Cutting tool for manual valve of a core flux measurement system and method of use

Abstract

The application relates to a cutting tool for a manual valve of a reactor core flux measurement system and a use method thereof, which comprises an annular main body, a plurality of clamping pieces, a moving assembly and a cutter. The cutting tool for the manual valve of the reactor core flux measurement system is used to cut off the manual valve, the guide pipe is clamped between the plurality of clamping pieces, a part of the protruding part far away from the reference surface is cut off first, the first distance from the one side of the remaining part of the protruding part away from the reference surface to the reference surface is measured, the cutting position for exposing the reference surface is determined according to the first distance and the second distance, the cutter is used to cut at the cutting position, and thus the protruding part is completely cut off. Then the sleeve part is cut off. The special-shaped port is entirely polished by using a manual polishing device, and is trimmed by using a manual file. The guide pipe is trimmed by using the cutter, and the original special-shaped bevel ring surface of the guide pipe is restored. Thus, the beneficial effects of reducing the work difficulty, simplifying the process and shortening the construction period can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of reactor in core flux measurement system, in particular to a cutting tool for a manual valve of a reactor in core flux measurement system and a method of using the same. BACKGROUND

[0002] The main function of the reactor in core flux measurement system (RIC) is to measure the neutron fluence rate in the core, and the purpose of the measurement is to establish the neutron fluence rate distribution map of the core and calibrate the out-of-core neutrons. The number of manual valves of the reactor in core flux measurement system of a single instrument unit is 50. The manual valves are welded to one end of the guide pipe. The space for replacing the manual valves is narrow.

[0003] The existing replacement equipment (FAMATON applied to French units) mainly cuts the guide pipe (as shown in Figure 1 ), directly discards the guide pipe, the manual valve and the sealing section after cutting, and then prefabricates a new manual valve and sealing section integrated piece, and lengthens the connection end of the manual valve and the guide pipe (as shown in Figure 2 ) to compensate for the length from the cutting point to the body of the manual valve, so as to realize the replacement of the manual valve, and finally ensure that the replaced manual valve is in the same horizontal position as other manual valves.

[0004] However, after the manual valve and part of the guide pipe are cut by the FAMATON, a compensation pipe 215 needs to be reprocessed for the cutting opening, and a weld is also added between the original guide pipe and the compensation pipe 215, so that the original design is changed, and then a design evaluation needs to be re-performed. The end of the newly added guide pipe connected with the manual valve is a special-shaped port which is difficult to process. Therefore, it can be seen that the replacement of the manual valve by using the FAMATON has a large work difficulty, a complex process, and a long construction period. SUMMARY

[0005] Therefore, it is necessary to provide a cutting tool for a manual valve of a reactor in core flux measurement system and a method of using the same in view of the problems of large work difficulty, complex process and long construction period caused by directly cutting part of the guide pipe and re-welding the compensation pipe connected with the replaced manual valve by using the existing manual valve replacement equipment.

[0006] An embodiment of the present application provides a cutting tool for a manual valve of a reactor in core flux measurement system, which is used for cutting off the manual valve installed at a special-shaped port of a guide pipe, and the cutting tool for the manual valve of the reactor in core flux measurement system comprises:

[0007] an annular main body;

[0008] a plurality of clamping pieces, the plurality of clamping pieces are uniformly arranged on the inner wall of the annular main body along the circumference of the annular main body, and the plurality of clamping pieces are movable along the radial direction of the annular main body;

[0009] A moving assembly is arranged on one axial side of the annular body and connected with the annular body and performs circumferential movement around the axis of the annular body.

[0010] A cutter is connected with the moving assembly, and the cutter is movable along the radial direction of the annular body.

[0011] The cutting tool of the manual valve of the core flux measurement system cuts the manual valve by the following steps:

[0012] The guide tube is clamped between the plurality of clamping members arranged uniformly along the circumferential direction of the annular body, so as to ensure that the guide tube is coaxial with the annular body, and further ensure that the moving assembly arranged on one axial side of the annular body and performing circumferential movement around the axis of the annular body can rotate around the axis of the guide tube, a part of the protruding portion away from the reference surface is cut first, so as to prevent the protruding portion from protruding along the axial direction of the guide tube and affecting subsequent measurement after cutting, and facilitate measurement of the first distance from the reference surface to the side of the remaining part of the protruding portion away from the reference surface.

