is connected so that the end part 14a on the opposite side to the joint 13 can rotate to the protrusion part WBa of the fixing base WB. The protrusion WBa is formed, for example, by projecting horizontally from the fixing base WB toward the steam generator SG. Here, the protrusion WBa is handled as a part of the fixing base WB. Thereby, the snubber 14 expands and contracts in the second predetermined direction B perpendicular to the first predetermined direction A, in the vertical direction in the present embodiment.

  By connecting the snubber 14 to the protrusion WBa, the snubber 14 can receive a reaction force against the force transmitted through the link mechanism 12 from the protrusion WBa that is a part of the fixing base WB. Thereby, the support apparatus 1 can control the movement of the steam generator SG in the first predetermined direction A by the snubber 14.

  FIG. 4 is an explanatory diagram showing the magnitude of the force transmitted to the snubber. A force F01 illustrated in FIG. 4 indicates the magnitude of the force in the first predetermined direction A transmitted to the support device 1. The force F02 indicates the magnitude of the force in the longitudinal direction of the first link 121 transmitted to the support device 1. The force F03 indicates the magnitude of the force in the second predetermined direction B transmitted to the support device 1. Here, if the angle formed by the first link 121 and the first predetermined direction A shown in FIG. 3 is θ, the force F03 is F01 · tan θ.

  Therefore, in this case, if θ is an angle smaller than 45 degrees, the force F03 is smaller than the force F01. That is, the support device 1 is provided with the snubber 14 via the link mechanism 12 rather than the case where the snubber 14 is attached to extend and contract in the first predetermined direction A if θ is an angle smaller than 45 degrees. However, the force received by the snubber 14 can be reduced. Thereby, the support apparatus 1 can reduce the load capacity required for the snubber 14. As a result, the support device 1 can suppress an increase in the size of the snubber 14.

  As described above, in the support device 1, the link mechanism is arranged so that the force in the second predetermined direction B is smaller than the first predetermined direction A in the force received by the support device 1, and the second predetermined The snubber 14 is disposed between the steam generator SG and the fixing base WB via the link mechanism 12 so as to expand and contract in the direction B. Thereby, the support apparatus 1 can reduce the force which the snubber 14 receives, and can suppress the enlargement of the snubber 14.

  Here, the snubber 14 is not necessarily connected to the joint 13. If the force received by the snubber 14 is smaller than when it is attached to expand and contract in the first predetermined direction A, the portion other than the end portion 121a and the end portion 122a, that is, the end portion of the link mechanism 12 portion. 121a or the end 122a and the joint 13 may be connected. However, in this case, as the connecting portion between the snubber 14 and the link mechanism 12 approaches the end 121a or the end 122a, the force received by the snubber 14 by the lever principle increases. Therefore, it is more preferable that the snubber 14 is connected to the joint 13. Even with this configuration, the support device 1 can reduce the force received by the snubber 14. Therefore, the support device 1 can suppress the enlargement of the snubber 14.

(Embodiment 2)
FIG. 5 is an enlarged schematic diagram illustrating the support device according to the second embodiment. The support device 2 according to the second embodiment is characterized in that it does not require the protrusion WBa shown in FIG. As shown in FIG. 5, the support device 2 includes a link mechanism 22 as a load direction disassembling unit and a snubber 24 as a load transmission device. The link mechanism 22 includes a first link 221 and a second link 222. The first link 221 is disposed on the steam generator SG side, and the second link 222 is disposed on the fixing base WB side. The first link 221 and the second link 222 are connected by a joint 23 so as to be able to rotate with each other.

  The first link 221 is connected so that the end 221a opposite to the joint 23 can rotate to the steam generator SG. The second link 222 is connected so that the end 222a opposite to the joint 23 can rotate to the fixing base WB. Here, in the support device 2, for example, a virtual line that connects the end 221a and the end 222a is not horizontal. As described above, in the link mechanism, the virtual line connecting the end 221a and the end 222a does not necessarily have to be horizontal.

  The snubber 24 is connected to the link mechanism 22 so as to be rotatable. The snubber 24 is connected to the joint 23 of the link mechanism 22, for example. Further, the snubber 24 is connected so that the end 24a opposite to the joint 23 can be rotated to the fixing base WB. Thereby, the snubber 24 expands and contracts in the second predetermined direction C having an angle with respect to the first predetermined direction A. Here, the second predetermined direction C is not a direction orthogonal to the first predetermined direction A. That is, the second predetermined direction C is not the vertical direction. Thus, the snubber does not necessarily have to expand and contract in the vertical direction.

  With the above configuration, the force component transmitted from the steam generator SG to the support device 2 is decomposed so that the force in the second predetermined direction C is smaller than the force in the first predetermined direction A. Thereby, the support apparatus 2 can produce a force in the second predetermined direction C. Therefore, the force received by the snubber 24 can be reduced when the snubber 24 is provided so as to expand and contract in the second predetermined direction C, rather than the snubber 24 attached so as to extend and contract in the first predetermined direction A. Thereby, the support apparatus 2 can reduce the load capacity required for the snubber 24. As a result, the support device 2 can suppress an increase in the size of the snubber 24.

  Moreover, as for the support apparatus 2, the snubber 24 is attached to the fixed foundation WB which is the same surface as the surface to which the 2nd link 222 is attached, without the snubber 24 being attached to the protrusion part WBa shown in FIG. As a result, the support device 2 can be easily attached to the support device 2 because the protrusion portion WBa is not required.

  In the support device 2 shown in FIG. 5, a virtual line connecting the end 221a and the end 222a is inclined with respect to the horizontal. Thereby, even if the support apparatus 2 has the same link length as that of the link mechanism 12 of the first embodiment, the steam generator SG required for mounting between the steam generator SG and the fixing base WB The horizontal distance between the fixing base WB can be reduced. That is, the support device 2 can be attached in a narrower space.

