Dynamic balance calibration tool for cooling tower fan

Abstract

A dynamic balance calibration tool for a cooling tower fan relates to the technical field of dynamic balance detection and comprises a base, two supports are slidably arranged on the base, horizontally-arranged supporting columns are rotatably mounted at the upper ends of the supports and slidably arranged in the horizontal direction, and clamping heads are fixedly connected between the opposite ends of the two supporting columns respectively. A fan blade fixing area is formed through the area between the two clamping heads, and each support is further provided with a vibration sensor which is movably arranged in the horizontal direction and the vertical direction. The fan dynamic balance detection device solves the problems that in the prior art, a fan dynamic balance detection device can only detect fan blades of the same model, and when fan blades of different models and sizes are subjected to dynamic balance detection, different tools need to be replaced, so that the detection efficiency of the fan blades is reduced; and the problems that an existing fan dynamic balance detection device is limited by the fan detection position, the detection precision is affected, and then the dynamic balance calibration work is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dynamic balance detection technical field, concretely relates to cooling tower fan dynamic balance calibration frock. BACKGROUND

[0002] Some equipment in the factory area such as centrifugal air compressor, centrifugal refrigerator etc. need cooling water to cool down in the working process, and the cooling water is heated up by heat exchange and then flows back to the cooling tower to dissipate heat and cool down, and then continues to circulate into the cold equipment to supply cold. With long-time operation, the temperature of circulating cooling water will continue to rise, or when the load of the cold equipment increases, the temperature of circulating cooling water will also rise. When the operator finds that the temperature of circulating cooling water is too high, the cooling tower fan will be started at the cooling tower site to improve the heat dissipation effect of the cooling water by the cooling tower fan to cool down the cooling water. The adjustment method of the fan is to set the cooling water inlet temperature value, and the controller starts another fan when the frequency value of the first started fan reaches 50HZ, or several fans are operated at power frequency, and the fan is stopped when the set temperature is reached, and the fan is started when the water temperature rises above the set temperature.

[0003] The prior art discloses a patent with publication number CN217403695U, which comprises a linear drive device fixed on the blade of the wind turbine, a balance slider arranged on the linear drive device, the linear drive device for driving the balance slider to make reciprocating linear motion along the blade of the wind turbine, a detection device comprising a vibration sensor arranged on the hub of the wind turbine, and a controller, wherein the linear drive device and the detection device are electrically connected to the controller. The utility model adjusts the position of the balance slider by the linear drive device, thereby adjusting the mass distribution of each blade to achieve the purpose of blade dynamic balance.

[0004] The existing device gradually exposes the deficiencies of the technology with use, mainly in the following aspects:

[0005] Firstly, the existing fan dynamic balance detection device can only detect the same type of fan blades, and different frocks need to be replaced when detecting the dynamic balance of fan blades of different sizes, which reduces the detection efficiency of fan blades.

[0006] Secondly, the existing fan dynamic balance detection device is limited by the detection position of the fan, which affects the detection accuracy and reduces the dynamic balance calibration work.

[0007] From the above, it is obvious that the prior art has inconvenience and defects in actual use, so it is necessary to improve. UTILITY MODEL CONTENTS

[0008] In view of the defects in the prior art, the cooling tower fan dynamic balance calibration tool is used to solve the problems that the fan dynamic balance detection device in the prior art can only detect the fan blades of the same model, different tooling needs to be replaced when dynamic balance detection is performed on fan blades of different sizes, the detection efficiency of the fan blades is reduced, and the existing fan dynamic balance detection device is limited by the detection position of the fan, which affects the detection accuracy and reduces the dynamic balance calibration work.

[0009] To achieve the above object, the utility model provides the following technical scheme.

[0010] The cooling tower fan dynamic balance calibration tool comprises a base, two supports are slidably arranged on the base, horizontal support columns are rotatably installed at the upper ends of the supports, the support columns are also slidably arranged along the horizontal direction, clamping heads are fixedly connected between the opposite ends of the two support columns, and a fan blade fixing area is formed between the two clamping heads,

[0011] Each of the supports is also provided with a vibration sensor which is movably arranged along the horizontal and vertical directions.

[0012] As an optimized scheme, a sliding hole is horizontally formed in the support, a cross rod is horizontally slidably arranged in the sliding hole, the vibration sensor is fixed to one end of the cross rod, a transverse locking knob is threadedly connected to the side wall of the support, and the end of the transverse locking knob abuts against the cross rod.

[0013] As an optimized scheme, a vertical column is vertically fixed to one end of the cross rod, a sleeve is sleeved on the vertical column and slidably arranged along the vertical direction, the vibration sensor is fixed to the upper end of the sleeve, a vertical locking knob is threadedly connected to the outer wall of the sleeve close to the lower end, and the end of the vertical locking knob abuts against the vertical column.

[0014] As an optimized scheme, the clamping heads are conical in shape, and the small-diameter ends of the two clamping heads are oppositely arranged.

[0015] As an optimized scheme, a rotating sleeve is horizontally rotatably arranged on the support, an internal thread is arranged on the inner wall of the rotating sleeve, and an external thread matching the rotating sleeve is arranged on the outer wall of the support column.

