Method and device for determining structural deformation of control rod drive mechanism installation channel

文档序号：1848203 发布日期：2021-11-16 浏览：21次中文

阅读说明：本技术 控制棒驱动机构安装通道的结构变形确定方法及确定装置 (Method and device for determining structural deformation of control rod drive mechanism installation channel ) 是由郑富磊靳峰雷夏凡王明政陈树明杨孔雳刘强于团结高付海高岳于 2021-07-07 设计创作，主要内容包括：本申请是关于一种控制棒驱动机构安装通道的结构变形确定方法、控制棒驱动机构安装通道的结构变形确定装置、终端及存储介质。该控制棒驱动机构安装通道的结构变形确定方法通过选择支撑筒顶面、动导管顶面、组件上表面、组件下表面,这四个机构连接时的活动连接点位作为确定位,确定安装通道内支撑筒、动导管以及组件相邻机构间的间距以及各机构相对于通道中心轴线的偏移量,来确定出用于表征变形后结构形态的第一夹角和第二夹角,从而通过结构变形后的所述支撑筒与所述动导管间的第一夹角和结构变形后的所述动导管与所述组件的第二夹角,得到最终变形后通道结构整体准确的结构形态。(The application relates to a structural deformation determining method of a control rod drive mechanism mounting channel, a structural deformation determining device of the control rod drive mechanism mounting channel, a terminal and a storage medium. According to the structural deformation determining method of the control rod driving mechanism installation channel, the top surface of the supporting cylinder, the top surface of the movable guide pipe, the upper surface of the component and the lower surface of the component are selected, the movable connection point positions when the four mechanisms are connected are used as determining positions, the distance between the supporting cylinder, the movable guide pipe and the adjacent mechanisms of the component in the installation channel and the offset of each mechanism relative to the central axis of the channel are determined, and a first included angle and a second included angle used for representing the structural form after deformation are determined, so that the overall accurate structural form of the channel structure after final deformation is obtained through the first included angle between the supporting cylinder and the movable guide pipe after structural deformation and the second included angle between the movable guide pipe and the component after structural deformation.)

1. A method of determining structural distortion of a control rod drive mechanism mounting channel, the method comprising:

determining a first distance between the top surface of the support cylinder and the top surface of the movable guide pipe in the first direction, a second distance between the movable guide pipe and the upper surface of the component in the first direction and a third distance between the upper surface of the component and the lower surface of the component in the first direction;

determining a first offset of the top surface of the support cylinder relative to the central axis of the channel in the second direction, a second offset of the top surface of the movable guide tube relative to the central axis of the channel in the second direction, a third offset of the upper surface of the component relative to the central axis of the channel in the second direction, and a fourth offset of the lower surface of the component relative to the central axis of the channel in the second direction;

obtaining a first included angle between the support cylinder and the movable guide pipe after the installation channel structure is deformed based on the first distance, the first offset, the second distance, the second offset and the third offset;

obtaining a second included angle between the movable guide pipe and the component after the installation channel structure is deformed based on the second distance, the second offset, the third distance, the third offset and the fourth offset; and the mounting channel is internally provided with a supporting cylinder, a movable guide pipe and an assembly which are connected with each other in sequence between the top surface of the supporting cylinder and the lower surface of the assembly along the central axis of the channel.

2. The structural deformation determination method of claim 1, wherein determining a first offset of the top surface of the support cylinder in a second direction relative to the central axis of the channel comprises:

determining an offset of a top surface of the support cartridge in a second direction relative to a central axis of the channel created when the support cartridge is installed in the channel;

determining the offset of the top surface of the support cylinder relative to the central axis of the channel in a second direction caused by the thermal deformation of the plug in the support cylinder; and the offset of the top surface of the supporting cylinder relative to the central axis of the channel in the second direction is formed by the expansion of the grid plate header connected with the lower surface of the component under heating;

determining an offset of a top surface of the support cylinder in a second direction relative to a central axis of the passageway caused by rotation of the support cylinder along a cylinder axis of the support cylinder caused by uneven heating of a main vessel used to mount the passageway;

the first offset is obtained based on the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is generated when the support cylinder is installed in the passage, the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is generated when the plug in the support cylinder is thermally deformed, the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is generated when the grid plate header connected with the lower surface of the component is thermally expanded, and the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is generated when the support cylinder rotates along the cylinder shaft of the support cylinder.