  Here, the support device 2 shown in FIG. 5 has the end 24a of the snubber 24 connected to the fixing base WB, but the support device 2 has, for example, the end 24a of the snubber 24 connected to the steam generator SG. May be. Also in this case, the snubber 24 is provided to expand and contract in a second predetermined direction having an angle with respect to the first predetermined direction A. Even in this configuration, the support device 2 can suppress an increase in the size of the snubber 24.

(Embodiment 3)
FIG. 6 is an enlarged schematic diagram illustrating the support device according to the third embodiment. The support device 3 of the third embodiment is characterized in that the snubber is not attached to the fixing base WB. As shown in FIG. 6, in the support device 3, the link mechanism 30 is configured with two of an upper link mechanism 31 as a first link mechanism and a second link mechanism 32 as a second link mechanism.

  The upper link mechanism 31 includes an upper first link 311 and an upper second link 312. The first link 311 is disposed on the steam generator SG side, and the second link 312 is disposed on the fixing base WB side. The instep first link 311 and the instep second link 312 are connected to each other by an instep joint 33 so as to be able to rotate with each other. The first link 311 is connected so that the end 311a opposite to the first joint 33 can rotate to the steam generator SG. The upper second link 312 is connected so that the end 312a opposite to the upper joint 33 can rotate to the fixing base WB.

  The second link mechanism 32 includes a second first link 321 and a second second link 322. The second link 321 is disposed on the steam generator SG side, and the second link 322 is disposed on the fixing base WB side. The second link 321 and the second link 322 are connected to each other by a second joint 34 so as to be rotatable. The second link 321 is connected so that the end 321a opposite to the second joint 34 can be rotated to the steam generator SG. The second link 322 is connected so that the end 322a on the side opposite to the second joint 34 can rotate to the fixing base WB.

  The second link mechanism 32 bends in the direction opposite to the direction in which the first link mechanism 31 bends. That is, when the second link mechanism 32 is bent, the second joint 34 moves in a direction opposite to the direction in which the first joint 33 moves. In the present embodiment, the link mechanism 30 is configured so that the upper joint 33 and the end joint 34 move in directions away from each other when the link mechanism 30 is bent.

  The snubber 35 as a load transmission device has one end 35 a attached to the upper link mechanism 31 and the other end 35 b attached to the second link mechanism 32. In the present embodiment, for example, the snubber 35 has one end 35 a attached to the upper joint 33 and the other end 35 b attached to the end joint 34. Thus, when the link mechanism 30 is bent, the snubber 35 expands and contracts between the upper link mechanism 31 and the second link mechanism 32 in a second predetermined direction B having an angle in the first predetermined direction A, for example, in the vertical direction.

  However, the snubber 35 is not necessarily connected to the joint. If the force received by the snubber 35 is smaller than when attached so as to expand and contract in the first predetermined direction A, the end 35a is not the end 311a or the end 312a among the portions of the upper link mechanism 31. That is, the end portion 311 a or the end portion 312 a may be connected to the upper joint 33. Further, if the snubber 35 receives less force than the case where the snubber 35 is attached to expand and contract in the first predetermined direction A, the end 35b is a portion other than the end 321a and the end 322a, that is, the end. 321a or the end 322a and the end joint 34 may be connected.

  Here, in the support device 3, the direction of the force transmitted from the upper link mechanism 31 to the snubber 35 is opposite to the direction of the force transmitted from the second link mechanism 32 to the snubber 35. Thereby, even if the snubber 35 is not attached to the fixing base WB, the support device 3 can regulate the movement of the steam generator SG in the first predetermined direction A.

  With the above configuration, the force component transmitted from the steam generator SG to the support device 3 is decomposed so that the force in the second predetermined direction B is smaller than the force in the first predetermined direction A. Thereby, the support device 3 can generate a force in the second predetermined direction B. Therefore, the support device 3 reduces the force received by the snubber 35 when the snubber 35 is attached to extend and contract in the second predetermined direction B, rather than the snubber 35 attached to extend and contract in the first predetermined direction A. it can. Thereby, the support apparatus 3 can reduce the load capacity required for the snubber 35. As a result, the support device 3 can suppress an increase in the size of the snubber 35.

  Further, in the support device 3, the snubber 35 is not attached to the protrusion WBa or the fixing base WB shown in FIG. Thereby, the support device 3 regulates the movement of the steam generator SG in the first predetermined direction A even when, for example, the fixing base WB has no space for forming the protrusion WBa or the attachment portion. it can.

(Embodiment 4)
FIG. 7 is an enlarged schematic diagram illustrating the support device according to the fourth embodiment. The support device 4 of the fourth embodiment is characterized in that the link mechanism 30 as the load direction decomposition means is not connected to the steam generator SG. The support device 4 has a configuration similar to that of the support device 3 shown in FIG. 6, but newly includes a contact member 41 and a spring 42 as a pressing force generating means. The contact member 41 is a member formed according to the shape of the surface of the steam generator SG. The contact member 41 is not fixed to the steam generator SG. The contact member 41 can contact the steam generator SG and can be separated from the steam generator SG.

  The support device 4 is attached to the end 311a of the upper link mechanism 31 and the end 321a of the end link mechanism 32 so that the contact member 41 can rotate. Further, the support device 4 is provided with a spring 42 between the upper link mechanism 31 and the second link mechanism 32. The spring 42 applies a force to the upper link mechanism 31 and the second link mechanism 32 to bend the upper link mechanism 31 and the second link mechanism 32 so that the contact member 41 is pressed against the steam generator SG. Note that the force generated by the spring 42 is greater than the force required to extend and retract the snubber 35.

