Centering device for water feeding pump

Abstract

The utility model relates to the technical field of feed pumps, and discloses a feed pump centering device which comprises a positioning assembly, a fixing assembly and a connecting assembly. The positioning assembly comprises a dial plate, a fixing frame and a measuring piece, the fixing frame is arranged on one side of the dial plate, a first positioning hole used for installing the measuring piece is formed in the dial plate, two second positioning holes penetrating through the dial plate are formed in the two ends of the dial plate respectively, and the two second positioning holes are both used for installing the measuring piece; the fixing assembly and the positioning assembly are arranged in parallel at intervals. The fixing assembly is used for providing a positioning reference. One end of the connecting assembly is connected with the positioning assembly, the other end of the connecting assembly is connected with the fixing assembly, the connecting assembly comprises a first rod body and a second rod body, a cavity for installing the second rod body is formed in the first rod body, and the second rod body is slidably connected with the cavity in the horizontal direction; and the second rod body is used for adjusting the horizontal distance between the positioning assembly and the fixing assembly, so that the device is suitable for different distances between two couplings.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a water pump centering device. Background Technology

[0002] A feedwater pump is a specialized pump that pressurizes and delivers qualified, deoxygenated feedwater from the deaerator tank to the inlet of the boiler economizer to meet the water volume and pressure requirements for boiler operation. Centering the feedwater pump is a crucial step in its installation and maintenance. The main purpose of centering is to ensure that the two shafts of the feedwater pump coupling and the motor coupling can rotate normally, preventing vibration, damage, and reduced operating efficiency caused by misalignment. Ensuring strict concentricity of the rotation centers of the two shafts during pump installation and maintenance is essential. Misalignment will cause significant stress on the coupling, severely affecting the normal operation of the shaft, bearings, and other parts, and may even lead to vibration or damage to the entire machine and foundation.

[0003] Currently, the existing water pump couplings and motor couplings are connected using a short section, elastic diaphragm connection method. During the process of aligning the pump couplings during equipment maintenance, the measuring element often shakes during measurement because the magnetic base is not firmly attached, resulting in inaccurate measurement data. Alternatively, the measuring element cannot be properly attached to the other coupling due to excessive gap between the two couplings and insufficient length of the measuring rod, making measurement impossible. Utility Model Content

[0004] The technical problem this invention aims to solve is that, when aligning a water pump, the magnetic base of the measuring instrument is unstable, causing the measuring element to shake during measurement, resulting in inaccurate data. Furthermore, the distance between the two couplings exceeds the length of the measuring rod, preventing the measuring element from fitting properly with the other coupling and thus making measurement impossible.

[0005] To solve the above-mentioned technical problems, this utility model provides a water pump centering device, which includes a positioning component, a fixing component, and a connecting component. The positioning component is used to position one of the couplings and includes a dial indicator, a fixing frame, and a measuring component. The fixing frame is disposed on one side of the dial indicator. The dial indicator has a first positioning hole for installing the measuring component, and two second positioning holes are respectively opened at both ends of the dial indicator. Both second positioning holes are used to install the measuring component. The fixing component is arranged parallel to and spaced apart from the positioning component. The fixing component is fixed to another coupling to provide a positioning reference. One end of the connecting component is connected to the positioning component, and the other end is connected to the fixing component. The connecting component includes a first rod and a second rod. The first rod is connected to the fixing component, and the second rod is connected to the positioning component. The first rod has a cavity for installing the second rod inside. The second rod is slidably connected to the cavity in the horizontal direction. The second rod is used to adjust the horizontal distance between the positioning component and the fixing component.

[0006] In one embodiment, the fixing frame includes a first plate extending in a vertical direction and a second plate extending in a horizontal direction. One end of the first plate is connected to the dial indicator, and the other end is connected to the second plate. A first positioning hole is located on the second plate and penetrates the first plate in a vertical direction.

[0007] In one embodiment, the measuring element includes a first dial indicator and a second dial indicator. The first dial indicator is disposed inside the first positioning hole and is used to test the circumferential deviation of the two couplings. The second dial indicator is disposed in a one-to-one correspondence with the second positioning hole and is used to test the center deviation of the two couplings.

[0008] In one embodiment, a first set screw hole is provided on one side of the first positioning hole, and a set screw element is provided inside the first set screw hole to limit the displacement of the first dial indicator. A second set screw hole is provided on one side of each second positioning hole, and a set screw element is provided inside each second set screw hole to limit the displacement of the second dial indicator.

