Simulated Reactor Tooling
By designing the main body and auxiliary tooling, precise control of the pipe-through process of the simulated reactor heating rod is achieved, the problem of concentricity of the inner hole of the flat cover and the tube bundle channel is solved, and assembly quality and safety are improved.
Patent Information
- Application Number
- CN201811054300.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2018-09-11
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2038-09-11
AI Technical Summary
During the simulated reactor assembly process, the prior art cannot effectively monitor and control the positional shape and deviation of the heating rod penetrates into the tube bundle channel, resulting in the flat cover inner hole and the tube bundle channel being different from that, affecting assembly quality and safety.
A new simulation reactor tool set consisting of main tooling and auxiliary tooling. The main tooling is composed of two layers of steel plates and support parts. The auxiliary tooling includes a tie-fitting tool and a tube bundle lifting tooling. Through bolt connection and fine-tuning mechanism, it ensures that Centering and accuracy of heating rods during pipe penetration.
It realizes clear observation and precise control of the heating rod through the pipe, ensures the concentricity of the inner hole of the flat cover and the pipe bundle channel, improves assembly quality and safety, and solves the problems of abnormal scratches and deviations during the pipe penetration process.
Smart Images
Figure CN110890164B_ABST
Abstract
Description
Technical Field
[0001] The novel simulated reactor tooling is a nuclear reactor test platform, a device for simulating the process assembly of the reactor assembly process, especially a tooling for simulating the assembly process of the heating rod of the reactor test platform being installed into the inner hole of the flat cover and entering the tube bundle channel. Background Art
[0002] During the assembly process of the simulated reactor, construction workers are required to carry out collaborative work such as assembly, lifting, flipping, welding, etc. In order to ensure the safety of construction workers and the quality of product assembly, and to successfully complete the assembly tasks, simulated reactor assembly tools must be used at this time. The core technology of the simulated reactor assembly is to ensure that 199 heating rods are smoothly inserted from top to bottom into the inner hole of the flat cover and the tube bundle channel (the heating flow channel is composed of 199 steel pipes of Φ42X1.5, and each steel pipe is welded with three positioning grids inside, and the positioning grids are distributed in the upper, middle and lower positions of the steel pipe). The heating rod tube insertion process should be smooth, without stagnation or collision, and there should be no abnormal scratching or other abnormal noises during the process. Therefore, when assembling, we must focus on how to complete the process control of the tube insertion alignment and complete the heating rod tube insertion with high quality and high standards.
[0003] Under normal circumstances, the assembly of simulated reactors is completed independently only through the main tooling, and it completely relies on processing accuracy to ensure the assembly quality. It has great limitations and cannot fully meet the core technical requirements of simulated reactors. When the heating rod passes through the tube bundle channel from the inner hole of the flat cover, the position and shape of the heating rod and the pipeline cannot be monitored during the process, and the specific deviation of the heating rod in the pipeline cannot be checked. Therefore, the concentricity of the 199 inner holes of the flat cover and the 199 inner holes of the tube bundle channel cannot be guaranteed. If some of the 199 inner holes are not concentric, there is no remedial measure. Therefore, relying solely on processing accuracy to ensure assembly quality has low reliability and high risk.
[0004] The design of the simulated reactor tooling is an optimization of the entire assembly details. It solves the manufacturing difficulties, ensures the core technical requirements, effectively improves the professional level of assembling simulated reactors, and provides support for the subsequent quantitative manufacturing and application of simulated reactors. In order to overcome the difficult problem of controlling the pipe threading process of the simulated reactor, ensure the concentricity of the 199 inner holes of the flat cover and the 199 inner holes of the tube bundle channel, and further improve the assembly quality of the simulated reactor, we urgently need to design a new set of simulated reactor tooling. Summary of the invention
[0005] Based on the above background and reasons, the present invention provides a new set of simulated reactor tooling. The tooling consists of a main tooling and an auxiliary tooling. The design fully reflects the practicality and flexibility of the application, and realizes the grasp and control of the centering and alignment of the heating rod during the pipe threading process, which has certain reference significance.
