Measurement method for butt joint installation of steam generator and pump shell

Abstract

The embodiment of the invention provides a steam generator and pump shell butt joint installation measurement method, and relates to the technical field of nuclear island construction. The steam generator and pump shell butt joint installation measurement method comprises the steps that data measurement is conducted on a pump shell and a steam generator before butt joint, coordinate system reproduction and data conversion are conducted according to the position of a common measurement point in the butt joint process, and then pump shell data are converted into data under a reproduction coordinate system; according to the data of the pump shell in the reproduction coordinate system and the data of the steam generator in the reproduction coordinate system, the butt joint condition of the pump shell and the steam generator is obtained, then the butt joint condition is accurately and conveniently obtained, and control over the butt joint precision is achieved. In addition, according to the method, high-precision assembly is achieved by means of multi-time measurement and conversion and calculation according to measurement data, and the method is not affected by the placement position of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of nuclear island construction technology, and more specifically, to a method for measuring the docking installation of a steam generator and a pump casing. Background Technology

[0002] The pump casing assembly is a crucial component installed on the steam generator, and its outlet pipe needs to be connected to the reactor pressure vessel via the main pipeline. Furthermore, as the pressure-bearing equipment in the primary loop of the nuclear island, the pump casing assembly exhibits significant dimensional and positional tolerances during its assembly and welding with the steam generator, necessitating strict control over their relative positions during docking.

[0003] However, at present, it is difficult to detect and control the docking status between the pump casing assembly and the steam generator during docking operations, making it difficult to effectively guarantee the docking accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a method for measuring the docking installation of a steam generator and a pump casing, which can improve the technical problem in the prior art where it is difficult to accurately detect the docking status to ensure docking accuracy when docking the pump casing assembly and the steam generator.

[0005] Embodiments of the present invention can be implemented in the following ways: A method for measuring the docking installation of a steam generator and a pump casing, the method comprising: Obtain the first data of the pump casing before docking and installation, and construct a first coordinate system based on the first data; Acquire second data of the steam generator before docking and installation, and construct a second coordinate system based on the second data; set a common measurement point on the trunnion of the steam generator, and obtain the deflection angle of the position of the common measurement point on the second coordinate system relative to the coordinate axis; During the docking process between the steam generator and the pump casing, the third data of the steam generator is acquired, and a third coordinate system is constructed based on the third data; the third coordinate system is deflected in the opposite direction by the deflection angle to reproduce the second coordinate system, thereby obtaining the reproduced coordinate system; Under the reproduction coordinate system, the coordinate values ​​of some data of the pump casing are obtained and used as the theoretical value group. The coordinate values ​​of the part of the first data corresponding to the partial data under the first coordinate system are used as the actual value group. The actual value group is fitted and transformed to the theoretical value to obtain the fitting transformation relationship. The first data is transformed according to the fitting transformation relationship. The transformed data is the data of the pump casing under the reproduction coordinate system. The docking status of the pump casing and the steam generator is obtained based on the data of the pump casing in the reproduction coordinate system and the data of the steam generator in the reproduction coordinate system.

[0006] Optionally, the pump casing has a flange face and a discharge port pipe, and the flange face has multiple bolt countersunk holes; The first data includes the circumference data of the flange face, the center data of the flange face, the center data of the outlet pipe, and the center data of the multiple bolt countersunk holes.

[0007] Optionally, the step of constructing the first coordinate system based on the first data includes: constructing the first coordinate system based on the circumference data of the flange surface, the center data of the flange surface, and the center data of the outlet pipe; wherein the origin of the first coordinate system is located at the center of the flange surface, the Z-axis of the first coordinate system is perpendicular to the circumference of the flange surface, and the X-axis of the first coordinate system passes through the center of the outlet pipe.

[0008] Optionally, the steam generator has a support platform, an inlet nozzle, and two outlet nozzles; The second data includes the circumference data of the support platform, the center data of the support platform, the center data of the inlet nozzle, and the center data of the two outlet nozzles.

[0009] Optionally, the step of constructing the second coordinate system based on the second data includes: obtaining the midpoint position of the line connecting the centers of the two outlet nozzles based on the center data of the two outlet nozzles; constructing the second coordinate system based on the circumference data of the support platform, the center data of the support platform, and the midpoint position; wherein the origin of the second coordinate system is the center of the support platform, the X-axis of the second coordinate system passes through the midpoint position, and the Z-axis of the second coordinate system is perpendicular to the circumference of the support platform.

