Iterative replacement integrated construction method for mechanical-electrical water pump damping device

Abstract

The application discloses an electromechanical water pump damping device iterative replacement integrated construction method and relates to the technical field of electromechanical operation and maintenance. The method comprises the following steps: obtaining the water pump unit foundation size and the damper installation parameters; constructing a temporary bearing system at the position of the damper to be replaced, and gradually transferring the water pump damping pedestal load to the temporary bearing system; separating the original lug on the water pump damping pedestal, removing the old damper, and assembling the separated original lug to the new damper body for pre-assembly and positioning; applying a reverse force to the elastic element of the new damper body through an external force unit, adjusting the elastic element compression amount to the original installation height of the equipment, making the butt joint gap between the water pump damping pedestal and the original lug meet the connection requirements, forming a force connection node, and performing a graded unloading operation on the external force unit after the fixed connection is completed; and performing trial operation and vibration detection. The application realizes the online accurate replacement of the water pump damper without disassembling the pipeline.

Description

Technical Field

[0001] This invention relates to the field of electromechanical operation and maintenance technology, specifically to an integrated construction method for iterative replacement of electromechanical water pump vibration damping devices. Background Technology

[0002] During the operation, maintenance and renovation of existing building electromechanical systems, water pump units, as core power equipment, are directly affected by the integrity of their vibration damping devices, which are related to the stability of equipment operation, structural safety and environmental noise control. As the service life of the equipment increases, vibration dampers generally suffer from problems such as spring fatigue failure, rubber aging and cracking or metal component corrosion, and need to be replaced iteratively.

[0003] However, existing pump vibration damper replacement technology has significant drawbacks: traditional construction methods must follow a complete process of "stopping the pump - disassembling the inlet and outlet water pipes - removing the old vibration damper - installing the new vibration damper - reinstalling the pipes - system commissioning." This model is not only time-consuming and labor-intensive, but more importantly, for pump systems that require continuous water supply, fire emergency, or precision process cooling, which cannot tolerate prolonged interruptions, stopping the pump and disassembling the pipes will lead to service interruptions or even safety accidents. In addition, the lugs of old vibration dampers are often welded and solidified to the base, and forcibly removing them can easily damage the base itself. If new lugs are fabricated and welded, insufficient on-site machining precision can easily cause dimensional deviations and stress concentrations, affecting the recovery of vibration damping performance. At the same time, the lack of precise control over the load transfer of the base during the replacement process can easily cause unit settlement, displacement, or uneven stress, leading to secondary failures such as excessive vibration and loose connections after replacement.

[0004] Therefore, there is an urgent need for an integrated online replacement construction method that does not require disassembling pipelines, can achieve a smooth load transition, and is compatible with existing connection conditions. Summary of the Invention

[0005] To solve the above-mentioned technical problems, an integrated construction method for iterative replacement of electromechanical water pump vibration damping devices is provided. This technical solution solves the above-mentioned problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps, including: Obtain the foundation dimensions of the water pump unit and the installation parameters of the shock absorbers, and measure the current installation height of the unit as a reference value; A temporary load-bearing system is constructed at the location of the shock absorber to be replaced, and the load of the water pump shock absorber pedestal is gradually transferred to the temporary load-bearing system. Separate the original lugs on the water pump vibration damping platform, remove the old vibration damper, and assemble the separated original lugs into the new vibration damper body for pre-installation. An external force-applying unit applies a reverse force to the elastic element of the new shock absorber body, adjusting the compression of the elastic element to the original installation height of the equipment, so that the mating gap between the water pump shock absorber base and the original lug meets the connection requirements. With the docking gap meeting the connection requirements, the original lug is fixedly connected to the water pump vibration damping platform body to form a force-bearing connection node. After the fixed connection is completed, a graded unloading operation is performed on the external force application unit to gradually release the output force of the external force application unit, so that the load of the water pump vibration damping platform is smoothly transferred to the new vibration damper body. Remove the temporary load-bearing system and the external force application unit, and conduct trial operation and vibration testing.

[0007] Preferably, the step of constructing a temporary load-bearing system at the location of the shock absorber to be replaced, and gradually transferring the load of the water pump shock absorber pedestal to the temporary load-bearing system, includes: According to the height of the pedestal, make vertical temporary support components and install temporary load-bearing brackets at the location of the shock absorber to be replaced. The load-bearing capacity of the temporary load-bearing brackets shall not be lower than the safety threshold of the design load. The load of the water pump vibration damping platform is gradually transferred to the temporary load-bearing support through the lifting unit and traction unit to eliminate the risk of platform instability and settlement during the removal of the vibration damper.

[0008] Preferably, the step of separating the original mounting lugs on the water pump vibration damping platform, removing the old vibration damper, and pre-installing the separated original mounting lugs onto the new vibration damper body includes: After confirming the stability of the temporary support system, the original lugs on the water pump vibration damping platform were separated by thermal cutting. Disconnect the used shock absorber from the unit base and foundation and remove the used shock absorber; Assemble the separated original lugs onto the new shock absorber body, and place the new shock absorber body according to the base layout position, ensuring that the center line of the shock absorber is aligned with the center line of the connection hole of the unit base, and the pre-installation alignment deviation is controlled within the allowable range.

[0009] Preferably, the step of applying a reverse force to the elastic element of the new shock absorber body through an external force application unit to adjust the compression of the elastic element to the original installation height of the equipment includes: The external force application unit is straddled and fixed above the new shock absorber body; The output rate of the external force application unit and the synchronization error of the multiple units are controlled within a preset safety range. The structure deformation is monitored in real time. When the compression of the elastic element reaches the original installation height of the equipment and the docking gap between the water pump vibration damping platform and the original hanging lug meets the connection requirements, the output force of the external force application unit is kept stable.

[0010] Preferably, the step of fixing the original lug to the water pump vibration damping base body when the docking gap meets the connection requirements includes: While maintaining a stable output force from the external force application unit, a full welding operation is performed at the joint between the original lug and the water pump vibration damping platform body. Ensure that the welds are well fused and meet the design load-bearing requirements to form a complete load-bearing connection node.

[0011] Preferably, the step of performing a graded unloading operation on the external force-applying unit to gradually release the output force of the external force-applying unit, so that the load of the water pump vibration damping platform is smoothly transferred to the new vibration damper body, includes: The output force of the external force application unit is gradually reduced in stages, with no less than a preset number of stages, and the unloading amplitude of each stage does not exceed a preset proportion of the total load. After each stage of unloading, the unit remains for a preset time to detect structural response and changes in unit levelness, and to record settlement and displacement data. Once it is confirmed that the displacement increment does not exceed the allowable threshold and the structure is stable, the next stage of unloading continues until the output force of the external force application unit is completely released, allowing the elastic element of the new shock absorber body to bear the continuous load of the equipment.

