Dismounting device for spring of high-pressure driving mechanism of nuclear power station

Abstract

The utility model discloses a dismounting device for a spring of a high-voltage driving mechanism of a nuclear power station. The dismounting device comprises a connecting mechanism, an acting mechanism and an adjusting mechanism, according to the dismounting device for the spring of the high-pressure driving mechanism of the nuclear power station, the first connecting pressing block and the second connecting pressing block are arranged in the spring, and the connecting pressing disc is arranged at the top end of the spring, so that the spring is prevented from being popped up accidentally, the risk that the spring pops up to hurt people and is lost is eliminated, and positioning and guiding in the spring dismounting process are achieved; and the function of preventing the spring from popping up accidentally is achieved, operation safety is guaranteed, and follow-up installation and management of the spring are facilitated. Meanwhile, the lifting device is arranged to disassemble the spring, the adjusting mechanism is arranged to adjust the output force of the acting mechanism, the operation convenience is ensured, the disassembling efficiency is improved, the equipment damage risk is reduced, accurate control over the spring disassembling force is achieved, it is ensured that the spring is not damaged in the disassembling process, and the original performance of the spring is maintained.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant maintenance, and in particular to a disassembly device for springs in high-voltage drive mechanisms of nuclear power plants. Background Technology

[0002] As a crucial component of the high-pressure drive mechanism in nuclear power plants, the spring is a key part of the turbine inlet steam regulation system and requires replacement or maintenance after long-term operation. However, due to the special structure and working environment of the high-pressure drive mechanism, spring disassembly faces numerous difficulties. Traditional disassembly methods often fail to apply precise force, easily damaging the spring and surrounding components, affecting its performance and service life. Furthermore, the lack of effective positioning and guiding devices for the spring during disassembly can easily cause it to pop out, injuring people or being lost, posing safety hazards and hindering subsequent installation and commissioning work. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a disassembly device for springs in high-voltage drive mechanisms of nuclear power plants.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a disassembly device for a spring in a high-voltage drive mechanism of a nuclear power plant, which includes a connecting mechanism, an actuating mechanism and an adjusting mechanism.

[0005] The connecting mechanism includes a connecting pressure plate, a first connecting pressure block, and a second connecting pressure block. The first connecting pressure block and the second connecting pressure block are both connected to the connecting pressure plate. The first connecting pressure block and the second connecting pressure block are disposed inside the spring, and the connecting pressure plate is disposed at the top of the spring.

[0006] The operating mechanism includes at least one lifting device and a drive rod connected to the lifting device, the drive rod being connected to the connecting pressure plate;

[0007] The adjusting mechanism is connected to the actuating mechanism and is used to adjust the output force of the actuating mechanism.

[0008] In some embodiments, the connecting pressure plate has a plurality of adjustment holes for the drive rod to pass through, and the drive rod is connected to the connecting pressure plate by a first fastener.

[0009] In some embodiments, the connecting pressure plate has a groove on the side facing the spring.

[0010] In some embodiments, the groove is provided with a rubber coating.

[0011] In some embodiments, the number of lifting devices is three, and the three lifting devices are evenly arranged about the central axis of the connecting pressure plate.

[0012] In some embodiments, the actuating mechanism further includes a mounting plate connected to the lifting device via a second fastener.

[0013] In some embodiments, the adjusting mechanism includes a first connecting pipe, a hydraulic distributor, a second connecting pipe, and a hydraulic pump;

[0014] The two ends of the first connecting pipe are respectively connected to the hydraulic distributor and the lifting device, and the two ends of the second connecting pipe are respectively connected to the hydraulic distributor and the hydraulic pump.

[0015] In some embodiments, a pressure gauge is provided on the second connecting pipe.

[0016] In some embodiments, the disassembly device further includes a displacement sensor for measuring the displacement of the drive rod.

[0017] In some embodiments, the lifting device is a jack.