[0009] In one embodiment, the fixing component includes a fixing disk with three sets of mounting parts of different apertures, and each set of mounting parts is arranged circumferentially along the center of the fixing disk.

[0010] In one embodiment, each mounting section includes two mounting holes symmetrically arranged along the center of the fixed disk, and each mounting hole penetrates the fixed disk.

[0011] In one embodiment, a bearing is provided at one end of the fixed disk near the connecting assembly.

[0012] In one embodiment, the first rod has an open guide groove inside along its length, and a guide block is provided on the outer wall of the second rod at a position corresponding to the guide groove, with the guide block slidably connected to the guide groove.

[0013] In one embodiment, the second rod body has a plurality of fixing holes at one end away from the guide block. The fixing holes are spaced apart along the length of the second rod body. The first rod body also includes fixing bolts that are adapted to the fixing holes. The fixing bolts pass through the first rod body and are inserted into the fixing holes to limit the displacement of the second rod body in the horizontal direction.

[0014] In one embodiment, a bubble level is provided on the outer wall of the first rod, and the bubble level is located at the end of the first rod near the fixing component.

[0015] Compared with the prior art, the present invention provides a water pump centering device with the following advantages: Through the positioning component, in conjunction with the dial indicator, fixing frame, and measuring components, the positioning component can achieve precise positioning of one of the couplings. The dial indicator has a first positioning hole and two second positioning holes, which support the simultaneous installation of multiple measuring components, allowing for one-time measurement of the coupling's center deviation and circumferential deviation, effectively reducing repeated dial indicator disassembly and reassembly. The fixing component is fixed to the other coupling, providing a stable positioning reference for the entire water pump centering process. This design ensures the consistency of the measurement and adjustment reference, helping to reduce errors caused by unstable references and improving the stability of the water pump centering process. The design of the first and second rods in the connecting component allows for flexible adjustment of the horizontal distance between the positioning and fixing components, facilitating adaptation to situations where the distance between the two couplings exceeds the length of the dial indicator rod, preventing the measuring components from fitting against the other coupling. This effectively improves the applicability of the device to meet different installation requirements. The second rod slides horizontally with the cavity of the first rod, making the adjustment process smoother and more stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the centering device for the water pump according to an embodiment of the present invention.

[0017] Figure 2 This is a structural schematic diagram of the water pump centering device from another angle, according to an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the connecting components in the water pump centering device of this utility model embodiment.

[0019] In the diagram, 1 is the positioning component; 11 is the dial indicator; 12 is the fixing bracket; 121 is the first plate; 122 is the second plate; 13 is the first positioning hole; 14 is the first set screw hole; 15 is the second positioning hole; and 16 is the second set screw hole.

[0020] 2. Fixing component; 21. Fixing disc; 22. Mounting hole;

[0021] 3. Connecting assembly; 31. First rod; 311. Guide groove; 312. Fixing bolt; 32. Second rod; 321. Guide block; 322. Fixing hole. Detailed Implementation

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] In the description of this utility model, it should be understood that when an element is referred to as "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to or indirectly connected to the other element. The terms "mounted," "connected," and "attached" should be interpreted broadly, for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0024] In the description of this utility model, it should be understood that the terms "height," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0026] like Figures 1 to 3As shown, this utility model preferably provides a water pump centering device, which includes a positioning component 1, a fixing component 2, and a connecting component 3. The positioning component 1 is used to position one of the couplings. The positioning component 1 includes a dial indicator 11, a fixing frame 12, and a measuring component. The fixing frame 12 is disposed on one side of the dial indicator 11. The dial indicator 11 has a first positioning hole 13 for installing the measuring component. Two second positioning holes 15 are respectively opened at both ends of the dial indicator 11, and both second positioning holes 15 are used to install the measuring component. The fixing component 2 is arranged parallel to and spaced apart from the positioning component 1. It is fixed on another coupling to provide a positioning reference; one end of the connecting component 3 is connected to the positioning component 1, and the other end is connected to the fixing component 2. The connecting component 3 includes a first rod 31 and a second rod 32. The first rod 31 is connected to the fixing component 2, and the second rod 32 is connected to the positioning component 1. The first rod 31 has a cavity inside for installing the second rod 32. The second rod 32 is slidably connected to the cavity in the horizontal direction. The second rod 32 is used to adjust the horizontal distance between the positioning component 1 and the fixing component 2.

