C-shaped heat transfer elbow detection system and application method thereof

Abstract

The invention discloses a C-shaped heat transfer elbow detection system and an application method thereof, and the system comprises a detection platform which comprises a positioning detection platform and two mobile detection platforms which are arranged side by side at the two sides away from the positioning platform; a plurality of clamping structures are arranged on the mobile detection plane and are used for clamping the C-shaped heat transfer elbow; the detection platform adjusting mechanism comprises a longitudinal adjusting device, a transverse adjusting device, a levelness adjusting device and a transverse driving device, and the longitudinal adjusting device and the transverse adjusting device extend in the horizontal direction and are perpendicular to each other; the levelness adjusting device is arranged between the longitudinal adjusting device and the transverse adjusting device and used for adjusting the levelness of the transverse adjusting device. The transverse driving device is arranged on the transverse adjusting device; and the detection mechanism is used for detecting the size and the shape of the C-shaped heat transfer elbow. The device has the beneficial effects that the structure is simple, the size and the shape of the C-shaped heat transfer tube can be simultaneously detected, and the appearance and the surface of the C-shaped tube are not damaged.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe system detection devices, and relates to a C-shaped heat transfer elbow detection system and an application method thereof, in particular to a C-shaped heat transfer elbow detection system for a steam generator and an application method thereof. Background Technique

[0002] As the core component of a steam generator, the heat transfer tubes of the steam generator play an important role in transferring the heat of the primary circuit to the secondary circuit to achieve water vaporization. Their size and shape design directly determine key parameters such as the heat transfer area, flow resistance, thermal stress distribution, and vibration resistance. To ensure efficient heat transfer, guarantee operation safety and stability, and further extend the service life of the equipment, relatively strict requirements are imposed on the size and shape accuracy of the heat transfer tubes.

[0003] Currently, the heat transfer tubes of steam generators generally adopt a U-shaped structure design, which has been widely used due to its advantages in space utilization and thermal expansion adaptability. To further improve performance and reduce the backflow phenomenon of steam generators, a new type of C-shaped structure heat transfer tube has been proposed in recent years, as shown below Figure 8 , and the tube bundle of each steam generator consists of two 90° elbows with the same bend radius + more than 100 kinds of tubes with different crossbeam lengths.

[0004] When detecting the size and shape of a U-shaped heat transfer tube, the traditional method usually uses a U-shaped groove flat plate with the bent tube area and about 50 mm cross beam segments adjacent to the tangent points dug out, and uses corresponding measuring tools to assist in detecting the size (bending radius, distance between two straight leg segments, cross beam segment length) and shape (profile, flatness, etc.) of the bent tube. However, for a C-shaped tube, it is obviously inappropriate to use a flat plate with a C-shaped groove dug out. The main reason is that its cross beam is relatively long, resulting in a significant increase in the manufacturing difficulty of large-sized flat plates. In addition, considering the large number of flat plates to be manufactured, the detection cost is also high. If a flat plate with two 90° bent tubes is used for detecting the bending radius of the bent tube, only two flat plates need to be made, and the operation is convenient. However, since the tangent point position of the bent tube cannot be determined, the length of the straight leg segment, the distance between the two straight leg segments, and the flatness cannot be accurately measured, making it difficult to meet the detection requirements. Therefore, developing a more efficient and accurate detection method has become one of the key research directions. The utility model patents with publication numbers CN 204286270 U "Bent Tube Detection Platform" and CN 206556566 U "A Bent Tube Detection Platform" and CN 117739776 A "A Tool for Detecting Brake Bent Tubes of Railway Freight Cars" are only applicable to the profile detection of small-sized bent tubes. Since the tangent point position of the bent tube cannot be accurately located, the length of the straight leg segment, the distance between the two straight leg segments, and the flatness cannot be detected, so they are not applicable. Although the invention with publication number CN 118482765 A "A Bent Tube Detection Device" can detect the profile, bending radius, and distance between two straight leg segments of the bent tube, the flatness cannot be detected. And if this detection method is adopted, due to the special shape of the C-shaped tube and the relatively long cross beam segment, the length can reach 3 m or more. On the one hand, the measurement process is extremely likely to cause deformation of the C-shaped tube. On the other hand, there is a risk of surface damage to the C-shaped tube at the clamping position. Summary of the Invention

[0005] In order to overcome the above defects in the prior art, the present invention provides a size and shape detection platform for a C-shaped heat transfer tube of a steam generator. The detection system has a simple structure, will not cause deformation and surface damage of the C-shaped tube, can not only detect the profile, bending radius, and distance between two straight leg segments of the bent tube, but also can detect the flatness of the C-shaped bent tube, and is applicable to the detection of batch bent tubes of various models, especially applicable to the size and shape detection of C-shaped tubes.

[0006] The technical solution adopted by the present application to solve the above problems is as follows: A C-shaped heat transfer bent tube detection system of the present invention includes: A detection platform, including a positioning detection table and two moving detection tables respectively arranged side by side on the left and right sides far away from each other of the positioning detection table; a plurality of clamping structures are arranged on the moving detection plane for clamping the C-shaped heat transfer bent tube; The detection platform adjusting mechanism includes a longitudinal adjusting device, a transverse adjusting device, a level adjusting device, and a transverse driving device. The longitudinal adjusting device and the transverse adjusting device both extend in the horizontal direction and are perpendicular to each other. The level adjusting device is arranged between the longitudinal adjusting device and the transverse adjusting device and is used to adjust the level of the transverse adjusting device. The transverse driving device is arranged on the transverse adjusting device and is connected to the mobile detection table, and is used to drive the two mobile detection tables to approach or move away from each other transversely; and A detection mechanism for detecting the size and shape of a C-shaped heat transfer elbow pipe.

