Tool for adjusting insertion depth of anti-vibration strip of nuclear power heat exchanger and adjusting method applying tool

Abstract

The invention discloses a nuclear power heat exchanger anti-vibration strip insertion depth adjusting tool and an adjusting method applying the same, the adjusting tool is provided with a front end top block which can be fully contacted with the bending position of an anti-vibration strip, so that the anti-vibration strip is pushed to move through the front end top block, and the specific size and shape of the adjusting tool are matched with the special condition of the position of the anti-vibration strip. The anti-vibration strip and the heat exchange tube can be smoothly deepened and taken out, and can be prevented from being scratched; according to the adjusting method, stress balance of the two ends of the anti-vibration strip can be balanced, so that the two ends of the anti-vibration strip are basically and symmetrically moved in batches, the insertion depth of the anti-vibration strip is adjusted on the basis of ensuring that the anti-vibration strip and the heat exchange tube are not damaged, and the quality requirement of nuclear power equipment is met.

Description

Technical Field

[0001] The present invention relates to a general anti-vibration strip insertion depth adjustment control technology for nuclear power heat exchangers, and particularly to a technology for adjusting and controlling the overlap amount between V-shaped anti-vibration strips and U-shaped heat exchange tubes of nuclear power pressurized steam generators. Background Art

[0002] The tube bundle assembly of a steam generator is the most important component in the steam generator. The tube bundle assembly is the heat exchange part of the entire steam generator during operation. The anti-vibration strip assembly in it supports all the heat exchange tubes in the tube bundle assembly. Its structure is related to the fretting wear, stress corrosion, heat transfer condition, etc. of the heat exchange tubes, and it is an important component for increasing the natural vibration frequency and preventing the tube bundle from being damaged due to flow-induced vibration during operation. The heat transfer tubes of the steam generator are the boundary barriers between the primary side and the secondary side. The integrity of the heat transfer tubes is an important guarantee for nuclear safety. The installation position of the supporting member, the V-shaped anti-vibration strip, has become an important part affecting the integrity of the heat exchange tubes and reducing wear.

[0003] In nuclear island heat exchange equipment, the heat exchange tubes are the first barrier for isolating radioactive substances. The installation position of the anti-vibration strips affects the quality of the heat exchange tubes and is related to the operation safety of nuclear power plants. The installation of anti-vibration strips is an important key technology in the manufacture of steam generator products. According to the current operation experience of steam generators, some heat exchange tubes are worn during operation. The installation position of the anti-vibration strips directly affects the supporting effect of the heat exchange tubes, thereby affecting the operation safety of nuclear power plants. Solving the problem of improper installation position of anti-vibration strips is one of the important ways to meet the product requirements and is of great significance to the development of nuclear power technology.

[0004] With the continuous increase in the capacity of nuclear power units and the gradual improvement of safety performance requirements, studying the installation position of anti-vibration strips can provide strong technical support for improving the manufacturing quality of nuclear power products and further enhancing the operation safety of nuclear power plants.

[0005] Recently, it has been found in the industry that when the insertion depth of the anti-vibration strip is insufficient, that is, when the overlap amount between the anti-vibration strip and the heat exchange tube does not meet the overlap requirement, wear of the heat exchange tube may occur during operation, affecting the operation safety of the steam generator, and it must be adjusted.

[0006] Affected by the manufacturing process of the steam generator, during the subsequent manufacturing process after the installation of the anti-vibration strip is completed, the insertion depth position of the anti-vibration strip will inevitably change. However, there is currently no systematic research on the adjustment technology for the insertion depth (overlap amount) of the anti-vibration strip in the industry.

[0007] Based on this, the inventor of the present invention has conducted in-depth research on the adjustment scheme when the insertion depth of the anti-vibration strip changes after installation, in order to design a nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool and an adjustment method using the same to solve the above problems. Summary of the Invention

[0008] In order to overcome the above problems, the inventor of the present invention has conducted intensive research and designed an anti-vibration strip insertion depth adjustment tool for a nuclear power heat exchanger and an adjustment method using the same; a front end top block capable of fully contacting the bent portion of the anti-vibration strip is provided on the adjustment tool, so as to push the anti-vibration strip to move through the front end top block. The specific size and shape of the adjustment tool are adapted to the special conditions of the position where the anti-vibration strip is located, and it can smoothly penetrate and be taken out, and can avoid scratching the anti-vibration strip and the heat exchange tube; the adjustment method can balance the force balance at both ends of the anti-vibration strip, so that the two ends of the anti-vibration strip move in batches in a basically symmetrical manner, and on the basis of ensuring that the anti-vibration strip and the heat exchange tube are not damaged, the insertion depth of the anti-vibration strip is adjusted to meet the quality requirements of nuclear power equipment, thus completing the present invention.

