Installation and adjustment device for circulating water pump of nuclear power plant
By using a circulating water pump installation and adjustment device including a bracket body, adjustment seat and vertical adjustment components in nuclear power plants, the problems of large workload, high manpower consumption and high adjustment difficulty in maintenance and disposal of circulating water pumps are solved, and accurate level and concentricity adjustment is achieved, and efficiency and safety are improved.
Patent Information
- Application Number
- CN202420854624.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The maintenance and disposal of circulating water pumps in nuclear power plants is large, the labor consumption is high, the level and concentricity adjustment is difficult, the accuracy is poor, and the construction period is long, the efficiency is low, and the safety is insufficient.
A nuclear power plant circulation water pump installation adjustment device is provided, including a bracket body, an adjustment seat and a vertical adjustment component. Through the uniform distribution of the vertical adjustment components at the bottom of the adjustment seat, the horizontality and concentricity of the main components of the circulation water pump are realized.
The precise adjustment of the level and concentricity of the main components of the circulating water pump is achieved, which reduces the workload and labor consumption of maintenance and disposal, improves efficiency and safety, ensures the uniform assembly clearance of the pump's bearing system, and improves the operating reliability and service life of the pump.
Smart Images
Figure CN222643667U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of circulating water pump maintenance equipment, and in particular to a circulating water pump installation and adjustment device for a nuclear power plant. Background Art
[0002] A large number of circulating water pumps are used in the water circulation system of nuclear power plants. After these circulating water pumps have been used for a certain period of time or when they fail, they need to be disassembled and repaired as a whole before being reinstalled. In order to ensure the uniformity of the gap between the stator and rotor of the circulating water pump and the clearance of the rotor bearing, vertical assembly is required during installation to ensure the horizontality and concentricity of the installation of the main components of the water pump, thereby ensuring the uniform assembly gap of the bearing system of the circulating water pump after installation and ensuring the normal operation of the circulating water pump.
[0003] The circulating water pumps used in nuclear power plants are extremely large in size and weight, and need to be lifted with lifting equipment before disposal. Currently, there is no device on the market specifically for the installation and adjustment of such large circulating water pumps. In actual disposal operations, the circulating water pumps can only be supported and limited by building scaffolding and laying sleepers, and then the pump body, shaft head, pump cover, bearing bracket and other components of the circulating water pump are roughly adjusted in terms of horizontality, concentricity, pre-bias and other technical work. As a result, the maintenance and disposal of the circulating water pumps has a large workload, high manpower consumption, high difficulty in adjusting the horizontality and concentricity, poor precision, long disposal period, low efficiency, and is prone to safety accidents such as personal injury due to unstable fixation.
[0004] Especially when installing or replacing the elastic plate supporting thrust bearing of the circulating water pump, due to the large rigidity of the elastic plate structure, the installation accuracy requirements for each component are relatively higher. The existing methods such as setting up scaffolding and laying sleepers can no longer meet the installation accuracy requirements of such disposal work. Utility Model Content
[0005] In order to solve the above technical problems, the present application provides a circulating water pump installation and adjustment device for a nuclear power plant, which solves the technical problems of large workload, large manpower consumption, high difficulty in adjusting the levelness and concentricity, poor precision, long treatment period, low efficiency and insufficient safety caused by the existing maintenance and disposal methods of circulating water pumps. The circulating water pump installation and adjustment device for a nuclear power plant provided by the present application can realize precise adjustment of the levelness and concentricity of the main components of the circulating water pump in the vertical and horizontal directions, and the operation is simple, convenient and efficient, which reduces the workload and manpower consumption of maintenance and disposal, and improves the efficiency and safety of the maintenance and disposal and installation and adjustment of the circulating water pump.
[0006] The technical solution adopted by the present application to solve its technical problem is: to provide a nuclear power plant circulating water pump installation and adjustment device, the device includes a bracket body, an adjustment seat, and a vertical adjustment component, the bracket body is vertically arranged; the adjustment seat is horizontally arranged, movably connected to the bracket body, and is on the same vertical central axis as the bracket body; the vertical adjustment component is arranged on the bracket body and is evenly distributed at the bottom of the adjustment seat with the vertical central axis as the center, so as to adjust the horizontality by vertically abutting the adjustment seat.