[0010] Optionally, the steam generator further includes a support platform; the third data includes circumferential data of the support platform, center data of the support platform, and position data of the common measurement point; The steps of constructing a third coordinate system based on the third data include: constructing the third coordinate system based on the circumference data of the support platform, the center data of the support platform, and the position data of the common measurement point; wherein, the origin of the third coordinate system is the center of the support platform, the X-axis of the third coordinate system passes through the common measurement point, and the Z-axis of the third coordinate system is perpendicular to the circumference of the support platform.

[0011] Optionally, the step of obtaining the docking status between the pump casing and the steam generator includes: Obtain the distance between the flange face of the pump casing and the end face of the support platform of the steam generator; this step includes: Obtain the Z-axis coordinate value of the center of the flange face of the pump casing in the reproduced coordinate system. The Z-axis coordinate value is the distance between the flange face of the pump casing and the end face of the support platform of the steam generator.

[0012] Optionally, the step of obtaining the docking status between the pump casing and the steam generator includes: Obtain the distance between the center of the pump casing's outlet pipe and the end face of the steam generator's support platform; this step includes: Obtain the Z-axis coordinate value of the center of the outlet pipe of the pump casing in the reproduced coordinate system. The Z-axis coordinate value is the distance between the center of the outlet pipe of the pump casing and the end face of the support platform of the steam generator.

[0013] Optionally, the step of obtaining the docking status between the pump casing and the steam generator includes: Obtain the coaxiality between the center of the pump casing flange face and the outlet nozzle of the steam generator; this step includes: Obtain the coordinates of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system; Obtain the coordinates of the center of the flange face of the pump casing in the reconstructed coordinate system; The coaxiality between the center of the pump casing flange and the outlet nozzle of the steam generator is calculated using the following formula:

[0014]

[0015]

[0016] in, Let X be the X-axis coordinate of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system. Let Y be the Y-axis coordinate of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system. Let X be the X-axis coordinate value of the center of the flange face of the pump casing in the reproducing coordinate system. The Y-axis coordinate value of the center of the flange surface of the pump casing in the reproducing coordinate system; The coaxiality between the center of the pump casing flange surface and the outlet nozzle of the steam generator.

[0017] Optionally, the step of obtaining the docking status between the pump casing and the steam generator includes: Obtain the parallelism between the flange face of the pump casing and the end face of the support platform; this step includes: Obtain the Z-axis coordinate values ​​of the centers of multiple bolt countersunk holes on the flange surface of the pump casing in the reproduction coordinate system, and calculate the difference between the maximum and minimum values ​​among the multiple Z-axis coordinate values; The parallelism between the pump casing flange face and the support platform end face is calculated using the following formula:

[0018]

[0019] in, The parallelism; The difference; The outer diameter design dimension of the pump casing flange; The design dimension is the cross-sectional diameter of the countersunk hole for the bolt.

[0020] Optionally, the step of obtaining the docking status between the pump casing and the steam generator includes: Obtain the azimuth angle of the centerline of the discharge port pipe of the pump casing; this step includes: Obtain the first projection point obtained by projecting the center of the pump casing's outlet pipe onto the XY plane of the reproduced coordinate system; Obtain the second projection point obtained by projecting the outlet nozzle of the steam generator onto the XY plane of the reproduced coordinate system; The straight line passing through the first projection point and the second projection point is the azimuth line of the discharge port pipe of the pump casing; Obtain the angle between the X-axis of the reproduction coordinate system and the azimuth line, where the angle is the azimuth angle of the center line of the discharge port pipe.

[0021] The beneficial effects of the steam generator and pump casing docking and measurement method provided by the embodiments of the present invention include: The present invention provides a method for measuring the docking installation of a steam generator and a pump casing. This method utilizes steam generator data measured before and during docking to construct a replica coordinate system. By converting the measured pump casing data into data within the replica coordinate system, the docking status of the pump casing and steam generator can be obtained based on the pump casing data and the steam generator data in the replica coordinate system. This allows for precise and convenient acquisition of the docking status and control of docking accuracy. Furthermore, this method achieves high-precision assembly through multiple measurements and conversion and calculation based on the measurement data, unaffected by the workpiece placement position. Attached Figure Description

[0022] The above-described features and advantages of the present invention will be better understood after reading the following detailed description of embodiments of the present disclosure in conjunction with the accompanying drawings. In the drawings, components are not necessarily drawn to scale, and components having similar related characteristics or features may have the same or similar reference numerals.