[0009] Specifically, the object of the present invention is to provide an anti-vibration strip insertion depth adjustment tool for a nuclear power heat exchanger. The anti-vibration strip 1 is in the shape of a long strip with a bent middle portion; a transition arc is provided at the bent portion.

[0010] The adjustment tool includes: a front end top block 2 and a connecting rod 3 connected thereto.

[0011] The bottom surface of the front end top block 2 includes an arc surface 21 located in the middle and flat surfaces 22 on both sides of the arc surface 21, and the arc surface 21 and the flat surface 22 are smoothly transitioned.

[0012] The arc surface 21 can be embedded into the transition arc of the anti-vibration strip 1.

[0013] A predetermined angle is formed between the two flat surfaces 22 on the bottom surface of the front end top block 2, and the predetermined angle is slightly less than or equal to the bending angle of the anti-vibration strip 1.

[0014] The radius dimension of the arc surface 21 is slightly larger than the radius dimension of the transition arc.

[0015] Wherein, the connecting rod 3 is located on one side of the front end top block 2, and the thickness and length dimensions of the front top block 2 enable it to be inserted into two adjacent anti-vibration strips 1 up and down.

[0016] Wherein, the thickness of the front end top block 2 is greater than or equal to 2 mm, and is more than 2 mm smaller than the minimum distance between two adjacent anti-vibration strips 1 up and down.

[0017] Wherein, in the area where the heat exchange tubes are arranged in an equilateral triangle, the width of the front end top block 2 is greater than or equal to 1.5 times the equilateral triangle pitch of the heat exchange tube arrangement, ensuring that the tool cannot be inserted into the distance between adjacent heat exchange tubes in the same row.

[0018] Wherein, the length of the connecting rod 3 is greater than the leg length of the anti-vibration strip 1.

[0019] Preferably, when the front end top block 2 is embedded into the bending part of the anti-vibration strip 1, the connecting rod 3 extends outwards relative to the anti-vibration strip 1 by 100 - 500 mm.

[0020] The present invention also provides a method for adjusting the insertion depth of the anti-vibration strip of a nuclear power heat exchanger, and this method is realized by using the tool for adjusting the insertion depth of the anti-vibration strip of the nuclear power heat exchanger described above.

[0021] Preferably, this method includes the following steps:

[0022] Step 1: Rotate the tube bundle assembly where the anti-vibration strip 1 is located so that the anti-vibration strip 1 to be adjusted is in a vertical state with the plane where the heat exchange tubes are located.

[0023] Step 2: Adjust the circumferential orientation of the tube bundle assembly so that the two leg ends of the anti-vibration strip 1 are in a relatively free state.

[0024] Step 3: Clean and protect against bumps on the heat exchange tube bundle.

[0025] Step 4: Mark the adjustment reference line on the end caps of the two legs of the anti-vibration strip 1.

[0026] Step 5: Insert the tool for adjusting the insertion depth of the anti-vibration strip of the nuclear power heat exchanger along one leg of the anti-vibration strip 1 to be adjusted to the working position, so that the arc surface 21 of the front end top block 2 of this adjustment tool abuts against the transition arc of the anti-vibration strip 1.

[0027] Step 6: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool so that the position of the anti-vibration strip 1 is adjusted by 3 - 5 mm each time; preferably, strike continuously 3 - 5 times each time.

[0028] Step 7: Remove the adjustment tool, rotate the tube bundle assembly where the anti-vibration strip 1 is located by 180 degrees, and then insert the adjustment tool along the other leg of the anti-vibration strip 1 to be adjusted to the working position.

[0029] Step 8: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool so that the position of the anti-vibration strip 1 is adjusted by 3 - 5 mm each time; preferably, strike continuously 3 - 5 times each time.

[0030] Step 9: Repeat Step 7 and Step 8, and measure the adjustment distance of the position of the anti-vibration strip 1 each time during execution to ensure that the adjustment distances of the two legs of the anti-vibration strip are the same; until the adjustment is completed.

[0031] Preferably, this method includes the following steps:

[0032] During and after the adjustment process, detect the overlapping situation between the anti-vibration strip and the heat exchange tubes by eddy current detection method.