[0016] As an optimized scheme, a locking nut is threadedly connected to the support column and abuts against one end of the rotating sleeve.

[0017] As an optimization scheme, the outer wall of one of the rotating sleeves is coaxially fixed with a gear ring, the upper end of the support is fixed with a driving machine, the output shaft of the driving machine is fixed with a gear, the upper end of the support is provided with a avoiding hole, the gear passes through the avoiding hole and is engaged with the gear ring.

[0018] As an optimization scheme, the base is horizontally fixed with a T-shaped slide rail, the lower end of each support is fixed with a sliding seat which is slidingly installed on the slide rail, the upper end of the sliding seat is threadedly connected with a fixing knob, and the end of the fixing knob abuts against the slide rail.

[0019] As an optimization scheme, the other end of the supporting column is fixed with a rotating handle.

[0020] As an optimization scheme, the sliding hole is a rectangular hole, and the cross rod is a rectangular rod matched with the rectangular hole.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] The two supports are slidingly arranged on the base, the distance between the two supports can be adjusted, and the fan blades with different widths can be matched and used.

[0023] The supporting columns are horizontally moved by rotating, the center rotating drum of the fan blades is clamped and fixed by the clamping heads at the ends of the two supporting columns, the clamping heads are conical frustum-shaped, the fan blades can be centrally fixed, the coaxiality is improved, and the rotating drums with different diameters can be fixed.

[0024] The probe end of the vibration sensor is abutted against the center rotating drum of the supporting column or the fan blades by adjusting the horizontal and vertical positions of the vibration sensor, the fan blades are rotated by rotating the rotating sleeve by the driving machine, the vibration generated in the rotating process of the fan blades is detected by the vibration sensor, the dynamic balance calibration efficiency of the fan blades is improved.

[0025] The probe end of the vibration sensor is abutted against different horizontal positions of the supporting column or the rotating drum by adjusting the horizontal and vertical positions of the vibration sensor, a plurality of positions are detected, and the dynamic balance detection accuracy of the fan blades is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the utility model or the technical scheme in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. In all the drawings, similar elements or parts are generally indicated by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual proportion.

[0027] Figure 1 It is a structural schematic view of the utility model.

[0028] In the figure: 1 - base; 2 - support; 3 - slide rail; 4 - slide base; 5 - fixed knob; 6 - support column; 7 - clamping head; 8 - fan blade; 9 - vibration sensor; 10 - cross bar; 11 - horizontal locking knob; 12 - vertical column; 13 - sleeve; 14 - vertical locking knob; 15 - rotating sleeve; 16 - locking nut; 17 - gear ring; 18 - drive machine; 19 - gear. DETAILED DESCRIPTION

[0029] The embodiments of the technical scheme of the utility model will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the utility model, therefore only as an example, and cannot limit the protection scope of the utility model.

[0030] As Figure 1 shown, the cooling tower fan dynamic balance calibration tool, including base 1, two supports 2 are slidably arranged on the base 1, the upper end of the support 2 is rotatably installed with horizontally arranged support column 6, the support column 6 is also slidably arranged along the horizontal direction, the opposite ends of the two support columns 6 are respectively fixedly connected with clamping heads 7, and the area between the two clamping heads 7 forms a fan blade 8 fixing area,

[0031] Each support 2 is also respectively provided with vibration sensor 9 arranged along the horizontal and vertical directions.

[0032] The support 2 is horizontally provided with a sliding hole, a cross bar 10 is horizontally slidably arranged in the sliding hole, the vibration sensor 9 is fixed to one end of the cross bar 10, the lateral wall of the support 2 is threadedly connected with a horizontal locking knob 11, and the end of the horizontal locking knob 11 abuts against the cross bar 10.

[0033] One end of the cross bar 10 is vertically fixedly connected with a vertical column 12, the vertical column 12 is sleeved with a sleeve 13 arranged along the vertical direction, the vibration sensor 9 is fixed to the upper end of the sleeve 13, the outer wall close to the lower end of the sleeve 13 is threadedly connected with a vertical locking knob 14, and the end of the vertical locking knob 14 abuts against the vertical column 12.

[0034] The clamping head 7 is arranged in a conical frustum shape, and the small-diameter ends of the two clamping heads 7 are oppositely arranged.

[0035] The support 2 is horizontally rotatably provided with a rotating sleeve 15, the inner wall of the rotating sleeve 15 is provided with an internal thread, and the outer wall of the support column 6 is provided with an external thread matched with the rotating sleeve 15.

[0036] The support column 6 is threadedly connected with a locking nut 16, the locking nut 16 abuts against one end of the rotating sleeve 15, so as to fix the horizontal position of the support column 6.

[0037] One of the outer wall of the sleeve 15 coaxially fixed with the gear ring 17, the upper end of the support 2 is fixed with the drive machine 18, the output shaft of the drive machine 18 is fixed with the gear 19, the upper end of the support 2 is provided with a avoiding hole, the gear 19 passes through the avoiding hole, and is engaged with the gear ring 17.

