Impeller static balance detection device

Abstract

An impeller static balance detection device relates to the technical field of impeller processing detection. The impeller static balance detection device comprises a clamping plate piece, a balancing weight, a fixing piece and a balance detection piece, wherein one end of an impeller blade is clamped in the clamping plate piece, the balancing weight is arranged in the clamping plate piece, the fixing piece penetrates through the clamping plate piece and the balancing weight and is used for fixing the impeller blade and the balancing weight, and the balance detection piece is detachably assembled on the clamping plate piece. When the impeller blades rotate to the horizontal plane, the impeller blades swing freely, and at the moment, the balance detection piece detects data in real time so as to measure the static balance deviation. By the adoption of the technical scheme, the method is suitable for online static balance of the impeller, rapid quantitative analysis of static balance deviation is achieved, manual visual inspection or timing errors are reduced, data transmission and analysis are convenient and rapid, and the accuracy and efficiency of detection data are improved.

Description

Technical Field

[0001] This utility model relates to the field of impeller processing and testing technology, specifically to an impeller static balance testing device. Background Technology

[0002] A fan, also known as a ventilator or blower, is a device for transporting gas. It mainly consists of an impeller, casing, motor, coupling, and main shaft. Fans are widely used in various industries such as thermal power generation, petrochemicals, cement, and metal smelting. In these industries, some fans transport abrasive or corrosive gases, making the impeller blades prone to wear or corrosion. Since wear or corrosion is not perfectly uniform, the impeller can become unbalanced after prolonged operation. This impeller imbalance leads to excessive vibration during operation, jeopardizing the fan's safe operation. The common method to address impeller imbalance is to perform static balancing. This method uses a stopwatch to statically balance the impeller. Weights are added to each blade sequentially, and then the blade is rotated to a horizontal position, allowing it to swing freely like a pendulum. The time from the start of the swing to the first point of stillness is recorded. The imbalance of the impeller is calculated based on the different swing times of each blade. However, this method requires the same person to operate the stopwatch throughout the process to avoid timing errors caused by different people operating the stopwatch. Furthermore, since the stopwatch requires manual start and stop, timing errors due to operation are unavoidable. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing an impeller static balance testing device that improves the accuracy and efficiency of testing data and avoids human measurement errors.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an impeller static balance testing device, comprising: a clamping plate holding one end of an impeller blade, a counterweight block disposed within the clamping plate, a fixing member passing through the clamping plate and the counterweight block for fixing the impeller blade and the counterweight block, and a balance testing member detachably assembled on the clamping plate;

[0005] When the impeller blades are rotated to a horizontal plane, they are allowed to swing freely. At this time, the balance detection device detects data in real time to measure the static balance deviation.

[0006] The present invention further includes a clamping plate comprising a first clamping plate and a second clamping plate; and a fixing member comprising a first fixing member having one end inserted through the first clamping plate for pressing the impeller blades against the second clamping plate.

[0007] The present invention further includes the following: the first fixing member includes a screw for abutting against the surface of the impeller blade, and a nut disposed on the side of the first clamping plate opposite to the impeller blade for tightening or loosening the screw.

[0008] The present invention further includes a handle for hand-gripping and turning at the end of the screw away from the impeller blades.

[0009] The present invention further includes a second fixing member that passes through the clamping plate and the counterweight for fixing the counterweight.

[0010] In a further embodiment of this invention, the balance detection component is a Bluetooth accelerometer.

[0011] In a further embodiment of this invention, both the clamping plate and the counterweight are made of metal.

[0012] The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, by setting a clamping plate and a detachable assembly balance detection component on the clamping plate, wherein the clamping plate holds the impeller blades and counterweight, and is fixed in the clamping plate by a fixing component, the loosening during the detection process and the resulting detection error are avoided. Moreover, by adjusting the tightness of the fixing component on the impeller blades, static balance detection of impellers of different thicknesses or types can be achieved, which has both versatility and flexibility. When the impeller blades are rotated to the horizontal plane and swing freely, the balance detection component collects the swing data in real time, and accurately locates the static balance deviation through quantitative analysis, avoiding the subjective error of manual visual inspection or traditional static detection, and significantly improving the detection accuracy and efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the impeller static balance testing device;

[0015] Figure 2 This is another structural schematic diagram of the impeller static balance testing device.