[0033] The beneficial effects of the present invention include:

[0034] (1) According to the anti-vibration strip insertion depth adjustment tool for nuclear power heat exchangers provided by the present invention and the adjustment method using the same, the tool and method can adjust the insertion depth of the anti-vibration strip without damaging the heat exchange tubes and the anti-vibration strips, thereby improving the safety and service life of nuclear power equipment;

[0035] (2) According to the anti-vibration strip insertion depth adjustment tool for nuclear power heat exchangers provided by the present invention and the adjustment method using the same, the tool has a simple structure and is specifically adapted to the complex working conditions of the anti-vibration strips, and can effectively assist in pushing the anti-vibration strips, solving the problem that the anti-vibration strips cannot be effectively moved in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Shows the structural schematic diagram of the anti-vibration strip insertion depth adjustment tool for nuclear power heat exchangers provided by the present application;

[0037] Figure 2 Shows the partial structural schematic diagram of the heat exchange tube bundle in the anti-vibration strip insertion depth adjustment tool for nuclear power heat exchangers provided by the present application and the adjustment method using the same;

[0038] Figure 3 Shows the structural schematic diagram of the relative position between the anti-vibration strip and the adjustment tool during adjustment in the anti-vibration strip insertion depth adjustment method for nuclear power heat exchangers provided by the present application;

[0039] Figure 4 Shows the structural schematic diagram of a part of the heat exchange tube bundle and the anti-vibration strip.

[0040] DESCRIPTION OF THE REFERENCE NUMERALS

[0041] 1 - Anti-vibration strip

[0042] 2 - Front end top block

[0043] 21 - Arc surface

[0044] 22 - Plane

[0045] 3 - Connecting rod

[0046] 4 - Heat exchange tube

[0047] 5 - Adjustment tool DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] The present invention will be further described in detail below with reference to the drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become more clear and definite.

[0049] The special term "exemplary" herein means "serving as an example, embodiment, or illustrative". Any embodiment described herein as "exemplary" does not necessarily have to be construed as superior to or better than other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings do not have to be drawn to scale unless otherwise specified.

[0050] The present invention provides a tool for adjusting the insertion depth of anti-vibration bars of a nuclear power heat exchanger. As shown in Figure 1 and Figure 3 , the anti-vibration bar 1 is in the shape of a long strip bent in the middle; a transition arc is provided at the bent portion; in this application, the long strip structures at both ends of the bent portion on the anti-vibration bar 1 are called legs, that is, the two legs of the anti-vibration bar;

[0051] In this application, the anti-vibration bar penetrates into the heat exchange tube assembly, and the anti-vibration bar is in close contact with the heat exchange tube 4, so as to support and fix the heat exchange tube through the anti-vibration bar; the anti-vibration bars and the heat exchange tubes are arranged densely. After the anti-vibration bars are installed, it is difficult to adjust the position of the anti-vibration bars without scratching the heat exchange tubes and the anti-vibration bars according to the conventional scheme. As shown in the partial heat transfer tubes and partial anti-vibration bars shown in Figure 4 , Figure 4 the densely arranged heat exchange tubes 4 are shown, and the short lines extending from the edge position of the heat exchange tube bundle are the anti-vibration bars.

[0052] The adjustment tool 5 includes: a front end top block 2 and a connecting rod 3 connected thereto;

[0053] On the bottom surface of the front end top block 2, there is an arc surface 21 in the middle and flat surfaces 22 on both sides of the arc surface 21, and the arc surface 21 and the flat surfaces 22 are smoothly transitioned;

[0054] The arc surface 21 can be embedded into the transition arc of the anti-vibration bar 1;

[0055] The two flat surfaces 22 on the bottom surface of the front end top block 2 form a predetermined angle, and the predetermined angle is slightly less than or equal to the bending angle of the anti-vibration bar 1. The bending angle of the anti-vibration bar 1 is the included angle between the two legs of the anti-vibration bar. Such a setting can ensure that the arc surface of the front end top block 2 can be smoothly embedded into the transition arc without scratching the anti-vibration bar; preferably, the specific value of the predetermined angle is determined according to the specific angle of the anti-vibration bar. For example, Figure 1 the situation when the predetermined angle is 119 degrees is shown in

[0056] The radius dimension of the arc surface 21 is slightly larger than the radius dimension of the transition arc. Such a design enables the anti-vibration bar not to have defects such as indentations on the anti-vibration bar body when the anti-vibration bar is subjected to the acting force of the adjustment tool during the adjustment stage.

