Water pump impeller ring coating repair tool

Abstract

The present invention belongs to the field of nuclear power technology, and specifically relates to a water pump impeller mouth ring coating repair tool. The water pump impeller mouth ring coating repair tool disclosed by the present invention can adjust the distance between each baffle and the positioning shaft according to the need of coating repair, thereby extruding the coating so that the surface of the repaired coating is flat and smooth, and the gap with the inside of the pump body is kept uniform after reinstallation, and the gap distance can be effectively controlled. The speed and quality of impeller mouth ring coating construction are improved, the gap deviation with the pump body is reduced, and the damage to the impeller during operation is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of nuclear power, and in particular relates to a water pump impeller ring coating repair tool. Background Art

[0002] In the related technology, during the repair construction of the anti-corrosion coating of the impeller mouth ring of the water pump, the construction workers usually manually repair the anti-corrosion coating for repair construction, which is a great test of the experience and skills of the construction workers. During the construction process, it is easy for human errors to cause inconsistent coating thickness, and the construction period is long. If it is found that the gap between the impeller mouth ring and the pump body is large or uneven after reinstallation, it will increase the degree of seawater scouring during the normal operation of the impeller and accelerate the degree of damage to the impeller. However, rework will bring a lot of workload and affect the construction period and even the entire maintenance progress. Summary of the invention

[0003] In order to overcome the problems existing in the related art, a water pump impeller ring coating repair tool is provided.

[0004] According to one aspect of an embodiment of the present disclosure, a water pump impeller ring coating repair tool is provided, the water pump impeller ring coating repair tool comprising: a positioning shaft, a plurality of positioning components;

[0005] The positioning shaft is used to be inserted into the shaft hole of the water pump impeller;

[0006] Each positioning assembly includes: a fixed base, a threaded rod, a movable block, and a baffle;

[0007] In each positioning assembly, one end of the fixed base of the positioning assembly is fixedly connected to the outer side wall of the positioning shaft, one end of the threaded rod of the positioning assembly is bearing-connected to the other end of the fixed base, the movable block 13 of the positioning assembly is threadedly connected to the other end of the threaded rod, and the baffle of the positioning assembly is fixedly connected to the outer side of the movable block 13;

[0008] Rotating the threaded rod of each positioning assembly can cause the movable block and the baffle of the positioning assembly to move along the threaded rod;

[0009] The threaded rods are located on the same axial plane, and the baffles are arc-shaped and located on the same circumference.

[0010] In a possible implementation, each positioning assembly further includes: a connecting rod assembly, the connecting rod assembly including a first connecting rod and a second connecting rod;

[0011] One end of the first connecting rod is hinged to the fixed base of the positioning assembly, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the sliding block of the positioning assembly.

[0012] In a possible implementation, each positioning assembly includes a plurality of connecting rod assemblies.

[0013] In a possible implementation, a handle is provided at the other end of the threaded rod of each positioning assembly.

[0014] In a possible implementation, the threaded rods are evenly distributed around the positioning shaft.

[0015] In a possible implementation, the baffles can be enclosed to form a cylinder.

[0016] In a possible implementation, the baffle of each positioning assembly is made of semi-hard plastic.

[0017] In a possible implementation, each threaded rod and each movable block is made of stainless steel.

[0018] The beneficial effect of the present disclosure is that the water pump impeller ring coating repair tool of the present disclosure can adjust the distance between each baffle and the positioning shaft according to the need of coating repair, thereby squeezing the coating so that the coating surface after such repair is flat and smooth, and the gap with the inside of the pump body is kept uniform after reinstallation, and the gap distance can be effectively controlled. The speed and quality of impeller ring coating construction are improved, the gap deviation with the pump body is reduced, and the damage to the impeller during operation is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of a water pump impeller ring coating repair tool according to an exemplary embodiment. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 FIG. 1 is a schematic diagram of a water pump impeller ring coating repair tool according to an exemplary embodiment. Figure 1 As shown, the water pump impeller ring coating repair tool comprises: a positioning shaft 10 and a plurality of positioning components; the positioning shaft 10 is used to be inserted into the shaft hole of the water pump impeller;

[0022] Each positioning assembly includes: a fixed base 11, a threaded rod 12, a movable block 13, and a baffle 14;

[0023] In each positioning component, one end of the fixed base 11 of the positioning component is fixedly connected to the outer wall of the positioning shaft 10, and the other end of the fixed base 11 can be connected to the bearing, and one end of the threaded rod 12 of the positioning component can be connected to the bearing, so that the threaded rod 12 can rotate in the bearing relative to the fixed base 11.

[0024] The movable block 13 of the positioning assembly is threadedly connected to the other end of the threaded rod 12, and the baffle 14 of the positioning assembly is fixedly connected to the outer side of the movable block 13; rotating the threaded rod 12 of each positioning assembly can make the movable block 13 and the baffle 14 of the positioning assembly move along the threaded rod 12; for example, rotating the threaded rod 12 along a first direction (for example, clockwise) can make the movable block 13 and the baffle 14 move along the threaded rod 12 toward the positioning shaft 10, and rotating the threaded rod 12 along a second direction (for example, counterclockwise) can make the movable block 13 and the baffle 14 move along the threaded rod 12 away from the positioning shaft 10.

[0025] The threaded rods 12 are located on the same axial plane, and the baffles 14 are arc-shaped and located on the same circumference.