[0023] Figure 1 A schematic diagram of the structure of a steam generator connected to a pump casing according to one aspect of the present invention is shown. Figure 2 A schematic cross-sectional view of the connection between a steam generator and a pump casing according to one aspect of the present invention is shown. Figure 3 The diagram shows a target placement for data acquisition points when measuring a countersunk bolt hole using a laser tracker, according to one aspect of the present invention.

[0024] Figure label: 100-Pump casing; 111-Flange face; 112-Bolt countersunk hole; 113-Discharge port pipe; 200-Steam generator; 211-Support platform; 212-Inlet nozzle; 213-Outlet nozzle; 214-Trunking; 31-Target ball; 32-Measuring seat; 321-Cylindrical part; 322-Flat part. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0026] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," "outer," or "vertical" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use, and does not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] At the same time, it should be noted that the terms "first" and "second" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components, etc. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Figure 1 This diagram shows the structure of the steam generator 200 and the pump casing 100 after docking, as provided in this embodiment. Figure 2 This diagram shows a cross-sectional view of the connection between the steam generator 200 and the pump casing 100 provided in this embodiment. Please refer to the attached diagram. Figure 1 and Figure 2 This embodiment provides a method for measuring the docking installation of a steam generator 200 and a pump casing 100, which can more accurately achieve detection and control during the docking installation process of the steam generator 200 and the pump casing 100. The steps of the method for measuring the docking installation of the steam generator 200 and the pump casing 100 provided in this embodiment include: S01: Obtain the first data of the pump casing 100 before docking and installation, and construct the first coordinate system based on the first data.

[0030] like Figure 1 and Figure 2 As shown, in this embodiment, two pump housings 100 need to be installed on one steam generator 200. Therefore, when performing step S01, the first data of the two pump housings 100 need to be acquired respectively, and a first coordinate system needs to be constructed accordingly. The data measurement of the two pump housings 100 and the subsequent docking detection process are the same. Therefore, the following description takes the installation process of one of the pump housings 100 as an example.

[0031] The pump casing 100 has a flange face 111 and a discharge port pipe 113. Multiple countersunk bolt holes 112 are formed on the flange face 111, and these holes are distributed approximately circumferentially along the flange face 111. Thus, during step S01, the detected first data may include circumferential data of the flange face 111, center data of the flange face 111, center data of the discharge port pipe, and center data of the multiple countersunk bolt holes 112. Accordingly, the step of obtaining the first data before the pump casing 100 is installed includes: S11: Obtain the center data of multiple bolt countersunk holes 112.

[0032] Optionally, in this embodiment, a laser tracker is used to measure the component data. Specifically, Figure 3A schematic diagram showing the placement of the target for data acquisition points when measuring the countersunk hole 112 of a bolt using a laser tracker is illustrated. Figure 3 As shown, when measuring the countersunk hole 112 of the bolt, the target ball 31 is placed on the cylindrical pin measuring seat 32, and then the cylindrical part 321 of the measuring seat is pressed tightly against the inner wall of the countersunk hole 112, and the flat part 322 of the measuring seat is pressed tightly against the flange plane. Then, a point is collected at each of the four circumferences of the countersunk hole 112. In this way, the circumference is fitted by the obtained four-point data, and the center data of the countersunk hole 112 of the bolt is obtained according to the fitted circumference.

[0033] It should be noted that when fitting a circle based on four data points, the radial error of the fitted circle should be within ±0.05mm; otherwise, the data should be collected again.

[0034] In this embodiment, before the pump housing 100 is connected, the center data of all bolt countersunk holes 112 on the pump housing 100 can be obtained. At the same time, in order to ensure that the correspondence between multiple center data and multiple bolt countersunk holes 112 is accurate and to facilitate the subsequent execution of steps, each bolt countersunk hole 112 can be named according to a preset order.

[0035] S12: Obtain the center data of the discharge port pipe 113 of the pump casing 100.

[0036] A laser tracker is used to measure the discharge port connector 113 of the pump casing 100. During measurement, the target ball 31 is placed on the cylindrical pin measuring seat 32, and then the cylindrical part 321 of the measuring seat 32 is pressed tightly against the inner wall of the convex outlet connector of the pump casing 100, and the flat part 322 of the measuring seat 32 is pressed tightly against the end face of the discharge port connector 113. At the same time, no less than eight points are collected evenly along the circumference of the discharge port connector 113. The data of no less than eight points are used to fit a circle, and then the center data of the discharge port connector 113 is obtained from the fitted circle.