[0057] Preferably, the connecting rod 3 is located on one side of the front end top block 2, that is, only one connecting rod 3 is provided on the adjustment tool, so as to facilitate the assembly and removal of the tool during adjustment; the length of the side without legs ensures that it can be smoothly inserted between two adjacent anti-vibration bars, that is, the thickness and length dimensions of the front top block 2 enable it to be inserted between two adjacent anti-vibration bars 1.

[0058] Preferably, the thickness of the front end top block 2 is greater than or equal to 2 mm and is more than 2 mm less than the minimum distance between two adjacent vibration damping strips 1 above and below. Such a thickness design allows a thin-walled protective article to be wrapped around the outer wall of the adjusting tool while leaving an installation gap. Otherwise, it is easy to cause scratches on the heat exchange tubes during installation and removal, and at the same time, the installation difficulty will also increase. In this application, the thickness of the front end top block 2 is Figure 1 the distance dimension in the vertical direction in Figure 1 the distance dimension perpendicular to the paper surface direction in

[0059] Preferably, within the equilateral triangle arrangement area of the heat exchange tubes, the width of the front end top block 2 is greater than or equal to 1.5 times the pitch of the heat exchange tubes, ensuring that the adjusting tool cannot be inserted into the space between adjacent rows of heat exchange tubes; Figure 2 The structural schematic diagram when the heat exchange tubes are arranged in an equilateral triangle is shown in Figure 2 and the relative position relationship between the front end top block and the heat exchange tubes is also shown in

[0060] During the adjustment process, it is not visible inside. Therefore, in this application, the width of the above-mentioned front end top block 2 is set to ensure that the adjusting tool will not mistakenly enter the heat exchange tubes in adjacent rows.

[0061] Preferably, the adjusting tool is made of a material similar to that of the heat exchange tubes or a stainless steel material is selected. The material selection shall not cause pollution to the product body and shall have a certain strength to meet the force transmission.

[0062] To reduce the abrasion and scratches between the tool and the product body, the flatness of the adjusting tool is controlled within 1 mm.

[0063] In contact with the adjusting tool are the heat exchange tubes and the vibration damping strips. These two parts have strict requirements for surface quality, especially the heat exchange tubes. Therefore, all the edges of the adjusting tool in this application are rounded.

[0064] In a preferred embodiment, the length of the connecting rod 3 is greater than the leg length of the vibration damping strip 1.

[0065] Preferably, when the front end top block 2 is embedded in the bent portion of the vibration damping strip 1, the connecting rod 3 extends outward 100 - 500 mm relative to the vibration damping strip 1. When setting the length of the rod 3, the protection of the tube bundle part needs to be considered, meeting the self-strength of the vibration damping strip adjusting tool and the use requirements of the vibration damping strip adjusting tool. Moreover, since the length of each vibration damping strip is different, the length of the connecting rod 3 is also correspondingly different. The length of one of the connecting rods 3 is as Figure 1 shown as 1650 mm in

[0066] Preferably, there is a certain gap between the connecting rod 3 of the adjustment tool and the corresponding part of the anti-vibration strip leg. When designing the angle of the connecting rod 3, make the opening angle relative to the front end top block slightly smaller than the opening angle of the anti-vibration strip leg, and the tail of the connecting rod 3 does not interfere with the adjacent anti-vibration strips. Preferably, considering that the opening angles of each anti-vibration strip are different, accordingly, the opening angles of the connecting rod 3 relative to the front end top block are also different. For example Figure 1 as shown in Figure 1 , the opening angle of one connecting rod 3 relative to the front end top block is 45 degrees. Such a design ensures that the anti-vibration strip can pass through two adjacent anti-vibration strips, and the front end of the adjustment tool fits with the anti-vibration strip, ensuring that the force application point is at the front end during the adjustment process.

[0067] The present invention also provides a method for adjusting the insertion depth of the anti-vibration strip of a nuclear power heat exchanger, which is realized by using the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool described above. Specifically, the method includes the following steps:

[0068] Step 1: Rotate the tube bundle assembly where the anti-vibration strip 1 is located so that the anti-vibration strip 1 to be adjusted is in a nearly vertical state with respect to the plane where the heat exchange tubes are located; at this time, there is no extrusion between the heat exchange tubes and the anti-vibration strip, which is conducive to the adjustment of the anti-vibration strip;

[0069] Step 2: Adjust the circumferential orientation of the tube bundle assembly so that the two leg ends of the anti-vibration strip 1 are in a relatively free state;

[0070] Step 3: Clean and protect against bumps on the heat exchange tube bundle; avoid damaging the product body;

