Installation method of IGA operation skill training simulator

Abstract

The invention relates to the technical field of nuclear power plant skill training, in particular to an installation method of an IGA operation skill training simulator. The method comprises the following steps: assembling a bottom bearing bracket of an operation platform at an open position of a hall of a first floor of a simulated pool, and hoisting to a middle platform; erecting a scaffold platform around the simulated pool; carrying out spot welding on a bearing bracket steel base plate and a simulated pool middle platform steel covering surface; the upper reactor internals simulation body and the IGA assembly simulation body are integrally assembled and hoisted to a middle platform; leveling the upper reactor internals simulation body; assembling a second-layer platform of the operation platform; hoisting a lower support ring of the reactor internal lifting appliance simulation body to an upper reactor internal simulation body by using a crane; splicing the reactor internals on the first floor; scattered parts and the like are installed; assembling an IGA lifting appliance; and installing a guide extension column operation tool. The installation efficiency is high, the installation risk of overall operation is minimum, and the controllable requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear power plant skill training, and in particular to an installation method of an IGA operation skill training simulation body. Background Art

[0002] The nuclear power plant's skill training center built an AP1000 core instrument grid simulation body and its hoisting equipment simulation body in accordance with the needs of improving personnel capabilities and on-site process verification. However, due to the significant difference in installation conditions with the actual equipment on site, the original installation method could not be used for installation. Therefore, it was necessary to explore a new installation method for installation, and at the same time, a specific installation platform was used to complete the installation of the simulation body. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an installation method for an IGA operation skill training simulation body, which has high installation efficiency, minimizes the installation risk of the overall operation and meets controllable requirements.

[0004] The present invention provides an installation method of an IGA operation skill training simulation body, comprising the following steps:

[0005] Step 1: Assemble the load-bearing bracket, connect the bottom of the load-bearing bracket with the bottom steel pad, and hoist the assembled load-bearing bracket to the middle platform of the simulated water pool;

[0006] Step 2: Adjust the load-bearing bracket to the correct position, and spot weld the aligned steel pad of the load-bearing bracket to the steel covering of the middle platform of the simulated water pool;

[0007] Step 3: Assemble the upper reactor internals simulation body and the IGA assembly simulation body, and hoist them to the middle platform of the simulated water pool after assembly, and place them in the middle position of the bottom load-bearing support;

[0008] Step 4: Leveling the upper internal component simulation body;

[0009] Adjust the adjustment pad at the bottom of the load-bearing bracket to level the upper support plate of the upper internal component simulation body. After the horizontality is adjusted to the right level, spot weld the bottom wedge block of the adjustment pad to the load-bearing bracket, and connect and fix the upper support plate to the load-bearing bracket with bolts;

[0010] Step 5: Assemble the first column, scissor support and platform of the operating platform into an integral structure, hoist it to the middle platform of the simulated water pool, place it on the bottom load-bearing bracket, and connect and fix it;

[0011] Step 6: hoisting the lower support ring of the pile internal component hoisting device simulation body to the upper pile internal component simulation body;

[0012] Install the lower support ring, three second columns and the middle support ring of the pile internal component lifting device simulation body;

[0013] Step 7: After the assembly, the simulated body of the lifting device for the internals of the reactor is hoisted to the middle platform of the simulated water pool, and falls on the simulated body of the upper internals of the reactor, and the guide structure is installed and fixed simultaneously;

[0014] Step 8: Install the remaining loose parts;

[0015] Step 9: hoist the guide extension column to the upper part of the auxiliary platform of the internal component hoist simulation body, pass the guide extension column through the waist-shaped long hole of the auxiliary platform and lower it to the upper part of the upper internal component simulation body IGA guide column, rotate the guide extension column, and connect the guide extension column with the IGA guide column;

[0016] Step 10: Lift the lower lifting sleeve of the IGA sling to the upper part of the auxiliary platform of the sling simulation body of the internal component, pass the lower lifting sleeve of the IGA sling through the waist-shaped long hole of the auxiliary platform and lower it along the guide extension column to the upper part of the IGA guide cylinder, and rotate the lower lifting sleeve until the lower lifting sleeve is hooked with the IGA guide cylinder;

[0017] Step 11: Lift the IGA spreader support frame assembly to the top of the auxiliary platform, slowly lower it, adjust the position of the IGA spreader lifting tube assembly, and pass the support block of the support frame assembly through the top of the lifting tube until the support frame assembly legs are in contact with the auxiliary platform;

[0018] Step 12: Install the guide extension post operating tool.