[0007] Preferably, the C-shaped heat transfer elbow pipe includes a cross beam section and two straight leg sections. The two straight leg sections are connected to the cross beam section through two elbow radius elbows. The elbow radius elbow is a 90° elbow. The size of the C-shaped heat transfer elbow pipe at least includes the distance between the two straight leg sections and the length of the straight leg section. The shape of the C-shaped heat transfer elbow pipe at least includes profile and flatness.

[0008] Preferably, the positioning detection table includes a positioning frame and a positioning detection flat plate arranged on the positioning frame. The positioning detection flat plate has a positioning plane. The mobile detection table includes a mobile frame and a mobile detection flat plate arranged on the mobile frame. The mobile detection flat plate has a mobile detection plane. The positioning plane and the mobile detection plane jointly define a detection surface. The positioning plane and the mobile detection plane of the present application are relatively independent, but the positioning plane and the mobile detection plane are always coplanar. The mobile detection plane can move left and right relative to the positioning plane under the drive of the transverse driving device, so as to adjust the length of the detection surface in the transverse direction, so as to adapt to C-shaped heat transfer elbow pipes of different lengths.

[0009] Preferably, the longitudinal adjusting device includes a pair of longitudinal slide rails. The longitudinal slide rails extend in the horizontal direction and are parallel to each other. At least one longitudinal slider adapted thereto and movable along the longitudinal slide rail is respectively installed on each longitudinal slide rail. The longitudinal slider is connected to the transverse adjusting device through the level adjusting device and is used to adjust the longitudinal position of the transverse adjusting device.

[0010] Preferably, the transverse adjusting device is located above the longitudinal adjusting device and includes a pair of transverse slide rails. A plurality of connecting beams are connected between the two transverse slide rails. The two transverse slide rails extend in the horizontal direction and are parallel to each other. At the same time, the transverse slide rails are perpendicular to the longitudinal slide rails. At least two transverse sliders adapted thereto and movable along the transverse slide rails are respectively installed on each transverse slide rail. The transverse slider is connected to the mobile detection table.

[0011] Preferably, in the present application, the levelness adjusting device includes an upper connecting plate and a lower connecting plate which are arranged oppositely up and down. The lower connecting plate is fixedly connected to the longitudinal slider, and an inclination adjusting assembly is provided on the lower connecting plate. The upper connecting plate is fixedly connected to the transverse adjusting device through a connecting column, and an inclination adjusting assembly for adjusting the inclination angle of the upper connecting plate is arranged between the upper connecting plate and the lower connecting plate.

[0012] Preferably, in the present application, there are two sets of the transverse driving devices, which are symmetrically arranged at both ends of the transverse slide rail. Each set of the transverse driving devices includes a transverse screw rod and an adjusting nut. The transverse screw rod is rotatably arranged on the connecting beam through a support seat, and the adjusting nut is fixedly arranged on the moving detection table. The adjusting nut has a threaded hole for screwing with the transverse screw rod. When it is necessary to adjust the length of the detection platform, only need to rotate the transverse screw rod. During the rotation of the transverse screw rod, the adjusting nut is driven to move transversely, thereby driving the fixedly connected moving detection table to move transversely, and then adjusting the transverse length of the entire detection platform to adapt to C-shaped heat transfer bent pipes with different crossbeam lengths.

[0013] Preferably, in the present application, the multiple clamping structures are divided into two groups, where: the first group of clamping structures are arranged at intervals transversely and are used to jointly clamp the crossbeam section of the C-shaped heat transfer bent pipe. The second group of clamping structures on each moving detection table are arranged at intervals longitudinally, and the second group of clamping structures on the two moving detection tables correspond to each other one by one and are aligned left and right transversely, and are used to respectively clamp the two straight leg sections of the C-shaped heat transfer bent pipe.

[0014] Preferably, in the present application, the clamping structures are the same in structure and each includes a guide rail arranged on the moving detection table, a sliding block slidably arranged on the guide rail, and a clamping part arranged on the sliding block. A clamping groove is provided on the clamping part, and the bottom surfaces of the clamping grooves are located on the same horizontal plane, and the clamping grooves jointly define a C-shaped clamping path, and the clamping path is used to detect the shape of the C-shaped heat transfer bent pipe.

[0015] Preferably, in the present application, the clamping part includes a clamping base and a claw arranged on the clamping base. The clamping base is fixedly arranged on the sliding block; the claw is provided with a clamping groove.

[0016] Preferably, in the present application, the clamping groove is a rectangular open groove, which facilitates the insertion and removal of the C-shaped heat transfer bent pipe.

[0017] Preferably, in the present application, the guide rails of the first group of clamping structures are arranged longitudinally, and the guide rails of the second group of clamping structures are arranged transversely.

[0018] The C-shaped heat transfer elbow pipe detection system described in the present invention further includes a positioning and adjusting mechanism for adjusting the positions of the respective clamping structures.

[0019] Preferably in this application, the positioning and adjusting mechanism includes several reference holes arranged longitudinally at intervals on the positioning detection table and a positioning detection reference block detachably inserted into any one of the reference holes on the positioning detection table. The top of the positioning detection reference block is provided with a horizontal support plane and a vertical limiting surface. When the positioning detection reference block is inserted into the reference hole, the horizontal support plane and the bottom surface of the clamping groove are on the same horizontal plane.

[0020] The C-shaped heat transfer elbow pipe detection system described in the present invention further includes a level detection mechanism arranged on the detection platform for detecting the level of the detection platform.