[0007] In some embodiments, the vertical adjustment component includes a first fixing portion and a vertical adjustment top screw. The first fixing portion is fixedly connected to the bracket body and is evenly distributed below the bottom of the adjustment seat. The vertical adjustment top screws are respectively vertically threadedly connected to the corresponding first fixing portion and can be vertically telescopically adjusted compared to the corresponding first fixing portion to vertically press against the adjustment seat from the bottom.
[0008] In some embodiments, the device also includes a fastening assembly arranged between the bracket body and the adjustment seat, the fastening assembly includes a second fixing portion, a vertical adjustment groove and a threaded fastener, the second fixing portion is vertically evenly distributed on the adjustment seat, and at least partially movably abuts against the side wall of the bracket body; the vertical adjustment groove is respectively arranged on the side wall of the bracket body and / or the second fixing portion; the threaded fastener is respectively fixedly connected to the corresponding second fixing portion and the bracket body through the corresponding vertical adjustment groove.
[0009] In some embodiments, the adjustment seat is a circular ring structure, and a concentric circular ring-shaped limiting step is provided on the inner circle.
[0010] In some embodiments, the device further includes a centering adjustment component, which is disposed on the adjustment seat and is evenly distributed on the outer side of the limiting step with the vertical central axis as the center.
[0011] In some embodiments, the centering adjustment assembly includes a third fixing portion and a radial adjustment top screw. The third fixing portion is vertically fixedly connected to the adjustment seat and is evenly distributed on the outer side of the limiting step; the radial adjustment top screws are horizontally threadedly connected to the corresponding third fixing portion and can be telescopically adjusted along the radial direction of the limiting step compared to the corresponding third fixing portion.
[0012] In some embodiments, the top of the bracket body is horizontally stopped at the bottom of the adjustment seat.
[0013] In some embodiments, the bracket body includes columns and connecting parts. The columns are vertically arranged and evenly distributed at the bottom of the adjustment seat with the vertical central axis as the center; the connecting part is fixedly connected between the columns and encloses the columns to form a accommodating cavity.
[0014] In some embodiments, the device further comprises a horizontally arranged bottom plate, the bottom plate and the adjustment seat are vertically aligned, and the bracket body is detachably connected between the bottom plate and the adjustment seat.
[0015] In some embodiments, the device further comprises a bottom support, wherein the bottom support is detachably mounted on a fixed base of the circulating water pump, and the bottom plate is seated on the bottom support and aligned with the bottom support.
[0016] The beneficial effect of the present application is that after the circulating water pump is hoisted as a whole, it can be placed vertically on the device of the present application, so that the pump body, shaft head and other components of the circulating water pump are placed in the bracket body in a posture perpendicular to the ground, and the periphery of the pump cover, bearing bracket and other components of the circulating water pump are overlapped and limited on the adjustment seat. The adjustment seat of the device of the present application is movably connected to the bracket body and is on the same vertical central axis as the bracket body. This structural design allows the adjustment seat to always be centered on the vertical central axis in a non-horizontal posture, so that the adjustment seat can move up and down relative to the bracket body with the vertical central axis as the center. In actual use, the vertical adjustment components evenly distributed at the bottom of the adjustment seat can be used to push the adjustment seat upward from different positions, and the adjustment seat can be adjusted to a horizontal level by adjusting the ejection distance at different positions. In this way, the pump cover and / or bearing bracket and other components of the circulating water pump limited on the adjustment seat can be adjusted to the horizontal level and kept aligned with the corresponding components such as the pump body and shaft head of the circulating water pump, so that the main components of the circulating water pump can be assembled in a posture perpendicular to the ground, and the horizontal adjustment and concentricity adjustment of each component during the installation of the circulating water pump are achieved, thereby ensuring that the assembly clearance of the bearing system of the circulating water pump after installation is uniform, ensuring the assembly accuracy of each component of the circulating water pump, and improving the reliability and service life of the circulating water pump. Moreover, the device of the present application has a simple structure and is easy to use, which reduces the workload and manpower consumption of maintenance and treatment, improves the efficiency of maintenance and treatment and installation and adjustment of the circulating water pump, and has better safety. In addition, the device of the present application has high adjustment accuracy and can be applied to the maintenance and treatment of the elastic plate support thrust bearing of the circulating water pump. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, including:
[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application, including a bottom support, a bottom plate, a bracket body, an adjustment seat, a vertical adjustment component, a fastening component and a centering adjustment component;
[0019] Figure 2 It is a schematic diagram of the structural decomposition of an embodiment of the present application;
[0020] Figure 3 This is a schematic diagram of the main structure of an embodiment of the present application;
[0021] Figure 4 yes Figure 3 A schematic diagram of the enlarged local structure at point A in the middle;
[0022] Figure 5 yes Figure 3 A magnified schematic diagram of the local structure at B in the middle;
[0023] Figure 6 It is a schematic diagram of the overall structure of an adjustment seat, a second fixing part and a third fixing part according to an embodiment of the present application.
