Nuclear island reactor building containment integrated construction positioning measurement device and installation method

Abstract

The invention provides a nuclear island reactor building containment integrated construction positioning measurement device and an installation method, and the method comprises the steps: selecting a plurality of measurement sites for the internal construction of a containment, and arranging instrument erection tools on the measurement sites; erecting a total station on a secondary encryption network point outside the containment; a base prism is arranged on the instrument erection tool of the measurement site, and coordinates of the base prism are measured through the total station; a base prism is erected on the secondary encryption net point outside the containment; the base prism of one measurement site is detached, a total station is arranged at the coordinate position of the prism, directional inspection is conducted on the total station through the base prisms of the adjacent measurement sites and the base prisms of the secondary encryption net points, the total station setting of the measurement site is completed, and the total station setting of all the measurement sites is completed according to the operation. The method improves the construction progress while guaranteeing the measurement operation precision, is stable and reliable in the actual application process, and assists the nuclear power plant in efficient and high-quality construction.

Description

Technical field:

[0001] The present invention belongs to the technical field of nuclear power plant nuclear reactor building containment construction, and specifically relates to a nuclear island reactor building containment integrated construction positioning measurement device and installation method, which can also be extended to industrial and civil building construction. Background technology:

[0002] During the construction of the containment of a nuclear power plant, each part of the containment needs to be accurately measured and positioned. During the measurement and positioning work of the containment of a general nuclear power plant, the total station is usually set up on the secondary encrypted network points. After the orientation check is correct, the prism pole is placed on the working surface of the containment, and the coordinates can be measured by directly observing the prism using the total station. However, after the nuclear power plant containment adopts an integrated construction platform, the integrated construction platform wraps the containment in a 360° ring shape, and the secondary encrypted network points cannot communicate with the internal structure of the containment. Therefore, the total station set up on the secondary encrypted network points cannot directly measure the prism pole on the working surface of the containment, and it is necessary to set up heavy viewing holes on the protective net. This will affect the strength of the protective net on the one hand, and on the other hand, it will complicate the construction and reduce the construction efficiency.

[0003] Based on the above, the present invention proposes a nuclear island reactor building containment integrated construction positioning measurement device and installation method to solve the above technical problems. Summary of the invention:

[0004] The purpose of the present invention is to provide a nuclear island reactor building containment integrated construction positioning measurement device and installation method in view of the deficiencies in the prior art. The method adopts a personnel cage and an L-shaped instrument rack to provide a temporary working platform for personnel and instruments, and uses a secondary turning point to perform measurement operations, thereby achieving a leap from being unable to carry out measurement operations to being completed with quality and quantity after the containment adopts an integrated construction platform.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] (1) The present invention provides an installation method for an integrated construction positioning measurement device for a nuclear island reactor building containment, the method specifically comprising: selecting a plurality of measurement sites for internal construction of the containment above the containment under construction, and setting up instrument installation tools at the measurement sites; setting up a total station at a secondary encrypted network point outside the containment; setting up a base prism on the instrument installation tool at the measurement site, and measuring the base prism coordinates of all measurement sites by the total station at the secondary encrypted network point; setting up a base prism at the secondary encrypted network point outside the containment; removing the base prism at one of the measurement sites, and setting up a total station at the prism coordinates, performing an orientation check on the total station by using the base prism at the adjacent measurement site and the base prism at the secondary encrypted network point, completing the total station setting of the measurement site, and completing the total station setting of all measurement sites according to this operation.

[0007] Furthermore, the method for selecting the measurement sites includes: conducting on-site surveys, consulting drawings of containment and integrated platform, and selecting measurement sites based on drawings and actual on-site conditions.

[0008] Furthermore, the outer cover of the containment vessel is provided with a protective net, the protective net is provided with a viewing hole, the secondary encrypted network points communicate with each measurement position through the viewing hole; and a viewing hole cover plate is movably installed on the viewing hole.

[0009] Furthermore, the instrument installation tools at two adjacent measuring locations can see through each other.

