Device for factory detection of feed pump rotor vibration

Abstract

The utility model relates to the technical field of rotor detection, in particular to a feed pump rotor vibration factory detection device, which comprises a first adjusting rod, a support frame and a sleeve, a clamping seat is rotatably mounted on the outer wall of the upper end of the first adjusting rod, and an assembly plate is in threaded connection with the interior of the clamping seat. The outer wall of the lower end of the assembling plate is in bolted connection with a supporting frame, the outer wall of one side of the supporting frame is in threaded connection with a limiting rod, a fixing plate is installed on the outer wall of one end of the limiting rod, a bearing plate is arranged on the outer side of the fixing plate, a sleeve is installed on the outer wall of the upper end of the bearing plate, and a suction cup is fixedly bonded to the outer wall of one side of the sleeve. A piston rod is movably installed in the sleeve, the distance between the detection probe and the rotor can be kept through the length of the limiting rod, an operator can conveniently adjust the distance between the detection probe and the rotor, and the accuracy of subsequent detection data of the detection probe on the rotor is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rotor testing technology, specifically to a device for factory testing of water pump rotor vibration. Background Technology

[0002] Boiler feedwater pumps are the most important auxiliary equipment in power plant feedwater systems. They are used to transport deoxygenated water from the deaerator to the boiler, increase the pressure of the feedwater to the pressure required by the boiler, and deliver the required feedwater flow rate. The pump rotor is a key component in the pump that realizes energy conversion. It is mainly used to support the impeller and transmit power, and can transmit the rotational motion of the motor to the impeller. The operating status of the feedwater pump needs to be monitored and interlocked with the system. The vibration of the feedwater pump rotor shaft is one of the important monitoring contents. Vibration detection is the way to reflect the vibration of the pump rotor shaft. Generally, the rotor vibration is monitored next to the radial bearings at both ends of the feedwater pump rotor.

[0003] Before assembling the water pump, the pump shaft, impeller, and other rotating parts are assembled together for dynamic balancing at the original speed to eliminate excessive imbalance of the rotor. This imbalance is allowed within a certain range to ensure that the water pump meets the requirements for excellent vibration control during operation in the power plant.

[0004] While existing testing devices offer numerous advantages during use, they still suffer from several drawbacks. Their ability to detect rotors is insufficient, resulting in situations where the rotor dynamic balance is acceptable at the factory, but the pump shaft vibration test results are high or even exceed the standard during low-speed start-up. Furthermore, the vibration value increases only slightly after high-speed operation, thus affecting the quality of the water pump. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a device for factory testing of water pump rotor vibration.

[0006] The technical solution adopted by this utility model to solve its technical problem is a device for factory testing of water pump rotor vibration, including a first adjusting rod, a support frame and a sleeve. A clamping seat is rotatably installed on the upper outer wall of the first adjusting rod. An assembly plate is screwed inside the clamping seat. A support frame is bolted to the lower outer wall of the assembly plate. A limit rod is screwed to one side of the outer wall of the support frame. A fixing plate is installed on the outer wall of one end of the limit rod. A bearing plate is provided on the outside of the fixing plate. A sleeve is installed on the upper outer wall of the bearing plate. A suction cup is glued and fixed to one side of the outer wall of the sleeve. A piston rod is movably installed inside the sleeve.

[0007] By adopting the above technical solution, the clamping seat at the upper end of the first adjusting rod can rotate, which allows the assembly plate and the connected support frame to adjust their angles according to actual needs. This allows the detection probe to adapt to different installation environments and the position of the water pump rotor, improving the versatility and flexibility of the device. Furthermore, through the cooperation of the limiting rod, fixing plate, and bearing plate, the usage position of the sleeve can be stably supported, ensuring the stability of the sleeve's usage position. The sleeve and the detection probe have the same axis. The operator attaches the suction cup to the outer wall of the rotor and moves the piston plate inside the sleeve by pulling the piston rod, thereby extracting air from the sleeve and maintaining a negative pressure environment inside the sleeve and suction cup. This keeps the suction cup adsorbed on the outer wall of the rotor stable, thus limiting the position of the detection probe. The length of the limiting rod can maintain the distance between the detection probe and the rotor, making it easy for the operator to adjust the distance between the detection probe and the rotor, ensuring the accuracy of the subsequent detection data of the rotor by the detection probe.

[0008] Specifically, a second adjusting rod is provided on one side of the outer wall of the first adjusting rod, and the second adjusting rod is screwed to the first adjusting rod. A base is screwed to the lower outer wall of the second adjusting rod.