[0037] S13: Obtain the circumference and center data of flange face 111.

[0038] A laser tracker is used to measure the flange face 111. During measurement, the target ball 31 is placed on the cylindrical pin measuring seat 32, and then the cylindrical part 321 of the measuring seat 32 is pressed tightly against the inner wall of the flange face 111, and the flat part 322 of the measuring seat 32 is pressed tightly against the flange face 111. At the same time, no less than eight measuring points are collected evenly along the circumference of the flange face 111, and the circumference data of the flange face 111 is obtained by fitting the data of the no less than eight points. The center data of the flange face 111 is obtained by fitting the circumference.

[0039] After acquiring the first data of the pump casing 100, a first coordinate system can be constructed based on the first data. The steps for constructing the first coordinate system based on the first data include: constructing the first coordinate system based on the circumference data of the flange face 111, the center data of the flange face 111, and the center data of the discharge port pipe 113. The origin of the first coordinate system is located at the center of the flange face 111; in other words, the center of the flange face 111 is the origin of the first coordinate system. The Z-axis of the first coordinate system is perpendicular to the circumference of the flange face 111; in other words, the Z-axis is the axial direction of the circumference of the flange face 111. The X-axis of the first coordinate system passes through the center of the discharge port pipe 113.

[0040] It should be noted that since the first coordinate system is constructed using the circumferential data of the flange face 111, the center data of the flange face 111, and the center data of the outlet nozzle 113, steps S12 and S13 should be executed before the step of constructing the first coordinate system, while step S11 can be executed before or after the step of constructing the first coordinate system.

[0041] Furthermore, after constructing the first coordinate system, the coordinate values ​​of each data point in the first data can be obtained in the first coordinate system.

[0042] S02: Obtain the second data of the steam generator 200 before docking and installation, and construct the second coordinate system based on the second data.

[0043] The steam generator 200 has a support platform 211, an inlet nozzle 212, and two outlet nozzles 213. The support platform 211 can also be referred to as a head base. Therefore, when performing step S02, the detected second data may include the circumferential data of the support platform 211, the center data of the support platform 211, the center data of the inlet nozzle 212, and the center data of the two outlet nozzles 213. Accordingly, the step of obtaining the second data before the steam generator 200 is installed includes: S21: Obtain the circumferential and center data of the support platform 211.

[0044] A laser tracker is used to measure the support platform 211. During measurement, the target ball 31 is placed on the cylindrical pin measuring seat 32, the cylindrical part 321 of the measuring seat is pressed tightly against the outer wall of the support platform 211, and the flat part 322 is pressed tightly against the plane of the support platform 211. At least eight points are collected along the circumference of the support platform 211. The circumference data of the support platform 211 is obtained by fitting the data of at least eight points. The center data of the support platform 211 is obtained based on the fitted circumference.

[0045] It should be noted that, as Figure 1As shown, in this embodiment, the support platform 211 has a shape with straight segments and arc segments. Therefore, when collecting data along the circumference of the support platform 211, the straight segment portion of the support platform 211 should be avoided.

[0046] S22: Obtain the center data of the inlet nozzle 212.

[0047] The inlet nozzle 212 is measured using a laser tracker. During measurement, the target ball 31 is placed directly on the blunt edge of the bevel of the inlet nozzle 212, and at least eight points are collected evenly along the circumference of the inlet nozzle 212. A fitting plane is obtained based on the data from these eight points. Then, the target ball 31 is pressed tightly against the inner wall of the inlet nozzle 212, and at least two rings of measurement points are collected on the inner wall, with at least eight measurement points evenly distributed along the circumference of the inlet nozzle 212 in each ring. The data measured from the at least two rings of measurement points are then projected onto the fitting plane, and a circle is fitted based on the projected points to obtain the center data of the inlet nozzle 212.

[0048] S23: Obtain the center data of the outlet nozzle 213.

[0049] A laser tracker is used to measure the outlet nozzle 213. During measurement, the target ball is placed directly on the blunt edge of the bevel of the outlet nozzle 213, and at least eight points are collected evenly along the circumference of the outlet nozzle 213. The data from these eight points are used to fit a fitting plane. Then, the target ball 31 is placed tightly against the inner wall of the outlet nozzle 213, and at least two rings of measurement points are collected on the inner wall, with at least eight measurement points evenly distributed along the circumference of the outlet nozzle 213 in each ring. The data from the at least two rings of measurement points are then projected onto the fitting plane, and a circle is fitted based on the projection points to obtain the center data of the outlet nozzle 213.