[0027] Based on the above technical features, this utility model embodiment, through the setting of the positioning component 1, with the cooperation of the dial indicator 11, the fixing frame 12, and the measuring components, can achieve precise positioning of one of the couplings. The dial indicator 11 is provided with a first positioning hole 13 and two second positioning holes 15, which support the simultaneous installation of multiple measuring components, allowing for one-time measurement of the center deviation and circumferential deviation of the coupling, effectively reducing the repeated disassembly and assembly of the dial indicator. The fixing component 2 is fixed on the other coupling, providing a stable positioning reference for the entire water pump centering process. This design ensures the consistency of the measurement and adjustment reference, helps reduce errors caused by unstable reference, and improves the stability of the water pump centering process. The design of the first rod 31 and the second rod 32 in the connecting component 3 allows the horizontal distance between the positioning component 1 and the fixing component 2 to be flexibly adjusted, facilitating the adaptation to situations where the distance between the two couplings exceeds the length of the dial indicator rod, making it impossible for the measuring components to fit the other coupling, effectively improving the applicability of this device to meet different installation requirements.

[0028] As some embodiments of this utility model, such as Figures 1 to 2As shown, the fixing frame 12 includes a first plate 121 extending vertically and a second plate 122 extending horizontally. One end of the first plate 121 is connected to the dial indicator 11, and the other end is connected to the second plate 122. A first positioning hole 13 is located on the second plate 122 and penetrates the first plate 121 vertically. The first plate 121 and the second plate 122 form an L-shaped support structure, which ensures that the mounting plane of the measuring component is perpendicular to the coupling axis, and also achieves a stable connection with the dial indicator 11 through the first plate 121, avoiding errors caused by structural deformation during measurement. By setting the first positioning hole 13 on the horizontally extending second plate 122, the measuring component can be perpendicularly attached to the coupling end face, and the axial runout data can be directly read without additional angle compensation, simplifying the operation process.

[0029] As some embodiments of this utility model, such as Figures 1 to 2 As shown, the measuring components include a first dial indicator and a second dial indicator. The first dial indicator is located inside the first positioning hole 13 and is used to test the circumferential deviation of the two couplings. The second dial indicator is correspondingly set in the second positioning hole 15 and is used to test the center deviation of the two couplings. The first dial indicator is vertically mounted on the first positioning hole 13, and its probe directly contacts the outer circumferential surface of the coupling. By rotating the coupling, the radial runout data is read. This arrangement eliminates the interference of axial movement on the circumferential measurement value, and can accurately obtain the circumferential deviation of the coupling. The two second dial indicators are symmetrically distributed at both ends of the dial indicator 11 in the second positioning holes 15, and their probes respectively contact the end faces of the couplings. The difference in the readings of the two second dial indicators directly reflects the center deviation value of the coupling. By reading the values ​​of the first and second dial indicators, the circumferential deviation and center deviation of the coupling are obtained, which allows subsequent operators to adjust the position of one of the couplings to eliminate the circumferential deviation and center deviation, thus ensuring a precise connection between the two couplings.

[0030] As some embodiments of this utility model, such as Figures 1 to 2 As shown, a first set screw hole 14 is provided on one side of the first positioning hole 13. A set screw is provided inside the first set screw hole 14 to limit the displacement of the first dial indicator. A second set screw hole 16 is provided on one side of each second positioning hole 15, and a set screw is provided inside each second set screw hole 16 to limit the displacement of the second dial indicator. Through the design of the first set screw hole 14, the second set screw hole 16, and the set screw, the first set screw hole 14, through thread engagement with the set screw, directly acts on the radial plane of the first dial indicator, effectively improving the installation stability of the first dial indicator; the second set screw hole 16, through thread engagement with the set screw, directly acts on the radial plane of each second dial indicator, effectively improving the installation stability of the second dial indicator. This design is particularly suitable for ensuring measurement stability under high speed or strong vibration conditions.