[0021] Preferably in this application, the level detection mechanism includes a connecting frame and a level arranged on the connecting frame. The level of the detection surface can be conveniently detected through the level.

[0022] Preferably in this application, the detection mechanism can be an artificial measurement device, such as a magnesium-aluminum straightedge, a feeler gauge, a length vernier caliper, etc., or an automatic ranging device, such as a laser rangefinder, etc.

[0023] The present invention also provides an application method of a C-shaped heat transfer elbow pipe detection system, including the following steps: Step 1: Install the two mutually parallel longitudinal slide rails of the longitudinal adjusting device on an installation surface, adjust the height and level of the detection platform through the detection platform adjusting mechanism, and ensure that the detection surface of the entire detection platform is in a horizontal state; Step 2: Use the positioning mechanism to position the multiple clamping structures on the moving detection table. The centers of the clamping grooves of each clamping structure in the first group are on the same horizontal line transversely, and the center lines of the guide rails of the two clamping structures aligned left and right transversely in the second group are on the same vertical line longitudinally, so that the multiple clamping structures jointly define a clamping path for clamping the C-shaped heat transfer elbow pipe; Step 3: According to the inner spacing between the two straight leg sections of the C-shaped heat transfer elbow pipe specified in the technical requirements, use the transverse driving device to adjust the positions of the two moving detection platforms, and use the positioning and adjusting mechanism to adjust the positions of the clamping structures in the second group, so that the minimum distance between the side edges of each clamping groove of the clamping structures in the second group close to the positioning detection table and the centers of the positioning reference holes on the positioning detection table aligned with them transversely is half of the inner spacing between the two straight leg sections; Step 4: Place the C-shaped heat transfer bent pipe to be measured in the clamping path, and determine whether the contour of the C-shaped heat transfer bent pipe is qualified according to the placement of the C-shaped heat transfer bent pipe to be measured; if the C-shaped heat transfer pipe is placed in the clamping path in a free state, the contour of the C-shaped pipe is qualified, otherwise it is unqualified; the free state of the C-shaped heat transfer pipe is the state in which the C-shaped heat transfer pipe is not under any external force. Step 5: Use the detection mechanism to obtain the dimensional data of the C-shaped heat transfer bent pipe, and then calculate the straightness of the straight leg section of the C-shaped heat transfer bent pipe, the parallelism of the two straight leg sections, and the flatness of the C-shaped heat transfer bent pipe according to the dimensional data.

[0024] In Step 5, the dimensional data includes the gap between the straight leg section of the C-shaped heat transfer bent pipe and the clamping groove of each clamping structure, the maximum gap value between the C-shaped heat transfer bent pipe and the detection plane, and the bend radius.

[0025] Compared with the prior art, the beneficial effects of the present application are: 1. It can provide a large-area detection platform, which is convenient for measuring large-size C-shaped heat transfer pipes, especially suitable for C-shaped heat transfer pipes with a long crossbeam length; 2. It can simultaneously detect the dimensions (spacing between the two straight leg sections, length of the straight leg section) and shape (contour and flatness of the C-shaped heat transfer bent pipe) of the C-shaped heat transfer pipe, and the operation is convenient; 3. The two transverse linear guides of the transverse adjustment device and the transverse screw of the transverse drive device are mechanically connected to form an integral body, which not only has simple power transmission, but also can ensure that the positioning detection table and the moving detection table of the detection platform are on the same plane. With the help of the level on the positioning detection table, the levelness of the entire detection surface can be ensured; 4. The spacing between the two straight leg sections and the length of the straight leg section of the C-shaped pipe, which were originally difficult to measure, can obtain actual measurement values with the help of the clamping jaws and the feeler gauge, solving the problem of difficult traditional measurement; 5. It can be applied to the size and shape measurement of C-shaped bent pipes with different bend radii and different crossbeam lengths by adjusting the position of the clamping jaws on the detection platform. It has a wide range of applications, convenient operation, high detection accuracy, and the actual measurement accuracy can reach ±0.1 mm. Description of the Drawings

[0026] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0027] Figure 2 It is Figure 1 a partial enlarged view of

[0028] Figure 3 It is a front view of an embodiment of the present invention.

[0029] Figure 4 It is a front view of an embodiment of the present invention.

[0030] Figure 5 Left view of an embodiment of the present invention.

[0031] Figure 6 Schematic structural diagram of a clamping structure of an embodiment of the present invention.

[0032] Figure 7 Schematic structural diagram of a positioning and detecting reference block of an embodiment of the present invention.

[0033] Figure 8 Schematic structural diagram of a C-shaped heat transfer tube bundle.

[0034] Figure 9 Measuring schematic diagram of a C-shaped heat transfer tube of the present invention.

[0035] Figure 10 Measuring schematic diagram of the straight leg section of a C-shaped heat transfer tube of the present invention.

[0036] In the drawings: 1 - Detection platform; 11 - Positioning and detecting table; 111 - Positioning frame; 112 - Positioning and detecting flat plate; 12 - Moving detection table; 121 - Moving frame; 122 - Moving detection flat plate; 13 - Clamping structure; 131 - Guide rail; 132 - Sliding block; 133 - Clamping part; 1331 - Clamping groove; 1332 - Clamping base; 1333 - Claw; 1334 - Positioning screw; 14 - Positioning adjustment mechanism; 141 - Reference hole; 142 - Positioning and detecting reference block; 1421 - Horizontal support plane; 1422 - Vertical limiting surface; 15 - Levelness detecting mechanism; 2 - Detection platform adjustment mechanism; 21 - Longitudinal adjustment device; 211 - Longitudinal slide rail; 212 - Longitudinal slider; 22 - Transverse adjustment device; 221 - Transverse slide rail; 222 - Connecting beam; 223 - Transverse slider; 23 - Levelness adjustment device; 231 - Upper connecting plate; 232 - Lower connecting plate; 233 - Inclination adjustment component; 2331 - Vertical screw; 2332 - Vertical locking nut; 234 - Connecting column; 24 - Transverse driving device; 241 - Transverse screw; 242 - Adjusting nut; 243 - Support seat; 3 - C-shaped heat transfer elbow; 31 - Cross beam section; 32 - Straight leg section. Detailed implementation manners

[0037] The following illustrates the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. The present application can also be implemented or applied through different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.