[0050] In this embodiment, the steam generator 200 has two outlet nozzles 213. Therefore, the two outlet nozzles 213 need to be measured separately during measurement, and the center data of the outlet nozzles 213 are obtained as two.

[0051] After obtaining the second data, a second coordinate system can be constructed based on it. Specifically, the steps for constructing the second coordinate system include: The midpoint of the line connecting the centers of the two outlet nozzles 213 is obtained based on the center data of the two outlet nozzles 213. A second coordinate system is constructed based on the circumference data of the support platform 211, the center data of the support platform 211, and the midpoint position. The origin of the second coordinate system is the center of the support platform 211; the X-axis of the second coordinate system passes through the midpoint position; and the Z-axis of the second coordinate system is perpendicular to the circumference of the support platform 211.

[0052] It should be noted that since the second coordinate system is constructed using the circumferential data of the support platform 211, the center data of the support platform 211, and the midpoint position, steps S21 and S23 should be executed before the step of constructing the second coordinate system, while step S22 can be executed before or after the step of constructing the second coordinate system.

[0053] Furthermore, after constructing the second coordinate system, the coordinate values ​​of each data point in the second data can be obtained in the second coordinate system.

[0054] S03: Set a common measuring point on the trunnion 214 of the steam generator 200, and obtain the deflection angle of the common measuring point relative to the coordinate axis in the second coordinate system.

[0055] Specifically, in this embodiment, a common target is fixed on the trunnion 214 of the steam generator 200. The position of the common target is the location of the common measurement point, and the position of the common target relative to the trunnion 214 remains fixed during subsequent docking. The target ball 31 is placed on the common target to collect the position of the common measurement point, thereby obtaining the angle of the common measurement point relative to the X-axis of the second coordinate system. This angle is the deflection angle.

[0056] S04: Obtain the coordinate system for reproduction.

[0057] During the docking process, the third data of the steam generator 200 is acquired, and a third coordinate system is constructed based on the third data.

[0058] The third data includes the circumference data of the support platform 211, the center data of the support platform 211, and the position data of the common measurement point. Specifically, the process of obtaining the third data can be referred to steps S21 and S03, and will not be repeated here.

[0059] The steps for constructing a third coordinate system based on the third data include: constructing a third coordinate system based on the circumference data of the support platform 211, the center data of the support platform 211, and the position data of the common measurement point obtained during the docking process. The origin of the third coordinate system is the center of the support platform 211, the X-axis of the third coordinate system passes through the common measurement point, and the Z-axis of the third coordinate system is perpendicular to the circumference of the support platform 211.

[0060] After constructing the third coordinate system, the third coordinate system is reversed by the deflection angle obtained in step S03, thereby reproducing the second coordinate system. The reproduced second coordinate system is the reproduced coordinate system.

[0061] S05: Perform data conversion for pump casing 100.

[0062] During the docking process, the coordinate values ​​of some data of the pump casing 100 are obtained in the reproduction coordinate system and used as the theoretical value set. Preferably, during the docking process, at least five bolt countersunk holes 112 are selected on the flange face 111 of the pump casing 100 for measurement. The specific measurement process can be referred to step S11, which will not be repeated here. After measurement, the center data of the at least five bolt countersunk holes 112 are obtained, and the coordinate values ​​of the centers of the at least five bolt countersunk holes 112 in the reproduction coordinate system are obtained. The coordinate values ​​of the centers of the at least five bolt countersunk holes 112 are used as the theoretical value set.

[0063] The coordinate values ​​of the portion of the first data that corresponds to the aforementioned portion of the data in the first coordinate system are taken as the actual value group. Specifically, the coordinate values ​​of at least five bolt countersunk holes 112 in the first data that correspond to at least five bolt countersunk holes 112 in the theoretical value group are taken as the actual value group in the first coordinate system, so that the data in the actual value group corresponds one-to-one with the data in the theoretical value group.

[0064] By fitting and transforming the actual data set with the theoretical values, a fitting transformation relationship between the theoretical and actual data sets can be obtained. This fitting transformation relationship can then be used to transform the first set of data. The converted data represents the pump casing 100 in the reproducing coordinate system. Specifically, during the fitting transformation, the transformation error should be less than 0.10 mm to ensure optimal fitting.