[0010] Furthermore, an integrated construction platform steel beam is arranged above the containment shell, a construction platform is fixedly arranged above the integrated construction platform steel beam, and the instrument erection tooling is fixedly installed below the construction platform.

[0011] Furthermore, the instrument erection tooling includes an L-shaped instrument frame and a personnel cage; three parallel I-beams are welded to the lower surface of the construction platform, the L-shaped instrument frame is welded and fixed to the I-beams distributed in the middle position, and the personnel cage is welded and fixed to the I-beams distributed on both sides; the base prism or total station is fixedly installed on the L-shaped instrument frame.

[0012] Furthermore, the total station of the secondary encrypted network point measures the base prism coordinates of the measurement location by means of positive and negative mirror measurement, and calculates the average value of the coordinates measured by positive and negative mirror measurement as the final coordinates of the base prism coordinates.

[0013] (ii) The present invention also provides an integrated construction positioning and measuring device for a nuclear island reactor building containment, comprising an instrument erection tooling and secondary encrypted network points; a plurality of the instrument erection tooling are provided and fixed above the containment under construction, a total station or a base prism is fixedly mounted on the instrument erection tooling, and the plurality of instrument erection tooling are evenly distributed; the secondary encrypted network points are used to measure and calibrate the installation coordinates of the total station or the base prism on each instrument erection tooling, the secondary encrypted network points are distributed outside the containment, the secondary encrypted network points are provided with a total station and a base prism, and the secondary encrypted network points have a line of sight with each instrument erection tooling.

[0014] Furthermore, an integrated construction platform steel beam is arranged above the containment shell, a construction platform is fixedly arranged above the integrated construction platform steel beam, and the instrument erection tooling is fixedly installed below the construction platform.

[0015] Furthermore, the instrument erection tooling includes an L-shaped instrument frame and a personnel cage; three parallel I-beams are welded to the lower surface of the construction platform, the L-shaped instrument frame is welded and fixed to the I-beams distributed in the middle position, and the personnel cage is welded and fixed to the I-beams distributed on both sides; the L-shaped instrument frame is distributed in the center of the personnel cage; the base prism or total station is fixedly and detachably installed on the L-shaped instrument frame.

[0016] Beneficial effects of the present invention:

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] (1) The present invention provides a method for installing a nuclear island reactor building containment integrated construction positioning measurement device. The method uses a personnel cage and an L-shaped instrument rack to provide a temporary working platform for personnel and instruments, and uses a secondary turning point to perform measurement operations. This achieves a leap from being unable to carry out measurement operations to being completed with guaranteed quality and quantity after the containment adopts an integrated construction platform.

[0019] (2) In the present invention, the coordinates of the measuring instruments on the instrument installation tooling at each measuring point are accurately measured by setting up secondary encrypted points outside the containment, and the setting of the total station at each measuring point is completed. Then, the construction of each component inside the containment is accurately measured and positioned by the total station at each set measuring point. Only 12 viewing holes need to be drilled in the protective net of the integrated construction platform, which solves the problem of low strength of the protective net and low construction efficiency caused by a huge number of holes in the prior art.

[0020] (3) The present invention improves the construction progress while ensuring the accuracy of measurement operations, greatly shortens the construction period, is stable and reliable in actual application, and helps to build nuclear power plants efficiently and with high quality. Description of the drawings:

[0021] Figure 1 This is a distribution diagram of the locations of the measurement sites in the embodiment of the present invention;

[0022] Figure 2 A three-dimensional rendering of a personnel cage and an L-shaped instrument rack according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of coordinate measurement of an L-shaped instrument stand according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the containment measurement working surface measurement according to an embodiment of the present invention;

[0025] The symbols in the accompanying drawings are:

[0026] 1. Containment vessel outside the reactor building; 2. Containment vessel inside the reactor building; 3. Measurement site; 4. Line of sight between adjacent measurement sites; 5. Personnel cage; 6. L-shaped instrument rack; 7. Containment vessel steel bars; 8. Containment vessel working surface; 9. Steel beams of the integrated construction platform; 10. Total station on the secondary encryption network point; 11. Base prism on the secondary encryption network point; 12. Base prism on the L-shaped instrument rack; 13. Line of sight of the total station measuring prism; 14. Viewing hole of the integrated platform protection net; 16. Total station on the L-shaped instrument rack; 18. Measurement working surface on the containment vessel. Specific implementation method:

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] Example 1

[0029] Reference Figures 1 to 4 , an embodiment of the present invention provides a nuclear island reactor building containment integrated construction positioning and measuring device, including an instrument erection tooling and secondary encryption points.