[0038] It should be noted that all the process equipment or devices not specifically mentioned in the following embodiments adopt the conventional equipment or devices in the art.

[0039] In addition, it should be understood that one or more method steps mentioned in this application do not exclude the existence of other method steps before and after the combined steps or the insertion of other method steps between these clearly mentioned steps, unless otherwise specified; it should also be understood that the combined connection relationship between one or more devices / apparatuses mentioned in this application does not exclude the existence of other devices / apparatuses before and after the combined devices / apparatuses or the insertion of other devices / apparatuses between these two clearly mentioned devices / apparatuses, unless otherwise specified. Moreover, unless otherwise specified, the numbers of the method steps are only convenient tools for identifying the method steps, rather than restricting the arrangement order of the method steps or limiting the scope of implementation of this application. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of this application.

[0040] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation of the present application. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0043] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0044] The following further describes the present application in combination with specific embodiments, but the protection scope of the present application is not limited thereto. Additionally.

[0045] As Figures 1 - 5 shown, the present invention provides a C-shaped heat transfer elbow detection system, including: A detection platform 1, including a positioning detection table 11 and two moving detection tables 12 respectively arranged side by side on the left and right sides far away from each other of the positioning detection table 11. A plurality of clamping structures 13 are provided on the moving detection table 12 for clamping the cross beam section 31 and the straight leg section 32 of the C-shaped heat transfer elbow 3; A detection platform adjustment mechanism 2, including a longitudinal adjustment device 21, a transverse adjustment device 22, a level adjustment device 23, and a transverse drive device 24. The longitudinal adjustment device 21 and the transverse adjustment device 22 both extend in the horizontal direction and are perpendicular to each other; the level adjustment device 23 is arranged between the longitudinal adjustment device 21 and the transverse adjustment device 22 for adjusting the level of the transverse adjustment device 22; the transverse drive device 24 is arranged on the transverse adjustment device 22 for driving the two moving detection tables 12 to approach or move away from each other transversely; and A detection mechanism for detecting the size and shape of the C-shaped heat transfer elbow.

[0046] As Figure 3 shown, the C-shaped heat transfer elbow 3 includes a cross beam section 31 and two straight leg sections 32. The two straight leg sections 32 are connected to the cross beam section 31 through two elbow radius elbows. The elbow radius elbow is a 90° elbow. The size of the C-shaped heat transfer elbow at least includes the distance between the two straight leg sections and the length of the straight leg section; the shape of the C-shaped heat transfer elbow at least includes profile and flatness. [[ID=XX]] [[ID=XX]]

[0047] As Figure 4As shown, the positioning and detecting table 11 includes a positioning frame 111 and a positioning and detecting flat plate 112 disposed on the positioning frame 111. The positioning and detecting flat plate 112 has a positioning plane; the moving and detecting table 12 includes a moving frame 121 and a moving and detecting flat plate 122 disposed on the moving frame 121. The moving and detecting flat plate 122 has a moving and detecting plane. The positioning plane and the moving and detecting plane jointly define a detecting plane. The positioning plane is always coplanar with the moving and detecting plane.

[0048] As Figure 1 and Figure 2 shown, the longitudinal adjusting device 21 includes a pair of longitudinal slide rails 211. The longitudinal slide rails 211 extend in the horizontal direction and are parallel to each other. At least one longitudinal slider 212 adapted thereto and movable along the longitudinal slide rail 211 is respectively installed on each longitudinal slide rail 211. The longitudinal slider 212 is connected to the transverse adjusting device 22 through the level adjusting device 23 for adjusting the longitudinal position of the transverse adjusting device 22.

[0049] As Figure 1 and Figure 2 shown, the transverse adjusting device 22 is located above the longitudinal adjusting device 21 and includes a pair of transverse slide rails 221. A plurality of connecting beams 222 are connected between the two transverse slide rails 221. The two transverse slide rails 221 extend in the horizontal direction and are parallel to each other. At the same time, the transverse slide rails 221 are perpendicular to the longitudinal slide rails 211. At least two transverse sliders 223 adapted thereto and movable along the transverse slide rail 221 are respectively installed on each transverse slide rail 221. The transverse slider 223 is connected to the moving and detecting table 12.

[0050] As Figure 1 , Figure 2 , Figure 4 and Figure 5 shown, there are two sets of the transverse driving devices 24, which are symmetrically arranged at both ends of the transverse slide rail 221. Each set of the transverse driving device 24 includes a transverse screw 241 and an adjusting nut 242. The transverse screw 241 is rotatably disposed on the connecting beam 222 through a support seat 243. The adjusting nut 242 is fixedly disposed on the moving and detecting table 12. The adjusting nut 242 has a threaded hole for screwing with the transverse screw 241.

[0051] As Figure 4 and Figure 5As shown, the level adjusting device 23 includes an upper connecting plate 231 and a lower connecting plate 232 which are arranged opposite to each other up and down. The lower connecting plate 232 is fixedly connected to the longitudinal slider 212, and the upper connecting plate 231 is fixedly connected to the transverse adjusting device 22 through a connecting column 234. An inclination adjusting assembly 233 for adjusting the inclination angle of the upper connecting plate 231 is arranged between the upper connecting plate 231 and the lower connecting plate 232.