[0009] By adopting the above technical solution, the relative position between the first and second adjusting rods can be adjusted by screws, thereby allowing the height of the detection probe to be flexibly adjusted with the actual position of the rotor. This ensures that the detection probe is in the optimal detection position, guaranteeing the accuracy of the detection. The base provides stable support for the entire device, ensuring that the device will not shake or tip over due to external interference during the detection process.

[0010] Specifically, a detection probe is installed on one side of the outer wall of the assembly plate, and an extension line for data transmission is provided through the detection probe through one end of the outer wall of the assembly plate.

[0011] By adopting the above technical solution, the staff first fixes the rotor on the dynamic balancing machine, then ensures the distance between the detection probe and the rotor, guaranteeing that the voltage formed by the distance between the detection probe and the rotor is within the specified range. Next, the dynamic balancing machine drives the rotor to rotate. The operator first performs a dial indicator check on the rotor vibration measurement interface, ensuring the runout is within 0.005mm. After passing this check, the detection probe is used to measure the vibration of the rotor vibration measurement interface, comparing the runout value on the surface of the rotor vibration measurement interface with the dial indicator data. They should be consistent. If they exceed a certain range, the surface of the rotor vibration measurement interface needs to be repaired. Ultimately, the results of the detection probe check and the dial indicator test results are consistent, thus completing the detection process. The detection data from the detection probe can be transmitted via an extension cable to the matching analysis equipment, enabling real-time monitoring and analysis of the vibration data. This provides an accurate basis for judging the operating status of the water pump rotor. The rotor vibration measurement interface is located on the outside of the rotor bearing support.

[0012] Specifically, the bearing plate is movably installed with bolts, and the bolts pass through one end of the bearing plate and are threaded to the inside of the fixing plate. A fitting groove is opened on one side of the outer wall of the fixing plate, and fitting blocks for limiting the position are installed on both sides of the outer wall of the bearing plate. The fitting blocks are located inside the fitting groove.

[0013] By adopting the above technical solution, the relative position between the fixing plate and the bearing plate can be restricted through the cooperation of the interlocking block and the interlocking groove, ensuring the vertical position of the bearing plate and the sleeve, ensuring that the axial position of the sleeve and the detection probe are the same, and the fixing plate and the bearing plate can be connected by bolts, ensuring that the bearing plate is stably positioned outside the fixing plate, and maintaining the position of the sleeve. Then, the operator adjusts the position of the base through the clamping seat, the first adjusting rod and the second adjusting rod respectively, ensuring the stable placement of the base and improving the efficiency of the detection probe position adjustment.

[0014] Specifically, a piston plate is interference-fitted onto the outer wall of one end of the piston rod, the piston plate is in contact with the inner wall of the sleeve, and a pull ring is installed on the outer wall of one side of the piston rod, the pull ring being located on the outside of the sleeve.

[0015] By adopting the above technical solution, the piston plate and the sleeve can form a good sealing effect, and the pull ring makes it convenient for the operator to pull the piston rod. Thus, when the suction cup is attached to the outer wall of the rotor, the pressure inside the sleeve can be adjusted by moving the piston rod to ensure the adsorption strength of the suction cup on the outer wall of the rotor.

[0016] Specifically, the outer walls on both sides of the sleeve are symmetrically provided with slots, the outer walls on both sides of the piston rod are provided with connecting brackets, and one side of the connecting bracket is provided with a buckle, which is engaged and installed inside the slot.

[0017] By adopting the above technical solution, the buckle and the slot cooperate with each other to lock the piston rod in different positions, thereby maintaining the internal pressure of the suction cup and ensuring that the position of the detection probe is stable when the operator adjusts the position of the clamping seat, the first adjusting rod, the second adjusting rod and the base.

[0018] The beneficial effects of this utility model are:

[0019] (1) The device for testing the vibration of a water pump rotor described in this utility model has a suction cup that is attached to the outer wall of the rotor in a stable position, thereby limiting the position of the detection probe. The length of the limiting rod can maintain the distance between the detection probe and the rotor, making it easy for the operator to adjust the distance between the detection probe and the rotor, and ensuring the accuracy of the subsequent detection data of the rotor by the detection probe.