[0006] The novel simulated reactor tooling of the present invention is composed of a main tooling and an auxiliary tooling, and is characterized in that: the main tooling is divided into two layers, each layer is composed of a flat steel plate and a support member for holding up the steel plate, the support member is composed of a steel pipe and a bottom plate welded to the end face of the steel pipe, the support member of one layer is connected to the bottom plate and the steel plate of the layer by bolts to form a fixed connection, and the bolts of the next layer are also passed through the bottom plate holes of the support members of the upper layer to form a fixed connection, and are assembled into the entire tooling main body frame; wherein the upper steel plate and the lower steel plate both have a circular hole in the middle, the diameter of the circular hole is larger than the outer diameter of the simulated reactor cylinder, and there are connecting holes around the circular hole of the lower steel plate for docking with the ring plate hole of the simulated reactor; the auxiliary tooling includes an alignment jig seated on the upper surface of the original hole of the upper steel plate, a nut fixed to the upper steel plate and a bolt matched with the nut, the front end of the bolt corresponds to the side of the alignment jig, and the middle of the alignment jig is provided with a through hole for passing the heating rod and a blind hole larger than the through hole and matched with the lower end of the flat cover.
[0007] The principle of the present invention: 1. The main tooling is divided into two layers from a macroscopic point of view, and each layer is laid with a steel plate. The steel plate is supported by a support member (composed of a steel pipe and a welded bottom plate), and the support members are connected by bolts to assemble into the entire tooling main frame. The upper steel plate and the lower steel plate both have a circular hole in the middle, and the diameter of the circular hole is larger than the simulated reactor cylinder to ensure that the cylinder passes through the steel plate smoothly. In addition, the lower steel plate has a circle of small circular holes for docking with the simulated reactor ring plate holes (the ring plate is the carrier of the stack), so that the main tooling carries the entire simulated reactor. 2. The application of auxiliary tooling is based on the main tooling, and they are all independent individuals, including the alignment jigs for the inner holes of the flat cover and the inner holes of the tube bundle, nuts and matching bolts, and there may also be tube bundle lifting tooling. When testing whether the inner hole of the flat cover is concentric with the tube bundle channel, first simulate the reactor tube bundle passing through the circular hole of the lower steel plate. The tube bundle can be placed with a ring plate around the circular hole of the lower steel plate, or the bottom of the tube bundle can be placed on the ground of the main tooling. Place the alignment jig of the flat cover and the inner hole around the circular hole of the upper steel plate, and fine-tune the alignment jig by rotating the bolts of the movable nut. Place the flat cover in the middle and upper part of the alignment jig, and the lower end of the flat cover is matched with the blind hole of the alignment jig and placed in the corresponding position, and the concentricity between the alignment jig and the inner hole of the flat cover and the tube bundle pipe is fine-tuned by rotating the bolts. Through the application of the main tooling and auxiliary tooling, we can clearly observe the speed and strength of the heating rod penetrating the tube bundle from top to bottom, accurately grasp and control the centering of each heating rod in the tube bundle, complete the heating rod penetration test, and ensure the quality of the heating rod penetrating the tube bundle after the finished product of the stack assembly.
[0008] The auxiliary tooling also includes a tube bundle lifting tooling arranged on the outside of the tube bundle. The tube bundle lifting tooling is arranged on the outside of the tube bundle, and can be used as a lifting device for lifting, as a protective device for protecting the outside of the tube bundle, and as a bracket for placing the tube bundle. The tube bundle lifting tooling preferably has at least three lifting rods, with lifting ears on the lifting rods, and the inner side of the lifting rods has a bayonet corresponding to the circular edge of the orifice plate of the tube bundle, and connecting rods are connected between the lifting rods. In this way, the inner side of the lifting rod has a bayonet corresponding to the circular edge of the orifice plate of the tube bundle, which is stuck on the outer end of the tube sheet of the tube bundle. The hanging rods are connected and fixed to each other by connecting rods, that is, they can be used as a lifting device for lifting through the lifting ears, and can also be fixed on the outside of the tube bundle as a protective device for protecting the outside of the tube bundle. The three hanging rods are distributed on the outside of the tube bundle and connected as a whole, and can also be used as a bracket for placing the tube bundle. In particular, when the lower ends of the three hanging rods are lower than the tube bundle, they can also be used as supporting components placed on the ground or on a pre-installed platform. It is best to fix a nut on the ground at the lower end of the main tooling, and the front end of the bolt that matches the nut corresponds to the outer edge of the tube bundle or the outer side of the tube bundle lifting tooling, so as to fine-tune the overall position of the tube bundle and ensure the accuracy of the upper and lower alignment. It is best to have a pre-installed platform at the lower end of the main tooling that docks with the bottom of the tube bundle lifting tooling, which is more convenient for placing the reactor and tube bundle and other components. In this way, the pre-installed platform can also be fixed with a nut, and the front end of the bolt that matches the nut corresponds to the outer edge of the tube bundle or the outer side of the tube bundle lifting tooling, so as to fine-tune the overall position of the simulated reactor and tube bundle and other components and ensure the accuracy of the upper and lower alignment.