[0031] As some embodiments of this utility model, such as Figures 1 to 2 As shown, the fixing component 2 includes a fixing disc 21, on which three sets of mounting parts with different apertures are provided, and each set of mounting parts is arranged circumferentially along the center of the fixing disc 21. By using mounting parts with different apertures, the fixing disc 21 can be installed and fixed on couplings of different specifications. The same fixing disc 21 can be compatible with at least three or more specifications of couplings, reducing the number of spare parts and replacement time, and is suitable for mixed operation scenarios of multiple types of equipment. This fixing disc 21, through its multi-aperture group + circumferential distribution design, solves the pain points of poor adaptability, low efficiency, and insufficient stability of traditional fixing components 2, achieving the technical effect of a single disc serving multiple purposes.

[0032] As some embodiments of this utility model, such as Figures 1 to 2 As shown, each mounting section includes two mounting holes 22 symmetrically arranged around the center of the fixed disc 21, and each mounting hole 22 penetrates the fixed disc 21. The two holes of each mounting section are distributed symmetrically with the center of the disc as the center. After the tool is installed, a torque balance is formed, avoiding torque offset caused by single-point fixing. The mounting holes 22 penetrate the fixed disc 21, supporting the insertion of bolts or quick-release pins from both sides of the disc to achieve bidirectional locking.

[0033] As some embodiments of this utility model, such as Figures 1 to 2 As shown, a bearing (not shown in the figure) is provided at one end of the fixed disk 21 near the connecting assembly 3. The bearing converts the pushing and pulling force of the second rod 32 into rolling or sliding friction, avoiding jamming or wear caused by direct contact of the second rod 32.

[0034] As some embodiments of this utility model, such as Figure 3 As shown, an open guide block 321 is provided inside the second rod 32 along its length. A guide block 321 is also provided on the outer wall of the second rod 32 at a position corresponding to the guide groove 311. The guide block 321 is slidably connected to the guide groove 311. The open side of the guide groove 311 is used to constrain the movement range of the guide block 321, ensuring that the second rod 32 can only slide in a predetermined direction. The cooperation between the guide groove 311 and the guide block 321 improves the stability of the second rod 32 moving horizontally within the cavity of the first rod 31.

[0035] As some embodiments of this utility model, such as Figure 3As shown, the second rod 32 has multiple fixing holes 322 at its end opposite to the guide block 321. These fixing holes 322 are spaced apart along the length of the second rod 32. The first rod 31 also includes fixing bolts 312, which are fitted into the fixing holes 322. The fixing bolts 312 penetrate the first rod 31 and are inserted into the fixing holes 322 to limit the horizontal displacement of the second rod 32. Through the cooperation of the fixing holes 322 and the fixing bolts 312, the multiple fixing holes 322 are spaced apart along the length of the second rod 32. The fixing bolts 312 can be inserted into holes at different positions to lock the second rod 32 and the first rod 31 together. This allows the second rod 32 to move by different amounts of displacement in the horizontal direction, making it suitable for couplings with different spacings and improving the overall structural stability. During the operation of the device, the second rod 32 may sway horizontally due to vibration, external impact, etc. The cooperation between the fixing bolt 312 and the fixing hole 322 can effectively limit the horizontal displacement of the second rod 32, reduce the sway amplitude, make the device operate more smoothly, and extend the service life of the device.

[0036] As some embodiments of this utility model, such as Figures 1 to 3 As shown, a bubble level (not shown in the figure) is installed on the outer wall of the first rod 31, and the bubble level is located at the end of the first rod 31 near the fixing component 2. The bubble level is used to ensure the horizontal state of the dial indicator 11. During the measurement process, if the dial indicator 11 is tilted, it will cause the dial indicator pointer to deviate or the reading to be inaccurate. The bubble level monitors the levelness of the area near the dial indicator 11 in real time, prompting the operator to adjust the first rod 31 or the device posture in time to restore the dial indicator 11 to a horizontal state, thereby eliminating the measurement error caused by tilting and ensuring accurate and reliable measurement results.