[0019] In a specific embodiment of the present invention, in step 1, the load-bearing bracket is assembled from two structures, the dimensions of a single structure are 6800mm×3400mm×800mm, and the pre-tightening torque of the connecting bolts of the two structures is 550Nm;

[0020] A Ф3400mm hollow structure is arranged in the middle of the load-bearing support, and a 3mm lentil steel plate is laid in the remaining positions.

[0021] In a specific embodiment of the present invention, in step 2, the load-bearing bracket is adjusted and aligned to the position using a crane.

[0022] In a specific embodiment of the present invention, in step 4, a laser level is used to measure the horizontality of the upper end surface of the upper support plate, and leveling is performed according to the obtained measurement value.

[0023] In a specific embodiment of the present invention, in step 5, a plurality of first columns are connected to the lower surface of the operating platform, a scissors brace is provided between adjacent columns, and the other end of the first column is connected and fixed to a load-bearing bracket.

[0024] In a specific embodiment of the present invention, in step 6, the lower support ring serves as the installation basis for the three second columns, and the middle support ring of the in-pile component hoist and the three second columns are assembled. After the assembly is completed, the middle support ring together with the three second columns are hoisted as a whole above the upper in-pile component simulation body, and the three second columns are aligned with the installation port of the lower support ring and connected.

[0025] In a specific embodiment of the present invention, the scattered parts include upper stairs, lower stairs, walking passages and railings;

[0026] The upper stairs are arranged between the auxiliary platform and the platform, and the lower stairs are arranged between the load-bearing bracket and the platform; the auxiliary platform is flush with the upper end surface of the simulated water pool, and the two are connected by a water pool walking channel; and railings are arranged around the platform.

[0027] In a specific embodiment of the present invention, in step 9, there are 4 groups of guide extension columns, and this step is repeated to install them in sequence.

[0028] In a specific embodiment of the present invention, step 12 specifically includes: lifting the guide extension column operating tool to the top of the auxiliary platform of the in-pillar component hoist simulation body, inserting the guide extension column operating tool into the IGA hoist lifting tube assembly, adjusting the position of the operating tool, and confirming that the operating tool grabbing action is in place.

[0029] In a specific embodiment of the present invention, after step 1, it also includes: setting up a scaffolding platform around the simulated water pool; the scaffolding platform serves as a hanging point for the entire rope during installation work, and a safe working area is set in the middle platform of the simulated water pool.

[0030] Compared with the prior art, the present invention combines the on-site working conditions and the size of the equipment itself, while taking into account the on-site industrial safety, and proposes a complete IGA operation simulation body installation method. The installation process of the present invention is reasonable, the entire process flow is fully considered, the installation efficiency is high, the installation risk of the overall operation is minimized, and the controllable requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the hoisting of the load-bearing bracket at the bottom of the operating platform of the present invention;

[0032] Figure 2 It is a schematic diagram of the hoisting of the upper internal components and the IGA assembly simulation body of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation of the second-layer bracket of the operating platform of the present invention;

[0034] Figure 4 It is a schematic diagram of hoisting the simulated body of the hoisting device for the internal components of the pile according to the present invention;

[0035] Figure 5 This is a schematic diagram of the installation of the IGA hanger of the present invention;

[0036] Description of the markings in the figure:

[0037] 1- auxiliary platform, 2- steel pad, 3- steel cladding of simulated water pool, 4- upper internal component simulation body and IGA assembly simulation body, 5- platform, 6- IGA hoist simulation body, 7- internal component hoist simulation body, 8- crane, 9- middle platform of simulated water pool, 10- load-bearing bracket. DETAILED DESCRIPTION

[0038] In order to further understand the present invention, the embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the present invention.

[0039] IGA is the in-pile instrumentation grid assembly.

[0040] The embodiment of the present invention discloses a method for installing an IGA operation skill training simulation body, such as Figures 1 to 5 As shown, the following steps are included:

[0041] Step 1: Assemble the load-bearing bracket, connect the bottom of the load-bearing bracket with the bottom steel pad, and use a crane to hoist the assembled load-bearing bracket to the middle platform of the simulated water pool;

[0042] The load-bearing bracket is assembled from two structures, with the dimensions of a single structure being 6800mm×3400mm×800mm, and the pre-tightening torque of the connecting bolts of the two structures being 550Nm;

[0043] A Ф3400mm hollow structure is arranged in the middle of the load-bearing support, and a 3mm lentil steel plate is laid in the remaining positions.