[0016] Explanation of reference numerals in the attached drawings: 100, clamping plate; 110, first clamping plate; 120, second clamping plate; 200, counterweight; 310, first fixing component; 311, screw; 3111, handle; 312, nut; 320, second fixing component; 321, bolt; 322, fixing nut; 400, balance detection component; 500, impeller blade. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0019] This embodiment relates to an impeller static balance testing device, referring to... Figure 1 and Figure 2 It includes: clamping plate 100, counterweight 200, fixing parts and balance detection parts 400.

[0020] The clamping plate component 100 has two corresponding clamping plates, including a first clamping plate 110 and a second clamping plate 120, with an impeller blade 500 disposed between the first clamping plate 110 and the second clamping plate 120. The first clamping plate 110 and the second clamping plate 120 provide symmetrical clamping force, ensuring that the rotation axis of the impeller coincides with the rotation center of the detection device, avoiding measurement deviation caused by unilateral force. A counterweight 200 is disposed between the first clamping plate 110 and the second clamping plate 120. Specifically, in this embodiment, two counterweights 200 are provided. In other embodiments, the number of counterweights 200 can also be one, three, or more, and the user can select different total weights of the counterweights 200 according to the weight, diameter, and wear degree of the impeller blade 500. A fixing member is passed through the clamping plate component 100 and the counterweight 200 to fix the counterweight 200 and to press against the impeller blade 500. The balance detection component 400 is detachably mounted on the outside of the clamping plate 100, facilitating the replacement of balance detection components 400 with different precision or adaptation to different impeller models, thus improving the versatility of the device. Specifically, the balance detection component 400 is a Bluetooth accelerometer sensor. The user connects to the sensor via Bluetooth through a terminal device to receive data information detected by the Bluetooth accelerometer sensor. The Bluetooth accelerometer sensor is adhered to the outside of the clamping plate 100 with expanding foam or double-sided adhesive for easy disassembly. In other embodiments, the balance detection component 400 may also be other detection components, and the balance detection component 400 may also be mounted on the outside of the clamping plate 100 in other detachable ways. Therefore, when the user selects any impeller blade 500, the clamping plate 100 clamps the root of the impeller blade 500, and the fixing piece is tightened until the impeller blade 500 is secure. Then, the counterweight 200 is fixed on the clamping plate 100, ensuring that the overall center of mass is aligned with the impeller axis. The impeller blade 500 is rotated to a horizontal position and released to swing freely. The balance detection component 400 collects the swing data of the impeller blade 500 in real time. When the impeller blade 500 is stationary, the sensor calibrates the zero point and the starting point of the swing cycle. Through time-domain analysis of acceleration changes (from 0 to peak value and back to zero), the swing cycle and imbalance are accurately calculated, eliminating manual timing errors and improving measurement accuracy. Finally, the operation is repeated for all impeller blades 500 to obtain the swing data of each impeller blade 500. The imbalance of the impeller is calculated based on the different pendulum motion time of each impeller blade 500. Based on the calculation results, the counterweight 200 is welded to the lighter side or the heavier side is ground until the swing cycle of each impeller blade 500 is consistent. Therefore, it is suitable for online static balancing of impellers, realizing rapid quantitative analysis of static balance deviation, reducing manual visual inspection or timing errors, and the data transmission and analysis are convenient and fast, improving the accuracy and efficiency of the detection data.

[0021] Specifically, in this embodiment, the weight of the counterweight 200 accounts for 0.15% of the weight of each impeller blade 500. In other embodiments, the weight of the counterweight 200 may also account for 0.05%, 0.1%, 0.12%, 0.14%, 0.16%, 0.18%, 0.2%, 0.25%, 0.3%, etc., of the weight of the counterweight 200, as long as the weight of the counterweight 200 accounts for within the range of 0.05%-0.3% of the weight of each impeller blade 500, and no specific limitation is made here.