3. The structural deformation determination method of claim 1 wherein determining a second offset of the top surface of the flow conduit in a second direction relative to the central axis of the passageway comprises:

determining an offset of a top surface of the motive conduit in a second direction relative to a central axis of the passageway that results when the motive conduit is installed in the passageway;

determining the offset of the top surface of the movable guide pipe in the second direction relative to the central axis of the channel caused by the thermal deformation of the plug in the support cylinder and the offset of the top surface of the movable guide pipe in the second direction relative to the central axis of the channel caused by the thermal expansion of a grid plate header connected with the lower surface of the component;

determining an offset of the top surface of the movable guide pipe relative to the central axis of the channel caused by rotation of the support cylinder along the cylinder axis of the support cylinder, wherein the rotation of the support cylinder along the cylinder axis of the support cylinder is caused by uneven heating of a main container for installing the channel;

the second offset is obtained based on the offset of the top surface of the movable guide pipe relative to the central axis of the channel in the second direction, which is generated when the movable guide pipe is installed in the channel, the offset of the top surface of the movable guide pipe relative to the central axis of the channel, which is generated when the plug in the supporting cylinder is thermally deformed, the offset of the top surface of the movable guide pipe relative to the central axis of the channel, which is generated when the grid plate header connected with the lower surface of the component is thermally expanded, and the offset of the top surface of the movable guide pipe relative to the central axis of the channel, which is generated when the supporting cylinder rotates along the cylinder shaft of the supporting cylinder.

4. The structural deformation determination method of claim 1 wherein determining a third offset of the upper surface of the component in the second direction relative to the central axis of the channel comprises:

determining an offset of an upper surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

determining the offset of the upper surface of the assembly in a second direction relative to the central axis of the channel caused by the thermal expansion of the header of the grid plate connected to the lower surface of the assembly;

determining an offset in a second direction relative to the central axis of the passageway created by bending of the assembly under temperature and irradiation;

the third offset is derived based on an offset of the upper surface of the module relative to the central axis of the passageway in the second direction resulting from installation of the module in the passageway, an offset of the upper surface of the module relative to the central axis of the passageway resulting from thermal expansion of a header attached to the lower surface of the module, and an offset of the upper surface of the module relative to the central axis of the passageway resulting from bending of the module under temperature and radiation.

5. The structural deformation determination method of claim 1 wherein determining a fourth offset of the lower surface of the component in the second direction relative to the central axis of the channel comprises:

determining an offset of a lower surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

determining the offset of the lower surface of the component in a second direction relative to the central axis of the channel caused by the thermal expansion of the header of the grid plate connected to the lower surface of the component;

the fourth offset is obtained based on an offset of the lower surface of the component in the second direction relative to the central axis of the passage, which is generated when the component is installed in the passage, and an offset of the lower surface of the component in the second direction relative to the central axis of the passage, which is generated due to the expansion of the grid plate header connected to the lower surface of the component caused by heat.

6. The method for determining structural deformation according to claim 1, wherein obtaining a first included angle between the support cylinder and the movable guide pipe after the mounting channel structure is deformed based on the first distance, the first offset amount, the second distance, the second offset amount, and the third offset amount comprises:

obtaining an included angle between the support cylinder and the projection of the support cylinder in the second direction after the installation channel structure is deformed based on the first distance, the first offset and the second offset;

obtaining an included angle between the movable guide pipe and the movable guide pipe projected in the second direction after the installation channel structure is deformed based on the second distance, the second offset and the third offset;

and obtaining the first included angle based on the included angle between the supporting cylinder and the projection and the included angle between the movable guide pipe and the projection.

7. The method for determining structural deformation according to claim 1, wherein obtaining a second included angle between the movable guide pipe and the component after the structural deformation of the installation channel based on the second distance, the second offset, the third distance, the third offset and the fourth offset comprises:

obtaining an included angle between the assembly and the projection of the assembly in the second direction after the installation channel structure is deformed based on the third distance, the third offset and the fourth offset;

and obtaining the second included angle based on the included angle between the movable guide pipe and the projection and the included angle between the component and the projection.

8. A structural distortion determination apparatus for a crdm mounting channel, the apparatus comprising:

the first processing unit is used for determining a first distance between the top surface of the support cylinder and the top surface of the movable guide pipe in the first direction, a second distance between the movable guide pipe and the upper surface of the component in the first direction and a third distance between the upper surface of the component and the lower surface of the component in the first direction;

a second processing unit for determining a first offset of the top surface of the support cylinder relative to the central axis of the passage in a second direction, a second offset of the top surface of the movable guide tube relative to the central axis of the passage in the second direction, a third offset of the upper surface of the component relative to the central axis of the passage in the second direction, and a fourth offset of the lower surface of the component relative to the central axis of the passage in the second direction;

the third processing unit is used for obtaining a first included angle between the support cylinder and the movable guide pipe after the installation channel structure is deformed based on the first distance, the first offset, the second distance, the second offset and the third offset;

the fourth processing unit is used for obtaining a second included angle between the movable guide pipe and the component after the installation channel structure is deformed based on the second distance, the second offset, the third distance, the third offset and the fourth offset; and the mounting channel is internally provided with a supporting cylinder, a movable guide pipe and an assembly which are connected with each other in sequence between the top surface of the supporting cylinder and the lower surface of the assembly along the central axis of the channel.

9. A terminal, comprising: a processor and a memory for storing a computer program operable on the processor, wherein the processor is operable to perform the steps of the method of any of claims 1 to 7 when the computer program is executed.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.

Technical Field

The invention relates to the technical field of nuclear power, in particular to a structural deformation determining method of a control rod drive mechanism installation channel, a structural deformation determining device of the control rod drive mechanism installation channel, a terminal and a storage medium.