[0065] It should be noted that in this embodiment, the fitting relationship is obtained by fitting the coordinate values ​​of the center of at least five bolt countersunk holes 112 in the reproduction coordinate system measured during the docking process with the coordinate values ​​of the at least five bolt countersunk holes 112 in the first coordinate system measured before docking. It can be understood that in some other embodiments, the coordinate values ​​of other pump housing 100 features can also be used for fitting and transformation.

[0066] S06: Obtain the docking status of pump casing 100 and steam generator 200 based on the data of pump casing 100 in the reproduction coordinate system and the data of steam generator 200 in the reproduction coordinate system.

[0067] Specifically, in this embodiment, the docking of the pump casing 100 and the steam generator 200 includes: the coaxiality of the center of the pump casing 100 flange and the outlet nozzle 213 of the steam generator 200, the parallelism of the pump casing 100 flange face 111 and the support platform 211, the distance between the end faces of the pump casing 100 flange face 111 and the support platform 211, the distance between the center of the pump casing 100 outlet pipe 113 and the end face of the support platform 211, and the azimuth angle of the centerline of the pump casing 100 outlet pipe 113.

[0068] Thus, step S06 includes the following steps: S61: Obtain the distance between the flange face 111 of the pump casing 100 and the end face of the support platform 211 of the steam generator 200.

[0069] Obtain the Z-axis coordinate value of the center of the flange face 111 of the pump casing 100 in the reproducing coordinate system. The Z-axis coordinate value is the distance between the flange face 111 of the pump casing 100 and the end face of the support platform 211 of the steam generator 200.

[0070] S62: Obtain the distance between the center of the discharge port pipe 113 of the pump casing 100 and the end face of the support platform 211 of the steam generator 200.

[0071] Obtain the Z-axis coordinate value of the center of the outlet pipe 113 of the pump casing 100 in the reproduced coordinate system. This Z-axis coordinate value is the distance between the center of the outlet pipe 113 of the pump casing 100 and the end face of the support platform 211 of the steam generator 200.

[0072] S63: Obtain the coaxiality between the center of the flange face 111 of the pump casing 100 and the outlet nozzle 213 of the steam generator 200.

[0073] Obtain the coordinates of the center of the outlet nozzle 213 of the steam generator 200 in the reproducing coordinate system. Based on the center data of the outlet nozzle 213 obtained in step S23, obtain the coordinates of the center of the outlet nozzle 213 in the reproducing coordinate system.

[0074] Obtain the coordinates of the center of the flange face 111 of the pump casing 100 in the reproduced coordinate system. Specifically, the coordinates of the center of the flange face 111 are the transformed coordinates obtained in step S05.

[0075] The coaxiality between the center of the flange face 111 of the pump casing 100 and the outlet nozzle 213 of the steam generator 200 is calculated using the following formula:

[0076]

[0077]

[0078] in, The X-axis coordinate value of the center of the outlet nozzle 213 of the steam generator 200 in the reproducing coordinate system; The Y-axis coordinate value of the center of the outlet nozzle 213 of the steam generator 200 in the reproducing coordinate system; Let X be the X-axis coordinate of the center of the flange face 111 of the pump casing 100 in the reproducing coordinate system. The Y-axis coordinate value of the center of the flange face 111 of the pump casing 100 in the reproducing coordinate system; The coaxiality between the center of the flange face 111 of the pump casing 100 and the outlet nozzle 213 of the steam generator 200.

[0079] S64: Obtain the parallelism between the flange face 111 of the pump casing 100 and the end face of the support platform 211.

[0080] Obtain the Z-axis coordinates of the centers of multiple bolt countersunk holes 112 on the flange face 111 of the pump casing 100 in the replicated coordinate system, and calculate the difference between the maximum and minimum Z-axis coordinates. Specifically, based on the conversion data in step S05, obtain the Z-axis coordinates of the centers of all bolt countersunk holes 112 on the flange face 111 of the pump casing 100 in the replicated coordinate system, and calculate the difference between the maximum and minimum Z-axis coordinates of all bolt countersunk holes 112 in the replicated coordinate system. .

[0081] The parallelism between the flange face 111 of the pump casing 100 and the end face of the support platform 211 is calculated using the following formula:

[0082]

[0083] in, Parallelism; The difference; The outer diameter design dimension for the 100mm flange of the pump casing; Design dimensions for the cross-sectional diameter of the countersunk hole 112 for the bolt.