[0009] The design of the new simulated reactor tooling of the present invention simulates and optimizes the entire assembly details for the simulated reactor and the tube bundle, especially for the subsequent assembly accuracy of the heating rod. It solves the difficulty of whether the set manufacturing accuracy can meet the assembly requirements, provides a guaranteed simulation tooling, solves the core technical requirements, effectively improves the professional level of assembling simulated reactors, and provides assistance for the subsequent quantitative manufacturing and application of simulated reactors. It also overcomes the difficult problem of controlling the process of pipe penetration in simulated reactors, ensures the concentricity of the inner hole of the flat cover and the inner hole of the tube bundle channel, and further improves the assembly quality of the heating rod of the simulated reactor. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The schematic diagram of the novel simulated reactor tooling of the present invention after being provided with a tube bundle is shown.
[0011] Figure 2 A schematic diagram showing the novel simulated reactor tooling of the present invention with tube bundles and flat covers installed and heating rods inserted therein is shown.
[0012] Figure 3 The schematic diagram and cross-sectional view of the tube bundle lifting tooling suspension rod structure of the auxiliary tooling of the novel simulated reactor tooling of the present invention are shown.
[0013] Numbers in the figure: 1-lower support (also called lower support), 2-lower steel plate, 3-upper support (also called middle support), 4-upper steel plate (also called middle steel plate), 5-upper support, 6-I-beam, 7-lifting ear, 8-support connecting bolt assembly, 9-middle reinforcement support, 10-nut, 11-adjusting bolt, 12-alignment jig for the inner hole of the flat cover and the inner hole of the tube bundle, 13-tube bundle lifting tooling, 14-bottom reinforcement support, 15-preinstallation platform. DETAILED DESCRIPTION
[0014] As shown in the attached drawings, the new type of simulated reactor tooling of the present invention comprises a main tooling and an auxiliary tooling. The main tooling is divided into two layers, each layer is composed of a flat steel plate and a support member for holding up the steel plate, the support member is composed of a steel pipe and a bottom plate welded to the end face of the steel pipe, the support member of one layer is connected to the bottom plate and the steel plate of the layer by bolts to form a fixed connection, and the bolts of the next layer are also passed through the bottom plate holes of the support members of the previous layer to form a fixed connection, and are assembled into the entire tooling main body frame; wherein the upper steel plate and the lower steel plate both have a circular hole in the middle, the diameter of the circular hole is larger than the outer diameter of the simulated reactor cylinder, and there are connecting holes around the circular hole of the lower steel plate for docking with the ring plate hole of the simulated reactor; the auxiliary tooling comprises an alignment jig seated on the upper surface of the original hole of the upper steel plate, a nut fixed to the upper steel plate and a bolt matched with the nut, the front end of the bolt corresponds to the side of the alignment jig, and the middle of the alignment jig is provided with a through hole for passing the heating rod and a blind hole larger than the through hole and matched with the lower end of the flat cover.
