An offshore floating reactor pressure vessel turning platform and an integrated test platform

Abstract

The present invention relates to an offshore floating reactor pressure vessel turning frame and an integrated test platform. The turning frame includes a bracket, and further includes a support platform mounted above the bracket through a rotating shaft, a turning drive mechanism for driving the support platform to turn, and a plurality of limit clamping plates arranged on the bracket. The support platform is mounted on the bracket in a manner that it can rotate around the central axis of the rotating shaft; the integrated test platform further includes a pressure vessel, a hydraulic pump station, and a pressure storage tank for storing energy generated during the intermittent operation of the hydraulic pump station. The present invention can realize the automatic turning of the pressure vessel and can stop the support platform at any angle, reducing the number of on-site hoisting times and facilitating operations such as the installation, maintenance, and welding of the internal equipment of the pressure vessel.

Description

Technical Field

[0001] The present invention relates to a turnover gantry and an integrated test platform for a marine floating reactor pressure vessel, belonging to the technical field of marine floating nuclear power plants. Background Art

[0002] The marine floating reactor pressure vessel is the core equipment of a nuclear power plant. When installing, conducting a hydrostatic test, and performing a cold test on the pressure vessel, morphological conversion operations such as turning over the pressure vessel are required. Due to the large volume and mass of the marine floating reactor pressure vessel, the diameter of a small pressure vessel is between φ6000mm and φ12400mm, and the maximum weight can reach 400T. Traditional turnover methods all rely on a pit and multiple large-tonnage sling trucks to turn the pressure vessel from a horizontal transportation state to a vertical installation state, and this process requires the coordination and cooperation of multiple departments to complete.

[0003] The coordination and cooperation of multiple departments affect the efficiency of the test, and a pit needs to be prepared, which requires high requirements for the test site. At the same time, a large amount of manual cooperation is required, which is very dangerous, the construction safety is poor, and the labor cost is high; the installation method using multiple sling trucks requires an installation reference and one or more positioning devices to assist in installation, and the real-time adjustment of the turnover angle of the pressure vessel cannot be achieved during installation; moreover, the cooperation of multiple large-tonnage sling trucks is prone to error accumulation, which is not conducive to the installation and debugging of equipment. The pressure vessel is also prone to shaking during the turnover process, resulting in problems such as improper equipment installation and low installation accuracy; when conducting a hydrostatic test and a cold test on the pressure vessel after turning it in place for the marine floating reactor pressure vessel, the pressure test equipment cannot be transferred synchronously with the pressure vessel, and usually, the pressure test equipment needs to be assembled and tested on site, resulting in a long test preparation and overall assembly time, and the steps are cumbersome. Summary of the Invention

[0004] The purpose of the present invention is to provide a new technical solution to improve or solve the technical problems existing in the above-mentioned prior art.

[0005] The present invention provides a turnover gantry for a marine floating reactor pressure vessel, including a bracket, and further including a support platform installed above the bracket through a rotating shaft, a turnover driving mechanism for driving the support platform to turnover, and a plurality of limit clamping plates arranged on the bracket. The support platform is installed on the bracket in a manner that can rotate around the central axis of the rotating shaft, and a plurality of the limit clamping plates are all slidably installed on the bracket.

[0006] Further, the flipping drive mechanisms are provided on both sides of the support platform. Each flipping drive mechanism includes a motor, a speed reducer connected to the motor through a coupling, and a transmission gear set. The primary gear of the transmission gear set is installed on the output shaft of the speed reducer. The final gear is a semi-circular gear, and the straight side of the semi-circular gear is fixedly attached to the support platform. The intermediate gears of the transmission gear set are supported on a bracket through a rotating shaft.

[0007] Further, a limiting stop block is provided at the end of the limiting clamping plate, and the inner shape of the limiting stop block is adapted to the outer shape of the pressure vessel.