[0052] As Figure 5 shown, there are four sets of the inclination adjusting assemblies 233 in total, with two sets as a group, which are respectively installed between the upper connecting plate 231 and the lower connecting plate 232. The inclination adjusting assembly 233 includes a vertical screw rod 2331 and a vertical locking nut 2332. The lower end of the vertical screw rod 2331 is connected to the lower connecting plate 232, and the upper end of the vertical screw rod 2331 passes through the upper connecting plate 231 and is screwed with the vertical locking nut 2332. When it is necessary to adjust the level of the upper connecting plate 231, it can be achieved by adjusting the inclination adjusting assembly 233.

[0053] As Figure 1 and Figure 3 shown, the multiple clamping structures 13 on each moving detection table 12 are divided into two groups. Among them: the first group of clamping structures 13 are arranged at intervals in the transverse direction and are used to jointly clamp the crossbeam section of the C-shaped heat transfer bent pipe. The second group of clamping structures 13 on each moving detection table 12 are arranged at intervals in the longitudinal direction, and the second group of clamping structures 13 on the two moving detection tables 12 correspond to each other one by one and are aligned left and right in the transverse direction and are used to respectively clamp the two straight leg sections of the C-shaped heat transfer bent pipe.

[0054] As Figure 6 shown, the clamping structures 13 have the same structure and all include a guide rail 131 arranged on the moving detection table 12, a sliding block 132 slidably arranged on the guide rail 131, and a clamping portion 133 arranged on the sliding block 132. A clamping groove 1331 is provided on the clamping portion 133. The bottom surfaces of the clamping grooves 1331 are located on the same horizontal plane, and the clamping grooves 1331 jointly define a C-shaped clamping path, and the clamping path is used to detect the shape of the C-shaped heat transfer bent pipe.

[0055] As Figure 6 shown, the clamping portion 133 includes a clamping base 1332 and a claw 1333 arranged on the clamping base. The clamping base 1332 is fixedly arranged on the sliding block 132; the claw 1333 is provided with a clamping groove 1331.

[0056] As Figure 6As shown, the jaw 1333 can be a bakelite jaw. A strip-shaped adjustment groove is further provided on the jaw 1333. The jaw 1333 is installed on the side of the clamping base 1332 through a positioning screw 1334. When it is necessary to adjust the installation position of the jaw 1333, loosen the positioning screw 1334, adjust the jaw 1333 to a suitable position and then tighten it. The whole operation is simple and fast.

[0057] As Figure 6 shown, the clamping groove 1331 is a rectangular open groove, which facilitates the insertion and removal of the C-shaped heat transfer elbow.

[0058] As Figure 1 and Figure 3 shown, the guide rails of the first group of clamping structures 13 are arranged longitudinally, and the guide rails of the second group of clamping structures 13 are arranged transversely.

[0059] As Figure 1 and Figure 3 shown, the C-shaped heat transfer elbow detection system of the present invention further includes a positioning and adjusting mechanism 14 for adjusting the positions of the respective clamping structures 13.

[0060] As Figure 1 、 Figure 3 Figure 7 shown, the positioning and adjusting mechanism 14 includes a plurality of reference holes 141 arranged longitudinally at intervals on the positioning detection table 11 and a positioning detection reference block 142 detachably inserted into any one of the reference holes on the positioning detection table 11. A horizontal support plane 1421 and a vertical limiting surface 1422 are provided on the top of the positioning detection reference block 142. When the positioning detection reference block 142 is inserted into the reference hole 141, the horizontal support plane 1421 and the bottom surface of the clamping groove 1331 are on the same horizontal plane.

[0061] As Figure 1 and Figure 3As shown in the figure, the number of reference holes 141 on the positioning and detection table 11 is one more than the number of the second set of clamping structures 13 on each moving detection table. One of the reference holes 141 is used to adjust the position of the first set of clamping structures 13, and the remaining reference holes 141 are used to adjust the position of the second set of clamping structures 13. In this embodiment, taking the 4 reference holes 141 on the positioning and detection table 11 as an example, they are sequentially named the first reference hole, the second reference hole, the third reference hole, and the fourth reference hole from front to back. The first reference hole, the second reference hole, the third reference hole, and the fourth reference hole are arranged at intervals in the front-back direction longitudinally. Among them, the second reference hole, the third reference hole, the fourth reference hole, and the positioning and detection reference block 142 can adjust the positions of the two clamping structures 13 arranged on the left and right sides respectively, so that the center lines of the guide rails 131 of the two clamping structures 13 aligned left and right in the second set are located on the same straight line longitudinally; the first reference hole and the positioning and detection reference block 142 can adjust the position of the first set of clamping structures 13, so that the centers of the clamping grooves 1331 of each clamping structure 13 in the first set are located on the same straight line transversely.

[0062] As Figure 1 shown, the C-shaped heat transfer elbow pipe detection system of the present invention further includes a level detection mechanism 15 arranged on the detection platform for detecting the level of the detection platform.

[0063] As Figure 1 shown, the level detection mechanism 15 includes a connecting frame and a level arranged on the connecting frame. The level of the detection surface can be conveniently detected through the level.

[0064] In some embodiments of the present invention, the detection mechanism can be an artificial measurement device, such as a magnesium-aluminum flat ruler, a feeler gauge, a length vernier caliper, etc., or an automatic ranging device, such as a laser rangefinder, etc.