[0018] The present invention offers the following advantages: This spring disassembly device for high-pressure drive mechanisms in nuclear power plants prevents accidental spring ejection by placing a first and second connecting pressure block inside the spring and a connecting pressure plate at the top of the spring. This eliminates the risk of injury or loss from spring ejection, provides positioning and guidance during disassembly, prevents accidental spring ejection, ensures operational safety, and facilitates subsequent spring installation and management. Furthermore, a lifting device is used for spring disassembly, and an adjustment mechanism regulates the output force of the actuating mechanism, ensuring ease of operation, improving disassembly efficiency, reducing the risk of equipment damage, and achieving precise control of the spring disassembly force. This ensures the spring is not damaged during disassembly and maintains its original performance. Additionally, this disassembly device has significant advantages in spatial adaptability, enabling efficient operation within the confined spaces of complex high-pressure drive mechanisms, greatly improving operational convenience and efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a spring disassembly device for a high-voltage drive mechanism in a nuclear power plant, according to one embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the connecting mechanism and the acting mechanism in one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the connecting pressure plate in one embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the spring in the disassembly process of a high-voltage drive mechanism for a nuclear power plant, according to one embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of a spring in the initial state of a high-voltage drive mechanism for a nuclear power plant, according to one embodiment of the present invention. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the environmental monitoring device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] Please see Figures 1 to 5This invention relates to a spring disassembly device for a high-pressure drive mechanism in a nuclear power plant, as described in some embodiments of the present invention. The device includes a connecting mechanism 1, an actuating mechanism 2, and an adjusting mechanism 3. The connecting mechanism 1 includes a connecting pressure plate 11, a first connecting pressure block 12, and a second connecting pressure block 13. Both the first and second connecting pressure blocks 12 and 13 are connected to the connecting pressure plate 11 and are disposed inside the spring 4. The connecting pressure plate 11 is located at the top of the spring 4. The actuating mechanism 2 includes at least one lifting device 21 and a drive rod 22 connected to the lifting device 21. The drive rod 22 is connected to the connecting pressure plate 11. The adjusting mechanism 3 is connected to the actuating mechanism 2 and is used to adjust the output force of the actuating mechanism 2. The spring 4 is located in the high-voltage drive mechanism 5 of the nuclear power plant. The first connecting block 12 and the second connecting block 13 are positioned at different locations to jointly position the spring 4. Before disassembly, the spring 4 is securely locked to guide its movement along a predetermined trajectory. Simultaneously, a connecting plate 11 is positioned at the top of the spring 4, and its bottom end abuts against the top of the spring 4, preventing accidental displacement or ejection. The shapes of the first connecting block 12 and the second connecting block 13 can be adapted to the specifications of the spring 4.

[0028] Understandably, this spring disassembly device for the high-pressure drive mechanism of a nuclear power plant prevents the spring 4 from accidentally popping out by placing the first connecting block 12 and the second connecting block 13 inside the spring 4 and placing the connecting plate 11 on the top of the spring 4. This eliminates the risk of injury or loss from the spring 4 popping out, achieves positioning and guidance during the disassembly process, prevents accidental popping out, ensures operational safety, and facilitates subsequent installation and management of the spring 4. Simultaneously, a lifting device 21 is used to disassemble the spring 4, and an adjusting mechanism 3 adjusts the output force of the action mechanism 2 to ensure ease of operation, improve disassembly efficiency, reduce the risk of equipment damage, and achieve precise control of the disassembly force, ensuring that the spring 4 is not damaged during disassembly and maintaining its original performance. Furthermore, this disassembly device has significant advantages in spatial adaptability, enabling efficient operation in the confined space inside the complex high-pressure drive mechanism, greatly improving operational convenience and efficiency.

[0029] Furthermore, the connecting mechanism 1 can be made entirely of high-strength alloy steel, possessing excellent mechanical properties and capable of repeated maintenance of the high-pressure drive mechanism 5 in nuclear power plants. The connecting pressure plate 11 has multiple adjustment holes 111 for the drive rod 22 to pass through. The drive rod 22 is connected to the connecting pressure plate 11 via a first fastener. The adjustment hole 111 can be an oblong hole, facilitating position adjustment of the drive rod 22 to accommodate springs 4 of different specifications. The first fastener can be a bolt.

[0030] likeFigure 3 As shown, the connecting pressure plate 11 has a groove 112 on the side facing the spring 4. Specifically, the groove 112 is an arc-shaped groove that matches the outer diameter of the spring 4. The groove 112 can position the top of the spring 4. The groove 112 is provided with a rubber coating. The rubber coating can increase the friction between the groove 112 and the spring 4, prevent the spring 4 from slipping during disassembly, and avoid scratching damage to the surface of the spring 4.

[0031] In this embodiment, as Figure 2 As shown, there are three lifting devices 21, which are evenly arranged about the central axis of the connecting pressure plate 11. The lifting devices 21 are preferably jacks. The operating mechanism 2 also includes a mounting plate 23, which is connected to the lifting device 21 by a second fastener, which can be a bolt.

