Filter screen auxiliary drive mechanism

Abstract

The application provides a filter screen auxiliary driving mechanism, belonging to the technical field of nuclear power unit maintenance, comprising a mounting box, an executing mechanism, a driving mechanism and a power mechanism; the structure of the auxiliary driving mechanism is redesigned, so that the filter screen auxiliary driving mechanism can be installed on the inspection platform opposite the original driving device of the equipment to drive the drum screen gear to rotate, does not occupy the normal maintenance area, does not need to wait for the completion of the maintenance of bearings, driving gears and the like, and is parallel to the maintenance period of the body, thereby shortening the overall maintenance period and improving the maintenance efficiency. The mounting box and the platform are movably connected, the position of the mounting box can be adjusted, the mounting box is fixed on the platform, the stability of the auxiliary driving mechanism is ensured, the first gear and the drum screen gear are stably engaged, the drum screen is driven by the power mechanism, not only the risk caused by manual errors is reduced, the safety risk in work is greatly reduced, the work intensity is reduced, the overhaul period is shortened, and the maintenance efficiency is further improved.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power unit maintenance technology, specifically relating to a filter screen auxiliary drive mechanism. Background Technology

[0002] The drum-type rotary filter consists of a rotating cylindrical frame structure and a corresponding drive mechanism. It is a circulating water filtration system in the cooling source system of a nuclear power unit, used to filter all the seawater used by each unit and clean the contaminants in the flow channels. Currently, nuclear power units undergo 3 to 4 major overhauls per year, and the drum filter itself is inspected during each overhaul.

[0003] The existing auxiliary drive mechanism is usually installed in the position of the original drive unit of the equipment. It can only be installed and used after the original drive shaft bearings and drive gears have been repaired. The repair work is inefficient and the repair period is long. Summary of the Invention

[0004] To address the problems of low maintenance efficiency and long maintenance periods in existing auxiliary drive mechanisms, which require waiting for the original drive shaft bearings and drive gears to be inspected before installation and use, this invention provides a filter screen auxiliary drive mechanism. This mechanism is installed on an inspection platform opposite the original drive unit and uses hydraulic power to rotate the filter screen gears. It does not occupy the normal maintenance area, eliminates the need to wait for bearing and drive gear inspections, and operates in parallel with the main unit's maintenance schedule, thus shortening the overall maintenance period and improving maintenance efficiency. The specific technical solution is as follows:

[0005] A filter screen auxiliary drive mechanism includes: a mounting box, an actuator, a drive mechanism, and a power mechanism; the mounting box is movably mounted on a platform opposite the original drive mechanism; the actuator includes a first gear that meshes with a filter screen gear, and the actuator is mounted on the mounting box; the drive mechanism is mounted on the mounting box and is connected to the actuator in a transmission manner; the power mechanism is connected to the drive mechanism and is used to drive the drive mechanism to move.

[0006] In addition, the filter auxiliary drive mechanism in the above-mentioned technical solution provided by the present invention may also have the following additional technical features:

[0007] Optionally, the mounting box includes: a base, a housing, and a support arm; the base is detachably connected to a first mounting surface of the platform; the housing is movably connected to the base; one end of the support arm is movably connected to the housing, and the other end of the support arm is detachably connected to a second mounting surface of the platform.

[0008] Optionally, the support arm can be telescopic.

[0009] Optionally, the actuator further includes: a first mounting shaft and a second gear; the first mounting shaft is disposed inside the mounting box, and the first gear is mounted on the outside of the first mounting shaft; the second gear is mounted on the outside of the first mounting shaft, and the second gear meshes with the drive mechanism.

[0010] Optionally, the drive mechanism includes: a second mounting shaft, a third gear, and a power arm; the second mounting shaft is disposed inside the mounting box and is rotatably connected to the mounting box; the third gear is fitted on the outside of the second mounting shaft, rotates synchronously with the second mounting shaft, and meshes with the second gear; the power arm is disposed on the second mounting shaft, is connected to the power mechanism, and is used to drive the second mounting shaft to rotate.

[0011] Optionally, the power mechanism includes: a hydraulic station, hydraulic pipelines, and a remote control module; the hydraulic station is equipped with a signal receiver for receiving signals; one end of the hydraulic pipeline is connected to the hydraulic station, and the other end of the hydraulic pipeline is connected to the drive mechanism for driving the drive mechanism to rotate; the remote control module is used to send signals, and the remote control module is electrically connected to the signal receiver.