[0038] The base 1 is horizontally fixed with a T-shaped slide rail 3, the lower end of each support 2 is fixed with a sliding seat 4 which is slidingly installed on the slide rail 3, the upper end of the sliding seat 4 is threadedly connected with a fixing knob 5, and the end of the fixing knob 5 abuts against the slide rail 3.

[0039] The other end of the support column 6 is fixed with a rotating handle.

[0040] The sliding hole is a rectangular hole, and the cross rod 10 is a rectangular rod matched with the rectangular hole.

[0041] The working principle of the device is as follows:

[0042] The interval between the two supports 2 can be adjusted by sliding the two supports 2 on the base 1, so that the fan blade 8 of different widths can be matched and used.

[0043] The support column 6 can be moved horizontally by rotating the support column 6, and the center drum of the fan blade 8 is clamped and fixed by the clamping head 7 at the end of the two support columns 6, wherein the clamping head 7 is conical, which can realize the center fixing of the fan blade 8 and improve the coaxiality, and can also fix the drums of different diameters.

[0044] By adjusting the horizontal and vertical positions of the vibration sensor 9, the probe end of the vibration sensor 9 can be placed on the center drum of the support column 6 or the fan blade 8, the sleeve 15 is driven to rotate by the drive machine 18, the fan blade 8 is rotated, and the vibration generated during the rotation of the fan blade 8 is detected by the vibration sensor 9, so as to improve the dynamic balance calibration efficiency of the fan blade 8.

[0045] By adjusting the horizontal and vertical positions of the vibration sensor 9, the probe end of the vibration sensor 9 can be placed on the different horizontal positions of the support column 6 or the drum, so as to realize the detection of multiple positions and improve the dynamic balance detection accuracy of the fan blade 8.

[0046] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it 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, and they should be covered in the scope of the claims and the specification of the present application.

Claims

1. Cooling tower fan dynamic balance calibration tool, characterized by: The invention comprises a base (1), two brackets (2) are slidably provided on the base (1), a horizontally arranged support column (6) is rotatably installed on the upper end of the bracket (2), and the support column (6) is also slidably provided in the horizontal direction, a clamping head (7) is fixedly connected between the opposite ends of the two support columns (6), and a fan blade (8) fixing area is formed by the area between the two clamping heads (7). Each of the brackets (2) is also provided with a vibration sensor (9) arranged to move horizontally and vertically.

2. The cooling tower fan dynamic balancing calibration tool according to claim 1, characterized in that: A sliding hole is horizontally opened on the bracket (2), a horizontally sliding crossbar (10) is provided in the sliding hole, the vibration sensor (9) is fixed on one end of the crossbar (10), a transverse locking knob (11) is threadedly connected on the side wall of the bracket (2), and the end of the transverse locking knob (11) is against the crossbar (10).

3. The cooling tower fan dynamic balancing calibration tool according to claim 2, characterized in that: One end of the crossbar (10) is vertically fixed with a vertical column (12), and a sleeve (13) is mounted on the vertical column (12) and is arranged to slide vertically. The vibration sensor (9) is fixed to the upper end of the sleeve (13), and a vertical locking knob (14) is threadedly connected to the outer wall of the sleeve (13) near the lower end, and the end of the vertical locking knob (14) is against the vertical column (12).

4. The cooling tower fan dynamic balancing calibration tool according to claim 3, characterized in that: The clamping heads (7) are arranged in a frustum shape, and the small-diameter ends of the two clamping heads (7) are arranged opposite to each other.

5. The cooling tower fan dynamic balancing calibration tool according to claim 4, characterized in that: A rotating sleeve (15) is provided on the bracket (2) for horizontal rotation. An internal thread is provided on the inner wall of the rotating sleeve (15). An external thread matching the rotating sleeve (15) is provided on the outer wall of the support column (6).

6. The cooling tower fan dynamic balancing calibration tool according to claim 5, characterized in that: A locking nut (16) is threadedly connected to the support column (6), and the locking nut (16) abuts against one end of the rotating sleeve (15).

7. The cooling tower fan dynamic balancing calibration tool according to claim 6, characterized in that: A gear ring (17) is coaxially fixed to the outer wall of one of the rotating sleeves (15), a driving machine (18) is fixed to the upper end of the bracket (2), and a gear (19) is fixed to the output shaft of the driving machine (18). A relief hole is opened at the upper end of the bracket (2), and the gear (19) passes through the relief hole and meshes with the gear ring (17).

8. The cooling tower fan dynamic balancing calibration tool according to claim 7, characterized in that: A T-shaped slide rail (3) is fixedly connected horizontally to the base (1); a slide seat (4) slidably mounted on the slide rail (3) is fixedly connected to the lower end of each bracket (2); a fixing knob (5) is threadedly connected to the upper end of the slide seat (4); and the end of the fixing knob (5) abuts against the slide rail (3).

9. The cooling tower fan dynamic balancing calibration tool according to claim 8, characterized in that: The other end of the support column (6) is fixedly connected with a turning handle.

10. The cooling tower fan dynamic balancing calibration tool according to claim 9, characterized in that: The sliding hole is a rectangular hole, and the cross bar (10) is a rectangular bar matching the rectangular hole.

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