[0084] S65: Obtain the azimuth angle of the centerline of the discharge port pipe 113 of the pump casing 100.

[0085] Obtain the XY plane of the reconstructed coordinate system, and project the center of the pump casing 100 discharge pipe 113 transformed in step S05 onto the XY plane to obtain the first projection point.

[0086] Obtain the second projection point obtained by projecting the outlet nozzle 213 of the steam generator 200 onto the XY plane in the reconstructed coordinate system. Specifically, the second projection point can be obtained by projecting the center point of the outlet nozzle 213 obtained in step S63 onto the XY plane.

[0087] The straight line determined by the first projection point and the second projection point is the azimuth line of the discharge port pipe 113 of the pump casing 100, that is, the azimuth line of the discharge port pipe 113 passes through both the first projection point and the second projection point.

[0088] Obtain the angle between the X-axis of the reproduction coordinate system and the azimuth line. This angle is the azimuth angle of the center line of the discharge port pipe 113.

[0089] By repeating steps S04 to S06 during the docking process, the docking status can be controlled to ensure docking quality. At the same time, in the final state, measurements can be taken according to steps S04 to S06 to verify the final state.

[0090] The method for measuring the docking installation of the steam generator 200 and pump casing 100 achieves high-precision assembly through multiple measurements and simple calculations, unaffected by the placement of the workpieces. This allows for control and reduction of the impact of welding, transportation, and hoisting processes on the product and on-site construction. Detailed data measurements of the steam generator 200 and pump casing 100 are performed before docking. During the subsequent docking and welding process, the data collected from individual components can be reproduced through the establishment of common measurement points. This avoids the problem of welding machines and scaffolding obstructing the view and making data collection difficult during the docking installation process. The docking status can be monitored in real time during installation, allowing for timely adjustments based on data changes to ensure welding accuracy and prevent post-weld dimensional deviations. Furthermore, the use of only one common measurement point helps ensure the stability of its position.

[0091] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for measuring the connection between a steam generator and a pump casing, characterized in that, The method for measuring the connection between the steam generator and the pump casing includes: Obtain the first data of the pump casing before docking and installation, and construct a first coordinate system based on the first data; Acquire second data of the steam generator before docking and installation, and construct a second coordinate system based on the second data; set a common measurement point on the trunnion of the steam generator, and obtain the deflection angle of the position of the common measurement point on the second coordinate system relative to the coordinate axis; During the docking process between the steam generator and the pump casing, the third data of the steam generator is acquired, and a third coordinate system is constructed based on the third data; The third coordinate system is deflected in the opposite direction by the deflection angle to reproduce the second coordinate system, thereby obtaining the reproduced coordinate system; Under the reproduction coordinate system, the coordinate values ​​of some data of the pump casing are obtained and used as the theoretical value group. The coordinate values ​​of the part of the first data corresponding to the partial data under the first coordinate system are used as the actual value group. The actual value group is fitted and transformed to the theoretical value to obtain the fitting transformation relationship. The first data is transformed according to the fitting transformation relationship. The transformed data is the data of the pump casing under the reproduction coordinate system. The docking status of the pump casing and the steam generator is obtained based on the data of the pump casing in the reproduction coordinate system and the data of the steam generator in the reproduction coordinate system.

2. The method for measuring the connection between the steam generator and the pump casing according to claim 1, characterized in that, The pump casing has a flange face and a discharge port pipe, and the flange face has multiple bolt countersunk holes; The first data includes the circumference data of the flange face, the center data of the flange face, the center data of the outlet pipe, and the center data of the multiple bolt countersunk holes.

3. The method for measuring the connection between the steam generator and the pump casing according to claim 2, characterized in that, The step of constructing the first coordinate system based on the first data includes: constructing the first coordinate system based on the circumference data of the flange surface, the center data of the flange surface, and the center data of the outlet pipe; wherein, the origin of the first coordinate system is located at the center of the flange surface, the Z-axis of the first coordinate system is perpendicular to the circumference of the flange surface, and the X-axis of the first coordinate system passes through the center of the outlet pipe.

4. The method for measuring the connection between the steam generator and the pump casing according to claim 1, characterized in that, The steam generator has a support platform, an inlet nozzle, and two outlet nozzles; The second data includes the circumference data of the support platform, the center data of the support platform, the center data of the inlet nozzle, and the center data of the two outlet nozzles.