[0012] Optionally, the hydraulic station also includes: a hydraulic tank, a fluid inlet, a hydraulic pump, a solenoid valve assembly, and a solenoid pressure relief valve; the fluid inlet is located on the hydraulic tank; the hydraulic pump is located on the hydraulic tank and connected to the hydraulic tank; the solenoid valve assembly is located on the hydraulic tank and connected to the hydraulic pump; the solenoid pressure relief valve is located on the hydraulic tank and connected to both the solenoid valve assembly and the hydraulic pipeline; wherein, the solenoid pressure relief valve and the solenoid valve assembly are both electrically connected to the remote control module.

[0013] Optionally, the filter auxiliary drive mechanism further includes: a locking device; the locking device is movably connected to the mounting box, electrically connected to the electromagnetic pressure relief valve, and the locking device is located above the first gear.

[0014] Optionally, the remote control module includes: a remote controller, a display screen, adjustment buttons, and an emergency stop button; the remote controller is electrically connected to the signal receiver and is used to transmit signals; the display screen is mounted on the remote controller and is used to display signals; the adjustment buttons are mounted on the remote controller and are electrically connected to the solenoid valve assembly; the emergency stop button is mounted on the remote controller and is electrically connected to the solenoid pressure relief valve.

[0015] Optionally, the filter auxiliary drive mechanism also includes: a detection module; the detection module is electrically connected to the remote control module, and the detection module is used to scan signals.

[0016] The filter auxiliary drive mechanism of the present invention has the following advantages compared with the prior art:

[0017] This application redesigns the structure of the auxiliary drive mechanism, allowing it to be installed on an inspection platform opposite the original drive unit to drive the drum screen gear. This design is applicable to similar drum-shaped filter structures both domestically and internationally, without occupying normal maintenance areas or requiring waiting for bearings and drive gears to be repaired. It operates in parallel with the main unit's maintenance schedule, shortening the overall maintenance time and improving efficiency. The mounting box is movably connected to the platform; its position can be fine-tuned to secure it, ensuring the stability of the auxiliary drive mechanism and thus ensuring stable meshing between the first gear and the drum screen gear. Using a power mechanism to drive the drum screen rotation replaces the current manual drive method, reducing the risk of human error and significantly lowering safety risks during operation. It also reduces the workload of on-site personnel, shortens the overhaul period, and further improves maintenance efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a filter auxiliary drive mechanism according to an embodiment of the present invention;

[0019] Figure 2 This is a perspective view of the housing of a filter auxiliary drive mechanism according to an embodiment of the present invention;

[0020] Figure 3 This is a perspective view of the internal structure of a filter auxiliary drive mechanism according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the power mechanism of a filter auxiliary drive mechanism according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the hydraulic station of a filter screen auxiliary drive mechanism according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of a remote control module for a filter auxiliary drive mechanism according to an embodiment of the present invention;

[0024] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0025] 10. Mounting box; 101. Base; 102. Box body; 103. Support arm; 11. Actuator; 111. First mounting shaft; 112. First gear; 113. Second gear; 12. Drive mechanism; 121. Second mounting shaft; 122. Third gear; 123. Power arm; 13. Power mechanism; 131. Hydraulic station; 1311. Hydraulic tank; 1312. Injection port; 1313. Hydraulic pump; 1314. Solenoid valve assembly; 1315. Solenoid pressure relief valve; 132. Hydraulic pipeline; 133. Remote control module; 1331. Remote control; 1332. Display screen; 1333. Adjustment button; 1334. Emergency stop button; 14. Locking device; 15. First mounting surface is horizontal; 16. Second mounting surface is vertical. Detailed Implementation

[0026] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

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

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] See also Figures 1-6As shown in the embodiment of this application, a filter auxiliary drive mechanism 12 includes: a mounting box 10, an actuator 11, a drive mechanism 12, and a power mechanism 13; the mounting box 10 is movably mounted on a platform opposite the original drive mechanism 12; the actuator 11 includes a first gear 112, which meshes with a drum mesh gear, and the actuator 11 is mounted on the mounting box 10; the drive mechanism 12 is mounted on the mounting box 10, and the drive mechanism 12 is connected to the actuator 11 in a transmission manner; the power mechanism 13 is connected to the drive mechanism 12, and the power mechanism 13 is used to drive the drive mechanism 12 to move. The auxiliary drive mechanism 12 can be movably installed on the platform opposite the original drive unit of the equipment. After fine-tuning the position of the mounting box 10, the mounting box 10 is fixed on the platform, ensuring the stability of the auxiliary drive mechanism 12. Moreover, it does not occupy the normal maintenance area and can be arranged in parallel with the maintenance schedule of the main body, so that maintenance work can be carried out simultaneously, shortening the overall maintenance schedule. The drive mechanism 12 is driven by the power mechanism 13, which in turn drives the actuator 11 to move, so that the first gear 112 meshes with the drum mesh gear and rotates, driving the drum mesh to rotate. No manual operation is required, which not only reduces the risk caused by human error, thus greatly reducing the safety risks in the work, but also reduces the workload of on-site personnel, shortens the overhaul period, and improves the efficiency of maintenance work.