[0015] With regard to the design concept of the new simulated reactor tooling, we have clarified the design direction and will then carry out the specific implementation of the invention. Figure 1As shown. From a macroscopic point of view, the main tooling is divided into two layers, each layer is laid with a steel plate, and the steel plate is supported by supports (composed of steel pipes and welded bottom plates), and the supports are connected by bolts to assemble into the main frame of the entire tooling. The upper and lower steel plates both have circular holes in the middle, and the diameter of the circular holes is larger than the simulated reactor cylinder to ensure that the cylinder passes through the steel plate smoothly. In addition, the lower steel plate has a circle of small circular holes for docking with the simulated reactor ring plate holes (the ring plate is the carrier of the stack), so that the main tooling carries the entire simulated reactor. 2. The application of auxiliary tooling is based on the main tooling, and they are all independent individuals, including the alignment jigs for the inner holes of the flat cover and the inner holes of the tube bundle, nuts and matching bolts, and tube bundle lifting tooling. When testing whether the inner hole of the flat cover is concentric with the tube bundle channel, first simulate the reactor tube bundle passing through the circular hole of the lower steel plate, and place the flat cover and the alignment jig of the inner hole around the circular hole of the lower steel plate. The alignment jig is fine-tuned by rotating the bolt of the movable fitting nut, and the flat cover is placed in the middle and upper part of the alignment jig. The lower end of the flat cover is matched with the blind hole of the alignment jig and is placed in the corresponding position. The concentricity between the alignment jig and the inner hole of the flat cover and the tube bundle pipeline is fine-tuned by rotating the bolt. This specific implementation example adopts the tube bundle lifting jig as an auxiliary jig, and a pre-installed platform (15) is also set under the main jig for placing the assembly of the tube bundle and the tube bundle lifting jig. Through the application of the main tooling and auxiliary tooling, we can clearly observe the speed and strength of the heating rods penetrating into the tube bundle from top to bottom, accurately grasp and control the centering of the 199 heating rods in the tube bundle, complete the heating rod penetration test, and ensure the quality of the heating rods penetrating into the tube bundle after the stack is assembled.
[0016] In order to have a clearer understanding of the simulated reactor structure design, we will give an in-depth introduction from two aspects: the main tooling and the auxiliary tooling.
[0017] 1) Design of the main tooling
[0018] The main purpose of the main tooling is to support the entire simulated reactor body and assist in the application of auxiliary tooling, so safety and practicality are the key considerations in the design. The main tooling support parts are all designed with steel pipe + bottom plate, and each support part is connected with a strength level 8.8 M24X100 bolt assembly (8). The bottom support part (1) is welded by a Φ219mmX24mm steel pipe and a 438mmX438mmX30mm bottom plate, and the middle support part (3) and the upper support part (5) are respectively welded by a Φ168mmX20mm steel pipe and a 438mmX438mmX10mm bottom plate. Because the bottom support is subjected to greater force, the material strength used is higher than that of the middle support and the upper support.
[0019] The lower steel plate (2) and the upper steel plate (4) of the main tooling are also load-bearing parts. They have the same outer dimensions, both of which are 2738mmX2738mmX50mm, but due to the different load-bearing parts, there are also differences in structure. A circular hole channel is opened in the middle of the lower steel plate, and the diameter of the circular hole is Φ1350mm. A circle of 16XΦ40 and PCD1640 small circular holes are opened around the circular hole for docking the simulated reactor body ring plate hole; a circular hole channel is also opened in the middle of the upper steel plate, and the diameter of the circular hole is Φ1290mm. Eight nuts (10) for adjustment are evenly welded around the circular hole for centering and aligning the jig. Since the lower steel plate bears the simulated reactor body assembly, and the upper steel plate bears the jig for aligning the inner hole of the flat cover and the inner hole of the tube bundle, in order to enhance the bearing strength, we have added lower reinforcing support members (14) and middle reinforcing support members (9) respectively.
[0020] At the same time, considering the personal safety of the operator, we installed a guardrail on the top layer of the entire supporting tooling using 200X200mm H-shaped steel (6), and welded lifting ears (7) at the four corners of the H-shaped steel to facilitate the installation and lifting of the entire main tooling.
[0021] 2) Design of auxiliary tooling
[0022] The auxiliary tooling mainly considers the design of the jig (12) for aligning the inner hole of the flat cover with the inner hole of the tube bundle and the jig for lifting the tube bundle (13). The outer dimensions of the jig for aligning the inner hole of the flat cover with the inner hole of the tube bundle are similar to the plane dimensions on the outer cylinder of the simulated reactor. The jig has an outer circle dimension of Φ1385 and a height of 80 mm. 4-M56X4 threaded holes are evenly arranged at the position of Φ1215 on the plane, with a hole depth of 50 mm. The sizes of the middle openings of the jig are Φ954 mm and Φ1028 mm respectively, wherein Φ954 mm is a through hole, Φ1028 mm is a non-through hole, and the boring depth is 60 mm. The jig is used to support the flat cover and dock it with it, and ensure that the outer flange of the inner cylinder is seated in the jig.