[0030] like Figure 1 As shown, there are 12 instrument erection tools, which are fixed above the containment under construction. A total station or a base prism is fixedly installed on the instrument erection tools, and the 12 instrument erection tools are evenly distributed, so that the sight lines between two adjacent instrument erection tools are unobstructed.

[0031] like Figure 3 and Figure 4As shown, the secondary encrypted network points are used to measure and calibrate the installation coordinates of the total station or base prism on each instrument installation tool. The secondary encrypted network points are distributed outside the containment shell. The secondary encrypted network points are provided with total stations and base prisms, and the secondary encrypted network points have a line of sight with the 12 instrument installation tools. Since the containment shell is wrapped by the integrated construction platform protection net, which affects the line of sight, in this embodiment, 5cm*5cm viewing holes are set at the protection nets at the corresponding positions of the 12 instrument installation tools (i.e., where the line of sight is blocked), and a movable cover is set on the viewing holes, so that all instrument installation tools maintain a clear line of sight with the secondary encrypted network points through the viewing holes of the integrated construction platform protection net.

[0032] like Figure 2 As shown, in this embodiment, an integrated construction platform steel beam is arranged above the containment, a construction platform is fixedly arranged above the integrated construction platform steel beam, and the instrument erection tooling is fixedly installed below the construction platform. The instrument erection tooling includes an L-shaped instrument frame and a personnel cage, three parallel I-beams are welded on the lower surface of the construction platform, the L-shaped instrument frame is welded and fixed to the I-beam distributed in the middle position, the personnel cage is welded and fixed to the I-beam distributed on both sides, the L-shaped instrument frame is distributed in the center of the personnel cage, and the base prism or total station is fixedly and detachably installed on the L-shaped instrument frame.

[0033] In this embodiment, the coordinates of the measuring instruments on the instrument setting tooling at each measuring point are accurately measured by setting up secondary encrypted points outside the containment, and the setting of the total station at each measuring point is completed. Then, the construction of subsequent components inside the containment is accurately measured and positioned by the total station at each set measuring point. Only 12 viewing holes need to be drilled in the protective net of the integrated construction platform, which solves the problem of low strength of the protective net and low construction efficiency due to the huge number of holes drilled in the prior art.

[0034] Example 2

[0035] Reference Figures 1 to 4 The embodiment of the present invention provides a method for installing a nuclear island reactor building containment integrated construction positioning measurement device, the method specifically comprising:

[0036] Step 1: Selection of measurement sites:

[0037] Step 1.1: On-site investigation;

[0038] Step 1.2: Check the containment and integrated platform drawings;

[0039] Step 1.3: Select 12 measurement sites based on the drawings and actual site conditions. The 12 measurement sites are used to set up personnel cages and L-shaped instrument racks. The L-shaped instrument rack is used to install detection instruments (base prism and total station). The personnel cage and the L-shaped instrument rack are set up in conjunction to assist in the installation and removal of the base prism and total station.

[0040] The L-shaped instrument rack must be in sight with the secondary encrypted network points through the viewing holes of the protection net. Instruments set up at the secondary encrypted network points can measure the coordinates of the L-shaped instrument rack; the personnel cage and the L-shaped instrument rack should have a wide field of view to facilitate measurement and positioning operations in the containment; adjacent L-shaped instrument racks should be in sight with each other so that coordinates can be checked with each other during operation. See the L-shaped instrument rack location diagram Figure 1 .

[0041] Step 2: Prefabrication of the integrated platform protection net through-view hole cover:

[0042] Step 2.1: Design the cover plate of the protective net through the viewing hole, using 15cm*15cm high-density Chevron board;

[0043] Step 2.2: Process the cover plate of the protective net through-hole, print the cover plate in color, and keep the style consistent with the standardized construction requirements on site. The upper opening of the cover plate is easy to install, and the cover plate should be windproof and rainproof. The cover plate should be simple in structure and easy to operate when installed.