[0031] Furthermore, the first gear 112 of the actuator 11 is the same model as the original drive gear on the equipment, so there is no compatibility issue; the arrangement position of the mounting box 10 is adjusted according to the working distance on site, and the first gear 112 and the on-site mesh drum gear are arranged in the same vertical plane, so there is no compatibility issue and it is easy to use.

[0032] Specifically, the first gear 112 is a nylon gear, which meshes with the mesh drum gear on site, driving the mesh drum gear to rotate.

[0033] Specifically, the platform is the inspection platform directly opposite the mesh drum gear.

[0034] In one embodiment, the base 101 is detachably connected to the first mounting surface of the platform; the housing 102 is movably connected to the base 101; one end of the support arm 103 is movably connected to the housing 102, and the other end of the support arm 103 is detachably connected to the second mounting surface of the platform. By movably connecting the housing 102 to both the base 101 and the support arm 103, it is convenient to adjust the angle of the housing 102 for fine-tuning, ensuring the stability of the meshing between the first gear 112 and the mesh drum gear, and guaranteeing the safety of maintenance work.

[0035] Furthermore, the first mounting surface and the second mounting surface are perpendicular to each other.

[0036] Specifically, the first mounting surface is a horizontal plane 15, and the second mounting surface is a vertical plane 16.

[0037] Furthermore, the housing 102 is locked to the base 101 and the support arm 103 with bolts to ensure that the position of the housing 102 is fixed after fine adjustment; the base 101 is connected to the first mounting surface with bolts, and the support arm 103 is connected to the second mounting surface with bolts, so that the mounting box 10 can be detachably connected to the platform, making disassembly and assembly simple and efficient.

[0038] Specifically, the base 101 is connected to the first mounting surface by anchor bolts, which improves the connection strength of the base 101, ensures the stability of the entire auxiliary drive mechanism 12, and makes the structure reliable.

[0039] The support arm 103 is a telescopic structure. By making the support arm 103 a telescopic structure, and by adjusting the length of the support arm 103 for fine-tuning, the first gear 112 can be stably engaged with the mesh drum gear, thereby allowing the large tooth of the mesh drum to rotate smoothly.

[0040] It should be noted that the length of the support arm 103 can also be adjusted by cutting and changing the reserved length.

[0041] Furthermore, the support arm 103 includes at least two connecting sections, which are locked together by bolts to fix the length of the support arm 103. Alternatively, internal and external threads can be provided on the two connecting sections respectively, and the length of the support arm 103 can be changed by thread engagement, allowing for precise adjustment and good self-locking.

[0042] In another embodiment, a first mounting shaft 111 is disposed within a mounting housing 10, and a first gear 112 is fitted onto the outside of the first mounting shaft 111; a second gear 113 is fitted onto the outside of the first mounting shaft 111, and the second gear 113 meshes with the drive mechanism 12. By simultaneously fitting the first gear 112 and the second gear 113 onto the outside of the first mounting shaft 111, it is ensured that the first gear 112 and the second gear 113 can rotate synchronously when the first mounting shaft 111 rotates, thus guaranteeing the accuracy of the output of the actuator 11.

[0043] The second mounting shaft 121 is disposed inside the mounting box 10 and is rotatably connected to the mounting box 10. The third gear 122 is fitted on the outside of the second mounting shaft 121, rotates synchronously with the second mounting shaft 121, and meshes with the second gear 113. The power arm 123 is disposed on the second mounting shaft 121 and is connected to the power mechanism 13. The power arm 123 is used to drive the second mounting shaft 121 to rotate. The power mechanism 13 drives the power arm 123, which in turn drives the second mounting shaft 121 and the third gear 122 to rotate. The third gear 122 meshes with the second gear 113, causing the first mounting shaft 111 to rotate, which in turn causes the first gear 112 to rotate and mesh with the mesh drum gear, thus achieving the technical effect of driving the mesh drum gear to rotate precisely.

[0044] Specifically, the power arm 123 is a hydraulic power arm 123.