[0071] Step 4: Mark the adjustment reference lines on the end caps of the two legs of the anti-vibration strip 1 so as to be able to measure the adjustment distance of the anti-vibration strip in real time during adjustment and ensure that the adjustment distances of the two leg ends are the same;

[0072] Step 5: Insert the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool along one leg of the anti-vibration strip 1 to be adjusted to the working position, so that the arc surface 21 of the front end top block 2 of the adjustment tool abuts against the transition arc of the anti-vibration strip 1;

[0073] Step 6: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool so that the position of the anti-vibration strip 1 is adjusted by 3 - 5 mm each time; preferably, strike continuously 3 - 5 times each time;

[0074] Step 7: Remove the adjustment tool, rotate the tube bundle assembly where the anti-vibration strip 1 is located by 180 degrees, and then insert the adjustment tool along the other leg of the anti-vibration strip 1 to be adjusted to the working position;

[0075] Step 8: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool so that the position of the anti-vibration strip 1 is adjusted by 3 - 5 mm each time; preferably, strike continuously 3 - 5 times each time;

[0076] Step 9: Repeat Steps 7 and 8. During each execution, measure the position adjustment distance of the anti-vibration strip 1 to ensure that the adjustment distances of the two legs of the anti-vibration strip are consistent; continue the adjustment until it is completed.

[0077] Preferably, the method includes the following steps: During and after the adjustment process, use an eddy current detection method to detect the overlapping situation between the anti-vibration strip and the heat exchange tube. Determine whether the anti-vibration strip is adjusted to the optimal position by judging this overlapping situation. When the overlapping amount meets the requirements, it can be considered that the anti-vibration strip is adjusted to the optimal position.

[0078] Embodiment

[0079] During the installation process of the CAP1000 steam generator, after installing the anti-vibration strip, further perform subsequent manufacturing processes. After the subsequent manufacturing processes are completed, it is detected that the anti-vibration strip has deviated from its initial installation position. For the anti-vibration strip that has deviated from its initial installation position, adjust the insertion depth of the anti-vibration strip through the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool shown in Figure 1 and Figure 3 ; specifically, it includes the following steps:

[0080] Step 1: Rotate the tube bundle assembly where the anti-vibration strip 1 is located so that the plane where the anti-vibration strip 1 to be adjusted and the heat exchange tube are located is in a vertical state;

[0081] Step 2: Adjust the circumferential orientation of the tube bundle assembly to make the end parts of the two legs of the anti-vibration strip 1 in a relatively free state;

[0082] Step 3: Clean and protect the heat exchange tube bundle from being knocked;

[0083] Step 4: Mark the adjustment reference line on the end caps of the two legs of the anti-vibration strip 1;

[0084] Step 5: Insert the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool along one leg of the anti-vibration strip 1 to be adjusted to the working position, so that the arc surface 21 of the front end top block 2 of the adjustment tool abuts against the transition arc of the anti-vibration strip 1;

[0085] Step 6: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool to adjust the position of the anti-vibration strip 1 by 4 mm;

[0086] Step 7: Remove the adjustment tool, rotate the tube bundle assembly where the anti-vibration strip 1 is located by 180 degrees, and then insert the adjustment tool along the other leg of the anti-vibration strip 1 to be adjusted to the working position;

[0087] Step 8: Use a rubber hammer to strike the tail end of the connecting rod 3 of the adjustment tool to adjust the position of the anti-vibration strip 1 by 4 mm;

[0088] Step 9: Repeat Step 7 and Step 8. Measure the position adjustment distance of the anti-vibration strip 1 each time they are executed to ensure that the adjustment distances of the two anti-vibration strip legs are the same; until the adjustment is completed, Step 7 is executed 3 times and Step 8 is executed 3 times in total.

[0089] During and after the adjustment process, the overlapping condition between the anti-vibration strip and the heat exchange tube is detected by eddy current testing method. When the detected overlapping amount meets the requirements, it can be considered that the anti-vibration strip is adjusted to the optimal position and the adjustment is completed.

[0090] After the adjustment of the anti-vibration strip is completed, the surfaces of the relevant anti-vibration strip and the heat exchange tube are detected, and no scratches are found, which meets the quality requirements of nuclear power equipment. The time taken to adjust this anti-vibration strip is counted as 66 minutes. It can be seen that the anti-vibration strip insertion depth adjustment tool for nuclear power heat exchangers provided by the present application and the adjustment method using the same can quickly and efficiently adjust the anti-vibration strip insertion depth without damage.