  With the above configuration, when the steam generator SG moves in a direction away from the fixing base WB, the support device 4 causes the snubber 35 to expand and contract by the force applied by the spring 42 to the link mechanism, so that the contact member 41 becomes the steam generator. Pressed against SG. Thereby, the contact member 41 moves to follow the steam generator SG. Therefore, the support device 4 can reduce the gap between the contact member 41 and the steam generator SG. In FIG. 7, a gap is drawn between the contact member 41 and the steam generator SG, but this is drawn for convenience of explanation.

  With this configuration, the support device 4 does not require the link mechanism 30 to be connected to the steam generator SG. Thereby, the support apparatus 4 is easily removed because it is not necessary to be removed from the steam generator SG at the time of maintenance, for example. For example, even if it is a case where the attachment part for attaching a link mechanism to the steam generator SG cannot be formed, the support apparatus 4 can be arrange | positioned between the steam generator SG and the foundation WB for fixation. .

  On the other hand, when the link mechanism 30 is connected to the steam generator SG as in the support device 3 shown in FIG. 6, the support device 3 is moved in a direction in which the steam generator SG moves away from the fixing base WB. Can also support the steam generator SG.

(Embodiment 5)
FIG. 8 is an enlarged schematic diagram illustrating the support device according to the fifth embodiment. The support device 5 of the fifth embodiment is characterized in that the link mechanism 50 as the load direction disassembling means is formed in a substantially M shape. As shown in FIG. 8, in the support device 5, the link mechanism 50 is configured by two of an upper link mechanism 51 as a first link mechanism and a second link mechanism 52 as a second link mechanism.

  The upper link mechanism 51 includes an upper first link 511 and an upper second link 512. The first link 511 is disposed on the steam generator SG side, and the second link 512 is disposed on the fixing base WB side. The instep first link 511 and the instep second link 512 are connected by an instep joint 53 so as to be able to rotate with each other. The first link 511 is connected so that the end 511a on the side opposite to the first joint 53 can rotate to the steam generator SG.

  Here, in the upper link mechanism 51, the end portion 512 a opposite to the upper joint 53 is arranged closer to the steam generator SG than the upper joint 53. Thereby, the former link mechanism 51 makes the shape folded so that it might be turned back to the steam generator SG side. Further, the fixing base WB is formed with a protrusion WBb. The protruding portion WBb is formed, for example, by projecting horizontally from the fixing base WB toward the steam generator SG. The instep second link 512 is connected so that the end portion 512a on the opposite side to the instep joint 53 can rotate to the protrusion portion WBb.

  The second link mechanism 52 includes a second first link 521 and a second second link 522. The second link 521 is disposed on the steam generator SG side, and the second link 522 is disposed on the fixing base WB side. The second link 521 and the second link 522 are connected by a second joint 54 so as to be able to rotate with each other. The first link 521 is connected so that the end 521a opposite to the second joint 54 can rotate to the steam generator SG.

  Here, in the second link mechanism 52, the end 522a opposite to the second joint 54 is disposed closer to the steam generator SG than the second joint 54 is. Thereby, the B link mechanism 52 makes the shape folded so that it might be turned back to the steam generator SG side. Further, the fixing base WB is formed with a protrusion WBb. The protruding portion WBb is formed, for example, by projecting horizontally from the fixing base WB toward the steam generator SG. The second link 522 is connected so that the end 522a on the side opposite to the second joint 54 can turn to the protrusion WBb.

  The link mechanism 50 is provided such that the distance between the first link 511 and the first link 521 decreases from the steam generator SG toward the fixing base WB. Further, in the link mechanism 50, when the distance between the steam generator SG and the fixing base WB changes, the direction in which the instep joint 53 moves is opposite to the direction in which the end joint 54 moves. Specifically, when the steam generator SG approaches the fixing base WB, the instep joint 53 and the end joint 54 move in directions toward each other. Further, when the steam generator SG moves away from the fixing base WB, the upper joint 53 and the second joint 54 move in a direction in which the first joint 53 and the second joint 54 move away from each other.

  The snubber 55 as a load transmission device has one end 55 a attached to the upper link mechanism 51 and the other end 55 b attached to the end link mechanism 52. In the present embodiment, for example, the snubber 55 has one end 55 a attached to the upper joint 53 and the other end 55 b attached to the end joint 54. Accordingly, when the link mechanism 50 is bent, the snubber 55 expands and contracts between the upper link mechanism 51 and the second link mechanism 52 in a second predetermined direction B having an angle in the first predetermined direction A, for example, in the vertical direction.

  However, the snubber 55 is not necessarily connected to the joint. If the snubber 55 receives less force than the case where it is attached so as to expand and contract in the first predetermined direction A, the end portion 55a is other than the end portion 511a and the end portion 512a in the portion of the upper link mechanism 51. , That is, the end portion 511 a or the end portion 512 a and the upper joint 53 may be connected. Further, if the snubber 55 receives less force than the case where the snubber 55 is attached so as to expand and contract in the first predetermined direction A, the end 55b is a portion other than the end 521a and the end 522a, that is, the end. It may be connected between 521a or the end 522a and the end joint 54.

  With the above configuration, the support device 5 has a shape in which the link mechanism 50 is folded back to the steam generator SG side, so that the dimension in the first predetermined direction A is reduced. Thereby, the support apparatus 5 can reduce the distance of the 1st predetermined direction A between the steam generator SG and the fixing foundation WB required when it is attached between the steam generator SG and the fixing foundation WB. That is, the support device 5 can be attached in a narrower space.

(Modification)
FIG. 9 is an enlarged schematic view showing a modified support device. The support device 6 of the modification is different from the support device 5 shown in FIG. 8 in the shape of the link mechanism 50. The support device 6 is provided so that the distance between the first link 511 and the first link 521 increases from the steam generator SG toward the fixing base WB.