[0012] Preferably, the trial operation and vibration testing include: Jog the water pump motor to check the rotation direction and the reciprocating motion of the shock absorber; The water pump was officially started and gradually loaded to the rated operating condition. During operation, the vibration monitoring unit was used to obtain the unit's vibration value. When the effective value of the vibration velocity does not exceed the preset vibration threshold and there is no looseness or leakage at any connection point, the shock absorber is deemed to be qualified for replacement.

[0013] Preferably, after the trial run and vibration test, a corrosion prevention treatment step is also included: Remove welding spatter and dirt from the surfaces of connectors and shock absorber metal parts; Apply a protective coating evenly to the connector and the metal parts of the shock absorber to complete the construction.

[0014] Preferably, the external force application unit includes: The bottom support component is used to span and fix the new shock absorber body to the foundation ground. A top bearing member is disposed on top of the bottom support member, and the top bearing member is provided with a positioning interface for the force application module to pass through or be installed; The force-applying module is installed on the top bearing member, and its output end abuts against the upper pressure plate of the new shock absorber body or the bottom of the water pump shock absorber platform to apply the reverse force.

[0015] Preferably, the temporary support system further includes: The lateral limiting unit installed on the side of the water pump vibration damping platform is used to control the horizontal displacement of the platform during load transfer and unloading, and to prevent the platform from sliding or deflecting.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By constructing a temporary load-bearing system to pre-bear the pedestal load, and combining it with the external force application unit to dynamically adjust the compression of the elastic element of the new shock absorber, the docking gap between the pedestal and the reused lugs automatically meets the connection requirements. The entire process does not require disassembling the water pump inlet and outlet pipes, completely avoiding the risk of system interruption caused by pump shutdown and pipe disassembly in traditional processes. It is particularly suitable for scenarios with stringent requirements for continuous operation, such as fire pumps, domestic water supply pumps, and process cooling pumps. The original lugs on the pedestal are separated by thermal cutting and directly assembled to the new shock absorber body. This avoids the problems of dimensional errors, unstable weld quality, and local stress concentration caused by re-fabricating and welding new lugs on site. It effectively maintains the original design state of the stress connection nodes and improves the reliability and durability of the vibration damping system after replacement. 2. Staged unloading ensures a smooth load transition, preventing unit instability and secondary damage. After the fixed connection is completed, the output force of the external force application unit is released in a multi-stage progressive manner, while the structural response and displacement changes are detected simultaneously. This ensures that the load on the pedestal is transferred to the new shock absorber body evenly and without impact, effectively eliminating problems such as unit settlement, deflection, or instantaneous overload of elastic elements that may be caused by traditional one-time unloading. This ensures installation accuracy and long-term operational stability. The process integrates temporary bearing, lug reuse, reverse compression, full welding fixation, staged unloading, and vibration verification into a standardized closed-loop process, significantly reducing waiting time and manpower input for process connections. Compared with traditional methods, it can shorten the construction period by more than 30% and reduce the overall maintenance cost by more than 40%. It is especially suitable for complex working conditions with limited space and tight working windows in the electromechanical renovation of existing buildings. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating the steps of the present invention. Detailed Implementation

