Mounting tool for angle adjusting mechanism of full-adjustment vertical axial flow pump

Abstract

The utility model provides a mounting tool for an angle adjusting mechanism of a full-adjustment vertical axial flow pump. The mounting tool comprises a base plate, a positioning bearing assembly, a supporting adjusting column, a gradienter and a dial indicator. The lower portion of the base plate is provided with three positioning bearing assemblies which are evenly distributed in the circumferential direction, one positioning bearing assembly is provided with a bearing radial adjusting mechanism, the base plate is provided with three supporting adjusting columns which are evenly distributed in the circumferential direction, and the gradienter and the dial indicator are installed on the top face of the base plate. By arranging the rotatable base plate, the positioning bearing assembly, the supporting adjusting column, the gradienter and the dial indicator, the mounting condition of the angle adjusting mechanism of the full-adjustment vertical axial flow pump can be precisely measured, the mounting precision is greatly improved, the angle adjusting mechanism is flexible and reliable in action, tight in matching and free of jamming after being mounted, and the mounting precision is greatly improved. The matching precision between the bearing bushes is high, a large amount of oil leakage is avoided, the holding time of the pressure in the cavity is obviously prolonged, the starting interval time of the oil pump is prolonged, the labor cost and the time cost of installation are reduced, and the installation precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation measurement, and particularly relates to an installation tool for an angle adjustment mechanism of a fully adjustable vertical axial flow pump. Background Art

[0002] The fully adjustable vertical axial flow pump is a pump type with high flexibility. It can dynamically adjust the blade angle during operation to adapt to various working conditions. The design of this pump allows the operator to continuously adjust the blade angle of the pump through various control means, such as manual adjustment, electric operation, or an automated control system, to optimize the working performance of the pump. This pump is particularly suitable for large pumping stations that need to frequently change the flow rate and lift height, or other occasions where flexible adjustment of the pump performance is required. Through this adjustment mechanism, the fully adjustable vertical axial flow pump can ensure efficient and stable operation under different operating conditions. The fully adjustable vertical axial flow pump installed in the pumping station needs to be disassembled and overhauled regularly, and the regulator at the top of the pump needs to be disassembled and assembled.

[0003] As Figure 1 shown, the regulator 1 of the angle adjustment mechanism of the fully adjustable vertical axial flow pump is installed on the regulator base 2, the regulator base 2 is installed on the motor housing 3, and the angle adjustment mechanism main shaft 4 passes through the motor housing 3 and the regulator base 2 and then enters the regulator 1. The regulator 1 is composed of an oil receiving device, a pressure distribution valve, and an operating mechanism. Its function is to distribute the pressure oil in the pressure oil system to the pistons in the water pump impeller to adjust the installation angle of the blades. During normal operation, the water pump blades are rarely adjusted, and only according to the change of the water delivery flow rate and water level (at this time, the head also changes), and in accordance with the device characteristic curve, the blade angle is adjusted to make the unit operate in the high-efficiency area. When starting, the blades can be adjusted to a negative angle to reduce the starting torque and make it easier for the motor to be pulled into synchronization and put into normal operation. When stopping, the blades are adjusted to a positive angle to increase the resistance and reduce the reverse rotation time of the motor. This is the advantage of the fully adjustable pump.

[0004] During the initial installation and subsequent regular operation and maintenance, the regulator 1 needs to be disassembled and assembled repeatedly. The installation of the regulator 1 should be carried out after the installation of the water pump and the motor is completed. It is the last process of the installation of the entire unit, and the content includes assembly, concentricity, and horizontal alignment. The current installation method has the following problems:

[0005] 1) The measurement of the levelness is carried out by placing a frame level on the top surface of the regulator base 2 in four different directions. Each time the position where the level is placed changes greatly, and the machining accuracy of the top surface of the regulator base 2 is relatively low, resulting in the inability to ensure that the bottom surface of the level is coplanar when measuring at multiple positions. Therefore, the measurement accuracy cannot be guaranteed.

[0006] 2) Concentricity alignment relies on using a steel ruler to measure the radial distance from the circumferential end face of the inner wall of the top flange of the regulator base 2 to the main shaft 4 of the angle adjustment mechanism. The measurement method is rough and cannot guarantee the measurement accuracy.

[0007] 3) It is impossible to measure the runout of the main shaft 4 of the angle adjustment mechanism.

[0008] However, the required installation accuracy is relatively high. Specifically, the levelness should not be greater than 0.05 mm, and the non-concentricity should not be greater than 0.04 mm. Therefore, the existing installation method cannot guarantee the installation accuracy, which will cause a large amount of oil leakage at the pressure regulating valve, the external operating oil pipe, and the copper sleeve of the operating oil pipe, resulting in a short pressure holding time, frequent starting of the oil pressure pump, and frequent jamming and blocking phenomena when the operating mechanism is adjusted up and down. Utility Model Content

[0009] The purpose of the present utility model is to provide an installation tool for the angle adjustment mechanism of a fully adjustable vertical axial flow pump in view of the deficiencies in the above-mentioned prior art, aiming to solve the problem that the installation accuracy cannot be met during the installation of the angle adjustment mechanism of the fully adjustable vertical axial flow pump.