Background

Disclosure of Invention

In view of the above, it is desirable to provide a structural deformation determining method of a crdm mounting channel, a crdm mounting channel structural deformation determining apparatus, a terminal, and a storage medium.

The technical scheme of the application is realized as follows:

in one aspect, the present application provides a method of determining structural distortion of a crdm mounting channel.

The method for determining the structural deformation of the control rod drive mechanism installation channel provided by the embodiment of the application comprises the following steps:

Based on the above scheme, the determining a first offset of the top surface of the support cylinder in the second direction relative to the central axis of the channel includes:

determining an offset of a top surface of the support cartridge in a second direction relative to a central axis of the channel created when the support cartridge is installed in the channel;

Based on the above scheme, the determining a second offset of the top surface of the movable conduit in a second direction relative to the central axis of the passage includes:

determining an offset of a top surface of the motive conduit in a second direction relative to a central axis of the passageway that results when the motive conduit is installed in the passageway;

Based on the above, the determining a third offset of the upper surface of the component in the second direction with respect to the central axis of the passage includes:

determining an offset of an upper surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

determining an offset in a second direction relative to the central axis of the passageway created by bending of the assembly under temperature and irradiation;

Based on the above, the determining the fourth offset of the lower surface of the component in the second direction with respect to the central axis of the channel includes:

determining an offset of a lower surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

Based on in above-mentioned scheme, based on first interval, first offset, the second interval, the second offset and the third offset, obtain after the installation passageway structure warp support a section of thick bamboo with move the first contained angle between the pipe, include:

and obtaining the first included angle based on the included angle between the supporting cylinder and the projection and the included angle between the movable guide pipe and the projection.

Based on the above scheme, obtaining a second included angle between the movable guide pipe and the component after the deformation of the installation channel structure based on the second distance, the second offset, the third distance, the third offset and the fourth offset includes:

and obtaining the second included angle based on the included angle between the movable guide pipe and the projection and the included angle between the component and the projection.

In another aspect, the present application provides a structural distortion determining apparatus of a crdm mounting channel, the apparatus comprising:

In another aspect, the present application further provides a terminal.

The terminal provided by the embodiment of the application comprises: a processor and a memory for storing a computer program operable on the processor, wherein the processor is configured to execute the steps of the method for determining structural distortion of a crdm mounting channel provided by an embodiment of the present application in one aspect when the computer program is executed.

In yet another aspect, the present application further provides a computer-readable storage medium.

A computer-readable storage medium provided by an embodiment of the present application has a computer program stored thereon, which, when executed by a processor, implements the steps of a method for determining structural deformation of a crdm mounting channel provided by an embodiment of the present application.

According to the structural deformation determining method of the control rod driving mechanism installation channel, the first included angle and the second included angle used for representing the structural form after deformation are determined by determining the distance between the support cylinder, the movable guide pipe and the adjacent mechanism of the assembly in the installation channel and the offset of each mechanism relative to the central axis of the channel, so that the structural deformation is carried out, the support cylinder and the first included angle between the movable guide pipes and the second included angle of the assembly after the structural deformation are carried out, and the overall structural form of the channel structure after the final deformation is obtained. According to the method, the top surface of the supporting cylinder, the top surface of the movable guide pipe, the upper surface of the component and the lower surface of the component are selected in a specific determination method, and movable connection point positions of the four mechanisms during connection are used as determination positions, so that the distance and offset between the mechanisms can be effectively and accurately determined, and the accurate structural form after deformation can be obtained.

Drawings

FIG. 1 is a flow chart of a method of determining structural distortion of a control rod drive mechanism mounting channel in accordance with one illustrative embodiment;

FIG. 2 is a schematic structural view of a CRDM mounting channel shown in accordance with an exemplary embodiment;

FIG. 3 is a schematic illustration of the structural state of a control rod drive mechanism mounting channel in a theoretical case, according to an exemplary embodiment;

FIG. 4 is a schematic illustration of a structural condition of a control rod drive mechanism mounting channel in the presence of a mounting error condition, according to an exemplary embodiment;

FIG. 5 is a schematic illustration of the structural state of the control rod drive mechanism mounting channel with thermal expansion of the grid header and thermal deformation of the tap, shown in accordance with an exemplary embodiment;

FIG. 6 is a schematic illustration of the structural state of the CRDM mounting channel in the presence of thermally differential axial expansion of the main vessel, in accordance with an exemplary embodiment;

FIG. 7 is a schematic illustration of the structural state of a CRDM mounting channel in the presence of temperature, radiation, etc., according to an exemplary embodiment;

FIG. 8 is a schematic illustration of the structural state of a control rod drive mechanism mounting channel under the influence of various combination factors, according to an exemplary embodiment;

FIG. 9 is a schematic illustration of a structural distortion determining apparatus for a control rod drive mechanism mounting channel, according to an exemplary embodiment.