[0018] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0019] Example 1: Refer to Figure 1 As shown, the integrated construction method for iterative replacement of vibration damping devices in electromechanical water pumps includes: Step 101, obtaining the foundation dimensions of the water pump unit and the installation parameters of the vibration dampers, and measuring the current installation height of the unit as a benchmark value; construction personnel use a tape measure, level, and laser rangefinder to measure and record the length, width, and height dimensions of the water pump unit foundation, and simultaneously measure the model and specifications of the existing vibration dampers, the free height of the springs, the welding position of the mounting lugs, and the clearance height from the bottom surface of the pedestal to the top surface of the foundation; the current installation height of the unit refers to the vertical distance between the bottom surface of the water pump vibration damping pedestal and the top surface of the foundation, which includes the total height of the vibration damper body and its mounting lugs, and can be used as the target benchmark value for adjusting the spring compression of the new vibration damper; this benchmark value is a key reference data to ensure that the installation posture of the replaced unit is consistent with the original design; Step 102: Construct a temporary load-bearing system at the location of the shock absorber to be replaced, and gradually transfer the load of the water pump shock absorber pedestal to the temporary load-bearing system; erect a temporary load-bearing support in the area below the pedestal corresponding to the shock absorber to be replaced, leaving an operating gap between the top surface of the vertical support component of the support and the bottom surface of the pedestal; then slowly lift the pedestal using a jacking unit, so that the load of the pedestal is gradually transferred from the original shock absorber to the temporary load-bearing support until the original shock absorber is in a near-unloaded free state; the temporary load-bearing system refers to the temporary mechanical support structure that replaces the shock absorber in bearing the entire weight of the water pump unit and the pedestal during the shock absorber replacement; the core purpose of this step is to create unloaded working conditions for the safe removal of the old shock absorber without dismantling the pipeline; Step 103: Separate the original lugs on the water pump vibration damping platform, remove the old vibration damper, and assemble the separated original lugs into the new vibration damper body for pre-installation. After confirming that the temporary load-bearing system has stably borne the entire platform load, use thermal cutting equipment to cut and separate the original lugs from the bottom surface of the platform, keeping the lug body structure intact and undamaged. Then loosen the anchor bolts between the old vibration damper and the foundation and remove it as a whole. Assemble the cut-off original lugs into the reserved holes on the upper pressure plate of the new vibration damper body using bolts or positioning pins, and place the new vibration damper body into the design position according to the base layout. The original lugs refer to the metal transition plates welded to the bottom surface of the platform on the original vibration damper. Their welding surfaces with the platform have formed a stable stress adaptation relationship after long-term service. Reusing the original lugs can avoid the dimensional deviation and welding residual stress problems caused by remaking new lugs. Step 104: Apply a reverse force to the elastic element of the new shock absorber body using an external force application unit, adjusting the compression of the elastic element to the original installation height of the equipment, ensuring that the mating gap between the water pump shock absorber base and the original mounting lug meets the connection requirements; place the external force application unit across the new shock absorber body and anchor it to the foundation ground, then activate the external force application unit to apply a downward reverse thrust to the elastic element of the new shock absorber body, gradually compressing the elastic element, which can be a spring or a rubber pad; during the compression process, measure the distance between the bottom surface of the base and the top surface of the original mounting lug in real time. When the gap narrows to the minimum welding gap required for full welding, pressure is stopped and the force is kept stable. The minimum welding gap is usually 2 to 5 millimeters. The reverse force is an external force opposite to the elastic force of the elastic element itself, used to actively compress the spring so that its height matches the installation space of the platform. The butt gap meets the connection requirements, meaning that the distance between the bottom surface of the platform and the top surface of the lug is within a reasonable range for full welding. This step adapts to the fixed position of the platform by actively adjusting the spring compression, rather than the traditional method of moving the platform to adapt to the shock absorber. Step 105: With the butt joint gap meeting the connection requirements, fix the original lug to the water pump vibration damping platform body to form a stress connection node; under the condition that the external force application unit maintains a constant output force, the welder performs full welding on the joint between the top surface of the original lug and the bottom surface of the platform, and the weld is continuously welded along the circumference of the lug to ensure that the weld penetration and weld leg size meet the structural load-bearing design requirements; the stress connection node refers to the rigid mechanical force transmission path formed by welding between the lug and the platform, which transmits the platform load to the vibration damper body through the lug; welding is performed under the premise that the external force application unit maintains a stable spring compression state, which can ensure that the relative position of the lug and the platform is accurate after welding; Step 106: After the fixed connection is completed, perform a graded unloading operation on the external force-applying unit, gradually releasing the output force of the external force-applying unit so that the load on the water pump vibration damping platform can be smoothly transferred to the new vibration damper body. After the full welding operation is completed and the weld has cooled to the ambient temperature, gradually reduce the output force of the external force-applying unit according to the preset graded plan. After each unloading stage, pause and check the settlement displacement and levelness changes of the platform. After confirming that the structural response is normal, continue to the next stage of unloading until the output force of the external force-applying unit is completely released and the entire load of the platform is borne by the elastic element of the new vibration damper body. The graded unloading operation refers to the process of gradually releasing the force by dividing the total unloading amount into several levels. Its purpose is to avoid elastic impact and structural instability caused by the instantaneous application of the entire load to the new vibration damper. This step is the key link in the entire construction method to ensure the installation quality and directly determines the uniformity of the force and the vibration reduction effect of the unit after replacement. Step 107: Remove the temporary load-bearing system and external force application unit, and conduct trial operation and vibration testing; after confirming that the new shock absorber has fully borne the load of the pedestal and that the unit's levelness meets the requirements, remove the temporary load-bearing support and external force application unit in sequence and restore the construction site; then start the water pump according to the procedure for trial operation, and use vibration monitoring instruments to detect the vibration values ​​of each measuring point of the unit to determine whether the shock absorber replacement quality is qualified. In one alternative, the current installation height of the unit can be determined by taking the average value of multiple measurements. The arithmetic mean of the measurements taken at the four corners of the platform is used as the reference value to eliminate the error caused by the tilt of the platform itself. In another implementation, for pumping stations with multiple pumps operating in parallel, a replacement strategy can be adopted, that is, only the shock absorber of one pump is replaced at a time, while the other pumps remain in operation, so as to complete the iterative replacement of all shock absorbers without interrupting the water supply service. In another implementation, the operating vibration data of the water pump unit can be collected and recorded before construction, serving as a baseline for comparison of the vibration reduction effect after replacement, and used to quantitatively evaluate the actual improvement effect of the shock absorber replacement; By integrating temporary bearing, in-situ reuse of mounting lugs, reverse compression of springs, adaptive gap matching, full welding fixation, graded unloading, and vibration verification into a unified closed-loop construction process, the shock absorber can be replaced online without disassembling the water pump pipeline, shortening downtime and construction period. At the same time, the in-situ reuse of mounting lugs and the graded unloading mechanism ensure that the stress state of the unit after replacement is consistent with the original design, making it particularly suitable for the renovation of existing building electromechanical systems where long-term downtime is not allowed.

[0020] In some embodiments, the process of constructing a temporary load-bearing system at the location of the shock absorber to be replaced and gradually transferring the load of the water pump shock absorber pedestal to the temporary load-bearing system includes: Step 201: Fabricate temporary vertical support components according to the pedestal height. Install temporary load-bearing brackets at the locations of the shock absorbers to be replaced. The load-bearing capacity of the temporary load-bearing brackets should not be less than the safety threshold of the design load. Measure the clear height from the bottom of the pedestal to the top of the foundation on-site. Cut steel profiles accordingly to fabricate temporary vertical support components. Channel steel or H-beams can be used, and their length should be slightly less than the measured clear height to allow for jacking operation space. Place the temporary vertical support components vertically under the pedestal on both sides of the shock absorbers to be replaced, and install anti-slip pads at the bottom to increase friction with the foundation surface. The safety threshold of the design load refers to the temporary support components. The ultimate bearing capacity of the temporary load-bearing support should not be less than the sum of the self-weight of the pedestal and the weight of the pump unit in the area it supports, multiplied by a safety factor. The safety factor is determined as follows: first, obtain the sum of the self-weight of the pedestal and the weight of the pump unit as the basic load value; then, multiply the basic load value by a safety factor in the range of 1.2 to 1.5 to obtain the safety threshold of the design load. The steel section and the number of supports selected for the temporary load-bearing support must ensure that its ultimate bearing capacity is not less than this safety threshold. As the main body for load transfer, the structural strength and stability of the temporary load-bearing support are the fundamental guarantee of safety throughout the replacement process. Step 202: Using the lifting unit and traction unit, the load of the water pump vibration damping platform is gradually transferred to the temporary support frame to eliminate the risk of platform instability and settlement during the removal of the vibration damper. A lifting unit is placed between the top of the temporary support frame and the bottom of the platform. The lifting unit can be a hydraulic jack or a scissor jack. The lifting unit is operated slowly to gradually raise the platform. Simultaneously, an auxiliary traction force is applied to the platform using a traction unit to control the direction of movement. A hand-operated hoist or chain hoist can be used for the traction unit. During the lifting process, the platform's levelness is continuously observed to ensure even load transfer. When the lifting unit slightly raises the platform until the original vibration damper springs show significant unloading and rebound, the lifting is stopped, and the platform load is locked onto the temporary support frame. The lifting unit refers to a hydraulic or mechanical device that provides vertical lifting force; the traction unit refers to a tension adjustment device used to control the platform's horizontal posture. The lifting unit and traction unit work together to achieve controlled transfer of the platform load, avoiding the risk of platform tilting or slippage caused by single-point force application. In one alternative, the vertical temporary support components can be made of adjustable-length sleeve-type steel structures, with the support height adjusted by bolts to accommodate the clearance of different pedestals, thus reducing the amount of on-site cutting and processing. In another implementation, for large water pump units with heavy weight, a set of temporary load-bearing supports and jacking units can be set at each of the four corners of the platform, and a four-point synchronous jacking method can be used to ensure the uniformity of load transfer and the levelness of the platform. By pre-erecting temporary load-bearing supports with sufficient load-bearing capacity and coordinating with jacking and traction units to achieve controlled load transfer, the risk of instability, settlement, or tilting caused by the loss of support after the shock absorber is removed is fundamentally eliminated, creating safe and stable working conditions for the subsequent removal of old shock absorbers and installation of new shock absorbers.