[0013] The first distance from the reference surface to the side of the remaining part of the protruding portion away from the reference surface is measured, and the cutting position at which the reference surface is exposed is determined according to the first distance and a second distance, the cutter is used to cut at the cutting position, so as to completely cut the protruding portion. The second distance is the distance from the beveled annular surface to the reference surface. Then, the sleeve portion is cut using the cutter. The special-shaped port is polished in the whole circumference using a manual polishing device, and is trimmed using a manual file. The guide tube is trimmed using the cutter to restore the original special-shaped beveled annular surface of the guide tube. In this way, the cutting tool of the manual valve of the core flux measurement system finally achieves the beneficial effects of not needing to design, weld and evaluate a compensation tube, reducing the work difficulty, simplifying the process and shortening the construction period.

[0014] In an embodiment, the moving assembly comprises a moving ring connected with one side of the annular body and rotating around the axis of the annular body, and a mounting portion connected with the moving ring, and the cutter is connected with the mounting portion.

[0015] In an embodiment, the moving assembly further comprises a radial feed portion and an axial feed portion, and the radial feed portion and the axial feed portion are connected;

[0016] The radial feed portion is connected with the mounting portion, and the axial feed portion is connected with the cutter; or

[0017] The axial feed portion is connected with the mounting portion, and the radial feed portion is connected with the cutter.

[0018] In an embodiment, the cutting tool of the manual valve of the reactor core flux measurement system further comprises an axial cutting accessory connected with the mounting portion, the axial cutting accessory comprising an axial adjusting portion connected with the cutter near one end of the annular body and used for adjusting the position of the cutter along the axial direction of the annular body.

[0019] In an embodiment, the axial cutting accessory is provided with a protrusion near the side of the body along the radial direction of the annular body, the protrusion is provided with a through hole along the axial direction of the annular body, the axial adjusting portion is movably arranged in the through hole, the cutter is connected with the axial adjusting portion near one end of the annular body, and the cutting edge of the cutter faces the annular body along the axial direction of the annular body.

[0020] In an embodiment, the cutter comprises a cutting knife, a flat mouth knife and a forming knife, the cutting knife is detachably connected with the mounting portion, and the flat mouth knife and the forming knife are alternatively connected with the axial adjusting portion.

[0021] In an embodiment, the cutting tool of the manual valve of the reactor core flux measurement system further comprises a driving assembly, the driving assembly comprising:

[0022] a first driving portion arranged on the annular body and connected with the clamping piece to drive the clamping piece to move along the radial direction of the annular body;

[0023] a second driving portion arranged on the annular body and connected with the movable ring to drive the movable ring to rotate around the axial line of the annular body;

[0024] a third driving portion arranged on the annular body and connected with the axial adjusting portion to drive the axial adjusting portion to move along the axial direction of the annular body.

[0025] In an embodiment, the driving assembly is a pneumatic motor.

[0026] In an embodiment, the cutting tool of the manual valve of the reactor core flux measurement system further comprises a support frame, the support frame comprising: at least two support rods, at least two limiting portions, at least two telescopic rods, at least one limiting rod and at least two foot pads;

[0027] The two ends of the limiting rod are respectively connected with the side surfaces of the two support rods;

[0028] One end of the support rod is connected with the limiting portion, and the other end is connected with the telescopic rod;

[0029] The end of the telescopic rod away from the support rod is connected with the foot pad;

[0030] At least two of the limiting portions abut the outer circumferential surface of the annular body.

[0031] The application also provides a method for using the cutting tool for the manual valve of the reactor core flux measurement system. The cutting tool for the manual valve of the reactor core flux measurement system is used to cut off the manual valve installed at the special-shaped port of the guide tube. The manual valve comprises an integral protruding part and a sleeving part. The sleeving part is sleeved on the guide tube. The special-shaped end of the guide tube comprises an end face of the special-shaped end and a beveled annular surface. The outer diameter of the beveled annular surface is greater than that of the end face of the special-shaped end of the guide tube. The protruding part is located on the side of the reference surface away from the guide tube and protrudes from the outer circumferential surface of the guide tube in the radial direction of the guide tube. The method for using the cutting tool for the manual valve of the reactor core flux measurement system comprises the following steps:

[0032] The guide tube is clamped between the plurality of clamping members;

[0033] A part of the protruding part away from the reference surface is cut off first;

[0034] The first distance, which is the distance from the side of the remaining part of the protruding part away from the reference surface to the beveled annular surface, and the second distance, which is the distance from the beveled annular surface to the reference surface, are measured to determine the cutting position at which the reference surface is exposed;

[0035] The cutting tool is used to cut at the cutting position;

[0036] The sleeving part is cut off using the cutting tool;

[0037] The special-shaped port is polished around the whole circumference using a manual polishing device, and is trimmed using a manual file;

[0038] The guide tube is trimmed using the cutting tool to restore the original beveled annular surface of the guide tube.