[0044] Step 3: Install the personnel cage, L-shaped instrument rack, and personnel ladder:

[0045] Step 3.1: Weld three I-beams at the bottom of the construction platform for welding personnel cages and L-shaped instrument racks;

[0046] Step 3.2: Weld the personnel cage under the I-beam beams on both sides;

[0047] Step 3.3: Weld the L-shaped instrument rack under the I-beam beam in the middle. The L-shaped instrument rack should be at the geometric center of the personnel cage, see Figure 2 .

[0048] Step 4: Opening holes for the integrated platform protection net and installing the viewing hole cover:

[0049] Step 4.1: Set up the total station at the secondary encrypted network point outside the factory building and set up the base prism on the L-shaped instrument stand;

[0050] Step 4.2: Turn on the red laser of the total station and aim it at the center of the base prism at each measuring point;

[0051] Step 4.3: Use wire cutters to cut a 5cm*5cm viewing hole at the red laser point where the light of the protective net is blocked by the total station's red laser, ensuring that the total station and the center of the base prism can see through. The viewing hole of the integrated platform protective net should be cut flat and beautiful to meet the requirements of safe and civilized construction;

[0052] Step 4.4: Install the viewing hole cover plate on the 5cm*5cm viewing hole. The viewing hole cover plate adopts an up-and-down flipping connection method. When in use, flip the cover plate upward to open it, and flip the cover plate downward to close it after use.

[0053] Step 5: L-shaped instrument stand plane coordinate measurement:

[0054] Step 5.1: Set up the base prism on the L-shaped instrument stand;

[0055] Step 5.2: Set up the total station at the secondary encrypted points outside the factory and check the orientation. After checking that everything is correct, aim at the base prism installed on the L-shaped instrument stand at each measuring point;

[0056] Step 5.3: Use the method of positive and negative mirror to measure the coordinates of the base prism, and calculate the average value of the coordinates measured by the positive and negative mirror as the final coordinates of the base prism. The difference between each coordinate should be ≤2mm, and if it exceeds 2mm, it should be measured again;

[0057] Step 5.4: Repeat the above steps to measure the coordinates of all base prisms.

[0058] After measuring the coordinates of all L-shaped instrument racks, set up the total station and base prism on the L-shaped instrument rack and check each other to ensure the accuracy of the L-shaped instrument rack coordinates. Figure 3 .

[0059] Step 6: Setting of total station at each measuring point:

[0060] Step 6.1: Set up the base prism at the secondary encryption point outside the containment;

[0061] Step 6.2: Remove the base prism at one of the measurement sites, set up the total station at the coordinates of this prism, check the orientation of the total station through the base prisms of the adjacent measurement sites and the base prisms of the secondary density points, and complete the total station setup at this measurement site. Set up total stations at the other 11 measurement sites according to the above operations, and complete the total station setup at all measurement sites.

[0062] Step 6.3: After the orientation check of the total station installed on the L-shaped instrument stand at each measurement location is correct, the set total station is used for subsequent positioning measurement operations inside the containment.

[0063] When conducting positioning measurement inside the containment, the L-shaped instrument stand should remain stable to ensure that the instrument is not affected. During the measurement and positioning operation, the secondary encryption points outside the plant should be measured at any time to set up the base prism to check whether the instrument is offset. If the instrument is offset, the orientation check should be carried out again. See the operation diagram Figure 4 .

[0064] The present invention can realize the positioning operation of the containment shell after the containment shell integrated construction platform is installed, when it is impossible to directly set up instruments for measurement and positioning on the secondary encrypted network points. The operation quality of the containment shell construction is guaranteed, the construction cost is saved, the construction process is reasonably arranged, the work efficiency is improved, and the construction period is greatly shortened.