[0065] An application method of a C-shaped heat transfer elbow pipe detection system of the present invention includes the following steps: Step 1: Install the two mutually parallel longitudinal slide rails 211 of the longitudinal adjustment device 21 on an installation surface, and adjust the height and level of the detection platform 1 through the detection platform adjustment mechanism 2, so that the detection surface of the detection platform 1 is in a horizontal state; The height of the detection platform in this step is adjusted according to the height of the detection personnel, usually controlled at about 70-90 cm for the convenience of the detection personnel to operate. In order to realize the adjustment of the height of the detection platform, the two longitudinal slide rails 211 of the longitudinal adjustment device 21 can be installed on an installation surface that can be vertically lifted, and the vertical height of the detection platform can be adjusted by adjusting the height of the installation surface. During the adjustment process, attention should also be paid to the level detection mechanism 15 (taking a spirit level as an example in this embodiment) on the detection platform to ensure that the entire detection platform is in a horizontal state; Step 2: Position the multiple clamping structures 13 on the moving detection table 12 by using the positioning and adjusting mechanism 14. The centers of the clamping grooves 1331 of each clamping structure 13 in the first group are located on the same horizontal line, and the center lines of the guide rails 131 of two clamping structures 13 that are horizontally aligned in the second group are located on the same vertical line, so that the multiple clamping structures jointly define a clamping path for clamping the C-shaped heat transfer bent pipe. Step 3: According to the theoretical inner distance (D-X) mm between the two straight leg segments of the C-shaped heat transfer bent pipe specified in the technical requirements, adjust the position of the moving detection platform 1 by using the transverse driving device 24, and adjust the positions of each clamping structure 13 in the second group by using the positioning and adjusting mechanism 14, so that the minimum distance between the clamping groove 1331 of the second group of clamping structures 13 and the positioning reference hole is (D-X) / 2 mm; the minimum distance between the clamping groove 1331 and the positioning reference hole is the distance between the edge of the clamping groove 1331 close to the positioning detection table 11 and the center of the positioning reference hole; D is the distance between the inner walls of the two straight leg segments (i.e., the length of the cross beam segment of the C-shaped heat transfer bent pipe), with the unit of mm, and X is the tolerance of the inner distance between the two straight leg segments, with the unit of mm. Step 4: Place the C-shaped heat transfer bent pipe to be tested in the clamping path, and judge whether the contour of the C-shaped heat transfer bent pipe is qualified according to the placement situation of the C-shaped heat transfer bent pipe to be tested; if the C-shaped pipe is placed in the clamping path in a free state, the contour of the C-shaped pipe is unqualified, otherwise it is qualified; the free state of the C-shaped heat transfer pipe is the state of the C-shaped heat transfer pipe without any external force. Step 5: Use the detection mechanism to detect the dimensional data of the C-shaped heat transfer bent pipe, and then calculate the straightness of the straight leg segments of the C-shaped heat transfer bent pipe, the parallelism of the two straight leg segments, the flatness of the C-shaped heat transfer bent pipe, and the length of the straight leg segments of the C-shaped heat transfer bent pipe according to the dimensional data; the dimensional data at least includes the gap between the straight leg segments of the C-shaped heat transfer bent pipe and the clamping grooves 1331 of each clamping structure 13, the maximum gap value between the C-shaped heat transfer bent pipe and the detection plane, the lengths of the cross beam of the C-shaped heat transfer bent pipe to both pipe ends, and the bend radius.

[0066] In Step 2, the positioning and adjusting mechanism 14 is used to position the multiple clamping structures 13 on the moving detection table 12, so that the centers of the clamping grooves 1331 of each clamping structure 13 in the first group are located on the same horizontal line, and the following steps are carried out: Place the positioning detection reference block in the first reference hole of the middle detection platform base plate, and stably place the magnesium-aluminum straightedge on the reference block. Rotate the positioning detection reference block to make the magnesium-aluminum straightedge in a horizontal state, and then adjust the positions of each clamping structure on the left and right moving detection tables, so that the centers of the clamping grooves 1331 of each clamping structure 13 in the first group are located on the same horizontal line to ensure high straightness of the cross beam segment of the C-shaped heat transfer bent pipe.

[0067] In Step 2, the positioning and adjusting mechanism 14 is used to position the multiple clamping structures 13 on the moving detection table 12, so that the centerlines of the guide rails 131 of the two clamping structures 13 that are horizontally aligned left and right in the second group are located on the same straight line longitudinally. The following steps are carried out: Place the positioning and detection reference blocks into the reference holes of the positioning and detection table in sequence; Place the magnesium-aluminum straightedge on the top of the positioning and detection reference block. Since the top of the positioning and detection reference block is stepped, the magnesium-aluminum straightedge can be abutted against the horizontal support plane 1421 and the vertical limiting surface 1422, ensuring the accuracy of the placement position of the magnesium-aluminum straightedge; Rotate the positioning and detection reference block so that the magnesium-aluminum straightedge is parallel to the guide rails on the left and right sides. At this time, it can be ensured that the centerlines of the guide rails 131 of the two clamping structures 13 that are horizontally aligned left and right in the second group are located on the same straight line longitudinally, and the entire detection platform is in a horizontal state.

[0068] In Step 3, according to the inner side spacing (D-X) mm of the two straight leg segments of the C-shaped heat transfer elbow specified in the technical requirements, adjust the position of the moving detection platform 1 by using the transverse driving device 24. The following method is adopted: Adjust the left moving detection table 12 to an approximate position; Insert the positioning and detection reference block into the second reference hole; Place the length vernier caliper on the positioning and detection reference block; Rotate the positioning and detection reference block so that the length vernier caliper is perpendicular to the guide rail of the second group of clamping structures; Loosen the positioning screw 1334, finely adjust the position of the claw, and adjust the minimum distance between the right edge of the rectangular groove of the claw and the center of the second reference hole to (D-X) / 2 mm. Tighten the positioning screw 1334. At this time, the position adjustment of the clamping groove 1331 is completed; Repeat the same steps until the position adjustment of the clamping grooves 1331 of the three clamping structures 13 on the left moving detection platform 1 is completed.