[0024] In the figure: 10. vertical center axis, 1. bottom support, 11. centering indicator position, 2. bottom plate, 21. centering reference position, 3. bracket body, 31. column, 32. connecting part, 33. accommodating chamber, 4. adjustment seat, 41. limiting step, 5. vertical adjustment component, 51. first fixing part, 52. vertical adjustment top screw, 6. fastening component, 61. second fixing part, 611. fixing hole, 62. vertical adjustment groove, 621. fixing hole, 63. threaded fastener, 631. fastening screw, 632. fastening nut, 7. centering adjustment component, 71. third fixing part, 711. second screw hole, 72. radial adjustment top screw. DETAILED DESCRIPTION
[0025] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. According to the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0026] See also Figure 1 to Figure 2The present application provides a circulating water pump installation and adjustment device for a nuclear power plant, the device comprising a support body 3, an adjustment seat 4 and a vertical adjustment assembly 5, wherein the support body 3 is vertically arranged perpendicular to the ground, the adjustment seat 4 is horizontally arranged and movably connected to the support body 3, and the adjustment seat 4 and the support body 3 are on the same vertical central axis 10, so that the adjustment seat 4 can move up and down compared with the support body 3. The vertical adjustment assembly 5 is arranged on the support body 3 and is evenly distributed at the bottom of the adjustment seat 4 with the vertical central axis 10 as the center, so as to adjust the horizontality by vertically abutting against the adjustment seat 4.
[0027] After the circulating water pump (not shown) is hoisted as a whole, it can be placed vertically on the device of the present application, so that the pump body, shaft head and other components of the circulating water pump are placed in the bracket body 3 in a posture perpendicular to the ground, and the periphery of the pump cover, bearing bracket and other components of the circulating water pump are overlapped and limited on the adjustment seat 4. The adjustment seat 4 of the device of the present application is movably connected to the bracket body 3 and is on the same vertical central axis 10 line as the bracket body 3. This structural design allows the adjustment seat 4 to always be centered on the vertical central axis 10 in a non-horizontal posture, so that the adjustment seat 4 can move up and down relative to the bracket body 3 with the vertical central axis 10 as the center. In actual use, the vertical adjustment components 5 evenly distributed at the bottom of the adjustment seat 4 can be used to push the adjustment seat 4 upward from different positions, and the adjustment seat 4 can be adjusted to a horizontal level by adjusting the ejection distance at different positions. In this way, the pump cover and / or bearing bracket and other components of the circulating water pump limited on the adjustment seat 4 can be adjusted to the horizontal level and kept aligned with the corresponding components such as the pump body and shaft head of the circulating water pump, so that the main components of the circulating water pump can be assembled in a posture perpendicular to the ground, and the horizontal adjustment and concentricity adjustment of each component during the installation of the circulating water pump are achieved, thereby ensuring that the assembly clearance of the bearing system of the circulating water pump after installation is uniform, ensuring the assembly accuracy of each component of the circulating water pump, and improving the reliability and service life of the circulating water pump. Moreover, the structure of the device of the present application is simple and easy to use, which reduces the workload and manpower consumption of maintenance and treatment, improves the efficiency of maintenance and treatment and installation and adjustment of the circulating water pump, and has better safety. In addition, the adjustment accuracy of the device of the present application is high, and it can be applied to the maintenance and treatment of the elastic plate support thrust bearing of the circulating water pump.