[0039] When the cutting tool for the manual valve of the reactor core flux measurement system is used to cut off the manual valve, the guide tube is clamped between the plurality of clamping members uniformly arranged in the circumferential direction of the annular body, so that the guide tube is coaxial with the annular body, and the moving assembly arranged on the axial side of the annular body and moving around the axis of the annular body can rotate around the axis of the guide tube. A part of the protruding part away from the reference surface is cut off first, so that the protrusion of the protruding part in the axial direction of the guide tube does not affect the subsequent measurement after cutting, and the first distance from the side of the remaining part of the protruding part away from the reference surface to the reference surface is measured conveniently.

[0040] The first distance is the distance from the side of the remaining part of the protruding part away from the reference surface to the reference surface, and the second distance is the distance from the bevel ring surface to the reference surface. Then the sleeve part is cut off using the cutter. The special-shaped port is polished around using a manual polishing device, and is trimmed using a manual file. The guide tube is trimmed using the cutter to restore the original special-shaped bevel ring surface of the guide tube. In this way, the cutting tooling of the manual valve of the core flux measurement system finally achieves the beneficial effects of not needing to design, weld and evaluate the compensation tube, reducing the work difficulty, simplifying the process and shortening the construction period. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 A schematic diagram of replacing a manual valve of a Farmarong;

[0042] Figure 2 A structural diagram of a guide tube and an enlarged view of a broken part;

[0043] Figure 3 A structural diagram of the cutting tooling of the manual valve of the core flux measurement system of an embodiment;

[0044] Figure 4 An enlarged view of the annular body of the cutting tooling of the manual valve of the core flux measurement system of an embodiment;

[0045] Figure 5 An enlarged view of the annular body of the cutting tooling of the manual valve of the core flux measurement system of another embodiment;

[0046] Figure 6 A schematic diagram of the structure of a cutter;

[0047] Figure 7 A schematic diagram of a support frame of an embodiment;

[0048] Figure 8 A schematic diagram of step two;

[0049] Figure 9 A schematic diagram of the completion of step two cutting;

[0050] Figure 10 A schematic diagram of step four;

[0051] Figure 11 A schematic diagram of the completion of step four cutting;

[0052] Figure 12 A schematic diagram of step five;

[0053] Figure 13Schematic diagram for cutting completed for step five

[0054] Figure 14 Schematic diagram for step seven;

[0055] Figure 15 Schematic diagram for cutting completed for step seven.

[0056] Reference numerals:

[0057] 100 - cutting tool for manual valve of core flux measurement system

[0058] 110 - annular body

[0059] 120 - clamping member

[0060] 130 - moving assembly; 131 - moving ring; 132 - mounting portion; 133 - radial feed portion; 134 - axial feed portion

[0061] 140 - cutter; 141 - cutting edge end; 142 - cutting knife; 143 - flat knife; 144 - forming knife

[0062] 150 - axial cutting accessory; 151 - axial adjustment portion; 152 - protruding portion; 153 - through hole

[0063] 160 - driving assembly

[0064] 170 - support frame; 171 - support rod; 172 - limiting portion; 173 - telescopic rod; 174 - limiting rod; 175 - foot pad

[0065] 210 - guide pipe; 211 - special-shaped port; 212 - bevel; 213 - bevel annular surface; 214 - reference surface; 215 - compensation pipe

[0066] 220 - manual valve; 221 - protruding portion; 222 - sleeved portion; 223 - cutting position; 224 - annular boss

[0067] N - feed direction DETAILED DESCRIPTION

[0068] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0069] In the description of the application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0070] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0071] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0072] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0073] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a member is referred to as being "coupled" or "connected" to another member, it can be directly coupled or connected to the other member or intervening members can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0074] Reference will now be made to Figure 3 , Figure 4 and Figure 5 An embodiment of the present application provides a cutting tool 100 of a manual valve of a reactor core flux measurement system, which is used for cutting a manual valve 220 installed at a special-shaped port 211 of a guide tube 210. The cutting tool 100 of the manual valve of the reactor core flux measurement system comprises a ring-shaped main body 110, a plurality of clamping members 120, a moving assembly 130 and a cutter 140.

[0075] The plurality of clamping members 120 are uniformly arranged on the inner wall of the ring-shaped main body 110 along the circumferential direction of the ring-shaped main body 110 and can move along the radial direction of the ring-shaped main body 110. The moving assembly 130 is arranged on one axial side of the ring-shaped main body 110 and connected with the ring-shaped main body 110 and can make circumferential movement around the axis of the ring-shaped main body 110. The cutter 140 is connected with the moving assembly 130 and can move along the radial direction of the ring-shaped main body 110.