[0069] Taking a C-shaped heat transfer elbow for a certain steam generator as an example for detection, the size data measured by using a feeler gauge in the application method includes the gaps between the straight leg segments of the C-shaped heat transfer elbow and the clamping grooves 1331 of the respective clamping structures 13. If the measured inner side gaps between the clamping grooves and the two straight leg segments of the C-shaped heat transfer elbow are X1, X2, X3, Y1, Y2, Y3 respectively, then the actual inner side spacing of the two straight leg segments of the C-shaped heat transfer elbow is (D-X) + max{(X1 + Y1), (X2 + Y2), (X3 + Y2)}; where X1, X2, X3 are the inner side gaps of one straight leg segment, and Y1, Y2, Y3 are the inner side gaps of the other straight leg segment; The straightness of the two straight leg segments is respectively max(X1, X2, X3) - min(X1, X2, X3) and max(Y1, Y2, Y3) - min(Y1, Y2, Y3); The parallelism of the two straight leg segments is ∣max(X1, X2, X3) - min(X1, X2, X3) - {max(Y1, Y2, Y3) - min(Y1, Y2, Y3)}∣; Measure the length A of the straight leg segment (unit: mm). According to the formula C = A + R, the C value of the C-shaped heat transfer elbow (unit: mm) can be calculated, where R is the radius of the 90° elbow (unit: mm).

[0070] Use a feeler gauge to measure the maximum clearance value between the C-shaped heat transfer elbow and the detection plane, and this value is the flatness of the C-shaped heat transfer elbow; Figure 9 Among them, S is the wall thickness of the C-shaped heat transfer elbow (unit: mm), E is the diameter of the C-shaped heat transfer elbow (unit: mm), B is the distance between the two straight leg segments, B = D + 2R, unit: mm. As Figure 10 shown, for each adjustment of a group of C-shaped heat transfer elbows, first use a vernier caliper to measure the length h1 from the clamping groove of the crossbeam segment to the bottommost clamping structure on the moving detection table. For each detection of a C-shaped elbow, only the length h2 from the pipe end to the same bottommost clamping structure on the moving detection table needs to be measured, and then use a feeler gauge to measure the clearance h3 between the C-shaped heat transfer elbow and the clamping groove at the crossbeam. Then the length A of the straight leg segment is h1 + h2 - h3 - R - E / 2.

[0071] The elbow radius can be detected by a flat plate with a 90° elbow cut out, only one piece is needed. The C-shaped heat transfer elbows are detected by the above method, and the evaluation data are shown in Table 1.

[0072] Table 1 Note: A1 and A2 respectively represent the lengths of the two straight leg segments of the C-shaped heat transfer elbow, unit: mm; △A is the length difference between the two straight leg segments, unit: mm.

[0073] This application can provide a large-area detection platform, which is convenient for measuring large-size C-shaped heat transfer pipes, especially suitable for C-shaped heat transfer pipes with a long crossbeam length; the position of the clamping jaws can be adjusted on the detection platform to be applicable to the size and shape measurement of C-shaped elbows with different elbow radii and different crossbeam lengths. It has a wide range of applications, convenient operation, high detection accuracy, and the actual measurement accuracy can reach ±0.1 mm. Further, it can be adapted to plane pipes of other shapes.

[0074] The above embodiments are for illustrative purposes of the embodiments disclosed in this application and should not be construed as limitations on this application. In addition, various modifications listed herein and changes in the methods and compositions of the invention will be apparent to those skilled in the art without departing from the scope and spirit of this application. Although this application has been specifically described in conjunction with various specific preferred embodiments of this application, it should be understood that this application should not be limited to these specific embodiments. In fact, all inventions obtained by various modifications that are obvious to those skilled in the art as described above should be included within the scope of this application.

Claims

1. A C-shaped heat transfer elbow pipe detection system, characterized in that Comprising: A detection platform (1), including a positioning detection table (11) and two moving detection tables (12) respectively arranged side by side on the left and right sides far away from each other of the positioning detection table (11). A plurality of clamping structures (13) are provided on the moving detection table (12) for clamping the C-shaped heat transfer elbow pipe (3); A detection platform adjusting mechanism (2), including a longitudinal adjusting device (21), a transverse adjusting device (22), a level adjusting device (23) and a transverse driving device (24). The longitudinal adjusting device (21) and the transverse adjusting device (22) both extend in the horizontal direction and are perpendicular to each other. The level adjusting device (23) is arranged between the longitudinal adjusting device (21) and the transverse adjusting device (22) for adjusting the level of the transverse adjusting device (22). The transverse driving device (24) is arranged on the transverse adjusting device (22) and connected to the moving detection table (12) for driving the two moving detection tables (12) to approach or move away from each other transversely; and A detection mechanism for detecting the size and shape of the C-shaped heat transfer elbow pipe (3).

2. The C-shaped heat transfer elbow pipe detection system according to claim 1, wherein: The positioning detection table (11) includes a positioning frame (111) and a positioning detection flat plate (112) arranged on the positioning frame (111). The positioning detection flat plate (112) has a positioning plane. The moving detection table (12) includes a moving frame (121) and a moving detection flat plate (122) arranged on the moving frame (121). The moving detection flat plate (122) has a moving detection plane. The positioning plane and the moving detection plane jointly define a detection surface.