[0028] See also Figures 1 to 3 In a specific embodiment, the support body 3 of the device of the present application includes a plurality of columns 31 and a connecting portion 32 connected between the columns 31. Preferably, there are eight columns 31, all of which are vertically arranged perpendicular to the ground. The eight columns 31 are evenly distributed at the bottom of the adjustment seat 4 with the vertical central axis 10 as the center. The connecting portion 32 and the columns 31 together form a receiving cavity 33 that can accommodate the pump body and / or shaft head of the circulating water pump and other components.
[0029] Preferably, the column 31 and the connecting part 32 are made of channel steel, and the adjustment seat 4 is preferably made of thick steel plate to improve the overall structural strength of the bracket body 3 and the adjustment seat 4, and ensure the bearing capacity of the bracket body 3 on the adjustment seat 4 and the circulating water pump.
[0030] Preferably, the adjustment seat 4 is designed as a hollow annular structure. Since the adjustment seat 4 and the bracket body 3 are on the same vertical central axis 10, the adjustment seat 4 and the accommodating cavity 33 form a strictly centered structure, and the accommodating cavity 33 can be connected to the outside through the middle space of the adjustment seat 4. In actual use, after the circulating water pump is hoisted as a whole, its pump body and / or shaft head and other parts can be vertically placed in the accommodating cavity 33 through the middle space of the adjustment seat 4, and the periphery of the pump cover and / or bearing bracket and other parts of the circulating water pump can be overlapped on the adjustment seat 4.
[0031] The more the number of columns 31 is, the higher the overall structural strength of the bracket body 3 is, and the stronger the overall bearing capacity of the device is, which can effectively support and limit the large and overweight circulating water pumps used in nuclear power plants, and has higher safety. Of course, in some other embodiments, the number of columns 31 can be set to at least three, and the three columns 31 can fully stably support the adjustment seat 4 and the circulating water pump. In actual manufacturing, the number of columns 31 can be increased or decreased according to actual use requirements.
[0032] See also Figure 1 to Figure 2 In a specific embodiment, the device of the present application also includes a horizontally arranged base plate 2, which is preferably arranged as a circular plate structure, aligned with the adjustment seat 4 in the upper and lower parts, and the bracket body 3 is detachably connected between the base plate 2 and the adjustment seat 4.
[0033] The bottom plate 2 of the device of the present application serves as the bottom support plane of the bracket body 3, which can effectively increase the contact area between the bracket body 3 and the ground, improve the stability of the device of the present application after being placed on the ground, and provide better support and limit effects on the circulating water pump, which can prevent the problem of side tilt or tipping, and is safer. Moreover, the bottom plate 2 and the adjustment seat 4 are aligned up and down, so that the device of the present application can be strictly centered with the vertical central axis 10 as the center, which is convenient for the centering adjustment of each major component during the installation and adjustment of the circulating water pump, so that the major components of the circulating water pump can be assembled in a posture perpendicular to the ground. In addition, the bracket body 3 is detachably connected between the bottom plate 2 and the adjustment seat 4, so that the device of the present application can be disassembled as a whole, which is convenient for the device of the present application to be transported and disassembled between each circulating water pump, and is convenient for use.
[0034] See also Figure 1 to Figure 2Preferably, a hollow centering reference position 21 is provided at the center of the bottom plate 2. When the circulating water pump is vertically hoisted onto the device of the present application, the position of the circulating water pump can be adjusted accordingly through the centering reference position 21 to ensure that the circulating water pump can be aligned with the device of the present application as a whole after being placed as a whole, thereby reducing the difficulty of centering adjustment of various components of the circulating water pump during the later assembly process and improving the centering adjustment efficiency.
[0035] See also Figure 1 to Figure 2 In a specific embodiment, the device of the present application further comprises a bottom support 1, which is detachably mounted on a fixed base (not shown) of a circulating water pump, and a bottom plate 2 is seated on the bottom support 1 and aligned with the bottom support 1, so that the bottom plate 2, the bracket body 3 and the adjustment seat 4 are seated on the bottom support 1 as a whole, which is convenient for the on-site disassembly and maintenance of the circulating water pump. The main frame part of the bottom support 1 is preferably a cross-beam structure, made of high-strength steel, so that the bottom support 1 has better structural strength and bearing capacity.
[0036] Preferably, a circular centering indicator position 11 is provided in the middle of the bottom support 1, and the centering indicator position 11 can be aligned with the centering reference position 21 on the base plate 2 and is partially exposed outside the base plate 2, so that the staff can refer to it and adjust the base plate 2 and the adjustment seat 4 to be centered with the bottom support 1.