[0076] The manual valve 220 comprises an integral protruding portion 221 and a sleeving portion 222. The sleeving portion 222 is sleeved on the guide tube 210. The special-shaped end of the guide tube 210 comprises an end face of the special-shaped port 211 and a beveled annular surface 213. The outer diameter of the beveled annular surface 213 is greater than that of the end face of the special-shaped port 211 of the guide tube 210. The protruding portion 221 is located on the side away from the guide tube 210 of the reference surface 214 of the end face of the special-shaped port 211 and protrudes from the outer peripheral surface of the guide tube 210 along the radial direction of the guide tube 210.

[0077] The cutting tool 100 of the manual valve of the reactor core flux measurement system can achieve the cutting of the manual valve 220 through the following steps.

[0078] S 100: first, the plurality of clamping members 120 are moved radially along the annular body 110 away from the axis of the annular body 110, the guide tube 210 is clamped between the plurality of clamping members 120 uniformly arranged along the circumference of the annular body 110, the plurality of clamping members 120 are synchronously moved radially along the annular body, and close to the axis of the annular body 110, so as to ensure that the guide tube 210 is coaxial with the annular body 110, and further ensure that the moving assembly 130 arranged on the axial side of the annular body 110 and performing circumferential movement around the axis of the annular body 110 can rotate around the axis of the guide tube 210; S 200: using the cutter 140 to cut a part of the protruding portion 221 away from the reference surface 214, so as to prevent the protruding of the protruding portion 221 along the axis of the guide tube 210 from affecting the subsequent measurement, and facilitate the measurement of the first distance (not shown in the figure) from the side of the remaining part of the protruding portion 221 away from the reference surface 214 to the reference surface 214;

[0079] S 300: measuring the first distance, and determining the cutting position 223 for exposing the reference surface 214 according to the first distance and the second distance (not shown in the figure); S 400: using the cutter 140 to cut at the cutting position 223, so as to completely cut off the protruding portion 221. The first distance is the distance from the side of the remaining part of the protruding portion 221 away from the reference surface 214 to the reference surface 214, and the second distance is the distance from the bevel ring surface 213 to the reference surface 214; S 500: using the cutter 140 to cut off the sleeving portion 222; S 600: using a manual polishing device to polish the entire circumference of the special-shaped port 211, and cooperating with a manual file to finish. S 700: using the cutter 140 to finish the guide tube 210, and restore the original special-shaped bevel ring surface 213 of the guide tube 210. In this way, finally, the beneficial effects of not needing to design, weld and evaluate the compensating tube 215 to cut off the manual valve 220, reducing the work difficulty, simplifying the process, and shortening the construction period are achieved through the cutting tool 100 of the manual valve of the above-mentioned reactor core flux measurement system.

[0080] Please refer to Figure 3 and Figure 4 In an embodiment, the moving assembly 130 includes a movable ring 131 and a mounting portion 132, the movable ring 131 is connected with one side of the annular body 110 and rotates around the axis of the annular body 110, the mounting portion 132 is connected with the movable ring 131, and the cutter 140 is connected with the mounting portion 132, so that the cutter 140 is coaxially arranged with the annular body 110 and rotates around the axis of the annular body 110 through the movable ring 131, and the cutter 140 is connected with the movable ring 131 through the mounting portion 132, so that the cutter 140 can rotate along the axis of the annular body 110 when cutting the manual valve 220, so as to achieve the effect of cutting the manual valve 220.

[0081] Please refer to Figure 3 and Figure 4In an embodiment, the moving assembly 130 further comprises a radial feeding part 133 and an axial feeding part 134, the radial feeding part 133 and the axial feeding part 134 are connected, the radial feeding part 133 is connected with the mounting part 132, and the axial feeding part 134 is connected with the cutter 140. Thus, when cutting in S 200, S 400 and S 500, the cutter 140 can be radially fed and / or axially fed by the radial feeding part 133 and the axial feeding part 134, so as to realize the cutting of the convex part 221 and the step-by-step cutting of the sleeving part 222, and meanwhile, the position of the cutter 140 can be adjusted in S 700 to realize the trimming of the special-shaped port 211 of the guide pipe 210.

[0082] In another embodiment, the axial feeding part 134 is connected with the mounting part 132, and the radial feeding part 133 is connected with the cutter 140.

[0083] Please refer to Figure 3 , Figure 4 and Figure 5 In an embodiment, the cutting tool 100 of the manual valve of the reactor core flux measurement system further comprises an axial cutting accessory 150, the axial cutting accessory 150 is connected with the mounting part 132, and the axial cutting accessory 150 comprises an axial adjusting part 151, the axial adjusting part 151 is connected with the cutter 140 near one end of the annular body 110 and is used for adjusting the position of the cutter 140 along the axis of the annular body 110, so that the cutter 140 can be installed by the axial cutting accessory 150 and moved along the axis of the annular body 110, and the sleeving part 222 can be cut and the guide pipe 210 can be trimmed by using the cutter 140, so as to restore the original bevel annular surface 213 of the guide pipe 210.