Fig. 10 is a diagram illustrating a terminal structure according to an example embodiment.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the drawings and the specific embodiments of the specification. Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The control rod driving mechanism is one of core devices related to the operation safety of a nuclear reactor, is used for driving control rods, and plays roles in emergency shutdown and power compensation and power regulation. The control rod drive mechanism is mounted in a dedicated mounting channel comprised of several barrel-like members. Installation channels during manufacturing, installation and temperature rise of equipment such as a cock in a reactor, the radial thermal expansion of a small grid plate header, installation errors and bending deformation of a control rod assembly, manufacturing and installation errors of a cock supporting cylinder, thermal deformation of the cock, uneven axial expansion of a main container and the like cause the deflection, bending and rotation of dozens of installation channels on the cock respectively. The factors influencing the structural deformation of the installation channel of the control rod driving mechanism are more, and the mechanism is complex. Given that mounting channel distortion adversely affects rapid rod drop in a control rod drive mechanism, it is necessary to determine the structural distortion of the mounting channel.

The application provides a structural deformation determination method for a control rod drive mechanism installation channel, which is applied to the control rod drive mechanism installation channel. FIG. 1 is a first method flow diagram illustrating a method of determining structural distortion of a control rod drive mechanism mounting channel in accordance with an exemplary embodiment. As shown in fig. 1, the method for determining structural deformation of a crdm mounting channel includes:

step 10, determining a first distance between the top surface of the support cylinder and the top surface of the movable guide pipe in the first direction, a second distance between the movable guide pipe and the upper surface of the component in the first direction and a third distance between the upper surface of the component and the lower surface of the component in the first direction;

step 11, determining a first offset of the top surface of the support cylinder relative to the central axis of the channel in a second direction, a second offset of the top surface of the movable guide pipe relative to the central axis of the channel in the second direction, a third offset of the upper surface of the component relative to the central axis of the channel in the second direction and a fourth offset of the lower surface of the component relative to the central axis of the channel in the second direction;

step 12, obtaining a first included angle between the support cylinder and the movable guide pipe after the installation channel structure is deformed based on the first distance, the first offset, the second distance, the second offset and the third offset;

step 13, obtaining a second included angle between the movable guide pipe and the component after the installation channel structure is deformed based on the second distance, the second offset, the third distance, the third offset and the fourth offset; and the mounting channel is internally provided with a supporting cylinder, a movable guide pipe and an assembly which are connected with each other in sequence between the top surface of the supporting cylinder and the lower surface of the assembly along the central axis of the channel.

In the present exemplary embodiment, the first direction is a direction along the passage center axis, and the second direction is a direction perpendicular to the first direction.

FIG. 2 is a schematic diagram of a configuration of a CRDM mounting channel shown in accordance with an exemplary embodiment.

FIG. 3 is a schematic illustration of the structural state of the control rod drive mechanism mounting channels in a theoretical case, according to an exemplary embodiment.

As shown in fig. 2, a grid plate header 1, a component 7, a movable conduit 4 and a support cylinder 5 which are connected in sequence are arranged in the installation channel. The grid plate header 1 is contacted with the lower surface of the component 7, the upper surface of the component 7 is contacted with the movable guide pipe 4, and the movable guide pipe 4 is connected with the supporting cylinder 5. Wherein the assembly 7 is composed of a control rod outer thimble 2 and an assembly moving body 3. The control rod drive mechanism 6 is mounted within the support cylinder 5 and is consolidated at the top surface of the support cylinder 5. The lower part of the component outer sleeve 2 is arranged in the small grid plate header seat 1, and the two are fixedly connected. The support cylinder 5 is flexibly connected with the movable conduit 4 at the top surface of the movable conduit 4. The movable conduit 4 is flexibly connected with the outer sleeve 2 of the component at the top surface of the component. The control rod drive mechanism 6 is affixed to the module moving body 3 at the top surface of the module. The module moving body 3 is movable up and down reciprocally within a certain stroke range by the control rod drive mechanism 6.

In an ideal situation, the small grid plate header 1, the assembly outer sleeve 2, the assembly moving body 3, the moving guide tube 4, the support cylinder 5, the control rod drive mechanism 6 and other devices and components in FIG. 2 are coaxial as shown in FIG. 3. However, in the manufacturing, installation and temperature rise of equipment such as a support tube inner faucet in a reactor, the radial thermal expansion of a grid plate header, the installation error and bending deformation of a control rod assembly, the manufacturing and installation error of a support tube, the thermal deformation of the faucet, the axial expansion unevenness of a main container and other factors can cause the installation channel to shift, bend and rotate, which has adverse effects on the quick rod falling performance of a control rod driving mechanism. The structural deformation determining method of the control rod driving mechanism installation channel can be applied to the control rod driving mechanism installation channel to determine the structural deformation condition of the installation channel. And taking the determined structural deformation condition of the channel as the actual structural deformation of the actually required installation channel to determine whether the installation channel meets the installation index requirements of the control rod driving mechanism, such as rod drop time and the like.