[0021] In some embodiments, the process of separating the original mounting lugs on the water pump vibration damping platform, removing the old vibration damper, and pre-installing the separated original mounting lugs onto the new vibration damper body includes: Step 301: After confirming the stability of the temporary load-bearing system, use thermal cutting to separate the original lugs on the water pump damping platform. After the lifting unit completes the load transfer and locks, visually inspect each connection node of the temporary load-bearing bracket for looseness or deformation to confirm the overall stability of the structure. Subsequently, the operator uses oxy-acetylene flame cutting equipment or plasma cutting equipment to precisely cut along the root of the weld between the original lugs and the bottom surface of the platform, completely separating the lugs from the platform. During the cutting process, the flame temperature and cutting speed should be controlled to avoid overheating, which could lead to deterioration of the metal structure of the lug body or cause cutting deformation. Thermal cutting refers to a cutting process that uses high-temperature flames or electric arcs to melt metal to achieve separation, including gas cutting, plasma cutting, etc. The key to this step is to ensure that the geometry of the lugs and the size of the connecting holes do not change significantly after cutting, so as to meet the accuracy requirements for subsequent assembly with the new damper body. Step 302: Disconnect the used shock absorber from the unit base and foundation, and remove the used shock absorber; use a wrench or power tool to loosen the fastening nuts between the bottom of the used shock absorber and the pre-embedded anchor bolts in the foundation, and at the same time, loosen the bolt connection between the top of the shock absorber and the unit base, if there is a connection between the top of the shock absorber and the unit base; then pull the entire used shock absorber horizontally or vertically out from under the pedestal and move it to the designated storage area; used shock absorbers refer to shock absorber devices that have lost their normal vibration damping function due to spring fatigue, rubber aging, or structural damage; since the load of the pedestal has been borne by the temporary bearing system, the used shock absorber is in a state of near-no load at this time, and the removal process will not affect the stability of the pedestal; Step 303: Assemble the separated original lugs onto the new shock absorber body. Place the new shock absorber body according to the base layout position, ensuring that the center line of the shock absorber is aligned with the center line of the connection hole of the unit base. The pre-assembly alignment deviation should be controlled within the allowable range. Align the original lugs cut and separated in Step 301 with the reserved connection holes on the upper pressure plate of the new shock absorber body, and fasten them together with high-strength bolts or positioning pins to form a pre-assembled component of the new shock absorber body and the original lugs. Then, according to the positioning layout marks marked on the foundation surface before construction, place the pre-assembled component to the designed installation position. Use a plumb line or laser alignment instrument to check the alignment accuracy of the shock absorber center line with the corresponding connection hole center line of the unit base. The pre-assembly alignment deviation refers to the offset of the shock absorber center line from the connection hole center line of the unit base on the horizontal plane, which should generally be controlled within ±3 mm. The pre-assembly alignment accuracy directly affects the subsequent shaft alignment and operating vibration level of the water pump unit, so it needs to be strictly controlled during the pre-assembly stage. In one alternative, the thermal cutting method can use carbon arc gouging instead of traditional oxy-acetylene cutting to obtain a narrower heat-affected zone and a smoother cut surface, reducing the amount of subsequent trimming work on the lug assembly surface. In another implementation, for cases where the lug and the base are difficult to cut and separate due to long-term corrosion, a penetrating bolt loosening agent can be sprayed on the weld area for pretreatment. After the corrosion softens, the cutting can be carried out to reduce the cutting difficulty and protect the lug body. By precisely separating and reusing the original lugs in situ through thermal cutting, problems such as dimensional deviations, residual welding stress, and uncontrollable on-site processing quality caused by remaking and welding new lugs are avoided. At the same time, strict pre-installation alignment control ensures the installation position accuracy of the new shock absorber, laying a good geometric foundation for subsequent reverse compression and full welding fixation.