5. The method for measuring the connection between the steam generator and the pump casing according to claim 4, characterized in that, The step of constructing the second coordinate system based on the second data includes: obtaining the midpoint position of the line connecting the centers of the two outlet nozzles based on the center data of the two outlet nozzles; constructing the second coordinate system based on the circumference data of the support platform, the center data of the support platform, and the midpoint position; wherein, the origin of the second coordinate system is the center of the support platform, the X-axis of the second coordinate system passes through the midpoint position, and the Z-axis of the second coordinate system is perpendicular to the circumference of the support platform.

6. The method for measuring the connection between the steam generator and the pump casing according to claim 1, characterized in that, The steam generator also includes a support platform; the third data includes the circumference data of the support platform, the center data of the support platform, and the position data of the common measurement point; The steps of constructing a third coordinate system based on the third data include: constructing the third coordinate system based on the circumference data of the support platform, the center data of the support platform, and the position data of the common measurement point; wherein, the origin of the third coordinate system is the center of the support platform, the X-axis of the third coordinate system passes through the common measurement point, and the Z-axis of the third coordinate system is perpendicular to the circumference of the support platform.

7. The method for measuring the connection between the steam generator and the pump casing according to claim 6, characterized in that, The steps for obtaining the docking status of the pump casing and the steam generator include: Obtain the distance between the flange face of the pump casing and the end face of the support platform of the steam generator; this step includes: Obtain the Z-axis coordinate value of the center of the flange face of the pump casing in the reproduced coordinate system. The Z-axis coordinate value is the distance between the flange face of the pump casing and the end face of the support platform of the steam generator.

8. The method for measuring the connection between the steam generator and the pump casing according to claim 6, characterized in that, The steps for obtaining the docking status of the pump casing and the steam generator include: Obtain the distance between the center of the pump casing's outlet pipe and the end face of the steam generator's support platform; this step includes: Obtain the Z-axis coordinate value of the center of the outlet pipe of the pump casing in the reproduced coordinate system. The Z-axis coordinate value is the distance between the center of the outlet pipe of the pump casing and the end face of the support platform of the steam generator.

9. The method for measuring the connection between a steam generator and a pump casing according to claim 6, characterized in that, The steps for obtaining the docking status of the pump casing and the steam generator include: Obtain the coaxiality between the center of the pump casing flange face and the outlet nozzle of the steam generator; this step includes: Obtain the coordinates of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system; Obtain the coordinates of the center of the flange face of the pump casing in the reconstructed coordinate system; The coaxiality between the center of the pump casing flange and the outlet nozzle of the steam generator is calculated using the following formula: in, Let X be the X-axis coordinate of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system. Let Y be the Y-axis coordinate of the center of the outlet nozzle of the steam generator in the reconstructed coordinate system. Let X be the X-axis coordinate value of the center of the flange surface of the pump casing in the reproducing coordinate system. Let Y be the Y-axis coordinate value of the center of the flange face of the pump casing in the reproducing coordinate system. The coaxiality between the center of the pump casing flange surface and the outlet nozzle of the steam generator.

10. The method for measuring the connection between a steam generator and a pump casing according to claim 6, characterized in that, The steps for obtaining the docking status of the pump casing and the steam generator include: Obtain the parallelism between the flange face of the pump casing and the end face of the support platform; this step includes: Obtain the Z-axis coordinate values ​​of the centers of multiple bolt countersunk holes on the flange surface of the pump casing in the reproduction coordinate system, and calculate the difference between the maximum and minimum values ​​among the multiple Z-axis coordinate values; The parallelism between the pump casing flange face and the support platform end face is calculated using the following formula: in, The parallelism; The difference; The outer diameter design dimension of the pump casing flange; The design dimension is the cross-sectional diameter of the countersunk hole for the bolt.

11. The method for measuring the connection between the steam generator and the pump casing according to claim 6, characterized in that, The steps for obtaining the docking status of the pump casing and the steam generator include: Obtain the azimuth angle of the centerline of the discharge port pipe of the pump casing; this step includes: Obtain the first projection point obtained by projecting the center of the pump casing's outlet pipe onto the XY plane of the reproduced coordinate system; Obtain the second projection point obtained by projecting the outlet nozzle of the steam generator onto the XY plane of the reproduced coordinate system; The straight line passing through the first projection point and the second projection point is the azimuth line of the discharge port pipe of the pump casing; Obtain the angle between the X-axis of the reproduction coordinate system and the azimuth line, where the angle is the azimuth angle of the center line of the discharge port pipe.

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