According to the structural deformation determining method of the control rod driving mechanism installation channel, the first included angle and the second included angle used for representing the structural form after deformation are determined by determining the distance between the support cylinder, the movable guide pipe and the adjacent mechanism of the assembly in the installation channel and the offset of each mechanism relative to the central axis of the channel, so that the structural deformation is carried out, the support cylinder and the first included angle between the movable guide pipes and the second included angle of the assembly after the structural deformation are carried out, and the overall structural form of the channel structure after the final deformation is obtained. According to the method, the top surface of the supporting cylinder, the top surface of the movable guide pipe, the upper surface of the assembly and the lower surface of the assembly are selected in a specific determination method, the movable connection point positions of the four mechanisms during connection are used as determination positions, the effective and accurate determination of the distance and the offset between the mechanisms is facilitated, the accurate structural form after deformation is obtained, the structural deformation condition of the determined channel is used as the actual structural deformation of the specific and actual installation channel, and whether the installation channel can meet the installation index requirements of control rod driving mechanism such as rod falling time and the like is determined.

In some embodiments, the method of determining structural distortion of a crdm mounting channel further comprises: and determining the rod falling time of the control rod driving structure in the installation channel based on the first included angle and the second included angle.

In the present exemplary embodiment, the mounting channel is determined to be capable of meeting the rod drop time requirement of the control rod drive mechanism when the first included angle is less than or equal to a first threshold value and the second included angle is less than or equal to a second threshold value. The first threshold value and the second threshold value are both angle values which limit the deformation degree when the installation channel structure is deformed.

In the present exemplary embodiment, the mounting channel is determined not to satisfy the drop time requirement of the control rod drive mechanism when the first included angle is greater than a first threshold value and/or the second included angle is greater than a second threshold value.

In some embodiments, the determining a first offset of the support cylinder top surface in a second direction relative to the channel central axis comprises:

determining an offset of a top surface of the support cartridge in a second direction relative to a central axis of the channel created when the support cartridge is installed in the channel;

In the present exemplary embodiment, the factors affecting the first offset of the top surface of the support cylinder in the second direction with respect to the central axis of the passage include at least: the installation error of the support cylinder in the channel, the influence of thermal deformation of a plug in the support cylinder and thermal expansion of a grid plate header connected with the lower surface of the component on offset, the rotation of the support cylinder along the cylinder shaft of the support cylinder caused by nonuniform heating of the main container and the like.

Therefore, when determining the first offset of the top surface of the support cylinder relative to the central axis of the passage in the second direction, it is necessary to determine the offset of the top surface of the support cylinder relative to the central axis of the passage in the second direction generated when the support cylinder is installed in the passage, the offset of the top surface of the support cylinder relative to the central axis of the passage in the second direction generated by the thermal deformation of the plug in the support cylinder, the offset of the top surface of the support cylinder relative to the central axis of the passage in the second direction generated by the thermal expansion of the grid plate header connected to the lower surface of the assembly, and the offset of the top surface of the support cylinder relative to the central axis of the passage in the second direction generated by the rotation of the support cylinder along the cylinder axis of the support cylinder. Therefore, the accurate offset of the top surface of the support cylinder relative to the central axis of the channel in the second direction is determined by comprehensively considering all the influencing factors.

When the first offset of the top surface of the support cylinder relative to the central axis of the channel in the second direction is determined by integrating all the influence factors, the offset caused by all the determined influence factors can be accumulated to determine the final offset. For example, the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is caused by the thermal deformation of the plug in the support cylinder and the thermal expansion of the baffle plate header connected to the lower surface of the assembly, which are caused by the installation of the support cylinder in the passage, and the offset of the top surface of the support cylinder in the second direction relative to the central axis of the passage, which is caused by the rotation of the support cylinder along the cylinder axis of the support cylinder, are added.

FIG. 4 is a schematic illustration of the structural condition of the control rod drive mechanism mounting channel in the presence of a mounting error condition, according to an exemplary embodiment.

FIG. 5 is a schematic diagram illustrating the structural state of the control rod drive mechanism mounting channel with thermal expansion of the grid header and thermal deformation of the tap, according to an exemplary embodiment.

FIG. 6 is a schematic diagram illustrating the structural state of the CRDM mounting channel in the presence of thermally differential axial expansion of the main vessel, according to an exemplary embodiment.

FIG. 7 is a schematic diagram illustrating the structural state of a CRDM mounting channel in the presence of temperature, radiation, etc., according to an exemplary embodiment.

FIG. 8 is a schematic illustration of the structural state of the control rod drive mechanism mounting channel under the influence of various combined factors, according to an exemplary embodiment.