  Thereby, the support apparatus 6 can make the magnitude | size of the attaching part 61 formed in the steam generator SG smaller than the support apparatus 5 shown in FIG. Therefore, the support device 6 can reduce a space required for attaching the link mechanism 50 to the steam generator SG among the portions of the steam generator SG.

  However, the support device 5 shown in FIG. 8 has a reduced length in the expansion / contraction direction than the support device 6 shown in FIG. Therefore, when a sufficient space can be secured in the steam generator SG, the support device 5 shown in FIG. 8 is provided between the steam generator SG and the fixing base WB to secure a sufficient space in the steam generator SG. If this is not possible, the support device 6 shown in FIG. 9 is preferably provided between the steam generator SG and the fixing base WB.

(Embodiment 6)
FIG. 10 is an enlarged schematic view of the support device according to the sixth embodiment. In Embodiment 6 and Embodiments 7 and 8 described later, the use of a device using a dilatant fluid as a load transmission device (snubber) is greatly different from Embodiments 1 to 5 described above.

  The support device 7 according to the sixth embodiment includes a link mechanism 70 as a load direction disassembling means and a snubber 75 as a load transmission device.

  The link mechanism 70 includes two parts, a first link mechanism 71 and a second link mechanism 72.

The first link mechanism 71 includes a link 711 and a link 712. The link 711 is disposed on the steam generator SG side, and the link 712 is disposed on the fixing base WB side. The link 711 and the link 712 are connected by a joint 713 so as to be able to rotate with each other. The link 711 is connected so that the end 711a opposite to the joint 713 can rotate to the steam generator SG. The link 712 is connected so that an end 712a opposite to the joint 713 can rotate to the fixing base WB.
In this case, the link 711 and the link 712 are connected so that the first link mechanism 71 is bent in a mountain shape toward the upper side in the vertical direction.

The second link mechanism 72 includes a link 721 and a link 722. The link 721 is disposed on the steam generator SG side, and the link 722 is disposed on the fixing base WB side. The link 721 and the link 722 are connected to each other by a joint 723 so that they can rotate. The link 721 is connected so that the end 721a opposite to the joint 723 can rotate to the steam generator SG. The link 722 is connected so that an end 722a opposite to the joint 723 can be rotated to the fixing base WB.
In this case, the link 721 and the link 722 are connected so that the second link mechanism 72 is bent in a valley toward the lower side in the vertical direction.

The second link mechanism 72 is bent in a direction opposite to the direction in which the first link mechanism 71 is bent. That is, when the second link mechanism 72 is bent, the joint 723 moves in the direction opposite to the direction in which the joint 713 moves.
That is, when the steam generator SG approaches the fixing base WB and the first link mechanism 71 and the second link mechanism 72 are bent, the joint 713 of the first link mechanism 71 and the joint 723 of the second link mechanism 72 are They are arranged to move away from each other.

In FIG. 10, A is the first predetermined direction, B is the second predetermined direction, and the second predetermined direction B is perpendicular to the first predetermined direction A.
Then, assuming that the angle formed by the link 711 and the first predetermined direction A is θ and the angle formed by the link 721 and the first predetermined direction A is θ, the link mechanism 71 is set so that θ is an angle smaller than 45 degrees. , 72 are arranged. As a result, in the support device 7, the link mechanism 70 is arranged so that the force in the second predetermined direction B is smaller than the first predetermined direction A in the force received by the support device 7.

The snubber 75 as a load transmission device includes a first container 751, a second container 752, a conduit 753 that communicates the first container 751 and the second container 752, a first container 751, a second container 752, and a tube. And a dilatant fluid filled in the passage 753.
The first container 751 and the second container 752 are variable volume containers that contract when receiving a compressive force and expand when receiving a tensile force.
The dilatant fluid is an incompressible fluid in which the viscosity is small when the shear rate is low, but the viscosity increases rapidly when the shear rate is high. In other words, the dilatant fluid is a liquid that behaves solidly with rapid deformation and exhibits fluidity with respect to slow deformation.

One end 751 a of the first container 751 is rotatably connected to the first link mechanism 71. Specifically, one end 751 a of the first container 751 is rotatably connected to the joint 713 of the first link mechanism 71.
Further, the other end 751b of the first container 751 is connected to the fixed portion WBb1. The fixing part WBb1 is fixed to the fixing base WB via a member (not shown). As a result, the other end 751b of the first container 751 is fixed to the fixing base WB via the fixing portion WBb1.

In this way, the first container 751 is arranged so as to be able to expand and contract along the second predetermined direction B.
In this case, since the angle θ formed by the link 711 and the first predetermined direction A is arranged to be an angle smaller than 45 degrees, the force in the first predetermined direction A acts on the first link mechanism 71. Sometimes, the force that is decomposed in the second predetermined direction B and acts on the first container 751 is smaller than the force in the first predetermined direction A.

One end 752 a of the second container 752 is rotatably connected to the second link mechanism 72. Specifically, one end 752 a of the second container 752 is rotatably connected to the joint 723 of the second link mechanism 72.
The other end 752b of the second container 752 is connected to the fixed portion WBb2. The fixing portion WBb2 is fixed to the fixing base WB via a member (not shown). As a result, the other end 752b of the second container 752 is fixed to the fixing base WB via the fixing portion WBb2.

In this way, the second container 752 is arranged so as to be able to expand and contract along the second predetermined direction B.
In this case, since the angle θ formed by the link 721 and the first predetermined direction A is arranged to be smaller than 45 degrees, the force in the first predetermined direction A acts on the second link mechanism 72. Sometimes, the force that is decomposed in the second predetermined direction B and acts on the second container 752 is smaller than the force in the first predetermined direction A.