[0008] Further, a lead screw motor installed on the limiting clamping plate is also included. The limiting clamping plate is installed on the bracket through a guide rail, and driven by the lead screw motor, the limiting clamping plate slides along the guide rail.

[0009] Further, the limiting clamping plate includes a left limiting clamping plate, a right limiting clamping plate, and a rear limiting clamping plate. The left limiting clamping plate and the right limiting clamping plate are correspondingly arranged on both sides of the support platform, and the rear support clamping plate is arranged at the rear end of the support platform.

[0010] Further, a chuck for clamping the cylinder body or head of the pressure vessel is also provided on the support platform. The chuck is installed on the support platform through a slewing bearing.

[0011] Further, the clamping range of the chuck is adjustable and can clamp circular or arc-shaped workpieces with diameters between φ1500mm and φ3450mm.

[0012] Further, an inspection platform staircase is also provided on one side of the bracket.

[0013] Further, a load-bearing tooling for supporting the weight of the pressure vessel and an anti-slip fixing tooling are detachably installed on the support platform.

[0014] The present invention also discloses an integrated test platform for a marine floating reactor pressure vessel, which includes the marine floating reactor pressure vessel flipping stand as described in any one of the above, and further includes a pressure vessel, a hydraulic pump station, and a pressure storage tank for storing energy generated during the intermittent operation of the hydraulic pump station. The pressure vessel is arranged on the support platform, the hydraulic pump station and the pressure storage tank are installed at the bottom of the frame, and the hydraulic pump station is connected to the pressure vessel through a pipeline.

[0015] The beneficial effects of the present invention are:

[0016] 1. The offshore floating stack pressure vessel turnover stand of the present invention can realize automatic turnover of the pressure vessel and stop the supporting platform at any angle, thereby reducing the number of on-site hoisting times and facilitating the installation, maintenance and welding of the internal equipment of the pressure vessel. In addition, the limit clamp can not only serve as a locking mechanism after the pressure vessel is moved into place, but also serve as a maintenance platform to facilitate maintenance personnel to install and maintain the equipment on the pressure vessel on the platform, thereby improving the accuracy of installing the equipment on the pressure vessel in place.

[0017] 2. The straight edge of the semicircular gear of the present invention is fixedly attached to the bottom of the support platform, and the straight edge of the semicircular toothed disk forms a flipping force arm to support the flipping of the support platform, and the flipping drive mechanism is provided on both sides of the support platform to form a flipping force arm on both sides of the support platform. The flipping torque formed between the support platform and the semicircular toothed disk is 10000KN·m, thereby realizing the smooth flipping of a pressure vessel weighing up to 400T. It has been verified by engineering practice that this technology reduces the risks caused by shaking and impact of the pressure vessel when flipping by a lifting ring car, improves construction safety, and the equipment can adjust the flipping angle of the pressure vessel in real time according to the installation reference, and the adjustment accuracy of the flipping angle can reach the millimeter level.

[0018] 3. The present invention can realize the installation and flipping of pressure vessels of various diameters and lengths on the support platform by replacing the container fixing tooling, and has the advantage of strong versatility.

[0019] 4. The support platform of the present invention is also provided with a chuck installed through a slewing bearing, so that the chuck can rotate 360 ​​degrees, and the cylinder or head with a diameter in the range of φ1500mm-φ3450mm can be clamped on the chuck, which is convenient for workers to perform all-round maintenance or welding.

[0020] 5. The container fixing tooling of the present invention includes a load-bearing tooling and a fixing tooling, which can not only realize the fixing function of the pressure container and prevent the pressure container from sliding during the turning process, but also has the function of bearing the weight of the pressure container.