[0091] The present invention has been described in combination with preferred embodiments above. However, these embodiments are merely exemplary and only serve an illustrative purpose. On this basis, various substitutions and improvements can be made to the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A tool for adjusting the insertion depth of anti-vibration bars of a nuclear power heat exchanger, characterized in that The anti-vibration strip (1) is in the shape of a long strip with a bent middle part; A transition arc is provided at the bent part; The adjustment tool (5) includes: a front end top block (2) and a connecting rod (3) connected thereto; On the bottom surface of the front end top block (2), there is an arc surface (21) located in the middle and flat surfaces (22) on both sides of the arc surface (21), and the arc surface (21) and the flat surface (22) are smoothly transitioned; The arc surface (21) can be embedded into the transition arc of the anti-vibration strip (1); A predetermined angle is formed between the two flat surfaces (22) on the bottom surface of the front end top block (2), and the predetermined angle is slightly smaller than or equal to the bending angle of the anti-vibration strip (1); The radius dimension of the arc surface (21) is slightly larger than the radius dimension of the transition arc.

2. The nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool according to claim 1, characterized in that The connecting rod (3) is located on one side of the front end top block (2), and the thickness and length dimensions of the front top block (2) enable it to be inserted into two adjacent anti-vibration strips (1) above and below.

3. The nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool according to claim 2, characterized in that The thickness of the front end top block (2) is greater than or equal to 2 mm, and is more than 2 mm smaller than the minimum distance between two adjacent anti-vibration strips (1) above and below.

4. The nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool according to claim 2, characterized in that In the area where the heat exchange tubes are arranged in an equilateral triangle, the width of the front end top block (2) is greater than or equal to 1.5 times the equilateral triangle pitch of the heat exchange tube arrangement, so that the adjustment tool (5) cannot be inserted into the distance between adjacent heat exchange tubes in the same row.

5. The nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool according to claim 1, characterized in that The length of the connecting rod (3) is greater than the leg length of the anti-vibration strip (1), Preferably, when the front end top block (2) is embedded into the bent part of the anti-vibration strip (1), the connecting rod (3) extends outwards by 100 - 500 mm relative to the anti-vibration strip (1).

6. A method for adjusting the insertion depth of vibration-resistant bars of a nuclear power heat exchanger, characterized in that, This method is realized by using the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool according to any one of claims 1 to 5.

7. The method for adjusting the insertion depth of the anti-vibration bars of the nuclear power heat exchanger according to claim 6, characterized in that, This method includes the following steps: Step 1, rotate the tube bundle assembly where the anti-vibration strip (1) is located so that the anti-vibration strip (1) to be adjusted is in a vertical state with the plane where the heat exchange tubes are located; Step 2, adjust the circumferential orientation of the tube bundle assembly so that the two leg ends of the anti-vibration strip (1) are in a relatively free state; Step 3, clean and protect against bumps on the heat exchange tube bundle; Step 4, mark the adjustment reference line on the end caps of the two legs of the anti-vibration strip (1); Step 5, insert the nuclear power heat exchanger anti-vibration strip insertion depth adjustment tool along one leg of the anti-vibration strip (1) to be adjusted to the working position, so that the arc surface (21) of the front end top block (2) of the adjustment tool abuts against the transition arc of the anti-vibration strip (1); Step 6, use a rubber hammer to strike the tail end of the connecting rod (3) of the adjustment tool so that the position of the anti-vibration strip (1) is adjusted by 3 - 5 mm each time; preferably, strike continuously 3 - 5 times each time; Step 7: Take out the adjustment tool, rotate the tube bundle assembly where the anti-vibration strip (1) is located by 180 degrees, and then insert the adjustment tool along the other leg of the anti-vibration strip (1) to be adjusted to the working position; Step 8: Use a rubber hammer to strike the end of the connecting rod (3) of the adjustment tool so that the position of the anti-vibration strip (1) is adjusted by 3-5 mm each time; preferably, strike continuously 3-5 times each time; Step 9: Repeat Step 7 and Step 8. Each time, measure the adjustment distance of the position of the anti-vibration strip (1) to ensure that the adjustment distances of the two legs of the anti-vibration strip are the same; until the adjustment is completed.

8. The method for adjusting the insertion depth of the anti-vibration bars of the nuclear power heat exchanger according to claim 7, wherein The method comprises the following steps: During and after the adjustment process, detect the overlapping condition of the anti-vibration strip and the heat exchange tube by eddy current testing method.

Images