  When the steam generator SG approaches slowly toward the fixing base WB, the bending angle δ1 formed by the link 711 and the link 712 of the first link mechanism 71 becomes small, and a tensile force acts on the first container 751 and the first The first container 751 expands to increase its volume, the bending angle δ2 formed by the link 721 and the link 722 of the second link mechanism 72 decreases, the compressive force acts on the second container 752, and the second container 752 contracts. The volume becomes smaller. For this reason, the dilatant fluid in the second container 752 flows toward the first container 751 via the pipe line 753.

  On the contrary, when the steam generator SG is slowly separated from the fixing base WB, the bending angle δ1 formed by the link 711 and the link 712 of the first link mechanism 71 becomes large, and a compressive force acts on the first container 751. The first container 751 contracts to reduce the volume, the bending angle δ2 formed by the link 721 and the link 722 of the second link mechanism 72 increases, and a tensile force acts on the second container 752 so that the second container 752 expands. As a result, the volume increases. For this reason, the dilatant fluid in the first container 751 flows toward the second container 752 through the pipe line 753.

  If the position of the steam generator SG changes suddenly due to the occurrence of an earthquake or the like, and the force along the second predetermined direction B acts on the containers 751 and 752 via the link mechanisms 71 and 72, the dilatant Since the viscosity of the fluid rises rapidly, the expansion and contraction of the containers 751 and 752 is restricted. As a result, the movement of the steam generator SG in the first predetermined direction A can be effectively restricted.

  With the above configuration, the force component transmitted from the steam generator SG to the support device 7 is decomposed so that the force in the second predetermined direction B is smaller than the force in the first predetermined direction A. Thereby, the support device 7 can create a force in the second predetermined direction B. Therefore, the support device is such that the containers 751 and 752 of the snubber 75 are attached to extend and contract in the second predetermined direction B, rather than the containers 751 and 752 of the snubber 75 are attached to extend and contract in the first predetermined direction A. 7 can reduce the force received by the snubber 75. Thereby, the support apparatus 7 can reduce the load capacity required for the snubber 75. As a result, the support device 7 can suppress the snubber 75 from becoming large.

(Embodiment 7)
FIG. 11 is an enlarged schematic diagram illustrating the support device according to the seventh embodiment.
The support device 8 according to the seventh embodiment includes a link mechanism 80 as load direction decomposing means and a snubber 85 as a load transmission device.

The link mechanism 80 includes four links: a first link mechanism 81, a second link mechanism 82, a third link mechanism 83, and a fourth link mechanism 84.
In the present embodiment, the third link mechanism 83, the fourth link mechanism 84, the first link mechanism 81, and the second link mechanism 82 are sequentially arranged from the upper side to the lower side in the vertical direction.

The first link mechanism 81 includes a link 811 and a link 812. The link 811 is disposed on the steam generator SG side, and the link 812 is disposed on the fixing base WB side. The link 811 and the link 812 are connected by a joint 813 so as to be able to rotate with each other. The link 811 is connected so that the end 811a opposite to the joint 813 can rotate to the steam generator SG. The link 812 is connected so that the end 812a opposite to the joint 813 can be rotated to the fixing base WB.
In this case, the link 811 and the link 812 are connected so that the first link mechanism 81 is bent in a mountain shape toward the upper side in the vertical direction.

The second link mechanism 82 includes a link 821 and a link 822. The link 821 is disposed on the steam generator SG side, and the link 822 is disposed on the fixing base WB side. The link 821 and the link 822 are connected to each other by a joint 823 so as to be rotatable with respect to each other. The link 821 is connected so that an end 821a opposite to the joint 823 can rotate to the steam generator SG. The link 822 is connected so that the end 822a opposite to the joint 823 can rotate to the fixing base WB.
In this case, the link 821 and the link 822 are coupled so that the second link mechanism 82 bends in a valley toward the lower side in the vertical direction.

The second link mechanism 82 is bent in a direction opposite to the direction in which the first link mechanism 81 is bent. That is, when the second link mechanism 82 is bent, the joint 823 moves in a direction opposite to the direction in which the joint 813 moves.
That is, when the steam generator SG approaches the fixing base WB and the first link mechanism 81 and the second link mechanism 82 are bent, the joint 813 of the first link mechanism 81 and the joint 823 of the second link mechanism 82 are They are arranged to move away from each other.

The third link mechanism 83 includes a link 831 and a link 832. The link 831 is disposed on the steam generator SG side, and the link 832 is disposed on the fixing base WB side. The link 831 and the link 832 are connected by a joint 833 so as to be able to rotate with each other. The link 831 is connected so that the end portion 831a opposite to the joint 833 can rotate to the steam generator SG. The link 832 is connected so that the end portion 832a opposite to the joint 833 can rotate to the fixing base WB.
In this case, the link 831 and the link 832 are connected so that the third link mechanism 81 is bent in a valley toward the lower side in the vertical direction.

The fourth link mechanism 84 includes a link 841 and a link 842. The link 841 is disposed on the steam generator SG side, and the link 842 is disposed on the fixing base WB side. The link 841 and the link 842 are connected to each other by a joint 843 so as to be rotatable. The link 841 is connected so that the end 841a opposite to the joint 843 can be rotated to the steam generator SG. The link 842 is connected so that the end 842a opposite to the joint 843 can be rotated to the fixing base WB.
In this case, the link 841 and the link 842 are connected so that the fourth link mechanism 84 bends as a mountain toward the upper side in the vertical direction.

The fourth link mechanism 84 bends in the direction opposite to the direction in which the third link mechanism 83 bends. That is, when the fourth link mechanism 84 is bent, the joint 843 moves in the direction opposite to the direction in which the joint 833 moves.
That is, when the steam generator SG approaches the fixing base WB and the third link mechanism 83 and the fourth link mechanism 84 are bent, the joint 833 of the third link mechanism 83 and the joint 843 of the fourth link mechanism 84 are It arrange | positions so that it may move to the direction which mutually approaches.