[0084] Please refer to Figure 3 , Figure 4 and Figure 5 Specifically, the axial cutting accessory 150 is provided with a convex part 152 near the side of the axis of the annular body 110 in the radial direction of the annular body 110, the convex part 152 is provided with a through hole 153 in the axial direction of the annular body 110, the axial adjusting part 151 is movably arranged in the through hole 153, and the axial adjusting part 151 is connected with the cutter 140 near one end of the annular body 110. Thus, the cutter 140 can be movably arranged in the through hole 153 in the axial direction of the annular body 110 by the axial adjusting part 151, the cutter 140 can be moved along the axis of the annular body 110, and meanwhile, the cutting edge end 141 of the cutter 140 can be directed to the annular body 110 in the axial direction of the annular body 110, so as to cut the sleeving part 222 and trim the guide pipe 210 by the axial feeding of the cutter 140 in S 700.

[0085] and Figure 6In an embodiment, the cutter 140 comprises a cutting-off cutter 142, a flat cutter 143, and a shaping cutter 144. The cutting-off cutter 142 is detachably connected to the mounting portion 132, the flat cutter 143 and the shaping cutter 144 are alternatively connected to the axial adjusting portion 151.

[0086] Please refer to Figure 4 , Figure 8 , Figure 9 , Figure 10 and Figure 11 , when cutting the protruding portion 221 away from the reference surface 214 and at the cutting position 223, the cutting-off cutter 142 is connected to the axial feeding portion 134, the radial feeding portion 133 is connected to the mounting portion 132, and the radial feeding portion 133 is connected to the axial feeding portion 134, so that the cutting-off cutter 142 can be fed in the axial direction of the annular body 110 and in the radial direction of the annular body 110, thereby achieving the cutting-off of the protruding portion 221 in S 200 and S 300.

[0087] Please refer to Figure 5 , Figure 12 and Figure 13 , when cutting the protruding portion 221 away from the reference surface 214 and at the cutting position 223, the cutting-off cutter 142 is connected to the axial feeding portion 134, the radial feeding portion 133 is connected to the mounting portion 132, and the radial feeding portion 133 is connected to the axial feeding portion 134, so that the cutting-off cutter 142 can be fed in the axial direction of the annular body 110 and in the radial direction of the annular body 110, thereby achieving the cutting-off of the protruding portion 221 in S 200 and S 300.

[0088] Please refer to Figure 5 , Figure 12 and Figure 13 , due to the structural limitation of the flat cutter 143, after the manual valve 220 is cut by the flat cutter 143 in S 500, the annular boss 224 still exists at the bevel surface 213, so it is necessary to use a manual polishing device to polish the entire profiled port 211 in S 600, and cooperate with a manual file to finish.

[0089] Please refer to Figure 14 and Figure 15Since the groove 212 of the groove ring surface 213 needs to be restored, the flat knife 143 needs to be disassembled and connected with the axial adjusting part 151, so that the cutting edge of the forming knife 144 is axially directed to the annular body 110, the axial position of the forming knife 144 relative to the annular body 110 is adjusted by the axial adjusting part 151, the axial cutting accessory 150 is connected with the movable ring 131 through the mounting part 132, so that the axial position of the forming knife 144 relative to the annular body 110 is advanced by the axial adjusting part 151, and at the same time, the axial cutting accessory 150 can also make circumferential motion around the annular body 110. In S 700, the annular boss 224 of the guide pipe 210 and the manual valve 220 connected weld position is removed in excess by using the forming knife 144 to axially continuously advance with the guide pipe 210 end surface as the reference surface 214, radial adjustment is performed multiple times, and the guide pipe 210 original groove 212 and the groove ring surface 213 are restored by combining with the manual file finishing.

[0090] In another embodiment, the cutting-off knife 142 is connected with the radial advancing part 133, the axial advancing part 134 is connected with the mounting part 132, and the radial advancing part 133 is connected with the axial advancing part 134 in S 200 and S 400, so that the cutting-off knife 142 can be axially advanced and radially advanced along the annular body 110, thereby realizing cutting off the protruding part 221.

[0091] Specifically, the forming knife 144 is a 20° forming knife 144, so that the groove 212 and the axis of the guide pipe 210 form an angle of 20°.