[0065] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A method for installing a nuclear island reactor building containment integrated construction positioning measurement device, characterized in that: The method specifically comprises: Select several measurement sites for internal construction of the containment above the containment under construction, and set up instrument installation tools at the measurement sites; Set up a total station at a secondary encryption point outside the containment vessel; The base prism is set on the instrument setting tooling at the measuring point, and the base prism coordinates of all measuring points are measured by the total station of the secondary density network point; Setting up a base prism on a secondary encryption point outside the containment vessel; Remove the base prism of one of the measurement sites and set up the total station at the coordinates of this prism. Check the orientation of the total station through the base prisms of the adjacent measurement sites and the base prisms of the secondary density points to complete the total station setup of this measurement site. Follow this operation to complete the total station setup of all measurement sites.

2. The installation method of the integrated construction positioning and measuring device for the nuclear island reactor building containment according to claim 1 is characterized in that: The method for selecting the measurement site includes: Conduct on-site surveys, review containment and integrated platform drawings, and select measurement locations based on the drawings and actual site conditions.

3. The installation method of the integrated construction positioning and measuring device for the nuclear island reactor building containment according to claim 1 is characterized in that: The outer cover of the containment vessel is provided with a protective net, the protective net is provided with a viewing hole, and the secondary encrypted network points are in visual communication with each measurement position through the viewing hole; A through-view hole cover plate is movably mounted on the through-view hole.

4. The installation method of the integrated construction positioning and measuring device for the containment of a nuclear island reactor building according to claim 1, characterized in that: The instrument installation tools at two adjacent measuring locations can see each other.

5. The installation method of the integrated construction positioning and measuring device for the nuclear island reactor building containment according to claim 1 is characterized in that: An integrated construction platform steel beam is arranged above the containment shell, a construction platform is fixedly arranged above the integrated construction platform steel beam, and the instrument erection tooling is fixedly installed below the construction platform.

6. The method for installing the integrated construction positioning and measuring device for the containment of a nuclear island reactor building according to claim 4, characterized in that: The instrument erection tooling includes an L-shaped instrument rack and a personnel cage; Three parallel I-beams are welded on the lower surface of the construction platform, the L-shaped instrument frame is welded and fixed to the I-beam distributed in the middle, and the personnel cage is welded and fixed to the I-beams distributed on both sides; The base prism or total station is fixedly mounted on the L-shaped instrument frame.

7. The installation method of the integrated construction positioning and measuring device for the nuclear island reactor building containment according to claim 1 is characterized in that: The total station of the secondary encrypted network point measures the base prism coordinates of the measurement point by means of positive and negative mirror measurement, and calculates the average value of the coordinates measured by the positive and negative mirror measurement as the final coordinates of the base prism coordinates.

8. A nuclear island reactor building containment integrated construction positioning measurement device, characterized in that: Including instrument erection tooling and secondary encryption points; A plurality of instrument erection tools are provided and fixed above the containment vessel under construction, a total station or a base prism is fixedly installed on the instrument erection tools, and the plurality of instrument erection tools are evenly distributed; The secondary encrypted network points are used to measure and calibrate the installation coordinates of the total station or base prism on each instrument installation tooling. The secondary encrypted network points are distributed outside the containment shell. The secondary encrypted network points are equipped with total stations and base prisms, and the secondary encrypted network points have a line of sight with each instrument installation tooling.

9. The integrated construction positioning and measuring device for the containment of a nuclear island reactor building according to claim 8, characterized in that: An integrated construction platform steel beam is arranged above the containment shell, a construction platform is fixedly arranged above the integrated construction platform steel beam, and the instrument erection tooling is fixedly installed below the construction platform.

10. The integrated construction positioning and measuring device for the containment of a nuclear island reactor building according to claim 9, characterized in that: The instrument erection tooling includes an L-shaped instrument rack and a personnel cage; Three parallel I-beams are welded on the lower surface of the construction platform, the L-shaped instrument frame is welded and fixed to the I-beam distributed in the middle, and the personnel cage is welded and fixed to the I-beams distributed on both sides; the L-shaped instrument frame is distributed in the center of the personnel cage; The base prism or total station is fixedly and detachably mounted on the L-shaped instrument frame.

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