[0022] In some embodiments, the process of applying a reverse force to the elastic element of the new shock absorber body through an external force application unit and adjusting the compression of the elastic element to the original installation height of the equipment includes: Step 401: Place the external force application unit across the new shock absorber body and fix it in place; place the bottom support component of the external force application unit across the foundation ground surrounding the new shock absorber body, and firmly anchor the bottom support component to the foundation surface using chemical anchors or expansion bolts to ensure that no displacement or overturning occurs during the force application process; then install the top bearing component on top of the bottom support component, and install the force application module in the positioning interface of the top bearing component. The force application module can be a hydraulic jack, with the output end of the force application module facing the center of the upper pressure plate of the new shock absorber body below or the force point on the bottom surface of the pedestal; "across" means that the gantry structure of the external force application unit surrounds the shock absorber body from the outside without mechanically interfering with the shock absorber body, and the force application module applies downward force through the top bearing component; Step 402: Control the output rate of the external force-applying unit and the synchronization error of multiple units within a preset safety range; start the hydraulic pump station to supply oil and pressurize the force-applying module, and adjust the lifting rate of the force-applying module through the flow control valve of the hydraulic system to ensure that it does not exceed the preset safety rate threshold, so as to prevent spring buckling instability or structural impact due to excessive loading speed; when multiple external force-applying units are set under the same platform to work together, ensure that the stroke synchronization error of each force-applying module does not exceed the preset allowable deviation value through the synchronous hydraulic circuit or electronic synchronous control system; the output rate refers to the piston rod extension speed at the output end of the force-applying module; the multi-unit synchronization error refers to the stroke difference of multiple force-applying modules at the same moment; controlling the loading rate and synchronization accuracy are key measures to prevent spring buckling due to bias and uneven deformation of the platform; Step 403: Monitor structural deformation in real time. When the compression of the elastic element reaches the original installation height of the equipment and the docking gap between the water pump vibration damping platform and the original lug meets the connection requirements, maintain the stable output force of the external force application unit. During the process of the force application module gradually compressing the elastic element, the operator uses a vernier caliper or displacement sensor to measure the compression of the elastic element in real time, i.e., the difference between the current height and the free height of the spring. At the same time, the operator uses a feeler gauge to measure the docking gap between the bottom surface of the platform and the top surface of the original lug. When the compression of the elastic element reaches the spring compression corresponding to the current installation height of the unit measured in step 101, and the docking gap shrinks to a weldable range of 2 mm to 5 mm, immediately stop pressurizing and lock the hydraulic system to keep the current output force constant. Keeping the output force stable means that during the subsequent full welding operation, the output force of the external force application unit does not fluctuate significantly to maintain the constancy of the docking gap. This step is the core technical link of the entire process. By precisely controlling the spring compression, the gap between the platform and the lug is adaptively matched without the need for repeated manual adjustment of the platform height or the lug position. In one alternative, the compression of the elastic element can be monitored by a displacement sensor installed on the force application module, and closed-loop feedback control can be achieved through the programmable logic controller of the hydraulic control system. When the compression reaches the target value, the pressurization will automatically stop. In another implementation, for scenarios where large water pump units require multi-point synchronous compression, a synchronous flow divider valve can be connected in series in the oil circuit of each force-applying module to ensure the consistency of output force and stroke at each point from the hydraulic system level, reducing the dependence on the electronic synchronous control system. By applying a controllable reverse thrust to the elastic element of the new shock absorber using an external force application unit, the spring compression is dynamically adjusted to the original installation height of the equipment, thus achieving automatic adaptation of the mating gap between the pedestal and the reusable lug. This solves the gap mismatch problem caused by spring stiffness differences or installation errors in traditional methods, and creates precise geometric conditions for subsequent full welding fixation.

[0023] In some embodiments, the process of fixing the original lug to the water pump vibration damping base body while ensuring the connection gap meets the connection requirements includes: Step 501: While maintaining a stable output force from the external force application unit, perform full welding at the joint between the original lug and the water pump vibration damping platform. After confirming in Step 403 that the butt joint gap meets the welding requirements and the output force of the external force application unit is locked, a welder with the corresponding welding qualification certificate shall perform full welding on the circumferential joint between the top surface of the lug and the bottom surface of the platform. Welding shall be performed using manual arc welding or gas shielded welding. The material of the welding rod or welding wire shall be matched with the base material of the lug and the platform. For example, when the base material is Q235 steel, E43 series welding rods shall be selected. The welding sequence shall adopt a symmetrical segmented back welding method to reduce welding thermal deformation and residual stress. During the welding process, the pressure gauge reading of the external force application unit shall be continuously monitored to confirm that the output force does not fluctuate abnormally due to welding thermal expansion. Full welding refers to continuous welding along the entire contact circumference of the lug and the platform. The weld shall not have any interruptions, skipped welds, or incomplete fusion defects. Step 502: Ensure good weld fusion and meet design load-bearing requirements to form a complete load-bearing connection node. After full welding, visually inspect the weld appearance to confirm that there are no defects such as cracks, porosity, slag inclusions, or undercut on the weld surface. The weld leg size should not be less than the design value, usually 6 mm to 8 mm. After the weld has cooled naturally to ambient temperature, use a weld inspection instrument to perform non-destructive testing on key load-bearing welds. Non-destructive testing can be done using ultrasonic testing to confirm that the internal quality of the weld meets the relevant standard requirements. The load-bearing connection node refers to the rigid mechanical force transmission node formed by full welding between the lug and the base. This node needs to withstand the static load and dynamic load of the pump unit for a long time. The welding quality directly determines the reliability of the mechanical force transmission path between the shock absorber and the base, and is a key link in quality control in the entire replacement process. In one alternative, full-scale welding operations can be performed using carbon dioxide gas shielded welding instead of manual arc welding to improve welding efficiency and weld quality, while reducing welding spatter contamination of surrounding equipment. In another implementation, for cases where the base material is cast iron or special alloy steel, the weld area can be preheated before welding. The preheating temperature is determined according to the material. After welding, the area is kept warm and cooled slowly to reduce the hardening tendency and cold crack risk of the heat-affected zone of the weld. Full welding was performed under the condition that the spring compression state was kept stable by the external force unit, which ensured that the relative position of the lug and the base did not shift during the welding process, the weld quality met the structural load-bearing design requirements, and a reliable and durable load-bearing connection node was formed.