[0044] It also includes: setting up a scaffolding platform around the simulated water pool; the scaffolding platform is used as a hanging point for all ropes during installation operations; a safe operation area is set in the middle platform of the simulated water pool for personnel to stand during operations; in the safe operation area, the operators use safety belts as safety protection.

[0045] Step 2: Use a crane to adjust the load-bearing bracket to the correct position, and spot weld the aligned steel pad of the load-bearing bracket to the steel covering of the middle platform of the simulated water pool;

[0046] Step 3: Assemble the upper reactor internals simulation body and the IGA assembly simulation body, and hoist them to the middle platform of the simulated water pool after assembly, and place them in the middle position of the bottom load-bearing support;

[0047] Step 4: Adjust the adjustment pad at the bottom of the load-bearing bracket to level the upper support plate of the upper internal component simulation body. Specifically, use a laser level to measure the levelness of the upper end surface of the upper support plate, and perform leveling according to the obtained measured value; after the levelness is adjusted to the right level, spot weld the bottom wedge block of the adjustment pad to the load-bearing bracket, and connect and fix the upper support plate and the load-bearing bracket with bolts;

[0048] Step 5: Assemble the first column, scissor brace and platform of the operating platform into an integral structure, hoist it to the middle platform of the simulated pool, place it on the bottom load-bearing bracket, and fix it with bolts;

[0049] The lower surface of the operating platform is connected to a plurality of first columns, and scissor braces are arranged between adjacent columns. The other ends of the first columns are connected and fixed to the load-bearing brackets.

[0050] Step 6: Install the lower support ring, three second columns and the middle support ring of the pile internal component lifting device simulation body;

[0051] Specifically, a crane is used to lift the lower support ring of the in-piler component lifting fixture simulation body, and the lower support ring serves as the installation basis for the three second columns. The middle support ring of the in-piler component lifting fixture and the three second columns are assembled. After the assembly is completed, the middle support ring together with the three second columns are lifted as a whole to the top of the upper in-piler component simulation body, and the three second columns are aligned with the installation opening of the lower support ring and connected.

[0052] Step 7: After the assembly, the simulated body of the lifting device for the internals of the pile is hoisted to the middle platform of the simulated water pool, and falls on the simulated body of the upper internals of the pile. The guide structure is installed and fixed simultaneously, and fixed by the hook operating device;

[0053] Step 8: Install the remaining loose parts;

[0054] The scattered parts include upper stairs, lower stairs, walking paths and railings;

[0055] The upper stairs are arranged between the auxiliary platform and the platform, and the lower stairs are arranged between the load-bearing bracket and the platform; the auxiliary platform is flush with the upper end surface of the simulated water pool, and the two are connected by a water pool walking channel; and railings are arranged around the platform.

[0056] Step 9: Use a crane to lift the guide extension column to the top of the auxiliary platform of the internal component hoist simulation body, pass the guide extension column through the waist-shaped long hole of the auxiliary platform and lower it to the top of the upper internal component simulation body IGA guide column, rotate the guide extension column, and connect the guide extension column with the IGA guide column; there are three groups of IGA guide extension columns, all of which are installed in place according to the method in this step;

[0057] Step 10: Lift the lower lifting sleeve of the IGA sling to the upper part of the auxiliary platform of the sling simulation body of the internal component, pass the lower lifting sleeve of the IGA sling through the waist-shaped long hole of the auxiliary platform and lower it along the guide extension column to the upper part of the IGA guide cylinder, and rotate the lower lifting sleeve until the lower lifting sleeve is hooked with the IGA guide cylinder;

[0058] Step 11: Lift the IGA spreader support frame assembly to the top of the auxiliary platform through a special lifting chain, slowly lower it, adjust the position of the 4 sets of IGA spreader lifting tube assemblies, and pass the support block of the support frame assembly through the top of the lifting tube until the support frame assembly legs are in contact with the auxiliary platform;

[0059] Step 12: Lift the guide extension column operating tool to the top of the auxiliary platform of the in-pillar component hoist simulation body, insert the guide extension column operating tool into the IGA hoist lifting tube assembly, adjust the position of the operating tool, and confirm that the operating tool grabbing action is in place.