[0045] In another embodiment, a signal receiver is provided on the hydraulic station 131 to receive signals; one end of the hydraulic pipeline 132 is connected to the hydraulic station 131, and the other end of the hydraulic pipeline 132 is connected to the drive mechanism 12 to drive the drive mechanism 12 to rotate; a remote control module 133 is used to send signals, and the remote control module 133 is electrically connected to the signal receiver. By providing a signal receiver on the hydraulic station 131, it is convenient to receive the signals output by the remote control module 133, that is, to receive the operation commands issued by the remote control module 133 to control the hydraulic station 131; the hydraulic station 131 is connected to the power arm 123 through the hydraulic pipeline 132 to provide power to the power arm 123, thereby achieving the technical effect of driving the drive mechanism 12 to rotate.

[0046] Furthermore, the remote control module 133 is a remote control device that is easy to use, requires no special equipment, and reduces safety risks during operation.

[0047] The injection port 1312 is located on the hydraulic tank 1311; the hydraulic pump 1313 is located on the hydraulic tank 1311 and connected to the hydraulic tank 1311; the solenoid valve assembly 1314 is located on the hydraulic tank 1311 and connected to the hydraulic pump 1313; the solenoid pressure relief valve 1315 is located on the hydraulic tank 1311 and is connected to both the solenoid valve assembly 1314 and the hydraulic pipeline 132; the solenoid pressure relief valve 1315 and the solenoid valve assembly 1314 are also electrically connected to the remote control module 133. By adjusting the hydraulic pressure using the solenoid valve assembly 1314, when the hydraulic station 131 is pressurized, the power arm 123 begins to rotate; when stopped, the solenoid pressure relief valve 1315 opens, the hydraulic station 131 maintains a certain pressure, and the first gear 112 is locked to prevent rotation. Furthermore, during operation, personnel do not come into contact with the main body, eliminating the risk of mechanical injury and ensuring the safety of maintenance.

[0048] The locking device 14 is movably connected to the mounting box 10 and electrically connected to the electromagnetic pressure relief valve 1315. The locking device 14 is located above the first gear 112. By setting the locking device 14 above the first gear 112 and electrically connecting the locking device 14 to the electromagnetic pressure relief valve 1315, when the electromagnetic pressure relief valve 1315 is de-energized, the locking device 14 falls freely under gravity and directly inserts into the first gear 112 of the actuator 11. The locking device 14 is a non-powered design and can achieve emergency stop function without an additional power source. The mechanical braking ensures the safety of maintenance.

[0049] Remote controller 1331 is electrically connected to a signal receiver and is used to transmit signals. Display screen 1332 is mounted on remote controller 1331 and is used to display the signals. Adjustment button 1333 is mounted on remote controller 1331 and is electrically connected to solenoid valve assembly 1314. Emergency stop button 1334 is mounted on remote controller 1331 and is electrically connected to solenoid pressure relief valve 1315. By mounting display screen 1332 on remote controller 1331, the filter rotation angle can be displayed in real time, and the maintenance position can be recorded to prevent any maintenance at a certain circumferential position from being missed, providing a clear and convenient view. The remote controller 1331 can remotely control the power mechanism 13 and control the hydraulic station 131 to start and stop. When the hydraulic station 131 is pressurized, the power arm 123 starts to rotate. When it stops, the electromagnetic pressure relief valve 1315 opens, the hydraulic station 131 maintains a certain pressure, and the first gear 112 is locked to prevent rotation. In case of emergency, the emergency stop button 1334 can be pressed to disconnect the circuit of the hydraulic station 131, depressurize the hydraulic station 131, and stop power output, ensuring the safety of the equipment itself and eliminating the risk of accidental injury to nearby personnel.

[0050] Furthermore, the remote control 1331 is battery-powered, wirelessly controlled, and easy to carry.

[0051] Specifically, the remote control 1331 is powered by a lithium battery, which improves the continuity of operation of the remote control 1331 through charging, making it convenient to use and energy-saving and environmentally friendly.

[0052] The detection module is electrically connected to the remote control module 133, and the detection module is used to scan signals. The detection module scans and sends signals in real time to the remote control 1331 so as to display the rotation position of the filter.

[0053] Furthermore, the detection module is equipped with monitoring probes, namely a transmitting probe and a scanning receiving probe. The transmitting probe sends signals in real time; the scanning receiving probe scans the signal source and transmits it to the remote controller 1331.

[0054] Furthermore, the detection module is battery-powered, wirelessly remote-controlled, and easy to carry.