[0032] like Figure 1 As shown, the adjusting mechanism 3 includes a first connecting pipe 31, a hydraulic distributor 32, a second connecting pipe 33, and a hydraulic pump 34. The two ends of the first connecting pipe 31 are connected to the hydraulic distributor 32 and the lifting device 21, respectively, and the two ends of the second connecting pipe 33 are connected to the hydraulic distributor 32 and the hydraulic pump 34, respectively. Specifically, the lifting device 21, as the main force-applying component, is connected to the hydraulic pump 34 via the connecting pipe. The operator can control the pressure output of the hydraulic pump 34 from a safe distance, thereby applying a stable and precisely controllable tension to the spring 4. To achieve precise force control, the hydraulic pump 34 is equipped with a maximum hydraulic pressure limit. Understandably, after the connecting pressure plate 11 is installed and connected to the drive rod 22, the hydraulic pressure of the hydraulic pump 34 is evenly distributed to the three lifting devices 21 via the hydraulic distributor 32. Through the displacement reaction of the three lifting devices 21, the preload of the spring 4 is overcome, and the spring force is slowly released, achieving the purpose of repairing the spring 4. Both the first connecting pipe 31 and the second connecting pipe 33 are high-pressure hoses.

[0033] In addition, a pressure gauge 35 is provided on the second connecting pipe 33 to measure the output pressure of the hydraulic pump 34.

[0034] In a specific embodiment, the maximum load of the power unit is calculated as follows: the stiffness of spring 4 is 200 N·mm, and the pre-compression is 200 mm. The jack has a hydraulic capacity of 5 tons, and the lifting height can reach 250 mm. The spring force is 40,000 N, and the converted tonnage is: 40,000 N ÷ 9.81 ≈ 4.08 tons < 5 tons. Therefore, regardless of whether the load is applied on one side or the total load, the three lifting devices 21, totaling approximately 15 tons, far exceed the maximum force of spring 4, and the driving force meets the requirements.

[0035] The disassembly device also includes a displacement sensor for measuring the displacement of the drive rod 22. This sensor measures the displacement of the connecting pressure plate 11, thus reflecting the degree of tension of the spring 4. Through pressure feedback from the hydraulic pump 34, precise closed-loop control of the disassembly force on the spring 4 is achieved, ensuring that the spring 4 is disassembled slowly and smoothly within a safe force range. Specifically, the disassembly force of the spring 4 is automatically fed back based on its specifications and installation status. The magnitude of the force is monitored and adjusted in real time during the disassembly process to ensure safety and stability.

[0036] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A spring disassembly device for a high-voltage drive mechanism in a nuclear power plant, characterized in that, It includes a connecting mechanism (1), an actuating mechanism (2), and an adjusting mechanism (3); The connecting mechanism (1) includes a connecting pressure plate (11), a first connecting pressure block (12) and a second connecting pressure block (13). The first connecting pressure block (12) and the second connecting pressure block (13) are both connected to the connecting pressure plate (11). The first connecting pressure block (12) and the second connecting pressure block (13) are disposed inside the spring (4). The connecting pressure plate (11) is disposed at the top of the spring (4). The operating mechanism (2) includes at least one lifting device (21) and a drive rod (22) connected to the lifting device (21), the drive rod (22) being connected to the connecting pressure plate (11). The adjustment mechanism (3) is connected to the action mechanism (2) and is used to adjust the output force of the action mechanism (2).

2. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The connecting pressure plate (11) has multiple adjustment holes (111) for the drive rod (22) to pass through, and the drive rod (22) is connected to the connecting pressure plate (11) by a first fastener.

3. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The connecting pressure plate (11) has a groove (112) on the side facing the spring (4).

4. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 3, characterized in that, The groove (112) is provided with a rubber coating.

5. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The number of lifting devices (21) is three, and the three lifting devices (21) are evenly arranged about the central axis of the connecting pressure plate (11).

6. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The actuating mechanism (2) further includes a mounting plate (23), which is connected to the lifting device (21) by a second fastener.

7. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The regulating mechanism (3) includes a first connecting pipe (31), a hydraulic distributor (32), a second connecting pipe (33), and a hydraulic pump (34); The two ends of the first connecting pipe (31) are respectively connected to the hydraulic distributor (32) and the lifting device (21), and the two ends of the second connecting pipe (33) are respectively connected to the hydraulic distributor (32) and the hydraulic pump (34).

8. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 7, characterized in that, A pressure gauge (35) is provided on the second connecting pipe (33).

9. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The disassembly device also includes a displacement sensor for measuring the displacement of the drive rod (22).

10. The spring disassembly device for a high-voltage drive mechanism in a nuclear power plant according to claim 1, characterized in that, The lifting device (21) is a jack.

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