3. The C-shaped heat transfer elbow pipe detection system according to claim 1, characterized in that: The longitudinal adjusting device (21) includes a pair of longitudinal slide rails (211) which extend in the horizontal direction and are parallel to each other. At least one longitudinal slider (212) adapted to and movable along the longitudinal slide rail (211) is respectively installed on each longitudinal slide rail (211). The longitudinal slider (212) is connected to the transverse adjusting device (22) through the level adjusting device (23) for adjusting the longitudinal position of the transverse adjusting device (22).

4. The C-shaped heat transfer elbow pipe detection system according to claim 3, characterized in that: The transverse adjusting device (22) is located above the longitudinal adjusting device (21), including a pair of transverse slide rails (221). A plurality of connecting beams (222) are connected between the two transverse slide rails (221). The two transverse slide rails (221) extend in the horizontal direction and are parallel to each other. At the same time, the transverse slide rails (221) are perpendicular to the longitudinal slide rails (211). At least two transverse sliders (223) adapted to and movable along the transverse slide rail (221) are respectively installed on each transverse slide rail (221). The transverse slider (223) is connected to the moving detection table (12).

5. The C-shaped heat transfer elbow pipe detection system according to claim 4, wherein: There are two sets of the transverse driving devices (24), which are symmetrically arranged at both ends of the transverse slide rail (221). Each set of the transverse driving devices (24) includes a transverse screw (241) and an adjusting nut (242). The transverse screw (241) is rotatably arranged on the connecting beam (222) through a support seat (243). The adjusting nut (242) is fixedly arranged on the moving detection table (12). The adjusting nut (242) has a threaded hole for screwing with the transverse screw (241).

6. The C-shaped heat transfer elbow pipe detection system according to claim 1, wherein: The levelness adjusting device (23) includes an upper connecting plate (231) and a lower connecting plate (232) which are arranged opposite to each other up and down. The lower connecting plate (232) is fixedly connected with the longitudinal slider (212). The upper connecting plate (231) is fixedly connected with the transverse adjusting device (22) through a connecting column (234). An inclination adjusting component (233) for adjusting the inclination angle of the upper connecting plate (231) is arranged between the upper connecting plate (231) and the lower connecting plate (232).

7. The C-shaped heat transfer elbow pipe detection system according to claim 1, wherein The multiple clamping structures (13) on each moving detection table (12) are divided into two groups. Among them: the first group of clamping structures (13) are arranged at intervals transversely and are used to jointly clamp the cross beam section of the C-shaped heat transfer bent pipe. The second group of clamping structures (13) on each moving detection table (12) are arranged at intervals longitudinally, and the second group of clamping structures (13) on the two moving detection tables (12) correspond to each other one by one and are aligned left and right transversely and are used to respectively clamp the two straight leg sections of the C-shaped heat transfer bent pipe.

8. The C-shaped heat transfer elbow pipe detection system according to claim 7, characterized in that: The clamping structures (13) have the same structure and each includes a guide rail (131) arranged on the moving detection table (12), a sliding block (132) slidably arranged on the guide rail (131), and a clamping part (133) arranged on the sliding block (132). A clamping groove (1331) is arranged on the clamping part (133). The bottom surfaces of the clamping grooves (1331) are located on the same horizontal plane, and the clamping grooves (1331) jointly define a C-shaped clamping path, and the clamping path is used to detect the shape of the C-shaped heat transfer bent pipe.

9. The C-shaped heat transfer elbow pipe detection system according to claim 1, wherein: It further includes a positioning and adjusting mechanism (1), which is used to adjust the positions of the clamping structures (13).

10. A method for applying the C-shaped heat transfer elbow detection system according to any one of claims 1 to 9, characterized in that, It includes the following steps: Step 1: Install the two mutually parallel longitudinal slide rails (211) of the longitudinal adjusting device (21) on an installation surface, and adjust the height and levelness of the detection platform (1) through the detection platform adjusting mechanism (2) so that the detection surface of the detection platform (1) is in a horizontal state; Step 2: Use the positioning and adjusting mechanism (14) to position the multiple clamping structures (13) on the moving detection table (12) so that the centers of the clamping grooves (1331) of the clamping structures (13) in the first group are located on the same straight line transversely, and the center lines of the guide rails (131) of the two clamping structures (13) that are aligned left and right transversely in the second group are located on the same straight line longitudinally, so that the multiple clamping structures jointly define a clamping path for clamping the C-shaped heat transfer bent pipe; Step 3: According to the inner spacing between the two straight leg segments of the C-shaped heat transfer elbow specified in the technical requirements, use the lateral driving device (24) to adjust the position of the moving detection platform (1), and use the positioning and adjusting mechanism (14) to adjust the position of the second clamping structure (13) so that the minimum distance between the clamping groove (1331) of the second clamping structure (13) and the positioning reference hole is half of the inner spacing between the two straight leg segments; Step 4: Place the C-shaped heat transfer elbow to be measured in the clamping path, and judge whether the profile of the C-shaped heat transfer elbow is qualified according to the placement of the C-shaped heat transfer elbow to be measured; if the C-shaped pipe is placed in the clamping path in a free state, the profile of the C-shaped pipe is qualified, otherwise it is unqualified; the free state of the C-shaped heat transfer pipe is the state of the C-shaped heat transfer pipe without any external force; Step 5: Use the detection mechanism to detect the dimensional data of the C-shaped heat transfer elbow, and then calculate the straightness of the straight leg segments, the parallelism of the two straight leg segments, the flatness of the C-shaped heat transfer elbow, and the length of the straight leg segments of the C-shaped heat transfer elbow according to the dimensional data.

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