[0026] The water pump impeller ring coating repair tool disclosed in the present invention can adjust the distance between each baffle 14 and the positioning shaft 10 according to the need of coating repair, thereby squeezing the coating so that the coating surface after repair is flat and smooth, and the gap with the inside of the pump body is kept uniform after reinstallation, and the gap distance can be effectively controlled. The speed and quality of impeller ring coating construction are improved, the gap deviation with the pump body is reduced, and the damage to the impeller during operation is reduced.

[0027] In one possible implementation, Figure 1 As shown, each positioning assembly further includes: a connecting rod assembly 15, the connecting rod assembly 15 includes a first connecting rod 150 and a second connecting rod 151;

[0028] One end of the first connecting rod 150 is hinged to the fixed base 11 of the positioning assembly, the other end of the first connecting rod 150 is hinged to one end of the second connecting rod 151, and the other end of the second connecting rod 151 is hinged to the sliding block of the positioning assembly.

[0029] In this way, each connecting rod assembly 15 can maintain the stability of the corresponding movable block 13 and the baffle plate 14 during the movement, and prevent each movable block 13 and the baffle plate 14 from being separated from the corresponding threaded rod 12 or being too close to the positioning shaft 10.

[0030] In a possible implementation, each positioning assembly includes a plurality of connecting rod assemblies.

[0031] In one possible implementation, Figure 1 As shown, a handle 16 is provided at the other end of the threaded rod 12 of each positioning assembly, which makes it convenient for maintenance personnel to rotate the threaded rod.

[0032] In a possible implementation, the threaded rods are evenly distributed around the positioning shaft.

[0033] In a possible implementation, the baffles can be enclosed to form a cylinder.

[0034] In a possible implementation, the baffle of each positioning assembly is made of semi-hard plastic.

[0035] In a possible implementation, each threaded rod and each movable block is made of stainless steel.

[0036] In an application example, the following operations are performed:

[0037] First, assemble the water pump impeller ring coating repair tool disclosed in the present invention. The water pump impeller ring coating repair tool may include three positioning components. Rotate each threaded rod to move each sliding block outward to the maximum position that can be moved. Then, install the three drive devices on the reserved screw holes of the positioning center axis respectively. At this time, the assembly of the special tool is completed.

[0038] Then, put the positioning shaft of the water pump impeller ring coating repair tool into the impeller shaft hole, so as to realize the center of the positioning circle and prevent the coating of the impeller ring from deviating from the center after repair.

[0039] Attach the coating to the impeller mouth ring, and according to the distance between the impeller mouth ring and the internal gap of the pump body specified in the operating procedures, rotate each threaded rod so that the distance between each baffle and the positioning shaft is adjusted so that each baffle extrude the coating to the specified coating thickness and remain stationary.

[0040] After the coating is solidified, rotate the threaded rods to separate the baffles from the coating, and remove the pump impeller ring coating repair tool. In this way, the repaired coating surface is flat and smooth, and the gap with the pump body is kept uniform after reinstallation, and the gap distance can be effectively controlled.

[0041] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A water pump impeller ring coating repair tool, characterized in that: The water pump impeller ring coating repair tool comprises: a positioning shaft and a plurality of positioning components; The positioning shaft is used to be inserted into the shaft hole of the water pump impeller; Each positioning assembly includes: a fixed base, a threaded rod, a movable block, and a baffle; In each positioning assembly, one end of the fixed base of the positioning assembly is fixedly connected to the outer side wall of the positioning shaft, one end of the threaded rod of the positioning assembly is bearing-connected to the other end of the fixed base, the movable block of the positioning assembly is threadedly connected to the other end of the threaded rod, and the baffle of the positioning assembly is fixedly connected to the outer side of the movable block; Rotating the threaded rod of each positioning assembly can cause the movable block and the baffle of the positioning assembly to move along the threaded rod; Each threaded rod is located on the same axial plane, and each baffle is arc-shaped and located on the same circumference; Put the positioning shaft of the water pump impeller ring coating repair tool into the impeller shaft hole; Attach the coating to the impeller mouth ring, rotate the threaded rods according to the distance between the impeller mouth ring and the internal gap of the pump body specified in the operating procedures, adjust the distance between the baffles and the positioning shaft, so that the baffles extrude the coating to the specified coating thickness and keep it still; After the coating is solidified, rotate the threaded rods to separate the baffles from the coating, and remove the water pump impeller ring coating repair tool; A handle is arranged at the other end of the threaded rod of each positioning assembly; and the threaded rods are evenly distributed around the positioning shaft.

2. The water pump impeller ring coating repair tool according to claim 1, characterized in that: Each positioning assembly further includes: a connecting rod assembly including a first connecting rod and a second connecting rod; One end of the first connecting rod is hinged to the fixed base of the positioning assembly, the other end of the first connecting rod is hinged to one end of the second connecting rod, and the other end of the second connecting rod is hinged to the sliding block of the positioning assembly.

3. The water pump impeller ring coating repair tool according to claim 2, characterized in that: Each positioning assembly includes a plurality of connecting rod assemblies.

4. The water pump impeller ring coating repair tool according to claim 1, characterized in that: The baffles can be enclosed to form a cylinder.

5. The water pump impeller ring coating repair tool according to claim 1, characterized in that: The baffle of each positioning assembly is made of semi-hard plastic.

6. The water pump impeller ring coating repair tool according to claim 1, characterized in that: The material of each threaded rod and movable block is stainless steel.

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