[0092] Preferably, the flat knife 143 and the forming knife 144 are alternatively connected with the axial adjusting part 151, the axial adjusting part 151 is movably arranged in the through hole 153 of the axial cutting accessory 150 along the axial direction of the annular body 110, so that the cutting edge of the flat knife 143 or the forming knife 144 is axially directed to the annular body 110, the axial position of the flat knife 143 relative to the annular body 110 is adjusted by the axial adjusting part 151, the axial cutting accessory 150 is connected with the mounting part 132 through the radial advancing part 133 and the axial advancing part 134, the mounting part 132 is connected with the movable ring 131, so that the axial position of the flat knife 143 relative to the annular body 110 is advanced by the axial adjusting part 151, and at the same time, the axial cutting accessory 150 can also make circumferential motion around the annular body 110, and the radial advancing part 133 and the axial advancing part 134 can also be used for secondary adjustment.

[0093] and Figure 3In an embodiment, the cutting tool 100 of the manual valve of the reactor core flux measurement system further comprises a driving assembly 160, which comprises a first driving part (not shown), a second driving part (not shown) and a third driving part (not shown). The first driving part is arranged on the annular body 110 and connected with the clamping member 120 to drive the clamping member 120 to move along the radial direction of the annular body 110. The second driving part is arranged on the annular body 110 and connected with the movable ring 131 to drive the movable ring 131 to rotate around the axis of the annular body 110. The third driving part is arranged on the annular body 110 and connected with the axial adjusting part 151 to drive the axial adjusting part 151 to move along the axial direction of the annular body 110. Thus, by arranging the first driving part, the second driving part and the third driving part on the clamping member 120, the movable ring 131 and the axial adjusting part 151 respectively, the automatic installation and cutting of the cutting tool 100 of the manual valve of the reactor core flux measurement system are realized.

[0094] Preferably, the driving assembly 160 further comprises a fourth driving part (not shown) and a fifth driving part (not shown). The fourth driving part is arranged on the annular body 110 and connected with the radial feeding part 133 to drive the radial feeding part 133 to move along the radial direction of the annular body 110. The fifth driving part is arranged on the annular body 110 and connected with the axial feeding part 134 to drive the axial feeding part 134 to move along the axial direction of the annular body 110. The fourth driving part and the fifth driving part drive the radial feeding part 133 and the axial feeding part 134 respectively to drive the cutter 140 to move along the radial direction of the annular body 110 and along the axial direction of the annular body 110, so as to realize the automatic cutting of the manual valve 220.

[0095] In an embodiment, the driving assembly 160 is a pneumatic motor.

[0096] In another embodiment, the driving assembly 160 is an electric motor.

[0097] Please refer to Figure 7In an embodiment, the cutting tool 100 of the manual valve of the reactor core flux measurement system further comprises a support frame 170, which comprises at least two support rods 171, at least two limiting parts 172, at least two telescopic rods 173, at least one limiting rod 174, and at least two foot pads 175. The two ends of the limiting rod 174 are respectively connected with the side faces of the two support rods 171, one end of the support rod 171 is connected with the limiting part 172, and the other end is connected with the telescopic rod 173. The end of the telescopic rod 173 away from the support rod 171 is connected with the foot pad 175, and the at least two limiting parts 172 abut against the outer circumferential surface of the annular body 110. Thus, through the support frame 170, the foot pad 175 is in contact with the ground, and the limiting part 172 abuts against the outer circumferential surface of the annular body 110, the support of the annular body 110 by the support frame 170 is realized, and the telescopic rod 173 is provided, so that the support frame 170 can be adjusted according to the height of the guide pipe 210, so as to realize the repeated use in multiple scenes.

[0098] Preferably, the support frame 170 comprises three support rods 171, three limiting parts 172, three telescopic rods 173, three limiting rods 174, and three foot pads 175, so that the support frame 170 has a triangular structure, and the support of the annular body 110 is more stable.

[0099] In other embodiments, the number of support rods 171, limiting parts 172, telescopic rods 173, limiting rods 174, and foot pads 175 can also be four or five.

[0100] An embodiment of the present application also provides a use method of the cutting tool 100 of the manual valve of the reactor core flux measurement system. The cutting tool 100 of the manual valve of the reactor core flux measurement system is used to cut the manual valve 220 installed at the special-shaped port 211 of the guide pipe 210. The manual valve 220 comprises an integral protruding part 221 and a sleeving part 222, and the sleeving part 222 is sleeved on the guide pipe 210. The special-shaped end of the guide pipe 210 comprises an end face of the special-shaped port 211 and a bevel ring surface 213, and the outer diameter of the bevel ring surface 213 is greater than that of the end face of the special-shaped port 211 of the guide pipe 210. The protruding part 221 is located on the side away from the guide pipe 210 of the reference surface 214 of the end face of the special-shaped port 211 of the guide pipe 210 and protrudes from the outer circumferential surface of the guide pipe 210 in the radial direction of the guide pipe 210. The use method of the cutting tool 100 of the manual valve of the reactor core flux measurement system comprises the following steps:

[0101] S 100: Clamping the guide pipe 210 between the plurality of clamping members 120.