[0037] See also Figure 3 to Figure 4 In a specific embodiment, the vertical adjustment assembly 5 of the device of the present application includes a plurality of first fixing parts 51 and vertical adjustment top screws 52, wherein the first fixing parts 51 are preferably eight, made of steel plates, respectively welded and fixedly connected to the corresponding columns 31 of the bracket body 3, and evenly distributed below the bottom of the adjustment seat 4. A first screw hole (not shown) is vertically penetrated through each first fixing part 51, and the first screw hole is correspondingly located below the bottom of the adjustment seat 4. The vertical adjustment top screws 52 are respectively vertically threadedly connected to the corresponding first fixing parts 51 through the first screw holes, and can be vertically telescopically adjusted compared to the corresponding first fixing parts 51, so as to vertically press against the adjustment seat 4 from the bottom.
[0038] The vertical adjustment assembly 5 of the device of the present application has a vertical adjustment top screw 52 that can be adjusted in vertical telescopic manner compared to the corresponding first fixing portion 51, and the first fixing portion 51 is evenly distributed below the bottom of the circular adjustment seat 4, so that each vertical adjustment top screw 52 can push against the adjustment seat 4 from the bottom upward at different positions of the adjustment seat 4. During actual adjustment, the overall horizontality of the adjustment seat 4 can be adjusted by fine-tuning the upward push-out length of each vertical adjustment top screw 52.
[0039] See also Figure 4As a preference, the first fixing part 51 is respectively fixed on the top outer side wall of the corresponding column 31 and close to the adjustment seat 4. The vertical adjustment top screw 52 is a screw-type structure with a hexagonal head. During actual installation, the vertical adjustment top screw 52 is threadedly connected to the first fixing part 51 through the first screw hole from bottom to top, and its hexagonal head is located below the first fixing part 51, so that the top of the vertical adjustment top screw 52 vertically abuts against the adjustment seat 4. This structural design is convenient for the staff to control the upward ejection length of the vertical adjustment top screw 52 by screwing it on the outside of the bracket body 3 with a tool such as a hexagonal wrench, and the operation is simple and convenient.
[0040] The higher the density of the vertical adjustment components 5, the higher the precision of the horizontal adjustment of the adjustment seat 4, and the better the leveling effect. Of course, in some other embodiments, the vertical adjustment components 5 can be at least three groups, and the adjustment seat 4 can also be adjusted to the horizontal through three evenly distributed vertical adjustment screws 52. In actual manufacturing, the number of vertical adjustment components 5 can be increased or decreased according to actual use requirements.
[0041] See also Figures 1 to 5 In a specific embodiment, the device of the present application further includes a fastening assembly 6 disposed between the bracket body 3 and the adjustment seat 4, and used to lock and fix the adjustment seat 4 to the bracket body 3 after the horizontality is adjusted.
[0042] See also Figures 4 to 5 The fastening assembly 6 includes a plurality of second fixing parts 61, vertical adjustment slots 62 and threaded fasteners 63, wherein the second fixing parts 61 are preferably eight, which are vertically evenly distributed on the adjustment seat 4 and at least partially movably abut against the side walls of the corresponding columns 31 of the bracket body 3. The vertical adjustment slots 62 are respectively provided on the side walls of the columns 31 movably abutting against the corresponding second fixing parts 61 and / or on the second fixing parts 61. The threaded fasteners 63 are respectively fixedly connected to the corresponding second fixing parts 61 and the columns 31 of the bracket body 3 through the corresponding vertical adjustment slots 62.
[0043] The vertical adjustment groove 62 of the fastening assembly 6 can be opened only on the bracket body 3, or can be opened on the bracket body 3 and the second fixing part 61 at the same time, or can be opened only on the second fixing part 61. The present application does not make any limitation on this. It is sufficient to ensure that after the horizontality is adjusted, the threaded fastener 63 can lock and fix the corresponding second fixing part 61 and the column 31 of the bracket body 3 through the corresponding vertical adjustment groove 62.