[0020] (2) The device for factory testing of water pump rotor vibration described in this utility model uses a detection probe to measure the vibration of the rotor vibration measurement interface, and compares the runout value of the rotor vibration measurement interface surface with the dial gauge test data. They should be consistent. If they exceed a certain range, the rotor vibration measurement interface surface needs to be repaired. Finally, the detection probe result is consistent with the dial gauge test result, which ensures the detection effect of the rotor, provides a guarantee for the rotor's factory quality, improves the accuracy of subsequent pump operation vibration monitoring, reduces pump misoperation during water pump operation, and improves the reliability of water supply system control. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the main body of the first adjusting rod structure of this utility model;

[0023] Figure 2 This is a partially exploded view of the first adjusting rod structure of this utility model;

[0024] Figure 3 This is an exploded view of the bearing plate structure of this utility model;

[0025] Figure 4 This is an exploded view of the sleeve structure of this utility model.

[0026] In the diagram: 1. First adjusting rod; 11. Clamping seat; 12. Second adjusting rod; 13. Base; 14. Assembly plate; 15. Detection probe; 16. Extension cable; 2. Support frame; 21. Limiting rod; 22. Bearing plate; 23. Fixing plate; 24. Fitting groove; 25. Fitting block; 3. Sleeve; 31. Suction cup; 32. Slot; 33. Piston plate; 34. Piston rod; 35. Connecting frame; 36. Buckle. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] To save manpower and improve efficiency, as one embodiment of this utility model, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the device for factory testing of water pump rotor vibration according to the present invention includes a first adjusting rod 1, a support frame 2, and a sleeve 3. A clamping seat 11 is rotatably installed on the upper outer wall of the first adjusting rod 1. An assembly plate 14 is screwed inside the clamping seat 11. The support frame 2 is bolted to the lower outer wall of the assembly plate 14. A limit rod 21 is screwed to one side of the outer wall of the support frame 2. A fixing plate 23 is installed on one side of the outer wall of the limit rod 21. A bearing plate 22 is provided on the outside of the fixing plate 23. A sleeve 3 is installed on the upper outer wall of the bearing plate 22. A suction cup 31 is glued and fixed to one side of the outer wall of the sleeve 3. A piston rod 34 is movably installed inside the sleeve 3.

[0029] During use, the clamping seat 11 at the upper end of the first adjusting rod 1 can rotate, which allows the mounting plate 14 and the connected support frame 2 to adjust their angles according to actual needs. This allows the detection probe 15 to adapt to different installation environments and the position of the water pump rotor, improving the versatility and flexibility of the device. Furthermore, through the cooperation of the limiting rod 21, the fixing plate 23, and the bearing plate 22, the usage position of the sleeve 3 can be stably supported, ensuring the stability of the usage position of the sleeve 3. The axis of the sleeve 3 is the same as that of the detection probe 15. The operator attaches the suction cup 31. The piston rod 34 is pulled to move the piston plate 33 inside the sleeve 3, thereby drawing out the air inside the sleeve 3 and maintaining a negative pressure environment inside the sleeve 3 and the suction cup 31. This keeps the suction cup 31 in a stable position on the outer wall of the rotor, thus limiting the position of the detection probe 15. The length of the limiting rod 21 can maintain the distance between the detection probe 15 and the rotor, making it easy for the operator to adjust the distance between the detection probe 15 and the rotor, and ensuring the accuracy of the subsequent detection data of the rotor by the detection probe 15.

[0030] To maintain the detection position, for example, such as Figure 1 As shown, a second adjusting rod 12 is provided on one side of the outer wall of the first adjusting rod 1. The second adjusting rod 12 is screwed to the first adjusting rod 1, and a base 13 is screwed to the lower outer wall of the second adjusting rod 12.

[0031] During use, the relative position between the first adjusting rod 1 and the second adjusting rod 12 can be adjusted by screws, so that the height of the detection probe 15 can be flexibly adjusted with the actual position of the rotor, ensuring that the detection probe 15 is in the optimal detection position and ensuring the accuracy of the detection. The base 13 provides stable support for the entire device, ensuring that the device will not shake or tip over due to external interference during the detection process.

[0032] To detect the rotor, for example, such as Figure 2 As shown, a detection probe 15 is installed on one side of the outer wall of the assembly plate 14, and an extension line 16 for data transmission is provided through the outer wall of one end of the assembly plate 14.