In FIG. 11, A is the first predetermined direction, B is the second predetermined direction, and the second predetermined direction B is perpendicular to the first predetermined direction A.
The angle between the link 811 and the first predetermined direction A is θ, the angle between the link 821 and the first predetermined direction A is θ, the angle between the link 831 and the first predetermined direction A is θ, and the link 841 When the angle formed by the first predetermined direction A is θ, the link mechanisms 81, 82, 83, and 84 are arranged so that θ is an angle smaller than 45 degrees. As a result, in the support device 8, the link mechanism 80 is arranged so that the force in the second predetermined direction B is smaller than the first predetermined direction A in the force received by the support device 8.

The snubber 85 as a load transmission device includes a first container 851, a second container 852, a conduit 853 that communicates the first container 851 and the second container 852, a first container 851, a second container 852, and a tube. And a dilatant fluid filled in the channel 853.
The first container 851 and the second container 852 are variable volume containers that contract when receiving a compressive force and expand when receiving a tensile force.
In the present embodiment, the first container 851 is disposed between the first link mechanism 81 and the second link mechanism 82, and the second container 852 is disposed between the third link mechanism 83 and the fourth link mechanism 84. The

One end 851 a of the first container 851 is rotatably connected to the first link mechanism 81. Specifically, one end 851 a of the first container 851 is rotatably connected to the joint 813 of the first link mechanism 81.
The other end 851 b of the first container 851 is rotatably connected to the second link mechanism 82. Specifically, the other end 851 b of the first container 851 is rotatably connected to the joint 823 of the second link mechanism 82.

In this way, the first container 851 is arranged so that it can expand and contract along the second predetermined direction B.
In this case, since the angle θ formed by the links 811 and 821 and the first predetermined direction A is arranged to be an angle smaller than 45 degrees, the force in the first predetermined direction A is applied to the link mechanisms 81 and 82. When acting, the force that is decomposed in the second predetermined direction B and acts on the first container 851 is smaller than the force in the first predetermined direction A.

One end 852 a of the second container 852 is rotatably connected to the third link mechanism 83. Specifically, one end 852 a of the second container 852 is rotatably connected to the joint 833 of the third link mechanism 83.
The other end 852 b of the second container 852 is rotatably connected to the fourth link mechanism 84. Specifically, the other end 852 b of the second container 852 is rotatably connected to the joint 843 of the fourth link mechanism 84.

In this manner, the second container 852 is arranged so as to be able to expand and contract along the second predetermined direction B.
In this case, since the angle θ formed by the links 831 and 841 and the first predetermined direction A is arranged to be smaller than 45 degrees, the force in the first predetermined direction A is applied to the link mechanisms 83 and 84. When acting, the force that is decomposed in the second predetermined direction B and acts on the second container 852 is smaller than the force in the first predetermined direction A.

  When the steam generator SG slowly approaches the fixing base WB, the bending angle δ1 formed by the link 811 and the link 812 of the first link mechanism 81 becomes small, and the link 821 and the link 822 of the second link mechanism 82 And the joint 813 of the first link 81 and the joint 823 of the second link 82 are separated from each other, and a tensile force acts on the first container 851 to expand the first container 851. On the other hand, the bending angle δ3 formed by the link 831 and the link 832 of the third link mechanism 83 is increased, the bending angle δ4 formed by the link 841 and the link 842 of the fourth link mechanism 84 is increased, and the third The joint 833 of the link 83 and the joint 843 of the fourth link 84 approach and compress into the second container 852. There second container 852 acts squashed volume decreases. For this reason, the dilatant fluid in the second container 852 flows toward the first container 851 via the pipe 853.

  On the other hand, when the steam generator SG is slowly separated from the fixing base WB, the bending angle δ1 formed by the link 811 and the link 812 of the first link mechanism 81 is increased, and the link 821 and the link 822 of the second link mechanism 82 are increased. And the joint angle 813 of the first link 81 and the joint 823 of the second link 82 approach each other, and a compressive force acts on the first container 851 so that the first container 851 contracts and the volume is increased. On the other hand, the bending angle δ3 formed by the link 831 and the link 832 of the third link mechanism 83 is decreased, the bending angle δ4 formed by the link 841 and the link 842 of the fourth link mechanism 84 is decreased, and the third The joint 833 of the link 83 and the joint 843 of the fourth link 84 are separated from each other, and a tensile force is applied to the second container 852. The second vessel 852 acts volume increases to expand. For this reason, the dilatant fluid in the first container 851 flows toward the second container 852 side via the pipe line 853.

  When the position of the steam generator SG changes suddenly due to the occurrence of an earthquake or the like, and the force in the second predetermined direction B acts on the containers 851 and 852 via the link mechanisms 81, 82, 83, and 84. In this case, since the viscosity of the dilatant fluid increases rapidly, the expansion and contraction of the containers 851 and 852 is restricted. As a result, the movement of the steam generator SG in the first predetermined direction A can be effectively restricted.

  With the above configuration, the force component transmitted from the steam generator SG to the support device 8 is decomposed so that the force in the second predetermined direction B is smaller than the force in the first predetermined direction A. Thereby, the support device 8 can create a force in the second predetermined direction B. Therefore, the support device is such that the containers 851 and 852 of the snubber 85 are attached to expand and contract in the second predetermined direction B, rather than the containers 851 and 852 of the snubber 85 are attached to extend and contract in the first predetermined direction A. 8 can reduce the force received by the snubber 85. Thereby, the support apparatus 8 can reduce the load capacity required for the snubber 85. As a result, the support device 8 can suppress an increase in the size of the snubber 85.