[0044] See also Figures 4 to 6Preferably, the second fixing portion 61 is made of a steel plate and is vertically welded and fixed on the bottom end surface of the adjustment seat 4 and close to the inner circle of the adjustment seat 4. After the adjustment seat 4 is placed on the bracket body 3, the eight second fixing portions 61 are respectively movably abutted against the top of the inner side walls of the eight columns 31, so that the adjustment seat 4 can move up and down compared with the bracket body 3 to facilitate horizontal adjustment. The vertical adjustment slots 62 are respectively provided through the eight columns 31 and movably abut against the upper part of the corresponding second fixing portion 61. In actual use, the range of the adjustment of the adjustment seat 4 compared with the bracket body 3 can be limited by the slot length of the vertical adjustment slot 62 and the threaded fastener 63.
[0045] Preferably, a plurality of fixing holes 611 are provided at positions of the second fixing portion 61 corresponding to the vertical adjustment slots 62, and the threaded fastener 63 includes a fastening screw 631 and a fastening nut 632. During actual assembly, the fastening screw 631 sequentially passes through the corresponding fixing holes 611 and the vertical adjustment slots 62 from the inside to the outside from one side of the second fixing portion 61 to extend to the outside of the column 31, and the fastening nut 632 is threadedly connected to the corresponding fastening screw 631, so as to lock and fix the second fixing portion 61 and the corresponding column 31 together after the horizontality is adjusted.
[0046] It should be noted that the slot length of the vertical adjustment slot 62 must be greater than the outer diameter of the fastening screw 631 to ensure that the adjustment seat 4 can move up and down relative to the bracket body 3 under the restriction of the vertical adjustment slot 62 and the threaded fastener 63, so that the vertical adjustment component 5 can adjust the horizontality of the adjustment seat 4.
[0047] Preferably, when the adjustment seat 4 moves downward to the lowest point compared to the bracket body 3, the top of the column 31 of the bracket body 3 horizontally stops at the bottom of the adjustment seat 4, thereby forming support for the adjustment seat 4, preventing the adjustment seat 4 from moving downward excessively, and ensuring the overall load capacity of the device of the present application.
[0048] See also Figure 6 In a specific embodiment, a concentric annular limiting step 41 is provided at the top inner ring of the adjustment seat 4. In actual use, the annular limiting step 41 can be used to support and limit the pump cover and / or bearing bracket and other components of the circulating water pump to avoid the problem of components slipping or falling during the horizontal adjustment process, which is safer.
[0049] See also Figure 1 , Figures 4 to 6 In a specific embodiment, the device of the present application further includes a centering adjustment component 7, which is disposed on the adjustment seat 4 and is evenly distributed on the outer side of the limiting step 41 with the vertical central axis 10 as the center.
[0050] The centering adjustment assembly 7 includes a plurality of third fixing portions 71 and radial adjustment screws 72, wherein the third fixing portions 71 preferably have eight, which are respectively vertically fixedly connected to the adjustment seat 4 and evenly distributed on the outside of the limiting step 41 and correspond to the corresponding columns 31 up and down. Each third fixing portion 71 is provided with a second screw hole 711 (such as Figure 6 As shown in the figure), the radial adjustment top screws 72 are respectively connected to the corresponding third fixing parts 71 through the horizontal threads of the second screw holes, and can be telescopically adjusted along the radial direction of the limiting step 41 compared with the corresponding third fixing parts 71, so that the radial adjustment top screws 72 can be radially pressed against the pump cover and / or the bearing bracket and other components from the outside at different positions. During actual adjustment, the pump cover and / or the bearing bracket and other components can be adjusted to be aligned with other matching components of the circulating water pump by fine-tuning the radial protruding length of each radial adjustment top screw 72, thereby realizing precise adjustment of the concentricity of the main components of the circulating water pump, and the operation is simple and convenient.
[0051] See also Figures 4 to 6 Preferably, the third fixing part 71 is respectively fixed vertically on the top surface of the adjustment seat 4 and evenly distributed on the outside of the limiting step 41. The radial adjustment top screw 72 is a screw structure with a hexagonal head. During actual installation, the radial adjustment top screw 72 is threadedly connected to the third fixing part 71 through the second screw hole 711 from the outside to the inside, and its hexagonal head is located on the outside of the third fixing part 71, so that the inner end of the radial adjustment top screw 72 can radially push against the pump cover and / or bearing bracket of the circulating water pump. This structural design is convenient for the staff to control the length of the radial adjustment top screw 72 radially pushed toward the inside of the limiting step 41 by screwing with a hexagonal wrench or other tools on the outside of the adjustment seat 4, and the operation is simple and convenient.