[0010] To achieve the above object, the present utility model adopts the following technical solutions:

[0011] An installation tool for the angle adjustment mechanism of a fully adjustable vertical axial flow pump includes a base plate, a positioning bearing assembly, a support adjustment column, a spirit level, and a dial indicator; three circumferentially evenly distributed positioning bearing assemblies are provided at the lower part of the base plate, and a bearing radial adjustment mechanism is provided at one of the positioning bearing assemblies. Three circumferentially evenly distributed support adjustment columns are provided on the base plate, and the support adjustment columns are threadedly connected to the base plate. The spirit level and the dial indicator are installed on the top surface of the base plate.

[0012] Preferably, an installation platform for installing the spirit level is provided on the base plate, and the installation platform protrudes inward from the annular part of the base plate. The spirit level can be fixed on the installation platform with two cable ties.

[0013] Preferably, the installation hole at the positioning bearing assembly where the bearing radial adjustment mechanism is provided on the base plate is an oblong hole.

[0014] Preferably, the bearing radial adjustment mechanism is a screw adjustment rod, and the rod end abuts against the side surface of the positioning bearing assembly.

[0015] Preferably, a ball is provided at the bottom end of the support adjustment column.

[0016] Preferably, the bearing of the positioning bearing assembly is a high-speed bearing.

[0017] Preferably, the number of the dial indicators is at least two, and the heads of each dial indicator are in contact with the main shaft of the angle adjustment mechanism but at different horizontal height positions.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] By setting a rotatable substrate, a positioning bearing assembly, a support adjustment column, a level gauge and a dial indicator, the installation condition of the angle adjustment mechanism of the fully adjustable vertical axial flow pump can be precisely measured by the device of the utility model, greatly improving the installation accuracy. After installing with this installation tool, the flatness and concentricity accuracy reach within 0.02 mm, the runout of the main shaft of the angle adjustment mechanism reaches within 0.04 mm, all accuracies are higher than the installation requirements, the angle adjustment mechanism operates flexibly and reliably after installation, with close fit and no jamming phenomenon, the fit accuracy between the bearing bushes is relatively high, there is no large amount of oil leakage, the cavity pressure holding time is significantly increased, the starting interval time of the oil pump is extended, which not only reduces the labor cost and time cost of installation, but also improves the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 is a schematic installation structure diagram of the angle adjustment mechanism of the fully adjustable vertical axial flow pump;

[0022] Figure 2 is a schematic structure diagram of the installation tool provided by the present utility model;

[0023] Figure 3 is a top view of the installation tool provided by the present utility model;

[0024] Figure 4 is Figure 3 a sectional view taken along line A-A in

[0025] Description of the reference numerals:

[0026] 1, regulator; 2, regulator base; 3, motor housing; 4, main shaft of the angle adjustment mechanism; 5, installation tool; 51, substrate; 52, positioning bearing assembly; 521, bearing radial adjustment mechanism; 522, oblong hole; 53, support adjustment column; 531, ball; 54, level gauge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments.

[0028] As Figures 2 to 4As shown in the figure, a full-adjustment vertical axial flow pump blade angle adjustment mechanism installation tool includes a base plate 51, a positioning bearing assembly 52, a support adjustment column 53, a level 54, and a dial indicator (the dial indicator is omitted in the figure); three circumferentially evenly distributed positioning bearing assemblies 52 are provided at the lower part of the base plate 51, and a bearing radial adjustment mechanism 521 is provided at one of the positioning bearing assemblies 52. Three circumferentially evenly distributed support adjustment columns 53 are provided on the base plate 51. The support adjustment columns 53 are threadedly connected to the base plate 51. The level 54 and the dial indicator are installed on the top surface of the base plate 51.

[0029] As Figure 2 shown, an installation platform for installing the level 54 is provided on the base plate 51, and the installation platform protrudes inwards from the annular part of the base plate. The level 54 can be fixed to the installation platform with two cable ties.

[0030] As Figure 3 and Figure 4 shown, the installation hole at the positioning bearing assembly 52 where the bearing radial adjustment mechanism 521 is provided on the base plate 51 is an oblong hole 522. The bearing radial adjustment mechanism 521 is a screw adjustment rod, and the rod end abuts against the side surface of the positioning bearing assembly 52. A ball 531 is provided at the bottom end of the support adjustment column 53 to facilitate the rotation of the base plate 51 during use. The bearing of the positioning bearing assembly 52 is a high-speed bearing with strong rigidity and better wear resistance.