As shown in fig. 4, when there is an installation error in installing the mechanism in the channel, under the influence of the overall installation error, an offset Γ 1 in the second direction of the top surface of the support cylinder with respect to the central axis of the channel, which may occur when the support cylinder is installed in the channel; as shown in fig. 5, on the basis of fig. 4, the offset Γ 2 formed by the top surface of the support cylinder relative to the central axis of the passage in the second direction is caused by the thermal expansion of the grid plate header and the thermal deformation of the plug in the support cylinder in the thermal deformation state of the plug, and the thermal expansion of the grid plate header connected with the lower surface of the assembly; as shown in fig. 6, an offset Γ 3 formed by the top surface of the support cylinder in the second direction with respect to the central axis of the passage due to the rotation of the support cylinder along the cylinder axis of the support cylinder is superimposed on the basis of fig. 5, resulting in a first offset δ 1 of the top surface of the support cylinder in the second direction with respect to the central axis of the passage as shown in fig. 8. That is, δ 1 ═ Γ 1+ Γ 3- Γ 2.

In some embodiments, said determining a second offset of the top surface of the motive conduit relative to the central axis of the passageway in a second direction comprises:

determining an offset of a top surface of the motive conduit in a second direction relative to a central axis of the passageway that results when the motive conduit is installed in the passageway;

In the present exemplary embodiment, the factors that influence the second offset of the top surface of the motive passageway with respect to the central axis of the passageway in the second direction include at least: the movable guide pipe is driven to rotate along the cylinder shaft of the support cylinder due to the installation error of the movable guide pipe in the channel, the influence of thermal deformation of a plug in the support cylinder and thermal expansion of a grid plate header connected with the lower surface of the component on offset, nonuniform heating of the main container, and the like. Therefore, when determining the second offset of the top surface of the movable conduit relative to the central axis of the passage in the second direction, it is necessary to determine the offset of the top surface of the movable conduit relative to the central axis of the passage in the second direction, which is generated when the movable conduit is installed in the passage, the offset of the top surface of the movable conduit relative to the central axis of the passage caused by the thermal deformation of the plug in the support cylinder, the offset of the top surface of the movable conduit relative to the central axis of the passage caused by the thermal expansion of the grid plate header connected to the lower surface of the module, and the offset of the top surface of the support cylinder relative to the central axis of the passage caused by the rotation of the movable conduit along the cylinder axis of the support cylinder. Therefore, the accurate offset of the top surface of the movable guide pipe relative to the central axis of the channel in the second direction is determined by comprehensively considering all the influencing factors.

As shown in fig. 4, when there is an installation error in installing the mechanism in the channel, under the influence of the overall installation error, an offset Θ 1 of the top surface of the movable conduit relative to the central axis of the channel in the second direction is generated when the movable conduit is installed in the channel; as shown in fig. 5, on the basis of fig. 4, the offset theta 2 formed by the top surface of the movable conduit relative to the central axis of the channel in the second direction is formed by superposing the thermal expansion of the grid plate header and the thermal deformation of the plug in the support cylinder in the thermal deformation state of the plug, and the thermal expansion of the grid plate header connected with the lower surface of the component; as shown in fig. 6, the offset Θ 3 formed by the top surface of the support cylinder in the second direction relative to the central axis of the channel due to the rotation of the support cylinder along the cylinder axis of the support cylinder is superimposed on the basis of fig. 5, resulting in the second offset δ 2 of the top surface of the movable guide tube in the second direction relative to the central axis of the channel as shown in fig. 8. That is, δ 2 ═ Θ 1+ Θ 3- Θ 2.

In some embodiments, determining a third offset of the upper surface of the component in the second direction relative to the central axis of the passageway comprises:

determining an offset of an upper surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

determining an offset in a second direction relative to the central axis of the passageway created by bending of the assembly under temperature and irradiation;

In the present exemplary embodiment, the factors that influence the third offset amount of the upper surface of the component in the second direction with respect to the central axis of the passage include at least: the assembly is installed in the channel, and the assembly is affected by the thermal expansion of the grid plate header connected with the lower surface of the assembly and the bending of the assembly under the action of temperature and irradiation. Therefore, in determining the third offset of the upper surface of the module relative to the central axis of the passage in the second direction, the offset of the upper surface of the module relative to the central axis of the passage in the second direction, which is caused by the thermal expansion of the header plate connected to the lower surface of the module when the module is installed in the passage, and the offset of the upper surface of the module relative to the central axis of the passage in the second direction, which is caused by the bending of the module under the action of temperature and radiation, are determined. Thus, the combination of the various factors of influence advantageously determines the exact offset of the upper surface of the component in the second direction relative to the central axis of the passageway.

As shown in fig. 4, when there is an installation error in installing the mechanism in the channel, under the influence of the overall installation error, the offset of the upper surface of the component in the second direction relative to the central axis of the channel, which is generated when the component is installed in the channel, is the same as the offset of the lower surface of the component in the second direction relative to the central axis of the channel, and is Δ 1; as shown in fig. 5, the amount of offset of the upper surface of the assembly in the second direction relative to the central axis of the passage caused by the thermal expansion state of the stacked grid plate header on the basis of fig. 4 is equal to Δ 2 as the amount of offset of the lower surface of the assembly in the second direction relative to the central axis of the passage; as shown in fig. 7, the bending of the stacked assembly under the influence of temperature and radiation on the basis of fig. 5 results in an offset Δ 3 of the upper surface of the assembly in the second direction with respect to the central axis of the passage, resulting in a third offset δ 3 of the upper surface of the assembly in the second direction with respect to the central axis of the passage as shown in fig. 8. That is, δ 3 ═ Δ 1+ Δ 3- Δ 2.