(Embodiment 8)
FIG. 12 is an enlarged schematic diagram illustrating the support device according to the eighth embodiment.
The support device 9 of the eighth embodiment is configured to include a link mechanism 90 as load direction decomposing means and a snubber 95 as a load transmission device.

  The link mechanism 90 includes two parts, a first link mechanism 91 and a second link mechanism 92.

The first link mechanism 91 includes a link 911 and a link 912. The link 911 is disposed on the steam generator SG side, and the link 912 is disposed on the fixing base WB side. The link 911 and the link 912 are connected by a joint 913 so as to be able to rotate with each other. The link 911 is connected so that the end 911a opposite to the joint 913 can be rotated to the steam generator SG. The link 912 is connected so that the end 912a opposite to the joint 913 can rotate to the fixing base WB.
In this case, the link 911 and the link 912 are coupled so that the first link mechanism 91 is bent in a mountain shape toward the upper side in the vertical direction.

The second link mechanism 92 includes a link 921 and a link 922. The link 921 is disposed on the steam generator SG side, and the link 922 is disposed on the fixing base WB side. The link 921 and the link 922 are connected by a joint 923 so as to be able to rotate with each other. The link 921 is connected so that the end 921a opposite to the joint 923 can rotate to the steam generator SG. The link 922 is coupled so that the end 922a opposite to the joint 923 can rotate to the fixing base WB.
In this case, the link 921 and the link 922 are coupled so that the second link mechanism 92 is bent in a valley toward the lower side in the vertical direction.

The second link mechanism 92 bends in a direction opposite to the direction in which the first link mechanism 91 bends. That is, when the second link mechanism 92 is bent, the joint 923 moves in a direction opposite to the direction in which the joint 913 moves.
That is, when the steam generator SG approaches the fixing base WB and the first link mechanism 91 and the second link mechanism 92 are bent, the joint 913 of the first link mechanism 91 and the joint 923 of the second link mechanism 92 are mutually connected. It is arranged to move in the direction of leaving.

In FIG. 12, A is the first predetermined direction, B is the second predetermined direction, and the second predetermined direction B is perpendicular to the first predetermined direction A.
Then, if the angle formed by the link 911 and the first predetermined direction A is θ and the angle formed by the link 921 and the first predetermined direction A is θ, the link mechanism 91 is set so that θ is an angle smaller than 45 degrees. , 92 are arranged. As a result, in the support device 9, the link mechanism 90 is arranged so that the force in the second predetermined direction B is smaller than the first predetermined direction A in the force received by the support device 9.

A snubber 95 as a load transmission device includes a first container 951, a second container 952, a conduit 953 communicating the first container 951 and the second container 952, a first container 951, a second container 952, and a tube. And a dilatant fluid filled in the passage 953.
The first container 951 and the second container 952 are variable volume containers that contract when receiving a compressive force and expand when receiving a tensile force.

One end 951 a of the first container 951 is rotatably connected to the first link mechanism 91. Specifically, one end 951 a of the first container 951 is rotatably connected to the joint 913 of the first link mechanism 91.
Further, the other end 951 b of the first container 951 is rotatably connected to the second link mechanism 92. Specifically, the other end 951 b of the first container 951 is rotatably connected to the joint 923 of the second link mechanism 92.

Thus, the 1st container 951 is arrange | positioned so that it can expand-contract along the 2nd predetermined direction B. FIG.
In this case, since the angle θ formed by the link 911 and the first predetermined direction A and the angle θ formed by the link 921 and the first predetermined direction A are arranged to be an angle smaller than 45 degrees, the link mechanism When a force in the first predetermined direction A acts on 91 and 92, the force that is decomposed in the second predetermined direction B and acts on the first container 951 is smaller than the force in the first predetermined direction A.

One end 952 a of the second container 952 is rotatably connected to the second link mechanism 92. Specifically, one end 952 a of the second container 952 is rotatably connected to the joint 923 of the second link mechanism 92.
The other end 952b of the second container 952 is connected to the fixed portion WBb2. The fixing portion WBb2 is fixed to the fixing base WB via a member (not shown). As a result, the other end 952b of the second container 952 is fixed to the fixing base WB via the fixing portion WBb2.

In this way, the second container 952 is arranged so that it can expand and contract along the second predetermined direction B.
In this case, since the angle θ formed by the link 921 and the first predetermined direction A is arranged to be smaller than 45 degrees, a force in the first predetermined direction A acts on the second link mechanism 92. Sometimes, the force that is decomposed in the second predetermined direction B and acts on the second container 952 is smaller than the force in the first predetermined direction A.

  When the steam generator SG slowly approaches the fixing base WB, the bending angle δ1 formed by the link 911 and the link 912 of the first link mechanism 91 is reduced, and the link 921 and the link 922 of the second link mechanism 92 are reduced. As a result, the bending angle δ2 formed between the first container 951 and the first container 951 expands to increase the volume. In addition, the bending angle δ2 formed by the link 921 and the link 922 of the second link mechanism 92 is reduced, the compressive force is applied to the second container 952, and the second container 952 is contracted to reduce the volume. For this reason, the dilatant fluid in the second container 952 flows toward the first container 951 through the pipe 953.

  On the other hand, when the steam generator SG is slowly separated from the fixing base WB, the bending angle δ1 formed by the link 911 and the link 912 of the first link mechanism 91 is increased, and the link 921 and the link of the second link mechanism 92 are linked. The bending angle δ2 formed between the first container 922 and the second container 922 is increased, a compressive force is applied to the first container 951, and the first container 951 contracts to reduce the volume. Further, the bending angle δ2 formed by the link 921 and the link 922 of the second link mechanism 92 increases, and a tensile force acts on the second container 952 to expand the second container 952 and increase its volume. For this reason, the dilatant fluid in the first container 951 flows toward the second container 952 through the pipe 953.