[0055] Specifically, the detection module is powered by a lithium battery, which improves the continuity of the monitoring probe's operation through charging, making it convenient to use and energy-saving and environmentally friendly.

[0056] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0057] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application. The above are merely preferred embodiments of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the protection scope of this application.

Claims

1. A filter screen auxiliary drive mechanism (12), characterized in that, The filter auxiliary drive mechanism (12) includes: Mounting box (10), which is movably mounted on a platform opposite the original drive mechanism (12); An actuator (11) is provided, the actuator (11) including a first gear (112) meshing with a drum mesh gear, and the actuator (11) is mounted on the mounting box (10); A drive mechanism (12) is disposed on the mounting box (10), and the drive mechanism (12) is connected to the actuator (11) in a transmission manner; A power mechanism (13) is connected to the drive mechanism (12), and the power mechanism (13) is used to drive the drive mechanism (12) to move; A base (101) is detachably connected to a first mounting surface of the platform; The housing (102) is movably connected to the base (101); A support arm (103), one end of which is movably connected to the housing (102), and the other end of which is detachably connected to the second mounting surface of the platform; The first mounting surface and the second mounting surface are perpendicular to each other.

2. The filter auxiliary drive mechanism (12) according to claim 1, characterized in that: The support arm (103) is a telescopic structure.

3. The filter auxiliary drive mechanism (12) according to claim 1, characterized in that, The actuator (11) also includes: The first mounting shaft (111) is disposed inside the mounting box (10), and the first gear (112) is fitted on the outside of the first mounting shaft (111); The second gear (113) is mounted on the outside of the first mounting shaft (111) and meshes with the drive mechanism (12).

4. The filter auxiliary drive mechanism (12) according to claim 3, characterized in that, The drive mechanism (12) includes: The second mounting shaft (121) is disposed inside the mounting box (10) and is rotatably connected to the mounting box (10); The third gear (122) is mounted on the outside of the second mounting shaft (121). The third gear (122) rotates synchronously with the second mounting shaft (121), and the third gear (122) meshes with the second gear (113). A power arm (123) is mounted on the second mounting shaft (121) and connected to the power mechanism (13). The power arm (123) is used to drive the second mounting shaft (121) to rotate.

5. The filter auxiliary drive mechanism (12) according to claim 1, characterized in that, The power mechanism (13) includes: A hydraulic station (131) is provided with a signal receiver, which is used to receive signals; A hydraulic pipeline (132) is provided, one end of which is connected to the hydraulic station (131), and the other end of which is connected to the drive mechanism (12) for driving the drive mechanism (12) to rotate. A remote control module (133) is used to emit signals and is electrically connected to the signal receiver.

6. The filter auxiliary drive mechanism (12) according to claim 5, characterized in that, The hydraulic station (131) also includes: Hydraulic tank (1311); Injection port (1312), the injection port (1312) is provided on the hydraulic tank (1311); A hydraulic pump (1313) is mounted on the hydraulic tank (1311) and is connected to the hydraulic tank (1311). A solenoid valve assembly (1314) is mounted on the hydraulic tank (1311) and is connected to the hydraulic pump (1313). An electromagnetic pressure relief valve (1315) is provided on the hydraulic tank (1311). The electromagnetic pressure relief valve (1315) is connected to both the electromagnetic valve group (1314) and the hydraulic pipeline (132). The electromagnetic pressure relief valve (1315) and the electromagnetic valve group (1314) are both electrically connected to the remote control module (133).

7. The filter auxiliary drive mechanism (12) according to claim 6, characterized in that, The filter auxiliary drive mechanism (12) also includes: A locking device (14) is movably connected to the mounting box (10), the locking device (14) is electrically connected to the electromagnetic pressure relief valve (1315), and the locking device (14) is located above the first gear (112).

8. The filter auxiliary drive mechanism (12) according to claim 6, characterized in that, The remote control module (133) includes: Remote controller (1331), which is electrically connected to the signal receiver, is used to emit signals; A display screen (1332) is disposed on the remote controller (1331) and is used to display signals; An adjustment button (1333) is provided on the remote controller (1331), and the adjustment button (1333) is electrically connected to the solenoid valve assembly (1314); An emergency stop button (1334) is provided on the remote controller (1331) and is electrically connected to the electromagnetic pressure relief valve (1315).

9. A filter auxiliary drive mechanism (12) according to claim 5, characterized in that, The filter auxiliary drive mechanism (12) also includes: The detection module is electrically connected to the remote control module (133) and is used to scan signals.

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