[0024] In some embodiments, the process of performing a graded unloading operation on the external force-applying unit, gradually releasing the output force of the external force-applying unit, and smoothly transitioning the load of the water pump damping platform to the new damper body includes: Step 601: Gradually reduce the output force of the external force application unit in stages, with no fewer than the preset number of stages, and the unloading amplitude of each stage not exceeding the preset proportion of the total load; after the full welding operation is completed and the weld has cooled to ambient temperature, the operator slowly releases the oil pressure of the force application module through the unloading valve of the hydraulic pump station; the unloading process is carried out according to the pre-established grading scheme, dividing the total unloading amount into no fewer than 3 levels, and the unloading amplitude corresponding to the oil pressure released at each level does not exceed 10% of the current total output force, that is, the load unloaded at each level does not exceed 10% of the total load of the pedestal; Example of calculation process: If the total output force of the external force application unit is 50,000 N, then the unloading amount per stage is 50,000 N multiplied by 10%, which equals 5,000 N. The unloading is completed in at least 3 stages. The first stage unloads from 50,000 N to 45,000 N, the second stage unloads from 45,000 N to 40,000 N, and so on until the output force is completely released to zero. Staged unloading refers to breaking down the one-time force release process into multiple small steps and executing them step by step, so that the load on the pedestal is transferred from the external force application unit to the elastic element of the new shock absorber in a gradual manner. Step 602: After each unloading stage, pause for a preset time to detect structural response and changes in unit levelness, and record settlement and displacement data; after each unloading stage is completed, pause the operation and maintain the current state for 5 to 10 minutes; during the pause, use a dial indicator or electronic level to measure the vertical settlement and horizontal displacement of each measuring point on the platform, and at the same time observe whether the compression and rebound of the new shock absorber springs are normal, and whether there are any abnormal sounds or crack propagation signs in the weld area; record all detection data in the construction log as the basis for determining whether to continue to the next unloading stage; structural response refers to the changes in deformation, displacement, and stress state of the platform and shock absorption system during load changes; Step 603: After confirming that the displacement increment does not exceed the allowable threshold and the structure is stable, continue to the next level of unloading until the output force of the external force unit is completely released, allowing the elastic element of the new shock absorber body to bear the continuous load of the equipment; analyze the settlement and displacement data recorded in step 602. When the displacement increment between two adjacent levels does not exceed 1 mm, that is, the additional settlement of the platform caused by each unloading level does not exceed 1 mm, and the levelness deviation of the platform is within the allowable range, it is determined that the current structural state is stable and the next level of unloading can continue; execute step by step according to this logic until the oil pressure of the external force unit is completely released to zero, the output end of the force module is disengaged from the platform or the shock absorber body, and the entire load of the platform is independently borne by the elastic element of the new shock absorber body; if the displacement increment exceeds the allowable threshold after a certain level of unloading, unloading should be suspended, the cause analyzed, and remedial measures taken before continuing; the core of the graded unloading mechanism is step-by-step verification and gradual transition, ensuring that the load transfer process is always under control through the detection and judgment of each level; In one alternative, the staged unloading process can be automatically executed by an intelligent hydraulic system with pressure sensors. The system automatically controls the opening of the unloading valve according to preset stage parameters, and automatically collects pressure and displacement data after each stage of unloading to determine stability, thereby reducing human error. In another implementation, for scenarios where multiple shock absorbers are replaced simultaneously, the graded unloading of each shock absorber location should be carried out synchronously, and the unloading amplitude of the same grade should be consistent to avoid additional torsional stress on the pedestal due to uneven unloading at various points. The graded unloading mechanism ensures a smooth and shock-free transition of the load on the pedestal from the external force application unit to the elastic element of the new shock absorber. This effectively avoids risks such as over-compression of the spring, impact settlement of the pedestal, or impact cracking of the weld caused by instantaneous full loading, ensuring that the stress state and installation accuracy of the replaced unit remain highly consistent with the original design.

[0025] In some embodiments, the process of conducting trial operation and vibration testing includes: Step 701: Jog the water pump motor to check the rotation direction and reciprocating motion of the shock absorber; after confirming that the external force application unit and temporary load-bearing system have been completely removed, the water pump pipeline connection is intact, and the electrical system is normal, perform a jog operation on the water pump motor to observe whether the motor rotation direction is consistent with the direction marked on the pump body. At the same time, observe whether the elastic deformation and rebound response of the new shock absorber are normal at the moment of motor start-up, and whether there is any abnormal jamming, metallic collision sound, or buckling of the elastic element; the jog operation refers to an instantaneous start-up that lasts no more than 2 to 3 seconds, used to initially verify the correctness of the unit assembly status without causing impact load on the equipment; Step 702: Start the water pump and gradually load it to the rated operating condition. During operation, use the vibration monitoring unit to obtain the unit's vibration value. After a jog check shows no abnormalities, start the water pump motor. Once the unit is running smoothly, gradually open the outlet valve to load the water pump to the rated flow and rated head conditions. After the water pump has been running stably at the rated operating condition for at least 15 minutes, use a portable vibration tester or online vibration monitoring system to measure the effective value of vibration velocity and the peak value of vibration displacement at key measuring points such as the unit base, the four corners of the platform, and the bearing housing. The unit of the effective value of vibration velocity is millimeters per second. The vibration monitoring unit refers to a vibration measuring instrument with frequency analysis and data storage functions, and its accuracy should meet the requirements of relevant national standards for vibration measurement. Step 703: When the effective value of vibration velocity does not exceed the preset vibration threshold and there is no looseness or leakage at any connection point, the vibration damper replacement is deemed qualified. Compare the measured effective values ​​of vibration velocity at each measuring point with the preset vibration threshold. The preset vibration threshold is determined according to national standards or the equipment manufacturer's technical documents. Generally, for a water pump with a speed of 1450 revolutions per minute, an effective value of vibration velocity not exceeding 2.8 mm / s is considered qualified, and not exceeding 1.8 mm / s is considered excellent. At the same time, visually and tactilely inspect all welds, bolt connections, pipe flanges, etc., to confirm that there is no looseness, leakage, or abnormal temperature rise. When all the above conditions are met, the vibration damper replacement is deemed qualified and can be put into use. Trial operation and vibration testing are the final acceptance links for evaluating the quality of vibration damper replacement. Whether the vibration value meets the standard directly reflects the vibration damping performance and installation quality of the new vibration damper. In one alternative, vibration testing can be performed under both no-load and full-load conditions. By comparing the vibration data under the two conditions, the vibration reduction effect of the shock absorber under different load conditions can be comprehensively evaluated. In another implementation, the vibration data collected during the trial operation phase can be compared and analyzed with the original vibration data of the unit before replacement recorded in step 101 to quantitatively evaluate the actual effect of the vibration damper replacement on the unit's vibration improvement, and provide data reference for subsequent similar maintenance projects. The standardized trial operation process, which includes inching pre-inspection, gradual loading, and multi-point vibration testing, comprehensively verified the unit's operational stability and vibration reduction effect after the shock absorber replacement, providing an objective quantitative evaluation basis for construction quality.

[0026] In some embodiments, a corrosion protection step is further included after trial operation and vibration testing, including: Step 801: Remove welding spatter and dirt from the surfaces of the connectors and shock absorber metal parts; use a wire brush, angle grinder with wire wheel, or manual scraper to thoroughly remove welding spatter, slag, and oxide scale around the full weld; at the same time, clean the anchor bolts, shock absorber body metal surfaces, and lug connection areas that have been contaminated with oil, dust, and cutting residue during construction; the cleaning work should ensure that the metal substrate surface is exposed with a metallic luster and free of residual attachments; connectors include all metal connection nodes such as anchor bolts, welding areas between lugs and the base, and the connection between the new shock absorber body and the foundation; Step 802: Apply a protective coating evenly to the connecting parts and metal components of the shock absorber to complete the construction. Apply a coat of anti-rust primer to the cleaned metal surface. Epoxy zinc-rich primer or red lead anti-rust paint can be used. After the primer is surface dry, apply a topcoat. Alkyd enamel or polyurethane topcoat can be used. The total dry film thickness of the coating should not be less than 100 micrometers. The coating should evenly cover all exposed metal surfaces, without any missed areas, runs, or blistering. For the threaded parts of the anchor bolts, apply grease or anti-rust grease for additional protection. The protective coating refers to a coating system with anti-rust and anti-corrosion functions. Its function is to protect the metal surface from humid environments and media erosion, extending the service life of the shock absorber. Anti-corrosion treatment is the final step in the construction process. Although it does not directly affect the vibration reduction performance, it is of great significance for ensuring the long-term durability of the shock absorber system. In one alternative, for vibration damping devices in high humidity or corrosive environments, such as basement pump rooms or chemical plant pump rooms, hot-spray zinc or cold-spray zinc coatings can be used instead of traditional paint coatings to achieve a longer-lasting anti-corrosion protection effect. In another implementation method, the metal surface can be sandblasted to remove rust before the anti-corrosion coating is applied, reaching the Sa2.5 level rust removal standard, so as to significantly improve the adhesion between the coating and the substrate and the anti-corrosion life. Through standardized surface cleaning and protective coating application, welded joints and shock absorber metal components are effectively protected from environmental corrosion, ensuring the long-term service performance and appearance quality of the shock absorption system.