[0021] 6. The offshore floating stack pressure vessel integrated test platform of the present invention not only has a flipping mechanism of the pressure vessel to realize the rapid flipping function of the vessel, but also has a hydraulic pump station for pressurization equipment during water pressure tests and cold state tests. During the integrated equipment test, the water source and the pressure vessel can be connected through pipelines to quickly realize the experimental deployment, greatly improving the experimental efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of the pressure vessel installed on the supporting platform;

[0023] Figure 2 Partial structural schematic diagram of the support platform driven by the flipping drive mechanism of the present invention in the vertical state;

[0024] Figure 3 Side view of the installation of the semi-circular gear disc when the support platform of the present invention is in the tree branch state;

[0025] Figure 4 Structural schematic diagram of the limit clamping plate of the present invention;

[0026] Figure 5 Structural schematic diagram of the chuck clamping the head of the present invention;

[0027] Figure 6 Structural schematic diagram of the support platform of the present invention in the horizontal state;

[0028] Figure 7 Structural schematic diagram of the support platform of the present invention in the inclined state;

[0029] Figure 8 Structural schematic diagram of the support platform of the present invention in the vertical state;

[0030] Figure 9 Structural schematic diagram of the limit clamping plate locking the pressure vessel of the present invention;

[0031] Figure 10 Top view of the limit clamping plate locking the pressure vessel of the present invention;

[0032] Figure 11 Top view of the second specific embodiment of the present invention;

[0033] In the figure, 1, pressure vessel; 2, left limit clamping plate; 3, rear limit clamping plate; 4, bracket; 5, anti-slip fixing tooling; 501, fixing seat; 502, first fixing clamp ring; 503, second fixing clamp ring; 6, head; 7, load-bearing tooling; 8, chuck; 9, support platform; 10, flipping drive mechanism; 101, primary gear; 102, intermediate gear; 103, final gear; 104, motor; 105, reducer; 11, hydraulic pump station; 12, right limit clamping plate; 13, inspection platform staircase; 14, lead screw motor; 15, limit stop block; 16, left rotating shaft; 17, right rotating shaft. Specific embodiments

[0034] The principles and features of the present invention are described below in conjunction with examples. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. Specific embodiment one:

[0036] As Figures 1 to 4As shown, in the first embodiment, the present invention discloses an offshore floating reactor pressure vessel turning platform, which includes a bracket 4, and further includes a support platform 9 installed above the bracket 4 through a rotating shaft, a turning drive mechanism for driving the support platform 9 to turn, and a plurality of limit clamping plates arranged on the bracket 4. The support platform 9 is installed on the bracket 4 in a manner that it can rotate around the central axis of the rotating shaft, and a plurality of the limit clamping plates are all slidably installed on the bracket 4.

[0037] In addition, in a specific embodiment,

[0038] When the pressure vessel is installed on the support platform and in a vertical state, a plurality of the limit clamping plates are located on the periphery of the pressure vessel. The rotating shaft includes a left rotating shaft 16 and a right rotating shaft 17. One end of the left rotating shaft 16 and the right rotating shaft 17 are respectively rotatably connected to both sides of the bracket 4 through bearings. The other ends of the left rotating shaft 16 and the right rotating shaft 17 are respectively fixedly connected to the left and right sides of the support platform 9, and the central axes of the left rotating shaft 16 and the right rotating shaft 17 coincide. The support platform 9 can rotate around the central axis of the rotating shaft.

[0039] After the pressure vessel 1 is installed on the support platform 9, the turning of the pressure vessel can be realized, and the support platform can be stopped at any angle by starting and stopping the turning drive mechanism. In addition, a limit stop 15 with a limit groove is provided at the end of the limit clamping plate. The shape of the limit groove is adapted to the outer shape of the pressure vessel 1. When the pressure vessel 1 is turned to a vertical state, the limit clamping plate moves close to the pressure vessel 1 and locks it. The limit clamping plate can not only be used as a locking mechanism after the pressure vessel 1 moves in place, but also can be used as a maintenance platform to facilitate maintenance personnel to install and maintain the equipment on the pressure vessel 1 on the platform.