[0052] The higher the density of the centering adjustment components 7, the higher the concentricity adjustment accuracy of the pump cover and / or bearing bracket of the circulating water pump, and the better the centering effect. Of course, in some other embodiments, the centering adjustment components 7 can be at least three groups, and the pump cover and / or bearing bracket can also be adjusted to the center through three evenly distributed radial adjustment screws 72. In actual manufacturing, the number of centering adjustment components 7 can be increased or decreased according to actual use requirements.
[0053] The above are only preferred implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A circulating water pump installation and adjustment device for a nuclear power plant, characterized in that: The device comprises: A support body (3), wherein the support body (3) is arranged vertically; An adjustment seat (4), the adjustment seat (4) being arranged horizontally, movably connected to the support body (3), and being located on the same vertical central axis as the support body (3); A vertical adjustment component (5) is arranged on the bracket body (3) and is evenly distributed at the bottom of the adjustment seat (4) with the vertical central axis as the center, so as to adjust the horizontality by vertically abutting against the adjustment seat (4).
2. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The vertical adjustment component (5) comprises: A first fixing portion (51), the first fixing portion (51) being fixedly connected to the bracket body (3) and evenly distributed below the bottom of the adjustment seat (4); A vertical adjustment top screw (52), wherein the vertical adjustment top screw (52) is respectively vertically threadedly connected to the corresponding first fixing portion (51) and can be adjusted to be telescopically vertically relative to the corresponding first fixing portion (51) so as to vertically abut the adjustment seat (4) from the bottom.
3. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The device further comprises a fastening assembly (6) arranged between the bracket body (3) and the adjustment seat (4), wherein the fastening assembly (6) comprises: A second fixing portion (61), the second fixing portion (61) being evenly distributed vertically on the adjustment seat (4) and at least partially movably abutting against a side wall of the bracket body (3); A vertical adjustment groove (62), the vertical adjustment groove (62) being respectively arranged on the side wall of the bracket body (3) and / or the second fixing portion (61); A threaded fastener (63), wherein the threaded fastener (63) is fixedly connected to the corresponding second fixing portion (61) and the bracket body (3) via the corresponding vertical adjustment groove (62).
4. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The adjustment seat (4) is a circular ring structure, and a concentric circular ring-shaped limiting step (41) is provided on the inner ring.
5. The nuclear power plant circulating water pump installation and adjustment device according to claim 4, characterized in that: The device further comprises a centering adjustment component (7), wherein the centering adjustment component (7) is arranged on the adjustment seat (4) and is evenly distributed on the outer side of the limiting step (41) with the vertical central axis as the center.
6. The nuclear power plant circulating water pump installation and adjustment device according to claim 5, characterized in that: The centering adjustment component (7) comprises: A third fixing portion (71), the third fixing portion (71) being vertically fixedly connected to the adjustment seat (4) and evenly distributed on the outer side of the limiting step (41); A radially adjustable top screw (72), wherein the radially adjustable top screw (72) is respectively horizontally threadedly connected to the corresponding third fixing portion (71) and can be telescopically adjusted along the radial direction of the limiting step (41) relative to the corresponding third fixing portion (71).
7. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The top of the bracket body (3) is horizontally stopped at the bottom of the adjustment seat (4).
8. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The support body (3) comprises: A column (31), the column (31) being arranged vertically and evenly distributed at the bottom of the adjustment seat (4) with the vertical central axis as the center; A connecting portion (32), the connecting portion (32) being fixedly connected between the upright posts (31) and enclosing the upright posts (31) to form a receiving cavity (33).
9. The nuclear power plant circulating water pump installation and adjustment device according to claim 1, characterized in that: The device further comprises a bottom plate (2) arranged horizontally, the bottom plate (2) and the adjustment seat (4) being aligned vertically, and the bracket body (3) being detachably connected between the bottom plate (2) and the adjustment seat (4).
10. The nuclear power plant circulating water pump installation and adjustment device according to claim 9, characterized in that: The device further comprises a bottom support (1), wherein the bottom support (1) is detachably mounted on a fixed base of a circulating water pump, and the bottom plate (2) is seated on the bottom support (1) and aligned with the bottom support (1).