[0027] In some embodiments, the external force-applying unit comprises: Step 901: Bottom support component, used to span and fix the new shock absorber body to the foundation ground; the bottom support component adopts a portal frame base structure assembled by welding or bolting of steel profiles. The steel profiles can be H-beams or channel steel, and their planar dimensions are larger than the outer dimensions of the new shock absorber body, so that the bottom support component can span the shock absorber body from the outside without spatial interference; the bottom surface of the bottom support component is firmly connected to the foundation ground by chemical anchors or expansion bolts. The specifications and number of anchors are determined according to the maximum output force of the force application module to ensure that the bottom support component does not slip, overturn, or lift under the maximum force; spanning means that the bottom support component surrounds the shock absorber body from both sides and the top in a portal frame structure, forming an independent load-bearing frame; Step 902: The top bearing component is installed on top of the bottom support component. The top bearing component has positioning interfaces for the force-applying module to pass through or be installed. The top bearing component is made of high-strength steel plate or steel beams, horizontally mounted on the tops of the two side columns of the bottom support component, and connected to the columns by welding or high-strength bolts. One or more positioning interfaces are provided in the middle of the top bearing component. These positioning interfaces can be circular through holes or flange mounting surfaces, used to install the force-applying module and precisely define the direction of its action, ensuring that the output force of the force-applying module is applied vertically to the target stress point. The positioning interface refers to the structural feature on the top bearing component used for installing and positioning the force-applying module; its position and size are designed to match the shape and installation method of the force-applying module. Step 903: The force application module is installed on the top bearing member, with its output end abutting against the upper pressure plate of the new shock absorber body or the bottom of the water pump shock absorber platform to apply a reverse force. The force application module can be an actuator that can provide controllable linear thrust, such as a hydraulic jack, screw jack, or pneumatic pressurization device. The cylinder of the force application module is fixed to the positioning interface of the top bearing member by a flange or clamp, and its piston rod extends vertically downward as the output end, abutting against the designated force point on the top surface of the upper pressure plate of the new shock absorber body or the bottom surface of the platform. The force application module is connected to an external hydraulic pump station through a hydraulic pipeline, and the pump station provides power and controls the magnitude and rate of the output force. The force application module is the actuator that directly generates and transmits the force in the external force application unit, and its maximum output force should not be less than the elastic restoring force generated by the shock absorber spring under the target compression. In one alternative, the bottom support components and the top load-bearing components can adopt a modular splicing design, with each component connected by standardized flange interfaces and pins to achieve rapid assembly and disassembly, improve construction efficiency, and facilitate transportation and reuse. In another implementation, the force application module can be configured with built-in displacement and pressure sensors to collect piston rod stroke and output force data in real time and transmit them to an external control system, thereby realizing digital monitoring and closed-loop control of the compression process. The external force application unit, through the coordinated cooperation of the bottom support component, the top load-bearing component and the force application module, forms a gantry-type force-bearing frame independent of the shock absorber body. It can apply a precise and controllable reverse thrust to the elastic element of the new shock absorber, providing reliable hardware support for the precise adjustment of spring compression and the adaptive matching of the docking gap.