[0060] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for installing an IGA operation skill training simulation body, characterized in that: The following steps are involved: Step 1: Assemble the load-bearing bracket, connect the bottom of the load-bearing bracket with the bottom steel pad, and hoist the assembled load-bearing bracket to the middle platform of the simulated water pool; Step 2: Adjust the load-bearing bracket to the correct position, and spot weld the aligned steel pad of the load-bearing bracket to the steel covering of the middle platform of the simulated water pool; Step 3: Assemble the upper reactor internals simulation body and the IGA assembly simulation body, and hoist them to the middle platform of the simulated water pool after assembly, and place them in the middle position of the bottom load-bearing support; Step 4: Leveling the upper internal component simulation body; Adjust the adjustment pad at the bottom of the load-bearing bracket to level the upper support plate of the upper internal component simulation body. After the horizontality is adjusted to the right level, spot weld the bottom wedge block of the adjustment pad to the load-bearing bracket, and connect and fix the upper support plate to the load-bearing bracket with bolts; Step 5: Assemble the first column, scissor support and platform of the operating platform into an integral structure, hoist it to the middle platform of the simulated water pool, place it on the bottom load-bearing bracket, and connect and fix it; Step 6: hoisting the lower support ring of the pile internal component hoisting device simulation body to the upper pile internal component simulation body; Install the lower support ring, three second columns and the middle support ring of the pile internal component lifting device simulation body; Step 7: After the assembly, the simulated body of the lifting device for the internals of the reactor is hoisted to the middle platform of the simulated water pool, and falls on the simulated body of the upper internals of the reactor, and the guide structure is installed and fixed simultaneously; Step 8: Install the remaining loose parts; Step 9: hoist the guide extension column to the upper part of the auxiliary platform of the internal component hoist simulation body, pass the guide extension column through the waist-shaped long hole of the auxiliary platform and lower it to the upper part of the upper internal component simulation body IGA guide column, rotate the guide extension column, and connect the guide extension column with the IGA guide column; Step 10: Lift the lower lifting sleeve of the IGA sling to the upper part of the auxiliary platform of the sling simulation body of the internal component, pass the lower lifting sleeve of the IGA sling through the waist-shaped long hole of the auxiliary platform and lower it along the guide extension column to the upper part of the IGA guide cylinder, and rotate the lower lifting sleeve until the lower lifting sleeve is hooked with the IGA guide cylinder; Step 11: Lift the IGA spreader support frame assembly to the top of the auxiliary platform, slowly lower it, adjust the position of the IGA spreader lifting tube assembly, and pass the support block of the support frame assembly through the top of the lifting tube until the support frame assembly legs are in contact with the auxiliary platform; Step 12: Install the guide extension post operating tool.

2. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 1, the load-bearing bracket is assembled from two structures, the dimensions of a single structure are 6800mm×3400mm×800mm, and the pre-tightening torque of the connecting bolts of the two structures is 550Nm; A Ф3400mm hollow structure is arranged in the middle of the load-bearing support, and a 3mm lentil steel plate is laid in the remaining positions.

3. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 2, the load-bearing bracket is adjusted and aligned with the position using a crane.

4. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 4, the horizontality of the upper end surface of the upper support plate is measured using a laser level, and leveling is performed based on the obtained measurement values.

5. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 5, a plurality of first columns are connected to the lower surface of the operating platform, and scissor braces are provided between adjacent columns. The other ends of the first columns are connected and fixed to the load-bearing brackets.

6. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 6, the lower support ring serves as the installation basis for the three second columns, and the middle support ring of the in-pile component hoist and the three second columns are assembled. After the assembly is completed, the middle support ring together with the three second columns are hoisted as a whole above the upper in-pile component simulation body, and the three second columns are aligned with the installation opening of the lower support ring and connected.

7. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: The scattered parts include upper stairs, lower stairs, walking paths and railings; The upper stairs are arranged between the auxiliary platform and the platform, and the lower stairs are arranged between the load-bearing bracket and the platform; the auxiliary platform is flush with the upper end surface of the simulated water pool, and the two are connected by a water pool walking channel; and railings are arranged around the platform.

8. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: In step 9, there are 4 groups of guide extension columns in total, and this step is repeated to install them in sequence.

9. The method for installing the IGA operation skill training simulation body according to claim 1, characterized in that: The step 12 specifically includes: hoisting the guide extension column operating tool to the upper part of the auxiliary platform of the in-pillar component hoist simulation body, inserting the guide extension column operating tool into the IGA hoist lifting tube assembly, adjusting the position of the operating tool, and confirming that the operating tool grabbing action is in place.

10. The installation method of the IGA operation skill training simulation body according to claim 1, characterized in that: After step 1, the method further includes: setting up a scaffolding platform around the simulated water pool; the scaffolding platform serves as a hanging point for all ropes during installation work, and a safe operation area is set on the middle platform of the simulated water pool.

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