In some embodiments, determining a fourth offset of the lower surface of the component in the second direction relative to the central axis of the channel comprises:

determining an offset of a lower surface of the component in a second direction relative to a central axis of the channel that results when the component is installed in the channel;

In this exemplary embodiment, affecting the fourth offset of the lower surface of the component in the second direction relative to the central axis of the channel includes at least:

the assembly is installed in the channel, and the assembly is affected by the thermal expansion of the grid plate header connected to the lower surface of the assembly. Therefore, in determining the fourth offset of the lower surface of the component relative to the central axis of the passage in the second direction, it is necessary to determine the offset of the lower surface of the component relative to the central axis of the passage in the second direction generated when the component is installed in the passage and the offset of the lower surface of the component relative to the central axis of the passage generated by the thermal expansion of the header plate connected to the lower surface of the component. Thus, by comprehensively considering all the influencing factors, the accurate offset of the lower surface of the component in the second direction relative to the central axis of the channel is determined.

As shown in fig. 4, when there is an installation error in installing the mechanism in the channel, under the influence of the overall installation error, the offset of the lower surface of the component in the second direction relative to the central axis of the channel, which is generated when the component is installed in the channel, is the same as the offset of the upper surface of the component in the second direction relative to the central axis of the channel, and is Δ 1; as shown in fig. 5, the offset of the lower surface of the module in the second direction relative to the central axis of the passage caused by the thermal expansion state of the stacked cascade plate header in fig. 4 is equal to Δ 2, which is the same as the offset of the upper surface of the module in the second direction relative to the central axis of the passage, and a third offset δ 4 of the lower surface of the module in the second direction relative to the central axis of the passage is obtained as shown in fig. 8. That is, δ 3 ═ Δ 1- Δ 2.

Among these, Δ 1, Γ 1, and Θ 1 can be given by design, guaranteed by the manufacturing and assembly process. Δ 2 can be given by the grid header 1 thermal expansion calculation data, and Γ 2 and Θ 2 can be given by the tap thermal expansion calculation data. Γ 3 and Θ 3 may be indirectly calculated from the main vessel axial thermal expansion data. Δ 3 may be calculated from the thermal expansion and radiation swelling of the control rod assembly 7.

In some embodiments, the obtaining a first included angle between the support cylinder and the movable guide pipe after the deformation of the installation channel structure based on the first distance, the first offset amount, the second distance, the second offset amount, and the third offset amount includes:

and obtaining the first included angle based on the included angle between the supporting cylinder and the projection and the included angle between the movable guide pipe and the projection.

In the present exemplary embodiment, as shown in fig. 8, the first included angle α between the supporting cylinder and the movable conduit after the deformation of the installation channel structure includes an included angle between projections of the supporting cylinder and the supporting cylinder in the second direction 110 after the deformation of the installation channel structure and an included angle between projections of the movable conduit and the movable conduit in the second direction 110 after the deformation of the installation channel structure. The included angle between the projection of the supporting cylinder and the projection of the supporting cylinder in the second direction 110 after the deformation of the installation channel structure isThe included angle between the movable conduit and the projection of the movable conduit in the second direction 110 after the deformation of the installation channel structureWherein, A is the elevation of the top surface of the supporting cylinder, C is the elevation of the top surface of the movable guide pipe, and D is the elevation of the upper surface of the component. Namely, it is

In some embodiments, obtaining a second included angle between the movable guide pipe and the component after the deformation of the installation channel structure based on the second distance, the second offset amount, the third distance, the third offset amount, and the fourth offset amount includes:

and obtaining the second included angle based on the included angle between the movable guide pipe and the projection and the included angle between the component and the projection.

In the present exemplary embodiment, as shown in fig. 8, the second included angle β between the movable conduit and the component after the deformation of the installation channel structure includes an included angle between projections of the movable conduit and the movable conduit in the second direction 110 after the deformation of the installation channel structure and an included angle between projections of the component and the component in the second direction after the deformation of the installation channel structure. The included angle between the movable conduit and the projection of the movable conduit in the second direction 110 after the deformation of the installation channel structure isThe included angle between the component and the projection of the component in the second direction after the deformation of the installation channel structure isWherein C is the elevation of the top surface of the movable conduit, D is the elevation of the upper surface of the assembly, E is the elevation of the lower surface of the assembly, and B in fig. 8 is the elevation of the lower surface of the lower shield plug. Namely, it is