[0102] S 200: Cutting a part of the protruding part 221 away from the reference surface 214.

[0103] S 300: measure the first distance, and determine the cutting position 223 that exposes the reference surface 214 according to the first distance and the second distance, wherein the first distance is the distance from the side of the remaining part of the protruding part 221 away from the reference surface 214 to the bevel ring surface 213, and the second distance is the distance from the bevel ring surface 213 to the reference surface 214.

[0104] S 400: use the cutter 140 to cut at the cutting position 223.

[0105] S 500: use the cutter 140 to cut off the sleeving part 222.

[0106] S 600: use a manual polishing device to polish the special-shaped port 211 around the whole circumference, and cooperate with a manual file to finish.

[0107] S 700: use the cutter 140 to finish the guide pipe 210, and restore the original bevel ring surface 213 of the guide pipe 210.

[0108] The cutting tool 100 for the manual valve of the reactor core flux measurement system is used to cut off the manual valve 220, and the above-mentioned method for using the cutting tool 100 for the manual valve of the reactor core flux measurement system is adopted, S 100: the guide pipe 210 is clamped between the plurality of clamping members 120 uniformly arranged along the circumferential direction of the annular body 110, so as to ensure that the guide pipe 210 is coaxial with the annular body 110, and further ensure that the moving assembly 130 arranged on the axial side of the annular body 110 and performing circumferential movement around the axis of the annular body 110 can rotate around the axis of the guide pipe 210; S 200: use the cutter 140 to cut a part of the protruding part 221 away from the reference surface 214, so as to prevent the protrusion of the protruding part 221 along the axial direction of the guide pipe 210 from affecting the subsequent measurement, and facilitate the measurement of the first distance (not shown in the figure) from the side of the remaining part of the protruding part 221 away from the reference surface 214 to the reference surface 214.

[0109] S 300: measuring the first distance, and determining the cutting position 223 for exposing the reference surface 214 according to the first distance and a second distance (not shown in the figure), S 400: cutting at the cutting position 223 using the cutter 140, so as to completely cut off the protruding part 221. Wherein, the first distance is the distance from the side of the remaining part of the protruding part 221 away from the reference surface 214 to the reference surface 214, and the second distance is the distance from the bevel ring surface 213 to the reference surface 214; S 500: cutting off the sleeving part 222 using the cutter 140; S 600: performing whole-round polishing on the special-shaped port 211 using a manual polishing device, and cooperating with a manual file to finish. S 700: using the cutter 140 to finish the guide pipe 210, and restoring the original special-shaped bevel ring surface 213 of the guide pipe 210. In this way, finally, the beneficial effects of not needing to design, weld and evaluate the compensating pipe 215 to cut off the manual valve 220, reducing the work difficulty, simplifying the process, and shortening the construction period are achieved through the cutting tool 100 of the manual valve of the above-mentioned reactor core flux measuring system.

[0110] The technical features of the above-mentioned embodiments can be combined in any manner. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not contradict, they should be considered as the scope of the present disclosure.

[0111] The above-mentioned embodiments only express several implementation manners of the present disclosure, and the description is relatively specific and detailed, however, it should not be understood as the limitation on the scope of the patent. It should be pointed out that, for the ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure should be subject to the appended claims.