[0033] During use, the operator first fixes the rotor on the dynamic balancing machine, then ensures the distance between the detection probe 15 and the rotor, guaranteeing that the voltage generated between the detection probe 15 and the rotor due to the distance is within the specified range. Next, the dynamic balancing machine drives the rotor to rotate. The operator first performs a dial indicator check on the rotor vibration measurement interface, ensuring the runout is within 0.005mm. After passing this check, the detection probe 15 is used to measure the vibration of the rotor vibration measurement interface, comparing the runout value on the surface of the rotor vibration measurement interface with the dial indicator data. They should be consistent. If they exceed a certain range, the surface of the rotor vibration measurement interface needs to be repaired. Ultimately, the results of the detection probe 15 check are consistent with the dial indicator results, thus completing the detection process. The detection data from the detection probe 15 can be transmitted to the matching analysis equipment via the extension cable 16, enabling real-time monitoring and analysis of the vibration data. This provides an accurate basis for judging the operating status of the water pump rotor. The rotor vibration measurement interface is located on the outside of the rotor bearing support.

[0034] To maintain the usage angle, for example, such as Figure 4 As shown, a bolt is movably installed inside the bearing plate 22, and the bolt passes through one end of the bearing plate 22 and is threaded to the inside of the fixing plate 23. A fitting groove 24 is provided on one side of the outer wall of the fixing plate 23, and fitting blocks 25 for limiting the position are installed on both sides of the outer wall of the bearing plate 22. The fitting blocks 25 are located inside the fitting groove 24.

[0035] In use, the relative position between the fixing plate 23 and the support plate 22 can be restricted by the cooperation of the fitting block 25 and the fitting groove 24, ensuring the vertical position of the support plate 22 and the sleeve 3, ensuring that the axial position of the sleeve 3 and the detection probe 15 is the same, and the fixing plate 23 and the support plate 22 can be connected by bolts, ensuring that the position of the support plate 22 outside the fixing plate 23 is stable, and the position of the sleeve 3 can be maintained. Then, the operator adjusts the position of the base 13 by using the clamping seat 11, the first adjusting rod 1 and the second adjusting rod 12 respectively, ensuring the stable placement of the base 13 and improving the position adjustment efficiency of the detection probe 15.

[0036] To control adsorption pressure, for example, such as Figure 4 As shown, a piston plate 33 is interference-fitted onto the outer wall of one end of the piston rod 34. The piston plate 33 is in contact with the inner wall of the sleeve 3. A pull ring is installed on one side of the outer wall of the piston rod 34, and the pull ring is located on the outside of the sleeve 3.

[0037] When in use, the piston plate 33 and the sleeve 3 can form a good sealing effect, and the pull ring makes it convenient for the operator to pull the piston rod 34. Thus, when the suction cup 31 is attached to the outer wall of the rotor, the pressure inside the sleeve 3 can be adjusted by moving the piston rod 34 to ensure the adsorption strength of the suction cup 31 on the outer wall of the rotor.

[0038] To maintain the usage location, for example, such as Figure 4 As shown, slots 32 are symmetrically opened on both sides of the outer wall of the sleeve 3, and connecting brackets 35 are installed on both sides of the outer wall of the piston rod 34. A buckle 36 is installed on one side of the connecting bracket 35, and the buckle 36 is snapped into the slot 32.

[0039] In use, the buckle 36 and the slot 32 cooperate to lock the piston rod 34 in different positions, thereby maintaining the internal pressure of the suction cup 31. This ensures that the position of the detection probe 15 is stable when the operator adjusts the position of the clamping seat 11, the first adjusting rod 1, the second adjusting rod 12, and the base 13. The inner wall of the slot 32 adopts an inverted trapezoidal structure, and the shape of the buckle 36 is adapted to the shape of the inner wall of the slot 32. The connecting frame 35 is made of polyurethane material to ensure that the connecting frame 35 has a rebound force, which can maintain the stability of the buckle 36 inside the slot 32, thereby locking the position of the piston rod 34. When unlocking, the operator bends the buckle 36, causing the connecting frame 35 to bend and deform, thereby disengaging the buckle 36 from the slot 32, allowing the piston rod 34 to move. Furthermore, by using different positions of the slot 32, different usage positions of the piston rod 34 can be restricted.