[0022] In this embodiment, the fasteners include a first fastener 310 and a second fastener 320.

[0023] Reference Figure 1 and Figure 2 One end of the first fixing member 310 passes through the first clamping plate 110 and is used to press the impeller blade 500 against the second clamping plate 120, enhancing clamping stability and preventing the impeller blade 500 from sliding or shifting during the testing process, thus ensuring that the testing device is securely mounted on the impeller blade 500. At the same time, by adjusting the tightness of the first fixing member 310, it can accommodate impeller blades 500 of different thicknesses or models, exhibiting high adaptability and flexibility.

[0024] Preferably, the first fixing member 310 includes a screw 311 and a nut 312. The free end of the screw 311 abuts against the surface of the impeller blade 500, facilitating the secure fixing of the impeller blade 500 between the first clamping plate 110 and the second clamping plate 120. The nut 312 is located on the side of the first clamping plate 110 facing away from the impeller blade 500. The cooperation between the nut 312 and the screw 311 enables linear clamping force adjustment, ensuring that the free end of the screw 311 abuts against the impeller blade 500, preventing excessive tightness that could cause impeller deformation or excessive looseness that could cause loosening. Furthermore, a handle 3111 is provided at the end of the screw 311 away from the impeller blade 500. The handle 3111 increases the operating contact surface, making it easier for the user to grip and turn it to adjust the tightness.

[0025] Reference Figure 1 and Figure 2 A second fixing member 320 passes through the clamping plate 100 and the counterweight 200 to fix the counterweight 200 between the first clamping plate 110 and the second clamping plate 120, preventing the counterweight 200 from shifting during vibration or swaying. Preferably, the second fixing member 320 includes a bolt 321 and fixing nuts 322 disposed at both ends of the bolt 321. The clamping plate 100 and the counterweight 200 are respectively provided with a first through hole (not shown) and a second through hole (not shown) for the bolt 321 to pass through. After the bolt 321 passes through the two through holes, its two ends are tightened by the fixing nuts 322, thereby fastening the counterweight 200 between the first clamping plate 110 and the second clamping plate 120.

[0026] In this embodiment, the clamping plate 100 is made of steel plate, and the counterweight 200 is made of iron or steel. In other embodiments, both the clamping plate 100 and the counterweight 200 may be made of other metal materials.

[0027] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A device for detecting static balance of an impeller, characterized by comprising: include: The clamping plate (100) holds one end of the impeller blade (500), the counterweight (200) is disposed in the clamping plate (100), the fixing member passing through the clamping plate (100) and the counterweight (200) for fixing the impeller blade (500) and the counterweight (200), and the balance detection member (400) detachably assembled on the clamping plate (100); When the impeller blade (500) is rotated to a horizontal plane, the impeller blade (500) is allowed to swing freely. At this time, the balance detection element (400) detects data in real time to measure the static balance deviation.

2. The impeller static balancing testing device according to claim 1, wherein, The clamping member (100) includes a first clamping plate (110) and a second clamping plate (120); the fixing member includes a first fixing member (310) with one end passing through the first clamping plate (110) for pressing the impeller blade (500) against the second clamping plate (120).

3. The impeller static balancing testing device according to claim 2, wherein, The first fastener (310) includes: a screw (311) for abutting against the surface of the impeller blade (500), and a nut (312) disposed on the side of the first clamping plate (110) facing away from the impeller blade (500) for tightening or loosening the screw (311).

4. The impeller static balancing testing device according to claim 3, wherein The screw (311) is provided with a handle (3111) for hand-gripping and turning at the end away from the impeller blade (500).

5. The impeller static balancing testing device according to claim 2, wherein The fastener also includes a second fastener (320) that passes through the clamping plate (100) and the counterweight (200) for fixing the counterweight (200).

6. The impeller static balancing testing device according to claim 1, wherein The balance detection element (400) is a Bluetooth accelerometer.

7. The impeller static balancing testing device according to claim 1, wherein Both the clamping plate (100) and the counterweight (200) are made of metal.

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