Claims

1. A cutting tool for a manual valve of a core flux measurement system, for cutting off a manual valve installed at a special-shaped end of a guide tube, the manual valve comprising an integral protruding portion and a sleeve portion, the sleeve portion being sleeved on the guide tube, the special-shaped end of the guide tube comprising an end face of the special-shaped end and a groove annular surface, the outer diameter of the groove annular surface being larger than the outer diameter of the end face of the special-shaped end of the guide tube; with the end face of the special-shaped end of the guide tube as a reference plane, the protruding portion is located on a side of the reference plane away from the guide tube and protrudes from the outer circumference of the guide tube in a radial direction of the guide tube; a first distance is a distance from a side of the remaining portion of the protruding portion facing away from the reference plane to the groove annular surface, and a second distance is a distance from the groove annular surface to the reference plane; a cutting position is a position determined by the first and second distances to expose the reference plane; It is characterized by: The cutting tool for the manual valve of the core flux measurement system includes: annular body; A plurality of clamping members, wherein the plurality of clamping members are evenly arranged on the inner wall of the annular body along the circumference of the annular body, and the plurality of clamping members are movable along the radial direction of the annular body; A moving assembly, the moving assembly comprising a moving ring and a mounting portion, the moving ring being connected to one side of the annular body and rotating around the axis of the annular body, and the mounting portion being connected to the moving ring; Cutting tools, including: cutting knives, flat blade knives, forming knives; an axial cutting accessory connected to the mounting portion, the axial cutting accessory including an axial adjustment portion; The cutting knife is detachably connected to the mounting portion; the cutting knife is used to cut a portion of the protruding portion away from the reference surface; the cutting knife is used to cut the cutting position; the flat blade is used to cut off the sleeve portion; and the shaping blade is used to trim the guide tube. The forming knife can move radially along the annular body, so that the forming knife is continuously fed axially with the end surface of the guide tube as the reference plane, and the annular boss at the position of the weld connecting the guide tube and the manual valve is removed, and radial adjustment is performed multiple times; the end of the axial adjustment portion close to the annular body is connected to the flat blade knife or the forming knife and is used to adjust the axial position of the flat blade knife or the forming knife along the annular body; A drive assembly, the drive assembly includes: a first drive part, a second drive part and a third drive part; the first drive part is arranged on the annular body and connected to the clamping member to drive the clamping member to move radially along the annular body; the second drive part is arranged on the annular body and connected to the movable ring to drive the movable ring to rotate around the axis of the annular body; the third drive part is arranged on the annular body and connected to the axial adjustment part to drive the axial adjustment part to move axially along the annular body.

2. The cutting tool for the manual valve of the core flux measurement system according to claim 1, characterized in that: The moving assembly further includes a radial feed portion and an axial feed portion, wherein the radial feed portion is connected to the axial feed portion; The radial feed portion is connected to the mounting portion, and the axial feed portion is connected to the cutting knife, the flat knife or the forming knife; or The axial feeding portion is connected to the mounting portion, and the radial feeding portion is connected to the cutting knife, the flat knife or the forming knife.

3. The cutting tool for the manual valve of the core flux measurement system according to claim 1, characterized in that: The axial cutting attachment is provided with a protrusion along the radial direction of the annular body close to the axis of the annular body, and the protrusion is provided with a through hole along the axial direction of the annular body. The axial adjustment part is movably arranged in the through hole, and the end of the axial adjustment part close to the annular body is connected to the flat-blade knife or the forming knife, and the blade end of the flat-blade knife or the forming knife is facing the annular body along the axial direction of the annular body.

4. The cutting tool for the manual valve of the core flux measurement system according to claim 1, characterized in that: The driving assembly is a pneumatic motor.

5. The cutting tool for the manual valve of the core flux measurement system according to claim 1, characterized in that: The cutting tool of the manual valve of the core flux measurement system further includes a support frame, which includes: at least two support rods, at least two limit parts, at least two telescopic rods, at least one limit rod and at least two foot pads; The two ends of the limiting rod are respectively connected to the side surfaces of the two support rods; One end of the support rod is connected to the limiting portion, and the other end is connected to the telescopic rod; One end of the telescopic rod away from the support rod and the foot pad; At least two of the limiting portions abut against the outer circumferential surface of the annular body.

6. A method for using a cutting tool for a manual valve of a core flux measurement system, wherein the cutting tool for the manual valve of a core flux measurement system according to any one of claims 1 to 5 is used to cut off the manual valve installed at the special-shaped end of the guide tube, the manual valve comprising an integral protruding portion and a sleeve portion, the sleeve portion being sleeved on the guide tube, the special-shaped end of the guide tube comprising an end face of the special-shaped end and a groove annular surface, the outer diameter of the groove annular surface being larger than the outer diameter of the end face of the special-shaped end of the guide tube; taking the end face of the special-shaped end of the guide tube as a reference plane, the protruding portion is located on a side of the reference plane away from the guide tube and protrudes from the outer peripheral surface of the guide tube along the radial direction of the guide tube; characterized in that The method for using the cutting tool of the manual valve of the core flux measurement system comprises the following steps: clamping the guide tube between the plurality of clamping members; First, cutting a portion of the protruding portion away from the reference surface; Measuring a first distance, and determining a cutting position capable of exposing the reference surface based on the first distance and a second distance, wherein the first distance is the distance from a side of the remaining portion of the protruding portion facing away from the reference surface to the groove annular surface, and the second distance is the distance from the groove annular surface to the reference surface; Using the cutting knife to cut at the cutting position; Using the flat-blade knife to cut off the sleeve portion; The special-shaped port is polished all around by a manual polishing device and trimmed with a manual file; The forming knife is used to trim the guide tube to restore the original groove annular surface of the guide tube.

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