[0040] In use, the rotor is fixed on a dynamic balancing machine, and the suction cup 31 on one side of the sleeve 3 is attached to the outer wall of the rotor. The operator pulls the pull ring on one side of the piston rod 34, causing the piston plate 33 to move inside the sleeve 3, drawing out the air inside the sleeve 3, creating a negative pressure environment inside the sleeve 3 and the suction cup 31. This keeps the suction cup 31 in a stable position attached to the outer wall of the rotor, thus limiting the position of the detection probe 15. At the same time, the length of the limiting rod 21 maintains the distance between the detection probe 15 and the rotor. The buckle 36 is engaged in the slots 32 on both sides of the sleeve 3, locking the piston rod 34 in a suitable position, maintaining the internal pressure of the suction cup 31, ensuring the stability of the detection probe 15 during subsequent adjustments to other parts of the device, and ensuring that the voltage formed between the detection probe 15 and the rotor due to the distance is within the specified range.

[0041] By adjusting the relative positions between the clamping seat 11, the first adjusting rod 1, and the second adjusting rod 12, the position of the base 13 can be adjusted to ensure that the base 13 is placed stably on the work surface. Then, the operator pries the buckle 36 to reset the piston plate 33, restore the pressure inside the suction cup 31, and disassemble the limit rod 21 and the sleeve 3 with screws to prevent the sleeve 3 from obstructing the detection probe 15 and the rotor.

[0042] The dynamic balancing machine drives the rotor to rotate. The operator first performs a dial indicator check on the rotor's vibration measurement interface, requiring the runout to be within 0.005 mm. After passing the dial indicator check, the vibration of the rotor's vibration measurement interface is measured using the detection probe 15. The runout value on the surface of the rotor's vibration measurement interface is compared with the dial indicator data; the two should be consistent. If it exceeds a certain range, the surface of the rotor's vibration measurement interface needs to be repaired until the result of the detection probe 15 matches the dial indicator result. The detection probe 15 transmits the detected rotor vibration data to the matching analysis equipment via the extension cable 16, enabling real-time monitoring and analysis of the vibration data.

[0043] It should be noted that this utility model is a device for factory testing of water pump rotor vibration. All components in this utility model are known to those skilled in the art, and their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for factory testing of water pump rotor vibration, characterized in that, The assembly includes a first adjusting rod (1), a support frame (2), and a sleeve (3). A clamping seat (11) is rotatably mounted on the upper outer wall of the first adjusting rod (1). An assembly plate (14) is screwed inside the clamping seat (11). A support frame (2) is bolted to the lower outer wall of the assembly plate (14). A limit rod (21) is screwed to one side of the outer wall of the support frame (2). A fixing plate (23) is installed on one side of the outer wall of the limit rod (21). A bearing plate (22) is provided on the outside of the fixing plate (23). A sleeve (3) is installed on the upper outer wall of the bearing plate (22). A suction cup (31) is glued and fixed to one side of the outer wall of the sleeve (3). A piston rod (34) is movably installed inside the sleeve (3).

2. A device for detecting the vibration of a water supply pump rotor in a plant according to claim 1, characterized in that, A second adjusting rod (12) is provided on one side of the outer wall of the first adjusting rod (1). The second adjusting rod (12) is screwed to the first adjusting rod (1). A base (13) is screwed to the lower outer wall of the second adjusting rod (12).

3. A device for detecting the vibration of a water supply pump rotor in a plant according to claim 1, characterized in that, A detection probe (15) is installed on one side of the outer wall of the assembly plate (14), and an extension line (16) for data transmission is provided through the outer wall of one end of the assembly plate (14).

4. A device for detecting the vibration of a water supply pump rotor in a plant according to claim 1, characterized in that, Bolts are movably installed inside the bearing plate (22), and one end of the bolts is threaded through the bearing plate (22) and connected to the inside of the fixing plate (23). A fitting groove (24) is provided on one side of the outer wall of the fixing plate (23). Fitting blocks (25) for limiting the position are installed on both sides of the outer wall of the bearing plate (22). The fitting blocks (25) are located inside the fitting groove (24).

5. A device for detecting the vibration of a water supply pump rotor in a plant according to claim 1, characterized in that, A piston plate (33) is interference-fitted to the outer wall of one end of the piston rod (34). The piston plate (33) is in contact with the inner wall of the sleeve (3). A pull ring is installed on one side of the outer wall of the piston rod (34). The pull ring is located outside the sleeve (3).

6. A device for detecting the vibration of a water supply pump rotor in a plant according to claim 1, characterized in that, The sleeve (3) has symmetrical slots (32) on both sides of its outer wall. The piston rod (34) has a connecting frame (35) on both sides of its outer wall. A buckle (36) is installed on one side of the connecting frame (35), and the buckle (36) is snapped into the slot (32).

Images