[0040] Such as Figure 2 、 3As shown in FIGS. 4 or 5, a load-bearing tooling 7 and two anti-slip fixing toolings 5 are detachably installed on the support platform 9. Of course, the number of the load-bearing tooling and the anti-slip fixing tooling 5 can also be more or less, as long as the pressure vessel 1 can be firmly fixed on the support platform 9. The anti-slip fixing tooling 5 includes a fixing seat 501, a first fixing clamp ring 502 arranged on the fixing seat 501, and a second fixing clamp ring 503 installed above the first fixing clamp ring 502 in an openable and closable manner. The pressure vessel 1 is clamped between the first fixing clamp ring 502 and the second fixing clamp ring 503. The installation distance of the two anti-slip fixing toolings 5 on the support platform 9 is determined according to the length of the pressure vessel 1. In principle, when the pressure vessel 1 is installed on the support platform 9, the two anti-slip fixing toolings 5 should be respectively close to both ends of the pressure vessel 1 and fix it; the load-bearing tooling 7 is a load-bearing block arranged at the bottom of the pressure vessel 1, and the load-bearing tooling 7 is located between the two anti-slip fixing toolings 5 for supporting the weight of the pressure vessel 1.

[0041] As Figure 3As shown, a set of the flipping drive mechanisms 10 are provided on both sides of the support platform 9. The flipping drive mechanism 10 includes a motor 104, a speed reducer 105 connected to the motor 104 through a coupling, and a transmission gear set. The primary gear 101 of the transmission gear set is installed on the output shaft of the speed reducer. The final gear 103 is a semi-circular gear. One side of the semi-circular gear is an arc-shaped rim with teeth, and the other side of the semi-circular gear is a straight edge connected to the arc-shaped rim. The central angle of the arc-shaped rim of the semi-circular gear is 180 degrees. The straight edge of the semi-circular gear is fixedly attached to the lower part of the support platform 9. The intermediate gear 102 of the transmission gear set meshes with the primary gear 101 and the arc-shaped rim with teeth of the semi-circular gear, and the intermediate gear 102 is supported on the bracket 4 through a rotating shaft. When the motor 104 drives the final gear 103 to rotate through the primary gear 101 and the intermediate gear 102, the final gear 103 drives the support platform 9 to rotate around its rotating shaft. The diameter of the semi-circular gear disk is adapted to the weight and length of the pressure vessel to be flipped. When the diameter of the semi-circular gear disk is φ5000mm, the flipping torque formed between the support platform and the semi-circular gear disk is 10000KN·m, which can enable a pressure vessel with a weight of up to 400T to achieve smooth flipping. Since the final gear 103 is a semi-circular gear, the rotation range of the final gear 103 driving the support platform 9 is between 0° and 90°. The power of the motor is transmitted to the support platform through the transmission gear set 10 by the flipping drive mechanism, so as to realize the smooth automatic flipping of the pressure vessel 1 installed on the support platform 9 from the horizontal state to the vertical state, and can realize flipping and stopping at any angle within the range of 0° to 90°.

[0042] Of course, a semi-circular gear with a central angle of the arc-shaped rim greater than or less than 180 degrees can also be selected according to the need of the rotation angle.

[0043] The limiting clamping plate includes a left limiting clamping plate 2, a right limiting clamping plate 12 and a rear limiting clamping plate 3. The left limiting clamping plate 2 and the right limiting clamping plate 12 are correspondingly installed on both sides of the support platform 9 through guide rails. The rear support clamping plate is installed at the rear end of the support platform 9 through a guide rail. A lead screw motor 14 is installed on each of the left limiting clamping plate 2, the right limiting clamping plate 12 and the rear limiting clamping plate 3. Driven by the lead screw motor 14, the limiting clamping plate slides along its respective guide rail. When the pressure vessel 1 is flipped to the vertical state under the drive of the flipping drive mechanism, the left limiting clamping plate 2, the right limiting clamping plate 12 and the rear limiting clamping plate 3 respectively move close to the pressure vessel 1 along their respective guide rails, locking the pressure vessel 1 transversely and longitudinally. The left limiting clamping plate 2, the right limiting clamping plate 12 and the rear limiting clamping plate 3 can not only play a role in positioning the pressure vessel 1 installed on the support platform 9, but also serve as a maintenance platform for maintenance personnel to perform maintenance on the equipment on the platform.

