Large axial flow pump impeller static balance detection device
By designing a static balance testing device for large axial flow pump impellers, and utilizing the structure of a balance mandrel, baffle, and bearing, the problems of low sensitivity and low efficiency in existing technologies have been solved, achieving efficient static balance adjustment of the impeller.
Patent Information
- Application Number
- CN202520103146.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-16
AI Technical Summary
Existing static balancing methods for large axial flow pump impellers have low sensitivity, leading to deformation of the contact surface between the spindle and the guide rail of the balancing frame, and also resulting in low labor productivity.
Design a static balance testing device for a large axial flow pump impeller. The device uses a balance mandrel, baffle, bearing and V-shaped iron structure, and achieves static balance of the impeller by adjusting the counterweight.
It improves the sensitivity of impeller static balancing and labor productivity, reduces the deformation of the spindle and balancing frame guide rail, and simplifies the adjustment process.
Smart Images
Figure CN223710915U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to large -scale axial flow pump impeller balance field especially, a kind of large -scale axial flow pump impeller static balance detection device. BACKGROUND
[0002] Currently, when large -scale axial flow pump impeller is done static balance procedure, usually adopt the impeller of assembly is placed on balance frame, the distance of two wheel hub end surfaces of impeller is made equal by measuring with tape, make impeller gently roll to one side, mark at the lowest point when stopping naturally. Then make impeller roll in opposite direction, mark at the lowest point. Such repeated operation 3 to 4 times, the average position of each mark is the orientation of the unbalanced weight of impeller. A certain amount of counterweight is added in the uppermost light position, then the position of counterweight and the size of weight are adjusted by repeating the above operation, until impeller is placed on test stand and freely rolls, can stay in any position, then static balance is achieved. Using such balancing method, due to the large weight of impeller, the contact surface of mandrel and balance frame guide rail is deformed, and sensitivity is low, so it is urgent to develop a high-sensitivity impeller static balance device. SUMMARY
[0003] The utility model aims at providing a kind of large -scale axial flow pump impeller static balance detection device. To realize the above-mentioned purpose, the technical scheme of the utility model is as follows: a kind of large -scale axial flow pump impeller static balance detection device, including base, the large -scale axial flow pump impeller of being detected, 2 root struts, characterized in that, a balance mandrel is inserted in the center of the large -scale axial flow pump impeller of being detected, there is a baffle on the both ends of the large -scale axial flow pump impeller of being detected by bolt fixed on the large -scale axial flow pump impeller of being detected, there is locking nut fastening on balance mandrel on the outer side of left baffle, bearing is installed on the both ends of balance mandrel, bearing is located in the V groove of V iron, V iron bottom is connected in the top end of struts, and struts terminal end is fixed on base. The both ends of the large -scale axial flow pump impeller of being detected and baffle use mouth positioning. The bearing installed on the both ends of balance mandrel is deep groove ball bearing. The utility model has the advantages of simple adjustment structure, good universality and improved labor productivity. BRIEF DESCRIPTION OF DRAWINGS
[0004] Figure 1 It is the structural schematic diagram of the utility model.
[0005] Figure 2 It is the A end partial schematic view of Figure 1 DETAILED DESCRIPTION
[0006] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0007] The large axial flow pump impeller static balance detection device in the figure comprises a base 1, a large axial flow pump impeller 2 to be detected, two support columns 3, characterized in that a balance mandrel 4 is inserted in the center of the large axial flow pump impeller to be detected, each of the two ends of the large axial flow pump impeller to be detected is provided with a baffle 5 fixed on the large axial flow pump impeller to be detected by bolts 6, a locking nut fastening 7 is screwed on the balance mandrel outside the left baffle, each of the two ends of the balance mandrel is provided with a bearing 8, the bearing is located in a V groove of a V-shaped iron 9, the bottom of the V-shaped iron is connected to the top end of the support column, and the end of the support column is fixed on the base.
[0008] During installation, the baffles on the two sides are aligned with the stop opening of the large axial flow pump impeller to be detected, then the baffles are uniformly and symmetrically fastened by bolts, and finally the large axial flow pump impeller to be detected is fastened on the balance mandrel by the locking nut.
[0009] During detection, the balance mandrel is hoisted onto the V-shaped iron, the large axial flow pump impeller to be detected is gently rotated, and marks are made at the lowest points. Then the large axial flow pump impeller to be detected is rolled in the opposite direction, marks are made at the lowest points, and a certain amount of counterweight is added at the uppermost light position for counterweighting, until the large axial flow pump impeller to be detected can stop at any position, and static balance is achieved.
[0010] After the large axial flow pump impeller to be detected is balanced, the balance mandrel is hoisted, the balance mandrel is placed flat, the deep groove ball bearing is removed, the locking nut is removed, the balance mandrel is pulled out of the large axial flow pump impeller to be detected, and finally the baffles on the two sides are removed.
[0011] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A large axial flow pump impeller static balance detection device, comprising a base, a large axial flow pump impeller to be detected, and two support columns, characterized in that, A balance spindle is inserted into the center of the large axial flow pump impeller to be detected, and a baffle is fixed on the large axial flow pump impeller to be detected by bolts at both ends of the large axial flow pump impeller to be detected, a locking nut is screwed on the balance spindle outside the left baffle, bearings are installed at both ends of the balance spindle, the bearings are located in V grooves of V-shaped irons, the bottom of the V-shaped irons is connected to the top of a support, and the end of the support is fixed on a base.
2. The static balancing detection device for a large axial flow pump impeller according to claim 1, characterized in that, The large axial flow pump impeller to be detected is positioned by the stop opening between the baffle at both ends and the baffle.
3. The static balancing detection device for a large axial flow pump impeller according to claim 1, characterized in that, The bearings installed at both ends of the balance spindle are deep groove ball bearings.