[0037] In summary, compared with the prior art, the beneficial effects of the water pump centering device of this utility model embodiment are as follows: Through the setting of the positioning component 1, with the cooperation of the dial gauge 11, the fixing frame 12, and the measuring components, the positioning component 1 can achieve precise positioning of one of the couplings. The dial gauge 11 is provided with a first positioning hole 13 and two second positioning holes 15, which support the simultaneous installation of multiple measuring components, allowing for the one-time measurement of the center deviation and circumferential deviation of the coupling, effectively reducing the repeated disassembly and assembly of the dial gauge; the fixing component 2 is fixed on the other coupling, providing a centering mechanism for the entire water pump centering process. A stable positioning reference is provided, ensuring the consistency of the measurement and adjustment reference, which helps to reduce errors caused by unstable reference and improves the stability of the water pump centering process. The design of the first rod 31 and the second rod 32 in the connecting assembly 3 allows the horizontal distance between the positioning assembly 1 and the fixing assembly 2 to be flexibly adjusted, which is convenient to adapt to the situation where the distance between the two couplings exceeds the length of the measuring rod, making it impossible for the measuring part to fit with the other coupling. This effectively improves the applicability of the device to meet different installation requirements. The second rod 32 slides in the horizontal direction with the cavity of the first rod 31, making the adjustment process smoother and more stable.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A water pump centering device characterized by, include: Positioning component (1), fixing component (2), and connecting component (3); The positioning component (1) is used to position one of the couplings. The positioning component (1) includes a dial indicator (11), a fixing frame (12), and a measuring component. The fixing frame (12) is disposed on one side of the dial indicator (11). The dial indicator (11) has a first positioning hole (13) for installing the measuring component. The two ends of the dial indicator (11) have two second positioning holes (15) that penetrate the dial indicator (11). Both second positioning holes (15) are used to install the measuring component. The fixing component (2) is arranged parallel to and spaced apart from the positioning component (1), and the fixing component (2) is fixed on another coupling to provide a positioning reference; One end of the connecting component (3) is connected to the positioning component (1), and the other end is connected to the fixing component (2). The connecting component (3) includes a first rod (31) and a second rod (32). The first rod (31) is connected to the fixing component (2), and the second rod (32) is connected to the positioning component (1). The first rod (31) has a cavity inside for installing the second rod (32). The second rod (32) is slidably connected to the cavity in the horizontal direction. The second rod (32) is used to adjust the horizontal distance between the positioning component (1) and the fixing component (2).

2. The water pump centering device of claim 1, wherein, The fixing frame (12) includes a first plate (121) extending in a vertical direction and a second plate (122) extending in a horizontal direction. One end of the first plate (121) is connected to the dial (11), and the other end is connected to the second plate (122). The first positioning hole (13) is located on the second plate (122), and the first positioning hole (13) penetrates the first plate (121) in a vertical direction.

3. The water pump centering device of claim 2, wherein, The measuring components include a first dial indicator and a second dial indicator. The first dial indicator is disposed inside the first positioning hole (13) and is used to test the circumferential deviation of the two couplings. The second dial indicator is disposed in a one-to-one correspondence with the second positioning hole (15) and is used to test the center deviation of the two couplings.

4. The water pump centering device of claim 3, wherein, A first set screw hole (14) is provided on one side of the first positioning hole (13), and a set screw is provided inside the first set screw hole (14) to limit the displacement of the first dial indicator. A second set screw hole (16) is provided on one side of each second positioning hole (15), and a set screw is provided inside each second set screw hole (16) to limit the displacement of the second dial indicator.

5. The water pump centering device of claim 1, wherein, The fixing component (2) includes a fixing disk (21), on which three sets of mounting parts with different apertures are provided, and each set of mounting parts is arranged circumferentially along the center of the fixing disk (21).

6. The water pump centering device of claim 5, wherein, Each set of mounting parts includes two mounting holes (22) symmetrically arranged along the center of the fixed disk (21), and each mounting hole (22) penetrates the fixed disk (21).

7. The water pump centering device of claim 6, wherein, The fixed disc (21) is provided with a bearing at one end near the connecting assembly (3).

8. The water pump centering device of claim 1, wherein, The first rod (31) has an open guide groove (311) inside along its length direction. The second rod (32) has a guide block (321) on its outer wall corresponding to the guide groove (311). The guide block (321) is slidably connected to the guide groove (311).

9. The water pump centering device of claim 8, wherein, The second rod (32) has a plurality of fixing holes (322) at one end away from the guide block (321). The fixing holes (322) are spaced apart along the length of the second rod (32). The first rod (31) also includes fixing bolts (312). The fixing bolts (312) are adapted to the fixing holes (322). The fixing bolts (312) penetrate the first rod (31) and are inserted into the fixing holes (322) to limit the displacement of the second rod (32) in the horizontal direction.

10. The water pump centering device of claim 1, wherein, A bubble level is provided on the outer wall of the first rod (31), and the bubble level is located at one end of the first rod (31) near the fixing component (2).

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