The present application further provides a structural deformation determining apparatus for a control rod drive mechanism mounting channel. FIG. 9 is a schematic illustration of a structural distortion determining apparatus for a control rod drive mechanism mounting channel, according to an exemplary embodiment. As shown in fig. 9, the apparatus includes:

the first processing unit 41 is used for determining a first distance between the top surface of the support cylinder and the top surface of the movable guide pipe in the first direction, a second distance between the movable guide pipe and the upper surface of the component in the first direction and a third distance between the upper surface of the component and the lower surface of the component in the first direction;

a second processing unit 42 for determining a first offset of the top surface of the support cylinder with respect to the central axis of the passage in a second direction, a second offset of the top surface of the movable guide tube with respect to the central axis of the passage in the second direction, a third offset of the upper surface of the module with respect to the central axis of the passage in the second direction, and a fourth offset of the lower surface of the module with respect to the central axis of the passage in the second direction;

a third processing unit 43, configured to obtain a first included angle between the support cylinder and the movable conduit after the deformation of the installation channel structure based on the first distance, the first offset, the second distance, the second offset, and the third offset;

a fourth processing unit 44, configured to obtain a second included angle between the movable conduit and the component after the deformation of the installation channel structure, based on the second distance, the second offset, the third distance, the third offset, and the fourth offset; and the mounting channel is internally provided with a supporting cylinder, a movable guide pipe and an assembly which are connected with each other in sequence between the top surface of the supporting cylinder and the lower surface of the assembly along the central axis of the channel.

In the present exemplary embodiment, the first direction is a direction along the passage center axis, and the second direction is a direction perpendicular to the first direction. As shown in fig. 2, a grid plate header 1, a component 7, a movable conduit 4 and a support cylinder 5 which are connected in sequence are arranged in the installation channel. The grid plate header 1 is contacted with the lower surface of the component 7, the upper surface of the component 7 is contacted with the movable guide pipe 4, and the movable guide pipe 4 is connected with the supporting cylinder 5. Wherein the assembly 7 is composed of a control rod outer thimble 2 and an assembly moving body 3. The control rod drive mechanism 6 is mounted within the support cylinder 5 and is consolidated at the top surface of the support cylinder 5. The lower part of the component outer sleeve 2 is arranged in the small grid plate header seat 1, and the two are fixedly connected. The support cylinder 5 is flexibly connected with the movable conduit 4 at the top surface of the movable conduit 4. The movable conduit 4 is flexibly connected with the outer sleeve 2 of the component at the top surface of the component. The control rod drive mechanism 6 is affixed to the module moving body 3 at the top surface of the module. The module moving body 3 is movable up and down reciprocally within a certain stroke range by the control rod drive mechanism 6.

Theoretically, the small grid plate header 1, the module outer sleeve 2, the module moving body 3, the moving guide tube 4, the support cylinder 5, the control rod drive mechanism 6 and other devices and components in fig. 2 are coaxial as shown in fig. 3. However, in the manufacturing, installation and temperature rise of equipment such as a support tube inner faucet in a reactor, the radial thermal expansion of a grid plate header, the installation error and bending deformation of a control rod assembly, the manufacturing and installation error of a support tube, the thermal deformation of the faucet, the axial expansion unevenness of a main container and other factors can cause the installation channel to shift, bend and rotate, which has adverse effects on the quick rod falling performance of a control rod driving mechanism. The structural deformation determining device of the control rod driving mechanism installation channel can be applied to the control rod driving mechanism installation channel to determine the structural deformation condition of the installation channel.

The utility model provides a structural deformation determining means of control rod drive mechanism installation passageway determines the first contained angle and the second contained angle that is used for the sign to warp back structural morphology through confirming the interval and each mechanism for the offset of passageway the central axis between the adjacent mechanism of support section of thick bamboo, movable guide pipe and subassembly in the installation passageway to through the structural deformation back support section of thick bamboo with move first contained angle between the guide pipe and after the structural deformation move the guide pipe with the second contained angle of subassembly obtains the holistic structural morphology of final deformation back access structure. According to the method, the top surface of the supporting cylinder, the top surface of the movable guide pipe, the upper surface of the assembly and the lower surface of the assembly are selected in a specific determination method, and the movable connection point positions of the four mechanisms during connection are used as determination positions, so that the effective and accurate determination of the distance and the offset between the mechanisms is facilitated, the accurate structural form after deformation is obtained, the structural deformation condition of the determined channel is used as the actual structural deformation of the specific and actual installation channel, and whether the installation channel meets the installation index requirements of the control rod driving mechanism such as rod falling time and the like is determined. .

The application also provides a terminal. Fig. 10 is a diagram illustrating a terminal structure according to an example embodiment. As shown in fig. 10, a terminal provided in an embodiment of the present application includes: a processor 530 and a memory 520 for storing a computer program capable of running on the processor, wherein the processor 530 is configured to execute the steps of the method provided by the above embodiments when the computer program runs.

The present application also provides a computer-readable storage medium. The computer-readable storage medium provided by the embodiments of the present application stores thereon a computer program, which when executed by a processor implements the steps of the method provided by the above-mentioned embodiments.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, all the functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

In some cases, any two of the above technical features may be combined into a new method solution without conflict.

In some cases, any two of the above technical features may be combined into a new device solution without conflict.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media capable of storing program codes, such as a removable Memory device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, and an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

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Method and device for determining structural deformation of control rod drive mechanism installation channel

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