[0028] In some embodiments, the temporary support system further includes a lateral limiting unit disposed on the side of the water pump vibration damping platform, comprising: Step 1001: A lateral limiting unit is installed on the side of the water pump vibration damping platform. The lateral limiting unit is used to control the horizontal displacement of the platform during load transfer and unloading, preventing the platform from sliding or deflecting. Lateral limiting units are installed on two or more sides of the water pump vibration damping platform. One end of the lateral limiting unit is anchored to the foundation ground or an adjacent fixed structure, and the other end is connected to the side of the platform or applies lateral constraint force through the contact surface. During the load transfer process, i.e., when the lifting unit lifts the platform to transfer the load to the temporary load-bearing support, the lateral limiting unit restricts the translational and rotational degrees of freedom of the platform on the horizontal plane, preventing the platform from sliding due to eccentricity of the lifting force or offset of the platform's center of gravity. During the staged unloading process, i.e., when the external force application unit gradually releases the output force, the lateral limiting unit also plays a lateral constraint role, preventing the platform from horizontally deflecting due to uneven spring rebound of each damper. The lateral limiting unit refers to a device or component that applies lateral constraint to the platform in the plane of the horizontal platform platform, used to limit the horizontal degrees of freedom of the platform. Step 1002, Specific Implementation of the Lateral Limiting Unit; The lateral limiting unit can use a hand-operated hoist as a flexible limiting device. The hook of the hand-operated hoist is connected to the lifting lug or a preset anchor point on the side of the platform. The other end of the hand-operated hoist is anchored to the pre-embedded anchor ring or a temporarily set counterweight on the foundation surface. The distance between the platform and the anchor point on the foundation surface is controlled by adjusting the chain length of the hand-operated hoist, thereby limiting the horizontal displacement of the platform; Alternatively, the lateral limiting unit can also use a rigid tie rod. The rigid tie rod can be selected from a screw rod or a steel pipe support. Both ends are connected to the side of the platform and the foundation surface respectively through hinge seats. The horizontal position of the platform is precisely controlled by adjusting the thread of the screw rod or the length of the steel pipe support; The hand-operated hoist is a manually operated, light and small lifting and traction device with a self-locking function, which can lock the chain length at any position; The rigid tie rod refers to a rod-shaped component with sufficient axial stiffness and capable of withstanding both tensile and compressive forces; In one alternative, the lateral limiting unit can be a lead screw with a universal joint, which allows the screw to rotate freely within a certain angle range to adapt to the angle changes that occur during the small vertical lifting and lowering of the platform, thus avoiding the screw from bearing bending stress. In another implementation, for large water pump pedestals, a set of lateral limiting units can be set on each of the four sides of the pedestal to form a cross-shaped four-way limiting system, which fully constrains the horizontal degree of freedom of the pedestal from the two orthogonal directions of X and Y, ensuring that the horizontal position of the pedestal is under control under any load change condition. In another implementation, a tension sensor can be installed on the lateral limiting unit to monitor the magnitude of the lateral force borne by the limiting unit in real time. When the lateral force exceeds the preset alarm threshold, an early warning signal is issued to prompt the construction personnel to check the cause of the platform tilt and make timely adjustments. By adding a lateral limiting unit to the side of the platform, the horizontal degree of freedom of the platform is effectively constrained during the two key stages of load transfer and staged unloading. This fundamentally prevents instability such as lateral slippage and deflection caused by uneven force or center of gravity shift, further improving the safety of the entire construction process and the accuracy of the final installation position of the platform.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. An integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps, characterized in that: include: Obtain the foundation dimensions of the water pump unit and the installation parameters of the shock absorbers, and measure the current installation height of the unit as a reference value; A temporary load-bearing system is constructed at the location of the shock absorber to be replaced, and the load of the water pump shock absorber pedestal is gradually transferred to the temporary load-bearing system. Separate the original lugs on the water pump vibration damping platform, remove the old vibration damper, and assemble the separated original lugs into the new vibration damper body for pre-installation. An external force-applying unit applies a reverse force to the elastic element of the new shock absorber body, adjusting the compression of the elastic element to the original installation height of the equipment, so that the mating gap between the water pump shock absorber base and the original lug meets the connection requirements. With the docking gap meeting the connection requirements, the original lug is fixedly connected to the water pump vibration damping platform body to form a force-bearing connection node. After the fixed connection is completed, a graded unloading operation is performed on the external force application unit to gradually release the output force of the external force application unit, so that the load of the water pump vibration damping platform is smoothly transferred to the new vibration damper body. Remove the temporary load-bearing system and the external force application unit, and conduct trial operation and vibration testing.

2. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The construction of a temporary load-bearing system at the location of the shock absorber to be replaced, and the gradual transfer of the water pump shock absorber pedestal load to the temporary load-bearing system, includes: According to the height of the pedestal, make vertical temporary support components and install temporary load-bearing brackets at the location of the shock absorber to be replaced. The load-bearing capacity of the temporary load-bearing brackets shall not be lower than the safety threshold of the design load. The load of the water pump vibration damping platform is gradually transferred to the temporary load-bearing support through the lifting unit and traction unit to eliminate the risk of platform instability and settlement during the removal of the vibration damper.

3. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The process of separating the original mounting lugs on the water pump vibration damping platform, removing the old vibration damper, and pre-installing the separated original mounting lugs onto the new vibration damper body includes: After confirming the stability of the temporary support system, the original lugs on the water pump vibration damping platform were separated by thermal cutting. Disconnect the used shock absorber from the unit base and foundation and remove the used shock absorber; Assemble the separated original lugs onto the new shock absorber body, and place the new shock absorber body according to the base layout position, ensuring that the center line of the shock absorber is aligned with the center line of the connection hole of the unit base, and the pre-installation alignment deviation is controlled within the allowable range.

4. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The process of applying a reverse force to the elastic element of the new shock absorber body through an external force application unit, and adjusting the compression of the elastic element to the original installation height of the equipment, includes: The external force application unit is straddled and fixed above the new shock absorber body; The output rate of the external force application unit and the synchronization error of the multiple units are controlled within a preset safety range. The structure deformation is monitored in real time. When the compression of the elastic element reaches the original installation height of the equipment and the docking gap between the water pump vibration damping platform and the original hanging lug meets the connection requirements, the output force of the external force application unit is kept stable.

5. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The step of fixing the original lug to the water pump vibration damping base body while the docking gap meets the connection requirements includes: While maintaining a stable output force from the external force application unit, a full welding operation is performed at the joint between the original lug and the water pump vibration damping platform body. Ensure that the welds are well fused and meet the design load-bearing requirements to form a complete load-bearing connection node.

6. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The step of performing a graded unloading operation on the external force-applying unit to gradually release the output force of the external force-applying unit, so that the load of the water pump vibration damping platform is smoothly transferred to the new vibration damper body, includes: The output force of the external force application unit is gradually reduced in stages, with no less than a preset number of stages, and the unloading amplitude of each stage does not exceed a preset proportion of the total load. After each stage of unloading, the unit remains for a preset time to detect structural response and changes in unit levelness, and to record settlement and displacement data. Once it is confirmed that the displacement increment does not exceed the allowable threshold and the structure is stable, the next stage of unloading continues until the output force of the external force application unit is completely released, allowing the elastic element of the new shock absorber body to bear the continuous load of the equipment.

7. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The trial operation and vibration testing include: Jog the water pump motor to check the rotation direction and the reciprocating motion of the shock absorber; The water pump was officially started and gradually loaded to the rated operating condition. During operation, the vibration monitoring unit was used to obtain the unit's vibration value. When the effective value of the vibration velocity does not exceed the preset vibration threshold and there is no looseness or leakage at any connection point, the shock absorber is deemed to be qualified for replacement.

8. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, Following the trial run and vibration testing, a corrosion prevention treatment step is also included: Remove welding spatter and dirt from the surfaces of connectors and shock absorber metal parts; Apply a protective coating evenly to the connector and the metal parts of the shock absorber to complete the construction.

9. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 1, characterized in that, The external force application unit includes: The bottom support component is used to span and fix the new shock absorber body to the foundation ground. A top bearing member is disposed on top of the bottom support member, and the top bearing member is provided with a positioning interface for the force application module to pass through or be installed; The force-applying module is installed on the top bearing member, and its output end abuts against the upper pressure plate of the new shock absorber body or the bottom of the water pump shock absorber platform to apply the reverse force.

10. The integrated construction method for iterative replacement of vibration damping devices for electromechanical water pumps according to claim 2, characterized in that, The temporary support system also includes: The lateral limiting unit installed on the side of the water pump vibration damping platform is used to control the horizontal displacement of the platform during load transfer and unloading, and to prevent the platform from sliding or deflecting.

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