[0023] The design of the tube bundle handling tooling is realized according to the overall structure of the tube bundle frame. The tube bundle handling tooling consists of four hangers and connecting rods between the hangers. The hangers are welded from two steel plates, one of which (1550mmX90mmX30mm) is slotted at the upper, middle and lower positions respectively, and its slot positioning dimensions correspond to the positioning dimensions of the tube bundle tube sheet to ensure that the upper, middle and lower tube sheets are connected to the slots; this steel plate is vertically welded on the longitudinal center line of one side of the other steel plate, and the other side of the other steel plate (1550mmX120mmX30mm) is flatly welded with two Φ25 lifting ears to facilitate the installation and disassembly of the tube bundle assembly. The function of the tube bundle handling tooling is that when the tube bundle is assembled, the four hangers are distributed and clamped on the general periphery of the tube bundle, and connected and fixed with connecting rods (the two ends of the connecting rod can be spot welded to the corresponding hangers respectively, and the welding points can be cut off when disassembly is required), as a lifting and flipping tube bundle frame.
[0024] In addition, in order to ensure the concentricity accuracy requirements of the internal parts alignment jig and the tube bundle during the assembly process, we added positioning nuts (10) and adjusting bolts (11) around the internal parts alignment jig and the tube bundle. The nuts (10) are distributed and fixed on the steel plates around the alignment jig and on the pre-installed platform around the lower end of the tube bundle. The front ends of the respective bolts (11) are in corresponding contact with the circumference of the alignment jig and the circumference of the lower end of the tube bundle (or the outside of the tube bundle lifting tool). In this way, when we are aligning, we can fine-tune the concentricity of the internal parts alignment jig and the tube bundle by turning the adjusting bolts to ensure the accuracy requirements of the heating rod when it is inserted into the tube bundle.
[0025] In terms of the overall height and width, we used CAD to perform assembly simulation based on the theoretical size requirements of the simulated reactor drawings and ultimately determined the size height of the simulated reactor tooling (see Figure 2 ).
[0026] After the plan of the tooling is determined, the drawings are designed, and the finished products are delivered, it is only necessary to test the effectiveness of the tooling during the actual construction process.
[0027] After application, we realized the working principle and met the core technical requirements of simulated reactor assembly. Practice has proved that the simulated reactor tooling is practical, safe, reliable and flexible, and has been unanimously praised by owners and construction workers.
Claims
1. A simulated reactor tooling, comprising a main tooling and an auxiliary tooling, characterized in that: The main tooling is divided into two layers, each layer is composed of a flat steel plate and a support member that holds up the steel plate. The support member is composed of a steel pipe and a bottom plate welded to the end face of the steel pipe. The support member of one layer is connected to the bottom plate and the steel plate of this layer by bolts to form a fixed connection. The bolts of the next layer also pass through the bottom plate holes of the support member of the upper layer to form a fixed connection, and are assembled into the entire main tooling frame; the upper and lower steel plates both have circular holes in the middle, and the diameter of the circular holes is larger than the outer diameter of the simulated reactor cylinder. There are also connecting holes around the circular holes of the lower steel plate for docking with the ring plate holes of the simulated reactor; the auxiliary tooling includes an alignment jig seated on the upper circular holes of the upper steel plate, a nut fixed to the upper steel plate and a bolt matched with the nut, the front end of the bolt corresponds to the side of the alignment jig, and the alignment jig is used to fix the holes. The middle part of the main mold is provided with a through hole for passing the heating rod and a blind hole larger than the through hole and matched with the lower end of the flat cover; the auxiliary tooling also has a tube bundle lifting tooling arranged on the outside of the tube bundle, and the tube bundle transfer tooling is composed of four hangers and connecting rods between the hangers; the hangers are welded from two steel plates, wherein the first steel plate has grooves at the upper, middle and lower positions respectively for docking with the upper, middle and lower tube sheets of the tube bundle, the first steel plate is vertically welded on the longitudinal center line of one side of the second steel plate, and two lifting ears with a diameter of 25mm are flatly welded on the other side of the second steel plate; the lower end of the main tooling is provided with a pre-installed platform docking with the bottom of the tube bundle lifting tooling; the pre-installed platform is fixed with nuts, and the front end of the bolts matching the nuts corresponds to the outer edge of the tube bundle or the outer side of the tube bundle lifting tooling.