[0031] The number of the dial indicators is at least two, and the heads of each dial indicator are in contact with the blade angle adjustment mechanism main shaft 4 but at different horizontal height positions, and the concentricity and runout of the blade angle adjustment mechanism main shaft 4 at different horizontal height positions can be detected simultaneously.

[0032] When using this installation tool 5, first place the substrate 51 on the regulator base 2, making the bearing sides of the two positioning bearing assemblies 52 in contact with the inner wall of the upper flange on the regulator base 2. Use the bearing radial adjustment mechanism 521 to press the bearing side of the third positioning bearing assembly 52 against the inner wall of the flange. Adjust the level of the substrate 51 by adjusting the three support adjustment columns 53 until the spirit level 54 shows a horizontal state and record the reading. Then rotate the substrate 51 by 180 degrees and read the spirit level 54 again. If it is not in a horizontal state, the angle that needs to be adjusted for the regulator base 2 can be calculated through the difference between the two readings. Adjust it by adding copper foil or other means at the lower flange of the regulator base 2. Repeat this process multiple times to adjust the upper surface of the regulator base 2 to a horizontal state. During the measurement process, at least four directions with an interval of 90 degrees should be measured. After leveling, turn on the magnetic switch of the base of the dial indicator, adsorb it on the substrate 51, make the head of the dial indicator contact with the main shaft 4 of the angle adjustment mechanism, and rotate the base 51 to detect the concentricity and runout. Multiple dial indicators can be set to detect the concentricity and runout at different horizontal heights of the main shaft 4 of the angle adjustment mechanism simultaneously.

[0033] The device of the present utility model can precisely measure the installation condition of the angle adjustment mechanism of a fully adjustable vertical axial flow pump by setting a rotatable substrate, positioning bearing assemblies, support adjustment columns, spirit level and dial indicator, greatly improving the installation accuracy. After installation with this installation tool, the levelness and concentricity accuracy reach within 0.02 mm, and the runout of the main shaft of the angle adjustment mechanism reaches within 0.04 mm. All accuracies are higher than the installation requirements. After installation, the angle adjustment mechanism operates flexibly and reliably, with tight cooperation and no jamming phenomenon. The fitting accuracy between the bearing bushes is relatively high, there is no significant oil leakage, the cavity pressure retention time is significantly increased, and the start interval of the oil pump is extended. The oil pump starts from 2 times per hour before to once every 4 - 6 hours now. This not only reduces the labor cost and time cost of installation, but also improves the installation accuracy.

[0034] The above has described the embodiments of the present utility model in detail through examples, but the content described is only an exemplary embodiment of the embodiments of the present utility model and cannot be considered as used to limit the implementation scope of the embodiments of the present utility model. The protection scope of the embodiments of the present utility model is defined by the claims. All those who use the technical solutions described in the embodiments of the present utility model, or those skilled in the art, inspired by the technical solutions of the embodiments of the present utility model, design similar technical solutions within the essence and protection scope of the embodiments of the present utility model to achieve the above technical effects, or make equivalent changes and improvements to the application scope, etc., should still fall within the patent coverage protection scope of the embodiments of the present utility model.

Claims

1. A fully adjustable vertical axial flow pump angle adjustment mechanism installation tool, characterized in that: The invention comprises a base plate (51), a positioning bearing assembly (52), a support adjustment column (53), a spirit level (54) and a dial indicator; the base plate (51) is provided with three circumferentially evenly distributed positioning bearing assemblies (52) at the bottom, one of the circumferentially evenly distributed positioning bearing assemblies (52) is provided with a bearing radial adjustment mechanism (521); the base plate (51) is provided with three circumferentially evenly distributed support adjustment columns (53), the support adjustment columns (53) are threadedly connected to the base plate (51), and the spirit level (54) and the dial indicator are mounted on the top surface of the base plate (51).

2. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to claim 1, characterized in that: The base plate (51) is provided with a mounting platform for mounting the level meter (54), and the mounting platform protrudes inwardly from the annular portion of the base plate.

3. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to claim 1, characterized in that: The mounting hole at the positioning bearing assembly (52) of the bearing radial adjustment mechanism (521) provided on the base plate (51) is an oblong hole (522).

4. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to claim 1, characterized in that: The bearing radial adjustment mechanism (521) is a spiral adjustment rod, the end of which abuts against the side of the positioning bearing assembly (52).

5. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to claim 1, characterized in that: A ball (531) is provided at the bottom end of the support adjustment column (53).

6. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to claim 1, characterized in that: The bearing of the positioning bearing assembly (52) is a high-speed bearing.

7. The fully adjustable vertical axial flow pump angle adjustment mechanism installation tool according to any one of claims 1 to 6, characterized in that: There are at least two dial indicators, and the dial heads of the dial indicators are in contact with the main shaft (4) of the angle adjustment mechanism but are located at different horizontal heights.

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