[0044] As Figure 5 shown, a chuck 8 for clamping the cylinder body or head 6 of the pressure vessel 1 is further provided on the support platform 9. The chuck 8 is installed on the support platform 9 through a slewing support bearing, so that the chuck 8 can rotate 360 degrees, and the cylinder body or head 6 with a diameter in the range of φ1500mm - φ3450mm can be clamped on the chuck 8, facilitating workers to perform all-round maintenance or welding on it.

[0045] A viewing platform staircase 13 is further provided on one side of the bracket 4. Workers can go up to the limiting clamping plate above the bracket 4 through the staircase, facilitating maintenance, repair, etc. of the equipment.

[0046] As Figures 6 to 10 shown, the flipping process of the pressure vessel 1 on the offshore floating reactor pressure vessel flipping gantry is as follows:

[0047] (1) At the beginning of work, it is necessary to first adjust the support platform 9 to a horizontal state, then hoist the pressure vessel 1 onto the support platform 9, and lock the pressure vessel 1 through a fixing tooling.

[0048] (2) Start the motor, flip the pressure vessel 1 fixed on the support platform 9 to a predetermined position through gear transmission and then stop. The support platform 9 can stop at any angle between 0° and 90°. In the first specific embodiment, the support platform 9 stops rotating after flipping to the vertical state.

[0049] (3) The screw motors 14 on the left limit plate 2, the right limit plate 12 and the rear limit plate are started after the motor stops, and push their respective limit plates to move close to the pressure vessel 1 and lock them before stopping. The flipping action is completed, and the equipment can be subsequently inspected, tested and assembled on the limit plates;

[0050] (4) After the test or assembly is completed, the pressure vessel 1 is returned to its original position in the reverse order of the above steps. Specific embodiment 2:

[0052] like Figure 11 As shown, in the specific embodiment 2, the present utility model discloses an integrated test platform for an offshore floating pile pressure vessel, which further includes a pressure vessel 1, a hydraulic pump station 11, and a pressure storage tank for storing energy of the pressure generated when the hydraulic pump station 11 works in the gap, the pressure vessel 1 is arranged on the supporting platform 9, the hydraulic pump station 11 and the pressure storage tank are installed at the bottom of the frame, and the hydraulic pump station 11 is connected to the pressure vessel 1 through a pipeline.

[0053] The hydraulic pump station 11 can be used as a pressure station during a water pressure test or a cold test. The cold test is mainly to pressurize the entire circuit to reach 228 bar to test the pressure bearing capacity of the entire circuit. In addition, when the equipment is subjected to a water pressure test, the hydraulic pump station 11 is connected to the water source and the pressure vessel 1 through a pipeline. The integrated test platform of the offshore floating pile pressure vessel 1 not only has a turnover mechanism of the pressure vessel 1 to realize the rapid turnover function of the vessel, but also has a hydraulic pump station 11 for the boosting equipment during the water pressure test and the cold test, which can quickly realize the experimental deployment and greatly improve the experimental efficiency.

[0054] Through the offshore floating stack pressure vessel flipping stand and integrated experimental platform of the present invention, the pressure vessel 1 can be automatically flipped from a horizontal state to a vertical state, and the supporting platform 9 can be stopped at any angle within the range of 0° to 90°, reducing the number of on-site lifting times and facilitating the installation, maintenance and welding of the internal equipment of the pressure vessel 1. In addition, the limit clamp can not only serve as a locking mechanism after the pressure vessel 1 is moved into place, but also serve as a maintenance platform for maintenance personnel to install and repair the equipment on the pressure vessel 1 on the platform. It has been verified through engineering practice that this technology improves the accuracy of equipment installation, reduces the risks caused by shaking and impact of the pressure vessel 1 when flipped by a lifting ring car, improves construction safety, and also has a hydraulic pump station 11 for pressurization equipment during water pressure tests and cold tests, which can quickly realize experimental deployment and greatly improve experimental efficiency.