  If the position of the steam generator SG changes suddenly due to the occurrence of an earthquake or the like and a force along the second predetermined direction B acts on the containers 951 and 952 via the link mechanisms 91 and 92, the dilatant Since the viscosity of the fluid rises rapidly, the expansion and contraction of the containers 951 and 952 is restricted. As a result, the movement of the steam generator SG in the first predetermined direction A can be effectively restricted.

  With the configuration described above, the force component transmitted from the steam generator SG to the support device 9 is decomposed so that the force in the second predetermined direction B is smaller than the force in the first predetermined direction A. Thereby, the support device 9 can generate a force in the second predetermined direction B. Therefore, the support device is such that the containers 951 and 952 of the snubber 95 are attached to extend and contract in the second predetermined direction B, rather than the containers 951 and 952 of the snubber 95 are attached to extend and contract in the first predetermined direction A. 9 can reduce the force received by the snubber 95. Thereby, the support device 9 can reduce the load capacity required for the snubber 95. As a result, the support device 9 can suppress an increase in the size of the snubber 95.

  As described above, the equipment support device for a nuclear power plant according to the present invention is useful for a technology for supporting equipment used in a nuclear power plant, and is particularly suitable for suppressing an increase in the size of a load transmission device. .

1, 2, 3, 4, 5, 6, 7, 8, 9 Support device 11 Rotating legs 12, 22, 30, 50, 70, 80, 90 Link mechanism 121, 221 First link 122, 222 Second link 13, 23 Joint 14, 24, 35, 55, 75, 85, 95 Snubber 31, 51 Upper link mechanism 311, 511 Upper first link 312, 512 Upper second link 32, 52 Second link mechanism 321, 521 Second Link 322, 522 Second link 33, 53 Upper joint 34, 54 Second joint 41 Contact member 42 Spring 61 Mounting portion A First predetermined direction B, C Second predetermined direction PA piping RCP pump RV Reactor pressure vessel SG Steam generation WB fixing base WBb1, WBb2 fixing part

Claims (9)

A nuclear power plant equipment support device that regulates the movement of the nuclear power plant equipment in a first predetermined direction,
It is arranged between the nuclear power plant equipment and the fixing foundation, receives a force from the nuclear power plant equipment, and is a force smaller than the force in the first predetermined direction, the first predetermined power Load direction decomposition means for generating a force in a second predetermined direction having an angle in the direction;
Even if the magnitude of the input force is the same, the resistance force generated increases as the speed at which the force is input increases, and the device receives the force in the second predetermined direction from the load direction decomposing means. A load transmission device capable of expanding and contracting in a second predetermined direction;
An equipment support device for a nuclear power plant, comprising: The load direction decomposition means includes
Of the nuclear power plant equipment and the fixing foundation, a first link arranged on the nuclear power plant equipment side and a second link attached to the fixing foundation can rotate with each other. The apparatus support device for a nuclear power plant according to claim 1, wherein the link mechanism is connected in this manner.   3. The equipment support device for a nuclear power plant according to claim 2, wherein one end portion of the load transmission device is attached to the link mechanism, and the other end portion is attached to the fixing base. The link mechanism includes a first link mechanism and a second link mechanism that are bent in directions opposite to each other.
3. The nuclear power plant apparatus according to claim 2, wherein one end of the load transmission device is connected to the first link mechanism, and the other end is connected to the second link mechanism. 4. Support device.   The nuclear power plant equipment support device according to any one of claims 2 to 4, wherein the link mechanism is coupled to the nuclear power plant equipment. The link mechanism is provided in contact with the nuclear power plant equipment,
The nuclear power plant equipment support device includes a pressing force generation unit that presses a portion of the link mechanism that opposes the nuclear power plant equipment to the nuclear power plant equipment. The apparatus support apparatus for nuclear power plants as described in any one of Claims 2-4. The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment and a link attached to the fixing foundation, the second link mechanism connected so as to be rotatable by a joint;
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container is connected to the first link mechanism in a state of receiving a tensile force when the first link mechanism is bent, and the second container is subjected to a compressive force when the second link mechanism is bent. The equipment support device for a nuclear power plant according to claim 1, wherein the equipment support device is connected to the second link mechanism. The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A second link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A third link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment, and a link attached to the fixing base, and a fourth link mechanism coupled so as to be rotatable by a joint;
When the first link mechanism and the second link mechanism are bent, the joints of the two are moved so as to move away from each other, and when the third link mechanism and the fourth link mechanism are bent, the joints of the two are mutually connected. It is arranged to move in the approaching direction,
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container has one end connected to the first link mechanism and the other end connected to the second link mechanism, and the second container has one end connected to the third link mechanism and the other end connected to the second link mechanism. The equipment support device for a nuclear power plant according to claim 1, wherein the equipment support device is connected to a fourth link mechanism. The load direction decomposition means includes
A first link mechanism in which a link attached to the nuclear power plant equipment and a link attached to the fixing base are coupled so as to be rotatable by a joint;
A link attached to the nuclear power plant equipment and a link attached to the fixing foundation, the second link mechanism connected so as to be rotatable by a joint;
The first link mechanism and the second link mechanism are arranged so that both joints move in a direction away from each other when bent.
The load transmitting means is
The first container and the second container of variable volume that contract when receiving a compressive force and expand when the tensile force is received, the conduit that communicates the first container and the second container, the first container, and the second container Having a dilatant fluid filled in the vessel and the conduit;
The first container has one end connected to the first link mechanism and the other end connected to the second link mechanism, and the second container has one end connected to the second link mechanism and the other end connected to the second link mechanism. The equipment support device for a nuclear power plant according to claim 1, wherein the equipment support device is connected to a fixing base.

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