[0055] Finally, it should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0056] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An offshore floating nuclear power plant pressure vessel turning bench, comprising a bracket (4), characterized in that, it further comprises a support platform (9) mounted on the bracket (4) through a rotating shaft, a turning drive mechanism (10) for driving the support platform (9) to turn, and a plurality of limit clamping plates arranged on the bracket (4). The support platform (9) is mounted on the bracket (4) in a manner capable of rotating around the central axis of the rotating shaft, and the plurality of limit clamping plates are all slidably mounted on the bracket (4); The turning drive mechanisms (10) are arranged on both sides of the support platform (9). The turning drive mechanism (10) comprises a motor (104), a speed reducer (105) connected to the motor (104) through a coupling, and a transmission gear set. The primary gear (101) of the transmission gear set is mounted on the output shaft of the speed reducer. The final gear (103) of the transmission gear set is a semi-circular gear, and the straight edge of the semi-circular gear is fixedly attached to the support platform (9). The intermediate gear (102) of the transmission gear set is supported on the bracket (4) through a rotating shaft; It further comprises a lead screw motor (14) mounted on the limit clamping plate. The limit clamping plate is mounted on the bracket (4) through a guide rail. Driven by the lead screw motor (14), the limit clamping plate slides along the guide rail; The limit clamping plate comprises a left limit clamping plate (2), a right limit clamping plate (12) and a rear limit clamping plate (3). The left limit clamping plate (2) and the right limit clamping plate (12) are correspondingly arranged on both sides of the support platform (9), and the rear limit clamping plate (3) is arranged at the rear end of the support platform (9).

2. The offshore floating nuclear power plant pressure vessel turning bench according to claim 1, characterized in that, a limit stop block (15) is arranged at the end of the limit clamping plate, and the inner shape of the limit stop block (15) is adapted to the outer shape of the pressure vessel (1).

3. The offshore floating nuclear power plant pressure vessel turning bench according to claim 1, characterized in that, a chuck (8) for clamping the cylinder body or the head of the pressure vessel (1) is further arranged on the support platform (9), and the chuck (8) is mounted on the support platform (9) through a slewing bearing.

4. The offshore floating nuclear power plant pressure vessel turning bench according to claim 3, characterized in that, the clamping range of the chuck (8) is adjustable and can clamp circular or arc-shaped workpieces with a diameter between φ1500mm and φ3450mm.

5. The offshore floating nuclear power plant pressure vessel turning bench according to claim 1, characterized in that, an inspection platform staircase (13) is further arranged on one side of the bracket (4).

6. The offshore floating nuclear power plant pressure vessel turning bench according to claim 1, characterized in that, a load-bearing tooling (7) for supporting the weight of the pressure vessel (1) and an anti-slip fixing tooling (5) are detachably mounted on the support platform (9).

7. An offshore floating nuclear power plant pressure vessel integrated test platform, characterized in that, It includes a turnover stand for the pressure vessel of an offshore floating reactor, which is as described in any one of claims 1-6. It further includes a pressure vessel (1), a hydraulic pump station (11), and a pressure storage tank for storing energy generated by the pressure during the intermittent operation of the hydraulic pump station (11). The pressure vessel (1) is arranged on the support platform (9) of the turnover stand for the pressure vessel of the offshore floating reactor. The hydraulic pump station (11) and the pressure storage tank are installed at the bottom of the bracket (4). The hydraulic pump station (11) is connected to the pressure vessel (1) through a pipeline.

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